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[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
1128 case R_390_PLT12DBL:
1129 case R_390_PLT16DBL:
1130 case R_390_PLT24DBL:
1131 case R_390_PLT32DBL:
1132 case R_390_PLT32:
1133 case R_390_PLTOFF16:
1134 case R_390_PLTOFF32:
1135 /* This symbol requires a procedure linkage table entry. We
1136 actually build the entry in adjust_dynamic_symbol,
1137 because this might be a case of linking PIC code which is
1138 never referenced by a dynamic object, in which case we
1139 don't need to generate a procedure linkage table entry
1140 after all. */
1141
1142 /* If this is a local symbol, we resolve it directly without
1143 creating a procedure linkage table entry. */
1144 if (h != NULL)
1145 {
1146 h->needs_plt = 1;
1147 h->plt.refcount += 1;
1148 }
1149 break;
1150
1151 case R_390_GOTPLT12:
1152 case R_390_GOTPLT16:
1153 case R_390_GOTPLT20:
1154 case R_390_GOTPLT32:
1155 case R_390_GOTPLTENT:
1156 /* This symbol requires either a procedure linkage table entry
1157 or an entry in the local got. We actually build the entry
1158 in adjust_dynamic_symbol because whether this is really a
1159 global reference can change and with it the fact if we have
1160 to create a plt entry or a local got entry. To be able to
1161 make a once global symbol a local one we have to keep track
1162 of the number of gotplt references that exist for this
1163 symbol. */
1164 if (h != NULL)
1165 {
1166 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1167 h->needs_plt = 1;
1168 h->plt.refcount += 1;
1169 }
1170 else
1171 local_got_refcounts[r_symndx] += 1;
1172 break;
1173
1174 case R_390_TLS_LDM32:
1175 htab->tls_ldm_got.refcount += 1;
1176 break;
1177
1178 case R_390_TLS_IE32:
1179 case R_390_TLS_GOTIE12:
1180 case R_390_TLS_GOTIE20:
1181 case R_390_TLS_GOTIE32:
1182 case R_390_TLS_IEENT:
1183 if (bfd_link_pic (info))
1184 info->flags |= DF_STATIC_TLS;
1185 /* Fall through. */
1186
1187 case R_390_GOT12:
1188 case R_390_GOT16:
1189 case R_390_GOT20:
1190 case R_390_GOT32:
1191 case R_390_GOTENT:
1192 case R_390_TLS_GD32:
1193 /* This symbol requires a global offset table entry. */
1194 switch (r_type)
1195 {
1196 default:
1197 case R_390_GOT12:
1198 case R_390_GOT16:
1199 case R_390_GOT20:
1200 case R_390_GOT32:
1201 case R_390_GOTENT:
1202 tls_type = GOT_NORMAL;
1203 break;
1204 case R_390_TLS_GD32:
1205 tls_type = GOT_TLS_GD;
1206 break;
1207 case R_390_TLS_IE32:
1208 case R_390_TLS_GOTIE32:
1209 tls_type = GOT_TLS_IE;
1210 break;
1211 case R_390_TLS_GOTIE12:
1212 case R_390_TLS_GOTIE20:
1213 case R_390_TLS_IEENT:
1214 tls_type = GOT_TLS_IE_NLT;
1215 break;
1216 }
1217
1218 if (h != NULL)
1219 {
1220 h->got.refcount += 1;
1221 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1222 }
1223 else
1224 {
1225 local_got_refcounts[r_symndx] += 1;
1226 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1227 }
1228 /* If a TLS symbol is accessed using IE at least once,
1229 there is no point to use dynamic model for it. */
1230 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1231 {
1232 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1233 {
1234 (*_bfd_error_handler)
1235 (_("%B: `%s' accessed both as normal and thread local symbol"),
1236 abfd, h->root.root.string);
1237 return FALSE;
1238 }
1239 if (old_tls_type > tls_type)
1240 tls_type = old_tls_type;
1241 }
1242
1243 if (old_tls_type != tls_type)
1244 {
1245 if (h != NULL)
1246 elf_s390_hash_entry (h)->tls_type = tls_type;
1247 else
1248 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1249 }
1250
1251 if (r_type != R_390_TLS_IE32)
1252 break;
1253 /* Fall through. */
1254
1255 case R_390_TLS_LE32:
1256 /* For static linking and executables this reloc will be
1257 calculated at linktime otherwise a TLS_TPOFF runtime
1258 reloc will be generated. */
1259 if (r_type == R_390_TLS_LE32 && bfd_link_pie (info))
1260 break;
1261
1262 if (!bfd_link_pic (info))
1263 break;
1264 info->flags |= DF_STATIC_TLS;
1265 /* Fall through. */
1266
1267 case R_390_8:
1268 case R_390_16:
1269 case R_390_32:
1270 case R_390_PC16:
1271 case R_390_PC12DBL:
1272 case R_390_PC16DBL:
1273 case R_390_PC24DBL:
1274 case R_390_PC32DBL:
1275 case R_390_PC32:
1276 if (h != NULL && bfd_link_executable (info))
1277 {
1278 /* If this reloc is in a read-only section, we might
1279 need a copy reloc. We can't check reliably at this
1280 stage whether the section is read-only, as input
1281 sections have not yet been mapped to output sections.
1282 Tentatively set the flag for now, and correct in
1283 adjust_dynamic_symbol. */
1284 h->non_got_ref = 1;
1285
1286 if (!bfd_link_pic (info))
1287 {
1288 /* We may need a .plt entry if the function this reloc
1289 refers to is in a shared lib. */
1290 h->plt.refcount += 1;
1291 }
1292 }
1293
1294 /* If we are creating a shared library, and this is a reloc
1295 against a global symbol, or a non PC relative reloc
1296 against a local symbol, then we need to copy the reloc
1297 into the shared library. However, if we are linking with
1298 -Bsymbolic, we do not need to copy a reloc against a
1299 global symbol which is defined in an object we are
1300 including in the link (i.e., DEF_REGULAR is set). At
1301 this point we have not seen all the input files, so it is
1302 possible that DEF_REGULAR is not set now but will be set
1303 later (it is never cleared). In case of a weak definition,
1304 DEF_REGULAR may be cleared later by a strong definition in
1305 a shared library. We account for that possibility below by
1306 storing information in the relocs_copied field of the hash
1307 table entry. A similar situation occurs when creating
1308 shared libraries and symbol visibility changes render the
1309 symbol local.
1310
1311 If on the other hand, we are creating an executable, we
1312 may need to keep relocations for symbols satisfied by a
1313 dynamic library if we manage to avoid copy relocs for the
1314 symbol. */
1315 if ((bfd_link_pic (info)
1316 && (sec->flags & SEC_ALLOC) != 0
1317 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
1318 && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL
1319 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
1320 && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL
1321 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
1322 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1323 || (h != NULL
1324 && (! SYMBOLIC_BIND (info, h)
1325 || h->root.type == bfd_link_hash_defweak
1326 || !h->def_regular))))
1327 || (ELIMINATE_COPY_RELOCS
1328 && !bfd_link_pic (info)
1329 && (sec->flags & SEC_ALLOC) != 0
1330 && h != NULL
1331 && (h->root.type == bfd_link_hash_defweak
1332 || !h->def_regular)))
1333 {
1334 struct elf_dyn_relocs *p;
1335 struct elf_dyn_relocs **head;
1336
1337 /* We must copy these reloc types into the output file.
1338 Create a reloc section in dynobj and make room for
1339 this reloc. */
1340 if (sreloc == NULL)
1341 {
1342 if (htab->elf.dynobj == NULL)
1343 htab->elf.dynobj = abfd;
1344
1345 sreloc = _bfd_elf_make_dynamic_reloc_section
1346 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1347
1348 if (sreloc == NULL)
1349 return FALSE;
1350 }
1351
1352 /* If this is a global symbol, we count the number of
1353 relocations we need for this symbol. */
1354 if (h != NULL)
1355 {
1356 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1357 }
1358 else
1359 {
1360 /* Track dynamic relocs needed for local syms too.
1361 We really need local syms available to do this
1362 easily. Oh well. */
1363 asection *s;
1364 void *vpp;
1365
1366 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1367 abfd, r_symndx);
1368 if (isym == NULL)
1369 return FALSE;
1370
1371 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1372 if (s == NULL)
1373 s = sec;
1374
1375 vpp = &elf_section_data (s)->local_dynrel;
1376 head = (struct elf_dyn_relocs **) vpp;
1377 }
1378
1379 p = *head;
1380 if (p == NULL || p->sec != sec)
1381 {
1382 bfd_size_type amt = sizeof *p;
1383
1384 p = ((struct elf_dyn_relocs *)
1385 bfd_alloc (htab->elf.dynobj, amt));
1386 if (p == NULL)
1387 return FALSE;
1388 p->next = *head;
1389 *head = p;
1390 p->sec = sec;
1391 p->count = 0;
1392 p->pc_count = 0;
1393 }
1394
1395 p->count += 1;
1396 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
1397 || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL
1398 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
1399 || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL
1400 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
1401 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1402 p->pc_count += 1;
1403 }
1404 break;
1405
1406 /* This relocation describes the C++ object vtable hierarchy.
