projects / deliverable / binutils-gdb.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Pass link_info to _bfd_merge_private_bfd_data
[deliverable/binutils-gdb.git] / bfd / elf32-s390.c
1 /* IBM S/390-specific support for 32-bit ELF
2 Copyright (C) 2000-2016 Free Software Foundation, Inc.
3 Contributed by Carl B. Pedersen and Martin Schwidefsky.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
20 02110-1301, USA. */
21
22 #include "sysdep.h"
23 #include "bfd.h"
24 #include "bfdlink.h"
25 #include "libbfd.h"
26 #include "elf-bfd.h"
27 #include "elf/s390.h"
28 #include <stdarg.h>
29
30 static bfd_reloc_status_type
31 s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
32 asection *, bfd *, char **);
33 static bfd_reloc_status_type
34 s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
35 asection *, bfd *, char **);
36
37 /* The relocation "howto" table. */
38
39 static reloc_howto_type elf_howto_table[] =
40 {
41 HOWTO (R_390_NONE, /* type */
42 0, /* rightshift */
43 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
44 0, /* bitsize */
45 FALSE, /* pc_relative */
46 0, /* bitpos */
47 complain_overflow_dont, /* complain_on_overflow */
48 bfd_elf_generic_reloc, /* special_function */
49 "R_390_NONE", /* name */
50 FALSE, /* partial_inplace */
51 0, /* src_mask */
52 0, /* dst_mask */
53 FALSE), /* pcrel_offset */
54
55 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
56 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
57 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
58 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
59 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
60 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
61 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
62 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
63 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
64 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
65 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
66 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
67 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
68 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
69 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
70 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
71 HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
72 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
73 HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
74 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
75 HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
76 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
77 HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
78 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
79 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
80 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
81 HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
82 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
83 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
84 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
85 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
86 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
87 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
88 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
89 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
90 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
91 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
92 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
93 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
94 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
95 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
96 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
97 EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
98 EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
99 EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
100 EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
101 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
102 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
103 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
104 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
105 EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
106 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
107 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
108 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
109 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
110 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
111 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
112 EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
113 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
114 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE),
115 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
116 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
117 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
118 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
119 EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
120 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
121 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
122 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
123 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
124 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
125 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
126 HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE),
128 EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */
129 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
130 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
131 HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
132 bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE),
133 EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */
134 HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
135 bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE),
136 EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */
137 HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE),
139 EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */
140 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
141 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE),
142 HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
143 bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE),
144 EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */
145 HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE),
147 EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */
148 HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE),
150 HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE),
152 HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
153 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE),
154 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
155 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
156 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
157 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
158 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
159 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
160 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
161 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
162 HOWTO(R_390_IRELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, 0xffffffff, FALSE),
164 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
165 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
166 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
167 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
168 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
169 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
170 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
171 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
172 };
173
174 /* GNU extension to record C++ vtable hierarchy. */
175 static reloc_howto_type elf32_s390_vtinherit_howto =
176 HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
177 static reloc_howto_type elf32_s390_vtentry_howto =
178 HOWTO (R_390_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
179
180 static reloc_howto_type *
181 elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
182 bfd_reloc_code_real_type code)
183 {
184 switch (code)
185 {
186 case BFD_RELOC_NONE:
187 return &elf_howto_table[(int) R_390_NONE];
188 case BFD_RELOC_8:
189 return &elf_howto_table[(int) R_390_8];
190 case BFD_RELOC_390_12:
191 return &elf_howto_table[(int) R_390_12];
192 case BFD_RELOC_16:
193 return &elf_howto_table[(int) R_390_16];
194 case BFD_RELOC_32:
195 return &elf_howto_table[(int) R_390_32];
196 case BFD_RELOC_CTOR:
197 return &elf_howto_table[(int) R_390_32];
198 case BFD_RELOC_32_PCREL:
199 return &elf_howto_table[(int) R_390_PC32];
200 case BFD_RELOC_390_GOT12:
201 return &elf_howto_table[(int) R_390_GOT12];
202 case BFD_RELOC_32_GOT_PCREL:
203 return &elf_howto_table[(int) R_390_GOT32];
204 case BFD_RELOC_390_PLT32:
205 return &elf_howto_table[(int) R_390_PLT32];
206 case BFD_RELOC_390_COPY:
207 return &elf_howto_table[(int) R_390_COPY];
208 case BFD_RELOC_390_GLOB_DAT:
209 return &elf_howto_table[(int) R_390_GLOB_DAT];
210 case BFD_RELOC_390_JMP_SLOT:
211 return &elf_howto_table[(int) R_390_JMP_SLOT];
212 case BFD_RELOC_390_RELATIVE:
213 return &elf_howto_table[(int) R_390_RELATIVE];
214 case BFD_RELOC_32_GOTOFF:
215 return &elf_howto_table[(int) R_390_GOTOFF32];
216 case BFD_RELOC_390_GOTPC:
217 return &elf_howto_table[(int) R_390_GOTPC];
218 case BFD_RELOC_390_GOT16:
219 return &elf_howto_table[(int) R_390_GOT16];
220 case BFD_RELOC_16_PCREL:
221 return &elf_howto_table[(int) R_390_PC16];
222 case BFD_RELOC_390_PC12DBL:
223 return &elf_howto_table[(int) R_390_PC12DBL];
224 case BFD_RELOC_390_PLT12DBL:
225 return &elf_howto_table[(int) R_390_PLT12DBL];
226 case BFD_RELOC_390_PC16DBL:
227 return &elf_howto_table[(int) R_390_PC16DBL];
228 case BFD_RELOC_390_PLT16DBL:
229 return &elf_howto_table[(int) R_390_PLT16DBL];
230 case BFD_RELOC_390_PC24DBL:
231 return &elf_howto_table[(int) R_390_PC24DBL];
232 case BFD_RELOC_390_PLT24DBL:
233 return &elf_howto_table[(int) R_390_PLT24DBL];
234 case BFD_RELOC_390_PC32DBL:
235 return &elf_howto_table[(int) R_390_PC32DBL];
236 case BFD_RELOC_390_PLT32DBL:
237 return &elf_howto_table[(int) R_390_PLT32DBL];
238 case BFD_RELOC_390_GOTPCDBL:
239 return &elf_howto_table[(int) R_390_GOTPCDBL];
240 case BFD_RELOC_390_GOTENT:
241 return &elf_howto_table[(int) R_390_GOTENT];
242 case BFD_RELOC_16_GOTOFF:
243 return &elf_howto_table[(int) R_390_GOTOFF16];
244 case BFD_RELOC_390_GOTPLT12:
245 return &elf_howto_table[(int) R_390_GOTPLT12];
246 case BFD_RELOC_390_GOTPLT16:
247 return &elf_howto_table[(int) R_390_GOTPLT16];
248 case BFD_RELOC_390_GOTPLT32:
249 return &elf_howto_table[(int) R_390_GOTPLT32];
250 case BFD_RELOC_390_GOTPLTENT:
251 return &elf_howto_table[(int) R_390_GOTPLTENT];
252 case BFD_RELOC_390_PLTOFF16:
253 return &elf_howto_table[(int) R_390_PLTOFF16];
254 case BFD_RELOC_390_PLTOFF32:
255 return &elf_howto_table[(int) R_390_PLTOFF32];
256 case BFD_RELOC_390_TLS_LOAD:
257 return &elf_howto_table[(int) R_390_TLS_LOAD];
258 case BFD_RELOC_390_TLS_GDCALL:
259 return &elf_howto_table[(int) R_390_TLS_GDCALL];
260 case BFD_RELOC_390_TLS_LDCALL:
261 return &elf_howto_table[(int) R_390_TLS_LDCALL];
262 case BFD_RELOC_390_TLS_GD32:
263 return &elf_howto_table[(int) R_390_TLS_GD32];
264 case BFD_RELOC_390_TLS_GOTIE12:
265 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
266 case BFD_RELOC_390_TLS_GOTIE32:
267 return &elf_howto_table[(int) R_390_TLS_GOTIE32];
268 case BFD_RELOC_390_TLS_LDM32:
269 return &elf_howto_table[(int) R_390_TLS_LDM32];
270 case BFD_RELOC_390_TLS_IE32:
271 return &elf_howto_table[(int) R_390_TLS_IE32];
272 case BFD_RELOC_390_TLS_IEENT:
273 return &elf_howto_table[(int) R_390_TLS_IEENT];
274 case BFD_RELOC_390_TLS_LE32:
275 return &elf_howto_table[(int) R_390_TLS_LE32];
276 case BFD_RELOC_390_TLS_LDO32:
277 return &elf_howto_table[(int) R_390_TLS_LDO32];
278 case BFD_RELOC_390_TLS_DTPMOD:
279 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
280 case BFD_RELOC_390_TLS_DTPOFF:
281 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
282 case BFD_RELOC_390_TLS_TPOFF:
283 return &elf_howto_table[(int) R_390_TLS_TPOFF];
284 case BFD_RELOC_390_20:
285 return &elf_howto_table[(int) R_390_20];
286 case BFD_RELOC_390_GOT20:
287 return &elf_howto_table[(int) R_390_GOT20];
288 case BFD_RELOC_390_GOTPLT20:
289 return &elf_howto_table[(int) R_390_GOTPLT20];
290 case BFD_RELOC_390_TLS_GOTIE20:
291 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
292 case BFD_RELOC_390_IRELATIVE:
293 return &elf_howto_table[(int) R_390_IRELATIVE];
294 case BFD_RELOC_VTABLE_INHERIT:
295 return &elf32_s390_vtinherit_howto;
296 case BFD_RELOC_VTABLE_ENTRY:
297 return &elf32_s390_vtentry_howto;
298 default:
299 break;
300 }
301 return 0;
302 }
303
304 static reloc_howto_type *
305 elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
306 const char *r_name)
307 {
308 unsigned int i;
309
310 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
311 if (elf_howto_table[i].name != NULL
312 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
313 return &elf_howto_table[i];
314
315 if (strcasecmp (elf32_s390_vtinherit_howto.name, r_name) == 0)
316 return &elf32_s390_vtinherit_howto;
317 if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0)
318 return &elf32_s390_vtentry_howto;
319
320 return NULL;
321 }
322
323 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
324 and elf32-s390.c has its own copy. */
325
326 static void
327 elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
328 arelent *cache_ptr,
329 Elf_Internal_Rela *dst)
330 {
331 unsigned int r_type = ELF32_R_TYPE(dst->r_info);
332 switch (r_type)
333 {
334 case R_390_GNU_VTINHERIT:
335 cache_ptr->howto = &elf32_s390_vtinherit_howto;
336 break;
337
338 case R_390_GNU_VTENTRY:
339 cache_ptr->howto = &elf32_s390_vtentry_howto;
340 break;
341
342 default:
343 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
344 {
345 _bfd_error_handler (_("%B: invalid relocation type %d"),
346 abfd, (int) r_type);
347 r_type = R_390_NONE;
348 }
349 cache_ptr->howto = &elf_howto_table[r_type];
350 }
351 }
352
353 /* A relocation function which doesn't do anything. */
354 static bfd_reloc_status_type
355 s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
356 arelent *reloc_entry,
357 asymbol *symbol ATTRIBUTE_UNUSED,
358 void * data ATTRIBUTE_UNUSED,
359 asection *input_section,
360 bfd *output_bfd,
361 char **error_message ATTRIBUTE_UNUSED)
362 {
363 if (output_bfd)
364 reloc_entry->address += input_section->output_offset;
365 return bfd_reloc_ok;
366 }
367
368 /* Handle the large displacement relocs. */
369 static bfd_reloc_status_type
370 s390_elf_ldisp_reloc (bfd *abfd ATTRIBUTE_UNUSED,
371 arelent *reloc_entry,
372 asymbol *symbol,
373 void * data ATTRIBUTE_UNUSED,
374 asection *input_section,
375 bfd *output_bfd,
376 char **error_message ATTRIBUTE_UNUSED)
377 {
378 reloc_howto_type *howto = reloc_entry->howto;
379 bfd_vma relocation;
380 bfd_vma insn;
381
382 if (output_bfd != (bfd *) NULL
383 && (symbol->flags & BSF_SECTION_SYM) == 0
384 && (! howto->partial_inplace
385 || reloc_entry->addend == 0))
386 {
387 reloc_entry->address += input_section->output_offset;
388 return bfd_reloc_ok;
389 }
390
391 if (output_bfd != NULL)
392 return bfd_reloc_continue;
393
394 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
395 return bfd_reloc_outofrange;
396
397 relocation = (symbol->value
398 + symbol->section->output_section->vma
399 + symbol->section->output_offset);
400 relocation += reloc_entry->addend;
401 if (howto->pc_relative)
402 {
403 relocation -= (input_section->output_section->vma
404 + input_section->output_offset);
405 relocation -= reloc_entry->address;
406 }
407
408 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
409 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
410 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
411
412 if ((bfd_signed_vma) relocation < - 0x80000
413 || (bfd_signed_vma) relocation > 0x7ffff)
414 return bfd_reloc_overflow;
415 else
416 return bfd_reloc_ok;
417 }
418
419 static bfd_boolean
420 elf_s390_is_local_label_name (bfd *abfd, const char *name)
421 {
422 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
423 return TRUE;
424
425 return _bfd_elf_is_local_label_name (abfd, name);
426 }
427
428 /* Functions for the 390 ELF linker. */
429
430 /* The name of the dynamic interpreter. This is put in the .interp
431 section. */
432
433 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
434
435 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
436 copying dynamic variables from a shared lib into an app's dynbss
437 section, and instead use a dynamic relocation to point into the
438 shared lib. */
439 #define ELIMINATE_COPY_RELOCS 1
440
441 /* The size in bytes of the first entry in the procedure linkage table. */
442 #define PLT_FIRST_ENTRY_SIZE 32
443 /* The size in bytes of an entry in the procedure linkage table. */
444 #define PLT_ENTRY_SIZE 32
445
446 #define GOT_ENTRY_SIZE 4
447
448 #define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela)
449
450 /* The first three entries in a procedure linkage table are reserved,
451 and the initial contents are unimportant (we zero them out).
452 Subsequent entries look like this. See the SVR4 ABI 386
453 supplement to see how this works. */
454
455 /* For the s390, simple addr offset can only be 0 - 4096.
456 To use the full 2 GB address space, several instructions
457 are needed to load an address in a register and execute
458 a branch( or just saving the address)
459
460 Furthermore, only r 0 and 1 are free to use!!! */
461
462 /* The first 3 words in the GOT are then reserved.
463 Word 0 is the address of the dynamic table.
464 Word 1 is a pointer to a structure describing the object
465 Word 2 is used to point to the loader entry address.
466
467 The code for position independent PLT entries looks like this:
468
469 r12 holds addr of the current GOT at entry to the PLT
470
471 The GOT holds the address in the PLT to be executed.
472 The loader then gets:
473 24(15) = Pointer to the structure describing the object.
474 28(15) = Offset into rela.plt
475
476 The loader must then find the module where the function is
477 and insert the address in the GOT.
