projects / deliverable / binutils-gdb.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
gdb/riscv: Remove CSR feature file
[deliverable/binutils-gdb.git] / bfd / elf32-s390.c
CommitLineData
a85d7ed0 1/* IBM S/390-specific support for 32-bit ELF
b3adc24a 2 Copyright (C) 2000-2020 Free Software Foundation, Inc.
a85d7ed0
NC		 3 Contributed by Carl B. Pedersen and Martin Schwidefsky.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
a85d7ed0
NC		 10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
3e110533 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
53e09e0a 20 02110-1301, USA. */
a85d7ed0 21
a85d7ed0 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
a85d7ed0
NC		 24#include "bfdlink.h"
25#include "libbfd.h"
26#include "elf-bfd.h"
a85d7ed0 27#include "elf/s390.h"
e3e9290d 28#include <stdarg.h>
a85d7ed0 29
2c3fc389
NC		 30static bfd_reloc_status_type
31s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
32 asection *, bfd *, char **);
33static bfd_reloc_status_type
34s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
35 asection *, bfd *, char **);
36
a85d7ed0
NC		 37/* The relocation "howto" table. */
38
39static reloc_howto_type elf_howto_table[] =
40{
41 HOWTO (R_390_NONE, /* type */
42 0, /* rightshift */
6346d5ca 43 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
a85d7ed0 44 0, /* bitsize */
b34976b6 45 FALSE, /* pc_relative */
a85d7ed0
NC		 46 0, /* bitpos */
47 complain_overflow_dont, /* complain_on_overflow */
48 bfd_elf_generic_reloc, /* special_function */
49 "R_390_NONE", /* name */
b34976b6 50 FALSE, /* partial_inplace */
a85d7ed0
NC		 51 0, /* src_mask */
52 0, /* dst_mask */
b34976b6
AM		 53 FALSE), /* pcrel_offset */
54
07d6d2b8
AM		 55 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
56 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
57 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
58 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
59 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
60 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
61 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
62 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
5236c819 63 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8 64 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
15f8604d 65 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
07d6d2b8 66 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
5236c819 67 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
07d6d2b8 68 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
5236c819 69 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8
AM		 70 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
71 HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
72 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
73 HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
5236c819 74 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
07d6d2b8 75 HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
5236c819 76 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
07d6d2b8 77 HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
5236c819 78 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
07d6d2b8 79 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
5236c819 80 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
07d6d2b8
AM		 81 HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
82 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
83 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
84 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
85 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
86 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
87 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
88 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
89 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
5236c819
MS		 90 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
91 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8 92 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
5236c819
MS		 93 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
94 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
07d6d2b8 95 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
5236c819
MS		 96 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
97 EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
98 EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
99 EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
100 EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
101 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
07d6d2b8
AM		 102 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
103 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 104 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
105 EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
07d6d2b8 106 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
5236c819 107 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
07d6d2b8 108 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
5236c819 109 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
07d6d2b8 110 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 111 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
112 EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
113 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
114 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE),
07d6d2b8 115 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
5236c819 116 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
07d6d2b8 117 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 118 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
119 EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
69fc87f1
MS		 120 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
121 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
122 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
123 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
124 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
125 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
126 HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE),
128 EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */
129 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
130 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
131 HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
132 bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE),
133 EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */
134 HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
135 bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE),
136 EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */
137 HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE),
139 EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */
140 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
141 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE),
142 HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
143 bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE),
144 EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */
145 HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE),
147 EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */
148 HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE),
150 HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE),
152 HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
153 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE),
07d6d2b8 154 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
bd1ea41b
MS		 155 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
156 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
157 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
07d6d2b8 158 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
bd1ea41b
MS		 159 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
160 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
161 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
470b557a
AK		 162 HOWTO(R_390_IRELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, 0xffffffff, FALSE),
07d6d2b8
AM		 164 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
165 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
fb798c50
AK		 166 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
167 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
07d6d2b8
AM		 168 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
169 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
fb798c50
AK		 170 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
171 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
a85d7ed0
NC		 172};
173
174/* GNU extension to record C++ vtable hierarchy. */
175static reloc_howto_type elf32_s390_vtinherit_howto =
b34976b6 176 HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
a85d7ed0 177static reloc_howto_type elf32_s390_vtentry_howto =
b34976b6 178 HOWTO (R_390_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
a85d7ed0
NC		 179
180static reloc_howto_type *
2c3fc389
NC		 181elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
182 bfd_reloc_code_real_type code)
a85d7ed0 183{
ec338859 184 switch (code)
0451c93c
MS		 185 {
186 case BFD_RELOC_NONE:
187 return &elf_howto_table[(int) R_390_NONE];
188 case BFD_RELOC_8:
189 return &elf_howto_table[(int) R_390_8];
190 case BFD_RELOC_390_12:
191 return &elf_howto_table[(int) R_390_12];
192 case BFD_RELOC_16:
193 return &elf_howto_table[(int) R_390_16];
194 case BFD_RELOC_32:
195 return &elf_howto_table[(int) R_390_32];
196 case BFD_RELOC_CTOR:
197 return &elf_howto_table[(int) R_390_32];
198 case BFD_RELOC_32_PCREL:
199 return &elf_howto_table[(int) R_390_PC32];
200 case BFD_RELOC_390_GOT12:
201 return &elf_howto_table[(int) R_390_GOT12];
202 case BFD_RELOC_32_GOT_PCREL:
203 return &elf_howto_table[(int) R_390_GOT32];
204 case BFD_RELOC_390_PLT32:
205 return &elf_howto_table[(int) R_390_PLT32];
206 case BFD_RELOC_390_COPY:
207 return &elf_howto_table[(int) R_390_COPY];
208 case BFD_RELOC_390_GLOB_DAT:
209 return &elf_howto_table[(int) R_390_GLOB_DAT];
210 case BFD_RELOC_390_JMP_SLOT:
211 return &elf_howto_table[(int) R_390_JMP_SLOT];
212 case BFD_RELOC_390_RELATIVE:
213 return &elf_howto_table[(int) R_390_RELATIVE];
214 case BFD_RELOC_32_GOTOFF:
5236c819 215 return &elf_howto_table[(int) R_390_GOTOFF32];
0451c93c
MS		 216 case BFD_RELOC_390_GOTPC:
217 return &elf_howto_table[(int) R_390_GOTPC];
218 case BFD_RELOC_390_GOT16:
219 return &elf_howto_table[(int) R_390_GOT16];
220 case BFD_RELOC_16_PCREL:
221 return &elf_howto_table[(int) R_390_PC16];
fb798c50
AK		 222 case BFD_RELOC_390_PC12DBL:
223 return &elf_howto_table[(int) R_390_PC12DBL];
224 case BFD_RELOC_390_PLT12DBL:
225 return &elf_howto_table[(int) R_390_PLT12DBL];
0451c93c
MS		 226 case BFD_RELOC_390_PC16DBL:
227 return &elf_howto_table[(int) R_390_PC16DBL];
228 case BFD_RELOC_390_PLT16DBL:
229 return &elf_howto_table[(int) R_390_PLT16DBL];
fb798c50
AK		 230 case BFD_RELOC_390_PC24DBL:
231 return &elf_howto_table[(int) R_390_PC24DBL];
232 case BFD_RELOC_390_PLT24DBL:
233 return &elf_howto_table[(int) R_390_PLT24DBL];
befc3abb
MS		 234 case BFD_RELOC_390_PC32DBL:
235 return &elf_howto_table[(int) R_390_PC32DBL];
236 case BFD_RELOC_390_PLT32DBL:
237 return &elf_howto_table[(int) R_390_PLT32DBL];
238 case BFD_RELOC_390_GOTPCDBL:
239 return &elf_howto_table[(int) R_390_GOTPCDBL];
240 case BFD_RELOC_390_GOTENT:
241 return &elf_howto_table[(int) R_390_GOTENT];
5236c819
MS		 242 case BFD_RELOC_16_GOTOFF:
243 return &elf_howto_table[(int) R_390_GOTOFF16];
244 case BFD_RELOC_390_GOTPLT12:
245 return &elf_howto_table[(int) R_390_GOTPLT12];
246 case BFD_RELOC_390_GOTPLT16:
247 return &elf_howto_table[(int) R_390_GOTPLT16];
248 case BFD_RELOC_390_GOTPLT32:
249 return &elf_howto_table[(int) R_390_GOTPLT32];
250 case BFD_RELOC_390_GOTPLTENT:
251 return &elf_howto_table[(int) R_390_GOTPLTENT];
252 case BFD_RELOC_390_PLTOFF16:
253 return &elf_howto_table[(int) R_390_PLTOFF16];
254 case BFD_RELOC_390_PLTOFF32:
255 return &elf_howto_table[(int) R_390_PLTOFF32];
69fc87f1
MS		 256 case BFD_RELOC_390_TLS_LOAD:
257 return &elf_howto_table[(int) R_390_TLS_LOAD];
258 case BFD_RELOC_390_TLS_GDCALL:
259 return &elf_howto_table[(int) R_390_TLS_GDCALL];
260 case BFD_RELOC_390_TLS_LDCALL:
261 return &elf_howto_table[(int) R_390_TLS_LDCALL];
262 case BFD_RELOC_390_TLS_GD32:
263 return &elf_howto_table[(int) R_390_TLS_GD32];
264 case BFD_RELOC_390_TLS_GOTIE12:
265 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
266 case BFD_RELOC_390_TLS_GOTIE32:
267 return &elf_howto_table[(int) R_390_TLS_GOTIE32];
268 case BFD_RELOC_390_TLS_LDM32:
269 return &elf_howto_table[(int) R_390_TLS_LDM32];
270 case BFD_RELOC_390_TLS_IE32:
271 return &elf_howto_table[(int) R_390_TLS_IE32];
272 case BFD_RELOC_390_TLS_IEENT:
273 return &elf_howto_table[(int) R_390_TLS_IEENT];
274 case BFD_RELOC_390_TLS_LE32:
275 return &elf_howto_table[(int) R_390_TLS_LE32];
276 case BFD_RELOC_390_TLS_LDO32:
277 return &elf_howto_table[(int) R_390_TLS_LDO32];
278 case BFD_RELOC_390_TLS_DTPMOD:
279 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
280 case BFD_RELOC_390_TLS_DTPOFF:
281 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
282 case BFD_RELOC_390_TLS_TPOFF:
283 return &elf_howto_table[(int) R_390_TLS_TPOFF];
bd1ea41b
MS		 284 case BFD_RELOC_390_20:
285 return &elf_howto_table[(int) R_390_20];
286 case BFD_RELOC_390_GOT20:
287 return &elf_howto_table[(int) R_390_GOT20];
288 case BFD_RELOC_390_GOTPLT20:
289 return &elf_howto_table[(int) R_390_GOTPLT20];
290 case BFD_RELOC_390_TLS_GOTIE20:
291 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
470b557a
AK		 292 case BFD_RELOC_390_IRELATIVE:
293 return &elf_howto_table[(int) R_390_IRELATIVE];
0451c93c
MS		 294 case BFD_RELOC_VTABLE_INHERIT:
295 return &elf32_s390_vtinherit_howto;
296 case BFD_RELOC_VTABLE_ENTRY:
297 return &elf32_s390_vtentry_howto;
298 default:
299 break;
300 }
a85d7ed0
NC		 301 return 0;
302}
303
157090f7
AM		 304static reloc_howto_type *
305elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
306 const char *r_name)
307{
308 unsigned int i;
309
310 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
311 if (elf_howto_table[i].name != NULL
312 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
313 return &elf_howto_table[i];
314
315 if (strcasecmp (elf32_s390_vtinherit_howto.name, r_name) == 0)
316 return &elf32_s390_vtinherit_howto;
317 if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0)
318 return &elf32_s390_vtentry_howto;
319
320 return NULL;
321}
322
a85d7ed0
NC		 323/* We need to use ELF32_R_TYPE so we have our own copy of this function,
324 and elf32-s390.c has its own copy. */
325
f3185997
NC		 326static bfd_boolean
327elf_s390_info_to_howto (bfd *abfd,
2c3fc389
NC		 328 arelent *cache_ptr,
329 Elf_Internal_Rela *dst)
a85d7ed0 330{
d0fb9a8d 331 unsigned int r_type = ELF32_R_TYPE(dst->r_info);
f3185997 332
d0fb9a8d 333 switch (r_type)
a85d7ed0
NC		 334 {
335 case R_390_GNU_VTINHERIT:
336 cache_ptr->howto = &elf32_s390_vtinherit_howto;
337 break;
338
339 case R_390_GNU_VTENTRY:
340 cache_ptr->howto = &elf32_s390_vtentry_howto;
341 break;
342
343 default:
d0fb9a8d
JJ		 344 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
345 {
695344c0 346 /* xgettext:c-format */
0aa13fee
AM		 347 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
348 abfd, r_type);
f3185997
NC		 349 bfd_set_error (bfd_error_bad_value);
350 return FALSE;
d0fb9a8d
JJ		 351 }
352 cache_ptr->howto = &elf_howto_table[r_type];
dc810e39 353 }
f3185997
NC		 354
355 return TRUE;
a85d7ed0
NC		 356}
357
69fc87f1
MS		 358/* A relocation function which doesn't do anything. */
359static bfd_reloc_status_type
2c3fc389
NC		 360s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
361 arelent *reloc_entry,
362 asymbol *symbol ATTRIBUTE_UNUSED,
363 void * data ATTRIBUTE_UNUSED,
364 asection *input_section,
365 bfd *output_bfd,
366 char **error_message ATTRIBUTE_UNUSED)
69fc87f1
MS		 367{
368 if (output_bfd)
369 reloc_entry->address += input_section->output_offset;
370 return bfd_reloc_ok;
371}
372
bd1ea41b
MS		 373/* Handle the large displacement relocs. */
374static bfd_reloc_status_type
2c3fc389
NC		 375s390_elf_ldisp_reloc (bfd *abfd ATTRIBUTE_UNUSED,
376 arelent *reloc_entry,
377 asymbol *symbol,
378 void * data ATTRIBUTE_UNUSED,
379 asection *input_section,
380 bfd *output_bfd,
381 char **error_message ATTRIBUTE_UNUSED)
bd1ea41b
MS		 382{
383 reloc_howto_type *howto = reloc_entry->howto;
384 bfd_vma relocation;
385 bfd_vma insn;
68ffbac6 386
bd1ea41b
MS		 387 if (output_bfd != (bfd *) NULL
388 && (symbol->flags & BSF_SECTION_SYM) == 0
389 && (! howto->partial_inplace
390 || reloc_entry->addend == 0))
391 {
392 reloc_entry->address += input_section->output_offset;
393 return bfd_reloc_ok;
394 }
68ffbac6 395
bd1ea41b
MS		 396 if (output_bfd != NULL)
397 return bfd_reloc_continue;
68ffbac6 398
07515404 399 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b 400 return bfd_reloc_outofrange;
68ffbac6 401
bd1ea41b
MS		 402 relocation = (symbol->value
403 + symbol->section->output_section->vma
404 + symbol->section->output_offset);
405 relocation += reloc_entry->addend;
406 if (howto->pc_relative)
407 {
408 relocation -= (input_section->output_section->vma
409 + input_section->output_offset);
410 relocation -= reloc_entry->address;
411 }
68ffbac6 412
bd1ea41b
MS		 413 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
414 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
415 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
68ffbac6 416
bd1ea41b
MS		 417 if ((bfd_signed_vma) relocation < - 0x80000
418 || (bfd_signed_vma) relocation > 0x7ffff)
419 return bfd_reloc_overflow;
420 else
421 return bfd_reloc_ok;
422}
423
b34976b6 424static bfd_boolean
2c3fc389 425elf_s390_is_local_label_name (bfd *abfd, const char *name)
a85d7ed0
NC		 426{
427 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 428 return TRUE;
a85d7ed0
NC		 429
430 return _bfd_elf_is_local_label_name (abfd, name);
431}
432
433/* Functions for the 390 ELF linker. */
434
435/* The name of the dynamic interpreter. This is put in the .interp
436 section. */
437
87049b0d 438#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
a85d7ed0 439
64285810
MS		 440/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
441 copying dynamic variables from a shared lib into an app's dynbss
442 section, and instead use a dynamic relocation to point into the
443 shared lib. */
444#define ELIMINATE_COPY_RELOCS 1
445
a85d7ed0
NC		 446/* The size in bytes of the first entry in the procedure linkage table. */
447#define PLT_FIRST_ENTRY_SIZE 32
448/* The size in bytes of an entry in the procedure linkage table. */
dc810e39 449#define PLT_ENTRY_SIZE 32
a85d7ed0
NC		 450
451#define GOT_ENTRY_SIZE 4
452
470b557a
AK		 453#define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela)
454
a85d7ed0
NC		 455/* The first three entries in a procedure linkage table are reserved,
456 and the initial contents are unimportant (we zero them out).
457 Subsequent entries look like this. See the SVR4 ABI 386
458 supplement to see how this works. */
459
460/* For the s390, simple addr offset can only be 0 - 4096.
461 To use the full 2 GB address space, several instructions
462 are needed to load an address in a register and execute
463 a branch( or just saving the address)
464
dc810e39 465 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC		 466
467/* The first 3 words in the GOT are then reserved.
468 Word 0 is the address of the dynamic table.
469 Word 1 is a pointer to a structure describing the object
470 Word 2 is used to point to the loader entry address.
471
4cc11e76 472 The code for position independent PLT entries looks like this:
a85d7ed0
NC		 473
474 r12 holds addr of the current GOT at entry to the PLT
475
476 The GOT holds the address in the PLT to be executed.
477 The loader then gets:
478 24(15) = Pointer to the structure describing the object.
a7e28bbe 479 28(15) = Offset into rela.plt
a85d7ed0
NC		 480
481 The loader must then find the module where the function is
482 and insert the address in the GOT.
