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MIPS/BFD: Also handle `jalr $0, $25' with R_MIPS_JALR
[deliverable/binutils-gdb.git] / bfd / elf32-s390.c
CommitLineData
a85d7ed0 1/* IBM S/390-specific support for 32-bit ELF
2571583a 2 Copyright (C) 2000-2017 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
5236c819
MS		 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),
63 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
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,
5236c819
MS		 66 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
67 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
68 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
69 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
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,
74 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
75 HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
76 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
77 HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
78 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
79 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
80 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
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,
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,
92 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
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),
95 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
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,
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,
104 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
105 EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
106 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
107 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
108 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
109 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
110 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
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),
115 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
116 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
117 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
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),
bd1ea41b
MS		 154 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
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),
158 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
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),
fb798c50
AK		 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),
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),
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),
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
326static void
2c3fc389
NC		 327elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
328 arelent *cache_ptr,
329 Elf_Internal_Rela *dst)
a85d7ed0 330{
d0fb9a8d
JJ		 331 unsigned int r_type = ELF32_R_TYPE(dst->r_info);
332 switch (r_type)
a85d7ed0
NC		 333 {
334 case R_390_GNU_VTINHERIT:
335 cache_ptr->howto = &elf32_s390_vtinherit_howto;
336 break;
337
338 case R_390_GNU_VTENTRY:
339 cache_ptr->howto = &elf32_s390_vtentry_howto;
340 break;
341
342 default:
d0fb9a8d
JJ		 343 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
344 {
695344c0 345 /* xgettext:c-format */
4eca0228
AM		 346 _bfd_error_handler (_("%B: invalid relocation type %d"),
347 abfd, (int) r_type);
d0fb9a8d
JJ		 348 r_type = R_390_NONE;
349 }
350 cache_ptr->howto = &elf_howto_table[r_type];
dc810e39 351 }
a85d7ed0
NC		 352}
353
69fc87f1
MS		 354/* A relocation function which doesn't do anything. */
355static bfd_reloc_status_type
2c3fc389
NC		 356s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
357 arelent *reloc_entry,
358 asymbol *symbol ATTRIBUTE_UNUSED,
359 void * data ATTRIBUTE_UNUSED,
360 asection *input_section,
361 bfd *output_bfd,
362 char **error_message ATTRIBUTE_UNUSED)
69fc87f1
MS		 363{
364 if (output_bfd)
365 reloc_entry->address += input_section->output_offset;
366 return bfd_reloc_ok;
367}
368
bd1ea41b
MS		 369/* Handle the large displacement relocs. */
370static bfd_reloc_status_type
2c3fc389
NC		 371s390_elf_ldisp_reloc (bfd *abfd ATTRIBUTE_UNUSED,
372 arelent *reloc_entry,
373 asymbol *symbol,
374 void * data ATTRIBUTE_UNUSED,
375 asection *input_section,
376 bfd *output_bfd,
377 char **error_message ATTRIBUTE_UNUSED)
bd1ea41b
MS		 378{
379 reloc_howto_type *howto = reloc_entry->howto;
380 bfd_vma relocation;
381 bfd_vma insn;
68ffbac6 382
bd1ea41b
MS		 383 if (output_bfd != (bfd *) NULL
384 && (symbol->flags & BSF_SECTION_SYM) == 0
385 && (! howto->partial_inplace
386 || reloc_entry->addend == 0))
387 {
388 reloc_entry->address += input_section->output_offset;
389 return bfd_reloc_ok;
390 }
68ffbac6 391
bd1ea41b
MS		 392 if (output_bfd != NULL)
393 return bfd_reloc_continue;
68ffbac6 394
07515404 395 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b 396 return bfd_reloc_outofrange;
68ffbac6 397
bd1ea41b
MS		 398 relocation = (symbol->value
399 + symbol->section->output_section->vma
400 + symbol->section->output_offset);
401 relocation += reloc_entry->addend;
402 if (howto->pc_relative)
403 {
404 relocation -= (input_section->output_section->vma
405 + input_section->output_offset);
406 relocation -= reloc_entry->address;
407 }
68ffbac6 408
bd1ea41b
MS		 409 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
410 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
411 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
68ffbac6 412
bd1ea41b
MS		 413 if ((bfd_signed_vma) relocation < - 0x80000
414 || (bfd_signed_vma) relocation > 0x7ffff)
415 return bfd_reloc_overflow;
416 else
417 return bfd_reloc_ok;
418}
419
b34976b6 420static bfd_boolean
2c3fc389 421elf_s390_is_local_label_name (bfd *abfd, const char *name)
a85d7ed0
NC		 422{
423 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 424 return TRUE;
a85d7ed0
NC		 425
426 return _bfd_elf_is_local_label_name (abfd, name);
427}
428
429/* Functions for the 390 ELF linker. */
430
431/* The name of the dynamic interpreter. This is put in the .interp
432 section. */
433
87049b0d 434#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
a85d7ed0 435
64285810
MS		 436/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
437 copying dynamic variables from a shared lib into an app's dynbss
438 section, and instead use a dynamic relocation to point into the
439 shared lib. */
440#define ELIMINATE_COPY_RELOCS 1
441
a85d7ed0
NC		 442/* The size in bytes of the first entry in the procedure linkage table. */
443#define PLT_FIRST_ENTRY_SIZE 32
444/* The size in bytes of an entry in the procedure linkage table. */
dc810e39 445#define PLT_ENTRY_SIZE 32
a85d7ed0
NC		 446
447#define GOT_ENTRY_SIZE 4
448
470b557a
AK		 449#define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela)
450
a85d7ed0
NC		 451/* The first three entries in a procedure linkage table are reserved,
452 and the initial contents are unimportant (we zero them out).
453 Subsequent entries look like this. See the SVR4 ABI 386
454 supplement to see how this works. */
455
456/* For the s390, simple addr offset can only be 0 - 4096.
457 To use the full 2 GB address space, several instructions
458 are needed to load an address in a register and execute
459 a branch( or just saving the address)
460
dc810e39 461 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC		 462
463/* The first 3 words in the GOT are then reserved.
464 Word 0 is the address of the dynamic table.
465 Word 1 is a pointer to a structure describing the object
466 Word 2 is used to point to the loader entry address.
467
4cc11e76 468 The code for position independent PLT entries looks like this:
a85d7ed0
NC		 469
470 r12 holds addr of the current GOT at entry to the PLT
471
472 The GOT holds the address in the PLT to be executed.
473 The loader then gets:
474 24(15) = Pointer to the structure describing the object.
a7e28bbe 475 28(15) = Offset into rela.plt
a85d7ed0
NC		 476
477 The loader must then find the module where the function is
478 and insert the address in the GOT.
479
480 Note: 390 can only address +- 64 K relative.
481 We check if offset > 65536, then make a relative branch -64xxx
482 back to a previous defined branch
483
484PLT1: BASR 1,0 # 2 bytes
485 L 1,22(1) # 4 bytes Load offset in GOT in r 1
486 L 1,(1,12) # 4 bytes Load address from GOT in r1
487 BCR 15,1 # 2 bytes Jump to address
488RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
489 L 1,14(1) # 4 bytes Load offset in symol table in r1
490 BRC 15,-x # 4 bytes Jump to start of PLT
491 .word 0 # 2 bytes filler
492 .long ? # 4 bytes offset in GOT
a7e28bbe 493 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 494
495 This was the general case. There are two additional, optimizes PLT
496 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
497 First the one for GOT offsets < 4096:
498
499PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
500 BCR 15,1 # 2 bytes Jump to address
501 .word 0,0,0 # 6 bytes filler
502RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
a7e28bbe 503 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
a85d7ed0
NC		 504 BRC 15,-x # 4 bytes Jump to start of PLT
505 .word 0,0,0 # 6 bytes filler
a7e28bbe 506 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 507
508 Second the one for GOT offsets < 32768:
509
510PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
511 L 1,(1,12) # 4 bytes Load address from GOT to r1
512 BCR 15,1 # 2 bytes Jump to address
513 .word 0 # 2 bytes filler
514RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
a7e28bbe 515 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
a85d7ed0
NC		 516 BRC 15,-x # 4 bytes Jump to start of PLT
517 .word 0,0,0 # 6 bytes filler
a7e28bbe 518 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 519
520Total = 32 bytes per PLT entry
521
522 The code for static build PLT entries looks like this:
523
524PLT1: BASR 1,0 # 2 bytes
525 L 1,22(1) # 4 bytes Load address of GOT entry
526 L 1,0(0,1) # 4 bytes Load address from GOT in r1
527 BCR 15,1 # 2 bytes Jump to address
528RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
529 L 1,14(1) # 4 bytes Load offset in symbol table in r1
530 BRC 15,-x # 4 bytes Jump to start of PLT
531 .word 0 # 2 bytes filler
532 .long ? # 4 bytes address of GOT entry
a7e28bbe 533 .long ? # 4 bytes offset into rela.plt */
a85d7ed0 534
9aa17453
AK		 535static const bfd_byte elf_s390_plt_entry[PLT_ENTRY_SIZE] =
536 {
537 0x0d, 0x10, /* basr %r1,%r0 */
538 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
539 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */
540 0x07, 0xf1, /* br %r1 */
541 0x0d, 0x10, /* basr %r1,%r0 */
542 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
543 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
544 0x00, 0x00, /* padding */
545 0x00, 0x00, 0x00, 0x00, /* GOT offset */
546 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
547 };
548
549/* Generic PLT pic entry. */
550static const bfd_byte elf_s390_plt_pic_entry[PLT_ENTRY_SIZE] =
551 {
552 0x0d, 0x10, /* basr %r1,%r0 */
553 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
554 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
555 0x07, 0xf1, /* br %r1 */
556 0x0d, 0x10, /* basr %r1,%r0 */
557 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
558 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
559 0x00, 0x00, /* padding */
560 0x00, 0x00, 0x00, 0x00, /* GOT offset */
561 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
562 };
563
564/* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced
565 when generating the PLT slot with the GOT offset. */
566static const bfd_byte elf_s390_plt_pic12_entry[PLT_ENTRY_SIZE] =
567 {
568 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */
569 0x07, 0xf1, /* br %r1 */
570 0x00, 0x00, 0x00, 0x00, /* padding */
571 0x00, 0x00,
572 0x0d, 0x10, /* basr %r1,%r0 */
573 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
574 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
575 0x00, 0x00, 0x00, 0x00,
576 0x00, 0x00, 0x00, 0x00
577 };
578
579/* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced
580 when generating the PLT slot with the GOT offset. */
581static const bfd_byte elf_s390_plt_pic16_entry[PLT_ENTRY_SIZE] =
582 {
583 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */
584 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
585 0x07, 0xf1, /* br %r1 */
586 0x00, 0x00,
587 0x0d, 0x10, /* basr %r1,%r0 */
588 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
589 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
590 0x00, 0x00, 0x00, 0x00,
591 0x00, 0x00, 0x00, 0x00,
592 0x00, 0x00
593 };
a85d7ed0 594
a7e28bbe 595/* The first PLT entry pushes the offset into the rela.plt
a85d7ed0
NC		 596 from R1 onto the stack at 8(15) and the loader object info
597 at 12(15), loads the loader address in R1 and jumps to it. */
598
599/* The first entry in the PLT for PIC code:
600
601PLT0:
a7e28bbe 602 ST 1,28(15) # R1 has offset into rela.plt
a85d7ed0 603 L 1,4(12) # Get loader ino(object struct address)
dc810e39 604 ST 1,24(15) # Store address
a85d7ed0
NC		 605 L 1,8(12) # Entry address of loader in R1
606 BR 1 # Jump to loader
607
608 The first entry in the PLT for static code:
609
610PLT0:
a7e28bbe 611 ST 1,28(15) # R1 has offset into rela.plt
a85d7ed0
NC		 612 BASR 1,0
613 L 1,18(0,1) # Get address of GOT
614 MVC 24(4,15),4(1) # Move loader ino to stack
615 L 1,8(1) # Get address of loader
616 BR 1 # Jump to loader
617 .word 0 # filler
618 .long got # address of GOT */
619
9aa17453
AK		 620static const bfd_byte elf_s390_plt_first_entry[PLT_FIRST_ENTRY_SIZE] =
621 {
622 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
623 0x0d, 0x10, /* basr %r1,%r0 */
624 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */
625 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */
626 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */
627 0x07, 0xf1, /* br %r1 */
628 0x00, 0x00, 0x00, 0x00,
629 0x00, 0x00, 0x00, 0x00,
630 0x00, 0x00
631 };
632
633static const bfd_byte elf_s390_plt_pic_first_entry[PLT_FIRST_ENTRY_SIZE] =
634 {
635 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
636 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */
637 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */
638 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */
639 0x07, 0xf1, /* br %r1 */
640 0x00, 0x00, 0x00, 0x00,
641 0x00, 0x00, 0x00, 0x00,
642 0x00, 0x00, 0x00, 0x00,
643 0x00, 0x00
644 };
a85d7ed0 645
a85d7ed0
NC		 646
647/* s390 ELF linker hash entry. */
648
649struct elf_s390_link_hash_entry
650{
0451c93c 651 struct elf_link_hash_entry elf;
a85d7ed0 652
0451c93c 653 /* Track dynamic relocs copied for this symbol. */
00d8c7a9 654 struct elf_dyn_relocs *dyn_relocs;
5236c819
MS		 655
656 /* Number of GOTPLT references for a function. */
657 bfd_signed_vma gotplt_refcount;
69fc87f1
MS		 658
659#define GOT_UNKNOWN 0
660#define GOT_NORMAL 1
661#define GOT_TLS_GD 2
662#define GOT_TLS_IE 3
663#define GOT_TLS_IE_NLT 4
664 unsigned char tls_type;
470b557a
AK		 665
666 /* For pointer equality reasons we might need to change the symbol
667 type from STT_GNU_IFUNC to STT_FUNC together with its value and
668 section entry. So after alloc_dynrelocs only these values should
669 be used. In order to check whether a symbol is IFUNC use
670 s390_is_ifunc_symbol_p. */
671 bfd_vma ifunc_resolver_address;
672 asection *ifunc_resolver_section;
a85d7ed0
NC		 673};
674
69fc87f1
MS		 675#define elf_s390_hash_entry(ent) \
676 ((struct elf_s390_link_hash_entry *)(ent))
677
470b557a
AK		 678/* This structure represents an entry in the local PLT list needed for
679 local IFUNC symbols. */
680struct plt_entry
681{
682 /* The section of the local symbol.
