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Run add-symbol test on mips
[deliverable/binutils-gdb.git] / bfd / elf32-s390.c
CommitLineData
a85d7ed0 1/* IBM S/390-specific support for 32-bit ELF
b90efa5b 2 Copyright (C) 2000-2015 Free Software Foundation, Inc.
a85d7ed0
NC		 3 Contributed by Carl B. Pedersen and Martin Schwidefsky.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
a85d7ed0
NC		 10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
3e110533 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
53e09e0a 20 02110-1301, USA. */
a85d7ed0 21
a85d7ed0 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
a85d7ed0
NC		 24#include "bfdlink.h"
25#include "libbfd.h"
26#include "elf-bfd.h"
a85d7ed0
NC		 27#include "elf/s390.h"
28
2c3fc389
NC		 29static bfd_reloc_status_type
30s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
31 asection *, bfd *, char **);
32static bfd_reloc_status_type
33s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
34 asection *, bfd *, char **);
35
a85d7ed0
NC		 36/* The relocation "howto" table. */
37
38static reloc_howto_type elf_howto_table[] =
39{
40 HOWTO (R_390_NONE, /* type */
41 0, /* rightshift */
6346d5ca 42 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
a85d7ed0 43 0, /* bitsize */
b34976b6 44 FALSE, /* pc_relative */
a85d7ed0
NC		 45 0, /* bitpos */
46 complain_overflow_dont, /* complain_on_overflow */
47 bfd_elf_generic_reloc, /* special_function */
48 "R_390_NONE", /* name */
b34976b6 49 FALSE, /* partial_inplace */
a85d7ed0
NC		 50 0, /* src_mask */
51 0, /* dst_mask */
b34976b6
AM		 52 FALSE), /* pcrel_offset */
53
5236c819
MS		 54 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
55 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
56 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
57 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
58 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
59 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
60 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
61 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
62 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
63 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
15f8604d 64 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 65 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
66 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
67 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
68 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
69 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
70 HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
71 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
72 HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
73 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
74 HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
75 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
76 HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
77 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
78 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
79 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
80 HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
81 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
82 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
83 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
84 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
85 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
86 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
87 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
88 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
89 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
90 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
91 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
92 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
93 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
94 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
95 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
96 EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
97 EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
98 EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
99 EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
100 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
101 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
102 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
103 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
104 EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
105 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
106 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
107 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
108 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
109 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
110 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
111 EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
112 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
113 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE),
114 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
115 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
116 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
117 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
118 EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
69fc87f1
MS		 119 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
120 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
121 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
122 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
123 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
124 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
125 HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
126 bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE),
127 EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */
128 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
129 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
130 HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
131 bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE),
132 EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */
133 HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
134 bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE),
135 EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */
136 HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
137 bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE),
138 EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */
139 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
140 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE),
141 HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
142 bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE),
143 EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */
144 HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
145 bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE),
146 EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */
147 HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
148 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE),
149 HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
150 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE),
151 HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
152 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE),
bd1ea41b
MS		 153 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
154 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
155 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
156 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
157 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
158 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
159 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
160 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
470b557a
AK		 161 HOWTO(R_390_IRELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
162 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, 0xffffffff, FALSE),
fb798c50
AK		 163 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
164 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
165 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
166 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
167 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
168 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
169 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
170 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
a85d7ed0
NC		 171};
172
173/* GNU extension to record C++ vtable hierarchy. */
174static reloc_howto_type elf32_s390_vtinherit_howto =
b34976b6 175 HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
a85d7ed0 176static reloc_howto_type elf32_s390_vtentry_howto =
b34976b6 177 HOWTO (R_390_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
a85d7ed0
NC		 178
179static reloc_howto_type *
2c3fc389
NC		 180elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
181 bfd_reloc_code_real_type code)
a85d7ed0 182{
ec338859 183 switch (code)
0451c93c
MS		 184 {
185 case BFD_RELOC_NONE:
186 return &elf_howto_table[(int) R_390_NONE];
187 case BFD_RELOC_8:
188 return &elf_howto_table[(int) R_390_8];
189 case BFD_RELOC_390_12:
190 return &elf_howto_table[(int) R_390_12];
191 case BFD_RELOC_16:
192 return &elf_howto_table[(int) R_390_16];
193 case BFD_RELOC_32:
194 return &elf_howto_table[(int) R_390_32];
195 case BFD_RELOC_CTOR:
196 return &elf_howto_table[(int) R_390_32];
197 case BFD_RELOC_32_PCREL:
198 return &elf_howto_table[(int) R_390_PC32];
199 case BFD_RELOC_390_GOT12:
200 return &elf_howto_table[(int) R_390_GOT12];
201 case BFD_RELOC_32_GOT_PCREL:
202 return &elf_howto_table[(int) R_390_GOT32];
203 case BFD_RELOC_390_PLT32:
204 return &elf_howto_table[(int) R_390_PLT32];
205 case BFD_RELOC_390_COPY:
206 return &elf_howto_table[(int) R_390_COPY];
207 case BFD_RELOC_390_GLOB_DAT:
208 return &elf_howto_table[(int) R_390_GLOB_DAT];
209 case BFD_RELOC_390_JMP_SLOT:
210 return &elf_howto_table[(int) R_390_JMP_SLOT];
211 case BFD_RELOC_390_RELATIVE:
212 return &elf_howto_table[(int) R_390_RELATIVE];
213 case BFD_RELOC_32_GOTOFF:
5236c819 214 return &elf_howto_table[(int) R_390_GOTOFF32];
0451c93c
MS		 215 case BFD_RELOC_390_GOTPC:
216 return &elf_howto_table[(int) R_390_GOTPC];
217 case BFD_RELOC_390_GOT16:
218 return &elf_howto_table[(int) R_390_GOT16];
219 case BFD_RELOC_16_PCREL:
220 return &elf_howto_table[(int) R_390_PC16];
fb798c50
AK		 221 case BFD_RELOC_390_PC12DBL:
222 return &elf_howto_table[(int) R_390_PC12DBL];
223 case BFD_RELOC_390_PLT12DBL:
224 return &elf_howto_table[(int) R_390_PLT12DBL];
0451c93c
MS		 225 case BFD_RELOC_390_PC16DBL:
226 return &elf_howto_table[(int) R_390_PC16DBL];
227 case BFD_RELOC_390_PLT16DBL:
228 return &elf_howto_table[(int) R_390_PLT16DBL];
fb798c50
AK		 229 case BFD_RELOC_390_PC24DBL:
230 return &elf_howto_table[(int) R_390_PC24DBL];
231 case BFD_RELOC_390_PLT24DBL:
232 return &elf_howto_table[(int) R_390_PLT24DBL];
befc3abb
MS		 233 case BFD_RELOC_390_PC32DBL:
234 return &elf_howto_table[(int) R_390_PC32DBL];
235 case BFD_RELOC_390_PLT32DBL:
236 return &elf_howto_table[(int) R_390_PLT32DBL];
237 case BFD_RELOC_390_GOTPCDBL:
238 return &elf_howto_table[(int) R_390_GOTPCDBL];
239 case BFD_RELOC_390_GOTENT:
240 return &elf_howto_table[(int) R_390_GOTENT];
5236c819
MS		 241 case BFD_RELOC_16_GOTOFF:
242 return &elf_howto_table[(int) R_390_GOTOFF16];
243 case BFD_RELOC_390_GOTPLT12:
244 return &elf_howto_table[(int) R_390_GOTPLT12];
245 case BFD_RELOC_390_GOTPLT16:
246 return &elf_howto_table[(int) R_390_GOTPLT16];
247 case BFD_RELOC_390_GOTPLT32:
248 return &elf_howto_table[(int) R_390_GOTPLT32];
249 case BFD_RELOC_390_GOTPLTENT:
250 return &elf_howto_table[(int) R_390_GOTPLTENT];
251 case BFD_RELOC_390_PLTOFF16:
252 return &elf_howto_table[(int) R_390_PLTOFF16];
253 case BFD_RELOC_390_PLTOFF32:
254 return &elf_howto_table[(int) R_390_PLTOFF32];
69fc87f1
MS		 255 case BFD_RELOC_390_TLS_LOAD:
256 return &elf_howto_table[(int) R_390_TLS_LOAD];
257 case BFD_RELOC_390_TLS_GDCALL:
258 return &elf_howto_table[(int) R_390_TLS_GDCALL];
259 case BFD_RELOC_390_TLS_LDCALL:
260 return &elf_howto_table[(int) R_390_TLS_LDCALL];
261 case BFD_RELOC_390_TLS_GD32:
262 return &elf_howto_table[(int) R_390_TLS_GD32];
263 case BFD_RELOC_390_TLS_GOTIE12:
264 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
265 case BFD_RELOC_390_TLS_GOTIE32:
266 return &elf_howto_table[(int) R_390_TLS_GOTIE32];
267 case BFD_RELOC_390_TLS_LDM32:
268 return &elf_howto_table[(int) R_390_TLS_LDM32];
269 case BFD_RELOC_390_TLS_IE32:
270 return &elf_howto_table[(int) R_390_TLS_IE32];
271 case BFD_RELOC_390_TLS_IEENT:
272 return &elf_howto_table[(int) R_390_TLS_IEENT];
273 case BFD_RELOC_390_TLS_LE32:
274 return &elf_howto_table[(int) R_390_TLS_LE32];
275 case BFD_RELOC_390_TLS_LDO32:
276 return &elf_howto_table[(int) R_390_TLS_LDO32];
277 case BFD_RELOC_390_TLS_DTPMOD:
278 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
279 case BFD_RELOC_390_TLS_DTPOFF:
280 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
281 case BFD_RELOC_390_TLS_TPOFF:
282 return &elf_howto_table[(int) R_390_TLS_TPOFF];
bd1ea41b
MS		 283 case BFD_RELOC_390_20:
284 return &elf_howto_table[(int) R_390_20];
285 case BFD_RELOC_390_GOT20:
286 return &elf_howto_table[(int) R_390_GOT20];
287 case BFD_RELOC_390_GOTPLT20:
288 return &elf_howto_table[(int) R_390_GOTPLT20];
289 case BFD_RELOC_390_TLS_GOTIE20:
290 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
470b557a
AK		 291 case BFD_RELOC_390_IRELATIVE:
292 return &elf_howto_table[(int) R_390_IRELATIVE];
0451c93c
MS		 293 case BFD_RELOC_VTABLE_INHERIT:
294 return &elf32_s390_vtinherit_howto;
295 case BFD_RELOC_VTABLE_ENTRY:
296 return &elf32_s390_vtentry_howto;
297 default:
298 break;
299 }
a85d7ed0
NC		 300 return 0;
301}
302
157090f7
AM		 303static reloc_howto_type *
304elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
305 const char *r_name)
306{
307 unsigned int i;
308
309 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
310 if (elf_howto_table[i].name != NULL
311 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
312 return &elf_howto_table[i];
313
314 if (strcasecmp (elf32_s390_vtinherit_howto.name, r_name) == 0)
315 return &elf32_s390_vtinherit_howto;
316 if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0)
317 return &elf32_s390_vtentry_howto;
318
319 return NULL;
320}
321
a85d7ed0
NC		 322/* We need to use ELF32_R_TYPE so we have our own copy of this function,
323 and elf32-s390.c has its own copy. */
324
325static void
2c3fc389
NC		 326elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
327 arelent *cache_ptr,
328 Elf_Internal_Rela *dst)
a85d7ed0 329{
d0fb9a8d
JJ		 330 unsigned int r_type = ELF32_R_TYPE(dst->r_info);
331 switch (r_type)
a85d7ed0
NC		 332 {
333 case R_390_GNU_VTINHERIT:
334 cache_ptr->howto = &elf32_s390_vtinherit_howto;
335 break;
336
337 case R_390_GNU_VTENTRY:
338 cache_ptr->howto = &elf32_s390_vtentry_howto;
339 break;
340
341 default:
d0fb9a8d
JJ		 342 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
343 {
344 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
345 abfd, (int) r_type);
346 r_type = R_390_NONE;
347 }
348 cache_ptr->howto = &elf_howto_table[r_type];
dc810e39 349 }
a85d7ed0
NC		 350}
351
69fc87f1
MS		 352/* A relocation function which doesn't do anything. */
353static bfd_reloc_status_type
2c3fc389
NC		 354s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
355 arelent *reloc_entry,
356 asymbol *symbol ATTRIBUTE_UNUSED,
357 void * data ATTRIBUTE_UNUSED,
358 asection *input_section,
359 bfd *output_bfd,
360 char **error_message ATTRIBUTE_UNUSED)
69fc87f1
MS		 361{
362 if (output_bfd)
363 reloc_entry->address += input_section->output_offset;
364 return bfd_reloc_ok;
365}
366
bd1ea41b
MS		 367/* Handle the large displacement relocs. */
368static bfd_reloc_status_type
2c3fc389
NC		 369s390_elf_ldisp_reloc (bfd *abfd ATTRIBUTE_UNUSED,
370 arelent *reloc_entry,
371 asymbol *symbol,
372 void * data ATTRIBUTE_UNUSED,
373 asection *input_section,
374 bfd *output_bfd,
375 char **error_message ATTRIBUTE_UNUSED)
bd1ea41b
MS		 376{
377 reloc_howto_type *howto = reloc_entry->howto;
378 bfd_vma relocation;
379 bfd_vma insn;
68ffbac6 380
bd1ea41b
MS		 381 if (output_bfd != (bfd *) NULL
382 && (symbol->flags & BSF_SECTION_SYM) == 0
383 && (! howto->partial_inplace
384 || reloc_entry->addend == 0))
385 {
386 reloc_entry->address += input_section->output_offset;
387 return bfd_reloc_ok;
388 }
68ffbac6 389
bd1ea41b
MS		 390 if (output_bfd != NULL)
391 return bfd_reloc_continue;
68ffbac6 392
07515404 393 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b 394 return bfd_reloc_outofrange;
68ffbac6 395
bd1ea41b
MS		 396 relocation = (symbol->value
397 + symbol->section->output_section->vma
398 + symbol->section->output_offset);
399 relocation += reloc_entry->addend;
400 if (howto->pc_relative)
401 {
402 relocation -= (input_section->output_section->vma
403 + input_section->output_offset);
404 relocation -= reloc_entry->address;
405 }
68ffbac6 406
bd1ea41b
MS		 407 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
408 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
409 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
68ffbac6 410
bd1ea41b
MS		 411 if ((bfd_signed_vma) relocation < - 0x80000
412 || (bfd_signed_vma) relocation > 0x7ffff)
413 return bfd_reloc_overflow;
414 else
415 return bfd_reloc_ok;
416}
417
b34976b6 418static bfd_boolean
2c3fc389 419elf_s390_is_local_label_name (bfd *abfd, const char *name)
a85d7ed0
NC		 420{
421 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 422 return TRUE;
a85d7ed0
NC		 423
424 return _bfd_elf_is_local_label_name (abfd, name);
425}
426
427/* Functions for the 390 ELF linker. */
428
429/* The name of the dynamic interpreter. This is put in the .interp
430 section. */
431
87049b0d 432#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
a85d7ed0 433
64285810
MS		 434/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
435 copying dynamic variables from a shared lib into an app's dynbss
436 section, and instead use a dynamic relocation to point into the
437 shared lib. */
438#define ELIMINATE_COPY_RELOCS 1
439
a85d7ed0
NC		 440/* The size in bytes of the first entry in the procedure linkage table. */
441#define PLT_FIRST_ENTRY_SIZE 32
442/* The size in bytes of an entry in the procedure linkage table. */
dc810e39 443#define PLT_ENTRY_SIZE 32
a85d7ed0
NC		 444
445#define GOT_ENTRY_SIZE 4
446
470b557a
AK		 447#define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela)
448
a85d7ed0
NC		 449/* The first three entries in a procedure linkage table are reserved,
450 and the initial contents are unimportant (we zero them out).
451 Subsequent entries look like this. See the SVR4 ABI 386
452 supplement to see how this works. */
453
454/* For the s390, simple addr offset can only be 0 - 4096.
455 To use the full 2 GB address space, several instructions
456 are needed to load an address in a register and execute
457 a branch( or just saving the address)
458
dc810e39 459 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC		 460
461/* The first 3 words in the GOT are then reserved.
462 Word 0 is the address of the dynamic table.
463 Word 1 is a pointer to a structure describing the object
464 Word 2 is used to point to the loader entry address.
465
4cc11e76 466 The code for position independent PLT entries looks like this:
a85d7ed0
NC		 467
468 r12 holds addr of the current GOT at entry to the PLT
469
470 The GOT holds the address in the PLT to be executed.
471 The loader then gets:
472 24(15) = Pointer to the structure describing the object.
a7e28bbe 473 28(15) = Offset into rela.plt
a85d7ed0
NC		 474
475 The loader must then find the module where the function is
476 and insert the address in the GOT.
