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Add missing ld makefile dependency for nios.
[deliverable/binutils-gdb.git] / bfd / elf32-s390.c
CommitLineData
a85d7ed0 1/* IBM S/390-specific support for 32-bit ELF
4b95cf5c 2 Copyright (C) 2000-2014 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 */
fb798c50 42 0, /* 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");
0451c93c 859 if (!info->shared)
3d4d4302 860 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
0451c93c 861
f41345a7 862 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
0451c93c
MS		 863 || (!info->shared && !htab->srelbss))
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
MS		 939{
940 if (info->shared)
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
1049f94e 981 if (info->relocatable)
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_GOTOFF16:
1116 case R_390_GOTOFF32:
1117 case R_390_GOTPC:
1118 case R_390_GOTPCDBL:
470b557a
AK		 1119 /* These relocs do not need a GOT slot. They just load the
1120 GOT pointer itself or address something else relative to
1121 the GOT. Since the GOT pointer has been set up above we
1122 are done. */
a85d7ed0
NC		 1123 break;
1124
fb798c50 1125 case R_390_PLT12DBL:
26e41594 1126 case R_390_PLT16DBL:
fb798c50 1127 case R_390_PLT24DBL:
26e41594 1128 case R_390_PLT32DBL:
a85d7ed0 1129 case R_390_PLT32:
5236c819
MS		 1130 case R_390_PLTOFF16:
1131 case R_390_PLTOFF32:
a85d7ed0 1132 /* This symbol requires a procedure linkage table entry. We
26e41594
AM		 1133 actually build the entry in adjust_dynamic_symbol,
1134 because this might be a case of linking PIC code which is
1135 never referenced by a dynamic object, in which case we
1136 don't need to generate a procedure linkage table entry
1137 after all. */
a85d7ed0
NC		 1138
1139 /* If this is a local symbol, we resolve it directly without
26e41594 1140 creating a procedure linkage table entry. */
5236c819
MS		 1141 if (h != NULL)
1142 {
f5385ebf 1143 h->needs_plt = 1;
5236c819
MS		 1144 h->plt.refcount += 1;
1145 }
1146 break;
a85d7ed0 1147
5236c819
MS		 1148 case R_390_GOTPLT12:
1149 case R_390_GOTPLT16:
bd1ea41b 1150 case R_390_GOTPLT20:
5236c819
MS		 1151 case R_390_GOTPLT32:
1152 case R_390_GOTPLTENT:
1153 /* This symbol requires either a procedure linkage table entry
1154 or an entry in the local got. We actually build the entry
1155 in adjust_dynamic_symbol because whether this is really a
1156 global reference can change and with it the fact if we have
1157 to create a plt entry or a local got entry. To be able to
1158 make a once global symbol a local one we have to keep track
1159 of the number of gotplt references that exist for this
1160 symbol. */
1161 if (h != NULL)
1162 {
1163 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1164 h->needs_plt = 1;
5236c819
MS		 1165 h->plt.refcount += 1;
1166 }
1167 else
1168 local_got_refcounts[r_symndx] += 1;
a85d7ed0
NC		 1169 break;
1170
69fc87f1
MS		 1171 case R_390_TLS_LDM32:
1172 htab->tls_ldm_got.refcount += 1;
1173 break;
1174
1175 case R_390_TLS_IE32:
1176 case R_390_TLS_GOTIE12:
bd1ea41b 1177 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1178 case R_390_TLS_GOTIE32:
1179 case R_390_TLS_IEENT:
1180 if (info->shared)
1181 info->flags |= DF_STATIC_TLS;
ae9a127f 1182 /* Fall through. */
69fc87f1
MS		 1183
1184 case R_390_GOT12:
26e41594 1185 case R_390_GOT16:
bd1ea41b 1186 case R_390_GOT20:
69fc87f1
MS		 1187 case R_390_GOT32:
1188 case R_390_GOTENT:
1189 case R_390_TLS_GD32:
1190 /* This symbol requires a global offset table entry. */
1191 switch (r_type)
1192 {
1193 default:
1194 case R_390_GOT12:
1195 case R_390_GOT16:
bd1ea41b 1196 case R_390_GOT20:
69fc87f1
MS		 1197 case R_390_GOT32:
1198 case R_390_GOTENT:
1199 tls_type = GOT_NORMAL;
1200 break;
1201 case R_390_TLS_GD32:
1202 tls_type = GOT_TLS_GD;
1203 break;
1204 case R_390_TLS_IE32:
1205 case R_390_TLS_GOTIE32:
1206 tls_type = GOT_TLS_IE;
1207 break;
1208 case R_390_TLS_GOTIE12:
bd1ea41b 1209 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1210 case R_390_TLS_IEENT:
1211 tls_type = GOT_TLS_IE_NLT;
1212 break;
1213 }
1214
1215 if (h != NULL)
1216 {
1217 h->got.refcount += 1;
1218 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1219 }
1220 else
1221 {
1222 local_got_refcounts[r_symndx] += 1;
1223 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1224 }
1225 /* If a TLS symbol is accessed using IE at least once,
1226 there is no point to use dynamic model for it. */
1227 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1228 {
1229 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1230 {
1231 (*_bfd_error_handler)
d003868e
AM		 1232 (_("%B: `%s' accessed both as normal and thread local symbol"),
1233 abfd, h->root.root.string);
69fc87f1
MS		 1234 return FALSE;
1235 }
1236 if (old_tls_type > tls_type)
1237 tls_type = old_tls_type;
1238 }
1239
1240 if (old_tls_type != tls_type)
1241 {
1242 if (h != NULL)
1243 elf_s390_hash_entry (h)->tls_type = tls_type;
1244 else
1245 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1246 }
1247
1248 if (r_type != R_390_TLS_IE32)
1249 break;
ae9a127f 1250 /* Fall through. */
69fc87f1
MS		 1251
1252 case R_390_TLS_LE32:
1253 if (!info->shared)
1254 break;
1255 info->flags |= DF_STATIC_TLS;
ae9a127f 1256 /* Fall through. */
69fc87f1 1257
26e41594
AM		 1258 case R_390_8:
1259 case R_390_16:
a85d7ed0 1260 case R_390_32:
26e41594 1261 case R_390_PC16:
fb798c50 1262 case R_390_PC12DBL:
26e41594 1263 case R_390_PC16DBL:
fb798c50 1264 case R_390_PC24DBL:
befc3abb 1265 case R_390_PC32DBL:
a85d7ed0 1266 case R_390_PC32:
470b557a 1267 if (h != NULL)
0451c93c
MS		 1268 {
1269 /* If this reloc is in a read-only section, we might
1270 need a copy reloc. We can't check reliably at this
1271 stage whether the section is read-only, as input
1272 sections have not yet been mapped to output sections.
1273 Tentatively set the flag for now, and correct in
1274 adjust_dynamic_symbol. */
f5385ebf 1275 h->non_got_ref = 1;
ec338859 1276
470b557a
AK		 1277 if (!info->shared)
1278 {
1279 /* We may need a .plt entry if the function this reloc
1280 refers to is in a shared lib. */
1281 h->plt.refcount += 1;
1282 }
0451c93c 1283 }
a85d7ed0
NC		 1284
1285 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1286 against a global symbol, or a non PC relative reloc
1287 against a local symbol, then we need to copy the reloc
1288 into the shared library. However, if we are linking with
1289 -Bsymbolic, we do not need to copy a reloc against a
1290 global symbol which is defined in an object we are
1291 including in the link (i.e., DEF_REGULAR is set). At
1292 this point we have not seen all the input files, so it is
1293 possible that DEF_REGULAR is not set now but will be set
1294 later (it is never cleared). In case of a weak definition,
1295 DEF_REGULAR may be cleared later by a strong definition in
1296 a shared library. We account for that possibility below by
1297 storing information in the relocs_copied field of the hash
1298 table entry. A similar situation occurs when creating
1299 shared libraries and symbol visibility changes render the
1300 symbol local.
1301
1302 If on the other hand, we are creating an executable, we
1303 may need to keep relocations for symbols satisfied by a
1304 dynamic library if we manage to avoid copy relocs for the
1305 symbol. */
1306 if ((info->shared
1307 && (sec->flags & SEC_ALLOC) != 0
ec338859 1308 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1309 && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1310 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1311 && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL
befc3abb 1312 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
0451c93c
MS		 1313 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1314 || (h != NULL
8c21ca21 1315 && (! SYMBOLIC_BIND (info, h)
0451c93c 1316 || h->root.type == bfd_link_hash_defweak
f5385ebf 1317 || !h->def_regular))))
64285810
MS		 1318 || (ELIMINATE_COPY_RELOCS
1319 && !info->shared
0451c93c
MS		 1320 && (sec->flags & SEC_ALLOC) != 0
1321 && h != NULL
1322 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1323 || !h->def_regular)))
a85d7ed0 1324 {
00d8c7a9
AK		 1325 struct elf_dyn_relocs *p;
1326 struct elf_dyn_relocs **head;
ec338859 1327
0451c93c
MS		 1328 /* We must copy these reloc types into the output file.
1329 Create a reloc section in dynobj and make room for
1330 this reloc. */
a85d7ed0
NC		 1331 if (sreloc == NULL)
1332 {
0451c93c
MS		 1333 if (htab->elf.dynobj == NULL)
1334 htab->elf.dynobj = abfd;
a85d7ed0 1335
83bac4b0
NC		 1336 sreloc = _bfd_elf_make_dynamic_reloc_section
1337 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1338
a85d7ed0 1339 if (sreloc == NULL)
83bac4b0 1340 return FALSE;
a85d7ed0
NC		 1341 }
1342
0451c93c
MS		 1343 /* If this is a global symbol, we count the number of
1344 relocations we need for this symbol. */
1345 if (h != NULL)
a85d7ed0 1346 {
ec338859 1347 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS		 1348 }
1349 else
1350 {
ec338859
AM		 1351 /* Track dynamic relocs needed for local syms too.
1352 We really need local syms available to do this
1353 easily. Oh well. */
ec338859 1354 asection *s;
6edfbbad 1355 void *vpp;
ae9a127f 1356
87d72d41
AM		 1357 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1358 abfd, r_symndx);
1359 if (isym == NULL)
b34976b6 1360 return FALSE;
ec338859 1361
87d72d41
AM		 1362 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1363 if (s == NULL)
1364 s = sec;
1365
6edfbbad 1366 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1367 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1368 }
1369
1370 p = *head;
1371 if (p == NULL || p->sec != sec)
1372 {
1373 bfd_size_type amt = sizeof *p;
ae9a127f 1374
00d8c7a9 1375 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1376 bfd_alloc (htab->elf.dynobj, amt));
1377 if (p == NULL)
b34976b6 1378 return FALSE;
ec338859
AM		 1379 p->next = *head;
1380 *head = p;
1381 p->sec = sec;
1382 p->count = 0;
1383 p->pc_count = 0;
a85d7ed0 1384 }
ec338859
AM		 1385
1386 p->count += 1;
1387 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
fb798c50 1388 || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL
ec338859 1389 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
fb798c50 1390 || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL
befc3abb 1391 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
ec338859
AM		 1392 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1393 p->pc_count += 1;
a85d7ed0 1394 }
a85d7ed0 1395 break;
ec338859 1396
a85d7ed0
NC		 1397 /* This relocation describes the C++ object vtable hierarchy.
