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[deliverable/binutils-gdb.git] / bfd / elf32-s390.c
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a85d7ed0 1/* IBM S/390-specific support for 32-bit ELF
6f2750fe 2 Copyright (C) 2000-2016 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. */
876 dir->ref_dynamic |= ind->ref_dynamic;
877 dir->ref_regular |= ind->ref_regular;
878 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
879 dir->needs_plt |= ind->needs_plt;
880 }
64285810 881 else
fcfa13d2 882 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 883}
a85d7ed0 884
69fc87f1 885static int
2c3fc389
NC		 886elf_s390_tls_transition (struct bfd_link_info *info,
887 int r_type,
888 int is_local)
69fc87f1 889{
0e1862bb 890 if (bfd_link_pic (info))
69fc87f1
MS		 891 return r_type;
892
893 switch (r_type)
894 {
895 case R_390_TLS_GD32:
896 case R_390_TLS_IE32:
897 if (is_local)
898 return R_390_TLS_LE32;
899 return R_390_TLS_IE32;
900 case R_390_TLS_GOTIE32:
901 if (is_local)
902 return R_390_TLS_LE32;
903 return R_390_TLS_GOTIE32;
904 case R_390_TLS_LDM32:
905 return R_390_TLS_LE32;
906 }
907
908 return r_type;
909}
910
a85d7ed0
NC		 911/* Look through the relocs for a section during the first phase, and
912 allocate space in the global offset table or procedure linkage
913 table. */
914
b34976b6 915static bfd_boolean
2c3fc389
NC		 916elf_s390_check_relocs (bfd *abfd,
917 struct bfd_link_info *info,
918 asection *sec,
919 const Elf_Internal_Rela *relocs)
a85d7ed0 920{
0451c93c 921 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 922 Elf_Internal_Shdr *symtab_hdr;
923 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 924 const Elf_Internal_Rela *rel;
925 const Elf_Internal_Rela *rel_end;
a85d7ed0 926 asection *sreloc;
5236c819 927 bfd_signed_vma *local_got_refcounts;
69fc87f1 928 int tls_type, old_tls_type;
470b557a 929 Elf_Internal_Sym *isym;
a85d7ed0 930
0e1862bb 931 if (bfd_link_relocatable (info))
b34976b6 932 return TRUE;
a85d7ed0 933
0ffa91dd
NC		 934 BFD_ASSERT (is_s390_elf (abfd));
935
0451c93c 936 htab = elf_s390_hash_table (info);
0ffa91dd 937 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 938 sym_hashes = elf_sym_hashes (abfd);
5236c819 939 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 940
a85d7ed0
NC		 941 sreloc = NULL;
942
943 rel_end = relocs + sec->reloc_count;
944 for (rel = relocs; rel < rel_end; rel++)
945 {
69fc87f1 946 unsigned int r_type;
a85d7ed0
NC		 947 unsigned long r_symndx;
948 struct elf_link_hash_entry *h;
949
950 r_symndx = ELF32_R_SYM (rel->r_info);
951
0451c93c
MS		 952 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
953 {
695344c0 954 /* xgettext:c-format */
4eca0228
AM		 955 _bfd_error_handler (_("%B: bad symbol index: %d"),
956 abfd, r_symndx);
b34976b6 957 return FALSE;
0451c93c
MS		 958 }
959
a85d7ed0 960 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK		 961 {
962 /* A local symbol. */
963 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
964 abfd, r_symndx);
965 if (isym == NULL)
966 return FALSE;
967
968 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
969 {
970 struct plt_entry *plt;
971
0cb79d69
AK		 972 if (htab->elf.dynobj == NULL)
973 htab->elf.dynobj = abfd;
974
470b557a
AK		 975 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
976 return FALSE;
977
978 if (local_got_refcounts == NULL)
979 {
980 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
981 return FALSE;
982 local_got_refcounts = elf_local_got_refcounts (abfd);
983 }
984 plt = elf_s390_local_plt (abfd);
985 plt[r_symndx].plt.refcount++;
986 }
987 h = NULL;
988 }
a85d7ed0 989 else
973a3492
L		 990 {
991 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
992 while (h->root.type == bfd_link_hash_indirect
993 || h->root.type == bfd_link_hash_warning)
994 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM		 995
996 /* PR15323, ref flags aren't set for references in the same
997 object. */
998 h->root.non_ir_ref = 1;
973a3492 999 }
a85d7ed0 1000
5236c819
MS		 1001 /* Create got section and local_got_refcounts array if they
1002 are needed. */
69fc87f1
MS		 1003 r_type = elf_s390_tls_transition (info,
1004 ELF32_R_TYPE (rel->r_info),
1005 h == NULL);
1006 switch (r_type)
a85d7ed0
NC		 1007 {
1008 case R_390_GOT12:
5236c819 1009 case R_390_GOT16:
bd1ea41b 1010 case R_390_GOT20:
a85d7ed0 1011 case R_390_GOT32:
befc3abb 1012 case R_390_GOTENT:
5236c819
MS		 1013 case R_390_GOTPLT12:
1014 case R_390_GOTPLT16:
bd1ea41b 1015 case R_390_GOTPLT20:
5236c819
MS		 1016 case R_390_GOTPLT32:
1017 case R_390_GOTPLTENT:
69fc87f1
MS		 1018 case R_390_TLS_GD32:
1019 case R_390_TLS_GOTIE12:
bd1ea41b 1020 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1021 case R_390_TLS_GOTIE32:
1022 case R_390_TLS_IEENT:
1023 case R_390_TLS_IE32:
1024 case R_390_TLS_LDM32:
5236c819
MS		 1025 if (h == NULL
1026 && local_got_refcounts == NULL)
a85d7ed0 1027 {
470b557a 1028 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 1029 return FALSE;
470b557a 1030 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 1031 }
5236c819
MS		 1032 /* Fall through. */
1033 case R_390_GOTOFF16:
1034 case R_390_GOTOFF32:
0451c93c 1035 case R_390_GOTPC:
befc3abb 1036 case R_390_GOTPCDBL:
f41345a7 1037 if (htab->elf.sgot == NULL)
0451c93c
MS		 1038 {
1039 if (htab->elf.dynobj == NULL)
1040 htab->elf.dynobj = abfd;
ce558b89 1041 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
b34976b6 1042 return FALSE;
0451c93c 1043 }
5236c819
MS		 1044 }
1045
470b557a
AK		 1046 if (h != NULL)
1047 {
1048 if (htab->elf.dynobj == NULL)
1049 htab->elf.dynobj = abfd;
1050 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1051 return FALSE;
1052
1053 /* Make sure an IFUNC symbol defined in a non-shared object
1054 always gets a PLT slot. */
1055 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1056 {
1057 /* The symbol is called by the dynamic loader in order
1058 to resolve the relocation. So it is in fact also
1059 referenced. */
1060 h->ref_regular = 1;
1061 h->needs_plt = 1;
1062 }
1063 }
69fc87f1 1064 switch (r_type)
5236c819 1065 {
5236c819
MS		 1066 case R_390_GOTPC:
1067 case R_390_GOTPCDBL:
470b557a
AK		 1068 /* These relocs do not need a GOT slot. They just load the
1069 GOT pointer itself or address something else relative to
1070 the GOT. Since the GOT pointer has been set up above we
1071 are done. */
a85d7ed0 1072 break;
01a53584
AK		 1073 case R_390_GOTOFF16:
1074 case R_390_GOTOFF32:
1075 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
1076 break;
1a0670f3 1077 /* Fall through. */
a85d7ed0 1078
fb798c50 1079 case R_390_PLT12DBL:
26e41594 1080 case R_390_PLT16DBL:
fb798c50 1081 case R_390_PLT24DBL:
26e41594 1082 case R_390_PLT32DBL:
a85d7ed0 1083 case R_390_PLT32:
5236c819
MS		 1084 case R_390_PLTOFF16:
1085 case R_390_PLTOFF32:
a85d7ed0 1086 /* This symbol requires a procedure linkage table entry. We
26e41594
AM		 1087 actually build the entry in adjust_dynamic_symbol,
1088 because this might be a case of linking PIC code which is
1089 never referenced by a dynamic object, in which case we
1090 don't need to generate a procedure linkage table entry
1091 after all. */
a85d7ed0
NC		 1092
1093 /* If this is a local symbol, we resolve it directly without
26e41594 1094 creating a procedure linkage table entry. */
5236c819
MS		 1095 if (h != NULL)
1096 {
f5385ebf 1097 h->needs_plt = 1;
5236c819
MS		 1098 h->plt.refcount += 1;
1099 }
1100 break;
a85d7ed0 1101
5236c819
MS		 1102 case R_390_GOTPLT12:
1103 case R_390_GOTPLT16:
bd1ea41b 1104 case R_390_GOTPLT20:
5236c819
MS		 1105 case R_390_GOTPLT32:
1106 case R_390_GOTPLTENT:
1107 /* This symbol requires either a procedure linkage table entry
1108 or an entry in the local got. We actually build the entry
1109 in adjust_dynamic_symbol because whether this is really a
1110 global reference can change and with it the fact if we have
1111 to create a plt entry or a local got entry. To be able to
1112 make a once global symbol a local one we have to keep track
1113 of the number of gotplt references that exist for this
1114 symbol. */
1115 if (h != NULL)
1116 {
1117 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1118 h->needs_plt = 1;
5236c819
MS		 1119 h->plt.refcount += 1;
1120 }
1121 else
1122 local_got_refcounts[r_symndx] += 1;
a85d7ed0
NC		 1123 break;
1124
69fc87f1
MS		 1125 case R_390_TLS_LDM32:
1126 htab->tls_ldm_got.refcount += 1;
1127 break;
1128
1129 case R_390_TLS_IE32:
1130 case R_390_TLS_GOTIE12:
bd1ea41b 1131 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1132 case R_390_TLS_GOTIE32:
1133 case R_390_TLS_IEENT:
0e1862bb 1134 if (bfd_link_pic (info))
69fc87f1 1135 info->flags |= DF_STATIC_TLS;
ae9a127f 1136 /* Fall through. */
69fc87f1
MS		 1137
1138 case R_390_GOT12:
26e41594 1139 case R_390_GOT16:
bd1ea41b 1140 case R_390_GOT20:
69fc87f1
MS		 1141 case R_390_GOT32:
1142 case R_390_GOTENT:
1143 case R_390_TLS_GD32:
1144 /* This symbol requires a global offset table entry. */
1145 switch (r_type)
1146 {
1147 default:
1148 case R_390_GOT12:
1149 case R_390_GOT16:
bd1ea41b 1150 case R_390_GOT20:
69fc87f1
MS		 1151 case R_390_GOT32:
1152 case R_390_GOTENT:
1153 tls_type = GOT_NORMAL;
1154 break;
1155 case R_390_TLS_GD32:
1156 tls_type = GOT_TLS_GD;
1157 break;
1158 case R_390_TLS_IE32:
1159 case R_390_TLS_GOTIE32:
1160 tls_type = GOT_TLS_IE;
1161 break;
1162 case R_390_TLS_GOTIE12:
bd1ea41b 1163 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1164 case R_390_TLS_IEENT:
1165 tls_type = GOT_TLS_IE_NLT;
1166 break;
1167 }
1168
1169 if (h != NULL)
1170 {
1171 h->got.refcount += 1;
1172 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1173 }
1174 else
1175 {
1176 local_got_refcounts[r_symndx] += 1;
1177 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1178 }
1179 /* If a TLS symbol is accessed using IE at least once,
1180 there is no point to use dynamic model for it. */
1181 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1182 {
1183 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1184 {
4eca0228 1185 _bfd_error_handler
695344c0 1186 /* xgettext:c-format */
d003868e
AM		 1187 (_("%B: `%s' accessed both as normal and thread local symbol"),
1188 abfd, h->root.root.string);
69fc87f1
MS		 1189 return FALSE;
1190 }
1191 if (old_tls_type > tls_type)
1192 tls_type = old_tls_type;
1193 }
1194
1195 if (old_tls_type != tls_type)
1196 {
1197 if (h != NULL)
1198 elf_s390_hash_entry (h)->tls_type = tls_type;
1199 else
1200 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1201 }
1202
1203 if (r_type != R_390_TLS_IE32)
1204 break;
ae9a127f 1205 /* Fall through. */
69fc87f1
MS		 1206
1207 case R_390_TLS_LE32:
e00d879a
AK		 1208 /* For static linking and executables this reloc will be
1209 calculated at linktime otherwise a TLS_TPOFF runtime
1210 reloc will be generated. */
0e1862bb 1211 if (r_type == R_390_TLS_LE32 && bfd_link_pie (info))
e00d879a
AK		 1212 break;
1213
0e1862bb 1214 if (!bfd_link_pic (info))
69fc87f1
MS		 1215 break;
1216 info->flags |= DF_STATIC_TLS;
ae9a127f 1217 /* Fall through. */
69fc87f1 1218
26e41594
AM		 1219 case R_390_8:
1220 case R_390_16:
a85d7ed0 1221 case R_390_32:
26e41594 1222 case R_390_PC16:
fb798c50 1223 case R_390_PC12DBL:
26e41594 1224 case R_390_PC16DBL:
fb798c50 1225 case R_390_PC24DBL:
befc3abb 1226 case R_390_PC32DBL:
a85d7ed0 1227 case R_390_PC32:
99ba5125 1228 if (h != NULL && bfd_link_executable (info))
0451c93c
MS		 1229 {
1230 /* If this reloc is in a read-only section, we might
1231 need a copy reloc. We can't check reliably at this
1232 stage whether the section is read-only, as input
1233 sections have not yet been mapped to output sections.
1234 Tentatively set the flag for now, and correct in
1235 adjust_dynamic_symbol. */
f5385ebf 1236 h->non_got_ref = 1;
ec338859 1237
0e1862bb 1238 if (!bfd_link_pic (info))
470b557a
AK		 1239 {
1240 /* We may need a .plt entry if the function this reloc
1241 refers to is in a shared lib. */
1242 h->plt.refcount += 1;
1243 }
0451c93c 1244 }
a85d7ed0
NC		 1245
1246 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1247 against a global symbol, or a non PC relative reloc
1248 against a local symbol, then we need to copy the reloc
1249 into the shared library. However, if we are linking with
1250 -Bsymbolic, we do not need to copy a reloc against a
1251 global symbol which is defined in an object we are
1252 including in the link (i.e., DEF_REGULAR is set). At
1253 this point we have not seen all the input files, so it is
1254 possible that DEF_REGULAR is not set now but will be set
1255 later (it is never cleared). In case of a weak definition,
1256 DEF_REGULAR may be cleared later by a strong definition in
1257 a shared library. We account for that possibility below by
1258 storing information in the relocs_copied field of the hash
1259 table entry. A similar situation occurs when creating
1260 shared libraries and symbol visibility changes render the
1261 symbol local.