1407 Reconstruct it for later use during GC. */
1408 case R_390_GNU_VTINHERIT:
1409 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1410 return FALSE;
1411 break;
1412
1413 /* This relocation describes which C++ vtable entries are actually
1414 used. Record for later use during GC. */
1415 case R_390_GNU_VTENTRY:
1416 BFD_ASSERT (h != NULL);
1417 if (h != NULL
1418 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1419 return FALSE;
1420 break;
1421
1422 default:
1423 break;
1424 }
1425 }
1426
1427 return TRUE;
1428 }
1429
1430 /* Return the section that should be marked against GC for a given
1431 relocation. */
1432
1433 static asection *
1434 elf_s390_gc_mark_hook (asection *sec,
1435 struct bfd_link_info *info,
1436 Elf_Internal_Rela *rel,
1437 struct elf_link_hash_entry *h,
1438 Elf_Internal_Sym *sym)
1439 {
1440 if (h != NULL)
1441 switch (ELF32_R_TYPE (rel->r_info))
1442 {
1443 case R_390_GNU_VTINHERIT:
1444 case R_390_GNU_VTENTRY:
1445 return NULL;
1446 }
1447 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1448
1449 }
1450
1451 /* Update the got entry reference counts for the section being removed. */
1452
1453 static bfd_boolean
1454 elf_s390_gc_sweep_hook (bfd *abfd,
1455 struct bfd_link_info *info,
1456 asection *sec,
1457 const Elf_Internal_Rela *relocs)
1458 {
1459 struct elf_s390_link_hash_table *htab;
1460 Elf_Internal_Shdr *symtab_hdr;
1461 struct elf_link_hash_entry **sym_hashes;
1462 bfd_signed_vma *local_got_refcounts;
1463 const Elf_Internal_Rela *rel, *relend;
1464
1465 if (bfd_link_relocatable (info))
1466 return TRUE;
1467
1468 htab = elf_s390_hash_table (info);
1469 if (htab == NULL)
1470 return FALSE;
1471
1472 elf_section_data (sec)->local_dynrel = NULL;
1473
1474 symtab_hdr = &elf_symtab_hdr (abfd);
1475 sym_hashes = elf_sym_hashes (abfd);
1476 local_got_refcounts = elf_local_got_refcounts (abfd);
1477
1478 relend = relocs + sec->reloc_count;
1479 for (rel = relocs; rel < relend; rel++)
1480 {
1481 unsigned long r_symndx;
1482 unsigned int r_type;
1483 struct elf_link_hash_entry *h = NULL;
1484
1485 r_symndx = ELF32_R_SYM (rel->r_info);
1486 if (r_symndx >= symtab_hdr->sh_info)
1487 {
1488 struct elf_s390_link_hash_entry *eh;
1489 struct elf_dyn_relocs **pp;
1490 struct elf_dyn_relocs *p;
1491
1492 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1493 while (h->root.type == bfd_link_hash_indirect
1494 || h->root.type == bfd_link_hash_warning)
1495 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1496 eh = (struct elf_s390_link_hash_entry *) h;
1497
1498 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1499 if (p->sec == sec)
1500 {
1501 /* Everything must go for SEC. */
1502 *pp = p->next;
1503 break;
1504 }
1505 }
1506 else
1507 {
1508 Elf_Internal_Sym *isym;
1509
1510 /* A local symbol. */
1511 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1512 abfd, r_symndx);
1513 if (isym == NULL)
1514 return FALSE;
1515
1516 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1517 {
1518 struct plt_entry *plt = elf_s390_local_plt (abfd);
1519 if (plt[r_symndx].plt.refcount > 0)
1520 plt[r_symndx].plt.refcount--;
1521 }
1522 }
1523
1524 r_type = ELF32_R_TYPE (rel->r_info);
1525 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1526 switch (r_type)
1527 {
1528 case R_390_TLS_LDM32:
1529 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1530 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1531 break;
1532
1533 case R_390_GOTOFF16:
1534 case R_390_GOTOFF32:
1535 if (h != NULL && s390_is_ifunc_symbol_p (h) && h->def_regular)
1536 {
1537 h->plt.refcount--;
1538 break;
1539 }
1540
1541 case R_390_GOTPC:
1542 case R_390_GOTPCDBL:
1543 break;
1544
1545 case R_390_TLS_GD32:
1546 case R_390_TLS_IE32:
1547 case R_390_TLS_GOTIE12:
1548 case R_390_TLS_GOTIE20:
1549 case R_390_TLS_GOTIE32:
1550 case R_390_TLS_IEENT:
1551 case R_390_GOT12:
1552 case R_390_GOT16:
1553 case R_390_GOT20:
1554 case R_390_GOT32:
1555 case R_390_GOTENT:
1556 if (h != NULL)
1557 {
1558 if (h->got.refcount > 0)
1559 h->got.refcount -= 1;
1560 }
1561 else if (local_got_refcounts != NULL)
1562 {
1563 if (local_got_refcounts[r_symndx] > 0)
1564 local_got_refcounts[r_symndx] -= 1;
1565 }
1566 break;
1567
1568 case R_390_8:
1569 case R_390_12:
1570 case R_390_16:
1571 case R_390_20:
1572 case R_390_32:
1573 case R_390_PC16:
1574 case R_390_PC12DBL:
1575 case R_390_PC16DBL:
1576 case R_390_PC24DBL:
1577 case R_390_PC32DBL:
1578 case R_390_PC32:
1579 if (bfd_link_pic (info))
1580 break;
1581 /* Fall through. */
1582
1583 case R_390_PLT12DBL:
1584 case R_390_PLT16DBL:
1585 case R_390_PLT24DBL:
1586 case R_390_PLT32DBL:
1587 case R_390_PLT32:
1588 case R_390_PLTOFF16:
1589 case R_390_PLTOFF32:
1590 if (h != NULL)
1591 {
1592 if (h->plt.refcount > 0)
1593 h->plt.refcount -= 1;
1594 }
1595 break;
1596
1597 case R_390_GOTPLT12:
1598 case R_390_GOTPLT16:
1599 case R_390_GOTPLT20:
1600 case R_390_GOTPLT32:
1601 case R_390_GOTPLTENT:
1602 if (h != NULL)
1603 {
1604 if (h->plt.refcount > 0)
1605 {
1606 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1607 h->plt.refcount -= 1;
1608 }
1609 }
1610 else if (local_got_refcounts != NULL)
1611 {
1612 if (local_got_refcounts[r_symndx] > 0)
1613 local_got_refcounts[r_symndx] -= 1;
1614 }
1615 break;
1616
1617 default:
1618 break;
1619 }
1620 }
1621
1622 return TRUE;
1623 }
1624
1625 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1626 entry but we found we will not create any. Called when we find we will
1627 not have any PLT for this symbol, by for example
1628 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1629 or elf_s390_size_dynamic_sections if no dynamic sections will be
1630 created (we're only linking static objects). */
1631
1632 static void
1633 elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
1634 {
1635 if (h->elf.root.type == bfd_link_hash_warning)
1636 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1637
1638 if (h->gotplt_refcount <= 0)
1639 return;
1640
1641 /* We simply add the number of gotplt references to the number
1642 * of got references for this symbol. */
1643 h->elf.got.refcount += h->gotplt_refcount;
1644 h->gotplt_refcount = -1;
1645 }
1646
1647 /* Adjust a symbol defined by a dynamic object and referenced by a
1648 regular object. The current definition is in some section of the
1649 dynamic object, but we're not including those sections. We have to
1650 change the definition to something the rest of the link can
1651 understand. */
1652
1653 static bfd_boolean
1654 elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1655 struct elf_link_hash_entry *h)
1656 {
1657 struct elf_s390_link_hash_table *htab;
1658 asection *s;
1659
1660 /* STT_GNU_IFUNC symbol must go through PLT. */
1661 if (s390_is_ifunc_symbol_p (h))
1662 {
1663 /* All local STT_GNU_IFUNC references must be treated as local
1664 calls via local PLT. */
1665 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1666 {
1667 bfd_size_type pc_count = 0, count = 0;
1668 struct elf_dyn_relocs **pp;
1669 struct elf_s390_link_hash_entry *eh;
1670 struct elf_dyn_relocs *p;
1671
1672 eh = (struct elf_s390_link_hash_entry *) h;
1673 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1674 {
1675 pc_count += p->pc_count;
1676 p->count -= p->pc_count;
1677 p->pc_count = 0;
1678 count += p->count;
1679 if (p->count == 0)
1680 *pp = p->next;
1681 else
1682 pp = &p->next;
1683 }
1684
1685 if (pc_count || count)
1686 {
1687 h->needs_plt = 1;
1688 h->non_got_ref = 1;
1689 if (h->plt.refcount <= 0)
1690 h->plt.refcount = 1;
1691 else
1692 h->plt.refcount += 1;
1693 }
1694 }
1695
1696 if (h->plt.refcount <= 0)
1697 {
1698 h->plt.offset = (bfd_vma) -1;
1699 h->needs_plt = 0;
1700 }
1701 return TRUE;
1702 }
1703
1704 /* If this is a function, put it in the procedure linkage table. We
1705 will fill in the contents of the procedure linkage table later
1706 (although we could actually do it here). */
1707 if (h->type == STT_FUNC
1708 || h->needs_plt)
1709 {
1710 if (h->plt.refcount <= 0
1711 || SYMBOL_CALLS_LOCAL (info, h)
1712 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1713 && h->root.type != bfd_link_hash_undefweak))
1714 {
1715 /* This case can occur if we saw a PLT32 reloc in an input
1716 file, but the symbol was never referred to by a dynamic
1717 object, or if all references were garbage collected. In
1718 such a case, we don't actually need to build a procedure
1719 linkage table, and we can just do a PC32 reloc instead. */
1720 h->plt.offset = (bfd_vma) -1;
1721 h->needs_plt = 0;
1722 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1723 }
1724
1725 return TRUE;
1726 }
1727 else
1728 /* It's possible that we incorrectly decided a .plt reloc was
1729 needed for an R_390_PC32 reloc to a non-function sym in
1730 check_relocs. We can't decide accurately between function and
1731 non-function syms in check-relocs; Objects loaded later in
1732 the link may change h->type. So fix it now. */
1733 h->plt.offset = (bfd_vma) -1;
1734
1735 /* If this is a weak symbol, and there is a real definition, the
1736 processor independent code will have arranged for us to see the
1737 real definition first, and we can just use the same value. */
1738 if (h->u.weakdef != NULL)
1739 {
1740 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1741 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1742 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1743 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1744 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1745 h->non_got_ref = h->u.weakdef->non_got_ref;
1746 return TRUE;
1747 }
1748
1749 /* This is a reference to a symbol defined by a dynamic object which
1750 is not a function. */
1751
1752 /* If we are creating a shared library, we must presume that the
1753 only references to the symbol are via the global offset table.
1754 For such cases we need not do anything here; the relocations will
1755 be handled correctly by relocate_section. */
1756 if (bfd_link_pic (info))
1757 return TRUE;
1758
1759 /* If there are no references to this symbol that do not use the
1760 GOT, we don't need to generate a copy reloc. */
1761 if (!h->non_got_ref)
1762 return TRUE;
1763
1764 /* If -z nocopyreloc was given, we won't generate them either. */
1765 if (info->nocopyreloc)
1766 {
1767 h->non_got_ref = 0;
1768 return TRUE;
1769 }
1770
1771 if (ELIMINATE_COPY_RELOCS)
1772 {
1773 struct elf_s390_link_hash_entry * eh;
1774 struct elf_dyn_relocs *p;
1775
1776 eh = (struct elf_s390_link_hash_entry *) h;
1777 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1778 {
1779 s = p->sec->output_section;
1780 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1781 break;
1782 }
1783
1784 /* If we didn't find any dynamic relocs in read-only sections, then
1785 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1786 if (p == NULL)
1787 {
1788 h->non_got_ref = 0;
1789 return TRUE;
1790 }
1791 }
1792
1793 /* We must allocate the symbol in our .dynbss section, which will
1794 become part of the .bss section of the executable. There will be
1795 an entry for this symbol in the .dynsym section. The dynamic
1796 object will contain position independent code, so all references
1797 from the dynamic object to this symbol will go through the global
1798 offset table. The dynamic linker will use the .dynsym entry to
1799 determine the address it must put in the global offset table, so
1800 both the dynamic object and the regular object will refer to the
1801 same memory location for the variable. */
1802
1803 htab = elf_s390_hash_table (info);
1804
1805 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1806 copy the initial value out of the dynamic object and into the
1807 runtime process image. */
1808 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
1809 {
1810 htab->srelbss->size += sizeof (Elf32_External_Rela);
1811 h->needs_copy = 1;
1812 }
1813
1814 s = htab->sdynbss;
1815
1816 return _bfd_elf_adjust_dynamic_copy (info, h, s);
1817 }
1818
1819 /* Allocate space in .plt, .got and associated reloc sections for
1820 dynamic relocs. */
1821
1822 static bfd_boolean
1823 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1824 {
1825 struct bfd_link_info *info;
1826 struct elf_s390_link_hash_table *htab;
1827 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
1828 struct elf_dyn_relocs *p;
1829
1830 if (h->root.type == bfd_link_hash_indirect)
1831 return TRUE;
1832
1833 info = (struct bfd_link_info *) inf;
1834 htab = elf_s390_hash_table (info);
1835
1836 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1837 here if it is defined and referenced in a non-shared object. */
1838 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1839 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
1840 else if (htab->elf.dynamic_sections_created
1841 && h->plt.refcount > 0)
1842 {
1843 /* Make sure this symbol is output as a dynamic symbol.
1844 Undefined weak syms won't yet be marked as dynamic. */
1845 if (h->dynindx == -1
1846 && !h->forced_local)
1847 {
1848 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1849 return FALSE;
1850 }
1851
1852 if (bfd_link_pic (info)
1853 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1854 {
1855 asection *s = htab->elf.splt;
1856
1857 /* If this is the first .plt entry, make room for the special
1858 first entry. */
1859 if (s->size == 0)
1860 s->size += PLT_FIRST_ENTRY_SIZE;
1861
1862 h->plt.offset = s->size;
1863
1864 /* If this symbol is not defined in a regular file, and we are
1865 not generating a shared library, then set the symbol to this
1866 location in the .plt. This is required to make function
1867 pointers compare as equal between the normal executable and
1868 the shared library. */
1869 if (! bfd_link_pic (info)
1870 && !h->def_regular)
1871 {
1872 h->root.u.def.section = s;
1873 h->root.u.def.value = h->plt.offset;
1874 }
1875
1876 /* Make room for this entry. */
1877 s->size += PLT_ENTRY_SIZE;
1878
1879 /* We also need to make an entry in the .got.plt section, which
1880 will be placed in the .got section by the linker script. */
1881 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
1882
1883 /* We also need to make an entry in the .rela.plt section. */
1884 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
1885 }
1886 else
1887 {
1888 h->plt.offset = (bfd_vma) -1;
1889 h->needs_plt = 0;
1890 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1891 }
1892 }
1893 else
1894 {
1895 h->plt.offset = (bfd_vma) -1;
1896 h->needs_plt = 0;
1897 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1898 }
1899
1900 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1901 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1902 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1903 we can save the dynamic TLS relocation. */
1904 if (h->got.refcount > 0
1905 && !bfd_link_pic (info)
1906 && h->dynindx == -1
1907 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1908 {
1909 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1910 /* For the GOTIE access without a literal pool entry the offset has
1911 to be stored somewhere. The immediate value in the instruction
1912 is not bit enough so the value is stored in the got. */
1913 {
1914 h->got.offset = htab->elf.sgot->size;
1915 htab->elf.sgot->size += GOT_ENTRY_SIZE;
1916 }
1917 else
1918 h->got.offset = (bfd_vma) -1;
1919 }
1920 else if (h->got.refcount > 0)
1921 {
1922 asection *s;
1923 bfd_boolean dyn;
1924 int tls_type = elf_s390_hash_entry(h)->tls_type;
1925
1926 /* Make sure this symbol is output as a dynamic symbol.
