1 /* IBM S/390-specific support for 64-bit ELF
2 Copyright (C) 2000-2015 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
29 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
30 from smaller values. Start with zero, widen, *then* decrement. */
31 #define MINUS_ONE (((bfd_vma)0) - 1)
33 static bfd_reloc_status_type
34 s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
35 asection *, bfd *, char **);
36 static bfd_reloc_status_type
37 s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
38 asection *, bfd *, char **);
40 /* The relocation "howto" table. */
41 static reloc_howto_type elf_howto_table[] =
43 HOWTO (R_390_NONE, /* type */
45 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
47 FALSE, /* pc_relative */
49 complain_overflow_dont, /* complain_on_overflow */
50 bfd_elf_generic_reloc, /* special_function */
51 "R_390_NONE", /* name */
52 FALSE, /* partial_inplace */
55 FALSE), /* pcrel_offset */
57 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
58 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
59 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
60 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
61 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
62 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
63 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
64 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
65 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
66 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
67 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
68 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
69 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
70 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
71 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
72 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
73 HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
74 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE),
75 HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
76 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE),
77 HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
78 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE),
79 HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
80 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE),
81 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
82 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE),
83 HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
84 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE),
85 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
86 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
87 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
88 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
89 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
90 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
91 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
92 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
93 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
94 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
95 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
96 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
97 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
98 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
99 HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
100 bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE),
101 HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
102 bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
103 HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
104 bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
105 HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
106 bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
107 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
108 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE),
109 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
110 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
111 HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
112 bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE),
113 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
114 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
115 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
116 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
117 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
118 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
119 HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
120 bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE),
121 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
122 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE),
123 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
124 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
125 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
126 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
127 HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
128 bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE),
129 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
130 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
131 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
132 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
133 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
134 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
135 EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */
136 HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
137 bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
138 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
139 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
140 EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */
141 HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
142 bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
143 EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */
144 HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
145 bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
146 EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */
147 HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
148 bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
149 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
150 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
151 EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */
152 HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
153 bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
154 EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */
155 HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
156 bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
157 HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
158 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
159 HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
160 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
161 HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
162 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
163 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
164 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
165 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
166 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
167 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
168 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
169 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
170 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
171 HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
172 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE),
173 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
174 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
175 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
176 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
177 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
178 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
179 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
180 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
183 /* GNU extension to record C++ vtable hierarchy. */
184 static reloc_howto_type elf64_s390_vtinherit_howto =
185 HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
186 static reloc_howto_type elf64_s390_vtentry_howto =
187 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);
189 static reloc_howto_type *
190 elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
191 bfd_reloc_code_real_type code)
196 return &elf_howto_table[(int) R_390_NONE];
198 return &elf_howto_table[(int) R_390_8];
199 case BFD_RELOC_390_12:
200 return &elf_howto_table[(int) R_390_12];
202 return &elf_howto_table[(int) R_390_16];
204 return &elf_howto_table[(int) R_390_32];
206 return &elf_howto_table[(int) R_390_32];
207 case BFD_RELOC_32_PCREL:
208 return &elf_howto_table[(int) R_390_PC32];
209 case BFD_RELOC_390_GOT12:
210 return &elf_howto_table[(int) R_390_GOT12];
211 case BFD_RELOC_32_GOT_PCREL:
212 return &elf_howto_table[(int) R_390_GOT32];
213 case BFD_RELOC_390_PLT32:
214 return &elf_howto_table[(int) R_390_PLT32];
215 case BFD_RELOC_390_COPY:
216 return &elf_howto_table[(int) R_390_COPY];
217 case BFD_RELOC_390_GLOB_DAT:
218 return &elf_howto_table[(int) R_390_GLOB_DAT];
219 case BFD_RELOC_390_JMP_SLOT:
220 return &elf_howto_table[(int) R_390_JMP_SLOT];
221 case BFD_RELOC_390_RELATIVE:
222 return &elf_howto_table[(int) R_390_RELATIVE];
223 case BFD_RELOC_32_GOTOFF:
224 return &elf_howto_table[(int) R_390_GOTOFF32];
225 case BFD_RELOC_390_GOTPC:
226 return &elf_howto_table[(int) R_390_GOTPC];
227 case BFD_RELOC_390_GOT16:
228 return &elf_howto_table[(int) R_390_GOT16];
229 case BFD_RELOC_16_PCREL:
230 return &elf_howto_table[(int) R_390_PC16];
231 case BFD_RELOC_390_PC12DBL:
232 return &elf_howto_table[(int) R_390_PC12DBL];
233 case BFD_RELOC_390_PLT12DBL:
234 return &elf_howto_table[(int) R_390_PLT12DBL];
235 case BFD_RELOC_390_PC16DBL:
236 return &elf_howto_table[(int) R_390_PC16DBL];
237 case BFD_RELOC_390_PLT16DBL:
238 return &elf_howto_table[(int) R_390_PLT16DBL];
239 case BFD_RELOC_390_PC24DBL:
240 return &elf_howto_table[(int) R_390_PC24DBL];
241 case BFD_RELOC_390_PLT24DBL:
242 return &elf_howto_table[(int) R_390_PLT24DBL];
243 case BFD_RELOC_390_PC32DBL:
244 return &elf_howto_table[(int) R_390_PC32DBL];
245 case BFD_RELOC_390_PLT32DBL:
246 return &elf_howto_table[(int) R_390_PLT32DBL];
247 case BFD_RELOC_390_GOTPCDBL:
248 return &elf_howto_table[(int) R_390_GOTPCDBL];
250 return &elf_howto_table[(int) R_390_64];
251 case BFD_RELOC_64_PCREL:
252 return &elf_howto_table[(int) R_390_PC64];
253 case BFD_RELOC_390_GOT64:
254 return &elf_howto_table[(int) R_390_GOT64];
255 case BFD_RELOC_390_PLT64:
256 return &elf_howto_table[(int) R_390_PLT64];
257 case BFD_RELOC_390_GOTENT:
258 return &elf_howto_table[(int) R_390_GOTENT];
259 case BFD_RELOC_16_GOTOFF:
260 return &elf_howto_table[(int) R_390_GOTOFF16];
261 case BFD_RELOC_390_GOTOFF64:
262 return &elf_howto_table[(int) R_390_GOTOFF64];
263 case BFD_RELOC_390_GOTPLT12:
264 return &elf_howto_table[(int) R_390_GOTPLT12];
265 case BFD_RELOC_390_GOTPLT16:
266 return &elf_howto_table[(int) R_390_GOTPLT16];
267 case BFD_RELOC_390_GOTPLT32:
268 return &elf_howto_table[(int) R_390_GOTPLT32];
269 case BFD_RELOC_390_GOTPLT64:
270 return &elf_howto_table[(int) R_390_GOTPLT64];
271 case BFD_RELOC_390_GOTPLTENT:
272 return &elf_howto_table[(int) R_390_GOTPLTENT];
273 case BFD_RELOC_390_PLTOFF16:
274 return &elf_howto_table[(int) R_390_PLTOFF16];
275 case BFD_RELOC_390_PLTOFF32:
276 return &elf_howto_table[(int) R_390_PLTOFF32];
277 case BFD_RELOC_390_PLTOFF64:
278 return &elf_howto_table[(int) R_390_PLTOFF64];
279 case BFD_RELOC_390_TLS_LOAD:
280 return &elf_howto_table[(int) R_390_TLS_LOAD];
281 case BFD_RELOC_390_TLS_GDCALL:
282 return &elf_howto_table[(int) R_390_TLS_GDCALL];
283 case BFD_RELOC_390_TLS_LDCALL:
284 return &elf_howto_table[(int) R_390_TLS_LDCALL];
285 case BFD_RELOC_390_TLS_GD64:
286 return &elf_howto_table[(int) R_390_TLS_GD64];
287 case BFD_RELOC_390_TLS_GOTIE12:
288 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
289 case BFD_RELOC_390_TLS_GOTIE64:
290 return &elf_howto_table[(int) R_390_TLS_GOTIE64];
291 case BFD_RELOC_390_TLS_LDM64:
292 return &elf_howto_table[(int) R_390_TLS_LDM64];
293 case BFD_RELOC_390_TLS_IE64:
294 return &elf_howto_table[(int) R_390_TLS_IE64];
295 case BFD_RELOC_390_TLS_IEENT:
296 return &elf_howto_table[(int) R_390_TLS_IEENT];
297 case BFD_RELOC_390_TLS_LE64:
298 return &elf_howto_table[(int) R_390_TLS_LE64];
299 case BFD_RELOC_390_TLS_LDO64:
300 return &elf_howto_table[(int) R_390_TLS_LDO64];
301 case BFD_RELOC_390_TLS_DTPMOD:
302 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
303 case BFD_RELOC_390_TLS_DTPOFF:
304 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
305 case BFD_RELOC_390_TLS_TPOFF:
306 return &elf_howto_table[(int) R_390_TLS_TPOFF];
307 case BFD_RELOC_390_20:
308 return &elf_howto_table[(int) R_390_20];
309 case BFD_RELOC_390_GOT20:
310 return &elf_howto_table[(int) R_390_GOT20];
311 case BFD_RELOC_390_GOTPLT20:
312 return &elf_howto_table[(int) R_390_GOTPLT20];
313 case BFD_RELOC_390_TLS_GOTIE20:
314 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
315 case BFD_RELOC_390_IRELATIVE:
316 return &elf_howto_table[(int) R_390_IRELATIVE];
317 case BFD_RELOC_VTABLE_INHERIT:
318 return &elf64_s390_vtinherit_howto;
319 case BFD_RELOC_VTABLE_ENTRY:
320 return &elf64_s390_vtentry_howto;
327 static reloc_howto_type *
328 elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
334 i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
336 if (elf_howto_table[i].name != NULL
337 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
338 return &elf_howto_table[i];
340 if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
341 return &elf64_s390_vtinherit_howto;
342 if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
343 return &elf64_s390_vtentry_howto;
348 /* We need to use ELF64_R_TYPE so we have our own copy of this function,
349 and elf64-s390.c has its own copy. */
352 elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
354 Elf_Internal_Rela *dst)
356 unsigned int r_type = ELF64_R_TYPE(dst->r_info);
359 case R_390_GNU_VTINHERIT:
360 cache_ptr->howto = &elf64_s390_vtinherit_howto;
363 case R_390_GNU_VTENTRY:
364 cache_ptr->howto = &elf64_s390_vtentry_howto;
368 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
370 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
374 cache_ptr->howto = &elf_howto_table[r_type];
378 /* A relocation function which doesn't do anything. */
379 static bfd_reloc_status_type
380 s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
381 arelent *reloc_entry,
382 asymbol *symbol ATTRIBUTE_UNUSED,
383 void * data ATTRIBUTE_UNUSED,
384 asection *input_section,
386 char **error_message ATTRIBUTE_UNUSED)
389 reloc_entry->address += input_section->output_offset;
393 /* Handle the large displacement relocs. */
394 static bfd_reloc_status_type
395 s390_elf_ldisp_reloc (bfd *abfd,
396 arelent *reloc_entry,
399 asection *input_section,
401 char **error_message ATTRIBUTE_UNUSED)
403 reloc_howto_type *howto = reloc_entry->howto;
407 if (output_bfd != (bfd *) NULL
408 && (symbol->flags & BSF_SECTION_SYM) == 0
409 && (! howto->partial_inplace
410 || reloc_entry->addend == 0))
412 reloc_entry->address += input_section->output_offset;
415 if (output_bfd != NULL)
416 return bfd_reloc_continue;
418 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
419 return bfd_reloc_outofrange;
421 relocation = (symbol->value
422 + symbol->section->output_section->vma
423 + symbol->section->output_offset);
424 relocation += reloc_entry->addend;
425 if (howto->pc_relative)
427 relocation -= (input_section->output_section->vma
428 + input_section->output_offset);
429 relocation -= reloc_entry->address;
432 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
433 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
434 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
436 if ((bfd_signed_vma) relocation < - 0x80000
437 || (bfd_signed_vma) relocation > 0x7ffff)
438 return bfd_reloc_overflow;
444 elf_s390_is_local_label_name (bfd *abfd, const char *name)
446 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
449 return _bfd_elf_is_local_label_name (abfd, name);
452 /* Functions for the 390 ELF linker. */
454 /* The name of the dynamic interpreter. This is put in the .interp
457 #define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
459 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
460 copying dynamic variables from a shared lib into an app's dynbss
461 section, and instead use a dynamic relocation to point into the
463 #define ELIMINATE_COPY_RELOCS 1
465 /* The size in bytes of the first entry in the procedure linkage table. */
466 #define PLT_FIRST_ENTRY_SIZE 32
467 /* The size in bytes of an entry in the procedure linkage table. */
468 #define PLT_ENTRY_SIZE 32
470 #define GOT_ENTRY_SIZE 8
472 #define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela)
474 /* The first three entries in a procedure linkage table are reserved,
475 and the initial contents are unimportant (we zero them out).