478
479 Note: 390 can only address +- 64 K relative.
480 We check if offset > 65536, then make a relative branch -64xxx
481 back to a previous defined branch
482
483 PLT1: BASR 1,0 # 2 bytes
484 L 1,22(1) # 4 bytes Load offset in GOT in r 1
485 L 1,(1,12) # 4 bytes Load address from GOT in r1
486 BCR 15,1 # 2 bytes Jump to address
487 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
488 L 1,14(1) # 4 bytes Load offset in symol table in r1
489 BRC 15,-x # 4 bytes Jump to start of PLT
490 .word 0 # 2 bytes filler
491 .long ? # 4 bytes offset in GOT
492 .long ? # 4 bytes offset into rela.plt
493
494 This was the general case. There are two additional, optimizes PLT
495 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
496 First the one for GOT offsets < 4096:
497
498 PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
499 BCR 15,1 # 2 bytes Jump to address
500 .word 0,0,0 # 6 bytes filler
501 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
502 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
503 BRC 15,-x # 4 bytes Jump to start of PLT
504 .word 0,0,0 # 6 bytes filler
505 .long ? # 4 bytes offset into rela.plt
506
507 Second the one for GOT offsets < 32768:
508
509 PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
510 L 1,(1,12) # 4 bytes Load address from GOT to r1
511 BCR 15,1 # 2 bytes Jump to address
512 .word 0 # 2 bytes filler
513 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
514 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
515 BRC 15,-x # 4 bytes Jump to start of PLT
516 .word 0,0,0 # 6 bytes filler
517 .long ? # 4 bytes offset into rela.plt
518
519 Total = 32 bytes per PLT entry
520
521 The code for static build PLT entries looks like this:
522
523 PLT1: BASR 1,0 # 2 bytes
524 L 1,22(1) # 4 bytes Load address of GOT entry
525 L 1,0(0,1) # 4 bytes Load address from GOT in r1
526 BCR 15,1 # 2 bytes Jump to address
527 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
528 L 1,14(1) # 4 bytes Load offset in symbol table in r1
529 BRC 15,-x # 4 bytes Jump to start of PLT
530 .word 0 # 2 bytes filler
531 .long ? # 4 bytes address of GOT entry
532 .long ? # 4 bytes offset into rela.plt */
533
534 static const bfd_byte elf_s390_plt_entry[PLT_ENTRY_SIZE] =
535 {
536 0x0d, 0x10, /* basr %r1,%r0 */
537 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
538 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */
539 0x07, 0xf1, /* br %r1 */
540 0x0d, 0x10, /* basr %r1,%r0 */
541 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
542 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
543 0x00, 0x00, /* padding */
544 0x00, 0x00, 0x00, 0x00, /* GOT offset */
545 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
546 };
547
548 /* Generic PLT pic entry. */
549 static const bfd_byte elf_s390_plt_pic_entry[PLT_ENTRY_SIZE] =
550 {
551 0x0d, 0x10, /* basr %r1,%r0 */
552 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
553 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
554 0x07, 0xf1, /* br %r1 */
555 0x0d, 0x10, /* basr %r1,%r0 */
556 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
557 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
558 0x00, 0x00, /* padding */
559 0x00, 0x00, 0x00, 0x00, /* GOT offset */
560 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
561 };
562
563 /* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced
564 when generating the PLT slot with the GOT offset. */
565 static const bfd_byte elf_s390_plt_pic12_entry[PLT_ENTRY_SIZE] =
566 {
567 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */
568 0x07, 0xf1, /* br %r1 */
569 0x00, 0x00, 0x00, 0x00, /* padding */
570 0x00, 0x00,
571 0x0d, 0x10, /* basr %r1,%r0 */
572 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
573 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
574 0x00, 0x00, 0x00, 0x00,
575 0x00, 0x00, 0x00, 0x00
576 };
577
578 /* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced
579 when generating the PLT slot with the GOT offset. */
580 static const bfd_byte elf_s390_plt_pic16_entry[PLT_ENTRY_SIZE] =
581 {
582 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */
583 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
584 0x07, 0xf1, /* br %r1 */
585 0x00, 0x00,
586 0x0d, 0x10, /* basr %r1,%r0 */
587 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
588 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
589 0x00, 0x00, 0x00, 0x00,
590 0x00, 0x00, 0x00, 0x00,
591 0x00, 0x00
592 };
593
594 /* The first PLT entry pushes the offset into the rela.plt
595 from R1 onto the stack at 8(15) and the loader object info
596 at 12(15), loads the loader address in R1 and jumps to it. */
597
598 /* The first entry in the PLT for PIC code:
599
600 PLT0:
601 ST 1,28(15) # R1 has offset into rela.plt
602 L 1,4(12) # Get loader ino(object struct address)
603 ST 1,24(15) # Store address
604 L 1,8(12) # Entry address of loader in R1
605 BR 1 # Jump to loader
606
607 The first entry in the PLT for static code:
608
609 PLT0:
610 ST 1,28(15) # R1 has offset into rela.plt
611 BASR 1,0
612 L 1,18(0,1) # Get address of GOT
613 MVC 24(4,15),4(1) # Move loader ino to stack
614 L 1,8(1) # Get address of loader
615 BR 1 # Jump to loader
616 .word 0 # filler
617 .long got # address of GOT */
618
619 static const bfd_byte elf_s390_plt_first_entry[PLT_FIRST_ENTRY_SIZE] =
620 {
621 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
622 0x0d, 0x10, /* basr %r1,%r0 */
623 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */
624 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */
625 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */
626 0x07, 0xf1, /* br %r1 */
627 0x00, 0x00, 0x00, 0x00,
628 0x00, 0x00, 0x00, 0x00,
629 0x00, 0x00
630 };
631
632 static const bfd_byte elf_s390_plt_pic_first_entry[PLT_FIRST_ENTRY_SIZE] =
633 {
634 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
635 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */
636 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */
637 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */
638 0x07, 0xf1, /* br %r1 */
639 0x00, 0x00, 0x00, 0x00,
640 0x00, 0x00, 0x00, 0x00,
641 0x00, 0x00, 0x00, 0x00,
642 0x00, 0x00
643 };
644
645
646 /* s390 ELF linker hash entry. */
647
648 struct elf_s390_link_hash_entry
649 {
650 struct elf_link_hash_entry elf;
651
652 /* Track dynamic relocs copied for this symbol. */
653 struct elf_dyn_relocs *dyn_relocs;
654
655 /* Number of GOTPLT references for a function. */
656 bfd_signed_vma gotplt_refcount;
657
658 #define GOT_UNKNOWN 0
659 #define GOT_NORMAL 1
660 #define GOT_TLS_GD 2
661 #define GOT_TLS_IE 3
662 #define GOT_TLS_IE_NLT 4
663 unsigned char tls_type;
664
665 /* For pointer equality reasons we might need to change the symbol
666 type from STT_GNU_IFUNC to STT_FUNC together with its value and
667 section entry. So after alloc_dynrelocs only these values should
668 be used. In order to check whether a symbol is IFUNC use
669 s390_is_ifunc_symbol_p. */
670 bfd_vma ifunc_resolver_address;
671 asection *ifunc_resolver_section;
672 };
673
674 #define elf_s390_hash_entry(ent) \
675 ((struct elf_s390_link_hash_entry *)(ent))
676
677 /* This structure represents an entry in the local PLT list needed for
678 local IFUNC symbols. */
679 struct plt_entry
680 {
681 /* The section of the local symbol.
682 Set in relocate_section and used in finish_dynamic_sections. */
683 asection *sec;
684
685 union
686 {
687 bfd_signed_vma refcount;
688 bfd_vma offset;
689 } plt;
690 };
691
692 /* NOTE: Keep this structure in sync with
693 the one declared in elf64-s390.c. */
694 struct elf_s390_obj_tdata
695 {
696 struct elf_obj_tdata root;
697
698 /* A local PLT is needed for ifunc symbols. */
699 struct plt_entry *local_plt;
700
701 /* TLS type for each local got entry. */
702 char *local_got_tls_type;
703 };
704
705 #define elf_s390_tdata(abfd) \
706 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
707
708 #define elf_s390_local_plt(abfd) \
709 (elf_s390_tdata (abfd)->local_plt)
710
711 #define elf_s390_local_got_tls_type(abfd) \
712 (elf_s390_tdata (abfd)->local_got_tls_type)
713
714 #define is_s390_elf(bfd) \
715 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
716 && elf_tdata (bfd) != NULL \
717 && elf_object_id (bfd) == S390_ELF_DATA)
718
719 static bfd_boolean
720 elf_s390_mkobject (bfd *abfd)
721 {
722 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
723 S390_ELF_DATA);
724 }
725
726 static bfd_boolean
727 elf_s390_object_p (bfd *abfd)
728 {
729 /* Set the right machine number for an s390 elf32 file. */
730 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
731 }
732
733 /* s390 ELF linker hash table. */
734
735 struct elf_s390_link_hash_table
736 {
737 struct elf_link_hash_table elf;
738
739 /* Short-cuts to get to dynamic linker sections. */
740 asection *sdynbss;
741 asection *srelbss;
742 asection *irelifunc;
743
744 union
745 {
746 bfd_signed_vma refcount;
747 bfd_vma offset;
748 } tls_ldm_got;
749
750 /* Small local sym cache. */
751 struct sym_cache sym_cache;
752 };
753
754 /* Get the s390 ELF linker hash table from a link_info structure. */
755
756 #define elf_s390_hash_table(p) \
757 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
758 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
759
760 #undef ELF64
761 #include "elf-s390-common.c"
762
763 /* Create an entry in an s390 ELF linker hash table. */
764
765 static struct bfd_hash_entry *
766 link_hash_newfunc (struct bfd_hash_entry *entry,
767 struct bfd_hash_table *table,
768 const char *string)
769 {
770 /* Allocate the structure if it has not already been allocated by a
771 subclass. */
772 if (entry == NULL)
773 {
774 entry = bfd_hash_allocate (table,
775 sizeof (struct elf_s390_link_hash_entry));
776 if (entry == NULL)
777 return entry;
778 }
779
780 /* Call the allocation method of the superclass. */
781 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
782 if (entry != NULL)
783 {
784 struct elf_s390_link_hash_entry *eh;
785
786 eh = (struct elf_s390_link_hash_entry *) entry;
787 eh->dyn_relocs = NULL;
788 eh->gotplt_refcount = 0;
789 eh->tls_type = GOT_UNKNOWN;
790 eh->ifunc_resolver_address = 0;
791 eh->ifunc_resolver_section = NULL;
792 }
793
794 return entry;
795 }
796
797 /* Create an s390 ELF linker hash table. */
798
799 static struct bfd_link_hash_table *
800 elf_s390_link_hash_table_create (bfd *abfd)
801 {
802 struct elf_s390_link_hash_table *ret;
803 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
804
805 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
806 if (ret == NULL)
807 return NULL;
808
809 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
810 sizeof (struct elf_s390_link_hash_entry),
811 S390_ELF_DATA))
812 {
813 free (ret);
814 return NULL;
815 }
816
817 return &ret->elf.root;
818 }
819
820 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
821 shortcuts to them in our hash table. */
822
823 static bfd_boolean
824 create_got_section (bfd *dynobj, struct bfd_link_info *info)
825 {
826 struct elf_s390_link_hash_table *htab;
827
828 if (! _bfd_elf_create_got_section (dynobj, info))
829 return FALSE;
830
831 htab = elf_s390_hash_table (info);
832 htab->elf.sgot = bfd_get_linker_section (dynobj, ".got");
833 htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
834 htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got");
835 if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot)
836 abort ();
837
838 return TRUE;
839 }
840
841 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
842 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
843 hash table. */
844
845 static bfd_boolean
846 elf_s390_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
847 {
848 struct elf_s390_link_hash_table *htab;
849
850 htab = elf_s390_hash_table (info);
851 if (!htab->elf.sgot && !create_got_section (dynobj, info))
852 return FALSE;
853
854 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
855 return FALSE;
856
857 htab->elf.splt = bfd_get_linker_section (dynobj, ".plt");
858 htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt");
859 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
860 if (!bfd_link_pic (info))
861 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
862
863 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
864 || (!bfd_link_pic (info) && !htab->srelbss))
865 abort ();
866
867 return TRUE;
868 }
869
870 /* Copy the extra info we tack onto an elf_link_hash_entry. */
871
872 static void
873 elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
874 struct elf_link_hash_entry *dir,
875 struct elf_link_hash_entry *ind)
876 {
877 struct elf_s390_link_hash_entry *edir, *eind;
878
879 edir = (struct elf_s390_link_hash_entry *) dir;
880 eind = (struct elf_s390_link_hash_entry *) ind;
881
882 if (eind->dyn_relocs != NULL)
883 {
884 if (edir->dyn_relocs != NULL)
885 {
886 struct elf_dyn_relocs **pp;
887 struct elf_dyn_relocs *p;
888
889 /* Add reloc counts against the indirect sym to the direct sym
890 list. Merge any entries against the same section. */
891 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
892 {
893 struct elf_dyn_relocs *q;
894
895 for (q = edir->dyn_relocs; q != NULL; q = q->next)
896 if (q->sec == p->sec)
897 {
898 q->pc_count += p->pc_count;
899 q->count += p->count;
900 *pp = p->next;
901 break;
902 }
903 if (q == NULL)
904 pp = &p->next;
905 }
906 *pp = edir->dyn_relocs;
907 }
908
909 edir->dyn_relocs = eind->dyn_relocs;
910 eind->dyn_relocs = NULL;
911 }
912
913 if (ind->root.type == bfd_link_hash_indirect
914 && dir->got.refcount <= 0)
915 {
916 edir->tls_type = eind->tls_type;
917 eind->tls_type = GOT_UNKNOWN;
918 }
919
920 if (ELIMINATE_COPY_RELOCS
921 && ind->root.type != bfd_link_hash_indirect
922 && dir->dynamic_adjusted)
923 {
924 /* If called to transfer flags for a weakdef during processing
925 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
926 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
927 dir->ref_dynamic |= ind->ref_dynamic;
928 dir->ref_regular |= ind->ref_regular;
929 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
930 dir->needs_plt |= ind->needs_plt;
931 }
932 else
933 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
934 }
935
936 static int
937 elf_s390_tls_transition (struct bfd_link_info *info,
938 int r_type,
939 int is_local)
940 {
941 if (bfd_link_pic (info))
942 return r_type;
943
944 switch (r_type)
945 {
946 case R_390_TLS_GD32:
947 case R_390_TLS_IE32:
948 if (is_local)
949 return R_390_TLS_LE32;
950 return R_390_TLS_IE32;
951 case R_390_TLS_GOTIE32:
952 if (is_local)
953 return R_390_TLS_LE32;
954 return R_390_TLS_GOTIE32;
955 case R_390_TLS_LDM32:
956 return R_390_TLS_LE32;
957 }
958
959 return r_type;
960 }
961
962 /* Look through the relocs for a section during the first phase, and
963 allocate space in the global offset table or procedure linkage
964 table. */
965
966 static bfd_boolean
967 elf_s390_check_relocs (bfd *abfd,
968 struct bfd_link_info *info,
969 asection *sec,
970 const Elf_Internal_Rela *relocs)
971 {
972 struct elf_s390_link_hash_table *htab;
973 Elf_Internal_Shdr *symtab_hdr;
974 struct elf_link_hash_entry **sym_hashes;
975 const Elf_Internal_Rela *rel;
976 const Elf_Internal_Rela *rel_end;
977 asection *sreloc;
978 bfd_signed_vma *local_got_refcounts;
979 int tls_type, old_tls_type;
980 Elf_Internal_Sym *isym;
981
982 if (bfd_link_relocatable (info))
983 return TRUE;
984
985 BFD_ASSERT (is_s390_elf (abfd));
986
987 htab = elf_s390_hash_table (info);
988 symtab_hdr = &elf_symtab_hdr (abfd);
989 sym_hashes = elf_sym_hashes (abfd);
990 local_got_refcounts = elf_local_got_refcounts (abfd);
991
992 sreloc = NULL;
993
994 rel_end = relocs + sec->reloc_count;
995 for (rel = relocs; rel < rel_end; rel++)
996 {
997 unsigned int r_type;
998 unsigned long r_symndx;
999 struct elf_link_hash_entry *h;
1000
1001 r_symndx = ELF32_R_SYM (rel->r_info);
1002
1003 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1004 {
1005 _bfd_error_handler (_("%B: bad symbol index: %d"),
1006 abfd, r_symndx);
1007 return FALSE;
1008 }
1009
1010 if (r_symndx < symtab_hdr->sh_info)
1011 {
1012 /* A local symbol. */
1013 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1014 abfd, r_symndx);
1015 if (isym == NULL)
1016 return FALSE;
1017
1018 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1019 {
1020 struct plt_entry *plt;
1021
1022 if (htab->elf.dynobj == NULL)
1023 htab->elf.dynobj = abfd;
1024
1025 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1026 return FALSE;
1027
1028 if (local_got_refcounts == NULL)
1029 {
1030 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
1031 return FALSE;
1032 local_got_refcounts = elf_local_got_refcounts (abfd);
1033 }
1034 plt = elf_s390_local_plt (abfd);
1035 plt[r_symndx].plt.refcount++;
1036 }
1037 h = NULL;
1038 }
1039 else
1040 {
1041 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1042 while (h->root.type == bfd_link_hash_indirect
1043 || h->root.type == bfd_link_hash_warning)
1044 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1045
1046 /* PR15323, ref flags aren't set for references in the same
1047 object. */
1048 h->root.non_ir_ref = 1;
1049 }
1050
1051 /* Create got section and local_got_refcounts array if they
1052 are needed. */
1053 r_type = elf_s390_tls_transition (info,
1054 ELF32_R_TYPE (rel->r_info),
1055 h == NULL);
1056 switch (r_type)
1057 {
1058 case R_390_GOT12:
1059 case R_390_GOT16:
1060 case R_390_GOT20:
1061 case R_390_GOT32:
1062 case R_390_GOTENT:
1063 case R_390_GOTPLT12:
1064 case R_390_GOTPLT16:
1065 case R_390_GOTPLT20:
1066 case R_390_GOTPLT32:
1067 case R_390_GOTPLTENT:
1068 case R_390_TLS_GD32:
1069 case R_390_TLS_GOTIE12:
1070 case R_390_TLS_GOTIE20:
1071 case R_390_TLS_GOTIE32:
1072 case R_390_TLS_IEENT:
1073 case R_390_TLS_IE32:
1074 case R_390_TLS_LDM32:
1075 if (h == NULL
1076 && local_got_refcounts == NULL)
1077 {
1078 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
1079 return FALSE;
1080 local_got_refcounts = elf_local_got_refcounts (abfd);
1081 }
1082 /* Fall through. */
1083 case R_390_GOTOFF16:
1084 case R_390_GOTOFF32:
1085 case R_390_GOTPC:
1086 case R_390_GOTPCDBL:
1087 if (htab->elf.sgot == NULL)
1088 {
1089 if (htab->elf.dynobj == NULL)
1090 htab->elf.dynobj = abfd;
1091 if (!create_got_section (htab->elf.dynobj, info))
1092 return FALSE;
1093 }
1094 }
1095
1096 if (h != NULL)
1097 {
1098 if (htab->elf.dynobj == NULL)
1099 htab->elf.dynobj = abfd;
1100 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1101 return FALSE;
1102
1103 /* Make sure an IFUNC symbol defined in a non-shared object
1104 always gets a PLT slot. */
1105 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1106 {
1107 /* The symbol is called by the dynamic loader in order
1108 to resolve the relocation. So it is in fact also
1109 referenced. */
1110 h->ref_regular = 1;
1111 h->needs_plt = 1;
1112 }
1113 }
