1 /* IBM S/390-specific support for 32-bit ELF
2 Copyright (C) 2000-2018 Free Software Foundation, Inc.
3 Contributed by Carl B. Pedersen and Martin Schwidefsky.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
30 static bfd_reloc_status_type
31 s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
32 asection *, bfd *, char **);
33 static bfd_reloc_status_type
34 s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
35 asection *, bfd *, char **);
37 /* The relocation "howto" table. */
39 static reloc_howto_type elf_howto_table[] =
41 HOWTO (R_390_NONE, /* type */
43 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
45 FALSE, /* pc_relative */
47 complain_overflow_dont, /* complain_on_overflow */
48 bfd_elf_generic_reloc, /* special_function */
49 "R_390_NONE", /* name */
50 FALSE, /* partial_inplace */
53 FALSE), /* pcrel_offset */
55 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
56 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
57 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
58 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
59 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
60 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
61 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
62 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
63 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
64 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
65 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
66 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
67 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
68 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
69 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
70 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
71 HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
72 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
73 HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
74 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
75 HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
76 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
77 HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
78 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
79 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
80 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
81 HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
82 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
83 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
84 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
85 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
86 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
87 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
88 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
89 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
90 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
91 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
92 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
93 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
94 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
95 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
96 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
97 EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
98 EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
99 EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
100 EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
101 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
102 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
103 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
104 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
105 EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
106 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
107 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
108 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
109 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
110 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
111 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
112 EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
113 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
114 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE),
115 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
116 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
117 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
118 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
119 EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
120 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
121 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
122 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
123 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
124 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
125 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
126 HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE),
128 EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */
129 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
130 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
131 HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
132 bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE),
133 EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */
134 HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
135 bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE),
136 EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */
137 HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE),
139 EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */
140 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
141 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE),
142 HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
143 bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE),
144 EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */
145 HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE),
147 EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */
148 HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE),
150 HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE),
152 HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
153 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE),
154 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
155 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
156 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
157 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
158 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
159 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
160 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
161 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
162 HOWTO(R_390_IRELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, 0xffffffff, FALSE),
164 HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
165 bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
166 HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
167 bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
168 HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
169 bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
170 HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
171 bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
174 /* GNU extension to record C++ vtable hierarchy. */
175 static reloc_howto_type elf32_s390_vtinherit_howto =
176 HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
177 static reloc_howto_type elf32_s390_vtentry_howto =
178 HOWTO (R_390_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
180 static reloc_howto_type *
181 elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
182 bfd_reloc_code_real_type code)
187 return &elf_howto_table[(int) R_390_NONE];
189 return &elf_howto_table[(int) R_390_8];
190 case BFD_RELOC_390_12:
191 return &elf_howto_table[(int) R_390_12];
193 return &elf_howto_table[(int) R_390_16];
195 return &elf_howto_table[(int) R_390_32];
197 return &elf_howto_table[(int) R_390_32];
198 case BFD_RELOC_32_PCREL:
199 return &elf_howto_table[(int) R_390_PC32];
200 case BFD_RELOC_390_GOT12:
201 return &elf_howto_table[(int) R_390_GOT12];
202 case BFD_RELOC_32_GOT_PCREL:
203 return &elf_howto_table[(int) R_390_GOT32];
204 case BFD_RELOC_390_PLT32:
205 return &elf_howto_table[(int) R_390_PLT32];
206 case BFD_RELOC_390_COPY:
207 return &elf_howto_table[(int) R_390_COPY];
208 case BFD_RELOC_390_GLOB_DAT:
209 return &elf_howto_table[(int) R_390_GLOB_DAT];
210 case BFD_RELOC_390_JMP_SLOT:
211 return &elf_howto_table[(int) R_390_JMP_SLOT];
212 case BFD_RELOC_390_RELATIVE:
213 return &elf_howto_table[(int) R_390_RELATIVE];
214 case BFD_RELOC_32_GOTOFF:
215 return &elf_howto_table[(int) R_390_GOTOFF32];
216 case BFD_RELOC_390_GOTPC:
217 return &elf_howto_table[(int) R_390_GOTPC];
218 case BFD_RELOC_390_GOT16:
219 return &elf_howto_table[(int) R_390_GOT16];
220 case BFD_RELOC_16_PCREL:
221 return &elf_howto_table[(int) R_390_PC16];
222 case BFD_RELOC_390_PC12DBL:
223 return &elf_howto_table[(int) R_390_PC12DBL];
224 case BFD_RELOC_390_PLT12DBL:
225 return &elf_howto_table[(int) R_390_PLT12DBL];
226 case BFD_RELOC_390_PC16DBL:
227 return &elf_howto_table[(int) R_390_PC16DBL];
228 case BFD_RELOC_390_PLT16DBL:
229 return &elf_howto_table[(int) R_390_PLT16DBL];
230 case BFD_RELOC_390_PC24DBL:
231 return &elf_howto_table[(int) R_390_PC24DBL];
232 case BFD_RELOC_390_PLT24DBL:
233 return &elf_howto_table[(int) R_390_PLT24DBL];
234 case BFD_RELOC_390_PC32DBL:
235 return &elf_howto_table[(int) R_390_PC32DBL];
236 case BFD_RELOC_390_PLT32DBL:
237 return &elf_howto_table[(int) R_390_PLT32DBL];
238 case BFD_RELOC_390_GOTPCDBL:
239 return &elf_howto_table[(int) R_390_GOTPCDBL];
240 case BFD_RELOC_390_GOTENT:
241 return &elf_howto_table[(int) R_390_GOTENT];
242 case BFD_RELOC_16_GOTOFF:
243 return &elf_howto_table[(int) R_390_GOTOFF16];
244 case BFD_RELOC_390_GOTPLT12:
245 return &elf_howto_table[(int) R_390_GOTPLT12];
246 case BFD_RELOC_390_GOTPLT16:
247 return &elf_howto_table[(int) R_390_GOTPLT16];
248 case BFD_RELOC_390_GOTPLT32:
249 return &elf_howto_table[(int) R_390_GOTPLT32];
250 case BFD_RELOC_390_GOTPLTENT:
251 return &elf_howto_table[(int) R_390_GOTPLTENT];
252 case BFD_RELOC_390_PLTOFF16:
253 return &elf_howto_table[(int) R_390_PLTOFF16];
254 case BFD_RELOC_390_PLTOFF32:
255 return &elf_howto_table[(int) R_390_PLTOFF32];
256 case BFD_RELOC_390_TLS_LOAD:
257 return &elf_howto_table[(int) R_390_TLS_LOAD];
258 case BFD_RELOC_390_TLS_GDCALL:
259 return &elf_howto_table[(int) R_390_TLS_GDCALL];
260 case BFD_RELOC_390_TLS_LDCALL:
261 return &elf_howto_table[(int) R_390_TLS_LDCALL];
262 case BFD_RELOC_390_TLS_GD32:
263 return &elf_howto_table[(int) R_390_TLS_GD32];
264 case BFD_RELOC_390_TLS_GOTIE12:
265 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
266 case BFD_RELOC_390_TLS_GOTIE32:
267 return &elf_howto_table[(int) R_390_TLS_GOTIE32];
268 case BFD_RELOC_390_TLS_LDM32:
269 return &elf_howto_table[(int) R_390_TLS_LDM32];
270 case BFD_RELOC_390_TLS_IE32:
271 return &elf_howto_table[(int) R_390_TLS_IE32];
272 case BFD_RELOC_390_TLS_IEENT:
273 return &elf_howto_table[(int) R_390_TLS_IEENT];
274 case BFD_RELOC_390_TLS_LE32:
275 return &elf_howto_table[(int) R_390_TLS_LE32];
276 case BFD_RELOC_390_TLS_LDO32:
277 return &elf_howto_table[(int) R_390_TLS_LDO32];
278 case BFD_RELOC_390_TLS_DTPMOD:
279 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
280 case BFD_RELOC_390_TLS_DTPOFF:
281 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
282 case BFD_RELOC_390_TLS_TPOFF:
283 return &elf_howto_table[(int) R_390_TLS_TPOFF];
284 case BFD_RELOC_390_20:
285 return &elf_howto_table[(int) R_390_20];
286 case BFD_RELOC_390_GOT20:
287 return &elf_howto_table[(int) R_390_GOT20];
288 case BFD_RELOC_390_GOTPLT20:
289 return &elf_howto_table[(int) R_390_GOTPLT20];
290 case BFD_RELOC_390_TLS_GOTIE20:
291 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
292 case BFD_RELOC_390_IRELATIVE:
293 return &elf_howto_table[(int) R_390_IRELATIVE];
294 case BFD_RELOC_VTABLE_INHERIT:
295 return &elf32_s390_vtinherit_howto;
296 case BFD_RELOC_VTABLE_ENTRY:
297 return &elf32_s390_vtentry_howto;
304 static reloc_howto_type *
305 elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
310 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
311 if (elf_howto_table[i].name != NULL
312 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
313 return &elf_howto_table[i];
315 if (strcasecmp (elf32_s390_vtinherit_howto.name, r_name) == 0)
316 return &elf32_s390_vtinherit_howto;
317 if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0)
318 return &elf32_s390_vtentry_howto;
323 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
324 and elf32-s390.c has its own copy. */
327 elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
329 Elf_Internal_Rela *dst)
331 unsigned int r_type = ELF32_R_TYPE(dst->r_info);
334 case R_390_GNU_VTINHERIT:
335 cache_ptr->howto = &elf32_s390_vtinherit_howto;
338 case R_390_GNU_VTENTRY:
339 cache_ptr->howto = &elf32_s390_vtentry_howto;
343 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
345 /* xgettext:c-format */
346 _bfd_error_handler (_("%pB: invalid relocation type %d"),
350 cache_ptr->howto = &elf_howto_table[r_type];
354 /* A relocation function which doesn't do anything. */
355 static bfd_reloc_status_type
356 s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
357 arelent *reloc_entry,
358 asymbol *symbol ATTRIBUTE_UNUSED,
359 void * data ATTRIBUTE_UNUSED,
360 asection *input_section,
362 char **error_message ATTRIBUTE_UNUSED)
365 reloc_entry->address += input_section->output_offset;
369 /* Handle the large displacement relocs. */
370 static bfd_reloc_status_type
371 s390_elf_ldisp_reloc (bfd *abfd ATTRIBUTE_UNUSED,
372 arelent *reloc_entry,
374 void * data ATTRIBUTE_UNUSED,
375 asection *input_section,
377 char **error_message ATTRIBUTE_UNUSED)
379 reloc_howto_type *howto = reloc_entry->howto;
383 if (output_bfd != (bfd *) NULL
384 && (symbol->flags & BSF_SECTION_SYM) == 0
385 && (! howto->partial_inplace
386 || reloc_entry->addend == 0))
388 reloc_entry->address += input_section->output_offset;
392 if (output_bfd != NULL)
393 return bfd_reloc_continue;
395 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
396 return bfd_reloc_outofrange;
398 relocation = (symbol->value
399 + symbol->section->output_section->vma
400 + symbol->section->output_offset);
401 relocation += reloc_entry->addend;
402 if (howto->pc_relative)
404 relocation -= (input_section->output_section->vma
405 + input_section->output_offset);
406 relocation -= reloc_entry->address;
409 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
410 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
411 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
413 if ((bfd_signed_vma) relocation < - 0x80000
414 || (bfd_signed_vma) relocation > 0x7ffff)
415 return bfd_reloc_overflow;
421 elf_s390_is_local_label_name (bfd *abfd, const char *name)
423 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
426 return _bfd_elf_is_local_label_name (abfd, name);
429 /* Functions for the 390 ELF linker. */
431 /* The name of the dynamic interpreter. This is put in the .interp
434 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
436 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
437 copying dynamic variables from a shared lib into an app's dynbss
438 section, and instead use a dynamic relocation to point into the
440 #define ELIMINATE_COPY_RELOCS 1
442 /* The size in bytes of the first entry in the procedure linkage table. */
443 #define PLT_FIRST_ENTRY_SIZE 32
444 /* The size in bytes of an entry in the procedure linkage table. */
445 #define PLT_ENTRY_SIZE 32
447 #define GOT_ENTRY_SIZE 4
449 #define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela)
451 /* The first three entries in a procedure linkage table are reserved,
452 and the initial contents are unimportant (we zero them out).
453 Subsequent entries look like this. See the SVR4 ABI 386
454 supplement to see how this works. */
456 /* For the s390, simple addr offset can only be 0 - 4096.
457 To use the full 2 GB address space, several instructions
458 are needed to load an address in a register and execute
459 a branch( or just saving the address)
461 Furthermore, only r 0 and 1 are free to use!!! */
463 /* The first 3 words in the GOT are then reserved.