483
484 Note: 390 can only address +- 64 K relative.
07d6d2b8
AM		 485 We check if offset > 65536, then make a relative branch -64xxx
486 back to a previous defined branch
487
488PLT1: BASR 1,0 # 2 bytes
489 L 1,22(1) # 4 bytes Load offset in GOT in r 1
490 L 1,(1,12) # 4 bytes Load address from GOT in r1
491 BCR 15,1 # 2 bytes Jump to address
492RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
493 L 1,14(1) # 4 bytes Load offset in symol table in r1
a85d7ed0 494 BRC 15,-x # 4 bytes Jump to start of PLT
07d6d2b8
AM		 495 .word 0 # 2 bytes filler
496 .long ? # 4 bytes offset in GOT
497 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 498
499 This was the general case. There are two additional, optimizes PLT
500 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
501 First the one for GOT offsets < 4096:
502
07d6d2b8
AM		 503PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
504 BCR 15,1 # 2 bytes Jump to address
505 .word 0,0,0 # 6 bytes filler
506RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
507 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
508 BRC 15,-x # 4 bytes Jump to start of PLT
509 .word 0,0,0 # 6 bytes filler
510 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 511
512 Second the one for GOT offsets < 32768:
513
07d6d2b8
AM		 514PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
515 L 1,(1,12) # 4 bytes Load address from GOT to r1
516 BCR 15,1 # 2 bytes Jump to address
517 .word 0 # 2 bytes filler
518RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
519 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
520 BRC 15,-x # 4 bytes Jump to start of PLT
521 .word 0,0,0 # 6 bytes filler
522 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 523
524Total = 32 bytes per PLT entry
525
526 The code for static build PLT entries looks like this:
527
07d6d2b8
AM		 528PLT1: BASR 1,0 # 2 bytes
529 L 1,22(1) # 4 bytes Load address of GOT entry
530 L 1,0(0,1) # 4 bytes Load address from GOT in r1
531 BCR 15,1 # 2 bytes Jump to address
532RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
533 L 1,14(1) # 4 bytes Load offset in symbol table in r1
a85d7ed0 534 BRC 15,-x # 4 bytes Jump to start of PLT
07d6d2b8
AM		 535 .word 0 # 2 bytes filler
536 .long ? # 4 bytes address of GOT entry
537 .long ? # 4 bytes offset into rela.plt */
a85d7ed0 538
9aa17453
AK		 539static const bfd_byte elf_s390_plt_entry[PLT_ENTRY_SIZE] =
540 {
07d6d2b8
AM		 541 0x0d, 0x10, /* basr %r1,%r0 */
542 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
543 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */
544 0x07, 0xf1, /* br %r1 */
545 0x0d, 0x10, /* basr %r1,%r0 */
546 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
547 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
548 0x00, 0x00, /* padding */
549 0x00, 0x00, 0x00, 0x00, /* GOT offset */
550 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
9aa17453
AK		 551 };
552
553/* Generic PLT pic entry. */
554static const bfd_byte elf_s390_plt_pic_entry[PLT_ENTRY_SIZE] =
555 {
07d6d2b8
AM		 556 0x0d, 0x10, /* basr %r1,%r0 */
557 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
558 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
559 0x07, 0xf1, /* br %r1 */
560 0x0d, 0x10, /* basr %r1,%r0 */
561 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
562 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
563 0x00, 0x00, /* padding */
564 0x00, 0x00, 0x00, 0x00, /* GOT offset */
565 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
9aa17453
AK		 566 };
567
568/* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced
569 when generating the PLT slot with the GOT offset. */
570static const bfd_byte elf_s390_plt_pic12_entry[PLT_ENTRY_SIZE] =
571 {
07d6d2b8
AM		 572 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */
573 0x07, 0xf1, /* br %r1 */
574 0x00, 0x00, 0x00, 0x00, /* padding */
9aa17453 575 0x00, 0x00,
07d6d2b8
AM		 576 0x0d, 0x10, /* basr %r1,%r0 */
577 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
578 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
9aa17453
AK		 579 0x00, 0x00, 0x00, 0x00,
580 0x00, 0x00, 0x00, 0x00
581 };
582
583/* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced
584 when generating the PLT slot with the GOT offset. */
585static const bfd_byte elf_s390_plt_pic16_entry[PLT_ENTRY_SIZE] =
586 {
07d6d2b8
AM		 587 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */
588 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
589 0x07, 0xf1, /* br %r1 */
9aa17453 590 0x00, 0x00,
07d6d2b8
AM		 591 0x0d, 0x10, /* basr %r1,%r0 */
592 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
593 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
9aa17453
AK		 594 0x00, 0x00, 0x00, 0x00,
595 0x00, 0x00, 0x00, 0x00,
596 0x00, 0x00
597 };
a85d7ed0 598
a7e28bbe 599/* The first PLT entry pushes the offset into the rela.plt
a85d7ed0
NC		 600 from R1 onto the stack at 8(15) and the loader object info
601 at 12(15), loads the loader address in R1 and jumps to it. */
602
603/* The first entry in the PLT for PIC code:
604
605PLT0:
07d6d2b8
AM		 606 ST 1,28(15) # R1 has offset into rela.plt
607 L 1,4(12) # Get loader ino(object struct address)
608 ST 1,24(15) # Store address
609 L 1,8(12) # Entry address of loader in R1
610 BR 1 # Jump to loader
a85d7ed0
NC		 611
612 The first entry in the PLT for static code:
613
614PLT0:
07d6d2b8 615 ST 1,28(15) # R1 has offset into rela.plt
a85d7ed0 616 BASR 1,0
07d6d2b8
AM		 617 L 1,18(0,1) # Get address of GOT
618 MVC 24(4,15),4(1) # Move loader ino to stack
619 L 1,8(1) # Get address of loader
620 BR 1 # Jump to loader
621 .word 0 # filler
622 .long got # address of GOT */
a85d7ed0 623
9aa17453
AK		 624static const bfd_byte elf_s390_plt_first_entry[PLT_FIRST_ENTRY_SIZE] =
625 {
07d6d2b8
AM		 626 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
627 0x0d, 0x10, /* basr %r1,%r0 */
628 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */
629 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */
630 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */
631 0x07, 0xf1, /* br %r1 */
9aa17453
AK		 632 0x00, 0x00, 0x00, 0x00,
633 0x00, 0x00, 0x00, 0x00,
634 0x00, 0x00
635 };
636
637static const bfd_byte elf_s390_plt_pic_first_entry[PLT_FIRST_ENTRY_SIZE] =
638 {
07d6d2b8
AM		 639 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
640 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */
641 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */
642 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */
643 0x07, 0xf1, /* br %r1 */
9aa17453
AK		 644 0x00, 0x00, 0x00, 0x00,
645 0x00, 0x00, 0x00, 0x00,
646 0x00, 0x00, 0x00, 0x00,
647 0x00, 0x00
648 };
a85d7ed0 649
a85d7ed0
NC		 650
651/* s390 ELF linker hash entry. */
652
653struct elf_s390_link_hash_entry
654{
0451c93c 655 struct elf_link_hash_entry elf;
a85d7ed0 656
5236c819
MS		 657 /* Number of GOTPLT references for a function. */
658 bfd_signed_vma gotplt_refcount;
69fc87f1
MS		 659
660#define GOT_UNKNOWN 0
661#define GOT_NORMAL 1
662#define GOT_TLS_GD 2
663#define GOT_TLS_IE 3
664#define GOT_TLS_IE_NLT 4
665 unsigned char tls_type;
470b557a
AK		 666
667 /* For pointer equality reasons we might need to change the symbol
668 type from STT_GNU_IFUNC to STT_FUNC together with its value and
669 section entry. So after alloc_dynrelocs only these values should
670 be used. In order to check whether a symbol is IFUNC use
671 s390_is_ifunc_symbol_p. */
672 bfd_vma ifunc_resolver_address;
673 asection *ifunc_resolver_section;
a85d7ed0
NC		 674};
675
69fc87f1
MS		 676#define elf_s390_hash_entry(ent) \
677 ((struct elf_s390_link_hash_entry *)(ent))
678
470b557a
AK		 679/* This structure represents an entry in the local PLT list needed for
680 local IFUNC symbols. */
681struct plt_entry
682{
683 /* The section of the local symbol.
684 Set in relocate_section and used in finish_dynamic_sections. */
685 asection *sec;
686
687 union
688 {
689 bfd_signed_vma refcount;
690 bfd_vma offset;
691 } plt;
692};
693
0ffa91dd
NC		 694/* NOTE: Keep this structure in sync with
695 the one declared in elf64-s390.c. */
69fc87f1
MS		 696struct elf_s390_obj_tdata
697{
698 struct elf_obj_tdata root;
699
470b557a
AK		 700 /* A local PLT is needed for ifunc symbols. */
701 struct plt_entry *local_plt;
702
0ffa91dd 703 /* TLS type for each local got entry. */
69fc87f1
MS		 704 char *local_got_tls_type;
705};
706
707#define elf_s390_tdata(abfd) \
708 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
709
470b557a
AK		 710#define elf_s390_local_plt(abfd) \
711 (elf_s390_tdata (abfd)->local_plt)
712
69fc87f1
MS		 713#define elf_s390_local_got_tls_type(abfd) \
714 (elf_s390_tdata (abfd)->local_got_tls_type)
715
0ffa91dd
NC		 716#define is_s390_elf(bfd) \
717 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
718 && elf_tdata (bfd) != NULL \
4dfe6ac6 719 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 720
69fc87f1 721static bfd_boolean
62d7a5f6 722elf_s390_mkobject (bfd *abfd)
69fc87f1 723{
0ffa91dd 724 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 725 S390_ELF_DATA);
69fc87f1
MS		 726}
727
728static bfd_boolean
2c3fc389 729elf_s390_object_p (bfd *abfd)
69fc87f1 730{
69fc87f1
MS		 731 /* Set the right machine number for an s390 elf32 file. */
732 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
733}
734
a85d7ed0
NC		 735/* s390 ELF linker hash table. */
736
737struct elf_s390_link_hash_table
738{
0451c93c 739 struct elf_link_hash_table elf;
a85d7ed0 740
0451c93c 741 /* Short-cuts to get to dynamic linker sections. */
470b557a 742 asection *irelifunc;
ec338859 743
2c3fc389
NC		 744 union
745 {
69fc87f1
MS		 746 bfd_signed_vma refcount;
747 bfd_vma offset;
748 } tls_ldm_got;
749
87d72d41
AM		 750 /* Small local sym cache. */
751 struct sym_cache sym_cache;
0451c93c 752};
a85d7ed0
NC		 753
754/* Get the s390 ELF linker hash table from a link_info structure. */
755
756#define elf_s390_hash_table(p) \
4dfe6ac6
NC		 757 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
758 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
a85d7ed0 759
470b557a
AK		 760#undef ELF64
761#include "elf-s390-common.c"
762
a85d7ed0
NC		 763/* Create an entry in an s390 ELF linker hash table. */
764
765static struct bfd_hash_entry *
2c3fc389
NC		 766link_hash_newfunc (struct bfd_hash_entry *entry,
767 struct bfd_hash_table *table,
768 const char *string)
a85d7ed0 769{
a85d7ed0
NC		 770 /* Allocate the structure if it has not already been allocated by a
771 subclass. */
0451c93c
MS		 772 if (entry == NULL)
773 {
774 entry = bfd_hash_allocate (table,
775 sizeof (struct elf_s390_link_hash_entry));
776 if (entry == NULL)
777 return entry;
778 }
ec338859 779
a85d7ed0 780 /* Call the allocation method of the superclass. */
0451c93c
MS		 781 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
782 if (entry != NULL)
a85d7ed0 783 {
0451c93c 784 struct elf_s390_link_hash_entry *eh;
ec338859 785
0451c93c 786 eh = (struct elf_s390_link_hash_entry *) entry;
5236c819 787 eh->gotplt_refcount = 0;
69fc87f1 788 eh->tls_type = GOT_UNKNOWN;
470b557a
AK		 789 eh->ifunc_resolver_address = 0;
790 eh->ifunc_resolver_section = NULL;
a85d7ed0
NC		 791 }
792
0451c93c 793 return entry;
a85d7ed0
NC		 794}
795
796/* Create an s390 ELF linker hash table. */
797
798static struct bfd_link_hash_table *
2c3fc389 799elf_s390_link_hash_table_create (bfd *abfd)
a85d7ed0
NC		 800{
801 struct elf_s390_link_hash_table *ret;
986f0783 802 size_t amt = sizeof (struct elf_s390_link_hash_table);
a85d7ed0 803
7bf52ea2 804 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
0451c93c 805 if (ret == NULL)
a85d7ed0
NC		 806 return NULL;
807
66eb6687 808 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 809 sizeof (struct elf_s390_link_hash_entry),
810 S390_ELF_DATA))
a85d7ed0 811 {
e2d34d7d 812 free (ret);
a85d7ed0
NC		 813 return NULL;
814 }
815
0451c93c
MS		 816 return &ret->elf.root;
817}
818
0451c93c
MS		 819/* Copy the extra info we tack onto an elf_link_hash_entry. */
820
821static void
2c3fc389
NC		 822elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
823 struct elf_link_hash_entry *dir,
824 struct elf_link_hash_entry *ind)
0451c93c
MS		 825{
826 struct elf_s390_link_hash_entry *edir, *eind;
827
828 edir = (struct elf_s390_link_hash_entry *) dir;
829 eind = (struct elf_s390_link_hash_entry *) ind;
830
69fc87f1
MS		 831 if (ind->root.type == bfd_link_hash_indirect
832 && dir->got.refcount <= 0)
833 {
834 edir->tls_type = eind->tls_type;
835 eind->tls_type = GOT_UNKNOWN;
836 }
837
64285810
MS		 838 if (ELIMINATE_COPY_RELOCS
839 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 840 && dir->dynamic_adjusted)
841 {
842 /* If called to transfer flags for a weakdef during processing
843 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
844 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
e81830c5
AM		 845 if (dir->versioned != versioned_hidden)
846 dir->ref_dynamic |= ind->ref_dynamic;
f5385ebf
AM		 847 dir->ref_regular |= ind->ref_regular;
848 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
849 dir->needs_plt |= ind->needs_plt;
850 }
64285810 851 else
fcfa13d2 852 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 853}
a85d7ed0 854
69fc87f1 855static int
2c3fc389
NC		 856elf_s390_tls_transition (struct bfd_link_info *info,
857 int r_type,
858 int is_local)
69fc87f1 859{
0e1862bb 860 if (bfd_link_pic (info))
69fc87f1
MS		 861 return r_type;
862
863 switch (r_type)
864 {
865 case R_390_TLS_GD32:
866 case R_390_TLS_IE32:
867 if (is_local)
868 return R_390_TLS_LE32;
869 return R_390_TLS_IE32;
870 case R_390_TLS_GOTIE32:
871 if (is_local)
872 return R_390_TLS_LE32;
873 return R_390_TLS_GOTIE32;
874 case R_390_TLS_LDM32:
875 return R_390_TLS_LE32;
876 }
877
878 return r_type;
879}
880
a85d7ed0
NC		 881/* Look through the relocs for a section during the first phase, and
882 allocate space in the global offset table or procedure linkage
883 table. */
884
b34976b6 885static bfd_boolean
2c3fc389
NC		 886elf_s390_check_relocs (bfd *abfd,
887 struct bfd_link_info *info,
888 asection *sec,
889 const Elf_Internal_Rela *relocs)
a85d7ed0 890{
0451c93c 891 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 892 Elf_Internal_Shdr *symtab_hdr;
893 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 894 const Elf_Internal_Rela *rel;
895 const Elf_Internal_Rela *rel_end;
a85d7ed0 896 asection *sreloc;
5236c819 897 bfd_signed_vma *local_got_refcounts;
69fc87f1 898 int tls_type, old_tls_type;
470b557a 899 Elf_Internal_Sym *isym;
a85d7ed0 900
0e1862bb 901 if (bfd_link_relocatable (info))
b34976b6 902 return TRUE;
a85d7ed0 903
0ffa91dd
NC		 904 BFD_ASSERT (is_s390_elf (abfd));
905
0451c93c 906 htab = elf_s390_hash_table (info);
0ffa91dd 907 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 908 sym_hashes = elf_sym_hashes (abfd);
5236c819 909 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 910
a85d7ed0
NC		 911 sreloc = NULL;
912
913 rel_end = relocs + sec->reloc_count;
914 for (rel = relocs; rel < rel_end; rel++)
915 {
69fc87f1 916 unsigned int r_type;
d42c267e 917 unsigned int r_symndx;
a85d7ed0
NC		 918 struct elf_link_hash_entry *h;
919
920 r_symndx = ELF32_R_SYM (rel->r_info);
921
0451c93c
MS		 922 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
923 {
695344c0 924 /* xgettext:c-format */
871b3ab2 925 _bfd_error_handler (_("%pB: bad symbol index: %d"),
4eca0228 926 abfd, r_symndx);
b34976b6 927 return FALSE;
0451c93c
MS		 928 }
929
a85d7ed0 930 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK		 931 {
932 /* A local symbol. */
933 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
934 abfd, r_symndx);
935 if (isym == NULL)
936 return FALSE;
937
938 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
939 {
940 struct plt_entry *plt;
941
0cb79d69
AK		 942 if (htab->elf.dynobj == NULL)
943 htab->elf.dynobj = abfd;
944
470b557a
AK		 945 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
946 return FALSE;
947
948 if (local_got_refcounts == NULL)
949 {
950 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
951 return FALSE;
952 local_got_refcounts = elf_local_got_refcounts (abfd);
953 }
954 plt = elf_s390_local_plt (abfd);
955 plt[r_symndx].plt.refcount++;
956 }
957 h = NULL;
958 }
a85d7ed0 959 else
973a3492
L		 960 {
961 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
962 while (h->root.type == bfd_link_hash_indirect
963 || h->root.type == bfd_link_hash_warning)
964 h = (struct elf_link_hash_entry *) h->root.u.i.link;
965 }
a85d7ed0 966
5236c819
MS		 967 /* Create got section and local_got_refcounts array if they
968 are needed. */
69fc87f1
MS		 969 r_type = elf_s390_tls_transition (info,
970 ELF32_R_TYPE (rel->r_info),
971 h == NULL);
972 switch (r_type)
a85d7ed0
NC		 973 {
974 case R_390_GOT12:
5236c819 975 case R_390_GOT16:
bd1ea41b 976 case R_390_GOT20:
a85d7ed0 977 case R_390_GOT32:
befc3abb 978 case R_390_GOTENT:
5236c819
MS		 979 case R_390_GOTPLT12:
980 case R_390_GOTPLT16:
bd1ea41b 981 case R_390_GOTPLT20:
5236c819
MS		 982 case R_390_GOTPLT32:
983 case R_390_GOTPLTENT:
69fc87f1
MS		 984 case R_390_TLS_GD32:
985 case R_390_TLS_GOTIE12:
bd1ea41b 986 case R_390_TLS_GOTIE20:
69fc87f1
MS		 987 case R_390_TLS_GOTIE32:
988 case R_390_TLS_IEENT:
989 case R_390_TLS_IE32:
990 case R_390_TLS_LDM32:
5236c819
MS		 991 if (h == NULL
992 && local_got_refcounts == NULL)
a85d7ed0 993 {
470b557a 994 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 995 return FALSE;
470b557a 996 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 997 }
