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[thirdparty/binutils-gdb.git] / bfd / elf32-s390.c
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a85d7ed0 1/* IBM S/390-specific support for 32-bit ELF
250d07de 2 Copyright (C) 2000-2021 Free Software Foundation, Inc.
a85d7ed0
NC		 3 Contributed by Carl B. Pedersen and Martin Schwidefsky.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
a85d7ed0
NC		 10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
3e110533 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
53e09e0a 20 02110-1301, USA. */
a85d7ed0 21
a85d7ed0 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
a85d7ed0
NC		 24#include "bfdlink.h"
25#include "libbfd.h"
26#include "elf-bfd.h"
a85d7ed0 27#include "elf/s390.h"
e3e9290d 28#include <stdarg.h>
a85d7ed0 29
2c3fc389
NC		 30static bfd_reloc_status_type
31s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
32 asection *, bfd *, char **);
33static bfd_reloc_status_type
34s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
35 asection *, bfd *, char **);
36
a85d7ed0
NC		 37/* The relocation "howto" table. */
38
39static reloc_howto_type elf_howto_table[] =
40{
41 HOWTO (R_390_NONE, /* type */
42 0, /* rightshift */
6346d5ca 43 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
a85d7ed0 44 0, /* bitsize */
b34976b6 45 FALSE, /* pc_relative */
a85d7ed0
NC		 46 0, /* bitpos */
47 complain_overflow_dont, /* complain_on_overflow */
48 bfd_elf_generic_reloc, /* special_function */
49 "R_390_NONE", /* name */
b34976b6 50 FALSE, /* partial_inplace */
a85d7ed0
NC		 51 0, /* src_mask */
52 0, /* dst_mask */
b34976b6
AM		 53 FALSE), /* pcrel_offset */
54
07d6d2b8
AM		 55 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
56 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
57 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
58 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
59 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
60 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
61 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
62 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
5236c819 63 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8 64 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
15f8604d 65 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
07d6d2b8 66 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
5236c819 67 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
07d6d2b8 68 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
5236c819 69 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8
AM		 70 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
71 HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
72 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
73 HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
5236c819 74 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
07d6d2b8 75 HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
5236c819 76 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
07d6d2b8 77 HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
5236c819 78 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
07d6d2b8 79 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
5236c819 80 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
07d6d2b8
AM		 81 HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
82 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
83 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
84 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
85 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
86 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
87 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
88 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
89 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
5236c819
MS		 90 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
91 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8 92 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
5236c819
MS		 93 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
94 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
07d6d2b8 95 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
5236c819
MS		 96 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
97 EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
98 EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
99 EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
100 EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
101 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8
AM		 102 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
103 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 104 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
105 EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
07d6d2b8 106 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
5236c819 107 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
07d6d2b8 108 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
5236c819 109 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
07d6d2b8 110 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 111 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
112 EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
113 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
114 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE),
07d6d2b8 115 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
5236c819 116 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
07d6d2b8 117 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 118 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
119 EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
69fc87f1
MS		 120 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
121 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
122 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
123 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
124 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
125 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
126 HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE),
128 EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */
129 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
130 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
131 HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
132 bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE),
133 EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */
134 HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
135 bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE),
136 EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */
137 HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE),
139 EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */
140 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
141 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE),
142 HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
143 bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE),
144 EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */
145 HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE),
147 EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */
148 HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE),
150 HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE),
152 HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
153 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE),
07d6d2b8 154 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
bd1ea41b
MS		 155 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
156 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
157 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
07d6d2b8 158 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
bd1ea41b
MS		 159 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
160 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
161 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
470b557a
AK		 162 HOWTO(R_390_IRELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, 0xffffffff, FALSE),
07d6d2b8
AM		 164 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
165 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
fb798c50
AK		 166 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
167 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
07d6d2b8
AM		 168 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
169 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
fb798c50
AK		 170 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
171 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
a85d7ed0
NC		 172};
173
174/* GNU extension to record C++ vtable hierarchy. */
175static reloc_howto_type elf32_s390_vtinherit_howto =
b34976b6 176 HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
a85d7ed0 177static reloc_howto_type elf32_s390_vtentry_howto =
b34976b6 178 HOWTO (R_390_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
a85d7ed0
NC		 179
180static reloc_howto_type *
2c3fc389
NC		 181elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
182 bfd_reloc_code_real_type code)
a85d7ed0 183{
ec338859 184 switch (code)
0451c93c
MS		 185 {
186 case BFD_RELOC_NONE:
187 return &elf_howto_table[(int) R_390_NONE];
188 case BFD_RELOC_8:
189 return &elf_howto_table[(int) R_390_8];
190 case BFD_RELOC_390_12:
191 return &elf_howto_table[(int) R_390_12];
192 case BFD_RELOC_16:
193 return &elf_howto_table[(int) R_390_16];
194 case BFD_RELOC_32:
195 return &elf_howto_table[(int) R_390_32];
196 case BFD_RELOC_CTOR:
197 return &elf_howto_table[(int) R_390_32];
198 case BFD_RELOC_32_PCREL:
199 return &elf_howto_table[(int) R_390_PC32];
200 case BFD_RELOC_390_GOT12:
201 return &elf_howto_table[(int) R_390_GOT12];
202 case BFD_RELOC_32_GOT_PCREL:
203 return &elf_howto_table[(int) R_390_GOT32];
204 case BFD_RELOC_390_PLT32:
205 return &elf_howto_table[(int) R_390_PLT32];
206 case BFD_RELOC_390_COPY:
207 return &elf_howto_table[(int) R_390_COPY];
208 case BFD_RELOC_390_GLOB_DAT:
209 return &elf_howto_table[(int) R_390_GLOB_DAT];
210 case BFD_RELOC_390_JMP_SLOT:
211 return &elf_howto_table[(int) R_390_JMP_SLOT];
212 case BFD_RELOC_390_RELATIVE:
213 return &elf_howto_table[(int) R_390_RELATIVE];
214 case BFD_RELOC_32_GOTOFF:
5236c819 215 return &elf_howto_table[(int) R_390_GOTOFF32];
0451c93c
MS		 216 case BFD_RELOC_390_GOTPC:
217 return &elf_howto_table[(int) R_390_GOTPC];
218 case BFD_RELOC_390_GOT16:
219 return &elf_howto_table[(int) R_390_GOT16];
220 case BFD_RELOC_16_PCREL:
221 return &elf_howto_table[(int) R_390_PC16];
fb798c50
AK		 222 case BFD_RELOC_390_PC12DBL:
223 return &elf_howto_table[(int) R_390_PC12DBL];
224 case BFD_RELOC_390_PLT12DBL:
225 return &elf_howto_table[(int) R_390_PLT12DBL];
0451c93c
MS		 226 case BFD_RELOC_390_PC16DBL:
227 return &elf_howto_table[(int) R_390_PC16DBL];
228 case BFD_RELOC_390_PLT16DBL:
229 return &elf_howto_table[(int) R_390_PLT16DBL];
fb798c50
AK		 230 case BFD_RELOC_390_PC24DBL:
231 return &elf_howto_table[(int) R_390_PC24DBL];
232 case BFD_RELOC_390_PLT24DBL:
233 return &elf_howto_table[(int) R_390_PLT24DBL];
befc3abb
MS		 234 case BFD_RELOC_390_PC32DBL:
235 return &elf_howto_table[(int) R_390_PC32DBL];
236 case BFD_RELOC_390_PLT32DBL:
237 return &elf_howto_table[(int) R_390_PLT32DBL];
238 case BFD_RELOC_390_GOTPCDBL:
239 return &elf_howto_table[(int) R_390_GOTPCDBL];
240 case BFD_RELOC_390_GOTENT:
241 return &elf_howto_table[(int) R_390_GOTENT];
5236c819
MS		 242 case BFD_RELOC_16_GOTOFF:
243 return &elf_howto_table[(int) R_390_GOTOFF16];
244 case BFD_RELOC_390_GOTPLT12:
245 return &elf_howto_table[(int) R_390_GOTPLT12];
246 case BFD_RELOC_390_GOTPLT16:
247 return &elf_howto_table[(int) R_390_GOTPLT16];
248 case BFD_RELOC_390_GOTPLT32:
249 return &elf_howto_table[(int) R_390_GOTPLT32];
250 case BFD_RELOC_390_GOTPLTENT:
251 return &elf_howto_table[(int) R_390_GOTPLTENT];
252 case BFD_RELOC_390_PLTOFF16:
253 return &elf_howto_table[(int) R_390_PLTOFF16];
254 case BFD_RELOC_390_PLTOFF32:
255 return &elf_howto_table[(int) R_390_PLTOFF32];
69fc87f1
MS		 256 case BFD_RELOC_390_TLS_LOAD:
257 return &elf_howto_table[(int) R_390_TLS_LOAD];
258 case BFD_RELOC_390_TLS_GDCALL:
259 return &elf_howto_table[(int) R_390_TLS_GDCALL];
260 case BFD_RELOC_390_TLS_LDCALL:
261 return &elf_howto_table[(int) R_390_TLS_LDCALL];
262 case BFD_RELOC_390_TLS_GD32:
263 return &elf_howto_table[(int) R_390_TLS_GD32];
264 case BFD_RELOC_390_TLS_GOTIE12:
265 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
266 case BFD_RELOC_390_TLS_GOTIE32:
267 return &elf_howto_table[(int) R_390_TLS_GOTIE32];
268 case BFD_RELOC_390_TLS_LDM32:
269 return &elf_howto_table[(int) R_390_TLS_LDM32];
270 case BFD_RELOC_390_TLS_IE32:
271 return &elf_howto_table[(int) R_390_TLS_IE32];
272 case BFD_RELOC_390_TLS_IEENT:
273 return &elf_howto_table[(int) R_390_TLS_IEENT];
274 case BFD_RELOC_390_TLS_LE32:
275 return &elf_howto_table[(int) R_390_TLS_LE32];
276 case BFD_RELOC_390_TLS_LDO32:
277 return &elf_howto_table[(int) R_390_TLS_LDO32];
278 case BFD_RELOC_390_TLS_DTPMOD:
279 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
280 case BFD_RELOC_390_TLS_DTPOFF:
281 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
282 case BFD_RELOC_390_TLS_TPOFF:
283 return &elf_howto_table[(int) R_390_TLS_TPOFF];
bd1ea41b
MS		 284 case BFD_RELOC_390_20:
285 return &elf_howto_table[(int) R_390_20];
286 case BFD_RELOC_390_GOT20:
287 return &elf_howto_table[(int) R_390_GOT20];
288 case BFD_RELOC_390_GOTPLT20:
289 return &elf_howto_table[(int) R_390_GOTPLT20];
290 case BFD_RELOC_390_TLS_GOTIE20:
291 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
470b557a
AK		 292 case BFD_RELOC_390_IRELATIVE:
293 return &elf_howto_table[(int) R_390_IRELATIVE];
0451c93c
MS		 294 case BFD_RELOC_VTABLE_INHERIT:
295 return &elf32_s390_vtinherit_howto;
296 case BFD_RELOC_VTABLE_ENTRY:
297 return &elf32_s390_vtentry_howto;
298 default:
299 break;
300 }
a85d7ed0
NC		 301 return 0;
302}
303
157090f7
AM		 304static reloc_howto_type *
305elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
306 const char *r_name)
307{
308 unsigned int i;
309
310 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
311 if (elf_howto_table[i].name != NULL
312 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
313 return &elf_howto_table[i];
314
315 if (strcasecmp (elf32_s390_vtinherit_howto.name, r_name) == 0)
316 return &elf32_s390_vtinherit_howto;
317 if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0)
318 return &elf32_s390_vtentry_howto;
319
320 return NULL;
321}
322
a85d7ed0
NC		 323/* We need to use ELF32_R_TYPE so we have our own copy of this function,
324 and elf32-s390.c has its own copy. */
325
f3185997
NC		 326static bfd_boolean
327elf_s390_info_to_howto (bfd *abfd,
2c3fc389
NC		 328 arelent *cache_ptr,
329 Elf_Internal_Rela *dst)
a85d7ed0 330{
d0fb9a8d 331 unsigned int r_type = ELF32_R_TYPE(dst->r_info);
f3185997 332
d0fb9a8d 333 switch (r_type)
a85d7ed0
NC		 334 {
335 case R_390_GNU_VTINHERIT:
336 cache_ptr->howto = &elf32_s390_vtinherit_howto;
337 break;
338
339 case R_390_GNU_VTENTRY:
340 cache_ptr->howto = &elf32_s390_vtentry_howto;
341 break;
342
343 default:
d0fb9a8d
JJ		 344 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
345 {
695344c0 346 /* xgettext:c-format */
0aa13fee
AM		 347 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
348 abfd, r_type);
f3185997
NC		 349 bfd_set_error (bfd_error_bad_value);
350 return FALSE;
d0fb9a8d
JJ		 351 }
352 cache_ptr->howto = &elf_howto_table[r_type];
dc810e39 353 }
f3185997
NC		 354
355 return TRUE;
a85d7ed0
NC		 356}
357
69fc87f1
MS		 358/* A relocation function which doesn't do anything. */
359static bfd_reloc_status_type
2c3fc389
NC		 360s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
361 arelent *reloc_entry,
362 asymbol *symbol ATTRIBUTE_UNUSED,
363 void * data ATTRIBUTE_UNUSED,
364 asection *input_section,
365 bfd *output_bfd,
366 char **error_message ATTRIBUTE_UNUSED)
69fc87f1
MS		 367{
368 if (output_bfd)
369 reloc_entry->address += input_section->output_offset;
370 return bfd_reloc_ok;
371}
372
bd1ea41b
MS		 373/* Handle the large displacement relocs. */
374static bfd_reloc_status_type
2c3fc389
NC		 375s390_elf_ldisp_reloc (bfd *abfd ATTRIBUTE_UNUSED,
376 arelent *reloc_entry,
377 asymbol *symbol,
378 void * data ATTRIBUTE_UNUSED,
379 asection *input_section,
380 bfd *output_bfd,
381 char **error_message ATTRIBUTE_UNUSED)
bd1ea41b
MS		 382{
383 reloc_howto_type *howto = reloc_entry->howto;
384 bfd_vma relocation;
385 bfd_vma insn;
68ffbac6 386
bd1ea41b
MS		 387 if (output_bfd != (bfd *) NULL
388 && (symbol->flags & BSF_SECTION_SYM) == 0
389 && (! howto->partial_inplace
390 || reloc_entry->addend == 0))
391 {
392 reloc_entry->address += input_section->output_offset;
393 return bfd_reloc_ok;
394 }
68ffbac6 395
bd1ea41b
MS		 396 if (output_bfd != NULL)
397 return bfd_reloc_continue;
68ffbac6 398
07515404 399 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b 400 return bfd_reloc_outofrange;
68ffbac6 401
bd1ea41b
MS		 402 relocation = (symbol->value
403 + symbol->section->output_section->vma
404 + symbol->section->output_offset);
405 relocation += reloc_entry->addend;
406 if (howto->pc_relative)
407 {
408 relocation -= (input_section->output_section->vma
409 + input_section->output_offset);
410 relocation -= reloc_entry->address;
411 }
68ffbac6 412
bd1ea41b
MS		 413 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
414 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
415 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
68ffbac6 416
bd1ea41b
MS		 417 if ((bfd_signed_vma) relocation < - 0x80000
418 || (bfd_signed_vma) relocation > 0x7ffff)
419 return bfd_reloc_overflow;
420 else
421 return bfd_reloc_ok;
422}
423
b34976b6 424static bfd_boolean
2c3fc389 425elf_s390_is_local_label_name (bfd *abfd, const char *name)
a85d7ed0
NC		 426{
427 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 428 return TRUE;
a85d7ed0
NC		 429
430 return _bfd_elf_is_local_label_name (abfd, name);
431}
432
433/* Functions for the 390 ELF linker. */
434
435/* The name of the dynamic interpreter. This is put in the .interp
436 section. */
437
87049b0d 438#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
a85d7ed0 439
64285810
MS		 440/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
441 copying dynamic variables from a shared lib into an app's dynbss
442 section, and instead use a dynamic relocation to point into the
443 shared lib. */
444#define ELIMINATE_COPY_RELOCS 1
445
a85d7ed0
NC		 446/* The size in bytes of the first entry in the procedure linkage table. */
447#define PLT_FIRST_ENTRY_SIZE 32
448/* The size in bytes of an entry in the procedure linkage table. */
dc810e39 449#define PLT_ENTRY_SIZE 32
a85d7ed0
NC		 450
451#define GOT_ENTRY_SIZE 4
452
470b557a
AK		 453#define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela)
454
a85d7ed0
NC		 455/* The first three entries in a procedure linkage table are reserved,
456 and the initial contents are unimportant (we zero them out).
457 Subsequent entries look like this. See the SVR4 ABI 386
458 supplement to see how this works. */
459
460/* For the s390, simple addr offset can only be 0 - 4096.
461 To use the full 2 GB address space, several instructions
462 are needed to load an address in a register and execute
463 a branch( or just saving the address)
464
dc810e39 465 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC		 466
467/* The first 3 words in the GOT are then reserved.
468 Word 0 is the address of the dynamic table.
469 Word 1 is a pointer to a structure describing the object
470 Word 2 is used to point to the loader entry address.
471
4cc11e76 472 The code for position independent PLT entries looks like this:
a85d7ed0
NC		 473
474 r12 holds addr of the current GOT at entry to the PLT
475
476 The GOT holds the address in the PLT to be executed.
477 The loader then gets:
478 24(15) = Pointer to the structure describing the object.
a7e28bbe 479 28(15) = Offset into rela.plt
a85d7ed0
NC		 480
481 The loader must then find the module where the function is
482 and insert the address in the GOT.
