1 /* IBM S/390-specific support for 64-bit ELF
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
3 2010, 2011, 2012 Free Software Foundation, Inc.
4 Contributed Martin Schwidefsky (schwidefsky@de.ibm.com).
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
30 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
31 from smaller values. Start with zero, widen, *then* decrement. */
32 #define MINUS_ONE (((bfd_vma)0) - 1)
34 static bfd_reloc_status_type
35 s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
36 asection *, bfd *, char **);
37 static bfd_reloc_status_type
38 s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
39 asection *, bfd *, char **);
41 /* The relocation "howto" table. */
42 static reloc_howto_type elf_howto_table[] =
44 HOWTO (R_390_NONE, /* type */
46 0, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
48 FALSE, /* pc_relative */
50 complain_overflow_dont, /* complain_on_overflow */
51 bfd_elf_generic_reloc, /* special_function */
52 "R_390_NONE", /* name */
53 FALSE, /* partial_inplace */
56 FALSE), /* pcrel_offset */
58 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
59 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
60 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
61 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
62 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
63 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
64 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
65 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
66 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
67 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
68 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
69 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
70 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
71 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
72 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
73 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
74 HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
75 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE),
76 HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
77 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE),
78 HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
79 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE),
80 HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
81 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE),
82 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
83 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE),
84 HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
85 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE),
86 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
87 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
88 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
89 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
90 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
91 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
92 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
93 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
94 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
95 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
96 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
97 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
98 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
99 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
100 HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
101 bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE),
102 HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
103 bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
104 HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
105 bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
106 HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
107 bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
108 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
109 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE),
110 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
111 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
112 HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
113 bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE),
114 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
115 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
116 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
117 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
118 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
119 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
120 HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
121 bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE),
122 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
123 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE),
124 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
125 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
126 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
128 HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
129 bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE),
130 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
131 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
132 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
133 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
134 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
135 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
136 EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */
137 HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
139 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
140 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
141 EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */
142 HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
143 bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
144 EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */
145 HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
147 EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */
148 HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
150 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
152 EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */
153 HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
154 bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
155 EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */
156 HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
157 bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
158 HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
159 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
160 HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
161 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
162 HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
164 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
165 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
166 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
167 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
168 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
169 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
170 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
171 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
172 HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
173 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE),
174 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
175 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
176 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
177 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
178 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
179 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
180 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
181 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
184 /* GNU extension to record C++ vtable hierarchy. */
185 static reloc_howto_type elf64_s390_vtinherit_howto =
186 HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
187 static reloc_howto_type elf64_s390_vtentry_howto =
188 HOWTO (R_390_GNU_VTENTRY, 0,4,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
190 static reloc_howto_type *
191 elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
192 bfd_reloc_code_real_type code)
197 return &elf_howto_table[(int) R_390_NONE];
199 return &elf_howto_table[(int) R_390_8];
200 case BFD_RELOC_390_12:
201 return &elf_howto_table[(int) R_390_12];
203 return &elf_howto_table[(int) R_390_16];
205 return &elf_howto_table[(int) R_390_32];
207 return &elf_howto_table[(int) R_390_32];
208 case BFD_RELOC_32_PCREL:
209 return &elf_howto_table[(int) R_390_PC32];
210 case BFD_RELOC_390_GOT12:
211 return &elf_howto_table[(int) R_390_GOT12];
212 case BFD_RELOC_32_GOT_PCREL:
213 return &elf_howto_table[(int) R_390_GOT32];
214 case BFD_RELOC_390_PLT32:
215 return &elf_howto_table[(int) R_390_PLT32];
216 case BFD_RELOC_390_COPY:
217 return &elf_howto_table[(int) R_390_COPY];
218 case BFD_RELOC_390_GLOB_DAT:
219 return &elf_howto_table[(int) R_390_GLOB_DAT];
220 case BFD_RELOC_390_JMP_SLOT:
221 return &elf_howto_table[(int) R_390_JMP_SLOT];
222 case BFD_RELOC_390_RELATIVE:
223 return &elf_howto_table[(int) R_390_RELATIVE];
224 case BFD_RELOC_32_GOTOFF:
225 return &elf_howto_table[(int) R_390_GOTOFF32];
226 case BFD_RELOC_390_GOTPC:
227 return &elf_howto_table[(int) R_390_GOTPC];
228 case BFD_RELOC_390_GOT16:
229 return &elf_howto_table[(int) R_390_GOT16];
230 case BFD_RELOC_16_PCREL:
231 return &elf_howto_table[(int) R_390_PC16];
232 case BFD_RELOC_390_PC12DBL:
233 return &elf_howto_table[(int) R_390_PC12DBL];
234 case BFD_RELOC_390_PLT12DBL:
235 return &elf_howto_table[(int) R_390_PLT12DBL];
236 case BFD_RELOC_390_PC16DBL:
237 return &elf_howto_table[(int) R_390_PC16DBL];
238 case BFD_RELOC_390_PLT16DBL:
239 return &elf_howto_table[(int) R_390_PLT16DBL];
240 case BFD_RELOC_390_PC24DBL:
241 return &elf_howto_table[(int) R_390_PC24DBL];
242 case BFD_RELOC_390_PLT24DBL:
243 return &elf_howto_table[(int) R_390_PLT24DBL];
244 case BFD_RELOC_390_PC32DBL:
245 return &elf_howto_table[(int) R_390_PC32DBL];
246 case BFD_RELOC_390_PLT32DBL:
247 return &elf_howto_table[(int) R_390_PLT32DBL];
248 case BFD_RELOC_390_GOTPCDBL:
249 return &elf_howto_table[(int) R_390_GOTPCDBL];
251 return &elf_howto_table[(int) R_390_64];
252 case BFD_RELOC_64_PCREL:
253 return &elf_howto_table[(int) R_390_PC64];
254 case BFD_RELOC_390_GOT64:
255 return &elf_howto_table[(int) R_390_GOT64];
256 case BFD_RELOC_390_PLT64:
257 return &elf_howto_table[(int) R_390_PLT64];
258 case BFD_RELOC_390_GOTENT:
259 return &elf_howto_table[(int) R_390_GOTENT];
260 case BFD_RELOC_16_GOTOFF:
261 return &elf_howto_table[(int) R_390_GOTOFF16];
262 case BFD_RELOC_390_GOTOFF64:
263 return &elf_howto_table[(int) R_390_GOTOFF64];
264 case BFD_RELOC_390_GOTPLT12:
265 return &elf_howto_table[(int) R_390_GOTPLT12];
266 case BFD_RELOC_390_GOTPLT16:
267 return &elf_howto_table[(int) R_390_GOTPLT16];
268 case BFD_RELOC_390_GOTPLT32:
269 return &elf_howto_table[(int) R_390_GOTPLT32];
270 case BFD_RELOC_390_GOTPLT64:
271 return &elf_howto_table[(int) R_390_GOTPLT64];
272 case BFD_RELOC_390_GOTPLTENT:
273 return &elf_howto_table[(int) R_390_GOTPLTENT];
274 case BFD_RELOC_390_PLTOFF16:
275 return &elf_howto_table[(int) R_390_PLTOFF16];
276 case BFD_RELOC_390_PLTOFF32:
277 return &elf_howto_table[(int) R_390_PLTOFF32];
278 case BFD_RELOC_390_PLTOFF64:
279 return &elf_howto_table[(int) R_390_PLTOFF64];
280 case BFD_RELOC_390_TLS_LOAD:
281 return &elf_howto_table[(int) R_390_TLS_LOAD];
282 case BFD_RELOC_390_TLS_GDCALL:
283 return &elf_howto_table[(int) R_390_TLS_GDCALL];
284 case BFD_RELOC_390_TLS_LDCALL:
285 return &elf_howto_table[(int) R_390_TLS_LDCALL];
286 case BFD_RELOC_390_TLS_GD64:
287 return &elf_howto_table[(int) R_390_TLS_GD64];
288 case BFD_RELOC_390_TLS_GOTIE12:
289 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
290 case BFD_RELOC_390_TLS_GOTIE64:
291 return &elf_howto_table[(int) R_390_TLS_GOTIE64];
292 case BFD_RELOC_390_TLS_LDM64:
293 return &elf_howto_table[(int) R_390_TLS_LDM64];
294 case BFD_RELOC_390_TLS_IE64:
295 return &elf_howto_table[(int) R_390_TLS_IE64];
296 case BFD_RELOC_390_TLS_IEENT:
297 return &elf_howto_table[(int) R_390_TLS_IEENT];
298 case BFD_RELOC_390_TLS_LE64:
299 return &elf_howto_table[(int) R_390_TLS_LE64];
300 case BFD_RELOC_390_TLS_LDO64:
301 return &elf_howto_table[(int) R_390_TLS_LDO64];
302 case BFD_RELOC_390_TLS_DTPMOD:
303 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
304 case BFD_RELOC_390_TLS_DTPOFF:
305 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
306 case BFD_RELOC_390_TLS_TPOFF:
307 return &elf_howto_table[(int) R_390_TLS_TPOFF];
308 case BFD_RELOC_390_20:
309 return &elf_howto_table[(int) R_390_20];
310 case BFD_RELOC_390_GOT20:
311 return &elf_howto_table[(int) R_390_GOT20];
312 case BFD_RELOC_390_GOTPLT20:
313 return &elf_howto_table[(int) R_390_GOTPLT20];
314 case BFD_RELOC_390_TLS_GOTIE20:
315 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
316 case BFD_RELOC_390_IRELATIVE:
317 return &elf_howto_table[(int) R_390_IRELATIVE];
318 case BFD_RELOC_VTABLE_INHERIT:
319 return &elf64_s390_vtinherit_howto;
320 case BFD_RELOC_VTABLE_ENTRY:
321 return &elf64_s390_vtentry_howto;
328 static reloc_howto_type *
329 elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
335 i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
337 if (elf_howto_table[i].name != NULL
338 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
339 return &elf_howto_table[i];
341 if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
342 return &elf64_s390_vtinherit_howto;
343 if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
344 return &elf64_s390_vtentry_howto;
349 /* We need to use ELF64_R_TYPE so we have our own copy of this function,
350 and elf64-s390.c has its own copy. */
353 elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
355 Elf_Internal_Rela *dst)
357 unsigned int r_type = ELF64_R_TYPE(dst->r_info);
360 case R_390_GNU_VTINHERIT:
361 cache_ptr->howto = &elf64_s390_vtinherit_howto;
364 case R_390_GNU_VTENTRY:
365 cache_ptr->howto = &elf64_s390_vtentry_howto;
369 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
371 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
375 cache_ptr->howto = &elf_howto_table[r_type];
379 /* A relocation function which doesn't do anything. */
380 static bfd_reloc_status_type
381 s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
382 arelent *reloc_entry,
383 asymbol *symbol ATTRIBUTE_UNUSED,
384 void * data ATTRIBUTE_UNUSED,
385 asection *input_section,
387 char **error_message ATTRIBUTE_UNUSED)
390 reloc_entry->address += input_section->output_offset;
394 /* Handle the large displacement relocs. */
395 static bfd_reloc_status_type
396 s390_elf_ldisp_reloc (bfd *abfd,
397 arelent *reloc_entry,
400 asection *input_section,
402 char **error_message ATTRIBUTE_UNUSED)
404 reloc_howto_type *howto = reloc_entry->howto;
408 if (output_bfd != (bfd *) NULL
409 && (symbol->flags & BSF_SECTION_SYM) == 0
410 && (! howto->partial_inplace
411 || reloc_entry->addend == 0))
413 reloc_entry->address += input_section->output_offset;
416 if (output_bfd != NULL)
417 return bfd_reloc_continue;
419 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
420 return bfd_reloc_outofrange;
422 relocation = (symbol->value
423 + symbol->section->output_section->vma
424 + symbol->section->output_offset);
425 relocation += reloc_entry->addend;
426 if (howto->pc_relative)
428 relocation -= (input_section->output_section->vma
429 + input_section->output_offset);
430 relocation -= reloc_entry->address;
433 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
434 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
435 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
437 if ((bfd_signed_vma) relocation < - 0x80000
438 || (bfd_signed_vma) relocation > 0x7ffff)
439 return bfd_reloc_overflow;
445 elf_s390_is_local_label_name (bfd *abfd, const char *name)
447 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
450 return _bfd_elf_is_local_label_name (abfd, name);
453 /* Functions for the 390 ELF linker. */
455 /* The name of the dynamic interpreter. This is put in the .interp
458 #define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
460 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
461 copying dynamic variables from a shared lib into an app's dynbss
462 section, and instead use a dynamic relocation to point into the
464 #define ELIMINATE_COPY_RELOCS 1
466 /* The size in bytes of the first entry in the procedure linkage table. */
467 #define PLT_FIRST_ENTRY_SIZE 32
468 /* The size in bytes of an entry in the procedure linkage table. */
469 #define PLT_ENTRY_SIZE 32
471 #define GOT_ENTRY_SIZE 8
473 #define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela)
475 /* The first three entries in a procedure linkage table are reserved,
476 and the initial contents are unimportant (we zero them out).
