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S/390: ifunc: Handle GOTOFF relocs on ifunc symbols.
[thirdparty/binutils-gdb.git] / bfd / elf32-s390.c
CommitLineData
a85d7ed0 1/* IBM S/390-specific support for 32-bit ELF
b90efa5b 2 Copyright (C) 2000-2015 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
NC		 27#include "elf/s390.h"
28
2c3fc389
NC		 29static bfd_reloc_status_type
30s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
31 asection *, bfd *, char **);
32static bfd_reloc_status_type
33s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
34 asection *, bfd *, char **);
35
a85d7ed0
NC		 36/* The relocation "howto" table. */
37
38static reloc_howto_type elf_howto_table[] =
39{
40 HOWTO (R_390_NONE, /* type */
41 0, /* rightshift */
6346d5ca 42 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
a85d7ed0 43 0, /* bitsize */
b34976b6 44 FALSE, /* pc_relative */
a85d7ed0
NC		 45 0, /* bitpos */
46 complain_overflow_dont, /* complain_on_overflow */
47 bfd_elf_generic_reloc, /* special_function */
48 "R_390_NONE", /* name */
b34976b6 49 FALSE, /* partial_inplace */
a85d7ed0
NC		 50 0, /* src_mask */
51 0, /* dst_mask */
b34976b6
AM		 52 FALSE), /* pcrel_offset */
53
5236c819
MS		 54 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
55 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
56 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
57 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
58 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
59 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
60 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
61 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
62 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
63 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
15f8604d 64 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 65 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
66 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
67 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
68 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
69 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
70 HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
71 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
72 HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
73 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
74 HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
75 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
76 HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
77 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
78 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
79 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
80 HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
81 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
82 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
83 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
84 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
85 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
86 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
87 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
88 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
89 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
90 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
91 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
92 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
93 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
94 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
95 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
96 EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
97 EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
98 EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
99 EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
100 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
101 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
102 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
103 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
104 EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
105 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
106 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
107 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
108 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
109 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
110 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
111 EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
112 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
113 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE),
114 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
115 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
116 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
117 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
118 EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
69fc87f1
MS		 119 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
120 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
121 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
122 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
123 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
124 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
125 HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
126 bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE),
127 EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */
128 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
129 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
130 HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
131 bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE),
132 EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */
133 HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
134 bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE),
135 EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */
136 HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
137 bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE),
138 EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */
139 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
140 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE),
141 HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
142 bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE),
143 EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */
144 HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
145 bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE),
146 EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */
147 HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
148 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE),
149 HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
150 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE),
151 HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
152 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE),
bd1ea41b
MS		 153 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
154 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
155 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
156 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
157 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
158 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
159 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
160 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
470b557a
AK		 161 HOWTO(R_390_IRELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
162 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, 0xffffffff, FALSE),
fb798c50
AK		 163 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
164 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
165 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
166 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
167 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
168 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
169 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
170 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
a85d7ed0
NC		 171};
172
173/* GNU extension to record C++ vtable hierarchy. */
174static reloc_howto_type elf32_s390_vtinherit_howto =
b34976b6 175 HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
a85d7ed0 176static reloc_howto_type elf32_s390_vtentry_howto =
b34976b6 177 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		 178
179static reloc_howto_type *
2c3fc389
NC		 180elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
181 bfd_reloc_code_real_type code)
a85d7ed0 182{
ec338859 183 switch (code)
0451c93c
MS		 184 {
185 case BFD_RELOC_NONE:
186 return &elf_howto_table[(int) R_390_NONE];
187 case BFD_RELOC_8:
188 return &elf_howto_table[(int) R_390_8];
189 case BFD_RELOC_390_12:
190 return &elf_howto_table[(int) R_390_12];
191 case BFD_RELOC_16:
192 return &elf_howto_table[(int) R_390_16];
193 case BFD_RELOC_32:
194 return &elf_howto_table[(int) R_390_32];
195 case BFD_RELOC_CTOR:
196 return &elf_howto_table[(int) R_390_32];
197 case BFD_RELOC_32_PCREL:
198 return &elf_howto_table[(int) R_390_PC32];
199 case BFD_RELOC_390_GOT12:
200 return &elf_howto_table[(int) R_390_GOT12];
201 case BFD_RELOC_32_GOT_PCREL:
202 return &elf_howto_table[(int) R_390_GOT32];
203 case BFD_RELOC_390_PLT32:
204 return &elf_howto_table[(int) R_390_PLT32];
205 case BFD_RELOC_390_COPY:
206 return &elf_howto_table[(int) R_390_COPY];
207 case BFD_RELOC_390_GLOB_DAT:
208 return &elf_howto_table[(int) R_390_GLOB_DAT];
209 case BFD_RELOC_390_JMP_SLOT:
210 return &elf_howto_table[(int) R_390_JMP_SLOT];
211 case BFD_RELOC_390_RELATIVE:
212 return &elf_howto_table[(int) R_390_RELATIVE];
213 case BFD_RELOC_32_GOTOFF:
5236c819 214 return &elf_howto_table[(int) R_390_GOTOFF32];
0451c93c
MS		 215 case BFD_RELOC_390_GOTPC:
216 return &elf_howto_table[(int) R_390_GOTPC];
217 case BFD_RELOC_390_GOT16:
218 return &elf_howto_table[(int) R_390_GOT16];
219 case BFD_RELOC_16_PCREL:
220 return &elf_howto_table[(int) R_390_PC16];
fb798c50
AK		 221 case BFD_RELOC_390_PC12DBL:
222 return &elf_howto_table[(int) R_390_PC12DBL];
223 case BFD_RELOC_390_PLT12DBL:
224 return &elf_howto_table[(int) R_390_PLT12DBL];
0451c93c
MS		 225 case BFD_RELOC_390_PC16DBL:
226 return &elf_howto_table[(int) R_390_PC16DBL];
227 case BFD_RELOC_390_PLT16DBL:
228 return &elf_howto_table[(int) R_390_PLT16DBL];
fb798c50
AK		 229 case BFD_RELOC_390_PC24DBL:
230 return &elf_howto_table[(int) R_390_PC24DBL];
231 case BFD_RELOC_390_PLT24DBL:
232 return &elf_howto_table[(int) R_390_PLT24DBL];
befc3abb
MS		 233 case BFD_RELOC_390_PC32DBL:
234 return &elf_howto_table[(int) R_390_PC32DBL];
235 case BFD_RELOC_390_PLT32DBL:
236 return &elf_howto_table[(int) R_390_PLT32DBL];
237 case BFD_RELOC_390_GOTPCDBL:
238 return &elf_howto_table[(int) R_390_GOTPCDBL];
239 case BFD_RELOC_390_GOTENT:
240 return &elf_howto_table[(int) R_390_GOTENT];
5236c819
MS		 241 case BFD_RELOC_16_GOTOFF:
242 return &elf_howto_table[(int) R_390_GOTOFF16];
243 case BFD_RELOC_390_GOTPLT12:
244 return &elf_howto_table[(int) R_390_GOTPLT12];
245 case BFD_RELOC_390_GOTPLT16:
246 return &elf_howto_table[(int) R_390_GOTPLT16];
247 case BFD_RELOC_390_GOTPLT32:
248 return &elf_howto_table[(int) R_390_GOTPLT32];
249 case BFD_RELOC_390_GOTPLTENT:
250 return &elf_howto_table[(int) R_390_GOTPLTENT];
251 case BFD_RELOC_390_PLTOFF16:
252 return &elf_howto_table[(int) R_390_PLTOFF16];
253 case BFD_RELOC_390_PLTOFF32:
254 return &elf_howto_table[(int) R_390_PLTOFF32];
69fc87f1
MS		 255 case BFD_RELOC_390_TLS_LOAD:
256 return &elf_howto_table[(int) R_390_TLS_LOAD];
257 case BFD_RELOC_390_TLS_GDCALL:
258 return &elf_howto_table[(int) R_390_TLS_GDCALL];
259 case BFD_RELOC_390_TLS_LDCALL:
260 return &elf_howto_table[(int) R_390_TLS_LDCALL];
261 case BFD_RELOC_390_TLS_GD32:
262 return &elf_howto_table[(int) R_390_TLS_GD32];
263 case BFD_RELOC_390_TLS_GOTIE12:
264 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
265 case BFD_RELOC_390_TLS_GOTIE32:
266 return &elf_howto_table[(int) R_390_TLS_GOTIE32];
267 case BFD_RELOC_390_TLS_LDM32:
268 return &elf_howto_table[(int) R_390_TLS_LDM32];
269 case BFD_RELOC_390_TLS_IE32:
270 return &elf_howto_table[(int) R_390_TLS_IE32];
271 case BFD_RELOC_390_TLS_IEENT:
272 return &elf_howto_table[(int) R_390_TLS_IEENT];
273 case BFD_RELOC_390_TLS_LE32:
274 return &elf_howto_table[(int) R_390_TLS_LE32];
275 case BFD_RELOC_390_TLS_LDO32:
276 return &elf_howto_table[(int) R_390_TLS_LDO32];
277 case BFD_RELOC_390_TLS_DTPMOD:
278 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
279 case BFD_RELOC_390_TLS_DTPOFF:
280 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
281 case BFD_RELOC_390_TLS_TPOFF:
282 return &elf_howto_table[(int) R_390_TLS_TPOFF];
bd1ea41b
MS		 283 case BFD_RELOC_390_20:
284 return &elf_howto_table[(int) R_390_20];
285 case BFD_RELOC_390_GOT20:
286 return &elf_howto_table[(int) R_390_GOT20];
287 case BFD_RELOC_390_GOTPLT20:
288 return &elf_howto_table[(int) R_390_GOTPLT20];
289 case BFD_RELOC_390_TLS_GOTIE20:
290 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
470b557a
AK		 291 case BFD_RELOC_390_IRELATIVE:
292 return &elf_howto_table[(int) R_390_IRELATIVE];
0451c93c
MS		 293 case BFD_RELOC_VTABLE_INHERIT:
294 return &elf32_s390_vtinherit_howto;
295 case BFD_RELOC_VTABLE_ENTRY:
296 return &elf32_s390_vtentry_howto;
297 default:
298 break;
299 }
a85d7ed0
NC		 300 return 0;
301}
302
157090f7
AM		 303static reloc_howto_type *
304elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
305 const char *r_name)
306{
307 unsigned int i;
308
309 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
310 if (elf_howto_table[i].name != NULL
311 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
312 return &elf_howto_table[i];
313
314 if (strcasecmp (elf32_s390_vtinherit_howto.name, r_name) == 0)
315 return &elf32_s390_vtinherit_howto;
316 if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0)
317 return &elf32_s390_vtentry_howto;
318
319 return NULL;
320}
321
a85d7ed0
NC		 322/* We need to use ELF32_R_TYPE so we have our own copy of this function,
323 and elf32-s390.c has its own copy. */
324
325static void
2c3fc389
NC		 326elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
327 arelent *cache_ptr,
328 Elf_Internal_Rela *dst)
a85d7ed0 329{
d0fb9a8d
JJ		 330 unsigned int r_type = ELF32_R_TYPE(dst->r_info);
331 switch (r_type)
a85d7ed0
NC		 332 {
333 case R_390_GNU_VTINHERIT:
334 cache_ptr->howto = &elf32_s390_vtinherit_howto;
335 break;
336
337 case R_390_GNU_VTENTRY:
338 cache_ptr->howto = &elf32_s390_vtentry_howto;
339 break;
340
341 default:
d0fb9a8d
JJ		 342 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
343 {
344 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
345 abfd, (int) r_type);
346 r_type = R_390_NONE;
347 }
348 cache_ptr->howto = &elf_howto_table[r_type];
dc810e39 349 }
a85d7ed0
NC		 350}
351
69fc87f1
MS		 352/* A relocation function which doesn't do anything. */
353static bfd_reloc_status_type
2c3fc389
NC		 354s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
355 arelent *reloc_entry,
356 asymbol *symbol ATTRIBUTE_UNUSED,
357 void * data ATTRIBUTE_UNUSED,
358 asection *input_section,
359 bfd *output_bfd,
360 char **error_message ATTRIBUTE_UNUSED)
69fc87f1
MS		 361{
362 if (output_bfd)
363 reloc_entry->address += input_section->output_offset;
364 return bfd_reloc_ok;
365}
366
bd1ea41b
MS		 367/* Handle the large displacement relocs. */
368static bfd_reloc_status_type
2c3fc389
NC		 369s390_elf_ldisp_reloc (bfd *abfd ATTRIBUTE_UNUSED,
370 arelent *reloc_entry,
371 asymbol *symbol,
372 void * data ATTRIBUTE_UNUSED,
373 asection *input_section,
374 bfd *output_bfd,
375 char **error_message ATTRIBUTE_UNUSED)
bd1ea41b
MS		 376{
377 reloc_howto_type *howto = reloc_entry->howto;
378 bfd_vma relocation;
379 bfd_vma insn;
68ffbac6 380
bd1ea41b
MS		 381 if (output_bfd != (bfd *) NULL
382 && (symbol->flags & BSF_SECTION_SYM) == 0
383 && (! howto->partial_inplace
384 || reloc_entry->addend == 0))
385 {
386 reloc_entry->address += input_section->output_offset;
387 return bfd_reloc_ok;
388 }
68ffbac6 389
bd1ea41b
MS		 390 if (output_bfd != NULL)
391 return bfd_reloc_continue;
68ffbac6 392
07515404 393 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b 394 return bfd_reloc_outofrange;
68ffbac6 395
bd1ea41b
MS		 396 relocation = (symbol->value
397 + symbol->section->output_section->vma
398 + symbol->section->output_offset);
399 relocation += reloc_entry->addend;
400 if (howto->pc_relative)
401 {
402 relocation -= (input_section->output_section->vma
403 + input_section->output_offset);
404 relocation -= reloc_entry->address;
405 }
68ffbac6 406
bd1ea41b
MS		 407 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
408 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
409 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
68ffbac6 410
bd1ea41b
MS		 411 if ((bfd_signed_vma) relocation < - 0x80000
412 || (bfd_signed_vma) relocation > 0x7ffff)
413 return bfd_reloc_overflow;
414 else
415 return bfd_reloc_ok;
416}
417
b34976b6 418static bfd_boolean
2c3fc389 419elf_s390_is_local_label_name (bfd *abfd, const char *name)
a85d7ed0
NC		 420{
421 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 422 return TRUE;
a85d7ed0
NC		 423
424 return _bfd_elf_is_local_label_name (abfd, name);
425}
426
427/* Functions for the 390 ELF linker. */
428
429/* The name of the dynamic interpreter. This is put in the .interp
430 section. */
431
87049b0d 432#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
a85d7ed0 433
64285810
MS		 434/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
435 copying dynamic variables from a shared lib into an app's dynbss
436 section, and instead use a dynamic relocation to point into the
437 shared lib. */
438#define ELIMINATE_COPY_RELOCS 1
439
a85d7ed0
NC		 440/* The size in bytes of the first entry in the procedure linkage table. */
441#define PLT_FIRST_ENTRY_SIZE 32
442/* The size in bytes of an entry in the procedure linkage table. */
dc810e39 443#define PLT_ENTRY_SIZE 32
a85d7ed0
NC		 444
445#define GOT_ENTRY_SIZE 4
446
470b557a
AK		 447#define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela)
448
a85d7ed0
NC		 449/* The first three entries in a procedure linkage table are reserved,
450 and the initial contents are unimportant (we zero them out).
451 Subsequent entries look like this. See the SVR4 ABI 386
452 supplement to see how this works. */
453
454/* For the s390, simple addr offset can only be 0 - 4096.
455 To use the full 2 GB address space, several instructions
456 are needed to load an address in a register and execute
457 a branch( or just saving the address)
458
dc810e39 459 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC		 460
461/* The first 3 words in the GOT are then reserved.
462 Word 0 is the address of the dynamic table.
463 Word 1 is a pointer to a structure describing the object
464 Word 2 is used to point to the loader entry address.
465
4cc11e76 466 The code for position independent PLT entries looks like this:
a85d7ed0
NC		 467
468 r12 holds addr of the current GOT at entry to the PLT
469
470 The GOT holds the address in the PLT to be executed.
471 The loader then gets:
472 24(15) = Pointer to the structure describing the object.
a7e28bbe 473 28(15) = Offset into rela.plt
a85d7ed0
NC		 474
475 The loader must then find the module where the function is
476 and insert the address in the GOT.
