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ld: Pass -fno-sanitize=all to tests with linker
[deliverable/binutils-gdb.git] / bfd / elf64-s390.c
CommitLineData
a85d7ed0 1/* IBM S/390-specific support for 64-bit ELF
b3adc24a 2 Copyright (C) 2000-2020 Free Software Foundation, Inc.
a85d7ed0
NC		 3 Contributed Martin Schwidefsky (schwidefsky@de.ibm.com).
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
a85d7ed0
NC		 10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
3e110533 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
53e09e0a 20 02110-1301, USA. */
a85d7ed0 21
a85d7ed0 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
a85d7ed0
NC		 24#include "bfdlink.h"
25#include "libbfd.h"
26#include "elf-bfd.h"
a85d7ed0 27#include "elf/s390.h"
b4cbbe8f 28#include "elf-s390.h"
e3e9290d 29#include <stdarg.h>
a85d7ed0
NC		 30
31/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
32 from smaller values. Start with zero, widen, *then* decrement. */
33#define MINUS_ONE (((bfd_vma)0) - 1)
34
2c3fc389
NC		 35static bfd_reloc_status_type
36s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
37 asection *, bfd *, char **);
38static bfd_reloc_status_type
39s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
40 asection *, bfd *, char **);
41
a85d7ed0
NC		 42/* The relocation "howto" table. */
43static reloc_howto_type elf_howto_table[] =
44{
45 HOWTO (R_390_NONE, /* type */
46 0, /* rightshift */
6346d5ca 47 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
a85d7ed0 48 0, /* bitsize */
b34976b6 49 FALSE, /* pc_relative */
a85d7ed0
NC		 50 0, /* bitpos */
51 complain_overflow_dont, /* complain_on_overflow */
52 bfd_elf_generic_reloc, /* special_function */
53 "R_390_NONE", /* name */
b34976b6 54 FALSE, /* partial_inplace */
a85d7ed0
NC		 55 0, /* src_mask */
56 0, /* dst_mask */
b34976b6
AM		 57 FALSE), /* pcrel_offset */
58
07d6d2b8
AM		 59 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
60 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
61 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
62 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
63 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
64 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
65 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
66 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
5236c819 67 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8 68 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
15f8604d 69 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
07d6d2b8 70 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
5236c819 71 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
07d6d2b8 72 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
5236c819 73 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8
AM		 74 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
75 HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
76 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE),
77 HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
5236c819 78 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE),
07d6d2b8 79 HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
5236c819 80 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE),
07d6d2b8 81 HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
5236c819 82 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE),
07d6d2b8 83 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
5236c819 84 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE),
07d6d2b8
AM		 85 HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
86 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE),
87 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
88 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
89 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
90 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
91 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
92 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
93 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
5236c819
MS		 94 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
95 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8 96 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
5236c819
MS		 97 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
98 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
07d6d2b8 99 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
5236c819 100 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
07d6d2b8
AM		 101 HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
102 bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE),
5236c819 103 HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
07d6d2b8 104 bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
5236c819 105 HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
07d6d2b8 106 bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
5236c819 107 HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
07d6d2b8 108 bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
5236c819 109 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8
AM		 110 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE),
111 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
5236c819 112 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
07d6d2b8 113 HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 114 bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE),
115 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
116 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
07d6d2b8 117 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 118 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
119 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
120 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
121 HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
122 bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE),
123 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
124 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE),
07d6d2b8 125 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
5236c819 126 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
07d6d2b8 127 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
5236c819 128 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
07d6d2b8 129 HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
5236c819 130 bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE),
69fc87f1
MS		 131 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
132 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
133 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
134 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
135 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
136 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
137 EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */
07d6d2b8 138 HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
69fc87f1
MS		 139 bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
140 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
141 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
142 EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */
143 HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
144 bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
145 EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */
146 HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
147 bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
148 EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */
07d6d2b8 149 HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
69fc87f1
MS		 150 bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
151 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
152 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
153 EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */
07d6d2b8 154 HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
69fc87f1
MS		 155 bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
156 EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */
157 HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
158 bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
159 HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
160 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
161 HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
162 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
163 HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
164 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
07d6d2b8 165 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
bd1ea41b
MS		 166 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
167 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
168 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
07d6d2b8 169 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
bd1ea41b
MS		 170 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
171 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
172 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
470b557a
AK		 173 HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
174 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE),
07d6d2b8
AM		 175 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
176 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
177 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
fb798c50 178 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
07d6d2b8
AM		 179 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
180 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
181 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
fb798c50 182 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
a85d7ed0
NC		 183};
184
185/* GNU extension to record C++ vtable hierarchy. */
186static reloc_howto_type elf64_s390_vtinherit_howto =
b34976b6 187 HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
a85d7ed0 188static reloc_howto_type elf64_s390_vtentry_howto =
b34976b6 189 HOWTO (R_390_GNU_VTENTRY, 0,4,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
a85d7ed0
NC		 190
191static reloc_howto_type *
f3185997 192elf_s390_reloc_type_lookup (bfd *abfd,
2c3fc389 193 bfd_reloc_code_real_type code)
a85d7ed0 194{
0451c93c
MS		 195 switch (code)
196 {
197 case BFD_RELOC_NONE:
198 return &elf_howto_table[(int) R_390_NONE];
199 case BFD_RELOC_8:
200 return &elf_howto_table[(int) R_390_8];
201 case BFD_RELOC_390_12:
202 return &elf_howto_table[(int) R_390_12];
203 case BFD_RELOC_16:
204 return &elf_howto_table[(int) R_390_16];
205 case BFD_RELOC_32:
206 return &elf_howto_table[(int) R_390_32];
207 case BFD_RELOC_CTOR:
208 return &elf_howto_table[(int) R_390_32];
209 case BFD_RELOC_32_PCREL:
210 return &elf_howto_table[(int) R_390_PC32];
211 case BFD_RELOC_390_GOT12:
212 return &elf_howto_table[(int) R_390_GOT12];
213 case BFD_RELOC_32_GOT_PCREL:
214 return &elf_howto_table[(int) R_390_GOT32];
215 case BFD_RELOC_390_PLT32:
216 return &elf_howto_table[(int) R_390_PLT32];
217 case BFD_RELOC_390_COPY:
218 return &elf_howto_table[(int) R_390_COPY];
219 case BFD_RELOC_390_GLOB_DAT:
220 return &elf_howto_table[(int) R_390_GLOB_DAT];
221 case BFD_RELOC_390_JMP_SLOT:
222 return &elf_howto_table[(int) R_390_JMP_SLOT];
223 case BFD_RELOC_390_RELATIVE:
224 return &elf_howto_table[(int) R_390_RELATIVE];
225 case BFD_RELOC_32_GOTOFF:
5236c819 226 return &elf_howto_table[(int) R_390_GOTOFF32];
0451c93c
MS		 227 case BFD_RELOC_390_GOTPC:
228 return &elf_howto_table[(int) R_390_GOTPC];
229 case BFD_RELOC_390_GOT16:
230 return &elf_howto_table[(int) R_390_GOT16];
231 case BFD_RELOC_16_PCREL:
232 return &elf_howto_table[(int) R_390_PC16];
fb798c50
AK		 233 case BFD_RELOC_390_PC12DBL:
234 return &elf_howto_table[(int) R_390_PC12DBL];
235 case BFD_RELOC_390_PLT12DBL:
236 return &elf_howto_table[(int) R_390_PLT12DBL];
0451c93c
MS		 237 case BFD_RELOC_390_PC16DBL:
238 return &elf_howto_table[(int) R_390_PC16DBL];
239 case BFD_RELOC_390_PLT16DBL:
240 return &elf_howto_table[(int) R_390_PLT16DBL];
fb798c50
AK		 241 case BFD_RELOC_390_PC24DBL:
242 return &elf_howto_table[(int) R_390_PC24DBL];
243 case BFD_RELOC_390_PLT24DBL:
244 return &elf_howto_table[(int) R_390_PLT24DBL];
0451c93c
MS		 245 case BFD_RELOC_390_PC32DBL:
246 return &elf_howto_table[(int) R_390_PC32DBL];
247 case BFD_RELOC_390_PLT32DBL:
248 return &elf_howto_table[(int) R_390_PLT32DBL];
249 case BFD_RELOC_390_GOTPCDBL:
250 return &elf_howto_table[(int) R_390_GOTPCDBL];
251 case BFD_RELOC_64:
252 return &elf_howto_table[(int) R_390_64];
253 case BFD_RELOC_64_PCREL:
254 return &elf_howto_table[(int) R_390_PC64];
255 case BFD_RELOC_390_GOT64:
256 return &elf_howto_table[(int) R_390_GOT64];
257 case BFD_RELOC_390_PLT64:
258 return &elf_howto_table[(int) R_390_PLT64];
259 case BFD_RELOC_390_GOTENT:
260 return &elf_howto_table[(int) R_390_GOTENT];
5236c819
MS		 261 case BFD_RELOC_16_GOTOFF:
262 return &elf_howto_table[(int) R_390_GOTOFF16];
263 case BFD_RELOC_390_GOTOFF64:
264 return &elf_howto_table[(int) R_390_GOTOFF64];
265 case BFD_RELOC_390_GOTPLT12:
266 return &elf_howto_table[(int) R_390_GOTPLT12];
267 case BFD_RELOC_390_GOTPLT16:
268 return &elf_howto_table[(int) R_390_GOTPLT16];
269 case BFD_RELOC_390_GOTPLT32:
270 return &elf_howto_table[(int) R_390_GOTPLT32];
271 case BFD_RELOC_390_GOTPLT64:
272 return &elf_howto_table[(int) R_390_GOTPLT64];
273 case BFD_RELOC_390_GOTPLTENT:
274 return &elf_howto_table[(int) R_390_GOTPLTENT];
275 case BFD_RELOC_390_PLTOFF16:
276 return &elf_howto_table[(int) R_390_PLTOFF16];
277 case BFD_RELOC_390_PLTOFF32:
278 return &elf_howto_table[(int) R_390_PLTOFF32];
279 case BFD_RELOC_390_PLTOFF64:
280 return &elf_howto_table[(int) R_390_PLTOFF64];
69fc87f1
MS		 281 case BFD_RELOC_390_TLS_LOAD:
282 return &elf_howto_table[(int) R_390_TLS_LOAD];
283 case BFD_RELOC_390_TLS_GDCALL:
284 return &elf_howto_table[(int) R_390_TLS_GDCALL];
285 case BFD_RELOC_390_TLS_LDCALL:
286 return &elf_howto_table[(int) R_390_TLS_LDCALL];
287 case BFD_RELOC_390_TLS_GD64:
288 return &elf_howto_table[(int) R_390_TLS_GD64];
289 case BFD_RELOC_390_TLS_GOTIE12:
290 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
291 case BFD_RELOC_390_TLS_GOTIE64:
292 return &elf_howto_table[(int) R_390_TLS_GOTIE64];
293 case BFD_RELOC_390_TLS_LDM64:
294 return &elf_howto_table[(int) R_390_TLS_LDM64];
295 case BFD_RELOC_390_TLS_IE64:
296 return &elf_howto_table[(int) R_390_TLS_IE64];
297 case BFD_RELOC_390_TLS_IEENT:
298 return &elf_howto_table[(int) R_390_TLS_IEENT];
299 case BFD_RELOC_390_TLS_LE64:
300 return &elf_howto_table[(int) R_390_TLS_LE64];
301 case BFD_RELOC_390_TLS_LDO64:
302 return &elf_howto_table[(int) R_390_TLS_LDO64];
303 case BFD_RELOC_390_TLS_DTPMOD:
304 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
305 case BFD_RELOC_390_TLS_DTPOFF:
306 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
307 case BFD_RELOC_390_TLS_TPOFF:
308 return &elf_howto_table[(int) R_390_TLS_TPOFF];
bd1ea41b
MS		 309 case BFD_RELOC_390_20:
310 return &elf_howto_table[(int) R_390_20];
311 case BFD_RELOC_390_GOT20:
312 return &elf_howto_table[(int) R_390_GOT20];
313 case BFD_RELOC_390_GOTPLT20:
314 return &elf_howto_table[(int) R_390_GOTPLT20];
315 case BFD_RELOC_390_TLS_GOTIE20:
316 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
470b557a
AK		 317 case BFD_RELOC_390_IRELATIVE:
318 return &elf_howto_table[(int) R_390_IRELATIVE];
5236c819
MS		 319 case BFD_RELOC_VTABLE_INHERIT:
320 return &elf64_s390_vtinherit_howto;
321 case BFD_RELOC_VTABLE_ENTRY:
322 return &elf64_s390_vtentry_howto;
0451c93c
MS		 323 default:
324 break;
325 }
f3185997
NC		 326
327 /* xgettext:c-format */
e8f5af78 328 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, (int) code);
f3185997
NC		 329 bfd_set_error (bfd_error_bad_value);
330 return NULL;
a85d7ed0
NC		 331}
332
157090f7
AM		 333static reloc_howto_type *
334elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
335 const char *r_name)
336{
337 unsigned int i;
338
339 for (i = 0;
340 i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
341 i++)
342 if (elf_howto_table[i].name != NULL
343 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
344 return &elf_howto_table[i];
345
0bc7245a
JK		 346 if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
347 return &elf64_s390_vtinherit_howto;
348 if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
349 return &elf64_s390_vtentry_howto;
157090f7
AM		 350
351 return NULL;
352}
353
a85d7ed0
NC		 354/* We need to use ELF64_R_TYPE so we have our own copy of this function,
355 and elf64-s390.c has its own copy. */
356
f3185997 357static bfd_boolean
2c3fc389
NC		 358elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
359 arelent *cache_ptr,
360 Elf_Internal_Rela *dst)
a85d7ed0 361{
d0fb9a8d 362 unsigned int r_type = ELF64_R_TYPE(dst->r_info);
f3185997 363
d0fb9a8d 364 switch (r_type)
a85d7ed0
NC		 365 {
366 case R_390_GNU_VTINHERIT:
367 cache_ptr->howto = &elf64_s390_vtinherit_howto;
368 break;
369
370 case R_390_GNU_VTENTRY:
371 cache_ptr->howto = &elf64_s390_vtentry_howto;
372 break;
373
374 default:
d0fb9a8d
JJ		 375 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
376 {
695344c0 377 /* xgettext:c-format */
0aa13fee
AM		 378 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
379 abfd, r_type);
f3185997
NC		 380 bfd_set_error (bfd_error_bad_value);
381 return FALSE;
d0fb9a8d
JJ		 382 }
383 cache_ptr->howto = &elf_howto_table[r_type];
99c79b2e 384 }
f3185997 385 return TRUE;
a85d7ed0
NC		 386}
387
69fc87f1
MS		 388/* A relocation function which doesn't do anything. */
389static bfd_reloc_status_type
2c3fc389
NC		 390s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
391 arelent *reloc_entry,
392 asymbol *symbol ATTRIBUTE_UNUSED,
393 void * data ATTRIBUTE_UNUSED,
394 asection *input_section,
395 bfd *output_bfd,
396 char **error_message ATTRIBUTE_UNUSED)
69fc87f1
MS		 397{
398 if (output_bfd)
399 reloc_entry->address += input_section->output_offset;
400 return bfd_reloc_ok;
401}
402
bd1ea41b
MS		 403/* Handle the large displacement relocs. */
404static bfd_reloc_status_type
2c3fc389
NC		 405s390_elf_ldisp_reloc (bfd *abfd,
406 arelent *reloc_entry,
407 asymbol *symbol,
408 void * data,
409 asection *input_section,
410 bfd *output_bfd,
411 char **error_message ATTRIBUTE_UNUSED)
bd1ea41b
MS		 412{
413 reloc_howto_type *howto = reloc_entry->howto;
414 bfd_vma relocation;
415 bfd_vma insn;
416
417 if (output_bfd != (bfd *) NULL
418 && (symbol->flags & BSF_SECTION_SYM) == 0
419 && (! howto->partial_inplace
420 || reloc_entry->addend == 0))
421 {
422 reloc_entry->address += input_section->output_offset;
423 return bfd_reloc_ok;
424 }
425 if (output_bfd != NULL)
426 return bfd_reloc_continue;
427
07515404 428 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b
MS		 429 return bfd_reloc_outofrange;
430
431 relocation = (symbol->value
432 + symbol->section->output_section->vma
433 + symbol->section->output_offset);
434 relocation += reloc_entry->addend;
435 if (howto->pc_relative)
436 {
437 relocation -= (input_section->output_section->vma
438 + input_section->output_offset);
439 relocation -= reloc_entry->address;
440 }
441
68ffbac6 442 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
bd1ea41b
MS		 443 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
444 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
445
446 if ((bfd_signed_vma) relocation < - 0x80000
447 || (bfd_signed_vma) relocation > 0x7ffff)
448 return bfd_reloc_overflow;
449 else
450 return bfd_reloc_ok;
451}
452
b34976b6 453static bfd_boolean
2c3fc389 454elf_s390_is_local_label_name (bfd *abfd, const char *name)
a85d7ed0
NC		 455{
456 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 457 return TRUE;
a85d7ed0
NC		 458
459 return _bfd_elf_is_local_label_name (abfd, name);
460}
461
462/* Functions for the 390 ELF linker. */
463
464/* The name of the dynamic interpreter. This is put in the .interp
465 section. */
466
87049b0d 467#define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
a85d7ed0 468
64285810
MS		 469/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
470 copying dynamic variables from a shared lib into an app's dynbss
471 section, and instead use a dynamic relocation to point into the
472 shared lib. */
473#define ELIMINATE_COPY_RELOCS 1
474
a85d7ed0
NC		 475/* The size in bytes of the first entry in the procedure linkage table. */
476#define PLT_FIRST_ENTRY_SIZE 32
477/* The size in bytes of an entry in the procedure linkage table. */
99c79b2e 478#define PLT_ENTRY_SIZE 32
a85d7ed0
NC		 479
480#define GOT_ENTRY_SIZE 8
481
470b557a
AK		 482#define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela)
483
afca762f 484/* The first three entries in a global offset table are reserved,
a85d7ed0
NC		 485 and the initial contents are unimportant (we zero them out).
486 Subsequent entries look like this. See the SVR4 ABI 386
487 supplement to see how this works. */
488
489/* For the s390, simple addr offset can only be 0 - 4096.
490 To use the full 16777216 TB address space, several instructions
491 are needed to load an address in a register and execute
492 a branch( or just saving the address)
493
99c79b2e 494 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC		 495
496/* The first 3 words in the GOT are then reserved.
