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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
2571583a 2 Copyright (C) 2000-2017 Free Software Foundation, Inc.
a85d7ed0
NC		 3 Contributed by Carl B. Pedersen and Martin Schwidefsky.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
a85d7ed0
NC		 10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
3e110533 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
53e09e0a 20 02110-1301, USA. */
a85d7ed0 21
a85d7ed0 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
a85d7ed0
NC		 24#include "bfdlink.h"
25#include "libbfd.h"
26#include "elf-bfd.h"
a85d7ed0 27#include "elf/s390.h"
e3e9290d 28#include <stdarg.h>
a85d7ed0 29
2c3fc389
NC		 30static bfd_reloc_status_type
31s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
32 asection *, bfd *, char **);
33static bfd_reloc_status_type
34s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
35 asection *, bfd *, char **);
36
a85d7ed0
NC		 37/* The relocation "howto" table. */
38
39static reloc_howto_type elf_howto_table[] =
40{
41 HOWTO (R_390_NONE, /* type */
42 0, /* rightshift */
6346d5ca 43 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
a85d7ed0 44 0, /* bitsize */
b34976b6 45 FALSE, /* pc_relative */
a85d7ed0
NC		 46 0, /* bitpos */
47 complain_overflow_dont, /* complain_on_overflow */
48 bfd_elf_generic_reloc, /* special_function */
49 "R_390_NONE", /* name */
b34976b6 50 FALSE, /* partial_inplace */
a85d7ed0
NC		 51 0, /* src_mask */
52 0, /* dst_mask */
b34976b6
AM		 53 FALSE), /* pcrel_offset */
54
5236c819
MS		 55 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
56 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
57 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
58 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
59 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
60 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
61 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
62 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
63 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
64 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
15f8604d 65 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 66 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
67 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
68 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
69 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
70 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
71 HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
72 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
73 HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
74 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
75 HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
76 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
77 HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
78 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
79 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
80 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
81 HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
82 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
83 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
84 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
85 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
86 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
87 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
88 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
89 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
90 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
91 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
92 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
93 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
94 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
95 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
96 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
97 EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
98 EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
99 EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
100 EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
101 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
102 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
103 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
104 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
105 EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
106 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
107 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
108 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
109 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
110 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
111 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
112 EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
113 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
114 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE),
115 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
116 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
117 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
118 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
119 EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
69fc87f1
MS		 120 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
121 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
122 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
123 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
124 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
125 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
126 HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE),
128 EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */
129 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
130 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
131 HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
132 bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE),
133 EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */
134 HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
135 bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE),
136 EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */
137 HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE),
139 EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */
140 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
141 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE),
142 HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
143 bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE),
144 EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */
145 HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE),
147 EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */
148 HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE),
150 HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE),
152 HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
153 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE),
bd1ea41b
MS		 154 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
155 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
156 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
157 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
158 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
159 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
160 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
161 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
470b557a
AK		 162 HOWTO(R_390_IRELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, 0xffffffff, FALSE),
fb798c50
AK		 164 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
165 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
166 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
167 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
168 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
169 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
170 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
171 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
a85d7ed0
NC		 172};
173
174/* GNU extension to record C++ vtable hierarchy. */
175static reloc_howto_type elf32_s390_vtinherit_howto =
b34976b6 176 HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
a85d7ed0 177static reloc_howto_type elf32_s390_vtentry_howto =
b34976b6 178 HOWTO (R_390_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
a85d7ed0
NC		 179
180static reloc_howto_type *
2c3fc389
NC		 181elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
182 bfd_reloc_code_real_type code)
a85d7ed0 183{
ec338859 184 switch (code)
0451c93c
MS		 185 {
186 case BFD_RELOC_NONE:
187 return &elf_howto_table[(int) R_390_NONE];
188 case BFD_RELOC_8:
189 return &elf_howto_table[(int) R_390_8];
190 case BFD_RELOC_390_12:
191 return &elf_howto_table[(int) R_390_12];
192 case BFD_RELOC_16:
193 return &elf_howto_table[(int) R_390_16];
194 case BFD_RELOC_32:
195 return &elf_howto_table[(int) R_390_32];
196 case BFD_RELOC_CTOR:
197 return &elf_howto_table[(int) R_390_32];
198 case BFD_RELOC_32_PCREL:
199 return &elf_howto_table[(int) R_390_PC32];
200 case BFD_RELOC_390_GOT12:
201 return &elf_howto_table[(int) R_390_GOT12];
202 case BFD_RELOC_32_GOT_PCREL:
203 return &elf_howto_table[(int) R_390_GOT32];
204 case BFD_RELOC_390_PLT32:
205 return &elf_howto_table[(int) R_390_PLT32];
206 case BFD_RELOC_390_COPY:
207 return &elf_howto_table[(int) R_390_COPY];
208 case BFD_RELOC_390_GLOB_DAT:
209 return &elf_howto_table[(int) R_390_GLOB_DAT];
210 case BFD_RELOC_390_JMP_SLOT:
211 return &elf_howto_table[(int) R_390_JMP_SLOT];
212 case BFD_RELOC_390_RELATIVE:
213 return &elf_howto_table[(int) R_390_RELATIVE];
214 case BFD_RELOC_32_GOTOFF:
5236c819 215 return &elf_howto_table[(int) R_390_GOTOFF32];
0451c93c
MS		 216 case BFD_RELOC_390_GOTPC:
217 return &elf_howto_table[(int) R_390_GOTPC];
218 case BFD_RELOC_390_GOT16:
219 return &elf_howto_table[(int) R_390_GOT16];
220 case BFD_RELOC_16_PCREL:
221 return &elf_howto_table[(int) R_390_PC16];
fb798c50
AK		 222 case BFD_RELOC_390_PC12DBL:
223 return &elf_howto_table[(int) R_390_PC12DBL];
224 case BFD_RELOC_390_PLT12DBL:
225 return &elf_howto_table[(int) R_390_PLT12DBL];
0451c93c
MS		 226 case BFD_RELOC_390_PC16DBL:
227 return &elf_howto_table[(int) R_390_PC16DBL];
228 case BFD_RELOC_390_PLT16DBL:
229 return &elf_howto_table[(int) R_390_PLT16DBL];
fb798c50
AK		 230 case BFD_RELOC_390_PC24DBL:
231 return &elf_howto_table[(int) R_390_PC24DBL];
232 case BFD_RELOC_390_PLT24DBL:
233 return &elf_howto_table[(int) R_390_PLT24DBL];
befc3abb
MS		 234 case BFD_RELOC_390_PC32DBL:
235 return &elf_howto_table[(int) R_390_PC32DBL];
236 case BFD_RELOC_390_PLT32DBL:
237 return &elf_howto_table[(int) R_390_PLT32DBL];
238 case BFD_RELOC_390_GOTPCDBL:
239 return &elf_howto_table[(int) R_390_GOTPCDBL];
240 case BFD_RELOC_390_GOTENT:
241 return &elf_howto_table[(int) R_390_GOTENT];
5236c819
MS		 242 case BFD_RELOC_16_GOTOFF:
243 return &elf_howto_table[(int) R_390_GOTOFF16];
244 case BFD_RELOC_390_GOTPLT12:
245 return &elf_howto_table[(int) R_390_GOTPLT12];
246 case BFD_RELOC_390_GOTPLT16:
247 return &elf_howto_table[(int) R_390_GOTPLT16];
248 case BFD_RELOC_390_GOTPLT32:
249 return &elf_howto_table[(int) R_390_GOTPLT32];
250 case BFD_RELOC_390_GOTPLTENT:
251 return &elf_howto_table[(int) R_390_GOTPLTENT];
252 case BFD_RELOC_390_PLTOFF16:
253 return &elf_howto_table[(int) R_390_PLTOFF16];
254 case BFD_RELOC_390_PLTOFF32:
255 return &elf_howto_table[(int) R_390_PLTOFF32];
69fc87f1
MS		 256 case BFD_RELOC_390_TLS_LOAD:
257 return &elf_howto_table[(int) R_390_TLS_LOAD];
258 case BFD_RELOC_390_TLS_GDCALL:
259 return &elf_howto_table[(int) R_390_TLS_GDCALL];
260 case BFD_RELOC_390_TLS_LDCALL:
261 return &elf_howto_table[(int) R_390_TLS_LDCALL];
262 case BFD_RELOC_390_TLS_GD32:
263 return &elf_howto_table[(int) R_390_TLS_GD32];
264 case BFD_RELOC_390_TLS_GOTIE12:
265 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
266 case BFD_RELOC_390_TLS_GOTIE32:
267 return &elf_howto_table[(int) R_390_TLS_GOTIE32];
268 case BFD_RELOC_390_TLS_LDM32:
269 return &elf_howto_table[(int) R_390_TLS_LDM32];
270 case BFD_RELOC_390_TLS_IE32:
271 return &elf_howto_table[(int) R_390_TLS_IE32];
272 case BFD_RELOC_390_TLS_IEENT:
273 return &elf_howto_table[(int) R_390_TLS_IEENT];
274 case BFD_RELOC_390_TLS_LE32:
275 return &elf_howto_table[(int) R_390_TLS_LE32];
276 case BFD_RELOC_390_TLS_LDO32:
277 return &elf_howto_table[(int) R_390_TLS_LDO32];
278 case BFD_RELOC_390_TLS_DTPMOD:
279 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
280 case BFD_RELOC_390_TLS_DTPOFF:
281 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
282 case BFD_RELOC_390_TLS_TPOFF:
283 return &elf_howto_table[(int) R_390_TLS_TPOFF];
bd1ea41b
MS		 284 case BFD_RELOC_390_20:
285 return &elf_howto_table[(int) R_390_20];
286 case BFD_RELOC_390_GOT20:
287 return &elf_howto_table[(int) R_390_GOT20];
288 case BFD_RELOC_390_GOTPLT20:
289 return &elf_howto_table[(int) R_390_GOTPLT20];
290 case BFD_RELOC_390_TLS_GOTIE20:
291 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
470b557a
AK		 292 case BFD_RELOC_390_IRELATIVE:
293 return &elf_howto_table[(int) R_390_IRELATIVE];
0451c93c
MS		 294 case BFD_RELOC_VTABLE_INHERIT:
295 return &elf32_s390_vtinherit_howto;
296 case BFD_RELOC_VTABLE_ENTRY:
297 return &elf32_s390_vtentry_howto;
298 default:
299 break;
300 }
a85d7ed0
NC		 301 return 0;
302}
303
157090f7
AM		 304static reloc_howto_type *
305elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
306 const char *r_name)
307{
308 unsigned int i;
309
310 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
311 if (elf_howto_table[i].name != NULL
312 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
313 return &elf_howto_table[i];
314
315 if (strcasecmp (elf32_s390_vtinherit_howto.name, r_name) == 0)
316 return &elf32_s390_vtinherit_howto;
317 if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0)
318 return &elf32_s390_vtentry_howto;
319
320 return NULL;
321}
322
a85d7ed0
NC		 323/* We need to use ELF32_R_TYPE so we have our own copy of this function,
324 and elf32-s390.c has its own copy. */
325
326static void
2c3fc389
NC		 327elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
328 arelent *cache_ptr,
329 Elf_Internal_Rela *dst)
a85d7ed0 330{
d0fb9a8d
JJ		 331 unsigned int r_type = ELF32_R_TYPE(dst->r_info);
332 switch (r_type)
a85d7ed0
NC		 333 {
334 case R_390_GNU_VTINHERIT:
335 cache_ptr->howto = &elf32_s390_vtinherit_howto;
336 break;
337
338 case R_390_GNU_VTENTRY:
339 cache_ptr->howto = &elf32_s390_vtentry_howto;
340 break;
341
342 default:
d0fb9a8d
JJ		 343 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
344 {
695344c0 345 /* xgettext:c-format */
4eca0228
AM		 346 _bfd_error_handler (_("%B: invalid relocation type %d"),
347 abfd, (int) r_type);
d0fb9a8d
JJ		 348 r_type = R_390_NONE;
349 }
350 cache_ptr->howto = &elf_howto_table[r_type];
dc810e39 351 }
a85d7ed0
NC		 352}
353
69fc87f1
MS		 354/* A relocation function which doesn't do anything. */
355static bfd_reloc_status_type
2c3fc389
NC		 356s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
357 arelent *reloc_entry,
358 asymbol *symbol ATTRIBUTE_UNUSED,
359 void * data ATTRIBUTE_UNUSED,
360 asection *input_section,
361 bfd *output_bfd,
362 char **error_message ATTRIBUTE_UNUSED)
69fc87f1
MS		 363{
364 if (output_bfd)
365 reloc_entry->address += input_section->output_offset;
366 return bfd_reloc_ok;
367}
368
bd1ea41b
MS		 369/* Handle the large displacement relocs. */
370static bfd_reloc_status_type
2c3fc389
NC		 371s390_elf_ldisp_reloc (bfd *abfd ATTRIBUTE_UNUSED,
372 arelent *reloc_entry,
373 asymbol *symbol,
374 void * data ATTRIBUTE_UNUSED,
375 asection *input_section,
376 bfd *output_bfd,
377 char **error_message ATTRIBUTE_UNUSED)
bd1ea41b
MS		 378{
379 reloc_howto_type *howto = reloc_entry->howto;
380 bfd_vma relocation;
381 bfd_vma insn;
68ffbac6 382
bd1ea41b
MS		 383 if (output_bfd != (bfd *) NULL
384 && (symbol->flags & BSF_SECTION_SYM) == 0
385 && (! howto->partial_inplace
386 || reloc_entry->addend == 0))
387 {
388 reloc_entry->address += input_section->output_offset;
389 return bfd_reloc_ok;
390 }
68ffbac6 391
bd1ea41b
MS		 392 if (output_bfd != NULL)
393 return bfd_reloc_continue;
68ffbac6 394
07515404 395 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b 396 return bfd_reloc_outofrange;
68ffbac6 397
bd1ea41b
MS		 398 relocation = (symbol->value
399 + symbol->section->output_section->vma
400 + symbol->section->output_offset);
401 relocation += reloc_entry->addend;
402 if (howto->pc_relative)
403 {
404 relocation -= (input_section->output_section->vma
405 + input_section->output_offset);
406 relocation -= reloc_entry->address;
407 }
68ffbac6 408
bd1ea41b
MS		 409 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
410 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
411 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
68ffbac6 412
bd1ea41b
MS		 413 if ((bfd_signed_vma) relocation < - 0x80000
414 || (bfd_signed_vma) relocation > 0x7ffff)
415 return bfd_reloc_overflow;
416 else
417 return bfd_reloc_ok;
418}
419
b34976b6 420static bfd_boolean
2c3fc389 421elf_s390_is_local_label_name (bfd *abfd, const char *name)
a85d7ed0
NC		 422{
423 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 424 return TRUE;
a85d7ed0
NC		 425
426 return _bfd_elf_is_local_label_name (abfd, name);
427}
428
429/* Functions for the 390 ELF linker. */
430
431/* The name of the dynamic interpreter. This is put in the .interp
432 section. */
433
87049b0d 434#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
a85d7ed0 435
64285810
MS		 436/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
437 copying dynamic variables from a shared lib into an app's dynbss
438 section, and instead use a dynamic relocation to point into the
439 shared lib. */
440#define ELIMINATE_COPY_RELOCS 1
441
a85d7ed0
NC		 442/* The size in bytes of the first entry in the procedure linkage table. */
443#define PLT_FIRST_ENTRY_SIZE 32
444/* The size in bytes of an entry in the procedure linkage table. */
dc810e39 445#define PLT_ENTRY_SIZE 32
a85d7ed0
NC		 446
447#define GOT_ENTRY_SIZE 4
448
470b557a
AK		 449#define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela)
450
a85d7ed0
NC		 451/* The first three entries in a procedure linkage table are reserved,
452 and the initial contents are unimportant (we zero them out).
453 Subsequent entries look like this. See the SVR4 ABI 386
454 supplement to see how this works. */
455
456/* For the s390, simple addr offset can only be 0 - 4096.
457 To use the full 2 GB address space, several instructions
458 are needed to load an address in a register and execute
459 a branch( or just saving the address)
460
dc810e39 461 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC		 462
463/* The first 3 words in the GOT are then reserved.
464 Word 0 is the address of the dynamic table.
465 Word 1 is a pointer to a structure describing the object
466 Word 2 is used to point to the loader entry address.
467
4cc11e76 468 The code for position independent PLT entries looks like this:
a85d7ed0
NC		 469
470 r12 holds addr of the current GOT at entry to the PLT
471
472 The GOT holds the address in the PLT to be executed.
473 The loader then gets:
474 24(15) = Pointer to the structure describing the object.
a7e28bbe 475 28(15) = Offset into rela.plt
a85d7ed0
NC		 476
477 The loader must then find the module where the function is
478 and insert the address in the GOT.
