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2013-07-05 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
[deliverable/binutils-gdb.git] / bfd / elf32-s390.c
CommitLineData
a85d7ed0 1/* IBM S/390-specific support for 32-bit ELF
7686d77d 2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
1d7e9d18 3 2011, 2012 Free Software Foundation, Inc.
a85d7ed0
NC		 4 Contributed by Carl B. Pedersen and Martin Schwidefsky.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
cd123cb7 10 the Free Software Foundation; either version 3 of the License, or
a85d7ed0
NC		 11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
3e110533 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
53e09e0a 21 02110-1301, USA. */
a85d7ed0 22
a85d7ed0 23#include "sysdep.h"
3db64b00 24#include "bfd.h"
a85d7ed0
NC		 25#include "bfdlink.h"
26#include "libbfd.h"
27#include "elf-bfd.h"
a85d7ed0
NC		 28#include "elf/s390.h"
29
2c3fc389
NC		 30static bfd_reloc_status_type
31s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
32 asection *, bfd *, char **);
33static bfd_reloc_status_type
34s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
35 asection *, bfd *, char **);
36
a85d7ed0
NC		 37/* The relocation "howto" table. */
38
39static reloc_howto_type elf_howto_table[] =
40{
41 HOWTO (R_390_NONE, /* type */
42 0, /* rightshift */
fb798c50 43 0, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
a85d7ed0 44 0, /* bitsize */
b34976b6 45 FALSE, /* pc_relative */
a85d7ed0
NC		 46 0, /* bitpos */
47 complain_overflow_dont, /* complain_on_overflow */
48 bfd_elf_generic_reloc, /* special_function */
49 "R_390_NONE", /* name */
b34976b6 50 FALSE, /* partial_inplace */
a85d7ed0
NC		 51 0, /* src_mask */
52 0, /* dst_mask */
b34976b6
AM		 53 FALSE), /* pcrel_offset */
54
5236c819
MS		 55 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
56 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
57 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
58 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
59 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
60 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
61 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
62 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
63 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
64 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
15f8604d 65 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 66 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
67 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
68 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
69 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
70 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
71 HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
72 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
73 HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
74 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
75 HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
76 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
77 HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
78 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
79 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
80 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
81 HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
82 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
83 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
84 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
85 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
86 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
87 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
88 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
89 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
90 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
91 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
92 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
93 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
94 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
95 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
96 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
97 EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
98 EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
99 EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
100 EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
101 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
102 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
103 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
104 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
105 EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
106 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
107 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
108 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
109 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
110 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
111 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
112 EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
113 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
114 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE),
115 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
116 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
117 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
118 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
119 EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
69fc87f1
MS		 120 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
121 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
122 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
123 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
124 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
125 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
126 HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE),
128 EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */
129 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
130 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
131 HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
132 bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE),
133 EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */
134 HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
135 bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE),
136 EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */
137 HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE),
139 EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */
140 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
141 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE),
142 HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
143 bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE),
144 EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */
145 HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE),
147 EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */
148 HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE),
150 HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE),
152 HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
153 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE),
bd1ea41b
MS		 154 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
155 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
156 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
157 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
158 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
159 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
160 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
161 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
470b557a
AK		 162 HOWTO(R_390_IRELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, 0xffffffff, FALSE),
fb798c50
AK		 164 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
165 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
166 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
167 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
168 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
169 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
170 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
171 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
a85d7ed0
NC		 172};
173
174/* GNU extension to record C++ vtable hierarchy. */
175static reloc_howto_type elf32_s390_vtinherit_howto =
b34976b6 176 HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
a85d7ed0 177static reloc_howto_type elf32_s390_vtentry_howto =
b34976b6 178 HOWTO (R_390_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
a85d7ed0
NC		 179
180static reloc_howto_type *
2c3fc389
NC		 181elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
182 bfd_reloc_code_real_type code)
a85d7ed0 183{
ec338859 184 switch (code)
0451c93c
MS		 185 {
186 case BFD_RELOC_NONE:
187 return &elf_howto_table[(int) R_390_NONE];
188 case BFD_RELOC_8:
189 return &elf_howto_table[(int) R_390_8];
190 case BFD_RELOC_390_12:
191 return &elf_howto_table[(int) R_390_12];
192 case BFD_RELOC_16:
193 return &elf_howto_table[(int) R_390_16];
194 case BFD_RELOC_32:
195 return &elf_howto_table[(int) R_390_32];
196 case BFD_RELOC_CTOR:
197 return &elf_howto_table[(int) R_390_32];
198 case BFD_RELOC_32_PCREL:
199 return &elf_howto_table[(int) R_390_PC32];
200 case BFD_RELOC_390_GOT12:
201 return &elf_howto_table[(int) R_390_GOT12];
202 case BFD_RELOC_32_GOT_PCREL:
203 return &elf_howto_table[(int) R_390_GOT32];
204 case BFD_RELOC_390_PLT32:
205 return &elf_howto_table[(int) R_390_PLT32];
206 case BFD_RELOC_390_COPY:
207 return &elf_howto_table[(int) R_390_COPY];
208 case BFD_RELOC_390_GLOB_DAT:
209 return &elf_howto_table[(int) R_390_GLOB_DAT];
210 case BFD_RELOC_390_JMP_SLOT:
211 return &elf_howto_table[(int) R_390_JMP_SLOT];
212 case BFD_RELOC_390_RELATIVE:
213 return &elf_howto_table[(int) R_390_RELATIVE];
214 case BFD_RELOC_32_GOTOFF:
5236c819 215 return &elf_howto_table[(int) R_390_GOTOFF32];
0451c93c
MS		 216 case BFD_RELOC_390_GOTPC:
217 return &elf_howto_table[(int) R_390_GOTPC];
218 case BFD_RELOC_390_GOT16:
219 return &elf_howto_table[(int) R_390_GOT16];
220 case BFD_RELOC_16_PCREL:
221 return &elf_howto_table[(int) R_390_PC16];
fb798c50
AK		 222 case BFD_RELOC_390_PC12DBL:
223 return &elf_howto_table[(int) R_390_PC12DBL];
224 case BFD_RELOC_390_PLT12DBL:
225 return &elf_howto_table[(int) R_390_PLT12DBL];
0451c93c
MS		 226 case BFD_RELOC_390_PC16DBL:
227 return &elf_howto_table[(int) R_390_PC16DBL];
228 case BFD_RELOC_390_PLT16DBL:
229 return &elf_howto_table[(int) R_390_PLT16DBL];
fb798c50
AK		 230 case BFD_RELOC_390_PC24DBL:
231 return &elf_howto_table[(int) R_390_PC24DBL];
232 case BFD_RELOC_390_PLT24DBL:
233 return &elf_howto_table[(int) R_390_PLT24DBL];
befc3abb
MS		 234 case BFD_RELOC_390_PC32DBL:
235 return &elf_howto_table[(int) R_390_PC32DBL];
236 case BFD_RELOC_390_PLT32DBL:
237 return &elf_howto_table[(int) R_390_PLT32DBL];
238 case BFD_RELOC_390_GOTPCDBL:
239 return &elf_howto_table[(int) R_390_GOTPCDBL];
240 case BFD_RELOC_390_GOTENT:
241 return &elf_howto_table[(int) R_390_GOTENT];
5236c819
MS		 242 case BFD_RELOC_16_GOTOFF:
243 return &elf_howto_table[(int) R_390_GOTOFF16];
244 case BFD_RELOC_390_GOTPLT12:
245 return &elf_howto_table[(int) R_390_GOTPLT12];
246 case BFD_RELOC_390_GOTPLT16:
247 return &elf_howto_table[(int) R_390_GOTPLT16];
248 case BFD_RELOC_390_GOTPLT32:
249 return &elf_howto_table[(int) R_390_GOTPLT32];
250 case BFD_RELOC_390_GOTPLTENT:
251 return &elf_howto_table[(int) R_390_GOTPLTENT];
252 case BFD_RELOC_390_PLTOFF16:
253 return &elf_howto_table[(int) R_390_PLTOFF16];
254 case BFD_RELOC_390_PLTOFF32:
255 return &elf_howto_table[(int) R_390_PLTOFF32];
69fc87f1
MS		 256 case BFD_RELOC_390_TLS_LOAD:
257 return &elf_howto_table[(int) R_390_TLS_LOAD];
258 case BFD_RELOC_390_TLS_GDCALL:
259 return &elf_howto_table[(int) R_390_TLS_GDCALL];
260 case BFD_RELOC_390_TLS_LDCALL:
261 return &elf_howto_table[(int) R_390_TLS_LDCALL];
262 case BFD_RELOC_390_TLS_GD32:
263 return &elf_howto_table[(int) R_390_TLS_GD32];
264 case BFD_RELOC_390_TLS_GOTIE12:
265 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
266 case BFD_RELOC_390_TLS_GOTIE32:
267 return &elf_howto_table[(int) R_390_TLS_GOTIE32];
268 case BFD_RELOC_390_TLS_LDM32:
269 return &elf_howto_table[(int) R_390_TLS_LDM32];
270 case BFD_RELOC_390_TLS_IE32:
271 return &elf_howto_table[(int) R_390_TLS_IE32];
272 case BFD_RELOC_390_TLS_IEENT:
273 return &elf_howto_table[(int) R_390_TLS_IEENT];
274 case BFD_RELOC_390_TLS_LE32:
275 return &elf_howto_table[(int) R_390_TLS_LE32];
276 case BFD_RELOC_390_TLS_LDO32:
277 return &elf_howto_table[(int) R_390_TLS_LDO32];
278 case BFD_RELOC_390_TLS_DTPMOD:
279 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
280 case BFD_RELOC_390_TLS_DTPOFF:
281 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
282 case BFD_RELOC_390_TLS_TPOFF:
283 return &elf_howto_table[(int) R_390_TLS_TPOFF];
bd1ea41b
MS		 284 case BFD_RELOC_390_20:
285 return &elf_howto_table[(int) R_390_20];
286 case BFD_RELOC_390_GOT20:
287 return &elf_howto_table[(int) R_390_GOT20];
288 case BFD_RELOC_390_GOTPLT20:
289 return &elf_howto_table[(int) R_390_GOTPLT20];
290 case BFD_RELOC_390_TLS_GOTIE20:
291 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
470b557a
AK		 292 case BFD_RELOC_390_IRELATIVE:
293 return &elf_howto_table[(int) R_390_IRELATIVE];
0451c93c
MS		 294 case BFD_RELOC_VTABLE_INHERIT:
295 return &elf32_s390_vtinherit_howto;
296 case BFD_RELOC_VTABLE_ENTRY:
297 return &elf32_s390_vtentry_howto;
298 default:
299 break;
300 }
a85d7ed0
NC		 301 return 0;
302}
303
157090f7
AM		 304static reloc_howto_type *
305elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
306 const char *r_name)
307{
308 unsigned int i;
309
310 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
311 if (elf_howto_table[i].name != NULL
312 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
313 return &elf_howto_table[i];
314
315 if (strcasecmp (elf32_s390_vtinherit_howto.name, r_name) == 0)
316 return &elf32_s390_vtinherit_howto;
317 if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0)
318 return &elf32_s390_vtentry_howto;
319
320 return NULL;
321}
322
a85d7ed0
NC		 323/* We need to use ELF32_R_TYPE so we have our own copy of this function,
324 and elf32-s390.c has its own copy. */
325
326static void
2c3fc389
NC		 327elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
328 arelent *cache_ptr,
329 Elf_Internal_Rela *dst)
a85d7ed0 330{
d0fb9a8d
JJ		 331 unsigned int r_type = ELF32_R_TYPE(dst->r_info);
332 switch (r_type)
a85d7ed0
NC		 333 {
334 case R_390_GNU_VTINHERIT:
335 cache_ptr->howto = &elf32_s390_vtinherit_howto;
336 break;
337
338 case R_390_GNU_VTENTRY:
339 cache_ptr->howto = &elf32_s390_vtentry_howto;
340 break;
341
342 default:
d0fb9a8d
JJ		 343 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
344 {
345 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
346 abfd, (int) r_type);
347 r_type = R_390_NONE;
348 }
349 cache_ptr->howto = &elf_howto_table[r_type];
dc810e39 350 }
a85d7ed0
NC		 351}
352
69fc87f1
MS		 353/* A relocation function which doesn't do anything. */
354static bfd_reloc_status_type
2c3fc389
NC		 355s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
356 arelent *reloc_entry,
357 asymbol *symbol ATTRIBUTE_UNUSED,
358 void * data ATTRIBUTE_UNUSED,
359 asection *input_section,
360 bfd *output_bfd,
361 char **error_message ATTRIBUTE_UNUSED)
69fc87f1
MS		 362{
363 if (output_bfd)
364 reloc_entry->address += input_section->output_offset;
365 return bfd_reloc_ok;
366}
367
bd1ea41b
MS		 368/* Handle the large displacement relocs. */
369static bfd_reloc_status_type
2c3fc389
NC		 370s390_elf_ldisp_reloc (bfd *abfd ATTRIBUTE_UNUSED,
371 arelent *reloc_entry,
372 asymbol *symbol,
373 void * data ATTRIBUTE_UNUSED,
374 asection *input_section,
375 bfd *output_bfd,
376 char **error_message ATTRIBUTE_UNUSED)
bd1ea41b
MS		 377{
378 reloc_howto_type *howto = reloc_entry->howto;
379 bfd_vma relocation;
380 bfd_vma insn;
68ffbac6 381
bd1ea41b
MS		 382 if (output_bfd != (bfd *) NULL
383 && (symbol->flags & BSF_SECTION_SYM) == 0
384 && (! howto->partial_inplace
385 || reloc_entry->addend == 0))
386 {
387 reloc_entry->address += input_section->output_offset;
388 return bfd_reloc_ok;
389 }
68ffbac6 390
bd1ea41b
MS		 391 if (output_bfd != NULL)
392 return bfd_reloc_continue;
68ffbac6 393
07515404 394 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b 395 return bfd_reloc_outofrange;
68ffbac6 396
bd1ea41b
MS		 397 relocation = (symbol->value
398 + symbol->section->output_section->vma
399 + symbol->section->output_offset);
400 relocation += reloc_entry->addend;
401 if (howto->pc_relative)
402 {
403 relocation -= (input_section->output_section->vma
404 + input_section->output_offset);
405 relocation -= reloc_entry->address;
406 }
68ffbac6 407
bd1ea41b
MS		 408 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
409 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
410 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
68ffbac6 411
bd1ea41b
MS		 412 if ((bfd_signed_vma) relocation < - 0x80000
413 || (bfd_signed_vma) relocation > 0x7ffff)
414 return bfd_reloc_overflow;
415 else
416 return bfd_reloc_ok;
417}
418
b34976b6 419static bfd_boolean
2c3fc389 420elf_s390_is_local_label_name (bfd *abfd, const char *name)
a85d7ed0
NC		 421{
422 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 423 return TRUE;
a85d7ed0
NC		 424
425 return _bfd_elf_is_local_label_name (abfd, name);
426}
427
428/* Functions for the 390 ELF linker. */
429
430/* The name of the dynamic interpreter. This is put in the .interp
431 section. */
432
87049b0d 433#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
a85d7ed0 434
64285810
MS		 435/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
436 copying dynamic variables from a shared lib into an app's dynbss
437 section, and instead use a dynamic relocation to point into the
438 shared lib. */
439#define ELIMINATE_COPY_RELOCS 1
440
a85d7ed0
NC		 441/* The size in bytes of the first entry in the procedure linkage table. */
442#define PLT_FIRST_ENTRY_SIZE 32
443/* The size in bytes of an entry in the procedure linkage table. */
dc810e39 444#define PLT_ENTRY_SIZE 32
a85d7ed0
NC		 445
446#define GOT_ENTRY_SIZE 4
447
470b557a
AK		 448#define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela)
449
a85d7ed0
NC		 450/* The first three entries in a procedure linkage table are reserved,
451 and the initial contents are unimportant (we zero them out).
452 Subsequent entries look like this. See the SVR4 ABI 386
453 supplement to see how this works. */
454
455/* For the s390, simple addr offset can only be 0 - 4096.
456 To use the full 2 GB address space, several instructions
457 are needed to load an address in a register and execute
458 a branch( or just saving the address)
459
dc810e39 460 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC		 461
462/* The first 3 words in the GOT are then reserved.
463 Word 0 is the address of the dynamic table.
464 Word 1 is a pointer to a structure describing the object
465 Word 2 is used to point to the loader entry address.
466
4cc11e76 467 The code for position independent PLT entries looks like this:
a85d7ed0
NC		 468
469 r12 holds addr of the current GOT at entry to the PLT
470
471 The GOT holds the address in the PLT to be executed.
472 The loader then gets:
473 24(15) = Pointer to the structure describing the object.
a7e28bbe 474 28(15) = Offset into rela.plt
a85d7ed0
NC		 475
476 The loader must then find the module where the function is
477 and insert the address in the GOT.