464 Word 0 is the address of the dynamic table.
465 Word 1 is a pointer to a structure describing the object
466 Word 2 is used to point to the loader entry address.
468 The code for position independent PLT entries looks like this:
470 r12 holds addr of the current GOT at entry to the PLT
472 The GOT holds the address in the PLT to be executed.
473 The loader then gets:
474 24(15) = Pointer to the structure describing the object.
475 28(15) = Offset into rela.plt
477 The loader must then find the module where the function is
478 and insert the address in the GOT.
480 Note: 390 can only address +- 64 K relative.
481 We check if offset > 65536, then make a relative branch -64xxx
482 back to a previous defined branch
484 PLT1: BASR 1,0 # 2 bytes
485 L 1,22(1) # 4 bytes Load offset in GOT in r 1
486 L 1,(1,12) # 4 bytes Load address from GOT in r1
487 BCR 15,1 # 2 bytes Jump to address
488 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
489 L 1,14(1) # 4 bytes Load offset in symol table in r1
490 BRC 15,-x # 4 bytes Jump to start of PLT
491 .word 0 # 2 bytes filler
492 .long ? # 4 bytes offset in GOT
493 .long ? # 4 bytes offset into rela.plt
495 This was the general case. There are two additional, optimizes PLT
496 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
497 First the one for GOT offsets < 4096:
499 PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
500 BCR 15,1 # 2 bytes Jump to address
501 .word 0,0,0 # 6 bytes filler
502 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
503 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
504 BRC 15,-x # 4 bytes Jump to start of PLT
505 .word 0,0,0 # 6 bytes filler
506 .long ? # 4 bytes offset into rela.plt
508 Second the one for GOT offsets < 32768:
510 PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
511 L 1,(1,12) # 4 bytes Load address from GOT to r1
512 BCR 15,1 # 2 bytes Jump to address
513 .word 0 # 2 bytes filler
514 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
515 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
516 BRC 15,-x # 4 bytes Jump to start of PLT
517 .word 0,0,0 # 6 bytes filler
518 .long ? # 4 bytes offset into rela.plt
520 Total = 32 bytes per PLT entry
522 The code for static build PLT entries looks like this:
524 PLT1: BASR 1,0 # 2 bytes
525 L 1,22(1) # 4 bytes Load address of GOT entry
526 L 1,0(0,1) # 4 bytes Load address from GOT in r1
527 BCR 15,1 # 2 bytes Jump to address
528 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
529 L 1,14(1) # 4 bytes Load offset in symbol table in r1
530 BRC 15,-x # 4 bytes Jump to start of PLT
531 .word 0 # 2 bytes filler
532 .long ? # 4 bytes address of GOT entry
533 .long ? # 4 bytes offset into rela.plt */
535 static const bfd_byte elf_s390_plt_entry[PLT_ENTRY_SIZE] =
537 0x0d, 0x10, /* basr %r1,%r0 */
538 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
539 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */
540 0x07, 0xf1, /* br %r1 */
541 0x0d, 0x10, /* basr %r1,%r0 */
542 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
543 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
544 0x00, 0x00, /* padding */
545 0x00, 0x00, 0x00, 0x00, /* GOT offset */
546 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
549 /* Generic PLT pic entry. */
550 static const bfd_byte elf_s390_plt_pic_entry[PLT_ENTRY_SIZE] =
552 0x0d, 0x10, /* basr %r1,%r0 */
553 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
554 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
555 0x07, 0xf1, /* br %r1 */
556 0x0d, 0x10, /* basr %r1,%r0 */
557 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
558 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
559 0x00, 0x00, /* padding */
560 0x00, 0x00, 0x00, 0x00, /* GOT offset */
561 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
564 /* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced
565 when generating the PLT slot with the GOT offset. */
566 static const bfd_byte elf_s390_plt_pic12_entry[PLT_ENTRY_SIZE] =
568 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */
569 0x07, 0xf1, /* br %r1 */
570 0x00, 0x00, 0x00, 0x00, /* padding */
572 0x0d, 0x10, /* basr %r1,%r0 */
573 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
574 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
575 0x00, 0x00, 0x00, 0x00,
576 0x00, 0x00, 0x00, 0x00
579 /* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced
580 when generating the PLT slot with the GOT offset. */
581 static const bfd_byte elf_s390_plt_pic16_entry[PLT_ENTRY_SIZE] =
583 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */
584 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
585 0x07, 0xf1, /* br %r1 */
587 0x0d, 0x10, /* basr %r1,%r0 */
588 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
589 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
590 0x00, 0x00, 0x00, 0x00,
591 0x00, 0x00, 0x00, 0x00,
595 /* The first PLT entry pushes the offset into the rela.plt
596 from R1 onto the stack at 8(15) and the loader object info
597 at 12(15), loads the loader address in R1 and jumps to it. */
599 /* The first entry in the PLT for PIC code:
602 ST 1,28(15) # R1 has offset into rela.plt
603 L 1,4(12) # Get loader ino(object struct address)
604 ST 1,24(15) # Store address
605 L 1,8(12) # Entry address of loader in R1
606 BR 1 # Jump to loader
608 The first entry in the PLT for static code:
611 ST 1,28(15) # R1 has offset into rela.plt
613 L 1,18(0,1) # Get address of GOT
614 MVC 24(4,15),4(1) # Move loader ino to stack
615 L 1,8(1) # Get address of loader
616 BR 1 # Jump to loader
618 .long got # address of GOT */
620 static const bfd_byte elf_s390_plt_first_entry[PLT_FIRST_ENTRY_SIZE] =
622 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
623 0x0d, 0x10, /* basr %r1,%r0 */
624 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */
625 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */
626 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */
627 0x07, 0xf1, /* br %r1 */
628 0x00, 0x00, 0x00, 0x00,
629 0x00, 0x00, 0x00, 0x00,
633 static const bfd_byte elf_s390_plt_pic_first_entry[PLT_FIRST_ENTRY_SIZE] =
635 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
636 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */
637 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */
638 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */
639 0x07, 0xf1, /* br %r1 */
640 0x00, 0x00, 0x00, 0x00,
641 0x00, 0x00, 0x00, 0x00,
642 0x00, 0x00, 0x00, 0x00,
647 /* s390 ELF linker hash entry. */
649 struct elf_s390_link_hash_entry
651 struct elf_link_hash_entry elf;
653 /* Track dynamic relocs copied for this symbol. */
654 struct elf_dyn_relocs *dyn_relocs;
656 /* Number of GOTPLT references for a function. */
657 bfd_signed_vma gotplt_refcount;
659 #define GOT_UNKNOWN 0
663 #define GOT_TLS_IE_NLT 4
664 unsigned char tls_type;
666 /* For pointer equality reasons we might need to change the symbol
667 type from STT_GNU_IFUNC to STT_FUNC together with its value and
668 section entry. So after alloc_dynrelocs only these values should
669 be used. In order to check whether a symbol is IFUNC use
670 s390_is_ifunc_symbol_p. */
671 bfd_vma ifunc_resolver_address;
672 asection *ifunc_resolver_section;
675 #define elf_s390_hash_entry(ent) \
676 ((struct elf_s390_link_hash_entry *)(ent))
678 /* This structure represents an entry in the local PLT list needed for
679 local IFUNC symbols. */
682 /* The section of the local symbol.
683 Set in relocate_section and used in finish_dynamic_sections. */
688 bfd_signed_vma refcount;
693 /* NOTE: Keep this structure in sync with
694 the one declared in elf64-s390.c. */
695 struct elf_s390_obj_tdata
697 struct elf_obj_tdata root;
699 /* A local PLT is needed for ifunc symbols. */
700 struct plt_entry *local_plt;
702 /* TLS type for each local got entry. */
703 char *local_got_tls_type;
706 #define elf_s390_tdata(abfd) \
707 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
709 #define elf_s390_local_plt(abfd) \
710 (elf_s390_tdata (abfd)->local_plt)
712 #define elf_s390_local_got_tls_type(abfd) \
713 (elf_s390_tdata (abfd)->local_got_tls_type)
715 #define is_s390_elf(bfd) \
716 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
717 && elf_tdata (bfd) != NULL \
718 && elf_object_id (bfd) == S390_ELF_DATA)
721 elf_s390_mkobject (bfd *abfd)
723 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
728 elf_s390_object_p (bfd *abfd)
730 /* Set the right machine number for an s390 elf32 file. */
731 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
734 /* s390 ELF linker hash table. */
736 struct elf_s390_link_hash_table
738 struct elf_link_hash_table elf;
740 /* Short-cuts to get to dynamic linker sections. */
745 bfd_signed_vma refcount;
749 /* Small local sym cache. */
750 struct sym_cache sym_cache;
753 /* Get the s390 ELF linker hash table from a link_info structure. */
755 #define elf_s390_hash_table(p) \
756 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
757 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
760 #include "elf-s390-common.c"
762 /* Create an entry in an s390 ELF linker hash table. */
764 static struct bfd_hash_entry *
765 link_hash_newfunc (struct bfd_hash_entry *entry,
766 struct bfd_hash_table *table,
769 /* Allocate the structure if it has not already been allocated by a
773 entry = bfd_hash_allocate (table,
774 sizeof (struct elf_s390_link_hash_entry));
779 /* Call the allocation method of the superclass. */
780 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
783 struct elf_s390_link_hash_entry *eh;
785 eh = (struct elf_s390_link_hash_entry *) entry;
786 eh->dyn_relocs = NULL;
787 eh->gotplt_refcount = 0;
788 eh->tls_type = GOT_UNKNOWN;
789 eh->ifunc_resolver_address = 0;
790 eh->ifunc_resolver_section = NULL;
796 /* Create an s390 ELF linker hash table. */
798 static struct bfd_link_hash_table *
799 elf_s390_link_hash_table_create (bfd *abfd)
801 struct elf_s390_link_hash_table *ret;
802 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
804 ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
808 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
809 sizeof (struct elf_s390_link_hash_entry),
816 return &ret->elf.root;
819 /* Copy the extra info we tack onto an elf_link_hash_entry. */
822 elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
823 struct elf_link_hash_entry *dir,
824 struct elf_link_hash_entry *ind)
826 struct elf_s390_link_hash_entry *edir, *eind;
828 edir = (struct elf_s390_link_hash_entry *) dir;
829 eind = (struct elf_s390_link_hash_entry *) ind;
831 if (eind->dyn_relocs != NULL)
833 if (edir->dyn_relocs != NULL)
835 struct elf_dyn_relocs **pp;
836 struct elf_dyn_relocs *p;
838 /* Add reloc counts against the indirect sym to the direct sym
839 list. Merge any entries against the same section. */
840 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
842 struct elf_dyn_relocs *q;
844 for (q = edir->dyn_relocs; q != NULL; q = q->next)
845 if (q->sec == p->sec)
847 q->pc_count += p->pc_count;
848 q->count += p->count;
855 *pp = edir->dyn_relocs;
858 edir->dyn_relocs = eind->dyn_relocs;
859 eind->dyn_relocs = NULL;
862 if (ind->root.type == bfd_link_hash_indirect
863 && dir->got.refcount <= 0)
865 edir->tls_type = eind->tls_type;
866 eind->tls_type = GOT_UNKNOWN;
869 if (ELIMINATE_COPY_RELOCS
870 && ind->root.type != bfd_link_hash_indirect
871 && dir->dynamic_adjusted)
873 /* If called to transfer flags for a weakdef during processing
874 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
875 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
876 if (dir->versioned != versioned_hidden)
877 dir->ref_dynamic |= ind->ref_dynamic;
878 dir->ref_regular |= ind->ref_regular;
879 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
880 dir->needs_plt |= ind->needs_plt;
883 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
887 elf_s390_tls_transition (struct bfd_link_info *info,
891 if (bfd_link_pic (info))
899 return R_390_TLS_LE32;
900 return R_390_TLS_IE32;
901 case R_390_TLS_GOTIE32:
903 return R_390_TLS_LE32;
904 return R_390_TLS_GOTIE32;
905 case R_390_TLS_LDM32:
906 return R_390_TLS_LE32;
912 /* Look through the relocs for a section during the first phase, and
913 allocate space in the global offset table or procedure linkage
917 elf_s390_check_relocs (bfd *abfd,
918 struct bfd_link_info *info,
920 const Elf_Internal_Rela *relocs)
922 struct elf_s390_link_hash_table *htab;
923 Elf_Internal_Shdr *symtab_hdr;
924 struct elf_link_hash_entry **sym_hashes;
925 const Elf_Internal_Rela *rel;
926 const Elf_Internal_Rela *rel_end;
928 bfd_signed_vma *local_got_refcounts;
929 int tls_type, old_tls_type;
930 Elf_Internal_Sym *isym;
932 if (bfd_link_relocatable (info))
935 BFD_ASSERT (is_s390_elf (abfd));
937 htab = elf_s390_hash_table (info);
938 symtab_hdr = &elf_symtab_hdr (abfd);
939 sym_hashes = elf_sym_hashes (abfd);
940 local_got_refcounts = elf_local_got_refcounts (abfd);
944 rel_end = relocs + sec->reloc_count;
945 for (rel = relocs; rel < rel_end; rel++)
948 unsigned int r_symndx;
949 struct elf_link_hash_entry *h;
951 r_symndx = ELF32_R_SYM (rel->r_info);
953 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
955 /* xgettext:c-format */
956 _bfd_error_handler (_("%pB: bad symbol index: %d"),
961 if (r_symndx < symtab_hdr->sh_info)
963 /* A local symbol. */
964 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
969 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
971 struct plt_entry *plt;
973 if (htab->elf.dynobj == NULL)
974 htab->elf.dynobj = abfd;
976 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
979 if (local_got_refcounts == NULL)
981 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
