projects / deliverable / binutils-gdb.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
s390: Check UNDEFWEAK_NO_DYNAMIC_RELOC
[deliverable/binutils-gdb.git] / bfd / elf32-s390.c
1 /* IBM S/390-specific support for 32-bit ELF
2 Copyright (C) 2000-2017 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 *irelifunc;
742
743 union
744 {
745 bfd_signed_vma refcount;
746 bfd_vma offset;
747 } tls_ldm_got;
748
749 /* Small local sym cache. */
750 struct sym_cache sym_cache;
751 };
752
753 /* Get the s390 ELF linker hash table from a link_info structure. */
754
755 #define elf_s390_hash_table(p) \
756 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
757 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
758
759 #undef ELF64
760 #include "elf-s390-common.c"
761
762 /* Create an entry in an s390 ELF linker hash table. */
763
764 static struct bfd_hash_entry *
765 link_hash_newfunc (struct bfd_hash_entry *entry,
766 struct bfd_hash_table *table,
767 const char *string)
768 {
769 /* Allocate the structure if it has not already been allocated by a
770 subclass. */
771 if (entry == NULL)
772 {
773 entry = bfd_hash_allocate (table,
774 sizeof (struct elf_s390_link_hash_entry));
775 if (entry == NULL)
776 return entry;
777 }
778
779 /* Call the allocation method of the superclass. */
780 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
781 if (entry != NULL)
782 {
783 struct elf_s390_link_hash_entry *eh;
784
785 eh = (struct elf_s390_link_hash_entry *) entry;
786 eh->dyn_relocs = NULL;
787 eh->gotplt_refcount = 0;
788 eh->tls_type = GOT_UNKNOWN;
789 eh->ifunc_resolver_address = 0;
790 eh->ifunc_resolver_section = NULL;
791 }
792
793 return entry;
794 }
795
796 /* Create an s390 ELF linker hash table. */
797
798 static struct bfd_link_hash_table *
799 elf_s390_link_hash_table_create (bfd *abfd)
800 {
801 struct elf_s390_link_hash_table *ret;
802 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
803
804 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
805 if (ret == NULL)
806 return NULL;
807
808 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
809 sizeof (struct elf_s390_link_hash_entry),
810 S390_ELF_DATA))
811 {
812 free (ret);
813 return NULL;
814 }
815
816 return &ret->elf.root;
817 }
818
819 /* Copy the extra info we tack onto an elf_link_hash_entry. */
820
821 static void
822 elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
823 struct elf_link_hash_entry *dir,
824 struct elf_link_hash_entry *ind)
825 {
826 struct elf_s390_link_hash_entry *edir, *eind;
827
828 edir = (struct elf_s390_link_hash_entry *) dir;
829 eind = (struct elf_s390_link_hash_entry *) ind;
830
831 if (eind->dyn_relocs != NULL)
832 {
833 if (edir->dyn_relocs != NULL)
834 {
835 struct elf_dyn_relocs **pp;
836 struct elf_dyn_relocs *p;
837
838 /* Add reloc counts against the indirect sym to the direct sym
839 list. Merge any entries against the same section. */
840 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
841 {
842 struct elf_dyn_relocs *q;
843
844 for (q = edir->dyn_relocs; q != NULL; q = q->next)
845 if (q->sec == p->sec)
846 {
847 q->pc_count += p->pc_count;
848 q->count += p->count;
849 *pp = p->next;
850 break;
851 }
852 if (q == NULL)
853 pp = &p->next;
854 }
855 *pp = edir->dyn_relocs;
856 }
857
858 edir->dyn_relocs = eind->dyn_relocs;
859 eind->dyn_relocs = NULL;
860 }
861
862 if (ind->root.type == bfd_link_hash_indirect
863 && dir->got.refcount <= 0)
864 {
865 edir->tls_type = eind->tls_type;
866 eind->tls_type = GOT_UNKNOWN;
867 }
868
869 if (ELIMINATE_COPY_RELOCS
870 && ind->root.type != bfd_link_hash_indirect
871 && dir->dynamic_adjusted)
872 {
873 /* If called to transfer flags for a weakdef during processing
874 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
875 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
876 if (dir->versioned != versioned_hidden)
877 dir->ref_dynamic |= ind->ref_dynamic;
878 dir->ref_regular |= ind->ref_regular;
879 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
880 dir->needs_plt |= ind->needs_plt;
881 }
882 else
883 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
884 }
885
886 static int
887 elf_s390_tls_transition (struct bfd_link_info *info,
888 int r_type,
889 int is_local)
890 {
891 if (bfd_link_pic (info))
892 return r_type;
893
894 switch (r_type)
895 {
896 case R_390_TLS_GD32:
897 case R_390_TLS_IE32:
898 if (is_local)
899 return R_390_TLS_LE32;
900 return R_390_TLS_IE32;
901 case R_390_TLS_GOTIE32:
902 if (is_local)
903 return R_390_TLS_LE32;
904 return R_390_TLS_GOTIE32;
905 case R_390_TLS_LDM32:
906 return R_390_TLS_LE32;
907 }
908
909 return r_type;
910 }
911
912 /* Look through the relocs for a section during the first phase, and
913 allocate space in the global offset table or procedure linkage
914 table. */
915
916 static bfd_boolean
917 elf_s390_check_relocs (bfd *abfd,
918 struct bfd_link_info *info,
919 asection *sec,
920 const Elf_Internal_Rela *relocs)
921 {
922 struct elf_s390_link_hash_table *htab;
923 Elf_Internal_Shdr *symtab_hdr;
924 struct elf_link_hash_entry **sym_hashes;
925 const Elf_Internal_Rela *rel;
926 const Elf_Internal_Rela *rel_end;
927 asection *sreloc;
928 bfd_signed_vma *local_got_refcounts;
929 int tls_type, old_tls_type;
930 Elf_Internal_Sym *isym;
931
932 if (bfd_link_relocatable (info))
933 return TRUE;
934
935 BFD_ASSERT (is_s390_elf (abfd));
936
937 htab = elf_s390_hash_table (info);
938 symtab_hdr = &elf_symtab_hdr (abfd);
939 sym_hashes = elf_sym_hashes (abfd);
940 local_got_refcounts = elf_local_got_refcounts (abfd);
941
942 sreloc = NULL;
943
944 rel_end = relocs + sec->reloc_count;
945 for (rel = relocs; rel < rel_end; rel++)
946 {
947 unsigned int r_type;
948 unsigned int r_symndx;
949 struct elf_link_hash_entry *h;
950
951 r_symndx = ELF32_R_SYM (rel->r_info);
952
953 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
954 {
955 /* xgettext:c-format */
956 _bfd_error_handler (_("%B: bad symbol index: %d"),
957 abfd, r_symndx);
958 return FALSE;
959 }
960
961 if (r_symndx < symtab_hdr->sh_info)
962 {
963 /* A local symbol. */
964 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
965 abfd, r_symndx);
966 if (isym == NULL)
967 return FALSE;
968
969 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
970 {
971 struct plt_entry *plt;
972
973 if (htab->elf.dynobj == NULL)
974 htab->elf.dynobj = abfd;
975
976 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
977 return FALSE;
978
979 if (local_got_refcounts == NULL)
980 {
981 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
982 return FALSE;
983 local_got_refcounts = elf_local_got_refcounts (abfd);
984 }
985 plt = elf_s390_local_plt (abfd);
986 plt[r_symndx].plt.refcount++;
987 }
988 h = NULL;
989 }
990 else
991 {
992 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
993 while (h->root.type == bfd_link_hash_indirect
994 || h->root.type == bfd_link_hash_warning)
995 h = (struct elf_link_hash_entry *) h->root.u.i.link;
996
997 /* PR15323, ref flags aren't set for references in the same
998 object. */
999 h->root.non_ir_ref_regular = 1;
1000 }
1001
1002 /* Create got section and local_got_refcounts array if they
1003 are needed. */
1004 r_type = elf_s390_tls_transition (info,
1005 ELF32_R_TYPE (rel->r_info),
1006 h == NULL);
1007 switch (r_type)
1008 {
1009 case R_390_GOT12:
1010 case R_390_GOT16:
1011 case R_390_GOT20:
1012 case R_390_GOT32:
1013 case R_390_GOTENT:
1014 case R_390_GOTPLT12:
1015 case R_390_GOTPLT16:
1016 case R_390_GOTPLT20:
1017 case R_390_GOTPLT32:
1018 case R_390_GOTPLTENT:
1019 case R_390_TLS_GD32:
1020 case R_390_TLS_GOTIE12:
1021 case R_390_TLS_GOTIE20:
1022 case R_390_TLS_GOTIE32:
1023 case R_390_TLS_IEENT:
1024 case R_390_TLS_IE32:
1025 case R_390_TLS_LDM32:
1026 if (h == NULL
1027 && local_got_refcounts == NULL)
1028 {
1029 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
1030 return FALSE;
1031 local_got_refcounts = elf_local_got_refcounts (abfd);
1032 }
1033 /* Fall through. */
1034 case R_390_GOTOFF16:
1035 case R_390_GOTOFF32:
1036 case R_390_GOTPC:
1037 case R_390_GOTPCDBL:
1038 if (htab->elf.sgot == NULL)
1039 {
1040 if (htab->elf.dynobj == NULL)
1041 htab->elf.dynobj = abfd;
1042 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
1043 return FALSE;
1044 }
1045 }
1046
1047 if (h != NULL)
1048 {
1049 if (htab->elf.dynobj == NULL)
1050 htab->elf.dynobj = abfd;
1051 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1052 return FALSE;
1053
1054 /* Make sure an IFUNC symbol defined in a non-shared object
1055 always gets a PLT slot. */
1056 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1057 {
1058 /* The symbol is called by the dynamic loader in order
1059 to resolve the relocation. So it is in fact also
1060 referenced. */
1061 h->ref_regular = 1;
1062 h->needs_plt = 1;
1063 }
1064 }
1065 switch (r_type)
1066 {
1067 case R_390_GOTPC:
1068 case R_390_GOTPCDBL:
1069 /* These relocs do not need a GOT slot. They just load the
1070 GOT pointer itself or address something else relative to
1071 the GOT. Since the GOT pointer has been set up above we
1072 are done. */
1073 break;
1074 case R_390_GOTOFF16:
1075 case R_390_GOTOFF32:
1076 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
1077 break;
1078 /* Fall through. */
1079
1080 case R_390_PLT12DBL:
1081 case R_390_PLT16DBL:
1082 case R_390_PLT24DBL:
1083 case R_390_PLT32DBL:
1084 case R_390_PLT32:
1085 case R_390_PLTOFF16:
1086 case R_390_PLTOFF32:
1087 /* This symbol requires a procedure linkage table entry. We
1088 actually build the entry in adjust_dynamic_symbol,
1089 because this might be a case of linking PIC code which is
1090 never referenced by a dynamic object, in which case we
1091 don't need to generate a procedure linkage table entry
1092 after all. */
1093
1094 /* If this is a local symbol, we resolve it directly without
1095 creating a procedure linkage table entry. */
1096 if (h != NULL)
1097 {
1098 h->needs_plt = 1;
1099 h->plt.refcount += 1;
1100 }
1101 break;
1102
1103 case R_390_GOTPLT12:
1104 case R_390_GOTPLT16:
1105 case R_390_GOTPLT20:
1106 case R_390_GOTPLT32:
1107 case R_390_GOTPLTENT:
1108 /* This symbol requires either a procedure linkage table entry
1109 or an entry in the local got. We actually build the entry
1110 in adjust_dynamic_symbol because whether this is really a
1111 global reference can change and with it the fact if we have
1112 to create a plt entry or a local got entry. To be able to
1113 make a once global symbol a local one we have to keep track
1114 of the number of gotplt references that exist for this
1115 symbol. */
1116 if (h != NULL)
1117 {
1118 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1119 h->needs_plt = 1;
1120 h->plt.refcount += 1;
1121 }
1122 else
1123 local_got_refcounts[r_symndx] += 1;
1124 break;
1125
1126 case R_390_TLS_LDM32:
1127 htab->tls_ldm_got.refcount += 1;
1128 break;
1129
1130 case R_390_TLS_IE32:
1131 case R_390_TLS_GOTIE12:
1132 case R_390_TLS_GOTIE20:
1133 case R_390_TLS_GOTIE32:
1134 case R_390_TLS_IEENT:
1135 if (bfd_link_pic (info))
1136 info->flags |= DF_STATIC_TLS;
1137 /* Fall through. */
1138
1139 case R_390_GOT12:
1140 case R_390_GOT16:
1141 case R_390_GOT20:
1142 case R_390_GOT32:
1143 case R_390_GOTENT:
1144 case R_390_TLS_GD32:
1145 /* This symbol requires a global offset table entry. */
1146 switch (r_type)
1147 {
1148 default:
1149 case R_390_GOT12:
1150 case R_390_GOT16:
1151 case R_390_GOT20:
1152 case R_390_GOT32:
1153 case R_390_GOTENT:
1154 tls_type = GOT_NORMAL;
1155 break;
1156 case R_390_TLS_GD32:
1157 tls_type = GOT_TLS_GD;
1158 break;
1159 case R_390_TLS_IE32:
1160 case R_390_TLS_GOTIE32:
1161 tls_type = GOT_TLS_IE;
1162 break;
1163 case R_390_TLS_GOTIE12:
1164 case R_390_TLS_GOTIE20:
1165 case R_390_TLS_IEENT:
1166 tls_type = GOT_TLS_IE_NLT;
1167 break;
1168 }
1169
1170 if (h != NULL)
1171 {
1172 h->got.refcount += 1;
1173 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1174 }
1175 else
1176 {
1177 local_got_refcounts[r_symndx] += 1;
1178 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1179 }
1180 /* If a TLS symbol is accessed using IE at least once,
1181 there is no point to use dynamic model for it. */
1182 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1183 {
1184 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1185 {
1186 _bfd_error_handler
1187 /* xgettext:c-format */
1188 (_("%B: `%s' accessed both as normal and thread local symbol"),
1189 abfd, h->root.root.string);
1190 return FALSE;
1191 }
1192 if (old_tls_type > tls_type)
1193 tls_type = old_tls_type;
1194 }
1195
1196 if (old_tls_type != tls_type)
1197 {
1198 if (h != NULL)
1199 elf_s390_hash_entry (h)->tls_type = tls_type;
1200 else
1201 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1202 }
1203
1204 if (r_type != R_390_TLS_IE32)
1205 break;
1206 /* Fall through. */
1207
1208 case R_390_TLS_LE32:
1209 /* For static linking and executables this reloc will be
1210 calculated at linktime otherwise a TLS_TPOFF runtime
1211 reloc will be generated. */
1212 if (r_type == R_390_TLS_LE32 && bfd_link_pie (info))
1213 break;
1214
1215 if (!bfd_link_pic (info))
1216 break;
1217 info->flags |= DF_STATIC_TLS;
1218 /* Fall through. */
1219
1220 case R_390_8:
1221 case R_390_16:
1222 case R_390_32:
1223 case R_390_PC16:
1224 case R_390_PC12DBL:
1225 case R_390_PC16DBL:
1226 case R_390_PC24DBL:
1227 case R_390_PC32DBL:
1228 case R_390_PC32:
1229 if (h != NULL && bfd_link_executable (info))
1230 {
1231 /* If this reloc is in a read-only section, we might
1232 need a copy reloc. We can't check reliably at this
1233 stage whether the section is read-only, as input
1234 sections have not yet been mapped to output sections.