497 Word 0 is the address of the dynamic table.
498 Word 1 is a pointer to a structure describing the object
499 Word 2 is used to point to the loader entry address.
500
501 The code for PLT entries looks like this:
502
503 The GOT holds the address in the PLT to be executed.
504 The loader then gets:
3b67f094
MK		 505 48(15) = Pointer to the structure describing the object.
506 56(15) = Offset in symbol table
a85d7ed0
NC		 507 The loader must then find the module where the function is
508 and insert the address in the GOT.
509
510 PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
07d6d2b8
AM		 511 LG 1,0(1) # 6 bytes Load address from GOT in r1
512 BCR 15,1 # 2 bytes Jump to address
513 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
afca762f
AK		 514 LGF 1,12(1) # 6 bytes Load rela.plt offset into r1
515 BRCL 15,-x # 6 bytes Jump to first PLT entry
07d6d2b8 516 .long ? # 4 bytes offset into .rela.plt
a85d7ed0
NC		 517
518 Total = 32 bytes per PLT entry
519 Fixup at offset 2: relative address to GOT entry
520 Fixup at offset 22: relative branch to PLT0
a7e28bbe 521 Fixup at offset 28: 32 bit offset into .rela.plt
a85d7ed0 522
a7e28bbe
AK		 523 A 32 bit offset into the symbol table is enough. It allows for
524 .rela.plt sections up to a size of 2 gigabyte. A single dynamic
525 object (the main program, any shared library) is limited to 4GB in
526 size. Having a .rela.plt of 2GB would already make the .plt
527 section bigger than 8GB. */
a85d7ed0 528
9aa17453
AK		 529static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] =
530 {
07d6d2b8
AM		 531 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
532 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */
533 0x07, 0xf1, /* br %r1 */
534 0x0d, 0x10, /* basr %r1,%r0 */
535 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */
536 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */
537 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */
9aa17453 538 };
a85d7ed0
NC		 539
540/* The first PLT entry pushes the offset into the symbol table
a7e28bbe
AK		 541 from R1 onto the stack at 56(15) and the loader object info
542 at 48(15), loads the loader address in R1 and jumps to it. */
a85d7ed0
NC		 543
544/* The first entry in the PLT:
545
546 PLT0:
547 STG 1,56(15) # r1 contains the offset into the symbol table
548 LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
549 MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
550 LG 1,16(1) # get entry address of loader
551 BCR 15,1 # jump to loader
552
553 Fixup at offset 8: relative address to start of GOT. */
554
9aa17453
AK		 555static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] =
556 {
07d6d2b8
AM		 557 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */
558 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
559 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */
560 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */
561 0x07, 0xf1, /* br %r1 */
562 0x07, 0x00, /* nopr %r0 */
563 0x07, 0x00, /* nopr %r0 */
564 0x07, 0x00 /* nopr %r0 */
9aa17453 565 };
a85d7ed0 566
a85d7ed0
NC		 567
568/* s390 ELF linker hash entry. */
569
570struct elf_s390_link_hash_entry
571{
0451c93c 572 struct elf_link_hash_entry elf;
a85d7ed0 573
5236c819
MS		 574 /* Number of GOTPLT references for a function. */
575 bfd_signed_vma gotplt_refcount;
69fc87f1
MS		 576
577#define GOT_UNKNOWN 0
578#define GOT_NORMAL 1
579#define GOT_TLS_GD 2
580#define GOT_TLS_IE 3
581#define GOT_TLS_IE_NLT 3
582 unsigned char tls_type;
470b557a
AK		 583
584 /* For pointer equality reasons we might need to change the symbol
585 type from STT_GNU_IFUNC to STT_FUNC together with its value and
586 section entry. So after alloc_dynrelocs only these values should
587 be used. In order to check whether a symbol is IFUNC use
588 s390_is_ifunc_symbol_p. */
589 bfd_vma ifunc_resolver_address;
590 asection *ifunc_resolver_section;
a85d7ed0
NC		 591};
592
69fc87f1
MS		 593#define elf_s390_hash_entry(ent) \
594 ((struct elf_s390_link_hash_entry *)(ent))
595
470b557a
AK		 596/* This structure represents an entry in the local PLT list needed for
597 local IFUNC symbols. */
598struct plt_entry
599{
600 /* The section of the local symbol.
601 Set in relocate_section and used in finish_dynamic_sections. */
602 asection *sec;
603
604 union
605 {
606 bfd_signed_vma refcount;
607 bfd_vma offset;
608 } plt;
609};
610
0ffa91dd
NC		 611/* NOTE: Keep this structure in sync with
612 the one declared in elf32-s390.c. */
69fc87f1
MS		 613struct elf_s390_obj_tdata
614{
615 struct elf_obj_tdata root;
616
470b557a
AK		 617 /* A local PLT is needed for ifunc symbols. */
618 struct plt_entry *local_plt;
619
0ffa91dd 620 /* TLS type for each local got entry. */
69fc87f1
MS		 621 char *local_got_tls_type;
622};
623
624#define elf_s390_tdata(abfd) \
625 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
626
470b557a
AK		 627#define elf_s390_local_plt(abfd) \
628 (elf_s390_tdata (abfd)->local_plt)
629
69fc87f1
MS		 630#define elf_s390_local_got_tls_type(abfd) \
631 (elf_s390_tdata (abfd)->local_got_tls_type)
632
0ffa91dd
NC		 633#define is_s390_elf(bfd) \
634 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
635 && elf_tdata (bfd) != NULL \
4dfe6ac6 636 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 637
69fc87f1 638static bfd_boolean
62d7a5f6 639elf_s390_mkobject (bfd *abfd)
69fc87f1 640{
0ffa91dd 641 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 642 S390_ELF_DATA);
69fc87f1
MS		 643}
644
645static bfd_boolean
2c3fc389 646elf_s390_object_p (bfd *abfd)
69fc87f1 647{
69fc87f1
MS		 648 /* Set the right machine number for an s390 elf32 file. */
649 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
650}
651
a85d7ed0
NC		 652/* s390 ELF linker hash table. */
653
654struct elf_s390_link_hash_table
655{
0451c93c 656 struct elf_link_hash_table elf;
a85d7ed0 657
0451c93c 658 /* Short-cuts to get to dynamic linker sections. */
470b557a 659 asection *irelifunc;
ec338859 660
69fc87f1
MS		 661 union {
662 bfd_signed_vma refcount;
663 bfd_vma offset;
664 } tls_ldm_got;
665
87d72d41
AM		 666 /* Small local sym cache. */
667 struct sym_cache sym_cache;
b4cbbe8f
AK		 668
669 /* Options passed from the linker. */
670 struct s390_elf_params *params;
0451c93c 671};
a85d7ed0
NC		 672
673/* Get the s390 ELF linker hash table from a link_info structure. */
674
ceada896
AA		 675#define elf_s390_hash_table(p) \
676 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
677 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
a85d7ed0 678
470b557a
AK		 679#define ELF64 1
680#include "elf-s390-common.c"
681
a85d7ed0
NC		 682/* Create an entry in an s390 ELF linker hash table. */
683
684static struct bfd_hash_entry *
2c3fc389
NC		 685link_hash_newfunc (struct bfd_hash_entry *entry,
686 struct bfd_hash_table *table,
687 const char *string)
a85d7ed0 688{
a85d7ed0
NC		 689 /* Allocate the structure if it has not already been allocated by a
690 subclass. */
0451c93c
MS		 691 if (entry == NULL)
692 {
693 entry = bfd_hash_allocate (table,
694 sizeof (struct elf_s390_link_hash_entry));
695 if (entry == NULL)
696 return entry;
697 }
a85d7ed0
NC		 698
699 /* Call the allocation method of the superclass. */
0451c93c
MS		 700 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
701 if (entry != NULL)
a85d7ed0 702 {
0451c93c
MS		 703 struct elf_s390_link_hash_entry *eh;
704
705 eh = (struct elf_s390_link_hash_entry *) entry;
5236c819 706 eh->gotplt_refcount = 0;
69fc87f1 707 eh->tls_type = GOT_UNKNOWN;
470b557a
AK		 708 eh->ifunc_resolver_address = 0;
709 eh->ifunc_resolver_section = NULL;
a85d7ed0
NC		 710 }
711
0451c93c 712 return entry;
a85d7ed0
NC		 713}
714
715/* Create an s390 ELF linker hash table. */
716
717static struct bfd_link_hash_table *
2c3fc389 718elf_s390_link_hash_table_create (bfd *abfd)
a85d7ed0
NC		 719{
720 struct elf_s390_link_hash_table *ret;
986f0783 721 size_t amt = sizeof (struct elf_s390_link_hash_table);
a85d7ed0 722
7bf52ea2 723 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
0451c93c 724 if (ret == NULL)
a85d7ed0
NC		 725 return NULL;
726
66eb6687 727 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 728 sizeof (struct elf_s390_link_hash_entry),
729 S390_ELF_DATA))
a85d7ed0 730 {
e2d34d7d 731 free (ret);
a85d7ed0
NC		 732 return NULL;
733 }
734
0451c93c
MS		 735 return &ret->elf.root;
736}
737
0451c93c
MS		 738/* Copy the extra info we tack onto an elf_link_hash_entry. */
739
740static void
2c3fc389
NC		 741elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
742 struct elf_link_hash_entry *dir,
743 struct elf_link_hash_entry *ind)
0451c93c
MS		 744{
745 struct elf_s390_link_hash_entry *edir, *eind;
746
747 edir = (struct elf_s390_link_hash_entry *) dir;
748 eind = (struct elf_s390_link_hash_entry *) ind;
749
190eb1dd 750 if (ind->dyn_relocs != NULL)
0451c93c 751 {
190eb1dd 752 if (dir->dyn_relocs != NULL)
0451c93c 753 {
00d8c7a9
AK		 754 struct elf_dyn_relocs **pp;
755 struct elf_dyn_relocs *p;
0451c93c 756
fcfa13d2 757 /* Add reloc counts against the indirect sym to the direct sym
0451c93c 758 list. Merge any entries against the same section. */
190eb1dd 759 for (pp = &ind->dyn_relocs; (p = *pp) != NULL; )
0451c93c 760 {
00d8c7a9 761 struct elf_dyn_relocs *q;
0451c93c 762
190eb1dd 763 for (q = dir->dyn_relocs; q != NULL; q = q->next)
0451c93c
MS		 764 if (q->sec == p->sec)
765 {
766 q->pc_count += p->pc_count;
767 q->count += p->count;
768 *pp = p->next;
769 break;
770 }
771 if (q == NULL)
772 pp = &p->next;
773 }
190eb1dd 774 *pp = dir->dyn_relocs;
0451c93c
MS		 775 }
776
190eb1dd
L		 777 dir->dyn_relocs = ind->dyn_relocs;
778 ind->dyn_relocs = NULL;
0451c93c
MS		 779 }
780
69fc87f1
MS		 781 if (ind->root.type == bfd_link_hash_indirect
782 && dir->got.refcount <= 0)
783 {
784 edir->tls_type = eind->tls_type;
785 eind->tls_type = GOT_UNKNOWN;
786 }
787
64285810
MS		 788 if (ELIMINATE_COPY_RELOCS
789 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 790 && dir->dynamic_adjusted)
791 {
792 /* If called to transfer flags for a weakdef during processing
793 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
794 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
e81830c5
AM		 795 if (dir->versioned != versioned_hidden)
796 dir->ref_dynamic |= ind->ref_dynamic;
f5385ebf
AM		 797 dir->ref_regular |= ind->ref_regular;
798 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
799 dir->needs_plt |= ind->needs_plt;
800 }
64285810 801 else
fcfa13d2 802 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 803}
a85d7ed0 804
69fc87f1 805static int
2c3fc389
NC		 806elf_s390_tls_transition (struct bfd_link_info *info,
807 int r_type,
808 int is_local)
69fc87f1 809{
0e1862bb 810 if (bfd_link_pic (info))
69fc87f1
MS		 811 return r_type;
812
813 switch (r_type)
814 {
815 case R_390_TLS_GD64:
816 case R_390_TLS_IE64:
817 if (is_local)
818 return R_390_TLS_LE64;
819 return R_390_TLS_IE64;
820 case R_390_TLS_GOTIE64:
821 if (is_local)
822 return R_390_TLS_LE64;
823 return R_390_TLS_GOTIE64;
824 case R_390_TLS_LDM64:
825 return R_390_TLS_LE64;
826 }
827
828 return r_type;
829}
830
a85d7ed0
NC		 831/* Look through the relocs for a section during the first phase, and
832 allocate space in the global offset table or procedure linkage
833 table. */
834
b34976b6 835static bfd_boolean
4dfe6ac6
NC		 836elf_s390_check_relocs (bfd *abfd,
837 struct bfd_link_info *info,
838 asection *sec,
839 const Elf_Internal_Rela *relocs)
a85d7ed0 840{
0451c93c 841 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 842 Elf_Internal_Shdr *symtab_hdr;
843 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 844 const Elf_Internal_Rela *rel;
845 const Elf_Internal_Rela *rel_end;
a85d7ed0 846 asection *sreloc;
5236c819 847 bfd_signed_vma *local_got_refcounts;
69fc87f1 848 int tls_type, old_tls_type;
a85d7ed0 849
0e1862bb 850 if (bfd_link_relocatable (info))
b34976b6 851 return TRUE;
a85d7ed0 852
0ffa91dd
NC		 853 BFD_ASSERT (is_s390_elf (abfd));
854
0451c93c 855 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 856 if (htab == NULL)
857 return FALSE;
858
0ffa91dd 859 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 860 sym_hashes = elf_sym_hashes (abfd);
5236c819 861 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 862
a85d7ed0
NC		 863 sreloc = NULL;
864
865 rel_end = relocs + sec->reloc_count;
866 for (rel = relocs; rel < rel_end; rel++)
867 {
69fc87f1 868 unsigned int r_type;
d42c267e 869 unsigned int r_symndx;
a85d7ed0 870 struct elf_link_hash_entry *h;
470b557a 871 Elf_Internal_Sym *isym;
a85d7ed0
NC		 872
873 r_symndx = ELF64_R_SYM (rel->r_info);
874
0451c93c
MS		 875 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
876 {
695344c0 877 /* xgettext:c-format */
871b3ab2 878 _bfd_error_handler (_("%pB: bad symbol index: %d"),
4eca0228 879 abfd, r_symndx);
b34976b6 880 return FALSE;
0451c93c
MS		 881 }
882
a85d7ed0 883 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK		 884 {
885 /* A local symbol. */
886 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
887 abfd, r_symndx);
888 if (isym == NULL)
889 return FALSE;
890
891 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
892 {
893 struct plt_entry *plt;
894
0cb79d69
AK		 895 if (htab->elf.dynobj == NULL)
896 htab->elf.dynobj = abfd;
897
470b557a
AK		 898 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
899 return FALSE;
900
901 if (local_got_refcounts == NULL)
902 {
903 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
904 return FALSE;
905 local_got_refcounts = elf_local_got_refcounts (abfd);
906 }
907 plt = elf_s390_local_plt (abfd);
908 plt[r_symndx].plt.refcount++;
909 }
910 h = NULL;
911 }
a85d7ed0 912 else
973a3492
L		 913 {
914 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
915 while (h->root.type == bfd_link_hash_indirect
916 || h->root.type == bfd_link_hash_warning)
917 h = (struct elf_link_hash_entry *) h->root.u.i.link;
918 }
a85d7ed0 919
5236c819
MS		 920 /* Create got section and local_got_refcounts array if they
921 are needed. */
69fc87f1
MS		 922 r_type = elf_s390_tls_transition (info,
923 ELF64_R_TYPE (rel->r_info),
924 h == NULL);
925 switch (r_type)
a85d7ed0
NC		 926 {
927 case R_390_GOT12:
947216bf 928 case R_390_GOT16:
bd1ea41b 929 case R_390_GOT20:
a85d7ed0
NC		 930 case R_390_GOT32:
931 case R_390_GOT64:
932 case R_390_GOTENT:
5236c819
MS		 933 case R_390_GOTPLT12:
934 case R_390_GOTPLT16:
bd1ea41b 935 case R_390_GOTPLT20:
5236c819
MS		 936 case R_390_GOTPLT32:
937 case R_390_GOTPLT64:
938 case R_390_GOTPLTENT:
69fc87f1
MS		 939 case R_390_TLS_GD64:
940 case R_390_TLS_GOTIE12:
bd1ea41b 941 case R_390_TLS_GOTIE20:
69fc87f1
MS		 942 case R_390_TLS_GOTIE64:
943 case R_390_TLS_IEENT:
944 case R_390_TLS_IE64:
945 case R_390_TLS_LDM64:
5236c819
MS		 946 if (h == NULL
947 && local_got_refcounts == NULL)
a85d7ed0 948 {
470b557a 949 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 950 return FALSE;
470b557a 951 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 952 }
470b557a 953
5236c819
MS		 954 /* Fall through. */
955 case R_390_GOTOFF16:
956 case R_390_GOTOFF32:
957 case R_390_GOTOFF64:
0451c93c
MS		 958 case R_390_GOTPC:
959 case R_390_GOTPCDBL:
f41345a7 960 if (htab->elf.sgot == NULL)
0451c93c
MS		 961 {
962 if (htab->elf.dynobj == NULL)
963 htab->elf.dynobj = abfd;
ce558b89 964 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
b34976b6 965 return FALSE;
0451c93c 966 }
5236c819
MS		 967 }
968
470b557a
AK		 969 if (h != NULL)
970 {
971 if (htab->elf.dynobj == NULL)
972 htab->elf.dynobj = abfd;
973 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
974 return FALSE;
975
976 /* Make sure an IFUNC symbol defined in a non-shared object
977 always gets a PLT slot. */
978 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
979 {
980 /* The symbol is called by the dynamic loader in order
981 to resolve the relocation. So it is in fact also
982 referenced. */
983 h->ref_regular = 1;
984 h->needs_plt = 1;
985 }
986 }
987
69fc87f1 988 switch (r_type)
5236c819 989 {
5236c819
MS		 990 case R_390_GOTPC:
991 case R_390_GOTPCDBL:
470b557a
AK		 992 /* These relocs do not need a GOT slot. They just load the
993 GOT pointer itself or address something else relative to
994 the GOT. Since the GOT pointer has been set up above we
995 are done. */
0451c93c 996 break;
d47b13e0
AK		 997 case R_390_GOTOFF16:
998 case R_390_GOTOFF32:
999 case R_390_GOTOFF64:
1000 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
1001 break;
1a0670f3 1002 /* Fall through. */
ec338859 1003
fb798c50 1004 case R_390_PLT12DBL:
