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[thirdparty/binutils-gdb.git] / bfd / elf64-s390.c
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a85d7ed0 1/* IBM S/390-specific support for 64-bit ELF
0ffa91dd 2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
3eb128b2 3 Free Software Foundation, Inc.
a85d7ed0
NC		 4 Contributed Martin Schwidefsky (schwidefsky@de.ibm.com).
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
cd123cb7 10 the Free Software Foundation; either version 3 of the License, or
a85d7ed0
NC		 11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
3e110533 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
53e09e0a 21 02110-1301, USA. */
a85d7ed0 22
a85d7ed0 23#include "sysdep.h"
3db64b00 24#include "bfd.h"
a85d7ed0
NC		 25#include "bfdlink.h"
26#include "libbfd.h"
27#include "elf-bfd.h"
28
29static reloc_howto_type *elf_s390_reloc_type_lookup
30 PARAMS ((bfd *, bfd_reloc_code_real_type));
31static void elf_s390_info_to_howto
32 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
b34976b6 33static bfd_boolean elf_s390_is_local_label_name
0451c93c
MS		 34 PARAMS ((bfd *, const char *));
35static struct bfd_hash_entry *link_hash_newfunc
a85d7ed0
NC		 36 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
37static struct bfd_link_hash_table *elf_s390_link_hash_table_create
38 PARAMS ((bfd *));
b34976b6 39static bfd_boolean create_got_section
0451c93c 40 PARAMS((bfd *, struct bfd_link_info *));
b34976b6 41static bfd_boolean elf_s390_create_dynamic_sections
0451c93c
MS		 42 PARAMS((bfd *, struct bfd_link_info *));
43static void elf_s390_copy_indirect_symbol
fcfa13d2 44 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *,
b48fa14c 45 struct elf_link_hash_entry *));
b34976b6 46static bfd_boolean elf_s390_check_relocs
a85d7ed0
NC		 47 PARAMS ((bfd *, struct bfd_link_info *, asection *,
48 const Elf_Internal_Rela *));
5236c819
MS		 49struct elf_s390_link_hash_entry;
50static void elf_s390_adjust_gotplt
51 PARAMS ((struct elf_s390_link_hash_entry *));
b34976b6 52static bfd_boolean elf_s390_adjust_dynamic_symbol
a85d7ed0 53 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
b34976b6 54static bfd_boolean allocate_dynrelocs
0451c93c 55 PARAMS ((struct elf_link_hash_entry *, PTR));
b34976b6 56static bfd_boolean readonly_dynrelocs
0451c93c 57 PARAMS ((struct elf_link_hash_entry *, PTR));
b34976b6 58static bfd_boolean elf_s390_size_dynamic_sections
a85d7ed0 59 PARAMS ((bfd *, struct bfd_link_info *));
b34976b6 60static bfd_boolean elf_s390_relocate_section
a85d7ed0
NC		 61 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
62 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
b34976b6 63static bfd_boolean elf_s390_finish_dynamic_symbol
a85d7ed0
NC		 64 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
65 Elf_Internal_Sym *));
0451c93c
MS		 66static enum elf_reloc_type_class elf_s390_reloc_type_class
67 PARAMS ((const Elf_Internal_Rela *));
b34976b6 68static bfd_boolean elf_s390_finish_dynamic_sections
a85d7ed0 69 PARAMS ((bfd *, struct bfd_link_info *));
5236c819
MS		 70static bfd_boolean elf_s390_object_p
71 PARAMS ((bfd *));
69fc87f1
MS		 72static int elf_s390_tls_transition
73 PARAMS ((struct bfd_link_info *, int, int));
74static bfd_reloc_status_type s390_tls_reloc
75 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
76static bfd_vma dtpoff_base
77 PARAMS ((struct bfd_link_info *));
78static bfd_vma tpoff
79 PARAMS ((struct bfd_link_info *, bfd_vma));
80static void invalid_tls_insn
81 PARAMS ((bfd *, asection *, Elf_Internal_Rela *));
bd1ea41b
MS		 82static bfd_reloc_status_type s390_elf_ldisp_reloc
83 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
a85d7ed0 84
a85d7ed0
NC		 85#include "elf/s390.h"
86
87/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
88 from smaller values. Start with zero, widen, *then* decrement. */
89#define MINUS_ONE (((bfd_vma)0) - 1)
90
91/* The relocation "howto" table. */
92static reloc_howto_type elf_howto_table[] =
93{
94 HOWTO (R_390_NONE, /* type */
95 0, /* rightshift */
96 0, /* size (0 = byte, 1 = short, 2 = long) */
97 0, /* bitsize */
b34976b6 98 FALSE, /* pc_relative */
a85d7ed0
NC		 99 0, /* bitpos */
100 complain_overflow_dont, /* complain_on_overflow */
101 bfd_elf_generic_reloc, /* special_function */
102 "R_390_NONE", /* name */
b34976b6 103 FALSE, /* partial_inplace */
a85d7ed0
NC		 104 0, /* src_mask */
105 0, /* dst_mask */
b34976b6
AM		 106 FALSE), /* pcrel_offset */
107
5236c819
MS		 108 HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
109 bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
110 HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
111 bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
112 HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
113 bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
114 HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
115 bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
116 HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
117 bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
15f8604d 118 HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
5236c819
MS		 119 bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
120 HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
121 bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
122 HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
123 bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
124 HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
125 bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE),
126 HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE),
128 HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
129 bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE),
130 HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
131 bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE),
132 HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
133 bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE),
134 HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
135 bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE),
136 HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
137 bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
138 HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
139 bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
140 HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
141 bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
142 HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
143 bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
144 HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
145 bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
146 HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
147 bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
148 HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
150 HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE),
152 HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
153 bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
154 HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
155 bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
156 HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
157 bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
158 HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
159 bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE),
160 HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
161 bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
162 HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
163 bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE),
164 HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
165 bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
166 HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
167 bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
168 HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
169 bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
170 HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
171 bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE),
172 HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
173 bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE),
174 HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
175 bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
176 HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
177 bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
178 HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
179 bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE),
69fc87f1
MS		 180 HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
181 s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
182 HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
183 s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
184 HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
185 s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
186 EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */
187 HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
188 bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
189 HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
190 bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
191 EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */
192 HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
193 bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
194 EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */
195 HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
196 bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
197 EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */
198 HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
199 bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
200 HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
201 bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
202 EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */
203 HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
204 bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
205 EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */
206 HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
207 bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
208 HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
209 bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
210 HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
211 bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
212 HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
213 bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
bd1ea41b
MS		 214 HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
215 s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
216 HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
217 s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
218 HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
219 s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
220 HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
221 s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
a85d7ed0
NC		 222};
223
224/* GNU extension to record C++ vtable hierarchy. */
225static reloc_howto_type elf64_s390_vtinherit_howto =
b34976b6 226 HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
a85d7ed0 227static reloc_howto_type elf64_s390_vtentry_howto =
b34976b6 228 HOWTO (R_390_GNU_VTENTRY, 0,4,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
a85d7ed0
NC		 229
230static reloc_howto_type *
231elf_s390_reloc_type_lookup (abfd, code)
232 bfd *abfd ATTRIBUTE_UNUSED;
233 bfd_reloc_code_real_type code;
234{
0451c93c
MS		 235 switch (code)
236 {
237 case BFD_RELOC_NONE:
238 return &elf_howto_table[(int) R_390_NONE];
239 case BFD_RELOC_8:
240 return &elf_howto_table[(int) R_390_8];
241 case BFD_RELOC_390_12:
242 return &elf_howto_table[(int) R_390_12];
243 case BFD_RELOC_16:
244 return &elf_howto_table[(int) R_390_16];
245 case BFD_RELOC_32:
246 return &elf_howto_table[(int) R_390_32];
247 case BFD_RELOC_CTOR:
248 return &elf_howto_table[(int) R_390_32];
249 case BFD_RELOC_32_PCREL:
250 return &elf_howto_table[(int) R_390_PC32];
251 case BFD_RELOC_390_GOT12:
252 return &elf_howto_table[(int) R_390_GOT12];
253 case BFD_RELOC_32_GOT_PCREL:
254 return &elf_howto_table[(int) R_390_GOT32];
255 case BFD_RELOC_390_PLT32:
256 return &elf_howto_table[(int) R_390_PLT32];