1262
1263 If on the other hand, we are creating an executable, we
1264 may need to keep relocations for symbols satisfied by a
1265 dynamic library if we manage to avoid copy relocs for the
1266 symbol. */
0e1862bb 1267 if ((bfd_link_pic (info)
0451c93c 1268 && (sec->flags & SEC_ALLOC) != 0
ec338859 1269 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1270 && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1271 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1272 && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL
befc3abb 1273 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
0451c93c
MS		 1274 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1275 || (h != NULL
8c21ca21 1276 && (! SYMBOLIC_BIND (info, h)
0451c93c 1277 || h->root.type == bfd_link_hash_defweak
f5385ebf 1278 || !h->def_regular))))
64285810 1279 || (ELIMINATE_COPY_RELOCS
0e1862bb 1280 && !bfd_link_pic (info)
0451c93c
MS		 1281 && (sec->flags & SEC_ALLOC) != 0
1282 && h != NULL
1283 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1284 || !h->def_regular)))
a85d7ed0 1285 {
00d8c7a9
AK		 1286 struct elf_dyn_relocs *p;
1287 struct elf_dyn_relocs **head;
ec338859 1288
0451c93c
MS		 1289 /* We must copy these reloc types into the output file.
1290 Create a reloc section in dynobj and make room for
1291 this reloc. */
a85d7ed0
NC		 1292 if (sreloc == NULL)
1293 {
0451c93c
MS		 1294 if (htab->elf.dynobj == NULL)
1295 htab->elf.dynobj = abfd;
a85d7ed0 1296
83bac4b0
NC		 1297 sreloc = _bfd_elf_make_dynamic_reloc_section
1298 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1299
a85d7ed0 1300 if (sreloc == NULL)
83bac4b0 1301 return FALSE;
a85d7ed0
NC		 1302 }
1303
0451c93c
MS		 1304 /* If this is a global symbol, we count the number of
1305 relocations we need for this symbol. */
1306 if (h != NULL)
a85d7ed0 1307 {
ec338859 1308 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS		 1309 }
1310 else
1311 {
ec338859
AM		 1312 /* Track dynamic relocs needed for local syms too.
1313 We really need local syms available to do this
1314 easily. Oh well. */
ec338859 1315 asection *s;
6edfbbad 1316 void *vpp;
ae9a127f 1317
87d72d41
AM		 1318 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1319 abfd, r_symndx);
1320 if (isym == NULL)
b34976b6 1321 return FALSE;
ec338859 1322
87d72d41
AM		 1323 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1324 if (s == NULL)
1325 s = sec;
1326
6edfbbad 1327 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1328 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1329 }
1330
1331 p = *head;
1332 if (p == NULL || p->sec != sec)
1333 {
1334 bfd_size_type amt = sizeof *p;
ae9a127f 1335
00d8c7a9 1336 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1337 bfd_alloc (htab->elf.dynobj, amt));
1338 if (p == NULL)
b34976b6 1339 return FALSE;
ec338859
AM		 1340 p->next = *head;
1341 *head = p;
1342 p->sec = sec;
1343 p->count = 0;
1344 p->pc_count = 0;
a85d7ed0 1345 }
ec338859
AM		 1346
1347 p->count += 1;
1348 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
fb798c50 1349 || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL
ec338859 1350 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
fb798c50 1351 || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL
befc3abb 1352 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
ec338859
AM		 1353 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1354 p->pc_count += 1;
a85d7ed0 1355 }
a85d7ed0 1356 break;
ec338859 1357
a85d7ed0
NC		 1358 /* This relocation describes the C++ object vtable hierarchy.
1359 Reconstruct it for later use during GC. */
26e41594 1360 case R_390_GNU_VTINHERIT:
c152c796 1361 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
26e41594
AM		 1362 return FALSE;
1363 break;
ec338859 1364
a85d7ed0
NC		 1365 /* This relocation describes which C++ vtable entries are actually
1366 used. Record for later use during GC. */
26e41594 1367 case R_390_GNU_VTENTRY:
d17e0c6e
JB		 1368 BFD_ASSERT (h != NULL);
1369 if (h != NULL
1370 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
26e41594
AM		 1371 return FALSE;
1372 break;
ec338859 1373
a85d7ed0
NC		 1374 default:
1375 break;
1376 }
1377 }
1378
b34976b6 1379 return TRUE;
a85d7ed0
NC		 1380}
1381
1382/* Return the section that should be marked against GC for a given
1383 relocation. */
1384
1385static asection *
07adf181
AM		 1386elf_s390_gc_mark_hook (asection *sec,
1387 struct bfd_link_info *info,
1388 Elf_Internal_Rela *rel,
1389 struct elf_link_hash_entry *h,
1390 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1391{
1392 if (h != NULL)
07adf181
AM		 1393 switch (ELF32_R_TYPE (rel->r_info))
1394 {
1395 case R_390_GNU_VTINHERIT:
1396 case R_390_GNU_VTENTRY:
1397 return NULL;
1398 }
1399 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0 1400
a85d7ed0
NC		 1401}
1402
1403/* Update the got entry reference counts for the section being removed. */
1404
b34976b6 1405static bfd_boolean
07adf181
AM		 1406elf_s390_gc_sweep_hook (bfd *abfd,
1407 struct bfd_link_info *info,
1408 asection *sec,
1409 const Elf_Internal_Rela *relocs)
a85d7ed0 1410{
470b557a 1411 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1412 Elf_Internal_Shdr *symtab_hdr;
1413 struct elf_link_hash_entry **sym_hashes;
1414 bfd_signed_vma *local_got_refcounts;
1415 const Elf_Internal_Rela *rel, *relend;
a85d7ed0 1416
0e1862bb 1417 if (bfd_link_relocatable (info))
7dda2462
TG		 1418 return TRUE;
1419
470b557a
AK		 1420 htab = elf_s390_hash_table (info);
1421 if (htab == NULL)
1422 return FALSE;
1423
ec338859 1424 elf_section_data (sec)->local_dynrel = NULL;
a85d7ed0 1425
0ffa91dd 1426 symtab_hdr = &elf_symtab_hdr (abfd);
0451c93c
MS		 1427 sym_hashes = elf_sym_hashes (abfd);
1428 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0
NC		 1429
1430 relend = relocs + sec->reloc_count;
1431 for (rel = relocs; rel < relend; rel++)
5236c819 1432 {
26e41594
AM		 1433 unsigned long r_symndx;
1434 unsigned int r_type;
1435 struct elf_link_hash_entry *h = NULL;
1436
5236c819 1437 r_symndx = ELF32_R_SYM (rel->r_info);
26e41594
AM		 1438 if (r_symndx >= symtab_hdr->sh_info)
1439 {
1440 struct elf_s390_link_hash_entry *eh;
00d8c7a9
AK		 1441 struct elf_dyn_relocs **pp;
1442 struct elf_dyn_relocs *p;
0451c93c 1443
26e41594 1444 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1445 while (h->root.type == bfd_link_hash_indirect
1446 || h->root.type == bfd_link_hash_warning)
1447 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1448 eh = (struct elf_s390_link_hash_entry *) h;
5236c819 1449
26e41594
AM		 1450 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1451 if (p->sec == sec)
1452 {
1453 /* Everything must go for SEC. */
1454 *pp = p->next;
1455 break;
1456 }
1457 }
470b557a
AK		 1458 else
1459 {
1460 Elf_Internal_Sym *isym;
1461
1462 /* A local symbol. */
1463 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1464 abfd, r_symndx);
1465 if (isym == NULL)
1466 return FALSE;
1467
1468 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1469 {
1470 struct plt_entry *plt = elf_s390_local_plt (abfd);
1471 if (plt[r_symndx].plt.refcount > 0)
1472 plt[r_symndx].plt.refcount--;
1473 }
1474 }
26e41594
AM		 1475
1476 r_type = ELF32_R_TYPE (rel->r_info);
1477 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
69fc87f1 1478 switch (r_type)
5236c819 1479 {
69fc87f1
MS		 1480 case R_390_TLS_LDM32:
1481 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1482 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1483 break;
1484
ef05be83
AK		 1485 case R_390_GOTOFF16:
1486 case R_390_GOTOFF32:
d47b13e0 1487 if (h != NULL && s390_is_ifunc_symbol_p (h) && h->def_regular)
01a53584
AK		 1488 {
1489 h->plt.refcount--;
1490 break;
1491 }
1492
ef05be83
AK		 1493 case R_390_GOTPC:
1494 case R_390_GOTPCDBL:
1495 break;
1496
69fc87f1
MS		 1497 case R_390_TLS_GD32:
1498 case R_390_TLS_IE32:
1499 case R_390_TLS_GOTIE12:
bd1ea41b 1500 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1501 case R_390_TLS_GOTIE32:
1502 case R_390_TLS_IEENT:
5236c819
MS		 1503 case R_390_GOT12:
1504 case R_390_GOT16:
bd1ea41b 1505 case R_390_GOT20:
5236c819 1506 case R_390_GOT32:
5236c819
MS		 1507 case R_390_GOTENT:
1508 if (h != NULL)
1509 {
1510 if (h->got.refcount > 0)
1511 h->got.refcount -= 1;
1512 }
1513 else if (local_got_refcounts != NULL)
1514 {
1515 if (local_got_refcounts[r_symndx] > 0)
1516 local_got_refcounts[r_symndx] -= 1;
1517 }
26e41594 1518 break;
a85d7ed0 1519
5236c819
MS		 1520 case R_390_8:
1521 case R_390_12:
1522 case R_390_16:
bd1ea41b 1523 case R_390_20:
5236c819
MS		 1524 case R_390_32:
1525 case R_390_PC16:
fb798c50 1526 case R_390_PC12DBL:
5236c819 1527 case R_390_PC16DBL:
fb798c50 1528 case R_390_PC24DBL:
5236c819
MS		 1529 case R_390_PC32DBL:
1530 case R_390_PC32:
0e1862bb 1531 if (bfd_link_pic (info))
26e41594
AM		 1532 break;
1533 /* Fall through. */
1534
fb798c50 1535 case R_390_PLT12DBL:
69fc87f1 1536 case R_390_PLT16DBL:
fb798c50 1537 case R_390_PLT24DBL:
69fc87f1
MS		 1538 case R_390_PLT32DBL:
1539 case R_390_PLT32:
1540 case R_390_PLTOFF16:
1541 case R_390_PLTOFF32:
1542 if (h != NULL)
1543 {
1544 if (h->plt.refcount > 0)
1545 h->plt.refcount -= 1;
1546 }
1547 break;
1548
1549 case R_390_GOTPLT12:
1550 case R_390_GOTPLT16:
bd1ea41b 1551 case R_390_GOTPLT20:
69fc87f1
MS		 1552 case R_390_GOTPLT32:
1553 case R_390_GOTPLTENT:
1554 if (h != NULL)
1555 {
1556 if (h->plt.refcount > 0)
1557 {
1558 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1559 h->plt.refcount -= 1;
1560 }
1561 }
1562 else if (local_got_refcounts != NULL)
1563 {
1564 if (local_got_refcounts[r_symndx] > 0)
1565 local_got_refcounts[r_symndx] -= 1;
1566 }
1567 break;
1568
5236c819
MS		 1569 default:
1570 break;
1571 }
1572 }
a85d7ed0 1573
b34976b6 1574 return TRUE;
a85d7ed0
NC		 1575}
1576
5236c819
MS		 1577/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1578 entry but we found we will not create any. Called when we find we will
1579 not have any PLT for this symbol, by for example
1580 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1581 or elf_s390_size_dynamic_sections if no dynamic sections will be
1582 created (we're only linking static objects). */
1583
1584static void
2c3fc389 1585elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1586{
1587 if (h->elf.root.type == bfd_link_hash_warning)
1588 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1589
1590 if (h->gotplt_refcount <= 0)
1591 return;
1592
1593 /* We simply add the number of gotplt references to the number
1594 * of got references for this symbol. */
1595 h->elf.got.refcount += h->gotplt_refcount;
1596 h->gotplt_refcount = -1;
1597}
1598
a85d7ed0
NC		 1599/* Adjust a symbol defined by a dynamic object and referenced by a
1600 regular object. The current definition is in some section of the
1601 dynamic object, but we're not including those sections. We have to
1602 change the definition to something the rest of the link can
1603 understand. */
1604
b34976b6 1605static bfd_boolean
2c3fc389
NC		 1606elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1607 struct elf_link_hash_entry *h)
a85d7ed0 1608{
0451c93c 1609 struct elf_s390_link_hash_table *htab;
5474d94f 1610 asection *s, *srel;
a85d7ed0 1611
470b557a
AK		 1612 /* STT_GNU_IFUNC symbol must go through PLT. */
1613 if (s390_is_ifunc_symbol_p (h))
d8ee9e44
AK		 1614 {
1615 /* All local STT_GNU_IFUNC references must be treated as local
1616 calls via local PLT. */
1617 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1618 {
1619 bfd_size_type pc_count = 0, count = 0;
1620 struct elf_dyn_relocs **pp;
1621 struct elf_s390_link_hash_entry *eh;
1622 struct elf_dyn_relocs *p;
1623
1624 eh = (struct elf_s390_link_hash_entry *) h;
1625 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1626 {
1627 pc_count += p->pc_count;
1628 p->count -= p->pc_count;
1629 p->pc_count = 0;
1630 count += p->count;
1631 if (p->count == 0)
1632 *pp = p->next;
1633 else
1634 pp = &p->next;
1635 }
1636
1637 if (pc_count || count)
1638 {
1639 h->needs_plt = 1;
1640 h->non_got_ref = 1;
1641 if (h->plt.refcount <= 0)
1642 h->plt.refcount = 1;
1643 else
1644 h->plt.refcount += 1;
1645 }
1646 }
1647
1648 if (h->plt.refcount <= 0)
1649 {
1650 h->plt.offset = (bfd_vma) -1;
1651 h->needs_plt = 0;
1652 }
1653 return TRUE;
1654 }
470b557a 1655
a85d7ed0
NC		 1656 /* If this is a function, put it in the procedure linkage table. We
1657 will fill in the contents of the procedure linkage table later
cedb70c5 1658 (although we could actually do it here). */
a85d7ed0 1659 if (h->type == STT_FUNC
f5385ebf 1660 || h->needs_plt)
a85d7ed0 1661 {
0451c93c 1662 if (h->plt.refcount <= 0
8c21ca21
AK		 1663 || SYMBOL_CALLS_LOCAL (info, h)
1664 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1665 && h->root.type != bfd_link_hash_undefweak))
a85d7ed0
NC		 1666 {
1667 /* This case can occur if we saw a PLT32 reloc in an input
26e41594
AM		 1668 file, but the symbol was never referred to by a dynamic
1669 object, or if all references were garbage collected. In
a85d7ed0
NC		 1670 such a case, we don't actually need to build a procedure
1671 linkage table, and we can just do a PC32 reloc instead. */
1672 h->plt.offset = (bfd_vma) -1;
f5385ebf 1673 h->needs_plt = 0;
5236c819 1674 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1675 }
1676
b34976b6 1677 return TRUE;
a85d7ed0 1678 }
bbd7ec4a 1679 else
0451c93c
MS		 1680 /* It's possible that we incorrectly decided a .plt reloc was
1681 needed for an R_390_PC32 reloc to a non-function sym in
1682 check_relocs. We can't decide accurately between function and
1683 non-function syms in check-relocs; Objects loaded later in
1684 the link may change h->type. So fix it now. */
bbd7ec4a 1685 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1686
1687 /* If this is a weak symbol, and there is a real definition, the
1688 processor independent code will have arranged for us to see the
1689 real definition first, and we can just use the same value. */
f6e332e6 1690 if (h->u.weakdef != NULL)
a85d7ed0 1691 {
f6e332e6
AM		 1692 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1693 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1694 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1695 h->root.u.def.value = h->u.weakdef->root.u.def.value;
64285810 1696 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1697 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1698 return TRUE;
a85d7ed0
NC		 1699 }
1700
1701 /* This is a reference to a symbol defined by a dynamic object which
1702 is not a function. */
1703
1704 /* If we are creating a shared library, we must presume that the
1705 only references to the symbol are via the global offset table.
