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ubsan: nios2: left shift cannot be represented in type 'int'
[deliverable/binutils-gdb.git] / bfd / elf64-s390.c
CommitLineData
a85d7ed0 1/* IBM S/390-specific support for 64-bit ELF
82704155 2 Copyright (C) 2000-2019 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
0451c93c 574 /* Track dynamic relocs copied for this symbol. */
00d8c7a9 575 struct elf_dyn_relocs *dyn_relocs;
5236c819
MS		 576
577 /* Number of GOTPLT references for a function. */
578 bfd_signed_vma gotplt_refcount;
69fc87f1
MS		 579
580#define GOT_UNKNOWN 0
581#define GOT_NORMAL 1
582#define GOT_TLS_GD 2
583#define GOT_TLS_IE 3
584#define GOT_TLS_IE_NLT 3
585 unsigned char tls_type;
470b557a
AK		 586
587 /* For pointer equality reasons we might need to change the symbol
588 type from STT_GNU_IFUNC to STT_FUNC together with its value and
589 section entry. So after alloc_dynrelocs only these values should
590 be used. In order to check whether a symbol is IFUNC use
591 s390_is_ifunc_symbol_p. */
592 bfd_vma ifunc_resolver_address;
593 asection *ifunc_resolver_section;
a85d7ed0
NC		 594};
595
69fc87f1
MS		 596#define elf_s390_hash_entry(ent) \
597 ((struct elf_s390_link_hash_entry *)(ent))
598
470b557a
AK		 599/* This structure represents an entry in the local PLT list needed for
600 local IFUNC symbols. */
601struct plt_entry
602{
603 /* The section of the local symbol.
604 Set in relocate_section and used in finish_dynamic_sections. */
605 asection *sec;
606
607 union
608 {
609 bfd_signed_vma refcount;
610 bfd_vma offset;
611 } plt;
612};
613
0ffa91dd
NC		 614/* NOTE: Keep this structure in sync with
615 the one declared in elf32-s390.c. */
69fc87f1
MS		 616struct elf_s390_obj_tdata
617{
618 struct elf_obj_tdata root;
619
470b557a
AK		 620 /* A local PLT is needed for ifunc symbols. */
621 struct plt_entry *local_plt;
622
0ffa91dd 623 /* TLS type for each local got entry. */
69fc87f1
MS		 624 char *local_got_tls_type;
625};
626
627#define elf_s390_tdata(abfd) \
628 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
629
470b557a
AK		 630#define elf_s390_local_plt(abfd) \
631 (elf_s390_tdata (abfd)->local_plt)
632
69fc87f1
MS		 633#define elf_s390_local_got_tls_type(abfd) \
634 (elf_s390_tdata (abfd)->local_got_tls_type)
635
0ffa91dd
NC		 636#define is_s390_elf(bfd) \
637 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
638 && elf_tdata (bfd) != NULL \
4dfe6ac6 639 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 640
69fc87f1 641static bfd_boolean
62d7a5f6 642elf_s390_mkobject (bfd *abfd)
69fc87f1 643{
0ffa91dd 644 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 645 S390_ELF_DATA);
69fc87f1
MS		 646}
647
648static bfd_boolean
2c3fc389 649elf_s390_object_p (bfd *abfd)
69fc87f1 650{
69fc87f1
MS		 651 /* Set the right machine number for an s390 elf32 file. */
652 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
653}
654
a85d7ed0
NC		 655/* s390 ELF linker hash table. */
656
657struct elf_s390_link_hash_table
658{
0451c93c 659 struct elf_link_hash_table elf;
a85d7ed0 660
0451c93c 661 /* Short-cuts to get to dynamic linker sections. */
470b557a 662 asection *irelifunc;
ec338859 663
69fc87f1
MS		 664 union {
665 bfd_signed_vma refcount;
666 bfd_vma offset;
667 } tls_ldm_got;
668
87d72d41
AM		 669 /* Small local sym cache. */
670 struct sym_cache sym_cache;
b4cbbe8f
AK		 671
672 /* Options passed from the linker. */
673 struct s390_elf_params *params;
0451c93c 674};
a85d7ed0
NC		 675
676/* Get the s390 ELF linker hash table from a link_info structure. */
677
ceada896
AA		 678#define elf_s390_hash_table(p) \
679 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
680 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
a85d7ed0 681
470b557a
AK		 682#define ELF64 1
683#include "elf-s390-common.c"
684
a85d7ed0
NC		 685/* Create an entry in an s390 ELF linker hash table. */
686
687static struct bfd_hash_entry *
2c3fc389
NC		 688link_hash_newfunc (struct bfd_hash_entry *entry,
689 struct bfd_hash_table *table,
690 const char *string)
a85d7ed0 691{
a85d7ed0
NC		 692 /* Allocate the structure if it has not already been allocated by a
693 subclass. */
0451c93c
MS		 694 if (entry == NULL)
695 {
696 entry = bfd_hash_allocate (table,
697 sizeof (struct elf_s390_link_hash_entry));
698 if (entry == NULL)
699 return entry;
700 }
a85d7ed0
NC		 701
702 /* Call the allocation method of the superclass. */
0451c93c
MS		 703 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
704 if (entry != NULL)
a85d7ed0 705 {
0451c93c
MS		 706 struct elf_s390_link_hash_entry *eh;
707
708 eh = (struct elf_s390_link_hash_entry *) entry;
709 eh->dyn_relocs = NULL;
5236c819 710 eh->gotplt_refcount = 0;
69fc87f1 711 eh->tls_type = GOT_UNKNOWN;
470b557a
AK		 712 eh->ifunc_resolver_address = 0;
713 eh->ifunc_resolver_section = NULL;
a85d7ed0
NC		 714 }
715
0451c93c 716 return entry;
a85d7ed0
NC		 717}
718
719/* Create an s390 ELF linker hash table. */
720
721static struct bfd_link_hash_table *
2c3fc389 722elf_s390_link_hash_table_create (bfd *abfd)
a85d7ed0
NC		 723{
724 struct elf_s390_link_hash_table *ret;
dc810e39 725 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
a85d7ed0 726
7bf52ea2 727 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
0451c93c 728 if (ret == NULL)
a85d7ed0
NC		 729 return NULL;
730
66eb6687 731 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 732 sizeof (struct elf_s390_link_hash_entry),
733 S390_ELF_DATA))
a85d7ed0 734 {
e2d34d7d 735 free (ret);
a85d7ed0
NC		 736 return NULL;
737 }
738
0451c93c
MS		 739 return &ret->elf.root;
740}
741
0451c93c
MS		 742/* Copy the extra info we tack onto an elf_link_hash_entry. */
743
744static void
2c3fc389
NC		 745elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
746 struct elf_link_hash_entry *dir,
747 struct elf_link_hash_entry *ind)
0451c93c
MS		 748{
749 struct elf_s390_link_hash_entry *edir, *eind;
750
751 edir = (struct elf_s390_link_hash_entry *) dir;
752 eind = (struct elf_s390_link_hash_entry *) ind;
753
754 if (eind->dyn_relocs != NULL)
755 {
756 if (edir->dyn_relocs != NULL)
757 {
00d8c7a9
AK		 758 struct elf_dyn_relocs **pp;
759 struct elf_dyn_relocs *p;
0451c93c 760
fcfa13d2 761 /* Add reloc counts against the indirect sym to the direct sym
0451c93c
MS		 762 list. Merge any entries against the same section. */
763 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
764 {
00d8c7a9 765 struct elf_dyn_relocs *q;
0451c93c
MS		 766
767 for (q = edir->dyn_relocs; q != NULL; q = q->next)
768 if (q->sec == p->sec)
769 {
770 q->pc_count += p->pc_count;
771 q->count += p->count;
772 *pp = p->next;
773 break;
774 }
775 if (q == NULL)
776 pp = &p->next;
777 }
778 *pp = edir->dyn_relocs;
779 }
780
781 edir->dyn_relocs = eind->dyn_relocs;
782 eind->dyn_relocs = NULL;
783 }
784
69fc87f1
MS		 785 if (ind->root.type == bfd_link_hash_indirect
786 && dir->got.refcount <= 0)
787 {
788 edir->tls_type = eind->tls_type;
789 eind->tls_type = GOT_UNKNOWN;
790 }
791
64285810
MS		 792 if (ELIMINATE_COPY_RELOCS
793 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 794 && dir->dynamic_adjusted)
795 {
796 /* If called to transfer flags for a weakdef during processing
797 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
798 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
e81830c5
AM		 799 if (dir->versioned != versioned_hidden)
800 dir->ref_dynamic |= ind->ref_dynamic;
f5385ebf
AM		 801 dir->ref_regular |= ind->ref_regular;
802 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
803 dir->needs_plt |= ind->needs_plt;
804 }
64285810 805 else
fcfa13d2 806 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 807}
a85d7ed0 808
69fc87f1 809static int
2c3fc389
NC		 810elf_s390_tls_transition (struct bfd_link_info *info,
811 int r_type,
812 int is_local)
69fc87f1 813{
0e1862bb 814 if (bfd_link_pic (info))
69fc87f1
MS		 815 return r_type;
816
817 switch (r_type)
818 {
819 case R_390_TLS_GD64:
820 case R_390_TLS_IE64:
821 if (is_local)
822 return R_390_TLS_LE64;
823 return R_390_TLS_IE64;
824 case R_390_TLS_GOTIE64:
825 if (is_local)
826 return R_390_TLS_LE64;
827 return R_390_TLS_GOTIE64;
828 case R_390_TLS_LDM64:
829 return R_390_TLS_LE64;
830 }
831
832 return r_type;
833}
834
a85d7ed0
NC		 835/* Look through the relocs for a section during the first phase, and
836 allocate space in the global offset table or procedure linkage
837 table. */
838
b34976b6 839static bfd_boolean
4dfe6ac6
NC		 840elf_s390_check_relocs (bfd *abfd,
841 struct bfd_link_info *info,
842 asection *sec,
843 const Elf_Internal_Rela *relocs)
a85d7ed0 844{
0451c93c 845 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 846 Elf_Internal_Shdr *symtab_hdr;
847 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 848 const Elf_Internal_Rela *rel;
849 const Elf_Internal_Rela *rel_end;
a85d7ed0 850 asection *sreloc;
5236c819 851 bfd_signed_vma *local_got_refcounts;
69fc87f1 852 int tls_type, old_tls_type;
a85d7ed0 853
0e1862bb 854 if (bfd_link_relocatable (info))
b34976b6 855 return TRUE;
a85d7ed0 856
0ffa91dd
NC		 857 BFD_ASSERT (is_s390_elf (abfd));
858
0451c93c 859 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 860 if (htab == NULL)
861 return FALSE;
862
0ffa91dd 863 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 864 sym_hashes = elf_sym_hashes (abfd);
5236c819 865 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 866
a85d7ed0
NC		 867 sreloc = NULL;
868
869 rel_end = relocs + sec->reloc_count;
870 for (rel = relocs; rel < rel_end; rel++)
871 {
69fc87f1 872 unsigned int r_type;
d42c267e 873 unsigned int r_symndx;
a85d7ed0 874 struct elf_link_hash_entry *h;
470b557a 875 Elf_Internal_Sym *isym;
a85d7ed0
NC		 876
877 r_symndx = ELF64_R_SYM (rel->r_info);
878
0451c93c
MS		 879 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
880 {
695344c0 881 /* xgettext:c-format */
871b3ab2 882 _bfd_error_handler (_("%pB: bad symbol index: %d"),
4eca0228 883 abfd, r_symndx);
b34976b6 884 return FALSE;
0451c93c
MS		 885 }
886
a85d7ed0 887 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK		 888 {
889 /* A local symbol. */
890 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
891 abfd, r_symndx);
892 if (isym == NULL)
893 return FALSE;
894
895 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
896 {
897 struct plt_entry *plt;
898
0cb79d69
AK		 899 if (htab->elf.dynobj == NULL)
900 htab->elf.dynobj = abfd;
901
470b557a
AK		 902 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
903 return FALSE;
904
905 if (local_got_refcounts == NULL)
906 {
907 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
908 return FALSE;
909 local_got_refcounts = elf_local_got_refcounts (abfd);
910 }
911 plt = elf_s390_local_plt (abfd);
912 plt[r_symndx].plt.refcount++;
913 }
914 h = NULL;
915 }
a85d7ed0 916 else
973a3492
L		 917 {
918 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
919 while (h->root.type == bfd_link_hash_indirect
920 || h->root.type == bfd_link_hash_warning)
921 h = (struct elf_link_hash_entry *) h->root.u.i.link;
922 }
a85d7ed0 923
5236c819
MS		 924 /* Create got section and local_got_refcounts array if they
925 are needed. */
69fc87f1
MS		 926 r_type = elf_s390_tls_transition (info,
927 ELF64_R_TYPE (rel->r_info),
928 h == NULL);
929 switch (r_type)
a85d7ed0
NC		 930 {
931 case R_390_GOT12:
947216bf 932 case R_390_GOT16:
bd1ea41b 933 case R_390_GOT20:
a85d7ed0
NC		 934 case R_390_GOT32:
935 case R_390_GOT64:
936 case R_390_GOTENT:
5236c819
MS		 937 case R_390_GOTPLT12:
938 case R_390_GOTPLT16:
bd1ea41b 939 case R_390_GOTPLT20:
5236c819
MS		 940 case R_390_GOTPLT32:
941 case R_390_GOTPLT64:
942 case R_390_GOTPLTENT:
69fc87f1
MS		 943 case R_390_TLS_GD64:
944 case R_390_TLS_GOTIE12:
bd1ea41b 945 case R_390_TLS_GOTIE20:
69fc87f1
MS		 946 case R_390_TLS_GOTIE64:
947 case R_390_TLS_IEENT:
948 case R_390_TLS_IE64:
949 case R_390_TLS_LDM64:
5236c819
MS		 950 if (h == NULL
951 && local_got_refcounts == NULL)
a85d7ed0 952 {
470b557a 953 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 954 return FALSE;
470b557a 955 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 956 }
470b557a 957
5236c819
MS		 958 /* Fall through. */
959 case R_390_GOTOFF16:
960 case R_390_GOTOFF32:
961 case R_390_GOTOFF64:
0451c93c
MS		 962 case R_390_GOTPC:
963 case R_390_GOTPCDBL:
f41345a7 964 if (htab->elf.sgot == NULL)
0451c93c
MS		 965 {
966 if (htab->elf.dynobj == NULL)
967 htab->elf.dynobj = abfd;
ce558b89 968 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
b34976b6 969 return FALSE;
0451c93c 970 }
5236c819
MS		 971 }
972
470b557a
AK		 973 if (h != NULL)
974 {
975 if (htab->elf.dynobj == NULL)
976 htab->elf.dynobj = abfd;
977 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
978 return FALSE;
979
980 /* Make sure an IFUNC symbol defined in a non-shared object
981 always gets a PLT slot. */
982 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
983 {
984 /* The symbol is called by the dynamic loader in order
985 to resolve the relocation. So it is in fact also
986 referenced. */
987 h->ref_regular = 1;
988 h->needs_plt = 1;
989 }
990 }
991
69fc87f1 992 switch (r_type)
5236c819 993 {
5236c819
MS		 994 case R_390_GOTPC:
995 case R_390_GOTPCDBL:
470b557a
AK		 996 /* These relocs do not need a GOT slot. They just load the
997 GOT pointer itself or address something else relative to
998 the GOT. Since the GOT pointer has been set up above we
999 are done. */
0451c93c 1000 break;
d47b13e0
AK		 1001 case R_390_GOTOFF16:
1002 case R_390_GOTOFF32:
1003 case R_390_GOTOFF64:
1004 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
1005 break;
1a0670f3 1006 /* Fall through. */
ec338859 1007
fb798c50 1008 case R_390_PLT12DBL:
947216bf 1009 case R_390_PLT16DBL:
fb798c50 1010 case R_390_PLT24DBL:
a85d7ed0
NC		 1011 case R_390_PLT32:
1012 case R_390_PLT32DBL:
1013 case R_390_PLT64:
5236c819
MS		 1014 case R_390_PLTOFF16:
1015 case R_390_PLTOFF32:
1016 case R_390_PLTOFF64:
a85d7ed0 1017 /* This symbol requires a procedure linkage table entry. We
947216bf
AM		 1018 actually build the entry in adjust_dynamic_symbol,
1019 because this might be a case of linking PIC code which is
1020 never referenced by a dynamic object, in which case we
1021 don't need to generate a procedure linkage table entry
1022 after all. */
ec338859 1023
a85d7ed0 1024 /* If this is a local symbol, we resolve it directly without
947216bf 1025 creating a procedure linkage table entry. */
5236c819
MS		 1026 if (h != NULL)
1027 {
f5385ebf 1028 h->needs_plt = 1;
5236c819
MS		 1029 h->plt.refcount += 1;
1030 }
1031 break;
ec338859 1032
5236c819
MS		 1033 case R_390_GOTPLT12:
1034 case R_390_GOTPLT16:
bd1ea41b 1035 case R_390_GOTPLT20:
5236c819
MS		 1036 case R_390_GOTPLT32:
1037 case R_390_GOTPLT64:
1038 case R_390_GOTPLTENT:
1039 /* This symbol requires either a procedure linkage table entry
1040 or an entry in the local got. We actually build the entry
1041 in adjust_dynamic_symbol because whether this is really a
1042 global reference can change and with it the fact if we have
1043 to create a plt entry or a local got entry. To be able to
1044 make a once global symbol a local one we have to keep track