947216bf 1005 case R_390_PLT16DBL:
fb798c50 1006 case R_390_PLT24DBL:
a85d7ed0
NC		 1007 case R_390_PLT32:
1008 case R_390_PLT32DBL:
1009 case R_390_PLT64:
5236c819
MS		 1010 case R_390_PLTOFF16:
1011 case R_390_PLTOFF32:
1012 case R_390_PLTOFF64:
a85d7ed0 1013 /* This symbol requires a procedure linkage table entry. We
947216bf
AM		 1014 actually build the entry in adjust_dynamic_symbol,
1015 because this might be a case of linking PIC code which is
1016 never referenced by a dynamic object, in which case we
1017 don't need to generate a procedure linkage table entry
1018 after all. */
ec338859 1019
a85d7ed0 1020 /* If this is a local symbol, we resolve it directly without
947216bf 1021 creating a procedure linkage table entry. */
5236c819
MS		 1022 if (h != NULL)
1023 {
f5385ebf 1024 h->needs_plt = 1;
5236c819
MS		 1025 h->plt.refcount += 1;
1026 }
1027 break;
ec338859 1028
5236c819
MS		 1029 case R_390_GOTPLT12:
1030 case R_390_GOTPLT16:
bd1ea41b 1031 case R_390_GOTPLT20:
5236c819
MS		 1032 case R_390_GOTPLT32:
1033 case R_390_GOTPLT64:
1034 case R_390_GOTPLTENT:
1035 /* This symbol requires either a procedure linkage table entry
1036 or an entry in the local got. We actually build the entry
1037 in adjust_dynamic_symbol because whether this is really a
1038 global reference can change and with it the fact if we have
1039 to create a plt entry or a local got entry. To be able to
1040 make a once global symbol a local one we have to keep track
1041 of the number of gotplt references that exist for this
1042 symbol. */
1043 if (h != NULL)
1044 {
1045 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1046 h->needs_plt = 1;
5236c819
MS		 1047 h->plt.refcount += 1;
1048 }
69fc87f1
MS		 1049 else
1050 local_got_refcounts[r_symndx] += 1;
1051 break;
1052
1053 case R_390_TLS_LDM64:
1054 htab->tls_ldm_got.refcount += 1;
1055 break;
1056
1057 case R_390_TLS_IE64:
1058 case R_390_TLS_GOTIE12:
bd1ea41b 1059 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1060 case R_390_TLS_GOTIE64:
1061 case R_390_TLS_IEENT:
0e1862bb 1062 if (bfd_link_pic (info))
69fc87f1
MS		 1063 info->flags |= DF_STATIC_TLS;
1064 /* Fall through */
1065
1066 case R_390_GOT12:
26e41594 1067 case R_390_GOT16:
bd1ea41b 1068 case R_390_GOT20:
69fc87f1
MS		 1069 case R_390_GOT32:
1070 case R_390_GOT64:
1071 case R_390_GOTENT:
1072 case R_390_TLS_GD64:
1073 /* This symbol requires a global offset table entry. */
1074 switch (r_type)
1075 {
1076 default:
1077 case R_390_GOT12:
1078 case R_390_GOT16:
bd1ea41b 1079 case R_390_GOT20:
69fc87f1
MS		 1080 case R_390_GOT32:
1081 case R_390_GOTENT:
1082 tls_type = GOT_NORMAL;
1083 break;
1084 case R_390_TLS_GD64:
1085 tls_type = GOT_TLS_GD;
1086 break;
1087 case R_390_TLS_IE64:
1088 case R_390_TLS_GOTIE64:
1089 tls_type = GOT_TLS_IE;
1090 break;
1091 case R_390_TLS_GOTIE12:
bd1ea41b 1092 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1093 case R_390_TLS_IEENT:
1094 tls_type = GOT_TLS_IE_NLT;
1095 break;
1096 }
1097
1098 if (h != NULL)
1099 {
1100 h->got.refcount += 1;
1101 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1102 }
5236c819
MS		 1103 else
1104 {
1105 local_got_refcounts[r_symndx] += 1;
69fc87f1 1106 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
5236c819 1107 }
69fc87f1
MS		 1108 /* If a TLS symbol is accessed using IE at least once,
1109 there is no point to use dynamic model for it. */
1110 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1111 {
1112 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1113 {
4eca0228 1114 _bfd_error_handler
695344c0 1115 /* xgettext:c-format */
871b3ab2 1116 (_("%pB: `%s' accessed both as normal and thread local symbol"),
d003868e 1117 abfd, h->root.root.string);
69fc87f1
MS		 1118 return FALSE;
1119 }
1120 if (old_tls_type > tls_type)
1121 tls_type = old_tls_type;
1122 }
1123
1124 if (old_tls_type != tls_type)
1125 {
1126 if (h != NULL)
1127 elf_s390_hash_entry (h)->tls_type = tls_type;
1128 else
1129 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1130 }
1131
1132 if (r_type != R_390_TLS_IE64)
1133 break;
1134 /* Fall through */
1135
1136 case R_390_TLS_LE64:
e00d879a
AK		 1137 /* For static linking and executables this reloc will be
1138 calculated at linktime otherwise a TLS_TPOFF runtime
1139 reloc will be generated. */
0e1862bb 1140 if (r_type == R_390_TLS_LE64 && bfd_link_pie (info))
e00d879a
AK		 1141 break;
1142
0e1862bb 1143 if (!bfd_link_pic (info))
69fc87f1
MS		 1144 break;
1145 info->flags |= DF_STATIC_TLS;
1146 /* Fall through */
ec338859 1147
947216bf
AM		 1148 case R_390_8:
1149 case R_390_16:
a85d7ed0
NC		 1150 case R_390_32:
1151 case R_390_64:
fb798c50 1152 case R_390_PC12DBL:
947216bf
AM		 1153 case R_390_PC16:
1154 case R_390_PC16DBL:
fb798c50 1155 case R_390_PC24DBL:
a85d7ed0
NC		 1156 case R_390_PC32:
1157 case R_390_PC32DBL:
1158 case R_390_PC64:
99ba5125 1159 if (h != NULL && bfd_link_executable (info))
0451c93c
MS		 1160 {
1161 /* If this reloc is in a read-only section, we might
1162 need a copy reloc. We can't check reliably at this
1163 stage whether the section is read-only, as input
1164 sections have not yet been mapped to output sections.
1165 Tentatively set the flag for now, and correct in
1166 adjust_dynamic_symbol. */
f5385ebf 1167 h->non_got_ref = 1;
ec338859 1168
0e1862bb 1169 if (!bfd_link_pic (info))
470b557a
AK		 1170 {
1171 /* We may need a .plt entry if the function this reloc
1172 refers to is in a shared lib. */
1173 h->plt.refcount += 1;
1174 }
0451c93c 1175 }
ec338859 1176
a85d7ed0 1177 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1178 against a global symbol, or a non PC relative reloc
1179 against a local symbol, then we need to copy the reloc
1180 into the shared library. However, if we are linking with
1181 -Bsymbolic, we do not need to copy a reloc against a
1182 global symbol which is defined in an object we are
1183 including in the link (i.e., DEF_REGULAR is set). At
1184 this point we have not seen all the input files, so it is
1185 possible that DEF_REGULAR is not set now but will be set
1186 later (it is never cleared). In case of a weak definition,
1187 DEF_REGULAR may be cleared later by a strong definition in
1188 a shared library. We account for that possibility below by
1189 storing information in the relocs_copied field of the hash
1190 table entry. A similar situation occurs when creating
1191 shared libraries and symbol visibility changes render the
1192 symbol local.
1193
1194 If on the other hand, we are creating an executable, we
1195 may need to keep relocations for symbols satisfied by a
1196 dynamic library if we manage to avoid copy relocs for the
1197 symbol. */
0e1862bb 1198 if ((bfd_link_pic (info)
0451c93c
MS		 1199 && (sec->flags & SEC_ALLOC) != 0
1200 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1201 && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1202 && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1203 && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL
0451c93c
MS		 1204 && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1205 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1206 && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1207 || (h != NULL
8c21ca21 1208 && (! SYMBOLIC_BIND (info, h)
0451c93c 1209 || h->root.type == bfd_link_hash_defweak
f5385ebf 1210 || !h->def_regular))))
64285810 1211 || (ELIMINATE_COPY_RELOCS
0e1862bb 1212 && !bfd_link_pic (info)
0451c93c
MS		 1213 && (sec->flags & SEC_ALLOC) != 0
1214 && h != NULL
1215 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1216 || !h->def_regular)))
a85d7ed0 1217 {
00d8c7a9
AK		 1218 struct elf_dyn_relocs *p;
1219 struct elf_dyn_relocs **head;
ec338859 1220
0451c93c
MS		 1221 /* We must copy these reloc types into the output file.
1222 Create a reloc section in dynobj and make room for
1223 this reloc. */
a85d7ed0
NC		 1224 if (sreloc == NULL)
1225 {
440e9cd2
AK		 1226 if (htab->elf.dynobj == NULL)
1227 htab->elf.dynobj = abfd;
1228
83bac4b0
NC		 1229 sreloc = _bfd_elf_make_dynamic_reloc_section
1230 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
ec338859 1231
a85d7ed0 1232 if (sreloc == NULL)
83bac4b0 1233 return FALSE;
a85d7ed0 1234 }
ec338859 1235
0451c93c
MS		 1236 /* If this is a global symbol, we count the number of
1237 relocations we need for this symbol. */
1238 if (h != NULL)
a85d7ed0 1239 {
190eb1dd 1240 head = &h->dyn_relocs;
0451c93c
MS		 1241 }
1242 else
1243 {
ec338859
AM		 1244 /* Track dynamic relocs needed for local syms too.
1245 We really need local syms available to do this
1246 easily. Oh well. */
ec338859 1247 asection *s;
6edfbbad
DJ		 1248 void *vpp;
1249
87d72d41
AM		 1250 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1251 abfd, r_symndx);
1252 if (isym == NULL)
b34976b6 1253 return FALSE;
ec338859 1254
87d72d41
AM		 1255 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1256 if (s == NULL)
1257 s = sec;
1258
6edfbbad 1259 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1260 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1261 }
1262
1263 p = *head;
1264 if (p == NULL || p->sec != sec)
1265 {
986f0783 1266 size_t amt = sizeof *p;
00d8c7a9 1267 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1268 bfd_alloc (htab->elf.dynobj, amt));
1269 if (p == NULL)
b34976b6 1270 return FALSE;
ec338859
AM		 1271 p->next = *head;
1272 *head = p;
1273 p->sec = sec;
1274 p->count = 0;
1275 p->pc_count = 0;
a85d7ed0 1276 }
ec338859
AM		 1277
1278 p->count += 1;
1279 if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
fb798c50
AK		 1280 || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL
1281 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
ec338859
AM		 1282 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1283 || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1284 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1285 || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1286 p->pc_count += 1;
a85d7ed0 1287 }
a85d7ed0 1288 break;
ec338859 1289
a85d7ed0
NC		 1290 /* This relocation describes the C++ object vtable hierarchy.
1291 Reconstruct it for later use during GC. */
947216bf 1292 case R_390_GNU_VTINHERIT:
c152c796 1293 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 1294 return FALSE;
947216bf 1295 break;
ec338859 1296
a85d7ed0
NC		 1297 /* This relocation describes which C++ vtable entries are actually
1298 used. Record for later use during GC. */
947216bf 1299 case R_390_GNU_VTENTRY:
a0ea3a14 1300 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 1301 return FALSE;
947216bf 1302 break;
ec338859 1303
a85d7ed0
NC		 1304 default:
1305 break;
1306 }
1307 }
1308
b34976b6 1309 return TRUE;
a85d7ed0
NC		 1310}
1311
1312/* Return the section that should be marked against GC for a given
1313 relocation. */
1314
1315static asection *
07adf181
AM		 1316elf_s390_gc_mark_hook (asection *sec,
1317 struct bfd_link_info *info,
1318 Elf_Internal_Rela *rel,
1319 struct elf_link_hash_entry *h,
1320 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1321{
1322 if (h != NULL)
07adf181
AM		 1323 switch (ELF64_R_TYPE (rel->r_info))
1324 {
1325 case R_390_GNU_VTINHERIT:
1326 case R_390_GNU_VTENTRY:
1327 return NULL;
1328 }
1329
1330 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0
NC		 1331}
1332
5236c819
MS		 1333/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1334 entry but we found we will not create any. Called when we find we will
1335 not have any PLT for this symbol, by for example
1336 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1337 or elf_s390_size_dynamic_sections if no dynamic sections will be
1338 created (we're only linking static objects). */
1339
1340static void
2c3fc389 1341elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1342{
1343 if (h->elf.root.type == bfd_link_hash_warning)
1344 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1345
1346 if (h->gotplt_refcount <= 0)
1347 return;
1348
1349 /* We simply add the number of gotplt references to the number
1350 * of got references for this symbol. */
1351 h->elf.got.refcount += h->gotplt_refcount;
1352 h->gotplt_refcount = -1;
1353}
1354
63c1f59d
AM		 1355/* Find dynamic relocs for H that apply to read-only sections. */
1356
1357static asection *
1358readonly_dynrelocs (struct elf_link_hash_entry *h)
1359{
1360 struct elf_dyn_relocs *p;
1361
190eb1dd 1362 for (p = h->dyn_relocs; p != NULL; p = p->next)
63c1f59d
AM		 1363 {
1364 asection *s = p->sec->output_section;
1365
1366 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1367 return p->sec;
1368 }
1369 return NULL;
1370}
1371
a85d7ed0
NC		 1372/* Adjust a symbol defined by a dynamic object and referenced by a
1373 regular object. The current definition is in some section of the
1374 dynamic object, but we're not including those sections. We have to
1375 change the definition to something the rest of the link can
1376 understand. */
1377
b34976b6 1378static bfd_boolean
4dfe6ac6
NC		 1379elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1380 struct elf_link_hash_entry *h)
a85d7ed0 1381{
0451c93c 1382 struct elf_s390_link_hash_table *htab;
5474d94f 1383 asection *s, *srel;
a85d7ed0 1384
470b557a
AK		 1385 /* STT_GNU_IFUNC symbol must go through PLT. */
1386 if (s390_is_ifunc_symbol_p (h))
d8ee9e44
AK		 1387 {
1388 /* All local STT_GNU_IFUNC references must be treated as local
1389 calls via local PLT. */
1390 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1391 {
1392 bfd_size_type pc_count = 0, count = 0;
1393 struct elf_dyn_relocs **pp;
d8ee9e44
AK		 1394 struct elf_dyn_relocs *p;
1395
190eb1dd 1396 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
d8ee9e44
AK		 1397 {
1398 pc_count += p->pc_count;
1399 p->count -= p->pc_count;
1400 p->pc_count = 0;
1401 count += p->count;
1402 if (p->count == 0)
1403 *pp = p->next;
1404 else
1405 pp = &p->next;
1406 }
1407
1408 if (pc_count || count)
1409 {
1410 h->needs_plt = 1;
1411 h->non_got_ref = 1;
1412 if (h->plt.refcount <= 0)
1413 h->plt.refcount = 1;
1414 else
1415 h->plt.refcount += 1;
1416 }
1417 }
1418
1419 if (h->plt.refcount <= 0)
1420 {
1421 h->plt.offset = (bfd_vma) -1;
1422 h->needs_plt = 0;
1423 }
1424 return TRUE;
1425 }
470b557a 1426
a85d7ed0
NC		 1427 /* If this is a function, put it in the procedure linkage table. We
1428 will fill in the contents of the procedure linkage table later
cedb70c5 1429 (although we could actually do it here). */
a85d7ed0 1430 if (h->type == STT_FUNC
f5385ebf 1431 || h->needs_plt)
a85d7ed0 1432 {
0451c93c 1433 if (h->plt.refcount <= 0
8c21ca21 1434 || SYMBOL_CALLS_LOCAL (info, h)
10e7c045 1435 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a85d7ed0
NC		 1436 {
1437 /* This case can occur if we saw a PLT32 reloc in an input
947216bf
AM		 1438 file, but the symbol was never referred to by a dynamic
1439 object, or if all references were garbage collected. In
0451c93c
MS		 1440 such a case, we don't actually need to build a procedure
1441 linkage table, and we can just do a PC32 reloc instead. */
a85d7ed0 1442 h->plt.offset = (bfd_vma) -1;
f5385ebf 1443 h->needs_plt = 0;
5236c819 1444 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1445 }
1446
b34976b6 1447 return TRUE;
a85d7ed0 1448 }
bbd7ec4a 1449 else
0451c93c
MS		 1450 /* It's possible that we incorrectly decided a .plt reloc was
1451 needed for an R_390_PC32 reloc to a non-function sym in
1452 check_relocs. We can't decide accurately between function and
1453 non-function syms in check-relocs; Objects loaded later in
1454 the link may change h->type. So fix it now. */
bbd7ec4a 1455 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1456
1457 /* If this is a weak symbol, and there is a real definition, the
1458 processor independent code will have arranged for us to see the
1459 real definition first, and we can just use the same value. */
60d67dc8 1460 if (h->is_weakalias)
a85d7ed0 1461 {
60d67dc8
AM		 1462 struct elf_link_hash_entry *def = weakdef (h);
1463 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1464 h->root.u.def.section = def->root.u.def.section;
1465 h->root.u.def.value = def->root.u.def.value;
64285810 1466 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
60d67dc8 1467 h->non_got_ref = def->non_got_ref;
b34976b6 1468 return TRUE;
a85d7ed0
NC		 1469 }
1470
1471 /* This is a reference to a symbol defined by a dynamic object which
1472 is not a function. */
1473
1474 /* If we are creating a shared library, we must presume that the
1475 only references to the symbol are via the global offset table.