5236c819
MS		 998 /* Fall through. */
999 case R_390_GOTOFF16:
1000 case R_390_GOTOFF32:
0451c93c 1001 case R_390_GOTPC:
befc3abb 1002 case R_390_GOTPCDBL:
f41345a7 1003 if (htab->elf.sgot == NULL)
0451c93c
MS		 1004 {
1005 if (htab->elf.dynobj == NULL)
1006 htab->elf.dynobj = abfd;
ce558b89 1007 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
b34976b6 1008 return FALSE;
0451c93c 1009 }
5236c819
MS		 1010 }
1011
470b557a
AK		 1012 if (h != NULL)
1013 {
1014 if (htab->elf.dynobj == NULL)
1015 htab->elf.dynobj = abfd;
1016 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1017 return FALSE;
1018
1019 /* Make sure an IFUNC symbol defined in a non-shared object
1020 always gets a PLT slot. */
1021 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1022 {
1023 /* The symbol is called by the dynamic loader in order
1024 to resolve the relocation. So it is in fact also
1025 referenced. */
1026 h->ref_regular = 1;
1027 h->needs_plt = 1;
1028 }
1029 }
69fc87f1 1030 switch (r_type)
5236c819 1031 {
5236c819
MS		 1032 case R_390_GOTPC:
1033 case R_390_GOTPCDBL:
470b557a
AK		 1034 /* These relocs do not need a GOT slot. They just load the
1035 GOT pointer itself or address something else relative to
1036 the GOT. Since the GOT pointer has been set up above we
1037 are done. */
a85d7ed0 1038 break;
01a53584
AK		 1039 case R_390_GOTOFF16:
1040 case R_390_GOTOFF32:
1041 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
1042 break;
1a0670f3 1043 /* Fall through. */
a85d7ed0 1044
fb798c50 1045 case R_390_PLT12DBL:
26e41594 1046 case R_390_PLT16DBL:
fb798c50 1047 case R_390_PLT24DBL:
26e41594 1048 case R_390_PLT32DBL:
a85d7ed0 1049 case R_390_PLT32:
5236c819
MS		 1050 case R_390_PLTOFF16:
1051 case R_390_PLTOFF32:
a85d7ed0 1052 /* This symbol requires a procedure linkage table entry. We
26e41594
AM		 1053 actually build the entry in adjust_dynamic_symbol,
1054 because this might be a case of linking PIC code which is
1055 never referenced by a dynamic object, in which case we
1056 don't need to generate a procedure linkage table entry
1057 after all. */
a85d7ed0
NC		 1058
1059 /* If this is a local symbol, we resolve it directly without
26e41594 1060 creating a procedure linkage table entry. */
5236c819
MS		 1061 if (h != NULL)
1062 {
f5385ebf 1063 h->needs_plt = 1;
5236c819
MS		 1064 h->plt.refcount += 1;
1065 }
1066 break;
a85d7ed0 1067
5236c819
MS		 1068 case R_390_GOTPLT12:
1069 case R_390_GOTPLT16:
bd1ea41b 1070 case R_390_GOTPLT20:
5236c819
MS		 1071 case R_390_GOTPLT32:
1072 case R_390_GOTPLTENT:
1073 /* This symbol requires either a procedure linkage table entry
1074 or an entry in the local got. We actually build the entry
1075 in adjust_dynamic_symbol because whether this is really a
1076 global reference can change and with it the fact if we have
1077 to create a plt entry or a local got entry. To be able to
1078 make a once global symbol a local one we have to keep track
1079 of the number of gotplt references that exist for this
1080 symbol. */
1081 if (h != NULL)
1082 {
1083 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1084 h->needs_plt = 1;
5236c819
MS		 1085 h->plt.refcount += 1;
1086 }
1087 else
1088 local_got_refcounts[r_symndx] += 1;
a85d7ed0
NC		 1089 break;
1090
69fc87f1
MS		 1091 case R_390_TLS_LDM32:
1092 htab->tls_ldm_got.refcount += 1;
1093 break;
1094
1095 case R_390_TLS_IE32:
1096 case R_390_TLS_GOTIE12:
bd1ea41b 1097 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1098 case R_390_TLS_GOTIE32:
1099 case R_390_TLS_IEENT:
0e1862bb 1100 if (bfd_link_pic (info))
69fc87f1 1101 info->flags |= DF_STATIC_TLS;
ae9a127f 1102 /* Fall through. */
69fc87f1
MS		 1103
1104 case R_390_GOT12:
26e41594 1105 case R_390_GOT16:
bd1ea41b 1106 case R_390_GOT20:
69fc87f1
MS		 1107 case R_390_GOT32:
1108 case R_390_GOTENT:
1109 case R_390_TLS_GD32:
1110 /* This symbol requires a global offset table entry. */
1111 switch (r_type)
1112 {
1113 default:
1114 case R_390_GOT12:
1115 case R_390_GOT16:
bd1ea41b 1116 case R_390_GOT20:
69fc87f1
MS		 1117 case R_390_GOT32:
1118 case R_390_GOTENT:
1119 tls_type = GOT_NORMAL;
1120 break;
1121 case R_390_TLS_GD32:
1122 tls_type = GOT_TLS_GD;
1123 break;
1124 case R_390_TLS_IE32:
1125 case R_390_TLS_GOTIE32:
1126 tls_type = GOT_TLS_IE;
1127 break;
1128 case R_390_TLS_GOTIE12:
bd1ea41b 1129 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1130 case R_390_TLS_IEENT:
1131 tls_type = GOT_TLS_IE_NLT;
1132 break;
1133 }
1134
1135 if (h != NULL)
1136 {
1137 h->got.refcount += 1;
1138 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1139 }
1140 else
1141 {
1142 local_got_refcounts[r_symndx] += 1;
1143 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1144 }
1145 /* If a TLS symbol is accessed using IE at least once,
1146 there is no point to use dynamic model for it. */
1147 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1148 {
1149 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1150 {
4eca0228 1151 _bfd_error_handler
695344c0 1152 /* xgettext:c-format */
871b3ab2 1153 (_("%pB: `%s' accessed both as normal and thread local symbol"),
d003868e 1154 abfd, h->root.root.string);
69fc87f1
MS		 1155 return FALSE;
1156 }
1157 if (old_tls_type > tls_type)
1158 tls_type = old_tls_type;
1159 }
1160
1161 if (old_tls_type != tls_type)
1162 {
1163 if (h != NULL)
1164 elf_s390_hash_entry (h)->tls_type = tls_type;
1165 else
1166 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1167 }
1168
1169 if (r_type != R_390_TLS_IE32)
1170 break;
ae9a127f 1171 /* Fall through. */
69fc87f1
MS		 1172
1173 case R_390_TLS_LE32:
e00d879a
AK		 1174 /* For static linking and executables this reloc will be
1175 calculated at linktime otherwise a TLS_TPOFF runtime
1176 reloc will be generated. */
0e1862bb 1177 if (r_type == R_390_TLS_LE32 && bfd_link_pie (info))
e00d879a
AK		 1178 break;
1179
0e1862bb 1180 if (!bfd_link_pic (info))
69fc87f1
MS		 1181 break;
1182 info->flags |= DF_STATIC_TLS;
ae9a127f 1183 /* Fall through. */
69fc87f1 1184
26e41594
AM		 1185 case R_390_8:
1186 case R_390_16:
a85d7ed0 1187 case R_390_32:
26e41594 1188 case R_390_PC16:
fb798c50 1189 case R_390_PC12DBL:
26e41594 1190 case R_390_PC16DBL:
fb798c50 1191 case R_390_PC24DBL:
befc3abb 1192 case R_390_PC32DBL:
a85d7ed0 1193 case R_390_PC32:
99ba5125 1194 if (h != NULL && bfd_link_executable (info))
0451c93c
MS		 1195 {
1196 /* If this reloc is in a read-only section, we might
1197 need a copy reloc. We can't check reliably at this
1198 stage whether the section is read-only, as input
1199 sections have not yet been mapped to output sections.
1200 Tentatively set the flag for now, and correct in
1201 adjust_dynamic_symbol. */
f5385ebf 1202 h->non_got_ref = 1;
ec338859 1203
0e1862bb 1204 if (!bfd_link_pic (info))
470b557a
AK		 1205 {
1206 /* We may need a .plt entry if the function this reloc
1207 refers to is in a shared lib. */
1208 h->plt.refcount += 1;
1209 }
0451c93c 1210 }
a85d7ed0
NC		 1211
1212 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1213 against a global symbol, or a non PC relative reloc
1214 against a local symbol, then we need to copy the reloc
1215 into the shared library. However, if we are linking with
1216 -Bsymbolic, we do not need to copy a reloc against a
1217 global symbol which is defined in an object we are
1218 including in the link (i.e., DEF_REGULAR is set). At
1219 this point we have not seen all the input files, so it is
1220 possible that DEF_REGULAR is not set now but will be set
1221 later (it is never cleared). In case of a weak definition,
1222 DEF_REGULAR may be cleared later by a strong definition in
1223 a shared library. We account for that possibility below by
1224 storing information in the relocs_copied field of the hash
1225 table entry. A similar situation occurs when creating
1226 shared libraries and symbol visibility changes render the
1227 symbol local.
1228
1229 If on the other hand, we are creating an executable, we
1230 may need to keep relocations for symbols satisfied by a
1231 dynamic library if we manage to avoid copy relocs for the
1232 symbol. */
0e1862bb 1233 if ((bfd_link_pic (info)
0451c93c 1234 && (sec->flags & SEC_ALLOC) != 0
ec338859 1235 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1236 && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1237 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1238 && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL
befc3abb 1239 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
0451c93c
MS		 1240 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1241 || (h != NULL
8c21ca21 1242 && (! SYMBOLIC_BIND (info, h)
0451c93c 1243 || h->root.type == bfd_link_hash_defweak
f5385ebf 1244 || !h->def_regular))))
64285810 1245 || (ELIMINATE_COPY_RELOCS
0e1862bb 1246 && !bfd_link_pic (info)
0451c93c
MS		 1247 && (sec->flags & SEC_ALLOC) != 0
1248 && h != NULL
1249 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1250 || !h->def_regular)))
a85d7ed0 1251 {
00d8c7a9
AK		 1252 struct elf_dyn_relocs *p;
1253 struct elf_dyn_relocs **head;
ec338859 1254
0451c93c
MS		 1255 /* We must copy these reloc types into the output file.
1256 Create a reloc section in dynobj and make room for
1257 this reloc. */
a85d7ed0
NC		 1258 if (sreloc == NULL)
1259 {
0451c93c
MS		 1260 if (htab->elf.dynobj == NULL)
1261 htab->elf.dynobj = abfd;
a85d7ed0 1262
83bac4b0
NC		 1263 sreloc = _bfd_elf_make_dynamic_reloc_section
1264 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1265
a85d7ed0 1266 if (sreloc == NULL)
83bac4b0 1267 return FALSE;
a85d7ed0
NC		 1268 }
1269
0451c93c
MS		 1270 /* If this is a global symbol, we count the number of
1271 relocations we need for this symbol. */
1272 if (h != NULL)
a85d7ed0 1273 {
190eb1dd 1274 head = &h->dyn_relocs;
0451c93c
MS		 1275 }
1276 else
1277 {
ec338859
AM		 1278 /* Track dynamic relocs needed for local syms too.
1279 We really need local syms available to do this
1280 easily. Oh well. */
ec338859 1281 asection *s;
6edfbbad 1282 void *vpp;
ae9a127f 1283
87d72d41
AM		 1284 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1285 abfd, r_symndx);
1286 if (isym == NULL)
b34976b6 1287 return FALSE;
ec338859 1288
87d72d41
AM		 1289 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1290 if (s == NULL)
1291 s = sec;
1292
6edfbbad 1293 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1294 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1295 }
1296
1297 p = *head;
1298 if (p == NULL || p->sec != sec)
1299 {
986f0783 1300 size_t amt = sizeof *p;
ae9a127f 1301
00d8c7a9 1302 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1303 bfd_alloc (htab->elf.dynobj, amt));
1304 if (p == NULL)
b34976b6 1305 return FALSE;
ec338859
AM		 1306 p->next = *head;
1307 *head = p;
1308 p->sec = sec;
1309 p->count = 0;
1310 p->pc_count = 0;
a85d7ed0 1311 }
ec338859
AM		 1312
1313 p->count += 1;
1314 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
fb798c50 1315 || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL
ec338859 1316 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
fb798c50 1317 || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL
befc3abb 1318 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
ec338859
AM		 1319 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1320 p->pc_count += 1;
a85d7ed0 1321 }
a85d7ed0 1322 break;
ec338859 1323
a85d7ed0
NC		 1324 /* This relocation describes the C++ object vtable hierarchy.
1325 Reconstruct it for later use during GC. */
26e41594 1326 case R_390_GNU_VTINHERIT:
c152c796 1327 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
26e41594
AM		 1328 return FALSE;
1329 break;
ec338859 1330
a85d7ed0
NC		 1331 /* This relocation describes which C++ vtable entries are actually
1332 used. Record for later use during GC. */
26e41594 1333 case R_390_GNU_VTENTRY:
a0ea3a14 1334 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
26e41594
AM		 1335 return FALSE;
1336 break;
ec338859 1337
a85d7ed0
NC		 1338 default:
1339 break;
1340 }
1341 }
1342
b34976b6 1343 return TRUE;
a85d7ed0
NC		 1344}
1345
1346/* Return the section that should be marked against GC for a given
1347 relocation. */
1348
1349static asection *
07adf181
AM		 1350elf_s390_gc_mark_hook (asection *sec,
1351 struct bfd_link_info *info,
1352 Elf_Internal_Rela *rel,
1353 struct elf_link_hash_entry *h,
1354 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1355{
1356 if (h != NULL)
07adf181
AM		 1357 switch (ELF32_R_TYPE (rel->r_info))
1358 {
1359 case R_390_GNU_VTINHERIT:
1360 case R_390_GNU_VTENTRY:
1361 return NULL;
1362 }
1363 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0 1364
a85d7ed0
NC		 1365}
1366
5236c819
MS		 1367/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1368 entry but we found we will not create any. Called when we find we will
1369 not have any PLT for this symbol, by for example
1370 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1371 or elf_s390_size_dynamic_sections if no dynamic sections will be
1372 created (we're only linking static objects). */
1373
1374static void
2c3fc389 1375elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1376{
1377 if (h->elf.root.type == bfd_link_hash_warning)
1378 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1379
1380 if (h->gotplt_refcount <= 0)
1381 return;
1382
1383 /* We simply add the number of gotplt references to the number
1384 * of got references for this symbol. */
1385 h->elf.got.refcount += h->gotplt_refcount;
1386 h->gotplt_refcount = -1;
1387}
1388
a85d7ed0
NC		 1389/* Adjust a symbol defined by a dynamic object and referenced by a
1390 regular object. The current definition is in some section of the
1391 dynamic object, but we're not including those sections. We have to
1392 change the definition to something the rest of the link can
1393 understand. */
1394
b34976b6 1395static bfd_boolean
2c3fc389
NC		 1396elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1397 struct elf_link_hash_entry *h)
a85d7ed0 1398{
0451c93c 1399 struct elf_s390_link_hash_table *htab;
5474d94f 1400 asection *s, *srel;
a85d7ed0 1401
470b557a
AK		 1402 /* STT_GNU_IFUNC symbol must go through PLT. */
1403 if (s390_is_ifunc_symbol_p (h))
d8ee9e44
AK		 1404 {
1405 /* All local STT_GNU_IFUNC references must be treated as local
1406 calls via local PLT. */
1407 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1408 {
1409 bfd_size_type pc_count = 0, count = 0;
1410 struct elf_dyn_relocs **pp;
d8ee9e44
AK		 1411 struct elf_dyn_relocs *p;
1412
190eb1dd 1413 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
d8ee9e44
AK		 1414 {
1415 pc_count += p->pc_count;
1416 p->count -= p->pc_count;
1417 p->pc_count = 0;
1418 count += p->count;
1419 if (p->count == 0)
1420 *pp = p->next;
1421 else
1422 pp = &p->next;
1423 }
1424
1425 if (pc_count || count)
1426 {
1427 h->needs_plt = 1;
1428 h->non_got_ref = 1;
1429 if (h->plt.refcount <= 0)
1430 h->plt.refcount = 1;
1431 else
1432 h->plt.refcount += 1;
1433 }
1434 }
1435
1436 if (h->plt.refcount <= 0)
1437 {
1438 h->plt.offset = (bfd_vma) -1;
1439 h->needs_plt = 0;
1440 }
1441 return TRUE;
1442 }
470b557a 1443
a85d7ed0
NC		 1444 /* If this is a function, put it in the procedure linkage table. We
1445 will fill in the contents of the procedure linkage table later
cedb70c5 1446 (although we could actually do it here). */
a85d7ed0 1447 if (h->type == STT_FUNC
f5385ebf 1448 || h->needs_plt)
a85d7ed0 1449 {
0451c93c 1450 if (h->plt.refcount <= 0
8c21ca21
AK		 1451 || SYMBOL_CALLS_LOCAL (info, h)
1452 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1453 && h->root.type != bfd_link_hash_undefweak))
a85d7ed0
NC		 1454 {
1455 /* This case can occur if we saw a PLT32 reloc in an input
26e41594
AM		 1456 file, but the symbol was never referred to by a dynamic
1457 object, or if all references were garbage collected. In
a85d7ed0
NC		 1458 such a case, we don't actually need to build a procedure
1459 linkage table, and we can just do a PC32 reloc instead. */
1460 h->plt.offset = (bfd_vma) -1;
f5385ebf 1461 h->needs_plt = 0;
5236c819 1462 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1463 }
1464
b34976b6 1465 return TRUE;
a85d7ed0 1466 }
bbd7ec4a 1467 else
0451c93c
MS		 1468 /* It's possible that we incorrectly decided a .plt reloc was
1469 needed for an R_390_PC32 reloc to a non-function sym in
1470 check_relocs. We can't decide accurately between function and
1471 non-function syms in check-relocs; Objects loaded later in
1472 the link may change h->type. So fix it now. */
bbd7ec4a 1473 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1474
1475 /* If this is a weak symbol, and there is a real definition, the
1476 processor independent code will have arranged for us to see the
1477 real definition first, and we can just use the same value. */
60d67dc8 1478 if (h->is_weakalias)
a85d7ed0 1479 {
60d67dc8
AM		 1480 struct elf_link_hash_entry *def = weakdef (h);
1481 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1482 h->root.u.def.section = def->root.u.def.section;
1483 h->root.u.def.value = def->root.u.def.value;
64285810 1484 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
60d67dc8 1485 h->non_got_ref = def->non_got_ref;
b34976b6 1486 return TRUE;
a85d7ed0
NC		 1487 }
1488
1489 /* This is a reference to a symbol defined by a dynamic object which
1490 is not a function. */
1491
1492 /* If we are creating a shared library, we must presume that the
1493 only references to the symbol are via the global offset table.
