1 /* IBM S/390-specific support for 64-bit ELF
2 Copyright (C) 2000-2015 Free Software Foundation, Inc.
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");
778 if (!bfd_link_pic (info))
779 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
781 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
782 || (!bfd_link_pic (info) && !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,
859 if (bfd_link_pic (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 (bfd_link_relocatable (info))
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:
1112 if (bfd_link_pic (info))
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 && bfd_link_pie (info))
1192 if (!bfd_link_pic (info))
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. */
1218 if (!bfd_link_pic (info))
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
1247 if ((bfd_link_pic (info)
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
1261 && !bfd_link_pic (info)
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 (bfd_link_relocatable (info))
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;
1465 case R_390_GOTOFF16:
1466 case R_390_GOTOFF32:
1467 case R_390_GOTOFF64:
1469 case R_390_GOTPCDBL:
1472 case R_390_TLS_GD64:
1473 case R_390_TLS_IE64:
1474 case R_390_TLS_GOTIE12:
1475 case R_390_TLS_GOTIE20:
1476 case R_390_TLS_GOTIE64:
1477 case R_390_TLS_IEENT:
1486 if (h->got.refcount > 0)
1487 h->got.refcount -= 1;
1489 else if (local_got_refcounts != NULL)
1491 if (local_got_refcounts[r_symndx] > 0)
1492 local_got_refcounts[r_symndx] -= 1;
1509 if (bfd_link_pic (info))
1513 case R_390_PLT12DBL:
1514 case R_390_PLT16DBL:
1515 case R_390_PLT24DBL:
1517 case R_390_PLT32DBL:
1519 case R_390_PLTOFF16:
1520 case R_390_PLTOFF32:
1521 case R_390_PLTOFF64:
1524 if (h->plt.refcount > 0)
1525 h->plt.refcount -= 1;
1529 case R_390_GOTPLT12:
1530 case R_390_GOTPLT16:
1531 case R_390_GOTPLT20:
1532 case R_390_GOTPLT32:
1533 case R_390_GOTPLT64:
1534 case R_390_GOTPLTENT:
1537 if (h->plt.refcount > 0)
1539 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1540 h->plt.refcount -= 1;
1543 else if (local_got_refcounts != NULL)
1545 if (local_got_refcounts[r_symndx] > 0)
1546 local_got_refcounts[r_symndx] -= 1;
1558 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1559 entry but we found we will not create any. Called when we find we will
1560 not have any PLT for this symbol, by for example
1561 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1562 or elf_s390_size_dynamic_sections if no dynamic sections will be
1563 created (we're only linking static objects). */
1566 elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
1568 if (h->elf.root.type == bfd_link_hash_warning)
1569 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1571 if (h->gotplt_refcount <= 0)
1574 /* We simply add the number of gotplt references to the number
1575 * of got references for this symbol. */
1576 h->elf.got.refcount += h->gotplt_refcount;
1577 h->gotplt_refcount = -1;
1580 /* Adjust a symbol defined by a dynamic object and referenced by a
1581 regular object. The current definition is in some section of the
1582 dynamic object, but we're not including those sections. We have to
1583 change the definition to something the rest of the link can
1587 elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1588 struct elf_link_hash_entry *h)
1590 struct elf_s390_link_hash_table *htab;
1593 /* STT_GNU_IFUNC symbol must go through PLT. */
1594 if (s390_is_ifunc_symbol_p (h))
1597 /* If this is a function, put it in the procedure linkage table. We
1598 will fill in the contents of the procedure linkage table later
1599 (although we could actually do it here). */
1600 if (h->type == STT_FUNC
1603 if (h->plt.refcount <= 0
1604 || SYMBOL_CALLS_LOCAL (info, h)
1605 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1606 && h->root.type == bfd_link_hash_undefweak))
1608 /* This case can occur if we saw a PLT32 reloc in an input
1609 file, but the symbol was never referred to by a dynamic
1610 object, or if all references were garbage collected. In
1611 such a case, we don't actually need to build a procedure
1612 linkage table, and we can just do a PC32 reloc instead. */
1613 h->plt.offset = (bfd_vma) -1;
1615 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1621 /* It's possible that we incorrectly decided a .plt reloc was
1622 needed for an R_390_PC32 reloc to a non-function sym in
1623 check_relocs. We can't decide accurately between function and
1624 non-function syms in check-relocs; Objects loaded later in
1625 the link may change h->type. So fix it now. */
1626 h->plt.offset = (bfd_vma) -1;
1628 /* If this is a weak symbol, and there is a real definition, the
1629 processor independent code will have arranged for us to see the
1630 real definition first, and we can just use the same value. */
1631 if (h->u.weakdef != NULL)
1633 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1634 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1635 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1636 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1637 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1638 h->non_got_ref = h->u.weakdef->non_got_ref;
1642 /* This is a reference to a symbol defined by a dynamic object which
1643 is not a function. */
1645 /* If we are creating a shared library, we must presume that the
1646 only references to the symbol are via the global offset table.