478
479 Note: 390 can only address +- 64 K relative.
480 We check if offset > 65536, then make a relative branch -64xxx
481 back to a previous defined branch
482
483PLT1: BASR 1,0 # 2 bytes
484 L 1,22(1) # 4 bytes Load offset in GOT in r 1
485 L 1,(1,12) # 4 bytes Load address from GOT in r1
486 BCR 15,1 # 2 bytes Jump to address
487RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
488 L 1,14(1) # 4 bytes Load offset in symol table in r1
489 BRC 15,-x # 4 bytes Jump to start of PLT
490 .word 0 # 2 bytes filler
491 .long ? # 4 bytes offset in GOT
a7e28bbe 492 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 493
494 This was the general case. There are two additional, optimizes PLT
495 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
496 First the one for GOT offsets < 4096:
497
498PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
499 BCR 15,1 # 2 bytes Jump to address
500 .word 0,0,0 # 6 bytes filler
501RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
a7e28bbe 502 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
a85d7ed0
NC		 503 BRC 15,-x # 4 bytes Jump to start of PLT
504 .word 0,0,0 # 6 bytes filler
a7e28bbe 505 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 506
507 Second the one for GOT offsets < 32768:
508
509PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
510 L 1,(1,12) # 4 bytes Load address from GOT to r1
511 BCR 15,1 # 2 bytes Jump to address
512 .word 0 # 2 bytes filler
513RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
a7e28bbe 514 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
a85d7ed0
NC		 515 BRC 15,-x # 4 bytes Jump to start of PLT
516 .word 0,0,0 # 6 bytes filler
a7e28bbe 517 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 518
519Total = 32 bytes per PLT entry
520
521 The code for static build PLT entries looks like this:
522
523PLT1: BASR 1,0 # 2 bytes
524 L 1,22(1) # 4 bytes Load address of GOT entry
525 L 1,0(0,1) # 4 bytes Load address from GOT in r1
526 BCR 15,1 # 2 bytes Jump to address
527RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
528 L 1,14(1) # 4 bytes Load offset in symbol table in r1
529 BRC 15,-x # 4 bytes Jump to start of PLT
530 .word 0 # 2 bytes filler
531 .long ? # 4 bytes address of GOT entry
a7e28bbe 532 .long ? # 4 bytes offset into rela.plt */
a85d7ed0 533
9aa17453
AK		 534static const bfd_byte elf_s390_plt_entry[PLT_ENTRY_SIZE] =
535 {
536 0x0d, 0x10, /* basr %r1,%r0 */
537 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
538 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */
539 0x07, 0xf1, /* br %r1 */
540 0x0d, 0x10, /* basr %r1,%r0 */
541 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
542 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
543 0x00, 0x00, /* padding */
544 0x00, 0x00, 0x00, 0x00, /* GOT offset */
545 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
546 };
547
548/* Generic PLT pic entry. */
549static const bfd_byte elf_s390_plt_pic_entry[PLT_ENTRY_SIZE] =
550 {
551 0x0d, 0x10, /* basr %r1,%r0 */
552 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
553 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
554 0x07, 0xf1, /* br %r1 */
555 0x0d, 0x10, /* basr %r1,%r0 */
556 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
557 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
558 0x00, 0x00, /* padding */
559 0x00, 0x00, 0x00, 0x00, /* GOT offset */
560 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
561 };
562
563/* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced
564 when generating the PLT slot with the GOT offset. */
565static const bfd_byte elf_s390_plt_pic12_entry[PLT_ENTRY_SIZE] =
566 {
567 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */
568 0x07, 0xf1, /* br %r1 */
569 0x00, 0x00, 0x00, 0x00, /* padding */
570 0x00, 0x00,
571 0x0d, 0x10, /* basr %r1,%r0 */
572 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
573 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
574 0x00, 0x00, 0x00, 0x00,
575 0x00, 0x00, 0x00, 0x00
576 };
577
578/* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced
579 when generating the PLT slot with the GOT offset. */
580static const bfd_byte elf_s390_plt_pic16_entry[PLT_ENTRY_SIZE] =
581 {
582 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */
583 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
584 0x07, 0xf1, /* br %r1 */
585 0x00, 0x00,
586 0x0d, 0x10, /* basr %r1,%r0 */
587 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
588 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
589 0x00, 0x00, 0x00, 0x00,
590 0x00, 0x00, 0x00, 0x00,
591 0x00, 0x00
592 };
a85d7ed0 593
a7e28bbe 594/* The first PLT entry pushes the offset into the rela.plt
a85d7ed0
NC		 595 from R1 onto the stack at 8(15) and the loader object info
596 at 12(15), loads the loader address in R1 and jumps to it. */
597
598/* The first entry in the PLT for PIC code:
599
600PLT0:
a7e28bbe 601 ST 1,28(15) # R1 has offset into rela.plt
a85d7ed0 602 L 1,4(12) # Get loader ino(object struct address)
dc810e39 603 ST 1,24(15) # Store address
a85d7ed0
NC		 604 L 1,8(12) # Entry address of loader in R1
605 BR 1 # Jump to loader
606
607 The first entry in the PLT for static code:
608
609PLT0:
a7e28bbe 610 ST 1,28(15) # R1 has offset into rela.plt
a85d7ed0
NC		 611 BASR 1,0
612 L 1,18(0,1) # Get address of GOT
613 MVC 24(4,15),4(1) # Move loader ino to stack
614 L 1,8(1) # Get address of loader
615 BR 1 # Jump to loader
616 .word 0 # filler
617 .long got # address of GOT */
618
9aa17453
AK		 619static const bfd_byte elf_s390_plt_first_entry[PLT_FIRST_ENTRY_SIZE] =
620 {
621 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
622 0x0d, 0x10, /* basr %r1,%r0 */
623 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */
624 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */
625 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */
626 0x07, 0xf1, /* br %r1 */
627 0x00, 0x00, 0x00, 0x00,
628 0x00, 0x00, 0x00, 0x00,
629 0x00, 0x00
630 };
631
632static const bfd_byte elf_s390_plt_pic_first_entry[PLT_FIRST_ENTRY_SIZE] =
633 {
634 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
635 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */
636 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */
637 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */
638 0x07, 0xf1, /* br %r1 */
639 0x00, 0x00, 0x00, 0x00,
640 0x00, 0x00, 0x00, 0x00,
641 0x00, 0x00, 0x00, 0x00,
642 0x00, 0x00
643 };
a85d7ed0 644
a85d7ed0
NC		 645
646/* s390 ELF linker hash entry. */
647
648struct elf_s390_link_hash_entry
649{
0451c93c 650 struct elf_link_hash_entry elf;
a85d7ed0 651
0451c93c 652 /* Track dynamic relocs copied for this symbol. */
00d8c7a9 653 struct elf_dyn_relocs *dyn_relocs;
5236c819
MS		 654
655 /* Number of GOTPLT references for a function. */
656 bfd_signed_vma gotplt_refcount;
69fc87f1
MS		 657
658#define GOT_UNKNOWN 0
659#define GOT_NORMAL 1
660#define GOT_TLS_GD 2
661#define GOT_TLS_IE 3
662#define GOT_TLS_IE_NLT 4
663 unsigned char tls_type;
470b557a
AK		 664
665 /* For pointer equality reasons we might need to change the symbol
666 type from STT_GNU_IFUNC to STT_FUNC together with its value and
667 section entry. So after alloc_dynrelocs only these values should
668 be used. In order to check whether a symbol is IFUNC use
669 s390_is_ifunc_symbol_p. */
670 bfd_vma ifunc_resolver_address;
671 asection *ifunc_resolver_section;
a85d7ed0
NC		 672};
673
69fc87f1
MS		 674#define elf_s390_hash_entry(ent) \
675 ((struct elf_s390_link_hash_entry *)(ent))
676
470b557a
AK		 677/* This structure represents an entry in the local PLT list needed for
678 local IFUNC symbols. */
679struct plt_entry
680{
681 /* The section of the local symbol.
682 Set in relocate_section and used in finish_dynamic_sections. */
683 asection *sec;
684
685 union
686 {
687 bfd_signed_vma refcount;
688 bfd_vma offset;
689 } plt;
690};
691
0ffa91dd
NC		 692/* NOTE: Keep this structure in sync with
693 the one declared in elf64-s390.c. */
69fc87f1
MS		 694struct elf_s390_obj_tdata
695{
696 struct elf_obj_tdata root;
697
470b557a
AK		 698 /* A local PLT is needed for ifunc symbols. */
699 struct plt_entry *local_plt;
700
0ffa91dd 701 /* TLS type for each local got entry. */
69fc87f1
MS		 702 char *local_got_tls_type;
703};
704
705#define elf_s390_tdata(abfd) \
706 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
707
470b557a
AK		 708#define elf_s390_local_plt(abfd) \
709 (elf_s390_tdata (abfd)->local_plt)
710
69fc87f1
MS		 711#define elf_s390_local_got_tls_type(abfd) \
712 (elf_s390_tdata (abfd)->local_got_tls_type)
713
0ffa91dd
NC		 714#define is_s390_elf(bfd) \
715 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
716 && elf_tdata (bfd) != NULL \
4dfe6ac6 717 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 718
69fc87f1 719static bfd_boolean
62d7a5f6 720elf_s390_mkobject (bfd *abfd)
69fc87f1 721{
0ffa91dd 722 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 723 S390_ELF_DATA);
69fc87f1
MS		 724}
725
726static bfd_boolean
2c3fc389 727elf_s390_object_p (bfd *abfd)
69fc87f1 728{
69fc87f1
MS		 729 /* Set the right machine number for an s390 elf32 file. */
730 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
731}
732
a85d7ed0
NC		 733/* s390 ELF linker hash table. */
734
735struct elf_s390_link_hash_table
736{
0451c93c 737 struct elf_link_hash_table elf;
a85d7ed0 738
0451c93c 739 /* Short-cuts to get to dynamic linker sections. */
0451c93c
MS		 740 asection *sdynbss;
741 asection *srelbss;
470b557a 742 asection *irelifunc;
ec338859 743
2c3fc389
NC		 744 union
745 {
69fc87f1
MS		 746 bfd_signed_vma refcount;
747 bfd_vma offset;
748 } tls_ldm_got;
749
87d72d41
AM		 750 /* Small local sym cache. */
751 struct sym_cache sym_cache;
0451c93c 752};
a85d7ed0
NC		 753
754/* Get the s390 ELF linker hash table from a link_info structure. */
755
756#define elf_s390_hash_table(p) \
4dfe6ac6
NC		 757 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
758 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
a85d7ed0 759
470b557a
AK		 760#undef ELF64
761#include "elf-s390-common.c"
762
a85d7ed0
NC		 763/* Create an entry in an s390 ELF linker hash table. */
764
765static struct bfd_hash_entry *
2c3fc389
NC		 766link_hash_newfunc (struct bfd_hash_entry *entry,
767 struct bfd_hash_table *table,
768 const char *string)
a85d7ed0 769{
a85d7ed0
NC		 770 /* Allocate the structure if it has not already been allocated by a
771 subclass. */
0451c93c
MS		 772 if (entry == NULL)
773 {
774 entry = bfd_hash_allocate (table,
775 sizeof (struct elf_s390_link_hash_entry));
776 if (entry == NULL)
777 return entry;
778 }
ec338859 779
a85d7ed0 780 /* Call the allocation method of the superclass. */
0451c93c
MS		 781 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
782 if (entry != NULL)
a85d7ed0 783 {
0451c93c 784 struct elf_s390_link_hash_entry *eh;
ec338859 785
0451c93c
MS		 786 eh = (struct elf_s390_link_hash_entry *) entry;
787 eh->dyn_relocs = NULL;
5236c819 788 eh->gotplt_refcount = 0;
69fc87f1 789 eh->tls_type = GOT_UNKNOWN;
470b557a
AK		 790 eh->ifunc_resolver_address = 0;
791 eh->ifunc_resolver_section = NULL;
a85d7ed0
NC		 792 }
793
0451c93c 794 return entry;
a85d7ed0
NC		 795}
796
797/* Create an s390 ELF linker hash table. */
798
799static struct bfd_link_hash_table *
2c3fc389 800elf_s390_link_hash_table_create (bfd *abfd)
a85d7ed0
NC		 801{
802 struct elf_s390_link_hash_table *ret;
dc810e39 803 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
a85d7ed0 804
7bf52ea2 805 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
0451c93c 806 if (ret == NULL)
a85d7ed0
NC		 807 return NULL;
808
66eb6687 809 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 810 sizeof (struct elf_s390_link_hash_entry),
811 S390_ELF_DATA))
a85d7ed0 812 {
e2d34d7d 813 free (ret);
a85d7ed0
NC		 814 return NULL;
815 }
816
0451c93c
MS		 817 return &ret->elf.root;
818}
819
820/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
821 shortcuts to them in our hash table. */
822
b34976b6 823static bfd_boolean
2c3fc389 824create_got_section (bfd *dynobj, struct bfd_link_info *info)
0451c93c
MS		 825{
826 struct elf_s390_link_hash_table *htab;
827
828 if (! _bfd_elf_create_got_section (dynobj, info))
b34976b6 829 return FALSE;
0451c93c
MS		 830
831 htab = elf_s390_hash_table (info);
3d4d4302
AM		 832 htab->elf.sgot = bfd_get_linker_section (dynobj, ".got");
833 htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
834 htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got");
f41345a7 835 if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot)
0451c93c
MS		 836 abort ();
837
b34976b6 838 return TRUE;
0451c93c
MS		 839}
840
841/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
842 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
843 hash table. */
844
b34976b6 845static bfd_boolean
2c3fc389 846elf_s390_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
0451c93c
MS		 847{
848 struct elf_s390_link_hash_table *htab;
849
850 htab = elf_s390_hash_table (info);
f41345a7 851 if (!htab->elf.sgot && !create_got_section (dynobj, info))
b34976b6 852 return FALSE;
0451c93c
MS		 853
854 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 855 return FALSE;
0451c93c 856
3d4d4302
AM		 857 htab->elf.splt = bfd_get_linker_section (dynobj, ".plt");
858 htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt");
859 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
0451c93c 860 if (!info->shared)
3d4d4302 861 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
0451c93c 862
f41345a7 863 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
0451c93c
MS		 864 || (!info->shared && !htab->srelbss))
865 abort ();
866
b34976b6 867 return TRUE;
a85d7ed0
NC		 868}
869
0451c93c
MS		 870/* Copy the extra info we tack onto an elf_link_hash_entry. */
871
872static void
2c3fc389
NC		 873elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
874 struct elf_link_hash_entry *dir,
875 struct elf_link_hash_entry *ind)
0451c93c
MS		 876{
877 struct elf_s390_link_hash_entry *edir, *eind;
878
879 edir = (struct elf_s390_link_hash_entry *) dir;
880 eind = (struct elf_s390_link_hash_entry *) ind;
881
882 if (eind->dyn_relocs != NULL)
883 {
884 if (edir->dyn_relocs != NULL)
885 {
00d8c7a9
AK		 886 struct elf_dyn_relocs **pp;
887 struct elf_dyn_relocs *p;
0451c93c 888
fcfa13d2 889 /* Add reloc counts against the indirect sym to the direct sym
0451c93c
MS		 890 list. Merge any entries against the same section. */
891 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
892 {
00d8c7a9 893 struct elf_dyn_relocs *q;
0451c93c
MS		 894
895 for (q = edir->dyn_relocs; q != NULL; q = q->next)
896 if (q->sec == p->sec)
897 {
898 q->pc_count += p->pc_count;
899 q->count += p->count;
900 *pp = p->next;
901 break;
902 }
903 if (q == NULL)
904 pp = &p->next;
905 }
906 *pp = edir->dyn_relocs;
907 }
908
909 edir->dyn_relocs = eind->dyn_relocs;
910 eind->dyn_relocs = NULL;
911 }
912
69fc87f1
MS		 913 if (ind->root.type == bfd_link_hash_indirect
914 && dir->got.refcount <= 0)
915 {
916 edir->tls_type = eind->tls_type;
917 eind->tls_type = GOT_UNKNOWN;
918 }
919
64285810
MS		 920 if (ELIMINATE_COPY_RELOCS
921 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 922 && dir->dynamic_adjusted)
923 {
924 /* If called to transfer flags for a weakdef during processing
925 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
926 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
927 dir->ref_dynamic |= ind->ref_dynamic;
928 dir->ref_regular |= ind->ref_regular;