477
478 Note: 390 can only address +- 64 K relative.
479 We check if offset > 65536, then make a relative branch -64xxx
480 back to a previous defined branch
481
482PLT1: BASR 1,0 # 2 bytes
483 L 1,22(1) # 4 bytes Load offset in GOT in r 1
484 L 1,(1,12) # 4 bytes Load address from GOT in r1
485 BCR 15,1 # 2 bytes Jump to address
486RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
487 L 1,14(1) # 4 bytes Load offset in symol table in r1
488 BRC 15,-x # 4 bytes Jump to start of PLT
489 .word 0 # 2 bytes filler
490 .long ? # 4 bytes offset in GOT
a7e28bbe 491 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 492
493 This was the general case. There are two additional, optimizes PLT
494 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
495 First the one for GOT offsets < 4096:
496
497PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
498 BCR 15,1 # 2 bytes Jump to address
499 .word 0,0,0 # 6 bytes filler
500RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
a7e28bbe 501 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
a85d7ed0
NC		 502 BRC 15,-x # 4 bytes Jump to start of PLT
503 .word 0,0,0 # 6 bytes filler
a7e28bbe 504 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 505
506 Second the one for GOT offsets < 32768:
507
508PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
509 L 1,(1,12) # 4 bytes Load address from GOT to r1
510 BCR 15,1 # 2 bytes Jump to address
511 .word 0 # 2 bytes filler
512RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
a7e28bbe 513 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
a85d7ed0
NC		 514 BRC 15,-x # 4 bytes Jump to start of PLT
515 .word 0,0,0 # 6 bytes filler
a7e28bbe 516 .long ? # 4 bytes offset into rela.plt
a85d7ed0
NC		 517
518Total = 32 bytes per PLT entry
519
520 The code for static build PLT entries looks like this:
521
522PLT1: BASR 1,0 # 2 bytes
523 L 1,22(1) # 4 bytes Load address of GOT entry
524 L 1,0(0,1) # 4 bytes Load address from GOT in r1
525 BCR 15,1 # 2 bytes Jump to address
526RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
527 L 1,14(1) # 4 bytes Load offset in symbol table in r1
528 BRC 15,-x # 4 bytes Jump to start of PLT
529 .word 0 # 2 bytes filler
530 .long ? # 4 bytes address of GOT entry
a7e28bbe 531 .long ? # 4 bytes offset into rela.plt */
a85d7ed0 532
9aa17453
AK		 533static const bfd_byte elf_s390_plt_entry[PLT_ENTRY_SIZE] =
534 {
535 0x0d, 0x10, /* basr %r1,%r0 */
536 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
537 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */
538 0x07, 0xf1, /* br %r1 */
539 0x0d, 0x10, /* basr %r1,%r0 */
540 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
541 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
542 0x00, 0x00, /* padding */
543 0x00, 0x00, 0x00, 0x00, /* GOT offset */
544 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
545 };
546
547/* Generic PLT pic entry. */
548static const bfd_byte elf_s390_plt_pic_entry[PLT_ENTRY_SIZE] =
549 {
550 0x0d, 0x10, /* basr %r1,%r0 */
551 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
552 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
553 0x07, 0xf1, /* br %r1 */
554 0x0d, 0x10, /* basr %r1,%r0 */
555 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
556 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
557 0x00, 0x00, /* padding */
558 0x00, 0x00, 0x00, 0x00, /* GOT offset */
559 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
560 };
561
562/* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced
563 when generating the PLT slot with the GOT offset. */
564static const bfd_byte elf_s390_plt_pic12_entry[PLT_ENTRY_SIZE] =
565 {
566 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */
567 0x07, 0xf1, /* br %r1 */
568 0x00, 0x00, 0x00, 0x00, /* padding */
569 0x00, 0x00,
570 0x0d, 0x10, /* basr %r1,%r0 */
571 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
572 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
573 0x00, 0x00, 0x00, 0x00,
574 0x00, 0x00, 0x00, 0x00
575 };
576
577/* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced
578 when generating the PLT slot with the GOT offset. */
579static const bfd_byte elf_s390_plt_pic16_entry[PLT_ENTRY_SIZE] =
580 {
581 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */
582 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
583 0x07, 0xf1, /* br %r1 */
584 0x00, 0x00,
585 0x0d, 0x10, /* basr %r1,%r0 */
586 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
587 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
588 0x00, 0x00, 0x00, 0x00,
589 0x00, 0x00, 0x00, 0x00,
590 0x00, 0x00
591 };
a85d7ed0 592
a7e28bbe 593/* The first PLT entry pushes the offset into the rela.plt
a85d7ed0
NC		 594 from R1 onto the stack at 8(15) and the loader object info
595 at 12(15), loads the loader address in R1 and jumps to it. */
596
597/* The first entry in the PLT for PIC code:
598
599PLT0:
a7e28bbe 600 ST 1,28(15) # R1 has offset into rela.plt
a85d7ed0 601 L 1,4(12) # Get loader ino(object struct address)
dc810e39 602 ST 1,24(15) # Store address
a85d7ed0
NC		 603 L 1,8(12) # Entry address of loader in R1
604 BR 1 # Jump to loader
605
606 The first entry in the PLT for static code:
607
608PLT0:
a7e28bbe 609 ST 1,28(15) # R1 has offset into rela.plt
a85d7ed0
NC		 610 BASR 1,0
611 L 1,18(0,1) # Get address of GOT
612 MVC 24(4,15),4(1) # Move loader ino to stack
613 L 1,8(1) # Get address of loader
614 BR 1 # Jump to loader
615 .word 0 # filler
616 .long got # address of GOT */
617
9aa17453
AK		 618static const bfd_byte elf_s390_plt_first_entry[PLT_FIRST_ENTRY_SIZE] =
619 {
620 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
621 0x0d, 0x10, /* basr %r1,%r0 */
622 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */
623 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */
624 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */
625 0x07, 0xf1, /* br %r1 */
626 0x00, 0x00, 0x00, 0x00,
627 0x00, 0x00, 0x00, 0x00,
628 0x00, 0x00
629 };
630
631static const bfd_byte elf_s390_plt_pic_first_entry[PLT_FIRST_ENTRY_SIZE] =
632 {
633 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
634 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */
635 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */
636 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */
637 0x07, 0xf1, /* br %r1 */
638 0x00, 0x00, 0x00, 0x00,
639 0x00, 0x00, 0x00, 0x00,
640 0x00, 0x00, 0x00, 0x00,
641 0x00, 0x00
642 };
a85d7ed0 643
a85d7ed0
NC		 644
645/* s390 ELF linker hash entry. */
646
647struct elf_s390_link_hash_entry
648{
0451c93c 649 struct elf_link_hash_entry elf;
a85d7ed0 650
0451c93c 651 /* Track dynamic relocs copied for this symbol. */
00d8c7a9 652 struct elf_dyn_relocs *dyn_relocs;
5236c819
MS		 653
654 /* Number of GOTPLT references for a function. */
655 bfd_signed_vma gotplt_refcount;
69fc87f1
MS		 656
657#define GOT_UNKNOWN 0
658#define GOT_NORMAL 1
659#define GOT_TLS_GD 2
660#define GOT_TLS_IE 3
661#define GOT_TLS_IE_NLT 4
662 unsigned char tls_type;
470b557a
AK		 663
664 /* For pointer equality reasons we might need to change the symbol
665 type from STT_GNU_IFUNC to STT_FUNC together with its value and
666 section entry. So after alloc_dynrelocs only these values should
667 be used. In order to check whether a symbol is IFUNC use
668 s390_is_ifunc_symbol_p. */
669 bfd_vma ifunc_resolver_address;
670 asection *ifunc_resolver_section;
a85d7ed0
NC		 671};
672
69fc87f1
MS		 673#define elf_s390_hash_entry(ent) \
674 ((struct elf_s390_link_hash_entry *)(ent))
675
470b557a
AK		 676/* This structure represents an entry in the local PLT list needed for
677 local IFUNC symbols. */
678struct plt_entry
679{
680 /* The section of the local symbol.
681 Set in relocate_section and used in finish_dynamic_sections. */
682 asection *sec;
683
684 union
685 {
686 bfd_signed_vma refcount;
687 bfd_vma offset;
688 } plt;
689};
690
0ffa91dd
NC		 691/* NOTE: Keep this structure in sync with
692 the one declared in elf64-s390.c. */
69fc87f1
MS		 693struct elf_s390_obj_tdata
694{
695 struct elf_obj_tdata root;
696
470b557a
AK		 697 /* A local PLT is needed for ifunc symbols. */
698 struct plt_entry *local_plt;
699
0ffa91dd 700 /* TLS type for each local got entry. */
69fc87f1
MS		 701 char *local_got_tls_type;
702};
703
704#define elf_s390_tdata(abfd) \
705 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
706
470b557a
AK		 707#define elf_s390_local_plt(abfd) \
708 (elf_s390_tdata (abfd)->local_plt)
709
69fc87f1
MS		 710#define elf_s390_local_got_tls_type(abfd) \
711 (elf_s390_tdata (abfd)->local_got_tls_type)
712
0ffa91dd
NC		 713#define is_s390_elf(bfd) \
714 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
715 && elf_tdata (bfd) != NULL \
4dfe6ac6 716 && elf_object_id (bfd) == S390_ELF_DATA)
0ffa91dd 717
69fc87f1 718static bfd_boolean
62d7a5f6 719elf_s390_mkobject (bfd *abfd)
69fc87f1 720{
0ffa91dd 721 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
4dfe6ac6 722 S390_ELF_DATA);
69fc87f1
MS		 723}
724
725static bfd_boolean
2c3fc389 726elf_s390_object_p (bfd *abfd)
69fc87f1 727{
69fc87f1
MS		 728 /* Set the right machine number for an s390 elf32 file. */
729 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
730}
731
a85d7ed0
NC		 732/* s390 ELF linker hash table. */
733
734struct elf_s390_link_hash_table
735{
0451c93c 736 struct elf_link_hash_table elf;
a85d7ed0 737
0451c93c 738 /* Short-cuts to get to dynamic linker sections. */
0451c93c
MS		 739 asection *sdynbss;
740 asection *srelbss;
470b557a 741 asection *irelifunc;
ec338859 742
2c3fc389
NC		 743 union
744 {
69fc87f1
MS		 745 bfd_signed_vma refcount;
746 bfd_vma offset;
747 } tls_ldm_got;
748
87d72d41
AM		 749 /* Small local sym cache. */
750 struct sym_cache sym_cache;
0451c93c 751};
a85d7ed0
NC		 752
753/* Get the s390 ELF linker hash table from a link_info structure. */
754
755#define elf_s390_hash_table(p) \
4dfe6ac6
NC		 756 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
757 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
a85d7ed0 758
470b557a
AK		 759#undef ELF64
760#include "elf-s390-common.c"
761
a85d7ed0
NC		 762/* Create an entry in an s390 ELF linker hash table. */
763
764static struct bfd_hash_entry *
2c3fc389
NC		 765link_hash_newfunc (struct bfd_hash_entry *entry,
766 struct bfd_hash_table *table,
767 const char *string)
a85d7ed0 768{
a85d7ed0
NC		 769 /* Allocate the structure if it has not already been allocated by a
770 subclass. */
0451c93c
MS		 771 if (entry == NULL)
772 {
773 entry = bfd_hash_allocate (table,
774 sizeof (struct elf_s390_link_hash_entry));
775 if (entry == NULL)
776 return entry;
777 }
ec338859 778
a85d7ed0 779 /* Call the allocation method of the superclass. */
0451c93c
MS		 780 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
781 if (entry != NULL)
a85d7ed0 782 {
0451c93c 783 struct elf_s390_link_hash_entry *eh;
ec338859 784
0451c93c
MS		 785 eh = (struct elf_s390_link_hash_entry *) entry;
786 eh->dyn_relocs = NULL;
5236c819 787 eh->gotplt_refcount = 0;
69fc87f1 788 eh->tls_type = GOT_UNKNOWN;
470b557a
AK		 789 eh->ifunc_resolver_address = 0;
790 eh->ifunc_resolver_section = NULL;
a85d7ed0
NC		 791 }
792
0451c93c 793 return entry;
a85d7ed0
NC		 794}
795
796/* Create an s390 ELF linker hash table. */
797
798static struct bfd_link_hash_table *
2c3fc389 799elf_s390_link_hash_table_create (bfd *abfd)
a85d7ed0
NC		 800{
801 struct elf_s390_link_hash_table *ret;
dc810e39 802 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
a85d7ed0 803
7bf52ea2 804 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
0451c93c 805 if (ret == NULL)
a85d7ed0
NC		 806 return NULL;
807
66eb6687 808 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 809 sizeof (struct elf_s390_link_hash_entry),
810 S390_ELF_DATA))
a85d7ed0 811 {
e2d34d7d 812 free (ret);
a85d7ed0
NC		 813 return NULL;
814 }
815
0451c93c
MS		 816 return &ret->elf.root;
817}
818
819/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
820 shortcuts to them in our hash table. */
821
b34976b6 822static bfd_boolean
2c3fc389 823create_got_section (bfd *dynobj, struct bfd_link_info *info)
0451c93c
MS		 824{
825 struct elf_s390_link_hash_table *htab;
826
827 if (! _bfd_elf_create_got_section (dynobj, info))
b34976b6 828 return FALSE;
0451c93c
MS		 829
830 htab = elf_s390_hash_table (info);
3d4d4302
AM		 831 htab->elf.sgot = bfd_get_linker_section (dynobj, ".got");
832 htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
833 htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got");
f41345a7 834 if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot)
0451c93c
MS		 835 abort ();
836
b34976b6 837 return TRUE;
0451c93c
MS		 838}
839
840/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
841 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
842 hash table. */
843
b34976b6 844static bfd_boolean
2c3fc389 845elf_s390_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
0451c93c
MS		 846{
847 struct elf_s390_link_hash_table *htab;
848
849 htab = elf_s390_hash_table (info);
f41345a7 850 if (!htab->elf.sgot && !create_got_section (dynobj, info))
b34976b6 851 return FALSE;
0451c93c
MS		 852
853 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 854 return FALSE;
0451c93c 855
3d4d4302
AM		 856 htab->elf.splt = bfd_get_linker_section (dynobj, ".plt");
857 htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt");
858 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
0e1862bb 859 if (!bfd_link_pic (info))
3d4d4302 860 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
0451c93c 861
f41345a7 862 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
0e1862bb 863 || (!bfd_link_pic (info) && !htab->srelbss))
0451c93c
MS		 864 abort ();
865
b34976b6 866 return TRUE;
a85d7ed0
NC		 867}
868
0451c93c
MS		 869/* Copy the extra info we tack onto an elf_link_hash_entry. */
870
871static void
2c3fc389
NC		 872elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
873 struct elf_link_hash_entry *dir,
874 struct elf_link_hash_entry *ind)
0451c93c
MS		 875{
876 struct elf_s390_link_hash_entry *edir, *eind;
877
878 edir = (struct elf_s390_link_hash_entry *) dir;
879 eind = (struct elf_s390_link_hash_entry *) ind;
880
881 if (eind->dyn_relocs != NULL)
882 {
883 if (edir->dyn_relocs != NULL)
884 {
00d8c7a9
AK		 885 struct elf_dyn_relocs **pp;
886 struct elf_dyn_relocs *p;
0451c93c 887
fcfa13d2 888 /* Add reloc counts against the indirect sym to the direct sym
0451c93c
MS		 889 list. Merge any entries against the same section. */
890 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
891 {
00d8c7a9 892 struct elf_dyn_relocs *q;
0451c93c
MS		 893
894 for (q = edir->dyn_relocs; q != NULL; q = q->next)
895 if (q->sec == p->sec)
896 {
897 q->pc_count += p->pc_count;
898 q->count += p->count;
899 *pp = p->next;
900 break;
901 }
902 if (q == NULL)
903 pp = &p->next;
904 }
905 *pp = edir->dyn_relocs;
906 }
907
908 edir->dyn_relocs = eind->dyn_relocs;
909 eind->dyn_relocs = NULL;
910 }
911
69fc87f1
MS		 912 if (ind->root.type == bfd_link_hash_indirect
913 && dir->got.refcount <= 0)
914 {
915 edir->tls_type = eind->tls_type;
916 eind->tls_type = GOT_UNKNOWN;
917 }
918
64285810
MS		 919 if (ELIMINATE_COPY_RELOCS
920 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 921 && dir->dynamic_adjusted)
922 {
923 /* If called to transfer flags for a weakdef during processing
924 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
925 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
926 dir->ref_dynamic |= ind->ref_dynamic;
927 dir->ref_regular |= ind->ref_regular;
928 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
929 dir->needs_plt |= ind->needs_plt;
930 }
64285810 931 else
fcfa13d2 932 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 933}
a85d7ed0 934