1398 Reconstruct it for later use during GC. */
26e41594 1399 case R_390_GNU_VTINHERIT:
c152c796 1400 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
26e41594
AM		 1401 return FALSE;
1402 break;
ec338859 1403
a85d7ed0
NC		 1404 /* This relocation describes which C++ vtable entries are actually
1405 used. Record for later use during GC. */
26e41594 1406 case R_390_GNU_VTENTRY:
d17e0c6e
JB		 1407 BFD_ASSERT (h != NULL);
1408 if (h != NULL
1409 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
26e41594
AM		 1410 return FALSE;
1411 break;
ec338859 1412
a85d7ed0
NC		 1413 default:
1414 break;
1415 }
1416 }
1417
b34976b6 1418 return TRUE;
a85d7ed0
NC		 1419}
1420
1421/* Return the section that should be marked against GC for a given
1422 relocation. */
1423
1424static asection *
07adf181
AM		 1425elf_s390_gc_mark_hook (asection *sec,
1426 struct bfd_link_info *info,
1427 Elf_Internal_Rela *rel,
1428 struct elf_link_hash_entry *h,
1429 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1430{
1431 if (h != NULL)
07adf181
AM		 1432 switch (ELF32_R_TYPE (rel->r_info))
1433 {
1434 case R_390_GNU_VTINHERIT:
1435 case R_390_GNU_VTENTRY:
1436 return NULL;
1437 }
1438 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0 1439
a85d7ed0
NC		 1440}
1441
1442/* Update the got entry reference counts for the section being removed. */
1443
b34976b6 1444static bfd_boolean
07adf181
AM		 1445elf_s390_gc_sweep_hook (bfd *abfd,
1446 struct bfd_link_info *info,
1447 asection *sec,
1448 const Elf_Internal_Rela *relocs)
a85d7ed0 1449{
470b557a 1450 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1451 Elf_Internal_Shdr *symtab_hdr;
1452 struct elf_link_hash_entry **sym_hashes;
1453 bfd_signed_vma *local_got_refcounts;
1454 const Elf_Internal_Rela *rel, *relend;
a85d7ed0 1455
7dda2462
TG		 1456 if (info->relocatable)
1457 return TRUE;
1458
470b557a
AK		 1459 htab = elf_s390_hash_table (info);
1460 if (htab == NULL)
1461 return FALSE;
1462
ec338859 1463 elf_section_data (sec)->local_dynrel = NULL;
a85d7ed0 1464
0ffa91dd 1465 symtab_hdr = &elf_symtab_hdr (abfd);
0451c93c
MS		 1466 sym_hashes = elf_sym_hashes (abfd);
1467 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0
NC		 1468
1469 relend = relocs + sec->reloc_count;
1470 for (rel = relocs; rel < relend; rel++)
5236c819 1471 {
26e41594
AM		 1472 unsigned long r_symndx;
1473 unsigned int r_type;
1474 struct elf_link_hash_entry *h = NULL;
1475
5236c819 1476 r_symndx = ELF32_R_SYM (rel->r_info);
26e41594
AM		 1477 if (r_symndx >= symtab_hdr->sh_info)
1478 {
1479 struct elf_s390_link_hash_entry *eh;
00d8c7a9
AK		 1480 struct elf_dyn_relocs **pp;
1481 struct elf_dyn_relocs *p;
0451c93c 1482
26e41594 1483 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1484 while (h->root.type == bfd_link_hash_indirect
1485 || h->root.type == bfd_link_hash_warning)
1486 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1487 eh = (struct elf_s390_link_hash_entry *) h;
5236c819 1488
26e41594
AM		 1489 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1490 if (p->sec == sec)
1491 {
1492 /* Everything must go for SEC. */
1493 *pp = p->next;
1494 break;
1495 }
1496 }
470b557a
AK		 1497 else
1498 {
1499 Elf_Internal_Sym *isym;
1500
1501 /* A local symbol. */
1502 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1503 abfd, r_symndx);
1504 if (isym == NULL)
1505 return FALSE;
1506
1507 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1508 {
1509 struct plt_entry *plt = elf_s390_local_plt (abfd);
1510 if (plt[r_symndx].plt.refcount > 0)
1511 plt[r_symndx].plt.refcount--;
1512 }
1513 }
26e41594
AM		 1514
1515 r_type = ELF32_R_TYPE (rel->r_info);
1516 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
69fc87f1 1517 switch (r_type)
5236c819 1518 {
69fc87f1
MS		 1519 case R_390_TLS_LDM32:
1520 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1521 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1522 break;
1523
1524 case R_390_TLS_GD32:
1525 case R_390_TLS_IE32:
1526 case R_390_TLS_GOTIE12:
bd1ea41b 1527 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1528 case R_390_TLS_GOTIE32:
1529 case R_390_TLS_IEENT:
5236c819
MS		 1530 case R_390_GOT12:
1531 case R_390_GOT16:
bd1ea41b 1532 case R_390_GOT20:
5236c819
MS		 1533 case R_390_GOT32:
1534 case R_390_GOTOFF16:
1535 case R_390_GOTOFF32:
1536 case R_390_GOTPC:
1537 case R_390_GOTPCDBL:
1538 case R_390_GOTENT:
1539 if (h != NULL)
1540 {
1541 if (h->got.refcount > 0)
1542 h->got.refcount -= 1;
1543 }
1544 else if (local_got_refcounts != NULL)
1545 {
1546 if (local_got_refcounts[r_symndx] > 0)
1547 local_got_refcounts[r_symndx] -= 1;
1548 }
26e41594 1549 break;
a85d7ed0 1550
5236c819
MS		 1551 case R_390_8:
1552 case R_390_12:
1553 case R_390_16:
bd1ea41b 1554 case R_390_20:
5236c819
MS		 1555 case R_390_32:
1556 case R_390_PC16:
fb798c50 1557 case R_390_PC12DBL:
5236c819 1558 case R_390_PC16DBL:
fb798c50 1559 case R_390_PC24DBL:
5236c819
MS		 1560 case R_390_PC32DBL:
1561 case R_390_PC32:
26e41594
AM		 1562 if (info->shared)
1563 break;
1564 /* Fall through. */
1565
fb798c50 1566 case R_390_PLT12DBL:
69fc87f1 1567 case R_390_PLT16DBL:
fb798c50 1568 case R_390_PLT24DBL:
69fc87f1
MS		 1569 case R_390_PLT32DBL:
1570 case R_390_PLT32:
1571 case R_390_PLTOFF16:
1572 case R_390_PLTOFF32:
1573 if (h != NULL)
1574 {
1575 if (h->plt.refcount > 0)
1576 h->plt.refcount -= 1;
1577 }
1578 break;
1579
1580 case R_390_GOTPLT12:
1581 case R_390_GOTPLT16:
bd1ea41b 1582 case R_390_GOTPLT20:
69fc87f1
MS		 1583 case R_390_GOTPLT32:
1584 case R_390_GOTPLTENT:
1585 if (h != NULL)
1586 {
1587 if (h->plt.refcount > 0)
1588 {
1589 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1590 h->plt.refcount -= 1;
1591 }
1592 }
1593 else if (local_got_refcounts != NULL)
1594 {
1595 if (local_got_refcounts[r_symndx] > 0)
1596 local_got_refcounts[r_symndx] -= 1;
1597 }
1598 break;
1599
5236c819
MS		 1600 default:
1601 break;
1602 }
1603 }
a85d7ed0 1604
b34976b6 1605 return TRUE;
a85d7ed0
NC		 1606}
1607
5236c819
MS		 1608/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1609 entry but we found we will not create any. Called when we find we will
1610 not have any PLT for this symbol, by for example
1611 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1612 or elf_s390_size_dynamic_sections if no dynamic sections will be
1613 created (we're only linking static objects). */
1614
1615static void
2c3fc389 1616elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1617{
1618 if (h->elf.root.type == bfd_link_hash_warning)
1619 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1620
1621 if (h->gotplt_refcount <= 0)
1622 return;
1623
1624 /* We simply add the number of gotplt references to the number
1625 * of got references for this symbol. */
1626 h->elf.got.refcount += h->gotplt_refcount;
1627 h->gotplt_refcount = -1;
1628}
1629
a85d7ed0
NC		 1630/* Adjust a symbol defined by a dynamic object and referenced by a
1631 regular object. The current definition is in some section of the
1632 dynamic object, but we're not including those sections. We have to
1633 change the definition to something the rest of the link can
1634 understand. */
1635
b34976b6 1636static bfd_boolean
2c3fc389
NC		 1637elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1638 struct elf_link_hash_entry *h)
a85d7ed0 1639{
0451c93c 1640 struct elf_s390_link_hash_table *htab;
a85d7ed0 1641 asection *s;
a85d7ed0 1642
470b557a
AK		 1643 /* STT_GNU_IFUNC symbol must go through PLT. */
1644 if (s390_is_ifunc_symbol_p (h))
1645 return TRUE;
1646
a85d7ed0
NC		 1647 /* If this is a function, put it in the procedure linkage table. We
1648 will fill in the contents of the procedure linkage table later
cedb70c5 1649 (although we could actually do it here). */
a85d7ed0 1650 if (h->type == STT_FUNC
f5385ebf 1651 || h->needs_plt)
a85d7ed0 1652 {
0451c93c 1653 if (h->plt.refcount <= 0
8c21ca21
AK		 1654 || SYMBOL_CALLS_LOCAL (info, h)
1655 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1656 && h->root.type != bfd_link_hash_undefweak))
a85d7ed0
NC		 1657 {
1658 /* This case can occur if we saw a PLT32 reloc in an input
26e41594
AM		 1659 file, but the symbol was never referred to by a dynamic
1660 object, or if all references were garbage collected. In
a85d7ed0
NC		 1661 such a case, we don't actually need to build a procedure
1662 linkage table, and we can just do a PC32 reloc instead. */
1663 h->plt.offset = (bfd_vma) -1;
f5385ebf 1664 h->needs_plt = 0;
5236c819 1665 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1666 }
1667
b34976b6 1668 return TRUE;
a85d7ed0 1669 }
bbd7ec4a 1670 else
0451c93c
MS		 1671 /* It's possible that we incorrectly decided a .plt reloc was
1672 needed for an R_390_PC32 reloc to a non-function sym in
1673 check_relocs. We can't decide accurately between function and
1674 non-function syms in check-relocs; Objects loaded later in
1675 the link may change h->type. So fix it now. */
bbd7ec4a 1676 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1677
1678 /* If this is a weak symbol, and there is a real definition, the
1679 processor independent code will have arranged for us to see the
1680 real definition first, and we can just use the same value. */
f6e332e6 1681 if (h->u.weakdef != NULL)
a85d7ed0 1682 {
f6e332e6
AM		 1683 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1684 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1685 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1686 h->root.u.def.value = h->u.weakdef->root.u.def.value;
64285810 1687 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1688 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1689 return TRUE;
a85d7ed0
NC		 1690 }
1691
1692 /* This is a reference to a symbol defined by a dynamic object which
1693 is not a function. */
1694
1695 /* If we are creating a shared library, we must presume that the
1696 only references to the symbol are via the global offset table.
1697 For such cases we need not do anything here; the relocations will
1698 be handled correctly by relocate_section. */
1699 if (info->shared)
b34976b6 1700 return TRUE;
a85d7ed0
NC		 1701
1702 /* If there are no references to this symbol that do not use the
1703 GOT, we don't need to generate a copy reloc. */
f5385ebf 1704 if (!h->non_got_ref)
b34976b6 1705 return TRUE;
a85d7ed0 1706
0451c93c
MS		 1707 /* If -z nocopyreloc was given, we won't generate them either. */
1708 if (info->nocopyreloc)
1709 {
f5385ebf 1710 h->non_got_ref = 0;
b34976b6 1711 return TRUE;
0451c93c
MS		 1712 }
1713
64285810 1714 if (ELIMINATE_COPY_RELOCS)
0451c93c 1715 {
64285810 1716 struct elf_s390_link_hash_entry * eh;
00d8c7a9 1717 struct elf_dyn_relocs *p;
0451c93c 1718
64285810
MS		 1719 eh = (struct elf_s390_link_hash_entry *) h;
1720 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1721 {
1722 s = p->sec->output_section;
1723 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1724 break;
1725 }
1726
1727 /* If we didn't find any dynamic relocs in read-only sections, then
1728 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1729 if (p == NULL)
1730 {
f5385ebf 1731 h->non_got_ref = 0;
64285810
MS		 1732 return TRUE;
1733 }
0451c93c
MS		 1734 }
1735
a85d7ed0
NC		 1736 /* We must allocate the symbol in our .dynbss section, which will
1737 become part of the .bss section of the executable. There will be
1738 an entry for this symbol in the .dynsym section. The dynamic
1739 object will contain position independent code, so all references
1740 from the dynamic object to this symbol will go through the global
1741 offset table. The dynamic linker will use the .dynsym entry to
1742 determine the address it must put in the global offset table, so
1743 both the dynamic object and the regular object will refer to the
1744 same memory location for the variable. */
1745
0451c93c 1746 htab = elf_s390_hash_table (info);
a85d7ed0 1747
0451c93c
MS		 1748 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1749 copy the initial value out of the dynamic object and into the
1750 runtime process image. */
1d7e9d18 1751 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1752 {
eea6121a 1753 htab->srelbss->size += sizeof (Elf32_External_Rela);
f5385ebf 1754 h->needs_copy = 1;
a85d7ed0
NC		 1755 }
1756
0451c93c 1757 s = htab->sdynbss;
a85d7ed0 1758
027297b7 1759 return _bfd_elf_adjust_dynamic_copy (h, s);
a85d7ed0
NC		 1760}
1761
0451c93c
MS		 1762/* Allocate space in .plt, .got and associated reloc sections for
1763 dynamic relocs. */
1764
b34976b6 1765static bfd_boolean
2c3fc389 1766allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1767{
1768 struct bfd_link_info *info;
1769 struct elf_s390_link_hash_table *htab;
470b557a 1770 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1771 struct elf_dyn_relocs *p;
0451c93c 1772
e92d460e 1773 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1774 return TRUE;
0451c93c
MS		 1775
1776 info = (struct bfd_link_info *) inf;
1777 htab = elf_s390_hash_table (info);
1778
470b557a
AK		 1779 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1780 here if it is defined and referenced in a non-shared object. */
1781 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1782 return s390_elf_allocate_ifunc_dyn_relocs (info, h,
1783 &eh->dyn_relocs);
1784 else if (htab->elf.dynamic_sections_created
1785 && h->plt.refcount > 0)
0451c93c
MS		 1786 {
1787 /* Make sure this symbol is output as a dynamic symbol.