477
478 Note: 390 can only address +- 64 K relative.
479 We check if offset > 65536, then make a relative branch -64xxx
480 back to a previous defined branch
481
482PLT1: BASR 1,0 # 2 bytes
483 L 1,22(1) # 4 bytes Load offset in GOT in r 1
484 L 1,(1,12) # 4 bytes Load address from GOT in r1
485 BCR 15,1 # 2 bytes Jump to address
486RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
487 L 1,14(1) # 4 bytes Load offset in symol table in r1
488 BRC 15,-x # 4 bytes Jump to start of PLT
489 .word 0 # 2 bytes filler
490 .long ? # 4 bytes offset in GOT
a7e28bbe 491 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 492
493 This was the general case. There are two additional, optimizes PLT
494 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
495 First the one for GOT offsets < 4096:
496
497PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
498 BCR 15,1 # 2 bytes Jump to address
499 .word 0,0,0 # 6 bytes filler
500RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
a7e28bbe 501 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
a85d7ed0
NC		 502 BRC 15,-x # 4 bytes Jump to start of PLT
503 .word 0,0,0 # 6 bytes filler
a7e28bbe 504 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 505
506 Second the one for GOT offsets < 32768:
507
508PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
509 L 1,(1,12) # 4 bytes Load address from GOT to r1
510 BCR 15,1 # 2 bytes Jump to address
511 .word 0 # 2 bytes filler
512RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
a7e28bbe 513 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
a85d7ed0
NC		 514 BRC 15,-x # 4 bytes Jump to start of PLT
515 .word 0,0,0 # 6 bytes filler
a7e28bbe 516 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 517
518Total = 32 bytes per PLT entry
519
520 The code for static build PLT entries looks like this:
521
522PLT1: BASR 1,0 # 2 bytes
523 L 1,22(1) # 4 bytes Load address of GOT entry
524 L 1,0(0,1) # 4 bytes Load address from GOT in r1
525 BCR 15,1 # 2 bytes Jump to address
526RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
527 L 1,14(1) # 4 bytes Load offset in symbol table in r1
528 BRC 15,-x # 4 bytes Jump to start of PLT
529 .word 0 # 2 bytes filler
530 .long ? # 4 bytes address of GOT entry
a7e28bbe 531 .long ? # 4 bytes offset into rela.plt */
a85d7ed0 532
9aa17453
AK		 533static const bfd_byte elf_s390_plt_entry[PLT_ENTRY_SIZE] =
534 {
535 0x0d, 0x10, /* basr %r1,%r0 */
536 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
537 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */
538 0x07, 0xf1, /* br %r1 */
539 0x0d, 0x10, /* basr %r1,%r0 */
540 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
541 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
542 0x00, 0x00, /* padding */
543 0x00, 0x00, 0x00, 0x00, /* GOT offset */
544 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
545 };
546
547/* Generic PLT pic entry. */
548static const bfd_byte elf_s390_plt_pic_entry[PLT_ENTRY_SIZE] =
549 {
550 0x0d, 0x10, /* basr %r1,%r0 */
551 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
552 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
553 0x07, 0xf1, /* br %r1 */
554 0x0d, 0x10, /* basr %r1,%r0 */
555 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
556 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
557 0x00, 0x00, /* padding */
558 0x00, 0x00, 0x00, 0x00, /* GOT offset */
559 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
560 };
561
562/* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced
563 when generating the PLT slot with the GOT offset. */
564static const bfd_byte elf_s390_plt_pic12_entry[PLT_ENTRY_SIZE] =
565 {
566 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */
567 0x07, 0xf1, /* br %r1 */
568 0x00, 0x00, 0x00, 0x00, /* padding */
569 0x00, 0x00,
570 0x0d, 0x10, /* basr %r1,%r0 */
571 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
572 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
573 0x00, 0x00, 0x00, 0x00,
574 0x00, 0x00, 0x00, 0x00
575 };
576
577/* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced
578 when generating the PLT slot with the GOT offset. */
579static const bfd_byte elf_s390_plt_pic16_entry[PLT_ENTRY_SIZE] =
580 {
581 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */
582 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
583 0x07, 0xf1, /* br %r1 */
584 0x00, 0x00,
585 0x0d, 0x10, /* basr %r1,%r0 */
586 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
587 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
588 0x00, 0x00, 0x00, 0x00,
589 0x00, 0x00, 0x00, 0x00,
590 0x00, 0x00
591 };
a85d7ed0 592
a7e28bbe 593/* The first PLT entry pushes the offset into the rela.plt
a85d7ed0
NC		 594 from R1 onto the stack at 8(15) and the loader object info
595 at 12(15), loads the loader address in R1 and jumps to it. */
596
597/* The first entry in the PLT for PIC code:
598
599PLT0:
a7e28bbe 600 ST 1,28(15) # R1 has offset into rela.plt
a85d7ed0 601 L 1,4(12) # Get loader ino(object struct address)
dc810e39 602 ST 1,24(15) # Store address
a85d7ed0
NC		 603 L 1,8(12) # Entry address of loader in R1
604 BR 1 # Jump to loader
605
606 The first entry in the PLT for static code:
607
608PLT0:
a7e28bbe 609 ST 1,28(15) # R1 has offset into rela.plt
a85d7ed0
NC		 610 BASR 1,0
611 L 1,18(0,1) # Get address of GOT
612 MVC 24(4,15),4(1) # Move loader ino to stack
613 L 1,8(1) # Get address of loader
614 BR 1 # Jump to loader
615 .word 0 # filler
616 .long got # address of GOT */
617
9aa17453
AK		 618static const bfd_byte elf_s390_plt_first_entry[PLT_FIRST_ENTRY_SIZE] =
619 {
620 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
621 0x0d, 0x10, /* basr %r1,%r0 */
622 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */
623 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */
624 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */
625 0x07, 0xf1, /* br %r1 */
626 0x00, 0x00, 0x00, 0x00,
627 0x00, 0x00, 0x00, 0x00,
628 0x00, 0x00
629 };
630
631static const bfd_byte elf_s390_plt_pic_first_entry[PLT_FIRST_ENTRY_SIZE] =
632 {
633 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
634 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */
635 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */
636 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */
637 0x07, 0xf1, /* br %r1 */
638 0x00, 0x00, 0x00, 0x00,
639 0x00, 0x00, 0x00, 0x00,
640 0x00, 0x00, 0x00, 0x00,
641 0x00, 0x00
642 };
a85d7ed0 643
a85d7ed0
NC		 644
645/* s390 ELF linker hash entry. */
646
647struct elf_s390_link_hash_entry
648{
0451c93c 649 struct elf_link_hash_entry elf;
a85d7ed0 650
0451c93c 651 /* Track dynamic relocs copied for this symbol. */
00d8c7a9 652 struct elf_dyn_relocs *dyn_relocs;
5236c819
MS		 653
654 /* Number of GOTPLT references for a function. */
655 bfd_signed_vma gotplt_refcount;
69fc87f1
MS		 656
657#define GOT_UNKNOWN 0
658#define GOT_NORMAL 1
659#define GOT_TLS_GD 2
660#define GOT_TLS_IE 3
661#define GOT_TLS_IE_NLT 4
662 unsigned char tls_type;
470b557a
AK		 663
664 /* For pointer equality reasons we might need to change the symbol
665 type from STT_GNU_IFUNC to STT_FUNC together with its value and
666 section entry. So after alloc_dynrelocs only these values should
667 be used. In order to check whether a symbol is IFUNC use
668 s390_is_ifunc_symbol_p. */
669 bfd_vma ifunc_resolver_address;
670 asection *ifunc_resolver_section;
a85d7ed0
NC		 671};
672
69fc87f1
MS		 673#define elf_s390_hash_entry(ent) \
674 ((struct elf_s390_link_hash_entry *)(ent))
675
470b557a
AK		 676/* This structure represents an entry in the local PLT list needed for
677 local IFUNC symbols. */
678struct plt_entry
679{
680 /* The section of the local symbol.
681 Set in relocate_section and used in finish_dynamic_sections. */
682 asection *sec;
683
684 union
685 {
686 bfd_signed_vma refcount;
687 bfd_vma offset;
688 } plt;
689};
690
0ffa91dd
NC		 691/* NOTE: Keep this structure in sync with
692 the one declared in elf64-s390.c. */
69fc87f1
MS		 693struct elf_s390_obj_tdata
694{
695 struct elf_obj_tdata root;
696
470b557a
AK		 697 /* A local PLT is needed for ifunc symbols. */
698 struct plt_entry *local_plt;
699
0ffa91dd 700 /* TLS type for each local got entry. */
69fc87f1
MS		 701 char *local_got_tls_type;
702};
703
704#define elf_s390_tdata(abfd) \
705 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
706
470b557a
AK		 707#define elf_s390_local_plt(abfd) \
708 (elf_s390_tdata (abfd)->local_plt)
709
69fc87f1
MS		 710#define elf_s390_local_got_tls_type(abfd) \
711 (elf_s390_tdata (abfd)->local_got_tls_type)
712
0ffa91dd
NC		 713#define is_s390_elf(bfd) \
714 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
715 && elf_tdata (bfd) != NULL \
4dfe6ac6 716 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 717
69fc87f1 718static bfd_boolean
62d7a5f6 719elf_s390_mkobject (bfd *abfd)
69fc87f1 720{
0ffa91dd 721 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 722 S390_ELF_DATA);
69fc87f1
MS		 723}
724
725static bfd_boolean
2c3fc389 726elf_s390_object_p (bfd *abfd)
69fc87f1 727{
69fc87f1
MS		 728 /* Set the right machine number for an s390 elf32 file. */
729 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
730}
731
a85d7ed0
NC		 732/* s390 ELF linker hash table. */
733
734struct elf_s390_link_hash_table
735{
0451c93c 736 struct elf_link_hash_table elf;
a85d7ed0 737
0451c93c 738 /* Short-cuts to get to dynamic linker sections. */
0451c93c
MS		 739 asection *sdynbss;
740 asection *srelbss;
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
819/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
820 shortcuts to them in our hash table. */
821
b34976b6 822static bfd_boolean
2c3fc389 823create_got_section (bfd *dynobj, struct bfd_link_info *info)
0451c93c
MS		 824{
825 struct elf_s390_link_hash_table *htab;
826
827 if (! _bfd_elf_create_got_section (dynobj, info))
b34976b6 828 return FALSE;
0451c93c
MS		 829
830 htab = elf_s390_hash_table (info);
3d4d4302
AM		 831 htab->elf.sgot = bfd_get_linker_section (dynobj, ".got");
832 htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
833 htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got");
f41345a7 834 if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot)
0451c93c
MS		 835 abort ();
836
b34976b6 837 return TRUE;
0451c93c
MS		 838}
839
840/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
841 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
842 hash table. */
843
b34976b6 844static bfd_boolean
2c3fc389 845elf_s390_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
0451c93c
MS		 846{
847 struct elf_s390_link_hash_table *htab;
848
849 htab = elf_s390_hash_table (info);
f41345a7 850 if (!htab->elf.sgot && !create_got_section (dynobj, info))
b34976b6 851 return FALSE;
0451c93c
MS		 852
853 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 854 return FALSE;
0451c93c 855
3d4d4302
AM		 856 htab->elf.splt = bfd_get_linker_section (dynobj, ".plt");
857 htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt");
858 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
0e1862bb 859 if (!bfd_link_pic (info))
3d4d4302 860 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
0451c93c 861
f41345a7 862 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
0e1862bb 863 || (!bfd_link_pic (info) && !htab->srelbss))
0451c93c
MS		 864 abort ();
865
b34976b6 866 return TRUE;
a85d7ed0
NC		 867}
868
0451c93c
MS		 869/* Copy the extra info we tack onto an elf_link_hash_entry. */
870
871static void
2c3fc389
NC		 872elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
873 struct elf_link_hash_entry *dir,
874 struct elf_link_hash_entry *ind)
0451c93c
MS		 875{
876 struct elf_s390_link_hash_entry *edir, *eind;
877
878 edir = (struct elf_s390_link_hash_entry *) dir;
879 eind = (struct elf_s390_link_hash_entry *) ind;
880
881 if (eind->dyn_relocs != NULL)
882 {
883 if (edir->dyn_relocs != NULL)
884 {
00d8c7a9
AK		 885 struct elf_dyn_relocs **pp;
886 struct elf_dyn_relocs *p;
0451c93c 887
fcfa13d2 888 /* Add reloc counts against the indirect sym to the direct sym
0451c93c
MS		 889 list. Merge any entries against the same section. */
890 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
891 {
00d8c7a9 892 struct elf_dyn_relocs *q;
0451c93c
MS		 893
894 for (q = edir->dyn_relocs; q != NULL; q = q->next)
895 if (q->sec == p->sec)
896 {
897 q->pc_count += p->pc_count;
898 q->count += p->count;
899 *pp = p->next;
900 break;
901 }
902 if (q == NULL)
903 pp = &p->next;
904 }
905 *pp = edir->dyn_relocs;
906 }
907
908 edir->dyn_relocs = eind->dyn_relocs;
909 eind->dyn_relocs = NULL;
910 }
911
69fc87f1
MS		 912 if (ind->root.type == bfd_link_hash_indirect
913 && dir->got.refcount <= 0)
914 {
915 edir->tls_type = eind->tls_type;
916 eind->tls_type = GOT_UNKNOWN;
917 }
918
64285810
MS		 919 if (ELIMINATE_COPY_RELOCS
920 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 921 && dir->dynamic_adjusted)
922 {
923 /* If called to transfer flags for a weakdef during processing
924 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
925 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
926 dir->ref_dynamic |= ind->ref_dynamic;
927 dir->ref_regular |= ind->ref_regular;
928 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
929 dir->needs_plt |= ind->needs_plt;
930 }
64285810 931 else
fcfa13d2 932 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 933}
a85d7ed0 934
69fc87f1 935static int
2c3fc389
NC		 936elf_s390_tls_transition (struct bfd_link_info *info,
937 int r_type,
938 int is_local)
69fc87f1 939{
0e1862bb 940 if (bfd_link_pic (info))
69fc87f1
MS		 941 return r_type;
942
943 switch (r_type)
944 {
945 case R_390_TLS_GD32:
946 case R_390_TLS_IE32:
947 if (is_local)
948 return R_390_TLS_LE32;
949 return R_390_TLS_IE32;
950 case R_390_TLS_GOTIE32:
951 if (is_local)
952 return R_390_TLS_LE32;
953 return R_390_TLS_GOTIE32;
954 case R_390_TLS_LDM32:
955 return R_390_TLS_LE32;
956 }
957
958 return r_type;
959}
960
a85d7ed0
NC		 961/* Look through the relocs for a section during the first phase, and
962 allocate space in the global offset table or procedure linkage
963 table. */
964
b34976b6 965static bfd_boolean
2c3fc389
NC		 966elf_s390_check_relocs (bfd *abfd,
967 struct bfd_link_info *info,
968 asection *sec,
969 const Elf_Internal_Rela *relocs)
a85d7ed0 970{
0451c93c 971 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 972 Elf_Internal_Shdr *symtab_hdr;
973 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 974 const Elf_Internal_Rela *rel;
975 const Elf_Internal_Rela *rel_end;
a85d7ed0 976 asection *sreloc;
5236c819 977 bfd_signed_vma *local_got_refcounts;
69fc87f1 978 int tls_type, old_tls_type;
470b557a 979 Elf_Internal_Sym *isym;
a85d7ed0 980
0e1862bb 981 if (bfd_link_relocatable (info))
b34976b6 982 return TRUE;
a85d7ed0 983
0ffa91dd
NC		 984 BFD_ASSERT (is_s390_elf (abfd));
985
0451c93c 986 htab = elf_s390_hash_table (info);
0ffa91dd 987 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 988 sym_hashes = elf_sym_hashes (abfd);
5236c819 989 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 990
a85d7ed0
NC		 991 sreloc = NULL;
992
993 rel_end = relocs + sec->reloc_count;
994 for (rel = relocs; rel < rel_end; rel++)
995 {
69fc87f1 996 unsigned int r_type;
a85d7ed0
NC		 997 unsigned long r_symndx;
998 struct elf_link_hash_entry *h;
999
1000 r_symndx = ELF32_R_SYM (rel->r_info);
1001
0451c93c
MS		 1002 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1003 {
d003868e
AM		 1004 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1005 abfd, r_symndx);
b34976b6 1006 return FALSE;
0451c93c
MS		 1007 }
1008
a85d7ed0 1009 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK		 1010 {
1011 /* A local symbol. */
1012 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1013 abfd, r_symndx);
1014 if (isym == NULL)
1015 return FALSE;
1016
1017 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1018 {
1019 struct plt_entry *plt;
1020
0cb79d69
AK		 1021 if (htab->elf.dynobj == NULL)
1022 htab->elf.dynobj = abfd;
1023
470b557a
AK		 1024 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1025 return FALSE;
1026
1027 if (local_got_refcounts == NULL)
1028 {
1029 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
1030 return FALSE;
1031 local_got_refcounts = elf_local_got_refcounts (abfd);
1032 }
1033 plt = elf_s390_local_plt (abfd);
1034 plt[r_symndx].plt.refcount++;
1035 }
1036 h = NULL;
1037 }
a85d7ed0 1038 else
973a3492
L		 1039 {
1040 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1041 while (h->root.type == bfd_link_hash_indirect
1042 || h->root.type == bfd_link_hash_warning)
1043 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM		 1044
1045 /* PR15323, ref flags aren't set for references in the same
1046 object. */
1047 h->root.non_ir_ref = 1;
973a3492 1048 }
a85d7ed0 1049
5236c819
MS		 1050 /* Create got section and local_got_refcounts array if they
1051 are needed. */
69fc87f1
MS		 1052 r_type = elf_s390_tls_transition (info,
1053 ELF32_R_TYPE (rel->r_info),
1054 h == NULL);
1055 switch (r_type)
a85d7ed0
NC		 1056 {
1057 case R_390_GOT12:
5236c819 1058 case R_390_GOT16:
bd1ea41b 1059 case R_390_GOT20:
a85d7ed0 1060 case R_390_GOT32:
befc3abb 1061 case R_390_GOTENT:
5236c819
MS		 1062 case R_390_GOTPLT12:
1063 case R_390_GOTPLT16:
bd1ea41b 1064 case R_390_GOTPLT20:
5236c819
MS		 1065 case R_390_GOTPLT32:
1066 case R_390_GOTPLTENT:
69fc87f1
MS		 1067 case R_390_TLS_GD32:
1068 case R_390_TLS_GOTIE12:
bd1ea41b 1069 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1070 case R_390_TLS_GOTIE32:
1071 case R_390_TLS_IEENT:
1072 case R_390_TLS_IE32:
1073 case R_390_TLS_LDM32:
5236c819
MS		 1074 if (h == NULL
1075 && local_got_refcounts == NULL)
a85d7ed0 1076 {
470b557a 1077 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 1078 return FALSE;
470b557a 1079 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 1080 }
5236c819
MS		 1081 /* Fall through. */
1082 case R_390_GOTOFF16:
1083 case R_390_GOTOFF32:
0451c93c 1084 case R_390_GOTPC:
befc3abb 1085 case R_390_GOTPCDBL:
f41345a7 1086 if (htab->elf.sgot == NULL)
0451c93c
MS		 1087 {
1088 if (htab->elf.dynobj == NULL)
1089 htab->elf.dynobj = abfd;
1090 if (!create_got_section (htab->elf.dynobj, info))
b34976b6 1091 return FALSE;
0451c93c 1092 }
5236c819
MS		 1093 }
1094
470b557a
AK		 1095 if (h != NULL)
1096 {
1097 if (htab->elf.dynobj == NULL)
1098 htab->elf.dynobj = abfd;
1099 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1100 return FALSE;
1101
1102 /* Make sure an IFUNC symbol defined in a non-shared object
1103 always gets a PLT slot. */
1104 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1105 {
1106 /* The symbol is called by the dynamic loader in order
1107 to resolve the relocation. So it is in fact also
1108 referenced. */
1109 h->ref_regular = 1;
1110 h->needs_plt = 1;
1111 }
1112 }
69fc87f1 1113 switch (r_type)
5236c819 1114 {
5236c819
MS		 1115 case R_390_GOTPC:
1116 case R_390_GOTPCDBL:
470b557a
AK		 1117 /* These relocs do not need a GOT slot. They just load the
1118 GOT pointer itself or address something else relative to
1119 the GOT. Since the GOT pointer has been set up above we
1120 are done. */
a85d7ed0 1121 break;
01a53584
AK		 1122 case R_390_GOTOFF16:
1123 case R_390_GOTOFF32:
1124 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
1125 break;
a85d7ed0 1126
fb798c50 1127 case R_390_PLT12DBL:
26e41594 1128 case R_390_PLT16DBL:
fb798c50 1129 case R_390_PLT24DBL:
26e41594 1130 case R_390_PLT32DBL:
a85d7ed0 1131 case R_390_PLT32:
5236c819
MS		 1132 case R_390_PLTOFF16:
1133 case R_390_PLTOFF32:
a85d7ed0 1134 /* This symbol requires a procedure linkage table entry. We
26e41594