476 Subsequent entries look like this. See the SVR4 ABI 386
477 supplement to see how this works. */
479 /* For the s390, simple addr offset can only be 0 - 4096.
480 To use the full 16777216 TB address space, several instructions
481 are needed to load an address in a register and execute
482 a branch( or just saving the address)
484 Furthermore, only r 0 and 1 are free to use!!! */
486 /* The first 3 words in the GOT are then reserved.
487 Word 0 is the address of the dynamic table.
488 Word 1 is a pointer to a structure describing the object
489 Word 2 is used to point to the loader entry address.
491 The code for PLT entries looks like this:
493 The GOT holds the address in the PLT to be executed.
494 The loader then gets:
495 24(15) = Pointer to the structure describing the object.
496 28(15) = Offset in symbol table
497 The loader must then find the module where the function is
498 and insert the address in the GOT.
500 PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
501 LG 1,0(1) # 6 bytes Load address from GOT in r1
502 BCR 15,1 # 2 bytes Jump to address
503 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
504 LGF 1,12(1) # 6 bytes Load offset in symbl table in r1
505 BRCL 15,-x # 6 bytes Jump to start of PLT
506 .long ? # 4 bytes offset into .rela.plt
508 Total = 32 bytes per PLT entry
509 Fixup at offset 2: relative address to GOT entry
510 Fixup at offset 22: relative branch to PLT0
511 Fixup at offset 28: 32 bit offset into .rela.plt
513 A 32 bit offset into the symbol table is enough. It allows for
514 .rela.plt sections up to a size of 2 gigabyte. A single dynamic
515 object (the main program, any shared library) is limited to 4GB in
516 size. Having a .rela.plt of 2GB would already make the .plt
517 section bigger than 8GB. */
519 static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] =
521 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
522 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */
523 0x07, 0xf1, /* br %r1 */
524 0x0d, 0x10, /* basr %r1,%r0 */
525 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */
526 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */
527 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */
530 /* The first PLT entry pushes the offset into the symbol table
531 from R1 onto the stack at 56(15) and the loader object info
532 at 48(15), loads the loader address in R1 and jumps to it. */
534 /* The first entry in the PLT:
537 STG 1,56(15) # r1 contains the offset into the symbol table
538 LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
539 MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
540 LG 1,16(1) # get entry address of loader
541 BCR 15,1 # jump to loader
543 Fixup at offset 8: relative address to start of GOT. */
545 static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] =
547 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */
548 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
549 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */
550 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */
551 0x07, 0xf1, /* br %r1 */
552 0x07, 0x00, /* nopr %r0 */
553 0x07, 0x00, /* nopr %r0 */
554 0x07, 0x00 /* nopr %r0 */
558 /* s390 ELF linker hash entry. */
560 struct elf_s390_link_hash_entry
562 struct elf_link_hash_entry elf;
564 /* Track dynamic relocs copied for this symbol. */
565 struct elf_dyn_relocs *dyn_relocs;
567 /* Number of GOTPLT references for a function. */
568 bfd_signed_vma gotplt_refcount;
570 #define GOT_UNKNOWN 0
574 #define GOT_TLS_IE_NLT 3
575 unsigned char tls_type;
577 /* For pointer equality reasons we might need to change the symbol
578 type from STT_GNU_IFUNC to STT_FUNC together with its value and
579 section entry. So after alloc_dynrelocs only these values should
580 be used. In order to check whether a symbol is IFUNC use
581 s390_is_ifunc_symbol_p. */
582 bfd_vma ifunc_resolver_address;
583 asection *ifunc_resolver_section;
586 #define elf_s390_hash_entry(ent) \
587 ((struct elf_s390_link_hash_entry *)(ent))
589 /* This structure represents an entry in the local PLT list needed for
590 local IFUNC symbols. */
593 /* The section of the local symbol.
594 Set in relocate_section and used in finish_dynamic_sections. */
599 bfd_signed_vma refcount;
604 /* NOTE: Keep this structure in sync with
605 the one declared in elf32-s390.c. */
606 struct elf_s390_obj_tdata
608 struct elf_obj_tdata root;
610 /* A local PLT is needed for ifunc symbols. */
611 struct plt_entry *local_plt;
613 /* TLS type for each local got entry. */
614 char *local_got_tls_type;
617 #define elf_s390_tdata(abfd) \
618 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
620 #define elf_s390_local_plt(abfd) \
621 (elf_s390_tdata (abfd)->local_plt)
623 #define elf_s390_local_got_tls_type(abfd) \
624 (elf_s390_tdata (abfd)->local_got_tls_type)
626 #define is_s390_elf(bfd) \
627 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
628 && elf_tdata (bfd) != NULL \
629 && elf_object_id (bfd) == S390_ELF_DATA)
632 elf_s390_mkobject (bfd *abfd)
634 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
639 elf_s390_object_p (bfd *abfd)
641 /* Set the right machine number for an s390 elf32 file. */
642 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
645 /* s390 ELF linker hash table. */
647 struct elf_s390_link_hash_table
649 struct elf_link_hash_table elf;
651 /* Short-cuts to get to dynamic linker sections. */
657 bfd_signed_vma refcount;
661 /* Small local sym cache. */
662 struct sym_cache sym_cache;
665 /* Get the s390 ELF linker hash table from a link_info structure. */
667 #define elf_s390_hash_table(p) \
668 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
669 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
672 #include "elf-s390-common.c"
674 /* Create an entry in an s390 ELF linker hash table. */
676 static struct bfd_hash_entry *
677 link_hash_newfunc (struct bfd_hash_entry *entry,
678 struct bfd_hash_table *table,
681 /* Allocate the structure if it has not already been allocated by a
685 entry = bfd_hash_allocate (table,
686 sizeof (struct elf_s390_link_hash_entry));
691 /* Call the allocation method of the superclass. */
692 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
695 struct elf_s390_link_hash_entry *eh;
697 eh = (struct elf_s390_link_hash_entry *) entry;
698 eh->dyn_relocs = NULL;
699 eh->gotplt_refcount = 0;
700 eh->tls_type = GOT_UNKNOWN;
701 eh->ifunc_resolver_address = 0;
702 eh->ifunc_resolver_section = NULL;
708 /* Create an s390 ELF linker hash table. */
710 static struct bfd_link_hash_table *
711 elf_s390_link_hash_table_create (bfd *abfd)
713 struct elf_s390_link_hash_table *ret;
714 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
716 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
720 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
721 sizeof (struct elf_s390_link_hash_entry),
728 return &ret->elf.root;
731 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
732 shortcuts to them in our hash table. */
735 create_got_section (bfd *dynobj,
736 struct bfd_link_info *info)
738 struct elf_s390_link_hash_table *htab;
740 if (! _bfd_elf_create_got_section (dynobj, info))
743 htab = elf_s390_hash_table (info);
747 htab->elf.sgot = bfd_get_linker_section (dynobj, ".got");
748 htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
749 htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got");
750 if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot)
755 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
756 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
760 elf_s390_create_dynamic_sections (bfd *dynobj,
761 struct bfd_link_info *info)
763 struct elf_s390_link_hash_table *htab;
765 htab = elf_s390_hash_table (info);
769 if (!htab->elf.sgot && !create_got_section (dynobj, info))
772 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
775 htab->elf.splt = bfd_get_linker_section (dynobj, ".plt");
776 htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt");
777 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
779 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
781 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
782 || (!info->shared && !htab->srelbss))
788 /* Copy the extra info we tack onto an elf_link_hash_entry. */
791 elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
792 struct elf_link_hash_entry *dir,
793 struct elf_link_hash_entry *ind)
795 struct elf_s390_link_hash_entry *edir, *eind;
797 edir = (struct elf_s390_link_hash_entry *) dir;
798 eind = (struct elf_s390_link_hash_entry *) ind;
800 if (eind->dyn_relocs != NULL)
802 if (edir->dyn_relocs != NULL)
804 struct elf_dyn_relocs **pp;
805 struct elf_dyn_relocs *p;
807 /* Add reloc counts against the indirect sym to the direct sym
808 list. Merge any entries against the same section. */
809 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
811 struct elf_dyn_relocs *q;
813 for (q = edir->dyn_relocs; q != NULL; q = q->next)
814 if (q->sec == p->sec)
816 q->pc_count += p->pc_count;
817 q->count += p->count;
824 *pp = edir->dyn_relocs;
827 edir->dyn_relocs = eind->dyn_relocs;
828 eind->dyn_relocs = NULL;
831 if (ind->root.type == bfd_link_hash_indirect
832 && dir->got.refcount <= 0)
834 edir->tls_type = eind->tls_type;
835 eind->tls_type = GOT_UNKNOWN;
838 if (ELIMINATE_COPY_RELOCS
839 && ind->root.type != bfd_link_hash_indirect
840 && dir->dynamic_adjusted)
842 /* If called to transfer flags for a weakdef during processing
843 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
844 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
845 dir->ref_dynamic |= ind->ref_dynamic;
846 dir->ref_regular |= ind->ref_regular;
847 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
848 dir->needs_plt |= ind->needs_plt;
851 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
855 elf_s390_tls_transition (struct bfd_link_info *info,
867 return R_390_TLS_LE64;
868 return R_390_TLS_IE64;
869 case R_390_TLS_GOTIE64:
871 return R_390_TLS_LE64;
872 return R_390_TLS_GOTIE64;
873 case R_390_TLS_LDM64:
874 return R_390_TLS_LE64;