69fc87f1 935static int
2c3fc389
NC		 936elf_s390_tls_transition (struct bfd_link_info *info,
937 int r_type,
938 int is_local)
69fc87f1 939{
0e1862bb 940 if (bfd_link_pic (info))
69fc87f1
MS		 941 return r_type;
942
943 switch (r_type)
944 {
945 case R_390_TLS_GD32:
946 case R_390_TLS_IE32:
947 if (is_local)
948 return R_390_TLS_LE32;
949 return R_390_TLS_IE32;
950 case R_390_TLS_GOTIE32:
951 if (is_local)
952 return R_390_TLS_LE32;
953 return R_390_TLS_GOTIE32;
954 case R_390_TLS_LDM32:
955 return R_390_TLS_LE32;
956 }
957
958 return r_type;
959}
960
a85d7ed0
NC		 961/* Look through the relocs for a section during the first phase, and
962 allocate space in the global offset table or procedure linkage
963 table. */
964
b34976b6 965static bfd_boolean
2c3fc389
NC		 966elf_s390_check_relocs (bfd *abfd,
967 struct bfd_link_info *info,
968 asection *sec,
969 const Elf_Internal_Rela *relocs)
a85d7ed0 970{
0451c93c 971 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 972 Elf_Internal_Shdr *symtab_hdr;
973 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 974 const Elf_Internal_Rela *rel;
975 const Elf_Internal_Rela *rel_end;
a85d7ed0 976 asection *sreloc;
5236c819 977 bfd_signed_vma *local_got_refcounts;
69fc87f1 978 int tls_type, old_tls_type;
470b557a 979 Elf_Internal_Sym *isym;
a85d7ed0 980
0e1862bb 981 if (bfd_link_relocatable (info))
b34976b6 982 return TRUE;
a85d7ed0 983
0ffa91dd
NC		 984 BFD_ASSERT (is_s390_elf (abfd));
985
0451c93c 986 htab = elf_s390_hash_table (info);
0ffa91dd 987 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 988 sym_hashes = elf_sym_hashes (abfd);
5236c819 989 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 990
a85d7ed0
NC		 991 sreloc = NULL;
992
993 rel_end = relocs + sec->reloc_count;
994 for (rel = relocs; rel < rel_end; rel++)
995 {
69fc87f1 996 unsigned int r_type;
a85d7ed0
NC		 997 unsigned long r_symndx;
998 struct elf_link_hash_entry *h;
999
1000 r_symndx = ELF32_R_SYM (rel->r_info);
1001
0451c93c
MS		 1002 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1003 {
d003868e
AM		 1004 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1005 abfd, r_symndx);
b34976b6 1006 return FALSE;
0451c93c
MS		 1007 }
1008
a85d7ed0 1009 if (r_symndx < symtab_hdr->sh_info)
470b557a
AK		 1010 {
1011 /* A local symbol. */
1012 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1013 abfd, r_symndx);
1014 if (isym == NULL)
1015 return FALSE;
1016
1017 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1018 {
1019 struct plt_entry *plt;
1020
0cb79d69
AK		 1021 if (htab->elf.dynobj == NULL)
1022 htab->elf.dynobj = abfd;
1023
470b557a
AK		 1024 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1025 return FALSE;
1026
1027 if (local_got_refcounts == NULL)
1028 {
1029 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
1030 return FALSE;
1031 local_got_refcounts = elf_local_got_refcounts (abfd);
1032 }
1033 plt = elf_s390_local_plt (abfd);
1034 plt[r_symndx].plt.refcount++;
1035 }
1036 h = NULL;
1037 }
a85d7ed0 1038 else
973a3492
L		 1039 {
1040 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1041 while (h->root.type == bfd_link_hash_indirect
1042 || h->root.type == bfd_link_hash_warning)
1043 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM		 1044
1045 /* PR15323, ref flags aren't set for references in the same
1046 object. */
1047 h->root.non_ir_ref = 1;
973a3492 1048 }
a85d7ed0 1049
5236c819
MS		 1050 /* Create got section and local_got_refcounts array if they
1051 are needed. */
69fc87f1
MS		 1052 r_type = elf_s390_tls_transition (info,
1053 ELF32_R_TYPE (rel->r_info),
1054 h == NULL);
1055 switch (r_type)
a85d7ed0
NC		 1056 {
1057 case R_390_GOT12:
5236c819 1058 case R_390_GOT16:
bd1ea41b 1059 case R_390_GOT20:
a85d7ed0 1060 case R_390_GOT32:
befc3abb 1061 case R_390_GOTENT:
5236c819
MS		 1062 case R_390_GOTPLT12:
1063 case R_390_GOTPLT16:
bd1ea41b 1064 case R_390_GOTPLT20:
5236c819
MS		 1065 case R_390_GOTPLT32:
1066 case R_390_GOTPLTENT:
69fc87f1
MS		 1067 case R_390_TLS_GD32:
1068 case R_390_TLS_GOTIE12:
bd1ea41b 1069 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1070 case R_390_TLS_GOTIE32:
1071 case R_390_TLS_IEENT:
1072 case R_390_TLS_IE32:
1073 case R_390_TLS_LDM32:
5236c819
MS		 1074 if (h == NULL
1075 && local_got_refcounts == NULL)
a85d7ed0 1076 {
470b557a 1077 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
5236c819 1078 return FALSE;
470b557a 1079 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 1080 }
5236c819
MS		 1081 /* Fall through. */
1082 case R_390_GOTOFF16:
1083 case R_390_GOTOFF32:
0451c93c 1084 case R_390_GOTPC:
befc3abb 1085 case R_390_GOTPCDBL:
f41345a7 1086 if (htab->elf.sgot == NULL)
0451c93c
MS		 1087 {
1088 if (htab->elf.dynobj == NULL)
1089 htab->elf.dynobj = abfd;
1090 if (!create_got_section (htab->elf.dynobj, info))
b34976b6 1091 return FALSE;
0451c93c 1092 }
5236c819
MS		 1093 }
1094
470b557a
AK		 1095 if (h != NULL)
1096 {
1097 if (htab->elf.dynobj == NULL)
1098 htab->elf.dynobj = abfd;
1099 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1100 return FALSE;
1101
1102 /* Make sure an IFUNC symbol defined in a non-shared object
1103 always gets a PLT slot. */
1104 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1105 {
1106 /* The symbol is called by the dynamic loader in order
1107 to resolve the relocation. So it is in fact also
1108 referenced. */
1109 h->ref_regular = 1;
1110 h->needs_plt = 1;
1111 }
1112 }
69fc87f1 1113 switch (r_type)
5236c819 1114 {
5236c819
MS		 1115 case R_390_GOTOFF16:
1116 case R_390_GOTOFF32:
1117 case R_390_GOTPC:
1118 case R_390_GOTPCDBL:
470b557a
AK		 1119 /* These relocs do not need a GOT slot. They just load the
1120 GOT pointer itself or address something else relative to
1121 the GOT. Since the GOT pointer has been set up above we
1122 are done. */
a85d7ed0
NC		 1123 break;
1124
fb798c50 1125 case R_390_PLT12DBL:
26e41594 1126 case R_390_PLT16DBL:
fb798c50 1127 case R_390_PLT24DBL:
26e41594 1128 case R_390_PLT32DBL:
a85d7ed0 1129 case R_390_PLT32:
5236c819
MS		 1130 case R_390_PLTOFF16:
1131 case R_390_PLTOFF32:
a85d7ed0 1132 /* This symbol requires a procedure linkage table entry. We
26e41594
AM		 1133 actually build the entry in adjust_dynamic_symbol,
1134 because this might be a case of linking PIC code which is
1135 never referenced by a dynamic object, in which case we
1136 don't need to generate a procedure linkage table entry
1137 after all. */
a85d7ed0
NC		 1138
1139 /* If this is a local symbol, we resolve it directly without
26e41594 1140 creating a procedure linkage table entry. */
5236c819
MS		 1141 if (h != NULL)
1142 {
f5385ebf 1143 h->needs_plt = 1;
5236c819
MS		 1144 h->plt.refcount += 1;
1145 }
1146 break;
a85d7ed0 1147
5236c819
MS		 1148 case R_390_GOTPLT12:
1149 case R_390_GOTPLT16:
bd1ea41b 1150 case R_390_GOTPLT20:
5236c819
MS		 1151 case R_390_GOTPLT32:
1152 case R_390_GOTPLTENT:
1153 /* This symbol requires either a procedure linkage table entry
1154 or an entry in the local got. We actually build the entry
1155 in adjust_dynamic_symbol because whether this is really a
1156 global reference can change and with it the fact if we have
1157 to create a plt entry or a local got entry. To be able to
1158 make a once global symbol a local one we have to keep track
1159 of the number of gotplt references that exist for this
1160 symbol. */
1161 if (h != NULL)
1162 {
1163 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1164 h->needs_plt = 1;
5236c819
MS		 1165 h->plt.refcount += 1;
1166 }
1167 else
1168 local_got_refcounts[r_symndx] += 1;
a85d7ed0
NC		 1169 break;
1170
69fc87f1
MS		 1171 case R_390_TLS_LDM32:
1172 htab->tls_ldm_got.refcount += 1;
1173 break;
1174
1175 case R_390_TLS_IE32:
1176 case R_390_TLS_GOTIE12:
bd1ea41b 1177 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1178 case R_390_TLS_GOTIE32:
1179 case R_390_TLS_IEENT:
0e1862bb 1180 if (bfd_link_pic (info))
69fc87f1 1181 info->flags |= DF_STATIC_TLS;
ae9a127f 1182 /* Fall through. */
69fc87f1
MS		 1183
1184 case R_390_GOT12:
26e41594 1185 case R_390_GOT16:
bd1ea41b 1186 case R_390_GOT20:
69fc87f1
MS		 1187 case R_390_GOT32:
1188 case R_390_GOTENT:
1189 case R_390_TLS_GD32:
1190 /* This symbol requires a global offset table entry. */
1191 switch (r_type)
1192 {
1193 default:
1194 case R_390_GOT12:
1195 case R_390_GOT16:
bd1ea41b 1196 case R_390_GOT20:
69fc87f1
MS		 1197 case R_390_GOT32:
1198 case R_390_GOTENT:
1199 tls_type = GOT_NORMAL;
1200 break;
1201 case R_390_TLS_GD32:
1202 tls_type = GOT_TLS_GD;
1203 break;
1204 case R_390_TLS_IE32:
1205 case R_390_TLS_GOTIE32:
1206 tls_type = GOT_TLS_IE;
1207 break;
1208 case R_390_TLS_GOTIE12:
bd1ea41b 1209 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1210 case R_390_TLS_IEENT:
1211 tls_type = GOT_TLS_IE_NLT;
1212 break;
1213 }
1214
1215 if (h != NULL)
1216 {
1217 h->got.refcount += 1;
1218 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1219 }
1220 else
1221 {
1222 local_got_refcounts[r_symndx] += 1;
1223 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1224 }
1225 /* If a TLS symbol is accessed using IE at least once,
1226 there is no point to use dynamic model for it. */
1227 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1228 {
1229 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1230 {
1231 (*_bfd_error_handler)
d003868e
AM		 1232 (_("%B: `%s' accessed both as normal and thread local symbol"),
1233 abfd, h->root.root.string);
69fc87f1
MS		 1234 return FALSE;
1235 }
1236 if (old_tls_type > tls_type)
1237 tls_type = old_tls_type;
1238 }
1239
1240 if (old_tls_type != tls_type)
1241 {
1242 if (h != NULL)
1243 elf_s390_hash_entry (h)->tls_type = tls_type;
1244 else
1245 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1246 }
1247
1248 if (r_type != R_390_TLS_IE32)
1249 break;
ae9a127f 1250 /* Fall through. */
69fc87f1
MS		 1251
1252 case R_390_TLS_LE32:
e00d879a
AK		 1253 /* For static linking and executables this reloc will be
1254 calculated at linktime otherwise a TLS_TPOFF runtime
1255 reloc will be generated. */
0e1862bb 1256 if (r_type == R_390_TLS_LE32 && bfd_link_pie (info))
e00d879a
AK		 1257 break;
1258
0e1862bb 1259 if (!bfd_link_pic (info))
69fc87f1
MS		 1260 break;
1261 info->flags |= DF_STATIC_TLS;
ae9a127f 1262 /* Fall through. */
69fc87f1 1263
26e41594
AM		 1264 case R_390_8:
1265 case R_390_16:
a85d7ed0 1266 case R_390_32:
26e41594 1267 case R_390_PC16:
fb798c50 1268 case R_390_PC12DBL:
26e41594 1269 case R_390_PC16DBL:
fb798c50 1270 case R_390_PC24DBL:
befc3abb 1271 case R_390_PC32DBL:
a85d7ed0 1272 case R_390_PC32:
470b557a 1273 if (h != NULL)
0451c93c
MS		 1274 {
1275 /* If this reloc is in a read-only section, we might
1276 need a copy reloc. We can't check reliably at this
1277 stage whether the section is read-only, as input
1278 sections have not yet been mapped to output sections.
1279 Tentatively set the flag for now, and correct in
1280 adjust_dynamic_symbol. */
f5385ebf 1281 h->non_got_ref = 1;
ec338859 1282
0e1862bb 1283 if (!bfd_link_pic (info))
470b557a
AK		 1284 {
1285 /* We may need a .plt entry if the function this reloc
1286 refers to is in a shared lib. */
1287 h->plt.refcount += 1;
1288 }
0451c93c 1289 }
a85d7ed0
NC		 1290
1291 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1292 against a global symbol, or a non PC relative reloc
1293 against a local symbol, then we need to copy the reloc
1294 into the shared library. However, if we are linking with
1295 -Bsymbolic, we do not need to copy a reloc against a
1296 global symbol which is defined in an object we are
1297 including in the link (i.e., DEF_REGULAR is set). At
1298 this point we have not seen all the input files, so it is
1299 possible that DEF_REGULAR is not set now but will be set
1300 later (it is never cleared). In case of a weak definition,
1301 DEF_REGULAR may be cleared later by a strong definition in
1302 a shared library. We account for that possibility below by
1303 storing information in the relocs_copied field of the hash
1304 table entry. A similar situation occurs when creating
1305 shared libraries and symbol visibility changes render the
1306 symbol local.
1307
1308 If on the other hand, we are creating an executable, we
1309 may need to keep relocations for symbols satisfied by a
1310 dynamic library if we manage to avoid copy relocs for the
1311 symbol. */
0e1862bb 1312 if ((bfd_link_pic (info)
0451c93c 1313 && (sec->flags & SEC_ALLOC) != 0
ec338859 1314 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
fb798c50 1315 && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL
0451c93c 1316 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
fb798c50 1317 && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL
befc3abb 1318 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
0451c93c
MS		 1319 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1320 || (h != NULL
8c21ca21 1321 && (! SYMBOLIC_BIND (info, h)
0451c93c 1322 || h->root.type == bfd_link_hash_defweak
f5385ebf 1323 || !h->def_regular))))
64285810 1324 || (ELIMINATE_COPY_RELOCS
0e1862bb 1325 && !bfd_link_pic (info)
0451c93c
MS		 1326 && (sec->flags & SEC_ALLOC) != 0
1327 && h != NULL
1328 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1329 || !h->def_regular)))
a85d7ed0 1330 {
00d8c7a9
AK		 1331 struct elf_dyn_relocs *p;
1332 struct elf_dyn_relocs **head;
ec338859 1333
0451c93c
MS		 1334 /* We must copy these reloc types into the output file.
1335 Create a reloc section in dynobj and make room for
1336 this reloc. */
a85d7ed0
NC		 1337 if (sreloc == NULL)
1338 {
0451c93c
MS		 1339 if (htab->elf.dynobj == NULL)
1340 htab->elf.dynobj = abfd;
a85d7ed0 1341
83bac4b0
NC		 1342 sreloc = _bfd_elf_make_dynamic_reloc_section
1343 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1344
a85d7ed0 1345 if (sreloc == NULL)
83bac4b0 1346 return FALSE;
a85d7ed0
NC		 1347 }
1348
0451c93c
MS		 1349 /* If this is a global symbol, we count the number of
1350 relocations we need for this symbol. */
1351 if (h != NULL)
a85d7ed0 1352 {
ec338859 1353 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS		 1354 }
1355 else
1356 {
ec338859
AM		 1357 /* Track dynamic relocs needed for local syms too.
1358 We really need local syms available to do this
1359 easily. Oh well. */
ec338859 1360 asection *s;
6edfbbad 1361 void *vpp;
ae9a127f 1362
87d72d41
AM		 1363 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1364 abfd, r_symndx);
1365 if (isym == NULL)
b34976b6 1366 return FALSE;
ec338859 1367
87d72d41
AM		 1368 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1369 if (s == NULL)
1370 s = sec;
1371
6edfbbad 1372 vpp = &elf_section_data (s)->local_dynrel;
00d8c7a9 1373 head = (struct elf_dyn_relocs **) vpp;
ec338859
AM		 1374 }
1375
1376 p = *head;
1377 if (p == NULL || p->sec != sec)
1378 {
1379 bfd_size_type amt = sizeof *p;
ae9a127f 1380
00d8c7a9 1381 p = ((struct elf_dyn_relocs *)
ec338859
AM		 1382 bfd_alloc (htab->elf.dynobj, amt));
1383 if (p == NULL)
b34976b6 1384 return FALSE;
ec338859
AM		 1385 p->next = *head;
1386 *head = p;
1387 p->sec = sec;
1388 p->count = 0;
1389 p->pc_count = 0;
a85d7ed0 1390 }
ec338859
AM		 1391
1392 p->count += 1;
1393 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
fb798c50 1394 || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL
ec338859 1395 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
fb798c50 1396 || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL
befc3abb 1397 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
ec338859
AM		 1398 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1399 p->pc_count += 1;
a85d7ed0 1400 }
a85d7ed0 1401 break;
ec338859 1402
a85d7ed0
NC		 1403 /* This relocation describes the C++ object vtable hierarchy.
