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[thirdparty/binutils-gdb.git] / bfd / elf64-s390.c
CommitLineData
a85d7ed0 1/* IBM S/390-specific support for 64-bit ELF
219d1afa 2 Copyright (C) 2000-2018 Free Software Foundation, Inc.
a85d7ed0
NC		 3 Contributed Martin Schwidefsky (schwidefsky@de.ibm.com).
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
a85d7ed0
NC		 10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
3e110533 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
53e09e0a 20 02110-1301, USA. */
a85d7ed0 21
a85d7ed0 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
a85d7ed0
NC		 24#include "bfdlink.h"
25#include "libbfd.h"
26#include "elf-bfd.h"
a85d7ed0 27#include "elf/s390.h"
b4cbbe8f 28#include "elf-s390.h"
e3e9290d 29#include <stdarg.h>
a85d7ed0
NC		 30
31/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
32 from smaller values. Start with zero, widen, *then* decrement. */
33#define MINUS_ONE (((bfd_vma)0) - 1)
34
2c3fc389
NC		 35static bfd_reloc_status_type
36s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
37 asection *, bfd *, char **);
38static bfd_reloc_status_type
39s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
40 asection *, bfd *, char **);
41
a85d7ed0
NC		 42/* The relocation "howto" table. */
43static reloc_howto_type elf_howto_table[] =
44{
45 HOWTO (R_390_NONE, /* type */
46 0, /* rightshift */
6346d5ca 47 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
a85d7ed0 48 0, /* bitsize */
b34976b6 49 FALSE, /* pc_relative */
a85d7ed0
NC		 50 0, /* bitpos */
51 complain_overflow_dont, /* complain_on_overflow */
52 bfd_elf_generic_reloc, /* special_function */
53 "R_390_NONE", /* name */
b34976b6 54 FALSE, /* partial_inplace */
a85d7ed0
NC		 55 0, /* src_mask */
56 0, /* dst_mask */
b34976b6
AM		 57 FALSE), /* pcrel_offset */
58
07d6d2b8
AM		 59 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
60 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
61 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
62 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
63 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
64 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
65 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
66 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
5236c819 67 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8 68 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
15f8604d 69 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
07d6d2b8 70 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
5236c819 71 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
07d6d2b8 72 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
5236c819 73 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8
AM		 74 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
75 HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
76 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE),
77 HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
5236c819 78 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE),
07d6d2b8 79 HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
5236c819 80 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE),
07d6d2b8 81 HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
5236c819 82 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE),
07d6d2b8 83 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
5236c819 84 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE),
07d6d2b8
AM		 85 HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
86 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE),
87 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
88 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
89 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
90 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
91 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
92 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
93 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
5236c819
MS		 94 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
95 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8 96 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
5236c819
MS		 97 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
98 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
07d6d2b8 99 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
5236c819 100 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
07d6d2b8
AM		 101 HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
102 bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE),
5236c819 103 HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
07d6d2b8 104 bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
5236c819 105 HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
07d6d2b8 106 bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
5236c819 107 HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
07d6d2b8 108 bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
5236c819 109 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8
AM		 110 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE),
111 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
5236c819 112 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
07d6d2b8 113 HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 114 bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE),
115 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
116 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
07d6d2b8 117 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 118 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
119 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
120 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
121 HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
122 bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE),
123 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
124 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE),
07d6d2b8 125 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
5236c819 126 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
07d6d2b8 127 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
5236c819 128 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
07d6d2b8 129 HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
5236c819 130 bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE),
69fc87f1
MS		 131 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
132 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
133 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
134 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
135 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
136 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
137 EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */
07d6d2b8 138 HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
69fc87f1
MS		 139 bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
140 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
141 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
142 EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */
143 HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
144 bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
145 EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */
146 HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
147 bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
148 EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */
07d6d2b8 149 HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
69fc87f1
MS		 150 bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
151 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
152 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
153 EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */
07d6d2b8 154 HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
69fc87f1
MS		 155 bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
156 EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */
157 HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
158 bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
159 HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
160 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
161 HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
162 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
163 HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
164 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
07d6d2b8 165 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
bd1ea41b
MS		 166 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
167 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
168 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
07d6d2b8 169 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
bd1ea41b
MS		 170 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
171 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
172 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
470b557a
AK		 173 HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
174 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE),
07d6d2b8
AM		 175 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
176 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
177 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
fb798c50 178 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
07d6d2b8
AM		 179 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
180 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
181 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
fb798c50 182 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
a85d7ed0
NC		 183};
184
185/* GNU extension to record C++ vtable hierarchy. */
186static reloc_howto_type elf64_s390_vtinherit_howto =
b34976b6 187 HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
a85d7ed0 188static reloc_howto_type elf64_s390_vtentry_howto =
b34976b6 189 HOWTO (R_390_GNU_VTENTRY, 0,4,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
a85d7ed0
NC		 190
191static reloc_howto_type *
2c3fc389
NC		 192elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
193 bfd_reloc_code_real_type code)
a85d7ed0 194{
0451c93c
MS		 195 switch (code)
196 {
197 case BFD_RELOC_NONE:
198 return &elf_howto_table[(int) R_390_NONE];
199 case BFD_RELOC_8:
200 return &elf_howto_table[(int) R_390_8];
201 case BFD_RELOC_390_12:
202 return &elf_howto_table[(int) R_390_12];
203 case BFD_RELOC_16:
204 return &elf_howto_table[(int) R_390_16];
205 case BFD_RELOC_32:
206 return &elf_howto_table[(int) R_390_32];
207 case BFD_RELOC_CTOR:
208 return &elf_howto_table[(int) R_390_32];
209 case BFD_RELOC_32_PCREL:
210 return &elf_howto_table[(int) R_390_PC32];
211 case BFD_RELOC_390_GOT12:
212 return &elf_howto_table[(int) R_390_GOT12];
213 case BFD_RELOC_32_GOT_PCREL:
214 return &elf_howto_table[(int) R_390_GOT32];
215 case BFD_RELOC_390_PLT32:
216 return &elf_howto_table[(int) R_390_PLT32];
217 case BFD_RELOC_390_COPY:
218 return &elf_howto_table[(int) R_390_COPY];
219 case BFD_RELOC_390_GLOB_DAT:
220 return &elf_howto_table[(int) R_390_GLOB_DAT];
221 case BFD_RELOC_390_JMP_SLOT:
222 return &elf_howto_table[(int) R_390_JMP_SLOT];
223 case BFD_RELOC_390_RELATIVE:
224 return &elf_howto_table[(int) R_390_RELATIVE];
225 case BFD_RELOC_32_GOTOFF:
5236c819 226 return &elf_howto_table[(int) R_390_GOTOFF32];
0451c93c
MS		 227 case BFD_RELOC_390_GOTPC:
228 return &elf_howto_table[(int) R_390_GOTPC];
229 case BFD_RELOC_390_GOT16:
230 return &elf_howto_table[(int) R_390_GOT16];
231 case BFD_RELOC_16_PCREL:
232 return &elf_howto_table[(int) R_390_PC16];
fb798c50
AK		 233 case BFD_RELOC_390_PC12DBL:
234 return &elf_howto_table[(int) R_390_PC12DBL];
235 case BFD_RELOC_390_PLT12DBL:
236 return &elf_howto_table[(int) R_390_PLT12DBL];
0451c93c
MS		 237 case BFD_RELOC_390_PC16DBL:
238 return &elf_howto_table[(int) R_390_PC16DBL];
239 case BFD_RELOC_390_PLT16DBL:
240 return &elf_howto_table[(int) R_390_PLT16DBL];
fb798c50
AK		 241 case BFD_RELOC_390_PC24DBL:
242 return &elf_howto_table[(int) R_390_PC24DBL];
243 case BFD_RELOC_390_PLT24DBL:
244 return &elf_howto_table[(int) R_390_PLT24DBL];
0451c93c
MS		 245 case BFD_RELOC_390_PC32DBL:
246 return &elf_howto_table[(int) R_390_PC32DBL];
247 case BFD_RELOC_390_PLT32DBL:
248 return &elf_howto_table[(int) R_390_PLT32DBL];
249 case BFD_RELOC_390_GOTPCDBL:
250 return &elf_howto_table[(int) R_390_GOTPCDBL];
251 case BFD_RELOC_64:
252 return &elf_howto_table[(int) R_390_64];
253 case BFD_RELOC_64_PCREL:
254 return &elf_howto_table[(int) R_390_PC64];
255 case BFD_RELOC_390_GOT64:
256 return &elf_howto_table[(int) R_390_GOT64];
257 case BFD_RELOC_390_PLT64:
258 return &elf_howto_table[(int) R_390_PLT64];
259 case BFD_RELOC_390_GOTENT:
260 return &elf_howto_table[(int) R_390_GOTENT];
5236c819
MS		 261 case BFD_RELOC_16_GOTOFF:
262 return &elf_howto_table[(int) R_390_GOTOFF16];
263 case BFD_RELOC_390_GOTOFF64:
264 return &elf_howto_table[(int) R_390_GOTOFF64];
265 case BFD_RELOC_390_GOTPLT12:
266 return &elf_howto_table[(int) R_390_GOTPLT12];
267 case BFD_RELOC_390_GOTPLT16:
268 return &elf_howto_table[(int) R_390_GOTPLT16];
269 case BFD_RELOC_390_GOTPLT32:
270 return &elf_howto_table[(int) R_390_GOTPLT32];
271 case BFD_RELOC_390_GOTPLT64:
272 return &elf_howto_table[(int) R_390_GOTPLT64];
273 case BFD_RELOC_390_GOTPLTENT:
274 return &elf_howto_table[(int) R_390_GOTPLTENT];
275 case BFD_RELOC_390_PLTOFF16:
276 return &elf_howto_table[(int) R_390_PLTOFF16];
277 case BFD_RELOC_390_PLTOFF32:
278 return &elf_howto_table[(int) R_390_PLTOFF32];
279 case BFD_RELOC_390_PLTOFF64:
280 return &elf_howto_table[(int) R_390_PLTOFF64];
69fc87f1
MS		 281 case BFD_RELOC_390_TLS_LOAD:
282 return &elf_howto_table[(int) R_390_TLS_LOAD];
283 case BFD_RELOC_390_TLS_GDCALL:
284 return &elf_howto_table[(int) R_390_TLS_GDCALL];
285 case BFD_RELOC_390_TLS_LDCALL:
286 return &elf_howto_table[(int) R_390_TLS_LDCALL];
287 case BFD_RELOC_390_TLS_GD64:
288 return &elf_howto_table[(int) R_390_TLS_GD64];
289 case BFD_RELOC_390_TLS_GOTIE12:
290 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
291 case BFD_RELOC_390_TLS_GOTIE64:
292 return &elf_howto_table[(int) R_390_TLS_GOTIE64];
293 case BFD_RELOC_390_TLS_LDM64:
294 return &elf_howto_table[(int) R_390_TLS_LDM64];
295 case BFD_RELOC_390_TLS_IE64:
296 return &elf_howto_table[(int) R_390_TLS_IE64];
297 case BFD_RELOC_390_TLS_IEENT:
298 return &elf_howto_table[(int) R_390_TLS_IEENT];
299 case BFD_RELOC_390_TLS_LE64:
300 return &elf_howto_table[(int) R_390_TLS_LE64];
301 case BFD_RELOC_390_TLS_LDO64:
302 return &elf_howto_table[(int) R_390_TLS_LDO64];
303 case BFD_RELOC_390_TLS_DTPMOD:
304 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
305 case BFD_RELOC_390_TLS_DTPOFF:
306 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
307 case BFD_RELOC_390_TLS_TPOFF:
308 return &elf_howto_table[(int) R_390_TLS_TPOFF];
bd1ea41b
MS		 309 case BFD_RELOC_390_20:
310 return &elf_howto_table[(int) R_390_20];
311 case BFD_RELOC_390_GOT20:
312 return &elf_howto_table[(int) R_390_GOT20];
313 case BFD_RELOC_390_GOTPLT20:
314 return &elf_howto_table[(int) R_390_GOTPLT20];
315 case BFD_RELOC_390_TLS_GOTIE20:
316 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
470b557a
AK		 317 case BFD_RELOC_390_IRELATIVE:
318 return &elf_howto_table[(int) R_390_IRELATIVE];
5236c819
MS		 319 case BFD_RELOC_VTABLE_INHERIT:
320 return &elf64_s390_vtinherit_howto;
321 case BFD_RELOC_VTABLE_ENTRY:
322 return &elf64_s390_vtentry_howto;
0451c93c
MS		 323 default:
324 break;
325 }
a85d7ed0
NC		 326 return 0;
327}
328
157090f7
AM		 329static reloc_howto_type *
330elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
331 const char *r_name)
332{
333 unsigned int i;
334
335 for (i = 0;
336 i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
337 i++)
338 if (elf_howto_table[i].name != NULL
339 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
340 return &elf_howto_table[i];
341
0bc7245a
JK		 342 if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
343 return &elf64_s390_vtinherit_howto;
344 if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
345 return &elf64_s390_vtentry_howto;
157090f7
AM		 346
347 return NULL;
348}
349
a85d7ed0
NC		 350/* We need to use ELF64_R_TYPE so we have our own copy of this function,
351 and elf64-s390.c has its own copy. */
352
353static void
2c3fc389
NC		 354elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
355 arelent *cache_ptr,
356 Elf_Internal_Rela *dst)
a85d7ed0 357{
d0fb9a8d
JJ		 358 unsigned int r_type = ELF64_R_TYPE(dst->r_info);
359 switch (r_type)
a85d7ed0
NC		 360 {
361 case R_390_GNU_VTINHERIT:
362 cache_ptr->howto = &elf64_s390_vtinherit_howto;
363 break;
364
365 case R_390_GNU_VTENTRY:
366 cache_ptr->howto = &elf64_s390_vtentry_howto;
367 break;
368
369 default:
d0fb9a8d
JJ		 370 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
371 {
695344c0 372 /* xgettext:c-format */
871b3ab2 373 _bfd_error_handler (_("%pB: invalid relocation type %d"),
4eca0228 374 abfd, (int) r_type);
d0fb9a8d
JJ		 375 r_type = R_390_NONE;
376 }
377 cache_ptr->howto = &elf_howto_table[r_type];
99c79b2e 378 }
a85d7ed0
NC		 379}
380
69fc87f1
MS		 381/* A relocation function which doesn't do anything. */
382static bfd_reloc_status_type
2c3fc389
NC		 383s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
384 arelent *reloc_entry,
385 asymbol *symbol ATTRIBUTE_UNUSED,
386 void * data ATTRIBUTE_UNUSED,
387 asection *input_section,
388 bfd *output_bfd,
389 char **error_message ATTRIBUTE_UNUSED)
69fc87f1
MS		 390{
391 if (output_bfd)
392 reloc_entry->address += input_section->output_offset;
393 return bfd_reloc_ok;
394}
395
bd1ea41b
MS		 396/* Handle the large displacement relocs. */
397static bfd_reloc_status_type
2c3fc389
NC		 398s390_elf_ldisp_reloc (bfd *abfd,
399 arelent *reloc_entry,
400 asymbol *symbol,
401 void * data,
402 asection *input_section,
403 bfd *output_bfd,
404 char **error_message ATTRIBUTE_UNUSED)
bd1ea41b
MS		 405{
406 reloc_howto_type *howto = reloc_entry->howto;
407 bfd_vma relocation;
408 bfd_vma insn;
409
410 if (output_bfd != (bfd *) NULL
411 && (symbol->flags & BSF_SECTION_SYM) == 0
412 && (! howto->partial_inplace
413 || reloc_entry->addend == 0))
414 {
415 reloc_entry->address += input_section->output_offset;
416 return bfd_reloc_ok;
417 }
418 if (output_bfd != NULL)
419 return bfd_reloc_continue;
420
07515404 421 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b
MS		 422 return bfd_reloc_outofrange;
423
424 relocation = (symbol->value
425 + symbol->section->output_section->vma
426 + symbol->section->output_offset);
427 relocation += reloc_entry->addend;
428 if (howto->pc_relative)
429 {
430 relocation -= (input_section->output_section->vma
431 + input_section->output_offset);
432 relocation -= reloc_entry->address;
433 }
434
68ffbac6 435 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
bd1ea41b
MS		 436 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
437 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
438
439 if ((bfd_signed_vma) relocation < - 0x80000
440 || (bfd_signed_vma) relocation > 0x7ffff)
441 return bfd_reloc_overflow;
442 else
443 return bfd_reloc_ok;
444}
445
b34976b6 446static bfd_boolean
2c3fc389 447elf_s390_is_local_label_name (bfd *abfd, const char *name)
a85d7ed0
NC		 448{
449 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 450 return TRUE;
a85d7ed0
NC		 451
452 return _bfd_elf_is_local_label_name (abfd, name);
453}
454
455/* Functions for the 390 ELF linker. */
456
457/* The name of the dynamic interpreter. This is put in the .interp
458 section. */
459
87049b0d 460#define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
a85d7ed0 461
64285810
MS		 462/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
463 copying dynamic variables from a shared lib into an app's dynbss
464 section, and instead use a dynamic relocation to point into the
465 shared lib. */
466#define ELIMINATE_COPY_RELOCS 1
467
a85d7ed0
NC		 468/* The size in bytes of the first entry in the procedure linkage table. */
469#define PLT_FIRST_ENTRY_SIZE 32
470/* The size in bytes of an entry in the procedure linkage table. */
99c79b2e 471#define PLT_ENTRY_SIZE 32
a85d7ed0
NC		 472
473#define GOT_ENTRY_SIZE 8
474
470b557a
AK		 475#define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela)
476
a85d7ed0
NC		 477/* The first three entries in a procedure linkage table are reserved,
478 and the initial contents are unimportant (we zero them out).
479 Subsequent entries look like this. See the SVR4 ABI 386
480 supplement to see how this works. */
481
482/* For the s390, simple addr offset can only be 0 - 4096.