1476 For such cases we need not do anything here; the relocations will
1477 be handled correctly by relocate_section. */
0e1862bb 1478 if (bfd_link_pic (info))
b34976b6 1479 return TRUE;
a85d7ed0
NC		 1480
1481 /* If there are no references to this symbol that do not use the
1482 GOT, we don't need to generate a copy reloc. */
f5385ebf 1483 if (!h->non_got_ref)
b34976b6 1484 return TRUE;
a85d7ed0 1485
0451c93c
MS		 1486 /* If -z nocopyreloc was given, we won't generate them either. */
1487 if (info->nocopyreloc)
1488 {
f5385ebf 1489 h->non_got_ref = 0;
b34976b6 1490 return TRUE;
0451c93c
MS		 1491 }
1492
3bf083ed
AM		 1493 /* If we don't find any dynamic relocs in read-only sections, then
1494 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1495 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
0451c93c 1496 {
3bf083ed
AM		 1497 h->non_got_ref = 0;
1498 return TRUE;
0451c93c
MS		 1499 }
1500
a85d7ed0
NC		 1501 /* We must allocate the symbol in our .dynbss section, which will
1502 become part of the .bss section of the executable. There will be
1503 an entry for this symbol in the .dynsym section. The dynamic
1504 object will contain position independent code, so all references
1505 from the dynamic object to this symbol will go through the global
1506 offset table. The dynamic linker will use the .dynsym entry to
1507 determine the address it must put in the global offset table, so
1508 both the dynamic object and the regular object will refer to the
1509 same memory location for the variable. */
1510
0451c93c 1511 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1512 if (htab == NULL)
1513 return FALSE;
a85d7ed0 1514
0451c93c
MS		 1515 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1516 copy the initial value out of the dynamic object and into the
1517 runtime process image. */
5474d94f
AM		 1518 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1519 {
1520 s = htab->elf.sdynrelro;
1521 srel = htab->elf.sreldynrelro;
1522 }
1523 else
1524 {
1525 s = htab->elf.sdynbss;
1526 srel = htab->elf.srelbss;
1527 }
1d7e9d18 1528 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1529 {
5474d94f 1530 srel->size += sizeof (Elf64_External_Rela);
f5385ebf 1531 h->needs_copy = 1;
a85d7ed0
NC		 1532 }
1533
6cabe1ea 1534 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a85d7ed0
NC		 1535}
1536
0451c93c
MS		 1537/* Allocate space in .plt, .got and associated reloc sections for
1538 dynamic relocs. */
1539
b34976b6 1540static bfd_boolean
4dfe6ac6
NC		 1541allocate_dynrelocs (struct elf_link_hash_entry *h,
1542 void * inf)
0451c93c
MS		 1543{
1544 struct bfd_link_info *info;
1545 struct elf_s390_link_hash_table *htab;
00d8c7a9 1546 struct elf_dyn_relocs *p;
0451c93c 1547
e92d460e 1548 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1549 return TRUE;
0451c93c
MS		 1550
1551 info = (struct bfd_link_info *) inf;
1552 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1553 if (htab == NULL)
1554 return FALSE;
0451c93c 1555
470b557a
AK		 1556 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1557 here if it is defined and referenced in a non-shared object. */
1558 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
61643fba 1559 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
470b557a
AK		 1560 else if (htab->elf.dynamic_sections_created
1561 && h->plt.refcount > 0)
0451c93c
MS		 1562 {
1563 /* Make sure this symbol is output as a dynamic symbol.
1564 Undefined weak syms won't yet be marked as dynamic. */
1565 if (h->dynindx == -1
f5385ebf 1566 && !h->forced_local)
0451c93c 1567 {
c152c796 1568 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1569 return FALSE;
0451c93c
MS		 1570 }
1571
0e1862bb 1572 if (bfd_link_pic (info)
4ec72bde 1573 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1574 {
f41345a7 1575 asection *s = htab->elf.splt;
0451c93c
MS		 1576
1577 /* If this is the first .plt entry, make room for the special
1578 first entry. */
eea6121a
AM		 1579 if (s->size == 0)
1580 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1581
eea6121a 1582 h->plt.offset = s->size;
0451c93c
MS		 1583
1584 /* If this symbol is not defined in a regular file, and we are
1585 not generating a shared library, then set the symbol to this
1586 location in the .plt. This is required to make function
1587 pointers compare as equal between the normal executable and
1588 the shared library. */
0e1862bb 1589 if (! bfd_link_pic (info)
f5385ebf 1590 && !h->def_regular)
0451c93c
MS		 1591 {
1592 h->root.u.def.section = s;
1593 h->root.u.def.value = h->plt.offset;
1594 }
ec338859 1595
0451c93c 1596 /* Make room for this entry. */
eea6121a 1597 s->size += PLT_ENTRY_SIZE;
ec338859 1598
afca762f 1599 /* We also need to make an entry in the .got.plt section. */
f41345a7 1600 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1601
1602 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1603 htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1604 }
1605 else
1606 {
1607 h->plt.offset = (bfd_vma) -1;
f5385ebf 1608 h->needs_plt = 0;
5236c819 1609 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1610 }
1611 }
1612 else
1613 {
1614 h->plt.offset = (bfd_vma) -1;
f5385ebf 1615 h->needs_plt = 0;
5236c819 1616 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1617 }
1618
69fc87f1
MS		 1619 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1620 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1621 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1622 we can save the dynamic TLS relocation. */
1623 if (h->got.refcount > 0
0e1862bb 1624 && !bfd_link_pic (info)
69fc87f1
MS		 1625 && h->dynindx == -1
1626 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1627 {
1628 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1629 /* For the GOTIE access without a literal pool entry the offset has
1630 to be stored somewhere. The immediate value in the instruction
1631 is not bit enough so the value is stored in the got. */
1632 {
f41345a7
AK		 1633 h->got.offset = htab->elf.sgot->size;
1634 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1635 }
1636 else
1637 h->got.offset = (bfd_vma) -1;
1638 }
1639 else if (h->got.refcount > 0)
0451c93c
MS		 1640 {
1641 asection *s;
b34976b6 1642 bfd_boolean dyn;
69fc87f1 1643 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1644
1645 /* Make sure this symbol is output as a dynamic symbol.
1646 Undefined weak syms won't yet be marked as dynamic. */
1647 if (h->dynindx == -1
f5385ebf 1648 && !h->forced_local)
0451c93c 1649 {
c152c796 1650 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1651 return FALSE;
0451c93c
MS		 1652 }
1653
f41345a7 1654 s = htab->elf.sgot;
eea6121a
AM		 1655 h->got.offset = s->size;
1656 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1657 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1658 if (tls_type == GOT_TLS_GD)
eea6121a 1659 s->size += GOT_ENTRY_SIZE;
0451c93c 1660 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1661 /* R_390_TLS_IE64 needs one dynamic relocation,
1662 R_390_TLS_GD64 needs one if local symbol and two if global. */
1663 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1664 || tls_type >= GOT_TLS_IE)
f41345a7 1665 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1 1666 else if (tls_type == GOT_TLS_GD)
f41345a7 1667 htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
10e7c045 1668 else if (!UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
0e1862bb 1669 && (bfd_link_pic (info)
82058a73 1670 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1671 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1672 }
1673 else
1674 h->got.offset = (bfd_vma) -1;
1675
190eb1dd 1676 if (h->dyn_relocs == NULL)
b34976b6 1677 return TRUE;
0451c93c
MS		 1678
1679 /* In the shared -Bsymbolic case, discard space allocated for
1680 dynamic pc-relative relocs against symbols which turn out to be
1681 defined in regular objects. For the normal shared case, discard
1682 space for pc-relative relocs that have become local due to symbol
1683 visibility changes. */
1684
0e1862bb 1685 if (bfd_link_pic (info))
0451c93c 1686 {
8c21ca21 1687 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1688 {
00d8c7a9 1689 struct elf_dyn_relocs **pp;
0451c93c 1690
190eb1dd 1691 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
0451c93c
MS		 1692 {
1693 p->count -= p->pc_count;
1694 p->pc_count = 0;
1695 if (p->count == 0)
1696 *pp = p->next;
1697 else
1698 pp = &p->next;
1699 }
1700 }
82058a73
MS		 1701
1702 /* Also discard relocs on undefined weak syms with non-default
1703 visibility. */
190eb1dd 1704 if (h->dyn_relocs != NULL
82058a73 1705 && h->root.type == bfd_link_hash_undefweak)
22d606e9 1706 {
b27bb18f
L		 1707 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1708 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
190eb1dd 1709 h->dyn_relocs = NULL;
22d606e9
AM		 1710
1711 /* Make sure undefined weak symbols are output as a dynamic
1712 symbol in PIEs. */
1713 else if (h->dynindx == -1
1714 && !h->forced_local)
1715 {
1716 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1717 return FALSE;
1718 }
1719 }
0451c93c 1720 }
64285810 1721 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1722 {
1723 /* For the non-shared case, discard space for relocs against
1724 symbols which turn out to need copy relocs or are not
1725 dynamic. */
1726
f5385ebf
AM		 1727 if (!h->non_got_ref
1728 && ((h->def_dynamic
1729 && !h->def_regular)
0451c93c
MS		 1730 || (htab->elf.dynamic_sections_created
1731 && (h->root.type == bfd_link_hash_undefweak
1732 || h->root.type == bfd_link_hash_undefined))))
1733 {
1734 /* Make sure this symbol is output as a dynamic symbol.
1735 Undefined weak syms won't yet be marked as dynamic. */
1736 if (h->dynindx == -1
f5385ebf 1737 && !h->forced_local)
0451c93c 1738 {
c152c796 1739 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1740 return FALSE;
0451c93c
MS		 1741 }
1742
1743 /* If that succeeded, we know we'll be keeping all the
1744 relocs. */
1745 if (h->dynindx != -1)
1746 goto keep;
1747 }
1748
190eb1dd 1749 h->dyn_relocs = NULL;
0451c93c 1750
ec338859 1751 keep: ;
0451c93c
MS		 1752 }
1753
1754 /* Finally, allocate space. */
190eb1dd 1755 for (p = h->dyn_relocs; p != NULL; p = p->next)
0451c93c
MS		 1756 {
1757 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1758 sreloc->size += p->count * sizeof (Elf64_External_Rela);
0451c93c
MS		 1759 }
1760
b34976b6 1761 return TRUE;
0451c93c
MS		 1762}
1763
63c1f59d
AM		 1764/* Set DF_TEXTREL if we find any dynamic relocs that apply to
1765 read-only sections. */
0451c93c 1766
b34976b6 1767static bfd_boolean
63c1f59d 1768maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
0451c93c 1769{
63c1f59d 1770 asection *sec;
0451c93c 1771
63c1f59d
AM		 1772 if (h->root.type == bfd_link_hash_indirect)
1773 return TRUE;
0451c93c 1774
63c1f59d
AM		 1775 sec = readonly_dynrelocs (h);
1776 if (sec != NULL)
1777 {
1778 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
0451c93c 1779
63c1f59d
AM		 1780 info->flags |= DF_TEXTREL;
1781 info->callbacks->minfo
c1c8c1ef 1782 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
63c1f59d 1783 sec->owner, h->root.root.string, sec);
0451c93c 1784
63c1f59d
AM		 1785 /* Not an error, just cut short the traversal. */
1786 return FALSE;
0451c93c 1787 }
b34976b6 1788 return TRUE;
0451c93c
MS		 1789}
1790
a85d7ed0
NC		 1791/* Set the sizes of the dynamic sections. */
1792
b34976b6 1793static bfd_boolean
4dfe6ac6
NC		 1794elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1795 struct bfd_link_info *info)
a85d7ed0 1796{
0451c93c 1797 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1798 bfd *dynobj;
1799 asection *s;
b34976b6 1800 bfd_boolean relocs;
0451c93c 1801 bfd *ibfd;
a85d7ed0 1802
0451c93c 1803 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1804 if (htab == NULL)
1805 return FALSE;
1806
0451c93c
MS		 1807 dynobj = htab->elf.dynobj;
1808 if (dynobj == NULL)
1809 abort ();
a85d7ed0 1810
0451c93c 1811 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1812 {
1813 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 1814 if (bfd_link_executable (info) && !info->nointerp)
a85d7ed0 1815 {
3d4d4302 1816 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 1817 if (s == NULL)
1818 abort ();
eea6121a 1819 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 1820 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1821 }
1822 }
a85d7ed0 1823
afca762f
AK		 1824 if (htab->elf.sgot && s390_gotplt_after_got_p (info))
1825 {
1826 /* _bfd_elf_create_got_section adds the got header size always
1827 to .got.plt but we need it in .got if this section comes
1828 first. */
1829 htab->elf.sgot->size += 3 * GOT_ENTRY_SIZE;
1830 htab->elf.sgotplt->size -= 3 * GOT_ENTRY_SIZE;
1831
1832 /* Make the _GLOBAL_OFFSET_TABLE_ symbol point to the .got
1833 instead of .got.plt. */
1834 htab->elf.hgot->root.u.def.section = htab->elf.sgot;
1835 htab->elf.hgot->root.u.def.value = 0;
1836 }
1837
0451c93c
MS		 1838 /* Set up .got offsets for local syms, and space for local dynamic
1839 relocs. */
c72f2fb2 1840 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a85d7ed0 1841 {
0451c93c
MS		 1842 bfd_signed_vma *local_got;
1843 bfd_signed_vma *end_local_got;
69fc87f1 1844 char *local_tls_type;
0451c93c
MS		 1845 bfd_size_type locsymcount;
1846 Elf_Internal_Shdr *symtab_hdr;
1847 asection *srela;
470b557a
AK		 1848 struct plt_entry *local_plt;
1849 unsigned int i;
a85d7ed0 1850
0ffa91dd 1851 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 1852 continue;
1853
0451c93c 1854 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 1855 {
00d8c7a9 1856 struct elf_dyn_relocs *p;
0451c93c 1857
6edfbbad 1858 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 1859 {
ec338859
AM		 1860 if (!bfd_is_abs_section (p->sec)
1861 && bfd_is_abs_section (p->sec->output_section))
1862 {
1863 /* Input section has been discarded, either because
1864 it is a copy of a linkonce section or due to
1865 linker script /DISCARD/, so we'll be discarding
1866 the relocs too. */
1867 }
248866a8 1868 else if (p->count != 0)
ec338859
AM		 1869 {
1870 srela = elf_section_data (p->sec)->sreloc;
eea6121a 1871 srela->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 1872 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1873 info->flags |= DF_TEXTREL;
ec338859 1874 }
a85d7ed0
NC		 1875 }
1876 }
0451c93c
MS		 1877
1878 local_got = elf_local_got_refcounts (ibfd);
1879 if (!local_got)
1880 continue;
1881
0ffa91dd 1882 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 1883 locsymcount = symtab_hdr->sh_info;
1884 end_local_got = local_got + locsymcount;
69fc87f1 1885 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 1886 s = htab->elf.sgot;
1887 srela = htab->elf.srelgot;
69fc87f1 1888 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 1889 {
0451c93c 1890 if (*local_got > 0)
a85d7ed0 1891 {
eea6121a
AM		 1892 *local_got = s->size;
1893 s->size += GOT_ENTRY_SIZE;
69fc87f1 1894 if (*local_tls_type == GOT_TLS_GD)
eea6121a 1895 s->size += GOT_ENTRY_SIZE;
0e1862bb 1896 if (bfd_link_pic (info))
eea6121a 1897 srela->size += sizeof (Elf64_External_Rela);
a85d7ed0
NC		 1898 }
1899 else
0451c93c 1900 *local_got = (bfd_vma) -1;
a85d7ed0 1901 }
470b557a
AK		 1902
1903 local_plt = elf_s390_local_plt (ibfd);
1904 for (i = 0; i < symtab_hdr->sh_info; i++)
1905 {
1906 if (local_plt[i].plt.refcount > 0)
1907 {
1908 local_plt[i].plt.offset = htab->elf.iplt->size;
1909 htab->elf.iplt->size += PLT_ENTRY_SIZE;
1910 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
1911 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
1912 }
1913 else
1914 local_plt[i].plt.offset = (bfd_vma) -1;
1915 }
0451c93c
MS		 1916 }
1917
69fc87f1
MS		 1918 if (htab->tls_ldm_got.refcount > 0)
1919 {
1920 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
1921 relocs. */
f41345a7
AK		 1922 htab->tls_ldm_got.offset = htab->elf.sgot->size;
1923 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
1924 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1
MS		 1925 }
1926 else
1927 htab->tls_ldm_got.offset = -1;
1928
0451c93c
MS		 1929 /* Allocate global sym .plt and .got entries, and space for global
1930 sym dynamic relocs. */
2c3fc389 1931 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 1932
1933 /* We now have determined the sizes of the various dynamic sections.
1934 Allocate memory for them. */
b34976b6 1935 relocs = FALSE;
0451c93c
MS		 1936 for (s = dynobj->sections; s != NULL; s = s->next)
1937 {
1938 if ((s->flags & SEC_LINKER_CREATED) == 0)
1939 continue;
1940
f41345a7
AK		 1941 if (s == htab->elf.splt
1942 || s == htab->elf.sgot
1943 || s == htab->elf.sgotplt
9d19e4fd 1944 || s == htab->elf.sdynbss
5474d94f 1945 || s == htab->elf.sdynrelro
470b557a
AK		 1946 || s == htab->elf.iplt
1947 || s == htab->elf.igotplt
1948 || s == htab->irelifunc)
0451c93c
MS		 1949 {
1950 /* Strip this section if we don't need it; see the
1951 comment below. */
1952 }
fd361982 1953 else if (CONST_STRNEQ (bfd_section_name (s), ".rela"))
0451c93c 1954 {
f41345a7 1955 if (s->size != 0 && s != htab->elf.srelplt)
b34976b6 1956 relocs = TRUE;
ec338859 1957
0451c93c
MS		 1958 /* We use the reloc_count field as a counter if we need
1959 to copy relocs into the output file. */
1960 s->reloc_count = 0;
1961 }
1962 else
a85d7ed0
NC		 1963 {
1964 /* It's not one of our sections, so don't allocate space. */
1965 continue;
1966 }
1967
eea6121a 1968 if (s->size == 0)
a85d7ed0 1969 {
0451c93c
MS		 1970 /* If we don't need this section, strip it from the
1971 output file. This is to handle .rela.bss and
1972 .rela.plt. We must create it in
1973 create_dynamic_sections, because it must be created
1974 before the linker maps input sections to output
1975 sections. The linker does that before
1976 adjust_dynamic_symbol is called, and it is that
1977 function which decides whether anything needs to go
1978 into these sections. */
1979
8423293d 1980 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 1981 continue;
1982 }
1983
c456f082
AM		 1984 if ((s->flags & SEC_HAS_CONTENTS) == 0)
1985 continue;
1986
0451c93c
MS		 1987 /* Allocate memory for the section contents. We use bfd_zalloc
1988 here in case unused entries are not reclaimed before the
1989 section's contents are written out. This should not happen,
1990 but this way if it does, we get a R_390_NONE reloc instead
1991 of garbage. */
eea6121a 1992 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 1993 if (s->contents == NULL)
b34976b6 1994 return FALSE;
a85d7ed0
NC		 1995 }
1996
0451c93c 1997 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1998 {
1999 /* Add some entries to the .dynamic section. We fill in the
2000 values later, in elf_s390_finish_dynamic_sections, but we
2001 must add the entries now so that we get the correct size for
2002 the .dynamic section. The DT_DEBUG entry is filled in by the
2003 dynamic linker and used by the debugger. */
dc810e39 2004#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2005 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2006
0e1862bb 2007 if (bfd_link_executable (info))
a85d7ed0 2008 {
dc810e39 2009 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2010 return FALSE;
a85d7ed0
NC		 2011 }
2012
f41345a7 2013 if (htab->elf.splt->size != 0)
a85d7ed0 2014 {
dc810e39
AM		 2015 if (!add_dynamic_entry (DT_PLTGOT, 0)
2016 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2017 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2018 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2019 return FALSE;
a85d7ed0
NC		 2020 }
2021
2022 if (relocs)
947216bf
AM		 2023 {
2024 if (!add_dynamic_entry (DT_RELA, 0)
2025 || !add_dynamic_entry (DT_RELASZ, 0)
2026 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 2027 return FALSE;
ec338859 2028
0451c93c
MS		 2029 /* If any dynamic relocs apply to a read-only section,
2030 then we need a DT_TEXTREL entry. */
248866a8 2031 if ((info->flags & DF_TEXTREL) == 0)
63c1f59d 2032 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
ec338859 2033
0451c93c
MS		 2034 if ((info->flags & DF_TEXTREL) != 0)
2035 {
2036 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2037 return FALSE;
0451c93c 2038 }
a85d7ed0
NC		 2039 }
2040 }
dc810e39 2041#undef add_dynamic_entry
a85d7ed0 2042
b34976b6 2043 return TRUE;
a85d7ed0
NC		 2044}
2045
69fc87f1
MS		 2046/* Return the base VMA address which should be subtracted from real addresses
2047 when resolving @dtpoff relocation.