483
484 Note: 390 can only address +- 64 K relative.
07d6d2b8
AM		 485 We check if offset > 65536, then make a relative branch -64xxx
486 back to a previous defined branch
487
488PLT1: BASR 1,0 # 2 bytes
489 L 1,22(1) # 4 bytes Load offset in GOT in r 1
490 L 1,(1,12) # 4 bytes Load address from GOT in r1
491 BCR 15,1 # 2 bytes Jump to address
492RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
493 L 1,14(1) # 4 bytes Load offset in symol table in r1
a85d7ed0 494 BRC 15,-x # 4 bytes Jump to start of PLT
07d6d2b8
AM		 495 .word 0 # 2 bytes filler
496 .long ? # 4 bytes offset in GOT
497 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 498
499 This was the general case. There are two additional, optimizes PLT
500 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
501 First the one for GOT offsets < 4096:
502
07d6d2b8
AM		 503PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
504 BCR 15,1 # 2 bytes Jump to address
505 .word 0,0,0 # 6 bytes filler
506RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
507 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
508 BRC 15,-x # 4 bytes Jump to start of PLT
509 .word 0,0,0 # 6 bytes filler
510 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 511
512 Second the one for GOT offsets < 32768:
513
07d6d2b8
AM		 514PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
515 L 1,(1,12) # 4 bytes Load address from GOT to r1
516 BCR 15,1 # 2 bytes Jump to address
517 .word 0 # 2 bytes filler
518RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
519 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
520 BRC 15,-x # 4 bytes Jump to start of PLT
521 .word 0,0,0 # 6 bytes filler
522 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 523
524Total = 32 bytes per PLT entry
525
526 The code for static build PLT entries looks like this:
527
07d6d2b8
AM		 528PLT1: BASR 1,0 # 2 bytes
529 L 1,22(1) # 4 bytes Load address of GOT entry
530 L 1,0(0,1) # 4 bytes Load address from GOT in r1
531 BCR 15,1 # 2 bytes Jump to address
532RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
533 L 1,14(1) # 4 bytes Load offset in symbol table in r1
a85d7ed0 534 BRC 15,-x # 4 bytes Jump to start of PLT
07d6d2b8
AM		 535 .word 0 # 2 bytes filler
536 .long ? # 4 bytes address of GOT entry
537 .long ? # 4 bytes offset into rela.plt */
a85d7ed0 538
9aa17453
AK		 539static const bfd_byte elf_s390_plt_entry[PLT_ENTRY_SIZE] =
540 {
07d6d2b8
AM		 541 0x0d, 0x10, /* basr %r1,%r0 */
542 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
543 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */
544 0x07, 0xf1, /* br %r1 */
545 0x0d, 0x10, /* basr %r1,%r0 */
546 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
547 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
548 0x00, 0x00, /* padding */
549 0x00, 0x00, 0x00, 0x00, /* GOT offset */
550 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
9aa17453
AK		 551 };
552
553/* Generic PLT pic entry. */
554static const bfd_byte elf_s390_plt_pic_entry[PLT_ENTRY_SIZE] =
555 {
07d6d2b8
AM		 556 0x0d, 0x10, /* basr %r1,%r0 */
557 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
558 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
559 0x07, 0xf1, /* br %r1 */
560 0x0d, 0x10, /* basr %r1,%r0 */
561 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
562 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
563 0x00, 0x00, /* padding */
564 0x00, 0x00, 0x00, 0x00, /* GOT offset */
565 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
9aa17453
AK		 566 };
567
568/* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced
569 when generating the PLT slot with the GOT offset. */
570static const bfd_byte elf_s390_plt_pic12_entry[PLT_ENTRY_SIZE] =
571 {
07d6d2b8
AM		 572 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */
573 0x07, 0xf1, /* br %r1 */
574 0x00, 0x00, 0x00, 0x00, /* padding */
9aa17453 575 0x00, 0x00,
07d6d2b8
AM		 576 0x0d, 0x10, /* basr %r1,%r0 */
577 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
578 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
9aa17453
AK		 579 0x00, 0x00, 0x00, 0x00,
580 0x00, 0x00, 0x00, 0x00
581 };
582
583/* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced
584 when generating the PLT slot with the GOT offset. */
585static const bfd_byte elf_s390_plt_pic16_entry[PLT_ENTRY_SIZE] =
586 {
07d6d2b8
AM		 587 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */
588 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
589 0x07, 0xf1, /* br %r1 */
9aa17453 590 0x00, 0x00,
07d6d2b8
AM		 591 0x0d, 0x10, /* basr %r1,%r0 */
592 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
593 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
9aa17453
AK		 594 0x00, 0x00, 0x00, 0x00,
595 0x00, 0x00, 0x00, 0x00,
596 0x00, 0x00
597 };
a85d7ed0 598
a7e28bbe 599/* The first PLT entry pushes the offset into the rela.plt
a85d7ed0
NC		 600 from R1 onto the stack at 8(15) and the loader object info
601 at 12(15), loads the loader address in R1 and jumps to it. */
602
603/* The first entry in the PLT for PIC code:
604
605PLT0:
07d6d2b8
AM		 606 ST 1,28(15) # R1 has offset into rela.plt
607 L 1,4(12) # Get loader ino(object struct address)
608 ST 1,24(15) # Store address
609 L 1,8(12) # Entry address of loader in R1
610 BR 1 # Jump to loader
a85d7ed0
NC		 611
612 The first entry in the PLT for static code:
613
614PLT0:
07d6d2b8 615 ST 1,28(15) # R1 has offset into rela.plt
a85d7ed0 616 BASR 1,0
07d6d2b8
AM		 617 L 1,18(0,1) # Get address of GOT
618 MVC 24(4,15),4(1) # Move loader ino to stack
619 L 1,8(1) # Get address of loader
620 BR 1 # Jump to loader
621 .word 0 # filler
622 .long got # address of GOT */
a85d7ed0 623
9aa17453
AK		 624static const bfd_byte elf_s390_plt_first_entry[PLT_FIRST_ENTRY_SIZE] =
625 {
07d6d2b8
AM		 626 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
627 0x0d, 0x10, /* basr %r1,%r0 */
628 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */
629 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */
630 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */
631 0x07, 0xf1, /* br %r1 */
9aa17453
AK		 632 0x00, 0x00, 0x00, 0x00,
633 0x00, 0x00, 0x00, 0x00,
634 0x00, 0x00
635 };
636
637static const bfd_byte elf_s390_plt_pic_first_entry[PLT_FIRST_ENTRY_SIZE] =
638 {
07d6d2b8
AM		 639 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
640 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */
641 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */
642 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */
643 0x07, 0xf1, /* br %r1 */
9aa17453
AK		 644 0x00, 0x00, 0x00, 0x00,
645 0x00, 0x00, 0x00, 0x00,
646 0x00, 0x00, 0x00, 0x00,
647 0x00, 0x00
648 };
a85d7ed0 649
a85d7ed0
NC		 650
651/* s390 ELF linker hash entry. */
652
653struct elf_s390_link_hash_entry
654{
0451c93c 655 struct elf_link_hash_entry elf;
a85d7ed0 656
5236c819
MS		 657 /* Number of GOTPLT references for a function. */
658 bfd_signed_vma gotplt_refcount;
69fc87f1
MS		 659
660#define GOT_UNKNOWN 0
661#define GOT_NORMAL 1
662#define GOT_TLS_GD 2
663#define GOT_TLS_IE 3
664#define GOT_TLS_IE_NLT 4
665 unsigned char tls_type;
470b557a
AK		 666
667 /* For pointer equality reasons we might need to change the symbol
668 type from STT_GNU_IFUNC to STT_FUNC together with its value and
669 section entry. So after alloc_dynrelocs only these values should
670 be used. In order to check whether a symbol is IFUNC use
671 s390_is_ifunc_symbol_p. */
672 bfd_vma ifunc_resolver_address;
673 asection *ifunc_resolver_section;
a85d7ed0
NC		 674};
675
69fc87f1
MS		 676#define elf_s390_hash_entry(ent) \
677 ((struct elf_s390_link_hash_entry *)(ent))
678
470b557a
AK		 679/* This structure represents an entry in the local PLT list needed for
680 local IFUNC symbols. */
681struct plt_entry
682{
683 /* The section of the local symbol.
684 Set in relocate_section and used in finish_dynamic_sections. */
685 asection *sec;
686
687 union
688 {
689 bfd_signed_vma refcount;
690 bfd_vma offset;
691 } plt;
692};
693
0ffa91dd
NC		 694/* NOTE: Keep this structure in sync with
695 the one declared in elf64-s390.c. */
69fc87f1
MS		 696struct elf_s390_obj_tdata
697{
698 struct elf_obj_tdata root;
699
470b557a
AK		 700 /* A local PLT is needed for ifunc symbols. */
701 struct plt_entry *local_plt;
702
0ffa91dd 703 /* TLS type for each local got entry. */
69fc87f1
MS		 704 char *local_got_tls_type;
705};
706
707#define elf_s390_tdata(abfd) \
708 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
709
470b557a
AK		 710#define elf_s390_local_plt(abfd) \
711 (elf_s390_tdata (abfd)->local_plt)
712
69fc87f1
MS		 713#define elf_s390_local_got_tls_type(abfd) \
714 (elf_s390_tdata (abfd)->local_got_tls_type)
715
0ffa91dd
NC		 716#define is_s390_elf(bfd) \
717 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
718 && elf_tdata (bfd) != NULL \
4dfe6ac6 719 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 720
69fc87f1 721static bfd_boolean
62d7a5f6 722elf_s390_mkobject (bfd *abfd)
69fc87f1 723{
0ffa91dd 724 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 725 S390_ELF_DATA);
69fc87f1
MS		 726}
727
728static bfd_boolean
2c3fc389 729elf_s390_object_p (bfd *abfd)
69fc87f1 730{
69fc87f1
MS		 731 /* Set the right machine number for an s390 elf32 file. */
732 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
733}
734
a85d7ed0
NC		 735/* s390 ELF linker hash table. */
736
737struct elf_s390_link_hash_table
738{
0451c93c 739 struct elf_link_hash_table elf;
a85d7ed0 740
0451c93c 741 /* Short-cuts to get to dynamic linker sections. */
470b557a 742 asection *irelifunc;
ec338859 743
2c3fc389
NC		 744 union
745 {
69fc87f1
MS		 746 bfd_signed_vma refcount;
747 bfd_vma offset;
748 } tls_ldm_got;
0451c93c 749};
a85d7ed0
NC		 750
751/* Get the s390 ELF linker hash table from a link_info structure. */
752
753#define elf_s390_hash_table(p) \
0f55320b
AM		 754 ((is_elf_hash_table ((p)->hash) \
755 && elf_hash_table_id (elf_hash_table (p)) == S390_ELF_DATA) \
756 ? (struct elf_s390_link_hash_table *) (p)->hash : NULL)
a85d7ed0 757
470b557a
AK		 758#undef ELF64
759#include "elf-s390-common.c"
760
a85d7ed0
NC		 761/* Create an entry in an s390 ELF linker hash table. */
762
763static struct bfd_hash_entry *
2c3fc389
NC		 764link_hash_newfunc (struct bfd_hash_entry *entry,
765 struct bfd_hash_table *table,
766 const char *string)
a85d7ed0 767{
a85d7ed0
NC		 768 /* Allocate the structure if it has not already been allocated by a
769 subclass. */
0451c93c
MS		 770 if (entry == NULL)
771 {
772 entry = bfd_hash_allocate (table,
773 sizeof (struct elf_s390_link_hash_entry));
774 if (entry == NULL)
775 return entry;
776 }
ec338859 777
a85d7ed0 778 /* Call the allocation method of the superclass. */
0451c93c
MS		 779 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
780 if (entry != NULL)
a85d7ed0 781 {
0451c93c 782 struct elf_s390_link_hash_entry *eh;
ec338859 783
0451c93c 784 eh = (struct elf_s390_link_hash_entry *) entry;
5236c819 785 eh->gotplt_refcount = 0;
69fc87f1 786 eh->tls_type = GOT_UNKNOWN;
470b557a
AK		 787 eh->ifunc_resolver_address = 0;
788 eh->ifunc_resolver_section = NULL;
a85d7ed0
NC		 789 }
790
0451c93c 791 return entry;
a85d7ed0
NC		 792}
793
794/* Create an s390 ELF linker hash table. */
795
796static struct bfd_link_hash_table *
2c3fc389 797elf_s390_link_hash_table_create (bfd *abfd)
a85d7ed0
NC		 798{
799 struct elf_s390_link_hash_table *ret;
986f0783 800 size_t amt = sizeof (struct elf_s390_link_hash_table);
a85d7ed0 801
7bf52ea2 802 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
0451c93c 803 if (ret == NULL)
a85d7ed0
NC		 804 return NULL;
805
66eb6687 806 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 807 sizeof (struct elf_s390_link_hash_entry),
808 S390_ELF_DATA))
a85d7ed0 809 {
e2d34d7d 810 free (ret);
a85d7ed0
NC		 811 return NULL;
812 }
813
0451c93c
MS		 814 return &ret->elf.root;
815}
816
0451c93c
MS		 817/* Copy the extra info we tack onto an elf_link_hash_entry. */
818
819static void
2c3fc389
NC		 820elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
821 struct elf_link_hash_entry *dir,
822 struct elf_link_hash_entry *ind)
0451c93c
MS		 823{
824 struct elf_s390_link_hash_entry *edir, *eind;
825
826 edir = (struct elf_s390_link_hash_entry *) dir;
827 eind = (struct elf_s390_link_hash_entry *) ind;
828
69fc87f1
MS		 829 if (ind->root.type == bfd_link_hash_indirect
830 && dir->got.refcount <= 0)
831 {
832 edir->tls_type = eind->tls_type;
833 eind->tls_type = GOT_UNKNOWN;
834 }
835
64285810
MS		 836 if (ELIMINATE_COPY_RELOCS
837 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 838 && dir->dynamic_adjusted)
839 {
840 /* If called to transfer flags for a weakdef during processing
841 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
842 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
e81830c5
AM		 843 if (dir->versioned != versioned_hidden)
844 dir->ref_dynamic |= ind->ref_dynamic;
f5385ebf
AM		 845 dir->ref_regular |= ind->ref_regular;
846 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
847 dir->needs_plt |= ind->needs_plt;
848 }
64285810 849 else
fcfa13d2 850 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 851}
a85d7ed0 852
69fc87f1 853static int
2c3fc389
NC		 854elf_s390_tls_transition (struct bfd_link_info *info,
855 int r_type,
856 int is_local)
69fc87f1 857{
0e1862bb 858 if (bfd_link_pic (info))
69fc87f1
MS		 859 return r_type;
860
861 switch (r_type)
862 {
863 case R_390_TLS_GD32:
864 case R_390_TLS_IE32:
865 if (is_local)
866 return R_390_TLS_LE32;
867 return R_390_TLS_IE32;
868 case R_390_TLS_GOTIE32:
869 if (is_local)
870 return R_390_TLS_LE32;
871 return R_390_TLS_GOTIE32;
872 case R_390_TLS_LDM32:
873 return R_390_TLS_LE32;
874 }
875
876 return r_type;
877}
878
a85d7ed0
NC		 879/* Look through the relocs for a section during the first phase, and
880 allocate space in the global offset table or procedure linkage
881 table. */
882
b34976b6 883static bfd_boolean
2c3fc389
NC		 884elf_s390_check_relocs (bfd *abfd,
885 struct bfd_link_info *info,
886 asection *sec,
887 const Elf_Internal_Rela *relocs)
a85d7ed0 888{
0451c93c 889 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 890 Elf_Internal_Shdr *symtab_hdr;
891 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 892 const Elf_Internal_Rela *rel;
893 const Elf_Internal_Rela *rel_end;
a85d7ed0 894 asection *sreloc;
5236c819 895 bfd_signed_vma *local_got_refcounts;
69fc87f1 896 int tls_type, old_tls_type;
470b557a 897 Elf_Internal_Sym *isym;
a85d7ed0 898
0e1862bb 899 if (bfd_link_relocatable (info))
b34976b6 900 return TRUE;
a85d7ed0 901
0ffa91dd
NC		 902 BFD_ASSERT (is_s390_elf (abfd));
903
0451c93c 904 htab = elf_s390_hash_table (info);
0ffa91dd 905 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 906 sym_hashes = elf_sym_hashes (abfd);
5236c819 907 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 908
a85d7ed0
NC		 909 sreloc = NULL;
910
911 rel_end = relocs + sec->reloc_count;
912 for (rel = relocs; rel < rel_end; rel++)
913 {
69fc87f1 914 unsigned int r_type;
d42c267e 915 unsigned int r_symndx;
a85d7ed0
NC		 916 struct elf_link_hash_entry *h;
917
918 r_symndx = ELF32_R_SYM (rel->r_info);
919
0451c93c
MS		 920 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
921 {
695344c0 922 /* xgettext:c-format */
871b3ab2 923 _bfd_error_handler (_("%pB: bad symbol index: %d"),
4eca0228 924 abfd, r_symndx);
b34976b6 925 return FALSE;
0451c93c
MS		 926 }
927
a85d7ed0 928 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK		 929 {
930 /* A local symbol. */
f1dfbfdb 931 isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache,
470b557a
AK		 932 abfd, r_symndx);
933 if (isym == NULL)
934 return FALSE;
935
936 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
937 {
938 struct plt_entry *plt;
939
0cb79d69
AK		 940 if (htab->elf.dynobj == NULL)
941 htab->elf.dynobj = abfd;
942
470b557a
AK		 943 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
944 return FALSE;
945
946 if (local_got_refcounts == NULL)
947 {
948 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
949 return FALSE;
950 local_got_refcounts = elf_local_got_refcounts (abfd);
951 }
952 plt = elf_s390_local_plt (abfd);
953 plt[r_symndx].plt.refcount++;
954 }
955 h = NULL;
956 }
a85d7ed0 957 else
973a3492
L		 958 {
959 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
960 while (h->root.type == bfd_link_hash_indirect
961 || h->root.type == bfd_link_hash_warning)
962 h = (struct elf_link_hash_entry *) h->root.u.i.link;
963 }
a85d7ed0 964
5236c819
MS		 965 /* Create got section and local_got_refcounts array if they
966 are needed. */
69fc87f1
MS		 967 r_type = elf_s390_tls_transition (info,
968 ELF32_R_TYPE (rel->r_info),
969 h == NULL);
970 switch (r_type)
a85d7ed0
NC		 971 {
972 case R_390_GOT12:
5236c819 973 case R_390_GOT16:
bd1ea41b 974 case R_390_GOT20:
a85d7ed0 975 case R_390_GOT32:
befc3abb 976 case R_390_GOTENT:
5236c819
MS		 977 case R_390_GOTPLT12:
978 case R_390_GOTPLT16:
bd1ea41b 979 case R_390_GOTPLT20:
5236c819
MS		 980 case R_390_GOTPLT32:
981 case R_390_GOTPLTENT:
69fc87f1
MS		 982 case R_390_TLS_GD32:
983 case R_390_TLS_GOTIE12:
bd1ea41b 984 case R_390_TLS_GOTIE20:
69fc87f1
MS		 985 case R_390_TLS_GOTIE32:
986 case R_390_TLS_IEENT:
987 case R_390_TLS_IE32:
988 case R_390_TLS_LDM32:
5236c819
MS		 989 if (h == NULL
990 && local_got_refcounts == NULL)
a85d7ed0 991 {
470b557a 992 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 993 return FALSE;
470b557a 994 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 995 }