983 local_got_refcounts = elf_local_got_refcounts (abfd);
985 plt = elf_s390_local_plt (abfd);
986 plt[r_symndx].plt.refcount++;
992 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
993 while (h->root.type == bfd_link_hash_indirect
994 || h->root.type == bfd_link_hash_warning)
995 h = (struct elf_link_hash_entry *) h->root.u.i.link;
998 /* Create got section and local_got_refcounts array if they
1000 r_type = elf_s390_tls_transition (info,
1001 ELF32_R_TYPE (rel->r_info),
1010 case R_390_GOTPLT12:
1011 case R_390_GOTPLT16:
1012 case R_390_GOTPLT20:
1013 case R_390_GOTPLT32:
1014 case R_390_GOTPLTENT:
1015 case R_390_TLS_GD32:
1016 case R_390_TLS_GOTIE12:
1017 case R_390_TLS_GOTIE20:
1018 case R_390_TLS_GOTIE32:
1019 case R_390_TLS_IEENT:
1020 case R_390_TLS_IE32:
1021 case R_390_TLS_LDM32:
1023 && local_got_refcounts == NULL)
1025 if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
1027 local_got_refcounts = elf_local_got_refcounts (abfd);
1030 case R_390_GOTOFF16:
1031 case R_390_GOTOFF32:
1033 case R_390_GOTPCDBL:
1034 if (htab->elf.sgot == NULL)
1036 if (htab->elf.dynobj == NULL)
1037 htab->elf.dynobj = abfd;
1038 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
1045 if (htab->elf.dynobj == NULL)
1046 htab->elf.dynobj = abfd;
1047 if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1050 /* Make sure an IFUNC symbol defined in a non-shared object
1051 always gets a PLT slot. */
1052 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1054 /* The symbol is called by the dynamic loader in order
1055 to resolve the relocation. So it is in fact also
1064 case R_390_GOTPCDBL:
1065 /* These relocs do not need a GOT slot. They just load the
1066 GOT pointer itself or address something else relative to
1067 the GOT. Since the GOT pointer has been set up above we
1070 case R_390_GOTOFF16:
1071 case R_390_GOTOFF32:
1072 if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
1076 case R_390_PLT12DBL:
1077 case R_390_PLT16DBL:
1078 case R_390_PLT24DBL:
1079 case R_390_PLT32DBL:
1081 case R_390_PLTOFF16:
1082 case R_390_PLTOFF32:
1083 /* This symbol requires a procedure linkage table entry. We
1084 actually build the entry in adjust_dynamic_symbol,
1085 because this might be a case of linking PIC code which is
1086 never referenced by a dynamic object, in which case we
1087 don't need to generate a procedure linkage table entry
1090 /* If this is a local symbol, we resolve it directly without
1091 creating a procedure linkage table entry. */
1095 h->plt.refcount += 1;
1099 case R_390_GOTPLT12:
1100 case R_390_GOTPLT16:
1101 case R_390_GOTPLT20:
1102 case R_390_GOTPLT32:
1103 case R_390_GOTPLTENT:
1104 /* This symbol requires either a procedure linkage table entry
1105 or an entry in the local got. We actually build the entry
1106 in adjust_dynamic_symbol because whether this is really a
1107 global reference can change and with it the fact if we have
1108 to create a plt entry or a local got entry. To be able to
1109 make a once global symbol a local one we have to keep track
1110 of the number of gotplt references that exist for this
1114 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1116 h->plt.refcount += 1;
1119 local_got_refcounts[r_symndx] += 1;
1122 case R_390_TLS_LDM32:
1123 htab->tls_ldm_got.refcount += 1;
1126 case R_390_TLS_IE32:
1127 case R_390_TLS_GOTIE12:
1128 case R_390_TLS_GOTIE20:
1129 case R_390_TLS_GOTIE32:
1130 case R_390_TLS_IEENT:
1131 if (bfd_link_pic (info))
1132 info->flags |= DF_STATIC_TLS;
1140 case R_390_TLS_GD32:
1141 /* This symbol requires a global offset table entry. */
1150 tls_type = GOT_NORMAL;
1152 case R_390_TLS_GD32:
1153 tls_type = GOT_TLS_GD;
1155 case R_390_TLS_IE32:
1156 case R_390_TLS_GOTIE32:
1157 tls_type = GOT_TLS_IE;
1159 case R_390_TLS_GOTIE12:
1160 case R_390_TLS_GOTIE20:
1161 case R_390_TLS_IEENT:
1162 tls_type = GOT_TLS_IE_NLT;
1168 h->got.refcount += 1;
1169 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1173 local_got_refcounts[r_symndx] += 1;
1174 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1176 /* If a TLS symbol is accessed using IE at least once,
1177 there is no point to use dynamic model for it. */
1178 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1180 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1183 /* xgettext:c-format */
1184 (_("%pB: `%s' accessed both as normal and thread local symbol"),
1185 abfd, h->root.root.string);
1188 if (old_tls_type > tls_type)
1189 tls_type = old_tls_type;
1192 if (old_tls_type != tls_type)
1195 elf_s390_hash_entry (h)->tls_type = tls_type;
1197 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1200 if (r_type != R_390_TLS_IE32)
1204 case R_390_TLS_LE32:
1205 /* For static linking and executables this reloc will be
1206 calculated at linktime otherwise a TLS_TPOFF runtime
1207 reloc will be generated. */
1208 if (r_type == R_390_TLS_LE32 && bfd_link_pie (info))
1211 if (!bfd_link_pic (info))
1213 info->flags |= DF_STATIC_TLS;
1225 if (h != NULL && bfd_link_executable (info))
1227 /* If this reloc is in a read-only section, we might
1228 need a copy reloc. We can't check reliably at this
1229 stage whether the section is read-only, as input
1230 sections have not yet been mapped to output sections.
1231 Tentatively set the flag for now, and correct in
1232 adjust_dynamic_symbol. */
1235 if (!bfd_link_pic (info))
1237 /* We may need a .plt entry if the function this reloc
1238 refers to is in a shared lib. */
1239 h->plt.refcount += 1;
1243 /* If we are creating a shared library, and this is a reloc
1244 against a global symbol, or a non PC relative reloc
1245 against a local symbol, then we need to copy the reloc
1246 into the shared library. However, if we are linking with
1247 -Bsymbolic, we do not need to copy a reloc against a
1248 global symbol which is defined in an object we are
1249 including in the link (i.e., DEF_REGULAR is set). At
1250 this point we have not seen all the input files, so it is
1251 possible that DEF_REGULAR is not set now but will be set
1252 later (it is never cleared). In case of a weak definition,
1253 DEF_REGULAR may be cleared later by a strong definition in
1254 a shared library. We account for that possibility below by
1255 storing information in the relocs_copied field of the hash
1256 table entry. A similar situation occurs when creating
1257 shared libraries and symbol visibility changes render the
1260 If on the other hand, we are creating an executable, we
1261 may need to keep relocations for symbols satisfied by a
1262 dynamic library if we manage to avoid copy relocs for the
1264 if ((bfd_link_pic (info)
1265 && (sec->flags & SEC_ALLOC) != 0
1266 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16
1267 && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL
1268 && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL
1269 && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL
1270 && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL
1271 && ELF32_R_TYPE (rel->r_info) != R_390_PC32)
1273 && (! SYMBOLIC_BIND (info, h)
1274 || h->root.type == bfd_link_hash_defweak
1275 || !h->def_regular))))
1276 || (ELIMINATE_COPY_RELOCS
1277 && !bfd_link_pic (info)
1278 && (sec->flags & SEC_ALLOC) != 0
1280 && (h->root.type == bfd_link_hash_defweak
1281 || !h->def_regular)))
1283 struct elf_dyn_relocs *p;
1284 struct elf_dyn_relocs **head;
1286 /* We must copy these reloc types into the output file.
1287 Create a reloc section in dynobj and make room for
1291 if (htab->elf.dynobj == NULL)
1292 htab->elf.dynobj = abfd;
1294 sreloc = _bfd_elf_make_dynamic_reloc_section
1295 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1301 /* If this is a global symbol, we count the number of
1302 relocations we need for this symbol. */
1305 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1309 /* Track dynamic relocs needed for local syms too.
1310 We really need local syms available to do this
1315 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1320 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1324 vpp = &elf_section_data (s)->local_dynrel;
1325 head = (struct elf_dyn_relocs **) vpp;
1329 if (p == NULL || p->sec != sec)
1331 bfd_size_type amt = sizeof *p;
1333 p = ((struct elf_dyn_relocs *)
1334 bfd_alloc (htab->elf.dynobj, amt));
1345 if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
1346 || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL
1347 || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
1348 || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL
1349 || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
1350 || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
1355 /* This relocation describes the C++ object vtable hierarchy.
1356 Reconstruct it for later use during GC. */
1357 case R_390_GNU_VTINHERIT:
1358 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1362 /* This relocation describes which C++ vtable entries are actually
1363 used. Record for later use during GC. */
1364 case R_390_GNU_VTENTRY:
1365 BFD_ASSERT (h != NULL);
1367 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1379 /* Return the section that should be marked against GC for a given
1383 elf_s390_gc_mark_hook (asection *sec,
1384 struct bfd_link_info *info,
1385 Elf_Internal_Rela *rel,
1386 struct elf_link_hash_entry *h,
1387 Elf_Internal_Sym *sym)
1390 switch (ELF32_R_TYPE (rel->r_info))
1392 case R_390_GNU_VTINHERIT:
1393 case R_390_GNU_VTENTRY:
1396 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1400 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1401 entry but we found we will not create any. Called when we find we will
1402 not have any PLT for this symbol, by for example
1403 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1404 or elf_s390_size_dynamic_sections if no dynamic sections will be
1405 created (we're only linking static objects). */
1408 elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
1410 if (h->elf.root.type == bfd_link_hash_warning)
1411 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1413 if (h->gotplt_refcount <= 0)
1416 /* We simply add the number of gotplt references to the number
1417 * of got references for this symbol. */
1418 h->elf.got.refcount += h->gotplt_refcount;
1419 h->gotplt_refcount = -1;
1422 /* Find dynamic relocs for H that apply to read-only sections. */
1425 readonly_dynrelocs (struct elf_link_hash_entry *h)
1427 struct elf_dyn_relocs *p;
1429 for (p = elf_s390_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
1431 asection *s = p->sec->output_section;
1433 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1439 /* Adjust a symbol defined by a dynamic object and referenced by a
1440 regular object. The current definition is in some section of the
1441 dynamic object, but we're not including those sections. We have to
1442 change the definition to something the rest of the link can
1446 elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1447 struct elf_link_hash_entry *h)
1449 struct elf_s390_link_hash_table *htab;
1452 /* STT_GNU_IFUNC symbol must go through PLT. */
1453 if (s390_is_ifunc_symbol_p (h))
1455 /* All local STT_GNU_IFUNC references must be treated as local
1456 calls via local PLT. */
1457 if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1459 bfd_size_type pc_count = 0, count = 0;
1460 struct elf_dyn_relocs **pp;
1461 struct elf_s390_link_hash_entry *eh;
1462 struct elf_dyn_relocs *p;
1464 eh = (struct elf_s390_link_hash_entry *) h;
1465 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1467 pc_count += p->pc_count;
1468 p->count -= p->pc_count;
1477 if (pc_count || count)
1481 if (h->plt.refcount <= 0)
1482 h->plt.refcount = 1;
1484 h->plt.refcount += 1;
1488 if (h->plt.refcount <= 0)
1490 h->plt.offset = (bfd_vma) -1;
1496 /* If this is a function, put it in the procedure linkage table. We
1497 will fill in the contents of the procedure linkage table later
1498 (although we could actually do it here). */
1499 if (h->type == STT_FUNC
1502 if (h->plt.refcount <= 0
1503 || SYMBOL_CALLS_LOCAL (info, h)
1504 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1505 && h->root.type != bfd_link_hash_undefweak))
1507 /* This case can occur if we saw a PLT32 reloc in an input
1508 file, but the symbol was never referred to by a dynamic
1509 object, or if all references were garbage collected. In
1510 such a case, we don't actually need to build a procedure
1511 linkage table, and we can just do a PC32 reloc instead. */
1512 h->plt.offset = (bfd_vma) -1;
1514 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1520 /* It's possible that we incorrectly decided a .plt reloc was
1521 needed for an R_390_PC32 reloc to a non-function sym in
1522 check_relocs. We can't decide accurately between function and
1523 non-function syms in check-relocs; Objects loaded later in
1524 the link may change h->type. So fix it now. */
1525 h->plt.offset = (bfd_vma) -1;
1527 /* If this is a weak symbol, and there is a real definition, the
1528 processor independent code will have arranged for us to see the
1529 real definition first, and we can just use the same value. */
1530 if (h->is_weakalias)
1532 struct elf_link_hash_entry *def = weakdef (h);
1533 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1534 h->root.u.def.section = def->root.u.def.section;
1535 h->root.u.def.value = def->root.u.def.value;
1536 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1537 h->non_got_ref = def->non_got_ref;
1541 /* This is a reference to a symbol defined by a dynamic object which
1542 is not a function. */
1544 /* If we are creating a shared library, we must presume that the
1545 only references to the symbol are via the global offset table.