1788 Undefined weak syms won't yet be marked as dynamic. */
1789 if (h->dynindx == -1
f5385ebf 1790 && !h->forced_local)
0451c93c 1791 {
c152c796 1792 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1793 return FALSE;
0451c93c
MS		 1794 }
1795
82058a73 1796 if (info->shared
4ec72bde 1797 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1798 {
f41345a7 1799 asection *s = htab->elf.splt;
0451c93c
MS		 1800
1801 /* If this is the first .plt entry, make room for the special
1802 first entry. */
eea6121a
AM		 1803 if (s->size == 0)
1804 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1805
eea6121a 1806 h->plt.offset = s->size;
0451c93c
MS		 1807
1808 /* If this symbol is not defined in a regular file, and we are
1809 not generating a shared library, then set the symbol to this
1810 location in the .plt. This is required to make function
1811 pointers compare as equal between the normal executable and
1812 the shared library. */
1813 if (! info->shared
f5385ebf 1814 && !h->def_regular)
0451c93c
MS		 1815 {
1816 h->root.u.def.section = s;
1817 h->root.u.def.value = h->plt.offset;
1818 }
ec338859 1819
0451c93c 1820 /* Make room for this entry. */
eea6121a 1821 s->size += PLT_ENTRY_SIZE;
ec338859 1822
0451c93c
MS		 1823 /* We also need to make an entry in the .got.plt section, which
1824 will be placed in the .got section by the linker script. */
f41345a7 1825 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1826
1827 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1828 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1829 }
1830 else
1831 {
1832 h->plt.offset = (bfd_vma) -1;
f5385ebf 1833 h->needs_plt = 0;
5236c819 1834 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c 1835 }
ec338859 1836 }
0451c93c
MS		 1837 else
1838 {
1839 h->plt.offset = (bfd_vma) -1;
f5385ebf 1840 h->needs_plt = 0;
5236c819 1841 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
ec338859
AM		 1842 }
1843
69fc87f1
MS		 1844 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1845 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1846 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1847 we can save the dynamic TLS relocation. */
1848 if (h->got.refcount > 0
1849 && !info->shared
1850 && h->dynindx == -1
1851 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
0451c93c 1852 {
69fc87f1
MS		 1853 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1854 /* For the GOTIE access without a literal pool entry the offset has
1855 to be stored somewhere. The immediate value in the instruction
1856 is not bit enough so the value is stored in the got. */
1857 {
f41345a7
AK		 1858 h->got.offset = htab->elf.sgot->size;
1859 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1860 }
1861 else
1862 h->got.offset = (bfd_vma) -1;
1863 }
1864 else if (h->got.refcount > 0)
1865 {
0451c93c 1866 asection *s;
b34976b6 1867 bfd_boolean dyn;
69fc87f1 1868 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1869
1870 /* Make sure this symbol is output as a dynamic symbol.
1871 Undefined weak syms won't yet be marked as dynamic. */
1872 if (h->dynindx == -1
f5385ebf 1873 && !h->forced_local)
0451c93c 1874 {
c152c796 1875 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1876 return FALSE;
0451c93c
MS		 1877 }
1878
f41345a7 1879 s = htab->elf.sgot;
eea6121a
AM		 1880 h->got.offset = s->size;
1881 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1882 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1883 if (tls_type == GOT_TLS_GD)
eea6121a 1884 s->size += GOT_ENTRY_SIZE;
0451c93c 1885 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1886 /* R_390_TLS_IE32 needs one dynamic relocation,
1887 R_390_TLS_GD32 needs one if local symbol and two if global. */
1888 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1889 || tls_type >= GOT_TLS_IE)
f41345a7 1890 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1 1891 else if (tls_type == GOT_TLS_GD)
f41345a7 1892 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela);
82058a73
MS		 1893 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1894 || h->root.type != bfd_link_hash_undefweak)
1895 && (info->shared
1896 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1897 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1898 }
1899 else
1900 h->got.offset = (bfd_vma) -1;
1901
0451c93c 1902 if (eh->dyn_relocs == NULL)
b34976b6 1903 return TRUE;
0451c93c
MS		 1904
1905 /* In the shared -Bsymbolic case, discard space allocated for
1906 dynamic pc-relative relocs against symbols which turn out to be
1907 defined in regular objects. For the normal shared case, discard
1908 space for pc-relative relocs that have become local due to symbol
1909 visibility changes. */
1910
1911 if (info->shared)
1912 {
8c21ca21 1913 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1914 {
00d8c7a9 1915 struct elf_dyn_relocs **pp;
0451c93c
MS		 1916
1917 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1918 {
1919 p->count -= p->pc_count;
1920 p->pc_count = 0;
1921 if (p->count == 0)
1922 *pp = p->next;
1923 else
1924 pp = &p->next;
1925 }
1926 }
82058a73
MS		 1927
1928 /* Also discard relocs on undefined weak syms with non-default
1929 visibility. */
22d606e9 1930 if (eh->dyn_relocs != NULL
82058a73 1931 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 1932 {
1933 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1934 eh->dyn_relocs = NULL;
1935
1936 /* Make sure undefined weak symbols are output as a dynamic
1937 symbol in PIEs. */
1938 else if (h->dynindx == -1
1939 && !h->forced_local)
1940 {
1941 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1942 return FALSE;
1943 }
1944 }
0451c93c 1945 }
64285810 1946 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1947 {
1948 /* For the non-shared case, discard space for relocs against
1949 symbols which turn out to need copy relocs or are not
1950 dynamic. */
1951
f5385ebf
AM		 1952 if (!h->non_got_ref
1953 && ((h->def_dynamic
1954 && !h->def_regular)
0451c93c
MS		 1955 || (htab->elf.dynamic_sections_created
1956 && (h->root.type == bfd_link_hash_undefweak
1957 || h->root.type == bfd_link_hash_undefined))))
1958 {
1959 /* Make sure this symbol is output as a dynamic symbol.
1960 Undefined weak syms won't yet be marked as dynamic. */
1961 if (h->dynindx == -1
f5385ebf 1962 && !h->forced_local)
0451c93c 1963 {
c152c796 1964 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1965 return FALSE;
0451c93c
MS		 1966 }
1967
1968 /* If that succeeded, we know we'll be keeping all the
1969 relocs. */
1970 if (h->dynindx != -1)
1971 goto keep;
1972 }
1973
1974 eh->dyn_relocs = NULL;
1975
ec338859 1976 keep: ;
0451c93c
MS		 1977 }
1978
1979 /* Finally, allocate space. */
1980 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1981 {
1982 asection *sreloc = elf_section_data (p->sec)->sreloc;
ae9a127f 1983
eea6121a 1984 sreloc->size += p->count * sizeof (Elf32_External_Rela);
0451c93c
MS		 1985 }
1986
b34976b6 1987 return TRUE;
0451c93c
MS		 1988}
1989
1990/* Find any dynamic relocs that apply to read-only sections. */
1991
b34976b6 1992static bfd_boolean
2c3fc389 1993readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1994{
1995 struct elf_s390_link_hash_entry *eh;
00d8c7a9 1996 struct elf_dyn_relocs *p;
0451c93c
MS		 1997
1998 eh = (struct elf_s390_link_hash_entry *) h;
1999 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2000 {
2001 asection *s = p->sec->output_section;
2002
2003 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2004 {
2005 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2006
2007 info->flags |= DF_TEXTREL;
2008
2009 /* Not an error, just cut short the traversal. */
b34976b6 2010 return FALSE;
0451c93c
MS		 2011 }
2012 }
b34976b6 2013 return TRUE;
0451c93c
MS		 2014}
2015
a85d7ed0
NC		 2016/* Set the sizes of the dynamic sections. */
2017
b34976b6 2018static bfd_boolean
2c3fc389
NC		 2019elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2020 struct bfd_link_info *info)
a85d7ed0 2021{
0451c93c 2022 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2023 bfd *dynobj;
2024 asection *s;
b34976b6 2025 bfd_boolean relocs;
0451c93c 2026 bfd *ibfd;
a85d7ed0 2027
0451c93c
MS		 2028 htab = elf_s390_hash_table (info);
2029 dynobj = htab->elf.dynobj;
2030 if (dynobj == NULL)
2031 abort ();
a85d7ed0 2032
0451c93c 2033 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2034 {
2035 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2036 if (info->executable)
a85d7ed0 2037 {
3d4d4302 2038 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 2039 if (s == NULL)
2040 abort ();
eea6121a 2041 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 2042 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2043 }
2044 }
a85d7ed0 2045
0451c93c
MS		 2046 /* Set up .got offsets for local syms, and space for local dynamic
2047 relocs. */
2048 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
a85d7ed0 2049 {
0451c93c
MS		 2050 bfd_signed_vma *local_got;
2051 bfd_signed_vma *end_local_got;
69fc87f1 2052 char *local_tls_type;
0451c93c
MS		 2053 bfd_size_type locsymcount;
2054 Elf_Internal_Shdr *symtab_hdr;
2055 asection *srela;
470b557a
AK		 2056 struct plt_entry *local_plt;
2057 unsigned int i;
a85d7ed0 2058
0ffa91dd 2059 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 2060 continue;
2061
0451c93c 2062 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 2063 {
00d8c7a9 2064 struct elf_dyn_relocs *p;
0451c93c 2065
6edfbbad 2066 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 2067 {
ec338859
AM		 2068 if (!bfd_is_abs_section (p->sec)
2069 && bfd_is_abs_section (p->sec->output_section))
2070 {
2071 /* Input section has been discarded, either because
2072 it is a copy of a linkonce section or due to
2073 linker script /DISCARD/, so we'll be discarding
2074 the relocs too. */
2075 }
248866a8 2076 else if (p->count != 0)
ec338859
AM		 2077 {
2078 srela = elf_section_data (p->sec)->sreloc;
eea6121a 2079 srela->size += p->count * sizeof (Elf32_External_Rela);
248866a8
AM		 2080 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2081 info->flags |= DF_TEXTREL;
ec338859 2082 }
a85d7ed0
NC		 2083 }
2084 }
0451c93c
MS		 2085
2086 local_got = elf_local_got_refcounts (ibfd);
2087 if (!local_got)
2088 continue;
2089
0ffa91dd 2090 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 2091 locsymcount = symtab_hdr->sh_info;
2092 end_local_got = local_got + locsymcount;
69fc87f1 2093 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 2094 s = htab->elf.sgot;
2095 srela = htab->elf.srelgot;
69fc87f1 2096 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 2097 {
0451c93c 2098 if (*local_got > 0)
a85d7ed0 2099 {
eea6121a
AM		 2100 *local_got = s->size;
2101 s->size += GOT_ENTRY_SIZE;
69fc87f1 2102 if (*local_tls_type == GOT_TLS_GD)
eea6121a 2103 s->size += GOT_ENTRY_SIZE;
0451c93c 2104 if (info->shared)
eea6121a 2105 srela->size += sizeof (Elf32_External_Rela);
a85d7ed0
NC		 2106 }
2107 else
0451c93c
MS		 2108 *local_got = (bfd_vma) -1;
2109 }
470b557a
AK		 2110 local_plt = elf_s390_local_plt (ibfd);
2111 for (i = 0; i < symtab_hdr->sh_info; i++)
2112 {
2113 if (local_plt[i].plt.refcount > 0)
2114 {
2115 local_plt[i].plt.offset = htab->elf.iplt->size;
2116 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2117 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2118 htab->elf.irelplt->size += RELA_ENTRY_SIZE;
2119 }
2120 else
2121 local_plt[i].plt.offset = (bfd_vma) -1;
2122 }
0451c93c
MS		 2123 }
2124
69fc87f1
MS		 2125 if (htab->tls_ldm_got.refcount > 0)
2126 {
2127 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2128 relocs. */
f41345a7
AK		 2129 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2130 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2131 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1
MS		 2132 }
2133 else
2134 htab->tls_ldm_got.offset = -1;
2135
0451c93c
MS		 2136 /* Allocate global sym .plt and .got entries, and space for global
2137 sym dynamic relocs. */
2c3fc389 2138 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 2139
2140 /* We now have determined the sizes of the various dynamic sections.