257 case BFD_RELOC_390_COPY:
258 return &elf_howto_table[(int) R_390_COPY];
259 case BFD_RELOC_390_GLOB_DAT:
260 return &elf_howto_table[(int) R_390_GLOB_DAT];
261 case BFD_RELOC_390_JMP_SLOT:
262 return &elf_howto_table[(int) R_390_JMP_SLOT];
263 case BFD_RELOC_390_RELATIVE:
264 return &elf_howto_table[(int) R_390_RELATIVE];
265 case BFD_RELOC_32_GOTOFF:
5236c819 266 return &elf_howto_table[(int) R_390_GOTOFF32];
0451c93c
MS		 267 case BFD_RELOC_390_GOTPC:
268 return &elf_howto_table[(int) R_390_GOTPC];
269 case BFD_RELOC_390_GOT16:
270 return &elf_howto_table[(int) R_390_GOT16];
271 case BFD_RELOC_16_PCREL:
272 return &elf_howto_table[(int) R_390_PC16];
273 case BFD_RELOC_390_PC16DBL:
274 return &elf_howto_table[(int) R_390_PC16DBL];
275 case BFD_RELOC_390_PLT16DBL:
276 return &elf_howto_table[(int) R_390_PLT16DBL];
0451c93c
MS		 277 case BFD_RELOC_390_PC32DBL:
278 return &elf_howto_table[(int) R_390_PC32DBL];
279 case BFD_RELOC_390_PLT32DBL:
280 return &elf_howto_table[(int) R_390_PLT32DBL];
281 case BFD_RELOC_390_GOTPCDBL:
282 return &elf_howto_table[(int) R_390_GOTPCDBL];
283 case BFD_RELOC_64:
284 return &elf_howto_table[(int) R_390_64];
285 case BFD_RELOC_64_PCREL:
286 return &elf_howto_table[(int) R_390_PC64];
287 case BFD_RELOC_390_GOT64:
288 return &elf_howto_table[(int) R_390_GOT64];
289 case BFD_RELOC_390_PLT64:
290 return &elf_howto_table[(int) R_390_PLT64];
291 case BFD_RELOC_390_GOTENT:
292 return &elf_howto_table[(int) R_390_GOTENT];
5236c819
MS		 293 case BFD_RELOC_16_GOTOFF:
294 return &elf_howto_table[(int) R_390_GOTOFF16];
295 case BFD_RELOC_390_GOTOFF64:
296 return &elf_howto_table[(int) R_390_GOTOFF64];
297 case BFD_RELOC_390_GOTPLT12:
298 return &elf_howto_table[(int) R_390_GOTPLT12];
299 case BFD_RELOC_390_GOTPLT16:
300 return &elf_howto_table[(int) R_390_GOTPLT16];
301 case BFD_RELOC_390_GOTPLT32:
302 return &elf_howto_table[(int) R_390_GOTPLT32];
303 case BFD_RELOC_390_GOTPLT64:
304 return &elf_howto_table[(int) R_390_GOTPLT64];
305 case BFD_RELOC_390_GOTPLTENT:
306 return &elf_howto_table[(int) R_390_GOTPLTENT];
307 case BFD_RELOC_390_PLTOFF16:
308 return &elf_howto_table[(int) R_390_PLTOFF16];
309 case BFD_RELOC_390_PLTOFF32:
310 return &elf_howto_table[(int) R_390_PLTOFF32];
311 case BFD_RELOC_390_PLTOFF64:
312 return &elf_howto_table[(int) R_390_PLTOFF64];
69fc87f1
MS		 313 case BFD_RELOC_390_TLS_LOAD:
314 return &elf_howto_table[(int) R_390_TLS_LOAD];
315 case BFD_RELOC_390_TLS_GDCALL:
316 return &elf_howto_table[(int) R_390_TLS_GDCALL];
317 case BFD_RELOC_390_TLS_LDCALL:
318 return &elf_howto_table[(int) R_390_TLS_LDCALL];
319 case BFD_RELOC_390_TLS_GD64:
320 return &elf_howto_table[(int) R_390_TLS_GD64];
321 case BFD_RELOC_390_TLS_GOTIE12:
322 return &elf_howto_table[(int) R_390_TLS_GOTIE12];
323 case BFD_RELOC_390_TLS_GOTIE64:
324 return &elf_howto_table[(int) R_390_TLS_GOTIE64];
325 case BFD_RELOC_390_TLS_LDM64:
326 return &elf_howto_table[(int) R_390_TLS_LDM64];
327 case BFD_RELOC_390_TLS_IE64:
328 return &elf_howto_table[(int) R_390_TLS_IE64];
329 case BFD_RELOC_390_TLS_IEENT:
330 return &elf_howto_table[(int) R_390_TLS_IEENT];
331 case BFD_RELOC_390_TLS_LE64:
332 return &elf_howto_table[(int) R_390_TLS_LE64];
333 case BFD_RELOC_390_TLS_LDO64:
334 return &elf_howto_table[(int) R_390_TLS_LDO64];
335 case BFD_RELOC_390_TLS_DTPMOD:
336 return &elf_howto_table[(int) R_390_TLS_DTPMOD];
337 case BFD_RELOC_390_TLS_DTPOFF:
338 return &elf_howto_table[(int) R_390_TLS_DTPOFF];
339 case BFD_RELOC_390_TLS_TPOFF:
340 return &elf_howto_table[(int) R_390_TLS_TPOFF];
bd1ea41b
MS		 341 case BFD_RELOC_390_20:
342 return &elf_howto_table[(int) R_390_20];
343 case BFD_RELOC_390_GOT20:
344 return &elf_howto_table[(int) R_390_GOT20];
345 case BFD_RELOC_390_GOTPLT20:
346 return &elf_howto_table[(int) R_390_GOTPLT20];
347 case BFD_RELOC_390_TLS_GOTIE20:
348 return &elf_howto_table[(int) R_390_TLS_GOTIE20];
5236c819
MS		 349 case BFD_RELOC_VTABLE_INHERIT:
350 return &elf64_s390_vtinherit_howto;
351 case BFD_RELOC_VTABLE_ENTRY:
352 return &elf64_s390_vtentry_howto;
0451c93c
MS		 353 default:
354 break;
355 }
a85d7ed0
NC		 356 return 0;
357}
358
157090f7
AM		 359static reloc_howto_type *
360elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
361 const char *r_name)
362{
363 unsigned int i;
364
365 for (i = 0;
366 i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
367 i++)
368 if (elf_howto_table[i].name != NULL
369 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
370 return &elf_howto_table[i];
371
372 if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
373 return &elf64_s390_vtinherit_howto;
374 if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
375 return &elf64_s390_vtentry_howto;
376
377 return NULL;
378}
379
a85d7ed0
NC		 380/* We need to use ELF64_R_TYPE so we have our own copy of this function,
381 and elf64-s390.c has its own copy. */
382
383static void
384elf_s390_info_to_howto (abfd, cache_ptr, dst)
385 bfd *abfd ATTRIBUTE_UNUSED;
386 arelent *cache_ptr;
387 Elf_Internal_Rela *dst;
388{
d0fb9a8d
JJ		 389 unsigned int r_type = ELF64_R_TYPE(dst->r_info);
390 switch (r_type)
a85d7ed0
NC		 391 {
392 case R_390_GNU_VTINHERIT:
393 cache_ptr->howto = &elf64_s390_vtinherit_howto;
394 break;
395
396 case R_390_GNU_VTENTRY:
397 cache_ptr->howto = &elf64_s390_vtentry_howto;
398 break;
399
400 default:
d0fb9a8d
JJ		 401 if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
402 {
403 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
404 abfd, (int) r_type);
405 r_type = R_390_NONE;
406 }
407 cache_ptr->howto = &elf_howto_table[r_type];
99c79b2e 408 }
a85d7ed0
NC		 409}
410
69fc87f1
MS		 411/* A relocation function which doesn't do anything. */
412static bfd_reloc_status_type
413s390_tls_reloc (abfd, reloc_entry, symbol, data, input_section,
26e41594 414 output_bfd, error_message)
69fc87f1
MS		 415 bfd *abfd ATTRIBUTE_UNUSED;
416 arelent *reloc_entry;
417 asymbol *symbol ATTRIBUTE_UNUSED;
418 PTR data ATTRIBUTE_UNUSED;
419 asection *input_section;
420 bfd *output_bfd;
421 char **error_message ATTRIBUTE_UNUSED;
422{
423 if (output_bfd)
424 reloc_entry->address += input_section->output_offset;
425 return bfd_reloc_ok;
426}
427
bd1ea41b
MS		 428/* Handle the large displacement relocs. */
429static bfd_reloc_status_type
430s390_elf_ldisp_reloc (abfd, reloc_entry, symbol, data, input_section,
431 output_bfd, error_message)
432 bfd *abfd;
433 arelent *reloc_entry;
434 asymbol *symbol;
435 PTR data;
436 asection *input_section;
437 bfd *output_bfd;
438 char **error_message ATTRIBUTE_UNUSED;
439{
440 reloc_howto_type *howto = reloc_entry->howto;
441 bfd_vma relocation;
442 bfd_vma insn;
443
444 if (output_bfd != (bfd *) NULL
445 && (symbol->flags & BSF_SECTION_SYM) == 0
446 && (! howto->partial_inplace
447 || reloc_entry->addend == 0))
448 {
449 reloc_entry->address += input_section->output_offset;
450 return bfd_reloc_ok;
451 }
452 if (output_bfd != NULL)
453 return bfd_reloc_continue;
454
07515404 455 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
bd1ea41b
MS		 456 return bfd_reloc_outofrange;
457
458 relocation = (symbol->value
459 + symbol->section->output_section->vma
460 + symbol->section->output_offset);
461 relocation += reloc_entry->addend;
462 if (howto->pc_relative)
463 {
464 relocation -= (input_section->output_section->vma
465 + input_section->output_offset);
466 relocation -= reloc_entry->address;
467 }
468
469 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
470 insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
471 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
472
473 if ((bfd_signed_vma) relocation < - 0x80000
474 || (bfd_signed_vma) relocation > 0x7ffff)
475 return bfd_reloc_overflow;
476 else
477 return bfd_reloc_ok;
478}
479
b34976b6 480static bfd_boolean
a85d7ed0
NC		 481elf_s390_is_local_label_name (abfd, name)
482 bfd *abfd;
483 const char *name;
484{
485 if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
b34976b6 486 return TRUE;
a85d7ed0
NC		 487
488 return _bfd_elf_is_local_label_name (abfd, name);
489}
490
491/* Functions for the 390 ELF linker. */
492
493/* The name of the dynamic interpreter. This is put in the .interp
494 section. */
495
496#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
497
64285810
MS		 498/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
499 copying dynamic variables from a shared lib into an app's dynbss
500 section, and instead use a dynamic relocation to point into the
501 shared lib. */
502#define ELIMINATE_COPY_RELOCS 1
503
a85d7ed0
NC		 504/* The size in bytes of the first entry in the procedure linkage table. */
505#define PLT_FIRST_ENTRY_SIZE 32
506/* The size in bytes of an entry in the procedure linkage table. */
99c79b2e 507#define PLT_ENTRY_SIZE 32
a85d7ed0
NC		 508
509#define GOT_ENTRY_SIZE 8
510
511/* The first three entries in a procedure linkage table are reserved,
512 and the initial contents are unimportant (we zero them out).
513 Subsequent entries look like this. See the SVR4 ABI 386
514 supplement to see how this works. */
515
516/* For the s390, simple addr offset can only be 0 - 4096.
517 To use the full 16777216 TB address space, several instructions
518 are needed to load an address in a register and execute
519 a branch( or just saving the address)
520
99c79b2e 521 Furthermore, only r 0 and 1 are free to use!!! */
a85d7ed0
NC		 522
523/* The first 3 words in the GOT are then reserved.
524 Word 0 is the address of the dynamic table.
525 Word 1 is a pointer to a structure describing the object
526 Word 2 is used to point to the loader entry address.
527
528 The code for PLT entries looks like this:
529
530 The GOT holds the address in the PLT to be executed.
531 The loader then gets:
532 24(15) = Pointer to the structure describing the object.
99c79b2e 533 28(15) = Offset in symbol table
a85d7ed0
NC		 534 The loader must then find the module where the function is
535 and insert the address in the GOT.
536
537 PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
538 LG 1,0(1) # 6 bytes Load address from GOT in r1
539 BCR 15,1 # 2 bytes Jump to address
540 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
541 LGF 1,12(1) # 6 bytes Load offset in symbl table in r1
542 BRCL 15,-x # 6 bytes Jump to start of PLT
543 .long ? # 4 bytes offset into symbol table
544
545 Total = 32 bytes per PLT entry
546 Fixup at offset 2: relative address to GOT entry
547 Fixup at offset 22: relative branch to PLT0
548 Fixup at offset 28: 32 bit offset into symbol table
549
550 A 32 bit offset into the symbol table is enough. It allows for symbol
551 tables up to a size of 2 gigabyte. A single dynamic object (the main
552 program, any shared library) is limited to 4GB in size and I want to see
553 the program that manages to have a symbol table of more than 2 GB with a
554 total size of at max 4 GB. */
555
dc810e39
AM		 556#define PLT_ENTRY_WORD0 (bfd_vma) 0xc0100000
557#define PLT_ENTRY_WORD1 (bfd_vma) 0x0000e310
558#define PLT_ENTRY_WORD2 (bfd_vma) 0x10000004
559#define PLT_ENTRY_WORD3 (bfd_vma) 0x07f10d10
560#define PLT_ENTRY_WORD4 (bfd_vma) 0xe310100c
561#define PLT_ENTRY_WORD5 (bfd_vma) 0x0014c0f4
562#define PLT_ENTRY_WORD6 (bfd_vma) 0x00000000
563#define PLT_ENTRY_WORD7 (bfd_vma) 0x00000000
a85d7ed0
NC		 564
565/* The first PLT entry pushes the offset into the symbol table
566 from R1 onto the stack at 8(15) and the loader object info
567 at 12(15), loads the loader address in R1 and jumps to it. */
568
569/* The first entry in the PLT:
570
571 PLT0:
572 STG 1,56(15) # r1 contains the offset into the symbol table
573 LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
574 MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
575 LG 1,16(1) # get entry address of loader
576 BCR 15,1 # jump to loader
577
578 Fixup at offset 8: relative address to start of GOT. */
579
dc810e39
AM		 580#define PLT_FIRST_ENTRY_WORD0 (bfd_vma) 0xe310f038
581#define PLT_FIRST_ENTRY_WORD1 (bfd_vma) 0x0024c010
582#define PLT_FIRST_ENTRY_WORD2 (bfd_vma) 0x00000000
583#define PLT_FIRST_ENTRY_WORD3 (bfd_vma) 0xd207f030
584#define PLT_FIRST_ENTRY_WORD4 (bfd_vma) 0x1008e310
585#define PLT_FIRST_ENTRY_WORD5 (bfd_vma) 0x10100004
586#define PLT_FIRST_ENTRY_WORD6 (bfd_vma) 0x07f10700
587#define PLT_FIRST_ENTRY_WORD7 (bfd_vma) 0x07000700
a85d7ed0
NC		 588
589/* The s390 linker needs to keep track of the number of relocs that it
0451c93c
MS		 590 decides to copy as dynamic relocs in check_relocs for each symbol.