AM		 1135 actually build the entry in adjust_dynamic_symbol,
1136 because this might be a case of linking PIC code which is
1137 never referenced by a dynamic object, in which case we
1138 don't need to generate a procedure linkage table entry
1139 after all. */
a85d7ed0
NC		 1140
1141 /* If this is a local symbol, we resolve it directly without
26e41594 1142 creating a procedure linkage table entry. */
5236c819
MS		 1143 if (h != NULL)
1144 {
f5385ebf 1145 h->needs_plt = 1;
5236c819
MS		 1146 h->plt.refcount += 1;
1147 }
1148 break;
a85d7ed0 1149
5236c819
MS		 1150 case R_390_GOTPLT12:
1151 case R_390_GOTPLT16:
bd1ea41b 1152 case R_390_GOTPLT20:
5236c819
MS		 1153 case R_390_GOTPLT32:
1154 case R_390_GOTPLTENT:
1155 /* This symbol requires either a procedure linkage table entry
1156 or an entry in the local got. We actually build the entry
1157 in adjust_dynamic_symbol because whether this is really a
1158 global reference can change and with it the fact if we have
1159 to create a plt entry or a local got entry. To be able to
1160 make a once global symbol a local one we have to keep track
1161 of the number of gotplt references that exist for this
1162 symbol. */
1163 if (h != NULL)
1164 {
1165 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1166 h->needs_plt = 1;
5236c819
MS		 1167 h->plt.refcount += 1;
1168 }
1169 else
1170 local_got_refcounts[r_symndx] += 1;
a85d7ed0
NC		 1171 break;
1172
69fc87f1
MS		 1173 case R_390_TLS_LDM32:
1174 htab->tls_ldm_got.refcount += 1;
1175 break;
1176
1177 case R_390_TLS_IE32:
1178 case R_390_TLS_GOTIE12:
bd1ea41b 1179 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1180 case R_390_TLS_GOTIE32:
1181 case R_390_TLS_IEENT:
0e1862bb 1182 if (bfd_link_pic (info))
69fc87f1 1183 info->flags |= DF_STATIC_TLS;
ae9a127f 1184 /* Fall through. */
69fc87f1
MS		 1185
1186 case R_390_GOT12:
26e41594 1187 case R_390_GOT16:
bd1ea41b 1188 case R_390_GOT20:
69fc87f1
MS		 1189 case R_390_GOT32:
1190 case R_390_GOTENT:
1191 case R_390_TLS_GD32:
1192 /* This symbol requires a global offset table entry. */
1193 switch (r_type)
1194 {
1195 default:
1196 case R_390_GOT12:
1197 case R_390_GOT16:
bd1ea41b 1198 case R_390_GOT20:
69fc87f1
MS		 1199 case R_390_GOT32:
1200 case R_390_GOTENT:
1201 tls_type = GOT_NORMAL;
1202 break;
1203 case R_390_TLS_GD32:
1204 tls_type = GOT_TLS_GD;
1205 break;
1206 case R_390_TLS_IE32:
1207 case R_390_TLS_GOTIE32:
1208 tls_type = GOT_TLS_IE;
1209 break;
1210 case R_390_TLS_GOTIE12:
bd1ea41b 1211 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1212 case R_390_TLS_IEENT:
1213 tls_type = GOT_TLS_IE_NLT;
1214 break;
1215 }
1216
1217 if (h != NULL)
1218 {
1219 h->got.refcount += 1;
1220 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1221 }
1222 else
1223 {
1224 local_got_refcounts[r_symndx] += 1;
1225 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1226 }
1227 /* If a TLS symbol is accessed using IE at least once,
1228 there is no point to use dynamic model for it. */
1229 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1230 {
1231 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1232 {
1233 (*_bfd_error_handler)
d003868e
AM		 1234 (_("%B: `%s' accessed both as normal and thread local symbol"),
1235 abfd, h->root.root.string);
69fc87f1
MS		 1236 return FALSE;
1237 }
1238 if (old_tls_type > tls_type)
1239 tls_type = old_tls_type;
1240 }
1241
1242 if (old_tls_type != tls_type)
1243 {
1244 if (h != NULL)
1245 elf_s390_hash_entry (h)->tls_type = tls_type;
1246 else
1247 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1248 }
1249
1250 if (r_type != R_390_TLS_IE32)
1251 break;
ae9a127f 1252 /* Fall through. */
69fc87f1
MS		 1253
1254 case R_390_TLS_LE32:
e00d879a
AK		 1255 /* For static linking and executables this reloc will be
1256 calculated at linktime otherwise a TLS_TPOFF runtime
1257 reloc will be generated. */
0e1862bb 1258 if (r_type == R_390_TLS_LE32 && bfd_link_pie (info))
e00d879a
AK		 1259 break;
1260
0e1862bb 1261 if (!bfd_link_pic (info))
69fc87f1
MS		 1262 break;
1263 info->flags |= DF_STATIC_TLS;
ae9a127f 1264 /* Fall through. */
69fc87f1 1265
26e41594
AM		 1266 case R_390_8:
1267 case R_390_16:
a85d7ed0 1268 case R_390_32:
26e41594 1269 case R_390_PC16:
fb798c50 1270 case R_390_PC12DBL:
26e41594 1271 case R_390_PC16DBL:
fb798c50 1272 case R_390_PC24DBL:
befc3abb 1273 case R_390_PC32DBL:
a85d7ed0 1274 case R_390_PC32:
470b557a 1275 if (h != NULL)
0451c93c
MS		 1276 {
1277 /* If this reloc is in a read-only section, we might
1278 need a copy reloc. We can't check reliably at this
1279 stage whether the section is read-only, as input
1280 sections have not yet been mapped to output sections.
1281 Tentatively set the flag for now, and correct in
1282 adjust_dynamic_symbol. */
f5385ebf 1283 h->non_got_ref = 1;
ec338859 1284
0e1862bb 1285 if (!bfd_link_pic (info))
470b557a
AK		 1286 {
1287 /* We may need a .plt entry if the function this reloc
1288 refers to is in a shared lib. */
1289 h->plt.refcount += 1;
1290 }
0451c93c 1291 }
a85d7ed0
NC		 1292
1293 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1294 against a global symbol, or a non PC relative reloc
1295 against a local symbol, then we need to copy the reloc
1296 into the shared library. However, if we are linking with
1297 -Bsymbolic, we do not need to copy a reloc against a
1298 global symbol which is defined in an object we are
1299 including in the link (i.e., DEF_REGULAR is set). At
1300 this point we have not seen all the input files, so it is
1301 possible that DEF_REGULAR is not set now but will be set
1302 later (it is never cleared). In case of a weak definition,
1303 DEF_REGULAR may be cleared later by a strong definition in
1304 a shared library. We account for that possibility below by
1305 storing information in the relocs_copied field of the hash
1306 table entry. A similar situation occurs when creating
1307 shared libraries and symbol visibility changes render the
1308 symbol local.
1309
1310 If on the other hand, we are creating an executable, we
1311 may need to keep relocations for symbols satisfied by a
1312 dynamic library if we manage to avoid copy relocs for the
1313 symbol. */
0e1862bb 1314 if ((bfd_link_pic (info)
0451c93c 1315 && (sec->flags & SEC_ALLOC) != 0
ec338859 1316 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1317 && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1318 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1319 && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL
befc3abb 1320 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
0451c93c
MS		 1321 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1322 || (h != NULL
8c21ca21 1323 && (! SYMBOLIC_BIND (info, h)
0451c93c 1324 || h->root.type == bfd_link_hash_defweak
f5385ebf 1325 || !h->def_regular))))
64285810 1326 || (ELIMINATE_COPY_RELOCS
0e1862bb 1327 && !bfd_link_pic (info)
0451c93c
MS		 1328 && (sec->flags & SEC_ALLOC) != 0
1329 && h != NULL
1330 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1331 || !h->def_regular)))
a85d7ed0 1332 {
00d8c7a9
AK		 1333 struct elf_dyn_relocs *p;
1334 struct elf_dyn_relocs **head;
ec338859 1335
0451c93c
MS		 1336 /* We must copy these reloc types into the output file.
1337 Create a reloc section in dynobj and make room for
1338 this reloc. */
a85d7ed0
NC		 1339 if (sreloc == NULL)
1340 {
0451c93c
MS		 1341 if (htab->elf.dynobj == NULL)
1342 htab->elf.dynobj = abfd;
a85d7ed0 1343
83bac4b0
NC		 1344 sreloc = _bfd_elf_make_dynamic_reloc_section
1345 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1346
a85d7ed0 1347 if (sreloc == NULL)
83bac4b0 1348 return FALSE;
a85d7ed0
NC		 1349 }
1350
0451c93c
MS		 1351 /* If this is a global symbol, we count the number of
1352 relocations we need for this symbol. */
1353 if (h != NULL)
a85d7ed0 1354 {
ec338859 1355 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS		 1356 }
1357 else
1358 {
ec338859
AM		 1359 /* Track dynamic relocs needed for local syms too.
1360 We really need local syms available to do this
1361 easily. Oh well. */
ec338859 1362 asection *s;
6edfbbad 1363 void *vpp;
ae9a127f 1364
87d72d41
AM		 1365 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1366 abfd, r_symndx);
1367 if (isym == NULL)
b34976b6 1368 return FALSE;
ec338859 1369
87d72d41
AM		 1370 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1371 if (s == NULL)
1372 s = sec;
1373
6edfbbad 1374 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1375 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1376 }
1377
1378 p = *head;
1379 if (p == NULL || p->sec != sec)
1380 {
1381 bfd_size_type amt = sizeof *p;
ae9a127f 1382
00d8c7a9 1383 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1384 bfd_alloc (htab->elf.dynobj, amt));
1385 if (p == NULL)
b34976b6 1386 return FALSE;
ec338859
AM		 1387 p->next = *head;
1388 *head = p;
1389 p->sec = sec;
1390 p->count = 0;
1391 p->pc_count = 0;
a85d7ed0 1392 }
ec338859
AM		 1393
1394 p->count += 1;
1395 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
fb798c50 1396 || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL
ec338859 1397 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
fb798c50 1398 || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL
befc3abb 1399 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
ec338859
AM		 1400 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1401 p->pc_count += 1;
a85d7ed0 1402 }
a85d7ed0 1403 break;
ec338859 1404
a85d7ed0
NC		 1405 /* This relocation describes the C++ object vtable hierarchy.
1406 Reconstruct it for later use during GC. */
26e41594 1407 case R_390_GNU_VTINHERIT:
c152c796 1408 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
26e41594
AM		 1409 return FALSE;
1410 break;
ec338859 1411
a85d7ed0
NC		 1412 /* This relocation describes which C++ vtable entries are actually
1413 used. Record for later use during GC. */
26e41594 1414 case R_390_GNU_VTENTRY:
d17e0c6e
JB		 1415 BFD_ASSERT (h != NULL);
1416 if (h != NULL
1417 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
26e41594
AM		 1418 return FALSE;
1419 break;
ec338859 1420
a85d7ed0
NC		 1421 default:
1422 break;
1423 }
1424 }
1425
b34976b6 1426 return TRUE;
a85d7ed0
NC		 1427}
1428
1429/* Return the section that should be marked against GC for a given
1430 relocation. */
1431
1432static asection *
07adf181
AM		 1433elf_s390_gc_mark_hook (asection *sec,
1434 struct bfd_link_info *info,
1435 Elf_Internal_Rela *rel,
1436 struct elf_link_hash_entry *h,
1437 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1438{
1439 if (h != NULL)
07adf181
AM		 1440 switch (ELF32_R_TYPE (rel->r_info))
1441 {
1442 case R_390_GNU_VTINHERIT:
1443 case R_390_GNU_VTENTRY:
1444 return NULL;
1445 }
1446 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0 1447
a85d7ed0
NC		 1448}
1449
1450/* Update the got entry reference counts for the section being removed. */
1451
b34976b6 1452static bfd_boolean
07adf181
AM		 1453elf_s390_gc_sweep_hook (bfd *abfd,
1454 struct bfd_link_info *info,
1455 asection *sec,
1456 const Elf_Internal_Rela *relocs)
a85d7ed0 1457{
470b557a 1458 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1459 Elf_Internal_Shdr *symtab_hdr;
1460 struct elf_link_hash_entry **sym_hashes;
1461 bfd_signed_vma *local_got_refcounts;
1462 const Elf_Internal_Rela *rel, *relend;
a85d7ed0 1463
0e1862bb 1464 if (bfd_link_relocatable (info))
7dda2462
TG		 1465 return TRUE;
1466
470b557a
AK		 1467 htab = elf_s390_hash_table (info);
1468 if (htab == NULL)
1469 return FALSE;
1470
ec338859 1471 elf_section_data (sec)->local_dynrel = NULL;
a85d7ed0 1472
0ffa91dd 1473 symtab_hdr = &elf_symtab_hdr (abfd);
0451c93c
MS		 1474 sym_hashes = elf_sym_hashes (abfd);
1475 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0
NC		 1476
1477 relend = relocs + sec->reloc_count;
1478 for (rel = relocs; rel < relend; rel++)
5236c819 1479 {
26e41594
AM		 1480 unsigned long r_symndx;
1481 unsigned int r_type;
1482 struct elf_link_hash_entry *h = NULL;
1483
5236c819 1484 r_symndx = ELF32_R_SYM (rel->r_info);
26e41594
AM		 1485 if (r_symndx >= symtab_hdr->sh_info)
1486 {
1487 struct elf_s390_link_hash_entry *eh;
00d8c7a9
AK		 1488 struct elf_dyn_relocs **pp;
1489 struct elf_dyn_relocs *p;
0451c93c 1490
26e41594 1491 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1492 while (h->root.type == bfd_link_hash_indirect
1493 || h->root.type == bfd_link_hash_warning)
1494 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1495 eh = (struct elf_s390_link_hash_entry *) h;
5236c819 1496
26e41594
AM		 1497 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1498 if (p->sec == sec)
1499 {
1500 /* Everything must go for SEC. */
1501 *pp = p->next;
1502 break;
1503 }
1504 }
470b557a
AK		 1505 else
1506 {
1507 Elf_Internal_Sym *isym;
1508
1509 /* A local symbol. */
1510 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1511 abfd, r_symndx);
1512 if (isym == NULL)
1513 return FALSE;
1514
1515 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1516 {
1517 struct plt_entry *plt = elf_s390_local_plt (abfd);
1518 if (plt[r_symndx].plt.refcount > 0)
1519 plt[r_symndx].plt.refcount--;
1520 }
1521 }
26e41594
AM		 1522
1523 r_type = ELF32_R_TYPE (rel->r_info);
1524 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
69fc87f1 1525 switch (r_type)
5236c819 1526 {
69fc87f1
MS		 1527 case R_390_TLS_LDM32:
1528 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1529 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1530 break;
1531
ef05be83
AK		 1532 case R_390_GOTOFF16:
1533 case R_390_GOTOFF32:
01a53584
AK		 1534 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1535 {
1536 h->plt.refcount--;
1537 break;
1538 }
1539
ef05be83
AK		 1540 case R_390_GOTPC:
1541 case R_390_GOTPCDBL:
1542 break;
1543
69fc87f1
MS		 1544 case R_390_TLS_GD32:
1545 case R_390_TLS_IE32:
1546 case R_390_TLS_GOTIE12:
bd1ea41b 1547 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1548 case R_390_TLS_GOTIE32:
1549 case R_390_TLS_IEENT:
5236c819
MS		 1550 case R_390_GOT12:
1551 case R_390_GOT16:
bd1ea41b 1552 case R_390_GOT20:
5236c819 1553 case R_390_GOT32:
5236c819
MS		 1554 case R_390_GOTENT:
1555 if (h != NULL)
1556 {
1557 if (h->got.refcount > 0)
1558 h->got.refcount -= 1;
1559 }
1560 else if (local_got_refcounts != NULL)
1561 {
1562 if (local_got_refcounts[r_symndx] > 0)
1563 local_got_refcounts[r_symndx] -= 1;
1564 }
26e41594 1565 break;
a85d7ed0 1566
5236c819
MS		 1567 case R_390_8:
1568 case R_390_12:
1569 case R_390_16:
bd1ea41b 1570 case R_390_20:
5236c819
MS		 1571 case R_390_32:
1572 case R_390_PC16:
fb798c50 1573 case R_390_PC12DBL:
5236c819 1574 case R_390_PC16DBL:
fb798c50 1575 case R_390_PC24DBL:
5236c819
MS		 1576 case R_390_PC32DBL:
1577 case R_390_PC32:
0e1862bb 1578 if (bfd_link_pic (info))
26e41594
AM		 1579 break;
1580 /* Fall through. */
1581
fb798c50 1582 case R_390_PLT12DBL:
69fc87f1 1583 case R_390_PLT16DBL:
fb798c50 1584 case R_390_PLT24DBL:
69fc87f1
MS		 1585 case R_390_PLT32DBL:
1586 case R_390_PLT32:
1587 case R_390_PLTOFF16:
1588 case R_390_PLTOFF32:
1589 if (h != NULL)
1590 {
1591 if (h->plt.refcount > 0)
1592 h->plt.refcount -= 1;
1593 }
1594 break;
1595
1596 case R_390_GOTPLT12:
1597 case R_390_GOTPLT16:
bd1ea41b 1598 case R_390_GOTPLT20:
69fc87f1
MS		 1599 case R_390_GOTPLT32:
1600 case R_390_GOTPLTENT:
1601 if (h != NULL)
1602 {
1603 if (h->plt.refcount > 0)
1604 {
1605 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1606 h->plt.refcount -= 1;
1607 }
1608 }
1609 else if (local_got_refcounts != NULL)
1610 {
1611 if (local_got_refcounts[r_symndx] > 0)
1612 local_got_refcounts[r_symndx] -= 1;
1613 }
1614 break;
1615
5236c819
MS		 1616 default:
1617 break;
1618 }
1619 }
a85d7ed0 1620
b34976b6 1621 return TRUE;
a85d7ed0
NC		 1622}
1623
5236c819
MS		 1624/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1625 entry but we found we will not create any. Called when we find we will
1626 not have any PLT for this symbol, by for example
1627 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1628 or elf_s390_size_dynamic_sections if no dynamic sections will be
1629 created (we're only linking static objects). */
1630
1631static void
2c3fc389 1632elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1633{
1634 if (h->elf.root.type == bfd_link_hash_warning)
1635 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1636
1637 if (h->gotplt_refcount <= 0)
1638 return;
1639
1640 /* We simply add the number of gotplt references to the number
1641 * of got references for this symbol. */
1642 h->elf.got.refcount += h->gotplt_refcount;
1643 h->gotplt_refcount = -1;
1644}
1645
a85d7ed0
NC		 1646/* Adjust a symbol defined by a dynamic object and referenced by a
1647 regular object. The current definition is in some section of the
1648 dynamic object, but we're not including those sections. We have to
1649 change the definition to something the rest of the link can
1650 understand. */
1651
b34976b6 1652static bfd_boolean
2c3fc389
NC		 1653elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1654 struct elf_link_hash_entry *h)
a85d7ed0 1655{
0451c93c 1656 struct elf_s390_link_hash_table *htab;
a85d7ed0 1657 asection *s;
a85d7ed0 1658
470b557a
AK		 1659 /* STT_GNU_IFUNC symbol must go through PLT. */
1660 if (s390_is_ifunc_symbol_p (h))
1661 return TRUE;
1662
a85d7ed0
NC		 1663 /* If this is a function, put it in the procedure linkage table. We
1664 will fill in the contents of the procedure linkage table later
cedb70c5 1665 (although we could actually do it here). */
a85d7ed0 1666 if (h->type == STT_FUNC
f5385ebf 1667 || h->needs_plt)
a85d7ed0 1668 {
0451c93c 1669 if (h->plt.refcount <= 0
8c21ca21
AK		 1670 || SYMBOL_CALLS_LOCAL (info, h)
1671 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1672 && h->root.type != bfd_link_hash_undefweak))
a85d7ed0
NC		 1673 {
1674 /* This case can occur if we saw a PLT32 reloc in an input
26e41594
AM		 1675 file, but the symbol was never referred to by a dynamic
1676 object, or if all references were garbage collected. In
a85d7ed0
NC		 1677 such a case, we don't actually need to build a procedure
1678 linkage table, and we can just do a PC32 reloc instead. */
1679 h->plt.offset = (bfd_vma) -1;
f5385ebf 1680 h->needs_plt = 0;
5236c819 1681 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1682 }
1683
b34976b6 1684 return TRUE;
a85d7ed0 1685 }
bbd7ec4a 1686 else
0451c93c
MS		 1687 /* It's possible that we incorrectly decided a .plt reloc was
1688 needed for an R_390_PC32 reloc to a non-function sym in
1689 check_relocs. We can't decide accurately between function and
1690 non-function syms in check-relocs; Objects loaded later in
1691 the link may change h->type. So fix it now. */
bbd7ec4a 1692 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1693
1694 /* If this is a weak symbol, and there is a real definition, the
1695 processor independent code will have arranged for us to see the
1696 real definition first, and we can just use the same value. */
f6e332e6 1697 if (h->u.weakdef != NULL)
a85d7ed0 1698 {
f6e332e6
AM		 1699 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1700 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1701 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1702 h->root.u.def.value = h->u.weakdef->root.u.def.value;
64285810 1703 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1704 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1705 return TRUE;
a85d7ed0
NC		 1706 }
1707
1708 /* This is a reference to a symbol defined by a dynamic object which
1709 is not a function. */
1710
1711 /* If we are creating a shared library, we must presume that the
1712 only references to the symbol are via the global offset table.