2048 This is PT_TLS segment p_vaddr. */
2049
2050static bfd_vma
2c3fc389 2051dtpoff_base (struct bfd_link_info *info)
69fc87f1 2052{
e1918d23
AM		 2053 /* If tls_sec is NULL, we should have signalled an error already. */
2054 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2055 return 0;
e1918d23 2056 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2057}
2058
2059/* Return the relocation value for @tpoff relocation
2060 if STT_TLS virtual address is ADDRESS. */
2061
2062static bfd_vma
2c3fc389 2063tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2064{
e1918d23 2065 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2066
e1918d23
AM		 2067 /* If tls_sec is NULL, we should have signalled an error already. */
2068 if (htab->tls_sec == NULL)
69fc87f1 2069 return 0;
e1918d23 2070 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2071}
2072
2073/* Complain if TLS instruction relocation is against an invalid
2074 instruction. */
2075
2076static void
2c3fc389
NC		 2077invalid_tls_insn (bfd *input_bfd,
2078 asection *input_section,
2079 Elf_Internal_Rela *rel)
69fc87f1
MS		 2080{
2081 reloc_howto_type *howto;
2082
2083 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
4eca0228 2084 _bfd_error_handler
695344c0 2085 /* xgettext:c-format */
2dcf00ce 2086 (_("%pB(%pA+%#" PRIx64 "): invalid instruction for TLS relocation %s"),
d003868e
AM		 2087 input_bfd,
2088 input_section,
2dcf00ce 2089 (uint64_t) rel->r_offset,
69fc87f1 2090 howto->name);
77df2968 2091 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2092}
2093
a85d7ed0
NC		 2094/* Relocate a 390 ELF section. */
2095
b34976b6 2096static bfd_boolean
4dfe6ac6
NC		 2097elf_s390_relocate_section (bfd *output_bfd,
2098 struct bfd_link_info *info,
2099 bfd *input_bfd,
2100 asection *input_section,
2101 bfd_byte *contents,
2102 Elf_Internal_Rela *relocs,
2103 Elf_Internal_Sym *local_syms,
2104 asection **local_sections)
a85d7ed0 2105{
0451c93c 2106 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2107 Elf_Internal_Shdr *symtab_hdr;
2108 struct elf_link_hash_entry **sym_hashes;
2109 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2110 Elf_Internal_Rela *rel;
2111 Elf_Internal_Rela *relend;
2112
7af5d5c4
AM		 2113 if (!is_s390_elf (input_bfd))
2114 {
2115 bfd_set_error (bfd_error_wrong_format);
2116 return FALSE;
2117 }
0ffa91dd 2118
0451c93c 2119 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 2120 if (htab == NULL)
2121 return FALSE;
2122
0ffa91dd 2123 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2124 sym_hashes = elf_sym_hashes (input_bfd);
2125 local_got_offsets = elf_local_got_offsets (input_bfd);
2126
a85d7ed0
NC		 2127 rel = relocs;
2128 relend = relocs + input_section->reloc_count;
2129 for (; rel < relend; rel++)
2130 {
5236c819 2131 unsigned int r_type;
a85d7ed0
NC		 2132 reloc_howto_type *howto;
2133 unsigned long r_symndx;
2134 struct elf_link_hash_entry *h;
2135 Elf_Internal_Sym *sym;
2136 asection *sec;
0451c93c 2137 bfd_vma off;
a85d7ed0 2138 bfd_vma relocation;
b34976b6 2139 bfd_boolean unresolved_reloc;
a85d7ed0 2140 bfd_reloc_status_type r;
69fc87f1 2141 int tls_type;
b27bb18f 2142 bfd_boolean resolved_to_zero;
a85d7ed0
NC		 2143
2144 r_type = ELF64_R_TYPE (rel->r_info);
0451c93c 2145 if (r_type == (int) R_390_GNU_VTINHERIT
947216bf
AM		 2146 || r_type == (int) R_390_GNU_VTENTRY)
2147 continue;
5236c819 2148 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2149 {
2150 bfd_set_error (bfd_error_bad_value);
b34976b6 2151 return FALSE;
a85d7ed0 2152 }
a85d7ed0 2153
b491616a 2154 howto = elf_howto_table + r_type;
a85d7ed0 2155 r_symndx = ELF64_R_SYM (rel->r_info);
5236c819 2156
a85d7ed0
NC		 2157 h = NULL;
2158 sym = NULL;
2159 sec = NULL;
b34976b6 2160 unresolved_reloc = FALSE;
a85d7ed0
NC		 2161 if (r_symndx < symtab_hdr->sh_info)
2162 {
2163 sym = local_syms + r_symndx;
2164 sec = local_sections[r_symndx];
470b557a
AK		 2165
2166 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2167 {
2168 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2169 if (local_plt == NULL)
2170 return FALSE;
2171
2172 /* Address of the PLT slot. */
2173 relocation = (htab->elf.iplt->output_section->vma
2174 + htab->elf.iplt->output_offset
2175 + local_plt[r_symndx].plt.offset);
2176
2177 switch (r_type)
2178 {
31db78f6
AK		 2179 case R_390_PLTOFF16:
2180 case R_390_PLTOFF32:
2181 case R_390_PLTOFF64:
afca762f 2182 relocation -= s390_got_pointer (info);
31db78f6 2183 break;
470b557a
AK		 2184 case R_390_GOTPLT12:
2185 case R_390_GOTPLT16:
2186 case R_390_GOTPLT20:
2187 case R_390_GOTPLT32:
2188 case R_390_GOTPLT64:
2189 case R_390_GOTPLTENT:
2190 case R_390_GOT12:
2191 case R_390_GOT16:
2192 case R_390_GOT20:
2193 case R_390_GOT32:
2194 case R_390_GOT64:
2195 case R_390_GOTENT:
2196 {
2197 /* Write the PLT slot address into the GOT slot. */
2198 bfd_put_64 (output_bfd, relocation,
2199 htab->elf.sgot->contents +
2200 local_got_offsets[r_symndx]);
2201 relocation = (local_got_offsets[r_symndx] +
afca762f 2202 s390_got_offset (info));
470b557a
AK		 2203
2204 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
afca762f 2205 relocation += s390_got_pointer (info);
470b557a
AK		 2206 break;
2207 }
2208 default:
2209 break;
2210 }
2211 /* The output section is needed later in
2212 finish_dynamic_section when creating the dynamic
2213 relocation. */
2214 local_plt[r_symndx].sec = sec;
2215 goto do_relocation;
2216 }
2217 else
2218 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2219 }
2220 else
2221 {
560e09e9 2222 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2223 bfd_boolean ignored ATTRIBUTE_UNUSED;
0451c93c 2224
b2a8e766
AM		 2225 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2226 r_symndx, symtab_hdr, sym_hashes,
2227 h, sec, relocation,
62d887d4 2228 unresolved_reloc, warned, ignored);
a85d7ed0
NC		 2229 }
2230
dbaa2011 2231 if (sec != NULL && discarded_section (sec))
e4067dbb 2232 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2233 rel, 1, relend, howto, 0, contents);
ab96bf03 2234
0e1862bb 2235 if (bfd_link_relocatable (info))
ab96bf03
AM		 2236 continue;
2237
b27bb18f
L		 2238 resolved_to_zero = (h != NULL
2239 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
2240
a85d7ed0
NC		 2241 switch (r_type)
2242 {
5236c819
MS		 2243 case R_390_GOTPLT12:
2244 case R_390_GOTPLT16:
bd1ea41b 2245 case R_390_GOTPLT20:
5236c819
MS		 2246 case R_390_GOTPLT32:
2247 case R_390_GOTPLT64:
2248 case R_390_GOTPLTENT:
2249 /* There are three cases for a GOTPLT relocation. 1) The
2250 relocation is against the jump slot entry of a plt that
2251 will get emitted to the output file. 2) The relocation
2252 is against the jump slot of a plt entry that has been
2253 removed. elf_s390_adjust_gotplt has created a GOT entry
2254 as replacement. 3) The relocation is against a local symbol.
2255 Cases 2) and 3) are the same as the GOT relocation code
2256 so we just have to test for case 1 and fall through for
2257 the other two. */
2258 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2259 {
2260 bfd_vma plt_index;
2261
470b557a
AK		 2262 if (s390_is_ifunc_symbol_p (h))
2263 {
afca762f
AK		 2264 /* Entry indices of .iplt and .igot.plt match
2265 1:1. No magic PLT first entry here. */
470b557a 2266 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
afca762f
AK		 2267 relocation = (plt_index * GOT_ENTRY_SIZE
2268 + s390_gotplt_offset (info)
2269 + htab->elf.igotplt->output_offset);
470b557a
AK		 2270 }
2271 else
2272 {
afca762f
AK		 2273 plt_index = ((h->plt.offset - PLT_FIRST_ENTRY_SIZE)
2274 / PLT_ENTRY_SIZE);
2275
2276 relocation = (plt_index * GOT_ENTRY_SIZE
2277 + s390_gotplt_offset (info));
470b557a 2278 }
afca762f
AK		 2279 if (r_type == R_390_GOTPLTENT)
2280 relocation += s390_got_pointer (info);
5236c819 2281 unresolved_reloc = FALSE;
5236c819
MS		 2282 break;
2283 }
2284 /* Fall through. */
2285
947216bf
AM		 2286 case R_390_GOT12:
2287 case R_390_GOT16:
bd1ea41b 2288 case R_390_GOT20:
947216bf
AM		 2289 case R_390_GOT32:
2290 case R_390_GOT64:
2291 case R_390_GOTENT:
2292 /* Relocation is to the entry for this symbol in the global
2293 offset table. */
afca762f 2294 if (htab->elf.sgot == NULL)
0451c93c 2295 abort ();
a85d7ed0 2296
947216bf
AM		 2297 if (h != NULL)
2298 {
b34976b6 2299 bfd_boolean dyn;
a85d7ed0 2300
947216bf 2301 off = h->got.offset;
0451c93c 2302 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2303
2304 if (s390_is_ifunc_symbol_p (h))
2305 {
2306 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2307 if (off == (bfd_vma)-1)
2308 {
2309 /* No explicit GOT usage so redirect to the
2310 got.iplt slot. */
afca762f
AK		 2311 relocation = (s390_gotplt_offset (info)
2312 + htab->elf.igotplt->output_offset
2313 + (h->plt.offset / PLT_ENTRY_SIZE
2314 * GOT_ENTRY_SIZE));
2315
2316 /* For @GOTENT the relocation is against the offset between
2317 the instruction and the symbols entry in the GOT and not
2318 between the start of the GOT and the symbols entry. We
2319 add the vma of the GOT to get the correct value. */
2320 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2321 relocation += s390_got_pointer (info);
2322
2323 break;
470b557a
AK		 2324 }
2325 else
2326 {
2327 /* Explicit GOT slots must contain the address
2328 of the PLT slot. This will be handled in
2329 finish_dynamic_symbol. */
2330 }
2331 }
0e1862bb
L		 2332 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2333 bfd_link_pic (info),
2334 h)
2335 || (bfd_link_pic (info)
470b557a 2336 && SYMBOL_REFERENCES_LOCAL (info, h))
10e7c045 2337 || resolved_to_zero)
947216bf 2338 {
e6213e09
AK		 2339 Elf_Internal_Sym *isym;
2340 asection *sym_sec;
2341
947216bf
AM		 2342 /* This is actually a static link, or it is a
2343 -Bsymbolic link and the symbol is defined
2344 locally, or the symbol was forced to be local
2345 because of a version file. We must initialize
2346 this entry in the global offset table. Since the
2347 offset must always be a multiple of 2, we use the
2348 least significant bit to record whether we have
2349 initialized it already.