1114 switch (r_type)
1115 {
1116 case R_390_GOTPC:
1117 case R_390_GOTPCDBL:
1118 /* These relocs do not need a GOT slot. They just load the
1119 GOT pointer itself or address something else relative to
1120 the GOT. Since the GOT pointer has been set up above we
1121 are done. */
1122 break;
1123 case R_390_GOTOFF16:
1124 case R_390_GOTOFF32:
1125 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
1126 break;
1127 /* Fall through. */
1128
1129 case R_390_PLT12DBL:
1130 case R_390_PLT16DBL:
1131 case R_390_PLT24DBL:
1132 case R_390_PLT32DBL:
1133 case R_390_PLT32:
1134 case R_390_PLTOFF16:
1135 case R_390_PLTOFF32:
1136 /* This symbol requires a procedure linkage table entry. We
1137 actually build the entry in adjust_dynamic_symbol,
1138 because this might be a case of linking PIC code which is
1139 never referenced by a dynamic object, in which case we
1140 don't need to generate a procedure linkage table entry
1141 after all. */
1142
1143 /* If this is a local symbol, we resolve it directly without
1144 creating a procedure linkage table entry. */
1145 if (h != NULL)
1146 {
1147 h->needs_plt = 1;
1148 h->plt.refcount += 1;
1149 }
1150 break;
1151
1152 case R_390_GOTPLT12:
1153 case R_390_GOTPLT16:
1154 case R_390_GOTPLT20:
1155 case R_390_GOTPLT32:
1156 case R_390_GOTPLTENT:
1157 /* This symbol requires either a procedure linkage table entry
1158 or an entry in the local got. We actually build the entry
1159 in adjust_dynamic_symbol because whether this is really a
1160 global reference can change and with it the fact if we have
1161 to create a plt entry or a local got entry. To be able to
1162 make a once global symbol a local one we have to keep track
1163 of the number of gotplt references that exist for this
1164 symbol. */
1165 if (h != NULL)
1166 {
1167 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1168 h->needs_plt = 1;
1169 h->plt.refcount += 1;
1170 }
1171 else
1172 local_got_refcounts[r_symndx] += 1;
1173 break;
1174
1175 case R_390_TLS_LDM32:
1176 htab->tls_ldm_got.refcount += 1;
1177 break;
1178
1179 case R_390_TLS_IE32:
1180 case R_390_TLS_GOTIE12:
1181 case R_390_TLS_GOTIE20:
1182 case R_390_TLS_GOTIE32:
1183 case R_390_TLS_IEENT:
1184 if (bfd_link_pic (info))
1185 info->flags |= DF_STATIC_TLS;
1186 /* Fall through. */
1187
1188 case R_390_GOT12:
1189 case R_390_GOT16:
1190 case R_390_GOT20:
1191 case R_390_GOT32:
1192 case R_390_GOTENT:
1193 case R_390_TLS_GD32:
1194 /* This symbol requires a global offset table entry. */
1195 switch (r_type)
1196 {
1197 default:
1198 case R_390_GOT12:
1199 case R_390_GOT16:
1200 case R_390_GOT20:
1201 case R_390_GOT32:
1202 case R_390_GOTENT:
1203 tls_type = GOT_NORMAL;
1204 break;
1205 case R_390_TLS_GD32:
1206 tls_type = GOT_TLS_GD;
1207 break;
1208 case R_390_TLS_IE32:
1209 case R_390_TLS_GOTIE32:
1210 tls_type = GOT_TLS_IE;
1211 break;
1212 case R_390_TLS_GOTIE12:
1213 case R_390_TLS_GOTIE20:
1214 case R_390_TLS_IEENT:
1215 tls_type = GOT_TLS_IE_NLT;
1216 break;
1217 }
1218
1219 if (h != NULL)
1220 {
1221 h->got.refcount += 1;
1222 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1223 }
1224 else
1225 {
1226 local_got_refcounts[r_symndx] += 1;
1227 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1228 }
1229 /* If a TLS symbol is accessed using IE at least once,
1230 there is no point to use dynamic model for it. */
1231 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1232 {
1233 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1234 {
1235 _bfd_error_handler
1236 (_("%B: `%s' accessed both as normal and thread local symbol"),
1237 abfd, h->root.root.string);
1238 return FALSE;
1239 }
1240 if (old_tls_type > tls_type)
1241 tls_type = old_tls_type;
1242 }
1243
1244 if (old_tls_type != tls_type)
1245 {
1246 if (h != NULL)
1247 elf_s390_hash_entry (h)->tls_type = tls_type;
1248 else
1249 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1250 }
1251
1252 if (r_type != R_390_TLS_IE32)
1253 break;
1254 /* Fall through. */
1255
1256 case R_390_TLS_LE32:
1257 /* For static linking and executables this reloc will be
1258 calculated at linktime otherwise a TLS_TPOFF runtime
1259 reloc will be generated. */
1260 if (r_type == R_390_TLS_LE32 && bfd_link_pie (info))
1261 break;
1262
1263 if (!bfd_link_pic (info))
1264 break;
1265 info->flags |= DF_STATIC_TLS;
1266 /* Fall through. */
1267
1268 case R_390_8:
1269 case R_390_16:
1270 case R_390_32:
1271 case R_390_PC16:
1272 case R_390_PC12DBL:
1273 case R_390_PC16DBL:
1274 case R_390_PC24DBL:
1275 case R_390_PC32DBL:
1276 case R_390_PC32:
1277 if (h != NULL && bfd_link_executable (info))
1278 {
1279 /* If this reloc is in a read-only section, we might
1280 need a copy reloc. We can't check reliably at this
1281 stage whether the section is read-only, as input
1282 sections have not yet been mapped to output sections.
1283 Tentatively set the flag for now, and correct in
1284 adjust_dynamic_symbol. */
1285 h->non_got_ref = 1;
1286
1287 if (!bfd_link_pic (info))
1288 {
1289 /* We may need a .plt entry if the function this reloc
1290 refers to is in a shared lib. */
1291 h->plt.refcount += 1;
1292 }
1293 }
1294
1295 /* If we are creating a shared library, and this is a reloc
1296 against a global symbol, or a non PC relative reloc
1297 against a local symbol, then we need to copy the reloc
1298 into the shared library. However, if we are linking with
1299 -Bsymbolic, we do not need to copy a reloc against a
1300 global symbol which is defined in an object we are
1301 including in the link (i.e., DEF_REGULAR is set). At
1302 this point we have not seen all the input files, so it is
1303 possible that DEF_REGULAR is not set now but will be set
1304 later (it is never cleared). In case of a weak definition,
1305 DEF_REGULAR may be cleared later by a strong definition in
1306 a shared library. We account for that possibility below by
1307 storing information in the relocs_copied field of the hash
1308 table entry. A similar situation occurs when creating
1309 shared libraries and symbol visibility changes render the
1310 symbol local.
1311
1312 If on the other hand, we are creating an executable, we
1313 may need to keep relocations for symbols satisfied by a
1314 dynamic library if we manage to avoid copy relocs for the
1315 symbol. */
1316 if ((bfd_link_pic (info)
1317 && (sec->flags & SEC_ALLOC) != 0
1318 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
1319 && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL
1320 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
1321 && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL
1322 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
1323 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1324 || (h != NULL
1325 && (! SYMBOLIC_BIND (info, h)
1326 || h->root.type == bfd_link_hash_defweak
1327 || !h->def_regular))))
1328 || (ELIMINATE_COPY_RELOCS
1329 && !bfd_link_pic (info)
1330 && (sec->flags & SEC_ALLOC) != 0
1331 && h != NULL
1332 && (h->root.type == bfd_link_hash_defweak
1333 || !h->def_regular)))
1334 {
1335 struct elf_dyn_relocs *p;
1336 struct elf_dyn_relocs **head;
1337
1338 /* We must copy these reloc types into the output file.
1339 Create a reloc section in dynobj and make room for
1340 this reloc. */
1341 if (sreloc == NULL)
1342 {
1343 if (htab->elf.dynobj == NULL)
1344 htab->elf.dynobj = abfd;
1345
1346 sreloc = _bfd_elf_make_dynamic_reloc_section
1347 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1348
1349 if (sreloc == NULL)
1350 return FALSE;
1351 }
1352
1353 /* If this is a global symbol, we count the number of
1354 relocations we need for this symbol. */
1355 if (h != NULL)
1356 {
1357 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1358 }
1359 else
1360 {
1361 /* Track dynamic relocs needed for local syms too.
1362 We really need local syms available to do this
1363 easily. Oh well. */
1364 asection *s;
1365 void *vpp;
1366
1367 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1368 abfd, r_symndx);
1369 if (isym == NULL)
1370 return FALSE;
1371
1372 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1373 if (s == NULL)
1374 s = sec;
1375
1376 vpp = &elf_section_data (s)->local_dynrel;
1377 head = (struct elf_dyn_relocs **) vpp;
1378 }
1379
1380 p = *head;
1381 if (p == NULL || p->sec != sec)
1382 {
1383 bfd_size_type amt = sizeof *p;
1384
1385 p = ((struct elf_dyn_relocs *)
1386 bfd_alloc (htab->elf.dynobj, amt));
1387 if (p == NULL)
1388 return FALSE;
1389 p->next = *head;
1390 *head = p;
1391 p->sec = sec;
1392 p->count = 0;
1393 p->pc_count = 0;
1394 }
1395
1396 p->count += 1;
1397 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
1398 || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL
1399 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
1400 || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL
1401 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
1402 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1403 p->pc_count += 1;
1404 }
1405 break;
1406
1407 /* This relocation describes the C++ object vtable hierarchy.
1408 Reconstruct it for later use during GC. */
1409 case R_390_GNU_VTINHERIT:
1410 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1411 return FALSE;
1412 break;
1413
1414 /* This relocation describes which C++ vtable entries are actually
1415 used. Record for later use during GC. */
1416 case R_390_GNU_VTENTRY:
1417 BFD_ASSERT (h != NULL);
1418 if (h != NULL
1419 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1420 return FALSE;
1421 break;
1422
1423 default:
1424 break;
1425 }
1426 }
1427
1428 return TRUE;
1429 }
1430
1431 /* Return the section that should be marked against GC for a given
1432 relocation. */
1433
1434 static asection *
1435 elf_s390_gc_mark_hook (asection *sec,
1436 struct bfd_link_info *info,
1437 Elf_Internal_Rela *rel,
1438 struct elf_link_hash_entry *h,
1439 Elf_Internal_Sym *sym)
1440 {
1441 if (h != NULL)
1442 switch (ELF32_R_TYPE (rel->r_info))
1443 {
1444 case R_390_GNU_VTINHERIT:
1445 case R_390_GNU_VTENTRY:
1446 return NULL;
1447 }
1448 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1449
1450 }
1451
1452 /* Update the got entry reference counts for the section being removed. */
1453
1454 static bfd_boolean
1455 elf_s390_gc_sweep_hook (bfd *abfd,
1456 struct bfd_link_info *info,
1457 asection *sec,
1458 const Elf_Internal_Rela *relocs)
1459 {
1460 struct elf_s390_link_hash_table *htab;
1461 Elf_Internal_Shdr *symtab_hdr;
1462 struct elf_link_hash_entry **sym_hashes;
1463 bfd_signed_vma *local_got_refcounts;
1464 const Elf_Internal_Rela *rel, *relend;
1465
1466 if (bfd_link_relocatable (info))
1467 return TRUE;
1468
1469 htab = elf_s390_hash_table (info);
1470 if (htab == NULL)
1471 return FALSE;
1472
1473 elf_section_data (sec)->local_dynrel = NULL;
1474
1475 symtab_hdr = &elf_symtab_hdr (abfd);
1476 sym_hashes = elf_sym_hashes (abfd);
1477 local_got_refcounts = elf_local_got_refcounts (abfd);
1478
1479 relend = relocs + sec->reloc_count;
1480 for (rel = relocs; rel < relend; rel++)
1481 {
1482 unsigned long r_symndx;
1483 unsigned int r_type;
1484 struct elf_link_hash_entry *h = NULL;
1485
1486 r_symndx = ELF32_R_SYM (rel->r_info);
1487 if (r_symndx >= symtab_hdr->sh_info)
1488 {
1489 struct elf_s390_link_hash_entry *eh;
1490 struct elf_dyn_relocs **pp;
1491 struct elf_dyn_relocs *p;
1492
1493 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1494 while (h->root.type == bfd_link_hash_indirect
1495 || h->root.type == bfd_link_hash_warning)
1496 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1497 eh = (struct elf_s390_link_hash_entry *) h;
1498
1499 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1500 if (p->sec == sec)
1501 {
1502 /* Everything must go for SEC. */
1503 *pp = p->next;
1504 break;
1505 }
1506 }
1507 else
1508 {
1509 Elf_Internal_Sym *isym;
1510
1511 /* A local symbol. */
1512 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1513 abfd, r_symndx);
1514 if (isym == NULL)
1515 return FALSE;
1516
1517 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1518 {
1519 struct plt_entry *plt = elf_s390_local_plt (abfd);
1520 if (plt[r_symndx].plt.refcount > 0)
1521 plt[r_symndx].plt.refcount--;
1522 }
1523 }
1524
1525 r_type = ELF32_R_TYPE (rel->r_info);
1526 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1527 switch (r_type)
1528 {
1529 case R_390_TLS_LDM32:
1530 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1531 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1532 break;
1533
1534 case R_390_GOTOFF16:
1535 case R_390_GOTOFF32:
1536 if (h != NULL && s390_is_ifunc_symbol_p (h) && h->def_regular)
1537 {
1538 h->plt.refcount--;
1539 break;
1540 }
1541
1542 case R_390_GOTPC:
1543 case R_390_GOTPCDBL:
1544 break;
1545
1546 case R_390_TLS_GD32:
1547 case R_390_TLS_IE32:
1548 case R_390_TLS_GOTIE12:
1549 case R_390_TLS_GOTIE20:
1550 case R_390_TLS_GOTIE32:
1551 case R_390_TLS_IEENT:
1552 case R_390_GOT12:
1553 case R_390_GOT16:
1554 case R_390_GOT20:
1555 case R_390_GOT32:
1556 case R_390_GOTENT:
1557 if (h != NULL)
1558 {
1559 if (h->got.refcount > 0)
1560 h->got.refcount -= 1;
1561 }
1562 else if (local_got_refcounts != NULL)
1563 {
1564 if (local_got_refcounts[r_symndx] > 0)
1565 local_got_refcounts[r_symndx] -= 1;
1566 }
1567 break;
1568
1569 case R_390_8:
1570 case R_390_12:
1571 case R_390_16:
1572 case R_390_20:
1573 case R_390_32:
1574 case R_390_PC16:
1575 case R_390_PC12DBL:
1576 case R_390_PC16DBL:
1577 case R_390_PC24DBL:
1578 case R_390_PC32DBL:
1579 case R_390_PC32:
1580 if (bfd_link_pic (info))
1581 break;
1582 /* Fall through. */
1583
1584 case R_390_PLT12DBL:
1585 case R_390_PLT16DBL:
1586 case R_390_PLT24DBL:
1587 case R_390_PLT32DBL:
1588 case R_390_PLT32:
1589 case R_390_PLTOFF16:
1590 case R_390_PLTOFF32:
1591 if (h != NULL)
1592 {
1593 if (h->plt.refcount > 0)
1594 h->plt.refcount -= 1;
1595 }
1596 break;
1597
1598 case R_390_GOTPLT12:
1599 case R_390_GOTPLT16:
1600 case R_390_GOTPLT20:
1601 case R_390_GOTPLT32:
1602 case R_390_GOTPLTENT:
1603 if (h != NULL)
1604 {
1605 if (h->plt.refcount > 0)
1606 {
1607 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1608 h->plt.refcount -= 1;
1609 }
1610 }
1611 else if (local_got_refcounts != NULL)
1612 {
1613 if (local_got_refcounts[r_symndx] > 0)
1614 local_got_refcounts[r_symndx] -= 1;
1615 }
1616 break;
1617
1618 default:
1619 break;
1620 }
1621 }
1622
1623 return TRUE;
1624 }
1625
1626 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1627 entry but we found we will not create any. Called when we find we will
1628 not have any PLT for this symbol, by for example
1629 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1630 or elf_s390_size_dynamic_sections if no dynamic sections will be
1631 created (we're only linking static objects). */
1632
1633 static void
1634 elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
1635 {
1636 if (h->elf.root.type == bfd_link_hash_warning)
1637 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1638
1639 if (h->gotplt_refcount <= 0)
1640 return;
1641
1642 /* We simply add the number of gotplt references to the number
1643 * of got references for this symbol. */
1644 h->elf.got.refcount += h->gotplt_refcount;
1645 h->gotplt_refcount = -1;
1646 }
1647
1648 /* Adjust a symbol defined by a dynamic object and referenced by a
1649 regular object. The current definition is in some section of the
1650 dynamic object, but we're not including those sections. We have to
1651 change the definition to something the rest of the link can
1652 understand. */
1653
1654 static bfd_boolean
1655 elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1656 struct elf_link_hash_entry *h)
1657 {
1658 struct elf_s390_link_hash_table *htab;
1659 asection *s;
1660
1661 /* STT_GNU_IFUNC symbol must go through PLT. */
1662 if (s390_is_ifunc_symbol_p (h))
1663 {
1664 /* All local STT_GNU_IFUNC references must be treated as local
1665 calls via local PLT. */
1666 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1667 {
1668 bfd_size_type pc_count = 0, count = 0;
1669 struct elf_dyn_relocs **pp;
1670 struct elf_s390_link_hash_entry *eh;
1671 struct elf_dyn_relocs *p;
1672
1673 eh = (struct elf_s390_link_hash_entry *) h;
1674 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1675 {
1676 pc_count += p->pc_count;
1677 p->count -= p->pc_count;
1678 p->pc_count = 0;
1679 count += p->count;
1680 if (p->count == 0)
1681 *pp = p->next;
1682 else
1683 pp = &p->next;
1684 }
1685
1686 if (pc_count || count)
1687 {
1688 h->needs_plt = 1;
1689 h->non_got_ref = 1;
1690 if (h->plt.refcount <= 0)
1691 h->plt.refcount = 1;
1692 else
1693 h->plt.refcount += 1;
1694 }
1695 }
1696
1697 if (h->plt.refcount <= 0)
1698 {
1699 h->plt.offset = (bfd_vma) -1;
1700 h->needs_plt = 0;
1701 }
1702 return TRUE;
1703 }
1704
1705 /* If this is a function, put it in the procedure linkage table. We
1706 will fill in the contents of the procedure linkage table later
1707 (although we could actually do it here). */
1708 if (h->type == STT_FUNC
1709 || h->needs_plt)
1710 {
1711 if (h->plt.refcount <= 0
1712 || SYMBOL_CALLS_LOCAL (info, h)
1713 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1714 && h->root.type != bfd_link_hash_undefweak))
1715 {
1716 /* This case can occur if we saw a PLT32 reloc in an input
1717 file, but the symbol was never referred to by a dynamic
1718 object, or if all references were garbage collected. In
1719 such a case, we don't actually need to build a procedure
1720 linkage table, and we can just do a PC32 reloc instead. */
1721 h->plt.offset = (bfd_vma) -1;
1722 h->needs_plt = 0;
1723 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1724 }
1725
1726 return TRUE;
1727 }
1728 else
1729 /* It's possible that we incorrectly decided a .plt reloc was
1730 needed for an R_390_PC32 reloc to a non-function sym in
1731 check_relocs. We can't decide accurately between function and
1732 non-function syms in check-relocs; Objects loaded later in
1733 the link may change h->type. So fix it now. */
1734 h->plt.offset = (bfd_vma) -1;
1735
1736 /* If this is a weak symbol, and there is a real definition, the
1737 processor independent code will have arranged for us to see the
1738 real definition first, and we can just use the same value. */
1739 if (h->u.weakdef != NULL)
1740 {
1741 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1742 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1743 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1744 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1745 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1746 h->non_got_ref = h->u.weakdef->non_got_ref;
1747 return TRUE;
1748 }
1749
1750 /* This is a reference to a symbol defined by a dynamic object which
1751 is not a function. */
1752
1753 /* If we are creating a shared library, we must presume that the
1754 only references to the symbol are via the global offset table.