929 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
930 dir->needs_plt |= ind->needs_plt;
931 }
64285810 932 else
fcfa13d2 933 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 934}
a85d7ed0 935
69fc87f1 936static int
2c3fc389
NC		 937elf_s390_tls_transition (struct bfd_link_info *info,
938 int r_type,
939 int is_local)
69fc87f1
MS		 940{
941 if (info->shared)
942 return r_type;
943
944 switch (r_type)
945 {
946 case R_390_TLS_GD32:
947 case R_390_TLS_IE32:
948 if (is_local)
949 return R_390_TLS_LE32;
950 return R_390_TLS_IE32;
951 case R_390_TLS_GOTIE32:
952 if (is_local)
953 return R_390_TLS_LE32;
954 return R_390_TLS_GOTIE32;
955 case R_390_TLS_LDM32:
956 return R_390_TLS_LE32;
957 }
958
959 return r_type;
960}
961
a85d7ed0
NC		 962/* Look through the relocs for a section during the first phase, and
963 allocate space in the global offset table or procedure linkage
964 table. */
965
b34976b6 966static bfd_boolean
2c3fc389
NC		 967elf_s390_check_relocs (bfd *abfd,
968 struct bfd_link_info *info,
969 asection *sec,
970 const Elf_Internal_Rela *relocs)
a85d7ed0 971{
0451c93c 972 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 973 Elf_Internal_Shdr *symtab_hdr;
974 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 975 const Elf_Internal_Rela *rel;
976 const Elf_Internal_Rela *rel_end;
a85d7ed0 977 asection *sreloc;
5236c819 978 bfd_signed_vma *local_got_refcounts;
69fc87f1 979 int tls_type, old_tls_type;
470b557a 980 Elf_Internal_Sym *isym;
a85d7ed0 981
1049f94e 982 if (info->relocatable)
b34976b6 983 return TRUE;
a85d7ed0 984
0ffa91dd
NC		 985 BFD_ASSERT (is_s390_elf (abfd));
986
0451c93c 987 htab = elf_s390_hash_table (info);
0ffa91dd 988 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 989 sym_hashes = elf_sym_hashes (abfd);
5236c819 990 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 991
a85d7ed0
NC		 992 sreloc = NULL;
993
994 rel_end = relocs + sec->reloc_count;
995 for (rel = relocs; rel < rel_end; rel++)
996 {
69fc87f1 997 unsigned int r_type;
a85d7ed0
NC		 998 unsigned long r_symndx;
999 struct elf_link_hash_entry *h;
1000
1001 r_symndx = ELF32_R_SYM (rel->r_info);
1002
0451c93c
MS		 1003 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1004 {
d003868e
AM		 1005 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1006 abfd, r_symndx);
b34976b6 1007 return FALSE;
0451c93c
MS		 1008 }
1009
a85d7ed0 1010 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK		 1011 {
1012 /* A local symbol. */
1013 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1014 abfd, r_symndx);
1015 if (isym == NULL)
1016 return FALSE;
1017
1018 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1019 {
1020 struct plt_entry *plt;
1021
0cb79d69
AK		 1022 if (htab->elf.dynobj == NULL)
1023 htab->elf.dynobj = abfd;
1024
470b557a
AK		 1025 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1026 return FALSE;
1027
1028 if (local_got_refcounts == NULL)
1029 {
1030 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
1031 return FALSE;
1032 local_got_refcounts = elf_local_got_refcounts (abfd);
1033 }
1034 plt = elf_s390_local_plt (abfd);
1035 plt[r_symndx].plt.refcount++;
1036 }
1037 h = NULL;
1038 }
a85d7ed0 1039 else
973a3492
L		 1040 {
1041 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1042 while (h->root.type == bfd_link_hash_indirect
1043 || h->root.type == bfd_link_hash_warning)
1044 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM		 1045
1046 /* PR15323, ref flags aren't set for references in the same
1047 object. */
1048 h->root.non_ir_ref = 1;
973a3492 1049 }
a85d7ed0 1050
5236c819
MS		 1051 /* Create got section and local_got_refcounts array if they
1052 are needed. */
69fc87f1
MS		 1053 r_type = elf_s390_tls_transition (info,
1054 ELF32_R_TYPE (rel->r_info),
1055 h == NULL);
1056 switch (r_type)
a85d7ed0
NC		 1057 {
1058 case R_390_GOT12:
5236c819 1059 case R_390_GOT16:
bd1ea41b 1060 case R_390_GOT20:
a85d7ed0 1061 case R_390_GOT32:
befc3abb 1062 case R_390_GOTENT:
5236c819
MS		 1063 case R_390_GOTPLT12:
1064 case R_390_GOTPLT16:
bd1ea41b 1065 case R_390_GOTPLT20:
5236c819
MS		 1066 case R_390_GOTPLT32:
1067 case R_390_GOTPLTENT:
69fc87f1
MS		 1068 case R_390_TLS_GD32:
1069 case R_390_TLS_GOTIE12:
bd1ea41b 1070 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1071 case R_390_TLS_GOTIE32:
1072 case R_390_TLS_IEENT:
1073 case R_390_TLS_IE32:
1074 case R_390_TLS_LDM32:
5236c819
MS		 1075 if (h == NULL
1076 && local_got_refcounts == NULL)
a85d7ed0 1077 {
470b557a 1078 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 1079 return FALSE;
470b557a 1080 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 1081 }
5236c819
MS		 1082 /* Fall through. */
1083 case R_390_GOTOFF16:
1084 case R_390_GOTOFF32:
0451c93c 1085 case R_390_GOTPC:
befc3abb 1086 case R_390_GOTPCDBL:
f41345a7 1087 if (htab->elf.sgot == NULL)
0451c93c
MS		 1088 {
1089 if (htab->elf.dynobj == NULL)
1090 htab->elf.dynobj = abfd;
1091 if (!create_got_section (htab->elf.dynobj, info))
b34976b6 1092 return FALSE;
0451c93c 1093 }
5236c819
MS		 1094 }
1095
470b557a
AK		 1096 if (h != NULL)
1097 {
1098 if (htab->elf.dynobj == NULL)
1099 htab->elf.dynobj = abfd;
1100 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1101 return FALSE;
1102
1103 /* Make sure an IFUNC symbol defined in a non-shared object
1104 always gets a PLT slot. */
1105 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1106 {
1107 /* The symbol is called by the dynamic loader in order
1108 to resolve the relocation. So it is in fact also
1109 referenced. */
1110 h->ref_regular = 1;
1111 h->needs_plt = 1;
1112 }
1113 }
69fc87f1 1114 switch (r_type)
5236c819 1115 {
5236c819
MS		 1116 case R_390_GOTOFF16:
1117 case R_390_GOTOFF32:
1118 case R_390_GOTPC:
1119 case R_390_GOTPCDBL:
470b557a
AK		 1120 /* These relocs do not need a GOT slot. They just load the
1121 GOT pointer itself or address something else relative to
1122 the GOT. Since the GOT pointer has been set up above we
1123 are done. */
a85d7ed0
NC		 1124 break;
1125
fb798c50 1126 case R_390_PLT12DBL:
26e41594 1127 case R_390_PLT16DBL:
fb798c50 1128 case R_390_PLT24DBL:
26e41594 1129 case R_390_PLT32DBL:
a85d7ed0 1130 case R_390_PLT32:
5236c819
MS		 1131 case R_390_PLTOFF16:
1132 case R_390_PLTOFF32:
a85d7ed0 1133 /* This symbol requires a procedure linkage table entry. We
26e41594
AM		 1134 actually build the entry in adjust_dynamic_symbol,
1135 because this might be a case of linking PIC code which is
1136 never referenced by a dynamic object, in which case we
1137 don't need to generate a procedure linkage table entry
1138 after all. */
a85d7ed0
NC		 1139
1140 /* If this is a local symbol, we resolve it directly without
26e41594 1141 creating a procedure linkage table entry. */
5236c819
MS		 1142 if (h != NULL)
1143 {
f5385ebf 1144 h->needs_plt = 1;
5236c819
MS		 1145 h->plt.refcount += 1;
1146 }
1147 break;
a85d7ed0 1148
5236c819
MS		 1149 case R_390_GOTPLT12:
1150 case R_390_GOTPLT16:
bd1ea41b 1151 case R_390_GOTPLT20:
5236c819
MS		 1152 case R_390_GOTPLT32:
1153 case R_390_GOTPLTENT:
1154 /* This symbol requires either a procedure linkage table entry
1155 or an entry in the local got. We actually build the entry
1156 in adjust_dynamic_symbol because whether this is really a
1157 global reference can change and with it the fact if we have
1158 to create a plt entry or a local got entry. To be able to
1159 make a once global symbol a local one we have to keep track
1160 of the number of gotplt references that exist for this
1161 symbol. */
1162 if (h != NULL)
1163 {
1164 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1165 h->needs_plt = 1;
5236c819
MS		 1166 h->plt.refcount += 1;
1167 }
1168 else
1169 local_got_refcounts[r_symndx] += 1;
a85d7ed0
NC		 1170 break;
1171
69fc87f1
MS		 1172 case R_390_TLS_LDM32:
1173 htab->tls_ldm_got.refcount += 1;
1174 break;
1175
1176 case R_390_TLS_IE32:
1177 case R_390_TLS_GOTIE12:
bd1ea41b 1178 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1179 case R_390_TLS_GOTIE32:
1180 case R_390_TLS_IEENT:
1181 if (info->shared)
1182 info->flags |= DF_STATIC_TLS;
ae9a127f 1183 /* Fall through. */
69fc87f1
MS		 1184
1185 case R_390_GOT12:
26e41594 1186 case R_390_GOT16:
bd1ea41b 1187 case R_390_GOT20:
69fc87f1
MS		 1188 case R_390_GOT32:
1189 case R_390_GOTENT:
1190 case R_390_TLS_GD32:
1191 /* This symbol requires a global offset table entry. */
1192 switch (r_type)
1193 {
1194 default:
1195 case R_390_GOT12:
1196 case R_390_GOT16:
bd1ea41b 1197 case R_390_GOT20:
69fc87f1
MS		 1198 case R_390_GOT32:
1199 case R_390_GOTENT:
1200 tls_type = GOT_NORMAL;
1201 break;
1202 case R_390_TLS_GD32:
1203 tls_type = GOT_TLS_GD;
1204 break;
1205 case R_390_TLS_IE32:
1206 case R_390_TLS_GOTIE32:
1207 tls_type = GOT_TLS_IE;
1208 break;
1209 case R_390_TLS_GOTIE12:
bd1ea41b 1210 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1211 case R_390_TLS_IEENT:
1212 tls_type = GOT_TLS_IE_NLT;
1213 break;
1214 }
1215
1216 if (h != NULL)
1217 {
1218 h->got.refcount += 1;
1219 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1220 }
1221 else
1222 {
1223 local_got_refcounts[r_symndx] += 1;
1224 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1225 }
1226 /* If a TLS symbol is accessed using IE at least once,
1227 there is no point to use dynamic model for it. */
1228 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1229 {
1230 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1231 {
1232 (*_bfd_error_handler)
d003868e
AM		 1233 (_("%B: `%s' accessed both as normal and thread local symbol"),
1234 abfd, h->root.root.string);
69fc87f1
MS		 1235 return FALSE;
1236 }
1237 if (old_tls_type > tls_type)
1238 tls_type = old_tls_type;
1239 }
1240
1241 if (old_tls_type != tls_type)
1242 {
1243 if (h != NULL)
1244 elf_s390_hash_entry (h)->tls_type = tls_type;
1245 else
1246 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1247 }
1248
1249 if (r_type != R_390_TLS_IE32)
1250 break;
ae9a127f 1251 /* Fall through. */
69fc87f1
MS		 1252
1253 case R_390_TLS_LE32:
1254 if (!info->shared)
1255 break;
1256 info->flags |= DF_STATIC_TLS;
ae9a127f 1257 /* Fall through. */
69fc87f1 1258
26e41594
AM		 1259 case R_390_8:
1260 case R_390_16:
a85d7ed0 1261 case R_390_32:
26e41594 1262 case R_390_PC16:
fb798c50 1263 case R_390_PC12DBL:
26e41594 1264 case R_390_PC16DBL:
fb798c50 1265 case R_390_PC24DBL:
befc3abb 1266 case R_390_PC32DBL:
a85d7ed0 1267 case R_390_PC32:
470b557a 1268 if (h != NULL)
0451c93c
MS		 1269 {
1270 /* If this reloc is in a read-only section, we might
1271 need a copy reloc. We can't check reliably at this
1272 stage whether the section is read-only, as input
1273 sections have not yet been mapped to output sections.
1274 Tentatively set the flag for now, and correct in
1275 adjust_dynamic_symbol. */
f5385ebf 1276 h->non_got_ref = 1;
ec338859 1277
470b557a
AK		 1278 if (!info->shared)
1279 {
1280 /* We may need a .plt entry if the function this reloc
1281 refers to is in a shared lib. */
1282 h->plt.refcount += 1;
1283 }
0451c93c 1284 }
a85d7ed0
NC		 1285
1286 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1287 against a global symbol, or a non PC relative reloc
1288 against a local symbol, then we need to copy the reloc
1289 into the shared library. However, if we are linking with
1290 -Bsymbolic, we do not need to copy a reloc against a
1291 global symbol which is defined in an object we are
1292 including in the link (i.e., DEF_REGULAR is set). At
1293 this point we have not seen all the input files, so it is
1294 possible that DEF_REGULAR is not set now but will be set
1295 later (it is never cleared). In case of a weak definition,
1296 DEF_REGULAR may be cleared later by a strong definition in
1297 a shared library. We account for that possibility below by
1298 storing information in the relocs_copied field of the hash
1299 table entry. A similar situation occurs when creating
1300 shared libraries and symbol visibility changes render the
1301 symbol local.
1302
1303 If on the other hand, we are creating an executable, we
1304 may need to keep relocations for symbols satisfied by a
1305 dynamic library if we manage to avoid copy relocs for the
1306 symbol. */
1307 if ((info->shared
1308 && (sec->flags & SEC_ALLOC) != 0
ec338859 1309 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1310 && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1311 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1312 && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL
befc3abb 1313 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
0451c93c
MS		 1314 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1315 || (h != NULL
8c21ca21 1316 && (! SYMBOLIC_BIND (info, h)
0451c93c 1317 || h->root.type == bfd_link_hash_defweak
f5385ebf 1318 || !h->def_regular))))
64285810
MS		 1319 || (ELIMINATE_COPY_RELOCS
1320 && !info->shared
0451c93c
MS		 1321 && (sec->flags & SEC_ALLOC) != 0
1322 && h != NULL
1323 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1324 || !h->def_regular)))
a85d7ed0 1325 {
00d8c7a9
AK		 1326 struct elf_dyn_relocs *p;
1327 struct elf_dyn_relocs **head;
ec338859 1328
0451c93c
MS		 1329 /* We must copy these reloc types into the output file.
1330 Create a reloc section in dynobj and make room for
1331 this reloc. */
a85d7ed0
NC		 1332 if (sreloc == NULL)
1333 {
0451c93c
MS		 1334 if (htab->elf.dynobj == NULL)
1335 htab->elf.dynobj = abfd;
a85d7ed0 1336
83bac4b0
NC		 1337 sreloc = _bfd_elf_make_dynamic_reloc_section
1338 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1339
a85d7ed0 1340 if (sreloc == NULL)
83bac4b0 1341 return FALSE;
a85d7ed0
NC		 1342 }
1343
0451c93c
MS		 1344 /* If this is a global symbol, we count the number of
1345 relocations we need for this symbol. */
1346 if (h != NULL)
a85d7ed0 1347 {
ec338859 1348 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS		 1349 }
1350 else
1351 {
ec338859
AM		 1352 /* Track dynamic relocs needed for local syms too.
1353 We really need local syms available to do this
1354 easily. Oh well. */
ec338859 1355 asection *s;
6edfbbad 1356 void *vpp;
ae9a127f 1357
87d72d41
AM		 1358 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1359 abfd, r_symndx);
1360 if (isym == NULL)
b34976b6 1361 return FALSE;
ec338859 1362
87d72d41
AM		 1363 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1364 if (s == NULL)
1365 s = sec;
1366
6edfbbad 1367 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1368 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1369 }
1370
1371 p = *head;
1372 if (p == NULL || p->sec != sec)
1373 {
1374 bfd_size_type amt = sizeof *p;
ae9a127f 1375
00d8c7a9 1376 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1377 bfd_alloc (htab->elf.dynobj, amt));
1378 if (p == NULL)
b34976b6 1379 return FALSE;
ec338859
AM		 1380 p->next = *head;
1381 *head = p;
1382 p->sec = sec;
1383 p->count = 0;
1384 p->pc_count = 0;
a85d7ed0 1385 }
ec338859
AM		 1386
1387 p->count += 1;
1388 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
fb798c50 1389 || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL
ec338859 1390 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
fb798c50 1391 || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL
befc3abb 1392 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
ec338859
AM		 1393 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1394 p->pc_count += 1;
a85d7ed0 1395 }
a85d7ed0 1396 break;
ec338859 1397
a85d7ed0
NC		 1398 /* This relocation describes the C++ object vtable hierarchy.
