]> git.ipfire.org Git - thirdparty/binutils-gdb.git/blame - bfd/elf64-s390.c
projects / thirdparty / binutils-gdb.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
* configure.ac: Apply 2012-09-10 change to config.in here.
[thirdparty/binutils-gdb.git] / bfd / elf64-s390.c
CommitLineData
a85d7ed0 1/* IBM S/390-specific support for 64-bit ELF
4dfe6ac6 2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
1d7e9d18 3 2010, 2011, 2012 Free Software Foundation, Inc.
a85d7ed0
NC		 4 Contributed Martin Schwidefsky (schwidefsky@de.ibm.com).
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
30/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
31 from smaller values. Start with zero, widen, *then* decrement. */
32#define MINUS_ONE (((bfd_vma)0) - 1)
33
2c3fc389
NC		 34static bfd_reloc_status_type
35s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
36 asection *, bfd *, char **);
37static bfd_reloc_status_type
38s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
39 asection *, bfd *, char **);
40
a85d7ed0
NC		 41/* The relocation "howto" table. */
42static reloc_howto_type elf_howto_table[] =
43{
44 HOWTO (R_390_NONE, /* type */
45 0, /* rightshift */
46 0, /* size (0 = byte, 1 = short, 2 = long) */
47 0, /* bitsize */
b34976b6 48 FALSE, /* pc_relative */
a85d7ed0
NC		 49 0, /* bitpos */
50 complain_overflow_dont, /* complain_on_overflow */
51 bfd_elf_generic_reloc, /* special_function */
52 "R_390_NONE", /* name */
b34976b6 53 FALSE, /* partial_inplace */
a85d7ed0
NC		 54 0, /* src_mask */
55 0, /* dst_mask */
b34976b6
AM		 56 FALSE), /* pcrel_offset */
57
5236c819
MS		 58 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
59 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
60 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
61 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
62 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
63 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
64 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
65 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
66 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
67 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
15f8604d 68 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 69 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
70 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
71 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
72 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
73 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
74 HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
75 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE),
76 HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
77 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE),
78 HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
79 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE),
80 HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
81 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE),
82 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
83 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE),
84 HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
85 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE),
86 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
87 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
88 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
89 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
90 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
91 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
92 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
93 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
94 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
95 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
96 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
97 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
98 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
99 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
100 HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
101 bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE),
102 HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
103 bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
104 HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
105 bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
106 HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
107 bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
108 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
109 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE),
110 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
111 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
112 HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
113 bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE),
114 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
115 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
116 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
117 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
118 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
119 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
120 HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
121 bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE),
122 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
123 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE),
124 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
125 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
126 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
128 HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
129 bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE),
69fc87f1
MS		 130 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
131 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
132 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
133 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
134 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
135 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
136 EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */
137 HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
139 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
140 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
141 EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */
142 HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
143 bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
144 EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */
145 HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
147 EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */
148 HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
150 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
152 EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */
153 HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
154 bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
155 EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */
156 HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
157 bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
158 HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
159 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
160 HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
161 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
162 HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
bd1ea41b
MS		 164 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
165 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
166 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
167 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
168 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
169 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
170 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
171 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
470b557a
AK		 172 HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
173 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE),
174
a85d7ed0
NC		 175};
176
177/* GNU extension to record C++ vtable hierarchy. */
178static reloc_howto_type elf64_s390_vtinherit_howto =
b34976b6 179 HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
a85d7ed0 180static reloc_howto_type elf64_s390_vtentry_howto =
b34976b6 181 HOWTO (R_390_GNU_VTENTRY, 0,4,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
a85d7ed0
NC		 182
183static reloc_howto_type *
2c3fc389
NC		 184elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
185 bfd_reloc_code_real_type code)
a85d7ed0 186{
0451c93c
MS		 187 switch (code)
188 {
189 case BFD_RELOC_NONE:
190 return &elf_howto_table[(int) R_390_NONE];
191 case BFD_RELOC_8:
192 return &elf_howto_table[(int) R_390_8];
193 case BFD_RELOC_390_12:
194 return &elf_howto_table[(int) R_390_12];
195 case BFD_RELOC_16:
196 return &elf_howto_table[(int) R_390_16];
197 case BFD_RELOC_32:
198 return &elf_howto_table[(int) R_390_32];
199 case BFD_RELOC_CTOR:
200 return &elf_howto_table[(int) R_390_32];
201 case BFD_RELOC_32_PCREL:
202 return &elf_howto_table[(int) R_390_PC32];
203 case BFD_RELOC_390_GOT12:
204 return &elf_howto_table[(int) R_390_GOT12];
205 case BFD_RELOC_32_GOT_PCREL:
206 return &elf_howto_table[(int) R_390_GOT32];
207 case BFD_RELOC_390_PLT32:
208 return &elf_howto_table[(int) R_390_PLT32];
209 case BFD_RELOC_390_COPY:
210 return &elf_howto_table[(int) R_390_COPY];
211 case BFD_RELOC_390_GLOB_DAT:
212 return &elf_howto_table[(int) R_390_GLOB_DAT];
213 case BFD_RELOC_390_JMP_SLOT:
214 return &elf_howto_table[(int) R_390_JMP_SLOT];
215 case BFD_RELOC_390_RELATIVE:
216 return &elf_howto_table[(int) R_390_RELATIVE];
217 case BFD_RELOC_32_GOTOFF:
5236c819 218 return &elf_howto_table[(int) R_390_GOTOFF32];
0451c93c
MS		 219 case BFD_RELOC_390_GOTPC:
220 return &elf_howto_table[(int) R_390_GOTPC];
221 case BFD_RELOC_390_GOT16:
222 return &elf_howto_table[(int) R_390_GOT16];
223 case BFD_RELOC_16_PCREL:
224 return &elf_howto_table[(int) R_390_PC16];
225 case BFD_RELOC_390_PC16DBL:
226 return &elf_howto_table[(int) R_390_PC16DBL];
227 case BFD_RELOC_390_PLT16DBL:
228 return &elf_howto_table[(int) R_390_PLT16DBL];
0451c93c
MS		 229 case BFD_RELOC_390_PC32DBL:
230 return &elf_howto_table[(int) R_390_PC32DBL];
231 case BFD_RELOC_390_PLT32DBL:
232 return &elf_howto_table[(int) R_390_PLT32DBL];
233 case BFD_RELOC_390_GOTPCDBL:
234 return &elf_howto_table[(int) R_390_GOTPCDBL];
235 case BFD_RELOC_64:
236 return &elf_howto_table[(int) R_390_64];
237 case BFD_RELOC_64_PCREL:
238 return &elf_howto_table[(int) R_390_PC64];
239 case BFD_RELOC_390_GOT64:
240 return &elf_howto_table[(int) R_390_GOT64];
241 case BFD_RELOC_390_PLT64:
242 return &elf_howto_table[(int) R_390_PLT64];
243 case BFD_RELOC_390_GOTENT:
244 return &elf_howto_table[(int) R_390_GOTENT];
5236c819
MS		 245 case BFD_RELOC_16_GOTOFF:
246 return &elf_howto_table[(int) R_390_GOTOFF16];
247 case BFD_RELOC_390_GOTOFF64:
248 return &elf_howto_table[(int) R_390_GOTOFF64];
249 case BFD_RELOC_390_GOTPLT12:
250 return &elf_howto_table[(int) R_390_GOTPLT12];
251 case BFD_RELOC_390_GOTPLT16:
252 return &elf_howto_table[(int) R_390_GOTPLT16];
253 case BFD_RELOC_390_GOTPLT32:
254 return &elf_howto_table[(int) R_390_GOTPLT32];
255 case BFD_RELOC_390_GOTPLT64:
256 return &elf_howto_table[(int) R_390_GOTPLT64];
257 case BFD_RELOC_390_GOTPLTENT:
258 return &elf_howto_table[(int) R_390_GOTPLTENT];
259 case BFD_RELOC_390_PLTOFF16:
260 return &elf_howto_table[(int) R_390_PLTOFF16];
261 case BFD_RELOC_390_PLTOFF32:
262 return &elf_howto_table[(int) R_390_PLTOFF32];
263 case BFD_RELOC_390_PLTOFF64:
264 return &elf_howto_table[(int) R_390_PLTOFF64];
69fc87f1
MS		 265 case BFD_RELOC_390_TLS_LOAD:
266 return &elf_howto_table[(int) R_390_TLS_LOAD];
267 case BFD_RELOC_390_TLS_GDCALL:
268 return &elf_howto_table[(int) R_390_TLS_GDCALL];
269 case BFD_RELOC_390_TLS_LDCALL:
270 return &elf_howto_table[(int) R_390_TLS_LDCALL];
271 case BFD_RELOC_390_TLS_GD64:
272 return &elf_howto_table[(int) R_390_TLS_GD64];
273 case BFD_RELOC_390_TLS_GOTIE12:
274 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
275 case BFD_RELOC_390_TLS_GOTIE64:
276 return &elf_howto_table[(int) R_390_TLS_GOTIE64];
277 case BFD_RELOC_390_TLS_LDM64:
278 return &elf_howto_table[(int) R_390_TLS_LDM64];
279 case BFD_RELOC_390_TLS_IE64:
280 return &elf_howto_table[(int) R_390_TLS_IE64];
281 case BFD_RELOC_390_TLS_IEENT:
282 return &elf_howto_table[(int) R_390_TLS_IEENT];
283 case BFD_RELOC_390_TLS_LE64:
284 return &elf_howto_table[(int) R_390_TLS_LE64];
285 case BFD_RELOC_390_TLS_LDO64:
286 return &elf_howto_table[(int) R_390_TLS_LDO64];
287 case BFD_RELOC_390_TLS_DTPMOD:
288 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
289 case BFD_RELOC_390_TLS_DTPOFF:
290 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
291 case BFD_RELOC_390_TLS_TPOFF:
292 return &elf_howto_table[(int) R_390_TLS_TPOFF];
bd1ea41b
MS		 293 case BFD_RELOC_390_20:
294 return &elf_howto_table[(int) R_390_20];
295 case BFD_RELOC_390_GOT20:
296 return &elf_howto_table[(int) R_390_GOT20];
297 case BFD_RELOC_390_GOTPLT20:
298 return &elf_howto_table[(int) R_390_GOTPLT20];
299 case BFD_RELOC_390_TLS_GOTIE20:
300 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
470b557a
AK		 301 case BFD_RELOC_390_IRELATIVE:
302 return &elf_howto_table[(int) R_390_IRELATIVE];
5236c819
MS		 303 case BFD_RELOC_VTABLE_INHERIT:
304 return &elf64_s390_vtinherit_howto;
305 case BFD_RELOC_VTABLE_ENTRY:
306 return &elf64_s390_vtentry_howto;
0451c93c
MS		 307 default:
308 break;
309 }
a85d7ed0
NC		 310 return 0;
311}
312
157090f7
AM		 313static reloc_howto_type *
314elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
315 const char *r_name)
316{
317 unsigned int i;
318
319 for (i = 0;
320 i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
321 i++)
322 if (elf_howto_table[i].name != NULL
323 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
324 return &elf_howto_table[i];
325
326 if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
327 return &elf64_s390_vtinherit_howto;
328 if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
329 return &elf64_s390_vtentry_howto;
330
331 return NULL;
332}
333
a85d7ed0
NC		 334/* We need to use ELF64_R_TYPE so we have our own copy of this function,
335 and elf64-s390.c has its own copy. */
336
337static void
2c3fc389
NC		 338elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
339 arelent *cache_ptr,
340 Elf_Internal_Rela *dst)
a85d7ed0 341{
d0fb9a8d
JJ		 342 unsigned int r_type = ELF64_R_TYPE(dst->r_info);
343 switch (r_type)
a85d7ed0
NC		 344 {
345 case R_390_GNU_VTINHERIT:
346 cache_ptr->howto = &elf64_s390_vtinherit_howto;
347 break;
348
349 case R_390_GNU_VTENTRY:
350 cache_ptr->howto = &elf64_s390_vtentry_howto;
351 break;
352
353 default:
d0fb9a8d
JJ		 354 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
355 {
356 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
357 abfd, (int) r_type);
358 r_type = R_390_NONE;
359 }
360 cache_ptr->howto = &elf_howto_table[r_type];
99c79b2e 361 }
a85d7ed0
NC		 362}
363
69fc87f1
MS		 364/* A relocation function which doesn't do anything. */
365static bfd_reloc_status_type
2c3fc389
NC		 366s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
367 arelent *reloc_entry,
368 asymbol *symbol ATTRIBUTE_UNUSED,
369 void * data ATTRIBUTE_UNUSED,
370 asection *input_section,
371 bfd *output_bfd,
372 char **error_message ATTRIBUTE_UNUSED)
69fc87f1
MS		 373{
374 if (output_bfd)
375 reloc_entry->address += input_section->output_offset;
376 return bfd_reloc_ok;
377}
378
bd1ea41b
MS		 379/* Handle the large displacement relocs. */
380static bfd_reloc_status_type
2c3fc389
NC		 381s390_elf_ldisp_reloc (bfd *abfd,
382 arelent *reloc_entry,
383 asymbol *symbol,
384 void * data,
385 asection *input_section,
386 bfd *output_bfd,
387 char **error_message ATTRIBUTE_UNUSED)
bd1ea41b
MS		 388{
389 reloc_howto_type *howto = reloc_entry->howto;
390 bfd_vma relocation;
391 bfd_vma insn;
392
393 if (output_bfd != (bfd *) NULL
394 && (symbol->flags & BSF_SECTION_SYM) == 0
395 && (! howto->partial_inplace
396 || reloc_entry->addend == 0))
397 {
398 reloc_entry->address += input_section->output_offset;
399 return bfd_reloc_ok;
400 }
401 if (output_bfd != NULL)
402 return bfd_reloc_continue;
403
07515404 404 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b
MS		 405 return bfd_reloc_outofrange;
406
407 relocation = (symbol->value
408 + symbol->section->output_section->vma
409 + symbol->section->output_offset);
410 relocation += reloc_entry->addend;
411 if (howto->pc_relative)
412 {
413 relocation -= (input_section->output_section->vma
414 + input_section->output_offset);
415 relocation -= reloc_entry->address;
416 }
417
418 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
419 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
420 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
421
422 if ((bfd_signed_vma) relocation < - 0x80000
423 || (bfd_signed_vma) relocation > 0x7ffff)
424 return bfd_reloc_overflow;
425 else
426 return bfd_reloc_ok;
427}
428
b34976b6 429static bfd_boolean
2c3fc389 430elf_s390_is_local_label_name (bfd *abfd, const char *name)
a85d7ed0
NC		 431{
432 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 433 return TRUE;
a85d7ed0
NC		 434
435 return _bfd_elf_is_local_label_name (abfd, name);
436}
437
438/* Functions for the 390 ELF linker. */
439
440/* The name of the dynamic interpreter. This is put in the .interp
441 section. */
442
87049b0d 443#define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
a85d7ed0 444
64285810
MS		 445/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
446 copying dynamic variables from a shared lib into an app's dynbss
447 section, and instead use a dynamic relocation to point into the
448 shared lib. */
449#define ELIMINATE_COPY_RELOCS 1
450
a85d7ed0
NC		 451/* The size in bytes of the first entry in the procedure linkage table. */
452#define PLT_FIRST_ENTRY_SIZE 32
453/* The size in bytes of an entry in the procedure linkage table. */
99c79b2e 454#define PLT_ENTRY_SIZE 32
a85d7ed0
NC		 455
456#define GOT_ENTRY_SIZE 8
457
470b557a
AK		 458#define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela)
459
a85d7ed0
NC		 460/* The first three entries in a procedure linkage table are reserved,
461 and the initial contents are unimportant (we zero them out).
462 Subsequent entries look like this. See the SVR4 ABI 386
463 supplement to see how this works. */
464
465/* For the s390, simple addr offset can only be 0 - 4096.
466 To use the full 16777216 TB address space, several instructions
467 are needed to load an address in a register and execute
468 a branch( or just saving the address)
469
99c79b2e 470 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC		 471
472/* The first 3 words in the GOT are then reserved.
473 Word 0 is the address of the dynamic table.
474 Word 1 is a pointer to a structure describing the object
475 Word 2 is used to point to the loader entry address.
476
477 The code for PLT entries looks like this:
478
479 The GOT holds the address in the PLT to be executed.
480 The loader then gets:
481 24(15) = Pointer to the structure describing the object.
99c79b2e 482 28(15) = Offset in symbol table
a85d7ed0
NC		 483 The loader must then find the module where the function is
484 and insert the address in the GOT.