1755 For such cases we need not do anything here; the relocations will
1756 be handled correctly by relocate_section. */
1757 if (bfd_link_pic (info))
1758 return TRUE;
1759
1760 /* If there are no references to this symbol that do not use the
1761 GOT, we don't need to generate a copy reloc. */
1762 if (!h->non_got_ref)
1763 return TRUE;
1764
1765 /* If -z nocopyreloc was given, we won't generate them either. */
1766 if (info->nocopyreloc)
1767 {
1768 h->non_got_ref = 0;
1769 return TRUE;
1770 }
1771
1772 if (ELIMINATE_COPY_RELOCS)
1773 {
1774 struct elf_s390_link_hash_entry * eh;
1775 struct elf_dyn_relocs *p;
1776
1777 eh = (struct elf_s390_link_hash_entry *) h;
1778 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1779 {
1780 s = p->sec->output_section;
1781 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1782 break;
1783 }
1784
1785 /* If we didn't find any dynamic relocs in read-only sections, then
1786 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1787 if (p == NULL)
1788 {
1789 h->non_got_ref = 0;
1790 return TRUE;
1791 }
1792 }
1793
1794 /* We must allocate the symbol in our .dynbss section, which will
1795 become part of the .bss section of the executable. There will be
1796 an entry for this symbol in the .dynsym section. The dynamic
1797 object will contain position independent code, so all references
1798 from the dynamic object to this symbol will go through the global
1799 offset table. The dynamic linker will use the .dynsym entry to
1800 determine the address it must put in the global offset table, so
1801 both the dynamic object and the regular object will refer to the
1802 same memory location for the variable. */
1803
1804 htab = elf_s390_hash_table (info);
1805
1806 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1807 copy the initial value out of the dynamic object and into the
1808 runtime process image. */
1809 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
1810 {
1811 htab->srelbss->size += sizeof (Elf32_External_Rela);
1812 h->needs_copy = 1;
1813 }
1814
1815 s = htab->sdynbss;
1816
1817 return _bfd_elf_adjust_dynamic_copy (info, h, s);
1818 }
1819
1820 /* Allocate space in .plt, .got and associated reloc sections for
1821 dynamic relocs. */
1822
1823 static bfd_boolean
1824 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1825 {
1826 struct bfd_link_info *info;
1827 struct elf_s390_link_hash_table *htab;
1828 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
1829 struct elf_dyn_relocs *p;
1830
1831 if (h->root.type == bfd_link_hash_indirect)
1832 return TRUE;
1833
1834 info = (struct bfd_link_info *) inf;
1835 htab = elf_s390_hash_table (info);
1836
1837 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1838 here if it is defined and referenced in a non-shared object. */
1839 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1840 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
1841 else if (htab->elf.dynamic_sections_created
1842 && h->plt.refcount > 0)
1843 {
1844 /* Make sure this symbol is output as a dynamic symbol.
1845 Undefined weak syms won't yet be marked as dynamic. */
1846 if (h->dynindx == -1
1847 && !h->forced_local)
1848 {
1849 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1850 return FALSE;
1851 }
1852
1853 if (bfd_link_pic (info)
1854 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1855 {
1856 asection *s = htab->elf.splt;
1857
1858 /* If this is the first .plt entry, make room for the special
1859 first entry. */
1860 if (s->size == 0)
1861 s->size += PLT_FIRST_ENTRY_SIZE;
1862
1863 h->plt.offset = s->size;
1864
1865 /* If this symbol is not defined in a regular file, and we are
1866 not generating a shared library, then set the symbol to this
1867 location in the .plt. This is required to make function
1868 pointers compare as equal between the normal executable and
1869 the shared library. */
1870 if (! bfd_link_pic (info)
1871 && !h->def_regular)
1872 {
1873 h->root.u.def.section = s;
1874 h->root.u.def.value = h->plt.offset;
1875 }
1876
1877 /* Make room for this entry. */
1878 s->size += PLT_ENTRY_SIZE;
1879
1880 /* We also need to make an entry in the .got.plt section, which
1881 will be placed in the .got section by the linker script. */
1882 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
1883
1884 /* We also need to make an entry in the .rela.plt section. */
1885 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
1886 }
1887 else
1888 {
1889 h->plt.offset = (bfd_vma) -1;
1890 h->needs_plt = 0;
1891 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1892 }
1893 }
1894 else
1895 {
1896 h->plt.offset = (bfd_vma) -1;
1897 h->needs_plt = 0;
1898 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1899 }
1900
1901 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1902 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1903 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1904 we can save the dynamic TLS relocation. */
1905 if (h->got.refcount > 0
1906 && !bfd_link_pic (info)
1907 && h->dynindx == -1
1908 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1909 {
1910 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1911 /* For the GOTIE access without a literal pool entry the offset has
1912 to be stored somewhere. The immediate value in the instruction
1913 is not bit enough so the value is stored in the got. */
1914 {
1915 h->got.offset = htab->elf.sgot->size;
1916 htab->elf.sgot->size += GOT_ENTRY_SIZE;
1917 }
1918 else
1919 h->got.offset = (bfd_vma) -1;
1920 }
1921 else if (h->got.refcount > 0)
1922 {
1923 asection *s;
1924 bfd_boolean dyn;
1925 int tls_type = elf_s390_hash_entry(h)->tls_type;
1926
1927 /* Make sure this symbol is output as a dynamic symbol.
1928 Undefined weak syms won't yet be marked as dynamic. */
1929 if (h->dynindx == -1
1930 && !h->forced_local)
1931 {
1932 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1933 return FALSE;
1934 }
1935
1936 s = htab->elf.sgot;
1937 h->got.offset = s->size;
1938 s->size += GOT_ENTRY_SIZE;
1939 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1940 if (tls_type == GOT_TLS_GD)
1941 s->size += GOT_ENTRY_SIZE;
1942 dyn = htab->elf.dynamic_sections_created;
1943 /* R_390_TLS_IE32 needs one dynamic relocation,
1944 R_390_TLS_GD32 needs one if local symbol and two if global. */
1945 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1946 || tls_type >= GOT_TLS_IE)
1947 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
1948 else if (tls_type == GOT_TLS_GD)
1949 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela);
1950 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1951 || h->root.type != bfd_link_hash_undefweak)
1952 && (bfd_link_pic (info)
1953 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1954 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
1955 }
1956 else
1957 h->got.offset = (bfd_vma) -1;
1958
1959 if (eh->dyn_relocs == NULL)
1960 return TRUE;
1961
1962 /* In the shared -Bsymbolic case, discard space allocated for
1963 dynamic pc-relative relocs against symbols which turn out to be
1964 defined in regular objects. For the normal shared case, discard
1965 space for pc-relative relocs that have become local due to symbol
1966 visibility changes. */
1967
1968 if (bfd_link_pic (info))
1969 {
1970 if (SYMBOL_CALLS_LOCAL (info, h))
1971 {
1972 struct elf_dyn_relocs **pp;
1973
1974 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1975 {
1976 p->count -= p->pc_count;
1977 p->pc_count = 0;
1978 if (p->count == 0)
1979 *pp = p->next;
1980 else
1981 pp = &p->next;
1982 }
1983 }
1984
1985 /* Also discard relocs on undefined weak syms with non-default
1986 visibility. */
1987 if (eh->dyn_relocs != NULL
1988 && h->root.type == bfd_link_hash_undefweak)
1989 {
1990 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1991 eh->dyn_relocs = NULL;
1992
1993 /* Make sure undefined weak symbols are output as a dynamic
1994 symbol in PIEs. */
1995 else if (h->dynindx == -1
1996 && !h->forced_local)
1997 {
1998 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1999 return FALSE;
2000 }
2001 }
2002 }
2003 else if (ELIMINATE_COPY_RELOCS)
2004 {
2005 /* For the non-shared case, discard space for relocs against
2006 symbols which turn out to need copy relocs or are not
2007 dynamic. */
2008
2009 if (!h->non_got_ref
2010 && ((h->def_dynamic
2011 && !h->def_regular)
2012 || (htab->elf.dynamic_sections_created
2013 && (h->root.type == bfd_link_hash_undefweak
2014 || h->root.type == bfd_link_hash_undefined))))
2015 {
2016 /* Make sure this symbol is output as a dynamic symbol.
2017 Undefined weak syms won't yet be marked as dynamic. */
2018 if (h->dynindx == -1
2019 && !h->forced_local)
2020 {
2021 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2022 return FALSE;
2023 }
2024
2025 /* If that succeeded, we know we'll be keeping all the
2026 relocs. */
2027 if (h->dynindx != -1)
2028 goto keep;
2029 }
2030
2031 eh->dyn_relocs = NULL;
2032
2033 keep: ;
2034 }
2035
2036 /* Finally, allocate space. */
2037 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2038 {
2039 asection *sreloc = elf_section_data (p->sec)->sreloc;
2040
2041 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2042 }
2043
2044 return TRUE;
2045 }
2046
2047 /* Find any dynamic relocs that apply to read-only sections. */
2048
2049 static bfd_boolean
2050 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2051 {
2052 struct elf_s390_link_hash_entry *eh;
2053 struct elf_dyn_relocs *p;
2054
2055 eh = (struct elf_s390_link_hash_entry *) h;
2056 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2057 {
2058 asection *s = p->sec->output_section;
2059
2060 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2061 {
2062 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2063
2064 info->flags |= DF_TEXTREL;
2065
2066 /* Not an error, just cut short the traversal. */
2067 return FALSE;
2068 }
2069 }
2070 return TRUE;
2071 }
2072
2073 /* Set the sizes of the dynamic sections. */
2074
2075 static bfd_boolean
2076 elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2077 struct bfd_link_info *info)
2078 {
2079 struct elf_s390_link_hash_table *htab;
2080 bfd *dynobj;
2081 asection *s;
2082 bfd_boolean relocs;
2083 bfd *ibfd;
2084
2085 htab = elf_s390_hash_table (info);
2086 dynobj = htab->elf.dynobj;
2087 if (dynobj == NULL)
2088 abort ();
2089
2090 if (htab->elf.dynamic_sections_created)
2091 {
2092 /* Set the contents of the .interp section to the interpreter. */
2093 if (bfd_link_executable (info) && !info->nointerp)
2094 {
2095 s = bfd_get_linker_section (dynobj, ".interp");
2096 if (s == NULL)
2097 abort ();
2098 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2099 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2100 }
2101 }
2102
2103 /* Set up .got offsets for local syms, and space for local dynamic
2104 relocs. */
2105 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2106 {
2107 bfd_signed_vma *local_got;
2108 bfd_signed_vma *end_local_got;
2109 char *local_tls_type;
2110 bfd_size_type locsymcount;
2111 Elf_Internal_Shdr *symtab_hdr;
2112 asection *srela;
2113 struct plt_entry *local_plt;
2114 unsigned int i;
2115
2116 if (! is_s390_elf (ibfd))
2117 continue;
2118
2119 for (s = ibfd->sections; s != NULL; s = s->next)
2120 {
2121 struct elf_dyn_relocs *p;
2122
2123 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2124 {
2125 if (!bfd_is_abs_section (p->sec)
2126 && bfd_is_abs_section (p->sec->output_section))
2127 {
2128 /* Input section has been discarded, either because
2129 it is a copy of a linkonce section or due to
2130 linker script /DISCARD/, so we'll be discarding
2131 the relocs too. */
2132 }
2133 else if (p->count != 0)
2134 {
2135 srela = elf_section_data (p->sec)->sreloc;
2136 srela->size += p->count * sizeof (Elf32_External_Rela);
2137 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2138 info->flags |= DF_TEXTREL;
2139 }
2140 }
2141 }
2142
2143 local_got = elf_local_got_refcounts (ibfd);
2144 if (!local_got)
2145 continue;
2146
2147 symtab_hdr = &elf_symtab_hdr (ibfd);
2148 locsymcount = symtab_hdr->sh_info;
2149 end_local_got = local_got + locsymcount;
2150 local_tls_type = elf_s390_local_got_tls_type (ibfd);
2151 s = htab->elf.sgot;
2152 srela = htab->elf.srelgot;
2153 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2154 {
2155 if (*local_got > 0)
2156 {
2157 *local_got = s->size;
2158 s->size += GOT_ENTRY_SIZE;
2159 if (*local_tls_type == GOT_TLS_GD)
2160 s->size += GOT_ENTRY_SIZE;
2161 if (bfd_link_pic (info))
2162 srela->size += sizeof (Elf32_External_Rela);
2163 }
2164 else
2165 *local_got = (bfd_vma) -1;
2166 }
2167 local_plt = elf_s390_local_plt (ibfd);
2168 for (i = 0; i < symtab_hdr->sh_info; i++)
2169 {
2170 if (local_plt[i].plt.refcount > 0)
2171 {
2172 local_plt[i].plt.offset = htab->elf.iplt->size;
2173 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2174 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2175 htab->elf.irelplt->size += RELA_ENTRY_SIZE;
2176 }
2177 else
2178 local_plt[i].plt.offset = (bfd_vma) -1;
2179 }
2180 }
2181
2182 if (htab->tls_ldm_got.refcount > 0)
2183 {
2184 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2185 relocs. */
2186 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2187 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2188 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
2189 }
2190 else
2191 htab->tls_ldm_got.offset = -1;
2192
2193 /* Allocate global sym .plt and .got entries, and space for global
2194 sym dynamic relocs. */
2195 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2196
2197 /* We now have determined the sizes of the various dynamic sections.