1546 For such cases we need not do anything here; the relocations will
1547 be handled correctly by relocate_section. */
1548 if (bfd_link_pic (info))
1551 /* If there are no references to this symbol that do not use the
1552 GOT, we don't need to generate a copy reloc. */
1553 if (!h->non_got_ref)
1556 /* If -z nocopyreloc was given, we won't generate them either. */
1557 if (info->nocopyreloc)
1563 /* If we don't find any dynamic relocs in read-only sections, then
1564 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1565 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
1571 /* We must allocate the symbol in our .dynbss section, which will
1572 become part of the .bss section of the executable. There will be
1573 an entry for this symbol in the .dynsym section. The dynamic
1574 object will contain position independent code, so all references
1575 from the dynamic object to this symbol will go through the global
1576 offset table. The dynamic linker will use the .dynsym entry to
1577 determine the address it must put in the global offset table, so
1578 both the dynamic object and the regular object will refer to the
1579 same memory location for the variable. */
1581 htab = elf_s390_hash_table (info);
1583 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1584 copy the initial value out of the dynamic object and into the
1585 runtime process image. */
1586 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1588 s = htab->elf.sdynrelro;
1589 srel = htab->elf.sreldynrelro;
1593 s = htab->elf.sdynbss;
1594 srel = htab->elf.srelbss;
1596 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
1598 srel->size += sizeof (Elf32_External_Rela);
1602 return _bfd_elf_adjust_dynamic_copy (info, h, s);
1605 /* Allocate space in .plt, .got and associated reloc sections for
1609 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1611 struct bfd_link_info *info;
1612 struct elf_s390_link_hash_table *htab;
1613 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
1614 struct elf_dyn_relocs *p;
1616 if (h->root.type == bfd_link_hash_indirect)
1619 info = (struct bfd_link_info *) inf;
1620 htab = elf_s390_hash_table (info);
1622 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1623 here if it is defined and referenced in a non-shared object. */
1624 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1625 return s390_elf_allocate_ifunc_dyn_relocs (info, h);
1626 else if (htab->elf.dynamic_sections_created
1627 && h->plt.refcount > 0)
1629 /* Make sure this symbol is output as a dynamic symbol.
1630 Undefined weak syms won't yet be marked as dynamic. */
1631 if (h->dynindx == -1
1632 && !h->forced_local)
1634 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1638 if (bfd_link_pic (info)
1639 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1641 asection *s = htab->elf.splt;
1643 /* If this is the first .plt entry, make room for the special
1646 s->size += PLT_FIRST_ENTRY_SIZE;
1648 h->plt.offset = s->size;
1650 /* If this symbol is not defined in a regular file, and we are
1651 not generating a shared library, then set the symbol to this
1652 location in the .plt. This is required to make function
1653 pointers compare as equal between the normal executable and
1654 the shared library. */
1655 if (! bfd_link_pic (info)
1658 h->root.u.def.section = s;
1659 h->root.u.def.value = h->plt.offset;
1662 /* Make room for this entry. */
1663 s->size += PLT_ENTRY_SIZE;
1665 /* We also need to make an entry in the .got.plt section, which
1666 will be placed in the .got section by the linker script. */
1667 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
1669 /* We also need to make an entry in the .rela.plt section. */
1670 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
1674 h->plt.offset = (bfd_vma) -1;
1676 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1681 h->plt.offset = (bfd_vma) -1;
1683 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1686 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1687 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1688 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1689 we can save the dynamic TLS relocation. */
1690 if (h->got.refcount > 0
1691 && !bfd_link_pic (info)
1693 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1695 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1696 /* For the GOTIE access without a literal pool entry the offset has
1697 to be stored somewhere. The immediate value in the instruction
1698 is not bit enough so the value is stored in the got. */
1700 h->got.offset = htab->elf.sgot->size;
1701 htab->elf.sgot->size += GOT_ENTRY_SIZE;
1704 h->got.offset = (bfd_vma) -1;
1706 else if (h->got.refcount > 0)
1710 int tls_type = elf_s390_hash_entry(h)->tls_type;
1712 /* Make sure this symbol is output as a dynamic symbol.
1713 Undefined weak syms won't yet be marked as dynamic. */
1714 if (h->dynindx == -1
1715 && !h->forced_local)
1717 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1722 h->got.offset = s->size;
1723 s->size += GOT_ENTRY_SIZE;
1724 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1725 if (tls_type == GOT_TLS_GD)
1726 s->size += GOT_ENTRY_SIZE;
1727 dyn = htab->elf.dynamic_sections_created;
1728 /* R_390_TLS_IE32 needs one dynamic relocation,
1729 R_390_TLS_GD32 needs one if local symbol and two if global. */
1730 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1731 || tls_type >= GOT_TLS_IE)
1732 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
1733 else if (tls_type == GOT_TLS_GD)
1734 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela);
1735 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1736 || h->root.type != bfd_link_hash_undefweak)
1737 && (bfd_link_pic (info)
1738 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1739 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
1742 h->got.offset = (bfd_vma) -1;
1744 if (eh->dyn_relocs == NULL)
1747 /* In the shared -Bsymbolic case, discard space allocated for
1748 dynamic pc-relative relocs against symbols which turn out to be
1749 defined in regular objects. For the normal shared case, discard
1750 space for pc-relative relocs that have become local due to symbol
1751 visibility changes. */
1753 if (bfd_link_pic (info))
1755 if (SYMBOL_CALLS_LOCAL (info, h))
1757 struct elf_dyn_relocs **pp;
1759 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1761 p->count -= p->pc_count;
1770 /* Also discard relocs on undefined weak syms with non-default
1772 if (eh->dyn_relocs != NULL
1773 && h->root.type == bfd_link_hash_undefweak)
1775 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1776 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
1777 eh->dyn_relocs = NULL;
1779 /* Make sure undefined weak symbols are output as a dynamic
1781 else if (h->dynindx == -1
1782 && !h->forced_local)
1784 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1789 else if (ELIMINATE_COPY_RELOCS)
1791 /* For the non-shared case, discard space for relocs against
1792 symbols which turn out to need copy relocs or are not
1798 || (htab->elf.dynamic_sections_created
1799 && (h->root.type == bfd_link_hash_undefweak
1800 || h->root.type == bfd_link_hash_undefined))))
1802 /* Make sure this symbol is output as a dynamic symbol.
1803 Undefined weak syms won't yet be marked as dynamic. */
1804 if (h->dynindx == -1
1805 && !h->forced_local)
1807 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1811 /* If that succeeded, we know we'll be keeping all the
1813 if (h->dynindx != -1)
1817 eh->dyn_relocs = NULL;
1822 /* Finally, allocate space. */
1823 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1825 asection *sreloc = elf_section_data (p->sec)->sreloc;
1827 sreloc->size += p->count * sizeof (Elf32_External_Rela);
1833 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
1834 read-only sections. */
1837 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
1841 if (h->root.type == bfd_link_hash_indirect)
1844 sec = readonly_dynrelocs (h);
1847 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
1849 info->flags |= DF_TEXTREL;
1850 info->callbacks->minfo
1851 (_("%pB: dynamic relocation against `%T' in read-only section `%pA'\n"),
1852 sec->owner, h->root.root.string, sec);
1854 /* Not an error, just cut short the traversal. */
1860 /* Set the sizes of the dynamic sections. */
1863 elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1864 struct bfd_link_info *info)
1866 struct elf_s390_link_hash_table *htab;
1872 htab = elf_s390_hash_table (info);
1873 dynobj = htab->elf.dynobj;
1877 if (htab->elf.dynamic_sections_created)
1879 /* Set the contents of the .interp section to the interpreter. */
1880 if (bfd_link_executable (info) && !info->nointerp)
1882 s = bfd_get_linker_section (dynobj, ".interp");
1885 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1886 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1890 /* Set up .got offsets for local syms, and space for local dynamic
1892 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
1894 bfd_signed_vma *local_got;
1895 bfd_signed_vma *end_local_got;
1896 char *local_tls_type;
1897 bfd_size_type locsymcount;
1898 Elf_Internal_Shdr *symtab_hdr;
1900 struct plt_entry *local_plt;
1903 if (! is_s390_elf (ibfd))
1906 for (s = ibfd->sections; s != NULL; s = s->next)
1908 struct elf_dyn_relocs *p;
1910 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
1912 if (!bfd_is_abs_section (p->sec)
1913 && bfd_is_abs_section (p->sec->output_section))
1915 /* Input section has been discarded, either because
1916 it is a copy of a linkonce section or due to
1917 linker script /DISCARD/, so we'll be discarding
1920 else if (p->count != 0)
1922 srela = elf_section_data (p->sec)->sreloc;
1923 srela->size += p->count * sizeof (Elf32_External_Rela);
1924 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1925 info->flags |= DF_TEXTREL;
1930 local_got = elf_local_got_refcounts (ibfd);
1934 symtab_hdr = &elf_symtab_hdr (ibfd);
1935 locsymcount = symtab_hdr->sh_info;
1936 end_local_got = local_got + locsymcount;
1937 local_tls_type = elf_s390_local_got_tls_type (ibfd);
1939 srela = htab->elf.srelgot;
1940 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
1944 *local_got = s->size;
1945 s->size += GOT_ENTRY_SIZE;
1946 if (*local_tls_type == GOT_TLS_GD)
1947 s->size += GOT_ENTRY_SIZE;
1948 if (bfd_link_pic (info))
1949 srela->size += sizeof (Elf32_External_Rela);
1952 *local_got = (bfd_vma) -1;
1954 local_plt = elf_s390_local_plt (ibfd);
1955 for (i = 0; i < symtab_hdr->sh_info; i++)
1957 if (local_plt[i].plt.refcount > 0)
1959 local_plt[i].plt.offset = htab->elf.iplt->size;
1960 htab->elf.iplt->size += PLT_ENTRY_SIZE;
1961 htab->elf.igotplt->size += GOT_ENTRY_SIZE;
1962 htab->elf.irelplt->size += RELA_ENTRY_SIZE;
1965 local_plt[i].plt.offset = (bfd_vma) -1;
1969 if (htab->tls_ldm_got.refcount > 0)
1971 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
1973 htab->tls_ldm_got.offset = htab->elf.sgot->size;
1974 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
1975 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
1978 htab->tls_ldm_got.offset = -1;
1980 /* Allocate global sym .plt and .got entries, and space for global
1981 sym dynamic relocs. */
1982 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
1984 /* We now have determined the sizes of the various dynamic sections.