1706 For such cases we need not do anything here; the relocations will
1707 be handled correctly by relocate_section. */
0e1862bb 1708 if (bfd_link_pic (info))
b34976b6 1709 return TRUE;
a85d7ed0
NC		 1710
1711 /* If there are no references to this symbol that do not use the
1712 GOT, we don't need to generate a copy reloc. */
f5385ebf 1713 if (!h->non_got_ref)
b34976b6 1714 return TRUE;
a85d7ed0 1715
0451c93c
MS		 1716 /* If -z nocopyreloc was given, we won't generate them either. */
1717 if (info->nocopyreloc)
1718 {
f5385ebf 1719 h->non_got_ref = 0;
b34976b6 1720 return TRUE;
0451c93c
MS		 1721 }
1722
64285810 1723 if (ELIMINATE_COPY_RELOCS)
0451c93c 1724 {
64285810 1725 struct elf_s390_link_hash_entry * eh;
00d8c7a9 1726 struct elf_dyn_relocs *p;
0451c93c 1727
64285810
MS		 1728 eh = (struct elf_s390_link_hash_entry *) h;
1729 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1730 {
1731 s = p->sec->output_section;
1732 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1733 break;
1734 }
1735
1736 /* If we didn't find any dynamic relocs in read-only sections, then
1737 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1738 if (p == NULL)
1739 {
f5385ebf 1740 h->non_got_ref = 0;
64285810
MS		 1741 return TRUE;
1742 }
0451c93c
MS		 1743 }
1744
a85d7ed0
NC		 1745 /* We must allocate the symbol in our .dynbss section, which will
1746 become part of the .bss section of the executable. There will be
1747 an entry for this symbol in the .dynsym section. The dynamic
1748 object will contain position independent code, so all references
1749 from the dynamic object to this symbol will go through the global
1750 offset table. The dynamic linker will use the .dynsym entry to
1751 determine the address it must put in the global offset table, so
1752 both the dynamic object and the regular object will refer to the
1753 same memory location for the variable. */
1754
0451c93c 1755 htab = elf_s390_hash_table (info);
a85d7ed0 1756
0451c93c
MS		 1757 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1758 copy the initial value out of the dynamic object and into the
1759 runtime process image. */
5474d94f
AM		 1760 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1761 {
1762 s = htab->elf.sdynrelro;
1763 srel = htab->elf.sreldynrelro;
1764 }
1765 else
1766 {
1767 s = htab->elf.sdynbss;
1768 srel = htab->elf.srelbss;
1769 }
1d7e9d18 1770 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1771 {
5474d94f 1772 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 1773 h->needs_copy = 1;
a85d7ed0
NC		 1774 }
1775
6cabe1ea 1776 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a85d7ed0
NC		 1777}
1778
0451c93c
MS		 1779/* Allocate space in .plt, .got and associated reloc sections for
1780 dynamic relocs. */
1781
b34976b6 1782static bfd_boolean
2c3fc389 1783allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1784{
1785 struct bfd_link_info *info;
1786 struct elf_s390_link_hash_table *htab;
470b557a 1787 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1788 struct elf_dyn_relocs *p;
0451c93c 1789
e92d460e 1790 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1791 return TRUE;
0451c93c
MS		 1792
1793 info = (struct bfd_link_info *) inf;
1794 htab = elf_s390_hash_table (info);
1795
470b557a
AK		 1796 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1797 here if it is defined and referenced in a non-shared object. */
1798 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
61643fba 1799 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
470b557a
AK		 1800 else if (htab->elf.dynamic_sections_created
1801 && h->plt.refcount > 0)
0451c93c
MS		 1802 {
1803 /* Make sure this symbol is output as a dynamic symbol.
1804 Undefined weak syms won't yet be marked as dynamic. */
1805 if (h->dynindx == -1
f5385ebf 1806 && !h->forced_local)
0451c93c 1807 {
c152c796 1808 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1809 return FALSE;
0451c93c
MS		 1810 }
1811
0e1862bb 1812 if (bfd_link_pic (info)
4ec72bde 1813 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1814 {
f41345a7 1815 asection *s = htab->elf.splt;
0451c93c
MS		 1816
1817 /* If this is the first .plt entry, make room for the special
1818 first entry. */
eea6121a
AM		 1819 if (s->size == 0)
1820 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1821
eea6121a 1822 h->plt.offset = s->size;
0451c93c
MS		 1823
1824 /* If this symbol is not defined in a regular file, and we are
1825 not generating a shared library, then set the symbol to this
1826 location in the .plt. This is required to make function
1827 pointers compare as equal between the normal executable and
1828 the shared library. */
0e1862bb 1829 if (! bfd_link_pic (info)
f5385ebf 1830 && !h->def_regular)
0451c93c
MS		 1831 {
1832 h->root.u.def.section = s;
1833 h->root.u.def.value = h->plt.offset;
1834 }
ec338859 1835
0451c93c 1836 /* Make room for this entry. */
eea6121a 1837 s->size += PLT_ENTRY_SIZE;
ec338859 1838
0451c93c
MS		 1839 /* We also need to make an entry in the .got.plt section, which
1840 will be placed in the .got section by the linker script. */
f41345a7 1841 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1842
1843 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1844 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1845 }
1846 else
1847 {
1848 h->plt.offset = (bfd_vma) -1;
f5385ebf 1849 h->needs_plt = 0;
5236c819 1850 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c 1851 }
ec338859 1852 }
0451c93c
MS		 1853 else
1854 {
1855 h->plt.offset = (bfd_vma) -1;
f5385ebf 1856 h->needs_plt = 0;
5236c819 1857 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
ec338859
AM		 1858 }
1859
69fc87f1
MS		 1860 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1861 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1862 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1863 we can save the dynamic TLS relocation. */
1864 if (h->got.refcount > 0
0e1862bb 1865 && !bfd_link_pic (info)
69fc87f1
MS		 1866 && h->dynindx == -1
1867 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
0451c93c 1868 {
69fc87f1
MS		 1869 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1870 /* For the GOTIE access without a literal pool entry the offset has
1871 to be stored somewhere. The immediate value in the instruction
1872 is not bit enough so the value is stored in the got. */
1873 {
f41345a7
AK		 1874 h->got.offset = htab->elf.sgot->size;
1875 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1876 }
1877 else
1878 h->got.offset = (bfd_vma) -1;
1879 }
1880 else if (h->got.refcount > 0)
ceada896 1881 {
0451c93c 1882 asection *s;
b34976b6 1883 bfd_boolean dyn;
69fc87f1 1884 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1885
1886 /* Make sure this symbol is output as a dynamic symbol.
1887 Undefined weak syms won't yet be marked as dynamic. */
1888 if (h->dynindx == -1
f5385ebf 1889 && !h->forced_local)
0451c93c 1890 {
c152c796 1891 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1892 return FALSE;
0451c93c
MS		 1893 }
1894
f41345a7 1895 s = htab->elf.sgot;
eea6121a
AM		 1896 h->got.offset = s->size;
1897 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1898 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1899 if (tls_type == GOT_TLS_GD)
eea6121a 1900 s->size += GOT_ENTRY_SIZE;
0451c93c 1901 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1902 /* R_390_TLS_IE32 needs one dynamic relocation,
1903 R_390_TLS_GD32 needs one if local symbol and two if global. */
1904 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1905 || tls_type >= GOT_TLS_IE)
f41345a7 1906 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1 1907 else if (tls_type == GOT_TLS_GD)
f41345a7 1908 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela);
82058a73
MS		 1909 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1910 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 1911 && (bfd_link_pic (info)
82058a73 1912 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1913 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1914 }
1915 else
1916 h->got.offset = (bfd_vma) -1;
1917
0451c93c 1918 if (eh->dyn_relocs == NULL)
b34976b6 1919 return TRUE;
0451c93c
MS		 1920
1921 /* In the shared -Bsymbolic case, discard space allocated for
1922 dynamic pc-relative relocs against symbols which turn out to be
1923 defined in regular objects. For the normal shared case, discard
1924 space for pc-relative relocs that have become local due to symbol
1925 visibility changes. */
1926
0e1862bb 1927 if (bfd_link_pic (info))
0451c93c 1928 {
8c21ca21 1929 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1930 {
00d8c7a9 1931 struct elf_dyn_relocs **pp;
0451c93c
MS		 1932
1933 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1934 {
1935 p->count -= p->pc_count;
1936 p->pc_count = 0;
1937 if (p->count == 0)
1938 *pp = p->next;
1939 else
1940 pp = &p->next;
1941 }
1942 }
82058a73
MS		 1943
1944 /* Also discard relocs on undefined weak syms with non-default
1945 visibility. */
22d606e9 1946 if (eh->dyn_relocs != NULL
82058a73 1947 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 1948 {
1949 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1950 eh->dyn_relocs = NULL;
1951
1952 /* Make sure undefined weak symbols are output as a dynamic
1953 symbol in PIEs. */
1954 else if (h->dynindx == -1
1955 && !h->forced_local)
1956 {
1957 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1958 return FALSE;
1959 }
1960 }
0451c93c 1961 }
64285810 1962 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1963 {
1964 /* For the non-shared case, discard space for relocs against
1965 symbols which turn out to need copy relocs or are not
1966 dynamic. */
1967
f5385ebf
AM		 1968 if (!h->non_got_ref
1969 && ((h->def_dynamic
1970 && !h->def_regular)
0451c93c
MS		 1971 || (htab->elf.dynamic_sections_created
1972 && (h->root.type == bfd_link_hash_undefweak
1973 || h->root.type == bfd_link_hash_undefined))))
1974 {
1975 /* Make sure this symbol is output as a dynamic symbol.
1976 Undefined weak syms won't yet be marked as dynamic. */
1977 if (h->dynindx == -1
f5385ebf 1978 && !h->forced_local)
0451c93c 1979 {
c152c796 1980 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1981 return FALSE;
0451c93c
MS		 1982 }
1983
1984 /* If that succeeded, we know we'll be keeping all the
1985 relocs. */
1986 if (h->dynindx != -1)
1987 goto keep;
1988 }
1989
1990 eh->dyn_relocs = NULL;
1991
ec338859 1992 keep: ;
0451c93c
MS		 1993 }
1994
1995 /* Finally, allocate space. */
1996 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1997 {
1998 asection *sreloc = elf_section_data (p->sec)->sreloc;
ae9a127f 1999
eea6121a 2000 sreloc->size += p->count * sizeof (Elf32_External_Rela);
0451c93c
MS		 2001 }
2002
b34976b6 2003 return TRUE;
0451c93c
MS		 2004}
2005
2006/* Find any dynamic relocs that apply to read-only sections. */
2007
b34976b6 2008static bfd_boolean
2c3fc389 2009readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 2010{
2011 struct elf_s390_link_hash_entry *eh;
00d8c7a9 2012 struct elf_dyn_relocs *p;
0451c93c
MS		 2013
2014 eh = (struct elf_s390_link_hash_entry *) h;
2015 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2016 {
2017 asection *s = p->sec->output_section;
2018
2019 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2020 {
2021 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2022
2023 info->flags |= DF_TEXTREL;
2024
2025 /* Not an error, just cut short the traversal. */
b34976b6 2026 return FALSE;
0451c93c
MS		 2027 }
2028 }
b34976b6 2029 return TRUE;
0451c93c
MS		 2030}
2031
a85d7ed0
NC		 2032/* Set the sizes of the dynamic sections. */
2033
b34976b6 2034static bfd_boolean
2c3fc389
NC		 2035elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2036 struct bfd_link_info *info)
a85d7ed0 2037{
0451c93c 2038 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2039 bfd *dynobj;
2040 asection *s;
b34976b6 2041 bfd_boolean relocs;
0451c93c 2042 bfd *ibfd;
a85d7ed0 2043
0451c93c
MS		 2044 htab = elf_s390_hash_table (info);
2045 dynobj = htab->elf.dynobj;
2046 if (dynobj == NULL)
2047 abort ();
a85d7ed0 2048
0451c93c 2049 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2050 {
2051 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 2052 if (bfd_link_executable (info) && !info->nointerp)
a85d7ed0 2053 {
3d4d4302 2054 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 2055 if (s == NULL)
2056 abort ();
eea6121a 2057 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 2058 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2059 }
2060 }
a85d7ed0 2061
0451c93c
MS		 2062 /* Set up .got offsets for local syms, and space for local dynamic
2063 relocs. */
c72f2fb2 2064 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a85d7ed0 2065 {
0451c93c
MS		 2066 bfd_signed_vma *local_got;
2067 bfd_signed_vma *end_local_got;
69fc87f1 2068 char *local_tls_type;
0451c93c
MS		 2069 bfd_size_type locsymcount;
2070 Elf_Internal_Shdr *symtab_hdr;
2071 asection *srela;
470b557a
AK		 2072 struct plt_entry *local_plt;
2073 unsigned int i;
a85d7ed0 2074
0ffa91dd 2075 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 2076 continue;
2077
0451c93c 2078 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 2079 {
00d8c7a9 2080 struct elf_dyn_relocs *p;
0451c93c 2081
6edfbbad 2082 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 2083 {
ec338859
AM		 2084 if (!bfd_is_abs_section (p->sec)
2085 && bfd_is_abs_section (p->sec->output_section))
2086 {
2087 /* Input section has been discarded, either because
2088 it is a copy of a linkonce section or due to
2089 linker script /DISCARD/, so we'll be discarding
2090 the relocs too. */
2091 }
248866a8 2092 else if (p->count != 0)
ec338859
AM		 2093 {
2094 srela = elf_section_data (p->sec)->sreloc;
eea6121a 2095 srela->size += p->count * sizeof (Elf32_External_Rela);
248866a8
AM		 2096 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2097 info->flags |= DF_TEXTREL;
ec338859 2098 }
a85d7ed0
NC		 2099 }
2100 }
0451c93c
MS		 2101
2102 local_got = elf_local_got_refcounts (ibfd);
2103 if (!local_got)
2104 continue;
2105
0ffa91dd 2106 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 2107 locsymcount = symtab_hdr->sh_info;
2108 end_local_got = local_got + locsymcount;
69fc87f1 2109 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 2110 s = htab->elf.sgot;
2111 srela = htab->elf.srelgot;
69fc87f1 2112 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 2113 {
0451c93c 2114 if (*local_got > 0)
a85d7ed0 2115 {
eea6121a
AM		 2116 *local_got = s->size;
2117 s->size += GOT_ENTRY_SIZE;
69fc87f1 2118 if (*local_tls_type == GOT_TLS_GD)
eea6121a 2119 s->size += GOT_ENTRY_SIZE;
0e1862bb 2120 if (bfd_link_pic (info))
eea6121a 2121 srela->size += sizeof (Elf32_External_Rela);
a85d7ed0
NC		 2122 }
2123 else
0451c93c
MS		 2124 *local_got = (bfd_vma) -1;
2125 }
470b557a
AK		 2126 local_plt = elf_s390_local_plt (ibfd);
2127 for (i = 0; i < symtab_hdr->sh_info; i++)
2128 {
2129 if (local_plt[i].plt.refcount > 0)
2130 {
2131 local_plt[i].plt.offset = htab->elf.iplt->size;
2132 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2133 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2134 htab->elf.irelplt->size += RELA_ENTRY_SIZE;
2135 }
2136 else
2137 local_plt[i].plt.offset = (bfd_vma) -1;
2138 }
0451c93c
MS		 2139 }
2140
69fc87f1
MS		 2141 if (htab->tls_ldm_got.refcount > 0)
2142 {
2143 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2144 relocs. */
f41345a7
AK		 2145 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2146 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2147 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1
MS		 2148 }
2149 else
2150 htab->tls_ldm_got.offset = -1;
2151
0451c93c
MS		 2152 /* Allocate global sym .plt and .got entries, and space for global
2153 sym dynamic relocs. */
2c3fc389 2154 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 2155
2156 /* We now have determined the sizes of the various dynamic sections.