1045 of the number of gotplt references that exist for this
1046 symbol. */
1047 if (h != NULL)
1048 {
1049 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1050 h->needs_plt = 1;
5236c819
MS		 1051 h->plt.refcount += 1;
1052 }
69fc87f1
MS		 1053 else
1054 local_got_refcounts[r_symndx] += 1;
1055 break;
1056
1057 case R_390_TLS_LDM64:
1058 htab->tls_ldm_got.refcount += 1;
1059 break;
1060
1061 case R_390_TLS_IE64:
1062 case R_390_TLS_GOTIE12:
bd1ea41b 1063 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1064 case R_390_TLS_GOTIE64:
1065 case R_390_TLS_IEENT:
0e1862bb 1066 if (bfd_link_pic (info))
69fc87f1
MS		 1067 info->flags |= DF_STATIC_TLS;
1068 /* Fall through */
1069
1070 case R_390_GOT12:
26e41594 1071 case R_390_GOT16:
bd1ea41b 1072 case R_390_GOT20:
69fc87f1
MS		 1073 case R_390_GOT32:
1074 case R_390_GOT64:
1075 case R_390_GOTENT:
1076 case R_390_TLS_GD64:
1077 /* This symbol requires a global offset table entry. */
1078 switch (r_type)
1079 {
1080 default:
1081 case R_390_GOT12:
1082 case R_390_GOT16:
bd1ea41b 1083 case R_390_GOT20:
69fc87f1
MS		 1084 case R_390_GOT32:
1085 case R_390_GOTENT:
1086 tls_type = GOT_NORMAL;
1087 break;
1088 case R_390_TLS_GD64:
1089 tls_type = GOT_TLS_GD;
1090 break;
1091 case R_390_TLS_IE64:
1092 case R_390_TLS_GOTIE64:
1093 tls_type = GOT_TLS_IE;
1094 break;
1095 case R_390_TLS_GOTIE12:
bd1ea41b 1096 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1097 case R_390_TLS_IEENT:
1098 tls_type = GOT_TLS_IE_NLT;
1099 break;
1100 }
1101
1102 if (h != NULL)
1103 {
1104 h->got.refcount += 1;
1105 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1106 }
5236c819
MS		 1107 else
1108 {
1109 local_got_refcounts[r_symndx] += 1;
69fc87f1 1110 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
5236c819 1111 }
69fc87f1
MS		 1112 /* If a TLS symbol is accessed using IE at least once,
1113 there is no point to use dynamic model for it. */
1114 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1115 {
1116 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1117 {
4eca0228 1118 _bfd_error_handler
695344c0 1119 /* xgettext:c-format */
871b3ab2 1120 (_("%pB: `%s' accessed both as normal and thread local symbol"),
d003868e 1121 abfd, h->root.root.string);
69fc87f1
MS		 1122 return FALSE;
1123 }
1124 if (old_tls_type > tls_type)
1125 tls_type = old_tls_type;
1126 }
1127
1128 if (old_tls_type != tls_type)
1129 {
1130 if (h != NULL)
1131 elf_s390_hash_entry (h)->tls_type = tls_type;
1132 else
1133 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1134 }
1135
1136 if (r_type != R_390_TLS_IE64)
1137 break;
1138 /* Fall through */
1139
1140 case R_390_TLS_LE64:
e00d879a
AK		 1141 /* For static linking and executables this reloc will be
1142 calculated at linktime otherwise a TLS_TPOFF runtime
1143 reloc will be generated. */
0e1862bb 1144 if (r_type == R_390_TLS_LE64 && bfd_link_pie (info))
e00d879a
AK		 1145 break;
1146
0e1862bb 1147 if (!bfd_link_pic (info))
69fc87f1
MS		 1148 break;
1149 info->flags |= DF_STATIC_TLS;
1150 /* Fall through */
ec338859 1151
947216bf
AM		 1152 case R_390_8:
1153 case R_390_16:
a85d7ed0
NC		 1154 case R_390_32:
1155 case R_390_64:
fb798c50 1156 case R_390_PC12DBL:
947216bf
AM		 1157 case R_390_PC16:
1158 case R_390_PC16DBL:
fb798c50 1159 case R_390_PC24DBL:
a85d7ed0
NC		 1160 case R_390_PC32:
1161 case R_390_PC32DBL:
1162 case R_390_PC64:
99ba5125 1163 if (h != NULL && bfd_link_executable (info))
0451c93c
MS		 1164 {
1165 /* If this reloc is in a read-only section, we might
1166 need a copy reloc. We can't check reliably at this
1167 stage whether the section is read-only, as input
1168 sections have not yet been mapped to output sections.
1169 Tentatively set the flag for now, and correct in
1170 adjust_dynamic_symbol. */
f5385ebf 1171 h->non_got_ref = 1;
ec338859 1172
0e1862bb 1173 if (!bfd_link_pic (info))
470b557a
AK		 1174 {
1175 /* We may need a .plt entry if the function this reloc
1176 refers to is in a shared lib. */
1177 h->plt.refcount += 1;
1178 }
0451c93c 1179 }
ec338859 1180
a85d7ed0 1181 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1182 against a global symbol, or a non PC relative reloc
1183 against a local symbol, then we need to copy the reloc
1184 into the shared library. However, if we are linking with
1185 -Bsymbolic, we do not need to copy a reloc against a
1186 global symbol which is defined in an object we are
1187 including in the link (i.e., DEF_REGULAR is set). At
1188 this point we have not seen all the input files, so it is
1189 possible that DEF_REGULAR is not set now but will be set
1190 later (it is never cleared). In case of a weak definition,
1191 DEF_REGULAR may be cleared later by a strong definition in
1192 a shared library. We account for that possibility below by
1193 storing information in the relocs_copied field of the hash
1194 table entry. A similar situation occurs when creating
1195 shared libraries and symbol visibility changes render the
1196 symbol local.
1197
1198 If on the other hand, we are creating an executable, we
1199 may need to keep relocations for symbols satisfied by a
1200 dynamic library if we manage to avoid copy relocs for the
1201 symbol. */
0e1862bb 1202 if ((bfd_link_pic (info)
0451c93c
MS		 1203 && (sec->flags & SEC_ALLOC) != 0
1204 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1205 && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1206 && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1207 && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL
0451c93c
MS		 1208 && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1209 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1210 && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1211 || (h != NULL
8c21ca21 1212 && (! SYMBOLIC_BIND (info, h)
0451c93c 1213 || h->root.type == bfd_link_hash_defweak
f5385ebf 1214 || !h->def_regular))))
64285810 1215 || (ELIMINATE_COPY_RELOCS
0e1862bb 1216 && !bfd_link_pic (info)
0451c93c
MS		 1217 && (sec->flags & SEC_ALLOC) != 0
1218 && h != NULL
1219 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1220 || !h->def_regular)))
a85d7ed0 1221 {
00d8c7a9
AK		 1222 struct elf_dyn_relocs *p;
1223 struct elf_dyn_relocs **head;
ec338859 1224
0451c93c
MS		 1225 /* We must copy these reloc types into the output file.
1226 Create a reloc section in dynobj and make room for
1227 this reloc. */
a85d7ed0
NC		 1228 if (sreloc == NULL)
1229 {
440e9cd2
AK		 1230 if (htab->elf.dynobj == NULL)
1231 htab->elf.dynobj = abfd;
1232
83bac4b0
NC		 1233 sreloc = _bfd_elf_make_dynamic_reloc_section
1234 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
ec338859 1235
a85d7ed0 1236 if (sreloc == NULL)
83bac4b0 1237 return FALSE;
a85d7ed0 1238 }
ec338859 1239
0451c93c
MS		 1240 /* If this is a global symbol, we count the number of
1241 relocations we need for this symbol. */
1242 if (h != NULL)
a85d7ed0 1243 {
ec338859 1244 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS		 1245 }
1246 else
1247 {
ec338859
AM		 1248 /* Track dynamic relocs needed for local syms too.
1249 We really need local syms available to do this
1250 easily. Oh well. */
ec338859 1251 asection *s;
6edfbbad
DJ		 1252 void *vpp;
1253
87d72d41
AM		 1254 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1255 abfd, r_symndx);
1256 if (isym == NULL)
b34976b6 1257 return FALSE;
ec338859 1258
87d72d41
AM		 1259 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1260 if (s == NULL)
1261 s = sec;
1262
6edfbbad 1263 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1264 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1265 }
1266
1267 p = *head;
1268 if (p == NULL || p->sec != sec)
1269 {
1270 bfd_size_type amt = sizeof *p;
00d8c7a9 1271 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1272 bfd_alloc (htab->elf.dynobj, amt));
1273 if (p == NULL)
b34976b6 1274 return FALSE;
ec338859
AM		 1275 p->next = *head;
1276 *head = p;
1277 p->sec = sec;
1278 p->count = 0;
1279 p->pc_count = 0;
a85d7ed0 1280 }
ec338859
AM		 1281
1282 p->count += 1;
1283 if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
fb798c50
AK		 1284 || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL
1285 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
ec338859
AM		 1286 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1287 || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1288 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1289 || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1290 p->pc_count += 1;
a85d7ed0 1291 }
a85d7ed0 1292 break;
ec338859 1293
a85d7ed0
NC		 1294 /* This relocation describes the C++ object vtable hierarchy.
1295 Reconstruct it for later use during GC. */
947216bf 1296 case R_390_GNU_VTINHERIT:
c152c796 1297 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 1298 return FALSE;
947216bf 1299 break;
ec338859 1300
a85d7ed0
NC		 1301 /* This relocation describes which C++ vtable entries are actually
1302 used. Record for later use during GC. */
947216bf 1303 case R_390_GNU_VTENTRY:
a0ea3a14 1304 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 1305 return FALSE;
947216bf 1306 break;
ec338859 1307
a85d7ed0
NC		 1308 default:
1309 break;
1310 }
1311 }
1312
b34976b6 1313 return TRUE;
a85d7ed0
NC		 1314}
1315
1316/* Return the section that should be marked against GC for a given
1317 relocation. */
1318
1319static asection *
07adf181
AM		 1320elf_s390_gc_mark_hook (asection *sec,
1321 struct bfd_link_info *info,
1322 Elf_Internal_Rela *rel,
1323 struct elf_link_hash_entry *h,
1324 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1325{
1326 if (h != NULL)
07adf181
AM		 1327 switch (ELF64_R_TYPE (rel->r_info))
1328 {
1329 case R_390_GNU_VTINHERIT:
1330 case R_390_GNU_VTENTRY:
1331 return NULL;
1332 }
1333
1334 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0
NC		 1335}
1336
5236c819
MS		 1337/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1338 entry but we found we will not create any. Called when we find we will
1339 not have any PLT for this symbol, by for example
1340 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1341 or elf_s390_size_dynamic_sections if no dynamic sections will be
1342 created (we're only linking static objects). */
1343
1344static void
2c3fc389 1345elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1346{
1347 if (h->elf.root.type == bfd_link_hash_warning)
1348 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1349
1350 if (h->gotplt_refcount <= 0)
1351 return;
1352
1353 /* We simply add the number of gotplt references to the number
1354 * of got references for this symbol. */
1355 h->elf.got.refcount += h->gotplt_refcount;
1356 h->gotplt_refcount = -1;
1357}
1358
63c1f59d
AM		 1359/* Find dynamic relocs for H that apply to read-only sections. */
1360
1361static asection *
1362readonly_dynrelocs (struct elf_link_hash_entry *h)
1363{
1364 struct elf_dyn_relocs *p;
1365
1366 for (p = elf_s390_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
1367 {
1368 asection *s = p->sec->output_section;
1369
1370 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1371 return p->sec;
1372 }
1373 return NULL;
1374}
1375
a85d7ed0
NC		 1376/* Adjust a symbol defined by a dynamic object and referenced by a
1377 regular object. The current definition is in some section of the
1378 dynamic object, but we're not including those sections. We have to
1379 change the definition to something the rest of the link can
1380 understand. */
1381
b34976b6 1382static bfd_boolean
4dfe6ac6
NC		 1383elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1384 struct elf_link_hash_entry *h)
a85d7ed0 1385{
0451c93c 1386 struct elf_s390_link_hash_table *htab;
5474d94f 1387 asection *s, *srel;
a85d7ed0 1388
470b557a
AK		 1389 /* STT_GNU_IFUNC symbol must go through PLT. */
1390 if (s390_is_ifunc_symbol_p (h))
d8ee9e44
AK		 1391 {
1392 /* All local STT_GNU_IFUNC references must be treated as local
1393 calls via local PLT. */
1394 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1395 {
1396 bfd_size_type pc_count = 0, count = 0;
1397 struct elf_dyn_relocs **pp;
1398 struct elf_s390_link_hash_entry *eh;
1399 struct elf_dyn_relocs *p;
1400
1401 eh = (struct elf_s390_link_hash_entry *) h;
1402 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1403 {
1404 pc_count += p->pc_count;
1405 p->count -= p->pc_count;
1406 p->pc_count = 0;
1407 count += p->count;
1408 if (p->count == 0)
1409 *pp = p->next;
1410 else
1411 pp = &p->next;
1412 }
1413
1414 if (pc_count || count)
1415 {
1416 h->needs_plt = 1;
1417 h->non_got_ref = 1;
1418 if (h->plt.refcount <= 0)
1419 h->plt.refcount = 1;
1420 else
1421 h->plt.refcount += 1;
1422 }
1423 }
1424
1425 if (h->plt.refcount <= 0)
1426 {
1427 h->plt.offset = (bfd_vma) -1;
1428 h->needs_plt = 0;
1429 }
1430 return TRUE;
1431 }
470b557a 1432
a85d7ed0
NC		 1433 /* If this is a function, put it in the procedure linkage table. We
1434 will fill in the contents of the procedure linkage table later
cedb70c5 1435 (although we could actually do it here). */
a85d7ed0 1436 if (h->type == STT_FUNC
f5385ebf 1437 || h->needs_plt)
a85d7ed0 1438 {
0451c93c 1439 if (h->plt.refcount <= 0
8c21ca21 1440 || SYMBOL_CALLS_LOCAL (info, h)
10e7c045 1441 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a85d7ed0
NC		 1442 {
1443 /* This case can occur if we saw a PLT32 reloc in an input
947216bf
AM		 1444 file, but the symbol was never referred to by a dynamic
1445 object, or if all references were garbage collected. In
0451c93c
MS		 1446 such a case, we don't actually need to build a procedure
1447 linkage table, and we can just do a PC32 reloc instead. */
a85d7ed0 1448 h->plt.offset = (bfd_vma) -1;
f5385ebf 1449 h->needs_plt = 0;
5236c819 1450 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1451 }
1452
b34976b6 1453 return TRUE;
a85d7ed0 1454 }
bbd7ec4a 1455 else
0451c93c
MS		 1456 /* It's possible that we incorrectly decided a .plt reloc was
1457 needed for an R_390_PC32 reloc to a non-function sym in
1458 check_relocs. We can't decide accurately between function and
1459 non-function syms in check-relocs; Objects loaded later in
1460 the link may change h->type. So fix it now. */
bbd7ec4a 1461 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1462
1463 /* If this is a weak symbol, and there is a real definition, the
1464 processor independent code will have arranged for us to see the
1465 real definition first, and we can just use the same value. */
60d67dc8 1466 if (h->is_weakalias)
a85d7ed0 1467 {
60d67dc8
AM		 1468 struct elf_link_hash_entry *def = weakdef (h);
1469 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1470 h->root.u.def.section = def->root.u.def.section;
1471 h->root.u.def.value = def->root.u.def.value;
64285810 1472 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
60d67dc8 1473 h->non_got_ref = def->non_got_ref;
b34976b6 1474 return TRUE;
a85d7ed0
NC		 1475 }
1476
1477 /* This is a reference to a symbol defined by a dynamic object which
1478 is not a function. */
1479
1480 /* If we are creating a shared library, we must presume that the
1481 only references to the symbol are via the global offset table.