1713 For such cases we need not do anything here; the relocations will
1714 be handled correctly by relocate_section. */
0e1862bb 1715 if (bfd_link_pic (info))
b34976b6 1716 return TRUE;
a85d7ed0
NC		 1717
1718 /* If there are no references to this symbol that do not use the
1719 GOT, we don't need to generate a copy reloc. */
f5385ebf 1720 if (!h->non_got_ref)
b34976b6 1721 return TRUE;
a85d7ed0 1722
0451c93c
MS		 1723 /* If -z nocopyreloc was given, we won't generate them either. */
1724 if (info->nocopyreloc)
1725 {
f5385ebf 1726 h->non_got_ref = 0;
b34976b6 1727 return TRUE;
0451c93c
MS		 1728 }
1729
64285810 1730 if (ELIMINATE_COPY_RELOCS)
0451c93c 1731 {
64285810 1732 struct elf_s390_link_hash_entry * eh;
00d8c7a9 1733 struct elf_dyn_relocs *p;
0451c93c 1734
64285810
MS		 1735 eh = (struct elf_s390_link_hash_entry *) h;
1736 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1737 {
1738 s = p->sec->output_section;
1739 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1740 break;
1741 }
1742
1743 /* If we didn't find any dynamic relocs in read-only sections, then
1744 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1745 if (p == NULL)
1746 {
f5385ebf 1747 h->non_got_ref = 0;
64285810
MS		 1748 return TRUE;
1749 }
0451c93c
MS		 1750 }
1751
a85d7ed0
NC		 1752 /* We must allocate the symbol in our .dynbss section, which will
1753 become part of the .bss section of the executable. There will be
1754 an entry for this symbol in the .dynsym section. The dynamic
1755 object will contain position independent code, so all references
1756 from the dynamic object to this symbol will go through the global
1757 offset table. The dynamic linker will use the .dynsym entry to
1758 determine the address it must put in the global offset table, so
1759 both the dynamic object and the regular object will refer to the
1760 same memory location for the variable. */
1761
0451c93c 1762 htab = elf_s390_hash_table (info);
a85d7ed0 1763
0451c93c
MS		 1764 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1765 copy the initial value out of the dynamic object and into the
1766 runtime process image. */
1d7e9d18 1767 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1768 {
eea6121a 1769 htab->srelbss->size += sizeof (Elf32_External_Rela);
f5385ebf 1770 h->needs_copy = 1;
a85d7ed0
NC		 1771 }
1772
0451c93c 1773 s = htab->sdynbss;
a85d7ed0 1774
6cabe1ea 1775 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a85d7ed0
NC		 1776}
1777
0451c93c
MS		 1778/* Allocate space in .plt, .got and associated reloc sections for
1779 dynamic relocs. */
1780
b34976b6 1781static bfd_boolean
2c3fc389 1782allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1783{
1784 struct bfd_link_info *info;
1785 struct elf_s390_link_hash_table *htab;
470b557a 1786 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1787 struct elf_dyn_relocs *p;
0451c93c 1788
e92d460e 1789 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1790 return TRUE;
0451c93c
MS		 1791
1792 info = (struct bfd_link_info *) inf;
1793 htab = elf_s390_hash_table (info);
1794
470b557a
AK		 1795 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1796 here if it is defined and referenced in a non-shared object. */
1797 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
61643fba 1798 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
470b557a
AK		 1799 else if (htab->elf.dynamic_sections_created
1800 && h->plt.refcount > 0)
0451c93c
MS		 1801 {
1802 /* Make sure this symbol is output as a dynamic symbol.
1803 Undefined weak syms won't yet be marked as dynamic. */
1804 if (h->dynindx == -1
f5385ebf 1805 && !h->forced_local)
0451c93c 1806 {
c152c796 1807 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1808 return FALSE;
0451c93c
MS		 1809 }
1810
0e1862bb 1811 if (bfd_link_pic (info)
4ec72bde 1812 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1813 {
f41345a7 1814 asection *s = htab->elf.splt;
0451c93c
MS		 1815
1816 /* If this is the first .plt entry, make room for the special
1817 first entry. */
eea6121a
AM		 1818 if (s->size == 0)
1819 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1820
eea6121a 1821 h->plt.offset = s->size;
0451c93c
MS		 1822
1823 /* If this symbol is not defined in a regular file, and we are
1824 not generating a shared library, then set the symbol to this
1825 location in the .plt. This is required to make function
1826 pointers compare as equal between the normal executable and
1827 the shared library. */
0e1862bb 1828 if (! bfd_link_pic (info)
f5385ebf 1829 && !h->def_regular)
0451c93c
MS		 1830 {
1831 h->root.u.def.section = s;
1832 h->root.u.def.value = h->plt.offset;
1833 }
ec338859 1834
0451c93c 1835 /* Make room for this entry. */
eea6121a 1836 s->size += PLT_ENTRY_SIZE;
ec338859 1837
0451c93c
MS		 1838 /* We also need to make an entry in the .got.plt section, which
1839 will be placed in the .got section by the linker script. */
f41345a7 1840 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1841
1842 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1843 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1844 }
1845 else
1846 {
1847 h->plt.offset = (bfd_vma) -1;
f5385ebf 1848 h->needs_plt = 0;
5236c819 1849 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c 1850 }
ec338859 1851 }
0451c93c
MS		 1852 else
1853 {
1854 h->plt.offset = (bfd_vma) -1;
f5385ebf 1855 h->needs_plt = 0;
5236c819 1856 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
ec338859
AM		 1857 }
1858
69fc87f1
MS		 1859 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1860 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1861 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1862 we can save the dynamic TLS relocation. */
1863 if (h->got.refcount > 0
0e1862bb 1864 && !bfd_link_pic (info)
69fc87f1
MS		 1865 && h->dynindx == -1
1866 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
0451c93c 1867 {
69fc87f1
MS		 1868 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1869 /* For the GOTIE access without a literal pool entry the offset has
1870 to be stored somewhere. The immediate value in the instruction
1871 is not bit enough so the value is stored in the got. */
1872 {
f41345a7
AK		 1873 h->got.offset = htab->elf.sgot->size;
1874 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1875 }
1876 else
1877 h->got.offset = (bfd_vma) -1;
1878 }
1879 else if (h->got.refcount > 0)
1880 {
0451c93c 1881 asection *s;
b34976b6 1882 bfd_boolean dyn;
69fc87f1 1883 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1884
1885 /* Make sure this symbol is output as a dynamic symbol.
1886 Undefined weak syms won't yet be marked as dynamic. */
1887 if (h->dynindx == -1
f5385ebf 1888 && !h->forced_local)
0451c93c 1889 {
c152c796 1890 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1891 return FALSE;
0451c93c
MS		 1892 }
1893
f41345a7 1894 s = htab->elf.sgot;
eea6121a
AM		 1895 h->got.offset = s->size;
1896 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1897 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1898 if (tls_type == GOT_TLS_GD)
eea6121a 1899 s->size += GOT_ENTRY_SIZE;
0451c93c 1900 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1901 /* R_390_TLS_IE32 needs one dynamic relocation,
1902 R_390_TLS_GD32 needs one if local symbol and two if global. */
1903 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1904 || tls_type >= GOT_TLS_IE)
f41345a7 1905 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1 1906 else if (tls_type == GOT_TLS_GD)
f41345a7 1907 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela);
82058a73
MS		 1908 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1909 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 1910 && (bfd_link_pic (info)
82058a73 1911 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1912 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1913 }
1914 else
1915 h->got.offset = (bfd_vma) -1;
1916
0451c93c 1917 if (eh->dyn_relocs == NULL)
b34976b6 1918 return TRUE;
0451c93c
MS		 1919
1920 /* In the shared -Bsymbolic case, discard space allocated for
1921 dynamic pc-relative relocs against symbols which turn out to be
1922 defined in regular objects. For the normal shared case, discard
1923 space for pc-relative relocs that have become local due to symbol
1924 visibility changes. */
1925
0e1862bb 1926 if (bfd_link_pic (info))
0451c93c 1927 {
8c21ca21 1928 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1929 {
00d8c7a9 1930 struct elf_dyn_relocs **pp;
0451c93c
MS		 1931
1932 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1933 {
1934 p->count -= p->pc_count;
1935 p->pc_count = 0;
1936 if (p->count == 0)
1937 *pp = p->next;
1938 else
1939 pp = &p->next;
1940 }
1941 }
82058a73
MS		 1942
1943 /* Also discard relocs on undefined weak syms with non-default
1944 visibility. */
22d606e9 1945 if (eh->dyn_relocs != NULL
82058a73 1946 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 1947 {
1948 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1949 eh->dyn_relocs = NULL;
1950
1951 /* Make sure undefined weak symbols are output as a dynamic
1952 symbol in PIEs. */
1953 else if (h->dynindx == -1
1954 && !h->forced_local)
1955 {
1956 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1957 return FALSE;
1958 }
1959 }
0451c93c 1960 }
64285810 1961 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1962 {
1963 /* For the non-shared case, discard space for relocs against
1964 symbols which turn out to need copy relocs or are not
1965 dynamic. */
1966
f5385ebf
AM		 1967 if (!h->non_got_ref
1968 && ((h->def_dynamic
1969 && !h->def_regular)
0451c93c
MS		 1970 || (htab->elf.dynamic_sections_created
1971 && (h->root.type == bfd_link_hash_undefweak
1972 || h->root.type == bfd_link_hash_undefined))))
1973 {
1974 /* Make sure this symbol is output as a dynamic symbol.
1975 Undefined weak syms won't yet be marked as dynamic. */
1976 if (h->dynindx == -1
f5385ebf 1977 && !h->forced_local)
0451c93c 1978 {
c152c796 1979 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1980 return FALSE;
0451c93c
MS		 1981 }
1982
1983 /* If that succeeded, we know we'll be keeping all the
1984 relocs. */
1985 if (h->dynindx != -1)
1986 goto keep;
1987 }
1988
1989 eh->dyn_relocs = NULL;
1990
ec338859 1991 keep: ;
0451c93c
MS		 1992 }
1993
1994 /* Finally, allocate space. */
1995 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1996 {
1997 asection *sreloc = elf_section_data (p->sec)->sreloc;
ae9a127f 1998
eea6121a 1999 sreloc->size += p->count * sizeof (Elf32_External_Rela);
0451c93c
MS		 2000 }
2001
b34976b6 2002 return TRUE;
0451c93c
MS		 2003}
2004
2005/* Find any dynamic relocs that apply to read-only sections. */
2006
b34976b6 2007static bfd_boolean
2c3fc389 2008readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 2009{
2010 struct elf_s390_link_hash_entry *eh;
00d8c7a9 2011 struct elf_dyn_relocs *p;
0451c93c
MS		 2012
2013 eh = (struct elf_s390_link_hash_entry *) h;
2014 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2015 {
2016 asection *s = p->sec->output_section;
2017
2018 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2019 {
2020 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2021
2022 info->flags |= DF_TEXTREL;
2023
2024 /* Not an error, just cut short the traversal. */
b34976b6 2025 return FALSE;
0451c93c
MS		 2026 }
2027 }
b34976b6 2028 return TRUE;
0451c93c
MS		 2029}
2030
a85d7ed0
NC		 2031/* Set the sizes of the dynamic sections. */
2032
b34976b6 2033static bfd_boolean
2c3fc389
NC		 2034elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2035 struct bfd_link_info *info)
a85d7ed0 2036{
0451c93c 2037 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2038 bfd *dynobj;
2039 asection *s;
b34976b6 2040 bfd_boolean relocs;
0451c93c 2041 bfd *ibfd;
a85d7ed0 2042
0451c93c
MS		 2043 htab = elf_s390_hash_table (info);
2044 dynobj = htab->elf.dynobj;
2045 if (dynobj == NULL)
2046 abort ();
a85d7ed0 2047
0451c93c 2048 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2049 {
2050 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 2051 if (bfd_link_executable (info) && !info->nointerp)
a85d7ed0 2052 {
3d4d4302 2053 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 2054 if (s == NULL)
2055 abort ();
eea6121a 2056 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 2057 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2058 }
2059 }
a85d7ed0 2060
0451c93c
MS		 2061 /* Set up .got offsets for local syms, and space for local dynamic
2062 relocs. */
c72f2fb2 2063 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a85d7ed0 2064 {
0451c93c
MS		 2065 bfd_signed_vma *local_got;
2066 bfd_signed_vma *end_local_got;
69fc87f1 2067 char *local_tls_type;
0451c93c
MS		 2068 bfd_size_type locsymcount;
2069 Elf_Internal_Shdr *symtab_hdr;
2070 asection *srela;
470b557a
AK		 2071 struct plt_entry *local_plt;
2072 unsigned int i;
a85d7ed0 2073
0ffa91dd 2074 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 2075 continue;
2076
0451c93c 2077 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 2078 {
00d8c7a9 2079 struct elf_dyn_relocs *p;
0451c93c 2080
6edfbbad 2081 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 2082 {
ec338859
AM		 2083 if (!bfd_is_abs_section (p->sec)
2084 && bfd_is_abs_section (p->sec->output_section))
2085 {
2086 /* Input section has been discarded, either because
2087 it is a copy of a linkonce section or due to
2088 linker script /DISCARD/, so we'll be discarding
2089 the relocs too. */
2090 }
248866a8 2091 else if (p->count != 0)
ec338859
AM		 2092 {
2093 srela = elf_section_data (p->sec)->sreloc;
eea6121a 2094 srela->size += p->count * sizeof (Elf32_External_Rela);
248866a8
AM		 2095 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2096 info->flags |= DF_TEXTREL;
ec338859 2097 }
a85d7ed0
NC		 2098 }
2099 }
0451c93c
MS		 2100
2101 local_got = elf_local_got_refcounts (ibfd);
2102 if (!local_got)
2103 continue;
2104
0ffa91dd 2105 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 2106 locsymcount = symtab_hdr->sh_info;
2107 end_local_got = local_got + locsymcount;
69fc87f1 2108 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 2109 s = htab->elf.sgot;
2110 srela = htab->elf.srelgot;
69fc87f1 2111 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 2112 {
0451c93c 2113 if (*local_got > 0)
a85d7ed0 2114 {
eea6121a
AM		 2115 *local_got = s->size;
2116 s->size += GOT_ENTRY_SIZE;
69fc87f1 2117 if (*local_tls_type == GOT_TLS_GD)
eea6121a 2118 s->size += GOT_ENTRY_SIZE;
0e1862bb 2119 if (bfd_link_pic (info))
eea6121a 2120 srela->size += sizeof (Elf32_External_Rela);
a85d7ed0
NC		 2121 }
2122 else
0451c93c
MS		 2123 *local_got = (bfd_vma) -1;
2124 }
470b557a
AK		 2125 local_plt = elf_s390_local_plt (ibfd);
2126 for (i = 0; i < symtab_hdr->sh_info; i++)
2127 {
2128 if (local_plt[i].plt.refcount > 0)
2129 {
2130 local_plt[i].plt.offset = htab->elf.iplt->size;
2131 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2132 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2133 htab->elf.irelplt->size += RELA_ENTRY_SIZE;
2134 }
2135 else
2136 local_plt[i].plt.offset = (bfd_vma) -1;
2137 }
0451c93c
MS		 2138 }
2139
69fc87f1
MS		 2140 if (htab->tls_ldm_got.refcount > 0)
2141 {
2142 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2143 relocs. */
f41345a7
AK		 2144 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2145 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2146 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1
MS		 2147 }
2148 else
2149 htab->tls_ldm_got.offset = -1;
2150
0451c93c
MS		 2151 /* Allocate global sym .plt and .got entries, and space for global
2152 sym dynamic relocs. */
2c3fc389 2153 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 2154
2155 /* We now have determined the sizes of the various dynamic sections.