591 This is so that it can later discard them if they are found to be
592 unnecessary. We store the information in a field extending the
593 regular ELF linker hash table. */
a85d7ed0 594
0451c93c 595struct elf_s390_dyn_relocs
a85d7ed0 596{
0451c93c
MS		 597 struct elf_s390_dyn_relocs *next;
598
599 /* The input section of the reloc. */
600 asection *sec;
601
602 /* Total number of relocs copied for the input section. */
a85d7ed0 603 bfd_size_type count;
0451c93c
MS		 604
605 /* Number of pc-relative relocs copied for the input section. */
606 bfd_size_type pc_count;
a85d7ed0
NC		 607};
608
609/* s390 ELF linker hash entry. */
610
611struct elf_s390_link_hash_entry
612{
0451c93c 613 struct elf_link_hash_entry elf;
a85d7ed0 614
0451c93c
MS		 615 /* Track dynamic relocs copied for this symbol. */
616 struct elf_s390_dyn_relocs *dyn_relocs;
5236c819
MS		 617
618 /* Number of GOTPLT references for a function. */
619 bfd_signed_vma gotplt_refcount;
69fc87f1
MS		 620
621#define GOT_UNKNOWN 0
622#define GOT_NORMAL 1
623#define GOT_TLS_GD 2
624#define GOT_TLS_IE 3
625#define GOT_TLS_IE_NLT 3
626 unsigned char tls_type;
a85d7ed0
NC		 627};
628
69fc87f1
MS		 629#define elf_s390_hash_entry(ent) \
630 ((struct elf_s390_link_hash_entry *)(ent))
631
0ffa91dd
NC		 632/* NOTE: Keep this structure in sync with
633 the one declared in elf32-s390.c. */
69fc87f1
MS		 634struct elf_s390_obj_tdata
635{
636 struct elf_obj_tdata root;
637
0ffa91dd 638 /* TLS type for each local got entry. */
69fc87f1
MS		 639 char *local_got_tls_type;
640};
641
642#define elf_s390_tdata(abfd) \
643 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
644
645#define elf_s390_local_got_tls_type(abfd) \
646 (elf_s390_tdata (abfd)->local_got_tls_type)
647
0ffa91dd
NC		 648#define is_s390_elf(bfd) \
649 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
650 && elf_tdata (bfd) != NULL \
651 && elf_object_id (bfd) == S390_ELF_TDATA)
652
69fc87f1 653static bfd_boolean
62d7a5f6 654elf_s390_mkobject (bfd *abfd)
69fc87f1 655{
0ffa91dd
NC		 656 return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
657 S390_ELF_TDATA);
69fc87f1
MS		 658}
659
660static bfd_boolean
661elf_s390_object_p (abfd)
662 bfd *abfd;
663{
69fc87f1
MS		 664 /* Set the right machine number for an s390 elf32 file. */
665 return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
666}
667
a85d7ed0
NC		 668/* s390 ELF linker hash table. */
669
670struct elf_s390_link_hash_table
671{
0451c93c 672 struct elf_link_hash_table elf;
a85d7ed0 673
0451c93c
MS		 674 /* Short-cuts to get to dynamic linker sections. */
675 asection *sgot;
676 asection *sgotplt;
677 asection *srelgot;
678 asection *splt;
679 asection *srelplt;
680 asection *sdynbss;
681 asection *srelbss;
ec338859 682
69fc87f1
MS		 683 union {
684 bfd_signed_vma refcount;
685 bfd_vma offset;
686 } tls_ldm_got;
687
ec338859
AM		 688 /* Small local sym to section mapping cache. */
689 struct sym_sec_cache sym_sec;
0451c93c 690};
a85d7ed0
NC		 691
692/* Get the s390 ELF linker hash table from a link_info structure. */
693
694#define elf_s390_hash_table(p) \
695 ((struct elf_s390_link_hash_table *) ((p)->hash))
696
697/* Create an entry in an s390 ELF linker hash table. */
698
699static struct bfd_hash_entry *
0451c93c 700link_hash_newfunc (entry, table, string)
a85d7ed0
NC		 701 struct bfd_hash_entry *entry;
702 struct bfd_hash_table *table;
703 const char *string;
704{
a85d7ed0
NC		 705 /* Allocate the structure if it has not already been allocated by a
706 subclass. */
0451c93c
MS		 707 if (entry == NULL)
708 {
709 entry = bfd_hash_allocate (table,
710 sizeof (struct elf_s390_link_hash_entry));
711 if (entry == NULL)
712 return entry;
713 }
a85d7ed0
NC		 714
715 /* Call the allocation method of the superclass. */
0451c93c
MS		 716 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
717 if (entry != NULL)
a85d7ed0 718 {
0451c93c
MS		 719 struct elf_s390_link_hash_entry *eh;
720
721 eh = (struct elf_s390_link_hash_entry *) entry;
722 eh->dyn_relocs = NULL;
5236c819 723 eh->gotplt_refcount = 0;
69fc87f1 724 eh->tls_type = GOT_UNKNOWN;
a85d7ed0
NC		 725 }
726
0451c93c 727 return entry;
a85d7ed0
NC		 728}
729
730/* Create an s390 ELF linker hash table. */
731
732static struct bfd_link_hash_table *
733elf_s390_link_hash_table_create (abfd)
734 bfd *abfd;
735{
736 struct elf_s390_link_hash_table *ret;
dc810e39 737 bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
a85d7ed0 738
e2d34d7d 739 ret = (struct elf_s390_link_hash_table *) bfd_malloc (amt);
0451c93c 740 if (ret == NULL)
a85d7ed0
NC		 741 return NULL;
742
66eb6687
AM		 743 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
744 sizeof (struct elf_s390_link_hash_entry)))
a85d7ed0 745 {
e2d34d7d 746 free (ret);
a85d7ed0
NC		 747 return NULL;
748 }
749
0451c93c
MS		 750 ret->sgot = NULL;
751 ret->sgotplt = NULL;
752 ret->srelgot = NULL;
753 ret->splt = NULL;
754 ret->srelplt = NULL;
755 ret->sdynbss = NULL;
756 ret->srelbss = NULL;
69fc87f1 757 ret->tls_ldm_got.refcount = 0;
ec338859 758 ret->sym_sec.abfd = NULL;
0451c93c
MS		 759
760 return &ret->elf.root;
761}
762
763/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
764 shortcuts to them in our hash table. */
765
b34976b6 766static bfd_boolean
0451c93c
MS		 767create_got_section (dynobj, info)
768 bfd *dynobj;
769 struct bfd_link_info *info;
770{
771 struct elf_s390_link_hash_table *htab;
772
773 if (! _bfd_elf_create_got_section (dynobj, info))
b34976b6 774 return FALSE;
0451c93c
MS		 775
776 htab = elf_s390_hash_table (info);
777 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
778 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
779 if (!htab->sgot || !htab->sgotplt)
780 abort ();
781
3496cb2a
L		 782 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
783 (SEC_ALLOC | SEC_LOAD
784 | SEC_HAS_CONTENTS
785 | SEC_IN_MEMORY
786 | SEC_LINKER_CREATED
787 | SEC_READONLY));
0451c93c 788 if (htab->srelgot == NULL
99881371 789 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3))
b34976b6
AM		 790 return FALSE;
791 return TRUE;
0451c93c
MS		 792}
793
794/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
795 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
796 hash table. */
797
b34976b6 798static bfd_boolean
0451c93c
MS		 799elf_s390_create_dynamic_sections (dynobj, info)
800 bfd *dynobj;
801 struct bfd_link_info *info;
802{
803 struct elf_s390_link_hash_table *htab;
804
805 htab = elf_s390_hash_table (info);
806 if (!htab->sgot && !create_got_section (dynobj, info))
b34976b6 807 return FALSE;
0451c93c
MS		 808
809 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 810 return FALSE;
0451c93c
MS		 811
812 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
813 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
814 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
815 if (!info->shared)
816 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
817
818 if (!htab->splt || !htab->srelplt || !htab->sdynbss
819 || (!info->shared && !htab->srelbss))
820 abort ();
821
b34976b6 822 return TRUE;
a85d7ed0
NC		 823}
824
0451c93c
MS		 825/* Copy the extra info we tack onto an elf_link_hash_entry. */
826
827static void
fcfa13d2
AM		 828elf_s390_copy_indirect_symbol (info, dir, ind)
829 struct bfd_link_info *info;
0451c93c
MS		 830 struct elf_link_hash_entry *dir, *ind;
831{
832 struct elf_s390_link_hash_entry *edir, *eind;
833
834 edir = (struct elf_s390_link_hash_entry *) dir;
835 eind = (struct elf_s390_link_hash_entry *) ind;
836
837 if (eind->dyn_relocs != NULL)
838 {
839 if (edir->dyn_relocs != NULL)
840 {
841 struct elf_s390_dyn_relocs **pp;
842 struct elf_s390_dyn_relocs *p;
843
fcfa13d2 844 /* Add reloc counts against the indirect sym to the direct sym
0451c93c
MS		 845 list. Merge any entries against the same section. */
846 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
847 {
848 struct elf_s390_dyn_relocs *q;
849
850 for (q = edir->dyn_relocs; q != NULL; q = q->next)
851 if (q->sec == p->sec)
852 {
853 q->pc_count += p->pc_count;
854 q->count += p->count;
855 *pp = p->next;
856 break;
857 }
858 if (q == NULL)
859 pp = &p->next;
860 }
861 *pp = edir->dyn_relocs;
862 }
863
864 edir->dyn_relocs = eind->dyn_relocs;
865 eind->dyn_relocs = NULL;
866 }
867
69fc87f1
MS		 868 if (ind->root.type == bfd_link_hash_indirect
869 && dir->got.refcount <= 0)
870 {
871 edir->tls_type = eind->tls_type;
872 eind->tls_type = GOT_UNKNOWN;
873 }
874
64285810
MS		 875 if (ELIMINATE_COPY_RELOCS
876 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 877 && dir->dynamic_adjusted)
878 {
879 /* If called to transfer flags for a weakdef during processing
880 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
881 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
882 dir->ref_dynamic |= ind->ref_dynamic;
883 dir->ref_regular |= ind->ref_regular;
884 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
885 dir->needs_plt |= ind->needs_plt;
886 }
64285810 887 else
fcfa13d2 888 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 889}
a85d7ed0 890
69fc87f1
MS		 891static int
892elf_s390_tls_transition (info, r_type, is_local)
893 struct bfd_link_info *info;
894 int r_type;
895 int is_local;
896{
897 if (info->shared)
898 return r_type;
899
900 switch (r_type)
901 {
902 case R_390_TLS_GD64:
903 case R_390_TLS_IE64:
904 if (is_local)
905 return R_390_TLS_LE64;
906 return R_390_TLS_IE64;
907 case R_390_TLS_GOTIE64:
908 if (is_local)
909 return R_390_TLS_LE64;
910 return R_390_TLS_GOTIE64;
911 case R_390_TLS_LDM64:
912 return R_390_TLS_LE64;
913 }
914
915 return r_type;
916}
917
a85d7ed0
NC		 918/* Look through the relocs for a section during the first phase, and
919 allocate space in the global offset table or procedure linkage
920 table. */
921
b34976b6 922static bfd_boolean
a85d7ed0
NC		 923elf_s390_check_relocs (abfd, info, sec, relocs)
924 bfd *abfd;
925 struct bfd_link_info *info;
926 asection *sec;
927 const Elf_Internal_Rela *relocs;
928{
0451c93c 929 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 930 Elf_Internal_Shdr *symtab_hdr;
931 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 932 const Elf_Internal_Rela *rel;
933 const Elf_Internal_Rela *rel_end;
a85d7ed0 934 asection *sreloc;
5236c819 935 bfd_signed_vma *local_got_refcounts;
69fc87f1 936 int tls_type, old_tls_type;
a85d7ed0 937
1049f94e 938 if (info->relocatable)
b34976b6 939 return TRUE;
a85d7ed0 940
0ffa91dd
NC		 941 BFD_ASSERT (is_s390_elf (abfd));
942
0451c93c 943 htab = elf_s390_hash_table (info);
0ffa91dd 944 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 945 sym_hashes = elf_sym_hashes (abfd);
5236c819 946 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 947
a85d7ed0
NC		 948 sreloc = NULL;
949
950 rel_end = relocs + sec->reloc_count;
951 for (rel = relocs; rel < rel_end; rel++)
952 {
69fc87f1 953 unsigned int r_type;
a85d7ed0
NC		 954 unsigned long r_symndx;
955 struct elf_link_hash_entry *h;
956
957 r_symndx = ELF64_R_SYM (rel->r_info);
958
0451c93c
MS		 959 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
960 {
d003868e
AM		 961 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
962 abfd,
0451c93c 963 r_symndx);
b34976b6 964 return FALSE;
0451c93c
MS		 965 }
966
a85d7ed0
NC		 967 if (r_symndx < symtab_hdr->sh_info)
968 h = NULL;
969 else
973a3492
L		 970 {
971 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
972 while (h->root.type == bfd_link_hash_indirect
973 || h->root.type == bfd_link_hash_warning)
974 h = (struct elf_link_hash_entry *) h->root.u.i.link;
975 }
a85d7ed0 976
5236c819
MS		 977 /* Create got section and local_got_refcounts array if they
978 are needed. */
69fc87f1
MS		 979 r_type = elf_s390_tls_transition (info,
980 ELF64_R_TYPE (rel->r_info),
981 h == NULL);
982 switch (r_type)
a85d7ed0
NC		 983 {
984 case R_390_GOT12:
947216bf 985 case R_390_GOT16:
bd1ea41b 986 case R_390_GOT20:
a85d7ed0
NC		 987 case R_390_GOT32:
988 case R_390_GOT64:
989 case R_390_GOTENT:
5236c819
MS		 990 case R_390_GOTPLT12:
991 case R_390_GOTPLT16:
bd1ea41b 992 case R_390_GOTPLT20:
5236c819
MS		 993 case R_390_GOTPLT32:
994 case R_390_GOTPLT64:
995 case R_390_GOTPLTENT:
69fc87f1
MS		 996 case R_390_TLS_GD64:
997 case R_390_TLS_GOTIE12:
bd1ea41b 998 case R_390_TLS_GOTIE20:
69fc87f1
MS		 999 case R_390_TLS_GOTIE64:
1000 case R_390_TLS_IEENT:
1001 case R_390_TLS_IE64:
1002 case R_390_TLS_LDM64:
5236c819
MS		 1003 if (h == NULL
1004 && local_got_refcounts == NULL)
a85d7ed0 1005 {
5236c819 1006 bfd_size_type size;
0451c93c 1007
5236c819 1008 size = symtab_hdr->sh_info;
69fc87f1 1009 size *= (sizeof (bfd_signed_vma) + sizeof(char));
5236c819
MS		 1010 local_got_refcounts = ((bfd_signed_vma *)
1011 bfd_zalloc (abfd, size));
a85d7ed0 1012 if (local_got_refcounts == NULL)
5236c819
MS		 1013 return FALSE;
1014 elf_local_got_refcounts (abfd) = local_got_refcounts;
69fc87f1
MS		 1015 elf_s390_local_got_tls_type (abfd)
