1 /* IBM S/390-specific support for 64-bit ELF
2 Copyright (C) 2000-2016 Free Software Foundation, Inc.
3 Contributed Martin Schwidefsky (schwidefsky@de.ibm.com).
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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
30 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
31 from smaller values. Start with zero, widen, *then* decrement. */
32 #define MINUS_ONE (((bfd_vma)0) - 1)
34 static bfd_reloc_status_type
35 s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
36 asection *, bfd *, char **);
37 static bfd_reloc_status_type
38 s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
39 asection *, bfd *, char **);
41 /* The relocation "howto" table. */
42 static reloc_howto_type elf_howto_table[] =
44 HOWTO (R_390_NONE, /* type */
46 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
48 FALSE, /* pc_relative */
50 complain_overflow_dont, /* complain_on_overflow */
51 bfd_elf_generic_reloc, /* special_function */
52 "R_390_NONE", /* name */
53 FALSE, /* partial_inplace */
56 FALSE), /* pcrel_offset */
58 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
59 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
60 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
61 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
62 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
63 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
64 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
65 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
66 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
67 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
68 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
69 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
70 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
71 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
72 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
73 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
74 HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
75 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE),
76 HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
77 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE),
78 HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
79 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE),
80 HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
81 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE),
82 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
83 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE),
84 HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
85 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE),
86 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
87 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
88 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
89 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
90 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
91 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
92 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
93 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
94 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
95 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
96 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
97 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
98 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
99 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
100 HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
101 bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE),
102 HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
103 bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
104 HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
105 bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
106 HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
107 bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
108 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
109 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE),
110 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
111 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
112 HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
113 bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE),
114 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
115 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
116 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
117 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
118 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
119 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
120 HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
121 bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE),
122 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
123 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE),
124 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
125 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
126 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
128 HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
129 bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE),
130 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
131 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
132 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
133 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
134 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
135 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
136 EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */
137 HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
139 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
140 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
141 EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */
142 HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
143 bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
144 EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */
145 HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
147 EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */
148 HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
150 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
152 EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */
153 HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
154 bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
155 EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */
156 HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
157 bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
158 HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
159 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
160 HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
161 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
162 HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
164 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
165 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
166 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
167 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
168 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
169 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
170 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
171 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
172 HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
173 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE),
174 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
175 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
176 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
177 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
178 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
179 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
180 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
181 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
184 /* GNU extension to record C++ vtable hierarchy. */
185 static reloc_howto_type elf64_s390_vtinherit_howto =
186 HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
187 static reloc_howto_type elf64_s390_vtentry_howto =
188 HOWTO (R_390_GNU_VTENTRY, 0,4,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
190 static reloc_howto_type *
191 elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
192 bfd_reloc_code_real_type code)
197 return &elf_howto_table[(int) R_390_NONE];
199 return &elf_howto_table[(int) R_390_8];
200 case BFD_RELOC_390_12:
201 return &elf_howto_table[(int) R_390_12];
203 return &elf_howto_table[(int) R_390_16];
205 return &elf_howto_table[(int) R_390_32];
207 return &elf_howto_table[(int) R_390_32];
208 case BFD_RELOC_32_PCREL:
209 return &elf_howto_table[(int) R_390_PC32];
210 case BFD_RELOC_390_GOT12:
211 return &elf_howto_table[(int) R_390_GOT12];
212 case BFD_RELOC_32_GOT_PCREL:
213 return &elf_howto_table[(int) R_390_GOT32];
214 case BFD_RELOC_390_PLT32:
215 return &elf_howto_table[(int) R_390_PLT32];
216 case BFD_RELOC_390_COPY:
217 return &elf_howto_table[(int) R_390_COPY];
218 case BFD_RELOC_390_GLOB_DAT:
219 return &elf_howto_table[(int) R_390_GLOB_DAT];
220 case BFD_RELOC_390_JMP_SLOT:
221 return &elf_howto_table[(int) R_390_JMP_SLOT];
222 case BFD_RELOC_390_RELATIVE:
223 return &elf_howto_table[(int) R_390_RELATIVE];
224 case BFD_RELOC_32_GOTOFF:
225 return &elf_howto_table[(int) R_390_GOTOFF32];
226 case BFD_RELOC_390_GOTPC:
227 return &elf_howto_table[(int) R_390_GOTPC];
228 case BFD_RELOC_390_GOT16:
229 return &elf_howto_table[(int) R_390_GOT16];
230 case BFD_RELOC_16_PCREL:
231 return &elf_howto_table[(int) R_390_PC16];
232 case BFD_RELOC_390_PC12DBL:
233 return &elf_howto_table[(int) R_390_PC12DBL];
234 case BFD_RELOC_390_PLT12DBL:
235 return &elf_howto_table[(int) R_390_PLT12DBL];
236 case BFD_RELOC_390_PC16DBL:
237 return &elf_howto_table[(int) R_390_PC16DBL];
238 case BFD_RELOC_390_PLT16DBL:
239 return &elf_howto_table[(int) R_390_PLT16DBL];
240 case BFD_RELOC_390_PC24DBL:
241 return &elf_howto_table[(int) R_390_PC24DBL];
242 case BFD_RELOC_390_PLT24DBL:
243 return &elf_howto_table[(int) R_390_PLT24DBL];
244 case BFD_RELOC_390_PC32DBL:
245 return &elf_howto_table[(int) R_390_PC32DBL];
246 case BFD_RELOC_390_PLT32DBL:
247 return &elf_howto_table[(int) R_390_PLT32DBL];
248 case BFD_RELOC_390_GOTPCDBL:
249 return &elf_howto_table[(int) R_390_GOTPCDBL];
251 return &elf_howto_table[(int) R_390_64];
252 case BFD_RELOC_64_PCREL:
253 return &elf_howto_table[(int) R_390_PC64];
254 case BFD_RELOC_390_GOT64:
255 return &elf_howto_table[(int) R_390_GOT64];
256 case BFD_RELOC_390_PLT64:
257 return &elf_howto_table[(int) R_390_PLT64];
258 case BFD_RELOC_390_GOTENT:
259 return &elf_howto_table[(int) R_390_GOTENT];
260 case BFD_RELOC_16_GOTOFF:
261 return &elf_howto_table[(int) R_390_GOTOFF16];
262 case BFD_RELOC_390_GOTOFF64:
263 return &elf_howto_table[(int) R_390_GOTOFF64];
264 case BFD_RELOC_390_GOTPLT12:
265 return &elf_howto_table[(int) R_390_GOTPLT12];
266 case BFD_RELOC_390_GOTPLT16:
267 return &elf_howto_table[(int) R_390_GOTPLT16];
268 case BFD_RELOC_390_GOTPLT32:
269 return &elf_howto_table[(int) R_390_GOTPLT32];
270 case BFD_RELOC_390_GOTPLT64:
271 return &elf_howto_table[(int) R_390_GOTPLT64];
272 case BFD_RELOC_390_GOTPLTENT:
273 return &elf_howto_table[(int) R_390_GOTPLTENT];
274 case BFD_RELOC_390_PLTOFF16:
275 return &elf_howto_table[(int) R_390_PLTOFF16];
276 case BFD_RELOC_390_PLTOFF32:
277 return &elf_howto_table[(int) R_390_PLTOFF32];
278 case BFD_RELOC_390_PLTOFF64:
279 return &elf_howto_table[(int) R_390_PLTOFF64];
280 case BFD_RELOC_390_TLS_LOAD:
281 return &elf_howto_table[(int) R_390_TLS_LOAD];
282 case BFD_RELOC_390_TLS_GDCALL:
283 return &elf_howto_table[(int) R_390_TLS_GDCALL];
284 case BFD_RELOC_390_TLS_LDCALL:
285 return &elf_howto_table[(int) R_390_TLS_LDCALL];
286 case BFD_RELOC_390_TLS_GD64:
287 return &elf_howto_table[(int) R_390_TLS_GD64];
288 case BFD_RELOC_390_TLS_GOTIE12:
289 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
290 case BFD_RELOC_390_TLS_GOTIE64:
291 return &elf_howto_table[(int) R_390_TLS_GOTIE64];
292 case BFD_RELOC_390_TLS_LDM64:
293 return &elf_howto_table[(int) R_390_TLS_LDM64];
294 case BFD_RELOC_390_TLS_IE64:
295 return &elf_howto_table[(int) R_390_TLS_IE64];
296 case BFD_RELOC_390_TLS_IEENT:
297 return &elf_howto_table[(int) R_390_TLS_IEENT];
298 case BFD_RELOC_390_TLS_LE64:
299 return &elf_howto_table[(int) R_390_TLS_LE64];
300 case BFD_RELOC_390_TLS_LDO64:
301 return &elf_howto_table[(int) R_390_TLS_LDO64];
302 case BFD_RELOC_390_TLS_DTPMOD:
303 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
304 case BFD_RELOC_390_TLS_DTPOFF:
305 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
306 case BFD_RELOC_390_TLS_TPOFF:
307 return &elf_howto_table[(int) R_390_TLS_TPOFF];
308 case BFD_RELOC_390_20:
309 return &elf_howto_table[(int) R_390_20];
310 case BFD_RELOC_390_GOT20:
311 return &elf_howto_table[(int) R_390_GOT20];
312 case BFD_RELOC_390_GOTPLT20:
313 return &elf_howto_table[(int) R_390_GOTPLT20];
314 case BFD_RELOC_390_TLS_GOTIE20:
315 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
316 case BFD_RELOC_390_IRELATIVE:
317 return &elf_howto_table[(int) R_390_IRELATIVE];
318 case BFD_RELOC_VTABLE_INHERIT:
319 return &elf64_s390_vtinherit_howto;
320 case BFD_RELOC_VTABLE_ENTRY:
321 return &elf64_s390_vtentry_howto;
328 static reloc_howto_type *
329 elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
335 i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
337 if (elf_howto_table[i].name != NULL
338 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
339 return &elf_howto_table[i];
341 if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
342 return &elf64_s390_vtinherit_howto;
343 if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
344 return &elf64_s390_vtentry_howto;
349 /* We need to use ELF64_R_TYPE so we have our own copy of this function,
350 and elf64-s390.c has its own copy. */
353 elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
355 Elf_Internal_Rela *dst)
357 unsigned int r_type = ELF64_R_TYPE(dst->r_info);
360 case R_390_GNU_VTINHERIT:
361 cache_ptr->howto = &elf64_s390_vtinherit_howto;
364 case R_390_GNU_VTENTRY:
365 cache_ptr->howto = &elf64_s390_vtentry_howto;
369 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
371 /* xgettext:c-format */
372 _bfd_error_handler (_("%B: invalid relocation type %d"),
376 cache_ptr->howto = &elf_howto_table[r_type];
380 /* A relocation function which doesn't do anything. */
381 static bfd_reloc_status_type
382 s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
383 arelent *reloc_entry,
384 asymbol *symbol ATTRIBUTE_UNUSED,
385 void * data ATTRIBUTE_UNUSED,
386 asection *input_section,
388 char **error_message ATTRIBUTE_UNUSED)
391 reloc_entry->address += input_section->output_offset;
395 /* Handle the large displacement relocs. */
396 static bfd_reloc_status_type
397 s390_elf_ldisp_reloc (bfd *abfd,
398 arelent *reloc_entry,
401 asection *input_section,
403 char **error_message ATTRIBUTE_UNUSED)
405 reloc_howto_type *howto = reloc_entry->howto;
409 if (output_bfd != (bfd *) NULL
410 && (symbol->flags & BSF_SECTION_SYM) == 0
411 && (! howto->partial_inplace
412 || reloc_entry->addend == 0))
414 reloc_entry->address += input_section->output_offset;
417 if (output_bfd != NULL)
418 return bfd_reloc_continue;
420 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
421 return bfd_reloc_outofrange;
423 relocation = (symbol->value
424 + symbol->section->output_section->vma
425 + symbol->section->output_offset);
426 relocation += reloc_entry->addend;
427 if (howto->pc_relative)
429 relocation -= (input_section->output_section->vma
430 + input_section->output_offset);
431 relocation -= reloc_entry->address;
434 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
435 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
436 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
438 if ((bfd_signed_vma) relocation < - 0x80000
439 || (bfd_signed_vma) relocation > 0x7ffff)
440 return bfd_reloc_overflow;
446 elf_s390_is_local_label_name (bfd *abfd, const char *name)
448 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
451 return _bfd_elf_is_local_label_name (abfd, name);
454 /* Functions for the 390 ELF linker. */
456 /* The name of the dynamic interpreter. This is put in the .interp
459 #define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
461 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
462 copying dynamic variables from a shared lib into an app's dynbss
463 section, and instead use a dynamic relocation to point into the
465 #define ELIMINATE_COPY_RELOCS 1
467 /* The size in bytes of the first entry in the procedure linkage table. */
468 #define PLT_FIRST_ENTRY_SIZE 32
469 /* The size in bytes of an entry in the procedure linkage table. */
470 #define PLT_ENTRY_SIZE 32
472 #define GOT_ENTRY_SIZE 8
474 #define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela)
476 /* The first three entries in a procedure linkage table are reserved,
477 and the initial contents are unimportant (we zero them out).