483 To use the full 16777216 TB address space, several instructions
484 are needed to load an address in a register and execute
485 a branch( or just saving the address)
486
99c79b2e 487 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC		 488
489/* The first 3 words in the GOT are then reserved.
490 Word 0 is the address of the dynamic table.
491 Word 1 is a pointer to a structure describing the object
492 Word 2 is used to point to the loader entry address.
493
494 The code for PLT entries looks like this:
495
496 The GOT holds the address in the PLT to be executed.
497 The loader then gets:
3b67f094
MK		 498 48(15) = Pointer to the structure describing the object.
499 56(15) = Offset in symbol table
a85d7ed0
NC		 500 The loader must then find the module where the function is
501 and insert the address in the GOT.
502
503 PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
07d6d2b8
AM		 504 LG 1,0(1) # 6 bytes Load address from GOT in r1
505 BCR 15,1 # 2 bytes Jump to address
506 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
507 LGF 1,12(1) # 6 bytes Load offset in symbl table in r1
508 BRCL 15,-x # 6 bytes Jump to start of PLT
509 .long ? # 4 bytes offset into .rela.plt
a85d7ed0
NC		 510
511 Total = 32 bytes per PLT entry
512 Fixup at offset 2: relative address to GOT entry
513 Fixup at offset 22: relative branch to PLT0
a7e28bbe 514 Fixup at offset 28: 32 bit offset into .rela.plt
a85d7ed0 515
a7e28bbe
AK		 516 A 32 bit offset into the symbol table is enough. It allows for
517 .rela.plt sections up to a size of 2 gigabyte. A single dynamic
518 object (the main program, any shared library) is limited to 4GB in
519 size. Having a .rela.plt of 2GB would already make the .plt
520 section bigger than 8GB. */
a85d7ed0 521
9aa17453
AK		 522static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] =
523 {
07d6d2b8
AM		 524 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
525 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */
526 0x07, 0xf1, /* br %r1 */
527 0x0d, 0x10, /* basr %r1,%r0 */
528 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */
529 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */
530 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */
9aa17453 531 };
a85d7ed0
NC		 532
533/* The first PLT entry pushes the offset into the symbol table
a7e28bbe
AK		 534 from R1 onto the stack at 56(15) and the loader object info
535 at 48(15), loads the loader address in R1 and jumps to it. */
a85d7ed0
NC		 536
537/* The first entry in the PLT:
538
539 PLT0:
540 STG 1,56(15) # r1 contains the offset into the symbol table
541 LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
542 MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
543 LG 1,16(1) # get entry address of loader
544 BCR 15,1 # jump to loader
545
546 Fixup at offset 8: relative address to start of GOT. */
547
9aa17453
AK		 548static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] =
549 {
07d6d2b8
AM		 550 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */
551 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
552 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */
553 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */
554 0x07, 0xf1, /* br %r1 */
555 0x07, 0x00, /* nopr %r0 */
556 0x07, 0x00, /* nopr %r0 */
557 0x07, 0x00 /* nopr %r0 */
9aa17453 558 };
a85d7ed0 559
a85d7ed0
NC		 560
561/* s390 ELF linker hash entry. */
562
563struct elf_s390_link_hash_entry
564{
0451c93c 565 struct elf_link_hash_entry elf;
a85d7ed0 566
0451c93c 567 /* Track dynamic relocs copied for this symbol. */
00d8c7a9 568 struct elf_dyn_relocs *dyn_relocs;
5236c819
MS		 569
570 /* Number of GOTPLT references for a function. */
571 bfd_signed_vma gotplt_refcount;
69fc87f1
MS		 572
573#define GOT_UNKNOWN 0
574#define GOT_NORMAL 1
575#define GOT_TLS_GD 2
576#define GOT_TLS_IE 3
577#define GOT_TLS_IE_NLT 3
578 unsigned char tls_type;
470b557a
AK		 579
580 /* For pointer equality reasons we might need to change the symbol
581 type from STT_GNU_IFUNC to STT_FUNC together with its value and
582 section entry. So after alloc_dynrelocs only these values should
583 be used. In order to check whether a symbol is IFUNC use
584 s390_is_ifunc_symbol_p. */
585 bfd_vma ifunc_resolver_address;
586 asection *ifunc_resolver_section;
a85d7ed0
NC		 587};
588
69fc87f1
MS		 589#define elf_s390_hash_entry(ent) \
590 ((struct elf_s390_link_hash_entry *)(ent))
591
470b557a
AK		 592/* This structure represents an entry in the local PLT list needed for
593 local IFUNC symbols. */
594struct plt_entry
595{
596 /* The section of the local symbol.
597 Set in relocate_section and used in finish_dynamic_sections. */
598 asection *sec;
599
600 union
601 {
602 bfd_signed_vma refcount;
603 bfd_vma offset;
604 } plt;
605};
606
0ffa91dd
NC		 607/* NOTE: Keep this structure in sync with
608 the one declared in elf32-s390.c. */
69fc87f1
MS		 609struct elf_s390_obj_tdata
610{
611 struct elf_obj_tdata root;
612
470b557a
AK		 613 /* A local PLT is needed for ifunc symbols. */
614 struct plt_entry *local_plt;
615
0ffa91dd 616 /* TLS type for each local got entry. */
69fc87f1
MS		 617 char *local_got_tls_type;
618};
619
620#define elf_s390_tdata(abfd) \
621 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
622
470b557a
AK		 623#define elf_s390_local_plt(abfd) \
624 (elf_s390_tdata (abfd)->local_plt)
625
69fc87f1
MS		 626#define elf_s390_local_got_tls_type(abfd) \
627 (elf_s390_tdata (abfd)->local_got_tls_type)
628
0ffa91dd
NC		 629#define is_s390_elf(bfd) \
630 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
631 && elf_tdata (bfd) != NULL \
4dfe6ac6 632 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 633
69fc87f1 634static bfd_boolean
62d7a5f6 635elf_s390_mkobject (bfd *abfd)
69fc87f1 636{
0ffa91dd 637 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 638 S390_ELF_DATA);
69fc87f1
MS		 639}
640
641static bfd_boolean
2c3fc389 642elf_s390_object_p (bfd *abfd)
69fc87f1 643{
69fc87f1
MS		 644 /* Set the right machine number for an s390 elf32 file. */
645 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
646}
647
a85d7ed0
NC		 648/* s390 ELF linker hash table. */
649
650struct elf_s390_link_hash_table
651{
0451c93c 652 struct elf_link_hash_table elf;
a85d7ed0 653
0451c93c 654 /* Short-cuts to get to dynamic linker sections. */
470b557a 655 asection *irelifunc;
ec338859 656
69fc87f1
MS		 657 union {
658 bfd_signed_vma refcount;
659 bfd_vma offset;
660 } tls_ldm_got;
661
87d72d41
AM		 662 /* Small local sym cache. */
663 struct sym_cache sym_cache;
b4cbbe8f
AK		 664
665 /* Options passed from the linker. */
666 struct s390_elf_params *params;
0451c93c 667};
a85d7ed0
NC		 668
669/* Get the s390 ELF linker hash table from a link_info structure. */
670
ceada896
AA		 671#define elf_s390_hash_table(p) \
672 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
673 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
a85d7ed0 674
470b557a
AK		 675#define ELF64 1
676#include "elf-s390-common.c"
677
a85d7ed0
NC		 678/* Create an entry in an s390 ELF linker hash table. */
679
680static struct bfd_hash_entry *
2c3fc389
NC		 681link_hash_newfunc (struct bfd_hash_entry *entry,
682 struct bfd_hash_table *table,
683 const char *string)
a85d7ed0 684{
a85d7ed0
NC		 685 /* Allocate the structure if it has not already been allocated by a
686 subclass. */
0451c93c
MS		 687 if (entry == NULL)
688 {
689 entry = bfd_hash_allocate (table,
690 sizeof (struct elf_s390_link_hash_entry));
691 if (entry == NULL)
692 return entry;
693 }
a85d7ed0
NC		 694
695 /* Call the allocation method of the superclass. */
0451c93c
MS		 696 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
697 if (entry != NULL)
a85d7ed0 698 {
0451c93c
MS		 699 struct elf_s390_link_hash_entry *eh;
700
701 eh = (struct elf_s390_link_hash_entry *) entry;
702 eh->dyn_relocs = NULL;
5236c819 703 eh->gotplt_refcount = 0;
69fc87f1 704 eh->tls_type = GOT_UNKNOWN;
470b557a
AK		 705 eh->ifunc_resolver_address = 0;
706 eh->ifunc_resolver_section = NULL;
a85d7ed0
NC		 707 }
708
0451c93c 709 return entry;
a85d7ed0
NC		 710}
711
712/* Create an s390 ELF linker hash table. */
713
714static struct bfd_link_hash_table *
2c3fc389 715elf_s390_link_hash_table_create (bfd *abfd)
a85d7ed0
NC		 716{
717 struct elf_s390_link_hash_table *ret;
dc810e39 718 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
a85d7ed0 719
7bf52ea2 720 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
0451c93c 721 if (ret == NULL)
a85d7ed0
NC		 722 return NULL;
723
66eb6687 724 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 725 sizeof (struct elf_s390_link_hash_entry),
726 S390_ELF_DATA))
a85d7ed0 727 {
e2d34d7d 728 free (ret);
a85d7ed0
NC		 729 return NULL;
730 }
731
0451c93c
MS		 732 return &ret->elf.root;
733}
734
0451c93c
MS		 735/* Copy the extra info we tack onto an elf_link_hash_entry. */
736
737static void
2c3fc389
NC		 738elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
739 struct elf_link_hash_entry *dir,
740 struct elf_link_hash_entry *ind)
0451c93c
MS		 741{
742 struct elf_s390_link_hash_entry *edir, *eind;
743
744 edir = (struct elf_s390_link_hash_entry *) dir;
745 eind = (struct elf_s390_link_hash_entry *) ind;
746
747 if (eind->dyn_relocs != NULL)
748 {
749 if (edir->dyn_relocs != NULL)
750 {
00d8c7a9
AK		 751 struct elf_dyn_relocs **pp;
752 struct elf_dyn_relocs *p;
0451c93c 753
fcfa13d2 754 /* Add reloc counts against the indirect sym to the direct sym
0451c93c
MS		 755 list. Merge any entries against the same section. */
756 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
757 {
00d8c7a9 758 struct elf_dyn_relocs *q;
0451c93c
MS		 759
760 for (q = edir->dyn_relocs; q != NULL; q = q->next)
761 if (q->sec == p->sec)
762 {
763 q->pc_count += p->pc_count;
764 q->count += p->count;
765 *pp = p->next;
766 break;
767 }
768 if (q == NULL)
769 pp = &p->next;
770 }
771 *pp = edir->dyn_relocs;
772 }
773
774 edir->dyn_relocs = eind->dyn_relocs;
775 eind->dyn_relocs = NULL;
776 }
777
69fc87f1
MS		 778 if (ind->root.type == bfd_link_hash_indirect
779 && dir->got.refcount <= 0)
780 {
781 edir->tls_type = eind->tls_type;
782 eind->tls_type = GOT_UNKNOWN;
783 }
784
64285810
MS		 785 if (ELIMINATE_COPY_RELOCS
786 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 787 && dir->dynamic_adjusted)
788 {
789 /* If called to transfer flags for a weakdef during processing
790 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
791 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
e81830c5
AM		 792 if (dir->versioned != versioned_hidden)
793 dir->ref_dynamic |= ind->ref_dynamic;
f5385ebf
AM		 794 dir->ref_regular |= ind->ref_regular;
795 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
796 dir->needs_plt |= ind->needs_plt;
797 }
64285810 798 else
fcfa13d2 799 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 800}
a85d7ed0 801
69fc87f1 802static int
2c3fc389
NC		 803elf_s390_tls_transition (struct bfd_link_info *info,
804 int r_type,
805 int is_local)
69fc87f1 806{
0e1862bb 807 if (bfd_link_pic (info))
69fc87f1
MS		 808 return r_type;
809
810 switch (r_type)
811 {
812 case R_390_TLS_GD64:
813 case R_390_TLS_IE64:
814 if (is_local)
815 return R_390_TLS_LE64;
816 return R_390_TLS_IE64;
817 case R_390_TLS_GOTIE64:
818 if (is_local)
819 return R_390_TLS_LE64;
820 return R_390_TLS_GOTIE64;
821 case R_390_TLS_LDM64:
822 return R_390_TLS_LE64;
823 }
824
825 return r_type;
826}
827
a85d7ed0
NC		 828/* Look through the relocs for a section during the first phase, and
829 allocate space in the global offset table or procedure linkage
830 table. */
831
b34976b6 832static bfd_boolean
4dfe6ac6
NC		 833elf_s390_check_relocs (bfd *abfd,
834 struct bfd_link_info *info,
835 asection *sec,
836 const Elf_Internal_Rela *relocs)
a85d7ed0 837{
0451c93c 838 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 839 Elf_Internal_Shdr *symtab_hdr;
840 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 841 const Elf_Internal_Rela *rel;
842 const Elf_Internal_Rela *rel_end;
a85d7ed0 843 asection *sreloc;
5236c819 844 bfd_signed_vma *local_got_refcounts;
69fc87f1 845 int tls_type, old_tls_type;
a85d7ed0 846
0e1862bb 847 if (bfd_link_relocatable (info))
b34976b6 848 return TRUE;
a85d7ed0 849
0ffa91dd
NC		 850 BFD_ASSERT (is_s390_elf (abfd));
851
0451c93c 852 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 853 if (htab == NULL)
854 return FALSE;
855
0ffa91dd 856 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 857 sym_hashes = elf_sym_hashes (abfd);
5236c819 858 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 859
a85d7ed0
NC		 860 sreloc = NULL;
861
862 rel_end = relocs + sec->reloc_count;
863 for (rel = relocs; rel < rel_end; rel++)
864 {
69fc87f1 865 unsigned int r_type;
d42c267e 866 unsigned int r_symndx;
a85d7ed0 867 struct elf_link_hash_entry *h;
470b557a 868 Elf_Internal_Sym *isym;
a85d7ed0
NC		 869
870 r_symndx = ELF64_R_SYM (rel->r_info);
871
0451c93c
MS		 872 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
873 {
695344c0 874 /* xgettext:c-format */
871b3ab2 875 _bfd_error_handler (_("%pB: bad symbol index: %d"),
4eca0228 876 abfd, r_symndx);
b34976b6 877 return FALSE;
0451c93c
MS		 878 }
879
a85d7ed0 880 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK		 881 {
882 /* A local symbol. */
883 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
884 abfd, r_symndx);
885 if (isym == NULL)
886 return FALSE;
887
888 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
889 {
890 struct plt_entry *plt;
891
0cb79d69
AK		 892 if (htab->elf.dynobj == NULL)
893 htab->elf.dynobj = abfd;
894
470b557a
AK		 895 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
896 return FALSE;
897
898 if (local_got_refcounts == NULL)
899 {
900 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
901 return FALSE;
902 local_got_refcounts = elf_local_got_refcounts (abfd);
903 }
904 plt = elf_s390_local_plt (abfd);
905 plt[r_symndx].plt.refcount++;
906 }
907 h = NULL;
908 }
a85d7ed0 909 else
973a3492
L		 910 {
911 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
912 while (h->root.type == bfd_link_hash_indirect
913 || h->root.type == bfd_link_hash_warning)
914 h = (struct elf_link_hash_entry *) h->root.u.i.link;
915 }
a85d7ed0 916
5236c819
MS		 917 /* Create got section and local_got_refcounts array if they
918 are needed. */
69fc87f1
MS		 919 r_type = elf_s390_tls_transition (info,
920 ELF64_R_TYPE (rel->r_info),
921 h == NULL);
922 switch (r_type)
a85d7ed0
NC		 923 {
924 case R_390_GOT12:
947216bf 925 case R_390_GOT16:
bd1ea41b 926 case R_390_GOT20:
a85d7ed0
NC		 927 case R_390_GOT32:
928 case R_390_GOT64:
929 case R_390_GOTENT:
5236c819
MS		 930 case R_390_GOTPLT12:
931 case R_390_GOTPLT16:
bd1ea41b 932 case R_390_GOTPLT20:
5236c819
MS		 933 case R_390_GOTPLT32:
934 case R_390_GOTPLT64:
935 case R_390_GOTPLTENT:
69fc87f1
MS		 936 case R_390_TLS_GD64:
937 case R_390_TLS_GOTIE12:
bd1ea41b 938 case R_390_TLS_GOTIE20:
69fc87f1
MS		 939 case R_390_TLS_GOTIE64:
940 case R_390_TLS_IEENT:
941 case R_390_TLS_IE64:
942 case R_390_TLS_LDM64:
5236c819
MS		 943 if (h == NULL
944 && local_got_refcounts == NULL)
a85d7ed0 945 {
470b557a 946 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 947 return FALSE;
470b557a 948 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 949 }
470b557a 950
5236c819
MS		 951 /* Fall through. */
952 case R_390_GOTOFF16:
953 case R_390_GOTOFF32:
954 case R_390_GOTOFF64:
0451c93c
MS		 955 case R_390_GOTPC:
956 case R_390_GOTPCDBL:
f41345a7 957 if (htab->elf.sgot == NULL)
0451c93c
MS		 958 {
959 if (htab->elf.dynobj == NULL)
960 htab->elf.dynobj = abfd;
ce558b89 961 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
b34976b6 962 return FALSE;
0451c93c 963 }
5236c819
MS		 964 }
965
470b557a
AK		 966 if (h != NULL)
967 {
968 if (htab->elf.dynobj == NULL)
969 htab->elf.dynobj = abfd;
970 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
971 return FALSE;
972
973 /* Make sure an IFUNC symbol defined in a non-shared object
974 always gets a PLT slot. */
975 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
976 {
977 /* The symbol is called by the dynamic loader in order
978 to resolve the relocation. So it is in fact also
979 referenced. */
980 h->ref_regular = 1;
981 h->needs_plt = 1;
982 }
983 }
984
69fc87f1 985 switch (r_type)
5236c819 986 {
5236c819
MS		 987 case R_390_GOTPC:
988 case R_390_GOTPCDBL:
470b557a
AK		 989 /* These relocs do not need a GOT slot. They just load the
990 GOT pointer itself or address something else relative to
991 the GOT. Since the GOT pointer has been set up above we
992 are done. */
0451c93c 993 break;
d47b13e0
AK		 994 case R_390_GOTOFF16:
995 case R_390_GOTOFF32:
996 case R_390_GOTOFF64:
997 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