2156 Allocate memory for them. */
b34976b6 2157 relocs = FALSE;
0451c93c
MS		 2158 for (s = dynobj->sections; s != NULL; s = s->next)
2159 {
2160 if ((s->flags & SEC_LINKER_CREATED) == 0)
2161 continue;
2162
f41345a7
AK		 2163 if (s == htab->elf.splt
2164 || s == htab->elf.sgot
2165 || s == htab->elf.sgotplt
470b557a
AK		 2166 || s == htab->sdynbss
2167 || s == htab->elf.iplt
2168 || s == htab->elf.igotplt
2169 || s == htab->irelifunc)
0451c93c
MS		 2170 {
2171 /* Strip this section if we don't need it; see the
2172 comment below. */
a85d7ed0 2173 }
0112cd26 2174 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 2175 {
eea6121a 2176 if (s->size != 0)
b34976b6 2177 relocs = TRUE;
ec338859 2178
0451c93c
MS		 2179 /* We use the reloc_count field as a counter if we need
2180 to copy relocs into the output file. */
2181 s->reloc_count = 0;
2182 }
2183 else
a85d7ed0
NC		 2184 {
2185 /* It's not one of our sections, so don't allocate space. */
2186 continue;
2187 }
2188
eea6121a 2189 if (s->size == 0)
a85d7ed0 2190 {
0451c93c
MS		 2191 /* If we don't need this section, strip it from the
2192 output file. This is to handle .rela.bss and
2193 .rela.plt. We must create it in
2194 create_dynamic_sections, because it must be created
2195 before the linker maps input sections to output
2196 sections. The linker does that before
2197 adjust_dynamic_symbol is called, and it is that
2198 function which decides whether anything needs to go
2199 into these sections. */
2200
8423293d 2201 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 2202 continue;
2203 }
2204
c456f082
AM		 2205 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2206 continue;
2207
0451c93c
MS		 2208 /* Allocate memory for the section contents. We use bfd_zalloc
2209 here in case unused entries are not reclaimed before the
2210 section's contents are written out. This should not happen,
2211 but this way if it does, we get a R_390_NONE reloc instead
2212 of garbage. */
eea6121a 2213 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 2214 if (s->contents == NULL)
b34976b6 2215 return FALSE;
a85d7ed0 2216 }
ec338859 2217
0451c93c 2218 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2219 {
2220 /* Add some entries to the .dynamic section. We fill in the
2221 values later, in elf_s390_finish_dynamic_sections, but we
2222 must add the entries now so that we get the correct size for
2223 the .dynamic section. The DT_DEBUG entry is filled in by the
2224 dynamic linker and used by the debugger. */
dc810e39 2225#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2226 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
ec338859 2227
0e1862bb 2228 if (bfd_link_executable (info))
a85d7ed0 2229 {
dc810e39 2230 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2231 return FALSE;
a85d7ed0 2232 }
ec338859 2233
f41345a7 2234 if (htab->elf.splt->size != 0)
a85d7ed0 2235 {
dc810e39
AM		 2236 if (!add_dynamic_entry (DT_PLTGOT, 0)
2237 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2238 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2239 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2240 return FALSE;
a85d7ed0 2241 }
ec338859 2242
a85d7ed0 2243 if (relocs)
26e41594
AM		 2244 {
2245 if (!add_dynamic_entry (DT_RELA, 0)
2246 || !add_dynamic_entry (DT_RELASZ, 0)
2247 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 2248 return FALSE;
a85d7ed0 2249
0451c93c
MS		 2250 /* If any dynamic relocs apply to a read-only section,
2251 then we need a DT_TEXTREL entry. */
248866a8 2252 if ((info->flags & DF_TEXTREL) == 0)
2c3fc389 2253 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
ec338859 2254
0451c93c
MS		 2255 if ((info->flags & DF_TEXTREL) != 0)
2256 {
2257 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2258 return FALSE;
0451c93c 2259 }
a85d7ed0
NC		 2260 }
2261 }
dc810e39 2262#undef add_dynamic_entry
ec338859 2263
b34976b6 2264 return TRUE;
a85d7ed0
NC		 2265}
2266
69fc87f1
MS		 2267/* Return the base VMA address which should be subtracted from real addresses
2268 when resolving @dtpoff relocation.
2269 This is PT_TLS segment p_vaddr. */
2270
2271static bfd_vma
2c3fc389 2272dtpoff_base (struct bfd_link_info *info)
69fc87f1 2273{
e1918d23
AM		 2274 /* If tls_sec is NULL, we should have signalled an error already. */
2275 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2276 return 0;
e1918d23 2277 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2278}
2279
2280/* Return the relocation value for @tpoff relocation
2281 if STT_TLS virtual address is ADDRESS. */
2282
2283static bfd_vma
2c3fc389 2284tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2285{
e1918d23 2286 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2287
e1918d23
AM		 2288 /* If tls_sec is NULL, we should have signalled an error already. */
2289 if (htab->tls_sec == NULL)
69fc87f1 2290 return 0;
e1918d23 2291 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2292}
2293
2294/* Complain if TLS instruction relocation is against an invalid
2295 instruction. */
2296
2297static void
2c3fc389
NC		 2298invalid_tls_insn (bfd *input_bfd,
2299 asection *input_section,
2300 Elf_Internal_Rela *rel)
69fc87f1
MS		 2301{
2302 reloc_howto_type *howto;
2303
2304 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2305 (*_bfd_error_handler)
d003868e
AM		 2306 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2307 input_bfd,
2308 input_section,
69fc87f1
MS		 2309 (long) rel->r_offset,
2310 howto->name);
77df2968 2311 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2312}
2313
a85d7ed0
NC		 2314/* Relocate a 390 ELF section. */
2315
b34976b6 2316static bfd_boolean
2c3fc389
NC		 2317elf_s390_relocate_section (bfd *output_bfd,
2318 struct bfd_link_info *info,
2319 bfd *input_bfd,
2320 asection *input_section,
2321 bfd_byte *contents,
2322 Elf_Internal_Rela *relocs,
2323 Elf_Internal_Sym *local_syms,
2324 asection **local_sections)
a85d7ed0 2325{
0451c93c 2326 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2327 Elf_Internal_Shdr *symtab_hdr;
2328 struct elf_link_hash_entry **sym_hashes;
2329 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2330 Elf_Internal_Rela *rel;
2331 Elf_Internal_Rela *relend;
2332
0ffa91dd
NC		 2333 BFD_ASSERT (is_s390_elf (input_bfd));
2334
0451c93c 2335 htab = elf_s390_hash_table (info);
0ffa91dd 2336 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2337 sym_hashes = elf_sym_hashes (input_bfd);
2338 local_got_offsets = elf_local_got_offsets (input_bfd);
2339
a85d7ed0
NC		 2340 rel = relocs;
2341 relend = relocs + input_section->reloc_count;
2342 for (; rel < relend; rel++)
2343 {
5236c819 2344 unsigned int r_type;
a85d7ed0
NC		 2345 reloc_howto_type *howto;
2346 unsigned long r_symndx;
2347 struct elf_link_hash_entry *h;
2348 Elf_Internal_Sym *sym;
2349 asection *sec;
0451c93c 2350 bfd_vma off;
a85d7ed0 2351 bfd_vma relocation;
b34976b6 2352 bfd_boolean unresolved_reloc;
a85d7ed0 2353 bfd_reloc_status_type r;
69fc87f1 2354 int tls_type;
470b557a 2355 asection *base_got = htab->elf.sgot;
ec338859 2356
a85d7ed0
NC		 2357 r_type = ELF32_R_TYPE (rel->r_info);
2358 if (r_type == (int) R_390_GNU_VTINHERIT
26e41594
AM		 2359 || r_type == (int) R_390_GNU_VTENTRY)
2360 continue;
5236c819 2361 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2362 {
2363 bfd_set_error (bfd_error_bad_value);
b34976b6 2364 return FALSE;
a85d7ed0 2365 }
ec338859 2366
b491616a 2367 howto = elf_howto_table + r_type;
a85d7ed0 2368 r_symndx = ELF32_R_SYM (rel->r_info);
5236c819 2369
a85d7ed0
NC		 2370 h = NULL;
2371 sym = NULL;
2372 sec = NULL;
b34976b6 2373 unresolved_reloc = FALSE;
a85d7ed0
NC		 2374 if (r_symndx < symtab_hdr->sh_info)
2375 {
2376 sym = local_syms + r_symndx;
2377 sec = local_sections[r_symndx];
470b557a
AK		 2378 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2379 {
2380 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2381 if (local_plt == NULL)
2382 return FALSE;
2383
2384 /* Address of the PLT slot. */
2385 relocation = (htab->elf.iplt->output_section->vma
2386 + htab->elf.iplt->output_offset
2387 + local_plt[r_symndx].plt.offset);
2388
2389 switch (r_type)
2390 {
31db78f6
AK		 2391 case R_390_PLTOFF16:
2392 case R_390_PLTOFF32:
2393 relocation -= htab->elf.sgot->output_section->vma;
2394 break;
470b557a
AK		 2395 case R_390_GOTPLT12:
2396 case R_390_GOTPLT16:
2397 case R_390_GOTPLT20:
2398 case R_390_GOTPLT32:
2399 case R_390_GOTPLTENT:
2400 case R_390_GOT12:
2401 case R_390_GOT16:
2402 case R_390_GOT20:
2403 case R_390_GOT32:
2404 case R_390_GOTENT:
2405 {
2406 /* Write the PLT slot address into the GOT slot. */
2407 bfd_put_32 (output_bfd, relocation,
2408 htab->elf.sgot->contents +
2409 local_got_offsets[r_symndx]);
2410 relocation = (local_got_offsets[r_symndx] +
2411 htab->elf.sgot->output_offset);
2412
2413 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2414 relocation += htab->elf.sgot->output_section->vma;
2415 break;
2416 }
2417 default:
2418 break;
2419 }
2420 /* The output section is needed later in
2421 finish_dynamic_section when creating the dynamic
2422 relocation. */
2423 local_plt[r_symndx].sec = sec;
2424 goto do_relocation;
2425 }
2426 else
2427 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2428 }
2429 else
2430 {
560e09e9 2431 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2432 bfd_boolean ignored ATTRIBUTE_UNUSED;
ec338859 2433
b2a8e766
AM		 2434 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2435 r_symndx, symtab_hdr, sym_hashes,
2436 h, sec, relocation,
62d887d4 2437 unresolved_reloc, warned, ignored);
a85d7ed0 2438 }
ec338859 2439
dbaa2011 2440 if (sec != NULL && discarded_section (sec))
e4067dbb 2441 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2442 rel, 1, relend, howto, 0, contents);
ab96bf03 2443
0e1862bb 2444 if (bfd_link_relocatable (info))
ab96bf03
AM		 2445 continue;
2446
a85d7ed0
NC		 2447 switch (r_type)
2448 {
5236c819
MS		 2449 case R_390_GOTPLT12:
2450 case R_390_GOTPLT16:
bd1ea41b 2451 case R_390_GOTPLT20:
5236c819
MS		 2452 case R_390_GOTPLT32:
2453 case R_390_GOTPLTENT:
2454 /* There are three cases for a GOTPLT relocation. 1) The
2455 relocation is against the jump slot entry of a plt that
2456 will get emitted to the output file. 2) The relocation
2457 is against the jump slot of a plt entry that has been
2458 removed. elf_s390_adjust_gotplt has created a GOT entry
2459 as replacement. 3) The relocation is against a local symbol.
2460 Cases 2) and 3) are the same as the GOT relocation code
2461 so we just have to test for case 1 and fall through for
2462 the other two. */
2463 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2464 {
2465 bfd_vma plt_index;
2466
470b557a
AK		 2467 if (s390_is_ifunc_symbol_p (h))
2468 {
2469 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2470 relocation = (plt_index * GOT_ENTRY_SIZE +
2471 htab->elf.igotplt->output_offset);
2472 if (r_type == R_390_GOTPLTENT)
2473 relocation += htab->elf.igotplt->output_section->vma;
2474 }
2475 else
2476 {
2477 /* Calc. index no.
2478 Current offset - size first entry / entry size. */
2479 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2480 PLT_ENTRY_SIZE;
2481
2482 /* Offset in GOT is PLT index plus GOT headers(3)
2483 times 4, addr & GOT addr. */
2484 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2485 if (r_type == R_390_GOTPLTENT)
2486 relocation += htab->elf.sgot->output_section->vma;
2487 }
5236c819
MS		 2488 unresolved_reloc = FALSE;
2489
5236c819
MS		 2490 }
2491 /* Fall through. */
2492
26e41594
AM		 2493 case R_390_GOT12:
2494 case R_390_GOT16:
bd1ea41b 2495 case R_390_GOT20:
26e41594 2496 case R_390_GOT32:
befc3abb 2497 case R_390_GOTENT:
26e41594
AM		 2498 /* Relocation is to the entry for this symbol in the global
2499 offset table. */
470b557a 2500 if (base_got == NULL)
0451c93c 2501 abort ();
ec338859 2502
26e41594
AM		 2503 if (h != NULL)
2504 {
b34976b6 2505 bfd_boolean dyn;
ec338859 2506
26e41594 2507 off = h->got.offset;
0451c93c 2508 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2509
2510 if (s390_is_ifunc_symbol_p (h))
2511 {
2512 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2513 if (off == (bfd_vma)-1)
2514 {
2515 /* No explicit GOT usage so redirect to the
2516 got.iplt slot. */
2517 base_got = htab->elf.igotplt;
2518 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2519 }
2520 else
2521 {
2522 /* Explicit GOT slots must contain the address
2523 of the PLT slot. This will be handled in
2524 finish_dynamic_symbol. */
2525 }
2526 }
0e1862bb
L		 2527 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2528 bfd_link_pic (info),
2529 h)
2530 || (bfd_link_pic (info)
470b557a
AK		 2531 && SYMBOL_REFERENCES_LOCAL (info, h))
2532 || (ELF_ST_VISIBILITY (h->other)
2533 && h->root.type == bfd_link_hash_undefweak))
2534
26e41594
AM		 2535 {
2536 /* This is actually a static link, or it is a
2537 -Bsymbolic link and the symbol is defined
2538 locally, or the symbol was forced to be local
2539 because of a version file. We must initialize
2540 this entry in the global offset table. Since the
2541 offset must always be a multiple of 2, we use the
2542 least significant bit to record whether we have
2543 initialized it already.
