projects / deliverable / binutils-gdb.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Delete duplicate target short-cuts to dynamic sections
[deliverable/binutils-gdb.git] / bfd / elf32-s390.c
1 /* IBM S/390-specific support for 32-bit ELF
2 Copyright (C) 2000-2016 Free Software Foundation, Inc.
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
9 the Free Software Foundation; either version 3 of the License, or
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
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
20 02110-1301, USA. */
21
22 #include "sysdep.h"
23 #include "bfd.h"
24 #include "bfdlink.h"
25 #include "libbfd.h"
26 #include "elf-bfd.h"
27 #include "elf/s390.h"
28 #include <stdarg.h>
29
30 static bfd_reloc_status_type
31 s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
32 asection *, bfd *, char **);
33 static bfd_reloc_status_type
34 s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
35 asection *, bfd *, char **);
36
37 /* The relocation "howto" table. */
38
39 static reloc_howto_type elf_howto_table[] =
40 {
41 HOWTO (R_390_NONE, /* type */
42 0, /* rightshift */
43 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
44 0, /* bitsize */
45 FALSE, /* pc_relative */
46 0, /* bitpos */
47 complain_overflow_dont, /* complain_on_overflow */
48 bfd_elf_generic_reloc, /* special_function */
49 "R_390_NONE", /* name */
50 FALSE, /* partial_inplace */
51 0, /* src_mask */
52 0, /* dst_mask */
53 FALSE), /* pcrel_offset */
54
55 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
56 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
57 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
58 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
59 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
60 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
61 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
62 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
63 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
64 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
65 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
66 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
67 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
68 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
69 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
70 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
71 HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
72 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
73 HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
74 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
75 HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
76 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
77 HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
78 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
79 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
80 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
81 HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
82 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
83 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
84 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
85 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
86 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
87 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
88 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
89 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
90 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
91 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
92 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
93 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
94 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
95 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
96 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
97 EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
98 EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
99 EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
100 EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
101 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
102 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
103 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
104 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
105 EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
106 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
107 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
108 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
109 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
110 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
111 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
112 EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
113 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
114 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE),
115 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
116 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
117 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
118 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
119 EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
120 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
121 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
122 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
123 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
124 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
125 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
126 HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE),
128 EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */
129 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
130 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
131 HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
132 bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE),
133 EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */
134 HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
135 bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE),
136 EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */
137 HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE),
139 EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */
140 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
141 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE),
142 HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
143 bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE),
144 EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */
145 HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE),
147 EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */
148 HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE),
150 HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE),
152 HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
153 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE),
154 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
155 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
156 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
157 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
158 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
159 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
160 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
161 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
162 HOWTO(R_390_IRELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, 0xffffffff, FALSE),
164 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
165 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
166 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
167 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
168 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
169 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
170 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
171 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
172 };
173
174 /* GNU extension to record C++ vtable hierarchy. */
175 static reloc_howto_type elf32_s390_vtinherit_howto =
176 HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
177 static reloc_howto_type elf32_s390_vtentry_howto =
178 HOWTO (R_390_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
179
180 static reloc_howto_type *
181 elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
182 bfd_reloc_code_real_type code)
183 {
184 switch (code)
185 {
186 case BFD_RELOC_NONE:
187 return &elf_howto_table[(int) R_390_NONE];
188 case BFD_RELOC_8:
189 return &elf_howto_table[(int) R_390_8];
190 case BFD_RELOC_390_12:
191 return &elf_howto_table[(int) R_390_12];
192 case BFD_RELOC_16:
193 return &elf_howto_table[(int) R_390_16];
194 case BFD_RELOC_32:
195 return &elf_howto_table[(int) R_390_32];
196 case BFD_RELOC_CTOR:
197 return &elf_howto_table[(int) R_390_32];
198 case BFD_RELOC_32_PCREL:
199 return &elf_howto_table[(int) R_390_PC32];
200 case BFD_RELOC_390_GOT12:
201 return &elf_howto_table[(int) R_390_GOT12];
202 case BFD_RELOC_32_GOT_PCREL:
203 return &elf_howto_table[(int) R_390_GOT32];
204 case BFD_RELOC_390_PLT32:
205 return &elf_howto_table[(int) R_390_PLT32];
206 case BFD_RELOC_390_COPY:
207 return &elf_howto_table[(int) R_390_COPY];
208 case BFD_RELOC_390_GLOB_DAT:
209 return &elf_howto_table[(int) R_390_GLOB_DAT];
210 case BFD_RELOC_390_JMP_SLOT:
211 return &elf_howto_table[(int) R_390_JMP_SLOT];
212 case BFD_RELOC_390_RELATIVE:
213 return &elf_howto_table[(int) R_390_RELATIVE];
214 case BFD_RELOC_32_GOTOFF:
215 return &elf_howto_table[(int) R_390_GOTOFF32];
216 case BFD_RELOC_390_GOTPC:
217 return &elf_howto_table[(int) R_390_GOTPC];
218 case BFD_RELOC_390_GOT16:
219 return &elf_howto_table[(int) R_390_GOT16];
220 case BFD_RELOC_16_PCREL:
221 return &elf_howto_table[(int) R_390_PC16];
222 case BFD_RELOC_390_PC12DBL:
223 return &elf_howto_table[(int) R_390_PC12DBL];
224 case BFD_RELOC_390_PLT12DBL:
225 return &elf_howto_table[(int) R_390_PLT12DBL];
226 case BFD_RELOC_390_PC16DBL:
227 return &elf_howto_table[(int) R_390_PC16DBL];
228 case BFD_RELOC_390_PLT16DBL:
229 return &elf_howto_table[(int) R_390_PLT16DBL];
230 case BFD_RELOC_390_PC24DBL:
231 return &elf_howto_table[(int) R_390_PC24DBL];
232 case BFD_RELOC_390_PLT24DBL:
233 return &elf_howto_table[(int) R_390_PLT24DBL];
234 case BFD_RELOC_390_PC32DBL:
235 return &elf_howto_table[(int) R_390_PC32DBL];
236 case BFD_RELOC_390_PLT32DBL:
237 return &elf_howto_table[(int) R_390_PLT32DBL];
238 case BFD_RELOC_390_GOTPCDBL:
239 return &elf_howto_table[(int) R_390_GOTPCDBL];
240 case BFD_RELOC_390_GOTENT:
241 return &elf_howto_table[(int) R_390_GOTENT];
242 case BFD_RELOC_16_GOTOFF:
243 return &elf_howto_table[(int) R_390_GOTOFF16];
244 case BFD_RELOC_390_GOTPLT12:
245 return &elf_howto_table[(int) R_390_GOTPLT12];
246 case BFD_RELOC_390_GOTPLT16:
247 return &elf_howto_table[(int) R_390_GOTPLT16];
248 case BFD_RELOC_390_GOTPLT32:
249 return &elf_howto_table[(int) R_390_GOTPLT32];
250 case BFD_RELOC_390_GOTPLTENT:
251 return &elf_howto_table[(int) R_390_GOTPLTENT];
252 case BFD_RELOC_390_PLTOFF16:
253 return &elf_howto_table[(int) R_390_PLTOFF16];
254 case BFD_RELOC_390_PLTOFF32:
255 return &elf_howto_table[(int) R_390_PLTOFF32];
256 case BFD_RELOC_390_TLS_LOAD:
257 return &elf_howto_table[(int) R_390_TLS_LOAD];
258 case BFD_RELOC_390_TLS_GDCALL:
259 return &elf_howto_table[(int) R_390_TLS_GDCALL];
260 case BFD_RELOC_390_TLS_LDCALL:
261 return &elf_howto_table[(int) R_390_TLS_LDCALL];
262 case BFD_RELOC_390_TLS_GD32:
263 return &elf_howto_table[(int) R_390_TLS_GD32];
264 case BFD_RELOC_390_TLS_GOTIE12:
265 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
266 case BFD_RELOC_390_TLS_GOTIE32:
267 return &elf_howto_table[(int) R_390_TLS_GOTIE32];
268 case BFD_RELOC_390_TLS_LDM32:
269 return &elf_howto_table[(int) R_390_TLS_LDM32];
270 case BFD_RELOC_390_TLS_IE32:
271 return &elf_howto_table[(int) R_390_TLS_IE32];
272 case BFD_RELOC_390_TLS_IEENT:
273 return &elf_howto_table[(int) R_390_TLS_IEENT];
274 case BFD_RELOC_390_TLS_LE32:
275 return &elf_howto_table[(int) R_390_TLS_LE32];
276 case BFD_RELOC_390_TLS_LDO32:
277 return &elf_howto_table[(int) R_390_TLS_LDO32];
278 case BFD_RELOC_390_TLS_DTPMOD:
279 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
280 case BFD_RELOC_390_TLS_DTPOFF:
281 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
282 case BFD_RELOC_390_TLS_TPOFF:
283 return &elf_howto_table[(int) R_390_TLS_TPOFF];
284 case BFD_RELOC_390_20:
285 return &elf_howto_table[(int) R_390_20];
286 case BFD_RELOC_390_GOT20:
287 return &elf_howto_table[(int) R_390_GOT20];
288 case BFD_RELOC_390_GOTPLT20:
289 return &elf_howto_table[(int) R_390_GOTPLT20];
290 case BFD_RELOC_390_TLS_GOTIE20:
291 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
292 case BFD_RELOC_390_IRELATIVE:
293 return &elf_howto_table[(int) R_390_IRELATIVE];
294 case BFD_RELOC_VTABLE_INHERIT:
295 return &elf32_s390_vtinherit_howto;
296 case BFD_RELOC_VTABLE_ENTRY:
297 return &elf32_s390_vtentry_howto;
298 default:
299 break;
300 }
301 return 0;
302 }
303
304 static reloc_howto_type *
305 elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
306 const char *r_name)
307 {
308 unsigned int i;
309
310 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
311 if (elf_howto_table[i].name != NULL
312 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
313 return &elf_howto_table[i];
314
315 if (strcasecmp (elf32_s390_vtinherit_howto.name, r_name) == 0)
316 return &elf32_s390_vtinherit_howto;
317 if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0)
318 return &elf32_s390_vtentry_howto;
319
320 return NULL;
321 }
322
323 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
324 and elf32-s390.c has its own copy. */
325
326 static void
327 elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
328 arelent *cache_ptr,
329 Elf_Internal_Rela *dst)
330 {
331 unsigned int r_type = ELF32_R_TYPE(dst->r_info);
332 switch (r_type)
333 {
334 case R_390_GNU_VTINHERIT:
335 cache_ptr->howto = &elf32_s390_vtinherit_howto;
336 break;
337
338 case R_390_GNU_VTENTRY:
339 cache_ptr->howto = &elf32_s390_vtentry_howto;
340 break;
341
342 default:
343 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
344 {
345 /* xgettext:c-format */
346 _bfd_error_handler (_("%B: invalid relocation type %d"),
347 abfd, (int) r_type);
348 r_type = R_390_NONE;
349 }
350 cache_ptr->howto = &elf_howto_table[r_type];
351 }
352 }
353
354 /* A relocation function which doesn't do anything. */
355 static bfd_reloc_status_type
356 s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
357 arelent *reloc_entry,
358 asymbol *symbol ATTRIBUTE_UNUSED,
359 void * data ATTRIBUTE_UNUSED,
360 asection *input_section,
361 bfd *output_bfd,
362 char **error_message ATTRIBUTE_UNUSED)
363 {
364 if (output_bfd)
365 reloc_entry->address += input_section->output_offset;
366 return bfd_reloc_ok;
367 }
368
369 /* Handle the large displacement relocs. */
370 static bfd_reloc_status_type
371 s390_elf_ldisp_reloc (bfd *abfd ATTRIBUTE_UNUSED,
372 arelent *reloc_entry,
373 asymbol *symbol,
374 void * data ATTRIBUTE_UNUSED,
375 asection *input_section,
376 bfd *output_bfd,
377 char **error_message ATTRIBUTE_UNUSED)
378 {
379 reloc_howto_type *howto = reloc_entry->howto;
380 bfd_vma relocation;
381 bfd_vma insn;
382
383 if (output_bfd != (bfd *) NULL
384 && (symbol->flags & BSF_SECTION_SYM) == 0
385 && (! howto->partial_inplace
386 || reloc_entry->addend == 0))
387 {
388 reloc_entry->address += input_section->output_offset;
389 return bfd_reloc_ok;
390 }
391
392 if (output_bfd != NULL)
393 return bfd_reloc_continue;
394
395 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
396 return bfd_reloc_outofrange;
397
398 relocation = (symbol->value
399 + symbol->section->output_section->vma
400 + symbol->section->output_offset);
401 relocation += reloc_entry->addend;
402 if (howto->pc_relative)
403 {
404 relocation -= (input_section->output_section->vma
405 + input_section->output_offset);
406 relocation -= reloc_entry->address;
407 }
408
409 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
410 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
411 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
412
413 if ((bfd_signed_vma) relocation < - 0x80000
414 || (bfd_signed_vma) relocation > 0x7ffff)
415 return bfd_reloc_overflow;
416 else
417 return bfd_reloc_ok;
418 }
419
420 static bfd_boolean
421 elf_s390_is_local_label_name (bfd *abfd, const char *name)
422 {
423 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
424 return TRUE;
425
426 return _bfd_elf_is_local_label_name (abfd, name);
427 }
428
429 /* Functions for the 390 ELF linker. */
430
431 /* The name of the dynamic interpreter. This is put in the .interp
432 section. */
433
434 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
435
436 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
437 copying dynamic variables from a shared lib into an app's dynbss
438 section, and instead use a dynamic relocation to point into the
439 shared lib. */
440 #define ELIMINATE_COPY_RELOCS 1
441
442 /* The size in bytes of the first entry in the procedure linkage table. */
443 #define PLT_FIRST_ENTRY_SIZE 32
444 /* The size in bytes of an entry in the procedure linkage table. */
445 #define PLT_ENTRY_SIZE 32
446
447 #define GOT_ENTRY_SIZE 4
448
449 #define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela)
450
451 /* The first three entries in a procedure linkage table are reserved,
452 and the initial contents are unimportant (we zero them out).
453 Subsequent entries look like this. See the SVR4 ABI 386
454 supplement to see how this works. */
455
456 /* For the s390, simple addr offset can only be 0 - 4096.
457 To use the full 2 GB address space, several instructions
458 are needed to load an address in a register and execute
459 a branch( or just saving the address)
460
461 Furthermore, only r 0 and 1 are free to use!!! */
462
463 /* The first 3 words in the GOT are then reserved.
464 Word 0 is the address of the dynamic table.
465 Word 1 is a pointer to a structure describing the object
466 Word 2 is used to point to the loader entry address.
467
468 The code for position independent PLT entries looks like this:
469
470 r12 holds addr of the current GOT at entry to the PLT
471
472 The GOT holds the address in the PLT to be executed.
473 The loader then gets:
474 24(15) = Pointer to the structure describing the object.
475 28(15) = Offset into rela.plt
476
477 The loader must then find the module where the function is
478 and insert the address in the GOT.