1482 For such cases we need not do anything here; the relocations will
1483 be handled correctly by relocate_section. */
0e1862bb 1484 if (bfd_link_pic (info))
b34976b6 1485 return TRUE;
a85d7ed0
NC		 1486
1487 /* If there are no references to this symbol that do not use the
1488 GOT, we don't need to generate a copy reloc. */
f5385ebf 1489 if (!h->non_got_ref)
b34976b6 1490 return TRUE;
a85d7ed0 1491
0451c93c
MS		 1492 /* If -z nocopyreloc was given, we won't generate them either. */
1493 if (info->nocopyreloc)
1494 {
f5385ebf 1495 h->non_got_ref = 0;
b34976b6 1496 return TRUE;
0451c93c
MS		 1497 }
1498
3bf083ed
AM		 1499 /* If we don't find any dynamic relocs in read-only sections, then
1500 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1501 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
0451c93c 1502 {
3bf083ed
AM		 1503 h->non_got_ref = 0;
1504 return TRUE;
0451c93c
MS		 1505 }
1506
a85d7ed0
NC		 1507 /* We must allocate the symbol in our .dynbss section, which will
1508 become part of the .bss section of the executable. There will be
1509 an entry for this symbol in the .dynsym section. The dynamic
1510 object will contain position independent code, so all references
1511 from the dynamic object to this symbol will go through the global
1512 offset table. The dynamic linker will use the .dynsym entry to
1513 determine the address it must put in the global offset table, so
1514 both the dynamic object and the regular object will refer to the
1515 same memory location for the variable. */
1516
0451c93c 1517 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1518 if (htab == NULL)
1519 return FALSE;
a85d7ed0 1520
0451c93c
MS		 1521 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1522 copy the initial value out of the dynamic object and into the
1523 runtime process image. */
5474d94f
AM		 1524 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1525 {
1526 s = htab->elf.sdynrelro;
1527 srel = htab->elf.sreldynrelro;
1528 }
1529 else
1530 {
1531 s = htab->elf.sdynbss;
1532 srel = htab->elf.srelbss;
1533 }
1d7e9d18 1534 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1535 {
5474d94f 1536 srel->size += sizeof (Elf64_External_Rela);
f5385ebf 1537 h->needs_copy = 1;
a85d7ed0
NC		 1538 }
1539
6cabe1ea 1540 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a85d7ed0
NC		 1541}
1542
0451c93c
MS		 1543/* Allocate space in .plt, .got and associated reloc sections for
1544 dynamic relocs. */
1545
b34976b6 1546static bfd_boolean
4dfe6ac6
NC		 1547allocate_dynrelocs (struct elf_link_hash_entry *h,
1548 void * inf)
0451c93c
MS		 1549{
1550 struct bfd_link_info *info;
1551 struct elf_s390_link_hash_table *htab;
470b557a 1552 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1553 struct elf_dyn_relocs *p;
0451c93c 1554
e92d460e 1555 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1556 return TRUE;
0451c93c
MS		 1557
1558 info = (struct bfd_link_info *) inf;
1559 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1560 if (htab == NULL)
1561 return FALSE;
0451c93c 1562
470b557a
AK		 1563 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1564 here if it is defined and referenced in a non-shared object. */
1565 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
61643fba 1566 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
470b557a
AK		 1567 else if (htab->elf.dynamic_sections_created
1568 && h->plt.refcount > 0)
0451c93c
MS		 1569 {
1570 /* Make sure this symbol is output as a dynamic symbol.
1571 Undefined weak syms won't yet be marked as dynamic. */
1572 if (h->dynindx == -1
f5385ebf 1573 && !h->forced_local)
0451c93c 1574 {
c152c796 1575 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1576 return FALSE;
0451c93c
MS		 1577 }
1578
0e1862bb 1579 if (bfd_link_pic (info)
4ec72bde 1580 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1581 {
f41345a7 1582 asection *s = htab->elf.splt;
0451c93c
MS		 1583
1584 /* If this is the first .plt entry, make room for the special
1585 first entry. */
eea6121a
AM		 1586 if (s->size == 0)
1587 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1588
eea6121a 1589 h->plt.offset = s->size;
0451c93c
MS		 1590
1591 /* If this symbol is not defined in a regular file, and we are
1592 not generating a shared library, then set the symbol to this
1593 location in the .plt. This is required to make function
1594 pointers compare as equal between the normal executable and
1595 the shared library. */
0e1862bb 1596 if (! bfd_link_pic (info)
f5385ebf 1597 && !h->def_regular)
0451c93c
MS		 1598 {
1599 h->root.u.def.section = s;
1600 h->root.u.def.value = h->plt.offset;
1601 }
ec338859 1602
0451c93c 1603 /* Make room for this entry. */
eea6121a 1604 s->size += PLT_ENTRY_SIZE;
ec338859 1605
afca762f 1606 /* We also need to make an entry in the .got.plt section. */
f41345a7 1607 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1608
1609 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1610 htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 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 }
1619 else
1620 {
1621 h->plt.offset = (bfd_vma) -1;
f5385ebf 1622 h->needs_plt = 0;
5236c819 1623 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1624 }
1625
69fc87f1
MS		 1626 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1627 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1628 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1629 we can save the dynamic TLS relocation. */
1630 if (h->got.refcount > 0
0e1862bb 1631 && !bfd_link_pic (info)
69fc87f1
MS		 1632 && h->dynindx == -1
1633 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1634 {
1635 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1636 /* For the GOTIE access without a literal pool entry the offset has
1637 to be stored somewhere. The immediate value in the instruction
1638 is not bit enough so the value is stored in the got. */
1639 {
f41345a7
AK		 1640 h->got.offset = htab->elf.sgot->size;
1641 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1642 }
1643 else
1644 h->got.offset = (bfd_vma) -1;
1645 }
1646 else if (h->got.refcount > 0)
0451c93c
MS		 1647 {
1648 asection *s;
b34976b6 1649 bfd_boolean dyn;
69fc87f1 1650 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1651
1652 /* Make sure this symbol is output as a dynamic symbol.
1653 Undefined weak syms won't yet be marked as dynamic. */
1654 if (h->dynindx == -1
f5385ebf 1655 && !h->forced_local)
0451c93c 1656 {
c152c796 1657 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1658 return FALSE;
0451c93c
MS		 1659 }
1660
f41345a7 1661 s = htab->elf.sgot;
eea6121a
AM		 1662 h->got.offset = s->size;
1663 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1664 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1665 if (tls_type == GOT_TLS_GD)
eea6121a 1666 s->size += GOT_ENTRY_SIZE;
0451c93c 1667 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1668 /* R_390_TLS_IE64 needs one dynamic relocation,
1669 R_390_TLS_GD64 needs one if local symbol and two if global. */
1670 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1671 || tls_type >= GOT_TLS_IE)
f41345a7 1672 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1 1673 else if (tls_type == GOT_TLS_GD)
f41345a7 1674 htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
10e7c045 1675 else if (!UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
0e1862bb 1676 && (bfd_link_pic (info)
82058a73 1677 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1678 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1679 }
1680 else
1681 h->got.offset = (bfd_vma) -1;
1682
0451c93c 1683 if (eh->dyn_relocs == NULL)
b34976b6 1684 return TRUE;
0451c93c
MS		 1685
1686 /* In the shared -Bsymbolic case, discard space allocated for
1687 dynamic pc-relative relocs against symbols which turn out to be
1688 defined in regular objects. For the normal shared case, discard
1689 space for pc-relative relocs that have become local due to symbol
1690 visibility changes. */
1691
0e1862bb 1692 if (bfd_link_pic (info))
0451c93c 1693 {
8c21ca21 1694 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1695 {
00d8c7a9 1696 struct elf_dyn_relocs **pp;
0451c93c
MS		 1697
1698 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1699 {
1700 p->count -= p->pc_count;
1701 p->pc_count = 0;
1702 if (p->count == 0)
1703 *pp = p->next;
1704 else
1705 pp = &p->next;
1706 }
1707 }
82058a73
MS		 1708
1709 /* Also discard relocs on undefined weak syms with non-default
1710 visibility. */
22d606e9 1711 if (eh->dyn_relocs != NULL
82058a73 1712 && h->root.type == bfd_link_hash_undefweak)
22d606e9 1713 {
b27bb18f
L		 1714 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1715 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
22d606e9
AM		 1716 eh->dyn_relocs = NULL;
1717
1718 /* Make sure undefined weak symbols are output as a dynamic
1719 symbol in PIEs. */
1720 else if (h->dynindx == -1
1721 && !h->forced_local)
1722 {
1723 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1724 return FALSE;
1725 }
1726 }
0451c93c 1727 }
64285810 1728 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1729 {
1730 /* For the non-shared case, discard space for relocs against
1731 symbols which turn out to need copy relocs or are not
1732 dynamic. */
1733
f5385ebf
AM		 1734 if (!h->non_got_ref
1735 && ((h->def_dynamic
1736 && !h->def_regular)
0451c93c
MS		 1737 || (htab->elf.dynamic_sections_created
1738 && (h->root.type == bfd_link_hash_undefweak
1739 || h->root.type == bfd_link_hash_undefined))))
1740 {
1741 /* Make sure this symbol is output as a dynamic symbol.
1742 Undefined weak syms won't yet be marked as dynamic. */
1743 if (h->dynindx == -1
f5385ebf 1744 && !h->forced_local)
0451c93c 1745 {
c152c796 1746 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1747 return FALSE;
0451c93c
MS		 1748 }
1749
1750 /* If that succeeded, we know we'll be keeping all the
1751 relocs. */
1752 if (h->dynindx != -1)
1753 goto keep;
1754 }
1755
1756 eh->dyn_relocs = NULL;
1757
ec338859 1758 keep: ;
0451c93c
MS		 1759 }
1760
1761 /* Finally, allocate space. */
1762 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1763 {
1764 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1765 sreloc->size += p->count * sizeof (Elf64_External_Rela);
0451c93c
MS		 1766 }
1767
b34976b6 1768 return TRUE;
0451c93c
MS		 1769}
1770
63c1f59d
AM		 1771/* Set DF_TEXTREL if we find any dynamic relocs that apply to
1772 read-only sections. */
0451c93c 1773
b34976b6 1774static bfd_boolean
63c1f59d 1775maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
0451c93c 1776{
63c1f59d 1777 asection *sec;
0451c93c 1778
63c1f59d
AM		 1779 if (h->root.type == bfd_link_hash_indirect)
1780 return TRUE;
0451c93c 1781
63c1f59d
AM		 1782 sec = readonly_dynrelocs (h);
1783 if (sec != NULL)
1784 {
1785 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
0451c93c 1786
63c1f59d
AM		 1787 info->flags |= DF_TEXTREL;
1788 info->callbacks->minfo
c1c8c1ef 1789 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
63c1f59d 1790 sec->owner, h->root.root.string, sec);
0451c93c 1791
63c1f59d
AM		 1792 /* Not an error, just cut short the traversal. */
1793 return FALSE;
0451c93c 1794 }
b34976b6 1795 return TRUE;
0451c93c
MS		 1796}
1797
a85d7ed0
NC		 1798/* Set the sizes of the dynamic sections. */
1799
b34976b6 1800static bfd_boolean
4dfe6ac6
NC		 1801elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1802 struct bfd_link_info *info)
a85d7ed0 1803{
0451c93c 1804 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1805 bfd *dynobj;
1806 asection *s;
b34976b6 1807 bfd_boolean relocs;
0451c93c 1808 bfd *ibfd;
a85d7ed0 1809
0451c93c 1810 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1811 if (htab == NULL)
1812 return FALSE;
1813
0451c93c
MS		 1814 dynobj = htab->elf.dynobj;
1815 if (dynobj == NULL)
1816 abort ();
a85d7ed0 1817
0451c93c 1818 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1819 {
1820 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 1821 if (bfd_link_executable (info) && !info->nointerp)
a85d7ed0 1822 {
3d4d4302 1823 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 1824 if (s == NULL)
1825 abort ();
eea6121a 1826 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 1827 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1828 }
1829 }
a85d7ed0 1830
afca762f
AK		 1831 if (htab->elf.sgot && s390_gotplt_after_got_p (info))
1832 {
1833 /* _bfd_elf_create_got_section adds the got header size always
1834 to .got.plt but we need it in .got if this section comes
1835 first. */
1836 htab->elf.sgot->size += 3 * GOT_ENTRY_SIZE;
1837 htab->elf.sgotplt->size -= 3 * GOT_ENTRY_SIZE;
1838
1839 /* Make the _GLOBAL_OFFSET_TABLE_ symbol point to the .got
1840 instead of .got.plt. */
1841 htab->elf.hgot->root.u.def.section = htab->elf.sgot;
1842 htab->elf.hgot->root.u.def.value = 0;
1843 }
1844
0451c93c
MS		 1845 /* Set up .got offsets for local syms, and space for local dynamic
1846 relocs. */
c72f2fb2 1847 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a85d7ed0 1848 {
0451c93c
MS		 1849 bfd_signed_vma *local_got;
1850 bfd_signed_vma *end_local_got;
69fc87f1 1851 char *local_tls_type;
0451c93c
MS		 1852 bfd_size_type locsymcount;
1853 Elf_Internal_Shdr *symtab_hdr;
1854 asection *srela;
470b557a
AK		 1855 struct plt_entry *local_plt;
1856 unsigned int i;
a85d7ed0 1857
0ffa91dd 1858 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 1859 continue;
1860
0451c93c 1861 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 1862 {
00d8c7a9 1863 struct elf_dyn_relocs *p;
0451c93c 1864
6edfbbad 1865 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 1866 {
ec338859
AM		 1867 if (!bfd_is_abs_section (p->sec)
1868 && bfd_is_abs_section (p->sec->output_section))
1869 {
1870 /* Input section has been discarded, either because
1871 it is a copy of a linkonce section or due to
1872 linker script /DISCARD/, so we'll be discarding
1873 the relocs too. */
1874 }
248866a8 1875 else if (p->count != 0)
ec338859
AM		 1876 {
1877 srela = elf_section_data (p->sec)->sreloc;
eea6121a 1878 srela->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 1879 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1880 info->flags |= DF_TEXTREL;
ec338859 1881 }
a85d7ed0
NC		 1882 }
1883 }
0451c93c
MS		 1884
1885 local_got = elf_local_got_refcounts (ibfd);
1886 if (!local_got)
1887 continue;
1888
0ffa91dd 1889 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 1890 locsymcount = symtab_hdr->sh_info;
1891 end_local_got = local_got + locsymcount;
69fc87f1 1892 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 1893 s = htab->elf.sgot;
1894 srela = htab->elf.srelgot;
69fc87f1 1895 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 1896 {
0451c93c 1897 if (*local_got > 0)
a85d7ed0 1898 {
eea6121a
AM		 1899 *local_got = s->size;
1900 s->size += GOT_ENTRY_SIZE;
69fc87f1 1901 if (*local_tls_type == GOT_TLS_GD)
eea6121a 1902 s->size += GOT_ENTRY_SIZE;
0e1862bb 1903 if (bfd_link_pic (info))
eea6121a 1904 srela->size += sizeof (Elf64_External_Rela);
a85d7ed0
NC		 1905 }
1906 else
0451c93c 1907 *local_got = (bfd_vma) -1;
a85d7ed0 1908 }
470b557a
AK		 1909
1910 local_plt = elf_s390_local_plt (ibfd);
1911 for (i = 0; i < symtab_hdr->sh_info; i++)
1912 {
1913 if (local_plt[i].plt.refcount > 0)
1914 {
1915 local_plt[i].plt.offset = htab->elf.iplt->size;
1916 htab->elf.iplt->size += PLT_ENTRY_SIZE;
1917 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
1918 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
1919 }
1920 else
1921 local_plt[i].plt.offset = (bfd_vma) -1;
1922 }
0451c93c
MS		 1923 }
1924
69fc87f1
MS		 1925 if (htab->tls_ldm_got.refcount > 0)
1926 {
1927 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
1928 relocs. */
f41345a7
AK		 1929 htab->tls_ldm_got.offset = htab->elf.sgot->size;
1930 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
1931 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1
MS		 1932 }
1933 else
1934 htab->tls_ldm_got.offset = -1;
1935
0451c93c
MS		 1936 /* Allocate global sym .plt and .got entries, and space for global
1937 sym dynamic relocs. */
2c3fc389 1938 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 1939
1940 /* We now have determined the sizes of the various dynamic sections.