998 break;
1a0670f3 999 /* Fall through. */
ec338859 1000
fb798c50 1001 case R_390_PLT12DBL:
947216bf 1002 case R_390_PLT16DBL:
fb798c50 1003 case R_390_PLT24DBL:
a85d7ed0
NC		 1004 case R_390_PLT32:
1005 case R_390_PLT32DBL:
1006 case R_390_PLT64:
5236c819
MS		 1007 case R_390_PLTOFF16:
1008 case R_390_PLTOFF32:
1009 case R_390_PLTOFF64:
a85d7ed0 1010 /* This symbol requires a procedure linkage table entry. We
947216bf
AM		 1011 actually build the entry in adjust_dynamic_symbol,
1012 because this might be a case of linking PIC code which is
1013 never referenced by a dynamic object, in which case we
1014 don't need to generate a procedure linkage table entry
1015 after all. */
ec338859 1016
a85d7ed0 1017 /* If this is a local symbol, we resolve it directly without
947216bf 1018 creating a procedure linkage table entry. */
5236c819
MS		 1019 if (h != NULL)
1020 {
f5385ebf 1021 h->needs_plt = 1;
5236c819
MS		 1022 h->plt.refcount += 1;
1023 }
1024 break;
ec338859 1025
5236c819
MS		 1026 case R_390_GOTPLT12:
1027 case R_390_GOTPLT16:
bd1ea41b 1028 case R_390_GOTPLT20:
5236c819
MS		 1029 case R_390_GOTPLT32:
1030 case R_390_GOTPLT64:
1031 case R_390_GOTPLTENT:
1032 /* This symbol requires either a procedure linkage table entry
1033 or an entry in the local got. We actually build the entry
1034 in adjust_dynamic_symbol because whether this is really a
1035 global reference can change and with it the fact if we have
1036 to create a plt entry or a local got entry. To be able to
1037 make a once global symbol a local one we have to keep track
1038 of the number of gotplt references that exist for this
1039 symbol. */
1040 if (h != NULL)
1041 {
1042 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1043 h->needs_plt = 1;
5236c819
MS		 1044 h->plt.refcount += 1;
1045 }
69fc87f1
MS		 1046 else
1047 local_got_refcounts[r_symndx] += 1;
1048 break;
1049
1050 case R_390_TLS_LDM64:
1051 htab->tls_ldm_got.refcount += 1;
1052 break;
1053
1054 case R_390_TLS_IE64:
1055 case R_390_TLS_GOTIE12:
bd1ea41b 1056 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1057 case R_390_TLS_GOTIE64:
1058 case R_390_TLS_IEENT:
0e1862bb 1059 if (bfd_link_pic (info))
69fc87f1
MS		 1060 info->flags |= DF_STATIC_TLS;
1061 /* Fall through */
1062
1063 case R_390_GOT12:
26e41594 1064 case R_390_GOT16:
bd1ea41b 1065 case R_390_GOT20:
69fc87f1
MS		 1066 case R_390_GOT32:
1067 case R_390_GOT64:
1068 case R_390_GOTENT:
1069 case R_390_TLS_GD64:
1070 /* This symbol requires a global offset table entry. */
1071 switch (r_type)
1072 {
1073 default:
1074 case R_390_GOT12:
1075 case R_390_GOT16:
bd1ea41b 1076 case R_390_GOT20:
69fc87f1
MS		 1077 case R_390_GOT32:
1078 case R_390_GOTENT:
1079 tls_type = GOT_NORMAL;
1080 break;
1081 case R_390_TLS_GD64:
1082 tls_type = GOT_TLS_GD;
1083 break;
1084 case R_390_TLS_IE64:
1085 case R_390_TLS_GOTIE64:
1086 tls_type = GOT_TLS_IE;
1087 break;
1088 case R_390_TLS_GOTIE12:
bd1ea41b 1089 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1090 case R_390_TLS_IEENT:
1091 tls_type = GOT_TLS_IE_NLT;
1092 break;
1093 }
1094
1095 if (h != NULL)
1096 {
1097 h->got.refcount += 1;
1098 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1099 }
5236c819
MS		 1100 else
1101 {
1102 local_got_refcounts[r_symndx] += 1;
69fc87f1 1103 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
5236c819 1104 }
69fc87f1
MS		 1105 /* If a TLS symbol is accessed using IE at least once,
1106 there is no point to use dynamic model for it. */
1107 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1108 {
1109 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1110 {
4eca0228 1111 _bfd_error_handler
695344c0 1112 /* xgettext:c-format */
871b3ab2 1113 (_("%pB: `%s' accessed both as normal and thread local symbol"),
d003868e 1114 abfd, h->root.root.string);
69fc87f1
MS		 1115 return FALSE;
1116 }
1117 if (old_tls_type > tls_type)
1118 tls_type = old_tls_type;
1119 }
1120
1121 if (old_tls_type != tls_type)
1122 {
1123 if (h != NULL)
1124 elf_s390_hash_entry (h)->tls_type = tls_type;
1125 else
1126 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1127 }
1128
1129 if (r_type != R_390_TLS_IE64)
1130 break;
1131 /* Fall through */
1132
1133 case R_390_TLS_LE64:
e00d879a
AK		 1134 /* For static linking and executables this reloc will be
1135 calculated at linktime otherwise a TLS_TPOFF runtime
1136 reloc will be generated. */
0e1862bb 1137 if (r_type == R_390_TLS_LE64 && bfd_link_pie (info))
e00d879a
AK		 1138 break;
1139
0e1862bb 1140 if (!bfd_link_pic (info))
69fc87f1
MS		 1141 break;
1142 info->flags |= DF_STATIC_TLS;
1143 /* Fall through */
ec338859 1144
947216bf
AM		 1145 case R_390_8:
1146 case R_390_16:
a85d7ed0
NC		 1147 case R_390_32:
1148 case R_390_64:
fb798c50 1149 case R_390_PC12DBL:
947216bf
AM		 1150 case R_390_PC16:
1151 case R_390_PC16DBL:
fb798c50 1152 case R_390_PC24DBL:
a85d7ed0
NC		 1153 case R_390_PC32:
1154 case R_390_PC32DBL:
1155 case R_390_PC64:
99ba5125 1156 if (h != NULL && bfd_link_executable (info))
0451c93c
MS		 1157 {
1158 /* If this reloc is in a read-only section, we might
1159 need a copy reloc. We can't check reliably at this
1160 stage whether the section is read-only, as input
1161 sections have not yet been mapped to output sections.
1162 Tentatively set the flag for now, and correct in
1163 adjust_dynamic_symbol. */
f5385ebf 1164 h->non_got_ref = 1;
ec338859 1165
0e1862bb 1166 if (!bfd_link_pic (info))
470b557a
AK		 1167 {
1168 /* We may need a .plt entry if the function this reloc
1169 refers to is in a shared lib. */
1170 h->plt.refcount += 1;
1171 }
0451c93c 1172 }
ec338859 1173
a85d7ed0 1174 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1175 against a global symbol, or a non PC relative reloc
1176 against a local symbol, then we need to copy the reloc
1177 into the shared library. However, if we are linking with
1178 -Bsymbolic, we do not need to copy a reloc against a
1179 global symbol which is defined in an object we are
1180 including in the link (i.e., DEF_REGULAR is set). At
1181 this point we have not seen all the input files, so it is
1182 possible that DEF_REGULAR is not set now but will be set
1183 later (it is never cleared). In case of a weak definition,
1184 DEF_REGULAR may be cleared later by a strong definition in
1185 a shared library. We account for that possibility below by
1186 storing information in the relocs_copied field of the hash
1187 table entry. A similar situation occurs when creating
1188 shared libraries and symbol visibility changes render the
1189 symbol local.
1190
1191 If on the other hand, we are creating an executable, we
1192 may need to keep relocations for symbols satisfied by a
1193 dynamic library if we manage to avoid copy relocs for the
1194 symbol. */
0e1862bb 1195 if ((bfd_link_pic (info)
0451c93c
MS		 1196 && (sec->flags & SEC_ALLOC) != 0
1197 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1198 && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1199 && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1200 && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL
0451c93c
MS		 1201 && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1202 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1203 && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1204 || (h != NULL
8c21ca21 1205 && (! SYMBOLIC_BIND (info, h)
0451c93c 1206 || h->root.type == bfd_link_hash_defweak
f5385ebf 1207 || !h->def_regular))))
64285810 1208 || (ELIMINATE_COPY_RELOCS
0e1862bb 1209 && !bfd_link_pic (info)
0451c93c
MS		 1210 && (sec->flags & SEC_ALLOC) != 0
1211 && h != NULL
1212 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1213 || !h->def_regular)))
a85d7ed0 1214 {
00d8c7a9
AK		 1215 struct elf_dyn_relocs *p;
1216 struct elf_dyn_relocs **head;
ec338859 1217
0451c93c
MS		 1218 /* We must copy these reloc types into the output file.
1219 Create a reloc section in dynobj and make room for
1220 this reloc. */
a85d7ed0
NC		 1221 if (sreloc == NULL)
1222 {
440e9cd2
AK		 1223 if (htab->elf.dynobj == NULL)
1224 htab->elf.dynobj = abfd;
1225
83bac4b0
NC		 1226 sreloc = _bfd_elf_make_dynamic_reloc_section
1227 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
ec338859 1228
a85d7ed0 1229 if (sreloc == NULL)
83bac4b0 1230 return FALSE;
a85d7ed0 1231 }
ec338859 1232
0451c93c
MS		 1233 /* If this is a global symbol, we count the number of
1234 relocations we need for this symbol. */
1235 if (h != NULL)
a85d7ed0 1236 {
ec338859 1237 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS		 1238 }
1239 else
1240 {
ec338859
AM		 1241 /* Track dynamic relocs needed for local syms too.
1242 We really need local syms available to do this
1243 easily. Oh well. */
ec338859 1244 asection *s;
6edfbbad
DJ		 1245 void *vpp;
1246
87d72d41
AM		 1247 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1248 abfd, r_symndx);
1249 if (isym == NULL)
b34976b6 1250 return FALSE;
ec338859 1251
87d72d41
AM		 1252 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1253 if (s == NULL)
1254 s = sec;
1255
6edfbbad 1256 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1257 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1258 }
1259
1260 p = *head;
1261 if (p == NULL || p->sec != sec)
1262 {
1263 bfd_size_type amt = sizeof *p;
00d8c7a9 1264 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1265 bfd_alloc (htab->elf.dynobj, amt));
1266 if (p == NULL)
b34976b6 1267 return FALSE;
ec338859
AM		 1268 p->next = *head;
1269 *head = p;
1270 p->sec = sec;
1271 p->count = 0;
1272 p->pc_count = 0;
a85d7ed0 1273 }
ec338859
AM		 1274
1275 p->count += 1;
1276 if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
fb798c50
AK		 1277 || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL
1278 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
ec338859
AM		 1279 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1280 || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1281 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1282 || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1283 p->pc_count += 1;
a85d7ed0 1284 }
a85d7ed0 1285 break;
ec338859 1286
a85d7ed0
NC		 1287 /* This relocation describes the C++ object vtable hierarchy.
1288 Reconstruct it for later use during GC. */
947216bf 1289 case R_390_GNU_VTINHERIT:
c152c796 1290 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 1291 return FALSE;
947216bf 1292 break;
ec338859 1293
a85d7ed0
NC		 1294 /* This relocation describes which C++ vtable entries are actually
1295 used. Record for later use during GC. */
947216bf 1296 case R_390_GNU_VTENTRY:
d17e0c6e
JB		 1297 BFD_ASSERT (h != NULL);
1298 if (h != NULL
1299 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 1300 return FALSE;
947216bf 1301 break;
ec338859 1302
a85d7ed0
NC		 1303 default:
1304 break;
1305 }
1306 }
1307
b34976b6 1308 return TRUE;
a85d7ed0
NC		 1309}
1310
1311/* Return the section that should be marked against GC for a given
1312 relocation. */
1313
1314static asection *
07adf181
AM		 1315elf_s390_gc_mark_hook (asection *sec,
1316 struct bfd_link_info *info,
1317 Elf_Internal_Rela *rel,
1318 struct elf_link_hash_entry *h,
1319 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1320{
1321 if (h != NULL)
07adf181
AM		 1322 switch (ELF64_R_TYPE (rel->r_info))
1323 {
1324 case R_390_GNU_VTINHERIT:
1325 case R_390_GNU_VTENTRY:
1326 return NULL;
1327 }
1328
1329 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0
NC		 1330}
1331
5236c819
MS		 1332/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1333 entry but we found we will not create any. Called when we find we will
1334 not have any PLT for this symbol, by for example
1335 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1336 or elf_s390_size_dynamic_sections if no dynamic sections will be
1337 created (we're only linking static objects). */
1338
1339static void
2c3fc389 1340elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1341{
1342 if (h->elf.root.type == bfd_link_hash_warning)
1343 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1344
1345 if (h->gotplt_refcount <= 0)
1346 return;
1347
1348 /* We simply add the number of gotplt references to the number
1349 * of got references for this symbol. */
1350 h->elf.got.refcount += h->gotplt_refcount;
1351 h->gotplt_refcount = -1;
1352}
1353
63c1f59d
AM		 1354/* Find dynamic relocs for H that apply to read-only sections. */
1355
1356static asection *
1357readonly_dynrelocs (struct elf_link_hash_entry *h)
1358{
1359 struct elf_dyn_relocs *p;
1360
1361 for (p = elf_s390_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
1362 {
1363 asection *s = p->sec->output_section;
1364
1365 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1366 return p->sec;
1367 }
1368 return NULL;
1369}
1370
a85d7ed0
NC		 1371/* Adjust a symbol defined by a dynamic object and referenced by a
1372 regular object. The current definition is in some section of the
1373 dynamic object, but we're not including those sections. We have to
1374 change the definition to something the rest of the link can
1375 understand. */
1376
b34976b6 1377static bfd_boolean
4dfe6ac6
NC		 1378elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1379 struct elf_link_hash_entry *h)
a85d7ed0 1380{
0451c93c 1381 struct elf_s390_link_hash_table *htab;
5474d94f 1382 asection *s, *srel;
a85d7ed0 1383
470b557a
AK		 1384 /* STT_GNU_IFUNC symbol must go through PLT. */
1385 if (s390_is_ifunc_symbol_p (h))
d8ee9e44
AK		 1386 {
1387 /* All local STT_GNU_IFUNC references must be treated as local
1388 calls via local PLT. */
1389 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1390 {
1391 bfd_size_type pc_count = 0, count = 0;
1392 struct elf_dyn_relocs **pp;
1393 struct elf_s390_link_hash_entry *eh;
1394 struct elf_dyn_relocs *p;
1395
1396 eh = (struct elf_s390_link_hash_entry *) h;
1397 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1398 {
1399 pc_count += p->pc_count;
1400 p->count -= p->pc_count;
1401 p->pc_count = 0;
1402 count += p->count;
1403 if (p->count == 0)
1404 *pp = p->next;
1405 else
1406 pp = &p->next;
1407 }
1408
1409 if (pc_count || count)
1410 {
1411 h->needs_plt = 1;
1412 h->non_got_ref = 1;
1413 if (h->plt.refcount <= 0)
1414 h->plt.refcount = 1;
1415 else
1416 h->plt.refcount += 1;
1417 }
1418 }
1419
1420 if (h->plt.refcount <= 0)
1421 {
1422 h->plt.offset = (bfd_vma) -1;
1423 h->needs_plt = 0;
1424 }
1425 return TRUE;
1426 }
470b557a 1427
a85d7ed0
NC		 1428 /* If this is a function, put it in the procedure linkage table. We
1429 will fill in the contents of the procedure linkage table later
cedb70c5 1430 (although we could actually do it here). */
a85d7ed0 1431 if (h->type == STT_FUNC
f5385ebf 1432 || h->needs_plt)
a85d7ed0 1433 {
0451c93c 1434 if (h->plt.refcount <= 0
8c21ca21 1435 || SYMBOL_CALLS_LOCAL (info, h)
10e7c045 1436 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a85d7ed0
NC		 1437 {
1438 /* This case can occur if we saw a PLT32 reloc in an input
947216bf
AM		 1439 file, but the symbol was never referred to by a dynamic
1440 object, or if all references were garbage collected. In
0451c93c
MS		 1441 such a case, we don't actually need to build a procedure
1442 linkage table, and we can just do a PC32 reloc instead. */
a85d7ed0 1443 h->plt.offset = (bfd_vma) -1;
f5385ebf 1444 h->needs_plt = 0;
5236c819 1445 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1446 }
1447
b34976b6 1448 return TRUE;
a85d7ed0 1449 }
bbd7ec4a 1450 else
0451c93c
MS		 1451 /* It's possible that we incorrectly decided a .plt reloc was
1452 needed for an R_390_PC32 reloc to a non-function sym in
1453 check_relocs. We can't decide accurately between function and
1454 non-function syms in check-relocs; Objects loaded later in
1455 the link may change h->type. So fix it now. */
bbd7ec4a 1456 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1457
1458 /* If this is a weak symbol, and there is a real definition, the
1459 processor independent code will have arranged for us to see the
1460 real definition first, and we can just use the same value. */
60d67dc8 1461 if (h->is_weakalias)
a85d7ed0 1462 {
60d67dc8
AM		 1463 struct elf_link_hash_entry *def = weakdef (h);
1464 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1465 h->root.u.def.section = def->root.u.def.section;
1466 h->root.u.def.value = def->root.u.def.value;
64285810 1467 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
60d67dc8 1468 h->non_got_ref = def->non_got_ref;
b34976b6 1469 return TRUE;
a85d7ed0
NC		 1470 }
1471
1472 /* This is a reference to a symbol defined by a dynamic object which
1473 is not a function. */
1474
1475 /* If we are creating a shared library, we must presume that the
1476 only references to the symbol are via the global offset table.