1404 Reconstruct it for later use during GC. */
26e41594 1405 case R_390_GNU_VTINHERIT:
c152c796 1406 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
26e41594
AM		 1407 return FALSE;
1408 break;
ec338859 1409
a85d7ed0
NC		 1410 /* This relocation describes which C++ vtable entries are actually
1411 used. Record for later use during GC. */
26e41594 1412 case R_390_GNU_VTENTRY:
d17e0c6e
JB		 1413 BFD_ASSERT (h != NULL);
1414 if (h != NULL
1415 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
26e41594
AM		 1416 return FALSE;
1417 break;
ec338859 1418
a85d7ed0
NC		 1419 default:
1420 break;
1421 }
1422 }
1423
b34976b6 1424 return TRUE;
a85d7ed0
NC		 1425}
1426
1427/* Return the section that should be marked against GC for a given
1428 relocation. */
1429
1430static asection *
07adf181
AM		 1431elf_s390_gc_mark_hook (asection *sec,
1432 struct bfd_link_info *info,
1433 Elf_Internal_Rela *rel,
1434 struct elf_link_hash_entry *h,
1435 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1436{
1437 if (h != NULL)
07adf181
AM		 1438 switch (ELF32_R_TYPE (rel->r_info))
1439 {
1440 case R_390_GNU_VTINHERIT:
1441 case R_390_GNU_VTENTRY:
1442 return NULL;
1443 }
1444 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0 1445
a85d7ed0
NC		 1446}
1447
1448/* Update the got entry reference counts for the section being removed. */
1449
b34976b6 1450static bfd_boolean
07adf181
AM		 1451elf_s390_gc_sweep_hook (bfd *abfd,
1452 struct bfd_link_info *info,
1453 asection *sec,
1454 const Elf_Internal_Rela *relocs)
a85d7ed0 1455{
470b557a 1456 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1457 Elf_Internal_Shdr *symtab_hdr;
1458 struct elf_link_hash_entry **sym_hashes;
1459 bfd_signed_vma *local_got_refcounts;
1460 const Elf_Internal_Rela *rel, *relend;
a85d7ed0 1461
0e1862bb 1462 if (bfd_link_relocatable (info))
7dda2462
TG		 1463 return TRUE;
1464
470b557a
AK		 1465 htab = elf_s390_hash_table (info);
1466 if (htab == NULL)
1467 return FALSE;
1468
ec338859 1469 elf_section_data (sec)->local_dynrel = NULL;
a85d7ed0 1470
0ffa91dd 1471 symtab_hdr = &elf_symtab_hdr (abfd);
0451c93c
MS		 1472 sym_hashes = elf_sym_hashes (abfd);
1473 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0
NC		 1474
1475 relend = relocs + sec->reloc_count;
1476 for (rel = relocs; rel < relend; rel++)
5236c819 1477 {
26e41594
AM		 1478 unsigned long r_symndx;
1479 unsigned int r_type;
1480 struct elf_link_hash_entry *h = NULL;
1481
5236c819 1482 r_symndx = ELF32_R_SYM (rel->r_info);
26e41594
AM		 1483 if (r_symndx >= symtab_hdr->sh_info)
1484 {
1485 struct elf_s390_link_hash_entry *eh;
00d8c7a9
AK		 1486 struct elf_dyn_relocs **pp;
1487 struct elf_dyn_relocs *p;
0451c93c 1488
26e41594 1489 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1490 while (h->root.type == bfd_link_hash_indirect
1491 || h->root.type == bfd_link_hash_warning)
1492 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1493 eh = (struct elf_s390_link_hash_entry *) h;
5236c819 1494
26e41594
AM		 1495 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1496 if (p->sec == sec)
1497 {
1498 /* Everything must go for SEC. */
1499 *pp = p->next;
1500 break;
1501 }
1502 }
470b557a
AK		 1503 else
1504 {
1505 Elf_Internal_Sym *isym;
1506
1507 /* A local symbol. */
1508 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1509 abfd, r_symndx);
1510 if (isym == NULL)
1511 return FALSE;
1512
1513 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1514 {
1515 struct plt_entry *plt = elf_s390_local_plt (abfd);
1516 if (plt[r_symndx].plt.refcount > 0)
1517 plt[r_symndx].plt.refcount--;
1518 }
1519 }
26e41594
AM		 1520
1521 r_type = ELF32_R_TYPE (rel->r_info);
1522 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
69fc87f1 1523 switch (r_type)
5236c819 1524 {
69fc87f1
MS		 1525 case R_390_TLS_LDM32:
1526 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1527 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1528 break;
1529
ef05be83
AK		 1530 case R_390_GOTOFF16:
1531 case R_390_GOTOFF32:
1532 case R_390_GOTPC:
1533 case R_390_GOTPCDBL:
1534 break;
1535
69fc87f1
MS		 1536 case R_390_TLS_GD32:
1537 case R_390_TLS_IE32:
1538 case R_390_TLS_GOTIE12:
bd1ea41b 1539 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1540 case R_390_TLS_GOTIE32:
1541 case R_390_TLS_IEENT:
5236c819
MS		 1542 case R_390_GOT12:
1543 case R_390_GOT16:
bd1ea41b 1544 case R_390_GOT20:
5236c819 1545 case R_390_GOT32:
5236c819
MS		 1546 case R_390_GOTENT:
1547 if (h != NULL)
1548 {
1549 if (h->got.refcount > 0)
1550 h->got.refcount -= 1;
1551 }
1552 else if (local_got_refcounts != NULL)
1553 {
1554 if (local_got_refcounts[r_symndx] > 0)
1555 local_got_refcounts[r_symndx] -= 1;
1556 }
26e41594 1557 break;
a85d7ed0 1558
5236c819
MS		 1559 case R_390_8:
1560 case R_390_12:
1561 case R_390_16:
bd1ea41b 1562 case R_390_20:
5236c819
MS		 1563 case R_390_32:
1564 case R_390_PC16:
fb798c50 1565 case R_390_PC12DBL:
5236c819 1566 case R_390_PC16DBL:
fb798c50 1567 case R_390_PC24DBL:
5236c819
MS		 1568 case R_390_PC32DBL:
1569 case R_390_PC32:
0e1862bb 1570 if (bfd_link_pic (info))
26e41594
AM		 1571 break;
1572 /* Fall through. */
1573
fb798c50 1574 case R_390_PLT12DBL:
69fc87f1 1575 case R_390_PLT16DBL:
fb798c50 1576 case R_390_PLT24DBL:
69fc87f1
MS		 1577 case R_390_PLT32DBL:
1578 case R_390_PLT32:
1579 case R_390_PLTOFF16:
1580 case R_390_PLTOFF32:
1581 if (h != NULL)
1582 {
1583 if (h->plt.refcount > 0)
1584 h->plt.refcount -= 1;
1585 }
1586 break;
1587
1588 case R_390_GOTPLT12:
1589 case R_390_GOTPLT16:
bd1ea41b 1590 case R_390_GOTPLT20:
69fc87f1
MS		 1591 case R_390_GOTPLT32:
1592 case R_390_GOTPLTENT:
1593 if (h != NULL)
1594 {
1595 if (h->plt.refcount > 0)
1596 {
1597 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1598 h->plt.refcount -= 1;
1599 }
1600 }
1601 else if (local_got_refcounts != NULL)
1602 {
1603 if (local_got_refcounts[r_symndx] > 0)
1604 local_got_refcounts[r_symndx] -= 1;
1605 }
1606 break;
1607
5236c819
MS		 1608 default:
1609 break;
1610 }
1611 }
a85d7ed0 1612
b34976b6 1613 return TRUE;
a85d7ed0
NC		 1614}
1615
5236c819
MS		 1616/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1617 entry but we found we will not create any. Called when we find we will
1618 not have any PLT for this symbol, by for example
1619 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1620 or elf_s390_size_dynamic_sections if no dynamic sections will be
1621 created (we're only linking static objects). */
1622
1623static void
2c3fc389 1624elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
5236c819
MS		 1625{
1626 if (h->elf.root.type == bfd_link_hash_warning)
1627 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1628
1629 if (h->gotplt_refcount <= 0)
1630 return;
1631
1632 /* We simply add the number of gotplt references to the number
1633 * of got references for this symbol. */
1634 h->elf.got.refcount += h->gotplt_refcount;
1635 h->gotplt_refcount = -1;
1636}
1637
a85d7ed0
NC		 1638/* Adjust a symbol defined by a dynamic object and referenced by a
1639 regular object. The current definition is in some section of the
1640 dynamic object, but we're not including those sections. We have to
1641 change the definition to something the rest of the link can
1642 understand. */
1643
b34976b6 1644static bfd_boolean
2c3fc389
NC		 1645elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1646 struct elf_link_hash_entry *h)
a85d7ed0 1647{
0451c93c 1648 struct elf_s390_link_hash_table *htab;
a85d7ed0 1649 asection *s;
a85d7ed0 1650
470b557a
AK		 1651 /* STT_GNU_IFUNC symbol must go through PLT. */
1652 if (s390_is_ifunc_symbol_p (h))
1653 return TRUE;
1654
a85d7ed0
NC		 1655 /* If this is a function, put it in the procedure linkage table. We
1656 will fill in the contents of the procedure linkage table later
cedb70c5 1657 (although we could actually do it here). */
a85d7ed0 1658 if (h->type == STT_FUNC
f5385ebf 1659 || h->needs_plt)
a85d7ed0 1660 {
0451c93c 1661 if (h->plt.refcount <= 0
8c21ca21
AK		 1662 || SYMBOL_CALLS_LOCAL (info, h)
1663 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1664 && h->root.type != bfd_link_hash_undefweak))
a85d7ed0
NC		 1665 {
1666 /* This case can occur if we saw a PLT32 reloc in an input
26e41594
AM		 1667 file, but the symbol was never referred to by a dynamic
1668 object, or if all references were garbage collected. In
a85d7ed0
NC		 1669 such a case, we don't actually need to build a procedure
1670 linkage table, and we can just do a PC32 reloc instead. */
1671 h->plt.offset = (bfd_vma) -1;
f5385ebf 1672 h->needs_plt = 0;
5236c819 1673 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1674 }
1675
b34976b6 1676 return TRUE;
a85d7ed0 1677 }
bbd7ec4a 1678 else
0451c93c
MS		 1679 /* It's possible that we incorrectly decided a .plt reloc was
1680 needed for an R_390_PC32 reloc to a non-function sym in
1681 check_relocs. We can't decide accurately between function and
1682 non-function syms in check-relocs; Objects loaded later in
1683 the link may change h->type. So fix it now. */
bbd7ec4a 1684 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1685
1686 /* If this is a weak symbol, and there is a real definition, the
1687 processor independent code will have arranged for us to see the
1688 real definition first, and we can just use the same value. */
f6e332e6 1689 if (h->u.weakdef != NULL)
a85d7ed0 1690 {
f6e332e6
AM		 1691 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1692 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1693 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1694 h->root.u.def.value = h->u.weakdef->root.u.def.value;
64285810 1695 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1696 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1697 return TRUE;
a85d7ed0
NC		 1698 }
1699
1700 /* This is a reference to a symbol defined by a dynamic object which
1701 is not a function. */
1702
1703 /* If we are creating a shared library, we must presume that the
1704 only references to the symbol are via the global offset table.
1705 For such cases we need not do anything here; the relocations will
1706 be handled correctly by relocate_section. */
0e1862bb 1707 if (bfd_link_pic (info))
b34976b6 1708 return TRUE;
a85d7ed0
NC		 1709
1710 /* If there are no references to this symbol that do not use the
1711 GOT, we don't need to generate a copy reloc. */
f5385ebf 1712 if (!h->non_got_ref)
b34976b6 1713 return TRUE;
a85d7ed0 1714
0451c93c
MS		 1715 /* If -z nocopyreloc was given, we won't generate them either. */
1716 if (info->nocopyreloc)
1717 {
f5385ebf 1718 h->non_got_ref = 0;
b34976b6 1719 return TRUE;
0451c93c
MS		 1720 }
1721
64285810 1722 if (ELIMINATE_COPY_RELOCS)
0451c93c 1723 {
64285810 1724 struct elf_s390_link_hash_entry * eh;
00d8c7a9 1725 struct elf_dyn_relocs *p;
0451c93c 1726
64285810
MS		 1727 eh = (struct elf_s390_link_hash_entry *) h;
1728 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1729 {
1730 s = p->sec->output_section;
1731 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1732 break;
1733 }
1734
1735 /* If we didn't find any dynamic relocs in read-only sections, then
1736 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1737 if (p == NULL)
1738 {
f5385ebf 1739 h->non_got_ref = 0;
64285810
MS		 1740 return TRUE;
1741 }
0451c93c
MS		 1742 }
1743
a85d7ed0
NC		 1744 /* We must allocate the symbol in our .dynbss section, which will
1745 become part of the .bss section of the executable. There will be
1746 an entry for this symbol in the .dynsym section. The dynamic
1747 object will contain position independent code, so all references
1748 from the dynamic object to this symbol will go through the global
1749 offset table. The dynamic linker will use the .dynsym entry to
1750 determine the address it must put in the global offset table, so
1751 both the dynamic object and the regular object will refer to the
1752 same memory location for the variable. */
1753
0451c93c 1754 htab = elf_s390_hash_table (info);
a85d7ed0 1755
0451c93c
MS		 1756 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1757 copy the initial value out of the dynamic object and into the
1758 runtime process image. */
1d7e9d18 1759 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
a85d7ed0 1760 {
eea6121a 1761 htab->srelbss->size += sizeof (Elf32_External_Rela);
f5385ebf 1762 h->needs_copy = 1;
a85d7ed0
NC		 1763 }
1764
0451c93c 1765 s = htab->sdynbss;
a85d7ed0 1766
6cabe1ea 1767 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a85d7ed0
NC		 1768}
1769
0451c93c
MS		 1770/* Allocate space in .plt, .got and associated reloc sections for
1771 dynamic relocs. */
1772
b34976b6 1773static bfd_boolean
2c3fc389 1774allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 1775{
1776 struct bfd_link_info *info;
1777 struct elf_s390_link_hash_table *htab;
470b557a 1778 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
00d8c7a9 1779 struct elf_dyn_relocs *p;
0451c93c 1780
e92d460e 1781 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1782 return TRUE;
0451c93c
MS		 1783
1784 info = (struct bfd_link_info *) inf;
1785 htab = elf_s390_hash_table (info);
1786
470b557a
AK		 1787 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1788 here if it is defined and referenced in a non-shared object. */
1789 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1790 return s390_elf_allocate_ifunc_dyn_relocs (info, h,
1791 &eh->dyn_relocs);
1792 else if (htab->elf.dynamic_sections_created
1793 && h->plt.refcount > 0)
0451c93c
MS		 1794 {
1795 /* Make sure this symbol is output as a dynamic symbol.
1796 Undefined weak syms won't yet be marked as dynamic. */
1797 if (h->dynindx == -1
f5385ebf 1798 && !h->forced_local)
0451c93c 1799 {
c152c796 1800 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1801 return FALSE;
0451c93c
MS		 1802 }
1803
0e1862bb 1804 if (bfd_link_pic (info)
4ec72bde 1805 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c 1806 {
f41345a7 1807 asection *s = htab->elf.splt;
0451c93c
MS		 1808
1809 /* If this is the first .plt entry, make room for the special
1810 first entry. */
eea6121a
AM		 1811 if (s->size == 0)
1812 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1813
eea6121a 1814 h->plt.offset = s->size;
0451c93c
MS		 1815
1816 /* If this symbol is not defined in a regular file, and we are
1817 not generating a shared library, then set the symbol to this
1818 location in the .plt. This is required to make function
1819 pointers compare as equal between the normal executable and
1820 the shared library. */
0e1862bb 1821 if (! bfd_link_pic (info)
f5385ebf 1822 && !h->def_regular)
0451c93c
MS		 1823 {
1824 h->root.u.def.section = s;
1825 h->root.u.def.value = h->plt.offset;
1826 }
ec338859 1827
0451c93c 1828 /* Make room for this entry. */
eea6121a 1829 s->size += PLT_ENTRY_SIZE;
ec338859 1830
0451c93c
MS		 1831 /* We also need to make an entry in the .got.plt section, which
1832 will be placed in the .got section by the linker script. */
f41345a7 1833 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1834
1835 /* We also need to make an entry in the .rela.plt section. */
f41345a7 1836 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1837 }
1838 else
1839 {
1840 h->plt.offset = (bfd_vma) -1;
f5385ebf 1841 h->needs_plt = 0;
5236c819 1842 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c 1843 }
ec338859 1844 }
0451c93c
MS		 1845 else
1846 {
1847 h->plt.offset = (bfd_vma) -1;
f5385ebf 1848 h->needs_plt = 0;
5236c819 1849 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
ec338859
AM		 1850 }
1851
69fc87f1
MS		 1852 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1853 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1854 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1855 we can save the dynamic TLS relocation. */
1856 if (h->got.refcount > 0
0e1862bb 1857 && !bfd_link_pic (info)
69fc87f1
MS		 1858 && h->dynindx == -1
1859 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
0451c93c 1860 {
69fc87f1
MS		 1861 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1862 /* For the GOTIE access without a literal pool entry the offset has
1863 to be stored somewhere. The immediate value in the instruction
1864 is not bit enough so the value is stored in the got. */
1865 {
f41345a7
AK		 1866 h->got.offset = htab->elf.sgot->size;
1867 htab->elf.sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1868 }
1869 else
1870 h->got.offset = (bfd_vma) -1;
1871 }
1872 else if (h->got.refcount > 0)
1873 {
0451c93c 1874 asection *s;
b34976b6 1875 bfd_boolean dyn;
69fc87f1 1876 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1877
1878 /* Make sure this symbol is output as a dynamic symbol.
1879 Undefined weak syms won't yet be marked as dynamic. */
1880 if (h->dynindx == -1
f5385ebf 1881 && !h->forced_local)
0451c93c 1882 {
c152c796 1883 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1884 return FALSE;
0451c93c
MS		 1885 }
1886
f41345a7 1887 s = htab->elf.sgot;
eea6121a
AM		 1888 h->got.offset = s->size;
1889 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1890 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1891 if (tls_type == GOT_TLS_GD)
eea6121a 1892 s->size += GOT_ENTRY_SIZE;
0451c93c 1893 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1894 /* R_390_TLS_IE32 needs one dynamic relocation,
1895 R_390_TLS_GD32 needs one if local symbol and two if global. */
1896 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1897 || tls_type >= GOT_TLS_IE)
f41345a7 1898 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1 1899 else if (tls_type == GOT_TLS_GD)
f41345a7 1900 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela);
82058a73
MS		 1901 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1902 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 1903 && (bfd_link_pic (info)
82058a73 1904 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
f41345a7 1905 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
0451c93c
MS		 1906 }
1907 else
1908 h->got.offset = (bfd_vma) -1;
1909
0451c93c 1910 if (eh->dyn_relocs == NULL)
b34976b6 1911 return TRUE;
0451c93c
MS		 1912
1913 /* In the shared -Bsymbolic case, discard space allocated for
1914 dynamic pc-relative relocs against symbols which turn out to be
1915 defined in regular objects. For the normal shared case, discard
1916 space for pc-relative relocs that have become local due to symbol
1917 visibility changes. */
1918
0e1862bb 1919 if (bfd_link_pic (info))
0451c93c 1920 {
8c21ca21 1921 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c 1922 {
00d8c7a9 1923 struct elf_dyn_relocs **pp;
0451c93c
MS		 1924
1925 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1926 {
1927 p->count -= p->pc_count;
1928 p->pc_count = 0;
1929 if (p->count == 0)
1930 *pp = p->next;
1931 else
1932 pp = &p->next;
1933 }
1934 }
82058a73
MS		 1935
1936 /* Also discard relocs on undefined weak syms with non-default
1937 visibility. */
22d606e9 1938 if (eh->dyn_relocs != NULL
82058a73 1939 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 1940 {
1941 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1942 eh->dyn_relocs = NULL;
1943
1944 /* Make sure undefined weak symbols are output as a dynamic
1945 symbol in PIEs. */
1946 else if (h->dynindx == -1
1947 && !h->forced_local)
1948 {
1949 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1950 return FALSE;
1951 }
1952 }
0451c93c 1953 }
64285810 1954 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1955 {
1956 /* For the non-shared case, discard space for relocs against
1957 symbols which turn out to need copy relocs or are not
1958 dynamic. */
1959
f5385ebf
AM		 1960 if (!h->non_got_ref
1961 && ((h->def_dynamic
1962 && !h->def_regular)
0451c93c
MS		 1963 || (htab->elf.dynamic_sections_created
1964 && (h->root.type == bfd_link_hash_undefweak
1965 || h->root.type == bfd_link_hash_undefined))))
1966 {
1967 /* Make sure this symbol is output as a dynamic symbol.