880 /* Look through the relocs for a section during the first phase, and
881 allocate space in the global offset table or procedure linkage
885 elf_s390_check_relocs (bfd *abfd,
886 struct bfd_link_info *info,
888 const Elf_Internal_Rela *relocs)
890 struct elf_s390_link_hash_table *htab;
891 Elf_Internal_Shdr *symtab_hdr;
892 struct elf_link_hash_entry **sym_hashes;
893 const Elf_Internal_Rela *rel;
894 const Elf_Internal_Rela *rel_end;
896 bfd_signed_vma *local_got_refcounts;
897 int tls_type, old_tls_type;
899 if (info->relocatable)
902 BFD_ASSERT (is_s390_elf (abfd));
904 htab = elf_s390_hash_table (info);
908 symtab_hdr = &elf_symtab_hdr (abfd);
909 sym_hashes = elf_sym_hashes (abfd);
910 local_got_refcounts = elf_local_got_refcounts (abfd);
914 rel_end = relocs + sec->reloc_count;
915 for (rel = relocs; rel < rel_end; rel++)
918 unsigned long r_symndx;
919 struct elf_link_hash_entry *h;
920 Elf_Internal_Sym *isym;
922 r_symndx = ELF64_R_SYM (rel->r_info);
924 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
926 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
932 if (r_symndx < symtab_hdr->sh_info)
934 /* A local symbol. */
935 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
940 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
942 struct plt_entry *plt;
944 if (htab->elf.dynobj == NULL)
945 htab->elf.dynobj = abfd;
947 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
950 if (local_got_refcounts == NULL)
952 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
954 local_got_refcounts = elf_local_got_refcounts (abfd);
956 plt = elf_s390_local_plt (abfd);
957 plt[r_symndx].plt.refcount++;
963 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
964 while (h->root.type == bfd_link_hash_indirect
965 || h->root.type == bfd_link_hash_warning)
966 h = (struct elf_link_hash_entry *) h->root.u.i.link;
968 /* PR15323, ref flags aren't set for references in the same
970 h->root.non_ir_ref = 1;
973 /* Create got section and local_got_refcounts array if they
975 r_type = elf_s390_tls_transition (info,
976 ELF64_R_TYPE (rel->r_info),
991 case R_390_GOTPLTENT:
993 case R_390_TLS_GOTIE12:
994 case R_390_TLS_GOTIE20:
995 case R_390_TLS_GOTIE64:
996 case R_390_TLS_IEENT:
998 case R_390_TLS_LDM64:
1000 && local_got_refcounts == NULL)
1002 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
1004 local_got_refcounts = elf_local_got_refcounts (abfd);
1008 case R_390_GOTOFF16:
1009 case R_390_GOTOFF32:
1010 case R_390_GOTOFF64:
1012 case R_390_GOTPCDBL:
1013 if (htab->elf.sgot == NULL)
1015 if (htab->elf.dynobj == NULL)
1016 htab->elf.dynobj = abfd;
1017 if (!create_got_section (htab->elf.dynobj, info))
1024 if (htab->elf.dynobj == NULL)
1025 htab->elf.dynobj = abfd;
1026 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1029 /* Make sure an IFUNC symbol defined in a non-shared object
1030 always gets a PLT slot. */
1031 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1033 /* The symbol is called by the dynamic loader in order
1034 to resolve the relocation. So it is in fact also
1043 case R_390_GOTOFF16:
1044 case R_390_GOTOFF32:
1045 case R_390_GOTOFF64:
1047 case R_390_GOTPCDBL:
1048 /* These relocs do not need a GOT slot. They just load the
1049 GOT pointer itself or address something else relative to
1050 the GOT. Since the GOT pointer has been set up above we
1054 case R_390_PLT12DBL:
1055 case R_390_PLT16DBL:
1056 case R_390_PLT24DBL:
1058 case R_390_PLT32DBL:
1060 case R_390_PLTOFF16:
1061 case R_390_PLTOFF32:
1062 case R_390_PLTOFF64:
1063 /* This symbol requires a procedure linkage table entry. We
1064 actually build the entry in adjust_dynamic_symbol,
1065 because this might be a case of linking PIC code which is
1066 never referenced by a dynamic object, in which case we
1067 don't need to generate a procedure linkage table entry
1070 /* If this is a local symbol, we resolve it directly without
1071 creating a procedure linkage table entry. */
1075 h->plt.refcount += 1;
1079 case R_390_GOTPLT12:
1080 case R_390_GOTPLT16:
1081 case R_390_GOTPLT20:
1082 case R_390_GOTPLT32:
1083 case R_390_GOTPLT64:
1084 case R_390_GOTPLTENT:
1085 /* This symbol requires either a procedure linkage table entry
1086 or an entry in the local got. We actually build the entry
1087 in adjust_dynamic_symbol because whether this is really a
1088 global reference can change and with it the fact if we have
1089 to create a plt entry or a local got entry. To be able to
1090 make a once global symbol a local one we have to keep track
1091 of the number of gotplt references that exist for this
1095 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1097 h->plt.refcount += 1;
1100 local_got_refcounts[r_symndx] += 1;
1103 case R_390_TLS_LDM64:
1104 htab->tls_ldm_got.refcount += 1;
1107 case R_390_TLS_IE64:
1108 case R_390_TLS_GOTIE12:
1109 case R_390_TLS_GOTIE20:
1110 case R_390_TLS_GOTIE64:
1111 case R_390_TLS_IEENT:
1113 info->flags |= DF_STATIC_TLS;
1122 case R_390_TLS_GD64:
1123 /* This symbol requires a global offset table entry. */
1132 tls_type = GOT_NORMAL;
1134 case R_390_TLS_GD64:
1135 tls_type = GOT_TLS_GD;
1137 case R_390_TLS_IE64:
1138 case R_390_TLS_GOTIE64:
1139 tls_type = GOT_TLS_IE;
1141 case R_390_TLS_GOTIE12:
1142 case R_390_TLS_GOTIE20:
1143 case R_390_TLS_IEENT:
1144 tls_type = GOT_TLS_IE_NLT;
1150 h->got.refcount += 1;
1151 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1155 local_got_refcounts[r_symndx] += 1;
1156 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1158 /* If a TLS symbol is accessed using IE at least once,
1159 there is no point to use dynamic model for it. */
1160 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1162 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1164 (*_bfd_error_handler)
1165 (_("%B: `%s' accessed both as normal and thread local symbol"),
1166 abfd, h->root.root.string);
1169 if (old_tls_type > tls_type)
1170 tls_type = old_tls_type;
1173 if (old_tls_type != tls_type)
1176 elf_s390_hash_entry (h)->tls_type = tls_type;
1178 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1181 if (r_type != R_390_TLS_IE64)
1185 case R_390_TLS_LE64:
1186 /* For static linking and executables this reloc will be
1187 calculated at linktime otherwise a TLS_TPOFF runtime
1188 reloc will be generated. */
1189 if (r_type == R_390_TLS_LE64 && info->pie)
1194 info->flags |= DF_STATIC_TLS;
1210 /* If this reloc is in a read-only section, we might
1211 need a copy reloc. We can't check reliably at this
1212 stage whether the section is read-only, as input
1213 sections have not yet been mapped to output sections.
1214 Tentatively set the flag for now, and correct in
1215 adjust_dynamic_symbol. */
1220 /* We may need a .plt entry if the function this reloc
1221 refers to is in a shared lib. */
1222 h->plt.refcount += 1;
1226 /* If we are creating a shared library, and this is a reloc
1227 against a global symbol, or a non PC relative reloc
1228 against a local symbol, then we need to copy the reloc
1229 into the shared library. However, if we are linking with
1230 -Bsymbolic, we do not need to copy a reloc against a
1231 global symbol which is defined in an object we are
1232 including in the link (i.e., DEF_REGULAR is set). At
1233 this point we have not seen all the input files, so it is
1234 possible that DEF_REGULAR is not set now but will be set
1235 later (it is never cleared). In case of a weak definition,
1236 DEF_REGULAR may be cleared later by a strong definition in
1237 a shared library. We account for that possibility below by
1238 storing information in the relocs_copied field of the hash
1239 table entry. A similar situation occurs when creating
1240 shared libraries and symbol visibility changes render the
1243 If on the other hand, we are creating an executable, we
1244 may need to keep relocations for symbols satisfied by a
1245 dynamic library if we manage to avoid copy relocs for the
1248 && (sec->flags & SEC_ALLOC) != 0
1249 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
1250 && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
1251 && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
1252 && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL
1253 && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1254 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1255 && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1257 && (! SYMBOLIC_BIND (info, h)
1258 || h->root.type == bfd_link_hash_defweak
1259 || !h->def_regular))))
1260 || (ELIMINATE_COPY_RELOCS
1262 && (sec->flags & SEC_ALLOC) != 0
1264 && (h->root.type == bfd_link_hash_defweak
1265 || !h->def_regular)))
1267 struct elf_dyn_relocs *p;
1268 struct elf_dyn_relocs **head;
1270 /* We must copy these reloc types into the output file.
1271 Create a reloc section in dynobj and make room for
1275 if (htab->elf.dynobj == NULL)
1276 htab->elf.dynobj = abfd;
1278 sreloc = _bfd_elf_make_dynamic_reloc_section
1279 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
1285 /* If this is a global symbol, we count the number of
1286 relocations we need for this symbol. */
1289 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1293 /* Track dynamic relocs needed for local syms too.
1294 We really need local syms available to do this
1299 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1304 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1308 vpp = &elf_section_data (s)->local_dynrel;
1309 head = (struct elf_dyn_relocs **) vpp;
1313 if (p == NULL || p->sec != sec)
1315 bfd_size_type amt = sizeof *p;
1316 p = ((struct elf_dyn_relocs *)
1317 bfd_alloc (htab->elf.dynobj, amt));
1328 if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
1329 || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL
1330 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1331 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1332 || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1333 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1334 || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1339 /* This relocation describes the C++ object vtable hierarchy.
