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Fix diagnostic errors
[deliverable/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 *
f3185997 192elf_s390_reloc_type_lookup (bfd *abfd,
2c3fc389 193 bfd_reloc_code_real_type code)
a85d7ed0 194{
0451c93c
MS		 195 switch (code)
196 {
197 case BFD_RELOC_NONE:
198 return &elf_howto_table[(int) R_390_NONE];
199 case BFD_RELOC_8:
200 return &elf_howto_table[(int) R_390_8];
201 case BFD_RELOC_390_12:
202 return &elf_howto_table[(int) R_390_12];
203 case BFD_RELOC_16:
204 return &elf_howto_table[(int) R_390_16];
205 case BFD_RELOC_32:
206 return &elf_howto_table[(int) R_390_32];
207 case BFD_RELOC_CTOR:
208 return &elf_howto_table[(int) R_390_32];
209 case BFD_RELOC_32_PCREL:
210 return &elf_howto_table[(int) R_390_PC32];
211 case BFD_RELOC_390_GOT12:
212 return &elf_howto_table[(int) R_390_GOT12];
213 case BFD_RELOC_32_GOT_PCREL:
214 return &elf_howto_table[(int) R_390_GOT32];
215 case BFD_RELOC_390_PLT32:
216 return &elf_howto_table[(int) R_390_PLT32];
217 case BFD_RELOC_390_COPY:
218 return &elf_howto_table[(int) R_390_COPY];
219 case BFD_RELOC_390_GLOB_DAT:
220 return &elf_howto_table[(int) R_390_GLOB_DAT];
221 case BFD_RELOC_390_JMP_SLOT:
222 return &elf_howto_table[(int) R_390_JMP_SLOT];
223 case BFD_RELOC_390_RELATIVE:
224 return &elf_howto_table[(int) R_390_RELATIVE];
225 case BFD_RELOC_32_GOTOFF:
5236c819 226 return &elf_howto_table[(int) R_390_GOTOFF32];
0451c93c
MS		 227 case BFD_RELOC_390_GOTPC:
228 return &elf_howto_table[(int) R_390_GOTPC];
229 case BFD_RELOC_390_GOT16:
230 return &elf_howto_table[(int) R_390_GOT16];
231 case BFD_RELOC_16_PCREL:
232 return &elf_howto_table[(int) R_390_PC16];
fb798c50
AK		 233 case BFD_RELOC_390_PC12DBL:
234 return &elf_howto_table[(int) R_390_PC12DBL];
235 case BFD_RELOC_390_PLT12DBL:
236 return &elf_howto_table[(int) R_390_PLT12DBL];
0451c93c
MS		 237 case BFD_RELOC_390_PC16DBL:
238 return &elf_howto_table[(int) R_390_PC16DBL];
239 case BFD_RELOC_390_PLT16DBL:
240 return &elf_howto_table[(int) R_390_PLT16DBL];
fb798c50
AK		 241 case BFD_RELOC_390_PC24DBL:
242 return &elf_howto_table[(int) R_390_PC24DBL];
243 case BFD_RELOC_390_PLT24DBL:
244 return &elf_howto_table[(int) R_390_PLT24DBL];
0451c93c
MS		 245 case BFD_RELOC_390_PC32DBL:
246 return &elf_howto_table[(int) R_390_PC32DBL];
247 case BFD_RELOC_390_PLT32DBL:
248 return &elf_howto_table[(int) R_390_PLT32DBL];
249 case BFD_RELOC_390_GOTPCDBL:
250 return &elf_howto_table[(int) R_390_GOTPCDBL];
251 case BFD_RELOC_64:
252 return &elf_howto_table[(int) R_390_64];
253 case BFD_RELOC_64_PCREL:
254 return &elf_howto_table[(int) R_390_PC64];
255 case BFD_RELOC_390_GOT64:
256 return &elf_howto_table[(int) R_390_GOT64];
257 case BFD_RELOC_390_PLT64:
258 return &elf_howto_table[(int) R_390_PLT64];
259 case BFD_RELOC_390_GOTENT:
260 return &elf_howto_table[(int) R_390_GOTENT];
5236c819
MS		 261 case BFD_RELOC_16_GOTOFF:
262 return &elf_howto_table[(int) R_390_GOTOFF16];
263 case BFD_RELOC_390_GOTOFF64:
264 return &elf_howto_table[(int) R_390_GOTOFF64];
265 case BFD_RELOC_390_GOTPLT12:
266 return &elf_howto_table[(int) R_390_GOTPLT12];
267 case BFD_RELOC_390_GOTPLT16:
268 return &elf_howto_table[(int) R_390_GOTPLT16];
269 case BFD_RELOC_390_GOTPLT32:
270 return &elf_howto_table[(int) R_390_GOTPLT32];
271 case BFD_RELOC_390_GOTPLT64:
272 return &elf_howto_table[(int) R_390_GOTPLT64];
273 case BFD_RELOC_390_GOTPLTENT:
274 return &elf_howto_table[(int) R_390_GOTPLTENT];
275 case BFD_RELOC_390_PLTOFF16:
276 return &elf_howto_table[(int) R_390_PLTOFF16];
277 case BFD_RELOC_390_PLTOFF32:
278 return &elf_howto_table[(int) R_390_PLTOFF32];
279 case BFD_RELOC_390_PLTOFF64:
280 return &elf_howto_table[(int) R_390_PLTOFF64];
69fc87f1
MS		 281 case BFD_RELOC_390_TLS_LOAD:
282 return &elf_howto_table[(int) R_390_TLS_LOAD];
283 case BFD_RELOC_390_TLS_GDCALL:
284 return &elf_howto_table[(int) R_390_TLS_GDCALL];
285 case BFD_RELOC_390_TLS_LDCALL:
286 return &elf_howto_table[(int) R_390_TLS_LDCALL];
287 case BFD_RELOC_390_TLS_GD64:
288 return &elf_howto_table[(int) R_390_TLS_GD64];
289 case BFD_RELOC_390_TLS_GOTIE12:
290 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
291 case BFD_RELOC_390_TLS_GOTIE64:
292 return &elf_howto_table[(int) R_390_TLS_GOTIE64];
293 case BFD_RELOC_390_TLS_LDM64:
294 return &elf_howto_table[(int) R_390_TLS_LDM64];
295 case BFD_RELOC_390_TLS_IE64:
296 return &elf_howto_table[(int) R_390_TLS_IE64];
297 case BFD_RELOC_390_TLS_IEENT:
298 return &elf_howto_table[(int) R_390_TLS_IEENT];
299 case BFD_RELOC_390_TLS_LE64:
300 return &elf_howto_table[(int) R_390_TLS_LE64];
301 case BFD_RELOC_390_TLS_LDO64:
302 return &elf_howto_table[(int) R_390_TLS_LDO64];
303 case BFD_RELOC_390_TLS_DTPMOD:
304 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
305 case BFD_RELOC_390_TLS_DTPOFF:
306 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
307 case BFD_RELOC_390_TLS_TPOFF:
308 return &elf_howto_table[(int) R_390_TLS_TPOFF];
bd1ea41b
MS		 309 case BFD_RELOC_390_20:
310 return &elf_howto_table[(int) R_390_20];
311 case BFD_RELOC_390_GOT20:
312 return &elf_howto_table[(int) R_390_GOT20];
313 case BFD_RELOC_390_GOTPLT20:
314 return &elf_howto_table[(int) R_390_GOTPLT20];
315 case BFD_RELOC_390_TLS_GOTIE20:
316 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
470b557a
AK		 317 case BFD_RELOC_390_IRELATIVE:
318 return &elf_howto_table[(int) R_390_IRELATIVE];
5236c819
MS		 319 case BFD_RELOC_VTABLE_INHERIT:
320 return &elf64_s390_vtinherit_howto;
321 case BFD_RELOC_VTABLE_ENTRY:
322 return &elf64_s390_vtentry_howto;
0451c93c
MS		 323 default:
324 break;
325 }
f3185997
NC		 326
327 /* xgettext:c-format */
e8f5af78 328 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, (int) code);
f3185997
NC		 329 bfd_set_error (bfd_error_bad_value);
330 return NULL;
a85d7ed0
NC		 331}
332
157090f7
AM		 333static reloc_howto_type *
334elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
335 const char *r_name)
336{
337 unsigned int i;
338
339 for (i = 0;
340 i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
341 i++)
342 if (elf_howto_table[i].name != NULL
343 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
344 return &elf_howto_table[i];
345
0bc7245a
JK		 346 if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
347 return &elf64_s390_vtinherit_howto;
348 if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
349 return &elf64_s390_vtentry_howto;
157090f7
AM		 350
351 return NULL;
352}
353
a85d7ed0
NC		 354/* We need to use ELF64_R_TYPE so we have our own copy of this function,
355 and elf64-s390.c has its own copy. */
356
f3185997 357static bfd_boolean
2c3fc389
NC		 358elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
359 arelent *cache_ptr,
360 Elf_Internal_Rela *dst)
a85d7ed0 361{
d0fb9a8d 362 unsigned int r_type = ELF64_R_TYPE(dst->r_info);
f3185997 363
d0fb9a8d 364 switch (r_type)
a85d7ed0
NC		 365 {
366 case R_390_GNU_VTINHERIT:
367 cache_ptr->howto = &elf64_s390_vtinherit_howto;
368 break;
369
370 case R_390_GNU_VTENTRY:
371 cache_ptr->howto = &elf64_s390_vtentry_howto;
372 break;
373
374 default:
d0fb9a8d
JJ		 375 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
376 {
695344c0 377 /* xgettext:c-format */
0aa13fee
AM		 378 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
379 abfd, r_type);
f3185997
NC		 380 bfd_set_error (bfd_error_bad_value);
381 return FALSE;
d0fb9a8d
JJ		 382 }
383 cache_ptr->howto = &elf_howto_table[r_type];
99c79b2e 384 }
f3185997 385 return TRUE;
a85d7ed0
NC		 386}
387
69fc87f1
MS		 388/* A relocation function which doesn't do anything. */
389static bfd_reloc_status_type
2c3fc389
NC		 390s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
391 arelent *reloc_entry,
392 asymbol *symbol ATTRIBUTE_UNUSED,
393 void * data ATTRIBUTE_UNUSED,
394 asection *input_section,
395 bfd *output_bfd,
396 char **error_message ATTRIBUTE_UNUSED)
69fc87f1
MS		 397{
398 if (output_bfd)
399 reloc_entry->address += input_section->output_offset;
400 return bfd_reloc_ok;
401}
402
bd1ea41b
MS		 403/* Handle the large displacement relocs. */
404static bfd_reloc_status_type
2c3fc389
NC		 405s390_elf_ldisp_reloc (bfd *abfd,
406 arelent *reloc_entry,
407 asymbol *symbol,
408 void * data,
409 asection *input_section,
410 bfd *output_bfd,
411 char **error_message ATTRIBUTE_UNUSED)
bd1ea41b
MS		 412{
413 reloc_howto_type *howto = reloc_entry->howto;
414 bfd_vma relocation;
415 bfd_vma insn;
416
417 if (output_bfd != (bfd *) NULL
418 && (symbol->flags & BSF_SECTION_SYM) == 0
419 && (! howto->partial_inplace
420 || reloc_entry->addend == 0))
421 {
422 reloc_entry->address += input_section->output_offset;
423 return bfd_reloc_ok;
424 }
425 if (output_bfd != NULL)
426 return bfd_reloc_continue;
427
07515404 428 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b
MS		 429 return bfd_reloc_outofrange;
430
431 relocation = (symbol->value
432 + symbol->section->output_section->vma
433 + symbol->section->output_offset);
434 relocation += reloc_entry->addend;
435 if (howto->pc_relative)
436 {
437 relocation -= (input_section->output_section->vma
438 + input_section->output_offset);
439 relocation -= reloc_entry->address;
440 }
441
68ffbac6 442 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
bd1ea41b
MS		 443 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
444 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
445
446 if ((bfd_signed_vma) relocation < - 0x80000
447 || (bfd_signed_vma) relocation > 0x7ffff)
448 return bfd_reloc_overflow;
449 else
450 return bfd_reloc_ok;
451}
452
b34976b6 453static bfd_boolean
2c3fc389 454elf_s390_is_local_label_name (bfd *abfd, const char *name)
a85d7ed0
NC		 455{
456 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 457 return TRUE;
a85d7ed0
NC		 458
459 return _bfd_elf_is_local_label_name (abfd, name);
460}
461
462/* Functions for the 390 ELF linker. */
463
464/* The name of the dynamic interpreter. This is put in the .interp
465 section. */
466
87049b0d 467#define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
a85d7ed0 468
64285810
MS		 469/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
470 copying dynamic variables from a shared lib into an app's dynbss
471 section, and instead use a dynamic relocation to point into the
472 shared lib. */
473#define ELIMINATE_COPY_RELOCS 1
474
a85d7ed0
NC		 475/* The size in bytes of the first entry in the procedure linkage table. */
476#define PLT_FIRST_ENTRY_SIZE 32
477/* The size in bytes of an entry in the procedure linkage table. */
99c79b2e 478#define PLT_ENTRY_SIZE 32
a85d7ed0
NC		 479
480#define GOT_ENTRY_SIZE 8
481
470b557a
AK		 482#define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela)
483
a85d7ed0
NC		 484/* The first three entries in a procedure linkage table are reserved,
485 and the initial contents are unimportant (we zero them out).
486 Subsequent entries look like this. See the SVR4 ABI 386
487 supplement to see how this works. */
488
489/* For the s390, simple addr offset can only be 0 - 4096.
490 To use the full 16777216 TB address space, several instructions
491 are needed to load an address in a register and execute
492 a branch( or just saving the address)
493
99c79b2e 494 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC		 495
496/* The first 3 words in the GOT are then reserved.
497 Word 0 is the address of the dynamic table.
498 Word 1 is a pointer to a structure describing the object
499 Word 2 is used to point to the loader entry address.
500
501 The code for PLT entries looks like this:
502
503 The GOT holds the address in the PLT to be executed.
504 The loader then gets:
3b67f094
MK		 505 48(15) = Pointer to the structure describing the object.
506 56(15) = Offset in symbol table
a85d7ed0
NC		 507 The loader must then find the module where the function is
508 and insert the address in the GOT.
509
510 PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
07d6d2b8
AM		 511 LG 1,0(1) # 6 bytes Load address from GOT in r1
512 BCR 15,1 # 2 bytes Jump to address
513 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
514 LGF 1,12(1) # 6 bytes Load offset in symbl table in r1
515 BRCL 15,-x # 6 bytes Jump to start of PLT
516 .long ? # 4 bytes offset into .rela.plt
a85d7ed0
NC		 517
518 Total = 32 bytes per PLT entry
519 Fixup at offset 2: relative address to GOT entry
520 Fixup at offset 22: relative branch to PLT0
a7e28bbe 521 Fixup at offset 28: 32 bit offset into .rela.plt
a85d7ed0 522
a7e28bbe
AK		 523 A 32 bit offset into the symbol table is enough. It allows for
524 .rela.plt sections up to a size of 2 gigabyte. A single dynamic
525 object (the main program, any shared library) is limited to 4GB in
526 size. Having a .rela.plt of 2GB would already make the .plt
527 section bigger than 8GB. */
a85d7ed0 528
9aa17453
AK		 529static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] =
530 {
07d6d2b8
AM		 531 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
532 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */
533 0x07, 0xf1, /* br %r1 */
534 0x0d, 0x10, /* basr %r1,%r0 */
535 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */
536 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */
537 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */
9aa17453 538 };
a85d7ed0
NC		 539
540/* The first PLT entry pushes the offset into the symbol table
a7e28bbe
AK		 541 from R1 onto the stack at 56(15) and the loader object info
542 at 48(15), loads the loader address in R1 and jumps to it. */
a85d7ed0
NC		 543
544/* The first entry in the PLT:
545
546 PLT0:
547 STG 1,56(15) # r1 contains the offset into the symbol table
548 LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
549 MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
550 LG 1,16(1) # get entry address of loader
551 BCR 15,1 # jump to loader
552
553 Fixup at offset 8: relative address to start of GOT. */
554
9aa17453
AK		 555static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] =
556 {
07d6d2b8
AM		 557 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */
558 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
559 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */
560 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */
561 0x07, 0xf1, /* br %r1 */
562 0x07, 0x00, /* nopr %r0 */
563 0x07, 0x00, /* nopr %r0 */
564 0x07, 0x00 /* nopr %r0 */
9aa17453 565 };
a85d7ed0 566
a85d7ed0
NC		 567
568/* s390 ELF linker hash entry. */
569
570struct elf_s390_link_hash_entry
571{
0451c93c 572 struct elf_link_hash_entry elf;
a85d7ed0 573
0451c93c 574 /* Track dynamic relocs copied for this symbol. */
00d8c7a9 575 struct elf_dyn_relocs *dyn_relocs;
5236c819
MS		 576
577 /* Number of GOTPLT references for a function. */
578 bfd_signed_vma gotplt_refcount;
69fc87f1
MS		 579
580#define GOT_UNKNOWN 0
581#define GOT_NORMAL 1
582#define GOT_TLS_GD 2
583#define GOT_TLS_IE 3
584#define GOT_TLS_IE_NLT 3
585 unsigned char tls_type;
470b557a
AK		 586
587 /* For pointer equality reasons we might need to change the symbol
588 type from STT_GNU_IFUNC to STT_FUNC together with its value and
589 section entry. So after alloc_dynrelocs only these values should
590 be used. In order to check whether a symbol is IFUNC use
591 s390_is_ifunc_symbol_p. */
592 bfd_vma ifunc_resolver_address;
593 asection *ifunc_resolver_section;
a85d7ed0
NC		 594};
595
69fc87f1
MS		 596#define elf_s390_hash_entry(ent) \
597 ((struct elf_s390_link_hash_entry *)(ent))
598
470b557a
AK		 599/* This structure represents an entry in the local PLT list needed for
600 local IFUNC symbols. */
601struct plt_entry
602{
603 /* The section of the local symbol.