1477 For such cases we need not do anything here; the relocations will
1478 be handled correctly by relocate_section. */
0e1862bb 1479 if (bfd_link_pic (info))
b34976b6 1480 return TRUE;
a85d7ed0
NC		 1481
1482 /* If there are no references to this symbol that do not use the
1483 GOT, we don't need to generate a copy reloc. */
f5385ebf 1484 if (!h->non_got_ref)
b34976b6 1485 return TRUE;
a85d7ed0 1486
0451c93c
MS		 1487 /* If -z nocopyreloc was given, we won't generate them either. */
1488 if (info->nocopyreloc)
1489 {
f5385ebf 1490 h->non_got_ref = 0;
b34976b6 1491 return TRUE;
0451c93c
MS		 1492 }
1493
3bf083ed
AM		 1494 /* If we don't find any dynamic relocs in read-only sections, then
1495 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1496 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
0451c93c 1497 {
3bf083ed
AM		 1498 h->non_got_ref = 0;
1499 return TRUE;
0451c93c
MS		 1500 }
1501
a85d7ed0
NC		 1502 /* We must allocate the symbol in our .dynbss section, which will
1503 become part of the .bss section of the executable. There will be
1504 an entry for this symbol in the .dynsym section. The dynamic
1505 object will contain position independent code, so all references
1506 from the dynamic object to this symbol will go through the global
1507 offset table. The dynamic linker will use the .dynsym entry to
1508 determine the address it must put in the global offset table, so
1509 both the dynamic object and the regular object will refer to the
1510 same memory location for the variable. */
1511
0451c93c 1512 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1513 if (htab == NULL)
1514 return FALSE;
a85d7ed0 1515
0451c93c
MS		 1516 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1517 copy the initial value out of the dynamic object and into the
1518 runtime process image. */
5474d94f
AM		 1519 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1520 {
1521 s = htab->elf.sdynrelro;
1522 srel = htab->elf.sreldynrelro;
1523 }
1524 else
1525 {
1526 s = htab->elf.sdynbss;
1527 srel = htab->elf.srelbss;
1528 }
1d7e9d18 1529 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1530 {
5474d94f 1531 srel->size += sizeof (Elf64_External_Rela);
f5385ebf 1532 h->needs_copy = 1;
a85d7ed0
NC		 1533 }
1534
6cabe1ea 1535 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a85d7ed0
NC		 1536}
1537
0451c93c
MS		 1538/* Allocate space in .plt, .got and associated reloc sections for
1539 dynamic relocs. */
1540
b34976b6 1541static bfd_boolean
4dfe6ac6
NC		 1542allocate_dynrelocs (struct elf_link_hash_entry *h,
1543 void * inf)
0451c93c
MS		 1544{
1545 struct bfd_link_info *info;
1546 struct elf_s390_link_hash_table *htab;
470b557a 1547 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1548 struct elf_dyn_relocs *p;
0451c93c 1549
e92d460e 1550 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1551 return TRUE;
0451c93c
MS		 1552
1553 info = (struct bfd_link_info *) inf;
1554 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1555 if (htab == NULL)
1556 return FALSE;
0451c93c 1557
470b557a
AK		 1558 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1559 here if it is defined and referenced in a non-shared object. */
1560 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
61643fba 1561 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
470b557a
AK		 1562 else if (htab->elf.dynamic_sections_created
1563 && h->plt.refcount > 0)
0451c93c
MS		 1564 {
1565 /* Make sure this symbol is output as a dynamic symbol.
1566 Undefined weak syms won't yet be marked as dynamic. */
1567 if (h->dynindx == -1
f5385ebf 1568 && !h->forced_local)
0451c93c 1569 {
c152c796 1570 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1571 return FALSE;
0451c93c
MS		 1572 }
1573
0e1862bb 1574 if (bfd_link_pic (info)
4ec72bde 1575 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1576 {
f41345a7 1577 asection *s = htab->elf.splt;
0451c93c
MS		 1578
1579 /* If this is the first .plt entry, make room for the special
1580 first entry. */
eea6121a
AM		 1581 if (s->size == 0)
1582 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1583
eea6121a 1584 h->plt.offset = s->size;
0451c93c
MS		 1585
1586 /* If this symbol is not defined in a regular file, and we are
1587 not generating a shared library, then set the symbol to this
1588 location in the .plt. This is required to make function
1589 pointers compare as equal between the normal executable and
1590 the shared library. */
0e1862bb 1591 if (! bfd_link_pic (info)
f5385ebf 1592 && !h->def_regular)
0451c93c
MS		 1593 {
1594 h->root.u.def.section = s;
1595 h->root.u.def.value = h->plt.offset;
1596 }
ec338859 1597
0451c93c 1598 /* Make room for this entry. */
eea6121a 1599 s->size += PLT_ENTRY_SIZE;
ec338859 1600
0451c93c
MS		 1601 /* We also need to make an entry in the .got.plt section, which
1602 will be placed in the .got section by the linker script. */
f41345a7 1603 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1604
1605 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1606 htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1607 }
1608 else
1609 {
1610 h->plt.offset = (bfd_vma) -1;
f5385ebf 1611 h->needs_plt = 0;
5236c819 1612 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1613 }
1614 }
1615 else
1616 {
1617 h->plt.offset = (bfd_vma) -1;
f5385ebf 1618 h->needs_plt = 0;
5236c819 1619 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1620 }
1621
69fc87f1
MS		 1622 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1623 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1624 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1625 we can save the dynamic TLS relocation. */
1626 if (h->got.refcount > 0
0e1862bb 1627 && !bfd_link_pic (info)
69fc87f1
MS		 1628 && h->dynindx == -1
1629 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1630 {
1631 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1632 /* For the GOTIE access without a literal pool entry the offset has
1633 to be stored somewhere. The immediate value in the instruction
1634 is not bit enough so the value is stored in the got. */
1635 {
f41345a7
AK		 1636 h->got.offset = htab->elf.sgot->size;
1637 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1638 }
1639 else
1640 h->got.offset = (bfd_vma) -1;
1641 }
1642 else if (h->got.refcount > 0)
0451c93c
MS		 1643 {
1644 asection *s;
b34976b6 1645 bfd_boolean dyn;
69fc87f1 1646 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1647
1648 /* Make sure this symbol is output as a dynamic symbol.
1649 Undefined weak syms won't yet be marked as dynamic. */
1650 if (h->dynindx == -1
f5385ebf 1651 && !h->forced_local)
0451c93c 1652 {
c152c796 1653 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1654 return FALSE;
0451c93c
MS		 1655 }
1656
f41345a7 1657 s = htab->elf.sgot;
eea6121a
AM		 1658 h->got.offset = s->size;
1659 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1660 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1661 if (tls_type == GOT_TLS_GD)
eea6121a 1662 s->size += GOT_ENTRY_SIZE;
0451c93c 1663 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1664 /* R_390_TLS_IE64 needs one dynamic relocation,
1665 R_390_TLS_GD64 needs one if local symbol and two if global. */
1666 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1667 || tls_type >= GOT_TLS_IE)
f41345a7 1668 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1 1669 else if (tls_type == GOT_TLS_GD)
f41345a7 1670 htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
10e7c045 1671 else if (!UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
0e1862bb 1672 && (bfd_link_pic (info)
82058a73 1673 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1674 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1675 }
1676 else
1677 h->got.offset = (bfd_vma) -1;
1678
0451c93c 1679 if (eh->dyn_relocs == NULL)
b34976b6 1680 return TRUE;
0451c93c
MS		 1681
1682 /* In the shared -Bsymbolic case, discard space allocated for
1683 dynamic pc-relative relocs against symbols which turn out to be
1684 defined in regular objects. For the normal shared case, discard
1685 space for pc-relative relocs that have become local due to symbol
1686 visibility changes. */
1687
0e1862bb 1688 if (bfd_link_pic (info))
0451c93c 1689 {
8c21ca21 1690 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1691 {
00d8c7a9 1692 struct elf_dyn_relocs **pp;
0451c93c
MS		 1693
1694 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1695 {
1696 p->count -= p->pc_count;
1697 p->pc_count = 0;
1698 if (p->count == 0)
1699 *pp = p->next;
1700 else
1701 pp = &p->next;
1702 }
1703 }
82058a73
MS		 1704
1705 /* Also discard relocs on undefined weak syms with non-default
1706 visibility. */
22d606e9 1707 if (eh->dyn_relocs != NULL
82058a73 1708 && h->root.type == bfd_link_hash_undefweak)
22d606e9 1709 {
b27bb18f
L		 1710 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1711 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
22d606e9
AM		 1712 eh->dyn_relocs = NULL;
1713
1714 /* Make sure undefined weak symbols are output as a dynamic
1715 symbol in PIEs. */
1716 else if (h->dynindx == -1
1717 && !h->forced_local)
1718 {
1719 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1720 return FALSE;
1721 }
1722 }
0451c93c 1723 }
64285810 1724 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1725 {
1726 /* For the non-shared case, discard space for relocs against
1727 symbols which turn out to need copy relocs or are not
1728 dynamic. */
1729
f5385ebf
AM		 1730 if (!h->non_got_ref
1731 && ((h->def_dynamic
1732 && !h->def_regular)
0451c93c
MS		 1733 || (htab->elf.dynamic_sections_created
1734 && (h->root.type == bfd_link_hash_undefweak
1735 || h->root.type == bfd_link_hash_undefined))))
1736 {
1737 /* Make sure this symbol is output as a dynamic symbol.
1738 Undefined weak syms won't yet be marked as dynamic. */
1739 if (h->dynindx == -1
f5385ebf 1740 && !h->forced_local)
0451c93c 1741 {
c152c796 1742 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1743 return FALSE;
0451c93c
MS		 1744 }
1745
1746 /* If that succeeded, we know we'll be keeping all the
1747 relocs. */
1748 if (h->dynindx != -1)
1749 goto keep;
1750 }
1751
1752 eh->dyn_relocs = NULL;
1753
ec338859 1754 keep: ;
0451c93c
MS		 1755 }
1756
1757 /* Finally, allocate space. */
1758 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1759 {
1760 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1761 sreloc->size += p->count * sizeof (Elf64_External_Rela);
0451c93c
MS		 1762 }
1763
b34976b6 1764 return TRUE;
0451c93c
MS		 1765}
1766
63c1f59d
AM		 1767/* Set DF_TEXTREL if we find any dynamic relocs that apply to
1768 read-only sections. */
0451c93c 1769
b34976b6 1770static bfd_boolean
63c1f59d 1771maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
0451c93c 1772{
63c1f59d 1773 asection *sec;
0451c93c 1774
63c1f59d
AM		 1775 if (h->root.type == bfd_link_hash_indirect)
1776 return TRUE;
0451c93c 1777
63c1f59d
AM		 1778 sec = readonly_dynrelocs (h);
1779 if (sec != NULL)
1780 {
1781 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
0451c93c 1782
63c1f59d
AM		 1783 info->flags |= DF_TEXTREL;
1784 info->callbacks->minfo
c1c8c1ef 1785 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
63c1f59d 1786 sec->owner, h->root.root.string, sec);
0451c93c 1787
63c1f59d
AM		 1788 /* Not an error, just cut short the traversal. */
1789 return FALSE;
0451c93c 1790 }
b34976b6 1791 return TRUE;
0451c93c
MS		 1792}
1793
a85d7ed0
NC		 1794/* Set the sizes of the dynamic sections. */
1795
b34976b6 1796static bfd_boolean
4dfe6ac6
NC		 1797elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1798 struct bfd_link_info *info)
a85d7ed0 1799{
0451c93c 1800 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1801 bfd *dynobj;
1802 asection *s;
b34976b6 1803 bfd_boolean relocs;
0451c93c 1804 bfd *ibfd;
a85d7ed0 1805
0451c93c 1806 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1807 if (htab == NULL)
1808 return FALSE;
1809
0451c93c
MS		 1810 dynobj = htab->elf.dynobj;
1811 if (dynobj == NULL)
1812 abort ();
a85d7ed0 1813
0451c93c 1814 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1815 {
1816 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 1817 if (bfd_link_executable (info) && !info->nointerp)
a85d7ed0 1818 {
3d4d4302 1819 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 1820 if (s == NULL)
1821 abort ();
eea6121a 1822 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 1823 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1824 }
1825 }
a85d7ed0 1826
0451c93c
MS		 1827 /* Set up .got offsets for local syms, and space for local dynamic
1828 relocs. */
c72f2fb2 1829 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a85d7ed0 1830 {
0451c93c
MS		 1831 bfd_signed_vma *local_got;
1832 bfd_signed_vma *end_local_got;
69fc87f1 1833 char *local_tls_type;
0451c93c
MS		 1834 bfd_size_type locsymcount;
1835 Elf_Internal_Shdr *symtab_hdr;
1836 asection *srela;
470b557a
AK		 1837 struct plt_entry *local_plt;
1838 unsigned int i;
a85d7ed0 1839
0ffa91dd 1840 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 1841 continue;
1842
0451c93c 1843 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 1844 {
00d8c7a9 1845 struct elf_dyn_relocs *p;
0451c93c 1846
6edfbbad 1847 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 1848 {
ec338859
AM		 1849 if (!bfd_is_abs_section (p->sec)
1850 && bfd_is_abs_section (p->sec->output_section))
1851 {
1852 /* Input section has been discarded, either because
1853 it is a copy of a linkonce section or due to
1854 linker script /DISCARD/, so we'll be discarding
1855 the relocs too. */
1856 }
248866a8 1857 else if (p->count != 0)
ec338859
AM		 1858 {
1859 srela = elf_section_data (p->sec)->sreloc;
eea6121a 1860 srela->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 1861 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1862 info->flags |= DF_TEXTREL;
ec338859 1863 }
a85d7ed0
NC		 1864 }
1865 }
0451c93c
MS		 1866
1867 local_got = elf_local_got_refcounts (ibfd);
1868 if (!local_got)
1869 continue;
1870
0ffa91dd 1871 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 1872 locsymcount = symtab_hdr->sh_info;
1873 end_local_got = local_got + locsymcount;
69fc87f1 1874 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 1875 s = htab->elf.sgot;
1876 srela = htab->elf.srelgot;
69fc87f1 1877 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 1878 {
0451c93c 1879 if (*local_got > 0)
a85d7ed0 1880 {
eea6121a
AM		 1881 *local_got = s->size;
1882 s->size += GOT_ENTRY_SIZE;
69fc87f1 1883 if (*local_tls_type == GOT_TLS_GD)
eea6121a 1884 s->size += GOT_ENTRY_SIZE;
0e1862bb 1885 if (bfd_link_pic (info))
eea6121a 1886 srela->size += sizeof (Elf64_External_Rela);
a85d7ed0
NC		 1887 }
1888 else
0451c93c 1889 *local_got = (bfd_vma) -1;
a85d7ed0 1890 }
470b557a
AK		 1891
1892 local_plt = elf_s390_local_plt (ibfd);
1893 for (i = 0; i < symtab_hdr->sh_info; i++)
1894 {
1895 if (local_plt[i].plt.refcount > 0)
1896 {
1897 local_plt[i].plt.offset = htab->elf.iplt->size;
1898 htab->elf.iplt->size += PLT_ENTRY_SIZE;
1899 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
1900 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
1901 }
1902 else
1903 local_plt[i].plt.offset = (bfd_vma) -1;
1904 }
0451c93c
MS		 1905 }
1906
69fc87f1
MS		 1907 if (htab->tls_ldm_got.refcount > 0)
1908 {
1909 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
1910 relocs. */
f41345a7
AK		 1911 htab->tls_ldm_got.offset = htab->elf.sgot->size;
1912 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
1913 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1
MS		 1914 }
1915 else
1916 htab->tls_ldm_got.offset = -1;
1917
0451c93c
MS		 1918 /* Allocate global sym .plt and .got entries, and space for global
1919 sym dynamic relocs. */
2c3fc389 1920 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 1921
1922 /* We now have determined the sizes of the various dynamic sections.