2350
2351 When doing a dynamic link, we create a .rel.got
2352 relocation entry to initialize the value. This
2353 is done in the finish_dynamic_symbol routine. */
2354 if ((off & 1) != 0)
2355 off &= ~1;
2356 else
2357 {
a85d7ed0 2358 bfd_put_64 (output_bfd, relocation,
afca762f 2359 htab->elf.sgot->contents + off);
947216bf
AM		 2360 h->got.offset |= 1;
2361 }
a63cc5f7 2362
e6213e09
AK		 2363 /* When turning a GOT slot dereference into a direct
2364 reference using larl we have to make sure that
2365 the symbol is 1. properly aligned and 2. it is no
2366 ABS symbol or will become one. */
a63cc5f7 2367 if ((h->def_regular
0e1862bb 2368 && bfd_link_pic (info)
a63cc5f7
AK		 2369 && SYMBOL_REFERENCES_LOCAL (info, h))
2370 /* lgrl rx,sym@GOTENT -> larl rx, sym */
2371 && ((r_type == R_390_GOTENT
2372 && (bfd_get_16 (input_bfd,
2373 contents + rel->r_offset - 2)
2374 & 0xff0f) == 0xc408)
2375 /* lg rx, sym@GOT(r12) -> larl rx, sym */
2376 || (r_type == R_390_GOT20
2377 && (bfd_get_32 (input_bfd,
2378 contents + rel->r_offset - 2)
2379 & 0xff00f000) == 0xe300c000
2380 && bfd_get_8 (input_bfd,
e6213e09
AK		 2381 contents + rel->r_offset + 3) == 0x04))
2382 && (isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2383 input_bfd, r_symndx))
2384 && isym->st_shndx != SHN_ABS
2385 && h != htab->elf.hdynamic
2386 && h != htab->elf.hgot
2387 && h != htab->elf.hplt
2388 && !(isym->st_value & 1)
2389 && (sym_sec = bfd_section_from_elf_index (input_bfd,
2390 isym->st_shndx))
2391 && sym_sec->alignment_power)
a63cc5f7
AK		 2392 {
2393 unsigned short new_insn =
2394 (0xc000 | (bfd_get_8 (input_bfd,
2395 contents + rel->r_offset - 1) & 0xf0));
2396 bfd_put_16 (output_bfd, new_insn,
2397 contents + rel->r_offset - 2);
2398 r_type = R_390_PC32DBL;
2399 rel->r_addend = 2;
2400 howto = elf_howto_table + r_type;
2401 relocation = h->root.u.def.value
2402 + h->root.u.def.section->output_section->vma
2403 + h->root.u.def.section->output_offset;
2404 goto do_relocation;
2405 }
947216bf 2406 }
0451c93c 2407 else
b34976b6 2408 unresolved_reloc = FALSE;
947216bf
AM		 2409 }
2410 else
2411 {
0451c93c
MS		 2412 if (local_got_offsets == NULL)
2413 abort ();
a85d7ed0 2414
947216bf 2415 off = local_got_offsets[r_symndx];
a85d7ed0 2416
947216bf
AM		 2417 /* The offset must always be a multiple of 8. We use
2418 the least significant bit to record whether we have
2419 already generated the necessary reloc. */
2420 if ((off & 1) != 0)
2421 off &= ~1;
2422 else
2423 {
2424 bfd_put_64 (output_bfd, relocation,
f41345a7 2425 htab->elf.sgot->contents + off);
a85d7ed0 2426
0e1862bb 2427 if (bfd_link_pic (info))
947216bf
AM		 2428 {
2429 asection *s;
2430 Elf_Internal_Rela outrel;
2431 bfd_byte *loc;
a85d7ed0 2432
f41345a7 2433 s = htab->elf.srelgot;
947216bf 2434 if (s == NULL)
0451c93c 2435 abort ();
a85d7ed0 2436
f41345a7
AK		 2437 outrel.r_offset = (htab->elf.sgot->output_section->vma
2438 + htab->elf.sgot->output_offset
947216bf
AM		 2439 + off);
2440 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2441 outrel.r_addend = relocation;
947216bf
AM		 2442 loc = s->contents;
2443 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2444 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2445 }
a85d7ed0 2446
947216bf
AM		 2447 local_got_offsets[r_symndx] |= 1;
2448 }
2449 }
a85d7ed0 2450
0451c93c
MS		 2451 if (off >= (bfd_vma) -2)
2452 abort ();
2453
afca762f 2454 relocation = s390_got_offset (info) + off;
0451c93c 2455
ae9a127f
NC		 2456 /* For @GOTENT the relocation is against the offset between
2457 the instruction and the symbols entry in the GOT and not
2458 between the start of the GOT and the symbols entry. We
2459 add the vma of the GOT to get the correct value. */
5236c819
MS		 2460 if ( r_type == R_390_GOTENT
2461 || r_type == R_390_GOTPLTENT)
afca762f 2462 relocation += s390_got_pointer (info);
a85d7ed0 2463
947216bf 2464 break;
99c79b2e 2465
5236c819
MS		 2466 case R_390_GOTOFF16:
2467 case R_390_GOTOFF32:
2468 case R_390_GOTOFF64:
947216bf
AM		 2469 /* Relocation is relative to the start of the global offset
2470 table. */
a85d7ed0 2471
d47b13e0
AK		 2472 if (h != NULL
2473 && s390_is_ifunc_symbol_p (h)
2474 && h->def_regular
2475 && !bfd_link_executable (info))
2476 {
2477 relocation = (htab->elf.iplt->output_section->vma
2478 + htab->elf.iplt->output_offset
2479 + h->plt.offset
afca762f 2480 - s390_got_pointer (info));
d47b13e0
AK		 2481 goto do_relocation;
2482 }
2483
afca762f 2484 relocation -= s390_got_pointer (info);
947216bf 2485 break;
a85d7ed0 2486
947216bf 2487 case R_390_GOTPC:
a85d7ed0 2488 case R_390_GOTPCDBL:
947216bf 2489 /* Use global offset table as symbol value. */
afca762f 2490 relocation = s390_got_pointer (info);
b34976b6 2491 unresolved_reloc = FALSE;
947216bf 2492 break;
a85d7ed0 2493
fb798c50 2494 case R_390_PLT12DBL:
947216bf 2495 case R_390_PLT16DBL:
fb798c50 2496 case R_390_PLT24DBL:
947216bf
AM		 2497 case R_390_PLT32:
2498 case R_390_PLT32DBL:
2499 case R_390_PLT64:
2500 /* Relocation is to the entry for this symbol in the
2501 procedure linkage table. */
a85d7ed0 2502
947216bf
AM		 2503 /* Resolve a PLT32 reloc against a local symbol directly,
2504 without using the procedure linkage table. */
2505 if (h == NULL)
2506 break;
a85d7ed0 2507
947216bf 2508 if (h->plt.offset == (bfd_vma) -1
31db78f6 2509 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
947216bf
AM		 2510 {
2511 /* We didn't make a PLT entry for this symbol. This
2512 happens when statically linking PIC code, or when
2513 using -Bsymbolic. */
2514 break;
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 else
2521 relocation = (htab->elf.splt->output_section->vma
2522 + htab->elf.splt->output_offset
2523 + h->plt.offset);
b34976b6 2524 unresolved_reloc = FALSE;
26e41594 2525 break;
5236c819
MS		 2526
2527 case R_390_PLTOFF16:
2528 case R_390_PLTOFF32:
2529 case R_390_PLTOFF64:
26e41594
AM		 2530 /* Relocation is to the entry for this symbol in the
2531 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2532
2533 /* For local symbols or if we didn't make a PLT entry for
2534 this symbol resolve the symbol directly. */
31db78f6 2535 if (h == NULL
5236c819 2536 || h->plt.offset == (bfd_vma) -1
31db78f6 2537 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2538 {
afca762f 2539 relocation -= s390_got_pointer (info);
5236c819
MS		 2540 break;
2541 }
2542
470b557a
AK		 2543 if (s390_is_ifunc_symbol_p (h))
2544 relocation = (htab->elf.iplt->output_section->vma
2545 + htab->elf.iplt->output_offset
2546 + h->plt.offset
afca762f 2547 - s390_got_pointer (info));
470b557a
AK		 2548 else
2549 relocation = (htab->elf.splt->output_section->vma
2550 + htab->elf.splt->output_offset
2551 + h->plt.offset
afca762f 2552 - s390_got_pointer (info));
5236c819 2553 unresolved_reloc = FALSE;
947216bf
AM		 2554 break;
2555
947216bf 2556 case R_390_PC16:
fb798c50 2557 case R_390_PC12DBL:
947216bf 2558 case R_390_PC16DBL:
fb798c50 2559 case R_390_PC24DBL:
947216bf 2560 case R_390_PC32:
a85d7ed0 2561 case R_390_PC32DBL:
947216bf 2562 case R_390_PC64:
431e5de3
AK		 2563 if (h != NULL
2564 && bfd_link_pie (info)
2565 && !h->def_regular)
2566 {
871b3ab2 2567 _bfd_error_handler (_("%pB: `%s' non-PLT reloc for symbol defined "
431e5de3
AK		 2568 "in shared library and accessed "
2569 "from executable "
2570 "(rebuild file with -fPIC ?)"),
2571 input_bfd, h->root.root.string);
2572 bfd_set_error (bfd_error_bad_value);
2573 return FALSE;
2574 }
99ba5125
AK		 2575 /* The target of these relocs are instruction operands
2576 residing in read-only sections. We cannot emit a runtime
2577 reloc for it. */
2578 if (h != NULL
2579 && s390_is_ifunc_symbol_p (h)
2580 && h->def_regular
2581 && bfd_link_pic (info))
2582 {
2583 relocation = (htab->elf.iplt->output_section->vma
2584 + htab->elf.iplt->output_offset
2585 + h->plt.offset);
2586 goto do_relocation;
2587 }
1a0670f3 2588 /* Fall through. */
99ba5125
AK		 2589
2590 case R_390_8:
2591 case R_390_16:
2592 case R_390_32:
2593 case R_390_64:
470b557a 2594
f657f8c4
NC		 2595 if ((input_section->flags & SEC_ALLOC) == 0)
2596 break;
2597
470b557a
AK		 2598 if (h != NULL
2599 && s390_is_ifunc_symbol_p (h)
2600 && h->def_regular)
2601 {
d7ab4911 2602 if (!bfd_link_pic (info))
470b557a 2603 {
d7ab4911
AK		 2604 /* For a non-shared object the symbol will not
2605 change. Hence we can write the address of the
2606 target IPLT slot now. */
470b557a
AK		 2607 relocation = (htab->elf.iplt->output_section->vma
2608 + htab->elf.iplt->output_offset
2609 + h ->plt.offset);
2610 goto do_relocation;
2611 }
2612 else
2613 {
2614 /* For shared objects a runtime relocation is needed. */
2615
2616 Elf_Internal_Rela outrel;
2617 asection *sreloc;
2618
2619 /* Need a dynamic relocation to get the real function
2620 address. */
2621 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2622 info,
2623 input_section,
2624 rel->r_offset);
2625 if (outrel.r_offset == (bfd_vma) -1
2626 || outrel.r_offset == (bfd_vma) -2)
2627 abort ();
2628
2629 outrel.r_offset += (input_section->output_section->vma
2630 + input_section->output_offset);
2631
2632 if (h->dynindx == -1
2633 || h->forced_local
0e1862bb 2634 || bfd_link_executable (info))
470b557a
AK		 2635 {
2636 /* This symbol is resolved locally. */
2637 outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
2638 outrel.r_addend = (h->root.u.def.value
2639 + h->root.u.def.section->output_section->vma
2640 + h->root.u.def.section->output_offset);
2641 }
2642 else
2643 {
2644 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2645 outrel.r_addend = 0;
2646 }
2647
2648 sreloc = htab->elf.irelifunc;
2649 elf_append_rela (output_bfd, sreloc, &outrel);
2650
2651 /* If this reloc is against an external symbol, we
2652 do not want to fiddle with the addend. Otherwise,
2653 we need to include the symbol value so that it
2654 becomes an addend for the dynamic reloc. For an
2655 internal symbol, we have updated addend. */
2656 continue;
2657 }
2658 }
2659
0e1862bb 2660 if ((bfd_link_pic (info)
82058a73 2661 && (h == NULL
b27bb18f
L		 2662 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2663 && !resolved_to_zero)
82058a73 2664 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2665 && ((r_type != R_390_PC16
fb798c50 2666 && r_type != R_390_PC12DBL
0451c93c 2667 && r_type != R_390_PC16DBL
fb798c50 2668 && r_type != R_390_PC24DBL
0451c93c
MS		 2669 && r_type != R_390_PC32
2670 && r_type != R_390_PC32DBL
2671 && r_type != R_390_PC64)
8c21ca21 2672 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810 2673 || (ELIMINATE_COPY_RELOCS
0e1862bb 2674 && !bfd_link_pic (info)
0451c93c
MS		 2675 && h != NULL
2676 && h->dynindx != -1
f5385ebf
AM		 2677 && !h->non_got_ref
2678 && ((h->def_dynamic
2679 && !h->def_regular)
0451c93c
MS		 2680 || h->root.type == bfd_link_hash_undefweak
2681 || h->root.type == bfd_link_hash_undefined)))
947216bf
AM		 2682 {
2683 Elf_Internal_Rela outrel;
b34976b6 2684 bfd_boolean skip, relocate;
0451c93c 2685 asection *sreloc;
947216bf 2686 bfd_byte *loc;
a85d7ed0 2687
947216bf
AM		 2688 /* When generating a shared object, these relocations
2689 are copied into the output file to be resolved at run
2690 time. */
b34976b6
AM		 2691 skip = FALSE;
2692 relocate = FALSE;
a85d7ed0 2693
c629eae0
JJ		 2694 outrel.r_offset =
2695 _bfd_elf_section_offset (output_bfd, info, input_section,
2696 rel->r_offset);
2697 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2698 skip = TRUE;
0bb2d96a 2699 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2700 skip = TRUE, relocate = TRUE;
a85d7ed0 2701
947216bf
AM		 2702 outrel.r_offset += (input_section->output_section->vma
2703 + input_section->output_offset);
a85d7ed0 2704
947216bf 2705 if (skip)
0bb2d96a 2706 memset (&outrel, 0, sizeof outrel);
947216bf 2707 else if (h != NULL
0451c93c
MS		 2708 && h->dynindx != -1
2709 && (r_type == R_390_PC16
fb798c50 2710 || r_type == R_390_PC12DBL
0451c93c 2711 || r_type == R_390_PC16DBL
fb798c50 2712 || r_type == R_390_PC24DBL
0451c93c
MS		 2713 || r_type == R_390_PC32
2714 || r_type == R_390_PC32DBL
2715 || r_type == R_390_PC64
0e1862bb 2716 || !bfd_link_pic (info)
8c21ca21 2717 || !SYMBOLIC_BIND (info, h)
f5385ebf 2718 || !h->def_regular))
947216bf
AM		 2719 {
2720 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
27018c3f 2721 outrel.r_addend = rel->r_addend;
947216bf
AM		 2722 }
2723 else
2724 {
0451c93c 2725 /* This symbol is local, or marked to become local. */
90ced0dd 2726 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2727 if (r_type == R_390_64)
2728 {
2729 relocate = TRUE;
2730 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2731 }
2732 else
2733 {
2734 long sindx;
2735
90ced0dd 2736 if (bfd_is_abs_section (sec))
b5727d75
MS		 2737 sindx = 0;
2738 else if (sec == NULL || sec->owner == NULL)
2739 {
2740 bfd_set_error(bfd_error_bad_value);
2741 return FALSE;
2742 }
2743 else
2744 {
2745 asection *osec;
2746
2747 osec = sec->output_section;
2748 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2749
2750 if (sindx == 0)
2751 {
2752 osec = htab->elf.text_index_section;
2753 sindx = elf_section_data (osec)->dynindx;
2754 }
2755 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2756
2757 /* We are turning this relocation into one
2758 against a section symbol, so subtract out
2759 the output section's address but not the
2760 offset of the input section in the output
2761 section. */
90ced0dd 2762 outrel.r_addend -= osec->vma;
b5727d75
MS		 2763 }
2764 outrel.r_info = ELF64_R_INFO (sindx, r_type);
b5727d75 2765 }
0451c93c 2766 }
a85d7ed0 2767
0451c93c
MS		 2768 sreloc = elf_section_data (input_section)->sreloc;
2769 if (sreloc == NULL)
2770 abort ();
2771
947216bf
AM		 2772 loc = sreloc->contents;
2773 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2774 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
a85d7ed0 2775
947216bf
AM		 2776 /* If this reloc is against an external symbol, we do
2777 not want to fiddle with the addend. Otherwise, we
2778 need to include the symbol value so that it becomes
2779 an addend for the dynamic reloc. */
2780 if (! relocate)
2781 continue;
2782 }
a85d7ed0 2783
947216bf 2784 break;
a85d7ed0 2785
69fc87f1
MS		 2786 /* Relocations for tls literal pool entries. */
2787 case R_390_TLS_IE64:
0e1862bb 2788 if (bfd_link_pic (info))
69fc87f1
MS		 2789 {
2790 Elf_Internal_Rela outrel;
2791 asection *sreloc;
2792 bfd_byte *loc;
2793
2794 outrel.r_offset = rel->r_offset
2795 + input_section->output_section->vma
2796 + input_section->output_offset;
2797 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2798 sreloc = elf_section_data (input_section)->sreloc;
2799 if (sreloc == NULL)
2800 abort ();
2801 loc = sreloc->contents;
2802 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2803 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2804 }
ae9a127f 2805 /* Fall through. */
69fc87f1
MS		 2806
2807 case R_390_TLS_GD64:
2808 case R_390_TLS_GOTIE64:
2809 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2810 tls_type = GOT_UNKNOWN;
2811 if (h == NULL && local_got_offsets)
2812 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2813 else if (h != NULL)
2814 {
2815 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 2816 if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
69fc87f1
MS		 2817 r_type = R_390_TLS_LE64;
2818 }
2819 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2820 r_type = R_390_TLS_IE64;
2821
2822 if (r_type == R_390_TLS_LE64)
2823 {
2824 /* This relocation gets optimized away by the local exec
2825 access optimization. */
2826 BFD_ASSERT (! unresolved_reloc);
2827 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2828 contents + rel->r_offset);
2829 continue;
2830 }
2831
f41345a7 2832 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2833 abort ();
2834
2835 if (h != NULL)
2836 off = h->got.offset;
2837 else
2838 {
2839 if (local_got_offsets == NULL)
2840 abort ();
2841
2842 off = local_got_offsets[r_symndx];
2843 }
2844
2845 emit_tls_relocs:
2846
2847 if ((off & 1) != 0)
2848 off &= ~1;
26e41594 2849 else
69fc87f1
MS		 2850 {
2851 Elf_Internal_Rela outrel;
2852 bfd_byte *loc;
2853 int dr_type, indx;
2854
f41345a7 2855 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2856 abort ();
2857
f41345a7
AK		 2858 outrel.r_offset = (htab->elf.sgot->output_section->vma
2859 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2860
2861 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2862 if (r_type == R_390_TLS_GD64)
2863 dr_type = R_390_TLS_DTPMOD;
2864 else
2865 dr_type = R_390_TLS_TPOFF;
2866 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2867 outrel.r_addend = relocation - dtpoff_base (info);
2868 else
2869 outrel.r_addend = 0;
2870 outrel.r_info = ELF64_R_INFO (indx, dr_type);
f41345a7
AK		 2871 loc = htab->elf.srelgot->contents;
2872 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2873 * sizeof (Elf64_External_Rela);
2874 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2875
2876 if (r_type == R_390_TLS_GD64)
2877 {
2878 if (indx == 0)
2879 {
07d6d2b8 2880 BFD_ASSERT (! unresolved_reloc);
69fc87f1
MS		 2881 bfd_put_64 (output_bfd,
2882 relocation - dtpoff_base (info),
f41345a7 2883 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2884 }
2885 else
2886 {
2887 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
2888 outrel.r_offset += GOT_ENTRY_SIZE;
2889 outrel.r_addend = 0;
f41345a7 2890 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 2891 loc += sizeof (Elf64_External_Rela);
2892 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2893 }
2894 }
2895
2896 if (h != NULL)
2897 h->got.offset |= 1;
2898 else
2899 local_got_offsets[r_symndx] |= 1;
2900 }
2901
2902 if (off >= (bfd_vma) -2)
2903 abort ();
2904 if (r_type == ELF64_R_TYPE (rel->r_info))
2905 {
f41345a7 2906 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2907 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
f41345a7 2908 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2909 unresolved_reloc = FALSE;
2910 }
2911 else
2912 {
f41345a7 2913 bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 2914 contents + rel->r_offset);
2915 continue;
2916 }
2917 break;
2918
2919 case R_390_TLS_GOTIE12:
bd1ea41b 2920 case R_390_TLS_GOTIE20:
69fc87f1
MS		 2921 case R_390_TLS_IEENT:
2922 if (h == NULL)
2923 {
2924 if (local_got_offsets == NULL)
2925 abort();
2926 off = local_got_offsets[r_symndx];
0e1862bb 2927 if (bfd_link_pic (info))
69fc87f1
MS		 2928 goto emit_tls_relocs;
2929 }
2930 else
2931 {
2932 off = h->got.offset;
2933 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 2934 if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE)
69fc87f1
MS		 2935 goto emit_tls_relocs;
2936 }
2937
f41345a7 2938 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2939 abort ();
2940
2941 BFD_ASSERT (! unresolved_reloc);
2942 bfd_put_64 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 2943 htab->elf.sgot->contents + off);
2944 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2945 if (r_type == R_390_TLS_IEENT)
f41345a7 2946 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2947 unresolved_reloc = FALSE;
2948 break;
2949
2950 case R_390_TLS_LDM64:
0e1862bb 2951 if (! bfd_link_pic (info))
69fc87f1
MS		 2952 /* The literal pool entry this relocation refers to gets ignored
2953 by the optimized code of the local exec model. Do nothing
2954 and the value will turn out zero. */
2955 continue;
2956
f41345a7 2957 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2958 abort ();
2959
2960 off = htab->tls_ldm_got.offset;
2961 if (off & 1)
2962 off &= ~1;
2963 else
2964 {
2965 Elf_Internal_Rela outrel;
2966 bfd_byte *loc;
2967
f41345a7 2968 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2969 abort ();
2970
f41345a7
AK		 2971 outrel.r_offset = (htab->elf.sgot->output_section->vma
2972 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2973
2974 bfd_put_64 (output_bfd, 0,
f41345a7 2975 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2976 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
2977 outrel.r_addend = 0;
f41345a7
AK		 2978 loc = htab->elf.srelgot->contents;
2979 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2980 * sizeof (Elf64_External_Rela);
2981 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2982 htab->tls_ldm_got.offset |= 1;
2983 }
f41345a7 2984 relocation = htab->elf.sgot->output_offset + off;
26e41594 2985 unresolved_reloc = FALSE;
69fc87f1
MS		 2986 break;
2987
2988 case R_390_TLS_LE64:
3cbc1e5e 2989 if (bfd_link_dll (info))
69fc87f1
MS		 2990 {
2991 /* Linking a shared library with non-fpic code requires
2992 a R_390_TLS_TPOFF relocation. */
2993 Elf_Internal_Rela outrel;
2994 asection *sreloc;
2995 bfd_byte *loc;
2996 int indx;
2997
2998 outrel.r_offset = rel->r_offset
2999 + input_section->output_section->vma
3000 + input_section->output_offset;
3001 if (h != NULL && h->dynindx != -1)
3002 indx = h->dynindx;
3003 else
3004 indx = 0;
3005 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
3006 if (indx == 0)
3007 outrel.r_addend = relocation - dtpoff_base (info);
3008 else
3009 outrel.r_addend = 0;
3010 sreloc = elf_section_data (input_section)->sreloc;
3011 if (sreloc == NULL)
3012 abort ();
3013 loc = sreloc->contents;
3014 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
3015 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3016 }
3017 else
3018 {
3019 BFD_ASSERT (! unresolved_reloc);
3020 bfd_put_64 (output_bfd, -tpoff (info, relocation),
3021 contents + rel->r_offset);
3022 }
3023 continue;
3024
3025 case R_390_TLS_LDO64:
0e1862bb 3026 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 3027 relocation -= dtpoff_base (info);
3028 else
3029 /* When converting LDO to LE, we must negate. */
3030 relocation = -tpoff (info, relocation);
3031 break;
3032
3033 /* Relocations for tls instructions. */
3034 case R_390_TLS_LOAD:
3035 case R_390_TLS_GDCALL:
3036 case R_390_TLS_LDCALL:
3037 tls_type = GOT_UNKNOWN;
3038 if (h == NULL && local_got_offsets)
3039 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3040 else if (h != NULL)
3041 tls_type = elf_s390_hash_entry(h)->tls_type;
3042
3043 if (tls_type == GOT_TLS_GD)
3044 continue;
3045
3046 if (r_type == R_390_TLS_LOAD)
3047 {
0e1862bb 3048 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3049 {
3050 /* IE->LE transition. Four valid cases:
3051 lg %rx,(0,%ry) -> sllg %rx,%ry,0
3052 lg %rx,(%ry,0) -> sllg %rx,%ry,0
3053 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
3054 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
3055 unsigned int insn0, insn1, ry;
3056
3057 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3058 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3059 if (insn1 != 0x0004)
3704e358
AK		 3060 {
3061 invalid_tls_insn (input_bfd, input_section, rel);
3062 return FALSE;
3063 }
69fc87f1
MS		 3064 if ((insn0 & 0xff00f000) == 0xe3000000)
3065 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
3066 ry = (insn0 & 0x000f0000);
3067 else if ((insn0 & 0xff0f0000) == 0xe3000000)
3068 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
3069 ry = (insn0 & 0x0000f000) << 4;
3070 else if ((insn0 & 0xff00f000) == 0xe300c000)
3071 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
3072 ry = (insn0 & 0x000f0000);
3073 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
3074 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
3075 ry = (insn0 & 0x0000f000) << 4;
3076 else
3704e358
AK		 3077 {
3078 invalid_tls_insn (input_bfd, input_section, rel);
3079 return FALSE;
3080 }
69fc87f1
MS		 3081 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
3082 insn1 = 0x000d;
3083 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3084 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3085 }
3086 }
3087 else if (r_type == R_390_TLS_GDCALL)
3088 {
3089 unsigned int insn0, insn1;
3090
3091 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3092 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3093 if ((insn0 & 0xffff0000) != 0xc0e50000)
3704e358
AK		 3094 {
3095 invalid_tls_insn (input_bfd, input_section, rel);
3096 return FALSE;
3097 }
0e1862bb 3098 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3099 {
3100 /* GD->LE transition.