1235 Tentatively set the flag for now, and correct in
1236 adjust_dynamic_symbol. */
1237 h->non_got_ref = 1;
1238
1239 if (!bfd_link_pic (info))
1240 {
1241 /* We may need a .plt entry if the function this reloc
1242 refers to is in a shared lib. */
1243 h->plt.refcount += 1;
1244 }
1245 }
1246
1247 /* If we are creating a shared library, and this is a reloc
1248 against a global symbol, or a non PC relative reloc
1249 against a local symbol, then we need to copy the reloc
1250 into the shared library. However, if we are linking with
1251 -Bsymbolic, we do not need to copy a reloc against a
1252 global symbol which is defined in an object we are
1253 including in the link (i.e., DEF_REGULAR is set). At
1254 this point we have not seen all the input files, so it is
1255 possible that DEF_REGULAR is not set now but will be set
1256 later (it is never cleared). In case of a weak definition,
1257 DEF_REGULAR may be cleared later by a strong definition in
1258 a shared library. We account for that possibility below by
1259 storing information in the relocs_copied field of the hash
1260 table entry. A similar situation occurs when creating
1261 shared libraries and symbol visibility changes render the
1262 symbol local.
1263
1264 If on the other hand, we are creating an executable, we
1265 may need to keep relocations for symbols satisfied by a
1266 dynamic library if we manage to avoid copy relocs for the
1267 symbol. */
1268 if ((bfd_link_pic (info)
1269 && (sec->flags & SEC_ALLOC) != 0
1270 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
1271 && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL
1272 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
1273 && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL
1274 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
1275 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1276 || (h != NULL
1277 && (! SYMBOLIC_BIND (info, h)
1278 || h->root.type == bfd_link_hash_defweak
1279 || !h->def_regular))))
1280 || (ELIMINATE_COPY_RELOCS
1281 && !bfd_link_pic (info)
1282 && (sec->flags & SEC_ALLOC) != 0
1283 && h != NULL
1284 && (h->root.type == bfd_link_hash_defweak
1285 || !h->def_regular)))
1286 {
1287 struct elf_dyn_relocs *p;
1288 struct elf_dyn_relocs **head;
1289
1290 /* We must copy these reloc types into the output file.
1291 Create a reloc section in dynobj and make room for
1292 this reloc. */
1293 if (sreloc == NULL)
1294 {
1295 if (htab->elf.dynobj == NULL)
1296 htab->elf.dynobj = abfd;
1297
1298 sreloc = _bfd_elf_make_dynamic_reloc_section
1299 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1300
1301 if (sreloc == NULL)
1302 return FALSE;
1303 }
1304
1305 /* If this is a global symbol, we count the number of
1306 relocations we need for this symbol. */
1307 if (h != NULL)
1308 {
1309 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1310 }
1311 else
1312 {
1313 /* Track dynamic relocs needed for local syms too.
1314 We really need local syms available to do this
1315 easily. Oh well. */
1316 asection *s;
1317 void *vpp;
1318
1319 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1320 abfd, r_symndx);
1321 if (isym == NULL)
1322 return FALSE;
1323
1324 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1325 if (s == NULL)
1326 s = sec;
1327
1328 vpp = &elf_section_data (s)->local_dynrel;
1329 head = (struct elf_dyn_relocs **) vpp;
1330 }
1331
1332 p = *head;
1333 if (p == NULL || p->sec != sec)
1334 {
1335 bfd_size_type amt = sizeof *p;
1336
1337 p = ((struct elf_dyn_relocs *)
1338 bfd_alloc (htab->elf.dynobj, amt));
1339 if (p == NULL)
1340 return FALSE;
1341 p->next = *head;
1342 *head = p;
1343 p->sec = sec;
1344 p->count = 0;
1345 p->pc_count = 0;
1346 }
1347
1348 p->count += 1;
1349 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
1350 || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL
1351 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
1352 || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL
1353 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
1354 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1355 p->pc_count += 1;
1356 }
1357 break;
1358
1359 /* This relocation describes the C++ object vtable hierarchy.
1360 Reconstruct it for later use during GC. */
1361 case R_390_GNU_VTINHERIT:
1362 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1363 return FALSE;
1364 break;
1365
1366 /* This relocation describes which C++ vtable entries are actually
1367 used. Record for later use during GC. */
1368 case R_390_GNU_VTENTRY:
1369 BFD_ASSERT (h != NULL);
1370 if (h != NULL
1371 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1372 return FALSE;
1373 break;
1374
1375 default:
1376 break;
1377 }
1378 }
1379
1380 return TRUE;
1381 }
1382
1383 /* Return the section that should be marked against GC for a given
1384 relocation. */
1385
1386 static asection *
1387 elf_s390_gc_mark_hook (asection *sec,
1388 struct bfd_link_info *info,
1389 Elf_Internal_Rela *rel,
1390 struct elf_link_hash_entry *h,
1391 Elf_Internal_Sym *sym)
1392 {
1393 if (h != NULL)
1394 switch (ELF32_R_TYPE (rel->r_info))
1395 {
1396 case R_390_GNU_VTINHERIT:
1397 case R_390_GNU_VTENTRY:
1398 return NULL;
1399 }
1400 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1401
1402 }
1403
1404 /* Update the got entry reference counts for the section being removed. */
1405
1406 static bfd_boolean
1407 elf_s390_gc_sweep_hook (bfd *abfd,
1408 struct bfd_link_info *info,
1409 asection *sec,
1410 const Elf_Internal_Rela *relocs)
1411 {
1412 struct elf_s390_link_hash_table *htab;
1413 Elf_Internal_Shdr *symtab_hdr;
1414 struct elf_link_hash_entry **sym_hashes;
1415 bfd_signed_vma *local_got_refcounts;
1416 const Elf_Internal_Rela *rel, *relend;
1417
1418 if (bfd_link_relocatable (info))
1419 return TRUE;
1420
1421 htab = elf_s390_hash_table (info);
1422 if (htab == NULL)
1423 return FALSE;
1424
1425 elf_section_data (sec)->local_dynrel = NULL;
1426
1427 symtab_hdr = &elf_symtab_hdr (abfd);
1428 sym_hashes = elf_sym_hashes (abfd);
1429 local_got_refcounts = elf_local_got_refcounts (abfd);
1430
1431 relend = relocs + sec->reloc_count;
1432 for (rel = relocs; rel < relend; rel++)
1433 {
1434 unsigned long r_symndx;
1435 unsigned int r_type;
1436 struct elf_link_hash_entry *h = NULL;
1437
1438 r_symndx = ELF32_R_SYM (rel->r_info);
1439 if (r_symndx >= symtab_hdr->sh_info)
1440 {
1441 struct elf_s390_link_hash_entry *eh;
1442 struct elf_dyn_relocs **pp;
1443 struct elf_dyn_relocs *p;
1444
1445 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1446 while (h->root.type == bfd_link_hash_indirect
1447 || h->root.type == bfd_link_hash_warning)
1448 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1449 eh = (struct elf_s390_link_hash_entry *) h;
1450
1451 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1452 if (p->sec == sec)
1453 {
1454 /* Everything must go for SEC. */
1455 *pp = p->next;
1456 break;
1457 }
1458 }
1459 else
1460 {
1461 Elf_Internal_Sym *isym;
1462
1463 /* A local symbol. */
1464 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1465 abfd, r_symndx);
1466 if (isym == NULL)
1467 return FALSE;
1468
1469 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1470 {
1471 struct plt_entry *plt = elf_s390_local_plt (abfd);
1472 if (plt[r_symndx].plt.refcount > 0)
1473 plt[r_symndx].plt.refcount--;
1474 }
1475 }
1476
1477 r_type = ELF32_R_TYPE (rel->r_info);
1478 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1479 switch (r_type)
1480 {
1481 case R_390_TLS_LDM32:
1482 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1483 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1484 break;
1485
1486 case R_390_GOTOFF16:
1487 case R_390_GOTOFF32:
1488 if (h != NULL && s390_is_ifunc_symbol_p (h) && h->def_regular)
1489 {
1490 h->plt.refcount--;
1491 break;
1492 }
1493
1494 case R_390_GOTPC:
1495 case R_390_GOTPCDBL:
1496 break;
1497
1498 case R_390_TLS_GD32:
1499 case R_390_TLS_IE32:
1500 case R_390_TLS_GOTIE12:
1501 case R_390_TLS_GOTIE20:
1502 case R_390_TLS_GOTIE32:
1503 case R_390_TLS_IEENT:
1504 case R_390_GOT12:
1505 case R_390_GOT16:
1506 case R_390_GOT20:
1507 case R_390_GOT32:
1508 case R_390_GOTENT:
1509 if (h != NULL)
1510 {
1511 if (h->got.refcount > 0)
1512 h->got.refcount -= 1;
1513 }
1514 else if (local_got_refcounts != NULL)
1515 {
1516 if (local_got_refcounts[r_symndx] > 0)
1517 local_got_refcounts[r_symndx] -= 1;
1518 }
1519 break;
1520
1521 case R_390_8:
1522 case R_390_12:
1523 case R_390_16:
1524 case R_390_20:
1525 case R_390_32:
1526 case R_390_PC16:
1527 case R_390_PC12DBL:
1528 case R_390_PC16DBL:
1529 case R_390_PC24DBL:
1530 case R_390_PC32DBL:
1531 case R_390_PC32:
1532 if (bfd_link_pic (info))
1533 break;
1534 /* Fall through. */
1535
1536 case R_390_PLT12DBL:
1537 case R_390_PLT16DBL:
1538 case R_390_PLT24DBL:
1539 case R_390_PLT32DBL:
1540 case R_390_PLT32:
1541 case R_390_PLTOFF16:
1542 case R_390_PLTOFF32:
1543 if (h != NULL)
1544 {
1545 if (h->plt.refcount > 0)
1546 h->plt.refcount -= 1;
1547 }
1548 break;
1549
1550 case R_390_GOTPLT12:
1551 case R_390_GOTPLT16:
1552 case R_390_GOTPLT20:
1553 case R_390_GOTPLT32:
1554 case R_390_GOTPLTENT:
1555 if (h != NULL)
1556 {
1557 if (h->plt.refcount > 0)
1558 {
1559 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1560 h->plt.refcount -= 1;
1561 }
1562 }
1563 else if (local_got_refcounts != NULL)
1564 {
1565 if (local_got_refcounts[r_symndx] > 0)
1566 local_got_refcounts[r_symndx] -= 1;
1567 }
1568 break;
1569
1570 default:
1571 break;
1572 }
1573 }
1574
1575 return TRUE;
1576 }
1577
1578 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1579 entry but we found we will not create any. Called when we find we will
1580 not have any PLT for this symbol, by for example
1581 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1582 or elf_s390_size_dynamic_sections if no dynamic sections will be
1583 created (we're only linking static objects). */
1584
1585 static void
1586 elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
1587 {
1588 if (h->elf.root.type == bfd_link_hash_warning)
1589 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1590
1591 if (h->gotplt_refcount <= 0)
1592 return;
1593
1594 /* We simply add the number of gotplt references to the number
1595 * of got references for this symbol. */
1596 h->elf.got.refcount += h->gotplt_refcount;
1597 h->gotplt_refcount = -1;
1598 }
1599
1600 /* Adjust a symbol defined by a dynamic object and referenced by a
1601 regular object. The current definition is in some section of the
1602 dynamic object, but we're not including those sections. We have to
1603 change the definition to something the rest of the link can
1604 understand. */
1605
1606 static bfd_boolean
1607 elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1608 struct elf_link_hash_entry *h)
1609 {
1610 struct elf_s390_link_hash_table *htab;
1611 asection *s, *srel;
1612
1613 /* STT_GNU_IFUNC symbol must go through PLT. */
1614 if (s390_is_ifunc_symbol_p (h))
1615 {
1616 /* All local STT_GNU_IFUNC references must be treated as local
1617 calls via local PLT. */
1618 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1619 {
1620 bfd_size_type pc_count = 0, count = 0;
1621 struct elf_dyn_relocs **pp;
1622 struct elf_s390_link_hash_entry *eh;
1623 struct elf_dyn_relocs *p;
1624
1625 eh = (struct elf_s390_link_hash_entry *) h;
1626 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1627 {
1628 pc_count += p->pc_count;
1629 p->count -= p->pc_count;
1630 p->pc_count = 0;
1631 count += p->count;
1632 if (p->count == 0)
1633 *pp = p->next;
1634 else
1635 pp = &p->next;
1636 }
1637
1638 if (pc_count || count)
1639 {
1640 h->needs_plt = 1;
1641 h->non_got_ref = 1;
1642 if (h->plt.refcount <= 0)
1643 h->plt.refcount = 1;
1644 else
1645 h->plt.refcount += 1;
1646 }
1647 }
1648
1649 if (h->plt.refcount <= 0)
1650 {
1651 h->plt.offset = (bfd_vma) -1;
1652 h->needs_plt = 0;
1653 }
1654 return TRUE;
1655 }
1656
1657 /* If this is a function, put it in the procedure linkage table. We
1658 will fill in the contents of the procedure linkage table later
1659 (although we could actually do it here). */
1660 if (h->type == STT_FUNC
1661 || h->needs_plt)
1662 {
1663 if (h->plt.refcount <= 0
1664 || SYMBOL_CALLS_LOCAL (info, h)
1665 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1666 && h->root.type != bfd_link_hash_undefweak))
1667 {
1668 /* This case can occur if we saw a PLT32 reloc in an input
1669 file, but the symbol was never referred to by a dynamic
1670 object, or if all references were garbage collected. In
1671 such a case, we don't actually need to build a procedure
1672 linkage table, and we can just do a PC32 reloc instead. */
1673 h->plt.offset = (bfd_vma) -1;
1674 h->needs_plt = 0;
1675 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1676 }
1677
1678 return TRUE;
1679 }
1680 else
1681 /* It's possible that we incorrectly decided a .plt reloc was
1682 needed for an R_390_PC32 reloc to a non-function sym in
1683 check_relocs. We can't decide accurately between function and
1684 non-function syms in check-relocs; Objects loaded later in
1685 the link may change h->type. So fix it now. */
1686 h->plt.offset = (bfd_vma) -1;
1687
1688 /* If this is a weak symbol, and there is a real definition, the
1689 processor independent code will have arranged for us to see the
1690 real definition first, and we can just use the same value. */
1691 if (h->u.weakdef != NULL)
1692 {
1693 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1694 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1695 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1696 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1697 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1698 h->non_got_ref = h->u.weakdef->non_got_ref;
1699 return TRUE;
1700 }
1701
1702 /* This is a reference to a symbol defined by a dynamic object which
1703 is not a function. */
1704
1705 /* If we are creating a shared library, we must presume that the
1706 only references to the symbol are via the global offset table.