478 Subsequent entries look like this. See the SVR4 ABI 386
479 supplement to see how this works. */
481 /* For the s390, simple addr offset can only be 0 - 4096.
482 To use the full 16777216 TB address space, several instructions
483 are needed to load an address in a register and execute
484 a branch( or just saving the address)
486 Furthermore, only r 0 and 1 are free to use!!! */
488 /* The first 3 words in the GOT are then reserved.
489 Word 0 is the address of the dynamic table.
490 Word 1 is a pointer to a structure describing the object
491 Word 2 is used to point to the loader entry address.
493 The code for PLT entries looks like this:
495 The GOT holds the address in the PLT to be executed.
496 The loader then gets:
497 48(15) = Pointer to the structure describing the object.
498 56(15) = Offset in symbol table
499 The loader must then find the module where the function is
500 and insert the address in the GOT.
502 PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
503 LG 1,0(1) # 6 bytes Load address from GOT in r1
504 BCR 15,1 # 2 bytes Jump to address
505 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
506 LGF 1,12(1) # 6 bytes Load offset in symbl table in r1
507 BRCL 15,-x # 6 bytes Jump to start of PLT
508 .long ? # 4 bytes offset into .rela.plt
510 Total = 32 bytes per PLT entry
511 Fixup at offset 2: relative address to GOT entry
512 Fixup at offset 22: relative branch to PLT0
513 Fixup at offset 28: 32 bit offset into .rela.plt
515 A 32 bit offset into the symbol table is enough. It allows for
516 .rela.plt sections up to a size of 2 gigabyte. A single dynamic
517 object (the main program, any shared library) is limited to 4GB in
518 size. Having a .rela.plt of 2GB would already make the .plt
519 section bigger than 8GB. */
521 static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] =
523 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
524 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */
525 0x07, 0xf1, /* br %r1 */
526 0x0d, 0x10, /* basr %r1,%r0 */
527 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */
528 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */
529 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */
532 /* The first PLT entry pushes the offset into the symbol table
533 from R1 onto the stack at 56(15) and the loader object info
534 at 48(15), loads the loader address in R1 and jumps to it. */
536 /* The first entry in the PLT:
539 STG 1,56(15) # r1 contains the offset into the symbol table
540 LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
541 MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
542 LG 1,16(1) # get entry address of loader
543 BCR 15,1 # jump to loader
545 Fixup at offset 8: relative address to start of GOT. */
547 static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] =
549 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */
550 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
551 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */
552 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */
553 0x07, 0xf1, /* br %r1 */
554 0x07, 0x00, /* nopr %r0 */
555 0x07, 0x00, /* nopr %r0 */
556 0x07, 0x00 /* nopr %r0 */
560 /* s390 ELF linker hash entry. */
562 struct elf_s390_link_hash_entry
564 struct elf_link_hash_entry elf;
566 /* Track dynamic relocs copied for this symbol. */
567 struct elf_dyn_relocs *dyn_relocs;
569 /* Number of GOTPLT references for a function. */
570 bfd_signed_vma gotplt_refcount;
572 #define GOT_UNKNOWN 0
576 #define GOT_TLS_IE_NLT 3
577 unsigned char tls_type;
579 /* For pointer equality reasons we might need to change the symbol
580 type from STT_GNU_IFUNC to STT_FUNC together with its value and
581 section entry. So after alloc_dynrelocs only these values should
582 be used. In order to check whether a symbol is IFUNC use
583 s390_is_ifunc_symbol_p. */
584 bfd_vma ifunc_resolver_address;
585 asection *ifunc_resolver_section;
588 #define elf_s390_hash_entry(ent) \
589 ((struct elf_s390_link_hash_entry *)(ent))
591 /* This structure represents an entry in the local PLT list needed for
592 local IFUNC symbols. */
595 /* The section of the local symbol.
596 Set in relocate_section and used in finish_dynamic_sections. */
601 bfd_signed_vma refcount;
606 /* NOTE: Keep this structure in sync with
607 the one declared in elf32-s390.c. */
608 struct elf_s390_obj_tdata
610 struct elf_obj_tdata root;
612 /* A local PLT is needed for ifunc symbols. */
613 struct plt_entry *local_plt;
615 /* TLS type for each local got entry. */
616 char *local_got_tls_type;
619 #define elf_s390_tdata(abfd) \
620 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
622 #define elf_s390_local_plt(abfd) \
623 (elf_s390_tdata (abfd)->local_plt)
625 #define elf_s390_local_got_tls_type(abfd) \
626 (elf_s390_tdata (abfd)->local_got_tls_type)
628 #define is_s390_elf(bfd) \
629 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
630 && elf_tdata (bfd) != NULL \
631 && elf_object_id (bfd) == S390_ELF_DATA)
634 elf_s390_mkobject (bfd *abfd)
636 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
641 elf_s390_object_p (bfd *abfd)
643 /* Set the right machine number for an s390 elf32 file. */
644 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
647 /* s390 ELF linker hash table. */
649 struct elf_s390_link_hash_table
651 struct elf_link_hash_table elf;
653 /* Short-cuts to get to dynamic linker sections. */
659 bfd_signed_vma refcount;
663 /* Small local sym cache. */
664 struct sym_cache sym_cache;
667 /* Get the s390 ELF linker hash table from a link_info structure. */
669 #define elf_s390_hash_table(p) \
670 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
671 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
674 #include "elf-s390-common.c"
676 /* Create an entry in an s390 ELF linker hash table. */
678 static struct bfd_hash_entry *
679 link_hash_newfunc (struct bfd_hash_entry *entry,
680 struct bfd_hash_table *table,
683 /* Allocate the structure if it has not already been allocated by a
687 entry = bfd_hash_allocate (table,
688 sizeof (struct elf_s390_link_hash_entry));
693 /* Call the allocation method of the superclass. */
694 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
697 struct elf_s390_link_hash_entry *eh;
699 eh = (struct elf_s390_link_hash_entry *) entry;
700 eh->dyn_relocs = NULL;
701 eh->gotplt_refcount = 0;
702 eh->tls_type = GOT_UNKNOWN;
703 eh->ifunc_resolver_address = 0;
704 eh->ifunc_resolver_section = NULL;
710 /* Create an s390 ELF linker hash table. */
712 static struct bfd_link_hash_table *
713 elf_s390_link_hash_table_create (bfd *abfd)
715 struct elf_s390_link_hash_table *ret;
716 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
718 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
722 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
723 sizeof (struct elf_s390_link_hash_entry),
730 return &ret->elf.root;
733 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
734 shortcuts to them in our hash table. */
737 create_got_section (bfd *dynobj,
738 struct bfd_link_info *info)
740 struct elf_s390_link_hash_table *htab;
742 if (! _bfd_elf_create_got_section (dynobj, info))
745 htab = elf_s390_hash_table (info);
749 htab->elf.sgot = bfd_get_linker_section (dynobj, ".got");
750 htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
751 htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got");
752 if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot)
757 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
758 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
762 elf_s390_create_dynamic_sections (bfd *dynobj,
763 struct bfd_link_info *info)
765 struct elf_s390_link_hash_table *htab;
767 htab = elf_s390_hash_table (info);
771 if (!htab->elf.sgot && !create_got_section (dynobj, info))
774 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
777 htab->elf.splt = bfd_get_linker_section (dynobj, ".plt");
778 htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt");
779 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
780 if (!bfd_link_pic (info))
781 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
783 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
784 || (!bfd_link_pic (info) && !htab->srelbss))
790 /* Copy the extra info we tack onto an elf_link_hash_entry. */
793 elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
794 struct elf_link_hash_entry *dir,
795 struct elf_link_hash_entry *ind)
797 struct elf_s390_link_hash_entry *edir, *eind;
799 edir = (struct elf_s390_link_hash_entry *) dir;
800 eind = (struct elf_s390_link_hash_entry *) ind;
802 if (eind->dyn_relocs != NULL)
804 if (edir->dyn_relocs != NULL)
806 struct elf_dyn_relocs **pp;
807 struct elf_dyn_relocs *p;
809 /* Add reloc counts against the indirect sym to the direct sym
810 list. Merge any entries against the same section. */
811 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
813 struct elf_dyn_relocs *q;
815 for (q = edir->dyn_relocs; q != NULL; q = q->next)
816 if (q->sec == p->sec)
818 q->pc_count += p->pc_count;
819 q->count += p->count;
826 *pp = edir->dyn_relocs;
829 edir->dyn_relocs = eind->dyn_relocs;
830 eind->dyn_relocs = NULL;
833 if (ind->root.type == bfd_link_hash_indirect
834 && dir->got.refcount <= 0)
836 edir->tls_type = eind->tls_type;
837 eind->tls_type = GOT_UNKNOWN;
840 if (ELIMINATE_COPY_RELOCS
841 && ind->root.type != bfd_link_hash_indirect
842 && dir->dynamic_adjusted)
844 /* If called to transfer flags for a weakdef during processing
845 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
846 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
847 dir->ref_dynamic |= ind->ref_dynamic;
848 dir->ref_regular |= ind->ref_regular;
849 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
850 dir->needs_plt |= ind->needs_plt;
853 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
857 elf_s390_tls_transition (struct bfd_link_info *info,
861 if (bfd_link_pic (info))
869 return R_390_TLS_LE64;
870 return R_390_TLS_IE64;
871 case R_390_TLS_GOTIE64:
873 return R_390_TLS_LE64;
874 return R_390_TLS_GOTIE64;
875 case R_390_TLS_LDM64:
876 return R_390_TLS_LE64;
882 /* Look through the relocs for a section during the first phase, and
883 allocate space in the global offset table or procedure linkage
887 elf_s390_check_relocs (bfd *abfd,
888 struct bfd_link_info *info,
890 const Elf_Internal_Rela *relocs)
892 struct elf_s390_link_hash_table *htab;
893 Elf_Internal_Shdr *symtab_hdr;
894 struct elf_link_hash_entry **sym_hashes;
895 const Elf_Internal_Rela *rel;
896 const Elf_Internal_Rela *rel_end;
898 bfd_signed_vma *local_got_refcounts;
899 int tls_type, old_tls_type;
901 if (bfd_link_relocatable (info))
904 BFD_ASSERT (is_s390_elf (abfd));
906 htab = elf_s390_hash_table (info);
910 symtab_hdr = &elf_symtab_hdr (abfd);
911 sym_hashes = elf_sym_hashes (abfd);
912 local_got_refcounts = elf_local_got_refcounts (abfd);
916 rel_end = relocs + sec->reloc_count;
917 for (rel = relocs; rel < rel_end; rel++)
920 unsigned long r_symndx;
921 struct elf_link_hash_entry *h;
922 Elf_Internal_Sym *isym;
924 r_symndx = ELF64_R_SYM (rel->r_info);
926 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
928 /* xgettext:c-format */
929 _bfd_error_handler (_("%B: bad symbol index: %d"),
934 if (r_symndx < symtab_hdr->sh_info)
936 /* A local symbol. */
937 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
942 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
944 struct plt_entry *plt;
946 if (htab->elf.dynobj == NULL)
947 htab->elf.dynobj = abfd;
949 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
952 if (local_got_refcounts == NULL)
954 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
956 local_got_refcounts = elf_local_got_refcounts (abfd);
958 plt = elf_s390_local_plt (abfd);
959 plt[r_symndx].plt.refcount++;
965 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
966 while (h->root.type == bfd_link_hash_indirect
967 || h->root.type == bfd_link_hash_warning)
968 h = (struct elf_link_hash_entry *) h->root.u.i.link;
970 /* PR15323, ref flags aren't set for references in the same
972 h->root.non_ir_ref = 1;
975 /* Create got section and local_got_refcounts array if they
977 r_type = elf_s390_tls_transition (info,
978 ELF64_R_TYPE (rel->r_info),
993 case R_390_GOTPLTENT:
995 case R_390_TLS_GOTIE12:
996 case R_390_TLS_GOTIE20:
997 case R_390_TLS_GOTIE64:
998 case R_390_TLS_IEENT:
1000 case R_390_TLS_LDM64:
1002 && local_got_refcounts == NULL)
1004 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
1006 local_got_refcounts = elf_local_got_refcounts (abfd);
1010 case R_390_GOTOFF16:
1011 case R_390_GOTOFF32:
1012 case R_390_GOTOFF64:
1014 case R_390_GOTPCDBL:
1015 if (htab->elf.sgot == NULL)
1017 if (htab->elf.dynobj == NULL)
1018 htab->elf.dynobj = abfd;
1019 if (!create_got_section (htab->elf.dynobj, info))
1026 if (htab->elf.dynobj == NULL)
1027 htab->elf.dynobj = abfd;
1028 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1031 /* Make sure an IFUNC symbol defined in a non-shared object
1032 always gets a PLT slot. */
1033 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1035 /* The symbol is called by the dynamic loader in order
1036 to resolve the relocation. So it is in fact also