1016 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
a85d7ed0 1017 }
5236c819
MS		 1018 /* Fall through. */
1019 case R_390_GOTOFF16:
1020 case R_390_GOTOFF32:
1021 case R_390_GOTOFF64:
0451c93c
MS		 1022 case R_390_GOTPC:
1023 case R_390_GOTPCDBL:
1024 if (htab->sgot == NULL)
1025 {
1026 if (htab->elf.dynobj == NULL)
1027 htab->elf.dynobj = abfd;
1028 if (!create_got_section (htab->elf.dynobj, info))
b34976b6 1029 return FALSE;
0451c93c 1030 }
5236c819
MS		 1031 }
1032
69fc87f1 1033 switch (r_type)
5236c819 1034 {
5236c819
MS		 1035 case R_390_GOTOFF16:
1036 case R_390_GOTOFF32:
1037 case R_390_GOTOFF64:
1038 case R_390_GOTPC:
1039 case R_390_GOTPCDBL:
1040 /* Got is created, nothing to be done. */
0451c93c 1041 break;
ec338859 1042
947216bf 1043 case R_390_PLT16DBL:
a85d7ed0
NC		 1044 case R_390_PLT32:
1045 case R_390_PLT32DBL:
1046 case R_390_PLT64:
5236c819
MS		 1047 case R_390_PLTOFF16:
1048 case R_390_PLTOFF32:
1049 case R_390_PLTOFF64:
a85d7ed0 1050 /* This symbol requires a procedure linkage table entry. We
947216bf
AM		 1051 actually build the entry in adjust_dynamic_symbol,
1052 because this might be a case of linking PIC code which is
1053 never referenced by a dynamic object, in which case we
1054 don't need to generate a procedure linkage table entry
1055 after all. */
ec338859 1056
a85d7ed0 1057 /* If this is a local symbol, we resolve it directly without
947216bf 1058 creating a procedure linkage table entry. */
5236c819
MS		 1059 if (h != NULL)
1060 {
f5385ebf 1061 h->needs_plt = 1;
5236c819
MS		 1062 h->plt.refcount += 1;
1063 }
1064 break;
ec338859 1065
5236c819
MS		 1066 case R_390_GOTPLT12:
1067 case R_390_GOTPLT16:
bd1ea41b 1068 case R_390_GOTPLT20:
5236c819
MS		 1069 case R_390_GOTPLT32:
1070 case R_390_GOTPLT64:
1071 case R_390_GOTPLTENT:
1072 /* This symbol requires either a procedure linkage table entry
1073 or an entry in the local got. We actually build the entry
1074 in adjust_dynamic_symbol because whether this is really a
1075 global reference can change and with it the fact if we have
1076 to create a plt entry or a local got entry. To be able to
1077 make a once global symbol a local one we have to keep track
1078 of the number of gotplt references that exist for this
1079 symbol. */
1080 if (h != NULL)
1081 {
1082 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1083 h->needs_plt = 1;
5236c819
MS		 1084 h->plt.refcount += 1;
1085 }
69fc87f1
MS		 1086 else
1087 local_got_refcounts[r_symndx] += 1;
1088 break;
1089
1090 case R_390_TLS_LDM64:
1091 htab->tls_ldm_got.refcount += 1;
1092 break;
1093
1094 case R_390_TLS_IE64:
1095 case R_390_TLS_GOTIE12:
bd1ea41b 1096 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1097 case R_390_TLS_GOTIE64:
1098 case R_390_TLS_IEENT:
1099 if (info->shared)
1100 info->flags |= DF_STATIC_TLS;
1101 /* Fall through */
1102
1103 case R_390_GOT12:
26e41594 1104 case R_390_GOT16:
bd1ea41b 1105 case R_390_GOT20:
69fc87f1
MS		 1106 case R_390_GOT32:
1107 case R_390_GOT64:
1108 case R_390_GOTENT:
1109 case R_390_TLS_GD64:
1110 /* This symbol requires a global offset table entry. */
1111 switch (r_type)
1112 {
1113 default:
1114 case R_390_GOT12:
1115 case R_390_GOT16:
bd1ea41b 1116 case R_390_GOT20:
69fc87f1
MS		 1117 case R_390_GOT32:
1118 case R_390_GOTENT:
1119 tls_type = GOT_NORMAL;
1120 break;
1121 case R_390_TLS_GD64:
1122 tls_type = GOT_TLS_GD;
1123 break;
1124 case R_390_TLS_IE64:
1125 case R_390_TLS_GOTIE64:
1126 tls_type = GOT_TLS_IE;
1127 break;
1128 case R_390_TLS_GOTIE12:
bd1ea41b 1129 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1130 case R_390_TLS_IEENT:
1131 tls_type = GOT_TLS_IE_NLT;
1132 break;
1133 }
1134
1135 if (h != NULL)
1136 {
1137 h->got.refcount += 1;
1138 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1139 }
5236c819
MS		 1140 else
1141 {
1142 local_got_refcounts[r_symndx] += 1;
69fc87f1 1143 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
5236c819 1144 }
69fc87f1
MS		 1145 /* If a TLS symbol is accessed using IE at least once,
1146 there is no point to use dynamic model for it. */
1147 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1148 {
1149 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1150 {
1151 (*_bfd_error_handler)
d003868e
AM		 1152 (_("%B: `%s' accessed both as normal and thread local symbol"),
1153 abfd, h->root.root.string);
69fc87f1
MS		 1154 return FALSE;
1155 }
1156 if (old_tls_type > tls_type)
1157 tls_type = old_tls_type;
1158 }
1159
1160 if (old_tls_type != tls_type)
1161 {
1162 if (h != NULL)
1163 elf_s390_hash_entry (h)->tls_type = tls_type;
1164 else
1165 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1166 }
1167
1168 if (r_type != R_390_TLS_IE64)
1169 break;
1170 /* Fall through */
1171
1172 case R_390_TLS_LE64:
1173 if (!info->shared)
1174 break;
1175 info->flags |= DF_STATIC_TLS;
1176 /* Fall through */
ec338859 1177
947216bf
AM		 1178 case R_390_8:
1179 case R_390_16:
a85d7ed0
NC		 1180 case R_390_32:
1181 case R_390_64:
947216bf
AM		 1182 case R_390_PC16:
1183 case R_390_PC16DBL:
a85d7ed0
NC		 1184 case R_390_PC32:
1185 case R_390_PC32DBL:
1186 case R_390_PC64:
0451c93c
MS		 1187 if (h != NULL && !info->shared)
1188 {
1189 /* If this reloc is in a read-only section, we might
1190 need a copy reloc. We can't check reliably at this
1191 stage whether the section is read-only, as input
1192 sections have not yet been mapped to output sections.
1193 Tentatively set the flag for now, and correct in
1194 adjust_dynamic_symbol. */
f5385ebf 1195 h->non_got_ref = 1;
ec338859 1196
0451c93c
MS		 1197 /* We may need a .plt entry if the function this reloc
1198 refers to is in a shared lib. */
1199 h->plt.refcount += 1;
1200 }
ec338859 1201
a85d7ed0 1202 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1203 against a global symbol, or a non PC relative reloc
1204 against a local symbol, then we need to copy the reloc
1205 into the shared library. However, if we are linking with
1206 -Bsymbolic, we do not need to copy a reloc against a
1207 global symbol which is defined in an object we are
1208 including in the link (i.e., DEF_REGULAR is set). At
1209 this point we have not seen all the input files, so it is
1210 possible that DEF_REGULAR is not set now but will be set
1211 later (it is never cleared). In case of a weak definition,
1212 DEF_REGULAR may be cleared later by a strong definition in
1213 a shared library. We account for that possibility below by
1214 storing information in the relocs_copied field of the hash
1215 table entry. A similar situation occurs when creating
1216 shared libraries and symbol visibility changes render the
1217 symbol local.
1218
1219 If on the other hand, we are creating an executable, we
1220 may need to keep relocations for symbols satisfied by a
1221 dynamic library if we manage to avoid copy relocs for the
1222 symbol. */
1223 if ((info->shared
1224 && (sec->flags & SEC_ALLOC) != 0
1225 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
1226 && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
1227 && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1228 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1229 && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1230 || (h != NULL
1231 && (! info->symbolic
1232 || h->root.type == bfd_link_hash_defweak
f5385ebf 1233 || !h->def_regular))))
64285810
MS		 1234 || (ELIMINATE_COPY_RELOCS
1235 && !info->shared
0451c93c
MS		 1236 && (sec->flags & SEC_ALLOC) != 0
1237 && h != NULL
1238 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1239 || !h->def_regular)))
a85d7ed0 1240 {
ec338859
AM		 1241 struct elf_s390_dyn_relocs *p;
1242 struct elf_s390_dyn_relocs **head;
1243
0451c93c
MS		 1244 /* We must copy these reloc types into the output file.
1245 Create a reloc section in dynobj and make room for
1246 this reloc. */
a85d7ed0
NC		 1247 if (sreloc == NULL)
1248 {
0451c93c
MS		 1249 if (htab->elf.dynobj == NULL)
1250 htab->elf.dynobj = abfd;
a85d7ed0 1251
6f581415 1252 sreloc = _bfd_elf_make_dynamic_reloc_section
1253 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
1254
a85d7ed0 1255 if (sreloc == NULL)
6f581415 1256 return FALSE;
a85d7ed0 1257 }
ec338859 1258
0451c93c
MS		 1259 /* If this is a global symbol, we count the number of
1260 relocations we need for this symbol. */
1261 if (h != NULL)
a85d7ed0 1262 {
ec338859 1263 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS		 1264 }
1265 else
1266 {
ec338859
AM		 1267 /* Track dynamic relocs needed for local syms too.
1268 We really need local syms available to do this
1269 easily. Oh well. */
1270
1271 asection *s;
6edfbbad
DJ		 1272 void *vpp;
1273
ec338859
AM		 1274 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1275 sec, r_symndx);
1276 if (s == NULL)
b34976b6 1277 return FALSE;
ec338859 1278
6edfbbad
DJ		 1279 vpp = &elf_section_data (s)->local_dynrel;
1280 head = (struct elf_s390_dyn_relocs **) vpp;
ec338859
AM		 1281 }
1282
1283 p = *head;
1284 if (p == NULL || p->sec != sec)
1285 {
1286 bfd_size_type amt = sizeof *p;
1287 p = ((struct elf_s390_dyn_relocs *)
1288 bfd_alloc (htab->elf.dynobj, amt));
1289 if (p == NULL)
b34976b6 1290 return FALSE;
ec338859
AM		 1291 p->next = *head;
1292 *head = p;
1293 p->sec = sec;
1294 p->count = 0;
1295 p->pc_count = 0;
a85d7ed0 1296 }
ec338859
AM		 1297
1298 p->count += 1;
1299 if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
1300 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1301 || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1302 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1303 || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1304 p->pc_count += 1;
a85d7ed0 1305 }
a85d7ed0 1306 break;
ec338859 1307
a85d7ed0
NC		 1308 /* This relocation describes the C++ object vtable hierarchy.
1309 Reconstruct it for later use during GC. */
947216bf 1310 case R_390_GNU_VTINHERIT:
c152c796 1311 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 1312 return FALSE;
947216bf 1313 break;
ec338859 1314
a85d7ed0
NC		 1315 /* This relocation describes which C++ vtable entries are actually
1316 used. Record for later use during GC. */
947216bf 1317 case R_390_GNU_VTENTRY:
d17e0c6e
JB		 1318 BFD_ASSERT (h != NULL);
1319 if (h != NULL
1320 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 1321 return FALSE;
947216bf 1322 break;
ec338859 1323
a85d7ed0
NC		 1324 default:
1325 break;
1326 }
1327 }
1328
b34976b6 1329 return TRUE;
a85d7ed0
NC		 1330}
1331
1332/* Return the section that should be marked against GC for a given
1333 relocation. */
1334
1335static asection *
07adf181
AM		 1336elf_s390_gc_mark_hook (asection *sec,
1337 struct bfd_link_info *info,
1338 Elf_Internal_Rela *rel,
1339 struct elf_link_hash_entry *h,
1340 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1341{
1342 if (h != NULL)
07adf181
AM		 1343 switch (ELF64_R_TYPE (rel->r_info))
1344 {
1345 case R_390_GNU_VTINHERIT:
1346 case R_390_GNU_VTENTRY:
1347 return NULL;
1348 }
1349
1350 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0
NC		 1351}
1352
1353/* Update the got entry reference counts for the section being removed. */
1354
b34976b6 1355static bfd_boolean
07adf181
AM		 1356elf_s390_gc_sweep_hook (bfd *abfd,
1357 struct bfd_link_info *info,
1358 asection *sec,
1359 const Elf_Internal_Rela *relocs)
a85d7ed0
NC		 1360{
1361 Elf_Internal_Shdr *symtab_hdr;
1362 struct elf_link_hash_entry **sym_hashes;
1363 bfd_signed_vma *local_got_refcounts;
1364 const Elf_Internal_Rela *rel, *relend;
a85d7ed0 1365
7dda2462
TG		 1366 if (info->relocatable)
1367 return TRUE;
1368
ec338859 1369 elf_section_data (sec)->local_dynrel = NULL;
a85d7ed0 1370
0ffa91dd 1371 symtab_hdr = &elf_symtab_hdr (abfd);
0451c93c
MS		 1372 sym_hashes = elf_sym_hashes (abfd);
1373 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0
NC		 1374
1375 relend = relocs + sec->reloc_count;
1376 for (rel = relocs; rel < relend; rel++)
5236c819 1377 {
26e41594
AM		 1378 unsigned long r_symndx;
1379 unsigned int r_type;
1380 struct elf_link_hash_entry *h = NULL;
1381
5236c819 1382 r_symndx = ELF64_R_SYM (rel->r_info);
26e41594
AM		 1383 if (r_symndx >= symtab_hdr->sh_info)
1384 {
1385 struct elf_s390_link_hash_entry *eh;
1386 struct elf_s390_dyn_relocs **pp;
1387 struct elf_s390_dyn_relocs *p;
5236c819 1388
26e41594 1389 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1390 while (h->root.type == bfd_link_hash_indirect
1391 || h->root.type == bfd_link_hash_warning)
1392 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1393 eh = (struct elf_s390_link_hash_entry *) h;
5236c819 1394
26e41594
AM		 1395 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1396 if (p->sec == sec)
1397 {
1398 /* Everything must go for SEC. */
1399 *pp = p->next;
1400 break;
1401 }
1402 }
1403
1404 r_type = ELF64_R_TYPE (rel->r_info);
1405 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
69fc87f1 1406 switch (r_type)
5236c819 1407 {
69fc87f1