2157 Allocate memory for them. */
b34976b6 2158 relocs = FALSE;
0451c93c
MS		 2159 for (s = dynobj->sections; s != NULL; s = s->next)
2160 {
2161 if ((s->flags & SEC_LINKER_CREATED) == 0)
2162 continue;
2163
f41345a7
AK		 2164 if (s == htab->elf.splt
2165 || s == htab->elf.sgot
2166 || s == htab->elf.sgotplt
9d19e4fd 2167 || s == htab->elf.sdynbss
5474d94f 2168 || s == htab->elf.sdynrelro
470b557a
AK		 2169 || s == htab->elf.iplt
2170 || s == htab->elf.igotplt
2171 || s == htab->irelifunc)
0451c93c
MS		 2172 {
2173 /* Strip this section if we don't need it; see the
2174 comment below. */
a85d7ed0 2175 }
0112cd26 2176 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 2177 {
eea6121a 2178 if (s->size != 0)
b34976b6 2179 relocs = TRUE;
ec338859 2180
0451c93c
MS		 2181 /* We use the reloc_count field as a counter if we need
2182 to copy relocs into the output file. */
2183 s->reloc_count = 0;
2184 }
2185 else
a85d7ed0
NC		 2186 {
2187 /* It's not one of our sections, so don't allocate space. */
2188 continue;
2189 }
2190
eea6121a 2191 if (s->size == 0)
a85d7ed0 2192 {
0451c93c
MS		 2193 /* If we don't need this section, strip it from the
2194 output file. This is to handle .rela.bss and
2195 .rela.plt. We must create it in
2196 create_dynamic_sections, because it must be created
2197 before the linker maps input sections to output
2198 sections. The linker does that before
2199 adjust_dynamic_symbol is called, and it is that
2200 function which decides whether anything needs to go
2201 into these sections. */
2202
8423293d 2203 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 2204 continue;
2205 }
2206
c456f082
AM		 2207 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2208 continue;
2209
0451c93c
MS		 2210 /* Allocate memory for the section contents. We use bfd_zalloc
2211 here in case unused entries are not reclaimed before the
2212 section's contents are written out. This should not happen,
2213 but this way if it does, we get a R_390_NONE reloc instead
2214 of garbage. */
eea6121a 2215 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 2216 if (s->contents == NULL)
b34976b6 2217 return FALSE;
a85d7ed0 2218 }
ec338859 2219
0451c93c 2220 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2221 {
2222 /* Add some entries to the .dynamic section. We fill in the
2223 values later, in elf_s390_finish_dynamic_sections, but we
2224 must add the entries now so that we get the correct size for
2225 the .dynamic section. The DT_DEBUG entry is filled in by the
2226 dynamic linker and used by the debugger. */
dc810e39 2227#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2228 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
ec338859 2229
0e1862bb 2230 if (bfd_link_executable (info))
a85d7ed0 2231 {
dc810e39 2232 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2233 return FALSE;
a85d7ed0 2234 }
ec338859 2235
f41345a7 2236 if (htab->elf.splt->size != 0)
a85d7ed0 2237 {
dc810e39
AM		 2238 if (!add_dynamic_entry (DT_PLTGOT, 0)
2239 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2240 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2241 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2242 return FALSE;
a85d7ed0 2243 }
ec338859 2244
a85d7ed0 2245 if (relocs)
26e41594
AM		 2246 {
2247 if (!add_dynamic_entry (DT_RELA, 0)
2248 || !add_dynamic_entry (DT_RELASZ, 0)
2249 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 2250 return FALSE;
a85d7ed0 2251
0451c93c
MS		 2252 /* If any dynamic relocs apply to a read-only section,
2253 then we need a DT_TEXTREL entry. */
248866a8 2254 if ((info->flags & DF_TEXTREL) == 0)
2c3fc389 2255 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
ec338859 2256
0451c93c
MS		 2257 if ((info->flags & DF_TEXTREL) != 0)
2258 {
2259 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2260 return FALSE;
0451c93c 2261 }
a85d7ed0
NC		 2262 }
2263 }
dc810e39 2264#undef add_dynamic_entry
ec338859 2265
b34976b6 2266 return TRUE;
a85d7ed0
NC		 2267}
2268
69fc87f1
MS		 2269/* Return the base VMA address which should be subtracted from real addresses
2270 when resolving @dtpoff relocation.
2271 This is PT_TLS segment p_vaddr. */
2272
2273static bfd_vma
2c3fc389 2274dtpoff_base (struct bfd_link_info *info)
69fc87f1 2275{
e1918d23
AM		 2276 /* If tls_sec is NULL, we should have signalled an error already. */
2277 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2278 return 0;
e1918d23 2279 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2280}
2281
2282/* Return the relocation value for @tpoff relocation
2283 if STT_TLS virtual address is ADDRESS. */
2284
2285static bfd_vma
2c3fc389 2286tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2287{
e1918d23 2288 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2289
e1918d23
AM		 2290 /* If tls_sec is NULL, we should have signalled an error already. */
2291 if (htab->tls_sec == NULL)
69fc87f1 2292 return 0;
e1918d23 2293 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2294}
2295
2296/* Complain if TLS instruction relocation is against an invalid
2297 instruction. */
2298
2299static void
2c3fc389
NC		 2300invalid_tls_insn (bfd *input_bfd,
2301 asection *input_section,
2302 Elf_Internal_Rela *rel)
69fc87f1
MS		 2303{
2304 reloc_howto_type *howto;
2305
2306 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
4eca0228 2307 _bfd_error_handler
695344c0 2308 /* xgettext:c-format */
d003868e
AM		 2309 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2310 input_bfd,
2311 input_section,
69fc87f1
MS		 2312 (long) rel->r_offset,
2313 howto->name);
77df2968 2314 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2315}
2316
a85d7ed0
NC		 2317/* Relocate a 390 ELF section. */
2318
b34976b6 2319static bfd_boolean
2c3fc389
NC		 2320elf_s390_relocate_section (bfd *output_bfd,
2321 struct bfd_link_info *info,
2322 bfd *input_bfd,
2323 asection *input_section,
2324 bfd_byte *contents,
2325 Elf_Internal_Rela *relocs,
2326 Elf_Internal_Sym *local_syms,
2327 asection **local_sections)
a85d7ed0 2328{
0451c93c 2329 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2330 Elf_Internal_Shdr *symtab_hdr;
2331 struct elf_link_hash_entry **sym_hashes;
2332 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2333 Elf_Internal_Rela *rel;
2334 Elf_Internal_Rela *relend;
2335
0ffa91dd
NC		 2336 BFD_ASSERT (is_s390_elf (input_bfd));
2337
0451c93c 2338 htab = elf_s390_hash_table (info);
0ffa91dd 2339 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2340 sym_hashes = elf_sym_hashes (input_bfd);
2341 local_got_offsets = elf_local_got_offsets (input_bfd);
2342
a85d7ed0
NC		 2343 rel = relocs;
2344 relend = relocs + input_section->reloc_count;
2345 for (; rel < relend; rel++)
2346 {
5236c819 2347 unsigned int r_type;
a85d7ed0
NC		 2348 reloc_howto_type *howto;
2349 unsigned long r_symndx;
2350 struct elf_link_hash_entry *h;
2351 Elf_Internal_Sym *sym;
2352 asection *sec;
0451c93c 2353 bfd_vma off;
a85d7ed0 2354 bfd_vma relocation;
b34976b6 2355 bfd_boolean unresolved_reloc;
a85d7ed0 2356 bfd_reloc_status_type r;
69fc87f1 2357 int tls_type;
470b557a 2358 asection *base_got = htab->elf.sgot;
ec338859 2359
a85d7ed0
NC		 2360 r_type = ELF32_R_TYPE (rel->r_info);
2361 if (r_type == (int) R_390_GNU_VTINHERIT
26e41594
AM		 2362 || r_type == (int) R_390_GNU_VTENTRY)
2363 continue;
5236c819 2364 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2365 {
2366 bfd_set_error (bfd_error_bad_value);
b34976b6 2367 return FALSE;
a85d7ed0 2368 }
ec338859 2369
b491616a 2370 howto = elf_howto_table + r_type;
a85d7ed0 2371 r_symndx = ELF32_R_SYM (rel->r_info);
5236c819 2372
a85d7ed0
NC		 2373 h = NULL;
2374 sym = NULL;
2375 sec = NULL;
b34976b6 2376 unresolved_reloc = FALSE;
a85d7ed0
NC		 2377 if (r_symndx < symtab_hdr->sh_info)
2378 {
2379 sym = local_syms + r_symndx;
2380 sec = local_sections[r_symndx];
470b557a
AK		 2381 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2382 {
2383 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2384 if (local_plt == NULL)
2385 return FALSE;
2386
2387 /* Address of the PLT slot. */
2388 relocation = (htab->elf.iplt->output_section->vma
2389 + htab->elf.iplt->output_offset
2390 + local_plt[r_symndx].plt.offset);
2391
2392 switch (r_type)
2393 {
31db78f6
AK		 2394 case R_390_PLTOFF16:
2395 case R_390_PLTOFF32:
2396 relocation -= htab->elf.sgot->output_section->vma;
2397 break;
470b557a
AK		 2398 case R_390_GOTPLT12:
2399 case R_390_GOTPLT16:
2400 case R_390_GOTPLT20:
2401 case R_390_GOTPLT32:
2402 case R_390_GOTPLTENT:
2403 case R_390_GOT12:
2404 case R_390_GOT16:
2405 case R_390_GOT20:
2406 case R_390_GOT32:
2407 case R_390_GOTENT:
2408 {
2409 /* Write the PLT slot address into the GOT slot. */
2410 bfd_put_32 (output_bfd, relocation,
2411 htab->elf.sgot->contents +
2412 local_got_offsets[r_symndx]);
2413 relocation = (local_got_offsets[r_symndx] +
2414 htab->elf.sgot->output_offset);
2415
2416 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2417 relocation += htab->elf.sgot->output_section->vma;
2418 break;
2419 }
2420 default:
2421 break;
2422 }
2423 /* The output section is needed later in
2424 finish_dynamic_section when creating the dynamic
2425 relocation. */
2426 local_plt[r_symndx].sec = sec;
2427 goto do_relocation;
2428 }
2429 else
2430 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2431 }
2432 else
2433 {
560e09e9 2434 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2435 bfd_boolean ignored ATTRIBUTE_UNUSED;
ec338859 2436
b2a8e766
AM		 2437 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2438 r_symndx, symtab_hdr, sym_hashes,
2439 h, sec, relocation,
62d887d4 2440 unresolved_reloc, warned, ignored);
a85d7ed0 2441 }
ec338859 2442
dbaa2011 2443 if (sec != NULL && discarded_section (sec))
e4067dbb 2444 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2445 rel, 1, relend, howto, 0, contents);
ab96bf03 2446
0e1862bb 2447 if (bfd_link_relocatable (info))
ab96bf03
AM		 2448 continue;
2449
a85d7ed0
NC		 2450 switch (r_type)
2451 {
5236c819
MS		 2452 case R_390_GOTPLT12:
2453 case R_390_GOTPLT16:
bd1ea41b 2454 case R_390_GOTPLT20:
5236c819
MS		 2455 case R_390_GOTPLT32:
2456 case R_390_GOTPLTENT:
2457 /* There are three cases for a GOTPLT relocation. 1) The
2458 relocation is against the jump slot entry of a plt that
2459 will get emitted to the output file. 2) The relocation
2460 is against the jump slot of a plt entry that has been
2461 removed. elf_s390_adjust_gotplt has created a GOT entry
2462 as replacement. 3) The relocation is against a local symbol.
2463 Cases 2) and 3) are the same as the GOT relocation code
2464 so we just have to test for case 1 and fall through for
2465 the other two. */
2466 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2467 {
2468 bfd_vma plt_index;
2469
470b557a
AK		 2470 if (s390_is_ifunc_symbol_p (h))
2471 {
2472 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2473 relocation = (plt_index * GOT_ENTRY_SIZE +
2474 htab->elf.igotplt->output_offset);
2475 if (r_type == R_390_GOTPLTENT)
2476 relocation += htab->elf.igotplt->output_section->vma;
2477 }
2478 else
2479 {
2480 /* Calc. index no.
2481 Current offset - size first entry / entry size. */
2482 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2483 PLT_ENTRY_SIZE;
2484
2485 /* Offset in GOT is PLT index plus GOT headers(3)
2486 times 4, addr & GOT addr. */
2487 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2488 if (r_type == R_390_GOTPLTENT)
2489 relocation += htab->elf.sgot->output_section->vma;
2490 }
5236c819
MS		 2491 unresolved_reloc = FALSE;
2492
5236c819
MS		 2493 }
2494 /* Fall through. */
2495
26e41594
AM		 2496 case R_390_GOT12:
2497 case R_390_GOT16:
bd1ea41b 2498 case R_390_GOT20:
26e41594 2499 case R_390_GOT32:
befc3abb 2500 case R_390_GOTENT:
26e41594
AM		 2501 /* Relocation is to the entry for this symbol in the global
2502 offset table. */
470b557a 2503 if (base_got == NULL)
0451c93c 2504 abort ();
ec338859 2505
26e41594
AM		 2506 if (h != NULL)
2507 {
b34976b6 2508 bfd_boolean dyn;
ec338859 2509
26e41594 2510 off = h->got.offset;
0451c93c 2511 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2512
2513 if (s390_is_ifunc_symbol_p (h))
2514 {
2515 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2516 if (off == (bfd_vma)-1)
2517 {
2518 /* No explicit GOT usage so redirect to the
2519 got.iplt slot. */
2520 base_got = htab->elf.igotplt;
2521 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2522 }
2523 else
2524 {
2525 /* Explicit GOT slots must contain the address
2526 of the PLT slot. This will be handled in
2527 finish_dynamic_symbol. */
2528 }
2529 }
0e1862bb
L		 2530 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2531 bfd_link_pic (info),
2532 h)
2533 || (bfd_link_pic (info)
470b557a
AK		 2534 && SYMBOL_REFERENCES_LOCAL (info, h))
2535 || (ELF_ST_VISIBILITY (h->other)
2536 && h->root.type == bfd_link_hash_undefweak))
2537
26e41594
AM		 2538 {
2539 /* This is actually a static link, or it is a
2540 -Bsymbolic link and the symbol is defined
2541 locally, or the symbol was forced to be local
2542 because of a version file. We must initialize
2543 this entry in the global offset table. Since the
2544 offset must always be a multiple of 2, we use the
2545 least significant bit to record whether we have
2546 initialized it already.