1046 case R_390_GOTPCDBL:
1047 /* These relocs do not need a GOT slot. They just load the
1048 GOT pointer itself or address something else relative to
1049 the GOT. Since the GOT pointer has been set up above we
1052 case R_390_GOTOFF16:
1053 case R_390_GOTOFF32:
1054 case R_390_GOTOFF64:
1055 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
1059 case R_390_PLT12DBL:
1060 case R_390_PLT16DBL:
1061 case R_390_PLT24DBL:
1063 case R_390_PLT32DBL:
1065 case R_390_PLTOFF16:
1066 case R_390_PLTOFF32:
1067 case R_390_PLTOFF64:
1068 /* This symbol requires a procedure linkage table entry. We
1069 actually build the entry in adjust_dynamic_symbol,
1070 because this might be a case of linking PIC code which is
1071 never referenced by a dynamic object, in which case we
1072 don't need to generate a procedure linkage table entry
1075 /* If this is a local symbol, we resolve it directly without
1076 creating a procedure linkage table entry. */
1080 h->plt.refcount += 1;
1084 case R_390_GOTPLT12:
1085 case R_390_GOTPLT16:
1086 case R_390_GOTPLT20:
1087 case R_390_GOTPLT32:
1088 case R_390_GOTPLT64:
1089 case R_390_GOTPLTENT:
1090 /* This symbol requires either a procedure linkage table entry
1091 or an entry in the local got. We actually build the entry
1092 in adjust_dynamic_symbol because whether this is really a
1093 global reference can change and with it the fact if we have
1094 to create a plt entry or a local got entry. To be able to
1095 make a once global symbol a local one we have to keep track
1096 of the number of gotplt references that exist for this
1100 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1102 h->plt.refcount += 1;
1105 local_got_refcounts[r_symndx] += 1;
1108 case R_390_TLS_LDM64:
1109 htab->tls_ldm_got.refcount += 1;
1112 case R_390_TLS_IE64:
1113 case R_390_TLS_GOTIE12:
1114 case R_390_TLS_GOTIE20:
1115 case R_390_TLS_GOTIE64:
1116 case R_390_TLS_IEENT:
1117 if (bfd_link_pic (info))
1118 info->flags |= DF_STATIC_TLS;
1127 case R_390_TLS_GD64:
1128 /* This symbol requires a global offset table entry. */
1137 tls_type = GOT_NORMAL;
1139 case R_390_TLS_GD64:
1140 tls_type = GOT_TLS_GD;
1142 case R_390_TLS_IE64:
1143 case R_390_TLS_GOTIE64:
1144 tls_type = GOT_TLS_IE;
1146 case R_390_TLS_GOTIE12:
1147 case R_390_TLS_GOTIE20:
1148 case R_390_TLS_IEENT:
1149 tls_type = GOT_TLS_IE_NLT;
1155 h->got.refcount += 1;
1156 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1160 local_got_refcounts[r_symndx] += 1;
1161 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1163 /* If a TLS symbol is accessed using IE at least once,
1164 there is no point to use dynamic model for it. */
1165 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1167 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1170 /* xgettext:c-format */
1171 (_("%B: `%s' accessed both as normal and thread local symbol"),
1172 abfd, h->root.root.string);
1175 if (old_tls_type > tls_type)
1176 tls_type = old_tls_type;
1179 if (old_tls_type != tls_type)
1182 elf_s390_hash_entry (h)->tls_type = tls_type;
1184 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1187 if (r_type != R_390_TLS_IE64)
1191 case R_390_TLS_LE64:
1192 /* For static linking and executables this reloc will be
1193 calculated at linktime otherwise a TLS_TPOFF runtime
1194 reloc will be generated. */
1195 if (r_type == R_390_TLS_LE64 && bfd_link_pie (info))
1198 if (!bfd_link_pic (info))
1200 info->flags |= DF_STATIC_TLS;
1214 if (h != NULL && bfd_link_executable (info))
1216 /* If this reloc is in a read-only section, we might
1217 need a copy reloc. We can't check reliably at this
1218 stage whether the section is read-only, as input
1219 sections have not yet been mapped to output sections.
1220 Tentatively set the flag for now, and correct in
1221 adjust_dynamic_symbol. */
1224 if (!bfd_link_pic (info))
1226 /* We may need a .plt entry if the function this reloc
1227 refers to is in a shared lib. */
1228 h->plt.refcount += 1;
1232 /* If we are creating a shared library, and this is a reloc
1233 against a global symbol, or a non PC relative reloc
1234 against a local symbol, then we need to copy the reloc
1235 into the shared library. However, if we are linking with
1236 -Bsymbolic, we do not need to copy a reloc against a
1237 global symbol which is defined in an object we are
1238 including in the link (i.e., DEF_REGULAR is set). At
1239 this point we have not seen all the input files, so it is
1240 possible that DEF_REGULAR is not set now but will be set
1241 later (it is never cleared). In case of a weak definition,
1242 DEF_REGULAR may be cleared later by a strong definition in
1243 a shared library. We account for that possibility below by
1244 storing information in the relocs_copied field of the hash
1245 table entry. A similar situation occurs when creating
1246 shared libraries and symbol visibility changes render the
1249 If on the other hand, we are creating an executable, we
1250 may need to keep relocations for symbols satisfied by a
1251 dynamic library if we manage to avoid copy relocs for the
1253 if ((bfd_link_pic (info)
1254 && (sec->flags & SEC_ALLOC) != 0
1255 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
1256 && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
1257 && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
1258 && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL
1259 && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1260 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1261 && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1263 && (! SYMBOLIC_BIND (info, h)
1264 || h->root.type == bfd_link_hash_defweak
1265 || !h->def_regular))))
1266 || (ELIMINATE_COPY_RELOCS
1267 && !bfd_link_pic (info)
1268 && (sec->flags & SEC_ALLOC) != 0
1270 && (h->root.type == bfd_link_hash_defweak
1271 || !h->def_regular)))
1273 struct elf_dyn_relocs *p;
1274 struct elf_dyn_relocs **head;
1276 /* We must copy these reloc types into the output file.
1277 Create a reloc section in dynobj and make room for
1281 if (htab->elf.dynobj == NULL)
1282 htab->elf.dynobj = abfd;
1284 sreloc = _bfd_elf_make_dynamic_reloc_section
1285 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
1291 /* If this is a global symbol, we count the number of
1292 relocations we need for this symbol. */
1295 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1299 /* Track dynamic relocs needed for local syms too.
1300 We really need local syms available to do this
1305 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1310 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1314 vpp = &elf_section_data (s)->local_dynrel;
1315 head = (struct elf_dyn_relocs **) vpp;
1319 if (p == NULL || p->sec != sec)
1321 bfd_size_type amt = sizeof *p;
1322 p = ((struct elf_dyn_relocs *)
1323 bfd_alloc (htab->elf.dynobj, amt));
1334 if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
1335 || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL
1336 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1337 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1338 || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1339 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1340 || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1345 /* This relocation describes the C++ object vtable hierarchy.
1346 Reconstruct it for later use during GC. */
1347 case R_390_GNU_VTINHERIT:
1348 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1352 /* This relocation describes which C++ vtable entries are actually
1353 used. Record for later use during GC. */
1354 case R_390_GNU_VTENTRY:
1355 BFD_ASSERT (h != NULL);
1357 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1369 /* Return the section that should be marked against GC for a given
1373 elf_s390_gc_mark_hook (asection *sec,
1374 struct bfd_link_info *info,
1375 Elf_Internal_Rela *rel,
1376 struct elf_link_hash_entry *h,
1377 Elf_Internal_Sym *sym)
1380 switch (ELF64_R_TYPE (rel->r_info))
1382 case R_390_GNU_VTINHERIT:
1383 case R_390_GNU_VTENTRY:
1387 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1390 /* Update the got entry reference counts for the section being removed. */
1393 elf_s390_gc_sweep_hook (bfd *abfd,
1394 struct bfd_link_info *info,
1396 const Elf_Internal_Rela *relocs)
1398 struct elf_s390_link_hash_table *htab;
1399 Elf_Internal_Shdr *symtab_hdr;
1400 struct elf_link_hash_entry **sym_hashes;
1401 bfd_signed_vma *local_got_refcounts;
1402 const Elf_Internal_Rela *rel, *relend;
1404 if (bfd_link_relocatable (info))
1407 htab = elf_s390_hash_table (info);
1411 elf_section_data (sec)->local_dynrel = NULL;
1413 symtab_hdr = &elf_symtab_hdr (abfd);
1414 sym_hashes = elf_sym_hashes (abfd);
1415 local_got_refcounts = elf_local_got_refcounts (abfd);
1417 relend = relocs + sec->reloc_count;
1418 for (rel = relocs; rel < relend; rel++)
1420 unsigned long r_symndx;
1421 unsigned int r_type;
1422 struct elf_link_hash_entry *h = NULL;
1424 r_symndx = ELF64_R_SYM (rel->r_info);
1425 if (r_symndx >= symtab_hdr->sh_info)
1427 struct elf_s390_link_hash_entry *eh;
1428 struct elf_dyn_relocs **pp;
1429 struct elf_dyn_relocs *p;
1431 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1432 while (h->root.type == bfd_link_hash_indirect
1433 || h->root.type == bfd_link_hash_warning)
1434 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1435 eh = (struct elf_s390_link_hash_entry *) h;
1437 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1440 /* Everything must go for SEC. */
1447 Elf_Internal_Sym *isym;
1449 /* A local symbol. */
1450 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1455 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1457 struct plt_entry *plt = elf_s390_local_plt (abfd);
1458 if (plt[r_symndx].plt.refcount > 0)
1459 plt[r_symndx].plt.refcount--;
1463 r_type = ELF64_R_TYPE (rel->r_info);
1464 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1467 case R_390_TLS_LDM64:
1468 if (htab->tls_ldm_got.refcount > 0)
1469 htab->tls_ldm_got.refcount -= 1;
1471 case R_390_GOTOFF16:
1472 case R_390_GOTOFF32:
1473 case R_390_GOTOFF64:
1474 if (h != NULL && s390_is_ifunc_symbol_p (h) && h->def_regular)
1481 case R_390_GOTPCDBL:
1484 case R_390_TLS_GD64:
1485 case R_390_TLS_IE64:
1486 case R_390_TLS_GOTIE12:
1487 case R_390_TLS_GOTIE20:
1488 case R_390_TLS_GOTIE64:
1489 case R_390_TLS_IEENT:
1498 if (h->got.refcount > 0)
1499 h->got.refcount -= 1;
1501 else if (local_got_refcounts != NULL)
1503 if (local_got_refcounts[r_symndx] > 0)
1504 local_got_refcounts[r_symndx] -= 1;
1521 if (bfd_link_pic (info))
1525 case R_390_PLT12DBL:
1526 case R_390_PLT16DBL:
1527 case R_390_PLT24DBL:
1529 case R_390_PLT32DBL:
1531 case R_390_PLTOFF16:
1532 case R_390_PLTOFF32:
1533 case R_390_PLTOFF64:
1536 if (h->plt.refcount > 0)
1537 h->plt.refcount -= 1;
1541 case R_390_GOTPLT12:
1542 case R_390_GOTPLT16:
1543 case R_390_GOTPLT20:
1544 case R_390_GOTPLT32:
1545 case R_390_GOTPLT64:
1546 case R_390_GOTPLTENT:
1549 if (h->plt.refcount > 0)
1551 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1552 h->plt.refcount -= 1;
1555 else if (local_got_refcounts != NULL)
1557 if (local_got_refcounts[r_symndx] > 0)
1558 local_got_refcounts[r_symndx] -= 1;
1570 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1571 entry but we found we will not create any. Called when we find we will
1572 not have any PLT for this symbol, by for example
1573 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1574 or elf_s390_size_dynamic_sections if no dynamic sections will be
1575 created (we're only linking static objects). */
1578 elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
1580 if (h->elf.root.type == bfd_link_hash_warning)
1581 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1583 if (h->gotplt_refcount <= 0)
1586 /* We simply add the number of gotplt references to the number
1587 * of got references for this symbol. */
1588 h->elf.got.refcount += h->gotplt_refcount;
1589 h->gotplt_refcount = -1;
1592 /* Adjust a symbol defined by a dynamic object and referenced by a
1593 regular object. The current definition is in some section of the
1594 dynamic object, but we're not including those sections. We have to
1595 change the definition to something the rest of the link can
1599 elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1600 struct elf_link_hash_entry *h)
1602 struct elf_s390_link_hash_table *htab;
1605 /* STT_GNU_IFUNC symbol must go through PLT. */
1606 if (s390_is_ifunc_symbol_p (h))
1608 /* All local STT_GNU_IFUNC references must be treated as local
1609 calls via local PLT. */
1610 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1612 bfd_size_type pc_count = 0, count = 0;
1613 struct elf_dyn_relocs **pp;
1614 struct elf_s390_link_hash_entry *eh;
1615 struct elf_dyn_relocs *p;
1617 eh = (struct elf_s390_link_hash_entry *) h;
1618 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1620 pc_count += p->pc_count;
1621 p->count -= p->pc_count;
1630 if (pc_count || count)
1634 if (h->plt.refcount <= 0)
1635 h->plt.refcount = 1;
1637 h->plt.refcount += 1;
1641 if (h->plt.refcount <= 0)
1643 h->plt.offset = (bfd_vma) -1;
1649 /* If this is a function, put it in the procedure linkage table. We
1650 will fill in the contents of the procedure linkage table later