MS		 1408 case R_390_TLS_LDM64:
1409 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1410 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1411 break;
1412
1413 case R_390_TLS_GD64:
1414 case R_390_TLS_IE64:
1415 case R_390_TLS_GOTIE12:
bd1ea41b 1416 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1417 case R_390_TLS_GOTIE64:
1418 case R_390_TLS_IEENT:
5236c819
MS		 1419 case R_390_GOT12:
1420 case R_390_GOT16:
bd1ea41b 1421 case R_390_GOT20:
5236c819
MS		 1422 case R_390_GOT32:
1423 case R_390_GOT64:
1424 case R_390_GOTOFF16:
1425 case R_390_GOTOFF32:
1426 case R_390_GOTOFF64:
1427 case R_390_GOTPC:
1428 case R_390_GOTPCDBL:
1429 case R_390_GOTENT:
1430 if (h != NULL)
1431 {
1432 if (h->got.refcount > 0)
1433 h->got.refcount -= 1;
1434 }
1435 else if (local_got_refcounts != NULL)
1436 {
1437 if (local_got_refcounts[r_symndx] > 0)
1438 local_got_refcounts[r_symndx] -= 1;
1439 }
26e41594 1440 break;
a85d7ed0 1441
5236c819
MS		 1442 case R_390_8:
1443 case R_390_12:
1444 case R_390_16:
bd1ea41b 1445 case R_390_20:
5236c819
MS		 1446 case R_390_32:
1447 case R_390_64:
1448 case R_390_PC16:
1449 case R_390_PC16DBL:
1450 case R_390_PC32:
1451 case R_390_PC32DBL:
1452 case R_390_PC64:
26e41594
AM		 1453 if (info->shared)
1454 break;
1455 /* Fall through */
a85d7ed0 1456
69fc87f1
MS		 1457 case R_390_PLT16DBL:
1458 case R_390_PLT32:
1459 case R_390_PLT32DBL:
1460 case R_390_PLT64:
1461 case R_390_PLTOFF16:
1462 case R_390_PLTOFF32:
1463 case R_390_PLTOFF64:
1464 if (h != NULL)
1465 {
1466 if (h->plt.refcount > 0)
1467 h->plt.refcount -= 1;
1468 }
1469 break;
1470
1471 case R_390_GOTPLT12:
1472 case R_390_GOTPLT16:
bd1ea41b 1473 case R_390_GOTPLT20:
69fc87f1
MS		 1474 case R_390_GOTPLT32:
1475 case R_390_GOTPLT64:
1476 case R_390_GOTPLTENT:
1477 if (h != NULL)
1478 {
1479 if (h->plt.refcount > 0)
1480 {
1481 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1482 h->plt.refcount -= 1;
1483 }
1484 }
1485 else if (local_got_refcounts != NULL)
1486 {
1487 if (local_got_refcounts[r_symndx] > 0)
1488 local_got_refcounts[r_symndx] -= 1;
1489 }
1490 break;
1491
5236c819
MS		 1492 default:
1493 break;
1494 }
1495 }
a85d7ed0 1496
b34976b6 1497 return TRUE;
a85d7ed0
NC		 1498}
1499
5236c819
MS		 1500/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1501 entry but we found we will not create any. Called when we find we will
1502 not have any PLT for this symbol, by for example
1503 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1504 or elf_s390_size_dynamic_sections if no dynamic sections will be
1505 created (we're only linking static objects). */
1506
1507static void
1508elf_s390_adjust_gotplt (h)
1509 struct elf_s390_link_hash_entry *h;
1510{
1511 if (h->elf.root.type == bfd_link_hash_warning)
1512 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1513
1514 if (h->gotplt_refcount <= 0)
1515 return;
1516
1517 /* We simply add the number of gotplt references to the number
1518 * of got references for this symbol. */
1519 h->elf.got.refcount += h->gotplt_refcount;
1520 h->gotplt_refcount = -1;
1521}
1522
a85d7ed0
NC		 1523/* Adjust a symbol defined by a dynamic object and referenced by a
1524 regular object. The current definition is in some section of the
1525 dynamic object, but we're not including those sections. We have to
1526 change the definition to something the rest of the link can
1527 understand. */
1528
b34976b6 1529static bfd_boolean
a85d7ed0
NC		 1530elf_s390_adjust_dynamic_symbol (info, h)
1531 struct bfd_link_info *info;
1532 struct elf_link_hash_entry *h;
1533{
0451c93c 1534 struct elf_s390_link_hash_table *htab;
a85d7ed0 1535 asection *s;
a85d7ed0 1536
a85d7ed0
NC		 1537 /* If this is a function, put it in the procedure linkage table. We
1538 will fill in the contents of the procedure linkage table later
cedb70c5 1539 (although we could actually do it here). */
a85d7ed0 1540 if (h->type == STT_FUNC
f5385ebf 1541 || h->needs_plt)
a85d7ed0 1542 {
0451c93c
MS		 1543 if (h->plt.refcount <= 0
1544 || (! info->shared
f5385ebf
AM		 1545 && !h->def_dynamic
1546 && !h->ref_dynamic
f9cd9119
MS		 1547 && h->root.type != bfd_link_hash_undefweak
1548 && h->root.type != bfd_link_hash_undefined))
a85d7ed0
NC		 1549 {
1550 /* This case can occur if we saw a PLT32 reloc in an input
947216bf
AM		 1551 file, but the symbol was never referred to by a dynamic
1552 object, or if all references were garbage collected. In
0451c93c
MS		 1553 such a case, we don't actually need to build a procedure
1554 linkage table, and we can just do a PC32 reloc instead. */
a85d7ed0 1555 h->plt.offset = (bfd_vma) -1;
f5385ebf 1556 h->needs_plt = 0;
5236c819 1557 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1558 }
1559
b34976b6 1560 return TRUE;
a85d7ed0 1561 }
bbd7ec4a 1562 else
0451c93c
MS		 1563 /* It's possible that we incorrectly decided a .plt reloc was
1564 needed for an R_390_PC32 reloc to a non-function sym in
1565 check_relocs. We can't decide accurately between function and
1566 non-function syms in check-relocs; Objects loaded later in
1567 the link may change h->type. So fix it now. */
bbd7ec4a 1568 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1569
1570 /* If this is a weak symbol, and there is a real definition, the
1571 processor independent code will have arranged for us to see the
1572 real definition first, and we can just use the same value. */
f6e332e6 1573 if (h->u.weakdef != NULL)
a85d7ed0 1574 {
f6e332e6
AM		 1575 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1576 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1577 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1578 h->root.u.def.value = h->u.weakdef->root.u.def.value;
64285810 1579 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1580 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1581 return TRUE;
a85d7ed0
NC		 1582 }
1583
1584 /* This is a reference to a symbol defined by a dynamic object which
1585 is not a function. */
1586
1587 /* If we are creating a shared library, we must presume that the
1588 only references to the symbol are via the global offset table.
1589 For such cases we need not do anything here; the relocations will
1590 be handled correctly by relocate_section. */
1591 if (info->shared)
b34976b6 1592 return TRUE;
a85d7ed0
NC		 1593
1594 /* If there are no references to this symbol that do not use the
1595 GOT, we don't need to generate a copy reloc. */
f5385ebf 1596 if (!h->non_got_ref)
b34976b6 1597 return TRUE;
a85d7ed0 1598
0451c93c
MS		 1599 /* If -z nocopyreloc was given, we won't generate them either. */
1600 if (info->nocopyreloc)
1601 {
f5385ebf 1602 h->non_got_ref = 0;
b34976b6 1603 return TRUE;
0451c93c
MS		 1604 }
1605
64285810 1606 if (ELIMINATE_COPY_RELOCS)
0451c93c 1607 {
64285810
MS		 1608 struct elf_s390_link_hash_entry * eh;
1609 struct elf_s390_dyn_relocs *p;
0451c93c 1610
64285810
MS		 1611 eh = (struct elf_s390_link_hash_entry *) h;
1612 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1613 {
1614 s = p->sec->output_section;
1615 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1616 break;
1617 }
1618
1619 /* If we didn't find any dynamic relocs in read-only sections, then
1620 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1621 if (p == NULL)
1622 {
f5385ebf 1623 h->non_got_ref = 0;
64285810
MS		 1624 return TRUE;
1625 }
0451c93c
MS		 1626 }
1627
909272ee
AM		 1628 if (h->size == 0)
1629 {
1630 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1631 h->root.root.string);
1632 return TRUE;
1633 }
1634
a85d7ed0
NC		 1635 /* We must allocate the symbol in our .dynbss section, which will
1636 become part of the .bss section of the executable. There will be
1637 an entry for this symbol in the .dynsym section. The dynamic
1638 object will contain position independent code, so all references
1639 from the dynamic object to this symbol will go through the global
1640 offset table. The dynamic linker will use the .dynsym entry to
1641 determine the address it must put in the global offset table, so
1642 both the dynamic object and the regular object will refer to the
1643 same memory location for the variable. */
1644
0451c93c 1645 htab = elf_s390_hash_table (info);
a85d7ed0 1646
0451c93c
MS		 1647 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1648 copy the initial value out of the dynamic object and into the
1649 runtime process image. */
a85d7ed0
NC		 1650 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1651 {
eea6121a 1652 htab->srelbss->size += sizeof (Elf64_External_Rela);
f5385ebf 1653 h->needs_copy = 1;
a85d7ed0
NC		 1654 }
1655
0451c93c 1656 s = htab->sdynbss;
a85d7ed0 1657
027297b7 1658 return _bfd_elf_adjust_dynamic_copy (h, s);
a85d7ed0
NC		 1659}
1660
0451c93c
MS		 1661/* Allocate space in .plt, .got and associated reloc sections for
1662 dynamic relocs. */
1663
b34976b6 1664static bfd_boolean
0451c93c
MS		 1665allocate_dynrelocs (h, inf)
1666 struct elf_link_hash_entry *h;
1667 PTR inf;
1668{
1669 struct bfd_link_info *info;
1670 struct elf_s390_link_hash_table *htab;
1671 struct elf_s390_link_hash_entry *eh;
1672 struct elf_s390_dyn_relocs *p;
1673
e92d460e 1674 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1675 return TRUE;
0451c93c 1676
e92d460e 1677 if (h->root.type == bfd_link_hash_warning)
5236c819
MS		 1678 /* When warning symbols are created, they **replace** the "real"
1679 entry in the hash table, thus we never get to see the real
1680 symbol in a hash traversal. So look at it now. */
e92d460e
AM		 1681 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1682
0451c93c
MS		 1683 info = (struct bfd_link_info *) inf;
1684 htab = elf_s390_hash_table (info);
1685
1686 if (htab->elf.dynamic_sections_created
82058a73
MS		 1687 && h->plt.refcount > 0
1688 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1689 || h->root.type != bfd_link_hash_undefweak))
0451c93c
MS		 1690 {
1691 /* Make sure this symbol is output as a dynamic symbol.
1692 Undefined weak syms won't yet be marked as dynamic. */
1693 if (h->dynindx == -1
f5385ebf 1694 && !h->forced_local)
0451c93c 1695 {
c152c796 1696 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1697 return FALSE;
0451c93c
MS		 1698 }
1699
82058a73 1700 if (info->shared
4ec72bde 1701 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c
MS		 1702 {
1703 asection *s = htab->splt;
1704
1705 /* If this is the first .plt entry, make room for the special
1706 first entry. */
eea6121a
AM		 1707 if (s->size == 0)
1708 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1709
eea6121a 1710 h->plt.offset = s->size;
0451c93c
MS		 1711
1712 /* If this symbol is not defined in a regular file, and we are
1713 not generating a shared library, then set the symbol to this
1714 location in the .plt. This is required to make function
1715 pointers compare as equal between the normal executable and
1716 the shared library. */
1717 if (! info->shared
f5385ebf 1718 && !h->def_regular)
0451c93c
MS		 1719 {
1720 h->root.u.def.section = s;
1721 h->root.u.def.value = h->plt.offset;
1722 }
ec338859 1723
0451c93c 1724 /* Make room for this entry. */
eea6121a 1725 s->size += PLT_ENTRY_SIZE;
ec338859 1726
0451c93c
MS		 1727 /* We also need to make an entry in the .got.plt section, which
1728 will be placed in the .got section by the linker script. */
eea6121a 1729 htab->sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1730
1731 /* We also need to make an entry in the .rela.plt section. */
eea6121a 1732 htab->srelplt->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1733 }
1734 else
1735 {
1736 h->plt.offset = (bfd_vma) -1;
f5385ebf 1737 h->needs_plt = 0;
5236c819 1738 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1739 }
1740 }
1741 else
1742 {
1743 h->plt.offset = (bfd_vma) -1;
f5385ebf 1744 h->needs_plt = 0;
5236c819 1745 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1746 }
1747
69fc87f1
MS		 1748 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1749 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1750 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1751 we can save the dynamic TLS relocation. */
1752 if (h->got.refcount > 0
1753 && !info->shared
1754 && h->dynindx == -1
1755 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1756 {
1757 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1758 /* For the GOTIE access without a literal pool entry the offset has
1759 to be stored somewhere. The immediate value in the instruction
1760 is not bit enough so the value is stored in the got. */
1761 {
eea6121a
AM		 1762 h->got.offset = htab->sgot->size;
1763 htab->sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1764 }
1765 else
1766 h->got.offset = (bfd_vma) -1;
1767 }
1768 else if (h->got.refcount > 0)
0451c93c
MS		 1769 {
1770 asection *s;
b34976b6 1771 bfd_boolean dyn;
69fc87f1 1772 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1773
1774 /* Make sure this symbol is output as a dynamic symbol.