1647 For such cases we need not do anything here; the relocations will
1648 be handled correctly by relocate_section. */
1649 if (bfd_link_pic (info))
1652 /* If there are no references to this symbol that do not use the
1653 GOT, we don't need to generate a copy reloc. */
1654 if (!h->non_got_ref)
1657 /* If -z nocopyreloc was given, we won't generate them either. */
1658 if (info->nocopyreloc)
1664 if (ELIMINATE_COPY_RELOCS)
1666 struct elf_s390_link_hash_entry * eh;
1667 struct elf_dyn_relocs *p;
1669 eh = (struct elf_s390_link_hash_entry *) h;
1670 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1672 s = p->sec->output_section;
1673 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1677 /* If we didn't find any dynamic relocs in read-only sections, then
1678 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1686 /* We must allocate the symbol in our .dynbss section, which will
1687 become part of the .bss section of the executable. There will be
1688 an entry for this symbol in the .dynsym section. The dynamic
1689 object will contain position independent code, so all references
1690 from the dynamic object to this symbol will go through the global
1691 offset table. The dynamic linker will use the .dynsym entry to
1692 determine the address it must put in the global offset table, so
1693 both the dynamic object and the regular object will refer to the
1694 same memory location for the variable. */
1696 htab = elf_s390_hash_table (info);
1700 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1701 copy the initial value out of the dynamic object and into the
1702 runtime process image. */
1703 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
1705 htab->srelbss->size += sizeof (Elf64_External_Rela);
1711 return _bfd_elf_adjust_dynamic_copy (info, h, s);
1714 /* Allocate space in .plt, .got and associated reloc sections for
1718 allocate_dynrelocs (struct elf_link_hash_entry *h,
1721 struct bfd_link_info *info;
1722 struct elf_s390_link_hash_table *htab;
1723 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
1724 struct elf_dyn_relocs *p;
1726 if (h->root.type == bfd_link_hash_indirect)
1729 info = (struct bfd_link_info *) inf;
1730 htab = elf_s390_hash_table (info);
1734 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1735 here if it is defined and referenced in a non-shared object. */
1736 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1737 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))
1750 if (bfd_link_pic (info)
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. */
1767 if (! bfd_link_pic (info)
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
1803 && !bfd_link_pic (info)
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)
1849 && (bfd_link_pic (info)
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. */
1865 if (bfd_link_pic (info))
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 (bfd_link_executable (info) && !info->nointerp)
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;
2060 if (bfd_link_pic (info))
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 (bfd_link_executable (info))
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 (bfd_link_relocatable (info))
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,
2480 bfd_link_pic (info),
2482 || (bfd_link_pic (info)
2483 && SYMBOL_REFERENCES_LOCAL (info, h))
2484 || (ELF_ST_VISIBILITY (h->other)
2485 && h->root.type == bfd_link_hash_undefweak))
2487 /* This is actually a static link, or it is a
2488 -Bsymbolic link and the symbol is defined
2489 locally, or the symbol was forced to be local
2490 because of a version file. We must initialize
2491 this entry in the global offset table. Since the
2492 offset must always be a multiple of 2, we use the
2493 least significant bit to record whether we have
2494 initialized it already.
2496 When doing a dynamic link, we create a .rel.got
2497 relocation entry to initialize the value. This
2498 is done in the finish_dynamic_symbol routine. */
2503 bfd_put_64 (output_bfd, relocation,
2504 base_got->contents + off);
2509 && bfd_link_pic (info)
2510 && SYMBOL_REFERENCES_LOCAL (info, h))
2511 /* lgrl rx,sym@GOTENT -> larl rx, sym */
2512 && ((r_type == R_390_GOTENT
2513 && (bfd_get_16 (input_bfd,
2514 contents + rel->r_offset - 2)
2515 & 0xff0f) == 0xc408)
2516 /* lg rx, sym@GOT(r12) -> larl rx, sym */
2517 || (r_type == R_390_GOT20
2518 && (bfd_get_32 (input_bfd,
2519 contents + rel->r_offset - 2)
2520 & 0xff00f000) == 0xe300c000
2521 && bfd_get_8 (input_bfd,
2522 contents + rel->r_offset + 3) == 0x04)))
2525 unsigned short new_insn =
2526 (0xc000 | (bfd_get_8 (input_bfd,
2527 contents + rel->r_offset - 1) & 0xf0));
2528 bfd_put_16 (output_bfd, new_insn,
2529 contents + rel->r_offset - 2);
2530 r_type = R_390_PC32DBL;
2532 howto = elf_howto_table + r_type;
2533 relocation = h->root.u.def.value
2534 + h->root.u.def.section->output_section->vma
2535 + h->root.u.def.section->output_offset;
2540 unresolved_reloc = FALSE;
2544 if (local_got_offsets == NULL)
2547 off = local_got_offsets[r_symndx];
2549 /* The offset must always be a multiple of 8. We use
2550 the least significant bit to record whether we have
2551 already generated the necessary reloc. */