479
480 Note: 390 can only address +- 64 K relative.
481 We check if offset > 65536, then make a relative branch -64xxx
482 back to a previous defined branch
483
484 PLT1: BASR 1,0 # 2 bytes
485 L 1,22(1) # 4 bytes Load offset in GOT in r 1
486 L 1,(1,12) # 4 bytes Load address from GOT in r1
487 BCR 15,1 # 2 bytes Jump to address
488 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
489 L 1,14(1) # 4 bytes Load offset in symol table in r1
490 BRC 15,-x # 4 bytes Jump to start of PLT
491 .word 0 # 2 bytes filler
492 .long ? # 4 bytes offset in GOT
493 .long ? # 4 bytes offset into rela.plt
494
495 This was the general case. There are two additional, optimizes PLT
496 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
497 First the one for GOT offsets < 4096:
498
499 PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
500 BCR 15,1 # 2 bytes Jump to address
501 .word 0,0,0 # 6 bytes filler
502 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
503 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
504 BRC 15,-x # 4 bytes Jump to start of PLT
505 .word 0,0,0 # 6 bytes filler
506 .long ? # 4 bytes offset into rela.plt
507
508 Second the one for GOT offsets < 32768:
509
510 PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
511 L 1,(1,12) # 4 bytes Load address from GOT to r1
512 BCR 15,1 # 2 bytes Jump to address
513 .word 0 # 2 bytes filler
514 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
515 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
516 BRC 15,-x # 4 bytes Jump to start of PLT
517 .word 0,0,0 # 6 bytes filler
518 .long ? # 4 bytes offset into rela.plt
519
520 Total = 32 bytes per PLT entry
521
522 The code for static build PLT entries looks like this:
523
524 PLT1: BASR 1,0 # 2 bytes
525 L 1,22(1) # 4 bytes Load address of GOT entry
526 L 1,0(0,1) # 4 bytes Load address from GOT in r1
527 BCR 15,1 # 2 bytes Jump to address
528 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
529 L 1,14(1) # 4 bytes Load offset in symbol table in r1
530 BRC 15,-x # 4 bytes Jump to start of PLT
531 .word 0 # 2 bytes filler
532 .long ? # 4 bytes address of GOT entry
533 .long ? # 4 bytes offset into rela.plt */
534
535 static const bfd_byte elf_s390_plt_entry[PLT_ENTRY_SIZE] =
536 {
537 0x0d, 0x10, /* basr %r1,%r0 */
538 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
539 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */
540 0x07, 0xf1, /* br %r1 */
541 0x0d, 0x10, /* basr %r1,%r0 */
542 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
543 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
544 0x00, 0x00, /* padding */
545 0x00, 0x00, 0x00, 0x00, /* GOT offset */
546 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
547 };
548
549 /* Generic PLT pic entry. */
550 static const bfd_byte elf_s390_plt_pic_entry[PLT_ENTRY_SIZE] =
551 {
552 0x0d, 0x10, /* basr %r1,%r0 */
553 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
554 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
555 0x07, 0xf1, /* br %r1 */
556 0x0d, 0x10, /* basr %r1,%r0 */
557 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
558 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
559 0x00, 0x00, /* padding */
560 0x00, 0x00, 0x00, 0x00, /* GOT offset */
561 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
562 };
563
564 /* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced
565 when generating the PLT slot with the GOT offset. */
566 static const bfd_byte elf_s390_plt_pic12_entry[PLT_ENTRY_SIZE] =
567 {
568 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */
569 0x07, 0xf1, /* br %r1 */
570 0x00, 0x00, 0x00, 0x00, /* padding */
571 0x00, 0x00,
572 0x0d, 0x10, /* basr %r1,%r0 */
573 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
574 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
575 0x00, 0x00, 0x00, 0x00,
576 0x00, 0x00, 0x00, 0x00
577 };
578
579 /* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced
580 when generating the PLT slot with the GOT offset. */
581 static const bfd_byte elf_s390_plt_pic16_entry[PLT_ENTRY_SIZE] =
582 {
583 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */
584 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
585 0x07, 0xf1, /* br %r1 */
586 0x00, 0x00,
587 0x0d, 0x10, /* basr %r1,%r0 */
588 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
589 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
590 0x00, 0x00, 0x00, 0x00,
591 0x00, 0x00, 0x00, 0x00,
592 0x00, 0x00
593 };
594
595 /* The first PLT entry pushes the offset into the rela.plt
596 from R1 onto the stack at 8(15) and the loader object info
597 at 12(15), loads the loader address in R1 and jumps to it. */
598
599 /* The first entry in the PLT for PIC code:
600
601 PLT0:
602 ST 1,28(15) # R1 has offset into rela.plt
603 L 1,4(12) # Get loader ino(object struct address)
604 ST 1,24(15) # Store address
605 L 1,8(12) # Entry address of loader in R1
606 BR 1 # Jump to loader
607
608 The first entry in the PLT for static code:
609
610 PLT0:
611 ST 1,28(15) # R1 has offset into rela.plt
612 BASR 1,0
613 L 1,18(0,1) # Get address of GOT
614 MVC 24(4,15),4(1) # Move loader ino to stack
615 L 1,8(1) # Get address of loader
616 BR 1 # Jump to loader
617 .word 0 # filler
618 .long got # address of GOT */
619
620 static const bfd_byte elf_s390_plt_first_entry[PLT_FIRST_ENTRY_SIZE] =
621 {
622 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
623 0x0d, 0x10, /* basr %r1,%r0 */
624 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */
625 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */
626 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */
627 0x07, 0xf1, /* br %r1 */
628 0x00, 0x00, 0x00, 0x00,
629 0x00, 0x00, 0x00, 0x00,
630 0x00, 0x00
631 };
632
633 static const bfd_byte elf_s390_plt_pic_first_entry[PLT_FIRST_ENTRY_SIZE] =
634 {
635 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
636 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */
637 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */
638 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */
639 0x07, 0xf1, /* br %r1 */
640 0x00, 0x00, 0x00, 0x00,
641 0x00, 0x00, 0x00, 0x00,
642 0x00, 0x00, 0x00, 0x00,
643 0x00, 0x00
644 };
645
646
647 /* s390 ELF linker hash entry. */
648
649 struct elf_s390_link_hash_entry
650 {
651 struct elf_link_hash_entry elf;
652
653 /* Track dynamic relocs copied for this symbol. */
654 struct elf_dyn_relocs *dyn_relocs;
655
656 /* Number of GOTPLT references for a function. */
657 bfd_signed_vma gotplt_refcount;
658
659 #define GOT_UNKNOWN 0
660 #define GOT_NORMAL 1
661 #define GOT_TLS_GD 2
662 #define GOT_TLS_IE 3
663 #define GOT_TLS_IE_NLT 4
664 unsigned char tls_type;
665
666 /* For pointer equality reasons we might need to change the symbol
667 type from STT_GNU_IFUNC to STT_FUNC together with its value and
668 section entry. So after alloc_dynrelocs only these values should
669 be used. In order to check whether a symbol is IFUNC use
670 s390_is_ifunc_symbol_p. */
671 bfd_vma ifunc_resolver_address;
672 asection *ifunc_resolver_section;
673 };
674
675 #define elf_s390_hash_entry(ent) \
676 ((struct elf_s390_link_hash_entry *)(ent))
677
678 /* This structure represents an entry in the local PLT list needed for
679 local IFUNC symbols. */
680 struct plt_entry
681 {
682 /* The section of the local symbol.
683 Set in relocate_section and used in finish_dynamic_sections. */
684 asection *sec;
685
686 union
687 {
688 bfd_signed_vma refcount;
689 bfd_vma offset;
690 } plt;
691 };
692
693 /* NOTE: Keep this structure in sync with
694 the one declared in elf64-s390.c. */
695 struct elf_s390_obj_tdata
696 {
697 struct elf_obj_tdata root;
698
699 /* A local PLT is needed for ifunc symbols. */
700 struct plt_entry *local_plt;
701
702 /* TLS type for each local got entry. */
703 char *local_got_tls_type;
704 };
705
706 #define elf_s390_tdata(abfd) \
707 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
708
709 #define elf_s390_local_plt(abfd) \
710 (elf_s390_tdata (abfd)->local_plt)
711
712 #define elf_s390_local_got_tls_type(abfd) \
713 (elf_s390_tdata (abfd)->local_got_tls_type)
714
715 #define is_s390_elf(bfd) \
716 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
717 && elf_tdata (bfd) != NULL \
718 && elf_object_id (bfd) == S390_ELF_DATA)
719
720 static bfd_boolean
721 elf_s390_mkobject (bfd *abfd)
722 {
723 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
724 S390_ELF_DATA);
725 }
726
727 static bfd_boolean
728 elf_s390_object_p (bfd *abfd)
729 {
730 /* Set the right machine number for an s390 elf32 file. */
731 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
732 }
733
734 /* s390 ELF linker hash table. */
735
736 struct elf_s390_link_hash_table
737 {
738 struct elf_link_hash_table elf;
739
740 /* Short-cuts to get to dynamic linker sections. */
741 asection *sdynbss;
742 asection *srelbss;
743 asection *irelifunc;
744
745 union
746 {
747 bfd_signed_vma refcount;
748 bfd_vma offset;
749 } tls_ldm_got;
750
751 /* Small local sym cache. */
752 struct sym_cache sym_cache;
753 };
754
755 /* Get the s390 ELF linker hash table from a link_info structure. */
756
757 #define elf_s390_hash_table(p) \
758 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
759 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
760
761 #undef ELF64
762 #include "elf-s390-common.c"
763
764 /* Create an entry in an s390 ELF linker hash table. */
765
766 static struct bfd_hash_entry *
767 link_hash_newfunc (struct bfd_hash_entry *entry,
768 struct bfd_hash_table *table,
769 const char *string)
770 {
771 /* Allocate the structure if it has not already been allocated by a
772 subclass. */
773 if (entry == NULL)
774 {
775 entry = bfd_hash_allocate (table,
776 sizeof (struct elf_s390_link_hash_entry));
777 if (entry == NULL)
778 return entry;
779 }
780
781 /* Call the allocation method of the superclass. */
782 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
783 if (entry != NULL)
784 {
785 struct elf_s390_link_hash_entry *eh;
786
787 eh = (struct elf_s390_link_hash_entry *) entry;
788 eh->dyn_relocs = NULL;
789 eh->gotplt_refcount = 0;
790 eh->tls_type = GOT_UNKNOWN;
791 eh->ifunc_resolver_address = 0;
792 eh->ifunc_resolver_section = NULL;
793 }
794
795 return entry;
796 }
797
798 /* Create an s390 ELF linker hash table. */
799
800 static struct bfd_link_hash_table *
801 elf_s390_link_hash_table_create (bfd *abfd)
802 {
803 struct elf_s390_link_hash_table *ret;
804 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
805
806 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
807 if (ret == NULL)
808 return NULL;
809
810 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
811 sizeof (struct elf_s390_link_hash_entry),
812 S390_ELF_DATA))
813 {
814 free (ret);
815 return NULL;
816 }
817
818 return &ret->elf.root;
819 }
820
821 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
822 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
823 hash table. */
824
825 static bfd_boolean
826 elf_s390_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
827 {
828 struct elf_s390_link_hash_table *htab;
829
830 htab = elf_s390_hash_table (info);
831 if (!htab->elf.sgot && !_bfd_elf_create_got_section (dynobj, info))
832 return FALSE;
833
834 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
835 return FALSE;
836
837 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
838 if (!bfd_link_pic (info))
839 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
840
841 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
842 || (!bfd_link_pic (info) && !htab->srelbss))
843 abort ();
844
845 return TRUE;
846 }
847
848 /* Copy the extra info we tack onto an elf_link_hash_entry. */
849
850 static void
851 elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
852 struct elf_link_hash_entry *dir,
853 struct elf_link_hash_entry *ind)
854 {
855 struct elf_s390_link_hash_entry *edir, *eind;
856
857 edir = (struct elf_s390_link_hash_entry *) dir;
858 eind = (struct elf_s390_link_hash_entry *) ind;
859
860 if (eind->dyn_relocs != NULL)
861 {
862 if (edir->dyn_relocs != NULL)
863 {
864 struct elf_dyn_relocs **pp;
865 struct elf_dyn_relocs *p;
866
867 /* Add reloc counts against the indirect sym to the direct sym
868 list. Merge any entries against the same section. */
869 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
870 {
871 struct elf_dyn_relocs *q;
872
873 for (q = edir->dyn_relocs; q != NULL; q = q->next)
874 if (q->sec == p->sec)
875 {
876 q->pc_count += p->pc_count;
877 q->count += p->count;
878 *pp = p->next;
879 break;
880 }
881 if (q == NULL)
882 pp = &p->next;
883 }
884 *pp = edir->dyn_relocs;
885 }
886
887 edir->dyn_relocs = eind->dyn_relocs;
888 eind->dyn_relocs = NULL;
889 }
890
891 if (ind->root.type == bfd_link_hash_indirect
892 && dir->got.refcount <= 0)
893 {
894 edir->tls_type = eind->tls_type;
895 eind->tls_type = GOT_UNKNOWN;
896 }
897
898 if (ELIMINATE_COPY_RELOCS
899 && ind->root.type != bfd_link_hash_indirect
900 && dir->dynamic_adjusted)
901 {
902 /* If called to transfer flags for a weakdef during processing
903 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
904 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
905 dir->ref_dynamic |= ind->ref_dynamic;
906 dir->ref_regular |= ind->ref_regular;
907 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
908 dir->needs_plt |= ind->needs_plt;
909 }
910 else
911 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
912 }
913
914 static int
915 elf_s390_tls_transition (struct bfd_link_info *info,
916 int r_type,
917 int is_local)
918 {
919 if (bfd_link_pic (info))
920 return r_type;
921
922 switch (r_type)
923 {
924 case R_390_TLS_GD32:
925 case R_390_TLS_IE32:
926 if (is_local)
927 return R_390_TLS_LE32;
928 return R_390_TLS_IE32;
929 case R_390_TLS_GOTIE32:
930 if (is_local)
931 return R_390_TLS_LE32;
932 return R_390_TLS_GOTIE32;
933 case R_390_TLS_LDM32:
934 return R_390_TLS_LE32;
935 }
936
937 return r_type;
938 }
939
940 /* Look through the relocs for a section during the first phase, and
941 allocate space in the global offset table or procedure linkage
942 table. */
943
944 static bfd_boolean
945 elf_s390_check_relocs (bfd *abfd,
946 struct bfd_link_info *info,
947 asection *sec,
948 const Elf_Internal_Rela *relocs)
949 {
950 struct elf_s390_link_hash_table *htab;
951 Elf_Internal_Shdr *symtab_hdr;
952 struct elf_link_hash_entry **sym_hashes;
953 const Elf_Internal_Rela *rel;
954 const Elf_Internal_Rela *rel_end;
955 asection *sreloc;
956 bfd_signed_vma *local_got_refcounts;
957 int tls_type, old_tls_type;
958 Elf_Internal_Sym *isym;
959
960 if (bfd_link_relocatable (info))
961 return TRUE;
962
963 BFD_ASSERT (is_s390_elf (abfd));
964
965 htab = elf_s390_hash_table (info);
966 symtab_hdr = &elf_symtab_hdr (abfd);
967 sym_hashes = elf_sym_hashes (abfd);
968 local_got_refcounts = elf_local_got_refcounts (abfd);
969
970 sreloc = NULL;
971
972 rel_end = relocs + sec->reloc_count;
973 for (rel = relocs; rel < rel_end; rel++)
974 {
975 unsigned int r_type;
976 unsigned long r_symndx;
977 struct elf_link_hash_entry *h;
978
979 r_symndx = ELF32_R_SYM (rel->r_info);
980
981 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
982 {
983 /* xgettext:c-format */
984 _bfd_error_handler (_("%B: bad symbol index: %d"),
985 abfd, r_symndx);
986 return FALSE;
987 }
988
989 if (r_symndx < symtab_hdr->sh_info)
990 {
991 /* A local symbol. */
992 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
993 abfd, r_symndx);
994 if (isym == NULL)
995 return FALSE;
996
997 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
998 {
999 struct plt_entry *plt;
1000
1001 if (htab->elf.dynobj == NULL)
1002 htab->elf.dynobj = abfd;
1003
1004 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1005 return FALSE;
1006
1007 if (local_got_refcounts == NULL)
1008 {
1009 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
1010 return FALSE;
1011 local_got_refcounts = elf_local_got_refcounts (abfd);
1012 }
1013 plt = elf_s390_local_plt (abfd);
1014 plt[r_symndx].plt.refcount++;
1015 }
1016 h = NULL;
1017 }
1018 else
1019 {
1020 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1021 while (h->root.type == bfd_link_hash_indirect
1022 || h->root.type == bfd_link_hash_warning)
1023 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1024
1025 /* PR15323, ref flags aren't set for references in the same
1026 object. */
1027 h->root.non_ir_ref = 1;
1028 }
1029
1030 /* Create got section and local_got_refcounts array if they
1031 are needed. */
1032 r_type = elf_s390_tls_transition (info,
1033 ELF32_R_TYPE (rel->r_info),
1034 h == NULL);
1035 switch (r_type)
1036 {
1037 case R_390_GOT12:
1038 case R_390_GOT16:
1039 case R_390_GOT20:
1040 case R_390_GOT32:
1041 case R_390_GOTENT:
1042 case R_390_GOTPLT12:
1043 case R_390_GOTPLT16:
1044 case R_390_GOTPLT20:
1045 case R_390_GOTPLT32:
1046 case R_390_GOTPLTENT:
1047 case R_390_TLS_GD32:
1048 case R_390_TLS_GOTIE12:
1049 case R_390_TLS_GOTIE20:
1050 case R_390_TLS_GOTIE32:
1051 case R_390_TLS_IEENT:
1052 case R_390_TLS_IE32:
1053 case R_390_TLS_LDM32:
1054 if (h == NULL
1055 && local_got_refcounts == NULL)
1056 {
1057 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
1058 return FALSE;
1059 local_got_refcounts = elf_local_got_refcounts (abfd);
1060 }
1061 /* Fall through. */
1062 case R_390_GOTOFF16:
1063 case R_390_GOTOFF32:
1064 case R_390_GOTPC:
1065 case R_390_GOTPCDBL:
1066 if (htab->elf.sgot == NULL)
1067 {
1068 if (htab->elf.dynobj == NULL)
1069 htab->elf.dynobj = abfd;
1070 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
1071 return FALSE;
1072 }
1073 }
1074
1075 if (h != NULL)
1076 {
1077 if (htab->elf.dynobj == NULL)
1078 htab->elf.dynobj = abfd;
1079 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1080 return FALSE;
1081
1082 /* Make sure an IFUNC symbol defined in a non-shared object
1083 always gets a PLT slot. */
1084 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1085 {
1086 /* The symbol is called by the dynamic loader in order
1087 to resolve the relocation. So it is in fact also
1088 referenced. */
1089 h->ref_regular = 1;
1090 h->needs_plt = 1;
1091 }
1092 }
1093 switch (r_type)
1094 {
1095 case R_390_GOTPC:
1096 case R_390_GOTPCDBL:
1097 /* These relocs do not need a GOT slot. They just load the
1098 GOT pointer itself or address something else relative to
1099 the GOT. Since the GOT pointer has been set up above we
1100 are done. */
1101 break;
1102 case R_390_GOTOFF16:
1103 case R_390_GOTOFF32:
1104 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