1775 Undefined weak syms won't yet be marked as dynamic. */
1776 if (h->dynindx == -1
f5385ebf 1777 && !h->forced_local)
0451c93c 1778 {
c152c796 1779 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1780 return FALSE;
0451c93c
MS		 1781 }
1782
1783 s = htab->sgot;
eea6121a
AM		 1784 h->got.offset = s->size;
1785 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1786 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1787 if (tls_type == GOT_TLS_GD)
eea6121a 1788 s->size += GOT_ENTRY_SIZE;
0451c93c 1789 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1790 /* R_390_TLS_IE64 needs one dynamic relocation,
1791 R_390_TLS_GD64 needs one if local symbol and two if global. */
1792 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1793 || tls_type >= GOT_TLS_IE)
eea6121a 1794 htab->srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1 1795 else if (tls_type == GOT_TLS_GD)
eea6121a 1796 htab->srelgot->size += 2 * sizeof (Elf64_External_Rela);
82058a73
MS		 1797 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1798 || h->root.type != bfd_link_hash_undefweak)
1799 && (info->shared
1800 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
eea6121a 1801 htab->srelgot->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1802 }
1803 else
1804 h->got.offset = (bfd_vma) -1;
1805
1806 eh = (struct elf_s390_link_hash_entry *) h;
1807 if (eh->dyn_relocs == NULL)
b34976b6 1808 return TRUE;
0451c93c
MS		 1809
1810 /* In the shared -Bsymbolic case, discard space allocated for
1811 dynamic pc-relative relocs against symbols which turn out to be
1812 defined in regular objects. For the normal shared case, discard
1813 space for pc-relative relocs that have become local due to symbol
1814 visibility changes. */
1815
1816 if (info->shared)
1817 {
1c3ff0f2 1818 if (SYMBOL_REFERENCES_LOCAL (info, h))
0451c93c
MS		 1819 {
1820 struct elf_s390_dyn_relocs **pp;
1821
1822 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1823 {
1824 p->count -= p->pc_count;
1825 p->pc_count = 0;
1826 if (p->count == 0)
1827 *pp = p->next;
1828 else
1829 pp = &p->next;
1830 }
1831 }
82058a73
MS		 1832
1833 /* Also discard relocs on undefined weak syms with non-default
1834 visibility. */
22d606e9 1835 if (eh->dyn_relocs != NULL
82058a73 1836 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 1837 {
1838 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1839 eh->dyn_relocs = NULL;
1840
1841 /* Make sure undefined weak symbols are output as a dynamic
1842 symbol in PIEs. */
1843 else if (h->dynindx == -1
1844 && !h->forced_local)
1845 {
1846 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1847 return FALSE;
1848 }
1849 }
0451c93c 1850 }
64285810 1851 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1852 {
1853 /* For the non-shared case, discard space for relocs against
1854 symbols which turn out to need copy relocs or are not
1855 dynamic. */
1856
f5385ebf
AM		 1857 if (!h->non_got_ref
1858 && ((h->def_dynamic
1859 && !h->def_regular)
0451c93c
MS		 1860 || (htab->elf.dynamic_sections_created
1861 && (h->root.type == bfd_link_hash_undefweak
1862 || h->root.type == bfd_link_hash_undefined))))
1863 {
1864 /* Make sure this symbol is output as a dynamic symbol.
1865 Undefined weak syms won't yet be marked as dynamic. */
1866 if (h->dynindx == -1
f5385ebf 1867 && !h->forced_local)
0451c93c 1868 {
c152c796 1869 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1870 return FALSE;
0451c93c
MS		 1871 }
1872
1873 /* If that succeeded, we know we'll be keeping all the
1874 relocs. */
1875 if (h->dynindx != -1)
1876 goto keep;
1877 }
1878
1879 eh->dyn_relocs = NULL;
1880
ec338859 1881 keep: ;
0451c93c
MS		 1882 }
1883
1884 /* Finally, allocate space. */
1885 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1886 {
1887 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1888 sreloc->size += p->count * sizeof (Elf64_External_Rela);
0451c93c
MS		 1889 }
1890
b34976b6 1891 return TRUE;
0451c93c
MS		 1892}
1893
1894/* Find any dynamic relocs that apply to read-only sections. */
1895
b34976b6 1896static bfd_boolean
0451c93c
MS		 1897readonly_dynrelocs (h, inf)
1898 struct elf_link_hash_entry *h;
1899 PTR inf;
1900{
1901 struct elf_s390_link_hash_entry *eh;
1902 struct elf_s390_dyn_relocs *p;
1903
e92d460e
AM		 1904 if (h->root.type == bfd_link_hash_warning)
1905 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1906
0451c93c
MS		 1907 eh = (struct elf_s390_link_hash_entry *) h;
1908 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1909 {
1910 asection *s = p->sec->output_section;
1911
1912 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1913 {
1914 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1915
1916 info->flags |= DF_TEXTREL;
1917
1918 /* Not an error, just cut short the traversal. */
b34976b6 1919 return FALSE;
0451c93c
MS		 1920 }
1921 }
b34976b6 1922 return TRUE;
0451c93c
MS		 1923}
1924
a85d7ed0
NC		 1925/* Set the sizes of the dynamic sections. */
1926
b34976b6 1927static bfd_boolean
a85d7ed0 1928elf_s390_size_dynamic_sections (output_bfd, info)
29c2fb7c 1929 bfd *output_bfd ATTRIBUTE_UNUSED;
a85d7ed0
NC		 1930 struct bfd_link_info *info;
1931{
0451c93c 1932 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1933 bfd *dynobj;
1934 asection *s;
b34976b6 1935 bfd_boolean relocs;
0451c93c 1936 bfd *ibfd;
a85d7ed0 1937
0451c93c
MS		 1938 htab = elf_s390_hash_table (info);
1939 dynobj = htab->elf.dynobj;
1940 if (dynobj == NULL)
1941 abort ();
a85d7ed0 1942
0451c93c 1943 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1944 {
1945 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 1946 if (info->executable)
a85d7ed0
NC		 1947 {
1948 s = bfd_get_section_by_name (dynobj, ".interp");
0451c93c
MS		 1949 if (s == NULL)
1950 abort ();
eea6121a 1951 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 1952 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1953 }
1954 }
a85d7ed0 1955
0451c93c
MS		 1956 /* Set up .got offsets for local syms, and space for local dynamic
1957 relocs. */
1958 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
a85d7ed0 1959 {
0451c93c
MS		 1960 bfd_signed_vma *local_got;
1961 bfd_signed_vma *end_local_got;
69fc87f1 1962 char *local_tls_type;
0451c93c
MS		 1963 bfd_size_type locsymcount;
1964 Elf_Internal_Shdr *symtab_hdr;
1965 asection *srela;
a85d7ed0 1966
0ffa91dd 1967 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 1968 continue;
1969
0451c93c 1970 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 1971 {
ec338859 1972 struct elf_s390_dyn_relocs *p;
0451c93c 1973
6edfbbad 1974 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 1975 {
ec338859
AM		 1976 if (!bfd_is_abs_section (p->sec)
1977 && bfd_is_abs_section (p->sec->output_section))
1978 {
1979 /* Input section has been discarded, either because
1980 it is a copy of a linkonce section or due to
1981 linker script /DISCARD/, so we'll be discarding
1982 the relocs too. */
1983 }
248866a8 1984 else if (p->count != 0)
ec338859
AM		 1985 {
1986 srela = elf_section_data (p->sec)->sreloc;
eea6121a 1987 srela->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 1988 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1989 info->flags |= DF_TEXTREL;
ec338859 1990 }
a85d7ed0
NC		 1991 }
1992 }
0451c93c
MS		 1993
1994 local_got = elf_local_got_refcounts (ibfd);
1995 if (!local_got)
1996 continue;
1997
0ffa91dd 1998 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 1999 locsymcount = symtab_hdr->sh_info;
2000 end_local_got = local_got + locsymcount;
69fc87f1 2001 local_tls_type = elf_s390_local_got_tls_type (ibfd);
0451c93c
MS		 2002 s = htab->sgot;
2003 srela = htab->srelgot;
69fc87f1 2004 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 2005 {
0451c93c 2006 if (*local_got > 0)
a85d7ed0 2007 {
eea6121a
AM		 2008 *local_got = s->size;
2009 s->size += GOT_ENTRY_SIZE;
69fc87f1 2010 if (*local_tls_type == GOT_TLS_GD)
eea6121a 2011 s->size += GOT_ENTRY_SIZE;
0451c93c 2012 if (info->shared)
eea6121a 2013 srela->size += sizeof (Elf64_External_Rela);
a85d7ed0
NC		 2014 }
2015 else
0451c93c 2016 *local_got = (bfd_vma) -1;
a85d7ed0 2017 }
0451c93c
MS		 2018 }
2019
69fc87f1
MS		 2020 if (htab->tls_ldm_got.refcount > 0)
2021 {
2022 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
2023 relocs. */
eea6121a
AM		 2024 htab->tls_ldm_got.offset = htab->sgot->size;
2025 htab->sgot->size += 2 * GOT_ENTRY_SIZE;
2026 htab->srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1
MS		 2027 }
2028 else
2029 htab->tls_ldm_got.offset = -1;
2030
0451c93c
MS		 2031 /* Allocate global sym .plt and .got entries, and space for global
2032 sym dynamic relocs. */
2033 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2034
2035 /* We now have determined the sizes of the various dynamic sections.
2036 Allocate memory for them. */
b34976b6 2037 relocs = FALSE;
0451c93c
MS		 2038 for (s = dynobj->sections; s != NULL; s = s->next)
2039 {
2040 if ((s->flags & SEC_LINKER_CREATED) == 0)
2041 continue;
2042
2043 if (s == htab->splt
2044 || s == htab->sgot
c456f082
AM		 2045 || s == htab->sgotplt
2046 || s == htab->sdynbss)
0451c93c
MS		 2047 {
2048 /* Strip this section if we don't need it; see the
2049 comment below. */
2050 }
0112cd26 2051 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 2052 {
eea6121a 2053 if (s->size != 0 && s != htab->srelplt)
b34976b6 2054 relocs = TRUE;
ec338859 2055
0451c93c
MS		 2056 /* We use the reloc_count field as a counter if we need
2057 to copy relocs into the output file. */
2058 s->reloc_count = 0;
2059 }
2060 else
a85d7ed0
NC		 2061 {
2062 /* It's not one of our sections, so don't allocate space. */
2063 continue;
2064 }
2065
eea6121a 2066 if (s->size == 0)
a85d7ed0 2067 {
0451c93c
MS		 2068 /* If we don't need this section, strip it from the
2069 output file. This is to handle .rela.bss and
2070 .rela.plt. We must create it in
2071 create_dynamic_sections, because it must be created
2072 before the linker maps input sections to output
2073 sections. The linker does that before
2074 adjust_dynamic_symbol is called, and it is that
2075 function which decides whether anything needs to go
2076 into these sections. */
2077
8423293d 2078 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 2079 continue;
2080 }
2081
c456f082
AM		 2082 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2083 continue;
2084
0451c93c
MS		 2085 /* Allocate memory for the section contents. We use bfd_zalloc
2086 here in case unused entries are not reclaimed before the
2087 section's contents are written out. This should not happen,
2088 but this way if it does, we get a R_390_NONE reloc instead
2089 of garbage. */
eea6121a 2090 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 2091 if (s->contents == NULL)
b34976b6 2092 return FALSE;
a85d7ed0
NC		 2093 }
2094
0451c93c 2095 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2096 {
2097 /* Add some entries to the .dynamic section. We fill in the
2098 values later, in elf_s390_finish_dynamic_sections, but we
2099 must add the entries now so that we get the correct size for
2100 the .dynamic section. The DT_DEBUG entry is filled in by the
2101 dynamic linker and used by the debugger. */
dc810e39 2102#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2103 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2104
36af4a4e 2105 if (info->executable)
a85d7ed0 2106 {
dc810e39 2107 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2108 return FALSE;
a85d7ed0
NC		 2109 }
2110
eea6121a 2111 if (htab->splt->size != 0)
a85d7ed0 2112 {
dc810e39
AM		 2113 if (!add_dynamic_entry (DT_PLTGOT, 0)
2114 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2115 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2116 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2117 return FALSE;
a85d7ed0
NC		 2118 }
2119
2120 if (relocs)
947216bf
AM		 2121 {
2122 if (!add_dynamic_entry (DT_RELA, 0)
2123 || !add_dynamic_entry (DT_RELASZ, 0)
2124 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 2125 return FALSE;
ec338859 2126
0451c93c
MS		 2127 /* If any dynamic relocs apply to a read-only section,
2128 then we need a DT_TEXTREL entry. */
248866a8
AM		 2129 if ((info->flags & DF_TEXTREL) == 0)
2130 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2131 (PTR) info);
ec338859 2132
0451c93c
MS		 2133 if ((info->flags & DF_TEXTREL) != 0)
2134 {
2135 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2136 return FALSE;
0451c93c 2137 }
a85d7ed0
NC		 2138 }
2139 }
dc810e39 2140#undef add_dynamic_entry
a85d7ed0 2141
b34976b6 2142 return TRUE;
a85d7ed0
NC		 2143}
2144
69fc87f1
MS		 2145/* Return the base VMA address which should be subtracted from real addresses
2146 when resolving @dtpoff relocation.