1340 Reconstruct it for later use during GC. */
1341 case R_390_GNU_VTINHERIT:
1342 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1346 /* This relocation describes which C++ vtable entries are actually
1347 used. Record for later use during GC. */
1348 case R_390_GNU_VTENTRY:
1349 BFD_ASSERT (h != NULL);
1351 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1363 /* Return the section that should be marked against GC for a given
1367 elf_s390_gc_mark_hook (asection *sec,
1368 struct bfd_link_info *info,
1369 Elf_Internal_Rela *rel,
1370 struct elf_link_hash_entry *h,
1371 Elf_Internal_Sym *sym)
1374 switch (ELF64_R_TYPE (rel->r_info))
1376 case R_390_GNU_VTINHERIT:
1377 case R_390_GNU_VTENTRY:
1381 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1384 /* Update the got entry reference counts for the section being removed. */
1387 elf_s390_gc_sweep_hook (bfd *abfd,
1388 struct bfd_link_info *info,
1390 const Elf_Internal_Rela *relocs)
1392 struct elf_s390_link_hash_table *htab;
1393 Elf_Internal_Shdr *symtab_hdr;
1394 struct elf_link_hash_entry **sym_hashes;
1395 bfd_signed_vma *local_got_refcounts;
1396 const Elf_Internal_Rela *rel, *relend;
1398 if (info->relocatable)
1401 htab = elf_s390_hash_table (info);
1405 elf_section_data (sec)->local_dynrel = NULL;
1407 symtab_hdr = &elf_symtab_hdr (abfd);
1408 sym_hashes = elf_sym_hashes (abfd);
1409 local_got_refcounts = elf_local_got_refcounts (abfd);
1411 relend = relocs + sec->reloc_count;
1412 for (rel = relocs; rel < relend; rel++)
1414 unsigned long r_symndx;
1415 unsigned int r_type;
1416 struct elf_link_hash_entry *h = NULL;
1418 r_symndx = ELF64_R_SYM (rel->r_info);
1419 if (r_symndx >= symtab_hdr->sh_info)
1421 struct elf_s390_link_hash_entry *eh;
1422 struct elf_dyn_relocs **pp;
1423 struct elf_dyn_relocs *p;
1425 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1426 while (h->root.type == bfd_link_hash_indirect
1427 || h->root.type == bfd_link_hash_warning)
1428 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1429 eh = (struct elf_s390_link_hash_entry *) h;
1431 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1434 /* Everything must go for SEC. */
1441 Elf_Internal_Sym *isym;
1443 /* A local symbol. */
1444 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1449 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1451 struct plt_entry *plt = elf_s390_local_plt (abfd);
1452 if (plt[r_symndx].plt.refcount > 0)
1453 plt[r_symndx].plt.refcount--;
1457 r_type = ELF64_R_TYPE (rel->r_info);
1458 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1461 case R_390_TLS_LDM64:
1462 if (htab->tls_ldm_got.refcount > 0)
1463 htab->tls_ldm_got.refcount -= 1;
1466 case R_390_TLS_GD64:
1467 case R_390_TLS_IE64:
1468 case R_390_TLS_GOTIE12:
1469 case R_390_TLS_GOTIE20:
1470 case R_390_TLS_GOTIE64:
1471 case R_390_TLS_IEENT:
1477 case R_390_GOTOFF16:
1478 case R_390_GOTOFF32:
1479 case R_390_GOTOFF64:
1481 case R_390_GOTPCDBL:
1485 if (h->got.refcount > 0)
1486 h->got.refcount -= 1;
1488 else if (local_got_refcounts != NULL)
1490 if (local_got_refcounts[r_symndx] > 0)
1491 local_got_refcounts[r_symndx] -= 1;
1512 case R_390_PLT12DBL:
1513 case R_390_PLT16DBL:
1514 case R_390_PLT24DBL:
1516 case R_390_PLT32DBL:
1518 case R_390_PLTOFF16:
1519 case R_390_PLTOFF32:
1520 case R_390_PLTOFF64:
1523 if (h->plt.refcount > 0)
1524 h->plt.refcount -= 1;
1528 case R_390_GOTPLT12:
1529 case R_390_GOTPLT16:
1530 case R_390_GOTPLT20:
1531 case R_390_GOTPLT32:
1532 case R_390_GOTPLT64:
1533 case R_390_GOTPLTENT:
1536 if (h->plt.refcount > 0)
1538 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1539 h->plt.refcount -= 1;
1542 else if (local_got_refcounts != NULL)
1544 if (local_got_refcounts[r_symndx] > 0)
1545 local_got_refcounts[r_symndx] -= 1;
1557 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1558 entry but we found we will not create any. Called when we find we will
1559 not have any PLT for this symbol, by for example
1560 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1561 or elf_s390_size_dynamic_sections if no dynamic sections will be
1562 created (we're only linking static objects). */
1565 elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
1567 if (h->elf.root.type == bfd_link_hash_warning)
1568 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1570 if (h->gotplt_refcount <= 0)
1573 /* We simply add the number of gotplt references to the number
1574 * of got references for this symbol. */
1575 h->elf.got.refcount += h->gotplt_refcount;
1576 h->gotplt_refcount = -1;
1579 /* Adjust a symbol defined by a dynamic object and referenced by a
1580 regular object. The current definition is in some section of the
1581 dynamic object, but we're not including those sections. We have to
1582 change the definition to something the rest of the link can
1586 elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1587 struct elf_link_hash_entry *h)
1589 struct elf_s390_link_hash_table *htab;
1592 /* STT_GNU_IFUNC symbol must go through PLT. */
1593 if (s390_is_ifunc_symbol_p (h))
1596 /* If this is a function, put it in the procedure linkage table. We
1597 will fill in the contents of the procedure linkage table later
1598 (although we could actually do it here). */
1599 if (h->type == STT_FUNC
1602 if (h->plt.refcount <= 0
1603 || SYMBOL_CALLS_LOCAL (info, h)
1604 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1605 && h->root.type == bfd_link_hash_undefweak))
1607 /* This case can occur if we saw a PLT32 reloc in an input
1608 file, but the symbol was never referred to by a dynamic
1609 object, or if all references were garbage collected. In
1610 such a case, we don't actually need to build a procedure
1611 linkage table, and we can just do a PC32 reloc instead. */
1612 h->plt.offset = (bfd_vma) -1;
1614 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1620 /* It's possible that we incorrectly decided a .plt reloc was
1621 needed for an R_390_PC32 reloc to a non-function sym in
1622 check_relocs. We can't decide accurately between function and
1623 non-function syms in check-relocs; Objects loaded later in
1624 the link may change h->type. So fix it now. */
1625 h->plt.offset = (bfd_vma) -1;
1627 /* If this is a weak symbol, and there is a real definition, the
1628 processor independent code will have arranged for us to see the
1629 real definition first, and we can just use the same value. */
1630 if (h->u.weakdef != NULL)
1632 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1633 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1634 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1635 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1636 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1637 h->non_got_ref = h->u.weakdef->non_got_ref;
1641 /* This is a reference to a symbol defined by a dynamic object which
1642 is not a function. */
1644 /* If we are creating a shared library, we must presume that the
1645 only references to the symbol are via the global offset table.
1646 For such cases we need not do anything here; the relocations will
1647 be handled correctly by relocate_section. */
1651 /* If there are no references to this symbol that do not use the
1652 GOT, we don't need to generate a copy reloc. */
1653 if (!h->non_got_ref)
1656 /* If -z nocopyreloc was given, we won't generate them either. */
1657 if (info->nocopyreloc)
1663 if (ELIMINATE_COPY_RELOCS)
1665 struct elf_s390_link_hash_entry * eh;
1666 struct elf_dyn_relocs *p;
1668 eh = (struct elf_s390_link_hash_entry *) h;
1669 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1671 s = p->sec->output_section;
1672 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1676 /* If we didn't find any dynamic relocs in read-only sections, then
1677 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1685 /* We must allocate the symbol in our .dynbss section, which will
1686 become part of the .bss section of the executable. There will be
1687 an entry for this symbol in the .dynsym section. The dynamic
1688 object will contain position independent code, so all references
1689 from the dynamic object to this symbol will go through the global
1690 offset table. The dynamic linker will use the .dynsym entry to
1691 determine the address it must put in the global offset table, so
1692 both the dynamic object and the regular object will refer to the
1693 same memory location for the variable. */
1695 htab = elf_s390_hash_table (info);
1699 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1700 copy the initial value out of the dynamic object and into the
1701 runtime process image. */
1702 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
1704 htab->srelbss->size += sizeof (Elf64_External_Rela);
1710 return _bfd_elf_adjust_dynamic_copy (info, h, s);
1713 /* Allocate space in .plt, .got and associated reloc sections for
1717 allocate_dynrelocs (struct elf_link_hash_entry *h,
1720 struct bfd_link_info *info;
1721 struct elf_s390_link_hash_table *htab;
1722 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
1723 struct elf_dyn_relocs *p;
1725 if (h->root.type == bfd_link_hash_indirect)
1728 info = (struct bfd_link_info *) inf;
1729 htab = elf_s390_hash_table (info);
1733 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1734 here if it is defined and referenced in a non-shared object. */
1735 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1736 return s390_elf_allocate_ifunc_dyn_relocs (info, h,
1738 else if (htab->elf.dynamic_sections_created
1739 && h->plt.refcount > 0)
1741 /* Make sure this symbol is output as a dynamic symbol.
1742 Undefined weak syms won't yet be marked as dynamic. */
1743 if (h->dynindx == -1
1744 && !h->forced_local)
1746 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1751 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1753 asection *s = htab->elf.splt;
1755 /* If this is the first .plt entry, make room for the special
1758 s->size += PLT_FIRST_ENTRY_SIZE;
1760 h->plt.offset = s->size;
1762 /* If this symbol is not defined in a regular file, and we are
1763 not generating a shared library, then set the symbol to this
1764 location in the .plt. This is required to make function
1765 pointers compare as equal between the normal executable and
1766 the shared library. */
1770 h->root.u.def.section = s;
1771 h->root.u.def.value = h->plt.offset;
1774 /* Make room for this entry. */
1775 s->size += PLT_ENTRY_SIZE;
1777 /* We also need to make an entry in the .got.plt section, which
1778 will be placed in the .got section by the linker script. */
1779 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
1781 /* We also need to make an entry in the .rela.plt section. */
1782 htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
1786 h->plt.offset = (bfd_vma) -1;
1788 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1793 h->plt.offset = (bfd_vma) -1;
1795 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1798 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1799 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1800 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1801 we can save the dynamic TLS relocation. */
1802 if (h->got.refcount > 0
1805 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1807 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1808 /* For the GOTIE access without a literal pool entry the offset has
1809 to be stored somewhere. The immediate value in the instruction
1810 is not bit enough so the value is stored in the got. */
1812 h->got.offset = htab->elf.sgot->size;
1813 htab->elf.sgot->size += GOT_ENTRY_SIZE;
1816 h->got.offset = (bfd_vma) -1;
1818 else if (h->got.refcount > 0)
1822 int tls_type = elf_s390_hash_entry(h)->tls_type;
1824 /* Make sure this symbol is output as a dynamic symbol.
1825 Undefined weak syms won't yet be marked as dynamic. */
1826 if (h->dynindx == -1
1827 && !h->forced_local)
1829 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1834 h->got.offset = s->size;
1835 s->size += GOT_ENTRY_SIZE;
1836 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1837 if (tls_type == GOT_TLS_GD)
1838 s->size += GOT_ENTRY_SIZE;
1839 dyn = htab->elf.dynamic_sections_created;
1840 /* R_390_TLS_IE64 needs one dynamic relocation,
1841 R_390_TLS_GD64 needs one if local symbol and two if global. */
1842 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1843 || tls_type >= GOT_TLS_IE)
1844 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
1845 else if (tls_type == GOT_TLS_GD)
1846 htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
1847 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1848 || h->root.type != bfd_link_hash_undefweak)
1850 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1851 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
1854 h->got.offset = (bfd_vma) -1;
1856 if (eh->dyn_relocs == NULL)
1859 /* In the shared -Bsymbolic case, discard space allocated for
1860 dynamic pc-relative relocs against symbols which turn out to be
1861 defined in regular objects. For the normal shared case, discard
1862 space for pc-relative relocs that have become local due to symbol
1863 visibility changes. */
1867 if (SYMBOL_CALLS_LOCAL (info, h))
1869 struct elf_dyn_relocs **pp;
1871 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1873 p->count -= p->pc_count;
1882 /* Also discard relocs on undefined weak syms with non-default
1884 if (eh->dyn_relocs != NULL
1885 && h->root.type == bfd_link_hash_undefweak)
1887 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1888 eh->dyn_relocs = NULL;
1890 /* Make sure undefined weak symbols are output as a dynamic
1892 else if (h->dynindx == -1
1893 && !h->forced_local)
1895 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1900 else if (ELIMINATE_COPY_RELOCS)
1902 /* For the non-shared case, discard space for relocs against
1903 symbols which turn out to need copy relocs or are not
1909 || (htab->elf.dynamic_sections_created
1910 && (h->root.type == bfd_link_hash_undefweak
1911 || h->root.type == bfd_link_hash_undefined))))
1913 /* Make sure this symbol is output as a dynamic symbol.