2141 Allocate memory for them. */
b34976b6 2142 relocs = FALSE;
0451c93c
MS		 2143 for (s = dynobj->sections; s != NULL; s = s->next)
2144 {
2145 if ((s->flags & SEC_LINKER_CREATED) == 0)
2146 continue;
2147
f41345a7
AK		 2148 if (s == htab->elf.splt
2149 || s == htab->elf.sgot
2150 || s == htab->elf.sgotplt
470b557a
AK		 2151 || s == htab->sdynbss
2152 || s == htab->elf.iplt
2153 || s == htab->elf.igotplt
2154 || s == htab->irelifunc)
0451c93c
MS		 2155 {
2156 /* Strip this section if we don't need it; see the
2157 comment below. */
a85d7ed0 2158 }
0112cd26 2159 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 2160 {
eea6121a 2161 if (s->size != 0)
b34976b6 2162 relocs = TRUE;
ec338859 2163
0451c93c
MS		 2164 /* We use the reloc_count field as a counter if we need
2165 to copy relocs into the output file. */
2166 s->reloc_count = 0;
2167 }
2168 else
a85d7ed0
NC		 2169 {
2170 /* It's not one of our sections, so don't allocate space. */
2171 continue;
2172 }
2173
eea6121a 2174 if (s->size == 0)
a85d7ed0 2175 {
0451c93c
MS		 2176 /* If we don't need this section, strip it from the
2177 output file. This is to handle .rela.bss and
2178 .rela.plt. We must create it in
2179 create_dynamic_sections, because it must be created
2180 before the linker maps input sections to output
2181 sections. The linker does that before
2182 adjust_dynamic_symbol is called, and it is that
2183 function which decides whether anything needs to go
2184 into these sections. */
2185
8423293d 2186 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 2187 continue;
2188 }
2189
c456f082
AM		 2190 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2191 continue;
2192
0451c93c
MS		 2193 /* Allocate memory for the section contents. We use bfd_zalloc
2194 here in case unused entries are not reclaimed before the
2195 section's contents are written out. This should not happen,
2196 but this way if it does, we get a R_390_NONE reloc instead
2197 of garbage. */
eea6121a 2198 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 2199 if (s->contents == NULL)
b34976b6 2200 return FALSE;
a85d7ed0 2201 }
ec338859 2202
0451c93c 2203 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2204 {
2205 /* Add some entries to the .dynamic section. We fill in the
2206 values later, in elf_s390_finish_dynamic_sections, but we
2207 must add the entries now so that we get the correct size for
2208 the .dynamic section. The DT_DEBUG entry is filled in by the
2209 dynamic linker and used by the debugger. */
dc810e39 2210#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2211 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
ec338859 2212
36af4a4e 2213 if (info->executable)
a85d7ed0 2214 {
dc810e39 2215 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2216 return FALSE;
a85d7ed0 2217 }
ec338859 2218
f41345a7 2219 if (htab->elf.splt->size != 0)
a85d7ed0 2220 {
dc810e39
AM		 2221 if (!add_dynamic_entry (DT_PLTGOT, 0)
2222 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2223 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2224 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2225 return FALSE;
a85d7ed0 2226 }
ec338859 2227
a85d7ed0 2228 if (relocs)
26e41594
AM		 2229 {
2230 if (!add_dynamic_entry (DT_RELA, 0)
2231 || !add_dynamic_entry (DT_RELASZ, 0)
2232 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 2233 return FALSE;
a85d7ed0 2234
0451c93c
MS		 2235 /* If any dynamic relocs apply to a read-only section,
2236 then we need a DT_TEXTREL entry. */
248866a8 2237 if ((info->flags & DF_TEXTREL) == 0)
2c3fc389 2238 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
ec338859 2239
0451c93c
MS		 2240 if ((info->flags & DF_TEXTREL) != 0)
2241 {
2242 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2243 return FALSE;
0451c93c 2244 }
a85d7ed0
NC		 2245 }
2246 }
dc810e39 2247#undef add_dynamic_entry
ec338859 2248
b34976b6 2249 return TRUE;
a85d7ed0
NC		 2250}
2251
69fc87f1
MS		 2252/* Return the base VMA address which should be subtracted from real addresses
2253 when resolving @dtpoff relocation.
2254 This is PT_TLS segment p_vaddr. */
2255
2256static bfd_vma
2c3fc389 2257dtpoff_base (struct bfd_link_info *info)
69fc87f1 2258{
e1918d23
AM		 2259 /* If tls_sec is NULL, we should have signalled an error already. */
2260 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2261 return 0;
e1918d23 2262 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2263}
2264
2265/* Return the relocation value for @tpoff relocation
2266 if STT_TLS virtual address is ADDRESS. */
2267
2268static bfd_vma
2c3fc389 2269tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2270{
e1918d23 2271 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2272
e1918d23
AM		 2273 /* If tls_sec is NULL, we should have signalled an error already. */
2274 if (htab->tls_sec == NULL)
69fc87f1 2275 return 0;
e1918d23 2276 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2277}
2278
2279/* Complain if TLS instruction relocation is against an invalid
2280 instruction. */
2281
2282static void
2c3fc389
NC		 2283invalid_tls_insn (bfd *input_bfd,
2284 asection *input_section,
2285 Elf_Internal_Rela *rel)
69fc87f1
MS		 2286{
2287 reloc_howto_type *howto;
2288
2289 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2290 (*_bfd_error_handler)
d003868e
AM		 2291 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2292 input_bfd,
2293 input_section,
69fc87f1
MS		 2294 (long) rel->r_offset,
2295 howto->name);
77df2968 2296 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2297}
2298
a85d7ed0
NC		 2299/* Relocate a 390 ELF section. */
2300
b34976b6 2301static bfd_boolean
2c3fc389
NC		 2302elf_s390_relocate_section (bfd *output_bfd,
2303 struct bfd_link_info *info,
2304 bfd *input_bfd,
2305 asection *input_section,
2306 bfd_byte *contents,
2307 Elf_Internal_Rela *relocs,
2308 Elf_Internal_Sym *local_syms,
2309 asection **local_sections)
a85d7ed0 2310{
0451c93c 2311 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2312 Elf_Internal_Shdr *symtab_hdr;
2313 struct elf_link_hash_entry **sym_hashes;
2314 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2315 Elf_Internal_Rela *rel;
2316 Elf_Internal_Rela *relend;
2317
0ffa91dd
NC		 2318 BFD_ASSERT (is_s390_elf (input_bfd));
2319
0451c93c 2320 htab = elf_s390_hash_table (info);
0ffa91dd 2321 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2322 sym_hashes = elf_sym_hashes (input_bfd);
2323 local_got_offsets = elf_local_got_offsets (input_bfd);
2324
a85d7ed0
NC		 2325 rel = relocs;
2326 relend = relocs + input_section->reloc_count;
2327 for (; rel < relend; rel++)
2328 {
5236c819 2329 unsigned int r_type;
a85d7ed0
NC		 2330 reloc_howto_type *howto;
2331 unsigned long r_symndx;
2332 struct elf_link_hash_entry *h;
2333 Elf_Internal_Sym *sym;
2334 asection *sec;
0451c93c 2335 bfd_vma off;
a85d7ed0 2336 bfd_vma relocation;
b34976b6 2337 bfd_boolean unresolved_reloc;
a85d7ed0 2338 bfd_reloc_status_type r;
69fc87f1 2339 int tls_type;
470b557a 2340 asection *base_got = htab->elf.sgot;
ec338859 2341
a85d7ed0
NC		 2342 r_type = ELF32_R_TYPE (rel->r_info);
2343 if (r_type == (int) R_390_GNU_VTINHERIT
26e41594
AM		 2344 || r_type == (int) R_390_GNU_VTENTRY)
2345 continue;
5236c819 2346 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2347 {
2348 bfd_set_error (bfd_error_bad_value);
b34976b6 2349 return FALSE;
a85d7ed0 2350 }
ec338859 2351
b491616a 2352 howto = elf_howto_table + r_type;
a85d7ed0 2353 r_symndx = ELF32_R_SYM (rel->r_info);
5236c819 2354
a85d7ed0
NC		 2355 h = NULL;
2356 sym = NULL;
2357 sec = NULL;
b34976b6 2358 unresolved_reloc = FALSE;
a85d7ed0
NC		 2359 if (r_symndx < symtab_hdr->sh_info)
2360 {
2361 sym = local_syms + r_symndx;
2362 sec = local_sections[r_symndx];
470b557a
AK		 2363 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2364 {
2365 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2366 if (local_plt == NULL)
2367 return FALSE;
2368
2369 /* Address of the PLT slot. */
2370 relocation = (htab->elf.iplt->output_section->vma
2371 + htab->elf.iplt->output_offset
2372 + local_plt[r_symndx].plt.offset);
2373
2374 switch (r_type)
2375 {
31db78f6
AK		 2376 case R_390_PLTOFF16:
2377 case R_390_PLTOFF32:
2378 relocation -= htab->elf.sgot->output_section->vma;
2379 break;
470b557a
AK		 2380 case R_390_GOTPLT12:
2381 case R_390_GOTPLT16:
2382 case R_390_GOTPLT20:
2383 case R_390_GOTPLT32:
2384 case R_390_GOTPLTENT:
2385 case R_390_GOT12:
2386 case R_390_GOT16:
2387 case R_390_GOT20:
2388 case R_390_GOT32:
2389 case R_390_GOTENT:
2390 {
2391 /* Write the PLT slot address into the GOT slot. */
2392 bfd_put_32 (output_bfd, relocation,
2393 htab->elf.sgot->contents +
2394 local_got_offsets[r_symndx]);
2395 relocation = (local_got_offsets[r_symndx] +
2396 htab->elf.sgot->output_offset);
2397
2398 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2399 relocation += htab->elf.sgot->output_section->vma;
2400 break;
2401 }
2402 default:
2403 break;
2404 }
2405 /* The output section is needed later in
2406 finish_dynamic_section when creating the dynamic
2407 relocation. */
2408 local_plt[r_symndx].sec = sec;
2409 goto do_relocation;
2410 }
2411 else
2412 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2413 }
2414 else
2415 {
560e09e9 2416 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2417 bfd_boolean ignored ATTRIBUTE_UNUSED;
ec338859 2418
b2a8e766
AM		 2419 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2420 r_symndx, symtab_hdr, sym_hashes,
2421 h, sec, relocation,
62d887d4 2422 unresolved_reloc, warned, ignored);
a85d7ed0 2423 }
ec338859 2424
dbaa2011 2425 if (sec != NULL && discarded_section (sec))
e4067dbb 2426 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2427 rel, 1, relend, howto, 0, contents);
ab96bf03
AM		 2428
2429 if (info->relocatable)
2430 continue;
2431
a85d7ed0
NC		 2432 switch (r_type)
2433 {
5236c819
MS		 2434 case R_390_GOTPLT12:
2435 case R_390_GOTPLT16:
bd1ea41b 2436 case R_390_GOTPLT20:
5236c819
MS		 2437 case R_390_GOTPLT32:
2438 case R_390_GOTPLTENT:
2439 /* There are three cases for a GOTPLT relocation. 1) The
2440 relocation is against the jump slot entry of a plt that
2441 will get emitted to the output file. 2) The relocation
2442 is against the jump slot of a plt entry that has been
2443 removed. elf_s390_adjust_gotplt has created a GOT entry
2444 as replacement. 3) The relocation is against a local symbol.
2445 Cases 2) and 3) are the same as the GOT relocation code
2446 so we just have to test for case 1 and fall through for
2447 the other two. */
2448 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2449 {
2450 bfd_vma plt_index;
2451
470b557a
AK		 2452 if (s390_is_ifunc_symbol_p (h))
2453 {
2454 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2455 relocation = (plt_index * GOT_ENTRY_SIZE +
2456 htab->elf.igotplt->output_offset);
2457 if (r_type == R_390_GOTPLTENT)
2458 relocation += htab->elf.igotplt->output_section->vma;
2459 }
2460 else
2461 {
2462 /* Calc. index no.
2463 Current offset - size first entry / entry size. */
2464 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2465 PLT_ENTRY_SIZE;
2466
2467 /* Offset in GOT is PLT index plus GOT headers(3)
2468 times 4, addr & GOT addr. */
2469 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2470 if (r_type == R_390_GOTPLTENT)
2471 relocation += htab->elf.sgot->output_section->vma;
2472 }
5236c819
MS		 2473 unresolved_reloc = FALSE;
2474
5236c819
MS		 2475 }
2476 /* Fall through. */
2477
26e41594
AM		 2478 case R_390_GOT12:
2479 case R_390_GOT16:
bd1ea41b 2480 case R_390_GOT20:
26e41594 2481 case R_390_GOT32:
befc3abb 2482 case R_390_GOTENT:
26e41594
AM		 2483 /* Relocation is to the entry for this symbol in the global
2484 offset table. */
470b557a 2485 if (base_got == NULL)
0451c93c 2486 abort ();
ec338859 2487
26e41594
AM		 2488 if (h != NULL)
2489 {
b34976b6 2490 bfd_boolean dyn;
ec338859 2491
26e41594 2492 off = h->got.offset;
0451c93c 2493 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2494
2495 if (s390_is_ifunc_symbol_p (h))
2496 {
2497 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2498 if (off == (bfd_vma)-1)
2499 {
2500 /* No explicit GOT usage so redirect to the
2501 got.iplt slot. */
2502 base_got = htab->elf.igotplt;
2503 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2504 }
2505 else
2506 {
2507 /* Explicit GOT slots must contain the address
2508 of the PLT slot. This will be handled in
2509 finish_dynamic_symbol. */
2510 }
2511 }
2512 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2513 || (info->shared
2514 && SYMBOL_REFERENCES_LOCAL (info, h))
2515 || (ELF_ST_VISIBILITY (h->other)
2516 && h->root.type == bfd_link_hash_undefweak))
2517
26e41594
AM		 2518 {
2519 /* This is actually a static link, or it is a
2520 -Bsymbolic link and the symbol is defined
2521 locally, or the symbol was forced to be local
2522 because of a version file. We must initialize
2523 this entry in the global offset table. Since the
2524 offset must always be a multiple of 2, we use the
2525 least significant bit to record whether we have
2526 initialized it already.