477 Subsequent entries look like this. See the SVR4 ABI 386
478 supplement to see how this works. */
480 /* For the s390, simple addr offset can only be 0 - 4096.
481 To use the full 16777216 TB address space, several instructions
482 are needed to load an address in a register and execute
483 a branch( or just saving the address)
485 Furthermore, only r 0 and 1 are free to use!!! */
487 /* The first 3 words in the GOT are then reserved.
488 Word 0 is the address of the dynamic table.
489 Word 1 is a pointer to a structure describing the object
490 Word 2 is used to point to the loader entry address.
492 The code for PLT entries looks like this:
494 The GOT holds the address in the PLT to be executed.
495 The loader then gets:
496 24(15) = Pointer to the structure describing the object.
497 28(15) = Offset in symbol table
498 The loader must then find the module where the function is
499 and insert the address in the GOT.
501 PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
502 LG 1,0(1) # 6 bytes Load address from GOT in r1
503 BCR 15,1 # 2 bytes Jump to address
504 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
505 LGF 1,12(1) # 6 bytes Load offset in symbl table in r1
506 BRCL 15,-x # 6 bytes Jump to start of PLT
507 .long ? # 4 bytes offset into .rela.plt
509 Total = 32 bytes per PLT entry
510 Fixup at offset 2: relative address to GOT entry
511 Fixup at offset 22: relative branch to PLT0
512 Fixup at offset 28: 32 bit offset into .rela.plt
514 A 32 bit offset into the symbol table is enough. It allows for
515 .rela.plt sections up to a size of 2 gigabyte. A single dynamic
516 object (the main program, any shared library) is limited to 4GB in
517 size. Having a .rela.plt of 2GB would already make the .plt
518 section bigger than 8GB. */
520 static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] =
522 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
523 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */
524 0x07, 0xf1, /* br %r1 */
525 0x0d, 0x10, /* basr %r1,%r0 */
526 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */
527 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */
528 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */
531 /* The first PLT entry pushes the offset into the symbol table
532 from R1 onto the stack at 56(15) and the loader object info
533 at 48(15), loads the loader address in R1 and jumps to it. */
535 /* The first entry in the PLT:
538 STG 1,56(15) # r1 contains the offset into the symbol table
539 LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
540 MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
541 LG 1,16(1) # get entry address of loader
542 BCR 15,1 # jump to loader
544 Fixup at offset 8: relative address to start of GOT. */
546 static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] =
548 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */
549 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
550 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */
551 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */
552 0x07, 0xf1, /* br %r1 */
553 0x07, 0x00, /* nopr %r0 */
554 0x07, 0x00, /* nopr %r0 */
555 0x07, 0x00 /* nopr %r0 */
559 /* s390 ELF linker hash entry. */
561 struct elf_s390_link_hash_entry
563 struct elf_link_hash_entry elf;
565 /* Track dynamic relocs copied for this symbol. */
566 struct elf_dyn_relocs *dyn_relocs;
568 /* Number of GOTPLT references for a function. */
569 bfd_signed_vma gotplt_refcount;
571 #define GOT_UNKNOWN 0
575 #define GOT_TLS_IE_NLT 3
576 unsigned char tls_type;
578 /* For pointer equality reasons we might need to change the symbol
579 type from STT_GNU_IFUNC to STT_FUNC together with its value and
580 section entry. So after alloc_dynrelocs only these values should
581 be used. In order to check whether a symbol is IFUNC use
582 s390_is_ifunc_symbol_p. */
583 bfd_vma ifunc_resolver_address;
584 asection *ifunc_resolver_section;
587 #define elf_s390_hash_entry(ent) \
588 ((struct elf_s390_link_hash_entry *)(ent))
590 /* This structure represents an entry in the local PLT list needed for
591 local IFUNC symbols. */
594 /* The section of the local symbol.
595 Set in relocate_section and used in finish_dynamic_sections. */
600 bfd_signed_vma refcount;
605 /* NOTE: Keep this structure in sync with
606 the one declared in elf32-s390.c. */
607 struct elf_s390_obj_tdata
609 struct elf_obj_tdata root;
611 /* A local PLT is needed for ifunc symbols. */
612 struct plt_entry *local_plt;
614 /* TLS type for each local got entry. */
615 char *local_got_tls_type;
618 #define elf_s390_tdata(abfd) \
619 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
621 #define elf_s390_local_plt(abfd) \
622 (elf_s390_tdata (abfd)->local_plt)
624 #define elf_s390_local_got_tls_type(abfd) \
625 (elf_s390_tdata (abfd)->local_got_tls_type)
627 #define is_s390_elf(bfd) \
628 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
629 && elf_tdata (bfd) != NULL \
630 && elf_object_id (bfd) == S390_ELF_DATA)
633 elf_s390_mkobject (bfd *abfd)
635 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
640 elf_s390_object_p (bfd *abfd)
642 /* Set the right machine number for an s390 elf32 file. */
643 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
646 /* s390 ELF linker hash table. */
648 struct elf_s390_link_hash_table
650 struct elf_link_hash_table elf;
652 /* Short-cuts to get to dynamic linker sections. */
658 bfd_signed_vma refcount;
662 /* Small local sym cache. */
663 struct sym_cache sym_cache;
666 /* Get the s390 ELF linker hash table from a link_info structure. */
668 #define elf_s390_hash_table(p) \
669 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
670 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
673 #include "elf-s390-common.c"
675 /* Create an entry in an s390 ELF linker hash table. */
677 static struct bfd_hash_entry *
678 link_hash_newfunc (struct bfd_hash_entry *entry,
679 struct bfd_hash_table *table,
682 /* Allocate the structure if it has not already been allocated by a
686 entry = bfd_hash_allocate (table,
687 sizeof (struct elf_s390_link_hash_entry));
692 /* Call the allocation method of the superclass. */
693 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
696 struct elf_s390_link_hash_entry *eh;
698 eh = (struct elf_s390_link_hash_entry *) entry;
699 eh->dyn_relocs = NULL;
700 eh->gotplt_refcount = 0;
701 eh->tls_type = GOT_UNKNOWN;
702 eh->ifunc_resolver_address = 0;
703 eh->ifunc_resolver_section = NULL;
709 /* Create an s390 ELF linker hash table. */
711 static struct bfd_link_hash_table *
712 elf_s390_link_hash_table_create (bfd *abfd)
714 struct elf_s390_link_hash_table *ret;
715 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
717 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
721 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
722 sizeof (struct elf_s390_link_hash_entry),
729 return &ret->elf.root;
732 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
733 shortcuts to them in our hash table. */
736 create_got_section (bfd *dynobj,
737 struct bfd_link_info *info)
739 struct elf_s390_link_hash_table *htab;
741 if (! _bfd_elf_create_got_section (dynobj, info))
744 htab = elf_s390_hash_table (info);
748 htab->elf.sgot = bfd_get_linker_section (dynobj, ".got");
749 htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
750 htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got");
751 if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot)
756 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
757 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
761 elf_s390_create_dynamic_sections (bfd *dynobj,
762 struct bfd_link_info *info)
764 struct elf_s390_link_hash_table *htab;
766 htab = elf_s390_hash_table (info);
770 if (!htab->elf.sgot && !create_got_section (dynobj, info))
773 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
776 htab->elf.splt = bfd_get_linker_section (dynobj, ".plt");
777 htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt");
778 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
780 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
782 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
783 || (!info->shared && !htab->srelbss))
789 /* Copy the extra info we tack onto an elf_link_hash_entry. */
792 elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
793 struct elf_link_hash_entry *dir,
794 struct elf_link_hash_entry *ind)
796 struct elf_s390_link_hash_entry *edir, *eind;
798 edir = (struct elf_s390_link_hash_entry *) dir;
799 eind = (struct elf_s390_link_hash_entry *) ind;
801 if (eind->dyn_relocs != NULL)
803 if (edir->dyn_relocs != NULL)
805 struct elf_dyn_relocs **pp;
806 struct elf_dyn_relocs *p;
808 /* Add reloc counts against the indirect sym to the direct sym
809 list. Merge any entries against the same section. */
810 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
812 struct elf_dyn_relocs *q;
814 for (q = edir->dyn_relocs; q != NULL; q = q->next)
815 if (q->sec == p->sec)
817 q->pc_count += p->pc_count;
818 q->count += p->count;
825 *pp = edir->dyn_relocs;
828 edir->dyn_relocs = eind->dyn_relocs;
829 eind->dyn_relocs = NULL;
832 if (ind->root.type == bfd_link_hash_indirect
833 && dir->got.refcount <= 0)
835 edir->tls_type = eind->tls_type;
836 eind->tls_type = GOT_UNKNOWN;
839 if (ELIMINATE_COPY_RELOCS
840 && ind->root.type != bfd_link_hash_indirect
841 && dir->dynamic_adjusted)
843 /* If called to transfer flags for a weakdef during processing
844 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
845 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
846 dir->ref_dynamic |= ind->ref_dynamic;
847 dir->ref_regular |= ind->ref_regular;
848 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
849 dir->needs_plt |= ind->needs_plt;
852 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
856 elf_s390_tls_transition (struct bfd_link_info *info,
868 return R_390_TLS_LE64;
869 return R_390_TLS_IE64;
870 case R_390_TLS_GOTIE64:
872 return R_390_TLS_LE64;