604 Set in relocate_section and used in finish_dynamic_sections. */
605 asection *sec;
606
607 union
608 {
609 bfd_signed_vma refcount;
610 bfd_vma offset;
611 } plt;
612};
613
0ffa91dd
NC		 614/* NOTE: Keep this structure in sync with
615 the one declared in elf32-s390.c. */
69fc87f1
MS		 616struct elf_s390_obj_tdata
617{
618 struct elf_obj_tdata root;
619
470b557a
AK		 620 /* A local PLT is needed for ifunc symbols. */
621 struct plt_entry *local_plt;
622
0ffa91dd 623 /* TLS type for each local got entry. */
69fc87f1
MS		 624 char *local_got_tls_type;
625};
626
627#define elf_s390_tdata(abfd) \
628 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
629
470b557a
AK		 630#define elf_s390_local_plt(abfd) \
631 (elf_s390_tdata (abfd)->local_plt)
632
69fc87f1
MS		 633#define elf_s390_local_got_tls_type(abfd) \
634 (elf_s390_tdata (abfd)->local_got_tls_type)
635
0ffa91dd
NC		 636#define is_s390_elf(bfd) \
637 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
638 && elf_tdata (bfd) != NULL \
4dfe6ac6 639 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 640
69fc87f1 641static bfd_boolean
62d7a5f6 642elf_s390_mkobject (bfd *abfd)
69fc87f1 643{
0ffa91dd 644 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 645 S390_ELF_DATA);
69fc87f1
MS		 646}
647
648static bfd_boolean
2c3fc389 649elf_s390_object_p (bfd *abfd)
69fc87f1 650{
69fc87f1
MS		 651 /* Set the right machine number for an s390 elf32 file. */
652 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
653}
654
a85d7ed0
NC		 655/* s390 ELF linker hash table. */
656
657struct elf_s390_link_hash_table
658{
0451c93c 659 struct elf_link_hash_table elf;
a85d7ed0 660
0451c93c 661 /* Short-cuts to get to dynamic linker sections. */
470b557a 662 asection *irelifunc;
ec338859 663
69fc87f1
MS		 664 union {
665 bfd_signed_vma refcount;
666 bfd_vma offset;
667 } tls_ldm_got;
668
87d72d41
AM		 669 /* Small local sym cache. */
670 struct sym_cache sym_cache;
b4cbbe8f
AK		 671
672 /* Options passed from the linker. */
673 struct s390_elf_params *params;
0451c93c 674};
a85d7ed0
NC		 675
676/* Get the s390 ELF linker hash table from a link_info structure. */
677
ceada896
AA		 678#define elf_s390_hash_table(p) \
679 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
680 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
a85d7ed0 681
470b557a
AK		 682#define ELF64 1
683#include "elf-s390-common.c"
684
a85d7ed0
NC		 685/* Create an entry in an s390 ELF linker hash table. */
686
687static struct bfd_hash_entry *
2c3fc389
NC		 688link_hash_newfunc (struct bfd_hash_entry *entry,
689 struct bfd_hash_table *table,
690 const char *string)
a85d7ed0 691{
a85d7ed0
NC		 692 /* Allocate the structure if it has not already been allocated by a
693 subclass. */
0451c93c
MS		 694 if (entry == NULL)
695 {
696 entry = bfd_hash_allocate (table,
697 sizeof (struct elf_s390_link_hash_entry));
698 if (entry == NULL)
699 return entry;
700 }
a85d7ed0
NC		 701
702 /* Call the allocation method of the superclass. */
0451c93c
MS		 703 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
704 if (entry != NULL)
a85d7ed0 705 {
0451c93c
MS		 706 struct elf_s390_link_hash_entry *eh;
707
708 eh = (struct elf_s390_link_hash_entry *) entry;
709 eh->dyn_relocs = NULL;
5236c819 710 eh->gotplt_refcount = 0;
69fc87f1 711 eh->tls_type = GOT_UNKNOWN;
470b557a
AK		 712 eh->ifunc_resolver_address = 0;
713 eh->ifunc_resolver_section = NULL;
a85d7ed0
NC		 714 }
715
0451c93c 716 return entry;
a85d7ed0
NC		 717}
718
719/* Create an s390 ELF linker hash table. */
720
721static struct bfd_link_hash_table *
2c3fc389 722elf_s390_link_hash_table_create (bfd *abfd)
a85d7ed0
NC		 723{
724 struct elf_s390_link_hash_table *ret;
dc810e39 725 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
a85d7ed0 726
7bf52ea2 727 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
0451c93c 728 if (ret == NULL)
a85d7ed0
NC		 729 return NULL;
730
66eb6687 731 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 732 sizeof (struct elf_s390_link_hash_entry),
733 S390_ELF_DATA))
a85d7ed0 734 {
e2d34d7d 735 free (ret);
a85d7ed0
NC		 736 return NULL;
737 }
738
0451c93c
MS		 739 return &ret->elf.root;
740}
741
0451c93c
MS		 742/* Copy the extra info we tack onto an elf_link_hash_entry. */
743
744static void
2c3fc389
NC		 745elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
746 struct elf_link_hash_entry *dir,
747 struct elf_link_hash_entry *ind)
0451c93c
MS		 748{
749 struct elf_s390_link_hash_entry *edir, *eind;
750
751 edir = (struct elf_s390_link_hash_entry *) dir;
752 eind = (struct elf_s390_link_hash_entry *) ind;
753
754 if (eind->dyn_relocs != NULL)
755 {
756 if (edir->dyn_relocs != NULL)
757 {
00d8c7a9
AK		 758 struct elf_dyn_relocs **pp;
759 struct elf_dyn_relocs *p;
0451c93c 760
fcfa13d2 761 /* Add reloc counts against the indirect sym to the direct sym
0451c93c
MS		 762 list. Merge any entries against the same section. */
763 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
764 {
00d8c7a9 765 struct elf_dyn_relocs *q;
0451c93c
MS		 766
767 for (q = edir->dyn_relocs; q != NULL; q = q->next)
768 if (q->sec == p->sec)
769 {
770 q->pc_count += p->pc_count;
771 q->count += p->count;
772 *pp = p->next;
773 break;
774 }
775 if (q == NULL)
776 pp = &p->next;
777 }
778 *pp = edir->dyn_relocs;
779 }
780
781 edir->dyn_relocs = eind->dyn_relocs;
782 eind->dyn_relocs = NULL;
783 }
784
69fc87f1
MS		 785 if (ind->root.type == bfd_link_hash_indirect
786 && dir->got.refcount <= 0)
787 {
788 edir->tls_type = eind->tls_type;
789 eind->tls_type = GOT_UNKNOWN;
790 }
791
64285810
MS		 792 if (ELIMINATE_COPY_RELOCS
793 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 794 && dir->dynamic_adjusted)
795 {
796 /* If called to transfer flags for a weakdef during processing
797 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
798 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
e81830c5
AM		 799 if (dir->versioned != versioned_hidden)
800 dir->ref_dynamic |= ind->ref_dynamic;
f5385ebf
AM		 801 dir->ref_regular |= ind->ref_regular;
802 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
803 dir->needs_plt |= ind->needs_plt;
804 }
64285810 805 else
fcfa13d2 806 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 807}
a85d7ed0 808
69fc87f1 809static int
2c3fc389
NC		 810elf_s390_tls_transition (struct bfd_link_info *info,
811 int r_type,
812 int is_local)
69fc87f1 813{
0e1862bb 814 if (bfd_link_pic (info))
69fc87f1
MS		 815 return r_type;
816
817 switch (r_type)
818 {
819 case R_390_TLS_GD64:
820 case R_390_TLS_IE64:
821 if (is_local)
822 return R_390_TLS_LE64;
823 return R_390_TLS_IE64;
824 case R_390_TLS_GOTIE64:
825 if (is_local)
826 return R_390_TLS_LE64;
827 return R_390_TLS_GOTIE64;
828 case R_390_TLS_LDM64:
829 return R_390_TLS_LE64;
830 }
831
832 return r_type;
833}
834
a85d7ed0
NC		 835/* Look through the relocs for a section during the first phase, and
836 allocate space in the global offset table or procedure linkage
837 table. */
838
b34976b6 839static bfd_boolean
4dfe6ac6
NC		 840elf_s390_check_relocs (bfd *abfd,
841 struct bfd_link_info *info,
842 asection *sec,
843 const Elf_Internal_Rela *relocs)
a85d7ed0 844{
0451c93c 845 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 846 Elf_Internal_Shdr *symtab_hdr;
847 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 848 const Elf_Internal_Rela *rel;
849 const Elf_Internal_Rela *rel_end;
a85d7ed0 850 asection *sreloc;
5236c819 851 bfd_signed_vma *local_got_refcounts;
69fc87f1 852 int tls_type, old_tls_type;
a85d7ed0 853
0e1862bb 854 if (bfd_link_relocatable (info))
b34976b6 855 return TRUE;
a85d7ed0 856
0ffa91dd
NC		 857 BFD_ASSERT (is_s390_elf (abfd));
858
0451c93c 859 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 860 if (htab == NULL)
861 return FALSE;
862
0ffa91dd 863 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 864 sym_hashes = elf_sym_hashes (abfd);
5236c819 865 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 866
a85d7ed0
NC		 867 sreloc = NULL;
868
869 rel_end = relocs + sec->reloc_count;
870 for (rel = relocs; rel < rel_end; rel++)
871 {
69fc87f1 872 unsigned int r_type;
d42c267e 873 unsigned int r_symndx;
a85d7ed0 874 struct elf_link_hash_entry *h;
470b557a 875 Elf_Internal_Sym *isym;
a85d7ed0
NC		 876
877 r_symndx = ELF64_R_SYM (rel->r_info);
878
0451c93c
MS		 879 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
880 {
695344c0 881 /* xgettext:c-format */
871b3ab2 882 _bfd_error_handler (_("%pB: bad symbol index: %d"),
4eca0228 883 abfd, r_symndx);
b34976b6 884 return FALSE;
0451c93c
MS		 885 }
886
a85d7ed0 887 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK		 888 {
889 /* A local symbol. */
890 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
891 abfd, r_symndx);
892 if (isym == NULL)
893 return FALSE;
894
895 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
896 {
897 struct plt_entry *plt;
898
0cb79d69
AK		 899 if (htab->elf.dynobj == NULL)
900 htab->elf.dynobj = abfd;
901
470b557a
AK		 902 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
903 return FALSE;
904
905 if (local_got_refcounts == NULL)
906 {
907 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
908 return FALSE;
909 local_got_refcounts = elf_local_got_refcounts (abfd);
910 }
911 plt = elf_s390_local_plt (abfd);
912 plt[r_symndx].plt.refcount++;
913 }
914 h = NULL;
915 }
a85d7ed0 916 else
973a3492
L		 917 {
918 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
919 while (h->root.type == bfd_link_hash_indirect
920 || h->root.type == bfd_link_hash_warning)
921 h = (struct elf_link_hash_entry *) h->root.u.i.link;
922 }
a85d7ed0 923
5236c819
MS		 924 /* Create got section and local_got_refcounts array if they
925 are needed. */
69fc87f1
MS		 926 r_type = elf_s390_tls_transition (info,
927 ELF64_R_TYPE (rel->r_info),
928 h == NULL);
929 switch (r_type)
a85d7ed0
NC		 930 {
931 case R_390_GOT12:
947216bf 932 case R_390_GOT16:
bd1ea41b 933 case R_390_GOT20:
a85d7ed0
NC		 934 case R_390_GOT32:
935 case R_390_GOT64:
936 case R_390_GOTENT:
5236c819
MS		 937 case R_390_GOTPLT12:
938 case R_390_GOTPLT16:
bd1ea41b 939 case R_390_GOTPLT20:
5236c819
MS		 940 case R_390_GOTPLT32:
941 case R_390_GOTPLT64:
942 case R_390_GOTPLTENT:
69fc87f1
MS		 943 case R_390_TLS_GD64:
944 case R_390_TLS_GOTIE12:
bd1ea41b 945 case R_390_TLS_GOTIE20:
69fc87f1
MS		 946 case R_390_TLS_GOTIE64:
947 case R_390_TLS_IEENT:
948 case R_390_TLS_IE64:
949 case R_390_TLS_LDM64:
5236c819
MS		 950 if (h == NULL
951 && local_got_refcounts == NULL)
a85d7ed0 952 {
470b557a 953 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 954 return FALSE;
470b557a 955 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 956 }
470b557a 957
5236c819
MS		 958 /* Fall through. */
959 case R_390_GOTOFF16:
960 case R_390_GOTOFF32:
961 case R_390_GOTOFF64:
0451c93c
MS		 962 case R_390_GOTPC:
963 case R_390_GOTPCDBL:
f41345a7 964 if (htab->elf.sgot == NULL)
0451c93c
MS		 965 {
966 if (htab->elf.dynobj == NULL)
967 htab->elf.dynobj = abfd;
ce558b89 968 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
b34976b6 969 return FALSE;
0451c93c 970 }
5236c819
MS		 971 }
972
470b557a
AK		 973 if (h != NULL)
974 {
975 if (htab->elf.dynobj == NULL)
976 htab->elf.dynobj = abfd;
977 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
978 return FALSE;
979
980 /* Make sure an IFUNC symbol defined in a non-shared object
981 always gets a PLT slot. */
982 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
983 {
984 /* The symbol is called by the dynamic loader in order
985 to resolve the relocation. So it is in fact also
986 referenced. */
987 h->ref_regular = 1;
988 h->needs_plt = 1;
989 }
990 }
991
69fc87f1 992 switch (r_type)
5236c819 993 {
5236c819
MS		 994 case R_390_GOTPC:
995 case R_390_GOTPCDBL:
470b557a
AK		 996 /* These relocs do not need a GOT slot. They just load the
997 GOT pointer itself or address something else relative to
998 the GOT. Since the GOT pointer has been set up above we
999 are done. */
0451c93c 1000 break;
d47b13e0
AK		 1001 case R_390_GOTOFF16:
1002 case R_390_GOTOFF32:
1003 case R_390_GOTOFF64:
1004 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
1005 break;
1a0670f3 1006 /* Fall through. */
ec338859 1007
fb798c50 1008 case R_390_PLT12DBL:
947216bf 1009 case R_390_PLT16DBL:
fb798c50 1010 case R_390_PLT24DBL:
a85d7ed0
NC		 1011 case R_390_PLT32:
1012 case R_390_PLT32DBL:
1013 case R_390_PLT64:
5236c819
MS		 1014 case R_390_PLTOFF16:
1015 case R_390_PLTOFF32:
1016 case R_390_PLTOFF64:
a85d7ed0 1017 /* This symbol requires a procedure linkage table entry. We
947216bf
AM		 1018 actually build the entry in adjust_dynamic_symbol,
1019 because this might be a case of linking PIC code which is
1020 never referenced by a dynamic object, in which case we
1021 don't need to generate a procedure linkage table entry
1022 after all. */
ec338859 1023
a85d7ed0 1024 /* If this is a local symbol, we resolve it directly without
947216bf 1025 creating a procedure linkage table entry. */
5236c819
MS		 1026 if (h != NULL)
1027 {
f5385ebf 1028 h->needs_plt = 1;
5236c819
MS		 1029 h->plt.refcount += 1;
1030 }
1031 break;
ec338859 1032
5236c819
MS		 1033 case R_390_GOTPLT12:
1034 case R_390_GOTPLT16:
bd1ea41b 1035 case R_390_GOTPLT20:
5236c819
MS		 1036 case R_390_GOTPLT32:
1037 case R_390_GOTPLT64:
1038 case R_390_GOTPLTENT:
1039 /* This symbol requires either a procedure linkage table entry
1040 or an entry in the local got. We actually build the entry
1041 in adjust_dynamic_symbol because whether this is really a
1042 global reference can change and with it the fact if we have
1043 to create a plt entry or a local got entry. To be able to
1044 make a once global symbol a local one we have to keep track
1045 of the number of gotplt references that exist for this
1046 symbol. */
1047 if (h != NULL)
1048 {
1049 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1050 h->needs_plt = 1;
5236c819
MS		 1051 h->plt.refcount += 1;
1052 }
69fc87f1
MS		 1053 else
1054 local_got_refcounts[r_symndx] += 1;
1055 break;
1056
1057 case R_390_TLS_LDM64:
1058 htab->tls_ldm_got.refcount += 1;
1059 break;
1060
1061 case R_390_TLS_IE64:
1062 case R_390_TLS_GOTIE12:
bd1ea41b 1063 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1064 case R_390_TLS_GOTIE64:
1065 case R_390_TLS_IEENT:
0e1862bb 1066 if (bfd_link_pic (info))
69fc87f1
MS		 1067 info->flags |= DF_STATIC_TLS;
1068 /* Fall through */
1069
1070 case R_390_GOT12:
26e41594 1071 case R_390_GOT16:
bd1ea41b 1072 case R_390_GOT20:
69fc87f1
MS		 1073 case R_390_GOT32:
1074 case R_390_GOT64:
1075 case R_390_GOTENT:
1076 case R_390_TLS_GD64:
1077 /* This symbol requires a global offset table entry. */
1078 switch (r_type)
1079 {
1080 default:
1081 case R_390_GOT12:
1082 case R_390_GOT16:
bd1ea41b 1083 case R_390_GOT20:
69fc87f1
MS		 1084 case R_390_GOT32:
1085 case R_390_GOTENT:
1086 tls_type = GOT_NORMAL;
1087 break;
1088 case R_390_TLS_GD64:
1089 tls_type = GOT_TLS_GD;
1090 break;
1091 case R_390_TLS_IE64:
1092 case R_390_TLS_GOTIE64:
1093 tls_type = GOT_TLS_IE;
1094 break;
1095 case R_390_TLS_GOTIE12:
bd1ea41b 1096 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1097 case R_390_TLS_IEENT:
1098 tls_type = GOT_TLS_IE_NLT;
1099 break;
1100 }
1101
1102 if (h != NULL)
1103 {
1104 h->got.refcount += 1;
1105 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1106 }
5236c819
MS		 1107 else
1108 {
1109 local_got_refcounts[r_symndx] += 1;
69fc87f1 1110 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
5236c819 1111 }
69fc87f1
MS		 1112 /* If a TLS symbol is accessed using IE at least once,
1113 there is no point to use dynamic model for it. */
1114 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1115 {
1116 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1117 {
4eca0228 1118 _bfd_error_handler
695344c0 1119 /* xgettext:c-format */
871b3ab2 1120 (_("%pB: `%s' accessed both as normal and thread local symbol"),
d003868e 1121 abfd, h->root.root.string);
69fc87f1
MS		 1122 return FALSE;
1123 }
1124 if (old_tls_type > tls_type)
1125 tls_type = old_tls_type;
1126 }
1127
1128 if (old_tls_type != tls_type)
1129 {
1130 if (h != NULL)
1131 elf_s390_hash_entry (h)->tls_type = tls_type;
1132 else
1133 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1134 }
1135
1136 if (r_type != R_390_TLS_IE64)
1137 break;
1138 /* Fall through */
1139
1140 case R_390_TLS_LE64:
e00d879a
AK		 1141 /* For static linking and executables this reloc will be
1142 calculated at linktime otherwise a TLS_TPOFF runtime
1143 reloc will be generated. */
0e1862bb 1144 if (r_type == R_390_TLS_LE64 && bfd_link_pie (info))
e00d879a
AK		 1145 break;
1146
0e1862bb 1147 if (!bfd_link_pic (info))
69fc87f1
MS		 1148 break;
1149 info->flags |= DF_STATIC_TLS;
1150 /* Fall through */
ec338859 1151
947216bf
AM		 1152 case R_390_8:
1153 case R_390_16:
a85d7ed0
NC		 1154 case R_390_32:
1155 case R_390_64:
fb798c50 1156 case R_390_PC12DBL:
947216bf
AM		 1157 case R_390_PC16:
1158 case R_390_PC16DBL:
fb798c50 1159 case R_390_PC24DBL:
a85d7ed0
NC		 1160 case R_390_PC32:
1161 case R_390_PC32DBL:
1162 case R_390_PC64:
99ba5125 1163 if (h != NULL && bfd_link_executable (info))
0451c93c
MS		 1164 {
1165 /* If this reloc is in a read-only section, we might
1166 need a copy reloc. We can't check reliably at this
1167 stage whether the section is read-only, as input
1168 sections have not yet been mapped to output sections.