2556 bfd_put_64 (output_bfd, relocation,
2557 htab->elf.sgot->contents + off);
2559 if (bfd_link_pic (info))
2562 Elf_Internal_Rela outrel;
2565 s = htab->elf.srelgot;
2569 outrel.r_offset = (htab->elf.sgot->output_section->vma
2570 + htab->elf.sgot->output_offset
2572 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2573 outrel.r_addend = relocation;
2575 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2576 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2579 local_got_offsets[r_symndx] |= 1;
2583 if (off >= (bfd_vma) -2)
2586 relocation = base_got->output_offset + off;
2588 /* For @GOTENT the relocation is against the offset between
2589 the instruction and the symbols entry in the GOT and not
2590 between the start of the GOT and the symbols entry. We
2591 add the vma of the GOT to get the correct value. */
2592 if ( r_type == R_390_GOTENT
2593 || r_type == R_390_GOTPLTENT)
2594 relocation += base_got->output_section->vma;
2598 case R_390_GOTOFF16:
2599 case R_390_GOTOFF32:
2600 case R_390_GOTOFF64:
2601 /* Relocation is relative to the start of the global offset
2604 /* Note that sgot->output_offset is not involved in this
2605 calculation. We always want the start of .got. If we
2606 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2607 permitted by the ABI, we might have to change this
2609 relocation -= htab->elf.sgot->output_section->vma;
2613 case R_390_GOTPCDBL:
2614 /* Use global offset table as symbol value. */
2615 relocation = htab->elf.sgot->output_section->vma;
2616 unresolved_reloc = FALSE;
2619 case R_390_PLT12DBL:
2620 case R_390_PLT16DBL:
2621 case R_390_PLT24DBL:
2623 case R_390_PLT32DBL:
2625 /* Relocation is to the entry for this symbol in the
2626 procedure linkage table. */
2628 /* Resolve a PLT32 reloc against a local symbol directly,
2629 without using the procedure linkage table. */
2633 if (h->plt.offset == (bfd_vma) -1
2634 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
2636 /* We didn't make a PLT entry for this symbol. This
2637 happens when statically linking PIC code, or when
2638 using -Bsymbolic. */
2641 if (s390_is_ifunc_symbol_p (h))
2642 relocation = (htab->elf.iplt->output_section->vma
2643 + htab->elf.iplt->output_offset
2646 relocation = (htab->elf.splt->output_section->vma
2647 + htab->elf.splt->output_offset
2649 unresolved_reloc = FALSE;
2652 case R_390_PLTOFF16:
2653 case R_390_PLTOFF32:
2654 case R_390_PLTOFF64:
2655 /* Relocation is to the entry for this symbol in the
2656 procedure linkage table relative to the start of the GOT. */
2658 /* For local symbols or if we didn't make a PLT entry for
2659 this symbol resolve the symbol directly. */
2661 || h->plt.offset == (bfd_vma) -1
2662 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
2664 relocation -= htab->elf.sgot->output_section->vma;
2668 if (s390_is_ifunc_symbol_p (h))
2669 relocation = (htab->elf.iplt->output_section->vma
2670 + htab->elf.iplt->output_offset
2672 - htab->elf.sgot->output_section->vma);
2674 relocation = (htab->elf.splt->output_section->vma
2675 + htab->elf.splt->output_offset
2677 - htab->elf.sgot->output_section->vma);
2678 unresolved_reloc = FALSE;
2694 && s390_is_ifunc_symbol_p (h)
2697 if (!bfd_link_pic (info) || !h->non_got_ref)
2699 /* For a non-shared object STT_GNU_IFUNC symbol must
2701 relocation = (htab->elf.iplt->output_section->vma
2702 + htab->elf.iplt->output_offset
2708 /* For shared objects a runtime relocation is needed. */
2710 Elf_Internal_Rela outrel;
2713 /* Need a dynamic relocation to get the real function
2715 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2719 if (outrel.r_offset == (bfd_vma) -1
2720 || outrel.r_offset == (bfd_vma) -2)
2723 outrel.r_offset += (input_section->output_section->vma
2724 + input_section->output_offset);
2726 if (h->dynindx == -1
2728 || bfd_link_executable (info))
2730 /* This symbol is resolved locally. */
2731 outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
2732 outrel.r_addend = (h->root.u.def.value
2733 + h->root.u.def.section->output_section->vma
2734 + h->root.u.def.section->output_offset);
2738 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2739 outrel.r_addend = 0;
2742 sreloc = htab->elf.irelifunc;
2743 elf_append_rela (output_bfd, sreloc, &outrel);
2745 /* If this reloc is against an external symbol, we
2746 do not want to fiddle with the addend. Otherwise,
2747 we need to include the symbol value so that it
2748 becomes an addend for the dynamic reloc. For an
2749 internal symbol, we have updated addend. */
2754 if ((input_section->flags & SEC_ALLOC) == 0)
2757 if ((bfd_link_pic (info)
2759 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2760 || h->root.type != bfd_link_hash_undefweak)
2761 && ((r_type != R_390_PC16
2762 && r_type != R_390_PC12DBL
2763 && r_type != R_390_PC16DBL
2764 && r_type != R_390_PC24DBL
2765 && r_type != R_390_PC32
2766 && r_type != R_390_PC32DBL
2767 && r_type != R_390_PC64)
2768 || !SYMBOL_CALLS_LOCAL (info, h)))
2769 || (ELIMINATE_COPY_RELOCS
2770 && !bfd_link_pic (info)
2776 || h->root.type == bfd_link_hash_undefweak
2777 || h->root.type == bfd_link_hash_undefined)))
2779 Elf_Internal_Rela outrel;
2780 bfd_boolean skip, relocate;