5236c819
MS		 996 /* Fall through. */
997 case R_390_GOTOFF16:
998 case R_390_GOTOFF32:
0451c93c 999 case R_390_GOTPC:
befc3abb 1000 case R_390_GOTPCDBL:
f41345a7 1001 if (htab->elf.sgot == NULL)
0451c93c
MS		 1002 {
1003 if (htab->elf.dynobj == NULL)
1004 htab->elf.dynobj = abfd;
ce558b89 1005 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
b34976b6 1006 return FALSE;
0451c93c 1007 }
5236c819
MS		 1008 }
1009
470b557a
AK		 1010 if (h != NULL)
1011 {
1012 if (htab->elf.dynobj == NULL)
1013 htab->elf.dynobj = abfd;
1014 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1015 return FALSE;
1016
1017 /* Make sure an IFUNC symbol defined in a non-shared object
1018 always gets a PLT slot. */
1019 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1020 {
1021 /* The symbol is called by the dynamic loader in order
1022 to resolve the relocation. So it is in fact also
1023 referenced. */
1024 h->ref_regular = 1;
1025 h->needs_plt = 1;
1026 }
1027 }
69fc87f1 1028 switch (r_type)
5236c819 1029 {
5236c819
MS		 1030 case R_390_GOTPC:
1031 case R_390_GOTPCDBL:
470b557a
AK		 1032 /* These relocs do not need a GOT slot. They just load the
1033 GOT pointer itself or address something else relative to
1034 the GOT. Since the GOT pointer has been set up above we
1035 are done. */
a85d7ed0 1036 break;
01a53584
AK		 1037 case R_390_GOTOFF16:
1038 case R_390_GOTOFF32:
1039 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
1040 break;
1a0670f3 1041 /* Fall through. */
a85d7ed0 1042
fb798c50 1043 case R_390_PLT12DBL:
26e41594 1044 case R_390_PLT16DBL:
fb798c50 1045 case R_390_PLT24DBL:
26e41594 1046 case R_390_PLT32DBL:
a85d7ed0 1047 case R_390_PLT32:
5236c819
MS		 1048 case R_390_PLTOFF16:
1049 case R_390_PLTOFF32:
a85d7ed0 1050 /* This symbol requires a procedure linkage table entry. We
26e41594
AM		 1051 actually build the entry in adjust_dynamic_symbol,
1052 because this might be a case of linking PIC code which is
1053 never referenced by a dynamic object, in which case we
1054 don't need to generate a procedure linkage table entry
1055 after all. */
a85d7ed0
NC		 1056
1057 /* If this is a local symbol, we resolve it directly without
26e41594 1058 creating a procedure linkage table entry. */
5236c819
MS		 1059 if (h != NULL)
1060 {
f5385ebf 1061 h->needs_plt = 1;
5236c819
MS		 1062 h->plt.refcount += 1;
1063 }
1064 break;
a85d7ed0 1065
5236c819
MS		 1066 case R_390_GOTPLT12:
1067 case R_390_GOTPLT16:
bd1ea41b 1068 case R_390_GOTPLT20:
5236c819
MS		 1069 case R_390_GOTPLT32:
1070 case R_390_GOTPLTENT:
1071 /* This symbol requires either a procedure linkage table entry
1072 or an entry in the local got. We actually build the entry
1073 in adjust_dynamic_symbol because whether this is really a
1074 global reference can change and with it the fact if we have
1075 to create a plt entry or a local got entry. To be able to
1076 make a once global symbol a local one we have to keep track
1077 of the number of gotplt references that exist for this
1078 symbol. */
1079 if (h != NULL)
1080 {
1081 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1082 h->needs_plt = 1;
5236c819
MS		 1083 h->plt.refcount += 1;
1084 }
1085 else
1086 local_got_refcounts[r_symndx] += 1;
a85d7ed0
NC		 1087 break;
1088
69fc87f1
MS		 1089 case R_390_TLS_LDM32:
1090 htab->tls_ldm_got.refcount += 1;
1091 break;
1092
1093 case R_390_TLS_IE32:
1094 case R_390_TLS_GOTIE12:
bd1ea41b 1095 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1096 case R_390_TLS_GOTIE32:
1097 case R_390_TLS_IEENT:
0e1862bb 1098 if (bfd_link_pic (info))
69fc87f1 1099 info->flags |= DF_STATIC_TLS;
ae9a127f 1100 /* Fall through. */
69fc87f1
MS		 1101
1102 case R_390_GOT12:
26e41594 1103 case R_390_GOT16:
bd1ea41b 1104 case R_390_GOT20:
69fc87f1
MS		 1105 case R_390_GOT32:
1106 case R_390_GOTENT:
1107 case R_390_TLS_GD32:
1108 /* This symbol requires a global offset table entry. */
1109 switch (r_type)
1110 {
1111 default:
1112 case R_390_GOT12:
1113 case R_390_GOT16:
bd1ea41b 1114 case R_390_GOT20:
69fc87f1
MS		 1115 case R_390_GOT32:
1116 case R_390_GOTENT:
1117 tls_type = GOT_NORMAL;
1118 break;
1119 case R_390_TLS_GD32:
1120 tls_type = GOT_TLS_GD;
1121 break;
1122 case R_390_TLS_IE32:
1123 case R_390_TLS_GOTIE32:
1124 tls_type = GOT_TLS_IE;
1125 break;
1126 case R_390_TLS_GOTIE12:
bd1ea41b 1127 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1128 case R_390_TLS_IEENT:
1129 tls_type = GOT_TLS_IE_NLT;
1130 break;
1131 }
1132
1133 if (h != NULL)
1134 {
1135 h->got.refcount += 1;
1136 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1137 }
1138 else
1139 {
1140 local_got_refcounts[r_symndx] += 1;
1141 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1142 }
1143 /* If a TLS symbol is accessed using IE at least once,
1144 there is no point to use dynamic model for it. */
1145 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1146 {
1147 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1148 {
4eca0228 1149 _bfd_error_handler
695344c0 1150 /* xgettext:c-format */
871b3ab2 1151 (_("%pB: `%s' accessed both as normal and thread local symbol"),
d003868e 1152 abfd, h->root.root.string);
69fc87f1
MS		 1153 return FALSE;
1154 }
1155 if (old_tls_type > tls_type)
1156 tls_type = old_tls_type;
1157 }
1158
1159 if (old_tls_type != tls_type)
1160 {
1161 if (h != NULL)
1162 elf_s390_hash_entry (h)->tls_type = tls_type;
1163 else
1164 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1165 }
1166
1167 if (r_type != R_390_TLS_IE32)
1168 break;
ae9a127f 1169 /* Fall through. */
69fc87f1
MS		 1170
1171 case R_390_TLS_LE32:
e00d879a
AK		 1172 /* For static linking and executables this reloc will be
1173 calculated at linktime otherwise a TLS_TPOFF runtime
1174 reloc will be generated. */
0e1862bb 1175 if (r_type == R_390_TLS_LE32 && bfd_link_pie (info))
e00d879a
AK		 1176 break;
1177
0e1862bb 1178 if (!bfd_link_pic (info))
69fc87f1
MS		 1179 break;
1180 info->flags |= DF_STATIC_TLS;
ae9a127f 1181 /* Fall through. */
69fc87f1 1182
26e41594
AM		 1183 case R_390_8:
1184 case R_390_16:
a85d7ed0 1185 case R_390_32:
26e41594 1186 case R_390_PC16:
fb798c50 1187 case R_390_PC12DBL:
26e41594 1188 case R_390_PC16DBL:
fb798c50 1189 case R_390_PC24DBL:
befc3abb 1190 case R_390_PC32DBL:
a85d7ed0 1191 case R_390_PC32:
99ba5125 1192 if (h != NULL && bfd_link_executable (info))
0451c93c
MS		 1193 {
1194 /* If this reloc is in a read-only section, we might
1195 need a copy reloc. We can't check reliably at this
1196 stage whether the section is read-only, as input
1197 sections have not yet been mapped to output sections.
1198 Tentatively set the flag for now, and correct in
1199 adjust_dynamic_symbol. */
f5385ebf 1200 h->non_got_ref = 1;
ec338859 1201
0e1862bb 1202 if (!bfd_link_pic (info))
470b557a
AK		 1203 {
1204 /* We may need a .plt entry if the function this reloc
1205 refers to is in a shared lib. */
1206 h->plt.refcount += 1;
1207 }
0451c93c 1208 }
a85d7ed0
NC		 1209
1210 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1211 against a global symbol, or a non PC relative reloc
1212 against a local symbol, then we need to copy the reloc
1213 into the shared library. However, if we are linking with
1214 -Bsymbolic, we do not need to copy a reloc against a
1215 global symbol which is defined in an object we are
1216 including in the link (i.e., DEF_REGULAR is set). At
1217 this point we have not seen all the input files, so it is
1218 possible that DEF_REGULAR is not set now but will be set
1219 later (it is never cleared). In case of a weak definition,
1220 DEF_REGULAR may be cleared later by a strong definition in
1221 a shared library. We account for that possibility below by
1222 storing information in the relocs_copied field of the hash
1223 table entry. A similar situation occurs when creating
1224 shared libraries and symbol visibility changes render the
1225 symbol local.
1226
1227 If on the other hand, we are creating an executable, we
1228 may need to keep relocations for symbols satisfied by a
1229 dynamic library if we manage to avoid copy relocs for the
1230 symbol. */
0e1862bb 1231 if ((bfd_link_pic (info)
0451c93c 1232 && (sec->flags & SEC_ALLOC) != 0
ec338859 1233 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1234 && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1235 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1236 && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL
befc3abb 1237 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
0451c93c
MS		 1238 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1239 || (h != NULL
8c21ca21 1240 && (! SYMBOLIC_BIND (info, h)
0451c93c 1241 || h->root.type == bfd_link_hash_defweak
f5385ebf 1242 || !h->def_regular))))
64285810 1243 || (ELIMINATE_COPY_RELOCS
0e1862bb 1244 && !bfd_link_pic (info)
0451c93c
MS		 1245 && (sec->flags & SEC_ALLOC) != 0
1246 && h != NULL
1247 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1248 || !h->def_regular)))
a85d7ed0 1249 {
00d8c7a9
AK		 1250 struct elf_dyn_relocs *p;
1251 struct elf_dyn_relocs **head;
ec338859 1252
0451c93c
MS		 1253 /* We must copy these reloc types into the output file.
1254 Create a reloc section in dynobj and make room for
1255 this reloc. */
a85d7ed0
NC		 1256 if (sreloc == NULL)
1257 {
0451c93c
MS		 1258 if (htab->elf.dynobj == NULL)
1259 htab->elf.dynobj = abfd;
a85d7ed0 1260
83bac4b0
NC		 1261 sreloc = _bfd_elf_make_dynamic_reloc_section
1262 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1263
a85d7ed0 1264 if (sreloc == NULL)
83bac4b0 1265 return FALSE;
a85d7ed0
NC		 1266 }
1267
0451c93c
MS		 1268 /* If this is a global symbol, we count the number of
1269 relocations we need for this symbol. */
1270 if (h != NULL)
a85d7ed0 1271 {
190eb1dd 1272 head = &h->dyn_relocs;
0451c93c
MS		 1273 }
1274 else
1275 {
ec338859
AM		 1276 /* Track dynamic relocs needed for local syms too.
1277 We really need local syms available to do this
1278 easily. Oh well. */
ec338859 1279 asection *s;
6edfbbad 1280 void *vpp;
ae9a127f 1281
f1dfbfdb 1282 isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache,
87d72d41
AM		 1283 abfd, r_symndx);
1284 if (isym == NULL)
b34976b6 1285 return FALSE;
ec338859 1286
87d72d41
AM		 1287 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1288 if (s == NULL)
1289 s = sec;
1290
6edfbbad 1291 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1292 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1293 }
1294
1295 p = *head;
1296 if (p == NULL || p->sec != sec)
1297 {
986f0783 1298 size_t amt = sizeof *p;
ae9a127f 1299
00d8c7a9 1300 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1301 bfd_alloc (htab->elf.dynobj, amt));
1302 if (p == NULL)
b34976b6 1303 return FALSE;
ec338859
AM		 1304 p->next = *head;
1305 *head = p;
1306 p->sec = sec;
1307 p->count = 0;
1308 p->pc_count = 0;
a85d7ed0 1309 }
ec338859
AM		 1310
1311 p->count += 1;
1312 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
fb798c50 1313 || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL
ec338859 1314 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
fb798c50 1315 || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL
befc3abb 1316 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
ec338859
AM		 1317 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1318 p->pc_count += 1;
a85d7ed0 1319 }
a85d7ed0 1320 break;
ec338859 1321
a85d7ed0
NC		 1322 /* This relocation describes the C++ object vtable hierarchy.
1323 Reconstruct it for later use during GC. */
26e41594 1324 case R_390_GNU_VTINHERIT:
c152c796 1325 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
26e41594
AM		 1326 return FALSE;
1327 break;
ec338859 1328
a85d7ed0
NC		 1329 /* This relocation describes which C++ vtable entries are actually
1330 used. Record for later use during GC. */
26e41594 1331 case R_390_GNU_VTENTRY:
a0ea3a14 1332 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
26e41594
AM		 1333 return FALSE;
1334 break;
ec338859 1335
a85d7ed0
NC		 1336 default:
1337 break;
1338 }
1339 }
1340
b34976b6 1341 return TRUE;
a85d7ed0
NC		 1342}
1343
1344/* Return the section that should be marked against GC for a given
1345 relocation. */
1346
1347static asection *
07adf181
AM		 1348elf_s390_gc_mark_hook (asection *sec,
1349 struct bfd_link_info *info,
1350 Elf_Internal_Rela *rel,
1351 struct elf_link_hash_entry *h,
1352 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1353{
1354 if (h != NULL)
07adf181
AM		 1355 switch (ELF32_R_TYPE (rel->r_info))
1356 {
1357 case R_390_GNU_VTINHERIT:
1358 case R_390_GNU_VTENTRY:
1359 return NULL;
1360 }
1361 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0 1362
a85d7ed0
NC		 1363}
1364
5236c819
MS		 1365/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1366 entry but we found we will not create any. Called when we find we will
1367 not have any PLT for this symbol, by for example
1368 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1369 or elf_s390_size_dynamic_sections if no dynamic sections will be
1370 created (we're only linking static objects). */
1371
1372static void
2c3fc389 1373elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1374{
1375 if (h->elf.root.type == bfd_link_hash_warning)
1376 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1377
1378 if (h->gotplt_refcount <= 0)
1379 return;
1380
1381 /* We simply add the number of gotplt references to the number
1382 * of got references for this symbol. */
1383 h->elf.got.refcount += h->gotplt_refcount;
1384 h->gotplt_refcount = -1;
1385}
1386
a85d7ed0
NC		 1387/* Adjust a symbol defined by a dynamic object and referenced by a
1388 regular object. The current definition is in some section of the
1389 dynamic object, but we're not including those sections. We have to
1390 change the definition to something the rest of the link can
1391 understand. */
1392
b34976b6 1393static bfd_boolean
2c3fc389
NC		 1394elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1395 struct elf_link_hash_entry *h)
a85d7ed0 1396{
0451c93c 1397 struct elf_s390_link_hash_table *htab;
5474d94f 1398 asection *s, *srel;
a85d7ed0 1399
470b557a
AK		 1400 /* STT_GNU_IFUNC symbol must go through PLT. */
1401 if (s390_is_ifunc_symbol_p (h))
d8ee9e44
AK		 1402 {
1403 /* All local STT_GNU_IFUNC references must be treated as local
1404 calls via local PLT. */
1405 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1406 {
1407 bfd_size_type pc_count = 0, count = 0;
1408 struct elf_dyn_relocs **pp;
d8ee9e44
AK		 1409 struct elf_dyn_relocs *p;
1410
190eb1dd 1411 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
d8ee9e44
AK		 1412 {
1413 pc_count += p->pc_count;
1414 p->count -= p->pc_count;
1415 p->pc_count = 0;
1416 count += p->count;
1417 if (p->count == 0)
1418 *pp = p->next;
1419 else
1420 pp = &p->next;
1421 }
1422
1423 if (pc_count || count)
1424 {
1425 h->needs_plt = 1;
1426 h->non_got_ref = 1;
1427 if (h->plt.refcount <= 0)
1428 h->plt.refcount = 1;
1429 else
1430 h->plt.refcount += 1;
1431 }
1432 }
1433
1434 if (h->plt.refcount <= 0)
1435 {
1436 h->plt.offset = (bfd_vma) -1;
1437 h->needs_plt = 0;
1438 }
1439 return TRUE;
1440 }
470b557a 1441
a85d7ed0
NC		 1442 /* If this is a function, put it in the procedure linkage table. We
1443 will fill in the contents of the procedure linkage table later
cedb70c5 1444 (although we could actually do it here). */
a85d7ed0 1445 if (h->type == STT_FUNC
f5385ebf 1446 || h->needs_plt)
a85d7ed0 1447 {
0451c93c 1448 if (h->plt.refcount <= 0
8c21ca21
AK		 1449 || SYMBOL_CALLS_LOCAL (info, h)
1450 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1451 && h->root.type != bfd_link_hash_undefweak))
a85d7ed0
NC		 1452 {
1453 /* This case can occur if we saw a PLT32 reloc in an input
26e41594
AM		 1454 file, but the symbol was never referred to by a dynamic
1455 object, or if all references were garbage collected. In
a85d7ed0
NC		 1456 such a case, we don't actually need to build a procedure
1457 linkage table, and we can just do a PC32 reloc instead. */
1458 h->plt.offset = (bfd_vma) -1;
f5385ebf 1459 h->needs_plt = 0;
5236c819 1460 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1461 }
1462
b34976b6 1463 return TRUE;
a85d7ed0 1464 }
bbd7ec4a 1465 else
0451c93c
MS		 1466 /* It's possible that we incorrectly decided a .plt reloc was
1467 needed for an R_390_PC32 reloc to a non-function sym in
1468 check_relocs. We can't decide accurately between function and
1469 non-function syms in check-relocs; Objects loaded later in
1470 the link may change h->type. So fix it now. */
bbd7ec4a 1471 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1472
1473 /* If this is a weak symbol, and there is a real definition, the
1474 processor independent code will have arranged for us to see the
1475 real definition first, and we can just use the same value. */
60d67dc8 1476 if (h->is_weakalias)
a85d7ed0 1477 {
60d67dc8
AM		 1478 struct elf_link_hash_entry *def = weakdef (h);
1479 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1480 h->root.u.def.section = def->root.u.def.section;
1481 h->root.u.def.value = def->root.u.def.value;
64285810 1482 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
60d67dc8 1483 h->non_got_ref = def->non_got_ref;
b34976b6 1484 return TRUE;
a85d7ed0
NC		 1485 }
1486
1487 /* This is a reference to a symbol defined by a dynamic object which
1488 is not a function. */
1489
1490 /* If we are creating a shared library, we must presume that the
1491 only references to the symbol are via the global offset table.
