* elf-bfd.h (struct core_elf_obj_tdata): New.
[deliverable/binutils-gdb.git] / bfd / elf32-s390.c
CommitLineData
a85d7ed0 1/* IBM S/390-specific support for 32-bit ELF
7686d77d 2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
1d7e9d18 3 2011, 2012 Free Software Foundation, Inc.
a85d7ed0
NC
4 Contributed by Carl B. Pedersen and Martin Schwidefsky.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
cd123cb7 10 the Free Software Foundation; either version 3 of the License, or
a85d7ed0
NC
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
3e110533 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
53e09e0a 21 02110-1301, USA. */
a85d7ed0 22
a85d7ed0 23#include "sysdep.h"
3db64b00 24#include "bfd.h"
a85d7ed0
NC
25#include "bfdlink.h"
26#include "libbfd.h"
27#include "elf-bfd.h"
a85d7ed0
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28#include "elf/s390.h"
29
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30static bfd_reloc_status_type
31s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
32 asection *, bfd *, char **);
33static bfd_reloc_status_type
34s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
35 asection *, bfd *, char **);
36
a85d7ed0
NC
37/* The relocation "howto" table. */
38
39static reloc_howto_type elf_howto_table[] =
40{
41 HOWTO (R_390_NONE, /* type */
42 0, /* rightshift */
43 0, /* size (0 = byte, 1 = short, 2 = long) */
44 0, /* bitsize */
b34976b6 45 FALSE, /* pc_relative */
a85d7ed0
NC
46 0, /* bitpos */
47 complain_overflow_dont, /* complain_on_overflow */
48 bfd_elf_generic_reloc, /* special_function */
49 "R_390_NONE", /* name */
b34976b6 50 FALSE, /* partial_inplace */
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NC
51 0, /* src_mask */
52 0, /* dst_mask */
b34976b6
AM
53 FALSE), /* pcrel_offset */
54
5236c819
MS
55 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
56 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
57 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
58 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
59 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
60 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
61 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
62 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
63 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
64 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
15f8604d 65 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
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MS
66 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
67 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
68 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
69 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
70 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
71 HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
72 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
73 HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
74 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
75 HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
76 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
77 HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
78 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
79 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
80 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
81 HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
82 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
83 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
84 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
85 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
86 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
87 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
88 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
89 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
90 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
91 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
92 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
93 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
94 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
95 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
96 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
97 EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
98 EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
99 EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
100 EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
101 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
102 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
103 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
104 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
105 EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
106 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
107 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
108 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
109 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
110 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
111 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
112 EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
113 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
114 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE),
115 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
116 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
117 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
118 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
119 EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
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120 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
121 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
122 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
123 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
124 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
125 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
126 HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE),
128 EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */
129 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
130 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
131 HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
132 bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE),
133 EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */
134 HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
135 bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE),
136 EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */
137 HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE),
139 EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */
140 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
141 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE),
142 HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
143 bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE),
144 EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */
145 HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE),
147 EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */
148 HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE),
150 HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE),
152 HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
153 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE),
bd1ea41b
MS
154 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
155 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
156 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
157 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
158 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
159 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
160 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
161 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
470b557a
AK
162 HOWTO(R_390_IRELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, 0xffffffff, FALSE),
a85d7ed0
NC
164};
165
166/* GNU extension to record C++ vtable hierarchy. */
167static reloc_howto_type elf32_s390_vtinherit_howto =
b34976b6 168 HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
a85d7ed0 169static reloc_howto_type elf32_s390_vtentry_howto =
b34976b6 170 HOWTO (R_390_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
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NC
171
172static reloc_howto_type *
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173elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
174 bfd_reloc_code_real_type code)
a85d7ed0 175{
ec338859 176 switch (code)
0451c93c
MS
177 {
178 case BFD_RELOC_NONE:
179 return &elf_howto_table[(int) R_390_NONE];
180 case BFD_RELOC_8:
181 return &elf_howto_table[(int) R_390_8];
182 case BFD_RELOC_390_12:
183 return &elf_howto_table[(int) R_390_12];
184 case BFD_RELOC_16:
185 return &elf_howto_table[(int) R_390_16];
186 case BFD_RELOC_32:
187 return &elf_howto_table[(int) R_390_32];
188 case BFD_RELOC_CTOR:
189 return &elf_howto_table[(int) R_390_32];
190 case BFD_RELOC_32_PCREL:
191 return &elf_howto_table[(int) R_390_PC32];
192 case BFD_RELOC_390_GOT12:
193 return &elf_howto_table[(int) R_390_GOT12];
194 case BFD_RELOC_32_GOT_PCREL:
195 return &elf_howto_table[(int) R_390_GOT32];
196 case BFD_RELOC_390_PLT32:
197 return &elf_howto_table[(int) R_390_PLT32];
198 case BFD_RELOC_390_COPY:
199 return &elf_howto_table[(int) R_390_COPY];
200 case BFD_RELOC_390_GLOB_DAT:
201 return &elf_howto_table[(int) R_390_GLOB_DAT];
202 case BFD_RELOC_390_JMP_SLOT:
203 return &elf_howto_table[(int) R_390_JMP_SLOT];
204 case BFD_RELOC_390_RELATIVE:
205 return &elf_howto_table[(int) R_390_RELATIVE];
206 case BFD_RELOC_32_GOTOFF:
5236c819 207 return &elf_howto_table[(int) R_390_GOTOFF32];
0451c93c
MS
208 case BFD_RELOC_390_GOTPC:
209 return &elf_howto_table[(int) R_390_GOTPC];
210 case BFD_RELOC_390_GOT16:
211 return &elf_howto_table[(int) R_390_GOT16];
212 case BFD_RELOC_16_PCREL:
213 return &elf_howto_table[(int) R_390_PC16];
214 case BFD_RELOC_390_PC16DBL:
215 return &elf_howto_table[(int) R_390_PC16DBL];
216 case BFD_RELOC_390_PLT16DBL:
217 return &elf_howto_table[(int) R_390_PLT16DBL];
befc3abb
MS
218 case BFD_RELOC_390_PC32DBL:
219 return &elf_howto_table[(int) R_390_PC32DBL];
220 case BFD_RELOC_390_PLT32DBL:
221 return &elf_howto_table[(int) R_390_PLT32DBL];
222 case BFD_RELOC_390_GOTPCDBL:
223 return &elf_howto_table[(int) R_390_GOTPCDBL];
224 case BFD_RELOC_390_GOTENT:
225 return &elf_howto_table[(int) R_390_GOTENT];
5236c819
MS
226 case BFD_RELOC_16_GOTOFF:
227 return &elf_howto_table[(int) R_390_GOTOFF16];
228 case BFD_RELOC_390_GOTPLT12:
229 return &elf_howto_table[(int) R_390_GOTPLT12];
230 case BFD_RELOC_390_GOTPLT16:
231 return &elf_howto_table[(int) R_390_GOTPLT16];
232 case BFD_RELOC_390_GOTPLT32:
233 return &elf_howto_table[(int) R_390_GOTPLT32];
234 case BFD_RELOC_390_GOTPLTENT:
235 return &elf_howto_table[(int) R_390_GOTPLTENT];
236 case BFD_RELOC_390_PLTOFF16:
237 return &elf_howto_table[(int) R_390_PLTOFF16];
238 case BFD_RELOC_390_PLTOFF32:
239 return &elf_howto_table[(int) R_390_PLTOFF32];
69fc87f1
MS
240 case BFD_RELOC_390_TLS_LOAD:
241 return &elf_howto_table[(int) R_390_TLS_LOAD];
242 case BFD_RELOC_390_TLS_GDCALL:
243 return &elf_howto_table[(int) R_390_TLS_GDCALL];
244 case BFD_RELOC_390_TLS_LDCALL:
245 return &elf_howto_table[(int) R_390_TLS_LDCALL];
246 case BFD_RELOC_390_TLS_GD32:
247 return &elf_howto_table[(int) R_390_TLS_GD32];
248 case BFD_RELOC_390_TLS_GOTIE12:
249 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
250 case BFD_RELOC_390_TLS_GOTIE32:
251 return &elf_howto_table[(int) R_390_TLS_GOTIE32];
252 case BFD_RELOC_390_TLS_LDM32:
253 return &elf_howto_table[(int) R_390_TLS_LDM32];
254 case BFD_RELOC_390_TLS_IE32:
255 return &elf_howto_table[(int) R_390_TLS_IE32];
256 case BFD_RELOC_390_TLS_IEENT:
257 return &elf_howto_table[(int) R_390_TLS_IEENT];
258 case BFD_RELOC_390_TLS_LE32:
259 return &elf_howto_table[(int) R_390_TLS_LE32];
260 case BFD_RELOC_390_TLS_LDO32:
261 return &elf_howto_table[(int) R_390_TLS_LDO32];
262 case BFD_RELOC_390_TLS_DTPMOD:
263 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
264 case BFD_RELOC_390_TLS_DTPOFF:
265 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
266 case BFD_RELOC_390_TLS_TPOFF:
267 return &elf_howto_table[(int) R_390_TLS_TPOFF];
bd1ea41b
MS
268 case BFD_RELOC_390_20:
269 return &elf_howto_table[(int) R_390_20];
270 case BFD_RELOC_390_GOT20:
271 return &elf_howto_table[(int) R_390_GOT20];
272 case BFD_RELOC_390_GOTPLT20:
273 return &elf_howto_table[(int) R_390_GOTPLT20];
274 case BFD_RELOC_390_TLS_GOTIE20:
275 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
470b557a
AK
276 case BFD_RELOC_390_IRELATIVE:
277 return &elf_howto_table[(int) R_390_IRELATIVE];
0451c93c
MS
278 case BFD_RELOC_VTABLE_INHERIT:
279 return &elf32_s390_vtinherit_howto;
280 case BFD_RELOC_VTABLE_ENTRY:
281 return &elf32_s390_vtentry_howto;
282 default:
283 break;
284 }
a85d7ed0
NC
285 return 0;
286}
287
157090f7
AM
288static reloc_howto_type *
289elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
290 const char *r_name)
291{
292 unsigned int i;
293
294 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
295 if (elf_howto_table[i].name != NULL
296 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
297 return &elf_howto_table[i];
298
299 if (strcasecmp (elf32_s390_vtinherit_howto.name, r_name) == 0)
300 return &elf32_s390_vtinherit_howto;
301 if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0)
302 return &elf32_s390_vtentry_howto;
303
304 return NULL;
305}
306
a85d7ed0
NC
307/* We need to use ELF32_R_TYPE so we have our own copy of this function,
308 and elf32-s390.c has its own copy. */
309
310static void
2c3fc389
NC
311elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
312 arelent *cache_ptr,
313 Elf_Internal_Rela *dst)
a85d7ed0 314{
d0fb9a8d
JJ
315 unsigned int r_type = ELF32_R_TYPE(dst->r_info);
316 switch (r_type)
a85d7ed0
NC
317 {
318 case R_390_GNU_VTINHERIT:
319 cache_ptr->howto = &elf32_s390_vtinherit_howto;
320 break;
321
322 case R_390_GNU_VTENTRY:
323 cache_ptr->howto = &elf32_s390_vtentry_howto;
324 break;
325
326 default:
d0fb9a8d
JJ
327 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
328 {
329 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
330 abfd, (int) r_type);
331 r_type = R_390_NONE;
332 }
333 cache_ptr->howto = &elf_howto_table[r_type];
dc810e39 334 }
a85d7ed0
NC
335}
336
69fc87f1
MS
337/* A relocation function which doesn't do anything. */
338static bfd_reloc_status_type
2c3fc389
NC
339s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
340 arelent *reloc_entry,
341 asymbol *symbol ATTRIBUTE_UNUSED,
342 void * data ATTRIBUTE_UNUSED,
343 asection *input_section,
344 bfd *output_bfd,
345 char **error_message ATTRIBUTE_UNUSED)
69fc87f1
MS
346{
347 if (output_bfd)
348 reloc_entry->address += input_section->output_offset;
349 return bfd_reloc_ok;
350}
351
bd1ea41b
MS
352/* Handle the large displacement relocs. */
353static bfd_reloc_status_type
2c3fc389
NC
354s390_elf_ldisp_reloc (bfd *abfd ATTRIBUTE_UNUSED,
355 arelent *reloc_entry,
356 asymbol *symbol,
357 void * data ATTRIBUTE_UNUSED,
358 asection *input_section,
359 bfd *output_bfd,
360 char **error_message ATTRIBUTE_UNUSED)
bd1ea41b
MS
361{
362 reloc_howto_type *howto = reloc_entry->howto;
363 bfd_vma relocation;
364 bfd_vma insn;
68ffbac6 365
bd1ea41b
MS
366 if (output_bfd != (bfd *) NULL
367 && (symbol->flags & BSF_SECTION_SYM) == 0
368 && (! howto->partial_inplace
369 || reloc_entry->addend == 0))
370 {
371 reloc_entry->address += input_section->output_offset;
372 return bfd_reloc_ok;
373 }
68ffbac6 374
bd1ea41b
MS
375 if (output_bfd != NULL)
376 return bfd_reloc_continue;
68ffbac6 377
07515404 378 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b 379 return bfd_reloc_outofrange;
68ffbac6 380
bd1ea41b
MS
381 relocation = (symbol->value
382 + symbol->section->output_section->vma
383 + symbol->section->output_offset);
384 relocation += reloc_entry->addend;
385 if (howto->pc_relative)
386 {
387 relocation -= (input_section->output_section->vma
388 + input_section->output_offset);
389 relocation -= reloc_entry->address;
390 }
68ffbac6 391
bd1ea41b
MS
392 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
393 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
394 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
68ffbac6 395
bd1ea41b
MS
396 if ((bfd_signed_vma) relocation < - 0x80000
397 || (bfd_signed_vma) relocation > 0x7ffff)
398 return bfd_reloc_overflow;
399 else
400 return bfd_reloc_ok;
401}
402
b34976b6 403static bfd_boolean
2c3fc389 404elf_s390_is_local_label_name (bfd *abfd, const char *name)
a85d7ed0
NC
405{
406 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 407 return TRUE;
a85d7ed0
NC
408
409 return _bfd_elf_is_local_label_name (abfd, name);
410}
411
412/* Functions for the 390 ELF linker. */
413
414/* The name of the dynamic interpreter. This is put in the .interp
415 section. */
416
87049b0d 417#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
a85d7ed0 418
64285810
MS
419/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
420 copying dynamic variables from a shared lib into an app's dynbss
421 section, and instead use a dynamic relocation to point into the
422 shared lib. */
423#define ELIMINATE_COPY_RELOCS 1
424
a85d7ed0
NC
425/* The size in bytes of the first entry in the procedure linkage table. */
426#define PLT_FIRST_ENTRY_SIZE 32
427/* The size in bytes of an entry in the procedure linkage table. */
dc810e39 428#define PLT_ENTRY_SIZE 32
a85d7ed0
NC
429
430#define GOT_ENTRY_SIZE 4
431
470b557a
AK
432#define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela)
433
a85d7ed0
NC
434/* The first three entries in a procedure linkage table are reserved,
435 and the initial contents are unimportant (we zero them out).
436 Subsequent entries look like this. See the SVR4 ABI 386
437 supplement to see how this works. */
438
439/* For the s390, simple addr offset can only be 0 - 4096.
440 To use the full 2 GB address space, several instructions
441 are needed to load an address in a register and execute
442 a branch( or just saving the address)
443
dc810e39 444 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC
445
446/* The first 3 words in the GOT are then reserved.
447 Word 0 is the address of the dynamic table.
448 Word 1 is a pointer to a structure describing the object
449 Word 2 is used to point to the loader entry address.
450
4cc11e76 451 The code for position independent PLT entries looks like this:
a85d7ed0
NC
452
453 r12 holds addr of the current GOT at entry to the PLT
454
455 The GOT holds the address in the PLT to be executed.
456 The loader then gets:
457 24(15) = Pointer to the structure describing the object.
a7e28bbe 458 28(15) = Offset into rela.plt
a85d7ed0
NC
459
460 The loader must then find the module where the function is
461 and insert the address in the GOT.