1494 For such cases we need not do anything here; the relocations will
1495 be handled correctly by relocate_section. */
0e1862bb 1496 if (bfd_link_pic (info))
b34976b6 1497 return TRUE;
a85d7ed0
NC		 1498
1499 /* If there are no references to this symbol that do not use the
1500 GOT, we don't need to generate a copy reloc. */
f5385ebf 1501 if (!h->non_got_ref)
b34976b6 1502 return TRUE;
a85d7ed0 1503
0451c93c
MS		 1504 /* If -z nocopyreloc was given, we won't generate them either. */
1505 if (info->nocopyreloc)
1506 {
f5385ebf 1507 h->non_got_ref = 0;
b34976b6 1508 return TRUE;
0451c93c
MS		 1509 }
1510
3bf083ed
AM		 1511 /* If we don't find any dynamic relocs in read-only sections, then
1512 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5dbc8b37 1513 if (ELIMINATE_COPY_RELOCS && !_bfd_elf_readonly_dynrelocs (h))
0451c93c 1514 {
3bf083ed
AM		 1515 h->non_got_ref = 0;
1516 return TRUE;
0451c93c
MS		 1517 }
1518
a85d7ed0
NC		 1519 /* We must allocate the symbol in our .dynbss section, which will
1520 become part of the .bss section of the executable. There will be
1521 an entry for this symbol in the .dynsym section. The dynamic
1522 object will contain position independent code, so all references
1523 from the dynamic object to this symbol will go through the global
1524 offset table. The dynamic linker will use the .dynsym entry to
1525 determine the address it must put in the global offset table, so
1526 both the dynamic object and the regular object will refer to the
1527 same memory location for the variable. */
1528
0451c93c 1529 htab = elf_s390_hash_table (info);
a85d7ed0 1530
0451c93c
MS		 1531 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1532 copy the initial value out of the dynamic object and into the
1533 runtime process image. */
5474d94f
AM		 1534 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1535 {
1536 s = htab->elf.sdynrelro;
1537 srel = htab->elf.sreldynrelro;
1538 }
1539 else
1540 {
1541 s = htab->elf.sdynbss;
1542 srel = htab->elf.srelbss;
1543 }
1d7e9d18 1544 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1545 {
5474d94f 1546 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 1547 h->needs_copy = 1;
a85d7ed0
NC		 1548 }
1549
6cabe1ea 1550 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a85d7ed0
NC		 1551}
1552
0451c93c
MS		 1553/* Allocate space in .plt, .got and associated reloc sections for
1554 dynamic relocs. */
1555
b34976b6 1556static bfd_boolean
2c3fc389 1557allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1558{
1559 struct bfd_link_info *info;
1560 struct elf_s390_link_hash_table *htab;
00d8c7a9 1561 struct elf_dyn_relocs *p;
0451c93c 1562
e92d460e 1563 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1564 return TRUE;
0451c93c
MS		 1565
1566 info = (struct bfd_link_info *) inf;
1567 htab = elf_s390_hash_table (info);
1568
470b557a
AK		 1569 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1570 here if it is defined and referenced in a non-shared object. */
1571 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
61643fba 1572 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
470b557a
AK		 1573 else if (htab->elf.dynamic_sections_created
1574 && h->plt.refcount > 0)
0451c93c
MS		 1575 {
1576 /* Make sure this symbol is output as a dynamic symbol.
1577 Undefined weak syms won't yet be marked as dynamic. */
1578 if (h->dynindx == -1
f5385ebf 1579 && !h->forced_local)
0451c93c 1580 {
c152c796 1581 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1582 return FALSE;
0451c93c
MS		 1583 }
1584
0e1862bb 1585 if (bfd_link_pic (info)
4ec72bde 1586 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1587 {
f41345a7 1588 asection *s = htab->elf.splt;
0451c93c
MS		 1589
1590 /* If this is the first .plt entry, make room for the special
1591 first entry. */
eea6121a
AM		 1592 if (s->size == 0)
1593 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1594
eea6121a 1595 h->plt.offset = s->size;
0451c93c
MS		 1596
1597 /* If this symbol is not defined in a regular file, and we are
1598 not generating a shared library, then set the symbol to this
1599 location in the .plt. This is required to make function
1600 pointers compare as equal between the normal executable and
1601 the shared library. */
0e1862bb 1602 if (! bfd_link_pic (info)
f5385ebf 1603 && !h->def_regular)
0451c93c
MS		 1604 {
1605 h->root.u.def.section = s;
1606 h->root.u.def.value = h->plt.offset;
1607 }
ec338859 1608
0451c93c 1609 /* Make room for this entry. */
eea6121a 1610 s->size += PLT_ENTRY_SIZE;
ec338859 1611
24801b15
AK		 1612 /* We also need to make an entry in the .got.plt section, which
1613 will be placed in the .got section by the linker script. */
f41345a7 1614 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1615
1616 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1617 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1618 }
1619 else
1620 {
07d6d2b8 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 1624 }
ec338859 1625 }
0451c93c
MS		 1626 else
1627 {
1628 h->plt.offset = (bfd_vma) -1;
f5385ebf 1629 h->needs_plt = 0;
5236c819 1630 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
ec338859
AM		 1631 }
1632
69fc87f1
MS		 1633 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1634 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1635 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1636 we can save the dynamic TLS relocation. */
1637 if (h->got.refcount > 0
0e1862bb 1638 && !bfd_link_pic (info)
69fc87f1
MS		 1639 && h->dynindx == -1
1640 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
0451c93c 1641 {
69fc87f1
MS		 1642 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1643 /* For the GOTIE access without a literal pool entry the offset has
1644 to be stored somewhere. The immediate value in the instruction
1645 is not bit enough so the value is stored in the got. */
1646 {
f41345a7
AK		 1647 h->got.offset = htab->elf.sgot->size;
1648 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1649 }
1650 else
1651 h->got.offset = (bfd_vma) -1;
1652 }
1653 else if (h->got.refcount > 0)
ceada896 1654 {
0451c93c 1655 asection *s;
b34976b6 1656 bfd_boolean dyn;
69fc87f1 1657 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1658
1659 /* Make sure this symbol is output as a dynamic symbol.
1660 Undefined weak syms won't yet be marked as dynamic. */
1661 if (h->dynindx == -1
f5385ebf 1662 && !h->forced_local)
0451c93c 1663 {
c152c796 1664 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1665 return FALSE;
0451c93c
MS		 1666 }
1667
f41345a7 1668 s = htab->elf.sgot;
eea6121a
AM		 1669 h->got.offset = s->size;
1670 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1671 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1672 if (tls_type == GOT_TLS_GD)
eea6121a 1673 s->size += GOT_ENTRY_SIZE;
0451c93c 1674 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1675 /* R_390_TLS_IE32 needs one dynamic relocation,
1676 R_390_TLS_GD32 needs one if local symbol and two if global. */
1677 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1678 || tls_type >= GOT_TLS_IE)
f41345a7 1679 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1 1680 else if (tls_type == GOT_TLS_GD)
f41345a7 1681 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela);
82058a73
MS		 1682 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1683 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 1684 && (bfd_link_pic (info)
82058a73 1685 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1686 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1687 }
1688 else
1689 h->got.offset = (bfd_vma) -1;
1690
190eb1dd 1691 if (h->dyn_relocs == NULL)
b34976b6 1692 return TRUE;
0451c93c
MS		 1693
1694 /* In the shared -Bsymbolic case, discard space allocated for
1695 dynamic pc-relative relocs against symbols which turn out to be
1696 defined in regular objects. For the normal shared case, discard
1697 space for pc-relative relocs that have become local due to symbol
1698 visibility changes. */
1699
0e1862bb 1700 if (bfd_link_pic (info))
0451c93c 1701 {
8c21ca21 1702 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1703 {
00d8c7a9 1704 struct elf_dyn_relocs **pp;
0451c93c 1705
190eb1dd 1706 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
0451c93c
MS		 1707 {
1708 p->count -= p->pc_count;
1709 p->pc_count = 0;
1710 if (p->count == 0)
1711 *pp = p->next;
1712 else
1713 pp = &p->next;
1714 }
1715 }
82058a73
MS		 1716
1717 /* Also discard relocs on undefined weak syms with non-default
1718 visibility. */
190eb1dd 1719 if (h->dyn_relocs != NULL
82058a73 1720 && h->root.type == bfd_link_hash_undefweak)
22d606e9 1721 {
b27bb18f
L		 1722 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1723 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
190eb1dd 1724 h->dyn_relocs = NULL;
22d606e9
AM		 1725
1726 /* Make sure undefined weak symbols are output as a dynamic
1727 symbol in PIEs. */
1728 else if (h->dynindx == -1
1729 && !h->forced_local)
1730 {
1731 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1732 return FALSE;
1733 }
1734 }
0451c93c 1735 }
64285810 1736 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1737 {
1738 /* For the non-shared case, discard space for relocs against
1739 symbols which turn out to need copy relocs or are not
1740 dynamic. */
1741
f5385ebf
AM		 1742 if (!h->non_got_ref
1743 && ((h->def_dynamic
1744 && !h->def_regular)
0451c93c
MS		 1745 || (htab->elf.dynamic_sections_created
1746 && (h->root.type == bfd_link_hash_undefweak
1747 || h->root.type == bfd_link_hash_undefined))))
1748 {
1749 /* Make sure this symbol is output as a dynamic symbol.
1750 Undefined weak syms won't yet be marked as dynamic. */
1751 if (h->dynindx == -1
f5385ebf 1752 && !h->forced_local)
0451c93c 1753 {
c152c796 1754 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1755 return FALSE;
0451c93c
MS		 1756 }
1757
1758 /* If that succeeded, we know we'll be keeping all the
1759 relocs. */
1760 if (h->dynindx != -1)
1761 goto keep;
1762 }
1763
190eb1dd 1764 h->dyn_relocs = NULL;
0451c93c 1765
ec338859 1766 keep: ;
0451c93c
MS		 1767 }
1768
1769 /* Finally, allocate space. */
190eb1dd 1770 for (p = h->dyn_relocs; p != NULL; p = p->next)
0451c93c
MS		 1771 {
1772 asection *sreloc = elf_section_data (p->sec)->sreloc;
ae9a127f 1773
eea6121a 1774 sreloc->size += p->count * sizeof (Elf32_External_Rela);
0451c93c
MS		 1775 }
1776
b34976b6 1777 return TRUE;
0451c93c
MS		 1778}
1779
a85d7ed0
NC		 1780/* Set the sizes of the dynamic sections. */
1781
b34976b6 1782static bfd_boolean
2c3fc389
NC		 1783elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1784 struct bfd_link_info *info)
a85d7ed0 1785{
0451c93c 1786 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1787 bfd *dynobj;
1788 asection *s;
b34976b6 1789 bfd_boolean relocs;
0451c93c 1790 bfd *ibfd;
a85d7ed0 1791
0451c93c
MS		 1792 htab = elf_s390_hash_table (info);
1793 dynobj = htab->elf.dynobj;
1794 if (dynobj == NULL)
1795 abort ();
a85d7ed0 1796
0451c93c 1797 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1798 {
1799 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 1800 if (bfd_link_executable (info) && !info->nointerp)
a85d7ed0 1801 {
3d4d4302 1802 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 1803 if (s == NULL)
1804 abort ();
eea6121a 1805 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 1806 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1807 }
1808 }
a85d7ed0 1809
0451c93c
MS		 1810 /* Set up .got offsets for local syms, and space for local dynamic
1811 relocs. */
c72f2fb2 1812 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a85d7ed0 1813 {
0451c93c
MS		 1814 bfd_signed_vma *local_got;
1815 bfd_signed_vma *end_local_got;
69fc87f1 1816 char *local_tls_type;
0451c93c
MS		 1817 bfd_size_type locsymcount;
1818 Elf_Internal_Shdr *symtab_hdr;
1819 asection *srela;
470b557a
AK		 1820 struct plt_entry *local_plt;
1821 unsigned int i;
a85d7ed0 1822
0ffa91dd 1823 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 1824 continue;
1825
0451c93c 1826 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 1827 {
00d8c7a9 1828 struct elf_dyn_relocs *p;
0451c93c 1829
6edfbbad 1830 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 1831 {
ec338859
AM		 1832 if (!bfd_is_abs_section (p->sec)
1833 && bfd_is_abs_section (p->sec->output_section))
1834 {
1835 /* Input section has been discarded, either because
1836 it is a copy of a linkonce section or due to
1837 linker script /DISCARD/, so we'll be discarding
1838 the relocs too. */
1839 }
248866a8 1840 else if (p->count != 0)
ec338859
AM		 1841 {
1842 srela = elf_section_data (p->sec)->sreloc;
eea6121a 1843 srela->size += p->count * sizeof (Elf32_External_Rela);
248866a8
AM		 1844 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1845 info->flags |= DF_TEXTREL;
ec338859 1846 }
a85d7ed0
NC		 1847 }
1848 }
0451c93c
MS		 1849
1850 local_got = elf_local_got_refcounts (ibfd);
1851 if (!local_got)
1852 continue;
1853
0ffa91dd 1854 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 1855 locsymcount = symtab_hdr->sh_info;
1856 end_local_got = local_got + locsymcount;
69fc87f1 1857 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 1858 s = htab->elf.sgot;
1859 srela = htab->elf.srelgot;
69fc87f1 1860 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 1861 {
0451c93c 1862 if (*local_got > 0)
a85d7ed0 1863 {
eea6121a
AM		 1864 *local_got = s->size;
1865 s->size += GOT_ENTRY_SIZE;
69fc87f1 1866 if (*local_tls_type == GOT_TLS_GD)
eea6121a 1867 s->size += GOT_ENTRY_SIZE;
0e1862bb 1868 if (bfd_link_pic (info))
eea6121a 1869 srela->size += sizeof (Elf32_External_Rela);
a85d7ed0
NC		 1870 }
1871 else
0451c93c
MS		 1872 *local_got = (bfd_vma) -1;
1873 }
470b557a
AK		 1874 local_plt = elf_s390_local_plt (ibfd);
1875 for (i = 0; i < symtab_hdr->sh_info; i++)
1876 {
1877 if (local_plt[i].plt.refcount > 0)
1878 {
1879 local_plt[i].plt.offset = htab->elf.iplt->size;
1880 htab->elf.iplt->size += PLT_ENTRY_SIZE;
1881 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
1882 htab->elf.irelplt->size += RELA_ENTRY_SIZE;
1883 }
1884 else
07d6d2b8 1885 local_plt[i].plt.offset = (bfd_vma) -1;
470b557a 1886 }
0451c93c
MS		 1887 }
1888
69fc87f1
MS		 1889 if (htab->tls_ldm_got.refcount > 0)
1890 {
1891 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
1892 relocs. */
f41345a7
AK		 1893 htab->tls_ldm_got.offset = htab->elf.sgot->size;
1894 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
1895 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1
MS		 1896 }
1897 else
1898 htab->tls_ldm_got.offset = -1;
1899
0451c93c
MS		 1900 /* Allocate global sym .plt and .got entries, and space for global
1901 sym dynamic relocs. */
2c3fc389 1902 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 1903
1904 /* We now have determined the sizes of the various dynamic sections.
1905 Allocate memory for them. */
b34976b6 1906 relocs = FALSE;
0451c93c
MS		 1907 for (s = dynobj->sections; s != NULL; s = s->next)
1908 {
1909 if ((s->flags & SEC_LINKER_CREATED) == 0)
1910 continue;
1911
f41345a7
AK		 1912 if (s == htab->elf.splt
1913 || s == htab->elf.sgot
1914 || s == htab->elf.sgotplt
9d19e4fd 1915 || s == htab->elf.sdynbss
5474d94f 1916 || s == htab->elf.sdynrelro
470b557a
AK		 1917 || s == htab->elf.iplt
1918 || s == htab->elf.igotplt
1919 || s == htab->irelifunc)
0451c93c
MS		 1920 {
1921 /* Strip this section if we don't need it; see the
1922 comment below. */
a85d7ed0 1923 }
fd361982 1924 else if (CONST_STRNEQ (bfd_section_name (s), ".rela"))
0451c93c 1925 {
eea6121a 1926 if (s->size != 0)
b34976b6 1927 relocs = TRUE;
ec338859 1928
0451c93c
MS		 1929 /* We use the reloc_count field as a counter if we need
1930 to copy relocs into the output file. */
1931 s->reloc_count = 0;
1932 }
1933 else
a85d7ed0
NC		 1934 {
1935 /* It's not one of our sections, so don't allocate space. */
1936 continue;
1937 }
1938
eea6121a 1939 if (s->size == 0)
a85d7ed0 1940 {
0451c93c
MS		 1941 /* If we don't need this section, strip it from the
1942 output file. This is to handle .rela.bss and
1943 .rela.plt. We must create it in
1944 create_dynamic_sections, because it must be created
1945 before the linker maps input sections to output
1946 sections. The linker does that before
1947 adjust_dynamic_symbol is called, and it is that
1948 function which decides whether anything needs to go
1949 into these sections. */
1950
8423293d 1951 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 1952 continue;
1953 }
1954
c456f082
AM		 1955 if ((s->flags & SEC_HAS_CONTENTS) == 0)
1956 continue;
1957
0451c93c
MS		 1958 /* Allocate memory for the section contents. We use bfd_zalloc
1959 here in case unused entries are not reclaimed before the
1960 section's contents are written out. This should not happen,
1961 but this way if it does, we get a R_390_NONE reloc instead
1962 of garbage. */
eea6121a 1963 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 1964 if (s->contents == NULL)
b34976b6 1965 return FALSE;
a85d7ed0 1966 }
ec338859 1967
3084d7a2 1968 return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs);
a85d7ed0
NC		 1969}
1970
69fc87f1
MS		 1971/* Return the base VMA address which should be subtracted from real addresses
1972 when resolving @dtpoff relocation.