1985 Allocate memory for them. */
1987 for (s = dynobj->sections; s != NULL; s = s->next)
1989 if ((s->flags & SEC_LINKER_CREATED) == 0)
1992 if (s == htab->elf.splt
1993 || s == htab->elf.sgot
1994 || s == htab->elf.sgotplt
1995 || s == htab->elf.sdynbss
1996 || s == htab->elf.sdynrelro
1997 || s == htab->elf.iplt
1998 || s == htab->elf.igotplt
1999 || s == htab->irelifunc)
2001 /* Strip this section if we don't need it; see the
2004 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2009 /* We use the reloc_count field as a counter if we need
2010 to copy relocs into the output file. */
2015 /* It's not one of our sections, so don't allocate space. */
2021 /* If we don't need this section, strip it from the
2022 output file. This is to handle .rela.bss and
2023 .rela.plt. We must create it in
2024 create_dynamic_sections, because it must be created
2025 before the linker maps input sections to output
2026 sections. The linker does that before
2027 adjust_dynamic_symbol is called, and it is that
2028 function which decides whether anything needs to go
2029 into these sections. */
2031 s->flags |= SEC_EXCLUDE;
2035 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2038 /* Allocate memory for the section contents. We use bfd_zalloc
2039 here in case unused entries are not reclaimed before the
2040 section's contents are written out. This should not happen,
2041 but this way if it does, we get a R_390_NONE reloc instead
2043 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2044 if (s->contents == NULL)
2048 if (htab->elf.dynamic_sections_created)
2050 /* Add some entries to the .dynamic section. We fill in the
2051 values later, in elf_s390_finish_dynamic_sections, but we
2052 must add the entries now so that we get the correct size for
2053 the .dynamic section. The DT_DEBUG entry is filled in by the
2054 dynamic linker and used by the debugger. */
2055 #define add_dynamic_entry(TAG, VAL) \
2056 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2058 if (bfd_link_executable (info))
2060 if (!add_dynamic_entry (DT_DEBUG, 0))
2064 if (htab->elf.splt->size != 0)
2066 if (!add_dynamic_entry (DT_PLTGOT, 0)
2067 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2068 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2069 || !add_dynamic_entry (DT_JMPREL, 0))
2075 if (!add_dynamic_entry (DT_RELA, 0)
2076 || !add_dynamic_entry (DT_RELASZ, 0)
2077 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2080 /* If any dynamic relocs apply to a read-only section,
2081 then we need a DT_TEXTREL entry. */
2082 if ((info->flags & DF_TEXTREL) == 0)
2083 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
2085 if ((info->flags & DF_TEXTREL) != 0)
2087 if (!add_dynamic_entry (DT_TEXTREL, 0))
2092 #undef add_dynamic_entry
2097 /* Return the base VMA address which should be subtracted from real addresses
2098 when resolving @dtpoff relocation.
2099 This is PT_TLS segment p_vaddr. */
2102 dtpoff_base (struct bfd_link_info *info)
2104 /* If tls_sec is NULL, we should have signalled an error already. */
2105 if (elf_hash_table (info)->tls_sec == NULL)
2107 return elf_hash_table (info)->tls_sec->vma;
2110 /* Return the relocation value for @tpoff relocation
2111 if STT_TLS virtual address is ADDRESS. */
2114 tpoff (struct bfd_link_info *info, bfd_vma address)
2116 struct elf_link_hash_table *htab = elf_hash_table (info);
2118 /* If tls_sec is NULL, we should have signalled an error already. */
2119 if (htab->tls_sec == NULL)
2121 return htab->tls_size + htab->tls_sec->vma - address;
2124 /* Complain if TLS instruction relocation is against an invalid
2128 invalid_tls_insn (bfd *input_bfd,
2129 asection *input_section,
2130 Elf_Internal_Rela *rel)
2132 reloc_howto_type *howto;
2134 howto = elf_howto_table + ELF32_R_TYPE (rel->r_info);
2136 /* xgettext:c-format */
2137 (_("%pB(%pA+%#Lx): invalid instruction for TLS relocation %s"),
2142 bfd_set_error (bfd_error_bad_value);
2145 /* Relocate a 390 ELF section. */
2148 elf_s390_relocate_section (bfd *output_bfd,
2149 struct bfd_link_info *info,
2151 asection *input_section,
2153 Elf_Internal_Rela *relocs,
2154 Elf_Internal_Sym *local_syms,
2155 asection **local_sections)
2157 struct elf_s390_link_hash_table *htab;
2158 Elf_Internal_Shdr *symtab_hdr;
2159 struct elf_link_hash_entry **sym_hashes;
2160 bfd_vma *local_got_offsets;
2161 Elf_Internal_Rela *rel;
2162 Elf_Internal_Rela *relend;
2164 BFD_ASSERT (is_s390_elf (input_bfd));
2166 htab = elf_s390_hash_table (info);
2167 symtab_hdr = &elf_symtab_hdr (input_bfd);
2168 sym_hashes = elf_sym_hashes (input_bfd);
2169 local_got_offsets = elf_local_got_offsets (input_bfd);
2172 relend = relocs + input_section->reloc_count;
2173 for (; rel < relend; rel++)
2175 unsigned int r_type;
2176 reloc_howto_type *howto;
2177 unsigned long r_symndx;
2178 struct elf_link_hash_entry *h;
2179 Elf_Internal_Sym *sym;
2183 bfd_boolean unresolved_reloc;
2184 bfd_reloc_status_type r;
2186 asection *base_got = htab->elf.sgot;
2187 bfd_boolean resolved_to_zero;
2189 r_type = ELF32_R_TYPE (rel->r_info);
2190 if (r_type == (int) R_390_GNU_VTINHERIT
2191 || r_type == (int) R_390_GNU_VTENTRY)
2193 if (r_type >= (int) R_390_max)
2195 bfd_set_error (bfd_error_bad_value);
2199 howto = elf_howto_table + r_type;
2200 r_symndx = ELF32_R_SYM (rel->r_info);
2205 unresolved_reloc = FALSE;
2206 if (r_symndx < symtab_hdr->sh_info)
2208 sym = local_syms + r_symndx;
2209 sec = local_sections[r_symndx];
2210 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2212 struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2213 if (local_plt == NULL)
2216 /* Address of the PLT slot. */
2217 relocation = (htab->elf.iplt->output_section->vma
2218 + htab->elf.iplt->output_offset
2219 + local_plt[r_symndx].plt.offset);
2223 case R_390_PLTOFF16:
2224 case R_390_PLTOFF32:
2225 relocation -= htab->elf.sgot->output_section->vma;
2227 case R_390_GOTPLT12:
2228 case R_390_GOTPLT16:
2229 case R_390_GOTPLT20:
2230 case R_390_GOTPLT32:
2231 case R_390_GOTPLTENT:
2238 /* Write the PLT slot address into the GOT slot. */
2239 bfd_put_32 (output_bfd, relocation,
2240 htab->elf.sgot->contents +
2241 local_got_offsets[r_symndx]);
2242 relocation = (local_got_offsets[r_symndx] +
2243 htab->elf.sgot->output_offset);
2245 if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2246 relocation += htab->elf.sgot->output_section->vma;
2252 /* The output section is needed later in
2253 finish_dynamic_section when creating the dynamic
2255 local_plt[r_symndx].sec = sec;
2259 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2263 bfd_boolean warned ATTRIBUTE_UNUSED;
2264 bfd_boolean ignored ATTRIBUTE_UNUSED;
2266 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2267 r_symndx, symtab_hdr, sym_hashes,
2269 unresolved_reloc, warned, ignored);
2272 if (sec != NULL && discarded_section (sec))
2273 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2274 rel, 1, relend, howto, 0, contents);
2276 if (bfd_link_relocatable (info))
2279 resolved_to_zero = (h != NULL
2280 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
2284 case R_390_GOTPLT12:
2285 case R_390_GOTPLT16:
2286 case R_390_GOTPLT20:
2287 case R_390_GOTPLT32:
2288 case R_390_GOTPLTENT:
2289 /* There are three cases for a GOTPLT relocation. 1) The
2290 relocation is against the jump slot entry of a plt that
2291 will get emitted to the output file. 2) The relocation
2292 is against the jump slot of a plt entry that has been
2293 removed. elf_s390_adjust_gotplt has created a GOT entry
2294 as replacement. 3) The relocation is against a local symbol.
2295 Cases 2) and 3) are the same as the GOT relocation code
2296 so we just have to test for case 1 and fall through for
2298 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2302 if (s390_is_ifunc_symbol_p (h))
2304 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2305 relocation = (plt_index * GOT_ENTRY_SIZE +
2306 htab->elf.igotplt->output_offset);
2307 if (r_type == R_390_GOTPLTENT)
2308 relocation += htab->elf.igotplt->output_section->vma;
2313 Current offset - size first entry / entry size. */
2314 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2317 /* Offset in GOT is PLT index plus GOT headers(3)
2318 times 4, addr & GOT addr. */
2319 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2320 if (r_type == R_390_GOTPLTENT)
2321 relocation += htab->elf.sgot->output_section->vma;
2323 unresolved_reloc = FALSE;
2333 /* Relocation is to the entry for this symbol in the global
2335 if (base_got == NULL)
2342 off = h->got.offset;
2343 dyn = htab->elf.dynamic_sections_created;
2345 if (s390_is_ifunc_symbol_p (h))
2347 BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2348 if (off == (bfd_vma)-1)
2350 /* No explicit GOT usage so redirect to the
2352 base_got = htab->elf.igotplt;
2353 off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2357 /* Explicit GOT slots must contain the address
2358 of the PLT slot. This will be handled in
2359 finish_dynamic_symbol. */
2362 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2363 bfd_link_pic (info),
2365 || (bfd_link_pic (info)
2366 && SYMBOL_REFERENCES_LOCAL (info, h))
2367 || (ELF_ST_VISIBILITY (h->other)
2368 && h->root.type == bfd_link_hash_undefweak))
2371 /* This is actually a static link, or it is a
2372 -Bsymbolic link and the symbol is defined
2373 locally, or the symbol was forced to be local
2374 because of a version file. We must initialize
2375 this entry in the global offset table. Since the
2376 offset must always be a multiple of 2, we use the
2377 least significant bit to record whether we have
2378 initialized it already.
2380 When doing a dynamic link, we create a .rel.got
2381 relocation entry to initialize the value. This
2382 is done in the finish_dynamic_symbol routine. */
2387 bfd_put_32 (output_bfd, relocation,
2388 base_got->contents + off);
2393 && bfd_link_pic (info)
2394 && SYMBOL_REFERENCES_LOCAL (info, h))
2395 /* lrl rx,sym@GOTENT -> larl rx, sym */
2396 && ((r_type == R_390_GOTENT
2397 && (bfd_get_16 (input_bfd,
2398 contents + rel->r_offset - 2)
2399 & 0xff0f) == 0xc40d)
2400 /* ly rx, sym@GOT(r12) -> larl rx, sym */
2401 || (r_type == R_390_GOT20
2402 && (bfd_get_32 (input_bfd,
2403 contents + rel->r_offset - 2)
2404 & 0xff00f000) == 0xe300c000
2405 && bfd_get_8 (input_bfd,
2406 contents + rel->r_offset + 3) == 0x58)))
2408 unsigned short new_insn =
2409 (0xc000 | (bfd_get_8 (input_bfd,
2410 contents + rel->r_offset - 1) & 0xf0));
2411 bfd_put_16 (output_bfd, new_insn,
2412 contents + rel->r_offset - 2);
2413 r_type = R_390_PC32DBL;
2415 howto = elf_howto_table + r_type;
2416 relocation = h->root.u.def.value
2417 + h->root.u.def.section->output_section->vma
2418 + h->root.u.def.section->output_offset;
2423 unresolved_reloc = FALSE;
2427 if (local_got_offsets == NULL)
2430 off = local_got_offsets[r_symndx];
2432 /* The offset must always be a multiple of 4. We use
2433 the least significant bit to record whether we have
2434 already generated the necessary reloc. */
2439 bfd_put_32 (output_bfd, relocation,
2440 htab->elf.sgot->contents + off);
2442 if (bfd_link_pic (info))
2445 Elf_Internal_Rela outrel;
2448 srelgot = htab->elf.srelgot;
2449 if (srelgot == NULL)
2452 outrel.r_offset = (htab->elf.sgot->output_section->vma
2453 + htab->elf.sgot->output_offset
2455 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2456 outrel.r_addend = relocation;
2457 loc = srelgot->contents;
2458 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
2459 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2462 local_got_offsets[r_symndx] |= 1;
2466 if (off >= (bfd_vma) -2)
2469 relocation = base_got->output_offset + off;
2471 /* For @GOTENT the relocation is against the offset between
2472 the instruction and the symbols entry in the GOT and not
2473 between the start of the GOT and the symbols entry. We
2474 add the vma of the GOT to get the correct value. */
2475 if ( r_type == R_390_GOTENT
2476 || r_type == R_390_GOTPLTENT)
2477 relocation += base_got->output_section->vma;
2481 case R_390_GOTOFF16:
2482 case R_390_GOTOFF32:
2483 /* Relocation is relative to the start of the global offset
2487 && s390_is_ifunc_symbol_p (h)
2489 && !bfd_link_executable (info))
2491 relocation = (htab->elf.iplt->output_section->vma
2492 + htab->elf.iplt->output_offset
2494 - htab->elf.sgot->output_section->vma);
2498 /* Note that sgot->output_offset is not involved in this
2499 calculation. We always want the start of .got. If we
2500 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2501 permitted by the ABI, we might have to change this
2503 relocation -= htab->elf.sgot->output_section->vma;
2507 case R_390_GOTPCDBL:
2508 /* Use global offset table as symbol value. */
2509 relocation = htab->elf.sgot->output_section->vma;
2510 unresolved_reloc = FALSE;
2513 case R_390_PLT12DBL:
2514 case R_390_PLT16DBL:
2515 case R_390_PLT24DBL:
2516 case R_390_PLT32DBL:
2518 /* Relocation is to the entry for this symbol in the
2519 procedure linkage table. */
2521 /* Resolve a PLT32 reloc against a local symbol directly,
2522 without using the procedure linkage table. */
2526 if (h->plt.offset == (bfd_vma) -1
2527 || (htab->elf.splt == NULL && htab->elf.iplt == NULL))
2529 /* We didn't make a PLT entry for this symbol. This
2530 happens when statically linking PIC code, or when
2531 using -Bsymbolic. */
2535 if (s390_is_ifunc_symbol_p (h))
2536 relocation = (htab->elf.iplt->output_section->vma
2537 + htab->elf.iplt->output_offset
2540 relocation = (htab->elf.splt->output_section->vma
2541 + htab->elf.splt->output_offset
2543 unresolved_reloc = FALSE;
2546 case R_390_PLTOFF16:
2547 case R_390_PLTOFF32:
2548 /* Relocation is to the entry for this symbol in the
2549 procedure linkage table relative to the start of the GOT. */
2551 /* For local symbols or if we didn't make a PLT entry for
2552 this symbol resolve the symbol directly. */
2554 || h->plt.offset == (bfd_vma) -1
2555 || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
2557 relocation -= htab->elf.sgot->output_section->vma;
2561 if (s390_is_ifunc_symbol_p (h))
2562 relocation = (htab->elf.iplt->output_section->vma
2563 + htab->elf.iplt->output_offset
2565 - htab->elf.sgot->output_section->vma);
2567 relocation = (htab->elf.splt->output_section->vma
2568 + htab->elf.splt->output_offset
2570 - htab->elf.sgot->output_section->vma);
2571 unresolved_reloc = FALSE;
2581 && s390_is_ifunc_symbol_p (h)
2583 && !bfd_link_executable (info))