2544
2545 When doing a dynamic link, we create a .rel.got
2546 relocation entry to initialize the value. This
2547 is done in the finish_dynamic_symbol routine. */
2548 if ((off & 1) != 0)
2549 off &= ~1;
2550 else
2551 {
a85d7ed0 2552 bfd_put_32 (output_bfd, relocation,
470b557a 2553 base_got->contents + off);
26e41594
AM		 2554 h->got.offset |= 1;
2555 }
a63cc5f7
AK		 2556
2557 if ((h->def_regular
0e1862bb 2558 && bfd_link_pic (info)
a63cc5f7
AK		 2559 && SYMBOL_REFERENCES_LOCAL (info, h))
2560 /* lrl rx,sym@GOTENT -> larl rx, sym */
2561 && ((r_type == R_390_GOTENT
2562 && (bfd_get_16 (input_bfd,
2563 contents + rel->r_offset - 2)
2564 & 0xff0f) == 0xc40d)
2565 /* ly rx, sym@GOT(r12) -> larl rx, sym */
2566 || (r_type == R_390_GOT20
2567 && (bfd_get_32 (input_bfd,
2568 contents + rel->r_offset - 2)
2569 & 0xff00f000) == 0xe300c000
2570 && bfd_get_8 (input_bfd,
2571 contents + rel->r_offset + 3) == 0x58)))
2572 {
2573 unsigned short new_insn =
2574 (0xc000 | (bfd_get_8 (input_bfd,
2575 contents + rel->r_offset - 1) & 0xf0));
2576 bfd_put_16 (output_bfd, new_insn,
2577 contents + rel->r_offset - 2);
2578 r_type = R_390_PC32DBL;
2579 rel->r_addend = 2;
2580 howto = elf_howto_table + r_type;
2581 relocation = h->root.u.def.value
2582 + h->root.u.def.section->output_section->vma
2583 + h->root.u.def.section->output_offset;
2584 goto do_relocation;
2585 }
26e41594 2586 }
0451c93c 2587 else
b34976b6 2588 unresolved_reloc = FALSE;
26e41594
AM		 2589 }
2590 else
2591 {
0451c93c
MS		 2592 if (local_got_offsets == NULL)
2593 abort ();
a85d7ed0 2594
26e41594 2595 off = local_got_offsets[r_symndx];
a85d7ed0 2596
26e41594
AM		 2597 /* The offset must always be a multiple of 4. We use
2598 the least significant bit to record whether we have
2599 already generated the necessary reloc. */
2600 if ((off & 1) != 0)
2601 off &= ~1;
2602 else
2603 {
2604 bfd_put_32 (output_bfd, relocation,
f41345a7 2605 htab->elf.sgot->contents + off);
a85d7ed0 2606
0e1862bb 2607 if (bfd_link_pic (info))
26e41594
AM		 2608 {
2609 asection *srelgot;
2610 Elf_Internal_Rela outrel;
947216bf 2611 bfd_byte *loc;
a85d7ed0 2612
f41345a7 2613 srelgot = htab->elf.srelgot;
0451c93c
MS		 2614 if (srelgot == NULL)
2615 abort ();
a85d7ed0 2616
f41345a7
AK		 2617 outrel.r_offset = (htab->elf.sgot->output_section->vma
2618 + htab->elf.sgot->output_offset
26e41594
AM		 2619 + off);
2620 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2621 outrel.r_addend = relocation;
947216bf
AM		 2622 loc = srelgot->contents;
2623 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
26e41594
AM		 2624 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2625 }
a85d7ed0 2626
26e41594
AM		 2627 local_got_offsets[r_symndx] |= 1;
2628 }
2629 }
a85d7ed0 2630
0451c93c
MS		 2631 if (off >= (bfd_vma) -2)
2632 abort ();
a85d7ed0 2633
470b557a 2634 relocation = base_got->output_offset + off;
befc3abb 2635
ae9a127f
NC		 2636 /* For @GOTENT the relocation is against the offset between
2637 the instruction and the symbols entry in the GOT and not
2638 between the start of the GOT and the symbols entry. We
2639 add the vma of the GOT to get the correct value. */
5236c819
MS		 2640 if ( r_type == R_390_GOTENT
2641 || r_type == R_390_GOTPLTENT)
470b557a 2642 relocation += base_got->output_section->vma;
befc3abb 2643
26e41594 2644 break;
dc810e39 2645
5236c819 2646 case R_390_GOTOFF16:
26e41594
AM		 2647 case R_390_GOTOFF32:
2648 /* Relocation is relative to the start of the global offset
2649 table. */
2650
01a53584
AK		 2651 if (h != NULL
2652 && s390_is_ifunc_symbol_p (h)
2653 && h->def_regular
2654 && !bfd_link_executable (info))
2655 {
2656 relocation = (htab->elf.iplt->output_section->vma
2657 + htab->elf.iplt->output_offset
2658 + h->plt.offset
2659 - htab->elf.sgot->output_section->vma);
2660 goto do_relocation;
2661 }
2662
26e41594
AM		 2663 /* Note that sgot->output_offset is not involved in this
2664 calculation. We always want the start of .got. If we
2665 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2666 permitted by the ABI, we might have to change this
2667 calculation. */
f41345a7 2668 relocation -= htab->elf.sgot->output_section->vma;
26e41594
AM		 2669 break;
2670
2671 case R_390_GOTPC:
befc3abb 2672 case R_390_GOTPCDBL:
26e41594 2673 /* Use global offset table as symbol value. */
f41345a7 2674 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2675 unresolved_reloc = FALSE;
26e41594 2676 break;
a85d7ed0 2677
fb798c50 2678 case R_390_PLT12DBL:
26e41594 2679 case R_390_PLT16DBL:
fb798c50 2680 case R_390_PLT24DBL:
26e41594
AM		 2681 case R_390_PLT32DBL:
2682 case R_390_PLT32:
2683 /* Relocation is to the entry for this symbol in the
2684 procedure linkage table. */
a85d7ed0 2685
26e41594
AM		 2686 /* Resolve a PLT32 reloc against a local symbol directly,
2687 without using the procedure linkage table. */
2688 if (h == NULL)
2689 break;
a85d7ed0 2690
26e41594 2691 if (h->plt.offset == (bfd_vma) -1
470b557a 2692 || (htab->elf.splt == NULL && htab->elf.iplt == NULL))
26e41594
AM		 2693 {
2694 /* We didn't make a PLT entry for this symbol. This
2695 happens when statically linking PIC code, or when
2696 using -Bsymbolic. */
2697 break;
2698 }
2699
470b557a
AK		 2700 if (s390_is_ifunc_symbol_p (h))
2701 relocation = (htab->elf.iplt->output_section->vma
2702 + htab->elf.iplt->output_offset
2703 + h->plt.offset);
2704 else
2705 relocation = (htab->elf.splt->output_section->vma
2706 + htab->elf.splt->output_offset
2707 + h->plt.offset);
b34976b6 2708 unresolved_reloc = FALSE;
26e41594 2709 break;
a85d7ed0 2710
5236c819
MS		 2711 case R_390_PLTOFF16:
2712 case R_390_PLTOFF32:
26e41594
AM		 2713 /* Relocation is to the entry for this symbol in the
2714 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2715
2716 /* For local symbols or if we didn't make a PLT entry for
2717 this symbol resolve the symbol directly. */
31db78f6 2718 if (h == NULL
5236c819 2719 || h->plt.offset == (bfd_vma) -1
31db78f6 2720 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2721 {
f41345a7 2722 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS		 2723 break;
2724 }
2725
470b557a
AK		 2726 if (s390_is_ifunc_symbol_p (h))
2727 relocation = (htab->elf.iplt->output_section->vma
2728 + htab->elf.iplt->output_offset
2729 + h->plt.offset
2730 - htab->elf.sgot->output_section->vma);
2731 else
2732 relocation = (htab->elf.splt->output_section->vma
2733 + htab->elf.splt->output_offset
2734 + h->plt.offset
2735 - htab->elf.sgot->output_section->vma);
5236c819 2736 unresolved_reloc = FALSE;
26e41594
AM		 2737 break;
2738
2739 case R_390_8:
2740 case R_390_16:
2741 case R_390_32:
2742 case R_390_PC16:
fb798c50 2743 case R_390_PC12DBL:
26e41594 2744 case R_390_PC16DBL:
fb798c50 2745 case R_390_PC24DBL:
26e41594
AM		 2746 case R_390_PC32DBL:
2747 case R_390_PC32:
470b557a
AK		 2748 if (h != NULL
2749 && s390_is_ifunc_symbol_p (h)
2750 && h->def_regular)
2751 {
0e1862bb 2752 if (!bfd_link_pic (info) || !h->non_got_ref)
470b557a
AK		 2753 {
2754 /* For a non-shared object STT_GNU_IFUNC symbol must
2755 go through PLT. */
2756 relocation = (htab->elf.iplt->output_section->vma
2757 + htab->elf.iplt->output_offset
2758 + h ->plt.offset);
2759 goto do_relocation;
2760 }
2761 else
2762 {
2763 /* For shared objects a runtime relocation is needed. */
2764
2765 Elf_Internal_Rela outrel;
2766 asection *sreloc;
2767
2768 /* Need a dynamic relocation to get the real function
2769 address. */
2770 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2771 info,
2772 input_section,
2773 rel->r_offset);
2774 if (outrel.r_offset == (bfd_vma) -1
2775 || outrel.r_offset == (bfd_vma) -2)
2776 abort ();
2777
2778 outrel.r_offset += (input_section->output_section->vma
2779 + input_section->output_offset);
2780
2781 if (h->dynindx == -1
2782 || h->forced_local
0e1862bb 2783 || bfd_link_executable (info))
470b557a
AK		 2784 {
2785 /* This symbol is resolved locally. */
2786 outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
2787 outrel.r_addend = (h->root.u.def.value
2788 + h->root.u.def.section->output_section->vma
2789 + h->root.u.def.section->output_offset);
2790 }
2791 else
2792 {
2793 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2794 outrel.r_addend = 0;
2795 }
2796
2797 sreloc = htab->elf.irelifunc;
2798 elf_append_rela (output_bfd, sreloc, &outrel);
2799
2800 /* If this reloc is against an external symbol, we
2801 do not want to fiddle with the addend. Otherwise,
2802 we need to include the symbol value so that it
2803 becomes an addend for the dynamic reloc. For an
2804 internal symbol, we have updated addend. */
2805 continue;
2806 }
2807 }
2808
b1e24c02 2809 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2810 break;
2811
0e1862bb 2812 if ((bfd_link_pic (info)
82058a73
MS		 2813 && (h == NULL
2814 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2815 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2816 && ((r_type != R_390_PC16
fb798c50 2817 && r_type != R_390_PC12DBL
0451c93c 2818 && r_type != R_390_PC16DBL
fb798c50 2819 && r_type != R_390_PC24DBL
befc3abb 2820 && r_type != R_390_PC32DBL
0451c93c 2821 && r_type != R_390_PC32)
8c21ca21 2822 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810 2823 || (ELIMINATE_COPY_RELOCS
0e1862bb 2824 && !bfd_link_pic (info)
0451c93c
MS		 2825 && h != NULL
2826 && h->dynindx != -1
f5385ebf
AM		 2827 && !h->non_got_ref
2828 && ((h->def_dynamic
2829 && !h->def_regular)
0451c93c
MS		 2830 || h->root.type == bfd_link_hash_undefweak
2831 || h->root.type == bfd_link_hash_undefined)))
26e41594
AM		 2832 {
2833 Elf_Internal_Rela outrel;
2834 bfd_boolean skip, relocate;
0451c93c 2835 asection *sreloc;
947216bf 2836 bfd_byte *loc;
ec338859 2837
0451c93c
MS		 2838 /* When generating a shared object, these relocations
2839 are copied into the output file to be resolved at run
2840 time. */
ec338859 2841
26e41594
AM		 2842 skip = FALSE;
2843 relocate = FALSE;
ec338859 2844
c629eae0
JJ		 2845 outrel.r_offset =
2846 _bfd_elf_section_offset (output_bfd, info, input_section,
2847 rel->r_offset);
2848 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2849 skip = TRUE;
0bb2d96a 2850 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2851 skip = TRUE, relocate = TRUE;
26e41594
AM		 2852 outrel.r_offset += (input_section->output_section->vma
2853 + input_section->output_offset);
ec338859 2854
26e41594 2855 if (skip)
0bb2d96a 2856 memset (&outrel, 0, sizeof outrel);
26e41594 2857 else if (h != NULL
0451c93c
MS		 2858 && h->dynindx != -1
2859 && (r_type == R_390_PC16
fb798c50 2860 || r_type == R_390_PC12DBL
0451c93c 2861 || r_type == R_390_PC16DBL
fb798c50 2862 || r_type == R_390_PC24DBL
befc3abb 2863 || r_type == R_390_PC32DBL
0451c93c 2864 || r_type == R_390_PC32
0e1862bb 2865 || !bfd_link_pic (info)
8c21ca21 2866 || !SYMBOLIC_BIND (info, h)
f5385ebf 2867 || !h->def_regular))
26e41594
AM		 2868 {
2869 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
27018c3f 2870 outrel.r_addend = rel->r_addend;
26e41594
AM		 2871 }
2872 else
2873 {
0451c93c 2874 /* This symbol is local, or marked to become local. */
90ced0dd 2875 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2876 if (r_type == R_390_32)
2877 {
2878 relocate = TRUE;
2879 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2880 }
2881 else
2882 {
2883 long sindx;
2884
90ced0dd 2885 if (bfd_is_abs_section (sec))
b5727d75
MS		 2886 sindx = 0;
2887 else if (sec == NULL || sec->owner == NULL)
2888 {
2889 bfd_set_error(bfd_error_bad_value);
2890 return FALSE;
2891 }
2892 else
2893 {
2894 asection *osec;
2895
2896 osec = sec->output_section;
2897 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2898 if (sindx == 0)
2899 {
2900 osec = htab->elf.text_index_section;
2901 sindx = elf_section_data (osec)->dynindx;
2902 }
2903 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2904
2905 /* We are turning this relocation into one
2906 against a section symbol, so subtract out
2907 the output section's address but not the
2908 offset of the input section in the output
2909 section. */
90ced0dd 2910 outrel.r_addend -= osec->vma;
b5727d75
MS		 2911 }
2912 outrel.r_info = ELF32_R_INFO (sindx, r_type);
b5727d75 2913 }
26e41594 2914 }
ec338859 2915
0451c93c
MS		 2916 sreloc = elf_section_data (input_section)->sreloc;
2917 if (sreloc == NULL)
2918 abort ();
ec338859 2919
947216bf
AM		 2920 loc = sreloc->contents;
2921 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 2922 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
ec338859 2923
26e41594
AM		 2924 /* If this reloc is against an external symbol, we do
2925 not want to fiddle with the addend. Otherwise, we
2926 need to include the symbol value so that it becomes
2927 an addend for the dynamic reloc. */
2928 if (! relocate)
2929 continue;
2930 }
0451c93c 2931 break;
ec338859 2932
69fc87f1
MS		 2933 /* Relocations for tls literal pool entries. */
2934 case R_390_TLS_IE32:
0e1862bb 2935 if (bfd_link_pic (info))
69fc87f1
MS		 2936 {
2937 Elf_Internal_Rela outrel;
2938 asection *sreloc;
2939 bfd_byte *loc;
2940
2941 outrel.r_offset = rel->r_offset
2942 + input_section->output_section->vma
2943 + input_section->output_offset;
2944 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2945 sreloc = elf_section_data (input_section)->sreloc;
2946 if (sreloc == NULL)
2947 abort ();
2948 loc = sreloc->contents;
2949 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2950 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2951 }
ae9a127f 2952 /* Fall through. */
69fc87f1
MS		 2953
2954 case R_390_TLS_GD32:
2955 case R_390_TLS_GOTIE32:
2956 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2957 tls_type = GOT_UNKNOWN;
2958 if (h == NULL && local_got_offsets)
2959 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2960 else if (h != NULL)
2961 {
2962 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb
L		 2963 if (!bfd_link_pic (info)
2964 && h->dynindx == -1
2965 && tls_type >= GOT_TLS_IE)
69fc87f1
MS		 2966 r_type = R_390_TLS_LE32;
2967 }
2968 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2969 r_type = R_390_TLS_IE32;
2970
2971 if (r_type == R_390_TLS_LE32)
2972 {
2973 /* This relocation gets optimized away by the local exec
2974 access optimization. */
2975 BFD_ASSERT (! unresolved_reloc);
2976 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2977 contents + rel->r_offset);
2978 continue;
2979 }
2980
f41345a7 2981 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2982 abort ();
2983
2984 if (h != NULL)
2985 off = h->got.offset;
2986 else
2987 {
2988 if (local_got_offsets == NULL)
2989 abort ();
2990
2991 off = local_got_offsets[r_symndx];
2992 }
2993
2994 emit_tls_relocs:
2995
2996 if ((off & 1) != 0)
2997 off &= ~1;
26e41594 2998 else
69fc87f1
MS		 2999 {
3000 Elf_Internal_Rela outrel;
3001 bfd_byte *loc;
3002 int dr_type, indx;
3003
f41345a7 3004 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 3005 abort ();
3006
f41345a7
AK		 3007 outrel.r_offset = (htab->elf.sgot->output_section->vma
3008 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 3009
3010 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3011 if (r_type == R_390_TLS_GD32)
3012 dr_type = R_390_TLS_DTPMOD;
3013 else
3014 dr_type = R_390_TLS_TPOFF;
3015 if (dr_type == R_390_TLS_TPOFF && indx == 0)
3016 outrel.r_addend = relocation - dtpoff_base (info);
3017 else
3018 outrel.r_addend = 0;
3019 outrel.r_info = ELF32_R_INFO (indx, dr_type);
f41345a7
AK		 3020 loc = htab->elf.srelgot->contents;
3021 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3022 * sizeof (Elf32_External_Rela);
3023 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3024
3025 if (r_type == R_390_TLS_GD32)
3026 {
3027 if (indx == 0)
3028 {
26e41594 3029 BFD_ASSERT (! unresolved_reloc);
69fc87f1
MS		 3030 bfd_put_32 (output_bfd,
3031 relocation - dtpoff_base (info),
f41345a7 3032 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3033 }
3034 else
3035 {
3036 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
3037 outrel.r_offset += GOT_ENTRY_SIZE;
3038 outrel.r_addend = 0;
f41345a7 3039 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 3040 loc += sizeof (Elf32_External_Rela);
3041 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3042 }
3043 }
3044
3045 if (h != NULL)
3046 h->got.offset |= 1;
3047 else
3048 local_got_offsets[r_symndx] |= 1;
3049 }
3050
3051 if (off >= (bfd_vma) -2)
3052 abort ();
3053 if (r_type == ELF32_R_TYPE (rel->r_info))
3054 {
f41345a7 3055 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3056 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
f41345a7 3057 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3058 unresolved_reloc = FALSE;
3059 }
3060 else
3061 {
f41345a7 3062 bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 3063 contents + rel->r_offset);
3064 continue;
3065 }
3066 break;
3067
3068 case R_390_TLS_GOTIE12:
bd1ea41b 3069 case R_390_TLS_GOTIE20:
69fc87f1
MS		 3070 case R_390_TLS_IEENT:
3071 if (h == NULL)
3072 {