1927 Undefined weak syms won't yet be marked as dynamic. */
1928 if (h->dynindx == -1
1929 && !h->forced_local)
1930 {
1931 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1932 return FALSE;
1933 }
1934
1935 s = htab->elf.sgot;
1936 h->got.offset = s->size;
1937 s->size += GOT_ENTRY_SIZE;
1938 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1939 if (tls_type == GOT_TLS_GD)
1940 s->size += GOT_ENTRY_SIZE;
1941 dyn = htab->elf.dynamic_sections_created;
1942 /* R_390_TLS_IE32 needs one dynamic relocation,
1943 R_390_TLS_GD32 needs one if local symbol and two if global. */
1944 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1945 || tls_type >= GOT_TLS_IE)
1946 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
1947 else if (tls_type == GOT_TLS_GD)
1948 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela);
1949 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1950 || h->root.type != bfd_link_hash_undefweak)
1951 && (bfd_link_pic (info)
1952 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1953 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
1954 }
1955 else
1956 h->got.offset = (bfd_vma) -1;
1957
1958 if (eh->dyn_relocs == NULL)
1959 return TRUE;
1960
1961 /* In the shared -Bsymbolic case, discard space allocated for
1962 dynamic pc-relative relocs against symbols which turn out to be
1963 defined in regular objects. For the normal shared case, discard
1964 space for pc-relative relocs that have become local due to symbol
1965 visibility changes. */
1966
1967 if (bfd_link_pic (info))
1968 {
1969 if (SYMBOL_CALLS_LOCAL (info, h))
1970 {
1971 struct elf_dyn_relocs **pp;
1972
1973 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1974 {
1975 p->count -= p->pc_count;
1976 p->pc_count = 0;
1977 if (p->count == 0)
1978 *pp = p->next;
1979 else
1980 pp = &p->next;
1981 }
1982 }
1983
1984 /* Also discard relocs on undefined weak syms with non-default
1985 visibility. */
1986 if (eh->dyn_relocs != NULL
1987 && h->root.type == bfd_link_hash_undefweak)
1988 {
1989 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1990 eh->dyn_relocs = NULL;
1991
1992 /* Make sure undefined weak symbols are output as a dynamic
1993 symbol in PIEs. */
1994 else if (h->dynindx == -1
1995 && !h->forced_local)
1996 {
1997 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1998 return FALSE;
1999 }
2000 }
2001 }
2002 else if (ELIMINATE_COPY_RELOCS)
2003 {
2004 /* For the non-shared case, discard space for relocs against
2005 symbols which turn out to need copy relocs or are not
2006 dynamic. */
2007
2008 if (!h->non_got_ref
2009 && ((h->def_dynamic
2010 && !h->def_regular)
2011 || (htab->elf.dynamic_sections_created
2012 && (h->root.type == bfd_link_hash_undefweak
2013 || h->root.type == bfd_link_hash_undefined))))
2014 {
2015 /* Make sure this symbol is output as a dynamic symbol.
2016 Undefined weak syms won't yet be marked as dynamic. */
2017 if (h->dynindx == -1
2018 && !h->forced_local)
2019 {
2020 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2021 return FALSE;
2022 }
2023
2024 /* If that succeeded, we know we'll be keeping all the
2025 relocs. */
2026 if (h->dynindx != -1)
2027 goto keep;
2028 }
2029
2030 eh->dyn_relocs = NULL;
2031
2032 keep: ;
2033 }
2034
2035 /* Finally, allocate space. */
2036 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2037 {
2038 asection *sreloc = elf_section_data (p->sec)->sreloc;
2039
2040 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2041 }
2042
2043 return TRUE;
2044 }
2045
2046 /* Find any dynamic relocs that apply to read-only sections. */
2047
2048 static bfd_boolean
2049 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2050 {
2051 struct elf_s390_link_hash_entry *eh;
2052 struct elf_dyn_relocs *p;
2053
2054 eh = (struct elf_s390_link_hash_entry *) h;
2055 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2056 {
2057 asection *s = p->sec->output_section;
2058
2059 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2060 {
2061 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2062
2063 info->flags |= DF_TEXTREL;
2064
2065 /* Not an error, just cut short the traversal. */
2066 return FALSE;
2067 }
2068 }
2069 return TRUE;
2070 }
2071
2072 /* Set the sizes of the dynamic sections. */
2073
2074 static bfd_boolean
2075 elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2076 struct bfd_link_info *info)
2077 {
2078 struct elf_s390_link_hash_table *htab;
2079 bfd *dynobj;
2080 asection *s;
2081 bfd_boolean relocs;
2082 bfd *ibfd;
2083
2084 htab = elf_s390_hash_table (info);
2085 dynobj = htab->elf.dynobj;
2086 if (dynobj == NULL)
2087 abort ();
2088
2089 if (htab->elf.dynamic_sections_created)
2090 {
2091 /* Set the contents of the .interp section to the interpreter. */
2092 if (bfd_link_executable (info) && !info->nointerp)
2093 {
2094 s = bfd_get_linker_section (dynobj, ".interp");
2095 if (s == NULL)
2096 abort ();
2097 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2098 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2099 }
2100 }
2101
2102 /* Set up .got offsets for local syms, and space for local dynamic
2103 relocs. */
2104 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2105 {
2106 bfd_signed_vma *local_got;
2107 bfd_signed_vma *end_local_got;
2108 char *local_tls_type;
2109 bfd_size_type locsymcount;
2110 Elf_Internal_Shdr *symtab_hdr;
2111 asection *srela;
2112 struct plt_entry *local_plt;
2113 unsigned int i;
2114
2115 if (! is_s390_elf (ibfd))
2116 continue;
2117
2118 for (s = ibfd->sections; s != NULL; s = s->next)
2119 {
2120 struct elf_dyn_relocs *p;
2121
2122 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2123 {
2124 if (!bfd_is_abs_section (p->sec)
2125 && bfd_is_abs_section (p->sec->output_section))
2126 {
2127 /* Input section has been discarded, either because
2128 it is a copy of a linkonce section or due to
2129 linker script /DISCARD/, so we'll be discarding
2130 the relocs too. */
2131 }
2132 else if (p->count != 0)
2133 {
2134 srela = elf_section_data (p->sec)->sreloc;
2135 srela->size += p->count * sizeof (Elf32_External_Rela);
2136 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2137 info->flags |= DF_TEXTREL;
2138 }
2139 }
2140 }
2141
2142 local_got = elf_local_got_refcounts (ibfd);
2143 if (!local_got)
2144 continue;
2145
2146 symtab_hdr = &elf_symtab_hdr (ibfd);
2147 locsymcount = symtab_hdr->sh_info;
2148 end_local_got = local_got + locsymcount;
2149 local_tls_type = elf_s390_local_got_tls_type (ibfd);
2150 s = htab->elf.sgot;
2151 srela = htab->elf.srelgot;
2152 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2153 {
2154 if (*local_got > 0)
2155 {
2156 *local_got = s->size;
2157 s->size += GOT_ENTRY_SIZE;
2158 if (*local_tls_type == GOT_TLS_GD)
2159 s->size += GOT_ENTRY_SIZE;
2160 if (bfd_link_pic (info))
2161 srela->size += sizeof (Elf32_External_Rela);
2162 }
2163 else
2164 *local_got = (bfd_vma) -1;
2165 }
2166 local_plt = elf_s390_local_plt (ibfd);
2167 for (i = 0; i < symtab_hdr->sh_info; i++)
2168 {
2169 if (local_plt[i].plt.refcount > 0)
2170 {
2171 local_plt[i].plt.offset = htab->elf.iplt->size;
2172 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2173 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2174 htab->elf.irelplt->size += RELA_ENTRY_SIZE;
2175 }
2176 else
2177 local_plt[i].plt.offset = (bfd_vma) -1;
2178 }
2179 }
2180
2181 if (htab->tls_ldm_got.refcount > 0)
2182 {
2183 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2184 relocs. */
2185 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2186 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2187 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
2188 }
2189 else
2190 htab->tls_ldm_got.offset = -1;
2191
2192 /* Allocate global sym .plt and .got entries, and space for global
2193 sym dynamic relocs. */
2194 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2195
2196 /* We now have determined the sizes of the various dynamic sections.
2197 Allocate memory for them. */
2198 relocs = FALSE;
2199 for (s = dynobj->sections; s != NULL; s = s->next)
2200 {
2201 if ((s->flags & SEC_LINKER_CREATED) == 0)
2202 continue;
2203
2204 if (s == htab->elf.splt
2205 || s == htab->elf.sgot
2206 || s == htab->elf.sgotplt
2207 || s == htab->sdynbss
2208 || s == htab->elf.iplt
2209 || s == htab->elf.igotplt
2210 || s == htab->irelifunc)
2211 {
2212 /* Strip this section if we don't need it; see the
2213 comment below. */
2214 }
2215 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2216 {
2217 if (s->size != 0)
2218 relocs = TRUE;
2219
2220 /* We use the reloc_count field as a counter if we need
2221 to copy relocs into the output file. */
2222 s->reloc_count = 0;
2223 }
2224 else
2225 {
2226 /* It's not one of our sections, so don't allocate space. */
2227 continue;
2228 }
2229
2230 if (s->size == 0)
2231 {
2232 /* If we don't need this section, strip it from the
2233 output file. This is to handle .rela.bss and
2234 .rela.plt. We must create it in
2235 create_dynamic_sections, because it must be created
2236 before the linker maps input sections to output
2237 sections. The linker does that before
2238 adjust_dynamic_symbol is called, and it is that
2239 function which decides whether anything needs to go
2240 into these sections. */
2241
2242 s->flags |= SEC_EXCLUDE;
2243 continue;
2244 }
2245
2246 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2247 continue;
2248
2249 /* Allocate memory for the section contents. We use bfd_zalloc
2250 here in case unused entries are not reclaimed before the
2251 section's contents are written out. This should not happen,
2252 but this way if it does, we get a R_390_NONE reloc instead
2253 of garbage. */
2254 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2255 if (s->contents == NULL)
2256 return FALSE;
2257 }
2258
2259 if (htab->elf.dynamic_sections_created)
2260 {
2261 /* Add some entries to the .dynamic section. We fill in the
2262 values later, in elf_s390_finish_dynamic_sections, but we
2263 must add the entries now so that we get the correct size for
2264 the .dynamic section. The DT_DEBUG entry is filled in by the
2265 dynamic linker and used by the debugger. */
2266 #define add_dynamic_entry(TAG, VAL) \
2267 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2268
2269 if (bfd_link_executable (info))
2270 {
2271 if (!add_dynamic_entry (DT_DEBUG, 0))
2272 return FALSE;
2273 }
2274
2275 if (htab->elf.splt->size != 0)
2276 {
2277 if (!add_dynamic_entry (DT_PLTGOT, 0)
2278 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2279 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2280 || !add_dynamic_entry (DT_JMPREL, 0))
2281 return FALSE;
2282 }
2283
2284 if (relocs)
2285 {
2286 if (!add_dynamic_entry (DT_RELA, 0)
2287 || !add_dynamic_entry (DT_RELASZ, 0)
2288 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2289 return FALSE;
2290
2291 /* If any dynamic relocs apply to a read-only section,
2292 then we need a DT_TEXTREL entry. */
2293 if ((info->flags & DF_TEXTREL) == 0)
2294 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
2295
2296 if ((info->flags & DF_TEXTREL) != 0)
2297 {
2298 if (!add_dynamic_entry (DT_TEXTREL, 0))
2299 return FALSE;
2300 }
2301 }
2302 }
2303 #undef add_dynamic_entry
2304
2305 return TRUE;
2306 }
2307
2308 /* Return the base VMA address which should be subtracted from real addresses
2309 when resolving @dtpoff relocation.