462
463 Note: 390 can only address +- 64 K relative.
464 We check if offset > 65536, then make a relative branch -64xxx
465 back to a previous defined branch
466
467PLT1: BASR 1,0 # 2 bytes
468 L 1,22(1) # 4 bytes Load offset in GOT in r 1
469 L 1,(1,12) # 4 bytes Load address from GOT in r1
470 BCR 15,1 # 2 bytes Jump to address
471RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
472 L 1,14(1) # 4 bytes Load offset in symol table in r1
473 BRC 15,-x # 4 bytes Jump to start of PLT
474 .word 0 # 2 bytes filler
475 .long ? # 4 bytes offset in GOT
a7e28bbe 476 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC
477
478 This was the general case. There are two additional, optimizes PLT
479 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
480 First the one for GOT offsets < 4096:
481
482PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
483 BCR 15,1 # 2 bytes Jump to address
484 .word 0,0,0 # 6 bytes filler
485RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
a7e28bbe 486 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
a85d7ed0
NC
487 BRC 15,-x # 4 bytes Jump to start of PLT
488 .word 0,0,0 # 6 bytes filler
a7e28bbe 489 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC
490
491 Second the one for GOT offsets < 32768:
492
493PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
494 L 1,(1,12) # 4 bytes Load address from GOT to r1
495 BCR 15,1 # 2 bytes Jump to address
496 .word 0 # 2 bytes filler
497RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
a7e28bbe 498 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
a85d7ed0
NC
499 BRC 15,-x # 4 bytes Jump to start of PLT
500 .word 0,0,0 # 6 bytes filler
a7e28bbe 501 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC
502
503Total = 32 bytes per PLT entry
504
505 The code for static build PLT entries looks like this:
506
507PLT1: BASR 1,0 # 2 bytes
508 L 1,22(1) # 4 bytes Load address of GOT entry
509 L 1,0(0,1) # 4 bytes Load address from GOT in r1
510 BCR 15,1 # 2 bytes Jump to address
511RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
512 L 1,14(1) # 4 bytes Load offset in symbol table in r1
513 BRC 15,-x # 4 bytes Jump to start of PLT
514 .word 0 # 2 bytes filler
515 .long ? # 4 bytes address of GOT entry
a7e28bbe 516 .long ? # 4 bytes offset into rela.plt */
a85d7ed0 517
9aa17453
AK
518static const bfd_byte elf_s390_plt_entry[PLT_ENTRY_SIZE] =
519 {
520 0x0d, 0x10, /* basr %r1,%r0 */
521 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
522 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */
523 0x07, 0xf1, /* br %r1 */
524 0x0d, 0x10, /* basr %r1,%r0 */
525 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
526 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
527 0x00, 0x00, /* padding */
528 0x00, 0x00, 0x00, 0x00, /* GOT offset */
529 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
530 };
531
532/* Generic PLT pic entry. */
533static const bfd_byte elf_s390_plt_pic_entry[PLT_ENTRY_SIZE] =
534 {
535 0x0d, 0x10, /* basr %r1,%r0 */
536 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
537 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
538 0x07, 0xf1, /* br %r1 */
539 0x0d, 0x10, /* basr %r1,%r0 */
540 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
541 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
542 0x00, 0x00, /* padding */
543 0x00, 0x00, 0x00, 0x00, /* GOT offset */
544 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
545 };
546
547/* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced
548 when generating the PLT slot with the GOT offset. */
549static const bfd_byte elf_s390_plt_pic12_entry[PLT_ENTRY_SIZE] =
550 {
551 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */
552 0x07, 0xf1, /* br %r1 */
553 0x00, 0x00, 0x00, 0x00, /* padding */
554 0x00, 0x00,
555 0x0d, 0x10, /* basr %r1,%r0 */
556 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
557 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
558 0x00, 0x00, 0x00, 0x00,
559 0x00, 0x00, 0x00, 0x00
560 };
561
562/* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced
563 when generating the PLT slot with the GOT offset. */
564static const bfd_byte elf_s390_plt_pic16_entry[PLT_ENTRY_SIZE] =
565 {
566 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */
567 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
568 0x07, 0xf1, /* br %r1 */
569 0x00, 0x00,
570 0x0d, 0x10, /* basr %r1,%r0 */
571 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
572 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
573 0x00, 0x00, 0x00, 0x00,
574 0x00, 0x00, 0x00, 0x00,
575 0x00, 0x00
576 };
a85d7ed0 577
a7e28bbe 578/* The first PLT entry pushes the offset into the rela.plt
a85d7ed0
NC
579 from R1 onto the stack at 8(15) and the loader object info
580 at 12(15), loads the loader address in R1 and jumps to it. */
581
582/* The first entry in the PLT for PIC code:
583
584PLT0:
a7e28bbe 585 ST 1,28(15) # R1 has offset into rela.plt
a85d7ed0 586 L 1,4(12) # Get loader ino(object struct address)
dc810e39 587 ST 1,24(15) # Store address
a85d7ed0
NC
588 L 1,8(12) # Entry address of loader in R1
589 BR 1 # Jump to loader
590
591 The first entry in the PLT for static code:
592
593PLT0:
a7e28bbe 594 ST 1,28(15) # R1 has offset into rela.plt
a85d7ed0
NC
595 BASR 1,0
596 L 1,18(0,1) # Get address of GOT
597 MVC 24(4,15),4(1) # Move loader ino to stack
598 L 1,8(1) # Get address of loader
599 BR 1 # Jump to loader
600 .word 0 # filler
601 .long got # address of GOT */
602
9aa17453
AK
603static const bfd_byte elf_s390_plt_first_entry[PLT_FIRST_ENTRY_SIZE] =
604 {
605 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
606 0x0d, 0x10, /* basr %r1,%r0 */
607 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */
608 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */
609 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */
610 0x07, 0xf1, /* br %r1 */
611 0x00, 0x00, 0x00, 0x00,
612 0x00, 0x00, 0x00, 0x00,
613 0x00, 0x00
614 };
615
616static const bfd_byte elf_s390_plt_pic_first_entry[PLT_FIRST_ENTRY_SIZE] =
617 {
618 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
619 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */
620 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */
621 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */
622 0x07, 0xf1, /* br %r1 */
623 0x00, 0x00, 0x00, 0x00,
624 0x00, 0x00, 0x00, 0x00,
625 0x00, 0x00, 0x00, 0x00,
626 0x00, 0x00
627 };
a85d7ed0 628
a85d7ed0
NC
629
630/* s390 ELF linker hash entry. */
631
632struct elf_s390_link_hash_entry
633{
0451c93c 634 struct elf_link_hash_entry elf;
a85d7ed0 635
0451c93c 636 /* Track dynamic relocs copied for this symbol. */
00d8c7a9 637 struct elf_dyn_relocs *dyn_relocs;
5236c819
MS
638
639 /* Number of GOTPLT references for a function. */
640 bfd_signed_vma gotplt_refcount;
69fc87f1
MS
641
642#define GOT_UNKNOWN 0
643#define GOT_NORMAL 1
644#define GOT_TLS_GD 2
645#define GOT_TLS_IE 3
646#define GOT_TLS_IE_NLT 4
647 unsigned char tls_type;
470b557a
AK
648
649 /* For pointer equality reasons we might need to change the symbol
650 type from STT_GNU_IFUNC to STT_FUNC together with its value and
651 section entry. So after alloc_dynrelocs only these values should
652 be used. In order to check whether a symbol is IFUNC use
653 s390_is_ifunc_symbol_p. */
654 bfd_vma ifunc_resolver_address;
655 asection *ifunc_resolver_section;
a85d7ed0
NC
656};
657
69fc87f1
MS
658#define elf_s390_hash_entry(ent) \
659 ((struct elf_s390_link_hash_entry *)(ent))
660
470b557a
AK
661/* This structure represents an entry in the local PLT list needed for
662 local IFUNC symbols. */
663struct plt_entry
664{
665 /* The section of the local symbol.
666 Set in relocate_section and used in finish_dynamic_sections. */
667 asection *sec;
668
669 union
670 {
671 bfd_signed_vma refcount;
672 bfd_vma offset;
673 } plt;
674};
675
0ffa91dd
NC
676/* NOTE: Keep this structure in sync with
677 the one declared in elf64-s390.c. */
69fc87f1
MS
678struct elf_s390_obj_tdata
679{
680 struct elf_obj_tdata root;
681
470b557a
AK
682 /* A local PLT is needed for ifunc symbols. */
683 struct plt_entry *local_plt;
684
0ffa91dd 685 /* TLS type for each local got entry. */
69fc87f1
MS
686 char *local_got_tls_type;
687};
688
689#define elf_s390_tdata(abfd) \
690 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
691
470b557a
AK
692#define elf_s390_local_plt(abfd) \
693 (elf_s390_tdata (abfd)->local_plt)
694
69fc87f1
MS
695#define elf_s390_local_got_tls_type(abfd) \
696 (elf_s390_tdata (abfd)->local_got_tls_type)
697
0ffa91dd
NC
698#define is_s390_elf(bfd) \
699 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
700 && elf_tdata (bfd) != NULL \
4dfe6ac6 701 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 702
69fc87f1 703static bfd_boolean
62d7a5f6 704elf_s390_mkobject (bfd *abfd)
69fc87f1 705{
0ffa91dd 706 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 707 S390_ELF_DATA);
69fc87f1
MS
708}
709
710static bfd_boolean
2c3fc389 711elf_s390_object_p (bfd *abfd)
69fc87f1 712{
69fc87f1
MS
713 /* Set the right machine number for an s390 elf32 file. */
714 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
715}
716
a85d7ed0
NC
717/* s390 ELF linker hash table. */
718
719struct elf_s390_link_hash_table
720{
0451c93c 721 struct elf_link_hash_table elf;
a85d7ed0 722
0451c93c 723 /* Short-cuts to get to dynamic linker sections. */
0451c93c
MS
724 asection *sdynbss;
725 asection *srelbss;
470b557a 726 asection *irelifunc;
ec338859 727
2c3fc389
NC
728 union
729 {
69fc87f1
MS
730 bfd_signed_vma refcount;
731 bfd_vma offset;
732 } tls_ldm_got;
733
87d72d41
AM
734 /* Small local sym cache. */
735 struct sym_cache sym_cache;
0451c93c 736};
a85d7ed0
NC
737
738/* Get the s390 ELF linker hash table from a link_info structure. */
739
740#define elf_s390_hash_table(p) \
4dfe6ac6
NC
741 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
742 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
a85d7ed0 743
470b557a
AK
744#undef ELF64
745#include "elf-s390-common.c"
746
a85d7ed0
NC
747/* Create an entry in an s390 ELF linker hash table. */
748
749static struct bfd_hash_entry *
2c3fc389
NC
750link_hash_newfunc (struct bfd_hash_entry *entry,
751 struct bfd_hash_table *table,
752 const char *string)
a85d7ed0 753{
a85d7ed0
NC
754 /* Allocate the structure if it has not already been allocated by a
755 subclass. */
0451c93c
MS
756 if (entry == NULL)
757 {
758 entry = bfd_hash_allocate (table,
759 sizeof (struct elf_s390_link_hash_entry));
760 if (entry == NULL)
761 return entry;
762 }
ec338859 763
a85d7ed0 764 /* Call the allocation method of the superclass. */
0451c93c
MS
765 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
766 if (entry != NULL)
a85d7ed0 767 {
0451c93c 768 struct elf_s390_link_hash_entry *eh;
ec338859 769
0451c93c
MS
770 eh = (struct elf_s390_link_hash_entry *) entry;
771 eh->dyn_relocs = NULL;
5236c819 772 eh->gotplt_refcount = 0;
69fc87f1 773 eh->tls_type = GOT_UNKNOWN;
470b557a
AK
774 eh->ifunc_resolver_address = 0;
775 eh->ifunc_resolver_section = NULL;
a85d7ed0
NC
776 }
777
0451c93c 778 return entry;
a85d7ed0
NC
779}
780
781/* Create an s390 ELF linker hash table. */
782
783static struct bfd_link_hash_table *
2c3fc389 784elf_s390_link_hash_table_create (bfd *abfd)
a85d7ed0
NC
785{
786 struct elf_s390_link_hash_table *ret;
dc810e39 787 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
a85d7ed0 788
7bf52ea2 789 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
0451c93c 790 if (ret == NULL)
a85d7ed0
NC
791 return NULL;
792
66eb6687 793 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC
794 sizeof (struct elf_s390_link_hash_entry),
795 S390_ELF_DATA))
a85d7ed0 796 {
e2d34d7d 797 free (ret);
a85d7ed0
NC
798 return NULL;
799 }
800
0451c93c
MS
801 return &ret->elf.root;
802}
803
804/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
805 shortcuts to them in our hash table. */
806
b34976b6 807static bfd_boolean
2c3fc389 808create_got_section (bfd *dynobj, struct bfd_link_info *info)
0451c93c
MS
809{
810 struct elf_s390_link_hash_table *htab;
811
812 if (! _bfd_elf_create_got_section (dynobj, info))
b34976b6 813 return FALSE;
0451c93c
MS
814
815 htab = elf_s390_hash_table (info);
3d4d4302
AM
816 htab->elf.sgot = bfd_get_linker_section (dynobj, ".got");
817 htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
818 htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got");
f41345a7 819 if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot)
0451c93c
MS
820 abort ();
821
b34976b6 822 return TRUE;
0451c93c
MS
823}
824
825/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
826 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
827 hash table. */
828
b34976b6 829static bfd_boolean
2c3fc389 830elf_s390_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
0451c93c
MS
831{
832 struct elf_s390_link_hash_table *htab;
833
834 htab = elf_s390_hash_table (info);
f41345a7 835 if (!htab->elf.sgot && !create_got_section (dynobj, info))
b34976b6 836 return FALSE;
0451c93c
MS
837
838 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 839 return FALSE;
0451c93c 840
3d4d4302
AM
841 htab->elf.splt = bfd_get_linker_section (dynobj, ".plt");
842 htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt");
843 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
0451c93c 844 if (!info->shared)
3d4d4302 845 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
0451c93c 846
f41345a7 847 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
0451c93c
MS
848 || (!info->shared && !htab->srelbss))
849 abort ();
850
b34976b6 851 return TRUE;
a85d7ed0
NC
852}
853
0451c93c
MS
854/* Copy the extra info we tack onto an elf_link_hash_entry. */
855
856static void
2c3fc389
NC
857elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
858 struct elf_link_hash_entry *dir,
859 struct elf_link_hash_entry *ind)
0451c93c
MS
860{
861 struct elf_s390_link_hash_entry *edir, *eind;
862
863 edir = (struct elf_s390_link_hash_entry *) dir;
864 eind = (struct elf_s390_link_hash_entry *) ind;
865
866 if (eind->dyn_relocs != NULL)
867 {
868 if (edir->dyn_relocs != NULL)
869 {
00d8c7a9
AK
870 struct elf_dyn_relocs **pp;
871 struct elf_dyn_relocs *p;
0451c93c 872
fcfa13d2 873 /* Add reloc counts against the indirect sym to the direct sym
0451c93c
MS
874 list. Merge any entries against the same section. */
875 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
876 {
00d8c7a9 877 struct elf_dyn_relocs *q;
0451c93c
MS
878
879 for (q = edir->dyn_relocs; q != NULL; q = q->next)
880 if (q->sec == p->sec)
881 {
882 q->pc_count += p->pc_count;
883 q->count += p->count;
884 *pp = p->next;
885 break;
886 }
887 if (q == NULL)
888 pp = &p->next;
889 }
890 *pp = edir->dyn_relocs;
891 }
892
893 edir->dyn_relocs = eind->dyn_relocs;
894 eind->dyn_relocs = NULL;
895 }
896
69fc87f1
MS
897 if (ind->root.type == bfd_link_hash_indirect
898 && dir->got.refcount <= 0)
899 {
900 edir->tls_type = eind->tls_type;
901 eind->tls_type = GOT_UNKNOWN;
902 }
903
64285810
MS
904 if (ELIMINATE_COPY_RELOCS
905 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM
906 && dir->dynamic_adjusted)
907 {
908 /* If called to transfer flags for a weakdef during processing
909 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
910 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
911 dir->ref_dynamic |= ind->ref_dynamic;
912 dir->ref_regular |= ind->ref_regular;
913 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
914 dir->needs_plt |= ind->needs_plt;
915 }
64285810 916 else
fcfa13d2 917 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 918}
a85d7ed0 919
69fc87f1 920static int
2c3fc389
NC
921elf_s390_tls_transition (struct bfd_link_info *info,
922 int r_type,
923 int is_local)
69fc87f1
MS
924{
925 if (info->shared)
926 return r_type;
927
928 switch (r_type)
929 {
930 case R_390_TLS_GD32:
931 case R_390_TLS_IE32:
932 if (is_local)
933 return R_390_TLS_LE32;
934 return R_390_TLS_IE32;
935 case R_390_TLS_GOTIE32:
936 if (is_local)
937 return R_390_TLS_LE32;
938 return R_390_TLS_GOTIE32;
939 case R_390_TLS_LDM32:
940 return R_390_TLS_LE32;
941 }
942
943 return r_type;
944}
945
a85d7ed0
NC
946/* Look through the relocs for a section during the first phase, and
947 allocate space in the global offset table or procedure linkage
948 table. */
949
b34976b6 950static bfd_boolean
2c3fc389
NC
951elf_s390_check_relocs (bfd *abfd,
952 struct bfd_link_info *info,
953 asection *sec,
954 const Elf_Internal_Rela *relocs)
a85d7ed0 955{
0451c93c 956 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC
957 Elf_Internal_Shdr *symtab_hdr;
958 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC
959 const Elf_Internal_Rela *rel;
960 const Elf_Internal_Rela *rel_end;
a85d7ed0 961 asection *sreloc;
5236c819 962 bfd_signed_vma *local_got_refcounts;
69fc87f1 963 int tls_type, old_tls_type;
470b557a 964 Elf_Internal_Sym *isym;
a85d7ed0 965
1049f94e 966 if (info->relocatable)
b34976b6 967 return TRUE;
a85d7ed0 968
0ffa91dd
NC
969 BFD_ASSERT (is_s390_elf (abfd));
970
0451c93c 971 htab = elf_s390_hash_table (info);
0ffa91dd 972 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 973 sym_hashes = elf_sym_hashes (abfd);
5236c819 974 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 975
a85d7ed0
NC
976 sreloc = NULL;
977
978 rel_end = relocs + sec->reloc_count;
979 for (rel = relocs; rel < rel_end; rel++)
980 {
69fc87f1 981 unsigned int r_type;
a85d7ed0
NC
982 unsigned long r_symndx;
983 struct elf_link_hash_entry *h;
984
985 r_symndx = ELF32_R_SYM (rel->r_info);
986
0451c93c
MS
987 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
988 {
d003868e
AM
989 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
990 abfd, r_symndx);
b34976b6 991 return FALSE;
0451c93c
MS
992 }
993
a85d7ed0 994 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK
995 {
996 /* A local symbol. */
997 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
998 abfd, r_symndx);
999 if (isym == NULL)
1000 return FALSE;
1001
1002 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1003 {
1004 struct plt_entry *plt;
1005
0cb79d69
AK
1006 if (htab->elf.dynobj == NULL)
1007 htab->elf.dynobj = abfd;
1008
470b557a
AK
1009 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1010 return FALSE;
1011
1012 if (local_got_refcounts == NULL)
1013 {
1014 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
1015 return FALSE;
1016 local_got_refcounts = elf_local_got_refcounts (abfd);
1017 }
1018 plt = elf_s390_local_plt (abfd);
1019 plt[r_symndx].plt.refcount++;
1020 }
1021 h = NULL;
1022 }
a85d7ed0 1023 else
973a3492
L
1024 {
1025 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1026 while (h->root.type == bfd_link_hash_indirect
1027 || h->root.type == bfd_link_hash_warning)
1028 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1029 }
a85d7ed0 1030
5236c819
MS
1031 /* Create got section and local_got_refcounts array if they
1032 are needed. */
69fc87f1
MS
1033 r_type = elf_s390_tls_transition (info,
1034 ELF32_R_TYPE (rel->r_info),
1035 h == NULL);
1036 switch (r_type)
a85d7ed0
NC
1037 {
1038 case R_390_GOT12:
5236c819 1039 case R_390_GOT16:
bd1ea41b 1040 case R_390_GOT20:
a85d7ed0 1041 case R_390_GOT32:
befc3abb 1042 case R_390_GOTENT:
5236c819
MS
1043 case R_390_GOTPLT12:
1044 case R_390_GOTPLT16:
bd1ea41b 1045 case R_390_GOTPLT20:
5236c819
MS
1046 case R_390_GOTPLT32:
1047 case R_390_GOTPLTENT:
69fc87f1
MS
1048 case R_390_TLS_GD32:
1049 case R_390_TLS_GOTIE12:
bd1ea41b 1050 case R_390_TLS_GOTIE20:
69fc87f1
MS
1051 case R_390_TLS_GOTIE32:
1052 case R_390_TLS_IEENT:
1053 case R_390_TLS_IE32:
1054 case R_390_TLS_LDM32:
5236c819
MS
1055 if (h == NULL
1056 && local_got_refcounts == NULL)
a85d7ed0 1057 {
470b557a 1058 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 1059 return FALSE;
470b557a 1060 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 1061 }
5236c819
MS
1062 /* Fall through. */
1063 case R_390_GOTOFF16:
1064 case R_390_GOTOFF32:
0451c93c 1065 case R_390_GOTPC:
befc3abb 1066 case R_390_GOTPCDBL:
f41345a7 1067 if (htab->elf.sgot == NULL)
0451c93c
MS
1068 {
1069 if (htab->elf.dynobj == NULL)
1070 htab->elf.dynobj = abfd;
1071 if (!create_got_section (htab->elf.dynobj, info))
b34976b6 1072 return FALSE;
0451c93c 1073 }
5236c819
MS
1074 }
1075
470b557a
AK
1076 if (h != NULL)
1077 {
1078 if (htab->elf.dynobj == NULL)
1079 htab->elf.dynobj = abfd;
1080 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1081 return FALSE;
1082
1083 /* Make sure an IFUNC symbol defined in a non-shared object
1084 always gets a PLT slot. */
1085 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1086 {
1087 /* The symbol is called by the dynamic loader in order
1088 to resolve the relocation. So it is in fact also
1089 referenced. */
1090 h->ref_regular = 1;
1091 h->needs_plt = 1;
1092 }
1093 }
69fc87f1 1094 switch (r_type)
5236c819 1095 {
5236c819
MS
1096 case R_390_GOTOFF16:
1097 case R_390_GOTOFF32:
1098 case R_390_GOTPC:
1099 case R_390_GOTPCDBL:
470b557a
AK
1100 /* These relocs do not need a GOT slot. They just load the
1101 GOT pointer itself or address something else relative to
1102 the GOT. Since the GOT pointer has been set up above we
1103 are done. */
a85d7ed0
NC
1104 break;
1105
26e41594
AM
1106 case R_390_PLT16DBL:
1107 case R_390_PLT32DBL:
a85d7ed0 1108 case R_390_PLT32:
5236c819
MS
1109 case R_390_PLTOFF16:
1110 case R_390_PLTOFF32:
a85d7ed0 1111 /* This symbol requires a procedure linkage table entry. We
26e41594
AM
1112 actually build the entry in adjust_dynamic_symbol,
1113 because this might be a case of linking PIC code which is
1114 never referenced by a dynamic object, in which case we
1115 don't need to generate a procedure linkage table entry
1116 after all. */
a85d7ed0
NC
1117
1118 /* If this is a local symbol, we resolve it directly without
26e41594 1119 creating a procedure linkage table entry. */
5236c819
MS
1120 if (h != NULL)
1121 {
f5385ebf 1122 h->needs_plt = 1;
5236c819
MS
1123 h->plt.refcount += 1;
1124 }
1125 break;
a85d7ed0 1126
5236c819
MS
1127 case R_390_GOTPLT12:
1128 case R_390_GOTPLT16:
bd1ea41b 1129 case R_390_GOTPLT20:
5236c819
MS
1130 case R_390_GOTPLT32:
1131 case R_390_GOTPLTENT:
1132 /* This symbol requires either a procedure linkage table entry
1133 or an entry in the local got. We actually build the entry
1134 in adjust_dynamic_symbol because whether this is really a
1135 global reference can change and with it the fact if we have
1136 to create a plt entry or a local got entry. To be able to
1137 make a once global symbol a local one we have to keep track
1138 of the number of gotplt references that exist for this
1139 symbol. */
1140 if (h != NULL)
1141 {
1142 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1143 h->needs_plt = 1;
5236c819
MS
1144 h->plt.refcount += 1;
1145 }
1146 else
1147 local_got_refcounts[r_symndx] += 1;
a85d7ed0
NC
1148 break;
1149
69fc87f1
MS
1150 case R_390_TLS_LDM32:
1151 htab->tls_ldm_got.refcount += 1;
1152 break;
1153
1154 case R_390_TLS_IE32:
1155 case R_390_TLS_GOTIE12:
bd1ea41b 1156 case R_390_TLS_GOTIE20:
69fc87f1
MS
1157 case R_390_TLS_GOTIE32:
1158 case R_390_TLS_IEENT:
1159 if (info->shared)
1160 info->flags |= DF_STATIC_TLS;
ae9a127f 1161 /* Fall through. */
69fc87f1
MS
1162
1163 case R_390_GOT12:
26e41594 1164 case R_390_GOT16:
bd1ea41b 1165 case R_390_GOT20:
69fc87f1
MS
1166 case R_390_GOT32:
1167 case R_390_GOTENT:
1168 case R_390_TLS_GD32:
1169 /* This symbol requires a global offset table entry. */
1170 switch (r_type)
1171 {
1172 default:
1173 case R_390_GOT12:
1174 case R_390_GOT16:
bd1ea41b 1175 case R_390_GOT20:
69fc87f1
MS
1176 case R_390_GOT32:
1177 case R_390_GOTENT:
1178 tls_type = GOT_NORMAL;
1179 break;
1180 case R_390_TLS_GD32:
1181 tls_type = GOT_TLS_GD;
1182 break;
1183 case R_390_TLS_IE32:
1184 case R_390_TLS_GOTIE32:
1185 tls_type = GOT_TLS_IE;
1186 break;
1187 case R_390_TLS_GOTIE12:
bd1ea41b 1188 case R_390_TLS_GOTIE20:
69fc87f1
MS
1189 case R_390_TLS_IEENT:
1190 tls_type = GOT_TLS_IE_NLT;
1191 break;
1192 }
1193
1194 if (h != NULL)
1195 {
1196 h->got.refcount += 1;
1197 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1198 }
1199 else
1200 {
1201 local_got_refcounts[r_symndx] += 1;
1202 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1203 }
1204 /* If a TLS symbol is accessed using IE at least once,
1205 there is no point to use dynamic model for it. */
1206 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1207 {
1208 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1209 {
1210 (*_bfd_error_handler)
d003868e
AM
1211 (_("%B: `%s' accessed both as normal and thread local symbol"),
1212 abfd, h->root.root.string);
69fc87f1
MS
1213 return FALSE;
1214 }
1215 if (old_tls_type > tls_type)
1216 tls_type = old_tls_type;
1217 }
1218
1219 if (old_tls_type != tls_type)
1220 {
1221 if (h != NULL)
1222 elf_s390_hash_entry (h)->tls_type = tls_type;
1223 else
1224 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1225 }
1226
1227 if (r_type != R_390_TLS_IE32)
1228 break;
ae9a127f 1229 /* Fall through. */
69fc87f1
MS
1230
1231 case R_390_TLS_LE32:
1232 if (!info->shared)
1233 break;
1234 info->flags |= DF_STATIC_TLS;
ae9a127f 1235 /* Fall through. */
69fc87f1 1236
26e41594
AM
1237 case R_390_8:
1238 case R_390_16:
a85d7ed0 1239 case R_390_32:
26e41594
AM
1240 case R_390_PC16:
1241 case R_390_PC16DBL:
befc3abb 1242 case R_390_PC32DBL:
a85d7ed0 1243 case R_390_PC32:
470b557a 1244 if (h != NULL)
0451c93c
MS
1245 {
1246 /* If this reloc is in a read-only section, we might
1247 need a copy reloc. We can't check reliably at this
1248 stage whether the section is read-only, as input
1249 sections have not yet been mapped to output sections.
1250 Tentatively set the flag for now, and correct in
1251 adjust_dynamic_symbol. */
f5385ebf 1252 h->non_got_ref = 1;
ec338859 1253
470b557a
AK
1254 if (!info->shared)
1255 {
1256 /* We may need a .plt entry if the function this reloc
1257 refers to is in a shared lib. */
1258 h->plt.refcount += 1;
1259 }
0451c93c 1260 }
a85d7ed0
NC
1261
1262 /* If we are creating a shared library, and this is a reloc
0451c93c
MS
1263 against a global symbol, or a non PC relative reloc
1264 against a local symbol, then we need to copy the reloc
1265 into the shared library. However, if we are linking with
1266 -Bsymbolic, we do not need to copy a reloc against a
1267 global symbol which is defined in an object we are
1268 including in the link (i.e., DEF_REGULAR is set). At
1269 this point we have not seen all the input files, so it is
1270 possible that DEF_REGULAR is not set now but will be set
1271 later (it is never cleared). In case of a weak definition,
1272 DEF_REGULAR may be cleared later by a strong definition in
1273 a shared library. We account for that possibility below by
1274 storing information in the relocs_copied field of the hash
1275 table entry. A similar situation occurs when creating
1276 shared libraries and symbol visibility changes render the
1277 symbol local.
1278
1279 If on the other hand, we are creating an executable, we
1280 may need to keep relocations for symbols satisfied by a
1281 dynamic library if we manage to avoid copy relocs for the
1282 symbol. */
1283 if ((info->shared
1284 && (sec->flags & SEC_ALLOC) != 0
ec338859 1285 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
0451c93c 1286 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
befc3abb 1287 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
0451c93c
MS
1288 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1289 || (h != NULL
8c21ca21 1290 && (! SYMBOLIC_BIND (info, h)
0451c93c 1291 || h->root.type == bfd_link_hash_defweak
f5385ebf 1292 || !h->def_regular))))
64285810
MS
1293 || (ELIMINATE_COPY_RELOCS
1294 && !info->shared
0451c93c
MS
1295 && (sec->flags & SEC_ALLOC) != 0
1296 && h != NULL
1297 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1298 || !h->def_regular)))
a85d7ed0 1299 {
00d8c7a9
AK
1300 struct elf_dyn_relocs *p;
1301 struct elf_dyn_relocs **head;
ec338859 1302
0451c93c
MS
1303 /* We must copy these reloc types into the output file.
1304 Create a reloc section in dynobj and make room for
1305 this reloc. */
a85d7ed0
NC
1306 if (sreloc == NULL)
1307 {
0451c93c
MS
1308 if (htab->elf.dynobj == NULL)
1309 htab->elf.dynobj = abfd;
a85d7ed0 1310
83bac4b0
NC
1311 sreloc = _bfd_elf_make_dynamic_reloc_section
1312 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1313
a85d7ed0 1314 if (sreloc == NULL)
83bac4b0 1315 return FALSE;
a85d7ed0
NC
1316 }
1317
0451c93c
MS
1318 /* If this is a global symbol, we count the number of
1319 relocations we need for this symbol. */
1320 if (h != NULL)
a85d7ed0 1321 {
ec338859 1322 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS
1323 }
1324 else
1325 {
ec338859
AM
1326 /* Track dynamic relocs needed for local syms too.
1327 We really need local syms available to do this
1328 easily. Oh well. */
ec338859 1329 asection *s;
6edfbbad 1330 void *vpp;
ae9a127f 1331
87d72d41
AM
1332 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1333 abfd, r_symndx);
1334 if (isym == NULL)
b34976b6 1335 return FALSE;
ec338859 1336
87d72d41
AM
1337 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1338 if (s == NULL)
1339 s = sec;
1340
6edfbbad 1341 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1342 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM
1343 }
1344
1345 p = *head;
1346 if (p == NULL || p->sec != sec)
1347 {
1348 bfd_size_type amt = sizeof *p;
ae9a127f 1349
00d8c7a9 1350 p = ((struct elf_dyn_relocs *)
ec338859
AM
1351 bfd_alloc (htab->elf.dynobj, amt));
1352 if (p == NULL)
b34976b6 1353 return FALSE;
ec338859
AM
1354 p->next = *head;
1355 *head = p;
1356 p->sec = sec;
1357 p->count = 0;
1358 p->pc_count = 0;
a85d7ed0 1359 }
ec338859
AM
1360
1361 p->count += 1;
1362 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
1363 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
befc3abb 1364 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
ec338859
AM
1365 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1366 p->pc_count += 1;
a85d7ed0 1367 }
a85d7ed0 1368 break;
ec338859 1369
a85d7ed0
NC
1370 /* This relocation describes the C++ object vtable hierarchy.