2198 Allocate memory for them. */
2199 relocs = FALSE;
2200 for (s = dynobj->sections; s != NULL; s = s->next)
2201 {
2202 if ((s->flags & SEC_LINKER_CREATED) == 0)
2203 continue;
2204
2205 if (s == htab->elf.splt
2206 || s == htab->elf.sgot
2207 || s == htab->elf.sgotplt
2208 || s == htab->sdynbss
2209 || s == htab->elf.iplt
2210 || s == htab->elf.igotplt
2211 || s == htab->irelifunc)
2212 {
2213 /* Strip this section if we don't need it; see the
2214 comment below. */
2215 }
2216 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2217 {
2218 if (s->size != 0)
2219 relocs = TRUE;
2220
2221 /* We use the reloc_count field as a counter if we need
2222 to copy relocs into the output file. */
2223 s->reloc_count = 0;
2224 }
2225 else
2226 {
2227 /* It's not one of our sections, so don't allocate space. */
2228 continue;
2229 }
2230
2231 if (s->size == 0)
2232 {
2233 /* If we don't need this section, strip it from the
2234 output file. This is to handle .rela.bss and
2235 .rela.plt. We must create it in
2236 create_dynamic_sections, because it must be created
2237 before the linker maps input sections to output
2238 sections. The linker does that before
2239 adjust_dynamic_symbol is called, and it is that
2240 function which decides whether anything needs to go
2241 into these sections. */
2242
2243 s->flags |= SEC_EXCLUDE;
2244 continue;
2245 }
2246
2247 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2248 continue;
2249
2250 /* Allocate memory for the section contents. We use bfd_zalloc
2251 here in case unused entries are not reclaimed before the
2252 section's contents are written out. This should not happen,
2253 but this way if it does, we get a R_390_NONE reloc instead
2254 of garbage. */
2255 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2256 if (s->contents == NULL)
2257 return FALSE;
2258 }
2259
2260 if (htab->elf.dynamic_sections_created)
2261 {
2262 /* Add some entries to the .dynamic section. We fill in the
2263 values later, in elf_s390_finish_dynamic_sections, but we
2264 must add the entries now so that we get the correct size for
2265 the .dynamic section. The DT_DEBUG entry is filled in by the
2266 dynamic linker and used by the debugger. */
2267 #define add_dynamic_entry(TAG, VAL) \
2268 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2269
2270 if (bfd_link_executable (info))
2271 {
2272 if (!add_dynamic_entry (DT_DEBUG, 0))
2273 return FALSE;
2274 }
2275
2276 if (htab->elf.splt->size != 0)
2277 {
2278 if (!add_dynamic_entry (DT_PLTGOT, 0)
2279 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2280 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2281 || !add_dynamic_entry (DT_JMPREL, 0))
2282 return FALSE;
2283 }
2284
2285 if (relocs)
2286 {
2287 if (!add_dynamic_entry (DT_RELA, 0)
2288 || !add_dynamic_entry (DT_RELASZ, 0)
2289 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2290 return FALSE;
2291
2292 /* If any dynamic relocs apply to a read-only section,
2293 then we need a DT_TEXTREL entry. */
2294 if ((info->flags & DF_TEXTREL) == 0)
2295 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
2296
2297 if ((info->flags & DF_TEXTREL) != 0)
2298 {
2299 if (!add_dynamic_entry (DT_TEXTREL, 0))
2300 return FALSE;
2301 }
2302 }
2303 }
2304 #undef add_dynamic_entry
2305
2306 return TRUE;
2307 }
2308
2309 /* Return the base VMA address which should be subtracted from real addresses
2310 when resolving @dtpoff relocation.
2311 This is PT_TLS segment p_vaddr. */
2312
2313 static bfd_vma
2314 dtpoff_base (struct bfd_link_info *info)
2315 {
2316 /* If tls_sec is NULL, we should have signalled an error already. */
2317 if (elf_hash_table (info)->tls_sec == NULL)
2318 return 0;
2319 return elf_hash_table (info)->tls_sec->vma;
2320 }
2321
2322 /* Return the relocation value for @tpoff relocation
2323 if STT_TLS virtual address is ADDRESS. */
2324
2325 static bfd_vma
2326 tpoff (struct bfd_link_info *info, bfd_vma address)
2327 {
2328 struct elf_link_hash_table *htab = elf_hash_table (info);
2329
2330 /* If tls_sec is NULL, we should have signalled an error already. */
2331 if (htab->tls_sec == NULL)
2332 return 0;
2333 return htab->tls_size + htab->tls_sec->vma - address;
2334 }
2335
2336 /* Complain if TLS instruction relocation is against an invalid
2337 instruction. */
2338
2339 static void
2340 invalid_tls_insn (bfd *input_bfd,
2341 asection *input_section,
2342 Elf_Internal_Rela *rel)
2343 {
2344 reloc_howto_type *howto;
2345
2346 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2347 _bfd_error_handler
2348 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2349 input_bfd,
2350 input_section,
2351 (long) rel->r_offset,
2352 howto->name);
2353 bfd_set_error (bfd_error_bad_value);
2354 }
2355
2356 /* Relocate a 390 ELF section. */
2357
2358 static bfd_boolean
2359 elf_s390_relocate_section (bfd *output_bfd,
2360 struct bfd_link_info *info,
2361 bfd *input_bfd,
2362 asection *input_section,
2363 bfd_byte *contents,
2364 Elf_Internal_Rela *relocs,
2365 Elf_Internal_Sym *local_syms,
2366 asection **local_sections)
2367 {
2368 struct elf_s390_link_hash_table *htab;
2369 Elf_Internal_Shdr *symtab_hdr;
2370 struct elf_link_hash_entry **sym_hashes;
2371 bfd_vma *local_got_offsets;
2372 Elf_Internal_Rela *rel;
2373 Elf_Internal_Rela *relend;
2374
2375 BFD_ASSERT (is_s390_elf (input_bfd));
2376
2377 htab = elf_s390_hash_table (info);
2378 symtab_hdr = &elf_symtab_hdr (input_bfd);
2379 sym_hashes = elf_sym_hashes (input_bfd);
2380 local_got_offsets = elf_local_got_offsets (input_bfd);
2381
2382 rel = relocs;
2383 relend = relocs + input_section->reloc_count;
2384 for (; rel < relend; rel++)
2385 {
2386 unsigned int r_type;
2387 reloc_howto_type *howto;
2388 unsigned long r_symndx;
2389 struct elf_link_hash_entry *h;
2390 Elf_Internal_Sym *sym;
2391 asection *sec;
2392 bfd_vma off;
2393 bfd_vma relocation;
2394 bfd_boolean unresolved_reloc;
2395 bfd_reloc_status_type r;
2396 int tls_type;
2397 asection *base_got = htab->elf.sgot;
2398
2399 r_type = ELF32_R_TYPE (rel->r_info);
2400 if (r_type == (int) R_390_GNU_VTINHERIT
2401 || r_type == (int) R_390_GNU_VTENTRY)
2402 continue;
2403 if (r_type >= (int) R_390_max)
2404 {
2405 bfd_set_error (bfd_error_bad_value);
2406 return FALSE;
2407 }
2408
2409 howto = elf_howto_table + r_type;
2410 r_symndx = ELF32_R_SYM (rel->r_info);
2411
2412 h = NULL;
2413 sym = NULL;
2414 sec = NULL;
2415 unresolved_reloc = FALSE;
2416 if (r_symndx < symtab_hdr->sh_info)
2417 {
2418 sym = local_syms + r_symndx;
2419 sec = local_sections[r_symndx];
2420 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2421 {
2422 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2423 if (local_plt == NULL)
2424 return FALSE;
2425
2426 /* Address of the PLT slot. */
2427 relocation = (htab->elf.iplt->output_section->vma
2428 + htab->elf.iplt->output_offset
2429 + local_plt[r_symndx].plt.offset);
2430
2431 switch (r_type)
2432 {
2433 case R_390_PLTOFF16:
2434 case R_390_PLTOFF32:
2435 relocation -= htab->elf.sgot->output_section->vma;
2436 break;
2437 case R_390_GOTPLT12:
2438 case R_390_GOTPLT16:
2439 case R_390_GOTPLT20:
2440 case R_390_GOTPLT32:
2441 case R_390_GOTPLTENT:
2442 case R_390_GOT12:
2443 case R_390_GOT16:
2444 case R_390_GOT20:
2445 case R_390_GOT32:
2446 case R_390_GOTENT:
2447 {
2448 /* Write the PLT slot address into the GOT slot. */
2449 bfd_put_32 (output_bfd, relocation,
2450 htab->elf.sgot->contents +
2451 local_got_offsets[r_symndx]);
2452 relocation = (local_got_offsets[r_symndx] +
2453 htab->elf.sgot->output_offset);
2454
2455 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2456 relocation += htab->elf.sgot->output_section->vma;
2457 break;
2458 }
2459 default:
2460 break;
2461 }
2462 /* The output section is needed later in
2463 finish_dynamic_section when creating the dynamic
2464 relocation. */
2465 local_plt[r_symndx].sec = sec;
2466 goto do_relocation;
2467 }
2468 else
2469 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2470 }
2471 else
2472 {
2473 bfd_boolean warned ATTRIBUTE_UNUSED;
2474 bfd_boolean ignored ATTRIBUTE_UNUSED;
2475
2476 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2477 r_symndx, symtab_hdr, sym_hashes,
2478 h, sec, relocation,
2479 unresolved_reloc, warned, ignored);
2480 }
2481
2482 if (sec != NULL && discarded_section (sec))
2483 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2484 rel, 1, relend, howto, 0, contents);
2485
2486 if (bfd_link_relocatable (info))
2487 continue;
2488
2489 switch (r_type)
2490 {
2491 case R_390_GOTPLT12:
2492 case R_390_GOTPLT16:
2493 case R_390_GOTPLT20:
2494 case R_390_GOTPLT32:
2495 case R_390_GOTPLTENT:
2496 /* There are three cases for a GOTPLT relocation. 1) The
2497 relocation is against the jump slot entry of a plt that
2498 will get emitted to the output file. 2) The relocation
2499 is against the jump slot of a plt entry that has been
2500 removed. elf_s390_adjust_gotplt has created a GOT entry
2501 as replacement. 3) The relocation is against a local symbol.
2502 Cases 2) and 3) are the same as the GOT relocation code
2503 so we just have to test for case 1 and fall through for
2504 the other two. */
2505 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2506 {
2507 bfd_vma plt_index;
2508
2509 if (s390_is_ifunc_symbol_p (h))
2510 {
2511 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2512 relocation = (plt_index * GOT_ENTRY_SIZE +
2513 htab->elf.igotplt->output_offset);
2514 if (r_type == R_390_GOTPLTENT)
2515 relocation += htab->elf.igotplt->output_section->vma;
2516 }
2517 else
2518 {
2519 /* Calc. index no.
2520 Current offset - size first entry / entry size. */
2521 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2522 PLT_ENTRY_SIZE;
2523
2524 /* Offset in GOT is PLT index plus GOT headers(3)
2525 times 4, addr & GOT addr. */
2526 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2527 if (r_type == R_390_GOTPLTENT)
2528 relocation += htab->elf.sgot->output_section->vma;
2529 }
2530 unresolved_reloc = FALSE;
2531
2532 }
2533 /* Fall through. */
2534
2535 case R_390_GOT12:
2536 case R_390_GOT16:
2537 case R_390_GOT20:
2538 case R_390_GOT32:
2539 case R_390_GOTENT:
2540 /* Relocation is to the entry for this symbol in the global
2541 offset table. */
2542 if (base_got == NULL)
2543 abort ();
2544
2545 if (h != NULL)
2546 {
2547 bfd_boolean dyn;
2548
2549 off = h->got.offset;
2550 dyn = htab->elf.dynamic_sections_created;
2551
2552 if (s390_is_ifunc_symbol_p (h))
2553 {
2554 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2555 if (off == (bfd_vma)-1)
2556 {
2557 /* No explicit GOT usage so redirect to the
2558 got.iplt slot. */
2559 base_got = htab->elf.igotplt;
2560 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2561 }
2562 else
2563 {
2564 /* Explicit GOT slots must contain the address
2565 of the PLT slot. This will be handled in
2566 finish_dynamic_symbol. */
2567 }
2568 }
2569 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2570 bfd_link_pic (info),
2571 h)
2572 || (bfd_link_pic (info)
2573 && SYMBOL_REFERENCES_LOCAL (info, h))
2574 || (ELF_ST_VISIBILITY (h->other)
2575 && h->root.type == bfd_link_hash_undefweak))
2576
2577 {
2578 /* This is actually a static link, or it is a
2579 -Bsymbolic link and the symbol is defined
2580 locally, or the symbol was forced to be local
2581 because of a version file. We must initialize
2582 this entry in the global offset table. Since the
2583 offset must always be a multiple of 2, we use the
2584 least significant bit to record whether we have
2585 initialized it already.