1923 Allocate memory for them. */
b34976b6 1924 relocs = FALSE;
0451c93c
MS		 1925 for (s = dynobj->sections; s != NULL; s = s->next)
1926 {
1927 if ((s->flags & SEC_LINKER_CREATED) == 0)
1928 continue;
1929
f41345a7
AK		 1930 if (s == htab->elf.splt
1931 || s == htab->elf.sgot
1932 || s == htab->elf.sgotplt
9d19e4fd 1933 || s == htab->elf.sdynbss
5474d94f 1934 || s == htab->elf.sdynrelro
470b557a
AK		 1935 || s == htab->elf.iplt
1936 || s == htab->elf.igotplt
1937 || s == htab->irelifunc)
0451c93c
MS		 1938 {
1939 /* Strip this section if we don't need it; see the
1940 comment below. */
1941 }
0112cd26 1942 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 1943 {
f41345a7 1944 if (s->size != 0 && s != htab->elf.srelplt)
b34976b6 1945 relocs = TRUE;
ec338859 1946
0451c93c
MS		 1947 /* We use the reloc_count field as a counter if we need
1948 to copy relocs into the output file. */
1949 s->reloc_count = 0;
1950 }
1951 else
a85d7ed0
NC		 1952 {
1953 /* It's not one of our sections, so don't allocate space. */
1954 continue;
1955 }
1956
eea6121a 1957 if (s->size == 0)
a85d7ed0 1958 {
0451c93c
MS		 1959 /* If we don't need this section, strip it from the
1960 output file. This is to handle .rela.bss and
1961 .rela.plt. We must create it in
1962 create_dynamic_sections, because it must be created
1963 before the linker maps input sections to output
1964 sections. The linker does that before
1965 adjust_dynamic_symbol is called, and it is that
1966 function which decides whether anything needs to go
1967 into these sections. */
1968
8423293d 1969 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 1970 continue;
1971 }
1972
c456f082
AM		 1973 if ((s->flags & SEC_HAS_CONTENTS) == 0)
1974 continue;
1975
0451c93c
MS		 1976 /* Allocate memory for the section contents. We use bfd_zalloc
1977 here in case unused entries are not reclaimed before the
1978 section's contents are written out. This should not happen,
1979 but this way if it does, we get a R_390_NONE reloc instead
1980 of garbage. */
eea6121a 1981 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 1982 if (s->contents == NULL)
b34976b6 1983 return FALSE;
a85d7ed0
NC		 1984 }
1985
0451c93c 1986 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1987 {
1988 /* Add some entries to the .dynamic section. We fill in the
1989 values later, in elf_s390_finish_dynamic_sections, but we
1990 must add the entries now so that we get the correct size for
1991 the .dynamic section. The DT_DEBUG entry is filled in by the
1992 dynamic linker and used by the debugger. */
dc810e39 1993#define add_dynamic_entry(TAG, VAL) \
5a580b3a 1994 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 1995
0e1862bb 1996 if (bfd_link_executable (info))
a85d7ed0 1997 {
dc810e39 1998 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 1999 return FALSE;
a85d7ed0
NC		 2000 }
2001
f41345a7 2002 if (htab->elf.splt->size != 0)
a85d7ed0 2003 {
dc810e39
AM		 2004 if (!add_dynamic_entry (DT_PLTGOT, 0)
2005 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2006 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2007 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2008 return FALSE;
a85d7ed0
NC		 2009 }
2010
2011 if (relocs)
947216bf
AM		 2012 {
2013 if (!add_dynamic_entry (DT_RELA, 0)
2014 || !add_dynamic_entry (DT_RELASZ, 0)
2015 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 2016 return FALSE;
ec338859 2017
0451c93c
MS		 2018 /* If any dynamic relocs apply to a read-only section,
2019 then we need a DT_TEXTREL entry. */
248866a8 2020 if ((info->flags & DF_TEXTREL) == 0)
63c1f59d 2021 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
ec338859 2022
0451c93c
MS		 2023 if ((info->flags & DF_TEXTREL) != 0)
2024 {
2025 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2026 return FALSE;
0451c93c 2027 }
a85d7ed0
NC		 2028 }
2029 }
dc810e39 2030#undef add_dynamic_entry
a85d7ed0 2031
b34976b6 2032 return TRUE;
a85d7ed0
NC		 2033}
2034
69fc87f1
MS		 2035/* Return the base VMA address which should be subtracted from real addresses
2036 when resolving @dtpoff relocation.
2037 This is PT_TLS segment p_vaddr. */
2038
2039static bfd_vma
2c3fc389 2040dtpoff_base (struct bfd_link_info *info)
69fc87f1 2041{
e1918d23
AM		 2042 /* If tls_sec is NULL, we should have signalled an error already. */
2043 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2044 return 0;
e1918d23 2045 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2046}
2047
2048/* Return the relocation value for @tpoff relocation
2049 if STT_TLS virtual address is ADDRESS. */
2050
2051static bfd_vma
2c3fc389 2052tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2053{
e1918d23 2054 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2055
e1918d23
AM		 2056 /* If tls_sec is NULL, we should have signalled an error already. */
2057 if (htab->tls_sec == NULL)
69fc87f1 2058 return 0;
e1918d23 2059 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2060}
2061
2062/* Complain if TLS instruction relocation is against an invalid
2063 instruction. */
2064
2065static void
2c3fc389
NC		 2066invalid_tls_insn (bfd *input_bfd,
2067 asection *input_section,
2068 Elf_Internal_Rela *rel)
69fc87f1
MS		 2069{
2070 reloc_howto_type *howto;
2071
2072 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
4eca0228 2073 _bfd_error_handler
695344c0 2074 /* xgettext:c-format */
871b3ab2 2075 (_("%pB(%pA+%#Lx): invalid instruction for TLS relocation %s"),
d003868e
AM		 2076 input_bfd,
2077 input_section,
d42c267e 2078 rel->r_offset,
69fc87f1 2079 howto->name);
77df2968 2080 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2081}
2082
a85d7ed0
NC		 2083/* Relocate a 390 ELF section. */
2084
b34976b6 2085static bfd_boolean
4dfe6ac6
NC		 2086elf_s390_relocate_section (bfd *output_bfd,
2087 struct bfd_link_info *info,
2088 bfd *input_bfd,
2089 asection *input_section,
2090 bfd_byte *contents,
2091 Elf_Internal_Rela *relocs,
2092 Elf_Internal_Sym *local_syms,
2093 asection **local_sections)
a85d7ed0 2094{
0451c93c 2095 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2096 Elf_Internal_Shdr *symtab_hdr;
2097 struct elf_link_hash_entry **sym_hashes;
2098 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2099 Elf_Internal_Rela *rel;
2100 Elf_Internal_Rela *relend;
2101
0ffa91dd
NC		 2102 BFD_ASSERT (is_s390_elf (input_bfd));
2103
0451c93c 2104 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 2105 if (htab == NULL)
2106 return FALSE;
2107
0ffa91dd 2108 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2109 sym_hashes = elf_sym_hashes (input_bfd);
2110 local_got_offsets = elf_local_got_offsets (input_bfd);
2111
a85d7ed0
NC		 2112 rel = relocs;
2113 relend = relocs + input_section->reloc_count;
2114 for (; rel < relend; rel++)
2115 {
5236c819 2116 unsigned int r_type;
a85d7ed0
NC		 2117 reloc_howto_type *howto;
2118 unsigned long r_symndx;
2119 struct elf_link_hash_entry *h;
2120 Elf_Internal_Sym *sym;
2121 asection *sec;
0451c93c 2122 bfd_vma off;
a85d7ed0 2123 bfd_vma relocation;
b34976b6 2124 bfd_boolean unresolved_reloc;
a85d7ed0 2125 bfd_reloc_status_type r;
69fc87f1 2126 int tls_type;
470b557a 2127 asection *base_got = htab->elf.sgot;
b27bb18f 2128 bfd_boolean resolved_to_zero;
a85d7ed0
NC		 2129
2130 r_type = ELF64_R_TYPE (rel->r_info);
0451c93c 2131 if (r_type == (int) R_390_GNU_VTINHERIT
947216bf
AM		 2132 || r_type == (int) R_390_GNU_VTENTRY)
2133 continue;
5236c819 2134 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2135 {
2136 bfd_set_error (bfd_error_bad_value);
b34976b6 2137 return FALSE;
a85d7ed0 2138 }
a85d7ed0 2139
b491616a 2140 howto = elf_howto_table + r_type;
a85d7ed0 2141 r_symndx = ELF64_R_SYM (rel->r_info);
5236c819 2142
a85d7ed0
NC		 2143 h = NULL;
2144 sym = NULL;
2145 sec = NULL;
b34976b6 2146 unresolved_reloc = FALSE;
a85d7ed0
NC		 2147 if (r_symndx < symtab_hdr->sh_info)
2148 {
2149 sym = local_syms + r_symndx;
2150 sec = local_sections[r_symndx];
470b557a
AK		 2151
2152 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2153 {
2154 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2155 if (local_plt == NULL)
2156 return FALSE;
2157
2158 /* Address of the PLT slot. */
2159 relocation = (htab->elf.iplt->output_section->vma
2160 + htab->elf.iplt->output_offset
2161 + local_plt[r_symndx].plt.offset);
2162
2163 switch (r_type)
2164 {
31db78f6
AK		 2165 case R_390_PLTOFF16:
2166 case R_390_PLTOFF32:
2167 case R_390_PLTOFF64:
2168 relocation -= htab->elf.sgot->output_section->vma;
2169 break;
470b557a
AK		 2170 case R_390_GOTPLT12:
2171 case R_390_GOTPLT16:
2172 case R_390_GOTPLT20:
2173 case R_390_GOTPLT32:
2174 case R_390_GOTPLT64:
2175 case R_390_GOTPLTENT:
2176 case R_390_GOT12:
2177 case R_390_GOT16:
2178 case R_390_GOT20:
2179 case R_390_GOT32:
2180 case R_390_GOT64:
2181 case R_390_GOTENT:
2182 {
2183 /* Write the PLT slot address into the GOT slot. */
2184 bfd_put_64 (output_bfd, relocation,
2185 htab->elf.sgot->contents +
2186 local_got_offsets[r_symndx]);
2187 relocation = (local_got_offsets[r_symndx] +
2188 htab->elf.sgot->output_offset);
2189
2190 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2191 relocation += htab->elf.sgot->output_section->vma;
2192 break;
2193 }
2194 default:
2195 break;
2196 }
2197 /* The output section is needed later in
2198 finish_dynamic_section when creating the dynamic
2199 relocation. */
2200 local_plt[r_symndx].sec = sec;
2201 goto do_relocation;
2202 }
2203 else
2204 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2205 }
2206 else
2207 {
560e09e9 2208 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2209 bfd_boolean ignored ATTRIBUTE_UNUSED;
0451c93c 2210
b2a8e766
AM		 2211 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2212 r_symndx, symtab_hdr, sym_hashes,
2213 h, sec, relocation,
62d887d4 2214 unresolved_reloc, warned, ignored);
a85d7ed0
NC		 2215 }
2216
dbaa2011 2217 if (sec != NULL && discarded_section (sec))
e4067dbb 2218 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2219 rel, 1, relend, howto, 0, contents);
ab96bf03 2220
0e1862bb 2221 if (bfd_link_relocatable (info))
ab96bf03
AM		 2222 continue;
2223
b27bb18f
L		 2224 resolved_to_zero = (h != NULL
2225 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
2226
a85d7ed0
NC		 2227 switch (r_type)
2228 {
5236c819
MS		 2229 case R_390_GOTPLT12:
2230 case R_390_GOTPLT16:
bd1ea41b 2231 case R_390_GOTPLT20:
5236c819
MS		 2232 case R_390_GOTPLT32:
2233 case R_390_GOTPLT64:
2234 case R_390_GOTPLTENT:
2235 /* There are three cases for a GOTPLT relocation. 1) The
2236 relocation is against the jump slot entry of a plt that
2237 will get emitted to the output file. 2) The relocation
2238 is against the jump slot of a plt entry that has been
2239 removed. elf_s390_adjust_gotplt has created a GOT entry
2240 as replacement. 3) The relocation is against a local symbol.
2241 Cases 2) and 3) are the same as the GOT relocation code
2242 so we just have to test for case 1 and fall through for
2243 the other two. */
2244 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2245 {
2246 bfd_vma plt_index;
2247
470b557a
AK		 2248 if (s390_is_ifunc_symbol_p (h))
2249 {
2250 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2251 relocation = (plt_index * GOT_ENTRY_SIZE +
2252 htab->elf.igotplt->output_offset);
2253 if (r_type == R_390_GOTPLTENT)
2254 relocation += htab->elf.igotplt->output_section->vma;
2255 }
2256 else
2257 {
2258 /* Calc. index no.
2259 Current offset - size first entry / entry size. */
2260 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2261 PLT_ENTRY_SIZE;
2262
2263 /* Offset in GOT is PLT index plus GOT headers(3)
3b67f094 2264 times 8, addr & GOT addr. */
470b557a
AK		 2265 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2266 if (r_type == R_390_GOTPLTENT)
2267 relocation += htab->elf.sgot->output_section->vma;
2268 }
5236c819 2269 unresolved_reloc = FALSE;
5236c819
MS		 2270 break;
2271 }
2272 /* Fall through. */
2273
947216bf
AM		 2274 case R_390_GOT12:
2275 case R_390_GOT16:
bd1ea41b 2276 case R_390_GOT20:
947216bf
AM		 2277 case R_390_GOT32:
2278 case R_390_GOT64:
2279 case R_390_GOTENT:
2280 /* Relocation is to the entry for this symbol in the global
2281 offset table. */
470b557a 2282 if (base_got == NULL)
0451c93c 2283 abort ();
a85d7ed0 2284
947216bf
AM		 2285 if (h != NULL)
2286 {
b34976b6 2287 bfd_boolean dyn;
a85d7ed0 2288
947216bf 2289 off = h->got.offset;
0451c93c 2290 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2291
2292 if (s390_is_ifunc_symbol_p (h))
2293 {
2294 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2295 if (off == (bfd_vma)-1)
2296 {
2297 /* No explicit GOT usage so redirect to the
2298 got.iplt slot. */
2299 base_got = htab->elf.igotplt;
2300 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2301 }
2302 else
2303 {
2304 /* Explicit GOT slots must contain the address
2305 of the PLT slot. This will be handled in
2306 finish_dynamic_symbol. */
2307 }
2308 }
0e1862bb
L		 2309 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2310 bfd_link_pic (info),
2311 h)
2312 || (bfd_link_pic (info)
470b557a 2313 && SYMBOL_REFERENCES_LOCAL (info, h))
10e7c045 2314 || resolved_to_zero)
947216bf
AM		 2315 {
2316 /* This is actually a static link, or it is a
2317 -Bsymbolic link and the symbol is defined
2318 locally, or the symbol was forced to be local
2319 because of a version file. We must initialize
2320 this entry in the global offset table. Since the
2321 offset must always be a multiple of 2, we use the
2322 least significant bit to record whether we have
2323 initialized it already.