873 return R_390_TLS_GOTIE64;
874 case R_390_TLS_LDM64:
875 return R_390_TLS_LE64;
881 /* Look through the relocs for a section during the first phase, and
882 allocate space in the global offset table or procedure linkage
886 elf_s390_check_relocs (bfd *abfd,
887 struct bfd_link_info *info,
889 const Elf_Internal_Rela *relocs)
891 struct elf_s390_link_hash_table *htab;
892 Elf_Internal_Shdr *symtab_hdr;
893 struct elf_link_hash_entry **sym_hashes;
894 const Elf_Internal_Rela *rel;
895 const Elf_Internal_Rela *rel_end;
897 bfd_signed_vma *local_got_refcounts;
898 int tls_type, old_tls_type;
900 if (info->relocatable)
903 BFD_ASSERT (is_s390_elf (abfd));
905 htab = elf_s390_hash_table (info);
909 symtab_hdr = &elf_symtab_hdr (abfd);
910 sym_hashes = elf_sym_hashes (abfd);
911 local_got_refcounts = elf_local_got_refcounts (abfd);
915 rel_end = relocs + sec->reloc_count;
916 for (rel = relocs; rel < rel_end; rel++)
919 unsigned long r_symndx;
920 struct elf_link_hash_entry *h;
921 Elf_Internal_Sym *isym;
923 r_symndx = ELF64_R_SYM (rel->r_info);
925 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
927 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
933 if (r_symndx < symtab_hdr->sh_info)
935 /* A local symbol. */
936 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
941 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
943 struct plt_entry *plt;
945 if (htab->elf.dynobj == NULL)
946 htab->elf.dynobj = abfd;
948 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
951 if (local_got_refcounts == NULL)
953 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
955 local_got_refcounts = elf_local_got_refcounts (abfd);
957 plt = elf_s390_local_plt (abfd);
958 plt[r_symndx].plt.refcount++;
964 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
965 while (h->root.type == bfd_link_hash_indirect
966 || h->root.type == bfd_link_hash_warning)
967 h = (struct elf_link_hash_entry *) h->root.u.i.link;
969 /* PR15323, ref flags aren't set for references in the same
971 h->root.non_ir_ref = 1;
974 /* Create got section and local_got_refcounts array if they
976 r_type = elf_s390_tls_transition (info,
977 ELF64_R_TYPE (rel->r_info),
992 case R_390_GOTPLTENT:
994 case R_390_TLS_GOTIE12:
995 case R_390_TLS_GOTIE20:
996 case R_390_TLS_GOTIE64:
997 case R_390_TLS_IEENT:
999 case R_390_TLS_LDM64:
1001 && local_got_refcounts == NULL)
1003 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
1005 local_got_refcounts = elf_local_got_refcounts (abfd);
1009 case R_390_GOTOFF16:
1010 case R_390_GOTOFF32:
1011 case R_390_GOTOFF64:
1013 case R_390_GOTPCDBL:
1014 if (htab->elf.sgot == NULL)
1016 if (htab->elf.dynobj == NULL)
1017 htab->elf.dynobj = abfd;
1018 if (!create_got_section (htab->elf.dynobj, info))
1025 if (htab->elf.dynobj == NULL)
1026 htab->elf.dynobj = abfd;
1027 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1030 /* Make sure an IFUNC symbol defined in a non-shared object
1031 always gets a PLT slot. */
1032 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1034 /* The symbol is called by the dynamic loader in order
1035 to resolve the relocation. So it is in fact also
1044 case R_390_GOTOFF16:
1045 case R_390_GOTOFF32:
1046 case R_390_GOTOFF64:
1048 case R_390_GOTPCDBL:
1049 /* These relocs do not need a GOT slot. They just load the
1050 GOT pointer itself or address something else relative to
1051 the GOT. Since the GOT pointer has been set up above we
1055 case R_390_PLT12DBL:
1056 case R_390_PLT16DBL:
1057 case R_390_PLT24DBL:
1059 case R_390_PLT32DBL:
1061 case R_390_PLTOFF16:
1062 case R_390_PLTOFF32:
1063 case R_390_PLTOFF64:
1064 /* This symbol requires a procedure linkage table entry. We
1065 actually build the entry in adjust_dynamic_symbol,
1066 because this might be a case of linking PIC code which is
1067 never referenced by a dynamic object, in which case we
1068 don't need to generate a procedure linkage table entry
1071 /* If this is a local symbol, we resolve it directly without
1072 creating a procedure linkage table entry. */
1076 h->plt.refcount += 1;
1080 case R_390_GOTPLT12:
1081 case R_390_GOTPLT16:
1082 case R_390_GOTPLT20:
1083 case R_390_GOTPLT32:
1084 case R_390_GOTPLT64:
1085 case R_390_GOTPLTENT:
1086 /* This symbol requires either a procedure linkage table entry
1087 or an entry in the local got. We actually build the entry
1088 in adjust_dynamic_symbol because whether this is really a
1089 global reference can change and with it the fact if we have
1090 to create a plt entry or a local got entry. To be able to
1091 make a once global symbol a local one we have to keep track
1092 of the number of gotplt references that exist for this
1096 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1098 h->plt.refcount += 1;
1101 local_got_refcounts[r_symndx] += 1;
1104 case R_390_TLS_LDM64:
1105 htab->tls_ldm_got.refcount += 1;
1108 case R_390_TLS_IE64:
1109 case R_390_TLS_GOTIE12:
1110 case R_390_TLS_GOTIE20:
1111 case R_390_TLS_GOTIE64:
1112 case R_390_TLS_IEENT:
1114 info->flags |= DF_STATIC_TLS;
1123 case R_390_TLS_GD64:
1124 /* This symbol requires a global offset table entry. */
1133 tls_type = GOT_NORMAL;
1135 case R_390_TLS_GD64:
1136 tls_type = GOT_TLS_GD;
1138 case R_390_TLS_IE64:
1139 case R_390_TLS_GOTIE64:
1140 tls_type = GOT_TLS_IE;
1142 case R_390_TLS_GOTIE12:
1143 case R_390_TLS_GOTIE20:
1144 case R_390_TLS_IEENT:
1145 tls_type = GOT_TLS_IE_NLT;
1151 h->got.refcount += 1;
1152 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1156 local_got_refcounts[r_symndx] += 1;
1157 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1159 /* If a TLS symbol is accessed using IE at least once,
1160 there is no point to use dynamic model for it. */
1161 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1163 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1165 (*_bfd_error_handler)
1166 (_("%B: `%s' accessed both as normal and thread local symbol"),
1167 abfd, h->root.root.string);
1170 if (old_tls_type > tls_type)
1171 tls_type = old_tls_type;
1174 if (old_tls_type != tls_type)
1177 elf_s390_hash_entry (h)->tls_type = tls_type;
1179 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1182 if (r_type != R_390_TLS_IE64)
1186 case R_390_TLS_LE64:
1189 info->flags |= DF_STATIC_TLS;
1205 /* If this reloc is in a read-only section, we might
1206 need a copy reloc. We can't check reliably at this
1207 stage whether the section is read-only, as input
1208 sections have not yet been mapped to output sections.
1209 Tentatively set the flag for now, and correct in
1210 adjust_dynamic_symbol. */
1215 /* We may need a .plt entry if the function this reloc
1216 refers to is in a shared lib. */
1217 h->plt.refcount += 1;
1221 /* If we are creating a shared library, and this is a reloc
1222 against a global symbol, or a non PC relative reloc
1223 against a local symbol, then we need to copy the reloc
1224 into the shared library. However, if we are linking with
1225 -Bsymbolic, we do not need to copy a reloc against a
1226 global symbol which is defined in an object we are
1227 including in the link (i.e., DEF_REGULAR is set). At
1228 this point we have not seen all the input files, so it is
1229 possible that DEF_REGULAR is not set now but will be set
1230 later (it is never cleared). In case of a weak definition,
1231 DEF_REGULAR may be cleared later by a strong definition in
1232 a shared library. We account for that possibility below by
1233 storing information in the relocs_copied field of the hash
1234 table entry. A similar situation occurs when creating
1235 shared libraries and symbol visibility changes render the
1238 If on the other hand, we are creating an executable, we
1239 may need to keep relocations for symbols satisfied by a
1240 dynamic library if we manage to avoid copy relocs for the
1243 && (sec->flags & SEC_ALLOC) != 0
1244 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
1245 && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
1246 && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
1247 && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL
1248 && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1249 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1250 && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1252 && (! SYMBOLIC_BIND (info, h)
1253 || h->root.type == bfd_link_hash_defweak
1254 || !h->def_regular))))
1255 || (ELIMINATE_COPY_RELOCS
1257 && (sec->flags & SEC_ALLOC) != 0
1259 && (h->root.type == bfd_link_hash_defweak
1260 || !h->def_regular)))
1262 struct elf_dyn_relocs *p;
1263 struct elf_dyn_relocs **head;
1265 /* We must copy these reloc types into the output file.
1266 Create a reloc section in dynobj and make room for
1270 if (htab->elf.dynobj == NULL)
1271 htab->elf.dynobj = abfd;
1273 sreloc = _bfd_elf_make_dynamic_reloc_section
1274 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
1280 /* If this is a global symbol, we count the number of
1281 relocations we need for this symbol. */
1284 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1288 /* Track dynamic relocs needed for local syms too.
1289 We really need local syms available to do this
1294 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1299 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1303 vpp = &elf_section_data (s)->local_dynrel;
1304 head = (struct elf_dyn_relocs **) vpp;
1308 if (p == NULL || p->sec != sec)
1310 bfd_size_type amt = sizeof *p;
1311 p = ((struct elf_dyn_relocs *)
1312 bfd_alloc (htab->elf.dynobj, amt));
1323 if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
1324 || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL
1325 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1326 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1327 || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1328 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1329 || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1334 /* This relocation describes the C++ object vtable hierarchy.