1492 For such cases we need not do anything here; the relocations will
1493 be handled correctly by relocate_section. */
0e1862bb 1494 if (bfd_link_pic (info))
b34976b6 1495 return TRUE;
a85d7ed0
NC		 1496
1497 /* If there are no references to this symbol that do not use the
1498 GOT, we don't need to generate a copy reloc. */
f5385ebf 1499 if (!h->non_got_ref)
b34976b6 1500 return TRUE;
a85d7ed0 1501
0451c93c
MS		 1502 /* If -z nocopyreloc was given, we won't generate them either. */
1503 if (info->nocopyreloc)
1504 {
f5385ebf 1505 h->non_got_ref = 0;
b34976b6 1506 return TRUE;
0451c93c
MS		 1507 }
1508
3bf083ed
AM		 1509 /* If we don't find any dynamic relocs in read-only sections, then
1510 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5dbc8b37 1511 if (ELIMINATE_COPY_RELOCS && !_bfd_elf_readonly_dynrelocs (h))
0451c93c 1512 {
3bf083ed
AM		 1513 h->non_got_ref = 0;
1514 return TRUE;
0451c93c
MS		 1515 }
1516
a85d7ed0
NC		 1517 /* We must allocate the symbol in our .dynbss section, which will
1518 become part of the .bss section of the executable. There will be
1519 an entry for this symbol in the .dynsym section. The dynamic
1520 object will contain position independent code, so all references
1521 from the dynamic object to this symbol will go through the global
1522 offset table. The dynamic linker will use the .dynsym entry to
1523 determine the address it must put in the global offset table, so
1524 both the dynamic object and the regular object will refer to the
1525 same memory location for the variable. */
1526
0451c93c 1527 htab = elf_s390_hash_table (info);
a85d7ed0 1528
0451c93c
MS		 1529 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1530 copy the initial value out of the dynamic object and into the
1531 runtime process image. */
5474d94f
AM		 1532 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1533 {
1534 s = htab->elf.sdynrelro;
1535 srel = htab->elf.sreldynrelro;
1536 }
1537 else
1538 {
1539 s = htab->elf.sdynbss;
1540 srel = htab->elf.srelbss;
1541 }
1d7e9d18 1542 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1543 {
5474d94f 1544 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 1545 h->needs_copy = 1;
a85d7ed0
NC		 1546 }
1547
6cabe1ea 1548 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a85d7ed0
NC		 1549}
1550
0451c93c
MS		 1551/* Allocate space in .plt, .got and associated reloc sections for
1552 dynamic relocs. */
1553
b34976b6 1554static bfd_boolean
2c3fc389 1555allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1556{
1557 struct bfd_link_info *info;
1558 struct elf_s390_link_hash_table *htab;
00d8c7a9 1559 struct elf_dyn_relocs *p;
0451c93c 1560
e92d460e 1561 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1562 return TRUE;
0451c93c
MS		 1563
1564 info = (struct bfd_link_info *) inf;
1565 htab = elf_s390_hash_table (info);
1566
470b557a
AK		 1567 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1568 here if it is defined and referenced in a non-shared object. */
1569 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
61643fba 1570 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
470b557a
AK		 1571 else if (htab->elf.dynamic_sections_created
1572 && h->plt.refcount > 0)
0451c93c
MS		 1573 {
1574 /* Make sure this symbol is output as a dynamic symbol.
1575 Undefined weak syms won't yet be marked as dynamic. */
1576 if (h->dynindx == -1
f5385ebf 1577 && !h->forced_local)
0451c93c 1578 {
c152c796 1579 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1580 return FALSE;
0451c93c
MS		 1581 }
1582
0e1862bb 1583 if (bfd_link_pic (info)
4ec72bde 1584 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1585 {
f41345a7 1586 asection *s = htab->elf.splt;
0451c93c
MS		 1587
1588 /* If this is the first .plt entry, make room for the special
1589 first entry. */
eea6121a
AM		 1590 if (s->size == 0)
1591 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1592
eea6121a 1593 h->plt.offset = s->size;
0451c93c
MS		 1594
1595 /* If this symbol is not defined in a regular file, and we are
1596 not generating a shared library, then set the symbol to this
1597 location in the .plt. This is required to make function
1598 pointers compare as equal between the normal executable and
1599 the shared library. */
0e1862bb 1600 if (! bfd_link_pic (info)
f5385ebf 1601 && !h->def_regular)
0451c93c
MS		 1602 {
1603 h->root.u.def.section = s;
1604 h->root.u.def.value = h->plt.offset;
1605 }
ec338859 1606
0451c93c 1607 /* Make room for this entry. */
eea6121a 1608 s->size += PLT_ENTRY_SIZE;
ec338859 1609
24801b15
AK		 1610 /* We also need to make an entry in the .got.plt section, which
1611 will be placed in the .got section by the linker script. */
f41345a7 1612 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1613
1614 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1615 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1616 }
1617 else
1618 {
07d6d2b8 1619 h->plt.offset = (bfd_vma) -1;
f5385ebf 1620 h->needs_plt = 0;
5236c819 1621 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c 1622 }
ec338859 1623 }
0451c93c
MS		 1624 else
1625 {
1626 h->plt.offset = (bfd_vma) -1;
f5385ebf 1627 h->needs_plt = 0;
5236c819 1628 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
ec338859
AM		 1629 }
1630
69fc87f1
MS		 1631 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1632 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1633 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1634 we can save the dynamic TLS relocation. */
1635 if (h->got.refcount > 0
0e1862bb 1636 && !bfd_link_pic (info)
69fc87f1
MS		 1637 && h->dynindx == -1
1638 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
0451c93c 1639 {
69fc87f1
MS		 1640 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1641 /* For the GOTIE access without a literal pool entry the offset has
1642 to be stored somewhere. The immediate value in the instruction
1643 is not bit enough so the value is stored in the got. */
1644 {
f41345a7
AK		 1645 h->got.offset = htab->elf.sgot->size;
1646 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1647 }
1648 else
1649 h->got.offset = (bfd_vma) -1;
1650 }
1651 else if (h->got.refcount > 0)
ceada896 1652 {
0451c93c 1653 asection *s;
b34976b6 1654 bfd_boolean dyn;
69fc87f1 1655 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1656
1657 /* Make sure this symbol is output as a dynamic symbol.
1658 Undefined weak syms won't yet be marked as dynamic. */
1659 if (h->dynindx == -1
f5385ebf 1660 && !h->forced_local)
0451c93c 1661 {
c152c796 1662 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1663 return FALSE;
0451c93c
MS		 1664 }
1665
f41345a7 1666 s = htab->elf.sgot;
eea6121a
AM		 1667 h->got.offset = s->size;
1668 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1669 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1670 if (tls_type == GOT_TLS_GD)
eea6121a 1671 s->size += GOT_ENTRY_SIZE;
0451c93c 1672 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1673 /* R_390_TLS_IE32 needs one dynamic relocation,
1674 R_390_TLS_GD32 needs one if local symbol and two if global. */
1675 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1676 || tls_type >= GOT_TLS_IE)
f41345a7 1677 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1 1678 else if (tls_type == GOT_TLS_GD)
f41345a7 1679 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela);
82058a73
MS		 1680 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1681 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 1682 && (bfd_link_pic (info)
82058a73 1683 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1684 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1685 }
1686 else
1687 h->got.offset = (bfd_vma) -1;
1688
190eb1dd 1689 if (h->dyn_relocs == NULL)
b34976b6 1690 return TRUE;
0451c93c
MS		 1691
1692 /* In the shared -Bsymbolic case, discard space allocated for
1693 dynamic pc-relative relocs against symbols which turn out to be
1694 defined in regular objects. For the normal shared case, discard
1695 space for pc-relative relocs that have become local due to symbol
1696 visibility changes. */
1697
0e1862bb 1698 if (bfd_link_pic (info))
0451c93c 1699 {
8c21ca21 1700 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1701 {
00d8c7a9 1702 struct elf_dyn_relocs **pp;
0451c93c 1703
190eb1dd 1704 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
0451c93c
MS		 1705 {
1706 p->count -= p->pc_count;
1707 p->pc_count = 0;
1708 if (p->count == 0)
1709 *pp = p->next;
1710 else
1711 pp = &p->next;
1712 }
1713 }
82058a73
MS		 1714
1715 /* Also discard relocs on undefined weak syms with non-default
1716 visibility. */
190eb1dd 1717 if (h->dyn_relocs != NULL
82058a73 1718 && h->root.type == bfd_link_hash_undefweak)
22d606e9 1719 {
b27bb18f
L		 1720 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1721 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
190eb1dd 1722 h->dyn_relocs = NULL;
22d606e9
AM		 1723
1724 /* Make sure undefined weak symbols are output as a dynamic
1725 symbol in PIEs. */
1726 else if (h->dynindx == -1
1727 && !h->forced_local)
1728 {
1729 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1730 return FALSE;
1731 }
1732 }
0451c93c 1733 }
64285810 1734 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1735 {
1736 /* For the non-shared case, discard space for relocs against
1737 symbols which turn out to need copy relocs or are not
1738 dynamic. */
1739
f5385ebf
AM		 1740 if (!h->non_got_ref
1741 && ((h->def_dynamic
1742 && !h->def_regular)
0451c93c
MS		 1743 || (htab->elf.dynamic_sections_created
1744 && (h->root.type == bfd_link_hash_undefweak
1745 || h->root.type == bfd_link_hash_undefined))))
1746 {
1747 /* Make sure this symbol is output as a dynamic symbol.
1748 Undefined weak syms won't yet be marked as dynamic. */
1749 if (h->dynindx == -1
f5385ebf 1750 && !h->forced_local)
0451c93c 1751 {
c152c796 1752 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1753 return FALSE;
0451c93c
MS		 1754 }
1755
1756 /* If that succeeded, we know we'll be keeping all the
1757 relocs. */
1758 if (h->dynindx != -1)
1759 goto keep;
1760 }
1761
190eb1dd 1762 h->dyn_relocs = NULL;
0451c93c 1763
ec338859 1764 keep: ;
0451c93c
MS		 1765 }
1766
1767 /* Finally, allocate space. */
190eb1dd 1768 for (p = h->dyn_relocs; p != NULL; p = p->next)
0451c93c
MS		 1769 {
1770 asection *sreloc = elf_section_data (p->sec)->sreloc;
ae9a127f 1771
eea6121a 1772 sreloc->size += p->count * sizeof (Elf32_External_Rela);
0451c93c
MS		 1773 }
1774
b34976b6 1775 return TRUE;
0451c93c
MS		 1776}
1777
a85d7ed0
NC		 1778/* Set the sizes of the dynamic sections. */
1779
b34976b6 1780static bfd_boolean
2c3fc389
NC		 1781elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1782 struct bfd_link_info *info)
a85d7ed0 1783{
0451c93c 1784 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1785 bfd *dynobj;
1786 asection *s;
b34976b6 1787 bfd_boolean relocs;
0451c93c 1788 bfd *ibfd;
a85d7ed0 1789
0451c93c
MS		 1790 htab = elf_s390_hash_table (info);
1791 dynobj = htab->elf.dynobj;
1792 if (dynobj == NULL)
1793 abort ();
a85d7ed0 1794
0451c93c 1795 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1796 {
1797 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 1798 if (bfd_link_executable (info) && !info->nointerp)
a85d7ed0 1799 {
3d4d4302 1800 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 1801 if (s == NULL)
1802 abort ();
eea6121a 1803 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 1804 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1805 }
1806 }
a85d7ed0 1807
0451c93c
MS		 1808 /* Set up .got offsets for local syms, and space for local dynamic
1809 relocs. */
c72f2fb2 1810 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a85d7ed0 1811 {
0451c93c
MS		 1812 bfd_signed_vma *local_got;
1813 bfd_signed_vma *end_local_got;
69fc87f1 1814 char *local_tls_type;
0451c93c
MS		 1815 bfd_size_type locsymcount;
1816 Elf_Internal_Shdr *symtab_hdr;
1817 asection *srela;
470b557a
AK		 1818 struct plt_entry *local_plt;
1819 unsigned int i;
a85d7ed0 1820
0ffa91dd 1821 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 1822 continue;
1823
0451c93c 1824 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 1825 {
00d8c7a9 1826 struct elf_dyn_relocs *p;
0451c93c 1827
6edfbbad 1828 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 1829 {
ec338859
AM		 1830 if (!bfd_is_abs_section (p->sec)
1831 && bfd_is_abs_section (p->sec->output_section))
1832 {
1833 /* Input section has been discarded, either because
1834 it is a copy of a linkonce section or due to
1835 linker script /DISCARD/, so we'll be discarding
1836 the relocs too. */
1837 }
248866a8 1838 else if (p->count != 0)
ec338859
AM		 1839 {
1840 srela = elf_section_data (p->sec)->sreloc;
eea6121a 1841 srela->size += p->count * sizeof (Elf32_External_Rela);
248866a8
AM		 1842 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1843 info->flags |= DF_TEXTREL;
ec338859 1844 }
a85d7ed0
NC		 1845 }
1846 }
0451c93c
MS		 1847
1848 local_got = elf_local_got_refcounts (ibfd);
1849 if (!local_got)
1850 continue;
1851
0ffa91dd 1852 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 1853 locsymcount = symtab_hdr->sh_info;
1854 end_local_got = local_got + locsymcount;
69fc87f1 1855 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 1856 s = htab->elf.sgot;
1857 srela = htab->elf.srelgot;
69fc87f1 1858 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 1859 {
0451c93c 1860 if (*local_got > 0)
a85d7ed0 1861 {
eea6121a
AM		 1862 *local_got = s->size;
1863 s->size += GOT_ENTRY_SIZE;
69fc87f1 1864 if (*local_tls_type == GOT_TLS_GD)
eea6121a 1865 s->size += GOT_ENTRY_SIZE;
0e1862bb 1866 if (bfd_link_pic (info))
eea6121a 1867 srela->size += sizeof (Elf32_External_Rela);
a85d7ed0
NC		 1868 }
1869 else
0451c93c
MS		 1870 *local_got = (bfd_vma) -1;
1871 }
470b557a
AK		 1872 local_plt = elf_s390_local_plt (ibfd);
1873 for (i = 0; i < symtab_hdr->sh_info; i++)
1874 {
1875 if (local_plt[i].plt.refcount > 0)
1876 {
1877 local_plt[i].plt.offset = htab->elf.iplt->size;
1878 htab->elf.iplt->size += PLT_ENTRY_SIZE;
1879 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
1880 htab->elf.irelplt->size += RELA_ENTRY_SIZE;
1881 }
1882 else
07d6d2b8 1883 local_plt[i].plt.offset = (bfd_vma) -1;
470b557a 1884 }
0451c93c
MS		 1885 }
1886
69fc87f1
MS		 1887 if (htab->tls_ldm_got.refcount > 0)
1888 {
1889 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
1890 relocs. */
f41345a7
AK		 1891 htab->tls_ldm_got.offset = htab->elf.sgot->size;
1892 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
1893 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1
MS		 1894 }
1895 else
1896 htab->tls_ldm_got.offset = -1;
1897
0451c93c
MS		 1898 /* Allocate global sym .plt and .got entries, and space for global
1899 sym dynamic relocs. */
2c3fc389 1900 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 1901
1902 /* We now have determined the sizes of the various dynamic sections.
1903 Allocate memory for them. */
b34976b6 1904 relocs = FALSE;
0451c93c
MS		 1905 for (s = dynobj->sections; s != NULL; s = s->next)
1906 {
1907 if ((s->flags & SEC_LINKER_CREATED) == 0)
1908 continue;
1909
f41345a7
AK		 1910 if (s == htab->elf.splt
1911 || s == htab->elf.sgot
1912 || s == htab->elf.sgotplt
9d19e4fd 1913 || s == htab->elf.sdynbss
5474d94f 1914 || s == htab->elf.sdynrelro
470b557a
AK		 1915 || s == htab->elf.iplt
1916 || s == htab->elf.igotplt
1917 || s == htab->irelifunc)
0451c93c
MS		 1918 {
1919 /* Strip this section if we don't need it; see the
1920 comment below. */
a85d7ed0 1921 }
fd361982 1922 else if (CONST_STRNEQ (bfd_section_name (s), ".rela"))
0451c93c 1923 {
eea6121a 1924 if (s->size != 0)
b34976b6 1925 relocs = TRUE;
ec338859 1926
0451c93c
MS		 1927 /* We use the reloc_count field as a counter if we need
1928 to copy relocs into the output file. */
1929 s->reloc_count = 0;
1930 }
1931 else
a85d7ed0
NC		 1932 {
1933 /* It's not one of our sections, so don't allocate space. */
1934 continue;
1935 }
1936
eea6121a 1937 if (s->size == 0)
a85d7ed0 1938 {
0451c93c
MS		 1939 /* If we don't need this section, strip it from the
1940 output file. This is to handle .rela.bss and
1941 .rela.plt. We must create it in
1942 create_dynamic_sections, because it must be created
1943 before the linker maps input sections to output
1944 sections. The linker does that before
1945 adjust_dynamic_symbol is called, and it is that
1946 function which decides whether anything needs to go
1947 into these sections. */
1948
8423293d 1949 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 1950 continue;
1951 }
1952
c456f082
AM		 1953 if ((s->flags & SEC_HAS_CONTENTS) == 0)
1954 continue;
1955
0451c93c
MS		 1956 /* Allocate memory for the section contents. We use bfd_zalloc
1957 here in case unused entries are not reclaimed before the
1958 section's contents are written out. This should not happen,
1959 but this way if it does, we get a R_390_NONE reloc instead
1960 of garbage. */
eea6121a 1961 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 1962 if (s->contents == NULL)
b34976b6 1963 return FALSE;
a85d7ed0 1964 }
ec338859 1965
3084d7a2 1966 return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs);
a85d7ed0
NC		 1967}
1968
69fc87f1
MS		 1969/* Return the base VMA address which should be subtracted from real addresses
1970 when resolving @dtpoff relocation.