683 Set in relocate_section and used in finish_dynamic_sections. */
684 asection *sec;
685
686 union
687 {
688 bfd_signed_vma refcount;
689 bfd_vma offset;
690 } plt;
691};
692
0ffa91dd
NC		 693/* NOTE: Keep this structure in sync with
694 the one declared in elf64-s390.c. */
69fc87f1
MS		 695struct elf_s390_obj_tdata
696{
697 struct elf_obj_tdata root;
698
470b557a
AK		 699 /* A local PLT is needed for ifunc symbols. */
700 struct plt_entry *local_plt;
701
0ffa91dd 702 /* TLS type for each local got entry. */
69fc87f1
MS		 703 char *local_got_tls_type;
704};
705
706#define elf_s390_tdata(abfd) \
707 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
708
470b557a
AK		 709#define elf_s390_local_plt(abfd) \
710 (elf_s390_tdata (abfd)->local_plt)
711
69fc87f1
MS		 712#define elf_s390_local_got_tls_type(abfd) \
713 (elf_s390_tdata (abfd)->local_got_tls_type)
714
0ffa91dd
NC		 715#define is_s390_elf(bfd) \
716 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
717 && elf_tdata (bfd) != NULL \
4dfe6ac6 718 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 719
69fc87f1 720static bfd_boolean
62d7a5f6 721elf_s390_mkobject (bfd *abfd)
69fc87f1 722{
0ffa91dd 723 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 724 S390_ELF_DATA);
69fc87f1
MS		 725}
726
727static bfd_boolean
2c3fc389 728elf_s390_object_p (bfd *abfd)
69fc87f1 729{
69fc87f1
MS		 730 /* Set the right machine number for an s390 elf32 file. */
731 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
732}
733
a85d7ed0
NC		 734/* s390 ELF linker hash table. */
735
736struct elf_s390_link_hash_table
737{
0451c93c 738 struct elf_link_hash_table elf;
a85d7ed0 739
0451c93c 740 /* Short-cuts to get to dynamic linker sections. */
470b557a 741 asection *irelifunc;
ec338859 742
2c3fc389
NC		 743 union
744 {
69fc87f1
MS		 745 bfd_signed_vma refcount;
746 bfd_vma offset;
747 } tls_ldm_got;
748
87d72d41
AM		 749 /* Small local sym cache. */
750 struct sym_cache sym_cache;
0451c93c 751};
a85d7ed0
NC		 752
753/* Get the s390 ELF linker hash table from a link_info structure. */
754
755#define elf_s390_hash_table(p) \
4dfe6ac6
NC		 756 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
757 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
a85d7ed0 758
470b557a
AK		 759#undef ELF64
760#include "elf-s390-common.c"
761
a85d7ed0
NC		 762/* Create an entry in an s390 ELF linker hash table. */
763
764static struct bfd_hash_entry *
2c3fc389
NC		 765link_hash_newfunc (struct bfd_hash_entry *entry,
766 struct bfd_hash_table *table,
767 const char *string)
a85d7ed0 768{
a85d7ed0
NC		 769 /* Allocate the structure if it has not already been allocated by a
770 subclass. */
0451c93c
MS		 771 if (entry == NULL)
772 {
773 entry = bfd_hash_allocate (table,
774 sizeof (struct elf_s390_link_hash_entry));
775 if (entry == NULL)
776 return entry;
777 }
ec338859 778
a85d7ed0 779 /* Call the allocation method of the superclass. */
0451c93c
MS		 780 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
781 if (entry != NULL)
a85d7ed0 782 {
0451c93c 783 struct elf_s390_link_hash_entry *eh;
ec338859 784
0451c93c
MS		 785 eh = (struct elf_s390_link_hash_entry *) entry;
786 eh->dyn_relocs = NULL;
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;
dc810e39 802 bfd_size_type 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
831 if (eind->dyn_relocs != NULL)
832 {
833 if (edir->dyn_relocs != NULL)
834 {
00d8c7a9
AK		 835 struct elf_dyn_relocs **pp;
836 struct elf_dyn_relocs *p;
0451c93c 837
fcfa13d2 838 /* Add reloc counts against the indirect sym to the direct sym
0451c93c
MS		 839 list. Merge any entries against the same section. */
840 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
841 {
00d8c7a9 842 struct elf_dyn_relocs *q;
0451c93c
MS		 843
844 for (q = edir->dyn_relocs; q != NULL; q = q->next)
845 if (q->sec == p->sec)
846 {
847 q->pc_count += p->pc_count;
848 q->count += p->count;
849 *pp = p->next;
850 break;
851 }
852 if (q == NULL)
853 pp = &p->next;
854 }
855 *pp = edir->dyn_relocs;
856 }
857
858 edir->dyn_relocs = eind->dyn_relocs;
859 eind->dyn_relocs = NULL;
860 }
861
69fc87f1
MS		 862 if (ind->root.type == bfd_link_hash_indirect
863 && dir->got.refcount <= 0)
864 {
865 edir->tls_type = eind->tls_type;
866 eind->tls_type = GOT_UNKNOWN;
867 }
868
64285810
MS		 869 if (ELIMINATE_COPY_RELOCS
870 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 871 && dir->dynamic_adjusted)
872 {
873 /* If called to transfer flags for a weakdef during processing
874 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
875 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
e81830c5
AM		 876 if (dir->versioned != versioned_hidden)
877 dir->ref_dynamic |= ind->ref_dynamic;
f5385ebf
AM		 878 dir->ref_regular |= ind->ref_regular;
879 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
880 dir->needs_plt |= ind->needs_plt;
881 }
64285810 882 else
fcfa13d2 883 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 884}
a85d7ed0 885
69fc87f1 886static int
2c3fc389
NC		 887elf_s390_tls_transition (struct bfd_link_info *info,
888 int r_type,
889 int is_local)
69fc87f1 890{
0e1862bb 891 if (bfd_link_pic (info))
69fc87f1
MS		 892 return r_type;
893
894 switch (r_type)
895 {
896 case R_390_TLS_GD32:
897 case R_390_TLS_IE32:
898 if (is_local)
899 return R_390_TLS_LE32;
900 return R_390_TLS_IE32;
901 case R_390_TLS_GOTIE32:
902 if (is_local)
903 return R_390_TLS_LE32;
904 return R_390_TLS_GOTIE32;
905 case R_390_TLS_LDM32:
906 return R_390_TLS_LE32;
907 }
908
909 return r_type;
910}
911
a85d7ed0
NC		 912/* Look through the relocs for a section during the first phase, and
913 allocate space in the global offset table or procedure linkage
914 table. */
915
b34976b6 916static bfd_boolean
2c3fc389
NC		 917elf_s390_check_relocs (bfd *abfd,
918 struct bfd_link_info *info,
919 asection *sec,
920 const Elf_Internal_Rela *relocs)
a85d7ed0 921{
0451c93c 922 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 923 Elf_Internal_Shdr *symtab_hdr;
924 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 925 const Elf_Internal_Rela *rel;
926 const Elf_Internal_Rela *rel_end;
a85d7ed0 927 asection *sreloc;
5236c819 928 bfd_signed_vma *local_got_refcounts;
69fc87f1 929 int tls_type, old_tls_type;
470b557a 930 Elf_Internal_Sym *isym;
a85d7ed0 931
0e1862bb 932 if (bfd_link_relocatable (info))
b34976b6 933 return TRUE;
a85d7ed0 934
0ffa91dd
NC		 935 BFD_ASSERT (is_s390_elf (abfd));
936
0451c93c 937 htab = elf_s390_hash_table (info);
0ffa91dd 938 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 939 sym_hashes = elf_sym_hashes (abfd);
5236c819 940 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 941
a85d7ed0
NC		 942 sreloc = NULL;
943
944 rel_end = relocs + sec->reloc_count;
945 for (rel = relocs; rel < rel_end; rel++)
946 {
69fc87f1 947 unsigned int r_type;
a85d7ed0
NC		 948 unsigned long r_symndx;
949 struct elf_link_hash_entry *h;
950
951 r_symndx = ELF32_R_SYM (rel->r_info);
952
0451c93c
MS		 953 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
954 {
695344c0 955 /* xgettext:c-format */
4eca0228
AM		 956 _bfd_error_handler (_("%B: bad symbol index: %d"),
957 abfd, r_symndx);
b34976b6 958 return FALSE;
0451c93c
MS		 959 }
960
a85d7ed0 961 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK		 962 {
963 /* A local symbol. */
964 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
965 abfd, r_symndx);
966 if (isym == NULL)
967 return FALSE;
968
969 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
970 {
971 struct plt_entry *plt;
972
0cb79d69
AK		 973 if (htab->elf.dynobj == NULL)
974 htab->elf.dynobj = abfd;
975
470b557a
AK		 976 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
977 return FALSE;
978
979 if (local_got_refcounts == NULL)
980 {
981 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
982 return FALSE;
983 local_got_refcounts = elf_local_got_refcounts (abfd);
984 }
985 plt = elf_s390_local_plt (abfd);
986 plt[r_symndx].plt.refcount++;
987 }
988 h = NULL;
989 }
a85d7ed0 990 else
973a3492
L		 991 {
992 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
993 while (h->root.type == bfd_link_hash_indirect
994 || h->root.type == bfd_link_hash_warning)
995 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM		 996
997 /* PR15323, ref flags aren't set for references in the same
998 object. */
999 h->root.non_ir_ref = 1;
973a3492 1000 }
a85d7ed0 1001
5236c819
MS		 1002 /* Create got section and local_got_refcounts array if they
1003 are needed. */
69fc87f1
MS		 1004 r_type = elf_s390_tls_transition (info,
1005 ELF32_R_TYPE (rel->r_info),
1006 h == NULL);
1007 switch (r_type)
a85d7ed0
NC		 1008 {
1009 case R_390_GOT12:
5236c819 1010 case R_390_GOT16:
bd1ea41b 1011 case R_390_GOT20:
a85d7ed0 1012 case R_390_GOT32:
befc3abb 1013 case R_390_GOTENT:
5236c819
MS		 1014 case R_390_GOTPLT12:
1015 case R_390_GOTPLT16:
bd1ea41b 1016 case R_390_GOTPLT20:
5236c819
MS		 1017 case R_390_GOTPLT32:
1018 case R_390_GOTPLTENT:
69fc87f1
MS		 1019 case R_390_TLS_GD32:
1020 case R_390_TLS_GOTIE12:
bd1ea41b 1021 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1022 case R_390_TLS_GOTIE32:
1023 case R_390_TLS_IEENT:
1024 case R_390_TLS_IE32:
1025 case R_390_TLS_LDM32:
5236c819
MS		 1026 if (h == NULL
1027 && local_got_refcounts == NULL)
a85d7ed0 1028 {
470b557a 1029 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 1030 return FALSE;
470b557a 1031 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 1032 }
5236c819
MS		 1033 /* Fall through. */
1034 case R_390_GOTOFF16:
1035 case R_390_GOTOFF32:
0451c93c 1036 case R_390_GOTPC:
befc3abb 1037 case R_390_GOTPCDBL:
f41345a7 1038 if (htab->elf.sgot == NULL)
0451c93c
MS		 1039 {
1040 if (htab->elf.dynobj == NULL)
1041 htab->elf.dynobj = abfd;
ce558b89 1042 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
b34976b6 1043 return FALSE;
0451c93c 1044 }
5236c819
MS		 1045 }
1046
470b557a
AK		 1047 if (h != NULL)
1048 {
1049 if (htab->elf.dynobj == NULL)
1050 htab->elf.dynobj = abfd;
1051 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1052 return FALSE;
1053
1054 /* Make sure an IFUNC symbol defined in a non-shared object
1055 always gets a PLT slot. */
1056 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1057 {
1058 /* The symbol is called by the dynamic loader in order
1059 to resolve the relocation. So it is in fact also
1060 referenced. */
1061 h->ref_regular = 1;
1062 h->needs_plt = 1;
1063 }
1064 }
69fc87f1 1065 switch (r_type)
5236c819 1066 {
5236c819
MS		 1067 case R_390_GOTPC:
1068 case R_390_GOTPCDBL:
470b557a
AK		 1069 /* These relocs do not need a GOT slot. They just load the
1070 GOT pointer itself or address something else relative to
1071 the GOT. Since the GOT pointer has been set up above we
1072 are done. */
a85d7ed0 1073 break;
01a53584
AK		 1074 case R_390_GOTOFF16:
1075 case R_390_GOTOFF32:
1076 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
1077 break;
1a0670f3 1078 /* Fall through. */
a85d7ed0 1079
fb798c50 1080 case R_390_PLT12DBL:
26e41594 1081 case R_390_PLT16DBL:
fb798c50 1082 case R_390_PLT24DBL:
26e41594 1083 case R_390_PLT32DBL:
a85d7ed0 1084 case R_390_PLT32:
5236c819
MS		 1085 case R_390_PLTOFF16:
1086 case R_390_PLTOFF32:
a85d7ed0 1087 /* This symbol requires a procedure linkage table entry. We
26e41594
AM		 1088 actually build the entry in adjust_dynamic_symbol,
1089 because this might be a case of linking PIC code which is
1090 never referenced by a dynamic object, in which case we
1091 don't need to generate a procedure linkage table entry
1092 after all. */
a85d7ed0
NC		 1093
1094 /* If this is a local symbol, we resolve it directly without
26e41594 1095 creating a procedure linkage table entry. */
5236c819
MS		 1096 if (h != NULL)
1097 {
f5385ebf 1098 h->needs_plt = 1;
5236c819
MS		 1099 h->plt.refcount += 1;
1100 }
1101 break;
a85d7ed0 1102
5236c819
MS		 1103 case R_390_GOTPLT12:
1104 case R_390_GOTPLT16:
bd1ea41b 1105 case R_390_GOTPLT20:
5236c819
MS		 1106 case R_390_GOTPLT32:
1107 case R_390_GOTPLTENT:
1108 /* This symbol requires either a procedure linkage table entry
1109 or an entry in the local got. We actually build the entry
1110 in adjust_dynamic_symbol because whether this is really a
1111 global reference can change and with it the fact if we have
1112 to create a plt entry or a local got entry. To be able to
1113 make a once global symbol a local one we have to keep track
1114 of the number of gotplt references that exist for this
1115 symbol. */
1116 if (h != NULL)
1117 {
1118 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1119 h->needs_plt = 1;
5236c819
MS		 1120 h->plt.refcount += 1;
1121 }
1122 else
1123 local_got_refcounts[r_symndx] += 1;
a85d7ed0
NC		 1124 break;
1125
69fc87f1
MS		 1126 case R_390_TLS_LDM32:
1127 htab->tls_ldm_got.refcount += 1;
1128 break;
1129
1130 case R_390_TLS_IE32:
1131 case R_390_TLS_GOTIE12:
bd1ea41b 1132 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1133 case R_390_TLS_GOTIE32:
1134 case R_390_TLS_IEENT:
0e1862bb 1135 if (bfd_link_pic (info))
69fc87f1 1136 info->flags |= DF_STATIC_TLS;
ae9a127f 1137 /* Fall through. */
69fc87f1
MS		 1138
1139 case R_390_GOT12:
26e41594 1140 case R_390_GOT16:
bd1ea41b 1141 case R_390_GOT20:
69fc87f1
MS		 1142 case R_390_GOT32:
1143 case R_390_GOTENT:
1144 case R_390_TLS_GD32:
1145 /* This symbol requires a global offset table entry. */
1146 switch (r_type)
1147 {
1148 default:
1149 case R_390_GOT12:
1150 case R_390_GOT16:
bd1ea41b 1151 case R_390_GOT20:
69fc87f1
MS		 1152 case R_390_GOT32:
1153 case R_390_GOTENT:
1154 tls_type = GOT_NORMAL;
1155 break;
1156 case R_390_TLS_GD32:
1157 tls_type = GOT_TLS_GD;
1158 break;
1159 case R_390_TLS_IE32:
1160 case R_390_TLS_GOTIE32:
1161 tls_type = GOT_TLS_IE;
1162 break;
1163 case R_390_TLS_GOTIE12:
bd1ea41b 1164 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1165 case R_390_TLS_IEENT:
1166 tls_type = GOT_TLS_IE_NLT;
1167 break;
1168 }
1169
1170 if (h != NULL)
1171 {
1172 h->got.refcount += 1;
1173 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1174 }
1175 else
1176 {
1177 local_got_refcounts[r_symndx] += 1;
1178 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1179 }
1180 /* If a TLS symbol is accessed using IE at least once,
1181 there is no point to use dynamic model for it. */
1182 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1183 {
1184 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1185 {
4eca0228 1186 _bfd_error_handler
695344c0 1187 /* xgettext:c-format */
d003868e
AM		 1188 (_("%B: `%s' accessed both as normal and thread local symbol"),
1189 abfd, h->root.root.string);
69fc87f1
MS		 1190 return FALSE;
1191 }
1192 if (old_tls_type > tls_type)
1193 tls_type = old_tls_type;
1194 }
1195
1196 if (old_tls_type != tls_type)
1197 {
1198 if (h != NULL)
1199 elf_s390_hash_entry (h)->tls_type = tls_type;
1200 else
1201 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1202 }
1203
1204 if (r_type != R_390_TLS_IE32)
1205 break;
ae9a127f 1206 /* Fall through. */
69fc87f1
MS		 1207
1208 case R_390_TLS_LE32:
e00d879a
AK		 1209 /* For static linking and executables this reloc will be
1210 calculated at linktime otherwise a TLS_TPOFF runtime
1211 reloc will be generated. */
0e1862bb 1212 if (r_type == R_390_TLS_LE32 && bfd_link_pie (info))
e00d879a
AK		 1213 break;
1214
0e1862bb 1215 if (!bfd_link_pic (info))
69fc87f1
MS		 1216 break;
1217 info->flags |= DF_STATIC_TLS;
ae9a127f 1218 /* Fall through. */
69fc87f1 1219
26e41594
AM		 1220 case R_390_8:
1221 case R_390_16:
a85d7ed0 1222 case R_390_32:
26e41594 1223 case R_390_PC16:
fb798c50 1224 case R_390_PC12DBL:
26e41594 1225 case R_390_PC16DBL:
fb798c50 1226 case R_390_PC24DBL:
befc3abb 1227 case R_390_PC32DBL:
a85d7ed0 1228 case R_390_PC32:
99ba5125 1229 if (h != NULL && bfd_link_executable (info))
0451c93c
MS		 1230 {
1231 /* If this reloc is in a read-only section, we might
1232 need a copy reloc. We can't check reliably at this
1233 stage whether the section is read-only, as input
1234 sections have not yet been mapped to output sections.
1235 Tentatively set the flag for now, and correct in
1236 adjust_dynamic_symbol. */
f5385ebf 1237 h->non_got_ref = 1;
ec338859 1238
0e1862bb 1239 if (!bfd_link_pic (info))
470b557a
AK		 1240 {
1241 /* We may need a .plt entry if the function this reloc
1242 refers to is in a shared lib. */
1243 h->plt.refcount += 1;
1244 }
0451c93c 1245 }
a85d7ed0
NC		 1246
1247 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1248 against a global symbol, or a non PC relative reloc
1249 against a local symbol, then we need to copy the reloc
1250 into the shared library. However, if we are linking with
1251 -Bsymbolic, we do not need to copy a reloc against a
1252 global symbol which is defined in an object we are
1253 including in the link (i.e., DEF_REGULAR is set). At
1254 this point we have not seen all the input files, so it is
1255 possible that DEF_REGULAR is not set now but will be set
1256 later (it is never cleared). In case of a weak definition,
1257 DEF_REGULAR may be cleared later by a strong definition in
1258 a shared library. We account for that possibility below by
1259 storing information in the relocs_copied field of the hash
1260 table entry. A similar situation occurs when creating
1261 shared libraries and symbol visibility changes render the
1262 symbol local.
1263
1264 If on the other hand, we are creating an executable, we
1265 may need to keep relocations for symbols satisfied by a
1266 dynamic library if we manage to avoid copy relocs for the
1267 symbol. */
0e1862bb 1268 if ((bfd_link_pic (info)
0451c93c 1269 && (sec->flags & SEC_ALLOC) != 0
ec338859 1270 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1271 && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1272 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1273 && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL
befc3abb 1274 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
0451c93c
MS		 1275 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1276 || (h != NULL
8c21ca21 1277 && (! SYMBOLIC_BIND (info, h)
0451c93c 1278 || h->root.type == bfd_link_hash_defweak
f5385ebf 1279 || !h->def_regular))))
64285810 1280 || (ELIMINATE_COPY_RELOCS
0e1862bb 1281 && !bfd_link_pic (info)
0451c93c
MS		 1282 && (sec->flags & SEC_ALLOC) != 0
1283 && h != NULL
1284 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1285 || !h->def_regular)))
a85d7ed0 1286 {
00d8c7a9
AK		 1287 struct elf_dyn_relocs *p;
1288 struct elf_dyn_relocs **head;
ec338859 1289
0451c93c
MS		 1290 /* We must copy these reloc types into the output file.