1651 (although we could actually do it here). */
1652 if (h->type == STT_FUNC
1655 if (h->plt.refcount <= 0
1656 || SYMBOL_CALLS_LOCAL (info, h)
1657 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1658 && h->root.type == bfd_link_hash_undefweak))
1660 /* This case can occur if we saw a PLT32 reloc in an input
1661 file, but the symbol was never referred to by a dynamic
1662 object, or if all references were garbage collected. In
1663 such a case, we don't actually need to build a procedure
1664 linkage table, and we can just do a PC32 reloc instead. */
1665 h->plt.offset = (bfd_vma) -1;
1667 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1673 /* It's possible that we incorrectly decided a .plt reloc was
1674 needed for an R_390_PC32 reloc to a non-function sym in
1675 check_relocs. We can't decide accurately between function and
1676 non-function syms in check-relocs; Objects loaded later in
1677 the link may change h->type. So fix it now. */
1678 h->plt.offset = (bfd_vma) -1;
1680 /* If this is a weak symbol, and there is a real definition, the
1681 processor independent code will have arranged for us to see the
1682 real definition first, and we can just use the same value. */
1683 if (h->u.weakdef != NULL)
1685 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1686 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1687 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1688 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1689 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1690 h->non_got_ref = h->u.weakdef->non_got_ref;
1694 /* This is a reference to a symbol defined by a dynamic object which
1695 is not a function. */
1697 /* If we are creating a shared library, we must presume that the
1698 only references to the symbol are via the global offset table.
1699 For such cases we need not do anything here; the relocations will
1700 be handled correctly by relocate_section. */
1701 if (bfd_link_pic (info))
1704 /* If there are no references to this symbol that do not use the
1705 GOT, we don't need to generate a copy reloc. */
1706 if (!h->non_got_ref)
1709 /* If -z nocopyreloc was given, we won't generate them either. */
1710 if (info->nocopyreloc)
1716 if (ELIMINATE_COPY_RELOCS)
1718 struct elf_s390_link_hash_entry * eh;
1719 struct elf_dyn_relocs *p;
1721 eh = (struct elf_s390_link_hash_entry *) h;
1722 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1724 s = p->sec->output_section;
1725 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1729 /* If we didn't find any dynamic relocs in read-only sections, then
1730 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1738 /* We must allocate the symbol in our .dynbss section, which will
1739 become part of the .bss section of the executable. There will be
1740 an entry for this symbol in the .dynsym section. The dynamic
1741 object will contain position independent code, so all references
1742 from the dynamic object to this symbol will go through the global
1743 offset table. The dynamic linker will use the .dynsym entry to
1744 determine the address it must put in the global offset table, so
1745 both the dynamic object and the regular object will refer to the
1746 same memory location for the variable. */
1748 htab = elf_s390_hash_table (info);
1752 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1753 copy the initial value out of the dynamic object and into the
1754 runtime process image. */
1755 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
1757 htab->srelbss->size += sizeof (Elf64_External_Rela);
1763 return _bfd_elf_adjust_dynamic_copy (info, h, s);
1766 /* Allocate space in .plt, .got and associated reloc sections for
1770 allocate_dynrelocs (struct elf_link_hash_entry *h,
1773 struct bfd_link_info *info;
1774 struct elf_s390_link_hash_table *htab;
1775 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
1776 struct elf_dyn_relocs *p;
1778 if (h->root.type == bfd_link_hash_indirect)
1781 info = (struct bfd_link_info *) inf;
1782 htab = elf_s390_hash_table (info);
1786 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1787 here if it is defined and referenced in a non-shared object. */
1788 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1789 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
1790 else if (htab->elf.dynamic_sections_created
1791 && h->plt.refcount > 0)
1793 /* Make sure this symbol is output as a dynamic symbol.
1794 Undefined weak syms won't yet be marked as dynamic. */
1795 if (h->dynindx == -1
1796 && !h->forced_local)
1798 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1802 if (bfd_link_pic (info)
1803 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1805 asection *s = htab->elf.splt;
1807 /* If this is the first .plt entry, make room for the special
1810 s->size += PLT_FIRST_ENTRY_SIZE;
1812 h->plt.offset = s->size;
1814 /* If this symbol is not defined in a regular file, and we are
1815 not generating a shared library, then set the symbol to this
1816 location in the .plt. This is required to make function
1817 pointers compare as equal between the normal executable and
1818 the shared library. */
1819 if (! bfd_link_pic (info)
1822 h->root.u.def.section = s;
1823 h->root.u.def.value = h->plt.offset;
1826 /* Make room for this entry. */
1827 s->size += PLT_ENTRY_SIZE;
1829 /* We also need to make an entry in the .got.plt section, which
1830 will be placed in the .got section by the linker script. */
1831 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
1833 /* We also need to make an entry in the .rela.plt section. */
1834 htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
1838 h->plt.offset = (bfd_vma) -1;
1840 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1845 h->plt.offset = (bfd_vma) -1;
1847 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1850 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1851 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1852 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1853 we can save the dynamic TLS relocation. */
1854 if (h->got.refcount > 0
1855 && !bfd_link_pic (info)
1857 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1859 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1860 /* For the GOTIE access without a literal pool entry the offset has
1861 to be stored somewhere. The immediate value in the instruction
1862 is not bit enough so the value is stored in the got. */
1864 h->got.offset = htab->elf.sgot->size;
1865 htab->elf.sgot->size += GOT_ENTRY_SIZE;
1868 h->got.offset = (bfd_vma) -1;
1870 else if (h->got.refcount > 0)
1874 int tls_type = elf_s390_hash_entry(h)->tls_type;
1876 /* Make sure this symbol is output as a dynamic symbol.
1877 Undefined weak syms won't yet be marked as dynamic. */
1878 if (h->dynindx == -1
1879 && !h->forced_local)
1881 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1886 h->got.offset = s->size;
1887 s->size += GOT_ENTRY_SIZE;
1888 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1889 if (tls_type == GOT_TLS_GD)
1890 s->size += GOT_ENTRY_SIZE;
1891 dyn = htab->elf.dynamic_sections_created;
1892 /* R_390_TLS_IE64 needs one dynamic relocation,
1893 R_390_TLS_GD64 needs one if local symbol and two if global. */
1894 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1895 || tls_type >= GOT_TLS_IE)
1896 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
1897 else if (tls_type == GOT_TLS_GD)
1898 htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
1899 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1900 || h->root.type != bfd_link_hash_undefweak)
1901 && (bfd_link_pic (info)
1902 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1903 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
1906 h->got.offset = (bfd_vma) -1;
1908 if (eh->dyn_relocs == NULL)
1911 /* In the shared -Bsymbolic case, discard space allocated for
1912 dynamic pc-relative relocs against symbols which turn out to be
1913 defined in regular objects. For the normal shared case, discard
1914 space for pc-relative relocs that have become local due to symbol
1915 visibility changes. */
1917 if (bfd_link_pic (info))
1919 if (SYMBOL_CALLS_LOCAL (info, h))
1921 struct elf_dyn_relocs **pp;
1923 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1925 p->count -= p->pc_count;
1934 /* Also discard relocs on undefined weak syms with non-default
1936 if (eh->dyn_relocs != NULL
1937 && h->root.type == bfd_link_hash_undefweak)
1939 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1940 eh->dyn_relocs = NULL;
1942 /* Make sure undefined weak symbols are output as a dynamic
1944 else if (h->dynindx == -1
1945 && !h->forced_local)
1947 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1952 else if (ELIMINATE_COPY_RELOCS)
1954 /* For the non-shared case, discard space for relocs against
1955 symbols which turn out to need copy relocs or are not
1961 || (htab->elf.dynamic_sections_created
1962 && (h->root.type == bfd_link_hash_undefweak
1963 || h->root.type == bfd_link_hash_undefined))))
1965 /* Make sure this symbol is output as a dynamic symbol.
1966 Undefined weak syms won't yet be marked as dynamic. */
1967 if (h->dynindx == -1
1968 && !h->forced_local)
1970 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1974 /* If that succeeded, we know we'll be keeping all the
1976 if (h->dynindx != -1)
1980 eh->dyn_relocs = NULL;
1985 /* Finally, allocate space. */
1986 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1988 asection *sreloc = elf_section_data (p->sec)->sreloc;
1989 sreloc->size += p->count * sizeof (Elf64_External_Rela);
1995 /* Find any dynamic relocs that apply to read-only sections. */
1998 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2000 struct elf_s390_link_hash_entry *eh;
2001 struct elf_dyn_relocs *p;
2003 eh = (struct elf_s390_link_hash_entry *) h;
2004 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2006 asection *s = p->sec->output_section;
2008 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2010 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2012 info->flags |= DF_TEXTREL;
2014 /* Not an error, just cut short the traversal. */
2021 /* Set the sizes of the dynamic sections. */
2024 elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2025 struct bfd_link_info *info)
2027 struct elf_s390_link_hash_table *htab;
2033 htab = elf_s390_hash_table (info);
2037 dynobj = htab->elf.dynobj;
2041 if (htab->elf.dynamic_sections_created)
2043 /* Set the contents of the .interp section to the interpreter. */
2044 if (bfd_link_executable (info) && !info->nointerp)
2046 s = bfd_get_linker_section (dynobj, ".interp");
2049 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2050 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2054 /* Set up .got offsets for local syms, and space for local dynamic
2056 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2058 bfd_signed_vma *local_got;
2059 bfd_signed_vma *end_local_got;
2060 char *local_tls_type;
2061 bfd_size_type locsymcount;
2062 Elf_Internal_Shdr *symtab_hdr;
2064 struct plt_entry *local_plt;
2067 if (! is_s390_elf (ibfd))
2070 for (s = ibfd->sections; s != NULL; s = s->next)
2072 struct elf_dyn_relocs *p;
2074 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2076 if (!bfd_is_abs_section (p->sec)
2077 && bfd_is_abs_section (p->sec->output_section))
2079 /* Input section has been discarded, either because
2080 it is a copy of a linkonce section or due to
2081 linker script /DISCARD/, so we'll be discarding
2084 else if (p->count != 0)
2086 srela = elf_section_data (p->sec)->sreloc;
2087 srela->size += p->count * sizeof (Elf64_External_Rela);
2088 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2089 info->flags |= DF_TEXTREL;
2094 local_got = elf_local_got_refcounts (ibfd);
2098 symtab_hdr = &elf_symtab_hdr (ibfd);
2099 locsymcount = symtab_hdr->sh_info;
2100 end_local_got = local_got + locsymcount;
2101 local_tls_type = elf_s390_local_got_tls_type (ibfd);
2103 srela = htab->elf.srelgot;
2104 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2108 *local_got = s->size;
2109 s->size += GOT_ENTRY_SIZE;
2110 if (*local_tls_type == GOT_TLS_GD)
2111 s->size += GOT_ENTRY_SIZE;
2112 if (bfd_link_pic (info))
2113 srela->size += sizeof (Elf64_External_Rela);
2116 *local_got = (bfd_vma) -1;
2119 local_plt = elf_s390_local_plt (ibfd);
2120 for (i = 0; i < symtab_hdr->sh_info; i++)
2122 if (local_plt[i].plt.refcount > 0)
2124 local_plt[i].plt.offset = htab->elf.iplt->size;
2125 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2126 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2127 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
2130 local_plt[i].plt.offset = (bfd_vma) -1;
2134 if (htab->tls_ldm_got.refcount > 0)
2136 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
2138 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2139 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2140 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
2143 htab->tls_ldm_got.offset = -1;
2145 /* Allocate global sym .plt and .got entries, and space for global
2146 sym dynamic relocs. */
2147 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2149 /* We now have determined the sizes of the various dynamic sections.