2547
2548 When doing a dynamic link, we create a .rel.got
2549 relocation entry to initialize the value. This
2550 is done in the finish_dynamic_symbol routine. */
2551 if ((off & 1) != 0)
2552 off &= ~1;
2553 else
2554 {
a85d7ed0 2555 bfd_put_32 (output_bfd, relocation,
470b557a 2556 base_got->contents + off);
26e41594
AM		 2557 h->got.offset |= 1;
2558 }
a63cc5f7
AK		 2559
2560 if ((h->def_regular
0e1862bb 2561 && bfd_link_pic (info)
a63cc5f7
AK		 2562 && SYMBOL_REFERENCES_LOCAL (info, h))
2563 /* lrl rx,sym@GOTENT -> larl rx, sym */
2564 && ((r_type == R_390_GOTENT
2565 && (bfd_get_16 (input_bfd,
2566 contents + rel->r_offset - 2)
2567 & 0xff0f) == 0xc40d)
2568 /* ly rx, sym@GOT(r12) -> larl rx, sym */
2569 || (r_type == R_390_GOT20
2570 && (bfd_get_32 (input_bfd,
2571 contents + rel->r_offset - 2)
2572 & 0xff00f000) == 0xe300c000
2573 && bfd_get_8 (input_bfd,
2574 contents + rel->r_offset + 3) == 0x58)))
2575 {
2576 unsigned short new_insn =
2577 (0xc000 | (bfd_get_8 (input_bfd,
2578 contents + rel->r_offset - 1) & 0xf0));
2579 bfd_put_16 (output_bfd, new_insn,
2580 contents + rel->r_offset - 2);
2581 r_type = R_390_PC32DBL;
2582 rel->r_addend = 2;
2583 howto = elf_howto_table + r_type;
2584 relocation = h->root.u.def.value
2585 + h->root.u.def.section->output_section->vma
2586 + h->root.u.def.section->output_offset;
2587 goto do_relocation;
2588 }
26e41594 2589 }
0451c93c 2590 else
b34976b6 2591 unresolved_reloc = FALSE;
26e41594
AM		 2592 }
2593 else
2594 {
0451c93c
MS		 2595 if (local_got_offsets == NULL)
2596 abort ();
a85d7ed0 2597
26e41594 2598 off = local_got_offsets[r_symndx];
a85d7ed0 2599
26e41594
AM		 2600 /* The offset must always be a multiple of 4. We use
2601 the least significant bit to record whether we have
2602 already generated the necessary reloc. */
2603 if ((off & 1) != 0)
2604 off &= ~1;
2605 else
2606 {
2607 bfd_put_32 (output_bfd, relocation,
f41345a7 2608 htab->elf.sgot->contents + off);
a85d7ed0 2609
0e1862bb 2610 if (bfd_link_pic (info))
26e41594
AM		 2611 {
2612 asection *srelgot;
2613 Elf_Internal_Rela outrel;
947216bf 2614 bfd_byte *loc;
a85d7ed0 2615
f41345a7 2616 srelgot = htab->elf.srelgot;
0451c93c
MS		 2617 if (srelgot == NULL)
2618 abort ();
a85d7ed0 2619
f41345a7
AK		 2620 outrel.r_offset = (htab->elf.sgot->output_section->vma
2621 + htab->elf.sgot->output_offset
26e41594
AM		 2622 + off);
2623 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2624 outrel.r_addend = relocation;
947216bf
AM		 2625 loc = srelgot->contents;
2626 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
26e41594
AM		 2627 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2628 }
a85d7ed0 2629
26e41594
AM		 2630 local_got_offsets[r_symndx] |= 1;
2631 }
2632 }
a85d7ed0 2633
0451c93c
MS		 2634 if (off >= (bfd_vma) -2)
2635 abort ();
a85d7ed0 2636
470b557a 2637 relocation = base_got->output_offset + off;
befc3abb 2638
ae9a127f
NC		 2639 /* For @GOTENT the relocation is against the offset between
2640 the instruction and the symbols entry in the GOT and not
2641 between the start of the GOT and the symbols entry. We
2642 add the vma of the GOT to get the correct value. */
5236c819
MS		 2643 if ( r_type == R_390_GOTENT
2644 || r_type == R_390_GOTPLTENT)
470b557a 2645 relocation += base_got->output_section->vma;
befc3abb 2646
26e41594 2647 break;
dc810e39 2648
5236c819 2649 case R_390_GOTOFF16:
26e41594
AM		 2650 case R_390_GOTOFF32:
2651 /* Relocation is relative to the start of the global offset
2652 table. */
2653
01a53584
AK		 2654 if (h != NULL
2655 && s390_is_ifunc_symbol_p (h)
2656 && h->def_regular
2657 && !bfd_link_executable (info))
2658 {
2659 relocation = (htab->elf.iplt->output_section->vma
2660 + htab->elf.iplt->output_offset
2661 + h->plt.offset
2662 - htab->elf.sgot->output_section->vma);
2663 goto do_relocation;
2664 }
2665
26e41594
AM		 2666 /* Note that sgot->output_offset is not involved in this
2667 calculation. We always want the start of .got. If we
2668 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2669 permitted by the ABI, we might have to change this
2670 calculation. */
f41345a7 2671 relocation -= htab->elf.sgot->output_section->vma;
26e41594
AM		 2672 break;
2673
2674 case R_390_GOTPC:
befc3abb 2675 case R_390_GOTPCDBL:
26e41594 2676 /* Use global offset table as symbol value. */
f41345a7 2677 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2678 unresolved_reloc = FALSE;
26e41594 2679 break;
a85d7ed0 2680
fb798c50 2681 case R_390_PLT12DBL:
26e41594 2682 case R_390_PLT16DBL:
fb798c50 2683 case R_390_PLT24DBL:
26e41594
AM		 2684 case R_390_PLT32DBL:
2685 case R_390_PLT32:
2686 /* Relocation is to the entry for this symbol in the
2687 procedure linkage table. */
a85d7ed0 2688
26e41594
AM		 2689 /* Resolve a PLT32 reloc against a local symbol directly,
2690 without using the procedure linkage table. */
2691 if (h == NULL)
2692 break;
a85d7ed0 2693
26e41594 2694 if (h->plt.offset == (bfd_vma) -1
470b557a 2695 || (htab->elf.splt == NULL && htab->elf.iplt == NULL))
26e41594
AM		 2696 {
2697 /* We didn't make a PLT entry for this symbol. This
2698 happens when statically linking PIC code, or when
2699 using -Bsymbolic. */
2700 break;
2701 }
2702
470b557a
AK		 2703 if (s390_is_ifunc_symbol_p (h))
2704 relocation = (htab->elf.iplt->output_section->vma
2705 + htab->elf.iplt->output_offset
2706 + h->plt.offset);
2707 else
2708 relocation = (htab->elf.splt->output_section->vma
2709 + htab->elf.splt->output_offset
2710 + h->plt.offset);
b34976b6 2711 unresolved_reloc = FALSE;
26e41594 2712 break;
a85d7ed0 2713
5236c819
MS		 2714 case R_390_PLTOFF16:
2715 case R_390_PLTOFF32:
26e41594
AM		 2716 /* Relocation is to the entry for this symbol in the
2717 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2718
2719 /* For local symbols or if we didn't make a PLT entry for
2720 this symbol resolve the symbol directly. */
31db78f6 2721 if (h == NULL
5236c819 2722 || h->plt.offset == (bfd_vma) -1
31db78f6 2723 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2724 {
f41345a7 2725 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS		 2726 break;
2727 }
2728
470b557a
AK		 2729 if (s390_is_ifunc_symbol_p (h))
2730 relocation = (htab->elf.iplt->output_section->vma
2731 + htab->elf.iplt->output_offset
2732 + h->plt.offset
2733 - htab->elf.sgot->output_section->vma);
2734 else
2735 relocation = (htab->elf.splt->output_section->vma
2736 + htab->elf.splt->output_offset
2737 + h->plt.offset
2738 - htab->elf.sgot->output_section->vma);
5236c819 2739 unresolved_reloc = FALSE;
26e41594
AM		 2740 break;
2741
26e41594 2742 case R_390_PC16:
fb798c50 2743 case R_390_PC12DBL:
26e41594 2744 case R_390_PC16DBL:
fb798c50 2745 case R_390_PC24DBL:
26e41594
AM		 2746 case R_390_PC32DBL:
2747 case R_390_PC32:
99ba5125
AK		 2748 if (h != NULL
2749 && s390_is_ifunc_symbol_p (h)
2750 && h->def_regular
2751 && !bfd_link_executable (info))
2752 {
2753 /* This will not work our if the function does not
2754 happen to set up the GOT pointer for some other
2755 reason. 31 bit PLT entries require r12 to hold the
2756 GOT pointer.
2757 FIXME: Implement an errorcheck.
2758 NOTE: It will work when brasl is not available
2759 (e.g. with -m31 -march=g5) since a local function
2760 call then does use GOTOFF which implies r12 being set
2761 up. */
2762 relocation = (htab->elf.iplt->output_section->vma
2763 + htab->elf.iplt->output_offset
2764 + h ->plt.offset);
2765 goto do_relocation;
2766 }
1a0670f3 2767 /* Fall through. */
99ba5125
AK		 2768
2769 case R_390_8:
2770 case R_390_16:
2771 case R_390_32:
470b557a
AK		 2772 if (h != NULL
2773 && s390_is_ifunc_symbol_p (h)
2774 && h->def_regular)
2775 {
0e1862bb 2776 if (!bfd_link_pic (info) || !h->non_got_ref)
470b557a
AK		 2777 {
2778 /* For a non-shared object STT_GNU_IFUNC symbol must
2779 go through PLT. */
2780 relocation = (htab->elf.iplt->output_section->vma
2781 + htab->elf.iplt->output_offset
2782 + h ->plt.offset);
2783 goto do_relocation;
2784 }
2785 else
2786 {
2787 /* For shared objects a runtime relocation is needed. */
2788
2789 Elf_Internal_Rela outrel;
2790 asection *sreloc;
2791
2792 /* Need a dynamic relocation to get the real function
2793 address. */
2794 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2795 info,
2796 input_section,
2797 rel->r_offset);
2798 if (outrel.r_offset == (bfd_vma) -1
2799 || outrel.r_offset == (bfd_vma) -2)
2800 abort ();
2801
2802 outrel.r_offset += (input_section->output_section->vma
2803 + input_section->output_offset);
2804
2805 if (h->dynindx == -1
2806 || h->forced_local
0e1862bb 2807 || bfd_link_executable (info))
470b557a
AK		 2808 {
2809 /* This symbol is resolved locally. */
2810 outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
2811 outrel.r_addend = (h->root.u.def.value
2812 + h->root.u.def.section->output_section->vma
2813 + h->root.u.def.section->output_offset);
2814 }
2815 else
2816 {
2817 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2818 outrel.r_addend = 0;
2819 }
2820
2821 sreloc = htab->elf.irelifunc;
2822 elf_append_rela (output_bfd, sreloc, &outrel);
2823
2824 /* If this reloc is against an external symbol, we
2825 do not want to fiddle with the addend. Otherwise,
2826 we need to include the symbol value so that it
2827 becomes an addend for the dynamic reloc. For an
2828 internal symbol, we have updated addend. */
2829 continue;
2830 }
2831 }
2832
b1e24c02 2833 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2834 break;
2835
0e1862bb 2836 if ((bfd_link_pic (info)
82058a73
MS		 2837 && (h == NULL
2838 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2839 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2840 && ((r_type != R_390_PC16
fb798c50 2841 && r_type != R_390_PC12DBL
0451c93c 2842 && r_type != R_390_PC16DBL
fb798c50 2843 && r_type != R_390_PC24DBL
befc3abb 2844 && r_type != R_390_PC32DBL
0451c93c 2845 && r_type != R_390_PC32)
8c21ca21 2846 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810 2847 || (ELIMINATE_COPY_RELOCS
0e1862bb 2848 && !bfd_link_pic (info)
0451c93c
MS		 2849 && h != NULL
2850 && h->dynindx != -1
f5385ebf
AM		 2851 && !h->non_got_ref
2852 && ((h->def_dynamic
2853 && !h->def_regular)
0451c93c
MS		 2854 || h->root.type == bfd_link_hash_undefweak
2855 || h->root.type == bfd_link_hash_undefined)))
26e41594
AM		 2856 {
2857 Elf_Internal_Rela outrel;
2858 bfd_boolean skip, relocate;
0451c93c 2859 asection *sreloc;
947216bf 2860 bfd_byte *loc;
ec338859 2861
0451c93c
MS		 2862 /* When generating a shared object, these relocations
2863 are copied into the output file to be resolved at run
2864 time. */
ec338859 2865
26e41594
AM		 2866 skip = FALSE;
2867 relocate = FALSE;
ec338859 2868
c629eae0
JJ		 2869 outrel.r_offset =
2870 _bfd_elf_section_offset (output_bfd, info, input_section,
2871 rel->r_offset);
2872 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2873 skip = TRUE;
0bb2d96a 2874 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2875 skip = TRUE, relocate = TRUE;
26e41594
AM		 2876 outrel.r_offset += (input_section->output_section->vma
2877 + input_section->output_offset);
ec338859 2878
26e41594 2879 if (skip)
0bb2d96a 2880 memset (&outrel, 0, sizeof outrel);
26e41594 2881 else if (h != NULL
0451c93c
MS		 2882 && h->dynindx != -1
2883 && (r_type == R_390_PC16
fb798c50 2884 || r_type == R_390_PC12DBL
0451c93c 2885 || r_type == R_390_PC16DBL
fb798c50 2886 || r_type == R_390_PC24DBL
befc3abb 2887 || r_type == R_390_PC32DBL
0451c93c 2888 || r_type == R_390_PC32
0e1862bb 2889 || !bfd_link_pic (info)
8c21ca21 2890 || !SYMBOLIC_BIND (info, h)
f5385ebf 2891 || !h->def_regular))
26e41594
AM		 2892 {
2893 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
27018c3f 2894 outrel.r_addend = rel->r_addend;
26e41594
AM		 2895 }
2896 else
2897 {
0451c93c 2898 /* This symbol is local, or marked to become local. */
90ced0dd 2899 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2900 if (r_type == R_390_32)
2901 {
2902 relocate = TRUE;
2903 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2904 }
2905 else
2906 {
2907 long sindx;
2908
90ced0dd 2909 if (bfd_is_abs_section (sec))
b5727d75
MS		 2910 sindx = 0;
2911 else if (sec == NULL || sec->owner == NULL)
2912 {
2913 bfd_set_error(bfd_error_bad_value);
2914 return FALSE;
2915 }
2916 else
2917 {
2918 asection *osec;
2919
2920 osec = sec->output_section;
2921 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2922 if (sindx == 0)
2923 {
2924 osec = htab->elf.text_index_section;
2925 sindx = elf_section_data (osec)->dynindx;
2926 }
2927 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2928
2929 /* We are turning this relocation into one