1371 Reconstruct it for later use during GC. */
26e41594 1372 case R_390_GNU_VTINHERIT:
c152c796 1373 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
26e41594
AM
1374 return FALSE;
1375 break;
ec338859 1376
a85d7ed0
NC
1377 /* This relocation describes which C++ vtable entries are actually
1378 used. Record for later use during GC. */
26e41594 1379 case R_390_GNU_VTENTRY:
d17e0c6e
JB
1380 BFD_ASSERT (h != NULL);
1381 if (h != NULL
1382 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
26e41594
AM
1383 return FALSE;
1384 break;
ec338859 1385
a85d7ed0
NC
1386 default:
1387 break;
1388 }
1389 }
1390
b34976b6 1391 return TRUE;
a85d7ed0
NC
1392}
1393
1394/* Return the section that should be marked against GC for a given
1395 relocation. */
1396
1397static asection *
07adf181
AM
1398elf_s390_gc_mark_hook (asection *sec,
1399 struct bfd_link_info *info,
1400 Elf_Internal_Rela *rel,
1401 struct elf_link_hash_entry *h,
1402 Elf_Internal_Sym *sym)
a85d7ed0
NC
1403{
1404 if (h != NULL)
07adf181
AM
1405 switch (ELF32_R_TYPE (rel->r_info))
1406 {
1407 case R_390_GNU_VTINHERIT:
1408 case R_390_GNU_VTENTRY:
1409 return NULL;
1410 }
1411 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0 1412
a85d7ed0
NC
1413}
1414
1415/* Update the got entry reference counts for the section being removed. */
1416
b34976b6 1417static bfd_boolean
07adf181
AM
1418elf_s390_gc_sweep_hook (bfd *abfd,
1419 struct bfd_link_info *info,
1420 asection *sec,
1421 const Elf_Internal_Rela *relocs)
a85d7ed0 1422{
470b557a 1423 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC
1424 Elf_Internal_Shdr *symtab_hdr;
1425 struct elf_link_hash_entry **sym_hashes;
1426 bfd_signed_vma *local_got_refcounts;
1427 const Elf_Internal_Rela *rel, *relend;
a85d7ed0 1428
7dda2462
TG
1429 if (info->relocatable)
1430 return TRUE;
1431
470b557a
AK
1432 htab = elf_s390_hash_table (info);
1433 if (htab == NULL)
1434 return FALSE;
1435
ec338859 1436 elf_section_data (sec)->local_dynrel = NULL;
a85d7ed0 1437
0ffa91dd 1438 symtab_hdr = &elf_symtab_hdr (abfd);
0451c93c
MS
1439 sym_hashes = elf_sym_hashes (abfd);
1440 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0
NC
1441
1442 relend = relocs + sec->reloc_count;
1443 for (rel = relocs; rel < relend; rel++)
5236c819 1444 {
26e41594
AM
1445 unsigned long r_symndx;
1446 unsigned int r_type;
1447 struct elf_link_hash_entry *h = NULL;
1448
5236c819 1449 r_symndx = ELF32_R_SYM (rel->r_info);
26e41594
AM
1450 if (r_symndx >= symtab_hdr->sh_info)
1451 {
1452 struct elf_s390_link_hash_entry *eh;
00d8c7a9
AK
1453 struct elf_dyn_relocs **pp;
1454 struct elf_dyn_relocs *p;
0451c93c 1455
26e41594 1456 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM
1457 while (h->root.type == bfd_link_hash_indirect
1458 || h->root.type == bfd_link_hash_warning)
1459 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1460 eh = (struct elf_s390_link_hash_entry *) h;
5236c819 1461
26e41594
AM
1462 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1463 if (p->sec == sec)
1464 {
1465 /* Everything must go for SEC. */
1466 *pp = p->next;
1467 break;
1468 }
1469 }
470b557a
AK
1470 else
1471 {
1472 Elf_Internal_Sym *isym;
1473
1474 /* A local symbol. */
1475 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1476 abfd, r_symndx);
1477 if (isym == NULL)
1478 return FALSE;
1479
1480 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1481 {
1482 struct plt_entry *plt = elf_s390_local_plt (abfd);
1483 if (plt[r_symndx].plt.refcount > 0)
1484 plt[r_symndx].plt.refcount--;
1485 }
1486 }
26e41594
AM
1487
1488 r_type = ELF32_R_TYPE (rel->r_info);
1489 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
69fc87f1 1490 switch (r_type)
5236c819 1491 {
69fc87f1
MS
1492 case R_390_TLS_LDM32:
1493 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1494 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1495 break;
1496
1497 case R_390_TLS_GD32:
1498 case R_390_TLS_IE32:
1499 case R_390_TLS_GOTIE12:
bd1ea41b 1500 case R_390_TLS_GOTIE20:
69fc87f1
MS
1501 case R_390_TLS_GOTIE32:
1502 case R_390_TLS_IEENT:
5236c819
MS
1503 case R_390_GOT12:
1504 case R_390_GOT16:
bd1ea41b 1505 case R_390_GOT20:
5236c819
MS
1506 case R_390_GOT32:
1507 case R_390_GOTOFF16:
1508 case R_390_GOTOFF32:
1509 case R_390_GOTPC:
1510 case R_390_GOTPCDBL:
1511 case R_390_GOTENT:
1512 if (h != NULL)
1513 {
1514 if (h->got.refcount > 0)
1515 h->got.refcount -= 1;
1516 }
1517 else if (local_got_refcounts != NULL)
1518 {
1519 if (local_got_refcounts[r_symndx] > 0)
1520 local_got_refcounts[r_symndx] -= 1;
1521 }
26e41594 1522 break;
a85d7ed0 1523
5236c819
MS
1524 case R_390_8:
1525 case R_390_12:
1526 case R_390_16:
bd1ea41b 1527 case R_390_20:
5236c819
MS
1528 case R_390_32:
1529 case R_390_PC16:
1530 case R_390_PC16DBL:
1531 case R_390_PC32DBL:
1532 case R_390_PC32:
26e41594
AM
1533 if (info->shared)
1534 break;
1535 /* Fall through. */
1536
69fc87f1
MS
1537 case R_390_PLT16DBL:
1538 case R_390_PLT32DBL:
1539 case R_390_PLT32:
1540 case R_390_PLTOFF16:
1541 case R_390_PLTOFF32:
1542 if (h != NULL)
1543 {
1544 if (h->plt.refcount > 0)
1545 h->plt.refcount -= 1;
1546 }
1547 break;
1548
1549 case R_390_GOTPLT12:
1550 case R_390_GOTPLT16:
bd1ea41b 1551 case R_390_GOTPLT20:
69fc87f1
MS
1552 case R_390_GOTPLT32:
1553 case R_390_GOTPLTENT:
1554 if (h != NULL)
1555 {
1556 if (h->plt.refcount > 0)
1557 {
1558 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1559 h->plt.refcount -= 1;
1560 }
1561 }
1562 else if (local_got_refcounts != NULL)
1563 {
1564 if (local_got_refcounts[r_symndx] > 0)
1565 local_got_refcounts[r_symndx] -= 1;
1566 }
1567 break;
1568
5236c819
MS
1569 default:
1570 break;
1571 }
1572 }
a85d7ed0 1573
b34976b6 1574 return TRUE;
a85d7ed0
NC
1575}
1576
5236c819
MS
1577/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1578 entry but we found we will not create any. Called when we find we will
1579 not have any PLT for this symbol, by for example
1580 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1581 or elf_s390_size_dynamic_sections if no dynamic sections will be
1582 created (we're only linking static objects). */
1583
1584static void
2c3fc389 1585elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS
1586{
1587 if (h->elf.root.type == bfd_link_hash_warning)
1588 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1589
1590 if (h->gotplt_refcount <= 0)
1591 return;
1592
1593 /* We simply add the number of gotplt references to the number
1594 * of got references for this symbol. */
1595 h->elf.got.refcount += h->gotplt_refcount;
1596 h->gotplt_refcount = -1;
1597}
1598
a85d7ed0
NC
1599/* Adjust a symbol defined by a dynamic object and referenced by a
1600 regular object. The current definition is in some section of the
1601 dynamic object, but we're not including those sections. We have to
1602 change the definition to something the rest of the link can
1603 understand. */
1604
b34976b6 1605static bfd_boolean
2c3fc389
NC
1606elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1607 struct elf_link_hash_entry *h)
a85d7ed0 1608{
0451c93c 1609 struct elf_s390_link_hash_table *htab;
a85d7ed0 1610 asection *s;
a85d7ed0 1611
470b557a
AK
1612 /* STT_GNU_IFUNC symbol must go through PLT. */
1613 if (s390_is_ifunc_symbol_p (h))
1614 return TRUE;
1615
a85d7ed0
NC
1616 /* If this is a function, put it in the procedure linkage table. We
1617 will fill in the contents of the procedure linkage table later
cedb70c5 1618 (although we could actually do it here). */
a85d7ed0 1619 if (h->type == STT_FUNC
f5385ebf 1620 || h->needs_plt)
a85d7ed0 1621 {
0451c93c 1622 if (h->plt.refcount <= 0
8c21ca21
AK
1623 || SYMBOL_CALLS_LOCAL (info, h)
1624 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1625 && h->root.type != bfd_link_hash_undefweak))
a85d7ed0
NC
1626 {
1627 /* This case can occur if we saw a PLT32 reloc in an input
26e41594
AM
1628 file, but the symbol was never referred to by a dynamic
1629 object, or if all references were garbage collected. In
a85d7ed0
NC
1630 such a case, we don't actually need to build a procedure
1631 linkage table, and we can just do a PC32 reloc instead. */
1632 h->plt.offset = (bfd_vma) -1;
f5385ebf 1633 h->needs_plt = 0;
5236c819 1634 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC
1635 }
1636
b34976b6 1637 return TRUE;
a85d7ed0 1638 }
bbd7ec4a 1639 else
0451c93c
MS
1640 /* It's possible that we incorrectly decided a .plt reloc was
1641 needed for an R_390_PC32 reloc to a non-function sym in
1642 check_relocs. We can't decide accurately between function and
1643 non-function syms in check-relocs; Objects loaded later in
1644 the link may change h->type. So fix it now. */
bbd7ec4a 1645 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC
1646
1647 /* If this is a weak symbol, and there is a real definition, the
1648 processor independent code will have arranged for us to see the
1649 real definition first, and we can just use the same value. */
f6e332e6 1650 if (h->u.weakdef != NULL)
a85d7ed0 1651 {
f6e332e6
AM
1652 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1653 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1654 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1655 h->root.u.def.value = h->u.weakdef->root.u.def.value;
64285810 1656 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1657 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1658 return TRUE;
a85d7ed0
NC
1659 }
1660
1661 /* This is a reference to a symbol defined by a dynamic object which
1662 is not a function. */
1663
1664 /* If we are creating a shared library, we must presume that the
1665 only references to the symbol are via the global offset table.
1666 For such cases we need not do anything here; the relocations will
1667 be handled correctly by relocate_section. */
1668 if (info->shared)
b34976b6 1669 return TRUE;
a85d7ed0
NC
1670
1671 /* If there are no references to this symbol that do not use the
1672 GOT, we don't need to generate a copy reloc. */
f5385ebf 1673 if (!h->non_got_ref)
b34976b6 1674 return TRUE;
a85d7ed0 1675
0451c93c
MS
1676 /* If -z nocopyreloc was given, we won't generate them either. */
1677 if (info->nocopyreloc)
1678 {
f5385ebf 1679 h->non_got_ref = 0;
b34976b6 1680 return TRUE;
0451c93c
MS
1681 }
1682
64285810 1683 if (ELIMINATE_COPY_RELOCS)
0451c93c 1684 {
64285810 1685 struct elf_s390_link_hash_entry * eh;
00d8c7a9 1686 struct elf_dyn_relocs *p;
0451c93c 1687
64285810
MS
1688 eh = (struct elf_s390_link_hash_entry *) h;
1689 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1690 {
1691 s = p->sec->output_section;
1692 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1693 break;
1694 }
1695
1696 /* If we didn't find any dynamic relocs in read-only sections, then
1697 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1698 if (p == NULL)
1699 {
f5385ebf 1700 h->non_got_ref = 0;
64285810
MS
1701 return TRUE;
1702 }
0451c93c
MS
1703 }
1704
a85d7ed0
NC
1705 /* We must allocate the symbol in our .dynbss section, which will
1706 become part of the .bss section of the executable. There will be
1707 an entry for this symbol in the .dynsym section. The dynamic
1708 object will contain position independent code, so all references
1709 from the dynamic object to this symbol will go through the global
1710 offset table. The dynamic linker will use the .dynsym entry to
1711 determine the address it must put in the global offset table, so
1712 both the dynamic object and the regular object will refer to the
1713 same memory location for the variable. */
1714
0451c93c 1715 htab = elf_s390_hash_table (info);
a85d7ed0 1716
0451c93c
MS
1717 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1718 copy the initial value out of the dynamic object and into the
1719 runtime process image. */
1d7e9d18 1720 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1721 {
eea6121a 1722 htab->srelbss->size += sizeof (Elf32_External_Rela);
f5385ebf 1723 h->needs_copy = 1;
a85d7ed0
NC
1724 }
1725
0451c93c 1726 s = htab->sdynbss;
a85d7ed0 1727
027297b7 1728 return _bfd_elf_adjust_dynamic_copy (h, s);
a85d7ed0
NC
1729}
1730
0451c93c
MS
1731/* Allocate space in .plt, .got and associated reloc sections for
1732 dynamic relocs. */
1733
b34976b6 1734static bfd_boolean
2c3fc389 1735allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS
1736{
1737 struct bfd_link_info *info;
1738 struct elf_s390_link_hash_table *htab;
470b557a 1739 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1740 struct elf_dyn_relocs *p;
0451c93c 1741
e92d460e 1742 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1743 return TRUE;
0451c93c
MS
1744
1745 info = (struct bfd_link_info *) inf;
1746 htab = elf_s390_hash_table (info);
1747
470b557a
AK
1748 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1749 here if it is defined and referenced in a non-shared object. */
1750 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1751 return s390_elf_allocate_ifunc_dyn_relocs (info, h,
1752 &eh->dyn_relocs);
1753 else if (htab->elf.dynamic_sections_created
1754 && h->plt.refcount > 0)
0451c93c
MS
1755 {
1756 /* Make sure this symbol is output as a dynamic symbol.
1757 Undefined weak syms won't yet be marked as dynamic. */
1758 if (h->dynindx == -1
f5385ebf 1759 && !h->forced_local)
0451c93c 1760 {
c152c796 1761 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1762 return FALSE;
0451c93c
MS
1763 }
1764
82058a73 1765 if (info->shared
4ec72bde 1766 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1767 {
f41345a7 1768 asection *s = htab->elf.splt;
0451c93c
MS
1769
1770 /* If this is the first .plt entry, make room for the special
1771 first entry. */
eea6121a
AM
1772 if (s->size == 0)
1773 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1774
eea6121a 1775 h->plt.offset = s->size;
0451c93c
MS
1776
1777 /* If this symbol is not defined in a regular file, and we are
1778 not generating a shared library, then set the symbol to this
1779 location in the .plt. This is required to make function
1780 pointers compare as equal between the normal executable and
1781 the shared library. */
1782 if (! info->shared
f5385ebf 1783 && !h->def_regular)
0451c93c
MS
1784 {
1785 h->root.u.def.section = s;
1786 h->root.u.def.value = h->plt.offset;
1787 }
ec338859 1788
0451c93c 1789 /* Make room for this entry. */
eea6121a 1790 s->size += PLT_ENTRY_SIZE;
ec338859 1791
0451c93c
MS
1792 /* We also need to make an entry in the .got.plt section, which
1793 will be placed in the .got section by the linker script. */
f41345a7 1794 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS
1795
1796 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1797 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
0451c93c
MS
1798 }
1799 else
1800 {
1801 h->plt.offset = (bfd_vma) -1;
f5385ebf 1802 h->needs_plt = 0;
5236c819 1803 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c 1804 }
ec338859 1805 }
0451c93c
MS
1806 else
1807 {
1808 h->plt.offset = (bfd_vma) -1;
f5385ebf 1809 h->needs_plt = 0;
5236c819 1810 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
ec338859
AM
1811 }
1812
69fc87f1
MS
1813 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1814 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1815 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1816 we can save the dynamic TLS relocation. */
1817 if (h->got.refcount > 0
1818 && !info->shared
1819 && h->dynindx == -1
1820 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
0451c93c 1821 {
69fc87f1
MS
1822 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1823 /* For the GOTIE access without a literal pool entry the offset has
1824 to be stored somewhere. The immediate value in the instruction
1825 is not bit enough so the value is stored in the got. */
1826 {
f41345a7
AK
1827 h->got.offset = htab->elf.sgot->size;
1828 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS
1829 }
1830 else
1831 h->got.offset = (bfd_vma) -1;
1832 }
1833 else if (h->got.refcount > 0)
1834 {
0451c93c 1835 asection *s;
b34976b6 1836 bfd_boolean dyn;
69fc87f1 1837 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS
1838
1839 /* Make sure this symbol is output as a dynamic symbol.
1840 Undefined weak syms won't yet be marked as dynamic. */
1841 if (h->dynindx == -1
f5385ebf 1842 && !h->forced_local)
0451c93c 1843 {
c152c796 1844 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1845 return FALSE;
0451c93c
MS
1846 }
1847
f41345a7 1848 s = htab->elf.sgot;
eea6121a
AM
1849 h->got.offset = s->size;
1850 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS
1851 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1852 if (tls_type == GOT_TLS_GD)
eea6121a 1853 s->size += GOT_ENTRY_SIZE;
0451c93c 1854 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS
1855 /* R_390_TLS_IE32 needs one dynamic relocation,
1856 R_390_TLS_GD32 needs one if local symbol and two if global. */
1857 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1858 || tls_type >= GOT_TLS_IE)
f41345a7 1859 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1 1860 else if (tls_type == GOT_TLS_GD)
f41345a7 1861 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela);
82058a73
MS
1862 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1863 || h->root.type != bfd_link_hash_undefweak)
1864 && (info->shared
1865 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1866 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
0451c93c
MS
1867 }
1868 else
1869 h->got.offset = (bfd_vma) -1;
1870
0451c93c 1871 if (eh->dyn_relocs == NULL)
b34976b6 1872 return TRUE;
0451c93c
MS
1873
1874 /* In the shared -Bsymbolic case, discard space allocated for
1875 dynamic pc-relative relocs against symbols which turn out to be
1876 defined in regular objects. For the normal shared case, discard
1877 space for pc-relative relocs that have become local due to symbol
1878 visibility changes. */
1879
1880 if (info->shared)
1881 {
8c21ca21 1882 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1883 {
00d8c7a9 1884 struct elf_dyn_relocs **pp;
0451c93c
MS
1885
1886 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1887 {
1888 p->count -= p->pc_count;
1889 p->pc_count = 0;
1890 if (p->count == 0)
1891 *pp = p->next;
1892 else
1893 pp = &p->next;
1894 }
1895 }
82058a73
MS
1896
1897 /* Also discard relocs on undefined weak syms with non-default
1898 visibility. */
22d606e9 1899 if (eh->dyn_relocs != NULL
82058a73 1900 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM
1901 {
1902 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1903 eh->dyn_relocs = NULL;
1904
1905 /* Make sure undefined weak symbols are output as a dynamic
1906 symbol in PIEs. */
1907 else if (h->dynindx == -1
1908 && !h->forced_local)
1909 {
1910 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1911 return FALSE;
1912 }
1913 }
0451c93c 1914 }
64285810 1915 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS
1916 {
1917 /* For the non-shared case, discard space for relocs against
1918 symbols which turn out to need copy relocs or are not
1919 dynamic. */
1920
f5385ebf
AM
1921 if (!h->non_got_ref
1922 && ((h->def_dynamic
1923 && !h->def_regular)
0451c93c
MS
1924 || (htab->elf.dynamic_sections_created
1925 && (h->root.type == bfd_link_hash_undefweak
1926 || h->root.type == bfd_link_hash_undefined))))
1927 {
1928 /* Make sure this symbol is output as a dynamic symbol.