2784 /* When generating a shared object, these relocations
2785 are copied into the output file to be resolved at run
2791 _bfd_elf_section_offset (output_bfd, info, input_section,
2793 if (outrel.r_offset == (bfd_vma) -1)
2795 else if (outrel.r_offset == (bfd_vma) -2)
2796 skip = TRUE, relocate = TRUE;
2798 outrel.r_offset += (input_section->output_section->vma
2799 + input_section->output_offset);
2802 memset (&outrel, 0, sizeof outrel);
2805 && (r_type == R_390_PC16
2806 || r_type == R_390_PC12DBL
2807 || r_type == R_390_PC16DBL
2808 || r_type == R_390_PC24DBL
2809 || r_type == R_390_PC32
2810 || r_type == R_390_PC32DBL
2811 || r_type == R_390_PC64
2812 || !bfd_link_pic (info)
2813 || !SYMBOLIC_BIND (info, h)
2814 || !h->def_regular))
2816 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2817 outrel.r_addend = rel->r_addend;
2821 /* This symbol is local, or marked to become local. */
2822 outrel.r_addend = relocation + rel->r_addend;
2823 if (r_type == R_390_64)
2826 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2832 if (bfd_is_abs_section (sec))
2834 else if (sec == NULL || sec->owner == NULL)
2836 bfd_set_error(bfd_error_bad_value);
2843 osec = sec->output_section;
2844 sindx = elf_section_data (osec)->dynindx;
2848 osec = htab->elf.text_index_section;
2849 sindx = elf_section_data (osec)->dynindx;
2851 BFD_ASSERT (sindx != 0);
2853 /* We are turning this relocation into one
2854 against a section symbol, so subtract out
2855 the output section's address but not the
2856 offset of the input section in the output
2858 outrel.r_addend -= osec->vma;
2860 outrel.r_info = ELF64_R_INFO (sindx, r_type);
2864 sreloc = elf_section_data (input_section)->sreloc;
2868 loc = sreloc->contents;
2869 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2870 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2872 /* If this reloc is against an external symbol, we do
2873 not want to fiddle with the addend. Otherwise, we
2874 need to include the symbol value so that it becomes
2875 an addend for the dynamic reloc. */
2882 /* Relocations for tls literal pool entries. */
2883 case R_390_TLS_IE64:
2884 if (bfd_link_pic (info))
2886 Elf_Internal_Rela outrel;
2890 outrel.r_offset = rel->r_offset
2891 + input_section->output_section->vma
2892 + input_section->output_offset;
2893 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2894 sreloc = elf_section_data (input_section)->sreloc;
2897 loc = sreloc->contents;
2898 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2899 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2903 case R_390_TLS_GD64:
2904 case R_390_TLS_GOTIE64:
2905 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2906 tls_type = GOT_UNKNOWN;
2907 if (h == NULL && local_got_offsets)
2908 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2911 tls_type = elf_s390_hash_entry(h)->tls_type;
2912 if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2913 r_type = R_390_TLS_LE64;
2915 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2916 r_type = R_390_TLS_IE64;
2918 if (r_type == R_390_TLS_LE64)
2920 /* This relocation gets optimized away by the local exec
2921 access optimization. */
2922 BFD_ASSERT (! unresolved_reloc);
2923 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2924 contents + rel->r_offset);
2928 if (htab->elf.sgot == NULL)
2932 off = h->got.offset;
2935 if (local_got_offsets == NULL)
2938 off = local_got_offsets[r_symndx];
2947 Elf_Internal_Rela outrel;
2951 if (htab->elf.srelgot == NULL)
2954 outrel.r_offset = (htab->elf.sgot->output_section->vma
2955 + htab->elf.sgot->output_offset + off);
2957 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2958 if (r_type == R_390_TLS_GD64)
2959 dr_type = R_390_TLS_DTPMOD;
2961 dr_type = R_390_TLS_TPOFF;
2962 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2963 outrel.r_addend = relocation - dtpoff_base (info);
2965 outrel.r_addend = 0;
2966 outrel.r_info = ELF64_R_INFO (indx, dr_type);
2967 loc = htab->elf.srelgot->contents;
2968 loc += htab->elf.srelgot->reloc_count++
2969 * sizeof (Elf64_External_Rela);
2970 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2972 if (r_type == R_390_TLS_GD64)
2976 BFD_ASSERT (! unresolved_reloc);
2977 bfd_put_64 (output_bfd,
2978 relocation - dtpoff_base (info),
2979 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
2983 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
2984 outrel.r_offset += GOT_ENTRY_SIZE;
2985 outrel.r_addend = 0;
2986 htab->elf.srelgot->reloc_count++;
2987 loc += sizeof (Elf64_External_Rela);
2988 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2995 local_got_offsets[r_symndx] |= 1;
2998 if (off >= (bfd_vma) -2)
3000 if (r_type == ELF64_R_TYPE (rel->r_info))
3002 relocation = htab->elf.sgot->output_offset + off;
3003 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
3004 relocation += htab->elf.sgot->output_section->vma;
3005 unresolved_reloc = FALSE;
3009 bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
3010 contents + rel->r_offset);
3015 case R_390_TLS_GOTIE12:
3016 case R_390_TLS_GOTIE20:
3017 case R_390_TLS_IEENT:
3020 if (local_got_offsets == NULL)
3022 off = local_got_offsets[r_symndx];
3023 if (bfd_link_pic (info))