1973 This is PT_TLS segment p_vaddr. */
1974
1975static bfd_vma
2c3fc389 1976dtpoff_base (struct bfd_link_info *info)
69fc87f1 1977{
e1918d23
AM		 1978 /* If tls_sec is NULL, we should have signalled an error already. */
1979 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 1980 return 0;
e1918d23 1981 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 1982}
1983
1984/* Return the relocation value for @tpoff relocation
1985 if STT_TLS virtual address is ADDRESS. */
1986
1987static bfd_vma
2c3fc389 1988tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 1989{
e1918d23 1990 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 1991
e1918d23
AM		 1992 /* If tls_sec is NULL, we should have signalled an error already. */
1993 if (htab->tls_sec == NULL)
69fc87f1 1994 return 0;
e1918d23 1995 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 1996}
1997
1998/* Complain if TLS instruction relocation is against an invalid
1999 instruction. */
2000
2001static void
2c3fc389
NC		 2002invalid_tls_insn (bfd *input_bfd,
2003 asection *input_section,
2004 Elf_Internal_Rela *rel)
69fc87f1
MS		 2005{
2006 reloc_howto_type *howto;
2007
2008 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
4eca0228 2009 _bfd_error_handler
695344c0 2010 /* xgettext:c-format */
2dcf00ce 2011 (_("%pB(%pA+%#" PRIx64 "): invalid instruction for TLS relocation %s"),
d003868e
AM		 2012 input_bfd,
2013 input_section,
2dcf00ce 2014 (uint64_t) rel->r_offset,
69fc87f1 2015 howto->name);
77df2968 2016 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2017}
2018
a85d7ed0
NC		 2019/* Relocate a 390 ELF section. */
2020
b34976b6 2021static bfd_boolean
2c3fc389
NC		 2022elf_s390_relocate_section (bfd *output_bfd,
2023 struct bfd_link_info *info,
2024 bfd *input_bfd,
2025 asection *input_section,
2026 bfd_byte *contents,
2027 Elf_Internal_Rela *relocs,
2028 Elf_Internal_Sym *local_syms,
2029 asection **local_sections)
a85d7ed0 2030{
0451c93c 2031 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2032 Elf_Internal_Shdr *symtab_hdr;
2033 struct elf_link_hash_entry **sym_hashes;
2034 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2035 Elf_Internal_Rela *rel;
2036 Elf_Internal_Rela *relend;
2037
7af5d5c4
AM		 2038 if (!is_s390_elf (input_bfd))
2039 {
2040 bfd_set_error (bfd_error_wrong_format);
2041 return FALSE;
2042 }
0ffa91dd 2043
0451c93c 2044 htab = elf_s390_hash_table (info);
0ffa91dd 2045 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2046 sym_hashes = elf_sym_hashes (input_bfd);
2047 local_got_offsets = elf_local_got_offsets (input_bfd);
2048
a85d7ed0
NC		 2049 rel = relocs;
2050 relend = relocs + input_section->reloc_count;
2051 for (; rel < relend; rel++)
2052 {
5236c819 2053 unsigned int r_type;
a85d7ed0
NC		 2054 reloc_howto_type *howto;
2055 unsigned long r_symndx;
2056 struct elf_link_hash_entry *h;
2057 Elf_Internal_Sym *sym;
2058 asection *sec;
0451c93c 2059 bfd_vma off;
a85d7ed0 2060 bfd_vma relocation;
b34976b6 2061 bfd_boolean unresolved_reloc;
a85d7ed0 2062 bfd_reloc_status_type r;
69fc87f1 2063 int tls_type;
470b557a 2064 asection *base_got = htab->elf.sgot;
b27bb18f 2065 bfd_boolean resolved_to_zero;
ec338859 2066
a85d7ed0
NC		 2067 r_type = ELF32_R_TYPE (rel->r_info);
2068 if (r_type == (int) R_390_GNU_VTINHERIT
26e41594
AM		 2069 || r_type == (int) R_390_GNU_VTENTRY)
2070 continue;
5236c819 2071 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2072 {
2073 bfd_set_error (bfd_error_bad_value);
b34976b6 2074 return FALSE;
a85d7ed0 2075 }
ec338859 2076
b491616a 2077 howto = elf_howto_table + r_type;
a85d7ed0 2078 r_symndx = ELF32_R_SYM (rel->r_info);
5236c819 2079
a85d7ed0
NC		 2080 h = NULL;
2081 sym = NULL;
2082 sec = NULL;
b34976b6 2083 unresolved_reloc = FALSE;
a85d7ed0
NC		 2084 if (r_symndx < symtab_hdr->sh_info)
2085 {
2086 sym = local_syms + r_symndx;
2087 sec = local_sections[r_symndx];
470b557a
AK		 2088 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2089 {
2090 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2091 if (local_plt == NULL)
2092 return FALSE;
2093
2094 /* Address of the PLT slot. */
2095 relocation = (htab->elf.iplt->output_section->vma
2096 + htab->elf.iplt->output_offset
2097 + local_plt[r_symndx].plt.offset);
2098
2099 switch (r_type)
2100 {
31db78f6
AK		 2101 case R_390_PLTOFF16:
2102 case R_390_PLTOFF32:
2103 relocation -= htab->elf.sgot->output_section->vma;
2104 break;
470b557a
AK		 2105 case R_390_GOTPLT12:
2106 case R_390_GOTPLT16:
2107 case R_390_GOTPLT20:
2108 case R_390_GOTPLT32:
2109 case R_390_GOTPLTENT:
2110 case R_390_GOT12:
2111 case R_390_GOT16:
2112 case R_390_GOT20:
2113 case R_390_GOT32:
2114 case R_390_GOTENT:
2115 {
2116 /* Write the PLT slot address into the GOT slot. */
2117 bfd_put_32 (output_bfd, relocation,
2118 htab->elf.sgot->contents +
2119 local_got_offsets[r_symndx]);
2120 relocation = (local_got_offsets[r_symndx] +
2121 htab->elf.sgot->output_offset);
2122
2123 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2124 relocation += htab->elf.sgot->output_section->vma;
2125 break;
2126 }
2127 default:
2128 break;
2129 }
2130 /* The output section is needed later in
2131 finish_dynamic_section when creating the dynamic
2132 relocation. */
2133 local_plt[r_symndx].sec = sec;
2134 goto do_relocation;
2135 }
2136 else
2137 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2138 }
2139 else
2140 {
560e09e9 2141 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2142 bfd_boolean ignored ATTRIBUTE_UNUSED;
ec338859 2143
b2a8e766
AM		 2144 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2145 r_symndx, symtab_hdr, sym_hashes,
2146 h, sec, relocation,
62d887d4 2147 unresolved_reloc, warned, ignored);
a85d7ed0 2148 }
ec338859 2149
dbaa2011 2150 if (sec != NULL && discarded_section (sec))
e4067dbb 2151 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2152 rel, 1, relend, howto, 0, contents);
ab96bf03 2153
0e1862bb 2154 if (bfd_link_relocatable (info))
ab96bf03
AM		 2155 continue;
2156
b27bb18f
L		 2157 resolved_to_zero = (h != NULL
2158 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
2159
a85d7ed0
NC		 2160 switch (r_type)
2161 {
5236c819
MS		 2162 case R_390_GOTPLT12:
2163 case R_390_GOTPLT16:
bd1ea41b 2164 case R_390_GOTPLT20:
5236c819
MS		 2165 case R_390_GOTPLT32:
2166 case R_390_GOTPLTENT:
2167 /* There are three cases for a GOTPLT relocation. 1) The
2168 relocation is against the jump slot entry of a plt that
2169 will get emitted to the output file. 2) The relocation
2170 is against the jump slot of a plt entry that has been
2171 removed. elf_s390_adjust_gotplt has created a GOT entry
2172 as replacement. 3) The relocation is against a local symbol.
2173 Cases 2) and 3) are the same as the GOT relocation code
2174 so we just have to test for case 1 and fall through for
2175 the other two. */
2176 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2177 {
2178 bfd_vma plt_index;
2179
470b557a
AK		 2180 if (s390_is_ifunc_symbol_p (h))
2181 {
2182 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2183 relocation = (plt_index * GOT_ENTRY_SIZE +
2184 htab->elf.igotplt->output_offset);
2185 if (r_type == R_390_GOTPLTENT)
2186 relocation += htab->elf.igotplt->output_section->vma;
2187 }
2188 else
2189 {
2190 /* Calc. index no.
2191 Current offset - size first entry / entry size. */
2192 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2193 PLT_ENTRY_SIZE;
2194
2195 /* Offset in GOT is PLT index plus GOT headers(3)
2196 times 4, addr & GOT addr. */
2197 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2198 if (r_type == R_390_GOTPLTENT)
2199 relocation += htab->elf.sgot->output_section->vma;
2200 }
5236c819
MS		 2201 unresolved_reloc = FALSE;
2202
5236c819
MS		 2203 }
2204 /* Fall through. */
2205
26e41594
AM		 2206 case R_390_GOT12:
2207 case R_390_GOT16:
bd1ea41b 2208 case R_390_GOT20:
26e41594 2209 case R_390_GOT32:
befc3abb 2210 case R_390_GOTENT:
26e41594
AM		 2211 /* Relocation is to the entry for this symbol in the global
2212 offset table. */
470b557a 2213 if (base_got == NULL)
0451c93c 2214 abort ();
ec338859 2215
26e41594
AM		 2216 if (h != NULL)
2217 {
b34976b6 2218 bfd_boolean dyn;
ec338859 2219
26e41594 2220 off = h->got.offset;
0451c93c 2221 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2222
2223 if (s390_is_ifunc_symbol_p (h))
2224 {
2225 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2226 if (off == (bfd_vma)-1)
2227 {
2228 /* No explicit GOT usage so redirect to the
2229 got.iplt slot. */
2230 base_got = htab->elf.igotplt;
2231 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2232 }
2233 else
2234 {
2235 /* Explicit GOT slots must contain the address
2236 of the PLT slot. This will be handled in
2237 finish_dynamic_symbol. */
2238 }
2239 }
0e1862bb
L		 2240 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2241 bfd_link_pic (info),
2242 h)
2243 || (bfd_link_pic (info)
470b557a
AK		 2244 && SYMBOL_REFERENCES_LOCAL (info, h))
2245 || (ELF_ST_VISIBILITY (h->other)
2246 && h->root.type == bfd_link_hash_undefweak))
2247
26e41594
AM		 2248 {
2249 /* This is actually a static link, or it is a
2250 -Bsymbolic link and the symbol is defined
2251 locally, or the symbol was forced to be local
2252 because of a version file. We must initialize
2253 this entry in the global offset table. Since the
2254 offset must always be a multiple of 2, we use the
2255 least significant bit to record whether we have
2256 initialized it already.
2257
2258 When doing a dynamic link, we create a .rel.got
2259 relocation entry to initialize the value. This
2260 is done in the finish_dynamic_symbol routine. */
2261 if ((off & 1) != 0)
2262 off &= ~1;
2263 else
2264 {
a85d7ed0 2265 bfd_put_32 (output_bfd, relocation,
470b557a 2266 base_got->contents + off);
26e41594
AM		 2267 h->got.offset |= 1;
2268 }
a63cc5f7
AK		 2269
2270 if ((h->def_regular
0e1862bb 2271 && bfd_link_pic (info)
a63cc5f7
AK		 2272 && SYMBOL_REFERENCES_LOCAL (info, h))
2273 /* lrl rx,sym@GOTENT -> larl rx, sym */
2274 && ((r_type == R_390_GOTENT
2275 && (bfd_get_16 (input_bfd,
2276 contents + rel->r_offset - 2)
2277 & 0xff0f) == 0xc40d)
2278 /* ly rx, sym@GOT(r12) -> larl rx, sym */
2279 || (r_type == R_390_GOT20
2280 && (bfd_get_32 (input_bfd,
2281 contents + rel->r_offset - 2)
2282 & 0xff00f000) == 0xe300c000
2283 && bfd_get_8 (input_bfd,
2284 contents + rel->r_offset + 3) == 0x58)))
2285 {
2286 unsigned short new_insn =
2287 (0xc000 | (bfd_get_8 (input_bfd,
2288 contents + rel->r_offset - 1) & 0xf0));
2289 bfd_put_16 (output_bfd, new_insn,
2290 contents + rel->r_offset - 2);
2291 r_type = R_390_PC32DBL;
2292 rel->r_addend = 2;
2293 howto = elf_howto_table + r_type;
2294 relocation = h->root.u.def.value
2295 + h->root.u.def.section->output_section->vma
2296 + h->root.u.def.section->output_offset;
2297 goto do_relocation;
2298 }
26e41594 2299 }
0451c93c 2300 else
b34976b6 2301 unresolved_reloc = FALSE;
26e41594
AM		 2302 }
2303 else
2304 {
0451c93c
MS		 2305 if (local_got_offsets == NULL)
2306 abort ();
a85d7ed0 2307
26e41594 2308 off = local_got_offsets[r_symndx];
a85d7ed0 2309
26e41594
AM		 2310 /* The offset must always be a multiple of 4. We use
2311 the least significant bit to record whether we have
2312 already generated the necessary reloc. */
2313 if ((off & 1) != 0)
2314 off &= ~1;
2315 else
2316 {
2317 bfd_put_32 (output_bfd, relocation,
f41345a7 2318 htab->elf.sgot->contents + off);
a85d7ed0 2319
0e1862bb 2320 if (bfd_link_pic (info))
26e41594
AM		 2321 {
2322 asection *srelgot;
2323 Elf_Internal_Rela outrel;
947216bf 2324 bfd_byte *loc;
a85d7ed0 2325
f41345a7 2326 srelgot = htab->elf.srelgot;
0451c93c
MS		 2327 if (srelgot == NULL)
2328 abort ();
a85d7ed0 2329
f41345a7
AK		 2330 outrel.r_offset = (htab->elf.sgot->output_section->vma
2331 + htab->elf.sgot->output_offset
26e41594
AM		 2332 + off);
2333 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2334 outrel.r_addend = relocation;
947216bf
AM		 2335 loc = srelgot->contents;
2336 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
26e41594
AM		 2337 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2338 }
a85d7ed0 2339
26e41594
AM		 2340 local_got_offsets[r_symndx] |= 1;
2341 }
2342 }
a85d7ed0 2343
0451c93c
MS		 2344 if (off >= (bfd_vma) -2)
2345 abort ();
a85d7ed0 2346
470b557a 2347 relocation = base_got->output_offset + off;
befc3abb 2348
ae9a127f
NC		 2349 /* For @GOTENT the relocation is against the offset between
2350 the instruction and the symbols entry in the GOT and not
2351 between the start of the GOT and the symbols entry. We
2352 add the vma of the GOT to get the correct value. */
5236c819
MS		 2353 if ( r_type == R_390_GOTENT
2354 || r_type == R_390_GOTPLTENT)
470b557a 2355 relocation += base_got->output_section->vma;
befc3abb 2356
26e41594 2357 break;
dc810e39 2358
5236c819 2359 case R_390_GOTOFF16:
26e41594
AM		 2360 case R_390_GOTOFF32:
2361 /* Relocation is relative to the start of the global offset
2362 table. */
2363
01a53584
AK		 2364 if (h != NULL
2365 && s390_is_ifunc_symbol_p (h)
2366 && h->def_regular
2367 && !bfd_link_executable (info))
2368 {
2369 relocation = (htab->elf.iplt->output_section->vma
2370 + htab->elf.iplt->output_offset
2371 + h->plt.offset
2372 - htab->elf.sgot->output_section->vma);
2373 goto do_relocation;
2374 }
2375
26e41594
AM		 2376 /* Note that sgot->output_offset is not involved in this
2377 calculation. We always want the start of .got. If we
2378 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2379 permitted by the ABI, we might have to change this
2380 calculation. */
f41345a7 2381 relocation -= htab->elf.sgot->output_section->vma;
26e41594
AM		 2382 break;
2383
2384 case R_390_GOTPC:
befc3abb 2385 case R_390_GOTPCDBL:
26e41594 2386 /* Use global offset table as symbol value. */
f41345a7 2387 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2388 unresolved_reloc = FALSE;
26e41594 2389 break;
a85d7ed0 2390
fb798c50 2391 case R_390_PLT12DBL:
26e41594 2392 case R_390_PLT16DBL:
fb798c50 2393 case R_390_PLT24DBL:
26e41594
AM		 2394 case R_390_PLT32DBL:
2395 case R_390_PLT32:
2396 /* Relocation is to the entry for this symbol in the
2397 procedure linkage table. */
a85d7ed0 2398
26e41594
AM		 2399 /* Resolve a PLT32 reloc against a local symbol directly,
2400 without using the procedure linkage table. */
2401 if (h == NULL)
2402 break;
a85d7ed0 2403
26e41594 2404 if (h->plt.offset == (bfd_vma) -1
470b557a 2405 || (htab->elf.splt == NULL && htab->elf.iplt == NULL))
26e41594
AM		 2406 {
2407 /* We didn't make a PLT entry for this symbol. This
2408 happens when statically linking PIC code, or when
2409 using -Bsymbolic. */
2410 break;
2411 }
2412
470b557a
AK		 2413 if (s390_is_ifunc_symbol_p (h))
2414 relocation = (htab->elf.iplt->output_section->vma
07d6d2b8 2415 + htab->elf.iplt->output_offset
470b557a
AK		 2416 + h->plt.offset);
2417 else
2418 relocation = (htab->elf.splt->output_section->vma
2419 + htab->elf.splt->output_offset
2420 + h->plt.offset);
b34976b6 2421 unresolved_reloc = FALSE;
26e41594 2422 break;
a85d7ed0 2423
5236c819
MS		 2424 case R_390_PLTOFF16:
2425 case R_390_PLTOFF32:
26e41594
AM		 2426 /* Relocation is to the entry for this symbol in the
2427 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2428
2429 /* For local symbols or if we didn't make a PLT entry for
2430 this symbol resolve the symbol directly. */
31db78f6 2431 if (h == NULL
5236c819 2432 || h->plt.offset == (bfd_vma) -1
31db78f6 2433 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2434 {
f41345a7 2435 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS		 2436 break;
2437 }
2438
470b557a
AK		 2439 if (s390_is_ifunc_symbol_p (h))
2440 relocation = (htab->elf.iplt->output_section->vma
2441 + htab->elf.iplt->output_offset
2442 + h->plt.offset
2443 - htab->elf.sgot->output_section->vma);
2444 else
2445 relocation = (htab->elf.splt->output_section->vma
2446 + htab->elf.splt->output_offset
2447 + h->plt.offset
2448 - htab->elf.sgot->output_section->vma);
5236c819 2449 unresolved_reloc = FALSE;
26e41594
AM		 2450 break;
2451
26e41594 2452 case R_390_PC16:
fb798c50 2453 case R_390_PC12DBL:
26e41594 2454 case R_390_PC16DBL:
fb798c50 2455 case R_390_PC24DBL:
26e41594
AM		 2456 case R_390_PC32DBL:
2457 case R_390_PC32:
99ba5125
AK		 2458 if (h != NULL
2459 && s390_is_ifunc_symbol_p (h)
2460 && h->def_regular
2461 && !bfd_link_executable (info))