1929 Undefined weak syms won't yet be marked as dynamic. */
1930 if (h->dynindx == -1
f5385ebf 1931 && !h->forced_local)
0451c93c 1932 {
c152c796 1933 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1934 return FALSE;
0451c93c
MS
1935 }
1936
1937 /* If that succeeded, we know we'll be keeping all the
1938 relocs. */
1939 if (h->dynindx != -1)
1940 goto keep;
1941 }
1942
1943 eh->dyn_relocs = NULL;
1944
ec338859 1945 keep: ;
0451c93c
MS
1946 }
1947
1948 /* Finally, allocate space. */
1949 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1950 {
1951 asection *sreloc = elf_section_data (p->sec)->sreloc;
ae9a127f 1952
eea6121a 1953 sreloc->size += p->count * sizeof (Elf32_External_Rela);
0451c93c
MS
1954 }
1955
b34976b6 1956 return TRUE;
0451c93c
MS
1957}
1958
1959/* Find any dynamic relocs that apply to read-only sections. */
1960
b34976b6 1961static bfd_boolean
2c3fc389 1962readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS
1963{
1964 struct elf_s390_link_hash_entry *eh;
00d8c7a9 1965 struct elf_dyn_relocs *p;
0451c93c
MS
1966
1967 eh = (struct elf_s390_link_hash_entry *) h;
1968 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1969 {
1970 asection *s = p->sec->output_section;
1971
1972 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1973 {
1974 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1975
1976 info->flags |= DF_TEXTREL;
1977
1978 /* Not an error, just cut short the traversal. */
b34976b6 1979 return FALSE;
0451c93c
MS
1980 }
1981 }
b34976b6 1982 return TRUE;
0451c93c
MS
1983}
1984
a85d7ed0
NC
1985/* Set the sizes of the dynamic sections. */
1986
b34976b6 1987static bfd_boolean
2c3fc389
NC
1988elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1989 struct bfd_link_info *info)
a85d7ed0 1990{
0451c93c 1991 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC
1992 bfd *dynobj;
1993 asection *s;
b34976b6 1994 bfd_boolean relocs;
0451c93c 1995 bfd *ibfd;
a85d7ed0 1996
0451c93c
MS
1997 htab = elf_s390_hash_table (info);
1998 dynobj = htab->elf.dynobj;
1999 if (dynobj == NULL)
2000 abort ();
a85d7ed0 2001
0451c93c 2002 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC
2003 {
2004 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2005 if (info->executable)
a85d7ed0 2006 {
3d4d4302 2007 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS
2008 if (s == NULL)
2009 abort ();
eea6121a 2010 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC
2011 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2012 }
2013 }
a85d7ed0 2014
0451c93c
MS
2015 /* Set up .got offsets for local syms, and space for local dynamic
2016 relocs. */
2017 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
a85d7ed0 2018 {
0451c93c
MS
2019 bfd_signed_vma *local_got;
2020 bfd_signed_vma *end_local_got;
69fc87f1 2021 char *local_tls_type;
0451c93c
MS
2022 bfd_size_type locsymcount;
2023 Elf_Internal_Shdr *symtab_hdr;
2024 asection *srela;
470b557a
AK
2025 struct plt_entry *local_plt;
2026 unsigned int i;
a85d7ed0 2027
0ffa91dd 2028 if (! is_s390_elf (ibfd))
a85d7ed0
NC
2029 continue;
2030
0451c93c 2031 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 2032 {
00d8c7a9 2033 struct elf_dyn_relocs *p;
0451c93c 2034
6edfbbad 2035 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 2036 {
ec338859
AM
2037 if (!bfd_is_abs_section (p->sec)
2038 && bfd_is_abs_section (p->sec->output_section))
2039 {
2040 /* Input section has been discarded, either because
2041 it is a copy of a linkonce section or due to
2042 linker script /DISCARD/, so we'll be discarding
2043 the relocs too. */
2044 }
248866a8 2045 else if (p->count != 0)
ec338859
AM
2046 {
2047 srela = elf_section_data (p->sec)->sreloc;
eea6121a 2048 srela->size += p->count * sizeof (Elf32_External_Rela);
248866a8
AM
2049 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2050 info->flags |= DF_TEXTREL;
ec338859 2051 }
a85d7ed0
NC
2052 }
2053 }
0451c93c
MS
2054
2055 local_got = elf_local_got_refcounts (ibfd);
2056 if (!local_got)
2057 continue;
2058
0ffa91dd 2059 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS
2060 locsymcount = symtab_hdr->sh_info;
2061 end_local_got = local_got + locsymcount;
69fc87f1 2062 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK
2063 s = htab->elf.sgot;
2064 srela = htab->elf.srelgot;
69fc87f1 2065 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 2066 {
0451c93c 2067 if (*local_got > 0)
a85d7ed0 2068 {
eea6121a
AM
2069 *local_got = s->size;
2070 s->size += GOT_ENTRY_SIZE;
69fc87f1 2071 if (*local_tls_type == GOT_TLS_GD)
eea6121a 2072 s->size += GOT_ENTRY_SIZE;
0451c93c 2073 if (info->shared)
eea6121a 2074 srela->size += sizeof (Elf32_External_Rela);
a85d7ed0
NC
2075 }
2076 else
0451c93c
MS
2077 *local_got = (bfd_vma) -1;
2078 }
470b557a
AK
2079 local_plt = elf_s390_local_plt (ibfd);
2080 for (i = 0; i < symtab_hdr->sh_info; i++)
2081 {
2082 if (local_plt[i].plt.refcount > 0)
2083 {
2084 local_plt[i].plt.offset = htab->elf.iplt->size;
2085 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2086 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2087 htab->elf.irelplt->size += RELA_ENTRY_SIZE;
2088 }
2089 else
2090 local_plt[i].plt.offset = (bfd_vma) -1;
2091 }
0451c93c
MS
2092 }
2093
69fc87f1
MS
2094 if (htab->tls_ldm_got.refcount > 0)
2095 {
2096 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2097 relocs. */
f41345a7
AK
2098 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2099 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2100 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1
MS
2101 }
2102 else
2103 htab->tls_ldm_got.offset = -1;
2104
0451c93c
MS
2105 /* Allocate global sym .plt and .got entries, and space for global
2106 sym dynamic relocs. */
2c3fc389 2107 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS
2108
2109 /* We now have determined the sizes of the various dynamic sections.
2110 Allocate memory for them. */
b34976b6 2111 relocs = FALSE;
0451c93c
MS
2112 for (s = dynobj->sections; s != NULL; s = s->next)
2113 {
2114 if ((s->flags & SEC_LINKER_CREATED) == 0)
2115 continue;
2116
f41345a7
AK
2117 if (s == htab->elf.splt
2118 || s == htab->elf.sgot
2119 || s == htab->elf.sgotplt
470b557a
AK
2120 || s == htab->sdynbss
2121 || s == htab->elf.iplt
2122 || s == htab->elf.igotplt
2123 || s == htab->irelifunc)
0451c93c
MS
2124 {
2125 /* Strip this section if we don't need it; see the
2126 comment below. */
a85d7ed0 2127 }
0112cd26 2128 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 2129 {
eea6121a 2130 if (s->size != 0)
b34976b6 2131 relocs = TRUE;
ec338859 2132
0451c93c
MS
2133 /* We use the reloc_count field as a counter if we need
2134 to copy relocs into the output file. */
2135 s->reloc_count = 0;
2136 }
2137 else
a85d7ed0
NC
2138 {
2139 /* It's not one of our sections, so don't allocate space. */
2140 continue;
2141 }
2142
eea6121a 2143 if (s->size == 0)
a85d7ed0 2144 {
0451c93c
MS
2145 /* If we don't need this section, strip it from the
2146 output file. This is to handle .rela.bss and
2147 .rela.plt. We must create it in
2148 create_dynamic_sections, because it must be created
2149 before the linker maps input sections to output
2150 sections. The linker does that before
2151 adjust_dynamic_symbol is called, and it is that
2152 function which decides whether anything needs to go
2153 into these sections. */
2154
8423293d 2155 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC
2156 continue;
2157 }
2158
c456f082
AM
2159 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2160 continue;
2161
0451c93c
MS
2162 /* Allocate memory for the section contents. We use bfd_zalloc
2163 here in case unused entries are not reclaimed before the
2164 section's contents are written out. This should not happen,
2165 but this way if it does, we get a R_390_NONE reloc instead
2166 of garbage. */
eea6121a 2167 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 2168 if (s->contents == NULL)
b34976b6 2169 return FALSE;
a85d7ed0 2170 }
ec338859 2171
0451c93c 2172 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC
2173 {
2174 /* Add some entries to the .dynamic section. We fill in the
2175 values later, in elf_s390_finish_dynamic_sections, but we
2176 must add the entries now so that we get the correct size for
2177 the .dynamic section. The DT_DEBUG entry is filled in by the
2178 dynamic linker and used by the debugger. */
dc810e39 2179#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2180 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
ec338859 2181
36af4a4e 2182 if (info->executable)
a85d7ed0 2183 {
dc810e39 2184 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2185 return FALSE;
a85d7ed0 2186 }
ec338859 2187
f41345a7 2188 if (htab->elf.splt->size != 0)
a85d7ed0 2189 {
dc810e39
AM
2190 if (!add_dynamic_entry (DT_PLTGOT, 0)
2191 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2192 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2193 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2194 return FALSE;
a85d7ed0 2195 }
ec338859 2196
a85d7ed0 2197 if (relocs)
26e41594
AM
2198 {
2199 if (!add_dynamic_entry (DT_RELA, 0)
2200 || !add_dynamic_entry (DT_RELASZ, 0)
2201 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 2202 return FALSE;
a85d7ed0 2203
0451c93c
MS
2204 /* If any dynamic relocs apply to a read-only section,
2205 then we need a DT_TEXTREL entry. */
248866a8 2206 if ((info->flags & DF_TEXTREL) == 0)
2c3fc389 2207 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
ec338859 2208
0451c93c
MS
2209 if ((info->flags & DF_TEXTREL) != 0)
2210 {
2211 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2212 return FALSE;
0451c93c 2213 }
a85d7ed0
NC
2214 }
2215 }
dc810e39 2216#undef add_dynamic_entry
ec338859 2217
b34976b6 2218 return TRUE;
a85d7ed0
NC
2219}
2220
69fc87f1
MS
2221/* Return the base VMA address which should be subtracted from real addresses
2222 when resolving @dtpoff relocation.
2223 This is PT_TLS segment p_vaddr. */
2224
2225static bfd_vma
2c3fc389 2226dtpoff_base (struct bfd_link_info *info)
69fc87f1 2227{
e1918d23
AM
2228 /* If tls_sec is NULL, we should have signalled an error already. */
2229 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2230 return 0;
e1918d23 2231 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS
2232}
2233
2234/* Return the relocation value for @tpoff relocation
2235 if STT_TLS virtual address is ADDRESS. */
2236
2237static bfd_vma
2c3fc389 2238tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2239{
e1918d23 2240 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2241
e1918d23
AM
2242 /* If tls_sec is NULL, we should have signalled an error already. */
2243 if (htab->tls_sec == NULL)
69fc87f1 2244 return 0;
e1918d23 2245 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS
2246}
2247
2248/* Complain if TLS instruction relocation is against an invalid
2249 instruction. */
2250
2251static void
2c3fc389
NC
2252invalid_tls_insn (bfd *input_bfd,
2253 asection *input_section,
2254 Elf_Internal_Rela *rel)
69fc87f1
MS
2255{
2256 reloc_howto_type *howto;
2257
2258 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2259 (*_bfd_error_handler)
d003868e
AM
2260 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2261 input_bfd,
2262 input_section,
69fc87f1
MS
2263 (long) rel->r_offset,
2264 howto->name);
77df2968 2265 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS
2266}
2267
a85d7ed0
NC
2268/* Relocate a 390 ELF section. */
2269
b34976b6 2270static bfd_boolean
2c3fc389
NC
2271elf_s390_relocate_section (bfd *output_bfd,
2272 struct bfd_link_info *info,
2273 bfd *input_bfd,
2274 asection *input_section,
2275 bfd_byte *contents,
2276 Elf_Internal_Rela *relocs,
2277 Elf_Internal_Sym *local_syms,
2278 asection **local_sections)
a85d7ed0 2279{
0451c93c 2280 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC
2281 Elf_Internal_Shdr *symtab_hdr;
2282 struct elf_link_hash_entry **sym_hashes;
2283 bfd_vma *local_got_offsets;
a85d7ed0
NC
2284 Elf_Internal_Rela *rel;
2285 Elf_Internal_Rela *relend;
2286
0ffa91dd
NC
2287 BFD_ASSERT (is_s390_elf (input_bfd));
2288
0451c93c 2289 htab = elf_s390_hash_table (info);
0ffa91dd 2290 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC
2291 sym_hashes = elf_sym_hashes (input_bfd);
2292 local_got_offsets = elf_local_got_offsets (input_bfd);
2293
a85d7ed0
NC
2294 rel = relocs;
2295 relend = relocs + input_section->reloc_count;
2296 for (; rel < relend; rel++)
2297 {
5236c819 2298 unsigned int r_type;
a85d7ed0
NC
2299 reloc_howto_type *howto;
2300 unsigned long r_symndx;
2301 struct elf_link_hash_entry *h;
2302 Elf_Internal_Sym *sym;
2303 asection *sec;
0451c93c 2304 bfd_vma off;
a85d7ed0 2305 bfd_vma relocation;
b34976b6 2306 bfd_boolean unresolved_reloc;
a85d7ed0 2307 bfd_reloc_status_type r;
69fc87f1 2308 int tls_type;
470b557a 2309 asection *base_got = htab->elf.sgot;
ec338859 2310
a85d7ed0
NC
2311 r_type = ELF32_R_TYPE (rel->r_info);
2312 if (r_type == (int) R_390_GNU_VTINHERIT
26e41594
AM
2313 || r_type == (int) R_390_GNU_VTENTRY)
2314 continue;
5236c819 2315 if (r_type >= (int) R_390_max)
a85d7ed0
NC
2316 {
2317 bfd_set_error (bfd_error_bad_value);
b34976b6 2318 return FALSE;
a85d7ed0 2319 }
ec338859 2320
b491616a 2321 howto = elf_howto_table + r_type;
a85d7ed0 2322 r_symndx = ELF32_R_SYM (rel->r_info);
5236c819 2323
a85d7ed0
NC
2324 h = NULL;
2325 sym = NULL;
2326 sec = NULL;
b34976b6 2327 unresolved_reloc = FALSE;
a85d7ed0
NC
2328 if (r_symndx < symtab_hdr->sh_info)
2329 {
2330 sym = local_syms + r_symndx;
2331 sec = local_sections[r_symndx];
470b557a
AK
2332 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2333 {
2334 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2335 if (local_plt == NULL)
2336 return FALSE;
2337
2338 /* Address of the PLT slot. */
2339 relocation = (htab->elf.iplt->output_section->vma
2340 + htab->elf.iplt->output_offset
2341 + local_plt[r_symndx].plt.offset);
2342
2343 switch (r_type)
2344 {
31db78f6
AK
2345 case R_390_PLTOFF16:
2346 case R_390_PLTOFF32:
2347 relocation -= htab->elf.sgot->output_section->vma;
2348 break;
470b557a
AK
2349 case R_390_GOTPLT12:
2350 case R_390_GOTPLT16:
2351 case R_390_GOTPLT20:
2352 case R_390_GOTPLT32:
2353 case R_390_GOTPLTENT:
2354 case R_390_GOT12:
2355 case R_390_GOT16:
2356 case R_390_GOT20:
2357 case R_390_GOT32:
2358 case R_390_GOTENT:
2359 {
2360 /* Write the PLT slot address into the GOT slot. */
2361 bfd_put_32 (output_bfd, relocation,
2362 htab->elf.sgot->contents +
2363 local_got_offsets[r_symndx]);
2364 relocation = (local_got_offsets[r_symndx] +
2365 htab->elf.sgot->output_offset);
2366
2367 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2368 relocation += htab->elf.sgot->output_section->vma;
2369 break;
2370 }
2371 default:
2372 break;
2373 }
2374 /* The output section is needed later in
2375 finish_dynamic_section when creating the dynamic
2376 relocation. */
2377 local_plt[r_symndx].sec = sec;
2378 goto do_relocation;
2379 }
2380 else
2381 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC
2382 }
2383 else
2384 {
560e09e9 2385 bfd_boolean warned ATTRIBUTE_UNUSED;
ec338859 2386
b2a8e766
AM
2387 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2388 r_symndx, symtab_hdr, sym_hashes,
2389 h, sec, relocation,
2390 unresolved_reloc, warned);
a85d7ed0 2391 }
ec338859 2392
dbaa2011 2393 if (sec != NULL && discarded_section (sec))
e4067dbb 2394 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2395 rel, 1, relend, howto, 0, contents);
ab96bf03
AM
2396
2397 if (info->relocatable)
2398 continue;
2399
a85d7ed0
NC
2400 switch (r_type)
2401 {
5236c819
MS
2402 case R_390_GOTPLT12:
2403 case R_390_GOTPLT16:
bd1ea41b 2404 case R_390_GOTPLT20:
5236c819
MS
2405 case R_390_GOTPLT32:
2406 case R_390_GOTPLTENT:
2407 /* There are three cases for a GOTPLT relocation. 1) The
2408 relocation is against the jump slot entry of a plt that
2409 will get emitted to the output file. 2) The relocation
2410 is against the jump slot of a plt entry that has been
2411 removed. elf_s390_adjust_gotplt has created a GOT entry
2412 as replacement. 3) The relocation is against a local symbol.
2413 Cases 2) and 3) are the same as the GOT relocation code
2414 so we just have to test for case 1 and fall through for
2415 the other two. */
2416 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2417 {
2418 bfd_vma plt_index;
2419
470b557a
AK
2420 if (s390_is_ifunc_symbol_p (h))
2421 {
2422 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2423 relocation = (plt_index * GOT_ENTRY_SIZE +
2424 htab->elf.igotplt->output_offset);
2425 if (r_type == R_390_GOTPLTENT)
2426 relocation += htab->elf.igotplt->output_section->vma;
2427 }
2428 else
2429 {
2430 /* Calc. index no.