1707 For such cases we need not do anything here; the relocations will
1708 be handled correctly by relocate_section. */
1709 if (bfd_link_pic (info))
1710 return TRUE;
1711
1712 /* If there are no references to this symbol that do not use the
1713 GOT, we don't need to generate a copy reloc. */
1714 if (!h->non_got_ref)
1715 return TRUE;
1716
1717 /* If -z nocopyreloc was given, we won't generate them either. */
1718 if (info->nocopyreloc)
1719 {
1720 h->non_got_ref = 0;
1721 return TRUE;
1722 }
1723
1724 if (ELIMINATE_COPY_RELOCS)
1725 {
1726 struct elf_s390_link_hash_entry * eh;
1727 struct elf_dyn_relocs *p;
1728
1729 eh = (struct elf_s390_link_hash_entry *) h;
1730 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1731 {
1732 s = p->sec->output_section;
1733 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1734 break;
1735 }
1736
1737 /* If we didn't find any dynamic relocs in read-only sections, then
1738 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1739 if (p == NULL)
1740 {
1741 h->non_got_ref = 0;
1742 return TRUE;
1743 }
1744 }
1745
1746 /* We must allocate the symbol in our .dynbss section, which will
1747 become part of the .bss section of the executable. There will be
1748 an entry for this symbol in the .dynsym section. The dynamic
1749 object will contain position independent code, so all references
1750 from the dynamic object to this symbol will go through the global
1751 offset table. The dynamic linker will use the .dynsym entry to
1752 determine the address it must put in the global offset table, so
1753 both the dynamic object and the regular object will refer to the
1754 same memory location for the variable. */
1755
1756 htab = elf_s390_hash_table (info);
1757
1758 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1759 copy the initial value out of the dynamic object and into the
1760 runtime process image. */
1761 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1762 {
1763 s = htab->elf.sdynrelro;
1764 srel = htab->elf.sreldynrelro;
1765 }
1766 else
1767 {
1768 s = htab->elf.sdynbss;
1769 srel = htab->elf.srelbss;
1770 }
1771 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
1772 {
1773 srel->size += sizeof (Elf32_External_Rela);
1774 h->needs_copy = 1;
1775 }
1776
1777 return _bfd_elf_adjust_dynamic_copy (info, h, s);
1778 }
1779
1780 /* Allocate space in .plt, .got and associated reloc sections for
1781 dynamic relocs. */
1782
1783 static bfd_boolean
1784 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1785 {
1786 struct bfd_link_info *info;
1787 struct elf_s390_link_hash_table *htab;
1788 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
1789 struct elf_dyn_relocs *p;
1790
1791 if (h->root.type == bfd_link_hash_indirect)
1792 return TRUE;
1793
1794 info = (struct bfd_link_info *) inf;
1795 htab = elf_s390_hash_table (info);
1796
1797 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1798 here if it is defined and referenced in a non-shared object. */
1799 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1800 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
1801 else if (htab->elf.dynamic_sections_created
1802 && h->plt.refcount > 0)
1803 {
1804 /* Make sure this symbol is output as a dynamic symbol.
1805 Undefined weak syms won't yet be marked as dynamic. */
1806 if (h->dynindx == -1
1807 && !h->forced_local)
1808 {
1809 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1810 return FALSE;
1811 }
1812
1813 if (bfd_link_pic (info)
1814 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1815 {
1816 asection *s = htab->elf.splt;
1817
1818 /* If this is the first .plt entry, make room for the special
1819 first entry. */
1820 if (s->size == 0)
1821 s->size += PLT_FIRST_ENTRY_SIZE;
1822
1823 h->plt.offset = s->size;
1824
1825 /* If this symbol is not defined in a regular file, and we are
1826 not generating a shared library, then set the symbol to this
1827 location in the .plt. This is required to make function
1828 pointers compare as equal between the normal executable and
1829 the shared library. */
1830 if (! bfd_link_pic (info)
1831 && !h->def_regular)
1832 {
1833 h->root.u.def.section = s;
1834 h->root.u.def.value = h->plt.offset;
1835 }
1836
1837 /* Make room for this entry. */
1838 s->size += PLT_ENTRY_SIZE;
1839
1840 /* We also need to make an entry in the .got.plt section, which
1841 will be placed in the .got section by the linker script. */
1842 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
1843
1844 /* We also need to make an entry in the .rela.plt section. */
1845 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
1846 }
1847 else
1848 {
1849 h->plt.offset = (bfd_vma) -1;
1850 h->needs_plt = 0;
1851 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1852 }
1853 }
1854 else
1855 {
1856 h->plt.offset = (bfd_vma) -1;
1857 h->needs_plt = 0;
1858 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1859 }
1860
1861 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1862 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1863 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1864 we can save the dynamic TLS relocation. */
1865 if (h->got.refcount > 0
1866 && !bfd_link_pic (info)
1867 && h->dynindx == -1
1868 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1869 {
1870 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1871 /* For the GOTIE access without a literal pool entry the offset has
1872 to be stored somewhere. The immediate value in the instruction
1873 is not bit enough so the value is stored in the got. */
1874 {
1875 h->got.offset = htab->elf.sgot->size;
1876 htab->elf.sgot->size += GOT_ENTRY_SIZE;
1877 }
1878 else
1879 h->got.offset = (bfd_vma) -1;
1880 }
1881 else if (h->got.refcount > 0)
1882 {
1883 asection *s;
1884 bfd_boolean dyn;
1885 int tls_type = elf_s390_hash_entry(h)->tls_type;
1886
1887 /* Make sure this symbol is output as a dynamic symbol.
1888 Undefined weak syms won't yet be marked as dynamic. */
1889 if (h->dynindx == -1
1890 && !h->forced_local)
1891 {
1892 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1893 return FALSE;
1894 }
1895
1896 s = htab->elf.sgot;
1897 h->got.offset = s->size;
1898 s->size += GOT_ENTRY_SIZE;
1899 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1900 if (tls_type == GOT_TLS_GD)
1901 s->size += GOT_ENTRY_SIZE;
1902 dyn = htab->elf.dynamic_sections_created;
1903 /* R_390_TLS_IE32 needs one dynamic relocation,
1904 R_390_TLS_GD32 needs one if local symbol and two if global. */
1905 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1906 || tls_type >= GOT_TLS_IE)
1907 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
1908 else if (tls_type == GOT_TLS_GD)
1909 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela);
1910 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1911 || h->root.type != bfd_link_hash_undefweak)
1912 && (bfd_link_pic (info)
1913 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1914 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
1915 }
1916 else
1917 h->got.offset = (bfd_vma) -1;
1918
1919 if (eh->dyn_relocs == NULL)
1920 return TRUE;
1921
1922 /* In the shared -Bsymbolic case, discard space allocated for
1923 dynamic pc-relative relocs against symbols which turn out to be
1924 defined in regular objects. For the normal shared case, discard
1925 space for pc-relative relocs that have become local due to symbol
1926 visibility changes. */
1927
1928 if (bfd_link_pic (info))
1929 {
1930 if (SYMBOL_CALLS_LOCAL (info, h))
1931 {
1932 struct elf_dyn_relocs **pp;
1933
1934 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1935 {
1936 p->count -= p->pc_count;
1937 p->pc_count = 0;
1938 if (p->count == 0)
1939 *pp = p->next;
1940 else
1941 pp = &p->next;
1942 }
1943 }
1944
1945 /* Also discard relocs on undefined weak syms with non-default
1946 visibility. */
1947 if (eh->dyn_relocs != NULL
1948 && h->root.type == bfd_link_hash_undefweak)
1949 {
1950 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1951 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
1952 eh->dyn_relocs = NULL;
1953
1954 /* Make sure undefined weak symbols are output as a dynamic
1955 symbol in PIEs. */
1956 else if (h->dynindx == -1
1957 && !h->forced_local)
1958 {
1959 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1960 return FALSE;
1961 }
1962 }
1963 }
1964 else if (ELIMINATE_COPY_RELOCS)
1965 {
1966 /* For the non-shared case, discard space for relocs against
1967 symbols which turn out to need copy relocs or are not
1968 dynamic. */
1969
1970 if (!h->non_got_ref
1971 && ((h->def_dynamic
1972 && !h->def_regular)
1973 || (htab->elf.dynamic_sections_created
1974 && (h->root.type == bfd_link_hash_undefweak
1975 || h->root.type == bfd_link_hash_undefined))))
1976 {
1977 /* Make sure this symbol is output as a dynamic symbol.
1978 Undefined weak syms won't yet be marked as dynamic. */
1979 if (h->dynindx == -1
1980 && !h->forced_local)
1981 {
1982 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1983 return FALSE;
1984 }
1985
1986 /* If that succeeded, we know we'll be keeping all the
1987 relocs. */
1988 if (h->dynindx != -1)
1989 goto keep;
1990 }
1991
1992 eh->dyn_relocs = NULL;
1993
1994 keep: ;
1995 }
1996
1997 /* Finally, allocate space. */
1998 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1999 {
2000 asection *sreloc = elf_section_data (p->sec)->sreloc;
2001
2002 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2003 }
2004
2005 return TRUE;
2006 }
2007
2008 /* Find any dynamic relocs that apply to read-only sections. */
2009
2010 static bfd_boolean
2011 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2012 {
2013 struct elf_s390_link_hash_entry *eh;
2014 struct elf_dyn_relocs *p;
2015
2016 eh = (struct elf_s390_link_hash_entry *) h;
2017 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2018 {
2019 asection *s = p->sec->output_section;
2020
2021 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2022 {
2023 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2024
2025 info->flags |= DF_TEXTREL;
2026
2027 /* Not an error, just cut short the traversal. */
2028 return FALSE;
2029 }
2030 }
2031 return TRUE;
2032 }
2033
2034 /* Set the sizes of the dynamic sections. */
2035
2036 static bfd_boolean
2037 elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2038 struct bfd_link_info *info)
2039 {
2040 struct elf_s390_link_hash_table *htab;
2041 bfd *dynobj;
2042 asection *s;
2043 bfd_boolean relocs;
2044 bfd *ibfd;
2045
2046 htab = elf_s390_hash_table (info);
2047 dynobj = htab->elf.dynobj;
2048 if (dynobj == NULL)
2049 abort ();
2050
2051 if (htab->elf.dynamic_sections_created)
2052 {
2053 /* Set the contents of the .interp section to the interpreter. */
2054 if (bfd_link_executable (info) && !info->nointerp)
2055 {
2056 s = bfd_get_linker_section (dynobj, ".interp");
2057 if (s == NULL)
2058 abort ();
2059 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2060 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2061 }
2062 }
2063
2064 /* Set up .got offsets for local syms, and space for local dynamic
2065 relocs. */
2066 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2067 {
2068 bfd_signed_vma *local_got;
2069 bfd_signed_vma *end_local_got;
2070 char *local_tls_type;
2071 bfd_size_type locsymcount;
2072 Elf_Internal_Shdr *symtab_hdr;
2073 asection *srela;
2074 struct plt_entry *local_plt;
2075 unsigned int i;
2076
2077 if (! is_s390_elf (ibfd))
2078 continue;
2079
2080 for (s = ibfd->sections; s != NULL; s = s->next)
2081 {
2082 struct elf_dyn_relocs *p;
2083
2084 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2085 {
2086 if (!bfd_is_abs_section (p->sec)
2087 && bfd_is_abs_section (p->sec->output_section))
2088 {
2089 /* Input section has been discarded, either because
2090 it is a copy of a linkonce section or due to
2091 linker script /DISCARD/, so we'll be discarding
2092 the relocs too. */
2093 }
2094 else if (p->count != 0)
2095 {
2096 srela = elf_section_data (p->sec)->sreloc;
2097 srela->size += p->count * sizeof (Elf32_External_Rela);
2098 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2099 info->flags |= DF_TEXTREL;
2100 }
2101 }
2102 }
2103
2104 local_got = elf_local_got_refcounts (ibfd);
2105 if (!local_got)
2106 continue;
2107
2108 symtab_hdr = &elf_symtab_hdr (ibfd);
2109 locsymcount = symtab_hdr->sh_info;
2110 end_local_got = local_got + locsymcount;
2111 local_tls_type = elf_s390_local_got_tls_type (ibfd);
2112 s = htab->elf.sgot;
2113 srela = htab->elf.srelgot;
2114 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2115 {
2116 if (*local_got > 0)
2117 {
2118 *local_got = s->size;
2119 s->size += GOT_ENTRY_SIZE;
2120 if (*local_tls_type == GOT_TLS_GD)
2121 s->size += GOT_ENTRY_SIZE;
2122 if (bfd_link_pic (info))
2123 srela->size += sizeof (Elf32_External_Rela);
2124 }
2125 else
2126 *local_got = (bfd_vma) -1;
2127 }
2128 local_plt = elf_s390_local_plt (ibfd);
2129 for (i = 0; i < symtab_hdr->sh_info; i++)
2130 {
2131 if (local_plt[i].plt.refcount > 0)
2132 {
2133 local_plt[i].plt.offset = htab->elf.iplt->size;
2134 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2135 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2136 htab->elf.irelplt->size += RELA_ENTRY_SIZE;
2137 }
2138 else
2139 local_plt[i].plt.offset = (bfd_vma) -1;
2140 }
2141 }
2142
2143 if (htab->tls_ldm_got.refcount > 0)
2144 {
2145 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2146 relocs. */
2147 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2148 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2149 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
2150 }
2151 else
2152 htab->tls_ldm_got.offset = -1;
2153
2154 /* Allocate global sym .plt and .got entries, and space for global
2155 sym dynamic relocs. */
2156 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2157
2158 /* We now have determined the sizes of the various dynamic sections.