2462 {
2463 /* This will not work our if the function does not
2464 happen to set up the GOT pointer for some other
2465 reason. 31 bit PLT entries require r12 to hold the
2466 GOT pointer.
2467 FIXME: Implement an errorcheck.
2468 NOTE: It will work when brasl is not available
2469 (e.g. with -m31 -march=g5) since a local function
2470 call then does use GOTOFF which implies r12 being set
2471 up. */
2472 relocation = (htab->elf.iplt->output_section->vma
2473 + htab->elf.iplt->output_offset
2474 + h ->plt.offset);
2475 goto do_relocation;
2476 }
1a0670f3 2477 /* Fall through. */
99ba5125
AK		 2478
2479 case R_390_8:
2480 case R_390_16:
2481 case R_390_32:
f657f8c4
NC		 2482 if ((input_section->flags & SEC_ALLOC) == 0)
2483 break;
2484
470b557a
AK		 2485 if (h != NULL
2486 && s390_is_ifunc_symbol_p (h)
2487 && h->def_regular)
2488 {
d7ab4911 2489 if (!bfd_link_pic (info))
470b557a
AK		 2490 {
2491 /* For a non-shared object STT_GNU_IFUNC symbol must
2492 go through PLT. */
2493 relocation = (htab->elf.iplt->output_section->vma
2494 + htab->elf.iplt->output_offset
2495 + h ->plt.offset);
2496 goto do_relocation;
2497 }
2498 else
2499 {
2500 /* For shared objects a runtime relocation is needed. */
2501
2502 Elf_Internal_Rela outrel;
2503 asection *sreloc;
2504
2505 /* Need a dynamic relocation to get the real function
2506 address. */
2507 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2508 info,
2509 input_section,
2510 rel->r_offset);
2511 if (outrel.r_offset == (bfd_vma) -1
2512 || outrel.r_offset == (bfd_vma) -2)
2513 abort ();
2514
2515 outrel.r_offset += (input_section->output_section->vma
2516 + input_section->output_offset);
2517
2518 if (h->dynindx == -1
2519 || h->forced_local
0e1862bb 2520 || bfd_link_executable (info))
470b557a
AK		 2521 {
2522 /* This symbol is resolved locally. */
2523 outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
2524 outrel.r_addend = (h->root.u.def.value
2525 + h->root.u.def.section->output_section->vma
2526 + h->root.u.def.section->output_offset);
2527 }
2528 else
2529 {
2530 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2531 outrel.r_addend = 0;
2532 }
2533
2534 sreloc = htab->elf.irelifunc;
2535 elf_append_rela (output_bfd, sreloc, &outrel);
2536
2537 /* If this reloc is against an external symbol, we
2538 do not want to fiddle with the addend. Otherwise,
2539 we need to include the symbol value so that it
2540 becomes an addend for the dynamic reloc. For an
2541 internal symbol, we have updated addend. */
2542 continue;
2543 }
2544 }
2545
0e1862bb 2546 if ((bfd_link_pic (info)
82058a73 2547 && (h == NULL
b27bb18f
L		 2548 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2549 && !resolved_to_zero)
82058a73 2550 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2551 && ((r_type != R_390_PC16
fb798c50 2552 && r_type != R_390_PC12DBL
0451c93c 2553 && r_type != R_390_PC16DBL
fb798c50 2554 && r_type != R_390_PC24DBL
befc3abb 2555 && r_type != R_390_PC32DBL
0451c93c 2556 && r_type != R_390_PC32)
8c21ca21 2557 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810 2558 || (ELIMINATE_COPY_RELOCS
0e1862bb 2559 && !bfd_link_pic (info)
0451c93c
MS		 2560 && h != NULL
2561 && h->dynindx != -1
f5385ebf
AM		 2562 && !h->non_got_ref
2563 && ((h->def_dynamic
2564 && !h->def_regular)
0451c93c
MS		 2565 || h->root.type == bfd_link_hash_undefweak
2566 || h->root.type == bfd_link_hash_undefined)))
26e41594
AM		 2567 {
2568 Elf_Internal_Rela outrel;
2569 bfd_boolean skip, relocate;
0451c93c 2570 asection *sreloc;
947216bf 2571 bfd_byte *loc;
ec338859 2572
0451c93c
MS		 2573 /* When generating a shared object, these relocations
2574 are copied into the output file to be resolved at run
2575 time. */
ec338859 2576
26e41594
AM		 2577 skip = FALSE;
2578 relocate = FALSE;
ec338859 2579
c629eae0
JJ		 2580 outrel.r_offset =
2581 _bfd_elf_section_offset (output_bfd, info, input_section,
2582 rel->r_offset);
2583 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2584 skip = TRUE;
0bb2d96a 2585 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2586 skip = TRUE, relocate = TRUE;
26e41594
AM		 2587 outrel.r_offset += (input_section->output_section->vma
2588 + input_section->output_offset);
ec338859 2589
26e41594 2590 if (skip)
0bb2d96a 2591 memset (&outrel, 0, sizeof outrel);
26e41594 2592 else if (h != NULL
0451c93c
MS		 2593 && h->dynindx != -1
2594 && (r_type == R_390_PC16
fb798c50 2595 || r_type == R_390_PC12DBL
0451c93c 2596 || r_type == R_390_PC16DBL
fb798c50 2597 || r_type == R_390_PC24DBL
befc3abb 2598 || r_type == R_390_PC32DBL
0451c93c 2599 || r_type == R_390_PC32
0e1862bb 2600 || !bfd_link_pic (info)
8c21ca21 2601 || !SYMBOLIC_BIND (info, h)
f5385ebf 2602 || !h->def_regular))
26e41594
AM		 2603 {
2604 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
27018c3f 2605 outrel.r_addend = rel->r_addend;
26e41594
AM		 2606 }
2607 else
2608 {
0451c93c 2609 /* This symbol is local, or marked to become local. */
90ced0dd 2610 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2611 if (r_type == R_390_32)
2612 {
2613 relocate = TRUE;
2614 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2615 }
2616 else
2617 {
2618 long sindx;
2619
90ced0dd 2620 if (bfd_is_abs_section (sec))
b5727d75
MS		 2621 sindx = 0;
2622 else if (sec == NULL || sec->owner == NULL)
2623 {
2624 bfd_set_error(bfd_error_bad_value);
2625 return FALSE;
2626 }
2627 else
2628 {
2629 asection *osec;
2630
2631 osec = sec->output_section;
2632 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2633 if (sindx == 0)
2634 {
2635 osec = htab->elf.text_index_section;
2636 sindx = elf_section_data (osec)->dynindx;
2637 }
2638 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2639
2640 /* We are turning this relocation into one
2641 against a section symbol, so subtract out
2642 the output section's address but not the
2643 offset of the input section in the output
2644 section. */
90ced0dd 2645 outrel.r_addend -= osec->vma;
b5727d75
MS		 2646 }
2647 outrel.r_info = ELF32_R_INFO (sindx, r_type);
b5727d75 2648 }
26e41594 2649 }
ec338859 2650
0451c93c
MS		 2651 sreloc = elf_section_data (input_section)->sreloc;
2652 if (sreloc == NULL)
2653 abort ();
ec338859 2654
947216bf
AM		 2655 loc = sreloc->contents;
2656 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 2657 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
ec338859 2658
26e41594
AM		 2659 /* If this reloc is against an external symbol, we do
2660 not want to fiddle with the addend. Otherwise, we
2661 need to include the symbol value so that it becomes
2662 an addend for the dynamic reloc. */
2663 if (! relocate)
2664 continue;
2665 }
0451c93c 2666 break;
ec338859 2667
69fc87f1
MS		 2668 /* Relocations for tls literal pool entries. */
2669 case R_390_TLS_IE32:
0e1862bb 2670 if (bfd_link_pic (info))
69fc87f1
MS		 2671 {
2672 Elf_Internal_Rela outrel;
2673 asection *sreloc;
2674 bfd_byte *loc;
2675
2676 outrel.r_offset = rel->r_offset
2677 + input_section->output_section->vma
2678 + input_section->output_offset;
2679 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2680 sreloc = elf_section_data (input_section)->sreloc;
2681 if (sreloc == NULL)
2682 abort ();
2683 loc = sreloc->contents;
2684 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2685 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2686 }
ae9a127f 2687 /* Fall through. */
69fc87f1
MS		 2688
2689 case R_390_TLS_GD32:
2690 case R_390_TLS_GOTIE32:
2691 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2692 tls_type = GOT_UNKNOWN;
2693 if (h == NULL && local_got_offsets)
2694 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2695 else if (h != NULL)
2696 {
2697 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb
L		 2698 if (!bfd_link_pic (info)
2699 && h->dynindx == -1
2700 && tls_type >= GOT_TLS_IE)
69fc87f1
MS		 2701 r_type = R_390_TLS_LE32;
2702 }
2703 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2704 r_type = R_390_TLS_IE32;
2705
2706 if (r_type == R_390_TLS_LE32)
2707 {
2708 /* This relocation gets optimized away by the local exec
2709 access optimization. */
2710 BFD_ASSERT (! unresolved_reloc);
2711 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2712 contents + rel->r_offset);
2713 continue;
2714 }
2715
f41345a7 2716 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2717 abort ();
2718
2719 if (h != NULL)
2720 off = h->got.offset;
2721 else
2722 {
2723 if (local_got_offsets == NULL)
2724 abort ();
2725
2726 off = local_got_offsets[r_symndx];
2727 }
2728
2729 emit_tls_relocs:
2730
2731 if ((off & 1) != 0)
2732 off &= ~1;
26e41594 2733 else
69fc87f1
MS		 2734 {
2735 Elf_Internal_Rela outrel;
2736 bfd_byte *loc;
2737 int dr_type, indx;
2738
f41345a7 2739 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2740 abort ();
2741
f41345a7
AK		 2742 outrel.r_offset = (htab->elf.sgot->output_section->vma
2743 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2744
2745 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2746 if (r_type == R_390_TLS_GD32)
2747 dr_type = R_390_TLS_DTPMOD;
2748 else
2749 dr_type = R_390_TLS_TPOFF;
2750 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2751 outrel.r_addend = relocation - dtpoff_base (info);
2752 else
2753 outrel.r_addend = 0;
2754 outrel.r_info = ELF32_R_INFO (indx, dr_type);
f41345a7
AK		 2755 loc = htab->elf.srelgot->contents;
2756 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2757 * sizeof (Elf32_External_Rela);
2758 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2759
2760 if (r_type == R_390_TLS_GD32)
2761 {
2762 if (indx == 0)
2763 {
26e41594 2764 BFD_ASSERT (! unresolved_reloc);
69fc87f1
MS		 2765 bfd_put_32 (output_bfd,
2766 relocation - dtpoff_base (info),
f41345a7 2767 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2768 }
2769 else
2770 {
2771 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
2772 outrel.r_offset += GOT_ENTRY_SIZE;
2773 outrel.r_addend = 0;
f41345a7 2774 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 2775 loc += sizeof (Elf32_External_Rela);
2776 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2777 }
2778 }
2779
2780 if (h != NULL)
2781 h->got.offset |= 1;
2782 else
2783 local_got_offsets[r_symndx] |= 1;
2784 }
2785
2786 if (off >= (bfd_vma) -2)
2787 abort ();
2788 if (r_type == ELF32_R_TYPE (rel->r_info))
2789 {
f41345a7 2790 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2791 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
f41345a7 2792 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2793 unresolved_reloc = FALSE;
2794 }
2795 else
2796 {
f41345a7 2797 bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 2798 contents + rel->r_offset);
2799 continue;
2800 }
2801 break;
2802
2803 case R_390_TLS_GOTIE12:
bd1ea41b 2804 case R_390_TLS_GOTIE20:
69fc87f1
MS		 2805 case R_390_TLS_IEENT:
2806 if (h == NULL)
2807 {
2808 if (local_got_offsets == NULL)
2809 abort();
2810 off = local_got_offsets[r_symndx];
0e1862bb 2811 if (bfd_link_pic (info))
69fc87f1
MS		 2812 goto emit_tls_relocs;
2813 }
2814 else
2815 {
2816 off = h->got.offset;
2817 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb
L		 2818 if (bfd_link_pic (info)
2819 || h->dynindx != -1
2820 || tls_type < GOT_TLS_IE)
69fc87f1
MS		 2821 goto emit_tls_relocs;
2822 }
2823
f41345a7 2824 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2825 abort ();
2826
2827 BFD_ASSERT (! unresolved_reloc);
2828 bfd_put_32 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 2829 htab->elf.sgot->contents + off);
2830 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2831 if (r_type == R_390_TLS_IEENT)
f41345a7 2832 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2833 unresolved_reloc = FALSE;
2834 break;
2835
2836 case R_390_TLS_LDM32:
0e1862bb 2837 if (! bfd_link_pic (info))
69fc87f1
MS		 2838 /* The literal pool entry this relocation refers to gets ignored
2839 by the optimized code of the local exec model. Do nothing
2840 and the value will turn out zero. */
2841 continue;
2842
f41345a7 2843 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2844 abort ();
2845
2846 off = htab->tls_ldm_got.offset;
2847 if (off & 1)
2848 off &= ~1;
2849 else
2850 {
2851 Elf_Internal_Rela outrel;
2852 bfd_byte *loc;
2853
f41345a7 2854 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2855 abort ();
2856
f41345a7
AK		 2857 outrel.r_offset = (htab->elf.sgot->output_section->vma
2858 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2859
2860 bfd_put_32 (output_bfd, 0,
f41345a7 2861 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2862 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
2863 outrel.r_addend = 0;
f41345a7
AK		 2864 loc = htab->elf.srelgot->contents;
2865 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2866 * sizeof (Elf32_External_Rela);
2867 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2868 htab->tls_ldm_got.offset |= 1;
2869 }
f41345a7 2870 relocation = htab->elf.sgot->output_offset + off;
26e41594 2871 unresolved_reloc = FALSE;
69fc87f1
MS		 2872 break;
2873
2874 case R_390_TLS_LE32:
3cbc1e5e 2875 if (bfd_link_dll (info))
69fc87f1
MS		 2876 {
2877 /* Linking a shared library with non-fpic code requires
2878 a R_390_TLS_TPOFF relocation. */
2879 Elf_Internal_Rela outrel;
2880 asection *sreloc;
2881 bfd_byte *loc;
2882 int indx;
2883
2884 outrel.r_offset = rel->r_offset
2885 + input_section->output_section->vma
2886 + input_section->output_offset;
2887 if (h != NULL && h->dynindx != -1)
2888 indx = h->dynindx;
2889 else
2890 indx = 0;
2891 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
2892 if (indx == 0)
2893 outrel.r_addend = relocation - dtpoff_base (info);
2894 else
2895 outrel.r_addend = 0;
2896 sreloc = elf_section_data (input_section)->sreloc;
2897 if (sreloc == NULL)
2898 abort ();
2899 loc = sreloc->contents;
2900 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2901 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2902 }
2903 else
2904 {
2905 BFD_ASSERT (! unresolved_reloc);
2906 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2907 contents + rel->r_offset);
2908 }
2909 continue;
2910
2911 case R_390_TLS_LDO32:
0e1862bb 2912 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 2913 relocation -= dtpoff_base (info);
2914 else
2915 /* When converting LDO to LE, we must negate. */
2916 relocation = -tpoff (info, relocation);
2917 break;
2918
2919 /* Relocations for tls instructions. */
2920 case R_390_TLS_LOAD:
2921 case R_390_TLS_GDCALL:
2922 case R_390_TLS_LDCALL:
2923 tls_type = GOT_UNKNOWN;
2924 if (h == NULL && local_got_offsets)
2925 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2926 else if (h != NULL)
2927 tls_type = elf_s390_hash_entry(h)->tls_type;
2928
2929 if (tls_type == GOT_TLS_GD)
2930 continue;
2931
2932 if (r_type == R_390_TLS_LOAD)
2933 {
0e1862bb 2934 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 2935 {
2936 /* IE->LE transition. Four valid cases:
2937 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
2938 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
2939 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
2940 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2941 unsigned int insn, ry;
2942
2943 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
69fc87f1
MS		 2944 if ((insn & 0xff00f000) == 0x58000000)
2945 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
2946 ry = (insn & 0x000f0000);
2947 else if ((insn & 0xff0f0000) == 0x58000000)
2948 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
2949 ry = (insn & 0x0000f000) << 4;
2950 else if ((insn & 0xff00f000) == 0x5800c000)
2951 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
2952 ry = (insn & 0x000f0000);
2953 else if ((insn & 0xff0f0000) == 0x580c0000)
2954 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2955 ry = (insn & 0x0000f000) << 4;
2956 else
3704e358
AK		 2957 {
2958 invalid_tls_insn (input_bfd, input_section, rel);
2959 return FALSE;
2960 }
69fc87f1
MS		 2961 insn = 0x18000700 | (insn & 0x00f00000) | ry;
2962 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
2963 }
2964 }
2965 else if (r_type == R_390_TLS_GDCALL)
2966 {
2967 unsigned int insn;
2968
2969 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 2970 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 2971 (insn & 0xffff0000) != 0xc0e50000 &&
2972 (insn & 0xff000000) != 0x0d000000)
3704e358
AK		 2973 {
2974 invalid_tls_insn (input_bfd, input_section, rel);
2975 return FALSE;
2976 }
0e1862bb 2977 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
77df2968 2978 {
d0ddfe27
AK		 2979 if ((insn & 0xff000000) == 0x0d000000)
2980 {
2981 /* GD->LE transition.