2324
2325 When doing a dynamic link, we create a .rel.got
2326 relocation entry to initialize the value. This
2327 is done in the finish_dynamic_symbol routine. */
2328 if ((off & 1) != 0)
2329 off &= ~1;
2330 else
2331 {
a85d7ed0 2332 bfd_put_64 (output_bfd, relocation,
470b557a 2333 base_got->contents + off);
947216bf
AM		 2334 h->got.offset |= 1;
2335 }
a63cc5f7
AK		 2336
2337 if ((h->def_regular
0e1862bb 2338 && bfd_link_pic (info)
a63cc5f7
AK		 2339 && SYMBOL_REFERENCES_LOCAL (info, h))
2340 /* lgrl rx,sym@GOTENT -> larl rx, sym */
2341 && ((r_type == R_390_GOTENT
2342 && (bfd_get_16 (input_bfd,
2343 contents + rel->r_offset - 2)
2344 & 0xff0f) == 0xc408)
2345 /* lg rx, sym@GOT(r12) -> larl rx, sym */
2346 || (r_type == R_390_GOT20
2347 && (bfd_get_32 (input_bfd,
2348 contents + rel->r_offset - 2)
2349 & 0xff00f000) == 0xe300c000
2350 && bfd_get_8 (input_bfd,
2351 contents + rel->r_offset + 3) == 0x04)))
2352
2353 {
2354 unsigned short new_insn =
2355 (0xc000 | (bfd_get_8 (input_bfd,
2356 contents + rel->r_offset - 1) & 0xf0));
2357 bfd_put_16 (output_bfd, new_insn,
2358 contents + rel->r_offset - 2);
2359 r_type = R_390_PC32DBL;
2360 rel->r_addend = 2;
2361 howto = elf_howto_table + r_type;
2362 relocation = h->root.u.def.value
2363 + h->root.u.def.section->output_section->vma
2364 + h->root.u.def.section->output_offset;
2365 goto do_relocation;
2366 }
947216bf 2367 }
0451c93c 2368 else
b34976b6 2369 unresolved_reloc = FALSE;
947216bf
AM		 2370 }
2371 else
2372 {
0451c93c
MS		 2373 if (local_got_offsets == NULL)
2374 abort ();
a85d7ed0 2375
947216bf 2376 off = local_got_offsets[r_symndx];
a85d7ed0 2377
947216bf
AM		 2378 /* The offset must always be a multiple of 8. We use
2379 the least significant bit to record whether we have
2380 already generated the necessary reloc. */
2381 if ((off & 1) != 0)
2382 off &= ~1;
2383 else
2384 {
2385 bfd_put_64 (output_bfd, relocation,
f41345a7 2386 htab->elf.sgot->contents + off);
a85d7ed0 2387
0e1862bb 2388 if (bfd_link_pic (info))
947216bf
AM		 2389 {
2390 asection *s;
2391 Elf_Internal_Rela outrel;
2392 bfd_byte *loc;
a85d7ed0 2393
f41345a7 2394 s = htab->elf.srelgot;
947216bf 2395 if (s == NULL)
0451c93c 2396 abort ();
a85d7ed0 2397
f41345a7
AK		 2398 outrel.r_offset = (htab->elf.sgot->output_section->vma
2399 + htab->elf.sgot->output_offset
947216bf
AM		 2400 + off);
2401 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2402 outrel.r_addend = relocation;
947216bf
AM		 2403 loc = s->contents;
2404 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2405 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2406 }
a85d7ed0 2407
947216bf
AM		 2408 local_got_offsets[r_symndx] |= 1;
2409 }
2410 }
a85d7ed0 2411
0451c93c
MS		 2412 if (off >= (bfd_vma) -2)
2413 abort ();
2414
470b557a 2415 relocation = base_got->output_offset + off;
0451c93c 2416
ae9a127f
NC		 2417 /* For @GOTENT the relocation is against the offset between
2418 the instruction and the symbols entry in the GOT and not
2419 between the start of the GOT and the symbols entry. We
2420 add the vma of the GOT to get the correct value. */
5236c819
MS		 2421 if ( r_type == R_390_GOTENT
2422 || r_type == R_390_GOTPLTENT)
470b557a 2423 relocation += base_got->output_section->vma;
a85d7ed0 2424
947216bf 2425 break;
99c79b2e 2426
5236c819
MS		 2427 case R_390_GOTOFF16:
2428 case R_390_GOTOFF32:
2429 case R_390_GOTOFF64:
947216bf
AM		 2430 /* Relocation is relative to the start of the global offset
2431 table. */
a85d7ed0 2432
d47b13e0
AK		 2433 if (h != NULL
2434 && s390_is_ifunc_symbol_p (h)
2435 && h->def_regular
2436 && !bfd_link_executable (info))
2437 {
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 goto do_relocation;
2443 }
2444
947216bf
AM		 2445 /* Note that sgot->output_offset is not involved in this
2446 calculation. We always want the start of .got. If we
2447 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2448 permitted by the ABI, we might have to change this
2449 calculation. */
f41345a7 2450 relocation -= htab->elf.sgot->output_section->vma;
947216bf 2451 break;
a85d7ed0 2452
947216bf 2453 case R_390_GOTPC:
a85d7ed0 2454 case R_390_GOTPCDBL:
947216bf 2455 /* Use global offset table as symbol value. */
f41345a7 2456 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2457 unresolved_reloc = FALSE;
947216bf 2458 break;
a85d7ed0 2459
fb798c50 2460 case R_390_PLT12DBL:
947216bf 2461 case R_390_PLT16DBL:
fb798c50 2462 case R_390_PLT24DBL:
947216bf
AM		 2463 case R_390_PLT32:
2464 case R_390_PLT32DBL:
2465 case R_390_PLT64:
2466 /* Relocation is to the entry for this symbol in the
2467 procedure linkage table. */
a85d7ed0 2468
947216bf
AM		 2469 /* Resolve a PLT32 reloc against a local symbol directly,
2470 without using the procedure linkage table. */
2471 if (h == NULL)
2472 break;
a85d7ed0 2473
947216bf 2474 if (h->plt.offset == (bfd_vma) -1
31db78f6 2475 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
947216bf
AM		 2476 {
2477 /* We didn't make a PLT entry for this symbol. This
2478 happens when statically linking PIC code, or when
2479 using -Bsymbolic. */
2480 break;
2481 }
470b557a
AK		 2482 if (s390_is_ifunc_symbol_p (h))
2483 relocation = (htab->elf.iplt->output_section->vma
2484 + htab->elf.iplt->output_offset
2485 + h->plt.offset);
2486 else
2487 relocation = (htab->elf.splt->output_section->vma
2488 + htab->elf.splt->output_offset
2489 + h->plt.offset);
b34976b6 2490 unresolved_reloc = FALSE;
26e41594 2491 break;
5236c819
MS		 2492
2493 case R_390_PLTOFF16:
2494 case R_390_PLTOFF32:
2495 case R_390_PLTOFF64:
26e41594
AM		 2496 /* Relocation is to the entry for this symbol in the
2497 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2498
2499 /* For local symbols or if we didn't make a PLT entry for
2500 this symbol resolve the symbol directly. */
31db78f6 2501 if (h == NULL
5236c819 2502 || h->plt.offset == (bfd_vma) -1
31db78f6 2503 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2504 {
f41345a7 2505 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS		 2506 break;
2507 }
2508
470b557a
AK		 2509 if (s390_is_ifunc_symbol_p (h))
2510 relocation = (htab->elf.iplt->output_section->vma
2511 + htab->elf.iplt->output_offset
2512 + h->plt.offset
2513 - htab->elf.sgot->output_section->vma);
2514 else
2515 relocation = (htab->elf.splt->output_section->vma
2516 + htab->elf.splt->output_offset
2517 + h->plt.offset
2518 - htab->elf.sgot->output_section->vma);
5236c819 2519 unresolved_reloc = FALSE;
947216bf
AM		 2520 break;
2521
947216bf 2522 case R_390_PC16:
fb798c50 2523 case R_390_PC12DBL:
947216bf 2524 case R_390_PC16DBL:
fb798c50 2525 case R_390_PC24DBL:
947216bf 2526 case R_390_PC32:
a85d7ed0 2527 case R_390_PC32DBL:
947216bf 2528 case R_390_PC64:
431e5de3
AK		 2529 if (h != NULL
2530 && bfd_link_pie (info)
2531 && !h->def_regular)
2532 {
871b3ab2 2533 _bfd_error_handler (_("%pB: `%s' non-PLT reloc for symbol defined "
431e5de3
AK		 2534 "in shared library and accessed "
2535 "from executable "
2536 "(rebuild file with -fPIC ?)"),
2537 input_bfd, h->root.root.string);
2538 bfd_set_error (bfd_error_bad_value);
2539 return FALSE;
2540 }
99ba5125
AK		 2541 /* The target of these relocs are instruction operands
2542 residing in read-only sections. We cannot emit a runtime
2543 reloc for it. */
2544 if (h != NULL
2545 && s390_is_ifunc_symbol_p (h)
2546 && h->def_regular
2547 && bfd_link_pic (info))
2548 {
2549 relocation = (htab->elf.iplt->output_section->vma
2550 + htab->elf.iplt->output_offset
2551 + h->plt.offset);
2552 goto do_relocation;
2553 }
1a0670f3 2554 /* Fall through. */
99ba5125
AK		 2555
2556 case R_390_8:
2557 case R_390_16:
2558 case R_390_32:
2559 case R_390_64:
470b557a
AK		 2560
2561 if (h != NULL
2562 && s390_is_ifunc_symbol_p (h)
2563 && h->def_regular)
2564 {
d7ab4911 2565 if (!bfd_link_pic (info))
470b557a 2566 {
d7ab4911
AK		 2567 /* For a non-shared object the symbol will not
2568 change. Hence we can write the address of the
2569 target IPLT slot now. */
470b557a
AK		 2570 relocation = (htab->elf.iplt->output_section->vma
2571 + htab->elf.iplt->output_offset
2572 + h ->plt.offset);
2573 goto do_relocation;
2574 }
2575 else
2576 {
2577 /* For shared objects a runtime relocation is needed. */
2578
2579 Elf_Internal_Rela outrel;
2580 asection *sreloc;
2581
2582 /* Need a dynamic relocation to get the real function
2583 address. */
2584 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2585 info,
2586 input_section,
2587 rel->r_offset);
2588 if (outrel.r_offset == (bfd_vma) -1
2589 || outrel.r_offset == (bfd_vma) -2)
2590 abort ();
2591
2592 outrel.r_offset += (input_section->output_section->vma
2593 + input_section->output_offset);
2594
2595 if (h->dynindx == -1
2596 || h->forced_local
0e1862bb 2597 || bfd_link_executable (info))
470b557a
AK		 2598 {
2599 /* This symbol is resolved locally. */
2600 outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
2601 outrel.r_addend = (h->root.u.def.value
2602 + h->root.u.def.section->output_section->vma
2603 + h->root.u.def.section->output_offset);
2604 }
2605 else
2606 {
2607 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2608 outrel.r_addend = 0;
2609 }
2610
2611 sreloc = htab->elf.irelifunc;
2612 elf_append_rela (output_bfd, sreloc, &outrel);
2613
2614 /* If this reloc is against an external symbol, we
2615 do not want to fiddle with the addend. Otherwise,
2616 we need to include the symbol value so that it
2617 becomes an addend for the dynamic reloc. For an
2618 internal symbol, we have updated addend. */
2619 continue;
2620 }
2621 }
2622
b1e24c02 2623 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2624 break;
2625
0e1862bb 2626 if ((bfd_link_pic (info)
82058a73 2627 && (h == NULL
b27bb18f
L		 2628 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2629 && !resolved_to_zero)
82058a73 2630 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2631 && ((r_type != R_390_PC16
fb798c50 2632 && r_type != R_390_PC12DBL
0451c93c 2633 && r_type != R_390_PC16DBL
fb798c50 2634 && r_type != R_390_PC24DBL
0451c93c
MS		 2635 && r_type != R_390_PC32
2636 && r_type != R_390_PC32DBL
2637 && r_type != R_390_PC64)
8c21ca21 2638 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810 2639 || (ELIMINATE_COPY_RELOCS
0e1862bb 2640 && !bfd_link_pic (info)
0451c93c
MS		 2641 && h != NULL
2642 && h->dynindx != -1
f5385ebf
AM		 2643 && !h->non_got_ref
2644 && ((h->def_dynamic
2645 && !h->def_regular)
0451c93c
MS		 2646 || h->root.type == bfd_link_hash_undefweak
2647 || h->root.type == bfd_link_hash_undefined)))
947216bf
AM		 2648 {
2649 Elf_Internal_Rela outrel;
b34976b6 2650 bfd_boolean skip, relocate;
0451c93c 2651 asection *sreloc;
947216bf 2652 bfd_byte *loc;
a85d7ed0 2653
947216bf
AM		 2654 /* When generating a shared object, these relocations
2655 are copied into the output file to be resolved at run
2656 time. */
b34976b6
AM		 2657 skip = FALSE;
2658 relocate = FALSE;
a85d7ed0 2659
c629eae0
JJ		 2660 outrel.r_offset =
2661 _bfd_elf_section_offset (output_bfd, info, input_section,
2662 rel->r_offset);
2663 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2664 skip = TRUE;
0bb2d96a 2665 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2666 skip = TRUE, relocate = TRUE;
a85d7ed0 2667
947216bf
AM		 2668 outrel.r_offset += (input_section->output_section->vma
2669 + input_section->output_offset);
a85d7ed0 2670
947216bf 2671 if (skip)
0bb2d96a 2672 memset (&outrel, 0, sizeof outrel);
947216bf 2673 else if (h != NULL
0451c93c
MS		 2674 && h->dynindx != -1
2675 && (r_type == R_390_PC16
fb798c50 2676 || r_type == R_390_PC12DBL
0451c93c 2677 || r_type == R_390_PC16DBL
fb798c50 2678 || r_type == R_390_PC24DBL
0451c93c
MS		 2679 || r_type == R_390_PC32
2680 || r_type == R_390_PC32DBL
2681 || r_type == R_390_PC64
0e1862bb 2682 || !bfd_link_pic (info)
8c21ca21 2683 || !SYMBOLIC_BIND (info, h)
f5385ebf 2684 || !h->def_regular))
947216bf
AM		 2685 {
2686 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
27018c3f 2687 outrel.r_addend = rel->r_addend;
947216bf
AM		 2688 }
2689 else
2690 {
0451c93c 2691 /* This symbol is local, or marked to become local. */
90ced0dd 2692 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2693 if (r_type == R_390_64)
2694 {
2695 relocate = TRUE;
2696 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2697 }
2698 else
2699 {
2700 long sindx;
2701
90ced0dd 2702 if (bfd_is_abs_section (sec))
b5727d75
MS		 2703 sindx = 0;
2704 else if (sec == NULL || sec->owner == NULL)
2705 {
2706 bfd_set_error(bfd_error_bad_value);
2707 return FALSE;
2708 }
2709 else
2710 {
2711 asection *osec;
2712
2713 osec = sec->output_section;
2714 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2715
2716 if (sindx == 0)
2717 {
2718 osec = htab->elf.text_index_section;
2719 sindx = elf_section_data (osec)->dynindx;
2720 }
2721 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2722
2723 /* We are turning this relocation into one
2724 against a section symbol, so subtract out
2725 the output section's address but not the
2726 offset of the input section in the output
2727 section. */
90ced0dd 2728 outrel.r_addend -= osec->vma;
b5727d75
MS		 2729 }
2730 outrel.r_info = ELF64_R_INFO (sindx, r_type);
b5727d75 2731 }
0451c93c 2732 }
a85d7ed0 2733
0451c93c
MS		 2734 sreloc = elf_section_data (input_section)->sreloc;
2735 if (sreloc == NULL)
2736 abort ();
2737
947216bf
AM		 2738 loc = sreloc->contents;
2739 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2740 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
a85d7ed0 2741
947216bf
AM		 2742 /* If this reloc is against an external symbol, we do
2743 not want to fiddle with the addend. Otherwise, we
2744 need to include the symbol value so that it becomes
2745 an addend for the dynamic reloc. */
2746 if (! relocate)
2747 continue;
2748 }
a85d7ed0 2749
947216bf 2750 break;
a85d7ed0 2751
69fc87f1
MS		 2752 /* Relocations for tls literal pool entries. */
2753 case R_390_TLS_IE64:
0e1862bb 2754 if (bfd_link_pic (info))
69fc87f1
MS		 2755 {
2756 Elf_Internal_Rela outrel;
2757 asection *sreloc;
2758 bfd_byte *loc;
2759
2760 outrel.r_offset = rel->r_offset
2761 + input_section->output_section->vma
2762 + input_section->output_offset;
2763 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2764 sreloc = elf_section_data (input_section)->sreloc;
2765 if (sreloc == NULL)
2766 abort ();
2767 loc = sreloc->contents;
2768 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2769 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2770 }
ae9a127f 2771 /* Fall through. */
69fc87f1
MS		 2772
2773 case R_390_TLS_GD64:
2774 case R_390_TLS_GOTIE64:
2775 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2776 tls_type = GOT_UNKNOWN;
2777 if (h == NULL && local_got_offsets)
2778 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2779 else if (h != NULL)
2780 {
2781 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 2782 if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
69fc87f1
MS		 2783 r_type = R_390_TLS_LE64;
2784 }
2785 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2786 r_type = R_390_TLS_IE64;
2787
2788 if (r_type == R_390_TLS_LE64)
2789 {
2790 /* This relocation gets optimized away by the local exec
2791 access optimization. */
2792 BFD_ASSERT (! unresolved_reloc);
2793 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2794 contents + rel->r_offset);
2795 continue;
2796 }
2797
f41345a7 2798 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2799 abort ();
2800
2801 if (h != NULL)
2802 off = h->got.offset;
2803 else
2804 {
2805 if (local_got_offsets == NULL)
2806 abort ();
2807
2808 off = local_got_offsets[r_symndx];
2809 }
2810
2811 emit_tls_relocs:
2812
2813 if ((off & 1) != 0)
2814 off &= ~1;
26e41594 2815 else
69fc87f1
MS		 2816 {
2817 Elf_Internal_Rela outrel;
2818 bfd_byte *loc;
2819 int dr_type, indx;
2820
f41345a7 2821 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2822 abort ();
2823
f41345a7
AK		 2824 outrel.r_offset = (htab->elf.sgot->output_section->vma
2825 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2826
2827 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2828 if (r_type == R_390_TLS_GD64)
2829 dr_type = R_390_TLS_DTPMOD;
2830 else
2831 dr_type = R_390_TLS_TPOFF;
2832 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2833 outrel.r_addend = relocation - dtpoff_base (info);
2834 else
2835 outrel.r_addend = 0;
2836 outrel.r_info = ELF64_R_INFO (indx, dr_type);
f41345a7
AK		 2837 loc = htab->elf.srelgot->contents;
2838 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2839 * sizeof (Elf64_External_Rela);
2840 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2841
2842 if (r_type == R_390_TLS_GD64)
2843 {
2844 if (indx == 0)
2845 {
07d6d2b8 2846 BFD_ASSERT (! unresolved_reloc);
69fc87f1
MS		 2847 bfd_put_64 (output_bfd,
2848 relocation - dtpoff_base (info),
f41345a7 2849 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2850 }
2851 else
2852 {
2853 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
2854 outrel.r_offset += GOT_ENTRY_SIZE;
2855 outrel.r_addend = 0;
f41345a7 2856 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 2857 loc += sizeof (Elf64_External_Rela);
2858 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2859 }
2860 }
2861
2862 if (h != NULL)
2863 h->got.offset |= 1;
2864 else
2865 local_got_offsets[r_symndx] |= 1;
2866 }
2867
2868 if (off >= (bfd_vma) -2)
2869 abort ();
2870 if (r_type == ELF64_R_TYPE (rel->r_info))
2871 {
f41345a7 2872 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2873 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
f41345a7 2874 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2875 unresolved_reloc = FALSE;
2876 }
2877 else
2878 {
f41345a7 2879 bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 2880 contents + rel->r_offset);
2881 continue;
2882 }
2883 break;
2884
2885 case R_390_TLS_GOTIE12:
bd1ea41b 2886 case R_390_TLS_GOTIE20:
69fc87f1
MS		 2887 case R_390_TLS_IEENT:
2888 if (h == NULL)
2889 {
2890 if (local_got_offsets == NULL)
2891 abort();
2892 off = local_got_offsets[r_symndx];
0e1862bb 2893 if (bfd_link_pic (info))
69fc87f1
MS		 2894 goto emit_tls_relocs;
2895 }
2896 else
2897 {
2898 off = h->got.offset;
2899 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 2900 if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE)
69fc87f1
MS		 2901 goto emit_tls_relocs;
2902 }
2903
f41345a7 2904 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2905 abort ();
2906
2907 BFD_ASSERT (! unresolved_reloc);
2908 bfd_put_64 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 2909 htab->elf.sgot->contents + off);
2910 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2911 if (r_type == R_390_TLS_IEENT)
f41345a7 2912 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2913 unresolved_reloc = FALSE;
2914 break;
2915
2916 case R_390_TLS_LDM64:
0e1862bb 2917 if (! bfd_link_pic (info))
69fc87f1
MS		 2918 /* The literal pool entry this relocation refers to gets ignored
2919 by the optimized code of the local exec model. Do nothing
2920 and the value will turn out zero. */
2921 continue;
2922
f41345a7 2923 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2924 abort ();
2925
2926 off = htab->tls_ldm_got.offset;
2927 if (off & 1)
2928 off &= ~1;
2929 else
2930 {
2931 Elf_Internal_Rela outrel;
2932 bfd_byte *loc;
2933
f41345a7 2934 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2935 abort ();
2936
f41345a7
AK		 2937 outrel.r_offset = (htab->elf.sgot->output_section->vma
2938 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2939
2940 bfd_put_64 (output_bfd, 0,
f41345a7 2941 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2942 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
2943 outrel.r_addend = 0;
f41345a7
AK		 2944 loc = htab->elf.srelgot->contents;
2945 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2946 * sizeof (Elf64_External_Rela);
2947 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2948 htab->tls_ldm_got.offset |= 1;
2949 }
f41345a7 2950 relocation = htab->elf.sgot->output_offset + off;
26e41594 2951 unresolved_reloc = FALSE;
69fc87f1
MS		 2952 break;
2953
2954 case R_390_TLS_LE64:
3cbc1e5e 2955 if (bfd_link_dll (info))
69fc87f1
MS		 2956 {
2957 /* Linking a shared library with non-fpic code requires
2958 a R_390_TLS_TPOFF relocation. */
2959 Elf_Internal_Rela outrel;
2960 asection *sreloc;
2961 bfd_byte *loc;
2962 int indx;
2963
2964 outrel.r_offset = rel->r_offset
2965 + input_section->output_section->vma
2966 + input_section->output_offset;
2967 if (h != NULL && h->dynindx != -1)
2968 indx = h->dynindx;
2969 else
2970 indx = 0;
2971 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
2972 if (indx == 0)
2973 outrel.r_addend = relocation - dtpoff_base (info);
2974 else
2975 outrel.r_addend = 0;
2976 sreloc = elf_section_data (input_section)->sreloc;
2977 if (sreloc == NULL)
2978 abort ();
2979 loc = sreloc->contents;
2980 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2981 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2982 }
2983 else
2984 {
2985 BFD_ASSERT (! unresolved_reloc);
2986 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2987 contents + rel->r_offset);
2988 }
2989 continue;
2990
2991 case R_390_TLS_LDO64:
0e1862bb 2992 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 2993 relocation -= dtpoff_base (info);
2994 else
2995 /* When converting LDO to LE, we must negate. */
2996 relocation = -tpoff (info, relocation);
2997 break;
2998
2999 /* Relocations for tls instructions. */
3000 case R_390_TLS_LOAD:
3001 case R_390_TLS_GDCALL:
3002 case R_390_TLS_LDCALL:
3003 tls_type = GOT_UNKNOWN;
3004 if (h == NULL && local_got_offsets)
3005 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3006 else if (h != NULL)
3007 tls_type = elf_s390_hash_entry(h)->tls_type;
3008
3009 if (tls_type == GOT_TLS_GD)
3010 continue;
3011
3012 if (r_type == R_390_TLS_LOAD)
3013 {
0e1862bb 3014 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3015 {
3016 /* IE->LE transition. Four valid cases:
3017 lg %rx,(0,%ry) -> sllg %rx,%ry,0
3018 lg %rx,(%ry,0) -> sllg %rx,%ry,0
3019 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
3020 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
3021 unsigned int insn0, insn1, ry;
3022
3023 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3024 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3025 if (insn1 != 0x0004)
3704e358
AK		 3026 {
3027 invalid_tls_insn (input_bfd, input_section, rel);
3028 return FALSE;
3029 }
69fc87f1
MS		 3030 if ((insn0 & 0xff00f000) == 0xe3000000)
3031 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
3032 ry = (insn0 & 0x000f0000);
3033 else if ((insn0 & 0xff0f0000) == 0xe3000000)
3034 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
3035 ry = (insn0 & 0x0000f000) << 4;
3036 else if ((insn0 & 0xff00f000) == 0xe300c000)
3037 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
3038 ry = (insn0 & 0x000f0000);
3039 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
3040 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
3041 ry = (insn0 & 0x0000f000) << 4;
3042 else
3704e358
AK		 3043 {
3044 invalid_tls_insn (input_bfd, input_section, rel);
3045 return FALSE;
3046 }
69fc87f1
MS		 3047 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
3048 insn1 = 0x000d;
3049 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3050 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3051 }
3052 }
3053 else if (r_type == R_390_TLS_GDCALL)
3054 {
3055 unsigned int insn0, insn1;
3056
3057 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3058 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3059 if ((insn0 & 0xffff0000) != 0xc0e50000)
3704e358
AK		 3060 {
3061 invalid_tls_insn (input_bfd, input_section, rel);
3062 return FALSE;
3063 }
0e1862bb 3064 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3065 {
3066 /* GD->LE transition.