1968 Undefined weak syms won't yet be marked as dynamic. */
1969 if (h->dynindx == -1
f5385ebf 1970 && !h->forced_local)
0451c93c 1971 {
c152c796 1972 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1973 return FALSE;
0451c93c
MS		 1974 }
1975
1976 /* If that succeeded, we know we'll be keeping all the
1977 relocs. */
1978 if (h->dynindx != -1)
1979 goto keep;
1980 }
1981
1982 eh->dyn_relocs = NULL;
1983
ec338859 1984 keep: ;
0451c93c
MS		 1985 }
1986
1987 /* Finally, allocate space. */
1988 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1989 {
1990 asection *sreloc = elf_section_data (p->sec)->sreloc;
ae9a127f 1991
eea6121a 1992 sreloc->size += p->count * sizeof (Elf32_External_Rela);
0451c93c
MS		 1993 }
1994
b34976b6 1995 return TRUE;
0451c93c
MS		 1996}
1997
1998/* Find any dynamic relocs that apply to read-only sections. */
1999
b34976b6 2000static bfd_boolean
2c3fc389 2001readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
0451c93c
MS		 2002{
2003 struct elf_s390_link_hash_entry *eh;
00d8c7a9 2004 struct elf_dyn_relocs *p;
0451c93c
MS		 2005
2006 eh = (struct elf_s390_link_hash_entry *) h;
2007 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2008 {
2009 asection *s = p->sec->output_section;
2010
2011 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2012 {
2013 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2014
2015 info->flags |= DF_TEXTREL;
2016
2017 /* Not an error, just cut short the traversal. */
b34976b6 2018 return FALSE;
0451c93c
MS		 2019 }
2020 }
b34976b6 2021 return TRUE;
0451c93c
MS		 2022}
2023
a85d7ed0
NC		 2024/* Set the sizes of the dynamic sections. */
2025
b34976b6 2026static bfd_boolean
2c3fc389
NC		 2027elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2028 struct bfd_link_info *info)
a85d7ed0 2029{
0451c93c 2030 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2031 bfd *dynobj;
2032 asection *s;
b34976b6 2033 bfd_boolean relocs;
0451c93c 2034 bfd *ibfd;
a85d7ed0 2035
0451c93c
MS		 2036 htab = elf_s390_hash_table (info);
2037 dynobj = htab->elf.dynobj;
2038 if (dynobj == NULL)
2039 abort ();
a85d7ed0 2040
0451c93c 2041 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2042 {
2043 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 2044 if (bfd_link_executable (info) && !info->nointerp)
a85d7ed0 2045 {
3d4d4302 2046 s = bfd_get_linker_section (dynobj, ".interp");
0451c93c
MS		 2047 if (s == NULL)
2048 abort ();
eea6121a 2049 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 2050 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2051 }
2052 }
a85d7ed0 2053
0451c93c
MS		 2054 /* Set up .got offsets for local syms, and space for local dynamic
2055 relocs. */
c72f2fb2 2056 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a85d7ed0 2057 {
0451c93c
MS		 2058 bfd_signed_vma *local_got;
2059 bfd_signed_vma *end_local_got;
69fc87f1 2060 char *local_tls_type;
0451c93c
MS		 2061 bfd_size_type locsymcount;
2062 Elf_Internal_Shdr *symtab_hdr;
2063 asection *srela;
470b557a
AK		 2064 struct plt_entry *local_plt;
2065 unsigned int i;
a85d7ed0 2066
0ffa91dd 2067 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 2068 continue;
2069
0451c93c 2070 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 2071 {
00d8c7a9 2072 struct elf_dyn_relocs *p;
0451c93c 2073
6edfbbad 2074 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 2075 {
ec338859
AM		 2076 if (!bfd_is_abs_section (p->sec)
2077 && bfd_is_abs_section (p->sec->output_section))
2078 {
2079 /* Input section has been discarded, either because
2080 it is a copy of a linkonce section or due to
2081 linker script /DISCARD/, so we'll be discarding
2082 the relocs too. */
2083 }
248866a8 2084 else if (p->count != 0)
ec338859
AM		 2085 {
2086 srela = elf_section_data (p->sec)->sreloc;
eea6121a 2087 srela->size += p->count * sizeof (Elf32_External_Rela);
248866a8
AM		 2088 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2089 info->flags |= DF_TEXTREL;
ec338859 2090 }
a85d7ed0
NC		 2091 }
2092 }
0451c93c
MS		 2093
2094 local_got = elf_local_got_refcounts (ibfd);
2095 if (!local_got)
2096 continue;
2097
0ffa91dd 2098 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 2099 locsymcount = symtab_hdr->sh_info;
2100 end_local_got = local_got + locsymcount;
69fc87f1 2101 local_tls_type = elf_s390_local_got_tls_type (ibfd);
f41345a7
AK		 2102 s = htab->elf.sgot;
2103 srela = htab->elf.srelgot;
69fc87f1 2104 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 2105 {
0451c93c 2106 if (*local_got > 0)
a85d7ed0 2107 {
eea6121a
AM		 2108 *local_got = s->size;
2109 s->size += GOT_ENTRY_SIZE;
69fc87f1 2110 if (*local_tls_type == GOT_TLS_GD)
eea6121a 2111 s->size += GOT_ENTRY_SIZE;
0e1862bb 2112 if (bfd_link_pic (info))
eea6121a 2113 srela->size += sizeof (Elf32_External_Rela);
a85d7ed0
NC		 2114 }
2115 else
0451c93c
MS		 2116 *local_got = (bfd_vma) -1;
2117 }
470b557a
AK		 2118 local_plt = elf_s390_local_plt (ibfd);
2119 for (i = 0; i < symtab_hdr->sh_info; i++)
2120 {
2121 if (local_plt[i].plt.refcount > 0)
2122 {
2123 local_plt[i].plt.offset = htab->elf.iplt->size;
2124 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2125 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2126 htab->elf.irelplt->size += RELA_ENTRY_SIZE;
2127 }
2128 else
2129 local_plt[i].plt.offset = (bfd_vma) -1;
2130 }
0451c93c
MS		 2131 }
2132
69fc87f1
MS		 2133 if (htab->tls_ldm_got.refcount > 0)
2134 {
2135 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2136 relocs. */
f41345a7
AK		 2137 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2138 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2139 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
69fc87f1
MS		 2140 }
2141 else
2142 htab->tls_ldm_got.offset = -1;
2143
0451c93c
MS		 2144 /* Allocate global sym .plt and .got entries, and space for global
2145 sym dynamic relocs. */
2c3fc389 2146 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
0451c93c
MS		 2147
2148 /* We now have determined the sizes of the various dynamic sections.
2149 Allocate memory for them. */
b34976b6 2150 relocs = FALSE;
0451c93c
MS		 2151 for (s = dynobj->sections; s != NULL; s = s->next)
2152 {
2153 if ((s->flags & SEC_LINKER_CREATED) == 0)
2154 continue;
2155
f41345a7
AK		 2156 if (s == htab->elf.splt
2157 || s == htab->elf.sgot
2158 || s == htab->elf.sgotplt
470b557a
AK		 2159 || s == htab->sdynbss
2160 || s == htab->elf.iplt
2161 || s == htab->elf.igotplt
2162 || s == htab->irelifunc)
0451c93c
MS		 2163 {
2164 /* Strip this section if we don't need it; see the
2165 comment below. */
a85d7ed0 2166 }
0112cd26 2167 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 2168 {
eea6121a 2169 if (s->size != 0)
b34976b6 2170 relocs = TRUE;
ec338859 2171
0451c93c
MS		 2172 /* We use the reloc_count field as a counter if we need
2173 to copy relocs into the output file. */
2174 s->reloc_count = 0;
2175 }
2176 else
a85d7ed0
NC		 2177 {
2178 /* It's not one of our sections, so don't allocate space. */
2179 continue;
2180 }
2181
eea6121a 2182 if (s->size == 0)
a85d7ed0 2183 {
0451c93c
MS		 2184 /* If we don't need this section, strip it from the
2185 output file. This is to handle .rela.bss and
2186 .rela.plt. We must create it in
2187 create_dynamic_sections, because it must be created
2188 before the linker maps input sections to output
2189 sections. The linker does that before
2190 adjust_dynamic_symbol is called, and it is that
2191 function which decides whether anything needs to go
2192 into these sections. */
2193
8423293d 2194 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 2195 continue;
2196 }
2197
c456f082
AM		 2198 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2199 continue;
2200
0451c93c
MS		 2201 /* Allocate memory for the section contents. We use bfd_zalloc
2202 here in case unused entries are not reclaimed before the
2203 section's contents are written out. This should not happen,
2204 but this way if it does, we get a R_390_NONE reloc instead
2205 of garbage. */
eea6121a 2206 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 2207 if (s->contents == NULL)
b34976b6 2208 return FALSE;
a85d7ed0 2209 }
ec338859 2210
0451c93c 2211 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2212 {
2213 /* Add some entries to the .dynamic section. We fill in the
2214 values later, in elf_s390_finish_dynamic_sections, but we
2215 must add the entries now so that we get the correct size for
2216 the .dynamic section. The DT_DEBUG entry is filled in by the
2217 dynamic linker and used by the debugger. */
dc810e39 2218#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2219 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
ec338859 2220
0e1862bb 2221 if (bfd_link_executable (info))
a85d7ed0 2222 {
dc810e39 2223 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2224 return FALSE;
a85d7ed0 2225 }
ec338859 2226
f41345a7 2227 if (htab->elf.splt->size != 0)
a85d7ed0 2228 {
dc810e39
AM		 2229 if (!add_dynamic_entry (DT_PLTGOT, 0)
2230 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2231 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2232 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2233 return FALSE;
a85d7ed0 2234 }
ec338859 2235
a85d7ed0 2236 if (relocs)
26e41594
AM		 2237 {
2238 if (!add_dynamic_entry (DT_RELA, 0)
2239 || !add_dynamic_entry (DT_RELASZ, 0)
2240 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 2241 return FALSE;
a85d7ed0 2242
0451c93c
MS		 2243 /* If any dynamic relocs apply to a read-only section,
2244 then we need a DT_TEXTREL entry. */
248866a8 2245 if ((info->flags & DF_TEXTREL) == 0)
2c3fc389 2246 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
ec338859 2247
0451c93c
MS		 2248 if ((info->flags & DF_TEXTREL) != 0)
2249 {
2250 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2251 return FALSE;
0451c93c 2252 }
a85d7ed0
NC		 2253 }
2254 }
dc810e39 2255#undef add_dynamic_entry
ec338859 2256
b34976b6 2257 return TRUE;
a85d7ed0
NC		 2258}
2259
69fc87f1
MS		 2260/* Return the base VMA address which should be subtracted from real addresses
2261 when resolving @dtpoff relocation.
2262 This is PT_TLS segment p_vaddr. */
2263
2264static bfd_vma
2c3fc389 2265dtpoff_base (struct bfd_link_info *info)
69fc87f1 2266{
e1918d23
AM		 2267 /* If tls_sec is NULL, we should have signalled an error already. */
2268 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2269 return 0;
e1918d23 2270 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2271}
2272
2273/* Return the relocation value for @tpoff relocation
2274 if STT_TLS virtual address is ADDRESS. */
2275
2276static bfd_vma
2c3fc389 2277tpoff (struct bfd_link_info *info, bfd_vma address)
69fc87f1 2278{
e1918d23 2279 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2280
e1918d23
AM		 2281 /* If tls_sec is NULL, we should have signalled an error already. */
2282 if (htab->tls_sec == NULL)
69fc87f1 2283 return 0;
e1918d23 2284 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2285}
2286
2287/* Complain if TLS instruction relocation is against an invalid
2288 instruction. */
2289
2290static void
2c3fc389
NC		 2291invalid_tls_insn (bfd *input_bfd,
2292 asection *input_section,
2293 Elf_Internal_Rela *rel)
69fc87f1
MS		 2294{
2295 reloc_howto_type *howto;
2296
2297 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2298 (*_bfd_error_handler)
d003868e
AM		 2299 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2300 input_bfd,
2301 input_section,
69fc87f1
MS		 2302 (long) rel->r_offset,
2303 howto->name);
77df2968 2304 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2305}
2306
a85d7ed0
NC		 2307/* Relocate a 390 ELF section. */
2308
b34976b6 2309static bfd_boolean
2c3fc389
NC		 2310elf_s390_relocate_section (bfd *output_bfd,
2311 struct bfd_link_info *info,
2312 bfd *input_bfd,
2313 asection *input_section,
2314 bfd_byte *contents,
2315 Elf_Internal_Rela *relocs,
2316 Elf_Internal_Sym *local_syms,
2317 asection **local_sections)
a85d7ed0 2318{
0451c93c 2319 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2320 Elf_Internal_Shdr *symtab_hdr;
2321 struct elf_link_hash_entry **sym_hashes;
2322 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2323 Elf_Internal_Rela *rel;
2324 Elf_Internal_Rela *relend;
2325
0ffa91dd
NC		 2326 BFD_ASSERT (is_s390_elf (input_bfd));
2327
0451c93c 2328 htab = elf_s390_hash_table (info);
0ffa91dd 2329 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2330 sym_hashes = elf_sym_hashes (input_bfd);
2331 local_got_offsets = elf_local_got_offsets (input_bfd);
2332
a85d7ed0
NC		 2333 rel = relocs;
2334 relend = relocs + input_section->reloc_count;
2335 for (; rel < relend; rel++)
2336 {
5236c819 2337 unsigned int r_type;
a85d7ed0
NC		 2338 reloc_howto_type *howto;
2339 unsigned long r_symndx;
2340 struct elf_link_hash_entry *h;
2341 Elf_Internal_Sym *sym;
2342 asection *sec;
0451c93c 2343 bfd_vma off;
a85d7ed0 2344 bfd_vma relocation;
b34976b6 2345 bfd_boolean unresolved_reloc;
a85d7ed0 2346 bfd_reloc_status_type r;
69fc87f1 2347 int tls_type;
470b557a 2348 asection *base_got = htab->elf.sgot;
ec338859 2349
a85d7ed0
NC		 2350 r_type = ELF32_R_TYPE (rel->r_info);
2351 if (r_type == (int) R_390_GNU_VTINHERIT
26e41594
AM		 2352 || r_type == (int) R_390_GNU_VTENTRY)
2353 continue;
5236c819 2354 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2355 {
2356 bfd_set_error (bfd_error_bad_value);
b34976b6 2357 return FALSE;
a85d7ed0 2358 }
ec338859 2359
b491616a 2360 howto = elf_howto_table + r_type;
a85d7ed0 2361 r_symndx = ELF32_R_SYM (rel->r_info);
5236c819 2362
a85d7ed0
NC		 2363 h = NULL;
2364 sym = NULL;
2365 sec = NULL;
b34976b6 2366 unresolved_reloc = FALSE;
a85d7ed0
NC		 2367 if (r_symndx < symtab_hdr->sh_info)
2368 {
2369 sym = local_syms + r_symndx;
2370 sec = local_sections[r_symndx];
470b557a
AK		 2371 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2372 {
2373 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2374 if (local_plt == NULL)
2375 return FALSE;
2376
2377 /* Address of the PLT slot. */
2378 relocation = (htab->elf.iplt->output_section->vma
2379 + htab->elf.iplt->output_offset
2380 + local_plt[r_symndx].plt.offset);
2381
2382 switch (r_type)
2383 {
31db78f6
AK		 2384 case R_390_PLTOFF16:
2385 case R_390_PLTOFF32:
2386 relocation -= htab->elf.sgot->output_section->vma;
2387 break;
470b557a
AK		 2388 case R_390_GOTPLT12:
2389 case R_390_GOTPLT16:
2390 case R_390_GOTPLT20:
2391 case R_390_GOTPLT32:
2392 case R_390_GOTPLTENT:
2393 case R_390_GOT12:
2394 case R_390_GOT16:
2395 case R_390_GOT20:
2396 case R_390_GOT32:
2397 case R_390_GOTENT:
2398 {
2399 /* Write the PLT slot address into the GOT slot. */
2400 bfd_put_32 (output_bfd, relocation,
2401 htab->elf.sgot->contents +
2402 local_got_offsets[r_symndx]);
2403 relocation = (local_got_offsets[r_symndx] +
2404 htab->elf.sgot->output_offset);
2405
2406 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2407 relocation += htab->elf.sgot->output_section->vma;
2408 break;
2409 }
2410 default:
2411 break;
2412 }
2413 /* The output section is needed later in
2414 finish_dynamic_section when creating the dynamic
2415 relocation. */
2416 local_plt[r_symndx].sec = sec;
2417 goto do_relocation;
2418 }
2419 else
2420 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2421 }
2422 else
2423 {
560e09e9 2424 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2425 bfd_boolean ignored ATTRIBUTE_UNUSED;
ec338859 2426
b2a8e766
AM		 2427 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2428 r_symndx, symtab_hdr, sym_hashes,
2429 h, sec, relocation,
62d887d4 2430 unresolved_reloc, warned, ignored);
a85d7ed0 2431 }
ec338859 2432
dbaa2011 2433 if (sec != NULL && discarded_section (sec))
e4067dbb 2434 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2435 rel, 1, relend, howto, 0, contents);
ab96bf03 2436
0e1862bb 2437 if (bfd_link_relocatable (info))
ab96bf03
AM		 2438 continue;
2439
a85d7ed0
NC		 2440 switch (r_type)
2441 {
5236c819
MS		 2442 case R_390_GOTPLT12:
2443 case R_390_GOTPLT16:
bd1ea41b 2444 case R_390_GOTPLT20:
5236c819
MS		 2445 case R_390_GOTPLT32:
2446 case R_390_GOTPLTENT:
2447 /* There are three cases for a GOTPLT relocation. 1) The
2448 relocation is against the jump slot entry of a plt that
2449 will get emitted to the output file. 2) The relocation
2450 is against the jump slot of a plt entry that has been
2451 removed. elf_s390_adjust_gotplt has created a GOT entry
2452 as replacement. 3) The relocation is against a local symbol.
2453 Cases 2) and 3) are the same as the GOT relocation code
2454 so we just have to test for case 1 and fall through for
2455 the other two. */
2456 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2457 {
2458 bfd_vma plt_index;
2459
470b557a
AK		 2460 if (s390_is_ifunc_symbol_p (h))
2461 {
2462 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2463 relocation = (plt_index * GOT_ENTRY_SIZE +
2464 htab->elf.igotplt->output_offset);
2465 if (r_type == R_390_GOTPLTENT)
2466 relocation += htab->elf.igotplt->output_section->vma;
2467 }
2468 else
2469 {
2470 /* Calc. index no.
2471 Current offset - size first entry / entry size. */
2472 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2473 PLT_ENTRY_SIZE;
2474
2475 /* Offset in GOT is PLT index plus GOT headers(3)
2476 times 4, addr & GOT addr. */
2477 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2478 if (r_type == R_390_GOTPLTENT)
2479 relocation += htab->elf.sgot->output_section->vma;
2480 }
5236c819
MS		 2481 unresolved_reloc = FALSE;
2482
5236c819
MS		 2483 }
2484 /* Fall through. */
2485
26e41594
AM		 2486 case R_390_GOT12:
2487 case R_390_GOT16:
bd1ea41b 2488 case R_390_GOT20:
26e41594 2489 case R_390_GOT32:
befc3abb 2490 case R_390_GOTENT:
26e41594
AM		 2491 /* Relocation is to the entry for this symbol in the global
2492 offset table. */
470b557a 2493 if (base_got == NULL)
0451c93c 2494 abort ();
ec338859 2495
26e41594
AM		 2496 if (h != NULL)
2497 {
b34976b6 2498 bfd_boolean dyn;
ec338859 2499
26e41594 2500 off = h->got.offset;
0451c93c 2501 dyn = htab->elf.dynamic_sections_created;
470b557a
AK		 2502
2503 if (s390_is_ifunc_symbol_p (h))
2504 {
2505 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2506 if (off == (bfd_vma)-1)
2507 {
2508 /* No explicit GOT usage so redirect to the
2509 got.iplt slot. */
2510 base_got = htab->elf.igotplt;
2511 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2512 }
2513 else
2514 {
2515 /* Explicit GOT slots must contain the address
2516 of the PLT slot. This will be handled in
2517 finish_dynamic_symbol. */
2518 }
2519 }
0e1862bb
L		 2520 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2521 bfd_link_pic (info),
2522 h)
2523 || (bfd_link_pic (info)
470b557a
AK		 2524 && SYMBOL_REFERENCES_LOCAL (info, h))
2525 || (ELF_ST_VISIBILITY (h->other)
2526 && h->root.type == bfd_link_hash_undefweak))
2527
26e41594
AM		 2528 {
2529 /* This is actually a static link, or it is a
2530 -Bsymbolic link and the symbol is defined
2531 locally, or the symbol was forced to be local
2532 because of a version file. We must initialize
2533 this entry in the global offset table. Since the
2534 offset must always be a multiple of 2, we use the
2535 least significant bit to record whether we have
2536 initialized it already.