485
486 PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
487 LG 1,0(1) # 6 bytes Load address from GOT in r1
488 BCR 15,1 # 2 bytes Jump to address
489 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
490 LGF 1,12(1) # 6 bytes Load offset in symbl table in r1
491 BRCL 15,-x # 6 bytes Jump to start of PLT
a7e28bbe 492 .long ? # 4 bytes offset into .rela.plt
a85d7ed0
NC		 493
494 Total = 32 bytes per PLT entry
495 Fixup at offset 2: relative address to GOT entry
496 Fixup at offset 22: relative branch to PLT0
a7e28bbe 497 Fixup at offset 28: 32 bit offset into .rela.plt
a85d7ed0 498
a7e28bbe
AK		 499 A 32 bit offset into the symbol table is enough. It allows for
500 .rela.plt sections up to a size of 2 gigabyte. A single dynamic
501 object (the main program, any shared library) is limited to 4GB in
502 size. Having a .rela.plt of 2GB would already make the .plt
503 section bigger than 8GB. */
a85d7ed0 504
9aa17453
AK		 505static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] =
506 {
507 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
508 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */
509 0x07, 0xf1, /* br %r1 */
510 0x0d, 0x10, /* basr %r1,%r0 */
511 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */
512 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */
513 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */
514 };
a85d7ed0
NC		 515
516/* The first PLT entry pushes the offset into the symbol table
a7e28bbe
AK		 517 from R1 onto the stack at 56(15) and the loader object info
518 at 48(15), loads the loader address in R1 and jumps to it. */
a85d7ed0
NC		 519
520/* The first entry in the PLT:
521
522 PLT0:
523 STG 1,56(15) # r1 contains the offset into the symbol table
524 LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
525 MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
526 LG 1,16(1) # get entry address of loader
527 BCR 15,1 # jump to loader
528
529 Fixup at offset 8: relative address to start of GOT. */
530
9aa17453
AK		 531static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] =
532 {
533 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */
534 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
535 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */
536 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */
537 0x07, 0xf1, /* br %r1 */
538 0x07, 0x00, /* nopr %r0 */
539 0x07, 0x00, /* nopr %r0 */
540 0x07, 0x00 /* nopr %r0 */
541 };
a85d7ed0 542
a85d7ed0
NC		 543
544/* s390 ELF linker hash entry. */
545
546struct elf_s390_link_hash_entry
547{
0451c93c 548 struct elf_link_hash_entry elf;
a85d7ed0 549
0451c93c 550 /* Track dynamic relocs copied for this symbol. */
00d8c7a9 551 struct elf_dyn_relocs *dyn_relocs;
5236c819
MS		 552
553 /* Number of GOTPLT references for a function. */
554 bfd_signed_vma gotplt_refcount;
69fc87f1
MS		 555
556#define GOT_UNKNOWN 0
557#define GOT_NORMAL 1
558#define GOT_TLS_GD 2
559#define GOT_TLS_IE 3
560#define GOT_TLS_IE_NLT 3
561 unsigned char tls_type;
470b557a
AK		 562
563 /* For pointer equality reasons we might need to change the symbol
564 type from STT_GNU_IFUNC to STT_FUNC together with its value and
565 section entry. So after alloc_dynrelocs only these values should
566 be used. In order to check whether a symbol is IFUNC use
567 s390_is_ifunc_symbol_p. */
568 bfd_vma ifunc_resolver_address;
569 asection *ifunc_resolver_section;
a85d7ed0
NC		 570};
571
69fc87f1
MS		 572#define elf_s390_hash_entry(ent) \
573 ((struct elf_s390_link_hash_entry *)(ent))
574
470b557a
AK		 575/* This structure represents an entry in the local PLT list needed for
576 local IFUNC symbols. */
577struct plt_entry
578{
579 /* The section of the local symbol.
580 Set in relocate_section and used in finish_dynamic_sections. */
581 asection *sec;
582
583 union
584 {
585 bfd_signed_vma refcount;
586 bfd_vma offset;
587 } plt;
588};
589
0ffa91dd
NC		 590/* NOTE: Keep this structure in sync with
591 the one declared in elf32-s390.c. */
69fc87f1
MS		 592struct elf_s390_obj_tdata
593{
594 struct elf_obj_tdata root;
595
470b557a
AK		 596 /* A local PLT is needed for ifunc symbols. */
597 struct plt_entry *local_plt;
598
0ffa91dd 599 /* TLS type for each local got entry. */
69fc87f1
MS		 600 char *local_got_tls_type;
601};
602
603#define elf_s390_tdata(abfd) \
604 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
605
470b557a
AK		 606#define elf_s390_local_plt(abfd) \
607 (elf_s390_tdata (abfd)->local_plt)
608
69fc87f1
MS		 609#define elf_s390_local_got_tls_type(abfd) \
610 (elf_s390_tdata (abfd)->local_got_tls_type)
611
0ffa91dd
NC		 612#define is_s390_elf(bfd) \
613 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
614 && elf_tdata (bfd) != NULL \
4dfe6ac6 615 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 616
69fc87f1 617static bfd_boolean
62d7a5f6 618elf_s390_mkobject (bfd *abfd)
69fc87f1 619{
0ffa91dd 620 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 621 S390_ELF_DATA);
69fc87f1
MS		 622}
623
624static bfd_boolean
2c3fc389 625elf_s390_object_p (bfd *abfd)
69fc87f1 626{
69fc87f1
MS		 627 /* Set the right machine number for an s390 elf32 file. */
628 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
629}
630
a85d7ed0
NC		 631/* s390 ELF linker hash table. */
632
633struct elf_s390_link_hash_table
634{
0451c93c 635 struct elf_link_hash_table elf;
a85d7ed0 636
0451c93c 637 /* Short-cuts to get to dynamic linker sections. */
0451c93c
MS		 638 asection *sdynbss;
639 asection *srelbss;
470b557a 640 asection *irelifunc;
ec338859 641
69fc87f1
MS		 642 union {
643 bfd_signed_vma refcount;
644 bfd_vma offset;
645 } tls_ldm_got;
646
87d72d41
AM		 647 /* Small local sym cache. */
648 struct sym_cache sym_cache;
0451c93c 649};
a85d7ed0
NC		 650
651/* Get the s390 ELF linker hash table from a link_info structure. */
652
653#define elf_s390_hash_table(p) \
4dfe6ac6
NC		 654 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
655 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
a85d7ed0 656
470b557a
AK		 657#define ELF64 1
658#include "elf-s390-common.c"
659
a85d7ed0
NC		 660/* Create an entry in an s390 ELF linker hash table. */
661
662static struct bfd_hash_entry *
2c3fc389
NC		 663link_hash_newfunc (struct bfd_hash_entry *entry,
664 struct bfd_hash_table *table,
665 const char *string)
a85d7ed0 666{
a85d7ed0
NC		 667 /* Allocate the structure if it has not already been allocated by a
668 subclass. */
0451c93c
MS		 669 if (entry == NULL)
670 {
671 entry = bfd_hash_allocate (table,
672 sizeof (struct elf_s390_link_hash_entry));
673 if (entry == NULL)
674 return entry;
675 }
a85d7ed0
NC		 676
677 /* Call the allocation method of the superclass. */
0451c93c
MS		 678 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
679 if (entry != NULL)
a85d7ed0 680 {
0451c93c
MS		 681 struct elf_s390_link_hash_entry *eh;
682
683 eh = (struct elf_s390_link_hash_entry *) entry;
684 eh->dyn_relocs = NULL;
5236c819 685 eh->gotplt_refcount = 0;
69fc87f1 686 eh->tls_type = GOT_UNKNOWN;
470b557a
AK		 687 eh->ifunc_resolver_address = 0;
688 eh->ifunc_resolver_section = NULL;
a85d7ed0
NC		 689 }
690
0451c93c 691 return entry;
a85d7ed0
NC		 692}
693
694/* Create an s390 ELF linker hash table. */
695
696static struct bfd_link_hash_table *
2c3fc389 697elf_s390_link_hash_table_create (bfd *abfd)
a85d7ed0
NC		 698{
699 struct elf_s390_link_hash_table *ret;
dc810e39 700 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
a85d7ed0 701
e2d34d7d 702 ret = (struct elf_s390_link_hash_table *) bfd_malloc (amt);
0451c93c 703 if (ret == NULL)
a85d7ed0
NC		 704 return NULL;
705
66eb6687 706 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 707 sizeof (struct elf_s390_link_hash_entry),
708 S390_ELF_DATA))
a85d7ed0 709 {
e2d34d7d 710 free (ret);
a85d7ed0
NC		 711 return NULL;
712 }
713
f41345a7
AK		 714 ret->elf.sgot = NULL;
715 ret->elf.sgotplt = NULL;
716 ret->elf.srelgot = NULL;
717 ret->elf.splt = NULL;
718 ret->elf.srelplt = NULL;
0451c93c
MS		 719 ret->sdynbss = NULL;
720 ret->srelbss = NULL;
69fc87f1 721 ret->tls_ldm_got.refcount = 0;
87d72d41 722 ret->sym_cache.abfd = NULL;
0451c93c
MS		 723
724 return &ret->elf.root;
725}
726
727/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
728 shortcuts to them in our hash table. */
729
b34976b6 730static bfd_boolean
4dfe6ac6
NC		 731create_got_section (bfd *dynobj,
732 struct bfd_link_info *info)
0451c93c
MS		 733{
734 struct elf_s390_link_hash_table *htab;
735
736 if (! _bfd_elf_create_got_section (dynobj, info))
b34976b6 737 return FALSE;
0451c93c
MS		 738
739 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 740 if (htab == NULL)
741 return FALSE;
742
3d4d4302
AM		 743 htab->elf.sgot = bfd_get_linker_section (dynobj, ".got");
744 htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
745 htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got");
f41345a7 746 if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot)
0451c93c 747 abort ();
b34976b6 748 return TRUE;
0451c93c
MS		 749}
750
751/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
752 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
753 hash table. */
754
b34976b6 755static bfd_boolean
4dfe6ac6
NC		 756elf_s390_create_dynamic_sections (bfd *dynobj,
757 struct bfd_link_info *info)
0451c93c
MS		 758{
759 struct elf_s390_link_hash_table *htab;
760
761 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 762 if (htab == NULL)
763 return FALSE;
764
f41345a7 765 if (!htab->elf.sgot && !create_got_section (dynobj, info))
b34976b6 766 return FALSE;
0451c93c
MS		 767
768 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 769 return FALSE;
0451c93c 770
3d4d4302
AM		 771 htab->elf.splt = bfd_get_linker_section (dynobj, ".plt");
772 htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt");
773 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
0451c93c 774 if (!info->shared)
3d4d4302 775 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
0451c93c 776
f41345a7 777 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
0451c93c
MS		 778 || (!info->shared && !htab->srelbss))
779 abort ();
780
b34976b6 781 return TRUE;
a85d7ed0
NC		 782}
783
0451c93c
MS		 784/* Copy the extra info we tack onto an elf_link_hash_entry. */
785
786static void
2c3fc389
NC		 787elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
788 struct elf_link_hash_entry *dir,
789 struct elf_link_hash_entry *ind)
0451c93c
MS		 790{
791 struct elf_s390_link_hash_entry *edir, *eind;
792
793 edir = (struct elf_s390_link_hash_entry *) dir;
794 eind = (struct elf_s390_link_hash_entry *) ind;
795
796 if (eind->dyn_relocs != NULL)
797 {
798 if (edir->dyn_relocs != NULL)
799 {
00d8c7a9
AK		 800 struct elf_dyn_relocs **pp;
801 struct elf_dyn_relocs *p;
0451c93c 802
fcfa13d2 803 /* Add reloc counts against the indirect sym to the direct sym
0451c93c
MS		 804 list. Merge any entries against the same section. */
805 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
806 {
00d8c7a9 807 struct elf_dyn_relocs *q;
0451c93c
MS		 808
809 for (q = edir->dyn_relocs; q != NULL; q = q->next)
810 if (q->sec == p->sec)
811 {
812 q->pc_count += p->pc_count;
813 q->count += p->count;
814 *pp = p->next;
815 break;
816 }
817 if (q == NULL)
818 pp = &p->next;
819 }
820 *pp = edir->dyn_relocs;
821 }
822
823 edir->dyn_relocs = eind->dyn_relocs;
824 eind->dyn_relocs = NULL;
825 }
826
69fc87f1
MS		 827 if (ind->root.type == bfd_link_hash_indirect
828 && dir->got.refcount <= 0)
829 {
830 edir->tls_type = eind->tls_type;
831 eind->tls_type = GOT_UNKNOWN;
832 }
833
64285810
MS		 834 if (ELIMINATE_COPY_RELOCS
835 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 836 && dir->dynamic_adjusted)
837 {
838 /* If called to transfer flags for a weakdef during processing
839 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
840 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
841 dir->ref_dynamic |= ind->ref_dynamic;
842 dir->ref_regular |= ind->ref_regular;
843 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
844 dir->needs_plt |= ind->needs_plt;
845 }
64285810 846 else
fcfa13d2 847 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 848}
a85d7ed0 849
69fc87f1 850static int
2c3fc389
NC		 851elf_s390_tls_transition (struct bfd_link_info *info,
852 int r_type,
853 int is_local)
69fc87f1
MS		 854{
855 if (info->shared)
856 return r_type;
857
858 switch (r_type)
859 {
860 case R_390_TLS_GD64:
861 case R_390_TLS_IE64:
862 if (is_local)
863 return R_390_TLS_LE64;
864 return R_390_TLS_IE64;
865 case R_390_TLS_GOTIE64:
866 if (is_local)
867 return R_390_TLS_LE64;
868 return R_390_TLS_GOTIE64;
869 case R_390_TLS_LDM64:
870 return R_390_TLS_LE64;
871 }
872
873 return r_type;
874}
875
a85d7ed0
NC		 876/* Look through the relocs for a section during the first phase, and
877 allocate space in the global offset table or procedure linkage
878 table. */
879
b34976b6 880static bfd_boolean
4dfe6ac6
NC		 881elf_s390_check_relocs (bfd *abfd,
882 struct bfd_link_info *info,
883 asection *sec,
884 const Elf_Internal_Rela *relocs)
a85d7ed0 885{
0451c93c 886 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 887 Elf_Internal_Shdr *symtab_hdr;
888 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 889 const Elf_Internal_Rela *rel;
890 const Elf_Internal_Rela *rel_end;
a85d7ed0 891 asection *sreloc;
5236c819 892 bfd_signed_vma *local_got_refcounts;
69fc87f1 893 int tls_type, old_tls_type;
a85d7ed0 894
1049f94e 895 if (info->relocatable)
b34976b6 896 return TRUE;
a85d7ed0 897
0ffa91dd
NC		 898 BFD_ASSERT (is_s390_elf (abfd));
899