2930 against a section symbol, so subtract out
2931 the output section's address but not the
2932 offset of the input section in the output
2933 section. */
90ced0dd 2934 outrel.r_addend -= osec->vma;
b5727d75
MS		 2935 }
2936 outrel.r_info = ELF32_R_INFO (sindx, r_type);
b5727d75 2937 }
26e41594 2938 }
ec338859 2939
0451c93c
MS		 2940 sreloc = elf_section_data (input_section)->sreloc;
2941 if (sreloc == NULL)
2942 abort ();
ec338859 2943
947216bf
AM		 2944 loc = sreloc->contents;
2945 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 2946 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
ec338859 2947
26e41594
AM		 2948 /* If this reloc is against an external symbol, we do
2949 not want to fiddle with the addend. Otherwise, we
2950 need to include the symbol value so that it becomes
2951 an addend for the dynamic reloc. */
2952 if (! relocate)
2953 continue;
2954 }
0451c93c 2955 break;
ec338859 2956
69fc87f1
MS		 2957 /* Relocations for tls literal pool entries. */
2958 case R_390_TLS_IE32:
0e1862bb 2959 if (bfd_link_pic (info))
69fc87f1
MS		 2960 {
2961 Elf_Internal_Rela outrel;
2962 asection *sreloc;
2963 bfd_byte *loc;
2964
2965 outrel.r_offset = rel->r_offset
2966 + input_section->output_section->vma
2967 + input_section->output_offset;
2968 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2969 sreloc = elf_section_data (input_section)->sreloc;
2970 if (sreloc == NULL)
2971 abort ();
2972 loc = sreloc->contents;
2973 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2974 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2975 }
ae9a127f 2976 /* Fall through. */
69fc87f1
MS		 2977
2978 case R_390_TLS_GD32:
2979 case R_390_TLS_GOTIE32:
2980 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2981 tls_type = GOT_UNKNOWN;
2982 if (h == NULL && local_got_offsets)
2983 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2984 else if (h != NULL)
2985 {
2986 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb
L		 2987 if (!bfd_link_pic (info)
2988 && h->dynindx == -1
2989 && tls_type >= GOT_TLS_IE)
69fc87f1
MS		 2990 r_type = R_390_TLS_LE32;
2991 }
2992 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2993 r_type = R_390_TLS_IE32;
2994
2995 if (r_type == R_390_TLS_LE32)
2996 {
2997 /* This relocation gets optimized away by the local exec
2998 access optimization. */
2999 BFD_ASSERT (! unresolved_reloc);
3000 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3001 contents + rel->r_offset);
3002 continue;
3003 }
3004
f41345a7 3005 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3006 abort ();
3007
3008 if (h != NULL)
3009 off = h->got.offset;
3010 else
3011 {
3012 if (local_got_offsets == NULL)
3013 abort ();
3014
3015 off = local_got_offsets[r_symndx];
3016 }
3017
3018 emit_tls_relocs:
3019
3020 if ((off & 1) != 0)
3021 off &= ~1;
26e41594 3022 else
69fc87f1
MS		 3023 {
3024 Elf_Internal_Rela outrel;
3025 bfd_byte *loc;
3026 int dr_type, indx;
3027
f41345a7 3028 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 3029 abort ();
3030
f41345a7
AK		 3031 outrel.r_offset = (htab->elf.sgot->output_section->vma
3032 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 3033
3034 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3035 if (r_type == R_390_TLS_GD32)
3036 dr_type = R_390_TLS_DTPMOD;
3037 else
3038 dr_type = R_390_TLS_TPOFF;
3039 if (dr_type == R_390_TLS_TPOFF && indx == 0)
3040 outrel.r_addend = relocation - dtpoff_base (info);
3041 else
3042 outrel.r_addend = 0;
3043 outrel.r_info = ELF32_R_INFO (indx, dr_type);
f41345a7
AK		 3044 loc = htab->elf.srelgot->contents;
3045 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3046 * sizeof (Elf32_External_Rela);
3047 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3048
3049 if (r_type == R_390_TLS_GD32)
3050 {
3051 if (indx == 0)
3052 {
26e41594 3053 BFD_ASSERT (! unresolved_reloc);
69fc87f1
MS		 3054 bfd_put_32 (output_bfd,
3055 relocation - dtpoff_base (info),
f41345a7 3056 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3057 }
3058 else
3059 {
3060 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
3061 outrel.r_offset += GOT_ENTRY_SIZE;
3062 outrel.r_addend = 0;
f41345a7 3063 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 3064 loc += sizeof (Elf32_External_Rela);
3065 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3066 }
3067 }
3068
3069 if (h != NULL)
3070 h->got.offset |= 1;
3071 else
3072 local_got_offsets[r_symndx] |= 1;
3073 }
3074
3075 if (off >= (bfd_vma) -2)
3076 abort ();
3077 if (r_type == ELF32_R_TYPE (rel->r_info))
3078 {
f41345a7 3079 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3080 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
f41345a7 3081 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3082 unresolved_reloc = FALSE;
3083 }
3084 else
3085 {
f41345a7 3086 bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 3087 contents + rel->r_offset);
3088 continue;
3089 }
3090 break;
3091
3092 case R_390_TLS_GOTIE12:
bd1ea41b 3093 case R_390_TLS_GOTIE20:
69fc87f1
MS		 3094 case R_390_TLS_IEENT:
3095 if (h == NULL)
3096 {
3097 if (local_got_offsets == NULL)
3098 abort();
3099 off = local_got_offsets[r_symndx];
0e1862bb 3100 if (bfd_link_pic (info))
69fc87f1
MS		 3101 goto emit_tls_relocs;
3102 }
3103 else
3104 {
3105 off = h->got.offset;
3106 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb
L		 3107 if (bfd_link_pic (info)
3108 || h->dynindx != -1
3109 || tls_type < GOT_TLS_IE)
69fc87f1
MS		 3110 goto emit_tls_relocs;
3111 }
3112
f41345a7 3113 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3114 abort ();
3115
3116 BFD_ASSERT (! unresolved_reloc);
3117 bfd_put_32 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 3118 htab->elf.sgot->contents + off);
3119 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3120 if (r_type == R_390_TLS_IEENT)
f41345a7 3121 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3122 unresolved_reloc = FALSE;
3123 break;
3124
3125 case R_390_TLS_LDM32:
0e1862bb 3126 if (! bfd_link_pic (info))
69fc87f1
MS		 3127 /* The literal pool entry this relocation refers to gets ignored
3128 by the optimized code of the local exec model. Do nothing
3129 and the value will turn out zero. */
3130 continue;
3131
f41345a7 3132 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3133 abort ();
3134
3135 off = htab->tls_ldm_got.offset;
3136 if (off & 1)
3137 off &= ~1;
3138 else
3139 {
3140 Elf_Internal_Rela outrel;
3141 bfd_byte *loc;
3142
f41345a7 3143 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 3144 abort ();
3145
f41345a7
AK		 3146 outrel.r_offset = (htab->elf.sgot->output_section->vma
3147 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 3148
3149 bfd_put_32 (output_bfd, 0,
f41345a7 3150 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3151 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
3152 outrel.r_addend = 0;
f41345a7
AK		 3153 loc = htab->elf.srelgot->contents;
3154 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3155 * sizeof (Elf32_External_Rela);
3156 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3157 htab->tls_ldm_got.offset |= 1;
3158 }
f41345a7 3159 relocation = htab->elf.sgot->output_offset + off;
26e41594 3160 unresolved_reloc = FALSE;
69fc87f1
MS		 3161 break;
3162
3163 case R_390_TLS_LE32:
3cbc1e5e 3164 if (bfd_link_dll (info))
69fc87f1
MS		 3165 {
3166 /* Linking a shared library with non-fpic code requires
3167 a R_390_TLS_TPOFF relocation. */
3168 Elf_Internal_Rela outrel;
3169 asection *sreloc;
3170 bfd_byte *loc;
3171 int indx;
3172
3173 outrel.r_offset = rel->r_offset
3174 + input_section->output_section->vma
3175 + input_section->output_offset;
3176 if (h != NULL && h->dynindx != -1)
3177 indx = h->dynindx;
3178 else
3179 indx = 0;
3180 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
3181 if (indx == 0)
3182 outrel.r_addend = relocation - dtpoff_base (info);
3183 else
3184 outrel.r_addend = 0;
3185 sreloc = elf_section_data (input_section)->sreloc;
3186 if (sreloc == NULL)
3187 abort ();
3188 loc = sreloc->contents;
3189 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3190 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3191 }
3192 else
3193 {
3194 BFD_ASSERT (! unresolved_reloc);
3195 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3196 contents + rel->r_offset);
3197 }
3198 continue;
3199
3200 case R_390_TLS_LDO32:
0e1862bb 3201 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 3202 relocation -= dtpoff_base (info);
3203 else
3204 /* When converting LDO to LE, we must negate. */
3205 relocation = -tpoff (info, relocation);
3206 break;
3207
3208 /* Relocations for tls instructions. */
3209 case R_390_TLS_LOAD:
3210 case R_390_TLS_GDCALL:
3211 case R_390_TLS_LDCALL:
3212 tls_type = GOT_UNKNOWN;
3213 if (h == NULL && local_got_offsets)
3214 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3215 else if (h != NULL)
3216 tls_type = elf_s390_hash_entry(h)->tls_type;
3217
3218 if (tls_type == GOT_TLS_GD)
3219 continue;
3220
3221 if (r_type == R_390_TLS_LOAD)
3222 {
0e1862bb 3223 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3224 {
3225 /* IE->LE transition. Four valid cases:
3226 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
3227 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
3228 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
3229 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3230 unsigned int insn, ry;
3231
3232 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3233 ry = 0;
3234 if ((insn & 0xff00f000) == 0x58000000)
3235 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
3236 ry = (insn & 0x000f0000);
3237 else if ((insn & 0xff0f0000) == 0x58000000)
3238 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
3239 ry = (insn & 0x0000f000) << 4;
3240 else if ((insn & 0xff00f000) == 0x5800c000)
3241 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
3242 ry = (insn & 0x000f0000);
3243 else if ((insn & 0xff0f0000) == 0x580c0000)
3244 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3245 ry = (insn & 0x0000f000) << 4;
3246 else
3247 invalid_tls_insn (input_bfd, input_section, rel);
3248 insn = 0x18000700 | (insn & 0x00f00000) | ry;
3249 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3250 }
3251 }
3252 else if (r_type == R_390_TLS_GDCALL)
3253 {
3254 unsigned int insn;
3255
3256 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3257 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 3258 (insn & 0xffff0000) != 0xc0e50000 &&
3259 (insn & 0xff000000) != 0x0d000000)
69fc87f1 3260 invalid_tls_insn (input_bfd, input_section, rel);
0e1862bb 3261 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
77df2968 3262 {
d0ddfe27
AK		 3263 if ((insn & 0xff000000) == 0x0d000000)
3264 {
3265 /* GD->LE transition.
3266 basr rx, ry -> nopr r7 */
3267 insn = 0x07070000 | (insn & 0xffff);
3268 }
3269 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 3270 {
3271 /* GD->LE transition.
3272 bas %r14,0(%rx,%r13) -> bc 0,0 */
3273 insn = 0x47000000;
3274 }
3275 else
3276 {
3277 /* GD->LE transition.
d0ddfe27 3278 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 3279 insn = 0xc0040000;
3280 bfd_put_16 (output_bfd, 0x0000,
3281 contents + rel->r_offset + 4);
3282 }
3283 }
69fc87f1 3284 else
77df2968 3285 {
d0ddfe27
AK		 3286 /* If basr is used in the pic case to invoke
3287 _tls_get_offset, something went wrong before. */
3288 if ((insn & 0xff000000) == 0x0d000000)
3289 invalid_tls_insn (input_bfd, input_section, rel);
3290
77df2968
MS		 3291 if ((insn & 0xff000000) == 0x4d000000)
3292 {
3293 /* GD->IE transition.
3294 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3295 insn = 0x5822c000;
3296 }
3297 else
3298 {
3299 /* GD->IE transition.
3300 brasl %r14,__tls_get_addr@plt ->
3301 l %r2,0(%r2,%r12) ; bcr 0,0 */
3302 insn = 0x5822c000;
3303 bfd_put_16 (output_bfd, 0x0700,
3304 contents + rel->r_offset + 4);
3305 }
3306 }
69fc87f1
MS		 3307 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3308 }
3309 else if (r_type == R_390_TLS_LDCALL)
3310 {
0e1862bb 3311 if (!bfd_link_pic (info))
69fc87f1
MS		 3312 {
3313 unsigned int insn;
3314
3315 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3316 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 3317 (insn & 0xffff0000) != 0xc0e50000 &&
3318 (insn & 0xff000000) != 0x0d000000)
69fc87f1 3319 invalid_tls_insn (input_bfd, input_section, rel);
d0ddfe27
AK		 3320
3321 if ((insn & 0xff000000) == 0x0d000000)
3322 {
3323 /* LD->LE transition.
3324 basr rx, ry -> nopr r7 */
3325 insn = 0x07070000 | (insn & 0xffff);
3326 }
3327 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 3328 {
3329 /* LD->LE transition.