1941 Allocate memory for them. */
b34976b6 1942 relocs = FALSE;
0451c93c
MS		 1943 for (s = dynobj->sections; s != NULL; s = s->next)
1944 {
1945 if ((s->flags & SEC_LINKER_CREATED) == 0)
1946 continue;
1947
f41345a7
AK		 1948 if (s == htab->elf.splt
1949 || s == htab->elf.sgot
1950 || s == htab->elf.sgotplt
9d19e4fd 1951 || s == htab->elf.sdynbss
5474d94f 1952 || s == htab->elf.sdynrelro
470b557a
AK		 1953 || s == htab->elf.iplt
1954 || s == htab->elf.igotplt
1955 || s == htab->irelifunc)
0451c93c
MS		 1956 {
1957 /* Strip this section if we don't need it; see the
1958 comment below. */
1959 }
fd361982 1960 else if (CONST_STRNEQ (bfd_section_name (s), ".rela"))
0451c93c 1961 {
f41345a7 1962 if (s->size != 0 && s != htab->elf.srelplt)
b34976b6 1963 relocs = TRUE;
ec338859 1964
0451c93c
MS		 1965 /* We use the reloc_count field as a counter if we need
1966 to copy relocs into the output file. */
1967 s->reloc_count = 0;
1968 }
1969 else
a85d7ed0
NC		 1970 {
1971 /* It's not one of our sections, so don't allocate space. */
1972 continue;
1973 }
1974
eea6121a 1975 if (s->size == 0)
a85d7ed0 1976 {
0451c93c
MS		 1977 /* If we don't need this section, strip it from the
1978 output file. This is to handle .rela.bss and
1979 .rela.plt. We must create it in
1980 create_dynamic_sections, because it must be created
1981 before the linker maps input sections to output
1982 sections. The linker does that before
1983 adjust_dynamic_symbol is called, and it is that
1984 function which decides whether anything needs to go
1985 into these sections. */
1986
8423293d 1987 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 1988 continue;
1989 }
1990
c456f082
AM		 1991 if ((s->flags & SEC_HAS_CONTENTS) == 0)
1992 continue;
1993
0451c93c
MS		 1994 /* Allocate memory for the section contents. We use bfd_zalloc
1995 here in case unused entries are not reclaimed before the
1996 section's contents are written out. This should not happen,
1997 but this way if it does, we get a R_390_NONE reloc instead
1998 of garbage. */
eea6121a 1999 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 2000 if (s->contents == NULL)
b34976b6 2001 return FALSE;
a85d7ed0
NC		 2002 }
2003
0451c93c 2004 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2005 {
2006 /* Add some entries to the .dynamic section. We fill in the
2007 values later, in elf_s390_finish_dynamic_sections, but we
2008 must add the entries now so that we get the correct size for
2009 the .dynamic section. The DT_DEBUG entry is filled in by the
2010 dynamic linker and used by the debugger. */
dc810e39 2011#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2012 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2013
0e1862bb 2014 if (bfd_link_executable (info))
a85d7ed0 2015 {
dc810e39 2016 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2017 return FALSE;
a85d7ed0
NC		 2018 }
2019
f41345a7 2020 if (htab->elf.splt->size != 0)
a85d7ed0 2021 {
dc810e39
AM		 2022 if (!add_dynamic_entry (DT_PLTGOT, 0)
2023 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2024 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2025 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2026 return FALSE;
a85d7ed0
NC		 2027 }
2028
2029 if (relocs)
947216bf
AM		 2030 {
2031 if (!add_dynamic_entry (DT_RELA, 0)
2032 || !add_dynamic_entry (DT_RELASZ, 0)
2033 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 2034 return FALSE;
ec338859 2035
0451c93c
MS		 2036 /* If any dynamic relocs apply to a read-only section,
2037 then we need a DT_TEXTREL entry. */
248866a8 2038 if ((info->flags & DF_TEXTREL) == 0)
63c1f59d 2039 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
ec338859 2040
0451c93c
MS		 2041 if ((info->flags & DF_TEXTREL) != 0)
2042 {
2043 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2044 return FALSE;
0451c93c 2045 }
a85d7ed0
NC		 2046 }
2047 }
dc810e39 2048#undef add_dynamic_entry
a85d7ed0 2049
b34976b6 2050 return TRUE;
a85d7ed0
NC		 2051}
2052
69fc87f1
MS		 2053/* Return the base VMA address which should be subtracted from real addresses
2054 when resolving @dtpoff relocation.
2055 This is PT_TLS segment p_vaddr. */
2056
2057static bfd_vma
2c3fc389 2058dtpoff_base (struct bfd_link_info *info)
69fc87f1 2059{
e1918d23
AM		 2060 /* If tls_sec is NULL, we should have signalled an error already. */
2061 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2062 return 0;
e1918d23 2063 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2064}
2065
2066/* Return the relocation value for @tpoff relocation
2067 if STT_TLS virtual address is ADDRESS. */
2068
2069static bfd_vma
2c3fc389 2070tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2071{
e1918d23 2072 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2073
e1918d23
AM		 2074 /* If tls_sec is NULL, we should have signalled an error already. */
2075 if (htab->tls_sec == NULL)
69fc87f1 2076 return 0;
e1918d23 2077 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2078}
2079
2080/* Complain if TLS instruction relocation is against an invalid
2081 instruction. */
2082
2083static void
2c3fc389
NC		 2084invalid_tls_insn (bfd *input_bfd,
2085 asection *input_section,
2086 Elf_Internal_Rela *rel)
69fc87f1
MS		 2087{
2088 reloc_howto_type *howto;
2089
2090 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
4eca0228 2091 _bfd_error_handler
695344c0 2092 /* xgettext:c-format */
2dcf00ce 2093 (_("%pB(%pA+%#" PRIx64 "): invalid instruction for TLS relocation %s"),
d003868e
AM		 2094 input_bfd,
2095 input_section,
2dcf00ce 2096 (uint64_t) rel->r_offset,
69fc87f1 2097 howto->name);
77df2968 2098 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2099}
2100
a85d7ed0
NC		 2101/* Relocate a 390 ELF section. */
2102
b34976b6 2103static bfd_boolean
4dfe6ac6
NC		 2104elf_s390_relocate_section (bfd *output_bfd,
2105 struct bfd_link_info *info,
2106 bfd *input_bfd,
2107 asection *input_section,
2108 bfd_byte *contents,
2109 Elf_Internal_Rela *relocs,
2110 Elf_Internal_Sym *local_syms,
2111 asection **local_sections)
a85d7ed0 2112{
0451c93c 2113 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2114 Elf_Internal_Shdr *symtab_hdr;
2115 struct elf_link_hash_entry **sym_hashes;
2116 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2117 Elf_Internal_Rela *rel;
2118 Elf_Internal_Rela *relend;
2119
7af5d5c4
AM		 2120 if (!is_s390_elf (input_bfd))
2121 {
2122 bfd_set_error (bfd_error_wrong_format);
2123 return FALSE;
2124 }
0ffa91dd 2125
0451c93c 2126 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 2127 if (htab == NULL)
2128 return FALSE;
2129
0ffa91dd 2130 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2131 sym_hashes = elf_sym_hashes (input_bfd);
2132 local_got_offsets = elf_local_got_offsets (input_bfd);
2133
a85d7ed0
NC		 2134 rel = relocs;
2135 relend = relocs + input_section->reloc_count;
2136 for (; rel < relend; rel++)
2137 {
5236c819 2138 unsigned int r_type;
a85d7ed0
NC		 2139 reloc_howto_type *howto;
2140 unsigned long r_symndx;
2141 struct elf_link_hash_entry *h;
2142 Elf_Internal_Sym *sym;
2143 asection *sec;
0451c93c 2144 bfd_vma off;
a85d7ed0 2145 bfd_vma relocation;
b34976b6 2146 bfd_boolean unresolved_reloc;
a85d7ed0 2147 bfd_reloc_status_type r;
69fc87f1 2148 int tls_type;
b27bb18f 2149 bfd_boolean resolved_to_zero;
a85d7ed0
NC		 2150
2151 r_type = ELF64_R_TYPE (rel->r_info);
0451c93c 2152 if (r_type == (int) R_390_GNU_VTINHERIT
947216bf
AM		 2153 || r_type == (int) R_390_GNU_VTENTRY)
2154 continue;
5236c819 2155 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2156 {
2157 bfd_set_error (bfd_error_bad_value);
b34976b6 2158 return FALSE;
a85d7ed0 2159 }
a85d7ed0 2160
b491616a 2161 howto = elf_howto_table + r_type;
a85d7ed0 2162 r_symndx = ELF64_R_SYM (rel->r_info);
5236c819 2163
a85d7ed0
NC		 2164 h = NULL;
2165 sym = NULL;
2166 sec = NULL;
b34976b6 2167 unresolved_reloc = FALSE;
a85d7ed0
NC		 2168 if (r_symndx < symtab_hdr->sh_info)
2169 {
2170 sym = local_syms + r_symndx;
2171 sec = local_sections[r_symndx];
470b557a
AK		 2172
2173 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2174 {
2175 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2176 if (local_plt == NULL)
2177 return FALSE;
2178
2179 /* Address of the PLT slot. */
2180 relocation = (htab->elf.iplt->output_section->vma
2181 + htab->elf.iplt->output_offset
2182 + local_plt[r_symndx].plt.offset);
2183
2184 switch (r_type)
2185 {
31db78f6
AK		 2186 case R_390_PLTOFF16:
2187 case R_390_PLTOFF32:
2188 case R_390_PLTOFF64:
afca762f 2189 relocation -= s390_got_pointer (info);
31db78f6 2190 break;
470b557a
AK		 2191 case R_390_GOTPLT12:
2192 case R_390_GOTPLT16:
2193 case R_390_GOTPLT20:
2194 case R_390_GOTPLT32:
2195 case R_390_GOTPLT64:
2196 case R_390_GOTPLTENT:
2197 case R_390_GOT12:
2198 case R_390_GOT16:
2199 case R_390_GOT20:
2200 case R_390_GOT32:
2201 case R_390_GOT64:
2202 case R_390_GOTENT:
2203 {
2204 /* Write the PLT slot address into the GOT slot. */
2205 bfd_put_64 (output_bfd, relocation,
2206 htab->elf.sgot->contents +
2207 local_got_offsets[r_symndx]);
2208 relocation = (local_got_offsets[r_symndx] +
afca762f 2209 s390_got_offset (info));
470b557a
AK		 2210
2211 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
afca762f 2212 relocation += s390_got_pointer (info);
470b557a
AK		 2213 break;
2214 }
2215 default:
2216 break;
2217 }
2218 /* The output section is needed later in
2219 finish_dynamic_section when creating the dynamic
2220 relocation. */
2221 local_plt[r_symndx].sec = sec;
2222 goto do_relocation;
2223 }
2224 else
2225 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2226 }
2227 else
2228 {
560e09e9 2229 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2230 bfd_boolean ignored ATTRIBUTE_UNUSED;
0451c93c 2231
b2a8e766
AM		 2232 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2233 r_symndx, symtab_hdr, sym_hashes,
2234 h, sec, relocation,
62d887d4 2235 unresolved_reloc, warned, ignored);
a85d7ed0
NC		 2236 }
2237
dbaa2011 2238 if (sec != NULL && discarded_section (sec))
e4067dbb 2239 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2240 rel, 1, relend, howto, 0, contents);
ab96bf03 2241
0e1862bb 2242 if (bfd_link_relocatable (info))
ab96bf03
AM		 2243 continue;
2244
b27bb18f
L		 2245 resolved_to_zero = (h != NULL
2246 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
2247
a85d7ed0
NC		 2248 switch (r_type)
2249 {
5236c819
MS		 2250 case R_390_GOTPLT12:
2251 case R_390_GOTPLT16:
bd1ea41b 2252 case R_390_GOTPLT20:
5236c819
MS		 2253 case R_390_GOTPLT32:
2254 case R_390_GOTPLT64:
2255 case R_390_GOTPLTENT:
2256 /* There are three cases for a GOTPLT relocation. 1) The
2257 relocation is against the jump slot entry of a plt that
2258 will get emitted to the output file. 2) The relocation
2259 is against the jump slot of a plt entry that has been
2260 removed. elf_s390_adjust_gotplt has created a GOT entry
2261 as replacement. 3) The relocation is against a local symbol.