2159 Allocate memory for them. */
2160 relocs = FALSE;
2161 for (s = dynobj->sections; s != NULL; s = s->next)
2162 {
2163 if ((s->flags & SEC_LINKER_CREATED) == 0)
2164 continue;
2165
2166 if (s == htab->elf.splt
2167 || s == htab->elf.sgot
2168 || s == htab->elf.sgotplt
2169 || s == htab->elf.sdynbss
2170 || s == htab->elf.sdynrelro
2171 || s == htab->elf.iplt
2172 || s == htab->elf.igotplt
2173 || s == htab->irelifunc)
2174 {
2175 /* Strip this section if we don't need it; see the
2176 comment below. */
2177 }
2178 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2179 {
2180 if (s->size != 0)
2181 relocs = TRUE;
2182
2183 /* We use the reloc_count field as a counter if we need
2184 to copy relocs into the output file. */
2185 s->reloc_count = 0;
2186 }
2187 else
2188 {
2189 /* It's not one of our sections, so don't allocate space. */
2190 continue;
2191 }
2192
2193 if (s->size == 0)
2194 {
2195 /* If we don't need this section, strip it from the
2196 output file. This is to handle .rela.bss and
2197 .rela.plt. We must create it in
2198 create_dynamic_sections, because it must be created
2199 before the linker maps input sections to output
2200 sections. The linker does that before
2201 adjust_dynamic_symbol is called, and it is that
2202 function which decides whether anything needs to go
2203 into these sections. */
2204
2205 s->flags |= SEC_EXCLUDE;
2206 continue;
2207 }
2208
2209 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2210 continue;
2211
2212 /* Allocate memory for the section contents. We use bfd_zalloc
2213 here in case unused entries are not reclaimed before the
2214 section's contents are written out. This should not happen,
2215 but this way if it does, we get a R_390_NONE reloc instead
2216 of garbage. */
2217 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2218 if (s->contents == NULL)
2219 return FALSE;
2220 }
2221
2222 if (htab->elf.dynamic_sections_created)
2223 {
2224 /* Add some entries to the .dynamic section. We fill in the
2225 values later, in elf_s390_finish_dynamic_sections, but we
2226 must add the entries now so that we get the correct size for
2227 the .dynamic section. The DT_DEBUG entry is filled in by the
2228 dynamic linker and used by the debugger. */
2229 #define add_dynamic_entry(TAG, VAL) \
2230 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2231
2232 if (bfd_link_executable (info))
2233 {
2234 if (!add_dynamic_entry (DT_DEBUG, 0))
2235 return FALSE;
2236 }
2237
2238 if (htab->elf.splt->size != 0)
2239 {
2240 if (!add_dynamic_entry (DT_PLTGOT, 0)
2241 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2242 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2243 || !add_dynamic_entry (DT_JMPREL, 0))
2244 return FALSE;
2245 }
2246
2247 if (relocs)
2248 {
2249 if (!add_dynamic_entry (DT_RELA, 0)
2250 || !add_dynamic_entry (DT_RELASZ, 0)
2251 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2252 return FALSE;
2253
2254 /* If any dynamic relocs apply to a read-only section,
2255 then we need a DT_TEXTREL entry. */
2256 if ((info->flags & DF_TEXTREL) == 0)
2257 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
2258
2259 if ((info->flags & DF_TEXTREL) != 0)
2260 {
2261 if (!add_dynamic_entry (DT_TEXTREL, 0))
2262 return FALSE;
2263 }
2264 }
2265 }
2266 #undef add_dynamic_entry
2267
2268 return TRUE;
2269 }
2270
2271 /* Return the base VMA address which should be subtracted from real addresses
2272 when resolving @dtpoff relocation.
2273 This is PT_TLS segment p_vaddr. */
2274
2275 static bfd_vma
2276 dtpoff_base (struct bfd_link_info *info)
2277 {
2278 /* If tls_sec is NULL, we should have signalled an error already. */
2279 if (elf_hash_table (info)->tls_sec == NULL)
2280 return 0;
2281 return elf_hash_table (info)->tls_sec->vma;
2282 }
2283
2284 /* Return the relocation value for @tpoff relocation
2285 if STT_TLS virtual address is ADDRESS. */
2286
2287 static bfd_vma
2288 tpoff (struct bfd_link_info *info, bfd_vma address)
2289 {
2290 struct elf_link_hash_table *htab = elf_hash_table (info);
2291
2292 /* If tls_sec is NULL, we should have signalled an error already. */
2293 if (htab->tls_sec == NULL)
2294 return 0;
2295 return htab->tls_size + htab->tls_sec->vma - address;
2296 }
2297
2298 /* Complain if TLS instruction relocation is against an invalid
2299 instruction. */
2300
2301 static void
2302 invalid_tls_insn (bfd *input_bfd,
2303 asection *input_section,
2304 Elf_Internal_Rela *rel)
2305 {
2306 reloc_howto_type *howto;
2307
2308 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2309 _bfd_error_handler
2310 /* xgettext:c-format */
2311 (_("%B(%A+%#Lx): invalid instruction for TLS relocation %s"),
2312 input_bfd,
2313 input_section,
2314 rel->r_offset,
2315 howto->name);
2316 bfd_set_error (bfd_error_bad_value);
2317 }
2318
2319 /* Relocate a 390 ELF section. */
2320
2321 static bfd_boolean
2322 elf_s390_relocate_section (bfd *output_bfd,
2323 struct bfd_link_info *info,
2324 bfd *input_bfd,
2325 asection *input_section,
2326 bfd_byte *contents,
2327 Elf_Internal_Rela *relocs,
2328 Elf_Internal_Sym *local_syms,
2329 asection **local_sections)
2330 {
2331 struct elf_s390_link_hash_table *htab;
2332 Elf_Internal_Shdr *symtab_hdr;
2333 struct elf_link_hash_entry **sym_hashes;
2334 bfd_vma *local_got_offsets;
2335 Elf_Internal_Rela *rel;
2336 Elf_Internal_Rela *relend;
2337
2338 BFD_ASSERT (is_s390_elf (input_bfd));
2339
2340 htab = elf_s390_hash_table (info);
2341 symtab_hdr = &elf_symtab_hdr (input_bfd);
2342 sym_hashes = elf_sym_hashes (input_bfd);
2343 local_got_offsets = elf_local_got_offsets (input_bfd);
2344
2345 rel = relocs;
2346 relend = relocs + input_section->reloc_count;
2347 for (; rel < relend; rel++)
2348 {
2349 unsigned int r_type;
2350 reloc_howto_type *howto;
2351 unsigned long r_symndx;
2352 struct elf_link_hash_entry *h;
2353 Elf_Internal_Sym *sym;
2354 asection *sec;
2355 bfd_vma off;
2356 bfd_vma relocation;
2357 bfd_boolean unresolved_reloc;
2358 bfd_reloc_status_type r;
2359 int tls_type;
2360 asection *base_got = htab->elf.sgot;
2361 bfd_boolean resolved_to_zero;
2362
2363 r_type = ELF32_R_TYPE (rel->r_info);
2364 if (r_type == (int) R_390_GNU_VTINHERIT
2365 || r_type == (int) R_390_GNU_VTENTRY)
2366 continue;
2367 if (r_type >= (int) R_390_max)
2368 {
2369 bfd_set_error (bfd_error_bad_value);
2370 return FALSE;
2371 }
2372
2373 howto = elf_howto_table + r_type;
2374 r_symndx = ELF32_R_SYM (rel->r_info);
2375
2376 h = NULL;
2377 sym = NULL;
2378 sec = NULL;
2379 unresolved_reloc = FALSE;
2380 if (r_symndx < symtab_hdr->sh_info)
2381 {
2382 sym = local_syms + r_symndx;
2383 sec = local_sections[r_symndx];
2384 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2385 {
2386 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2387 if (local_plt == NULL)
2388 return FALSE;
2389
2390 /* Address of the PLT slot. */
2391 relocation = (htab->elf.iplt->output_section->vma
2392 + htab->elf.iplt->output_offset
2393 + local_plt[r_symndx].plt.offset);
2394
2395 switch (r_type)
2396 {
2397 case R_390_PLTOFF16:
2398 case R_390_PLTOFF32:
2399 relocation -= htab->elf.sgot->output_section->vma;
2400 break;
2401 case R_390_GOTPLT12:
2402 case R_390_GOTPLT16:
2403 case R_390_GOTPLT20:
2404 case R_390_GOTPLT32:
2405 case R_390_GOTPLTENT:
2406 case R_390_GOT12:
2407 case R_390_GOT16:
2408 case R_390_GOT20:
2409 case R_390_GOT32:
2410 case R_390_GOTENT:
2411 {
2412 /* Write the PLT slot address into the GOT slot. */
2413 bfd_put_32 (output_bfd, relocation,
2414 htab->elf.sgot->contents +
2415 local_got_offsets[r_symndx]);
2416 relocation = (local_got_offsets[r_symndx] +
2417 htab->elf.sgot->output_offset);
2418
2419 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2420 relocation += htab->elf.sgot->output_section->vma;
2421 break;
2422 }
2423 default:
2424 break;
2425 }
2426 /* The output section is needed later in
2427 finish_dynamic_section when creating the dynamic
2428 relocation. */
2429 local_plt[r_symndx].sec = sec;
2430 goto do_relocation;
2431 }
2432 else
2433 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2434 }
2435 else
2436 {
2437 bfd_boolean warned ATTRIBUTE_UNUSED;
2438 bfd_boolean ignored ATTRIBUTE_UNUSED;
2439
2440 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2441 r_symndx, symtab_hdr, sym_hashes,
2442 h, sec, relocation,
2443 unresolved_reloc, warned, ignored);
2444 }
2445
2446 if (sec != NULL && discarded_section (sec))
2447 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2448 rel, 1, relend, howto, 0, contents);
2449
2450 if (bfd_link_relocatable (info))
2451 continue;
2452
2453 resolved_to_zero = (h != NULL
2454 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
2455
2456 switch (r_type)
2457 {
2458 case R_390_GOTPLT12:
2459 case R_390_GOTPLT16:
2460 case R_390_GOTPLT20:
2461 case R_390_GOTPLT32:
2462 case R_390_GOTPLTENT:
2463 /* There are three cases for a GOTPLT relocation. 1) The
2464 relocation is against the jump slot entry of a plt that
2465 will get emitted to the output file. 2) The relocation
2466 is against the jump slot of a plt entry that has been
2467 removed. elf_s390_adjust_gotplt has created a GOT entry
2468 as replacement. 3) The relocation is against a local symbol.
2469 Cases 2) and 3) are the same as the GOT relocation code
2470 so we just have to test for case 1 and fall through for
2471 the other two. */
2472 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2473 {
2474 bfd_vma plt_index;
2475
2476 if (s390_is_ifunc_symbol_p (h))
2477 {
2478 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2479 relocation = (plt_index * GOT_ENTRY_SIZE +
2480 htab->elf.igotplt->output_offset);
2481 if (r_type == R_390_GOTPLTENT)
2482 relocation += htab->elf.igotplt->output_section->vma;
2483 }
2484 else
2485 {
2486 /* Calc. index no.