1399 Reconstruct it for later use during GC. */
26e41594 1400 case R_390_GNU_VTINHERIT:
c152c796 1401 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
26e41594
AM		 1402 return FALSE;
1403 break;
ec338859 1404
a85d7ed0
NC		 1405 /* This relocation describes which C++ vtable entries are actually
1406 used. Record for later use during GC. */
26e41594 1407 case R_390_GNU_VTENTRY:
d17e0c6e
JB		 1408 BFD_ASSERT (h != NULL);
1409 if (h != NULL
1410 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
26e41594
AM		 1411 return FALSE;
1412 break;
ec338859 1413
a85d7ed0
NC		 1414 default:
1415 break;
1416 }
1417 }
1418
b34976b6 1419 return TRUE;
a85d7ed0
NC		 1420}
1421
1422/* Return the section that should be marked against GC for a given
1423 relocation. */
1424
1425static asection *
07adf181
AM		 1426elf_s390_gc_mark_hook (asection *sec,
1427 struct bfd_link_info *info,
1428 Elf_Internal_Rela *rel,
1429 struct elf_link_hash_entry *h,
1430 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1431{
1432 if (h != NULL)
07adf181
AM		 1433 switch (ELF32_R_TYPE (rel->r_info))
1434 {
1435 case R_390_GNU_VTINHERIT:
1436 case R_390_GNU_VTENTRY:
1437 return NULL;
1438 }
1439 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0 1440
a85d7ed0
NC		 1441}
1442
1443/* Update the got entry reference counts for the section being removed. */
1444
b34976b6 1445static bfd_boolean
07adf181
AM		 1446elf_s390_gc_sweep_hook (bfd *abfd,
1447 struct bfd_link_info *info,
1448 asection *sec,
1449 const Elf_Internal_Rela *relocs)
a85d7ed0 1450{
470b557a 1451 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1452 Elf_Internal_Shdr *symtab_hdr;
1453 struct elf_link_hash_entry **sym_hashes;
1454 bfd_signed_vma *local_got_refcounts;
1455 const Elf_Internal_Rela *rel, *relend;
a85d7ed0 1456
7dda2462
TG		 1457 if (info->relocatable)
1458 return TRUE;
1459
470b557a
AK		 1460 htab = elf_s390_hash_table (info);
1461 if (htab == NULL)
1462 return FALSE;
1463
ec338859 1464 elf_section_data (sec)->local_dynrel = NULL;
a85d7ed0 1465
0ffa91dd 1466 symtab_hdr = &elf_symtab_hdr (abfd);
0451c93c
MS		 1467 sym_hashes = elf_sym_hashes (abfd);
1468 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0
NC		 1469
1470 relend = relocs + sec->reloc_count;
1471 for (rel = relocs; rel < relend; rel++)
5236c819 1472 {
26e41594
AM		 1473 unsigned long r_symndx;
1474 unsigned int r_type;
1475 struct elf_link_hash_entry *h = NULL;
1476
5236c819 1477 r_symndx = ELF32_R_SYM (rel->r_info);
26e41594
AM		 1478 if (r_symndx >= symtab_hdr->sh_info)
1479 {
1480 struct elf_s390_link_hash_entry *eh;
00d8c7a9
AK		 1481 struct elf_dyn_relocs **pp;
1482 struct elf_dyn_relocs *p;
0451c93c 1483
26e41594 1484 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1485 while (h->root.type == bfd_link_hash_indirect
1486 || h->root.type == bfd_link_hash_warning)
1487 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1488 eh = (struct elf_s390_link_hash_entry *) h;
5236c819 1489
26e41594
AM		 1490 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1491 if (p->sec == sec)
1492 {
1493 /* Everything must go for SEC. */
1494 *pp = p->next;
1495 break;
1496 }
1497 }
470b557a
AK		 1498 else
1499 {
1500 Elf_Internal_Sym *isym;
1501
1502 /* A local symbol. */
1503 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1504 abfd, r_symndx);
1505 if (isym == NULL)
1506 return FALSE;
1507
1508 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1509 {
1510 struct plt_entry *plt = elf_s390_local_plt (abfd);
1511 if (plt[r_symndx].plt.refcount > 0)
1512 plt[r_symndx].plt.refcount--;
1513 }
1514 }
26e41594
AM		 1515
1516 r_type = ELF32_R_TYPE (rel->r_info);
1517 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
69fc87f1 1518 switch (r_type)
5236c819 1519 {
69fc87f1
MS		 1520 case R_390_TLS_LDM32:
1521 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1522 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1523 break;
1524
1525 case R_390_TLS_GD32:
1526 case R_390_TLS_IE32:
1527 case R_390_TLS_GOTIE12:
bd1ea41b 1528 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1529 case R_390_TLS_GOTIE32:
1530 case R_390_TLS_IEENT:
5236c819
MS		 1531 case R_390_GOT12:
1532 case R_390_GOT16:
bd1ea41b 1533 case R_390_GOT20:
5236c819
MS		 1534 case R_390_GOT32:
1535 case R_390_GOTOFF16:
1536 case R_390_GOTOFF32:
1537 case R_390_GOTPC:
1538 case R_390_GOTPCDBL:
1539 case R_390_GOTENT:
1540 if (h != NULL)
1541 {
1542 if (h->got.refcount > 0)
1543 h->got.refcount -= 1;
1544 }
1545 else if (local_got_refcounts != NULL)
1546 {
1547 if (local_got_refcounts[r_symndx] > 0)
1548 local_got_refcounts[r_symndx] -= 1;
1549 }
26e41594 1550 break;
a85d7ed0 1551
5236c819
MS		 1552 case R_390_8:
1553 case R_390_12:
1554 case R_390_16:
bd1ea41b 1555 case R_390_20:
5236c819
MS		 1556 case R_390_32:
1557 case R_390_PC16:
fb798c50 1558 case R_390_PC12DBL:
5236c819 1559 case R_390_PC16DBL:
fb798c50 1560 case R_390_PC24DBL:
5236c819
MS		 1561 case R_390_PC32DBL:
1562 case R_390_PC32:
26e41594
AM		 1563 if (info->shared)
1564 break;
1565 /* Fall through. */
1566
fb798c50 1567 case R_390_PLT12DBL:
69fc87f1 1568 case R_390_PLT16DBL:
fb798c50 1569 case R_390_PLT24DBL:
69fc87f1
MS		 1570 case R_390_PLT32DBL:
1571 case R_390_PLT32:
1572 case R_390_PLTOFF16:
1573 case R_390_PLTOFF32:
1574 if (h != NULL)
1575 {
1576 if (h->plt.refcount > 0)
1577 h->plt.refcount -= 1;
1578 }
1579 break;
1580
1581 case R_390_GOTPLT12:
1582 case R_390_GOTPLT16:
bd1ea41b 1583 case R_390_GOTPLT20:
69fc87f1
MS		 1584 case R_390_GOTPLT32:
1585 case R_390_GOTPLTENT:
1586 if (h != NULL)
1587 {
1588 if (h->plt.refcount > 0)
1589 {
1590 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1591 h->plt.refcount -= 1;
1592 }
1593 }
1594 else if (local_got_refcounts != NULL)
1595 {
1596 if (local_got_refcounts[r_symndx] > 0)
1597 local_got_refcounts[r_symndx] -= 1;
1598 }
1599 break;
1600
5236c819
MS		 1601 default:
1602 break;
1603 }
1604 }
a85d7ed0 1605
b34976b6 1606 return TRUE;
a85d7ed0
NC		 1607}
1608
5236c819
MS		 1609/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1610 entry but we found we will not create any. Called when we find we will
1611 not have any PLT for this symbol, by for example
1612 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1613 or elf_s390_size_dynamic_sections if no dynamic sections will be
1614 created (we're only linking static objects). */
1615
1616static void
2c3fc389 1617elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1618{
1619 if (h->elf.root.type == bfd_link_hash_warning)
1620 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1621
1622 if (h->gotplt_refcount <= 0)
1623 return;
1624
1625 /* We simply add the number of gotplt references to the number
1626 * of got references for this symbol. */
1627 h->elf.got.refcount += h->gotplt_refcount;
1628 h->gotplt_refcount = -1;
1629}
1630
a85d7ed0
NC		 1631/* Adjust a symbol defined by a dynamic object and referenced by a
1632 regular object. The current definition is in some section of the
1633 dynamic object, but we're not including those sections. We have to
1634 change the definition to something the rest of the link can
1635 understand. */
1636
b34976b6 1637static bfd_boolean
2c3fc389
NC		 1638elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1639 struct elf_link_hash_entry *h)
a85d7ed0 1640{
0451c93c 1641 struct elf_s390_link_hash_table *htab;
a85d7ed0 1642 asection *s;
a85d7ed0 1643
470b557a
AK		 1644 /* STT_GNU_IFUNC symbol must go through PLT. */
1645 if (s390_is_ifunc_symbol_p (h))
1646 return TRUE;
1647
a85d7ed0
NC		 1648 /* If this is a function, put it in the procedure linkage table. We
1649 will fill in the contents of the procedure linkage table later
cedb70c5 1650 (although we could actually do it here). */
a85d7ed0 1651 if (h->type == STT_FUNC
f5385ebf 1652 || h->needs_plt)
a85d7ed0 1653 {
0451c93c 1654 if (h->plt.refcount <= 0
8c21ca21
AK		 1655 || SYMBOL_CALLS_LOCAL (info, h)
1656 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1657 && h->root.type != bfd_link_hash_undefweak))
a85d7ed0
NC		 1658 {
1659 /* This case can occur if we saw a PLT32 reloc in an input
26e41594
AM		 1660 file, but the symbol was never referred to by a dynamic
1661 object, or if all references were garbage collected. In
a85d7ed0
NC		 1662 such a case, we don't actually need to build a procedure
1663 linkage table, and we can just do a PC32 reloc instead. */
1664 h->plt.offset = (bfd_vma) -1;
f5385ebf 1665 h->needs_plt = 0;
5236c819 1666 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1667 }
1668
b34976b6 1669 return TRUE;
a85d7ed0 1670 }
bbd7ec4a 1671 else
0451c93c
MS		 1672 /* It's possible that we incorrectly decided a .plt reloc was
1673 needed for an R_390_PC32 reloc to a non-function sym in
1674 check_relocs. We can't decide accurately between function and
1675 non-function syms in check-relocs; Objects loaded later in
1676 the link may change h->type. So fix it now. */
bbd7ec4a 1677 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1678
1679 /* If this is a weak symbol, and there is a real definition, the
1680 processor independent code will have arranged for us to see the
1681 real definition first, and we can just use the same value. */
f6e332e6 1682 if (h->u.weakdef != NULL)
a85d7ed0 1683 {
f6e332e6
AM		 1684 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1685 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1686 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1687 h->root.u.def.value = h->u.weakdef->root.u.def.value;
64285810 1688 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1689 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1690 return TRUE;
a85d7ed0
NC		 1691 }
1692
1693 /* This is a reference to a symbol defined by a dynamic object which
1694 is not a function. */
1695
1696 /* If we are creating a shared library, we must presume that the
1697 only references to the symbol are via the global offset table.
1698 For such cases we need not do anything here; the relocations will
1699 be handled correctly by relocate_section. */
1700 if (info->shared)
b34976b6 1701 return TRUE;
a85d7ed0
NC		 1702
1703 /* If there are no references to this symbol that do not use the
1704 GOT, we don't need to generate a copy reloc. */
f5385ebf 1705 if (!h->non_got_ref)
b34976b6 1706 return TRUE;
a85d7ed0 1707
0451c93c
MS		 1708 /* If -z nocopyreloc was given, we won't generate them either. */
1709 if (info->nocopyreloc)
1710 {
f5385ebf 1711 h->non_got_ref = 0;
b34976b6 1712 return TRUE;
0451c93c
MS		 1713 }
1714
64285810 1715 if (ELIMINATE_COPY_RELOCS)
0451c93c 1716 {
64285810 1717 struct elf_s390_link_hash_entry * eh;
00d8c7a9 1718 struct elf_dyn_relocs *p;
0451c93c 1719
64285810
MS		 1720 eh = (struct elf_s390_link_hash_entry *) h;
1721 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1722 {
1723 s = p->sec->output_section;
1724 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1725 break;
1726 }
1727
1728 /* If we didn't find any dynamic relocs in read-only sections, then
1729 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1730 if (p == NULL)
1731 {
f5385ebf 1732 h->non_got_ref = 0;
64285810
MS		 1733 return TRUE;
1734 }
0451c93c
MS		 1735 }
1736
a85d7ed0
NC		 1737 /* We must allocate the symbol in our .dynbss section, which will
1738 become part of the .bss section of the executable. There will be
1739 an entry for this symbol in the .dynsym section. The dynamic
1740 object will contain position independent code, so all references
1741 from the dynamic object to this symbol will go through the global
1742 offset table. The dynamic linker will use the .dynsym entry to
1743 determine the address it must put in the global offset table, so
1744 both the dynamic object and the regular object will refer to the
1745 same memory location for the variable. */
1746
0451c93c 1747 htab = elf_s390_hash_table (info);
a85d7ed0 1748
0451c93c
MS		 1749 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1750 copy the initial value out of the dynamic object and into the
1751 runtime process image. */
1d7e9d18 1752 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1753 {
eea6121a 1754 htab->srelbss->size += sizeof (Elf32_External_Rela);
f5385ebf 1755 h->needs_copy = 1;
a85d7ed0
NC		 1756 }
1757
0451c93c 1758 s = htab->sdynbss;
a85d7ed0 1759
027297b7 1760 return _bfd_elf_adjust_dynamic_copy (h, s);
a85d7ed0
NC		 1761}
1762
0451c93c
MS		 1763/* Allocate space in .plt, .got and associated reloc sections for
1764 dynamic relocs. */
1765
b34976b6 1766static bfd_boolean
2c3fc389 1767allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1768{
1769 struct bfd_link_info *info;
1770 struct elf_s390_link_hash_table *htab;
470b557a 1771 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1772 struct elf_dyn_relocs *p;
0451c93c 1773
e92d460e 1774 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1775 return TRUE;
0451c93c
MS		 1776
1777 info = (struct bfd_link_info *) inf;
1778 htab = elf_s390_hash_table (info);
1779
470b557a
AK		 1780 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1781 here if it is defined and referenced in a non-shared object. */
1782 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1783 return s390_elf_allocate_ifunc_dyn_relocs (info, h,
1784 &eh->dyn_relocs);
1785 else if (htab->elf.dynamic_sections_created
1786 && h->plt.refcount > 0)
0451c93c
MS		 1787 {
1788 /* Make sure this symbol is output as a dynamic symbol.
1789 Undefined weak syms won't yet be marked as dynamic. */
1790 if (h->dynindx == -1
f5385ebf 1791 && !h->forced_local)
0451c93c 1792 {
c152c796 1793 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1794 return FALSE;
0451c93c
MS		 1795 }
1796
82058a73 1797 if (info->shared
4ec72bde 1798 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1799 {
f41345a7 1800 asection *s = htab->elf.splt;
0451c93c
MS		 1801
1802 /* If this is the first .plt entry, make room for the special
1803 first entry. */
eea6121a
AM		 1804 if (s->size == 0)
1805 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1806
eea6121a 1807 h->plt.offset = s->size;
0451c93c
MS		 1808
1809 /* If this symbol is not defined in a regular file, and we are
1810 not generating a shared library, then set the symbol to this
1811 location in the .plt. This is required to make function
1812 pointers compare as equal between the normal executable and
1813 the shared library. */
1814 if (! info->shared
f5385ebf 1815 && !h->def_regular)
0451c93c
MS		 1816 {
1817 h->root.u.def.section = s;
1818 h->root.u.def.value = h->plt.offset;
1819 }
ec338859 1820
0451c93c 1821 /* Make room for this entry. */
eea6121a 1822 s->size += PLT_ENTRY_SIZE;
ec338859 1823
0451c93c
MS		 1824 /* We also need to make an entry in the .got.plt section, which
1825 will be placed in the .got section by the linker script. */
f41345a7 1826 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1827
1828 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1829 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1830 }
1831 else
1832 {
1833 h->plt.offset = (bfd_vma) -1;
f5385ebf 1834 h->needs_plt = 0;
5236c819 1835 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c 1836 }
ec338859 1837 }
0451c93c
MS		 1838 else
1839 {
1840 h->plt.offset = (bfd_vma) -1;
f5385ebf 1841 h->needs_plt = 0;
5236c819 1842 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
ec338859
AM		 1843 }
1844
69fc87f1
MS		 1845 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1846 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1847 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1848 we can save the dynamic TLS relocation. */
1849 if (h->got.refcount > 0
1850 && !info->shared
1851 && h->dynindx == -1
1852 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
0451c93c 1853 {
69fc87f1
MS		 1854 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1855 /* For the GOTIE access without a literal pool entry the offset has
1856 to be stored somewhere. The immediate value in the instruction
1857 is not bit enough so the value is stored in the got. */
1858 {
f41345a7
AK		 1859 h->got.offset = htab->elf.sgot->size;
1860 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1861 }
1862 else
1863 h->got.offset = (bfd_vma) -1;
1864 }
1865 else if (h->got.refcount > 0)
1866 {
0451c93c 1867 asection *s;
b34976b6 1868 bfd_boolean dyn;
69fc87f1 1869 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1870
1871 /* Make sure this symbol is output as a dynamic symbol.
1872 Undefined weak syms won't yet be marked as dynamic. */
1873 if (h->dynindx == -1
f5385ebf 1874 && !h->forced_local)
0451c93c 1875 {
c152c796 1876 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1877 return FALSE;
0451c93c
MS		 1878 }
1879
f41345a7 1880 s = htab->elf.sgot;
eea6121a
AM		 1881 h->got.offset = s->size;
1882 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1883 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1884 if (tls_type == GOT_TLS_GD)
eea6121a 1885 s->size += GOT_ENTRY_SIZE;
0451c93c 1886 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1887 /* R_390_TLS_IE32 needs one dynamic relocation,
1888 R_390_TLS_GD32 needs one if local symbol and two if global. */
1889 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1890 || tls_type >= GOT_TLS_IE)
f41345a7 1891 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1 1892 else if (tls_type == GOT_TLS_GD)
f41345a7 1893 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela);
82058a73
MS		 1894 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1895 || h->root.type != bfd_link_hash_undefweak)
1896 && (info->shared
1897 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1898 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1899 }
1900 else
1901 h->got.offset = (bfd_vma) -1;
1902
0451c93c 1903 if (eh->dyn_relocs == NULL)
b34976b6 1904 return TRUE;
0451c93c
MS		 1905
1906 /* In the shared -Bsymbolic case, discard space allocated for
1907 dynamic pc-relative relocs against symbols which turn out to be
1908 defined in regular objects. For the normal shared case, discard
1909 space for pc-relative relocs that have become local due to symbol
1910 visibility changes. */
1911
1912 if (info->shared)
1913 {
8c21ca21 1914 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1915 {
00d8c7a9 1916 struct elf_dyn_relocs **pp;
0451c93c
MS		 1917
1918 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1919 {
1920 p->count -= p->pc_count;
1921 p->pc_count = 0;
1922 if (p->count == 0)
1923 *pp = p->next;
1924 else
1925 pp = &p->next;
1926 }
1927 }
82058a73
MS		 1928
1929 /* Also discard relocs on undefined weak syms with non-default
1930 visibility. */
22d606e9 1931 if (eh->dyn_relocs != NULL
82058a73 1932 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 1933 {
1934 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1935 eh->dyn_relocs = NULL;
1936
1937 /* Make sure undefined weak symbols are output as a dynamic
1938 symbol in PIEs. */
1939 else if (h->dynindx == -1
1940 && !h->forced_local)
1941 {
1942 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1943 return FALSE;
1944 }
1945 }
0451c93c 1946 }
64285810 1947 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1948 {
1949 /* For the non-shared case, discard space for relocs against
1950 symbols which turn out to need copy relocs or are not
1951 dynamic. */
1952
f5385ebf
AM		 1953 if (!h->non_got_ref
1954 && ((h->def_dynamic
1955 && !h->def_regular)
0451c93c
MS		 1956 || (htab->elf.dynamic_sections_created
1957 && (h->root.type == bfd_link_hash_undefweak
1958 || h->root.type == bfd_link_hash_undefined))))
1959 {
1960 /* Make sure this symbol is output as a dynamic symbol.