2982 basr rx, ry -> nopr r7 */
2983 insn = 0x07070000 | (insn & 0xffff);
2984 }
2985 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 2986 {
2987 /* GD->LE transition.
2988 bas %r14,0(%rx,%r13) -> bc 0,0 */
2989 insn = 0x47000000;
2990 }
2991 else
2992 {
2993 /* GD->LE transition.
d0ddfe27 2994 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 2995 insn = 0xc0040000;
2996 bfd_put_16 (output_bfd, 0x0000,
2997 contents + rel->r_offset + 4);
2998 }
2999 }
69fc87f1 3000 else
77df2968 3001 {
d0ddfe27
AK		 3002 /* If basr is used in the pic case to invoke
3003 _tls_get_offset, something went wrong before. */
3004 if ((insn & 0xff000000) == 0x0d000000)
3704e358
AK		 3005 {
3006 invalid_tls_insn (input_bfd, input_section, rel);
3007 return FALSE;
3008 }
d0ddfe27 3009
77df2968
MS		 3010 if ((insn & 0xff000000) == 0x4d000000)
3011 {
3012 /* GD->IE transition.
3013 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3014 insn = 0x5822c000;
3015 }
3016 else
3017 {
3018 /* GD->IE transition.
3019 brasl %r14,__tls_get_addr@plt ->
07d6d2b8 3020 l %r2,0(%r2,%r12) ; bcr 0,0 */
77df2968
MS		 3021 insn = 0x5822c000;
3022 bfd_put_16 (output_bfd, 0x0700,
3023 contents + rel->r_offset + 4);
3024 }
3025 }
69fc87f1
MS		 3026 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3027 }
3028 else if (r_type == R_390_TLS_LDCALL)
3029 {
0e1862bb 3030 if (!bfd_link_pic (info))
69fc87f1
MS		 3031 {
3032 unsigned int insn;
3033
3034 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3035 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 3036 (insn & 0xffff0000) != 0xc0e50000 &&
3037 (insn & 0xff000000) != 0x0d000000)
3704e358
AK		 3038 {
3039 invalid_tls_insn (input_bfd, input_section, rel);
3040 return FALSE;
3041 }
d0ddfe27
AK		 3042
3043 if ((insn & 0xff000000) == 0x0d000000)
3044 {
3045 /* LD->LE transition.
3046 basr rx, ry -> nopr r7 */
3047 insn = 0x07070000 | (insn & 0xffff);
3048 }
3049 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 3050 {
3051 /* LD->LE transition.
3052 bas %r14,0(%rx,%r13) -> bc 0,0 */
3053 insn = 0x47000000;
3054 }
3055 else
3056 {
3057 /* LD->LE transition.
d0ddfe27 3058 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 3059 insn = 0xc0040000;
3060 bfd_put_16 (output_bfd, 0x0000,
3061 contents + rel->r_offset + 4);
3062 }
69fc87f1
MS		 3063 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3064 }
3065 }
3066 continue;
3067
0451c93c
MS		 3068 default:
3069 break;
3070 }
ec338859 3071
239e1f3a
AM		 3072 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3073 because such sections are not SEC_ALLOC and thus ld.so will
3074 not process them. */
0451c93c 3075 if (unresolved_reloc
239e1f3a 3076 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3077 && h->def_dynamic)
3078 && _bfd_elf_section_offset (output_bfd, info, input_section,
3079 rel->r_offset) != (bfd_vma) -1)
4eca0228 3080 _bfd_error_handler
695344c0 3081 /* xgettext:c-format */
2dcf00ce
AM		 3082 (_("%pB(%pA+%#" PRIx64 "): "
3083 "unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3084 input_bfd,
3085 input_section,
2dcf00ce 3086 (uint64_t) rel->r_offset,
843fe662 3087 howto->name,
0451c93c 3088 h->root.root.string);
ec338859 3089
470b557a
AK		 3090 do_relocation:
3091
fb798c50
AK		 3092 /* When applying a 24 bit reloc we need to start one byte
3093 earlier. Otherwise the 32 bit get/put bfd operations might
3094 access a byte after the actual section. */
3095 if (r_type == R_390_PC24DBL
3096 || r_type == R_390_PLT24DBL)
3097 rel->r_offset--;
3098
bd1ea41b
MS		 3099 if (r_type == R_390_20
3100 || r_type == R_390_GOT20
3101 || r_type == R_390_GOTPLT20
3102 || r_type == R_390_TLS_GOTIE20)
3103 {
3104 relocation += rel->r_addend;
3105 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3106 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3107 contents, rel->r_offset,
3108 relocation, 0);
3109 }
3110 else
3111 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3112 contents, rel->r_offset,
3113 relocation, rel->r_addend);
ec338859 3114
a85d7ed0
NC		 3115 if (r != bfd_reloc_ok)
3116 {
0451c93c 3117 const char *name;
ec338859 3118
0451c93c
MS		 3119 if (h != NULL)
3120 name = h->root.root.string;
3121 else
a85d7ed0 3122 {
0451c93c
MS		 3123 name = bfd_elf_string_from_elf_section (input_bfd,
3124 symtab_hdr->sh_link,
3125 sym->st_name);
3126 if (name == NULL)
b34976b6 3127 return FALSE;
0451c93c 3128 if (*name == '\0')
fd361982 3129 name = bfd_section_name (sec);
0451c93c 3130 }
ec338859 3131
0451c93c 3132 if (r == bfd_reloc_overflow)
1a72702b
AM		 3133 (*info->callbacks->reloc_overflow)
3134 (info, (h ? &h->root : NULL), name, howto->name,
3135 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
0451c93c
MS		 3136 else
3137 {
4eca0228 3138 _bfd_error_handler
695344c0 3139 /* xgettext:c-format */
2dcf00ce 3140 (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"),
d003868e 3141 input_bfd, input_section,
2dcf00ce 3142 (uint64_t) rel->r_offset, name, (int) r);
b34976b6 3143 return FALSE;
a85d7ed0
NC		 3144 }
3145 }
3146 }
ec338859 3147
b34976b6 3148 return TRUE;
a85d7ed0
NC		 3149}
3150
470b557a
AK		 3151/* Generate the PLT slots together with the dynamic relocations needed
3152 for IFUNC symbols. */
3153
3154static void
3155elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3156 struct bfd_link_info *info,
3157 struct elf_link_hash_entry *h,
3158 struct elf_s390_link_hash_table *htab,
3159 bfd_vma iplt_offset,
3160 bfd_vma resolver_address)
3161{
3162 bfd_vma iplt_index;
3163 bfd_vma got_offset;
3164 bfd_vma igotiplt_offset;
3165 Elf_Internal_Rela rela;
3166 bfd_byte *loc;
3167 asection *plt, *gotplt, *relplt;
3168 bfd_vma relative_offset;
3169
3170 if (htab->elf.iplt == NULL
3171 || htab->elf.igotplt == NULL
3172 || htab->elf.irelplt == NULL)
3173 abort ();
3174
3175 gotplt = htab->elf.igotplt;
3176 relplt = htab->elf.irelplt;
3177
3178 /* Index of the PLT slot within iplt section. */
3179 iplt_index = iplt_offset / PLT_ENTRY_SIZE;
3180 plt = htab->elf.iplt;
3181 /* Offset into the igot.plt section. */
3182 igotiplt_offset = iplt_index * GOT_ENTRY_SIZE;
3183 /* Offset into the got section. */
3184 got_offset = igotiplt_offset + gotplt->output_offset;
3185
3186 /* S390 uses halfwords for relative branch calc! */
3187 relative_offset = - (plt->output_offset +
3188 (PLT_ENTRY_SIZE * iplt_index) + 18) / 2;
ceada896
AA		 3189 /* If offset is > 32768, branch to a previous branch
3190 390 can only handle +-64 K jumps. */
470b557a
AK		 3191 if ( -32768 > (int) relative_offset )
3192 relative_offset
3193 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3194
3195 /* Fill in the entry in the procedure linkage table. */
0e1862bb 3196 if (!bfd_link_pic (info))
470b557a
AK		 3197 {
3198 memcpy (plt->contents + iplt_offset, elf_s390_plt_entry,
3199 PLT_ENTRY_SIZE);
3200
3201 /* Adjust jump to the first plt entry. */
3202 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3203 plt->contents + iplt_offset + 20);
3204
3205 /* Push the GOT offset field. */
3206 bfd_put_32 (output_bfd,
3207 (gotplt->output_section->vma
3208 + got_offset),
3209 plt->contents + iplt_offset + 24);
3210 }
3211 else if (got_offset < 4096)
3212 {
3213 /* The GOT offset is small enough to be used directly as
3214 displacement. */
3215 memcpy (plt->contents + iplt_offset,
3216 elf_s390_plt_pic12_entry,
3217 PLT_ENTRY_SIZE);
3218
3219 /* Put in the GOT offset as displacement value. The 0xc000
3220 value comes from the first word of the plt entry. Look
3221 at the elf_s390_plt_pic16_entry content. */
3222 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3223 plt->contents + iplt_offset + 2);
3224
3225 /* Adjust the jump to the first plt entry. */
3226 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3227 plt->contents + iplt_offset + 20);
3228 }
3229 else if (got_offset < 32768)
3230 {
3231 /* The GOT offset is too big for a displacement but small
3232 enough to be a signed 16 bit immediate value as it can be
3233 used in an lhi instruction. */
3234 memcpy (plt->contents + iplt_offset,
3235 elf_s390_plt_pic16_entry,
3236 PLT_ENTRY_SIZE);
3237
3238 /* Put in the GOT offset for the lhi instruction. */
3239 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3240 plt->contents + iplt_offset + 2);
3241
3242 /* Adjust the jump to the first plt entry. */
3243 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3244 plt->contents + iplt_offset + 20);
3245 }
3246 else
3247 {
3248 memcpy (plt->contents + iplt_offset,
3249 elf_s390_plt_pic_entry,
3250 PLT_ENTRY_SIZE);
3251
3252 /* Adjust the jump to the first plt entry. */
3253 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3254 plt->contents + iplt_offset + 20);
3255
3256 /* Push the GOT offset field. */
3257 bfd_put_32 (output_bfd, got_offset,
3258 plt->contents + iplt_offset + 24);
3259 }
3260 /* Insert offset into reloc. table here. */
3261 bfd_put_32 (output_bfd, relplt->output_offset +
3262 iplt_index * RELA_ENTRY_SIZE,
3263 plt->contents + iplt_offset + 28);
3264
3265 /* Fill in the entry in the global offset table.
3266 Points to instruction after GOT offset. */
3267 bfd_put_32 (output_bfd,
3268 (plt->output_section->vma
3269 + plt->output_offset
3270 + iplt_offset
3271 + 12),
3272 gotplt->contents + igotiplt_offset);
3273
3274 /* Fill in the entry in the .rela.plt section. */
3275 rela.r_offset = gotplt->output_section->vma + got_offset;
3276
3277 if (!h
3278 || h->dynindx == -1
0e1862bb 3279 || ((bfd_link_executable (info)
470b557a
AK		 3280 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3281 && h->def_regular))
3282 {
3283 /* The symbol can be locally resolved. */
3284 rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
3285 rela.r_addend = resolver_address;
3286 }
3287 else
3288 {
3289 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3290 rela.r_addend = 0;
3291 }
3292
3293 loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE;
3294 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3295}
3296
a85d7ed0
NC		 3297/* Finish up dynamic symbol handling. We set the contents of various
3298 dynamic sections here. */
3299
b34976b6 3300static bfd_boolean
2c3fc389
NC		 3301elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3302 struct bfd_link_info *info,
3303 struct elf_link_hash_entry *h,
3304 Elf_Internal_Sym *sym)
a85d7ed0 3305{
0451c93c 3306 struct elf_s390_link_hash_table *htab;
470b557a 3307 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
ec338859 3308
0451c93c 3309 htab = elf_s390_hash_table (info);
ec338859 3310
a85d7ed0
NC		 3311 if (h->plt.offset != (bfd_vma) -1)
3312 {
0451c93c
MS		 3313 bfd_vma plt_index;
3314 bfd_vma got_offset;
a85d7ed0 3315 Elf_Internal_Rela rela;
947216bf 3316 bfd_byte *loc;
a85d7ed0 3317 bfd_vma relative_offset;
ec338859 3318
a85d7ed0 3319 /* This symbol has an entry in the procedure linkage table. Set
26e41594 3320 it up. */
0a511368 3321 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
0451c93c 3322 {
0a511368
AK		 3323 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3324 htab, h->plt.offset,
3325 eh->ifunc_resolver_address +
3326 eh->ifunc_resolver_section->output_offset +
3327 eh->ifunc_resolver_section->output_section->vma);
3328 /* Do not return yet. Handling of explicit GOT slots of
3329 IFUNC symbols is below. */
0451c93c 3330 }
a85d7ed0 3331 else
0451c93c 3332 {
470b557a
AK		 3333 if (h->dynindx == -1
3334 || htab->elf.splt == NULL
3335 || htab->elf.sgotplt == NULL
3336 || htab->elf.srelplt == NULL)
3337 abort ();
9aa17453 3338
470b557a
AK		 3339 /* Calc. index no.
3340 Current offset - size first entry / entry size. */
3341 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9aa17453 3342
470b557a
AK		 3343 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3344 addr & GOT addr. */
3345 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3346
470b557a
AK		 3347 /* S390 uses halfwords for relative branch calc! */
3348 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3349 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3350 /* If offset is > 32768, branch to a previous branch
3351 390 can only handle +-64 K jumps. */
3352 if ( -32768 > (int) relative_offset )
3353 relative_offset
3354 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
ec338859 3355
470b557a 3356 /* Fill in the entry in the procedure linkage table. */
0e1862bb 3357 if (!bfd_link_pic (info))
470b557a
AK		 3358 {
3359 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry,
3360 PLT_ENTRY_SIZE);
3361
3362 /* Adjust jump to the first plt entry. */
3363 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3364 htab->elf.splt->contents + h->plt.offset + 20);
3365
3366 /* Push the GOT offset field. */
3367 bfd_put_32 (output_bfd,
3368 (htab->elf.sgotplt->output_section->vma
3369 + htab->elf.sgotplt->output_offset
3370 + got_offset),
3371 htab->elf.splt->contents + h->plt.offset + 24);
3372 }
3373 else if (got_offset < 4096)
3374 {
3375 /* The GOT offset is small enough to be used directly as
3376 displacement. */
3377 memcpy (htab->elf.splt->contents + h->plt.offset,
3378 elf_s390_plt_pic12_entry,
3379 PLT_ENTRY_SIZE);
3380
3381 /* Put in the GOT offset as displacement value. The 0xc000
3382 value comes from the first word of the plt entry. Look
3b67f094 3383 at the elf_s390_plt_pic12_entry content. */
470b557a
AK		 3384 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3385 htab->elf.splt->contents + h->plt.offset + 2);
3386
3387 /* Adjust the jump to the first plt entry. */
3388 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3389 htab->elf.splt->contents + h->plt.offset + 20);
3390 }
3391 else if (got_offset < 32768)
3392 {
3393 /* The GOT offset is too big for a displacement but small
3394 enough to be a signed 16 bit immediate value as it can be
3395 used in an lhi instruction. */
3396 memcpy (htab->elf.splt->contents + h->plt.offset,
3397 elf_s390_plt_pic16_entry,
3398 PLT_ENTRY_SIZE);
3399
3400 /* Put in the GOT offset for the lhi instruction. */
3401 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3402 htab->elf.splt->contents + h->plt.offset + 2);
3403
3404 /* Adjust the jump to the first plt entry. */
3405 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3406 htab->elf.splt->contents + h->plt.offset + 20);
3407 }
3408 else
3409 {
3410 memcpy (htab->elf.splt->contents + h->plt.offset,
3411 elf_s390_plt_pic_entry,
3412 PLT_ENTRY_SIZE);
3413
3414 /* Adjust the jump to the first plt entry. */
3415 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3416 htab->elf.splt->contents + h->plt.offset + 20);
3417
3418 /* Push the GOT offset field. */
3419 bfd_put_32 (output_bfd, got_offset,
3420 htab->elf.splt->contents + h->plt.offset + 24);
3421 }
3422 /* Insert offset into reloc. table here. */
3423 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3424 htab->elf.splt->contents + h->plt.offset + 28);
3425
3426 /* Fill in the entry in the global offset table.