2487 Current offset - size first entry / entry size. */
2488 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2489 PLT_ENTRY_SIZE;
2490
2491 /* Offset in GOT is PLT index plus GOT headers(3)
2492 times 4, addr & GOT addr. */
2493 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2494 if (r_type == R_390_GOTPLTENT)
2495 relocation += htab->elf.sgot->output_section->vma;
2496 }
2497 unresolved_reloc = FALSE;
2498
2499 }
2500 /* Fall through. */
2501
2502 case R_390_GOT12:
2503 case R_390_GOT16:
2504 case R_390_GOT20:
2505 case R_390_GOT32:
2506 case R_390_GOTENT:
2507 /* Relocation is to the entry for this symbol in the global
2508 offset table. */
2509 if (base_got == NULL)
2510 abort ();
2511
2512 if (h != NULL)
2513 {
2514 bfd_boolean dyn;
2515
2516 off = h->got.offset;
2517 dyn = htab->elf.dynamic_sections_created;
2518
2519 if (s390_is_ifunc_symbol_p (h))
2520 {
2521 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2522 if (off == (bfd_vma)-1)
2523 {
2524 /* No explicit GOT usage so redirect to the
2525 got.iplt slot. */
2526 base_got = htab->elf.igotplt;
2527 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2528 }
2529 else
2530 {
2531 /* Explicit GOT slots must contain the address
2532 of the PLT slot. This will be handled in
2533 finish_dynamic_symbol. */
2534 }
2535 }
2536 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2537 bfd_link_pic (info),
2538 h)
2539 || (bfd_link_pic (info)
2540 && SYMBOL_REFERENCES_LOCAL (info, h))
2541 || (ELF_ST_VISIBILITY (h->other)
2542 && h->root.type == bfd_link_hash_undefweak))
2543
2544 {
2545 /* This is actually a static link, or it is a
2546 -Bsymbolic link and the symbol is defined
2547 locally, or the symbol was forced to be local
2548 because of a version file. We must initialize
2549 this entry in the global offset table. Since the
2550 offset must always be a multiple of 2, we use the
2551 least significant bit to record whether we have
2552 initialized it already.
2553
2554 When doing a dynamic link, we create a .rel.got
2555 relocation entry to initialize the value. This
2556 is done in the finish_dynamic_symbol routine. */
2557 if ((off & 1) != 0)
2558 off &= ~1;
2559 else
2560 {
2561 bfd_put_32 (output_bfd, relocation,
2562 base_got->contents + off);
2563 h->got.offset |= 1;
2564 }
2565
2566 if ((h->def_regular
2567 && bfd_link_pic (info)
2568 && SYMBOL_REFERENCES_LOCAL (info, h))
2569 /* lrl rx,sym@GOTENT -> larl rx, sym */
2570 && ((r_type == R_390_GOTENT
2571 && (bfd_get_16 (input_bfd,
2572 contents + rel->r_offset - 2)
2573 & 0xff0f) == 0xc40d)
2574 /* ly rx, sym@GOT(r12) -> larl rx, sym */
2575 || (r_type == R_390_GOT20
2576 && (bfd_get_32 (input_bfd,
2577 contents + rel->r_offset - 2)
2578 & 0xff00f000) == 0xe300c000
2579 && bfd_get_8 (input_bfd,
2580 contents + rel->r_offset + 3) == 0x58)))
2581 {
2582 unsigned short new_insn =
2583 (0xc000 | (bfd_get_8 (input_bfd,
2584 contents + rel->r_offset - 1) & 0xf0));
2585 bfd_put_16 (output_bfd, new_insn,
2586 contents + rel->r_offset - 2);
2587 r_type = R_390_PC32DBL;
2588 rel->r_addend = 2;
2589 howto = elf_howto_table + r_type;
2590 relocation = h->root.u.def.value
2591 + h->root.u.def.section->output_section->vma
2592 + h->root.u.def.section->output_offset;
2593 goto do_relocation;
2594 }
2595 }
2596 else
2597 unresolved_reloc = FALSE;
2598 }
2599 else
2600 {
2601 if (local_got_offsets == NULL)
2602 abort ();
2603
2604 off = local_got_offsets[r_symndx];
2605
2606 /* The offset must always be a multiple of 4. We use
2607 the least significant bit to record whether we have
2608 already generated the necessary reloc. */
2609 if ((off & 1) != 0)
2610 off &= ~1;
2611 else
2612 {
2613 bfd_put_32 (output_bfd, relocation,
2614 htab->elf.sgot->contents + off);
2615
2616 if (bfd_link_pic (info))
2617 {
2618 asection *srelgot;
2619 Elf_Internal_Rela outrel;
2620 bfd_byte *loc;
2621
2622 srelgot = htab->elf.srelgot;
2623 if (srelgot == NULL)
2624 abort ();
2625
2626 outrel.r_offset = (htab->elf.sgot->output_section->vma
2627 + htab->elf.sgot->output_offset
2628 + off);
2629 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2630 outrel.r_addend = relocation;
2631 loc = srelgot->contents;
2632 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
2633 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2634 }
2635
2636 local_got_offsets[r_symndx] |= 1;
2637 }
2638 }
2639
2640 if (off >= (bfd_vma) -2)
2641 abort ();
2642
2643 relocation = base_got->output_offset + off;
2644
2645 /* For @GOTENT the relocation is against the offset between
2646 the instruction and the symbols entry in the GOT and not
2647 between the start of the GOT and the symbols entry. We
2648 add the vma of the GOT to get the correct value. */
2649 if ( r_type == R_390_GOTENT
2650 || r_type == R_390_GOTPLTENT)
2651 relocation += base_got->output_section->vma;
2652
2653 break;
2654
2655 case R_390_GOTOFF16:
2656 case R_390_GOTOFF32:
2657 /* Relocation is relative to the start of the global offset
2658 table. */
2659
2660 if (h != NULL
2661 && s390_is_ifunc_symbol_p (h)
2662 && h->def_regular
2663 && !bfd_link_executable (info))
2664 {
2665 relocation = (htab->elf.iplt->output_section->vma
2666 + htab->elf.iplt->output_offset
2667 + h->plt.offset
2668 - htab->elf.sgot->output_section->vma);
2669 goto do_relocation;
2670 }
2671
2672 /* Note that sgot->output_offset is not involved in this
2673 calculation. We always want the start of .got. If we
2674 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2675 permitted by the ABI, we might have to change this
2676 calculation. */
2677 relocation -= htab->elf.sgot->output_section->vma;
2678 break;
2679
2680 case R_390_GOTPC:
2681 case R_390_GOTPCDBL:
2682 /* Use global offset table as symbol value. */
2683 relocation = htab->elf.sgot->output_section->vma;
2684 unresolved_reloc = FALSE;
2685 break;
2686
2687 case R_390_PLT12DBL:
2688 case R_390_PLT16DBL:
2689 case R_390_PLT24DBL:
2690 case R_390_PLT32DBL:
2691 case R_390_PLT32:
2692 /* Relocation is to the entry for this symbol in the
2693 procedure linkage table. */
2694
2695 /* Resolve a PLT32 reloc against a local symbol directly,
2696 without using the procedure linkage table. */
2697 if (h == NULL)
2698 break;
2699
2700 if (h->plt.offset == (bfd_vma) -1
2701 || (htab->elf.splt == NULL && htab->elf.iplt == NULL))
2702 {
2703 /* We didn't make a PLT entry for this symbol. This
2704 happens when statically linking PIC code, or when
2705 using -Bsymbolic. */
2706 break;
2707 }
2708
2709 if (s390_is_ifunc_symbol_p (h))
2710 relocation = (htab->elf.iplt->output_section->vma
2711 + htab->elf.iplt->output_offset
2712 + h->plt.offset);
2713 else
2714 relocation = (htab->elf.splt->output_section->vma
2715 + htab->elf.splt->output_offset
2716 + h->plt.offset);
2717 unresolved_reloc = FALSE;
2718 break;
2719
2720 case R_390_PLTOFF16:
2721 case R_390_PLTOFF32:
2722 /* Relocation is to the entry for this symbol in the
2723 procedure linkage table relative to the start of the GOT. */
2724
2725 /* For local symbols or if we didn't make a PLT entry for
2726 this symbol resolve the symbol directly. */
2727 if (h == NULL
2728 || h->plt.offset == (bfd_vma) -1
2729 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
2730 {
2731 relocation -= htab->elf.sgot->output_section->vma;
2732 break;
2733 }
2734
2735 if (s390_is_ifunc_symbol_p (h))
2736 relocation = (htab->elf.iplt->output_section->vma
2737 + htab->elf.iplt->output_offset
2738 + h->plt.offset
2739 - htab->elf.sgot->output_section->vma);
2740 else
2741 relocation = (htab->elf.splt->output_section->vma
2742 + htab->elf.splt->output_offset
2743 + h->plt.offset
2744 - htab->elf.sgot->output_section->vma);
2745 unresolved_reloc = FALSE;
2746 break;
2747
2748 case R_390_PC16:
2749 case R_390_PC12DBL:
2750 case R_390_PC16DBL:
2751 case R_390_PC24DBL:
2752 case R_390_PC32DBL:
2753 case R_390_PC32:
2754 if (h != NULL
2755 && s390_is_ifunc_symbol_p (h)
2756 && h->def_regular
2757 && !bfd_link_executable (info))
2758 {
2759 /* This will not work our if the function does not
2760 happen to set up the GOT pointer for some other
2761 reason. 31 bit PLT entries require r12 to hold the
2762 GOT pointer.
2763 FIXME: Implement an errorcheck.
2764 NOTE: It will work when brasl is not available
2765 (e.g. with -m31 -march=g5) since a local function
2766 call then does use GOTOFF which implies r12 being set
2767 up. */
2768 relocation = (htab->elf.iplt->output_section->vma
2769 + htab->elf.iplt->output_offset
2770 + h ->plt.offset);
2771 goto do_relocation;
2772 }
2773 /* Fall through. */
2774
2775 case R_390_8:
2776 case R_390_16:
2777 case R_390_32:
2778 if (h != NULL
2779 && s390_is_ifunc_symbol_p (h)
2780 && h->def_regular)
2781 {
2782 if (!bfd_link_pic (info))
2783 {
2784 /* For a non-shared object STT_GNU_IFUNC symbol must
2785 go through PLT. */
2786 relocation = (htab->elf.iplt->output_section->vma
2787 + htab->elf.iplt->output_offset
2788 + h ->plt.offset);
2789 goto do_relocation;
2790 }
2791 else
2792 {
2793 /* For shared objects a runtime relocation is needed. */
2794
2795 Elf_Internal_Rela outrel;
2796 asection *sreloc;
2797
2798 /* Need a dynamic relocation to get the real function
2799 address. */
2800 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2801 info,
2802 input_section,
2803 rel->r_offset);
2804 if (outrel.r_offset == (bfd_vma) -1
2805 || outrel.r_offset == (bfd_vma) -2)
2806 abort ();
2807
2808 outrel.r_offset += (input_section->output_section->vma
2809 + input_section->output_offset);
2810
2811 if (h->dynindx == -1
2812 || h->forced_local
2813 || bfd_link_executable (info))
2814 {
2815 /* This symbol is resolved locally. */
2816 outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
2817 outrel.r_addend = (h->root.u.def.value
2818 + h->root.u.def.section->output_section->vma
2819 + h->root.u.def.section->output_offset);
2820 }
2821 else
2822 {
2823 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2824 outrel.r_addend = 0;
2825 }
2826
2827 sreloc = htab->elf.irelifunc;
2828 elf_append_rela (output_bfd, sreloc, &outrel);
2829
2830 /* If this reloc is against an external symbol, we
2831 do not want to fiddle with the addend. Otherwise,
2832 we need to include the symbol value so that it
2833 becomes an addend for the dynamic reloc. For an
2834 internal symbol, we have updated addend. */
2835 continue;
2836 }
2837 }
2838
2839 if ((input_section->flags & SEC_ALLOC) == 0)
2840 break;
2841
2842 if ((bfd_link_pic (info)
2843 && (h == NULL
2844 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2845 && !resolved_to_zero)
2846 || h->root.type != bfd_link_hash_undefweak)
2847 && ((r_type != R_390_PC16
2848 && r_type != R_390_PC12DBL
2849 && r_type != R_390_PC16DBL
2850 && r_type != R_390_PC24DBL
2851 && r_type != R_390_PC32DBL
2852 && r_type != R_390_PC32)
2853 || !SYMBOL_CALLS_LOCAL (info, h)))
2854 || (ELIMINATE_COPY_RELOCS
2855 && !bfd_link_pic (info)
2856 && h != NULL
2857 && h->dynindx != -1
2858 && !h->non_got_ref
2859 && ((h->def_dynamic
2860 && !h->def_regular)
2861 || h->root.type == bfd_link_hash_undefweak
2862 || h->root.type == bfd_link_hash_undefined)))
2863 {
2864 Elf_Internal_Rela outrel;
2865 bfd_boolean skip, relocate;
2866 asection *sreloc;
2867 bfd_byte *loc;
2868
2869 /* When generating a shared object, these relocations
2870 are copied into the output file to be resolved at run
2871 time. */
2872
2873 skip = FALSE;
2874 relocate = FALSE;
2875
2876 outrel.r_offset =
2877 _bfd_elf_section_offset (output_bfd, info, input_section,
2878 rel->r_offset);
2879 if (outrel.r_offset == (bfd_vma) -1)
2880 skip = TRUE;
2881 else if (outrel.r_offset == (bfd_vma) -2)
2882 skip = TRUE, relocate = TRUE;
2883 outrel.r_offset += (input_section->output_section->vma
2884 + input_section->output_offset);
2885
2886 if (skip)
2887 memset (&outrel, 0, sizeof outrel);
2888 else if (h != NULL
2889 && h->dynindx != -1
2890 && (r_type == R_390_PC16
2891 || r_type == R_390_PC12DBL
2892 || r_type == R_390_PC16DBL
2893 || r_type == R_390_PC24DBL
2894 || r_type == R_390_PC32DBL
2895 || r_type == R_390_PC32
2896 || !bfd_link_pic (info)
2897 || !SYMBOLIC_BIND (info, h)
2898 || !h->def_regular))
2899 {
2900 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2901 outrel.r_addend = rel->r_addend;
2902 }
2903 else
2904 {