2262 Cases 2) and 3) are the same as the GOT relocation code
2263 so we just have to test for case 1 and fall through for
2264 the other two. */
2265 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2266 {
2267 bfd_vma plt_index;
2268
470b557a
AK		 2269 if (s390_is_ifunc_symbol_p (h))
2270 {
afca762f
AK		 2271 /* Entry indices of .iplt and .igot.plt match
2272 1:1. No magic PLT first entry here. */
470b557a 2273 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
afca762f
AK		 2274 relocation = (plt_index * GOT_ENTRY_SIZE
2275 + s390_gotplt_offset (info)
2276 + htab->elf.igotplt->output_offset);
470b557a
AK		 2277 }
2278 else
2279 {
afca762f
AK		 2280 plt_index = ((h->plt.offset - PLT_FIRST_ENTRY_SIZE)
2281 / PLT_ENTRY_SIZE);
2282
2283 relocation = (plt_index * GOT_ENTRY_SIZE
2284 + s390_gotplt_offset (info));
470b557a 2285 }
afca762f
AK		 2286 if (r_type == R_390_GOTPLTENT)
2287 relocation += s390_got_pointer (info);
5236c819 2288 unresolved_reloc = FALSE;
5236c819
MS		 2289 break;
2290 }
2291 /* Fall through. */
2292
947216bf
AM		 2293 case R_390_GOT12:
2294 case R_390_GOT16:
bd1ea41b 2295 case R_390_GOT20:
947216bf
AM		 2296 case R_390_GOT32:
2297 case R_390_GOT64:
2298 case R_390_GOTENT:
2299 /* Relocation is to the entry for this symbol in the global
2300 offset table. */
afca762f 2301 if (htab->elf.sgot == NULL)
0451c93c 2302 abort ();
a85d7ed0 2303
947216bf
AM		 2304 if (h != NULL)
2305 {
b34976b6 2306 bfd_boolean dyn;
a85d7ed0 2307
947216bf 2308 off = h->got.offset;
0451c93c 2309 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2310
2311 if (s390_is_ifunc_symbol_p (h))
2312 {
2313 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2314 if (off == (bfd_vma)-1)
2315 {
2316 /* No explicit GOT usage so redirect to the
2317 got.iplt slot. */
afca762f
AK		 2318 relocation = (s390_gotplt_offset (info)
2319 + htab->elf.igotplt->output_offset
2320 + (h->plt.offset / PLT_ENTRY_SIZE
2321 * GOT_ENTRY_SIZE));
2322
2323 /* For @GOTENT the relocation is against the offset between
2324 the instruction and the symbols entry in the GOT and not
2325 between the start of the GOT and the symbols entry. We
2326 add the vma of the GOT to get the correct value. */
2327 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2328 relocation += s390_got_pointer (info);
2329
2330 break;
470b557a
AK		 2331 }
2332 else
2333 {
2334 /* Explicit GOT slots must contain the address
2335 of the PLT slot. This will be handled in
2336 finish_dynamic_symbol. */
2337 }
2338 }
0e1862bb
L		 2339 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2340 bfd_link_pic (info),
2341 h)
2342 || (bfd_link_pic (info)
470b557a 2343 && SYMBOL_REFERENCES_LOCAL (info, h))
10e7c045 2344 || resolved_to_zero)
947216bf 2345 {
e6213e09
AK		 2346 Elf_Internal_Sym *isym;
2347 asection *sym_sec;
2348
947216bf
AM		 2349 /* This is actually a static link, or it is a
2350 -Bsymbolic link and the symbol is defined
2351 locally, or the symbol was forced to be local
2352 because of a version file. We must initialize
2353 this entry in the global offset table. Since the
2354 offset must always be a multiple of 2, we use the
2355 least significant bit to record whether we have
2356 initialized it already.
2357
2358 When doing a dynamic link, we create a .rel.got
2359 relocation entry to initialize the value. This
2360 is done in the finish_dynamic_symbol routine. */
2361 if ((off & 1) != 0)
2362 off &= ~1;
2363 else
2364 {
a85d7ed0 2365 bfd_put_64 (output_bfd, relocation,
afca762f 2366 htab->elf.sgot->contents + off);
947216bf
AM		 2367 h->got.offset |= 1;
2368 }
a63cc5f7 2369
e6213e09
AK		 2370 /* When turning a GOT slot dereference into a direct
2371 reference using larl we have to make sure that
2372 the symbol is 1. properly aligned and 2. it is no
2373 ABS symbol or will become one. */
a63cc5f7 2374 if ((h->def_regular
0e1862bb 2375 && bfd_link_pic (info)
a63cc5f7
AK		 2376 && SYMBOL_REFERENCES_LOCAL (info, h))
2377 /* lgrl rx,sym@GOTENT -> larl rx, sym */
2378 && ((r_type == R_390_GOTENT
2379 && (bfd_get_16 (input_bfd,
2380 contents + rel->r_offset - 2)
2381 & 0xff0f) == 0xc408)
2382 /* lg rx, sym@GOT(r12) -> larl rx, sym */
2383 || (r_type == R_390_GOT20
2384 && (bfd_get_32 (input_bfd,
2385 contents + rel->r_offset - 2)
2386 & 0xff00f000) == 0xe300c000
2387 && bfd_get_8 (input_bfd,
e6213e09
AK		 2388 contents + rel->r_offset + 3) == 0x04))
2389 && (isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2390 input_bfd, r_symndx))
2391 && isym->st_shndx != SHN_ABS
2392 && h != htab->elf.hdynamic
2393 && h != htab->elf.hgot
2394 && h != htab->elf.hplt
2395 && !(isym->st_value & 1)
2396 && (sym_sec = bfd_section_from_elf_index (input_bfd,
2397 isym->st_shndx))
2398 && sym_sec->alignment_power)
a63cc5f7
AK		 2399 {
2400 unsigned short new_insn =
2401 (0xc000 | (bfd_get_8 (input_bfd,
2402 contents + rel->r_offset - 1) & 0xf0));
2403 bfd_put_16 (output_bfd, new_insn,
2404 contents + rel->r_offset - 2);
2405 r_type = R_390_PC32DBL;
2406 rel->r_addend = 2;
2407 howto = elf_howto_table + r_type;
2408 relocation = h->root.u.def.value
2409 + h->root.u.def.section->output_section->vma
2410 + h->root.u.def.section->output_offset;
2411 goto do_relocation;
2412 }
947216bf 2413 }
0451c93c 2414 else
b34976b6 2415 unresolved_reloc = FALSE;
947216bf
AM		 2416 }
2417 else
2418 {
0451c93c
MS		 2419 if (local_got_offsets == NULL)
2420 abort ();
a85d7ed0 2421
947216bf 2422 off = local_got_offsets[r_symndx];
a85d7ed0 2423
947216bf
AM		 2424 /* The offset must always be a multiple of 8. We use
2425 the least significant bit to record whether we have
2426 already generated the necessary reloc. */
2427 if ((off & 1) != 0)
2428 off &= ~1;
2429 else
2430 {
2431 bfd_put_64 (output_bfd, relocation,
f41345a7 2432 htab->elf.sgot->contents + off);
a85d7ed0 2433
0e1862bb 2434 if (bfd_link_pic (info))
947216bf
AM		 2435 {
2436 asection *s;
2437 Elf_Internal_Rela outrel;
2438 bfd_byte *loc;
a85d7ed0 2439
f41345a7 2440 s = htab->elf.srelgot;
947216bf 2441 if (s == NULL)
0451c93c 2442 abort ();
a85d7ed0 2443
f41345a7
AK		 2444 outrel.r_offset = (htab->elf.sgot->output_section->vma
2445 + htab->elf.sgot->output_offset
947216bf
AM		 2446 + off);
2447 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2448 outrel.r_addend = relocation;
947216bf
AM		 2449 loc = s->contents;
2450 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2451 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2452 }
a85d7ed0 2453
947216bf
AM		 2454 local_got_offsets[r_symndx] |= 1;
2455 }
2456 }
a85d7ed0 2457
0451c93c
MS		 2458 if (off >= (bfd_vma) -2)
2459 abort ();
2460
afca762f 2461 relocation = s390_got_offset (info) + off;
0451c93c 2462
ae9a127f
NC		 2463 /* For @GOTENT the relocation is against the offset between
2464 the instruction and the symbols entry in the GOT and not
2465 between the start of the GOT and the symbols entry. We
2466 add the vma of the GOT to get the correct value. */
5236c819
MS		 2467 if ( r_type == R_390_GOTENT
2468 || r_type == R_390_GOTPLTENT)
afca762f 2469 relocation += s390_got_pointer (info);
a85d7ed0 2470
947216bf 2471 break;
99c79b2e 2472
5236c819
MS		 2473 case R_390_GOTOFF16:
2474 case R_390_GOTOFF32:
2475 case R_390_GOTOFF64:
947216bf
AM		 2476 /* Relocation is relative to the start of the global offset
2477 table. */
a85d7ed0 2478
d47b13e0
AK		 2479 if (h != NULL
2480 && s390_is_ifunc_symbol_p (h)
2481 && h->def_regular
2482 && !bfd_link_executable (info))
2483 {
2484 relocation = (htab->elf.iplt->output_section->vma
2485 + htab->elf.iplt->output_offset
2486 + h->plt.offset
afca762f 2487 - s390_got_pointer (info));
d47b13e0
AK		 2488 goto do_relocation;
2489 }
2490
afca762f 2491 relocation -= s390_got_pointer (info);
947216bf 2492 break;
a85d7ed0 2493
947216bf 2494 case R_390_GOTPC:
a85d7ed0 2495 case R_390_GOTPCDBL:
947216bf 2496 /* Use global offset table as symbol value. */
afca762f 2497 relocation = s390_got_pointer (info);
b34976b6 2498 unresolved_reloc = FALSE;
947216bf 2499 break;
a85d7ed0 2500
fb798c50 2501 case R_390_PLT12DBL:
947216bf 2502 case R_390_PLT16DBL:
fb798c50 2503 case R_390_PLT24DBL:
947216bf
AM		 2504 case R_390_PLT32:
2505 case R_390_PLT32DBL:
2506 case R_390_PLT64:
2507 /* Relocation is to the entry for this symbol in the
2508 procedure linkage table. */
a85d7ed0 2509
947216bf
AM		 2510 /* Resolve a PLT32 reloc against a local symbol directly,
2511 without using the procedure linkage table. */
2512 if (h == NULL)
2513 break;
a85d7ed0 2514
947216bf 2515 if (h->plt.offset == (bfd_vma) -1
31db78f6 2516 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
947216bf
AM		 2517 {
2518 /* We didn't make a PLT entry for this symbol. This
2519 happens when statically linking PIC code, or when
2520 using -Bsymbolic. */
2521 break;
2522 }
470b557a
AK		 2523 if (s390_is_ifunc_symbol_p (h))
2524 relocation = (htab->elf.iplt->output_section->vma
2525 + htab->elf.iplt->output_offset
2526 + h->plt.offset);
2527 else
2528 relocation = (htab->elf.splt->output_section->vma
2529 + htab->elf.splt->output_offset
2530 + h->plt.offset);
b34976b6 2531 unresolved_reloc = FALSE;
26e41594 2532 break;
5236c819
MS		 2533
2534 case R_390_PLTOFF16:
2535 case R_390_PLTOFF32:
2536 case R_390_PLTOFF64:
26e41594
AM		 2537 /* Relocation is to the entry for this symbol in the
2538 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2539
2540 /* For local symbols or if we didn't make a PLT entry for
2541 this symbol resolve the symbol directly. */
31db78f6 2542 if (h == NULL
5236c819 2543 || h->plt.offset == (bfd_vma) -1
31db78f6 2544 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2545 {
afca762f 2546 relocation -= s390_got_pointer (info);
5236c819
MS		 2547 break;
2548 }
2549
470b557a
AK		 2550 if (s390_is_ifunc_symbol_p (h))
2551 relocation = (htab->elf.iplt->output_section->vma
2552 + htab->elf.iplt->output_offset
2553 + h->plt.offset
afca762f 2554 - s390_got_pointer (info));
470b557a
AK		 2555 else
2556 relocation = (htab->elf.splt->output_section->vma
2557 + htab->elf.splt->output_offset
2558 + h->plt.offset
afca762f 2559 - s390_got_pointer (info));
5236c819 2560 unresolved_reloc = FALSE;
947216bf
AM		 2561 break;
2562
947216bf 2563 case R_390_PC16:
fb798c50 2564 case R_390_PC12DBL:
947216bf 2565 case R_390_PC16DBL:
fb798c50 2566 case R_390_PC24DBL:
947216bf 2567 case R_390_PC32:
a85d7ed0 2568 case R_390_PC32DBL:
947216bf 2569 case R_390_PC64:
431e5de3
AK		 2570 if (h != NULL
2571 && bfd_link_pie (info)
2572 && !h->def_regular)
2573 {
871b3ab2 2574 _bfd_error_handler (_("%pB: `%s' non-PLT reloc for symbol defined "
431e5de3
AK		 2575 "in shared library and accessed "
2576 "from executable "
2577 "(rebuild file with -fPIC ?)"),
2578 input_bfd, h->root.root.string);
2579 bfd_set_error (bfd_error_bad_value);
2580 return FALSE;
2581 }
99ba5125
AK		 2582 /* The target of these relocs are instruction operands
2583 residing in read-only sections. We cannot emit a runtime
2584 reloc for it. */
2585 if (h != NULL
2586 && s390_is_ifunc_symbol_p (h)
2587 && h->def_regular
2588 && bfd_link_pic (info))
2589 {
2590 relocation = (htab->elf.iplt->output_section->vma
2591 + htab->elf.iplt->output_offset
2592 + h->plt.offset);
2593 goto do_relocation;
2594 }
1a0670f3 2595 /* Fall through. */
99ba5125
AK		 2596
2597 case R_390_8:
2598 case R_390_16:
2599 case R_390_32:
2600 case R_390_64:
470b557a 2601
f657f8c4
NC		 2602 if ((input_section->flags & SEC_ALLOC) == 0)
2603 break;
2604
470b557a
AK		 2605 if (h != NULL
2606 && s390_is_ifunc_symbol_p (h)
2607 && h->def_regular)
2608 {
d7ab4911 2609 if (!bfd_link_pic (info))
470b557a 2610 {
d7ab4911
AK		 2611 /* For a non-shared object the symbol will not
2612 change. Hence we can write the address of the
2613 target IPLT slot now. */
470b557a
AK		 2614 relocation = (htab->elf.iplt->output_section->vma
2615 + htab->elf.iplt->output_offset
2616 + h ->plt.offset);
2617 goto do_relocation;
2618 }
2619 else
2620 {
2621 /* For shared objects a runtime relocation is needed. */
2622
2623 Elf_Internal_Rela outrel;
2624 asection *sreloc;
2625
2626 /* Need a dynamic relocation to get the real function
2627 address. */
2628 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2629 info,
2630 input_section,
2631 rel->r_offset);
2632 if (outrel.r_offset == (bfd_vma) -1
2633 || outrel.r_offset == (bfd_vma) -2)
2634 abort ();
2635
2636 outrel.r_offset += (input_section->output_section->vma
2637 + input_section->output_offset);
2638
2639 if (h->dynindx == -1
2640 || h->forced_local
0e1862bb 2641 || bfd_link_executable (info))
470b557a
AK		 2642 {
2643 /* This symbol is resolved locally. */
2644 outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
2645 outrel.r_addend = (h->root.u.def.value
2646 + h->root.u.def.section->output_section->vma
2647 + h->root.u.def.section->output_offset);
2648 }
2649 else
2650 {
2651 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2652 outrel.r_addend = 0;
2653 }
2654
2655 sreloc = htab->elf.irelifunc;
2656 elf_append_rela (output_bfd, sreloc, &outrel);
2657
2658 /* If this reloc is against an external symbol, we
2659 do not want to fiddle with the addend. Otherwise,
2660 we need to include the symbol value so that it
2661 becomes an addend for the dynamic reloc. For an
2662 internal symbol, we have updated addend. */
2663 continue;
2664 }
2665 }
2666
0e1862bb 2667 if ((bfd_link_pic (info)
82058a73 2668 && (h == NULL
b27bb18f
L		 2669 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2670 && !resolved_to_zero)
82058a73 2671 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2672 && ((r_type != R_390_PC16
fb798c50 2673 && r_type != R_390_PC12DBL
0451c93c 2674 && r_type != R_390_PC16DBL
fb798c50 2675 && r_type != R_390_PC24DBL
0451c93c
MS		 2676 && r_type != R_390_PC32
2677 && r_type != R_390_PC32DBL
2678 && r_type != R_390_PC64)
8c21ca21 2679 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810 2680 || (ELIMINATE_COPY_RELOCS
0e1862bb 2681 && !bfd_link_pic (info)
0451c93c
MS		 2682 && h != NULL
2683 && h->dynindx != -1
f5385ebf
AM		 2684 && !h->non_got_ref
2685 && ((h->def_dynamic
2686 && !h->def_regular)
0451c93c
MS		 2687 || h->root.type == bfd_link_hash_undefweak
2688 || h->root.type == bfd_link_hash_undefined)))