479
480 Note: 390 can only address +- 64 K relative.
481 We check if offset > 65536, then make a relative branch -64xxx
482 back to a previous defined branch
483
484PLT1: BASR 1,0 # 2 bytes
485 L 1,22(1) # 4 bytes Load offset in GOT in r 1
486 L 1,(1,12) # 4 bytes Load address from GOT in r1
487 BCR 15,1 # 2 bytes Jump to address
488RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
489 L 1,14(1) # 4 bytes Load offset in symol table in r1
490 BRC 15,-x # 4 bytes Jump to start of PLT
491 .word 0 # 2 bytes filler
492 .long ? # 4 bytes offset in GOT
a7e28bbe 493 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 494
495 This was the general case. There are two additional, optimizes PLT
496 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
497 First the one for GOT offsets < 4096:
498
499PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
500 BCR 15,1 # 2 bytes Jump to address
501 .word 0,0,0 # 6 bytes filler
502RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
a7e28bbe 503 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
a85d7ed0
NC		 504 BRC 15,-x # 4 bytes Jump to start of PLT
505 .word 0,0,0 # 6 bytes filler
a7e28bbe 506 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 507
508 Second the one for GOT offsets < 32768:
509
510PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
511 L 1,(1,12) # 4 bytes Load address from GOT to r1
512 BCR 15,1 # 2 bytes Jump to address
513 .word 0 # 2 bytes filler
514RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
a7e28bbe 515 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
a85d7ed0
NC		 516 BRC 15,-x # 4 bytes Jump to start of PLT
517 .word 0,0,0 # 6 bytes filler
a7e28bbe 518 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 519
520Total = 32 bytes per PLT entry
521
522 The code for static build PLT entries looks like this:
523
524PLT1: BASR 1,0 # 2 bytes
525 L 1,22(1) # 4 bytes Load address of GOT entry
526 L 1,0(0,1) # 4 bytes Load address from GOT in r1
527 BCR 15,1 # 2 bytes Jump to address
528RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
529 L 1,14(1) # 4 bytes Load offset in symbol table in r1
530 BRC 15,-x # 4 bytes Jump to start of PLT
531 .word 0 # 2 bytes filler
532 .long ? # 4 bytes address of GOT entry
a7e28bbe 533 .long ? # 4 bytes offset into rela.plt */
a85d7ed0 534
9aa17453
AK		 535static const bfd_byte elf_s390_plt_entry[PLT_ENTRY_SIZE] =
536 {
537 0x0d, 0x10, /* basr %r1,%r0 */
538 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
539 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */
540 0x07, 0xf1, /* br %r1 */
541 0x0d, 0x10, /* basr %r1,%r0 */
542 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
543 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
544 0x00, 0x00, /* padding */
545 0x00, 0x00, 0x00, 0x00, /* GOT offset */
546 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
547 };
548
549/* Generic PLT pic entry. */
550static const bfd_byte elf_s390_plt_pic_entry[PLT_ENTRY_SIZE] =
551 {
552 0x0d, 0x10, /* basr %r1,%r0 */
553 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
554 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
555 0x07, 0xf1, /* br %r1 */
556 0x0d, 0x10, /* basr %r1,%r0 */
557 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
558 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
559 0x00, 0x00, /* padding */
560 0x00, 0x00, 0x00, 0x00, /* GOT offset */
561 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
562 };
563
564/* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced
565 when generating the PLT slot with the GOT offset. */
566static const bfd_byte elf_s390_plt_pic12_entry[PLT_ENTRY_SIZE] =
567 {
568 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */
569 0x07, 0xf1, /* br %r1 */
570 0x00, 0x00, 0x00, 0x00, /* padding */
571 0x00, 0x00,
572 0x0d, 0x10, /* basr %r1,%r0 */
573 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
574 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
575 0x00, 0x00, 0x00, 0x00,
576 0x00, 0x00, 0x00, 0x00
577 };
578
579/* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced
580 when generating the PLT slot with the GOT offset. */
581static const bfd_byte elf_s390_plt_pic16_entry[PLT_ENTRY_SIZE] =
582 {
583 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */
584 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
585 0x07, 0xf1, /* br %r1 */
586 0x00, 0x00,
587 0x0d, 0x10, /* basr %r1,%r0 */
588 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
589 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
590 0x00, 0x00, 0x00, 0x00,
591 0x00, 0x00, 0x00, 0x00,
592 0x00, 0x00
593 };
a85d7ed0 594
a7e28bbe 595/* The first PLT entry pushes the offset into the rela.plt
a85d7ed0
NC		 596 from R1 onto the stack at 8(15) and the loader object info
597 at 12(15), loads the loader address in R1 and jumps to it. */
598
599/* The first entry in the PLT for PIC code:
600
601PLT0:
a7e28bbe 602 ST 1,28(15) # R1 has offset into rela.plt
a85d7ed0 603 L 1,4(12) # Get loader ino(object struct address)
dc810e39 604 ST 1,24(15) # Store address
a85d7ed0
NC		 605 L 1,8(12) # Entry address of loader in R1
606 BR 1 # Jump to loader
607
608 The first entry in the PLT for static code:
609
610PLT0:
a7e28bbe 611 ST 1,28(15) # R1 has offset into rela.plt
a85d7ed0
NC		 612 BASR 1,0
613 L 1,18(0,1) # Get address of GOT
614 MVC 24(4,15),4(1) # Move loader ino to stack
615 L 1,8(1) # Get address of loader
616 BR 1 # Jump to loader
617 .word 0 # filler
618 .long got # address of GOT */
619
9aa17453
AK		 620static const bfd_byte elf_s390_plt_first_entry[PLT_FIRST_ENTRY_SIZE] =
621 {
622 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
623 0x0d, 0x10, /* basr %r1,%r0 */
624 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */
625 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */
626 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */
627 0x07, 0xf1, /* br %r1 */
628 0x00, 0x00, 0x00, 0x00,
629 0x00, 0x00, 0x00, 0x00,
630 0x00, 0x00
631 };
632
633static const bfd_byte elf_s390_plt_pic_first_entry[PLT_FIRST_ENTRY_SIZE] =
634 {
635 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
636 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */
637 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */
638 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */
639 0x07, 0xf1, /* br %r1 */
640 0x00, 0x00, 0x00, 0x00,
641 0x00, 0x00, 0x00, 0x00,
642 0x00, 0x00, 0x00, 0x00,
643 0x00, 0x00
644 };
a85d7ed0 645
a85d7ed0
NC		 646
647/* s390 ELF linker hash entry. */
648
649struct elf_s390_link_hash_entry
650{
0451c93c 651 struct elf_link_hash_entry elf;
a85d7ed0 652
0451c93c 653 /* Track dynamic relocs copied for this symbol. */
00d8c7a9 654 struct elf_dyn_relocs *dyn_relocs;
5236c819
MS		 655
656 /* Number of GOTPLT references for a function. */
657 bfd_signed_vma gotplt_refcount;
69fc87f1
MS		 658
659#define GOT_UNKNOWN 0
660#define GOT_NORMAL 1
661#define GOT_TLS_GD 2
662#define GOT_TLS_IE 3
663#define GOT_TLS_IE_NLT 4
664 unsigned char tls_type;
470b557a
AK		 665
666 /* For pointer equality reasons we might need to change the symbol
667 type from STT_GNU_IFUNC to STT_FUNC together with its value and
668 section entry. So after alloc_dynrelocs only these values should
669 be used. In order to check whether a symbol is IFUNC use
670 s390_is_ifunc_symbol_p. */
671 bfd_vma ifunc_resolver_address;
672 asection *ifunc_resolver_section;
a85d7ed0
NC		 673};
674
69fc87f1
MS		 675#define elf_s390_hash_entry(ent) \
676 ((struct elf_s390_link_hash_entry *)(ent))
677
470b557a
AK		 678/* This structure represents an entry in the local PLT list needed for
679 local IFUNC symbols. */
680struct plt_entry
681{
682 /* The section of the local symbol.
683 Set in relocate_section and used in finish_dynamic_sections. */
684 asection *sec;
685
686 union
687 {
688 bfd_signed_vma refcount;
689 bfd_vma offset;
690 } plt;
691};
692
0ffa91dd
NC		 693/* NOTE: Keep this structure in sync with
694 the one declared in elf64-s390.c. */
69fc87f1
MS		 695struct elf_s390_obj_tdata
696{
697 struct elf_obj_tdata root;
698
470b557a
AK		 699 /* A local PLT is needed for ifunc symbols. */
700 struct plt_entry *local_plt;
701
0ffa91dd 702 /* TLS type for each local got entry. */
69fc87f1
MS		 703 char *local_got_tls_type;
704};
705
706#define elf_s390_tdata(abfd) \
707 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
708
470b557a
AK		 709#define elf_s390_local_plt(abfd) \
710 (elf_s390_tdata (abfd)->local_plt)
711
69fc87f1
MS		 712#define elf_s390_local_got_tls_type(abfd) \
713 (elf_s390_tdata (abfd)->local_got_tls_type)
714
0ffa91dd
NC		 715#define is_s390_elf(bfd) \
716 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
717 && elf_tdata (bfd) != NULL \
4dfe6ac6 718 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 719
69fc87f1 720static bfd_boolean
62d7a5f6 721elf_s390_mkobject (bfd *abfd)
69fc87f1 722{
0ffa91dd 723 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 724 S390_ELF_DATA);
69fc87f1
MS		 725}
726
727static bfd_boolean
2c3fc389 728elf_s390_object_p (bfd *abfd)
69fc87f1 729{
69fc87f1
MS		 730 /* Set the right machine number for an s390 elf32 file. */
731 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
732}
733
a85d7ed0
NC		 734/* s390 ELF linker hash table. */
735
736struct elf_s390_link_hash_table
737{
0451c93c 738 struct elf_link_hash_table elf;
a85d7ed0 739
0451c93c 740 /* Short-cuts to get to dynamic linker sections. */
470b557a 741 asection *irelifunc;
ec338859 742
2c3fc389
NC		 743 union
744 {
69fc87f1
MS		 745 bfd_signed_vma refcount;
746 bfd_vma offset;
747 } tls_ldm_got;
748
87d72d41
AM		 749 /* Small local sym cache. */
750 struct sym_cache sym_cache;
0451c93c 751};
a85d7ed0
NC		 752
753/* Get the s390 ELF linker hash table from a link_info structure. */
754
755#define elf_s390_hash_table(p) \
4dfe6ac6
NC		 756 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
757 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
a85d7ed0 758
470b557a
AK		 759#undef ELF64
760#include "elf-s390-common.c"
761
a85d7ed0
NC		 762/* Create an entry in an s390 ELF linker hash table. */
763
764static struct bfd_hash_entry *
2c3fc389
NC		 765link_hash_newfunc (struct bfd_hash_entry *entry,
766 struct bfd_hash_table *table,
767 const char *string)
a85d7ed0 768{
a85d7ed0
NC		 769 /* Allocate the structure if it has not already been allocated by a
770 subclass. */
0451c93c
MS		 771 if (entry == NULL)
772 {
773 entry = bfd_hash_allocate (table,
774 sizeof (struct elf_s390_link_hash_entry));
775 if (entry == NULL)
776 return entry;
777 }
ec338859 778
a85d7ed0 779 /* Call the allocation method of the superclass. */
0451c93c
MS		 780 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
781 if (entry != NULL)
a85d7ed0 782 {
0451c93c 783 struct elf_s390_link_hash_entry *eh;
ec338859 784
0451c93c
MS		 785 eh = (struct elf_s390_link_hash_entry *) entry;
786 eh->dyn_relocs = NULL;
5236c819 787 eh->gotplt_refcount = 0;
69fc87f1 788 eh->tls_type = GOT_UNKNOWN;
470b557a
AK		 789 eh->ifunc_resolver_address = 0;
790 eh->ifunc_resolver_section = NULL;
a85d7ed0
NC		 791 }
792
0451c93c 793 return entry;
a85d7ed0
NC		 794}
795
796/* Create an s390 ELF linker hash table. */
797
798static struct bfd_link_hash_table *
2c3fc389 799elf_s390_link_hash_table_create (bfd *abfd)
a85d7ed0
NC		 800{
801 struct elf_s390_link_hash_table *ret;
dc810e39 802 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
a85d7ed0 803
7bf52ea2 804 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
0451c93c 805 if (ret == NULL)
a85d7ed0
NC		 806 return NULL;
807
66eb6687 808 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 809 sizeof (struct elf_s390_link_hash_entry),
810 S390_ELF_DATA))
a85d7ed0 811 {
e2d34d7d 812 free (ret);
a85d7ed0
NC		 813 return NULL;
814 }
815
0451c93c
MS		 816 return &ret->elf.root;
817}
818
0451c93c
MS		 819/* Copy the extra info we tack onto an elf_link_hash_entry. */
820
821static void
2c3fc389
NC		 822elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
823 struct elf_link_hash_entry *dir,
824 struct elf_link_hash_entry *ind)
0451c93c
MS		 825{
826 struct elf_s390_link_hash_entry *edir, *eind;
827
828 edir = (struct elf_s390_link_hash_entry *) dir;
829 eind = (struct elf_s390_link_hash_entry *) ind;
830
831 if (eind->dyn_relocs != NULL)
832 {
833 if (edir->dyn_relocs != NULL)
834 {
00d8c7a9
AK		 835 struct elf_dyn_relocs **pp;
836 struct elf_dyn_relocs *p;
0451c93c 837
fcfa13d2 838 /* Add reloc counts against the indirect sym to the direct sym
0451c93c
MS		 839 list. Merge any entries against the same section. */
840 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
841 {
00d8c7a9 842 struct elf_dyn_relocs *q;
0451c93c
MS		 843
844 for (q = edir->dyn_relocs; q != NULL; q = q->next)
845 if (q->sec == p->sec)
846 {
847 q->pc_count += p->pc_count;
848 q->count += p->count;
849 *pp = p->next;
850 break;
851 }
852 if (q == NULL)
853 pp = &p->next;
854 }
855 *pp = edir->dyn_relocs;
856 }
857
858 edir->dyn_relocs = eind->dyn_relocs;
859 eind->dyn_relocs = NULL;
860 }
861
69fc87f1
MS		 862 if (ind->root.type == bfd_link_hash_indirect
863 && dir->got.refcount <= 0)
864 {
865 edir->tls_type = eind->tls_type;
866 eind->tls_type = GOT_UNKNOWN;
867 }
868
64285810
MS		 869 if (ELIMINATE_COPY_RELOCS
870 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 871 && dir->dynamic_adjusted)
872 {
873 /* If called to transfer flags for a weakdef during processing
874 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
875 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
e81830c5
AM		 876 if (dir->versioned != versioned_hidden)
877 dir->ref_dynamic |= ind->ref_dynamic;
f5385ebf
AM		 878 dir->ref_regular |= ind->ref_regular;
879 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
880 dir->needs_plt |= ind->needs_plt;
881 }
64285810 882 else
fcfa13d2 883 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 884}
a85d7ed0 885
69fc87f1 886static int
2c3fc389
NC		 887elf_s390_tls_transition (struct bfd_link_info *info,
888 int r_type,
889 int is_local)
69fc87f1 890{
0e1862bb 891 if (bfd_link_pic (info))
69fc87f1
MS		 892 return r_type;
893
894 switch (r_type)
895 {
896 case R_390_TLS_GD32:
897 case R_390_TLS_IE32:
898 if (is_local)
899 return R_390_TLS_LE32;
900 return R_390_TLS_IE32;
901 case R_390_TLS_GOTIE32:
902 if (is_local)
903 return R_390_TLS_LE32;
904 return R_390_TLS_GOTIE32;
905 case R_390_TLS_LDM32:
906 return R_390_TLS_LE32;
907 }
908
909 return r_type;
910}
911
a85d7ed0
NC		 912/* Look through the relocs for a section during the first phase, and
913 allocate space in the global offset table or procedure linkage
914 table. */
915
b34976b6 916static bfd_boolean
2c3fc389
NC		 917elf_s390_check_relocs (bfd *abfd,
918 struct bfd_link_info *info,
919 asection *sec,
920 const Elf_Internal_Rela *relocs)
a85d7ed0 921{
0451c93c 922 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 923 Elf_Internal_Shdr *symtab_hdr;
924 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 925 const Elf_Internal_Rela *rel;
926 const Elf_Internal_Rela *rel_end;
a85d7ed0 927 asection *sreloc;
5236c819 928 bfd_signed_vma *local_got_refcounts;
69fc87f1 929 int tls_type, old_tls_type;
470b557a 930 Elf_Internal_Sym *isym;
a85d7ed0 931
0e1862bb 932 if (bfd_link_relocatable (info))
b34976b6 933 return TRUE;
a85d7ed0 934
0ffa91dd
NC		 935 BFD_ASSERT (is_s390_elf (abfd));
936
0451c93c 937 htab = elf_s390_hash_table (info);
0ffa91dd 938 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 939 sym_hashes = elf_sym_hashes (abfd);
5236c819 940 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 941
a85d7ed0
NC		 942 sreloc = NULL;
943
944 rel_end = relocs + sec->reloc_count;
945 for (rel = relocs; rel < rel_end; rel++)
946 {
69fc87f1 947 unsigned int r_type;
d42c267e 948 unsigned int r_symndx;
a85d7ed0
NC		 949 struct elf_link_hash_entry *h;
950
951 r_symndx = ELF32_R_SYM (rel->r_info);
952
0451c93c
MS		 953 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
954 {
695344c0 955 /* xgettext:c-format */
4eca0228
AM		 956 _bfd_error_handler (_("%B: bad symbol index: %d"),
957 abfd, r_symndx);
b34976b6 958 return FALSE;
0451c93c
MS		 959 }
960
a85d7ed0 961 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK		 962 {
963 /* A local symbol. */
964 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
965 abfd, r_symndx);
966 if (isym == NULL)
967 return FALSE;
968
969 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
970 {
971 struct plt_entry *plt;
972
0cb79d69
AK		 973 if (htab->elf.dynobj == NULL)
974 htab->elf.dynobj = abfd;
975
470b557a
AK		 976 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
977 return FALSE;
978
979 if (local_got_refcounts == NULL)
980 {
981 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
982 return FALSE;
983 local_got_refcounts = elf_local_got_refcounts (abfd);
984 }
985 plt = elf_s390_local_plt (abfd);
986 plt[r_symndx].plt.refcount++;
987 }
988 h = NULL;
989 }
a85d7ed0 990 else
973a3492
L		 991 {
992 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
993 while (h->root.type == bfd_link_hash_indirect
994 || h->root.type == bfd_link_hash_warning)
995 h = (struct elf_link_hash_entry *) h->root.u.i.link;
996 }
a85d7ed0 997
5236c819
MS		 998 /* Create got section and local_got_refcounts array if they
999 are needed. */
69fc87f1
MS		 1000 r_type = elf_s390_tls_transition (info,
1001 ELF32_R_TYPE (rel->r_info),
1002 h == NULL);
1003 switch (r_type)
a85d7ed0
NC		 1004 {
1005 case R_390_GOT12:
5236c819 1006 case R_390_GOT16:
bd1ea41b 1007 case R_390_GOT20:
a85d7ed0 1008 case R_390_GOT32:
befc3abb 1009 case R_390_GOTENT:
5236c819
MS		 1010 case R_390_GOTPLT12:
1011 case R_390_GOTPLT16:
bd1ea41b 1012 case R_390_GOTPLT20:
5236c819
MS		 1013 case R_390_GOTPLT32:
1014 case R_390_GOTPLTENT:
69fc87f1
MS		 1015 case R_390_TLS_GD32:
1016 case R_390_TLS_GOTIE12:
bd1ea41b 1017 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1018 case R_390_TLS_GOTIE32:
1019 case R_390_TLS_IEENT:
1020 case R_390_TLS_IE32:
1021 case R_390_TLS_LDM32:
5236c819
MS		 1022 if (h == NULL
1023 && local_got_refcounts == NULL)
a85d7ed0 1024 {
470b557a 1025 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 1026 return FALSE;
470b557a 1027 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 1028 }
5236c819
MS		 1029 /* Fall through. */
1030 case R_390_GOTOFF16:
1031 case R_390_GOTOFF32:
0451c93c 1032 case R_390_GOTPC:
befc3abb 1033 case R_390_GOTPCDBL:
f41345a7 1034 if (htab->elf.sgot == NULL)
0451c93c
MS		 1035 {
1036 if (htab->elf.dynobj == NULL)
1037 htab->elf.dynobj = abfd;
ce558b89 1038 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
b34976b6 1039 return FALSE;
0451c93c 1040 }
5236c819
MS		 1041 }
1042
470b557a
AK		 1043 if (h != NULL)
1044 {
1045 if (htab->elf.dynobj == NULL)
1046 htab->elf.dynobj = abfd;
1047 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1048 return FALSE;
1049
1050 /* Make sure an IFUNC symbol defined in a non-shared object
1051 always gets a PLT slot. */
1052 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1053 {
1054 /* The symbol is called by the dynamic loader in order
1055 to resolve the relocation. So it is in fact also
1056 referenced. */
1057 h->ref_regular = 1;
1058 h->needs_plt = 1;
1059 }
1060 }
69fc87f1 1061 switch (r_type)
5236c819 1062 {
5236c819
MS		 1063 case R_390_GOTPC:
1064 case R_390_GOTPCDBL:
470b557a
AK		 1065 /* These relocs do not need a GOT slot. They just load the
1066 GOT pointer itself or address something else relative to
1067 the GOT. Since the GOT pointer has been set up above we
1068 are done. */
a85d7ed0 1069 break;
01a53584
AK		 1070 case R_390_GOTOFF16:
1071 case R_390_GOTOFF32:
1072 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
1073 break;
1a0670f3 1074 /* Fall through. */
a85d7ed0 1075
fb798c50 1076 case R_390_PLT12DBL:
26e41594 1077 case R_390_PLT16DBL:
fb798c50 1078 case R_390_PLT24DBL:
26e41594 1079 case R_390_PLT32DBL:
a85d7ed0 1080 case R_390_PLT32:
5236c819
MS		 1081 case R_390_PLTOFF16:
1082 case R_390_PLTOFF32:
a85d7ed0 1083 /* This symbol requires a procedure linkage table entry. We
26e41594
AM		 1084 actually build the entry in adjust_dynamic_symbol,
1085 because this might be a case of linking PIC code which is
1086 never referenced by a dynamic object, in which case we
1087 don't need to generate a procedure linkage table entry
1088 after all. */
a85d7ed0
NC		 1089
1090 /* If this is a local symbol, we resolve it directly without
26e41594 1091 creating a procedure linkage table entry. */
5236c819
MS		 1092 if (h != NULL)
1093 {
f5385ebf 1094 h->needs_plt = 1;
5236c819
MS		 1095 h->plt.refcount += 1;
1096 }
1097 break;
a85d7ed0 1098
5236c819
MS		 1099 case R_390_GOTPLT12:
1100 case R_390_GOTPLT16:
bd1ea41b 1101 case R_390_GOTPLT20:
5236c819
MS		 1102 case R_390_GOTPLT32:
1103 case R_390_GOTPLTENT:
1104 /* This symbol requires either a procedure linkage table entry
1105 or an entry in the local got. We actually build the entry
1106 in adjust_dynamic_symbol because whether this is really a
1107 global reference can change and with it the fact if we have
1108 to create a plt entry or a local got entry. To be able to
1109 make a once global symbol a local one we have to keep track
1110 of the number of gotplt references that exist for this
1111 symbol. */
1112 if (h != NULL)
1113 {
1114 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1115 h->needs_plt = 1;
5236c819
MS		 1116 h->plt.refcount += 1;
1117 }
1118 else
1119 local_got_refcounts[r_symndx] += 1;
a85d7ed0
NC		 1120 break;
1121
69fc87f1
MS		 1122 case R_390_TLS_LDM32:
1123 htab->tls_ldm_got.refcount += 1;
1124 break;
1125
1126 case R_390_TLS_IE32:
1127 case R_390_TLS_GOTIE12:
bd1ea41b 1128 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1129 case R_390_TLS_GOTIE32:
1130 case R_390_TLS_IEENT:
0e1862bb 1131 if (bfd_link_pic (info))
69fc87f1 1132 info->flags |= DF_STATIC_TLS;
ae9a127f 1133 /* Fall through. */
69fc87f1
MS		 1134
1135 case R_390_GOT12:
26e41594 1136 case R_390_GOT16:
bd1ea41b 1137 case R_390_GOT20:
69fc87f1
MS		 1138 case R_390_GOT32:
1139 case R_390_GOTENT:
1140 case R_390_TLS_GD32:
1141 /* This symbol requires a global offset table entry. */
1142 switch (r_type)
1143 {
1144 default:
1145 case R_390_GOT12:
1146 case R_390_GOT16:
bd1ea41b 1147 case R_390_GOT20:
69fc87f1
MS		 1148 case R_390_GOT32:
1149 case R_390_GOTENT:
1150 tls_type = GOT_NORMAL;
1151 break;
1152 case R_390_TLS_GD32:
1153 tls_type = GOT_TLS_GD;
1154 break;
1155 case R_390_TLS_IE32:
1156 case R_390_TLS_GOTIE32:
1157 tls_type = GOT_TLS_IE;
1158 break;
1159 case R_390_TLS_GOTIE12:
bd1ea41b 1160 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1161 case R_390_TLS_IEENT:
1162 tls_type = GOT_TLS_IE_NLT;
1163 break;
1164 }
1165
1166 if (h != NULL)
1167 {
1168 h->got.refcount += 1;
1169 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1170 }
1171 else
1172 {
1173 local_got_refcounts[r_symndx] += 1;
1174 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1175 }
1176 /* If a TLS symbol is accessed using IE at least once,
1177 there is no point to use dynamic model for it. */
1178 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1179 {
1180 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1181 {
4eca0228 1182 _bfd_error_handler
695344c0 1183 /* xgettext:c-format */
d003868e
AM		 1184 (_("%B: `%s' accessed both as normal and thread local symbol"),
1185 abfd, h->root.root.string);
69fc87f1
MS		 1186 return FALSE;
1187 }
1188 if (old_tls_type > tls_type)
1189 tls_type = old_tls_type;
1190 }
1191
1192 if (old_tls_type != tls_type)
1193 {
1194 if (h != NULL)
1195 elf_s390_hash_entry (h)->tls_type = tls_type;
1196 else
1197 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1198 }
1199
1200 if (r_type != R_390_TLS_IE32)
1201 break;
ae9a127f 1202 /* Fall through. */
69fc87f1
MS		 1203
1204 case R_390_TLS_LE32:
e00d879a
AK		 1205 /* For static linking and executables this reloc will be
1206 calculated at linktime otherwise a TLS_TPOFF runtime
1207 reloc will be generated. */
0e1862bb 1208 if (r_type == R_390_TLS_LE32 && bfd_link_pie (info))
e00d879a
AK		 1209 break;
1210
0e1862bb 1211 if (!bfd_link_pic (info))
69fc87f1
MS		 1212 break;
1213 info->flags |= DF_STATIC_TLS;
ae9a127f 1214 /* Fall through. */
69fc87f1 1215
26e41594
AM		 1216 case R_390_8:
1217 case R_390_16:
a85d7ed0 1218 case R_390_32:
26e41594 1219 case R_390_PC16:
fb798c50 1220 case R_390_PC12DBL:
26e41594 1221 case R_390_PC16DBL:
fb798c50 1222 case R_390_PC24DBL:
befc3abb 1223 case R_390_PC32DBL:
a85d7ed0 1224 case R_390_PC32:
99ba5125 1225 if (h != NULL && bfd_link_executable (info))
0451c93c
MS		 1226 {
1227 /* If this reloc is in a read-only section, we might
1228 need a copy reloc. We can't check reliably at this
1229 stage whether the section is read-only, as input
1230 sections have not yet been mapped to output sections.
1231 Tentatively set the flag for now, and correct in
1232 adjust_dynamic_symbol. */
f5385ebf 1233 h->non_got_ref = 1;
ec338859 1234
0e1862bb 1235 if (!bfd_link_pic (info))
470b557a
AK		 1236 {
1237 /* We may need a .plt entry if the function this reloc
1238 refers to is in a shared lib. */
1239 h->plt.refcount += 1;
1240 }
0451c93c 1241 }
a85d7ed0
NC		 1242
1243 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1244 against a global symbol, or a non PC relative reloc
1245 against a local symbol, then we need to copy the reloc
1246 into the shared library. However, if we are linking with
1247 -Bsymbolic, we do not need to copy a reloc against a
1248 global symbol which is defined in an object we are
1249 including in the link (i.e., DEF_REGULAR is set). At
1250 this point we have not seen all the input files, so it is
1251 possible that DEF_REGULAR is not set now but will be set
1252 later (it is never cleared). In case of a weak definition,
1253 DEF_REGULAR may be cleared later by a strong definition in
1254 a shared library. We account for that possibility below by
1255 storing information in the relocs_copied field of the hash
1256 table entry. A similar situation occurs when creating
1257 shared libraries and symbol visibility changes render the
1258 symbol local.
1259
1260 If on the other hand, we are creating an executable, we
1261 may need to keep relocations for symbols satisfied by a
1262 dynamic library if we manage to avoid copy relocs for the
1263 symbol. */
0e1862bb 1264 if ((bfd_link_pic (info)
0451c93c 1265 && (sec->flags & SEC_ALLOC) != 0
ec338859 1266 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1267 && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1268 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1269 && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL
befc3abb 1270 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
0451c93c
MS		 1271 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1272 || (h != NULL
8c21ca21 1273 && (! SYMBOLIC_BIND (info, h)
0451c93c 1274 || h->root.type == bfd_link_hash_defweak
f5385ebf 1275 || !h->def_regular))))
64285810 1276 || (ELIMINATE_COPY_RELOCS
0e1862bb 1277 && !bfd_link_pic (info)
0451c93c
MS		 1278 && (sec->flags & SEC_ALLOC) != 0
1279 && h != NULL
1280 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1281 || !h->def_regular)))
a85d7ed0 1282 {
00d8c7a9
AK		 1283 struct elf_dyn_relocs *p;
1284 struct elf_dyn_relocs **head;
ec338859 1285
0451c93c
MS		 1286 /* We must copy these reloc types into the output file.
1287 Create a reloc section in dynobj and make room for
1288 this reloc. */
a85d7ed0
NC		 1289 if (sreloc == NULL)
1290 {
0451c93c
MS		 1291 if (htab->elf.dynobj == NULL)
1292 htab->elf.dynobj = abfd;
a85d7ed0 1293
83bac4b0
NC		 1294 sreloc = _bfd_elf_make_dynamic_reloc_section
1295 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1296
a85d7ed0 1297 if (sreloc == NULL)
83bac4b0 1298 return FALSE;
a85d7ed0
NC		 1299 }
1300
0451c93c
MS		 1301 /* If this is a global symbol, we count the number of
1302 relocations we need for this symbol. */
1303 if (h != NULL)
a85d7ed0 1304 {
ec338859 1305 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS		 1306 }
1307 else
1308 {
ec338859
AM		 1309 /* Track dynamic relocs needed for local syms too.
1310 We really need local syms available to do this
1311 easily. Oh well. */
ec338859 1312 asection *s;
6edfbbad 1313 void *vpp;
ae9a127f 1314
87d72d41
AM		 1315 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1316 abfd, r_symndx);
1317 if (isym == NULL)
b34976b6 1318 return FALSE;
ec338859 1319
87d72d41
AM		 1320 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1321 if (s == NULL)
1322 s = sec;
1323
6edfbbad 1324 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1325 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1326 }
1327
1328 p = *head;
1329 if (p == NULL || p->sec != sec)
1330 {
1331 bfd_size_type amt = sizeof *p;
ae9a127f 1332
00d8c7a9 1333 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1334 bfd_alloc (htab->elf.dynobj, amt));
1335 if (p == NULL)
b34976b6 1336 return FALSE;
ec338859
AM		 1337 p->next = *head;
1338 *head = p;
1339 p->sec = sec;
1340 p->count = 0;
1341 p->pc_count = 0;
a85d7ed0 1342 }
ec338859
AM		 1343
1344 p->count += 1;
1345 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
fb798c50 1346 || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL
ec338859 1347 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
fb798c50 1348 || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL
befc3abb 1349 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
ec338859
AM		 1350 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1351 p->pc_count += 1;
a85d7ed0 1352 }
a85d7ed0 1353 break;
ec338859 1354
a85d7ed0
NC		 1355 /* This relocation describes the C++ object vtable hierarchy.
1356 Reconstruct it for later use during GC. */
26e41594 1357 case R_390_GNU_VTINHERIT:
c152c796 1358 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
26e41594
AM		 1359 return FALSE;
1360 break;
ec338859 1361
a85d7ed0
NC		 1362 /* This relocation describes which C++ vtable entries are actually
1363 used. Record for later use during GC. */
26e41594 1364 case R_390_GNU_VTENTRY:
d17e0c6e
JB		 1365 BFD_ASSERT (h != NULL);
1366 if (h != NULL
1367 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
26e41594
AM		 1368 return FALSE;
1369 break;
ec338859 1370
a85d7ed0
NC		 1371 default:
1372 break;
1373 }
1374 }
1375
b34976b6 1376 return TRUE;
a85d7ed0
NC		 1377}
1378
1379/* Return the section that should be marked against GC for a given
1380 relocation. */
1381
1382static asection *
07adf181
AM		 1383elf_s390_gc_mark_hook (asection *sec,
1384 struct bfd_link_info *info,
1385 Elf_Internal_Rela *rel,
1386 struct elf_link_hash_entry *h,
1387 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1388{
1389 if (h != NULL)
07adf181
AM		 1390 switch (ELF32_R_TYPE (rel->r_info))
1391 {
1392 case R_390_GNU_VTINHERIT:
1393 case R_390_GNU_VTENTRY:
1394 return NULL;
1395 }
1396 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0 1397
a85d7ed0
NC		 1398}
1399
5236c819
MS		 1400/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1401 entry but we found we will not create any. Called when we find we will
1402 not have any PLT for this symbol, by for example
1403 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1404 or elf_s390_size_dynamic_sections if no dynamic sections will be
1405 created (we're only linking static objects). */
1406
1407static void
2c3fc389 1408elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1409{
1410 if (h->elf.root.type == bfd_link_hash_warning)
1411 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1412
1413 if (h->gotplt_refcount <= 0)
1414 return;
1415
1416 /* We simply add the number of gotplt references to the number
1417 * of got references for this symbol. */
1418 h->elf.got.refcount += h->gotplt_refcount;
1419 h->gotplt_refcount = -1;
1420}
1421
a85d7ed0
NC		 1422/* Adjust a symbol defined by a dynamic object and referenced by a
1423 regular object. The current definition is in some section of the
1424 dynamic object, but we're not including those sections. We have to
1425 change the definition to something the rest of the link can
1426 understand. */
1427
b34976b6 1428static bfd_boolean
2c3fc389
NC		 1429elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1430 struct elf_link_hash_entry *h)
a85d7ed0 1431{
0451c93c 1432 struct elf_s390_link_hash_table *htab;
5474d94f 1433 asection *s, *srel;
a85d7ed0 1434
470b557a
AK		 1435 /* STT_GNU_IFUNC symbol must go through PLT. */
1436 if (s390_is_ifunc_symbol_p (h))
d8ee9e44
AK		 1437 {
1438 /* All local STT_GNU_IFUNC references must be treated as local
1439 calls via local PLT. */
1440 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1441 {
1442 bfd_size_type pc_count = 0, count = 0;
1443 struct elf_dyn_relocs **pp;
1444 struct elf_s390_link_hash_entry *eh;
1445 struct elf_dyn_relocs *p;
1446
1447 eh = (struct elf_s390_link_hash_entry *) h;
1448 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1449 {
1450 pc_count += p->pc_count;
1451 p->count -= p->pc_count;
1452 p->pc_count = 0;
1453 count += p->count;
1454 if (p->count == 0)
1455 *pp = p->next;
1456 else
1457 pp = &p->next;
1458 }
1459
1460 if (pc_count || count)
1461 {
1462 h->needs_plt = 1;
1463 h->non_got_ref = 1;
1464 if (h->plt.refcount <= 0)
1465 h->plt.refcount = 1;
1466 else
1467 h->plt.refcount += 1;
1468 }
1469 }
1470
1471 if (h->plt.refcount <= 0)
1472 {
1473 h->plt.offset = (bfd_vma) -1;
1474 h->needs_plt = 0;
1475 }
1476 return TRUE;
1477 }
470b557a 1478
a85d7ed0
NC		 1479 /* If this is a function, put it in the procedure linkage table. We
1480 will fill in the contents of the procedure linkage table later
cedb70c5 1481 (although we could actually do it here). */
a85d7ed0 1482 if (h->type == STT_FUNC
f5385ebf 1483 || h->needs_plt)
a85d7ed0 1484 {
0451c93c 1485 if (h->plt.refcount <= 0
8c21ca21
AK		 1486 || SYMBOL_CALLS_LOCAL (info, h)
1487 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1488 && h->root.type != bfd_link_hash_undefweak))
a85d7ed0
NC		 1489 {
1490 /* This case can occur if we saw a PLT32 reloc in an input
26e41594
AM		 1491 file, but the symbol was never referred to by a dynamic
1492 object, or if all references were garbage collected. In
a85d7ed0
NC		 1493 such a case, we don't actually need to build a procedure
1494 linkage table, and we can just do a PC32 reloc instead. */
1495 h->plt.offset = (bfd_vma) -1;
f5385ebf 1496 h->needs_plt = 0;
5236c819 1497 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1498 }
1499
b34976b6 1500 return TRUE;
a85d7ed0 1501 }
bbd7ec4a 1502 else
0451c93c
MS		 1503 /* It's possible that we incorrectly decided a .plt reloc was
1504 needed for an R_390_PC32 reloc to a non-function sym in
1505 check_relocs. We can't decide accurately between function and
1506 non-function syms in check-relocs; Objects loaded later in
1507 the link may change h->type. So fix it now. */
bbd7ec4a 1508 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1509
1510 /* If this is a weak symbol, and there is a real definition, the
1511 processor independent code will have arranged for us to see the
1512 real definition first, and we can just use the same value. */
60d67dc8 1513 if (h->is_weakalias)
a85d7ed0 1514 {
60d67dc8
AM		 1515 struct elf_link_hash_entry *def = weakdef (h);
1516 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1517 h->root.u.def.section = def->root.u.def.section;
1518 h->root.u.def.value = def->root.u.def.value;
64285810 1519 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
60d67dc8 1520 h->non_got_ref = def->non_got_ref;
b34976b6 1521 return TRUE;
a85d7ed0
NC		 1522 }
1523
1524 /* This is a reference to a symbol defined by a dynamic object which
1525 is not a function. */
1526
1527 /* If we are creating a shared library, we must presume that the
1528 only references to the symbol are via the global offset table.