3101 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3102 insn0 = 0xc0040000;
3103 insn1 = 0x0000;
3104 }
3105 else
3106 {
3107 /* GD->IE transition.
3108 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
3109 insn0 = 0xe322c000;
3110 insn1 = 0x0004;
3111 }
3112 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3113 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3114 }
3115 else if (r_type == R_390_TLS_LDCALL)
3116 {
0e1862bb 3117 if (!bfd_link_pic (info))
69fc87f1
MS		 3118 {
3119 unsigned int insn0, insn1;
3120
3121 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3122 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3123 if ((insn0 & 0xffff0000) != 0xc0e50000)
3704e358
AK		 3124 {
3125 invalid_tls_insn (input_bfd, input_section, rel);
3126 return FALSE;
3127 }
69fc87f1
MS		 3128 /* LD->LE transition.
3129 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3130 insn0 = 0xc0040000;
3131 insn1 = 0x0000;
3132 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3133 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3134 }
3135 }
3136 continue;
3137
947216bf
AM		 3138 default:
3139 break;
3140 }
a85d7ed0 3141
239e1f3a
AM		 3142 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3143 because such sections are not SEC_ALLOC and thus ld.so will
3144 not process them. */
0451c93c 3145 if (unresolved_reloc
239e1f3a 3146 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3147 && h->def_dynamic)
3148 && _bfd_elf_section_offset (output_bfd, info, input_section,
3149 rel->r_offset) != (bfd_vma) -1)
4eca0228 3150 _bfd_error_handler
695344c0 3151 /* xgettext:c-format */
2dcf00ce
AM		 3152 (_("%pB(%pA+%#" PRIx64 "): "
3153 "unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3154 input_bfd,
3155 input_section,
2dcf00ce 3156 (uint64_t) rel->r_offset,
843fe662 3157 howto->name,
0451c93c
MS		 3158 h->root.root.string);
3159
470b557a
AK		 3160 do_relocation:
3161
fb798c50
AK		 3162 /* When applying a 24 bit reloc we need to start one byte
3163 earlier. Otherwise the 32 bit get/put bfd operations might
3164 access a byte after the actual section. */
3165 if (r_type == R_390_PC24DBL
3166 || r_type == R_390_PLT24DBL)
3167 rel->r_offset--;
3168
bd1ea41b
MS		 3169 if (r_type == R_390_20
3170 || r_type == R_390_GOT20
3171 || r_type == R_390_GOTPLT20
3172 || r_type == R_390_TLS_GOTIE20)
3173 {
3174 relocation += rel->r_addend;
3175 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3176 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3177 contents, rel->r_offset,
3178 relocation, 0);
3179 }
3180 else
3181 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
a85d7ed0
NC		 3182 contents, rel->r_offset,
3183 relocation, rel->r_addend);
3184
3185 if (r != bfd_reloc_ok)
3186 {
0451c93c 3187 const char *name;
ec338859 3188
0451c93c
MS		 3189 if (h != NULL)
3190 name = h->root.root.string;
3191 else
a85d7ed0 3192 {
0451c93c
MS		 3193 name = bfd_elf_string_from_elf_section (input_bfd,
3194 symtab_hdr->sh_link,
3195 sym->st_name);
3196 if (name == NULL)
b34976b6 3197 return FALSE;
0451c93c 3198 if (*name == '\0')
fd361982 3199 name = bfd_section_name (sec);
0451c93c 3200 }
ec338859 3201
0451c93c 3202 if (r == bfd_reloc_overflow)
1a72702b
AM		 3203 (*info->callbacks->reloc_overflow)
3204 (info, (h ? &h->root : NULL), name, howto->name,
3205 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
0451c93c
MS		 3206 else
3207 {
4eca0228 3208 _bfd_error_handler
695344c0 3209 /* xgettext:c-format */
2dcf00ce 3210 (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"),
d003868e 3211 input_bfd, input_section,
2dcf00ce 3212 (uint64_t) rel->r_offset, name, (int) r);
b34976b6 3213 return FALSE;
a85d7ed0
NC		 3214 }
3215 }
3216 }
3217
b34976b6 3218 return TRUE;
a85d7ed0
NC		 3219}
3220
470b557a
AK		 3221/* Generate the PLT slots together with the dynamic relocations needed
3222 for IFUNC symbols. */
3223
3224static void
3225elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3226 struct bfd_link_info *info,
3227 struct elf_link_hash_entry *h,
3228 struct elf_s390_link_hash_table *htab,
3229 bfd_vma plt_offset,
3230 bfd_vma resolver_address)
3231{
3232 bfd_vma plt_index;
3233 bfd_vma got_offset;
3234 Elf_Internal_Rela rela;
3235 bfd_byte *loc;
3236 asection *plt, *gotplt, *relplt;
3237
3238 if (htab->elf.iplt == NULL
3239 || htab->elf.igotplt == NULL
3240 || htab->elf.irelplt == NULL)
3241 abort ();
3242
3243 /* Index of the PLT slot within iplt section. */
3244 plt_index = plt_offset / PLT_ENTRY_SIZE;
3245 plt = htab->elf.iplt;
3246 /* Offset into the igot.plt section. */
3247 got_offset = plt_index * GOT_ENTRY_SIZE;
3248 gotplt = htab->elf.igotplt;
3249 relplt = htab->elf.irelplt;
3250
3251 /* Fill in the blueprint of a PLT. */
3252 memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
3253 PLT_ENTRY_SIZE);
3254
3255 /* Fixup the relative address to the GOT entry */
3256 bfd_put_32 (output_bfd,
3257 (gotplt->output_section->vma +
3258 gotplt->output_offset + got_offset
3259 - (plt->output_section->vma +
3260 plt->output_offset +
3261 plt_offset))/2,
3262 plt->contents + plt_offset + 2);
3263 /* Fixup the relative branch to PLT 0 */
3264 bfd_put_32 (output_bfd, - (plt->output_offset +
3265 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3266 plt->contents + plt_offset + 24);
3267 /* Fixup offset into .rela.plt section. */
3268 bfd_put_32 (output_bfd, relplt->output_offset +
3269 plt_index * sizeof (Elf64_External_Rela),
3270 plt->contents + plt_offset + 28);
3271
3272 /* Fill in the entry in the global offset table.
3273 Points to instruction after GOT offset. */
3274 bfd_put_64 (output_bfd,
3275 (plt->output_section->vma
3276 + plt->output_offset
3277 + plt_offset
3278 + 14),
3279 gotplt->contents + got_offset);
3280
3281 /* Fill in the entry in the .rela.plt section. */
3282 rela.r_offset = (gotplt->output_section->vma
3283 + gotplt->output_offset
3284 + got_offset);
3285
3286 if (!h
3287 || h->dynindx == -1
0e1862bb 3288 || ((bfd_link_executable (info)
470b557a
AK		 3289 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3290 && h->def_regular))
3291 {
3292 /* The symbol can be locally resolved. */
3293 rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
3294 rela.r_addend = resolver_address;
3295 }
3296 else
3297 {
3298 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3299 rela.r_addend = 0;
3300 }
3301
3302 loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
3303 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3304}
3305
3306
a85d7ed0
NC		 3307/* Finish up dynamic symbol handling. We set the contents of various
3308 dynamic sections here. */
3309
b34976b6 3310static bfd_boolean
4dfe6ac6
NC		 3311elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3312 struct bfd_link_info *info,
3313 struct elf_link_hash_entry *h,
3314 Elf_Internal_Sym *sym)
a85d7ed0 3315{
0451c93c 3316 struct elf_s390_link_hash_table *htab;
470b557a 3317 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
a85d7ed0 3318
0451c93c 3319 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3320 if (htab == NULL)
3321 return FALSE;
a85d7ed0
NC		 3322
3323 if (h->plt.offset != (bfd_vma) -1)
3324 {
a85d7ed0 3325 bfd_vma plt_index;
afca762f 3326 bfd_vma gotplt_offset;
0451c93c 3327 Elf_Internal_Rela rela;
947216bf 3328 bfd_byte *loc;
a85d7ed0
NC		 3329
3330 /* This symbol has an entry in the procedure linkage table. Set
947216bf 3331 it up. */
0a511368 3332 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
470b557a 3333 {
0a511368
AK		 3334 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3335 htab, h->plt.offset,
3336 eh->ifunc_resolver_address +
3337 eh->ifunc_resolver_section->output_offset +
3338 eh->ifunc_resolver_section->output_section->vma);
3339
3340 /* Do not return yet. Handling of explicit GOT slots of
3341 IFUNC symbols is below. */
470b557a
AK		 3342 }
3343 else
3344 {
3345 if (h->dynindx == -1
3346 || htab->elf.splt == NULL
3347 || htab->elf.sgotplt == NULL
3348 || htab->elf.srelplt == NULL)
3349 abort ();
a85d7ed0 3350
470b557a
AK		 3351 /* Calc. index no.
3352 Current offset - size first entry / entry size. */
3353 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
a85d7ed0 3354
afca762f
AK		 3355 /* The slots in the .got.plt correspond to the PLT slots in
3356 the same order. */
3357 gotplt_offset = plt_index * GOT_ENTRY_SIZE;
3358
3359 /* If .got.plt comes first it needs to contain the 3 header
3360 entries. */
3361 if (!s390_gotplt_after_got_p (info))
3362 gotplt_offset += 3 * GOT_ENTRY_SIZE;
a85d7ed0 3363
470b557a
AK		 3364 /* Fill in the blueprint of a PLT. */
3365 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
3366 PLT_ENTRY_SIZE);
3367
afca762f
AK		 3368 /* The first instruction in the PLT entry is a LARL loading
3369 the address of the GOT slot. We write the 4 byte
3370 immediate operand of the LARL instruction here. */
470b557a
AK		 3371 bfd_put_32 (output_bfd,
3372 (htab->elf.sgotplt->output_section->vma +
afca762f 3373 htab->elf.sgotplt->output_offset + gotplt_offset
470b557a
AK		 3374 - (htab->elf.splt->output_section->vma +
3375 htab->elf.splt->output_offset +
3376 h->plt.offset))/2,
3377 htab->elf.splt->contents + h->plt.offset + 2);
3378 /* Fixup the relative branch to PLT 0 */
3379 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3380 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3381 htab->elf.splt->contents + h->plt.offset + 24);
3382 /* Fixup offset into .rela.plt section. */
3383 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3384 htab->elf.splt->contents + h->plt.offset + 28);
3385
3386 /* Fill in the entry in the global offset table.
3387 Points to instruction after GOT offset. */
3388 bfd_put_64 (output_bfd,
3389 (htab->elf.splt->output_section->vma
3390 + htab->elf.splt->output_offset
3391 + h->plt.offset
3392 + 14),
afca762f 3393 htab->elf.sgotplt->contents + gotplt_offset);
470b557a
AK		 3394
3395 /* Fill in the entry in the .rela.plt section. */
3396 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3397 + htab->elf.sgotplt->output_offset
afca762f 3398 + gotplt_offset);
470b557a
AK		 3399 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3400 rela.r_addend = 0;
3401 loc = htab->elf.srelplt->contents + plt_index *
3402 sizeof (Elf64_External_Rela);
3403 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3404
3405 if (!h->def_regular)
3406 {
3407 /* Mark the symbol as undefined, rather than as defined in
3408 the .plt section. Leave the value alone. This is a clue
3409 for the dynamic linker, to make function pointer
3410 comparisons work between an application and shared
3411 library. */
3412 sym->st_shndx = SHN_UNDEF;
3413 }
a85d7ed0
NC		 3414 }
3415 }
3416
69fc87f1
MS		 3417 if (h->got.offset != (bfd_vma) -1
3418 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3419 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3420 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3421 {
a85d7ed0 3422 Elf_Internal_Rela rela;
947216bf 3423 bfd_byte *loc;
a85d7ed0
NC		 3424
3425 /* This symbol has an entry in the global offset table. Set it
947216bf 3426 up. */
f41345a7 3427 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3428 abort ();
a85d7ed0 3429
f41345a7
AK		 3430 rela.r_offset = (htab->elf.sgot->output_section->vma
3431 + htab->elf.sgot->output_offset
dc810e39 3432 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0 3433
470b557a
AK		 3434 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3435 {
0e1862bb 3436 if (bfd_link_pic (info))
470b557a
AK		 3437 {
3438 /* An explicit GOT slot usage needs GLOB_DAT. If the
3439 symbol references local the implicit got.iplt slot
3440 will be used and the IRELATIVE reloc has been created
3441 above. */
3442 goto do_glob_dat;
3443 }
3444 else
3445 {
3446 /* For non-shared objects explicit GOT slots must be
3447 filled with the PLT slot address for pointer
3448 equality reasons. */
3449 bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
3450 + htab->elf.iplt->output_offset
3451 + h->plt.offset),
3452 htab->elf.sgot->contents + h->got.offset);
3453 return TRUE;
3454 }
3455 }
0e1862bb 3456 else if (bfd_link_pic (info)
ceada896 3457 && SYMBOL_REFERENCES_LOCAL (info, h))
947216bf 3458 {
10e7c045
AK		 3459 if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
3460 return TRUE;
3461
470b557a
AK		 3462 /* If this is a static link, or it is a -Bsymbolic link and
3463 the symbol is defined locally or was forced to be local
3464 because of a version file, we just want to emit a
3465 RELATIVE reloc. The entry in the global offset table
3466 will already have been initialized in the
3467 relocate_section function. */
8170f769 3468 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
8c21ca21 3469 return FALSE;
0451c93c 3470 BFD_ASSERT((h->got.offset & 1) != 0);
947216bf
AM		 3471 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3472 rela.r_addend = (h->root.u.def.value
3473 + h->root.u.def.section->output_section->vma
3474 + h->root.u.def.section->output_offset);
3475 }
a85d7ed0
NC		 3476 else
3477 {
3478 BFD_ASSERT((h->got.offset & 1) == 0);
ceada896 3479 do_glob_dat:
f41345a7 3480 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3481 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
947216bf
AM		 3482 rela.r_addend = 0;
3483 }
a85d7ed0 3484
f41345a7
AK		 3485 loc = htab->elf.srelgot->contents;
3486 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3487 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3488 }
3489
f5385ebf 3490 if (h->needs_copy)
a85d7ed0 3491 {
a85d7ed0 3492 Elf_Internal_Rela rela;
5474d94f 3493 asection *s;
947216bf 3494 bfd_byte *loc;
a85d7ed0
NC		 3495
3496 /* This symbols needs a copy reloc. Set it up. */
3497
0451c93c
MS		 3498 if (h->dynindx == -1
3499 || (h->root.type != bfd_link_hash_defined
3500 && h->root.type != bfd_link_hash_defweak)
9d19e4fd 3501 || htab->elf.srelbss == NULL)
0451c93c 3502 abort ();
a85d7ed0
NC		 3503
3504 rela.r_offset = (h->root.u.def.value
3505 + h->root.u.def.section->output_section->vma
3506 + h->root.u.def.section->output_offset);
3507 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3508 rela.r_addend = 0;
afbf7e8e 3509 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 3510 s = htab->elf.sreldynrelro;
3511 else
3512 s = htab->elf.srelbss;
3513 loc = s->contents + s->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3514 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3515 }
3516
3517 /* Mark some specially defined symbols as absolute. */
9637f6ef 3518 if (h == htab->elf.hdynamic
22edb2f1
RS		 3519 || h == htab->elf.hgot
3520 || h == htab->elf.hplt)
a85d7ed0
NC		 3521 sym->st_shndx = SHN_ABS;
3522
b34976b6 3523 return TRUE;
a85d7ed0
NC		 3524}
3525
0451c93c
MS		 3526/* Used to decide how to sort relocs in an optimal manner for the
3527 dynamic linker, before writing them out. */
3528
3529static enum elf_reloc_type_class
7e612e98
AM		 3530elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3531 const asection *rel_sec ATTRIBUTE_UNUSED,
3532 const Elf_Internal_Rela *rela)
0451c93c 3533{
0f042c67
AK		 3534 bfd *abfd = info->output_bfd;
3535 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3536 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3537 unsigned long r_symndx = ELF64_R_SYM (rela->r_info);
3538 Elf_Internal_Sym sym;
3539
3540 if (htab->elf.dynsym == NULL
3541 || !bed->s->swap_symbol_in (abfd,
3542 (htab->elf.dynsym->contents
3543 + r_symndx * bed->s->sizeof_sym),
3544 0, &sym))
3545 abort ();
3546
3547 /* Check relocation against STT_GNU_IFUNC symbol. */
3548 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3549 return reloc_class_ifunc;
3550
0451c93c
MS		 3551 switch ((int) ELF64_R_TYPE (rela->r_info))
3552 {
3553 case R_390_RELATIVE:
3554 return reloc_class_relative;
3555 case R_390_JMP_SLOT:
3556 return reloc_class_plt;
3557 case R_390_COPY:
3558 return reloc_class_copy;
3559 default:
3560 return reloc_class_normal;
3561 }
3562}
3563
a85d7ed0
NC		 3564/* Finish up the dynamic sections. */
3565
b34976b6 3566static bfd_boolean
4dfe6ac6
NC		 3567elf_s390_finish_dynamic_sections (bfd *output_bfd,
3568 struct bfd_link_info *info)
a85d7ed0 3569{
0451c93c 3570 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3571 bfd *dynobj;
3572 asection *sdyn;
470b557a
AK		 3573 bfd *ibfd;
3574 unsigned int i;
a85d7ed0 3575
0451c93c 3576 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3577 if (htab == NULL)
3578 return FALSE;
3579
0451c93c 3580 dynobj = htab->elf.dynobj;
3d4d4302 3581 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3582
0451c93c 3583 if (htab->elf.dynamic_sections_created)
a85d7ed0 3584 {
a85d7ed0
NC		 3585 Elf64_External_Dyn *dyncon, *dynconend;
3586
f41345a7 3587 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3588 abort ();
a85d7ed0
NC		 3589
3590 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 3591 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3592 for (; dyncon < dynconend; dyncon++)
3593 {
3594 Elf_Internal_Dyn dyn;
a85d7ed0 3595 asection *s;
ec338859 3596
a85d7ed0 3597 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3598
a85d7ed0
NC		 3599 switch (dyn.d_tag)
3600 {
3601 default:
0451c93c 3602 continue;
ec338859 3603
a85d7ed0 3604 case DT_PLTGOT:
afca762f
AK		 3605 /* DT_PLTGOT matches _GLOBAL_OFFSET_TABLE_ */
3606 dyn.d_un.d_ptr = s390_got_pointer (info);
0451c93c 3607 break;
ec338859 3608
a85d7ed0 3609 case DT_JMPREL:
4ade44b7
AM		 3610 s = htab->elf.srelplt;
3611 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a85d7ed0 3612 break;
ec338859 3613
a85d7ed0 3614 case DT_PLTRELSZ:
79c12fae
AK		 3615 dyn.d_un.d_val = htab->elf.srelplt->size;
3616 if (htab->elf.irelplt)
3617 dyn.d_un.d_val += htab->elf.irelplt->size;
a85d7ed0 3618 break;
ec338859 3619
a85d7ed0
NC		 3620 case DT_RELASZ:
3621 /* The procedure linkage table relocs (DT_JMPREL) should
3622 not be included in the overall relocs (DT_RELA).