1291 Create a reloc section in dynobj and make room for
1292 this reloc. */
a85d7ed0
NC		 1293 if (sreloc == NULL)
1294 {
0451c93c
MS		 1295 if (htab->elf.dynobj == NULL)
1296 htab->elf.dynobj = abfd;
a85d7ed0 1297
83bac4b0
NC		 1298 sreloc = _bfd_elf_make_dynamic_reloc_section
1299 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1300
a85d7ed0 1301 if (sreloc == NULL)
83bac4b0 1302 return FALSE;
a85d7ed0
NC		 1303 }
1304
0451c93c
MS		 1305 /* If this is a global symbol, we count the number of
1306 relocations we need for this symbol. */
1307 if (h != NULL)
a85d7ed0 1308 {
ec338859 1309 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS		 1310 }
1311 else
1312 {
ec338859
AM		 1313 /* Track dynamic relocs needed for local syms too.
1314 We really need local syms available to do this
1315 easily. Oh well. */
ec338859 1316 asection *s;
6edfbbad 1317 void *vpp;
ae9a127f 1318
87d72d41
AM		 1319 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1320 abfd, r_symndx);
1321 if (isym == NULL)
b34976b6 1322 return FALSE;
ec338859 1323
87d72d41
AM		 1324 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1325 if (s == NULL)
1326 s = sec;
1327
6edfbbad 1328 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1329 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1330 }
1331
1332 p = *head;
1333 if (p == NULL || p->sec != sec)
1334 {
1335 bfd_size_type amt = sizeof *p;
ae9a127f 1336
00d8c7a9 1337 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1338 bfd_alloc (htab->elf.dynobj, amt));
1339 if (p == NULL)
b34976b6 1340 return FALSE;
ec338859
AM		 1341 p->next = *head;
1342 *head = p;
1343 p->sec = sec;
1344 p->count = 0;
1345 p->pc_count = 0;
a85d7ed0 1346 }
ec338859
AM		 1347
1348 p->count += 1;
1349 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
fb798c50 1350 || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL
ec338859 1351 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
fb798c50 1352 || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL
befc3abb 1353 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
ec338859
AM		 1354 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1355 p->pc_count += 1;
a85d7ed0 1356 }
a85d7ed0 1357 break;
ec338859 1358
a85d7ed0
NC		 1359 /* This relocation describes the C++ object vtable hierarchy.
1360 Reconstruct it for later use during GC. */
26e41594 1361 case R_390_GNU_VTINHERIT:
c152c796 1362 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
26e41594
AM		 1363 return FALSE;
1364 break;
ec338859 1365
a85d7ed0
NC		 1366 /* This relocation describes which C++ vtable entries are actually
1367 used. Record for later use during GC. */
26e41594 1368 case R_390_GNU_VTENTRY:
d17e0c6e
JB		 1369 BFD_ASSERT (h != NULL);
1370 if (h != NULL
1371 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
26e41594
AM		 1372 return FALSE;
1373 break;
ec338859 1374
a85d7ed0
NC		 1375 default:
1376 break;
1377 }
1378 }
1379
b34976b6 1380 return TRUE;
a85d7ed0
NC		 1381}
1382
1383/* Return the section that should be marked against GC for a given
1384 relocation. */
1385
1386static asection *
07adf181
AM		 1387elf_s390_gc_mark_hook (asection *sec,
1388 struct bfd_link_info *info,
1389 Elf_Internal_Rela *rel,
1390 struct elf_link_hash_entry *h,
1391 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1392{
1393 if (h != NULL)
07adf181
AM		 1394 switch (ELF32_R_TYPE (rel->r_info))
1395 {
1396 case R_390_GNU_VTINHERIT:
1397 case R_390_GNU_VTENTRY:
1398 return NULL;
1399 }
1400 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0 1401
a85d7ed0
NC		 1402}
1403
1404/* Update the got entry reference counts for the section being removed. */
1405
b34976b6 1406static bfd_boolean
07adf181
AM		 1407elf_s390_gc_sweep_hook (bfd *abfd,
1408 struct bfd_link_info *info,
1409 asection *sec,
1410 const Elf_Internal_Rela *relocs)
a85d7ed0 1411{
470b557a 1412 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1413 Elf_Internal_Shdr *symtab_hdr;
1414 struct elf_link_hash_entry **sym_hashes;
1415 bfd_signed_vma *local_got_refcounts;
1416 const Elf_Internal_Rela *rel, *relend;
a85d7ed0 1417
0e1862bb 1418 if (bfd_link_relocatable (info))
7dda2462
TG		 1419 return TRUE;
1420
470b557a
AK		 1421 htab = elf_s390_hash_table (info);
1422 if (htab == NULL)
1423 return FALSE;
1424
ec338859 1425 elf_section_data (sec)->local_dynrel = NULL;
a85d7ed0 1426
0ffa91dd 1427 symtab_hdr = &elf_symtab_hdr (abfd);
0451c93c
MS		 1428 sym_hashes = elf_sym_hashes (abfd);
1429 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0
NC		 1430
1431 relend = relocs + sec->reloc_count;
1432 for (rel = relocs; rel < relend; rel++)
5236c819 1433 {
26e41594
AM		 1434 unsigned long r_symndx;
1435 unsigned int r_type;
1436 struct elf_link_hash_entry *h = NULL;
1437
5236c819 1438 r_symndx = ELF32_R_SYM (rel->r_info);
26e41594
AM		 1439 if (r_symndx >= symtab_hdr->sh_info)
1440 {
1441 struct elf_s390_link_hash_entry *eh;
00d8c7a9
AK		 1442 struct elf_dyn_relocs **pp;
1443 struct elf_dyn_relocs *p;
0451c93c 1444
26e41594 1445 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1446 while (h->root.type == bfd_link_hash_indirect
1447 || h->root.type == bfd_link_hash_warning)
1448 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1449 eh = (struct elf_s390_link_hash_entry *) h;
5236c819 1450
26e41594
AM		 1451 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1452 if (p->sec == sec)
1453 {
1454 /* Everything must go for SEC. */
1455 *pp = p->next;
1456 break;
1457 }
1458 }
470b557a
AK		 1459 else
1460 {
1461 Elf_Internal_Sym *isym;
1462
1463 /* A local symbol. */
1464 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1465 abfd, r_symndx);
1466 if (isym == NULL)
1467 return FALSE;
1468
1469 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1470 {
1471 struct plt_entry *plt = elf_s390_local_plt (abfd);
1472 if (plt[r_symndx].plt.refcount > 0)
1473 plt[r_symndx].plt.refcount--;
1474 }
1475 }
26e41594
AM		 1476
1477 r_type = ELF32_R_TYPE (rel->r_info);
1478 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
69fc87f1 1479 switch (r_type)
5236c819 1480 {
69fc87f1
MS		 1481 case R_390_TLS_LDM32:
1482 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1483 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1484 break;
1485
ef05be83
AK		 1486 case R_390_GOTOFF16:
1487 case R_390_GOTOFF32:
d47b13e0 1488 if (h != NULL && s390_is_ifunc_symbol_p (h) && h->def_regular)
01a53584
AK		 1489 {
1490 h->plt.refcount--;
1491 break;
1492 }
1493
ef05be83
AK		 1494 case R_390_GOTPC:
1495 case R_390_GOTPCDBL:
1496 break;
1497
69fc87f1
MS		 1498 case R_390_TLS_GD32:
1499 case R_390_TLS_IE32:
1500 case R_390_TLS_GOTIE12:
bd1ea41b 1501 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1502 case R_390_TLS_GOTIE32:
1503 case R_390_TLS_IEENT:
5236c819
MS		 1504 case R_390_GOT12:
1505 case R_390_GOT16:
bd1ea41b 1506 case R_390_GOT20:
5236c819 1507 case R_390_GOT32:
5236c819
MS		 1508 case R_390_GOTENT:
1509 if (h != NULL)
1510 {
1511 if (h->got.refcount > 0)
1512 h->got.refcount -= 1;
1513 }
1514 else if (local_got_refcounts != NULL)
1515 {
1516 if (local_got_refcounts[r_symndx] > 0)
1517 local_got_refcounts[r_symndx] -= 1;
1518 }
26e41594 1519 break;
a85d7ed0 1520
5236c819
MS		 1521 case R_390_8:
1522 case R_390_12:
1523 case R_390_16:
bd1ea41b 1524 case R_390_20:
5236c819
MS		 1525 case R_390_32:
1526 case R_390_PC16:
fb798c50 1527 case R_390_PC12DBL:
5236c819 1528 case R_390_PC16DBL:
fb798c50 1529 case R_390_PC24DBL:
5236c819
MS		 1530 case R_390_PC32DBL:
1531 case R_390_PC32:
0e1862bb 1532 if (bfd_link_pic (info))
26e41594
AM		 1533 break;
1534 /* Fall through. */
1535
fb798c50 1536 case R_390_PLT12DBL:
69fc87f1 1537 case R_390_PLT16DBL:
fb798c50 1538 case R_390_PLT24DBL:
69fc87f1
MS		 1539 case R_390_PLT32DBL:
1540 case R_390_PLT32:
1541 case R_390_PLTOFF16:
1542 case R_390_PLTOFF32:
1543 if (h != NULL)
1544 {
1545 if (h->plt.refcount > 0)
1546 h->plt.refcount -= 1;
1547 }
1548 break;
1549
1550 case R_390_GOTPLT12:
1551 case R_390_GOTPLT16:
bd1ea41b 1552 case R_390_GOTPLT20:
69fc87f1
MS		 1553 case R_390_GOTPLT32:
1554 case R_390_GOTPLTENT:
1555 if (h != NULL)
1556 {
1557 if (h->plt.refcount > 0)
1558 {
1559 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1560 h->plt.refcount -= 1;
1561 }
1562 }
1563 else if (local_got_refcounts != NULL)
1564 {
1565 if (local_got_refcounts[r_symndx] > 0)
1566 local_got_refcounts[r_symndx] -= 1;
1567 }
1568 break;
1569
5236c819
MS		 1570 default:
1571 break;
1572 }
1573 }
a85d7ed0 1574
b34976b6 1575 return TRUE;
a85d7ed0
NC		 1576}
1577
5236c819
MS		 1578/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1579 entry but we found we will not create any. Called when we find we will
1580 not have any PLT for this symbol, by for example
1581 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1582 or elf_s390_size_dynamic_sections if no dynamic sections will be
1583 created (we're only linking static objects). */
1584
1585static void
2c3fc389 1586elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1587{
1588 if (h->elf.root.type == bfd_link_hash_warning)
1589 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1590
1591 if (h->gotplt_refcount <= 0)
1592 return;
1593
1594 /* We simply add the number of gotplt references to the number
1595 * of got references for this symbol. */
1596 h->elf.got.refcount += h->gotplt_refcount;
1597 h->gotplt_refcount = -1;
1598}
1599
a85d7ed0
NC		 1600/* Adjust a symbol defined by a dynamic object and referenced by a
1601 regular object. The current definition is in some section of the
1602 dynamic object, but we're not including those sections. We have to
1603 change the definition to something the rest of the link can
1604 understand. */
1605
b34976b6 1606static bfd_boolean
2c3fc389
NC		 1607elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1608 struct elf_link_hash_entry *h)
a85d7ed0 1609{
0451c93c 1610 struct elf_s390_link_hash_table *htab;
5474d94f 1611 asection *s, *srel;
a85d7ed0 1612
470b557a
AK		 1613 /* STT_GNU_IFUNC symbol must go through PLT. */
1614 if (s390_is_ifunc_symbol_p (h))
d8ee9e44
AK		 1615 {
1616 /* All local STT_GNU_IFUNC references must be treated as local
1617 calls via local PLT. */
1618 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1619 {
1620 bfd_size_type pc_count = 0, count = 0;
1621 struct elf_dyn_relocs **pp;
1622 struct elf_s390_link_hash_entry *eh;
1623 struct elf_dyn_relocs *p;
1624
1625 eh = (struct elf_s390_link_hash_entry *) h;
1626 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1627 {
1628 pc_count += p->pc_count;
1629 p->count -= p->pc_count;
1630 p->pc_count = 0;
1631 count += p->count;
1632 if (p->count == 0)
1633 *pp = p->next;
1634 else
1635 pp = &p->next;
1636 }
1637
1638 if (pc_count || count)
1639 {
1640 h->needs_plt = 1;
1641 h->non_got_ref = 1;
1642 if (h->plt.refcount <= 0)
1643 h->plt.refcount = 1;
1644 else
1645 h->plt.refcount += 1;
1646 }
1647 }
1648
1649 if (h->plt.refcount <= 0)
1650 {
1651 h->plt.offset = (bfd_vma) -1;
1652 h->needs_plt = 0;
1653 }
1654 return TRUE;
1655 }
470b557a 1656
a85d7ed0
NC		 1657 /* If this is a function, put it in the procedure linkage table. We
1658 will fill in the contents of the procedure linkage table later
cedb70c5 1659 (although we could actually do it here). */
a85d7ed0 1660 if (h->type == STT_FUNC
f5385ebf 1661 || h->needs_plt)
a85d7ed0 1662 {
0451c93c 1663 if (h->plt.refcount <= 0
8c21ca21
AK		 1664 || SYMBOL_CALLS_LOCAL (info, h)
1665 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1666 && h->root.type != bfd_link_hash_undefweak))
a85d7ed0
NC		 1667 {
1668 /* This case can occur if we saw a PLT32 reloc in an input
26e41594
AM		 1669 file, but the symbol was never referred to by a dynamic
1670 object, or if all references were garbage collected. In
a85d7ed0
NC		 1671 such a case, we don't actually need to build a procedure
1672 linkage table, and we can just do a PC32 reloc instead. */
1673 h->plt.offset = (bfd_vma) -1;
f5385ebf 1674 h->needs_plt = 0;
5236c819 1675 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1676 }
1677
b34976b6 1678 return TRUE;
a85d7ed0 1679 }
bbd7ec4a 1680 else
0451c93c
MS		 1681 /* It's possible that we incorrectly decided a .plt reloc was
1682 needed for an R_390_PC32 reloc to a non-function sym in
1683 check_relocs. We can't decide accurately between function and
1684 non-function syms in check-relocs; Objects loaded later in
1685 the link may change h->type. So fix it now. */
bbd7ec4a 1686 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1687
1688 /* If this is a weak symbol, and there is a real definition, the
1689 processor independent code will have arranged for us to see the
1690 real definition first, and we can just use the same value. */
f6e332e6 1691 if (h->u.weakdef != NULL)
a85d7ed0 1692 {
f6e332e6
AM		 1693 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1694 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1695 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1696 h->root.u.def.value = h->u.weakdef->root.u.def.value;
64285810 1697 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1698 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1699 return TRUE;
a85d7ed0
NC		 1700 }
1701
1702 /* This is a reference to a symbol defined by a dynamic object which
1703 is not a function. */
1704
1705 /* If we are creating a shared library, we must presume that the
1706 only references to the symbol are via the global offset table.
1707 For such cases we need not do anything here; the relocations will
1708 be handled correctly by relocate_section. */
0e1862bb 1709 if (bfd_link_pic (info))
b34976b6 1710 return TRUE;
a85d7ed0
NC		 1711
1712 /* If there are no references to this symbol that do not use the
1713 GOT, we don't need to generate a copy reloc. */
f5385ebf 1714 if (!h->non_got_ref)
b34976b6 1715 return TRUE;
a85d7ed0 1716
0451c93c
MS		 1717 /* If -z nocopyreloc was given, we won't generate them either. */
1718 if (info->nocopyreloc)
1719 {
f5385ebf 1720 h->non_got_ref = 0;
b34976b6 1721 return TRUE;
0451c93c
MS		 1722 }
1723
64285810 1724 if (ELIMINATE_COPY_RELOCS)
0451c93c 1725 {
64285810 1726 struct elf_s390_link_hash_entry * eh;
00d8c7a9 1727 struct elf_dyn_relocs *p;
0451c93c 1728
64285810
MS		 1729 eh = (struct elf_s390_link_hash_entry *) h;
1730 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1731 {
1732 s = p->sec->output_section;
1733 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1734 break;
1735 }
1736
1737 /* If we didn't find any dynamic relocs in read-only sections, then
1738 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1739 if (p == NULL)
1740 {
f5385ebf 1741 h->non_got_ref = 0;
64285810
MS		 1742 return TRUE;
1743 }
0451c93c
MS		 1744 }
1745
a85d7ed0
NC		 1746 /* We must allocate the symbol in our .dynbss section, which will
1747 become part of the .bss section of the executable. There will be
1748 an entry for this symbol in the .dynsym section. The dynamic
1749 object will contain position independent code, so all references
1750 from the dynamic object to this symbol will go through the global
1751 offset table. The dynamic linker will use the .dynsym entry to
1752 determine the address it must put in the global offset table, so
1753 both the dynamic object and the regular object will refer to the
1754 same memory location for the variable. */
1755
0451c93c 1756 htab = elf_s390_hash_table (info);
a85d7ed0 1757
0451c93c
MS		 1758 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1759 copy the initial value out of the dynamic object and into the
1760 runtime process image. */
5474d94f
AM		 1761 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1762 {
1763 s = htab->elf.sdynrelro;
1764 srel = htab->elf.sreldynrelro;
1765 }
1766 else
1767 {
1768 s = htab->elf.sdynbss;
1769 srel = htab->elf.srelbss;
1770 }
1d7e9d18 1771 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1772 {
5474d94f 1773 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 1774 h->needs_copy = 1;
a85d7ed0
NC		 1775 }
1776
6cabe1ea 1777 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a85d7ed0
NC		 1778}
1779
0451c93c
MS		 1780/* Allocate space in .plt, .got and associated reloc sections for
1781 dynamic relocs. */
1782
b34976b6 1783static bfd_boolean
2c3fc389 1784allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1785{
1786 struct bfd_link_info *info;
1787 struct elf_s390_link_hash_table *htab;
470b557a 1788 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1789 struct elf_dyn_relocs *p;
0451c93c 1790
e92d460e 1791 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1792 return TRUE;
0451c93c
MS		 1793
1794 info = (struct bfd_link_info *) inf;
1795 htab = elf_s390_hash_table (info);
1796
470b557a
AK		 1797 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1798 here if it is defined and referenced in a non-shared object. */
1799 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
61643fba 1800 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
470b557a
AK		 1801 else if (htab->elf.dynamic_sections_created
1802 && h->plt.refcount > 0)
0451c93c
MS		 1803 {
1804 /* Make sure this symbol is output as a dynamic symbol.