1335 Reconstruct it for later use during GC. */
1336 case R_390_GNU_VTINHERIT:
1337 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1341 /* This relocation describes which C++ vtable entries are actually
1342 used. Record for later use during GC. */
1343 case R_390_GNU_VTENTRY:
1344 BFD_ASSERT (h != NULL);
1346 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1358 /* Return the section that should be marked against GC for a given
1362 elf_s390_gc_mark_hook (asection *sec,
1363 struct bfd_link_info *info,
1364 Elf_Internal_Rela *rel,
1365 struct elf_link_hash_entry *h,
1366 Elf_Internal_Sym *sym)
1369 switch (ELF64_R_TYPE (rel->r_info))
1371 case R_390_GNU_VTINHERIT:
1372 case R_390_GNU_VTENTRY:
1376 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1379 /* Update the got entry reference counts for the section being removed. */
1382 elf_s390_gc_sweep_hook (bfd *abfd,
1383 struct bfd_link_info *info,
1385 const Elf_Internal_Rela *relocs)
1387 struct elf_s390_link_hash_table *htab;
1388 Elf_Internal_Shdr *symtab_hdr;
1389 struct elf_link_hash_entry **sym_hashes;
1390 bfd_signed_vma *local_got_refcounts;
1391 const Elf_Internal_Rela *rel, *relend;
1393 if (info->relocatable)
1396 htab = elf_s390_hash_table (info);
1400 elf_section_data (sec)->local_dynrel = NULL;
1402 symtab_hdr = &elf_symtab_hdr (abfd);
1403 sym_hashes = elf_sym_hashes (abfd);
1404 local_got_refcounts = elf_local_got_refcounts (abfd);
1406 relend = relocs + sec->reloc_count;
1407 for (rel = relocs; rel < relend; rel++)
1409 unsigned long r_symndx;
1410 unsigned int r_type;
1411 struct elf_link_hash_entry *h = NULL;
1413 r_symndx = ELF64_R_SYM (rel->r_info);
1414 if (r_symndx >= symtab_hdr->sh_info)
1416 struct elf_s390_link_hash_entry *eh;
1417 struct elf_dyn_relocs **pp;
1418 struct elf_dyn_relocs *p;
1420 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1421 while (h->root.type == bfd_link_hash_indirect
1422 || h->root.type == bfd_link_hash_warning)
1423 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1424 eh = (struct elf_s390_link_hash_entry *) h;
1426 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1429 /* Everything must go for SEC. */
1436 Elf_Internal_Sym *isym;
1438 /* A local symbol. */
1439 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1444 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1446 struct plt_entry *plt = elf_s390_local_plt (abfd);
1447 if (plt[r_symndx].plt.refcount > 0)
1448 plt[r_symndx].plt.refcount--;
1452 r_type = ELF64_R_TYPE (rel->r_info);
1453 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1456 case R_390_TLS_LDM64:
1457 if (htab->tls_ldm_got.refcount > 0)
1458 htab->tls_ldm_got.refcount -= 1;
1461 case R_390_TLS_GD64:
1462 case R_390_TLS_IE64:
1463 case R_390_TLS_GOTIE12:
1464 case R_390_TLS_GOTIE20:
1465 case R_390_TLS_GOTIE64:
1466 case R_390_TLS_IEENT:
1472 case R_390_GOTOFF16:
1473 case R_390_GOTOFF32:
1474 case R_390_GOTOFF64:
1476 case R_390_GOTPCDBL:
1480 if (h->got.refcount > 0)
1481 h->got.refcount -= 1;
1483 else if (local_got_refcounts != NULL)
1485 if (local_got_refcounts[r_symndx] > 0)
1486 local_got_refcounts[r_symndx] -= 1;
1507 case R_390_PLT12DBL:
1508 case R_390_PLT16DBL:
1509 case R_390_PLT24DBL:
1511 case R_390_PLT32DBL:
1513 case R_390_PLTOFF16:
1514 case R_390_PLTOFF32:
1515 case R_390_PLTOFF64:
1518 if (h->plt.refcount > 0)
1519 h->plt.refcount -= 1;
1523 case R_390_GOTPLT12:
1524 case R_390_GOTPLT16:
1525 case R_390_GOTPLT20:
1526 case R_390_GOTPLT32:
1527 case R_390_GOTPLT64:
1528 case R_390_GOTPLTENT:
1531 if (h->plt.refcount > 0)
1533 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1534 h->plt.refcount -= 1;
1537 else if (local_got_refcounts != NULL)
1539 if (local_got_refcounts[r_symndx] > 0)
1540 local_got_refcounts[r_symndx] -= 1;
1552 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1553 entry but we found we will not create any. Called when we find we will
1554 not have any PLT for this symbol, by for example
1555 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1556 or elf_s390_size_dynamic_sections if no dynamic sections will be
1557 created (we're only linking static objects). */
1560 elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
1562 if (h->elf.root.type == bfd_link_hash_warning)
1563 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1565 if (h->gotplt_refcount <= 0)
1568 /* We simply add the number of gotplt references to the number
1569 * of got references for this symbol. */
1570 h->elf.got.refcount += h->gotplt_refcount;
1571 h->gotplt_refcount = -1;
1574 /* Adjust a symbol defined by a dynamic object and referenced by a
1575 regular object. The current definition is in some section of the
1576 dynamic object, but we're not including those sections. We have to
1577 change the definition to something the rest of the link can
1581 elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1582 struct elf_link_hash_entry *h)
1584 struct elf_s390_link_hash_table *htab;
1587 /* STT_GNU_IFUNC symbol must go through PLT. */
1588 if (s390_is_ifunc_symbol_p (h))
1591 /* If this is a function, put it in the procedure linkage table. We
1592 will fill in the contents of the procedure linkage table later
1593 (although we could actually do it here). */
1594 if (h->type == STT_FUNC
1597 if (h->plt.refcount <= 0
1598 || SYMBOL_CALLS_LOCAL (info, h)
1599 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1600 && h->root.type == bfd_link_hash_undefweak))
1602 /* This case can occur if we saw a PLT32 reloc in an input
1603 file, but the symbol was never referred to by a dynamic
1604 object, or if all references were garbage collected. In
1605 such a case, we don't actually need to build a procedure
1606 linkage table, and we can just do a PC32 reloc instead. */
1607 h->plt.offset = (bfd_vma) -1;
1609 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1615 /* It's possible that we incorrectly decided a .plt reloc was
1616 needed for an R_390_PC32 reloc to a non-function sym in
1617 check_relocs. We can't decide accurately between function and
1618 non-function syms in check-relocs; Objects loaded later in
1619 the link may change h->type. So fix it now. */
1620 h->plt.offset = (bfd_vma) -1;
1622 /* If this is a weak symbol, and there is a real definition, the
1623 processor independent code will have arranged for us to see the
1624 real definition first, and we can just use the same value. */
1625 if (h->u.weakdef != NULL)
1627 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1628 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1629 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1630 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1631 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1632 h->non_got_ref = h->u.weakdef->non_got_ref;
1636 /* This is a reference to a symbol defined by a dynamic object which
1637 is not a function. */
1639 /* If we are creating a shared library, we must presume that the
1640 only references to the symbol are via the global offset table.
1641 For such cases we need not do anything here; the relocations will
1642 be handled correctly by relocate_section. */
1646 /* If there are no references to this symbol that do not use the
1647 GOT, we don't need to generate a copy reloc. */
1648 if (!h->non_got_ref)
1651 /* If -z nocopyreloc was given, we won't generate them either. */
1652 if (info->nocopyreloc)
1658 if (ELIMINATE_COPY_RELOCS)
1660 struct elf_s390_link_hash_entry * eh;
1661 struct elf_dyn_relocs *p;
1663 eh = (struct elf_s390_link_hash_entry *) h;
1664 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1666 s = p->sec->output_section;
1667 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1671 /* If we didn't find any dynamic relocs in read-only sections, then
1672 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1680 /* We must allocate the symbol in our .dynbss section, which will
1681 become part of the .bss section of the executable. There will be
1682 an entry for this symbol in the .dynsym section. The dynamic
1683 object will contain position independent code, so all references
1684 from the dynamic object to this symbol will go through the global
1685 offset table. The dynamic linker will use the .dynsym entry to
1686 determine the address it must put in the global offset table, so
1687 both the dynamic object and the regular object will refer to the
1688 same memory location for the variable. */
1690 htab = elf_s390_hash_table (info);
1694 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1695 copy the initial value out of the dynamic object and into the
1696 runtime process image. */
1697 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
1699 htab->srelbss->size += sizeof (Elf64_External_Rela);
1705 return _bfd_elf_adjust_dynamic_copy (h, s);
1708 /* Allocate space in .plt, .got and associated reloc sections for
1712 allocate_dynrelocs (struct elf_link_hash_entry *h,
1715 struct bfd_link_info *info;
1716 struct elf_s390_link_hash_table *htab;
1717 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
1718 struct elf_dyn_relocs *p;
1720 if (h->root.type == bfd_link_hash_indirect)
1723 info = (struct bfd_link_info *) inf;
1724 htab = elf_s390_hash_table (info);
1728 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1729 here if it is defined and referenced in a non-shared object. */
1730 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1731 return s390_elf_allocate_ifunc_dyn_relocs (info, h,
1733 else if (htab->elf.dynamic_sections_created
1734 && h->plt.refcount > 0)
1736 /* Make sure this symbol is output as a dynamic symbol.
1737 Undefined weak syms won't yet be marked as dynamic. */
1738 if (h->dynindx == -1
1739 && !h->forced_local)
1741 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1746 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1748 asection *s = htab->elf.splt;
1750 /* If this is the first .plt entry, make room for the special
1753 s->size += PLT_FIRST_ENTRY_SIZE;
1755 h->plt.offset = s->size;
1757 /* If this symbol is not defined in a regular file, and we are
1758 not generating a shared library, then set the symbol to this
1759 location in the .plt. This is required to make function
1760 pointers compare as equal between the normal executable and
1761 the shared library. */
1765 h->root.u.def.section = s;
1766 h->root.u.def.value = h->plt.offset;
1769 /* Make room for this entry. */
1770 s->size += PLT_ENTRY_SIZE;
1772 /* We also need to make an entry in the .got.plt section, which
1773 will be placed in the .got section by the linker script. */
1774 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
1776 /* We also need to make an entry in the .rela.plt section. */
1777 htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
1781 h->plt.offset = (bfd_vma) -1;
1783 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1788 h->plt.offset = (bfd_vma) -1;
1790 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1793 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1794 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1795 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1796 we can save the dynamic TLS relocation. */
1797 if (h->got.refcount > 0
1800 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1802 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1803 /* For the GOTIE access without a literal pool entry the offset has
1804 to be stored somewhere. The immediate value in the instruction
1805 is not bit enough so the value is stored in the got. */
1807 h->got.offset = htab->elf.sgot->size;
1808 htab->elf.sgot->size += GOT_ENTRY_SIZE;
1811 h->got.offset = (bfd_vma) -1;
1813 else if (h->got.refcount > 0)
1817 int tls_type = elf_s390_hash_entry(h)->tls_type;
1819 /* Make sure this symbol is output as a dynamic symbol.
1820 Undefined weak syms won't yet be marked as dynamic. */
1821 if (h->dynindx == -1
1822 && !h->forced_local)
1824 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1829 h->got.offset = s->size;
1830 s->size += GOT_ENTRY_SIZE;
1831 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1832 if (tls_type == GOT_TLS_GD)
1833 s->size += GOT_ENTRY_SIZE;
1834 dyn = htab->elf.dynamic_sections_created;
1835 /* R_390_TLS_IE64 needs one dynamic relocation,
1836 R_390_TLS_GD64 needs one if local symbol and two if global. */
1837 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1838 || tls_type >= GOT_TLS_IE)
1839 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
1840 else if (tls_type == GOT_TLS_GD)
1841 htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
1842 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1843 || h->root.type != bfd_link_hash_undefweak)
1845 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1846 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
1849 h->got.offset = (bfd_vma) -1;
1851 if (eh->dyn_relocs == NULL)
1854 /* In the shared -Bsymbolic case, discard space allocated for
1855 dynamic pc-relative relocs against symbols which turn out to be
1856 defined in regular objects. For the normal shared case, discard
1857 space for pc-relative relocs that have become local due to symbol
1858 visibility changes. */
1862 if (SYMBOL_CALLS_LOCAL (info, h))
1864 struct elf_dyn_relocs **pp;
1866 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1868 p->count -= p->pc_count;
1877 /* Also discard relocs on undefined weak syms with non-default
1879 if (eh->dyn_relocs != NULL
1880 && h->root.type == bfd_link_hash_undefweak)
1882 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1883 eh->dyn_relocs = NULL;
1885 /* Make sure undefined weak symbols are output as a dynamic
1887 else if (h->dynindx == -1
1888 && !h->forced_local)
1890 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1895 else if (ELIMINATE_COPY_RELOCS)
1897 /* For the non-shared case, discard space for relocs against
1898 symbols which turn out to need copy relocs or are not
1904 || (htab->elf.dynamic_sections_created
1905 && (h->root.type == bfd_link_hash_undefweak
1906 || h->root.type == bfd_link_hash_undefined))))
1908 /* Make sure this symbol is output as a dynamic symbol.