1105 break;
1106 /* Fall through. */
1107
1108 case R_390_PLT12DBL:
1109 case R_390_PLT16DBL:
1110 case R_390_PLT24DBL:
1111 case R_390_PLT32DBL:
1112 case R_390_PLT32:
1113 case R_390_PLTOFF16:
1114 case R_390_PLTOFF32:
1115 /* This symbol requires a procedure linkage table entry. We
1116 actually build the entry in adjust_dynamic_symbol,
1117 because this might be a case of linking PIC code which is
1118 never referenced by a dynamic object, in which case we
1119 don't need to generate a procedure linkage table entry
1120 after all. */
1121
1122 /* If this is a local symbol, we resolve it directly without
1123 creating a procedure linkage table entry. */
1124 if (h != NULL)
1125 {
1126 h->needs_plt = 1;
1127 h->plt.refcount += 1;
1128 }
1129 break;
1130
1131 case R_390_GOTPLT12:
1132 case R_390_GOTPLT16:
1133 case R_390_GOTPLT20:
1134 case R_390_GOTPLT32:
1135 case R_390_GOTPLTENT:
1136 /* This symbol requires either a procedure linkage table entry
1137 or an entry in the local got. We actually build the entry
1138 in adjust_dynamic_symbol because whether this is really a
1139 global reference can change and with it the fact if we have
1140 to create a plt entry or a local got entry. To be able to
1141 make a once global symbol a local one we have to keep track
1142 of the number of gotplt references that exist for this
1143 symbol. */
1144 if (h != NULL)
1145 {
1146 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1147 h->needs_plt = 1;
1148 h->plt.refcount += 1;
1149 }
1150 else
1151 local_got_refcounts[r_symndx] += 1;
1152 break;
1153
1154 case R_390_TLS_LDM32:
1155 htab->tls_ldm_got.refcount += 1;
1156 break;
1157
1158 case R_390_TLS_IE32:
1159 case R_390_TLS_GOTIE12:
1160 case R_390_TLS_GOTIE20:
1161 case R_390_TLS_GOTIE32:
1162 case R_390_TLS_IEENT:
1163 if (bfd_link_pic (info))
1164 info->flags |= DF_STATIC_TLS;
1165 /* Fall through. */
1166
1167 case R_390_GOT12:
1168 case R_390_GOT16:
1169 case R_390_GOT20:
1170 case R_390_GOT32:
1171 case R_390_GOTENT:
1172 case R_390_TLS_GD32:
1173 /* This symbol requires a global offset table entry. */
1174 switch (r_type)
1175 {
1176 default:
1177 case R_390_GOT12:
1178 case R_390_GOT16:
1179 case R_390_GOT20:
1180 case R_390_GOT32:
1181 case R_390_GOTENT:
1182 tls_type = GOT_NORMAL;
1183 break;
1184 case R_390_TLS_GD32:
1185 tls_type = GOT_TLS_GD;
1186 break;
1187 case R_390_TLS_IE32:
1188 case R_390_TLS_GOTIE32:
1189 tls_type = GOT_TLS_IE;
1190 break;
1191 case R_390_TLS_GOTIE12:
1192 case R_390_TLS_GOTIE20:
1193 case R_390_TLS_IEENT:
1194 tls_type = GOT_TLS_IE_NLT;
1195 break;
1196 }
1197
1198 if (h != NULL)
1199 {
1200 h->got.refcount += 1;
1201 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1202 }
1203 else
1204 {
1205 local_got_refcounts[r_symndx] += 1;
1206 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1207 }
1208 /* If a TLS symbol is accessed using IE at least once,
1209 there is no point to use dynamic model for it. */
1210 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1211 {
1212 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1213 {
1214 _bfd_error_handler
1215 /* xgettext:c-format */
1216 (_("%B: `%s' accessed both as normal and thread local symbol"),
1217 abfd, h->root.root.string);
1218 return FALSE;
1219 }
1220 if (old_tls_type > tls_type)
1221 tls_type = old_tls_type;
1222 }
1223
1224 if (old_tls_type != tls_type)
1225 {
1226 if (h != NULL)
1227 elf_s390_hash_entry (h)->tls_type = tls_type;
1228 else
1229 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1230 }
1231
1232 if (r_type != R_390_TLS_IE32)
1233 break;
1234 /* Fall through. */
1235
1236 case R_390_TLS_LE32:
1237 /* For static linking and executables this reloc will be
1238 calculated at linktime otherwise a TLS_TPOFF runtime
1239 reloc will be generated. */
1240 if (r_type == R_390_TLS_LE32 && bfd_link_pie (info))
1241 break;
1242
1243 if (!bfd_link_pic (info))
1244 break;
1245 info->flags |= DF_STATIC_TLS;
1246 /* Fall through. */
1247
1248 case R_390_8:
1249 case R_390_16:
1250 case R_390_32:
1251 case R_390_PC16:
1252 case R_390_PC12DBL:
1253 case R_390_PC16DBL:
1254 case R_390_PC24DBL:
1255 case R_390_PC32DBL:
1256 case R_390_PC32:
1257 if (h != NULL && bfd_link_executable (info))
1258 {
1259 /* If this reloc is in a read-only section, we might
1260 need a copy reloc. We can't check reliably at this
1261 stage whether the section is read-only, as input
1262 sections have not yet been mapped to output sections.
1263 Tentatively set the flag for now, and correct in
1264 adjust_dynamic_symbol. */
1265 h->non_got_ref = 1;
1266
1267 if (!bfd_link_pic (info))
1268 {
1269 /* We may need a .plt entry if the function this reloc
1270 refers to is in a shared lib. */
1271 h->plt.refcount += 1;
1272 }
1273 }
1274
1275 /* If we are creating a shared library, and this is a reloc
1276 against a global symbol, or a non PC relative reloc
1277 against a local symbol, then we need to copy the reloc
1278 into the shared library. However, if we are linking with
1279 -Bsymbolic, we do not need to copy a reloc against a
1280 global symbol which is defined in an object we are
1281 including in the link (i.e., DEF_REGULAR is set). At
1282 this point we have not seen all the input files, so it is
1283 possible that DEF_REGULAR is not set now but will be set
1284 later (it is never cleared). In case of a weak definition,
1285 DEF_REGULAR may be cleared later by a strong definition in
1286 a shared library. We account for that possibility below by
1287 storing information in the relocs_copied field of the hash
1288 table entry. A similar situation occurs when creating
1289 shared libraries and symbol visibility changes render the
1290 symbol local.
1291
1292 If on the other hand, we are creating an executable, we
1293 may need to keep relocations for symbols satisfied by a
1294 dynamic library if we manage to avoid copy relocs for the
1295 symbol. */
1296 if ((bfd_link_pic (info)
1297 && (sec->flags & SEC_ALLOC) != 0
1298 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
1299 && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL
1300 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
1301 && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL
1302 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
1303 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1304 || (h != NULL
1305 && (! SYMBOLIC_BIND (info, h)
1306 || h->root.type == bfd_link_hash_defweak
1307 || !h->def_regular))))
1308 || (ELIMINATE_COPY_RELOCS
1309 && !bfd_link_pic (info)
1310 && (sec->flags & SEC_ALLOC) != 0
1311 && h != NULL
1312 && (h->root.type == bfd_link_hash_defweak
1313 || !h->def_regular)))
1314 {
1315 struct elf_dyn_relocs *p;
1316 struct elf_dyn_relocs **head;
1317
1318 /* We must copy these reloc types into the output file.
1319 Create a reloc section in dynobj and make room for
1320 this reloc. */
1321 if (sreloc == NULL)
1322 {
1323 if (htab->elf.dynobj == NULL)
1324 htab->elf.dynobj = abfd;
1325
1326 sreloc = _bfd_elf_make_dynamic_reloc_section
1327 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1328
1329 if (sreloc == NULL)
1330 return FALSE;
1331 }
1332
1333 /* If this is a global symbol, we count the number of
1334 relocations we need for this symbol. */
1335 if (h != NULL)
1336 {
1337 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1338 }
1339 else
1340 {
1341 /* Track dynamic relocs needed for local syms too.
1342 We really need local syms available to do this
1343 easily. Oh well. */
1344 asection *s;
1345 void *vpp;
1346
1347 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1348 abfd, r_symndx);
1349 if (isym == NULL)
1350 return FALSE;
1351
1352 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1353 if (s == NULL)
1354 s = sec;
1355
1356 vpp = &elf_section_data (s)->local_dynrel;
1357 head = (struct elf_dyn_relocs **) vpp;
1358 }
1359
1360 p = *head;
1361 if (p == NULL || p->sec != sec)
1362 {
1363 bfd_size_type amt = sizeof *p;
1364
1365 p = ((struct elf_dyn_relocs *)
1366 bfd_alloc (htab->elf.dynobj, amt));
1367 if (p == NULL)
1368 return FALSE;
1369 p->next = *head;
1370 *head = p;
1371 p->sec = sec;
1372 p->count = 0;
1373 p->pc_count = 0;
1374 }
1375
1376 p->count += 1;
1377 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
1378 || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL
1379 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
1380 || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL
1381 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
1382 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1383 p->pc_count += 1;
1384 }
1385 break;
1386
1387 /* This relocation describes the C++ object vtable hierarchy.
1388 Reconstruct it for later use during GC. */
1389 case R_390_GNU_VTINHERIT:
1390 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1391 return FALSE;
1392 break;
1393
1394 /* This relocation describes which C++ vtable entries are actually
1395 used. Record for later use during GC. */
1396 case R_390_GNU_VTENTRY:
1397 BFD_ASSERT (h != NULL);
1398 if (h != NULL
1399 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1400 return FALSE;
1401 break;
1402
1403 default:
1404 break;
1405 }
1406 }
1407
1408 return TRUE;
1409 }
1410
1411 /* Return the section that should be marked against GC for a given
1412 relocation. */
1413
1414 static asection *
1415 elf_s390_gc_mark_hook (asection *sec,
1416 struct bfd_link_info *info,
1417 Elf_Internal_Rela *rel,
1418 struct elf_link_hash_entry *h,
1419 Elf_Internal_Sym *sym)
1420 {
1421 if (h != NULL)
1422 switch (ELF32_R_TYPE (rel->r_info))
1423 {
1424 case R_390_GNU_VTINHERIT:
1425 case R_390_GNU_VTENTRY:
1426 return NULL;
1427 }
1428 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1429
1430 }
1431
1432 /* Update the got entry reference counts for the section being removed. */
1433
1434 static bfd_boolean
1435 elf_s390_gc_sweep_hook (bfd *abfd,
1436 struct bfd_link_info *info,
1437 asection *sec,
1438 const Elf_Internal_Rela *relocs)
1439 {
1440 struct elf_s390_link_hash_table *htab;
1441 Elf_Internal_Shdr *symtab_hdr;
1442 struct elf_link_hash_entry **sym_hashes;
1443 bfd_signed_vma *local_got_refcounts;
1444 const Elf_Internal_Rela *rel, *relend;
1445
1446 if (bfd_link_relocatable (info))
1447 return TRUE;
1448
1449 htab = elf_s390_hash_table (info);
1450 if (htab == NULL)
1451 return FALSE;
1452
1453 elf_section_data (sec)->local_dynrel = NULL;
1454
1455 symtab_hdr = &elf_symtab_hdr (abfd);
1456 sym_hashes = elf_sym_hashes (abfd);
1457 local_got_refcounts = elf_local_got_refcounts (abfd);
1458
1459 relend = relocs + sec->reloc_count;
1460 for (rel = relocs; rel < relend; rel++)
1461 {
1462 unsigned long r_symndx;
1463 unsigned int r_type;
1464 struct elf_link_hash_entry *h = NULL;
1465
1466 r_symndx = ELF32_R_SYM (rel->r_info);
1467 if (r_symndx >= symtab_hdr->sh_info)
1468 {
1469 struct elf_s390_link_hash_entry *eh;
1470 struct elf_dyn_relocs **pp;
1471 struct elf_dyn_relocs *p;
1472
1473 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1474 while (h->root.type == bfd_link_hash_indirect
1475 || h->root.type == bfd_link_hash_warning)
1476 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1477 eh = (struct elf_s390_link_hash_entry *) h;
1478
1479 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1480 if (p->sec == sec)
1481 {
1482 /* Everything must go for SEC. */
1483 *pp = p->next;
1484 break;
1485 }
1486 }
1487 else
1488 {
1489 Elf_Internal_Sym *isym;
1490
1491 /* A local symbol. */
1492 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1493 abfd, r_symndx);
1494 if (isym == NULL)
1495 return FALSE;
1496
1497 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1498 {
1499 struct plt_entry *plt = elf_s390_local_plt (abfd);
1500 if (plt[r_symndx].plt.refcount > 0)
1501 plt[r_symndx].plt.refcount--;
1502 }
1503 }
1504
1505 r_type = ELF32_R_TYPE (rel->r_info);
1506 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1507 switch (r_type)
1508 {
1509 case R_390_TLS_LDM32:
1510 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1511 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1512 break;
1513
1514 case R_390_GOTOFF16:
1515 case R_390_GOTOFF32:
1516 if (h != NULL && s390_is_ifunc_symbol_p (h) && h->def_regular)
1517 {
1518 h->plt.refcount--;
1519 break;
1520 }
1521
1522 case R_390_GOTPC:
1523 case R_390_GOTPCDBL:
1524 break;
1525
1526 case R_390_TLS_GD32:
1527 case R_390_TLS_IE32:
1528 case R_390_TLS_GOTIE12:
1529 case R_390_TLS_GOTIE20:
1530 case R_390_TLS_GOTIE32:
1531 case R_390_TLS_IEENT:
1532 case R_390_GOT12:
1533 case R_390_GOT16:
1534 case R_390_GOT20:
1535 case R_390_GOT32:
1536 case R_390_GOTENT:
1537 if (h != NULL)
1538 {
1539 if (h->got.refcount > 0)
1540 h->got.refcount -= 1;
1541 }
1542 else if (local_got_refcounts != NULL)
1543 {
1544 if (local_got_refcounts[r_symndx] > 0)
1545 local_got_refcounts[r_symndx] -= 1;
1546 }
1547 break;
1548
1549 case R_390_8:
1550 case R_390_12:
1551 case R_390_16:
1552 case R_390_20:
1553 case R_390_32:
1554 case R_390_PC16:
1555 case R_390_PC12DBL:
1556 case R_390_PC16DBL:
1557 case R_390_PC24DBL:
1558 case R_390_PC32DBL:
1559 case R_390_PC32:
1560 if (bfd_link_pic (info))
1561 break;
1562 /* Fall through. */
1563
1564 case R_390_PLT12DBL:
1565 case R_390_PLT16DBL:
1566 case R_390_PLT24DBL:
1567 case R_390_PLT32DBL:
1568 case R_390_PLT32:
1569 case R_390_PLTOFF16:
1570 case R_390_PLTOFF32:
1571 if (h != NULL)
1572 {
1573 if (h->plt.refcount > 0)
1574 h->plt.refcount -= 1;
1575 }
1576 break;
1577
1578 case R_390_GOTPLT12:
1579 case R_390_GOTPLT16:
1580 case R_390_GOTPLT20:
1581 case R_390_GOTPLT32:
1582 case R_390_GOTPLTENT:
1583 if (h != NULL)
1584 {
1585 if (h->plt.refcount > 0)
1586 {
1587 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1588 h->plt.refcount -= 1;
1589 }
1590 }
1591 else if (local_got_refcounts != NULL)
1592 {
1593 if (local_got_refcounts[r_symndx] > 0)
1594 local_got_refcounts[r_symndx] -= 1;
1595 }
1596 break;
1597
1598 default:
1599 break;
1600 }
1601 }
1602
1603 return TRUE;
1604 }
1605
1606 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1607 entry but we found we will not create any. Called when we find we will
1608 not have any PLT for this symbol, by for example
1609 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1610 or elf_s390_size_dynamic_sections if no dynamic sections will be
1611 created (we're only linking static objects). */
1612
1613 static void
1614 elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
1615 {
1616 if (h->elf.root.type == bfd_link_hash_warning)
1617 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1618
1619 if (h->gotplt_refcount <= 0)
1620 return;
1621
1622 /* We simply add the number of gotplt references to the number
1623 * of got references for this symbol. */
1624 h->elf.got.refcount += h->gotplt_refcount;
1625 h->gotplt_refcount = -1;
1626 }
1627
1628 /* Adjust a symbol defined by a dynamic object and referenced by a
1629 regular object. The current definition is in some section of the
1630 dynamic object, but we're not including those sections. We have to
1631 change the definition to something the rest of the link can
1632 understand. */
1633
1634 static bfd_boolean
1635 elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1636 struct elf_link_hash_entry *h)
1637 {
1638 struct elf_s390_link_hash_table *htab;
1639 asection *s;
1640
1641 /* STT_GNU_IFUNC symbol must go through PLT. */
1642 if (s390_is_ifunc_symbol_p (h))
1643 {
1644 /* All local STT_GNU_IFUNC references must be treated as local
1645 calls via local PLT. */
1646 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1647 {
1648 bfd_size_type pc_count = 0, count = 0;
1649 struct elf_dyn_relocs **pp;
1650 struct elf_s390_link_hash_entry *eh;
1651 struct elf_dyn_relocs *p;
1652
1653 eh = (struct elf_s390_link_hash_entry *) h;
1654 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1655 {
1656 pc_count += p->pc_count;
1657 p->count -= p->pc_count;
1658 p->pc_count = 0;
1659 count += p->count;
1660 if (p->count == 0)
1661 *pp = p->next;
1662 else
1663 pp = &p->next;
1664 }
1665
1666 if (pc_count || count)
1667 {
1668 h->needs_plt = 1;
1669 h->non_got_ref = 1;
1670 if (h->plt.refcount <= 0)
1671 h->plt.refcount = 1;
1672 else
1673 h->plt.refcount += 1;
1674 }
1675 }
1676
1677 if (h->plt.refcount <= 0)
1678 {
1679 h->plt.offset = (bfd_vma) -1;
1680 h->needs_plt = 0;
1681 }
1682 return TRUE;
1683 }
1684
1685 /* If this is a function, put it in the procedure linkage table. We
1686 will fill in the contents of the procedure linkage table later
1687 (although we could actually do it here). */
1688 if (h->type == STT_FUNC
1689 || h->needs_plt)
1690 {
1691 if (h->plt.refcount <= 0
1692 || SYMBOL_CALLS_LOCAL (info, h)
1693 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1694 && h->root.type != bfd_link_hash_undefweak))
1695 {
1696 /* This case can occur if we saw a PLT32 reloc in an input
1697 file, but the symbol was never referred to by a dynamic
1698 object, or if all references were garbage collected. In
1699 such a case, we don't actually need to build a procedure
1700 linkage table, and we can just do a PC32 reloc instead. */
1701 h->plt.offset = (bfd_vma) -1;
1702 h->needs_plt = 0;
1703 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1704 }
1705
1706 return TRUE;
1707 }
1708 else
1709 /* It's possible that we incorrectly decided a .plt reloc was
1710 needed for an R_390_PC32 reloc to a non-function sym in
1711 check_relocs. We can't decide accurately between function and
1712 non-function syms in check-relocs; Objects loaded later in
1713 the link may change h->type. So fix it now. */
1714 h->plt.offset = (bfd_vma) -1;
1715
1716 /* If this is a weak symbol, and there is a real definition, the
1717 processor independent code will have arranged for us to see the
1718 real definition first, and we can just use the same value. */
1719 if (h->u.weakdef != NULL)
1720 {
1721 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1722 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1723 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1724 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1725 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1726 h->non_got_ref = h->u.weakdef->non_got_ref;
1727 return TRUE;
1728 }
1729
1730 /* This is a reference to a symbol defined by a dynamic object which
1731 is not a function. */
1732
1733 /* If we are creating a shared library, we must presume that the
1734 only references to the symbol are via the global offset table.