3024 goto emit_tls_relocs;
3028 off = h->got.offset;
3029 tls_type = elf_s390_hash_entry(h)->tls_type;
3030 if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE)
3031 goto emit_tls_relocs;
3034 if (htab->elf.sgot == NULL)
3037 BFD_ASSERT (! unresolved_reloc);
3038 bfd_put_64 (output_bfd, -tpoff (info, relocation),
3039 htab->elf.sgot->contents + off);
3040 relocation = htab->elf.sgot->output_offset + off;
3041 if (r_type == R_390_TLS_IEENT)
3042 relocation += htab->elf.sgot->output_section->vma;
3043 unresolved_reloc = FALSE;
3046 case R_390_TLS_LDM64:
3047 if (! bfd_link_pic (info))
3048 /* The literal pool entry this relocation refers to gets ignored
3049 by the optimized code of the local exec model. Do nothing
3050 and the value will turn out zero. */
3053 if (htab->elf.sgot == NULL)
3056 off = htab->tls_ldm_got.offset;
3061 Elf_Internal_Rela outrel;
3064 if (htab->elf.srelgot == NULL)
3067 outrel.r_offset = (htab->elf.sgot->output_section->vma
3068 + htab->elf.sgot->output_offset + off);
3070 bfd_put_64 (output_bfd, 0,
3071 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3072 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
3073 outrel.r_addend = 0;
3074 loc = htab->elf.srelgot->contents;
3075 loc += htab->elf.srelgot->reloc_count++
3076 * sizeof (Elf64_External_Rela);
3077 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3078 htab->tls_ldm_got.offset |= 1;
3080 relocation = htab->elf.sgot->output_offset + off;
3081 unresolved_reloc = FALSE;
3084 case R_390_TLS_LE64:
3085 if (bfd_link_dll (info))
3087 /* Linking a shared library with non-fpic code requires
3088 a R_390_TLS_TPOFF relocation. */
3089 Elf_Internal_Rela outrel;
3094 outrel.r_offset = rel->r_offset
3095 + input_section->output_section->vma
3096 + input_section->output_offset;
3097 if (h != NULL && h->dynindx != -1)
3101 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
3103 outrel.r_addend = relocation - dtpoff_base (info);
3105 outrel.r_addend = 0;
3106 sreloc = elf_section_data (input_section)->sreloc;
3109 loc = sreloc->contents;
3110 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
3111 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3115 BFD_ASSERT (! unresolved_reloc);
3116 bfd_put_64 (output_bfd, -tpoff (info, relocation),
3117 contents + rel->r_offset);
3121 case R_390_TLS_LDO64:
3122 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
3123 relocation -= dtpoff_base (info);
3125 /* When converting LDO to LE, we must negate. */
3126 relocation = -tpoff (info, relocation);
3129 /* Relocations for tls instructions. */
3130 case R_390_TLS_LOAD:
3131 case R_390_TLS_GDCALL:
3132 case R_390_TLS_LDCALL:
3133 tls_type = GOT_UNKNOWN;
3134 if (h == NULL && local_got_offsets)
3135 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3137 tls_type = elf_s390_hash_entry(h)->tls_type;
3139 if (tls_type == GOT_TLS_GD)
3142 if (r_type == R_390_TLS_LOAD)
3144 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3146 /* IE->LE transition. Four valid cases:
3147 lg %rx,(0,%ry) -> sllg %rx,%ry,0
3148 lg %rx,(%ry,0) -> sllg %rx,%ry,0
3149 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
3150 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
3151 unsigned int insn0, insn1, ry;
3153 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3154 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3155 if (insn1 != 0x0004)
3156 invalid_tls_insn (input_bfd, input_section, rel);
3158 if ((insn0 & 0xff00f000) == 0xe3000000)
3159 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
3160 ry = (insn0 & 0x000f0000);
3161 else if ((insn0 & 0xff0f0000) == 0xe3000000)
3162 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
3163 ry = (insn0 & 0x0000f000) << 4;
3164 else if ((insn0 & 0xff00f000) == 0xe300c000)
3165 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
3166 ry = (insn0 & 0x000f0000);
3167 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
3168 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
3169 ry = (insn0 & 0x0000f000) << 4;
3171 invalid_tls_insn (input_bfd, input_section, rel);
3172 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
3174 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3175 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3178 else if (r_type == R_390_TLS_GDCALL)
3180 unsigned int insn0, insn1;
3182 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3183 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3184 if ((insn0 & 0xffff0000) != 0xc0e50000)
3185 invalid_tls_insn (input_bfd, input_section, rel);
3186 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3188 /* GD->LE transition.
3189 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3195 /* GD->IE transition.
3196 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
3200 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3201 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3203 else if (r_type == R_390_TLS_LDCALL)
3205 if (!bfd_link_pic (info))
3207 unsigned int insn0, insn1;
3209 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3210 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3211 if ((insn0 & 0xffff0000) != 0xc0e50000)
3212 invalid_tls_insn (input_bfd, input_section, rel);
3213 /* LD->LE transition.