2150 Allocate memory for them. */
2152 for (s = dynobj->sections; s != NULL; s = s->next)
2154 if ((s->flags & SEC_LINKER_CREATED) == 0)
2157 if (s == htab->elf.splt
2158 || s == htab->elf.sgot
2159 || s == htab->elf.sgotplt
2160 || s == htab->sdynbss
2161 || s == htab->elf.iplt
2162 || s == htab->elf.igotplt
2163 || s == htab->irelifunc)
2165 /* Strip this section if we don't need it; see the
2168 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2170 if (s->size != 0 && s != htab->elf.srelplt)
2173 /* We use the reloc_count field as a counter if we need
2174 to copy relocs into the output file. */
2179 /* It's not one of our sections, so don't allocate space. */
2185 /* If we don't need this section, strip it from the
2186 output file. This is to handle .rela.bss and
2187 .rela.plt. We must create it in
2188 create_dynamic_sections, because it must be created
2189 before the linker maps input sections to output
2190 sections. The linker does that before
2191 adjust_dynamic_symbol is called, and it is that
2192 function which decides whether anything needs to go
2193 into these sections. */
2195 s->flags |= SEC_EXCLUDE;
2199 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2202 /* Allocate memory for the section contents. We use bfd_zalloc
2203 here in case unused entries are not reclaimed before the
2204 section's contents are written out. This should not happen,
2205 but this way if it does, we get a R_390_NONE reloc instead
2207 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2208 if (s->contents == NULL)
2212 if (htab->elf.dynamic_sections_created)
2214 /* Add some entries to the .dynamic section. We fill in the
2215 values later, in elf_s390_finish_dynamic_sections, but we
2216 must add the entries now so that we get the correct size for
2217 the .dynamic section. The DT_DEBUG entry is filled in by the
2218 dynamic linker and used by the debugger. */
2219 #define add_dynamic_entry(TAG, VAL) \
2220 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2222 if (bfd_link_executable (info))
2224 if (!add_dynamic_entry (DT_DEBUG, 0))
2228 if (htab->elf.splt->size != 0)
2230 if (!add_dynamic_entry (DT_PLTGOT, 0)
2231 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2232 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2233 || !add_dynamic_entry (DT_JMPREL, 0))
2239 if (!add_dynamic_entry (DT_RELA, 0)
2240 || !add_dynamic_entry (DT_RELASZ, 0)
2241 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
2244 /* If any dynamic relocs apply to a read-only section,
2245 then we need a DT_TEXTREL entry. */
2246 if ((info->flags & DF_TEXTREL) == 0)
2247 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2250 if ((info->flags & DF_TEXTREL) != 0)
2252 if (!add_dynamic_entry (DT_TEXTREL, 0))
2257 #undef add_dynamic_entry
2262 /* Return the base VMA address which should be subtracted from real addresses
2263 when resolving @dtpoff relocation.
2264 This is PT_TLS segment p_vaddr. */
2267 dtpoff_base (struct bfd_link_info *info)
2269 /* If tls_sec is NULL, we should have signalled an error already. */
2270 if (elf_hash_table (info)->tls_sec == NULL)
2272 return elf_hash_table (info)->tls_sec->vma;
2275 /* Return the relocation value for @tpoff relocation
2276 if STT_TLS virtual address is ADDRESS. */
2279 tpoff (struct bfd_link_info *info, bfd_vma address)
2281 struct elf_link_hash_table *htab = elf_hash_table (info);
2283 /* If tls_sec is NULL, we should have signalled an error already. */
2284 if (htab->tls_sec == NULL)
2286 return htab->tls_size + htab->tls_sec->vma - address;
2289 /* Complain if TLS instruction relocation is against an invalid
2293 invalid_tls_insn (bfd *input_bfd,
2294 asection *input_section,
2295 Elf_Internal_Rela *rel)
2297 reloc_howto_type *howto;
2299 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
2301 /* xgettext:c-format */
2302 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2305 (long) rel->r_offset,
2307 bfd_set_error (bfd_error_bad_value);
2310 /* Relocate a 390 ELF section. */
2313 elf_s390_relocate_section (bfd *output_bfd,
2314 struct bfd_link_info *info,
2316 asection *input_section,
2318 Elf_Internal_Rela *relocs,
2319 Elf_Internal_Sym *local_syms,
2320 asection **local_sections)
2322 struct elf_s390_link_hash_table *htab;
2323 Elf_Internal_Shdr *symtab_hdr;
2324 struct elf_link_hash_entry **sym_hashes;
2325 bfd_vma *local_got_offsets;
2326 Elf_Internal_Rela *rel;
2327 Elf_Internal_Rela *relend;
2329 BFD_ASSERT (is_s390_elf (input_bfd));
2331 htab = elf_s390_hash_table (info);
2335 symtab_hdr = &elf_symtab_hdr (input_bfd);
2336 sym_hashes = elf_sym_hashes (input_bfd);
2337 local_got_offsets = elf_local_got_offsets (input_bfd);
2340 relend = relocs + input_section->reloc_count;
2341 for (; rel < relend; rel++)
2343 unsigned int r_type;
2344 reloc_howto_type *howto;
2345 unsigned long r_symndx;
2346 struct elf_link_hash_entry *h;
2347 Elf_Internal_Sym *sym;
2351 bfd_boolean unresolved_reloc;
2352 bfd_reloc_status_type r;
2354 asection *base_got = htab->elf.sgot;
2356 r_type = ELF64_R_TYPE (rel->r_info);
2357 if (r_type == (int) R_390_GNU_VTINHERIT
2358 || r_type == (int) R_390_GNU_VTENTRY)
2360 if (r_type >= (int) R_390_max)
2362 bfd_set_error (bfd_error_bad_value);
2366 howto = elf_howto_table + r_type;
2367 r_symndx = ELF64_R_SYM (rel->r_info);
2372 unresolved_reloc = FALSE;
2373 if (r_symndx < symtab_hdr->sh_info)
2375 sym = local_syms + r_symndx;
2376 sec = local_sections[r_symndx];
2378 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2380 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2381 if (local_plt == NULL)
2384 /* Address of the PLT slot. */
2385 relocation = (htab->elf.iplt->output_section->vma
2386 + htab->elf.iplt->output_offset
2387 + local_plt[r_symndx].plt.offset);
2391 case R_390_PLTOFF16:
2392 case R_390_PLTOFF32:
2393 case R_390_PLTOFF64:
2394 relocation -= htab->elf.sgot->output_section->vma;
2396 case R_390_GOTPLT12:
2397 case R_390_GOTPLT16:
2398 case R_390_GOTPLT20:
2399 case R_390_GOTPLT32:
2400 case R_390_GOTPLT64:
2401 case R_390_GOTPLTENT:
2409 /* Write the PLT slot address into the GOT slot. */
2410 bfd_put_64 (output_bfd, relocation,
2411 htab->elf.sgot->contents +
2412 local_got_offsets[r_symndx]);
2413 relocation = (local_got_offsets[r_symndx] +
2414 htab->elf.sgot->output_offset);
2416 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2417 relocation += htab->elf.sgot->output_section->vma;
2423 /* The output section is needed later in
2424 finish_dynamic_section when creating the dynamic
2426 local_plt[r_symndx].sec = sec;
2430 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2434 bfd_boolean warned ATTRIBUTE_UNUSED;
2435 bfd_boolean ignored ATTRIBUTE_UNUSED;
2437 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2438 r_symndx, symtab_hdr, sym_hashes,
2440 unresolved_reloc, warned, ignored);
2443 if (sec != NULL && discarded_section (sec))
2444 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2445 rel, 1, relend, howto, 0, contents);
2447 if (bfd_link_relocatable (info))
2452 case R_390_GOTPLT12:
2453 case R_390_GOTPLT16:
2454 case R_390_GOTPLT20:
2455 case R_390_GOTPLT32:
2456 case R_390_GOTPLT64:
2457 case R_390_GOTPLTENT:
2458 /* There are three cases for a GOTPLT relocation. 1) The
2459 relocation is against the jump slot entry of a plt that
2460 will get emitted to the output file. 2) The relocation
2461 is against the jump slot of a plt entry that has been
2462 removed. elf_s390_adjust_gotplt has created a GOT entry
2463 as replacement. 3) The relocation is against a local symbol.
2464 Cases 2) and 3) are the same as the GOT relocation code
2465 so we just have to test for case 1 and fall through for
2467 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2471 if (s390_is_ifunc_symbol_p (h))
2473 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2474 relocation = (plt_index * GOT_ENTRY_SIZE +
2475 htab->elf.igotplt->output_offset);
2476 if (r_type == R_390_GOTPLTENT)
2477 relocation += htab->elf.igotplt->output_section->vma;
2482 Current offset - size first entry / entry size. */
2483 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2486 /* Offset in GOT is PLT index plus GOT headers(3)
2487 times 8, addr & GOT addr. */
2488 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2489 if (r_type == R_390_GOTPLTENT)
2490 relocation += htab->elf.sgot->output_section->vma;
2492 unresolved_reloc = FALSE;
2503 /* Relocation is to the entry for this symbol in the global
2505 if (base_got == NULL)
2512 off = h->got.offset;
2513 dyn = htab->elf.dynamic_sections_created;
2515 if (s390_is_ifunc_symbol_p (h))
2517 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2518 if (off == (bfd_vma)-1)
2520 /* No explicit GOT usage so redirect to the
2522 base_got = htab->elf.igotplt;
2523 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2527 /* Explicit GOT slots must contain the address
2528 of the PLT slot. This will be handled in
2529 finish_dynamic_symbol. */
2532 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2533 bfd_link_pic (info),
2535 || (bfd_link_pic (info)
2536 && SYMBOL_REFERENCES_LOCAL (info, h))
2537 || (ELF_ST_VISIBILITY (h->other)
2538 && h->root.type == bfd_link_hash_undefweak))
2540 /* This is actually a static link, or it is a
2541 -Bsymbolic link and the symbol is defined
2542 locally, or the symbol was forced to be local
2543 because of a version file. We must initialize
2544 this entry in the global offset table. Since the
2545 offset must always be a multiple of 2, we use the
2546 least significant bit to record whether we have
2547 initialized it already.