2310 This is PT_TLS segment p_vaddr. */
2311
2312 static bfd_vma
2313 dtpoff_base (struct bfd_link_info *info)
2314 {
2315 /* If tls_sec is NULL, we should have signalled an error already. */
2316 if (elf_hash_table (info)->tls_sec == NULL)
2317 return 0;
2318 return elf_hash_table (info)->tls_sec->vma;
2319 }
2320
2321 /* Return the relocation value for @tpoff relocation
2322 if STT_TLS virtual address is ADDRESS. */
2323
2324 static bfd_vma
2325 tpoff (struct bfd_link_info *info, bfd_vma address)
2326 {
2327 struct elf_link_hash_table *htab = elf_hash_table (info);
2328
2329 /* If tls_sec is NULL, we should have signalled an error already. */
2330 if (htab->tls_sec == NULL)
2331 return 0;
2332 return htab->tls_size + htab->tls_sec->vma - address;
2333 }
2334
2335 /* Complain if TLS instruction relocation is against an invalid
2336 instruction. */
2337
2338 static void
2339 invalid_tls_insn (bfd *input_bfd,
2340 asection *input_section,
2341 Elf_Internal_Rela *rel)
2342 {
2343 reloc_howto_type *howto;
2344
2345 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2346 (*_bfd_error_handler)
2347 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2348 input_bfd,
2349 input_section,
2350 (long) rel->r_offset,
2351 howto->name);
2352 bfd_set_error (bfd_error_bad_value);
2353 }
2354
2355 /* Relocate a 390 ELF section. */
2356
2357 static bfd_boolean
2358 elf_s390_relocate_section (bfd *output_bfd,
2359 struct bfd_link_info *info,
2360 bfd *input_bfd,
2361 asection *input_section,
2362 bfd_byte *contents,
2363 Elf_Internal_Rela *relocs,
2364 Elf_Internal_Sym *local_syms,
2365 asection **local_sections)
2366 {
2367 struct elf_s390_link_hash_table *htab;
2368 Elf_Internal_Shdr *symtab_hdr;
2369 struct elf_link_hash_entry **sym_hashes;
2370 bfd_vma *local_got_offsets;
2371 Elf_Internal_Rela *rel;
2372 Elf_Internal_Rela *relend;
2373
2374 BFD_ASSERT (is_s390_elf (input_bfd));
2375
2376 htab = elf_s390_hash_table (info);
2377 symtab_hdr = &elf_symtab_hdr (input_bfd);
2378 sym_hashes = elf_sym_hashes (input_bfd);
2379 local_got_offsets = elf_local_got_offsets (input_bfd);
2380
2381 rel = relocs;
2382 relend = relocs + input_section->reloc_count;
2383 for (; rel < relend; rel++)
2384 {
2385 unsigned int r_type;
2386 reloc_howto_type *howto;
2387 unsigned long r_symndx;
2388 struct elf_link_hash_entry *h;
2389 Elf_Internal_Sym *sym;
2390 asection *sec;
2391 bfd_vma off;
2392 bfd_vma relocation;
2393 bfd_boolean unresolved_reloc;
2394 bfd_reloc_status_type r;
2395 int tls_type;
2396 asection *base_got = htab->elf.sgot;
2397
2398 r_type = ELF32_R_TYPE (rel->r_info);
2399 if (r_type == (int) R_390_GNU_VTINHERIT
2400 || r_type == (int) R_390_GNU_VTENTRY)
2401 continue;
2402 if (r_type >= (int) R_390_max)
2403 {
2404 bfd_set_error (bfd_error_bad_value);
2405 return FALSE;
2406 }
2407
2408 howto = elf_howto_table + r_type;
2409 r_symndx = ELF32_R_SYM (rel->r_info);
2410
2411 h = NULL;
2412 sym = NULL;
2413 sec = NULL;
2414 unresolved_reloc = FALSE;
2415 if (r_symndx < symtab_hdr->sh_info)
2416 {
2417 sym = local_syms + r_symndx;
2418 sec = local_sections[r_symndx];
2419 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2420 {
2421 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2422 if (local_plt == NULL)
2423 return FALSE;
2424
2425 /* Address of the PLT slot. */
2426 relocation = (htab->elf.iplt->output_section->vma
2427 + htab->elf.iplt->output_offset
2428 + local_plt[r_symndx].plt.offset);
2429
2430 switch (r_type)
2431 {
2432 case R_390_PLTOFF16:
2433 case R_390_PLTOFF32:
2434 relocation -= htab->elf.sgot->output_section->vma;
2435 break;
2436 case R_390_GOTPLT12:
2437 case R_390_GOTPLT16:
2438 case R_390_GOTPLT20:
2439 case R_390_GOTPLT32:
2440 case R_390_GOTPLTENT:
2441 case R_390_GOT12:
2442 case R_390_GOT16:
2443 case R_390_GOT20:
2444 case R_390_GOT32:
2445 case R_390_GOTENT:
2446 {
2447 /* Write the PLT slot address into the GOT slot. */
2448 bfd_put_32 (output_bfd, relocation,
2449 htab->elf.sgot->contents +
2450 local_got_offsets[r_symndx]);
2451 relocation = (local_got_offsets[r_symndx] +
2452 htab->elf.sgot->output_offset);
2453
2454 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2455 relocation += htab->elf.sgot->output_section->vma;
2456 break;
2457 }
2458 default:
2459 break;
2460 }
2461 /* The output section is needed later in
2462 finish_dynamic_section when creating the dynamic
2463 relocation. */
2464 local_plt[r_symndx].sec = sec;
2465 goto do_relocation;
2466 }
2467 else
2468 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2469 }
2470 else
2471 {
2472 bfd_boolean warned ATTRIBUTE_UNUSED;
2473 bfd_boolean ignored ATTRIBUTE_UNUSED;
2474
2475 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2476 r_symndx, symtab_hdr, sym_hashes,
2477 h, sec, relocation,
2478 unresolved_reloc, warned, ignored);
2479 }
2480
2481 if (sec != NULL && discarded_section (sec))
2482 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2483 rel, 1, relend, howto, 0, contents);
2484
2485 if (bfd_link_relocatable (info))
2486 continue;
2487
2488 switch (r_type)
2489 {
2490 case R_390_GOTPLT12:
2491 case R_390_GOTPLT16:
2492 case R_390_GOTPLT20:
2493 case R_390_GOTPLT32:
2494 case R_390_GOTPLTENT:
2495 /* There are three cases for a GOTPLT relocation. 1) The
2496 relocation is against the jump slot entry of a plt that
2497 will get emitted to the output file. 2) The relocation
2498 is against the jump slot of a plt entry that has been
2499 removed. elf_s390_adjust_gotplt has created a GOT entry
2500 as replacement. 3) The relocation is against a local symbol.
2501 Cases 2) and 3) are the same as the GOT relocation code
2502 so we just have to test for case 1 and fall through for
2503 the other two. */
2504 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2505 {
2506 bfd_vma plt_index;
2507
2508 if (s390_is_ifunc_symbol_p (h))
2509 {
2510 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2511 relocation = (plt_index * GOT_ENTRY_SIZE +
2512 htab->elf.igotplt->output_offset);
2513 if (r_type == R_390_GOTPLTENT)
2514 relocation += htab->elf.igotplt->output_section->vma;
2515 }
2516 else
2517 {
2518 /* Calc. index no.
2519 Current offset - size first entry / entry size. */
2520 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2521 PLT_ENTRY_SIZE;
2522
2523 /* Offset in GOT is PLT index plus GOT headers(3)
2524 times 4, addr & GOT addr. */
2525 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2526 if (r_type == R_390_GOTPLTENT)
2527 relocation += htab->elf.sgot->output_section->vma;
2528 }
2529 unresolved_reloc = FALSE;
2530
2531 }
2532 /* Fall through. */
2533
2534 case R_390_GOT12:
2535 case R_390_GOT16:
2536 case R_390_GOT20:
2537 case R_390_GOT32:
2538 case R_390_GOTENT:
2539 /* Relocation is to the entry for this symbol in the global
2540 offset table. */
2541 if (base_got == NULL)
2542 abort ();
2543
2544 if (h != NULL)
2545 {
2546 bfd_boolean dyn;
2547
2548 off = h->got.offset;
2549 dyn = htab->elf.dynamic_sections_created;
2550
2551 if (s390_is_ifunc_symbol_p (h))
2552 {
2553 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2554 if (off == (bfd_vma)-1)
2555 {
2556 /* No explicit GOT usage so redirect to the
2557 got.iplt slot. */
2558 base_got = htab->elf.igotplt;
2559 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2560 }
2561 else
2562 {
2563 /* Explicit GOT slots must contain the address
2564 of the PLT slot. This will be handled in
2565 finish_dynamic_symbol. */
2566 }
2567 }
2568 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2569 bfd_link_pic (info),
2570 h)
2571 || (bfd_link_pic (info)
2572 && SYMBOL_REFERENCES_LOCAL (info, h))
2573 || (ELF_ST_VISIBILITY (h->other)
2574 && h->root.type == bfd_link_hash_undefweak))
2575
2576 {
2577 /* This is actually a static link, or it is a
2578 -Bsymbolic link and the symbol is defined
2579 locally, or the symbol was forced to be local
2580 because of a version file. We must initialize
2581 this entry in the global offset table. Since the
2582 offset must always be a multiple of 2, we use the
2583 least significant bit to record whether we have
2584 initialized it already.