1914 Undefined weak syms won't yet be marked as dynamic. */
1915 if (h->dynindx == -1
1916 && !h->forced_local)
1918 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1922 /* If that succeeded, we know we'll be keeping all the
1924 if (h->dynindx != -1)
1928 eh->dyn_relocs = NULL;
1933 /* Finally, allocate space. */
1934 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1936 asection *sreloc = elf_section_data (p->sec)->sreloc;
1937 sreloc->size += p->count * sizeof (Elf64_External_Rela);
1943 /* Find any dynamic relocs that apply to read-only sections. */
1946 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1948 struct elf_s390_link_hash_entry *eh;
1949 struct elf_dyn_relocs *p;
1951 eh = (struct elf_s390_link_hash_entry *) h;
1952 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1954 asection *s = p->sec->output_section;
1956 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1958 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1960 info->flags |= DF_TEXTREL;
1962 /* Not an error, just cut short the traversal. */
1969 /* Set the sizes of the dynamic sections. */
1972 elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1973 struct bfd_link_info *info)
1975 struct elf_s390_link_hash_table *htab;
1981 htab = elf_s390_hash_table (info);
1985 dynobj = htab->elf.dynobj;
1989 if (htab->elf.dynamic_sections_created)
1991 /* Set the contents of the .interp section to the interpreter. */
1992 if (info->executable)
1994 s = bfd_get_linker_section (dynobj, ".interp");
1997 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1998 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2002 /* Set up .got offsets for local syms, and space for local dynamic
2004 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2006 bfd_signed_vma *local_got;
2007 bfd_signed_vma *end_local_got;
2008 char *local_tls_type;
2009 bfd_size_type locsymcount;
2010 Elf_Internal_Shdr *symtab_hdr;
2012 struct plt_entry *local_plt;
2015 if (! is_s390_elf (ibfd))
2018 for (s = ibfd->sections; s != NULL; s = s->next)
2020 struct elf_dyn_relocs *p;
2022 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2024 if (!bfd_is_abs_section (p->sec)
2025 && bfd_is_abs_section (p->sec->output_section))
2027 /* Input section has been discarded, either because
2028 it is a copy of a linkonce section or due to
2029 linker script /DISCARD/, so we'll be discarding
2032 else if (p->count != 0)
2034 srela = elf_section_data (p->sec)->sreloc;
2035 srela->size += p->count * sizeof (Elf64_External_Rela);
2036 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2037 info->flags |= DF_TEXTREL;
2042 local_got = elf_local_got_refcounts (ibfd);
2046 symtab_hdr = &elf_symtab_hdr (ibfd);
2047 locsymcount = symtab_hdr->sh_info;
2048 end_local_got = local_got + locsymcount;
2049 local_tls_type = elf_s390_local_got_tls_type (ibfd);
2051 srela = htab->elf.srelgot;
2052 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2056 *local_got = s->size;
2057 s->size += GOT_ENTRY_SIZE;
2058 if (*local_tls_type == GOT_TLS_GD)
2059 s->size += GOT_ENTRY_SIZE;
2061 srela->size += sizeof (Elf64_External_Rela);
2064 *local_got = (bfd_vma) -1;
2067 local_plt = elf_s390_local_plt (ibfd);
2068 for (i = 0; i < symtab_hdr->sh_info; i++)
2070 if (local_plt[i].plt.refcount > 0)
2072 local_plt[i].plt.offset = htab->elf.iplt->size;
2073 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2074 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2075 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
2078 local_plt[i].plt.offset = (bfd_vma) -1;
2082 if (htab->tls_ldm_got.refcount > 0)
2084 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
2086 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2087 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2088 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
2091 htab->tls_ldm_got.offset = -1;
2093 /* Allocate global sym .plt and .got entries, and space for global
2094 sym dynamic relocs. */
2095 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2097 /* We now have determined the sizes of the various dynamic sections.
2098 Allocate memory for them. */
2100 for (s = dynobj->sections; s != NULL; s = s->next)
2102 if ((s->flags & SEC_LINKER_CREATED) == 0)
2105 if (s == htab->elf.splt
2106 || s == htab->elf.sgot
2107 || s == htab->elf.sgotplt
2108 || s == htab->sdynbss
2109 || s == htab->elf.iplt
2110 || s == htab->elf.igotplt
2111 || s == htab->irelifunc)
2113 /* Strip this section if we don't need it; see the
2116 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2118 if (s->size != 0 && s != htab->elf.srelplt)
2121 /* We use the reloc_count field as a counter if we need
2122 to copy relocs into the output file. */
2127 /* It's not one of our sections, so don't allocate space. */
2133 /* If we don't need this section, strip it from the
2134 output file. This is to handle .rela.bss and
2135 .rela.plt. We must create it in
2136 create_dynamic_sections, because it must be created
2137 before the linker maps input sections to output
2138 sections. The linker does that before
2139 adjust_dynamic_symbol is called, and it is that
2140 function which decides whether anything needs to go
2141 into these sections. */
2143 s->flags |= SEC_EXCLUDE;
2147 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2150 /* Allocate memory for the section contents. We use bfd_zalloc
2151 here in case unused entries are not reclaimed before the
2152 section's contents are written out. This should not happen,
2153 but this way if it does, we get a R_390_NONE reloc instead
2155 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2156 if (s->contents == NULL)
2160 if (htab->elf.dynamic_sections_created)
2162 /* Add some entries to the .dynamic section. We fill in the
2163 values later, in elf_s390_finish_dynamic_sections, but we
2164 must add the entries now so that we get the correct size for
2165 the .dynamic section. The DT_DEBUG entry is filled in by the
2166 dynamic linker and used by the debugger. */
2167 #define add_dynamic_entry(TAG, VAL) \
2168 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2170 if (info->executable)
2172 if (!add_dynamic_entry (DT_DEBUG, 0))
2176 if (htab->elf.splt->size != 0)
2178 if (!add_dynamic_entry (DT_PLTGOT, 0)
2179 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2180 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2181 || !add_dynamic_entry (DT_JMPREL, 0))
2187 if (!add_dynamic_entry (DT_RELA, 0)
2188 || !add_dynamic_entry (DT_RELASZ, 0)
2189 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
2192 /* If any dynamic relocs apply to a read-only section,
2193 then we need a DT_TEXTREL entry. */
2194 if ((info->flags & DF_TEXTREL) == 0)
2195 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2198 if ((info->flags & DF_TEXTREL) != 0)
2200 if (!add_dynamic_entry (DT_TEXTREL, 0))
2205 #undef add_dynamic_entry
2210 /* Return the base VMA address which should be subtracted from real addresses
2211 when resolving @dtpoff relocation.
2212 This is PT_TLS segment p_vaddr. */
2215 dtpoff_base (struct bfd_link_info *info)
2217 /* If tls_sec is NULL, we should have signalled an error already. */
2218 if (elf_hash_table (info)->tls_sec == NULL)
2220 return elf_hash_table (info)->tls_sec->vma;
2223 /* Return the relocation value for @tpoff relocation
2224 if STT_TLS virtual address is ADDRESS. */
2227 tpoff (struct bfd_link_info *info, bfd_vma address)
2229 struct elf_link_hash_table *htab = elf_hash_table (info);
2231 /* If tls_sec is NULL, we should have signalled an error already. */
2232 if (htab->tls_sec == NULL)
2234 return htab->tls_size + htab->tls_sec->vma - address;
2237 /* Complain if TLS instruction relocation is against an invalid
2241 invalid_tls_insn (bfd *input_bfd,
2242 asection *input_section,
2243 Elf_Internal_Rela *rel)
2245 reloc_howto_type *howto;
2247 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
2248 (*_bfd_error_handler)
2249 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2252 (long) rel->r_offset,
2254 bfd_set_error (bfd_error_bad_value);
2257 /* Relocate a 390 ELF section. */
2260 elf_s390_relocate_section (bfd *output_bfd,
2261 struct bfd_link_info *info,
2263 asection *input_section,
2265 Elf_Internal_Rela *relocs,
2266 Elf_Internal_Sym *local_syms,
2267 asection **local_sections)
2269 struct elf_s390_link_hash_table *htab;
2270 Elf_Internal_Shdr *symtab_hdr;
2271 struct elf_link_hash_entry **sym_hashes;
2272 bfd_vma *local_got_offsets;
2273 Elf_Internal_Rela *rel;
2274 Elf_Internal_Rela *relend;
2276 BFD_ASSERT (is_s390_elf (input_bfd));
2278 htab = elf_s390_hash_table (info);
2282 symtab_hdr = &elf_symtab_hdr (input_bfd);
2283 sym_hashes = elf_sym_hashes (input_bfd);
2284 local_got_offsets = elf_local_got_offsets (input_bfd);
2287 relend = relocs + input_section->reloc_count;
2288 for (; rel < relend; rel++)
2290 unsigned int r_type;
2291 reloc_howto_type *howto;
2292 unsigned long r_symndx;
2293 struct elf_link_hash_entry *h;
2294 Elf_Internal_Sym *sym;
2298 bfd_boolean unresolved_reloc;
2299 bfd_reloc_status_type r;
2301 asection *base_got = htab->elf.sgot;
2303 r_type = ELF64_R_TYPE (rel->r_info);
2304 if (r_type == (int) R_390_GNU_VTINHERIT
2305 || r_type == (int) R_390_GNU_VTENTRY)
2307 if (r_type >= (int) R_390_max)
2309 bfd_set_error (bfd_error_bad_value);
2313 howto = elf_howto_table + r_type;
2314 r_symndx = ELF64_R_SYM (rel->r_info);
2319 unresolved_reloc = FALSE;
2320 if (r_symndx < symtab_hdr->sh_info)
2322 sym = local_syms + r_symndx;
2323 sec = local_sections[r_symndx];
2325 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2327 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2328 if (local_plt == NULL)
2331 /* Address of the PLT slot. */
2332 relocation = (htab->elf.iplt->output_section->vma
2333 + htab->elf.iplt->output_offset
2334 + local_plt[r_symndx].plt.offset);
2338 case R_390_PLTOFF16:
2339 case R_390_PLTOFF32:
2340 case R_390_PLTOFF64:
2341 relocation -= htab->elf.sgot->output_section->vma;
2343 case R_390_GOTPLT12:
2344 case R_390_GOTPLT16:
2345 case R_390_GOTPLT20:
2346 case R_390_GOTPLT32:
2347 case R_390_GOTPLT64:
2348 case R_390_GOTPLTENT:
2356 /* Write the PLT slot address into the GOT slot. */
2357 bfd_put_64 (output_bfd, relocation,
2358 htab->elf.sgot->contents +
2359 local_got_offsets[r_symndx]);
2360 relocation = (local_got_offsets[r_symndx] +
2361 htab->elf.sgot->output_offset);
2363 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2364 relocation += htab->elf.sgot->output_section->vma;
2370 /* The output section is needed later in
2371 finish_dynamic_section when creating the dynamic
2373 local_plt[r_symndx].sec = sec;
2377 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2381 bfd_boolean warned ATTRIBUTE_UNUSED;
2382 bfd_boolean ignored ATTRIBUTE_UNUSED;
2384 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2385 r_symndx, symtab_hdr, sym_hashes,
2387 unresolved_reloc, warned, ignored);
2390 if (sec != NULL && discarded_section (sec))
2391 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2392 rel, 1, relend, howto, 0, contents);
2394 if (info->relocatable)
2399 case R_390_GOTPLT12:
2400 case R_390_GOTPLT16:
2401 case R_390_GOTPLT20:
2402 case R_390_GOTPLT32:
2403 case R_390_GOTPLT64:
2404 case R_390_GOTPLTENT:
2405 /* There are three cases for a GOTPLT relocation. 1) The
2406 relocation is against the jump slot entry of a plt that
2407 will get emitted to the output file. 2) The relocation
2408 is against the jump slot of a plt entry that has been
2409 removed. elf_s390_adjust_gotplt has created a GOT entry
2410 as replacement. 3) The relocation is against a local symbol.
2411 Cases 2) and 3) are the same as the GOT relocation code
2412 so we just have to test for case 1 and fall through for
2414 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2418 if (s390_is_ifunc_symbol_p (h))
2420 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2421 relocation = (plt_index * GOT_ENTRY_SIZE +
2422 htab->elf.igotplt->output_offset);
2423 if (r_type == R_390_GOTPLTENT)
2424 relocation += htab->elf.igotplt->output_section->vma;
2429 Current offset - size first entry / entry size. */
2430 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2433 /* Offset in GOT is PLT index plus GOT headers(3)
2434 times 4, addr & GOT addr. */
2435 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2436 if (r_type == R_390_GOTPLTENT)
2437 relocation += htab->elf.sgot->output_section->vma;
2439 unresolved_reloc = FALSE;
2450 /* Relocation is to the entry for this symbol in the global
2452 if (base_got == NULL)
2459 off = h->got.offset;
2460 dyn = htab->elf.dynamic_sections_created;
2462 if (s390_is_ifunc_symbol_p (h))
2464 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2465 if (off == (bfd_vma)-1)
2467 /* No explicit GOT usage so redirect to the
2469 base_got = htab->elf.igotplt;
2470 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2474 /* Explicit GOT slots must contain the address
2475 of the PLT slot. This will be handled in
2476 finish_dynamic_symbol. */
2479 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2481 && SYMBOL_REFERENCES_LOCAL (info, h))
2482 || (ELF_ST_VISIBILITY (h->other)
2483 && h->root.type == bfd_link_hash_undefweak))
2485 /* This is actually a static link, or it is a
2486 -Bsymbolic link and the symbol is defined
2487 locally, or the symbol was forced to be local
2488 because of a version file. We must initialize
2489 this entry in the global offset table. Since the
2490 offset must always be a multiple of 2, we use the
2491 least significant bit to record whether we have
2492 initialized it already.