2527
2528 When doing a dynamic link, we create a .rel.got
2529 relocation entry to initialize the value. This
2530 is done in the finish_dynamic_symbol routine. */
2531 if ((off & 1) != 0)
2532 off &= ~1;
2533 else
2534 {
a85d7ed0 2535 bfd_put_32 (output_bfd, relocation,
470b557a 2536 base_got->contents + off);
26e41594
AM		 2537 h->got.offset |= 1;
2538 }
a63cc5f7
AK		 2539
2540 if ((h->def_regular
2541 && info->shared
2542 && SYMBOL_REFERENCES_LOCAL (info, h))
2543 /* lrl rx,sym@GOTENT -> larl rx, sym */
2544 && ((r_type == R_390_GOTENT
2545 && (bfd_get_16 (input_bfd,
2546 contents + rel->r_offset - 2)
2547 & 0xff0f) == 0xc40d)
2548 /* ly rx, sym@GOT(r12) -> larl rx, sym */
2549 || (r_type == R_390_GOT20
2550 && (bfd_get_32 (input_bfd,
2551 contents + rel->r_offset - 2)
2552 & 0xff00f000) == 0xe300c000
2553 && bfd_get_8 (input_bfd,
2554 contents + rel->r_offset + 3) == 0x58)))
2555 {
2556 unsigned short new_insn =
2557 (0xc000 | (bfd_get_8 (input_bfd,
2558 contents + rel->r_offset - 1) & 0xf0));
2559 bfd_put_16 (output_bfd, new_insn,
2560 contents + rel->r_offset - 2);
2561 r_type = R_390_PC32DBL;
2562 rel->r_addend = 2;
2563 howto = elf_howto_table + r_type;
2564 relocation = h->root.u.def.value
2565 + h->root.u.def.section->output_section->vma
2566 + h->root.u.def.section->output_offset;
2567 goto do_relocation;
2568 }
26e41594 2569 }
0451c93c 2570 else
b34976b6 2571 unresolved_reloc = FALSE;
26e41594
AM		 2572 }
2573 else
2574 {
0451c93c
MS		 2575 if (local_got_offsets == NULL)
2576 abort ();
a85d7ed0 2577
26e41594 2578 off = local_got_offsets[r_symndx];
a85d7ed0 2579
26e41594
AM		 2580 /* The offset must always be a multiple of 4. We use
2581 the least significant bit to record whether we have
2582 already generated the necessary reloc. */
2583 if ((off & 1) != 0)
2584 off &= ~1;
2585 else
2586 {
2587 bfd_put_32 (output_bfd, relocation,
f41345a7 2588 htab->elf.sgot->contents + off);
a85d7ed0 2589
26e41594
AM		 2590 if (info->shared)
2591 {
2592 asection *srelgot;
2593 Elf_Internal_Rela outrel;
947216bf 2594 bfd_byte *loc;
a85d7ed0 2595
f41345a7 2596 srelgot = htab->elf.srelgot;
0451c93c
MS		 2597 if (srelgot == NULL)
2598 abort ();
a85d7ed0 2599
f41345a7
AK		 2600 outrel.r_offset = (htab->elf.sgot->output_section->vma
2601 + htab->elf.sgot->output_offset
26e41594
AM		 2602 + off);
2603 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2604 outrel.r_addend = relocation;
947216bf
AM		 2605 loc = srelgot->contents;
2606 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
26e41594
AM		 2607 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2608 }
a85d7ed0 2609
26e41594
AM		 2610 local_got_offsets[r_symndx] |= 1;
2611 }
2612 }
a85d7ed0 2613
0451c93c
MS		 2614 if (off >= (bfd_vma) -2)
2615 abort ();
a85d7ed0 2616
470b557a 2617 relocation = base_got->output_offset + off;
befc3abb 2618
ae9a127f
NC		 2619 /* For @GOTENT the relocation is against the offset between
2620 the instruction and the symbols entry in the GOT and not
2621 between the start of the GOT and the symbols entry. We
2622 add the vma of the GOT to get the correct value. */
5236c819
MS		 2623 if ( r_type == R_390_GOTENT
2624 || r_type == R_390_GOTPLTENT)
470b557a 2625 relocation += base_got->output_section->vma;
befc3abb 2626
26e41594 2627 break;
dc810e39 2628
5236c819 2629 case R_390_GOTOFF16:
26e41594
AM		 2630 case R_390_GOTOFF32:
2631 /* Relocation is relative to the start of the global offset
2632 table. */
2633
2634 /* Note that sgot->output_offset is not involved in this
2635 calculation. We always want the start of .got. If we
2636 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2637 permitted by the ABI, we might have to change this
2638 calculation. */
f41345a7 2639 relocation -= htab->elf.sgot->output_section->vma;
26e41594
AM		 2640 break;
2641
2642 case R_390_GOTPC:
befc3abb 2643 case R_390_GOTPCDBL:
26e41594 2644 /* Use global offset table as symbol value. */
f41345a7 2645 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2646 unresolved_reloc = FALSE;
26e41594 2647 break;
a85d7ed0 2648
fb798c50 2649 case R_390_PLT12DBL:
26e41594 2650 case R_390_PLT16DBL:
fb798c50 2651 case R_390_PLT24DBL:
26e41594
AM		 2652 case R_390_PLT32DBL:
2653 case R_390_PLT32:
2654 /* Relocation is to the entry for this symbol in the
2655 procedure linkage table. */
a85d7ed0 2656
26e41594
AM		 2657 /* Resolve a PLT32 reloc against a local symbol directly,
2658 without using the procedure linkage table. */
2659 if (h == NULL)
2660 break;
a85d7ed0 2661
26e41594 2662 if (h->plt.offset == (bfd_vma) -1
470b557a 2663 || (htab->elf.splt == NULL && htab->elf.iplt == NULL))
26e41594
AM		 2664 {
2665 /* We didn't make a PLT entry for this symbol. This
2666 happens when statically linking PIC code, or when
2667 using -Bsymbolic. */
2668 break;
2669 }
2670
470b557a
AK		 2671 if (s390_is_ifunc_symbol_p (h))
2672 relocation = (htab->elf.iplt->output_section->vma
2673 + htab->elf.iplt->output_offset
2674 + h->plt.offset);
2675 else
2676 relocation = (htab->elf.splt->output_section->vma
2677 + htab->elf.splt->output_offset
2678 + h->plt.offset);
b34976b6 2679 unresolved_reloc = FALSE;
26e41594 2680 break;
a85d7ed0 2681
5236c819
MS		 2682 case R_390_PLTOFF16:
2683 case R_390_PLTOFF32:
26e41594
AM		 2684 /* Relocation is to the entry for this symbol in the
2685 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2686
2687 /* For local symbols or if we didn't make a PLT entry for
2688 this symbol resolve the symbol directly. */
31db78f6 2689 if (h == NULL
5236c819 2690 || h->plt.offset == (bfd_vma) -1
31db78f6 2691 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2692 {
f41345a7 2693 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS		 2694 break;
2695 }
2696
470b557a
AK		 2697 if (s390_is_ifunc_symbol_p (h))
2698 relocation = (htab->elf.iplt->output_section->vma
2699 + htab->elf.iplt->output_offset
2700 + h->plt.offset
2701 - htab->elf.sgot->output_section->vma);
2702 else
2703 relocation = (htab->elf.splt->output_section->vma
2704 + htab->elf.splt->output_offset
2705 + h->plt.offset
2706 - htab->elf.sgot->output_section->vma);
5236c819 2707 unresolved_reloc = FALSE;
26e41594
AM		 2708 break;
2709
2710 case R_390_8:
2711 case R_390_16:
2712 case R_390_32:
2713 case R_390_PC16:
fb798c50 2714 case R_390_PC12DBL:
26e41594 2715 case R_390_PC16DBL:
fb798c50 2716 case R_390_PC24DBL:
26e41594
AM		 2717 case R_390_PC32DBL:
2718 case R_390_PC32:
470b557a
AK		 2719 if (h != NULL
2720 && s390_is_ifunc_symbol_p (h)
2721 && h->def_regular)
2722 {
2723 if (!info->shared || !h->non_got_ref)
2724 {
2725 /* For a non-shared object STT_GNU_IFUNC symbol must
2726 go through PLT. */
2727 relocation = (htab->elf.iplt->output_section->vma
2728 + htab->elf.iplt->output_offset
2729 + h ->plt.offset);
2730 goto do_relocation;
2731 }
2732 else
2733 {
2734 /* For shared objects a runtime relocation is needed. */
2735
2736 Elf_Internal_Rela outrel;
2737 asection *sreloc;
2738
2739 /* Need a dynamic relocation to get the real function
2740 address. */
2741 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2742 info,
2743 input_section,
2744 rel->r_offset);
2745 if (outrel.r_offset == (bfd_vma) -1
2746 || outrel.r_offset == (bfd_vma) -2)
2747 abort ();
2748
2749 outrel.r_offset += (input_section->output_section->vma
2750 + input_section->output_offset);
2751
2752 if (h->dynindx == -1
2753 || h->forced_local
2754 || info->executable)
2755 {
2756 /* This symbol is resolved locally. */
2757 outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
2758 outrel.r_addend = (h->root.u.def.value
2759 + h->root.u.def.section->output_section->vma
2760 + h->root.u.def.section->output_offset);
2761 }
2762 else
2763 {
2764 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2765 outrel.r_addend = 0;
2766 }
2767
2768 sreloc = htab->elf.irelifunc;
2769 elf_append_rela (output_bfd, sreloc, &outrel);
2770
2771 /* If this reloc is against an external symbol, we
2772 do not want to fiddle with the addend. Otherwise,
2773 we need to include the symbol value so that it
2774 becomes an addend for the dynamic reloc. For an
2775 internal symbol, we have updated addend. */
2776 continue;
2777 }
2778 }
2779
b1e24c02 2780 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2781 break;
2782
26e41594 2783 if ((info->shared
82058a73
MS		 2784 && (h == NULL
2785 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2786 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2787 && ((r_type != R_390_PC16
fb798c50 2788 && r_type != R_390_PC12DBL
0451c93c 2789 && r_type != R_390_PC16DBL
fb798c50 2790 && r_type != R_390_PC24DBL
befc3abb 2791 && r_type != R_390_PC32DBL
0451c93c 2792 && r_type != R_390_PC32)
8c21ca21 2793 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810
MS		 2794 || (ELIMINATE_COPY_RELOCS
2795 && !info->shared
0451c93c
MS		 2796 && h != NULL
2797 && h->dynindx != -1
f5385ebf
AM		 2798 && !h->non_got_ref
2799 && ((h->def_dynamic
2800 && !h->def_regular)
0451c93c
MS		 2801 || h->root.type == bfd_link_hash_undefweak
2802 || h->root.type == bfd_link_hash_undefined)))
26e41594
AM		 2803 {
2804 Elf_Internal_Rela outrel;
2805 bfd_boolean skip, relocate;
0451c93c 2806 asection *sreloc;
947216bf 2807 bfd_byte *loc;
ec338859 2808
0451c93c
MS		 2809 /* When generating a shared object, these relocations
2810 are copied into the output file to be resolved at run
2811 time. */
ec338859 2812
26e41594
AM		 2813 skip = FALSE;
2814 relocate = FALSE;
ec338859 2815
c629eae0
JJ		 2816 outrel.r_offset =
2817 _bfd_elf_section_offset (output_bfd, info, input_section,
2818 rel->r_offset);
2819 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2820 skip = TRUE;
0bb2d96a 2821 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2822 skip = TRUE, relocate = TRUE;
26e41594
AM		 2823 outrel.r_offset += (input_section->output_section->vma
2824 + input_section->output_offset);
ec338859 2825
26e41594 2826 if (skip)
0bb2d96a 2827 memset (&outrel, 0, sizeof outrel);
26e41594 2828 else if (h != NULL
0451c93c
MS		 2829 && h->dynindx != -1
2830 && (r_type == R_390_PC16
fb798c50 2831 || r_type == R_390_PC12DBL
0451c93c 2832 || r_type == R_390_PC16DBL
fb798c50 2833 || r_type == R_390_PC24DBL
befc3abb 2834 || r_type == R_390_PC32DBL
0451c93c
MS		 2835 || r_type == R_390_PC32
2836 || !info->shared
8c21ca21 2837 || !SYMBOLIC_BIND (info, h)
f5385ebf 2838 || !h->def_regular))
26e41594
AM		 2839 {
2840 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
27018c3f 2841 outrel.r_addend = rel->r_addend;
26e41594
AM		 2842 }
2843 else
2844 {
0451c93c 2845 /* This symbol is local, or marked to become local. */
90ced0dd 2846 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2847 if (r_type == R_390_32)
2848 {
2849 relocate = TRUE;
2850 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2851 }
2852 else
2853 {
2854 long sindx;
2855
90ced0dd 2856 if (bfd_is_abs_section (sec))
b5727d75
MS		 2857 sindx = 0;
2858 else if (sec == NULL || sec->owner == NULL)
2859 {
2860 bfd_set_error(bfd_error_bad_value);
2861 return FALSE;
2862 }
2863 else
2864 {
2865 asection *osec;
2866
2867 osec = sec->output_section;
2868 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2869 if (sindx == 0)
2870 {
2871 osec = htab->elf.text_index_section;
2872 sindx = elf_section_data (osec)->dynindx;
2873 }
2874 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2875
2876 /* We are turning this relocation into one
2877 against a section symbol, so subtract out
2878 the output section's address but not the
2879 offset of the input section in the output
2880 section. */
90ced0dd 2881 outrel.r_addend -= osec->vma;
b5727d75
MS		 2882 }
2883 outrel.r_info = ELF32_R_INFO (sindx, r_type);
b5727d75 2884 }
26e41594 2885 }
ec338859 2886
0451c93c
MS		 2887 sreloc = elf_section_data (input_section)->sreloc;
2888 if (sreloc == NULL)
2889 abort ();
ec338859 2890
947216bf
AM		 2891 loc = sreloc->contents;