1961 Undefined weak syms won't yet be marked as dynamic. */
1962 if (h->dynindx == -1
f5385ebf 1963 && !h->forced_local)
0451c93c 1964 {
c152c796 1965 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1966 return FALSE;
0451c93c
MS		 1967 }
1968
1969 /* If that succeeded, we know we'll be keeping all the
1970 relocs. */
1971 if (h->dynindx != -1)
1972 goto keep;
1973 }
1974
1975 eh->dyn_relocs = NULL;
1976
ec338859 1977 keep: ;
0451c93c
MS		 1978 }
1979
1980 /* Finally, allocate space. */
1981 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1982 {
1983 asection *sreloc = elf_section_data (p->sec)->sreloc;
ae9a127f 1984
eea6121a 1985 sreloc->size += p->count * sizeof (Elf32_External_Rela);
0451c93c
MS		 1986 }
1987
b34976b6 1988 return TRUE;
0451c93c
MS		 1989}
1990
1991/* Find any dynamic relocs that apply to read-only sections. */
1992
b34976b6 1993static bfd_boolean
2c3fc389 1994readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1995{
1996 struct elf_s390_link_hash_entry *eh;
00d8c7a9 1997 struct elf_dyn_relocs *p;
0451c93c
MS		 1998
1999 eh = (struct elf_s390_link_hash_entry *) h;
2000 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2001 {
2002 asection *s = p->sec->output_section;
2003
2004 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2005 {
2006 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2007
2008 info->flags |= DF_TEXTREL;
2009
2010 /* Not an error, just cut short the traversal. */
b34976b6 2011 return FALSE;
0451c93c
MS		 2012 }
2013 }
b34976b6 2014 return TRUE;
0451c93c
MS		 2015}
2016
a85d7ed0
NC		 2017/* Set the sizes of the dynamic sections. */
2018
b34976b6 2019static bfd_boolean
2c3fc389
NC		 2020elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2021 struct bfd_link_info *info)
a85d7ed0 2022{
0451c93c 2023 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2024 bfd *dynobj;
2025 asection *s;
b34976b6 2026 bfd_boolean relocs;
0451c93c 2027 bfd *ibfd;
a85d7ed0 2028
0451c93c
MS		 2029 htab = elf_s390_hash_table (info);
2030 dynobj = htab->elf.dynobj;
2031 if (dynobj == NULL)
2032 abort ();
a85d7ed0 2033
0451c93c 2034 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2035 {
2036 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2037 if (info->executable)
a85d7ed0 2038 {
3d4d4302 2039 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 2040 if (s == NULL)
2041 abort ();
eea6121a 2042 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 2043 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2044 }
2045 }
a85d7ed0 2046
0451c93c
MS		 2047 /* Set up .got offsets for local syms, and space for local dynamic
2048 relocs. */
2049 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
a85d7ed0 2050 {
0451c93c
MS		 2051 bfd_signed_vma *local_got;
2052 bfd_signed_vma *end_local_got;
69fc87f1 2053 char *local_tls_type;
0451c93c
MS		 2054 bfd_size_type locsymcount;
2055 Elf_Internal_Shdr *symtab_hdr;
2056 asection *srela;
470b557a
AK		 2057 struct plt_entry *local_plt;
2058 unsigned int i;
a85d7ed0 2059
0ffa91dd 2060 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 2061 continue;
2062
0451c93c 2063 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 2064 {
00d8c7a9 2065 struct elf_dyn_relocs *p;
0451c93c 2066
6edfbbad 2067 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 2068 {
ec338859
AM		 2069 if (!bfd_is_abs_section (p->sec)
2070 && bfd_is_abs_section (p->sec->output_section))
2071 {
2072 /* Input section has been discarded, either because
2073 it is a copy of a linkonce section or due to
2074 linker script /DISCARD/, so we'll be discarding
2075 the relocs too. */
2076 }
248866a8 2077 else if (p->count != 0)
ec338859
AM		 2078 {
2079 srela = elf_section_data (p->sec)->sreloc;
eea6121a 2080 srela->size += p->count * sizeof (Elf32_External_Rela);
248866a8
AM		 2081 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2082 info->flags |= DF_TEXTREL;
ec338859 2083 }
a85d7ed0
NC		 2084 }
2085 }
0451c93c
MS		 2086
2087 local_got = elf_local_got_refcounts (ibfd);
2088 if (!local_got)
2089 continue;
2090
0ffa91dd 2091 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 2092 locsymcount = symtab_hdr->sh_info;
2093 end_local_got = local_got + locsymcount;
69fc87f1 2094 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 2095 s = htab->elf.sgot;
2096 srela = htab->elf.srelgot;
69fc87f1 2097 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 2098 {
0451c93c 2099 if (*local_got > 0)
a85d7ed0 2100 {
eea6121a
AM		 2101 *local_got = s->size;
2102 s->size += GOT_ENTRY_SIZE;
69fc87f1 2103 if (*local_tls_type == GOT_TLS_GD)
eea6121a 2104 s->size += GOT_ENTRY_SIZE;
0451c93c 2105 if (info->shared)
eea6121a 2106 srela->size += sizeof (Elf32_External_Rela);
a85d7ed0
NC		 2107 }
2108 else
0451c93c
MS		 2109 *local_got = (bfd_vma) -1;
2110 }
470b557a
AK		 2111 local_plt = elf_s390_local_plt (ibfd);
2112 for (i = 0; i < symtab_hdr->sh_info; i++)
2113 {
2114 if (local_plt[i].plt.refcount > 0)
2115 {
2116 local_plt[i].plt.offset = htab->elf.iplt->size;
2117 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2118 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2119 htab->elf.irelplt->size += RELA_ENTRY_SIZE;
2120 }
2121 else
2122 local_plt[i].plt.offset = (bfd_vma) -1;
2123 }
0451c93c
MS		 2124 }
2125
69fc87f1
MS		 2126 if (htab->tls_ldm_got.refcount > 0)
2127 {
2128 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2129 relocs. */
f41345a7
AK		 2130 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2131 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2132 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1
MS		 2133 }
2134 else
2135 htab->tls_ldm_got.offset = -1;
2136
0451c93c
MS		 2137 /* Allocate global sym .plt and .got entries, and space for global
2138 sym dynamic relocs. */
2c3fc389 2139 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 2140
2141 /* We now have determined the sizes of the various dynamic sections.
2142 Allocate memory for them. */
b34976b6 2143 relocs = FALSE;
0451c93c
MS		 2144 for (s = dynobj->sections; s != NULL; s = s->next)
2145 {
2146 if ((s->flags & SEC_LINKER_CREATED) == 0)
2147 continue;
2148
f41345a7
AK		 2149 if (s == htab->elf.splt
2150 || s == htab->elf.sgot
2151 || s == htab->elf.sgotplt
470b557a
AK		 2152 || s == htab->sdynbss
2153 || s == htab->elf.iplt
2154 || s == htab->elf.igotplt
2155 || s == htab->irelifunc)
0451c93c
MS		 2156 {
2157 /* Strip this section if we don't need it; see the
2158 comment below. */
a85d7ed0 2159 }
0112cd26 2160 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 2161 {
eea6121a 2162 if (s->size != 0)
b34976b6 2163 relocs = TRUE;
ec338859 2164
0451c93c
MS		 2165 /* We use the reloc_count field as a counter if we need
2166 to copy relocs into the output file. */
2167 s->reloc_count = 0;
2168 }
2169 else
a85d7ed0
NC		 2170 {
2171 /* It's not one of our sections, so don't allocate space. */
2172 continue;
2173 }
2174
eea6121a 2175 if (s->size == 0)
a85d7ed0 2176 {
0451c93c
MS		 2177 /* If we don't need this section, strip it from the
2178 output file. This is to handle .rela.bss and
2179 .rela.plt. We must create it in
2180 create_dynamic_sections, because it must be created
2181 before the linker maps input sections to output
2182 sections. The linker does that before
2183 adjust_dynamic_symbol is called, and it is that
2184 function which decides whether anything needs to go
2185 into these sections. */
2186
8423293d 2187 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 2188 continue;
2189 }
2190
c456f082
AM		 2191 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2192 continue;
2193
0451c93c
MS		 2194 /* Allocate memory for the section contents. We use bfd_zalloc
2195 here in case unused entries are not reclaimed before the
2196 section's contents are written out. This should not happen,
2197 but this way if it does, we get a R_390_NONE reloc instead
2198 of garbage. */
eea6121a 2199 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 2200 if (s->contents == NULL)
b34976b6 2201 return FALSE;
a85d7ed0 2202 }
ec338859 2203
0451c93c 2204 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2205 {
2206 /* Add some entries to the .dynamic section. We fill in the
2207 values later, in elf_s390_finish_dynamic_sections, but we
2208 must add the entries now so that we get the correct size for
2209 the .dynamic section. The DT_DEBUG entry is filled in by the
2210 dynamic linker and used by the debugger. */
dc810e39 2211#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2212 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
ec338859 2213
36af4a4e 2214 if (info->executable)
a85d7ed0 2215 {
dc810e39 2216 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2217 return FALSE;
a85d7ed0 2218 }
ec338859 2219
f41345a7 2220 if (htab->elf.splt->size != 0)
a85d7ed0 2221 {
dc810e39
AM		 2222 if (!add_dynamic_entry (DT_PLTGOT, 0)
2223 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2224 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2225 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2226 return FALSE;
a85d7ed0 2227 }
ec338859 2228
a85d7ed0 2229 if (relocs)
26e41594
AM		 2230 {
2231 if (!add_dynamic_entry (DT_RELA, 0)
2232 || !add_dynamic_entry (DT_RELASZ, 0)
2233 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 2234 return FALSE;
a85d7ed0 2235
0451c93c
MS		 2236 /* If any dynamic relocs apply to a read-only section,
2237 then we need a DT_TEXTREL entry. */
248866a8 2238 if ((info->flags & DF_TEXTREL) == 0)
2c3fc389 2239 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
ec338859 2240
0451c93c
MS		 2241 if ((info->flags & DF_TEXTREL) != 0)
2242 {
2243 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2244 return FALSE;
0451c93c 2245 }
a85d7ed0
NC		 2246 }
2247 }
dc810e39 2248#undef add_dynamic_entry
ec338859 2249
b34976b6 2250 return TRUE;
a85d7ed0
NC		 2251}
2252
69fc87f1
MS		 2253/* Return the base VMA address which should be subtracted from real addresses
2254 when resolving @dtpoff relocation.
2255 This is PT_TLS segment p_vaddr. */
2256
2257static bfd_vma
2c3fc389 2258dtpoff_base (struct bfd_link_info *info)
69fc87f1 2259{
e1918d23
AM		 2260 /* If tls_sec is NULL, we should have signalled an error already. */
2261 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2262 return 0;
e1918d23 2263 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2264}
2265
2266/* Return the relocation value for @tpoff relocation
2267 if STT_TLS virtual address is ADDRESS. */
2268
2269static bfd_vma
2c3fc389 2270tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2271{
e1918d23 2272 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2273
e1918d23
AM		 2274 /* If tls_sec is NULL, we should have signalled an error already. */
2275 if (htab->tls_sec == NULL)
69fc87f1 2276 return 0;
e1918d23 2277 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2278}
2279
2280/* Complain if TLS instruction relocation is against an invalid
2281 instruction. */
2282
2283static void
2c3fc389
NC		 2284invalid_tls_insn (bfd *input_bfd,
2285 asection *input_section,
2286 Elf_Internal_Rela *rel)
69fc87f1
MS		 2287{
2288 reloc_howto_type *howto;
2289
2290 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2291 (*_bfd_error_handler)
d003868e
AM		 2292 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2293 input_bfd,
2294 input_section,
69fc87f1
MS		 2295 (long) rel->r_offset,
2296 howto->name);
77df2968 2297 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2298}
2299
a85d7ed0
NC		 2300/* Relocate a 390 ELF section. */
2301
b34976b6 2302static bfd_boolean
2c3fc389
NC		 2303elf_s390_relocate_section (bfd *output_bfd,
2304 struct bfd_link_info *info,
2305 bfd *input_bfd,
2306 asection *input_section,
2307 bfd_byte *contents,
2308 Elf_Internal_Rela *relocs,
2309 Elf_Internal_Sym *local_syms,
2310 asection **local_sections)
a85d7ed0 2311{
0451c93c 2312 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2313 Elf_Internal_Shdr *symtab_hdr;
2314 struct elf_link_hash_entry **sym_hashes;
2315 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2316 Elf_Internal_Rela *rel;
2317 Elf_Internal_Rela *relend;
2318
0ffa91dd
NC		 2319 BFD_ASSERT (is_s390_elf (input_bfd));
2320
0451c93c 2321 htab = elf_s390_hash_table (info);
0ffa91dd 2322 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2323 sym_hashes = elf_sym_hashes (input_bfd);
2324 local_got_offsets = elf_local_got_offsets (input_bfd);
2325
a85d7ed0
NC		 2326 rel = relocs;
2327 relend = relocs + input_section->reloc_count;
2328 for (; rel < relend; rel++)
2329 {
5236c819 2330 unsigned int r_type;
a85d7ed0
NC		 2331 reloc_howto_type *howto;
2332 unsigned long r_symndx;
2333 struct elf_link_hash_entry *h;
2334 Elf_Internal_Sym *sym;
2335 asection *sec;
0451c93c 2336 bfd_vma off;
a85d7ed0 2337 bfd_vma relocation;
b34976b6 2338 bfd_boolean unresolved_reloc;
a85d7ed0 2339 bfd_reloc_status_type r;
69fc87f1 2340 int tls_type;
470b557a 2341 asection *base_got = htab->elf.sgot;
ec338859 2342
a85d7ed0
NC		 2343 r_type = ELF32_R_TYPE (rel->r_info);
2344 if (r_type == (int) R_390_GNU_VTINHERIT
26e41594
AM		 2345 || r_type == (int) R_390_GNU_VTENTRY)
2346 continue;
5236c819 2347 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2348 {
2349 bfd_set_error (bfd_error_bad_value);
b34976b6 2350 return FALSE;
a85d7ed0 2351 }
ec338859 2352
b491616a 2353 howto = elf_howto_table + r_type;
a85d7ed0 2354 r_symndx = ELF32_R_SYM (rel->r_info);
5236c819 2355
a85d7ed0
NC		 2356 h = NULL;
2357 sym = NULL;
2358 sec = NULL;
b34976b6 2359 unresolved_reloc = FALSE;
a85d7ed0
NC		 2360 if (r_symndx < symtab_hdr->sh_info)
2361 {
2362 sym = local_syms + r_symndx;
2363 sec = local_sections[r_symndx];
470b557a
AK		 2364 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2365 {
2366 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2367 if (local_plt == NULL)
2368 return FALSE;
2369
2370 /* Address of the PLT slot. */
2371 relocation = (htab->elf.iplt->output_section->vma
2372 + htab->elf.iplt->output_offset
2373 + local_plt[r_symndx].plt.offset);
2374
2375 switch (r_type)
2376 {
31db78f6
AK		 2377 case R_390_PLTOFF16:
2378 case R_390_PLTOFF32:
2379 relocation -= htab->elf.sgot->output_section->vma;
2380 break;
470b557a
AK		 2381 case R_390_GOTPLT12:
2382 case R_390_GOTPLT16:
2383 case R_390_GOTPLT20:
2384 case R_390_GOTPLT32:
2385 case R_390_GOTPLTENT:
2386 case R_390_GOT12:
2387 case R_390_GOT16:
2388 case R_390_GOT20:
2389 case R_390_GOT32:
2390 case R_390_GOTENT:
2391 {
2392 /* Write the PLT slot address into the GOT slot. */
2393 bfd_put_32 (output_bfd, relocation,
2394 htab->elf.sgot->contents +
2395 local_got_offsets[r_symndx]);
2396 relocation = (local_got_offsets[r_symndx] +
2397 htab->elf.sgot->output_offset);
2398
2399 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2400 relocation += htab->elf.sgot->output_section->vma;
2401 break;
2402 }
2403 default:
2404 break;
2405 }
2406 /* The output section is needed later in
2407 finish_dynamic_section when creating the dynamic
2408 relocation. */
2409 local_plt[r_symndx].sec = sec;
2410 goto do_relocation;
2411 }
2412 else
2413 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2414 }
2415 else
2416 {
560e09e9 2417 bfd_boolean warned 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,
2422 unresolved_reloc, warned);
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 }
2539 }
0451c93c 2540 else
b34976b6 2541 unresolved_reloc = FALSE;
26e41594
AM		 2542 }
2543 else
2544 {
0451c93c
MS		 2545 if (local_got_offsets == NULL)
2546 abort ();
a85d7ed0 2547
26e41594 2548 off = local_got_offsets[r_symndx];
a85d7ed0 2549
26e41594
AM		 2550 /* The offset must always be a multiple of 4. We use
2551 the least significant bit to record whether we have
2552 already generated the necessary reloc. */
2553 if ((off & 1) != 0)
2554 off &= ~1;
2555 else
2556 {
2557 bfd_put_32 (output_bfd, relocation,
f41345a7 2558 htab->elf.sgot->contents + off);
a85d7ed0 2559
26e41594
AM		 2560 if (info->shared)
2561 {
2562 asection *srelgot;
2563 Elf_Internal_Rela outrel;
947216bf 2564 bfd_byte *loc;
a85d7ed0 2565
f41345a7 2566 srelgot = htab->elf.srelgot;
0451c93c
MS		 2567 if (srelgot == NULL)
2568 abort ();
a85d7ed0 2569
f41345a7
AK		 2570 outrel.r_offset = (htab->elf.sgot->output_section->vma
2571 + htab->elf.sgot->output_offset
26e41594
AM		 2572 + off);
2573 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2574 outrel.r_addend = relocation;
947216bf
AM		 2575 loc = srelgot->contents;
2576 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
26e41594
AM		 2577 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2578 }
a85d7ed0 2579
26e41594
AM		 2580 local_got_offsets[r_symndx] |= 1;
2581 }
2582 }
a85d7ed0 2583
0451c93c
MS		 2584 if (off >= (bfd_vma) -2)
2585 abort ();
a85d7ed0 2586
470b557a 2587 relocation = base_got->output_offset + off;
befc3abb 2588
ae9a127f
NC		 2589 /* For @GOTENT the relocation is against the offset between
2590 the instruction and the symbols entry in the GOT and not
2591 between the start of the GOT and the symbols entry. We
2592 add the vma of the GOT to get the correct value. */
5236c819
MS		 2593 if ( r_type == R_390_GOTENT
2594 || r_type == R_390_GOTPLTENT)
470b557a 2595 relocation += base_got->output_section->vma;
befc3abb 2596
26e41594 2597 break;
dc810e39 2598
5236c819 2599 case R_390_GOTOFF16:
26e41594
AM		 2600 case R_390_GOTOFF32:
2601 /* Relocation is relative to the start of the global offset
2602 table. */
2603
2604 /* Note that sgot->output_offset is not involved in this
2605 calculation. We always want the start of .got. If we
2606 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2607 permitted by the ABI, we might have to change this
2608 calculation. */
f41345a7 2609 relocation -= htab->elf.sgot->output_section->vma;
26e41594
AM		 2610 break;
2611
2612 case R_390_GOTPC:
befc3abb 2613 case R_390_GOTPCDBL:
26e41594 2614 /* Use global offset table as symbol value. */
f41345a7 2615 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2616 unresolved_reloc = FALSE;