947216bf
AM		 2689 {
2690 Elf_Internal_Rela outrel;
b34976b6 2691 bfd_boolean skip, relocate;
0451c93c 2692 asection *sreloc;
947216bf 2693 bfd_byte *loc;
a85d7ed0 2694
947216bf
AM		 2695 /* When generating a shared object, these relocations
2696 are copied into the output file to be resolved at run
2697 time. */
b34976b6
AM		 2698 skip = FALSE;
2699 relocate = FALSE;
a85d7ed0 2700
c629eae0
JJ		 2701 outrel.r_offset =
2702 _bfd_elf_section_offset (output_bfd, info, input_section,
2703 rel->r_offset);
2704 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2705 skip = TRUE;
0bb2d96a 2706 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2707 skip = TRUE, relocate = TRUE;
a85d7ed0 2708
947216bf
AM		 2709 outrel.r_offset += (input_section->output_section->vma
2710 + input_section->output_offset);
a85d7ed0 2711
947216bf 2712 if (skip)
0bb2d96a 2713 memset (&outrel, 0, sizeof outrel);
947216bf 2714 else if (h != NULL
0451c93c
MS		 2715 && h->dynindx != -1
2716 && (r_type == R_390_PC16
fb798c50 2717 || r_type == R_390_PC12DBL
0451c93c 2718 || r_type == R_390_PC16DBL
fb798c50 2719 || r_type == R_390_PC24DBL
0451c93c
MS		 2720 || r_type == R_390_PC32
2721 || r_type == R_390_PC32DBL
2722 || r_type == R_390_PC64
0e1862bb 2723 || !bfd_link_pic (info)
8c21ca21 2724 || !SYMBOLIC_BIND (info, h)
f5385ebf 2725 || !h->def_regular))
947216bf
AM		 2726 {
2727 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
27018c3f 2728 outrel.r_addend = rel->r_addend;
947216bf
AM		 2729 }
2730 else
2731 {
0451c93c 2732 /* This symbol is local, or marked to become local. */
90ced0dd 2733 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2734 if (r_type == R_390_64)
2735 {
2736 relocate = TRUE;
2737 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2738 }
2739 else
2740 {
2741 long sindx;
2742
90ced0dd 2743 if (bfd_is_abs_section (sec))
b5727d75
MS		 2744 sindx = 0;
2745 else if (sec == NULL || sec->owner == NULL)
2746 {
2747 bfd_set_error(bfd_error_bad_value);
2748 return FALSE;
2749 }
2750 else
2751 {
2752 asection *osec;
2753
2754 osec = sec->output_section;
2755 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2756
2757 if (sindx == 0)
2758 {
2759 osec = htab->elf.text_index_section;
2760 sindx = elf_section_data (osec)->dynindx;
2761 }
2762 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2763
2764 /* We are turning this relocation into one
2765 against a section symbol, so subtract out
2766 the output section's address but not the
2767 offset of the input section in the output
2768 section. */
90ced0dd 2769 outrel.r_addend -= osec->vma;
b5727d75
MS		 2770 }
2771 outrel.r_info = ELF64_R_INFO (sindx, r_type);
b5727d75 2772 }
0451c93c 2773 }
a85d7ed0 2774
0451c93c
MS		 2775 sreloc = elf_section_data (input_section)->sreloc;
2776 if (sreloc == NULL)
2777 abort ();
2778
947216bf
AM		 2779 loc = sreloc->contents;
2780 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2781 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
a85d7ed0 2782
947216bf
AM		 2783 /* If this reloc is against an external symbol, we do
2784 not want to fiddle with the addend. Otherwise, we
2785 need to include the symbol value so that it becomes
2786 an addend for the dynamic reloc. */
2787 if (! relocate)
2788 continue;
2789 }
a85d7ed0 2790
947216bf 2791 break;
a85d7ed0 2792
69fc87f1
MS		 2793 /* Relocations for tls literal pool entries. */
2794 case R_390_TLS_IE64:
0e1862bb 2795 if (bfd_link_pic (info))
69fc87f1
MS		 2796 {
2797 Elf_Internal_Rela outrel;
2798 asection *sreloc;
2799 bfd_byte *loc;
2800
2801 outrel.r_offset = rel->r_offset
2802 + input_section->output_section->vma
2803 + input_section->output_offset;
2804 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2805 sreloc = elf_section_data (input_section)->sreloc;
2806 if (sreloc == NULL)
2807 abort ();
2808 loc = sreloc->contents;
2809 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2810 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2811 }
ae9a127f 2812 /* Fall through. */
69fc87f1
MS		 2813
2814 case R_390_TLS_GD64:
2815 case R_390_TLS_GOTIE64:
2816 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2817 tls_type = GOT_UNKNOWN;
2818 if (h == NULL && local_got_offsets)
2819 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2820 else if (h != NULL)
2821 {
2822 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 2823 if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
69fc87f1
MS		 2824 r_type = R_390_TLS_LE64;
2825 }
2826 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2827 r_type = R_390_TLS_IE64;
2828
2829 if (r_type == R_390_TLS_LE64)
2830 {
2831 /* This relocation gets optimized away by the local exec
2832 access optimization. */
2833 BFD_ASSERT (! unresolved_reloc);
2834 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2835 contents + rel->r_offset);
2836 continue;
2837 }
2838
f41345a7 2839 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2840 abort ();
2841
2842 if (h != NULL)
2843 off = h->got.offset;
2844 else
2845 {
2846 if (local_got_offsets == NULL)
2847 abort ();
2848
2849 off = local_got_offsets[r_symndx];
2850 }
2851
2852 emit_tls_relocs:
2853
2854 if ((off & 1) != 0)
2855 off &= ~1;
26e41594 2856 else
69fc87f1
MS		 2857 {
2858 Elf_Internal_Rela outrel;
2859 bfd_byte *loc;
2860 int dr_type, indx;
2861
f41345a7 2862 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2863 abort ();
2864
f41345a7
AK		 2865 outrel.r_offset = (htab->elf.sgot->output_section->vma
2866 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2867
2868 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2869 if (r_type == R_390_TLS_GD64)
2870 dr_type = R_390_TLS_DTPMOD;
2871 else
2872 dr_type = R_390_TLS_TPOFF;
2873 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2874 outrel.r_addend = relocation - dtpoff_base (info);
2875 else
2876 outrel.r_addend = 0;
2877 outrel.r_info = ELF64_R_INFO (indx, dr_type);
f41345a7
AK		 2878 loc = htab->elf.srelgot->contents;
2879 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2880 * sizeof (Elf64_External_Rela);
2881 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2882
2883 if (r_type == R_390_TLS_GD64)
2884 {
2885 if (indx == 0)
2886 {
07d6d2b8 2887 BFD_ASSERT (! unresolved_reloc);
69fc87f1
MS		 2888 bfd_put_64 (output_bfd,
2889 relocation - dtpoff_base (info),
f41345a7 2890 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2891 }
2892 else
2893 {
2894 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
2895 outrel.r_offset += GOT_ENTRY_SIZE;
2896 outrel.r_addend = 0;
f41345a7 2897 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 2898 loc += sizeof (Elf64_External_Rela);
2899 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2900 }
2901 }
2902
2903 if (h != NULL)
2904 h->got.offset |= 1;
2905 else
2906 local_got_offsets[r_symndx] |= 1;
2907 }
2908
2909 if (off >= (bfd_vma) -2)
2910 abort ();
2911 if (r_type == ELF64_R_TYPE (rel->r_info))
2912 {
f41345a7 2913 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2914 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
f41345a7 2915 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2916 unresolved_reloc = FALSE;
2917 }
2918 else
2919 {
f41345a7 2920 bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 2921 contents + rel->r_offset);
2922 continue;
2923 }
2924 break;
2925
2926 case R_390_TLS_GOTIE12:
bd1ea41b 2927 case R_390_TLS_GOTIE20:
69fc87f1
MS		 2928 case R_390_TLS_IEENT:
2929 if (h == NULL)
2930 {
2931 if (local_got_offsets == NULL)
2932 abort();
2933 off = local_got_offsets[r_symndx];
0e1862bb 2934 if (bfd_link_pic (info))
69fc87f1
MS		 2935 goto emit_tls_relocs;
2936 }
2937 else
2938 {
2939 off = h->got.offset;
2940 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb 2941 if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE)
69fc87f1
MS		 2942 goto emit_tls_relocs;
2943 }
2944
f41345a7 2945 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2946 abort ();
2947
2948 BFD_ASSERT (! unresolved_reloc);
2949 bfd_put_64 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 2950 htab->elf.sgot->contents + off);
2951 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2952 if (r_type == R_390_TLS_IEENT)
f41345a7 2953 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2954 unresolved_reloc = FALSE;
2955 break;
2956
2957 case R_390_TLS_LDM64:
0e1862bb 2958 if (! bfd_link_pic (info))
69fc87f1
MS		 2959 /* The literal pool entry this relocation refers to gets ignored
2960 by the optimized code of the local exec model. Do nothing
2961 and the value will turn out zero. */
2962 continue;
2963
f41345a7 2964 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2965 abort ();
2966
2967 off = htab->tls_ldm_got.offset;
2968 if (off & 1)
2969 off &= ~1;
2970 else
2971 {
2972 Elf_Internal_Rela outrel;
2973 bfd_byte *loc;
2974
f41345a7 2975 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2976 abort ();
2977
f41345a7
AK		 2978 outrel.r_offset = (htab->elf.sgot->output_section->vma
2979 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2980
2981 bfd_put_64 (output_bfd, 0,
f41345a7 2982 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2983 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
2984 outrel.r_addend = 0;
f41345a7
AK		 2985 loc = htab->elf.srelgot->contents;
2986 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2987 * sizeof (Elf64_External_Rela);
2988 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2989 htab->tls_ldm_got.offset |= 1;
2990 }
f41345a7 2991 relocation = htab->elf.sgot->output_offset + off;
26e41594 2992 unresolved_reloc = FALSE;
69fc87f1
MS		 2993 break;
2994
2995 case R_390_TLS_LE64:
3cbc1e5e 2996 if (bfd_link_dll (info))
69fc87f1
MS		 2997 {
2998 /* Linking a shared library with non-fpic code requires
2999 a R_390_TLS_TPOFF relocation. */
3000 Elf_Internal_Rela outrel;
3001 asection *sreloc;
3002 bfd_byte *loc;
3003 int indx;
3004
3005 outrel.r_offset = rel->r_offset
3006 + input_section->output_section->vma
3007 + input_section->output_offset;
3008 if (h != NULL && h->dynindx != -1)
3009 indx = h->dynindx;
3010 else
3011 indx = 0;
3012 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
3013 if (indx == 0)
3014 outrel.r_addend = relocation - dtpoff_base (info);
3015 else
3016 outrel.r_addend = 0;
3017 sreloc = elf_section_data (input_section)->sreloc;
3018 if (sreloc == NULL)
3019 abort ();
3020 loc = sreloc->contents;
3021 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
3022 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3023 }
3024 else
3025 {
3026 BFD_ASSERT (! unresolved_reloc);
3027 bfd_put_64 (output_bfd, -tpoff (info, relocation),
3028 contents + rel->r_offset);
3029 }
3030 continue;
3031
3032 case R_390_TLS_LDO64:
0e1862bb 3033 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 3034 relocation -= dtpoff_base (info);
3035 else
3036 /* When converting LDO to LE, we must negate. */
3037 relocation = -tpoff (info, relocation);
3038 break;
3039
3040 /* Relocations for tls instructions. */
3041 case R_390_TLS_LOAD:
3042 case R_390_TLS_GDCALL:
3043 case R_390_TLS_LDCALL:
3044 tls_type = GOT_UNKNOWN;
3045 if (h == NULL && local_got_offsets)
3046 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3047 else if (h != NULL)
3048 tls_type = elf_s390_hash_entry(h)->tls_type;
3049
3050 if (tls_type == GOT_TLS_GD)
3051 continue;
3052
3053 if (r_type == R_390_TLS_LOAD)
3054 {
0e1862bb 3055 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3056 {
3057 /* IE->LE transition. Four valid cases:
3058 lg %rx,(0,%ry) -> sllg %rx,%ry,0
3059 lg %rx,(%ry,0) -> sllg %rx,%ry,0
3060 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
3061 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
3062 unsigned int insn0, insn1, ry;
3063
3064 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3065 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3066 if (insn1 != 0x0004)
3704e358
AK		 3067 {
3068 invalid_tls_insn (input_bfd, input_section, rel);
3069 return FALSE;
3070 }
69fc87f1
MS		 3071 if ((insn0 & 0xff00f000) == 0xe3000000)
3072 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
3073 ry = (insn0 & 0x000f0000);
3074 else if ((insn0 & 0xff0f0000) == 0xe3000000)
3075 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
3076 ry = (insn0 & 0x0000f000) << 4;
3077 else if ((insn0 & 0xff00f000) == 0xe300c000)
3078 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
3079 ry = (insn0 & 0x000f0000);
3080 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
3081 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
3082 ry = (insn0 & 0x0000f000) << 4;
3083 else
3704e358
AK		 3084 {
3085 invalid_tls_insn (input_bfd, input_section, rel);
3086 return FALSE;
3087 }
69fc87f1
MS		 3088 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
3089 insn1 = 0x000d;
3090 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3091 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3092 }
3093 }
3094 else if (r_type == R_390_TLS_GDCALL)
3095 {
3096 unsigned int insn0, insn1;
3097
3098 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3099 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3100 if ((insn0 & 0xffff0000) != 0xc0e50000)
3704e358
AK		 3101 {
3102 invalid_tls_insn (input_bfd, input_section, rel);
3103 return FALSE;
3104 }
0e1862bb 3105 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3106 {
3107 /* GD->LE transition.
3108 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3109 insn0 = 0xc0040000;
3110 insn1 = 0x0000;
3111 }
3112 else
3113 {
3114 /* GD->IE transition.
3115 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
3116 insn0 = 0xe322c000;
3117 insn1 = 0x0004;
3118 }
3119 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3120 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3121 }
3122 else if (r_type == R_390_TLS_LDCALL)
3123 {
0e1862bb 3124 if (!bfd_link_pic (info))
69fc87f1
MS		 3125 {
3126 unsigned int insn0, insn1;
3127
3128 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3129 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3130 if ((insn0 & 0xffff0000) != 0xc0e50000)
3704e358
AK		 3131 {
3132 invalid_tls_insn (input_bfd, input_section, rel);
3133 return FALSE;
3134 }
69fc87f1
MS		 3135 /* LD->LE transition.