2892 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 2893 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
ec338859 2894
26e41594
AM		 2895 /* If this reloc is against an external symbol, we do
2896 not want to fiddle with the addend. Otherwise, we
2897 need to include the symbol value so that it becomes
2898 an addend for the dynamic reloc. */
2899 if (! relocate)
2900 continue;
2901 }
0451c93c 2902 break;
ec338859 2903
69fc87f1
MS		 2904 /* Relocations for tls literal pool entries. */
2905 case R_390_TLS_IE32:
2906 if (info->shared)
2907 {
2908 Elf_Internal_Rela outrel;
2909 asection *sreloc;
2910 bfd_byte *loc;
2911
2912 outrel.r_offset = rel->r_offset
2913 + input_section->output_section->vma
2914 + input_section->output_offset;
2915 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2916 sreloc = elf_section_data (input_section)->sreloc;
2917 if (sreloc == NULL)
2918 abort ();
2919 loc = sreloc->contents;
2920 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2921 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2922 }
ae9a127f 2923 /* Fall through. */
69fc87f1
MS		 2924
2925 case R_390_TLS_GD32:
2926 case R_390_TLS_GOTIE32:
2927 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2928 tls_type = GOT_UNKNOWN;
2929 if (h == NULL && local_got_offsets)
2930 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2931 else if (h != NULL)
2932 {
2933 tls_type = elf_s390_hash_entry(h)->tls_type;
2934 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2935 r_type = R_390_TLS_LE32;
2936 }
2937 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2938 r_type = R_390_TLS_IE32;
2939
2940 if (r_type == R_390_TLS_LE32)
2941 {
2942 /* This relocation gets optimized away by the local exec
2943 access optimization. */
2944 BFD_ASSERT (! unresolved_reloc);
2945 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2946 contents + rel->r_offset);
2947 continue;
2948 }
2949
f41345a7 2950 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2951 abort ();
2952
2953 if (h != NULL)
2954 off = h->got.offset;
2955 else
2956 {
2957 if (local_got_offsets == NULL)
2958 abort ();
2959
2960 off = local_got_offsets[r_symndx];
2961 }
2962
2963 emit_tls_relocs:
2964
2965 if ((off & 1) != 0)
2966 off &= ~1;
26e41594 2967 else
69fc87f1
MS		 2968 {
2969 Elf_Internal_Rela outrel;
2970 bfd_byte *loc;
2971 int dr_type, indx;
2972
f41345a7 2973 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2974 abort ();
2975
f41345a7
AK		 2976 outrel.r_offset = (htab->elf.sgot->output_section->vma
2977 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2978
2979 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2980 if (r_type == R_390_TLS_GD32)
2981 dr_type = R_390_TLS_DTPMOD;
2982 else
2983 dr_type = R_390_TLS_TPOFF;
2984 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2985 outrel.r_addend = relocation - dtpoff_base (info);
2986 else
2987 outrel.r_addend = 0;
2988 outrel.r_info = ELF32_R_INFO (indx, dr_type);
f41345a7
AK		 2989 loc = htab->elf.srelgot->contents;
2990 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2991 * sizeof (Elf32_External_Rela);
2992 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2993
2994 if (r_type == R_390_TLS_GD32)
2995 {
2996 if (indx == 0)
2997 {
26e41594 2998 BFD_ASSERT (! unresolved_reloc);
69fc87f1
MS		 2999 bfd_put_32 (output_bfd,
3000 relocation - dtpoff_base (info),
f41345a7 3001 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3002 }
3003 else
3004 {
3005 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
3006 outrel.r_offset += GOT_ENTRY_SIZE;
3007 outrel.r_addend = 0;
f41345a7 3008 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 3009 loc += sizeof (Elf32_External_Rela);
3010 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3011 }
3012 }
3013
3014 if (h != NULL)
3015 h->got.offset |= 1;
3016 else
3017 local_got_offsets[r_symndx] |= 1;
3018 }
3019
3020 if (off >= (bfd_vma) -2)
3021 abort ();
3022 if (r_type == ELF32_R_TYPE (rel->r_info))
3023 {
f41345a7 3024 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3025 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
f41345a7 3026 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3027 unresolved_reloc = FALSE;
3028 }
3029 else
3030 {
f41345a7 3031 bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 3032 contents + rel->r_offset);
3033 continue;
3034 }
3035 break;
3036
3037 case R_390_TLS_GOTIE12:
bd1ea41b 3038 case R_390_TLS_GOTIE20:
69fc87f1
MS		 3039 case R_390_TLS_IEENT:
3040 if (h == NULL)
3041 {
3042 if (local_got_offsets == NULL)
3043 abort();
3044 off = local_got_offsets[r_symndx];
3045 if (info->shared)
3046 goto emit_tls_relocs;
3047 }
3048 else
3049 {
3050 off = h->got.offset;
3051 tls_type = elf_s390_hash_entry(h)->tls_type;
3052 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
3053 goto emit_tls_relocs;
3054 }
3055
f41345a7 3056 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3057 abort ();
3058
3059 BFD_ASSERT (! unresolved_reloc);
3060 bfd_put_32 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 3061 htab->elf.sgot->contents + off);
3062 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3063 if (r_type == R_390_TLS_IEENT)
f41345a7 3064 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3065 unresolved_reloc = FALSE;
3066 break;
3067
3068 case R_390_TLS_LDM32:
3069 if (! info->shared)
3070 /* The literal pool entry this relocation refers to gets ignored
3071 by the optimized code of the local exec model. Do nothing
3072 and the value will turn out zero. */
3073 continue;
3074
f41345a7 3075 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3076 abort ();
3077
3078 off = htab->tls_ldm_got.offset;
3079 if (off & 1)
3080 off &= ~1;
3081 else
3082 {
3083 Elf_Internal_Rela outrel;
3084 bfd_byte *loc;
3085
f41345a7 3086 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 3087 abort ();
3088
f41345a7
AK		 3089 outrel.r_offset = (htab->elf.sgot->output_section->vma
3090 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 3091
3092 bfd_put_32 (output_bfd, 0,
f41345a7 3093 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3094 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
3095 outrel.r_addend = 0;
f41345a7
AK		 3096 loc = htab->elf.srelgot->contents;
3097 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3098 * sizeof (Elf32_External_Rela);
3099 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3100 htab->tls_ldm_got.offset |= 1;
3101 }
f41345a7 3102 relocation = htab->elf.sgot->output_offset + off;
26e41594 3103 unresolved_reloc = FALSE;
69fc87f1
MS		 3104 break;
3105
3106 case R_390_TLS_LE32:
3107 if (info->shared)
3108 {
3109 /* Linking a shared library with non-fpic code requires
3110 a R_390_TLS_TPOFF relocation. */
3111 Elf_Internal_Rela outrel;
3112 asection *sreloc;
3113 bfd_byte *loc;
3114 int indx;
3115
3116 outrel.r_offset = rel->r_offset
3117 + input_section->output_section->vma
3118 + input_section->output_offset;
3119 if (h != NULL && h->dynindx != -1)
3120 indx = h->dynindx;
3121 else
3122 indx = 0;
3123 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
3124 if (indx == 0)
3125 outrel.r_addend = relocation - dtpoff_base (info);
3126 else
3127 outrel.r_addend = 0;
3128 sreloc = elf_section_data (input_section)->sreloc;
3129 if (sreloc == NULL)
3130 abort ();
3131 loc = sreloc->contents;
3132 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3133 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3134 }
3135 else
3136 {
3137 BFD_ASSERT (! unresolved_reloc);
3138 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3139 contents + rel->r_offset);
3140 }
3141 continue;
3142
3143 case R_390_TLS_LDO32:
de8bee76 3144 if (info->shared || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 3145 relocation -= dtpoff_base (info);
3146 else
3147 /* When converting LDO to LE, we must negate. */
3148 relocation = -tpoff (info, relocation);
3149 break;
3150
3151 /* Relocations for tls instructions. */
3152 case R_390_TLS_LOAD:
3153 case R_390_TLS_GDCALL:
3154 case R_390_TLS_LDCALL:
3155 tls_type = GOT_UNKNOWN;
3156 if (h == NULL && local_got_offsets)
3157 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3158 else if (h != NULL)
3159 tls_type = elf_s390_hash_entry(h)->tls_type;
3160
3161 if (tls_type == GOT_TLS_GD)
3162 continue;
3163
3164 if (r_type == R_390_TLS_LOAD)
3165 {
3166 if (!info->shared && (h == NULL || h->dynindx == -1))
3167 {
3168 /* IE->LE transition. Four valid cases:
3169 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
3170 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
3171 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
3172 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3173 unsigned int insn, ry;
3174
3175 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3176 ry = 0;
3177 if ((insn & 0xff00f000) == 0x58000000)
3178 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
3179 ry = (insn & 0x000f0000);
3180 else if ((insn & 0xff0f0000) == 0x58000000)
3181 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
3182 ry = (insn & 0x0000f000) << 4;
3183 else if ((insn & 0xff00f000) == 0x5800c000)
3184 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
3185 ry = (insn & 0x000f0000);
3186 else if ((insn & 0xff0f0000) == 0x580c0000)
3187 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3188 ry = (insn & 0x0000f000) << 4;
3189 else
3190 invalid_tls_insn (input_bfd, input_section, rel);
3191 insn = 0x18000700 | (insn & 0x00f00000) | ry;
3192 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3193 }
3194 }
3195 else if (r_type == R_390_TLS_GDCALL)
3196 {
3197 unsigned int insn;
3198
3199 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3200 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 3201 (insn & 0xffff0000) != 0xc0e50000 &&
3202 (insn & 0xff000000) != 0x0d000000)
69fc87f1
MS		 3203 invalid_tls_insn (input_bfd, input_section, rel);
3204 if (!info->shared && (h == NULL || h->dynindx == -1))
77df2968 3205 {
d0ddfe27
AK		 3206 if ((insn & 0xff000000) == 0x0d000000)
3207 {
3208 /* GD->LE transition.
3209 basr rx, ry -> nopr r7 */
3210 insn = 0x07070000 | (insn & 0xffff);
3211 }
3212 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 3213 {
3214 /* GD->LE transition.
3215 bas %r14,0(%rx,%r13) -> bc 0,0 */
3216 insn = 0x47000000;
3217 }
3218 else
3219 {
3220 /* GD->LE transition.
d0ddfe27 3221 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 3222 insn = 0xc0040000;
3223 bfd_put_16 (output_bfd, 0x0000,
3224 contents + rel->r_offset + 4);
3225 }
3226 }
69fc87f1 3227 else
77df2968 3228 {
d0ddfe27
AK		 3229 /* If basr is used in the pic case to invoke
3230 _tls_get_offset, something went wrong before. */
3231 if ((insn & 0xff000000) == 0x0d000000)
3232 invalid_tls_insn (input_bfd, input_section, rel);
3233
77df2968
MS		 3234 if ((insn & 0xff000000) == 0x4d000000)
3235 {
3236 /* GD->IE transition.
3237 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3238 insn = 0x5822c000;
3239 }
3240 else
3241 {
3242 /* GD->IE transition.
3243 brasl %r14,__tls_get_addr@plt ->
3244 l %r2,0(%r2,%r12) ; bcr 0,0 */
3245 insn = 0x5822c000;
3246 bfd_put_16 (output_bfd, 0x0700,
3247 contents + rel->r_offset + 4);
3248 }
3249 }
69fc87f1
MS		 3250 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3251 }
3252 else if (r_type == R_390_TLS_LDCALL)
3253 {
3254 if (!info->shared)
3255 {
3256 unsigned int insn;
3257
3258 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3259 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 3260 (insn & 0xffff0000) != 0xc0e50000 &&
3261 (insn & 0xff000000) != 0x0d000000)
69fc87f1 3262 invalid_tls_insn (input_bfd, input_section, rel);
d0ddfe27
AK		 3263
3264 if ((insn & 0xff000000) == 0x0d000000)
3265 {
3266 /* LD->LE transition.
3267 basr rx, ry -> nopr r7 */
3268 insn = 0x07070000 | (insn & 0xffff);
3269 }
3270 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 3271 {
3272 /* LD->LE transition.