0451c93c 900 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 901 if (htab == NULL)
902 return FALSE;
903
0ffa91dd 904 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 905 sym_hashes = elf_sym_hashes (abfd);
5236c819 906 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 907
a85d7ed0
NC		 908 sreloc = NULL;
909
910 rel_end = relocs + sec->reloc_count;
911 for (rel = relocs; rel < rel_end; rel++)
912 {
69fc87f1 913 unsigned int r_type;
a85d7ed0
NC		 914 unsigned long r_symndx;
915 struct elf_link_hash_entry *h;
470b557a 916 Elf_Internal_Sym *isym;
a85d7ed0
NC		 917
918 r_symndx = ELF64_R_SYM (rel->r_info);
919
0451c93c
MS		 920 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
921 {
d003868e
AM		 922 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
923 abfd,
0451c93c 924 r_symndx);
b34976b6 925 return FALSE;
0451c93c
MS		 926 }
927
a85d7ed0 928 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK		 929 {
930 /* A local symbol. */
931 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
932 abfd, r_symndx);
933 if (isym == NULL)
934 return FALSE;
935
936 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
937 {
938 struct plt_entry *plt;
939
940 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
941 return FALSE;
942
943 if (local_got_refcounts == NULL)
944 {
945 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
946 return FALSE;
947 local_got_refcounts = elf_local_got_refcounts (abfd);
948 }
949 plt = elf_s390_local_plt (abfd);
950 plt[r_symndx].plt.refcount++;
951 }
952 h = NULL;
953 }
a85d7ed0 954 else
973a3492
L		 955 {
956 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
957 while (h->root.type == bfd_link_hash_indirect
958 || h->root.type == bfd_link_hash_warning)
959 h = (struct elf_link_hash_entry *) h->root.u.i.link;
960 }
a85d7ed0 961
5236c819
MS		 962 /* Create got section and local_got_refcounts array if they
963 are needed. */
69fc87f1
MS		 964 r_type = elf_s390_tls_transition (info,
965 ELF64_R_TYPE (rel->r_info),
966 h == NULL);
967 switch (r_type)
a85d7ed0
NC		 968 {
969 case R_390_GOT12:
947216bf 970 case R_390_GOT16:
bd1ea41b 971 case R_390_GOT20:
a85d7ed0
NC		 972 case R_390_GOT32:
973 case R_390_GOT64:
974 case R_390_GOTENT:
5236c819
MS		 975 case R_390_GOTPLT12:
976 case R_390_GOTPLT16:
bd1ea41b 977 case R_390_GOTPLT20:
5236c819
MS		 978 case R_390_GOTPLT32:
979 case R_390_GOTPLT64:
980 case R_390_GOTPLTENT:
69fc87f1
MS		 981 case R_390_TLS_GD64:
982 case R_390_TLS_GOTIE12:
bd1ea41b 983 case R_390_TLS_GOTIE20:
69fc87f1
MS		 984 case R_390_TLS_GOTIE64:
985 case R_390_TLS_IEENT:
986 case R_390_TLS_IE64:
987 case R_390_TLS_LDM64:
5236c819
MS		 988 if (h == NULL
989 && local_got_refcounts == NULL)
a85d7ed0 990 {
470b557a 991 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 992 return FALSE;
470b557a 993 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 994 }
470b557a 995
5236c819
MS		 996 /* Fall through. */
997 case R_390_GOTOFF16:
998 case R_390_GOTOFF32:
999 case R_390_GOTOFF64:
0451c93c
MS		 1000 case R_390_GOTPC:
1001 case R_390_GOTPCDBL:
f41345a7 1002 if (htab->elf.sgot == NULL)
0451c93c
MS		 1003 {
1004 if (htab->elf.dynobj == NULL)
1005 htab->elf.dynobj = abfd;
1006 if (!create_got_section (htab->elf.dynobj, info))
b34976b6 1007 return FALSE;
0451c93c 1008 }
5236c819
MS		 1009 }
1010
470b557a
AK		 1011 if (h != NULL)
1012 {
1013 if (htab->elf.dynobj == NULL)
1014 htab->elf.dynobj = abfd;
1015 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1016 return FALSE;
1017
1018 /* Make sure an IFUNC symbol defined in a non-shared object
1019 always gets a PLT slot. */
1020 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1021 {
1022 /* The symbol is called by the dynamic loader in order
1023 to resolve the relocation. So it is in fact also
1024 referenced. */
1025 h->ref_regular = 1;
1026 h->needs_plt = 1;
1027 }
1028 }
1029
69fc87f1 1030 switch (r_type)
5236c819 1031 {
5236c819
MS		 1032 case R_390_GOTOFF16:
1033 case R_390_GOTOFF32:
1034 case R_390_GOTOFF64:
1035 case R_390_GOTPC:
1036 case R_390_GOTPCDBL:
470b557a
AK		 1037 /* These relocs do not need a GOT slot. They just load the
1038 GOT pointer itself or address something else relative to
1039 the GOT. Since the GOT pointer has been set up above we
1040 are done. */
0451c93c 1041 break;
ec338859 1042
947216bf 1043 case R_390_PLT16DBL:
a85d7ed0
NC		 1044 case R_390_PLT32:
1045 case R_390_PLT32DBL:
1046 case R_390_PLT64:
5236c819
MS		 1047 case R_390_PLTOFF16:
1048 case R_390_PLTOFF32:
1049 case R_390_PLTOFF64:
a85d7ed0 1050 /* This symbol requires a procedure linkage table entry. We
947216bf
AM		 1051 actually build the entry in adjust_dynamic_symbol,
1052 because this might be a case of linking PIC code which is
1053 never referenced by a dynamic object, in which case we
1054 don't need to generate a procedure linkage table entry
1055 after all. */
ec338859 1056
a85d7ed0 1057 /* If this is a local symbol, we resolve it directly without
947216bf 1058 creating a procedure linkage table entry. */
5236c819
MS		 1059 if (h != NULL)
1060 {
f5385ebf 1061 h->needs_plt = 1;
5236c819
MS		 1062 h->plt.refcount += 1;
1063 }
1064 break;
ec338859 1065
5236c819
MS		 1066 case R_390_GOTPLT12:
1067 case R_390_GOTPLT16:
bd1ea41b 1068 case R_390_GOTPLT20:
5236c819
MS		 1069 case R_390_GOTPLT32:
1070 case R_390_GOTPLT64:
1071 case R_390_GOTPLTENT:
1072 /* This symbol requires either a procedure linkage table entry
1073 or an entry in the local got. We actually build the entry
1074 in adjust_dynamic_symbol because whether this is really a
1075 global reference can change and with it the fact if we have
1076 to create a plt entry or a local got entry. To be able to
1077 make a once global symbol a local one we have to keep track
1078 of the number of gotplt references that exist for this
1079 symbol. */
1080 if (h != NULL)
1081 {
1082 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1083 h->needs_plt = 1;
5236c819
MS		 1084 h->plt.refcount += 1;
1085 }
69fc87f1
MS		 1086 else
1087 local_got_refcounts[r_symndx] += 1;
1088 break;
1089
1090 case R_390_TLS_LDM64:
1091 htab->tls_ldm_got.refcount += 1;
1092 break;
1093
1094 case R_390_TLS_IE64:
1095 case R_390_TLS_GOTIE12:
bd1ea41b 1096 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1097 case R_390_TLS_GOTIE64:
1098 case R_390_TLS_IEENT:
1099 if (info->shared)
1100 info->flags |= DF_STATIC_TLS;
1101 /* Fall through */
1102
1103 case R_390_GOT12:
26e41594 1104 case R_390_GOT16:
bd1ea41b 1105 case R_390_GOT20:
69fc87f1
MS		 1106 case R_390_GOT32:
1107 case R_390_GOT64:
1108 case R_390_GOTENT:
1109 case R_390_TLS_GD64:
1110 /* This symbol requires a global offset table entry. */
1111 switch (r_type)
1112 {
1113 default:
1114 case R_390_GOT12:
1115 case R_390_GOT16:
bd1ea41b 1116 case R_390_GOT20:
69fc87f1
MS		 1117 case R_390_GOT32:
1118 case R_390_GOTENT:
1119 tls_type = GOT_NORMAL;
1120 break;
1121 case R_390_TLS_GD64:
1122 tls_type = GOT_TLS_GD;
1123 break;
1124 case R_390_TLS_IE64:
1125 case R_390_TLS_GOTIE64:
1126 tls_type = GOT_TLS_IE;
1127 break;
1128 case R_390_TLS_GOTIE12:
bd1ea41b 1129 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1130 case R_390_TLS_IEENT:
1131 tls_type = GOT_TLS_IE_NLT;
1132 break;
1133 }
1134
1135 if (h != NULL)
1136 {
1137 h->got.refcount += 1;
1138 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1139 }
5236c819
MS		 1140 else
1141 {
1142 local_got_refcounts[r_symndx] += 1;
69fc87f1 1143 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
5236c819 1144 }
69fc87f1
MS		 1145 /* If a TLS symbol is accessed using IE at least once,
1146 there is no point to use dynamic model for it. */
1147 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1148 {
1149 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1150 {
1151 (*_bfd_error_handler)
d003868e
AM		 1152 (_("%B: `%s' accessed both as normal and thread local symbol"),
1153 abfd, h->root.root.string);
69fc87f1
MS		 1154 return FALSE;
1155 }
1156 if (old_tls_type > tls_type)
1157 tls_type = old_tls_type;
1158 }
1159
1160 if (old_tls_type != tls_type)
1161 {
1162 if (h != NULL)
1163 elf_s390_hash_entry (h)->tls_type = tls_type;
1164 else
1165 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1166 }
1167
1168 if (r_type != R_390_TLS_IE64)
1169 break;
1170 /* Fall through */
1171
1172 case R_390_TLS_LE64:
1173 if (!info->shared)
1174 break;
1175 info->flags |= DF_STATIC_TLS;
1176 /* Fall through */
ec338859 1177
947216bf
AM		 1178 case R_390_8:
1179 case R_390_16:
a85d7ed0
NC		 1180 case R_390_32:
1181 case R_390_64:
947216bf
AM		 1182 case R_390_PC16:
1183 case R_390_PC16DBL:
a85d7ed0
NC		 1184 case R_390_PC32:
1185 case R_390_PC32DBL:
1186 case R_390_PC64:
470b557a 1187 if (h != NULL)
0451c93c
MS		 1188 {
1189 /* If this reloc is in a read-only section, we might
1190 need a copy reloc. We can't check reliably at this
1191 stage whether the section is read-only, as input
1192 sections have not yet been mapped to output sections.
1193 Tentatively set the flag for now, and correct in
1194 adjust_dynamic_symbol. */
f5385ebf 1195 h->non_got_ref = 1;
ec338859 1196
470b557a
AK		 1197 if (!info->shared)
1198 {
1199 /* We may need a .plt entry if the function this reloc
1200 refers to is in a shared lib. */
1201 h->plt.refcount += 1;
1202 }
0451c93c 1203 }
ec338859 1204
a85d7ed0 1205 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1206 against a global symbol, or a non PC relative reloc
1207 against a local symbol, then we need to copy the reloc
1208 into the shared library. However, if we are linking with
1209 -Bsymbolic, we do not need to copy a reloc against a
1210 global symbol which is defined in an object we are
1211 including in the link (i.e., DEF_REGULAR is set). At
1212 this point we have not seen all the input files, so it is
1213 possible that DEF_REGULAR is not set now but will be set
1214 later (it is never cleared). In case of a weak definition,
1215 DEF_REGULAR may be cleared later by a strong definition in
1216 a shared library. We account for that possibility below by
1217 storing information in the relocs_copied field of the hash
1218 table entry. A similar situation occurs when creating
1219 shared libraries and symbol visibility changes render the
1220 symbol local.
1221
1222 If on the other hand, we are creating an executable, we
1223 may need to keep relocations for symbols satisfied by a
1224 dynamic library if we manage to avoid copy relocs for the
1225 symbol. */
1226 if ((info->shared
1227 && (sec->flags & SEC_ALLOC) != 0
1228 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
1229 && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
1230 && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1231 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1232 && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1233 || (h != NULL
8c21ca21 1234 && (! SYMBOLIC_BIND (info, h)
0451c93c 1235 || h->root.type == bfd_link_hash_defweak
f5385ebf 1236 || !h->def_regular))))
64285810
MS		 1237 || (ELIMINATE_COPY_RELOCS
1238 && !info->shared
0451c93c
MS		 1239 && (sec->flags & SEC_ALLOC) != 0
1240 && h != NULL
1241 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1242 || !h->def_regular)))
a85d7ed0 1243 {
00d8c7a9
AK		 1244 struct elf_dyn_relocs *p;
1245 struct elf_dyn_relocs **head;
ec338859 1246
0451c93c
MS		 1247 /* We must copy these reloc types into the output file.
1248 Create a reloc section in dynobj and make room for
1249 this reloc. */
a85d7ed0
NC		 1250 if (sreloc == NULL)
1251 {
440e9cd2
AK		 1252 if (htab->elf.dynobj == NULL)
1253 htab->elf.dynobj = abfd;
1254
83bac4b0
NC		 1255 sreloc = _bfd_elf_make_dynamic_reloc_section
1256 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
ec338859 1257
a85d7ed0 1258 if (sreloc == NULL)
83bac4b0 1259 return FALSE;
a85d7ed0 1260 }
ec338859 1261
0451c93c
MS		 1262 /* If this is a global symbol, we count the number of
1263 relocations we need for this symbol. */
1264 if (h != NULL)
a85d7ed0 1265 {
ec338859 1266 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS		 1267 }
1268 else
1269 {
ec338859
AM		 1270 /* Track dynamic relocs needed for local syms too.
1271 We really need local syms available to do this
1272 easily. Oh well. */
ec338859 1273 asection *s;
6edfbbad
DJ		 1274 void *vpp;
1275
87d72d41
AM		 1276 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1277 abfd, r_symndx);
1278 if (isym == NULL)
b34976b6 1279 return FALSE;
ec338859 1280
87d72d41
AM		 1281 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1282 if (s == NULL)
1283 s = sec;
1284
6edfbbad 1285 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1286 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1287 }
1288
1289 p = *head;
1290 if (p == NULL || p->sec != sec)
1291 {
1292 bfd_size_type amt = sizeof *p;
00d8c7a9 1293 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1294 bfd_alloc (htab->elf.dynobj, amt));
1295 if (p == NULL)
b34976b6 1296 return FALSE;
ec338859
AM		 1297 p->next = *head;
1298 *head = p;
1299 p->sec = sec;
1300 p->count = 0;
1301 p->pc_count = 0;
a85d7ed0 1302 }
ec338859
AM		 1303
1304 p->count += 1;
1305 if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
1306 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1307 || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1308 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1309 || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1310 p->pc_count += 1;
a85d7ed0 1311 }
a85d7ed0 1312 break;
ec338859 1313
a85d7ed0
NC		 1314 /* This relocation describes the C++ object vtable hierarchy.