2431 Current offset - size first entry / entry size. */
2432 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2433 PLT_ENTRY_SIZE;
2434
2435 /* Offset in GOT is PLT index plus GOT headers(3)
2436 times 4, addr & GOT addr. */
2437 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2438 if (r_type == R_390_GOTPLTENT)
2439 relocation += htab->elf.sgot->output_section->vma;
2440 }
5236c819
MS
2441 unresolved_reloc = FALSE;
2442
5236c819
MS
2443 }
2444 /* Fall through. */
2445
26e41594
AM
2446 case R_390_GOT12:
2447 case R_390_GOT16:
bd1ea41b 2448 case R_390_GOT20:
26e41594 2449 case R_390_GOT32:
befc3abb 2450 case R_390_GOTENT:
26e41594
AM
2451 /* Relocation is to the entry for this symbol in the global
2452 offset table. */
470b557a 2453 if (base_got == NULL)
0451c93c 2454 abort ();
ec338859 2455
26e41594
AM
2456 if (h != NULL)
2457 {
b34976b6 2458 bfd_boolean dyn;
ec338859 2459
26e41594 2460 off = h->got.offset;
0451c93c 2461 dyn = htab->elf.dynamic_sections_created;
470b557a
AK
2462
2463 if (s390_is_ifunc_symbol_p (h))
2464 {
2465 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2466 if (off == (bfd_vma)-1)
2467 {
2468 /* No explicit GOT usage so redirect to the
2469 got.iplt slot. */
2470 base_got = htab->elf.igotplt;
2471 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2472 }
2473 else
2474 {
2475 /* Explicit GOT slots must contain the address
2476 of the PLT slot. This will be handled in
2477 finish_dynamic_symbol. */
2478 }
2479 }
2480 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2481 || (info->shared
2482 && SYMBOL_REFERENCES_LOCAL (info, h))
2483 || (ELF_ST_VISIBILITY (h->other)
2484 && h->root.type == bfd_link_hash_undefweak))
2485
26e41594
AM
2486 {
2487 /* This is actually a static link, or it is a
2488 -Bsymbolic link and the symbol is defined
2489 locally, or the symbol was forced to be local
2490 because of a version file. We must initialize
2491 this entry in the global offset table. Since the
2492 offset must always be a multiple of 2, we use the
2493 least significant bit to record whether we have
2494 initialized it already.
2495
2496 When doing a dynamic link, we create a .rel.got
2497 relocation entry to initialize the value. This
2498 is done in the finish_dynamic_symbol routine. */
2499 if ((off & 1) != 0)
2500 off &= ~1;
2501 else
2502 {
a85d7ed0 2503 bfd_put_32 (output_bfd, relocation,
470b557a 2504 base_got->contents + off);
26e41594
AM
2505 h->got.offset |= 1;
2506 }
2507 }
0451c93c 2508 else
b34976b6 2509 unresolved_reloc = FALSE;
26e41594
AM
2510 }
2511 else
2512 {
0451c93c
MS
2513 if (local_got_offsets == NULL)
2514 abort ();
a85d7ed0 2515
26e41594 2516 off = local_got_offsets[r_symndx];
a85d7ed0 2517
26e41594
AM
2518 /* The offset must always be a multiple of 4. We use
2519 the least significant bit to record whether we have
2520 already generated the necessary reloc. */
2521 if ((off & 1) != 0)
2522 off &= ~1;
2523 else
2524 {
2525 bfd_put_32 (output_bfd, relocation,
f41345a7 2526 htab->elf.sgot->contents + off);
a85d7ed0 2527
26e41594
AM
2528 if (info->shared)
2529 {
2530 asection *srelgot;
2531 Elf_Internal_Rela outrel;
947216bf 2532 bfd_byte *loc;
a85d7ed0 2533
f41345a7 2534 srelgot = htab->elf.srelgot;
0451c93c
MS
2535 if (srelgot == NULL)
2536 abort ();
a85d7ed0 2537
f41345a7
AK
2538 outrel.r_offset = (htab->elf.sgot->output_section->vma
2539 + htab->elf.sgot->output_offset
26e41594
AM
2540 + off);
2541 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2542 outrel.r_addend = relocation;
947216bf
AM
2543 loc = srelgot->contents;
2544 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
26e41594
AM
2545 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2546 }
a85d7ed0 2547
26e41594
AM
2548 local_got_offsets[r_symndx] |= 1;
2549 }
2550 }
a85d7ed0 2551
0451c93c
MS
2552 if (off >= (bfd_vma) -2)
2553 abort ();
a85d7ed0 2554
470b557a 2555 relocation = base_got->output_offset + off;
befc3abb 2556
ae9a127f
NC
2557 /* For @GOTENT the relocation is against the offset between
2558 the instruction and the symbols entry in the GOT and not
2559 between the start of the GOT and the symbols entry. We
2560 add the vma of the GOT to get the correct value. */
5236c819
MS
2561 if ( r_type == R_390_GOTENT
2562 || r_type == R_390_GOTPLTENT)
470b557a 2563 relocation += base_got->output_section->vma;
befc3abb 2564
26e41594 2565 break;
dc810e39 2566
5236c819 2567 case R_390_GOTOFF16:
26e41594
AM
2568 case R_390_GOTOFF32:
2569 /* Relocation is relative to the start of the global offset
2570 table. */
2571
2572 /* Note that sgot->output_offset is not involved in this
2573 calculation. We always want the start of .got. If we
2574 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2575 permitted by the ABI, we might have to change this
2576 calculation. */
f41345a7 2577 relocation -= htab->elf.sgot->output_section->vma;
26e41594
AM
2578 break;
2579
2580 case R_390_GOTPC:
befc3abb 2581 case R_390_GOTPCDBL:
26e41594 2582 /* Use global offset table as symbol value. */
f41345a7 2583 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2584 unresolved_reloc = FALSE;
26e41594 2585 break;
a85d7ed0 2586
26e41594
AM
2587 case R_390_PLT16DBL:
2588 case R_390_PLT32DBL:
2589 case R_390_PLT32:
2590 /* Relocation is to the entry for this symbol in the
2591 procedure linkage table. */
a85d7ed0 2592
26e41594
AM
2593 /* Resolve a PLT32 reloc against a local symbol directly,
2594 without using the procedure linkage table. */
2595 if (h == NULL)
2596 break;
a85d7ed0 2597
26e41594 2598 if (h->plt.offset == (bfd_vma) -1
470b557a 2599 || (htab->elf.splt == NULL && htab->elf.iplt == NULL))
26e41594
AM
2600 {
2601 /* We didn't make a PLT entry for this symbol. This
2602 happens when statically linking PIC code, or when
2603 using -Bsymbolic. */
2604 break;
2605 }
2606
470b557a
AK
2607 if (s390_is_ifunc_symbol_p (h))
2608 relocation = (htab->elf.iplt->output_section->vma
2609 + htab->elf.iplt->output_offset
2610 + h->plt.offset);
2611 else
2612 relocation = (htab->elf.splt->output_section->vma
2613 + htab->elf.splt->output_offset
2614 + h->plt.offset);
b34976b6 2615 unresolved_reloc = FALSE;
26e41594 2616 break;
a85d7ed0 2617
5236c819
MS
2618 case R_390_PLTOFF16:
2619 case R_390_PLTOFF32:
26e41594
AM
2620 /* Relocation is to the entry for this symbol in the
2621 procedure linkage table relative to the start of the GOT. */
5236c819
MS
2622
2623 /* For local symbols or if we didn't make a PLT entry for
2624 this symbol resolve the symbol directly. */
31db78f6 2625 if (h == NULL
5236c819 2626 || h->plt.offset == (bfd_vma) -1
31db78f6 2627 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2628 {
f41345a7 2629 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS
2630 break;
2631 }
2632
470b557a
AK
2633 if (s390_is_ifunc_symbol_p (h))
2634 relocation = (htab->elf.iplt->output_section->vma
2635 + htab->elf.iplt->output_offset
2636 + h->plt.offset
2637 - htab->elf.sgot->output_section->vma);
2638 else
2639 relocation = (htab->elf.splt->output_section->vma
2640 + htab->elf.splt->output_offset
2641 + h->plt.offset
2642 - htab->elf.sgot->output_section->vma);
5236c819 2643 unresolved_reloc = FALSE;
26e41594
AM
2644 break;
2645
2646 case R_390_8:
2647 case R_390_16:
2648 case R_390_32:
2649 case R_390_PC16:
2650 case R_390_PC16DBL:
2651 case R_390_PC32DBL:
2652 case R_390_PC32:
470b557a
AK
2653 if (h != NULL
2654 && s390_is_ifunc_symbol_p (h)
2655 && h->def_regular)
2656 {
2657 if (!info->shared || !h->non_got_ref)
2658 {
2659 /* For a non-shared object STT_GNU_IFUNC symbol must
2660 go through PLT. */
2661 relocation = (htab->elf.iplt->output_section->vma
2662 + htab->elf.iplt->output_offset
2663 + h ->plt.offset);
2664 goto do_relocation;
2665 }
2666 else
2667 {
2668 /* For shared objects a runtime relocation is needed. */
2669
2670 Elf_Internal_Rela outrel;
2671 asection *sreloc;
2672
2673 /* Need a dynamic relocation to get the real function
2674 address. */
2675 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2676 info,
2677 input_section,
2678 rel->r_offset);
2679 if (outrel.r_offset == (bfd_vma) -1
2680 || outrel.r_offset == (bfd_vma) -2)
2681 abort ();
2682
2683 outrel.r_offset += (input_section->output_section->vma
2684 + input_section->output_offset);
2685
2686 if (h->dynindx == -1
2687 || h->forced_local
2688 || info->executable)
2689 {
2690 /* This symbol is resolved locally. */
2691 outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
2692 outrel.r_addend = (h->root.u.def.value
2693 + h->root.u.def.section->output_section->vma
2694 + h->root.u.def.section->output_offset);
2695 }
2696 else
2697 {
2698 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2699 outrel.r_addend = 0;
2700 }
2701
2702 sreloc = htab->elf.irelifunc;
2703 elf_append_rela (output_bfd, sreloc, &outrel);
2704
2705 /* If this reloc is against an external symbol, we
2706 do not want to fiddle with the addend. Otherwise,
2707 we need to include the symbol value so that it
2708 becomes an addend for the dynamic reloc. For an
2709 internal symbol, we have updated addend. */
2710 continue;
2711 }
2712 }
2713
b1e24c02 2714 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM
2715 break;
2716
26e41594 2717 if ((info->shared
82058a73
MS
2718 && (h == NULL
2719 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2720 || h->root.type != bfd_link_hash_undefweak)
0451c93c
MS
2721 && ((r_type != R_390_PC16
2722 && r_type != R_390_PC16DBL
befc3abb 2723 && r_type != R_390_PC32DBL
0451c93c 2724 && r_type != R_390_PC32)
8c21ca21 2725 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810
MS
2726 || (ELIMINATE_COPY_RELOCS
2727 && !info->shared
0451c93c
MS
2728 && h != NULL
2729 && h->dynindx != -1
f5385ebf
AM
2730 && !h->non_got_ref
2731 && ((h->def_dynamic
2732 && !h->def_regular)
0451c93c
MS
2733 || h->root.type == bfd_link_hash_undefweak
2734 || h->root.type == bfd_link_hash_undefined)))
26e41594
AM
2735 {
2736 Elf_Internal_Rela outrel;
2737 bfd_boolean skip, relocate;
0451c93c 2738 asection *sreloc;
947216bf 2739 bfd_byte *loc;
ec338859 2740
0451c93c
MS
2741 /* When generating a shared object, these relocations
2742 are copied into the output file to be resolved at run
2743 time. */
ec338859 2744
26e41594
AM
2745 skip = FALSE;
2746 relocate = FALSE;
ec338859 2747
c629eae0
JJ
2748 outrel.r_offset =
2749 _bfd_elf_section_offset (output_bfd, info, input_section,
2750 rel->r_offset);
2751 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2752 skip = TRUE;
0bb2d96a 2753 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2754 skip = TRUE, relocate = TRUE;
26e41594
AM
2755 outrel.r_offset += (input_section->output_section->vma
2756 + input_section->output_offset);
ec338859 2757
26e41594 2758 if (skip)
0bb2d96a 2759 memset (&outrel, 0, sizeof outrel);
26e41594 2760 else if (h != NULL
0451c93c
MS
2761 && h->dynindx != -1
2762 && (r_type == R_390_PC16
2763 || r_type == R_390_PC16DBL
befc3abb 2764 || r_type == R_390_PC32DBL
0451c93c
MS
2765 || r_type == R_390_PC32
2766 || !info->shared
8c21ca21 2767 || !SYMBOLIC_BIND (info, h)
f5385ebf 2768 || !h->def_regular))
26e41594
AM
2769 {
2770 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
27018c3f 2771 outrel.r_addend = rel->r_addend;
26e41594
AM
2772 }
2773 else
2774 {
0451c93c 2775 /* This symbol is local, or marked to become local. */
90ced0dd 2776 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS
2777 if (r_type == R_390_32)
2778 {
2779 relocate = TRUE;
2780 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
b5727d75
MS
2781 }
2782 else
2783 {
2784 long sindx;
2785
90ced0dd 2786 if (bfd_is_abs_section (sec))
b5727d75
MS
2787 sindx = 0;
2788 else if (sec == NULL || sec->owner == NULL)
2789 {
2790 bfd_set_error(bfd_error_bad_value);
2791 return FALSE;
2792 }
2793 else
2794 {
2795 asection *osec;
2796
2797 osec = sec->output_section;
2798 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM
2799 if (sindx == 0)
2800 {
2801 osec = htab->elf.text_index_section;
2802 sindx = elf_section_data (osec)->dynindx;
2803 }
2804 BFD_ASSERT (sindx != 0);
90ced0dd
MS
2805
2806 /* We are turning this relocation into one
2807 against a section symbol, so subtract out
2808 the output section's address but not the
2809 offset of the input section in the output
2810 section. */
90ced0dd 2811 outrel.r_addend -= osec->vma;
b5727d75
MS
2812 }
2813 outrel.r_info = ELF32_R_INFO (sindx, r_type);
b5727d75 2814 }
26e41594 2815 }
ec338859 2816
0451c93c
MS
2817 sreloc = elf_section_data (input_section)->sreloc;
2818 if (sreloc == NULL)
2819 abort ();
ec338859 2820
947216bf
AM
2821 loc = sreloc->contents;
2822 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 2823 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
ec338859 2824
26e41594
AM
2825 /* If this reloc is against an external symbol, we do
2826 not want to fiddle with the addend. Otherwise, we
2827 need to include the symbol value so that it becomes
2828 an addend for the dynamic reloc. */
2829 if (! relocate)
2830 continue;
2831 }
0451c93c 2832 break;
ec338859 2833
69fc87f1
MS
2834 /* Relocations for tls literal pool entries. */
2835 case R_390_TLS_IE32:
2836 if (info->shared)
2837 {
2838 Elf_Internal_Rela outrel;
2839 asection *sreloc;
2840 bfd_byte *loc;
2841
2842 outrel.r_offset = rel->r_offset
2843 + input_section->output_section->vma
2844 + input_section->output_offset;
2845 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2846 sreloc = elf_section_data (input_section)->sreloc;
2847 if (sreloc == NULL)
2848 abort ();
2849 loc = sreloc->contents;
2850 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2851 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2852 }
ae9a127f 2853 /* Fall through. */
69fc87f1
MS
2854
2855 case R_390_TLS_GD32:
2856 case R_390_TLS_GOTIE32:
2857 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2858 tls_type = GOT_UNKNOWN;
2859 if (h == NULL && local_got_offsets)
2860 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2861 else if (h != NULL)
2862 {
2863 tls_type = elf_s390_hash_entry(h)->tls_type;
2864 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2865 r_type = R_390_TLS_LE32;
2866 }
2867 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2868 r_type = R_390_TLS_IE32;
2869
2870 if (r_type == R_390_TLS_LE32)
2871 {
2872 /* This relocation gets optimized away by the local exec
2873 access optimization. */
2874 BFD_ASSERT (! unresolved_reloc);
2875 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2876 contents + rel->r_offset);
2877 continue;
2878 }
2879
f41345a7 2880 if (htab->elf.sgot == NULL)
69fc87f1
MS
2881 abort ();
2882
2883 if (h != NULL)
2884 off = h->got.offset;
2885 else
2886 {
2887 if (local_got_offsets == NULL)
2888 abort ();
2889
2890 off = local_got_offsets[r_symndx];
2891 }
2892
2893 emit_tls_relocs:
2894
2895 if ((off & 1) != 0)
2896 off &= ~1;
26e41594 2897 else
69fc87f1
MS
2898 {
2899 Elf_Internal_Rela outrel;
2900 bfd_byte *loc;
2901 int dr_type, indx;
2902
f41345a7 2903 if (htab->elf.srelgot == NULL)
69fc87f1
MS
2904 abort ();
2905
f41345a7
AK
2906 outrel.r_offset = (htab->elf.sgot->output_section->vma
2907 + htab->elf.sgot->output_offset + off);
69fc87f1
MS
2908
2909 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2910 if (r_type == R_390_TLS_GD32)
2911 dr_type = R_390_TLS_DTPMOD;
2912 else
2913 dr_type = R_390_TLS_TPOFF;
2914 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2915 outrel.r_addend = relocation - dtpoff_base (info);
2916 else
2917 outrel.r_addend = 0;
2918 outrel.r_info = ELF32_R_INFO (indx, dr_type);
f41345a7
AK
2919 loc = htab->elf.srelgot->contents;
2920 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS
2921 * sizeof (Elf32_External_Rela);
2922 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2923
2924 if (r_type == R_390_TLS_GD32)
2925 {
2926 if (indx == 0)
2927 {
26e41594 2928 BFD_ASSERT (! unresolved_reloc);
69fc87f1
MS
2929 bfd_put_32 (output_bfd,
2930 relocation - dtpoff_base (info),
f41345a7 2931 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS
2932 }
2933 else
2934 {
2935 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
2936 outrel.r_offset += GOT_ENTRY_SIZE;
2937 outrel.r_addend = 0;
f41345a7 2938 htab->elf.srelgot->reloc_count++;
69fc87f1
MS
2939 loc += sizeof (Elf32_External_Rela);
2940 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2941 }
2942 }
2943
2944 if (h != NULL)
2945 h->got.offset |= 1;
2946 else
2947 local_got_offsets[r_symndx] |= 1;
2948 }
2949
2950 if (off >= (bfd_vma) -2)
2951 abort ();
2952 if (r_type == ELF32_R_TYPE (rel->r_info))
2953 {
f41345a7 2954 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2955 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
f41345a7 2956 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS
2957 unresolved_reloc = FALSE;