2549 When doing a dynamic link, we create a .rel.got
2550 relocation entry to initialize the value. This
2551 is done in the finish_dynamic_symbol routine. */
2556 bfd_put_64 (output_bfd, relocation,
2557 base_got->contents + off);
2562 && bfd_link_pic (info)
2563 && SYMBOL_REFERENCES_LOCAL (info, h))
2564 /* lgrl rx,sym@GOTENT -> larl rx, sym */
2565 && ((r_type == R_390_GOTENT
2566 && (bfd_get_16 (input_bfd,
2567 contents + rel->r_offset - 2)
2568 & 0xff0f) == 0xc408)
2569 /* lg rx, sym@GOT(r12) -> larl rx, sym */
2570 || (r_type == R_390_GOT20
2571 && (bfd_get_32 (input_bfd,
2572 contents + rel->r_offset - 2)
2573 & 0xff00f000) == 0xe300c000
2574 && bfd_get_8 (input_bfd,
2575 contents + rel->r_offset + 3) == 0x04)))
2578 unsigned short new_insn =
2579 (0xc000 | (bfd_get_8 (input_bfd,
2580 contents + rel->r_offset - 1) & 0xf0));
2581 bfd_put_16 (output_bfd, new_insn,
2582 contents + rel->r_offset - 2);
2583 r_type = R_390_PC32DBL;
2585 howto = elf_howto_table + r_type;
2586 relocation = h->root.u.def.value
2587 + h->root.u.def.section->output_section->vma
2588 + h->root.u.def.section->output_offset;
2593 unresolved_reloc = FALSE;
2597 if (local_got_offsets == NULL)
2600 off = local_got_offsets[r_symndx];
2602 /* The offset must always be a multiple of 8. We use
2603 the least significant bit to record whether we have
2604 already generated the necessary reloc. */
2609 bfd_put_64 (output_bfd, relocation,
2610 htab->elf.sgot->contents + off);
2612 if (bfd_link_pic (info))
2615 Elf_Internal_Rela outrel;
2618 s = htab->elf.srelgot;
2622 outrel.r_offset = (htab->elf.sgot->output_section->vma
2623 + htab->elf.sgot->output_offset
2625 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2626 outrel.r_addend = relocation;
2628 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2629 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2632 local_got_offsets[r_symndx] |= 1;
2636 if (off >= (bfd_vma) -2)
2639 relocation = base_got->output_offset + off;
2641 /* For @GOTENT the relocation is against the offset between
2642 the instruction and the symbols entry in the GOT and not
2643 between the start of the GOT and the symbols entry. We
2644 add the vma of the GOT to get the correct value. */
2645 if ( r_type == R_390_GOTENT
2646 || r_type == R_390_GOTPLTENT)
2647 relocation += base_got->output_section->vma;
2651 case R_390_GOTOFF16:
2652 case R_390_GOTOFF32:
2653 case R_390_GOTOFF64:
2654 /* Relocation is relative to the start of the global offset
2658 && s390_is_ifunc_symbol_p (h)
2660 && !bfd_link_executable (info))
2662 relocation = (htab->elf.iplt->output_section->vma
2663 + htab->elf.iplt->output_offset
2665 - htab->elf.sgot->output_section->vma);
2669 /* Note that sgot->output_offset is not involved in this
2670 calculation. We always want the start of .got. If we
2671 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2672 permitted by the ABI, we might have to change this
2674 relocation -= htab->elf.sgot->output_section->vma;
2678 case R_390_GOTPCDBL:
2679 /* Use global offset table as symbol value. */
2680 relocation = htab->elf.sgot->output_section->vma;
2681 unresolved_reloc = FALSE;
2684 case R_390_PLT12DBL:
2685 case R_390_PLT16DBL:
2686 case R_390_PLT24DBL:
2688 case R_390_PLT32DBL:
2690 /* Relocation is to the entry for this symbol in the
2691 procedure linkage table. */
2693 /* Resolve a PLT32 reloc against a local symbol directly,
2694 without using the procedure linkage table. */
2698 if (h->plt.offset == (bfd_vma) -1
2699 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
2701 /* We didn't make a PLT entry for this symbol. This
2702 happens when statically linking PIC code, or when
2703 using -Bsymbolic. */
2706 if (s390_is_ifunc_symbol_p (h))
2707 relocation = (htab->elf.iplt->output_section->vma
2708 + htab->elf.iplt->output_offset
2711 relocation = (htab->elf.splt->output_section->vma
2712 + htab->elf.splt->output_offset
2714 unresolved_reloc = FALSE;
2717 case R_390_PLTOFF16:
2718 case R_390_PLTOFF32:
2719 case R_390_PLTOFF64:
2720 /* Relocation is to the entry for this symbol in the
2721 procedure linkage table relative to the start of the GOT. */
2723 /* For local symbols or if we didn't make a PLT entry for
2724 this symbol resolve the symbol directly. */
2726 || h->plt.offset == (bfd_vma) -1
2727 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
2729 relocation -= htab->elf.sgot->output_section->vma;
2733 if (s390_is_ifunc_symbol_p (h))
2734 relocation = (htab->elf.iplt->output_section->vma
2735 + htab->elf.iplt->output_offset
2737 - htab->elf.sgot->output_section->vma);
2739 relocation = (htab->elf.splt->output_section->vma
2740 + htab->elf.splt->output_offset
2742 - htab->elf.sgot->output_section->vma);
2743 unresolved_reloc = FALSE;
2753 /* The target of these relocs are instruction operands
2754 residing in read-only sections. We cannot emit a runtime
2757 && s390_is_ifunc_symbol_p (h)
2759 && bfd_link_pic (info))
2761 relocation = (htab->elf.iplt->output_section->vma
2762 + htab->elf.iplt->output_offset
2774 && s390_is_ifunc_symbol_p (h)
2777 if (!bfd_link_pic (info) || !h->non_got_ref)
2779 /* For a non-shared object STT_GNU_IFUNC symbol must
2781 relocation = (htab->elf.iplt->output_section->vma
2782 + htab->elf.iplt->output_offset
2788 /* For shared objects a runtime relocation is needed. */
2790 Elf_Internal_Rela outrel;
2793 /* Need a dynamic relocation to get the real function
2795 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2799 if (outrel.r_offset == (bfd_vma) -1
2800 || outrel.r_offset == (bfd_vma) -2)
2803 outrel.r_offset += (input_section->output_section->vma
2804 + input_section->output_offset);
2806 if (h->dynindx == -1
2808 || bfd_link_executable (info))
2810 /* This symbol is resolved locally. */
2811 outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
2812 outrel.r_addend = (h->root.u.def.value
2813 + h->root.u.def.section->output_section->vma
2814 + h->root.u.def.section->output_offset);
2818 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2819 outrel.r_addend = 0;
2822 sreloc = htab->elf.irelifunc;
2823 elf_append_rela (output_bfd, sreloc, &outrel);
2825 /* If this reloc is against an external symbol, we
2826 do not want to fiddle with the addend. Otherwise,
2827 we need to include the symbol value so that it
2828 becomes an addend for the dynamic reloc. For an
2829 internal symbol, we have updated addend. */
2834 if ((input_section->flags & SEC_ALLOC) == 0)
2837 if ((bfd_link_pic (info)
2839 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2840 || h->root.type != bfd_link_hash_undefweak)
2841 && ((r_type != R_390_PC16
2842 && r_type != R_390_PC12DBL
2843 && r_type != R_390_PC16DBL
2844 && r_type != R_390_PC24DBL
2845 && r_type != R_390_PC32
2846 && r_type != R_390_PC32DBL
2847 && r_type != R_390_PC64)
2848 || !SYMBOL_CALLS_LOCAL (info, h)))
2849 || (ELIMINATE_COPY_RELOCS
2850 && !bfd_link_pic (info)
2856 || h->root.type == bfd_link_hash_undefweak
2857 || h->root.type == bfd_link_hash_undefined)))
2859 Elf_Internal_Rela outrel;
2860 bfd_boolean skip, relocate;
2864 /* When generating a shared object, these relocations
2865 are copied into the output file to be resolved at run
2871 _bfd_elf_section_offset (output_bfd, info, input_section,
2873 if (outrel.r_offset == (bfd_vma) -1)
2875 else if (outrel.r_offset == (bfd_vma) -2)
2876 skip = TRUE, relocate = TRUE;
2878 outrel.r_offset += (input_section->output_section->vma
2879 + input_section->output_offset);
2882 memset (&outrel, 0, sizeof outrel);
2885 && (r_type == R_390_PC16
2886 || r_type == R_390_PC12DBL
2887 || r_type == R_390_PC16DBL
2888 || r_type == R_390_PC24DBL
2889 || r_type == R_390_PC32
2890 || r_type == R_390_PC32DBL
2891 || r_type == R_390_PC64
2892 || !bfd_link_pic (info)
2893 || !SYMBOLIC_BIND (info, h)
2894 || !h->def_regular))
2896 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2897 outrel.r_addend = rel->r_addend;
2901 /* This symbol is local, or marked to become local. */
2902 outrel.r_addend = relocation + rel->r_addend;
2903 if (r_type == R_390_64)
2906 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2912 if (bfd_is_abs_section (sec))
2914 else if (sec == NULL || sec->owner == NULL)
2916 bfd_set_error(bfd_error_bad_value);
2923 osec = sec->output_section;
2924 sindx = elf_section_data (osec)->dynindx;
2928 osec = htab->elf.text_index_section;
2929 sindx = elf_section_data (osec)->dynindx;
2931 BFD_ASSERT (sindx != 0);
2933 /* We are turning this relocation into one
2934 against a section symbol, so subtract out
2935 the output section's address but not the
2936 offset of the input section in the output
2938 outrel.r_addend -= osec->vma;
2940 outrel.r_info = ELF64_R_INFO (sindx, r_type);
2944 sreloc = elf_section_data (input_section)->sreloc;
2948 loc = sreloc->contents;
2949 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2950 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2952 /* If this reloc is against an external symbol, we do
2953 not want to fiddle with the addend. Otherwise, we
2954 need to include the symbol value so that it becomes
2955 an addend for the dynamic reloc. */
2962 /* Relocations for tls literal pool entries. */
2963 case R_390_TLS_IE64:
2964 if (bfd_link_pic (info))
2966 Elf_Internal_Rela outrel;
2970 outrel.r_offset = rel->r_offset
2971 + input_section->output_section->vma
2972 + input_section->output_offset;
2973 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2974 sreloc = elf_section_data (input_section)->sreloc;
2977 loc = sreloc->contents;
2978 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2979 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2983 case R_390_TLS_GD64:
2984 case R_390_TLS_GOTIE64:
2985 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2986 tls_type = GOT_UNKNOWN;
2987 if (h == NULL && local_got_offsets)
2988 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2991 tls_type = elf_s390_hash_entry(h)->tls_type;
2992 if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2993 r_type = R_390_TLS_LE64;
2995 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2996 r_type = R_390_TLS_IE64;
2998 if (r_type == R_390_TLS_LE64)
3000 /* This relocation gets optimized away by the local exec
3001 access optimization. */
3002 BFD_ASSERT (! unresolved_reloc);
3003 bfd_put_64 (output_bfd, -tpoff (info, relocation),
3004 contents + rel->r_offset);
3008 if (htab->elf.sgot == NULL)
3012 off = h->got.offset;
3015 if (local_got_offsets == NULL)
3018 off = local_got_offsets[r_symndx];
3027 Elf_Internal_Rela outrel;
3031 if (htab->elf.srelgot == NULL)
3034 outrel.r_offset = (htab->elf.sgot->output_section->vma
3035 + htab->elf.sgot->output_offset + off);
3037 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3038 if (r_type == R_390_TLS_GD64)
3039 dr_type = R_390_TLS_DTPMOD;
3041 dr_type = R_390_TLS_TPOFF;
3042 if (dr_type == R_390_TLS_TPOFF && indx == 0)
3043 outrel.r_addend = relocation - dtpoff_base (info);
3045 outrel.r_addend = 0;
3046 outrel.r_info = ELF64_R_INFO (indx, dr_type);
3047 loc = htab->elf.srelgot->contents;
3048 loc += htab->elf.srelgot->reloc_count++
3049 * sizeof (Elf64_External_Rela);
3050 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3052 if (r_type == R_390_TLS_GD64)
3056 BFD_ASSERT (! unresolved_reloc);
3057 bfd_put_64 (output_bfd,
3058 relocation - dtpoff_base (info),
3059 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3063 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
3064 outrel.r_offset += GOT_ENTRY_SIZE;
3065 outrel.r_addend = 0;
3066 htab->elf.srelgot->reloc_count++;
3067 loc += sizeof (Elf64_External_Rela);
3068 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3075 local_got_offsets[r_symndx] |= 1;
3078 if (off >= (bfd_vma) -2)
3080 if (r_type == ELF64_R_TYPE (rel->r_info))
3082 relocation = htab->elf.sgot->output_offset + off;
3083 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