1735 For such cases we need not do anything here; the relocations will
1736 be handled correctly by relocate_section. */
1737 if (bfd_link_pic (info))
1738 return TRUE;
1739
1740 /* If there are no references to this symbol that do not use the
1741 GOT, we don't need to generate a copy reloc. */
1742 if (!h->non_got_ref)
1743 return TRUE;
1744
1745 /* If -z nocopyreloc was given, we won't generate them either. */
1746 if (info->nocopyreloc)
1747 {
1748 h->non_got_ref = 0;
1749 return TRUE;
1750 }
1751
1752 if (ELIMINATE_COPY_RELOCS)
1753 {
1754 struct elf_s390_link_hash_entry * eh;
1755 struct elf_dyn_relocs *p;
1756
1757 eh = (struct elf_s390_link_hash_entry *) h;
1758 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1759 {
1760 s = p->sec->output_section;
1761 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1762 break;
1763 }
1764
1765 /* If we didn't find any dynamic relocs in read-only sections, then
1766 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1767 if (p == NULL)
1768 {
1769 h->non_got_ref = 0;
1770 return TRUE;
1771 }
1772 }
1773
1774 /* We must allocate the symbol in our .dynbss section, which will
1775 become part of the .bss section of the executable. There will be
1776 an entry for this symbol in the .dynsym section. The dynamic
1777 object will contain position independent code, so all references
1778 from the dynamic object to this symbol will go through the global
1779 offset table. The dynamic linker will use the .dynsym entry to
1780 determine the address it must put in the global offset table, so
1781 both the dynamic object and the regular object will refer to the
1782 same memory location for the variable. */
1783
1784 htab = elf_s390_hash_table (info);
1785
1786 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1787 copy the initial value out of the dynamic object and into the
1788 runtime process image. */
1789 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
1790 {
1791 htab->srelbss->size += sizeof (Elf32_External_Rela);
1792 h->needs_copy = 1;
1793 }
1794
1795 s = htab->sdynbss;
1796
1797 return _bfd_elf_adjust_dynamic_copy (info, h, s);
1798 }
1799
1800 /* Allocate space in .plt, .got and associated reloc sections for
1801 dynamic relocs. */
1802
1803 static bfd_boolean
1804 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1805 {
1806 struct bfd_link_info *info;
1807 struct elf_s390_link_hash_table *htab;
1808 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
1809 struct elf_dyn_relocs *p;
1810
1811 if (h->root.type == bfd_link_hash_indirect)
1812 return TRUE;
1813
1814 info = (struct bfd_link_info *) inf;
1815 htab = elf_s390_hash_table (info);
1816
1817 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1818 here if it is defined and referenced in a non-shared object. */
1819 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1820 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
1821 else if (htab->elf.dynamic_sections_created
1822 && h->plt.refcount > 0)
1823 {
1824 /* Make sure this symbol is output as a dynamic symbol.
1825 Undefined weak syms won't yet be marked as dynamic. */
1826 if (h->dynindx == -1
1827 && !h->forced_local)
1828 {
1829 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1830 return FALSE;
1831 }
1832
1833 if (bfd_link_pic (info)
1834 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1835 {
1836 asection *s = htab->elf.splt;
1837
1838 /* If this is the first .plt entry, make room for the special
1839 first entry. */
1840 if (s->size == 0)
1841 s->size += PLT_FIRST_ENTRY_SIZE;
1842
1843 h->plt.offset = s->size;
1844
1845 /* If this symbol is not defined in a regular file, and we are
1846 not generating a shared library, then set the symbol to this
1847 location in the .plt. This is required to make function
1848 pointers compare as equal between the normal executable and
1849 the shared library. */
1850 if (! bfd_link_pic (info)
1851 && !h->def_regular)
1852 {
1853 h->root.u.def.section = s;
1854 h->root.u.def.value = h->plt.offset;
1855 }
1856
1857 /* Make room for this entry. */
1858 s->size += PLT_ENTRY_SIZE;
1859
1860 /* We also need to make an entry in the .got.plt section, which
1861 will be placed in the .got section by the linker script. */
1862 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
1863
1864 /* We also need to make an entry in the .rela.plt section. */
1865 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
1866 }
1867 else
1868 {
1869 h->plt.offset = (bfd_vma) -1;
1870 h->needs_plt = 0;
1871 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1872 }
1873 }
1874 else
1875 {
1876 h->plt.offset = (bfd_vma) -1;
1877 h->needs_plt = 0;
1878 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1879 }
1880
1881 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1882 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1883 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1884 we can save the dynamic TLS relocation. */
1885 if (h->got.refcount > 0
1886 && !bfd_link_pic (info)
1887 && h->dynindx == -1
1888 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1889 {
1890 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1891 /* For the GOTIE access without a literal pool entry the offset has
1892 to be stored somewhere. The immediate value in the instruction
1893 is not bit enough so the value is stored in the got. */
1894 {
1895 h->got.offset = htab->elf.sgot->size;
1896 htab->elf.sgot->size += GOT_ENTRY_SIZE;
1897 }
1898 else
1899 h->got.offset = (bfd_vma) -1;
1900 }
1901 else if (h->got.refcount > 0)
1902 {
1903 asection *s;
1904 bfd_boolean dyn;
1905 int tls_type = elf_s390_hash_entry(h)->tls_type;
1906
1907 /* Make sure this symbol is output as a dynamic symbol.
1908 Undefined weak syms won't yet be marked as dynamic. */
1909 if (h->dynindx == -1
1910 && !h->forced_local)
1911 {
1912 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1913 return FALSE;
1914 }
1915
1916 s = htab->elf.sgot;
1917 h->got.offset = s->size;
1918 s->size += GOT_ENTRY_SIZE;
1919 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1920 if (tls_type == GOT_TLS_GD)
1921 s->size += GOT_ENTRY_SIZE;
1922 dyn = htab->elf.dynamic_sections_created;
1923 /* R_390_TLS_IE32 needs one dynamic relocation,
1924 R_390_TLS_GD32 needs one if local symbol and two if global. */
1925 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1926 || tls_type >= GOT_TLS_IE)
1927 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
1928 else if (tls_type == GOT_TLS_GD)
1929 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela);
1930 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1931 || h->root.type != bfd_link_hash_undefweak)
1932 && (bfd_link_pic (info)
1933 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1934 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
1935 }
1936 else
1937 h->got.offset = (bfd_vma) -1;
1938
1939 if (eh->dyn_relocs == NULL)
1940 return TRUE;
1941
1942 /* In the shared -Bsymbolic case, discard space allocated for
1943 dynamic pc-relative relocs against symbols which turn out to be
1944 defined in regular objects. For the normal shared case, discard
1945 space for pc-relative relocs that have become local due to symbol
1946 visibility changes. */
1947
1948 if (bfd_link_pic (info))
1949 {
1950 if (SYMBOL_CALLS_LOCAL (info, h))
1951 {
1952 struct elf_dyn_relocs **pp;
1953
1954 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1955 {
1956 p->count -= p->pc_count;
1957 p->pc_count = 0;
1958 if (p->count == 0)
1959 *pp = p->next;
1960 else
1961 pp = &p->next;
1962 }
1963 }
1964
1965 /* Also discard relocs on undefined weak syms with non-default
1966 visibility. */
1967 if (eh->dyn_relocs != NULL
1968 && h->root.type == bfd_link_hash_undefweak)
1969 {
1970 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1971 eh->dyn_relocs = NULL;
1972
1973 /* Make sure undefined weak symbols are output as a dynamic
1974 symbol in PIEs. */
1975 else if (h->dynindx == -1
1976 && !h->forced_local)
1977 {
1978 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1979 return FALSE;
1980 }
1981 }
1982 }
1983 else if (ELIMINATE_COPY_RELOCS)
1984 {
1985 /* For the non-shared case, discard space for relocs against
1986 symbols which turn out to need copy relocs or are not
1987 dynamic. */
1988
1989 if (!h->non_got_ref
1990 && ((h->def_dynamic
1991 && !h->def_regular)
1992 || (htab->elf.dynamic_sections_created
1993 && (h->root.type == bfd_link_hash_undefweak
1994 || h->root.type == bfd_link_hash_undefined))))
1995 {
1996 /* Make sure this symbol is output as a dynamic symbol.
1997 Undefined weak syms won't yet be marked as dynamic. */
1998 if (h->dynindx == -1
1999 && !h->forced_local)
2000 {
2001 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2002 return FALSE;
2003 }
2004
2005 /* If that succeeded, we know we'll be keeping all the
2006 relocs. */
2007 if (h->dynindx != -1)
2008 goto keep;
2009 }
2010
2011 eh->dyn_relocs = NULL;
2012
2013 keep: ;
2014 }
2015
2016 /* Finally, allocate space. */
2017 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2018 {
2019 asection *sreloc = elf_section_data (p->sec)->sreloc;
2020
2021 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2022 }
2023
2024 return TRUE;
2025 }
2026
2027 /* Find any dynamic relocs that apply to read-only sections. */
2028
2029 static bfd_boolean
2030 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2031 {
2032 struct elf_s390_link_hash_entry *eh;
2033 struct elf_dyn_relocs *p;
2034
2035 eh = (struct elf_s390_link_hash_entry *) h;
2036 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2037 {
2038 asection *s = p->sec->output_section;
2039
2040 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2041 {
2042 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2043
2044 info->flags |= DF_TEXTREL;
2045
2046 /* Not an error, just cut short the traversal. */
2047 return FALSE;
2048 }
2049 }
2050 return TRUE;
2051 }
2052
2053 /* Set the sizes of the dynamic sections. */
2054
2055 static bfd_boolean
2056 elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2057 struct bfd_link_info *info)
2058 {
2059 struct elf_s390_link_hash_table *htab;
2060 bfd *dynobj;
2061 asection *s;
2062 bfd_boolean relocs;
2063 bfd *ibfd;
2064
2065 htab = elf_s390_hash_table (info);
2066 dynobj = htab->elf.dynobj;
2067 if (dynobj == NULL)
2068 abort ();
2069
2070 if (htab->elf.dynamic_sections_created)
2071 {
2072 /* Set the contents of the .interp section to the interpreter. */
2073 if (bfd_link_executable (info) && !info->nointerp)
2074 {
2075 s = bfd_get_linker_section (dynobj, ".interp");
2076 if (s == NULL)
2077 abort ();
2078 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2079 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2080 }
2081 }
2082
2083 /* Set up .got offsets for local syms, and space for local dynamic
2084 relocs. */
2085 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2086 {
2087 bfd_signed_vma *local_got;
2088 bfd_signed_vma *end_local_got;
2089 char *local_tls_type;
2090 bfd_size_type locsymcount;
2091 Elf_Internal_Shdr *symtab_hdr;
2092 asection *srela;
2093 struct plt_entry *local_plt;
2094 unsigned int i;
2095
2096 if (! is_s390_elf (ibfd))
2097 continue;
2098
2099 for (s = ibfd->sections; s != NULL; s = s->next)
2100 {
2101 struct elf_dyn_relocs *p;
2102
2103 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2104 {
2105 if (!bfd_is_abs_section (p->sec)
2106 && bfd_is_abs_section (p->sec->output_section))
2107 {
2108 /* Input section has been discarded, either because
2109 it is a copy of a linkonce section or due to
2110 linker script /DISCARD/, so we'll be discarding
2111 the relocs too. */
2112 }
2113 else if (p->count != 0)
2114 {
2115 srela = elf_section_data (p->sec)->sreloc;
2116 srela->size += p->count * sizeof (Elf32_External_Rela);
2117 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2118 info->flags |= DF_TEXTREL;
2119 }
2120 }
2121 }
2122
2123 local_got = elf_local_got_refcounts (ibfd);
2124 if (!local_got)
2125 continue;
2126
2127 symtab_hdr = &elf_symtab_hdr (ibfd);
2128 locsymcount = symtab_hdr->sh_info;
2129 end_local_got = local_got + locsymcount;
2130 local_tls_type = elf_s390_local_got_tls_type (ibfd);
2131 s = htab->elf.sgot;
2132 srela = htab->elf.srelgot;
2133 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2134 {
2135 if (*local_got > 0)
2136 {
2137 *local_got = s->size;
2138 s->size += GOT_ENTRY_SIZE;
2139 if (*local_tls_type == GOT_TLS_GD)
2140 s->size += GOT_ENTRY_SIZE;
2141 if (bfd_link_pic (info))
2142 srela->size += sizeof (Elf32_External_Rela);
2143 }
2144 else
2145 *local_got = (bfd_vma) -1;
2146 }
2147 local_plt = elf_s390_local_plt (ibfd);
2148 for (i = 0; i < symtab_hdr->sh_info; i++)
2149 {
2150 if (local_plt[i].plt.refcount > 0)
2151 {
2152 local_plt[i].plt.offset = htab->elf.iplt->size;
2153 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2154 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2155 htab->elf.irelplt->size += RELA_ENTRY_SIZE;
2156 }
2157 else
2158 local_plt[i].plt.offset = (bfd_vma) -1;
2159 }
2160 }
2161
2162 if (htab->tls_ldm_got.refcount > 0)
2163 {
2164 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2165 relocs. */
2166 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2167 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2168 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
2169 }
2170 else
2171 htab->tls_ldm_got.offset = -1;
2172
2173 /* Allocate global sym .plt and .got entries, and space for global
2174 sym dynamic relocs. */
2175 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2176
2177 /* We now have determined the sizes of the various dynamic sections.