1529 For such cases we need not do anything here; the relocations will
1530 be handled correctly by relocate_section. */
0e1862bb 1531 if (bfd_link_pic (info))
b34976b6 1532 return TRUE;
a85d7ed0
NC		 1533
1534 /* If there are no references to this symbol that do not use the
1535 GOT, we don't need to generate a copy reloc. */
f5385ebf 1536 if (!h->non_got_ref)
b34976b6 1537 return TRUE;
a85d7ed0 1538
0451c93c
MS		 1539 /* If -z nocopyreloc was given, we won't generate them either. */
1540 if (info->nocopyreloc)
1541 {
f5385ebf 1542 h->non_got_ref = 0;
b34976b6 1543 return TRUE;
0451c93c
MS		 1544 }
1545
64285810 1546 if (ELIMINATE_COPY_RELOCS)
0451c93c 1547 {
64285810 1548 struct elf_s390_link_hash_entry * eh;
00d8c7a9 1549 struct elf_dyn_relocs *p;
0451c93c 1550
64285810
MS		 1551 eh = (struct elf_s390_link_hash_entry *) h;
1552 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1553 {
1554 s = p->sec->output_section;
1555 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1556 break;
1557 }
1558
1559 /* If we didn't find any dynamic relocs in read-only sections, then
1560 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1561 if (p == NULL)
1562 {
f5385ebf 1563 h->non_got_ref = 0;
64285810
MS		 1564 return TRUE;
1565 }
0451c93c
MS		 1566 }
1567
a85d7ed0
NC		 1568 /* We must allocate the symbol in our .dynbss section, which will
1569 become part of the .bss section of the executable. There will be
1570 an entry for this symbol in the .dynsym section. The dynamic
1571 object will contain position independent code, so all references
1572 from the dynamic object to this symbol will go through the global
1573 offset table. The dynamic linker will use the .dynsym entry to
1574 determine the address it must put in the global offset table, so
1575 both the dynamic object and the regular object will refer to the
1576 same memory location for the variable. */
1577
0451c93c 1578 htab = elf_s390_hash_table (info);
a85d7ed0 1579
0451c93c
MS		 1580 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1581 copy the initial value out of the dynamic object and into the
1582 runtime process image. */
5474d94f
AM		 1583 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1584 {
1585 s = htab->elf.sdynrelro;
1586 srel = htab->elf.sreldynrelro;
1587 }
1588 else
1589 {
1590 s = htab->elf.sdynbss;
1591 srel = htab->elf.srelbss;
1592 }
1d7e9d18 1593 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1594 {
5474d94f 1595 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 1596 h->needs_copy = 1;
a85d7ed0
NC		 1597 }
1598
6cabe1ea 1599 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a85d7ed0
NC		 1600}
1601
0451c93c
MS		 1602/* Allocate space in .plt, .got and associated reloc sections for
1603 dynamic relocs. */
1604
b34976b6 1605static bfd_boolean
2c3fc389 1606allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1607{
1608 struct bfd_link_info *info;
1609 struct elf_s390_link_hash_table *htab;
470b557a 1610 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1611 struct elf_dyn_relocs *p;
0451c93c 1612
e92d460e 1613 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1614 return TRUE;
0451c93c
MS		 1615
1616 info = (struct bfd_link_info *) inf;
1617 htab = elf_s390_hash_table (info);
1618
470b557a
AK		 1619 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1620 here if it is defined and referenced in a non-shared object. */
1621 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
61643fba 1622 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
470b557a
AK		 1623 else if (htab->elf.dynamic_sections_created
1624 && h->plt.refcount > 0)
0451c93c
MS		 1625 {
1626 /* Make sure this symbol is output as a dynamic symbol.
1627 Undefined weak syms won't yet be marked as dynamic. */
1628 if (h->dynindx == -1
f5385ebf 1629 && !h->forced_local)
0451c93c 1630 {
c152c796 1631 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1632 return FALSE;
0451c93c
MS		 1633 }
1634
0e1862bb 1635 if (bfd_link_pic (info)
4ec72bde 1636 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1637 {
f41345a7 1638 asection *s = htab->elf.splt;
0451c93c
MS		 1639
1640 /* If this is the first .plt entry, make room for the special
1641 first entry. */
eea6121a
AM		 1642 if (s->size == 0)
1643 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1644
eea6121a 1645 h->plt.offset = s->size;
0451c93c
MS		 1646
1647 /* If this symbol is not defined in a regular file, and we are
1648 not generating a shared library, then set the symbol to this
1649 location in the .plt. This is required to make function
1650 pointers compare as equal between the normal executable and
1651 the shared library. */
0e1862bb 1652 if (! bfd_link_pic (info)
f5385ebf 1653 && !h->def_regular)
0451c93c
MS		 1654 {
1655 h->root.u.def.section = s;
1656 h->root.u.def.value = h->plt.offset;
1657 }
ec338859 1658
0451c93c 1659 /* Make room for this entry. */
eea6121a 1660 s->size += PLT_ENTRY_SIZE;
ec338859 1661
0451c93c
MS		 1662 /* We also need to make an entry in the .got.plt section, which
1663 will be placed in the .got section by the linker script. */
f41345a7 1664 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1665
1666 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1667 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1668 }
1669 else
1670 {
1671 h->plt.offset = (bfd_vma) -1;
f5385ebf 1672 h->needs_plt = 0;
5236c819 1673 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c 1674 }
ec338859 1675 }
0451c93c
MS		 1676 else
1677 {
1678 h->plt.offset = (bfd_vma) -1;
f5385ebf 1679 h->needs_plt = 0;
5236c819 1680 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
ec338859
AM		 1681 }
1682
69fc87f1
MS		 1683 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1684 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1685 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1686 we can save the dynamic TLS relocation. */
1687 if (h->got.refcount > 0
0e1862bb 1688 && !bfd_link_pic (info)
69fc87f1
MS		 1689 && h->dynindx == -1
1690 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
0451c93c 1691 {
69fc87f1
MS		 1692 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1693 /* For the GOTIE access without a literal pool entry the offset has
1694 to be stored somewhere. The immediate value in the instruction
1695 is not bit enough so the value is stored in the got. */
1696 {
f41345a7
AK		 1697 h->got.offset = htab->elf.sgot->size;
1698 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1699 }
1700 else
1701 h->got.offset = (bfd_vma) -1;
1702 }
1703 else if (h->got.refcount > 0)
ceada896 1704 {
0451c93c 1705 asection *s;
b34976b6 1706 bfd_boolean dyn;
69fc87f1 1707 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1708
1709 /* Make sure this symbol is output as a dynamic symbol.
1710 Undefined weak syms won't yet be marked as dynamic. */
1711 if (h->dynindx == -1
f5385ebf 1712 && !h->forced_local)
0451c93c 1713 {
c152c796 1714 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1715 return FALSE;
0451c93c
MS		 1716 }
1717
f41345a7 1718 s = htab->elf.sgot;
eea6121a
AM		 1719 h->got.offset = s->size;
1720 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1721 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1722 if (tls_type == GOT_TLS_GD)
eea6121a 1723 s->size += GOT_ENTRY_SIZE;
0451c93c 1724 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1725 /* R_390_TLS_IE32 needs one dynamic relocation,
1726 R_390_TLS_GD32 needs one if local symbol and two if global. */
1727 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1728 || tls_type >= GOT_TLS_IE)
f41345a7 1729 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1 1730 else if (tls_type == GOT_TLS_GD)
f41345a7 1731 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela);
82058a73
MS		 1732 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1733 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 1734 && (bfd_link_pic (info)
82058a73 1735 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1736 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1737 }
1738 else
1739 h->got.offset = (bfd_vma) -1;
1740
0451c93c 1741 if (eh->dyn_relocs == NULL)
b34976b6 1742 return TRUE;
0451c93c
MS		 1743
1744 /* In the shared -Bsymbolic case, discard space allocated for
1745 dynamic pc-relative relocs against symbols which turn out to be
1746 defined in regular objects. For the normal shared case, discard
1747 space for pc-relative relocs that have become local due to symbol
1748 visibility changes. */
1749
0e1862bb 1750 if (bfd_link_pic (info))
0451c93c 1751 {
8c21ca21 1752 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1753 {
00d8c7a9 1754 struct elf_dyn_relocs **pp;
0451c93c
MS		 1755
1756 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1757 {
1758 p->count -= p->pc_count;
1759 p->pc_count = 0;
1760 if (p->count == 0)
1761 *pp = p->next;
1762 else
1763 pp = &p->next;
1764 }
1765 }
82058a73
MS		 1766
1767 /* Also discard relocs on undefined weak syms with non-default
1768 visibility. */
22d606e9 1769 if (eh->dyn_relocs != NULL
82058a73 1770 && h->root.type == bfd_link_hash_undefweak)
22d606e9 1771 {
b27bb18f
L		 1772 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1773 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
22d606e9
AM		 1774 eh->dyn_relocs = NULL;
1775
1776 /* Make sure undefined weak symbols are output as a dynamic
1777 symbol in PIEs. */
1778 else if (h->dynindx == -1
1779 && !h->forced_local)
1780 {
1781 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1782 return FALSE;
1783 }
1784 }
0451c93c 1785 }
64285810 1786 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1787 {
1788 /* For the non-shared case, discard space for relocs against
1789 symbols which turn out to need copy relocs or are not
1790 dynamic. */
1791
f5385ebf
AM		 1792 if (!h->non_got_ref
1793 && ((h->def_dynamic
1794 && !h->def_regular)
0451c93c
MS		 1795 || (htab->elf.dynamic_sections_created
1796 && (h->root.type == bfd_link_hash_undefweak
1797 || h->root.type == bfd_link_hash_undefined))))
1798 {
1799 /* Make sure this symbol is output as a dynamic symbol.
1800 Undefined weak syms won't yet be marked as dynamic. */
1801 if (h->dynindx == -1
f5385ebf 1802 && !h->forced_local)
0451c93c 1803 {
c152c796 1804 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1805 return FALSE;
0451c93c
MS		 1806 }
1807
1808 /* If that succeeded, we know we'll be keeping all the
1809 relocs. */
1810 if (h->dynindx != -1)
1811 goto keep;
1812 }
1813
1814 eh->dyn_relocs = NULL;
1815
ec338859 1816 keep: ;
0451c93c
MS		 1817 }
1818
1819 /* Finally, allocate space. */
1820 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1821 {
1822 asection *sreloc = elf_section_data (p->sec)->sreloc;
ae9a127f 1823
eea6121a 1824 sreloc->size += p->count * sizeof (Elf32_External_Rela);
0451c93c
MS		 1825 }
1826
b34976b6 1827 return TRUE;
0451c93c
MS		 1828}
1829
1830/* Find any dynamic relocs that apply to read-only sections. */
1831
b34976b6 1832static bfd_boolean
2c3fc389 1833readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1834{
1835 struct elf_s390_link_hash_entry *eh;
00d8c7a9 1836 struct elf_dyn_relocs *p;
0451c93c
MS		 1837
1838 eh = (struct elf_s390_link_hash_entry *) h;
1839 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1840 {
1841 asection *s = p->sec->output_section;
1842
1843 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1844 {
1845 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1846
1847 info->flags |= DF_TEXTREL;
1848
1849 /* Not an error, just cut short the traversal. */
b34976b6 1850 return FALSE;
0451c93c
MS		 1851 }
1852 }
b34976b6 1853 return TRUE;
0451c93c
MS		 1854}
1855
a85d7ed0
NC		 1856/* Set the sizes of the dynamic sections. */
1857
b34976b6 1858static bfd_boolean
2c3fc389
NC		 1859elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1860 struct bfd_link_info *info)
a85d7ed0 1861{
0451c93c 1862 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1863 bfd *dynobj;
1864 asection *s;
b34976b6 1865 bfd_boolean relocs;
0451c93c 1866 bfd *ibfd;
a85d7ed0 1867
0451c93c
MS		 1868 htab = elf_s390_hash_table (info);
1869 dynobj = htab->elf.dynobj;
1870 if (dynobj == NULL)
1871 abort ();
a85d7ed0 1872
0451c93c 1873 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1874 {
1875 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 1876 if (bfd_link_executable (info) && !info->nointerp)
a85d7ed0 1877 {
3d4d4302 1878 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 1879 if (s == NULL)
1880 abort ();
eea6121a 1881 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 1882 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1883 }
1884 }
a85d7ed0 1885
0451c93c
MS		 1886 /* Set up .got offsets for local syms, and space for local dynamic
1887 relocs. */
c72f2fb2 1888 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a85d7ed0 1889 {
0451c93c
MS		 1890 bfd_signed_vma *local_got;
1891 bfd_signed_vma *end_local_got;
69fc87f1 1892 char *local_tls_type;
0451c93c
MS		 1893 bfd_size_type locsymcount;
1894 Elf_Internal_Shdr *symtab_hdr;
1895 asection *srela;
470b557a
AK		 1896 struct plt_entry *local_plt;
1897 unsigned int i;
a85d7ed0 1898
0ffa91dd 1899 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 1900 continue;
1901
0451c93c 1902 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 1903 {
00d8c7a9 1904 struct elf_dyn_relocs *p;
0451c93c 1905
6edfbbad 1906 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 1907 {
ec338859
AM		 1908 if (!bfd_is_abs_section (p->sec)
1909 && bfd_is_abs_section (p->sec->output_section))
1910 {
1911 /* Input section has been discarded, either because
1912 it is a copy of a linkonce section or due to
1913 linker script /DISCARD/, so we'll be discarding
1914 the relocs too. */
1915 }
248866a8 1916 else if (p->count != 0)
ec338859
AM		 1917 {
1918 srela = elf_section_data (p->sec)->sreloc;
eea6121a 1919 srela->size += p->count * sizeof (Elf32_External_Rela);
248866a8
AM		 1920 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1921 info->flags |= DF_TEXTREL;
ec338859 1922 }
a85d7ed0
NC		 1923 }
1924 }
0451c93c
MS		 1925
1926 local_got = elf_local_got_refcounts (ibfd);
1927 if (!local_got)
1928 continue;
1929
0ffa91dd 1930 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 1931 locsymcount = symtab_hdr->sh_info;
1932 end_local_got = local_got + locsymcount;
69fc87f1 1933 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 1934 s = htab->elf.sgot;
1935 srela = htab->elf.srelgot;
69fc87f1 1936 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 1937 {
0451c93c 1938 if (*local_got > 0)
a85d7ed0 1939 {
eea6121a
AM		 1940 *local_got = s->size;
1941 s->size += GOT_ENTRY_SIZE;
69fc87f1 1942 if (*local_tls_type == GOT_TLS_GD)
eea6121a 1943 s->size += GOT_ENTRY_SIZE;
0e1862bb 1944 if (bfd_link_pic (info))
eea6121a 1945 srela->size += sizeof (Elf32_External_Rela);
a85d7ed0
NC		 1946 }
1947 else
0451c93c
MS		 1948 *local_got = (bfd_vma) -1;
1949 }
470b557a
AK		 1950 local_plt = elf_s390_local_plt (ibfd);
1951 for (i = 0; i < symtab_hdr->sh_info; i++)
1952 {
1953 if (local_plt[i].plt.refcount > 0)
1954 {
1955 local_plt[i].plt.offset = htab->elf.iplt->size;
1956 htab->elf.iplt->size += PLT_ENTRY_SIZE;
1957 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
1958 htab->elf.irelplt->size += RELA_ENTRY_SIZE;
1959 }
1960 else
1961 local_plt[i].plt.offset = (bfd_vma) -1;
1962 }
0451c93c
MS		 1963 }
1964
69fc87f1
MS		 1965 if (htab->tls_ldm_got.refcount > 0)
1966 {
1967 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
1968 relocs. */
f41345a7
AK		 1969 htab->tls_ldm_got.offset = htab->elf.sgot->size;
1970 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
1971 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1
MS		 1972 }
1973 else
1974 htab->tls_ldm_got.offset = -1;
1975
0451c93c
MS		 1976 /* Allocate global sym .plt and .got entries, and space for global
1977 sym dynamic relocs. */
2c3fc389 1978 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 1979
1980 /* We now have determined the sizes of the various dynamic sections.