2494 When doing a dynamic link, we create a .rel.got
2495 relocation entry to initialize the value. This
2496 is done in the finish_dynamic_symbol routine. */
2501 bfd_put_64 (output_bfd, relocation,
2502 base_got->contents + off);
2508 && SYMBOL_REFERENCES_LOCAL (info, h))
2509 /* lgrl rx,sym@GOTENT -> larl rx, sym */
2510 && ((r_type == R_390_GOTENT
2511 && (bfd_get_16 (input_bfd,
2512 contents + rel->r_offset - 2)
2513 & 0xff0f) == 0xc408)
2514 /* lg rx, sym@GOT(r12) -> larl rx, sym */
2515 || (r_type == R_390_GOT20
2516 && (bfd_get_32 (input_bfd,
2517 contents + rel->r_offset - 2)
2518 & 0xff00f000) == 0xe300c000
2519 && bfd_get_8 (input_bfd,
2520 contents + rel->r_offset + 3) == 0x04)))
2523 unsigned short new_insn =
2524 (0xc000 | (bfd_get_8 (input_bfd,
2525 contents + rel->r_offset - 1) & 0xf0));
2526 bfd_put_16 (output_bfd, new_insn,
2527 contents + rel->r_offset - 2);
2528 r_type = R_390_PC32DBL;
2530 howto = elf_howto_table + r_type;
2531 relocation = h->root.u.def.value
2532 + h->root.u.def.section->output_section->vma
2533 + h->root.u.def.section->output_offset;
2538 unresolved_reloc = FALSE;
2542 if (local_got_offsets == NULL)
2545 off = local_got_offsets[r_symndx];
2547 /* The offset must always be a multiple of 8. We use
2548 the least significant bit to record whether we have
2549 already generated the necessary reloc. */
2554 bfd_put_64 (output_bfd, relocation,
2555 htab->elf.sgot->contents + off);
2560 Elf_Internal_Rela outrel;
2563 s = htab->elf.srelgot;
2567 outrel.r_offset = (htab->elf.sgot->output_section->vma
2568 + htab->elf.sgot->output_offset
2570 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2571 outrel.r_addend = relocation;
2573 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2574 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2577 local_got_offsets[r_symndx] |= 1;
2581 if (off >= (bfd_vma) -2)
2584 relocation = base_got->output_offset + off;
2586 /* For @GOTENT the relocation is against the offset between
2587 the instruction and the symbols entry in the GOT and not
2588 between the start of the GOT and the symbols entry. We
2589 add the vma of the GOT to get the correct value. */
2590 if ( r_type == R_390_GOTENT
2591 || r_type == R_390_GOTPLTENT)
2592 relocation += base_got->output_section->vma;
2596 case R_390_GOTOFF16:
2597 case R_390_GOTOFF32:
2598 case R_390_GOTOFF64:
2599 /* Relocation is relative to the start of the global offset
2602 /* Note that sgot->output_offset is not involved in this
2603 calculation. We always want the start of .got. If we
2604 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2605 permitted by the ABI, we might have to change this
2607 relocation -= htab->elf.sgot->output_section->vma;
2611 case R_390_GOTPCDBL:
2612 /* Use global offset table as symbol value. */
2613 relocation = htab->elf.sgot->output_section->vma;
2614 unresolved_reloc = FALSE;
2617 case R_390_PLT12DBL:
2618 case R_390_PLT16DBL:
2619 case R_390_PLT24DBL:
2621 case R_390_PLT32DBL:
2623 /* Relocation is to the entry for this symbol in the
2624 procedure linkage table. */
2626 /* Resolve a PLT32 reloc against a local symbol directly,
2627 without using the procedure linkage table. */
2631 if (h->plt.offset == (bfd_vma) -1
2632 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
2634 /* We didn't make a PLT entry for this symbol. This
2635 happens when statically linking PIC code, or when
2636 using -Bsymbolic. */
2639 if (s390_is_ifunc_symbol_p (h))
2640 relocation = (htab->elf.iplt->output_section->vma
2641 + htab->elf.iplt->output_offset
2644 relocation = (htab->elf.splt->output_section->vma
2645 + htab->elf.splt->output_offset
2647 unresolved_reloc = FALSE;
2650 case R_390_PLTOFF16:
2651 case R_390_PLTOFF32:
2652 case R_390_PLTOFF64:
2653 /* Relocation is to the entry for this symbol in the
2654 procedure linkage table relative to the start of the GOT. */
2656 /* For local symbols or if we didn't make a PLT entry for
2657 this symbol resolve the symbol directly. */
2659 || h->plt.offset == (bfd_vma) -1
2660 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
2662 relocation -= htab->elf.sgot->output_section->vma;
2666 if (s390_is_ifunc_symbol_p (h))
2667 relocation = (htab->elf.iplt->output_section->vma
2668 + htab->elf.iplt->output_offset
2670 - htab->elf.sgot->output_section->vma);
2672 relocation = (htab->elf.splt->output_section->vma
2673 + htab->elf.splt->output_offset
2675 - htab->elf.sgot->output_section->vma);
2676 unresolved_reloc = FALSE;
2692 && s390_is_ifunc_symbol_p (h)
2695 if (!info->shared || !h->non_got_ref)
2697 /* For a non-shared object STT_GNU_IFUNC symbol must
2699 relocation = (htab->elf.iplt->output_section->vma
2700 + htab->elf.iplt->output_offset
2706 /* For shared objects a runtime relocation is needed. */
2708 Elf_Internal_Rela outrel;
2711 /* Need a dynamic relocation to get the real function
2713 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2717 if (outrel.r_offset == (bfd_vma) -1
2718 || outrel.r_offset == (bfd_vma) -2)
2721 outrel.r_offset += (input_section->output_section->vma
2722 + input_section->output_offset);
2724 if (h->dynindx == -1
2726 || info->executable)
2728 /* This symbol is resolved locally. */
2729 outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
2730 outrel.r_addend = (h->root.u.def.value
2731 + h->root.u.def.section->output_section->vma
2732 + h->root.u.def.section->output_offset);
2736 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2737 outrel.r_addend = 0;
2740 sreloc = htab->elf.irelifunc;
2741 elf_append_rela (output_bfd, sreloc, &outrel);
2743 /* If this reloc is against an external symbol, we
2744 do not want to fiddle with the addend. Otherwise,
2745 we need to include the symbol value so that it
2746 becomes an addend for the dynamic reloc. For an
2747 internal symbol, we have updated addend. */
2752 if ((input_section->flags & SEC_ALLOC) == 0)
2757 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2758 || h->root.type != bfd_link_hash_undefweak)
2759 && ((r_type != R_390_PC16
2760 && r_type != R_390_PC12DBL
2761 && r_type != R_390_PC16DBL
2762 && r_type != R_390_PC24DBL
2763 && r_type != R_390_PC32
2764 && r_type != R_390_PC32DBL
2765 && r_type != R_390_PC64)
2766 || !SYMBOL_CALLS_LOCAL (info, h)))
2767 || (ELIMINATE_COPY_RELOCS
2774 || h->root.type == bfd_link_hash_undefweak
2775 || h->root.type == bfd_link_hash_undefined)))
2777 Elf_Internal_Rela outrel;
2778 bfd_boolean skip, relocate;
2782 /* When generating a shared object, these relocations
2783 are copied into the output file to be resolved at run
2789 _bfd_elf_section_offset (output_bfd, info, input_section,
2791 if (outrel.r_offset == (bfd_vma) -1)
2793 else if (outrel.r_offset == (bfd_vma) -2)
2794 skip = TRUE, relocate = TRUE;
2796 outrel.r_offset += (input_section->output_section->vma
2797 + input_section->output_offset);
2800 memset (&outrel, 0, sizeof outrel);
2803 && (r_type == R_390_PC16
2804 || r_type == R_390_PC12DBL
2805 || r_type == R_390_PC16DBL
2806 || r_type == R_390_PC24DBL
2807 || r_type == R_390_PC32
2808 || r_type == R_390_PC32DBL
2809 || r_type == R_390_PC64
2811 || !SYMBOLIC_BIND (info, h)
2812 || !h->def_regular))
2814 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2815 outrel.r_addend = rel->r_addend;
2819 /* This symbol is local, or marked to become local. */
2820 outrel.r_addend = relocation + rel->r_addend;
2821 if (r_type == R_390_64)
2824 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2830 if (bfd_is_abs_section (sec))
2832 else if (sec == NULL || sec->owner == NULL)
2834 bfd_set_error(bfd_error_bad_value);
2841 osec = sec->output_section;
2842 sindx = elf_section_data (osec)->dynindx;
2846 osec = htab->elf.text_index_section;
2847 sindx = elf_section_data (osec)->dynindx;
2849 BFD_ASSERT (sindx != 0);
2851 /* We are turning this relocation into one
2852 against a section symbol, so subtract out
2853 the output section's address but not the
2854 offset of the input section in the output
2856 outrel.r_addend -= osec->vma;
2858 outrel.r_info = ELF64_R_INFO (sindx, r_type);
2862 sreloc = elf_section_data (input_section)->sreloc;
2866 loc = sreloc->contents;
2867 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2868 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2870 /* If this reloc is against an external symbol, we do
2871 not want to fiddle with the addend. Otherwise, we
2872 need to include the symbol value so that it becomes
2873 an addend for the dynamic reloc. */
2880 /* Relocations for tls literal pool entries. */
2881 case R_390_TLS_IE64:
2884 Elf_Internal_Rela outrel;
2888 outrel.r_offset = rel->r_offset
2889 + input_section->output_section->vma
2890 + input_section->output_offset;
2891 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2892 sreloc = elf_section_data (input_section)->sreloc;
2895 loc = sreloc->contents;
2896 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2897 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2901 case R_390_TLS_GD64:
2902 case R_390_TLS_GOTIE64:
2903 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2904 tls_type = GOT_UNKNOWN;
2905 if (h == NULL && local_got_offsets)
2906 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2909 tls_type = elf_s390_hash_entry(h)->tls_type;
2910 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2911 r_type = R_390_TLS_LE64;
2913 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2914 r_type = R_390_TLS_IE64;
2916 if (r_type == R_390_TLS_LE64)
2918 /* This relocation gets optimized away by the local exec
2919 access optimization. */
2920 BFD_ASSERT (! unresolved_reloc);
2921 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2922 contents + rel->r_offset);
2926 if (htab->elf.sgot == NULL)
2930 off = h->got.offset;
2933 if (local_got_offsets == NULL)
2936 off = local_got_offsets[r_symndx];
2945 Elf_Internal_Rela outrel;
2949 if (htab->elf.srelgot == NULL)
2952 outrel.r_offset = (htab->elf.sgot->output_section->vma
2953 + htab->elf.sgot->output_offset + off);
2955 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2956 if (r_type == R_390_TLS_GD64)
2957 dr_type = R_390_TLS_DTPMOD;
2959 dr_type = R_390_TLS_TPOFF;
2960 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2961 outrel.r_addend = relocation - dtpoff_base (info);
2963 outrel.r_addend = 0;
2964 outrel.r_info = ELF64_R_INFO (indx, dr_type);
2965 loc = htab->elf.srelgot->contents;
2966 loc += htab->elf.srelgot->reloc_count++
2967 * sizeof (Elf64_External_Rela);
2968 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2970 if (r_type == R_390_TLS_GD64)
2974 BFD_ASSERT (! unresolved_reloc);
2975 bfd_put_64 (output_bfd,
2976 relocation - dtpoff_base (info),
2977 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
2981 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
2982 outrel.r_offset += GOT_ENTRY_SIZE;
2983 outrel.r_addend = 0;
2984 htab->elf.srelgot->reloc_count++;
2985 loc += sizeof (Elf64_External_Rela);
2986 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2993 local_got_offsets[r_symndx] |= 1;
2996 if (off >= (bfd_vma) -2)
2998 if (r_type == ELF64_R_TYPE (rel->r_info))
3000 relocation = htab->elf.sgot->output_offset + off;
3001 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
3002 relocation += htab->elf.sgot->output_section->vma;
3003 unresolved_reloc = FALSE;
3007 bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
3008 contents + rel->r_offset);
3013 case R_390_TLS_GOTIE12:
3014 case R_390_TLS_GOTIE20:
3015 case R_390_TLS_IEENT:
3018 if (local_got_offsets == NULL)