1315 Reconstruct it for later use during GC. */
947216bf 1316 case R_390_GNU_VTINHERIT:
c152c796 1317 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 1318 return FALSE;
947216bf 1319 break;
ec338859 1320
a85d7ed0
NC		 1321 /* This relocation describes which C++ vtable entries are actually
1322 used. Record for later use during GC. */
947216bf 1323 case R_390_GNU_VTENTRY:
d17e0c6e
JB		 1324 BFD_ASSERT (h != NULL);
1325 if (h != NULL
1326 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 1327 return FALSE;
947216bf 1328 break;
ec338859 1329
a85d7ed0
NC		 1330 default:
1331 break;
1332 }
1333 }
1334
b34976b6 1335 return TRUE;
a85d7ed0
NC		 1336}
1337
1338/* Return the section that should be marked against GC for a given
1339 relocation. */
1340
1341static asection *
07adf181
AM		 1342elf_s390_gc_mark_hook (asection *sec,
1343 struct bfd_link_info *info,
1344 Elf_Internal_Rela *rel,
1345 struct elf_link_hash_entry *h,
1346 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1347{
1348 if (h != NULL)
07adf181
AM		 1349 switch (ELF64_R_TYPE (rel->r_info))
1350 {
1351 case R_390_GNU_VTINHERIT:
1352 case R_390_GNU_VTENTRY:
1353 return NULL;
1354 }
1355
1356 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0
NC		 1357}
1358
1359/* Update the got entry reference counts for the section being removed. */
1360
b34976b6 1361static bfd_boolean
07adf181
AM		 1362elf_s390_gc_sweep_hook (bfd *abfd,
1363 struct bfd_link_info *info,
1364 asection *sec,
1365 const Elf_Internal_Rela *relocs)
a85d7ed0 1366{
4dfe6ac6 1367 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1368 Elf_Internal_Shdr *symtab_hdr;
1369 struct elf_link_hash_entry **sym_hashes;
1370 bfd_signed_vma *local_got_refcounts;
1371 const Elf_Internal_Rela *rel, *relend;
a85d7ed0 1372
7dda2462
TG		 1373 if (info->relocatable)
1374 return TRUE;
1375
4dfe6ac6
NC		 1376 htab = elf_s390_hash_table (info);
1377 if (htab == NULL)
1378 return FALSE;
1379
ec338859 1380 elf_section_data (sec)->local_dynrel = NULL;
a85d7ed0 1381
0ffa91dd 1382 symtab_hdr = &elf_symtab_hdr (abfd);
0451c93c
MS		 1383 sym_hashes = elf_sym_hashes (abfd);
1384 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0
NC		 1385
1386 relend = relocs + sec->reloc_count;
1387 for (rel = relocs; rel < relend; rel++)
5236c819 1388 {
26e41594
AM		 1389 unsigned long r_symndx;
1390 unsigned int r_type;
1391 struct elf_link_hash_entry *h = NULL;
1392
5236c819 1393 r_symndx = ELF64_R_SYM (rel->r_info);
26e41594
AM		 1394 if (r_symndx >= symtab_hdr->sh_info)
1395 {
1396 struct elf_s390_link_hash_entry *eh;
00d8c7a9
AK		 1397 struct elf_dyn_relocs **pp;
1398 struct elf_dyn_relocs *p;
5236c819 1399
26e41594 1400 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1401 while (h->root.type == bfd_link_hash_indirect
1402 || h->root.type == bfd_link_hash_warning)
1403 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1404 eh = (struct elf_s390_link_hash_entry *) h;
5236c819 1405
26e41594
AM		 1406 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1407 if (p->sec == sec)
1408 {
1409 /* Everything must go for SEC. */
1410 *pp = p->next;
1411 break;
1412 }
1413 }
470b557a
AK		 1414 else
1415 {
1416 Elf_Internal_Sym *isym;
1417
1418 /* A local symbol. */
1419 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1420 abfd, r_symndx);
1421 if (isym == NULL)
1422 return FALSE;
1423
1424 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1425 {
1426 struct plt_entry *plt = elf_s390_local_plt (abfd);
1427 if (plt[r_symndx].plt.refcount > 0)
1428 plt[r_symndx].plt.refcount--;
1429 }
1430 }
26e41594
AM		 1431
1432 r_type = ELF64_R_TYPE (rel->r_info);
1433 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
69fc87f1 1434 switch (r_type)
5236c819 1435 {
69fc87f1 1436 case R_390_TLS_LDM64:
4dfe6ac6
NC		 1437 if (htab->tls_ldm_got.refcount > 0)
1438 htab->tls_ldm_got.refcount -= 1;
69fc87f1
MS		 1439 break;
1440
1441 case R_390_TLS_GD64:
1442 case R_390_TLS_IE64:
1443 case R_390_TLS_GOTIE12:
bd1ea41b 1444 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1445 case R_390_TLS_GOTIE64:
1446 case R_390_TLS_IEENT:
5236c819
MS		 1447 case R_390_GOT12:
1448 case R_390_GOT16:
bd1ea41b 1449 case R_390_GOT20:
5236c819
MS		 1450 case R_390_GOT32:
1451 case R_390_GOT64:
1452 case R_390_GOTOFF16:
1453 case R_390_GOTOFF32:
1454 case R_390_GOTOFF64:
1455 case R_390_GOTPC:
1456 case R_390_GOTPCDBL:
1457 case R_390_GOTENT:
1458 if (h != NULL)
1459 {
1460 if (h->got.refcount > 0)
1461 h->got.refcount -= 1;
1462 }
1463 else if (local_got_refcounts != NULL)
1464 {
1465 if (local_got_refcounts[r_symndx] > 0)
1466 local_got_refcounts[r_symndx] -= 1;
1467 }
26e41594 1468 break;
a85d7ed0 1469
5236c819
MS		 1470 case R_390_8:
1471 case R_390_12:
1472 case R_390_16:
bd1ea41b 1473 case R_390_20:
5236c819
MS		 1474 case R_390_32:
1475 case R_390_64:
1476 case R_390_PC16:
1477 case R_390_PC16DBL:
1478 case R_390_PC32:
1479 case R_390_PC32DBL:
1480 case R_390_PC64:
26e41594
AM		 1481 if (info->shared)
1482 break;
1483 /* Fall through */
a85d7ed0 1484
69fc87f1
MS		 1485 case R_390_PLT16DBL:
1486 case R_390_PLT32:
1487 case R_390_PLT32DBL:
1488 case R_390_PLT64:
1489 case R_390_PLTOFF16:
1490 case R_390_PLTOFF32:
1491 case R_390_PLTOFF64:
1492 if (h != NULL)
1493 {
1494 if (h->plt.refcount > 0)
1495 h->plt.refcount -= 1;
1496 }
1497 break;
1498
1499 case R_390_GOTPLT12:
1500 case R_390_GOTPLT16:
bd1ea41b 1501 case R_390_GOTPLT20:
69fc87f1
MS		 1502 case R_390_GOTPLT32:
1503 case R_390_GOTPLT64:
1504 case R_390_GOTPLTENT:
1505 if (h != NULL)
1506 {
1507 if (h->plt.refcount > 0)
1508 {
1509 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1510 h->plt.refcount -= 1;
1511 }
1512 }
1513 else if (local_got_refcounts != NULL)
1514 {
1515 if (local_got_refcounts[r_symndx] > 0)
1516 local_got_refcounts[r_symndx] -= 1;
1517 }
1518 break;
1519
5236c819
MS		 1520 default:
1521 break;
1522 }
1523 }
a85d7ed0 1524
b34976b6 1525 return TRUE;
a85d7ed0
NC		 1526}
1527
5236c819
MS		 1528/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1529 entry but we found we will not create any. Called when we find we will
1530 not have any PLT for this symbol, by for example
1531 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1532 or elf_s390_size_dynamic_sections if no dynamic sections will be
1533 created (we're only linking static objects). */
1534
1535static void
2c3fc389 1536elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1537{
1538 if (h->elf.root.type == bfd_link_hash_warning)
1539 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1540
1541 if (h->gotplt_refcount <= 0)
1542 return;
1543
1544 /* We simply add the number of gotplt references to the number
1545 * of got references for this symbol. */
1546 h->elf.got.refcount += h->gotplt_refcount;
1547 h->gotplt_refcount = -1;
1548}
1549
a85d7ed0
NC		 1550/* Adjust a symbol defined by a dynamic object and referenced by a
1551 regular object. The current definition is in some section of the
1552 dynamic object, but we're not including those sections. We have to
1553 change the definition to something the rest of the link can
1554 understand. */
1555
b34976b6 1556static bfd_boolean
4dfe6ac6
NC		 1557elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1558 struct elf_link_hash_entry *h)
a85d7ed0 1559{
0451c93c 1560 struct elf_s390_link_hash_table *htab;
a85d7ed0 1561 asection *s;
a85d7ed0 1562
470b557a
AK		 1563 /* STT_GNU_IFUNC symbol must go through PLT. */
1564 if (s390_is_ifunc_symbol_p (h))
1565 return TRUE;
1566
a85d7ed0
NC		 1567 /* If this is a function, put it in the procedure linkage table. We
1568 will fill in the contents of the procedure linkage table later
cedb70c5 1569 (although we could actually do it here). */
a85d7ed0 1570 if (h->type == STT_FUNC
f5385ebf 1571 || h->needs_plt)
a85d7ed0 1572 {
0451c93c 1573 if (h->plt.refcount <= 0
8c21ca21
AK		 1574 || SYMBOL_CALLS_LOCAL (info, h)
1575 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1576 && h->root.type == bfd_link_hash_undefweak))
a85d7ed0
NC		 1577 {
1578 /* This case can occur if we saw a PLT32 reloc in an input
947216bf
AM		 1579 file, but the symbol was never referred to by a dynamic
1580 object, or if all references were garbage collected. In
0451c93c
MS		 1581 such a case, we don't actually need to build a procedure
1582 linkage table, and we can just do a PC32 reloc instead. */
a85d7ed0 1583 h->plt.offset = (bfd_vma) -1;
f5385ebf 1584 h->needs_plt = 0;
5236c819 1585 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1586 }
1587
b34976b6 1588 return TRUE;
a85d7ed0 1589 }
bbd7ec4a 1590 else
0451c93c
MS		 1591 /* It's possible that we incorrectly decided a .plt reloc was
1592 needed for an R_390_PC32 reloc to a non-function sym in
1593 check_relocs. We can't decide accurately between function and
1594 non-function syms in check-relocs; Objects loaded later in
1595 the link may change h->type. So fix it now. */
bbd7ec4a 1596 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1597
1598 /* If this is a weak symbol, and there is a real definition, the
1599 processor independent code will have arranged for us to see the
1600 real definition first, and we can just use the same value. */
f6e332e6 1601 if (h->u.weakdef != NULL)
a85d7ed0 1602 {
f6e332e6
AM		 1603 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1604 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1605 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1606 h->root.u.def.value = h->u.weakdef->root.u.def.value;
64285810 1607 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1608 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1609 return TRUE;
a85d7ed0
NC		 1610 }
1611
1612 /* This is a reference to a symbol defined by a dynamic object which
1613 is not a function. */
1614
1615 /* If we are creating a shared library, we must presume that the
1616 only references to the symbol are via the global offset table.
1617 For such cases we need not do anything here; the relocations will
1618 be handled correctly by relocate_section. */
1619 if (info->shared)
b34976b6 1620 return TRUE;
a85d7ed0
NC		 1621
1622 /* If there are no references to this symbol that do not use the
1623 GOT, we don't need to generate a copy reloc. */
f5385ebf 1624 if (!h->non_got_ref)
b34976b6 1625 return TRUE;
a85d7ed0 1626
0451c93c
MS		 1627 /* If -z nocopyreloc was given, we won't generate them either. */
1628 if (info->nocopyreloc)
1629 {
f5385ebf 1630 h->non_got_ref = 0;
b34976b6 1631 return TRUE;
0451c93c
MS		 1632 }
1633
64285810 1634 if (ELIMINATE_COPY_RELOCS)
0451c93c 1635 {
64285810 1636 struct elf_s390_link_hash_entry * eh;
00d8c7a9 1637 struct elf_dyn_relocs *p;
0451c93c 1638
64285810
MS		 1639 eh = (struct elf_s390_link_hash_entry *) h;
1640 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1641 {
1642 s = p->sec->output_section;
1643 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1644 break;
1645 }
1646
1647 /* If we didn't find any dynamic relocs in read-only sections, then
1648 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1649 if (p == NULL)
1650 {
f5385ebf 1651 h->non_got_ref = 0;
64285810
MS		 1652 return TRUE;
1653 }
0451c93c
MS		 1654 }
1655
a85d7ed0
NC		 1656 /* We must allocate the symbol in our .dynbss section, which will
1657 become part of the .bss section of the executable. There will be
1658 an entry for this symbol in the .dynsym section. The dynamic
1659 object will contain position independent code, so all references
1660 from the dynamic object to this symbol will go through the global
1661 offset table. The dynamic linker will use the .dynsym entry to
1662 determine the address it must put in the global offset table, so
1663 both the dynamic object and the regular object will refer to the
1664 same memory location for the variable. */
1665
0451c93c 1666 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1667 if (htab == NULL)
1668 return FALSE;
a85d7ed0 1669
0451c93c
MS		 1670 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1671 copy the initial value out of the dynamic object and into the
1672 runtime process image. */
1d7e9d18 1673 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1674 {
eea6121a 1675 htab->srelbss->size += sizeof (Elf64_External_Rela);
f5385ebf 1676 h->needs_copy = 1;
a85d7ed0
NC		 1677 }
1678
0451c93c 1679 s = htab->sdynbss;
a85d7ed0 1680
027297b7 1681 return _bfd_elf_adjust_dynamic_copy (h, s);
a85d7ed0
NC		 1682}
1683
0451c93c
MS		 1684/* Allocate space in .plt, .got and associated reloc sections for
1685 dynamic relocs. */
1686
b34976b6 1687static bfd_boolean
4dfe6ac6
NC		 1688allocate_dynrelocs (struct elf_link_hash_entry *h,
1689 void * inf)
0451c93c
MS		 1690{
1691 struct bfd_link_info *info;
1692 struct elf_s390_link_hash_table *htab;
470b557a 1693 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1694 struct elf_dyn_relocs *p;
0451c93c 1695
e92d460e 1696 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1697 return TRUE;
0451c93c
MS		 1698
1699 info = (struct bfd_link_info *) inf;
1700 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1701 if (htab == NULL)
1702 return FALSE;
0451c93c 1703
470b557a
AK		 1704 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1705 here if it is defined and referenced in a non-shared object. */
1706 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1707 return s390_elf_allocate_ifunc_dyn_relocs (info, h,
1708 &eh->dyn_relocs);
1709 else if (htab->elf.dynamic_sections_created
1710 && h->plt.refcount > 0)
0451c93c
MS		 1711 {
1712 /* Make sure this symbol is output as a dynamic symbol.
1713 Undefined weak syms won't yet be marked as dynamic. */
1714 if (h->dynindx == -1
f5385ebf 1715 && !h->forced_local)
0451c93c 1716 {
c152c796 1717 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1718 return FALSE;
0451c93c
MS		 1719 }
1720
82058a73 1721 if (info->shared
4ec72bde 1722 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1723 {
f41345a7 1724 asection *s = htab->elf.splt;
0451c93c
MS		 1725
1726 /* If this is the first .plt entry, make room for the special
1727 first entry. */
eea6121a
AM		 1728 if (s->size == 0)
1729 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1730
eea6121a 1731 h->plt.offset = s->size;
0451c93c
MS		 1732
1733 /* If this symbol is not defined in a regular file, and we are
1734 not generating a shared library, then set the symbol to this
1735 location in the .plt. This is required to make function
1736 pointers compare as equal between the normal executable and
1737 the shared library. */
1738 if (! info->shared
f5385ebf 1739 && !h->def_regular)
0451c93c
MS		 1740 {
1741 h->root.u.def.section = s;
1742 h->root.u.def.value = h->plt.offset;
1743 }
ec338859 1744
0451c93c 1745 /* Make room for this entry. */
eea6121a 1746 s->size += PLT_ENTRY_SIZE;
ec338859 1747
0451c93c
MS		 1748 /* We also need to make an entry in the .got.plt section, which
1749 will be placed in the .got section by the linker script. */
f41345a7 1750 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1751
1752 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1753 htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1754 }
1755 else
1756 {
1757 h->plt.offset = (bfd_vma) -1;
f5385ebf 1758 h->needs_plt = 0;
5236c819 1759 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1760 }
1761 }
1762 else
1763 {
1764 h->plt.offset = (bfd_vma) -1;
f5385ebf 1765 h->needs_plt = 0;
5236c819 1766 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1767 }
1768
69fc87f1
MS		 1769 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1770 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1771 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1772 we can save the dynamic TLS relocation. */
1773 if (h->got.refcount > 0
1774 && !info->shared
1775 && h->dynindx == -1
1776 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1777 {
1778 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1779 /* For the GOTIE access without a literal pool entry the offset has
1780 to be stored somewhere. The immediate value in the instruction
1781 is not bit enough so the value is stored in the got. */
1782 {
f41345a7
AK		 1783 h->got.offset = htab->elf.sgot->size;
1784 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1785 }
1786 else
1787 h->got.offset = (bfd_vma) -1;
1788 }
1789 else if (h->got.refcount > 0)
0451c93c
MS		 1790 {
1791 asection *s;
b34976b6 1792 bfd_boolean dyn;
69fc87f1 1793 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1794
1795 /* Make sure this symbol is output as a dynamic symbol.
1796 Undefined weak syms won't yet be marked as dynamic. */
1797 if (h->dynindx == -1
f5385ebf 1798 && !h->forced_local)
0451c93c 1799 {
c152c796 1800 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1801 return FALSE;
0451c93c
MS		 1802 }
1803
f41345a7 1804 s = htab->elf.sgot;
eea6121a
AM		 1805 h->got.offset = s->size;
1806 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1807 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1808 if (tls_type == GOT_TLS_GD)
eea6121a 1809 s->size += GOT_ENTRY_SIZE;
0451c93c 1810 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1811 /* R_390_TLS_IE64 needs one dynamic relocation,
1812 R_390_TLS_GD64 needs one if local symbol and two if global. */
1813 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1814 || tls_type >= GOT_TLS_IE)
f41345a7 1815 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1 1816 else if (tls_type == GOT_TLS_GD)
f41345a7 1817 htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
82058a73
MS		 1818 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1819 || h->root.type != bfd_link_hash_undefweak)
1820 && (info->shared
1821 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1822 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1823 }
1824 else
1825 h->got.offset = (bfd_vma) -1;
1826
0451c93c 1827 if (eh->dyn_relocs == NULL)
b34976b6 1828 return TRUE;
0451c93c
MS		 1829
1830 /* In the shared -Bsymbolic case, discard space allocated for
1831 dynamic pc-relative relocs against symbols which turn out to be
1832 defined in regular objects. For the normal shared case, discard
1833 space for pc-relative relocs that have become local due to symbol
1834 visibility changes. */
1835
1836 if (info->shared)
1837 {
8c21ca21 1838 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1839 {
00d8c7a9 1840 struct elf_dyn_relocs **pp;
0451c93c
MS		 1841
1842 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1843 {
1844 p->count -= p->pc_count;
1845 p->pc_count = 0;
1846 if (p->count == 0)
1847 *pp = p->next;
1848 else
1849 pp = &p->next;
1850 }
1851 }
82058a73
MS		 1852
1853 /* Also discard relocs on undefined weak syms with non-default
1854 visibility. */
22d606e9 1855 if (eh->dyn_relocs != NULL
82058a73 1856 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 1857 {
1858 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1859 eh->dyn_relocs = NULL;
1860
1861 /* Make sure undefined weak symbols are output as a dynamic
1862 symbol in PIEs. */
1863 else if (h->dynindx == -1
1864 && !h->forced_local)
1865 {
1866 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1867 return FALSE;
1868 }
1869 }
0451c93c 1870 }
64285810 1871 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1872 {
1873 /* For the non-shared case, discard space for relocs against
1874 symbols which turn out to need copy relocs or are not
1875 dynamic. */
1876
f5385ebf
AM		 1877 if (!h->non_got_ref
1878 && ((h->def_dynamic
1879 && !h->def_regular)
0451c93c
MS		 1880 || (htab->elf.dynamic_sections_created
1881 && (h->root.type == bfd_link_hash_undefweak
1882 || h->root.type == bfd_link_hash_undefined))))
1883 {
1884 /* Make sure this symbol is output as a dynamic symbol.