3330 bas %r14,0(%rx,%r13) -> bc 0,0 */
3331 insn = 0x47000000;
3332 }
3333 else
3334 {
3335 /* LD->LE transition.
d0ddfe27 3336 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 3337 insn = 0xc0040000;
3338 bfd_put_16 (output_bfd, 0x0000,
3339 contents + rel->r_offset + 4);
3340 }
69fc87f1
MS		 3341 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3342 }
3343 }
3344 continue;
3345
0451c93c
MS		 3346 default:
3347 break;
3348 }
ec338859 3349
239e1f3a
AM		 3350 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3351 because such sections are not SEC_ALLOC and thus ld.so will
3352 not process them. */
0451c93c 3353 if (unresolved_reloc
239e1f3a 3354 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3355 && h->def_dynamic)
3356 && _bfd_elf_section_offset (output_bfd, info, input_section,
3357 rel->r_offset) != (bfd_vma) -1)
4eca0228 3358 _bfd_error_handler
695344c0 3359 /* xgettext:c-format */
843fe662 3360 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3361 input_bfd,
3362 input_section,
0451c93c 3363 (long) rel->r_offset,
843fe662 3364 howto->name,
0451c93c 3365 h->root.root.string);
ec338859 3366
470b557a
AK		 3367 do_relocation:
3368
fb798c50
AK		 3369 /* When applying a 24 bit reloc we need to start one byte
3370 earlier. Otherwise the 32 bit get/put bfd operations might
3371 access a byte after the actual section. */
3372 if (r_type == R_390_PC24DBL
3373 || r_type == R_390_PLT24DBL)
3374 rel->r_offset--;
3375
bd1ea41b
MS		 3376 if (r_type == R_390_20
3377 || r_type == R_390_GOT20
3378 || r_type == R_390_GOTPLT20
3379 || r_type == R_390_TLS_GOTIE20)
3380 {
3381 relocation += rel->r_addend;
3382 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3383 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3384 contents, rel->r_offset,
3385 relocation, 0);
3386 }
3387 else
3388 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3389 contents, rel->r_offset,
3390 relocation, rel->r_addend);
ec338859 3391
a85d7ed0
NC		 3392 if (r != bfd_reloc_ok)
3393 {
0451c93c 3394 const char *name;
ec338859 3395
0451c93c
MS		 3396 if (h != NULL)
3397 name = h->root.root.string;
3398 else
a85d7ed0 3399 {
0451c93c
MS		 3400 name = bfd_elf_string_from_elf_section (input_bfd,
3401 symtab_hdr->sh_link,
3402 sym->st_name);
3403 if (name == NULL)
b34976b6 3404 return FALSE;
0451c93c
MS		 3405 if (*name == '\0')
3406 name = bfd_section_name (input_bfd, sec);
3407 }
ec338859 3408
0451c93c 3409 if (r == bfd_reloc_overflow)
1a72702b
AM		 3410 (*info->callbacks->reloc_overflow)
3411 (info, (h ? &h->root : NULL), name, howto->name,
3412 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
0451c93c
MS		 3413 else
3414 {
4eca0228 3415 _bfd_error_handler
695344c0 3416 /* xgettext:c-format */
d003868e
AM		 3417 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3418 input_bfd, input_section,
0451c93c 3419 (long) rel->r_offset, name, (int) r);
b34976b6 3420 return FALSE;
a85d7ed0
NC		 3421 }
3422 }
3423 }
ec338859 3424
b34976b6 3425 return TRUE;
a85d7ed0
NC		 3426}
3427
470b557a
AK		 3428/* Generate the PLT slots together with the dynamic relocations needed
3429 for IFUNC symbols. */
3430
3431static void
3432elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3433 struct bfd_link_info *info,
3434 struct elf_link_hash_entry *h,
3435 struct elf_s390_link_hash_table *htab,
3436 bfd_vma iplt_offset,
3437 bfd_vma resolver_address)
3438{
3439 bfd_vma iplt_index;
3440 bfd_vma got_offset;
3441 bfd_vma igotiplt_offset;
3442 Elf_Internal_Rela rela;
3443 bfd_byte *loc;
3444 asection *plt, *gotplt, *relplt;
3445 bfd_vma relative_offset;
3446
3447 if (htab->elf.iplt == NULL
3448 || htab->elf.igotplt == NULL
3449 || htab->elf.irelplt == NULL)
3450 abort ();
3451
3452 gotplt = htab->elf.igotplt;
3453 relplt = htab->elf.irelplt;
3454
3455 /* Index of the PLT slot within iplt section. */
3456 iplt_index = iplt_offset / PLT_ENTRY_SIZE;
3457 plt = htab->elf.iplt;
3458 /* Offset into the igot.plt section. */
3459 igotiplt_offset = iplt_index * GOT_ENTRY_SIZE;
3460 /* Offset into the got section. */
3461 got_offset = igotiplt_offset + gotplt->output_offset;
3462
3463 /* S390 uses halfwords for relative branch calc! */
3464 relative_offset = - (plt->output_offset +
3465 (PLT_ENTRY_SIZE * iplt_index) + 18) / 2;
ceada896
AA		 3466 /* If offset is > 32768, branch to a previous branch
3467 390 can only handle +-64 K jumps. */
470b557a
AK		 3468 if ( -32768 > (int) relative_offset )
3469 relative_offset
3470 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3471
3472 /* Fill in the entry in the procedure linkage table. */
0e1862bb 3473 if (!bfd_link_pic (info))
470b557a
AK		 3474 {
3475 memcpy (plt->contents + iplt_offset, elf_s390_plt_entry,
3476 PLT_ENTRY_SIZE);
3477
3478 /* Adjust jump to the first plt entry. */
3479 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3480 plt->contents + iplt_offset + 20);
3481
3482 /* Push the GOT offset field. */
3483 bfd_put_32 (output_bfd,
3484 (gotplt->output_section->vma
3485 + got_offset),
3486 plt->contents + iplt_offset + 24);
3487 }
3488 else if (got_offset < 4096)
3489 {
3490 /* The GOT offset is small enough to be used directly as
3491 displacement. */
3492 memcpy (plt->contents + iplt_offset,
3493 elf_s390_plt_pic12_entry,
3494 PLT_ENTRY_SIZE);
3495
3496 /* Put in the GOT offset as displacement value. The 0xc000
3497 value comes from the first word of the plt entry. Look
3498 at the elf_s390_plt_pic16_entry content. */
3499 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3500 plt->contents + iplt_offset + 2);
3501
3502 /* Adjust the jump to the first plt entry. */
3503 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3504 plt->contents + iplt_offset + 20);
3505 }
3506 else if (got_offset < 32768)
3507 {
3508 /* The GOT offset is too big for a displacement but small
3509 enough to be a signed 16 bit immediate value as it can be
3510 used in an lhi instruction. */
3511 memcpy (plt->contents + iplt_offset,
3512 elf_s390_plt_pic16_entry,
3513 PLT_ENTRY_SIZE);
3514
3515 /* Put in the GOT offset for the lhi instruction. */
3516 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3517 plt->contents + iplt_offset + 2);
3518
3519 /* Adjust the jump to the first plt entry. */
3520 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3521 plt->contents + iplt_offset + 20);
3522 }
3523 else
3524 {
3525 memcpy (plt->contents + iplt_offset,
3526 elf_s390_plt_pic_entry,
3527 PLT_ENTRY_SIZE);
3528
3529 /* Adjust the jump to the first plt entry. */
3530 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3531 plt->contents + iplt_offset + 20);
3532
3533 /* Push the GOT offset field. */
3534 bfd_put_32 (output_bfd, got_offset,
3535 plt->contents + iplt_offset + 24);
3536 }
3537 /* Insert offset into reloc. table here. */
3538 bfd_put_32 (output_bfd, relplt->output_offset +
3539 iplt_index * RELA_ENTRY_SIZE,
3540 plt->contents + iplt_offset + 28);
3541
3542 /* Fill in the entry in the global offset table.
3543 Points to instruction after GOT offset. */
3544 bfd_put_32 (output_bfd,
3545 (plt->output_section->vma
3546 + plt->output_offset
3547 + iplt_offset
3548 + 12),
3549 gotplt->contents + igotiplt_offset);
3550
3551 /* Fill in the entry in the .rela.plt section. */
3552 rela.r_offset = gotplt->output_section->vma + got_offset;
3553
3554 if (!h
3555 || h->dynindx == -1
0e1862bb 3556 || ((bfd_link_executable (info)
470b557a
AK		 3557 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3558 && h->def_regular))
3559 {
3560 /* The symbol can be locally resolved. */
3561 rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
3562 rela.r_addend = resolver_address;
3563 }
3564 else
3565 {
3566 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3567 rela.r_addend = 0;
3568 }
3569
3570 loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE;
3571 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3572}
3573
a85d7ed0
NC		 3574/* Finish up dynamic symbol handling. We set the contents of various
3575 dynamic sections here. */
3576
b34976b6 3577static bfd_boolean
2c3fc389
NC		 3578elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3579 struct bfd_link_info *info,
3580 struct elf_link_hash_entry *h,
3581 Elf_Internal_Sym *sym)
a85d7ed0 3582{
0451c93c 3583 struct elf_s390_link_hash_table *htab;
470b557a 3584 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
ec338859 3585
0451c93c 3586 htab = elf_s390_hash_table (info);
ec338859 3587
a85d7ed0
NC		 3588 if (h->plt.offset != (bfd_vma) -1)
3589 {
0451c93c
MS		 3590 bfd_vma plt_index;
3591 bfd_vma got_offset;
a85d7ed0 3592 Elf_Internal_Rela rela;
947216bf 3593 bfd_byte *loc;
a85d7ed0 3594 bfd_vma relative_offset;
ec338859 3595
a85d7ed0 3596 /* This symbol has an entry in the procedure linkage table. Set
26e41594 3597 it up. */
0a511368 3598 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
0451c93c 3599 {
0a511368
AK		 3600 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3601 htab, h->plt.offset,
3602 eh->ifunc_resolver_address +
3603 eh->ifunc_resolver_section->output_offset +
3604 eh->ifunc_resolver_section->output_section->vma);
3605 /* Do not return yet. Handling of explicit GOT slots of
3606 IFUNC symbols is below. */
0451c93c 3607 }
a85d7ed0 3608 else
0451c93c 3609 {
470b557a
AK		 3610 if (h->dynindx == -1
3611 || htab->elf.splt == NULL
3612 || htab->elf.sgotplt == NULL
3613 || htab->elf.srelplt == NULL)
3614 abort ();
9aa17453 3615
470b557a
AK		 3616 /* Calc. index no.
3617 Current offset - size first entry / entry size. */
3618 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9aa17453 3619
470b557a
AK		 3620 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3621 addr & GOT addr. */
3622 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3623
470b557a
AK		 3624 /* S390 uses halfwords for relative branch calc! */
3625 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3626 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3627 /* If offset is > 32768, branch to a previous branch
3628 390 can only handle +-64 K jumps. */
3629 if ( -32768 > (int) relative_offset )
3630 relative_offset
3631 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
ec338859 3632
470b557a 3633 /* Fill in the entry in the procedure linkage table. */
0e1862bb 3634 if (!bfd_link_pic (info))
470b557a
AK		 3635 {
3636 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry,
3637 PLT_ENTRY_SIZE);
3638
3639 /* Adjust jump to the first plt entry. */
3640 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3641 htab->elf.splt->contents + h->plt.offset + 20);
3642
3643 /* Push the GOT offset field. */
3644 bfd_put_32 (output_bfd,
3645 (htab->elf.sgotplt->output_section->vma
3646 + htab->elf.sgotplt->output_offset
3647 + got_offset),
3648 htab->elf.splt->contents + h->plt.offset + 24);
3649 }
3650 else if (got_offset < 4096)
3651 {
3652 /* The GOT offset is small enough to be used directly as
3653 displacement. */
3654 memcpy (htab->elf.splt->contents + h->plt.offset,
3655 elf_s390_plt_pic12_entry,
3656 PLT_ENTRY_SIZE);
3657
3658 /* Put in the GOT offset as displacement value. The 0xc000
3659 value comes from the first word of the plt entry. Look
3b67f094 3660 at the elf_s390_plt_pic12_entry content. */
470b557a
AK		 3661 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3662 htab->elf.splt->contents + h->plt.offset + 2);
3663
3664 /* Adjust the jump to the first plt entry. */
3665 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3666 htab->elf.splt->contents + h->plt.offset + 20);
3667 }
3668 else if (got_offset < 32768)
3669 {
3670 /* The GOT offset is too big for a displacement but small
3671 enough to be a signed 16 bit immediate value as it can be
3672 used in an lhi instruction. */
3673 memcpy (htab->elf.splt->contents + h->plt.offset,
3674 elf_s390_plt_pic16_entry,
3675 PLT_ENTRY_SIZE);
3676
3677 /* Put in the GOT offset for the lhi instruction. */
3678 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3679 htab->elf.splt->contents + h->plt.offset + 2);
3680
3681 /* Adjust the jump to the first plt entry. */
3682 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3683 htab->elf.splt->contents + h->plt.offset + 20);
3684 }
3685 else
3686 {
3687 memcpy (htab->elf.splt->contents + h->plt.offset,
3688 elf_s390_plt_pic_entry,
3689 PLT_ENTRY_SIZE);
3690
3691 /* Adjust the jump to the first plt entry. */
3692 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3693 htab->elf.splt->contents + h->plt.offset + 20);
3694
3695 /* Push the GOT offset field. */
3696 bfd_put_32 (output_bfd, got_offset,
3697 htab->elf.splt->contents + h->plt.offset + 24);
3698 }
3699 /* Insert offset into reloc. table here. */
3700 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3701 htab->elf.splt->contents + h->plt.offset + 28);
3702
3703 /* Fill in the entry in the global offset table.
3704 Points to instruction after GOT offset. */
3705 bfd_put_32 (output_bfd,
3706 (htab->elf.splt->output_section->vma
3707 + htab->elf.splt->output_offset
3708 + h->plt.offset
3709 + 12),
3710 htab->elf.sgotplt->contents + got_offset);
3711
3712 /* Fill in the entry in the .rela.plt section. */
3713 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3714 + htab->elf.sgotplt->output_offset
3715 + got_offset);
3716 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3717 rela.r_addend = 0;
3718 loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3719 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3720
3721 if (!h->def_regular)
3722 {
3723 /* Mark the symbol as undefined, rather than as defined in
3724 the .plt section. Leave the value alone. This is a clue
3725 for the dynamic linker, to make function pointer
3726 comparisons work between an application and shared
3727 library. */
3728 sym->st_shndx = SHN_UNDEF;
3729 }
a85d7ed0
NC		 3730 }
3731 }
ec338859 3732
69fc87f1
MS		 3733 if (h->got.offset != (bfd_vma) -1
3734 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3735 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3736 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3737 {
a85d7ed0 3738 Elf_Internal_Rela rela;
947216bf 3739 bfd_byte *loc;
a85d7ed0
NC		 3740
3741 /* This symbol has an entry in the global offset table. Set it
26e41594 3742 up. */
a85d7ed0 3743
f41345a7 3744 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3745 abort ();
a85d7ed0 3746
f41345a7
AK		 3747 rela.r_offset = (htab->elf.sgot->output_section->vma
3748 + htab->elf.sgot->output_offset
dc810e39 3749 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0
NC		 3750
3751 /* If this is a static link, or it is a -Bsymbolic link and the
3752 symbol is defined locally or was forced to be local because
3753 of a version file, we just want to emit a RELATIVE reloc.