2958 }
2959 else
2960 {
f41345a7 2961 bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS
2962 contents + rel->r_offset);
2963 continue;
2964 }
2965 break;
2966
2967 case R_390_TLS_GOTIE12:
bd1ea41b 2968 case R_390_TLS_GOTIE20:
69fc87f1
MS
2969 case R_390_TLS_IEENT:
2970 if (h == NULL)
2971 {
2972 if (local_got_offsets == NULL)
2973 abort();
2974 off = local_got_offsets[r_symndx];
2975 if (info->shared)
2976 goto emit_tls_relocs;
2977 }
2978 else
2979 {
2980 off = h->got.offset;
2981 tls_type = elf_s390_hash_entry(h)->tls_type;
2982 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
2983 goto emit_tls_relocs;
2984 }
2985
f41345a7 2986 if (htab->elf.sgot == NULL)
69fc87f1
MS
2987 abort ();
2988
2989 BFD_ASSERT (! unresolved_reloc);
2990 bfd_put_32 (output_bfd, -tpoff (info, relocation),
f41345a7
AK
2991 htab->elf.sgot->contents + off);
2992 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 2993 if (r_type == R_390_TLS_IEENT)
f41345a7 2994 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS
2995 unresolved_reloc = FALSE;
2996 break;
2997
2998 case R_390_TLS_LDM32:
2999 if (! info->shared)
3000 /* The literal pool entry this relocation refers to gets ignored
3001 by the optimized code of the local exec model. Do nothing
3002 and the value will turn out zero. */
3003 continue;
3004
f41345a7 3005 if (htab->elf.sgot == NULL)
69fc87f1
MS
3006 abort ();
3007
3008 off = htab->tls_ldm_got.offset;
3009 if (off & 1)
3010 off &= ~1;
3011 else
3012 {
3013 Elf_Internal_Rela outrel;
3014 bfd_byte *loc;
3015
f41345a7 3016 if (htab->elf.srelgot == NULL)
69fc87f1
MS
3017 abort ();
3018
f41345a7
AK
3019 outrel.r_offset = (htab->elf.sgot->output_section->vma
3020 + htab->elf.sgot->output_offset + off);
69fc87f1
MS
3021
3022 bfd_put_32 (output_bfd, 0,
f41345a7 3023 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS
3024 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
3025 outrel.r_addend = 0;
f41345a7
AK
3026 loc = htab->elf.srelgot->contents;
3027 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS
3028 * sizeof (Elf32_External_Rela);
3029 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3030 htab->tls_ldm_got.offset |= 1;
3031 }
f41345a7 3032 relocation = htab->elf.sgot->output_offset + off;
26e41594 3033 unresolved_reloc = FALSE;
69fc87f1
MS
3034 break;
3035
3036 case R_390_TLS_LE32:
3037 if (info->shared)
3038 {
3039 /* Linking a shared library with non-fpic code requires
3040 a R_390_TLS_TPOFF relocation. */
3041 Elf_Internal_Rela outrel;
3042 asection *sreloc;
3043 bfd_byte *loc;
3044 int indx;
3045
3046 outrel.r_offset = rel->r_offset
3047 + input_section->output_section->vma
3048 + input_section->output_offset;
3049 if (h != NULL && h->dynindx != -1)
3050 indx = h->dynindx;
3051 else
3052 indx = 0;
3053 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
3054 if (indx == 0)
3055 outrel.r_addend = relocation - dtpoff_base (info);
3056 else
3057 outrel.r_addend = 0;
3058 sreloc = elf_section_data (input_section)->sreloc;
3059 if (sreloc == NULL)
3060 abort ();
3061 loc = sreloc->contents;
3062 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3063 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3064 }
3065 else
3066 {
3067 BFD_ASSERT (! unresolved_reloc);
3068 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3069 contents + rel->r_offset);
3070 }
3071 continue;
3072
3073 case R_390_TLS_LDO32:
de8bee76 3074 if (info->shared || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS
3075 relocation -= dtpoff_base (info);
3076 else
3077 /* When converting LDO to LE, we must negate. */
3078 relocation = -tpoff (info, relocation);
3079 break;
3080
3081 /* Relocations for tls instructions. */
3082 case R_390_TLS_LOAD:
3083 case R_390_TLS_GDCALL:
3084 case R_390_TLS_LDCALL:
3085 tls_type = GOT_UNKNOWN;
3086 if (h == NULL && local_got_offsets)
3087 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3088 else if (h != NULL)
3089 tls_type = elf_s390_hash_entry(h)->tls_type;
3090
3091 if (tls_type == GOT_TLS_GD)
3092 continue;
3093
3094 if (r_type == R_390_TLS_LOAD)
3095 {
3096 if (!info->shared && (h == NULL || h->dynindx == -1))
3097 {
3098 /* IE->LE transition. Four valid cases:
3099 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
3100 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
3101 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
3102 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3103 unsigned int insn, ry;
3104
3105 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3106 ry = 0;
3107 if ((insn & 0xff00f000) == 0x58000000)
3108 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
3109 ry = (insn & 0x000f0000);
3110 else if ((insn & 0xff0f0000) == 0x58000000)
3111 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
3112 ry = (insn & 0x0000f000) << 4;
3113 else if ((insn & 0xff00f000) == 0x5800c000)
3114 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
3115 ry = (insn & 0x000f0000);
3116 else if ((insn & 0xff0f0000) == 0x580c0000)
3117 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3118 ry = (insn & 0x0000f000) << 4;
3119 else
3120 invalid_tls_insn (input_bfd, input_section, rel);
3121 insn = 0x18000700 | (insn & 0x00f00000) | ry;
3122 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3123 }
3124 }
3125 else if (r_type == R_390_TLS_GDCALL)
3126 {
3127 unsigned int insn;
3128
3129 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3130 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK
3131 (insn & 0xffff0000) != 0xc0e50000 &&
3132 (insn & 0xff000000) != 0x0d000000)
69fc87f1
MS
3133 invalid_tls_insn (input_bfd, input_section, rel);
3134 if (!info->shared && (h == NULL || h->dynindx == -1))
77df2968 3135 {
d0ddfe27
AK
3136 if ((insn & 0xff000000) == 0x0d000000)
3137 {
3138 /* GD->LE transition.
3139 basr rx, ry -> nopr r7 */
3140 insn = 0x07070000 | (insn & 0xffff);
3141 }
3142 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS
3143 {
3144 /* GD->LE transition.
3145 bas %r14,0(%rx,%r13) -> bc 0,0 */
3146 insn = 0x47000000;
3147 }
3148 else
3149 {
3150 /* GD->LE transition.
d0ddfe27 3151 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
77df2968
MS
3152 insn = 0xc0040000;
3153 bfd_put_16 (output_bfd, 0x0000,
3154 contents + rel->r_offset + 4);
3155 }
3156 }
69fc87f1 3157 else
77df2968 3158 {
d0ddfe27
AK
3159 /* If basr is used in the pic case to invoke
3160 _tls_get_offset, something went wrong before. */
3161 if ((insn & 0xff000000) == 0x0d000000)
3162 invalid_tls_insn (input_bfd, input_section, rel);
3163
77df2968
MS
3164 if ((insn & 0xff000000) == 0x4d000000)
3165 {
3166 /* GD->IE transition.
3167 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3168 insn = 0x5822c000;
3169 }
3170 else
3171 {
3172 /* GD->IE transition.
3173 brasl %r14,__tls_get_addr@plt ->
3174 l %r2,0(%r2,%r12) ; bcr 0,0 */
3175 insn = 0x5822c000;
3176 bfd_put_16 (output_bfd, 0x0700,
3177 contents + rel->r_offset + 4);
3178 }
3179 }
69fc87f1
MS
3180 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3181 }
3182 else if (r_type == R_390_TLS_LDCALL)
3183 {
3184 if (!info->shared)
3185 {
3186 unsigned int insn;
3187
3188 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3189 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK
3190 (insn & 0xffff0000) != 0xc0e50000 &&
3191 (insn & 0xff000000) != 0x0d000000)
69fc87f1 3192 invalid_tls_insn (input_bfd, input_section, rel);
d0ddfe27
AK
3193
3194 if ((insn & 0xff000000) == 0x0d000000)
3195 {
3196 /* LD->LE transition.
3197 basr rx, ry -> nopr r7 */
3198 insn = 0x07070000 | (insn & 0xffff);
3199 }
3200 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS
3201 {
3202 /* LD->LE transition.
3203 bas %r14,0(%rx,%r13) -> bc 0,0 */
3204 insn = 0x47000000;
3205 }
3206 else
3207 {
3208 /* LD->LE transition.
d0ddfe27 3209 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
77df2968
MS
3210 insn = 0xc0040000;
3211 bfd_put_16 (output_bfd, 0x0000,
3212 contents + rel->r_offset + 4);
3213 }
69fc87f1
MS
3214 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3215 }
3216 }
3217 continue;
3218
0451c93c
MS
3219 default:
3220 break;
3221 }
ec338859 3222
239e1f3a
AM
3223 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3224 because such sections are not SEC_ALLOC and thus ld.so will
3225 not process them. */
0451c93c 3226 if (unresolved_reloc
239e1f3a 3227 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM
3228 && h->def_dynamic)
3229 && _bfd_elf_section_offset (output_bfd, info, input_section,
3230 rel->r_offset) != (bfd_vma) -1)
0451c93c 3231 (*_bfd_error_handler)
843fe662 3232 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM
3233 input_bfd,
3234 input_section,
0451c93c 3235 (long) rel->r_offset,
843fe662 3236 howto->name,
0451c93c 3237 h->root.root.string);
ec338859 3238
470b557a
AK
3239 do_relocation:
3240
bd1ea41b
MS
3241 if (r_type == R_390_20
3242 || r_type == R_390_GOT20
3243 || r_type == R_390_GOTPLT20
3244 || r_type == R_390_TLS_GOTIE20)
3245 {
3246 relocation += rel->r_addend;
3247 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3248 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3249 contents, rel->r_offset,
3250 relocation, 0);
3251 }
3252 else
3253 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3254 contents, rel->r_offset,
3255 relocation, rel->r_addend);
ec338859 3256
a85d7ed0
NC
3257 if (r != bfd_reloc_ok)
3258 {
0451c93c 3259 const char *name;
ec338859 3260
0451c93c
MS
3261 if (h != NULL)
3262 name = h->root.root.string;
3263 else
a85d7ed0 3264 {
0451c93c
MS
3265 name = bfd_elf_string_from_elf_section (input_bfd,
3266 symtab_hdr->sh_link,
3267 sym->st_name);
3268 if (name == NULL)
b34976b6 3269 return FALSE;
0451c93c
MS
3270 if (*name == '\0')
3271 name = bfd_section_name (input_bfd, sec);
3272 }
ec338859 3273
0451c93c
MS
3274 if (r == bfd_reloc_overflow)
3275 {
ec338859 3276
0451c93c 3277 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L
3278 (info, (h ? &h->root : NULL), name, howto->name,
3279 (bfd_vma) 0, input_bfd, input_section,
3280 rel->r_offset)))
b34976b6 3281 return FALSE;
0451c93c
MS
3282 }
3283 else
3284 {
3285 (*_bfd_error_handler)
d003868e
AM
3286 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3287 input_bfd, input_section,
0451c93c 3288 (long) rel->r_offset, name, (int) r);
b34976b6 3289 return FALSE;
a85d7ed0
NC
3290 }
3291 }
3292 }
ec338859 3293
b34976b6 3294 return TRUE;
a85d7ed0
NC
3295}
3296
470b557a
AK
3297/* Generate the PLT slots together with the dynamic relocations needed
3298 for IFUNC symbols. */
3299
3300static void
3301elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3302 struct bfd_link_info *info,
3303 struct elf_link_hash_entry *h,
3304 struct elf_s390_link_hash_table *htab,
3305 bfd_vma iplt_offset,
3306 bfd_vma resolver_address)
3307{
3308 bfd_vma iplt_index;
3309 bfd_vma got_offset;
3310 bfd_vma igotiplt_offset;
3311 Elf_Internal_Rela rela;
3312 bfd_byte *loc;
3313 asection *plt, *gotplt, *relplt;
3314 bfd_vma relative_offset;
3315
3316 if (htab->elf.iplt == NULL
3317 || htab->elf.igotplt == NULL
3318 || htab->elf.irelplt == NULL)
3319 abort ();
3320
3321 gotplt = htab->elf.igotplt;
3322 relplt = htab->elf.irelplt;
3323
3324 /* Index of the PLT slot within iplt section. */
3325 iplt_index = iplt_offset / PLT_ENTRY_SIZE;
3326 plt = htab->elf.iplt;
3327 /* Offset into the igot.plt section. */
3328 igotiplt_offset = iplt_index * GOT_ENTRY_SIZE;
3329 /* Offset into the got section. */
3330 got_offset = igotiplt_offset + gotplt->output_offset;
3331
3332 /* S390 uses halfwords for relative branch calc! */
3333 relative_offset = - (plt->output_offset +
3334 (PLT_ENTRY_SIZE * iplt_index) + 18) / 2;
3335/* If offset is > 32768, branch to a previous branch
3336 390 can only handle +-64 K jumps. */
3337 if ( -32768 > (int) relative_offset )
3338 relative_offset
3339 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3340
3341 /* Fill in the entry in the procedure linkage table. */
3342 if (!info->shared)
3343 {
3344 memcpy (plt->contents + iplt_offset, elf_s390_plt_entry,
3345 PLT_ENTRY_SIZE);
3346
3347 /* Adjust jump to the first plt entry. */
3348 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3349 plt->contents + iplt_offset + 20);
3350
3351 /* Push the GOT offset field. */
3352 bfd_put_32 (output_bfd,
3353 (gotplt->output_section->vma
3354 + got_offset),
3355 plt->contents + iplt_offset + 24);
3356 }
3357 else if (got_offset < 4096)
3358 {
3359 /* The GOT offset is small enough to be used directly as
3360 displacement. */
3361 memcpy (plt->contents + iplt_offset,
3362 elf_s390_plt_pic12_entry,
3363 PLT_ENTRY_SIZE);
3364
3365 /* Put in the GOT offset as displacement value. The 0xc000
3366 value comes from the first word of the plt entry. Look
3367 at the elf_s390_plt_pic16_entry content. */
3368 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3369 plt->contents + iplt_offset + 2);
3370
3371 /* Adjust the jump to the first plt entry. */
3372 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3373 plt->contents + iplt_offset + 20);
3374 }
3375 else if (got_offset < 32768)
3376 {
3377 /* The GOT offset is too big for a displacement but small
3378 enough to be a signed 16 bit immediate value as it can be
3379 used in an lhi instruction. */
3380 memcpy (plt->contents + iplt_offset,
3381 elf_s390_plt_pic16_entry,
3382 PLT_ENTRY_SIZE);
3383
3384 /* Put in the GOT offset for the lhi instruction. */
3385 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3386 plt->contents + iplt_offset + 2);
3387
3388 /* Adjust the jump to the first plt entry. */
3389 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3390 plt->contents + iplt_offset + 20);
3391 }
3392 else
3393 {
3394 memcpy (plt->contents + iplt_offset,
3395 elf_s390_plt_pic_entry,
3396 PLT_ENTRY_SIZE);
3397
3398 /* Adjust the jump to the first plt entry. */
3399 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3400 plt->contents + iplt_offset + 20);
3401
3402 /* Push the GOT offset field. */
3403 bfd_put_32 (output_bfd, got_offset,
3404 plt->contents + iplt_offset + 24);
3405 }
3406 /* Insert offset into reloc. table here. */
3407 bfd_put_32 (output_bfd, relplt->output_offset +
3408 iplt_index * RELA_ENTRY_SIZE,
3409 plt->contents + iplt_offset + 28);
3410
3411 /* Fill in the entry in the global offset table.
3412 Points to instruction after GOT offset. */
3413 bfd_put_32 (output_bfd,
3414 (plt->output_section->vma
3415 + plt->output_offset
3416 + iplt_offset
3417 + 12),
3418 gotplt->contents + igotiplt_offset);
3419
3420 /* Fill in the entry in the .rela.plt section. */
3421 rela.r_offset = gotplt->output_section->vma + got_offset;
3422
3423 if (!h
3424 || h->dynindx == -1
3425 || ((info->executable
3426 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3427 && h->def_regular))
3428 {
3429 /* The symbol can be locally resolved. */
3430 rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
3431 rela.r_addend = resolver_address;
3432 }
3433 else
3434 {
3435 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3436 rela.r_addend = 0;
3437 }
3438
3439 loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE;
3440 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3441}
3442
a85d7ed0
NC
3443/* Finish up dynamic symbol handling. We set the contents of various
3444 dynamic sections here. */
3445
b34976b6 3446static bfd_boolean
2c3fc389
NC
3447elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3448 struct bfd_link_info *info,
3449 struct elf_link_hash_entry *h,
3450 Elf_Internal_Sym *sym)
a85d7ed0 3451{
0451c93c 3452 struct elf_s390_link_hash_table *htab;
470b557a 3453 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
ec338859 3454
0451c93c 3455 htab = elf_s390_hash_table (info);
ec338859 3456
a85d7ed0
NC
3457 if (h->plt.offset != (bfd_vma) -1)
3458 {
0451c93c
MS
3459 bfd_vma plt_index;
3460 bfd_vma got_offset;
a85d7ed0 3461 Elf_Internal_Rela rela;
947216bf 3462 bfd_byte *loc;
a85d7ed0 3463 bfd_vma relative_offset;
ec338859 3464
a85d7ed0 3465 /* This symbol has an entry in the procedure linkage table. Set
26e41594 3466 it up. */
470b557a 3467 if (s390_is_ifunc_symbol_p (h))
0451c93c 3468 {
470b557a
AK
3469 /* If we can resolve the IFUNC symbol locally we generate an
3470 IRELATIVE reloc. */
3471 elf_s390_finish_ifunc_symbol (output_bfd, info, h, htab, h->plt.offset,
3472 eh->ifunc_resolver_address +
3473 eh->ifunc_resolver_section->output_offset +
3474 eh->ifunc_resolver_section->output_section->vma);
3475 /* Fallthrough. Handling of explicit GOT slots of IFUNC
3476 symbols is below. */
0451c93c 3477 }
a85d7ed0 3478 else
0451c93c 3479 {
470b557a
AK
3480 if (h->dynindx == -1
3481 || htab->elf.splt == NULL
3482 || htab->elf.sgotplt == NULL
3483 || htab->elf.srelplt == NULL)
3484 abort ();
9aa17453 3485
470b557a
AK
3486 /* Calc. index no.