3427 Points to instruction after GOT offset. */
3428 bfd_put_32 (output_bfd,
3429 (htab->elf.splt->output_section->vma
3430 + htab->elf.splt->output_offset
3431 + h->plt.offset
3432 + 12),
3433 htab->elf.sgotplt->contents + got_offset);
3434
3435 /* Fill in the entry in the .rela.plt section. */
3436 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3437 + htab->elf.sgotplt->output_offset
3438 + got_offset);
3439 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3440 rela.r_addend = 0;
3441 loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3442 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3443
3444 if (!h->def_regular)
3445 {
3446 /* Mark the symbol as undefined, rather than as defined in
3447 the .plt section. Leave the value alone. This is a clue
3448 for the dynamic linker, to make function pointer
3449 comparisons work between an application and shared
3450 library. */
3451 sym->st_shndx = SHN_UNDEF;
3452 }
a85d7ed0
NC		 3453 }
3454 }
ec338859 3455
69fc87f1
MS		 3456 if (h->got.offset != (bfd_vma) -1
3457 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3458 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3459 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3460 {
a85d7ed0 3461 Elf_Internal_Rela rela;
947216bf 3462 bfd_byte *loc;
a85d7ed0
NC		 3463
3464 /* This symbol has an entry in the global offset table. Set it
26e41594 3465 up. */
a85d7ed0 3466
f41345a7 3467 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3468 abort ();
a85d7ed0 3469
f41345a7
AK		 3470 rela.r_offset = (htab->elf.sgot->output_section->vma
3471 + htab->elf.sgot->output_offset
dc810e39 3472 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0
NC		 3473
3474 /* If this is a static link, or it is a -Bsymbolic link and the
3475 symbol is defined locally or was forced to be local because
3476 of a version file, we just want to emit a RELATIVE reloc.
3477 The entry in the global offset table will already have been
3478 initialized in the relocate_section function. */
470b557a
AK		 3479 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3480 {
0e1862bb 3481 if (bfd_link_pic (info))
470b557a
AK		 3482 {
3483 /* An explicit GOT slot usage needs GLOB_DAT. If the
3484 symbol references local the implicit got.iplt slot
3485 will be used and the IRELATIVE reloc has been created
3486 above. */
3487 goto do_glob_dat;
3488 }
3489 else
3490 {
3491 /* For non-shared objects explicit GOT slots must be
3492 filled with the PLT slot address for pointer
3493 equality reasons. */
3494 bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma
3495 + htab->elf.iplt->output_offset
3496 + h->plt.offset),
3497 htab->elf.sgot->contents + h->got.offset);
3498 return TRUE;
3499 }
3500 }
0e1862bb 3501 else if (bfd_link_pic (info)
ceada896 3502 && SYMBOL_REFERENCES_LOCAL (info, h))
0451c93c 3503 {
470b557a
AK		 3504 /* If this is a static link, or it is a -Bsymbolic link and
3505 the symbol is defined locally or was forced to be local
3506 because of a version file, we just want to emit a
3507 RELATIVE reloc. The entry in the global offset table
3508 will already have been initialized in the
3509 relocate_section function. */
8170f769 3510 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
8c21ca21 3511 return FALSE;
0451c93c
MS		 3512 BFD_ASSERT((h->got.offset & 1) != 0);
3513 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3514 rela.r_addend = (h->root.u.def.value
26e41594
AM		 3515 + h->root.u.def.section->output_section->vma
3516 + h->root.u.def.section->output_offset);
3517 }
a85d7ed0
NC		 3518 else
3519 {
3520 BFD_ASSERT((h->got.offset & 1) == 0);
470b557a 3521 do_glob_dat:
f41345a7 3522 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3523 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
26e41594
AM		 3524 rela.r_addend = 0;
3525 }
a85d7ed0 3526
f41345a7
AK		 3527 loc = htab->elf.srelgot->contents;
3528 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3529 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3530 }
3531
f5385ebf 3532 if (h->needs_copy)
a85d7ed0 3533 {
a85d7ed0 3534 Elf_Internal_Rela rela;
5474d94f 3535 asection *s;
947216bf 3536 bfd_byte *loc;
a85d7ed0
NC		 3537
3538 /* This symbols needs a copy reloc. Set it up. */
3539
0451c93c
MS		 3540 if (h->dynindx == -1
3541 || (h->root.type != bfd_link_hash_defined
3542 && h->root.type != bfd_link_hash_defweak)
5474d94f
AM		 3543 || htab->elf.srelbss == NULL
3544 || htab->elf.sreldynrelro == NULL)
0451c93c 3545 abort ();
a85d7ed0
NC		 3546
3547 rela.r_offset = (h->root.u.def.value
3548 + h->root.u.def.section->output_section->vma
3549 + h->root.u.def.section->output_offset);
3550 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3551 rela.r_addend = 0;
afbf7e8e 3552 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 3553 s = htab->elf.sreldynrelro;
3554 else
3555 s = htab->elf.srelbss;
3556 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3557 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3558 }
3559
3560 /* Mark some specially defined symbols as absolute. */
9637f6ef 3561 if (h == htab->elf.hdynamic
22edb2f1
RS		 3562 || h == htab->elf.hgot
3563 || h == htab->elf.hplt)
a85d7ed0
NC		 3564 sym->st_shndx = SHN_ABS;
3565
b34976b6 3566 return TRUE;
a85d7ed0
NC		 3567}
3568
0451c93c
MS		 3569/* Used to decide how to sort relocs in an optimal manner for the
3570 dynamic linker, before writing them out. */
3571
3572static enum elf_reloc_type_class
7e612e98
AM		 3573elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3574 const asection *rel_sec ATTRIBUTE_UNUSED,
3575 const Elf_Internal_Rela *rela)
0451c93c 3576{
0f042c67
AK		 3577 bfd *abfd = info->output_bfd;
3578 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3579 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3580 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
3581 Elf_Internal_Sym sym;
3582
3583 if (htab->elf.dynsym == NULL
3584 || !bed->s->swap_symbol_in (abfd,
3585 (htab->elf.dynsym->contents
3586 + r_symndx * bed->s->sizeof_sym),
3587 0, &sym))
3588 abort ();
3589
3590 /* Check relocation against STT_GNU_IFUNC symbol. */
3591 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3592 return reloc_class_ifunc;
3593
0451c93c
MS		 3594 switch ((int) ELF32_R_TYPE (rela->r_info))
3595 {
3596 case R_390_RELATIVE:
3597 return reloc_class_relative;
3598 case R_390_JMP_SLOT:
3599 return reloc_class_plt;
3600 case R_390_COPY:
3601 return reloc_class_copy;
3602 default:
3603 return reloc_class_normal;
3604 }
3605}
3606
a85d7ed0
NC		 3607/* Finish up the dynamic sections. */
3608
b34976b6 3609static bfd_boolean
2c3fc389
NC		 3610elf_s390_finish_dynamic_sections (bfd *output_bfd,
3611 struct bfd_link_info *info)
a85d7ed0 3612{
0451c93c 3613 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3614 bfd *dynobj;
3615 asection *sdyn;
470b557a
AK		 3616 bfd *ibfd;
3617 unsigned int i;
a85d7ed0 3618
0451c93c
MS		 3619 htab = elf_s390_hash_table (info);
3620 dynobj = htab->elf.dynobj;
3d4d4302 3621 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3622
0451c93c 3623 if (htab->elf.dynamic_sections_created)
a85d7ed0 3624 {
a85d7ed0
NC		 3625 Elf32_External_Dyn *dyncon, *dynconend;
3626
f41345a7 3627 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3628 abort ();
a85d7ed0
NC		 3629
3630 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 3631 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3632 for (; dyncon < dynconend; dyncon++)
3633 {
3634 Elf_Internal_Dyn dyn;
a85d7ed0 3635 asection *s;
ec338859 3636
a85d7ed0 3637 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3638
a85d7ed0
NC		 3639 switch (dyn.d_tag)
3640 {
3641 default:
0451c93c 3642 continue;
ec338859 3643
a85d7ed0 3644 case DT_PLTGOT:
4ade44b7
AM		 3645 s = htab->elf.sgotplt;
3646 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
0451c93c 3647 break;
ec338859 3648
a85d7ed0 3649 case DT_JMPREL:
4ade44b7
AM		 3650 s = htab->elf.srelplt;
3651 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a85d7ed0
NC		 3652 break;
3653
3654 case DT_PLTRELSZ:
79c12fae
AK		 3655 dyn.d_un.d_val = htab->elf.srelplt->size;
3656 if (htab->elf.irelplt)
3657 dyn.d_un.d_val += htab->elf.irelplt->size;
a85d7ed0
NC		 3658 break;
3659 }
0451c93c
MS		 3660
3661 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3662 }
3663
3664 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3665 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0 3666 {
f41345a7 3667 memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
0e1862bb 3668 if (bfd_link_pic (info))
0451c93c 3669 {
f41345a7 3670 memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry,
9aa17453
AK		 3671 PLT_FIRST_ENTRY_SIZE);
3672 }
26e41594 3673 else
9aa17453 3674 {
f41345a7 3675 memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry,
9aa17453 3676 PLT_FIRST_ENTRY_SIZE);
26e41594 3677 bfd_put_32 (output_bfd,
f41345a7
AK		 3678 htab->elf.sgotplt->output_section->vma
3679 + htab->elf.sgotplt->output_offset,
3680 htab->elf.splt->contents + 24);
ceada896 3681 }
f41345a7 3682 elf_section_data (htab->elf.splt->output_section)
0451c93c 3683 ->this_hdr.sh_entsize = 4;
a85d7ed0
NC		 3684 }
3685
3686 }
3687
f41345a7 3688 if (htab->elf.sgotplt)
a85d7ed0 3689 {
0451c93c 3690 /* Fill in the first three entries in the global offset table. */
f41345a7 3691 if (htab->elf.sgotplt->size > 0)
0451c93c
MS		 3692 {
3693 bfd_put_32 (output_bfd,
3694 (sdyn == NULL ? (bfd_vma) 0
3695 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3696 htab->elf.sgotplt->contents);
0451c93c 3697 /* One entry for shared object struct ptr. */
f41345a7 3698 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4);
0451c93c 3699 /* One entry for _dl_runtime_resolve. */
f41345a7 3700 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3701 }
a85d7ed0 3702
f41345a7 3703 elf_section_data (htab->elf.sgotplt->output_section)
0451c93c
MS		 3704 ->this_hdr.sh_entsize = 4;
3705 }
470b557a 3706 /* Finish dynamic symbol for local IFUNC symbols. */
c72f2fb2 3707 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
470b557a
AK		 3708 {
3709 struct plt_entry *local_plt;
3710 Elf_Internal_Sym *isym;
3711 Elf_Internal_Shdr *symtab_hdr;
3712
3713 symtab_hdr = &elf_symtab_hdr (ibfd);
3714
1ef692ea
AK		 3715 if (!is_s390_elf (ibfd))
3716 continue;
3717
470b557a
AK		 3718 local_plt = elf_s390_local_plt (ibfd);
3719 if (local_plt != NULL)
3720 for (i = 0; i < symtab_hdr->sh_info; i++)
3721 {
3722 if (local_plt[i].plt.offset != (bfd_vma) -1)
3723 {
3724 asection *sec = local_plt[i].sec;
3725 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3726 if (isym == NULL)
3727 return FALSE;
3728
3729 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3730 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3731 local_plt[i].plt.offset,
3732 isym->st_value
3733 + sec->output_section->vma
3734 + sec->output_offset);
3735
3736 }
3737 }
3738 }
b34976b6 3739 return TRUE;
a85d7ed0 3740}
e3e9290d
AA		 3741\f
3742/* Support for core dump NOTE sections. */
a85d7ed0 3743
b34976b6 3744static bfd_boolean
2c3fc389 3745elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note)
979f4a38
NC		 3746{
3747 int offset;
eea6121a 3748 unsigned int size;
979f4a38
NC		 3749
3750 switch (note->descsz)
3751 {
ceada896
AA		 3752 default:
3753 return FALSE;
979f4a38 3754
ceada896
AA		 3755 case 224: /* S/390 Linux. */
3756 /* pr_cursig */
3757 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
979f4a38 3758
ceada896
AA		 3759 /* pr_pid */
3760 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
979f4a38 3761
ceada896
AA		 3762 /* pr_reg */
3763 offset = 72;
3764 size = 144;
3765 break;
979f4a38
NC		 3766 }
3767
3768 /* Make a ".reg/999" section. */
3769 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 3770 size, note->descpos + offset);
979f4a38
NC		 3771}
3772
e3e9290d
AA		 3773static bfd_boolean
3774elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3775{
3776 switch (note->descsz)
3777 {
3778 default:
3779 return FALSE;
3780
3781 case 124: /* sizeof(struct elf_prpsinfo) on s390 */
3782 elf_tdata (abfd)->core->pid
3783 = bfd_get_32 (abfd, note->descdata + 12);
3784 elf_tdata (abfd)->core->program
3785 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
3786 elf_tdata (abfd)->core->command
3787 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
3788 break;
3789 }
3790
3791 /* Note that for some reason, a spurious space is tacked
3792 onto the end of the args in some (at least one anyway)
3793 implementations, so strip it off if it exists. */
3794
3795 {
3796 char *command = elf_tdata (abfd)->core->command;
3797 int n = strlen (command);
3798
3799 if (0 < n && command[n - 1] == ' ')
3800 command[n - 1] = '\0';
3801 }
3802
3803 return TRUE;
3804}
3805
3806static char *
3807elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
3808 int note_type, ...)
3809{
3810 va_list ap;
3811
3812 switch (note_type)
3813 {
3814 default:
3815 return NULL;
3816
3817 case NT_PRPSINFO:
3818 {
602f1657 3819 char data[124] ATTRIBUTE_NONSTRING = { 0 };
e3e9290d
AA		 3820 const char *fname, *psargs;
3821
3822 va_start (ap, note_type);
3823 fname = va_arg (ap, const char *);
3824 psargs = va_arg (ap, const char *);
3825 va_end (ap);
3826
3827 strncpy (data + 28, fname, 16);
898ade12 3828#if GCC_VERSION == 8000 || GCC_VERSION == 8001
95da9854 3829 DIAGNOSTIC_PUSH;
be3e27bb 3830 /* GCC 8.0 and 8.1 warn about 80 equals destination size with
95da9854
L		 3831 -Wstringop-truncation:
3832 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643
3833 */
95da9854
L		 3834 DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION;
3835#endif
e3e9290d 3836 strncpy (data + 44, psargs, 80);
898ade12 3837#if GCC_VERSION == 8000 || GCC_VERSION == 8001
95da9854 3838 DIAGNOSTIC_POP;
fe75810f 3839#endif
e3e9290d
AA		 3840 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3841 &data, sizeof (data));
3842 }
3843
3844 case NT_PRSTATUS:
3845 {
3846 char data[224] = { 0 };
3847 long pid;
3848 int cursig;
3849 const void *gregs;
3850
3851 va_start (ap, note_type);
3852 pid = va_arg (ap, long);
3853 cursig = va_arg (ap, int);
3854 gregs = va_arg (ap, const void *);
3855 va_end (ap);
3856
3857 bfd_put_16 (abfd, cursig, data + 12);
3858 bfd_put_32 (abfd, pid, data + 24);
3859 memcpy (data + 72, gregs, 144);
3860 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3861 &data, sizeof (data));
3862 }
3863 }
3864 /* NOTREACHED */
3865}
3866\f
4c45e5c9
JJ		 3867/* Return address for Ith PLT stub in section PLT, for relocation REL
3868 or (bfd_vma) -1 if it should not be included. */
3869
3870static bfd_vma
3871elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3872 const arelent *rel ATTRIBUTE_UNUSED)
3873{
3874 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3875}
3876
643f7afb
AK		 3877/* Merge backend specific data from an object file to the output
3878 object file when linking. */
3879
55786da2 3880static bfd_boolean
50e03d47 3881elf32_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
55786da2 3882{
50e03d47
AM		 3883 bfd *obfd = info->output_bfd;
3884
643f7afb
AK		 3885 if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
3886 return TRUE;
3887
50e03d47 3888 if (!elf_s390_merge_obj_attributes (ibfd, info))
643f7afb
AK		 3889 return FALSE;
3890
55786da2
AK		 3891 elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
3892 return TRUE;
3893}
3894
4c45e5c9 3895
6d00b590 3896#define TARGET_BIG_SYM s390_elf32_vec
a85d7ed0
NC		 3897#define TARGET_BIG_NAME "elf32-s390"
3898#define ELF_ARCH bfd_arch_s390
ae95ffa6 3899#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 3900#define ELF_MACHINE_CODE EM_S390
3901#define ELF_MACHINE_ALT1 EM_S390_OLD
3902#define ELF_MAXPAGESIZE 0x1000
3903
3904#define elf_backend_can_gc_sections 1
51b64d56 3905#define elf_backend_can_refcount 1
a85d7ed0
NC		 3906#define elf_backend_want_got_plt 1
3907#define elf_backend_plt_readonly 1
3908#define elf_backend_want_plt_sym 0
3909#define elf_backend_got_header_size 12
5474d94f 3910#define elf_backend_want_dynrelro 1
b491616a 3911#define elf_backend_rela_normal 1
a85d7ed0 3912
26e41594 3913#define elf_info_to_howto elf_s390_info_to_howto
a85d7ed0 3914
a85d7ed0
NC		 3915#define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
3916#define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
3917#define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
157090f7 3918#define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
a85d7ed0 3919
55786da2
AK		 3920#define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
3921
a85d7ed0 3922#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
26e41594 3923#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c 3924#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
9d19e4fd 3925#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
a85d7ed0
NC		 3926#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3927#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
26e41594 3928#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
0451c93c 3929#define elf_backend_reloc_type_class elf_s390_reloc_type_class
26e41594 3930#define elf_backend_relocate_section elf_s390_relocate_section
a85d7ed0 3931#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 3932#define elf_backend_init_index_section _bfd_elf_init_1_index_section
979f4a38 3933#define elf_backend_grok_prstatus elf_s390_grok_prstatus
e3e9290d
AA		 3934#define elf_backend_grok_psinfo elf_s390_grok_psinfo
3935#define elf_backend_write_core_note elf_s390_write_core_note
4c45e5c9 3936#define elf_backend_plt_sym_val elf_s390_plt_sym_val
07d6d2b8 3937#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
a85d7ed0 3938
69fc87f1 3939#define bfd_elf32_mkobject elf_s390_mkobject
26e41594 3940#define elf_backend_object_p elf_s390_object_p
a85d7ed0 3941
a2f63b2e
MR		 3942#define elf_backend_linux_prpsinfo32_ugid16 TRUE
3943
a85d7ed0 3944#include "elf32-target.h"
GDB Binutils - Deliverables
This page took 1.29368 seconds and 4 git commands to generate.