1805 Undefined weak syms won't yet be marked as dynamic. */
1806 if (h->dynindx == -1
f5385ebf 1807 && !h->forced_local)
0451c93c 1808 {
c152c796 1809 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1810 return FALSE;
0451c93c
MS		 1811 }
1812
0e1862bb 1813 if (bfd_link_pic (info)
4ec72bde 1814 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1815 {
f41345a7 1816 asection *s = htab->elf.splt;
0451c93c
MS		 1817
1818 /* If this is the first .plt entry, make room for the special
1819 first entry. */
eea6121a
AM		 1820 if (s->size == 0)
1821 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1822
eea6121a 1823 h->plt.offset = s->size;
0451c93c
MS		 1824
1825 /* If this symbol is not defined in a regular file, and we are
1826 not generating a shared library, then set the symbol to this
1827 location in the .plt. This is required to make function
1828 pointers compare as equal between the normal executable and
1829 the shared library. */
0e1862bb 1830 if (! bfd_link_pic (info)
f5385ebf 1831 && !h->def_regular)
0451c93c
MS		 1832 {
1833 h->root.u.def.section = s;
1834 h->root.u.def.value = h->plt.offset;
1835 }
ec338859 1836
0451c93c 1837 /* Make room for this entry. */
eea6121a 1838 s->size += PLT_ENTRY_SIZE;
ec338859 1839
0451c93c
MS		 1840 /* We also need to make an entry in the .got.plt section, which
1841 will be placed in the .got section by the linker script. */
f41345a7 1842 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1843
1844 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1845 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1846 }
1847 else
1848 {
1849 h->plt.offset = (bfd_vma) -1;
f5385ebf 1850 h->needs_plt = 0;
5236c819 1851 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c 1852 }
ec338859 1853 }
0451c93c
MS		 1854 else
1855 {
1856 h->plt.offset = (bfd_vma) -1;
f5385ebf 1857 h->needs_plt = 0;
5236c819 1858 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
ec338859
AM		 1859 }
1860
69fc87f1
MS		 1861 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1862 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1863 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1864 we can save the dynamic TLS relocation. */
1865 if (h->got.refcount > 0
0e1862bb 1866 && !bfd_link_pic (info)
69fc87f1
MS		 1867 && h->dynindx == -1
1868 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
0451c93c 1869 {
69fc87f1
MS		 1870 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1871 /* For the GOTIE access without a literal pool entry the offset has
1872 to be stored somewhere. The immediate value in the instruction
1873 is not bit enough so the value is stored in the got. */
1874 {
f41345a7
AK		 1875 h->got.offset = htab->elf.sgot->size;
1876 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1877 }
1878 else
1879 h->got.offset = (bfd_vma) -1;
1880 }
1881 else if (h->got.refcount > 0)
ceada896 1882 {
0451c93c 1883 asection *s;
b34976b6 1884 bfd_boolean dyn;
69fc87f1 1885 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1886
1887 /* Make sure this symbol is output as a dynamic symbol.
1888 Undefined weak syms won't yet be marked as dynamic. */
1889 if (h->dynindx == -1
f5385ebf 1890 && !h->forced_local)
0451c93c 1891 {
c152c796 1892 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1893 return FALSE;
0451c93c
MS		 1894 }
1895
f41345a7 1896 s = htab->elf.sgot;
eea6121a
AM		 1897 h->got.offset = s->size;
1898 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1899 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1900 if (tls_type == GOT_TLS_GD)
eea6121a 1901 s->size += GOT_ENTRY_SIZE;
0451c93c 1902 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1903 /* R_390_TLS_IE32 needs one dynamic relocation,
1904 R_390_TLS_GD32 needs one if local symbol and two if global. */
1905 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1906 || tls_type >= GOT_TLS_IE)
f41345a7 1907 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1 1908 else if (tls_type == GOT_TLS_GD)
f41345a7 1909 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela);
82058a73
MS		 1910 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1911 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 1912 && (bfd_link_pic (info)
82058a73 1913 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1914 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1915 }
1916 else
1917 h->got.offset = (bfd_vma) -1;
1918
0451c93c 1919 if (eh->dyn_relocs == NULL)
b34976b6 1920 return TRUE;
0451c93c
MS		 1921
1922 /* In the shared -Bsymbolic case, discard space allocated for
1923 dynamic pc-relative relocs against symbols which turn out to be
1924 defined in regular objects. For the normal shared case, discard
1925 space for pc-relative relocs that have become local due to symbol
1926 visibility changes. */
1927
0e1862bb 1928 if (bfd_link_pic (info))
0451c93c 1929 {
8c21ca21 1930 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1931 {
00d8c7a9 1932 struct elf_dyn_relocs **pp;
0451c93c
MS		 1933
1934 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1935 {
1936 p->count -= p->pc_count;
1937 p->pc_count = 0;
1938 if (p->count == 0)
1939 *pp = p->next;
1940 else
1941 pp = &p->next;
1942 }
1943 }
82058a73
MS		 1944
1945 /* Also discard relocs on undefined weak syms with non-default
1946 visibility. */
22d606e9 1947 if (eh->dyn_relocs != NULL
82058a73 1948 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 1949 {
1950 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1951 eh->dyn_relocs = NULL;
1952
1953 /* Make sure undefined weak symbols are output as a dynamic
1954 symbol in PIEs. */
1955 else if (h->dynindx == -1
1956 && !h->forced_local)
1957 {
1958 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1959 return FALSE;
1960 }
1961 }
0451c93c 1962 }
64285810 1963 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1964 {
1965 /* For the non-shared case, discard space for relocs against
1966 symbols which turn out to need copy relocs or are not
1967 dynamic. */
1968
f5385ebf
AM		 1969 if (!h->non_got_ref
1970 && ((h->def_dynamic
1971 && !h->def_regular)
0451c93c
MS		 1972 || (htab->elf.dynamic_sections_created
1973 && (h->root.type == bfd_link_hash_undefweak
1974 || h->root.type == bfd_link_hash_undefined))))
1975 {
1976 /* Make sure this symbol is output as a dynamic symbol.
1977 Undefined weak syms won't yet be marked as dynamic. */
1978 if (h->dynindx == -1
f5385ebf 1979 && !h->forced_local)
0451c93c 1980 {
c152c796 1981 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1982 return FALSE;
0451c93c
MS		 1983 }
1984
1985 /* If that succeeded, we know we'll be keeping all the
1986 relocs. */
1987 if (h->dynindx != -1)
1988 goto keep;
1989 }
1990
1991 eh->dyn_relocs = NULL;
1992
ec338859 1993 keep: ;
0451c93c
MS		 1994 }
1995
1996 /* Finally, allocate space. */
1997 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1998 {
1999 asection *sreloc = elf_section_data (p->sec)->sreloc;
ae9a127f 2000
eea6121a 2001 sreloc->size += p->count * sizeof (Elf32_External_Rela);
0451c93c
MS		 2002 }
2003
b34976b6 2004 return TRUE;
0451c93c
MS		 2005}
2006
2007/* Find any dynamic relocs that apply to read-only sections. */
2008
b34976b6 2009static bfd_boolean
2c3fc389 2010readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 2011{
2012 struct elf_s390_link_hash_entry *eh;
00d8c7a9 2013 struct elf_dyn_relocs *p;
0451c93c
MS		 2014
2015 eh = (struct elf_s390_link_hash_entry *) h;
2016 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2017 {
2018 asection *s = p->sec->output_section;
2019
2020 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2021 {
2022 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2023
2024 info->flags |= DF_TEXTREL;
2025
2026 /* Not an error, just cut short the traversal. */
b34976b6 2027 return FALSE;
0451c93c
MS		 2028 }
2029 }
b34976b6 2030 return TRUE;
0451c93c
MS		 2031}
2032
a85d7ed0
NC		 2033/* Set the sizes of the dynamic sections. */
2034
b34976b6 2035static bfd_boolean
2c3fc389
NC		 2036elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2037 struct bfd_link_info *info)
a85d7ed0 2038{
0451c93c 2039 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2040 bfd *dynobj;
2041 asection *s;
b34976b6 2042 bfd_boolean relocs;
0451c93c 2043 bfd *ibfd;
a85d7ed0 2044
0451c93c
MS		 2045 htab = elf_s390_hash_table (info);
2046 dynobj = htab->elf.dynobj;
2047 if (dynobj == NULL)
2048 abort ();
a85d7ed0 2049
0451c93c 2050 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2051 {
2052 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 2053 if (bfd_link_executable (info) && !info->nointerp)
a85d7ed0 2054 {
3d4d4302 2055 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 2056 if (s == NULL)
2057 abort ();
eea6121a 2058 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 2059 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2060 }
2061 }
a85d7ed0 2062
0451c93c
MS		 2063 /* Set up .got offsets for local syms, and space for local dynamic
2064 relocs. */
c72f2fb2 2065 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a85d7ed0 2066 {
0451c93c
MS		 2067 bfd_signed_vma *local_got;
2068 bfd_signed_vma *end_local_got;
69fc87f1 2069 char *local_tls_type;
0451c93c
MS		 2070 bfd_size_type locsymcount;
2071 Elf_Internal_Shdr *symtab_hdr;
2072 asection *srela;
470b557a
AK		 2073 struct plt_entry *local_plt;
2074 unsigned int i;
a85d7ed0 2075
0ffa91dd 2076 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 2077 continue;
2078
0451c93c 2079 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 2080 {
00d8c7a9 2081 struct elf_dyn_relocs *p;
0451c93c 2082
6edfbbad 2083 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 2084 {
ec338859
AM		 2085 if (!bfd_is_abs_section (p->sec)
2086 && bfd_is_abs_section (p->sec->output_section))
2087 {
2088 /* Input section has been discarded, either because
2089 it is a copy of a linkonce section or due to
2090 linker script /DISCARD/, so we'll be discarding
2091 the relocs too. */
2092 }
248866a8 2093 else if (p->count != 0)
ec338859
AM		 2094 {
2095 srela = elf_section_data (p->sec)->sreloc;
eea6121a 2096 srela->size += p->count * sizeof (Elf32_External_Rela);
248866a8
AM		 2097 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2098 info->flags |= DF_TEXTREL;
ec338859 2099 }
a85d7ed0
NC		 2100 }
2101 }
0451c93c
MS		 2102
2103 local_got = elf_local_got_refcounts (ibfd);
2104 if (!local_got)
2105 continue;
2106
0ffa91dd 2107 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 2108 locsymcount = symtab_hdr->sh_info;
2109 end_local_got = local_got + locsymcount;
69fc87f1 2110 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 2111 s = htab->elf.sgot;
2112 srela = htab->elf.srelgot;
69fc87f1 2113 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 2114 {
0451c93c 2115 if (*local_got > 0)
a85d7ed0 2116 {
eea6121a
AM		 2117 *local_got = s->size;
2118 s->size += GOT_ENTRY_SIZE;
69fc87f1 2119 if (*local_tls_type == GOT_TLS_GD)
eea6121a 2120 s->size += GOT_ENTRY_SIZE;
0e1862bb 2121 if (bfd_link_pic (info))
eea6121a 2122 srela->size += sizeof (Elf32_External_Rela);
a85d7ed0
NC		 2123 }
2124 else
0451c93c
MS		 2125 *local_got = (bfd_vma) -1;
2126 }
470b557a
AK		 2127 local_plt = elf_s390_local_plt (ibfd);
2128 for (i = 0; i < symtab_hdr->sh_info; i++)
2129 {
2130 if (local_plt[i].plt.refcount > 0)
2131 {
2132 local_plt[i].plt.offset = htab->elf.iplt->size;
2133 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2134 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2135 htab->elf.irelplt->size += RELA_ENTRY_SIZE;
2136 }
2137 else
2138 local_plt[i].plt.offset = (bfd_vma) -1;
2139 }
0451c93c
MS		 2140 }
2141
69fc87f1
MS		 2142 if (htab->tls_ldm_got.refcount > 0)
2143 {
2144 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2145 relocs. */
f41345a7
AK		 2146 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2147 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2148 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1
MS		 2149 }
2150 else
2151 htab->tls_ldm_got.offset = -1;
2152
0451c93c
MS		 2153 /* Allocate global sym .plt and .got entries, and space for global
2154 sym dynamic relocs. */
2c3fc389 2155 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 2156
2157 /* We now have determined the sizes of the various dynamic sections.
2158 Allocate memory for them. */
b34976b6 2159 relocs = FALSE;
0451c93c
MS		 2160 for (s = dynobj->sections; s != NULL; s = s->next)
2161 {
2162 if ((s->flags & SEC_LINKER_CREATED) == 0)
2163 continue;
2164
f41345a7
AK		 2165 if (s == htab->elf.splt
2166 || s == htab->elf.sgot
2167 || s == htab->elf.sgotplt
9d19e4fd 2168 || s == htab->elf.sdynbss
5474d94f 2169 || s == htab->elf.sdynrelro
470b557a
AK		 2170 || s == htab->elf.iplt
2171 || s == htab->elf.igotplt
2172 || s == htab->irelifunc)
0451c93c
MS		 2173 {
2174 /* Strip this section if we don't need it; see the
2175 comment below. */
a85d7ed0 2176 }
0112cd26 2177 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 2178 {
eea6121a 2179 if (s->size != 0)
b34976b6 2180 relocs = TRUE;
ec338859 2181
0451c93c
MS		 2182 /* We use the reloc_count field as a counter if we need
2183 to copy relocs into the output file. */
2184 s->reloc_count = 0;
2185 }
2186 else
a85d7ed0
NC		 2187 {
2188 /* It's not one of our sections, so don't allocate space. */
2189 continue;
2190 }
2191
eea6121a 2192 if (s->size == 0)
a85d7ed0 2193 {
0451c93c
MS		 2194 /* If we don't need this section, strip it from the
2195 output file. This is to handle .rela.bss and
2196 .rela.plt. We must create it in
2197 create_dynamic_sections, because it must be created
2198 before the linker maps input sections to output
2199 sections. The linker does that before
2200 adjust_dynamic_symbol is called, and it is that
2201 function which decides whether anything needs to go
2202 into these sections. */
2203
8423293d 2204 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 2205 continue;
2206 }
2207
c456f082
AM		 2208 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2209 continue;
2210
0451c93c
MS		 2211 /* Allocate memory for the section contents. We use bfd_zalloc
2212 here in case unused entries are not reclaimed before the
2213 section's contents are written out. This should not happen,
2214 but this way if it does, we get a R_390_NONE reloc instead
2215 of garbage. */
eea6121a 2216 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 2217 if (s->contents == NULL)
b34976b6 2218 return FALSE;
a85d7ed0 2219 }
ec338859 2220
0451c93c 2221 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2222 {
2223 /* Add some entries to the .dynamic section. We fill in the
2224 values later, in elf_s390_finish_dynamic_sections, but we
2225 must add the entries now so that we get the correct size for
2226 the .dynamic section. The DT_DEBUG entry is filled in by the
2227 dynamic linker and used by the debugger. */
dc810e39 2228#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2229 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
ec338859 2230
0e1862bb 2231 if (bfd_link_executable (info))
a85d7ed0 2232 {
dc810e39 2233 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2234 return FALSE;
a85d7ed0 2235 }
ec338859 2236
f41345a7 2237 if (htab->elf.splt->size != 0)
a85d7ed0 2238 {
dc810e39
AM		 2239 if (!add_dynamic_entry (DT_PLTGOT, 0)
2240 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2241 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2242 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2243 return FALSE;
a85d7ed0 2244 }
ec338859 2245
a85d7ed0 2246 if (relocs)
26e41594
AM		 2247 {
2248 if (!add_dynamic_entry (DT_RELA, 0)
2249 || !add_dynamic_entry (DT_RELASZ, 0)
2250 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 2251 return FALSE;
a85d7ed0 2252
0451c93c
MS		 2253 /* If any dynamic relocs apply to a read-only section,
2254 then we need a DT_TEXTREL entry. */
248866a8 2255 if ((info->flags & DF_TEXTREL) == 0)
2c3fc389 2256 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
ec338859 2257
0451c93c
MS		 2258 if ((info->flags & DF_TEXTREL) != 0)
2259 {
2260 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2261 return FALSE;
0451c93c 2262 }
a85d7ed0
NC		 2263 }
2264 }
dc810e39 2265#undef add_dynamic_entry
ec338859 2266
b34976b6 2267 return TRUE;
a85d7ed0
NC		 2268}
2269
69fc87f1
MS		 2270/* Return the base VMA address which should be subtracted from real addresses
2271 when resolving @dtpoff relocation.