2585
2586 When doing a dynamic link, we create a .rel.got
2587 relocation entry to initialize the value. This
2588 is done in the finish_dynamic_symbol routine. */
2589 if ((off & 1) != 0)
2590 off &= ~1;
2591 else
2592 {
2593 bfd_put_32 (output_bfd, relocation,
2594 base_got->contents + off);
2595 h->got.offset |= 1;
2596 }
2597
2598 if ((h->def_regular
2599 && bfd_link_pic (info)
2600 && SYMBOL_REFERENCES_LOCAL (info, h))
2601 /* lrl rx,sym@GOTENT -> larl rx, sym */
2602 && ((r_type == R_390_GOTENT
2603 && (bfd_get_16 (input_bfd,
2604 contents + rel->r_offset - 2)
2605 & 0xff0f) == 0xc40d)
2606 /* ly rx, sym@GOT(r12) -> larl rx, sym */
2607 || (r_type == R_390_GOT20
2608 && (bfd_get_32 (input_bfd,
2609 contents + rel->r_offset - 2)
2610 & 0xff00f000) == 0xe300c000
2611 && bfd_get_8 (input_bfd,
2612 contents + rel->r_offset + 3) == 0x58)))
2613 {
2614 unsigned short new_insn =
2615 (0xc000 | (bfd_get_8 (input_bfd,
2616 contents + rel->r_offset - 1) & 0xf0));
2617 bfd_put_16 (output_bfd, new_insn,
2618 contents + rel->r_offset - 2);
2619 r_type = R_390_PC32DBL;
2620 rel->r_addend = 2;
2621 howto = elf_howto_table + r_type;
2622 relocation = h->root.u.def.value
2623 + h->root.u.def.section->output_section->vma
2624 + h->root.u.def.section->output_offset;
2625 goto do_relocation;
2626 }
2627 }
2628 else
2629 unresolved_reloc = FALSE;
2630 }
2631 else
2632 {
2633 if (local_got_offsets == NULL)
2634 abort ();
2635
2636 off = local_got_offsets[r_symndx];
2637
2638 /* The offset must always be a multiple of 4. We use
2639 the least significant bit to record whether we have
2640 already generated the necessary reloc. */
2641 if ((off & 1) != 0)
2642 off &= ~1;
2643 else
2644 {
2645 bfd_put_32 (output_bfd, relocation,
2646 htab->elf.sgot->contents + off);
2647
2648 if (bfd_link_pic (info))
2649 {
2650 asection *srelgot;
2651 Elf_Internal_Rela outrel;
2652 bfd_byte *loc;
2653
2654 srelgot = htab->elf.srelgot;
2655 if (srelgot == NULL)
2656 abort ();
2657
2658 outrel.r_offset = (htab->elf.sgot->output_section->vma
2659 + htab->elf.sgot->output_offset
2660 + off);
2661 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2662 outrel.r_addend = relocation;
2663 loc = srelgot->contents;
2664 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
2665 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2666 }
2667
2668 local_got_offsets[r_symndx] |= 1;
2669 }
2670 }
2671
2672 if (off >= (bfd_vma) -2)
2673 abort ();
2674
2675 relocation = base_got->output_offset + off;
2676
2677 /* For @GOTENT the relocation is against the offset between
2678 the instruction and the symbols entry in the GOT and not
2679 between the start of the GOT and the symbols entry. We
2680 add the vma of the GOT to get the correct value. */
2681 if ( r_type == R_390_GOTENT
2682 || r_type == R_390_GOTPLTENT)
2683 relocation += base_got->output_section->vma;
2684
2685 break;
2686
2687 case R_390_GOTOFF16:
2688 case R_390_GOTOFF32:
2689 /* Relocation is relative to the start of the global offset
2690 table. */
2691
2692 if (h != NULL
2693 && s390_is_ifunc_symbol_p (h)
2694 && h->def_regular
2695 && !bfd_link_executable (info))
2696 {
2697 relocation = (htab->elf.iplt->output_section->vma
2698 + htab->elf.iplt->output_offset
2699 + h->plt.offset
2700 - htab->elf.sgot->output_section->vma);
2701 goto do_relocation;
2702 }
2703
2704 /* Note that sgot->output_offset is not involved in this
2705 calculation. We always want the start of .got. If we
2706 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2707 permitted by the ABI, we might have to change this
2708 calculation. */
2709 relocation -= htab->elf.sgot->output_section->vma;
2710 break;
2711
2712 case R_390_GOTPC:
2713 case R_390_GOTPCDBL:
2714 /* Use global offset table as symbol value. */
2715 relocation = htab->elf.sgot->output_section->vma;
2716 unresolved_reloc = FALSE;
2717 break;
2718
2719 case R_390_PLT12DBL:
2720 case R_390_PLT16DBL:
2721 case R_390_PLT24DBL:
2722 case R_390_PLT32DBL:
2723 case R_390_PLT32:
2724 /* Relocation is to the entry for this symbol in the
2725 procedure linkage table. */
2726
2727 /* Resolve a PLT32 reloc against a local symbol directly,
2728 without using the procedure linkage table. */
2729 if (h == NULL)
2730 break;
2731
2732 if (h->plt.offset == (bfd_vma) -1
2733 || (htab->elf.splt == NULL && htab->elf.iplt == NULL))
2734 {
2735 /* We didn't make a PLT entry for this symbol. This
2736 happens when statically linking PIC code, or when
2737 using -Bsymbolic. */
2738 break;
2739 }
2740
2741 if (s390_is_ifunc_symbol_p (h))
2742 relocation = (htab->elf.iplt->output_section->vma
2743 + htab->elf.iplt->output_offset
2744 + h->plt.offset);
2745 else
2746 relocation = (htab->elf.splt->output_section->vma
2747 + htab->elf.splt->output_offset
2748 + h->plt.offset);
2749 unresolved_reloc = FALSE;
2750 break;
2751
2752 case R_390_PLTOFF16:
2753 case R_390_PLTOFF32:
2754 /* Relocation is to the entry for this symbol in the
2755 procedure linkage table relative to the start of the GOT. */
2756
2757 /* For local symbols or if we didn't make a PLT entry for
2758 this symbol resolve the symbol directly. */
2759 if (h == NULL
2760 || h->plt.offset == (bfd_vma) -1
2761 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
2762 {
2763 relocation -= htab->elf.sgot->output_section->vma;
2764 break;
2765 }
2766
2767 if (s390_is_ifunc_symbol_p (h))
2768 relocation = (htab->elf.iplt->output_section->vma
2769 + htab->elf.iplt->output_offset
2770 + h->plt.offset
2771 - htab->elf.sgot->output_section->vma);
2772 else
2773 relocation = (htab->elf.splt->output_section->vma
2774 + htab->elf.splt->output_offset
2775 + h->plt.offset
2776 - htab->elf.sgot->output_section->vma);
2777 unresolved_reloc = FALSE;
2778 break;
2779
2780 case R_390_PC16:
2781 case R_390_PC12DBL:
2782 case R_390_PC16DBL:
2783 case R_390_PC24DBL:
2784 case R_390_PC32DBL:
2785 case R_390_PC32:
2786 if (h != NULL
2787 && s390_is_ifunc_symbol_p (h)
2788 && h->def_regular
2789 && !bfd_link_executable (info))
2790 {
2791 /* This will not work our if the function does not
2792 happen to set up the GOT pointer for some other
2793 reason. 31 bit PLT entries require r12 to hold the
2794 GOT pointer.
2795 FIXME: Implement an errorcheck.
2796 NOTE: It will work when brasl is not available
2797 (e.g. with -m31 -march=g5) since a local function
2798 call then does use GOTOFF which implies r12 being set
2799 up. */
2800 relocation = (htab->elf.iplt->output_section->vma
2801 + htab->elf.iplt->output_offset
2802 + h ->plt.offset);
2803 goto do_relocation;
2804 }
2805
2806 case R_390_8:
2807 case R_390_16:
2808 case R_390_32:
2809 if (h != NULL
2810 && s390_is_ifunc_symbol_p (h)
2811 && h->def_regular)
2812 {
2813 if (!bfd_link_pic (info) || !h->non_got_ref)
2814 {
2815 /* For a non-shared object STT_GNU_IFUNC symbol must
2816 go through PLT. */
2817 relocation = (htab->elf.iplt->output_section->vma
2818 + htab->elf.iplt->output_offset
2819 + h ->plt.offset);
2820 goto do_relocation;
2821 }
2822 else
2823 {
2824 /* For shared objects a runtime relocation is needed. */
2825
2826 Elf_Internal_Rela outrel;
2827 asection *sreloc;
2828
2829 /* Need a dynamic relocation to get the real function
2830 address. */
2831 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2832 info,
2833 input_section,
2834 rel->r_offset);
2835 if (outrel.r_offset == (bfd_vma) -1
2836 || outrel.r_offset == (bfd_vma) -2)
2837 abort ();
2838
2839 outrel.r_offset += (input_section->output_section->vma
2840 + input_section->output_offset);
2841
2842 if (h->dynindx == -1
2843 || h->forced_local
2844 || bfd_link_executable (info))
2845 {
2846 /* This symbol is resolved locally. */
2847 outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
2848 outrel.r_addend = (h->root.u.def.value
2849 + h->root.u.def.section->output_section->vma
2850 + h->root.u.def.section->output_offset);
2851 }
2852 else
2853 {
2854 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2855 outrel.r_addend = 0;
2856 }
2857
2858 sreloc = htab->elf.irelifunc;
2859 elf_append_rela (output_bfd, sreloc, &outrel);
2860
2861 /* If this reloc is against an external symbol, we
2862 do not want to fiddle with the addend. Otherwise,
2863 we need to include the symbol value so that it
2864 becomes an addend for the dynamic reloc. For an
2865 internal symbol, we have updated addend. */
2866 continue;
2867 }
2868 }
2869
2870 if ((input_section->flags & SEC_ALLOC) == 0)
2871 break;
2872
2873 if ((bfd_link_pic (info)
2874 && (h == NULL
2875 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2876 || h->root.type != bfd_link_hash_undefweak)
2877 && ((r_type != R_390_PC16
2878 && r_type != R_390_PC12DBL
2879 && r_type != R_390_PC16DBL
2880 && r_type != R_390_PC24DBL
2881 && r_type != R_390_PC32DBL
2882 && r_type != R_390_PC32)
2883 || !SYMBOL_CALLS_LOCAL (info, h)))
2884 || (ELIMINATE_COPY_RELOCS
2885 && !bfd_link_pic (info)
2886 && h != NULL
2887 && h->dynindx != -1
2888 && !h->non_got_ref
2889 && ((h->def_dynamic
2890 && !h->def_regular)
2891 || h->root.type == bfd_link_hash_undefweak
2892 || h->root.type == bfd_link_hash_undefined)))
2893 {
2894 Elf_Internal_Rela outrel;
2895 bfd_boolean skip, relocate;
2896 asection *sreloc;
2897 bfd_byte *loc;
2898
2899 /* When generating a shared object, these relocations
2900 are copied into the output file to be resolved at run
2901 time. */
2902
2903 skip = FALSE;
2904 relocate = FALSE;
2905
2906 outrel.r_offset =
2907 _bfd_elf_section_offset (output_bfd, info, input_section,
2908 rel->r_offset);
2909 if (outrel.r_offset == (bfd_vma) -1)
2910 skip = TRUE;
2911 else if (outrel.r_offset == (bfd_vma) -2)
2912 skip = TRUE, relocate = TRUE;
2913 outrel.r_offset += (input_section->output_section->vma
2914 + input_section->output_offset);
2915
2916 if (skip)
2917 memset (&outrel, 0, sizeof outrel);
2918 else if (h != NULL
2919 && h->dynindx != -1
2920 && (r_type == R_390_PC16
2921 || r_type == R_390_PC12DBL
2922 || r_type == R_390_PC16DBL
2923 || r_type == R_390_PC24DBL
2924 || r_type == R_390_PC32DBL
2925 || r_type == R_390_PC32
2926 || !bfd_link_pic (info)
2927 || !SYMBOLIC_BIND (info, h)
2928 || !h->def_regular))
2929 {
2930 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2931 outrel.r_addend = rel->r_addend;
2932 }
2933 else
2934 {
2935 /* This symbol is local, or marked to become local. */
2936 outrel.r_addend = relocation + rel->r_addend;
2937 if (r_type == R_390_32)
2938 {
2939 relocate = TRUE;
2940 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2941 }
2942 else
2943 {
2944 long sindx;
2945
2946 if (bfd_is_abs_section (sec))
2947 sindx = 0;
2948 else if (sec == NULL || sec->owner == NULL)
2949 {
2950 bfd_set_error(bfd_error_bad_value);
2951 return FALSE;
2952 }
2953 else
2954 {
2955 asection *osec;
2956
2957 osec = sec->output_section;
2958 sindx = elf_section_data (osec)->dynindx;
2959 if (sindx == 0)
2960 {
2961 osec = htab->elf.text_index_section;
2962 sindx = elf_section_data (osec)->dynindx;
2963 }
2964 BFD_ASSERT (sindx != 0);
2965
2966 /* We are turning this relocation into one
2967 against a section symbol, so subtract out
2968 the output section's address but not the
2969 offset of the input section in the output
2970 section. */
2971 outrel.r_addend -= osec->vma;
2972 }
2973 outrel.r_info = ELF32_R_INFO (sindx, r_type);
2974 }
2975 }
2976
2977 sreloc = elf_section_data (input_section)->sreloc;