3067 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3068 insn0 = 0xc0040000;
3069 insn1 = 0x0000;
3070 }
3071 else
3072 {
3073 /* GD->IE transition.
3074 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
3075 insn0 = 0xe322c000;
3076 insn1 = 0x0004;
3077 }
3078 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3079 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3080 }
3081 else if (r_type == R_390_TLS_LDCALL)
3082 {
0e1862bb 3083 if (!bfd_link_pic (info))
69fc87f1
MS		 3084 {
3085 unsigned int insn0, insn1;
3086
3087 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3088 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3089 if ((insn0 & 0xffff0000) != 0xc0e50000)
3704e358
AK		 3090 {
3091 invalid_tls_insn (input_bfd, input_section, rel);
3092 return FALSE;
3093 }
69fc87f1
MS		 3094 /* LD->LE transition.
3095 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3096 insn0 = 0xc0040000;
3097 insn1 = 0x0000;
3098 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3099 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3100 }
3101 }
3102 continue;
3103
947216bf
AM		 3104 default:
3105 break;
3106 }
a85d7ed0 3107
239e1f3a
AM		 3108 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3109 because such sections are not SEC_ALLOC and thus ld.so will
3110 not process them. */
0451c93c 3111 if (unresolved_reloc
239e1f3a 3112 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3113 && h->def_dynamic)
3114 && _bfd_elf_section_offset (output_bfd, info, input_section,
3115 rel->r_offset) != (bfd_vma) -1)
4eca0228 3116 _bfd_error_handler
695344c0 3117 /* xgettext:c-format */
871b3ab2 3118 (_("%pB(%pA+%#Lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3119 input_bfd,
3120 input_section,
d42c267e 3121 rel->r_offset,
843fe662 3122 howto->name,
0451c93c
MS		 3123 h->root.root.string);
3124
470b557a
AK		 3125 do_relocation:
3126
fb798c50
AK		 3127 /* When applying a 24 bit reloc we need to start one byte
3128 earlier. Otherwise the 32 bit get/put bfd operations might
3129 access a byte after the actual section. */
3130 if (r_type == R_390_PC24DBL
3131 || r_type == R_390_PLT24DBL)
3132 rel->r_offset--;
3133
bd1ea41b
MS		 3134 if (r_type == R_390_20
3135 || r_type == R_390_GOT20
3136 || r_type == R_390_GOTPLT20
3137 || r_type == R_390_TLS_GOTIE20)
3138 {
3139 relocation += rel->r_addend;
3140 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3141 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3142 contents, rel->r_offset,
3143 relocation, 0);
3144 }
3145 else
3146 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
a85d7ed0
NC		 3147 contents, rel->r_offset,
3148 relocation, rel->r_addend);
3149
3150 if (r != bfd_reloc_ok)
3151 {
0451c93c 3152 const char *name;
ec338859 3153
0451c93c
MS		 3154 if (h != NULL)
3155 name = h->root.root.string;
3156 else
a85d7ed0 3157 {
0451c93c
MS		 3158 name = bfd_elf_string_from_elf_section (input_bfd,
3159 symtab_hdr->sh_link,
3160 sym->st_name);
3161 if (name == NULL)
b34976b6 3162 return FALSE;
0451c93c
MS		 3163 if (*name == '\0')
3164 name = bfd_section_name (input_bfd, sec);
3165 }
ec338859 3166
0451c93c 3167 if (r == bfd_reloc_overflow)
1a72702b
AM		 3168 (*info->callbacks->reloc_overflow)
3169 (info, (h ? &h->root : NULL), name, howto->name,
3170 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
0451c93c
MS		 3171 else
3172 {
4eca0228 3173 _bfd_error_handler
695344c0 3174 /* xgettext:c-format */
871b3ab2 3175 (_("%pB(%pA+%#Lx): reloc against `%s': error %d"),
d003868e 3176 input_bfd, input_section,
d42c267e 3177 rel->r_offset, name, (int) r);
b34976b6 3178 return FALSE;
a85d7ed0
NC		 3179 }
3180 }
3181 }
3182
b34976b6 3183 return TRUE;
a85d7ed0
NC		 3184}
3185
470b557a
AK		 3186/* Generate the PLT slots together with the dynamic relocations needed
3187 for IFUNC symbols. */
3188
3189static void
3190elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3191 struct bfd_link_info *info,
3192 struct elf_link_hash_entry *h,
3193 struct elf_s390_link_hash_table *htab,
3194 bfd_vma plt_offset,
3195 bfd_vma resolver_address)
3196{
3197 bfd_vma plt_index;
3198 bfd_vma got_offset;
3199 Elf_Internal_Rela rela;
3200 bfd_byte *loc;
3201 asection *plt, *gotplt, *relplt;
3202
3203 if (htab->elf.iplt == NULL
3204 || htab->elf.igotplt == NULL
3205 || htab->elf.irelplt == NULL)
3206 abort ();
3207
3208 /* Index of the PLT slot within iplt section. */
3209 plt_index = plt_offset / PLT_ENTRY_SIZE;
3210 plt = htab->elf.iplt;
3211 /* Offset into the igot.plt section. */
3212 got_offset = plt_index * GOT_ENTRY_SIZE;
3213 gotplt = htab->elf.igotplt;
3214 relplt = htab->elf.irelplt;
3215
3216 /* Fill in the blueprint of a PLT. */
3217 memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
3218 PLT_ENTRY_SIZE);
3219
3220 /* Fixup the relative address to the GOT entry */
3221 bfd_put_32 (output_bfd,
3222 (gotplt->output_section->vma +
3223 gotplt->output_offset + got_offset
3224 - (plt->output_section->vma +
3225 plt->output_offset +
3226 plt_offset))/2,
3227 plt->contents + plt_offset + 2);
3228 /* Fixup the relative branch to PLT 0 */
3229 bfd_put_32 (output_bfd, - (plt->output_offset +
3230 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3231 plt->contents + plt_offset + 24);
3232 /* Fixup offset into .rela.plt section. */
3233 bfd_put_32 (output_bfd, relplt->output_offset +
3234 plt_index * sizeof (Elf64_External_Rela),
3235 plt->contents + plt_offset + 28);
3236
3237 /* Fill in the entry in the global offset table.
3238 Points to instruction after GOT offset. */
3239 bfd_put_64 (output_bfd,
3240 (plt->output_section->vma
3241 + plt->output_offset
3242 + plt_offset
3243 + 14),
3244 gotplt->contents + got_offset);
3245
3246 /* Fill in the entry in the .rela.plt section. */
3247 rela.r_offset = (gotplt->output_section->vma
3248 + gotplt->output_offset
3249 + got_offset);
3250
3251 if (!h
3252 || h->dynindx == -1
0e1862bb 3253 || ((bfd_link_executable (info)
470b557a
AK		 3254 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3255 && h->def_regular))
3256 {
3257 /* The symbol can be locally resolved. */
3258 rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
3259 rela.r_addend = resolver_address;
3260 }
3261 else
3262 {
3263 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3264 rela.r_addend = 0;
3265 }
3266
3267 loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
3268 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3269}
3270
3271
a85d7ed0
NC		 3272/* Finish up dynamic symbol handling. We set the contents of various
3273 dynamic sections here. */
3274
b34976b6 3275static bfd_boolean
4dfe6ac6
NC		 3276elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3277 struct bfd_link_info *info,
3278 struct elf_link_hash_entry *h,
3279 Elf_Internal_Sym *sym)
a85d7ed0 3280{
0451c93c 3281 struct elf_s390_link_hash_table *htab;
470b557a 3282 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
a85d7ed0 3283
0451c93c 3284 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3285 if (htab == NULL)
3286 return FALSE;
a85d7ed0
NC		 3287
3288 if (h->plt.offset != (bfd_vma) -1)
3289 {
a85d7ed0 3290 bfd_vma plt_index;
0451c93c
MS		 3291 bfd_vma got_offset;
3292 Elf_Internal_Rela rela;
947216bf 3293 bfd_byte *loc;
a85d7ed0
NC		 3294
3295 /* This symbol has an entry in the procedure linkage table. Set
947216bf 3296 it up. */
0a511368 3297 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
470b557a 3298 {
0a511368
AK		 3299 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3300 htab, h->plt.offset,
3301 eh->ifunc_resolver_address +
3302 eh->ifunc_resolver_section->output_offset +
3303 eh->ifunc_resolver_section->output_section->vma);
3304
3305 /* Do not return yet. Handling of explicit GOT slots of
3306 IFUNC symbols is below. */
470b557a
AK		 3307 }
3308 else
3309 {
3310 if (h->dynindx == -1
3311 || htab->elf.splt == NULL
3312 || htab->elf.sgotplt == NULL
3313 || htab->elf.srelplt == NULL)
3314 abort ();
a85d7ed0 3315
470b557a
AK		 3316 /* Calc. index no.
3317 Current offset - size first entry / entry size. */
3318 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
a85d7ed0 3319
470b557a
AK		 3320 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
3321 addr & GOT addr. */
3322 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3323
470b557a
AK		 3324 /* Fill in the blueprint of a PLT. */
3325 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
3326 PLT_ENTRY_SIZE);
3327
3328 /* Fixup the relative address to the GOT entry */
3329 bfd_put_32 (output_bfd,
3330 (htab->elf.sgotplt->output_section->vma +
3331 htab->elf.sgotplt->output_offset + got_offset
3332 - (htab->elf.splt->output_section->vma +
3333 htab->elf.splt->output_offset +
3334 h->plt.offset))/2,
3335 htab->elf.splt->contents + h->plt.offset + 2);
3336 /* Fixup the relative branch to PLT 0 */
3337 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3338 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3339 htab->elf.splt->contents + h->plt.offset + 24);
3340 /* Fixup offset into .rela.plt section. */
3341 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3342 htab->elf.splt->contents + h->plt.offset + 28);
3343
3344 /* Fill in the entry in the global offset table.
3345 Points to instruction after GOT offset. */
3346 bfd_put_64 (output_bfd,
3347 (htab->elf.splt->output_section->vma
3348 + htab->elf.splt->output_offset
3349 + h->plt.offset
3350 + 14),
3351 htab->elf.sgotplt->contents + got_offset);
3352
3353 /* Fill in the entry in the .rela.plt section. */
3354 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3355 + htab->elf.sgotplt->output_offset
3356 + got_offset);
3357 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3358 rela.r_addend = 0;
3359 loc = htab->elf.srelplt->contents + plt_index *
3360 sizeof (Elf64_External_Rela);
3361 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3362
3363 if (!h->def_regular)
3364 {
3365 /* Mark the symbol as undefined, rather than as defined in
3366 the .plt section. Leave the value alone. This is a clue
3367 for the dynamic linker, to make function pointer
3368 comparisons work between an application and shared
3369 library. */
3370 sym->st_shndx = SHN_UNDEF;
3371 }
a85d7ed0
NC		 3372 }
3373 }
3374
69fc87f1
MS		 3375 if (h->got.offset != (bfd_vma) -1
3376 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3377 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3378 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3379 {
a85d7ed0 3380 Elf_Internal_Rela rela;
947216bf 3381 bfd_byte *loc;
a85d7ed0
NC		 3382
3383 /* This symbol has an entry in the global offset table. Set it
947216bf 3384 up. */
f41345a7 3385 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3386 abort ();
a85d7ed0 3387
f41345a7
AK		 3388 rela.r_offset = (htab->elf.sgot->output_section->vma
3389 + htab->elf.sgot->output_offset
dc810e39 3390 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0 3391
470b557a
AK		 3392 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3393 {
0e1862bb 3394 if (bfd_link_pic (info))
470b557a
AK		 3395 {
3396 /* An explicit GOT slot usage needs GLOB_DAT. If the
3397 symbol references local the implicit got.iplt slot
3398 will be used and the IRELATIVE reloc has been created
3399 above. */
3400 goto do_glob_dat;
3401 }
3402 else
3403 {
3404 /* For non-shared objects explicit GOT slots must be
3405 filled with the PLT slot address for pointer
3406 equality reasons. */
3407 bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
3408 + htab->elf.iplt->output_offset
3409 + h->plt.offset),
3410 htab->elf.sgot->contents + h->got.offset);
3411 return TRUE;
3412 }
3413 }
0e1862bb 3414 else if (bfd_link_pic (info)
ceada896 3415 && SYMBOL_REFERENCES_LOCAL (info, h))
947216bf 3416 {
10e7c045
AK		 3417 if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
3418 return TRUE;
3419
470b557a
AK		 3420 /* If this is a static link, or it is a -Bsymbolic link and
3421 the symbol is defined locally or was forced to be local
3422 because of a version file, we just want to emit a
3423 RELATIVE reloc. The entry in the global offset table
3424 will already have been initialized in the
3425 relocate_section function. */
8170f769 3426 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
8c21ca21 3427 return FALSE;
0451c93c 3428 BFD_ASSERT((h->got.offset & 1) != 0);
947216bf
AM		 3429 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3430 rela.r_addend = (h->root.u.def.value
3431 + h->root.u.def.section->output_section->vma
3432 + h->root.u.def.section->output_offset);
3433 }
a85d7ed0
NC		 3434 else
3435 {
3436 BFD_ASSERT((h->got.offset & 1) == 0);
ceada896 3437 do_glob_dat:
f41345a7 3438 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3439 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
947216bf
AM		 3440 rela.r_addend = 0;
3441 }
a85d7ed0 3442
f41345a7
AK		 3443 loc = htab->elf.srelgot->contents;
3444 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3445 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3446 }
3447
f5385ebf 3448 if (h->needs_copy)
a85d7ed0 3449 {
a85d7ed0 3450 Elf_Internal_Rela rela;
5474d94f 3451 asection *s;
947216bf 3452 bfd_byte *loc;
a85d7ed0
NC		 3453
3454 /* This symbols needs a copy reloc. Set it up. */
3455
0451c93c
MS		 3456 if (h->dynindx == -1
3457 || (h->root.type != bfd_link_hash_defined
3458 && h->root.type != bfd_link_hash_defweak)
9d19e4fd 3459 || htab->elf.srelbss == NULL)
0451c93c 3460 abort ();
a85d7ed0
NC		 3461
3462 rela.r_offset = (h->root.u.def.value
3463 + h->root.u.def.section->output_section->vma
3464 + h->root.u.def.section->output_offset);
3465 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3466 rela.r_addend = 0;
afbf7e8e 3467 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 3468 s = htab->elf.sreldynrelro;
3469 else
3470 s = htab->elf.srelbss;
3471 loc = s->contents + s->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3472 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3473 }
3474
3475 /* Mark some specially defined symbols as absolute. */
9637f6ef 3476 if (h == htab->elf.hdynamic
22edb2f1
RS		 3477 || h == htab->elf.hgot
3478 || h == htab->elf.hplt)
a85d7ed0
NC		 3479 sym->st_shndx = SHN_ABS;
3480
b34976b6 3481 return TRUE;
a85d7ed0
NC		 3482}
3483
0451c93c
MS		 3484/* Used to decide how to sort relocs in an optimal manner for the
3485 dynamic linker, before writing them out. */
3486
3487static enum elf_reloc_type_class
7e612e98
AM		 3488elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3489 const asection *rel_sec ATTRIBUTE_UNUSED,
3490 const Elf_Internal_Rela *rela)
0451c93c 3491{
0f042c67
AK		 3492 bfd *abfd = info->output_bfd;
3493 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3494 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3495 unsigned long r_symndx = ELF64_R_SYM (rela->r_info);
3496 Elf_Internal_Sym sym;
3497
3498 if (htab->elf.dynsym == NULL
3499 || !bed->s->swap_symbol_in (abfd,
3500 (htab->elf.dynsym->contents
3501 + r_symndx * bed->s->sizeof_sym),
3502 0, &sym))
3503 abort ();
3504
3505 /* Check relocation against STT_GNU_IFUNC symbol. */
3506 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3507 return reloc_class_ifunc;
3508
0451c93c
MS		 3509 switch ((int) ELF64_R_TYPE (rela->r_info))
3510 {
3511 case R_390_RELATIVE:
3512 return reloc_class_relative;
3513 case R_390_JMP_SLOT:
3514 return reloc_class_plt;
3515 case R_390_COPY:
3516 return reloc_class_copy;
3517 default:
3518 return reloc_class_normal;
3519 }
3520}
3521
a85d7ed0
NC		 3522/* Finish up the dynamic sections. */
3523
b34976b6 3524static bfd_boolean
4dfe6ac6
NC		 3525elf_s390_finish_dynamic_sections (bfd *output_bfd,
3526 struct bfd_link_info *info)
a85d7ed0 3527{
0451c93c 3528 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3529 bfd *dynobj;
3530 asection *sdyn;
470b557a
AK		 3531 bfd *ibfd;
3532 unsigned int i;
a85d7ed0 3533
0451c93c 3534 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3535 if (htab == NULL)
3536 return FALSE;
3537
0451c93c 3538 dynobj = htab->elf.dynobj;
3d4d4302 3539 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3540
0451c93c 3541 if (htab->elf.dynamic_sections_created)
a85d7ed0 3542 {
a85d7ed0
NC		 3543 Elf64_External_Dyn *dyncon, *dynconend;
3544
f41345a7 3545 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3546 abort ();
a85d7ed0
NC		 3547
3548 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 3549 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3550 for (; dyncon < dynconend; dyncon++)
3551 {
3552 Elf_Internal_Dyn dyn;
a85d7ed0 3553 asection *s;
ec338859 3554
a85d7ed0 3555 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3556
a85d7ed0
NC		 3557 switch (dyn.d_tag)
3558 {
3559 default:
0451c93c 3560 continue;
ec338859 3561
a85d7ed0 3562 case DT_PLTGOT:
4ade44b7
AM		 3563 s = htab->elf.sgotplt;
3564 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
0451c93c 3565 break;
ec338859 3566
a85d7ed0 3567 case DT_JMPREL:
4ade44b7
AM		 3568 s = htab->elf.srelplt;
3569 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a85d7ed0 3570 break;
ec338859 3571
a85d7ed0 3572 case DT_PLTRELSZ:
79c12fae
AK		 3573 dyn.d_un.d_val = htab->elf.srelplt->size;
3574 if (htab->elf.irelplt)
3575 dyn.d_un.d_val += htab->elf.irelplt->size;
a85d7ed0 3576 break;
ec338859 3577
a85d7ed0
NC		 3578 case DT_RELASZ:
3579 /* The procedure linkage table relocs (DT_JMPREL) should
3580 not be included in the overall relocs (DT_RELA).