1971 This is PT_TLS segment p_vaddr. */
1972
1973static bfd_vma
2c3fc389 1974dtpoff_base (struct bfd_link_info *info)
69fc87f1 1975{
e1918d23
AM		 1976 /* If tls_sec is NULL, we should have signalled an error already. */
1977 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 1978 return 0;
e1918d23 1979 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 1980}
1981
1982/* Return the relocation value for @tpoff relocation
1983 if STT_TLS virtual address is ADDRESS. */
1984
1985static bfd_vma
2c3fc389 1986tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 1987{
e1918d23 1988 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 1989
e1918d23
AM		 1990 /* If tls_sec is NULL, we should have signalled an error already. */
1991 if (htab->tls_sec == NULL)
69fc87f1 1992 return 0;
e1918d23 1993 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 1994}
1995
1996/* Complain if TLS instruction relocation is against an invalid
1997 instruction. */
1998
1999static void
2c3fc389
NC		 2000invalid_tls_insn (bfd *input_bfd,
2001 asection *input_section,
2002 Elf_Internal_Rela *rel)
69fc87f1
MS		 2003{
2004 reloc_howto_type *howto;
2005
2006 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
4eca0228 2007 _bfd_error_handler
695344c0 2008 /* xgettext:c-format */
2dcf00ce 2009 (_("%pB(%pA+%#" PRIx64 "): invalid instruction for TLS relocation %s"),
d003868e
AM		 2010 input_bfd,
2011 input_section,
2dcf00ce 2012 (uint64_t) rel->r_offset,
69fc87f1 2013 howto->name);
77df2968 2014 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2015}
2016
a85d7ed0
NC		 2017/* Relocate a 390 ELF section. */
2018
b34976b6 2019static bfd_boolean
2c3fc389
NC		 2020elf_s390_relocate_section (bfd *output_bfd,
2021 struct bfd_link_info *info,
2022 bfd *input_bfd,
2023 asection *input_section,
2024 bfd_byte *contents,
2025 Elf_Internal_Rela *relocs,
2026 Elf_Internal_Sym *local_syms,
2027 asection **local_sections)
a85d7ed0 2028{
0451c93c 2029 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2030 Elf_Internal_Shdr *symtab_hdr;
2031 struct elf_link_hash_entry **sym_hashes;
2032 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2033 Elf_Internal_Rela *rel;
2034 Elf_Internal_Rela *relend;
2035
7af5d5c4
AM		 2036 if (!is_s390_elf (input_bfd))
2037 {
2038 bfd_set_error (bfd_error_wrong_format);
2039 return FALSE;
2040 }
0ffa91dd 2041
0451c93c 2042 htab = elf_s390_hash_table (info);
0ffa91dd 2043 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2044 sym_hashes = elf_sym_hashes (input_bfd);
2045 local_got_offsets = elf_local_got_offsets (input_bfd);
2046
a85d7ed0
NC		 2047 rel = relocs;
2048 relend = relocs + input_section->reloc_count;
2049 for (; rel < relend; rel++)
2050 {
5236c819 2051 unsigned int r_type;
a85d7ed0
NC		 2052 reloc_howto_type *howto;
2053 unsigned long r_symndx;
2054 struct elf_link_hash_entry *h;
2055 Elf_Internal_Sym *sym;
2056 asection *sec;
0451c93c 2057 bfd_vma off;
a85d7ed0 2058 bfd_vma relocation;
b34976b6 2059 bfd_boolean unresolved_reloc;
a85d7ed0 2060 bfd_reloc_status_type r;
69fc87f1 2061 int tls_type;
470b557a 2062 asection *base_got = htab->elf.sgot;
b27bb18f 2063 bfd_boolean resolved_to_zero;
ec338859 2064
a85d7ed0
NC		 2065 r_type = ELF32_R_TYPE (rel->r_info);
2066 if (r_type == (int) R_390_GNU_VTINHERIT
26e41594
AM		 2067 || r_type == (int) R_390_GNU_VTENTRY)
2068 continue;
5236c819 2069 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2070 {
2071 bfd_set_error (bfd_error_bad_value);
b34976b6 2072 return FALSE;
a85d7ed0 2073 }
ec338859 2074
b491616a 2075 howto = elf_howto_table + r_type;
a85d7ed0 2076 r_symndx = ELF32_R_SYM (rel->r_info);
5236c819 2077
a85d7ed0
NC		 2078 h = NULL;
2079 sym = NULL;
2080 sec = NULL;
b34976b6 2081 unresolved_reloc = FALSE;
a85d7ed0
NC		 2082 if (r_symndx < symtab_hdr->sh_info)
2083 {
2084 sym = local_syms + r_symndx;
2085 sec = local_sections[r_symndx];
470b557a
AK		 2086 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2087 {
2088 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2089 if (local_plt == NULL)
2090 return FALSE;
2091
2092 /* Address of the PLT slot. */
2093 relocation = (htab->elf.iplt->output_section->vma
2094 + htab->elf.iplt->output_offset
2095 + local_plt[r_symndx].plt.offset);
2096
2097 switch (r_type)
2098 {
31db78f6
AK		 2099 case R_390_PLTOFF16:
2100 case R_390_PLTOFF32:
2101 relocation -= htab->elf.sgot->output_section->vma;
2102 break;
470b557a
AK		 2103 case R_390_GOTPLT12:
2104 case R_390_GOTPLT16:
2105 case R_390_GOTPLT20:
2106 case R_390_GOTPLT32:
2107 case R_390_GOTPLTENT:
2108 case R_390_GOT12:
2109 case R_390_GOT16:
2110 case R_390_GOT20:
2111 case R_390_GOT32:
2112 case R_390_GOTENT:
2113 {
2114 /* Write the PLT slot address into the GOT slot. */
2115 bfd_put_32 (output_bfd, relocation,
2116 htab->elf.sgot->contents +
2117 local_got_offsets[r_symndx]);
2118 relocation = (local_got_offsets[r_symndx] +
2119 htab->elf.sgot->output_offset);
2120
2121 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2122 relocation += htab->elf.sgot->output_section->vma;
2123 break;
2124 }
2125 default:
2126 break;
2127 }
2128 /* The output section is needed later in
2129 finish_dynamic_section when creating the dynamic
2130 relocation. */
2131 local_plt[r_symndx].sec = sec;
2132 goto do_relocation;
2133 }
2134 else
2135 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2136 }
2137 else
2138 {
560e09e9 2139 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2140 bfd_boolean ignored ATTRIBUTE_UNUSED;
ec338859 2141
b2a8e766
AM		 2142 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2143 r_symndx, symtab_hdr, sym_hashes,
2144 h, sec, relocation,
62d887d4 2145 unresolved_reloc, warned, ignored);
a85d7ed0 2146 }
ec338859 2147
dbaa2011 2148 if (sec != NULL && discarded_section (sec))
e4067dbb 2149 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2150 rel, 1, relend, howto, 0, contents);
ab96bf03 2151
0e1862bb 2152 if (bfd_link_relocatable (info))
ab96bf03
AM		 2153 continue;
2154
b27bb18f
L		 2155 resolved_to_zero = (h != NULL
2156 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
2157
a85d7ed0
NC		 2158 switch (r_type)
2159 {
5236c819
MS		 2160 case R_390_GOTPLT12:
2161 case R_390_GOTPLT16:
bd1ea41b 2162 case R_390_GOTPLT20:
5236c819
MS		 2163 case R_390_GOTPLT32:
2164 case R_390_GOTPLTENT:
2165 /* There are three cases for a GOTPLT relocation. 1) The
2166 relocation is against the jump slot entry of a plt that
2167 will get emitted to the output file. 2) The relocation
2168 is against the jump slot of a plt entry that has been
2169 removed. elf_s390_adjust_gotplt has created a GOT entry
2170 as replacement. 3) The relocation is against a local symbol.
2171 Cases 2) and 3) are the same as the GOT relocation code
2172 so we just have to test for case 1 and fall through for
2173 the other two. */
2174 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2175 {
2176 bfd_vma plt_index;
2177
470b557a
AK		 2178 if (s390_is_ifunc_symbol_p (h))
2179 {
2180 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2181 relocation = (plt_index * GOT_ENTRY_SIZE +
2182 htab->elf.igotplt->output_offset);
2183 if (r_type == R_390_GOTPLTENT)
2184 relocation += htab->elf.igotplt->output_section->vma;
2185 }
2186 else
2187 {
2188 /* Calc. index no.
2189 Current offset - size first entry / entry size. */
2190 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2191 PLT_ENTRY_SIZE;
2192
2193 /* Offset in GOT is PLT index plus GOT headers(3)
2194 times 4, addr & GOT addr. */
2195 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2196 if (r_type == R_390_GOTPLTENT)
2197 relocation += htab->elf.sgot->output_section->vma;
2198 }
5236c819
MS		 2199 unresolved_reloc = FALSE;
2200
5236c819
MS		 2201 }
2202 /* Fall through. */
2203
26e41594
AM		 2204 case R_390_GOT12:
2205 case R_390_GOT16:
bd1ea41b 2206 case R_390_GOT20:
26e41594 2207 case R_390_GOT32:
befc3abb 2208 case R_390_GOTENT:
26e41594
AM		 2209 /* Relocation is to the entry for this symbol in the global
2210 offset table. */
470b557a 2211 if (base_got == NULL)
0451c93c 2212 abort ();
ec338859 2213
26e41594
AM		 2214 if (h != NULL)
2215 {
b34976b6 2216 bfd_boolean dyn;
ec338859 2217
26e41594 2218 off = h->got.offset;
0451c93c 2219 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2220
2221 if (s390_is_ifunc_symbol_p (h))
2222 {
2223 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2224 if (off == (bfd_vma)-1)
2225 {
2226 /* No explicit GOT usage so redirect to the
2227 got.iplt slot. */
2228 base_got = htab->elf.igotplt;
2229 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2230 }
2231 else
2232 {
2233 /* Explicit GOT slots must contain the address
2234 of the PLT slot. This will be handled in
2235 finish_dynamic_symbol. */
2236 }
2237 }
0e1862bb
L		 2238 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2239 bfd_link_pic (info),
2240 h)
2241 || (bfd_link_pic (info)
470b557a
AK		 2242 && SYMBOL_REFERENCES_LOCAL (info, h))
2243 || (ELF_ST_VISIBILITY (h->other)
2244 && h->root.type == bfd_link_hash_undefweak))
2245
26e41594
AM		 2246 {
2247 /* This is actually a static link, or it is a
2248 -Bsymbolic link and the symbol is defined
2249 locally, or the symbol was forced to be local
2250 because of a version file. We must initialize
2251 this entry in the global offset table. Since the
2252 offset must always be a multiple of 2, we use the
2253 least significant bit to record whether we have
2254 initialized it already.
2255
2256 When doing a dynamic link, we create a .rel.got
2257 relocation entry to initialize the value. This
2258 is done in the finish_dynamic_symbol routine. */
2259 if ((off & 1) != 0)
2260 off &= ~1;
2261 else
2262 {
a85d7ed0 2263 bfd_put_32 (output_bfd, relocation,
470b557a 2264 base_got->contents + off);
26e41594
AM		 2265 h->got.offset |= 1;
2266 }
a63cc5f7
AK		 2267
2268 if ((h->def_regular
0e1862bb 2269 && bfd_link_pic (info)
a63cc5f7
AK		 2270 && SYMBOL_REFERENCES_LOCAL (info, h))
2271 /* lrl rx,sym@GOTENT -> larl rx, sym */
2272 && ((r_type == R_390_GOTENT
2273 && (bfd_get_16 (input_bfd,
2274 contents + rel->r_offset - 2)
2275 & 0xff0f) == 0xc40d)
2276 /* ly rx, sym@GOT(r12) -> larl rx, sym */
2277 || (r_type == R_390_GOT20
2278 && (bfd_get_32 (input_bfd,
2279 contents + rel->r_offset - 2)
2280 & 0xff00f000) == 0xe300c000
2281 && bfd_get_8 (input_bfd,
2282 contents + rel->r_offset + 3) == 0x58)))
2283 {
2284 unsigned short new_insn =
2285 (0xc000 | (bfd_get_8 (input_bfd,
2286 contents + rel->r_offset - 1) & 0xf0));
2287 bfd_put_16 (output_bfd, new_insn,
2288 contents + rel->r_offset - 2);
2289 r_type = R_390_PC32DBL;
2290 rel->r_addend = 2;
2291 howto = elf_howto_table + r_type;
2292 relocation = h->root.u.def.value
2293 + h->root.u.def.section->output_section->vma
2294 + h->root.u.def.section->output_offset;
2295 goto do_relocation;
2296 }
26e41594 2297 }
0451c93c 2298 else
b34976b6 2299 unresolved_reloc = FALSE;
26e41594
AM		 2300 }
2301 else
2302 {
0451c93c
MS		 2303 if (local_got_offsets == NULL)
2304 abort ();
a85d7ed0 2305
26e41594 2306 off = local_got_offsets[r_symndx];
a85d7ed0 2307
26e41594
AM		 2308 /* The offset must always be a multiple of 4. We use
2309 the least significant bit to record whether we have
2310 already generated the necessary reloc. */
2311 if ((off & 1) != 0)
2312 off &= ~1;
2313 else
2314 {
2315 bfd_put_32 (output_bfd, relocation,
f41345a7 2316 htab->elf.sgot->contents + off);
a85d7ed0 2317
0e1862bb 2318 if (bfd_link_pic (info))
26e41594
AM		 2319 {
2320 asection *srelgot;
2321 Elf_Internal_Rela outrel;
947216bf 2322 bfd_byte *loc;
a85d7ed0 2323
f41345a7 2324 srelgot = htab->elf.srelgot;
0451c93c
MS		 2325 if (srelgot == NULL)
2326 abort ();
a85d7ed0 2327
f41345a7
AK		 2328 outrel.r_offset = (htab->elf.sgot->output_section->vma
2329 + htab->elf.sgot->output_offset
26e41594
AM		 2330 + off);
2331 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2332 outrel.r_addend = relocation;
947216bf
AM		 2333 loc = srelgot->contents;
2334 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
26e41594
AM		 2335 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2336 }
a85d7ed0 2337
26e41594
AM		 2338 local_got_offsets[r_symndx] |= 1;
2339 }
2340 }
a85d7ed0 2341
0451c93c
MS		 2342 if (off >= (bfd_vma) -2)
2343 abort ();
a85d7ed0 2344
470b557a 2345 relocation = base_got->output_offset + off;
befc3abb 2346
ae9a127f
NC		 2347 /* For @GOTENT the relocation is against the offset between
2348 the instruction and the symbols entry in the GOT and not
2349 between the start of the GOT and the symbols entry. We
2350 add the vma of the GOT to get the correct value. */
5236c819
MS		 2351 if ( r_type == R_390_GOTENT
2352 || r_type == R_390_GOTPLTENT)
470b557a 2353 relocation += base_got->output_section->vma;
befc3abb 2354
26e41594 2355 break;
dc810e39 2356
5236c819 2357 case R_390_GOTOFF16:
26e41594
AM		 2358 case R_390_GOTOFF32:
2359 /* Relocation is relative to the start of the global offset
2360 table. */
2361
01a53584
AK		 2362 if (h != NULL
2363 && s390_is_ifunc_symbol_p (h)
2364 && h->def_regular
2365 && !bfd_link_executable (info))
2366 {
2367 relocation = (htab->elf.iplt->output_section->vma
2368 + htab->elf.iplt->output_offset
2369 + h->plt.offset
2370 - htab->elf.sgot->output_section->vma);
2371 goto do_relocation;
2372 }
2373
26e41594
AM		 2374 /* Note that sgot->output_offset is not involved in this
2375 calculation. We always want the start of .got. If we
2376 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2377 permitted by the ABI, we might have to change this
2378 calculation. */
f41345a7 2379 relocation -= htab->elf.sgot->output_section->vma;
26e41594
AM		 2380 break;
2381
2382 case R_390_GOTPC:
befc3abb 2383 case R_390_GOTPCDBL:
26e41594 2384 /* Use global offset table as symbol value. */
f41345a7 2385 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2386 unresolved_reloc = FALSE;
26e41594 2387 break;
a85d7ed0 2388
fb798c50 2389 case R_390_PLT12DBL:
26e41594 2390 case R_390_PLT16DBL:
fb798c50 2391 case R_390_PLT24DBL:
26e41594
AM		 2392 case R_390_PLT32DBL:
2393 case R_390_PLT32:
2394 /* Relocation is to the entry for this symbol in the
2395 procedure linkage table. */
a85d7ed0 2396
26e41594
AM		 2397 /* Resolve a PLT32 reloc against a local symbol directly,
2398 without using the procedure linkage table. */
2399 if (h == NULL)
2400 break;
a85d7ed0 2401
26e41594 2402 if (h->plt.offset == (bfd_vma) -1
470b557a 2403 || (htab->elf.splt == NULL && htab->elf.iplt == NULL))
26e41594
AM		 2404 {
2405 /* We didn't make a PLT entry for this symbol. This
2406 happens when statically linking PIC code, or when
2407 using -Bsymbolic. */
2408 break;
2409 }
2410
470b557a
AK		 2411 if (s390_is_ifunc_symbol_p (h))
2412 relocation = (htab->elf.iplt->output_section->vma
07d6d2b8 2413 + htab->elf.iplt->output_offset
470b557a
AK		 2414 + h->plt.offset);
2415 else
2416 relocation = (htab->elf.splt->output_section->vma
2417 + htab->elf.splt->output_offset
2418 + h->plt.offset);
b34976b6 2419 unresolved_reloc = FALSE;
26e41594 2420 break;
a85d7ed0 2421
5236c819
MS		 2422 case R_390_PLTOFF16:
2423 case R_390_PLTOFF32:
26e41594
AM		 2424 /* Relocation is to the entry for this symbol in the
2425 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2426
2427 /* For local symbols or if we didn't make a PLT entry for
2428 this symbol resolve the symbol directly. */
31db78f6 2429 if (h == NULL
5236c819 2430 || h->plt.offset == (bfd_vma) -1
31db78f6 2431 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2432 {
f41345a7 2433 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS		 2434 break;
2435 }
2436
470b557a
AK		 2437 if (s390_is_ifunc_symbol_p (h))
2438 relocation = (htab->elf.iplt->output_section->vma
2439 + htab->elf.iplt->output_offset
2440 + h->plt.offset
2441 - htab->elf.sgot->output_section->vma);
2442 else
2443 relocation = (htab->elf.splt->output_section->vma
2444 + htab->elf.splt->output_offset
2445 + h->plt.offset
2446 - htab->elf.sgot->output_section->vma);
5236c819 2447 unresolved_reloc = FALSE;
26e41594
AM		 2448 break;
2449
26e41594 2450 case R_390_PC16:
fb798c50 2451 case R_390_PC12DBL:
26e41594 2452 case R_390_PC16DBL:
fb798c50 2453 case R_390_PC24DBL:
26e41594
AM		 2454 case R_390_PC32DBL:
2455 case R_390_PC32:
99ba5125
AK		 2456 if (h != NULL
2457 && s390_is_ifunc_symbol_p (h)
2458 && h->def_regular
2459 && !bfd_link_executable (info))