2586
2587 When doing a dynamic link, we create a .rel.got
2588 relocation entry to initialize the value. This
2589 is done in the finish_dynamic_symbol routine. */
2590 if ((off & 1) != 0)
2591 off &= ~1;
2592 else
2593 {
2594 bfd_put_32 (output_bfd, relocation,
2595 base_got->contents + off);
2596 h->got.offset |= 1;
2597 }
2598
2599 if ((h->def_regular
2600 && bfd_link_pic (info)
2601 && SYMBOL_REFERENCES_LOCAL (info, h))
2602 /* lrl rx,sym@GOTENT -> larl rx, sym */
2603 && ((r_type == R_390_GOTENT
2604 && (bfd_get_16 (input_bfd,
2605 contents + rel->r_offset - 2)
2606 & 0xff0f) == 0xc40d)
2607 /* ly rx, sym@GOT(r12) -> larl rx, sym */
2608 || (r_type == R_390_GOT20
2609 && (bfd_get_32 (input_bfd,
2610 contents + rel->r_offset - 2)
2611 & 0xff00f000) == 0xe300c000
2612 && bfd_get_8 (input_bfd,
2613 contents + rel->r_offset + 3) == 0x58)))
2614 {
2615 unsigned short new_insn =
2616 (0xc000 | (bfd_get_8 (input_bfd,
2617 contents + rel->r_offset - 1) & 0xf0));
2618 bfd_put_16 (output_bfd, new_insn,
2619 contents + rel->r_offset - 2);
2620 r_type = R_390_PC32DBL;
2621 rel->r_addend = 2;
2622 howto = elf_howto_table + r_type;
2623 relocation = h->root.u.def.value
2624 + h->root.u.def.section->output_section->vma
2625 + h->root.u.def.section->output_offset;
2626 goto do_relocation;
2627 }
2628 }
2629 else
2630 unresolved_reloc = FALSE;
2631 }
2632 else
2633 {
2634 if (local_got_offsets == NULL)
2635 abort ();
2636
2637 off = local_got_offsets[r_symndx];
2638
2639 /* The offset must always be a multiple of 4. We use
2640 the least significant bit to record whether we have
2641 already generated the necessary reloc. */
2642 if ((off & 1) != 0)
2643 off &= ~1;
2644 else
2645 {
2646 bfd_put_32 (output_bfd, relocation,
2647 htab->elf.sgot->contents + off);
2648
2649 if (bfd_link_pic (info))
2650 {
2651 asection *srelgot;
2652 Elf_Internal_Rela outrel;
2653 bfd_byte *loc;
2654
2655 srelgot = htab->elf.srelgot;
2656 if (srelgot == NULL)
2657 abort ();
2658
2659 outrel.r_offset = (htab->elf.sgot->output_section->vma
2660 + htab->elf.sgot->output_offset
2661 + off);
2662 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2663 outrel.r_addend = relocation;
2664 loc = srelgot->contents;
2665 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
2666 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2667 }
2668
2669 local_got_offsets[r_symndx] |= 1;
2670 }
2671 }
2672
2673 if (off >= (bfd_vma) -2)
2674 abort ();
2675
2676 relocation = base_got->output_offset + off;
2677
2678 /* For @GOTENT the relocation is against the offset between
2679 the instruction and the symbols entry in the GOT and not
2680 between the start of the GOT and the symbols entry. We
2681 add the vma of the GOT to get the correct value. */
2682 if ( r_type == R_390_GOTENT
2683 || r_type == R_390_GOTPLTENT)
2684 relocation += base_got->output_section->vma;
2685
2686 break;
2687
2688 case R_390_GOTOFF16:
2689 case R_390_GOTOFF32:
2690 /* Relocation is relative to the start of the global offset
2691 table. */
2692
2693 if (h != NULL
2694 && s390_is_ifunc_symbol_p (h)
2695 && h->def_regular
2696 && !bfd_link_executable (info))
2697 {
2698 relocation = (htab->elf.iplt->output_section->vma
2699 + htab->elf.iplt->output_offset
2700 + h->plt.offset
2701 - htab->elf.sgot->output_section->vma);
2702 goto do_relocation;
2703 }
2704
2705 /* Note that sgot->output_offset is not involved in this
2706 calculation. We always want the start of .got. If we
2707 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2708 permitted by the ABI, we might have to change this
2709 calculation. */
2710 relocation -= htab->elf.sgot->output_section->vma;
2711 break;
2712
2713 case R_390_GOTPC:
2714 case R_390_GOTPCDBL:
2715 /* Use global offset table as symbol value. */
2716 relocation = htab->elf.sgot->output_section->vma;
2717 unresolved_reloc = FALSE;
2718 break;
2719
2720 case R_390_PLT12DBL:
2721 case R_390_PLT16DBL:
2722 case R_390_PLT24DBL:
2723 case R_390_PLT32DBL:
2724 case R_390_PLT32:
2725 /* Relocation is to the entry for this symbol in the
2726 procedure linkage table. */
2727
2728 /* Resolve a PLT32 reloc against a local symbol directly,
2729 without using the procedure linkage table. */
2730 if (h == NULL)
2731 break;
2732
2733 if (h->plt.offset == (bfd_vma) -1
2734 || (htab->elf.splt == NULL && htab->elf.iplt == NULL))
2735 {
2736 /* We didn't make a PLT entry for this symbol. This
2737 happens when statically linking PIC code, or when
2738 using -Bsymbolic. */
2739 break;
2740 }
2741
2742 if (s390_is_ifunc_symbol_p (h))
2743 relocation = (htab->elf.iplt->output_section->vma
2744 + htab->elf.iplt->output_offset
2745 + h->plt.offset);
2746 else
2747 relocation = (htab->elf.splt->output_section->vma
2748 + htab->elf.splt->output_offset
2749 + h->plt.offset);
2750 unresolved_reloc = FALSE;
2751 break;
2752
2753 case R_390_PLTOFF16:
2754 case R_390_PLTOFF32:
2755 /* Relocation is to the entry for this symbol in the
2756 procedure linkage table relative to the start of the GOT. */
2757
2758 /* For local symbols or if we didn't make a PLT entry for
2759 this symbol resolve the symbol directly. */
2760 if (h == NULL
2761 || h->plt.offset == (bfd_vma) -1
2762 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
2763 {
2764 relocation -= htab->elf.sgot->output_section->vma;
2765 break;
2766 }
2767
2768 if (s390_is_ifunc_symbol_p (h))
2769 relocation = (htab->elf.iplt->output_section->vma
2770 + htab->elf.iplt->output_offset
2771 + h->plt.offset
2772 - htab->elf.sgot->output_section->vma);
2773 else
2774 relocation = (htab->elf.splt->output_section->vma
2775 + htab->elf.splt->output_offset
2776 + h->plt.offset
2777 - htab->elf.sgot->output_section->vma);
2778 unresolved_reloc = FALSE;
2779 break;
2780
2781 case R_390_PC16:
2782 case R_390_PC12DBL:
2783 case R_390_PC16DBL:
2784 case R_390_PC24DBL:
2785 case R_390_PC32DBL:
2786 case R_390_PC32:
2787 if (h != NULL
2788 && s390_is_ifunc_symbol_p (h)
2789 && h->def_regular
2790 && !bfd_link_executable (info))
2791 {
2792 /* This will not work our if the function does not
2793 happen to set up the GOT pointer for some other
2794 reason. 31 bit PLT entries require r12 to hold the
2795 GOT pointer.
2796 FIXME: Implement an errorcheck.
2797 NOTE: It will work when brasl is not available
2798 (e.g. with -m31 -march=g5) since a local function
2799 call then does use GOTOFF which implies r12 being set
2800 up. */
2801 relocation = (htab->elf.iplt->output_section->vma
2802 + htab->elf.iplt->output_offset
2803 + h ->plt.offset);
2804 goto do_relocation;
2805 }
2806 /* Fall through. */
2807
2808 case R_390_8:
2809 case R_390_16:
2810 case R_390_32:
2811 if (h != NULL
2812 && s390_is_ifunc_symbol_p (h)
2813 && h->def_regular)
2814 {
2815 if (!bfd_link_pic (info) || !h->non_got_ref)
2816 {
2817 /* For a non-shared object STT_GNU_IFUNC symbol must
2818 go through PLT. */
2819 relocation = (htab->elf.iplt->output_section->vma
2820 + htab->elf.iplt->output_offset
2821 + h ->plt.offset);
2822 goto do_relocation;
2823 }
2824 else
2825 {
2826 /* For shared objects a runtime relocation is needed. */
2827
2828 Elf_Internal_Rela outrel;
2829 asection *sreloc;
2830
2831 /* Need a dynamic relocation to get the real function
2832 address. */
2833 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2834 info,
2835 input_section,
2836 rel->r_offset);
2837 if (outrel.r_offset == (bfd_vma) -1
2838 || outrel.r_offset == (bfd_vma) -2)
2839 abort ();
2840
2841 outrel.r_offset += (input_section->output_section->vma
2842 + input_section->output_offset);
2843
2844 if (h->dynindx == -1
2845 || h->forced_local
2846 || bfd_link_executable (info))
2847 {
2848 /* This symbol is resolved locally. */
2849 outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
2850 outrel.r_addend = (h->root.u.def.value
2851 + h->root.u.def.section->output_section->vma
2852 + h->root.u.def.section->output_offset);
2853 }
2854 else
2855 {
2856 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2857 outrel.r_addend = 0;
2858 }
2859
2860 sreloc = htab->elf.irelifunc;
2861 elf_append_rela (output_bfd, sreloc, &outrel);
2862
2863 /* If this reloc is against an external symbol, we
2864 do not want to fiddle with the addend. Otherwise,
2865 we need to include the symbol value so that it
2866 becomes an addend for the dynamic reloc. For an
2867 internal symbol, we have updated addend. */
2868 continue;
2869 }
2870 }
2871
2872 if ((input_section->flags & SEC_ALLOC) == 0)
2873 break;
2874
2875 if ((bfd_link_pic (info)
2876 && (h == NULL
2877 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2878 || h->root.type != bfd_link_hash_undefweak)
2879 && ((r_type != R_390_PC16
2880 && r_type != R_390_PC12DBL
2881 && r_type != R_390_PC16DBL
2882 && r_type != R_390_PC24DBL
2883 && r_type != R_390_PC32DBL
2884 && r_type != R_390_PC32)
2885 || !SYMBOL_CALLS_LOCAL (info, h)))
2886 || (ELIMINATE_COPY_RELOCS
2887 && !bfd_link_pic (info)
2888 && h != NULL
2889 && h->dynindx != -1
2890 && !h->non_got_ref
2891 && ((h->def_dynamic
2892 && !h->def_regular)
2893 || h->root.type == bfd_link_hash_undefweak
2894 || h->root.type == bfd_link_hash_undefined)))
2895 {
2896 Elf_Internal_Rela outrel;
2897 bfd_boolean skip, relocate;
2898 asection *sreloc;
2899 bfd_byte *loc;
2900
2901 /* When generating a shared object, these relocations
2902 are copied into the output file to be resolved at run
2903 time. */
2904
2905 skip = FALSE;
2906 relocate = FALSE;
2907
2908 outrel.r_offset =
2909 _bfd_elf_section_offset (output_bfd, info, input_section,
2910 rel->r_offset);
2911 if (outrel.r_offset == (bfd_vma) -1)
2912 skip = TRUE;
2913 else if (outrel.r_offset == (bfd_vma) -2)
2914 skip = TRUE, relocate = TRUE;
2915 outrel.r_offset += (input_section->output_section->vma
2916 + input_section->output_offset);
2917
2918 if (skip)
2919 memset (&outrel, 0, sizeof outrel);
2920 else if (h != NULL
2921 && h->dynindx != -1
2922 && (r_type == R_390_PC16
2923 || r_type == R_390_PC12DBL
2924 || r_type == R_390_PC16DBL
2925 || r_type == R_390_PC24DBL
2926 || r_type == R_390_PC32DBL
2927 || r_type == R_390_PC32
2928 || !bfd_link_pic (info)
2929 || !SYMBOLIC_BIND (info, h)
2930 || !h->def_regular))
2931 {
2932 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2933 outrel.r_addend = rel->r_addend;
2934 }
2935 else
2936 {
2937 /* This symbol is local, or marked to become local. */
2938 outrel.r_addend = relocation + rel->r_addend;
2939 if (r_type == R_390_32)
2940 {
2941 relocate = TRUE;
2942 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2943 }
2944 else
2945 {
2946 long sindx;
2947
2948 if (bfd_is_abs_section (sec))
2949 sindx = 0;
2950 else if (sec == NULL || sec->owner == NULL)
2951 {
2952 bfd_set_error(bfd_error_bad_value);
2953 return FALSE;
2954 }
2955 else
2956 {
2957 asection *osec;
2958
2959 osec = sec->output_section;
2960 sindx = elf_section_data (osec)->dynindx;
2961 if (sindx == 0)
2962 {
2963 osec = htab->elf.text_index_section;
2964 sindx = elf_section_data (osec)->dynindx;
2965 }
2966 BFD_ASSERT (sindx != 0);
2967
2968 /* We are turning this relocation into one
2969 against a section symbol, so subtract out
2970 the output section's address but not the
2971 offset of the input section in the output
2972 section. */
2973 outrel.r_addend -= osec->vma;
2974 }
2975 outrel.r_info = ELF32_R_INFO (sindx, r_type);
2976 }
2977 }
2978
2979 sreloc = elf_section_data (input_section)->sreloc;
2980 if (sreloc == NULL)
2981 abort ();
2982
2983 loc = sreloc->contents;
2984 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2985 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2986
2987 /* If this reloc is against an external symbol, we do
2988 not want to fiddle with the addend. Otherwise, we
2989 need to include the symbol value so that it becomes
2990 an addend for the dynamic reloc. */
2991 if (! relocate)
2992 continue;
2993 }
2994 break;
2995
2996 /* Relocations for tls literal pool entries. */
2997 case R_390_TLS_IE32:
2998 if (bfd_link_pic (info))
2999 {
3000 Elf_Internal_Rela outrel;
3001 asection *sreloc;
3002 bfd_byte *loc;
3003
3004 outrel.r_offset = rel->r_offset
3005 + input_section->output_section->vma
3006 + input_section->output_offset;
3007 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3008 sreloc = elf_section_data (input_section)->sreloc;
3009 if (sreloc == NULL)
3010 abort ();
3011 loc = sreloc->contents;
3012 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3013 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3014 }
3015 /* Fall through. */
3016
3017 case R_390_TLS_GD32:
3018 case R_390_TLS_GOTIE32:
3019 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
3020 tls_type = GOT_UNKNOWN;
3021 if (h == NULL && local_got_offsets)
3022 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3023 else if (h != NULL)
3024 {
3025 tls_type = elf_s390_hash_entry(h)->tls_type;
3026 if (!bfd_link_pic (info)
3027 && h->dynindx == -1
3028 && tls_type >= GOT_TLS_IE)
3029 r_type = R_390_TLS_LE32;
3030 }
3031 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
3032 r_type = R_390_TLS_IE32;
3033
3034 if (r_type == R_390_TLS_LE32)
3035 {
3036 /* This relocation gets optimized away by the local exec
3037 access optimization. */
3038 BFD_ASSERT (! unresolved_reloc);
3039 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3040 contents + rel->r_offset);
3041 continue;
3042 }
3043
3044 if (htab->elf.sgot == NULL)
3045 abort ();
3046
3047 if (h != NULL)
3048 off = h->got.offset;
3049 else
3050 {
3051 if (local_got_offsets == NULL)
3052 abort ();
3053
3054 off = local_got_offsets[r_symndx];
3055 }
3056
3057 emit_tls_relocs:
3058
3059 if ((off & 1) != 0)
3060 off &= ~1;
3061 else
3062 {
3063 Elf_Internal_Rela outrel;
3064 bfd_byte *loc;
3065 int dr_type, indx;
3066
3067 if (htab->elf.srelgot == NULL)
3068 abort ();
3069
3070 outrel.r_offset = (htab->elf.sgot->output_section->vma
3071 + htab->elf.sgot->output_offset + off);
3072
3073 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3074 if (r_type == R_390_TLS_GD32)
3075 dr_type = R_390_TLS_DTPMOD;
3076 else
3077 dr_type = R_390_TLS_TPOFF;
3078 if (dr_type == R_390_TLS_TPOFF && indx == 0)
3079 outrel.r_addend = relocation - dtpoff_base (info);
3080 else
3081 outrel.r_addend = 0;
3082 outrel.r_info = ELF32_R_INFO (indx, dr_type);
3083 loc = htab->elf.srelgot->contents;
3084 loc += htab->elf.srelgot->reloc_count++
3085 * sizeof (Elf32_External_Rela);
3086 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3087
3088 if (r_type == R_390_TLS_GD32)
3089 {
3090 if (indx == 0)
3091 {
3092 BFD_ASSERT (! unresolved_reloc);
3093 bfd_put_32 (output_bfd,
3094 relocation - dtpoff_base (info),
3095 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3096 }
3097 else
3098 {
3099 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
3100 outrel.r_offset += GOT_ENTRY_SIZE;
3101 outrel.r_addend = 0;
3102 htab->elf.srelgot->reloc_count++;
3103 loc += sizeof (Elf32_External_Rela);
3104 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3105 }
3106 }
3107
3108 if (h != NULL)
3109 h->got.offset |= 1;
3110 else
3111 local_got_offsets[r_symndx] |= 1;
3112 }
3113
3114 if (off >= (bfd_vma) -2)
3115 abort ();
3116 if (r_type == ELF32_R_TYPE (rel->r_info))
3117 {
3118 relocation = htab->elf.sgot->output_offset + off;
3119 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
3120 relocation += htab->elf.sgot->output_section->vma;
3121 unresolved_reloc = FALSE;
3122 }
3123 else
3124 {
3125 bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off,
3126 contents + rel->r_offset);
3127 continue;
3128 }
3129 break;
3130
3131 case R_390_TLS_GOTIE12:
3132 case R_390_TLS_GOTIE20:
3133 case R_390_TLS_IEENT:
3134 if (h == NULL)
3135 {
3136 if (local_got_offsets == NULL)
3137 abort();
3138 off = local_got_offsets[r_symndx];
3139 if (bfd_link_pic (info))
3140 goto emit_tls_relocs;
3141 }
3142 else
3143 {
3144 off = h->got.offset;
3145 tls_type = elf_s390_hash_entry(h)->tls_type;
3146 if (bfd_link_pic (info)
3147 || h->dynindx != -1
3148 || tls_type < GOT_TLS_IE)
3149 goto emit_tls_relocs;
3150 }
3151
3152 if (htab->elf.sgot == NULL)
3153 abort ();
3154
3155 BFD_ASSERT (! unresolved_reloc);
3156 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3157 htab->elf.sgot->contents + off);
3158 relocation = htab->elf.sgot->output_offset + off;
3159 if (r_type == R_390_TLS_IEENT)
3160 relocation += htab->elf.sgot->output_section->vma;
3161 unresolved_reloc = FALSE;
3162 break;
3163
3164 case R_390_TLS_LDM32:
3165 if (! bfd_link_pic (info))
3166 /* The literal pool entry this relocation refers to gets ignored
3167 by the optimized code of the local exec model. Do nothing
3168 and the value will turn out zero. */
3169 continue;
3170
3171 if (htab->elf.sgot == NULL)
3172 abort ();
3173
3174 off = htab->tls_ldm_got.offset;
3175 if (off & 1)
3176 off &= ~1;
3177 else
3178 {
3179 Elf_Internal_Rela outrel;
3180 bfd_byte *loc;
3181
3182 if (htab->elf.srelgot == NULL)
3183 abort ();
3184
3185 outrel.r_offset = (htab->elf.sgot->output_section->vma
3186 + htab->elf.sgot->output_offset + off);
3187
3188 bfd_put_32 (output_bfd, 0,
3189 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3190 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
3191 outrel.r_addend = 0;
3192 loc = htab->elf.srelgot->contents;
3193 loc += htab->elf.srelgot->reloc_count++
3194 * sizeof (Elf32_External_Rela);
3195 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3196 htab->tls_ldm_got.offset |= 1;
3197 }
3198 relocation = htab->elf.sgot->output_offset + off;
3199 unresolved_reloc = FALSE;
3200 break;
3201
3202 case R_390_TLS_LE32:
3203 if (bfd_link_dll (info))
3204 {
3205 /* Linking a shared library with non-fpic code requires
3206 a R_390_TLS_TPOFF relocation. */
3207 Elf_Internal_Rela outrel;
3208 asection *sreloc;
3209 bfd_byte *loc;
3210 int indx;
3211
3212 outrel.r_offset = rel->r_offset
3213 + input_section->output_section->vma
3214 + input_section->output_offset;
3215 if (h != NULL && h->dynindx != -1)
3216 indx = h->dynindx;
3217 else
3218 indx = 0;
3219 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
3220 if (indx == 0)
3221 outrel.r_addend = relocation - dtpoff_base (info);
3222 else
3223 outrel.r_addend = 0;
3224 sreloc = elf_section_data (input_section)->sreloc;
3225 if (sreloc == NULL)
3226 abort ();
3227 loc = sreloc->contents;
3228 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3229 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3230 }
3231 else
3232 {
3233 BFD_ASSERT (! unresolved_reloc);
3234 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3235 contents + rel->r_offset);
3236 }
3237 continue;
3238
3239 case R_390_TLS_LDO32:
3240 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
3241 relocation -= dtpoff_base (info);
3242 else
3243 /* When converting LDO to LE, we must negate. */
3244 relocation = -tpoff (info, relocation);
3245 break;
3246
3247 /* Relocations for tls instructions. */
3248 case R_390_TLS_LOAD:
3249 case R_390_TLS_GDCALL:
3250 case R_390_TLS_LDCALL:
3251 tls_type = GOT_UNKNOWN;
3252 if (h == NULL && local_got_offsets)
3253 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3254 else if (h != NULL)
3255 tls_type = elf_s390_hash_entry(h)->tls_type;
3256
3257 if (tls_type == GOT_TLS_GD)
3258 continue;
3259
3260 if (r_type == R_390_TLS_LOAD)
3261 {
3262 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3263 {
3264 /* IE->LE transition. Four valid cases:
3265 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
3266 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
3267 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
3268 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3269 unsigned int insn, ry;
3270
3271 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3272 ry = 0;
3273 if ((insn & 0xff00f000) == 0x58000000)
3274 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
3275 ry = (insn & 0x000f0000);
3276 else if ((insn & 0xff0f0000) == 0x58000000)
3277 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
3278 ry = (insn & 0x0000f000) << 4;
3279 else if ((insn & 0xff00f000) == 0x5800c000)
3280 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
3281 ry = (insn & 0x000f0000);
3282 else if ((insn & 0xff0f0000) == 0x580c0000)
3283 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3284 ry = (insn & 0x0000f000) << 4;
3285 else
3286 invalid_tls_insn (input_bfd, input_section, rel);
3287 insn = 0x18000700 | (insn & 0x00f00000) | ry;
3288 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3289 }
3290 }
3291 else if (r_type == R_390_TLS_GDCALL)
3292 {
3293 unsigned int insn;
3294
3295 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3296 if ((insn & 0xff000fff) != 0x4d000000 &&
3297 (insn & 0xffff0000) != 0xc0e50000 &&
3298 (insn & 0xff000000) != 0x0d000000)
3299 invalid_tls_insn (input_bfd, input_section, rel);
3300 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3301 {
3302 if ((insn & 0xff000000) == 0x0d000000)
3303 {
3304 /* GD->LE transition.