1169 Tentatively set the flag for now, and correct in
1170 adjust_dynamic_symbol. */
f5385ebf 1171 h->non_got_ref = 1;
ec338859 1172
0e1862bb 1173 if (!bfd_link_pic (info))
470b557a
AK		 1174 {
1175 /* We may need a .plt entry if the function this reloc
1176 refers to is in a shared lib. */
1177 h->plt.refcount += 1;
1178 }
0451c93c 1179 }
ec338859 1180
a85d7ed0 1181 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1182 against a global symbol, or a non PC relative reloc
1183 against a local symbol, then we need to copy the reloc
1184 into the shared library. However, if we are linking with
1185 -Bsymbolic, we do not need to copy a reloc against a
1186 global symbol which is defined in an object we are
1187 including in the link (i.e., DEF_REGULAR is set). At
1188 this point we have not seen all the input files, so it is
1189 possible that DEF_REGULAR is not set now but will be set
1190 later (it is never cleared). In case of a weak definition,
1191 DEF_REGULAR may be cleared later by a strong definition in
1192 a shared library. We account for that possibility below by
1193 storing information in the relocs_copied field of the hash
1194 table entry. A similar situation occurs when creating
1195 shared libraries and symbol visibility changes render the
1196 symbol local.
1197
1198 If on the other hand, we are creating an executable, we
1199 may need to keep relocations for symbols satisfied by a
1200 dynamic library if we manage to avoid copy relocs for the
1201 symbol. */
0e1862bb 1202 if ((bfd_link_pic (info)
0451c93c
MS		 1203 && (sec->flags & SEC_ALLOC) != 0
1204 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1205 && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1206 && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1207 && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL
0451c93c
MS		 1208 && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1209 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1210 && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1211 || (h != NULL
8c21ca21 1212 && (! SYMBOLIC_BIND (info, h)
0451c93c 1213 || h->root.type == bfd_link_hash_defweak
f5385ebf 1214 || !h->def_regular))))
64285810 1215 || (ELIMINATE_COPY_RELOCS
0e1862bb 1216 && !bfd_link_pic (info)
0451c93c
MS		 1217 && (sec->flags & SEC_ALLOC) != 0
1218 && h != NULL
1219 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1220 || !h->def_regular)))
a85d7ed0 1221 {
00d8c7a9
AK		 1222 struct elf_dyn_relocs *p;
1223 struct elf_dyn_relocs **head;
ec338859 1224
0451c93c
MS		 1225 /* We must copy these reloc types into the output file.
1226 Create a reloc section in dynobj and make room for
1227 this reloc. */
a85d7ed0
NC		 1228 if (sreloc == NULL)
1229 {
440e9cd2
AK		 1230 if (htab->elf.dynobj == NULL)
1231 htab->elf.dynobj = abfd;
1232
83bac4b0
NC		 1233 sreloc = _bfd_elf_make_dynamic_reloc_section
1234 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
ec338859 1235
a85d7ed0 1236 if (sreloc == NULL)
83bac4b0 1237 return FALSE;
a85d7ed0 1238 }
ec338859 1239
0451c93c
MS		 1240 /* If this is a global symbol, we count the number of
1241 relocations we need for this symbol. */
1242 if (h != NULL)
a85d7ed0 1243 {
ec338859 1244 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS		 1245 }
1246 else
1247 {
ec338859
AM		 1248 /* Track dynamic relocs needed for local syms too.
1249 We really need local syms available to do this
1250 easily. Oh well. */
ec338859 1251 asection *s;
6edfbbad
DJ		 1252 void *vpp;
1253
87d72d41
AM		 1254 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1255 abfd, r_symndx);
1256 if (isym == NULL)
b34976b6 1257 return FALSE;
ec338859 1258
87d72d41
AM		 1259 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1260 if (s == NULL)
1261 s = sec;
1262
6edfbbad 1263 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1264 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1265 }
1266
1267 p = *head;
1268 if (p == NULL || p->sec != sec)
1269 {
1270 bfd_size_type amt = sizeof *p;
00d8c7a9 1271 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1272 bfd_alloc (htab->elf.dynobj, amt));
1273 if (p == NULL)
b34976b6 1274 return FALSE;
ec338859
AM		 1275 p->next = *head;
1276 *head = p;
1277 p->sec = sec;
1278 p->count = 0;
1279 p->pc_count = 0;
a85d7ed0 1280 }
ec338859
AM		 1281
1282 p->count += 1;
1283 if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
fb798c50
AK		 1284 || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL
1285 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
ec338859
AM		 1286 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1287 || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1288 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1289 || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1290 p->pc_count += 1;
a85d7ed0 1291 }
a85d7ed0 1292 break;
ec338859 1293
a85d7ed0
NC		 1294 /* This relocation describes the C++ object vtable hierarchy.
1295 Reconstruct it for later use during GC. */
947216bf 1296 case R_390_GNU_VTINHERIT:
c152c796 1297 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 1298 return FALSE;
947216bf 1299 break;
ec338859 1300
a85d7ed0
NC		 1301 /* This relocation describes which C++ vtable entries are actually
1302 used. Record for later use during GC. */
947216bf 1303 case R_390_GNU_VTENTRY:
d17e0c6e
JB		 1304 BFD_ASSERT (h != NULL);
1305 if (h != NULL
1306 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 1307 return FALSE;
947216bf 1308 break;
ec338859 1309
a85d7ed0
NC		 1310 default:
1311 break;
1312 }
1313 }
1314
b34976b6 1315 return TRUE;
a85d7ed0
NC		 1316}
1317
1318/* Return the section that should be marked against GC for a given
1319 relocation. */
1320
1321static asection *
07adf181
AM		 1322elf_s390_gc_mark_hook (asection *sec,
1323 struct bfd_link_info *info,
1324 Elf_Internal_Rela *rel,
1325 struct elf_link_hash_entry *h,
1326 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1327{
1328 if (h != NULL)
07adf181
AM		 1329 switch (ELF64_R_TYPE (rel->r_info))
1330 {
1331 case R_390_GNU_VTINHERIT:
1332 case R_390_GNU_VTENTRY:
1333 return NULL;
1334 }
1335
1336 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0
NC		 1337}
1338
5236c819
MS		 1339/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1340 entry but we found we will not create any. Called when we find we will
1341 not have any PLT for this symbol, by for example
1342 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1343 or elf_s390_size_dynamic_sections if no dynamic sections will be
1344 created (we're only linking static objects). */
1345
1346static void
2c3fc389 1347elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1348{
1349 if (h->elf.root.type == bfd_link_hash_warning)
1350 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1351
1352 if (h->gotplt_refcount <= 0)
1353 return;
1354
1355 /* We simply add the number of gotplt references to the number
1356 * of got references for this symbol. */
1357 h->elf.got.refcount += h->gotplt_refcount;
1358 h->gotplt_refcount = -1;
1359}
1360
63c1f59d
AM		 1361/* Find dynamic relocs for H that apply to read-only sections. */
1362
1363static asection *
1364readonly_dynrelocs (struct elf_link_hash_entry *h)
1365{
1366 struct elf_dyn_relocs *p;
1367
1368 for (p = elf_s390_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
1369 {
1370 asection *s = p->sec->output_section;
1371
1372 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1373 return p->sec;
1374 }
1375 return NULL;
1376}
1377
a85d7ed0
NC		 1378/* Adjust a symbol defined by a dynamic object and referenced by a
1379 regular object. The current definition is in some section of the
1380 dynamic object, but we're not including those sections. We have to
1381 change the definition to something the rest of the link can
1382 understand. */
1383
b34976b6 1384static bfd_boolean
4dfe6ac6
NC		 1385elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1386 struct elf_link_hash_entry *h)
a85d7ed0 1387{
0451c93c 1388 struct elf_s390_link_hash_table *htab;
5474d94f 1389 asection *s, *srel;
a85d7ed0 1390
470b557a
AK		 1391 /* STT_GNU_IFUNC symbol must go through PLT. */
1392 if (s390_is_ifunc_symbol_p (h))
d8ee9e44
AK		 1393 {
1394 /* All local STT_GNU_IFUNC references must be treated as local
1395 calls via local PLT. */
1396 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1397 {
1398 bfd_size_type pc_count = 0, count = 0;
1399 struct elf_dyn_relocs **pp;
1400 struct elf_s390_link_hash_entry *eh;
1401 struct elf_dyn_relocs *p;
1402
1403 eh = (struct elf_s390_link_hash_entry *) h;
1404 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1405 {
1406 pc_count += p->pc_count;
1407 p->count -= p->pc_count;
1408 p->pc_count = 0;
1409 count += p->count;
1410 if (p->count == 0)
1411 *pp = p->next;
1412 else
1413 pp = &p->next;
1414 }
1415
1416 if (pc_count || count)
1417 {
1418 h->needs_plt = 1;
1419 h->non_got_ref = 1;
1420 if (h->plt.refcount <= 0)
1421 h->plt.refcount = 1;
1422 else
1423 h->plt.refcount += 1;
1424 }
1425 }
1426
1427 if (h->plt.refcount <= 0)
1428 {
1429 h->plt.offset = (bfd_vma) -1;
1430 h->needs_plt = 0;
1431 }
1432 return TRUE;
1433 }
470b557a 1434
a85d7ed0
NC		 1435 /* If this is a function, put it in the procedure linkage table. We
1436 will fill in the contents of the procedure linkage table later
cedb70c5 1437 (although we could actually do it here). */
a85d7ed0 1438 if (h->type == STT_FUNC
f5385ebf 1439 || h->needs_plt)
a85d7ed0 1440 {
0451c93c 1441 if (h->plt.refcount <= 0
8c21ca21 1442 || SYMBOL_CALLS_LOCAL (info, h)
10e7c045 1443 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a85d7ed0
NC		 1444 {
1445 /* This case can occur if we saw a PLT32 reloc in an input
947216bf
AM		 1446 file, but the symbol was never referred to by a dynamic
1447 object, or if all references were garbage collected. In
0451c93c
MS		 1448 such a case, we don't actually need to build a procedure
1449 linkage table, and we can just do a PC32 reloc instead. */
a85d7ed0 1450 h->plt.offset = (bfd_vma) -1;
f5385ebf 1451 h->needs_plt = 0;
5236c819 1452 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1453 }
1454
b34976b6 1455 return TRUE;
a85d7ed0 1456 }
bbd7ec4a 1457 else
0451c93c
MS		 1458 /* It's possible that we incorrectly decided a .plt reloc was
1459 needed for an R_390_PC32 reloc to a non-function sym in
1460 check_relocs. We can't decide accurately between function and
1461 non-function syms in check-relocs; Objects loaded later in
1462 the link may change h->type. So fix it now. */
bbd7ec4a 1463 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1464
1465 /* If this is a weak symbol, and there is a real definition, the
1466 processor independent code will have arranged for us to see the
1467 real definition first, and we can just use the same value. */
60d67dc8 1468 if (h->is_weakalias)
a85d7ed0 1469 {
60d67dc8
AM		 1470 struct elf_link_hash_entry *def = weakdef (h);
1471 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1472 h->root.u.def.section = def->root.u.def.section;
1473 h->root.u.def.value = def->root.u.def.value;
64285810 1474 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
60d67dc8 1475 h->non_got_ref = def->non_got_ref;
b34976b6 1476 return TRUE;
a85d7ed0
NC		 1477 }
1478
1479 /* This is a reference to a symbol defined by a dynamic object which
1480 is not a function. */
1481
1482 /* If we are creating a shared library, we must presume that the
1483 only references to the symbol are via the global offset table.
1484 For such cases we need not do anything here; the relocations will
1485 be handled correctly by relocate_section. */
0e1862bb 1486 if (bfd_link_pic (info))
b34976b6 1487 return TRUE;
a85d7ed0
NC		 1488
1489 /* If there are no references to this symbol that do not use the
1490 GOT, we don't need to generate a copy reloc. */
f5385ebf 1491 if (!h->non_got_ref)
b34976b6 1492 return TRUE;
a85d7ed0 1493
0451c93c
MS		 1494 /* If -z nocopyreloc was given, we won't generate them either. */
1495 if (info->nocopyreloc)
1496 {
f5385ebf 1497 h->non_got_ref = 0;
b34976b6 1498 return TRUE;
0451c93c
MS		 1499 }
1500
3bf083ed
AM		 1501 /* If we don't find any dynamic relocs in read-only sections, then
1502 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1503 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
0451c93c 1504 {
3bf083ed
AM		 1505 h->non_got_ref = 0;
1506 return TRUE;
0451c93c
MS		 1507 }
1508
a85d7ed0
NC		 1509 /* We must allocate the symbol in our .dynbss section, which will
1510 become part of the .bss section of the executable. There will be
1511 an entry for this symbol in the .dynsym section. The dynamic
1512 object will contain position independent code, so all references
1513 from the dynamic object to this symbol will go through the global
1514 offset table. The dynamic linker will use the .dynsym entry to
1515 determine the address it must put in the global offset table, so
1516 both the dynamic object and the regular object will refer to the
1517 same memory location for the variable. */
1518
0451c93c 1519 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1520 if (htab == NULL)
1521 return FALSE;
a85d7ed0 1522
0451c93c
MS		 1523 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1524 copy the initial value out of the dynamic object and into the
1525 runtime process image. */
5474d94f
AM		 1526 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1527 {
1528 s = htab->elf.sdynrelro;
1529 srel = htab->elf.sreldynrelro;
1530 }
1531 else
1532 {
1533 s = htab->elf.sdynbss;
1534 srel = htab->elf.srelbss;
1535 }
1d7e9d18 1536 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1537 {
5474d94f 1538 srel->size += sizeof (Elf64_External_Rela);
f5385ebf 1539 h->needs_copy = 1;
a85d7ed0
NC		 1540 }
1541
6cabe1ea 1542 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a85d7ed0
NC		 1543}
1544
0451c93c
MS		 1545/* Allocate space in .plt, .got and associated reloc sections for
1546 dynamic relocs. */
1547
b34976b6 1548static bfd_boolean
4dfe6ac6
NC		 1549allocate_dynrelocs (struct elf_link_hash_entry *h,
1550 void * inf)
0451c93c
MS		 1551{
1552 struct bfd_link_info *info;
1553 struct elf_s390_link_hash_table *htab;
470b557a 1554 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1555 struct elf_dyn_relocs *p;
0451c93c 1556
e92d460e 1557 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1558 return TRUE;
0451c93c
MS		 1559
1560 info = (struct bfd_link_info *) inf;
1561 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1562 if (htab == NULL)
1563 return FALSE;
0451c93c 1564
470b557a
AK		 1565 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1566 here if it is defined and referenced in a non-shared object. */
1567 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
61643fba 1568 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
470b557a
AK		 1569 else if (htab->elf.dynamic_sections_created
1570 && h->plt.refcount > 0)
0451c93c
MS		 1571 {
1572 /* Make sure this symbol is output as a dynamic symbol.