3073 if (local_got_offsets == NULL)
3074 abort();
3075 off = local_got_offsets[r_symndx];
0e1862bb 3076 if (bfd_link_pic (info))
69fc87f1
MS		 3077 goto emit_tls_relocs;
3078 }
3079 else
3080 {
3081 off = h->got.offset;
3082 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb
L		 3083 if (bfd_link_pic (info)
3084 || h->dynindx != -1
3085 || tls_type < GOT_TLS_IE)
69fc87f1
MS		 3086 goto emit_tls_relocs;
3087 }
3088
f41345a7 3089 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3090 abort ();
3091
3092 BFD_ASSERT (! unresolved_reloc);
3093 bfd_put_32 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 3094 htab->elf.sgot->contents + off);
3095 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3096 if (r_type == R_390_TLS_IEENT)
f41345a7 3097 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3098 unresolved_reloc = FALSE;
3099 break;
3100
3101 case R_390_TLS_LDM32:
0e1862bb 3102 if (! bfd_link_pic (info))
69fc87f1
MS		 3103 /* The literal pool entry this relocation refers to gets ignored
3104 by the optimized code of the local exec model. Do nothing
3105 and the value will turn out zero. */
3106 continue;
3107
f41345a7 3108 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3109 abort ();
3110
3111 off = htab->tls_ldm_got.offset;
3112 if (off & 1)
3113 off &= ~1;
3114 else
3115 {
3116 Elf_Internal_Rela outrel;
3117 bfd_byte *loc;
3118
f41345a7 3119 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 3120 abort ();
3121
f41345a7
AK		 3122 outrel.r_offset = (htab->elf.sgot->output_section->vma
3123 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 3124
3125 bfd_put_32 (output_bfd, 0,
f41345a7 3126 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3127 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
3128 outrel.r_addend = 0;
f41345a7
AK		 3129 loc = htab->elf.srelgot->contents;
3130 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3131 * sizeof (Elf32_External_Rela);
3132 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3133 htab->tls_ldm_got.offset |= 1;
3134 }
f41345a7 3135 relocation = htab->elf.sgot->output_offset + off;
26e41594 3136 unresolved_reloc = FALSE;
69fc87f1
MS		 3137 break;
3138
3139 case R_390_TLS_LE32:
3cbc1e5e 3140 if (bfd_link_dll (info))
69fc87f1
MS		 3141 {
3142 /* Linking a shared library with non-fpic code requires
3143 a R_390_TLS_TPOFF relocation. */
3144 Elf_Internal_Rela outrel;
3145 asection *sreloc;
3146 bfd_byte *loc;
3147 int indx;
3148
3149 outrel.r_offset = rel->r_offset
3150 + input_section->output_section->vma
3151 + input_section->output_offset;
3152 if (h != NULL && h->dynindx != -1)
3153 indx = h->dynindx;
3154 else
3155 indx = 0;
3156 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
3157 if (indx == 0)
3158 outrel.r_addend = relocation - dtpoff_base (info);
3159 else
3160 outrel.r_addend = 0;
3161 sreloc = elf_section_data (input_section)->sreloc;
3162 if (sreloc == NULL)
3163 abort ();
3164 loc = sreloc->contents;
3165 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3166 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3167 }
3168 else
3169 {
3170 BFD_ASSERT (! unresolved_reloc);
3171 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3172 contents + rel->r_offset);
3173 }
3174 continue;
3175
3176 case R_390_TLS_LDO32:
0e1862bb 3177 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 3178 relocation -= dtpoff_base (info);
3179 else
3180 /* When converting LDO to LE, we must negate. */
3181 relocation = -tpoff (info, relocation);
3182 break;
3183
3184 /* Relocations for tls instructions. */
3185 case R_390_TLS_LOAD:
3186 case R_390_TLS_GDCALL:
3187 case R_390_TLS_LDCALL:
3188 tls_type = GOT_UNKNOWN;
3189 if (h == NULL && local_got_offsets)
3190 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3191 else if (h != NULL)
3192 tls_type = elf_s390_hash_entry(h)->tls_type;
3193
3194 if (tls_type == GOT_TLS_GD)
3195 continue;
3196
3197 if (r_type == R_390_TLS_LOAD)
3198 {
0e1862bb 3199 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3200 {
3201 /* IE->LE transition. Four valid cases:
3202 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
3203 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
3204 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
3205 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3206 unsigned int insn, ry;
3207
3208 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3209 ry = 0;
3210 if ((insn & 0xff00f000) == 0x58000000)
3211 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
3212 ry = (insn & 0x000f0000);
3213 else if ((insn & 0xff0f0000) == 0x58000000)
3214 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
3215 ry = (insn & 0x0000f000) << 4;
3216 else if ((insn & 0xff00f000) == 0x5800c000)
3217 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
3218 ry = (insn & 0x000f0000);
3219 else if ((insn & 0xff0f0000) == 0x580c0000)
3220 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3221 ry = (insn & 0x0000f000) << 4;
3222 else
3223 invalid_tls_insn (input_bfd, input_section, rel);
3224 insn = 0x18000700 | (insn & 0x00f00000) | ry;
3225 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3226 }
3227 }
3228 else if (r_type == R_390_TLS_GDCALL)
3229 {
3230 unsigned int insn;
3231
3232 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3233 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 3234 (insn & 0xffff0000) != 0xc0e50000 &&
3235 (insn & 0xff000000) != 0x0d000000)
69fc87f1 3236 invalid_tls_insn (input_bfd, input_section, rel);
0e1862bb 3237 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
77df2968 3238 {
d0ddfe27
AK		 3239 if ((insn & 0xff000000) == 0x0d000000)
3240 {
3241 /* GD->LE transition.
3242 basr rx, ry -> nopr r7 */
3243 insn = 0x07070000 | (insn & 0xffff);
3244 }
3245 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 3246 {
3247 /* GD->LE transition.
3248 bas %r14,0(%rx,%r13) -> bc 0,0 */
3249 insn = 0x47000000;
3250 }
3251 else
3252 {
3253 /* GD->LE transition.
d0ddfe27 3254 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 3255 insn = 0xc0040000;
3256 bfd_put_16 (output_bfd, 0x0000,
3257 contents + rel->r_offset + 4);
3258 }
3259 }
69fc87f1 3260 else
77df2968 3261 {
d0ddfe27
AK		 3262 /* If basr is used in the pic case to invoke
3263 _tls_get_offset, something went wrong before. */
3264 if ((insn & 0xff000000) == 0x0d000000)
3265 invalid_tls_insn (input_bfd, input_section, rel);
3266
77df2968
MS		 3267 if ((insn & 0xff000000) == 0x4d000000)
3268 {
3269 /* GD->IE transition.
3270 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3271 insn = 0x5822c000;
3272 }
3273 else
3274 {
3275 /* GD->IE transition.
3276 brasl %r14,__tls_get_addr@plt ->
3277 l %r2,0(%r2,%r12) ; bcr 0,0 */
3278 insn = 0x5822c000;
3279 bfd_put_16 (output_bfd, 0x0700,
3280 contents + rel->r_offset + 4);
3281 }
3282 }
69fc87f1
MS		 3283 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3284 }
3285 else if (r_type == R_390_TLS_LDCALL)
3286 {
0e1862bb 3287 if (!bfd_link_pic (info))
69fc87f1
MS		 3288 {
3289 unsigned int insn;
3290
3291 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3292 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 3293 (insn & 0xffff0000) != 0xc0e50000 &&
3294 (insn & 0xff000000) != 0x0d000000)
69fc87f1 3295 invalid_tls_insn (input_bfd, input_section, rel);
d0ddfe27
AK		 3296
3297 if ((insn & 0xff000000) == 0x0d000000)
3298 {
3299 /* LD->LE transition.
3300 basr rx, ry -> nopr r7 */
3301 insn = 0x07070000 | (insn & 0xffff);
3302 }
3303 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 3304 {
3305 /* LD->LE transition.
3306 bas %r14,0(%rx,%r13) -> bc 0,0 */
3307 insn = 0x47000000;
3308 }
3309 else
3310 {
3311 /* LD->LE transition.
d0ddfe27 3312 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 3313 insn = 0xc0040000;
3314 bfd_put_16 (output_bfd, 0x0000,
3315 contents + rel->r_offset + 4);
3316 }
69fc87f1
MS		 3317 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3318 }
3319 }
3320 continue;
3321
0451c93c
MS		 3322 default:
3323 break;
3324 }
ec338859 3325
239e1f3a
AM		 3326 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3327 because such sections are not SEC_ALLOC and thus ld.so will
3328 not process them. */
0451c93c 3329 if (unresolved_reloc
239e1f3a 3330 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3331 && h->def_dynamic)
3332 && _bfd_elf_section_offset (output_bfd, info, input_section,
3333 rel->r_offset) != (bfd_vma) -1)
0451c93c 3334 (*_bfd_error_handler)
843fe662 3335 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3336 input_bfd,
3337 input_section,
0451c93c 3338 (long) rel->r_offset,
843fe662 3339 howto->name,
0451c93c 3340 h->root.root.string);
ec338859 3341
470b557a
AK		 3342 do_relocation:
3343
fb798c50
AK		 3344 /* When applying a 24 bit reloc we need to start one byte
3345 earlier. Otherwise the 32 bit get/put bfd operations might
3346 access a byte after the actual section. */
3347 if (r_type == R_390_PC24DBL
3348 || r_type == R_390_PLT24DBL)
3349 rel->r_offset--;
3350
bd1ea41b
MS		 3351 if (r_type == R_390_20
3352 || r_type == R_390_GOT20
3353 || r_type == R_390_GOTPLT20
3354 || r_type == R_390_TLS_GOTIE20)
3355 {
3356 relocation += rel->r_addend;
3357 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3358 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3359 contents, rel->r_offset,
3360 relocation, 0);
3361 }
3362 else
3363 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3364 contents, rel->r_offset,
3365 relocation, rel->r_addend);
ec338859 3366
a85d7ed0
NC		 3367 if (r != bfd_reloc_ok)
3368 {
0451c93c 3369 const char *name;
ec338859 3370
0451c93c
MS		 3371 if (h != NULL)
3372 name = h->root.root.string;
3373 else
a85d7ed0 3374 {
0451c93c
MS		 3375 name = bfd_elf_string_from_elf_section (input_bfd,
3376 symtab_hdr->sh_link,
3377 sym->st_name);
3378 if (name == NULL)
b34976b6 3379 return FALSE;
0451c93c
MS		 3380 if (*name == '\0')
3381 name = bfd_section_name (input_bfd, sec);
3382 }
ec338859 3383
0451c93c
MS		 3384 if (r == bfd_reloc_overflow)
3385 {
ec338859 3386
0451c93c 3387 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 3388 (info, (h ? &h->root : NULL), name, howto->name,
3389 (bfd_vma) 0, input_bfd, input_section,
3390 rel->r_offset)))
b34976b6 3391 return FALSE;
0451c93c
MS		 3392 }
3393 else
3394 {
3395 (*_bfd_error_handler)
d003868e
AM		 3396 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3397 input_bfd, input_section,
0451c93c 3398 (long) rel->r_offset, name, (int) r);
b34976b6 3399 return FALSE;
a85d7ed0
NC		 3400 }
3401 }
3402 }
ec338859 3403
b34976b6 3404 return TRUE;
a85d7ed0
NC		 3405}
3406
470b557a
AK		 3407/* Generate the PLT slots together with the dynamic relocations needed
3408 for IFUNC symbols. */
3409
3410static void
3411elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3412 struct bfd_link_info *info,
3413 struct elf_link_hash_entry *h,
3414 struct elf_s390_link_hash_table *htab,
3415 bfd_vma iplt_offset,
3416 bfd_vma resolver_address)
3417{
3418 bfd_vma iplt_index;
3419 bfd_vma got_offset;
3420 bfd_vma igotiplt_offset;
3421 Elf_Internal_Rela rela;
3422 bfd_byte *loc;
3423 asection *plt, *gotplt, *relplt;
3424 bfd_vma relative_offset;
3425
3426 if (htab->elf.iplt == NULL
3427 || htab->elf.igotplt == NULL
3428 || htab->elf.irelplt == NULL)
3429 abort ();
3430
3431 gotplt = htab->elf.igotplt;
3432 relplt = htab->elf.irelplt;
3433
3434 /* Index of the PLT slot within iplt section. */
3435 iplt_index = iplt_offset / PLT_ENTRY_SIZE;
3436 plt = htab->elf.iplt;
3437 /* Offset into the igot.plt section. */
3438 igotiplt_offset = iplt_index * GOT_ENTRY_SIZE;
3439 /* Offset into the got section. */
3440 got_offset = igotiplt_offset + gotplt->output_offset;
3441
3442 /* S390 uses halfwords for relative branch calc! */
3443 relative_offset = - (plt->output_offset +
3444 (PLT_ENTRY_SIZE * iplt_index) + 18) / 2;
3445/* If offset is > 32768, branch to a previous branch
3446 390 can only handle +-64 K jumps. */
3447 if ( -32768 > (int) relative_offset )
3448 relative_offset
3449 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3450
3451 /* Fill in the entry in the procedure linkage table. */
0e1862bb 3452 if (!bfd_link_pic (info))
470b557a
AK		 3453 {
3454 memcpy (plt->contents + iplt_offset, elf_s390_plt_entry,
3455 PLT_ENTRY_SIZE);
3456
3457 /* Adjust jump to the first plt entry. */
3458 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3459 plt->contents + iplt_offset + 20);
3460
3461 /* Push the GOT offset field. */
3462 bfd_put_32 (output_bfd,
3463 (gotplt->output_section->vma
3464 + got_offset),
3465 plt->contents + iplt_offset + 24);
3466 }
3467 else if (got_offset < 4096)
3468 {
3469 /* The GOT offset is small enough to be used directly as
3470 displacement. */
3471 memcpy (plt->contents + iplt_offset,
3472 elf_s390_plt_pic12_entry,
3473 PLT_ENTRY_SIZE);
3474
3475 /* Put in the GOT offset as displacement value. The 0xc000
3476 value comes from the first word of the plt entry. Look
3477 at the elf_s390_plt_pic16_entry content. */
3478 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3479 plt->contents + iplt_offset + 2);
3480
3481 /* Adjust the jump to the first plt entry. */
3482 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3483 plt->contents + iplt_offset + 20);
3484 }
3485 else if (got_offset < 32768)
3486 {
3487 /* The GOT offset is too big for a displacement but small
3488 enough to be a signed 16 bit immediate value as it can be
3489 used in an lhi instruction. */
3490 memcpy (plt->contents + iplt_offset,
3491 elf_s390_plt_pic16_entry,
3492 PLT_ENTRY_SIZE);
3493
3494 /* Put in the GOT offset for the lhi instruction. */
3495 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3496 plt->contents + iplt_offset + 2);
3497
3498 /* Adjust the jump to the first plt entry. */
3499 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3500 plt->contents + iplt_offset + 20);
3501 }
3502 else
3503 {
3504 memcpy (plt->contents + iplt_offset,
3505 elf_s390_plt_pic_entry,
3506 PLT_ENTRY_SIZE);
3507
3508 /* Adjust the jump to the first plt entry. */
3509 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3510 plt->contents + iplt_offset + 20);
3511
3512 /* Push the GOT offset field. */
3513 bfd_put_32 (output_bfd, got_offset,
3514 plt->contents + iplt_offset + 24);
3515 }
3516 /* Insert offset into reloc. table here. */
3517 bfd_put_32 (output_bfd, relplt->output_offset +
3518 iplt_index * RELA_ENTRY_SIZE,
3519 plt->contents + iplt_offset + 28);
3520
3521 /* Fill in the entry in the global offset table.
3522 Points to instruction after GOT offset. */
3523 bfd_put_32 (output_bfd,
3524 (plt->output_section->vma
3525 + plt->output_offset
3526 + iplt_offset
3527 + 12),
3528 gotplt->contents + igotiplt_offset);
3529
3530 /* Fill in the entry in the .rela.plt section. */
3531 rela.r_offset = gotplt->output_section->vma + got_offset;
3532
3533 if (!h
3534 || h->dynindx == -1
0e1862bb 3535 || ((bfd_link_executable (info)
470b557a
AK		 3536 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3537 && h->def_regular))
3538 {
3539 /* The symbol can be locally resolved. */
3540 rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
3541 rela.r_addend = resolver_address;
3542 }
3543 else
3544 {
3545 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3546 rela.r_addend = 0;
3547 }
3548
3549 loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE;
3550 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3551}
3552
a85d7ed0
NC		 3553/* Finish up dynamic symbol handling. We set the contents of various
3554 dynamic sections here. */
3555
b34976b6 3556static bfd_boolean
2c3fc389
NC		 3557elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3558 struct bfd_link_info *info,
3559 struct elf_link_hash_entry *h,
3560 Elf_Internal_Sym *sym)
a85d7ed0 3561{
0451c93c 3562 struct elf_s390_link_hash_table *htab;
470b557a 3563 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
ec338859 3564
0451c93c 3565 htab = elf_s390_hash_table (info);
ec338859 3566
a85d7ed0
NC		 3567 if (h->plt.offset != (bfd_vma) -1)
3568 {
0451c93c
MS		 3569 bfd_vma plt_index;
3570 bfd_vma got_offset;
a85d7ed0 3571 Elf_Internal_Rela rela;
947216bf 3572 bfd_byte *loc;
a85d7ed0 3573 bfd_vma relative_offset;
ec338859 3574
a85d7ed0 3575 /* This symbol has an entry in the procedure linkage table. Set
26e41594 3576 it up. */
0a511368 3577 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
0451c93c 3578 {
0a511368
AK		 3579 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3580 htab, h->plt.offset,
3581 eh->ifunc_resolver_address +
3582 eh->ifunc_resolver_section->output_offset +
3583 eh->ifunc_resolver_section->output_section->vma);
3584 /* Do not return yet. Handling of explicit GOT slots of
3585 IFUNC symbols is below. */
0451c93c 3586 }
a85d7ed0 3587 else
0451c93c 3588 {
470b557a
AK		 3589 if (h->dynindx == -1
3590 || htab->elf.splt == NULL
3591 || htab->elf.sgotplt == NULL
3592 || htab->elf.srelplt == NULL)
3593 abort ();
9aa17453 3594
470b557a
AK		 3595 /* Calc. index no.