2178 Allocate memory for them. */
2179 relocs = FALSE;
2180 for (s = dynobj->sections; s != NULL; s = s->next)
2181 {
2182 if ((s->flags & SEC_LINKER_CREATED) == 0)
2183 continue;
2184
2185 if (s == htab->elf.splt
2186 || s == htab->elf.sgot
2187 || s == htab->elf.sgotplt
2188 || s == htab->sdynbss
2189 || s == htab->elf.iplt
2190 || s == htab->elf.igotplt
2191 || s == htab->irelifunc)
2192 {
2193 /* Strip this section if we don't need it; see the
2194 comment below. */
2195 }
2196 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2197 {
2198 if (s->size != 0)
2199 relocs = TRUE;
2200
2201 /* We use the reloc_count field as a counter if we need
2202 to copy relocs into the output file. */
2203 s->reloc_count = 0;
2204 }
2205 else
2206 {
2207 /* It's not one of our sections, so don't allocate space. */
2208 continue;
2209 }
2210
2211 if (s->size == 0)
2212 {
2213 /* If we don't need this section, strip it from the
2214 output file. This is to handle .rela.bss and
2215 .rela.plt. We must create it in
2216 create_dynamic_sections, because it must be created
2217 before the linker maps input sections to output
2218 sections. The linker does that before
2219 adjust_dynamic_symbol is called, and it is that
2220 function which decides whether anything needs to go
2221 into these sections. */
2222
2223 s->flags |= SEC_EXCLUDE;
2224 continue;
2225 }
2226
2227 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2228 continue;
2229
2230 /* Allocate memory for the section contents. We use bfd_zalloc
2231 here in case unused entries are not reclaimed before the
2232 section's contents are written out. This should not happen,
2233 but this way if it does, we get a R_390_NONE reloc instead
2234 of garbage. */
2235 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2236 if (s->contents == NULL)
2237 return FALSE;
2238 }
2239
2240 if (htab->elf.dynamic_sections_created)
2241 {
2242 /* Add some entries to the .dynamic section. We fill in the
2243 values later, in elf_s390_finish_dynamic_sections, but we
2244 must add the entries now so that we get the correct size for
2245 the .dynamic section. The DT_DEBUG entry is filled in by the
2246 dynamic linker and used by the debugger. */
2247 #define add_dynamic_entry(TAG, VAL) \
2248 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2249
2250 if (bfd_link_executable (info))
2251 {
2252 if (!add_dynamic_entry (DT_DEBUG, 0))
2253 return FALSE;
2254 }
2255
2256 if (htab->elf.splt->size != 0)
2257 {
2258 if (!add_dynamic_entry (DT_PLTGOT, 0)
2259 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2260 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2261 || !add_dynamic_entry (DT_JMPREL, 0))
2262 return FALSE;
2263 }
2264
2265 if (relocs)
2266 {
2267 if (!add_dynamic_entry (DT_RELA, 0)
2268 || !add_dynamic_entry (DT_RELASZ, 0)
2269 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2270 return FALSE;
2271
2272 /* If any dynamic relocs apply to a read-only section,
2273 then we need a DT_TEXTREL entry. */
2274 if ((info->flags & DF_TEXTREL) == 0)
2275 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
2276
2277 if ((info->flags & DF_TEXTREL) != 0)
2278 {
2279 if (!add_dynamic_entry (DT_TEXTREL, 0))
2280 return FALSE;
2281 }
2282 }
2283 }
2284 #undef add_dynamic_entry
2285
2286 return TRUE;
2287 }
2288
2289 /* Return the base VMA address which should be subtracted from real addresses
2290 when resolving @dtpoff relocation.
2291 This is PT_TLS segment p_vaddr. */
2292
2293 static bfd_vma
2294 dtpoff_base (struct bfd_link_info *info)
2295 {
2296 /* If tls_sec is NULL, we should have signalled an error already. */
2297 if (elf_hash_table (info)->tls_sec == NULL)
2298 return 0;
2299 return elf_hash_table (info)->tls_sec->vma;
2300 }
2301
2302 /* Return the relocation value for @tpoff relocation
2303 if STT_TLS virtual address is ADDRESS. */
2304
2305 static bfd_vma
2306 tpoff (struct bfd_link_info *info, bfd_vma address)
2307 {
2308 struct elf_link_hash_table *htab = elf_hash_table (info);
2309
2310 /* If tls_sec is NULL, we should have signalled an error already. */
2311 if (htab->tls_sec == NULL)
2312 return 0;
2313 return htab->tls_size + htab->tls_sec->vma - address;
2314 }
2315
2316 /* Complain if TLS instruction relocation is against an invalid
2317 instruction. */
2318
2319 static void
2320 invalid_tls_insn (bfd *input_bfd,
2321 asection *input_section,
2322 Elf_Internal_Rela *rel)
2323 {
2324 reloc_howto_type *howto;
2325
2326 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2327 _bfd_error_handler
2328 /* xgettext:c-format */
2329 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2330 input_bfd,
2331 input_section,
2332 (long) rel->r_offset,
2333 howto->name);
2334 bfd_set_error (bfd_error_bad_value);
2335 }
2336
2337 /* Relocate a 390 ELF section. */
2338
2339 static bfd_boolean
2340 elf_s390_relocate_section (bfd *output_bfd,
2341 struct bfd_link_info *info,
2342 bfd *input_bfd,
2343 asection *input_section,
2344 bfd_byte *contents,
2345 Elf_Internal_Rela *relocs,
2346 Elf_Internal_Sym *local_syms,
2347 asection **local_sections)
2348 {
2349 struct elf_s390_link_hash_table *htab;
2350 Elf_Internal_Shdr *symtab_hdr;
2351 struct elf_link_hash_entry **sym_hashes;
2352 bfd_vma *local_got_offsets;
2353 Elf_Internal_Rela *rel;
2354 Elf_Internal_Rela *relend;
2355
2356 BFD_ASSERT (is_s390_elf (input_bfd));
2357
2358 htab = elf_s390_hash_table (info);
2359 symtab_hdr = &elf_symtab_hdr (input_bfd);
2360 sym_hashes = elf_sym_hashes (input_bfd);
2361 local_got_offsets = elf_local_got_offsets (input_bfd);
2362
2363 rel = relocs;
2364 relend = relocs + input_section->reloc_count;
2365 for (; rel < relend; rel++)
2366 {
2367 unsigned int r_type;
2368 reloc_howto_type *howto;
2369 unsigned long r_symndx;
2370 struct elf_link_hash_entry *h;
2371 Elf_Internal_Sym *sym;
2372 asection *sec;
2373 bfd_vma off;
2374 bfd_vma relocation;
2375 bfd_boolean unresolved_reloc;
2376 bfd_reloc_status_type r;
2377 int tls_type;
2378 asection *base_got = htab->elf.sgot;
2379
2380 r_type = ELF32_R_TYPE (rel->r_info);
2381 if (r_type == (int) R_390_GNU_VTINHERIT
2382 || r_type == (int) R_390_GNU_VTENTRY)
2383 continue;
2384 if (r_type >= (int) R_390_max)
2385 {
2386 bfd_set_error (bfd_error_bad_value);
2387 return FALSE;
2388 }
2389
2390 howto = elf_howto_table + r_type;
2391 r_symndx = ELF32_R_SYM (rel->r_info);
2392
2393 h = NULL;
2394 sym = NULL;
2395 sec = NULL;
2396 unresolved_reloc = FALSE;
2397 if (r_symndx < symtab_hdr->sh_info)
2398 {
2399 sym = local_syms + r_symndx;
2400 sec = local_sections[r_symndx];
2401 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2402 {
2403 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2404 if (local_plt == NULL)
2405 return FALSE;
2406
2407 /* Address of the PLT slot. */
2408 relocation = (htab->elf.iplt->output_section->vma
2409 + htab->elf.iplt->output_offset
2410 + local_plt[r_symndx].plt.offset);
2411
2412 switch (r_type)
2413 {
2414 case R_390_PLTOFF16:
2415 case R_390_PLTOFF32:
2416 relocation -= htab->elf.sgot->output_section->vma;
2417 break;
2418 case R_390_GOTPLT12:
2419 case R_390_GOTPLT16:
2420 case R_390_GOTPLT20:
2421 case R_390_GOTPLT32:
2422 case R_390_GOTPLTENT:
2423 case R_390_GOT12:
2424 case R_390_GOT16:
2425 case R_390_GOT20:
2426 case R_390_GOT32:
2427 case R_390_GOTENT:
2428 {
2429 /* Write the PLT slot address into the GOT slot. */
2430 bfd_put_32 (output_bfd, relocation,
2431 htab->elf.sgot->contents +
2432 local_got_offsets[r_symndx]);
2433 relocation = (local_got_offsets[r_symndx] +
2434 htab->elf.sgot->output_offset);
2435
2436 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2437 relocation += htab->elf.sgot->output_section->vma;
2438 break;
2439 }
2440 default:
2441 break;
2442 }
2443 /* The output section is needed later in
2444 finish_dynamic_section when creating the dynamic
2445 relocation. */
2446 local_plt[r_symndx].sec = sec;
2447 goto do_relocation;
2448 }
2449 else
2450 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2451 }
2452 else
2453 {
2454 bfd_boolean warned ATTRIBUTE_UNUSED;
2455 bfd_boolean ignored ATTRIBUTE_UNUSED;
2456
2457 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2458 r_symndx, symtab_hdr, sym_hashes,
2459 h, sec, relocation,
2460 unresolved_reloc, warned, ignored);
2461 }
2462
2463 if (sec != NULL && discarded_section (sec))
2464 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2465 rel, 1, relend, howto, 0, contents);
2466
2467 if (bfd_link_relocatable (info))
2468 continue;
2469
2470 switch (r_type)
2471 {
2472 case R_390_GOTPLT12:
2473 case R_390_GOTPLT16:
2474 case R_390_GOTPLT20:
2475 case R_390_GOTPLT32:
2476 case R_390_GOTPLTENT:
2477 /* There are three cases for a GOTPLT relocation. 1) The
2478 relocation is against the jump slot entry of a plt that
2479 will get emitted to the output file. 2) The relocation
2480 is against the jump slot of a plt entry that has been
2481 removed. elf_s390_adjust_gotplt has created a GOT entry
2482 as replacement. 3) The relocation is against a local symbol.
2483 Cases 2) and 3) are the same as the GOT relocation code
2484 so we just have to test for case 1 and fall through for
2485 the other two. */
2486 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2487 {
2488 bfd_vma plt_index;
2489
2490 if (s390_is_ifunc_symbol_p (h))
2491 {
2492 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2493 relocation = (plt_index * GOT_ENTRY_SIZE +
2494 htab->elf.igotplt->output_offset);
2495 if (r_type == R_390_GOTPLTENT)
2496 relocation += htab->elf.igotplt->output_section->vma;
2497 }
2498 else
2499 {
2500 /* Calc. index no.
2501 Current offset - size first entry / entry size. */
2502 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2503 PLT_ENTRY_SIZE;
2504
2505 /* Offset in GOT is PLT index plus GOT headers(3)
2506 times 4, addr & GOT addr. */
2507 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2508 if (r_type == R_390_GOTPLTENT)
2509 relocation += htab->elf.sgot->output_section->vma;
2510 }
2511 unresolved_reloc = FALSE;
2512
2513 }
2514 /* Fall through. */
2515
2516 case R_390_GOT12:
2517 case R_390_GOT16:
2518 case R_390_GOT20:
2519 case R_390_GOT32:
2520 case R_390_GOTENT:
2521 /* Relocation is to the entry for this symbol in the global
2522 offset table. */
2523 if (base_got == NULL)
2524 abort ();
2525
2526 if (h != NULL)
2527 {
2528 bfd_boolean dyn;
2529
2530 off = h->got.offset;
2531 dyn = htab->elf.dynamic_sections_created;
2532
2533 if (s390_is_ifunc_symbol_p (h))
2534 {
2535 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2536 if (off == (bfd_vma)-1)
2537 {
2538 /* No explicit GOT usage so redirect to the
2539 got.iplt slot. */
2540 base_got = htab->elf.igotplt;
2541 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2542 }
2543 else
2544 {
2545 /* Explicit GOT slots must contain the address
2546 of the PLT slot. This will be handled in
2547 finish_dynamic_symbol. */
2548 }
2549 }
2550 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2551 bfd_link_pic (info),
2552 h)
2553 || (bfd_link_pic (info)
2554 && SYMBOL_REFERENCES_LOCAL (info, h))
2555 || (ELF_ST_VISIBILITY (h->other)
2556 && h->root.type == bfd_link_hash_undefweak))
2557
2558 {
2559 /* This is actually a static link, or it is a
2560 -Bsymbolic link and the symbol is defined
2561 locally, or the symbol was forced to be local
2562 because of a version file. We must initialize
2563 this entry in the global offset table. Since the
2564 offset must always be a multiple of 2, we use the
2565 least significant bit to record whether we have
2566 initialized it already.