2978 if (sreloc == NULL)
2979 abort ();
2980
2981 loc = sreloc->contents;
2982 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2983 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2984
2985 /* If this reloc is against an external symbol, we do
2986 not want to fiddle with the addend. Otherwise, we
2987 need to include the symbol value so that it becomes
2988 an addend for the dynamic reloc. */
2989 if (! relocate)
2990 continue;
2991 }
2992 break;
2993
2994 /* Relocations for tls literal pool entries. */
2995 case R_390_TLS_IE32:
2996 if (bfd_link_pic (info))
2997 {
2998 Elf_Internal_Rela outrel;
2999 asection *sreloc;
3000 bfd_byte *loc;
3001
3002 outrel.r_offset = rel->r_offset
3003 + input_section->output_section->vma
3004 + input_section->output_offset;
3005 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3006 sreloc = elf_section_data (input_section)->sreloc;
3007 if (sreloc == NULL)
3008 abort ();
3009 loc = sreloc->contents;
3010 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3011 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3012 }
3013 /* Fall through. */
3014
3015 case R_390_TLS_GD32:
3016 case R_390_TLS_GOTIE32:
3017 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
3018 tls_type = GOT_UNKNOWN;
3019 if (h == NULL && local_got_offsets)
3020 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3021 else if (h != NULL)
3022 {
3023 tls_type = elf_s390_hash_entry(h)->tls_type;
3024 if (!bfd_link_pic (info)
3025 && h->dynindx == -1
3026 && tls_type >= GOT_TLS_IE)
3027 r_type = R_390_TLS_LE32;
3028 }
3029 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
3030 r_type = R_390_TLS_IE32;
3031
3032 if (r_type == R_390_TLS_LE32)
3033 {
3034 /* This relocation gets optimized away by the local exec
3035 access optimization. */
3036 BFD_ASSERT (! unresolved_reloc);
3037 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3038 contents + rel->r_offset);
3039 continue;
3040 }
3041
3042 if (htab->elf.sgot == NULL)
3043 abort ();
3044
3045 if (h != NULL)
3046 off = h->got.offset;
3047 else
3048 {
3049 if (local_got_offsets == NULL)
3050 abort ();
3051
3052 off = local_got_offsets[r_symndx];
3053 }
3054
3055 emit_tls_relocs:
3056
3057 if ((off & 1) != 0)
3058 off &= ~1;
3059 else
3060 {
3061 Elf_Internal_Rela outrel;
3062 bfd_byte *loc;
3063 int dr_type, indx;
3064
3065 if (htab->elf.srelgot == NULL)
3066 abort ();
3067
3068 outrel.r_offset = (htab->elf.sgot->output_section->vma
3069 + htab->elf.sgot->output_offset + off);
3070
3071 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3072 if (r_type == R_390_TLS_GD32)
3073 dr_type = R_390_TLS_DTPMOD;
3074 else
3075 dr_type = R_390_TLS_TPOFF;
3076 if (dr_type == R_390_TLS_TPOFF && indx == 0)
3077 outrel.r_addend = relocation - dtpoff_base (info);
3078 else
3079 outrel.r_addend = 0;
3080 outrel.r_info = ELF32_R_INFO (indx, dr_type);
3081 loc = htab->elf.srelgot->contents;
3082 loc += htab->elf.srelgot->reloc_count++
3083 * sizeof (Elf32_External_Rela);
3084 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3085
3086 if (r_type == R_390_TLS_GD32)
3087 {
3088 if (indx == 0)
3089 {
3090 BFD_ASSERT (! unresolved_reloc);
3091 bfd_put_32 (output_bfd,
3092 relocation - dtpoff_base (info),
3093 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3094 }
3095 else
3096 {
3097 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
3098 outrel.r_offset += GOT_ENTRY_SIZE;
3099 outrel.r_addend = 0;
3100 htab->elf.srelgot->reloc_count++;
3101 loc += sizeof (Elf32_External_Rela);
3102 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3103 }
3104 }
3105
3106 if (h != NULL)
3107 h->got.offset |= 1;
3108 else
3109 local_got_offsets[r_symndx] |= 1;
3110 }
3111
3112 if (off >= (bfd_vma) -2)
3113 abort ();
3114 if (r_type == ELF32_R_TYPE (rel->r_info))
3115 {
3116 relocation = htab->elf.sgot->output_offset + off;
3117 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
3118 relocation += htab->elf.sgot->output_section->vma;
3119 unresolved_reloc = FALSE;
3120 }
3121 else
3122 {
3123 bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off,
3124 contents + rel->r_offset);
3125 continue;
3126 }
3127 break;
3128
3129 case R_390_TLS_GOTIE12:
3130 case R_390_TLS_GOTIE20:
3131 case R_390_TLS_IEENT:
3132 if (h == NULL)
3133 {
3134 if (local_got_offsets == NULL)
3135 abort();
3136 off = local_got_offsets[r_symndx];
3137 if (bfd_link_pic (info))
3138 goto emit_tls_relocs;
3139 }
3140 else
3141 {
3142 off = h->got.offset;
3143 tls_type = elf_s390_hash_entry(h)->tls_type;
3144 if (bfd_link_pic (info)
3145 || h->dynindx != -1
3146 || tls_type < GOT_TLS_IE)
3147 goto emit_tls_relocs;
3148 }
3149
3150 if (htab->elf.sgot == NULL)
3151 abort ();
3152
3153 BFD_ASSERT (! unresolved_reloc);
3154 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3155 htab->elf.sgot->contents + off);
3156 relocation = htab->elf.sgot->output_offset + off;
3157 if (r_type == R_390_TLS_IEENT)
3158 relocation += htab->elf.sgot->output_section->vma;
3159 unresolved_reloc = FALSE;
3160 break;
3161
3162 case R_390_TLS_LDM32:
3163 if (! bfd_link_pic (info))
3164 /* The literal pool entry this relocation refers to gets ignored
3165 by the optimized code of the local exec model. Do nothing
3166 and the value will turn out zero. */
3167 continue;
3168
3169 if (htab->elf.sgot == NULL)
3170 abort ();
3171
3172 off = htab->tls_ldm_got.offset;
3173 if (off & 1)
3174 off &= ~1;
3175 else
3176 {
3177 Elf_Internal_Rela outrel;
3178 bfd_byte *loc;
3179
3180 if (htab->elf.srelgot == NULL)
3181 abort ();
3182
3183 outrel.r_offset = (htab->elf.sgot->output_section->vma
3184 + htab->elf.sgot->output_offset + off);
3185
3186 bfd_put_32 (output_bfd, 0,
3187 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3188 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
3189 outrel.r_addend = 0;
3190 loc = htab->elf.srelgot->contents;
3191 loc += htab->elf.srelgot->reloc_count++
3192 * sizeof (Elf32_External_Rela);
3193 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3194 htab->tls_ldm_got.offset |= 1;
3195 }
3196 relocation = htab->elf.sgot->output_offset + off;
3197 unresolved_reloc = FALSE;
3198 break;
3199
3200 case R_390_TLS_LE32:
3201 if (bfd_link_dll (info))
3202 {
3203 /* Linking a shared library with non-fpic code requires
3204 a R_390_TLS_TPOFF relocation. */
3205 Elf_Internal_Rela outrel;
3206 asection *sreloc;
3207 bfd_byte *loc;
3208 int indx;
3209
3210 outrel.r_offset = rel->r_offset
3211 + input_section->output_section->vma
3212 + input_section->output_offset;
3213 if (h != NULL && h->dynindx != -1)
3214 indx = h->dynindx;
3215 else
3216 indx = 0;
3217 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
3218 if (indx == 0)
3219 outrel.r_addend = relocation - dtpoff_base (info);
3220 else
3221 outrel.r_addend = 0;
3222 sreloc = elf_section_data (input_section)->sreloc;
3223 if (sreloc == NULL)
3224 abort ();
3225 loc = sreloc->contents;
3226 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3227 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3228 }
3229 else
3230 {
3231 BFD_ASSERT (! unresolved_reloc);
3232 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3233 contents + rel->r_offset);
3234 }
3235 continue;
3236
3237 case R_390_TLS_LDO32:
3238 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
3239 relocation -= dtpoff_base (info);
3240 else
3241 /* When converting LDO to LE, we must negate. */
3242 relocation = -tpoff (info, relocation);
3243 break;
3244
3245 /* Relocations for tls instructions. */
3246 case R_390_TLS_LOAD:
3247 case R_390_TLS_GDCALL:
3248 case R_390_TLS_LDCALL:
3249 tls_type = GOT_UNKNOWN;
3250 if (h == NULL && local_got_offsets)
3251 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3252 else if (h != NULL)
3253 tls_type = elf_s390_hash_entry(h)->tls_type;
3254
3255 if (tls_type == GOT_TLS_GD)
3256 continue;
3257
3258 if (r_type == R_390_TLS_LOAD)
3259 {
3260 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3261 {
3262 /* IE->LE transition. Four valid cases:
3263 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
3264 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
3265 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
3266 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3267 unsigned int insn, ry;
3268
3269 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3270 ry = 0;
3271 if ((insn & 0xff00f000) == 0x58000000)
3272 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
3273 ry = (insn & 0x000f0000);
3274 else if ((insn & 0xff0f0000) == 0x58000000)
3275 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
3276 ry = (insn & 0x0000f000) << 4;
3277 else if ((insn & 0xff00f000) == 0x5800c000)
3278 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
3279 ry = (insn & 0x000f0000);
3280 else if ((insn & 0xff0f0000) == 0x580c0000)
3281 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3282 ry = (insn & 0x0000f000) << 4;
3283 else
3284 invalid_tls_insn (input_bfd, input_section, rel);
3285 insn = 0x18000700 | (insn & 0x00f00000) | ry;
3286 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3287 }
3288 }
3289 else if (r_type == R_390_TLS_GDCALL)
3290 {
3291 unsigned int insn;
3292
3293 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3294 if ((insn & 0xff000fff) != 0x4d000000 &&
3295 (insn & 0xffff0000) != 0xc0e50000 &&
3296 (insn & 0xff000000) != 0x0d000000)
3297 invalid_tls_insn (input_bfd, input_section, rel);
3298 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3299 {
3300 if ((insn & 0xff000000) == 0x0d000000)
3301 {
3302 /* GD->LE transition.
3303 basr rx, ry -> nopr r7 */
3304 insn = 0x07070000 | (insn & 0xffff);
3305 }
3306 else if ((insn & 0xff000000) == 0x4d000000)
3307 {
3308 /* GD->LE transition.
3309 bas %r14,0(%rx,%r13) -> bc 0,0 */
3310 insn = 0x47000000;
3311 }
3312 else
3313 {
3314 /* GD->LE transition.
3315 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
3316 insn = 0xc0040000;
3317 bfd_put_16 (output_bfd, 0x0000,
3318 contents + rel->r_offset + 4);
3319 }
3320 }
3321 else
3322 {
3323 /* If basr is used in the pic case to invoke
3324 _tls_get_offset, something went wrong before. */
3325 if ((insn & 0xff000000) == 0x0d000000)
3326 invalid_tls_insn (input_bfd, input_section, rel);
3327
3328 if ((insn & 0xff000000) == 0x4d000000)
3329 {
3330 /* GD->IE transition.
3331 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3332 insn = 0x5822c000;
3333 }
3334 else
3335 {
3336 /* GD->IE transition.
3337 brasl %r14,__tls_get_addr@plt ->
3338 l %r2,0(%r2,%r12) ; bcr 0,0 */
3339 insn = 0x5822c000;
3340 bfd_put_16 (output_bfd, 0x0700,
3341 contents + rel->r_offset + 4);
3342 }
3343 }
3344 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3345 }
3346 else if (r_type == R_390_TLS_LDCALL)
3347 {
3348 if (!bfd_link_pic (info))
3349 {
3350 unsigned int insn;
3351
3352 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3353 if ((insn & 0xff000fff) != 0x4d000000 &&
3354 (insn & 0xffff0000) != 0xc0e50000 &&
3355 (insn & 0xff000000) != 0x0d000000)
3356 invalid_tls_insn (input_bfd, input_section, rel);
3357
3358 if ((insn & 0xff000000) == 0x0d000000)
3359 {
3360 /* LD->LE transition.
3361 basr rx, ry -> nopr r7 */
3362 insn = 0x07070000 | (insn & 0xffff);
3363 }
3364 else if ((insn & 0xff000000) == 0x4d000000)
3365 {
3366 /* LD->LE transition.
3367 bas %r14,0(%rx,%r13) -> bc 0,0 */
3368 insn = 0x47000000;
3369 }
3370 else
3371 {
3372 /* LD->LE transition.