1885 Undefined weak syms won't yet be marked as dynamic. */
1886 if (h->dynindx == -1
f5385ebf 1887 && !h->forced_local)
0451c93c 1888 {
c152c796 1889 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1890 return FALSE;
0451c93c
MS		 1891 }
1892
1893 /* If that succeeded, we know we'll be keeping all the
1894 relocs. */
1895 if (h->dynindx != -1)
1896 goto keep;
1897 }
1898
1899 eh->dyn_relocs = NULL;
1900
ec338859 1901 keep: ;
0451c93c
MS		 1902 }
1903
1904 /* Finally, allocate space. */
1905 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1906 {
1907 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1908 sreloc->size += p->count * sizeof (Elf64_External_Rela);
0451c93c
MS		 1909 }
1910
b34976b6 1911 return TRUE;
0451c93c
MS		 1912}
1913
1914/* Find any dynamic relocs that apply to read-only sections. */
1915
b34976b6 1916static bfd_boolean
2c3fc389 1917readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1918{
1919 struct elf_s390_link_hash_entry *eh;
00d8c7a9 1920 struct elf_dyn_relocs *p;
0451c93c
MS		 1921
1922 eh = (struct elf_s390_link_hash_entry *) h;
1923 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1924 {
1925 asection *s = p->sec->output_section;
1926
1927 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1928 {
1929 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1930
1931 info->flags |= DF_TEXTREL;
1932
1933 /* Not an error, just cut short the traversal. */
b34976b6 1934 return FALSE;
0451c93c
MS		 1935 }
1936 }
b34976b6 1937 return TRUE;
0451c93c
MS		 1938}
1939
a85d7ed0
NC		 1940/* Set the sizes of the dynamic sections. */
1941
b34976b6 1942static bfd_boolean
4dfe6ac6
NC		 1943elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1944 struct bfd_link_info *info)
a85d7ed0 1945{
0451c93c 1946 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1947 bfd *dynobj;
1948 asection *s;
b34976b6 1949 bfd_boolean relocs;
0451c93c 1950 bfd *ibfd;
a85d7ed0 1951
0451c93c 1952 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 1953 if (htab == NULL)
1954 return FALSE;
1955
0451c93c
MS		 1956 dynobj = htab->elf.dynobj;
1957 if (dynobj == NULL)
1958 abort ();
a85d7ed0 1959
0451c93c 1960 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1961 {
1962 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 1963 if (info->executable)
a85d7ed0 1964 {
3d4d4302 1965 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 1966 if (s == NULL)
1967 abort ();
eea6121a 1968 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 1969 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1970 }
1971 }
a85d7ed0 1972
0451c93c
MS		 1973 /* Set up .got offsets for local syms, and space for local dynamic
1974 relocs. */
1975 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
a85d7ed0 1976 {
0451c93c
MS		 1977 bfd_signed_vma *local_got;
1978 bfd_signed_vma *end_local_got;
69fc87f1 1979 char *local_tls_type;
0451c93c
MS		 1980 bfd_size_type locsymcount;
1981 Elf_Internal_Shdr *symtab_hdr;
1982 asection *srela;
470b557a
AK		 1983 struct plt_entry *local_plt;
1984 unsigned int i;
a85d7ed0 1985
0ffa91dd 1986 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 1987 continue;
1988
0451c93c 1989 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 1990 {
00d8c7a9 1991 struct elf_dyn_relocs *p;
0451c93c 1992
6edfbbad 1993 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 1994 {
ec338859
AM		 1995 if (!bfd_is_abs_section (p->sec)
1996 && bfd_is_abs_section (p->sec->output_section))
1997 {
1998 /* Input section has been discarded, either because
1999 it is a copy of a linkonce section or due to
2000 linker script /DISCARD/, so we'll be discarding
2001 the relocs too. */
2002 }
248866a8 2003 else if (p->count != 0)
ec338859
AM		 2004 {
2005 srela = elf_section_data (p->sec)->sreloc;
eea6121a 2006 srela->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 2007 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2008 info->flags |= DF_TEXTREL;
ec338859 2009 }
a85d7ed0
NC		 2010 }
2011 }
0451c93c
MS		 2012
2013 local_got = elf_local_got_refcounts (ibfd);
2014 if (!local_got)
2015 continue;
2016
0ffa91dd 2017 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 2018 locsymcount = symtab_hdr->sh_info;
2019 end_local_got = local_got + locsymcount;
69fc87f1 2020 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 2021 s = htab->elf.sgot;
2022 srela = htab->elf.srelgot;
69fc87f1 2023 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 2024 {
0451c93c 2025 if (*local_got > 0)
a85d7ed0 2026 {
eea6121a
AM		 2027 *local_got = s->size;
2028 s->size += GOT_ENTRY_SIZE;
69fc87f1 2029 if (*local_tls_type == GOT_TLS_GD)
eea6121a 2030 s->size += GOT_ENTRY_SIZE;
0451c93c 2031 if (info->shared)
eea6121a 2032 srela->size += sizeof (Elf64_External_Rela);
a85d7ed0
NC		 2033 }
2034 else
0451c93c 2035 *local_got = (bfd_vma) -1;
a85d7ed0 2036 }
470b557a
AK		 2037
2038 local_plt = elf_s390_local_plt (ibfd);
2039 for (i = 0; i < symtab_hdr->sh_info; i++)
2040 {
2041 if (local_plt[i].plt.refcount > 0)
2042 {
2043 local_plt[i].plt.offset = htab->elf.iplt->size;
2044 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2045 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2046 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
2047 }
2048 else
2049 local_plt[i].plt.offset = (bfd_vma) -1;
2050 }
0451c93c
MS		 2051 }
2052
69fc87f1
MS		 2053 if (htab->tls_ldm_got.refcount > 0)
2054 {
2055 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
2056 relocs. */
f41345a7
AK		 2057 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2058 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2059 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1
MS		 2060 }
2061 else
2062 htab->tls_ldm_got.offset = -1;
2063
0451c93c
MS		 2064 /* Allocate global sym .plt and .got entries, and space for global
2065 sym dynamic relocs. */
2c3fc389 2066 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 2067
2068 /* We now have determined the sizes of the various dynamic sections.
2069 Allocate memory for them. */
b34976b6 2070 relocs = FALSE;
0451c93c
MS		 2071 for (s = dynobj->sections; s != NULL; s = s->next)
2072 {
2073 if ((s->flags & SEC_LINKER_CREATED) == 0)
2074 continue;
2075
f41345a7
AK		 2076 if (s == htab->elf.splt
2077 || s == htab->elf.sgot
2078 || s == htab->elf.sgotplt
470b557a
AK		 2079 || s == htab->sdynbss
2080 || s == htab->elf.iplt
2081 || s == htab->elf.igotplt
2082 || s == htab->irelifunc)
0451c93c
MS		 2083 {
2084 /* Strip this section if we don't need it; see the
2085 comment below. */
2086 }
0112cd26 2087 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 2088 {
f41345a7 2089 if (s->size != 0 && s != htab->elf.srelplt)
b34976b6 2090 relocs = TRUE;
ec338859 2091
0451c93c
MS		 2092 /* We use the reloc_count field as a counter if we need
2093 to copy relocs into the output file. */
2094 s->reloc_count = 0;
2095 }
2096 else
a85d7ed0
NC		 2097 {
2098 /* It's not one of our sections, so don't allocate space. */
2099 continue;
2100 }
2101
eea6121a 2102 if (s->size == 0)
a85d7ed0 2103 {
0451c93c
MS		 2104 /* If we don't need this section, strip it from the
2105 output file. This is to handle .rela.bss and
2106 .rela.plt. We must create it in
2107 create_dynamic_sections, because it must be created
2108 before the linker maps input sections to output
2109 sections. The linker does that before
2110 adjust_dynamic_symbol is called, and it is that
2111 function which decides whether anything needs to go
2112 into these sections. */
2113
8423293d 2114 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 2115 continue;
2116 }
2117
c456f082
AM		 2118 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2119 continue;
2120
0451c93c
MS		 2121 /* Allocate memory for the section contents. We use bfd_zalloc
2122 here in case unused entries are not reclaimed before the
2123 section's contents are written out. This should not happen,
2124 but this way if it does, we get a R_390_NONE reloc instead
2125 of garbage. */
eea6121a 2126 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 2127 if (s->contents == NULL)
b34976b6 2128 return FALSE;
a85d7ed0
NC		 2129 }
2130
0451c93c 2131 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2132 {
2133 /* Add some entries to the .dynamic section. We fill in the
2134 values later, in elf_s390_finish_dynamic_sections, but we
2135 must add the entries now so that we get the correct size for
2136 the .dynamic section. The DT_DEBUG entry is filled in by the
2137 dynamic linker and used by the debugger. */
dc810e39 2138#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2139 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2140
36af4a4e 2141 if (info->executable)
a85d7ed0 2142 {
dc810e39 2143 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2144 return FALSE;
a85d7ed0
NC		 2145 }
2146
f41345a7 2147 if (htab->elf.splt->size != 0)
a85d7ed0 2148 {
dc810e39
AM		 2149 if (!add_dynamic_entry (DT_PLTGOT, 0)
2150 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2151 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2152 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2153 return FALSE;
a85d7ed0
NC		 2154 }
2155
2156 if (relocs)
947216bf
AM		 2157 {
2158 if (!add_dynamic_entry (DT_RELA, 0)
2159 || !add_dynamic_entry (DT_RELASZ, 0)
2160 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 2161 return FALSE;
ec338859 2162
0451c93c
MS		 2163 /* If any dynamic relocs apply to a read-only section,
2164 then we need a DT_TEXTREL entry. */
248866a8
AM		 2165 if ((info->flags & DF_TEXTREL) == 0)
2166 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2c3fc389 2167 info);
ec338859 2168
0451c93c
MS		 2169 if ((info->flags & DF_TEXTREL) != 0)
2170 {
2171 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2172 return FALSE;
0451c93c 2173 }
a85d7ed0
NC		 2174 }
2175 }
dc810e39 2176#undef add_dynamic_entry
a85d7ed0 2177
b34976b6 2178 return TRUE;
a85d7ed0
NC		 2179}
2180
69fc87f1
MS		 2181/* Return the base VMA address which should be subtracted from real addresses
2182 when resolving @dtpoff relocation.
2183 This is PT_TLS segment p_vaddr. */
2184
2185static bfd_vma
2c3fc389 2186dtpoff_base (struct bfd_link_info *info)
69fc87f1 2187{
e1918d23
AM		 2188 /* If tls_sec is NULL, we should have signalled an error already. */
2189 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2190 return 0;
e1918d23 2191 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2192}
2193
2194/* Return the relocation value for @tpoff relocation
2195 if STT_TLS virtual address is ADDRESS. */
2196
2197static bfd_vma
2c3fc389 2198tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2199{
e1918d23 2200 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2201
e1918d23
AM		 2202 /* If tls_sec is NULL, we should have signalled an error already. */
2203 if (htab->tls_sec == NULL)
69fc87f1 2204 return 0;
e1918d23 2205 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2206}
2207
2208/* Complain if TLS instruction relocation is against an invalid
2209 instruction. */
2210
2211static void
2c3fc389
NC		 2212invalid_tls_insn (bfd *input_bfd,
2213 asection *input_section,
2214 Elf_Internal_Rela *rel)
69fc87f1
MS		 2215{
2216 reloc_howto_type *howto;
2217
2218 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
2219 (*_bfd_error_handler)
d003868e
AM		 2220 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2221 input_bfd,
2222 input_section,
69fc87f1
MS		 2223 (long) rel->r_offset,
2224 howto->name);
77df2968 2225 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2226}
2227
a85d7ed0
NC		 2228/* Relocate a 390 ELF section. */
2229
b34976b6 2230static bfd_boolean
4dfe6ac6
NC		 2231elf_s390_relocate_section (bfd *output_bfd,
2232 struct bfd_link_info *info,
2233 bfd *input_bfd,
2234 asection *input_section,
2235 bfd_byte *contents,
2236 Elf_Internal_Rela *relocs,
2237 Elf_Internal_Sym *local_syms,
2238 asection **local_sections)
a85d7ed0 2239{
0451c93c 2240 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2241 Elf_Internal_Shdr *symtab_hdr;
2242 struct elf_link_hash_entry **sym_hashes;
2243 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2244 Elf_Internal_Rela *rel;
2245 Elf_Internal_Rela *relend;
2246
0ffa91dd
NC		 2247 BFD_ASSERT (is_s390_elf (input_bfd));
2248
0451c93c 2249 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 2250 if (htab == NULL)
2251 return FALSE;
2252
0ffa91dd 2253 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2254 sym_hashes = elf_sym_hashes (input_bfd);
2255 local_got_offsets = elf_local_got_offsets (input_bfd);
2256
a85d7ed0
NC		 2257 rel = relocs;
2258 relend = relocs + input_section->reloc_count;
2259 for (; rel < relend; rel++)
2260 {
5236c819 2261 unsigned int r_type;
a85d7ed0
NC		 2262 reloc_howto_type *howto;
2263 unsigned long r_symndx;
2264 struct elf_link_hash_entry *h;
2265 Elf_Internal_Sym *sym;
2266 asection *sec;
0451c93c 2267 bfd_vma off;
a85d7ed0 2268 bfd_vma relocation;
b34976b6 2269 bfd_boolean unresolved_reloc;
a85d7ed0 2270 bfd_reloc_status_type r;
69fc87f1 2271 int tls_type;
470b557a 2272 asection *base_got = htab->elf.sgot;
a85d7ed0
NC		 2273
2274 r_type = ELF64_R_TYPE (rel->r_info);
0451c93c 2275 if (r_type == (int) R_390_GNU_VTINHERIT
947216bf
AM		 2276 || r_type == (int) R_390_GNU_VTENTRY)
2277 continue;
5236c819 2278 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2279 {
2280 bfd_set_error (bfd_error_bad_value);
b34976b6 2281 return FALSE;
a85d7ed0 2282 }
a85d7ed0 2283
b491616a 2284 howto = elf_howto_table + r_type;
a85d7ed0 2285 r_symndx = ELF64_R_SYM (rel->r_info);
5236c819 2286
a85d7ed0
NC		 2287 h = NULL;
2288 sym = NULL;
2289 sec = NULL;
b34976b6 2290 unresolved_reloc = FALSE;
a85d7ed0
NC		 2291 if (r_symndx < symtab_hdr->sh_info)
2292 {
2293 sym = local_syms + r_symndx;
2294 sec = local_sections[r_symndx];
470b557a
AK		 2295
2296 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2297 {
2298 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2299 if (local_plt == NULL)
2300 return FALSE;
2301
2302 /* Address of the PLT slot. */
2303 relocation = (htab->elf.iplt->output_section->vma
2304 + htab->elf.iplt->output_offset
2305 + local_plt[r_symndx].plt.offset);
2306
2307 switch (r_type)
2308 {
31db78f6
AK		 2309 case R_390_PLTOFF16:
2310 case R_390_PLTOFF32:
2311 case R_390_PLTOFF64:
2312 relocation -= htab->elf.sgot->output_section->vma;
2313 break;
470b557a
AK		 2314 case R_390_GOTPLT12:
2315 case R_390_GOTPLT16:
2316 case R_390_GOTPLT20:
2317 case R_390_GOTPLT32:
2318 case R_390_GOTPLT64:
2319 case R_390_GOTPLTENT:
2320 case R_390_GOT12:
2321 case R_390_GOT16:
2322 case R_390_GOT20:
2323 case R_390_GOT32:
2324 case R_390_GOT64:
2325 case R_390_GOTENT:
2326 {
2327 /* Write the PLT slot address into the GOT slot. */
2328 bfd_put_64 (output_bfd, relocation,
2329 htab->elf.sgot->contents +
2330 local_got_offsets[r_symndx]);
2331 relocation = (local_got_offsets[r_symndx] +
2332 htab->elf.sgot->output_offset);
2333
2334 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2335 relocation += htab->elf.sgot->output_section->vma;
2336 break;
2337 }
2338 default:
2339 break;
2340 }
2341 /* The output section is needed later in
2342 finish_dynamic_section when creating the dynamic
2343 relocation. */
2344 local_plt[r_symndx].sec = sec;
2345 goto do_relocation;
2346 }
2347 else
2348 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2349 }
2350 else
2351 {
560e09e9 2352 bfd_boolean warned ATTRIBUTE_UNUSED;
0451c93c 2353
b2a8e766
AM		 2354 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2355 r_symndx, symtab_hdr, sym_hashes,
2356 h, sec, relocation,
2357 unresolved_reloc, warned);
a85d7ed0
NC		 2358 }
2359
dbaa2011 2360 if (sec != NULL && discarded_section (sec))
e4067dbb 2361 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2362 rel, 1, relend, howto, 0, contents);
ab96bf03
AM		 2363
2364 if (info->relocatable)
2365 continue;
2366
a85d7ed0
NC		 2367 switch (r_type)
2368 {
5236c819
MS		 2369 case R_390_GOTPLT12:
2370 case R_390_GOTPLT16:
bd1ea41b 2371 case R_390_GOTPLT20:
5236c819
MS		 2372 case R_390_GOTPLT32:
2373 case R_390_GOTPLT64:
2374 case R_390_GOTPLTENT:
2375 /* There are three cases for a GOTPLT relocation. 1) The
2376 relocation is against the jump slot entry of a plt that
2377 will get emitted to the output file. 2) The relocation
2378 is against the jump slot of a plt entry that has been
2379 removed. elf_s390_adjust_gotplt has created a GOT entry
2380 as replacement. 3) The relocation is against a local symbol.