2537
2538 When doing a dynamic link, we create a .rel.got
2539 relocation entry to initialize the value. This
2540 is done in the finish_dynamic_symbol routine. */
2541 if ((off & 1) != 0)
2542 off &= ~1;
2543 else
2544 {
a85d7ed0 2545 bfd_put_32 (output_bfd, relocation,
470b557a 2546 base_got->contents + off);
26e41594
AM		 2547 h->got.offset |= 1;
2548 }
a63cc5f7
AK		 2549
2550 if ((h->def_regular
0e1862bb 2551 && bfd_link_pic (info)
a63cc5f7
AK		 2552 && SYMBOL_REFERENCES_LOCAL (info, h))
2553 /* lrl rx,sym@GOTENT -> larl rx, sym */
2554 && ((r_type == R_390_GOTENT
2555 && (bfd_get_16 (input_bfd,
2556 contents + rel->r_offset - 2)
2557 & 0xff0f) == 0xc40d)
2558 /* ly rx, sym@GOT(r12) -> larl rx, sym */
2559 || (r_type == R_390_GOT20
2560 && (bfd_get_32 (input_bfd,
2561 contents + rel->r_offset - 2)
2562 & 0xff00f000) == 0xe300c000
2563 && bfd_get_8 (input_bfd,
2564 contents + rel->r_offset + 3) == 0x58)))
2565 {
2566 unsigned short new_insn =
2567 (0xc000 | (bfd_get_8 (input_bfd,
2568 contents + rel->r_offset - 1) & 0xf0));
2569 bfd_put_16 (output_bfd, new_insn,
2570 contents + rel->r_offset - 2);
2571 r_type = R_390_PC32DBL;
2572 rel->r_addend = 2;
2573 howto = elf_howto_table + r_type;
2574 relocation = h->root.u.def.value
2575 + h->root.u.def.section->output_section->vma
2576 + h->root.u.def.section->output_offset;
2577 goto do_relocation;
2578 }
26e41594 2579 }
0451c93c 2580 else
b34976b6 2581 unresolved_reloc = FALSE;
26e41594
AM		 2582 }
2583 else
2584 {
0451c93c
MS		 2585 if (local_got_offsets == NULL)
2586 abort ();
a85d7ed0 2587
26e41594 2588 off = local_got_offsets[r_symndx];
a85d7ed0 2589
26e41594
AM		 2590 /* The offset must always be a multiple of 4. We use
2591 the least significant bit to record whether we have
2592 already generated the necessary reloc. */
2593 if ((off & 1) != 0)
2594 off &= ~1;
2595 else
2596 {
2597 bfd_put_32 (output_bfd, relocation,
f41345a7 2598 htab->elf.sgot->contents + off);
a85d7ed0 2599
0e1862bb 2600 if (bfd_link_pic (info))
26e41594
AM		 2601 {
2602 asection *srelgot;
2603 Elf_Internal_Rela outrel;
947216bf 2604 bfd_byte *loc;
a85d7ed0 2605
f41345a7 2606 srelgot = htab->elf.srelgot;
0451c93c
MS		 2607 if (srelgot == NULL)
2608 abort ();
a85d7ed0 2609
f41345a7
AK		 2610 outrel.r_offset = (htab->elf.sgot->output_section->vma
2611 + htab->elf.sgot->output_offset
26e41594
AM		 2612 + off);
2613 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2614 outrel.r_addend = relocation;
947216bf
AM		 2615 loc = srelgot->contents;
2616 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
26e41594
AM		 2617 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2618 }
a85d7ed0 2619
26e41594
AM		 2620 local_got_offsets[r_symndx] |= 1;
2621 }
2622 }
a85d7ed0 2623
0451c93c
MS		 2624 if (off >= (bfd_vma) -2)
2625 abort ();
a85d7ed0 2626
470b557a 2627 relocation = base_got->output_offset + off;
befc3abb 2628
ae9a127f
NC		 2629 /* For @GOTENT the relocation is against the offset between
2630 the instruction and the symbols entry in the GOT and not
2631 between the start of the GOT and the symbols entry. We
2632 add the vma of the GOT to get the correct value. */
5236c819
MS		 2633 if ( r_type == R_390_GOTENT
2634 || r_type == R_390_GOTPLTENT)
470b557a 2635 relocation += base_got->output_section->vma;
befc3abb 2636
26e41594 2637 break;
dc810e39 2638
5236c819 2639 case R_390_GOTOFF16:
26e41594
AM		 2640 case R_390_GOTOFF32:
2641 /* Relocation is relative to the start of the global offset
2642 table. */
2643
2644 /* Note that sgot->output_offset is not involved in this
2645 calculation. We always want the start of .got. If we
2646 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2647 permitted by the ABI, we might have to change this
2648 calculation. */
f41345a7 2649 relocation -= htab->elf.sgot->output_section->vma;
26e41594
AM		 2650 break;
2651
2652 case R_390_GOTPC:
befc3abb 2653 case R_390_GOTPCDBL:
26e41594 2654 /* Use global offset table as symbol value. */
f41345a7 2655 relocation = htab->elf.sgot->output_section->vma;
b34976b6 2656 unresolved_reloc = FALSE;
26e41594 2657 break;
a85d7ed0 2658
fb798c50 2659 case R_390_PLT12DBL:
26e41594 2660 case R_390_PLT16DBL:
fb798c50 2661 case R_390_PLT24DBL:
26e41594
AM		 2662 case R_390_PLT32DBL:
2663 case R_390_PLT32:
2664 /* Relocation is to the entry for this symbol in the
2665 procedure linkage table. */
a85d7ed0 2666
26e41594
AM		 2667 /* Resolve a PLT32 reloc against a local symbol directly,
2668 without using the procedure linkage table. */
2669 if (h == NULL)
2670 break;
a85d7ed0 2671
26e41594 2672 if (h->plt.offset == (bfd_vma) -1
470b557a 2673 || (htab->elf.splt == NULL && htab->elf.iplt == NULL))
26e41594
AM		 2674 {
2675 /* We didn't make a PLT entry for this symbol. This
2676 happens when statically linking PIC code, or when
2677 using -Bsymbolic. */
2678 break;
2679 }
2680
470b557a
AK		 2681 if (s390_is_ifunc_symbol_p (h))
2682 relocation = (htab->elf.iplt->output_section->vma
2683 + htab->elf.iplt->output_offset
2684 + h->plt.offset);
2685 else
2686 relocation = (htab->elf.splt->output_section->vma
2687 + htab->elf.splt->output_offset
2688 + h->plt.offset);
b34976b6 2689 unresolved_reloc = FALSE;
26e41594 2690 break;
a85d7ed0 2691
5236c819
MS		 2692 case R_390_PLTOFF16:
2693 case R_390_PLTOFF32:
26e41594
AM		 2694 /* Relocation is to the entry for this symbol in the
2695 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2696
2697 /* For local symbols or if we didn't make a PLT entry for
2698 this symbol resolve the symbol directly. */
31db78f6 2699 if (h == NULL
5236c819 2700 || h->plt.offset == (bfd_vma) -1
31db78f6 2701 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
5236c819 2702 {
f41345a7 2703 relocation -= htab->elf.sgot->output_section->vma;
5236c819
MS		 2704 break;
2705 }
2706
470b557a
AK		 2707 if (s390_is_ifunc_symbol_p (h))
2708 relocation = (htab->elf.iplt->output_section->vma
2709 + htab->elf.iplt->output_offset
2710 + h->plt.offset
2711 - htab->elf.sgot->output_section->vma);
2712 else
2713 relocation = (htab->elf.splt->output_section->vma
2714 + htab->elf.splt->output_offset
2715 + h->plt.offset
2716 - htab->elf.sgot->output_section->vma);
5236c819 2717 unresolved_reloc = FALSE;
26e41594
AM		 2718 break;
2719
2720 case R_390_8:
2721 case R_390_16:
2722 case R_390_32:
2723 case R_390_PC16:
fb798c50 2724 case R_390_PC12DBL:
26e41594 2725 case R_390_PC16DBL:
fb798c50 2726 case R_390_PC24DBL:
26e41594
AM		 2727 case R_390_PC32DBL:
2728 case R_390_PC32:
470b557a
AK		 2729 if (h != NULL
2730 && s390_is_ifunc_symbol_p (h)
2731 && h->def_regular)
2732 {
0e1862bb 2733 if (!bfd_link_pic (info) || !h->non_got_ref)
470b557a
AK		 2734 {
2735 /* For a non-shared object STT_GNU_IFUNC symbol must
2736 go through PLT. */
2737 relocation = (htab->elf.iplt->output_section->vma
2738 + htab->elf.iplt->output_offset
2739 + h ->plt.offset);
2740 goto do_relocation;
2741 }
2742 else
2743 {
2744 /* For shared objects a runtime relocation is needed. */
2745
2746 Elf_Internal_Rela outrel;
2747 asection *sreloc;
2748
2749 /* Need a dynamic relocation to get the real function
2750 address. */
2751 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2752 info,
2753 input_section,
2754 rel->r_offset);
2755 if (outrel.r_offset == (bfd_vma) -1
2756 || outrel.r_offset == (bfd_vma) -2)
2757 abort ();
2758
2759 outrel.r_offset += (input_section->output_section->vma
2760 + input_section->output_offset);
2761
2762 if (h->dynindx == -1
2763 || h->forced_local
0e1862bb 2764 || bfd_link_executable (info))
470b557a
AK		 2765 {
2766 /* This symbol is resolved locally. */
2767 outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
2768 outrel.r_addend = (h->root.u.def.value
2769 + h->root.u.def.section->output_section->vma
2770 + h->root.u.def.section->output_offset);
2771 }
2772 else
2773 {
2774 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2775 outrel.r_addend = 0;
2776 }
2777
2778 sreloc = htab->elf.irelifunc;
2779 elf_append_rela (output_bfd, sreloc, &outrel);
2780
2781 /* If this reloc is against an external symbol, we
2782 do not want to fiddle with the addend. Otherwise,
2783 we need to include the symbol value so that it
2784 becomes an addend for the dynamic reloc. For an
2785 internal symbol, we have updated addend. */
2786 continue;
2787 }
2788 }
2789
b1e24c02 2790 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2791 break;
2792
0e1862bb 2793 if ((bfd_link_pic (info)
82058a73
MS		 2794 && (h == NULL
2795 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2796 || h->root.type != bfd_link_hash_undefweak)
0451c93c 2797 && ((r_type != R_390_PC16
fb798c50 2798 && r_type != R_390_PC12DBL
0451c93c 2799 && r_type != R_390_PC16DBL
fb798c50 2800 && r_type != R_390_PC24DBL
befc3abb 2801 && r_type != R_390_PC32DBL
0451c93c 2802 && r_type != R_390_PC32)
8c21ca21 2803 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810 2804 || (ELIMINATE_COPY_RELOCS
0e1862bb 2805 && !bfd_link_pic (info)
0451c93c
MS		 2806 && h != NULL
2807 && h->dynindx != -1
f5385ebf
AM		 2808 && !h->non_got_ref
2809 && ((h->def_dynamic
2810 && !h->def_regular)
0451c93c
MS		 2811 || h->root.type == bfd_link_hash_undefweak
2812 || h->root.type == bfd_link_hash_undefined)))
26e41594
AM		 2813 {
2814 Elf_Internal_Rela outrel;
2815 bfd_boolean skip, relocate;
0451c93c 2816 asection *sreloc;
947216bf 2817 bfd_byte *loc;
ec338859 2818
0451c93c
MS		 2819 /* When generating a shared object, these relocations
2820 are copied into the output file to be resolved at run
2821 time. */
ec338859 2822
26e41594
AM		 2823 skip = FALSE;
2824 relocate = FALSE;
ec338859 2825
c629eae0
JJ		 2826 outrel.r_offset =
2827 _bfd_elf_section_offset (output_bfd, info, input_section,
2828 rel->r_offset);
2829 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2830 skip = TRUE;
0bb2d96a 2831 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2832 skip = TRUE, relocate = TRUE;
26e41594
AM		 2833 outrel.r_offset += (input_section->output_section->vma
2834 + input_section->output_offset);
ec338859 2835
26e41594 2836 if (skip)
0bb2d96a 2837 memset (&outrel, 0, sizeof outrel);
26e41594 2838 else if (h != NULL
0451c93c
MS		 2839 && h->dynindx != -1
2840 && (r_type == R_390_PC16
fb798c50 2841 || r_type == R_390_PC12DBL
0451c93c 2842 || r_type == R_390_PC16DBL
fb798c50 2843 || r_type == R_390_PC24DBL
befc3abb 2844 || r_type == R_390_PC32DBL
0451c93c 2845 || r_type == R_390_PC32
0e1862bb 2846 || !bfd_link_pic (info)
8c21ca21 2847 || !SYMBOLIC_BIND (info, h)
f5385ebf 2848 || !h->def_regular))
26e41594
AM		 2849 {
2850 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
27018c3f 2851 outrel.r_addend = rel->r_addend;
26e41594
AM		 2852 }
2853 else
2854 {
0451c93c 2855 /* This symbol is local, or marked to become local. */
90ced0dd 2856 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2857 if (r_type == R_390_32)
2858 {
2859 relocate = TRUE;
2860 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2861 }
2862 else
2863 {
2864 long sindx;
2865
90ced0dd 2866 if (bfd_is_abs_section (sec))
b5727d75
MS		 2867 sindx = 0;
2868 else if (sec == NULL || sec->owner == NULL)
2869 {
2870 bfd_set_error(bfd_error_bad_value);
2871 return FALSE;
2872 }
2873 else
2874 {
2875 asection *osec;
2876
2877 osec = sec->output_section;
2878 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2879 if (sindx == 0)
2880 {
2881 osec = htab->elf.text_index_section;
2882 sindx = elf_section_data (osec)->dynindx;
2883 }
2884 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2885
2886 /* We are turning this relocation into one
2887 against a section symbol, so subtract out
2888 the output section's address but not the
2889 offset of the input section in the output
2890 section. */
90ced0dd 2891 outrel.r_addend -= osec->vma;
b5727d75
MS		 2892 }
2893 outrel.r_info = ELF32_R_INFO (sindx, r_type);
b5727d75 2894 }
26e41594 2895 }
ec338859 2896
0451c93c
MS		 2897 sreloc = elf_section_data (input_section)->sreloc;
2898 if (sreloc == NULL)
2899 abort ();
ec338859 2900
947216bf
AM		 2901 loc = sreloc->contents;
2902 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 2903 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
ec338859 2904
26e41594
AM		 2905 /* If this reloc is against an external symbol, we do
2906 not want to fiddle with the addend. Otherwise, we
2907 need to include the symbol value so that it becomes
2908 an addend for the dynamic reloc. */
2909 if (! relocate)
2910 continue;
2911 }
0451c93c 2912 break;
ec338859 2913
69fc87f1
MS		 2914 /* Relocations for tls literal pool entries. */
2915 case R_390_TLS_IE32:
0e1862bb 2916 if (bfd_link_pic (info))
69fc87f1
MS		 2917 {
2918 Elf_Internal_Rela outrel;
2919 asection *sreloc;
2920 bfd_byte *loc;
2921
2922 outrel.r_offset = rel->r_offset
2923 + input_section->output_section->vma
2924 + input_section->output_offset;
2925 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2926 sreloc = elf_section_data (input_section)->sreloc;
2927 if (sreloc == NULL)
2928 abort ();
2929 loc = sreloc->contents;
2930 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2931 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2932 }
ae9a127f 2933 /* Fall through. */
69fc87f1
MS		 2934
2935 case R_390_TLS_GD32:
2936 case R_390_TLS_GOTIE32:
2937 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2938 tls_type = GOT_UNKNOWN;
2939 if (h == NULL && local_got_offsets)
2940 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2941 else if (h != NULL)
2942 {
2943 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb
L		 2944 if (!bfd_link_pic (info)
2945 && h->dynindx == -1
2946 && tls_type >= GOT_TLS_IE)
69fc87f1
MS		 2947 r_type = R_390_TLS_LE32;
2948 }
2949 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2950 r_type = R_390_TLS_IE32;
2951
2952 if (r_type == R_390_TLS_LE32)
2953 {
2954 /* This relocation gets optimized away by the local exec
2955 access optimization. */
2956 BFD_ASSERT (! unresolved_reloc);
2957 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2958 contents + rel->r_offset);
2959 continue;
2960 }
2961
f41345a7 2962 if (htab->elf.sgot == NULL)
69fc87f1
MS		 2963 abort ();
2964
2965 if (h != NULL)
2966 off = h->got.offset;
2967 else
2968 {
2969 if (local_got_offsets == NULL)
2970 abort ();
2971
2972 off = local_got_offsets[r_symndx];
2973 }
2974
2975 emit_tls_relocs:
2976
2977 if ((off & 1) != 0)
2978 off &= ~1;
26e41594 2979 else
69fc87f1
MS		 2980 {
2981 Elf_Internal_Rela outrel;
2982 bfd_byte *loc;
2983 int dr_type, indx;
2984
f41345a7 2985 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 2986 abort ();
2987
f41345a7
AK		 2988 outrel.r_offset = (htab->elf.sgot->output_section->vma
2989 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 2990
2991 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2992 if (r_type == R_390_TLS_GD32)
2993 dr_type = R_390_TLS_DTPMOD;
2994 else
2995 dr_type = R_390_TLS_TPOFF;
2996 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2997 outrel.r_addend = relocation - dtpoff_base (info);
2998 else
2999 outrel.r_addend = 0;
3000 outrel.r_info = ELF32_R_INFO (indx, dr_type);
f41345a7
AK		 3001 loc = htab->elf.srelgot->contents;
3002 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3003 * sizeof (Elf32_External_Rela);
3004 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3005
3006 if (r_type == R_390_TLS_GD32)
3007 {
3008 if (indx == 0)
3009 {
26e41594 3010 BFD_ASSERT (! unresolved_reloc);
69fc87f1
MS		 3011 bfd_put_32 (output_bfd,
3012 relocation - dtpoff_base (info),
f41345a7 3013 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3014 }
3015 else
3016 {
3017 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
3018 outrel.r_offset += GOT_ENTRY_SIZE;
3019 outrel.r_addend = 0;
f41345a7 3020 htab->elf.srelgot->reloc_count++;
69fc87f1
MS		 3021 loc += sizeof (Elf32_External_Rela);
3022 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3023 }
3024 }
3025
3026 if (h != NULL)
3027 h->got.offset |= 1;
3028 else
3029 local_got_offsets[r_symndx] |= 1;
3030 }
3031
3032 if (off >= (bfd_vma) -2)
3033 abort ();
3034 if (r_type == ELF32_R_TYPE (rel->r_info))
3035 {
f41345a7 3036 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3037 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
f41345a7 3038 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3039 unresolved_reloc = FALSE;
3040 }
3041 else
3042 {
f41345a7 3043 bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off,
69fc87f1
MS		 3044 contents + rel->r_offset);
3045 continue;
3046 }
3047 break;
3048
3049 case R_390_TLS_GOTIE12:
bd1ea41b 3050 case R_390_TLS_GOTIE20:
69fc87f1
MS		 3051 case R_390_TLS_IEENT:
3052 if (h == NULL)
3053 {
3054 if (local_got_offsets == NULL)
3055 abort();
3056 off = local_got_offsets[r_symndx];
0e1862bb 3057 if (bfd_link_pic (info))
69fc87f1
MS		 3058 goto emit_tls_relocs;
3059 }
3060 else
3061 {
3062 off = h->got.offset;