3084 relocation += htab->elf.sgot->output_section->vma;
3085 unresolved_reloc = FALSE;
3089 bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
3090 contents + rel->r_offset);
3095 case R_390_TLS_GOTIE12:
3096 case R_390_TLS_GOTIE20:
3097 case R_390_TLS_IEENT:
3100 if (local_got_offsets == NULL)
3102 off = local_got_offsets[r_symndx];
3103 if (bfd_link_pic (info))
3104 goto emit_tls_relocs;
3108 off = h->got.offset;
3109 tls_type = elf_s390_hash_entry(h)->tls_type;
3110 if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE)
3111 goto emit_tls_relocs;
3114 if (htab->elf.sgot == NULL)
3117 BFD_ASSERT (! unresolved_reloc);
3118 bfd_put_64 (output_bfd, -tpoff (info, relocation),
3119 htab->elf.sgot->contents + off);
3120 relocation = htab->elf.sgot->output_offset + off;
3121 if (r_type == R_390_TLS_IEENT)
3122 relocation += htab->elf.sgot->output_section->vma;
3123 unresolved_reloc = FALSE;
3126 case R_390_TLS_LDM64:
3127 if (! bfd_link_pic (info))
3128 /* The literal pool entry this relocation refers to gets ignored
3129 by the optimized code of the local exec model. Do nothing
3130 and the value will turn out zero. */
3133 if (htab->elf.sgot == NULL)
3136 off = htab->tls_ldm_got.offset;
3141 Elf_Internal_Rela outrel;
3144 if (htab->elf.srelgot == NULL)
3147 outrel.r_offset = (htab->elf.sgot->output_section->vma
3148 + htab->elf.sgot->output_offset + off);
3150 bfd_put_64 (output_bfd, 0,
3151 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3152 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
3153 outrel.r_addend = 0;
3154 loc = htab->elf.srelgot->contents;
3155 loc += htab->elf.srelgot->reloc_count++
3156 * sizeof (Elf64_External_Rela);
3157 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3158 htab->tls_ldm_got.offset |= 1;
3160 relocation = htab->elf.sgot->output_offset + off;
3161 unresolved_reloc = FALSE;
3164 case R_390_TLS_LE64:
3165 if (bfd_link_dll (info))
3167 /* Linking a shared library with non-fpic code requires
3168 a R_390_TLS_TPOFF relocation. */
3169 Elf_Internal_Rela outrel;
3174 outrel.r_offset = rel->r_offset
3175 + input_section->output_section->vma
3176 + input_section->output_offset;
3177 if (h != NULL && h->dynindx != -1)
3181 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
3183 outrel.r_addend = relocation - dtpoff_base (info);
3185 outrel.r_addend = 0;
3186 sreloc = elf_section_data (input_section)->sreloc;
3189 loc = sreloc->contents;
3190 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
3191 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3195 BFD_ASSERT (! unresolved_reloc);
3196 bfd_put_64 (output_bfd, -tpoff (info, relocation),
3197 contents + rel->r_offset);
3201 case R_390_TLS_LDO64:
3202 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
3203 relocation -= dtpoff_base (info);
3205 /* When converting LDO to LE, we must negate. */
3206 relocation = -tpoff (info, relocation);
3209 /* Relocations for tls instructions. */
3210 case R_390_TLS_LOAD:
3211 case R_390_TLS_GDCALL:
3212 case R_390_TLS_LDCALL:
3213 tls_type = GOT_UNKNOWN;
3214 if (h == NULL && local_got_offsets)
3215 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3217 tls_type = elf_s390_hash_entry(h)->tls_type;
3219 if (tls_type == GOT_TLS_GD)
3222 if (r_type == R_390_TLS_LOAD)
3224 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3226 /* IE->LE transition. Four valid cases:
3227 lg %rx,(0,%ry) -> sllg %rx,%ry,0
3228 lg %rx,(%ry,0) -> sllg %rx,%ry,0
3229 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
3230 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
3231 unsigned int insn0, insn1, ry;
3233 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3234 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3235 if (insn1 != 0x0004)
3236 invalid_tls_insn (input_bfd, input_section, rel);
3238 if ((insn0 & 0xff00f000) == 0xe3000000)
3239 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
3240 ry = (insn0 & 0x000f0000);
3241 else if ((insn0 & 0xff0f0000) == 0xe3000000)
3242 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
3243 ry = (insn0 & 0x0000f000) << 4;
3244 else if ((insn0 & 0xff00f000) == 0xe300c000)
3245 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
3246 ry = (insn0 & 0x000f0000);
3247 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
3248 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
3249 ry = (insn0 & 0x0000f000) << 4;
3251 invalid_tls_insn (input_bfd, input_section, rel);
3252 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
3254 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3255 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3258 else if (r_type == R_390_TLS_GDCALL)
3260 unsigned int insn0, insn1;
3262 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3263 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3264 if ((insn0 & 0xffff0000) != 0xc0e50000)
3265 invalid_tls_insn (input_bfd, input_section, rel);
3266 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3268 /* GD->LE transition.
3269 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3275 /* GD->IE transition.
3276 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
3280 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3281 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3283 else if (r_type == R_390_TLS_LDCALL)
3285 if (!bfd_link_pic (info))
3287 unsigned int insn0, insn1;
3289 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3290 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3291 if ((insn0 & 0xffff0000) != 0xc0e50000)
3292 invalid_tls_insn (input_bfd, input_section, rel);
3293 /* LD->LE transition.
3294 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3297 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3298 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3307 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3308 because such sections are not SEC_ALLOC and thus ld.so will
3309 not process them. */
3310 if (unresolved_reloc
3311 && !((input_section->flags & SEC_DEBUGGING) != 0
3313 && _bfd_elf_section_offset (output_bfd, info, input_section,
3314 rel->r_offset) != (bfd_vma) -1)
3316 /* xgettext:c-format */
3317 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3320 (long) rel->r_offset,
3322 h->root.root.string);
3326 /* When applying a 24 bit reloc we need to start one byte
3327 earlier. Otherwise the 32 bit get/put bfd operations might
3328 access a byte after the actual section. */
3329 if (r_type == R_390_PC24DBL
3330 || r_type == R_390_PLT24DBL)
3333 if (r_type == R_390_20
3334 || r_type == R_390_GOT20
3335 || r_type == R_390_GOTPLT20
3336 || r_type == R_390_TLS_GOTIE20)
3338 relocation += rel->r_addend;
3339 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3340 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3341 contents, rel->r_offset,
3345 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3346 contents, rel->r_offset,
3347 relocation, rel->r_addend);
3349 if (r != bfd_reloc_ok)
3354 name = h->root.root.string;
3357 name = bfd_elf_string_from_elf_section (input_bfd,
3358 symtab_hdr->sh_link,
3363 name = bfd_section_name (input_bfd, sec);
3366 if (r == bfd_reloc_overflow)
3367 (*info->callbacks->reloc_overflow)
3368 (info, (h ? &h->root : NULL), name, howto->name,
3369 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3373 /* xgettext:c-format */
3374 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3375 input_bfd, input_section,
3376 (long) rel->r_offset, name, (int) r);
3385 /* Generate the PLT slots together with the dynamic relocations needed
3386 for IFUNC symbols. */
3389 elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3390 struct bfd_link_info *info,
3391 struct elf_link_hash_entry *h,
3392 struct elf_s390_link_hash_table *htab,
3394 bfd_vma resolver_address)
3398 Elf_Internal_Rela rela;
3400 asection *plt, *gotplt, *relplt;
3402 if (htab->elf.iplt == NULL
3403 || htab->elf.igotplt == NULL
3404 || htab->elf.irelplt == NULL)
3407 /* Index of the PLT slot within iplt section. */
3408 plt_index = plt_offset / PLT_ENTRY_SIZE;
3409 plt = htab->elf.iplt;
3410 /* Offset into the igot.plt section. */
3411 got_offset = plt_index * GOT_ENTRY_SIZE;
3412 gotplt = htab->elf.igotplt;
3413 relplt = htab->elf.irelplt;
3415 /* Fill in the blueprint of a PLT. */
3416 memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
3419 /* Fixup the relative address to the GOT entry */
3420 bfd_put_32 (output_bfd,
3421 (gotplt->output_section->vma +
3422 gotplt->output_offset + got_offset
3423 - (plt->output_section->vma +
3424 plt->output_offset +
3426 plt->contents + plt_offset + 2);
3427 /* Fixup the relative branch to PLT 0 */
3428 bfd_put_32 (output_bfd, - (plt->output_offset +
3429 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3430 plt->contents + plt_offset + 24);
3431 /* Fixup offset into .rela.plt section. */
3432 bfd_put_32 (output_bfd, relplt->output_offset +
3433 plt_index * sizeof (Elf64_External_Rela),
3434 plt->contents + plt_offset + 28);
3436 /* Fill in the entry in the global offset table.
3437 Points to instruction after GOT offset. */
3438 bfd_put_64 (output_bfd,
3439 (plt->output_section->vma
3440 + plt->output_offset
3443 gotplt->contents + got_offset);
3445 /* Fill in the entry in the .rela.plt section. */
3446 rela.r_offset = (gotplt->output_section->vma
3447 + gotplt->output_offset
3452 || ((bfd_link_executable (info)
3453 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3456 /* The symbol can be locally resolved. */
3457 rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
3458 rela.r_addend = resolver_address;
3462 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3466 loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
3467 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3471 /* Finish up dynamic symbol handling. We set the contents of various
3472 dynamic sections here. */
3475 elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3476 struct bfd_link_info *info,
3477 struct elf_link_hash_entry *h,
3478 Elf_Internal_Sym *sym)
3480 struct elf_s390_link_hash_table *htab;
3481 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
3483 htab = elf_s390_hash_table (info);
3487 if (h->plt.offset != (bfd_vma) -1)
3491 Elf_Internal_Rela rela;
3494 /* This symbol has an entry in the procedure linkage table. Set
3496 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
3498 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3499 htab, h->plt.offset,
3500 eh->ifunc_resolver_address +
3501 eh->ifunc_resolver_section->output_offset +
3502 eh->ifunc_resolver_section->output_section->vma);
3504 /* Do not return yet. Handling of explicit GOT slots of
3505 IFUNC symbols is below. */
3509 if (h->dynindx == -1
3510 || htab->elf.splt == NULL
3511 || htab->elf.sgotplt == NULL
3512 || htab->elf.srelplt == NULL)
3516 Current offset - size first entry / entry size. */
3517 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3519 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
3521 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3523 /* Fill in the blueprint of a PLT. */
3524 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
3527 /* Fixup the relative address to the GOT entry */
3528 bfd_put_32 (output_bfd,
3529 (htab->elf.sgotplt->output_section->vma +
3530 htab->elf.sgotplt->output_offset + got_offset
3531 - (htab->elf.splt->output_section->vma +
3532 htab->elf.splt->output_offset +
3534 htab->elf.splt->contents + h->plt.offset + 2);
3535 /* Fixup the relative branch to PLT 0 */
3536 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3537 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3538 htab->elf.splt->contents + h->plt.offset + 24);
3539 /* Fixup offset into .rela.plt section. */
3540 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3541 htab->elf.splt->contents + h->plt.offset + 28);
3543 /* Fill in the entry in the global offset table.