3373 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
3374 insn = 0xc0040000;
3375 bfd_put_16 (output_bfd, 0x0000,
3376 contents + rel->r_offset + 4);
3377 }
3378 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3379 }
3380 }
3381 continue;
3382
3383 default:
3384 break;
3385 }
3386
3387 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3388 because such sections are not SEC_ALLOC and thus ld.so will
3389 not process them. */
3390 if (unresolved_reloc
3391 && !((input_section->flags & SEC_DEBUGGING) != 0
3392 && h->def_dynamic)
3393 && _bfd_elf_section_offset (output_bfd, info, input_section,
3394 rel->r_offset) != (bfd_vma) -1)
3395 (*_bfd_error_handler)
3396 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3397 input_bfd,
3398 input_section,
3399 (long) rel->r_offset,
3400 howto->name,
3401 h->root.root.string);
3402
3403 do_relocation:
3404
3405 /* When applying a 24 bit reloc we need to start one byte
3406 earlier. Otherwise the 32 bit get/put bfd operations might
3407 access a byte after the actual section. */
3408 if (r_type == R_390_PC24DBL
3409 || r_type == R_390_PLT24DBL)
3410 rel->r_offset--;
3411
3412 if (r_type == R_390_20
3413 || r_type == R_390_GOT20
3414 || r_type == R_390_GOTPLT20
3415 || r_type == R_390_TLS_GOTIE20)
3416 {
3417 relocation += rel->r_addend;
3418 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3419 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3420 contents, rel->r_offset,
3421 relocation, 0);
3422 }
3423 else
3424 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3425 contents, rel->r_offset,
3426 relocation, rel->r_addend);
3427
3428 if (r != bfd_reloc_ok)
3429 {
3430 const char *name;
3431
3432 if (h != NULL)
3433 name = h->root.root.string;
3434 else
3435 {
3436 name = bfd_elf_string_from_elf_section (input_bfd,
3437 symtab_hdr->sh_link,
3438 sym->st_name);
3439 if (name == NULL)
3440 return FALSE;
3441 if (*name == '\0')
3442 name = bfd_section_name (input_bfd, sec);
3443 }
3444
3445 if (r == bfd_reloc_overflow)
3446 (*info->callbacks->reloc_overflow)
3447 (info, (h ? &h->root : NULL), name, howto->name,
3448 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3449 else
3450 {
3451 (*_bfd_error_handler)
3452 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3453 input_bfd, input_section,
3454 (long) rel->r_offset, name, (int) r);
3455 return FALSE;
3456 }
3457 }
3458 }
3459
3460 return TRUE;
3461 }
3462
3463 /* Generate the PLT slots together with the dynamic relocations needed
3464 for IFUNC symbols. */
3465
3466 static void
3467 elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3468 struct bfd_link_info *info,
3469 struct elf_link_hash_entry *h,
3470 struct elf_s390_link_hash_table *htab,
3471 bfd_vma iplt_offset,
3472 bfd_vma resolver_address)
3473 {
3474 bfd_vma iplt_index;
3475 bfd_vma got_offset;
3476 bfd_vma igotiplt_offset;
3477 Elf_Internal_Rela rela;
3478 bfd_byte *loc;
3479 asection *plt, *gotplt, *relplt;
3480 bfd_vma relative_offset;
3481
3482 if (htab->elf.iplt == NULL
3483 || htab->elf.igotplt == NULL
3484 || htab->elf.irelplt == NULL)
3485 abort ();
3486
3487 gotplt = htab->elf.igotplt;
3488 relplt = htab->elf.irelplt;
3489
3490 /* Index of the PLT slot within iplt section. */
3491 iplt_index = iplt_offset / PLT_ENTRY_SIZE;
3492 plt = htab->elf.iplt;
3493 /* Offset into the igot.plt section. */
3494 igotiplt_offset = iplt_index * GOT_ENTRY_SIZE;
3495 /* Offset into the got section. */
3496 got_offset = igotiplt_offset + gotplt->output_offset;
3497
3498 /* S390 uses halfwords for relative branch calc! */
3499 relative_offset = - (plt->output_offset +
3500 (PLT_ENTRY_SIZE * iplt_index) + 18) / 2;
3501 /* If offset is > 32768, branch to a previous branch
3502 390 can only handle +-64 K jumps. */
3503 if ( -32768 > (int) relative_offset )
3504 relative_offset
3505 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3506
3507 /* Fill in the entry in the procedure linkage table. */
3508 if (!bfd_link_pic (info))
3509 {
3510 memcpy (plt->contents + iplt_offset, elf_s390_plt_entry,
3511 PLT_ENTRY_SIZE);
3512
3513 /* Adjust jump to the first plt entry. */
3514 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3515 plt->contents + iplt_offset + 20);
3516
3517 /* Push the GOT offset field. */
3518 bfd_put_32 (output_bfd,
3519 (gotplt->output_section->vma
3520 + got_offset),
3521 plt->contents + iplt_offset + 24);
3522 }
3523 else if (got_offset < 4096)
3524 {
3525 /* The GOT offset is small enough to be used directly as
3526 displacement. */
3527 memcpy (plt->contents + iplt_offset,
3528 elf_s390_plt_pic12_entry,
3529 PLT_ENTRY_SIZE);
3530
3531 /* Put in the GOT offset as displacement value. The 0xc000
3532 value comes from the first word of the plt entry. Look
3533 at the elf_s390_plt_pic16_entry content. */
3534 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3535 plt->contents + iplt_offset + 2);
3536
3537 /* Adjust the jump to the first plt entry. */
3538 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3539 plt->contents + iplt_offset + 20);
3540 }
3541 else if (got_offset < 32768)
3542 {
3543 /* The GOT offset is too big for a displacement but small
3544 enough to be a signed 16 bit immediate value as it can be
3545 used in an lhi instruction. */
3546 memcpy (plt->contents + iplt_offset,
3547 elf_s390_plt_pic16_entry,
3548 PLT_ENTRY_SIZE);
3549
3550 /* Put in the GOT offset for the lhi instruction. */
3551 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3552 plt->contents + iplt_offset + 2);
3553
3554 /* Adjust the jump to the first plt entry. */
3555 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3556 plt->contents + iplt_offset + 20);
3557 }
3558 else
3559 {
3560 memcpy (plt->contents + iplt_offset,
3561 elf_s390_plt_pic_entry,
3562 PLT_ENTRY_SIZE);
3563
3564 /* Adjust the jump to the first plt entry. */
3565 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3566 plt->contents + iplt_offset + 20);
3567
3568 /* Push the GOT offset field. */
3569 bfd_put_32 (output_bfd, got_offset,
3570 plt->contents + iplt_offset + 24);
3571 }
3572 /* Insert offset into reloc. table here. */
3573 bfd_put_32 (output_bfd, relplt->output_offset +
3574 iplt_index * RELA_ENTRY_SIZE,
3575 plt->contents + iplt_offset + 28);
3576
3577 /* Fill in the entry in the global offset table.
3578 Points to instruction after GOT offset. */
3579 bfd_put_32 (output_bfd,
3580 (plt->output_section->vma
3581 + plt->output_offset
3582 + iplt_offset
3583 + 12),
3584 gotplt->contents + igotiplt_offset);
3585
3586 /* Fill in the entry in the .rela.plt section. */
3587 rela.r_offset = gotplt->output_section->vma + got_offset;
3588
3589 if (!h
3590 || h->dynindx == -1
3591 || ((bfd_link_executable (info)
3592 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3593 && h->def_regular))
3594 {
3595 /* The symbol can be locally resolved. */
3596 rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
3597 rela.r_addend = resolver_address;
3598 }
3599 else
3600 {
3601 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3602 rela.r_addend = 0;
3603 }
3604
3605 loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE;
3606 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3607 }
3608
3609 /* Finish up dynamic symbol handling. We set the contents of various
3610 dynamic sections here. */
3611
3612 static bfd_boolean
3613 elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3614 struct bfd_link_info *info,
3615 struct elf_link_hash_entry *h,
3616 Elf_Internal_Sym *sym)
3617 {
3618 struct elf_s390_link_hash_table *htab;
3619 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
3620
3621 htab = elf_s390_hash_table (info);
3622
3623 if (h->plt.offset != (bfd_vma) -1)
3624 {
3625 bfd_vma plt_index;
3626 bfd_vma got_offset;
3627 Elf_Internal_Rela rela;
3628 bfd_byte *loc;
3629 bfd_vma relative_offset;
3630
3631 /* This symbol has an entry in the procedure linkage table. Set
3632 it up. */
3633 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
3634 {
3635 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3636 htab, h->plt.offset,
3637 eh->ifunc_resolver_address +
3638 eh->ifunc_resolver_section->output_offset +
3639 eh->ifunc_resolver_section->output_section->vma);
3640 /* Do not return yet. Handling of explicit GOT slots of
3641 IFUNC symbols is below. */
3642 }
3643 else
3644 {
3645 if (h->dynindx == -1
3646 || htab->elf.splt == NULL
3647 || htab->elf.sgotplt == NULL
3648 || htab->elf.srelplt == NULL)
3649 abort ();
3650
3651 /* Calc. index no.
3652 Current offset - size first entry / entry size. */
3653 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3654
3655 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3656 addr & GOT addr. */
3657 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3658
3659 /* S390 uses halfwords for relative branch calc! */
3660 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3661 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3662 /* If offset is > 32768, branch to a previous branch
3663 390 can only handle +-64 K jumps. */
3664 if ( -32768 > (int) relative_offset )
3665 relative_offset
3666 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3667
3668 /* Fill in the entry in the procedure linkage table. */
3669 if (!bfd_link_pic (info))
3670 {
3671 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry,
3672 PLT_ENTRY_SIZE);
3673
3674 /* Adjust jump to the first plt entry. */
3675 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3676 htab->elf.splt->contents + h->plt.offset + 20);
3677
3678 /* Push the GOT offset field. */
3679 bfd_put_32 (output_bfd,
3680 (htab->elf.sgotplt->output_section->vma
3681 + htab->elf.sgotplt->output_offset
3682 + got_offset),
3683 htab->elf.splt->contents + h->plt.offset + 24);
3684 }
3685 else if (got_offset < 4096)
3686 {
3687 /* The GOT offset is small enough to be used directly as
3688 displacement. */
3689 memcpy (htab->elf.splt->contents + h->plt.offset,
3690 elf_s390_plt_pic12_entry,
3691 PLT_ENTRY_SIZE);
3692
3693 /* Put in the GOT offset as displacement value. The 0xc000
3694 value comes from the first word of the plt entry. Look
3695 at the elf_s390_plt_pic12_entry content. */
3696 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3697 htab->elf.splt->contents + h->plt.offset + 2);
3698
3699 /* Adjust the jump to the first plt entry. */
3700 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3701 htab->elf.splt->contents + h->plt.offset + 20);
3702 }
3703 else if (got_offset < 32768)
3704 {
3705 /* The GOT offset is too big for a displacement but small
3706 enough to be a signed 16 bit immediate value as it can be
3707 used in an lhi instruction. */
3708 memcpy (htab->elf.splt->contents + h->plt.offset,
3709 elf_s390_plt_pic16_entry,
3710 PLT_ENTRY_SIZE);
3711
3712 /* Put in the GOT offset for the lhi instruction. */
3713 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3714 htab->elf.splt->contents + h->plt.offset + 2);
3715
3716 /* Adjust the jump to the first plt entry. */
3717 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3718 htab->elf.splt->contents + h->plt.offset + 20);
3719 }
3720 else
3721 {
3722 memcpy (htab->elf.splt->contents + h->plt.offset,
3723 elf_s390_plt_pic_entry,
3724 PLT_ENTRY_SIZE);
3725
3726 /* Adjust the jump to the first plt entry. */
3727 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3728 htab->elf.splt->contents + h->plt.offset + 20);
3729
3730 /* Push the GOT offset field. */
3731 bfd_put_32 (output_bfd, got_offset,
3732 htab->elf.splt->contents + h->plt.offset + 24);
3733 }
3734 /* Insert offset into reloc. table here. */
3735 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3736 htab->elf.splt->contents + h->plt.offset + 28);
3737
3738 /* Fill in the entry in the global offset table.
3739 Points to instruction after GOT offset. */
3740 bfd_put_32 (output_bfd,
3741 (htab->elf.splt->output_section->vma
3742 + htab->elf.splt->output_offset
3743 + h->plt.offset
3744 + 12),
3745 htab->elf.sgotplt->contents + got_offset);
3746
3747 /* Fill in the entry in the .rela.plt section. */
3748 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3749 + htab->elf.sgotplt->output_offset
3750 + got_offset);
3751 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3752 rela.r_addend = 0;
3753 loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3754 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3755
3756 if (!h->def_regular)
3757 {
3758 /* Mark the symbol as undefined, rather than as defined in
3759 the .plt section. Leave the value alone. This is a clue
3760 for the dynamic linker, to make function pointer
3761 comparisons work between an application and shared
3762 library. */
3763 sym->st_shndx = SHN_UNDEF;
3764 }
3765 }
3766 }
3767
3768 if (h->got.offset != (bfd_vma) -1
3769 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3770 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3771 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3772 {
3773 Elf_Internal_Rela rela;
3774 bfd_byte *loc;
3775
3776 /* This symbol has an entry in the global offset table. Set it
3777 up. */
3778
3779 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
3780 abort ();
3781
3782 rela.r_offset = (htab->elf.sgot->output_section->vma
3783 + htab->elf.sgot->output_offset
3784 + (h->got.offset &~ (bfd_vma) 1));
3785
3786 /* If this is a static link, or it is a -Bsymbolic link and the
3787 symbol is defined locally or was forced to be local because
3788 of a version file, we just want to emit a RELATIVE reloc.