2585 /* This will not work our if the function does not
2586 happen to set up the GOT pointer for some other
2587 reason. 31 bit PLT entries require r12 to hold the
2589 FIXME: Implement an errorcheck.
2590 NOTE: It will work when brasl is not available
2591 (e.g. with -m31 -march=g5) since a local function
2592 call then does use GOTOFF which implies r12 being set
2594 relocation = (htab->elf.iplt->output_section->vma
2595 + htab->elf.iplt->output_offset
2605 && s390_is_ifunc_symbol_p (h)
2608 if (!bfd_link_pic (info))
2610 /* For a non-shared object STT_GNU_IFUNC symbol must
2612 relocation = (htab->elf.iplt->output_section->vma
2613 + htab->elf.iplt->output_offset
2619 /* For shared objects a runtime relocation is needed. */
2621 Elf_Internal_Rela outrel;
2624 /* Need a dynamic relocation to get the real function
2626 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2630 if (outrel.r_offset == (bfd_vma) -1
2631 || outrel.r_offset == (bfd_vma) -2)
2634 outrel.r_offset += (input_section->output_section->vma
2635 + input_section->output_offset);
2637 if (h->dynindx == -1
2639 || bfd_link_executable (info))
2641 /* This symbol is resolved locally. */
2642 outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
2643 outrel.r_addend = (h->root.u.def.value
2644 + h->root.u.def.section->output_section->vma
2645 + h->root.u.def.section->output_offset);
2649 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2650 outrel.r_addend = 0;
2653 sreloc = htab->elf.irelifunc;
2654 elf_append_rela (output_bfd, sreloc, &outrel);
2656 /* If this reloc is against an external symbol, we
2657 do not want to fiddle with the addend. Otherwise,
2658 we need to include the symbol value so that it
2659 becomes an addend for the dynamic reloc. For an
2660 internal symbol, we have updated addend. */
2665 if ((input_section->flags & SEC_ALLOC) == 0)
2668 if ((bfd_link_pic (info)
2670 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2671 && !resolved_to_zero)
2672 || h->root.type != bfd_link_hash_undefweak)
2673 && ((r_type != R_390_PC16
2674 && r_type != R_390_PC12DBL
2675 && r_type != R_390_PC16DBL
2676 && r_type != R_390_PC24DBL
2677 && r_type != R_390_PC32DBL
2678 && r_type != R_390_PC32)
2679 || !SYMBOL_CALLS_LOCAL (info, h)))
2680 || (ELIMINATE_COPY_RELOCS
2681 && !bfd_link_pic (info)
2687 || h->root.type == bfd_link_hash_undefweak
2688 || h->root.type == bfd_link_hash_undefined)))
2690 Elf_Internal_Rela outrel;
2691 bfd_boolean skip, relocate;
2695 /* When generating a shared object, these relocations
2696 are copied into the output file to be resolved at run
2703 _bfd_elf_section_offset (output_bfd, info, input_section,
2705 if (outrel.r_offset == (bfd_vma) -1)
2707 else if (outrel.r_offset == (bfd_vma) -2)
2708 skip = TRUE, relocate = TRUE;
2709 outrel.r_offset += (input_section->output_section->vma
2710 + input_section->output_offset);
2713 memset (&outrel, 0, sizeof outrel);
2716 && (r_type == R_390_PC16
2717 || r_type == R_390_PC12DBL
2718 || r_type == R_390_PC16DBL
2719 || r_type == R_390_PC24DBL
2720 || r_type == R_390_PC32DBL
2721 || r_type == R_390_PC32
2722 || !bfd_link_pic (info)
2723 || !SYMBOLIC_BIND (info, h)
2724 || !h->def_regular))
2726 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2727 outrel.r_addend = rel->r_addend;
2731 /* This symbol is local, or marked to become local. */
2732 outrel.r_addend = relocation + rel->r_addend;
2733 if (r_type == R_390_32)
2736 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2742 if (bfd_is_abs_section (sec))
2744 else if (sec == NULL || sec->owner == NULL)
2746 bfd_set_error(bfd_error_bad_value);
2753 osec = sec->output_section;
2754 sindx = elf_section_data (osec)->dynindx;
2757 osec = htab->elf.text_index_section;
2758 sindx = elf_section_data (osec)->dynindx;
2760 BFD_ASSERT (sindx != 0);
2762 /* We are turning this relocation into one
2763 against a section symbol, so subtract out
2764 the output section's address but not the
2765 offset of the input section in the output
2767 outrel.r_addend -= osec->vma;
2769 outrel.r_info = ELF32_R_INFO (sindx, r_type);
2773 sreloc = elf_section_data (input_section)->sreloc;
2777 loc = sreloc->contents;
2778 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2779 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2781 /* If this reloc is against an external symbol, we do
2782 not want to fiddle with the addend. Otherwise, we
2783 need to include the symbol value so that it becomes
2784 an addend for the dynamic reloc. */
2790 /* Relocations for tls literal pool entries. */
2791 case R_390_TLS_IE32:
2792 if (bfd_link_pic (info))
2794 Elf_Internal_Rela outrel;
2798 outrel.r_offset = rel->r_offset
2799 + input_section->output_section->vma
2800 + input_section->output_offset;
2801 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
2802 sreloc = elf_section_data (input_section)->sreloc;
2805 loc = sreloc->contents;
2806 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
2807 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2811 case R_390_TLS_GD32:
2812 case R_390_TLS_GOTIE32:
2813 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2814 tls_type = GOT_UNKNOWN;
2815 if (h == NULL && local_got_offsets)
2816 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2819 tls_type = elf_s390_hash_entry(h)->tls_type;
2820 if (!bfd_link_pic (info)
2822 && tls_type >= GOT_TLS_IE)
2823 r_type = R_390_TLS_LE32;
2825 if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE)
2826 r_type = R_390_TLS_IE32;
2828 if (r_type == R_390_TLS_LE32)
2830 /* This relocation gets optimized away by the local exec
2831 access optimization. */
2832 BFD_ASSERT (! unresolved_reloc);
2833 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2834 contents + rel->r_offset);
2838 if (htab->elf.sgot == NULL)
2842 off = h->got.offset;
2845 if (local_got_offsets == NULL)
2848 off = local_got_offsets[r_symndx];
2857 Elf_Internal_Rela outrel;
2861 if (htab->elf.srelgot == NULL)
2864 outrel.r_offset = (htab->elf.sgot->output_section->vma
2865 + htab->elf.sgot->output_offset + off);
2867 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2868 if (r_type == R_390_TLS_GD32)
2869 dr_type = R_390_TLS_DTPMOD;
2871 dr_type = R_390_TLS_TPOFF;
2872 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2873 outrel.r_addend = relocation - dtpoff_base (info);
2875 outrel.r_addend = 0;
2876 outrel.r_info = ELF32_R_INFO (indx, dr_type);
2877 loc = htab->elf.srelgot->contents;
2878 loc += htab->elf.srelgot->reloc_count++
2879 * sizeof (Elf32_External_Rela);
2880 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2882 if (r_type == R_390_TLS_GD32)
2886 BFD_ASSERT (! unresolved_reloc);
2887 bfd_put_32 (output_bfd,
2888 relocation - dtpoff_base (info),
2889 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
2893 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF);
2894 outrel.r_offset += GOT_ENTRY_SIZE;
2895 outrel.r_addend = 0;
2896 htab->elf.srelgot->reloc_count++;
2897 loc += sizeof (Elf32_External_Rela);
2898 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2905 local_got_offsets[r_symndx] |= 1;
2908 if (off >= (bfd_vma) -2)
2910 if (r_type == ELF32_R_TYPE (rel->r_info))
2912 relocation = htab->elf.sgot->output_offset + off;
2913 if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT)
2914 relocation += htab->elf.sgot->output_section->vma;
2915 unresolved_reloc = FALSE;
2919 bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off,
2920 contents + rel->r_offset);
2925 case R_390_TLS_GOTIE12:
2926 case R_390_TLS_GOTIE20:
2927 case R_390_TLS_IEENT:
2930 if (local_got_offsets == NULL)
2932 off = local_got_offsets[r_symndx];
2933 if (bfd_link_pic (info))
2934 goto emit_tls_relocs;
2938 off = h->got.offset;
2939 tls_type = elf_s390_hash_entry(h)->tls_type;
2940 if (bfd_link_pic (info)
2942 || tls_type < GOT_TLS_IE)
2943 goto emit_tls_relocs;
2946 if (htab->elf.sgot == NULL)
2949 BFD_ASSERT (! unresolved_reloc);
2950 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2951 htab->elf.sgot->contents + off);
2952 relocation = htab->elf.sgot->output_offset + off;
2953 if (r_type == R_390_TLS_IEENT)
2954 relocation += htab->elf.sgot->output_section->vma;
2955 unresolved_reloc = FALSE;
2958 case R_390_TLS_LDM32:
2959 if (! bfd_link_pic (info))
2960 /* The literal pool entry this relocation refers to gets ignored
2961 by the optimized code of the local exec model. Do nothing
2962 and the value will turn out zero. */
2965 if (htab->elf.sgot == NULL)
2968 off = htab->tls_ldm_got.offset;
2973 Elf_Internal_Rela outrel;
2976 if (htab->elf.srelgot == NULL)
2979 outrel.r_offset = (htab->elf.sgot->output_section->vma
2980 + htab->elf.sgot->output_offset + off);
2982 bfd_put_32 (output_bfd, 0,
2983 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
2984 outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD);
2985 outrel.r_addend = 0;
2986 loc = htab->elf.srelgot->contents;
2987 loc += htab->elf.srelgot->reloc_count++
2988 * sizeof (Elf32_External_Rela);
2989 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
2990 htab->tls_ldm_got.offset |= 1;
2992 relocation = htab->elf.sgot->output_offset + off;
2993 unresolved_reloc = FALSE;
2996 case R_390_TLS_LE32:
2997 if (bfd_link_dll (info))
2999 /* Linking a shared library with non-fpic code requires
3000 a R_390_TLS_TPOFF relocation. */
3001 Elf_Internal_Rela outrel;
3006 outrel.r_offset = rel->r_offset
3007 + input_section->output_section->vma
3008 + input_section->output_offset;
3009 if (h != NULL && h->dynindx != -1)
3013 outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF);
3015 outrel.r_addend = relocation - dtpoff_base (info);
3017 outrel.r_addend = 0;
3018 sreloc = elf_section_data (input_section)->sreloc;
3021 loc = sreloc->contents;
3022 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3023 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3027 BFD_ASSERT (! unresolved_reloc);
3028 bfd_put_32 (output_bfd, -tpoff (info, relocation),
3029 contents + rel->r_offset);
3033 case R_390_TLS_LDO32:
3034 if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
3035 relocation -= dtpoff_base (info);
3037 /* When converting LDO to LE, we must negate. */
3038 relocation = -tpoff (info, relocation);
3041 /* Relocations for tls instructions. */
3042 case R_390_TLS_LOAD:
3043 case R_390_TLS_GDCALL:
3044 case R_390_TLS_LDCALL:
3045 tls_type = GOT_UNKNOWN;
3046 if (h == NULL && local_got_offsets)
3047 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3049 tls_type = elf_s390_hash_entry(h)->tls_type;
3051 if (tls_type == GOT_TLS_GD)
3054 if (r_type == R_390_TLS_LOAD)
3056 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3058 /* IE->LE transition. Four valid cases:
3059 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
3060 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
3061 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
3062 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3063 unsigned int insn, ry;
3065 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3066 if ((insn & 0xff00f000) == 0x58000000)
3067 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
3068 ry = (insn & 0x000f0000);
3069 else if ((insn & 0xff0f0000) == 0x58000000)
3070 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
3071 ry = (insn & 0x0000f000) << 4;
3072 else if ((insn & 0xff00f000) == 0x5800c000)
3073 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
3074 ry = (insn & 0x000f0000);
3075 else if ((insn & 0xff0f0000) == 0x580c0000)
3076 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3077 ry = (insn & 0x0000f000) << 4;
3080 invalid_tls_insn (input_bfd, input_section, rel);
3083 insn = 0x18000700 | (insn & 0x00f00000) | ry;
3084 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3087 else if (r_type == R_390_TLS_GDCALL)
3091 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3092 if ((insn & 0xff000fff) != 0x4d000000 &&
3093 (insn & 0xffff0000) != 0xc0e50000 &&
3094 (insn & 0xff000000) != 0x0d000000)
3096 invalid_tls_insn (input_bfd, input_section, rel);
3099 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3101 if ((insn & 0xff000000) == 0x0d000000)
3103 /* GD->LE transition.