3305 basr rx, ry -> nopr r7 */
3306 insn = 0x07070000 | (insn & 0xffff);
3307 }
3308 else if ((insn & 0xff000000) == 0x4d000000)
3309 {
3310 /* GD->LE transition.
3311 bas %r14,0(%rx,%r13) -> bc 0,0 */
3312 insn = 0x47000000;
3313 }
3314 else
3315 {
3316 /* GD->LE transition.
3317 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
3318 insn = 0xc0040000;
3319 bfd_put_16 (output_bfd, 0x0000,
3320 contents + rel->r_offset + 4);
3321 }
3322 }
3323 else
3324 {
3325 /* If basr is used in the pic case to invoke
3326 _tls_get_offset, something went wrong before. */
3327 if ((insn & 0xff000000) == 0x0d000000)
3328 invalid_tls_insn (input_bfd, input_section, rel);
3329
3330 if ((insn & 0xff000000) == 0x4d000000)
3331 {
3332 /* GD->IE transition.
3333 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3334 insn = 0x5822c000;
3335 }
3336 else
3337 {
3338 /* GD->IE transition.
3339 brasl %r14,__tls_get_addr@plt ->
3340 l %r2,0(%r2,%r12) ; bcr 0,0 */
3341 insn = 0x5822c000;
3342 bfd_put_16 (output_bfd, 0x0700,
3343 contents + rel->r_offset + 4);
3344 }
3345 }
3346 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3347 }
3348 else if (r_type == R_390_TLS_LDCALL)
3349 {
3350 if (!bfd_link_pic (info))
3351 {
3352 unsigned int insn;
3353
3354 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3355 if ((insn & 0xff000fff) != 0x4d000000 &&
3356 (insn & 0xffff0000) != 0xc0e50000 &&
3357 (insn & 0xff000000) != 0x0d000000)
3358 invalid_tls_insn (input_bfd, input_section, rel);
3359
3360 if ((insn & 0xff000000) == 0x0d000000)
3361 {
3362 /* LD->LE transition.
3363 basr rx, ry -> nopr r7 */
3364 insn = 0x07070000 | (insn & 0xffff);
3365 }
3366 else if ((insn & 0xff000000) == 0x4d000000)
3367 {
3368 /* LD->LE transition.
3369 bas %r14,0(%rx,%r13) -> bc 0,0 */
3370 insn = 0x47000000;
3371 }
3372 else
3373 {
3374 /* LD->LE transition.
3375 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
3376 insn = 0xc0040000;
3377 bfd_put_16 (output_bfd, 0x0000,
3378 contents + rel->r_offset + 4);
3379 }
3380 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3381 }
3382 }
3383 continue;
3384
3385 default:
3386 break;
3387 }
3388
3389 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3390 because such sections are not SEC_ALLOC and thus ld.so will
3391 not process them. */
3392 if (unresolved_reloc
3393 && !((input_section->flags & SEC_DEBUGGING) != 0
3394 && h->def_dynamic)
3395 && _bfd_elf_section_offset (output_bfd, info, input_section,
3396 rel->r_offset) != (bfd_vma) -1)
3397 _bfd_error_handler
3398 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3399 input_bfd,
3400 input_section,
3401 (long) rel->r_offset,
3402 howto->name,
3403 h->root.root.string);
3404
3405 do_relocation:
3406
3407 /* When applying a 24 bit reloc we need to start one byte
3408 earlier. Otherwise the 32 bit get/put bfd operations might
3409 access a byte after the actual section. */
3410 if (r_type == R_390_PC24DBL
3411 || r_type == R_390_PLT24DBL)
3412 rel->r_offset--;
3413
3414 if (r_type == R_390_20
3415 || r_type == R_390_GOT20
3416 || r_type == R_390_GOTPLT20
3417 || r_type == R_390_TLS_GOTIE20)
3418 {
3419 relocation += rel->r_addend;
3420 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3421 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3422 contents, rel->r_offset,
3423 relocation, 0);
3424 }
3425 else
3426 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3427 contents, rel->r_offset,
3428 relocation, rel->r_addend);
3429
3430 if (r != bfd_reloc_ok)
3431 {
3432 const char *name;
3433
3434 if (h != NULL)
3435 name = h->root.root.string;
3436 else
3437 {
3438 name = bfd_elf_string_from_elf_section (input_bfd,
3439 symtab_hdr->sh_link,
3440 sym->st_name);
3441 if (name == NULL)
3442 return FALSE;
3443 if (*name == '\0')
3444 name = bfd_section_name (input_bfd, sec);
3445 }
3446
3447 if (r == bfd_reloc_overflow)
3448 (*info->callbacks->reloc_overflow)
3449 (info, (h ? &h->root : NULL), name, howto->name,
3450 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3451 else
3452 {
3453 _bfd_error_handler
3454 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3455 input_bfd, input_section,
3456 (long) rel->r_offset, name, (int) r);
3457 return FALSE;
3458 }
3459 }
3460 }
3461
3462 return TRUE;
3463 }
3464
3465 /* Generate the PLT slots together with the dynamic relocations needed
3466 for IFUNC symbols. */
3467
3468 static void
3469 elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3470 struct bfd_link_info *info,
3471 struct elf_link_hash_entry *h,
3472 struct elf_s390_link_hash_table *htab,
3473 bfd_vma iplt_offset,
3474 bfd_vma resolver_address)
3475 {
3476 bfd_vma iplt_index;
3477 bfd_vma got_offset;
3478 bfd_vma igotiplt_offset;
3479 Elf_Internal_Rela rela;
3480 bfd_byte *loc;
3481 asection *plt, *gotplt, *relplt;
3482 bfd_vma relative_offset;
3483
3484 if (htab->elf.iplt == NULL
3485 || htab->elf.igotplt == NULL
3486 || htab->elf.irelplt == NULL)
3487 abort ();
3488
3489 gotplt = htab->elf.igotplt;
3490 relplt = htab->elf.irelplt;
3491
3492 /* Index of the PLT slot within iplt section. */
3493 iplt_index = iplt_offset / PLT_ENTRY_SIZE;
3494 plt = htab->elf.iplt;
3495 /* Offset into the igot.plt section. */
3496 igotiplt_offset = iplt_index * GOT_ENTRY_SIZE;
3497 /* Offset into the got section. */
3498 got_offset = igotiplt_offset + gotplt->output_offset;
3499
3500 /* S390 uses halfwords for relative branch calc! */
3501 relative_offset = - (plt->output_offset +
3502 (PLT_ENTRY_SIZE * iplt_index) + 18) / 2;
3503 /* If offset is > 32768, branch to a previous branch
3504 390 can only handle +-64 K jumps. */
3505 if ( -32768 > (int) relative_offset )
3506 relative_offset
3507 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3508
3509 /* Fill in the entry in the procedure linkage table. */
3510 if (!bfd_link_pic (info))
3511 {
3512 memcpy (plt->contents + iplt_offset, elf_s390_plt_entry,
3513 PLT_ENTRY_SIZE);
3514
3515 /* Adjust jump to the first plt entry. */
3516 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3517 plt->contents + iplt_offset + 20);
3518
3519 /* Push the GOT offset field. */
3520 bfd_put_32 (output_bfd,
3521 (gotplt->output_section->vma
3522 + got_offset),
3523 plt->contents + iplt_offset + 24);
3524 }
3525 else if (got_offset < 4096)
3526 {
3527 /* The GOT offset is small enough to be used directly as
3528 displacement. */
3529 memcpy (plt->contents + iplt_offset,
3530 elf_s390_plt_pic12_entry,
3531 PLT_ENTRY_SIZE);
3532
3533 /* Put in the GOT offset as displacement value. The 0xc000
3534 value comes from the first word of the plt entry. Look
3535 at the elf_s390_plt_pic16_entry content. */
3536 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3537 plt->contents + iplt_offset + 2);
3538
3539 /* Adjust the jump to the first plt entry. */
3540 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3541 plt->contents + iplt_offset + 20);
3542 }
3543 else if (got_offset < 32768)
3544 {
3545 /* The GOT offset is too big for a displacement but small
3546 enough to be a signed 16 bit immediate value as it can be
3547 used in an lhi instruction. */
3548 memcpy (plt->contents + iplt_offset,
3549 elf_s390_plt_pic16_entry,
3550 PLT_ENTRY_SIZE);
3551
3552 /* Put in the GOT offset for the lhi instruction. */
3553 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3554 plt->contents + iplt_offset + 2);
3555
3556 /* Adjust the jump to the first plt entry. */
3557 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3558 plt->contents + iplt_offset + 20);
3559 }
3560 else
3561 {
3562 memcpy (plt->contents + iplt_offset,
3563 elf_s390_plt_pic_entry,
3564 PLT_ENTRY_SIZE);
3565
3566 /* Adjust the jump to the first plt entry. */
3567 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3568 plt->contents + iplt_offset + 20);
3569
3570 /* Push the GOT offset field. */
3571 bfd_put_32 (output_bfd, got_offset,
3572 plt->contents + iplt_offset + 24);
3573 }
3574 /* Insert offset into reloc. table here. */
3575 bfd_put_32 (output_bfd, relplt->output_offset +
3576 iplt_index * RELA_ENTRY_SIZE,
3577 plt->contents + iplt_offset + 28);
3578
3579 /* Fill in the entry in the global offset table.
3580 Points to instruction after GOT offset. */
3581 bfd_put_32 (output_bfd,
3582 (plt->output_section->vma
3583 + plt->output_offset
3584 + iplt_offset
3585 + 12),
3586 gotplt->contents + igotiplt_offset);
3587
3588 /* Fill in the entry in the .rela.plt section. */
3589 rela.r_offset = gotplt->output_section->vma + got_offset;
3590
3591 if (!h
3592 || h->dynindx == -1
3593 || ((bfd_link_executable (info)
3594 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3595 && h->def_regular))
3596 {
3597 /* The symbol can be locally resolved. */
3598 rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
3599 rela.r_addend = resolver_address;
3600 }
3601 else
3602 {
3603 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3604 rela.r_addend = 0;
3605 }
3606
3607 loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE;
3608 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3609 }
3610
3611 /* Finish up dynamic symbol handling. We set the contents of various
3612 dynamic sections here. */
3613
3614 static bfd_boolean
3615 elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3616 struct bfd_link_info *info,
3617 struct elf_link_hash_entry *h,
3618 Elf_Internal_Sym *sym)
3619 {
3620 struct elf_s390_link_hash_table *htab;
3621 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
3622
3623 htab = elf_s390_hash_table (info);
3624
3625 if (h->plt.offset != (bfd_vma) -1)
3626 {
3627 bfd_vma plt_index;
3628 bfd_vma got_offset;
3629 Elf_Internal_Rela rela;
3630 bfd_byte *loc;
3631 bfd_vma relative_offset;
3632
3633 /* This symbol has an entry in the procedure linkage table. Set
3634 it up. */
3635 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
3636 {
3637 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3638 htab, h->plt.offset,
3639 eh->ifunc_resolver_address +
3640 eh->ifunc_resolver_section->output_offset +
3641 eh->ifunc_resolver_section->output_section->vma);
3642 /* Do not return yet. Handling of explicit GOT slots of
3643 IFUNC symbols is below. */
3644 }
3645 else
3646 {
3647 if (h->dynindx == -1
3648 || htab->elf.splt == NULL
3649 || htab->elf.sgotplt == NULL
3650 || htab->elf.srelplt == NULL)
3651 abort ();
3652
3653 /* Calc. index no.