3623 Therefore, we override the DT_RELASZ entry here to
3624 make it not include the JMPREL relocs. Since the
3625 linker script arranges for .rela.plt to follow all
3626 other relocation sections, we don't have to worry
3627 about changing the DT_RELA entry. */
79c12fae
AK		 3628 dyn.d_un.d_val -= htab->elf.srelplt->size;
3629 if (htab->elf.irelplt)
3630 dyn.d_un.d_val -= htab->elf.irelplt->size;
a85d7ed0
NC		 3631 break;
3632 }
0451c93c
MS		 3633
3634 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3635 }
3636
3637 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3638 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0
NC		 3639 {
3640 /* fill in blueprint for plt 0 entry */
f41345a7 3641 memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
9aa17453 3642 PLT_FIRST_ENTRY_SIZE);
afca762f
AK		 3643 /* The second instruction in the first PLT entry is a LARL
3644 loading the GOT pointer. Fill in the LARL immediate
3645 address. */
a85d7ed0 3646 bfd_put_32 (output_bfd,
afca762f 3647 (s390_got_pointer (info)
161db279
AK		 3648 - htab->elf.splt->output_section->vma
3649 - htab->elf.splt->output_offset - 6)/2,
f41345a7 3650 htab->elf.splt->contents + 8);
a85d7ed0 3651 }
387f8054
MR		 3652 if (elf_section_data (htab->elf.splt->output_section) != NULL)
3653 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
3654 = PLT_ENTRY_SIZE;
a85d7ed0
NC		 3655 }
3656
afca762f 3657 if (htab->elf.hgot && htab->elf.hgot->root.u.def.section)
a85d7ed0 3658 {
0451c93c 3659 /* Fill in the first three entries in the global offset table. */
afca762f 3660 if (htab->elf.hgot->root.u.def.section->size > 0)
0451c93c
MS		 3661 {
3662 bfd_put_64 (output_bfd,
3663 (sdyn == NULL ? (bfd_vma) 0
3664 : sdyn->output_section->vma + sdyn->output_offset),
afca762f 3665 htab->elf.hgot->root.u.def.section->contents);
0451c93c 3666 /* One entry for shared object struct ptr. */
afca762f
AK		 3667 bfd_put_64 (output_bfd, (bfd_vma) 0,
3668 htab->elf.hgot->root.u.def.section->contents + 8);
0451c93c 3669 /* One entry for _dl_runtime_resolve. */
afca762f
AK		 3670 bfd_put_64 (output_bfd, (bfd_vma) 0,
3671 htab->elf.hgot->root.u.def.section->contents + 16);
0451c93c 3672 }
f41345a7 3673 elf_section_data (htab->elf.sgot->output_section)
0451c93c
MS		 3674 ->this_hdr.sh_entsize = 8;
3675 }
470b557a
AK		 3676
3677 /* Finish dynamic symbol for local IFUNC symbols. */
c72f2fb2 3678 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
470b557a
AK		 3679 {
3680 struct plt_entry *local_plt;
3681 Elf_Internal_Sym *isym;
3682 Elf_Internal_Shdr *symtab_hdr;
3683
3684 symtab_hdr = &elf_symtab_hdr (ibfd);
3685
1ef692ea
AK		 3686 if (!is_s390_elf (ibfd))
3687 continue;
3688
470b557a
AK		 3689 local_plt = elf_s390_local_plt (ibfd);
3690 if (local_plt != NULL)
3691 for (i = 0; i < symtab_hdr->sh_info; i++)
3692 {
3693 if (local_plt[i].plt.offset != (bfd_vma) -1)
3694 {
3695 asection *sec = local_plt[i].sec;
3696 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3697 if (isym == NULL)
3698 return FALSE;
3699
3700 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3701 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3702 local_plt[i].plt.offset,
3703 isym->st_value
3704 + sec->output_section->vma
3705 + sec->output_offset);
3706
3707 }
3708 }
3709 }
3710
b34976b6 3711 return TRUE;
a85d7ed0 3712}
e3e9290d
AA		 3713\f
3714/* Support for core dump NOTE sections. */
a85d7ed0 3715
e3e9290d
AA		 3716static bfd_boolean
3717elf_s390_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3718{
3719 int offset;
3720 size_t size;
3721
3722 switch (note->descsz)
3723 {
3724 default:
3725 return FALSE;
3726
3727 case 336: /* sizeof(struct elf_prstatus) on s390x */
3728 /* pr_cursig */
3729 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
3730
3731 /* pr_pid */
3732 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
3733
3734 /* pr_reg */
3735 offset = 112;
3736 size = 216;
3737 break;
3738 }
3739
3740 /* Make a ".reg/999" section. */
3741 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3742 size, note->descpos + offset);
3743}
3744
3745static bfd_boolean
3746elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3747{
3748 switch (note->descsz)
3749 {
3750 default:
3751 return FALSE;
3752
3753 case 136: /* sizeof(struct elf_prpsinfo) on s390x */
3754 elf_tdata (abfd)->core->pid
3755 = bfd_get_32 (abfd, note->descdata + 24);
3756 elf_tdata (abfd)->core->program
3757 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
3758 elf_tdata (abfd)->core->command
3759 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
3760 }
3761
3762 /* Note that for some reason, a spurious space is tacked
3763 onto the end of the args in some (at least one anyway)
3764 implementations, so strip it off if it exists. */
3765
3766 {
3767 char *command = elf_tdata (abfd)->core->command;
3768 int n = strlen (command);
3769
3770 if (0 < n && command[n - 1] == ' ')
3771 command[n - 1] = '\0';
3772 }
3773
3774 return TRUE;
3775}
3776
3777static char *
3778elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
3779 int note_type, ...)
3780{
3781 va_list ap;
3782
3783 switch (note_type)
3784 {
3785 default:
3786 return NULL;
3787
3788 case NT_PRPSINFO:
3789 {
602f1657 3790 char data[136] ATTRIBUTE_NONSTRING = { 0 };
e3e9290d
AA		 3791 const char *fname, *psargs;
3792
3793 va_start (ap, note_type);
3794 fname = va_arg (ap, const char *);
3795 psargs = va_arg (ap, const char *);
3796 va_end (ap);
3797
3798 strncpy (data + 40, fname, 16);
898ade12 3799#if GCC_VERSION == 8000 || GCC_VERSION == 8001
95da9854 3800 DIAGNOSTIC_PUSH;
be3e27bb 3801 /* GCC 8.0 and 8.1 warn about 80 equals destination size with
95da9854
L		 3802 -Wstringop-truncation:
3803 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643
3804 */
95da9854
L		 3805 DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION;
3806#endif
e3e9290d 3807 strncpy (data + 56, psargs, 80);
898ade12 3808#if GCC_VERSION == 8000 || GCC_VERSION == 8001
95da9854 3809 DIAGNOSTIC_POP;
fe75810f 3810#endif
e3e9290d
AA		 3811 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3812 &data, sizeof (data));
3813 }
3814
3815 case NT_PRSTATUS:
3816 {
3817 char data[336] = { 0 };
3818 long pid;
3819 int cursig;
3820 const void *gregs;
3821
3822 va_start (ap, note_type);
3823 pid = va_arg (ap, long);
3824 cursig = va_arg (ap, int);
3825 gregs = va_arg (ap, const void *);
3826 va_end (ap);
3827
3828 bfd_put_16 (abfd, cursig, data + 12);
3829 bfd_put_32 (abfd, pid, data + 32);
3830 memcpy (data + 112, gregs, 216);
3831 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3832 &data, sizeof (data));
3833 }
3834 }
3835 /* NOTREACHED */
3836}
3837\f
4c45e5c9
JJ		 3838/* Return address for Ith PLT stub in section PLT, for relocation REL
3839 or (bfd_vma) -1 if it should not be included. */
3840
3841static bfd_vma
3842elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3843 const arelent *rel ATTRIBUTE_UNUSED)
3844{
3845 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3846}
3847
643f7afb
AK		 3848/* Merge backend specific data from an object file to the output
3849 object file when linking. */
3850
3851static bfd_boolean
50e03d47 3852elf64_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
643f7afb 3853{
50e03d47 3854 if (!is_s390_elf (ibfd) || !is_s390_elf (info->output_bfd))
643f7afb
AK		 3855 return TRUE;
3856
50e03d47 3857 return elf_s390_merge_obj_attributes (ibfd, info);
643f7afb
AK		 3858}
3859
b4cbbe8f
AK		 3860/* We may add a PT_S390_PGSTE program header. */
3861
3862static int
3863elf_s390_additional_program_headers (bfd *abfd ATTRIBUTE_UNUSED,
3864 struct bfd_link_info *info)
3865{
3866 struct elf_s390_link_hash_table *htab;
3867
93ec5e23
AK		 3868 if (info)
3869 {
3870 htab = elf_s390_hash_table (info);
3871 if (htab)
3872 return htab->params->pgste;
3873 }
3874 return 0;
b4cbbe8f
AK		 3875}
3876
3877
3878/* Add the PT_S390_PGSTE program header. */
3879
3880static bfd_boolean
93ec5e23 3881elf_s390_modify_segment_map (bfd *abfd, struct bfd_link_info *info)
b4cbbe8f
AK		 3882{
3883 struct elf_s390_link_hash_table *htab;
3884 struct elf_segment_map *m, *pm = NULL;
3885
93ec5e23
AK		 3886 if (!abfd || !info)
3887 return TRUE;
3888
b4cbbe8f 3889 htab = elf_s390_hash_table (info);
93ec5e23 3890 if (!htab || !htab->params->pgste)
b4cbbe8f
AK		 3891 return TRUE;
3892
3893 /* If there is already a PT_S390_PGSTE header, avoid adding
3894 another. */
3895 m = elf_seg_map (abfd);
3896 while (m && m->p_type != PT_S390_PGSTE)
3897 {
3898 pm = m;
3899 m = m->next;
3900 }
3901
3902 if (m)
3903 return TRUE;
3904
3905 m = (struct elf_segment_map *)
3906 bfd_zalloc (abfd, sizeof (struct elf_segment_map));
3907 if (m == NULL)
3908 return FALSE;
3909 m->p_type = PT_S390_PGSTE;
3910 m->count = 0;
3911 m->next = NULL;
3912 if (pm)
3913 pm->next = m;
3914
3915 return TRUE;
3916}
3917
3918bfd_boolean
3919bfd_elf_s390_set_options (struct bfd_link_info *info,
3920 struct s390_elf_params *params)
3921{
3922 struct elf_s390_link_hash_table *htab;
3923
93ec5e23
AK		 3924 if (info)
3925 {
3926 htab = elf_s390_hash_table (info);
3927 if (htab)
3928 htab->params = params;
3929 }
b4cbbe8f
AK		 3930
3931 return TRUE;
3932}
3933
3934
ae9a127f
NC		 3935/* Why was the hash table entry size definition changed from
3936 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3937 this is the only reason for the s390_elf64_size_info structure. */
a85d7ed0
NC		 3938
3939const struct elf_size_info s390_elf64_size_info =
3940{
3941 sizeof (Elf64_External_Ehdr),
3942 sizeof (Elf64_External_Phdr),
3943 sizeof (Elf64_External_Shdr),
3944 sizeof (Elf64_External_Rel),
3945 sizeof (Elf64_External_Rela),
3946 sizeof (Elf64_External_Sym),
3947 sizeof (Elf64_External_Dyn),
3948 sizeof (Elf_External_Note),
ae9a127f
NC		 3949 8, /* hash-table entry size. */
3950 1, /* internal relocations per external relocations. */
3951 64, /* arch_size. */
45d6a902 3952 3, /* log_file_align. */
a85d7ed0
NC		 3953 ELFCLASS64, EV_CURRENT,
3954 bfd_elf64_write_out_phdrs,
3955 bfd_elf64_write_shdrs_and_ehdr,
1489a3a0 3956 bfd_elf64_checksum_contents,
a85d7ed0 3957 bfd_elf64_write_relocs,
73ff0d56 3958 bfd_elf64_swap_symbol_in,
a85d7ed0
NC		 3959 bfd_elf64_swap_symbol_out,
3960 bfd_elf64_slurp_reloc_table,
3961 bfd_elf64_slurp_symbol_table,
3962 bfd_elf64_swap_dyn_in,
3963 bfd_elf64_swap_dyn_out,
947216bf
AM		 3964 bfd_elf64_swap_reloc_in,
3965 bfd_elf64_swap_reloc_out,
3966 bfd_elf64_swap_reloca_in,
3967 bfd_elf64_swap_reloca_out
a85d7ed0
NC		 3968};
3969
6d00b590 3970#define TARGET_BIG_SYM s390_elf64_vec
a85d7ed0
NC		 3971#define TARGET_BIG_NAME "elf64-s390"
3972#define ELF_ARCH bfd_arch_s390
ae95ffa6 3973#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 3974#define ELF_MACHINE_CODE EM_S390
3975#define ELF_MACHINE_ALT1 EM_S390_OLD
3976#define ELF_MAXPAGESIZE 0x1000
3977
3978#define elf_backend_size_info s390_elf64_size_info
3979
3980#define elf_backend_can_gc_sections 1
51b64d56 3981#define elf_backend_can_refcount 1
a85d7ed0
NC		 3982#define elf_backend_want_got_plt 1
3983#define elf_backend_plt_readonly 1
3984#define elf_backend_want_plt_sym 0
3985#define elf_backend_got_header_size 24
5474d94f 3986#define elf_backend_want_dynrelro 1
b491616a 3987#define elf_backend_rela_normal 1
a85d7ed0
NC		 3988
3989#define elf_info_to_howto elf_s390_info_to_howto
3990
a85d7ed0
NC		 3991#define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3992#define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3993#define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
07d6d2b8 3994#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
643f7afb 3995#define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
a85d7ed0
NC		 3996
3997#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3998#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c 3999#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
9d19e4fd 4000#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
a85d7ed0
NC		 4001#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4002#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
4003#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
0451c93c 4004#define elf_backend_reloc_type_class elf_s390_reloc_type_class
a85d7ed0
NC		 4005#define elf_backend_relocate_section elf_s390_relocate_section
4006#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 4007#define elf_backend_init_index_section _bfd_elf_init_1_index_section
e3e9290d
AA		 4008#define elf_backend_grok_prstatus elf_s390_grok_prstatus
4009#define elf_backend_grok_psinfo elf_s390_grok_psinfo
4010#define elf_backend_write_core_note elf_s390_write_core_note
4c45e5c9 4011#define elf_backend_plt_sym_val elf_s390_plt_sym_val
07d6d2b8 4012#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
b4cbbe8f
AK		 4013#define elf_backend_additional_program_headers elf_s390_additional_program_headers
4014#define elf_backend_modify_segment_map elf_s390_modify_segment_map
a85d7ed0 4015
69fc87f1
MS		 4016#define bfd_elf64_mkobject elf_s390_mkobject
4017#define elf_backend_object_p elf_s390_object_p
a85d7ed0
NC		 4018
4019#include "elf64-target.h"
GDB Binutils - Deliverables
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