3214 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3217 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3218 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3227 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3228 because such sections are not SEC_ALLOC and thus ld.so will
3229 not process them. */
3230 if (unresolved_reloc
3231 && !((input_section->flags & SEC_DEBUGGING) != 0
3233 && _bfd_elf_section_offset (output_bfd, info, input_section,
3234 rel->r_offset) != (bfd_vma) -1)
3235 (*_bfd_error_handler)
3236 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3239 (long) rel->r_offset,
3241 h->root.root.string);
3245 /* When applying a 24 bit reloc we need to start one byte
3246 earlier. Otherwise the 32 bit get/put bfd operations might
3247 access a byte after the actual section. */
3248 if (r_type == R_390_PC24DBL
3249 || r_type == R_390_PLT24DBL)
3252 if (r_type == R_390_20
3253 || r_type == R_390_GOT20
3254 || r_type == R_390_GOTPLT20
3255 || r_type == R_390_TLS_GOTIE20)
3257 relocation += rel->r_addend;
3258 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3259 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3260 contents, rel->r_offset,
3264 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3265 contents, rel->r_offset,
3266 relocation, rel->r_addend);
3268 if (r != bfd_reloc_ok)
3273 name = h->root.root.string;
3276 name = bfd_elf_string_from_elf_section (input_bfd,
3277 symtab_hdr->sh_link,
3282 name = bfd_section_name (input_bfd, sec);
3285 if (r == bfd_reloc_overflow)
3288 if (! ((*info->callbacks->reloc_overflow)
3289 (info, (h ? &h->root : NULL), name, howto->name,
3290 (bfd_vma) 0, input_bfd, input_section,
3296 (*_bfd_error_handler)
3297 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3298 input_bfd, input_section,
3299 (long) rel->r_offset, name, (int) r);
3308 /* Generate the PLT slots together with the dynamic relocations needed
3309 for IFUNC symbols. */
3312 elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3313 struct bfd_link_info *info,
3314 struct elf_link_hash_entry *h,
3315 struct elf_s390_link_hash_table *htab,
3317 bfd_vma resolver_address)
3321 Elf_Internal_Rela rela;
3323 asection *plt, *gotplt, *relplt;
3325 if (htab->elf.iplt == NULL
3326 || htab->elf.igotplt == NULL
3327 || htab->elf.irelplt == NULL)
3330 /* Index of the PLT slot within iplt section. */
3331 plt_index = plt_offset / PLT_ENTRY_SIZE;
3332 plt = htab->elf.iplt;
3333 /* Offset into the igot.plt section. */
3334 got_offset = plt_index * GOT_ENTRY_SIZE;
3335 gotplt = htab->elf.igotplt;
3336 relplt = htab->elf.irelplt;
3338 /* Fill in the blueprint of a PLT. */
3339 memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
3342 /* Fixup the relative address to the GOT entry */
3343 bfd_put_32 (output_bfd,
3344 (gotplt->output_section->vma +
3345 gotplt->output_offset + got_offset
3346 - (plt->output_section->vma +
3347 plt->output_offset +
3349 plt->contents + plt_offset + 2);
3350 /* Fixup the relative branch to PLT 0 */
3351 bfd_put_32 (output_bfd, - (plt->output_offset +
3352 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3353 plt->contents + plt_offset + 24);
3354 /* Fixup offset into .rela.plt section. */
3355 bfd_put_32 (output_bfd, relplt->output_offset +
3356 plt_index * sizeof (Elf64_External_Rela),
3357 plt->contents + plt_offset + 28);
3359 /* Fill in the entry in the global offset table.
3360 Points to instruction after GOT offset. */
3361 bfd_put_64 (output_bfd,
3362 (plt->output_section->vma
3363 + plt->output_offset
3366 gotplt->contents + got_offset);
3368 /* Fill in the entry in the .rela.plt section. */
3369 rela.r_offset = (gotplt->output_section->vma
3370 + gotplt->output_offset
3375 || ((bfd_link_executable (info)
3376 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3379 /* The symbol can be locally resolved. */
3380 rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
3381 rela.r_addend = resolver_address;
3385 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3389 loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
3390 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3394 /* Finish up dynamic symbol handling. We set the contents of various
3395 dynamic sections here. */
3398 elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3399 struct bfd_link_info *info,
3400 struct elf_link_hash_entry *h,
3401 Elf_Internal_Sym *sym)
3403 struct elf_s390_link_hash_table *htab;
3404 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
3406 htab = elf_s390_hash_table (info);
3410 if (h->plt.offset != (bfd_vma) -1)
3414 Elf_Internal_Rela rela;
3417 /* This symbol has an entry in the procedure linkage table. Set
3419 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
3421 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3422 htab, h->plt.offset,
3423 eh->ifunc_resolver_address +
3424 eh->ifunc_resolver_section->output_offset +
3425 eh->ifunc_resolver_section->output_section->vma);
3427 /* Do not return yet. Handling of explicit GOT slots of
3428 IFUNC symbols is below. */
3432 if (h->dynindx == -1
3433 || htab->elf.splt == NULL
3434 || htab->elf.sgotplt == NULL
3435 || htab->elf.srelplt == NULL)
3439 Current offset - size first entry / entry size. */
3440 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3442 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
3444 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3446 /* Fill in the blueprint of a PLT. */
3447 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
3450 /* Fixup the relative address to the GOT entry */
3451 bfd_put_32 (output_bfd,
3452 (htab->elf.sgotplt->output_section->vma +
3453 htab->elf.sgotplt->output_offset + got_offset
3454 - (htab->elf.splt->output_section->vma +
3455 htab->elf.splt->output_offset +
3457 htab->elf.splt->contents + h->plt.offset + 2);
3458 /* Fixup the relative branch to PLT 0 */
3459 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3460 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3461 htab->elf.splt->contents + h->plt.offset + 24);
3462 /* Fixup offset into .rela.plt section. */
3463 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3464 htab->elf.splt->contents + h->plt.offset + 28);
3466 /* Fill in the entry in the global offset table.