2460 {
2461 /* This will not work our if the function does not
2462 happen to set up the GOT pointer for some other
2463 reason. 31 bit PLT entries require r12 to hold the
2464 GOT pointer.
2465 FIXME: Implement an errorcheck.
2466 NOTE: It will work when brasl is not available
2467 (e.g. with -m31 -march=g5) since a local function
2468 call then does use GOTOFF which implies r12 being set
2469 up. */
2470 relocation = (htab->elf.iplt->output_section->vma
2471 + htab->elf.iplt->output_offset
2472 + h ->plt.offset);
2473 goto do_relocation;
2474 }
1a0670f3 2475 /* Fall through. */
99ba5125
AK		 2476
2477 case R_390_8:
2478 case R_390_16:
2479 case R_390_32:
f657f8c4
NC		 2480 if ((input_section->flags & SEC_ALLOC) == 0)
2481 break;
2482
470b557a
AK		 2483 if (h != NULL
2484 && s390_is_ifunc_symbol_p (h)
2485 && h->def_regular)
2486 {
d7ab4911 2487 if (!bfd_link_pic (info))
470b557a
AK		 2488 {
2489 /* For a non-shared object STT_GNU_IFUNC symbol must
2490 go through PLT. */
2491 relocation = (htab->elf.iplt->output_section->vma
2492 + htab->elf.iplt->output_offset
2493 + h ->plt.offset);
2494 goto do_relocation;
2495 }
2496 else
2497 {
2498 /* For shared objects a runtime relocation is needed. */
2499
2500 Elf_Internal_Rela outrel;
2501 asection *sreloc;
2502
2503 /* Need a dynamic relocation to get the real function
2504 address. */
2505 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2506 info,
2507 input_section,
2508 rel->r_offset);
2509 if (outrel.r_offset == (bfd_vma) -1
2510 || outrel.r_offset == (bfd_vma) -2)
2511 abort ();
2512
2513 outrel.r_offset += (input_section->output_section->vma
2514 + input_section->output_offset);
2515
2516 if (h->dynindx == -1
2517 || h->forced_local
0e1862bb 2518 || bfd_link_executable (info))
470b557a
AK		 2519 {
2520 /* This symbol is resolved locally. */
2521 outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
2522 outrel.r_addend = (h->root.u.def.value
2523 + h->root.u.def.section->output_section->vma
2524 + h->root.u.def.section->output_offset);
2525 }
2526 else
2527 {
2528 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2529 outrel.r_addend = 0;
2530 }
2531
2532 sreloc = htab->elf.irelifunc;
2533 elf_append_rela (output_bfd, sreloc, &outrel);
2534
2535 /* If this reloc is against an external symbol, we
2536 do not want to fiddle with the addend. Otherwise,
2537 we need to include the symbol value so that it
2538 becomes an addend for the dynamic reloc. For an
2539 internal symbol, we have updated addend. */
2540 continue;
2541 }
2542 }
2543
0e1862bb 2544 if ((bfd_link_pic (info)
82058a73 2545 && (h == NULL
b27bb18f
L		 2546 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2547 && !resolved_to_zero)
82058a73 2548 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2549 && ((r_type != R_390_PC16
fb798c50 2550 && r_type != R_390_PC12DBL
0451c93c 2551 && r_type != R_390_PC16DBL
fb798c50 2552 && r_type != R_390_PC24DBL
befc3abb 2553 && r_type != R_390_PC32DBL
0451c93c 2554 && r_type != R_390_PC32)
8c21ca21 2555 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810 2556 || (ELIMINATE_COPY_RELOCS
0e1862bb 2557 && !bfd_link_pic (info)
0451c93c
MS		 2558 && h != NULL
2559 && h->dynindx != -1
f5385ebf
AM		 2560 && !h->non_got_ref
2561 && ((h->def_dynamic
2562 && !h->def_regular)
0451c93c
MS		 2563 || h->root.type == bfd_link_hash_undefweak
2564 || h->root.type == bfd_link_hash_undefined)))
26e41594
AM		 2565 {
2566 Elf_Internal_Rela outrel;
2567 bfd_boolean skip, relocate;
0451c93c 2568 asection *sreloc;
947216bf 2569 bfd_byte *loc;
ec338859 2570
0451c93c
MS		 2571 /* When generating a shared object, these relocations
2572 are copied into the output file to be resolved at run
2573 time. */
ec338859 2574
26e41594
AM		 2575 skip = FALSE;
2576 relocate = FALSE;
ec338859 2577
c629eae0
JJ		 2578 outrel.r_offset =
2579 _bfd_elf_section_offset (output_bfd, info, input_section,
2580 rel->r_offset);
2581 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2582 skip = TRUE;
0bb2d96a 2583 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2584 skip = TRUE, relocate = TRUE;
26e41594
AM		 2585 outrel.r_offset += (input_section->output_section->vma
2586 + input_section->output_offset);
ec338859 2587
26e41594 2588 if (skip)
0bb2d96a 2589 memset (&outrel, 0, sizeof outrel);
26e41594 2590 else if (h != NULL
0451c93c
MS		 2591 && h->dynindx != -1
2592 && (r_type == R_390_PC16
fb798c50 2593 || r_type == R_390_PC12DBL
0451c93c 2594 || r_type == R_390_PC16DBL
fb798c50 2595 || r_type == R_390_PC24DBL
befc3abb 2596 || r_type == R_390_PC32DBL
0451c93c 2597 || r_type == R_390_PC32
0e1862bb 2598 || !bfd_link_pic (info)
8c21ca21 2599 || !SYMBOLIC_BIND (info, h)
f5385ebf 2600 || !h->def_regular))
26e41594
AM		 2601 {
2602 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
27018c3f 2603 outrel.r_addend = rel->r_addend;
26e41594
AM		 2604 }
2605 else
2606 {
0451c93c 2607 /* This symbol is local, or marked to become local. */
90ced0dd 2608 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2609 if (r_type == R_390_32)
2610 {
2611 relocate = TRUE;
2612 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2613 }
2614 else
2615 {
2616 long sindx;
2617
90ced0dd 2618 if (bfd_is_abs_section (sec))
b5727d75
MS		 2619 sindx = 0;
2620 else if (sec == NULL || sec->owner == NULL)
2621 {
2622 bfd_set_error(bfd_error_bad_value);
2623 return FALSE;
2624 }
2625 else
2626 {
2627 asection *osec;
2628
2629 osec = sec->output_section;
2630 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2631 if (sindx == 0)
2632 {
2633 osec = htab->elf.text_index_section;
2634 sindx = elf_section_data (osec)->dynindx;
2635 }
2636 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2637
2638 /* We are turning this relocation into one
2639 against a section symbol, so subtract out
2640 the output section's address but not the
2641 offset of the input section in the output
2642 section. */
90ced0dd 2643 outrel.r_addend -= osec->vma;
b5727d75
MS		 2644 }
2645 outrel.r_info = ELF32_R_INFO (sindx, r_type);
b5727d75 2646 }
26e41594 2647 }
ec338859 2648
0451c93c
MS		 2649 sreloc = elf_section_data (input_section)->sreloc;
2650 if (sreloc == NULL)
2651 abort ();
ec338859 2652
947216bf
AM		 2653 loc = sreloc->contents;
2654 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 2655 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
ec338859 2656
26e41594
AM		 2657 /* If this reloc is against an external symbol, we do
2658 not want to fiddle with the addend. Otherwise, we
2659 need to include the symbol value so that it becomes
2660 an addend for the dynamic reloc. */
2661 if (! relocate)
2662 continue;
2663 }
0451c93c 2664 break;
ec338859 2665
69fc87f1
MS		 2666 /* Relocations for tls literal pool entries. */
2667 case R_390_TLS_IE32:
0e1862bb 2668 if (bfd_link_pic (info))
69fc87f1
MS		 2669 {
2670 Elf_Internal_Rela outrel;
2671 asection *sreloc;
2672 bfd_byte *loc;
2673
2674 outrel.r_offset = rel->r_offset
2675 + input_section->output_section->vma
2676 + input_section->output_offset;
2677 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2678 sreloc = elf_section_data (input_section)->sreloc;
2679 if (sreloc == NULL)
2680 abort ();
2681 loc = sreloc->contents;
2682 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2683 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2684 }
ae9a127f 2685 /* Fall through. */
69fc87f1
MS		 2686
2687 case R_390_TLS_GD32:
2688 case R_390_TLS_GOTIE32:
2689 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2690 tls_type = GOT_UNKNOWN;
2691 if (h == NULL && local_got_offsets)
2692 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2693 else if (h != NULL)
2694 {
2695 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb
L		 2696 if (!bfd_link_pic (info)
2697 && h->dynindx == -1
2698 && tls_type >= GOT_TLS_IE)
69fc87f1
MS		 2699 r_type = R_390_TLS_LE32;
2700 }
2701 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2702 r_type = R_390_TLS_IE32;
2703
2704 if (r_type == R_390_TLS_LE32)
2705 {
2706 /* This relocation gets optimized away by the local exec
2707 access optimization. */
2708 BFD_ASSERT (! unresolved_reloc);
2709 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2710 contents + rel->r_offset);
2711 continue;
2712 }
2713
f41345a7 2714 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2715 abort ();
2716
2717 if (h != NULL)
2718 off = h->got.offset;
2719 else
2720 {
2721 if (local_got_offsets == NULL)
2722 abort ();
2723
2724 off = local_got_offsets[r_symndx];
2725 }
2726
2727 emit_tls_relocs:
2728
2729 if ((off & 1) != 0)
2730 off &= ~1;
26e41594 2731 else
69fc87f1
MS		 2732 {
2733 Elf_Internal_Rela outrel;
2734 bfd_byte *loc;
2735 int dr_type, indx;
2736
f41345a7 2737 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2738 abort ();
2739
f41345a7
AK		 2740 outrel.r_offset = (htab->elf.sgot->output_section->vma
2741 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2742
2743 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2744 if (r_type == R_390_TLS_GD32)
2745 dr_type = R_390_TLS_DTPMOD;
2746 else
2747 dr_type = R_390_TLS_TPOFF;
2748 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2749 outrel.r_addend = relocation - dtpoff_base (info);
2750 else
2751 outrel.r_addend = 0;
2752 outrel.r_info = ELF32_R_INFO (indx, dr_type);
f41345a7
AK		 2753 loc = htab->elf.srelgot->contents;
2754 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2755 * sizeof (Elf32_External_Rela);
2756 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2757
2758 if (r_type == R_390_TLS_GD32)
2759 {
2760 if (indx == 0)
2761 {
26e41594 2762 BFD_ASSERT (! unresolved_reloc);
69fc87f1
MS		 2763 bfd_put_32 (output_bfd,
2764 relocation - dtpoff_base (info),
f41345a7 2765 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2766 }
2767 else
2768 {
2769 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
2770 outrel.r_offset += GOT_ENTRY_SIZE;
2771 outrel.r_addend = 0;
f41345a7 2772 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 2773 loc += sizeof (Elf32_External_Rela);
2774 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2775 }
2776 }
2777
2778 if (h != NULL)
2779 h->got.offset |= 1;
2780 else
2781 local_got_offsets[r_symndx] |= 1;
2782 }
2783
2784 if (off >= (bfd_vma) -2)
2785 abort ();
2786 if (r_type == ELF32_R_TYPE (rel->r_info))
2787 {
f41345a7 2788 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2789 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
f41345a7 2790 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2791 unresolved_reloc = FALSE;
2792 }
2793 else
2794 {
f41345a7 2795 bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 2796 contents + rel->r_offset);
2797 continue;
2798 }
2799 break;
2800
2801 case R_390_TLS_GOTIE12:
bd1ea41b 2802 case R_390_TLS_GOTIE20:
69fc87f1
MS		 2803 case R_390_TLS_IEENT:
2804 if (h == NULL)
2805 {
2806 if (local_got_offsets == NULL)
2807 abort();
2808 off = local_got_offsets[r_symndx];
0e1862bb 2809 if (bfd_link_pic (info))
69fc87f1
MS		 2810 goto emit_tls_relocs;
2811 }
2812 else
2813 {
2814 off = h->got.offset;
2815 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb
L		 2816 if (bfd_link_pic (info)
2817 || h->dynindx != -1
2818 || tls_type < GOT_TLS_IE)
69fc87f1
MS		 2819 goto emit_tls_relocs;
2820 }
2821
f41345a7 2822 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2823 abort ();
2824
2825 BFD_ASSERT (! unresolved_reloc);
2826 bfd_put_32 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 2827 htab->elf.sgot->contents + off);
2828 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2829 if (r_type == R_390_TLS_IEENT)
f41345a7 2830 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2831 unresolved_reloc = FALSE;
2832 break;
2833
2834 case R_390_TLS_LDM32:
0e1862bb 2835 if (! bfd_link_pic (info))
69fc87f1
MS		 2836 /* The literal pool entry this relocation refers to gets ignored
2837 by the optimized code of the local exec model. Do nothing
2838 and the value will turn out zero. */
2839 continue;
2840
f41345a7 2841 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2842 abort ();
2843
2844 off = htab->tls_ldm_got.offset;
2845 if (off & 1)
2846 off &= ~1;
2847 else
2848 {
2849 Elf_Internal_Rela outrel;
2850 bfd_byte *loc;
2851
f41345a7 2852 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2853 abort ();
2854
f41345a7
AK		 2855 outrel.r_offset = (htab->elf.sgot->output_section->vma
2856 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2857
2858 bfd_put_32 (output_bfd, 0,
f41345a7 2859 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2860 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
2861 outrel.r_addend = 0;
f41345a7
AK		 2862 loc = htab->elf.srelgot->contents;
2863 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2864 * sizeof (Elf32_External_Rela);
2865 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2866 htab->tls_ldm_got.offset |= 1;
2867 }
f41345a7 2868 relocation = htab->elf.sgot->output_offset + off;
26e41594 2869 unresolved_reloc = FALSE;
69fc87f1
MS		 2870 break;
2871
2872 case R_390_TLS_LE32:
3cbc1e5e 2873 if (bfd_link_dll (info))
69fc87f1
MS		 2874 {
2875 /* Linking a shared library with non-fpic code requires
2876 a R_390_TLS_TPOFF relocation. */
2877 Elf_Internal_Rela outrel;
2878 asection *sreloc;
2879 bfd_byte *loc;
2880 int indx;
2881
2882 outrel.r_offset = rel->r_offset
2883 + input_section->output_section->vma
2884 + input_section->output_offset;
2885 if (h != NULL && h->dynindx != -1)
2886 indx = h->dynindx;
2887 else
2888 indx = 0;
2889 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
2890 if (indx == 0)
2891 outrel.r_addend = relocation - dtpoff_base (info);
2892 else
2893 outrel.r_addend = 0;
2894 sreloc = elf_section_data (input_section)->sreloc;
2895 if (sreloc == NULL)
2896 abort ();
2897 loc = sreloc->contents;
2898 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2899 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2900 }
2901 else
2902 {
2903 BFD_ASSERT (! unresolved_reloc);
2904 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2905 contents + rel->r_offset);
2906 }
2907 continue;
2908
2909 case R_390_TLS_LDO32:
0e1862bb 2910 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 2911 relocation -= dtpoff_base (info);
2912 else
2913 /* When converting LDO to LE, we must negate. */
2914 relocation = -tpoff (info, relocation);
2915 break;
2916
2917 /* Relocations for tls instructions. */
2918 case R_390_TLS_LOAD:
2919 case R_390_TLS_GDCALL:
2920 case R_390_TLS_LDCALL:
2921 tls_type = GOT_UNKNOWN;
2922 if (h == NULL && local_got_offsets)
2923 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2924 else if (h != NULL)
2925 tls_type = elf_s390_hash_entry(h)->tls_type;
2926
2927 if (tls_type == GOT_TLS_GD)
2928 continue;
2929
2930 if (r_type == R_390_TLS_LOAD)
2931 {
0e1862bb 2932 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 2933 {
2934 /* IE->LE transition. Four valid cases:
2935 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
2936 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
2937 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
2938 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2939 unsigned int insn, ry;
2940
2941 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
69fc87f1
MS		 2942 if ((insn & 0xff00f000) == 0x58000000)
2943 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
2944 ry = (insn & 0x000f0000);
2945 else if ((insn & 0xff0f0000) == 0x58000000)
2946 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
2947 ry = (insn & 0x0000f000) << 4;
2948 else if ((insn & 0xff00f000) == 0x5800c000)
2949 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
2950 ry = (insn & 0x000f0000);
2951 else if ((insn & 0xff0f0000) == 0x580c0000)
2952 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2953 ry = (insn & 0x0000f000) << 4;
2954 else
3704e358
AK		 2955 {
2956 invalid_tls_insn (input_bfd, input_section, rel);
2957 return FALSE;
2958 }
69fc87f1
MS		 2959 insn = 0x18000700 | (insn & 0x00f00000) | ry;
2960 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2961 }
2962 }
2963 else if (r_type == R_390_TLS_GDCALL)
2964 {
2965 unsigned int insn;
2966
2967 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 2968 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 2969 (insn & 0xffff0000) != 0xc0e50000 &&
2970 (insn & 0xff000000) != 0x0d000000)
3704e358
AK		 2971 {
2972 invalid_tls_insn (input_bfd, input_section, rel);
2973 return FALSE;
2974 }
0e1862bb 2975 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
77df2968 2976 {
d0ddfe27
AK		 2977 if ((insn & 0xff000000) == 0x0d000000)
2978 {
2979 /* GD->LE transition.