2905 /* This symbol is local, or marked to become local. */
2906 outrel.r_addend = relocation + rel->r_addend;
2907 if (r_type == R_390_32)
2908 {
2909 relocate = TRUE;
2910 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2911 }
2912 else
2913 {
2914 long sindx;
2915
2916 if (bfd_is_abs_section (sec))
2917 sindx = 0;
2918 else if (sec == NULL || sec->owner == NULL)
2919 {
2920 bfd_set_error(bfd_error_bad_value);
2921 return FALSE;
2922 }
2923 else
2924 {
2925 asection *osec;
2926
2927 osec = sec->output_section;
2928 sindx = elf_section_data (osec)->dynindx;
2929 if (sindx == 0)
2930 {
2931 osec = htab->elf.text_index_section;
2932 sindx = elf_section_data (osec)->dynindx;
2933 }
2934 BFD_ASSERT (sindx != 0);
2935
2936 /* We are turning this relocation into one
2937 against a section symbol, so subtract out
2938 the output section's address but not the
2939 offset of the input section in the output
2940 section. */
2941 outrel.r_addend -= osec->vma;
2942 }
2943 outrel.r_info = ELF32_R_INFO (sindx, r_type);
2944 }
2945 }
2946
2947 sreloc = elf_section_data (input_section)->sreloc;
2948 if (sreloc == NULL)
2949 abort ();
2950
2951 loc = sreloc->contents;
2952 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2953 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2954
2955 /* If this reloc is against an external symbol, we do
2956 not want to fiddle with the addend. Otherwise, we
2957 need to include the symbol value so that it becomes
2958 an addend for the dynamic reloc. */
2959 if (! relocate)
2960 continue;
2961 }
2962 break;
2963
2964 /* Relocations for tls literal pool entries. */
2965 case R_390_TLS_IE32:
2966 if (bfd_link_pic (info))
2967 {
2968 Elf_Internal_Rela outrel;
2969 asection *sreloc;
2970 bfd_byte *loc;
2971
2972 outrel.r_offset = rel->r_offset
2973 + input_section->output_section->vma
2974 + input_section->output_offset;
2975 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2976 sreloc = elf_section_data (input_section)->sreloc;
2977 if (sreloc == NULL)
2978 abort ();
2979 loc = sreloc->contents;
2980 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2981 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2982 }
2983 /* Fall through. */
2984
2985 case R_390_TLS_GD32:
2986 case R_390_TLS_GOTIE32:
2987 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2988 tls_type = GOT_UNKNOWN;
2989 if (h == NULL && local_got_offsets)
2990 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2991 else if (h != NULL)
2992 {
2993 tls_type = elf_s390_hash_entry(h)->tls_type;
2994 if (!bfd_link_pic (info)
2995 && h->dynindx == -1
2996 && tls_type >= GOT_TLS_IE)
2997 r_type = R_390_TLS_LE32;
2998 }
2999 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
3000 r_type = R_390_TLS_IE32;
3001
3002 if (r_type == R_390_TLS_LE32)
3003 {
3004 /* This relocation gets optimized away by the local exec
3005 access optimization. */
3006 BFD_ASSERT (! unresolved_reloc);
3007 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3008 contents + rel->r_offset);
3009 continue;
3010 }
3011
3012 if (htab->elf.sgot == NULL)
3013 abort ();
3014
3015 if (h != NULL)
3016 off = h->got.offset;
3017 else
3018 {
3019 if (local_got_offsets == NULL)
3020 abort ();
3021
3022 off = local_got_offsets[r_symndx];
3023 }
3024
3025 emit_tls_relocs:
3026
3027 if ((off & 1) != 0)
3028 off &= ~1;
3029 else
3030 {
3031 Elf_Internal_Rela outrel;
3032 bfd_byte *loc;
3033 int dr_type, indx;
3034
3035 if (htab->elf.srelgot == NULL)
3036 abort ();
3037
3038 outrel.r_offset = (htab->elf.sgot->output_section->vma
3039 + htab->elf.sgot->output_offset + off);
3040
3041 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3042 if (r_type == R_390_TLS_GD32)
3043 dr_type = R_390_TLS_DTPMOD;
3044 else
3045 dr_type = R_390_TLS_TPOFF;
3046 if (dr_type == R_390_TLS_TPOFF && indx == 0)
3047 outrel.r_addend = relocation - dtpoff_base (info);
3048 else
3049 outrel.r_addend = 0;
3050 outrel.r_info = ELF32_R_INFO (indx, dr_type);
3051 loc = htab->elf.srelgot->contents;
3052 loc += htab->elf.srelgot->reloc_count++
3053 * sizeof (Elf32_External_Rela);
3054 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3055
3056 if (r_type == R_390_TLS_GD32)
3057 {
3058 if (indx == 0)
3059 {
3060 BFD_ASSERT (! unresolved_reloc);
3061 bfd_put_32 (output_bfd,
3062 relocation - dtpoff_base (info),
3063 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3064 }
3065 else
3066 {
3067 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
3068 outrel.r_offset += GOT_ENTRY_SIZE;
3069 outrel.r_addend = 0;
3070 htab->elf.srelgot->reloc_count++;
3071 loc += sizeof (Elf32_External_Rela);
3072 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3073 }
3074 }
3075
3076 if (h != NULL)
3077 h->got.offset |= 1;
3078 else
3079 local_got_offsets[r_symndx] |= 1;
3080 }
3081
3082 if (off >= (bfd_vma) -2)
3083 abort ();
3084 if (r_type == ELF32_R_TYPE (rel->r_info))
3085 {
3086 relocation = htab->elf.sgot->output_offset + off;
3087 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
3088 relocation += htab->elf.sgot->output_section->vma;
3089 unresolved_reloc = FALSE;
3090 }
3091 else
3092 {
3093 bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off,
3094 contents + rel->r_offset);
3095 continue;
3096 }
3097 break;
3098
3099 case R_390_TLS_GOTIE12:
3100 case R_390_TLS_GOTIE20:
3101 case R_390_TLS_IEENT:
3102 if (h == NULL)
3103 {
3104 if (local_got_offsets == NULL)
3105 abort();
3106 off = local_got_offsets[r_symndx];
3107 if (bfd_link_pic (info))
3108 goto emit_tls_relocs;
3109 }
3110 else
3111 {
3112 off = h->got.offset;
3113 tls_type = elf_s390_hash_entry(h)->tls_type;
3114 if (bfd_link_pic (info)
3115 || h->dynindx != -1
3116 || tls_type < GOT_TLS_IE)
3117 goto emit_tls_relocs;
3118 }
3119
3120 if (htab->elf.sgot == NULL)
3121 abort ();
3122
3123 BFD_ASSERT (! unresolved_reloc);
3124 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3125 htab->elf.sgot->contents + off);
3126 relocation = htab->elf.sgot->output_offset + off;
3127 if (r_type == R_390_TLS_IEENT)
3128 relocation += htab->elf.sgot->output_section->vma;
3129 unresolved_reloc = FALSE;
3130 break;
3131
3132 case R_390_TLS_LDM32:
3133 if (! bfd_link_pic (info))
3134 /* The literal pool entry this relocation refers to gets ignored
3135 by the optimized code of the local exec model. Do nothing
3136 and the value will turn out zero. */
3137 continue;
3138
3139 if (htab->elf.sgot == NULL)
3140 abort ();
3141
3142 off = htab->tls_ldm_got.offset;
3143 if (off & 1)
3144 off &= ~1;
3145 else
3146 {
3147 Elf_Internal_Rela outrel;
3148 bfd_byte *loc;
3149
3150 if (htab->elf.srelgot == NULL)
3151 abort ();
3152
3153 outrel.r_offset = (htab->elf.sgot->output_section->vma
3154 + htab->elf.sgot->output_offset + off);
3155
3156 bfd_put_32 (output_bfd, 0,
3157 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3158 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
3159 outrel.r_addend = 0;
3160 loc = htab->elf.srelgot->contents;
3161 loc += htab->elf.srelgot->reloc_count++
3162 * sizeof (Elf32_External_Rela);
3163 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3164 htab->tls_ldm_got.offset |= 1;
3165 }
3166 relocation = htab->elf.sgot->output_offset + off;
3167 unresolved_reloc = FALSE;
3168 break;
3169
3170 case R_390_TLS_LE32:
3171 if (bfd_link_dll (info))
3172 {
3173 /* Linking a shared library with non-fpic code requires
3174 a R_390_TLS_TPOFF relocation. */
3175 Elf_Internal_Rela outrel;
3176 asection *sreloc;
3177 bfd_byte *loc;
3178 int indx;
3179
3180 outrel.r_offset = rel->r_offset
3181 + input_section->output_section->vma
3182 + input_section->output_offset;
3183 if (h != NULL && h->dynindx != -1)
3184 indx = h->dynindx;
3185 else
3186 indx = 0;
3187 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
3188 if (indx == 0)
3189 outrel.r_addend = relocation - dtpoff_base (info);
3190 else
3191 outrel.r_addend = 0;
3192 sreloc = elf_section_data (input_section)->sreloc;
3193 if (sreloc == NULL)
3194 abort ();
3195 loc = sreloc->contents;
3196 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3197 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3198 }
3199 else
3200 {
3201 BFD_ASSERT (! unresolved_reloc);
3202 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3203 contents + rel->r_offset);
3204 }
3205 continue;
3206
3207 case R_390_TLS_LDO32:
3208 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
3209 relocation -= dtpoff_base (info);
3210 else
3211 /* When converting LDO to LE, we must negate. */
3212 relocation = -tpoff (info, relocation);
3213 break;
3214
3215 /* Relocations for tls instructions. */
3216 case R_390_TLS_LOAD:
3217 case R_390_TLS_GDCALL:
3218 case R_390_TLS_LDCALL:
3219 tls_type = GOT_UNKNOWN;
3220 if (h == NULL && local_got_offsets)
3221 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3222 else if (h != NULL)
3223 tls_type = elf_s390_hash_entry(h)->tls_type;
3224
3225 if (tls_type == GOT_TLS_GD)
3226 continue;
3227
3228 if (r_type == R_390_TLS_LOAD)
3229 {
3230 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3231 {
3232 /* IE->LE transition. Four valid cases:
3233 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
3234 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
3235 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
3236 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3237 unsigned int insn, ry;
3238
3239 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3240 if ((insn & 0xff00f000) == 0x58000000)
3241 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
3242 ry = (insn & 0x000f0000);
3243 else if ((insn & 0xff0f0000) == 0x58000000)
3244 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
3245 ry = (insn & 0x0000f000) << 4;
3246 else if ((insn & 0xff00f000) == 0x5800c000)
3247 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
3248 ry = (insn & 0x000f0000);
3249 else if ((insn & 0xff0f0000) == 0x580c0000)
3250 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3251 ry = (insn & 0x0000f000) << 4;
3252 else
3253 {
3254 invalid_tls_insn (input_bfd, input_section, rel);
3255 return FALSE;
3256 }
3257 insn = 0x18000700 | (insn & 0x00f00000) | ry;
3258 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3259 }
3260 }
3261 else if (r_type == R_390_TLS_GDCALL)
3262 {
3263 unsigned int insn;
3264
3265 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3266 if ((insn & 0xff000fff) != 0x4d000000 &&
3267 (insn & 0xffff0000) != 0xc0e50000 &&
3268 (insn & 0xff000000) != 0x0d000000)
3269 {
3270 invalid_tls_insn (input_bfd, input_section, rel);
3271 return FALSE;
3272 }
3273 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3274 {
3275 if ((insn & 0xff000000) == 0x0d000000)
3276 {
3277 /* GD->LE transition.
3278 basr rx, ry -> nopr r7 */
3279 insn = 0x07070000 | (insn & 0xffff);
3280 }
3281 else if ((insn & 0xff000000) == 0x4d000000)
3282 {
3283 /* GD->LE transition.
3284 bas %r14,0(%rx,%r13) -> bc 0,0 */
3285 insn = 0x47000000;
3286 }
3287 else
3288 {
3289 /* GD->LE transition.
3290 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
3291 insn = 0xc0040000;
3292 bfd_put_16 (output_bfd, 0x0000,
3293 contents + rel->r_offset + 4);
3294 }
3295 }
3296 else
3297 {
3298 /* If basr is used in the pic case to invoke
3299 _tls_get_offset, something went wrong before. */
3300 if ((insn & 0xff000000) == 0x0d000000)
3301 {
3302 invalid_tls_insn (input_bfd, input_section, rel);
3303 return FALSE;
3304 }
3305
3306 if ((insn & 0xff000000) == 0x4d000000)
3307 {
3308 /* GD->IE transition.
3309 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3310 insn = 0x5822c000;
3311 }
3312 else
3313 {
3314 /* GD->IE transition.
3315 brasl %r14,__tls_get_addr@plt ->
3316 l %r2,0(%r2,%r12) ; bcr 0,0 */
3317 insn = 0x5822c000;
3318 bfd_put_16 (output_bfd, 0x0700,
3319 contents + rel->r_offset + 4);
3320 }
3321 }
3322 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3323 }
3324 else if (r_type == R_390_TLS_LDCALL)
3325 {
3326 if (!bfd_link_pic (info))
3327 {
3328 unsigned int insn;
3329
3330 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3331 if ((insn & 0xff000fff) != 0x4d000000 &&
3332 (insn & 0xffff0000) != 0xc0e50000 &&
3333 (insn & 0xff000000) != 0x0d000000)
3334 {
3335 invalid_tls_insn (input_bfd, input_section, rel);
3336 return FALSE;
3337 }
3338
3339 if ((insn & 0xff000000) == 0x0d000000)
3340 {
3341 /* LD->LE transition.