3020 off = local_got_offsets[r_symndx];
3022 goto emit_tls_relocs;
3026 off = h->got.offset;
3027 tls_type = elf_s390_hash_entry(h)->tls_type;
3028 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
3029 goto emit_tls_relocs;
3032 if (htab->elf.sgot == NULL)
3035 BFD_ASSERT (! unresolved_reloc);
3036 bfd_put_64 (output_bfd, -tpoff (info, relocation),
3037 htab->elf.sgot->contents + off);
3038 relocation = htab->elf.sgot->output_offset + off;
3039 if (r_type == R_390_TLS_IEENT)
3040 relocation += htab->elf.sgot->output_section->vma;
3041 unresolved_reloc = FALSE;
3044 case R_390_TLS_LDM64:
3046 /* The literal pool entry this relocation refers to gets ignored
3047 by the optimized code of the local exec model. Do nothing
3048 and the value will turn out zero. */
3051 if (htab->elf.sgot == NULL)
3054 off = htab->tls_ldm_got.offset;
3059 Elf_Internal_Rela outrel;
3062 if (htab->elf.srelgot == NULL)
3065 outrel.r_offset = (htab->elf.sgot->output_section->vma
3066 + htab->elf.sgot->output_offset + off);
3068 bfd_put_64 (output_bfd, 0,
3069 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3070 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
3071 outrel.r_addend = 0;
3072 loc = htab->elf.srelgot->contents;
3073 loc += htab->elf.srelgot->reloc_count++
3074 * sizeof (Elf64_External_Rela);
3075 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3076 htab->tls_ldm_got.offset |= 1;
3078 relocation = htab->elf.sgot->output_offset + off;
3079 unresolved_reloc = FALSE;
3082 case R_390_TLS_LE64:
3083 if (info->shared && !info->pie)
3085 /* Linking a shared library with non-fpic code requires
3086 a R_390_TLS_TPOFF relocation. */
3087 Elf_Internal_Rela outrel;
3092 outrel.r_offset = rel->r_offset
3093 + input_section->output_section->vma
3094 + input_section->output_offset;
3095 if (h != NULL && h->dynindx != -1)
3099 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
3101 outrel.r_addend = relocation - dtpoff_base (info);
3103 outrel.r_addend = 0;
3104 sreloc = elf_section_data (input_section)->sreloc;
3107 loc = sreloc->contents;
3108 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
3109 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3113 BFD_ASSERT (! unresolved_reloc);
3114 bfd_put_64 (output_bfd, -tpoff (info, relocation),
3115 contents + rel->r_offset);
3119 case R_390_TLS_LDO64:
3120 if (info->shared || (input_section->flags & SEC_DEBUGGING))
3121 relocation -= dtpoff_base (info);
3123 /* When converting LDO to LE, we must negate. */
3124 relocation = -tpoff (info, relocation);
3127 /* Relocations for tls instructions. */
3128 case R_390_TLS_LOAD:
3129 case R_390_TLS_GDCALL:
3130 case R_390_TLS_LDCALL:
3131 tls_type = GOT_UNKNOWN;
3132 if (h == NULL && local_got_offsets)
3133 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3135 tls_type = elf_s390_hash_entry(h)->tls_type;
3137 if (tls_type == GOT_TLS_GD)
3140 if (r_type == R_390_TLS_LOAD)
3142 if (!info->shared && (h == NULL || h->dynindx == -1))
3144 /* IE->LE transition. Four valid cases:
3145 lg %rx,(0,%ry) -> sllg %rx,%ry,0
3146 lg %rx,(%ry,0) -> sllg %rx,%ry,0
3147 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
3148 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
3149 unsigned int insn0, insn1, ry;
3151 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3152 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3153 if (insn1 != 0x0004)
3154 invalid_tls_insn (input_bfd, input_section, rel);
3156 if ((insn0 & 0xff00f000) == 0xe3000000)
3157 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
3158 ry = (insn0 & 0x000f0000);
3159 else if ((insn0 & 0xff0f0000) == 0xe3000000)
3160 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
3161 ry = (insn0 & 0x0000f000) << 4;
3162 else if ((insn0 & 0xff00f000) == 0xe300c000)
3163 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
3164 ry = (insn0 & 0x000f0000);
3165 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
3166 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
3167 ry = (insn0 & 0x0000f000) << 4;
3169 invalid_tls_insn (input_bfd, input_section, rel);
3170 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
3172 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3173 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3176 else if (r_type == R_390_TLS_GDCALL)
3178 unsigned int insn0, insn1;
3180 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3181 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3182 if ((insn0 & 0xffff0000) != 0xc0e50000)
3183 invalid_tls_insn (input_bfd, input_section, rel);
3184 if (!info->shared && (h == NULL || h->dynindx == -1))
3186 /* GD->LE transition.
3187 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3193 /* GD->IE transition.
3194 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
3198 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3199 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3201 else if (r_type == R_390_TLS_LDCALL)
3205 unsigned int insn0, insn1;
3207 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3208 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3209 if ((insn0 & 0xffff0000) != 0xc0e50000)
3210 invalid_tls_insn (input_bfd, input_section, rel);
3211 /* LD->LE transition.
3212 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3215 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3216 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3225 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3226 because such sections are not SEC_ALLOC and thus ld.so will
3227 not process them. */
3228 if (unresolved_reloc
3229 && !((input_section->flags & SEC_DEBUGGING) != 0
3231 && _bfd_elf_section_offset (output_bfd, info, input_section,
3232 rel->r_offset) != (bfd_vma) -1)
3233 (*_bfd_error_handler)
3234 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3237 (long) rel->r_offset,
3239 h->root.root.string);
3243 /* When applying a 24 bit reloc we need to start one byte
3244 earlier. Otherwise the 32 bit get/put bfd operations might
3245 access a byte after the actual section. */
3246 if (r_type == R_390_PC24DBL
3247 || r_type == R_390_PLT24DBL)
3250 if (r_type == R_390_20
3251 || r_type == R_390_GOT20
3252 || r_type == R_390_GOTPLT20
3253 || r_type == R_390_TLS_GOTIE20)
3255 relocation += rel->r_addend;
3256 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3257 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3258 contents, rel->r_offset,
3262 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3263 contents, rel->r_offset,
3264 relocation, rel->r_addend);
3266 if (r != bfd_reloc_ok)
3271 name = h->root.root.string;
3274 name = bfd_elf_string_from_elf_section (input_bfd,
3275 symtab_hdr->sh_link,
3280 name = bfd_section_name (input_bfd, sec);
3283 if (r == bfd_reloc_overflow)
3286 if (! ((*info->callbacks->reloc_overflow)
3287 (info, (h ? &h->root : NULL), name, howto->name,
3288 (bfd_vma) 0, input_bfd, input_section,
3294 (*_bfd_error_handler)
3295 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3296 input_bfd, input_section,
3297 (long) rel->r_offset, name, (int) r);
3306 /* Generate the PLT slots together with the dynamic relocations needed
3307 for IFUNC symbols. */
3310 elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3311 struct bfd_link_info *info,
3312 struct elf_link_hash_entry *h,
3313 struct elf_s390_link_hash_table *htab,
3315 bfd_vma resolver_address)
3319 Elf_Internal_Rela rela;
3321 asection *plt, *gotplt, *relplt;
3323 if (htab->elf.iplt == NULL
3324 || htab->elf.igotplt == NULL
3325 || htab->elf.irelplt == NULL)
3328 /* Index of the PLT slot within iplt section. */
3329 plt_index = plt_offset / PLT_ENTRY_SIZE;
3330 plt = htab->elf.iplt;
3331 /* Offset into the igot.plt section. */
3332 got_offset = plt_index * GOT_ENTRY_SIZE;
3333 gotplt = htab->elf.igotplt;
3334 relplt = htab->elf.irelplt;
3336 /* Fill in the blueprint of a PLT. */
3337 memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
3340 /* Fixup the relative address to the GOT entry */
3341 bfd_put_32 (output_bfd,
3342 (gotplt->output_section->vma +
3343 gotplt->output_offset + got_offset
3344 - (plt->output_section->vma +
3345 plt->output_offset +
3347 plt->contents + plt_offset + 2);
3348 /* Fixup the relative branch to PLT 0 */
3349 bfd_put_32 (output_bfd, - (plt->output_offset +
3350 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3351 plt->contents + plt_offset + 24);
3352 /* Fixup offset into .rela.plt section. */
3353 bfd_put_32 (output_bfd, relplt->output_offset +
3354 plt_index * sizeof (Elf64_External_Rela),
3355 plt->contents + plt_offset + 28);
3357 /* Fill in the entry in the global offset table.
3358 Points to instruction after GOT offset. */
3359 bfd_put_64 (output_bfd,
3360 (plt->output_section->vma
3361 + plt->output_offset
3364 gotplt->contents + got_offset);
3366 /* Fill in the entry in the .rela.plt section. */
3367 rela.r_offset = (gotplt->output_section->vma
3368 + gotplt->output_offset
3373 || ((info->executable
3374 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3377 /* The symbol can be locally resolved. */
3378 rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
3379 rela.r_addend = resolver_address;
3383 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3387 loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
3388 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3392 /* Finish up dynamic symbol handling. We set the contents of various
3393 dynamic sections here. */
3396 elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3397 struct bfd_link_info *info,
3398 struct elf_link_hash_entry *h,
3399 Elf_Internal_Sym *sym)
3401 struct elf_s390_link_hash_table *htab;
3402 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
3404 htab = elf_s390_hash_table (info);
3408 if (h->plt.offset != (bfd_vma) -1)
3412 Elf_Internal_Rela rela;
3415 /* This symbol has an entry in the procedure linkage table. Set
3417 if (s390_is_ifunc_symbol_p (h))
3419 /* If we can resolve the IFUNC symbol locally we generate an
3421 elf_s390_finish_ifunc_symbol (output_bfd, info, h, htab, h->plt.offset,
3422 eh->ifunc_resolver_address +
3423 eh->ifunc_resolver_section->output_offset +
3424 eh->ifunc_resolver_section->output_section->vma);
3426 /* Fallthrough. Handling of explicit GOT slots of IFUNC
3427 symbols is below. */
3431 if (h->dynindx == -1
3432 || htab->elf.splt == NULL
3433 || htab->elf.sgotplt == NULL
3434 || htab->elf.srelplt == NULL)
3438 Current offset - size first entry / entry size. */
3439 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3441 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
3443 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3445 /* Fill in the blueprint of a PLT. */
3446 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
3449 /* Fixup the relative address to the GOT entry */
3450 bfd_put_32 (output_bfd,
3451 (htab->elf.sgotplt->output_section->vma +
3452 htab->elf.sgotplt->output_offset + got_offset
3453 - (htab->elf.splt->output_section->vma +
3454 htab->elf.splt->output_offset +
3456 htab->elf.splt->contents + h->plt.offset + 2);
3457 /* Fixup the relative branch to PLT 0 */
3458 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3459 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3460 htab->elf.splt->contents + h->plt.offset + 24);
3461 /* Fixup offset into .rela.plt section. */
3462 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3463 htab->elf.splt->contents + h->plt.offset + 28);
3465 /* Fill in the entry in the global offset table.