3544 Points to instruction after GOT offset. */
3545 bfd_put_64 (output_bfd,
3546 (htab->elf.splt->output_section->vma
3547 + htab->elf.splt->output_offset
3550 htab->elf.sgotplt->contents + got_offset);
3552 /* Fill in the entry in the .rela.plt section. */
3553 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3554 + htab->elf.sgotplt->output_offset
3556 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3558 loc = htab->elf.srelplt->contents + plt_index *
3559 sizeof (Elf64_External_Rela);
3560 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3562 if (!h->def_regular)
3564 /* Mark the symbol as undefined, rather than as defined in
3565 the .plt section. Leave the value alone. This is a clue
3566 for the dynamic linker, to make function pointer
3567 comparisons work between an application and shared
3569 sym->st_shndx = SHN_UNDEF;
3574 if (h->got.offset != (bfd_vma) -1
3575 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3576 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3577 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3579 Elf_Internal_Rela rela;
3582 /* This symbol has an entry in the global offset table. Set it
3584 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
3587 rela.r_offset = (htab->elf.sgot->output_section->vma
3588 + htab->elf.sgot->output_offset
3589 + (h->got.offset &~ (bfd_vma) 1));
3591 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3593 if (bfd_link_pic (info))
3595 /* An explicit GOT slot usage needs GLOB_DAT. If the
3596 symbol references local the implicit got.iplt slot
3597 will be used and the IRELATIVE reloc has been created
3603 /* For non-shared objects explicit GOT slots must be
3604 filled with the PLT slot address for pointer
3605 equality reasons. */
3606 bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
3607 + htab->elf.iplt->output_offset
3609 htab->elf.sgot->contents + h->got.offset);
3613 else if (bfd_link_pic (info)
3614 && SYMBOL_REFERENCES_LOCAL (info, h))
3616 /* If this is a static link, or it is a -Bsymbolic link and
3617 the symbol is defined locally or was forced to be local
3618 because of a version file, we just want to emit a
3619 RELATIVE reloc. The entry in the global offset table
3620 will already have been initialized in the
3621 relocate_section function. */
3622 if (!h->def_regular)
3624 BFD_ASSERT((h->got.offset & 1) != 0);
3625 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3626 rela.r_addend = (h->root.u.def.value
3627 + h->root.u.def.section->output_section->vma
3628 + h->root.u.def.section->output_offset);
3632 BFD_ASSERT((h->got.offset & 1) == 0);
3634 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
3635 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
3639 loc = htab->elf.srelgot->contents;
3640 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
3641 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3646 Elf_Internal_Rela rela;
3649 /* This symbols needs a copy reloc. Set it up. */
3651 if (h->dynindx == -1
3652 || (h->root.type != bfd_link_hash_defined
3653 && h->root.type != bfd_link_hash_defweak)
3654 || htab->srelbss == NULL)
3657 rela.r_offset = (h->root.u.def.value
3658 + h->root.u.def.section->output_section->vma
3659 + h->root.u.def.section->output_offset);
3660 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3662 loc = htab->srelbss->contents;
3663 loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
3664 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3667 /* Mark some specially defined symbols as absolute. */
3668 if (h == htab->elf.hdynamic
3669 || h == htab->elf.hgot
3670 || h == htab->elf.hplt)
3671 sym->st_shndx = SHN_ABS;
3676 /* Used to decide how to sort relocs in an optimal manner for the
3677 dynamic linker, before writing them out. */
3679 static enum elf_reloc_type_class
3680 elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3681 const asection *rel_sec ATTRIBUTE_UNUSED,
3682 const Elf_Internal_Rela *rela)
3684 bfd *abfd = info->output_bfd;
3685 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3686 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3687 unsigned long r_symndx = ELF64_R_SYM (rela->r_info);
3688 Elf_Internal_Sym sym;
3690 if (htab->elf.dynsym == NULL
3691 || !bed->s->swap_symbol_in (abfd,
3692 (htab->elf.dynsym->contents
3693 + r_symndx * bed->s->sizeof_sym),
3697 /* Check relocation against STT_GNU_IFUNC symbol. */
3698 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3699 return reloc_class_ifunc;
3701 switch ((int) ELF64_R_TYPE (rela->r_info))
3703 case R_390_RELATIVE:
3704 return reloc_class_relative;
3705 case R_390_JMP_SLOT:
3706 return reloc_class_plt;
3708 return reloc_class_copy;
3710 return reloc_class_normal;
3714 /* Finish up the dynamic sections. */
3717 elf_s390_finish_dynamic_sections (bfd *output_bfd,
3718 struct bfd_link_info *info)
3720 struct elf_s390_link_hash_table *htab;
3726 htab = elf_s390_hash_table (info);
3730 dynobj = htab->elf.dynobj;
3731 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3733 if (htab->elf.dynamic_sections_created)
3735 Elf64_External_Dyn *dyncon, *dynconend;
3737 if (sdyn == NULL || htab->elf.sgot == NULL)
3740 dyncon = (Elf64_External_Dyn *) sdyn->contents;
3741 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
3742 for (; dyncon < dynconend; dyncon++)
3744 Elf_Internal_Dyn dyn;
3747 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
3755 s = htab->elf.sgotplt;
3756 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3760 s = htab->elf.srelplt;
3761 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3765 dyn.d_un.d_val = htab->elf.srelplt->size + htab->elf.irelplt->size;
3769 /* The procedure linkage table relocs (DT_JMPREL) should
3770 not be included in the overall relocs (DT_RELA).
3771 Therefore, we override the DT_RELASZ entry here to
3772 make it not include the JMPREL relocs. Since the
3773 linker script arranges for .rela.plt to follow all
3774 other relocation sections, we don't have to worry
3775 about changing the DT_RELA entry. */
3776 dyn.d_un.d_val -= htab->elf.srelplt->size + htab->elf.irelplt->size;
3780 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
3783 /* Fill in the special first entry in the procedure linkage table. */
3784 if (htab->elf.splt && htab->elf.splt->size > 0)
3786 /* fill in blueprint for plt 0 entry */
3787 memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
3788 PLT_FIRST_ENTRY_SIZE);
3789 /* Fixup relative address to start of GOT */
3790 bfd_put_32 (output_bfd,
3791 (htab->elf.sgotplt->output_section->vma
3792 + htab->elf.sgotplt->output_offset
3793 - htab->elf.splt->output_section->vma
3794 - htab->elf.splt->output_offset - 6)/2,
3795 htab->elf.splt->contents + 8);
3797 if (elf_section_data (htab->elf.splt->output_section) != NULL)
3798 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
3802 if (htab->elf.sgotplt)
3804 /* Fill in the first three entries in the global offset table. */
3805 if (htab->elf.sgotplt->size > 0)
3807 bfd_put_64 (output_bfd,
3808 (sdyn == NULL ? (bfd_vma) 0
3809 : sdyn->output_section->vma + sdyn->output_offset),
3810 htab->elf.sgotplt->contents);
3811 /* One entry for shared object struct ptr. */
3812 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
3813 /* One entry for _dl_runtime_resolve. */
3814 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 16);
3817 elf_section_data (htab->elf.sgot->output_section)
3818 ->this_hdr.sh_entsize = 8;
3821 /* Finish dynamic symbol for local IFUNC symbols. */
3822 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
3824 struct plt_entry *local_plt;
3825 Elf_Internal_Sym *isym;
3826 Elf_Internal_Shdr *symtab_hdr;
3828 symtab_hdr = &elf_symtab_hdr (ibfd);
3830 local_plt = elf_s390_local_plt (ibfd);
3831 if (local_plt != NULL)
3832 for (i = 0; i < symtab_hdr->sh_info; i++)
3834 if (local_plt[i].plt.offset != (bfd_vma) -1)
3836 asection *sec = local_plt[i].sec;
3837 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3841 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3842 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3843 local_plt[i].plt.offset,
3845 + sec->output_section->vma
3846 + sec->output_offset);
3855 /* Support for core dump NOTE sections. */
3858 elf_s390_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3863 switch (note->descsz)
3868 case 336: /* sizeof(struct elf_prstatus) on s390x */
3870 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
3873 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
3881 /* Make a ".reg/999" section. */
3882 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3883 size, note->descpos + offset);
3887 elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3889 switch (note->descsz)
3894 case 136: /* sizeof(struct elf_prpsinfo) on s390x */
3895 elf_tdata (abfd)->core->pid
3896 = bfd_get_32 (abfd, note->descdata + 24);
3897 elf_tdata (abfd)->core->program
3898 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
3899 elf_tdata (abfd)->core->command
3900 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
3903 /* Note that for some reason, a spurious space is tacked
3904 onto the end of the args in some (at least one anyway)
3905 implementations, so strip it off if it exists. */
3908 char *command = elf_tdata (abfd)->core->command;
3909 int n = strlen (command);
3911 if (0 < n && command[n - 1] == ' ')
3912 command[n - 1] = '\0';
3919 elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
3931 char data[136] = { 0 };
3932 const char *fname, *psargs;
3934 va_start (ap, note_type);
3935 fname = va_arg (ap, const char *);
3936 psargs = va_arg (ap, const char *);
3939 strncpy (data + 40, fname, 16);
3940 strncpy (data + 56, psargs, 80);
3941 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3942 &data, sizeof (data));
3947 char data[336] = { 0 };
3952 va_start (ap, note_type);
3953 pid = va_arg (ap, long);
3954 cursig = va_arg (ap, int);
3955 gregs = va_arg (ap, const void *);
3958 bfd_put_16 (abfd, cursig, data + 12);
3959 bfd_put_32 (abfd, pid, data + 32);
3960 memcpy (data + 112, gregs, 216);
3961 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3962 &data, sizeof (data));
3968 /* Return address for Ith PLT stub in section PLT, for relocation REL
3969 or (bfd_vma) -1 if it should not be included. */
3972 elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3973 const arelent *rel ATTRIBUTE_UNUSED)
3975 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3978 /* Merge backend specific data from an object file to the output
3979 object file when linking. */
3982 elf64_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
3984 if (!is_s390_elf (ibfd) || !is_s390_elf (info->output_bfd))
3987 return elf_s390_merge_obj_attributes (ibfd, info);
3990 /* Why was the hash table entry size definition changed from
3991 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3992 this is the only reason for the s390_elf64_size_info structure. */
3994 const struct elf_size_info s390_elf64_size_info =
3996 sizeof (Elf64_External_Ehdr),
3997 sizeof (Elf64_External_Phdr),
3998 sizeof (Elf64_External_Shdr),
3999 sizeof (Elf64_External_Rel),
4000 sizeof (Elf64_External_Rela),
4001 sizeof (Elf64_External_Sym),
4002 sizeof (Elf64_External_Dyn),
4003 sizeof (Elf_External_Note),
4004 8, /* hash-table entry size. */
4005 1, /* internal relocations per external relocations. */
4006 64, /* arch_size. */
4007 3, /* log_file_align. */
4008 ELFCLASS64, EV_CURRENT,
4009 bfd_elf64_write_out_phdrs,
4010 bfd_elf64_write_shdrs_and_ehdr,
4011 bfd_elf64_checksum_contents,
4012 bfd_elf64_write_relocs,
4013 bfd_elf64_swap_symbol_in,
4014 bfd_elf64_swap_symbol_out,
4015 bfd_elf64_slurp_reloc_table,
4016 bfd_elf64_slurp_symbol_table,
4017 bfd_elf64_swap_dyn_in,
4018 bfd_elf64_swap_dyn_out,
4019 bfd_elf64_swap_reloc_in,
4020 bfd_elf64_swap_reloc_out,
4021 bfd_elf64_swap_reloca_in,
4022 bfd_elf64_swap_reloca_out
4025 #define TARGET_BIG_SYM s390_elf64_vec
4026 #define TARGET_BIG_NAME "elf64-s390"
4027 #define ELF_ARCH bfd_arch_s390
4028 #define ELF_TARGET_ID S390_ELF_DATA
4029 #define ELF_MACHINE_CODE EM_S390
4030 #define ELF_MACHINE_ALT1 EM_S390_OLD
4031 #define ELF_MAXPAGESIZE 0x1000
4033 #define elf_backend_size_info s390_elf64_size_info
4035 #define elf_backend_can_gc_sections 1
4036 #define elf_backend_can_refcount 1
4037 #define elf_backend_want_got_plt 1
4038 #define elf_backend_plt_readonly 1
4039 #define elf_backend_want_plt_sym 0
4040 #define elf_backend_got_header_size 24
4041 #define elf_backend_rela_normal 1
4043 #define elf_info_to_howto elf_s390_info_to_howto
4045 #define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
4046 #define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
4047 #define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
4048 #define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
4049 #define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
4051 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
4052 #define elf_backend_check_relocs elf_s390_check_relocs
4053 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
4054 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
4055 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4056 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
4057 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
4058 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
4059 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
4060 #define elf_backend_relocate_section elf_s390_relocate_section
4061 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
4062 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4063 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
4064 #define elf_backend_grok_psinfo elf_s390_grok_psinfo
4065 #define elf_backend_write_core_note elf_s390_write_core_note
4066 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
4067 #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
4068 #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
4070 #define bfd_elf64_mkobject elf_s390_mkobject
4071 #define elf_backend_object_p elf_s390_object_p
4073 #include "elf64-target.h"