3342 basr rx, ry -> nopr r7 */
3343 insn = 0x07070000 | (insn & 0xffff);
3344 }
3345 else if ((insn & 0xff000000) == 0x4d000000)
3346 {
3347 /* LD->LE transition.
3348 bas %r14,0(%rx,%r13) -> bc 0,0 */
3349 insn = 0x47000000;
3350 }
3351 else
3352 {
3353 /* LD->LE transition.
3354 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
3355 insn = 0xc0040000;
3356 bfd_put_16 (output_bfd, 0x0000,
3357 contents + rel->r_offset + 4);
3358 }
3359 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3360 }
3361 }
3362 continue;
3363
3364 default:
3365 break;
3366 }
3367
3368 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3369 because such sections are not SEC_ALLOC and thus ld.so will
3370 not process them. */
3371 if (unresolved_reloc
3372 && !((input_section->flags & SEC_DEBUGGING) != 0
3373 && h->def_dynamic)
3374 && _bfd_elf_section_offset (output_bfd, info, input_section,
3375 rel->r_offset) != (bfd_vma) -1)
3376 _bfd_error_handler
3377 /* xgettext:c-format */
3378 (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
3379 input_bfd,
3380 input_section,
3381 rel->r_offset,
3382 howto->name,
3383 h->root.root.string);
3384
3385 do_relocation:
3386
3387 /* When applying a 24 bit reloc we need to start one byte
3388 earlier. Otherwise the 32 bit get/put bfd operations might
3389 access a byte after the actual section. */
3390 if (r_type == R_390_PC24DBL
3391 || r_type == R_390_PLT24DBL)
3392 rel->r_offset--;
3393
3394 if (r_type == R_390_20
3395 || r_type == R_390_GOT20
3396 || r_type == R_390_GOTPLT20
3397 || r_type == R_390_TLS_GOTIE20)
3398 {
3399 relocation += rel->r_addend;
3400 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3401 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3402 contents, rel->r_offset,
3403 relocation, 0);
3404 }
3405 else
3406 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3407 contents, rel->r_offset,
3408 relocation, rel->r_addend);
3409
3410 if (r != bfd_reloc_ok)
3411 {
3412 const char *name;
3413
3414 if (h != NULL)
3415 name = h->root.root.string;
3416 else
3417 {
3418 name = bfd_elf_string_from_elf_section (input_bfd,
3419 symtab_hdr->sh_link,
3420 sym->st_name);
3421 if (name == NULL)
3422 return FALSE;
3423 if (*name == '\0')
3424 name = bfd_section_name (input_bfd, sec);
3425 }
3426
3427 if (r == bfd_reloc_overflow)
3428 (*info->callbacks->reloc_overflow)
3429 (info, (h ? &h->root : NULL), name, howto->name,
3430 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3431 else
3432 {
3433 _bfd_error_handler
3434 /* xgettext:c-format */
3435 (_("%B(%A+%#Lx): reloc against `%s': error %d"),
3436 input_bfd, input_section,
3437 rel->r_offset, name, (int) r);
3438 return FALSE;
3439 }
3440 }
3441 }
3442
3443 return TRUE;
3444 }
3445
3446 /* Generate the PLT slots together with the dynamic relocations needed
3447 for IFUNC symbols. */
3448
3449 static void
3450 elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3451 struct bfd_link_info *info,
3452 struct elf_link_hash_entry *h,
3453 struct elf_s390_link_hash_table *htab,
3454 bfd_vma iplt_offset,
3455 bfd_vma resolver_address)
3456 {
3457 bfd_vma iplt_index;
3458 bfd_vma got_offset;
3459 bfd_vma igotiplt_offset;
3460 Elf_Internal_Rela rela;
3461 bfd_byte *loc;
3462 asection *plt, *gotplt, *relplt;
3463 bfd_vma relative_offset;
3464
3465 if (htab->elf.iplt == NULL
3466 || htab->elf.igotplt == NULL
3467 || htab->elf.irelplt == NULL)
3468 abort ();
3469
3470 gotplt = htab->elf.igotplt;
3471 relplt = htab->elf.irelplt;
3472
3473 /* Index of the PLT slot within iplt section. */
3474 iplt_index = iplt_offset / PLT_ENTRY_SIZE;
3475 plt = htab->elf.iplt;
3476 /* Offset into the igot.plt section. */
3477 igotiplt_offset = iplt_index * GOT_ENTRY_SIZE;
3478 /* Offset into the got section. */
3479 got_offset = igotiplt_offset + gotplt->output_offset;
3480
3481 /* S390 uses halfwords for relative branch calc! */
3482 relative_offset = - (plt->output_offset +
3483 (PLT_ENTRY_SIZE * iplt_index) + 18) / 2;
3484 /* If offset is > 32768, branch to a previous branch
3485 390 can only handle +-64 K jumps. */
3486 if ( -32768 > (int) relative_offset )
3487 relative_offset
3488 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3489
3490 /* Fill in the entry in the procedure linkage table. */
3491 if (!bfd_link_pic (info))
3492 {
3493 memcpy (plt->contents + iplt_offset, elf_s390_plt_entry,
3494 PLT_ENTRY_SIZE);
3495
3496 /* Adjust jump to the first plt entry. */
3497 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3498 plt->contents + iplt_offset + 20);
3499
3500 /* Push the GOT offset field. */
3501 bfd_put_32 (output_bfd,
3502 (gotplt->output_section->vma
3503 + got_offset),
3504 plt->contents + iplt_offset + 24);
3505 }
3506 else if (got_offset < 4096)
3507 {
3508 /* The GOT offset is small enough to be used directly as
3509 displacement. */
3510 memcpy (plt->contents + iplt_offset,
3511 elf_s390_plt_pic12_entry,
3512 PLT_ENTRY_SIZE);
3513
3514 /* Put in the GOT offset as displacement value. The 0xc000
3515 value comes from the first word of the plt entry. Look
3516 at the elf_s390_plt_pic16_entry content. */
3517 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3518 plt->contents + iplt_offset + 2);
3519
3520 /* Adjust the jump to the first plt entry. */
3521 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3522 plt->contents + iplt_offset + 20);
3523 }
3524 else if (got_offset < 32768)
3525 {
3526 /* The GOT offset is too big for a displacement but small
3527 enough to be a signed 16 bit immediate value as it can be
3528 used in an lhi instruction. */
3529 memcpy (plt->contents + iplt_offset,
3530 elf_s390_plt_pic16_entry,
3531 PLT_ENTRY_SIZE);
3532
3533 /* Put in the GOT offset for the lhi instruction. */
3534 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3535 plt->contents + iplt_offset + 2);
3536
3537 /* Adjust the jump to the first plt entry. */
3538 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3539 plt->contents + iplt_offset + 20);
3540 }
3541 else
3542 {
3543 memcpy (plt->contents + iplt_offset,
3544 elf_s390_plt_pic_entry,
3545 PLT_ENTRY_SIZE);
3546
3547 /* Adjust the jump to the first plt entry. */
3548 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3549 plt->contents + iplt_offset + 20);
3550
3551 /* Push the GOT offset field. */
3552 bfd_put_32 (output_bfd, got_offset,
3553 plt->contents + iplt_offset + 24);
3554 }
3555 /* Insert offset into reloc. table here. */
3556 bfd_put_32 (output_bfd, relplt->output_offset +
3557 iplt_index * RELA_ENTRY_SIZE,
3558 plt->contents + iplt_offset + 28);
3559
3560 /* Fill in the entry in the global offset table.
3561 Points to instruction after GOT offset. */
3562 bfd_put_32 (output_bfd,
3563 (plt->output_section->vma
3564 + plt->output_offset
3565 + iplt_offset
3566 + 12),
3567 gotplt->contents + igotiplt_offset);
3568
3569 /* Fill in the entry in the .rela.plt section. */
3570 rela.r_offset = gotplt->output_section->vma + got_offset;
3571
3572 if (!h
3573 || h->dynindx == -1
3574 || ((bfd_link_executable (info)
3575 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3576 && h->def_regular))
3577 {
3578 /* The symbol can be locally resolved. */
3579 rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
3580 rela.r_addend = resolver_address;
3581 }
3582 else
3583 {
3584 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3585 rela.r_addend = 0;
3586 }
3587
3588 loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE;
3589 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3590 }
3591
3592 /* Finish up dynamic symbol handling. We set the contents of various
3593 dynamic sections here. */
3594
3595 static bfd_boolean
3596 elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3597 struct bfd_link_info *info,
3598 struct elf_link_hash_entry *h,
3599 Elf_Internal_Sym *sym)
3600 {
3601 struct elf_s390_link_hash_table *htab;
3602 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
3603
3604 htab = elf_s390_hash_table (info);
3605
3606 if (h->plt.offset != (bfd_vma) -1)
3607 {
3608 bfd_vma plt_index;
3609 bfd_vma got_offset;
3610 Elf_Internal_Rela rela;
3611 bfd_byte *loc;
3612 bfd_vma relative_offset;
3613
3614 /* This symbol has an entry in the procedure linkage table. Set
3615 it up. */
3616 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
3617 {
3618 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3619 htab, h->plt.offset,
3620 eh->ifunc_resolver_address +
3621 eh->ifunc_resolver_section->output_offset +
3622 eh->ifunc_resolver_section->output_section->vma);
3623 /* Do not return yet. Handling of explicit GOT slots of
3624 IFUNC symbols is below. */
3625 }
3626 else
3627 {
3628 if (h->dynindx == -1
3629 || htab->elf.splt == NULL
3630 || htab->elf.sgotplt == NULL
3631 || htab->elf.srelplt == NULL)
3632 abort ();
3633
3634 /* Calc. index no.
3635 Current offset - size first entry / entry size. */
3636 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3637
3638 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3639 addr & GOT addr. */
3640 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3641
3642 /* S390 uses halfwords for relative branch calc! */
3643 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3644 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3645 /* If offset is > 32768, branch to a previous branch
3646 390 can only handle +-64 K jumps. */
3647 if ( -32768 > (int) relative_offset )
3648 relative_offset
3649 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3650
3651 /* Fill in the entry in the procedure linkage table. */
3652 if (!bfd_link_pic (info))
3653 {
3654 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry,
3655 PLT_ENTRY_SIZE);
3656
3657 /* Adjust jump to the first plt entry. */
3658 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3659 htab->elf.splt->contents + h->plt.offset + 20);
3660
3661 /* Push the GOT offset field. */
3662 bfd_put_32 (output_bfd,
3663 (htab->elf.sgotplt->output_section->vma
3664 + htab->elf.sgotplt->output_offset
3665 + got_offset),
3666 htab->elf.splt->contents + h->plt.offset + 24);
3667 }
3668 else if (got_offset < 4096)
3669 {
3670 /* The GOT offset is small enough to be used directly as
3671 displacement. */
3672 memcpy (htab->elf.splt->contents + h->plt.offset,
3673 elf_s390_plt_pic12_entry,
3674 PLT_ENTRY_SIZE);
3675
3676 /* Put in the GOT offset as displacement value. The 0xc000
3677 value comes from the first word of the plt entry. Look
3678 at the elf_s390_plt_pic12_entry content. */
3679 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3680 htab->elf.splt->contents + h->plt.offset + 2);
3681
3682 /* Adjust the jump to the first plt entry. */
3683 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3684 htab->elf.splt->contents + h->plt.offset + 20);
3685 }
3686 else if (got_offset < 32768)
3687 {
3688 /* The GOT offset is too big for a displacement but small
3689 enough to be a signed 16 bit immediate value as it can be
3690 used in an lhi instruction. */
3691 memcpy (htab->elf.splt->contents + h->plt.offset,
3692 elf_s390_plt_pic16_entry,
3693 PLT_ENTRY_SIZE);
3694
3695 /* Put in the GOT offset for the lhi instruction. */
3696 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3697 htab->elf.splt->contents + h->plt.offset + 2);
3698
3699 /* Adjust the jump to the first plt entry. */
3700 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3701 htab->elf.splt->contents + h->plt.offset + 20);
3702 }
3703 else
3704 {
3705 memcpy (htab->elf.splt->contents + h->plt.offset,
3706 elf_s390_plt_pic_entry,
3707 PLT_ENTRY_SIZE);
3708
3709 /* Adjust the jump to the first plt entry. */
3710 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3711 htab->elf.splt->contents + h->plt.offset + 20);
3712
3713 /* Push the GOT offset field. */
3714 bfd_put_32 (output_bfd, got_offset,
3715 htab->elf.splt->contents + h->plt.offset + 24);
3716 }
3717 /* Insert offset into reloc. table here. */
3718 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3719 htab->elf.splt->contents + h->plt.offset + 28);
3720
3721 /* Fill in the entry in the global offset table.
3722 Points to instruction after GOT offset. */
3723 bfd_put_32 (output_bfd,
3724 (htab->elf.splt->output_section->vma
3725 + htab->elf.splt->output_offset
3726 + h->plt.offset
3727 + 12),
3728 htab->elf.sgotplt->contents + got_offset);
3729
3730 /* Fill in the entry in the .rela.plt section. */
3731 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3732 + htab->elf.sgotplt->output_offset
3733 + got_offset);
3734 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3735 rela.r_addend = 0;
3736 loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3737 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3738
3739 if (!h->def_regular)
3740 {
3741 /* Mark the symbol as undefined, rather than as defined in
3742 the .plt section. Leave the value alone. This is a clue
3743 for the dynamic linker, to make function pointer
3744 comparisons work between an application and shared
3745 library. */
3746 sym->st_shndx = SHN_UNDEF;
3747 }
3748 }
3749 }
3750
3751 if (h->got.offset != (bfd_vma) -1
3752 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3753 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3754 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3755 {
3756 Elf_Internal_Rela rela;
3757 bfd_byte *loc;
3758
3759 /* This symbol has an entry in the global offset table. Set it
3760 up. */
3761
3762 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
3763 abort ();
3764
3765 rela.r_offset = (htab->elf.sgot->output_section->vma
3766 + htab->elf.sgot->output_offset
3767 + (h->got.offset &~ (bfd_vma) 1));
3768
3769 /* If this is a static link, or it is a -Bsymbolic link and the
3770 symbol is defined locally or was forced to be local because
3771 of a version file, we just want to emit a RELATIVE reloc.