2381 Cases 2) and 3) are the same as the GOT relocation code
2382 so we just have to test for case 1 and fall through for
2383 the other two. */
2384 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2385 {
2386 bfd_vma plt_index;
2387
470b557a
AK		 2388 if (s390_is_ifunc_symbol_p (h))
2389 {
2390 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2391 relocation = (plt_index * GOT_ENTRY_SIZE +
2392 htab->elf.igotplt->output_offset);
2393 if (r_type == R_390_GOTPLTENT)
2394 relocation += htab->elf.igotplt->output_section->vma;
2395 }
2396 else
2397 {
2398 /* Calc. index no.
2399 Current offset - size first entry / entry size. */
2400 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2401 PLT_ENTRY_SIZE;
2402
2403 /* Offset in GOT is PLT index plus GOT headers(3)
2404 times 4, addr & GOT addr. */
2405 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2406 if (r_type == R_390_GOTPLTENT)
2407 relocation += htab->elf.sgot->output_section->vma;
2408 }
5236c819 2409 unresolved_reloc = FALSE;
5236c819
MS		 2410 break;
2411 }
2412 /* Fall through. */
2413
947216bf
AM		 2414 case R_390_GOT12:
2415 case R_390_GOT16:
bd1ea41b 2416 case R_390_GOT20:
947216bf
AM		 2417 case R_390_GOT32:
2418 case R_390_GOT64:
2419 case R_390_GOTENT:
2420 /* Relocation is to the entry for this symbol in the global
2421 offset table. */
470b557a 2422 if (base_got == NULL)
0451c93c 2423 abort ();
a85d7ed0 2424
947216bf
AM		 2425 if (h != NULL)
2426 {
b34976b6 2427 bfd_boolean dyn;
a85d7ed0 2428
947216bf 2429 off = h->got.offset;
0451c93c 2430 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2431
2432 if (s390_is_ifunc_symbol_p (h))
2433 {
2434 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2435 if (off == (bfd_vma)-1)
2436 {
2437 /* No explicit GOT usage so redirect to the
2438 got.iplt slot. */
2439 base_got = htab->elf.igotplt;
2440 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2441 }
2442 else
2443 {
2444 /* Explicit GOT slots must contain the address
2445 of the PLT slot. This will be handled in
2446 finish_dynamic_symbol. */
2447 }
2448 }
2449 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2450 || (info->shared
2451 && SYMBOL_REFERENCES_LOCAL (info, h))
2452 || (ELF_ST_VISIBILITY (h->other)
2453 && h->root.type == bfd_link_hash_undefweak))
947216bf
AM		 2454 {
2455 /* This is actually a static link, or it is a
2456 -Bsymbolic link and the symbol is defined
2457 locally, or the symbol was forced to be local
2458 because of a version file. We must initialize
2459 this entry in the global offset table. Since the
2460 offset must always be a multiple of 2, we use the
2461 least significant bit to record whether we have
2462 initialized it already.
2463
2464 When doing a dynamic link, we create a .rel.got
2465 relocation entry to initialize the value. This
2466 is done in the finish_dynamic_symbol routine. */
2467 if ((off & 1) != 0)
2468 off &= ~1;
2469 else
2470 {
a85d7ed0 2471 bfd_put_64 (output_bfd, relocation,
470b557a 2472 base_got->contents + off);
947216bf
AM		 2473 h->got.offset |= 1;
2474 }
2475 }
0451c93c 2476 else
b34976b6 2477 unresolved_reloc = FALSE;
947216bf
AM		 2478 }
2479 else
2480 {
0451c93c
MS		 2481 if (local_got_offsets == NULL)
2482 abort ();
a85d7ed0 2483
947216bf 2484 off = local_got_offsets[r_symndx];
a85d7ed0 2485
947216bf
AM		 2486 /* The offset must always be a multiple of 8. We use
2487 the least significant bit to record whether we have
2488 already generated the necessary reloc. */
2489 if ((off & 1) != 0)
2490 off &= ~1;
2491 else
2492 {
2493 bfd_put_64 (output_bfd, relocation,
f41345a7 2494 htab->elf.sgot->contents + off);
a85d7ed0 2495
947216bf
AM		 2496 if (info->shared)
2497 {
2498 asection *s;
2499 Elf_Internal_Rela outrel;
2500 bfd_byte *loc;
a85d7ed0 2501
f41345a7 2502 s = htab->elf.srelgot;
947216bf 2503 if (s == NULL)
0451c93c 2504 abort ();
a85d7ed0 2505
f41345a7
AK		 2506 outrel.r_offset = (htab->elf.sgot->output_section->vma
2507 + htab->elf.sgot->output_offset
947216bf
AM		 2508 + off);
2509 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2510 outrel.r_addend = relocation;
947216bf
AM		 2511 loc = s->contents;
2512 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2513 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2514 }
a85d7ed0 2515
947216bf
AM		 2516 local_got_offsets[r_symndx] |= 1;
2517 }
2518 }
a85d7ed0 2519
0451c93c
MS		 2520 if (off >= (bfd_vma) -2)
2521 abort ();
2522
470b557a 2523 relocation = base_got->output_offset + off;
0451c93c 2524
ae9a127f
NC		 2525 /* For @GOTENT the relocation is against the offset between
2526 the instruction and the symbols entry in the GOT and not
2527 between the start of the GOT and the symbols entry. We
2528 add the vma of the GOT to get the correct value. */
5236c819
MS		 2529 if ( r_type == R_390_GOTENT
2530 || r_type == R_390_GOTPLTENT)
470b557a 2531 relocation += base_got->output_section->vma;
a85d7ed0 2532
947216bf 2533 break;
99c79b2e 2534
5236c819
MS		 2535 case R_390_GOTOFF16:
2536 case R_390_GOTOFF32:
2537 case R_390_GOTOFF64:
947216bf
AM		 2538 /* Relocation is relative to the start of the global offset
2539 table. */
a85d7ed0 2540
947216bf
AM		 2541 /* Note that sgot->output_offset is not involved in this
2542 calculation. We always want the start of .got. If we
2543 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2544 permitted by the ABI, we might have to change this
2545 calculation. */
f41345a7 2546 relocation -= htab->elf.sgot->output_section->vma;
947216bf 2547 break;
a85d7ed0 2548
947216bf 2549 case R_390_GOTPC:
a85d7ed0 2550 case R_390_GOTPCDBL:
947216bf 2551 /* Use global offset table as symbol value. */
f41345a7 2552 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2553 unresolved_reloc = FALSE;
947216bf 2554 break;
a85d7ed0 2555
947216bf
AM		 2556 case R_390_PLT16DBL:
2557 case R_390_PLT32:
2558 case R_390_PLT32DBL:
2559 case R_390_PLT64:
2560 /* Relocation is to the entry for this symbol in the
2561 procedure linkage table. */
a85d7ed0 2562
947216bf
AM		 2563 /* Resolve a PLT32 reloc against a local symbol directly,
2564 without using the procedure linkage table. */
2565 if (h == NULL)
2566 break;
a85d7ed0 2567
947216bf 2568 if (h->plt.offset == (bfd_vma) -1
31db78f6 2569 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
947216bf
AM		 2570 {
2571 /* We didn't make a PLT entry for this symbol. This
2572 happens when statically linking PIC code, or when
2573 using -Bsymbolic. */
2574 break;
2575 }
470b557a
AK		 2576 if (s390_is_ifunc_symbol_p (h))
2577 relocation = (htab->elf.iplt->output_section->vma
2578 + htab->elf.iplt->output_offset
2579 + h->plt.offset);
2580 else
2581 relocation = (htab->elf.splt->output_section->vma
2582 + htab->elf.splt->output_offset
2583 + h->plt.offset);
b34976b6 2584 unresolved_reloc = FALSE;
26e41594 2585 break;
5236c819
MS		 2586
2587 case R_390_PLTOFF16:
2588 case R_390_PLTOFF32:
2589 case R_390_PLTOFF64:
26e41594
AM		 2590 /* Relocation is to the entry for this symbol in the
2591 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2592
2593 /* For local symbols or if we didn't make a PLT entry for
2594 this symbol resolve the symbol directly. */
31db78f6 2595 if (h == NULL
5236c819 2596 || h->plt.offset == (bfd_vma) -1
31db78f6 2597 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2598 {
f41345a7 2599 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS		 2600 break;
2601 }
2602
470b557a
AK		 2603 if (s390_is_ifunc_symbol_p (h))
2604 relocation = (htab->elf.iplt->output_section->vma
2605 + htab->elf.iplt->output_offset
2606 + h->plt.offset
2607 - htab->elf.sgot->output_section->vma);
2608 else
2609 relocation = (htab->elf.splt->output_section->vma
2610 + htab->elf.splt->output_offset
2611 + h->plt.offset
2612 - htab->elf.sgot->output_section->vma);
5236c819 2613 unresolved_reloc = FALSE;
947216bf
AM		 2614 break;
2615
2616 case R_390_8:
2617 case R_390_16:
2618 case R_390_32:
2619 case R_390_64:
2620 case R_390_PC16:
2621 case R_390_PC16DBL:
2622 case R_390_PC32:
a85d7ed0 2623 case R_390_PC32DBL:
947216bf 2624 case R_390_PC64:
470b557a
AK		 2625
2626 if (h != NULL
2627 && s390_is_ifunc_symbol_p (h)
2628 && h->def_regular)
2629 {
2630 if (!info->shared || !h->non_got_ref)
2631 {
2632 /* For a non-shared object STT_GNU_IFUNC symbol must
2633 go through PLT. */
2634 relocation = (htab->elf.iplt->output_section->vma
2635 + htab->elf.iplt->output_offset
2636 + h ->plt.offset);
2637 goto do_relocation;
2638 }
2639 else
2640 {
2641 /* For shared objects a runtime relocation is needed. */
2642
2643 Elf_Internal_Rela outrel;
2644 asection *sreloc;
2645
2646 /* Need a dynamic relocation to get the real function
2647 address. */
2648 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2649 info,
2650 input_section,
2651 rel->r_offset);
2652 if (outrel.r_offset == (bfd_vma) -1
2653 || outrel.r_offset == (bfd_vma) -2)
2654 abort ();
2655
2656 outrel.r_offset += (input_section->output_section->vma
2657 + input_section->output_offset);
2658
2659 if (h->dynindx == -1
2660 || h->forced_local
2661 || info->executable)
2662 {
2663 /* This symbol is resolved locally. */
2664 outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
2665 outrel.r_addend = (h->root.u.def.value
2666 + h->root.u.def.section->output_section->vma
2667 + h->root.u.def.section->output_offset);
2668 }
2669 else
2670 {
2671 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2672 outrel.r_addend = 0;
2673 }
2674
2675 sreloc = htab->elf.irelifunc;
2676 elf_append_rela (output_bfd, sreloc, &outrel);
2677
2678 /* If this reloc is against an external symbol, we
2679 do not want to fiddle with the addend. Otherwise,
2680 we need to include the symbol value so that it
2681 becomes an addend for the dynamic reloc. For an
2682 internal symbol, we have updated addend. */
2683 continue;
2684 }
2685 }
2686
b1e24c02 2687 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2688 break;
2689
947216bf 2690 if ((info->shared
82058a73
MS		 2691 && (h == NULL
2692 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2693 || h->root.type != bfd_link_hash_undefweak)
0451c93c
MS		 2694 && ((r_type != R_390_PC16
2695 && r_type != R_390_PC16DBL
2696 && r_type != R_390_PC32
2697 && r_type != R_390_PC32DBL
2698 && r_type != R_390_PC64)
8c21ca21 2699 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810
MS		 2700 || (ELIMINATE_COPY_RELOCS
2701 && !info->shared
0451c93c
MS		 2702 && h != NULL
2703 && h->dynindx != -1
f5385ebf
AM		 2704 && !h->non_got_ref
2705 && ((h->def_dynamic
2706 && !h->def_regular)
0451c93c
MS		 2707 || h->root.type == bfd_link_hash_undefweak
2708 || h->root.type == bfd_link_hash_undefined)))
947216bf
AM		 2709 {
2710 Elf_Internal_Rela outrel;
b34976b6 2711 bfd_boolean skip, relocate;
0451c93c 2712 asection *sreloc;
947216bf 2713 bfd_byte *loc;
a85d7ed0 2714
947216bf
AM		 2715 /* When generating a shared object, these relocations
2716 are copied into the output file to be resolved at run
2717 time. */
b34976b6
AM		 2718 skip = FALSE;
2719 relocate = FALSE;
a85d7ed0 2720
c629eae0
JJ		 2721 outrel.r_offset =
2722 _bfd_elf_section_offset (output_bfd, info, input_section,
2723 rel->r_offset);
2724 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2725 skip = TRUE;
0bb2d96a 2726 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2727 skip = TRUE, relocate = TRUE;
a85d7ed0 2728
947216bf
AM		 2729 outrel.r_offset += (input_section->output_section->vma
2730 + input_section->output_offset);
a85d7ed0 2731
947216bf 2732 if (skip)
0bb2d96a 2733 memset (&outrel, 0, sizeof outrel);
947216bf 2734 else if (h != NULL
0451c93c
MS		 2735 && h->dynindx != -1
2736 && (r_type == R_390_PC16
2737 || r_type == R_390_PC16DBL
2738 || r_type == R_390_PC32
2739 || r_type == R_390_PC32DBL
2740 || r_type == R_390_PC64
2741 || !info->shared
8c21ca21 2742 || !SYMBOLIC_BIND (info, h)
f5385ebf 2743 || !h->def_regular))
947216bf
AM		 2744 {
2745 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
27018c3f 2746 outrel.r_addend = rel->r_addend;
947216bf
AM		 2747 }
2748 else
2749 {
0451c93c 2750 /* This symbol is local, or marked to become local. */
90ced0dd 2751 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2752 if (r_type == R_390_64)
2753 {
2754 relocate = TRUE;
2755 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2756 }
2757 else
2758 {
2759 long sindx;
2760
90ced0dd 2761 if (bfd_is_abs_section (sec))
b5727d75
MS		 2762 sindx = 0;
2763 else if (sec == NULL || sec->owner == NULL)
2764 {
2765 bfd_set_error(bfd_error_bad_value);
2766 return FALSE;
2767 }
2768 else
2769 {
2770 asection *osec;
2771
2772 osec = sec->output_section;
2773 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2774
2775 if (sindx == 0)
2776 {
2777 osec = htab->elf.text_index_section;
2778 sindx = elf_section_data (osec)->dynindx;
2779 }
2780 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2781
2782 /* We are turning this relocation into one
2783 against a section symbol, so subtract out
2784 the output section's address but not the
2785 offset of the input section in the output
2786 section. */
90ced0dd 2787 outrel.r_addend -= osec->vma;
b5727d75
MS		 2788 }
2789 outrel.r_info = ELF64_R_INFO (sindx, r_type);
b5727d75 2790 }
0451c93c 2791 }
a85d7ed0 2792
0451c93c
MS		 2793 sreloc = elf_section_data (input_section)->sreloc;
2794 if (sreloc == NULL)
2795 abort ();
2796
947216bf
AM		 2797 loc = sreloc->contents;
2798 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2799 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
a85d7ed0 2800
947216bf
AM		 2801 /* If this reloc is against an external symbol, we do
2802 not want to fiddle with the addend. Otherwise, we
2803 need to include the symbol value so that it becomes
2804 an addend for the dynamic reloc. */
2805 if (! relocate)
2806 continue;
2807 }
a85d7ed0 2808
947216bf 2809 break;
a85d7ed0 2810
69fc87f1
MS		 2811 /* Relocations for tls literal pool entries. */
2812 case R_390_TLS_IE64:
2813 if (info->shared)
2814 {
2815 Elf_Internal_Rela outrel;
2816 asection *sreloc;
2817 bfd_byte *loc;
2818
2819 outrel.r_offset = rel->r_offset
2820 + input_section->output_section->vma
2821 + input_section->output_offset;
2822 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2823 sreloc = elf_section_data (input_section)->sreloc;
2824 if (sreloc == NULL)
2825 abort ();
2826 loc = sreloc->contents;
2827 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2828 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2829 }
ae9a127f 2830 /* Fall through. */
69fc87f1
MS		 2831
2832 case R_390_TLS_GD64:
2833 case R_390_TLS_GOTIE64:
2834 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2835 tls_type = GOT_UNKNOWN;
2836 if (h == NULL && local_got_offsets)
2837 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2838 else if (h != NULL)
2839 {
2840 tls_type = elf_s390_hash_entry(h)->tls_type;
2841 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2842 r_type = R_390_TLS_LE64;
2843 }
2844 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2845 r_type = R_390_TLS_IE64;
2846
2847 if (r_type == R_390_TLS_LE64)
2848 {
2849 /* This relocation gets optimized away by the local exec
2850 access optimization. */
2851 BFD_ASSERT (! unresolved_reloc);
2852 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2853 contents + rel->r_offset);
2854 continue;
2855 }
2856
f41345a7 2857 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2858 abort ();
2859
2860 if (h != NULL)
2861 off = h->got.offset;
2862 else
2863 {
2864 if (local_got_offsets == NULL)
2865 abort ();
2866
2867 off = local_got_offsets[r_symndx];