2272 This is PT_TLS segment p_vaddr. */
2273
2274static bfd_vma
2c3fc389 2275dtpoff_base (struct bfd_link_info *info)
69fc87f1 2276{
e1918d23
AM		 2277 /* If tls_sec is NULL, we should have signalled an error already. */
2278 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2279 return 0;
e1918d23 2280 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2281}
2282
2283/* Return the relocation value for @tpoff relocation
2284 if STT_TLS virtual address is ADDRESS. */
2285
2286static bfd_vma
2c3fc389 2287tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2288{
e1918d23 2289 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2290
e1918d23
AM		 2291 /* If tls_sec is NULL, we should have signalled an error already. */
2292 if (htab->tls_sec == NULL)
69fc87f1 2293 return 0;
e1918d23 2294 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2295}
2296
2297/* Complain if TLS instruction relocation is against an invalid
2298 instruction. */
2299
2300static void
2c3fc389
NC		 2301invalid_tls_insn (bfd *input_bfd,
2302 asection *input_section,
2303 Elf_Internal_Rela *rel)
69fc87f1
MS		 2304{
2305 reloc_howto_type *howto;
2306
2307 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
4eca0228 2308 _bfd_error_handler
695344c0 2309 /* xgettext:c-format */
d003868e
AM		 2310 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2311 input_bfd,
2312 input_section,
69fc87f1
MS		 2313 (long) rel->r_offset,
2314 howto->name);
77df2968 2315 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2316}
2317
a85d7ed0
NC		 2318/* Relocate a 390 ELF section. */
2319
b34976b6 2320static bfd_boolean
2c3fc389
NC		 2321elf_s390_relocate_section (bfd *output_bfd,
2322 struct bfd_link_info *info,
2323 bfd *input_bfd,
2324 asection *input_section,
2325 bfd_byte *contents,
2326 Elf_Internal_Rela *relocs,
2327 Elf_Internal_Sym *local_syms,
2328 asection **local_sections)
a85d7ed0 2329{
0451c93c 2330 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2331 Elf_Internal_Shdr *symtab_hdr;
2332 struct elf_link_hash_entry **sym_hashes;
2333 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2334 Elf_Internal_Rela *rel;
2335 Elf_Internal_Rela *relend;
2336
0ffa91dd
NC		 2337 BFD_ASSERT (is_s390_elf (input_bfd));
2338
0451c93c 2339 htab = elf_s390_hash_table (info);
0ffa91dd 2340 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2341 sym_hashes = elf_sym_hashes (input_bfd);
2342 local_got_offsets = elf_local_got_offsets (input_bfd);
2343
a85d7ed0
NC		 2344 rel = relocs;
2345 relend = relocs + input_section->reloc_count;
2346 for (; rel < relend; rel++)
2347 {
5236c819 2348 unsigned int r_type;
a85d7ed0
NC		 2349 reloc_howto_type *howto;
2350 unsigned long r_symndx;
2351 struct elf_link_hash_entry *h;
2352 Elf_Internal_Sym *sym;
2353 asection *sec;
0451c93c 2354 bfd_vma off;
a85d7ed0 2355 bfd_vma relocation;
b34976b6 2356 bfd_boolean unresolved_reloc;
a85d7ed0 2357 bfd_reloc_status_type r;
69fc87f1 2358 int tls_type;
470b557a 2359 asection *base_got = htab->elf.sgot;
ec338859 2360
a85d7ed0
NC		 2361 r_type = ELF32_R_TYPE (rel->r_info);
2362 if (r_type == (int) R_390_GNU_VTINHERIT
26e41594
AM		 2363 || r_type == (int) R_390_GNU_VTENTRY)
2364 continue;
5236c819 2365 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2366 {
2367 bfd_set_error (bfd_error_bad_value);
b34976b6 2368 return FALSE;
a85d7ed0 2369 }
ec338859 2370
b491616a 2371 howto = elf_howto_table + r_type;
a85d7ed0 2372 r_symndx = ELF32_R_SYM (rel->r_info);
5236c819 2373
a85d7ed0
NC		 2374 h = NULL;
2375 sym = NULL;
2376 sec = NULL;
b34976b6 2377 unresolved_reloc = FALSE;
a85d7ed0
NC		 2378 if (r_symndx < symtab_hdr->sh_info)
2379 {
2380 sym = local_syms + r_symndx;
2381 sec = local_sections[r_symndx];
470b557a
AK		 2382 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2383 {
2384 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2385 if (local_plt == NULL)
2386 return FALSE;
2387
2388 /* Address of the PLT slot. */
2389 relocation = (htab->elf.iplt->output_section->vma
2390 + htab->elf.iplt->output_offset
2391 + local_plt[r_symndx].plt.offset);
2392
2393 switch (r_type)
2394 {
31db78f6
AK		 2395 case R_390_PLTOFF16:
2396 case R_390_PLTOFF32:
2397 relocation -= htab->elf.sgot->output_section->vma;
2398 break;
470b557a
AK		 2399 case R_390_GOTPLT12:
2400 case R_390_GOTPLT16:
2401 case R_390_GOTPLT20:
2402 case R_390_GOTPLT32:
2403 case R_390_GOTPLTENT:
2404 case R_390_GOT12:
2405 case R_390_GOT16:
2406 case R_390_GOT20:
2407 case R_390_GOT32:
2408 case R_390_GOTENT:
2409 {
2410 /* Write the PLT slot address into the GOT slot. */
2411 bfd_put_32 (output_bfd, relocation,
2412 htab->elf.sgot->contents +
2413 local_got_offsets[r_symndx]);
2414 relocation = (local_got_offsets[r_symndx] +
2415 htab->elf.sgot->output_offset);
2416
2417 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2418 relocation += htab->elf.sgot->output_section->vma;
2419 break;
2420 }
2421 default:
2422 break;
2423 }
2424 /* The output section is needed later in
2425 finish_dynamic_section when creating the dynamic
2426 relocation. */
2427 local_plt[r_symndx].sec = sec;
2428 goto do_relocation;
2429 }
2430 else
2431 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2432 }
2433 else
2434 {
560e09e9 2435 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2436 bfd_boolean ignored ATTRIBUTE_UNUSED;
ec338859 2437
b2a8e766
AM		 2438 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2439 r_symndx, symtab_hdr, sym_hashes,
2440 h, sec, relocation,
62d887d4 2441 unresolved_reloc, warned, ignored);
a85d7ed0 2442 }
ec338859 2443
dbaa2011 2444 if (sec != NULL && discarded_section (sec))
e4067dbb 2445 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2446 rel, 1, relend, howto, 0, contents);
ab96bf03 2447
0e1862bb 2448 if (bfd_link_relocatable (info))
ab96bf03
AM		 2449 continue;
2450
a85d7ed0
NC		 2451 switch (r_type)
2452 {
5236c819
MS		 2453 case R_390_GOTPLT12:
2454 case R_390_GOTPLT16:
bd1ea41b 2455 case R_390_GOTPLT20:
5236c819
MS		 2456 case R_390_GOTPLT32:
2457 case R_390_GOTPLTENT:
2458 /* There are three cases for a GOTPLT relocation. 1) The
2459 relocation is against the jump slot entry of a plt that
2460 will get emitted to the output file. 2) The relocation
2461 is against the jump slot of a plt entry that has been
2462 removed. elf_s390_adjust_gotplt has created a GOT entry
2463 as replacement. 3) The relocation is against a local symbol.
2464 Cases 2) and 3) are the same as the GOT relocation code
2465 so we just have to test for case 1 and fall through for
2466 the other two. */
2467 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2468 {
2469 bfd_vma plt_index;
2470
470b557a
AK		 2471 if (s390_is_ifunc_symbol_p (h))
2472 {
2473 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2474 relocation = (plt_index * GOT_ENTRY_SIZE +
2475 htab->elf.igotplt->output_offset);
2476 if (r_type == R_390_GOTPLTENT)
2477 relocation += htab->elf.igotplt->output_section->vma;
2478 }
2479 else
2480 {
2481 /* Calc. index no.
2482 Current offset - size first entry / entry size. */
2483 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2484 PLT_ENTRY_SIZE;
2485
2486 /* Offset in GOT is PLT index plus GOT headers(3)
2487 times 4, addr & GOT addr. */
2488 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2489 if (r_type == R_390_GOTPLTENT)
2490 relocation += htab->elf.sgot->output_section->vma;
2491 }
5236c819
MS		 2492 unresolved_reloc = FALSE;
2493
5236c819
MS		 2494 }
2495 /* Fall through. */
2496
26e41594
AM		 2497 case R_390_GOT12:
2498 case R_390_GOT16:
bd1ea41b 2499 case R_390_GOT20:
26e41594 2500 case R_390_GOT32:
befc3abb 2501 case R_390_GOTENT:
26e41594
AM		 2502 /* Relocation is to the entry for this symbol in the global
2503 offset table. */
470b557a 2504 if (base_got == NULL)
0451c93c 2505 abort ();
ec338859 2506
26e41594
AM		 2507 if (h != NULL)
2508 {
b34976b6 2509 bfd_boolean dyn;
ec338859 2510
26e41594 2511 off = h->got.offset;
0451c93c 2512 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2513
2514 if (s390_is_ifunc_symbol_p (h))
2515 {
2516 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2517 if (off == (bfd_vma)-1)
2518 {
2519 /* No explicit GOT usage so redirect to the
2520 got.iplt slot. */
2521 base_got = htab->elf.igotplt;
2522 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2523 }
2524 else
2525 {
2526 /* Explicit GOT slots must contain the address
2527 of the PLT slot. This will be handled in
2528 finish_dynamic_symbol. */
2529 }
2530 }
0e1862bb
L		 2531 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2532 bfd_link_pic (info),
2533 h)
2534 || (bfd_link_pic (info)
470b557a
AK		 2535 && SYMBOL_REFERENCES_LOCAL (info, h))
2536 || (ELF_ST_VISIBILITY (h->other)
2537 && h->root.type == bfd_link_hash_undefweak))
2538
26e41594
AM		 2539 {
2540 /* This is actually a static link, or it is a
2541 -Bsymbolic link and the symbol is defined
2542 locally, or the symbol was forced to be local
2543 because of a version file. We must initialize
2544 this entry in the global offset table. Since the
2545 offset must always be a multiple of 2, we use the
2546 least significant bit to record whether we have
2547 initialized it already.
2548
2549 When doing a dynamic link, we create a .rel.got
2550 relocation entry to initialize the value. This
2551 is done in the finish_dynamic_symbol routine. */
2552 if ((off & 1) != 0)
2553 off &= ~1;
2554 else
2555 {
a85d7ed0 2556 bfd_put_32 (output_bfd, relocation,
470b557a 2557 base_got->contents + off);
26e41594
AM		 2558 h->got.offset |= 1;
2559 }
a63cc5f7
AK		 2560
2561 if ((h->def_regular
0e1862bb 2562 && bfd_link_pic (info)
a63cc5f7
AK		 2563 && SYMBOL_REFERENCES_LOCAL (info, h))
2564 /* lrl rx,sym@GOTENT -> larl rx, sym */
2565 && ((r_type == R_390_GOTENT
2566 && (bfd_get_16 (input_bfd,
2567 contents + rel->r_offset - 2)
2568 & 0xff0f) == 0xc40d)
2569 /* ly rx, sym@GOT(r12) -> larl rx, sym */
2570 || (r_type == R_390_GOT20
2571 && (bfd_get_32 (input_bfd,
2572 contents + rel->r_offset - 2)
2573 & 0xff00f000) == 0xe300c000
2574 && bfd_get_8 (input_bfd,
2575 contents + rel->r_offset + 3) == 0x58)))
2576 {
2577 unsigned short new_insn =
2578 (0xc000 | (bfd_get_8 (input_bfd,
2579 contents + rel->r_offset - 1) & 0xf0));
2580 bfd_put_16 (output_bfd, new_insn,
2581 contents + rel->r_offset - 2);
2582 r_type = R_390_PC32DBL;
2583 rel->r_addend = 2;
2584 howto = elf_howto_table + r_type;
2585 relocation = h->root.u.def.value
2586 + h->root.u.def.section->output_section->vma
2587 + h->root.u.def.section->output_offset;
2588 goto do_relocation;
2589 }
26e41594 2590 }
0451c93c 2591 else
b34976b6 2592 unresolved_reloc = FALSE;
26e41594
AM		 2593 }
2594 else
2595 {
0451c93c
MS		 2596 if (local_got_offsets == NULL)
2597 abort ();
a85d7ed0 2598
26e41594 2599 off = local_got_offsets[r_symndx];
a85d7ed0 2600
26e41594
AM		 2601 /* The offset must always be a multiple of 4. We use
2602 the least significant bit to record whether we have
2603 already generated the necessary reloc. */
2604 if ((off & 1) != 0)
2605 off &= ~1;
2606 else
2607 {
2608 bfd_put_32 (output_bfd, relocation,
f41345a7 2609 htab->elf.sgot->contents + off);
a85d7ed0 2610
0e1862bb 2611 if (bfd_link_pic (info))
26e41594
AM		 2612 {
2613 asection *srelgot;
2614 Elf_Internal_Rela outrel;
947216bf 2615 bfd_byte *loc;
a85d7ed0 2616
f41345a7 2617 srelgot = htab->elf.srelgot;
0451c93c
MS		 2618 if (srelgot == NULL)
2619 abort ();
a85d7ed0 2620
f41345a7
AK		 2621 outrel.r_offset = (htab->elf.sgot->output_section->vma
2622 + htab->elf.sgot->output_offset
26e41594
AM		 2623 + off);
2624 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2625 outrel.r_addend = relocation;
947216bf
AM		 2626 loc = srelgot->contents;
2627 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
26e41594
AM		 2628 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2629 }
a85d7ed0 2630
26e41594
AM		 2631 local_got_offsets[r_symndx] |= 1;
2632 }
2633 }
a85d7ed0 2634
0451c93c
MS		 2635 if (off >= (bfd_vma) -2)
2636 abort ();
a85d7ed0 2637
470b557a 2638 relocation = base_got->output_offset + off;
befc3abb 2639
ae9a127f
NC		 2640 /* For @GOTENT the relocation is against the offset between
2641 the instruction and the symbols entry in the GOT and not
2642 between the start of the GOT and the symbols entry. We
2643 add the vma of the GOT to get the correct value. */
5236c819
MS		 2644 if ( r_type == R_390_GOTENT
2645 || r_type == R_390_GOTPLTENT)
470b557a 2646 relocation += base_got->output_section->vma;
befc3abb 2647
26e41594 2648 break;
dc810e39 2649
5236c819 2650 case R_390_GOTOFF16:
26e41594
AM		 2651 case R_390_GOTOFF32:
2652 /* Relocation is relative to the start of the global offset
2653 table. */
2654
01a53584
AK		 2655 if (h != NULL
2656 && s390_is_ifunc_symbol_p (h)
2657 && h->def_regular
2658 && !bfd_link_executable (info))
2659 {
2660 relocation = (htab->elf.iplt->output_section->vma
2661 + htab->elf.iplt->output_offset
2662 + h->plt.offset
2663 - htab->elf.sgot->output_section->vma);
2664 goto do_relocation;
2665 }
2666
26e41594
AM		 2667 /* Note that sgot->output_offset is not involved in this
2668 calculation. We always want the start of .got. If we
2669 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2670 permitted by the ABI, we might have to change this
2671 calculation. */
f41345a7 2672 relocation -= htab->elf.sgot->output_section->vma;
26e41594
AM		 2673 break;
2674
2675 case R_390_GOTPC:
befc3abb 2676 case R_390_GOTPCDBL:
26e41594 2677 /* Use global offset table as symbol value. */
f41345a7 2678 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2679 unresolved_reloc = FALSE;
26e41594 2680 break;
a85d7ed0 2681
fb798c50 2682 case R_390_PLT12DBL:
26e41594 2683 case R_390_PLT16DBL:
fb798c50 2684 case R_390_PLT24DBL:
26e41594
AM		 2685 case R_390_PLT32DBL:
2686 case R_390_PLT32:
2687 /* Relocation is to the entry for this symbol in the
2688 procedure linkage table. */
a85d7ed0 2689
26e41594
AM		 2690 /* Resolve a PLT32 reloc against a local symbol directly,
2691 without using the procedure linkage table. */
2692 if (h == NULL)
2693 break;
a85d7ed0 2694
26e41594 2695 if (h->plt.offset == (bfd_vma) -1
470b557a 2696 || (htab->elf.splt == NULL && htab->elf.iplt == NULL))
26e41594
AM		 2697 {
2698 /* We didn't make a PLT entry for this symbol. This
2699 happens when statically linking PIC code, or when
2700 using -Bsymbolic. */
2701 break;
2702 }
2703
470b557a
AK		 2704 if (s390_is_ifunc_symbol_p (h))
2705 relocation = (htab->elf.iplt->output_section->vma
2706 + htab->elf.iplt->output_offset
2707 + h->plt.offset);
2708 else
2709 relocation = (htab->elf.splt->output_section->vma
2710 + htab->elf.splt->output_offset
2711 + h->plt.offset);
b34976b6 2712 unresolved_reloc = FALSE;
26e41594 2713 break;
a85d7ed0 2714
5236c819
MS		 2715 case R_390_PLTOFF16:
2716 case R_390_PLTOFF32:
26e41594
AM		 2717 /* Relocation is to the entry for this symbol in the
2718 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2719
2720 /* For local symbols or if we didn't make a PLT entry for
2721 this symbol resolve the symbol directly. */
31db78f6 2722 if (h == NULL
5236c819 2723 || h->plt.offset == (bfd_vma) -1
31db78f6 2724 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2725 {
f41345a7 2726 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS		 2727 break;
2728 }
2729
470b557a
AK		 2730 if (s390_is_ifunc_symbol_p (h))
2731 relocation = (htab->elf.iplt->output_section->vma
2732 + htab->elf.iplt->output_offset
2733 + h->plt.offset
2734 - htab->elf.sgot->output_section->vma);
2735 else
2736 relocation = (htab->elf.splt->output_section->vma
2737 + htab->elf.splt->output_offset
2738 + h->plt.offset
2739 - htab->elf.sgot->output_section->vma);
5236c819 2740 unresolved_reloc = FALSE;
26e41594
AM		 2741 break;
2742
26e41594 2743 case R_390_PC16:
fb798c50 2744 case R_390_PC12DBL:
26e41594 2745 case R_390_PC16DBL:
fb798c50 2746 case R_390_PC24DBL:
26e41594
AM		 2747 case R_390_PC32DBL:
2748 case R_390_PC32:
99ba5125
AK		 2749 if (h != NULL
2750 && s390_is_ifunc_symbol_p (h)
2751 && h->def_regular
2752 && !bfd_link_executable (info))