3273 bas %r14,0(%rx,%r13) -> bc 0,0 */
3274 insn = 0x47000000;
3275 }
3276 else
3277 {
3278 /* LD->LE transition.
d0ddfe27 3279 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 3280 insn = 0xc0040000;
3281 bfd_put_16 (output_bfd, 0x0000,
3282 contents + rel->r_offset + 4);
3283 }
69fc87f1
MS		 3284 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3285 }
3286 }
3287 continue;
3288
0451c93c
MS		 3289 default:
3290 break;
3291 }
ec338859 3292
239e1f3a
AM		 3293 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3294 because such sections are not SEC_ALLOC and thus ld.so will
3295 not process them. */
0451c93c 3296 if (unresolved_reloc
239e1f3a 3297 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3298 && h->def_dynamic)
3299 && _bfd_elf_section_offset (output_bfd, info, input_section,
3300 rel->r_offset) != (bfd_vma) -1)
0451c93c 3301 (*_bfd_error_handler)
843fe662 3302 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3303 input_bfd,
3304 input_section,
0451c93c 3305 (long) rel->r_offset,
843fe662 3306 howto->name,
0451c93c 3307 h->root.root.string);
ec338859 3308
470b557a
AK		 3309 do_relocation:
3310
fb798c50
AK		 3311 /* When applying a 24 bit reloc we need to start one byte
3312 earlier. Otherwise the 32 bit get/put bfd operations might
3313 access a byte after the actual section. */
3314 if (r_type == R_390_PC24DBL
3315 || r_type == R_390_PLT24DBL)
3316 rel->r_offset--;
3317
bd1ea41b
MS		 3318 if (r_type == R_390_20
3319 || r_type == R_390_GOT20
3320 || r_type == R_390_GOTPLT20
3321 || r_type == R_390_TLS_GOTIE20)
3322 {
3323 relocation += rel->r_addend;
3324 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3325 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3326 contents, rel->r_offset,
3327 relocation, 0);
3328 }
3329 else
3330 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3331 contents, rel->r_offset,
3332 relocation, rel->r_addend);
ec338859 3333
a85d7ed0
NC		 3334 if (r != bfd_reloc_ok)
3335 {
0451c93c 3336 const char *name;
ec338859 3337
0451c93c
MS		 3338 if (h != NULL)
3339 name = h->root.root.string;
3340 else
a85d7ed0 3341 {
0451c93c
MS		 3342 name = bfd_elf_string_from_elf_section (input_bfd,
3343 symtab_hdr->sh_link,
3344 sym->st_name);
3345 if (name == NULL)
b34976b6 3346 return FALSE;
0451c93c
MS		 3347 if (*name == '\0')
3348 name = bfd_section_name (input_bfd, sec);
3349 }
ec338859 3350
0451c93c
MS		 3351 if (r == bfd_reloc_overflow)
3352 {
ec338859 3353
0451c93c 3354 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 3355 (info, (h ? &h->root : NULL), name, howto->name,
3356 (bfd_vma) 0, input_bfd, input_section,
3357 rel->r_offset)))
b34976b6 3358 return FALSE;
0451c93c
MS		 3359 }
3360 else
3361 {
3362 (*_bfd_error_handler)
d003868e
AM		 3363 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3364 input_bfd, input_section,
0451c93c 3365 (long) rel->r_offset, name, (int) r);
b34976b6 3366 return FALSE;
a85d7ed0
NC		 3367 }
3368 }
3369 }
ec338859 3370
b34976b6 3371 return TRUE;
a85d7ed0
NC		 3372}
3373
470b557a
AK		 3374/* Generate the PLT slots together with the dynamic relocations needed
3375 for IFUNC symbols. */
3376
3377static void
3378elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3379 struct bfd_link_info *info,
3380 struct elf_link_hash_entry *h,
3381 struct elf_s390_link_hash_table *htab,
3382 bfd_vma iplt_offset,
3383 bfd_vma resolver_address)
3384{
3385 bfd_vma iplt_index;
3386 bfd_vma got_offset;
3387 bfd_vma igotiplt_offset;
3388 Elf_Internal_Rela rela;
3389 bfd_byte *loc;
3390 asection *plt, *gotplt, *relplt;
3391 bfd_vma relative_offset;
3392
3393 if (htab->elf.iplt == NULL
3394 || htab->elf.igotplt == NULL
3395 || htab->elf.irelplt == NULL)
3396 abort ();
3397
3398 gotplt = htab->elf.igotplt;
3399 relplt = htab->elf.irelplt;
3400
3401 /* Index of the PLT slot within iplt section. */
3402 iplt_index = iplt_offset / PLT_ENTRY_SIZE;
3403 plt = htab->elf.iplt;
3404 /* Offset into the igot.plt section. */
3405 igotiplt_offset = iplt_index * GOT_ENTRY_SIZE;
3406 /* Offset into the got section. */
3407 got_offset = igotiplt_offset + gotplt->output_offset;
3408
3409 /* S390 uses halfwords for relative branch calc! */
3410 relative_offset = - (plt->output_offset +
3411 (PLT_ENTRY_SIZE * iplt_index) + 18) / 2;
3412/* If offset is > 32768, branch to a previous branch
3413 390 can only handle +-64 K jumps. */
3414 if ( -32768 > (int) relative_offset )
3415 relative_offset
3416 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3417
3418 /* Fill in the entry in the procedure linkage table. */
3419 if (!info->shared)
3420 {
3421 memcpy (plt->contents + iplt_offset, elf_s390_plt_entry,
3422 PLT_ENTRY_SIZE);
3423
3424 /* Adjust jump to the first plt entry. */
3425 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3426 plt->contents + iplt_offset + 20);
3427
3428 /* Push the GOT offset field. */
3429 bfd_put_32 (output_bfd,
3430 (gotplt->output_section->vma
3431 + got_offset),
3432 plt->contents + iplt_offset + 24);
3433 }
3434 else if (got_offset < 4096)
3435 {
3436 /* The GOT offset is small enough to be used directly as
3437 displacement. */
3438 memcpy (plt->contents + iplt_offset,
3439 elf_s390_plt_pic12_entry,
3440 PLT_ENTRY_SIZE);
3441
3442 /* Put in the GOT offset as displacement value. The 0xc000
3443 value comes from the first word of the plt entry. Look
3444 at the elf_s390_plt_pic16_entry content. */
3445 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3446 plt->contents + iplt_offset + 2);
3447
3448 /* Adjust the jump to the first plt entry. */
3449 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3450 plt->contents + iplt_offset + 20);
3451 }
3452 else if (got_offset < 32768)
3453 {
3454 /* The GOT offset is too big for a displacement but small
3455 enough to be a signed 16 bit immediate value as it can be
3456 used in an lhi instruction. */
3457 memcpy (plt->contents + iplt_offset,
3458 elf_s390_plt_pic16_entry,
3459 PLT_ENTRY_SIZE);
3460
3461 /* Put in the GOT offset for the lhi instruction. */
3462 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3463 plt->contents + iplt_offset + 2);
3464
3465 /* Adjust the jump to the first plt entry. */
3466 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3467 plt->contents + iplt_offset + 20);
3468 }
3469 else
3470 {
3471 memcpy (plt->contents + iplt_offset,
3472 elf_s390_plt_pic_entry,
3473 PLT_ENTRY_SIZE);
3474
3475 /* Adjust the jump to the first plt entry. */
3476 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3477 plt->contents + iplt_offset + 20);
3478
3479 /* Push the GOT offset field. */
3480 bfd_put_32 (output_bfd, got_offset,
3481 plt->contents + iplt_offset + 24);
3482 }
3483 /* Insert offset into reloc. table here. */
3484 bfd_put_32 (output_bfd, relplt->output_offset +
3485 iplt_index * RELA_ENTRY_SIZE,
3486 plt->contents + iplt_offset + 28);
3487
3488 /* Fill in the entry in the global offset table.
3489 Points to instruction after GOT offset. */
3490 bfd_put_32 (output_bfd,
3491 (plt->output_section->vma
3492 + plt->output_offset
3493 + iplt_offset
3494 + 12),
3495 gotplt->contents + igotiplt_offset);
3496
3497 /* Fill in the entry in the .rela.plt section. */
3498 rela.r_offset = gotplt->output_section->vma + got_offset;
3499
3500 if (!h
3501 || h->dynindx == -1
3502 || ((info->executable
3503 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3504 && h->def_regular))
3505 {
3506 /* The symbol can be locally resolved. */
3507 rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
3508 rela.r_addend = resolver_address;
3509 }
3510 else
3511 {
3512 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3513 rela.r_addend = 0;
3514 }
3515
3516 loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE;
3517 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3518}
3519
a85d7ed0
NC		 3520/* Finish up dynamic symbol handling. We set the contents of various
3521 dynamic sections here. */
3522
b34976b6 3523static bfd_boolean
2c3fc389
NC		 3524elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3525 struct bfd_link_info *info,
3526 struct elf_link_hash_entry *h,
3527 Elf_Internal_Sym *sym)
a85d7ed0 3528{
0451c93c 3529 struct elf_s390_link_hash_table *htab;
470b557a 3530 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
ec338859 3531
0451c93c 3532 htab = elf_s390_hash_table (info);
ec338859 3533
a85d7ed0
NC		 3534 if (h->plt.offset != (bfd_vma) -1)
3535 {
0451c93c
MS		 3536 bfd_vma plt_index;
3537 bfd_vma got_offset;
a85d7ed0 3538 Elf_Internal_Rela rela;
947216bf 3539 bfd_byte *loc;
a85d7ed0 3540 bfd_vma relative_offset;
ec338859 3541
a85d7ed0 3542 /* This symbol has an entry in the procedure linkage table. Set
26e41594 3543 it up. */
470b557a 3544 if (s390_is_ifunc_symbol_p (h))
0451c93c 3545 {
470b557a
AK		 3546 /* If we can resolve the IFUNC symbol locally we generate an
3547 IRELATIVE reloc. */
3548 elf_s390_finish_ifunc_symbol (output_bfd, info, h, htab, h->plt.offset,
3549 eh->ifunc_resolver_address +
3550 eh->ifunc_resolver_section->output_offset +
3551 eh->ifunc_resolver_section->output_section->vma);
3552 /* Fallthrough. Handling of explicit GOT slots of IFUNC
3553 symbols is below. */
0451c93c 3554 }
a85d7ed0 3555 else
0451c93c 3556 {
470b557a
AK		 3557 if (h->dynindx == -1
3558 || htab->elf.splt == NULL
3559 || htab->elf.sgotplt == NULL
3560 || htab->elf.srelplt == NULL)
3561 abort ();
9aa17453 3562
470b557a
AK		 3563 /* Calc. index no.
3564 Current offset - size first entry / entry size. */
3565 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9aa17453 3566
470b557a
AK		 3567 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3568 addr & GOT addr. */
3569 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3570
470b557a
AK		 3571 /* S390 uses halfwords for relative branch calc! */
3572 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3573 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3574 /* If offset is > 32768, branch to a previous branch
3575 390 can only handle +-64 K jumps. */
3576 if ( -32768 > (int) relative_offset )
3577 relative_offset
3578 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
ec338859 3579
470b557a
AK		 3580 /* Fill in the entry in the procedure linkage table. */
3581 if (!info->shared)
3582 {
3583 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry,
3584 PLT_ENTRY_SIZE);
3585
3586 /* Adjust jump to the first plt entry. */
3587 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3588 htab->elf.splt->contents + h->plt.offset + 20);
3589
3590 /* Push the GOT offset field. */
3591 bfd_put_32 (output_bfd,
3592 (htab->elf.sgotplt->output_section->vma
3593 + htab->elf.sgotplt->output_offset
3594 + got_offset),
3595 htab->elf.splt->contents + h->plt.offset + 24);
3596 }
3597 else if (got_offset < 4096)
3598 {
3599 /* The GOT offset is small enough to be used directly as
3600 displacement. */
3601 memcpy (htab->elf.splt->contents + h->plt.offset,
3602 elf_s390_plt_pic12_entry,
3603 PLT_ENTRY_SIZE);
3604
3605 /* Put in the GOT offset as displacement value. The 0xc000
3606 value comes from the first word of the plt entry. Look
3607 at the elf_s390_plt_pic16_entry content. */
3608 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3609 htab->elf.splt->contents + h->plt.offset + 2);
3610
3611 /* Adjust the jump to the first plt entry. */
3612 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3613 htab->elf.splt->contents + h->plt.offset + 20);
3614 }
3615 else if (got_offset < 32768)
3616 {
3617 /* The GOT offset is too big for a displacement but small
3618 enough to be a signed 16 bit immediate value as it can be
3619 used in an lhi instruction. */
3620 memcpy (htab->elf.splt->contents + h->plt.offset,
3621 elf_s390_plt_pic16_entry,
3622 PLT_ENTRY_SIZE);
3623
3624 /* Put in the GOT offset for the lhi instruction. */
3625 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3626 htab->elf.splt->contents + h->plt.offset + 2);
3627
3628 /* Adjust the jump to the first plt entry. */
3629 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3630 htab->elf.splt->contents + h->plt.offset + 20);
3631 }
3632 else
3633 {
3634 memcpy (htab->elf.splt->contents + h->plt.offset,
3635 elf_s390_plt_pic_entry,
3636 PLT_ENTRY_SIZE);
3637
3638 /* Adjust the jump to the first plt entry. */
3639 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3640 htab->elf.splt->contents + h->plt.offset + 20);
3641
3642 /* Push the GOT offset field. */
3643 bfd_put_32 (output_bfd, got_offset,
3644 htab->elf.splt->contents + h->plt.offset + 24);
3645 }
3646 /* Insert offset into reloc. table here. */
3647 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3648 htab->elf.splt->contents + h->plt.offset + 28);
3649
3650 /* Fill in the entry in the global offset table.