2147 This is PT_TLS segment p_vaddr. */
2148
2149static bfd_vma
2150dtpoff_base (info)
2151 struct bfd_link_info *info;
2152{
e1918d23
AM		 2153 /* If tls_sec is NULL, we should have signalled an error already. */
2154 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2155 return 0;
e1918d23 2156 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2157}
2158
2159/* Return the relocation value for @tpoff relocation
2160 if STT_TLS virtual address is ADDRESS. */
2161
2162static bfd_vma
2163tpoff (info, address)
2164 struct bfd_link_info *info;
2165 bfd_vma address;
2166{
e1918d23 2167 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2168
e1918d23
AM		 2169 /* If tls_sec is NULL, we should have signalled an error already. */
2170 if (htab->tls_sec == NULL)
69fc87f1 2171 return 0;
e1918d23 2172 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2173}
2174
2175/* Complain if TLS instruction relocation is against an invalid
2176 instruction. */
2177
2178static void
2179invalid_tls_insn (input_bfd, input_section, rel)
2180 bfd *input_bfd;
2181 asection *input_section;
2182 Elf_Internal_Rela *rel;
2183{
2184 reloc_howto_type *howto;
2185
2186 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
2187 (*_bfd_error_handler)
d003868e
AM		 2188 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2189 input_bfd,
2190 input_section,
69fc87f1
MS		 2191 (long) rel->r_offset,
2192 howto->name);
77df2968 2193 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2194}
2195
a85d7ed0
NC		 2196/* Relocate a 390 ELF section. */
2197
b34976b6 2198static bfd_boolean
a85d7ed0
NC		 2199elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
2200 contents, relocs, local_syms, local_sections)
2201 bfd *output_bfd;
2202 struct bfd_link_info *info;
2203 bfd *input_bfd;
2204 asection *input_section;
2205 bfd_byte *contents;
2206 Elf_Internal_Rela *relocs;
2207 Elf_Internal_Sym *local_syms;
2208 asection **local_sections;
2209{
0451c93c 2210 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2211 Elf_Internal_Shdr *symtab_hdr;
2212 struct elf_link_hash_entry **sym_hashes;
2213 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2214 Elf_Internal_Rela *rel;
2215 Elf_Internal_Rela *relend;
2216
0ffa91dd
NC		 2217 BFD_ASSERT (is_s390_elf (input_bfd));
2218
0451c93c 2219 htab = elf_s390_hash_table (info);
0ffa91dd 2220 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2221 sym_hashes = elf_sym_hashes (input_bfd);
2222 local_got_offsets = elf_local_got_offsets (input_bfd);
2223
a85d7ed0
NC		 2224 rel = relocs;
2225 relend = relocs + input_section->reloc_count;
2226 for (; rel < relend; rel++)
2227 {
5236c819 2228 unsigned int r_type;
a85d7ed0
NC		 2229 reloc_howto_type *howto;
2230 unsigned long r_symndx;
2231 struct elf_link_hash_entry *h;
2232 Elf_Internal_Sym *sym;
2233 asection *sec;
0451c93c 2234 bfd_vma off;
a85d7ed0 2235 bfd_vma relocation;
b34976b6 2236 bfd_boolean unresolved_reloc;
a85d7ed0 2237 bfd_reloc_status_type r;
69fc87f1 2238 int tls_type;
a85d7ed0
NC		 2239
2240 r_type = ELF64_R_TYPE (rel->r_info);
0451c93c 2241 if (r_type == (int) R_390_GNU_VTINHERIT
947216bf
AM		 2242 || r_type == (int) R_390_GNU_VTENTRY)
2243 continue;
5236c819 2244 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2245 {
2246 bfd_set_error (bfd_error_bad_value);
b34976b6 2247 return FALSE;
a85d7ed0 2248 }
a85d7ed0 2249
b491616a 2250 howto = elf_howto_table + r_type;
a85d7ed0 2251 r_symndx = ELF64_R_SYM (rel->r_info);
5236c819 2252
a85d7ed0
NC		 2253 h = NULL;
2254 sym = NULL;
2255 sec = NULL;
b34976b6 2256 unresolved_reloc = FALSE;
a85d7ed0
NC		 2257 if (r_symndx < symtab_hdr->sh_info)
2258 {
2259 sym = local_syms + r_symndx;
2260 sec = local_sections[r_symndx];
8517fae7 2261 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2262 }
2263 else
2264 {
560e09e9 2265 bfd_boolean warned ATTRIBUTE_UNUSED;
0451c93c 2266
b2a8e766
AM		 2267 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2268 r_symndx, symtab_hdr, sym_hashes,
2269 h, sec, relocation,
2270 unresolved_reloc, warned);
a85d7ed0
NC		 2271 }
2272
ab96bf03
AM		 2273 if (sec != NULL && elf_discarded_section (sec))
2274 {
2275 /* For relocs against symbols from removed linkonce sections,
2276 or sections discarded by a linker script, we just want the
2277 section contents zeroed. Avoid any special processing. */
2278 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2279 rel->r_info = 0;
2280 rel->r_addend = 0;
2281 continue;
2282 }
2283
2284 if (info->relocatable)
2285 continue;
2286
a85d7ed0
NC		 2287 switch (r_type)
2288 {
5236c819
MS		 2289 case R_390_GOTPLT12:
2290 case R_390_GOTPLT16:
bd1ea41b 2291 case R_390_GOTPLT20:
5236c819
MS		 2292 case R_390_GOTPLT32:
2293 case R_390_GOTPLT64:
2294 case R_390_GOTPLTENT:
2295 /* There are three cases for a GOTPLT relocation. 1) The
2296 relocation is against the jump slot entry of a plt that
2297 will get emitted to the output file. 2) The relocation
2298 is against the jump slot of a plt entry that has been
2299 removed. elf_s390_adjust_gotplt has created a GOT entry
2300 as replacement. 3) The relocation is against a local symbol.
2301 Cases 2) and 3) are the same as the GOT relocation code
2302 so we just have to test for case 1 and fall through for
2303 the other two. */
2304 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2305 {
2306 bfd_vma plt_index;
2307
2308 /* Calc. index no.
2309 Current offset - size first entry / entry size. */
2310 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2311 PLT_ENTRY_SIZE;
26e41594 2312
5236c819
MS		 2313 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
2314 addr & GOT addr. */
2315 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2316 unresolved_reloc = FALSE;
2317
2318 if (r_type == R_390_GOTPLTENT)
26e41594 2319 relocation += htab->sgot->output_section->vma;
5236c819
MS		 2320 break;
2321 }
2322 /* Fall through. */
2323
947216bf
AM		 2324 case R_390_GOT12:
2325 case R_390_GOT16:
bd1ea41b 2326 case R_390_GOT20:
947216bf
AM		 2327 case R_390_GOT32:
2328 case R_390_GOT64:
2329 case R_390_GOTENT:
2330 /* Relocation is to the entry for this symbol in the global
2331 offset table. */
0451c93c
MS		 2332 if (htab->sgot == NULL)
2333 abort ();
a85d7ed0 2334
947216bf
AM		 2335 if (h != NULL)
2336 {
b34976b6 2337 bfd_boolean dyn;
a85d7ed0 2338
947216bf 2339 off = h->got.offset;
0451c93c 2340 dyn = htab->elf.dynamic_sections_created;
4ec72bde 2341 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
947216bf
AM		 2342 || (info->shared
2343 && (info->symbolic
0451c93c 2344 || h->dynindx == -1
f5385ebf
AM		 2345 || h->forced_local)
2346 && h->def_regular)
82058a73
MS		 2347 || (ELF_ST_VISIBILITY (h->other)
2348 && h->root.type == bfd_link_hash_undefweak))
947216bf
AM		 2349 {
2350 /* This is actually a static link, or it is a
2351 -Bsymbolic link and the symbol is defined
2352 locally, or the symbol was forced to be local
2353 because of a version file. We must initialize
2354 this entry in the global offset table. Since the
2355 offset must always be a multiple of 2, we use the
2356 least significant bit to record whether we have
2357 initialized it already.
2358
2359 When doing a dynamic link, we create a .rel.got
2360 relocation entry to initialize the value. This
2361 is done in the finish_dynamic_symbol routine. */
2362 if ((off & 1) != 0)
2363 off &= ~1;
2364 else
2365 {
a85d7ed0 2366 bfd_put_64 (output_bfd, relocation,
0451c93c 2367 htab->sgot->contents + off);
947216bf
AM		 2368 h->got.offset |= 1;
2369 }
2370 }
0451c93c 2371 else
b34976b6 2372 unresolved_reloc = FALSE;
947216bf
AM		 2373 }
2374 else
2375 {
0451c93c
MS		 2376 if (local_got_offsets == NULL)
2377 abort ();
a85d7ed0 2378
947216bf 2379 off = local_got_offsets[r_symndx];
a85d7ed0 2380
947216bf
AM		 2381 /* The offset must always be a multiple of 8. We use
2382 the least significant bit to record whether we have
2383 already generated the necessary reloc. */
2384 if ((off & 1) != 0)
2385 off &= ~1;
2386 else
2387 {
2388 bfd_put_64 (output_bfd, relocation,
0451c93c 2389 htab->sgot->contents + off);
a85d7ed0 2390
947216bf
AM		 2391 if (info->shared)
2392 {
2393 asection *s;
2394 Elf_Internal_Rela outrel;
2395 bfd_byte *loc;
a85d7ed0 2396
947216bf
AM		 2397 s = htab->srelgot;
2398 if (s == NULL)
0451c93c 2399 abort ();
a85d7ed0 2400
947216bf
AM		 2401 outrel.r_offset = (htab->sgot->output_section->vma
2402 + htab->sgot->output_offset
2403 + off);
2404 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2405 outrel.r_addend = relocation;
947216bf
AM		 2406 loc = s->contents;
2407 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2408 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2409 }
a85d7ed0 2410
947216bf
AM		 2411 local_got_offsets[r_symndx] |= 1;
2412 }
2413 }
a85d7ed0 2414
0451c93c
MS		 2415 if (off >= (bfd_vma) -2)
2416 abort ();
2417
2418 relocation = htab->sgot->output_offset + off;
2419
ae9a127f
NC		 2420 /* For @GOTENT the relocation is against the offset between
2421 the instruction and the symbols entry in the GOT and not
2422 between the start of the GOT and the symbols entry. We
2423 add the vma of the GOT to get the correct value. */
5236c819
MS		 2424 if ( r_type == R_390_GOTENT
2425 || r_type == R_390_GOTPLTENT)
0451c93c 2426 relocation += htab->sgot->output_section->vma;
a85d7ed0 2427
947216bf 2428 break;
99c79b2e 2429
5236c819
MS		 2430 case R_390_GOTOFF16:
2431 case R_390_GOTOFF32:
2432 case R_390_GOTOFF64:
947216bf
AM		 2433 /* Relocation is relative to the start of the global offset
2434 table. */
a85d7ed0 2435
947216bf
AM		 2436 /* Note that sgot->output_offset is not involved in this
2437 calculation. We always want the start of .got. If we
2438 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2439 permitted by the ABI, we might have to change this
2440 calculation. */
2441 relocation -= htab->sgot->output_section->vma;
947216bf 2442 break;
a85d7ed0 2443
947216bf 2444 case R_390_GOTPC:
a85d7ed0 2445 case R_390_GOTPCDBL:
947216bf
AM		 2446 /* Use global offset table as symbol value. */
2447 relocation = htab->sgot->output_section->vma;
b34976b6 2448 unresolved_reloc = FALSE;
947216bf 2449 break;
a85d7ed0 2450
947216bf
AM		 2451 case R_390_PLT16DBL:
2452 case R_390_PLT32:
2453 case R_390_PLT32DBL:
2454 case R_390_PLT64:
2455 /* Relocation is to the entry for this symbol in the
2456 procedure linkage table. */
a85d7ed0 2457
947216bf
AM		 2458 /* Resolve a PLT32 reloc against a local symbol directly,
2459 without using the procedure linkage table. */
2460 if (h == NULL)
2461 break;
a85d7ed0 2462
947216bf 2463 if (h->plt.offset == (bfd_vma) -1
0451c93c 2464 || htab->splt == NULL)
947216bf
AM		 2465 {
2466 /* We didn't make a PLT entry for this symbol. This
2467 happens when statically linking PIC code, or when
2468 using -Bsymbolic. */
2469 break;
2470 }
2471
2472 relocation = (htab->splt->output_section->vma
2473 + htab->splt->output_offset
2474 + h->plt.offset);
b34976b6 2475 unresolved_reloc = FALSE;
26e41594 2476 break;
5236c819
MS		 2477
2478 case R_390_PLTOFF16:
2479 case R_390_PLTOFF32:
2480 case R_390_PLTOFF64:
26e41594
AM		 2481 /* Relocation is to the entry for this symbol in the
2482 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2483
2484 /* For local symbols or if we didn't make a PLT entry for
2485 this symbol resolve the symbol directly. */
26e41594 2486 if ( h == NULL
5236c819
MS		 2487 || h->plt.offset == (bfd_vma) -1
2488 || htab->splt == NULL)
2489 {
2490 relocation -= htab->sgot->output_section->vma;
2491 break;
2492 }
2493
26e41594
AM		 2494 relocation = (htab->splt->output_section->vma
2495 + htab->splt->output_offset
2496 + h->plt.offset
5236c819
MS		 2497 - htab->sgot->output_section->vma);
2498 unresolved_reloc = FALSE;
947216bf
AM		 2499 break;
2500
2501 case R_390_8:
2502 case R_390_16:
2503 case R_390_32:
2504 case R_390_64:
2505 case R_390_PC16:
2506 case R_390_PC16DBL:
2507 case R_390_PC32:
a85d7ed0 2508 case R_390_PC32DBL:
947216bf 2509 case R_390_PC64:
b1e24c02 2510 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2511 break;
2512
947216bf 2513 if ((info->shared
82058a73
MS		 2514 && (h == NULL
2515 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2516 || h->root.type != bfd_link_hash_undefweak)
0451c93c
MS		 2517 && ((r_type != R_390_PC16
2518 && r_type != R_390_PC16DBL
2519 && r_type != R_390_PC32
2520 && r_type != R_390_PC32DBL
2521 && r_type != R_390_PC64)
2522 || (h != NULL