2980 basr rx, ry -> nopr r7 */
2981 insn = 0x07070000 | (insn & 0xffff);
2982 }
2983 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 2984 {
2985 /* GD->LE transition.
2986 bas %r14,0(%rx,%r13) -> bc 0,0 */
2987 insn = 0x47000000;
2988 }
2989 else
2990 {
2991 /* GD->LE transition.
d0ddfe27 2992 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 2993 insn = 0xc0040000;
2994 bfd_put_16 (output_bfd, 0x0000,
2995 contents + rel->r_offset + 4);
2996 }
2997 }
69fc87f1 2998 else
77df2968 2999 {
d0ddfe27
AK		 3000 /* If basr is used in the pic case to invoke
3001 _tls_get_offset, something went wrong before. */
3002 if ((insn & 0xff000000) == 0x0d000000)
3704e358
AK		 3003 {
3004 invalid_tls_insn (input_bfd, input_section, rel);
3005 return FALSE;
3006 }
d0ddfe27 3007
77df2968
MS		 3008 if ((insn & 0xff000000) == 0x4d000000)
3009 {
3010 /* GD->IE transition.
3011 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3012 insn = 0x5822c000;
3013 }
3014 else
3015 {
3016 /* GD->IE transition.
3017 brasl %r14,__tls_get_addr@plt ->
07d6d2b8 3018 l %r2,0(%r2,%r12) ; bcr 0,0 */
77df2968
MS		 3019 insn = 0x5822c000;
3020 bfd_put_16 (output_bfd, 0x0700,
3021 contents + rel->r_offset + 4);
3022 }
3023 }
69fc87f1
MS		 3024 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3025 }
3026 else if (r_type == R_390_TLS_LDCALL)
3027 {
0e1862bb 3028 if (!bfd_link_pic (info))
69fc87f1
MS		 3029 {
3030 unsigned int insn;
3031
3032 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3033 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 3034 (insn & 0xffff0000) != 0xc0e50000 &&
3035 (insn & 0xff000000) != 0x0d000000)
3704e358
AK		 3036 {
3037 invalid_tls_insn (input_bfd, input_section, rel);
3038 return FALSE;
3039 }
d0ddfe27
AK		 3040
3041 if ((insn & 0xff000000) == 0x0d000000)
3042 {
3043 /* LD->LE transition.
3044 basr rx, ry -> nopr r7 */
3045 insn = 0x07070000 | (insn & 0xffff);
3046 }
3047 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 3048 {
3049 /* LD->LE transition.
3050 bas %r14,0(%rx,%r13) -> bc 0,0 */
3051 insn = 0x47000000;
3052 }
3053 else
3054 {
3055 /* LD->LE transition.
d0ddfe27 3056 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 3057 insn = 0xc0040000;
3058 bfd_put_16 (output_bfd, 0x0000,
3059 contents + rel->r_offset + 4);
3060 }
69fc87f1
MS		 3061 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3062 }
3063 }
3064 continue;
3065
0451c93c
MS		 3066 default:
3067 break;
3068 }
ec338859 3069
239e1f3a
AM		 3070 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3071 because such sections are not SEC_ALLOC and thus ld.so will
3072 not process them. */
0451c93c 3073 if (unresolved_reloc
239e1f3a 3074 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3075 && h->def_dynamic)
3076 && _bfd_elf_section_offset (output_bfd, info, input_section,
3077 rel->r_offset) != (bfd_vma) -1)
4eca0228 3078 _bfd_error_handler
695344c0 3079 /* xgettext:c-format */
2dcf00ce
AM		 3080 (_("%pB(%pA+%#" PRIx64 "): "
3081 "unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3082 input_bfd,
3083 input_section,
2dcf00ce 3084 (uint64_t) rel->r_offset,
843fe662 3085 howto->name,
0451c93c 3086 h->root.root.string);
ec338859 3087
470b557a
AK		 3088 do_relocation:
3089
fb798c50
AK		 3090 /* When applying a 24 bit reloc we need to start one byte
3091 earlier. Otherwise the 32 bit get/put bfd operations might
3092 access a byte after the actual section. */
3093 if (r_type == R_390_PC24DBL
3094 || r_type == R_390_PLT24DBL)
3095 rel->r_offset--;
3096
bd1ea41b
MS		 3097 if (r_type == R_390_20
3098 || r_type == R_390_GOT20
3099 || r_type == R_390_GOTPLT20
3100 || r_type == R_390_TLS_GOTIE20)
3101 {
3102 relocation += rel->r_addend;
3103 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3104 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3105 contents, rel->r_offset,
3106 relocation, 0);
3107 }
3108 else
3109 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3110 contents, rel->r_offset,
3111 relocation, rel->r_addend);
ec338859 3112
a85d7ed0
NC		 3113 if (r != bfd_reloc_ok)
3114 {
0451c93c 3115 const char *name;
ec338859 3116
0451c93c
MS		 3117 if (h != NULL)
3118 name = h->root.root.string;
3119 else
a85d7ed0 3120 {
0451c93c
MS		 3121 name = bfd_elf_string_from_elf_section (input_bfd,
3122 symtab_hdr->sh_link,
3123 sym->st_name);
3124 if (name == NULL)
b34976b6 3125 return FALSE;
0451c93c 3126 if (*name == '\0')
fd361982 3127 name = bfd_section_name (sec);
0451c93c 3128 }
ec338859 3129
0451c93c 3130 if (r == bfd_reloc_overflow)
1a72702b
AM		 3131 (*info->callbacks->reloc_overflow)
3132 (info, (h ? &h->root : NULL), name, howto->name,
3133 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
0451c93c
MS		 3134 else
3135 {
4eca0228 3136 _bfd_error_handler
695344c0 3137 /* xgettext:c-format */
2dcf00ce 3138 (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"),
d003868e 3139 input_bfd, input_section,
2dcf00ce 3140 (uint64_t) rel->r_offset, name, (int) r);
b34976b6 3141 return FALSE;
a85d7ed0
NC		 3142 }
3143 }
3144 }
ec338859 3145
b34976b6 3146 return TRUE;
a85d7ed0
NC		 3147}
3148
470b557a
AK		 3149/* Generate the PLT slots together with the dynamic relocations needed
3150 for IFUNC symbols. */
3151
3152static void
3153elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3154 struct bfd_link_info *info,
3155 struct elf_link_hash_entry *h,
3156 struct elf_s390_link_hash_table *htab,
3157 bfd_vma iplt_offset,
3158 bfd_vma resolver_address)
3159{
3160 bfd_vma iplt_index;
3161 bfd_vma got_offset;
3162 bfd_vma igotiplt_offset;
3163 Elf_Internal_Rela rela;
3164 bfd_byte *loc;
3165 asection *plt, *gotplt, *relplt;
3166 bfd_vma relative_offset;
3167
3168 if (htab->elf.iplt == NULL
3169 || htab->elf.igotplt == NULL
3170 || htab->elf.irelplt == NULL)
3171 abort ();
3172
3173 gotplt = htab->elf.igotplt;
3174 relplt = htab->elf.irelplt;
3175
3176 /* Index of the PLT slot within iplt section. */
3177 iplt_index = iplt_offset / PLT_ENTRY_SIZE;
3178 plt = htab->elf.iplt;
3179 /* Offset into the igot.plt section. */
3180 igotiplt_offset = iplt_index * GOT_ENTRY_SIZE;
3181 /* Offset into the got section. */
3182 got_offset = igotiplt_offset + gotplt->output_offset;
3183
3184 /* S390 uses halfwords for relative branch calc! */
3185 relative_offset = - (plt->output_offset +
3186 (PLT_ENTRY_SIZE * iplt_index) + 18) / 2;
ceada896
AA		 3187 /* If offset is > 32768, branch to a previous branch
3188 390 can only handle +-64 K jumps. */
470b557a
AK		 3189 if ( -32768 > (int) relative_offset )
3190 relative_offset
3191 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3192
3193 /* Fill in the entry in the procedure linkage table. */
0e1862bb 3194 if (!bfd_link_pic (info))
470b557a
AK		 3195 {
3196 memcpy (plt->contents + iplt_offset, elf_s390_plt_entry,
3197 PLT_ENTRY_SIZE);
3198
3199 /* Adjust jump to the first plt entry. */
3200 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3201 plt->contents + iplt_offset + 20);
3202
3203 /* Push the GOT offset field. */
3204 bfd_put_32 (output_bfd,
3205 (gotplt->output_section->vma
3206 + got_offset),
3207 plt->contents + iplt_offset + 24);
3208 }
3209 else if (got_offset < 4096)
3210 {
3211 /* The GOT offset is small enough to be used directly as
3212 displacement. */
3213 memcpy (plt->contents + iplt_offset,
3214 elf_s390_plt_pic12_entry,
3215 PLT_ENTRY_SIZE);
3216
3217 /* Put in the GOT offset as displacement value. The 0xc000
3218 value comes from the first word of the plt entry. Look
3219 at the elf_s390_plt_pic16_entry content. */
3220 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3221 plt->contents + iplt_offset + 2);
3222
3223 /* Adjust the jump to the first plt entry. */
3224 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3225 plt->contents + iplt_offset + 20);
3226 }
3227 else if (got_offset < 32768)
3228 {
3229 /* The GOT offset is too big for a displacement but small
3230 enough to be a signed 16 bit immediate value as it can be
3231 used in an lhi instruction. */
3232 memcpy (plt->contents + iplt_offset,
3233 elf_s390_plt_pic16_entry,
3234 PLT_ENTRY_SIZE);
3235
3236 /* Put in the GOT offset for the lhi instruction. */
3237 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3238 plt->contents + iplt_offset + 2);
3239
3240 /* Adjust the jump to the first plt entry. */
3241 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3242 plt->contents + iplt_offset + 20);
3243 }
3244 else
3245 {
3246 memcpy (plt->contents + iplt_offset,
3247 elf_s390_plt_pic_entry,
3248 PLT_ENTRY_SIZE);
3249
3250 /* Adjust the jump to the first plt entry. */
3251 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3252 plt->contents + iplt_offset + 20);
3253
3254 /* Push the GOT offset field. */
3255 bfd_put_32 (output_bfd, got_offset,
3256 plt->contents + iplt_offset + 24);
3257 }
3258 /* Insert offset into reloc. table here. */
3259 bfd_put_32 (output_bfd, relplt->output_offset +
3260 iplt_index * RELA_ENTRY_SIZE,
3261 plt->contents + iplt_offset + 28);
3262
3263 /* Fill in the entry in the global offset table.
3264 Points to instruction after GOT offset. */
3265 bfd_put_32 (output_bfd,
3266 (plt->output_section->vma
3267 + plt->output_offset
3268 + iplt_offset
3269 + 12),
3270 gotplt->contents + igotiplt_offset);
3271
3272 /* Fill in the entry in the .rela.plt section. */
3273 rela.r_offset = gotplt->output_section->vma + got_offset;
3274
3275 if (!h
3276 || h->dynindx == -1
0e1862bb 3277 || ((bfd_link_executable (info)
470b557a
AK		 3278 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3279 && h->def_regular))
3280 {
3281 /* The symbol can be locally resolved. */
3282 rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
3283 rela.r_addend = resolver_address;
3284 }
3285 else
3286 {
3287 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3288 rela.r_addend = 0;
3289 }
3290
3291 loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE;
3292 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3293}
3294
a85d7ed0
NC		 3295/* Finish up dynamic symbol handling. We set the contents of various
3296 dynamic sections here. */
3297
b34976b6 3298static bfd_boolean
2c3fc389
NC		 3299elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3300 struct bfd_link_info *info,
3301 struct elf_link_hash_entry *h,
3302 Elf_Internal_Sym *sym)
a85d7ed0 3303{
0451c93c 3304 struct elf_s390_link_hash_table *htab;
470b557a 3305 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
ec338859 3306
0451c93c 3307 htab = elf_s390_hash_table (info);
ec338859 3308
a85d7ed0
NC		 3309 if (h->plt.offset != (bfd_vma) -1)
3310 {
0451c93c
MS		 3311 bfd_vma plt_index;
3312 bfd_vma got_offset;
a85d7ed0 3313 Elf_Internal_Rela rela;
947216bf 3314 bfd_byte *loc;
a85d7ed0 3315 bfd_vma relative_offset;
ec338859 3316
a85d7ed0 3317 /* This symbol has an entry in the procedure linkage table. Set
26e41594 3318 it up. */
0a511368 3319 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
0451c93c 3320 {
0a511368
AK		 3321 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3322 htab, h->plt.offset,
3323 eh->ifunc_resolver_address +
3324 eh->ifunc_resolver_section->output_offset +
3325 eh->ifunc_resolver_section->output_section->vma);
3326 /* Do not return yet. Handling of explicit GOT slots of
3327 IFUNC symbols is below. */
0451c93c 3328 }
a85d7ed0 3329 else
0451c93c 3330 {
470b557a
AK		 3331 if (h->dynindx == -1
3332 || htab->elf.splt == NULL
3333 || htab->elf.sgotplt == NULL
3334 || htab->elf.srelplt == NULL)
3335 abort ();
9aa17453 3336
470b557a
AK		 3337 /* Calc. index no.
3338 Current offset - size first entry / entry size. */
3339 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9aa17453 3340
470b557a
AK		 3341 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3342 addr & GOT addr. */
3343 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3344
470b557a
AK		 3345 /* S390 uses halfwords for relative branch calc! */
3346 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3347 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3348 /* If offset is > 32768, branch to a previous branch
3349 390 can only handle +-64 K jumps. */
3350 if ( -32768 > (int) relative_offset )
3351 relative_offset
3352 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
ec338859 3353
470b557a 3354 /* Fill in the entry in the procedure linkage table. */
0e1862bb 3355 if (!bfd_link_pic (info))
470b557a
AK		 3356 {
3357 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry,
3358 PLT_ENTRY_SIZE);
3359
3360 /* Adjust jump to the first plt entry. */
3361 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3362 htab->elf.splt->contents + h->plt.offset + 20);
3363
3364 /* Push the GOT offset field. */
3365 bfd_put_32 (output_bfd,
3366 (htab->elf.sgotplt->output_section->vma
3367 + htab->elf.sgotplt->output_offset
3368 + got_offset),
3369 htab->elf.splt->contents + h->plt.offset + 24);
3370 }
3371 else if (got_offset < 4096)
3372 {
3373 /* The GOT offset is small enough to be used directly as
3374 displacement. */
3375 memcpy (htab->elf.splt->contents + h->plt.offset,
3376 elf_s390_plt_pic12_entry,
3377 PLT_ENTRY_SIZE);
3378
3379 /* Put in the GOT offset as displacement value. The 0xc000
3380 value comes from the first word of the plt entry. Look
3b67f094 3381 at the elf_s390_plt_pic12_entry content. */
470b557a
AK		 3382 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3383 htab->elf.splt->contents + h->plt.offset + 2);
3384
3385 /* Adjust the jump to the first plt entry. */
3386 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3387 htab->elf.splt->contents + h->plt.offset + 20);
3388 }
3389 else if (got_offset < 32768)
3390 {
3391 /* The GOT offset is too big for a displacement but small
3392 enough to be a signed 16 bit immediate value as it can be
3393 used in an lhi instruction. */
3394 memcpy (htab->elf.splt->contents + h->plt.offset,
3395 elf_s390_plt_pic16_entry,
3396 PLT_ENTRY_SIZE);
3397
3398 /* Put in the GOT offset for the lhi instruction. */
3399 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3400 htab->elf.splt->contents + h->plt.offset + 2);
3401
3402 /* Adjust the jump to the first plt entry. */
3403 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3404 htab->elf.splt->contents + h->plt.offset + 20);
3405 }
3406 else
3407 {
3408 memcpy (htab->elf.splt->contents + h->plt.offset,
3409 elf_s390_plt_pic_entry,
3410 PLT_ENTRY_SIZE);
3411
3412 /* Adjust the jump to the first plt entry. */
3413 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3414 htab->elf.splt->contents + h->plt.offset + 20);
3415
3416 /* Push the GOT offset field. */
3417 bfd_put_32 (output_bfd, got_offset,
3418 htab->elf.splt->contents + h->plt.offset + 24);
3419 }
3420 /* Insert offset into reloc. table here. */
3421 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3422 htab->elf.splt->contents + h->plt.offset + 28);
3423
3424 /* Fill in the entry in the global offset table.