2753 {
2754 /* This will not work our if the function does not
2755 happen to set up the GOT pointer for some other
2756 reason. 31 bit PLT entries require r12 to hold the
2757 GOT pointer.
2758 FIXME: Implement an errorcheck.
2759 NOTE: It will work when brasl is not available
2760 (e.g. with -m31 -march=g5) since a local function
2761 call then does use GOTOFF which implies r12 being set
2762 up. */
2763 relocation = (htab->elf.iplt->output_section->vma
2764 + htab->elf.iplt->output_offset
2765 + h ->plt.offset);
2766 goto do_relocation;
2767 }
1a0670f3 2768 /* Fall through. */
99ba5125
AK		 2769
2770 case R_390_8:
2771 case R_390_16:
2772 case R_390_32:
470b557a
AK		 2773 if (h != NULL
2774 && s390_is_ifunc_symbol_p (h)
2775 && h->def_regular)
2776 {
0e1862bb 2777 if (!bfd_link_pic (info) || !h->non_got_ref)
470b557a
AK		 2778 {
2779 /* For a non-shared object STT_GNU_IFUNC symbol must
2780 go through PLT. */
2781 relocation = (htab->elf.iplt->output_section->vma
2782 + htab->elf.iplt->output_offset
2783 + h ->plt.offset);
2784 goto do_relocation;
2785 }
2786 else
2787 {
2788 /* For shared objects a runtime relocation is needed. */
2789
2790 Elf_Internal_Rela outrel;
2791 asection *sreloc;
2792
2793 /* Need a dynamic relocation to get the real function
2794 address. */
2795 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2796 info,
2797 input_section,
2798 rel->r_offset);
2799 if (outrel.r_offset == (bfd_vma) -1
2800 || outrel.r_offset == (bfd_vma) -2)
2801 abort ();
2802
2803 outrel.r_offset += (input_section->output_section->vma
2804 + input_section->output_offset);
2805
2806 if (h->dynindx == -1
2807 || h->forced_local
0e1862bb 2808 || bfd_link_executable (info))
470b557a
AK		 2809 {
2810 /* This symbol is resolved locally. */
2811 outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
2812 outrel.r_addend = (h->root.u.def.value
2813 + h->root.u.def.section->output_section->vma
2814 + h->root.u.def.section->output_offset);
2815 }
2816 else
2817 {
2818 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2819 outrel.r_addend = 0;
2820 }
2821
2822 sreloc = htab->elf.irelifunc;
2823 elf_append_rela (output_bfd, sreloc, &outrel);
2824
2825 /* If this reloc is against an external symbol, we
2826 do not want to fiddle with the addend. Otherwise,
2827 we need to include the symbol value so that it
2828 becomes an addend for the dynamic reloc. For an
2829 internal symbol, we have updated addend. */
2830 continue;
2831 }
2832 }
2833
b1e24c02 2834 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2835 break;
2836
0e1862bb 2837 if ((bfd_link_pic (info)
82058a73
MS		 2838 && (h == NULL
2839 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2840 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2841 && ((r_type != R_390_PC16
fb798c50 2842 && r_type != R_390_PC12DBL
0451c93c 2843 && r_type != R_390_PC16DBL
fb798c50 2844 && r_type != R_390_PC24DBL
befc3abb 2845 && r_type != R_390_PC32DBL
0451c93c 2846 && r_type != R_390_PC32)
8c21ca21 2847 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810 2848 || (ELIMINATE_COPY_RELOCS
0e1862bb 2849 && !bfd_link_pic (info)
0451c93c
MS		 2850 && h != NULL
2851 && h->dynindx != -1
f5385ebf
AM		 2852 && !h->non_got_ref
2853 && ((h->def_dynamic
2854 && !h->def_regular)
0451c93c
MS		 2855 || h->root.type == bfd_link_hash_undefweak
2856 || h->root.type == bfd_link_hash_undefined)))
26e41594
AM		 2857 {
2858 Elf_Internal_Rela outrel;
2859 bfd_boolean skip, relocate;
0451c93c 2860 asection *sreloc;
947216bf 2861 bfd_byte *loc;
ec338859 2862
0451c93c
MS		 2863 /* When generating a shared object, these relocations
2864 are copied into the output file to be resolved at run
2865 time. */
ec338859 2866
26e41594
AM		 2867 skip = FALSE;
2868 relocate = FALSE;
ec338859 2869
c629eae0
JJ		 2870 outrel.r_offset =
2871 _bfd_elf_section_offset (output_bfd, info, input_section,
2872 rel->r_offset);
2873 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2874 skip = TRUE;
0bb2d96a 2875 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2876 skip = TRUE, relocate = TRUE;
26e41594
AM		 2877 outrel.r_offset += (input_section->output_section->vma
2878 + input_section->output_offset);
ec338859 2879
26e41594 2880 if (skip)
0bb2d96a 2881 memset (&outrel, 0, sizeof outrel);
26e41594 2882 else if (h != NULL
0451c93c
MS		 2883 && h->dynindx != -1
2884 && (r_type == R_390_PC16
fb798c50 2885 || r_type == R_390_PC12DBL
0451c93c 2886 || r_type == R_390_PC16DBL
fb798c50 2887 || r_type == R_390_PC24DBL
befc3abb 2888 || r_type == R_390_PC32DBL
0451c93c 2889 || r_type == R_390_PC32
0e1862bb 2890 || !bfd_link_pic (info)
8c21ca21 2891 || !SYMBOLIC_BIND (info, h)
f5385ebf 2892 || !h->def_regular))
26e41594
AM		 2893 {
2894 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
27018c3f 2895 outrel.r_addend = rel->r_addend;
26e41594
AM		 2896 }
2897 else
2898 {
0451c93c 2899 /* This symbol is local, or marked to become local. */
90ced0dd 2900 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2901 if (r_type == R_390_32)
2902 {
2903 relocate = TRUE;
2904 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2905 }
2906 else
2907 {
2908 long sindx;
2909
90ced0dd 2910 if (bfd_is_abs_section (sec))
b5727d75
MS		 2911 sindx = 0;
2912 else if (sec == NULL || sec->owner == NULL)
2913 {
2914 bfd_set_error(bfd_error_bad_value);
2915 return FALSE;
2916 }
2917 else
2918 {
2919 asection *osec;
2920
2921 osec = sec->output_section;
2922 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2923 if (sindx == 0)
2924 {
2925 osec = htab->elf.text_index_section;
2926 sindx = elf_section_data (osec)->dynindx;
2927 }
2928 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2929
2930 /* We are turning this relocation into one
2931 against a section symbol, so subtract out
2932 the output section's address but not the
2933 offset of the input section in the output
2934 section. */
90ced0dd 2935 outrel.r_addend -= osec->vma;
b5727d75
MS		 2936 }
2937 outrel.r_info = ELF32_R_INFO (sindx, r_type);
b5727d75 2938 }
26e41594 2939 }
ec338859 2940
0451c93c
MS		 2941 sreloc = elf_section_data (input_section)->sreloc;
2942 if (sreloc == NULL)
2943 abort ();
ec338859 2944
947216bf
AM		 2945 loc = sreloc->contents;
2946 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 2947 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
ec338859 2948
26e41594
AM		 2949 /* If this reloc is against an external symbol, we do
2950 not want to fiddle with the addend. Otherwise, we
2951 need to include the symbol value so that it becomes
2952 an addend for the dynamic reloc. */
2953 if (! relocate)
2954 continue;
2955 }
0451c93c 2956 break;
ec338859 2957
69fc87f1
MS		 2958 /* Relocations for tls literal pool entries. */
2959 case R_390_TLS_IE32:
0e1862bb 2960 if (bfd_link_pic (info))
69fc87f1
MS		 2961 {
2962 Elf_Internal_Rela outrel;
2963 asection *sreloc;
2964 bfd_byte *loc;
2965
2966 outrel.r_offset = rel->r_offset
2967 + input_section->output_section->vma
2968 + input_section->output_offset;
2969 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2970 sreloc = elf_section_data (input_section)->sreloc;
2971 if (sreloc == NULL)
2972 abort ();
2973 loc = sreloc->contents;
2974 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2975 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2976 }
ae9a127f 2977 /* Fall through. */
69fc87f1
MS		 2978
2979 case R_390_TLS_GD32:
2980 case R_390_TLS_GOTIE32:
2981 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2982 tls_type = GOT_UNKNOWN;
2983 if (h == NULL && local_got_offsets)
2984 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2985 else if (h != NULL)
2986 {
2987 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb
L		 2988 if (!bfd_link_pic (info)
2989 && h->dynindx == -1
2990 && tls_type >= GOT_TLS_IE)
69fc87f1
MS		 2991 r_type = R_390_TLS_LE32;
2992 }
2993 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2994 r_type = R_390_TLS_IE32;
2995
2996 if (r_type == R_390_TLS_LE32)
2997 {
2998 /* This relocation gets optimized away by the local exec
2999 access optimization. */
3000 BFD_ASSERT (! unresolved_reloc);
3001 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3002 contents + rel->r_offset);
3003 continue;
3004 }
3005
f41345a7 3006 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3007 abort ();
3008
3009 if (h != NULL)
3010 off = h->got.offset;
3011 else
3012 {
3013 if (local_got_offsets == NULL)
3014 abort ();
3015
3016 off = local_got_offsets[r_symndx];
3017 }
3018
3019 emit_tls_relocs:
3020
3021 if ((off & 1) != 0)
3022 off &= ~1;
26e41594 3023 else
69fc87f1
MS		 3024 {
3025 Elf_Internal_Rela outrel;
3026 bfd_byte *loc;
3027 int dr_type, indx;
3028
f41345a7 3029 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 3030 abort ();
3031
f41345a7
AK		 3032 outrel.r_offset = (htab->elf.sgot->output_section->vma
3033 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 3034
3035 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3036 if (r_type == R_390_TLS_GD32)
3037 dr_type = R_390_TLS_DTPMOD;
3038 else
3039 dr_type = R_390_TLS_TPOFF;
3040 if (dr_type == R_390_TLS_TPOFF && indx == 0)
3041 outrel.r_addend = relocation - dtpoff_base (info);
3042 else
3043 outrel.r_addend = 0;
3044 outrel.r_info = ELF32_R_INFO (indx, dr_type);
f41345a7
AK		 3045 loc = htab->elf.srelgot->contents;
3046 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3047 * sizeof (Elf32_External_Rela);
3048 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3049
3050 if (r_type == R_390_TLS_GD32)
3051 {
3052 if (indx == 0)
3053 {
26e41594 3054 BFD_ASSERT (! unresolved_reloc);
69fc87f1
MS		 3055 bfd_put_32 (output_bfd,
3056 relocation - dtpoff_base (info),
f41345a7 3057 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3058 }
3059 else
3060 {
3061 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
3062 outrel.r_offset += GOT_ENTRY_SIZE;
3063 outrel.r_addend = 0;
f41345a7 3064 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 3065 loc += sizeof (Elf32_External_Rela);
3066 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3067 }
3068 }
3069
3070 if (h != NULL)
3071 h->got.offset |= 1;
3072 else
3073 local_got_offsets[r_symndx] |= 1;
3074 }
3075
3076 if (off >= (bfd_vma) -2)
3077 abort ();
3078 if (r_type == ELF32_R_TYPE (rel->r_info))
3079 {
f41345a7 3080 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3081 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
f41345a7 3082 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3083 unresolved_reloc = FALSE;
3084 }
3085 else
3086 {
f41345a7 3087 bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 3088 contents + rel->r_offset);
3089 continue;
3090 }
3091 break;
3092
3093 case R_390_TLS_GOTIE12:
bd1ea41b 3094 case R_390_TLS_GOTIE20:
69fc87f1
MS		 3095 case R_390_TLS_IEENT:
3096 if (h == NULL)
3097 {
3098 if (local_got_offsets == NULL)
3099 abort();
3100 off = local_got_offsets[r_symndx];
0e1862bb 3101 if (bfd_link_pic (info))
69fc87f1
MS		 3102 goto emit_tls_relocs;
3103 }
3104 else
3105 {
3106 off = h->got.offset;
3107 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb
L		 3108 if (bfd_link_pic (info)
3109 || h->dynindx != -1
3110 || tls_type < GOT_TLS_IE)
69fc87f1
MS		 3111 goto emit_tls_relocs;
3112 }
3113
f41345a7 3114 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3115 abort ();
3116
3117 BFD_ASSERT (! unresolved_reloc);
3118 bfd_put_32 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 3119 htab->elf.sgot->contents + off);
3120 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3121 if (r_type == R_390_TLS_IEENT)
f41345a7 3122 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3123 unresolved_reloc = FALSE;
3124 break;
3125
3126 case R_390_TLS_LDM32:
0e1862bb 3127 if (! bfd_link_pic (info))
69fc87f1
MS		 3128 /* The literal pool entry this relocation refers to gets ignored
3129 by the optimized code of the local exec model. Do nothing
3130 and the value will turn out zero. */
3131 continue;
3132
f41345a7 3133 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3134 abort ();
3135
3136 off = htab->tls_ldm_got.offset;
3137 if (off & 1)
3138 off &= ~1;
3139 else
3140 {
3141 Elf_Internal_Rela outrel;
3142 bfd_byte *loc;
3143
f41345a7 3144 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 3145 abort ();
3146
f41345a7
AK		 3147 outrel.r_offset = (htab->elf.sgot->output_section->vma
3148 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 3149
3150 bfd_put_32 (output_bfd, 0,
f41345a7 3151 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3152 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
3153 outrel.r_addend = 0;
f41345a7
AK		 3154 loc = htab->elf.srelgot->contents;
3155 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3156 * sizeof (Elf32_External_Rela);
3157 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3158 htab->tls_ldm_got.offset |= 1;
3159 }
f41345a7 3160 relocation = htab->elf.sgot->output_offset + off;
26e41594 3161 unresolved_reloc = FALSE;
69fc87f1
MS		 3162 break;
3163
3164 case R_390_TLS_LE32:
3cbc1e5e 3165 if (bfd_link_dll (info))
69fc87f1
MS		 3166 {
3167 /* Linking a shared library with non-fpic code requires
3168 a R_390_TLS_TPOFF relocation. */
3169 Elf_Internal_Rela outrel;
3170 asection *sreloc;
3171 bfd_byte *loc;
3172 int indx;
3173
3174 outrel.r_offset = rel->r_offset
3175 + input_section->output_section->vma
3176 + input_section->output_offset;
3177 if (h != NULL && h->dynindx != -1)
3178 indx = h->dynindx;
3179 else
3180 indx = 0;
3181 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
3182 if (indx == 0)
3183 outrel.r_addend = relocation - dtpoff_base (info);
3184 else
3185 outrel.r_addend = 0;
3186 sreloc = elf_section_data (input_section)->sreloc;
3187 if (sreloc == NULL)
3188 abort ();
3189 loc = sreloc->contents;
3190 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3191 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3192 }
3193 else
3194 {
3195 BFD_ASSERT (! unresolved_reloc);
3196 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3197 contents + rel->r_offset);
3198 }
3199 continue;
3200
3201 case R_390_TLS_LDO32:
0e1862bb 3202 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 3203 relocation -= dtpoff_base (info);
3204 else
3205 /* When converting LDO to LE, we must negate. */
3206 relocation = -tpoff (info, relocation);
3207 break;
3208
3209 /* Relocations for tls instructions. */
3210 case R_390_TLS_LOAD:
3211 case R_390_TLS_GDCALL:
3212 case R_390_TLS_LDCALL:
3213 tls_type = GOT_UNKNOWN;
3214 if (h == NULL && local_got_offsets)
3215 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3216 else if (h != NULL)
3217 tls_type = elf_s390_hash_entry(h)->tls_type;
3218
3219 if (tls_type == GOT_TLS_GD)
3220 continue;
3221
3222 if (r_type == R_390_TLS_LOAD)
3223 {
0e1862bb 3224 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3225 {
3226 /* IE->LE transition. Four valid cases:
3227 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
3228 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
3229 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
3230 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3231 unsigned int insn, ry;
3232
3233 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3234 ry = 0;
3235 if ((insn & 0xff00f000) == 0x58000000)
3236 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
3237 ry = (insn & 0x000f0000);
3238 else if ((insn & 0xff0f0000) == 0x58000000)
3239 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
3240 ry = (insn & 0x0000f000) << 4;
3241 else if ((insn & 0xff00f000) == 0x5800c000)
3242 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
3243 ry = (insn & 0x000f0000);
3244 else if ((insn & 0xff0f0000) == 0x580c0000)
3245 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3246 ry = (insn & 0x0000f000) << 4;
3247 else
3248 invalid_tls_insn (input_bfd, input_section, rel);
3249 insn = 0x18000700 | (insn & 0x00f00000) | ry;
3250 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3251 }
3252 }
3253 else if (r_type == R_390_TLS_GDCALL)
3254 {
3255 unsigned int insn;
3256
3257 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3258 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 3259 (insn & 0xffff0000) != 0xc0e50000 &&
3260 (insn & 0xff000000) != 0x0d000000)
69fc87f1 3261 invalid_tls_insn (input_bfd, input_section, rel);
0e1862bb 3262 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
77df2968 3263 {
d0ddfe27
AK		 3264 if ((insn & 0xff000000) == 0x0d000000)
3265 {
3266 /* GD->LE transition.