3136 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3137 insn0 = 0xc0040000;
3138 insn1 = 0x0000;
3139 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3140 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3141 }
3142 }
3143 continue;
3144
947216bf
AM		 3145 default:
3146 break;
3147 }
a85d7ed0 3148
239e1f3a
AM		 3149 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3150 because such sections are not SEC_ALLOC and thus ld.so will
3151 not process them. */
0451c93c 3152 if (unresolved_reloc
239e1f3a 3153 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3154 && h->def_dynamic)
3155 && _bfd_elf_section_offset (output_bfd, info, input_section,
3156 rel->r_offset) != (bfd_vma) -1)
4eca0228 3157 _bfd_error_handler
695344c0 3158 /* xgettext:c-format */
2dcf00ce
AM		 3159 (_("%pB(%pA+%#" PRIx64 "): "
3160 "unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3161 input_bfd,
3162 input_section,
2dcf00ce 3163 (uint64_t) rel->r_offset,
843fe662 3164 howto->name,
0451c93c
MS		 3165 h->root.root.string);
3166
470b557a
AK		 3167 do_relocation:
3168
fb798c50
AK		 3169 /* When applying a 24 bit reloc we need to start one byte
3170 earlier. Otherwise the 32 bit get/put bfd operations might
3171 access a byte after the actual section. */
3172 if (r_type == R_390_PC24DBL
3173 || r_type == R_390_PLT24DBL)
3174 rel->r_offset--;
3175
bd1ea41b
MS		 3176 if (r_type == R_390_20
3177 || r_type == R_390_GOT20
3178 || r_type == R_390_GOTPLT20
3179 || r_type == R_390_TLS_GOTIE20)
3180 {
3181 relocation += rel->r_addend;
3182 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3183 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3184 contents, rel->r_offset,
3185 relocation, 0);
3186 }
3187 else
3188 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
a85d7ed0
NC		 3189 contents, rel->r_offset,
3190 relocation, rel->r_addend);
3191
3192 if (r != bfd_reloc_ok)
3193 {
0451c93c 3194 const char *name;
ec338859 3195
0451c93c
MS		 3196 if (h != NULL)
3197 name = h->root.root.string;
3198 else
a85d7ed0 3199 {
0451c93c
MS		 3200 name = bfd_elf_string_from_elf_section (input_bfd,
3201 symtab_hdr->sh_link,
3202 sym->st_name);
3203 if (name == NULL)
b34976b6 3204 return FALSE;
0451c93c 3205 if (*name == '\0')
fd361982 3206 name = bfd_section_name (sec);
0451c93c 3207 }
ec338859 3208
0451c93c 3209 if (r == bfd_reloc_overflow)
1a72702b
AM		 3210 (*info->callbacks->reloc_overflow)
3211 (info, (h ? &h->root : NULL), name, howto->name,
3212 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
0451c93c
MS		 3213 else
3214 {
4eca0228 3215 _bfd_error_handler
695344c0 3216 /* xgettext:c-format */
2dcf00ce 3217 (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"),
d003868e 3218 input_bfd, input_section,
2dcf00ce 3219 (uint64_t) rel->r_offset, name, (int) r);
b34976b6 3220 return FALSE;
a85d7ed0
NC		 3221 }
3222 }
3223 }
3224
b34976b6 3225 return TRUE;
a85d7ed0
NC		 3226}
3227
470b557a
AK		 3228/* Generate the PLT slots together with the dynamic relocations needed
3229 for IFUNC symbols. */
3230
3231static void
3232elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3233 struct bfd_link_info *info,
3234 struct elf_link_hash_entry *h,
3235 struct elf_s390_link_hash_table *htab,
3236 bfd_vma plt_offset,
3237 bfd_vma resolver_address)
3238{
3239 bfd_vma plt_index;
3240 bfd_vma got_offset;
3241 Elf_Internal_Rela rela;
3242 bfd_byte *loc;
3243 asection *plt, *gotplt, *relplt;
3244
3245 if (htab->elf.iplt == NULL
3246 || htab->elf.igotplt == NULL
3247 || htab->elf.irelplt == NULL)
3248 abort ();
3249
3250 /* Index of the PLT slot within iplt section. */
3251 plt_index = plt_offset / PLT_ENTRY_SIZE;
3252 plt = htab->elf.iplt;
3253 /* Offset into the igot.plt section. */
3254 got_offset = plt_index * GOT_ENTRY_SIZE;
3255 gotplt = htab->elf.igotplt;
3256 relplt = htab->elf.irelplt;
3257
3258 /* Fill in the blueprint of a PLT. */
3259 memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
3260 PLT_ENTRY_SIZE);
3261
3262 /* Fixup the relative address to the GOT entry */
3263 bfd_put_32 (output_bfd,
3264 (gotplt->output_section->vma +
3265 gotplt->output_offset + got_offset
3266 - (plt->output_section->vma +
3267 plt->output_offset +
3268 plt_offset))/2,
3269 plt->contents + plt_offset + 2);
3270 /* Fixup the relative branch to PLT 0 */
3271 bfd_put_32 (output_bfd, - (plt->output_offset +
3272 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3273 plt->contents + plt_offset + 24);
3274 /* Fixup offset into .rela.plt section. */
3275 bfd_put_32 (output_bfd, relplt->output_offset +
3276 plt_index * sizeof (Elf64_External_Rela),
3277 plt->contents + plt_offset + 28);
3278
3279 /* Fill in the entry in the global offset table.
3280 Points to instruction after GOT offset. */
3281 bfd_put_64 (output_bfd,
3282 (plt->output_section->vma
3283 + plt->output_offset
3284 + plt_offset
3285 + 14),
3286 gotplt->contents + got_offset);
3287
3288 /* Fill in the entry in the .rela.plt section. */
3289 rela.r_offset = (gotplt->output_section->vma
3290 + gotplt->output_offset
3291 + got_offset);
3292
3293 if (!h
3294 || h->dynindx == -1
0e1862bb 3295 || ((bfd_link_executable (info)
470b557a
AK		 3296 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3297 && h->def_regular))
3298 {
3299 /* The symbol can be locally resolved. */
3300 rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
3301 rela.r_addend = resolver_address;
3302 }
3303 else
3304 {
3305 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3306 rela.r_addend = 0;
3307 }
3308
3309 loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
3310 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3311}
3312
3313
a85d7ed0
NC		 3314/* Finish up dynamic symbol handling. We set the contents of various
3315 dynamic sections here. */
3316
b34976b6 3317static bfd_boolean
4dfe6ac6
NC		 3318elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3319 struct bfd_link_info *info,
3320 struct elf_link_hash_entry *h,
3321 Elf_Internal_Sym *sym)
a85d7ed0 3322{
0451c93c 3323 struct elf_s390_link_hash_table *htab;
470b557a 3324 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
a85d7ed0 3325
0451c93c 3326 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3327 if (htab == NULL)
3328 return FALSE;
a85d7ed0
NC		 3329
3330 if (h->plt.offset != (bfd_vma) -1)
3331 {
a85d7ed0 3332 bfd_vma plt_index;
afca762f 3333 bfd_vma gotplt_offset;
0451c93c 3334 Elf_Internal_Rela rela;
947216bf 3335 bfd_byte *loc;
a85d7ed0
NC		 3336
3337 /* This symbol has an entry in the procedure linkage table. Set
947216bf 3338 it up. */
0a511368 3339 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
470b557a 3340 {
0a511368
AK		 3341 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3342 htab, h->plt.offset,
3343 eh->ifunc_resolver_address +
3344 eh->ifunc_resolver_section->output_offset +
3345 eh->ifunc_resolver_section->output_section->vma);
3346
3347 /* Do not return yet. Handling of explicit GOT slots of
3348 IFUNC symbols is below. */
470b557a
AK		 3349 }
3350 else
3351 {
3352 if (h->dynindx == -1
3353 || htab->elf.splt == NULL
3354 || htab->elf.sgotplt == NULL
3355 || htab->elf.srelplt == NULL)
3356 abort ();
a85d7ed0 3357
470b557a
AK		 3358 /* Calc. index no.
3359 Current offset - size first entry / entry size. */
3360 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
a85d7ed0 3361
afca762f
AK		 3362 /* The slots in the .got.plt correspond to the PLT slots in
3363 the same order. */
3364 gotplt_offset = plt_index * GOT_ENTRY_SIZE;
3365
3366 /* If .got.plt comes first it needs to contain the 3 header
3367 entries. */
3368 if (!s390_gotplt_after_got_p (info))
3369 gotplt_offset += 3 * GOT_ENTRY_SIZE;
a85d7ed0 3370
470b557a
AK		 3371 /* Fill in the blueprint of a PLT. */
3372 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
3373 PLT_ENTRY_SIZE);
3374
afca762f
AK		 3375 /* The first instruction in the PLT entry is a LARL loading
3376 the address of the GOT slot. We write the 4 byte
3377 immediate operand of the LARL instruction here. */
470b557a
AK		 3378 bfd_put_32 (output_bfd,
3379 (htab->elf.sgotplt->output_section->vma +
afca762f 3380 htab->elf.sgotplt->output_offset + gotplt_offset
470b557a
AK		 3381 - (htab->elf.splt->output_section->vma +
3382 htab->elf.splt->output_offset +
3383 h->plt.offset))/2,
3384 htab->elf.splt->contents + h->plt.offset + 2);
3385 /* Fixup the relative branch to PLT 0 */
3386 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3387 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3388 htab->elf.splt->contents + h->plt.offset + 24);
3389 /* Fixup offset into .rela.plt section. */
3390 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3391 htab->elf.splt->contents + h->plt.offset + 28);
3392
3393 /* Fill in the entry in the global offset table.
3394 Points to instruction after GOT offset. */
3395 bfd_put_64 (output_bfd,
3396 (htab->elf.splt->output_section->vma
3397 + htab->elf.splt->output_offset
3398 + h->plt.offset
3399 + 14),
afca762f 3400 htab->elf.sgotplt->contents + gotplt_offset);
470b557a
AK		 3401
3402 /* Fill in the entry in the .rela.plt section. */
3403 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3404 + htab->elf.sgotplt->output_offset
afca762f 3405 + gotplt_offset);
470b557a
AK		 3406 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3407 rela.r_addend = 0;
3408 loc = htab->elf.srelplt->contents + plt_index *
3409 sizeof (Elf64_External_Rela);
3410 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3411
3412 if (!h->def_regular)
3413 {
3414 /* Mark the symbol as undefined, rather than as defined in
3415 the .plt section. Leave the value alone. This is a clue
3416 for the dynamic linker, to make function pointer
3417 comparisons work between an application and shared
3418 library. */
3419 sym->st_shndx = SHN_UNDEF;
3420 }
a85d7ed0
NC		 3421 }
3422 }
3423
69fc87f1
MS		 3424 if (h->got.offset != (bfd_vma) -1
3425 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3426 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3427 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3428 {
a85d7ed0 3429 Elf_Internal_Rela rela;
947216bf 3430 bfd_byte *loc;
a85d7ed0
NC		 3431
3432 /* This symbol has an entry in the global offset table. Set it
947216bf 3433 up. */
f41345a7 3434 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3435 abort ();
a85d7ed0 3436
f41345a7
AK		 3437 rela.r_offset = (htab->elf.sgot->output_section->vma
3438 + htab->elf.sgot->output_offset
dc810e39 3439 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0 3440
470b557a
AK		 3441 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3442 {
0e1862bb 3443 if (bfd_link_pic (info))
470b557a
AK		 3444 {
3445 /* An explicit GOT slot usage needs GLOB_DAT. If the
3446 symbol references local the implicit got.iplt slot
3447 will be used and the IRELATIVE reloc has been created
3448 above. */
3449 goto do_glob_dat;
3450 }
3451 else
3452 {
3453 /* For non-shared objects explicit GOT slots must be
3454 filled with the PLT slot address for pointer
3455 equality reasons. */
3456 bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
3457 + htab->elf.iplt->output_offset
3458 + h->plt.offset),
3459 htab->elf.sgot->contents + h->got.offset);
3460 return TRUE;
3461 }
3462 }
0e1862bb 3463 else if (bfd_link_pic (info)
ceada896 3464 && SYMBOL_REFERENCES_LOCAL (info, h))
947216bf 3465 {
10e7c045
AK		 3466 if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
3467 return TRUE;
3468
470b557a
AK		 3469 /* If this is a static link, or it is a -Bsymbolic link and
3470 the symbol is defined locally or was forced to be local
3471 because of a version file, we just want to emit a
3472 RELATIVE reloc. The entry in the global offset table
3473 will already have been initialized in the
3474 relocate_section function. */
8170f769 3475 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
8c21ca21 3476 return FALSE;
0451c93c 3477 BFD_ASSERT((h->got.offset & 1) != 0);
947216bf
AM		 3478 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3479 rela.r_addend = (h->root.u.def.value
3480 + h->root.u.def.section->output_section->vma
3481 + h->root.u.def.section->output_offset);
3482 }
a85d7ed0
NC		 3483 else
3484 {
3485 BFD_ASSERT((h->got.offset & 1) == 0);
ceada896 3486 do_glob_dat:
f41345a7 3487 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3488 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
947216bf
AM		 3489 rela.r_addend = 0;
3490 }
a85d7ed0 3491
f41345a7
AK		 3492 loc = htab->elf.srelgot->contents;
3493 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3494 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3495 }
3496
f5385ebf 3497 if (h->needs_copy)
a85d7ed0 3498 {
a85d7ed0 3499 Elf_Internal_Rela rela;
5474d94f 3500 asection *s;
947216bf 3501 bfd_byte *loc;
a85d7ed0
NC		 3502
3503 /* This symbols needs a copy reloc. Set it up. */
3504
0451c93c
MS		 3505 if (h->dynindx == -1
3506 || (h->root.type != bfd_link_hash_defined
3507 && h->root.type != bfd_link_hash_defweak)
9d19e4fd 3508 || htab->elf.srelbss == NULL)
0451c93c 3509 abort ();
a85d7ed0
NC		 3510
3511 rela.r_offset = (h->root.u.def.value
3512 + h->root.u.def.section->output_section->vma
3513 + h->root.u.def.section->output_offset);
3514 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3515 rela.r_addend = 0;
afbf7e8e 3516 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 3517 s = htab->elf.sreldynrelro;
3518 else
3519 s = htab->elf.srelbss;
3520 loc = s->contents + s->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3521 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3522 }
3523
3524 /* Mark some specially defined symbols as absolute. */
9637f6ef 3525 if (h == htab->elf.hdynamic
22edb2f1
RS		 3526 || h == htab->elf.hgot
3527 || h == htab->elf.hplt)
a85d7ed0
NC		 3528 sym->st_shndx = SHN_ABS;
3529
b34976b6 3530 return TRUE;
a85d7ed0
NC		 3531}
3532
0451c93c
MS		 3533/* Used to decide how to sort relocs in an optimal manner for the
3534 dynamic linker, before writing them out. */
3535
3536static enum elf_reloc_type_class
7e612e98
AM		 3537elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3538 const asection *rel_sec ATTRIBUTE_UNUSED,
3539 const Elf_Internal_Rela *rela)
0451c93c 3540{
0f042c67
AK		 3541 bfd *abfd = info->output_bfd;
3542 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3543 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3544 unsigned long r_symndx = ELF64_R_SYM (rela->r_info);
3545 Elf_Internal_Sym sym;
3546
3547 if (htab->elf.dynsym == NULL
3548 || !bed->s->swap_symbol_in (abfd,
3549 (htab->elf.dynsym->contents
3550 + r_symndx * bed->s->sizeof_sym),
3551 0, &sym))
3552 abort ();
3553
3554 /* Check relocation against STT_GNU_IFUNC symbol. */
3555 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3556 return reloc_class_ifunc;
3557
0451c93c
MS		 3558 switch ((int) ELF64_R_TYPE (rela->r_info))
3559 {
3560 case R_390_RELATIVE:
3561 return reloc_class_relative;
3562 case R_390_JMP_SLOT:
3563 return reloc_class_plt;
3564 case R_390_COPY:
3565 return reloc_class_copy;
3566 default:
3567 return reloc_class_normal;
3568 }
3569}
3570
a85d7ed0
NC		 3571/* Finish up the dynamic sections. */
3572
b34976b6 3573static bfd_boolean
4dfe6ac6
NC		 3574elf_s390_finish_dynamic_sections (bfd *output_bfd,
3575 struct bfd_link_info *info)
a85d7ed0 3576{
0451c93c 3577 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3578 bfd *dynobj;
3579 asection *sdyn;
470b557a
AK		 3580 bfd *ibfd;
3581 unsigned int i;
a85d7ed0 3582
0451c93c 3583 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3584 if (htab == NULL)
3585 return FALSE;
3586
0451c93c 3587 dynobj = htab->elf.dynobj;
3d4d4302 3588 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3589
0451c93c 3590 if (htab->elf.dynamic_sections_created)
a85d7ed0 3591 {
a85d7ed0
NC		 3592 Elf64_External_Dyn *dyncon, *dynconend;
3593
f41345a7 3594 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3595 abort ();
a85d7ed0
NC		 3596
3597 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 3598 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3599 for (; dyncon < dynconend; dyncon++)
3600 {
3601 Elf_Internal_Dyn dyn;
a85d7ed0 3602 asection *s;
ec338859 3603
a85d7ed0 3604 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3605
a85d7ed0
NC		 3606 switch (dyn.d_tag)
3607 {
3608 default:
0451c93c 3609 continue;
ec338859 3610
a85d7ed0 3611 case DT_PLTGOT:
afca762f
AK		 3612 /* DT_PLTGOT matches _GLOBAL_OFFSET_TABLE_ */
3613 dyn.d_un.d_ptr = s390_got_pointer (info);
0451c93c 3614 break;
ec338859 3615
a85d7ed0 3616 case DT_JMPREL:
4ade44b7
AM		 3617 s = htab->elf.srelplt;
3618 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a85d7ed0 3619 break;
ec338859 3620
a85d7ed0 3621 case DT_PLTRELSZ:
79c12fae
AK		 3622 dyn.d_un.d_val = htab->elf.srelplt->size;
3623 if (htab->elf.irelplt)
3624 dyn.d_un.d_val += htab->elf.irelplt->size;
a85d7ed0 3625 break;
ec338859 3626
a85d7ed0
NC		 3627 case DT_RELASZ:
3628 /* The procedure linkage table relocs (DT_JMPREL) should
3629 not be included in the overall relocs (DT_RELA).