1573 Undefined weak syms won't yet be marked as dynamic. */
1574 if (h->dynindx == -1
f5385ebf 1575 && !h->forced_local)
0451c93c 1576 {
c152c796 1577 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1578 return FALSE;
0451c93c
MS		 1579 }
1580
0e1862bb 1581 if (bfd_link_pic (info)
4ec72bde 1582 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1583 {
f41345a7 1584 asection *s = htab->elf.splt;
0451c93c
MS		 1585
1586 /* If this is the first .plt entry, make room for the special
1587 first entry. */
eea6121a
AM		 1588 if (s->size == 0)
1589 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1590
eea6121a 1591 h->plt.offset = s->size;
0451c93c
MS		 1592
1593 /* If this symbol is not defined in a regular file, and we are
1594 not generating a shared library, then set the symbol to this
1595 location in the .plt. This is required to make function
1596 pointers compare as equal between the normal executable and
1597 the shared library. */
0e1862bb 1598 if (! bfd_link_pic (info)
f5385ebf 1599 && !h->def_regular)
0451c93c
MS		 1600 {
1601 h->root.u.def.section = s;
1602 h->root.u.def.value = h->plt.offset;
1603 }
ec338859 1604
0451c93c 1605 /* Make room for this entry. */
eea6121a 1606 s->size += PLT_ENTRY_SIZE;
ec338859 1607
0451c93c
MS		 1608 /* We also need to make an entry in the .got.plt section, which
1609 will be placed in the .got section by the linker script. */
f41345a7 1610 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1611
1612 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1613 htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 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 }
1622 else
1623 {
1624 h->plt.offset = (bfd_vma) -1;
f5385ebf 1625 h->needs_plt = 0;
5236c819 1626 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1627 }
1628
69fc87f1
MS		 1629 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1630 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1631 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1632 we can save the dynamic TLS relocation. */
1633 if (h->got.refcount > 0
0e1862bb 1634 && !bfd_link_pic (info)
69fc87f1
MS		 1635 && h->dynindx == -1
1636 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1637 {
1638 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1639 /* For the GOTIE access without a literal pool entry the offset has
1640 to be stored somewhere. The immediate value in the instruction
1641 is not bit enough so the value is stored in the got. */
1642 {
f41345a7
AK		 1643 h->got.offset = htab->elf.sgot->size;
1644 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1645 }
1646 else
1647 h->got.offset = (bfd_vma) -1;
1648 }
1649 else if (h->got.refcount > 0)
0451c93c
MS		 1650 {
1651 asection *s;
b34976b6 1652 bfd_boolean dyn;
69fc87f1 1653 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1654
1655 /* Make sure this symbol is output as a dynamic symbol.
1656 Undefined weak syms won't yet be marked as dynamic. */
1657 if (h->dynindx == -1
f5385ebf 1658 && !h->forced_local)
0451c93c 1659 {
c152c796 1660 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1661 return FALSE;
0451c93c
MS		 1662 }
1663
f41345a7 1664 s = htab->elf.sgot;
eea6121a
AM		 1665 h->got.offset = s->size;
1666 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1667 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1668 if (tls_type == GOT_TLS_GD)
eea6121a 1669 s->size += GOT_ENTRY_SIZE;
0451c93c 1670 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1671 /* R_390_TLS_IE64 needs one dynamic relocation,
1672 R_390_TLS_GD64 needs one if local symbol and two if global. */
1673 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1674 || tls_type >= GOT_TLS_IE)
f41345a7 1675 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1 1676 else if (tls_type == GOT_TLS_GD)
f41345a7 1677 htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
10e7c045 1678 else if (!UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
0e1862bb 1679 && (bfd_link_pic (info)
82058a73 1680 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1681 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1682 }
1683 else
1684 h->got.offset = (bfd_vma) -1;
1685
0451c93c 1686 if (eh->dyn_relocs == NULL)
b34976b6 1687 return TRUE;
0451c93c
MS		 1688
1689 /* In the shared -Bsymbolic case, discard space allocated for
1690 dynamic pc-relative relocs against symbols which turn out to be
1691 defined in regular objects. For the normal shared case, discard
1692 space for pc-relative relocs that have become local due to symbol
1693 visibility changes. */
1694
0e1862bb 1695 if (bfd_link_pic (info))
0451c93c 1696 {
8c21ca21 1697 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1698 {
00d8c7a9 1699 struct elf_dyn_relocs **pp;
0451c93c
MS		 1700
1701 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1702 {
1703 p->count -= p->pc_count;
1704 p->pc_count = 0;
1705 if (p->count == 0)
1706 *pp = p->next;
1707 else
1708 pp = &p->next;
1709 }
1710 }
82058a73
MS		 1711
1712 /* Also discard relocs on undefined weak syms with non-default
1713 visibility. */
22d606e9 1714 if (eh->dyn_relocs != NULL
82058a73 1715 && h->root.type == bfd_link_hash_undefweak)
22d606e9 1716 {
b27bb18f
L		 1717 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1718 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
22d606e9
AM		 1719 eh->dyn_relocs = NULL;
1720
1721 /* Make sure undefined weak symbols are output as a dynamic
1722 symbol in PIEs. */
1723 else if (h->dynindx == -1
1724 && !h->forced_local)
1725 {
1726 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1727 return FALSE;
1728 }
1729 }
0451c93c 1730 }
64285810 1731 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1732 {
1733 /* For the non-shared case, discard space for relocs against
1734 symbols which turn out to need copy relocs or are not
1735 dynamic. */
1736
f5385ebf
AM		 1737 if (!h->non_got_ref
1738 && ((h->def_dynamic
1739 && !h->def_regular)
0451c93c
MS		 1740 || (htab->elf.dynamic_sections_created
1741 && (h->root.type == bfd_link_hash_undefweak
1742 || h->root.type == bfd_link_hash_undefined))))
1743 {
1744 /* Make sure this symbol is output as a dynamic symbol.
1745 Undefined weak syms won't yet be marked as dynamic. */
1746 if (h->dynindx == -1
f5385ebf 1747 && !h->forced_local)
0451c93c 1748 {
c152c796 1749 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1750 return FALSE;
0451c93c
MS		 1751 }
1752
1753 /* If that succeeded, we know we'll be keeping all the
1754 relocs. */
1755 if (h->dynindx != -1)
1756 goto keep;
1757 }
1758
1759 eh->dyn_relocs = NULL;
1760
ec338859 1761 keep: ;
0451c93c
MS		 1762 }
1763
1764 /* Finally, allocate space. */
1765 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1766 {
1767 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1768 sreloc->size += p->count * sizeof (Elf64_External_Rela);
0451c93c
MS		 1769 }
1770
b34976b6 1771 return TRUE;
0451c93c
MS		 1772}
1773
63c1f59d
AM		 1774/* Set DF_TEXTREL if we find any dynamic relocs that apply to
1775 read-only sections. */
0451c93c 1776
b34976b6 1777static bfd_boolean
63c1f59d 1778maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
0451c93c 1779{
63c1f59d 1780 asection *sec;
0451c93c 1781
63c1f59d
AM		 1782 if (h->root.type == bfd_link_hash_indirect)
1783 return TRUE;
0451c93c 1784
63c1f59d
AM		 1785 sec = readonly_dynrelocs (h);
1786 if (sec != NULL)
1787 {
1788 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
0451c93c 1789
63c1f59d
AM		 1790 info->flags |= DF_TEXTREL;
1791 info->callbacks->minfo
c1c8c1ef 1792 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
63c1f59d 1793 sec->owner, h->root.root.string, sec);
0451c93c 1794
63c1f59d
AM		 1795 /* Not an error, just cut short the traversal. */
1796 return FALSE;
0451c93c 1797 }
b34976b6 1798 return TRUE;
0451c93c
MS		 1799}
1800
a85d7ed0
NC		 1801/* Set the sizes of the dynamic sections. */
1802
b34976b6 1803static bfd_boolean
4dfe6ac6
NC		 1804elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1805 struct bfd_link_info *info)
a85d7ed0 1806{
0451c93c 1807 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1808 bfd *dynobj;
1809 asection *s;
b34976b6 1810 bfd_boolean relocs;
0451c93c 1811 bfd *ibfd;
a85d7ed0 1812
0451c93c 1813 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1814 if (htab == NULL)
1815 return FALSE;
1816
0451c93c
MS		 1817 dynobj = htab->elf.dynobj;
1818 if (dynobj == NULL)
1819 abort ();
a85d7ed0 1820
0451c93c 1821 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1822 {
1823 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 1824 if (bfd_link_executable (info) && !info->nointerp)
a85d7ed0 1825 {
3d4d4302 1826 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 1827 if (s == NULL)
1828 abort ();
eea6121a 1829 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 1830 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1831 }
1832 }
a85d7ed0 1833
0451c93c
MS		 1834 /* Set up .got offsets for local syms, and space for local dynamic
1835 relocs. */
c72f2fb2 1836 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a85d7ed0 1837 {
0451c93c
MS		 1838 bfd_signed_vma *local_got;
1839 bfd_signed_vma *end_local_got;
69fc87f1 1840 char *local_tls_type;
0451c93c
MS		 1841 bfd_size_type locsymcount;
1842 Elf_Internal_Shdr *symtab_hdr;
1843 asection *srela;
470b557a
AK		 1844 struct plt_entry *local_plt;
1845 unsigned int i;
a85d7ed0 1846
0ffa91dd 1847 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 1848 continue;
1849
0451c93c 1850 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 1851 {
00d8c7a9 1852 struct elf_dyn_relocs *p;
0451c93c 1853
6edfbbad 1854 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 1855 {
ec338859
AM		 1856 if (!bfd_is_abs_section (p->sec)
1857 && bfd_is_abs_section (p->sec->output_section))
1858 {
1859 /* Input section has been discarded, either because
1860 it is a copy of a linkonce section or due to
1861 linker script /DISCARD/, so we'll be discarding
1862 the relocs too. */
1863 }
248866a8 1864 else if (p->count != 0)
ec338859
AM		 1865 {
1866 srela = elf_section_data (p->sec)->sreloc;
eea6121a 1867 srela->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 1868 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1869 info->flags |= DF_TEXTREL;
ec338859 1870 }
a85d7ed0
NC		 1871 }
1872 }
0451c93c
MS		 1873
1874 local_got = elf_local_got_refcounts (ibfd);
1875 if (!local_got)
1876 continue;
1877
0ffa91dd 1878 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 1879 locsymcount = symtab_hdr->sh_info;
1880 end_local_got = local_got + locsymcount;
69fc87f1 1881 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 1882 s = htab->elf.sgot;
1883 srela = htab->elf.srelgot;
69fc87f1 1884 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 1885 {
0451c93c 1886 if (*local_got > 0)
a85d7ed0 1887 {
eea6121a
AM		 1888 *local_got = s->size;
1889 s->size += GOT_ENTRY_SIZE;
69fc87f1 1890 if (*local_tls_type == GOT_TLS_GD)
eea6121a 1891 s->size += GOT_ENTRY_SIZE;
0e1862bb 1892 if (bfd_link_pic (info))
eea6121a 1893 srela->size += sizeof (Elf64_External_Rela);
a85d7ed0
NC		 1894 }
1895 else
0451c93c 1896 *local_got = (bfd_vma) -1;
a85d7ed0 1897 }
470b557a
AK		 1898
1899 local_plt = elf_s390_local_plt (ibfd);
1900 for (i = 0; i < symtab_hdr->sh_info; i++)
1901 {
1902 if (local_plt[i].plt.refcount > 0)
1903 {
1904 local_plt[i].plt.offset = htab->elf.iplt->size;
1905 htab->elf.iplt->size += PLT_ENTRY_SIZE;
1906 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
1907 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
1908 }
1909 else
1910 local_plt[i].plt.offset = (bfd_vma) -1;
1911 }
0451c93c
MS		 1912 }
1913
69fc87f1
MS		 1914 if (htab->tls_ldm_got.refcount > 0)
1915 {
1916 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
1917 relocs. */
f41345a7
AK		 1918 htab->tls_ldm_got.offset = htab->elf.sgot->size;
1919 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
1920 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1
MS		 1921 }
1922 else
1923 htab->tls_ldm_got.offset = -1;
1924
0451c93c
MS		 1925 /* Allocate global sym .plt and .got entries, and space for global
1926 sym dynamic relocs. */
2c3fc389 1927 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 1928
1929 /* We now have determined the sizes of the various dynamic sections.
1930 Allocate memory for them. */
b34976b6 1931 relocs = FALSE;
0451c93c
MS		 1932 for (s = dynobj->sections; s != NULL; s = s->next)
1933 {
1934 if ((s->flags & SEC_LINKER_CREATED) == 0)
1935 continue;
1936
f41345a7
AK		 1937 if (s == htab->elf.splt
1938 || s == htab->elf.sgot
1939 || s == htab->elf.sgotplt
9d19e4fd 1940 || s == htab->elf.sdynbss
5474d94f 1941 || s == htab->elf.sdynrelro
470b557a
AK		 1942 || s == htab->elf.iplt
1943 || s == htab->elf.igotplt
1944 || s == htab->irelifunc)
0451c93c
MS		 1945 {
1946 /* Strip this section if we don't need it; see the
1947 comment below. */
1948 }
0112cd26 1949 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 1950 {
f41345a7 1951 if (s->size != 0 && s != htab->elf.srelplt)
b34976b6 1952 relocs = TRUE;
ec338859 1953
0451c93c
MS		 1954 /* We use the reloc_count field as a counter if we need
1955 to copy relocs into the output file. */
1956 s->reloc_count = 0;
1957 }
1958 else
a85d7ed0
NC		 1959 {
1960 /* It's not one of our sections, so don't allocate space. */
1961 continue;
1962 }
1963
eea6121a 1964 if (s->size == 0)
a85d7ed0 1965 {
0451c93c
MS		 1966 /* If we don't need this section, strip it from the
1967 output file. This is to handle .rela.bss and
1968 .rela.plt. We must create it in
1969 create_dynamic_sections, because it must be created
1970 before the linker maps input sections to output
1971 sections. The linker does that before
1972 adjust_dynamic_symbol is called, and it is that
1973 function which decides whether anything needs to go
1974 into these sections. */
1975
8423293d 1976 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 1977 continue;
1978 }
1979
c456f082
AM		 1980 if ((s->flags & SEC_HAS_CONTENTS) == 0)
1981 continue;
1982
0451c93c
MS		 1983 /* Allocate memory for the section contents. We use bfd_zalloc
1984 here in case unused entries are not reclaimed before the
1985 section's contents are written out. This should not happen,
1986 but this way if it does, we get a R_390_NONE reloc instead
1987 of garbage. */
eea6121a 1988 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 1989 if (s->contents == NULL)
b34976b6 1990 return FALSE;
a85d7ed0
NC		 1991 }
1992
0451c93c 1993 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1994 {
1995 /* Add some entries to the .dynamic section. We fill in the
1996 values later, in elf_s390_finish_dynamic_sections, but we
1997 must add the entries now so that we get the correct size for
1998 the .dynamic section. The DT_DEBUG entry is filled in by the
1999 dynamic linker and used by the debugger. */
dc810e39 2000#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2001 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2002
0e1862bb 2003 if (bfd_link_executable (info))
a85d7ed0 2004 {
dc810e39 2005 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2006 return FALSE;
a85d7ed0
NC		 2007 }
2008
f41345a7 2009 if (htab->elf.splt->size != 0)
a85d7ed0 2010 {
dc810e39
AM		 2011 if (!add_dynamic_entry (DT_PLTGOT, 0)
2012 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2013 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2014 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2015 return FALSE;
a85d7ed0
NC		 2016 }
2017
2018 if (relocs)
947216bf
AM		 2019 {
2020 if (!add_dynamic_entry (DT_RELA, 0)
2021 || !add_dynamic_entry (DT_RELASZ, 0)
2022 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 2023 return FALSE;
ec338859 2024
0451c93c
MS		 2025 /* If any dynamic relocs apply to a read-only section,
2026 then we need a DT_TEXTREL entry. */
248866a8 2027 if ((info->flags & DF_TEXTREL) == 0)
63c1f59d 2028 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
ec338859 2029
0451c93c
MS		 2030 if ((info->flags & DF_TEXTREL) != 0)
2031 {
2032 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2033 return FALSE;
0451c93c 2034 }
a85d7ed0
NC		 2035 }
2036 }
dc810e39 2037#undef add_dynamic_entry
a85d7ed0 2038
b34976b6 2039 return TRUE;
a85d7ed0
NC		 2040}
2041
69fc87f1
MS		 2042/* Return the base VMA address which should be subtracted from real addresses
2043 when resolving @dtpoff relocation.