3772 The entry in the global offset table will already have been
3773 initialized in the relocate_section function. */
3774 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3775 {
3776 if (bfd_link_pic (info))
3777 {
3778 /* An explicit GOT slot usage needs GLOB_DAT. If the
3779 symbol references local the implicit got.iplt slot
3780 will be used and the IRELATIVE reloc has been created
3781 above. */
3782 goto do_glob_dat;
3783 }
3784 else
3785 {
3786 /* For non-shared objects explicit GOT slots must be
3787 filled with the PLT slot address for pointer
3788 equality reasons. */
3789 bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma
3790 + htab->elf.iplt->output_offset
3791 + h->plt.offset),
3792 htab->elf.sgot->contents + h->got.offset);
3793 return TRUE;
3794 }
3795 }
3796 else if (bfd_link_pic (info)
3797 && SYMBOL_REFERENCES_LOCAL (info, h))
3798 {
3799 /* If this is a static link, or it is a -Bsymbolic link and
3800 the symbol is defined locally or was forced to be local
3801 because of a version file, we just want to emit a
3802 RELATIVE reloc. The entry in the global offset table
3803 will already have been initialized in the
3804 relocate_section function. */
3805 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
3806 return FALSE;
3807 BFD_ASSERT((h->got.offset & 1) != 0);
3808 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3809 rela.r_addend = (h->root.u.def.value
3810 + h->root.u.def.section->output_section->vma
3811 + h->root.u.def.section->output_offset);
3812 }
3813 else
3814 {
3815 BFD_ASSERT((h->got.offset & 1) == 0);
3816 do_glob_dat:
3817 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
3818 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
3819 rela.r_addend = 0;
3820 }
3821
3822 loc = htab->elf.srelgot->contents;
3823 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3824 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3825 }
3826
3827 if (h->needs_copy)
3828 {
3829 Elf_Internal_Rela rela;
3830 asection *s;
3831 bfd_byte *loc;
3832
3833 /* This symbols needs a copy reloc. Set it up. */
3834
3835 if (h->dynindx == -1
3836 || (h->root.type != bfd_link_hash_defined
3837 && h->root.type != bfd_link_hash_defweak)
3838 || htab->elf.srelbss == NULL
3839 || htab->elf.sreldynrelro == 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 if (h->root.u.def.section == htab->elf.sdynrelro)
3848 s = htab->elf.sreldynrelro;
3849 else
3850 s = htab->elf.srelbss;
3851 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
3852 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3853 }
3854
3855 /* Mark some specially defined symbols as absolute. */
3856 if (h == htab->elf.hdynamic
3857 || h == htab->elf.hgot
3858 || h == htab->elf.hplt)
3859 sym->st_shndx = SHN_ABS;
3860
3861 return TRUE;
3862 }
3863
3864 /* Used to decide how to sort relocs in an optimal manner for the
3865 dynamic linker, before writing them out. */
3866
3867 static enum elf_reloc_type_class
3868 elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3869 const asection *rel_sec ATTRIBUTE_UNUSED,
3870 const Elf_Internal_Rela *rela)
3871 {
3872 bfd *abfd = info->output_bfd;
3873 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3874 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3875 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
3876 Elf_Internal_Sym sym;
3877
3878 if (htab->elf.dynsym == NULL
3879 || !bed->s->swap_symbol_in (abfd,
3880 (htab->elf.dynsym->contents
3881 + r_symndx * bed->s->sizeof_sym),
3882 0, &sym))
3883 abort ();
3884
3885 /* Check relocation against STT_GNU_IFUNC symbol. */
3886 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3887 return reloc_class_ifunc;
3888
3889 switch ((int) ELF32_R_TYPE (rela->r_info))
3890 {
3891 case R_390_RELATIVE:
3892 return reloc_class_relative;
3893 case R_390_JMP_SLOT:
3894 return reloc_class_plt;
3895 case R_390_COPY:
3896 return reloc_class_copy;
3897 default:
3898 return reloc_class_normal;
3899 }
3900 }
3901
3902 /* Finish up the dynamic sections. */
3903
3904 static bfd_boolean
3905 elf_s390_finish_dynamic_sections (bfd *output_bfd,
3906 struct bfd_link_info *info)
3907 {
3908 struct elf_s390_link_hash_table *htab;
3909 bfd *dynobj;
3910 asection *sdyn;
3911 bfd *ibfd;
3912 unsigned int i;
3913
3914 htab = elf_s390_hash_table (info);
3915 dynobj = htab->elf.dynobj;
3916 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3917
3918 if (htab->elf.dynamic_sections_created)
3919 {
3920 Elf32_External_Dyn *dyncon, *dynconend;
3921
3922 if (sdyn == NULL || htab->elf.sgot == NULL)
3923 abort ();
3924
3925 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3926 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3927 for (; dyncon < dynconend; dyncon++)
3928 {
3929 Elf_Internal_Dyn dyn;
3930 asection *s;
3931
3932 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3933
3934 switch (dyn.d_tag)
3935 {
3936 default:
3937 continue;
3938
3939 case DT_PLTGOT:
3940 s = htab->elf.sgotplt;
3941 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3942 break;
3943
3944 case DT_JMPREL:
3945 s = htab->elf.srelplt;
3946 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3947 break;
3948
3949 case DT_PLTRELSZ:
3950 dyn.d_un.d_val = htab->elf.srelplt->size;
3951 if (htab->elf.irelplt)
3952 dyn.d_un.d_val += htab->elf.irelplt->size;
3953 break;
3954 }
3955
3956 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3957 }
3958
3959 /* Fill in the special first entry in the procedure linkage table. */
3960 if (htab->elf.splt && htab->elf.splt->size > 0)
3961 {
3962 memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
3963 if (bfd_link_pic (info))
3964 {
3965 memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry,
3966 PLT_FIRST_ENTRY_SIZE);
3967 }
3968 else
3969 {
3970 memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry,
3971 PLT_FIRST_ENTRY_SIZE);
3972 bfd_put_32 (output_bfd,
3973 htab->elf.sgotplt->output_section->vma
3974 + htab->elf.sgotplt->output_offset,
3975 htab->elf.splt->contents + 24);
3976 }
3977 elf_section_data (htab->elf.splt->output_section)
3978 ->this_hdr.sh_entsize = 4;
3979 }
3980
3981 }
3982
3983 if (htab->elf.sgotplt)
3984 {
3985 /* Fill in the first three entries in the global offset table. */
3986 if (htab->elf.sgotplt->size > 0)
3987 {
3988 bfd_put_32 (output_bfd,
3989 (sdyn == NULL ? (bfd_vma) 0
3990 : sdyn->output_section->vma + sdyn->output_offset),
3991 htab->elf.sgotplt->contents);
3992 /* One entry for shared object struct ptr. */
3993 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4);
3994 /* One entry for _dl_runtime_resolve. */
3995 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
3996 }
3997
3998 elf_section_data (htab->elf.sgotplt->output_section)
3999 ->this_hdr.sh_entsize = 4;
4000 }
4001 /* Finish dynamic symbol for local IFUNC symbols. */
4002 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
4003 {
4004 struct plt_entry *local_plt;
4005 Elf_Internal_Sym *isym;
4006 Elf_Internal_Shdr *symtab_hdr;
4007
4008 symtab_hdr = &elf_symtab_hdr (ibfd);
4009
4010 if (!is_s390_elf (ibfd))
4011 continue;
4012
4013 local_plt = elf_s390_local_plt (ibfd);
4014 if (local_plt != NULL)
4015 for (i = 0; i < symtab_hdr->sh_info; i++)
4016 {
4017 if (local_plt[i].plt.offset != (bfd_vma) -1)
4018 {
4019 asection *sec = local_plt[i].sec;
4020 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
4021 if (isym == NULL)
4022 return FALSE;
4023
4024 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4025 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
4026 local_plt[i].plt.offset,
4027 isym->st_value
4028 + sec->output_section->vma
4029 + sec->output_offset);
4030
4031 }
4032 }
4033 }
4034 return TRUE;
4035 }
4036 \f
4037 /* Support for core dump NOTE sections. */
4038
4039 static bfd_boolean
4040 elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note)
4041 {
4042 int offset;
4043 unsigned int size;
4044
4045 switch (note->descsz)
4046 {
4047 default:
4048 return FALSE;
4049
4050 case 224: /* S/390 Linux. */
4051 /* pr_cursig */
4052 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
4053
4054 /* pr_pid */
4055 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
4056
4057 /* pr_reg */
4058 offset = 72;
4059 size = 144;
4060 break;
4061 }
4062
4063 /* Make a ".reg/999" section. */
4064 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
4065 size, note->descpos + offset);
4066 }
4067
4068 static bfd_boolean
4069 elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
4070 {
4071 switch (note->descsz)
4072 {
4073 default:
4074 return FALSE;
4075
4076 case 124: /* sizeof(struct elf_prpsinfo) on s390 */
4077 elf_tdata (abfd)->core->pid
4078 = bfd_get_32 (abfd, note->descdata + 12);
4079 elf_tdata (abfd)->core->program
4080 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
4081 elf_tdata (abfd)->core->command
4082 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
4083 break;
4084 }
4085
4086 /* Note that for some reason, a spurious space is tacked
4087 onto the end of the args in some (at least one anyway)
4088 implementations, so strip it off if it exists. */
4089
4090 {
4091 char *command = elf_tdata (abfd)->core->command;
4092 int n = strlen (command);
4093
4094 if (0 < n && command[n - 1] == ' ')
4095 command[n - 1] = '\0';
4096 }
4097
4098 return TRUE;
4099 }
4100
4101 static char *
4102 elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
4103 int note_type, ...)
4104 {
4105 va_list ap;
4106
4107 switch (note_type)
4108 {
4109 default:
4110 return NULL;
4111
4112 case NT_PRPSINFO:
4113 {
4114 char data[124] = { 0 };
4115 const char *fname, *psargs;
4116
4117 va_start (ap, note_type);
4118 fname = va_arg (ap, const char *);
4119 psargs = va_arg (ap, const char *);
4120 va_end (ap);
4121
4122 strncpy (data + 28, fname, 16);
4123 strncpy (data + 44, psargs, 80);
4124 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
4125 &data, sizeof (data));
4126 }
4127
4128 case NT_PRSTATUS:
4129 {
4130 char data[224] = { 0 };
4131 long pid;
4132 int cursig;
4133 const void *gregs;
4134
4135 va_start (ap, note_type);
4136 pid = va_arg (ap, long);
4137 cursig = va_arg (ap, int);
4138 gregs = va_arg (ap, const void *);
4139 va_end (ap);
4140
4141 bfd_put_16 (abfd, cursig, data + 12);
4142 bfd_put_32 (abfd, pid, data + 24);
4143 memcpy (data + 72, gregs, 144);
4144 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
4145 &data, sizeof (data));
4146 }
4147 }
4148 /* NOTREACHED */
4149 }
4150 \f
4151 /* Return address for Ith PLT stub in section PLT, for relocation REL
4152 or (bfd_vma) -1 if it should not be included. */
4153
4154 static bfd_vma
4155 elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
4156 const arelent *rel ATTRIBUTE_UNUSED)
4157 {
4158 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
4159 }
4160
4161 /* Merge backend specific data from an object file to the output
4162 object file when linking. */
4163
4164 static bfd_boolean
4165 elf32_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4166 {
4167 bfd *obfd = info->output_bfd;
4168
4169 if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
4170 return TRUE;
4171
4172 if (!elf_s390_merge_obj_attributes (ibfd, info))
4173 return FALSE;
4174
4175 elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
4176 return TRUE;
4177 }
4178
4179
4180 #define TARGET_BIG_SYM s390_elf32_vec
4181 #define TARGET_BIG_NAME "elf32-s390"
4182 #define ELF_ARCH bfd_arch_s390
4183 #define ELF_TARGET_ID S390_ELF_DATA
4184 #define ELF_MACHINE_CODE EM_S390
4185 #define ELF_MACHINE_ALT1 EM_S390_OLD
4186 #define ELF_MAXPAGESIZE 0x1000
4187
4188 #define elf_backend_can_gc_sections 1
4189 #define elf_backend_can_refcount 1
4190 #define elf_backend_want_got_plt 1
4191 #define elf_backend_plt_readonly 1
4192 #define elf_backend_want_plt_sym 0
4193 #define elf_backend_got_header_size 12
4194 #define elf_backend_want_dynrelro 1
4195 #define elf_backend_rela_normal 1
4196
4197 #define elf_info_to_howto elf_s390_info_to_howto
4198
4199 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
4200 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
4201 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
4202 #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
4203
4204 #define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
4205
4206 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
4207 #define elf_backend_check_relocs elf_s390_check_relocs
4208 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
4209 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
4210 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4211 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
4212 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
4213 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
4214 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
4215 #define elf_backend_relocate_section elf_s390_relocate_section
4216 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
4217 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4218 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
4219 #define elf_backend_grok_psinfo elf_s390_grok_psinfo
4220 #define elf_backend_write_core_note elf_s390_write_core_note
4221 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
4222 #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
4223 #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
4224
4225 #define bfd_elf32_mkobject elf_s390_mkobject
4226 #define elf_backend_object_p elf_s390_object_p
4227
4228 #define elf_backend_linux_prpsinfo32_ugid16 TRUE
4229
4230 #include "elf32-target.h"
GDB Binutils - Deliverables
This page took 0.115047 seconds and 5 git commands to generate.