3267 basr rx, ry -> nopr r7 */
3268 insn = 0x07070000 | (insn & 0xffff);
3269 }
3270 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 3271 {
3272 /* GD->LE transition.
3273 bas %r14,0(%rx,%r13) -> bc 0,0 */
3274 insn = 0x47000000;
3275 }
3276 else
3277 {
3278 /* GD->LE transition.
d0ddfe27 3279 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 3280 insn = 0xc0040000;
3281 bfd_put_16 (output_bfd, 0x0000,
3282 contents + rel->r_offset + 4);
3283 }
3284 }
69fc87f1 3285 else
77df2968 3286 {
d0ddfe27
AK		 3287 /* If basr is used in the pic case to invoke
3288 _tls_get_offset, something went wrong before. */
3289 if ((insn & 0xff000000) == 0x0d000000)
3290 invalid_tls_insn (input_bfd, input_section, rel);
3291
77df2968
MS		 3292 if ((insn & 0xff000000) == 0x4d000000)
3293 {
3294 /* GD->IE transition.
3295 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3296 insn = 0x5822c000;
3297 }
3298 else
3299 {
3300 /* GD->IE transition.
3301 brasl %r14,__tls_get_addr@plt ->
3302 l %r2,0(%r2,%r12) ; bcr 0,0 */
3303 insn = 0x5822c000;
3304 bfd_put_16 (output_bfd, 0x0700,
3305 contents + rel->r_offset + 4);
3306 }
3307 }
69fc87f1
MS		 3308 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3309 }
3310 else if (r_type == R_390_TLS_LDCALL)
3311 {
0e1862bb 3312 if (!bfd_link_pic (info))
69fc87f1
MS		 3313 {
3314 unsigned int insn;
3315
3316 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3317 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 3318 (insn & 0xffff0000) != 0xc0e50000 &&
3319 (insn & 0xff000000) != 0x0d000000)
69fc87f1 3320 invalid_tls_insn (input_bfd, input_section, rel);
d0ddfe27
AK		 3321
3322 if ((insn & 0xff000000) == 0x0d000000)
3323 {
3324 /* LD->LE transition.
3325 basr rx, ry -> nopr r7 */
3326 insn = 0x07070000 | (insn & 0xffff);
3327 }
3328 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 3329 {
3330 /* LD->LE transition.
3331 bas %r14,0(%rx,%r13) -> bc 0,0 */
3332 insn = 0x47000000;
3333 }
3334 else
3335 {
3336 /* LD->LE transition.
d0ddfe27 3337 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 3338 insn = 0xc0040000;
3339 bfd_put_16 (output_bfd, 0x0000,
3340 contents + rel->r_offset + 4);
3341 }
69fc87f1
MS		 3342 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3343 }
3344 }
3345 continue;
3346
0451c93c
MS		 3347 default:
3348 break;
3349 }
ec338859 3350
239e1f3a
AM		 3351 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3352 because such sections are not SEC_ALLOC and thus ld.so will
3353 not process them. */
0451c93c 3354 if (unresolved_reloc
239e1f3a 3355 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3356 && h->def_dynamic)
3357 && _bfd_elf_section_offset (output_bfd, info, input_section,
3358 rel->r_offset) != (bfd_vma) -1)
4eca0228 3359 _bfd_error_handler
695344c0 3360 /* xgettext:c-format */
843fe662 3361 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3362 input_bfd,
3363 input_section,
0451c93c 3364 (long) rel->r_offset,
843fe662 3365 howto->name,
0451c93c 3366 h->root.root.string);
ec338859 3367
470b557a
AK		 3368 do_relocation:
3369
fb798c50
AK		 3370 /* When applying a 24 bit reloc we need to start one byte
3371 earlier. Otherwise the 32 bit get/put bfd operations might
3372 access a byte after the actual section. */
3373 if (r_type == R_390_PC24DBL
3374 || r_type == R_390_PLT24DBL)
3375 rel->r_offset--;
3376
bd1ea41b
MS		 3377 if (r_type == R_390_20
3378 || r_type == R_390_GOT20
3379 || r_type == R_390_GOTPLT20
3380 || r_type == R_390_TLS_GOTIE20)
3381 {
3382 relocation += rel->r_addend;
3383 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3384 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3385 contents, rel->r_offset,
3386 relocation, 0);
3387 }
3388 else
3389 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3390 contents, rel->r_offset,
3391 relocation, rel->r_addend);
ec338859 3392
a85d7ed0
NC		 3393 if (r != bfd_reloc_ok)
3394 {
0451c93c 3395 const char *name;
ec338859 3396
0451c93c
MS		 3397 if (h != NULL)
3398 name = h->root.root.string;
3399 else
a85d7ed0 3400 {
0451c93c
MS		 3401 name = bfd_elf_string_from_elf_section (input_bfd,
3402 symtab_hdr->sh_link,
3403 sym->st_name);
3404 if (name == NULL)
b34976b6 3405 return FALSE;
0451c93c
MS		 3406 if (*name == '\0')
3407 name = bfd_section_name (input_bfd, sec);
3408 }
ec338859 3409
0451c93c 3410 if (r == bfd_reloc_overflow)
1a72702b
AM		 3411 (*info->callbacks->reloc_overflow)
3412 (info, (h ? &h->root : NULL), name, howto->name,
3413 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
0451c93c
MS		 3414 else
3415 {
4eca0228 3416 _bfd_error_handler
695344c0 3417 /* xgettext:c-format */
d003868e
AM		 3418 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3419 input_bfd, input_section,
0451c93c 3420 (long) rel->r_offset, name, (int) r);
b34976b6 3421 return FALSE;
a85d7ed0
NC		 3422 }
3423 }
3424 }
ec338859 3425
b34976b6 3426 return TRUE;
a85d7ed0
NC		 3427}
3428
470b557a
AK		 3429/* Generate the PLT slots together with the dynamic relocations needed
3430 for IFUNC symbols. */
3431
3432static void
3433elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3434 struct bfd_link_info *info,
3435 struct elf_link_hash_entry *h,
3436 struct elf_s390_link_hash_table *htab,
3437 bfd_vma iplt_offset,
3438 bfd_vma resolver_address)
3439{
3440 bfd_vma iplt_index;
3441 bfd_vma got_offset;
3442 bfd_vma igotiplt_offset;
3443 Elf_Internal_Rela rela;
3444 bfd_byte *loc;
3445 asection *plt, *gotplt, *relplt;
3446 bfd_vma relative_offset;
3447
3448 if (htab->elf.iplt == NULL
3449 || htab->elf.igotplt == NULL
3450 || htab->elf.irelplt == NULL)
3451 abort ();
3452
3453 gotplt = htab->elf.igotplt;
3454 relplt = htab->elf.irelplt;
3455
3456 /* Index of the PLT slot within iplt section. */
3457 iplt_index = iplt_offset / PLT_ENTRY_SIZE;
3458 plt = htab->elf.iplt;
3459 /* Offset into the igot.plt section. */
3460 igotiplt_offset = iplt_index * GOT_ENTRY_SIZE;
3461 /* Offset into the got section. */
3462 got_offset = igotiplt_offset + gotplt->output_offset;
3463
3464 /* S390 uses halfwords for relative branch calc! */
3465 relative_offset = - (plt->output_offset +
3466 (PLT_ENTRY_SIZE * iplt_index) + 18) / 2;
ceada896
AA		 3467 /* If offset is > 32768, branch to a previous branch
3468 390 can only handle +-64 K jumps. */
470b557a
AK		 3469 if ( -32768 > (int) relative_offset )
3470 relative_offset
3471 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3472
3473 /* Fill in the entry in the procedure linkage table. */
0e1862bb 3474 if (!bfd_link_pic (info))
470b557a
AK		 3475 {
3476 memcpy (plt->contents + iplt_offset, elf_s390_plt_entry,
3477 PLT_ENTRY_SIZE);
3478
3479 /* Adjust jump to the first plt entry. */
3480 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3481 plt->contents + iplt_offset + 20);
3482
3483 /* Push the GOT offset field. */
3484 bfd_put_32 (output_bfd,
3485 (gotplt->output_section->vma
3486 + got_offset),
3487 plt->contents + iplt_offset + 24);
3488 }
3489 else if (got_offset < 4096)
3490 {
3491 /* The GOT offset is small enough to be used directly as
3492 displacement. */
3493 memcpy (plt->contents + iplt_offset,
3494 elf_s390_plt_pic12_entry,
3495 PLT_ENTRY_SIZE);
3496
3497 /* Put in the GOT offset as displacement value. The 0xc000
3498 value comes from the first word of the plt entry. Look
3499 at the elf_s390_plt_pic16_entry content. */
3500 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3501 plt->contents + iplt_offset + 2);
3502
3503 /* Adjust the jump to the first plt entry. */
3504 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3505 plt->contents + iplt_offset + 20);
3506 }
3507 else if (got_offset < 32768)
3508 {
3509 /* The GOT offset is too big for a displacement but small
3510 enough to be a signed 16 bit immediate value as it can be
3511 used in an lhi instruction. */
3512 memcpy (plt->contents + iplt_offset,
3513 elf_s390_plt_pic16_entry,
3514 PLT_ENTRY_SIZE);
3515
3516 /* Put in the GOT offset for the lhi instruction. */
3517 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3518 plt->contents + iplt_offset + 2);
3519
3520 /* Adjust the jump to the first plt entry. */
3521 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3522 plt->contents + iplt_offset + 20);
3523 }
3524 else
3525 {
3526 memcpy (plt->contents + iplt_offset,
3527 elf_s390_plt_pic_entry,
3528 PLT_ENTRY_SIZE);
3529
3530 /* Adjust the jump to the first plt entry. */
3531 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3532 plt->contents + iplt_offset + 20);
3533
3534 /* Push the GOT offset field. */
3535 bfd_put_32 (output_bfd, got_offset,
3536 plt->contents + iplt_offset + 24);
3537 }
3538 /* Insert offset into reloc. table here. */
3539 bfd_put_32 (output_bfd, relplt->output_offset +
3540 iplt_index * RELA_ENTRY_SIZE,
3541 plt->contents + iplt_offset + 28);
3542
3543 /* Fill in the entry in the global offset table.
3544 Points to instruction after GOT offset. */
3545 bfd_put_32 (output_bfd,
3546 (plt->output_section->vma
3547 + plt->output_offset
3548 + iplt_offset
3549 + 12),
3550 gotplt->contents + igotiplt_offset);
3551
3552 /* Fill in the entry in the .rela.plt section. */
3553 rela.r_offset = gotplt->output_section->vma + got_offset;
3554
3555 if (!h
3556 || h->dynindx == -1
0e1862bb 3557 || ((bfd_link_executable (info)
470b557a
AK		 3558 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3559 && h->def_regular))
3560 {
3561 /* The symbol can be locally resolved. */
3562 rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
3563 rela.r_addend = resolver_address;
3564 }
3565 else
3566 {
3567 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3568 rela.r_addend = 0;
3569 }
3570
3571 loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE;
3572 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3573}
3574
a85d7ed0
NC		 3575/* Finish up dynamic symbol handling. We set the contents of various
3576 dynamic sections here. */
3577
b34976b6 3578static bfd_boolean
2c3fc389
NC		 3579elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3580 struct bfd_link_info *info,
3581 struct elf_link_hash_entry *h,
3582 Elf_Internal_Sym *sym)
a85d7ed0 3583{
0451c93c 3584 struct elf_s390_link_hash_table *htab;
470b557a 3585 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
ec338859 3586
0451c93c 3587 htab = elf_s390_hash_table (info);
ec338859 3588
a85d7ed0
NC		 3589 if (h->plt.offset != (bfd_vma) -1)
3590 {
0451c93c
MS		 3591 bfd_vma plt_index;
3592 bfd_vma got_offset;
a85d7ed0 3593 Elf_Internal_Rela rela;
947216bf 3594 bfd_byte *loc;
a85d7ed0 3595 bfd_vma relative_offset;
ec338859 3596
a85d7ed0 3597 /* This symbol has an entry in the procedure linkage table. Set
26e41594 3598 it up. */
0a511368 3599 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
0451c93c 3600 {
0a511368
AK		 3601 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3602 htab, h->plt.offset,
3603 eh->ifunc_resolver_address +
3604 eh->ifunc_resolver_section->output_offset +
3605 eh->ifunc_resolver_section->output_section->vma);
3606 /* Do not return yet. Handling of explicit GOT slots of
3607 IFUNC symbols is below. */
0451c93c 3608 }
a85d7ed0 3609 else
0451c93c 3610 {
470b557a
AK		 3611 if (h->dynindx == -1
3612 || htab->elf.splt == NULL
3613 || htab->elf.sgotplt == NULL
3614 || htab->elf.srelplt == NULL)
3615 abort ();
9aa17453 3616
470b557a
AK		 3617 /* Calc. index no.
3618 Current offset - size first entry / entry size. */
3619 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9aa17453 3620
470b557a
AK		 3621 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3622 addr & GOT addr. */
3623 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3624
470b557a
AK		 3625 /* S390 uses halfwords for relative branch calc! */
3626 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3627 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3628 /* If offset is > 32768, branch to a previous branch
3629 390 can only handle +-64 K jumps. */
3630 if ( -32768 > (int) relative_offset )
3631 relative_offset
3632 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
ec338859 3633
470b557a 3634 /* Fill in the entry in the procedure linkage table. */
0e1862bb 3635 if (!bfd_link_pic (info))
470b557a
AK		 3636 {
3637 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry,
3638 PLT_ENTRY_SIZE);
3639
3640 /* Adjust jump to the first plt entry. */
3641 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3642 htab->elf.splt->contents + h->plt.offset + 20);
3643
3644 /* Push the GOT offset field. */
3645 bfd_put_32 (output_bfd,
3646 (htab->elf.sgotplt->output_section->vma
3647 + htab->elf.sgotplt->output_offset
3648 + got_offset),
3649 htab->elf.splt->contents + h->plt.offset + 24);
3650 }
3651 else if (got_offset < 4096)
3652 {
3653 /* The GOT offset is small enough to be used directly as
3654 displacement. */
3655 memcpy (htab->elf.splt->contents + h->plt.offset,
3656 elf_s390_plt_pic12_entry,
3657 PLT_ENTRY_SIZE);
3658
3659 /* Put in the GOT offset as displacement value. The 0xc000
3660 value comes from the first word of the plt entry. Look
3b67f094 3661 at the elf_s390_plt_pic12_entry content. */
470b557a
AK		 3662 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3663 htab->elf.splt->contents + h->plt.offset + 2);
3664
3665 /* Adjust the jump to the first plt entry. */
3666 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3667 htab->elf.splt->contents + h->plt.offset + 20);
3668 }
3669 else if (got_offset < 32768)
3670 {
3671 /* The GOT offset is too big for a displacement but small
3672 enough to be a signed 16 bit immediate value as it can be
3673 used in an lhi instruction. */
3674 memcpy (htab->elf.splt->contents + h->plt.offset,
3675 elf_s390_plt_pic16_entry,
3676 PLT_ENTRY_SIZE);
3677
3678 /* Put in the GOT offset for the lhi instruction. */
3679 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3680 htab->elf.splt->contents + h->plt.offset + 2);
3681
3682 /* Adjust the jump to the first plt entry. */
3683 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3684 htab->elf.splt->contents + h->plt.offset + 20);
3685 }
3686 else
3687 {
3688 memcpy (htab->elf.splt->contents + h->plt.offset,
3689 elf_s390_plt_pic_entry,
3690 PLT_ENTRY_SIZE);
3691
3692 /* Adjust the jump to the first plt entry. */
3693 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3694 htab->elf.splt->contents + h->plt.offset + 20);
3695
3696 /* Push the GOT offset field. */
3697 bfd_put_32 (output_bfd, got_offset,
3698 htab->elf.splt->contents + h->plt.offset + 24);
3699 }
3700 /* Insert offset into reloc. table here. */
3701 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3702 htab->elf.splt->contents + h->plt.offset + 28);
3703
3704 /* Fill in the entry in the global offset table.