3063 tls_type = elf_s390_hash_entry(h)->tls_type;
0e1862bb
L		 3064 if (bfd_link_pic (info)
3065 || h->dynindx != -1
3066 || tls_type < GOT_TLS_IE)
69fc87f1
MS		 3067 goto emit_tls_relocs;
3068 }
3069
f41345a7 3070 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3071 abort ();
3072
3073 BFD_ASSERT (! unresolved_reloc);
3074 bfd_put_32 (output_bfd, -tpoff (info, relocation),
f41345a7
AK		 3075 htab->elf.sgot->contents + off);
3076 relocation = htab->elf.sgot->output_offset + off;
69fc87f1 3077 if (r_type == R_390_TLS_IEENT)
f41345a7 3078 relocation += htab->elf.sgot->output_section->vma;
69fc87f1
MS		 3079 unresolved_reloc = FALSE;
3080 break;
3081
3082 case R_390_TLS_LDM32:
0e1862bb 3083 if (! bfd_link_pic (info))
69fc87f1
MS		 3084 /* The literal pool entry this relocation refers to gets ignored
3085 by the optimized code of the local exec model. Do nothing
3086 and the value will turn out zero. */
3087 continue;
3088
f41345a7 3089 if (htab->elf.sgot == NULL)
69fc87f1
MS		 3090 abort ();
3091
3092 off = htab->tls_ldm_got.offset;
3093 if (off & 1)
3094 off &= ~1;
3095 else
3096 {
3097 Elf_Internal_Rela outrel;
3098 bfd_byte *loc;
3099
f41345a7 3100 if (htab->elf.srelgot == NULL)
69fc87f1
MS		 3101 abort ();
3102
f41345a7
AK		 3103 outrel.r_offset = (htab->elf.sgot->output_section->vma
3104 + htab->elf.sgot->output_offset + off);
69fc87f1
MS		 3105
3106 bfd_put_32 (output_bfd, 0,
f41345a7 3107 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
69fc87f1
MS		 3108 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
3109 outrel.r_addend = 0;
f41345a7
AK		 3110 loc = htab->elf.srelgot->contents;
3111 loc += htab->elf.srelgot->reloc_count++
69fc87f1
MS		 3112 * sizeof (Elf32_External_Rela);
3113 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3114 htab->tls_ldm_got.offset |= 1;
3115 }
f41345a7 3116 relocation = htab->elf.sgot->output_offset + off;
26e41594 3117 unresolved_reloc = FALSE;
69fc87f1
MS		 3118 break;
3119
3120 case R_390_TLS_LE32:
3cbc1e5e 3121 if (bfd_link_dll (info))
69fc87f1
MS		 3122 {
3123 /* Linking a shared library with non-fpic code requires
3124 a R_390_TLS_TPOFF relocation. */
3125 Elf_Internal_Rela outrel;
3126 asection *sreloc;
3127 bfd_byte *loc;
3128 int indx;
3129
3130 outrel.r_offset = rel->r_offset
3131 + input_section->output_section->vma
3132 + input_section->output_offset;
3133 if (h != NULL && h->dynindx != -1)
3134 indx = h->dynindx;
3135 else
3136 indx = 0;
3137 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
3138 if (indx == 0)
3139 outrel.r_addend = relocation - dtpoff_base (info);
3140 else
3141 outrel.r_addend = 0;
3142 sreloc = elf_section_data (input_section)->sreloc;
3143 if (sreloc == NULL)
3144 abort ();
3145 loc = sreloc->contents;
3146 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3147 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3148 }
3149 else
3150 {
3151 BFD_ASSERT (! unresolved_reloc);
3152 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3153 contents + rel->r_offset);
3154 }
3155 continue;
3156
3157 case R_390_TLS_LDO32:
0e1862bb 3158 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
69fc87f1
MS		 3159 relocation -= dtpoff_base (info);
3160 else
3161 /* When converting LDO to LE, we must negate. */
3162 relocation = -tpoff (info, relocation);
3163 break;
3164
3165 /* Relocations for tls instructions. */
3166 case R_390_TLS_LOAD:
3167 case R_390_TLS_GDCALL:
3168 case R_390_TLS_LDCALL:
3169 tls_type = GOT_UNKNOWN;
3170 if (h == NULL && local_got_offsets)
3171 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3172 else if (h != NULL)
3173 tls_type = elf_s390_hash_entry(h)->tls_type;
3174
3175 if (tls_type == GOT_TLS_GD)
3176 continue;
3177
3178 if (r_type == R_390_TLS_LOAD)
3179 {
0e1862bb 3180 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
69fc87f1
MS		 3181 {
3182 /* IE->LE transition. Four valid cases:
3183 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
3184 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
3185 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
3186 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3187 unsigned int insn, ry;
3188
3189 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3190 ry = 0;
3191 if ((insn & 0xff00f000) == 0x58000000)
3192 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
3193 ry = (insn & 0x000f0000);
3194 else if ((insn & 0xff0f0000) == 0x58000000)
3195 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
3196 ry = (insn & 0x0000f000) << 4;
3197 else if ((insn & 0xff00f000) == 0x5800c000)
3198 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
3199 ry = (insn & 0x000f0000);
3200 else if ((insn & 0xff0f0000) == 0x580c0000)
3201 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3202 ry = (insn & 0x0000f000) << 4;
3203 else
3204 invalid_tls_insn (input_bfd, input_section, rel);
3205 insn = 0x18000700 | (insn & 0x00f00000) | ry;
3206 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3207 }
3208 }
3209 else if (r_type == R_390_TLS_GDCALL)
3210 {
3211 unsigned int insn;
3212
3213 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3214 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 3215 (insn & 0xffff0000) != 0xc0e50000 &&
3216 (insn & 0xff000000) != 0x0d000000)
69fc87f1 3217 invalid_tls_insn (input_bfd, input_section, rel);
0e1862bb 3218 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
77df2968 3219 {
d0ddfe27
AK		 3220 if ((insn & 0xff000000) == 0x0d000000)
3221 {
3222 /* GD->LE transition.
3223 basr rx, ry -> nopr r7 */
3224 insn = 0x07070000 | (insn & 0xffff);
3225 }
3226 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 3227 {
3228 /* GD->LE transition.
3229 bas %r14,0(%rx,%r13) -> bc 0,0 */
3230 insn = 0x47000000;
3231 }
3232 else
3233 {
3234 /* GD->LE transition.
d0ddfe27 3235 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 3236 insn = 0xc0040000;
3237 bfd_put_16 (output_bfd, 0x0000,
3238 contents + rel->r_offset + 4);
3239 }
3240 }
69fc87f1 3241 else
77df2968 3242 {
d0ddfe27
AK		 3243 /* If basr is used in the pic case to invoke
3244 _tls_get_offset, something went wrong before. */
3245 if ((insn & 0xff000000) == 0x0d000000)
3246 invalid_tls_insn (input_bfd, input_section, rel);
3247
77df2968
MS		 3248 if ((insn & 0xff000000) == 0x4d000000)
3249 {
3250 /* GD->IE transition.
3251 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3252 insn = 0x5822c000;
3253 }
3254 else
3255 {
3256 /* GD->IE transition.
3257 brasl %r14,__tls_get_addr@plt ->
3258 l %r2,0(%r2,%r12) ; bcr 0,0 */
3259 insn = 0x5822c000;
3260 bfd_put_16 (output_bfd, 0x0700,
3261 contents + rel->r_offset + 4);
3262 }
3263 }
69fc87f1
MS		 3264 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3265 }
3266 else if (r_type == R_390_TLS_LDCALL)
3267 {
0e1862bb 3268 if (!bfd_link_pic (info))
69fc87f1
MS		 3269 {
3270 unsigned int insn;
3271
3272 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
77df2968 3273 if ((insn & 0xff000fff) != 0x4d000000 &&
d0ddfe27
AK		 3274 (insn & 0xffff0000) != 0xc0e50000 &&
3275 (insn & 0xff000000) != 0x0d000000)
69fc87f1 3276 invalid_tls_insn (input_bfd, input_section, rel);
d0ddfe27
AK		 3277
3278 if ((insn & 0xff000000) == 0x0d000000)
3279 {
3280 /* LD->LE transition.
3281 basr rx, ry -> nopr r7 */
3282 insn = 0x07070000 | (insn & 0xffff);
3283 }
3284 else if ((insn & 0xff000000) == 0x4d000000)
77df2968
MS		 3285 {
3286 /* LD->LE transition.
3287 bas %r14,0(%rx,%r13) -> bc 0,0 */
3288 insn = 0x47000000;
3289 }
3290 else
3291 {
3292 /* LD->LE transition.
d0ddfe27 3293 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
77df2968
MS		 3294 insn = 0xc0040000;
3295 bfd_put_16 (output_bfd, 0x0000,
3296 contents + rel->r_offset + 4);
3297 }
69fc87f1
MS		 3298 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3299 }
3300 }
3301 continue;
3302
0451c93c
MS		 3303 default:
3304 break;
3305 }
ec338859 3306
239e1f3a
AM		 3307 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3308 because such sections are not SEC_ALLOC and thus ld.so will
3309 not process them. */
0451c93c 3310 if (unresolved_reloc
239e1f3a 3311 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3312 && h->def_dynamic)
3313 && _bfd_elf_section_offset (output_bfd, info, input_section,
3314 rel->r_offset) != (bfd_vma) -1)
0451c93c 3315 (*_bfd_error_handler)
843fe662 3316 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3317 input_bfd,
3318 input_section,
0451c93c 3319 (long) rel->r_offset,
843fe662 3320 howto->name,
0451c93c 3321 h->root.root.string);
ec338859 3322
470b557a
AK		 3323 do_relocation:
3324
fb798c50
AK		 3325 /* When applying a 24 bit reloc we need to start one byte
3326 earlier. Otherwise the 32 bit get/put bfd operations might
3327 access a byte after the actual section. */
3328 if (r_type == R_390_PC24DBL
3329 || r_type == R_390_PLT24DBL)
3330 rel->r_offset--;
3331
bd1ea41b
MS		 3332 if (r_type == R_390_20
3333 || r_type == R_390_GOT20
3334 || r_type == R_390_GOTPLT20
3335 || r_type == R_390_TLS_GOTIE20)
3336 {
3337 relocation += rel->r_addend;
3338 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3339 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3340 contents, rel->r_offset,
3341 relocation, 0);
3342 }
3343 else
3344 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3345 contents, rel->r_offset,
3346 relocation, rel->r_addend);
ec338859 3347
a85d7ed0
NC		 3348 if (r != bfd_reloc_ok)
3349 {
0451c93c 3350 const char *name;
ec338859 3351
0451c93c
MS		 3352 if (h != NULL)
3353 name = h->root.root.string;
3354 else
a85d7ed0 3355 {
0451c93c
MS		 3356 name = bfd_elf_string_from_elf_section (input_bfd,
3357 symtab_hdr->sh_link,
3358 sym->st_name);
3359 if (name == NULL)
b34976b6 3360 return FALSE;
0451c93c
MS		 3361 if (*name == '\0')
3362 name = bfd_section_name (input_bfd, sec);
3363 }
ec338859 3364
0451c93c
MS		 3365 if (r == bfd_reloc_overflow)
3366 {
ec338859 3367
0451c93c 3368 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 3369 (info, (h ? &h->root : NULL), name, howto->name,
3370 (bfd_vma) 0, input_bfd, input_section,
3371 rel->r_offset)))
b34976b6 3372 return FALSE;
0451c93c
MS		 3373 }
3374 else
3375 {
3376 (*_bfd_error_handler)
d003868e
AM		 3377 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3378 input_bfd, input_section,
0451c93c 3379 (long) rel->r_offset, name, (int) r);
b34976b6 3380 return FALSE;
a85d7ed0
NC		 3381 }
3382 }
3383 }
ec338859 3384
b34976b6 3385 return TRUE;
a85d7ed0
NC		 3386}
3387
470b557a
AK		 3388/* Generate the PLT slots together with the dynamic relocations needed
3389 for IFUNC symbols. */
3390
3391static void
3392elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3393 struct bfd_link_info *info,
3394 struct elf_link_hash_entry *h,
3395 struct elf_s390_link_hash_table *htab,
3396 bfd_vma iplt_offset,
3397 bfd_vma resolver_address)
3398{
3399 bfd_vma iplt_index;
3400 bfd_vma got_offset;
3401 bfd_vma igotiplt_offset;
3402 Elf_Internal_Rela rela;
3403 bfd_byte *loc;
3404 asection *plt, *gotplt, *relplt;
3405 bfd_vma relative_offset;
3406
3407 if (htab->elf.iplt == NULL
3408 || htab->elf.igotplt == NULL
3409 || htab->elf.irelplt == NULL)
3410 abort ();
3411
3412 gotplt = htab->elf.igotplt;
3413 relplt = htab->elf.irelplt;
3414
3415 /* Index of the PLT slot within iplt section. */
3416 iplt_index = iplt_offset / PLT_ENTRY_SIZE;
3417 plt = htab->elf.iplt;
3418 /* Offset into the igot.plt section. */
3419 igotiplt_offset = iplt_index * GOT_ENTRY_SIZE;
3420 /* Offset into the got section. */
3421 got_offset = igotiplt_offset + gotplt->output_offset;
3422
3423 /* S390 uses halfwords for relative branch calc! */
3424 relative_offset = - (plt->output_offset +
3425 (PLT_ENTRY_SIZE * iplt_index) + 18) / 2;
3426/* If offset is > 32768, branch to a previous branch
3427 390 can only handle +-64 K jumps. */
3428 if ( -32768 > (int) relative_offset )
3429 relative_offset
3430 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3431
3432 /* Fill in the entry in the procedure linkage table. */
0e1862bb 3433 if (!bfd_link_pic (info))
470b557a
AK		 3434 {
3435 memcpy (plt->contents + iplt_offset, elf_s390_plt_entry,
3436 PLT_ENTRY_SIZE);
3437
3438 /* Adjust jump to the first plt entry. */
3439 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3440 plt->contents + iplt_offset + 20);
3441
3442 /* Push the GOT offset field. */
3443 bfd_put_32 (output_bfd,
3444 (gotplt->output_section->vma
3445 + got_offset),
3446 plt->contents + iplt_offset + 24);
3447 }
3448 else if (got_offset < 4096)
3449 {
3450 /* The GOT offset is small enough to be used directly as
3451 displacement. */
3452 memcpy (plt->contents + iplt_offset,
3453 elf_s390_plt_pic12_entry,
3454 PLT_ENTRY_SIZE);
3455
3456 /* Put in the GOT offset as displacement value. The 0xc000
3457 value comes from the first word of the plt entry. Look
3458 at the elf_s390_plt_pic16_entry content. */
3459 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3460 plt->contents + iplt_offset + 2);
3461
3462 /* Adjust the jump to the first plt entry. */
3463 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3464 plt->contents + iplt_offset + 20);
3465 }
3466 else if (got_offset < 32768)
3467 {
3468 /* The GOT offset is too big for a displacement but small
3469 enough to be a signed 16 bit immediate value as it can be
3470 used in an lhi instruction. */
3471 memcpy (plt->contents + iplt_offset,
3472 elf_s390_plt_pic16_entry,
3473 PLT_ENTRY_SIZE);
3474
3475 /* Put in the GOT offset for the lhi instruction. */
3476 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3477 plt->contents + iplt_offset + 2);
3478
3479 /* Adjust the jump to the first plt entry. */
3480 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3481 plt->contents + iplt_offset + 20);
3482 }
3483 else
3484 {
3485 memcpy (plt->contents + iplt_offset,
3486 elf_s390_plt_pic_entry,
3487 PLT_ENTRY_SIZE);
3488
3489 /* Adjust the jump to the first plt entry. */
3490 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3491 plt->contents + iplt_offset + 20);
3492
3493 /* Push the GOT offset field. */
3494 bfd_put_32 (output_bfd, got_offset,
3495 plt->contents + iplt_offset + 24);
3496 }
3497 /* Insert offset into reloc. table here. */
3498 bfd_put_32 (output_bfd, relplt->output_offset +
3499 iplt_index * RELA_ENTRY_SIZE,
3500 plt->contents + iplt_offset + 28);
3501
3502 /* Fill in the entry in the global offset table.
3503 Points to instruction after GOT offset. */
3504 bfd_put_32 (output_bfd,
3505 (plt->output_section->vma
3506 + plt->output_offset
3507 + iplt_offset
3508 + 12),
3509 gotplt->contents + igotiplt_offset);
3510
3511 /* Fill in the entry in the .rela.plt section. */
3512 rela.r_offset = gotplt->output_section->vma + got_offset;
3513
3514 if (!h
3515 || h->dynindx == -1
0e1862bb 3516 || ((bfd_link_executable (info)
470b557a
AK		 3517 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3518 && h->def_regular))
3519 {
3520 /* The symbol can be locally resolved. */
3521 rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
3522 rela.r_addend = resolver_address;
3523 }
3524 else
3525 {
3526 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3527 rela.r_addend = 0;
3528 }
3529
3530 loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE;
3531 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3532}
3533
a85d7ed0
NC		 3534/* Finish up dynamic symbol handling. We set the contents of various
3535 dynamic sections here. */
3536
b34976b6 3537static bfd_boolean
2c3fc389
NC		 3538elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3539 struct bfd_link_info *info,
3540 struct elf_link_hash_entry *h,
3541 Elf_Internal_Sym *sym)
a85d7ed0 3542{
0451c93c 3543 struct elf_s390_link_hash_table *htab;
470b557a 3544 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
ec338859 3545
0451c93c 3546 htab = elf_s390_hash_table (info);
ec338859 3547
a85d7ed0
NC		 3548 if (h->plt.offset != (bfd_vma) -1)
3549 {
0451c93c
MS		 3550 bfd_vma plt_index;
3551 bfd_vma got_offset;
a85d7ed0 3552 Elf_Internal_Rela rela;
947216bf 3553 bfd_byte *loc;
a85d7ed0 3554 bfd_vma relative_offset;
ec338859 3555
a85d7ed0 3556 /* This symbol has an entry in the procedure linkage table. Set
26e41594 3557 it up. */
470b557a 3558 if (s390_is_ifunc_symbol_p (h))
0451c93c 3559 {
470b557a
AK		 3560 /* If we can resolve the IFUNC symbol locally we generate an
3561 IRELATIVE reloc. */
3562 elf_s390_finish_ifunc_symbol (output_bfd, info, h, htab, h->plt.offset,
3563 eh->ifunc_resolver_address +
3564 eh->ifunc_resolver_section->output_offset +
3565 eh->ifunc_resolver_section->output_section->vma);
3566 /* Fallthrough. Handling of explicit GOT slots of IFUNC
3567 symbols is below. */
0451c93c 3568 }
a85d7ed0 3569 else
0451c93c 3570 {
470b557a
AK		 3571 if (h->dynindx == -1
3572 || htab->elf.splt == NULL
3573 || htab->elf.sgotplt == NULL
3574 || htab->elf.srelplt == NULL)
3575 abort ();
9aa17453 3576
470b557a
AK		 3577 /* Calc. index no.