26e41594 2617 break;
a85d7ed0 2618
fb798c50 2619 case R_390_PLT12DBL:
26e41594 2620 case R_390_PLT16DBL:
fb798c50 2621 case R_390_PLT24DBL:
26e41594
AM		 2622 case R_390_PLT32DBL:
2623 case R_390_PLT32:
2624 /* Relocation is to the entry for this symbol in the
2625 procedure linkage table. */
a85d7ed0 2626
26e41594
AM		 2627 /* Resolve a PLT32 reloc against a local symbol directly,
2628 without using the procedure linkage table. */
2629 if (h == NULL)
2630 break;
a85d7ed0 2631
26e41594 2632 if (h->plt.offset == (bfd_vma) -1
470b557a 2633 || (htab->elf.splt == NULL && htab->elf.iplt == NULL))
26e41594
AM		 2634 {
2635 /* We didn't make a PLT entry for this symbol. This
2636 happens when statically linking PIC code, or when
2637 using -Bsymbolic. */
2638 break;
2639 }
2640
470b557a
AK		 2641 if (s390_is_ifunc_symbol_p (h))
2642 relocation = (htab->elf.iplt->output_section->vma
2643 + htab->elf.iplt->output_offset
2644 + h->plt.offset);
2645 else
2646 relocation = (htab->elf.splt->output_section->vma
2647 + htab->elf.splt->output_offset
2648 + h->plt.offset);
b34976b6 2649 unresolved_reloc = FALSE;
26e41594 2650 break;
a85d7ed0 2651
5236c819
MS		 2652 case R_390_PLTOFF16:
2653 case R_390_PLTOFF32:
26e41594
AM		 2654 /* Relocation is to the entry for this symbol in the
2655 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2656
2657 /* For local symbols or if we didn't make a PLT entry for
2658 this symbol resolve the symbol directly. */
31db78f6 2659 if (h == NULL
5236c819 2660 || h->plt.offset == (bfd_vma) -1
31db78f6 2661 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2662 {
f41345a7 2663 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS		 2664 break;
2665 }
2666
470b557a
AK		 2667 if (s390_is_ifunc_symbol_p (h))
2668 relocation = (htab->elf.iplt->output_section->vma
2669 + htab->elf.iplt->output_offset
2670 + h->plt.offset
2671 - htab->elf.sgot->output_section->vma);
2672 else
2673 relocation = (htab->elf.splt->output_section->vma
2674 + htab->elf.splt->output_offset
2675 + h->plt.offset
2676 - htab->elf.sgot->output_section->vma);
5236c819 2677 unresolved_reloc = FALSE;
26e41594
AM		 2678 break;
2679
2680 case R_390_8:
2681 case R_390_16:
2682 case R_390_32:
2683 case R_390_PC16:
fb798c50 2684 case R_390_PC12DBL:
26e41594 2685 case R_390_PC16DBL:
fb798c50 2686 case R_390_PC24DBL:
26e41594
AM		 2687 case R_390_PC32DBL:
2688 case R_390_PC32:
470b557a
AK		 2689 if (h != NULL
2690 && s390_is_ifunc_symbol_p (h)
2691 && h->def_regular)
2692 {
2693 if (!info->shared || !h->non_got_ref)
2694 {
2695 /* For a non-shared object STT_GNU_IFUNC symbol must
2696 go through PLT. */
2697 relocation = (htab->elf.iplt->output_section->vma
2698 + htab->elf.iplt->output_offset
2699 + h ->plt.offset);
2700 goto do_relocation;
2701 }
2702 else
2703 {
2704 /* For shared objects a runtime relocation is needed. */
2705
2706 Elf_Internal_Rela outrel;
2707 asection *sreloc;
2708
2709 /* Need a dynamic relocation to get the real function
2710 address. */
2711 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2712 info,
2713 input_section,
2714 rel->r_offset);
2715 if (outrel.r_offset == (bfd_vma) -1
2716 || outrel.r_offset == (bfd_vma) -2)
2717 abort ();
2718
2719 outrel.r_offset += (input_section->output_section->vma
2720 + input_section->output_offset);
2721
2722 if (h->dynindx == -1
2723 || h->forced_local
2724 || info->executable)
2725 {
2726 /* This symbol is resolved locally. */
2727 outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
2728 outrel.r_addend = (h->root.u.def.value
2729 + h->root.u.def.section->output_section->vma
2730 + h->root.u.def.section->output_offset);
2731 }
2732 else
2733 {
2734 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2735 outrel.r_addend = 0;
2736 }
2737
2738 sreloc = htab->elf.irelifunc;
2739 elf_append_rela (output_bfd, sreloc, &outrel);
2740
2741 /* If this reloc is against an external symbol, we
2742 do not want to fiddle with the addend. Otherwise,
2743 we need to include the symbol value so that it
2744 becomes an addend for the dynamic reloc. For an
2745 internal symbol, we have updated addend. */
2746 continue;
2747 }
2748 }
2749
b1e24c02 2750 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2751 break;
2752
26e41594 2753 if ((info->shared
82058a73
MS		 2754 && (h == NULL
2755 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2756 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2757 && ((r_type != R_390_PC16
fb798c50 2758 && r_type != R_390_PC12DBL
0451c93c 2759 && r_type != R_390_PC16DBL
fb798c50 2760 && r_type != R_390_PC24DBL
befc3abb 2761 && r_type != R_390_PC32DBL
0451c93c 2762 && r_type != R_390_PC32)
8c21ca21 2763 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810
MS		 2764 || (ELIMINATE_COPY_RELOCS
2765 && !info->shared
0451c93c
MS		 2766 && h != NULL
2767 && h->dynindx != -1
f5385ebf
AM		 2768 && !h->non_got_ref
2769 && ((h->def_dynamic
2770 && !h->def_regular)
0451c93c
MS		 2771 || h->root.type == bfd_link_hash_undefweak
2772 || h->root.type == bfd_link_hash_undefined)))
26e41594
AM		 2773 {
2774 Elf_Internal_Rela outrel;
2775 bfd_boolean skip, relocate;
0451c93c 2776 asection *sreloc;
947216bf 2777 bfd_byte *loc;
ec338859 2778
0451c93c
MS		 2779 /* When generating a shared object, these relocations
2780 are copied into the output file to be resolved at run
2781 time. */
ec338859 2782
26e41594
AM		 2783 skip = FALSE;
2784 relocate = FALSE;
ec338859 2785
c629eae0
JJ		 2786 outrel.r_offset =
2787 _bfd_elf_section_offset (output_bfd, info, input_section,
2788 rel->r_offset);
2789 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2790 skip = TRUE;
0bb2d96a 2791 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2792 skip = TRUE, relocate = TRUE;
26e41594
AM		 2793 outrel.r_offset += (input_section->output_section->vma
2794 + input_section->output_offset);
ec338859 2795
26e41594 2796 if (skip)
0bb2d96a 2797 memset (&outrel, 0, sizeof outrel);
26e41594 2798 else if (h != NULL
0451c93c
MS		 2799 && h->dynindx != -1
2800 && (r_type == R_390_PC16
fb798c50 2801 || r_type == R_390_PC12DBL
0451c93c 2802 || r_type == R_390_PC16DBL
fb798c50 2803 || r_type == R_390_PC24DBL
befc3abb 2804 || r_type == R_390_PC32DBL
0451c93c
MS		 2805 || r_type == R_390_PC32
2806 || !info->shared
8c21ca21 2807 || !SYMBOLIC_BIND (info, h)
f5385ebf 2808 || !h->def_regular))
26e41594
AM		 2809 {
2810 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
27018c3f 2811 outrel.r_addend = rel->r_addend;
26e41594
AM		 2812 }
2813 else
2814 {
0451c93c 2815 /* This symbol is local, or marked to become local. */
90ced0dd 2816 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2817 if (r_type == R_390_32)
2818 {
2819 relocate = TRUE;
2820 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2821 }
2822 else
2823 {
2824 long sindx;
2825
90ced0dd 2826 if (bfd_is_abs_section (sec))
b5727d75
MS		 2827 sindx = 0;
2828 else if (sec == NULL || sec->owner == NULL)
2829 {
2830 bfd_set_error(bfd_error_bad_value);
2831 return FALSE;
2832 }
2833 else
2834 {
2835 asection *osec;
2836
2837 osec = sec->output_section;
2838 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2839 if (sindx == 0)
2840 {
2841 osec = htab->elf.text_index_section;
2842 sindx = elf_section_data (osec)->dynindx;
2843 }
2844 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2845
2846 /* We are turning this relocation into one
2847 against a section symbol, so subtract out
2848 the output section's address but not the
2849 offset of the input section in the output
2850 section. */
90ced0dd 2851 outrel.r_addend -= osec->vma;
b5727d75
MS		 2852 }
2853 outrel.r_info = ELF32_R_INFO (sindx, r_type);
b5727d75 2854 }
26e41594 2855 }
ec338859 2856
0451c93c
MS		 2857 sreloc = elf_section_data (input_section)->sreloc;
2858 if (sreloc == NULL)
2859 abort ();
ec338859 2860
947216bf
AM		 2861 loc = sreloc->contents;
2862 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 2863 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
ec338859 2864
26e41594
AM		 2865 /* If this reloc is against an external symbol, we do
2866 not want to fiddle with the addend. Otherwise, we
2867 need to include the symbol value so that it becomes
2868 an addend for the dynamic reloc. */
2869 if (! relocate)
2870 continue;
2871 }
0451c93c 2872 break;
ec338859 2873
69fc87f1
MS		 2874 /* Relocations for tls literal pool entries. */
2875 case R_390_TLS_IE32:
2876 if (info->shared)
2877 {
2878 Elf_Internal_Rela outrel;
2879 asection *sreloc;
2880 bfd_byte *loc;
2881
2882 outrel.r_offset = rel->r_offset
2883 + input_section->output_section->vma
2884 + input_section->output_offset;
2885 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2886 sreloc = elf_section_data (input_section)->sreloc;
2887 if (sreloc == NULL)
2888 abort ();
2889 loc = sreloc->contents;
2890 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2891 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2892 }
ae9a127f 2893 /* Fall through. */
69fc87f1
MS		 2894
2895 case R_390_TLS_GD32:
2896 case R_390_TLS_GOTIE32:
2897 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2898 tls_type = GOT_UNKNOWN;
2899 if (h == NULL && local_got_offsets)
2900 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2901 else if (h != NULL)
2902 {
2903 tls_type = elf_s390_hash_entry(h)->tls_type;
2904 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2905 r_type = R_390_TLS_LE32;
2906 }
2907 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2908 r_type = R_390_TLS_IE32;
2909
2910 if (r_type == R_390_TLS_LE32)
2911 {
2912 /* This relocation gets optimized away by the local exec
2913 access optimization. */
2914 BFD_ASSERT (! unresolved_reloc);
2915 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2916 contents + rel->r_offset);
2917 continue;
2918 }
2919
f41345a7 2920 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2921 abort ();
2922
2923 if (h != NULL)
2924 off = h->got.offset;
2925 else
2926 {
2927 if (local_got_offsets == NULL)
2928 abort ();
2929
2930 off = local_got_offsets[r_symndx];
2931 }
2932
2933 emit_tls_relocs:
2934
2935 if ((off & 1) != 0)
2936 off &= ~1;
26e41594 2937 else
69fc87f1
MS		 2938 {
2939 Elf_Internal_Rela outrel;
2940 bfd_byte *loc;
2941 int dr_type, indx;
2942
f41345a7 2943 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2944 abort ();
2945
f41345a7
AK		 2946 outrel.r_offset = (htab->elf.sgot->output_section->vma
2947 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2948
2949 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2950 if (r_type == R_390_TLS_GD32)
2951 dr_type = R_390_TLS_DTPMOD;
2952 else
2953 dr_type = R_390_TLS_TPOFF;
2954 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2955 outrel.r_addend = relocation - dtpoff_base (info);
2956 else
2957 outrel.r_addend = 0;
2958 outrel.r_info = ELF32_R_INFO (indx, dr_type);
f41345a7
AK		 2959 loc = htab->elf.srelgot->contents;
2960 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2961 * sizeof (Elf32_External_Rela);
2962 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2963
2964 if (r_type == R_390_TLS_GD32)
2965 {
2966 if (indx == 0)
2967 {
26e41594 2968 BFD_ASSERT (! unresolved_reloc);
69fc87f1
MS		 2969 bfd_put_32 (output_bfd,
2970 relocation - dtpoff_base (info),
f41345a7 2971 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2972 }
2973 else
2974 {
2975 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
2976 outrel.r_offset += GOT_ENTRY_SIZE;
2977 outrel.r_addend = 0;
f41345a7 2978 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 2979 loc += sizeof (Elf32_External_Rela);
2980 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2981 }
2982 }
2983
2984 if (h != NULL)
2985 h->got.offset |= 1;
2986 else
2987 local_got_offsets[r_symndx] |= 1;
2988 }
2989
2990 if (off >= (bfd_vma) -2)
2991 abort ();
2992 if (r_type == ELF32_R_TYPE (rel->r_info))
2993 {
f41345a7 2994 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2995 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
f41345a7 2996 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2997 unresolved_reloc = FALSE;
2998 }
2999 else
3000 {
f41345a7 3001 bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 3002 contents + rel->r_offset);
3003 continue;
3004 }
3005 break;
3006
3007 case R_390_TLS_GOTIE12:
bd1ea41b 3008 case R_390_TLS_GOTIE20:
69fc87f1
MS		 3009 case R_390_TLS_IEENT:
3010 if (h == NULL)
3011 {
3012 if (local_got_offsets == NULL)
3013 abort();
3014 off = local_got_offsets[r_symndx];
3015 if (info->shared)
3016 goto emit_tls_relocs;
3017 }
3018 else
3019 {
3020 off = h->got.offset;
3021 tls_type = elf_s390_hash_entry(h)->tls_type;
3022 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
3023 goto emit_tls_relocs;
3024 }
3025
f41345a7 3026 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3027 abort ();
3028
3029 BFD_ASSERT (! unresolved_reloc);
3030 bfd_put_32 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 3031 htab->elf.sgot->contents + off);
3032 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3033 if (r_type == R_390_TLS_IEENT)
f41345a7 3034 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3035 unresolved_reloc = FALSE;
3036 break;
3037
3038 case R_390_TLS_LDM32:
3039 if (! info->shared)
3040 /* The literal pool entry this relocation refers to gets ignored
3041 by the optimized code of the local exec model. Do nothing
3042 and the value will turn out zero. */
3043 continue;
3044
f41345a7 3045 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3046 abort ();
3047
3048 off = htab->tls_ldm_got.offset;
3049 if (off & 1)
3050 off &= ~1;
3051 else
3052 {
3053 Elf_Internal_Rela outrel;
3054 bfd_byte *loc;
3055
f41345a7 3056 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 3057 abort ();
3058
f41345a7
AK		 3059 outrel.r_offset = (htab->elf.sgot->output_section->vma
3060 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 3061
3062 bfd_put_32 (output_bfd, 0,
f41345a7 3063 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3064 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
3065 outrel.r_addend = 0;
f41345a7
AK		 3066 loc = htab->elf.srelgot->contents;
3067 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3068 * sizeof (Elf32_External_Rela);
3069 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3070 htab->tls_ldm_got.offset |= 1;
3071 }
f41345a7 3072 relocation = htab->elf.sgot->output_offset + off;
26e41594 3073 unresolved_reloc = FALSE;
69fc87f1
MS		 3074 break;
3075
3076 case R_390_TLS_LE32:
3077 if (info->shared)
3078 {
3079 /* Linking a shared library with non-fpic code requires
3080 a R_390_TLS_TPOFF relocation. */
3081 Elf_Internal_Rela outrel;
3082 asection *sreloc;
3083 bfd_byte *loc;
3084 int indx;
3085
3086 outrel.r_offset = rel->r_offset
3087 + input_section->output_section->vma
3088 + input_section->output_offset;
3089 if (h != NULL && h->dynindx != -1)
3090 indx = h->dynindx;
3091 else
3092 indx = 0;
3093 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
3094 if (indx == 0)
3095 outrel.r_addend = relocation - dtpoff_base (info);
3096 else
3097 outrel.r_addend = 0;
3098 sreloc = elf_section_data (input_section)->sreloc;
3099 if (sreloc == NULL)
3100 abort ();
3101 loc = sreloc->contents;
3102 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3103 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3104 }
3105 else
3106 {
3107 BFD_ASSERT (! unresolved_reloc);
3108 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3109 contents + rel->r_offset);
3110 }
3111 continue;
3112
3113 case R_390_TLS_LDO32:
de8bee76 3114 if (info->shared || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 3115 relocation -= dtpoff_base (info);
3116 else
3117 /* When converting LDO to LE, we must negate. */
3118 relocation = -tpoff (info, relocation);
3119 break;
3120
3121 /* Relocations for tls instructions. */
3122 case R_390_TLS_LOAD:
3123 case R_390_TLS_GDCALL:
3124 case R_390_TLS_LDCALL:
3125 tls_type = GOT_UNKNOWN;
3126 if (h == NULL && local_got_offsets)
3127 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3128 else if (h != NULL)
3129 tls_type = elf_s390_hash_entry(h)->tls_type;
3130
3131 if (tls_type == GOT_TLS_GD)
3132 continue;
3133
3134 if (r_type == R_390_TLS_LOAD)
3135 {
3136 if (!info->shared && (h == NULL || h->dynindx == -1))
3137 {
3138 /* IE->LE transition. Four valid cases:
3139 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
3140 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
3141 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
3142 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3143 unsigned int insn, ry;
3144
3145 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3146 ry = 0;
3147 if ((insn & 0xff00f000) == 0x58000000)
3148 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
3149 ry = (insn & 0x000f0000);
3150 else if ((insn & 0xff0f0000) == 0x58000000)
3151 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
3152 ry = (insn & 0x0000f000) << 4;
3153 else if ((insn & 0xff00f000) == 0x5800c000)
3154 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
3155 ry = (insn & 0x000f0000);
3156 else if ((insn & 0xff0f0000) == 0x580c0000)
3157 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3158 ry = (insn & 0x0000f000) << 4;
3159 else
3160 invalid_tls_insn (input_bfd, input_section, rel);
3161 insn = 0x18000700 | (insn & 0x00f00000) | ry;
3162 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3163 }
3164 }
3165 else if (r_type == R_390_TLS_GDCALL)
3166 {
3167 unsigned int insn;
3168
3169 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3170 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 3171 (insn & 0xffff0000) != 0xc0e50000 &&
3172 (insn & 0xff000000) != 0x0d000000)
69fc87f1
MS		 3173 invalid_tls_insn (input_bfd, input_section, rel);
3174 if (!info->shared && (h == NULL || h->dynindx == -1))
77df2968 3175 {
d0ddfe27
AK		 3176 if ((insn & 0xff000000) == 0x0d000000)
3177 {
3178 /* GD->LE transition.