1909 Undefined weak syms won't yet be marked as dynamic. */
1910 if (h->dynindx == -1
1911 && !h->forced_local)
1913 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1917 /* If that succeeded, we know we'll be keeping all the
1919 if (h->dynindx != -1)
1923 eh->dyn_relocs = NULL;
1928 /* Finally, allocate space. */
1929 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1931 asection *sreloc = elf_section_data (p->sec)->sreloc;
1932 sreloc->size += p->count * sizeof (Elf64_External_Rela);
1938 /* Find any dynamic relocs that apply to read-only sections. */
1941 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1943 struct elf_s390_link_hash_entry *eh;
1944 struct elf_dyn_relocs *p;
1946 eh = (struct elf_s390_link_hash_entry *) h;
1947 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1949 asection *s = p->sec->output_section;
1951 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1953 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1955 info->flags |= DF_TEXTREL;
1957 /* Not an error, just cut short the traversal. */
1964 /* Set the sizes of the dynamic sections. */
1967 elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1968 struct bfd_link_info *info)
1970 struct elf_s390_link_hash_table *htab;
1976 htab = elf_s390_hash_table (info);
1980 dynobj = htab->elf.dynobj;
1984 if (htab->elf.dynamic_sections_created)
1986 /* Set the contents of the .interp section to the interpreter. */
1987 if (info->executable)
1989 s = bfd_get_linker_section (dynobj, ".interp");
1992 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1993 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1997 /* Set up .got offsets for local syms, and space for local dynamic
1999 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2001 bfd_signed_vma *local_got;
2002 bfd_signed_vma *end_local_got;
2003 char *local_tls_type;
2004 bfd_size_type locsymcount;
2005 Elf_Internal_Shdr *symtab_hdr;
2007 struct plt_entry *local_plt;
2010 if (! is_s390_elf (ibfd))
2013 for (s = ibfd->sections; s != NULL; s = s->next)
2015 struct elf_dyn_relocs *p;
2017 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2019 if (!bfd_is_abs_section (p->sec)
2020 && bfd_is_abs_section (p->sec->output_section))
2022 /* Input section has been discarded, either because
2023 it is a copy of a linkonce section or due to
2024 linker script /DISCARD/, so we'll be discarding
2027 else if (p->count != 0)
2029 srela = elf_section_data (p->sec)->sreloc;
2030 srela->size += p->count * sizeof (Elf64_External_Rela);
2031 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2032 info->flags |= DF_TEXTREL;
2037 local_got = elf_local_got_refcounts (ibfd);
2041 symtab_hdr = &elf_symtab_hdr (ibfd);
2042 locsymcount = symtab_hdr->sh_info;
2043 end_local_got = local_got + locsymcount;
2044 local_tls_type = elf_s390_local_got_tls_type (ibfd);
2046 srela = htab->elf.srelgot;
2047 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2051 *local_got = s->size;
2052 s->size += GOT_ENTRY_SIZE;
2053 if (*local_tls_type == GOT_TLS_GD)
2054 s->size += GOT_ENTRY_SIZE;
2056 srela->size += sizeof (Elf64_External_Rela);
2059 *local_got = (bfd_vma) -1;
2062 local_plt = elf_s390_local_plt (ibfd);
2063 for (i = 0; i < symtab_hdr->sh_info; i++)
2065 if (local_plt[i].plt.refcount > 0)
2067 local_plt[i].plt.offset = htab->elf.iplt->size;
2068 htab->elf.iplt->size += PLT_ENTRY_SIZE;
2069 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2070 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
2073 local_plt[i].plt.offset = (bfd_vma) -1;
2077 if (htab->tls_ldm_got.refcount > 0)
2079 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
2081 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2082 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2083 htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
2086 htab->tls_ldm_got.offset = -1;
2088 /* Allocate global sym .plt and .got entries, and space for global
2089 sym dynamic relocs. */
2090 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2092 /* We now have determined the sizes of the various dynamic sections.
2093 Allocate memory for them. */
2095 for (s = dynobj->sections; s != NULL; s = s->next)
2097 if ((s->flags & SEC_LINKER_CREATED) == 0)
2100 if (s == htab->elf.splt
2101 || s == htab->elf.sgot
2102 || s == htab->elf.sgotplt
2103 || s == htab->sdynbss
2104 || s == htab->elf.iplt
2105 || s == htab->elf.igotplt
2106 || s == htab->irelifunc)
2108 /* Strip this section if we don't need it; see the
2111 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2113 if (s->size != 0 && s != htab->elf.srelplt)
2116 /* We use the reloc_count field as a counter if we need
2117 to copy relocs into the output file. */
2122 /* It's not one of our sections, so don't allocate space. */
2128 /* If we don't need this section, strip it from the
2129 output file. This is to handle .rela.bss and
2130 .rela.plt. We must create it in
2131 create_dynamic_sections, because it must be created
2132 before the linker maps input sections to output
2133 sections. The linker does that before
2134 adjust_dynamic_symbol is called, and it is that
2135 function which decides whether anything needs to go
2136 into these sections. */
2138 s->flags |= SEC_EXCLUDE;
2142 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2145 /* Allocate memory for the section contents. We use bfd_zalloc
2146 here in case unused entries are not reclaimed before the
2147 section's contents are written out. This should not happen,
2148 but this way if it does, we get a R_390_NONE reloc instead
2150 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2151 if (s->contents == NULL)
2155 if (htab->elf.dynamic_sections_created)
2157 /* Add some entries to the .dynamic section. We fill in the
2158 values later, in elf_s390_finish_dynamic_sections, but we
2159 must add the entries now so that we get the correct size for
2160 the .dynamic section. The DT_DEBUG entry is filled in by the
2161 dynamic linker and used by the debugger. */
2162 #define add_dynamic_entry(TAG, VAL) \
2163 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2165 if (info->executable)
2167 if (!add_dynamic_entry (DT_DEBUG, 0))
2171 if (htab->elf.splt->size != 0)
2173 if (!add_dynamic_entry (DT_PLTGOT, 0)
2174 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2175 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2176 || !add_dynamic_entry (DT_JMPREL, 0))
2182 if (!add_dynamic_entry (DT_RELA, 0)
2183 || !add_dynamic_entry (DT_RELASZ, 0)
2184 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
2187 /* If any dynamic relocs apply to a read-only section,
2188 then we need a DT_TEXTREL entry. */
2189 if ((info->flags & DF_TEXTREL) == 0)
2190 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2193 if ((info->flags & DF_TEXTREL) != 0)
2195 if (!add_dynamic_entry (DT_TEXTREL, 0))
2200 #undef add_dynamic_entry
2205 /* Return the base VMA address which should be subtracted from real addresses
2206 when resolving @dtpoff relocation.
2207 This is PT_TLS segment p_vaddr. */
2210 dtpoff_base (struct bfd_link_info *info)
2212 /* If tls_sec is NULL, we should have signalled an error already. */
2213 if (elf_hash_table (info)->tls_sec == NULL)
2215 return elf_hash_table (info)->tls_sec->vma;
2218 /* Return the relocation value for @tpoff relocation
2219 if STT_TLS virtual address is ADDRESS. */
2222 tpoff (struct bfd_link_info *info, bfd_vma address)
2224 struct elf_link_hash_table *htab = elf_hash_table (info);
2226 /* If tls_sec is NULL, we should have signalled an error already. */
2227 if (htab->tls_sec == NULL)
2229 return htab->tls_size + htab->tls_sec->vma - address;
2232 /* Complain if TLS instruction relocation is against an invalid
2236 invalid_tls_insn (bfd *input_bfd,
2237 asection *input_section,
2238 Elf_Internal_Rela *rel)
2240 reloc_howto_type *howto;
2242 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
2243 (*_bfd_error_handler)
2244 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2247 (long) rel->r_offset,
2249 bfd_set_error (bfd_error_bad_value);
2252 /* Relocate a 390 ELF section. */
2255 elf_s390_relocate_section (bfd *output_bfd,
2256 struct bfd_link_info *info,
2258 asection *input_section,
2260 Elf_Internal_Rela *relocs,
2261 Elf_Internal_Sym *local_syms,
2262 asection **local_sections)
2264 struct elf_s390_link_hash_table *htab;
2265 Elf_Internal_Shdr *symtab_hdr;
2266 struct elf_link_hash_entry **sym_hashes;
2267 bfd_vma *local_got_offsets;
2268 Elf_Internal_Rela *rel;
2269 Elf_Internal_Rela *relend;
2271 BFD_ASSERT (is_s390_elf (input_bfd));
2273 htab = elf_s390_hash_table (info);
2277 symtab_hdr = &elf_symtab_hdr (input_bfd);
2278 sym_hashes = elf_sym_hashes (input_bfd);
2279 local_got_offsets = elf_local_got_offsets (input_bfd);
2282 relend = relocs + input_section->reloc_count;
2283 for (; rel < relend; rel++)
2285 unsigned int r_type;
2286 reloc_howto_type *howto;
2287 unsigned long r_symndx;
2288 struct elf_link_hash_entry *h;
2289 Elf_Internal_Sym *sym;
2293 bfd_boolean unresolved_reloc;
2294 bfd_reloc_status_type r;
2296 asection *base_got = htab->elf.sgot;
2298 r_type = ELF64_R_TYPE (rel->r_info);
2299 if (r_type == (int) R_390_GNU_VTINHERIT
2300 || r_type == (int) R_390_GNU_VTENTRY)
2302 if (r_type >= (int) R_390_max)
2304 bfd_set_error (bfd_error_bad_value);
2308 howto = elf_howto_table + r_type;
2309 r_symndx = ELF64_R_SYM (rel->r_info);
2314 unresolved_reloc = FALSE;
2315 if (r_symndx < symtab_hdr->sh_info)
2317 sym = local_syms + r_symndx;
2318 sec = local_sections[r_symndx];
2320 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2322 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2323 if (local_plt == NULL)
2326 /* Address of the PLT slot. */
2327 relocation = (htab->elf.iplt->output_section->vma
2328 + htab->elf.iplt->output_offset
2329 + local_plt[r_symndx].plt.offset);
2333 case R_390_PLTOFF16:
2334 case R_390_PLTOFF32:
2335 case R_390_PLTOFF64:
2336 relocation -= htab->elf.sgot->output_section->vma;
2338 case R_390_GOTPLT12:
2339 case R_390_GOTPLT16:
2340 case R_390_GOTPLT20:
2341 case R_390_GOTPLT32:
2342 case R_390_GOTPLT64:
2343 case R_390_GOTPLTENT:
2351 /* Write the PLT slot address into the GOT slot. */
2352 bfd_put_64 (output_bfd, relocation,
2353 htab->elf.sgot->contents +
2354 local_got_offsets[r_symndx]);
2355 relocation = (local_got_offsets[r_symndx] +
2356 htab->elf.sgot->output_offset);
2358 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2359 relocation += htab->elf.sgot->output_section->vma;
2365 /* The output section is needed later in
2366 finish_dynamic_section when creating the dynamic
2368 local_plt[r_symndx].sec = sec;
2372 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2376 bfd_boolean warned ATTRIBUTE_UNUSED;
2377 bfd_boolean ignored ATTRIBUTE_UNUSED;
2379 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2380 r_symndx, symtab_hdr, sym_hashes,
2382 unresolved_reloc, warned, ignored);
2385 if (sec != NULL && discarded_section (sec))
2386 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2387 rel, 1, relend, howto, 0, contents);
2389 if (info->relocatable)
2394 case R_390_GOTPLT12:
2395 case R_390_GOTPLT16:
2396 case R_390_GOTPLT20:
2397 case R_390_GOTPLT32:
2398 case R_390_GOTPLT64:
2399 case R_390_GOTPLTENT:
2400 /* There are three cases for a GOTPLT relocation. 1) The
2401 relocation is against the jump slot entry of a plt that
2402 will get emitted to the output file. 2) The relocation
2403 is against the jump slot of a plt entry that has been
2404 removed. elf_s390_adjust_gotplt has created a GOT entry
2405 as replacement. 3) The relocation is against a local symbol.
2406 Cases 2) and 3) are the same as the GOT relocation code
2407 so we just have to test for case 1 and fall through for
2409 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2413 if (s390_is_ifunc_symbol_p (h))
2415 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2416 relocation = (plt_index * GOT_ENTRY_SIZE +
2417 htab->elf.igotplt->output_offset);
2418 if (r_type == R_390_GOTPLTENT)
2419 relocation += htab->elf.igotplt->output_section->vma;
2424 Current offset - size first entry / entry size. */
2425 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2428 /* Offset in GOT is PLT index plus GOT headers(3)
2429 times 4, addr & GOT addr. */
2430 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2431 if (r_type == R_390_GOTPLTENT)
2432 relocation += htab->elf.sgot->output_section->vma;
2434 unresolved_reloc = FALSE;
2445 /* Relocation is to the entry for this symbol in the global
2447 if (base_got == NULL)
2454 off = h->got.offset;
2455 dyn = htab->elf.dynamic_sections_created;
2457 if (s390_is_ifunc_symbol_p (h))
2459 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2460 if (off == (bfd_vma)-1)
2462 /* No explicit GOT usage so redirect to the
2464 base_got = htab->elf.igotplt;
2465 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2469 /* Explicit GOT slots must contain the address
2470 of the PLT slot. This will be handled in
2471 finish_dynamic_symbol. */
2474 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2476 && SYMBOL_REFERENCES_LOCAL (info, h))
2477 || (ELF_ST_VISIBILITY (h->other)
2478 && h->root.type == bfd_link_hash_undefweak))
2480 /* This is actually a static link, or it is a
2481 -Bsymbolic link and the symbol is defined
2482 locally, or the symbol was forced to be local
2483 because of a version file. We must initialize
2484 this entry in the global offset table. Since the
2485 offset must always be a multiple of 2, we use the
2486 least significant bit to record whether we have
2487 initialized it already.