3104 basr rx, ry -> nopr r7 */
3105 insn = 0x07070000 | (insn & 0xffff);
3107 else if ((insn & 0xff000000) == 0x4d000000)
3109 /* GD->LE transition.
3110 bas %r14,0(%rx,%r13) -> bc 0,0 */
3115 /* GD->LE transition.
3116 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
3118 bfd_put_16 (output_bfd, 0x0000,
3119 contents + rel->r_offset + 4);
3124 /* If basr is used in the pic case to invoke
3125 _tls_get_offset, something went wrong before. */
3126 if ((insn & 0xff000000) == 0x0d000000)
3128 invalid_tls_insn (input_bfd, input_section, rel);
3132 if ((insn & 0xff000000) == 0x4d000000)
3134 /* GD->IE transition.
3135 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3140 /* GD->IE transition.
3141 brasl %r14,__tls_get_addr@plt ->
3142 l %r2,0(%r2,%r12) ; bcr 0,0 */
3144 bfd_put_16 (output_bfd, 0x0700,
3145 contents + rel->r_offset + 4);
3148 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3150 else if (r_type == R_390_TLS_LDCALL)
3152 if (!bfd_link_pic (info))
3156 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3157 if ((insn & 0xff000fff) != 0x4d000000 &&
3158 (insn & 0xffff0000) != 0xc0e50000 &&
3159 (insn & 0xff000000) != 0x0d000000)
3161 invalid_tls_insn (input_bfd, input_section, rel);
3165 if ((insn & 0xff000000) == 0x0d000000)
3167 /* LD->LE transition.
3168 basr rx, ry -> nopr r7 */
3169 insn = 0x07070000 | (insn & 0xffff);
3171 else if ((insn & 0xff000000) == 0x4d000000)
3173 /* LD->LE transition.
3174 bas %r14,0(%rx,%r13) -> bc 0,0 */
3179 /* LD->LE transition.
3180 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
3182 bfd_put_16 (output_bfd, 0x0000,
3183 contents + rel->r_offset + 4);
3185 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3194 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3195 because such sections are not SEC_ALLOC and thus ld.so will
3196 not process them. */
3197 if (unresolved_reloc
3198 && !((input_section->flags & SEC_DEBUGGING) != 0
3200 && _bfd_elf_section_offset (output_bfd, info, input_section,
3201 rel->r_offset) != (bfd_vma) -1)
3203 /* xgettext:c-format */
3204 (_("%pB(%pA+%#Lx): unresolvable %s relocation against symbol `%s'"),
3209 h->root.root.string);
3213 /* When applying a 24 bit reloc we need to start one byte
3214 earlier. Otherwise the 32 bit get/put bfd operations might
3215 access a byte after the actual section. */
3216 if (r_type == R_390_PC24DBL
3217 || r_type == R_390_PLT24DBL)
3220 if (r_type == R_390_20
3221 || r_type == R_390_GOT20
3222 || r_type == R_390_GOTPLT20
3223 || r_type == R_390_TLS_GOTIE20)
3225 relocation += rel->r_addend;
3226 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3227 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3228 contents, rel->r_offset,
3232 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3233 contents, rel->r_offset,
3234 relocation, rel->r_addend);
3236 if (r != bfd_reloc_ok)
3241 name = h->root.root.string;
3244 name = bfd_elf_string_from_elf_section (input_bfd,
3245 symtab_hdr->sh_link,
3250 name = bfd_section_name (input_bfd, sec);
3253 if (r == bfd_reloc_overflow)
3254 (*info->callbacks->reloc_overflow)
3255 (info, (h ? &h->root : NULL), name, howto->name,
3256 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3260 /* xgettext:c-format */
3261 (_("%pB(%pA+%#Lx): reloc against `%s': error %d"),
3262 input_bfd, input_section,
3263 rel->r_offset, name, (int) r);
3272 /* Generate the PLT slots together with the dynamic relocations needed
3273 for IFUNC symbols. */
3276 elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3277 struct bfd_link_info *info,
3278 struct elf_link_hash_entry *h,
3279 struct elf_s390_link_hash_table *htab,
3280 bfd_vma iplt_offset,
3281 bfd_vma resolver_address)
3285 bfd_vma igotiplt_offset;
3286 Elf_Internal_Rela rela;
3288 asection *plt, *gotplt, *relplt;
3289 bfd_vma relative_offset;
3291 if (htab->elf.iplt == NULL
3292 || htab->elf.igotplt == NULL
3293 || htab->elf.irelplt == NULL)
3296 gotplt = htab->elf.igotplt;
3297 relplt = htab->elf.irelplt;
3299 /* Index of the PLT slot within iplt section. */
3300 iplt_index = iplt_offset / PLT_ENTRY_SIZE;
3301 plt = htab->elf.iplt;
3302 /* Offset into the igot.plt section. */
3303 igotiplt_offset = iplt_index * GOT_ENTRY_SIZE;
3304 /* Offset into the got section. */
3305 got_offset = igotiplt_offset + gotplt->output_offset;
3307 /* S390 uses halfwords for relative branch calc! */
3308 relative_offset = - (plt->output_offset +
3309 (PLT_ENTRY_SIZE * iplt_index) + 18) / 2;
3310 /* If offset is > 32768, branch to a previous branch
3311 390 can only handle +-64 K jumps. */
3312 if ( -32768 > (int) relative_offset )
3314 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3316 /* Fill in the entry in the procedure linkage table. */
3317 if (!bfd_link_pic (info))
3319 memcpy (plt->contents + iplt_offset, elf_s390_plt_entry,
3322 /* Adjust jump to the first plt entry. */
3323 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3324 plt->contents + iplt_offset + 20);
3326 /* Push the GOT offset field. */
3327 bfd_put_32 (output_bfd,
3328 (gotplt->output_section->vma
3330 plt->contents + iplt_offset + 24);
3332 else if (got_offset < 4096)
3334 /* The GOT offset is small enough to be used directly as
3336 memcpy (plt->contents + iplt_offset,
3337 elf_s390_plt_pic12_entry,
3340 /* Put in the GOT offset as displacement value. The 0xc000
3341 value comes from the first word of the plt entry. Look
3342 at the elf_s390_plt_pic16_entry content. */
3343 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3344 plt->contents + iplt_offset + 2);
3346 /* Adjust the jump to the first plt entry. */
3347 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3348 plt->contents + iplt_offset + 20);
3350 else if (got_offset < 32768)
3352 /* The GOT offset is too big for a displacement but small
3353 enough to be a signed 16 bit immediate value as it can be
3354 used in an lhi instruction. */
3355 memcpy (plt->contents + iplt_offset,
3356 elf_s390_plt_pic16_entry,
3359 /* Put in the GOT offset for the lhi instruction. */
3360 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3361 plt->contents + iplt_offset + 2);
3363 /* Adjust the jump to the first plt entry. */
3364 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3365 plt->contents + iplt_offset + 20);
3369 memcpy (plt->contents + iplt_offset,
3370 elf_s390_plt_pic_entry,
3373 /* Adjust the jump to the first plt entry. */
3374 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3375 plt->contents + iplt_offset + 20);
3377 /* Push the GOT offset field. */
3378 bfd_put_32 (output_bfd, got_offset,
3379 plt->contents + iplt_offset + 24);
3381 /* Insert offset into reloc. table here. */
3382 bfd_put_32 (output_bfd, relplt->output_offset +
3383 iplt_index * RELA_ENTRY_SIZE,
3384 plt->contents + iplt_offset + 28);
3386 /* Fill in the entry in the global offset table.
3387 Points to instruction after GOT offset. */
3388 bfd_put_32 (output_bfd,
3389 (plt->output_section->vma
3390 + plt->output_offset
3393 gotplt->contents + igotiplt_offset);
3395 /* Fill in the entry in the .rela.plt section. */
3396 rela.r_offset = gotplt->output_section->vma + got_offset;
3400 || ((bfd_link_executable (info)
3401 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3404 /* The symbol can be locally resolved. */
3405 rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE);
3406 rela.r_addend = resolver_address;
3410 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3414 loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE;
3415 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3418 /* Finish up dynamic symbol handling. We set the contents of various
3419 dynamic sections here. */
3422 elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3423 struct bfd_link_info *info,
3424 struct elf_link_hash_entry *h,
3425 Elf_Internal_Sym *sym)
3427 struct elf_s390_link_hash_table *htab;
3428 struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
3430 htab = elf_s390_hash_table (info);
3432 if (h->plt.offset != (bfd_vma) -1)
3436 Elf_Internal_Rela rela;
3438 bfd_vma relative_offset;
3440 /* This symbol has an entry in the procedure linkage table. Set
3442 if (s390_is_ifunc_symbol_p (h) && h->def_regular)
3444 elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3445 htab, h->plt.offset,
3446 eh->ifunc_resolver_address +
3447 eh->ifunc_resolver_section->output_offset +
3448 eh->ifunc_resolver_section->output_section->vma);
3449 /* Do not return yet. Handling of explicit GOT slots of
3450 IFUNC symbols is below. */
3454 if (h->dynindx == -1
3455 || htab->elf.splt == NULL
3456 || htab->elf.sgotplt == NULL
3457 || htab->elf.srelplt == NULL)
3461 Current offset - size first entry / entry size. */
3462 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3464 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3466 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3468 /* S390 uses halfwords for relative branch calc! */
3469 relative_offset = - ((PLT_FIRST_ENTRY_SIZE +
3470 (PLT_ENTRY_SIZE * plt_index) + 18) / 2);
3471 /* If offset is > 32768, branch to a previous branch
3472 390 can only handle +-64 K jumps. */
3473 if ( -32768 > (int) relative_offset )
3475 = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2);
3477 /* Fill in the entry in the procedure linkage table. */
3478 if (!bfd_link_pic (info))
3480 memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry,
3483 /* Adjust jump to the first plt entry. */
3484 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3485 htab->elf.splt->contents + h->plt.offset + 20);
3487 /* Push the GOT offset field. */
3488 bfd_put_32 (output_bfd,
3489 (htab->elf.sgotplt->output_section->vma
3490 + htab->elf.sgotplt->output_offset
3492 htab->elf.splt->contents + h->plt.offset + 24);
3494 else if (got_offset < 4096)
3496 /* The GOT offset is small enough to be used directly as
3498 memcpy (htab->elf.splt->contents + h->plt.offset,
3499 elf_s390_plt_pic12_entry,
3502 /* Put in the GOT offset as displacement value. The 0xc000
3503 value comes from the first word of the plt entry. Look
3504 at the elf_s390_plt_pic12_entry content. */
3505 bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset,
3506 htab->elf.splt->contents + h->plt.offset + 2);
3508 /* Adjust the jump to the first plt entry. */
3509 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3510 htab->elf.splt->contents + h->plt.offset + 20);
3512 else if (got_offset < 32768)
3514 /* The GOT offset is too big for a displacement but small
3515 enough to be a signed 16 bit immediate value as it can be
3516 used in an lhi instruction. */
3517 memcpy (htab->elf.splt->contents + h->plt.offset,
3518 elf_s390_plt_pic16_entry,
3521 /* Put in the GOT offset for the lhi instruction. */
3522 bfd_put_16 (output_bfd, (bfd_vma)got_offset,
3523 htab->elf.splt->contents + h->plt.offset + 2);
3525 /* Adjust the jump to the first plt entry. */
3526 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3527 htab->elf.splt->contents + h->plt.offset + 20);
3531 memcpy (htab->elf.splt->contents + h->plt.offset,
3532 elf_s390_plt_pic_entry,
3535 /* Adjust the jump to the first plt entry. */
3536 bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16),
3537 htab->elf.splt->contents + h->plt.offset + 20);
3539 /* Push the GOT offset field. */
3540 bfd_put_32 (output_bfd, got_offset,
3541 htab->elf.splt->contents + h->plt.offset + 24);
3543 /* Insert offset into reloc. table here. */
3544 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
3545 htab->elf.splt->contents + h->plt.offset + 28);
3547 /* Fill in the entry in the global offset table.