2567
2568 When doing a dynamic link, we create a .rel.got
2569 relocation entry to initialize the value. This
2570 is done in the finish_dynamic_symbol routine. */
2571 if ((off & 1) != 0)
2572 off &= ~1;
2573 else
2574 {
2575 bfd_put_32 (output_bfd, relocation,
2576 base_got->contents + off);
2577 h->got.offset |= 1;
2578 }
2579
2580 if ((h->def_regular
2581 && bfd_link_pic (info)
2582 && SYMBOL_REFERENCES_LOCAL (info, h))
2583 /* lrl rx,sym@GOTENT -> larl rx, sym */
2584 && ((r_type == R_390_GOTENT
2585 && (bfd_get_16 (input_bfd,
2586 contents + rel->r_offset - 2)
2587 & 0xff0f) == 0xc40d)
2588 /* ly rx, sym@GOT(r12) -> larl rx, sym */
2589 || (r_type == R_390_GOT20
2590 && (bfd_get_32 (input_bfd,
2591 contents + rel->r_offset - 2)
2592 & 0xff00f000) == 0xe300c000
2593 && bfd_get_8 (input_bfd,
2594 contents + rel->r_offset + 3) == 0x58)))
2595 {
2596 unsigned short new_insn =
2597 (0xc000 | (bfd_get_8 (input_bfd,
2598 contents + rel->r_offset - 1) & 0xf0));
2599 bfd_put_16 (output_bfd, new_insn,
2600 contents + rel->r_offset - 2);
2601 r_type = R_390_PC32DBL;
2602 rel->r_addend = 2;
2603 howto = elf_howto_table + r_type;
2604 relocation = h->root.u.def.value
2605 + h->root.u.def.section->output_section->vma
2606 + h->root.u.def.section->output_offset;
2607 goto do_relocation;
2608 }
2609 }
2610 else
2611 unresolved_reloc = FALSE;
2612 }
2613 else
2614 {
2615 if (local_got_offsets == NULL)
2616 abort ();
2617
2618 off = local_got_offsets[r_symndx];
2619
2620 /* The offset must always be a multiple of 4. We use
2621 the least significant bit to record whether we have
2622 already generated the necessary reloc. */
2623 if ((off & 1) != 0)
2624 off &= ~1;
2625 else
2626 {
2627 bfd_put_32 (output_bfd, relocation,
2628 htab->elf.sgot->contents + off);
2629
2630 if (bfd_link_pic (info))
2631 {
2632 asection *srelgot;
2633 Elf_Internal_Rela outrel;
2634 bfd_byte *loc;
2635
2636 srelgot = htab->elf.srelgot;
2637 if (srelgot == NULL)
2638 abort ();
2639
2640 outrel.r_offset = (htab->elf.sgot->output_section->vma
2641 + htab->elf.sgot->output_offset
2642 + off);
2643 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2644 outrel.r_addend = relocation;
2645 loc = srelgot->contents;
2646 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
2647 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2648 }
2649
2650 local_got_offsets[r_symndx] |= 1;
2651 }
2652 }
2653
2654 if (off >= (bfd_vma) -2)
2655 abort ();
2656
2657 relocation = base_got->output_offset + off;
2658
2659 /* For @GOTENT the relocation is against the offset between
2660 the instruction and the symbols entry in the GOT and not
2661 between the start of the GOT and the symbols entry. We
2662 add the vma of the GOT to get the correct value. */
2663 if ( r_type == R_390_GOTENT
2664 || r_type == R_390_GOTPLTENT)
2665 relocation += base_got->output_section->vma;
2666
2667 break;
2668
2669 case R_390_GOTOFF16:
2670 case R_390_GOTOFF32:
2671 /* Relocation is relative to the start of the global offset
2672 table. */
2673
2674 if (h != NULL
2675 && s390_is_ifunc_symbol_p (h)
2676 && h->def_regular
2677 && !bfd_link_executable (info))
2678 {
2679 relocation = (htab->elf.iplt->output_section->vma
2680 + htab->elf.iplt->output_offset
2681 + h->plt.offset
2682 - htab->elf.sgot->output_section->vma);
2683 goto do_relocation;
2684 }
2685
2686 /* Note that sgot->output_offset is not involved in this
2687 calculation. We always want the start of .got. If we
2688 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2689 permitted by the ABI, we might have to change this
2690 calculation. */
2691 relocation -= htab->elf.sgot->output_section->vma;
2692 break;
2693
2694 case R_390_GOTPC:
2695 case R_390_GOTPCDBL:
2696 /* Use global offset table as symbol value. */
2697 relocation = htab->elf.sgot->output_section->vma;
2698 unresolved_reloc = FALSE;
2699 break;
2700
2701 case R_390_PLT12DBL:
2702 case R_390_PLT16DBL:
2703 case R_390_PLT24DBL:
2704 case R_390_PLT32DBL:
2705 case R_390_PLT32:
2706 /* Relocation is to the entry for this symbol in the
2707 procedure linkage table. */
2708
2709 /* Resolve a PLT32 reloc against a local symbol directly,
2710 without using the procedure linkage table. */
2711 if (h == NULL)
2712 break;
2713
2714 if (h->plt.offset == (bfd_vma) -1
2715 || (htab->elf.splt == NULL && htab->elf.iplt == NULL))
2716 {
2717 /* We didn't make a PLT entry for this symbol. This
2718 happens when statically linking PIC code, or when
2719 using -Bsymbolic. */
2720 break;
2721 }
2722
2723 if (s390_is_ifunc_symbol_p (h))
2724 relocation = (htab->elf.iplt->output_section->vma
2725 + htab->elf.iplt->output_offset
2726 + h->plt.offset);
2727 else
2728 relocation = (htab->elf.splt->output_section->vma
2729 + htab->elf.splt->output_offset
2730 + h->plt.offset);
2731 unresolved_reloc = FALSE;
2732 break;
2733
2734 case R_390_PLTOFF16:
2735 case R_390_PLTOFF32:
2736 /* Relocation is to the entry for this symbol in the
2737 procedure linkage table relative to the start of the GOT. */
2738
2739 /* For local symbols or if we didn't make a PLT entry for
2740 this symbol resolve the symbol directly. */
2741 if (h == NULL
2742 || h->plt.offset == (bfd_vma) -1
2743 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
2744 {
2745 relocation -= htab->elf.sgot->output_section->vma;
2746 break;
2747 }
2748
2749 if (s390_is_ifunc_symbol_p (h))
2750 relocation = (htab->elf.iplt->output_section->vma
2751 + htab->elf.iplt->output_offset
2752 + h->plt.offset
2753 - htab->elf.sgot->output_section->vma);
2754 else
2755 relocation = (htab->elf.splt->output_section->vma
2756 + htab->elf.splt->output_offset
2757 + h->plt.offset
2758 - htab->elf.sgot->output_section->vma);
2759 unresolved_reloc = FALSE;
2760 break;
2761
2762 case R_390_PC16:
2763 case R_390_PC12DBL:
2764 case R_390_PC16DBL:
2765 case R_390_PC24DBL:
2766 case R_390_PC32DBL:
2767 case R_390_PC32:
2768 if (h != NULL
2769 && s390_is_ifunc_symbol_p (h)
2770 && h->def_regular
2771 && !bfd_link_executable (info))
2772 {
2773 /* This will not work our if the function does not
2774 happen to set up the GOT pointer for some other
2775 reason. 31 bit PLT entries require r12 to hold the
2776 GOT pointer.
2777 FIXME: Implement an errorcheck.
2778 NOTE: It will work when brasl is not available
2779 (e.g. with -m31 -march=g5) since a local function
2780 call then does use GOTOFF which implies r12 being set
2781 up. */
2782 relocation = (htab->elf.iplt->output_section->vma
2783 + htab->elf.iplt->output_offset
2784 + h ->plt.offset);
2785 goto do_relocation;
2786 }
2787 /* Fall through. */
2788
2789 case R_390_8:
2790 case R_390_16:
2791 case R_390_32:
2792 if (h != NULL
2793 && s390_is_ifunc_symbol_p (h)
2794 && h->def_regular)
2795 {
2796 if (!bfd_link_pic (info) || !h->non_got_ref)
2797 {
2798 /* For a non-shared object STT_GNU_IFUNC symbol must
2799 go through PLT. */
2800 relocation = (htab->elf.iplt->output_section->vma
2801 + htab->elf.iplt->output_offset
2802 + h ->plt.offset);
2803 goto do_relocation;
2804 }
2805 else
2806 {
2807 /* For shared objects a runtime relocation is needed. */
2808
2809 Elf_Internal_Rela outrel;
2810 asection *sreloc;
2811
2812 /* Need a dynamic relocation to get the real function
2813 address. */
2814 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2815 info,
2816 input_section,
2817 rel->r_offset);
2818 if (outrel.r_offset == (bfd_vma) -1
2819 || outrel.r_offset == (bfd_vma) -2)
2820 abort ();
2821
2822 outrel.r_offset += (input_section->output_section->vma
2823 + input_section->output_offset);
2824
2825 if (h->dynindx == -1
2826 || h->forced_local
2827 || bfd_link_executable (info))
2828 {
2829 /* This symbol is resolved locally. */
2830 outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
2831 outrel.r_addend = (h->root.u.def.value
2832 + h->root.u.def.section->output_section->vma
2833 + h->root.u.def.section->output_offset);
2834 }
2835 else
2836 {
2837 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2838 outrel.r_addend = 0;
2839 }
2840
2841 sreloc = htab->elf.irelifunc;
2842 elf_append_rela (output_bfd, sreloc, &outrel);
2843
2844 /* If this reloc is against an external symbol, we
2845 do not want to fiddle with the addend. Otherwise,
2846 we need to include the symbol value so that it
2847 becomes an addend for the dynamic reloc. For an
2848 internal symbol, we have updated addend. */
2849 continue;
2850 }
2851 }
2852
2853 if ((input_section->flags & SEC_ALLOC) == 0)
2854 break;
2855
2856 if ((bfd_link_pic (info)
2857 && (h == NULL
2858 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2859 || h->root.type != bfd_link_hash_undefweak)
2860 && ((r_type != R_390_PC16
2861 && r_type != R_390_PC12DBL
2862 && r_type != R_390_PC16DBL
2863 && r_type != R_390_PC24DBL
2864 && r_type != R_390_PC32DBL
2865 && r_type != R_390_PC32)
2866 || !SYMBOL_CALLS_LOCAL (info, h)))
2867 || (ELIMINATE_COPY_RELOCS
2868 && !bfd_link_pic (info)
2869 && h != NULL
2870 && h->dynindx != -1
2871 && !h->non_got_ref
2872 && ((h->def_dynamic
2873 && !h->def_regular)
2874 || h->root.type == bfd_link_hash_undefweak
2875 || h->root.type == bfd_link_hash_undefined)))
2876 {
2877 Elf_Internal_Rela outrel;
2878 bfd_boolean skip, relocate;
2879 asection *sreloc;
2880 bfd_byte *loc;
2881
2882 /* When generating a shared object, these relocations
2883 are copied into the output file to be resolved at run
2884 time. */
2885
2886 skip = FALSE;
2887 relocate = FALSE;
2888
2889 outrel.r_offset =
2890 _bfd_elf_section_offset (output_bfd, info, input_section,
2891 rel->r_offset);
2892 if (outrel.r_offset == (bfd_vma) -1)
2893 skip = TRUE;
2894 else if (outrel.r_offset == (bfd_vma) -2)
2895 skip = TRUE, relocate = TRUE;
2896 outrel.r_offset += (input_section->output_section->vma
2897 + input_section->output_offset);
2898
2899 if (skip)
2900 memset (&outrel, 0, sizeof outrel);
2901 else if (h != NULL
2902 && h->dynindx != -1
2903 && (r_type == R_390_PC16
2904 || r_type == R_390_PC12DBL
2905 || r_type == R_390_PC16DBL
2906 || r_type == R_390_PC24DBL
2907 || r_type == R_390_PC32DBL
2908 || r_type == R_390_PC32
2909 || !bfd_link_pic (info)
2910 || !SYMBOLIC_BIND (info, h)
2911 || !h->def_regular))
2912 {
2913 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2914 outrel.r_addend = rel->r_addend;
2915 }
2916 else
2917 {
2918 /* This symbol is local, or marked to become local. */
2919 outrel.r_addend = relocation + rel->r_addend;
2920 if (r_type == R_390_32)
2921 {
2922 relocate = TRUE;
2923 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2924 }
2925 else
2926 {
2927 long sindx;
2928
2929 if (bfd_is_abs_section (sec))
2930 sindx = 0;
2931 else if (sec == NULL || sec->owner == NULL)
2932 {
2933 bfd_set_error(bfd_error_bad_value);
2934 return FALSE;
2935 }
2936 else
2937 {
2938 asection *osec;
2939
2940 osec = sec->output_section;
2941 sindx = elf_section_data (osec)->dynindx;
2942 if (sindx == 0)
2943 {
2944 osec = htab->elf.text_index_section;
2945 sindx = elf_section_data (osec)->dynindx;
2946 }
2947 BFD_ASSERT (sindx != 0);
2948
2949 /* We are turning this relocation into one
2950 against a section symbol, so subtract out
2951 the output section's address but not the
2952 offset of the input section in the output
2953 section. */
2954 outrel.r_addend -= osec->vma;
2955 }
2956 outrel.r_info = ELF32_R_INFO (sindx, r_type);
2957 }
2958 }
2959
2960 sreloc = elf_section_data (input_section)->sreloc;
2961 if (sreloc == NULL)
2962 abort ();
2963
2964 loc = sreloc->contents;
2965 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2966 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2967
2968 /* If this reloc is against an external symbol, we do
2969 not want to fiddle with the addend. Otherwise, we
2970 need to include the symbol value so that it becomes
2971 an addend for the dynamic reloc. */
2972 if (! relocate)
2973 continue;
2974 }
2975 break;
2976
2977 /* Relocations for tls literal pool entries. */
2978 case R_390_TLS_IE32:
2979 if (bfd_link_pic (info))
2980 {
2981 Elf_Internal_Rela outrel;
2982 asection *sreloc;
2983 bfd_byte *loc;
2984
2985 outrel.r_offset = rel->r_offset
2986 + input_section->output_section->vma
2987 + input_section->output_offset;
2988 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2989 sreloc = elf_section_data (input_section)->sreloc;
2990 if (sreloc == NULL)
2991 abort ();
2992 loc = sreloc->contents;
2993 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2994 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2995 }
2996 /* Fall through. */
2997
2998 case R_390_TLS_GD32:
2999 case R_390_TLS_GOTIE32:
3000 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
3001 tls_type = GOT_UNKNOWN;
3002 if (h == NULL && local_got_offsets)
3003 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3004 else if (h != NULL)
3005 {
3006 tls_type = elf_s390_hash_entry(h)->tls_type;
3007 if (!bfd_link_pic (info)
3008 && h->dynindx == -1
3009 && tls_type >= GOT_TLS_IE)
3010 r_type = R_390_TLS_LE32;
3011 }
3012 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
3013 r_type = R_390_TLS_IE32;
3014
3015 if (r_type == R_390_TLS_LE32)
3016 {
3017 /* This relocation gets optimized away by the local exec
3018 access optimization. */
3019 BFD_ASSERT (! unresolved_reloc);
3020 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3021 contents + rel->r_offset);
3022 continue;
3023 }
3024
3025 if (htab->elf.sgot == NULL)
3026 abort ();
3027
3028 if (h != NULL)
3029 off = h->got.offset;
3030 else
3031 {
3032 if (local_got_offsets == NULL)
3033 abort ();
3034
3035 off = local_got_offsets[r_symndx];
3036 }
3037
3038 emit_tls_relocs:
3039
3040 if ((off & 1) != 0)
3041 off &= ~1;
3042 else
3043 {
3044 Elf_Internal_Rela outrel;
3045 bfd_byte *loc;
3046 int dr_type, indx;
3047
3048 if (htab->elf.srelgot == NULL)
3049 abort ();
3050
3051 outrel.r_offset = (htab->elf.sgot->output_section->vma
3052 + htab->elf.sgot->output_offset + off);
3053
3054 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3055 if (r_type == R_390_TLS_GD32)
3056 dr_type = R_390_TLS_DTPMOD;
3057 else
3058 dr_type = R_390_TLS_TPOFF;
3059 if (dr_type == R_390_TLS_TPOFF && indx == 0)
3060 outrel.r_addend = relocation - dtpoff_base (info);
3061 else
3062 outrel.r_addend = 0;
3063 outrel.r_info = ELF32_R_INFO (indx, dr_type);
3064 loc = htab->elf.srelgot->contents;
3065 loc += htab->elf.srelgot->reloc_count++
3066 * sizeof (Elf32_External_Rela);
3067 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3068
3069 if (r_type == R_390_TLS_GD32)
3070 {
3071 if (indx == 0)
3072 {
3073 BFD_ASSERT (! unresolved_reloc);
3074 bfd_put_32 (output_bfd,
3075 relocation - dtpoff_base (info),
3076 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3077 }
3078 else
3079 {
3080 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
3081 outrel.r_offset += GOT_ENTRY_SIZE;
3082 outrel.r_addend = 0;
3083 htab->elf.srelgot->reloc_count++;
3084 loc += sizeof (Elf32_External_Rela);
3085 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3086 }
3087 }
3088
3089 if (h != NULL)
3090 h->got.offset |= 1;
3091 else
3092 local_got_offsets[r_symndx] |= 1;
3093 }
3094
3095 if (off >= (bfd_vma) -2)
3096 abort ();
3097 if (r_type == ELF32_R_TYPE (rel->r_info))
3098 {
3099 relocation = htab->elf.sgot->output_offset + off;
3100 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
3101 relocation += htab->elf.sgot->output_section->vma;
3102 unresolved_reloc = FALSE;
3103 }
3104 else
3105 {
3106 bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off,
3107 contents + rel->r_offset);
3108 continue;
3109 }
3110 break;
3111
3112 case R_390_TLS_GOTIE12:
3113 case R_390_TLS_GOTIE20:
3114 case R_390_TLS_IEENT:
3115 if (h == NULL)
3116 {
3117 if (local_got_offsets == NULL)
3118 abort();
3119 off = local_got_offsets[r_symndx];
3120 if (bfd_link_pic (info))
3121 goto emit_tls_relocs;
3122 }
3123 else
3124 {
3125 off = h->got.offset;
3126 tls_type = elf_s390_hash_entry(h)->tls_type;
3127 if (bfd_link_pic (info)
3128 || h->dynindx != -1
3129 || tls_type < GOT_TLS_IE)
3130 goto emit_tls_relocs;
3131 }
3132
3133 if (htab->elf.sgot == NULL)
3134 abort ();
3135
3136 BFD_ASSERT (! unresolved_reloc);
3137 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3138 htab->elf.sgot->contents + off);
3139 relocation = htab->elf.sgot->output_offset + off;
3140 if (r_type == R_390_TLS_IEENT)
3141 relocation += htab->elf.sgot->output_section->vma;
3142 unresolved_reloc = FALSE;
3143 break;
3144
3145 case R_390_TLS_LDM32:
3146 if (! bfd_link_pic (info))
3147 /* The literal pool entry this relocation refers to gets ignored
3148 by the optimized code of the local exec model. Do nothing
3149 and the value will turn out zero. */
3150 continue;
3151
3152 if (htab->elf.sgot == NULL)
3153 abort ();
3154
3155 off = htab->tls_ldm_got.offset;
3156 if (off & 1)
3157 off &= ~1;
3158 else
3159 {
3160 Elf_Internal_Rela outrel;
3161 bfd_byte *loc;
3162
3163 if (htab->elf.srelgot == NULL)
3164 abort ();
3165
3166 outrel.r_offset = (htab->elf.sgot->output_section->vma
3167 + htab->elf.sgot->output_offset + off);
3168
3169 bfd_put_32 (output_bfd, 0,
3170 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3171 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
3172 outrel.r_addend = 0;
3173 loc = htab->elf.srelgot->contents;
3174 loc += htab->elf.srelgot->reloc_count++
3175 * sizeof (Elf32_External_Rela);
3176 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3177 htab->tls_ldm_got.offset |= 1;
3178 }
3179 relocation = htab->elf.sgot->output_offset + off;
3180 unresolved_reloc = FALSE;
3181 break;
3182
3183 case R_390_TLS_LE32:
3184 if (bfd_link_dll (info))
3185 {
3186 /* Linking a shared library with non-fpic code requires
3187 a R_390_TLS_TPOFF relocation. */
3188 Elf_Internal_Rela outrel;
3189 asection *sreloc;
3190 bfd_byte *loc;
3191 int indx;
3192
3193 outrel.r_offset = rel->r_offset
3194 + input_section->output_section->vma
3195 + input_section->output_offset;
3196 if (h != NULL && h->dynindx != -1)
3197 indx = h->dynindx;
3198 else
3199 indx = 0;
3200 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
3201 if (indx == 0)
3202 outrel.r_addend = relocation - dtpoff_base (info);
3203 else
3204 outrel.r_addend = 0;
3205 sreloc = elf_section_data (input_section)->sreloc;
3206 if (sreloc == NULL)
3207 abort ();
3208 loc = sreloc->contents;
3209 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3210 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3211 }
3212 else
3213 {
3214 BFD_ASSERT (! unresolved_reloc);
3215 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3216 contents + rel->r_offset);
3217 }
3218 continue;
3219
3220 case R_390_TLS_LDO32:
3221 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
3222 relocation -= dtpoff_base (info);
3223 else
3224 /* When converting LDO to LE, we must negate. */
3225 relocation = -tpoff (info, relocation);
3226 break;
3227
3228 /* Relocations for tls instructions. */
3229 case R_390_TLS_LOAD:
3230 case R_390_TLS_GDCALL:
3231 case R_390_TLS_LDCALL:
3232 tls_type = GOT_UNKNOWN;
3233 if (h == NULL && local_got_offsets)
3234 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3235 else if (h != NULL)
3236 tls_type = elf_s390_hash_entry(h)->tls_type;
3237
3238 if (tls_type == GOT_TLS_GD)
3239 continue;
3240
3241 if (r_type == R_390_TLS_LOAD)
3242 {
3243 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3244 {
3245 /* IE->LE transition. Four valid cases:
3246 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
3247 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
3248 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
3249 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3250 unsigned int insn, ry;
3251
3252 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3253 ry = 0;
3254 if ((insn & 0xff00f000) == 0x58000000)
3255 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
3256 ry = (insn & 0x000f0000);
3257 else if ((insn & 0xff0f0000) == 0x58000000)
3258 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
3259 ry = (insn & 0x0000f000) << 4;
3260 else if ((insn & 0xff00f000) == 0x5800c000)
3261 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
3262 ry = (insn & 0x000f0000);
3263 else if ((insn & 0xff0f0000) == 0x580c0000)
3264 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3265 ry = (insn & 0x0000f000) << 4;
3266 else
3267 invalid_tls_insn (input_bfd, input_section, rel);
3268 insn = 0x18000700 | (insn & 0x00f00000) | ry;
3269 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3270 }
3271 }
3272 else if (r_type == R_390_TLS_GDCALL)
3273 {
3274 unsigned int insn;
3275
3276 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3277 if ((insn & 0xff000fff) != 0x4d000000 &&
3278 (insn & 0xffff0000) != 0xc0e50000 &&
3279 (insn & 0xff000000) != 0x0d000000)
3280 invalid_tls_insn (input_bfd, input_section, rel);
3281 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3282 {
3283 if ((insn & 0xff000000) == 0x0d000000)
3284 {
3285 /* GD->LE transition.