2044 This is PT_TLS segment p_vaddr. */
2045
2046static bfd_vma
2c3fc389 2047dtpoff_base (struct bfd_link_info *info)
69fc87f1 2048{
e1918d23
AM		 2049 /* If tls_sec is NULL, we should have signalled an error already. */
2050 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2051 return 0;
e1918d23 2052 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2053}
2054
2055/* Return the relocation value for @tpoff relocation
2056 if STT_TLS virtual address is ADDRESS. */
2057
2058static bfd_vma
2c3fc389 2059tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2060{
e1918d23 2061 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2062
e1918d23
AM		 2063 /* If tls_sec is NULL, we should have signalled an error already. */
2064 if (htab->tls_sec == NULL)
69fc87f1 2065 return 0;
e1918d23 2066 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2067}
2068
2069/* Complain if TLS instruction relocation is against an invalid
2070 instruction. */
2071
2072static void
2c3fc389
NC		 2073invalid_tls_insn (bfd *input_bfd,
2074 asection *input_section,
2075 Elf_Internal_Rela *rel)
69fc87f1
MS		 2076{
2077 reloc_howto_type *howto;
2078
2079 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
4eca0228 2080 _bfd_error_handler
695344c0 2081 /* xgettext:c-format */
2dcf00ce 2082 (_("%pB(%pA+%#" PRIx64 "): invalid instruction for TLS relocation %s"),
d003868e
AM		 2083 input_bfd,
2084 input_section,
2dcf00ce 2085 (uint64_t) rel->r_offset,
69fc87f1 2086 howto->name);
77df2968 2087 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2088}
2089
a85d7ed0
NC		 2090/* Relocate a 390 ELF section. */
2091
b34976b6 2092static bfd_boolean
4dfe6ac6
NC		 2093elf_s390_relocate_section (bfd *output_bfd,
2094 struct bfd_link_info *info,
2095 bfd *input_bfd,
2096 asection *input_section,
2097 bfd_byte *contents,
2098 Elf_Internal_Rela *relocs,
2099 Elf_Internal_Sym *local_syms,
2100 asection **local_sections)
a85d7ed0 2101{
0451c93c 2102 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2103 Elf_Internal_Shdr *symtab_hdr;
2104 struct elf_link_hash_entry **sym_hashes;
2105 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2106 Elf_Internal_Rela *rel;
2107 Elf_Internal_Rela *relend;
2108
0ffa91dd
NC		 2109 BFD_ASSERT (is_s390_elf (input_bfd));
2110
0451c93c 2111 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 2112 if (htab == NULL)
2113 return FALSE;
2114
0ffa91dd 2115 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2116 sym_hashes = elf_sym_hashes (input_bfd);
2117 local_got_offsets = elf_local_got_offsets (input_bfd);
2118
a85d7ed0
NC		 2119 rel = relocs;
2120 relend = relocs + input_section->reloc_count;
2121 for (; rel < relend; rel++)
2122 {
5236c819 2123 unsigned int r_type;
a85d7ed0
NC		 2124 reloc_howto_type *howto;
2125 unsigned long r_symndx;
2126 struct elf_link_hash_entry *h;
2127 Elf_Internal_Sym *sym;
2128 asection *sec;
0451c93c 2129 bfd_vma off;
a85d7ed0 2130 bfd_vma relocation;
b34976b6 2131 bfd_boolean unresolved_reloc;
a85d7ed0 2132 bfd_reloc_status_type r;
69fc87f1 2133 int tls_type;
470b557a 2134 asection *base_got = htab->elf.sgot;
b27bb18f 2135 bfd_boolean resolved_to_zero;
a85d7ed0
NC		 2136
2137 r_type = ELF64_R_TYPE (rel->r_info);
0451c93c 2138 if (r_type == (int) R_390_GNU_VTINHERIT
947216bf
AM		 2139 || r_type == (int) R_390_GNU_VTENTRY)
2140 continue;
5236c819 2141 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2142 {
2143 bfd_set_error (bfd_error_bad_value);
b34976b6 2144 return FALSE;
a85d7ed0 2145 }
a85d7ed0 2146
b491616a 2147 howto = elf_howto_table + r_type;
a85d7ed0 2148 r_symndx = ELF64_R_SYM (rel->r_info);
5236c819 2149
a85d7ed0
NC		 2150 h = NULL;
2151 sym = NULL;
2152 sec = NULL;
b34976b6 2153 unresolved_reloc = FALSE;
a85d7ed0
NC		 2154 if (r_symndx < symtab_hdr->sh_info)
2155 {
2156 sym = local_syms + r_symndx;
2157 sec = local_sections[r_symndx];
470b557a
AK		 2158
2159 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2160 {
2161 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2162 if (local_plt == NULL)
2163 return FALSE;
2164
2165 /* Address of the PLT slot. */
2166 relocation = (htab->elf.iplt->output_section->vma
2167 + htab->elf.iplt->output_offset
2168 + local_plt[r_symndx].plt.offset);
2169
2170 switch (r_type)
2171 {
31db78f6
AK		 2172 case R_390_PLTOFF16:
2173 case R_390_PLTOFF32:
2174 case R_390_PLTOFF64:
2175 relocation -= htab->elf.sgot->output_section->vma;
2176 break;
470b557a
AK		 2177 case R_390_GOTPLT12:
2178 case R_390_GOTPLT16:
2179 case R_390_GOTPLT20:
2180 case R_390_GOTPLT32:
2181 case R_390_GOTPLT64:
2182 case R_390_GOTPLTENT:
2183 case R_390_GOT12:
2184 case R_390_GOT16:
2185 case R_390_GOT20:
2186 case R_390_GOT32:
2187 case R_390_GOT64:
2188 case R_390_GOTENT:
2189 {
2190 /* Write the PLT slot address into the GOT slot. */
2191 bfd_put_64 (output_bfd, relocation,
2192 htab->elf.sgot->contents +
2193 local_got_offsets[r_symndx]);
2194 relocation = (local_got_offsets[r_symndx] +
2195 htab->elf.sgot->output_offset);
2196
2197 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2198 relocation += htab->elf.sgot->output_section->vma;
2199 break;
2200 }
2201 default:
2202 break;
2203 }
2204 /* The output section is needed later in
2205 finish_dynamic_section when creating the dynamic
2206 relocation. */
2207 local_plt[r_symndx].sec = sec;
2208 goto do_relocation;
2209 }
2210 else
2211 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2212 }
2213 else
2214 {
560e09e9 2215 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2216 bfd_boolean ignored ATTRIBUTE_UNUSED;
0451c93c 2217
b2a8e766
AM		 2218 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2219 r_symndx, symtab_hdr, sym_hashes,
2220 h, sec, relocation,
62d887d4 2221 unresolved_reloc, warned, ignored);
a85d7ed0
NC		 2222 }
2223
dbaa2011 2224 if (sec != NULL && discarded_section (sec))
e4067dbb 2225 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2226 rel, 1, relend, howto, 0, contents);
ab96bf03 2227
0e1862bb 2228 if (bfd_link_relocatable (info))
ab96bf03
AM		 2229 continue;
2230
b27bb18f
L		 2231 resolved_to_zero = (h != NULL
2232 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
2233
a85d7ed0
NC		 2234 switch (r_type)
2235 {
5236c819
MS		 2236 case R_390_GOTPLT12:
2237 case R_390_GOTPLT16:
bd1ea41b 2238 case R_390_GOTPLT20:
5236c819
MS		 2239 case R_390_GOTPLT32:
2240 case R_390_GOTPLT64:
2241 case R_390_GOTPLTENT:
2242 /* There are three cases for a GOTPLT relocation. 1) The
2243 relocation is against the jump slot entry of a plt that
2244 will get emitted to the output file. 2) The relocation
2245 is against the jump slot of a plt entry that has been
2246 removed. elf_s390_adjust_gotplt has created a GOT entry
2247 as replacement. 3) The relocation is against a local symbol.
2248 Cases 2) and 3) are the same as the GOT relocation code
2249 so we just have to test for case 1 and fall through for
2250 the other two. */
2251 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2252 {
2253 bfd_vma plt_index;
2254
470b557a
AK		 2255 if (s390_is_ifunc_symbol_p (h))
2256 {
2257 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2258 relocation = (plt_index * GOT_ENTRY_SIZE +
2259 htab->elf.igotplt->output_offset);
2260 if (r_type == R_390_GOTPLTENT)
2261 relocation += htab->elf.igotplt->output_section->vma;
2262 }
2263 else
2264 {
2265 /* Calc. index no.
2266 Current offset - size first entry / entry size. */
2267 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2268 PLT_ENTRY_SIZE;
2269
2270 /* Offset in GOT is PLT index plus GOT headers(3)
3b67f094 2271 times 8, addr & GOT addr. */
470b557a
AK		 2272 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2273 if (r_type == R_390_GOTPLTENT)
2274 relocation += htab->elf.sgot->output_section->vma;
2275 }
5236c819 2276 unresolved_reloc = FALSE;
5236c819
MS		 2277 break;
2278 }
2279 /* Fall through. */
2280
947216bf
AM		 2281 case R_390_GOT12:
2282 case R_390_GOT16:
bd1ea41b 2283 case R_390_GOT20:
947216bf
AM		 2284 case R_390_GOT32:
2285 case R_390_GOT64:
2286 case R_390_GOTENT:
2287 /* Relocation is to the entry for this symbol in the global
2288 offset table. */
470b557a 2289 if (base_got == NULL)
0451c93c 2290 abort ();
a85d7ed0 2291
947216bf
AM		 2292 if (h != NULL)
2293 {
b34976b6 2294 bfd_boolean dyn;
a85d7ed0 2295
947216bf 2296 off = h->got.offset;
0451c93c 2297 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2298
2299 if (s390_is_ifunc_symbol_p (h))
2300 {
2301 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2302 if (off == (bfd_vma)-1)
2303 {
2304 /* No explicit GOT usage so redirect to the
2305 got.iplt slot. */
2306 base_got = htab->elf.igotplt;
2307 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2308 }
2309 else
2310 {
2311 /* Explicit GOT slots must contain the address
2312 of the PLT slot. This will be handled in
2313 finish_dynamic_symbol. */
2314 }
2315 }
0e1862bb
L		 2316 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2317 bfd_link_pic (info),
2318 h)
2319 || (bfd_link_pic (info)
470b557a 2320 && SYMBOL_REFERENCES_LOCAL (info, h))
10e7c045 2321 || resolved_to_zero)
947216bf
AM		 2322 {
2323 /* This is actually a static link, or it is a
2324 -Bsymbolic link and the symbol is defined
2325 locally, or the symbol was forced to be local
2326 because of a version file. We must initialize
2327 this entry in the global offset table. Since the
2328 offset must always be a multiple of 2, we use the
2329 least significant bit to record whether we have
2330 initialized it already.
2331
2332 When doing a dynamic link, we create a .rel.got
2333 relocation entry to initialize the value. This
2334 is done in the finish_dynamic_symbol routine. */
2335 if ((off & 1) != 0)
2336 off &= ~1;
2337 else
2338 {
a85d7ed0 2339 bfd_put_64 (output_bfd, relocation,
470b557a 2340 base_got->contents + off);
947216bf
AM		 2341 h->got.offset |= 1;
2342 }
a63cc5f7
AK		 2343
2344 if ((h->def_regular
0e1862bb 2345 && bfd_link_pic (info)
a63cc5f7
AK		 2346 && SYMBOL_REFERENCES_LOCAL (info, h))
2347 /* lgrl rx,sym@GOTENT -> larl rx, sym */
2348 && ((r_type == R_390_GOTENT
2349 && (bfd_get_16 (input_bfd,
2350 contents + rel->r_offset - 2)
2351 & 0xff0f) == 0xc408)
2352 /* lg rx, sym@GOT(r12) -> larl rx, sym */
2353 || (r_type == R_390_GOT20
2354 && (bfd_get_32 (input_bfd,
2355 contents + rel->r_offset - 2)
2356 & 0xff00f000) == 0xe300c000
2357 && bfd_get_8 (input_bfd,
2358 contents + rel->r_offset + 3) == 0x04)))
2359
2360 {
2361 unsigned short new_insn =
2362 (0xc000 | (bfd_get_8 (input_bfd,
2363 contents + rel->r_offset - 1) & 0xf0));
2364 bfd_put_16 (output_bfd, new_insn,
2365 contents + rel->r_offset - 2);
2366 r_type = R_390_PC32DBL;
2367 rel->r_addend = 2;
2368 howto = elf_howto_table + r_type;
2369 relocation = h->root.u.def.value
2370 + h->root.u.def.section->output_section->vma
2371 + h->root.u.def.section->output_offset;
2372 goto do_relocation;
2373 }
947216bf 2374 }
0451c93c 2375 else
b34976b6 2376 unresolved_reloc = FALSE;
947216bf
AM		 2377 }
2378 else
2379 {
0451c93c
MS		 2380 if (local_got_offsets == NULL)
2381 abort ();
a85d7ed0 2382
947216bf 2383 off = local_got_offsets[r_symndx];
a85d7ed0 2384
947216bf
AM		 2385 /* The offset must always be a multiple of 8. We use
2386 the least significant bit to record whether we have
2387 already generated the necessary reloc. */
2388 if ((off & 1) != 0)
2389 off &= ~1;
2390 else
2391 {
2392 bfd_put_64 (output_bfd, relocation,
f41345a7 2393 htab->elf.sgot->contents + off);
a85d7ed0 2394
0e1862bb 2395 if (bfd_link_pic (info))
947216bf
AM		 2396 {
2397 asection *s;
2398 Elf_Internal_Rela outrel;
2399 bfd_byte *loc;
a85d7ed0 2400
f41345a7 2401 s = htab->elf.srelgot;
947216bf 2402 if (s == NULL)
0451c93c 2403 abort ();
a85d7ed0 2404
f41345a7
AK		 2405 outrel.r_offset = (htab->elf.sgot->output_section->vma
2406 + htab->elf.sgot->output_offset
947216bf
AM		 2407 + off);
2408 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2409 outrel.r_addend = relocation;
947216bf
AM		 2410 loc = s->contents;
2411 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2412 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2413 }
a85d7ed0 2414
947216bf
AM		 2415 local_got_offsets[r_symndx] |= 1;
2416 }
2417 }
a85d7ed0 2418
0451c93c
MS		 2419 if (off >= (bfd_vma) -2)
2420 abort ();
2421
470b557a 2422 relocation = base_got->output_offset + off;
0451c93c 2423
ae9a127f
NC		 2424 /* For @GOTENT the relocation is against the offset between
2425 the instruction and the symbols entry in the GOT and not
2426 between the start of the GOT and the symbols entry. We
2427 add the vma of the GOT to get the correct value. */
5236c819
MS		 2428 if ( r_type == R_390_GOTENT
2429 || r_type == R_390_GOTPLTENT)
470b557a 2430 relocation += base_got->output_section->vma;
a85d7ed0 2431
947216bf 2432 break;
99c79b2e 2433
5236c819
MS		 2434 case R_390_GOTOFF16:
2435 case R_390_GOTOFF32:
2436 case R_390_GOTOFF64:
947216bf
AM		 2437 /* Relocation is relative to the start of the global offset
2438 table. */
a85d7ed0 2439
d47b13e0
AK		 2440 if (h != NULL
2441 && s390_is_ifunc_symbol_p (h)
2442 && h->def_regular
2443 && !bfd_link_executable (info))
2444 {
2445 relocation = (htab->elf.iplt->output_section->vma
2446 + htab->elf.iplt->output_offset
2447 + h->plt.offset
2448 - htab->elf.sgot->output_section->vma);
2449 goto do_relocation;
2450 }
2451
947216bf
AM		 2452 /* Note that sgot->output_offset is not involved in this
2453 calculation. We always want the start of .got. If we
2454 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2455 permitted by the ABI, we might have to change this
2456 calculation. */
f41345a7 2457 relocation -= htab->elf.sgot->output_section->vma;
947216bf 2458 break;
a85d7ed0 2459
947216bf 2460 case R_390_GOTPC:
a85d7ed0 2461 case R_390_GOTPCDBL:
947216bf 2462 /* Use global offset table as symbol value. */
f41345a7 2463 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2464 unresolved_reloc = FALSE;
947216bf 2465 break;
a85d7ed0 2466
fb798c50 2467 case R_390_PLT12DBL:
947216bf 2468 case R_390_PLT16DBL:
fb798c50 2469 case R_390_PLT24DBL:
947216bf
AM		 2470 case R_390_PLT32:
2471 case R_390_PLT32DBL:
2472 case R_390_PLT64:
2473 /* Relocation is to the entry for this symbol in the
2474 procedure linkage table. */
a85d7ed0 2475
947216bf
AM		 2476 /* Resolve a PLT32 reloc against a local symbol directly,
2477 without using the procedure linkage table. */
2478 if (h == NULL)
2479 break;
a85d7ed0 2480
947216bf 2481 if (h->plt.offset == (bfd_vma) -1
31db78f6 2482 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
947216bf
AM		 2483 {
2484 /* We didn't make a PLT entry for this symbol. This
2485 happens when statically linking PIC code, or when
2486 using -Bsymbolic. */
2487 break;
2488 }
470b557a
AK		 2489 if (s390_is_ifunc_symbol_p (h))
2490 relocation = (htab->elf.iplt->output_section->vma
2491 + htab->elf.iplt->output_offset
2492 + h->plt.offset);
2493 else
2494 relocation = (htab->elf.splt->output_section->vma
2495 + htab->elf.splt->output_offset
2496 + h->plt.offset);
b34976b6 2497 unresolved_reloc = FALSE;
26e41594 2498 break;
5236c819
MS		 2499
2500 case R_390_PLTOFF16:
2501 case R_390_PLTOFF32:
2502 case R_390_PLTOFF64:
26e41594
AM		 2503 /* Relocation is to the entry for this symbol in the
2504 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2505
2506 /* For local symbols or if we didn't make a PLT entry for
2507 this symbol resolve the symbol directly. */
31db78f6 2508 if (h == NULL
5236c819 2509 || h->plt.offset == (bfd_vma) -1
31db78f6 2510 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2511 {
f41345a7 2512 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS		 2513 break;
2514 }
2515
470b557a
AK		 2516 if (s390_is_ifunc_symbol_p (h))
2517 relocation = (htab->elf.iplt->output_section->vma
2518 + htab->elf.iplt->output_offset
2519 + h->plt.offset
2520 - htab->elf.sgot->output_section->vma);
2521 else
2522 relocation = (htab->elf.splt->output_section->vma
2523 + htab->elf.splt->output_offset
2524 + h->plt.offset
2525 - htab->elf.sgot->output_section->vma);
5236c819 2526 unresolved_reloc = FALSE;
947216bf
AM		 2527 break;
2528
947216bf 2529 case R_390_PC16:
fb798c50 2530 case R_390_PC12DBL:
947216bf 2531 case R_390_PC16DBL:
fb798c50 2532 case R_390_PC24DBL:
947216bf 2533 case R_390_PC32:
a85d7ed0 2534 case R_390_PC32DBL:
947216bf 2535 case R_390_PC64:
431e5de3
AK		 2536 if (h != NULL
2537 && bfd_link_pie (info)
2538 && !h->def_regular)
2539 {
871b3ab2 2540 _bfd_error_handler (_("%pB: `%s' non-PLT reloc for symbol defined "
431e5de3
AK		 2541 "in shared library and accessed "
2542 "from executable "
2543 "(rebuild file with -fPIC ?)"),
2544 input_bfd, h->root.root.string);
2545 bfd_set_error (bfd_error_bad_value);
2546 return FALSE;
2547 }