1981 Allocate memory for them. */
b34976b6 1982 relocs = FALSE;
0451c93c
MS		 1983 for (s = dynobj->sections; s != NULL; s = s->next)
1984 {
1985 if ((s->flags & SEC_LINKER_CREATED) == 0)
1986 continue;
1987
f41345a7
AK		 1988 if (s == htab->elf.splt
1989 || s == htab->elf.sgot
1990 || s == htab->elf.sgotplt
9d19e4fd 1991 || s == htab->elf.sdynbss
5474d94f 1992 || s == htab->elf.sdynrelro
470b557a
AK		 1993 || s == htab->elf.iplt
1994 || s == htab->elf.igotplt
1995 || s == htab->irelifunc)
0451c93c
MS		 1996 {
1997 /* Strip this section if we don't need it; see the
1998 comment below. */
a85d7ed0 1999 }
0112cd26 2000 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 2001 {
eea6121a 2002 if (s->size != 0)
b34976b6 2003 relocs = TRUE;
ec338859 2004
0451c93c
MS		 2005 /* We use the reloc_count field as a counter if we need
2006 to copy relocs into the output file. */
2007 s->reloc_count = 0;
2008 }
2009 else
a85d7ed0
NC		 2010 {
2011 /* It's not one of our sections, so don't allocate space. */
2012 continue;
2013 }
2014
eea6121a 2015 if (s->size == 0)
a85d7ed0 2016 {
0451c93c
MS		 2017 /* If we don't need this section, strip it from the
2018 output file. This is to handle .rela.bss and
2019 .rela.plt. We must create it in
2020 create_dynamic_sections, because it must be created
2021 before the linker maps input sections to output
2022 sections. The linker does that before
2023 adjust_dynamic_symbol is called, and it is that
2024 function which decides whether anything needs to go
2025 into these sections. */
2026
8423293d 2027 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 2028 continue;
2029 }
2030
c456f082
AM		 2031 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2032 continue;
2033
0451c93c
MS		 2034 /* Allocate memory for the section contents. We use bfd_zalloc
2035 here in case unused entries are not reclaimed before the
2036 section's contents are written out. This should not happen,
2037 but this way if it does, we get a R_390_NONE reloc instead
2038 of garbage. */
eea6121a 2039 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 2040 if (s->contents == NULL)
b34976b6 2041 return FALSE;
a85d7ed0 2042 }
ec338859 2043
0451c93c 2044 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2045 {
2046 /* Add some entries to the .dynamic section. We fill in the
2047 values later, in elf_s390_finish_dynamic_sections, but we
2048 must add the entries now so that we get the correct size for
2049 the .dynamic section. The DT_DEBUG entry is filled in by the
2050 dynamic linker and used by the debugger. */
dc810e39 2051#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2052 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
ec338859 2053
0e1862bb 2054 if (bfd_link_executable (info))
a85d7ed0 2055 {
dc810e39 2056 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2057 return FALSE;
a85d7ed0 2058 }
ec338859 2059
f41345a7 2060 if (htab->elf.splt->size != 0)
a85d7ed0 2061 {
dc810e39
AM		 2062 if (!add_dynamic_entry (DT_PLTGOT, 0)
2063 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2064 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2065 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2066 return FALSE;
a85d7ed0 2067 }
ec338859 2068
a85d7ed0 2069 if (relocs)
26e41594
AM		 2070 {
2071 if (!add_dynamic_entry (DT_RELA, 0)
2072 || !add_dynamic_entry (DT_RELASZ, 0)
2073 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 2074 return FALSE;
a85d7ed0 2075
0451c93c
MS		 2076 /* If any dynamic relocs apply to a read-only section,
2077 then we need a DT_TEXTREL entry. */
248866a8 2078 if ((info->flags & DF_TEXTREL) == 0)
2c3fc389 2079 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
ec338859 2080
0451c93c
MS		 2081 if ((info->flags & DF_TEXTREL) != 0)
2082 {
2083 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2084 return FALSE;
0451c93c 2085 }
a85d7ed0
NC		 2086 }
2087 }
dc810e39 2088#undef add_dynamic_entry
ec338859 2089
b34976b6 2090 return TRUE;
a85d7ed0
NC		 2091}
2092
69fc87f1
MS		 2093/* Return the base VMA address which should be subtracted from real addresses
2094 when resolving @dtpoff relocation.
2095 This is PT_TLS segment p_vaddr. */
2096
2097static bfd_vma
2c3fc389 2098dtpoff_base (struct bfd_link_info *info)
69fc87f1 2099{
e1918d23
AM		 2100 /* If tls_sec is NULL, we should have signalled an error already. */
2101 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2102 return 0;
e1918d23 2103 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2104}
2105
2106/* Return the relocation value for @tpoff relocation
2107 if STT_TLS virtual address is ADDRESS. */
2108
2109static bfd_vma
2c3fc389 2110tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2111{
e1918d23 2112 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2113
e1918d23
AM		 2114 /* If tls_sec is NULL, we should have signalled an error already. */
2115 if (htab->tls_sec == NULL)
69fc87f1 2116 return 0;
e1918d23 2117 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2118}
2119
2120/* Complain if TLS instruction relocation is against an invalid
2121 instruction. */
2122
2123static void
2c3fc389
NC		 2124invalid_tls_insn (bfd *input_bfd,
2125 asection *input_section,
2126 Elf_Internal_Rela *rel)
69fc87f1
MS		 2127{
2128 reloc_howto_type *howto;
2129
2130 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
4eca0228 2131 _bfd_error_handler
695344c0 2132 /* xgettext:c-format */
d42c267e 2133 (_("%B(%A+%#Lx): invalid instruction for TLS relocation %s"),
d003868e
AM		 2134 input_bfd,
2135 input_section,
d42c267e 2136 rel->r_offset,
69fc87f1 2137 howto->name);
77df2968 2138 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2139}
2140
a85d7ed0
NC		 2141/* Relocate a 390 ELF section. */
2142
b34976b6 2143static bfd_boolean
2c3fc389
NC		 2144elf_s390_relocate_section (bfd *output_bfd,
2145 struct bfd_link_info *info,
2146 bfd *input_bfd,
2147 asection *input_section,
2148 bfd_byte *contents,
2149 Elf_Internal_Rela *relocs,
2150 Elf_Internal_Sym *local_syms,
2151 asection **local_sections)
a85d7ed0 2152{
0451c93c 2153 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2154 Elf_Internal_Shdr *symtab_hdr;
2155 struct elf_link_hash_entry **sym_hashes;
2156 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2157 Elf_Internal_Rela *rel;
2158 Elf_Internal_Rela *relend;
2159
0ffa91dd
NC		 2160 BFD_ASSERT (is_s390_elf (input_bfd));
2161
0451c93c 2162 htab = elf_s390_hash_table (info);
0ffa91dd 2163 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2164 sym_hashes = elf_sym_hashes (input_bfd);
2165 local_got_offsets = elf_local_got_offsets (input_bfd);
2166
a85d7ed0
NC		 2167 rel = relocs;
2168 relend = relocs + input_section->reloc_count;
2169 for (; rel < relend; rel++)
2170 {
5236c819 2171 unsigned int r_type;
a85d7ed0
NC		 2172 reloc_howto_type *howto;
2173 unsigned long r_symndx;
2174 struct elf_link_hash_entry *h;
2175 Elf_Internal_Sym *sym;
2176 asection *sec;
0451c93c 2177 bfd_vma off;
a85d7ed0 2178 bfd_vma relocation;
b34976b6 2179 bfd_boolean unresolved_reloc;
a85d7ed0 2180 bfd_reloc_status_type r;
69fc87f1 2181 int tls_type;
470b557a 2182 asection *base_got = htab->elf.sgot;
b27bb18f 2183 bfd_boolean resolved_to_zero;
ec338859 2184
a85d7ed0
NC		 2185 r_type = ELF32_R_TYPE (rel->r_info);
2186 if (r_type == (int) R_390_GNU_VTINHERIT
26e41594
AM		 2187 || r_type == (int) R_390_GNU_VTENTRY)
2188 continue;
5236c819 2189 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2190 {
2191 bfd_set_error (bfd_error_bad_value);
b34976b6 2192 return FALSE;
a85d7ed0 2193 }
ec338859 2194
b491616a 2195 howto = elf_howto_table + r_type;
a85d7ed0 2196 r_symndx = ELF32_R_SYM (rel->r_info);
5236c819 2197
a85d7ed0
NC		 2198 h = NULL;
2199 sym = NULL;
2200 sec = NULL;
b34976b6 2201 unresolved_reloc = FALSE;
a85d7ed0
NC		 2202 if (r_symndx < symtab_hdr->sh_info)
2203 {
2204 sym = local_syms + r_symndx;
2205 sec = local_sections[r_symndx];
470b557a
AK		 2206 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2207 {
2208 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2209 if (local_plt == NULL)
2210 return FALSE;
2211
2212 /* Address of the PLT slot. */
2213 relocation = (htab->elf.iplt->output_section->vma
2214 + htab->elf.iplt->output_offset
2215 + local_plt[r_symndx].plt.offset);
2216
2217 switch (r_type)
2218 {
31db78f6
AK		 2219 case R_390_PLTOFF16:
2220 case R_390_PLTOFF32:
2221 relocation -= htab->elf.sgot->output_section->vma;
2222 break;
470b557a
AK		 2223 case R_390_GOTPLT12:
2224 case R_390_GOTPLT16:
2225 case R_390_GOTPLT20:
2226 case R_390_GOTPLT32:
2227 case R_390_GOTPLTENT:
2228 case R_390_GOT12:
2229 case R_390_GOT16:
2230 case R_390_GOT20:
2231 case R_390_GOT32:
2232 case R_390_GOTENT:
2233 {
2234 /* Write the PLT slot address into the GOT slot. */
2235 bfd_put_32 (output_bfd, relocation,
2236 htab->elf.sgot->contents +
2237 local_got_offsets[r_symndx]);
2238 relocation = (local_got_offsets[r_symndx] +
2239 htab->elf.sgot->output_offset);
2240
2241 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2242 relocation += htab->elf.sgot->output_section->vma;
2243 break;
2244 }
2245 default:
2246 break;
2247 }
2248 /* The output section is needed later in
2249 finish_dynamic_section when creating the dynamic
2250 relocation. */
2251 local_plt[r_symndx].sec = sec;
2252 goto do_relocation;
2253 }
2254 else
2255 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2256 }
2257 else
2258 {
560e09e9 2259 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2260 bfd_boolean ignored ATTRIBUTE_UNUSED;
ec338859 2261
b2a8e766
AM		 2262 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2263 r_symndx, symtab_hdr, sym_hashes,
2264 h, sec, relocation,
62d887d4 2265 unresolved_reloc, warned, ignored);
a85d7ed0 2266 }
ec338859 2267
dbaa2011 2268 if (sec != NULL && discarded_section (sec))
e4067dbb 2269 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2270 rel, 1, relend, howto, 0, contents);
ab96bf03 2271
0e1862bb 2272 if (bfd_link_relocatable (info))
ab96bf03
AM		 2273 continue;
2274
b27bb18f
L		 2275 resolved_to_zero = (h != NULL
2276 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
2277
a85d7ed0
NC		 2278 switch (r_type)
2279 {
5236c819
MS		 2280 case R_390_GOTPLT12:
2281 case R_390_GOTPLT16:
bd1ea41b 2282 case R_390_GOTPLT20:
5236c819
MS		 2283 case R_390_GOTPLT32:
2284 case R_390_GOTPLTENT:
2285 /* There are three cases for a GOTPLT relocation. 1) The
2286 relocation is against the jump slot entry of a plt that
2287 will get emitted to the output file. 2) The relocation
2288 is against the jump slot of a plt entry that has been
2289 removed. elf_s390_adjust_gotplt has created a GOT entry
2290 as replacement. 3) The relocation is against a local symbol.
2291 Cases 2) and 3) are the same as the GOT relocation code
2292 so we just have to test for case 1 and fall through for
2293 the other two. */
2294 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2295 {
2296 bfd_vma plt_index;
2297
470b557a
AK		 2298 if (s390_is_ifunc_symbol_p (h))
2299 {
2300 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2301 relocation = (plt_index * GOT_ENTRY_SIZE +
2302 htab->elf.igotplt->output_offset);
2303 if (r_type == R_390_GOTPLTENT)
2304 relocation += htab->elf.igotplt->output_section->vma;
2305 }
2306 else
2307 {
2308 /* Calc. index no.
2309 Current offset - size first entry / entry size. */
2310 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2311 PLT_ENTRY_SIZE;
2312
2313 /* Offset in GOT is PLT index plus GOT headers(3)
2314 times 4, addr & GOT addr. */
2315 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2316 if (r_type == R_390_GOTPLTENT)
2317 relocation += htab->elf.sgot->output_section->vma;
2318 }
5236c819
MS		 2319 unresolved_reloc = FALSE;
2320
5236c819
MS		 2321 }
2322 /* Fall through. */
2323
26e41594
AM		 2324 case R_390_GOT12:
2325 case R_390_GOT16:
bd1ea41b 2326 case R_390_GOT20:
26e41594 2327 case R_390_GOT32:
befc3abb 2328 case R_390_GOTENT:
26e41594
AM		 2329 /* Relocation is to the entry for this symbol in the global
2330 offset table. */
470b557a 2331 if (base_got == NULL)
0451c93c 2332 abort ();
ec338859 2333
26e41594
AM		 2334 if (h != NULL)
2335 {
b34976b6 2336 bfd_boolean dyn;
ec338859 2337
26e41594 2338 off = h->got.offset;
0451c93c 2339 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2340
2341 if (s390_is_ifunc_symbol_p (h))
2342 {
2343 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2344 if (off == (bfd_vma)-1)
2345 {
2346 /* No explicit GOT usage so redirect to the
2347 got.iplt slot. */
2348 base_got = htab->elf.igotplt;
2349 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2350 }
2351 else
2352 {
2353 /* Explicit GOT slots must contain the address
2354 of the PLT slot. This will be handled in
2355 finish_dynamic_symbol. */
2356 }
2357 }
0e1862bb
L		 2358 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2359 bfd_link_pic (info),
2360 h)
2361 || (bfd_link_pic (info)
470b557a
AK		 2362 && SYMBOL_REFERENCES_LOCAL (info, h))
2363 || (ELF_ST_VISIBILITY (h->other)
2364 && h->root.type == bfd_link_hash_undefweak))
2365
26e41594
AM		 2366 {
2367 /* This is actually a static link, or it is a
2368 -Bsymbolic link and the symbol is defined
2369 locally, or the symbol was forced to be local
2370 because of a version file. We must initialize
2371 this entry in the global offset table. Since the
2372 offset must always be a multiple of 2, we use the
2373 least significant bit to record whether we have
2374 initialized it already.
2375
2376 When doing a dynamic link, we create a .rel.got
2377 relocation entry to initialize the value. This
2378 is done in the finish_dynamic_symbol routine. */
2379 if ((off & 1) != 0)
2380 off &= ~1;
2381 else
2382 {
a85d7ed0 2383 bfd_put_32 (output_bfd, relocation,
470b557a 2384 base_got->contents + off);
26e41594
AM		 2385 h->got.offset |= 1;
2386 }
a63cc5f7
AK		 2387
2388 if ((h->def_regular
0e1862bb 2389 && bfd_link_pic (info)
a63cc5f7
AK		 2390 && SYMBOL_REFERENCES_LOCAL (info, h))
2391 /* lrl rx,sym@GOTENT -> larl rx, sym */
2392 && ((r_type == R_390_GOTENT
2393 && (bfd_get_16 (input_bfd,
2394 contents + rel->r_offset - 2)
2395 & 0xff0f) == 0xc40d)
2396 /* ly rx, sym@GOT(r12) -> larl rx, sym */
2397 || (r_type == R_390_GOT20
2398 && (bfd_get_32 (input_bfd,
2399 contents + rel->r_offset - 2)
2400 & 0xff00f000) == 0xe300c000
2401 && bfd_get_8 (input_bfd,
2402 contents + rel->r_offset + 3) == 0x58)))
2403 {
2404 unsigned short new_insn =
2405 (0xc000 | (bfd_get_8 (input_bfd,
2406 contents + rel->r_offset - 1) & 0xf0));
2407 bfd_put_16 (output_bfd, new_insn,
2408 contents + rel->r_offset - 2);
2409 r_type = R_390_PC32DBL;
2410 rel->r_addend = 2;
2411 howto = elf_howto_table + r_type;
2412 relocation = h->root.u.def.value
2413 + h->root.u.def.section->output_section->vma
2414 + h->root.u.def.section->output_offset;
2415 goto do_relocation;
2416 }
26e41594 2417 }
0451c93c 2418 else
b34976b6 2419 unresolved_reloc = FALSE;
26e41594
AM		 2420 }
2421 else
2422 {
0451c93c
MS		 2423 if (local_got_offsets == NULL)
2424 abort ();
a85d7ed0 2425
26e41594 2426 off = local_got_offsets[r_symndx];
a85d7ed0 2427
26e41594
AM		 2428 /* The offset must always be a multiple of 4. We use
2429 the least significant bit to record whether we have
2430 already generated the necessary reloc. */
2431 if ((off & 1) != 0)
2432 off &= ~1;
2433 else
2434 {
2435 bfd_put_32 (output_bfd, relocation,
f41345a7 2436 htab->elf.sgot->contents + off);
a85d7ed0 2437
0e1862bb 2438 if (bfd_link_pic (info))
26e41594
AM		 2439 {
2440 asection *srelgot;
2441 Elf_Internal_Rela outrel;
947216bf 2442 bfd_byte *loc;
a85d7ed0 2443
f41345a7 2444 srelgot = htab->elf.srelgot;
0451c93c
MS		 2445 if (srelgot == NULL)
2446 abort ();
a85d7ed0 2447
f41345a7
AK		 2448 outrel.r_offset = (htab->elf.sgot->output_section->vma
2449 + htab->elf.sgot->output_offset
26e41594
AM		 2450 + off);
2451 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2452 outrel.r_addend = relocation;
947216bf
AM		 2453 loc = srelgot->contents;
2454 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
26e41594
AM		 2455 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2456 }
a85d7ed0 2457
26e41594
AM		 2458 local_got_offsets[r_symndx] |= 1;
2459 }
2460 }
a85d7ed0 2461
0451c93c
MS		 2462 if (off >= (bfd_vma) -2)
2463 abort ();
a85d7ed0 2464
470b557a 2465 relocation = base_got->output_offset + off;
befc3abb 2466
ae9a127f
NC		 2467 /* For @GOTENT the relocation is against the offset between
2468 the instruction and the symbols entry in the GOT and not
2469 between the start of the GOT and the symbols entry. We
2470 add the vma of the GOT to get the correct value. */
5236c819
MS		 2471 if ( r_type == R_390_GOTENT
2472 || r_type == R_390_GOTPLTENT)
470b557a 2473 relocation += base_got->output_section->vma;
befc3abb 2474
26e41594 2475 break;
dc810e39 2476
5236c819 2477 case R_390_GOTOFF16:
26e41594
AM		 2478 case R_390_GOTOFF32:
2479 /* Relocation is relative to the start of the global offset
2480 table. */
2481
01a53584
AK		 2482 if (h != NULL
2483 && s390_is_ifunc_symbol_p (h)
2484 && h->def_regular
2485 && !bfd_link_executable (info))
2486 {
2487 relocation = (htab->elf.iplt->output_section->vma
2488 + htab->elf.iplt->output_offset
2489 + h->plt.offset
2490 - htab->elf.sgot->output_section->vma);
2491 goto do_relocation;
2492 }
2493
26e41594
AM		 2494 /* Note that sgot->output_offset is not involved in this
2495 calculation. We always want the start of .got. If we
2496 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2497 permitted by the ABI, we might have to change this
2498 calculation. */
f41345a7 2499 relocation -= htab->elf.sgot->output_section->vma;
26e41594
AM		 2500 break;
2501
2502 case R_390_GOTPC:
befc3abb 2503 case R_390_GOTPCDBL:
26e41594 2504 /* Use global offset table as symbol value. */
f41345a7 2505 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2506 unresolved_reloc = FALSE;
26e41594 2507 break;
a85d7ed0 2508
fb798c50 2509 case R_390_PLT12DBL:
26e41594 2510 case R_390_PLT16DBL:
fb798c50 2511 case R_390_PLT24DBL:
26e41594
AM		 2512 case R_390_PLT32DBL:
2513 case R_390_PLT32:
2514 /* Relocation is to the entry for this symbol in the
2515 procedure linkage table. */
a85d7ed0 2516
26e41594
AM		 2517 /* Resolve a PLT32 reloc against a local symbol directly,
2518 without using the procedure linkage table. */
2519 if (h == NULL)
2520 break;
a85d7ed0 2521
26e41594 2522 if (h->plt.offset == (bfd_vma) -1
470b557a 2523 || (htab->elf.splt == NULL && htab->elf.iplt == NULL))
26e41594
AM		 2524 {
2525 /* We didn't make a PLT entry for this symbol. This
2526 happens when statically linking PIC code, or when
2527 using -Bsymbolic. */
2528 break;
2529 }
2530
470b557a
AK		 2531 if (s390_is_ifunc_symbol_p (h))
2532 relocation = (htab->elf.iplt->output_section->vma
2533 + htab->elf.iplt->output_offset
2534 + h->plt.offset);
2535 else
2536 relocation = (htab->elf.splt->output_section->vma
2537 + htab->elf.splt->output_offset
2538 + h->plt.offset);
b34976b6 2539 unresolved_reloc = FALSE;
26e41594 2540 break;
a85d7ed0 2541
5236c819
MS		 2542 case R_390_PLTOFF16:
2543 case R_390_PLTOFF32:
26e41594
AM		 2544 /* Relocation is to the entry for this symbol in the
2545 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2546
2547 /* For local symbols or if we didn't make a PLT entry for
2548 this symbol resolve the symbol directly. */
31db78f6 2549 if (h == NULL
5236c819 2550 || h->plt.offset == (bfd_vma) -1
31db78f6 2551 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2552 {
f41345a7 2553 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS		 2554 break;
2555 }
2556
470b557a
AK		 2557 if (s390_is_ifunc_symbol_p (h))
2558 relocation = (htab->elf.iplt->output_section->vma
2559 + htab->elf.iplt->output_offset
2560 + h->plt.offset
2561 - htab->elf.sgot->output_section->vma);
2562 else
2563 relocation = (htab->elf.splt->output_section->vma
2564 + htab->elf.splt->output_offset
2565 + h->plt.offset
2566 - htab->elf.sgot->output_section->vma);
5236c819 2567 unresolved_reloc = FALSE;
26e41594
AM		 2568 break;
2569
26e41594 2570 case R_390_PC16:
fb798c50 2571 case R_390_PC12DBL:
26e41594 2572 case R_390_PC16DBL:
fb798c50 2573 case R_390_PC24DBL:
26e41594
AM		 2574 case R_390_PC32DBL:
2575 case R_390_PC32:
99ba5125
AK		 2576 if (h != NULL
2577 && s390_is_ifunc_symbol_p (h)
2578 && h->def_regular
2579 && !bfd_link_executable (info))