3466 Points to instruction after GOT offset. */
3467 bfd_put_64 (output_bfd,
3468 (htab->elf.splt->output_section->vma
3469 + htab->elf.splt->output_offset
3472 htab->elf.sgotplt->contents + got_offset);
3474 /* Fill in the entry in the .rela.plt section. */
3475 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3476 + htab->elf.sgotplt->output_offset
3478 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3480 loc = htab->elf.srelplt->contents + plt_index *
3481 sizeof (Elf64_External_Rela);
3482 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3484 if (!h->def_regular)
3486 /* Mark the symbol as undefined, rather than as defined in
3487 the .plt section. Leave the value alone. This is a clue
3488 for the dynamic linker, to make function pointer
3489 comparisons work between an application and shared
3491 sym->st_shndx = SHN_UNDEF;
3496 if (h->got.offset != (bfd_vma) -1
3497 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3498 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3499 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3501 Elf_Internal_Rela rela;
3504 /* This symbol has an entry in the global offset table. Set it
3506 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
3509 rela.r_offset = (htab->elf.sgot->output_section->vma
3510 + htab->elf.sgot->output_offset
3511 + (h->got.offset &~ (bfd_vma) 1));
3513 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3517 /* An explicit GOT slot usage needs GLOB_DAT. If the
3518 symbol references local the implicit got.iplt slot
3519 will be used and the IRELATIVE reloc has been created
3525 /* For non-shared objects explicit GOT slots must be
3526 filled with the PLT slot address for pointer
3527 equality reasons. */
3528 bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
3529 + htab->elf.iplt->output_offset
3531 htab->elf.sgot->contents + h->got.offset);
3535 else if (info->shared
3536 && SYMBOL_REFERENCES_LOCAL (info, h))
3538 /* If this is a static link, or it is a -Bsymbolic link and
3539 the symbol is defined locally or was forced to be local
3540 because of a version file, we just want to emit a
3541 RELATIVE reloc. The entry in the global offset table
3542 will already have been initialized in the
3543 relocate_section function. */
3544 if (!h->def_regular)
3546 BFD_ASSERT((h->got.offset & 1) != 0);
3547 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3548 rela.r_addend = (h->root.u.def.value
3549 + h->root.u.def.section->output_section->vma
3550 + h->root.u.def.section->output_offset);
3554 BFD_ASSERT((h->got.offset & 1) == 0);
3556 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
3557 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
3561 loc = htab->elf.srelgot->contents;
3562 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
3563 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3568 Elf_Internal_Rela rela;
3571 /* This symbols needs a copy reloc. Set it up. */
3573 if (h->dynindx == -1
3574 || (h->root.type != bfd_link_hash_defined
3575 && h->root.type != bfd_link_hash_defweak)
3576 || htab->srelbss == NULL)
3579 rela.r_offset = (h->root.u.def.value
3580 + h->root.u.def.section->output_section->vma
3581 + h->root.u.def.section->output_offset);
3582 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3584 loc = htab->srelbss->contents;
3585 loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
3586 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3589 /* Mark some specially defined symbols as absolute. */
3590 if (h == htab->elf.hdynamic
3591 || h == htab->elf.hgot
3592 || h == htab->elf.hplt)
3593 sym->st_shndx = SHN_ABS;
3598 /* Used to decide how to sort relocs in an optimal manner for the
3599 dynamic linker, before writing them out. */
3601 static enum elf_reloc_type_class
3602 elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3603 const asection *rel_sec ATTRIBUTE_UNUSED,
3604 const Elf_Internal_Rela *rela)
3606 switch ((int) ELF64_R_TYPE (rela->r_info))
3608 case R_390_RELATIVE:
3609 return reloc_class_relative;
3610 case R_390_JMP_SLOT:
3611 return reloc_class_plt;
3613 return reloc_class_copy;
3615 return reloc_class_normal;
3619 /* Finish up the dynamic sections. */
3622 elf_s390_finish_dynamic_sections (bfd *output_bfd,
3623 struct bfd_link_info *info)
3625 struct elf_s390_link_hash_table *htab;
3631 htab = elf_s390_hash_table (info);
3635 dynobj = htab->elf.dynobj;
3636 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3638 if (htab->elf.dynamic_sections_created)
3640 Elf64_External_Dyn *dyncon, *dynconend;
3642 if (sdyn == NULL || htab->elf.sgot == NULL)
3645 dyncon = (Elf64_External_Dyn *) sdyn->contents;
3646 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
3647 for (; dyncon < dynconend; dyncon++)
3649 Elf_Internal_Dyn dyn;
3652 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
3660 dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma;
3664 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
3668 s = htab->elf.srelplt->output_section;
3669 dyn.d_un.d_val = s->size;
3673 /* The procedure linkage table relocs (DT_JMPREL) should
3674 not be included in the overall relocs (DT_RELA).
3675 Therefore, we override the DT_RELASZ entry here to
3676 make it not include the JMPREL relocs. Since the
3677 linker script arranges for .rela.plt to follow all
3678 other relocation sections, we don't have to worry
3679 about changing the DT_RELA entry. */
3680 s = htab->elf.srelplt->output_section;
3681 dyn.d_un.d_val -= s->size;
3685 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
3688 /* Fill in the special first entry in the procedure linkage table. */
3689 if (htab->elf.splt && htab->elf.splt->size > 0)
3691 /* fill in blueprint for plt 0 entry */
3692 memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
3693 PLT_FIRST_ENTRY_SIZE);
3694 /* Fixup relative address to start of GOT */
3695 bfd_put_32 (output_bfd,
3696 (htab->elf.sgotplt->output_section->vma +
3697 htab->elf.sgotplt->output_offset
3698 - htab->elf.splt->output_section->vma - 6)/2,
3699 htab->elf.splt->contents + 8);
3701 if (elf_section_data (htab->elf.splt->output_section) != NULL)
3702 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
3706 if (htab->elf.sgotplt)
3708 /* Fill in the first three entries in the global offset table. */
3709 if (htab->elf.sgotplt->size > 0)
3711 bfd_put_64 (output_bfd,
3712 (sdyn == NULL ? (bfd_vma) 0
3713 : sdyn->output_section->vma + sdyn->output_offset),
3714 htab->elf.sgotplt->contents);
3715 /* One entry for shared object struct ptr. */
3716 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
3717 /* One entry for _dl_runtime_resolve. */
3718 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 12);
3721 elf_section_data (htab->elf.sgot->output_section)
3722 ->this_hdr.sh_entsize = 8;
3725 /* Finish dynamic symbol for local IFUNC symbols. */
3726 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
3728 struct plt_entry *local_plt;
3729 Elf_Internal_Sym *isym;
3730 Elf_Internal_Shdr *symtab_hdr;
3732 symtab_hdr = &elf_symtab_hdr (ibfd);
3734 local_plt = elf_s390_local_plt (ibfd);
3735 if (local_plt != NULL)
3736 for (i = 0; i < symtab_hdr->sh_info; i++)
3738 if (local_plt[i].plt.offset != (bfd_vma) -1)
3740 asection *sec = local_plt[i].sec;
3741 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3745 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3746 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3747 local_plt[i].plt.offset,
3749 + sec->output_section->vma
3750 + sec->output_offset);
3759 /* Return address for Ith PLT stub in section PLT, for relocation REL
3760 or (bfd_vma) -1 if it should not be included. */
3763 elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3764 const arelent *rel ATTRIBUTE_UNUSED)
3766 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3769 /* Merge backend specific data from an object file to the output
3770 object file when linking. */
3773 elf64_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3775 if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
3778 if (!elf_s390_merge_obj_attributes (ibfd, obfd))
3784 /* Why was the hash table entry size definition changed from
3785 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3786 this is the only reason for the s390_elf64_size_info structure. */
3788 const struct elf_size_info s390_elf64_size_info =
3790 sizeof (Elf64_External_Ehdr),
3791 sizeof (Elf64_External_Phdr),
3792 sizeof (Elf64_External_Shdr),
3793 sizeof (Elf64_External_Rel),
3794 sizeof (Elf64_External_Rela),
3795 sizeof (Elf64_External_Sym),
3796 sizeof (Elf64_External_Dyn),
3797 sizeof (Elf_External_Note),
3798 8, /* hash-table entry size. */
3799 1, /* internal relocations per external relocations. */
3800 64, /* arch_size. */
3801 3, /* log_file_align. */
3802 ELFCLASS64, EV_CURRENT,
3803 bfd_elf64_write_out_phdrs,
3804 bfd_elf64_write_shdrs_and_ehdr,
3805 bfd_elf64_checksum_contents,
3806 bfd_elf64_write_relocs,
3807 bfd_elf64_swap_symbol_in,
3808 bfd_elf64_swap_symbol_out,
3809 bfd_elf64_slurp_reloc_table,
3810 bfd_elf64_slurp_symbol_table,
3811 bfd_elf64_swap_dyn_in,
3812 bfd_elf64_swap_dyn_out,
3813 bfd_elf64_swap_reloc_in,
3814 bfd_elf64_swap_reloc_out,
3815 bfd_elf64_swap_reloca_in,
3816 bfd_elf64_swap_reloca_out
3819 #define TARGET_BIG_SYM s390_elf64_vec
3820 #define TARGET_BIG_NAME "elf64-s390"
3821 #define ELF_ARCH bfd_arch_s390
3822 #define ELF_TARGET_ID S390_ELF_DATA
3823 #define ELF_MACHINE_CODE EM_S390
3824 #define ELF_MACHINE_ALT1 EM_S390_OLD
3825 #define ELF_MAXPAGESIZE 0x1000
3827 #define elf_backend_size_info s390_elf64_size_info
3829 #define elf_backend_can_gc_sections 1
3830 #define elf_backend_can_refcount 1
3831 #define elf_backend_want_got_plt 1
3832 #define elf_backend_plt_readonly 1
3833 #define elf_backend_want_plt_sym 0
3834 #define elf_backend_got_header_size 24
3835 #define elf_backend_rela_normal 1
3837 #define elf_info_to_howto elf_s390_info_to_howto
3839 #define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3840 #define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3841 #define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3842 #define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
3843 #define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
3845 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3846 #define elf_backend_check_relocs elf_s390_check_relocs
3847 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3848 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3849 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3850 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3851 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3852 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3853 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3854 #define elf_backend_relocate_section elf_s390_relocate_section
3855 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3856 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3857 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
3858 #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
3859 #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
3861 #define bfd_elf64_mkobject elf_s390_mkobject
3862 #define elf_backend_object_p elf_s390_object_p
3864 /* Enable ELF64 archive functions. */
3865 #define bfd_elf64_archive_functions
3866 extern bfd_boolean bfd_elf64_archive_slurp_armap (bfd *);
3867 extern bfd_boolean bfd_elf64_archive_write_armap (bfd *, unsigned int, struct orl *, unsigned int, int);
3869 #define bfd_elf64_archive_slurp_extended_name_table _bfd_archive_coff_slurp_extended_name_table
3870 #define bfd_elf64_archive_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table
3871 #define bfd_elf64_archive_truncate_arname _bfd_archive_coff_truncate_arname
3872 #define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr
3873 #define bfd_elf64_archive_write_ar_hdr _bfd_archive_coff_write_ar_hdr
3874 #define bfd_elf64_archive_openr_next_archived_file _bfd_archive_coff_openr_next_archived_file
3875 #define bfd_elf64_archive_get_elt_at_index _bfd_archive_coff_get_elt_at_index
3876 #define bfd_elf64_archive_generic_stat_arch_elt _bfd_archive_coff_generic_stat_arch_elt
3877 #define bfd_elf64_archive_update_armap_timestamp _bfd_archive_coff_update_armap_timestamp
3879 #include "elf64-target.h"