3487 Current offset - size first entry / entry size. */
3488 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9aa17453 3489
470b557a
AK
3490 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3491 addr & GOT addr. */
3492 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3493
470b557a
AK
3494 /* S390 uses halfwords for relative branch calc! */
3495 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3496 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3497 /* If offset is > 32768, branch to a previous branch
3498 390 can only handle +-64 K jumps. */
3499 if ( -32768 > (int) relative_offset )
3500 relative_offset
3501 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
ec338859 3502
470b557a
AK
3503 /* Fill in the entry in the procedure linkage table. */
3504 if (!info->shared)
3505 {
3506 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry,
3507 PLT_ENTRY_SIZE);
3508
3509 /* Adjust jump to the first plt entry. */
3510 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3511 htab->elf.splt->contents + h->plt.offset + 20);
3512
3513 /* Push the GOT offset field. */
3514 bfd_put_32 (output_bfd,
3515 (htab->elf.sgotplt->output_section->vma
3516 + htab->elf.sgotplt->output_offset
3517 + got_offset),
3518 htab->elf.splt->contents + h->plt.offset + 24);
3519 }
3520 else if (got_offset < 4096)
3521 {
3522 /* The GOT offset is small enough to be used directly as
3523 displacement. */
3524 memcpy (htab->elf.splt->contents + h->plt.offset,
3525 elf_s390_plt_pic12_entry,
3526 PLT_ENTRY_SIZE);
3527
3528 /* Put in the GOT offset as displacement value. The 0xc000
3529 value comes from the first word of the plt entry. Look
3530 at the elf_s390_plt_pic16_entry content. */
3531 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3532 htab->elf.splt->contents + h->plt.offset + 2);
3533
3534 /* Adjust the jump to the first plt entry. */
3535 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3536 htab->elf.splt->contents + h->plt.offset + 20);
3537 }
3538 else if (got_offset < 32768)
3539 {
3540 /* The GOT offset is too big for a displacement but small
3541 enough to be a signed 16 bit immediate value as it can be
3542 used in an lhi instruction. */
3543 memcpy (htab->elf.splt->contents + h->plt.offset,
3544 elf_s390_plt_pic16_entry,
3545 PLT_ENTRY_SIZE);
3546
3547 /* Put in the GOT offset for the lhi instruction. */
3548 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3549 htab->elf.splt->contents + h->plt.offset + 2);
3550
3551 /* Adjust the jump to the first plt entry. */
3552 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3553 htab->elf.splt->contents + h->plt.offset + 20);
3554 }
3555 else
3556 {
3557 memcpy (htab->elf.splt->contents + h->plt.offset,
3558 elf_s390_plt_pic_entry,
3559 PLT_ENTRY_SIZE);
3560
3561 /* Adjust the jump to the first plt entry. */
3562 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3563 htab->elf.splt->contents + h->plt.offset + 20);
3564
3565 /* Push the GOT offset field. */
3566 bfd_put_32 (output_bfd, got_offset,
3567 htab->elf.splt->contents + h->plt.offset + 24);
3568 }
3569 /* Insert offset into reloc. table here. */
3570 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3571 htab->elf.splt->contents + h->plt.offset + 28);
3572
3573 /* Fill in the entry in the global offset table.
3574 Points to instruction after GOT offset. */
3575 bfd_put_32 (output_bfd,
3576 (htab->elf.splt->output_section->vma
3577 + htab->elf.splt->output_offset
3578 + h->plt.offset
3579 + 12),
3580 htab->elf.sgotplt->contents + got_offset);
3581
3582 /* Fill in the entry in the .rela.plt section. */
3583 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3584 + htab->elf.sgotplt->output_offset
3585 + got_offset);
3586 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3587 rela.r_addend = 0;
3588 loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3589 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3590
3591 if (!h->def_regular)
3592 {
3593 /* Mark the symbol as undefined, rather than as defined in
3594 the .plt section. Leave the value alone. This is a clue
3595 for the dynamic linker, to make function pointer
3596 comparisons work between an application and shared
3597 library. */
3598 sym->st_shndx = SHN_UNDEF;
3599 }
a85d7ed0
NC
3600 }
3601 }
ec338859 3602
69fc87f1
MS
3603 if (h->got.offset != (bfd_vma) -1
3604 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3605 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3606 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3607 {
a85d7ed0 3608 Elf_Internal_Rela rela;
947216bf 3609 bfd_byte *loc;
a85d7ed0
NC
3610
3611 /* This symbol has an entry in the global offset table. Set it
26e41594 3612 up. */
a85d7ed0 3613
f41345a7 3614 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3615 abort ();
a85d7ed0 3616
f41345a7
AK
3617 rela.r_offset = (htab->elf.sgot->output_section->vma
3618 + htab->elf.sgot->output_offset
dc810e39 3619 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0
NC
3620
3621 /* If this is a static link, or it is a -Bsymbolic link and the
3622 symbol is defined locally or was forced to be local because
3623 of a version file, we just want to emit a RELATIVE reloc.
3624 The entry in the global offset table will already have been
3625 initialized in the relocate_section function. */
470b557a
AK
3626 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3627 {
3628 if (info->shared)
3629 {
3630 /* An explicit GOT slot usage needs GLOB_DAT. If the
3631 symbol references local the implicit got.iplt slot
3632 will be used and the IRELATIVE reloc has been created
3633 above. */
3634 goto do_glob_dat;
3635 }
3636 else
3637 {
3638 /* For non-shared objects explicit GOT slots must be
3639 filled with the PLT slot address for pointer
3640 equality reasons. */
3641 bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma
3642 + htab->elf.iplt->output_offset
3643 + h->plt.offset),
3644 htab->elf.sgot->contents + h->got.offset);
3645 return TRUE;
3646 }
3647 }
3648 else if (info->shared
8c21ca21 3649 && SYMBOL_REFERENCES_LOCAL (info, h))
0451c93c 3650 {
470b557a
AK
3651 /* If this is a static link, or it is a -Bsymbolic link and
3652 the symbol is defined locally or was forced to be local
3653 because of a version file, we just want to emit a
3654 RELATIVE reloc. The entry in the global offset table
3655 will already have been initialized in the
3656 relocate_section function. */
8c21ca21
AK
3657 if (!h->def_regular)
3658 return FALSE;
0451c93c
MS
3659 BFD_ASSERT((h->got.offset & 1) != 0);
3660 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3661 rela.r_addend = (h->root.u.def.value
26e41594
AM
3662 + h->root.u.def.section->output_section->vma
3663 + h->root.u.def.section->output_offset);
3664 }
a85d7ed0
NC
3665 else
3666 {
3667 BFD_ASSERT((h->got.offset & 1) == 0);
470b557a 3668 do_glob_dat:
f41345a7 3669 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3670 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
26e41594
AM
3671 rela.r_addend = 0;
3672 }
a85d7ed0 3673
f41345a7
AK
3674 loc = htab->elf.srelgot->contents;
3675 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3676 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC
3677 }
3678
f5385ebf 3679 if (h->needs_copy)
a85d7ed0 3680 {
a85d7ed0 3681 Elf_Internal_Rela rela;
947216bf 3682 bfd_byte *loc;
a85d7ed0
NC
3683
3684 /* This symbols needs a copy reloc. Set it up. */
3685
0451c93c
MS
3686 if (h->dynindx == -1
3687 || (h->root.type != bfd_link_hash_defined
3688 && h->root.type != bfd_link_hash_defweak)
3689 || htab->srelbss == NULL)
3690 abort ();
a85d7ed0
NC
3691
3692 rela.r_offset = (h->root.u.def.value
3693 + h->root.u.def.section->output_section->vma
3694 + h->root.u.def.section->output_offset);
3695 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3696 rela.r_addend = 0;
947216bf
AM
3697 loc = htab->srelbss->contents;
3698 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3699 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC
3700 }
3701
3702 /* Mark some specially defined symbols as absolute. */
9637f6ef 3703 if (h == htab->elf.hdynamic
22edb2f1
RS
3704 || h == htab->elf.hgot
3705 || h == htab->elf.hplt)
a85d7ed0
NC
3706 sym->st_shndx = SHN_ABS;
3707
b34976b6 3708 return TRUE;
a85d7ed0
NC
3709}
3710
0451c93c
MS
3711/* Used to decide how to sort relocs in an optimal manner for the
3712 dynamic linker, before writing them out. */
3713
3714static enum elf_reloc_type_class
2c3fc389 3715elf_s390_reloc_type_class (const Elf_Internal_Rela *rela)
0451c93c
MS
3716{
3717 switch ((int) ELF32_R_TYPE (rela->r_info))
3718 {
3719 case R_390_RELATIVE:
3720 return reloc_class_relative;
3721 case R_390_JMP_SLOT:
3722 return reloc_class_plt;
3723 case R_390_COPY:
3724 return reloc_class_copy;
3725 default:
3726 return reloc_class_normal;
3727 }
3728}
3729
a85d7ed0
NC
3730/* Finish up the dynamic sections. */
3731
b34976b6 3732static bfd_boolean
2c3fc389
NC
3733elf_s390_finish_dynamic_sections (bfd *output_bfd,
3734 struct bfd_link_info *info)
a85d7ed0 3735{
0451c93c 3736 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC
3737 bfd *dynobj;
3738 asection *sdyn;
470b557a
AK
3739 bfd *ibfd;
3740 unsigned int i;
a85d7ed0 3741
0451c93c
MS
3742 htab = elf_s390_hash_table (info);
3743 dynobj = htab->elf.dynobj;
3d4d4302 3744 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3745
0451c93c 3746 if (htab->elf.dynamic_sections_created)
a85d7ed0 3747 {
a85d7ed0
NC
3748 Elf32_External_Dyn *dyncon, *dynconend;
3749
f41345a7 3750 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3751 abort ();
a85d7ed0
NC
3752
3753 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 3754 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC
3755 for (; dyncon < dynconend; dyncon++)
3756 {
3757 Elf_Internal_Dyn dyn;
a85d7ed0 3758 asection *s;
ec338859 3759
a85d7ed0 3760 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3761
a85d7ed0
NC
3762 switch (dyn.d_tag)
3763 {
3764 default:
0451c93c 3765 continue;
ec338859 3766
a85d7ed0 3767 case DT_PLTGOT:
f41345a7 3768 dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma;
0451c93c 3769 break;
ec338859 3770
a85d7ed0 3771 case DT_JMPREL:
f41345a7 3772 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
a85d7ed0
NC
3773 break;
3774
3775 case DT_PLTRELSZ:
f41345a7 3776 s = htab->elf.srelplt->output_section;
eea6121a 3777 dyn.d_un.d_val = s->size;
a85d7ed0
NC
3778 break;
3779 }
0451c93c
MS
3780
3781 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC
3782 }
3783
3784 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3785 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0 3786 {
f41345a7 3787 memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
26e41594 3788 if (info->shared)
0451c93c 3789 {
f41345a7 3790 memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry,
9aa17453
AK
3791 PLT_FIRST_ENTRY_SIZE);
3792 }
26e41594 3793 else
9aa17453 3794 {
f41345a7 3795 memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry,
9aa17453 3796 PLT_FIRST_ENTRY_SIZE);
26e41594 3797 bfd_put_32 (output_bfd,
f41345a7
AK
3798 htab->elf.sgotplt->output_section->vma
3799 + htab->elf.sgotplt->output_offset,
3800 htab->elf.splt->contents + 24);
26e41594 3801 }
f41345a7 3802 elf_section_data (htab->elf.splt->output_section)
0451c93c 3803 ->this_hdr.sh_entsize = 4;
a85d7ed0
NC
3804 }
3805
3806 }
3807
f41345a7 3808 if (htab->elf.sgotplt)
a85d7ed0 3809 {
0451c93c 3810 /* Fill in the first three entries in the global offset table. */
f41345a7 3811 if (htab->elf.sgotplt->size > 0)
0451c93c
MS
3812 {
3813 bfd_put_32 (output_bfd,
3814 (sdyn == NULL ? (bfd_vma) 0
3815 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3816 htab->elf.sgotplt->contents);
0451c93c 3817 /* One entry for shared object struct ptr. */
f41345a7 3818 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4);
0451c93c 3819 /* One entry for _dl_runtime_resolve. */
f41345a7 3820 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3821 }
a85d7ed0 3822
f41345a7 3823 elf_section_data (htab->elf.sgotplt->output_section)
0451c93c
MS
3824 ->this_hdr.sh_entsize = 4;
3825 }
470b557a
AK
3826 /* Finish dynamic symbol for local IFUNC symbols. */
3827 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3828 {
3829 struct plt_entry *local_plt;
3830 Elf_Internal_Sym *isym;
3831 Elf_Internal_Shdr *symtab_hdr;
3832
3833 symtab_hdr = &elf_symtab_hdr (ibfd);
3834
3835 local_plt = elf_s390_local_plt (ibfd);
3836 if (local_plt != NULL)
3837 for (i = 0; i < symtab_hdr->sh_info; i++)
3838 {
3839 if (local_plt[i].plt.offset != (bfd_vma) -1)
3840 {
3841 asection *sec = local_plt[i].sec;
3842 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3843 if (isym == NULL)
3844 return FALSE;
3845
3846 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3847 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3848 local_plt[i].plt.offset,
3849 isym->st_value
3850 + sec->output_section->vma
3851 + sec->output_offset);
3852
3853 }
3854 }
3855 }
b34976b6 3856 return TRUE;
a85d7ed0
NC
3857}
3858
b34976b6 3859static bfd_boolean
2c3fc389 3860elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note)
979f4a38
NC
3861{
3862 int offset;
eea6121a 3863 unsigned int size;
979f4a38
NC
3864
3865 switch (note->descsz)
3866 {
3867 default:
b34976b6 3868 return FALSE;
979f4a38
NC
3869
3870 case 224: /* S/390 Linux. */
3871 /* pr_cursig */
228e534f 3872 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
979f4a38
NC
3873
3874 /* pr_pid */
228e534f 3875 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
979f4a38
NC
3876
3877 /* pr_reg */
3878 offset = 72;
eea6121a 3879 size = 144;
979f4a38
NC
3880 break;
3881 }
3882
3883 /* Make a ".reg/999" section. */
3884 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 3885 size, note->descpos + offset);
979f4a38
NC
3886}
3887
4c45e5c9
JJ
3888/* Return address for Ith PLT stub in section PLT, for relocation REL
3889 or (bfd_vma) -1 if it should not be included. */
3890
3891static bfd_vma
3892elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3893 const arelent *rel ATTRIBUTE_UNUSED)
3894{
3895 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3896}
3897
55786da2
AK
3898static bfd_boolean
3899elf32_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3900{
3901 elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
3902 return TRUE;
3903}
3904
4c45e5c9 3905
a85d7ed0
NC
3906#define TARGET_BIG_SYM bfd_elf32_s390_vec
3907#define TARGET_BIG_NAME "elf32-s390"
3908#define ELF_ARCH bfd_arch_s390
ae95ffa6 3909#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC
3910#define ELF_MACHINE_CODE EM_S390
3911#define ELF_MACHINE_ALT1 EM_S390_OLD
3912#define ELF_MAXPAGESIZE 0x1000
3913
3914#define elf_backend_can_gc_sections 1
51b64d56 3915#define elf_backend_can_refcount 1
a85d7ed0
NC
3916#define elf_backend_want_got_plt 1
3917#define elf_backend_plt_readonly 1
3918#define elf_backend_want_plt_sym 0
3919#define elf_backend_got_header_size 12
b491616a 3920#define elf_backend_rela_normal 1
a85d7ed0 3921
26e41594 3922#define elf_info_to_howto elf_s390_info_to_howto
a85d7ed0 3923
a85d7ed0
NC
3924#define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
3925#define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
3926#define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
157090f7 3927#define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
a85d7ed0 3928
55786da2
AK
3929#define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
3930
a85d7ed0 3931#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
26e41594 3932#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c
MS
3933#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3934#define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
a85d7ed0
NC
3935#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3936#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
26e41594
AM
3937#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3938#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
0451c93c 3939#define elf_backend_reloc_type_class elf_s390_reloc_type_class
26e41594 3940#define elf_backend_relocate_section elf_s390_relocate_section
a85d7ed0 3941#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 3942#define elf_backend_init_index_section _bfd_elf_init_1_index_section
29c2fb7c 3943#define elf_backend_reloc_type_class elf_s390_reloc_type_class
979f4a38 3944#define elf_backend_grok_prstatus elf_s390_grok_prstatus
4c45e5c9 3945#define elf_backend_plt_sym_val elf_s390_plt_sym_val
470b557a 3946#define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
a85d7ed0 3947
69fc87f1 3948#define bfd_elf32_mkobject elf_s390_mkobject
26e41594 3949#define elf_backend_object_p elf_s390_object_p
a85d7ed0
NC
3950
3951#include "elf32-target.h"
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