99ba5125
AK		 2548 /* The target of these relocs are instruction operands
2549 residing in read-only sections. We cannot emit a runtime
2550 reloc for it. */
2551 if (h != NULL
2552 && s390_is_ifunc_symbol_p (h)
2553 && h->def_regular
2554 && bfd_link_pic (info))
2555 {
2556 relocation = (htab->elf.iplt->output_section->vma
2557 + htab->elf.iplt->output_offset
2558 + h->plt.offset);
2559 goto do_relocation;
2560 }
1a0670f3 2561 /* Fall through. */
99ba5125
AK		 2562
2563 case R_390_8:
2564 case R_390_16:
2565 case R_390_32:
2566 case R_390_64:
470b557a 2567
f657f8c4
NC		 2568 if ((input_section->flags & SEC_ALLOC) == 0)
2569 break;
2570
470b557a
AK		 2571 if (h != NULL
2572 && s390_is_ifunc_symbol_p (h)
2573 && h->def_regular)
2574 {
d7ab4911 2575 if (!bfd_link_pic (info))
470b557a 2576 {
d7ab4911
AK		 2577 /* For a non-shared object the symbol will not
2578 change. Hence we can write the address of the
2579 target IPLT slot now. */
470b557a
AK		 2580 relocation = (htab->elf.iplt->output_section->vma
2581 + htab->elf.iplt->output_offset
2582 + h ->plt.offset);
2583 goto do_relocation;
2584 }
2585 else
2586 {
2587 /* For shared objects a runtime relocation is needed. */
2588
2589 Elf_Internal_Rela outrel;
2590 asection *sreloc;
2591
2592 /* Need a dynamic relocation to get the real function
2593 address. */
2594 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2595 info,
2596 input_section,
2597 rel->r_offset);
2598 if (outrel.r_offset == (bfd_vma) -1
2599 || outrel.r_offset == (bfd_vma) -2)
2600 abort ();
2601
2602 outrel.r_offset += (input_section->output_section->vma
2603 + input_section->output_offset);
2604
2605 if (h->dynindx == -1
2606 || h->forced_local
0e1862bb 2607 || bfd_link_executable (info))
470b557a
AK		 2608 {
2609 /* This symbol is resolved locally. */
2610 outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
2611 outrel.r_addend = (h->root.u.def.value
2612 + h->root.u.def.section->output_section->vma
2613 + h->root.u.def.section->output_offset);
2614 }
2615 else
2616 {
2617 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2618 outrel.r_addend = 0;
2619 }
2620
2621 sreloc = htab->elf.irelifunc;
2622 elf_append_rela (output_bfd, sreloc, &outrel);
2623
2624 /* If this reloc is against an external symbol, we
2625 do not want to fiddle with the addend. Otherwise,
2626 we need to include the symbol value so that it
2627 becomes an addend for the dynamic reloc. For an
2628 internal symbol, we have updated addend. */
2629 continue;
2630 }
2631 }
2632
0e1862bb 2633 if ((bfd_link_pic (info)
82058a73 2634 && (h == NULL
b27bb18f
L		 2635 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2636 && !resolved_to_zero)
82058a73 2637 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2638 && ((r_type != R_390_PC16
fb798c50 2639 && r_type != R_390_PC12DBL
0451c93c 2640 && r_type != R_390_PC16DBL
fb798c50 2641 && r_type != R_390_PC24DBL
0451c93c
MS		 2642 && r_type != R_390_PC32
2643 && r_type != R_390_PC32DBL
2644 && r_type != R_390_PC64)
8c21ca21 2645 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810 2646 || (ELIMINATE_COPY_RELOCS
0e1862bb 2647 && !bfd_link_pic (info)
0451c93c
MS		 2648 && h != NULL
2649 && h->dynindx != -1
f5385ebf
AM		 2650 && !h->non_got_ref
2651 && ((h->def_dynamic
2652 && !h->def_regular)
0451c93c
MS		 2653 || h->root.type == bfd_link_hash_undefweak
2654 || h->root.type == bfd_link_hash_undefined)))
947216bf
AM		 2655 {
2656 Elf_Internal_Rela outrel;
b34976b6 2657 bfd_boolean skip, relocate;
0451c93c 2658 asection *sreloc;
947216bf 2659 bfd_byte *loc;
a85d7ed0 2660
947216bf
AM		 2661 /* When generating a shared object, these relocations
2662 are copied into the output file to be resolved at run
2663 time. */
b34976b6
AM		 2664 skip = FALSE;
2665 relocate = FALSE;
a85d7ed0 2666
c629eae0
JJ		 2667 outrel.r_offset =
2668 _bfd_elf_section_offset (output_bfd, info, input_section,
2669 rel->r_offset);
2670 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2671 skip = TRUE;
0bb2d96a 2672 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2673 skip = TRUE, relocate = TRUE;
a85d7ed0 2674
947216bf
AM		 2675 outrel.r_offset += (input_section->output_section->vma
2676 + input_section->output_offset);
a85d7ed0 2677
947216bf 2678 if (skip)
0bb2d96a 2679 memset (&outrel, 0, sizeof outrel);
947216bf 2680 else if (h != NULL
0451c93c
MS		 2681 && h->dynindx != -1
2682 && (r_type == R_390_PC16
fb798c50 2683 || r_type == R_390_PC12DBL
0451c93c 2684 || r_type == R_390_PC16DBL
fb798c50 2685 || r_type == R_390_PC24DBL
0451c93c
MS		 2686 || r_type == R_390_PC32
2687 || r_type == R_390_PC32DBL
2688 || r_type == R_390_PC64
0e1862bb 2689 || !bfd_link_pic (info)
8c21ca21 2690 || !SYMBOLIC_BIND (info, h)
f5385ebf 2691 || !h->def_regular))
947216bf
AM		 2692 {
2693 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
27018c3f 2694 outrel.r_addend = rel->r_addend;
947216bf
AM		 2695 }
2696 else
2697 {
0451c93c 2698 /* This symbol is local, or marked to become local. */
90ced0dd 2699 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2700 if (r_type == R_390_64)
2701 {
2702 relocate = TRUE;
2703 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2704 }
2705 else
2706 {
2707 long sindx;
2708
90ced0dd 2709 if (bfd_is_abs_section (sec))
b5727d75
MS		 2710 sindx = 0;
2711 else if (sec == NULL || sec->owner == NULL)
2712 {
2713 bfd_set_error(bfd_error_bad_value);
2714 return FALSE;
2715 }
2716 else
2717 {
2718 asection *osec;
2719
2720 osec = sec->output_section;
2721 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2722
2723 if (sindx == 0)
2724 {
2725 osec = htab->elf.text_index_section;
2726 sindx = elf_section_data (osec)->dynindx;
2727 }
2728 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2729
2730 /* We are turning this relocation into one
2731 against a section symbol, so subtract out
2732 the output section's address but not the
2733 offset of the input section in the output
2734 section. */
90ced0dd 2735 outrel.r_addend -= osec->vma;
b5727d75
MS		 2736 }
2737 outrel.r_info = ELF64_R_INFO (sindx, r_type);
b5727d75 2738 }
0451c93c 2739 }
a85d7ed0 2740
0451c93c
MS		 2741 sreloc = elf_section_data (input_section)->sreloc;
2742 if (sreloc == NULL)
2743 abort ();
2744
947216bf
AM		 2745 loc = sreloc->contents;
2746 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2747 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
a85d7ed0 2748
947216bf
AM		 2749 /* If this reloc is against an external symbol, we do
2750 not want to fiddle with the addend. Otherwise, we
2751 need to include the symbol value so that it becomes
2752 an addend for the dynamic reloc. */
2753 if (! relocate)
2754 continue;
2755 }
a85d7ed0 2756
947216bf 2757 break;
a85d7ed0 2758
69fc87f1
MS		 2759 /* Relocations for tls literal pool entries. */
2760 case R_390_TLS_IE64:
0e1862bb 2761 if (bfd_link_pic (info))
69fc87f1
MS		 2762 {
2763 Elf_Internal_Rela outrel;
2764 asection *sreloc;
2765 bfd_byte *loc;
2766
2767 outrel.r_offset = rel->r_offset
2768 + input_section->output_section->vma
2769 + input_section->output_offset;
2770 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2771 sreloc = elf_section_data (input_section)->sreloc;
2772 if (sreloc == NULL)
2773 abort ();
2774 loc = sreloc->contents;
2775 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2776 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2777 }
ae9a127f 2778 /* Fall through. */
69fc87f1
MS		 2779
2780 case R_390_TLS_GD64:
2781 case R_390_TLS_GOTIE64:
2782 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2783 tls_type = GOT_UNKNOWN;
2784 if (h == NULL && local_got_offsets)
2785 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2786 else if (h != NULL)
2787 {
2788 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 2789 if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
69fc87f1
MS		 2790 r_type = R_390_TLS_LE64;
2791 }
2792 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2793 r_type = R_390_TLS_IE64;
2794
2795 if (r_type == R_390_TLS_LE64)
2796 {
2797 /* This relocation gets optimized away by the local exec
2798 access optimization. */
2799 BFD_ASSERT (! unresolved_reloc);
2800 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2801 contents + rel->r_offset);
2802 continue;
2803 }
2804
f41345a7 2805 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2806 abort ();
2807
2808 if (h != NULL)
2809 off = h->got.offset;
2810 else
2811 {
2812 if (local_got_offsets == NULL)
2813 abort ();
2814
2815 off = local_got_offsets[r_symndx];
2816 }
2817
2818 emit_tls_relocs:
2819
2820 if ((off & 1) != 0)
2821 off &= ~1;
26e41594 2822 else
69fc87f1
MS		 2823 {
2824 Elf_Internal_Rela outrel;
2825 bfd_byte *loc;
2826 int dr_type, indx;
2827
f41345a7 2828 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2829 abort ();
2830
f41345a7
AK		 2831 outrel.r_offset = (htab->elf.sgot->output_section->vma
2832 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2833
2834 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2835 if (r_type == R_390_TLS_GD64)
2836 dr_type = R_390_TLS_DTPMOD;
2837 else
2838 dr_type = R_390_TLS_TPOFF;
2839 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2840 outrel.r_addend = relocation - dtpoff_base (info);
2841 else
2842 outrel.r_addend = 0;
2843 outrel.r_info = ELF64_R_INFO (indx, dr_type);
f41345a7
AK		 2844 loc = htab->elf.srelgot->contents;
2845 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2846 * sizeof (Elf64_External_Rela);
2847 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2848
2849 if (r_type == R_390_TLS_GD64)
2850 {
2851 if (indx == 0)
2852 {
07d6d2b8 2853 BFD_ASSERT (! unresolved_reloc);
69fc87f1
MS		 2854 bfd_put_64 (output_bfd,
2855 relocation - dtpoff_base (info),
f41345a7 2856 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2857 }
2858 else
2859 {
2860 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
2861 outrel.r_offset += GOT_ENTRY_SIZE;
2862 outrel.r_addend = 0;
f41345a7 2863 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 2864 loc += sizeof (Elf64_External_Rela);
2865 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2866 }
2867 }
2868
2869 if (h != NULL)
2870 h->got.offset |= 1;
2871 else
2872 local_got_offsets[r_symndx] |= 1;
2873 }
2874
2875 if (off >= (bfd_vma) -2)
2876 abort ();
2877 if (r_type == ELF64_R_TYPE (rel->r_info))
2878 {
f41345a7 2879 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2880 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
f41345a7 2881 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2882 unresolved_reloc = FALSE;
2883 }
2884 else
2885 {
f41345a7 2886 bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 2887 contents + rel->r_offset);
2888 continue;
2889 }
2890 break;
2891
2892 case R_390_TLS_GOTIE12:
bd1ea41b 2893 case R_390_TLS_GOTIE20:
69fc87f1
MS		 2894 case R_390_TLS_IEENT:
2895 if (h == NULL)
2896 {
2897 if (local_got_offsets == NULL)
2898 abort();
2899 off = local_got_offsets[r_symndx];
0e1862bb 2900 if (bfd_link_pic (info))
69fc87f1
MS		 2901 goto emit_tls_relocs;
2902 }
2903 else
2904 {
2905 off = h->got.offset;
2906 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 2907 if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE)
69fc87f1
MS		 2908 goto emit_tls_relocs;
2909 }
2910
f41345a7 2911 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2912 abort ();
2913
2914 BFD_ASSERT (! unresolved_reloc);
2915 bfd_put_64 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 2916 htab->elf.sgot->contents + off);
2917 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2918 if (r_type == R_390_TLS_IEENT)
f41345a7 2919 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2920 unresolved_reloc = FALSE;
2921 break;
2922
2923 case R_390_TLS_LDM64:
0e1862bb 2924 if (! bfd_link_pic (info))
69fc87f1
MS		 2925 /* The literal pool entry this relocation refers to gets ignored
2926 by the optimized code of the local exec model. Do nothing
2927 and the value will turn out zero. */
2928 continue;
2929
f41345a7 2930 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2931 abort ();
2932
2933 off = htab->tls_ldm_got.offset;
2934 if (off & 1)
2935 off &= ~1;
2936 else
2937 {
2938 Elf_Internal_Rela outrel;
2939 bfd_byte *loc;
2940
f41345a7 2941 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2942 abort ();
2943
f41345a7
AK		 2944 outrel.r_offset = (htab->elf.sgot->output_section->vma
2945 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2946
2947 bfd_put_64 (output_bfd, 0,
f41345a7 2948 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2949 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
2950 outrel.r_addend = 0;
f41345a7
AK		 2951 loc = htab->elf.srelgot->contents;
2952 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2953 * sizeof (Elf64_External_Rela);
2954 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2955 htab->tls_ldm_got.offset |= 1;
2956 }
f41345a7 2957 relocation = htab->elf.sgot->output_offset + off;
26e41594 2958 unresolved_reloc = FALSE;
69fc87f1
MS		 2959 break;
2960
2961 case R_390_TLS_LE64:
3cbc1e5e 2962 if (bfd_link_dll (info))
69fc87f1
MS		 2963 {
2964 /* Linking a shared library with non-fpic code requires
2965 a R_390_TLS_TPOFF relocation. */
2966 Elf_Internal_Rela outrel;
2967 asection *sreloc;
2968 bfd_byte *loc;
2969 int indx;
2970
2971 outrel.r_offset = rel->r_offset
2972 + input_section->output_section->vma
2973 + input_section->output_offset;
2974 if (h != NULL && h->dynindx != -1)
2975 indx = h->dynindx;
2976 else
2977 indx = 0;
2978 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
2979 if (indx == 0)
2980 outrel.r_addend = relocation - dtpoff_base (info);
2981 else
2982 outrel.r_addend = 0;
2983 sreloc = elf_section_data (input_section)->sreloc;
2984 if (sreloc == NULL)
2985 abort ();
2986 loc = sreloc->contents;
2987 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2988 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2989 }
2990 else
2991 {
2992 BFD_ASSERT (! unresolved_reloc);
2993 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2994 contents + rel->r_offset);
2995 }
2996 continue;
2997
2998 case R_390_TLS_LDO64:
0e1862bb 2999 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 3000 relocation -= dtpoff_base (info);
3001 else
3002 /* When converting LDO to LE, we must negate. */
3003 relocation = -tpoff (info, relocation);
3004 break;
3005
3006 /* Relocations for tls instructions. */
3007 case R_390_TLS_LOAD:
3008 case R_390_TLS_GDCALL:
3009 case R_390_TLS_LDCALL:
3010 tls_type = GOT_UNKNOWN;
3011 if (h == NULL && local_got_offsets)
3012 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3013 else if (h != NULL)
3014 tls_type = elf_s390_hash_entry(h)->tls_type;
3015
3016 if (tls_type == GOT_TLS_GD)
3017 continue;
3018
3019 if (r_type == R_390_TLS_LOAD)
3020 {
0e1862bb 3021 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3022 {
3023 /* IE->LE transition. Four valid cases:
3024 lg %rx,(0,%ry) -> sllg %rx,%ry,0
3025 lg %rx,(%ry,0) -> sllg %rx,%ry,0
3026 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
3027 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
3028 unsigned int insn0, insn1, ry;
3029
3030 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3031 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3032 if (insn1 != 0x0004)
3704e358
AK		 3033 {
3034 invalid_tls_insn (input_bfd, input_section, rel);
3035 return FALSE;
3036 }
69fc87f1
MS		 3037 if ((insn0 & 0xff00f000) == 0xe3000000)
3038 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
3039 ry = (insn0 & 0x000f0000);
3040 else if ((insn0 & 0xff0f0000) == 0xe3000000)
3041 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
3042 ry = (insn0 & 0x0000f000) << 4;
3043 else if ((insn0 & 0xff00f000) == 0xe300c000)
3044 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
3045 ry = (insn0 & 0x000f0000);
3046 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
3047 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
3048 ry = (insn0 & 0x0000f000) << 4;
3049 else
3704e358
AK		 3050 {
3051 invalid_tls_insn (input_bfd, input_section, rel);
3052 return FALSE;
3053 }
69fc87f1
MS		 3054 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
3055 insn1 = 0x000d;
3056 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3057 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3058 }
3059 }
3060 else if (r_type == R_390_TLS_GDCALL)
3061 {
3062 unsigned int insn0, insn1;
3063
3064 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3065 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3066 if ((insn0 & 0xffff0000) != 0xc0e50000)
3704e358
AK		 3067 {
3068 invalid_tls_insn (input_bfd, input_section, rel);
3069 return FALSE;
3070 }
0e1862bb 3071 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3072 {
3073 /* GD->LE transition.