3651 Points to instruction after GOT offset. */
3652 bfd_put_32 (output_bfd,
3653 (htab->elf.splt->output_section->vma
3654 + htab->elf.splt->output_offset
3655 + h->plt.offset
3656 + 12),
3657 htab->elf.sgotplt->contents + got_offset);
3658
3659 /* Fill in the entry in the .rela.plt section. */
3660 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3661 + htab->elf.sgotplt->output_offset
3662 + got_offset);
3663 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3664 rela.r_addend = 0;
3665 loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3666 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3667
3668 if (!h->def_regular)
3669 {
3670 /* Mark the symbol as undefined, rather than as defined in
3671 the .plt section. Leave the value alone. This is a clue
3672 for the dynamic linker, to make function pointer
3673 comparisons work between an application and shared
3674 library. */
3675 sym->st_shndx = SHN_UNDEF;
3676 }
a85d7ed0
NC		 3677 }
3678 }
ec338859 3679
69fc87f1
MS		 3680 if (h->got.offset != (bfd_vma) -1
3681 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3682 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3683 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3684 {
a85d7ed0 3685 Elf_Internal_Rela rela;
947216bf 3686 bfd_byte *loc;
a85d7ed0
NC		 3687
3688 /* This symbol has an entry in the global offset table. Set it
26e41594 3689 up. */
a85d7ed0 3690
f41345a7 3691 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3692 abort ();
a85d7ed0 3693
f41345a7
AK		 3694 rela.r_offset = (htab->elf.sgot->output_section->vma
3695 + htab->elf.sgot->output_offset
dc810e39 3696 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0
NC		 3697
3698 /* If this is a static link, or it is a -Bsymbolic link and the
3699 symbol is defined locally or was forced to be local because
3700 of a version file, we just want to emit a RELATIVE reloc.
3701 The entry in the global offset table will already have been
3702 initialized in the relocate_section function. */
470b557a
AK		 3703 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3704 {
3705 if (info->shared)
3706 {
3707 /* An explicit GOT slot usage needs GLOB_DAT. If the
3708 symbol references local the implicit got.iplt slot
3709 will be used and the IRELATIVE reloc has been created
3710 above. */
3711 goto do_glob_dat;
3712 }
3713 else
3714 {
3715 /* For non-shared objects explicit GOT slots must be
3716 filled with the PLT slot address for pointer
3717 equality reasons. */
3718 bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma
3719 + htab->elf.iplt->output_offset
3720 + h->plt.offset),
3721 htab->elf.sgot->contents + h->got.offset);
3722 return TRUE;
3723 }
3724 }
3725 else if (info->shared
8c21ca21 3726 && SYMBOL_REFERENCES_LOCAL (info, h))
0451c93c 3727 {
470b557a
AK		 3728 /* If this is a static link, or it is a -Bsymbolic link and
3729 the symbol is defined locally or was forced to be local
3730 because of a version file, we just want to emit a
3731 RELATIVE reloc. The entry in the global offset table
3732 will already have been initialized in the
3733 relocate_section function. */
8c21ca21
AK		 3734 if (!h->def_regular)
3735 return FALSE;
0451c93c
MS		 3736 BFD_ASSERT((h->got.offset & 1) != 0);
3737 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3738 rela.r_addend = (h->root.u.def.value
26e41594
AM		 3739 + h->root.u.def.section->output_section->vma
3740 + h->root.u.def.section->output_offset);
3741 }
a85d7ed0
NC		 3742 else
3743 {
3744 BFD_ASSERT((h->got.offset & 1) == 0);
470b557a 3745 do_glob_dat:
f41345a7 3746 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3747 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
26e41594
AM		 3748 rela.r_addend = 0;
3749 }
a85d7ed0 3750
f41345a7
AK		 3751 loc = htab->elf.srelgot->contents;
3752 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3753 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3754 }
3755
f5385ebf 3756 if (h->needs_copy)
a85d7ed0 3757 {
a85d7ed0 3758 Elf_Internal_Rela rela;
947216bf 3759 bfd_byte *loc;
a85d7ed0
NC		 3760
3761 /* This symbols needs a copy reloc. Set it up. */
3762
0451c93c
MS		 3763 if (h->dynindx == -1
3764 || (h->root.type != bfd_link_hash_defined
3765 && h->root.type != bfd_link_hash_defweak)
3766 || htab->srelbss == NULL)
3767 abort ();
a85d7ed0
NC		 3768
3769 rela.r_offset = (h->root.u.def.value
3770 + h->root.u.def.section->output_section->vma
3771 + h->root.u.def.section->output_offset);
3772 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3773 rela.r_addend = 0;
947216bf
AM		 3774 loc = htab->srelbss->contents;
3775 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3776 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3777 }
3778
3779 /* Mark some specially defined symbols as absolute. */
9637f6ef 3780 if (h == htab->elf.hdynamic
22edb2f1
RS		 3781 || h == htab->elf.hgot
3782 || h == htab->elf.hplt)
a85d7ed0
NC		 3783 sym->st_shndx = SHN_ABS;
3784
b34976b6 3785 return TRUE;
a85d7ed0
NC		 3786}
3787
0451c93c
MS		 3788/* Used to decide how to sort relocs in an optimal manner for the
3789 dynamic linker, before writing them out. */
3790
3791static enum elf_reloc_type_class
7e612e98
AM		 3792elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3793 const asection *rel_sec ATTRIBUTE_UNUSED,
3794 const Elf_Internal_Rela *rela)
0451c93c
MS		 3795{
3796 switch ((int) ELF32_R_TYPE (rela->r_info))
3797 {
3798 case R_390_RELATIVE:
3799 return reloc_class_relative;
3800 case R_390_JMP_SLOT:
3801 return reloc_class_plt;
3802 case R_390_COPY:
3803 return reloc_class_copy;
3804 default:
3805 return reloc_class_normal;
3806 }
3807}
3808
a85d7ed0
NC		 3809/* Finish up the dynamic sections. */
3810
b34976b6 3811static bfd_boolean
2c3fc389
NC		 3812elf_s390_finish_dynamic_sections (bfd *output_bfd,
3813 struct bfd_link_info *info)
a85d7ed0 3814{
0451c93c 3815 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3816 bfd *dynobj;
3817 asection *sdyn;
470b557a
AK		 3818 bfd *ibfd;
3819 unsigned int i;
a85d7ed0 3820
0451c93c
MS		 3821 htab = elf_s390_hash_table (info);
3822 dynobj = htab->elf.dynobj;
3d4d4302 3823 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3824
0451c93c 3825 if (htab->elf.dynamic_sections_created)
a85d7ed0 3826 {
a85d7ed0
NC		 3827 Elf32_External_Dyn *dyncon, *dynconend;
3828
f41345a7 3829 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3830 abort ();
a85d7ed0
NC		 3831
3832 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 3833 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3834 for (; dyncon < dynconend; dyncon++)
3835 {
3836 Elf_Internal_Dyn dyn;
a85d7ed0 3837 asection *s;
ec338859 3838
a85d7ed0 3839 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3840
a85d7ed0
NC		 3841 switch (dyn.d_tag)
3842 {
3843 default:
0451c93c 3844 continue;
ec338859 3845
a85d7ed0 3846 case DT_PLTGOT:
f41345a7 3847 dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma;
0451c93c 3848 break;
ec338859 3849
a85d7ed0 3850 case DT_JMPREL:
f41345a7 3851 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
a85d7ed0
NC		 3852 break;
3853
3854 case DT_PLTRELSZ:
f41345a7 3855 s = htab->elf.srelplt->output_section;
eea6121a 3856 dyn.d_un.d_val = s->size;
a85d7ed0
NC		 3857 break;
3858 }
0451c93c
MS		 3859
3860 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3861 }
3862
3863 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3864 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0 3865 {
f41345a7 3866 memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
26e41594 3867 if (info->shared)
0451c93c 3868 {
f41345a7 3869 memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry,
9aa17453
AK		 3870 PLT_FIRST_ENTRY_SIZE);
3871 }
26e41594 3872 else
9aa17453 3873 {
f41345a7 3874 memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry,
9aa17453 3875 PLT_FIRST_ENTRY_SIZE);
26e41594 3876 bfd_put_32 (output_bfd,
f41345a7
AK		 3877 htab->elf.sgotplt->output_section->vma
3878 + htab->elf.sgotplt->output_offset,
3879 htab->elf.splt->contents + 24);
26e41594 3880 }
f41345a7 3881 elf_section_data (htab->elf.splt->output_section)
0451c93c 3882 ->this_hdr.sh_entsize = 4;
a85d7ed0
NC		 3883 }
3884
3885 }
3886
f41345a7 3887 if (htab->elf.sgotplt)
a85d7ed0 3888 {
0451c93c 3889 /* Fill in the first three entries in the global offset table. */
f41345a7 3890 if (htab->elf.sgotplt->size > 0)
0451c93c
MS		 3891 {
3892 bfd_put_32 (output_bfd,
3893 (sdyn == NULL ? (bfd_vma) 0
3894 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3895 htab->elf.sgotplt->contents);
0451c93c 3896 /* One entry for shared object struct ptr. */
f41345a7 3897 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4);
0451c93c 3898 /* One entry for _dl_runtime_resolve. */
f41345a7 3899 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3900 }
a85d7ed0 3901
f41345a7 3902 elf_section_data (htab->elf.sgotplt->output_section)
0451c93c
MS		 3903 ->this_hdr.sh_entsize = 4;
3904 }
470b557a
AK		 3905 /* Finish dynamic symbol for local IFUNC symbols. */
3906 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3907 {
3908 struct plt_entry *local_plt;
3909 Elf_Internal_Sym *isym;
3910 Elf_Internal_Shdr *symtab_hdr;
3911
3912 symtab_hdr = &elf_symtab_hdr (ibfd);
3913
3914 local_plt = elf_s390_local_plt (ibfd);
3915 if (local_plt != NULL)
3916 for (i = 0; i < symtab_hdr->sh_info; i++)
3917 {
3918 if (local_plt[i].plt.offset != (bfd_vma) -1)
3919 {
3920 asection *sec = local_plt[i].sec;
3921 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3922 if (isym == NULL)
3923 return FALSE;
3924
3925 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3926 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3927 local_plt[i].plt.offset,
3928 isym->st_value
3929 + sec->output_section->vma
3930 + sec->output_offset);
3931
3932 }
3933 }
3934 }
b34976b6 3935 return TRUE;
a85d7ed0
NC		 3936}
3937
b34976b6 3938static bfd_boolean
2c3fc389 3939elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note)
979f4a38
NC		 3940{
3941 int offset;
eea6121a 3942 unsigned int size;
979f4a38
NC		 3943
3944 switch (note->descsz)
3945 {
3946 default:
b34976b6 3947 return FALSE;
979f4a38
NC		 3948
3949 case 224: /* S/390 Linux. */
3950 /* pr_cursig */
228e534f 3951 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
979f4a38
NC		 3952
3953 /* pr_pid */
228e534f 3954 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
979f4a38
NC		 3955
3956 /* pr_reg */
3957 offset = 72;
eea6121a 3958 size = 144;
979f4a38
NC		 3959 break;
3960 }
3961
3962 /* Make a ".reg/999" section. */
3963 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 3964 size, note->descpos + offset);
979f4a38
NC		 3965}
3966
4c45e5c9
JJ		 3967/* Return address for Ith PLT stub in section PLT, for relocation REL
3968 or (bfd_vma) -1 if it should not be included. */
3969
3970static bfd_vma
3971elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3972 const arelent *rel ATTRIBUTE_UNUSED)
3973{
3974 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3975}
3976
55786da2
AK		 3977static bfd_boolean
3978elf32_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3979{
3980 elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
3981 return TRUE;
3982}
3983
4c45e5c9 3984
6d00b590 3985#define TARGET_BIG_SYM s390_elf32_vec
a85d7ed0
NC		 3986#define TARGET_BIG_NAME "elf32-s390"
3987#define ELF_ARCH bfd_arch_s390
ae95ffa6 3988#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 3989#define ELF_MACHINE_CODE EM_S390
3990#define ELF_MACHINE_ALT1 EM_S390_OLD
3991#define ELF_MAXPAGESIZE 0x1000
3992
3993#define elf_backend_can_gc_sections 1
51b64d56 3994#define elf_backend_can_refcount 1
a85d7ed0
NC		 3995#define elf_backend_want_got_plt 1
3996#define elf_backend_plt_readonly 1
3997#define elf_backend_want_plt_sym 0
3998#define elf_backend_got_header_size 12
b491616a 3999#define elf_backend_rela_normal 1
a85d7ed0 4000
26e41594 4001#define elf_info_to_howto elf_s390_info_to_howto
a85d7ed0 4002
a85d7ed0
NC		 4003#define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
4004#define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
4005#define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
157090f7 4006#define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
a85d7ed0 4007
55786da2
AK		 4008#define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
4009
a85d7ed0 4010#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
26e41594 4011#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c
MS		 4012#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
4013#define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
a85d7ed0
NC		 4014#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4015#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
26e41594
AM		 4016#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
4017#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
0451c93c 4018#define elf_backend_reloc_type_class elf_s390_reloc_type_class
26e41594 4019#define elf_backend_relocate_section elf_s390_relocate_section
a85d7ed0 4020#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 4021#define elf_backend_init_index_section _bfd_elf_init_1_index_section
979f4a38 4022#define elf_backend_grok_prstatus elf_s390_grok_prstatus
4c45e5c9 4023#define elf_backend_plt_sym_val elf_s390_plt_sym_val
470b557a 4024#define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
a85d7ed0 4025
69fc87f1 4026#define bfd_elf32_mkobject elf_s390_mkobject
26e41594 4027#define elf_backend_object_p elf_s390_object_p
a85d7ed0
NC		 4028
4029#include "elf32-target.h"
GDB Binutils - Deliverables
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