2868 }
2869
2870 emit_tls_relocs:
2871
2872 if ((off & 1) != 0)
2873 off &= ~1;
26e41594 2874 else
69fc87f1
MS		 2875 {
2876 Elf_Internal_Rela outrel;
2877 bfd_byte *loc;
2878 int dr_type, indx;
2879
f41345a7 2880 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2881 abort ();
2882
f41345a7
AK		 2883 outrel.r_offset = (htab->elf.sgot->output_section->vma
2884 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2885
2886 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2887 if (r_type == R_390_TLS_GD64)
2888 dr_type = R_390_TLS_DTPMOD;
2889 else
2890 dr_type = R_390_TLS_TPOFF;
2891 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2892 outrel.r_addend = relocation - dtpoff_base (info);
2893 else
2894 outrel.r_addend = 0;
2895 outrel.r_info = ELF64_R_INFO (indx, dr_type);
f41345a7
AK		 2896 loc = htab->elf.srelgot->contents;
2897 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 2898 * sizeof (Elf64_External_Rela);
2899 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2900
2901 if (r_type == R_390_TLS_GD64)
2902 {
2903 if (indx == 0)
2904 {
2905 BFD_ASSERT (! unresolved_reloc);
2906 bfd_put_64 (output_bfd,
2907 relocation - dtpoff_base (info),
f41345a7 2908 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 2909 }
2910 else
2911 {
2912 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
2913 outrel.r_offset += GOT_ENTRY_SIZE;
2914 outrel.r_addend = 0;
f41345a7 2915 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 2916 loc += sizeof (Elf64_External_Rela);
2917 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2918 }
2919 }
2920
2921 if (h != NULL)
2922 h->got.offset |= 1;
2923 else
2924 local_got_offsets[r_symndx] |= 1;
2925 }
2926
2927 if (off >= (bfd_vma) -2)
2928 abort ();
2929 if (r_type == ELF64_R_TYPE (rel->r_info))
2930 {
f41345a7 2931 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2932 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
f41345a7 2933 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2934 unresolved_reloc = FALSE;
2935 }
2936 else
2937 {
f41345a7 2938 bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 2939 contents + rel->r_offset);
2940 continue;
2941 }
2942 break;
2943
2944 case R_390_TLS_GOTIE12:
bd1ea41b 2945 case R_390_TLS_GOTIE20:
69fc87f1
MS		 2946 case R_390_TLS_IEENT:
2947 if (h == NULL)
2948 {
2949 if (local_got_offsets == NULL)
2950 abort();
2951 off = local_got_offsets[r_symndx];
2952 if (info->shared)
2953 goto emit_tls_relocs;
2954 }
2955 else
2956 {
2957 off = h->got.offset;
2958 tls_type = elf_s390_hash_entry(h)->tls_type;
2959 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
2960 goto emit_tls_relocs;
2961 }
2962
f41345a7 2963 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2964 abort ();
2965
2966 BFD_ASSERT (! unresolved_reloc);
2967 bfd_put_64 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 2968 htab->elf.sgot->contents + off);
2969 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2970 if (r_type == R_390_TLS_IEENT)
f41345a7 2971 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 2972 unresolved_reloc = FALSE;
2973 break;
2974
2975 case R_390_TLS_LDM64:
2976 if (! info->shared)
2977 /* The literal pool entry this relocation refers to gets ignored
2978 by the optimized code of the local exec model. Do nothing
2979 and the value will turn out zero. */
2980 continue;
2981
f41345a7 2982 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2983 abort ();
2984
2985 off = htab->tls_ldm_got.offset;
2986 if (off & 1)
2987 off &= ~1;
2988 else
2989 {
2990 Elf_Internal_Rela outrel;
2991 bfd_byte *loc;
2992
f41345a7 2993 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2994 abort ();
2995
f41345a7
AK		 2996 outrel.r_offset = (htab->elf.sgot->output_section->vma
2997 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2998
2999 bfd_put_64 (output_bfd, 0,
f41345a7 3000 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3001 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
3002 outrel.r_addend = 0;
f41345a7
AK		 3003 loc = htab->elf.srelgot->contents;
3004 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3005 * sizeof (Elf64_External_Rela);
3006 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3007 htab->tls_ldm_got.offset |= 1;
3008 }
f41345a7 3009 relocation = htab->elf.sgot->output_offset + off;
26e41594 3010 unresolved_reloc = FALSE;
69fc87f1
MS		 3011 break;
3012
3013 case R_390_TLS_LE64:
3014 if (info->shared)
3015 {
3016 /* Linking a shared library with non-fpic code requires
3017 a R_390_TLS_TPOFF relocation. */
3018 Elf_Internal_Rela outrel;
3019 asection *sreloc;
3020 bfd_byte *loc;
3021 int indx;
3022
3023 outrel.r_offset = rel->r_offset
3024 + input_section->output_section->vma
3025 + input_section->output_offset;
3026 if (h != NULL && h->dynindx != -1)
3027 indx = h->dynindx;
3028 else
3029 indx = 0;
3030 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
3031 if (indx == 0)
3032 outrel.r_addend = relocation - dtpoff_base (info);
3033 else
3034 outrel.r_addend = 0;
3035 sreloc = elf_section_data (input_section)->sreloc;
3036 if (sreloc == NULL)
3037 abort ();
3038 loc = sreloc->contents;
3039 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
3040 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3041 }
3042 else
3043 {
3044 BFD_ASSERT (! unresolved_reloc);
3045 bfd_put_64 (output_bfd, -tpoff (info, relocation),
3046 contents + rel->r_offset);
3047 }
3048 continue;
3049
3050 case R_390_TLS_LDO64:
de8bee76 3051 if (info->shared || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 3052 relocation -= dtpoff_base (info);
3053 else
3054 /* When converting LDO to LE, we must negate. */
3055 relocation = -tpoff (info, relocation);
3056 break;
3057
3058 /* Relocations for tls instructions. */
3059 case R_390_TLS_LOAD:
3060 case R_390_TLS_GDCALL:
3061 case R_390_TLS_LDCALL:
3062 tls_type = GOT_UNKNOWN;
3063 if (h == NULL && local_got_offsets)
3064 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3065 else if (h != NULL)
3066 tls_type = elf_s390_hash_entry(h)->tls_type;
3067
3068 if (tls_type == GOT_TLS_GD)
3069 continue;
3070
3071 if (r_type == R_390_TLS_LOAD)
3072 {
3073 if (!info->shared && (h == NULL || h->dynindx == -1))
3074 {
3075 /* IE->LE transition. Four valid cases:
3076 lg %rx,(0,%ry) -> sllg %rx,%ry,0
3077 lg %rx,(%ry,0) -> sllg %rx,%ry,0
3078 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
3079 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
3080 unsigned int insn0, insn1, ry;
3081
3082 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3083 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3084 if (insn1 != 0x0004)
3085 invalid_tls_insn (input_bfd, input_section, rel);
3086 ry = 0;
3087 if ((insn0 & 0xff00f000) == 0xe3000000)
3088 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
3089 ry = (insn0 & 0x000f0000);
3090 else if ((insn0 & 0xff0f0000) == 0xe3000000)
3091 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
3092 ry = (insn0 & 0x0000f000) << 4;
3093 else if ((insn0 & 0xff00f000) == 0xe300c000)
3094 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
3095 ry = (insn0 & 0x000f0000);
3096 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
3097 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
3098 ry = (insn0 & 0x0000f000) << 4;
3099 else
3100 invalid_tls_insn (input_bfd, input_section, rel);
3101 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
3102 insn1 = 0x000d;
3103 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3104 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3105 }
3106 }
3107 else if (r_type == R_390_TLS_GDCALL)
3108 {
3109 unsigned int insn0, insn1;
3110
3111 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3112 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3113 if ((insn0 & 0xffff0000) != 0xc0e50000)
3114 invalid_tls_insn (input_bfd, input_section, rel);
3115 if (!info->shared && (h == NULL || h->dynindx == -1))
3116 {
3117 /* GD->LE transition.
3118 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3119 insn0 = 0xc0040000;
3120 insn1 = 0x0000;
3121 }
3122 else
3123 {
3124 /* GD->IE transition.
3125 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
3126 insn0 = 0xe322c000;
3127 insn1 = 0x0004;
3128 }
3129 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3130 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3131 }
3132 else if (r_type == R_390_TLS_LDCALL)
3133 {
3134 if (!info->shared)
3135 {
3136 unsigned int insn0, insn1;
3137
3138 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3139 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3140 if ((insn0 & 0xffff0000) != 0xc0e50000)
3141 invalid_tls_insn (input_bfd, input_section, rel);
3142 /* LD->LE transition.
3143 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3144 insn0 = 0xc0040000;
3145 insn1 = 0x0000;
3146 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3147 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3148 }
3149 }
3150 continue;
3151
947216bf
AM		 3152 default:
3153 break;
3154 }
a85d7ed0 3155
239e1f3a
AM		 3156 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3157 because such sections are not SEC_ALLOC and thus ld.so will
3158 not process them. */
0451c93c 3159 if (unresolved_reloc
239e1f3a 3160 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3161 && h->def_dynamic)
3162 && _bfd_elf_section_offset (output_bfd, info, input_section,
3163 rel->r_offset) != (bfd_vma) -1)
0451c93c 3164 (*_bfd_error_handler)
843fe662 3165 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3166 input_bfd,
3167 input_section,
0451c93c 3168 (long) rel->r_offset,
843fe662 3169 howto->name,
0451c93c
MS		 3170 h->root.root.string);
3171
470b557a
AK		 3172 do_relocation:
3173
bd1ea41b
MS		 3174 if (r_type == R_390_20
3175 || r_type == R_390_GOT20
3176 || r_type == R_390_GOTPLT20
3177 || r_type == R_390_TLS_GOTIE20)
3178 {
3179 relocation += rel->r_addend;
3180 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3181 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3182 contents, rel->r_offset,
3183 relocation, 0);
3184 }
3185 else
3186 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
a85d7ed0
NC		 3187 contents, rel->r_offset,
3188 relocation, rel->r_addend);
3189
3190 if (r != bfd_reloc_ok)
3191 {
0451c93c 3192 const char *name;
ec338859 3193
0451c93c
MS		 3194 if (h != NULL)
3195 name = h->root.root.string;
3196 else
a85d7ed0 3197 {
0451c93c
MS		 3198 name = bfd_elf_string_from_elf_section (input_bfd,
3199 symtab_hdr->sh_link,
3200 sym->st_name);
3201 if (name == NULL)
b34976b6 3202 return FALSE;
0451c93c
MS		 3203 if (*name == '\0')
3204 name = bfd_section_name (input_bfd, sec);
3205 }
ec338859 3206
0451c93c
MS		 3207 if (r == bfd_reloc_overflow)
3208 {
ec338859 3209
0451c93c 3210 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 3211 (info, (h ? &h->root : NULL), name, howto->name,
3212 (bfd_vma) 0, input_bfd, input_section,
3213 rel->r_offset)))
b34976b6 3214 return FALSE;
0451c93c
MS		 3215 }
3216 else
3217 {
3218 (*_bfd_error_handler)
d003868e
AM		 3219 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3220 input_bfd, input_section,
0451c93c 3221 (long) rel->r_offset, name, (int) r);
b34976b6 3222 return FALSE;
a85d7ed0
NC		 3223 }
3224 }
3225 }
3226
b34976b6 3227 return TRUE;
a85d7ed0
NC		 3228}
3229
470b557a
AK		 3230/* Generate the PLT slots together with the dynamic relocations needed
3231 for IFUNC symbols. */
3232
3233static void
3234elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3235 struct bfd_link_info *info,
3236 struct elf_link_hash_entry *h,
3237 struct elf_s390_link_hash_table *htab,
3238 bfd_vma plt_offset,
3239 bfd_vma resolver_address)
3240{
3241 bfd_vma plt_index;
3242 bfd_vma got_offset;
3243 Elf_Internal_Rela rela;
3244 bfd_byte *loc;
3245 asection *plt, *gotplt, *relplt;
3246
3247 if (htab->elf.iplt == NULL
3248 || htab->elf.igotplt == NULL
3249 || htab->elf.irelplt == NULL)
3250 abort ();
3251
3252 /* Index of the PLT slot within iplt section. */
3253 plt_index = plt_offset / PLT_ENTRY_SIZE;
3254 plt = htab->elf.iplt;
3255 /* Offset into the igot.plt section. */
3256 got_offset = plt_index * GOT_ENTRY_SIZE;
3257 gotplt = htab->elf.igotplt;
3258 relplt = htab->elf.irelplt;
3259
3260 /* Fill in the blueprint of a PLT. */
3261 memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
3262 PLT_ENTRY_SIZE);
3263
3264 /* Fixup the relative address to the GOT entry */
3265 bfd_put_32 (output_bfd,
3266 (gotplt->output_section->vma +
3267 gotplt->output_offset + got_offset
3268 - (plt->output_section->vma +
3269 plt->output_offset +
3270 plt_offset))/2,
3271 plt->contents + plt_offset + 2);
3272 /* Fixup the relative branch to PLT 0 */
3273 bfd_put_32 (output_bfd, - (plt->output_offset +
3274 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3275 plt->contents + plt_offset + 24);
3276 /* Fixup offset into .rela.plt section. */
3277 bfd_put_32 (output_bfd, relplt->output_offset +
3278 plt_index * sizeof (Elf64_External_Rela),
3279 plt->contents + plt_offset + 28);
3280
3281 /* Fill in the entry in the global offset table.
3282 Points to instruction after GOT offset. */
3283 bfd_put_64 (output_bfd,
3284 (plt->output_section->vma
3285 + plt->output_offset
3286 + plt_offset
3287 + 14),
3288 gotplt->contents + got_offset);
3289
3290 /* Fill in the entry in the .rela.plt section. */
3291 rela.r_offset = (gotplt->output_section->vma
3292 + gotplt->output_offset
3293 + got_offset);
3294
3295 if (!h
3296 || h->dynindx == -1
3297 || ((info->executable
3298 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3299 && h->def_regular))
3300 {
3301 /* The symbol can be locally resolved. */
3302 rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
3303 rela.r_addend = resolver_address;
3304 }
3305 else
3306 {
3307 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3308 rela.r_addend = 0;
3309 }
3310
3311 loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
3312 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3313}
3314
3315
a85d7ed0
NC		 3316/* Finish up dynamic symbol handling. We set the contents of various
3317 dynamic sections here. */
3318
b34976b6 3319static bfd_boolean
4dfe6ac6
NC		 3320elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3321 struct bfd_link_info *info,
3322 struct elf_link_hash_entry *h,
3323 Elf_Internal_Sym *sym)
a85d7ed0 3324{
0451c93c 3325 struct elf_s390_link_hash_table *htab;
470b557a 3326 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
a85d7ed0 3327
0451c93c 3328 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3329 if (htab == NULL)
3330 return FALSE;
a85d7ed0
NC		 3331
3332 if (h->plt.offset != (bfd_vma) -1)
3333 {
a85d7ed0 3334 bfd_vma plt_index;
0451c93c
MS		 3335 bfd_vma got_offset;
3336 Elf_Internal_Rela rela;
947216bf 3337 bfd_byte *loc;
a85d7ed0
NC		 3338
3339 /* This symbol has an entry in the procedure linkage table. Set
947216bf 3340 it up. */
470b557a
AK		 3341 if (s390_is_ifunc_symbol_p (h))
3342 {
3343 /* If we can resolve the IFUNC symbol locally we generate an
3344 IRELATIVE reloc. */
3345 elf_s390_finish_ifunc_symbol (output_bfd, info, h, htab, h->plt.offset,
3346 eh->ifunc_resolver_address +
3347 eh->ifunc_resolver_section->output_offset +
3348 eh->ifunc_resolver_section->output_section->vma);
3349 ;
3350 /* Fallthrough. Handling of explicit GOT slots of IFUNC
3351 symbols is below. */
3352 }
3353 else
3354 {
3355 if (h->dynindx == -1
3356 || htab->elf.splt == NULL
3357 || htab->elf.sgotplt == NULL
3358 || htab->elf.srelplt == NULL)
3359 abort ();
a85d7ed0 3360
470b557a
AK		 3361 /* Calc. index no.