3654 Current offset - size first entry / entry size. */
3655 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3656
3657 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3658 addr & GOT addr. */
3659 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3660
3661 /* S390 uses halfwords for relative branch calc! */
3662 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3663 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3664 /* If offset is > 32768, branch to a previous branch
3665 390 can only handle +-64 K jumps. */
3666 if ( -32768 > (int) relative_offset )
3667 relative_offset
3668 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3669
3670 /* Fill in the entry in the procedure linkage table. */
3671 if (!bfd_link_pic (info))
3672 {
3673 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry,
3674 PLT_ENTRY_SIZE);
3675
3676 /* Adjust jump to the first plt entry. */
3677 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3678 htab->elf.splt->contents + h->plt.offset + 20);
3679
3680 /* Push the GOT offset field. */
3681 bfd_put_32 (output_bfd,
3682 (htab->elf.sgotplt->output_section->vma
3683 + htab->elf.sgotplt->output_offset
3684 + got_offset),
3685 htab->elf.splt->contents + h->plt.offset + 24);
3686 }
3687 else if (got_offset < 4096)
3688 {
3689 /* The GOT offset is small enough to be used directly as
3690 displacement. */
3691 memcpy (htab->elf.splt->contents + h->plt.offset,
3692 elf_s390_plt_pic12_entry,
3693 PLT_ENTRY_SIZE);
3694
3695 /* Put in the GOT offset as displacement value. The 0xc000
3696 value comes from the first word of the plt entry. Look
3697 at the elf_s390_plt_pic12_entry content. */
3698 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3699 htab->elf.splt->contents + h->plt.offset + 2);
3700
3701 /* Adjust the jump to the first plt entry. */
3702 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3703 htab->elf.splt->contents + h->plt.offset + 20);
3704 }
3705 else if (got_offset < 32768)
3706 {
3707 /* The GOT offset is too big for a displacement but small
3708 enough to be a signed 16 bit immediate value as it can be
3709 used in an lhi instruction. */
3710 memcpy (htab->elf.splt->contents + h->plt.offset,
3711 elf_s390_plt_pic16_entry,
3712 PLT_ENTRY_SIZE);
3713
3714 /* Put in the GOT offset for the lhi instruction. */
3715 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3716 htab->elf.splt->contents + h->plt.offset + 2);
3717
3718 /* Adjust the jump to the first plt entry. */
3719 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3720 htab->elf.splt->contents + h->plt.offset + 20);
3721 }
3722 else
3723 {
3724 memcpy (htab->elf.splt->contents + h->plt.offset,
3725 elf_s390_plt_pic_entry,
3726 PLT_ENTRY_SIZE);
3727
3728 /* Adjust the jump to the first plt entry. */
3729 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3730 htab->elf.splt->contents + h->plt.offset + 20);
3731
3732 /* Push the GOT offset field. */
3733 bfd_put_32 (output_bfd, got_offset,
3734 htab->elf.splt->contents + h->plt.offset + 24);
3735 }
3736 /* Insert offset into reloc. table here. */
3737 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3738 htab->elf.splt->contents + h->plt.offset + 28);
3739
3740 /* Fill in the entry in the global offset table.
3741 Points to instruction after GOT offset. */
3742 bfd_put_32 (output_bfd,
3743 (htab->elf.splt->output_section->vma
3744 + htab->elf.splt->output_offset
3745 + h->plt.offset
3746 + 12),
3747 htab->elf.sgotplt->contents + got_offset);
3748
3749 /* Fill in the entry in the .rela.plt section. */
3750 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3751 + htab->elf.sgotplt->output_offset
3752 + got_offset);
3753 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3754 rela.r_addend = 0;
3755 loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3756 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3757
3758 if (!h->def_regular)
3759 {
3760 /* Mark the symbol as undefined, rather than as defined in
3761 the .plt section. Leave the value alone. This is a clue
3762 for the dynamic linker, to make function pointer
3763 comparisons work between an application and shared
3764 library. */
3765 sym->st_shndx = SHN_UNDEF;
3766 }
3767 }
3768 }
3769
3770 if (h->got.offset != (bfd_vma) -1
3771 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3772 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3773 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3774 {
3775 Elf_Internal_Rela rela;
3776 bfd_byte *loc;
3777
3778 /* This symbol has an entry in the global offset table. Set it
3779 up. */
3780
3781 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
3782 abort ();
3783
3784 rela.r_offset = (htab->elf.sgot->output_section->vma
3785 + htab->elf.sgot->output_offset
3786 + (h->got.offset &~ (bfd_vma) 1));
3787
3788 /* If this is a static link, or it is a -Bsymbolic link and the
3789 symbol is defined locally or was forced to be local because
3790 of a version file, we just want to emit a RELATIVE reloc.
3791 The entry in the global offset table will already have been
3792 initialized in the relocate_section function. */
3793 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3794 {
3795 if (bfd_link_pic (info))
3796 {
3797 /* An explicit GOT slot usage needs GLOB_DAT. If the
3798 symbol references local the implicit got.iplt slot
3799 will be used and the IRELATIVE reloc has been created
3800 above. */
3801 goto do_glob_dat;
3802 }
3803 else
3804 {
3805 /* For non-shared objects explicit GOT slots must be
3806 filled with the PLT slot address for pointer
3807 equality reasons. */
3808 bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma
3809 + htab->elf.iplt->output_offset
3810 + h->plt.offset),
3811 htab->elf.sgot->contents + h->got.offset);
3812 return TRUE;
3813 }
3814 }
3815 else if (bfd_link_pic (info)
3816 && SYMBOL_REFERENCES_LOCAL (info, h))
3817 {
3818 /* If this is a static link, or it is a -Bsymbolic link and
3819 the symbol is defined locally or was forced to be local
3820 because of a version file, we just want to emit a
3821 RELATIVE reloc. The entry in the global offset table
3822 will already have been initialized in the
3823 relocate_section function. */
3824 if (!h->def_regular)
3825 return FALSE;
3826 BFD_ASSERT((h->got.offset & 1) != 0);
3827 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3828 rela.r_addend = (h->root.u.def.value
3829 + h->root.u.def.section->output_section->vma
3830 + h->root.u.def.section->output_offset);
3831 }
3832 else
3833 {
3834 BFD_ASSERT((h->got.offset & 1) == 0);
3835 do_glob_dat:
3836 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
3837 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
3838 rela.r_addend = 0;
3839 }
3840
3841 loc = htab->elf.srelgot->contents;
3842 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3843 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3844 }
3845
3846 if (h->needs_copy)
3847 {
3848 Elf_Internal_Rela rela;
3849 bfd_byte *loc;
3850
3851 /* This symbols needs a copy reloc. Set it up. */
3852
3853 if (h->dynindx == -1
3854 || (h->root.type != bfd_link_hash_defined
3855 && h->root.type != bfd_link_hash_defweak)
3856 || htab->srelbss == NULL)
3857 abort ();
3858
3859 rela.r_offset = (h->root.u.def.value
3860 + h->root.u.def.section->output_section->vma
3861 + h->root.u.def.section->output_offset);
3862 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3863 rela.r_addend = 0;
3864 loc = htab->srelbss->contents;
3865 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela);
3866 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3867 }
3868
3869 /* Mark some specially defined symbols as absolute. */
3870 if (h == htab->elf.hdynamic
3871 || h == htab->elf.hgot
3872 || h == htab->elf.hplt)
3873 sym->st_shndx = SHN_ABS;
3874
3875 return TRUE;
3876 }
3877
3878 /* Used to decide how to sort relocs in an optimal manner for the
3879 dynamic linker, before writing them out. */
3880
3881 static enum elf_reloc_type_class
3882 elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3883 const asection *rel_sec ATTRIBUTE_UNUSED,
3884 const Elf_Internal_Rela *rela)
3885 {
3886 bfd *abfd = info->output_bfd;
3887 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3888 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3889 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
3890 Elf_Internal_Sym sym;
3891
3892 if (htab->elf.dynsym == NULL
3893 || !bed->s->swap_symbol_in (abfd,
3894 (htab->elf.dynsym->contents
3895 + r_symndx * bed->s->sizeof_sym),
3896 0, &sym))
3897 abort ();
3898
3899 /* Check relocation against STT_GNU_IFUNC symbol. */
3900 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3901 return reloc_class_ifunc;
3902
3903 switch ((int) ELF32_R_TYPE (rela->r_info))
3904 {
3905 case R_390_RELATIVE:
3906 return reloc_class_relative;
3907 case R_390_JMP_SLOT:
3908 return reloc_class_plt;
3909 case R_390_COPY:
3910 return reloc_class_copy;
3911 default:
3912 return reloc_class_normal;
3913 }
3914 }
3915
3916 /* Finish up the dynamic sections. */
3917
3918 static bfd_boolean
3919 elf_s390_finish_dynamic_sections (bfd *output_bfd,
3920 struct bfd_link_info *info)
3921 {
3922 struct elf_s390_link_hash_table *htab;
3923 bfd *dynobj;
3924 asection *sdyn;
3925 bfd *ibfd;
3926 unsigned int i;
3927
3928 htab = elf_s390_hash_table (info);
3929 dynobj = htab->elf.dynobj;
3930 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3931
3932 if (htab->elf.dynamic_sections_created)
3933 {
3934 Elf32_External_Dyn *dyncon, *dynconend;
3935
3936 if (sdyn == NULL || htab->elf.sgot == NULL)
3937 abort ();
3938
3939 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3940 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3941 for (; dyncon < dynconend; dyncon++)
3942 {
3943 Elf_Internal_Dyn dyn;
3944 asection *s;
3945
3946 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3947
3948 switch (dyn.d_tag)
3949 {
3950 default:
3951 continue;
3952
3953 case DT_PLTGOT:
3954 s = htab->elf.sgotplt;
3955 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3956 break;
3957
3958 case DT_JMPREL:
3959 s = htab->elf.srelplt;
3960 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3961 break;
3962
3963 case DT_PLTRELSZ:
3964 dyn.d_un.d_val = htab->elf.srelplt->size + htab->elf.irelplt->size;
3965 break;
3966 }
3967
3968 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3969 }
3970
3971 /* Fill in the special first entry in the procedure linkage table. */
3972 if (htab->elf.splt && htab->elf.splt->size > 0)
3973 {
3974 memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
3975 if (bfd_link_pic (info))
3976 {
3977 memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry,
3978 PLT_FIRST_ENTRY_SIZE);
3979 }
3980 else
3981 {
3982 memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry,
3983 PLT_FIRST_ENTRY_SIZE);
3984 bfd_put_32 (output_bfd,
3985 htab->elf.sgotplt->output_section->vma
3986 + htab->elf.sgotplt->output_offset,
3987 htab->elf.splt->contents + 24);
3988 }
3989 elf_section_data (htab->elf.splt->output_section)
3990 ->this_hdr.sh_entsize = 4;
3991 }
3992
3993 }
3994
3995 if (htab->elf.sgotplt)
3996 {
3997 /* Fill in the first three entries in the global offset table. */
3998 if (htab->elf.sgotplt->size > 0)
3999 {
4000 bfd_put_32 (output_bfd,
4001 (sdyn == NULL ? (bfd_vma) 0
4002 : sdyn->output_section->vma + sdyn->output_offset),
4003 htab->elf.sgotplt->contents);
4004 /* One entry for shared object struct ptr. */
4005 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4);
4006 /* One entry for _dl_runtime_resolve. */
4007 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
4008 }
4009
4010 elf_section_data (htab->elf.sgotplt->output_section)
4011 ->this_hdr.sh_entsize = 4;
4012 }
4013 /* Finish dynamic symbol for local IFUNC symbols. */
4014 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
4015 {
4016 struct plt_entry *local_plt;
4017 Elf_Internal_Sym *isym;
4018 Elf_Internal_Shdr *symtab_hdr;
4019
4020 symtab_hdr = &elf_symtab_hdr (ibfd);
4021
4022 local_plt = elf_s390_local_plt (ibfd);
4023 if (local_plt != NULL)
4024 for (i = 0; i < symtab_hdr->sh_info; i++)
4025 {
4026 if (local_plt[i].plt.offset != (bfd_vma) -1)
4027 {
4028 asection *sec = local_plt[i].sec;
4029 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
4030 if (isym == NULL)
4031 return FALSE;
4032
4033 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4034 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
4035 local_plt[i].plt.offset,
4036 isym->st_value
4037 + sec->output_section->vma
4038 + sec->output_offset);
4039
4040 }
4041 }
4042 }
4043 return TRUE;
4044 }
4045 \f
4046 /* Support for core dump NOTE sections. */
4047
4048 static bfd_boolean
4049 elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note)
4050 {
4051 int offset;
4052 unsigned int size;
4053
4054 switch (note->descsz)
4055 {
4056 default:
4057 return FALSE;
4058
4059 case 224: /* S/390 Linux. */
4060 /* pr_cursig */
4061 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
4062
4063 /* pr_pid */
4064 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
4065
4066 /* pr_reg */
4067 offset = 72;
4068 size = 144;
4069 break;
4070 }
4071
4072 /* Make a ".reg/999" section. */
4073 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
4074 size, note->descpos + offset);
4075 }
4076
4077 static bfd_boolean
4078 elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
4079 {
4080 switch (note->descsz)
4081 {
4082 default:
4083 return FALSE;
4084
4085 case 124: /* sizeof(struct elf_prpsinfo) on s390 */
4086 elf_tdata (abfd)->core->pid
4087 = bfd_get_32 (abfd, note->descdata + 12);
4088 elf_tdata (abfd)->core->program
4089 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
4090 elf_tdata (abfd)->core->command
4091 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
4092 break;
4093 }
4094
4095 /* Note that for some reason, a spurious space is tacked
4096 onto the end of the args in some (at least one anyway)
4097 implementations, so strip it off if it exists. */
4098
4099 {
4100 char *command = elf_tdata (abfd)->core->command;
4101 int n = strlen (command);
4102
4103 if (0 < n && command[n - 1] == ' ')
4104 command[n - 1] = '\0';
4105 }
4106
4107 return TRUE;
4108 }
4109
4110 static char *
4111 elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
4112 int note_type, ...)
4113 {
4114 va_list ap;
4115
4116 switch (note_type)
4117 {
4118 default:
4119 return NULL;
4120
4121 case NT_PRPSINFO:
4122 {
4123 char data[124] = { 0 };
4124 const char *fname, *psargs;
4125
4126 va_start (ap, note_type);
4127 fname = va_arg (ap, const char *);
4128 psargs = va_arg (ap, const char *);
4129 va_end (ap);
4130
4131 strncpy (data + 28, fname, 16);
4132 strncpy (data + 44, psargs, 80);
4133 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
4134 &data, sizeof (data));
4135 }
4136
4137 case NT_PRSTATUS:
4138 {
4139 char data[224] = { 0 };
4140 long pid;
4141 int cursig;
4142 const void *gregs;
4143
4144 va_start (ap, note_type);
4145 pid = va_arg (ap, long);
4146 cursig = va_arg (ap, int);
4147 gregs = va_arg (ap, const void *);
4148 va_end (ap);
4149
4150 bfd_put_16 (abfd, cursig, data + 12);
4151 bfd_put_32 (abfd, pid, data + 24);
4152 memcpy (data + 72, gregs, 144);
4153 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
4154 &data, sizeof (data));
4155 }
4156 }
4157 /* NOTREACHED */
4158 }
4159 \f
4160 /* Return address for Ith PLT stub in section PLT, for relocation REL
4161 or (bfd_vma) -1 if it should not be included. */
4162
4163 static bfd_vma
4164 elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
4165 const arelent *rel ATTRIBUTE_UNUSED)
4166 {
4167 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
4168 }
4169
4170 /* Merge backend specific data from an object file to the output
4171 object file when linking. */
4172
4173 static bfd_boolean
4174 elf32_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4175 {
4176 bfd *obfd = info->output_bfd;
4177
4178 if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
4179 return TRUE;
4180
4181 if (!elf_s390_merge_obj_attributes (ibfd, info))
4182 return FALSE;
4183
4184 elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
4185 return TRUE;
4186 }
4187
4188
4189 #define TARGET_BIG_SYM s390_elf32_vec
4190 #define TARGET_BIG_NAME "elf32-s390"
4191 #define ELF_ARCH bfd_arch_s390
4192 #define ELF_TARGET_ID S390_ELF_DATA
4193 #define ELF_MACHINE_CODE EM_S390
4194 #define ELF_MACHINE_ALT1 EM_S390_OLD
4195 #define ELF_MAXPAGESIZE 0x1000
4196
4197 #define elf_backend_can_gc_sections 1
4198 #define elf_backend_can_refcount 1
4199 #define elf_backend_want_got_plt 1
4200 #define elf_backend_plt_readonly 1
4201 #define elf_backend_want_plt_sym 0
4202 #define elf_backend_got_header_size 12
4203 #define elf_backend_rela_normal 1
4204
4205 #define elf_info_to_howto elf_s390_info_to_howto
4206
4207 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
4208 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
4209 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
4210 #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
4211
4212 #define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
4213
4214 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
4215 #define elf_backend_check_relocs elf_s390_check_relocs
4216 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
4217 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
4218 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4219 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
4220 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
4221 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
4222 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
4223 #define elf_backend_relocate_section elf_s390_relocate_section
4224 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
4225 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4226 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
4227 #define elf_backend_grok_psinfo elf_s390_grok_psinfo
4228 #define elf_backend_write_core_note elf_s390_write_core_note
4229 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
4230 #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
4231 #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
4232
4233 #define bfd_elf32_mkobject elf_s390_mkobject
4234 #define elf_backend_object_p elf_s390_object_p
4235
4236 #include "elf32-target.h"
GDB Binutils - Deliverables
This page took 0.115023 seconds and 5 git commands to generate.