3754 The entry in the global offset table will already have been
3755 initialized in the relocate_section function. */
470b557a
AK		 3756 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3757 {
0e1862bb 3758 if (bfd_link_pic (info))
470b557a
AK		 3759 {
3760 /* An explicit GOT slot usage needs GLOB_DAT. If the
3761 symbol references local the implicit got.iplt slot
3762 will be used and the IRELATIVE reloc has been created
3763 above. */
3764 goto do_glob_dat;
3765 }
3766 else
3767 {
3768 /* For non-shared objects explicit GOT slots must be
3769 filled with the PLT slot address for pointer
3770 equality reasons. */
3771 bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma
3772 + htab->elf.iplt->output_offset
3773 + h->plt.offset),
3774 htab->elf.sgot->contents + h->got.offset);
3775 return TRUE;
3776 }
3777 }
0e1862bb 3778 else if (bfd_link_pic (info)
ceada896 3779 && SYMBOL_REFERENCES_LOCAL (info, h))
0451c93c 3780 {
470b557a
AK		 3781 /* If this is a static link, or it is a -Bsymbolic link and
3782 the symbol is defined locally or was forced to be local
3783 because of a version file, we just want to emit a
3784 RELATIVE reloc. The entry in the global offset table
3785 will already have been initialized in the
3786 relocate_section function. */
8c21ca21
AK		 3787 if (!h->def_regular)
3788 return FALSE;
0451c93c
MS		 3789 BFD_ASSERT((h->got.offset & 1) != 0);
3790 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3791 rela.r_addend = (h->root.u.def.value
26e41594
AM		 3792 + h->root.u.def.section->output_section->vma
3793 + h->root.u.def.section->output_offset);
3794 }
a85d7ed0
NC		 3795 else
3796 {
3797 BFD_ASSERT((h->got.offset & 1) == 0);
470b557a 3798 do_glob_dat:
f41345a7 3799 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3800 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
26e41594
AM		 3801 rela.r_addend = 0;
3802 }
a85d7ed0 3803
f41345a7
AK		 3804 loc = htab->elf.srelgot->contents;
3805 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3806 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3807 }
3808
f5385ebf 3809 if (h->needs_copy)
a85d7ed0 3810 {
a85d7ed0 3811 Elf_Internal_Rela rela;
5474d94f 3812 asection *s;
947216bf 3813 bfd_byte *loc;
a85d7ed0
NC		 3814
3815 /* This symbols needs a copy reloc. Set it up. */
3816
0451c93c
MS		 3817 if (h->dynindx == -1
3818 || (h->root.type != bfd_link_hash_defined
3819 && h->root.type != bfd_link_hash_defweak)
5474d94f
AM		 3820 || htab->elf.srelbss == NULL
3821 || htab->elf.sreldynrelro == NULL)
0451c93c 3822 abort ();
a85d7ed0
NC		 3823
3824 rela.r_offset = (h->root.u.def.value
3825 + h->root.u.def.section->output_section->vma
3826 + h->root.u.def.section->output_offset);
3827 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3828 rela.r_addend = 0;
5474d94f
AM		 3829 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
3830 s = htab->elf.sreldynrelro;
3831 else
3832 s = htab->elf.srelbss;
3833 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3834 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3835 }
3836
3837 /* Mark some specially defined symbols as absolute. */
9637f6ef 3838 if (h == htab->elf.hdynamic
22edb2f1
RS		 3839 || h == htab->elf.hgot
3840 || h == htab->elf.hplt)
a85d7ed0
NC		 3841 sym->st_shndx = SHN_ABS;
3842
b34976b6 3843 return TRUE;
a85d7ed0
NC		 3844}
3845
0451c93c
MS		 3846/* Used to decide how to sort relocs in an optimal manner for the
3847 dynamic linker, before writing them out. */
3848
3849static enum elf_reloc_type_class
7e612e98
AM		 3850elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3851 const asection *rel_sec ATTRIBUTE_UNUSED,
3852 const Elf_Internal_Rela *rela)
0451c93c 3853{
0f042c67
AK		 3854 bfd *abfd = info->output_bfd;
3855 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3856 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3857 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
3858 Elf_Internal_Sym sym;
3859
3860 if (htab->elf.dynsym == NULL
3861 || !bed->s->swap_symbol_in (abfd,
3862 (htab->elf.dynsym->contents
3863 + r_symndx * bed->s->sizeof_sym),
3864 0, &sym))
3865 abort ();
3866
3867 /* Check relocation against STT_GNU_IFUNC symbol. */
3868 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3869 return reloc_class_ifunc;
3870
0451c93c
MS		 3871 switch ((int) ELF32_R_TYPE (rela->r_info))
3872 {
3873 case R_390_RELATIVE:
3874 return reloc_class_relative;
3875 case R_390_JMP_SLOT:
3876 return reloc_class_plt;
3877 case R_390_COPY:
3878 return reloc_class_copy;
3879 default:
3880 return reloc_class_normal;
3881 }
3882}
3883
a85d7ed0
NC		 3884/* Finish up the dynamic sections. */
3885
b34976b6 3886static bfd_boolean
2c3fc389
NC		 3887elf_s390_finish_dynamic_sections (bfd *output_bfd,
3888 struct bfd_link_info *info)
a85d7ed0 3889{
0451c93c 3890 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3891 bfd *dynobj;
3892 asection *sdyn;
470b557a
AK		 3893 bfd *ibfd;
3894 unsigned int i;
a85d7ed0 3895
0451c93c
MS		 3896 htab = elf_s390_hash_table (info);
3897 dynobj = htab->elf.dynobj;
3d4d4302 3898 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3899
0451c93c 3900 if (htab->elf.dynamic_sections_created)
a85d7ed0 3901 {
a85d7ed0
NC		 3902 Elf32_External_Dyn *dyncon, *dynconend;
3903
f41345a7 3904 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3905 abort ();
a85d7ed0
NC		 3906
3907 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 3908 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3909 for (; dyncon < dynconend; dyncon++)
3910 {
3911 Elf_Internal_Dyn dyn;
a85d7ed0 3912 asection *s;
ec338859 3913
a85d7ed0 3914 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3915
a85d7ed0
NC		 3916 switch (dyn.d_tag)
3917 {
3918 default:
0451c93c 3919 continue;
ec338859 3920
a85d7ed0 3921 case DT_PLTGOT:
4ade44b7
AM		 3922 s = htab->elf.sgotplt;
3923 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
0451c93c 3924 break;
ec338859 3925
a85d7ed0 3926 case DT_JMPREL:
4ade44b7
AM		 3927 s = htab->elf.srelplt;
3928 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a85d7ed0
NC		 3929 break;
3930
3931 case DT_PLTRELSZ:
f92339b8 3932 dyn.d_un.d_val = htab->elf.srelplt->size + htab->elf.irelplt->size;
a85d7ed0
NC		 3933 break;
3934 }
0451c93c
MS		 3935
3936 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3937 }
3938
3939 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3940 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0 3941 {
f41345a7 3942 memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
0e1862bb 3943 if (bfd_link_pic (info))
0451c93c 3944 {
f41345a7 3945 memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry,
9aa17453
AK		 3946 PLT_FIRST_ENTRY_SIZE);
3947 }
26e41594 3948 else
9aa17453 3949 {
f41345a7 3950 memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry,
9aa17453 3951 PLT_FIRST_ENTRY_SIZE);
26e41594 3952 bfd_put_32 (output_bfd,
f41345a7
AK		 3953 htab->elf.sgotplt->output_section->vma
3954 + htab->elf.sgotplt->output_offset,
3955 htab->elf.splt->contents + 24);
ceada896 3956 }
f41345a7 3957 elf_section_data (htab->elf.splt->output_section)
0451c93c 3958 ->this_hdr.sh_entsize = 4;
a85d7ed0
NC		 3959 }
3960
3961 }
3962
f41345a7 3963 if (htab->elf.sgotplt)
a85d7ed0 3964 {
0451c93c 3965 /* Fill in the first three entries in the global offset table. */
f41345a7 3966 if (htab->elf.sgotplt->size > 0)
0451c93c
MS		 3967 {
3968 bfd_put_32 (output_bfd,
3969 (sdyn == NULL ? (bfd_vma) 0
3970 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3971 htab->elf.sgotplt->contents);
0451c93c 3972 /* One entry for shared object struct ptr. */
f41345a7 3973 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4);
0451c93c 3974 /* One entry for _dl_runtime_resolve. */
f41345a7 3975 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3976 }
a85d7ed0 3977
f41345a7 3978 elf_section_data (htab->elf.sgotplt->output_section)
0451c93c
MS		 3979 ->this_hdr.sh_entsize = 4;
3980 }
470b557a 3981 /* Finish dynamic symbol for local IFUNC symbols. */
c72f2fb2 3982 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
470b557a
AK		 3983 {
3984 struct plt_entry *local_plt;
3985 Elf_Internal_Sym *isym;
3986 Elf_Internal_Shdr *symtab_hdr;
3987
3988 symtab_hdr = &elf_symtab_hdr (ibfd);
3989
3990 local_plt = elf_s390_local_plt (ibfd);
3991 if (local_plt != NULL)
3992 for (i = 0; i < symtab_hdr->sh_info; i++)
3993 {
3994 if (local_plt[i].plt.offset != (bfd_vma) -1)
3995 {
3996 asection *sec = local_plt[i].sec;
3997 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3998 if (isym == NULL)
3999 return FALSE;
4000
4001 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4002 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
4003 local_plt[i].plt.offset,
4004 isym->st_value
4005 + sec->output_section->vma
4006 + sec->output_offset);
4007
4008 }
4009 }
4010 }
b34976b6 4011 return TRUE;
a85d7ed0 4012}
e3e9290d
AA		 4013\f
4014/* Support for core dump NOTE sections. */
a85d7ed0 4015
b34976b6 4016static bfd_boolean
2c3fc389 4017elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note)
979f4a38
NC		 4018{
4019 int offset;
eea6121a 4020 unsigned int size;
979f4a38
NC		 4021
4022 switch (note->descsz)
4023 {
ceada896
AA		 4024 default:
4025 return FALSE;
979f4a38 4026
ceada896
AA		 4027 case 224: /* S/390 Linux. */
4028 /* pr_cursig */
4029 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
979f4a38 4030
ceada896
AA		 4031 /* pr_pid */
4032 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
979f4a38 4033
ceada896
AA		 4034 /* pr_reg */
4035 offset = 72;
4036 size = 144;
4037 break;
979f4a38
NC		 4038 }
4039
4040 /* Make a ".reg/999" section. */
4041 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 4042 size, note->descpos + offset);
979f4a38
NC		 4043}
4044
e3e9290d
AA		 4045static bfd_boolean
4046elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
4047{
4048 switch (note->descsz)
4049 {
4050 default:
4051 return FALSE;
4052
4053 case 124: /* sizeof(struct elf_prpsinfo) on s390 */
4054 elf_tdata (abfd)->core->pid
4055 = bfd_get_32 (abfd, note->descdata + 12);
4056 elf_tdata (abfd)->core->program
4057 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
4058 elf_tdata (abfd)->core->command
4059 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
4060 break;
4061 }
4062
4063 /* Note that for some reason, a spurious space is tacked
4064 onto the end of the args in some (at least one anyway)
4065 implementations, so strip it off if it exists. */
4066
4067 {
4068 char *command = elf_tdata (abfd)->core->command;
4069 int n = strlen (command);
4070
4071 if (0 < n && command[n - 1] == ' ')
4072 command[n - 1] = '\0';
4073 }
4074
4075 return TRUE;
4076}
4077
4078static char *
4079elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
4080 int note_type, ...)
4081{
4082 va_list ap;
4083
4084 switch (note_type)
4085 {
4086 default:
4087 return NULL;
4088
4089 case NT_PRPSINFO:
4090 {
4091 char data[124] = { 0 };
4092 const char *fname, *psargs;
4093
4094 va_start (ap, note_type);
4095 fname = va_arg (ap, const char *);
4096 psargs = va_arg (ap, const char *);
4097 va_end (ap);
4098
4099 strncpy (data + 28, fname, 16);
4100 strncpy (data + 44, psargs, 80);
4101 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
4102 &data, sizeof (data));
4103 }
4104
4105 case NT_PRSTATUS:
4106 {
4107 char data[224] = { 0 };
4108 long pid;
4109 int cursig;
4110 const void *gregs;
4111
4112 va_start (ap, note_type);
4113 pid = va_arg (ap, long);
4114 cursig = va_arg (ap, int);
4115 gregs = va_arg (ap, const void *);
4116 va_end (ap);
4117
4118 bfd_put_16 (abfd, cursig, data + 12);
4119 bfd_put_32 (abfd, pid, data + 24);
4120 memcpy (data + 72, gregs, 144);
4121 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
4122 &data, sizeof (data));
4123 }
4124 }
4125 /* NOTREACHED */
4126}
4127\f
4c45e5c9
JJ		 4128/* Return address for Ith PLT stub in section PLT, for relocation REL
4129 or (bfd_vma) -1 if it should not be included. */
4130
4131static bfd_vma
4132elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
4133 const arelent *rel ATTRIBUTE_UNUSED)
4134{
4135 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
4136}
4137
643f7afb
AK		 4138/* Merge backend specific data from an object file to the output
4139 object file when linking. */
4140
55786da2 4141static bfd_boolean
50e03d47 4142elf32_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
55786da2 4143{
50e03d47
AM		 4144 bfd *obfd = info->output_bfd;
4145
643f7afb
AK		 4146 if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
4147 return TRUE;
4148
50e03d47 4149 if (!elf_s390_merge_obj_attributes (ibfd, info))
643f7afb
AK		 4150 return FALSE;
4151
55786da2
AK		 4152 elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
4153 return TRUE;
4154}
4155
4c45e5c9 4156
6d00b590 4157#define TARGET_BIG_SYM s390_elf32_vec
a85d7ed0
NC		 4158#define TARGET_BIG_NAME "elf32-s390"
4159#define ELF_ARCH bfd_arch_s390
ae95ffa6 4160#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 4161#define ELF_MACHINE_CODE EM_S390
4162#define ELF_MACHINE_ALT1 EM_S390_OLD
4163#define ELF_MAXPAGESIZE 0x1000
4164
4165#define elf_backend_can_gc_sections 1
51b64d56 4166#define elf_backend_can_refcount 1
a85d7ed0
NC		 4167#define elf_backend_want_got_plt 1
4168#define elf_backend_plt_readonly 1
4169#define elf_backend_want_plt_sym 0
4170#define elf_backend_got_header_size 12
5474d94f 4171#define elf_backend_want_dynrelro 1
b491616a 4172#define elf_backend_rela_normal 1
a85d7ed0 4173
26e41594 4174#define elf_info_to_howto elf_s390_info_to_howto
a85d7ed0 4175
a85d7ed0
NC		 4176#define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
4177#define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
4178#define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
157090f7 4179#define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
a85d7ed0 4180
55786da2
AK		 4181#define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
4182
a85d7ed0 4183#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
26e41594 4184#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c 4185#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
9d19e4fd 4186#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
a85d7ed0
NC		 4187#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4188#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
26e41594
AM		 4189#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
4190#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
0451c93c 4191#define elf_backend_reloc_type_class elf_s390_reloc_type_class
26e41594 4192#define elf_backend_relocate_section elf_s390_relocate_section
a85d7ed0 4193#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 4194#define elf_backend_init_index_section _bfd_elf_init_1_index_section
979f4a38 4195#define elf_backend_grok_prstatus elf_s390_grok_prstatus
e3e9290d
AA		 4196#define elf_backend_grok_psinfo elf_s390_grok_psinfo
4197#define elf_backend_write_core_note elf_s390_write_core_note
4c45e5c9 4198#define elf_backend_plt_sym_val elf_s390_plt_sym_val
470b557a 4199#define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
b9005ba7 4200#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
a85d7ed0 4201
69fc87f1 4202#define bfd_elf32_mkobject elf_s390_mkobject
26e41594 4203#define elf_backend_object_p elf_s390_object_p
a85d7ed0
NC		 4204
4205#include "elf32-target.h"
GDB Binutils - Deliverables
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