3467 Points to instruction after GOT offset. */
3468 bfd_put_64 (output_bfd,
3469 (htab->elf.splt->output_section->vma
3470 + htab->elf.splt->output_offset
3473 htab->elf.sgotplt->contents + got_offset);
3475 /* Fill in the entry in the .rela.plt section. */
3476 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3477 + htab->elf.sgotplt->output_offset
3479 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3481 loc = htab->elf.srelplt->contents + plt_index *
3482 sizeof (Elf64_External_Rela);
3483 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3485 if (!h->def_regular)
3487 /* Mark the symbol as undefined, rather than as defined in
3488 the .plt section. Leave the value alone. This is a clue
3489 for the dynamic linker, to make function pointer
3490 comparisons work between an application and shared
3492 sym->st_shndx = SHN_UNDEF;
3497 if (h->got.offset != (bfd_vma) -1
3498 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3499 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3500 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3502 Elf_Internal_Rela rela;
3505 /* This symbol has an entry in the global offset table. Set it
3507 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
3510 rela.r_offset = (htab->elf.sgot->output_section->vma
3511 + htab->elf.sgot->output_offset
3512 + (h->got.offset &~ (bfd_vma) 1));
3514 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3516 if (bfd_link_pic (info))
3518 /* An explicit GOT slot usage needs GLOB_DAT. If the
3519 symbol references local the implicit got.iplt slot
3520 will be used and the IRELATIVE reloc has been created
3526 /* For non-shared objects explicit GOT slots must be
3527 filled with the PLT slot address for pointer
3528 equality reasons. */
3529 bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
3530 + htab->elf.iplt->output_offset
3532 htab->elf.sgot->contents + h->got.offset);
3536 else if (bfd_link_pic (info)
3537 && SYMBOL_REFERENCES_LOCAL (info, h))
3539 /* If this is a static link, or it is a -Bsymbolic link and
3540 the symbol is defined locally or was forced to be local
3541 because of a version file, we just want to emit a
3542 RELATIVE reloc. The entry in the global offset table
3543 will already have been initialized in the
3544 relocate_section function. */
3545 if (!h->def_regular)
3547 BFD_ASSERT((h->got.offset & 1) != 0);
3548 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3549 rela.r_addend = (h->root.u.def.value
3550 + h->root.u.def.section->output_section->vma
3551 + h->root.u.def.section->output_offset);
3555 BFD_ASSERT((h->got.offset & 1) == 0);
3557 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
3558 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
3562 loc = htab->elf.srelgot->contents;
3563 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
3564 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3569 Elf_Internal_Rela rela;
3572 /* This symbols needs a copy reloc. Set it up. */
3574 if (h->dynindx == -1
3575 || (h->root.type != bfd_link_hash_defined
3576 && h->root.type != bfd_link_hash_defweak)
3577 || htab->srelbss == NULL)
3580 rela.r_offset = (h->root.u.def.value
3581 + h->root.u.def.section->output_section->vma
3582 + h->root.u.def.section->output_offset);
3583 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3585 loc = htab->srelbss->contents;
3586 loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
3587 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3590 /* Mark some specially defined symbols as absolute. */
3591 if (h == htab->elf.hdynamic
3592 || h == htab->elf.hgot
3593 || h == htab->elf.hplt)
3594 sym->st_shndx = SHN_ABS;
3599 /* Used to decide how to sort relocs in an optimal manner for the
3600 dynamic linker, before writing them out. */
3602 static enum elf_reloc_type_class
3603 elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3604 const asection *rel_sec ATTRIBUTE_UNUSED,
3605 const Elf_Internal_Rela *rela)
3607 switch ((int) ELF64_R_TYPE (rela->r_info))
3609 case R_390_RELATIVE:
3610 return reloc_class_relative;
3611 case R_390_JMP_SLOT:
3612 return reloc_class_plt;
3614 return reloc_class_copy;
3616 return reloc_class_normal;
3620 /* Finish up the dynamic sections. */
3623 elf_s390_finish_dynamic_sections (bfd *output_bfd,
3624 struct bfd_link_info *info)
3626 struct elf_s390_link_hash_table *htab;
3632 htab = elf_s390_hash_table (info);
3636 dynobj = htab->elf.dynobj;
3637 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3639 if (htab->elf.dynamic_sections_created)
3641 Elf64_External_Dyn *dyncon, *dynconend;
3643 if (sdyn == NULL || htab->elf.sgot == NULL)
3646 dyncon = (Elf64_External_Dyn *) sdyn->contents;
3647 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
3648 for (; dyncon < dynconend; dyncon++)
3650 Elf_Internal_Dyn dyn;
3653 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
3661 dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma;
3665 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
3669 s = htab->elf.srelplt->output_section;
3670 dyn.d_un.d_val = s->size;
3674 /* The procedure linkage table relocs (DT_JMPREL) should
3675 not be included in the overall relocs (DT_RELA).