3578 Current offset - size first entry / entry size. */
3579 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9aa17453 3580
470b557a
AK		 3581 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3582 addr & GOT addr. */
3583 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
a85d7ed0 3584
470b557a
AK		 3585 /* S390 uses halfwords for relative branch calc! */
3586 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3587 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3588 /* If offset is > 32768, branch to a previous branch
3589 390 can only handle +-64 K jumps. */
3590 if ( -32768 > (int) relative_offset )
3591 relative_offset
3592 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
ec338859 3593
470b557a 3594 /* Fill in the entry in the procedure linkage table. */
0e1862bb 3595 if (!bfd_link_pic (info))
470b557a
AK		 3596 {
3597 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry,
3598 PLT_ENTRY_SIZE);
3599
3600 /* Adjust jump to the first plt entry. */
3601 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3602 htab->elf.splt->contents + h->plt.offset + 20);
3603
3604 /* Push the GOT offset field. */
3605 bfd_put_32 (output_bfd,
3606 (htab->elf.sgotplt->output_section->vma
3607 + htab->elf.sgotplt->output_offset
3608 + got_offset),
3609 htab->elf.splt->contents + h->plt.offset + 24);
3610 }
3611 else if (got_offset < 4096)
3612 {
3613 /* The GOT offset is small enough to be used directly as
3614 displacement. */
3615 memcpy (htab->elf.splt->contents + h->plt.offset,
3616 elf_s390_plt_pic12_entry,
3617 PLT_ENTRY_SIZE);
3618
3619 /* Put in the GOT offset as displacement value. The 0xc000
3620 value comes from the first word of the plt entry. Look
3621 at the elf_s390_plt_pic16_entry content. */
3622 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3623 htab->elf.splt->contents + h->plt.offset + 2);
3624
3625 /* Adjust the jump to the first plt entry. */
3626 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3627 htab->elf.splt->contents + h->plt.offset + 20);
3628 }
3629 else if (got_offset < 32768)
3630 {
3631 /* The GOT offset is too big for a displacement but small
3632 enough to be a signed 16 bit immediate value as it can be
3633 used in an lhi instruction. */
3634 memcpy (htab->elf.splt->contents + h->plt.offset,
3635 elf_s390_plt_pic16_entry,
3636 PLT_ENTRY_SIZE);
3637
3638 /* Put in the GOT offset for the lhi instruction. */
3639 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3640 htab->elf.splt->contents + h->plt.offset + 2);
3641
3642 /* Adjust the jump to the first plt entry. */
3643 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3644 htab->elf.splt->contents + h->plt.offset + 20);
3645 }
3646 else
3647 {
3648 memcpy (htab->elf.splt->contents + h->plt.offset,
3649 elf_s390_plt_pic_entry,
3650 PLT_ENTRY_SIZE);
3651
3652 /* Adjust the jump to the first plt entry. */
3653 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3654 htab->elf.splt->contents + h->plt.offset + 20);
3655
3656 /* Push the GOT offset field. */
3657 bfd_put_32 (output_bfd, got_offset,
3658 htab->elf.splt->contents + h->plt.offset + 24);
3659 }
3660 /* Insert offset into reloc. table here. */
3661 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3662 htab->elf.splt->contents + h->plt.offset + 28);
3663
3664 /* Fill in the entry in the global offset table.
3665 Points to instruction after GOT offset. */
3666 bfd_put_32 (output_bfd,
3667 (htab->elf.splt->output_section->vma
3668 + htab->elf.splt->output_offset
3669 + h->plt.offset
3670 + 12),
3671 htab->elf.sgotplt->contents + got_offset);
3672
3673 /* Fill in the entry in the .rela.plt section. */
3674 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3675 + htab->elf.sgotplt->output_offset
3676 + got_offset);
3677 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3678 rela.r_addend = 0;
3679 loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3680 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3681
3682 if (!h->def_regular)
3683 {
3684 /* Mark the symbol as undefined, rather than as defined in
3685 the .plt section. Leave the value alone. This is a clue
3686 for the dynamic linker, to make function pointer
3687 comparisons work between an application and shared
3688 library. */
3689 sym->st_shndx = SHN_UNDEF;
3690 }
a85d7ed0
NC		 3691 }
3692 }
ec338859 3693
69fc87f1
MS		 3694 if (h->got.offset != (bfd_vma) -1
3695 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3696 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3697 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3698 {
a85d7ed0 3699 Elf_Internal_Rela rela;
947216bf 3700 bfd_byte *loc;
a85d7ed0
NC		 3701
3702 /* This symbol has an entry in the global offset table. Set it
26e41594 3703 up. */
a85d7ed0 3704
f41345a7 3705 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
0451c93c 3706 abort ();
a85d7ed0 3707
f41345a7
AK		 3708 rela.r_offset = (htab->elf.sgot->output_section->vma
3709 + htab->elf.sgot->output_offset
dc810e39 3710 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0
NC		 3711
3712 /* If this is a static link, or it is a -Bsymbolic link and the
3713 symbol is defined locally or was forced to be local because
3714 of a version file, we just want to emit a RELATIVE reloc.
3715 The entry in the global offset table will already have been
3716 initialized in the relocate_section function. */
470b557a
AK		 3717 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3718 {
0e1862bb 3719 if (bfd_link_pic (info))
470b557a
AK		 3720 {
3721 /* An explicit GOT slot usage needs GLOB_DAT. If the
3722 symbol references local the implicit got.iplt slot
3723 will be used and the IRELATIVE reloc has been created
3724 above. */
3725 goto do_glob_dat;
3726 }
3727 else
3728 {
3729 /* For non-shared objects explicit GOT slots must be
3730 filled with the PLT slot address for pointer
3731 equality reasons. */
3732 bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma
3733 + htab->elf.iplt->output_offset
3734 + h->plt.offset),
3735 htab->elf.sgot->contents + h->got.offset);
3736 return TRUE;
3737 }
3738 }
0e1862bb 3739 else if (bfd_link_pic (info)
8c21ca21 3740 && SYMBOL_REFERENCES_LOCAL (info, h))
0451c93c 3741 {
470b557a
AK		 3742 /* If this is a static link, or it is a -Bsymbolic link and
3743 the symbol is defined locally or was forced to be local
3744 because of a version file, we just want to emit a
3745 RELATIVE reloc. The entry in the global offset table
3746 will already have been initialized in the
3747 relocate_section function. */
8c21ca21
AK		 3748 if (!h->def_regular)
3749 return FALSE;
0451c93c
MS		 3750 BFD_ASSERT((h->got.offset & 1) != 0);
3751 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3752 rela.r_addend = (h->root.u.def.value
26e41594
AM		 3753 + h->root.u.def.section->output_section->vma
3754 + h->root.u.def.section->output_offset);
3755 }
a85d7ed0
NC		 3756 else
3757 {
3758 BFD_ASSERT((h->got.offset & 1) == 0);
470b557a 3759 do_glob_dat:
f41345a7 3760 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
a85d7ed0 3761 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
26e41594
AM		 3762 rela.r_addend = 0;
3763 }
a85d7ed0 3764
f41345a7
AK		 3765 loc = htab->elf.srelgot->contents;
3766 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3767 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3768 }
3769
f5385ebf 3770 if (h->needs_copy)
a85d7ed0 3771 {
a85d7ed0 3772 Elf_Internal_Rela rela;
947216bf 3773 bfd_byte *loc;
a85d7ed0
NC		 3774
3775 /* This symbols needs a copy reloc. Set it up. */
3776
0451c93c
MS		 3777 if (h->dynindx == -1
3778 || (h->root.type != bfd_link_hash_defined
3779 && h->root.type != bfd_link_hash_defweak)
3780 || htab->srelbss == NULL)
3781 abort ();
a85d7ed0
NC		 3782
3783 rela.r_offset = (h->root.u.def.value
3784 + h->root.u.def.section->output_section->vma
3785 + h->root.u.def.section->output_offset);
3786 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3787 rela.r_addend = 0;
947216bf
AM		 3788 loc = htab->srelbss->contents;
3789 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela);
0451c93c 3790 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3791 }
3792
3793 /* Mark some specially defined symbols as absolute. */
9637f6ef 3794 if (h == htab->elf.hdynamic
22edb2f1
RS		 3795 || h == htab->elf.hgot
3796 || h == htab->elf.hplt)
a85d7ed0
NC		 3797 sym->st_shndx = SHN_ABS;
3798
b34976b6 3799 return TRUE;
a85d7ed0
NC		 3800}
3801
0451c93c
MS		 3802/* Used to decide how to sort relocs in an optimal manner for the
3803 dynamic linker, before writing them out. */
3804
3805static enum elf_reloc_type_class
7e612e98
AM		 3806elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3807 const asection *rel_sec ATTRIBUTE_UNUSED,
3808 const Elf_Internal_Rela *rela)
0451c93c
MS		 3809{
3810 switch ((int) ELF32_R_TYPE (rela->r_info))
3811 {
3812 case R_390_RELATIVE:
3813 return reloc_class_relative;
3814 case R_390_JMP_SLOT:
3815 return reloc_class_plt;
3816 case R_390_COPY:
3817 return reloc_class_copy;
3818 default:
3819 return reloc_class_normal;
3820 }
3821}
3822
a85d7ed0
NC		 3823/* Finish up the dynamic sections. */
3824
b34976b6 3825static bfd_boolean
2c3fc389
NC		 3826elf_s390_finish_dynamic_sections (bfd *output_bfd,
3827 struct bfd_link_info *info)
a85d7ed0 3828{
0451c93c 3829 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3830 bfd *dynobj;
3831 asection *sdyn;
470b557a
AK		 3832 bfd *ibfd;
3833 unsigned int i;
a85d7ed0 3834
0451c93c
MS		 3835 htab = elf_s390_hash_table (info);
3836 dynobj = htab->elf.dynobj;
3d4d4302 3837 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
a85d7ed0 3838
0451c93c 3839 if (htab->elf.dynamic_sections_created)
a85d7ed0 3840 {
a85d7ed0
NC		 3841 Elf32_External_Dyn *dyncon, *dynconend;
3842
f41345a7 3843 if (sdyn == NULL || htab->elf.sgot == NULL)
0451c93c 3844 abort ();
a85d7ed0
NC		 3845
3846 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 3847 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3848 for (; dyncon < dynconend; dyncon++)
3849 {
3850 Elf_Internal_Dyn dyn;
a85d7ed0 3851 asection *s;
ec338859 3852
a85d7ed0 3853 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3854
a85d7ed0
NC		 3855 switch (dyn.d_tag)
3856 {
3857 default:
0451c93c 3858 continue;
ec338859 3859
a85d7ed0 3860 case DT_PLTGOT:
f41345a7 3861 dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma;
0451c93c 3862 break;
ec338859 3863
a85d7ed0 3864 case DT_JMPREL:
f41345a7 3865 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
a85d7ed0
NC		 3866 break;
3867
3868 case DT_PLTRELSZ:
f41345a7 3869 s = htab->elf.srelplt->output_section;
eea6121a 3870 dyn.d_un.d_val = s->size;
a85d7ed0
NC		 3871 break;
3872 }
0451c93c
MS		 3873
3874 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3875 }
3876
3877 /* Fill in the special first entry in the procedure linkage table. */
f41345a7 3878 if (htab->elf.splt && htab->elf.splt->size > 0)
a85d7ed0 3879 {
f41345a7 3880 memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
0e1862bb 3881 if (bfd_link_pic (info))
0451c93c 3882 {
f41345a7 3883 memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry,
9aa17453
AK		 3884 PLT_FIRST_ENTRY_SIZE);
3885 }
26e41594 3886 else
9aa17453 3887 {
f41345a7 3888 memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry,
9aa17453 3889 PLT_FIRST_ENTRY_SIZE);
26e41594 3890 bfd_put_32 (output_bfd,
f41345a7
AK		 3891 htab->elf.sgotplt->output_section->vma
3892 + htab->elf.sgotplt->output_offset,
3893 htab->elf.splt->contents + 24);
26e41594 3894 }
f41345a7 3895 elf_section_data (htab->elf.splt->output_section)
0451c93c 3896 ->this_hdr.sh_entsize = 4;
a85d7ed0
NC		 3897 }
3898
3899 }
3900
f41345a7 3901 if (htab->elf.sgotplt)
a85d7ed0 3902 {
0451c93c 3903 /* Fill in the first three entries in the global offset table. */
f41345a7 3904 if (htab->elf.sgotplt->size > 0)
0451c93c
MS		 3905 {
3906 bfd_put_32 (output_bfd,
3907 (sdyn == NULL ? (bfd_vma) 0
3908 : sdyn->output_section->vma + sdyn->output_offset),
f41345a7 3909 htab->elf.sgotplt->contents);
0451c93c 3910 /* One entry for shared object struct ptr. */
f41345a7 3911 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4);
0451c93c 3912 /* One entry for _dl_runtime_resolve. */
f41345a7 3913 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
0451c93c 3914 }
a85d7ed0 3915
f41345a7 3916 elf_section_data (htab->elf.sgotplt->output_section)
0451c93c
MS		 3917 ->this_hdr.sh_entsize = 4;
3918 }
470b557a 3919 /* Finish dynamic symbol for local IFUNC symbols. */
c72f2fb2 3920 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
470b557a
AK		 3921 {
3922 struct plt_entry *local_plt;
3923 Elf_Internal_Sym *isym;
3924 Elf_Internal_Shdr *symtab_hdr;
3925
3926 symtab_hdr = &elf_symtab_hdr (ibfd);
3927
3928 local_plt = elf_s390_local_plt (ibfd);
3929 if (local_plt != NULL)
3930 for (i = 0; i < symtab_hdr->sh_info; i++)
3931 {
3932 if (local_plt[i].plt.offset != (bfd_vma) -1)
3933 {
3934 asection *sec = local_plt[i].sec;
3935 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3936 if (isym == NULL)
3937 return FALSE;
3938
3939 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3940 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3941 local_plt[i].plt.offset,
3942 isym->st_value
3943 + sec->output_section->vma
3944 + sec->output_offset);
3945
3946 }
3947 }
3948 }
b34976b6 3949 return TRUE;
a85d7ed0
NC		 3950}
3951
b34976b6 3952static bfd_boolean
2c3fc389 3953elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note)
979f4a38
NC		 3954{
3955 int offset;
eea6121a 3956 unsigned int size;
979f4a38
NC		 3957
3958 switch (note->descsz)
3959 {
3960 default:
b34976b6 3961 return FALSE;
979f4a38
NC		 3962
3963 case 224: /* S/390 Linux. */
3964 /* pr_cursig */
228e534f 3965 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
979f4a38
NC		 3966
3967 /* pr_pid */
228e534f 3968 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
979f4a38
NC		 3969
3970 /* pr_reg */
3971 offset = 72;
eea6121a 3972 size = 144;
979f4a38
NC		 3973 break;
3974 }
3975
3976 /* Make a ".reg/999" section. */
3977 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 3978 size, note->descpos + offset);
979f4a38
NC		 3979}
3980
4c45e5c9
JJ		 3981/* Return address for Ith PLT stub in section PLT, for relocation REL
3982 or (bfd_vma) -1 if it should not be included. */
3983
3984static bfd_vma
3985elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3986 const arelent *rel ATTRIBUTE_UNUSED)
3987{
3988 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3989}
3990
643f7afb
AK		 3991/* Merge backend specific data from an object file to the output
3992 object file when linking. */
3993
55786da2
AK		 3994static bfd_boolean
3995elf32_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3996{
643f7afb
AK		 3997 if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
3998 return TRUE;
3999
4000 if (!elf_s390_merge_obj_attributes (ibfd, obfd))
4001 return FALSE;
4002
55786da2
AK		 4003 elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
4004 return TRUE;
4005}
4006
4c45e5c9 4007
6d00b590 4008#define TARGET_BIG_SYM s390_elf32_vec
a85d7ed0
NC		 4009#define TARGET_BIG_NAME "elf32-s390"
4010#define ELF_ARCH bfd_arch_s390
ae95ffa6 4011#define ELF_TARGET_ID S390_ELF_DATA
a85d7ed0
NC		 4012#define ELF_MACHINE_CODE EM_S390
4013#define ELF_MACHINE_ALT1 EM_S390_OLD
4014#define ELF_MAXPAGESIZE 0x1000
4015
4016#define elf_backend_can_gc_sections 1
51b64d56 4017#define elf_backend_can_refcount 1
a85d7ed0
NC		 4018#define elf_backend_want_got_plt 1
4019#define elf_backend_plt_readonly 1
4020#define elf_backend_want_plt_sym 0
4021#define elf_backend_got_header_size 12
b491616a 4022#define elf_backend_rela_normal 1
a85d7ed0 4023
26e41594 4024#define elf_info_to_howto elf_s390_info_to_howto
a85d7ed0 4025
a85d7ed0
NC		 4026#define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
4027#define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
4028#define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
157090f7 4029#define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
a85d7ed0 4030
55786da2
AK		 4031#define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
4032
a85d7ed0 4033#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
26e41594 4034#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c
MS		 4035#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
4036#define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
a85d7ed0
NC		 4037#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4038#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
26e41594
AM		 4039#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
4040#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
0451c93c 4041#define elf_backend_reloc_type_class elf_s390_reloc_type_class
26e41594 4042#define elf_backend_relocate_section elf_s390_relocate_section
a85d7ed0 4043#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 4044#define elf_backend_init_index_section _bfd_elf_init_1_index_section
979f4a38 4045#define elf_backend_grok_prstatus elf_s390_grok_prstatus
4c45e5c9 4046#define elf_backend_plt_sym_val elf_s390_plt_sym_val
470b557a 4047#define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
b9005ba7 4048#define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
a85d7ed0 4049
69fc87f1 4050#define bfd_elf32_mkobject elf_s390_mkobject
26e41594 4051#define elf_backend_object_p elf_s390_object_p
a85d7ed0
NC		 4052
4053#include "elf32-target.h"
GDB Binutils - Deliverables
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