2580 {
2581 /* This will not work our if the function does not
2582 happen to set up the GOT pointer for some other
2583 reason. 31 bit PLT entries require r12 to hold the
2584 GOT pointer.
2585 FIXME: Implement an errorcheck.
2586 NOTE: It will work when brasl is not available
2587 (e.g. with -m31 -march=g5) since a local function
2588 call then does use GOTOFF which implies r12 being set
2589 up. */
2590 relocation = (htab->elf.iplt->output_section->vma
2591 + htab->elf.iplt->output_offset
2592 + h ->plt.offset);
2593 goto do_relocation;
2594 }
1a0670f3 2595 /* Fall through. */
99ba5125
AK		 2596
2597 case R_390_8:
2598 case R_390_16:
2599 case R_390_32:
470b557a
AK		 2600 if (h != NULL
2601 && s390_is_ifunc_symbol_p (h)
2602 && h->def_regular)
2603 {
d7ab4911 2604 if (!bfd_link_pic (info))
470b557a
AK		 2605 {
2606 /* For a non-shared object STT_GNU_IFUNC symbol must
2607 go through PLT. */
2608 relocation = (htab->elf.iplt->output_section->vma
2609 + htab->elf.iplt->output_offset
2610 + h ->plt.offset);
2611 goto do_relocation;
2612 }
2613 else
2614 {
2615 /* For shared objects a runtime relocation is needed. */
2616
2617 Elf_Internal_Rela outrel;
2618 asection *sreloc;
2619
2620 /* Need a dynamic relocation to get the real function
2621 address. */
2622 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2623 info,
2624 input_section,
2625 rel->r_offset);
2626 if (outrel.r_offset == (bfd_vma) -1
2627 || outrel.r_offset == (bfd_vma) -2)
2628 abort ();
2629
2630 outrel.r_offset += (input_section->output_section->vma
2631 + input_section->output_offset);
2632
2633 if (h->dynindx == -1
2634 || h->forced_local
0e1862bb 2635 || bfd_link_executable (info))
470b557a
AK		 2636 {
2637 /* This symbol is resolved locally. */
2638 outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
2639 outrel.r_addend = (h->root.u.def.value
2640 + h->root.u.def.section->output_section->vma
2641 + h->root.u.def.section->output_offset);
2642 }
2643 else
2644 {
2645 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2646 outrel.r_addend = 0;
2647 }
2648
2649 sreloc = htab->elf.irelifunc;
2650 elf_append_rela (output_bfd, sreloc, &outrel);
2651
2652 /* If this reloc is against an external symbol, we
2653 do not want to fiddle with the addend. Otherwise,
2654 we need to include the symbol value so that it
2655 becomes an addend for the dynamic reloc. For an
2656 internal symbol, we have updated addend. */
2657 continue;
2658 }
2659 }
2660
b1e24c02 2661 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2662 break;
2663
0e1862bb 2664 if ((bfd_link_pic (info)
82058a73 2665 && (h == NULL
b27bb18f
L		 2666 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2667 && !resolved_to_zero)
82058a73 2668 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2669 && ((r_type != R_390_PC16
fb798c50 2670 && r_type != R_390_PC12DBL
0451c93c 2671 && r_type != R_390_PC16DBL
fb798c50 2672 && r_type != R_390_PC24DBL
befc3abb 2673 && r_type != R_390_PC32DBL
0451c93c 2674 && r_type != R_390_PC32)
8c21ca21 2675 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810 2676 || (ELIMINATE_COPY_RELOCS
0e1862bb 2677 && !bfd_link_pic (info)
0451c93c
MS		 2678 && h != NULL
2679 && h->dynindx != -1
f5385ebf
AM		 2680 && !h->non_got_ref
2681 && ((h->def_dynamic
2682 && !h->def_regular)
0451c93c
MS		 2683 || h->root.type == bfd_link_hash_undefweak
2684 || h->root.type == bfd_link_hash_undefined)))
26e41594
AM		 2685 {
2686 Elf_Internal_Rela outrel;
2687 bfd_boolean skip, relocate;
0451c93c 2688 asection *sreloc;
947216bf 2689 bfd_byte *loc;
ec338859 2690
0451c93c
MS		 2691 /* When generating a shared object, these relocations
2692 are copied into the output file to be resolved at run
2693 time. */
ec338859 2694
26e41594
AM		 2695 skip = FALSE;
2696 relocate = FALSE;
ec338859 2697
c629eae0
JJ		 2698 outrel.r_offset =
2699 _bfd_elf_section_offset (output_bfd, info, input_section,
2700 rel->r_offset);
2701 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2702 skip = TRUE;
0bb2d96a 2703 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2704 skip = TRUE, relocate = TRUE;
26e41594
AM		 2705 outrel.r_offset += (input_section->output_section->vma
2706 + input_section->output_offset);
ec338859 2707
26e41594 2708 if (skip)
0bb2d96a 2709 memset (&outrel, 0, sizeof outrel);
26e41594 2710 else if (h != NULL
0451c93c
MS		 2711 && h->dynindx != -1
2712 && (r_type == R_390_PC16
fb798c50 2713 || r_type == R_390_PC12DBL
0451c93c 2714 || r_type == R_390_PC16DBL
fb798c50 2715 || r_type == R_390_PC24DBL
befc3abb 2716 || r_type == R_390_PC32DBL
0451c93c 2717 || r_type == R_390_PC32
0e1862bb 2718 || !bfd_link_pic (info)
8c21ca21 2719 || !SYMBOLIC_BIND (info, h)
f5385ebf 2720 || !h->def_regular))
26e41594
AM		 2721 {
2722 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
27018c3f 2723 outrel.r_addend = rel->r_addend;
26e41594
AM		 2724 }
2725 else
2726 {
0451c93c 2727 /* This symbol is local, or marked to become local. */
90ced0dd 2728 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2729 if (r_type == R_390_32)
2730 {
2731 relocate = TRUE;
2732 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2733 }
2734 else
2735 {
2736 long sindx;
2737
90ced0dd 2738 if (bfd_is_abs_section (sec))
b5727d75
MS		 2739 sindx = 0;
2740 else if (sec == NULL || sec->owner == NULL)
2741 {
2742 bfd_set_error(bfd_error_bad_value);
2743 return FALSE;
2744 }
2745 else
2746 {
2747 asection *osec;
2748
2749 osec = sec->output_section;
2750 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2751 if (sindx == 0)
2752 {
2753 osec = htab->elf.text_index_section;
2754 sindx = elf_section_data (osec)->dynindx;
2755 }
2756 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2757
2758 /* We are turning this relocation into one
2759 against a section symbol, so subtract out
2760 the output section's address but not the
2761 offset of the input section in the output
2762 section. */
90ced0dd 2763 outrel.r_addend -= osec->vma;
b5727d75
MS		 2764 }
2765 outrel.r_info = ELF32_R_INFO (sindx, r_type);
b5727d75 2766 }
26e41594 2767 }
ec338859 2768
0451c93c
MS		 2769 sreloc = elf_section_data (input_section)->sreloc;
2770 if (sreloc == NULL)
2771 abort ();
ec338859 2772
947216bf
AM		 2773 loc = sreloc->contents;
2774 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 2775 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
ec338859 2776
26e41594
AM		 2777 /* If this reloc is against an external symbol, we do
2778 not want to fiddle with the addend. Otherwise, we
2779 need to include the symbol value so that it becomes
2780 an addend for the dynamic reloc. */
2781 if (! relocate)
2782 continue;
2783 }
0451c93c 2784 break;
ec338859 2785
69fc87f1
MS		 2786 /* Relocations for tls literal pool entries. */
2787 case R_390_TLS_IE32:
0e1862bb 2788 if (bfd_link_pic (info))
69fc87f1
MS		 2789 {
2790 Elf_Internal_Rela outrel;
2791 asection *sreloc;
2792 bfd_byte *loc;
2793
2794 outrel.r_offset = rel->r_offset
2795 + input_section->output_section->vma
2796 + input_section->output_offset;
2797 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2798 sreloc = elf_section_data (input_section)->sreloc;
2799 if (sreloc == NULL)
2800 abort ();
2801 loc = sreloc->contents;
2802 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2803 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2804 }
ae9a127f 2805 /* Fall through. */
69fc87f1
MS		 2806
2807 case R_390_TLS_GD32:
2808 case R_390_TLS_GOTIE32:
2809 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2810 tls_type = GOT_UNKNOWN;
2811 if (h == NULL && local_got_offsets)
2812 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2813 else if (h != NULL)
2814 {
2815 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb
L		 2816 if (!bfd_link_pic (info)
2817 && h->dynindx == -1
2818 && tls_type >= GOT_TLS_IE)
69fc87f1
MS		 2819 r_type = R_390_TLS_LE32;
2820 }
2821 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2822 r_type = R_390_TLS_IE32;
2823
2824 if (r_type == R_390_TLS_LE32)
2825 {
2826 /* This relocation gets optimized away by the local exec
2827 access optimization. */
2828 BFD_ASSERT (! unresolved_reloc);
2829 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2830 contents + rel->r_offset);
2831 continue;
2832 }
2833
f41345a7 2834 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2835 abort ();
2836
2837 if (h != NULL)
2838 off = h->got.offset;
2839 else
2840 {
2841 if (local_got_offsets == NULL)
2842 abort ();
2843
2844 off = local_got_offsets[r_symndx];
2845 }
2846
2847 emit_tls_relocs:
2848
2849 if ((off & 1) != 0)
2850 off &= ~1;
26e41594 2851 else
69fc87f1
MS		 2852 {
2853 Elf_Internal_Rela outrel;
2854 bfd_byte *loc;
2855 int dr_type, indx;
2856
f41345a7 2857 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2858 abort ();
2859
f41345a7
AK		 2860 outrel.r_offset = (htab->elf.sgot->output_section->vma
2861 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2862
2863 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2864 if (r_type == R_390_TLS_GD32)
2865 dr_type = R_390_TLS_DTPMOD;
2866 else
2867 dr_type = R_390_TLS_TPOFF;
2868 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2869 outrel.r_addend = relocation - dtpoff_base (info);
2870 else
2871 outrel.r_addend = 0;
2872 outrel.r_info = ELF32_R_INFO (indx, dr_type);
f41345a7
AK		 2873 loc = htab->elf.srelgot->contents;
2874 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2875 * sizeof (Elf32_External_Rela);
2876 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2877
2878 if (r_type == R_390_TLS_GD32)
2879 {
2880 if (indx == 0)
2881 {
26e41594 2882 BFD_ASSERT (! unresolved_reloc);
69fc87f1
MS		 2883 bfd_put_32 (output_bfd,
2884 relocation - dtpoff_base (info),
f41345a7 2885 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2886 }
2887 else
2888 {
2889 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
2890 outrel.r_offset += GOT_ENTRY_SIZE;
2891 outrel.r_addend = 0;
f41345a7 2892 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 2893 loc += sizeof (Elf32_External_Rela);
2894 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2895 }
2896 }
2897
2898 if (h != NULL)
2899 h->got.offset |= 1;
2900 else
2901 local_got_offsets[r_symndx] |= 1;
2902 }
2903
2904 if (off >= (bfd_vma) -2)
2905 abort ();
2906 if (r_type == ELF32_R_TYPE (rel->r_info))
2907 {
f41345a7 2908 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2909 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
f41345a7 2910 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2911 unresolved_reloc = FALSE;
2912 }
2913 else
2914 {
f41345a7 2915 bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 2916 contents + rel->r_offset);
2917 continue;
2918 }
2919 break;
2920
2921 case R_390_TLS_GOTIE12:
bd1ea41b 2922 case R_390_TLS_GOTIE20:
69fc87f1
MS		 2923 case R_390_TLS_IEENT:
2924 if (h == NULL)
2925 {
2926 if (local_got_offsets == NULL)
2927 abort();
2928 off = local_got_offsets[r_symndx];
0e1862bb 2929 if (bfd_link_pic (info))
69fc87f1
MS		 2930 goto emit_tls_relocs;
2931 }
2932 else
2933 {
2934 off = h->got.offset;
2935 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb
L		 2936 if (bfd_link_pic (info)
2937 || h->dynindx != -1
2938 || tls_type < GOT_TLS_IE)
69fc87f1
MS		 2939 goto emit_tls_relocs;
2940 }
2941
f41345a7 2942 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2943 abort ();
2944
2945 BFD_ASSERT (! unresolved_reloc);
2946 bfd_put_32 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 2947 htab->elf.sgot->contents + off);
2948 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2949 if (r_type == R_390_TLS_IEENT)
f41345a7 2950 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2951 unresolved_reloc = FALSE;
2952 break;
2953
2954 case R_390_TLS_LDM32:
0e1862bb 2955 if (! bfd_link_pic (info))
69fc87f1
MS		 2956 /* The literal pool entry this relocation refers to gets ignored
2957 by the optimized code of the local exec model. Do nothing
2958 and the value will turn out zero. */
2959 continue;
2960
f41345a7 2961 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2962 abort ();
2963
2964 off = htab->tls_ldm_got.offset;
2965 if (off & 1)
2966 off &= ~1;
2967 else
2968 {
2969 Elf_Internal_Rela outrel;
2970 bfd_byte *loc;
2971
f41345a7 2972 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2973 abort ();
2974
f41345a7
AK		 2975 outrel.r_offset = (htab->elf.sgot->output_section->vma
2976 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2977
2978 bfd_put_32 (output_bfd, 0,
f41345a7 2979 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2980 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
2981 outrel.r_addend = 0;
f41345a7
AK		 2982 loc = htab->elf.srelgot->contents;
2983 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2984 * sizeof (Elf32_External_Rela);
2985 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2986 htab->tls_ldm_got.offset |= 1;
2987 }
f41345a7 2988 relocation = htab->elf.sgot->output_offset + off;
26e41594 2989 unresolved_reloc = FALSE;
69fc87f1
MS		 2990 break;
2991
2992 case R_390_TLS_LE32:
3cbc1e5e 2993 if (bfd_link_dll (info))
69fc87f1
MS		 2994 {
2995 /* Linking a shared library with non-fpic code requires
2996 a R_390_TLS_TPOFF relocation. */
2997 Elf_Internal_Rela outrel;
2998 asection *sreloc;
2999 bfd_byte *loc;
3000 int indx;
3001
3002 outrel.r_offset = rel->r_offset
3003 + input_section->output_section->vma
3004 + input_section->output_offset;
3005 if (h != NULL && h->dynindx != -1)
3006 indx = h->dynindx;
3007 else
3008 indx = 0;
3009 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
3010 if (indx == 0)
3011 outrel.r_addend = relocation - dtpoff_base (info);
3012 else
3013 outrel.r_addend = 0;
3014 sreloc = elf_section_data (input_section)->sreloc;
3015 if (sreloc == NULL)
3016 abort ();
3017 loc = sreloc->contents;
3018 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3019 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3020 }
3021 else
3022 {
3023 BFD_ASSERT (! unresolved_reloc);
3024 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3025 contents + rel->r_offset);
3026 }
3027 continue;
3028
3029 case R_390_TLS_LDO32:
0e1862bb 3030 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 3031 relocation -= dtpoff_base (info);
3032 else
3033 /* When converting LDO to LE, we must negate. */
3034 relocation = -tpoff (info, relocation);
3035 break;
3036
3037 /* Relocations for tls instructions. */
3038 case R_390_TLS_LOAD:
3039 case R_390_TLS_GDCALL:
3040 case R_390_TLS_LDCALL:
3041 tls_type = GOT_UNKNOWN;
3042 if (h == NULL && local_got_offsets)
3043 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3044 else if (h != NULL)
3045 tls_type = elf_s390_hash_entry(h)->tls_type;
3046
3047 if (tls_type == GOT_TLS_GD)
3048 continue;
3049
3050 if (r_type == R_390_TLS_LOAD)
3051 {
0e1862bb 3052 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3053 {
3054 /* IE->LE transition. Four valid cases:
3055 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
3056 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
3057 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
3058 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3059 unsigned int insn, ry;
3060
3061 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
69fc87f1
MS		 3062 if ((insn & 0xff00f000) == 0x58000000)
3063 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
3064 ry = (insn & 0x000f0000);
3065 else if ((insn & 0xff0f0000) == 0x58000000)
3066 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
3067 ry = (insn & 0x0000f000) << 4;
3068 else if ((insn & 0xff00f000) == 0x5800c000)
3069 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
3070 ry = (insn & 0x000f0000);
3071 else if ((insn & 0xff0f0000) == 0x580c0000)
3072 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3073 ry = (insn & 0x0000f000) << 4;
3074 else
3704e358
AK		 3075 {
3076 invalid_tls_insn (input_bfd, input_section, rel);
3077 return FALSE;
3078 }
69fc87f1
MS		 3079 insn = 0x18000700 | (insn & 0x00f00000) | ry;
3080 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3081 }
3082 }
3083 else if (r_type == R_390_TLS_GDCALL)
3084 {
3085 unsigned int insn;
3086
3087 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3088 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 3089 (insn & 0xffff0000) != 0xc0e50000 &&
3090 (insn & 0xff000000) != 0x0d000000)
3704e358
AK		 3091 {
3092 invalid_tls_insn (input_bfd, input_section, rel);
3093 return FALSE;
3094 }
0e1862bb 3095 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
77df2968 3096 {
d0ddfe27
AK		 3097 if ((insn & 0xff000000) == 0x0d000000)
3098 {
3099 /* GD->LE transition.