3630 Therefore, we override the DT_RELASZ entry here to
3631 make it not include the JMPREL relocs. Since the
3632 linker script arranges for .rela.plt to follow all
3633 other relocation sections, we don't have to worry
3634 about changing the DT_RELA entry. */
79c12fae
AK		 3635 dyn.d_un.d_val -= htab->elf.srelplt->size;
3636 if (htab->elf.irelplt)
3637 dyn.d_un.d_val -= htab->elf.irelplt->size;
a85d7ed0
NC		 3638 break;
3639 }
0451c93c
MS		 3640
3641 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3642 }
3643
3644 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3645 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0
NC		 3646 {
3647 /* fill in blueprint for plt 0 entry */
f41345a7 3648 memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
9aa17453 3649 PLT_FIRST_ENTRY_SIZE);
afca762f
AK		 3650 /* The second instruction in the first PLT entry is a LARL
3651 loading the GOT pointer. Fill in the LARL immediate
3652 address. */
a85d7ed0 3653 bfd_put_32 (output_bfd,
afca762f 3654 (s390_got_pointer (info)
161db279
AK		 3655 - htab->elf.splt->output_section->vma
3656 - htab->elf.splt->output_offset - 6)/2,
f41345a7 3657 htab->elf.splt->contents + 8);
a85d7ed0 3658 }
387f8054
MR		 3659 if (elf_section_data (htab->elf.splt->output_section) != NULL)
3660 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
3661 = PLT_ENTRY_SIZE;
a85d7ed0
NC		 3662 }
3663
afca762f 3664 if (htab->elf.hgot && htab->elf.hgot->root.u.def.section)
a85d7ed0 3665 {
0451c93c 3666 /* Fill in the first three entries in the global offset table. */
afca762f 3667 if (htab->elf.hgot->root.u.def.section->size > 0)
0451c93c
MS		 3668 {
3669 bfd_put_64 (output_bfd,
3670 (sdyn == NULL ? (bfd_vma) 0
3671 : sdyn->output_section->vma + sdyn->output_offset),
afca762f 3672 htab->elf.hgot->root.u.def.section->contents);
0451c93c 3673 /* One entry for shared object struct ptr. */
afca762f
AK		 3674 bfd_put_64 (output_bfd, (bfd_vma) 0,
3675 htab->elf.hgot->root.u.def.section->contents + 8);
0451c93c 3676 /* One entry for _dl_runtime_resolve. */
afca762f
AK		 3677 bfd_put_64 (output_bfd, (bfd_vma) 0,
3678 htab->elf.hgot->root.u.def.section->contents + 16);
0451c93c 3679 }
f41345a7 3680 elf_section_data (htab->elf.sgot->output_section)
0451c93c
MS		 3681 ->this_hdr.sh_entsize = 8;
3682 }
470b557a
AK		 3683
3684 /* Finish dynamic symbol for local IFUNC symbols. */
c72f2fb2 3685 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
470b557a
AK		 3686 {
3687 struct plt_entry *local_plt;
3688 Elf_Internal_Sym *isym;
3689 Elf_Internal_Shdr *symtab_hdr;
3690
3691 symtab_hdr = &elf_symtab_hdr (ibfd);
3692
1ef692ea
AK		 3693 if (!is_s390_elf (ibfd))
3694 continue;
3695
470b557a
AK		 3696 local_plt = elf_s390_local_plt (ibfd);
3697 if (local_plt != NULL)
3698 for (i = 0; i < symtab_hdr->sh_info; i++)
3699 {
3700 if (local_plt[i].plt.offset != (bfd_vma) -1)
3701 {
3702 asection *sec = local_plt[i].sec;
3703 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3704 if (isym == NULL)
3705 return FALSE;
3706
3707 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3708 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3709 local_plt[i].plt.offset,
3710 isym->st_value
3711 + sec->output_section->vma
3712 + sec->output_offset);
3713
3714 }
3715 }
3716 }
3717
b34976b6 3718 return TRUE;
a85d7ed0 3719}
e3e9290d
AA		 3720\f
3721/* Support for core dump NOTE sections. */
a85d7ed0 3722
e3e9290d
AA		 3723static bfd_boolean
3724elf_s390_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3725{
3726 int offset;
3727 size_t size;
3728
3729 switch (note->descsz)
3730 {
3731 default:
3732 return FALSE;
3733
3734 case 336: /* sizeof(struct elf_prstatus) on s390x */
3735 /* pr_cursig */
3736 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
3737
3738 /* pr_pid */
3739 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
3740
3741 /* pr_reg */
3742 offset = 112;
3743 size = 216;
3744 break;
3745 }
3746
3747 /* Make a ".reg/999" section. */
3748 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3749 size, note->descpos + offset);
3750}
3751
3752static bfd_boolean
3753elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3754{
3755 switch (note->descsz)
3756 {
3757 default:
3758 return FALSE;
3759
3760 case 136: /* sizeof(struct elf_prpsinfo) on s390x */
3761 elf_tdata (abfd)->core->pid
3762 = bfd_get_32 (abfd, note->descdata + 24);
3763 elf_tdata (abfd)->core->program
3764 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
3765 elf_tdata (abfd)->core->command
3766 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
3767 }
3768
3769 /* Note that for some reason, a spurious space is tacked
3770 onto the end of the args in some (at least one anyway)
3771 implementations, so strip it off if it exists. */
3772
3773 {
3774 char *command = elf_tdata (abfd)->core->command;
3775 int n = strlen (command);
3776
3777 if (0 < n && command[n - 1] == ' ')
3778 command[n - 1] = '\0';
3779 }
3780
3781 return TRUE;
3782}
3783
3784static char *
3785elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
3786 int note_type, ...)
3787{
3788 va_list ap;
3789
3790 switch (note_type)
3791 {
3792 default:
3793 return NULL;
3794
3795 case NT_PRPSINFO:
3796 {
602f1657 3797 char data[136] ATTRIBUTE_NONSTRING = { 0 };
e3e9290d
AA		 3798 const char *fname, *psargs;
3799
3800 va_start (ap, note_type);
3801 fname = va_arg (ap, const char *);
3802 psargs = va_arg (ap, const char *);
3803 va_end (ap);
3804
3805 strncpy (data + 40, fname, 16);
898ade12 3806#if GCC_VERSION == 8000 || GCC_VERSION == 8001
95da9854 3807 DIAGNOSTIC_PUSH;
be3e27bb 3808 /* GCC 8.0 and 8.1 warn about 80 equals destination size with
95da9854
L		 3809 -Wstringop-truncation:
3810 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643
3811 */
95da9854
L		 3812 DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION;
3813#endif
e3e9290d 3814 strncpy (data + 56, psargs, 80);
898ade12 3815#if GCC_VERSION == 8000 || GCC_VERSION == 8001
95da9854 3816 DIAGNOSTIC_POP;
fe75810f 3817#endif
e3e9290d
AA		 3818 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3819 &data, sizeof (data));
3820 }
3821
3822 case NT_PRSTATUS:
3823 {
3824 char data[336] = { 0 };
3825 long pid;
3826 int cursig;
3827 const void *gregs;
3828
3829 va_start (ap, note_type);
3830 pid = va_arg (ap, long);
3831 cursig = va_arg (ap, int);
3832 gregs = va_arg (ap, const void *);
3833 va_end (ap);
3834
3835 bfd_put_16 (abfd, cursig, data + 12);
3836 bfd_put_32 (abfd, pid, data + 32);
3837 memcpy (data + 112, gregs, 216);
3838 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3839 &data, sizeof (data));
3840 }
3841 }
3842 /* NOTREACHED */
3843}
3844\f
4c45e5c9
JJ		 3845/* Return address for Ith PLT stub in section PLT, for relocation REL
3846 or (bfd_vma) -1 if it should not be included. */
3847
3848static bfd_vma
3849elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3850 const arelent *rel ATTRIBUTE_UNUSED)
3851{
3852 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3853}
3854
643f7afb
AK		 3855/* Merge backend specific data from an object file to the output
3856 object file when linking. */
3857
3858static bfd_boolean
50e03d47 3859elf64_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
643f7afb 3860{
50e03d47 3861 if (!is_s390_elf (ibfd) || !is_s390_elf (info->output_bfd))
643f7afb
AK		 3862 return TRUE;
3863
50e03d47 3864 return elf_s390_merge_obj_attributes (ibfd, info);
643f7afb
AK		 3865}
3866
b4cbbe8f
AK		 3867/* We may add a PT_S390_PGSTE program header. */
3868
3869static int
3870elf_s390_additional_program_headers (bfd *abfd ATTRIBUTE_UNUSED,
3871 struct bfd_link_info *info)
3872{
3873 struct elf_s390_link_hash_table *htab;
3874
93ec5e23
AK		 3875 if (info)
3876 {
3877 htab = elf_s390_hash_table (info);
3878 if (htab)
3879 return htab->params->pgste;
3880 }
3881 return 0;
b4cbbe8f
AK		 3882}
3883
3884
3885/* Add the PT_S390_PGSTE program header. */
3886
3887static bfd_boolean
93ec5e23 3888elf_s390_modify_segment_map (bfd *abfd, struct bfd_link_info *info)
b4cbbe8f
AK		 3889{
3890 struct elf_s390_link_hash_table *htab;
3891 struct elf_segment_map *m, *pm = NULL;
3892
93ec5e23
AK		 3893 if (!abfd || !info)
3894 return TRUE;
3895
b4cbbe8f 3896 htab = elf_s390_hash_table (info);
93ec5e23 3897 if (!htab || !htab->params->pgste)
b4cbbe8f
AK		 3898 return TRUE;
3899
3900 /* If there is already a PT_S390_PGSTE header, avoid adding
3901 another. */
3902 m = elf_seg_map (abfd);
3903 while (m && m->p_type != PT_S390_PGSTE)
3904 {
3905 pm = m;
3906 m = m->next;
3907 }
3908
3909 if (m)
3910 return TRUE;
3911
3912 m = (struct elf_segment_map *)
3913 bfd_zalloc (abfd, sizeof (struct elf_segment_map));
3914 if (m == NULL)
3915 return FALSE;
3916 m->p_type = PT_S390_PGSTE;
3917 m->count = 0;
3918 m->next = NULL;
3919 if (pm)
3920 pm->next = m;
3921
3922 return TRUE;
3923}
3924
3925bfd_boolean
3926bfd_elf_s390_set_options (struct bfd_link_info *info,
3927 struct s390_elf_params *params)
3928{
3929 struct elf_s390_link_hash_table *htab;
3930
93ec5e23
AK		 3931 if (info)
3932 {
3933 htab = elf_s390_hash_table (info);
3934 if (htab)
3935 htab->params = params;
3936 }
b4cbbe8f
AK		 3937
3938 return TRUE;
3939}
3940
3941
ae9a127f
NC		 3942/* Why was the hash table entry size definition changed from
3943 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3944 this is the only reason for the s390_elf64_size_info structure. */
a85d7ed0
NC		 3945
3946const struct elf_size_info s390_elf64_size_info =
3947{
3948 sizeof (Elf64_External_Ehdr),
3949 sizeof (Elf64_External_Phdr),
3950 sizeof (Elf64_External_Shdr),
3951 sizeof (Elf64_External_Rel),
3952 sizeof (Elf64_External_Rela),
3953 sizeof (Elf64_External_Sym),
3954 sizeof (Elf64_External_Dyn),
3955 sizeof (Elf_External_Note),
ae9a127f
NC		 3956 8, /* hash-table entry size. */
3957 1, /* internal relocations per external relocations. */
3958 64, /* arch_size. */
45d6a902 3959 3, /* log_file_align. */
a85d7ed0
NC		 3960 ELFCLASS64, EV_CURRENT,
3961 bfd_elf64_write_out_phdrs,
3962 bfd_elf64_write_shdrs_and_ehdr,
1489a3a0 3963 bfd_elf64_checksum_contents,
a85d7ed0 3964 bfd_elf64_write_relocs,
73ff0d56 3965 bfd_elf64_swap_symbol_in,
a85d7ed0
NC		 3966 bfd_elf64_swap_symbol_out,
3967 bfd_elf64_slurp_reloc_table,
3968 bfd_elf64_slurp_symbol_table,
3969 bfd_elf64_swap_dyn_in,
3970 bfd_elf64_swap_dyn_out,
947216bf
AM		 3971 bfd_elf64_swap_reloc_in,
3972 bfd_elf64_swap_reloc_out,
3973 bfd_elf64_swap_reloca_in,
3974 bfd_elf64_swap_reloca_out
a85d7ed0
NC		 3975};
3976
6d00b590 3977#define TARGET_BIG_SYM s390_elf64_vec
a85d7ed0
NC		 3978#define TARGET_BIG_NAME "elf64-s390"
3979#define ELF_ARCH bfd_arch_s390
ae95ffa6 3980#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 3981#define ELF_MACHINE_CODE EM_S390
3982#define ELF_MACHINE_ALT1 EM_S390_OLD
3983#define ELF_MAXPAGESIZE 0x1000
3984
3985#define elf_backend_size_info s390_elf64_size_info
3986
3987#define elf_backend_can_gc_sections 1
51b64d56 3988#define elf_backend_can_refcount 1
a85d7ed0
NC		 3989#define elf_backend_want_got_plt 1
3990#define elf_backend_plt_readonly 1
3991#define elf_backend_want_plt_sym 0
3992#define elf_backend_got_header_size 24
5474d94f 3993#define elf_backend_want_dynrelro 1
b491616a 3994#define elf_backend_rela_normal 1
a85d7ed0
NC		 3995
3996#define elf_info_to_howto elf_s390_info_to_howto
3997
a85d7ed0
NC		 3998#define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3999#define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
4000#define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
07d6d2b8 4001#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
643f7afb 4002#define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
a85d7ed0
NC		 4003
4004#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
4005#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c 4006#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
9d19e4fd 4007#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
a85d7ed0
NC		 4008#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4009#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
4010#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
0451c93c 4011#define elf_backend_reloc_type_class elf_s390_reloc_type_class
a85d7ed0
NC		 4012#define elf_backend_relocate_section elf_s390_relocate_section
4013#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 4014#define elf_backend_init_index_section _bfd_elf_init_1_index_section
e3e9290d
AA		 4015#define elf_backend_grok_prstatus elf_s390_grok_prstatus
4016#define elf_backend_grok_psinfo elf_s390_grok_psinfo
4017#define elf_backend_write_core_note elf_s390_write_core_note
4c45e5c9 4018#define elf_backend_plt_sym_val elf_s390_plt_sym_val
07d6d2b8 4019#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
b4cbbe8f
AK		 4020#define elf_backend_additional_program_headers elf_s390_additional_program_headers
4021#define elf_backend_modify_segment_map elf_s390_modify_segment_map
a85d7ed0 4022
69fc87f1
MS		 4023#define bfd_elf64_mkobject elf_s390_mkobject
4024#define elf_backend_object_p elf_s390_object_p
a85d7ed0
NC		 4025
4026#include "elf64-target.h"
GDB Binutils - Deliverables
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