3548 Points to instruction after GOT offset. */
3549 bfd_put_32 (output_bfd,
3550 (htab->elf.splt->output_section->vma
3551 + htab->elf.splt->output_offset
3554 htab->elf.sgotplt->contents + got_offset);
3556 /* Fill in the entry in the .rela.plt section. */
3557 rela.r_offset = (htab->elf.sgotplt->output_section->vma
3558 + htab->elf.sgotplt->output_offset
3560 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT);
3562 loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
3563 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3565 if (!h->def_regular)
3567 /* Mark the symbol as undefined, rather than as defined in
3568 the .plt section. Leave the value alone. This is a clue
3569 for the dynamic linker, to make function pointer
3570 comparisons work between an application and shared
3572 sym->st_shndx = SHN_UNDEF;
3577 if (h->got.offset != (bfd_vma) -1
3578 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3579 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3580 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3582 Elf_Internal_Rela rela;
3585 /* This symbol has an entry in the global offset table. Set it
3588 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
3591 rela.r_offset = (htab->elf.sgot->output_section->vma
3592 + htab->elf.sgot->output_offset
3593 + (h->got.offset &~ (bfd_vma) 1));
3595 /* If this is a static link, or it is a -Bsymbolic link and the
3596 symbol is defined locally or was forced to be local because
3597 of a version file, we just want to emit a RELATIVE reloc.
3598 The entry in the global offset table will already have been
3599 initialized in the relocate_section function. */
3600 if (h->def_regular && s390_is_ifunc_symbol_p (h))
3602 if (bfd_link_pic (info))
3604 /* An explicit GOT slot usage needs GLOB_DAT. If the
3605 symbol references local the implicit got.iplt slot
3606 will be used and the IRELATIVE reloc has been created
3612 /* For non-shared objects explicit GOT slots must be
3613 filled with the PLT slot address for pointer
3614 equality reasons. */
3615 bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma
3616 + htab->elf.iplt->output_offset
3618 htab->elf.sgot->contents + h->got.offset);
3622 else if (bfd_link_pic (info)
3623 && SYMBOL_REFERENCES_LOCAL (info, h))
3625 /* If this is a static link, or it is a -Bsymbolic link and
3626 the symbol is defined locally or was forced to be local
3627 because of a version file, we just want to emit a
3628 RELATIVE reloc. The entry in the global offset table
3629 will already have been initialized in the
3630 relocate_section function. */
3631 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
3633 BFD_ASSERT((h->got.offset & 1) != 0);
3634 rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
3635 rela.r_addend = (h->root.u.def.value
3636 + h->root.u.def.section->output_section->vma
3637 + h->root.u.def.section->output_offset);
3641 BFD_ASSERT((h->got.offset & 1) == 0);
3643 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
3644 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT);
3648 loc = htab->elf.srelgot->contents;
3649 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3650 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3655 Elf_Internal_Rela rela;
3659 /* This symbols needs a copy reloc. Set it up. */
3661 if (h->dynindx == -1
3662 || (h->root.type != bfd_link_hash_defined
3663 && h->root.type != bfd_link_hash_defweak)
3664 || htab->elf.srelbss == NULL
3665 || htab->elf.sreldynrelro == NULL)
3668 rela.r_offset = (h->root.u.def.value
3669 + h->root.u.def.section->output_section->vma
3670 + h->root.u.def.section->output_offset);
3671 rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY);
3673 if (h->root.u.def.section == htab->elf.sdynrelro)
3674 s = htab->elf.sreldynrelro;
3676 s = htab->elf.srelbss;
3677 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
3678 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3681 /* Mark some specially defined symbols as absolute. */
3682 if (h == htab->elf.hdynamic
3683 || h == htab->elf.hgot
3684 || h == htab->elf.hplt)
3685 sym->st_shndx = SHN_ABS;
3690 /* Used to decide how to sort relocs in an optimal manner for the
3691 dynamic linker, before writing them out. */
3693 static enum elf_reloc_type_class
3694 elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3695 const asection *rel_sec ATTRIBUTE_UNUSED,
3696 const Elf_Internal_Rela *rela)
3698 bfd *abfd = info->output_bfd;
3699 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3700 struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3701 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
3702 Elf_Internal_Sym sym;
3704 if (htab->elf.dynsym == NULL
3705 || !bed->s->swap_symbol_in (abfd,
3706 (htab->elf.dynsym->contents
3707 + r_symndx * bed->s->sizeof_sym),
3711 /* Check relocation against STT_GNU_IFUNC symbol. */
3712 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3713 return reloc_class_ifunc;
3715 switch ((int) ELF32_R_TYPE (rela->r_info))
3717 case R_390_RELATIVE:
3718 return reloc_class_relative;
3719 case R_390_JMP_SLOT:
3720 return reloc_class_plt;
3722 return reloc_class_copy;
3724 return reloc_class_normal;
3728 /* Finish up the dynamic sections. */
3731 elf_s390_finish_dynamic_sections (bfd *output_bfd,
3732 struct bfd_link_info *info)
3734 struct elf_s390_link_hash_table *htab;
3740 htab = elf_s390_hash_table (info);
3741 dynobj = htab->elf.dynobj;
3742 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3744 if (htab->elf.dynamic_sections_created)
3746 Elf32_External_Dyn *dyncon, *dynconend;
3748 if (sdyn == NULL || htab->elf.sgot == NULL)
3751 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3752 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3753 for (; dyncon < dynconend; dyncon++)
3755 Elf_Internal_Dyn dyn;
3758 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3766 s = htab->elf.sgotplt;
3767 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3771 s = htab->elf.srelplt;
3772 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3776 dyn.d_un.d_val = htab->elf.srelplt->size;
3777 if (htab->elf.irelplt)
3778 dyn.d_un.d_val += htab->elf.irelplt->size;
3782 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3785 /* Fill in the special first entry in the procedure linkage table. */
3786 if (htab->elf.splt && htab->elf.splt->size > 0)
3788 memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE);
3789 if (bfd_link_pic (info))
3791 memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry,
3792 PLT_FIRST_ENTRY_SIZE);
3796 memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry,
3797 PLT_FIRST_ENTRY_SIZE);
3798 bfd_put_32 (output_bfd,
3799 htab->elf.sgotplt->output_section->vma
3800 + htab->elf.sgotplt->output_offset,
3801 htab->elf.splt->contents + 24);
3803 elf_section_data (htab->elf.splt->output_section)
3804 ->this_hdr.sh_entsize = 4;
3809 if (htab->elf.sgotplt)
3811 /* Fill in the first three entries in the global offset table. */
3812 if (htab->elf.sgotplt->size > 0)
3814 bfd_put_32 (output_bfd,
3815 (sdyn == NULL ? (bfd_vma) 0
3816 : sdyn->output_section->vma + sdyn->output_offset),
3817 htab->elf.sgotplt->contents);
3818 /* One entry for shared object struct ptr. */
3819 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4);
3820 /* One entry for _dl_runtime_resolve. */
3821 bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
3824 elf_section_data (htab->elf.sgotplt->output_section)
3825 ->this_hdr.sh_entsize = 4;
3827 /* Finish dynamic symbol for local IFUNC symbols. */
3828 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
3830 struct plt_entry *local_plt;
3831 Elf_Internal_Sym *isym;
3832 Elf_Internal_Shdr *symtab_hdr;
3834 symtab_hdr = &elf_symtab_hdr (ibfd);
3836 if (!is_s390_elf (ibfd))
3839 local_plt = elf_s390_local_plt (ibfd);
3840 if (local_plt != NULL)
3841 for (i = 0; i < symtab_hdr->sh_info; i++)
3843 if (local_plt[i].plt.offset != (bfd_vma) -1)
3845 asection *sec = local_plt[i].sec;
3846 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3850 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3851 elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3852 local_plt[i].plt.offset,
3854 + sec->output_section->vma
3855 + sec->output_offset);
3863 /* Support for core dump NOTE sections. */
3866 elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note)
3871 switch (note->descsz)
3876 case 224: /* S/390 Linux. */
3878 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
3881 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
3889 /* Make a ".reg/999" section. */
3890 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3891 size, note->descpos + offset);
3895 elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3897 switch (note->descsz)
3902 case 124: /* sizeof(struct elf_prpsinfo) on s390 */
3903 elf_tdata (abfd)->core->pid
3904 = bfd_get_32 (abfd, note->descdata + 12);
3905 elf_tdata (abfd)->core->program
3906 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
3907 elf_tdata (abfd)->core->command
3908 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
3912 /* Note that for some reason, a spurious space is tacked
3913 onto the end of the args in some (at least one anyway)
3914 implementations, so strip it off if it exists. */
3917 char *command = elf_tdata (abfd)->core->command;
3918 int n = strlen (command);
3920 if (0 < n && command[n - 1] == ' ')
3921 command[n - 1] = '\0';
3928 elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz,
3940 char data[124] = { 0 };
3941 const char *fname, *psargs;
3943 va_start (ap, note_type);
3944 fname = va_arg (ap, const char *);
3945 psargs = va_arg (ap, const char *);
3948 strncpy (data + 28, fname, 16);
3949 strncpy (data + 44, psargs, 80);
3950 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3951 &data, sizeof (data));
3956 char data[224] = { 0 };
3961 va_start (ap, note_type);
3962 pid = va_arg (ap, long);
3963 cursig = va_arg (ap, int);
3964 gregs = va_arg (ap, const void *);
3967 bfd_put_16 (abfd, cursig, data + 12);
3968 bfd_put_32 (abfd, pid, data + 24);
3969 memcpy (data + 72, gregs, 144);
3970 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
3971 &data, sizeof (data));
3977 /* Return address for Ith PLT stub in section PLT, for relocation REL
3978 or (bfd_vma) -1 if it should not be included. */
3981 elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3982 const arelent *rel ATTRIBUTE_UNUSED)
3984 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3987 /* Merge backend specific data from an object file to the output
3988 object file when linking. */
3991 elf32_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
3993 bfd *obfd = info->output_bfd;
3995 if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
3998 if (!elf_s390_merge_obj_attributes (ibfd, info))
4001 elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags;
4006 #define TARGET_BIG_SYM s390_elf32_vec
4007 #define TARGET_BIG_NAME "elf32-s390"
4008 #define ELF_ARCH bfd_arch_s390
4009 #define ELF_TARGET_ID S390_ELF_DATA
4010 #define ELF_MACHINE_CODE EM_S390
4011 #define ELF_MACHINE_ALT1 EM_S390_OLD
4012 #define ELF_MAXPAGESIZE 0x1000
4014 #define elf_backend_can_gc_sections 1
4015 #define elf_backend_can_refcount 1
4016 #define elf_backend_want_got_plt 1
4017 #define elf_backend_plt_readonly 1
4018 #define elf_backend_want_plt_sym 0
4019 #define elf_backend_got_header_size 12
4020 #define elf_backend_want_dynrelro 1
4021 #define elf_backend_rela_normal 1
4023 #define elf_info_to_howto elf_s390_info_to_howto
4025 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
4026 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
4027 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
4028 #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
4030 #define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
4032 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
4033 #define elf_backend_check_relocs elf_s390_check_relocs
4034 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
4035 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
4036 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4037 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
4038 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
4039 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
4040 #define elf_backend_relocate_section elf_s390_relocate_section
4041 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
4042 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4043 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
4044 #define elf_backend_grok_psinfo elf_s390_grok_psinfo
4045 #define elf_backend_write_core_note elf_s390_write_core_note
4046 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
4047 #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
4048 #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
4050 #define bfd_elf32_mkobject elf_s390_mkobject
4051 #define elf_backend_object_p elf_s390_object_p
4053 #define elf_backend_linux_prpsinfo32_ugid16 TRUE
4055 #include "elf32-target.h"