3581 Therefore, we override the DT_RELASZ entry here to
3582 make it not include the JMPREL relocs. Since the
3583 linker script arranges for .rela.plt to follow all
3584 other relocation sections, we don't have to worry
3585 about changing the DT_RELA entry. */
79c12fae
AK		 3586 dyn.d_un.d_val -= htab->elf.srelplt->size;
3587 if (htab->elf.irelplt)
3588 dyn.d_un.d_val -= htab->elf.irelplt->size;
a85d7ed0
NC		 3589 break;
3590 }
0451c93c
MS		 3591
3592 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3593 }
3594
3595 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3596 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0
NC		 3597 {
3598 /* fill in blueprint for plt 0 entry */
f41345a7 3599 memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
9aa17453 3600 PLT_FIRST_ENTRY_SIZE);
a85d7ed0
NC		 3601 /* Fixup relative address to start of GOT */
3602 bfd_put_32 (output_bfd,
161db279
AK		 3603 (htab->elf.sgotplt->output_section->vma
3604 + htab->elf.sgotplt->output_offset
3605 - htab->elf.splt->output_section->vma
3606 - htab->elf.splt->output_offset - 6)/2,
f41345a7 3607 htab->elf.splt->contents + 8);
a85d7ed0 3608 }
387f8054
MR		 3609 if (elf_section_data (htab->elf.splt->output_section) != NULL)
3610 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
3611 = PLT_ENTRY_SIZE;
a85d7ed0
NC		 3612 }
3613
f41345a7 3614 if (htab->elf.sgotplt)
a85d7ed0 3615 {
0451c93c 3616 /* Fill in the first three entries in the global offset table. */
f41345a7 3617 if (htab->elf.sgotplt->size > 0)
0451c93c
MS		 3618 {
3619 bfd_put_64 (output_bfd,
3620 (sdyn == NULL ? (bfd_vma) 0
3621 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3622 htab->elf.sgotplt->contents);
0451c93c 3623 /* One entry for shared object struct ptr. */
f41345a7 3624 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3625 /* One entry for _dl_runtime_resolve. */
3b67f094 3626 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 16);
0451c93c 3627 }
a85d7ed0 3628
f41345a7 3629 elf_section_data (htab->elf.sgot->output_section)
0451c93c
MS		 3630 ->this_hdr.sh_entsize = 8;
3631 }
470b557a
AK		 3632
3633 /* Finish dynamic symbol for local IFUNC symbols. */
c72f2fb2 3634 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
470b557a
AK		 3635 {
3636 struct plt_entry *local_plt;
3637 Elf_Internal_Sym *isym;
3638 Elf_Internal_Shdr *symtab_hdr;
3639
3640 symtab_hdr = &elf_symtab_hdr (ibfd);
3641
1ef692ea
AK		 3642 if (!is_s390_elf (ibfd))
3643 continue;
3644
470b557a
AK		 3645 local_plt = elf_s390_local_plt (ibfd);
3646 if (local_plt != NULL)
3647 for (i = 0; i < symtab_hdr->sh_info; i++)
3648 {
3649 if (local_plt[i].plt.offset != (bfd_vma) -1)
3650 {
3651 asection *sec = local_plt[i].sec;
3652 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3653 if (isym == NULL)
3654 return FALSE;
3655
3656 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3657 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3658 local_plt[i].plt.offset,
3659 isym->st_value
3660 + sec->output_section->vma
3661 + sec->output_offset);
3662
3663 }
3664 }
3665 }
3666
b34976b6 3667 return TRUE;
a85d7ed0 3668}
e3e9290d
AA		 3669\f
3670/* Support for core dump NOTE sections. */
a85d7ed0 3671
e3e9290d
AA		 3672static bfd_boolean
3673elf_s390_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3674{
3675 int offset;
3676 size_t size;
3677
3678 switch (note->descsz)
3679 {
3680 default:
3681 return FALSE;
3682
3683 case 336: /* sizeof(struct elf_prstatus) on s390x */
3684 /* pr_cursig */
3685 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
3686
3687 /* pr_pid */
3688 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
3689
3690 /* pr_reg */
3691 offset = 112;
3692 size = 216;
3693 break;
3694 }
3695
3696 /* Make a ".reg/999" section. */
3697 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3698 size, note->descpos + offset);
3699}
3700
3701static bfd_boolean
3702elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3703{
3704 switch (note->descsz)
3705 {
3706 default:
3707 return FALSE;
3708
3709 case 136: /* sizeof(struct elf_prpsinfo) on s390x */
3710 elf_tdata (abfd)->core->pid
3711 = bfd_get_32 (abfd, note->descdata + 24);
3712 elf_tdata (abfd)->core->program
3713 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
3714 elf_tdata (abfd)->core->command
3715 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
3716 }
3717
3718 /* Note that for some reason, a spurious space is tacked
3719 onto the end of the args in some (at least one anyway)
3720 implementations, so strip it off if it exists. */
3721
3722 {
3723 char *command = elf_tdata (abfd)->core->command;
3724 int n = strlen (command);
3725
3726 if (0 < n && command[n - 1] == ' ')
3727 command[n - 1] = '\0';
3728 }
3729
3730 return TRUE;
3731}
3732
3733static char *
3734elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
3735 int note_type, ...)
3736{
3737 va_list ap;
3738
3739 switch (note_type)
3740 {
3741 default:
3742 return NULL;
3743
3744 case NT_PRPSINFO:
3745 {
3746 char data[136] = { 0 };
3747 const char *fname, *psargs;
3748
3749 va_start (ap, note_type);
3750 fname = va_arg (ap, const char *);
3751 psargs = va_arg (ap, const char *);
3752 va_end (ap);
3753
3754 strncpy (data + 40, fname, 16);
3755 strncpy (data + 56, psargs, 80);
3756 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3757 &data, sizeof (data));
3758 }
3759
3760 case NT_PRSTATUS:
3761 {
3762 char data[336] = { 0 };
3763 long pid;
3764 int cursig;
3765 const void *gregs;
3766
3767 va_start (ap, note_type);
3768 pid = va_arg (ap, long);
3769 cursig = va_arg (ap, int);
3770 gregs = va_arg (ap, const void *);
3771 va_end (ap);
3772
3773 bfd_put_16 (abfd, cursig, data + 12);
3774 bfd_put_32 (abfd, pid, data + 32);
3775 memcpy (data + 112, gregs, 216);
3776 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3777 &data, sizeof (data));
3778 }
3779 }
3780 /* NOTREACHED */
3781}
3782\f
4c45e5c9
JJ		 3783/* Return address for Ith PLT stub in section PLT, for relocation REL
3784 or (bfd_vma) -1 if it should not be included. */
3785
3786static bfd_vma
3787elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3788 const arelent *rel ATTRIBUTE_UNUSED)
3789{
3790 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3791}
3792
643f7afb
AK		 3793/* Merge backend specific data from an object file to the output
3794 object file when linking. */
3795
3796static bfd_boolean
50e03d47 3797elf64_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
643f7afb 3798{
50e03d47 3799 if (!is_s390_elf (ibfd) || !is_s390_elf (info->output_bfd))
643f7afb
AK		 3800 return TRUE;
3801
50e03d47 3802 return elf_s390_merge_obj_attributes (ibfd, info);
643f7afb
AK		 3803}
3804
b4cbbe8f
AK		 3805/* We may add a PT_S390_PGSTE program header. */
3806
3807static int
3808elf_s390_additional_program_headers (bfd *abfd ATTRIBUTE_UNUSED,
3809 struct bfd_link_info *info)
3810{
3811 struct elf_s390_link_hash_table *htab;
3812
93ec5e23
AK		 3813 if (info)
3814 {
3815 htab = elf_s390_hash_table (info);
3816 if (htab)
3817 return htab->params->pgste;
3818 }
3819 return 0;
b4cbbe8f
AK		 3820}
3821
3822
3823/* Add the PT_S390_PGSTE program header. */
3824
3825static bfd_boolean
93ec5e23 3826elf_s390_modify_segment_map (bfd *abfd, struct bfd_link_info *info)
b4cbbe8f
AK		 3827{
3828 struct elf_s390_link_hash_table *htab;
3829 struct elf_segment_map *m, *pm = NULL;
3830
93ec5e23
AK		 3831 if (!abfd || !info)
3832 return TRUE;
3833
b4cbbe8f 3834 htab = elf_s390_hash_table (info);
93ec5e23 3835 if (!htab || !htab->params->pgste)
b4cbbe8f
AK		 3836 return TRUE;
3837
3838 /* If there is already a PT_S390_PGSTE header, avoid adding
3839 another. */
3840 m = elf_seg_map (abfd);
3841 while (m && m->p_type != PT_S390_PGSTE)
3842 {
3843 pm = m;
3844 m = m->next;
3845 }
3846
3847 if (m)
3848 return TRUE;
3849
3850 m = (struct elf_segment_map *)
3851 bfd_zalloc (abfd, sizeof (struct elf_segment_map));
3852 if (m == NULL)
3853 return FALSE;
3854 m->p_type = PT_S390_PGSTE;
3855 m->count = 0;
3856 m->next = NULL;
3857 if (pm)
3858 pm->next = m;
3859
3860 return TRUE;
3861}
3862
3863bfd_boolean
3864bfd_elf_s390_set_options (struct bfd_link_info *info,
3865 struct s390_elf_params *params)
3866{
3867 struct elf_s390_link_hash_table *htab;
3868
93ec5e23
AK		 3869 if (info)
3870 {
3871 htab = elf_s390_hash_table (info);
3872 if (htab)
3873 htab->params = params;
3874 }
b4cbbe8f
AK		 3875
3876 return TRUE;
3877}
3878
3879
ae9a127f
NC		 3880/* Why was the hash table entry size definition changed from
3881 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3882 this is the only reason for the s390_elf64_size_info structure. */
a85d7ed0
NC		 3883
3884const struct elf_size_info s390_elf64_size_info =
3885{
3886 sizeof (Elf64_External_Ehdr),
3887 sizeof (Elf64_External_Phdr),
3888 sizeof (Elf64_External_Shdr),
3889 sizeof (Elf64_External_Rel),
3890 sizeof (Elf64_External_Rela),
3891 sizeof (Elf64_External_Sym),
3892 sizeof (Elf64_External_Dyn),
3893 sizeof (Elf_External_Note),
ae9a127f
NC		 3894 8, /* hash-table entry size. */
3895 1, /* internal relocations per external relocations. */
3896 64, /* arch_size. */
45d6a902 3897 3, /* log_file_align. */
a85d7ed0
NC		 3898 ELFCLASS64, EV_CURRENT,
3899 bfd_elf64_write_out_phdrs,
3900 bfd_elf64_write_shdrs_and_ehdr,
1489a3a0 3901 bfd_elf64_checksum_contents,
a85d7ed0 3902 bfd_elf64_write_relocs,
73ff0d56 3903 bfd_elf64_swap_symbol_in,
a85d7ed0
NC		 3904 bfd_elf64_swap_symbol_out,
3905 bfd_elf64_slurp_reloc_table,
3906 bfd_elf64_slurp_symbol_table,
3907 bfd_elf64_swap_dyn_in,
3908 bfd_elf64_swap_dyn_out,
947216bf
AM		 3909 bfd_elf64_swap_reloc_in,
3910 bfd_elf64_swap_reloc_out,
3911 bfd_elf64_swap_reloca_in,
3912 bfd_elf64_swap_reloca_out
a85d7ed0
NC		 3913};
3914
6d00b590 3915#define TARGET_BIG_SYM s390_elf64_vec
a85d7ed0
NC		 3916#define TARGET_BIG_NAME "elf64-s390"
3917#define ELF_ARCH bfd_arch_s390
ae95ffa6 3918#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 3919#define ELF_MACHINE_CODE EM_S390
3920#define ELF_MACHINE_ALT1 EM_S390_OLD
3921#define ELF_MAXPAGESIZE 0x1000
3922
3923#define elf_backend_size_info s390_elf64_size_info
3924
3925#define elf_backend_can_gc_sections 1
51b64d56 3926#define elf_backend_can_refcount 1
a85d7ed0
NC		 3927#define elf_backend_want_got_plt 1
3928#define elf_backend_plt_readonly 1
3929#define elf_backend_want_plt_sym 0
3930#define elf_backend_got_header_size 24
5474d94f 3931#define elf_backend_want_dynrelro 1
b491616a 3932#define elf_backend_rela_normal 1
a85d7ed0
NC		 3933
3934#define elf_info_to_howto elf_s390_info_to_howto
3935
a85d7ed0
NC		 3936#define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3937#define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3938#define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
07d6d2b8 3939#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
643f7afb 3940#define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
a85d7ed0
NC		 3941
3942#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3943#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c 3944#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
9d19e4fd 3945#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
a85d7ed0
NC		 3946#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3947#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3948#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
0451c93c 3949#define elf_backend_reloc_type_class elf_s390_reloc_type_class
a85d7ed0
NC		 3950#define elf_backend_relocate_section elf_s390_relocate_section
3951#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 3952#define elf_backend_init_index_section _bfd_elf_init_1_index_section
e3e9290d
AA		 3953#define elf_backend_grok_prstatus elf_s390_grok_prstatus
3954#define elf_backend_grok_psinfo elf_s390_grok_psinfo
3955#define elf_backend_write_core_note elf_s390_write_core_note
4c45e5c9 3956#define elf_backend_plt_sym_val elf_s390_plt_sym_val
07d6d2b8
AM		 3957#define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
3958#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
b4cbbe8f
AK		 3959#define elf_backend_additional_program_headers elf_s390_additional_program_headers
3960#define elf_backend_modify_segment_map elf_s390_modify_segment_map
a85d7ed0 3961
69fc87f1
MS		 3962#define bfd_elf64_mkobject elf_s390_mkobject
3963#define elf_backend_object_p elf_s390_object_p
a85d7ed0
NC		 3964
3965#include "elf64-target.h"
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