3596 Current offset - size first entry / entry size. */
3597 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9aa17453 3598
470b557a
AK		 3599 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3600 addr & GOT addr. */
3601 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3602
470b557a
AK		 3603 /* S390 uses halfwords for relative branch calc! */
3604 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3605 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3606 /* If offset is > 32768, branch to a previous branch
3607 390 can only handle +-64 K jumps. */
3608 if ( -32768 > (int) relative_offset )
3609 relative_offset
3610 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
ec338859 3611
470b557a 3612 /* Fill in the entry in the procedure linkage table. */
0e1862bb 3613 if (!bfd_link_pic (info))
470b557a
AK		 3614 {
3615 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry,
3616 PLT_ENTRY_SIZE);
3617
3618 /* Adjust jump to the first plt entry. */
3619 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3620 htab->elf.splt->contents + h->plt.offset + 20);
3621
3622 /* Push the GOT offset field. */
3623 bfd_put_32 (output_bfd,
3624 (htab->elf.sgotplt->output_section->vma
3625 + htab->elf.sgotplt->output_offset
3626 + got_offset),
3627 htab->elf.splt->contents + h->plt.offset + 24);
3628 }
3629 else if (got_offset < 4096)
3630 {
3631 /* The GOT offset is small enough to be used directly as
3632 displacement. */
3633 memcpy (htab->elf.splt->contents + h->plt.offset,
3634 elf_s390_plt_pic12_entry,
3635 PLT_ENTRY_SIZE);
3636
3637 /* Put in the GOT offset as displacement value. The 0xc000
3638 value comes from the first word of the plt entry. Look
3639 at the elf_s390_plt_pic16_entry content. */
3640 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3641 htab->elf.splt->contents + h->plt.offset + 2);
3642
3643 /* Adjust the jump to the first plt entry. */
3644 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3645 htab->elf.splt->contents + h->plt.offset + 20);
3646 }
3647 else if (got_offset < 32768)
3648 {
3649 /* The GOT offset is too big for a displacement but small
3650 enough to be a signed 16 bit immediate value as it can be
3651 used in an lhi instruction. */
3652 memcpy (htab->elf.splt->contents + h->plt.offset,
3653 elf_s390_plt_pic16_entry,
3654 PLT_ENTRY_SIZE);
3655
3656 /* Put in the GOT offset for the lhi instruction. */
3657 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3658 htab->elf.splt->contents + h->plt.offset + 2);
3659
3660 /* Adjust the jump to the first plt entry. */
3661 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3662 htab->elf.splt->contents + h->plt.offset + 20);
3663 }
3664 else
3665 {
3666 memcpy (htab->elf.splt->contents + h->plt.offset,
3667 elf_s390_plt_pic_entry,
3668 PLT_ENTRY_SIZE);
3669
3670 /* Adjust the jump to the first plt entry. */
3671 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3672 htab->elf.splt->contents + h->plt.offset + 20);
3673
3674 /* Push the GOT offset field. */
3675 bfd_put_32 (output_bfd, got_offset,
3676 htab->elf.splt->contents + h->plt.offset + 24);
3677 }
3678 /* Insert offset into reloc. table here. */
3679 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3680 htab->elf.splt->contents + h->plt.offset + 28);
3681
3682 /* Fill in the entry in the global offset table.
3683 Points to instruction after GOT offset. */
3684 bfd_put_32 (output_bfd,
3685 (htab->elf.splt->output_section->vma
3686 + htab->elf.splt->output_offset
3687 + h->plt.offset
3688 + 12),
3689 htab->elf.sgotplt->contents + got_offset);
3690
3691 /* Fill in the entry in the .rela.plt section. */
3692 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3693 + htab->elf.sgotplt->output_offset
3694 + got_offset);
3695 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3696 rela.r_addend = 0;
3697 loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3698 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3699
3700 if (!h->def_regular)
3701 {
3702 /* Mark the symbol as undefined, rather than as defined in
3703 the .plt section. Leave the value alone. This is a clue
3704 for the dynamic linker, to make function pointer
3705 comparisons work between an application and shared
3706 library. */
3707 sym->st_shndx = SHN_UNDEF;
3708 }
a85d7ed0
NC		 3709 }
3710 }
ec338859 3711
69fc87f1
MS		 3712 if (h->got.offset != (bfd_vma) -1
3713 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3714 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3715 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3716 {
a85d7ed0 3717 Elf_Internal_Rela rela;
947216bf 3718 bfd_byte *loc;
a85d7ed0
NC		 3719
3720 /* This symbol has an entry in the global offset table. Set it
26e41594 3721 up. */
a85d7ed0 3722
f41345a7 3723 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3724 abort ();
a85d7ed0 3725
f41345a7
AK		 3726 rela.r_offset = (htab->elf.sgot->output_section->vma
3727 + htab->elf.sgot->output_offset
dc810e39 3728 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0
NC		 3729
3730 /* If this is a static link, or it is a -Bsymbolic link and the
3731 symbol is defined locally or was forced to be local because
3732 of a version file, we just want to emit a RELATIVE reloc.
3733 The entry in the global offset table will already have been
3734 initialized in the relocate_section function. */
470b557a
AK		 3735 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3736 {
0e1862bb 3737 if (bfd_link_pic (info))
470b557a
AK		 3738 {
3739 /* An explicit GOT slot usage needs GLOB_DAT. If the
3740 symbol references local the implicit got.iplt slot
3741 will be used and the IRELATIVE reloc has been created
3742 above. */
3743 goto do_glob_dat;
3744 }
3745 else
3746 {
3747 /* For non-shared objects explicit GOT slots must be
3748 filled with the PLT slot address for pointer
3749 equality reasons. */
3750 bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma
3751 + htab->elf.iplt->output_offset
3752 + h->plt.offset),
3753 htab->elf.sgot->contents + h->got.offset);
3754 return TRUE;
3755 }
3756 }
0e1862bb 3757 else if (bfd_link_pic (info)
8c21ca21 3758 && SYMBOL_REFERENCES_LOCAL (info, h))
0451c93c 3759 {
470b557a
AK		 3760 /* If this is a static link, or it is a -Bsymbolic link and
3761 the symbol is defined locally or was forced to be local
3762 because of a version file, we just want to emit a
3763 RELATIVE reloc. The entry in the global offset table
3764 will already have been initialized in the
3765 relocate_section function. */
8c21ca21
AK		 3766 if (!h->def_regular)
3767 return FALSE;
0451c93c
MS		 3768 BFD_ASSERT((h->got.offset & 1) != 0);
3769 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3770 rela.r_addend = (h->root.u.def.value
26e41594
AM		 3771 + h->root.u.def.section->output_section->vma
3772 + h->root.u.def.section->output_offset);
3773 }
a85d7ed0
NC		 3774 else
3775 {
3776 BFD_ASSERT((h->got.offset & 1) == 0);
470b557a 3777 do_glob_dat:
f41345a7 3778 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3779 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
26e41594
AM		 3780 rela.r_addend = 0;
3781 }
a85d7ed0 3782
f41345a7
AK		 3783 loc = htab->elf.srelgot->contents;
3784 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3785 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3786 }
3787
f5385ebf 3788 if (h->needs_copy)
a85d7ed0 3789 {
a85d7ed0 3790 Elf_Internal_Rela rela;
947216bf 3791 bfd_byte *loc;
a85d7ed0
NC		 3792
3793 /* This symbols needs a copy reloc. Set it up. */
3794
0451c93c
MS		 3795 if (h->dynindx == -1
3796 || (h->root.type != bfd_link_hash_defined
3797 && h->root.type != bfd_link_hash_defweak)
3798 || htab->srelbss == NULL)
3799 abort ();
a85d7ed0
NC		 3800
3801 rela.r_offset = (h->root.u.def.value
3802 + h->root.u.def.section->output_section->vma
3803 + h->root.u.def.section->output_offset);
3804 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3805 rela.r_addend = 0;
947216bf
AM		 3806 loc = htab->srelbss->contents;
3807 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3808 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3809 }
3810
3811 /* Mark some specially defined symbols as absolute. */
9637f6ef 3812 if (h == htab->elf.hdynamic
22edb2f1
RS		 3813 || h == htab->elf.hgot
3814 || h == htab->elf.hplt)
a85d7ed0
NC		 3815 sym->st_shndx = SHN_ABS;
3816
b34976b6 3817 return TRUE;
a85d7ed0
NC		 3818}
3819
0451c93c
MS		 3820/* Used to decide how to sort relocs in an optimal manner for the
3821 dynamic linker, before writing them out. */
3822
3823static enum elf_reloc_type_class
7e612e98
AM		 3824elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3825 const asection *rel_sec ATTRIBUTE_UNUSED,
3826 const Elf_Internal_Rela *rela)
0451c93c 3827{
0f042c67
AK		 3828 bfd *abfd = info->output_bfd;
3829 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3830 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3831 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
3832 Elf_Internal_Sym sym;
3833
3834 if (htab->elf.dynsym == NULL
3835 || !bed->s->swap_symbol_in (abfd,
3836 (htab->elf.dynsym->contents
3837 + r_symndx * bed->s->sizeof_sym),
3838 0, &sym))
3839 abort ();
3840
3841 /* Check relocation against STT_GNU_IFUNC symbol. */
3842 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3843 return reloc_class_ifunc;
3844
0451c93c
MS		 3845 switch ((int) ELF32_R_TYPE (rela->r_info))
3846 {
3847 case R_390_RELATIVE:
3848 return reloc_class_relative;
3849 case R_390_JMP_SLOT:
3850 return reloc_class_plt;
3851 case R_390_COPY:
3852 return reloc_class_copy;
3853 default:
3854 return reloc_class_normal;
3855 }
3856}
3857
a85d7ed0
NC		 3858/* Finish up the dynamic sections. */
3859
b34976b6 3860static bfd_boolean
2c3fc389
NC		 3861elf_s390_finish_dynamic_sections (bfd *output_bfd,
3862 struct bfd_link_info *info)
a85d7ed0 3863{
0451c93c 3864 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3865 bfd *dynobj;
3866 asection *sdyn;
470b557a
AK		 3867 bfd *ibfd;
3868 unsigned int i;
a85d7ed0 3869
0451c93c
MS		 3870 htab = elf_s390_hash_table (info);
3871 dynobj = htab->elf.dynobj;
3d4d4302 3872 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3873
0451c93c 3874 if (htab->elf.dynamic_sections_created)
a85d7ed0 3875 {
a85d7ed0
NC		 3876 Elf32_External_Dyn *dyncon, *dynconend;
3877
f41345a7 3878 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3879 abort ();
a85d7ed0
NC		 3880
3881 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 3882 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3883 for (; dyncon < dynconend; dyncon++)
3884 {
3885 Elf_Internal_Dyn dyn;
a85d7ed0 3886 asection *s;
ec338859 3887
a85d7ed0 3888 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3889
a85d7ed0
NC		 3890 switch (dyn.d_tag)
3891 {
3892 default:
0451c93c 3893 continue;
ec338859 3894
a85d7ed0 3895 case DT_PLTGOT:
f41345a7 3896 dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma;
0451c93c 3897 break;
ec338859 3898
a85d7ed0 3899 case DT_JMPREL:
f41345a7 3900 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
a85d7ed0
NC		 3901 break;
3902
3903 case DT_PLTRELSZ:
f41345a7 3904 s = htab->elf.srelplt->output_section;
eea6121a 3905 dyn.d_un.d_val = s->size;
a85d7ed0
NC		 3906 break;
3907 }
0451c93c
MS		 3908
3909 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3910 }
3911
3912 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3913 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0 3914 {
f41345a7 3915 memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
0e1862bb 3916 if (bfd_link_pic (info))
0451c93c 3917 {
f41345a7 3918 memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry,
9aa17453
AK		 3919 PLT_FIRST_ENTRY_SIZE);
3920 }
26e41594 3921 else
9aa17453 3922 {
f41345a7 3923 memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry,
9aa17453 3924 PLT_FIRST_ENTRY_SIZE);
26e41594 3925 bfd_put_32 (output_bfd,
f41345a7
AK		 3926 htab->elf.sgotplt->output_section->vma
3927 + htab->elf.sgotplt->output_offset,
3928 htab->elf.splt->contents + 24);
26e41594 3929 }
f41345a7 3930 elf_section_data (htab->elf.splt->output_section)
0451c93c 3931 ->this_hdr.sh_entsize = 4;
a85d7ed0
NC		 3932 }
3933
3934 }
3935
f41345a7 3936 if (htab->elf.sgotplt)
a85d7ed0 3937 {
0451c93c 3938 /* Fill in the first three entries in the global offset table. */
f41345a7 3939 if (htab->elf.sgotplt->size > 0)
0451c93c
MS		 3940 {
3941 bfd_put_32 (output_bfd,
3942 (sdyn == NULL ? (bfd_vma) 0
3943 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3944 htab->elf.sgotplt->contents);
0451c93c 3945 /* One entry for shared object struct ptr. */
f41345a7 3946 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4);
0451c93c 3947 /* One entry for _dl_runtime_resolve. */
f41345a7 3948 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3949 }
a85d7ed0 3950
f41345a7 3951 elf_section_data (htab->elf.sgotplt->output_section)
0451c93c
MS		 3952 ->this_hdr.sh_entsize = 4;
3953 }
470b557a 3954 /* Finish dynamic symbol for local IFUNC symbols. */
c72f2fb2 3955 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
470b557a
AK		 3956 {
3957 struct plt_entry *local_plt;
3958 Elf_Internal_Sym *isym;
3959 Elf_Internal_Shdr *symtab_hdr;
3960
3961 symtab_hdr = &elf_symtab_hdr (ibfd);
3962
3963 local_plt = elf_s390_local_plt (ibfd);
3964 if (local_plt != NULL)
3965 for (i = 0; i < symtab_hdr->sh_info; i++)
3966 {
3967 if (local_plt[i].plt.offset != (bfd_vma) -1)
3968 {
3969 asection *sec = local_plt[i].sec;
3970 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3971 if (isym == NULL)
3972 return FALSE;
3973
3974 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3975 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3976 local_plt[i].plt.offset,
3977 isym->st_value
3978 + sec->output_section->vma
3979 + sec->output_offset);
3980
3981 }
3982 }
3983 }
b34976b6 3984 return TRUE;
a85d7ed0
NC		 3985}
3986
b34976b6 3987static bfd_boolean
2c3fc389 3988elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note)
979f4a38
NC		 3989{
3990 int offset;
eea6121a 3991 unsigned int size;
979f4a38
NC		 3992
3993 switch (note->descsz)
3994 {
3995 default:
b34976b6 3996 return FALSE;
979f4a38
NC		 3997
3998 case 224: /* S/390 Linux. */
3999 /* pr_cursig */
228e534f 4000 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
979f4a38
NC		 4001
4002 /* pr_pid */
228e534f 4003 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
979f4a38
NC		 4004
4005 /* pr_reg */
4006 offset = 72;
eea6121a 4007 size = 144;
979f4a38
NC		 4008 break;
4009 }
4010
4011 /* Make a ".reg/999" section. */
4012 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 4013 size, note->descpos + offset);
979f4a38
NC		 4014}
4015
4c45e5c9
JJ		 4016/* Return address for Ith PLT stub in section PLT, for relocation REL
4017 or (bfd_vma) -1 if it should not be included. */
4018
4019static bfd_vma
4020elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
4021 const arelent *rel ATTRIBUTE_UNUSED)
4022{
4023 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
4024}
4025
643f7afb
AK		 4026/* Merge backend specific data from an object file to the output
4027 object file when linking. */
4028
55786da2
AK		 4029static bfd_boolean
4030elf32_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4031{
643f7afb
AK		 4032 if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
4033 return TRUE;
4034
4035 if (!elf_s390_merge_obj_attributes (ibfd, obfd))
4036 return FALSE;
4037
55786da2
AK		 4038 elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
4039 return TRUE;
4040}
4041
4c45e5c9 4042
6d00b590 4043#define TARGET_BIG_SYM s390_elf32_vec
a85d7ed0
NC		 4044#define TARGET_BIG_NAME "elf32-s390"
4045#define ELF_ARCH bfd_arch_s390
ae95ffa6 4046#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 4047#define ELF_MACHINE_CODE EM_S390
4048#define ELF_MACHINE_ALT1 EM_S390_OLD
4049#define ELF_MAXPAGESIZE 0x1000
4050
4051#define elf_backend_can_gc_sections 1
51b64d56 4052#define elf_backend_can_refcount 1
a85d7ed0
NC		 4053#define elf_backend_want_got_plt 1
4054#define elf_backend_plt_readonly 1
4055#define elf_backend_want_plt_sym 0
4056#define elf_backend_got_header_size 12
b491616a 4057#define elf_backend_rela_normal 1
a85d7ed0 4058
26e41594 4059#define elf_info_to_howto elf_s390_info_to_howto
a85d7ed0 4060
a85d7ed0
NC		 4061#define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
4062#define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
4063#define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
157090f7 4064#define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
a85d7ed0 4065
55786da2
AK		 4066#define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
4067
a85d7ed0 4068#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
26e41594 4069#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c
MS		 4070#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
4071#define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
a85d7ed0
NC		 4072#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4073#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
26e41594
AM		 4074#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
4075#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
0451c93c 4076#define elf_backend_reloc_type_class elf_s390_reloc_type_class
26e41594 4077#define elf_backend_relocate_section elf_s390_relocate_section
a85d7ed0 4078#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 4079#define elf_backend_init_index_section _bfd_elf_init_1_index_section
979f4a38 4080#define elf_backend_grok_prstatus elf_s390_grok_prstatus
4c45e5c9 4081#define elf_backend_plt_sym_val elf_s390_plt_sym_val
470b557a 4082#define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
b9005ba7 4083#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
a85d7ed0 4084
69fc87f1 4085#define bfd_elf32_mkobject elf_s390_mkobject
26e41594 4086#define elf_backend_object_p elf_s390_object_p
a85d7ed0
NC		 4087
4088#include "elf32-target.h"
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