3676 Therefore, we override the DT_RELASZ entry here to
3677 make it not include the JMPREL relocs. Since the
3678 linker script arranges for .rela.plt to follow all
3679 other relocation sections, we don't have to worry
3680 about changing the DT_RELA entry. */
3681 s = htab->elf.srelplt->output_section;
3682 dyn.d_un.d_val -= s->size;
3686 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
3689 /* Fill in the special first entry in the procedure linkage table. */
3690 if (htab->elf.splt && htab->elf.splt->size > 0)
3692 /* fill in blueprint for plt 0 entry */
3693 memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
3694 PLT_FIRST_ENTRY_SIZE);
3695 /* Fixup relative address to start of GOT */
3696 bfd_put_32 (output_bfd,
3697 (htab->elf.sgotplt->output_section->vma +
3698 htab->elf.sgotplt->output_offset
3699 - htab->elf.splt->output_section->vma - 6)/2,
3700 htab->elf.splt->contents + 8);
3702 if (elf_section_data (htab->elf.splt->output_section) != NULL)
3703 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
3707 if (htab->elf.sgotplt)
3709 /* Fill in the first three entries in the global offset table. */
3710 if (htab->elf.sgotplt->size > 0)
3712 bfd_put_64 (output_bfd,
3713 (sdyn == NULL ? (bfd_vma) 0
3714 : sdyn->output_section->vma + sdyn->output_offset),
3715 htab->elf.sgotplt->contents);
3716 /* One entry for shared object struct ptr. */
3717 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
3718 /* One entry for _dl_runtime_resolve. */
3719 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 12);
3722 elf_section_data (htab->elf.sgot->output_section)
3723 ->this_hdr.sh_entsize = 8;
3726 /* Finish dynamic symbol for local IFUNC symbols. */
3727 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
3729 struct plt_entry *local_plt;
3730 Elf_Internal_Sym *isym;
3731 Elf_Internal_Shdr *symtab_hdr;
3733 symtab_hdr = &elf_symtab_hdr (ibfd);
3735 local_plt = elf_s390_local_plt (ibfd);
3736 if (local_plt != NULL)
3737 for (i = 0; i < symtab_hdr->sh_info; i++)
3739 if (local_plt[i].plt.offset != (bfd_vma) -1)
3741 asection *sec = local_plt[i].sec;
3742 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3746 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3747 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3748 local_plt[i].plt.offset,
3750 + sec->output_section->vma
3751 + sec->output_offset);
3760 /* Return address for Ith PLT stub in section PLT, for relocation REL
3761 or (bfd_vma) -1 if it should not be included. */
3764 elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3765 const arelent *rel ATTRIBUTE_UNUSED)
3767 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3770 /* Merge backend specific data from an object file to the output
3771 object file when linking. */
3774 elf64_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3776 if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
3779 if (!elf_s390_merge_obj_attributes (ibfd, obfd))
3785 /* Why was the hash table entry size definition changed from
3786 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3787 this is the only reason for the s390_elf64_size_info structure. */
3789 const struct elf_size_info s390_elf64_size_info =
3791 sizeof (Elf64_External_Ehdr),
3792 sizeof (Elf64_External_Phdr),
3793 sizeof (Elf64_External_Shdr),
3794 sizeof (Elf64_External_Rel),
3795 sizeof (Elf64_External_Rela),
3796 sizeof (Elf64_External_Sym),
3797 sizeof (Elf64_External_Dyn),
3798 sizeof (Elf_External_Note),
3799 8, /* hash-table entry size. */
3800 1, /* internal relocations per external relocations. */
3801 64, /* arch_size. */
3802 3, /* log_file_align. */
3803 ELFCLASS64, EV_CURRENT,
3804 bfd_elf64_write_out_phdrs,
3805 bfd_elf64_write_shdrs_and_ehdr,
3806 bfd_elf64_checksum_contents,
3807 bfd_elf64_write_relocs,
3808 bfd_elf64_swap_symbol_in,
3809 bfd_elf64_swap_symbol_out,
3810 bfd_elf64_slurp_reloc_table,
3811 bfd_elf64_slurp_symbol_table,
3812 bfd_elf64_swap_dyn_in,
3813 bfd_elf64_swap_dyn_out,
3814 bfd_elf64_swap_reloc_in,
3815 bfd_elf64_swap_reloc_out,
3816 bfd_elf64_swap_reloca_in,
3817 bfd_elf64_swap_reloca_out
3820 #define TARGET_BIG_SYM s390_elf64_vec
3821 #define TARGET_BIG_NAME "elf64-s390"
3822 #define ELF_ARCH bfd_arch_s390
3823 #define ELF_TARGET_ID S390_ELF_DATA
3824 #define ELF_MACHINE_CODE EM_S390
3825 #define ELF_MACHINE_ALT1 EM_S390_OLD
3826 #define ELF_MAXPAGESIZE 0x1000
3828 #define elf_backend_size_info s390_elf64_size_info
3830 #define elf_backend_can_gc_sections 1
3831 #define elf_backend_can_refcount 1
3832 #define elf_backend_want_got_plt 1
3833 #define elf_backend_plt_readonly 1
3834 #define elf_backend_want_plt_sym 0
3835 #define elf_backend_got_header_size 24
3836 #define elf_backend_rela_normal 1
3838 #define elf_info_to_howto elf_s390_info_to_howto
3840 #define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3841 #define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3842 #define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3843 #define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
3844 #define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
3846 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3847 #define elf_backend_check_relocs elf_s390_check_relocs
3848 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3849 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3850 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3851 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3852 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3853 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3854 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3855 #define elf_backend_relocate_section elf_s390_relocate_section
3856 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3857 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3858 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
3859 #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
3860 #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
3862 #define bfd_elf64_mkobject elf_s390_mkobject
3863 #define elf_backend_object_p elf_s390_object_p
3865 /* Enable ELF64 archive functions. */
3866 #define bfd_elf64_archive_functions
3867 extern bfd_boolean bfd_elf64_archive_slurp_armap (bfd *);
3868 extern bfd_boolean bfd_elf64_archive_write_armap (bfd *, unsigned int, struct orl *, unsigned int, int);
3870 #define bfd_elf64_archive_slurp_extended_name_table _bfd_archive_coff_slurp_extended_name_table
3871 #define bfd_elf64_archive_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table
3872 #define bfd_elf64_archive_truncate_arname _bfd_archive_coff_truncate_arname
3873 #define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr
3874 #define bfd_elf64_archive_write_ar_hdr _bfd_archive_coff_write_ar_hdr
3875 #define bfd_elf64_archive_openr_next_archived_file _bfd_archive_coff_openr_next_archived_file
3876 #define bfd_elf64_archive_get_elt_at_index _bfd_archive_coff_get_elt_at_index
3877 #define bfd_elf64_archive_generic_stat_arch_elt _bfd_archive_coff_generic_stat_arch_elt
3878 #define bfd_elf64_archive_update_armap_timestamp _bfd_archive_coff_update_armap_timestamp
3880 #include "elf64-target.h"