3789 The entry in the global offset table will already have been
3790 initialized in the relocate_section function. */
3791 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3792 {
3793 if (bfd_link_pic (info))
3794 {
3795 /* An explicit GOT slot usage needs GLOB_DAT. If the
3796 symbol references local the implicit got.iplt slot
3797 will be used and the IRELATIVE reloc has been created
3798 above. */
3799 goto do_glob_dat;
3800 }
3801 else
3802 {
3803 /* For non-shared objects explicit GOT slots must be
3804 filled with the PLT slot address for pointer
3805 equality reasons. */
3806 bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma
3807 + htab->elf.iplt->output_offset
3808 + h->plt.offset),
3809 htab->elf.sgot->contents + h->got.offset);
3810 return TRUE;
3811 }
3812 }
3813 else if (bfd_link_pic (info)
3814 && SYMBOL_REFERENCES_LOCAL (info, h))
3815 {
3816 /* If this is a static link, or it is a -Bsymbolic link and
3817 the symbol is defined locally or was forced to be local
3818 because of a version file, we just want to emit a
3819 RELATIVE reloc. The entry in the global offset table
3820 will already have been initialized in the
3821 relocate_section function. */
3822 if (!h->def_regular)
3823 return FALSE;
3824 BFD_ASSERT((h->got.offset & 1) != 0);
3825 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3826 rela.r_addend = (h->root.u.def.value
3827 + h->root.u.def.section->output_section->vma
3828 + h->root.u.def.section->output_offset);
3829 }
3830 else
3831 {
3832 BFD_ASSERT((h->got.offset & 1) == 0);
3833 do_glob_dat:
3834 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
3835 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
3836 rela.r_addend = 0;
3837 }
3838
3839 loc = htab->elf.srelgot->contents;
3840 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3841 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3842 }
3843
3844 if (h->needs_copy)
3845 {
3846 Elf_Internal_Rela rela;
3847 bfd_byte *loc;
3848
3849 /* This symbols needs a copy reloc. Set it up. */
3850
3851 if (h->dynindx == -1
3852 || (h->root.type != bfd_link_hash_defined
3853 && h->root.type != bfd_link_hash_defweak)
3854 || htab->srelbss == NULL)
3855 abort ();
3856
3857 rela.r_offset = (h->root.u.def.value
3858 + h->root.u.def.section->output_section->vma
3859 + h->root.u.def.section->output_offset);
3860 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3861 rela.r_addend = 0;
3862 loc = htab->srelbss->contents;
3863 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela);
3864 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3865 }
3866
3867 /* Mark some specially defined symbols as absolute. */
3868 if (h == htab->elf.hdynamic
3869 || h == htab->elf.hgot
3870 || h == htab->elf.hplt)
3871 sym->st_shndx = SHN_ABS;
3872
3873 return TRUE;
3874 }
3875
3876 /* Used to decide how to sort relocs in an optimal manner for the
3877 dynamic linker, before writing them out. */
3878
3879 static enum elf_reloc_type_class
3880 elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3881 const asection *rel_sec ATTRIBUTE_UNUSED,
3882 const Elf_Internal_Rela *rela)
3883 {
3884 bfd *abfd = info->output_bfd;
3885 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3886 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3887 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
3888 Elf_Internal_Sym sym;
3889
3890 if (htab->elf.dynsym == NULL
3891 || !bed->s->swap_symbol_in (abfd,
3892 (htab->elf.dynsym->contents
3893 + r_symndx * bed->s->sizeof_sym),
3894 0, &sym))
3895 abort ();
3896
3897 /* Check relocation against STT_GNU_IFUNC symbol. */
3898 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3899 return reloc_class_ifunc;
3900
3901 switch ((int) ELF32_R_TYPE (rela->r_info))
3902 {
3903 case R_390_RELATIVE:
3904 return reloc_class_relative;
3905 case R_390_JMP_SLOT:
3906 return reloc_class_plt;
3907 case R_390_COPY:
3908 return reloc_class_copy;
3909 default:
3910 return reloc_class_normal;
3911 }
3912 }
3913
3914 /* Finish up the dynamic sections. */
3915
3916 static bfd_boolean
3917 elf_s390_finish_dynamic_sections (bfd *output_bfd,
3918 struct bfd_link_info *info)
3919 {
3920 struct elf_s390_link_hash_table *htab;
3921 bfd *dynobj;
3922 asection *sdyn;
3923 bfd *ibfd;
3924 unsigned int i;
3925
3926 htab = elf_s390_hash_table (info);
3927 dynobj = htab->elf.dynobj;
3928 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3929
3930 if (htab->elf.dynamic_sections_created)
3931 {
3932 Elf32_External_Dyn *dyncon, *dynconend;
3933
3934 if (sdyn == NULL || htab->elf.sgot == NULL)
3935 abort ();
3936
3937 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3938 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3939 for (; dyncon < dynconend; dyncon++)
3940 {
3941 Elf_Internal_Dyn dyn;
3942 asection *s;
3943
3944 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3945
3946 switch (dyn.d_tag)
3947 {
3948 default:
3949 continue;
3950
3951 case DT_PLTGOT:
3952 s = htab->elf.sgotplt;
3953 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3954 break;
3955
3956 case DT_JMPREL:
3957 s = htab->elf.srelplt;
3958 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3959 break;
3960
3961 case DT_PLTRELSZ:
3962 dyn.d_un.d_val = htab->elf.srelplt->size + htab->elf.irelplt->size;
3963 break;
3964 }
3965
3966 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3967 }
3968
3969 /* Fill in the special first entry in the procedure linkage table. */
3970 if (htab->elf.splt && htab->elf.splt->size > 0)
3971 {
3972 memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
3973 if (bfd_link_pic (info))
3974 {
3975 memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry,
3976 PLT_FIRST_ENTRY_SIZE);
3977 }
3978 else
3979 {
3980 memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry,
3981 PLT_FIRST_ENTRY_SIZE);
3982 bfd_put_32 (output_bfd,
3983 htab->elf.sgotplt->output_section->vma
3984 + htab->elf.sgotplt->output_offset,
3985 htab->elf.splt->contents + 24);
3986 }
3987 elf_section_data (htab->elf.splt->output_section)
3988 ->this_hdr.sh_entsize = 4;
3989 }
3990
3991 }
3992
3993 if (htab->elf.sgotplt)
3994 {
3995 /* Fill in the first three entries in the global offset table. */
3996 if (htab->elf.sgotplt->size > 0)
3997 {
3998 bfd_put_32 (output_bfd,
3999 (sdyn == NULL ? (bfd_vma) 0
4000 : sdyn->output_section->vma + sdyn->output_offset),
4001 htab->elf.sgotplt->contents);
4002 /* One entry for shared object struct ptr. */
4003 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4);
4004 /* One entry for _dl_runtime_resolve. */
4005 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
4006 }
4007
4008 elf_section_data (htab->elf.sgotplt->output_section)
4009 ->this_hdr.sh_entsize = 4;
4010 }
4011 /* Finish dynamic symbol for local IFUNC symbols. */
4012 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
4013 {
4014 struct plt_entry *local_plt;
4015 Elf_Internal_Sym *isym;
4016 Elf_Internal_Shdr *symtab_hdr;
4017
4018 symtab_hdr = &elf_symtab_hdr (ibfd);
4019
4020 local_plt = elf_s390_local_plt (ibfd);
4021 if (local_plt != NULL)
4022 for (i = 0; i < symtab_hdr->sh_info; i++)
4023 {
4024 if (local_plt[i].plt.offset != (bfd_vma) -1)
4025 {
4026 asection *sec = local_plt[i].sec;
4027 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
4028 if (isym == NULL)
4029 return FALSE;
4030
4031 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4032 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
4033 local_plt[i].plt.offset,
4034 isym->st_value
4035 + sec->output_section->vma
4036 + sec->output_offset);
4037
4038 }
4039 }
4040 }
4041 return TRUE;
4042 }
4043 \f
4044 /* Support for core dump NOTE sections. */
4045
4046 static bfd_boolean
4047 elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note)
4048 {
4049 int offset;
4050 unsigned int size;
4051
4052 switch (note->descsz)
4053 {
4054 default:
4055 return FALSE;
4056
4057 case 224: /* S/390 Linux. */
4058 /* pr_cursig */
4059 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
4060
4061 /* pr_pid */
4062 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
4063
4064 /* pr_reg */
4065 offset = 72;
4066 size = 144;
4067 break;
4068 }
4069
4070 /* Make a ".reg/999" section. */
4071 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
4072 size, note->descpos + offset);
4073 }
4074
4075 static bfd_boolean
4076 elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
4077 {
4078 switch (note->descsz)
4079 {
4080 default:
4081 return FALSE;
4082
4083 case 124: /* sizeof(struct elf_prpsinfo) on s390 */
4084 elf_tdata (abfd)->core->pid
4085 = bfd_get_32 (abfd, note->descdata + 12);
4086 elf_tdata (abfd)->core->program
4087 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
4088 elf_tdata (abfd)->core->command
4089 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
4090 break;
4091 }
4092
4093 /* Note that for some reason, a spurious space is tacked
4094 onto the end of the args in some (at least one anyway)
4095 implementations, so strip it off if it exists. */
4096
4097 {
4098 char *command = elf_tdata (abfd)->core->command;
4099 int n = strlen (command);
4100
4101 if (0 < n && command[n - 1] == ' ')
4102 command[n - 1] = '\0';
4103 }
4104
4105 return TRUE;
4106 }
4107
4108 static char *
4109 elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
4110 int note_type, ...)
4111 {
4112 va_list ap;
4113
4114 switch (note_type)
4115 {
4116 default:
4117 return NULL;
4118
4119 case NT_PRPSINFO:
4120 {
4121 char data[124] = { 0 };
4122 const char *fname, *psargs;
4123
4124 va_start (ap, note_type);
4125 fname = va_arg (ap, const char *);
4126 psargs = va_arg (ap, const char *);
4127 va_end (ap);
4128
4129 strncpy (data + 28, fname, 16);
4130 strncpy (data + 44, psargs, 80);
4131 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
4132 &data, sizeof (data));
4133 }
4134
4135 case NT_PRSTATUS:
4136 {
4137 char data[224] = { 0 };
4138 long pid;
4139 int cursig;
4140 const void *gregs;
4141
4142 va_start (ap, note_type);
4143 pid = va_arg (ap, long);
4144 cursig = va_arg (ap, int);
4145 gregs = va_arg (ap, const void *);
4146 va_end (ap);
4147
4148 bfd_put_16 (abfd, cursig, data + 12);
4149 bfd_put_32 (abfd, pid, data + 24);
4150 memcpy (data + 72, gregs, 144);
4151 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
4152 &data, sizeof (data));
4153 }
4154 }
4155 /* NOTREACHED */
4156 }
4157 \f
4158 /* Return address for Ith PLT stub in section PLT, for relocation REL
4159 or (bfd_vma) -1 if it should not be included. */
4160
4161 static bfd_vma
4162 elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
4163 const arelent *rel ATTRIBUTE_UNUSED)
4164 {
4165 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
4166 }
4167
4168 /* Merge backend specific data from an object file to the output
4169 object file when linking. */
4170
4171 static bfd_boolean
4172 elf32_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4173 {
4174 if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
4175 return TRUE;
4176
4177 if (!elf_s390_merge_obj_attributes (ibfd, obfd))
4178 return FALSE;
4179
4180 elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
4181 return TRUE;
4182 }
4183
4184
4185 #define TARGET_BIG_SYM s390_elf32_vec
4186 #define TARGET_BIG_NAME "elf32-s390"
4187 #define ELF_ARCH bfd_arch_s390
4188 #define ELF_TARGET_ID S390_ELF_DATA
4189 #define ELF_MACHINE_CODE EM_S390
4190 #define ELF_MACHINE_ALT1 EM_S390_OLD
4191 #define ELF_MAXPAGESIZE 0x1000
4192
4193 #define elf_backend_can_gc_sections 1
4194 #define elf_backend_can_refcount 1
4195 #define elf_backend_want_got_plt 1
4196 #define elf_backend_plt_readonly 1
4197 #define elf_backend_want_plt_sym 0
4198 #define elf_backend_got_header_size 12
4199 #define elf_backend_rela_normal 1
4200
4201 #define elf_info_to_howto elf_s390_info_to_howto
4202
4203 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
4204 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
4205 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
4206 #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
4207
4208 #define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
4209
4210 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
4211 #define elf_backend_check_relocs elf_s390_check_relocs
4212 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
4213 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
4214 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4215 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
4216 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
4217 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
4218 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
4219 #define elf_backend_relocate_section elf_s390_relocate_section
4220 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
4221 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4222 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
4223 #define elf_backend_grok_psinfo elf_s390_grok_psinfo
4224 #define elf_backend_write_core_note elf_s390_write_core_note
4225 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
4226 #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
4227 #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
4228
4229 #define bfd_elf32_mkobject elf_s390_mkobject
4230 #define elf_backend_object_p elf_s390_object_p
4231
4232 #include "elf32-target.h"
GDB Binutils - Deliverables
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