3074 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3075 insn0 = 0xc0040000;
3076 insn1 = 0x0000;
3077 }
3078 else
3079 {
3080 /* GD->IE transition.
3081 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
3082 insn0 = 0xe322c000;
3083 insn1 = 0x0004;
3084 }
3085 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3086 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3087 }
3088 else if (r_type == R_390_TLS_LDCALL)
3089 {
0e1862bb 3090 if (!bfd_link_pic (info))
69fc87f1
MS		 3091 {
3092 unsigned int insn0, insn1;
3093
3094 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3095 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3096 if ((insn0 & 0xffff0000) != 0xc0e50000)
3704e358
AK		 3097 {
3098 invalid_tls_insn (input_bfd, input_section, rel);
3099 return FALSE;
3100 }
69fc87f1
MS		 3101 /* LD->LE transition.
3102 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3103 insn0 = 0xc0040000;
3104 insn1 = 0x0000;
3105 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3106 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3107 }
3108 }
3109 continue;
3110
947216bf
AM		 3111 default:
3112 break;
3113 }
a85d7ed0 3114
239e1f3a
AM		 3115 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3116 because such sections are not SEC_ALLOC and thus ld.so will
3117 not process them. */
0451c93c 3118 if (unresolved_reloc
239e1f3a 3119 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3120 && h->def_dynamic)
3121 && _bfd_elf_section_offset (output_bfd, info, input_section,
3122 rel->r_offset) != (bfd_vma) -1)
4eca0228 3123 _bfd_error_handler
695344c0 3124 /* xgettext:c-format */
2dcf00ce
AM		 3125 (_("%pB(%pA+%#" PRIx64 "): "
3126 "unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3127 input_bfd,
3128 input_section,
2dcf00ce 3129 (uint64_t) rel->r_offset,
843fe662 3130 howto->name,
0451c93c
MS		 3131 h->root.root.string);
3132
470b557a
AK		 3133 do_relocation:
3134
fb798c50
AK		 3135 /* When applying a 24 bit reloc we need to start one byte
3136 earlier. Otherwise the 32 bit get/put bfd operations might
3137 access a byte after the actual section. */
3138 if (r_type == R_390_PC24DBL
3139 || r_type == R_390_PLT24DBL)
3140 rel->r_offset--;
3141
bd1ea41b
MS		 3142 if (r_type == R_390_20
3143 || r_type == R_390_GOT20
3144 || r_type == R_390_GOTPLT20
3145 || r_type == R_390_TLS_GOTIE20)
3146 {
3147 relocation += rel->r_addend;
3148 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3149 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3150 contents, rel->r_offset,
3151 relocation, 0);
3152 }
3153 else
3154 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
a85d7ed0
NC		 3155 contents, rel->r_offset,
3156 relocation, rel->r_addend);
3157
3158 if (r != bfd_reloc_ok)
3159 {
0451c93c 3160 const char *name;
ec338859 3161
0451c93c
MS		 3162 if (h != NULL)
3163 name = h->root.root.string;
3164 else
a85d7ed0 3165 {
0451c93c
MS		 3166 name = bfd_elf_string_from_elf_section (input_bfd,
3167 symtab_hdr->sh_link,
3168 sym->st_name);
3169 if (name == NULL)
b34976b6 3170 return FALSE;
0451c93c
MS		 3171 if (*name == '\0')
3172 name = bfd_section_name (input_bfd, sec);
3173 }
ec338859 3174
0451c93c 3175 if (r == bfd_reloc_overflow)
1a72702b
AM		 3176 (*info->callbacks->reloc_overflow)
3177 (info, (h ? &h->root : NULL), name, howto->name,
3178 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
0451c93c
MS		 3179 else
3180 {
4eca0228 3181 _bfd_error_handler
695344c0 3182 /* xgettext:c-format */
2dcf00ce 3183 (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"),
d003868e 3184 input_bfd, input_section,
2dcf00ce 3185 (uint64_t) rel->r_offset, name, (int) r);
b34976b6 3186 return FALSE;
a85d7ed0
NC		 3187 }
3188 }
3189 }
3190
b34976b6 3191 return TRUE;
a85d7ed0
NC		 3192}
3193
470b557a
AK		 3194/* Generate the PLT slots together with the dynamic relocations needed
3195 for IFUNC symbols. */
3196
3197static void
3198elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3199 struct bfd_link_info *info,
3200 struct elf_link_hash_entry *h,
3201 struct elf_s390_link_hash_table *htab,
3202 bfd_vma plt_offset,
3203 bfd_vma resolver_address)
3204{
3205 bfd_vma plt_index;
3206 bfd_vma got_offset;
3207 Elf_Internal_Rela rela;
3208 bfd_byte *loc;
3209 asection *plt, *gotplt, *relplt;
3210
3211 if (htab->elf.iplt == NULL
3212 || htab->elf.igotplt == NULL
3213 || htab->elf.irelplt == NULL)
3214 abort ();
3215
3216 /* Index of the PLT slot within iplt section. */
3217 plt_index = plt_offset / PLT_ENTRY_SIZE;
3218 plt = htab->elf.iplt;
3219 /* Offset into the igot.plt section. */
3220 got_offset = plt_index * GOT_ENTRY_SIZE;
3221 gotplt = htab->elf.igotplt;
3222 relplt = htab->elf.irelplt;
3223
3224 /* Fill in the blueprint of a PLT. */
3225 memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
3226 PLT_ENTRY_SIZE);
3227
3228 /* Fixup the relative address to the GOT entry */
3229 bfd_put_32 (output_bfd,
3230 (gotplt->output_section->vma +
3231 gotplt->output_offset + got_offset
3232 - (plt->output_section->vma +
3233 plt->output_offset +
3234 plt_offset))/2,
3235 plt->contents + plt_offset + 2);
3236 /* Fixup the relative branch to PLT 0 */
3237 bfd_put_32 (output_bfd, - (plt->output_offset +
3238 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3239 plt->contents + plt_offset + 24);
3240 /* Fixup offset into .rela.plt section. */
3241 bfd_put_32 (output_bfd, relplt->output_offset +
3242 plt_index * sizeof (Elf64_External_Rela),
3243 plt->contents + plt_offset + 28);
3244
3245 /* Fill in the entry in the global offset table.
3246 Points to instruction after GOT offset. */
3247 bfd_put_64 (output_bfd,
3248 (plt->output_section->vma
3249 + plt->output_offset
3250 + plt_offset
3251 + 14),
3252 gotplt->contents + got_offset);
3253
3254 /* Fill in the entry in the .rela.plt section. */
3255 rela.r_offset = (gotplt->output_section->vma
3256 + gotplt->output_offset
3257 + got_offset);
3258
3259 if (!h
3260 || h->dynindx == -1
0e1862bb 3261 || ((bfd_link_executable (info)
470b557a
AK		 3262 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3263 && h->def_regular))
3264 {
3265 /* The symbol can be locally resolved. */
3266 rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
3267 rela.r_addend = resolver_address;
3268 }
3269 else
3270 {
3271 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3272 rela.r_addend = 0;
3273 }
3274
3275 loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
3276 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3277}
3278
3279
a85d7ed0
NC		 3280/* Finish up dynamic symbol handling. We set the contents of various
3281 dynamic sections here. */
3282
b34976b6 3283static bfd_boolean
4dfe6ac6
NC		 3284elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3285 struct bfd_link_info *info,
3286 struct elf_link_hash_entry *h,
3287 Elf_Internal_Sym *sym)
a85d7ed0 3288{
0451c93c 3289 struct elf_s390_link_hash_table *htab;
470b557a 3290 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
a85d7ed0 3291
0451c93c 3292 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3293 if (htab == NULL)
3294 return FALSE;
a85d7ed0
NC		 3295
3296 if (h->plt.offset != (bfd_vma) -1)
3297 {
a85d7ed0 3298 bfd_vma plt_index;
0451c93c
MS		 3299 bfd_vma got_offset;
3300 Elf_Internal_Rela rela;
947216bf 3301 bfd_byte *loc;
a85d7ed0
NC		 3302
3303 /* This symbol has an entry in the procedure linkage table. Set
947216bf 3304 it up. */
0a511368 3305 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
470b557a 3306 {
0a511368
AK		 3307 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3308 htab, h->plt.offset,
3309 eh->ifunc_resolver_address +
3310 eh->ifunc_resolver_section->output_offset +
3311 eh->ifunc_resolver_section->output_section->vma);
3312
3313 /* Do not return yet. Handling of explicit GOT slots of
3314 IFUNC symbols is below. */
470b557a
AK		 3315 }
3316 else
3317 {
3318 if (h->dynindx == -1
3319 || htab->elf.splt == NULL
3320 || htab->elf.sgotplt == NULL
3321 || htab->elf.srelplt == NULL)
3322 abort ();
a85d7ed0 3323
470b557a
AK		 3324 /* Calc. index no.
3325 Current offset - size first entry / entry size. */
3326 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
a85d7ed0 3327
470b557a
AK		 3328 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
3329 addr & GOT addr. */
3330 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3331
470b557a
AK		 3332 /* Fill in the blueprint of a PLT. */
3333 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
3334 PLT_ENTRY_SIZE);
3335
3336 /* Fixup the relative address to the GOT entry */
3337 bfd_put_32 (output_bfd,
3338 (htab->elf.sgotplt->output_section->vma +
3339 htab->elf.sgotplt->output_offset + got_offset
3340 - (htab->elf.splt->output_section->vma +
3341 htab->elf.splt->output_offset +
3342 h->plt.offset))/2,
3343 htab->elf.splt->contents + h->plt.offset + 2);
3344 /* Fixup the relative branch to PLT 0 */
3345 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3346 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3347 htab->elf.splt->contents + h->plt.offset + 24);
3348 /* Fixup offset into .rela.plt section. */
3349 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3350 htab->elf.splt->contents + h->plt.offset + 28);
3351
3352 /* Fill in the entry in the global offset table.
3353 Points to instruction after GOT offset. */
3354 bfd_put_64 (output_bfd,
3355 (htab->elf.splt->output_section->vma
3356 + htab->elf.splt->output_offset
3357 + h->plt.offset
3358 + 14),
3359 htab->elf.sgotplt->contents + got_offset);
3360
3361 /* Fill in the entry in the .rela.plt section. */
3362 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3363 + htab->elf.sgotplt->output_offset
3364 + got_offset);
3365 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3366 rela.r_addend = 0;
3367 loc = htab->elf.srelplt->contents + plt_index *
3368 sizeof (Elf64_External_Rela);
3369 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3370
3371 if (!h->def_regular)
3372 {
3373 /* Mark the symbol as undefined, rather than as defined in
3374 the .plt section. Leave the value alone. This is a clue
3375 for the dynamic linker, to make function pointer
3376 comparisons work between an application and shared
3377 library. */
3378 sym->st_shndx = SHN_UNDEF;
3379 }
a85d7ed0
NC		 3380 }
3381 }
3382
69fc87f1
MS		 3383 if (h->got.offset != (bfd_vma) -1
3384 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3385 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3386 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3387 {
a85d7ed0 3388 Elf_Internal_Rela rela;
947216bf 3389 bfd_byte *loc;
a85d7ed0
NC		 3390
3391 /* This symbol has an entry in the global offset table. Set it
947216bf 3392 up. */
f41345a7 3393 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3394 abort ();
a85d7ed0 3395
f41345a7
AK		 3396 rela.r_offset = (htab->elf.sgot->output_section->vma
3397 + htab->elf.sgot->output_offset
dc810e39 3398 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0 3399
470b557a
AK		 3400 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3401 {
0e1862bb 3402 if (bfd_link_pic (info))
470b557a
AK		 3403 {
3404 /* An explicit GOT slot usage needs GLOB_DAT. If the
3405 symbol references local the implicit got.iplt slot
3406 will be used and the IRELATIVE reloc has been created
3407 above. */
3408 goto do_glob_dat;
3409 }
3410 else
3411 {
3412 /* For non-shared objects explicit GOT slots must be
3413 filled with the PLT slot address for pointer
3414 equality reasons. */
3415 bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
3416 + htab->elf.iplt->output_offset
3417 + h->plt.offset),
3418 htab->elf.sgot->contents + h->got.offset);
3419 return TRUE;
3420 }
3421 }
0e1862bb 3422 else if (bfd_link_pic (info)
ceada896 3423 && SYMBOL_REFERENCES_LOCAL (info, h))
947216bf 3424 {
10e7c045
AK		 3425 if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
3426 return TRUE;
3427
470b557a
AK		 3428 /* If this is a static link, or it is a -Bsymbolic link and
3429 the symbol is defined locally or was forced to be local
3430 because of a version file, we just want to emit a
3431 RELATIVE reloc. The entry in the global offset table
3432 will already have been initialized in the
3433 relocate_section function. */
8170f769 3434 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
8c21ca21 3435 return FALSE;
0451c93c 3436 BFD_ASSERT((h->got.offset & 1) != 0);
947216bf
AM		 3437 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3438 rela.r_addend = (h->root.u.def.value
3439 + h->root.u.def.section->output_section->vma
3440 + h->root.u.def.section->output_offset);
3441 }
a85d7ed0
NC		 3442 else
3443 {
3444 BFD_ASSERT((h->got.offset & 1) == 0);
ceada896 3445 do_glob_dat:
f41345a7 3446 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3447 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
947216bf
AM		 3448 rela.r_addend = 0;
3449 }
a85d7ed0 3450
f41345a7
AK		 3451 loc = htab->elf.srelgot->contents;
3452 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3453 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3454 }
3455
f5385ebf 3456 if (h->needs_copy)
a85d7ed0 3457 {
a85d7ed0 3458 Elf_Internal_Rela rela;
5474d94f 3459 asection *s;
947216bf 3460 bfd_byte *loc;
a85d7ed0
NC		 3461
3462 /* This symbols needs a copy reloc. Set it up. */
3463
0451c93c
MS		 3464 if (h->dynindx == -1
3465 || (h->root.type != bfd_link_hash_defined
3466 && h->root.type != bfd_link_hash_defweak)
9d19e4fd 3467 || htab->elf.srelbss == NULL)
0451c93c 3468 abort ();
a85d7ed0
NC		 3469
3470 rela.r_offset = (h->root.u.def.value
3471 + h->root.u.def.section->output_section->vma
3472 + h->root.u.def.section->output_offset);
3473 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3474 rela.r_addend = 0;
afbf7e8e 3475 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 3476 s = htab->elf.sreldynrelro;
3477 else
3478 s = htab->elf.srelbss;
3479 loc = s->contents + s->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3480 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3481 }
3482
3483 /* Mark some specially defined symbols as absolute. */
9637f6ef 3484 if (h == htab->elf.hdynamic
22edb2f1
RS		 3485 || h == htab->elf.hgot
3486 || h == htab->elf.hplt)
a85d7ed0
NC		 3487 sym->st_shndx = SHN_ABS;
3488
b34976b6 3489 return TRUE;
a85d7ed0
NC		 3490}
3491
0451c93c
MS		 3492/* Used to decide how to sort relocs in an optimal manner for the
3493 dynamic linker, before writing them out. */
3494
3495static enum elf_reloc_type_class
7e612e98
AM		 3496elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3497 const asection *rel_sec ATTRIBUTE_UNUSED,
3498 const Elf_Internal_Rela *rela)
0451c93c 3499{
0f042c67
AK		 3500 bfd *abfd = info->output_bfd;
3501 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3502 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3503 unsigned long r_symndx = ELF64_R_SYM (rela->r_info);
3504 Elf_Internal_Sym sym;
3505
3506 if (htab->elf.dynsym == NULL
3507 || !bed->s->swap_symbol_in (abfd,
3508 (htab->elf.dynsym->contents
3509 + r_symndx * bed->s->sizeof_sym),
3510 0, &sym))
3511 abort ();
3512
3513 /* Check relocation against STT_GNU_IFUNC symbol. */
3514 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3515 return reloc_class_ifunc;
3516
0451c93c
MS		 3517 switch ((int) ELF64_R_TYPE (rela->r_info))
3518 {
3519 case R_390_RELATIVE:
3520 return reloc_class_relative;
3521 case R_390_JMP_SLOT:
3522 return reloc_class_plt;
3523 case R_390_COPY:
3524 return reloc_class_copy;
3525 default:
3526 return reloc_class_normal;
3527 }
3528}
3529
a85d7ed0
NC		 3530/* Finish up the dynamic sections. */
3531
b34976b6 3532static bfd_boolean
4dfe6ac6
NC		 3533elf_s390_finish_dynamic_sections (bfd *output_bfd,
3534 struct bfd_link_info *info)
a85d7ed0 3535{
0451c93c 3536 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3537 bfd *dynobj;
3538 asection *sdyn;
470b557a
AK		 3539 bfd *ibfd;
3540 unsigned int i;
a85d7ed0 3541
0451c93c 3542 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3543 if (htab == NULL)
3544 return FALSE;
3545
0451c93c 3546 dynobj = htab->elf.dynobj;
3d4d4302 3547 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3548
0451c93c 3549 if (htab->elf.dynamic_sections_created)
a85d7ed0 3550 {
a85d7ed0
NC		 3551 Elf64_External_Dyn *dyncon, *dynconend;
3552
f41345a7 3553 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3554 abort ();
a85d7ed0
NC		 3555
3556 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 3557 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3558 for (; dyncon < dynconend; dyncon++)
3559 {
3560 Elf_Internal_Dyn dyn;
a85d7ed0 3561 asection *s;
ec338859 3562
a85d7ed0 3563 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3564
a85d7ed0
NC		 3565 switch (dyn.d_tag)
3566 {
3567 default:
0451c93c 3568 continue;
ec338859 3569
a85d7ed0 3570 case DT_PLTGOT:
4ade44b7
AM		 3571 s = htab->elf.sgotplt;
3572 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
0451c93c 3573 break;
ec338859 3574
a85d7ed0 3575 case DT_JMPREL:
4ade44b7
AM		 3576 s = htab->elf.srelplt;
3577 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a85d7ed0 3578 break;
ec338859 3579
a85d7ed0 3580 case DT_PLTRELSZ:
79c12fae
AK		 3581 dyn.d_un.d_val = htab->elf.srelplt->size;
3582 if (htab->elf.irelplt)
3583 dyn.d_un.d_val += htab->elf.irelplt->size;
a85d7ed0 3584 break;
ec338859 3585
a85d7ed0
NC		 3586 case DT_RELASZ:
3587 /* The procedure linkage table relocs (DT_JMPREL) should
3588 not be included in the overall relocs (DT_RELA).