2489 When doing a dynamic link, we create a .rel.got
2490 relocation entry to initialize the value. This
2491 is done in the finish_dynamic_symbol routine. */
2496 bfd_put_64 (output_bfd, relocation,
2497 base_got->contents + off);
2503 && SYMBOL_REFERENCES_LOCAL (info, h))
2504 /* lgrl rx,sym@GOTENT -> larl rx, sym */
2505 && ((r_type == R_390_GOTENT
2506 && (bfd_get_16 (input_bfd,
2507 contents + rel->r_offset - 2)
2508 & 0xff0f) == 0xc408)
2509 /* lg rx, sym@GOT(r12) -> larl rx, sym */
2510 || (r_type == R_390_GOT20
2511 && (bfd_get_32 (input_bfd,
2512 contents + rel->r_offset - 2)
2513 & 0xff00f000) == 0xe300c000
2514 && bfd_get_8 (input_bfd,
2515 contents + rel->r_offset + 3) == 0x04)))
2518 unsigned short new_insn =
2519 (0xc000 | (bfd_get_8 (input_bfd,
2520 contents + rel->r_offset - 1) & 0xf0));
2521 bfd_put_16 (output_bfd, new_insn,
2522 contents + rel->r_offset - 2);
2523 r_type = R_390_PC32DBL;
2525 howto = elf_howto_table + r_type;
2526 relocation = h->root.u.def.value
2527 + h->root.u.def.section->output_section->vma
2528 + h->root.u.def.section->output_offset;
2533 unresolved_reloc = FALSE;
2537 if (local_got_offsets == NULL)
2540 off = local_got_offsets[r_symndx];
2542 /* The offset must always be a multiple of 8. We use
2543 the least significant bit to record whether we have
2544 already generated the necessary reloc. */
2549 bfd_put_64 (output_bfd, relocation,
2550 htab->elf.sgot->contents + off);
2555 Elf_Internal_Rela outrel;
2558 s = htab->elf.srelgot;
2562 outrel.r_offset = (htab->elf.sgot->output_section->vma
2563 + htab->elf.sgot->output_offset
2565 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2566 outrel.r_addend = relocation;
2568 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2569 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2572 local_got_offsets[r_symndx] |= 1;
2576 if (off >= (bfd_vma) -2)
2579 relocation = base_got->output_offset + off;
2581 /* For @GOTENT the relocation is against the offset between
2582 the instruction and the symbols entry in the GOT and not
2583 between the start of the GOT and the symbols entry. We
2584 add the vma of the GOT to get the correct value. */
2585 if ( r_type == R_390_GOTENT
2586 || r_type == R_390_GOTPLTENT)
2587 relocation += base_got->output_section->vma;
2591 case R_390_GOTOFF16:
2592 case R_390_GOTOFF32:
2593 case R_390_GOTOFF64:
2594 /* Relocation is relative to the start of the global offset
2597 /* Note that sgot->output_offset is not involved in this
2598 calculation. We always want the start of .got. If we
2599 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2600 permitted by the ABI, we might have to change this
2602 relocation -= htab->elf.sgot->output_section->vma;
2606 case R_390_GOTPCDBL:
2607 /* Use global offset table as symbol value. */
2608 relocation = htab->elf.sgot->output_section->vma;
2609 unresolved_reloc = FALSE;
2612 case R_390_PLT12DBL:
2613 case R_390_PLT16DBL:
2614 case R_390_PLT24DBL:
2616 case R_390_PLT32DBL:
2618 /* Relocation is to the entry for this symbol in the
2619 procedure linkage table. */
2621 /* Resolve a PLT32 reloc against a local symbol directly,
2622 without using the procedure linkage table. */
2626 if (h->plt.offset == (bfd_vma) -1
2627 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
2629 /* We didn't make a PLT entry for this symbol. This
2630 happens when statically linking PIC code, or when
2631 using -Bsymbolic. */
2634 if (s390_is_ifunc_symbol_p (h))
2635 relocation = (htab->elf.iplt->output_section->vma
2636 + htab->elf.iplt->output_offset
2639 relocation = (htab->elf.splt->output_section->vma
2640 + htab->elf.splt->output_offset
2642 unresolved_reloc = FALSE;
2645 case R_390_PLTOFF16:
2646 case R_390_PLTOFF32:
2647 case R_390_PLTOFF64:
2648 /* Relocation is to the entry for this symbol in the
2649 procedure linkage table relative to the start of the GOT. */
2651 /* For local symbols or if we didn't make a PLT entry for
2652 this symbol resolve the symbol directly. */
2654 || h->plt.offset == (bfd_vma) -1
2655 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
2657 relocation -= htab->elf.sgot->output_section->vma;
2661 if (s390_is_ifunc_symbol_p (h))
2662 relocation = (htab->elf.iplt->output_section->vma
2663 + htab->elf.iplt->output_offset
2665 - htab->elf.sgot->output_section->vma);
2667 relocation = (htab->elf.splt->output_section->vma
2668 + htab->elf.splt->output_offset
2670 - htab->elf.sgot->output_section->vma);
2671 unresolved_reloc = FALSE;
2687 && s390_is_ifunc_symbol_p (h)
2690 if (!info->shared || !h->non_got_ref)
2692 /* For a non-shared object STT_GNU_IFUNC symbol must
2694 relocation = (htab->elf.iplt->output_section->vma
2695 + htab->elf.iplt->output_offset
2701 /* For shared objects a runtime relocation is needed. */
2703 Elf_Internal_Rela outrel;
2706 /* Need a dynamic relocation to get the real function
2708 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2712 if (outrel.r_offset == (bfd_vma) -1
2713 || outrel.r_offset == (bfd_vma) -2)
2716 outrel.r_offset += (input_section->output_section->vma
2717 + input_section->output_offset);
2719 if (h->dynindx == -1
2721 || info->executable)
2723 /* This symbol is resolved locally. */
2724 outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
2725 outrel.r_addend = (h->root.u.def.value
2726 + h->root.u.def.section->output_section->vma
2727 + h->root.u.def.section->output_offset);
2731 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2732 outrel.r_addend = 0;
2735 sreloc = htab->elf.irelifunc;
2736 elf_append_rela (output_bfd, sreloc, &outrel);
2738 /* If this reloc is against an external symbol, we
2739 do not want to fiddle with the addend. Otherwise,
2740 we need to include the symbol value so that it
2741 becomes an addend for the dynamic reloc. For an
2742 internal symbol, we have updated addend. */
2747 if ((input_section->flags & SEC_ALLOC) == 0)
2752 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2753 || h->root.type != bfd_link_hash_undefweak)
2754 && ((r_type != R_390_PC16
2755 && r_type != R_390_PC12DBL
2756 && r_type != R_390_PC16DBL
2757 && r_type != R_390_PC24DBL
2758 && r_type != R_390_PC32
2759 && r_type != R_390_PC32DBL
2760 && r_type != R_390_PC64)
2761 || !SYMBOL_CALLS_LOCAL (info, h)))
2762 || (ELIMINATE_COPY_RELOCS
2769 || h->root.type == bfd_link_hash_undefweak
2770 || h->root.type == bfd_link_hash_undefined)))
2772 Elf_Internal_Rela outrel;
2773 bfd_boolean skip, relocate;
2777 /* When generating a shared object, these relocations
2778 are copied into the output file to be resolved at run
2784 _bfd_elf_section_offset (output_bfd, info, input_section,
2786 if (outrel.r_offset == (bfd_vma) -1)
2788 else if (outrel.r_offset == (bfd_vma) -2)
2789 skip = TRUE, relocate = TRUE;
2791 outrel.r_offset += (input_section->output_section->vma
2792 + input_section->output_offset);
2795 memset (&outrel, 0, sizeof outrel);
2798 && (r_type == R_390_PC16
2799 || r_type == R_390_PC12DBL
2800 || r_type == R_390_PC16DBL
2801 || r_type == R_390_PC24DBL
2802 || r_type == R_390_PC32
2803 || r_type == R_390_PC32DBL
2804 || r_type == R_390_PC64
2806 || !SYMBOLIC_BIND (info, h)
2807 || !h->def_regular))
2809 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2810 outrel.r_addend = rel->r_addend;
2814 /* This symbol is local, or marked to become local. */
2815 outrel.r_addend = relocation + rel->r_addend;
2816 if (r_type == R_390_64)
2819 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2825 if (bfd_is_abs_section (sec))
2827 else if (sec == NULL || sec->owner == NULL)
2829 bfd_set_error(bfd_error_bad_value);
2836 osec = sec->output_section;
2837 sindx = elf_section_data (osec)->dynindx;
2841 osec = htab->elf.text_index_section;
2842 sindx = elf_section_data (osec)->dynindx;
2844 BFD_ASSERT (sindx != 0);
2846 /* We are turning this relocation into one
2847 against a section symbol, so subtract out
2848 the output section's address but not the
2849 offset of the input section in the output
2851 outrel.r_addend -= osec->vma;
2853 outrel.r_info = ELF64_R_INFO (sindx, r_type);
2857 sreloc = elf_section_data (input_section)->sreloc;
2861 loc = sreloc->contents;
2862 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2863 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2865 /* If this reloc is against an external symbol, we do
2866 not want to fiddle with the addend. Otherwise, we
2867 need to include the symbol value so that it becomes
2868 an addend for the dynamic reloc. */
2875 /* Relocations for tls literal pool entries. */
2876 case R_390_TLS_IE64:
2879 Elf_Internal_Rela outrel;
2883 outrel.r_offset = rel->r_offset
2884 + input_section->output_section->vma
2885 + input_section->output_offset;
2886 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2887 sreloc = elf_section_data (input_section)->sreloc;
2890 loc = sreloc->contents;
2891 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2892 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2896 case R_390_TLS_GD64:
2897 case R_390_TLS_GOTIE64:
2898 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2899 tls_type = GOT_UNKNOWN;
2900 if (h == NULL && local_got_offsets)
2901 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2904 tls_type = elf_s390_hash_entry(h)->tls_type;
2905 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2906 r_type = R_390_TLS_LE64;
2908 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2909 r_type = R_390_TLS_IE64;
2911 if (r_type == R_390_TLS_LE64)
2913 /* This relocation gets optimized away by the local exec
2914 access optimization. */
2915 BFD_ASSERT (! unresolved_reloc);
2916 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2917 contents + rel->r_offset);
2921 if (htab->elf.sgot == NULL)
2925 off = h->got.offset;
2928 if (local_got_offsets == NULL)
2931 off = local_got_offsets[r_symndx];
2940 Elf_Internal_Rela outrel;
2944 if (htab->elf.srelgot == NULL)
2947 outrel.r_offset = (htab->elf.sgot->output_section->vma
2948 + htab->elf.sgot->output_offset + off);
2950 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2951 if (r_type == R_390_TLS_GD64)
2952 dr_type = R_390_TLS_DTPMOD;
2954 dr_type = R_390_TLS_TPOFF;
2955 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2956 outrel.r_addend = relocation - dtpoff_base (info);
2958 outrel.r_addend = 0;
2959 outrel.r_info = ELF64_R_INFO (indx, dr_type);
2960 loc = htab->elf.srelgot->contents;
2961 loc += htab->elf.srelgot->reloc_count++
2962 * sizeof (Elf64_External_Rela);
2963 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2965 if (r_type == R_390_TLS_GD64)
2969 BFD_ASSERT (! unresolved_reloc);
2970 bfd_put_64 (output_bfd,
2971 relocation - dtpoff_base (info),
2972 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
2976 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
2977 outrel.r_offset += GOT_ENTRY_SIZE;
2978 outrel.r_addend = 0;
2979 htab->elf.srelgot->reloc_count++;
2980 loc += sizeof (Elf64_External_Rela);
2981 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2988 local_got_offsets[r_symndx] |= 1;
2991 if (off >= (bfd_vma) -2)
2993 if (r_type == ELF64_R_TYPE (rel->r_info))
2995 relocation = htab->elf.sgot->output_offset + off;
2996 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
2997 relocation += htab->elf.sgot->output_section->vma;
2998 unresolved_reloc = FALSE;
3002 bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
3003 contents + rel->r_offset);
3008 case R_390_TLS_GOTIE12:
3009 case R_390_TLS_GOTIE20:
3010 case R_390_TLS_IEENT:
3013 if (local_got_offsets == NULL)
3015 off = local_got_offsets[r_symndx];
3017 goto emit_tls_relocs;
3021 off = h->got.offset;
3022 tls_type = elf_s390_hash_entry(h)->tls_type;
3023 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
3024 goto emit_tls_relocs;
3027 if (htab->elf.sgot == NULL)
3030 BFD_ASSERT (! unresolved_reloc);
3031 bfd_put_64 (output_bfd, -tpoff (info, relocation),
3032 htab->elf.sgot->contents + off);
3033 relocation = htab->elf.sgot->output_offset + off;
3034 if (r_type == R_390_TLS_IEENT)
3035 relocation += htab->elf.sgot->output_section->vma;
3036 unresolved_reloc = FALSE;
3039 case R_390_TLS_LDM64:
3041 /* The literal pool entry this relocation refers to gets ignored
3042 by the optimized code of the local exec model. Do nothing
3043 and the value will turn out zero. */
3046 if (htab->elf.sgot == NULL)
3049 off = htab->tls_ldm_got.offset;
3054 Elf_Internal_Rela outrel;
3057 if (htab->elf.srelgot == NULL)
3060 outrel.r_offset = (htab->elf.sgot->output_section->vma
3061 + htab->elf.sgot->output_offset + off);
3063 bfd_put_64 (output_bfd, 0,
3064 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3065 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
3066 outrel.r_addend = 0;
3067 loc = htab->elf.srelgot->contents;
3068 loc += htab->elf.srelgot->reloc_count++
3069 * sizeof (Elf64_External_Rela);
3070 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3071 htab->tls_ldm_got.offset |= 1;
3073 relocation = htab->elf.sgot->output_offset + off;
3074 unresolved_reloc = FALSE;
3077 case R_390_TLS_LE64:
3080 /* Linking a shared library with non-fpic code requires
3081 a R_390_TLS_TPOFF relocation. */
3082 Elf_Internal_Rela outrel;
3087 outrel.r_offset = rel->r_offset
3088 + input_section->output_section->vma
3089 + input_section->output_offset;
3090 if (h != NULL && h->dynindx != -1)
3094 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
3096 outrel.r_addend = relocation - dtpoff_base (info);
3098 outrel.r_addend = 0;
3099 sreloc = elf_section_data (input_section)->sreloc;
3102 loc = sreloc->contents;
3103 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
3104 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3108 BFD_ASSERT (! unresolved_reloc);
3109 bfd_put_64 (output_bfd, -tpoff (info, relocation),
3110 contents + rel->r_offset);
3114 case R_390_TLS_LDO64:
3115 if (info->shared || (input_section->flags & SEC_DEBUGGING))
3116 relocation -= dtpoff_base (info);
3118 /* When converting LDO to LE, we must negate. */
3119 relocation = -tpoff (info, relocation);
3122 /* Relocations for tls instructions. */
3123 case R_390_TLS_LOAD:
3124 case R_390_TLS_GDCALL:
3125 case R_390_TLS_LDCALL:
3126 tls_type = GOT_UNKNOWN;
3127 if (h == NULL && local_got_offsets)
3128 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3130 tls_type = elf_s390_hash_entry(h)->tls_type;
3132 if (tls_type == GOT_TLS_GD)
3135 if (r_type == R_390_TLS_LOAD)
3137 if (!info->shared && (h == NULL || h->dynindx == -1))
3139 /* IE->LE transition. Four valid cases:
3140 lg %rx,(0,%ry) -> sllg %rx,%ry,0
3141 lg %rx,(%ry,0) -> sllg %rx,%ry,0
3142 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
3143 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
3144 unsigned int insn0, insn1, ry;
3146 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3147 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3148 if (insn1 != 0x0004)
3149 invalid_tls_insn (input_bfd, input_section, rel);
3151 if ((insn0 & 0xff00f000) == 0xe3000000)
3152 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
3153 ry = (insn0 & 0x000f0000);
3154 else if ((insn0 & 0xff0f0000) == 0xe3000000)
3155 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
3156 ry = (insn0 & 0x0000f000) << 4;
3157 else if ((insn0 & 0xff00f000) == 0xe300c000)
3158 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
3159 ry = (insn0 & 0x000f0000);
3160 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
3161 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
3162 ry = (insn0 & 0x0000f000) << 4;
3164 invalid_tls_insn (input_bfd, input_section, rel);
3165 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
3167 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3168 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3171 else if (r_type == R_390_TLS_GDCALL)
3173 unsigned int insn0, insn1;
3175 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3176 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3177 if ((insn0 & 0xffff0000) != 0xc0e50000)
3178 invalid_tls_insn (input_bfd, input_section, rel);
3179 if (!info->shared && (h == NULL || h->dynindx == -1))
3181 /* GD->LE transition.
3182 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3188 /* GD->IE transition.
3189 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
3193 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3194 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3196 else if (r_type == R_390_TLS_LDCALL)
3200 unsigned int insn0, insn1;
3202 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3203 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3204 if ((insn0 & 0xffff0000) != 0xc0e50000)
3205 invalid_tls_insn (input_bfd, input_section, rel);
3206 /* LD->LE transition.
3207 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3210 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3211 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3220 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3221 because such sections are not SEC_ALLOC and thus ld.so will
3222 not process them. */
3223 if (unresolved_reloc
3224 && !((input_section->flags & SEC_DEBUGGING) != 0
3226 && _bfd_elf_section_offset (output_bfd, info, input_section,
3227 rel->r_offset) != (bfd_vma) -1)
3228 (*_bfd_error_handler)
3229 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3232 (long) rel->r_offset,
3234 h->root.root.string);
3238 /* When applying a 24 bit reloc we need to start one byte
3239 earlier. Otherwise the 32 bit get/put bfd operations might
3240 access a byte after the actual section. */
3241 if (r_type == R_390_PC24DBL
3242 || r_type == R_390_PLT24DBL)
3245 if (r_type == R_390_20
3246 || r_type == R_390_GOT20
3247 || r_type == R_390_GOTPLT20
3248 || r_type == R_390_TLS_GOTIE20)
3250 relocation += rel->r_addend;
3251 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3252 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3253 contents, rel->r_offset,
3257 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3258 contents, rel->r_offset,
3259 relocation, rel->r_addend);
3261 if (r != bfd_reloc_ok)
3266 name = h->root.root.string;
3269 name = bfd_elf_string_from_elf_section (input_bfd,
3270 symtab_hdr->sh_link,
3275 name = bfd_section_name (input_bfd, sec);
3278 if (r == bfd_reloc_overflow)
3281 if (! ((*info->callbacks->reloc_overflow)
3282 (info, (h ? &h->root : NULL), name, howto->name,
3283 (bfd_vma) 0, input_bfd, input_section,
3289 (*_bfd_error_handler)
3290 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3291 input_bfd, input_section,
3292 (long) rel->r_offset, name, (int) r);
3301 /* Generate the PLT slots together with the dynamic relocations needed
3302 for IFUNC symbols. */
3305 elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3306 struct bfd_link_info *info,
3307 struct elf_link_hash_entry *h,
3308 struct elf_s390_link_hash_table *htab,
3310 bfd_vma resolver_address)
3314 Elf_Internal_Rela rela;
3316 asection *plt, *gotplt, *relplt;
3318 if (htab->elf.iplt == NULL
3319 || htab->elf.igotplt == NULL
3320 || htab->elf.irelplt == NULL)
3323 /* Index of the PLT slot within iplt section. */
3324 plt_index = plt_offset / PLT_ENTRY_SIZE;
3325 plt = htab->elf.iplt;
3326 /* Offset into the igot.plt section. */
3327 got_offset = plt_index * GOT_ENTRY_SIZE;
3328 gotplt = htab->elf.igotplt;
3329 relplt = htab->elf.irelplt;
3331 /* Fill in the blueprint of a PLT. */
3332 memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
3335 /* Fixup the relative address to the GOT entry */
3336 bfd_put_32 (output_bfd,
3337 (gotplt->output_section->vma +
3338 gotplt->output_offset + got_offset
3339 - (plt->output_section->vma +
3340 plt->output_offset +
3342 plt->contents + plt_offset + 2);
3343 /* Fixup the relative branch to PLT 0 */
3344 bfd_put_32 (output_bfd, - (plt->output_offset +
3345 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3346 plt->contents + plt_offset + 24);
3347 /* Fixup offset into .rela.plt section. */
3348 bfd_put_32 (output_bfd, relplt->output_offset +
3349 plt_index * sizeof (Elf64_External_Rela),
3350 plt->contents + plt_offset + 28);
3352 /* Fill in the entry in the global offset table.
3353 Points to instruction after GOT offset. */
3354 bfd_put_64 (output_bfd,
3355 (plt->output_section->vma
3356 + plt->output_offset
3359 gotplt->contents + got_offset);
3361 /* Fill in the entry in the .rela.plt section. */
3362 rela.r_offset = (gotplt->output_section->vma
3363 + gotplt->output_offset
3368 || ((info->executable
3369 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3372 /* The symbol can be locally resolved. */
3373 rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
3374 rela.r_addend = resolver_address;
3378 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3382 loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
3383 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3387 /* Finish up dynamic symbol handling. We set the contents of various
3388 dynamic sections here. */
3391 elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3392 struct bfd_link_info *info,
3393 struct elf_link_hash_entry *h,
3394 Elf_Internal_Sym *sym)
3396 struct elf_s390_link_hash_table *htab;
3397 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
3399 htab = elf_s390_hash_table (info);
3403 if (h->plt.offset != (bfd_vma) -1)
3407 Elf_Internal_Rela rela;
3410 /* This symbol has an entry in the procedure linkage table. Set
3412 if (s390_is_ifunc_symbol_p (h))
3414 /* If we can resolve the IFUNC symbol locally we generate an
3416 elf_s390_finish_ifunc_symbol (output_bfd, info, h, htab, h->plt.offset,
3417 eh->ifunc_resolver_address +
3418 eh->ifunc_resolver_section->output_offset +
3419 eh->ifunc_resolver_section->output_section->vma);
3421 /* Fallthrough. Handling of explicit GOT slots of IFUNC
3422 symbols is below. */
3426 if (h->dynindx == -1
3427 || htab->elf.splt == NULL
3428 || htab->elf.sgotplt == NULL
3429 || htab->elf.srelplt == NULL)
3433 Current offset - size first entry / entry size. */
3434 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3436 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
3438 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3440 /* Fill in the blueprint of a PLT. */
3441 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
3444 /* Fixup the relative address to the GOT entry */
3445 bfd_put_32 (output_bfd,
3446 (htab->elf.sgotplt->output_section->vma +
3447 htab->elf.sgotplt->output_offset + got_offset
3448 - (htab->elf.splt->output_section->vma +
3449 htab->elf.splt->output_offset +
3451 htab->elf.splt->contents + h->plt.offset + 2);
3452 /* Fixup the relative branch to PLT 0 */
3453 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3454 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3455 htab->elf.splt->contents + h->plt.offset + 24);
3456 /* Fixup offset into .rela.plt section. */
3457 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3458 htab->elf.splt->contents + h->plt.offset + 28);
3460 /* Fill in the entry in the global offset table.