3286 basr rx, ry -> nopr r7 */
3287 insn = 0x07070000 | (insn & 0xffff);
3288 }
3289 else if ((insn & 0xff000000) == 0x4d000000)
3290 {
3291 /* GD->LE transition.
3292 bas %r14,0(%rx,%r13) -> bc 0,0 */
3293 insn = 0x47000000;
3294 }
3295 else
3296 {
3297 /* GD->LE transition.
3298 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
3299 insn = 0xc0040000;
3300 bfd_put_16 (output_bfd, 0x0000,
3301 contents + rel->r_offset + 4);
3302 }
3303 }
3304 else
3305 {
3306 /* If basr is used in the pic case to invoke
3307 _tls_get_offset, something went wrong before. */
3308 if ((insn & 0xff000000) == 0x0d000000)
3309 invalid_tls_insn (input_bfd, input_section, rel);
3310
3311 if ((insn & 0xff000000) == 0x4d000000)
3312 {
3313 /* GD->IE transition.
3314 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3315 insn = 0x5822c000;
3316 }
3317 else
3318 {
3319 /* GD->IE transition.
3320 brasl %r14,__tls_get_addr@plt ->
3321 l %r2,0(%r2,%r12) ; bcr 0,0 */
3322 insn = 0x5822c000;
3323 bfd_put_16 (output_bfd, 0x0700,
3324 contents + rel->r_offset + 4);
3325 }
3326 }
3327 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3328 }
3329 else if (r_type == R_390_TLS_LDCALL)
3330 {
3331 if (!bfd_link_pic (info))
3332 {
3333 unsigned int insn;
3334
3335 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3336 if ((insn & 0xff000fff) != 0x4d000000 &&
3337 (insn & 0xffff0000) != 0xc0e50000 &&
3338 (insn & 0xff000000) != 0x0d000000)
3339 invalid_tls_insn (input_bfd, input_section, rel);
3340
3341 if ((insn & 0xff000000) == 0x0d000000)
3342 {
3343 /* LD->LE transition.
3344 basr rx, ry -> nopr r7 */
3345 insn = 0x07070000 | (insn & 0xffff);
3346 }
3347 else if ((insn & 0xff000000) == 0x4d000000)
3348 {
3349 /* LD->LE transition.
3350 bas %r14,0(%rx,%r13) -> bc 0,0 */
3351 insn = 0x47000000;
3352 }
3353 else
3354 {
3355 /* LD->LE transition.
3356 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
3357 insn = 0xc0040000;
3358 bfd_put_16 (output_bfd, 0x0000,
3359 contents + rel->r_offset + 4);
3360 }
3361 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3362 }
3363 }
3364 continue;
3365
3366 default:
3367 break;
3368 }
3369
3370 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3371 because such sections are not SEC_ALLOC and thus ld.so will
3372 not process them. */
3373 if (unresolved_reloc
3374 && !((input_section->flags & SEC_DEBUGGING) != 0
3375 && h->def_dynamic)
3376 && _bfd_elf_section_offset (output_bfd, info, input_section,
3377 rel->r_offset) != (bfd_vma) -1)
3378 _bfd_error_handler
3379 /* xgettext:c-format */
3380 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3381 input_bfd,
3382 input_section,
3383 (long) rel->r_offset,
3384 howto->name,
3385 h->root.root.string);
3386
3387 do_relocation:
3388
3389 /* When applying a 24 bit reloc we need to start one byte
3390 earlier. Otherwise the 32 bit get/put bfd operations might
3391 access a byte after the actual section. */
3392 if (r_type == R_390_PC24DBL
3393 || r_type == R_390_PLT24DBL)
3394 rel->r_offset--;
3395
3396 if (r_type == R_390_20
3397 || r_type == R_390_GOT20
3398 || r_type == R_390_GOTPLT20
3399 || r_type == R_390_TLS_GOTIE20)
3400 {
3401 relocation += rel->r_addend;
3402 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3403 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3404 contents, rel->r_offset,
3405 relocation, 0);
3406 }
3407 else
3408 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3409 contents, rel->r_offset,
3410 relocation, rel->r_addend);
3411
3412 if (r != bfd_reloc_ok)
3413 {
3414 const char *name;
3415
3416 if (h != NULL)
3417 name = h->root.root.string;
3418 else
3419 {
3420 name = bfd_elf_string_from_elf_section (input_bfd,
3421 symtab_hdr->sh_link,
3422 sym->st_name);
3423 if (name == NULL)
3424 return FALSE;
3425 if (*name == '\0')
3426 name = bfd_section_name (input_bfd, sec);
3427 }
3428
3429 if (r == bfd_reloc_overflow)
3430 (*info->callbacks->reloc_overflow)
3431 (info, (h ? &h->root : NULL), name, howto->name,
3432 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3433 else
3434 {
3435 _bfd_error_handler
3436 /* xgettext:c-format */
3437 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3438 input_bfd, input_section,
3439 (long) rel->r_offset, name, (int) r);
3440 return FALSE;
3441 }
3442 }
3443 }
3444
3445 return TRUE;
3446 }
3447
3448 /* Generate the PLT slots together with the dynamic relocations needed
3449 for IFUNC symbols. */
3450
3451 static void
3452 elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3453 struct bfd_link_info *info,
3454 struct elf_link_hash_entry *h,
3455 struct elf_s390_link_hash_table *htab,
3456 bfd_vma iplt_offset,
3457 bfd_vma resolver_address)
3458 {
3459 bfd_vma iplt_index;
3460 bfd_vma got_offset;
3461 bfd_vma igotiplt_offset;
3462 Elf_Internal_Rela rela;
3463 bfd_byte *loc;
3464 asection *plt, *gotplt, *relplt;
3465 bfd_vma relative_offset;
3466
3467 if (htab->elf.iplt == NULL
3468 || htab->elf.igotplt == NULL
3469 || htab->elf.irelplt == NULL)
3470 abort ();
3471
3472 gotplt = htab->elf.igotplt;
3473 relplt = htab->elf.irelplt;
3474
3475 /* Index of the PLT slot within iplt section. */
3476 iplt_index = iplt_offset / PLT_ENTRY_SIZE;
3477 plt = htab->elf.iplt;
3478 /* Offset into the igot.plt section. */
3479 igotiplt_offset = iplt_index * GOT_ENTRY_SIZE;
3480 /* Offset into the got section. */
3481 got_offset = igotiplt_offset + gotplt->output_offset;
3482
3483 /* S390 uses halfwords for relative branch calc! */
3484 relative_offset = - (plt->output_offset +
3485 (PLT_ENTRY_SIZE * iplt_index) + 18) / 2;
3486 /* If offset is > 32768, branch to a previous branch
3487 390 can only handle +-64 K jumps. */
3488 if ( -32768 > (int) relative_offset )
3489 relative_offset
3490 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3491
3492 /* Fill in the entry in the procedure linkage table. */
3493 if (!bfd_link_pic (info))
3494 {
3495 memcpy (plt->contents + iplt_offset, elf_s390_plt_entry,
3496 PLT_ENTRY_SIZE);
3497
3498 /* Adjust jump to the first plt entry. */
3499 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3500 plt->contents + iplt_offset + 20);
3501
3502 /* Push the GOT offset field. */
3503 bfd_put_32 (output_bfd,
3504 (gotplt->output_section->vma
3505 + got_offset),
3506 plt->contents + iplt_offset + 24);
3507 }
3508 else if (got_offset < 4096)
3509 {
3510 /* The GOT offset is small enough to be used directly as
3511 displacement. */
3512 memcpy (plt->contents + iplt_offset,
3513 elf_s390_plt_pic12_entry,
3514 PLT_ENTRY_SIZE);
3515
3516 /* Put in the GOT offset as displacement value. The 0xc000
3517 value comes from the first word of the plt entry. Look
3518 at the elf_s390_plt_pic16_entry content. */
3519 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3520 plt->contents + iplt_offset + 2);
3521
3522 /* Adjust the jump to the first plt entry. */
3523 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3524 plt->contents + iplt_offset + 20);
3525 }
3526 else if (got_offset < 32768)
3527 {
3528 /* The GOT offset is too big for a displacement but small
3529 enough to be a signed 16 bit immediate value as it can be
3530 used in an lhi instruction. */
3531 memcpy (plt->contents + iplt_offset,
3532 elf_s390_plt_pic16_entry,
3533 PLT_ENTRY_SIZE);
3534
3535 /* Put in the GOT offset for the lhi instruction. */
3536 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3537 plt->contents + iplt_offset + 2);
3538
3539 /* Adjust the jump to the first plt entry. */
3540 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3541 plt->contents + iplt_offset + 20);
3542 }
3543 else
3544 {
3545 memcpy (plt->contents + iplt_offset,
3546 elf_s390_plt_pic_entry,
3547 PLT_ENTRY_SIZE);
3548
3549 /* Adjust the jump to the first plt entry. */
3550 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3551 plt->contents + iplt_offset + 20);
3552
3553 /* Push the GOT offset field. */
3554 bfd_put_32 (output_bfd, got_offset,
3555 plt->contents + iplt_offset + 24);
3556 }
3557 /* Insert offset into reloc. table here. */
3558 bfd_put_32 (output_bfd, relplt->output_offset +
3559 iplt_index * RELA_ENTRY_SIZE,
3560 plt->contents + iplt_offset + 28);
3561
3562 /* Fill in the entry in the global offset table.
3563 Points to instruction after GOT offset. */
3564 bfd_put_32 (output_bfd,
3565 (plt->output_section->vma
3566 + plt->output_offset
3567 + iplt_offset
3568 + 12),
3569 gotplt->contents + igotiplt_offset);
3570
3571 /* Fill in the entry in the .rela.plt section. */
3572 rela.r_offset = gotplt->output_section->vma + got_offset;
3573
3574 if (!h
3575 || h->dynindx == -1
3576 || ((bfd_link_executable (info)
3577 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3578 && h->def_regular))
3579 {
3580 /* The symbol can be locally resolved. */
3581 rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
3582 rela.r_addend = resolver_address;
3583 }
3584 else
3585 {
3586 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3587 rela.r_addend = 0;
3588 }
3589
3590 loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE;
3591 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3592 }
3593
3594 /* Finish up dynamic symbol handling. We set the contents of various
3595 dynamic sections here. */
3596
3597 static bfd_boolean
3598 elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3599 struct bfd_link_info *info,
3600 struct elf_link_hash_entry *h,
3601 Elf_Internal_Sym *sym)
3602 {
3603 struct elf_s390_link_hash_table *htab;
3604 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
3605
3606 htab = elf_s390_hash_table (info);
3607
3608 if (h->plt.offset != (bfd_vma) -1)
3609 {
3610 bfd_vma plt_index;
3611 bfd_vma got_offset;
3612 Elf_Internal_Rela rela;
3613 bfd_byte *loc;
3614 bfd_vma relative_offset;
3615
3616 /* This symbol has an entry in the procedure linkage table. Set
3617 it up. */
3618 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
3619 {
3620 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3621 htab, h->plt.offset,
3622 eh->ifunc_resolver_address +
3623 eh->ifunc_resolver_section->output_offset +
3624 eh->ifunc_resolver_section->output_section->vma);
3625 /* Do not return yet. Handling of explicit GOT slots of
3626 IFUNC symbols is below. */
3627 }
3628 else
3629 {
3630 if (h->dynindx == -1
3631 || htab->elf.splt == NULL
3632 || htab->elf.sgotplt == NULL
3633 || htab->elf.srelplt == NULL)
3634 abort ();
3635
3636 /* Calc. index no.