3100 basr rx, ry -> nopr r7 */
3101 insn = 0x07070000 | (insn & 0xffff);
3102 }
3103 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 3104 {
3105 /* GD->LE transition.
3106 bas %r14,0(%rx,%r13) -> bc 0,0 */
3107 insn = 0x47000000;
3108 }
3109 else
3110 {
3111 /* GD->LE transition.
d0ddfe27 3112 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 3113 insn = 0xc0040000;
3114 bfd_put_16 (output_bfd, 0x0000,
3115 contents + rel->r_offset + 4);
3116 }
3117 }
69fc87f1 3118 else
77df2968 3119 {
d0ddfe27
AK		 3120 /* If basr is used in the pic case to invoke
3121 _tls_get_offset, something went wrong before. */
3122 if ((insn & 0xff000000) == 0x0d000000)
3704e358
AK		 3123 {
3124 invalid_tls_insn (input_bfd, input_section, rel);
3125 return FALSE;
3126 }
d0ddfe27 3127
77df2968
MS		 3128 if ((insn & 0xff000000) == 0x4d000000)
3129 {
3130 /* GD->IE transition.
3131 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3132 insn = 0x5822c000;
3133 }
3134 else
3135 {
3136 /* GD->IE transition.
3137 brasl %r14,__tls_get_addr@plt ->
3138 l %r2,0(%r2,%r12) ; bcr 0,0 */
3139 insn = 0x5822c000;
3140 bfd_put_16 (output_bfd, 0x0700,
3141 contents + rel->r_offset + 4);
3142 }
3143 }
69fc87f1
MS		 3144 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3145 }
3146 else if (r_type == R_390_TLS_LDCALL)
3147 {
0e1862bb 3148 if (!bfd_link_pic (info))
69fc87f1
MS		 3149 {
3150 unsigned int insn;
3151
3152 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3153 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 3154 (insn & 0xffff0000) != 0xc0e50000 &&
3155 (insn & 0xff000000) != 0x0d000000)
3704e358
AK		 3156 {
3157 invalid_tls_insn (input_bfd, input_section, rel);
3158 return FALSE;
3159 }
d0ddfe27
AK		 3160
3161 if ((insn & 0xff000000) == 0x0d000000)
3162 {
3163 /* LD->LE transition.
3164 basr rx, ry -> nopr r7 */
3165 insn = 0x07070000 | (insn & 0xffff);
3166 }
3167 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 3168 {
3169 /* LD->LE transition.
3170 bas %r14,0(%rx,%r13) -> bc 0,0 */
3171 insn = 0x47000000;
3172 }
3173 else
3174 {
3175 /* LD->LE transition.
d0ddfe27 3176 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 3177 insn = 0xc0040000;
3178 bfd_put_16 (output_bfd, 0x0000,
3179 contents + rel->r_offset + 4);
3180 }
69fc87f1
MS		 3181 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3182 }
3183 }
3184 continue;
3185
0451c93c
MS		 3186 default:
3187 break;
3188 }
ec338859 3189
239e1f3a
AM		 3190 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3191 because such sections are not SEC_ALLOC and thus ld.so will
3192 not process them. */
0451c93c 3193 if (unresolved_reloc
239e1f3a 3194 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3195 && h->def_dynamic)
3196 && _bfd_elf_section_offset (output_bfd, info, input_section,
3197 rel->r_offset) != (bfd_vma) -1)
4eca0228 3198 _bfd_error_handler
695344c0 3199 /* xgettext:c-format */
d42c267e 3200 (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3201 input_bfd,
3202 input_section,
d42c267e 3203 rel->r_offset,
843fe662 3204 howto->name,
0451c93c 3205 h->root.root.string);
ec338859 3206
470b557a
AK		 3207 do_relocation:
3208
fb798c50
AK		 3209 /* When applying a 24 bit reloc we need to start one byte
3210 earlier. Otherwise the 32 bit get/put bfd operations might
3211 access a byte after the actual section. */
3212 if (r_type == R_390_PC24DBL
3213 || r_type == R_390_PLT24DBL)
3214 rel->r_offset--;
3215
bd1ea41b
MS		 3216 if (r_type == R_390_20
3217 || r_type == R_390_GOT20
3218 || r_type == R_390_GOTPLT20
3219 || r_type == R_390_TLS_GOTIE20)
3220 {
3221 relocation += rel->r_addend;
3222 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3223 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3224 contents, rel->r_offset,
3225 relocation, 0);
3226 }
3227 else
3228 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3229 contents, rel->r_offset,
3230 relocation, rel->r_addend);
ec338859 3231
a85d7ed0
NC		 3232 if (r != bfd_reloc_ok)
3233 {
0451c93c 3234 const char *name;
ec338859 3235
0451c93c
MS		 3236 if (h != NULL)
3237 name = h->root.root.string;
3238 else
a85d7ed0 3239 {
0451c93c
MS		 3240 name = bfd_elf_string_from_elf_section (input_bfd,
3241 symtab_hdr->sh_link,
3242 sym->st_name);
3243 if (name == NULL)
b34976b6 3244 return FALSE;
0451c93c
MS		 3245 if (*name == '\0')
3246 name = bfd_section_name (input_bfd, sec);
3247 }
ec338859 3248
0451c93c 3249 if (r == bfd_reloc_overflow)
1a72702b
AM		 3250 (*info->callbacks->reloc_overflow)
3251 (info, (h ? &h->root : NULL), name, howto->name,
3252 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
0451c93c
MS		 3253 else
3254 {
4eca0228 3255 _bfd_error_handler
695344c0 3256 /* xgettext:c-format */
d42c267e 3257 (_("%B(%A+%#Lx): reloc against `%s': error %d"),
d003868e 3258 input_bfd, input_section,
d42c267e 3259 rel->r_offset, name, (int) r);
b34976b6 3260 return FALSE;
a85d7ed0
NC		 3261 }
3262 }
3263 }
ec338859 3264
b34976b6 3265 return TRUE;
a85d7ed0
NC		 3266}
3267
470b557a
AK		 3268/* Generate the PLT slots together with the dynamic relocations needed
3269 for IFUNC symbols. */
3270
3271static void
3272elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3273 struct bfd_link_info *info,
3274 struct elf_link_hash_entry *h,
3275 struct elf_s390_link_hash_table *htab,
3276 bfd_vma iplt_offset,
3277 bfd_vma resolver_address)
3278{
3279 bfd_vma iplt_index;
3280 bfd_vma got_offset;
3281 bfd_vma igotiplt_offset;
3282 Elf_Internal_Rela rela;
3283 bfd_byte *loc;
3284 asection *plt, *gotplt, *relplt;
3285 bfd_vma relative_offset;
3286
3287 if (htab->elf.iplt == NULL
3288 || htab->elf.igotplt == NULL
3289 || htab->elf.irelplt == NULL)
3290 abort ();
3291
3292 gotplt = htab->elf.igotplt;
3293 relplt = htab->elf.irelplt;
3294
3295 /* Index of the PLT slot within iplt section. */
3296 iplt_index = iplt_offset / PLT_ENTRY_SIZE;
3297 plt = htab->elf.iplt;
3298 /* Offset into the igot.plt section. */
3299 igotiplt_offset = iplt_index * GOT_ENTRY_SIZE;
3300 /* Offset into the got section. */
3301 got_offset = igotiplt_offset + gotplt->output_offset;
3302
3303 /* S390 uses halfwords for relative branch calc! */
3304 relative_offset = - (plt->output_offset +
3305 (PLT_ENTRY_SIZE * iplt_index) + 18) / 2;
ceada896
AA		 3306 /* If offset is > 32768, branch to a previous branch
3307 390 can only handle +-64 K jumps. */
470b557a
AK		 3308 if ( -32768 > (int) relative_offset )
3309 relative_offset
3310 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3311
3312 /* Fill in the entry in the procedure linkage table. */
0e1862bb 3313 if (!bfd_link_pic (info))
470b557a
AK		 3314 {
3315 memcpy (plt->contents + iplt_offset, elf_s390_plt_entry,
3316 PLT_ENTRY_SIZE);
3317
3318 /* Adjust jump to the first plt entry. */
3319 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3320 plt->contents + iplt_offset + 20);
3321
3322 /* Push the GOT offset field. */
3323 bfd_put_32 (output_bfd,
3324 (gotplt->output_section->vma
3325 + got_offset),
3326 plt->contents + iplt_offset + 24);
3327 }
3328 else if (got_offset < 4096)
3329 {
3330 /* The GOT offset is small enough to be used directly as
3331 displacement. */
3332 memcpy (plt->contents + iplt_offset,
3333 elf_s390_plt_pic12_entry,
3334 PLT_ENTRY_SIZE);
3335
3336 /* Put in the GOT offset as displacement value. The 0xc000
3337 value comes from the first word of the plt entry. Look
3338 at the elf_s390_plt_pic16_entry content. */
3339 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3340 plt->contents + iplt_offset + 2);
3341
3342 /* Adjust the jump to the first plt entry. */
3343 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3344 plt->contents + iplt_offset + 20);
3345 }
3346 else if (got_offset < 32768)
3347 {
3348 /* The GOT offset is too big for a displacement but small
3349 enough to be a signed 16 bit immediate value as it can be
3350 used in an lhi instruction. */
3351 memcpy (plt->contents + iplt_offset,
3352 elf_s390_plt_pic16_entry,
3353 PLT_ENTRY_SIZE);
3354
3355 /* Put in the GOT offset for the lhi instruction. */
3356 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3357 plt->contents + iplt_offset + 2);
3358
3359 /* Adjust the jump to the first plt entry. */
3360 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3361 plt->contents + iplt_offset + 20);
3362 }
3363 else
3364 {
3365 memcpy (plt->contents + iplt_offset,
3366 elf_s390_plt_pic_entry,
3367 PLT_ENTRY_SIZE);
3368
3369 /* Adjust the jump to the first plt entry. */
3370 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3371 plt->contents + iplt_offset + 20);
3372
3373 /* Push the GOT offset field. */
3374 bfd_put_32 (output_bfd, got_offset,
3375 plt->contents + iplt_offset + 24);
3376 }
3377 /* Insert offset into reloc. table here. */
3378 bfd_put_32 (output_bfd, relplt->output_offset +
3379 iplt_index * RELA_ENTRY_SIZE,
3380 plt->contents + iplt_offset + 28);
3381
3382 /* Fill in the entry in the global offset table.
3383 Points to instruction after GOT offset. */
3384 bfd_put_32 (output_bfd,
3385 (plt->output_section->vma
3386 + plt->output_offset
3387 + iplt_offset
3388 + 12),
3389 gotplt->contents + igotiplt_offset);
3390
3391 /* Fill in the entry in the .rela.plt section. */
3392 rela.r_offset = gotplt->output_section->vma + got_offset;
3393
3394 if (!h
3395 || h->dynindx == -1
0e1862bb 3396 || ((bfd_link_executable (info)
470b557a
AK		 3397 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3398 && h->def_regular))
3399 {
3400 /* The symbol can be locally resolved. */
3401 rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
3402 rela.r_addend = resolver_address;
3403 }
3404 else
3405 {
3406 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3407 rela.r_addend = 0;
3408 }
3409
3410 loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE;
3411 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3412}
3413
a85d7ed0
NC		 3414/* Finish up dynamic symbol handling. We set the contents of various
3415 dynamic sections here. */
3416
b34976b6 3417static bfd_boolean
2c3fc389
NC		 3418elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3419 struct bfd_link_info *info,
3420 struct elf_link_hash_entry *h,
3421 Elf_Internal_Sym *sym)
a85d7ed0 3422{
0451c93c 3423 struct elf_s390_link_hash_table *htab;
470b557a 3424 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
ec338859 3425
0451c93c 3426 htab = elf_s390_hash_table (info);
ec338859 3427
a85d7ed0
NC		 3428 if (h->plt.offset != (bfd_vma) -1)
3429 {
0451c93c
MS		 3430 bfd_vma plt_index;
3431 bfd_vma got_offset;
a85d7ed0 3432 Elf_Internal_Rela rela;
947216bf 3433 bfd_byte *loc;
a85d7ed0 3434 bfd_vma relative_offset;
ec338859 3435
a85d7ed0 3436 /* This symbol has an entry in the procedure linkage table. Set
26e41594 3437 it up. */
0a511368 3438 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
0451c93c 3439 {
0a511368
AK		 3440 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3441 htab, h->plt.offset,
3442 eh->ifunc_resolver_address +
3443 eh->ifunc_resolver_section->output_offset +
3444 eh->ifunc_resolver_section->output_section->vma);
3445 /* Do not return yet. Handling of explicit GOT slots of
3446 IFUNC symbols is below. */
0451c93c 3447 }
a85d7ed0 3448 else
0451c93c 3449 {
470b557a
AK		 3450 if (h->dynindx == -1
3451 || htab->elf.splt == NULL
3452 || htab->elf.sgotplt == NULL
3453 || htab->elf.srelplt == NULL)
3454 abort ();
9aa17453 3455
470b557a
AK		 3456 /* Calc. index no.
3457 Current offset - size first entry / entry size. */
3458 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9aa17453 3459
470b557a
AK		 3460 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3461 addr & GOT addr. */
3462 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3463
470b557a
AK		 3464 /* S390 uses halfwords for relative branch calc! */
3465 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3466 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3467 /* If offset is > 32768, branch to a previous branch
3468 390 can only handle +-64 K jumps. */
3469 if ( -32768 > (int) relative_offset )
3470 relative_offset
3471 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
ec338859 3472
470b557a 3473 /* Fill in the entry in the procedure linkage table. */
0e1862bb 3474 if (!bfd_link_pic (info))
470b557a
AK		 3475 {
3476 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry,
3477 PLT_ENTRY_SIZE);
3478
3479 /* Adjust jump to the first plt entry. */
3480 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3481 htab->elf.splt->contents + h->plt.offset + 20);
3482
3483 /* Push the GOT offset field. */
3484 bfd_put_32 (output_bfd,
3485 (htab->elf.sgotplt->output_section->vma
3486 + htab->elf.sgotplt->output_offset
3487 + got_offset),
3488 htab->elf.splt->contents + h->plt.offset + 24);
3489 }
3490 else if (got_offset < 4096)
3491 {
3492 /* The GOT offset is small enough to be used directly as
3493 displacement. */
3494 memcpy (htab->elf.splt->contents + h->plt.offset,
3495 elf_s390_plt_pic12_entry,
3496 PLT_ENTRY_SIZE);
3497
3498 /* Put in the GOT offset as displacement value. The 0xc000
3499 value comes from the first word of the plt entry. Look
3b67f094 3500 at the elf_s390_plt_pic12_entry content. */
470b557a
AK		 3501 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3502 htab->elf.splt->contents + h->plt.offset + 2);
3503
3504 /* Adjust the jump to the first plt entry. */
3505 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3506 htab->elf.splt->contents + h->plt.offset + 20);
3507 }
3508 else if (got_offset < 32768)
3509 {
3510 /* The GOT offset is too big for a displacement but small
3511 enough to be a signed 16 bit immediate value as it can be
3512 used in an lhi instruction. */
3513 memcpy (htab->elf.splt->contents + h->plt.offset,
3514 elf_s390_plt_pic16_entry,
3515 PLT_ENTRY_SIZE);
3516
3517 /* Put in the GOT offset for the lhi instruction. */
3518 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3519 htab->elf.splt->contents + h->plt.offset + 2);
3520
3521 /* Adjust the jump to the first plt entry. */
3522 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3523 htab->elf.splt->contents + h->plt.offset + 20);
3524 }
3525 else
3526 {
3527 memcpy (htab->elf.splt->contents + h->plt.offset,
3528 elf_s390_plt_pic_entry,
3529 PLT_ENTRY_SIZE);
3530
3531 /* Adjust the jump to the first plt entry. */
3532 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3533 htab->elf.splt->contents + h->plt.offset + 20);
3534
3535 /* Push the GOT offset field. */
3536 bfd_put_32 (output_bfd, got_offset,
3537 htab->elf.splt->contents + h->plt.offset + 24);
3538 }
3539 /* Insert offset into reloc. table here. */
3540 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3541 htab->elf.splt->contents + h->plt.offset + 28);
3542
3543 /* Fill in the entry in the global offset table.