3179 basr rx, ry -> nopr r7 */
3180 insn = 0x07070000 | (insn & 0xffff);
3181 }
3182 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 3183 {
3184 /* GD->LE transition.
3185 bas %r14,0(%rx,%r13) -> bc 0,0 */
3186 insn = 0x47000000;
3187 }
3188 else
3189 {
3190 /* GD->LE transition.
d0ddfe27 3191 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 3192 insn = 0xc0040000;
3193 bfd_put_16 (output_bfd, 0x0000,
3194 contents + rel->r_offset + 4);
3195 }
3196 }
69fc87f1 3197 else
77df2968 3198 {
d0ddfe27
AK		 3199 /* If basr is used in the pic case to invoke
3200 _tls_get_offset, something went wrong before. */
3201 if ((insn & 0xff000000) == 0x0d000000)
3202 invalid_tls_insn (input_bfd, input_section, rel);
3203
77df2968
MS		 3204 if ((insn & 0xff000000) == 0x4d000000)
3205 {
3206 /* GD->IE transition.
3207 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3208 insn = 0x5822c000;
3209 }
3210 else
3211 {
3212 /* GD->IE transition.
3213 brasl %r14,__tls_get_addr@plt ->
3214 l %r2,0(%r2,%r12) ; bcr 0,0 */
3215 insn = 0x5822c000;
3216 bfd_put_16 (output_bfd, 0x0700,
3217 contents + rel->r_offset + 4);
3218 }
3219 }
69fc87f1
MS		 3220 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3221 }
3222 else if (r_type == R_390_TLS_LDCALL)
3223 {
3224 if (!info->shared)
3225 {
3226 unsigned int insn;
3227
3228 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3229 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 3230 (insn & 0xffff0000) != 0xc0e50000 &&
3231 (insn & 0xff000000) != 0x0d000000)
69fc87f1 3232 invalid_tls_insn (input_bfd, input_section, rel);
d0ddfe27
AK		 3233
3234 if ((insn & 0xff000000) == 0x0d000000)
3235 {
3236 /* LD->LE transition.
3237 basr rx, ry -> nopr r7 */
3238 insn = 0x07070000 | (insn & 0xffff);
3239 }
3240 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 3241 {
3242 /* LD->LE transition.
3243 bas %r14,0(%rx,%r13) -> bc 0,0 */
3244 insn = 0x47000000;
3245 }
3246 else
3247 {
3248 /* LD->LE transition.
d0ddfe27 3249 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 3250 insn = 0xc0040000;
3251 bfd_put_16 (output_bfd, 0x0000,
3252 contents + rel->r_offset + 4);
3253 }
69fc87f1
MS		 3254 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3255 }
3256 }
3257 continue;
3258
0451c93c
MS		 3259 default:
3260 break;
3261 }
ec338859 3262
239e1f3a
AM		 3263 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3264 because such sections are not SEC_ALLOC and thus ld.so will
3265 not process them. */
0451c93c 3266 if (unresolved_reloc
239e1f3a 3267 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3268 && h->def_dynamic)
3269 && _bfd_elf_section_offset (output_bfd, info, input_section,
3270 rel->r_offset) != (bfd_vma) -1)
0451c93c 3271 (*_bfd_error_handler)
843fe662 3272 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3273 input_bfd,
3274 input_section,
0451c93c 3275 (long) rel->r_offset,
843fe662 3276 howto->name,
0451c93c 3277 h->root.root.string);
ec338859 3278
470b557a
AK		 3279 do_relocation:
3280
fb798c50
AK		 3281 /* When applying a 24 bit reloc we need to start one byte
3282 earlier. Otherwise the 32 bit get/put bfd operations might
3283 access a byte after the actual section. */
3284 if (r_type == R_390_PC24DBL
3285 || r_type == R_390_PLT24DBL)
3286 rel->r_offset--;
3287
bd1ea41b
MS		 3288 if (r_type == R_390_20
3289 || r_type == R_390_GOT20
3290 || r_type == R_390_GOTPLT20
3291 || r_type == R_390_TLS_GOTIE20)
3292 {
3293 relocation += rel->r_addend;
3294 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3295 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3296 contents, rel->r_offset,
3297 relocation, 0);
3298 }
3299 else
3300 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3301 contents, rel->r_offset,
3302 relocation, rel->r_addend);
ec338859 3303
a85d7ed0
NC		 3304 if (r != bfd_reloc_ok)
3305 {
0451c93c 3306 const char *name;
ec338859 3307
0451c93c
MS		 3308 if (h != NULL)
3309 name = h->root.root.string;
3310 else
a85d7ed0 3311 {
0451c93c
MS		 3312 name = bfd_elf_string_from_elf_section (input_bfd,
3313 symtab_hdr->sh_link,
3314 sym->st_name);
3315 if (name == NULL)
b34976b6 3316 return FALSE;
0451c93c
MS		 3317 if (*name == '\0')
3318 name = bfd_section_name (input_bfd, sec);
3319 }
ec338859 3320
0451c93c
MS		 3321 if (r == bfd_reloc_overflow)
3322 {
ec338859 3323
0451c93c 3324 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 3325 (info, (h ? &h->root : NULL), name, howto->name,
3326 (bfd_vma) 0, input_bfd, input_section,
3327 rel->r_offset)))
b34976b6 3328 return FALSE;
0451c93c
MS		 3329 }
3330 else
3331 {
3332 (*_bfd_error_handler)
d003868e
AM		 3333 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3334 input_bfd, input_section,
0451c93c 3335 (long) rel->r_offset, name, (int) r);
b34976b6 3336 return FALSE;
a85d7ed0
NC		 3337 }
3338 }
3339 }
ec338859 3340
b34976b6 3341 return TRUE;
a85d7ed0
NC		 3342}
3343
470b557a
AK		 3344/* Generate the PLT slots together with the dynamic relocations needed
3345 for IFUNC symbols. */
3346
3347static void
3348elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3349 struct bfd_link_info *info,
3350 struct elf_link_hash_entry *h,
3351 struct elf_s390_link_hash_table *htab,
3352 bfd_vma iplt_offset,
3353 bfd_vma resolver_address)
3354{
3355 bfd_vma iplt_index;
3356 bfd_vma got_offset;
3357 bfd_vma igotiplt_offset;
3358 Elf_Internal_Rela rela;
3359 bfd_byte *loc;
3360 asection *plt, *gotplt, *relplt;
3361 bfd_vma relative_offset;
3362
3363 if (htab->elf.iplt == NULL
3364 || htab->elf.igotplt == NULL
3365 || htab->elf.irelplt == NULL)
3366 abort ();
3367
3368 gotplt = htab->elf.igotplt;
3369 relplt = htab->elf.irelplt;
3370
3371 /* Index of the PLT slot within iplt section. */
3372 iplt_index = iplt_offset / PLT_ENTRY_SIZE;
3373 plt = htab->elf.iplt;
3374 /* Offset into the igot.plt section. */
3375 igotiplt_offset = iplt_index * GOT_ENTRY_SIZE;
3376 /* Offset into the got section. */
3377 got_offset = igotiplt_offset + gotplt->output_offset;
3378
3379 /* S390 uses halfwords for relative branch calc! */
3380 relative_offset = - (plt->output_offset +
3381 (PLT_ENTRY_SIZE * iplt_index) + 18) / 2;
3382/* If offset is > 32768, branch to a previous branch
3383 390 can only handle +-64 K jumps. */
3384 if ( -32768 > (int) relative_offset )
3385 relative_offset
3386 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3387
3388 /* Fill in the entry in the procedure linkage table. */
3389 if (!info->shared)
3390 {
3391 memcpy (plt->contents + iplt_offset, elf_s390_plt_entry,
3392 PLT_ENTRY_SIZE);
3393
3394 /* Adjust jump to the first plt entry. */
3395 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3396 plt->contents + iplt_offset + 20);
3397
3398 /* Push the GOT offset field. */
3399 bfd_put_32 (output_bfd,
3400 (gotplt->output_section->vma
3401 + got_offset),
3402 plt->contents + iplt_offset + 24);
3403 }
3404 else if (got_offset < 4096)
3405 {
3406 /* The GOT offset is small enough to be used directly as
3407 displacement. */
3408 memcpy (plt->contents + iplt_offset,
3409 elf_s390_plt_pic12_entry,
3410 PLT_ENTRY_SIZE);
3411
3412 /* Put in the GOT offset as displacement value. The 0xc000
3413 value comes from the first word of the plt entry. Look
3414 at the elf_s390_plt_pic16_entry content. */
3415 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3416 plt->contents + iplt_offset + 2);
3417
3418 /* Adjust the jump to the first plt entry. */
3419 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3420 plt->contents + iplt_offset + 20);
3421 }
3422 else if (got_offset < 32768)
3423 {
3424 /* The GOT offset is too big for a displacement but small
3425 enough to be a signed 16 bit immediate value as it can be
3426 used in an lhi instruction. */
3427 memcpy (plt->contents + iplt_offset,
3428 elf_s390_plt_pic16_entry,
3429 PLT_ENTRY_SIZE);
3430
3431 /* Put in the GOT offset for the lhi instruction. */
3432 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3433 plt->contents + iplt_offset + 2);
3434
3435 /* Adjust the jump to the first plt entry. */
3436 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3437 plt->contents + iplt_offset + 20);
3438 }
3439 else
3440 {
3441 memcpy (plt->contents + iplt_offset,
3442 elf_s390_plt_pic_entry,
3443 PLT_ENTRY_SIZE);
3444
3445 /* Adjust the jump to the first plt entry. */
3446 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3447 plt->contents + iplt_offset + 20);
3448
3449 /* Push the GOT offset field. */
3450 bfd_put_32 (output_bfd, got_offset,
3451 plt->contents + iplt_offset + 24);
3452 }
3453 /* Insert offset into reloc. table here. */
3454 bfd_put_32 (output_bfd, relplt->output_offset +
3455 iplt_index * RELA_ENTRY_SIZE,
3456 plt->contents + iplt_offset + 28);
3457
3458 /* Fill in the entry in the global offset table.
3459 Points to instruction after GOT offset. */
3460 bfd_put_32 (output_bfd,
3461 (plt->output_section->vma
3462 + plt->output_offset
3463 + iplt_offset
3464 + 12),
3465 gotplt->contents + igotiplt_offset);
3466
3467 /* Fill in the entry in the .rela.plt section. */
3468 rela.r_offset = gotplt->output_section->vma + got_offset;
3469
3470 if (!h
3471 || h->dynindx == -1
3472 || ((info->executable
3473 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3474 && h->def_regular))
3475 {
3476 /* The symbol can be locally resolved. */
3477 rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
3478 rela.r_addend = resolver_address;
3479 }
3480 else
3481 {
3482 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3483 rela.r_addend = 0;
3484 }
3485
3486 loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE;
3487 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3488}
3489
a85d7ed0
NC		 3490/* Finish up dynamic symbol handling. We set the contents of various
3491 dynamic sections here. */
3492
b34976b6 3493static bfd_boolean
2c3fc389
NC		 3494elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3495 struct bfd_link_info *info,
3496 struct elf_link_hash_entry *h,
3497 Elf_Internal_Sym *sym)
a85d7ed0 3498{
0451c93c 3499 struct elf_s390_link_hash_table *htab;
470b557a 3500 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
ec338859 3501
0451c93c 3502 htab = elf_s390_hash_table (info);
ec338859 3503
a85d7ed0
NC		 3504 if (h->plt.offset != (bfd_vma) -1)
3505 {
0451c93c
MS		 3506 bfd_vma plt_index;
3507 bfd_vma got_offset;
a85d7ed0 3508 Elf_Internal_Rela rela;
947216bf 3509 bfd_byte *loc;
a85d7ed0 3510 bfd_vma relative_offset;
ec338859 3511
a85d7ed0 3512 /* This symbol has an entry in the procedure linkage table. Set
26e41594 3513 it up. */
470b557a 3514 if (s390_is_ifunc_symbol_p (h))
0451c93c 3515 {
470b557a
AK		 3516 /* If we can resolve the IFUNC symbol locally we generate an
3517 IRELATIVE reloc. */
3518 elf_s390_finish_ifunc_symbol (output_bfd, info, h, htab, h->plt.offset,
3519 eh->ifunc_resolver_address +
3520 eh->ifunc_resolver_section->output_offset +
3521 eh->ifunc_resolver_section->output_section->vma);
3522 /* Fallthrough. Handling of explicit GOT slots of IFUNC
3523 symbols is below. */
0451c93c 3524 }
a85d7ed0 3525 else
0451c93c 3526 {
470b557a
AK		 3527 if (h->dynindx == -1
3528 || htab->elf.splt == NULL
3529 || htab->elf.sgotplt == NULL
3530 || htab->elf.srelplt == NULL)
3531 abort ();
9aa17453 3532
470b557a
AK		 3533 /* Calc. index no.