3637 Current offset - size first entry / entry size. */
3638 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3639
3640 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3641 addr & GOT addr. */
3642 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3643
3644 /* S390 uses halfwords for relative branch calc! */
3645 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3646 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3647 /* If offset is > 32768, branch to a previous branch
3648 390 can only handle +-64 K jumps. */
3649 if ( -32768 > (int) relative_offset )
3650 relative_offset
3651 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3652
3653 /* Fill in the entry in the procedure linkage table. */
3654 if (!bfd_link_pic (info))
3655 {
3656 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry,
3657 PLT_ENTRY_SIZE);
3658
3659 /* Adjust jump to the first plt entry. */
3660 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3661 htab->elf.splt->contents + h->plt.offset + 20);
3662
3663 /* Push the GOT offset field. */
3664 bfd_put_32 (output_bfd,
3665 (htab->elf.sgotplt->output_section->vma
3666 + htab->elf.sgotplt->output_offset
3667 + got_offset),
3668 htab->elf.splt->contents + h->plt.offset + 24);
3669 }
3670 else if (got_offset < 4096)
3671 {
3672 /* The GOT offset is small enough to be used directly as
3673 displacement. */
3674 memcpy (htab->elf.splt->contents + h->plt.offset,
3675 elf_s390_plt_pic12_entry,
3676 PLT_ENTRY_SIZE);
3677
3678 /* Put in the GOT offset as displacement value. The 0xc000
3679 value comes from the first word of the plt entry. Look
3680 at the elf_s390_plt_pic12_entry content. */
3681 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3682 htab->elf.splt->contents + h->plt.offset + 2);
3683
3684 /* Adjust the jump to the first plt entry. */
3685 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3686 htab->elf.splt->contents + h->plt.offset + 20);
3687 }
3688 else if (got_offset < 32768)
3689 {
3690 /* The GOT offset is too big for a displacement but small
3691 enough to be a signed 16 bit immediate value as it can be
3692 used in an lhi instruction. */
3693 memcpy (htab->elf.splt->contents + h->plt.offset,
3694 elf_s390_plt_pic16_entry,
3695 PLT_ENTRY_SIZE);
3696
3697 /* Put in the GOT offset for the lhi instruction. */
3698 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3699 htab->elf.splt->contents + h->plt.offset + 2);
3700
3701 /* Adjust the jump to the first plt entry. */
3702 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3703 htab->elf.splt->contents + h->plt.offset + 20);
3704 }
3705 else
3706 {
3707 memcpy (htab->elf.splt->contents + h->plt.offset,
3708 elf_s390_plt_pic_entry,
3709 PLT_ENTRY_SIZE);
3710
3711 /* Adjust the jump to the first plt entry. */
3712 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3713 htab->elf.splt->contents + h->plt.offset + 20);
3714
3715 /* Push the GOT offset field. */
3716 bfd_put_32 (output_bfd, got_offset,
3717 htab->elf.splt->contents + h->plt.offset + 24);
3718 }
3719 /* Insert offset into reloc. table here. */
3720 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3721 htab->elf.splt->contents + h->plt.offset + 28);
3722
3723 /* Fill in the entry in the global offset table.
3724 Points to instruction after GOT offset. */
3725 bfd_put_32 (output_bfd,
3726 (htab->elf.splt->output_section->vma
3727 + htab->elf.splt->output_offset
3728 + h->plt.offset
3729 + 12),
3730 htab->elf.sgotplt->contents + got_offset);
3731
3732 /* Fill in the entry in the .rela.plt section. */
3733 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3734 + htab->elf.sgotplt->output_offset
3735 + got_offset);
3736 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3737 rela.r_addend = 0;
3738 loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3739 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3740
3741 if (!h->def_regular)
3742 {
3743 /* Mark the symbol as undefined, rather than as defined in
3744 the .plt section. Leave the value alone. This is a clue
3745 for the dynamic linker, to make function pointer
3746 comparisons work between an application and shared
3747 library. */
3748 sym->st_shndx = SHN_UNDEF;
3749 }
3750 }
3751 }
3752
3753 if (h->got.offset != (bfd_vma) -1
3754 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3755 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3756 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3757 {
3758 Elf_Internal_Rela rela;
3759 bfd_byte *loc;
3760
3761 /* This symbol has an entry in the global offset table. Set it
3762 up. */
3763
3764 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
3765 abort ();
3766
3767 rela.r_offset = (htab->elf.sgot->output_section->vma
3768 + htab->elf.sgot->output_offset
3769 + (h->got.offset &~ (bfd_vma) 1));
3770
3771 /* If this is a static link, or it is a -Bsymbolic link and the
3772 symbol is defined locally or was forced to be local because
3773 of a version file, we just want to emit a RELATIVE reloc.
3774 The entry in the global offset table will already have been
3775 initialized in the relocate_section function. */
3776 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3777 {
3778 if (bfd_link_pic (info))
3779 {
3780 /* An explicit GOT slot usage needs GLOB_DAT. If the
3781 symbol references local the implicit got.iplt slot
3782 will be used and the IRELATIVE reloc has been created
3783 above. */
3784 goto do_glob_dat;
3785 }
3786 else
3787 {
3788 /* For non-shared objects explicit GOT slots must be
3789 filled with the PLT slot address for pointer
3790 equality reasons. */
3791 bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma
3792 + htab->elf.iplt->output_offset
3793 + h->plt.offset),
3794 htab->elf.sgot->contents + h->got.offset);
3795 return TRUE;
3796 }
3797 }
3798 else if (bfd_link_pic (info)
3799 && SYMBOL_REFERENCES_LOCAL (info, h))
3800 {
3801 /* If this is a static link, or it is a -Bsymbolic link and
3802 the symbol is defined locally or was forced to be local
3803 because of a version file, we just want to emit a
3804 RELATIVE reloc. The entry in the global offset table
3805 will already have been initialized in the
3806 relocate_section function. */
3807 if (!h->def_regular)
3808 return FALSE;
3809 BFD_ASSERT((h->got.offset & 1) != 0);
3810 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3811 rela.r_addend = (h->root.u.def.value
3812 + h->root.u.def.section->output_section->vma
3813 + h->root.u.def.section->output_offset);
3814 }
3815 else
3816 {
3817 BFD_ASSERT((h->got.offset & 1) == 0);
3818 do_glob_dat:
3819 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
3820 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
3821 rela.r_addend = 0;
3822 }
3823
3824 loc = htab->elf.srelgot->contents;
3825 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3826 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3827 }
3828
3829 if (h->needs_copy)
3830 {
3831 Elf_Internal_Rela rela;
3832 bfd_byte *loc;
3833
3834 /* This symbols needs a copy reloc. Set it up. */
3835
3836 if (h->dynindx == -1
3837 || (h->root.type != bfd_link_hash_defined
3838 && h->root.type != bfd_link_hash_defweak)
3839 || htab->srelbss == NULL)
3840 abort ();
3841
3842 rela.r_offset = (h->root.u.def.value
3843 + h->root.u.def.section->output_section->vma
3844 + h->root.u.def.section->output_offset);
3845 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3846 rela.r_addend = 0;
3847 loc = htab->srelbss->contents;
3848 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela);
3849 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3850 }
3851
3852 /* Mark some specially defined symbols as absolute. */
3853 if (h == htab->elf.hdynamic
3854 || h == htab->elf.hgot
3855 || h == htab->elf.hplt)
3856 sym->st_shndx = SHN_ABS;
3857
3858 return TRUE;
3859 }
3860
3861 /* Used to decide how to sort relocs in an optimal manner for the
3862 dynamic linker, before writing them out. */
3863
3864 static enum elf_reloc_type_class
3865 elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3866 const asection *rel_sec ATTRIBUTE_UNUSED,
3867 const Elf_Internal_Rela *rela)
3868 {
3869 bfd *abfd = info->output_bfd;
3870 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3871 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3872 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
3873 Elf_Internal_Sym sym;
3874
3875 if (htab->elf.dynsym == NULL
3876 || !bed->s->swap_symbol_in (abfd,
3877 (htab->elf.dynsym->contents
3878 + r_symndx * bed->s->sizeof_sym),
3879 0, &sym))
3880 abort ();
3881
3882 /* Check relocation against STT_GNU_IFUNC symbol. */
3883 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3884 return reloc_class_ifunc;
3885
3886 switch ((int) ELF32_R_TYPE (rela->r_info))
3887 {
3888 case R_390_RELATIVE:
3889 return reloc_class_relative;
3890 case R_390_JMP_SLOT:
3891 return reloc_class_plt;
3892 case R_390_COPY:
3893 return reloc_class_copy;
3894 default:
3895 return reloc_class_normal;
3896 }
3897 }
3898
3899 /* Finish up the dynamic sections. */
3900
3901 static bfd_boolean
3902 elf_s390_finish_dynamic_sections (bfd *output_bfd,
3903 struct bfd_link_info *info)
3904 {
3905 struct elf_s390_link_hash_table *htab;
3906 bfd *dynobj;
3907 asection *sdyn;
3908 bfd *ibfd;
3909 unsigned int i;
3910
3911 htab = elf_s390_hash_table (info);
3912 dynobj = htab->elf.dynobj;
3913 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3914
3915 if (htab->elf.dynamic_sections_created)
3916 {
3917 Elf32_External_Dyn *dyncon, *dynconend;
3918
3919 if (sdyn == NULL || htab->elf.sgot == NULL)
3920 abort ();
3921
3922 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3923 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3924 for (; dyncon < dynconend; dyncon++)
3925 {
3926 Elf_Internal_Dyn dyn;
3927 asection *s;
3928
3929 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3930
3931 switch (dyn.d_tag)
3932 {
3933 default:
3934 continue;
3935
3936 case DT_PLTGOT:
3937 s = htab->elf.sgotplt;
3938 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3939 break;
3940
3941 case DT_JMPREL:
3942 s = htab->elf.srelplt;
3943 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3944 break;
3945
3946 case DT_PLTRELSZ:
3947 dyn.d_un.d_val = htab->elf.srelplt->size + htab->elf.irelplt->size;
3948 break;
3949 }
3950
3951 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3952 }
3953
3954 /* Fill in the special first entry in the procedure linkage table. */
3955 if (htab->elf.splt && htab->elf.splt->size > 0)
3956 {
3957 memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
3958 if (bfd_link_pic (info))
3959 {
3960 memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry,
3961 PLT_FIRST_ENTRY_SIZE);
3962 }
3963 else
3964 {
3965 memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry,
3966 PLT_FIRST_ENTRY_SIZE);
3967 bfd_put_32 (output_bfd,
3968 htab->elf.sgotplt->output_section->vma
3969 + htab->elf.sgotplt->output_offset,
3970 htab->elf.splt->contents + 24);
3971 }
3972 elf_section_data (htab->elf.splt->output_section)
3973 ->this_hdr.sh_entsize = 4;
3974 }
3975
3976 }
3977
3978 if (htab->elf.sgotplt)
3979 {
3980 /* Fill in the first three entries in the global offset table. */
3981 if (htab->elf.sgotplt->size > 0)
3982 {
3983 bfd_put_32 (output_bfd,
3984 (sdyn == NULL ? (bfd_vma) 0
3985 : sdyn->output_section->vma + sdyn->output_offset),
3986 htab->elf.sgotplt->contents);
3987 /* One entry for shared object struct ptr. */
3988 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4);
3989 /* One entry for _dl_runtime_resolve. */
3990 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
3991 }
3992
3993 elf_section_data (htab->elf.sgotplt->output_section)
3994 ->this_hdr.sh_entsize = 4;
3995 }
3996 /* Finish dynamic symbol for local IFUNC symbols. */
3997 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
3998 {
3999 struct plt_entry *local_plt;
4000 Elf_Internal_Sym *isym;
4001 Elf_Internal_Shdr *symtab_hdr;
4002
4003 symtab_hdr = &elf_symtab_hdr (ibfd);
4004
4005 local_plt = elf_s390_local_plt (ibfd);
4006 if (local_plt != NULL)
4007 for (i = 0; i < symtab_hdr->sh_info; i++)
4008 {
4009 if (local_plt[i].plt.offset != (bfd_vma) -1)
4010 {
4011 asection *sec = local_plt[i].sec;
4012 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
4013 if (isym == NULL)
4014 return FALSE;
4015
4016 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4017 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
4018 local_plt[i].plt.offset,
4019 isym->st_value
4020 + sec->output_section->vma
4021 + sec->output_offset);
4022
4023 }
4024 }
4025 }
4026 return TRUE;
4027 }
4028 \f
4029 /* Support for core dump NOTE sections. */
4030
4031 static bfd_boolean
4032 elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note)
4033 {
4034 int offset;
4035 unsigned int size;
4036
4037 switch (note->descsz)
4038 {
4039 default:
4040 return FALSE;
4041
4042 case 224: /* S/390 Linux. */
4043 /* pr_cursig */
4044 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
4045
4046 /* pr_pid */
4047 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
4048
4049 /* pr_reg */
4050 offset = 72;
4051 size = 144;
4052 break;
4053 }
4054
4055 /* Make a ".reg/999" section. */
4056 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
4057 size, note->descpos + offset);
4058 }
4059
4060 static bfd_boolean
4061 elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
4062 {
4063 switch (note->descsz)
4064 {
4065 default:
4066 return FALSE;
4067
4068 case 124: /* sizeof(struct elf_prpsinfo) on s390 */
4069 elf_tdata (abfd)->core->pid
4070 = bfd_get_32 (abfd, note->descdata + 12);
4071 elf_tdata (abfd)->core->program
4072 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
4073 elf_tdata (abfd)->core->command
4074 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
4075 break;
4076 }
4077
4078 /* Note that for some reason, a spurious space is tacked
4079 onto the end of the args in some (at least one anyway)
4080 implementations, so strip it off if it exists. */
4081
4082 {
4083 char *command = elf_tdata (abfd)->core->command;
4084 int n = strlen (command);
4085
4086 if (0 < n && command[n - 1] == ' ')
4087 command[n - 1] = '\0';
4088 }
4089
4090 return TRUE;
4091 }
4092
4093 static char *
4094 elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
4095 int note_type, ...)
4096 {
4097 va_list ap;
4098
4099 switch (note_type)
4100 {
4101 default:
4102 return NULL;
4103
4104 case NT_PRPSINFO:
4105 {
4106 char data[124] = { 0 };
4107 const char *fname, *psargs;
4108
4109 va_start (ap, note_type);
4110 fname = va_arg (ap, const char *);
4111 psargs = va_arg (ap, const char *);
4112 va_end (ap);
4113
4114 strncpy (data + 28, fname, 16);
4115 strncpy (data + 44, psargs, 80);
4116 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
4117 &data, sizeof (data));
4118 }
4119
4120 case NT_PRSTATUS:
4121 {
4122 char data[224] = { 0 };
4123 long pid;
4124 int cursig;
4125 const void *gregs;
4126
4127 va_start (ap, note_type);
4128 pid = va_arg (ap, long);
4129 cursig = va_arg (ap, int);
4130 gregs = va_arg (ap, const void *);
4131 va_end (ap);
4132
4133 bfd_put_16 (abfd, cursig, data + 12);
4134 bfd_put_32 (abfd, pid, data + 24);
4135 memcpy (data + 72, gregs, 144);
4136 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
4137 &data, sizeof (data));
4138 }
4139 }
4140 /* NOTREACHED */
4141 }
4142 \f
4143 /* Return address for Ith PLT stub in section PLT, for relocation REL
4144 or (bfd_vma) -1 if it should not be included. */
4145
4146 static bfd_vma
4147 elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
4148 const arelent *rel ATTRIBUTE_UNUSED)
4149 {
4150 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
4151 }
4152
4153 /* Merge backend specific data from an object file to the output
4154 object file when linking. */
4155
4156 static bfd_boolean
4157 elf32_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4158 {
4159 bfd *obfd = info->output_bfd;
4160
4161 if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
4162 return TRUE;
4163
4164 if (!elf_s390_merge_obj_attributes (ibfd, info))
4165 return FALSE;
4166
4167 elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
4168 return TRUE;
4169 }
4170
4171
4172 #define TARGET_BIG_SYM s390_elf32_vec
4173 #define TARGET_BIG_NAME "elf32-s390"
4174 #define ELF_ARCH bfd_arch_s390
4175 #define ELF_TARGET_ID S390_ELF_DATA
4176 #define ELF_MACHINE_CODE EM_S390
4177 #define ELF_MACHINE_ALT1 EM_S390_OLD
4178 #define ELF_MAXPAGESIZE 0x1000
4179
4180 #define elf_backend_can_gc_sections 1
4181 #define elf_backend_can_refcount 1
4182 #define elf_backend_want_got_plt 1
4183 #define elf_backend_plt_readonly 1
4184 #define elf_backend_want_plt_sym 0
4185 #define elf_backend_got_header_size 12
4186 #define elf_backend_rela_normal 1
4187
4188 #define elf_info_to_howto elf_s390_info_to_howto
4189
4190 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
4191 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
4192 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
4193 #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
4194
4195 #define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
4196
4197 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
4198 #define elf_backend_check_relocs elf_s390_check_relocs
4199 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
4200 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
4201 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4202 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
4203 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
4204 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
4205 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
4206 #define elf_backend_relocate_section elf_s390_relocate_section
4207 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
4208 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4209 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
4210 #define elf_backend_grok_psinfo elf_s390_grok_psinfo
4211 #define elf_backend_write_core_note elf_s390_write_core_note
4212 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
4213 #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
4214 #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
4215
4216 #define bfd_elf32_mkobject elf_s390_mkobject
4217 #define elf_backend_object_p elf_s390_object_p
4218
4219 #include "elf32-target.h"
GDB Binutils - Deliverables
This page took 0.131103 seconds and 5 git commands to generate.