3589 Therefore, we override the DT_RELASZ entry here to
3590 make it not include the JMPREL relocs. Since the
3591 linker script arranges for .rela.plt to follow all
3592 other relocation sections, we don't have to worry
3593 about changing the DT_RELA entry. */
79c12fae
AK		 3594 dyn.d_un.d_val -= htab->elf.srelplt->size;
3595 if (htab->elf.irelplt)
3596 dyn.d_un.d_val -= htab->elf.irelplt->size;
a85d7ed0
NC		 3597 break;
3598 }
0451c93c
MS		 3599
3600 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3601 }
3602
3603 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3604 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0
NC		 3605 {
3606 /* fill in blueprint for plt 0 entry */
f41345a7 3607 memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
9aa17453 3608 PLT_FIRST_ENTRY_SIZE);
a85d7ed0
NC		 3609 /* Fixup relative address to start of GOT */
3610 bfd_put_32 (output_bfd,
161db279
AK		 3611 (htab->elf.sgotplt->output_section->vma
3612 + htab->elf.sgotplt->output_offset
3613 - htab->elf.splt->output_section->vma
3614 - htab->elf.splt->output_offset - 6)/2,
f41345a7 3615 htab->elf.splt->contents + 8);
a85d7ed0 3616 }
387f8054
MR		 3617 if (elf_section_data (htab->elf.splt->output_section) != NULL)
3618 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
3619 = PLT_ENTRY_SIZE;
a85d7ed0
NC		 3620 }
3621
f41345a7 3622 if (htab->elf.sgotplt)
a85d7ed0 3623 {
0451c93c 3624 /* Fill in the first three entries in the global offset table. */
f41345a7 3625 if (htab->elf.sgotplt->size > 0)
0451c93c
MS		 3626 {
3627 bfd_put_64 (output_bfd,
3628 (sdyn == NULL ? (bfd_vma) 0
3629 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3630 htab->elf.sgotplt->contents);
0451c93c 3631 /* One entry for shared object struct ptr. */
f41345a7 3632 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3633 /* One entry for _dl_runtime_resolve. */
3b67f094 3634 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 16);
0451c93c 3635 }
a85d7ed0 3636
f41345a7 3637 elf_section_data (htab->elf.sgot->output_section)
0451c93c
MS		 3638 ->this_hdr.sh_entsize = 8;
3639 }
470b557a
AK		 3640
3641 /* Finish dynamic symbol for local IFUNC symbols. */
c72f2fb2 3642 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
470b557a
AK		 3643 {
3644 struct plt_entry *local_plt;
3645 Elf_Internal_Sym *isym;
3646 Elf_Internal_Shdr *symtab_hdr;
3647
3648 symtab_hdr = &elf_symtab_hdr (ibfd);
3649
1ef692ea
AK		 3650 if (!is_s390_elf (ibfd))
3651 continue;
3652
470b557a
AK		 3653 local_plt = elf_s390_local_plt (ibfd);
3654 if (local_plt != NULL)
3655 for (i = 0; i < symtab_hdr->sh_info; i++)
3656 {
3657 if (local_plt[i].plt.offset != (bfd_vma) -1)
3658 {
3659 asection *sec = local_plt[i].sec;
3660 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3661 if (isym == NULL)
3662 return FALSE;
3663
3664 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3665 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3666 local_plt[i].plt.offset,
3667 isym->st_value
3668 + sec->output_section->vma
3669 + sec->output_offset);
3670
3671 }
3672 }
3673 }
3674
b34976b6 3675 return TRUE;
a85d7ed0 3676}
e3e9290d
AA		 3677\f
3678/* Support for core dump NOTE sections. */
a85d7ed0 3679
e3e9290d
AA		 3680static bfd_boolean
3681elf_s390_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3682{
3683 int offset;
3684 size_t size;
3685
3686 switch (note->descsz)
3687 {
3688 default:
3689 return FALSE;
3690
3691 case 336: /* sizeof(struct elf_prstatus) on s390x */
3692 /* pr_cursig */
3693 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
3694
3695 /* pr_pid */
3696 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
3697
3698 /* pr_reg */
3699 offset = 112;
3700 size = 216;
3701 break;
3702 }
3703
3704 /* Make a ".reg/999" section. */
3705 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3706 size, note->descpos + offset);
3707}
3708
3709static bfd_boolean
3710elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3711{
3712 switch (note->descsz)
3713 {
3714 default:
3715 return FALSE;
3716
3717 case 136: /* sizeof(struct elf_prpsinfo) on s390x */
3718 elf_tdata (abfd)->core->pid
3719 = bfd_get_32 (abfd, note->descdata + 24);
3720 elf_tdata (abfd)->core->program
3721 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
3722 elf_tdata (abfd)->core->command
3723 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
3724 }
3725
3726 /* Note that for some reason, a spurious space is tacked
3727 onto the end of the args in some (at least one anyway)
3728 implementations, so strip it off if it exists. */
3729
3730 {
3731 char *command = elf_tdata (abfd)->core->command;
3732 int n = strlen (command);
3733
3734 if (0 < n && command[n - 1] == ' ')
3735 command[n - 1] = '\0';
3736 }
3737
3738 return TRUE;
3739}
3740
3741static char *
3742elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
3743 int note_type, ...)
3744{
3745 va_list ap;
3746
3747 switch (note_type)
3748 {
3749 default:
3750 return NULL;
3751
3752 case NT_PRPSINFO:
3753 {
602f1657 3754 char data[136] ATTRIBUTE_NONSTRING = { 0 };
e3e9290d
AA		 3755 const char *fname, *psargs;
3756
3757 va_start (ap, note_type);
3758 fname = va_arg (ap, const char *);
3759 psargs = va_arg (ap, const char *);
3760 va_end (ap);
3761
3762 strncpy (data + 40, fname, 16);
fe75810f 3763#if GCC_VERSION == 8001
95da9854
L		 3764 DIAGNOSTIC_PUSH;
3765 /* GCC 8.1 warns about 80 equals destination size with
3766 -Wstringop-truncation:
3767 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643
3768 */
95da9854
L		 3769 DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION;
3770#endif
e3e9290d 3771 strncpy (data + 56, psargs, 80);
fe75810f 3772#if GCC_VERSION == 8001
95da9854 3773 DIAGNOSTIC_POP;
fe75810f 3774#endif
e3e9290d
AA		 3775 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3776 &data, sizeof (data));
3777 }
3778
3779 case NT_PRSTATUS:
3780 {
3781 char data[336] = { 0 };
3782 long pid;
3783 int cursig;
3784 const void *gregs;
3785
3786 va_start (ap, note_type);
3787 pid = va_arg (ap, long);
3788 cursig = va_arg (ap, int);
3789 gregs = va_arg (ap, const void *);
3790 va_end (ap);
3791
3792 bfd_put_16 (abfd, cursig, data + 12);
3793 bfd_put_32 (abfd, pid, data + 32);
3794 memcpy (data + 112, gregs, 216);
3795 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3796 &data, sizeof (data));
3797 }
3798 }
3799 /* NOTREACHED */
3800}
3801\f
4c45e5c9
JJ		 3802/* Return address for Ith PLT stub in section PLT, for relocation REL
3803 or (bfd_vma) -1 if it should not be included. */
3804
3805static bfd_vma
3806elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3807 const arelent *rel ATTRIBUTE_UNUSED)
3808{
3809 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3810}
3811
643f7afb
AK		 3812/* Merge backend specific data from an object file to the output
3813 object file when linking. */
3814
3815static bfd_boolean
50e03d47 3816elf64_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
643f7afb 3817{
50e03d47 3818 if (!is_s390_elf (ibfd) || !is_s390_elf (info->output_bfd))
643f7afb
AK		 3819 return TRUE;
3820
50e03d47 3821 return elf_s390_merge_obj_attributes (ibfd, info);
643f7afb
AK		 3822}
3823
b4cbbe8f
AK		 3824/* We may add a PT_S390_PGSTE program header. */
3825
3826static int
3827elf_s390_additional_program_headers (bfd *abfd ATTRIBUTE_UNUSED,
3828 struct bfd_link_info *info)
3829{
3830 struct elf_s390_link_hash_table *htab;
3831
93ec5e23
AK		 3832 if (info)
3833 {
3834 htab = elf_s390_hash_table (info);
3835 if (htab)
3836 return htab->params->pgste;
3837 }
3838 return 0;
b4cbbe8f
AK		 3839}
3840
3841
3842/* Add the PT_S390_PGSTE program header. */
3843
3844static bfd_boolean
93ec5e23 3845elf_s390_modify_segment_map (bfd *abfd, struct bfd_link_info *info)
b4cbbe8f
AK		 3846{
3847 struct elf_s390_link_hash_table *htab;
3848 struct elf_segment_map *m, *pm = NULL;
3849
93ec5e23
AK		 3850 if (!abfd || !info)
3851 return TRUE;
3852
b4cbbe8f 3853 htab = elf_s390_hash_table (info);
93ec5e23 3854 if (!htab || !htab->params->pgste)
b4cbbe8f
AK		 3855 return TRUE;
3856
3857 /* If there is already a PT_S390_PGSTE header, avoid adding
3858 another. */
3859 m = elf_seg_map (abfd);
3860 while (m && m->p_type != PT_S390_PGSTE)
3861 {
3862 pm = m;
3863 m = m->next;
3864 }
3865
3866 if (m)
3867 return TRUE;
3868
3869 m = (struct elf_segment_map *)
3870 bfd_zalloc (abfd, sizeof (struct elf_segment_map));
3871 if (m == NULL)
3872 return FALSE;
3873 m->p_type = PT_S390_PGSTE;
3874 m->count = 0;
3875 m->next = NULL;
3876 if (pm)
3877 pm->next = m;
3878
3879 return TRUE;
3880}
3881
3882bfd_boolean
3883bfd_elf_s390_set_options (struct bfd_link_info *info,
3884 struct s390_elf_params *params)
3885{
3886 struct elf_s390_link_hash_table *htab;
3887
93ec5e23
AK		 3888 if (info)
3889 {
3890 htab = elf_s390_hash_table (info);
3891 if (htab)
3892 htab->params = params;
3893 }
b4cbbe8f
AK		 3894
3895 return TRUE;
3896}
3897
3898
ae9a127f
NC		 3899/* Why was the hash table entry size definition changed from
3900 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3901 this is the only reason for the s390_elf64_size_info structure. */
a85d7ed0
NC		 3902
3903const struct elf_size_info s390_elf64_size_info =
3904{
3905 sizeof (Elf64_External_Ehdr),
3906 sizeof (Elf64_External_Phdr),
3907 sizeof (Elf64_External_Shdr),
3908 sizeof (Elf64_External_Rel),
3909 sizeof (Elf64_External_Rela),
3910 sizeof (Elf64_External_Sym),
3911 sizeof (Elf64_External_Dyn),
3912 sizeof (Elf_External_Note),
ae9a127f
NC		 3913 8, /* hash-table entry size. */
3914 1, /* internal relocations per external relocations. */
3915 64, /* arch_size. */
45d6a902 3916 3, /* log_file_align. */
a85d7ed0
NC		 3917 ELFCLASS64, EV_CURRENT,
3918 bfd_elf64_write_out_phdrs,
3919 bfd_elf64_write_shdrs_and_ehdr,
1489a3a0 3920 bfd_elf64_checksum_contents,
a85d7ed0 3921 bfd_elf64_write_relocs,
73ff0d56 3922 bfd_elf64_swap_symbol_in,
a85d7ed0
NC		 3923 bfd_elf64_swap_symbol_out,
3924 bfd_elf64_slurp_reloc_table,
3925 bfd_elf64_slurp_symbol_table,
3926 bfd_elf64_swap_dyn_in,
3927 bfd_elf64_swap_dyn_out,
947216bf
AM		 3928 bfd_elf64_swap_reloc_in,
3929 bfd_elf64_swap_reloc_out,
3930 bfd_elf64_swap_reloca_in,
3931 bfd_elf64_swap_reloca_out
a85d7ed0
NC		 3932};
3933
6d00b590 3934#define TARGET_BIG_SYM s390_elf64_vec
a85d7ed0
NC		 3935#define TARGET_BIG_NAME "elf64-s390"
3936#define ELF_ARCH bfd_arch_s390
ae95ffa6 3937#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 3938#define ELF_MACHINE_CODE EM_S390
3939#define ELF_MACHINE_ALT1 EM_S390_OLD
3940#define ELF_MAXPAGESIZE 0x1000
3941
3942#define elf_backend_size_info s390_elf64_size_info
3943
3944#define elf_backend_can_gc_sections 1
51b64d56 3945#define elf_backend_can_refcount 1
a85d7ed0
NC		 3946#define elf_backend_want_got_plt 1
3947#define elf_backend_plt_readonly 1
3948#define elf_backend_want_plt_sym 0
3949#define elf_backend_got_header_size 24
5474d94f 3950#define elf_backend_want_dynrelro 1
b491616a 3951#define elf_backend_rela_normal 1
a85d7ed0
NC		 3952
3953#define elf_info_to_howto elf_s390_info_to_howto
3954
a85d7ed0
NC		 3955#define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3956#define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3957#define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
07d6d2b8 3958#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
643f7afb 3959#define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
a85d7ed0
NC		 3960
3961#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3962#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c 3963#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
9d19e4fd 3964#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
a85d7ed0
NC		 3965#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3966#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3967#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
0451c93c 3968#define elf_backend_reloc_type_class elf_s390_reloc_type_class
a85d7ed0
NC		 3969#define elf_backend_relocate_section elf_s390_relocate_section
3970#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 3971#define elf_backend_init_index_section _bfd_elf_init_1_index_section
e3e9290d
AA		 3972#define elf_backend_grok_prstatus elf_s390_grok_prstatus
3973#define elf_backend_grok_psinfo elf_s390_grok_psinfo
3974#define elf_backend_write_core_note elf_s390_write_core_note
4c45e5c9 3975#define elf_backend_plt_sym_val elf_s390_plt_sym_val
07d6d2b8 3976#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
b4cbbe8f
AK		 3977#define elf_backend_additional_program_headers elf_s390_additional_program_headers
3978#define elf_backend_modify_segment_map elf_s390_modify_segment_map
a85d7ed0 3979
69fc87f1
MS		 3980#define bfd_elf64_mkobject elf_s390_mkobject
3981#define elf_backend_object_p elf_s390_object_p
a85d7ed0
NC		 3982
3983#include "elf64-target.h"
GDB Binutils - Deliverables
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