3705 Points to instruction after GOT offset. */
3706 bfd_put_32 (output_bfd,
3707 (htab->elf.splt->output_section->vma
3708 + htab->elf.splt->output_offset
3709 + h->plt.offset
3710 + 12),
3711 htab->elf.sgotplt->contents + got_offset);
3712
3713 /* Fill in the entry in the .rela.plt section. */
3714 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3715 + htab->elf.sgotplt->output_offset
3716 + got_offset);
3717 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3718 rela.r_addend = 0;
3719 loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3720 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3721
3722 if (!h->def_regular)
3723 {
3724 /* Mark the symbol as undefined, rather than as defined in
3725 the .plt section. Leave the value alone. This is a clue
3726 for the dynamic linker, to make function pointer
3727 comparisons work between an application and shared
3728 library. */
3729 sym->st_shndx = SHN_UNDEF;
3730 }
a85d7ed0
NC		 3731 }
3732 }
ec338859 3733
69fc87f1
MS		 3734 if (h->got.offset != (bfd_vma) -1
3735 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3736 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3737 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3738 {
a85d7ed0 3739 Elf_Internal_Rela rela;
947216bf 3740 bfd_byte *loc;
a85d7ed0
NC		 3741
3742 /* This symbol has an entry in the global offset table. Set it
26e41594 3743 up. */
a85d7ed0 3744
f41345a7 3745 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3746 abort ();
a85d7ed0 3747
f41345a7
AK		 3748 rela.r_offset = (htab->elf.sgot->output_section->vma
3749 + htab->elf.sgot->output_offset
dc810e39 3750 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0
NC		 3751
3752 /* If this is a static link, or it is a -Bsymbolic link and the
3753 symbol is defined locally or was forced to be local because
3754 of a version file, we just want to emit a RELATIVE reloc.
3755 The entry in the global offset table will already have been
3756 initialized in the relocate_section function. */
470b557a
AK		 3757 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3758 {
0e1862bb 3759 if (bfd_link_pic (info))
470b557a
AK		 3760 {
3761 /* An explicit GOT slot usage needs GLOB_DAT. If the
3762 symbol references local the implicit got.iplt slot
3763 will be used and the IRELATIVE reloc has been created
3764 above. */
3765 goto do_glob_dat;
3766 }
3767 else
3768 {
3769 /* For non-shared objects explicit GOT slots must be
3770 filled with the PLT slot address for pointer
3771 equality reasons. */
3772 bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma
3773 + htab->elf.iplt->output_offset
3774 + h->plt.offset),
3775 htab->elf.sgot->contents + h->got.offset);
3776 return TRUE;
3777 }
3778 }
0e1862bb 3779 else if (bfd_link_pic (info)
ceada896 3780 && SYMBOL_REFERENCES_LOCAL (info, h))
0451c93c 3781 {
470b557a
AK		 3782 /* If this is a static link, or it is a -Bsymbolic link and
3783 the symbol is defined locally or was forced to be local
3784 because of a version file, we just want to emit a
3785 RELATIVE reloc. The entry in the global offset table
3786 will already have been initialized in the
3787 relocate_section function. */
8c21ca21
AK		 3788 if (!h->def_regular)
3789 return FALSE;
0451c93c
MS		 3790 BFD_ASSERT((h->got.offset & 1) != 0);
3791 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3792 rela.r_addend = (h->root.u.def.value
26e41594
AM		 3793 + h->root.u.def.section->output_section->vma
3794 + h->root.u.def.section->output_offset);
3795 }
a85d7ed0
NC		 3796 else
3797 {
3798 BFD_ASSERT((h->got.offset & 1) == 0);
470b557a 3799 do_glob_dat:
f41345a7 3800 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3801 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
26e41594
AM		 3802 rela.r_addend = 0;
3803 }
a85d7ed0 3804
f41345a7
AK		 3805 loc = htab->elf.srelgot->contents;
3806 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3807 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3808 }
3809
f5385ebf 3810 if (h->needs_copy)
a85d7ed0 3811 {
a85d7ed0 3812 Elf_Internal_Rela rela;
5474d94f 3813 asection *s;
947216bf 3814 bfd_byte *loc;
a85d7ed0
NC		 3815
3816 /* This symbols needs a copy reloc. Set it up. */
3817
0451c93c
MS		 3818 if (h->dynindx == -1
3819 || (h->root.type != bfd_link_hash_defined
3820 && h->root.type != bfd_link_hash_defweak)
5474d94f
AM		 3821 || htab->elf.srelbss == NULL
3822 || htab->elf.sreldynrelro == NULL)
0451c93c 3823 abort ();
a85d7ed0
NC		 3824
3825 rela.r_offset = (h->root.u.def.value
3826 + h->root.u.def.section->output_section->vma
3827 + h->root.u.def.section->output_offset);
3828 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3829 rela.r_addend = 0;
5474d94f
AM		 3830 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
3831 s = htab->elf.sreldynrelro;
3832 else
3833 s = htab->elf.srelbss;
3834 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3835 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3836 }
3837
3838 /* Mark some specially defined symbols as absolute. */
9637f6ef 3839 if (h == htab->elf.hdynamic
22edb2f1
RS		 3840 || h == htab->elf.hgot
3841 || h == htab->elf.hplt)
a85d7ed0
NC		 3842 sym->st_shndx = SHN_ABS;
3843
b34976b6 3844 return TRUE;
a85d7ed0
NC		 3845}
3846
0451c93c
MS		 3847/* Used to decide how to sort relocs in an optimal manner for the
3848 dynamic linker, before writing them out. */
3849
3850static enum elf_reloc_type_class
7e612e98
AM		 3851elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3852 const asection *rel_sec ATTRIBUTE_UNUSED,
3853 const Elf_Internal_Rela *rela)
0451c93c 3854{
0f042c67
AK		 3855 bfd *abfd = info->output_bfd;
3856 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3857 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3858 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
3859 Elf_Internal_Sym sym;
3860
3861 if (htab->elf.dynsym == NULL
3862 || !bed->s->swap_symbol_in (abfd,
3863 (htab->elf.dynsym->contents
3864 + r_symndx * bed->s->sizeof_sym),
3865 0, &sym))
3866 abort ();
3867
3868 /* Check relocation against STT_GNU_IFUNC symbol. */
3869 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3870 return reloc_class_ifunc;
3871
0451c93c
MS		 3872 switch ((int) ELF32_R_TYPE (rela->r_info))
3873 {
3874 case R_390_RELATIVE:
3875 return reloc_class_relative;
3876 case R_390_JMP_SLOT:
3877 return reloc_class_plt;
3878 case R_390_COPY:
3879 return reloc_class_copy;
3880 default:
3881 return reloc_class_normal;
3882 }
3883}
3884
a85d7ed0
NC		 3885/* Finish up the dynamic sections. */
3886
b34976b6 3887static bfd_boolean
2c3fc389
NC		 3888elf_s390_finish_dynamic_sections (bfd *output_bfd,
3889 struct bfd_link_info *info)
a85d7ed0 3890{
0451c93c 3891 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3892 bfd *dynobj;
3893 asection *sdyn;
470b557a
AK		 3894 bfd *ibfd;
3895 unsigned int i;
a85d7ed0 3896
0451c93c
MS		 3897 htab = elf_s390_hash_table (info);
3898 dynobj = htab->elf.dynobj;
3d4d4302 3899 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3900
0451c93c 3901 if (htab->elf.dynamic_sections_created)
a85d7ed0 3902 {
a85d7ed0
NC		 3903 Elf32_External_Dyn *dyncon, *dynconend;
3904
f41345a7 3905 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3906 abort ();
a85d7ed0
NC		 3907
3908 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 3909 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3910 for (; dyncon < dynconend; dyncon++)
3911 {
3912 Elf_Internal_Dyn dyn;
a85d7ed0 3913 asection *s;
ec338859 3914
a85d7ed0 3915 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3916
a85d7ed0
NC		 3917 switch (dyn.d_tag)
3918 {
3919 default:
0451c93c 3920 continue;
ec338859 3921
a85d7ed0 3922 case DT_PLTGOT:
4ade44b7
AM		 3923 s = htab->elf.sgotplt;
3924 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
0451c93c 3925 break;
ec338859 3926
a85d7ed0 3927 case DT_JMPREL:
4ade44b7
AM		 3928 s = htab->elf.srelplt;
3929 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a85d7ed0
NC		 3930 break;
3931
3932 case DT_PLTRELSZ:
f92339b8 3933 dyn.d_un.d_val = htab->elf.srelplt->size + htab->elf.irelplt->size;
a85d7ed0
NC		 3934 break;
3935 }
0451c93c
MS		 3936
3937 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3938 }
3939
3940 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3941 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0 3942 {
f41345a7 3943 memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
0e1862bb 3944 if (bfd_link_pic (info))
0451c93c 3945 {
f41345a7 3946 memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry,
9aa17453
AK		 3947 PLT_FIRST_ENTRY_SIZE);
3948 }
26e41594 3949 else
9aa17453 3950 {
f41345a7 3951 memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry,
9aa17453 3952 PLT_FIRST_ENTRY_SIZE);
26e41594 3953 bfd_put_32 (output_bfd,
f41345a7
AK		 3954 htab->elf.sgotplt->output_section->vma
3955 + htab->elf.sgotplt->output_offset,
3956 htab->elf.splt->contents + 24);
ceada896 3957 }
f41345a7 3958 elf_section_data (htab->elf.splt->output_section)
0451c93c 3959 ->this_hdr.sh_entsize = 4;
a85d7ed0
NC		 3960 }
3961
3962 }
3963
f41345a7 3964 if (htab->elf.sgotplt)
a85d7ed0 3965 {
0451c93c 3966 /* Fill in the first three entries in the global offset table. */
f41345a7 3967 if (htab->elf.sgotplt->size > 0)
0451c93c
MS		 3968 {
3969 bfd_put_32 (output_bfd,
3970 (sdyn == NULL ? (bfd_vma) 0
3971 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3972 htab->elf.sgotplt->contents);
0451c93c 3973 /* One entry for shared object struct ptr. */
f41345a7 3974 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4);
0451c93c 3975 /* One entry for _dl_runtime_resolve. */
f41345a7 3976 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3977 }
a85d7ed0 3978
f41345a7 3979 elf_section_data (htab->elf.sgotplt->output_section)
0451c93c
MS		 3980 ->this_hdr.sh_entsize = 4;
3981 }
470b557a 3982 /* Finish dynamic symbol for local IFUNC symbols. */
c72f2fb2 3983 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
470b557a
AK		 3984 {
3985 struct plt_entry *local_plt;
3986 Elf_Internal_Sym *isym;
3987 Elf_Internal_Shdr *symtab_hdr;
3988
3989 symtab_hdr = &elf_symtab_hdr (ibfd);
3990
3991 local_plt = elf_s390_local_plt (ibfd);
3992 if (local_plt != NULL)
3993 for (i = 0; i < symtab_hdr->sh_info; i++)
3994 {
3995 if (local_plt[i].plt.offset != (bfd_vma) -1)
3996 {
3997 asection *sec = local_plt[i].sec;
3998 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3999 if (isym == NULL)
4000 return FALSE;
4001
4002 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4003 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
4004 local_plt[i].plt.offset,
4005 isym->st_value
4006 + sec->output_section->vma
4007 + sec->output_offset);
4008
4009 }
4010 }
4011 }
b34976b6 4012 return TRUE;
a85d7ed0 4013}
e3e9290d
AA		 4014\f
4015/* Support for core dump NOTE sections. */
a85d7ed0 4016
b34976b6 4017static bfd_boolean
2c3fc389 4018elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note)
979f4a38
NC		 4019{
4020 int offset;
eea6121a 4021 unsigned int size;
979f4a38
NC		 4022
4023 switch (note->descsz)
4024 {
ceada896
AA		 4025 default:
4026 return FALSE;
979f4a38 4027
ceada896
AA		 4028 case 224: /* S/390 Linux. */
4029 /* pr_cursig */
4030 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
979f4a38 4031
ceada896
AA		 4032 /* pr_pid */
4033 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
979f4a38 4034
ceada896
AA		 4035 /* pr_reg */
4036 offset = 72;
4037 size = 144;
4038 break;
979f4a38
NC		 4039 }
4040
4041 /* Make a ".reg/999" section. */
4042 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 4043 size, note->descpos + offset);
979f4a38
NC		 4044}
4045
e3e9290d
AA		 4046static bfd_boolean
4047elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
4048{
4049 switch (note->descsz)
4050 {
4051 default:
4052 return FALSE;
4053
4054 case 124: /* sizeof(struct elf_prpsinfo) on s390 */
4055 elf_tdata (abfd)->core->pid
4056 = bfd_get_32 (abfd, note->descdata + 12);
4057 elf_tdata (abfd)->core->program
4058 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
4059 elf_tdata (abfd)->core->command
4060 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
4061 break;
4062 }
4063
4064 /* Note that for some reason, a spurious space is tacked
4065 onto the end of the args in some (at least one anyway)
4066 implementations, so strip it off if it exists. */
4067
4068 {
4069 char *command = elf_tdata (abfd)->core->command;
4070 int n = strlen (command);
4071
4072 if (0 < n && command[n - 1] == ' ')
4073 command[n - 1] = '\0';
4074 }
4075
4076 return TRUE;
4077}
4078
4079static char *
4080elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
4081 int note_type, ...)
4082{
4083 va_list ap;
4084
4085 switch (note_type)
4086 {
4087 default:
4088 return NULL;
4089
4090 case NT_PRPSINFO:
4091 {
4092 char data[124] = { 0 };
4093 const char *fname, *psargs;
4094
4095 va_start (ap, note_type);
4096 fname = va_arg (ap, const char *);
4097 psargs = va_arg (ap, const char *);
4098 va_end (ap);
4099
4100 strncpy (data + 28, fname, 16);
4101 strncpy (data + 44, psargs, 80);
4102 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
4103 &data, sizeof (data));
4104 }
4105
4106 case NT_PRSTATUS:
4107 {
4108 char data[224] = { 0 };
4109 long pid;
4110 int cursig;
4111 const void *gregs;
4112
4113 va_start (ap, note_type);
4114 pid = va_arg (ap, long);
4115 cursig = va_arg (ap, int);
4116 gregs = va_arg (ap, const void *);
4117 va_end (ap);
4118
4119 bfd_put_16 (abfd, cursig, data + 12);
4120 bfd_put_32 (abfd, pid, data + 24);
4121 memcpy (data + 72, gregs, 144);
4122 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
4123 &data, sizeof (data));
4124 }
4125 }
4126 /* NOTREACHED */
4127}
4128\f
4c45e5c9
JJ		 4129/* Return address for Ith PLT stub in section PLT, for relocation REL
4130 or (bfd_vma) -1 if it should not be included. */
4131
4132static bfd_vma
4133elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
4134 const arelent *rel ATTRIBUTE_UNUSED)
4135{
4136 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
4137}
4138
643f7afb
AK		 4139/* Merge backend specific data from an object file to the output
4140 object file when linking. */
4141
55786da2 4142static bfd_boolean
50e03d47 4143elf32_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
55786da2 4144{
50e03d47
AM		 4145 bfd *obfd = info->output_bfd;
4146
643f7afb
AK		 4147 if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
4148 return TRUE;
4149
50e03d47 4150 if (!elf_s390_merge_obj_attributes (ibfd, info))
643f7afb
AK		 4151 return FALSE;
4152
55786da2
AK		 4153 elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
4154 return TRUE;
4155}
4156
4c45e5c9 4157
6d00b590 4158#define TARGET_BIG_SYM s390_elf32_vec
a85d7ed0
NC		 4159#define TARGET_BIG_NAME "elf32-s390"
4160#define ELF_ARCH bfd_arch_s390
ae95ffa6 4161#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 4162#define ELF_MACHINE_CODE EM_S390
4163#define ELF_MACHINE_ALT1 EM_S390_OLD
4164#define ELF_MAXPAGESIZE 0x1000
4165
4166#define elf_backend_can_gc_sections 1
51b64d56 4167#define elf_backend_can_refcount 1
a85d7ed0
NC		 4168#define elf_backend_want_got_plt 1
4169#define elf_backend_plt_readonly 1
4170#define elf_backend_want_plt_sym 0
4171#define elf_backend_got_header_size 12
5474d94f 4172#define elf_backend_want_dynrelro 1
b491616a 4173#define elf_backend_rela_normal 1
a85d7ed0 4174
26e41594 4175#define elf_info_to_howto elf_s390_info_to_howto
a85d7ed0 4176
a85d7ed0
NC		 4177#define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
4178#define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
4179#define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
157090f7 4180#define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
a85d7ed0 4181
55786da2
AK		 4182#define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
4183
a85d7ed0 4184#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
26e41594 4185#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c 4186#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
9d19e4fd 4187#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
a85d7ed0
NC		 4188#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4189#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
26e41594
AM		 4190#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
4191#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
0451c93c 4192#define elf_backend_reloc_type_class elf_s390_reloc_type_class
26e41594 4193#define elf_backend_relocate_section elf_s390_relocate_section
a85d7ed0 4194#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 4195#define elf_backend_init_index_section _bfd_elf_init_1_index_section
979f4a38 4196#define elf_backend_grok_prstatus elf_s390_grok_prstatus
e3e9290d
AA		 4197#define elf_backend_grok_psinfo elf_s390_grok_psinfo
4198#define elf_backend_write_core_note elf_s390_write_core_note
4c45e5c9 4199#define elf_backend_plt_sym_val elf_s390_plt_sym_val
470b557a 4200#define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
b9005ba7 4201#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
a85d7ed0 4202
69fc87f1 4203#define bfd_elf32_mkobject elf_s390_mkobject
26e41594 4204#define elf_backend_object_p elf_s390_object_p
a85d7ed0
NC		 4205
4206#include "elf32-target.h"
GDB Binutils - Deliverables
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