3544 Points to instruction after GOT offset. */
3545 bfd_put_32 (output_bfd,
3546 (htab->elf.splt->output_section->vma
3547 + htab->elf.splt->output_offset
3548 + h->plt.offset
3549 + 12),
3550 htab->elf.sgotplt->contents + got_offset);
3551
3552 /* Fill in the entry in the .rela.plt section. */
3553 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3554 + htab->elf.sgotplt->output_offset
3555 + got_offset);
3556 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3557 rela.r_addend = 0;
3558 loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3559 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3560
3561 if (!h->def_regular)
3562 {
3563 /* Mark the symbol as undefined, rather than as defined in
3564 the .plt section. Leave the value alone. This is a clue
3565 for the dynamic linker, to make function pointer
3566 comparisons work between an application and shared
3567 library. */
3568 sym->st_shndx = SHN_UNDEF;
3569 }
a85d7ed0
NC		 3570 }
3571 }
ec338859 3572
69fc87f1
MS		 3573 if (h->got.offset != (bfd_vma) -1
3574 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3575 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3576 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3577 {
a85d7ed0 3578 Elf_Internal_Rela rela;
947216bf 3579 bfd_byte *loc;
a85d7ed0
NC		 3580
3581 /* This symbol has an entry in the global offset table. Set it
26e41594 3582 up. */
a85d7ed0 3583
f41345a7 3584 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3585 abort ();
a85d7ed0 3586
f41345a7
AK		 3587 rela.r_offset = (htab->elf.sgot->output_section->vma
3588 + htab->elf.sgot->output_offset
dc810e39 3589 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0
NC		 3590
3591 /* If this is a static link, or it is a -Bsymbolic link and the
3592 symbol is defined locally or was forced to be local because
3593 of a version file, we just want to emit a RELATIVE reloc.
3594 The entry in the global offset table will already have been
3595 initialized in the relocate_section function. */
470b557a
AK		 3596 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3597 {
0e1862bb 3598 if (bfd_link_pic (info))
470b557a
AK		 3599 {
3600 /* An explicit GOT slot usage needs GLOB_DAT. If the
3601 symbol references local the implicit got.iplt slot
3602 will be used and the IRELATIVE reloc has been created
3603 above. */
3604 goto do_glob_dat;
3605 }
3606 else
3607 {
3608 /* For non-shared objects explicit GOT slots must be
3609 filled with the PLT slot address for pointer
3610 equality reasons. */
3611 bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma
3612 + htab->elf.iplt->output_offset
3613 + h->plt.offset),
3614 htab->elf.sgot->contents + h->got.offset);
3615 return TRUE;
3616 }
3617 }
0e1862bb 3618 else if (bfd_link_pic (info)
ceada896 3619 && SYMBOL_REFERENCES_LOCAL (info, h))
0451c93c 3620 {
470b557a
AK		 3621 /* If this is a static link, or it is a -Bsymbolic link and
3622 the symbol is defined locally or was forced to be local
3623 because of a version file, we just want to emit a
3624 RELATIVE reloc. The entry in the global offset table
3625 will already have been initialized in the
3626 relocate_section function. */
8170f769 3627 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
8c21ca21 3628 return FALSE;
0451c93c
MS		 3629 BFD_ASSERT((h->got.offset & 1) != 0);
3630 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3631 rela.r_addend = (h->root.u.def.value
26e41594
AM		 3632 + h->root.u.def.section->output_section->vma
3633 + h->root.u.def.section->output_offset);
3634 }
a85d7ed0
NC		 3635 else
3636 {
3637 BFD_ASSERT((h->got.offset & 1) == 0);
470b557a 3638 do_glob_dat:
f41345a7 3639 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3640 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
26e41594
AM		 3641 rela.r_addend = 0;
3642 }
a85d7ed0 3643
f41345a7
AK		 3644 loc = htab->elf.srelgot->contents;
3645 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3646 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3647 }
3648
f5385ebf 3649 if (h->needs_copy)
a85d7ed0 3650 {
a85d7ed0 3651 Elf_Internal_Rela rela;
5474d94f 3652 asection *s;
947216bf 3653 bfd_byte *loc;
a85d7ed0
NC		 3654
3655 /* This symbols needs a copy reloc. Set it up. */
3656
0451c93c
MS		 3657 if (h->dynindx == -1
3658 || (h->root.type != bfd_link_hash_defined
3659 && h->root.type != bfd_link_hash_defweak)
5474d94f
AM		 3660 || htab->elf.srelbss == NULL
3661 || htab->elf.sreldynrelro == NULL)
0451c93c 3662 abort ();
a85d7ed0
NC		 3663
3664 rela.r_offset = (h->root.u.def.value
3665 + h->root.u.def.section->output_section->vma
3666 + h->root.u.def.section->output_offset);
3667 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3668 rela.r_addend = 0;
afbf7e8e 3669 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 3670 s = htab->elf.sreldynrelro;
3671 else
3672 s = htab->elf.srelbss;
3673 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3674 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3675 }
3676
3677 /* Mark some specially defined symbols as absolute. */
9637f6ef 3678 if (h == htab->elf.hdynamic
22edb2f1
RS		 3679 || h == htab->elf.hgot
3680 || h == htab->elf.hplt)
a85d7ed0
NC		 3681 sym->st_shndx = SHN_ABS;
3682
b34976b6 3683 return TRUE;
a85d7ed0
NC		 3684}
3685
0451c93c
MS		 3686/* Used to decide how to sort relocs in an optimal manner for the
3687 dynamic linker, before writing them out. */
3688
3689static enum elf_reloc_type_class
7e612e98
AM		 3690elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3691 const asection *rel_sec ATTRIBUTE_UNUSED,
3692 const Elf_Internal_Rela *rela)
0451c93c 3693{
0f042c67
AK		 3694 bfd *abfd = info->output_bfd;
3695 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3696 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3697 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
3698 Elf_Internal_Sym sym;
3699
3700 if (htab->elf.dynsym == NULL
3701 || !bed->s->swap_symbol_in (abfd,
3702 (htab->elf.dynsym->contents
3703 + r_symndx * bed->s->sizeof_sym),
3704 0, &sym))
3705 abort ();
3706
3707 /* Check relocation against STT_GNU_IFUNC symbol. */
3708 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3709 return reloc_class_ifunc;
3710
0451c93c
MS		 3711 switch ((int) ELF32_R_TYPE (rela->r_info))
3712 {
3713 case R_390_RELATIVE:
3714 return reloc_class_relative;
3715 case R_390_JMP_SLOT:
3716 return reloc_class_plt;
3717 case R_390_COPY:
3718 return reloc_class_copy;
3719 default:
3720 return reloc_class_normal;
3721 }
3722}
3723
a85d7ed0
NC		 3724/* Finish up the dynamic sections. */
3725
b34976b6 3726static bfd_boolean
2c3fc389
NC		 3727elf_s390_finish_dynamic_sections (bfd *output_bfd,
3728 struct bfd_link_info *info)
a85d7ed0 3729{
0451c93c 3730 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3731 bfd *dynobj;
3732 asection *sdyn;
470b557a
AK		 3733 bfd *ibfd;
3734 unsigned int i;
a85d7ed0 3735
0451c93c
MS		 3736 htab = elf_s390_hash_table (info);
3737 dynobj = htab->elf.dynobj;
3d4d4302 3738 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3739
0451c93c 3740 if (htab->elf.dynamic_sections_created)
a85d7ed0 3741 {
a85d7ed0
NC		 3742 Elf32_External_Dyn *dyncon, *dynconend;
3743
f41345a7 3744 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3745 abort ();
a85d7ed0
NC		 3746
3747 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 3748 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3749 for (; dyncon < dynconend; dyncon++)
3750 {
3751 Elf_Internal_Dyn dyn;
a85d7ed0 3752 asection *s;
ec338859 3753
a85d7ed0 3754 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3755
a85d7ed0
NC		 3756 switch (dyn.d_tag)
3757 {
3758 default:
0451c93c 3759 continue;
ec338859 3760
a85d7ed0 3761 case DT_PLTGOT:
4ade44b7
AM		 3762 s = htab->elf.sgotplt;
3763 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
0451c93c 3764 break;
ec338859 3765
a85d7ed0 3766 case DT_JMPREL:
4ade44b7
AM		 3767 s = htab->elf.srelplt;
3768 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a85d7ed0
NC		 3769 break;
3770
3771 case DT_PLTRELSZ:
79c12fae
AK		 3772 dyn.d_un.d_val = htab->elf.srelplt->size;
3773 if (htab->elf.irelplt)
3774 dyn.d_un.d_val += htab->elf.irelplt->size;
a85d7ed0
NC		 3775 break;
3776 }
0451c93c
MS		 3777
3778 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3779 }
3780
3781 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3782 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0 3783 {
f41345a7 3784 memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
0e1862bb 3785 if (bfd_link_pic (info))
0451c93c 3786 {
f41345a7 3787 memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry,
9aa17453
AK		 3788 PLT_FIRST_ENTRY_SIZE);
3789 }
26e41594 3790 else
9aa17453 3791 {
f41345a7 3792 memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry,
9aa17453 3793 PLT_FIRST_ENTRY_SIZE);
26e41594 3794 bfd_put_32 (output_bfd,
f41345a7
AK		 3795 htab->elf.sgotplt->output_section->vma
3796 + htab->elf.sgotplt->output_offset,
3797 htab->elf.splt->contents + 24);
ceada896 3798 }
f41345a7 3799 elf_section_data (htab->elf.splt->output_section)
0451c93c 3800 ->this_hdr.sh_entsize = 4;
a85d7ed0
NC		 3801 }
3802
3803 }
3804
f41345a7 3805 if (htab->elf.sgotplt)
a85d7ed0 3806 {
0451c93c 3807 /* Fill in the first three entries in the global offset table. */
f41345a7 3808 if (htab->elf.sgotplt->size > 0)
0451c93c
MS		 3809 {
3810 bfd_put_32 (output_bfd,
3811 (sdyn == NULL ? (bfd_vma) 0
3812 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3813 htab->elf.sgotplt->contents);
0451c93c 3814 /* One entry for shared object struct ptr. */
f41345a7 3815 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4);
0451c93c 3816 /* One entry for _dl_runtime_resolve. */
f41345a7 3817 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3818 }
a85d7ed0 3819
f41345a7 3820 elf_section_data (htab->elf.sgotplt->output_section)
0451c93c
MS		 3821 ->this_hdr.sh_entsize = 4;
3822 }
470b557a 3823 /* Finish dynamic symbol for local IFUNC symbols. */
c72f2fb2 3824 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
470b557a
AK		 3825 {
3826 struct plt_entry *local_plt;
3827 Elf_Internal_Sym *isym;
3828 Elf_Internal_Shdr *symtab_hdr;
3829
3830 symtab_hdr = &elf_symtab_hdr (ibfd);
3831
1ef692ea
AK		 3832 if (!is_s390_elf (ibfd))
3833 continue;
3834
470b557a
AK		 3835 local_plt = elf_s390_local_plt (ibfd);
3836 if (local_plt != NULL)
3837 for (i = 0; i < symtab_hdr->sh_info; i++)
3838 {
3839 if (local_plt[i].plt.offset != (bfd_vma) -1)
3840 {
3841 asection *sec = local_plt[i].sec;
3842 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3843 if (isym == NULL)
3844 return FALSE;
3845
3846 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3847 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3848 local_plt[i].plt.offset,
3849 isym->st_value
3850 + sec->output_section->vma
3851 + sec->output_offset);
3852
3853 }
3854 }
3855 }
b34976b6 3856 return TRUE;
a85d7ed0 3857}
e3e9290d
AA		 3858\f
3859/* Support for core dump NOTE sections. */
a85d7ed0 3860
b34976b6 3861static bfd_boolean
2c3fc389 3862elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note)
979f4a38
NC		 3863{
3864 int offset;
eea6121a 3865 unsigned int size;
979f4a38
NC		 3866
3867 switch (note->descsz)
3868 {
ceada896
AA		 3869 default:
3870 return FALSE;
979f4a38 3871
ceada896
AA		 3872 case 224: /* S/390 Linux. */
3873 /* pr_cursig */
3874 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
979f4a38 3875
ceada896
AA		 3876 /* pr_pid */
3877 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
979f4a38 3878
ceada896
AA		 3879 /* pr_reg */
3880 offset = 72;
3881 size = 144;
3882 break;
979f4a38
NC		 3883 }
3884
3885 /* Make a ".reg/999" section. */
3886 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 3887 size, note->descpos + offset);
979f4a38
NC		 3888}
3889
e3e9290d
AA		 3890static bfd_boolean
3891elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3892{
3893 switch (note->descsz)
3894 {
3895 default:
3896 return FALSE;
3897
3898 case 124: /* sizeof(struct elf_prpsinfo) on s390 */
3899 elf_tdata (abfd)->core->pid
3900 = bfd_get_32 (abfd, note->descdata + 12);
3901 elf_tdata (abfd)->core->program
3902 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
3903 elf_tdata (abfd)->core->command
3904 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
3905 break;
3906 }
3907
3908 /* Note that for some reason, a spurious space is tacked
3909 onto the end of the args in some (at least one anyway)
3910 implementations, so strip it off if it exists. */
3911
3912 {
3913 char *command = elf_tdata (abfd)->core->command;
3914 int n = strlen (command);
3915
3916 if (0 < n && command[n - 1] == ' ')
3917 command[n - 1] = '\0';
3918 }
3919
3920 return TRUE;
3921}
3922
3923static char *
3924elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
3925 int note_type, ...)
3926{
3927 va_list ap;
3928
3929 switch (note_type)
3930 {
3931 default:
3932 return NULL;
3933
3934 case NT_PRPSINFO:
3935 {
3936 char data[124] = { 0 };
3937 const char *fname, *psargs;
3938
3939 va_start (ap, note_type);
3940 fname = va_arg (ap, const char *);
3941 psargs = va_arg (ap, const char *);
3942 va_end (ap);
3943
3944 strncpy (data + 28, fname, 16);
3945 strncpy (data + 44, psargs, 80);
3946 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3947 &data, sizeof (data));
3948 }
3949
3950 case NT_PRSTATUS:
3951 {
3952 char data[224] = { 0 };
3953 long pid;
3954 int cursig;
3955 const void *gregs;
3956
3957 va_start (ap, note_type);
3958 pid = va_arg (ap, long);
3959 cursig = va_arg (ap, int);
3960 gregs = va_arg (ap, const void *);
3961 va_end (ap);
3962
3963 bfd_put_16 (abfd, cursig, data + 12);
3964 bfd_put_32 (abfd, pid, data + 24);
3965 memcpy (data + 72, gregs, 144);
3966 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3967 &data, sizeof (data));
3968 }
3969 }
3970 /* NOTREACHED */
3971}
3972\f
4c45e5c9
JJ		 3973/* Return address for Ith PLT stub in section PLT, for relocation REL
3974 or (bfd_vma) -1 if it should not be included. */
3975
3976static bfd_vma
3977elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3978 const arelent *rel ATTRIBUTE_UNUSED)
3979{
3980 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3981}
3982
643f7afb
AK		 3983/* Merge backend specific data from an object file to the output
3984 object file when linking. */
3985
55786da2 3986static bfd_boolean
50e03d47 3987elf32_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
55786da2 3988{
50e03d47
AM		 3989 bfd *obfd = info->output_bfd;
3990
643f7afb
AK		 3991 if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
3992 return TRUE;
3993
50e03d47 3994 if (!elf_s390_merge_obj_attributes (ibfd, info))
643f7afb
AK		 3995 return FALSE;
3996
55786da2
AK		 3997 elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
3998 return TRUE;
3999}
4000
4c45e5c9 4001
6d00b590 4002#define TARGET_BIG_SYM s390_elf32_vec
a85d7ed0
NC		 4003#define TARGET_BIG_NAME "elf32-s390"
4004#define ELF_ARCH bfd_arch_s390
ae95ffa6 4005#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 4006#define ELF_MACHINE_CODE EM_S390
4007#define ELF_MACHINE_ALT1 EM_S390_OLD
4008#define ELF_MAXPAGESIZE 0x1000
4009
4010#define elf_backend_can_gc_sections 1
51b64d56 4011#define elf_backend_can_refcount 1
a85d7ed0
NC		 4012#define elf_backend_want_got_plt 1
4013#define elf_backend_plt_readonly 1
4014#define elf_backend_want_plt_sym 0
4015#define elf_backend_got_header_size 12
5474d94f 4016#define elf_backend_want_dynrelro 1
b491616a 4017#define elf_backend_rela_normal 1
a85d7ed0 4018
26e41594 4019#define elf_info_to_howto elf_s390_info_to_howto
a85d7ed0 4020
a85d7ed0
NC		 4021#define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
4022#define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
4023#define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
157090f7 4024#define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
a85d7ed0 4025
55786da2
AK		 4026#define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
4027
a85d7ed0 4028#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
26e41594 4029#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c 4030#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
9d19e4fd 4031#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
a85d7ed0
NC		 4032#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4033#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
26e41594 4034#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
0451c93c 4035#define elf_backend_reloc_type_class elf_s390_reloc_type_class
26e41594 4036#define elf_backend_relocate_section elf_s390_relocate_section
a85d7ed0 4037#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 4038#define elf_backend_init_index_section _bfd_elf_init_1_index_section
979f4a38 4039#define elf_backend_grok_prstatus elf_s390_grok_prstatus
e3e9290d
AA		 4040#define elf_backend_grok_psinfo elf_s390_grok_psinfo
4041#define elf_backend_write_core_note elf_s390_write_core_note
4c45e5c9 4042#define elf_backend_plt_sym_val elf_s390_plt_sym_val
470b557a 4043#define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
b9005ba7 4044#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
a85d7ed0 4045
69fc87f1 4046#define bfd_elf32_mkobject elf_s390_mkobject
26e41594 4047#define elf_backend_object_p elf_s390_object_p
a85d7ed0 4048
a2f63b2e
MR		 4049#define elf_backend_linux_prpsinfo32_ugid16 TRUE
4050
a85d7ed0 4051#include "elf32-target.h"
GDB Binutils - Deliverables
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