3461 Points to instruction after GOT offset. */
3462 bfd_put_64 (output_bfd,
3463 (htab->elf.splt->output_section->vma
3464 + htab->elf.splt->output_offset
3467 htab->elf.sgotplt->contents + got_offset);
3469 /* Fill in the entry in the .rela.plt section. */
3470 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3471 + htab->elf.sgotplt->output_offset
3473 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3475 loc = htab->elf.srelplt->contents + plt_index *
3476 sizeof (Elf64_External_Rela);
3477 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3479 if (!h->def_regular)
3481 /* Mark the symbol as undefined, rather than as defined in
3482 the .plt section. Leave the value alone. This is a clue
3483 for the dynamic linker, to make function pointer
3484 comparisons work between an application and shared
3486 sym->st_shndx = SHN_UNDEF;
3491 if (h->got.offset != (bfd_vma) -1
3492 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3493 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3494 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3496 Elf_Internal_Rela rela;
3499 /* This symbol has an entry in the global offset table. Set it
3501 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
3504 rela.r_offset = (htab->elf.sgot->output_section->vma
3505 + htab->elf.sgot->output_offset
3506 + (h->got.offset &~ (bfd_vma) 1));
3508 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3512 /* An explicit GOT slot usage needs GLOB_DAT. If the
3513 symbol references local the implicit got.iplt slot
3514 will be used and the IRELATIVE reloc has been created
3520 /* For non-shared objects explicit GOT slots must be
3521 filled with the PLT slot address for pointer
3522 equality reasons. */
3523 bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
3524 + htab->elf.iplt->output_offset
3526 htab->elf.sgot->contents + h->got.offset);
3530 else if (info->shared
3531 && SYMBOL_REFERENCES_LOCAL (info, h))
3533 /* If this is a static link, or it is a -Bsymbolic link and
3534 the symbol is defined locally or was forced to be local
3535 because of a version file, we just want to emit a
3536 RELATIVE reloc. The entry in the global offset table
3537 will already have been initialized in the
3538 relocate_section function. */
3539 if (!h->def_regular)
3541 BFD_ASSERT((h->got.offset & 1) != 0);
3542 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3543 rela.r_addend = (h->root.u.def.value
3544 + h->root.u.def.section->output_section->vma
3545 + h->root.u.def.section->output_offset);
3549 BFD_ASSERT((h->got.offset & 1) == 0);
3551 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
3552 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
3556 loc = htab->elf.srelgot->contents;
3557 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
3558 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3563 Elf_Internal_Rela rela;
3566 /* This symbols needs a copy reloc. Set it up. */
3568 if (h->dynindx == -1
3569 || (h->root.type != bfd_link_hash_defined
3570 && h->root.type != bfd_link_hash_defweak)
3571 || htab->srelbss == NULL)
3574 rela.r_offset = (h->root.u.def.value
3575 + h->root.u.def.section->output_section->vma
3576 + h->root.u.def.section->output_offset);
3577 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3579 loc = htab->srelbss->contents;
3580 loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
3581 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3584 /* Mark some specially defined symbols as absolute. */
3585 if (h == htab->elf.hdynamic
3586 || h == htab->elf.hgot
3587 || h == htab->elf.hplt)
3588 sym->st_shndx = SHN_ABS;
3593 /* Used to decide how to sort relocs in an optimal manner for the
3594 dynamic linker, before writing them out. */
3596 static enum elf_reloc_type_class
3597 elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3598 const asection *rel_sec ATTRIBUTE_UNUSED,
3599 const Elf_Internal_Rela *rela)
3601 switch ((int) ELF64_R_TYPE (rela->r_info))
3603 case R_390_RELATIVE:
3604 return reloc_class_relative;
3605 case R_390_JMP_SLOT:
3606 return reloc_class_plt;
3608 return reloc_class_copy;
3610 return reloc_class_normal;
3614 /* Finish up the dynamic sections. */
3617 elf_s390_finish_dynamic_sections (bfd *output_bfd,
3618 struct bfd_link_info *info)
3620 struct elf_s390_link_hash_table *htab;
3626 htab = elf_s390_hash_table (info);
3630 dynobj = htab->elf.dynobj;
3631 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3633 if (htab->elf.dynamic_sections_created)
3635 Elf64_External_Dyn *dyncon, *dynconend;
3637 if (sdyn == NULL || htab->elf.sgot == NULL)
3640 dyncon = (Elf64_External_Dyn *) sdyn->contents;
3641 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
3642 for (; dyncon < dynconend; dyncon++)
3644 Elf_Internal_Dyn dyn;
3647 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
3655 dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma;
3659 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
3663 s = htab->elf.srelplt->output_section;
3664 dyn.d_un.d_val = s->size;
3668 /* The procedure linkage table relocs (DT_JMPREL) should
3669 not be included in the overall relocs (DT_RELA).
3670 Therefore, we override the DT_RELASZ entry here to
3671 make it not include the JMPREL relocs. Since the
3672 linker script arranges for .rela.plt to follow all
3673 other relocation sections, we don't have to worry
3674 about changing the DT_RELA entry. */
3675 s = htab->elf.srelplt->output_section;
3676 dyn.d_un.d_val -= s->size;
3680 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
3683 /* Fill in the special first entry in the procedure linkage table. */
3684 if (htab->elf.splt && htab->elf.splt->size > 0)
3686 /* fill in blueprint for plt 0 entry */
3687 memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
3688 PLT_FIRST_ENTRY_SIZE);
3689 /* Fixup relative address to start of GOT */
3690 bfd_put_32 (output_bfd,
3691 (htab->elf.sgotplt->output_section->vma +
3692 htab->elf.sgotplt->output_offset
3693 - htab->elf.splt->output_section->vma - 6)/2,
3694 htab->elf.splt->contents + 8);
3696 if (elf_section_data (htab->elf.splt->output_section) != NULL)
3697 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
3701 if (htab->elf.sgotplt)
3703 /* Fill in the first three entries in the global offset table. */
3704 if (htab->elf.sgotplt->size > 0)
3706 bfd_put_64 (output_bfd,
3707 (sdyn == NULL ? (bfd_vma) 0
3708 : sdyn->output_section->vma + sdyn->output_offset),
3709 htab->elf.sgotplt->contents);
3710 /* One entry for shared object struct ptr. */
3711 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
3712 /* One entry for _dl_runtime_resolve. */
3713 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 12);
3716 elf_section_data (htab->elf.sgot->output_section)
3717 ->this_hdr.sh_entsize = 8;
3720 /* Finish dynamic symbol for local IFUNC symbols. */
3721 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3723 struct plt_entry *local_plt;
3724 Elf_Internal_Sym *isym;
3725 Elf_Internal_Shdr *symtab_hdr;
3727 symtab_hdr = &elf_symtab_hdr (ibfd);
3729 local_plt = elf_s390_local_plt (ibfd);
3730 if (local_plt != NULL)
3731 for (i = 0; i < symtab_hdr->sh_info; i++)
3733 if (local_plt[i].plt.offset != (bfd_vma) -1)
3735 asection *sec = local_plt[i].sec;
3736 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3740 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3741 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3742 local_plt[i].plt.offset,
3744 + sec->output_section->vma
3745 + sec->output_offset);
3754 /* Return address for Ith PLT stub in section PLT, for relocation REL
3755 or (bfd_vma) -1 if it should not be included. */
3758 elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3759 const arelent *rel ATTRIBUTE_UNUSED)
3761 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3764 /* Why was the hash table entry size definition changed from
3765 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3766 this is the only reason for the s390_elf64_size_info structure. */
3768 const struct elf_size_info s390_elf64_size_info =
3770 sizeof (Elf64_External_Ehdr),
3771 sizeof (Elf64_External_Phdr),
3772 sizeof (Elf64_External_Shdr),
3773 sizeof (Elf64_External_Rel),
3774 sizeof (Elf64_External_Rela),
3775 sizeof (Elf64_External_Sym),
3776 sizeof (Elf64_External_Dyn),
3777 sizeof (Elf_External_Note),
3778 8, /* hash-table entry size. */
3779 1, /* internal relocations per external relocations. */
3780 64, /* arch_size. */
3781 3, /* log_file_align. */
3782 ELFCLASS64, EV_CURRENT,
3783 bfd_elf64_write_out_phdrs,
3784 bfd_elf64_write_shdrs_and_ehdr,
3785 bfd_elf64_checksum_contents,
3786 bfd_elf64_write_relocs,
3787 bfd_elf64_swap_symbol_in,
3788 bfd_elf64_swap_symbol_out,
3789 bfd_elf64_slurp_reloc_table,
3790 bfd_elf64_slurp_symbol_table,
3791 bfd_elf64_swap_dyn_in,
3792 bfd_elf64_swap_dyn_out,
3793 bfd_elf64_swap_reloc_in,
3794 bfd_elf64_swap_reloc_out,
3795 bfd_elf64_swap_reloca_in,
3796 bfd_elf64_swap_reloca_out
3799 #define TARGET_BIG_SYM bfd_elf64_s390_vec
3800 #define TARGET_BIG_NAME "elf64-s390"
3801 #define ELF_ARCH bfd_arch_s390
3802 #define ELF_TARGET_ID S390_ELF_DATA
3803 #define ELF_MACHINE_CODE EM_S390
3804 #define ELF_MACHINE_ALT1 EM_S390_OLD
3805 #define ELF_MAXPAGESIZE 0x1000
3807 #define elf_backend_size_info s390_elf64_size_info
3809 #define elf_backend_can_gc_sections 1
3810 #define elf_backend_can_refcount 1
3811 #define elf_backend_want_got_plt 1
3812 #define elf_backend_plt_readonly 1
3813 #define elf_backend_want_plt_sym 0
3814 #define elf_backend_got_header_size 24
3815 #define elf_backend_rela_normal 1
3817 #define elf_info_to_howto elf_s390_info_to_howto
3819 #define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3820 #define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3821 #define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3822 #define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
3824 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3825 #define elf_backend_check_relocs elf_s390_check_relocs
3826 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3827 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3828 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3829 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3830 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3831 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3832 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3833 #define elf_backend_relocate_section elf_s390_relocate_section
3834 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3835 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3836 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
3837 #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
3839 #define bfd_elf64_mkobject elf_s390_mkobject
3840 #define elf_backend_object_p elf_s390_object_p
3842 /* Enable ELF64 archive functions. */
3843 #define bfd_elf64_archive_functions
3844 extern bfd_boolean bfd_elf64_archive_slurp_armap (bfd *);
3845 extern bfd_boolean bfd_elf64_archive_write_armap (bfd *, unsigned int, struct orl *, unsigned int, int);
3847 #define bfd_elf64_archive_slurp_extended_name_table _bfd_archive_coff_slurp_extended_name_table
3848 #define bfd_elf64_archive_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table
3849 #define bfd_elf64_archive_truncate_arname _bfd_archive_coff_truncate_arname
3850 #define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr
3851 #define bfd_elf64_archive_write_ar_hdr _bfd_archive_coff_write_ar_hdr
3852 #define bfd_elf64_archive_openr_next_archived_file _bfd_archive_coff_openr_next_archived_file
3853 #define bfd_elf64_archive_get_elt_at_index _bfd_archive_coff_get_elt_at_index
3854 #define bfd_elf64_archive_generic_stat_arch_elt _bfd_archive_coff_generic_stat_arch_elt
3855 #define bfd_elf64_archive_update_armap_timestamp _bfd_archive_coff_update_armap_timestamp
3857 #include "elf64-target.h"