3362 Current offset - size first entry / entry size. */
3363 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
a85d7ed0 3364
470b557a
AK		 3365 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
3366 addr & GOT addr. */
3367 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3368
470b557a
AK		 3369 /* Fill in the blueprint of a PLT. */
3370 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
3371 PLT_ENTRY_SIZE);
3372
3373 /* Fixup the relative address to the GOT entry */
3374 bfd_put_32 (output_bfd,
3375 (htab->elf.sgotplt->output_section->vma +
3376 htab->elf.sgotplt->output_offset + got_offset
3377 - (htab->elf.splt->output_section->vma +
3378 htab->elf.splt->output_offset +
3379 h->plt.offset))/2,
3380 htab->elf.splt->contents + h->plt.offset + 2);
3381 /* Fixup the relative branch to PLT 0 */
3382 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3383 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3384 htab->elf.splt->contents + h->plt.offset + 24);
3385 /* Fixup offset into .rela.plt section. */
3386 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3387 htab->elf.splt->contents + h->plt.offset + 28);
3388
3389 /* Fill in the entry in the global offset table.
3390 Points to instruction after GOT offset. */
3391 bfd_put_64 (output_bfd,
3392 (htab->elf.splt->output_section->vma
3393 + htab->elf.splt->output_offset
3394 + h->plt.offset
3395 + 14),
3396 htab->elf.sgotplt->contents + got_offset);
3397
3398 /* Fill in the entry in the .rela.plt section. */
3399 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3400 + htab->elf.sgotplt->output_offset
3401 + got_offset);
3402 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3403 rela.r_addend = 0;
3404 loc = htab->elf.srelplt->contents + plt_index *
3405 sizeof (Elf64_External_Rela);
3406 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3407
3408 if (!h->def_regular)
3409 {
3410 /* Mark the symbol as undefined, rather than as defined in
3411 the .plt section. Leave the value alone. This is a clue
3412 for the dynamic linker, to make function pointer
3413 comparisons work between an application and shared
3414 library. */
3415 sym->st_shndx = SHN_UNDEF;
3416 }
a85d7ed0
NC		 3417 }
3418 }
3419
69fc87f1
MS		 3420 if (h->got.offset != (bfd_vma) -1
3421 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3422 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3423 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3424 {
a85d7ed0 3425 Elf_Internal_Rela rela;
947216bf 3426 bfd_byte *loc;
a85d7ed0
NC		 3427
3428 /* This symbol has an entry in the global offset table. Set it
947216bf 3429 up. */
f41345a7 3430 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3431 abort ();
a85d7ed0 3432
f41345a7
AK		 3433 rela.r_offset = (htab->elf.sgot->output_section->vma
3434 + htab->elf.sgot->output_offset
dc810e39 3435 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0 3436
470b557a
AK		 3437 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3438 {
3439 if (info->shared)
3440 {
3441 /* An explicit GOT slot usage needs GLOB_DAT. If the
3442 symbol references local the implicit got.iplt slot
3443 will be used and the IRELATIVE reloc has been created
3444 above. */
3445 goto do_glob_dat;
3446 }
3447 else
3448 {
3449 /* For non-shared objects explicit GOT slots must be
3450 filled with the PLT slot address for pointer
3451 equality reasons. */
3452 bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
3453 + htab->elf.iplt->output_offset
3454 + h->plt.offset),
3455 htab->elf.sgot->contents + h->got.offset);
3456 return TRUE;
3457 }
3458 }
3459 else if (info->shared
8c21ca21 3460 && SYMBOL_REFERENCES_LOCAL (info, h))
947216bf 3461 {
470b557a
AK		 3462 /* If this is a static link, or it is a -Bsymbolic link and
3463 the symbol is defined locally or was forced to be local
3464 because of a version file, we just want to emit a
3465 RELATIVE reloc. The entry in the global offset table
3466 will already have been initialized in the
3467 relocate_section function. */
8c21ca21
AK		 3468 if (!h->def_regular)
3469 return FALSE;
0451c93c 3470 BFD_ASSERT((h->got.offset & 1) != 0);
947216bf
AM		 3471 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3472 rela.r_addend = (h->root.u.def.value
3473 + h->root.u.def.section->output_section->vma
3474 + h->root.u.def.section->output_offset);
3475 }
a85d7ed0
NC		 3476 else
3477 {
3478 BFD_ASSERT((h->got.offset & 1) == 0);
470b557a 3479do_glob_dat:
f41345a7 3480 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3481 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
947216bf
AM		 3482 rela.r_addend = 0;
3483 }
a85d7ed0 3484
f41345a7
AK		 3485 loc = htab->elf.srelgot->contents;
3486 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3487 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3488 }
3489
f5385ebf 3490 if (h->needs_copy)
a85d7ed0 3491 {
a85d7ed0 3492 Elf_Internal_Rela rela;
947216bf 3493 bfd_byte *loc;
a85d7ed0
NC		 3494
3495 /* This symbols needs a copy reloc. Set it up. */
3496
0451c93c
MS		 3497 if (h->dynindx == -1
3498 || (h->root.type != bfd_link_hash_defined
3499 && h->root.type != bfd_link_hash_defweak)
3500 || htab->srelbss == NULL)
3501 abort ();
a85d7ed0
NC		 3502
3503 rela.r_offset = (h->root.u.def.value
3504 + h->root.u.def.section->output_section->vma
3505 + h->root.u.def.section->output_offset);
3506 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3507 rela.r_addend = 0;
947216bf
AM		 3508 loc = htab->srelbss->contents;
3509 loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3510 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3511 }
3512
3513 /* Mark some specially defined symbols as absolute. */
9637f6ef 3514 if (h == htab->elf.hdynamic
22edb2f1
RS		 3515 || h == htab->elf.hgot
3516 || h == htab->elf.hplt)
a85d7ed0
NC		 3517 sym->st_shndx = SHN_ABS;
3518
b34976b6 3519 return TRUE;
a85d7ed0
NC		 3520}
3521
0451c93c
MS		 3522/* Used to decide how to sort relocs in an optimal manner for the
3523 dynamic linker, before writing them out. */
3524
3525static enum elf_reloc_type_class
2c3fc389 3526elf_s390_reloc_type_class (const Elf_Internal_Rela *rela)
0451c93c
MS		 3527{
3528 switch ((int) ELF64_R_TYPE (rela->r_info))
3529 {
3530 case R_390_RELATIVE:
3531 return reloc_class_relative;
3532 case R_390_JMP_SLOT:
3533 return reloc_class_plt;
3534 case R_390_COPY:
3535 return reloc_class_copy;
3536 default:
3537 return reloc_class_normal;
3538 }
3539}
3540
a85d7ed0
NC		 3541/* Finish up the dynamic sections. */
3542
b34976b6 3543static bfd_boolean
4dfe6ac6
NC		 3544elf_s390_finish_dynamic_sections (bfd *output_bfd,
3545 struct bfd_link_info *info)
a85d7ed0 3546{
0451c93c 3547 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3548 bfd *dynobj;
3549 asection *sdyn;
470b557a
AK		 3550 bfd *ibfd;
3551 unsigned int i;
a85d7ed0 3552
0451c93c 3553 htab = elf_s390_hash_table (info);
4dfe6ac6
NC		 3554 if (htab == NULL)
3555 return FALSE;
3556
0451c93c 3557 dynobj = htab->elf.dynobj;
3d4d4302 3558 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3559
0451c93c 3560 if (htab->elf.dynamic_sections_created)
a85d7ed0 3561 {
a85d7ed0
NC		 3562 Elf64_External_Dyn *dyncon, *dynconend;
3563
f41345a7 3564 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3565 abort ();
a85d7ed0
NC		 3566
3567 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 3568 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3569 for (; dyncon < dynconend; dyncon++)
3570 {
3571 Elf_Internal_Dyn dyn;
a85d7ed0 3572 asection *s;
ec338859 3573
a85d7ed0 3574 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3575
a85d7ed0
NC		 3576 switch (dyn.d_tag)
3577 {
3578 default:
0451c93c 3579 continue;
ec338859 3580
a85d7ed0 3581 case DT_PLTGOT:
f41345a7 3582 dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma;
0451c93c 3583 break;
ec338859 3584
a85d7ed0 3585 case DT_JMPREL:
f41345a7 3586 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
a85d7ed0 3587 break;
ec338859 3588
a85d7ed0 3589 case DT_PLTRELSZ:
f41345a7 3590 s = htab->elf.srelplt->output_section;
eea6121a 3591 dyn.d_un.d_val = s->size;
a85d7ed0 3592 break;
ec338859 3593
a85d7ed0
NC		 3594 case DT_RELASZ:
3595 /* The procedure linkage table relocs (DT_JMPREL) should
3596 not be included in the overall relocs (DT_RELA).
3597 Therefore, we override the DT_RELASZ entry here to
3598 make it not include the JMPREL relocs. Since the
3599 linker script arranges for .rela.plt to follow all
3600 other relocation sections, we don't have to worry
3601 about changing the DT_RELA entry. */
f41345a7 3602 s = htab->elf.srelplt->output_section;
eea6121a 3603 dyn.d_un.d_val -= s->size;
a85d7ed0
NC		 3604 break;
3605 }
0451c93c
MS		 3606
3607 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3608 }
3609
3610 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3611 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0
NC		 3612 {
3613 /* fill in blueprint for plt 0 entry */
f41345a7 3614 memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
9aa17453 3615 PLT_FIRST_ENTRY_SIZE);
a85d7ed0
NC		 3616 /* Fixup relative address to start of GOT */
3617 bfd_put_32 (output_bfd,
f41345a7
AK		 3618 (htab->elf.sgotplt->output_section->vma +
3619 htab->elf.sgotplt->output_offset
3620 - htab->elf.splt->output_section->vma - 6)/2,
3621 htab->elf.splt->contents + 8);
a85d7ed0 3622 }
f41345a7 3623 elf_section_data (htab->elf.splt->output_section)
0451c93c 3624 ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
a85d7ed0
NC		 3625 }
3626
f41345a7 3627 if (htab->elf.sgotplt)
a85d7ed0 3628 {
0451c93c 3629 /* Fill in the first three entries in the global offset table. */
f41345a7 3630 if (htab->elf.sgotplt->size > 0)
0451c93c
MS		 3631 {
3632 bfd_put_64 (output_bfd,
3633 (sdyn == NULL ? (bfd_vma) 0
3634 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3635 htab->elf.sgotplt->contents);
0451c93c 3636 /* One entry for shared object struct ptr. */
f41345a7 3637 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3638 /* One entry for _dl_runtime_resolve. */
f41345a7 3639 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 12);
0451c93c 3640 }
a85d7ed0 3641
f41345a7 3642 elf_section_data (htab->elf.sgot->output_section)
0451c93c
MS		 3643 ->this_hdr.sh_entsize = 8;
3644 }
470b557a
AK		 3645
3646 /* Finish dynamic symbol for local IFUNC symbols. */
3647 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3648 {
3649 struct plt_entry *local_plt;
3650 Elf_Internal_Sym *isym;
3651 Elf_Internal_Shdr *symtab_hdr;
3652
3653 symtab_hdr = &elf_symtab_hdr (ibfd);
3654
3655 local_plt = elf_s390_local_plt (ibfd);
3656 if (local_plt != NULL)
3657 for (i = 0; i < symtab_hdr->sh_info; i++)
3658 {
3659 if (local_plt[i].plt.offset != (bfd_vma) -1)
3660 {
3661 asection *sec = local_plt[i].sec;
3662 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3663 if (isym == NULL)
3664 return FALSE;
3665
3666 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3667 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3668 local_plt[i].plt.offset,
3669 isym->st_value
3670 + sec->output_section->vma
3671 + sec->output_offset);
3672
3673 }
3674 }
3675 }
3676
b34976b6 3677 return TRUE;
a85d7ed0
NC		 3678}
3679
4c45e5c9
JJ		 3680/* Return address for Ith PLT stub in section PLT, for relocation REL
3681 or (bfd_vma) -1 if it should not be included. */
3682
3683static bfd_vma
3684elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3685 const arelent *rel ATTRIBUTE_UNUSED)
3686{
3687 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3688}
3689
ae9a127f
NC		 3690/* Why was the hash table entry size definition changed from
3691 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3692 this is the only reason for the s390_elf64_size_info structure. */
a85d7ed0
NC		 3693
3694const struct elf_size_info s390_elf64_size_info =
3695{
3696 sizeof (Elf64_External_Ehdr),
3697 sizeof (Elf64_External_Phdr),
3698 sizeof (Elf64_External_Shdr),
3699 sizeof (Elf64_External_Rel),
3700 sizeof (Elf64_External_Rela),
3701 sizeof (Elf64_External_Sym),
3702 sizeof (Elf64_External_Dyn),
3703 sizeof (Elf_External_Note),
ae9a127f
NC		 3704 8, /* hash-table entry size. */
3705 1, /* internal relocations per external relocations. */
3706 64, /* arch_size. */
45d6a902 3707 3, /* log_file_align. */
a85d7ed0
NC		 3708 ELFCLASS64, EV_CURRENT,
3709 bfd_elf64_write_out_phdrs,
3710 bfd_elf64_write_shdrs_and_ehdr,
1489a3a0 3711 bfd_elf64_checksum_contents,
a85d7ed0 3712 bfd_elf64_write_relocs,
73ff0d56 3713 bfd_elf64_swap_symbol_in,
a85d7ed0
NC		 3714 bfd_elf64_swap_symbol_out,
3715 bfd_elf64_slurp_reloc_table,
3716 bfd_elf64_slurp_symbol_table,
3717 bfd_elf64_swap_dyn_in,
3718 bfd_elf64_swap_dyn_out,
947216bf
AM		 3719 bfd_elf64_swap_reloc_in,
3720 bfd_elf64_swap_reloc_out,
3721 bfd_elf64_swap_reloca_in,
3722 bfd_elf64_swap_reloca_out
a85d7ed0
NC		 3723};
3724
3725#define TARGET_BIG_SYM bfd_elf64_s390_vec
3726#define TARGET_BIG_NAME "elf64-s390"
3727#define ELF_ARCH bfd_arch_s390
ae95ffa6 3728#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 3729#define ELF_MACHINE_CODE EM_S390
3730#define ELF_MACHINE_ALT1 EM_S390_OLD
3731#define ELF_MAXPAGESIZE 0x1000
3732
3733#define elf_backend_size_info s390_elf64_size_info
3734
3735#define elf_backend_can_gc_sections 1
51b64d56 3736#define elf_backend_can_refcount 1
a85d7ed0
NC		 3737#define elf_backend_want_got_plt 1
3738#define elf_backend_plt_readonly 1
3739#define elf_backend_want_plt_sym 0
3740#define elf_backend_got_header_size 24
b491616a 3741#define elf_backend_rela_normal 1
a85d7ed0
NC		 3742
3743#define elf_info_to_howto elf_s390_info_to_howto
3744
a85d7ed0
NC		 3745#define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3746#define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3747#define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
157090f7 3748#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
a85d7ed0
NC		 3749
3750#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3751#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c
MS		 3752#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3753#define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
a85d7ed0
NC		 3754#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3755#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3756#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3757#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
0451c93c 3758#define elf_backend_reloc_type_class elf_s390_reloc_type_class
a85d7ed0
NC		 3759#define elf_backend_relocate_section elf_s390_relocate_section
3760#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 3761#define elf_backend_init_index_section _bfd_elf_init_1_index_section
29c2fb7c 3762#define elf_backend_reloc_type_class elf_s390_reloc_type_class
4c45e5c9 3763#define elf_backend_plt_sym_val elf_s390_plt_sym_val
470b557a 3764#define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
a85d7ed0 3765
69fc87f1
MS		 3766#define bfd_elf64_mkobject elf_s390_mkobject
3767#define elf_backend_object_p elf_s390_object_p
a85d7ed0 3768
2c3fc389
NC		 3769/* Enable ELF64 archive functions. */
3770#define bfd_elf64_archive_functions
3771extern bfd_boolean bfd_elf64_archive_slurp_armap (bfd *);
3772extern bfd_boolean bfd_elf64_archive_write_armap (bfd *, unsigned int, struct orl *, unsigned int, int);
3773
3774#define bfd_elf64_archive_slurp_extended_name_table _bfd_archive_coff_slurp_extended_name_table
3775#define bfd_elf64_archive_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table
3776#define bfd_elf64_archive_truncate_arname _bfd_archive_coff_truncate_arname
3777#define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr
3778#define bfd_elf64_archive_write_ar_hdr _bfd_archive_coff_write_ar_hdr
3779#define bfd_elf64_archive_openr_next_archived_file _bfd_archive_coff_openr_next_archived_file
3780#define bfd_elf64_archive_get_elt_at_index _bfd_archive_coff_get_elt_at_index
3781#define bfd_elf64_archive_generic_stat_arch_elt _bfd_archive_coff_generic_stat_arch_elt
3782#define bfd_elf64_archive_update_armap_timestamp _bfd_archive_coff_update_armap_timestamp
3783
a85d7ed0 3784#include "elf64-target.h"
A mirror of the official binutils-gdb repository