3425 Points to instruction after GOT offset. */
3426 bfd_put_32 (output_bfd,
3427 (htab->elf.splt->output_section->vma
3428 + htab->elf.splt->output_offset
3429 + h->plt.offset
3430 + 12),
3431 htab->elf.sgotplt->contents + got_offset);
3432
3433 /* Fill in the entry in the .rela.plt section. */
3434 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3435 + htab->elf.sgotplt->output_offset
3436 + got_offset);
3437 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3438 rela.r_addend = 0;
3439 loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3440 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3441
3442 if (!h->def_regular)
3443 {
3444 /* Mark the symbol as undefined, rather than as defined in
3445 the .plt section. Leave the value alone. This is a clue
3446 for the dynamic linker, to make function pointer
3447 comparisons work between an application and shared
3448 library. */
3449 sym->st_shndx = SHN_UNDEF;
3450 }
a85d7ed0
NC		 3451 }
3452 }
ec338859 3453
69fc87f1
MS		 3454 if (h->got.offset != (bfd_vma) -1
3455 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3456 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3457 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3458 {
a85d7ed0 3459 Elf_Internal_Rela rela;
947216bf 3460 bfd_byte *loc;
a85d7ed0
NC		 3461
3462 /* This symbol has an entry in the global offset table. Set it
26e41594 3463 up. */
a85d7ed0 3464
f41345a7 3465 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3466 abort ();
a85d7ed0 3467
f41345a7
AK		 3468 rela.r_offset = (htab->elf.sgot->output_section->vma
3469 + htab->elf.sgot->output_offset
dc810e39 3470 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0
NC		 3471
3472 /* If this is a static link, or it is a -Bsymbolic link and the
3473 symbol is defined locally or was forced to be local because
3474 of a version file, we just want to emit a RELATIVE reloc.
3475 The entry in the global offset table will already have been
3476 initialized in the relocate_section function. */
470b557a
AK		 3477 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3478 {
0e1862bb 3479 if (bfd_link_pic (info))
470b557a
AK		 3480 {
3481 /* An explicit GOT slot usage needs GLOB_DAT. If the
3482 symbol references local the implicit got.iplt slot
3483 will be used and the IRELATIVE reloc has been created
3484 above. */
3485 goto do_glob_dat;
3486 }
3487 else
3488 {
3489 /* For non-shared objects explicit GOT slots must be
3490 filled with the PLT slot address for pointer
3491 equality reasons. */
3492 bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma
3493 + htab->elf.iplt->output_offset
3494 + h->plt.offset),
3495 htab->elf.sgot->contents + h->got.offset);
3496 return TRUE;
3497 }
3498 }
0e1862bb 3499 else if (bfd_link_pic (info)
ceada896 3500 && SYMBOL_REFERENCES_LOCAL (info, h))
0451c93c 3501 {
470b557a
AK		 3502 /* If this is a static link, or it is a -Bsymbolic link and
3503 the symbol is defined locally or was forced to be local
3504 because of a version file, we just want to emit a
3505 RELATIVE reloc. The entry in the global offset table
3506 will already have been initialized in the
3507 relocate_section function. */
8170f769 3508 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
8c21ca21 3509 return FALSE;
0451c93c
MS		 3510 BFD_ASSERT((h->got.offset & 1) != 0);
3511 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3512 rela.r_addend = (h->root.u.def.value
26e41594
AM		 3513 + h->root.u.def.section->output_section->vma
3514 + h->root.u.def.section->output_offset);
3515 }
a85d7ed0
NC		 3516 else
3517 {
3518 BFD_ASSERT((h->got.offset & 1) == 0);
470b557a 3519 do_glob_dat:
f41345a7 3520 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3521 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
26e41594
AM		 3522 rela.r_addend = 0;
3523 }
a85d7ed0 3524
f41345a7
AK		 3525 loc = htab->elf.srelgot->contents;
3526 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3527 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3528 }
3529
f5385ebf 3530 if (h->needs_copy)
a85d7ed0 3531 {
a85d7ed0 3532 Elf_Internal_Rela rela;
5474d94f 3533 asection *s;
947216bf 3534 bfd_byte *loc;
a85d7ed0
NC		 3535
3536 /* This symbols needs a copy reloc. Set it up. */
3537
0451c93c
MS		 3538 if (h->dynindx == -1
3539 || (h->root.type != bfd_link_hash_defined
3540 && h->root.type != bfd_link_hash_defweak)
5474d94f
AM		 3541 || htab->elf.srelbss == NULL
3542 || htab->elf.sreldynrelro == NULL)
0451c93c 3543 abort ();
a85d7ed0
NC		 3544
3545 rela.r_offset = (h->root.u.def.value
3546 + h->root.u.def.section->output_section->vma
3547 + h->root.u.def.section->output_offset);
3548 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3549 rela.r_addend = 0;
afbf7e8e 3550 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 3551 s = htab->elf.sreldynrelro;
3552 else
3553 s = htab->elf.srelbss;
3554 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3555 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3556 }
3557
3558 /* Mark some specially defined symbols as absolute. */
9637f6ef 3559 if (h == htab->elf.hdynamic
22edb2f1
RS		 3560 || h == htab->elf.hgot
3561 || h == htab->elf.hplt)
a85d7ed0
NC		 3562 sym->st_shndx = SHN_ABS;
3563
b34976b6 3564 return TRUE;
a85d7ed0
NC		 3565}
3566
0451c93c
MS		 3567/* Used to decide how to sort relocs in an optimal manner for the
3568 dynamic linker, before writing them out. */
3569
3570static enum elf_reloc_type_class
7e612e98
AM		 3571elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3572 const asection *rel_sec ATTRIBUTE_UNUSED,
3573 const Elf_Internal_Rela *rela)
0451c93c 3574{
0f042c67
AK		 3575 bfd *abfd = info->output_bfd;
3576 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3577 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3578 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
3579 Elf_Internal_Sym sym;
3580
3581 if (htab->elf.dynsym == NULL
3582 || !bed->s->swap_symbol_in (abfd,
3583 (htab->elf.dynsym->contents
3584 + r_symndx * bed->s->sizeof_sym),
3585 0, &sym))
3586 abort ();
3587
3588 /* Check relocation against STT_GNU_IFUNC symbol. */
3589 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3590 return reloc_class_ifunc;
3591
0451c93c
MS		 3592 switch ((int) ELF32_R_TYPE (rela->r_info))
3593 {
3594 case R_390_RELATIVE:
3595 return reloc_class_relative;
3596 case R_390_JMP_SLOT:
3597 return reloc_class_plt;
3598 case R_390_COPY:
3599 return reloc_class_copy;
3600 default:
3601 return reloc_class_normal;
3602 }
3603}
3604
a85d7ed0
NC		 3605/* Finish up the dynamic sections. */
3606
b34976b6 3607static bfd_boolean
2c3fc389
NC		 3608elf_s390_finish_dynamic_sections (bfd *output_bfd,
3609 struct bfd_link_info *info)
a85d7ed0 3610{
0451c93c 3611 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3612 bfd *dynobj;
3613 asection *sdyn;
470b557a
AK		 3614 bfd *ibfd;
3615 unsigned int i;
a85d7ed0 3616
0451c93c
MS		 3617 htab = elf_s390_hash_table (info);
3618 dynobj = htab->elf.dynobj;
3d4d4302 3619 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3620
0451c93c 3621 if (htab->elf.dynamic_sections_created)
a85d7ed0 3622 {
a85d7ed0
NC		 3623 Elf32_External_Dyn *dyncon, *dynconend;
3624
f41345a7 3625 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3626 abort ();
a85d7ed0
NC		 3627
3628 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 3629 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3630 for (; dyncon < dynconend; dyncon++)
3631 {
3632 Elf_Internal_Dyn dyn;
a85d7ed0 3633 asection *s;
ec338859 3634
a85d7ed0 3635 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3636
a85d7ed0
NC		 3637 switch (dyn.d_tag)
3638 {
3639 default:
0451c93c 3640 continue;
ec338859 3641
a85d7ed0 3642 case DT_PLTGOT:
4ade44b7
AM		 3643 s = htab->elf.sgotplt;
3644 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
0451c93c 3645 break;
ec338859 3646
a85d7ed0 3647 case DT_JMPREL:
4ade44b7
AM		 3648 s = htab->elf.srelplt;
3649 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a85d7ed0
NC		 3650 break;
3651
3652 case DT_PLTRELSZ:
79c12fae
AK		 3653 dyn.d_un.d_val = htab->elf.srelplt->size;
3654 if (htab->elf.irelplt)
3655 dyn.d_un.d_val += htab->elf.irelplt->size;
a85d7ed0
NC		 3656 break;
3657 }
0451c93c
MS		 3658
3659 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3660 }
3661
3662 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3663 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0 3664 {
f41345a7 3665 memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
0e1862bb 3666 if (bfd_link_pic (info))
0451c93c 3667 {
f41345a7 3668 memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry,
9aa17453
AK		 3669 PLT_FIRST_ENTRY_SIZE);
3670 }
26e41594 3671 else
9aa17453 3672 {
f41345a7 3673 memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry,
9aa17453 3674 PLT_FIRST_ENTRY_SIZE);
26e41594 3675 bfd_put_32 (output_bfd,
f41345a7
AK		 3676 htab->elf.sgotplt->output_section->vma
3677 + htab->elf.sgotplt->output_offset,
3678 htab->elf.splt->contents + 24);
ceada896 3679 }
f41345a7 3680 elf_section_data (htab->elf.splt->output_section)
0451c93c 3681 ->this_hdr.sh_entsize = 4;
a85d7ed0
NC		 3682 }
3683
3684 }
3685
f41345a7 3686 if (htab->elf.sgotplt)
a85d7ed0 3687 {
0451c93c 3688 /* Fill in the first three entries in the global offset table. */
f41345a7 3689 if (htab->elf.sgotplt->size > 0)
0451c93c
MS		 3690 {
3691 bfd_put_32 (output_bfd,
3692 (sdyn == NULL ? (bfd_vma) 0
3693 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3694 htab->elf.sgotplt->contents);
0451c93c 3695 /* One entry for shared object struct ptr. */
f41345a7 3696 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4);
0451c93c 3697 /* One entry for _dl_runtime_resolve. */
f41345a7 3698 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3699 }
a85d7ed0 3700
f41345a7 3701 elf_section_data (htab->elf.sgotplt->output_section)
0451c93c
MS		 3702 ->this_hdr.sh_entsize = 4;
3703 }
470b557a 3704 /* Finish dynamic symbol for local IFUNC symbols. */
c72f2fb2 3705 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
470b557a
AK		 3706 {
3707 struct plt_entry *local_plt;
3708 Elf_Internal_Sym *isym;
3709 Elf_Internal_Shdr *symtab_hdr;
3710
3711 symtab_hdr = &elf_symtab_hdr (ibfd);
3712
1ef692ea
AK		 3713 if (!is_s390_elf (ibfd))
3714 continue;
3715
470b557a
AK		 3716 local_plt = elf_s390_local_plt (ibfd);
3717 if (local_plt != NULL)
3718 for (i = 0; i < symtab_hdr->sh_info; i++)
3719 {
3720 if (local_plt[i].plt.offset != (bfd_vma) -1)
3721 {
3722 asection *sec = local_plt[i].sec;
f1dfbfdb 3723 isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, ibfd, i);
470b557a
AK		 3724 if (isym == NULL)
3725 return FALSE;
3726
3727 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3728 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3729 local_plt[i].plt.offset,
3730 isym->st_value
3731 + sec->output_section->vma
3732 + sec->output_offset);
3733
3734 }
3735 }
3736 }
b34976b6 3737 return TRUE;
a85d7ed0 3738}
e3e9290d
AA		 3739\f
3740/* Support for core dump NOTE sections. */
a85d7ed0 3741
b34976b6 3742static bfd_boolean
2c3fc389 3743elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note)
979f4a38
NC		 3744{
3745 int offset;
eea6121a 3746 unsigned int size;
979f4a38
NC		 3747
3748 switch (note->descsz)
3749 {
ceada896
AA		 3750 default:
3751 return FALSE;
979f4a38 3752
ceada896
AA		 3753 case 224: /* S/390 Linux. */
3754 /* pr_cursig */
3755 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
979f4a38 3756
ceada896
AA		 3757 /* pr_pid */
3758 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
979f4a38 3759
ceada896
AA		 3760 /* pr_reg */
3761 offset = 72;
3762 size = 144;
3763 break;
979f4a38
NC		 3764 }
3765
3766 /* Make a ".reg/999" section. */
3767 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 3768 size, note->descpos + offset);
979f4a38
NC		 3769}
3770
e3e9290d
AA		 3771static bfd_boolean
3772elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3773{
3774 switch (note->descsz)
3775 {
3776 default:
3777 return FALSE;
3778
3779 case 124: /* sizeof(struct elf_prpsinfo) on s390 */
3780 elf_tdata (abfd)->core->pid
3781 = bfd_get_32 (abfd, note->descdata + 12);
3782 elf_tdata (abfd)->core->program
3783 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
3784 elf_tdata (abfd)->core->command
3785 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
3786 break;
3787 }
3788
3789 /* Note that for some reason, a spurious space is tacked
3790 onto the end of the args in some (at least one anyway)
3791 implementations, so strip it off if it exists. */
3792
3793 {
3794 char *command = elf_tdata (abfd)->core->command;
3795 int n = strlen (command);
3796
3797 if (0 < n && command[n - 1] == ' ')
3798 command[n - 1] = '\0';
3799 }
3800
3801 return TRUE;
3802}
3803
3804static char *
3805elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
3806 int note_type, ...)
3807{
3808 va_list ap;
3809
3810 switch (note_type)
3811 {
3812 default:
3813 return NULL;
3814
3815 case NT_PRPSINFO:
3816 {
602f1657 3817 char data[124] ATTRIBUTE_NONSTRING = { 0 };
e3e9290d
AA		 3818 const char *fname, *psargs;
3819
3820 va_start (ap, note_type);
3821 fname = va_arg (ap, const char *);
3822 psargs = va_arg (ap, const char *);
3823 va_end (ap);
3824
3825 strncpy (data + 28, fname, 16);
898ade12 3826#if GCC_VERSION == 8000 || GCC_VERSION == 8001
95da9854 3827 DIAGNOSTIC_PUSH;
be3e27bb 3828 /* GCC 8.0 and 8.1 warn about 80 equals destination size with
95da9854
L		 3829 -Wstringop-truncation:
3830 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643
3831 */
95da9854
L		 3832 DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION;
3833#endif
e3e9290d 3834 strncpy (data + 44, psargs, 80);
898ade12 3835#if GCC_VERSION == 8000 || GCC_VERSION == 8001
95da9854 3836 DIAGNOSTIC_POP;
fe75810f 3837#endif
e3e9290d
AA		 3838 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3839 &data, sizeof (data));
3840 }
3841
3842 case NT_PRSTATUS:
3843 {
3844 char data[224] = { 0 };
3845 long pid;
3846 int cursig;
3847 const void *gregs;
3848
3849 va_start (ap, note_type);
3850 pid = va_arg (ap, long);
3851 cursig = va_arg (ap, int);
3852 gregs = va_arg (ap, const void *);
3853 va_end (ap);
3854
3855 bfd_put_16 (abfd, cursig, data + 12);
3856 bfd_put_32 (abfd, pid, data + 24);
3857 memcpy (data + 72, gregs, 144);
3858 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3859 &data, sizeof (data));
3860 }
3861 }
3862 /* NOTREACHED */
3863}
3864\f
4c45e5c9
JJ		 3865/* Return address for Ith PLT stub in section PLT, for relocation REL
3866 or (bfd_vma) -1 if it should not be included. */
3867
3868static bfd_vma
3869elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3870 const arelent *rel ATTRIBUTE_UNUSED)
3871{
3872 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3873}
3874
643f7afb
AK		 3875/* Merge backend specific data from an object file to the output
3876 object file when linking. */
3877
55786da2 3878static bfd_boolean
50e03d47 3879elf32_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
55786da2 3880{
50e03d47
AM		 3881 bfd *obfd = info->output_bfd;
3882
643f7afb
AK		 3883 if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
3884 return TRUE;
3885
50e03d47 3886 if (!elf_s390_merge_obj_attributes (ibfd, info))
643f7afb
AK		 3887 return FALSE;
3888
55786da2
AK		 3889 elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
3890 return TRUE;
3891}
3892
4c45e5c9 3893
6d00b590 3894#define TARGET_BIG_SYM s390_elf32_vec
a85d7ed0
NC		 3895#define TARGET_BIG_NAME "elf32-s390"
3896#define ELF_ARCH bfd_arch_s390
ae95ffa6 3897#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 3898#define ELF_MACHINE_CODE EM_S390
3899#define ELF_MACHINE_ALT1 EM_S390_OLD
3900#define ELF_MAXPAGESIZE 0x1000
3901
3902#define elf_backend_can_gc_sections 1
51b64d56 3903#define elf_backend_can_refcount 1
a85d7ed0
NC		 3904#define elf_backend_want_got_plt 1
3905#define elf_backend_plt_readonly 1
3906#define elf_backend_want_plt_sym 0
3907#define elf_backend_got_header_size 12
5474d94f 3908#define elf_backend_want_dynrelro 1
b491616a 3909#define elf_backend_rela_normal 1
a85d7ed0 3910
26e41594 3911#define elf_info_to_howto elf_s390_info_to_howto
a85d7ed0 3912
a85d7ed0
NC		 3913#define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
3914#define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
3915#define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
157090f7 3916#define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
a85d7ed0 3917
55786da2
AK		 3918#define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
3919
a85d7ed0 3920#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
26e41594 3921#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c 3922#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
9d19e4fd 3923#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
a85d7ed0
NC		 3924#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3925#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
26e41594 3926#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
0451c93c 3927#define elf_backend_reloc_type_class elf_s390_reloc_type_class
26e41594 3928#define elf_backend_relocate_section elf_s390_relocate_section
a85d7ed0 3929#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 3930#define elf_backend_init_index_section _bfd_elf_init_1_index_section
979f4a38 3931#define elf_backend_grok_prstatus elf_s390_grok_prstatus
e3e9290d
AA		 3932#define elf_backend_grok_psinfo elf_s390_grok_psinfo
3933#define elf_backend_write_core_note elf_s390_write_core_note
4c45e5c9 3934#define elf_backend_plt_sym_val elf_s390_plt_sym_val
07d6d2b8 3935#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
a85d7ed0 3936
69fc87f1 3937#define bfd_elf32_mkobject elf_s390_mkobject
26e41594 3938#define elf_backend_object_p elf_s390_object_p
a85d7ed0 3939
a2f63b2e
MR		 3940#define elf_backend_linux_prpsinfo32_ugid16 TRUE
3941
a85d7ed0 3942#include "elf32-target.h"
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