3534 Current offset - size first entry / entry size. */
3535 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9aa17453 3536
470b557a
AK		 3537 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3538 addr & GOT addr. */
3539 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3540
470b557a
AK		 3541 /* S390 uses halfwords for relative branch calc! */
3542 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3543 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3544 /* If offset is > 32768, branch to a previous branch
3545 390 can only handle +-64 K jumps. */
3546 if ( -32768 > (int) relative_offset )
3547 relative_offset
3548 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
ec338859 3549
470b557a
AK		 3550 /* Fill in the entry in the procedure linkage table. */
3551 if (!info->shared)
3552 {
3553 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry,
3554 PLT_ENTRY_SIZE);
3555
3556 /* Adjust jump to the first plt entry. */
3557 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3558 htab->elf.splt->contents + h->plt.offset + 20);
3559
3560 /* Push the GOT offset field. */
3561 bfd_put_32 (output_bfd,
3562 (htab->elf.sgotplt->output_section->vma
3563 + htab->elf.sgotplt->output_offset
3564 + got_offset),
3565 htab->elf.splt->contents + h->plt.offset + 24);
3566 }
3567 else if (got_offset < 4096)
3568 {
3569 /* The GOT offset is small enough to be used directly as
3570 displacement. */
3571 memcpy (htab->elf.splt->contents + h->plt.offset,
3572 elf_s390_plt_pic12_entry,
3573 PLT_ENTRY_SIZE);
3574
3575 /* Put in the GOT offset as displacement value. The 0xc000
3576 value comes from the first word of the plt entry. Look
3577 at the elf_s390_plt_pic16_entry content. */
3578 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3579 htab->elf.splt->contents + h->plt.offset + 2);
3580
3581 /* Adjust the jump to the first plt entry. */
3582 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3583 htab->elf.splt->contents + h->plt.offset + 20);
3584 }
3585 else if (got_offset < 32768)
3586 {
3587 /* The GOT offset is too big for a displacement but small
3588 enough to be a signed 16 bit immediate value as it can be
3589 used in an lhi instruction. */
3590 memcpy (htab->elf.splt->contents + h->plt.offset,
3591 elf_s390_plt_pic16_entry,
3592 PLT_ENTRY_SIZE);
3593
3594 /* Put in the GOT offset for the lhi instruction. */
3595 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3596 htab->elf.splt->contents + h->plt.offset + 2);
3597
3598 /* Adjust the jump to the first plt entry. */
3599 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3600 htab->elf.splt->contents + h->plt.offset + 20);
3601 }
3602 else
3603 {
3604 memcpy (htab->elf.splt->contents + h->plt.offset,
3605 elf_s390_plt_pic_entry,
3606 PLT_ENTRY_SIZE);
3607
3608 /* Adjust the jump to the first plt entry. */
3609 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3610 htab->elf.splt->contents + h->plt.offset + 20);
3611
3612 /* Push the GOT offset field. */
3613 bfd_put_32 (output_bfd, got_offset,
3614 htab->elf.splt->contents + h->plt.offset + 24);
3615 }
3616 /* Insert offset into reloc. table here. */
3617 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3618 htab->elf.splt->contents + h->plt.offset + 28);
3619
3620 /* Fill in the entry in the global offset table.
3621 Points to instruction after GOT offset. */
3622 bfd_put_32 (output_bfd,
3623 (htab->elf.splt->output_section->vma
3624 + htab->elf.splt->output_offset
3625 + h->plt.offset
3626 + 12),
3627 htab->elf.sgotplt->contents + got_offset);
3628
3629 /* Fill in the entry in the .rela.plt section. */
3630 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3631 + htab->elf.sgotplt->output_offset
3632 + got_offset);
3633 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3634 rela.r_addend = 0;
3635 loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3636 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3637
3638 if (!h->def_regular)
3639 {
3640 /* Mark the symbol as undefined, rather than as defined in
3641 the .plt section. Leave the value alone. This is a clue
3642 for the dynamic linker, to make function pointer
3643 comparisons work between an application and shared
3644 library. */
3645 sym->st_shndx = SHN_UNDEF;
3646 }
a85d7ed0
NC		 3647 }
3648 }
ec338859 3649
69fc87f1
MS		 3650 if (h->got.offset != (bfd_vma) -1
3651 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3652 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3653 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3654 {
a85d7ed0 3655 Elf_Internal_Rela rela;
947216bf 3656 bfd_byte *loc;
a85d7ed0
NC		 3657
3658 /* This symbol has an entry in the global offset table. Set it
26e41594 3659 up. */
a85d7ed0 3660
f41345a7 3661 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3662 abort ();
a85d7ed0 3663
f41345a7
AK		 3664 rela.r_offset = (htab->elf.sgot->output_section->vma
3665 + htab->elf.sgot->output_offset
dc810e39 3666 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0
NC		 3667
3668 /* If this is a static link, or it is a -Bsymbolic link and the
3669 symbol is defined locally or was forced to be local because
3670 of a version file, we just want to emit a RELATIVE reloc.
3671 The entry in the global offset table will already have been
3672 initialized in the relocate_section function. */
470b557a
AK		 3673 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3674 {
3675 if (info->shared)
3676 {
3677 /* An explicit GOT slot usage needs GLOB_DAT. If the
3678 symbol references local the implicit got.iplt slot
3679 will be used and the IRELATIVE reloc has been created
3680 above. */
3681 goto do_glob_dat;
3682 }
3683 else
3684 {
3685 /* For non-shared objects explicit GOT slots must be
3686 filled with the PLT slot address for pointer
3687 equality reasons. */
3688 bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma
3689 + htab->elf.iplt->output_offset
3690 + h->plt.offset),
3691 htab->elf.sgot->contents + h->got.offset);
3692 return TRUE;
3693 }
3694 }
3695 else if (info->shared
8c21ca21 3696 && SYMBOL_REFERENCES_LOCAL (info, h))
0451c93c 3697 {
470b557a
AK		 3698 /* If this is a static link, or it is a -Bsymbolic link and
3699 the symbol is defined locally or was forced to be local
3700 because of a version file, we just want to emit a
3701 RELATIVE reloc. The entry in the global offset table
3702 will already have been initialized in the
3703 relocate_section function. */
8c21ca21
AK		 3704 if (!h->def_regular)
3705 return FALSE;
0451c93c
MS		 3706 BFD_ASSERT((h->got.offset & 1) != 0);
3707 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3708 rela.r_addend = (h->root.u.def.value
26e41594
AM		 3709 + h->root.u.def.section->output_section->vma
3710 + h->root.u.def.section->output_offset);
3711 }
a85d7ed0
NC		 3712 else
3713 {
3714 BFD_ASSERT((h->got.offset & 1) == 0);
470b557a 3715 do_glob_dat:
f41345a7 3716 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3717 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
26e41594
AM		 3718 rela.r_addend = 0;
3719 }
a85d7ed0 3720
f41345a7
AK		 3721 loc = htab->elf.srelgot->contents;
3722 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3723 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3724 }
3725
f5385ebf 3726 if (h->needs_copy)
a85d7ed0 3727 {
a85d7ed0 3728 Elf_Internal_Rela rela;
947216bf 3729 bfd_byte *loc;
a85d7ed0
NC		 3730
3731 /* This symbols needs a copy reloc. Set it up. */
3732
0451c93c
MS		 3733 if (h->dynindx == -1
3734 || (h->root.type != bfd_link_hash_defined
3735 && h->root.type != bfd_link_hash_defweak)
3736 || htab->srelbss == NULL)
3737 abort ();
a85d7ed0
NC		 3738
3739 rela.r_offset = (h->root.u.def.value
3740 + h->root.u.def.section->output_section->vma
3741 + h->root.u.def.section->output_offset);
3742 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3743 rela.r_addend = 0;
947216bf
AM		 3744 loc = htab->srelbss->contents;
3745 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3746 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3747 }
3748
3749 /* Mark some specially defined symbols as absolute. */
9637f6ef 3750 if (h == htab->elf.hdynamic
22edb2f1
RS		 3751 || h == htab->elf.hgot
3752 || h == htab->elf.hplt)
a85d7ed0
NC		 3753 sym->st_shndx = SHN_ABS;
3754
b34976b6 3755 return TRUE;
a85d7ed0
NC		 3756}
3757
0451c93c
MS		 3758/* Used to decide how to sort relocs in an optimal manner for the
3759 dynamic linker, before writing them out. */
3760
3761static enum elf_reloc_type_class
7e612e98
AM		 3762elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3763 const asection *rel_sec ATTRIBUTE_UNUSED,
3764 const Elf_Internal_Rela *rela)
0451c93c
MS		 3765{
3766 switch ((int) ELF32_R_TYPE (rela->r_info))
3767 {
3768 case R_390_RELATIVE:
3769 return reloc_class_relative;
3770 case R_390_JMP_SLOT:
3771 return reloc_class_plt;
3772 case R_390_COPY:
3773 return reloc_class_copy;
3774 default:
3775 return reloc_class_normal;
3776 }
3777}
3778
a85d7ed0
NC		 3779/* Finish up the dynamic sections. */
3780
b34976b6 3781static bfd_boolean
2c3fc389
NC		 3782elf_s390_finish_dynamic_sections (bfd *output_bfd,
3783 struct bfd_link_info *info)
a85d7ed0 3784{
0451c93c 3785 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3786 bfd *dynobj;
3787 asection *sdyn;
470b557a
AK		 3788 bfd *ibfd;
3789 unsigned int i;
a85d7ed0 3790
0451c93c
MS		 3791 htab = elf_s390_hash_table (info);
3792 dynobj = htab->elf.dynobj;
3d4d4302 3793 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3794
0451c93c 3795 if (htab->elf.dynamic_sections_created)
a85d7ed0 3796 {
a85d7ed0
NC		 3797 Elf32_External_Dyn *dyncon, *dynconend;
3798
f41345a7 3799 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3800 abort ();
a85d7ed0
NC		 3801
3802 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 3803 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3804 for (; dyncon < dynconend; dyncon++)
3805 {
3806 Elf_Internal_Dyn dyn;
a85d7ed0 3807 asection *s;
ec338859 3808
a85d7ed0 3809 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3810
a85d7ed0
NC		 3811 switch (dyn.d_tag)
3812 {
3813 default:
0451c93c 3814 continue;
ec338859 3815
a85d7ed0 3816 case DT_PLTGOT:
f41345a7 3817 dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma;
0451c93c 3818 break;
ec338859 3819
a85d7ed0 3820 case DT_JMPREL:
f41345a7 3821 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
a85d7ed0
NC		 3822 break;
3823
3824 case DT_PLTRELSZ:
f41345a7 3825 s = htab->elf.srelplt->output_section;
eea6121a 3826 dyn.d_un.d_val = s->size;
a85d7ed0
NC		 3827 break;
3828 }
0451c93c
MS		 3829
3830 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3831 }
3832
3833 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3834 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0 3835 {
f41345a7 3836 memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
26e41594 3837 if (info->shared)
0451c93c 3838 {
f41345a7 3839 memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry,
9aa17453
AK		 3840 PLT_FIRST_ENTRY_SIZE);
3841 }
26e41594 3842 else
9aa17453 3843 {
f41345a7 3844 memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry,
9aa17453 3845 PLT_FIRST_ENTRY_SIZE);
26e41594 3846 bfd_put_32 (output_bfd,
f41345a7
AK		 3847 htab->elf.sgotplt->output_section->vma
3848 + htab->elf.sgotplt->output_offset,
3849 htab->elf.splt->contents + 24);
26e41594 3850 }
f41345a7 3851 elf_section_data (htab->elf.splt->output_section)
0451c93c 3852 ->this_hdr.sh_entsize = 4;
a85d7ed0
NC		 3853 }
3854
3855 }
3856
f41345a7 3857 if (htab->elf.sgotplt)
a85d7ed0 3858 {
0451c93c 3859 /* Fill in the first three entries in the global offset table. */
f41345a7 3860 if (htab->elf.sgotplt->size > 0)
0451c93c
MS		 3861 {
3862 bfd_put_32 (output_bfd,
3863 (sdyn == NULL ? (bfd_vma) 0
3864 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3865 htab->elf.sgotplt->contents);
0451c93c 3866 /* One entry for shared object struct ptr. */
f41345a7 3867 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4);
0451c93c 3868 /* One entry for _dl_runtime_resolve. */
f41345a7 3869 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3870 }
a85d7ed0 3871
f41345a7 3872 elf_section_data (htab->elf.sgotplt->output_section)
0451c93c
MS		 3873 ->this_hdr.sh_entsize = 4;
3874 }
470b557a
AK		 3875 /* Finish dynamic symbol for local IFUNC symbols. */
3876 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3877 {
3878 struct plt_entry *local_plt;
3879 Elf_Internal_Sym *isym;
3880 Elf_Internal_Shdr *symtab_hdr;
3881
3882 symtab_hdr = &elf_symtab_hdr (ibfd);
3883
3884 local_plt = elf_s390_local_plt (ibfd);
3885 if (local_plt != NULL)
3886 for (i = 0; i < symtab_hdr->sh_info; i++)
3887 {
3888 if (local_plt[i].plt.offset != (bfd_vma) -1)
3889 {
3890 asection *sec = local_plt[i].sec;
3891 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3892 if (isym == NULL)
3893 return FALSE;
3894
3895 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3896 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3897 local_plt[i].plt.offset,
3898 isym->st_value
3899 + sec->output_section->vma
3900 + sec->output_offset);
3901
3902 }
3903 }
3904 }
b34976b6 3905 return TRUE;
a85d7ed0
NC		 3906}
3907
b34976b6 3908static bfd_boolean
2c3fc389 3909elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note)
979f4a38
NC		 3910{
3911 int offset;
eea6121a 3912 unsigned int size;
979f4a38
NC		 3913
3914 switch (note->descsz)
3915 {
3916 default:
b34976b6 3917 return FALSE;
979f4a38
NC		 3918
3919 case 224: /* S/390 Linux. */
3920 /* pr_cursig */
228e534f 3921 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
979f4a38
NC		 3922
3923 /* pr_pid */
228e534f 3924 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
979f4a38
NC		 3925
3926 /* pr_reg */
3927 offset = 72;
eea6121a 3928 size = 144;
979f4a38
NC		 3929 break;
3930 }
3931
3932 /* Make a ".reg/999" section. */
3933 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 3934 size, note->descpos + offset);
979f4a38
NC		 3935}
3936
4c45e5c9
JJ		 3937/* Return address for Ith PLT stub in section PLT, for relocation REL
3938 or (bfd_vma) -1 if it should not be included. */
3939
3940static bfd_vma
3941elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3942 const arelent *rel ATTRIBUTE_UNUSED)
3943{
3944 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3945}
3946
55786da2
AK		 3947static bfd_boolean
3948elf32_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3949{
3950 elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
3951 return TRUE;
3952}
3953
4c45e5c9 3954
a85d7ed0
NC		 3955#define TARGET_BIG_SYM bfd_elf32_s390_vec
3956#define TARGET_BIG_NAME "elf32-s390"
3957#define ELF_ARCH bfd_arch_s390
ae95ffa6 3958#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 3959#define ELF_MACHINE_CODE EM_S390
3960#define ELF_MACHINE_ALT1 EM_S390_OLD
3961#define ELF_MAXPAGESIZE 0x1000
3962
3963#define elf_backend_can_gc_sections 1
51b64d56 3964#define elf_backend_can_refcount 1
a85d7ed0
NC		 3965#define elf_backend_want_got_plt 1
3966#define elf_backend_plt_readonly 1
3967#define elf_backend_want_plt_sym 0
3968#define elf_backend_got_header_size 12
b491616a 3969#define elf_backend_rela_normal 1
a85d7ed0 3970
26e41594 3971#define elf_info_to_howto elf_s390_info_to_howto
a85d7ed0 3972
a85d7ed0
NC		 3973#define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
3974#define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
3975#define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
157090f7 3976#define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
a85d7ed0 3977
55786da2
AK		 3978#define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
3979
a85d7ed0 3980#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
26e41594 3981#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c
MS		 3982#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3983#define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
a85d7ed0
NC		 3984#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3985#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
26e41594
AM		 3986#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3987#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
0451c93c 3988#define elf_backend_reloc_type_class elf_s390_reloc_type_class
26e41594 3989#define elf_backend_relocate_section elf_s390_relocate_section
a85d7ed0 3990#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 3991#define elf_backend_init_index_section _bfd_elf_init_1_index_section
979f4a38 3992#define elf_backend_grok_prstatus elf_s390_grok_prstatus
4c45e5c9 3993#define elf_backend_plt_sym_val elf_s390_plt_sym_val
470b557a 3994#define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
a85d7ed0 3995
69fc87f1 3996#define bfd_elf32_mkobject elf_s390_mkobject
26e41594 3997#define elf_backend_object_p elf_s390_object_p
a85d7ed0
NC		 3998
3999#include "elf32-target.h"
GDB Binutils - Deliverables
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