1c3ff0f2 2523 && !SYMBOL_REFERENCES_LOCAL (info, h))))
64285810
MS		 2524 || (ELIMINATE_COPY_RELOCS
2525 && !info->shared
0451c93c
MS		 2526 && h != NULL
2527 && h->dynindx != -1
f5385ebf
AM		 2528 && !h->non_got_ref
2529 && ((h->def_dynamic
2530 && !h->def_regular)
0451c93c
MS		 2531 || h->root.type == bfd_link_hash_undefweak
2532 || h->root.type == bfd_link_hash_undefined)))
947216bf
AM		 2533 {
2534 Elf_Internal_Rela outrel;
b34976b6 2535 bfd_boolean skip, relocate;
0451c93c 2536 asection *sreloc;
947216bf 2537 bfd_byte *loc;
a85d7ed0 2538
947216bf
AM		 2539 /* When generating a shared object, these relocations
2540 are copied into the output file to be resolved at run
2541 time. */
b34976b6
AM		 2542 skip = FALSE;
2543 relocate = FALSE;
a85d7ed0 2544
c629eae0
JJ		 2545 outrel.r_offset =
2546 _bfd_elf_section_offset (output_bfd, info, input_section,
2547 rel->r_offset);
2548 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2549 skip = TRUE;
0bb2d96a 2550 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2551 skip = TRUE, relocate = TRUE;
a85d7ed0 2552
947216bf
AM		 2553 outrel.r_offset += (input_section->output_section->vma
2554 + input_section->output_offset);
a85d7ed0 2555
947216bf 2556 if (skip)
0bb2d96a 2557 memset (&outrel, 0, sizeof outrel);
947216bf 2558 else if (h != NULL
0451c93c
MS		 2559 && h->dynindx != -1
2560 && (r_type == R_390_PC16
2561 || r_type == R_390_PC16DBL
2562 || r_type == R_390_PC32
2563 || r_type == R_390_PC32DBL
2564 || r_type == R_390_PC64
2565 || !info->shared
2566 || !info->symbolic
f5385ebf 2567 || !h->def_regular))
947216bf
AM		 2568 {
2569 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
27018c3f 2570 outrel.r_addend = rel->r_addend;
947216bf
AM		 2571 }
2572 else
2573 {
0451c93c 2574 /* This symbol is local, or marked to become local. */
90ced0dd 2575 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2576 if (r_type == R_390_64)
2577 {
2578 relocate = TRUE;
2579 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2580 }
2581 else
2582 {
2583 long sindx;
2584
90ced0dd 2585 if (bfd_is_abs_section (sec))
b5727d75
MS		 2586 sindx = 0;
2587 else if (sec == NULL || sec->owner == NULL)
2588 {
2589 bfd_set_error(bfd_error_bad_value);
2590 return FALSE;
2591 }
2592 else
2593 {
2594 asection *osec;
2595
2596 osec = sec->output_section;
2597 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2598
2599 if (sindx == 0)
2600 {
2601 osec = htab->elf.text_index_section;
2602 sindx = elf_section_data (osec)->dynindx;
2603 }
2604 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2605
2606 /* We are turning this relocation into one
2607 against a section symbol, so subtract out
2608 the output section's address but not the
2609 offset of the input section in the output
2610 section. */
90ced0dd 2611 outrel.r_addend -= osec->vma;
b5727d75
MS		 2612 }
2613 outrel.r_info = ELF64_R_INFO (sindx, r_type);
b5727d75 2614 }
0451c93c 2615 }
a85d7ed0 2616
0451c93c
MS		 2617 sreloc = elf_section_data (input_section)->sreloc;
2618 if (sreloc == NULL)
2619 abort ();
2620
947216bf
AM		 2621 loc = sreloc->contents;
2622 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2623 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
a85d7ed0 2624
947216bf
AM		 2625 /* If this reloc is against an external symbol, we do
2626 not want to fiddle with the addend. Otherwise, we
2627 need to include the symbol value so that it becomes
2628 an addend for the dynamic reloc. */
2629 if (! relocate)
2630 continue;
2631 }
a85d7ed0 2632
947216bf 2633 break;
a85d7ed0 2634
69fc87f1
MS		 2635 /* Relocations for tls literal pool entries. */
2636 case R_390_TLS_IE64:
2637 if (info->shared)
2638 {
2639 Elf_Internal_Rela outrel;
2640 asection *sreloc;
2641 bfd_byte *loc;
2642
2643 outrel.r_offset = rel->r_offset
2644 + input_section->output_section->vma
2645 + input_section->output_offset;
2646 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2647 sreloc = elf_section_data (input_section)->sreloc;
2648 if (sreloc == NULL)
2649 abort ();
2650 loc = sreloc->contents;
2651 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2652 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2653 }
ae9a127f 2654 /* Fall through. */
69fc87f1
MS		 2655
2656 case R_390_TLS_GD64:
2657 case R_390_TLS_GOTIE64:
2658 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2659 tls_type = GOT_UNKNOWN;
2660 if (h == NULL && local_got_offsets)
2661 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2662 else if (h != NULL)
2663 {
2664 tls_type = elf_s390_hash_entry(h)->tls_type;
2665 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2666 r_type = R_390_TLS_LE64;
2667 }
2668 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2669 r_type = R_390_TLS_IE64;
2670
2671 if (r_type == R_390_TLS_LE64)
2672 {
2673 /* This relocation gets optimized away by the local exec
2674 access optimization. */
2675 BFD_ASSERT (! unresolved_reloc);
2676 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2677 contents + rel->r_offset);
2678 continue;
2679 }
2680
2681 if (htab->sgot == NULL)
2682 abort ();
2683
2684 if (h != NULL)
2685 off = h->got.offset;
2686 else
2687 {
2688 if (local_got_offsets == NULL)
2689 abort ();
2690
2691 off = local_got_offsets[r_symndx];
2692 }
2693
2694 emit_tls_relocs:
2695
2696 if ((off & 1) != 0)
2697 off &= ~1;
26e41594 2698 else
69fc87f1
MS		 2699 {
2700 Elf_Internal_Rela outrel;
2701 bfd_byte *loc;
2702 int dr_type, indx;
2703
2704 if (htab->srelgot == NULL)
2705 abort ();
2706
2707 outrel.r_offset = (htab->sgot->output_section->vma
2708 + htab->sgot->output_offset + off);
2709
2710 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2711 if (r_type == R_390_TLS_GD64)
2712 dr_type = R_390_TLS_DTPMOD;
2713 else
2714 dr_type = R_390_TLS_TPOFF;
2715 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2716 outrel.r_addend = relocation - dtpoff_base (info);
2717 else
2718 outrel.r_addend = 0;
2719 outrel.r_info = ELF64_R_INFO (indx, dr_type);
2720 loc = htab->srelgot->contents;
2721 loc += htab->srelgot->reloc_count++
2722 * sizeof (Elf64_External_Rela);
2723 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2724
2725 if (r_type == R_390_TLS_GD64)
2726 {
2727 if (indx == 0)
2728 {
2729 BFD_ASSERT (! unresolved_reloc);
2730 bfd_put_64 (output_bfd,
2731 relocation - dtpoff_base (info),
2732 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2733 }
2734 else
2735 {
2736 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
2737 outrel.r_offset += GOT_ENTRY_SIZE;
2738 outrel.r_addend = 0;
2739 htab->srelgot->reloc_count++;
2740 loc += sizeof (Elf64_External_Rela);
2741 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2742 }
2743 }
2744
2745 if (h != NULL)
2746 h->got.offset |= 1;
2747 else
2748 local_got_offsets[r_symndx] |= 1;
2749 }
2750
2751 if (off >= (bfd_vma) -2)
2752 abort ();
2753 if (r_type == ELF64_R_TYPE (rel->r_info))
2754 {
2755 relocation = htab->sgot->output_offset + off;
2756 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
2757 relocation += htab->sgot->output_section->vma;
2758 unresolved_reloc = FALSE;
2759 }
2760 else
2761 {
2762 bfd_put_64 (output_bfd, htab->sgot->output_offset + off,
2763 contents + rel->r_offset);
2764 continue;
2765 }
2766 break;
2767
2768 case R_390_TLS_GOTIE12:
bd1ea41b 2769 case R_390_TLS_GOTIE20:
69fc87f1
MS		 2770 case R_390_TLS_IEENT:
2771 if (h == NULL)
2772 {
2773 if (local_got_offsets == NULL)
2774 abort();
2775 off = local_got_offsets[r_symndx];
2776 if (info->shared)
2777 goto emit_tls_relocs;
2778 }
2779 else
2780 {
2781 off = h->got.offset;
2782 tls_type = elf_s390_hash_entry(h)->tls_type;
2783 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
2784 goto emit_tls_relocs;
2785 }
2786
2787 if (htab->sgot == NULL)
2788 abort ();
2789
2790 BFD_ASSERT (! unresolved_reloc);
2791 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2792 htab->sgot->contents + off);
2793 relocation = htab->sgot->output_offset + off;
2794 if (r_type == R_390_TLS_IEENT)
2795 relocation += htab->sgot->output_section->vma;
2796 unresolved_reloc = FALSE;
2797 break;
2798
2799 case R_390_TLS_LDM64:
2800 if (! info->shared)
2801 /* The literal pool entry this relocation refers to gets ignored
2802 by the optimized code of the local exec model. Do nothing
2803 and the value will turn out zero. */
2804 continue;
2805
2806 if (htab->sgot == NULL)
2807 abort ();
2808
2809 off = htab->tls_ldm_got.offset;
2810 if (off & 1)
2811 off &= ~1;
2812 else
2813 {
2814 Elf_Internal_Rela outrel;
2815 bfd_byte *loc;
2816
2817 if (htab->srelgot == NULL)
2818 abort ();
2819
2820 outrel.r_offset = (htab->sgot->output_section->vma
2821 + htab->sgot->output_offset + off);
2822
2823 bfd_put_64 (output_bfd, 0,
2824 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2825 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
2826 outrel.r_addend = 0;
2827 loc = htab->srelgot->contents;
2828 loc += htab->srelgot->reloc_count++
2829 * sizeof (Elf64_External_Rela);
2830 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2831 htab->tls_ldm_got.offset |= 1;
2832 }
2833 relocation = htab->sgot->output_offset + off;
26e41594 2834 unresolved_reloc = FALSE;
69fc87f1
MS		 2835 break;
2836
2837 case R_390_TLS_LE64:
2838 if (info->shared)
2839 {
2840 /* Linking a shared library with non-fpic code requires
2841 a R_390_TLS_TPOFF relocation. */
2842 Elf_Internal_Rela outrel;
2843 asection *sreloc;
2844 bfd_byte *loc;
2845 int indx;
2846
2847 outrel.r_offset = rel->r_offset
2848 + input_section->output_section->vma
2849 + input_section->output_offset;
2850 if (h != NULL && h->dynindx != -1)
2851 indx = h->dynindx;
2852 else
2853 indx = 0;
2854 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
2855 if (indx == 0)
2856 outrel.r_addend = relocation - dtpoff_base (info);
2857 else
2858 outrel.r_addend = 0;
2859 sreloc = elf_section_data (input_section)->sreloc;
2860 if (sreloc == NULL)
2861 abort ();
2862 loc = sreloc->contents;
2863 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2864 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2865 }
2866 else
2867 {
2868 BFD_ASSERT (! unresolved_reloc);
2869 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2870 contents + rel->r_offset);
2871 }
2872 continue;
2873
2874 case R_390_TLS_LDO64:
36c10a8f 2875 if (info->shared)
69fc87f1
MS		 2876 relocation -= dtpoff_base (info);
2877 else
2878 /* When converting LDO to LE, we must negate. */
2879 relocation = -tpoff (info, relocation);
2880 break;
2881
2882 /* Relocations for tls instructions. */
2883 case R_390_TLS_LOAD:
2884 case R_390_TLS_GDCALL:
2885 case R_390_TLS_LDCALL:
2886 tls_type = GOT_UNKNOWN;
2887 if (h == NULL && local_got_offsets)
2888 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2889 else if (h != NULL)
2890 tls_type = elf_s390_hash_entry(h)->tls_type;
2891
2892 if (tls_type == GOT_TLS_GD)
2893 continue;
2894
2895 if (r_type == R_390_TLS_LOAD)
2896 {
2897 if (!info->shared && (h == NULL || h->dynindx == -1))
2898 {
2899 /* IE->LE transition. Four valid cases:
2900 lg %rx,(0,%ry) -> sllg %rx,%ry,0
2901 lg %rx,(%ry,0) -> sllg %rx,%ry,0
2902 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
2903 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
2904 unsigned int insn0, insn1, ry;
2905
2906 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
2907 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
2908 if (insn1 != 0x0004)
2909 invalid_tls_insn (input_bfd, input_section, rel);
2910 ry = 0;
2911 if ((insn0 & 0xff00f000) == 0xe3000000)
2912 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
2913 ry = (insn0 & 0x000f0000);
2914 else if ((insn0 & 0xff0f0000) == 0xe3000000)
2915 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
2916 ry = (insn0 & 0x0000f000) << 4;
2917 else if ((insn0 & 0xff00f000) == 0xe300c000)
2918 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
2919 ry = (insn0 & 0x000f0000);
2920 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
2921 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
2922 ry = (insn0 & 0x0000f000) << 4;
2923 else
2924 invalid_tls_insn (input_bfd, input_section, rel);
2925 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
2926 insn1 = 0x000d;
2927 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
2928 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
2929 }
2930 }
2931 else if (r_type == R_390_TLS_GDCALL)
2932 {
2933 unsigned int insn0, insn1;
2934
2935 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
2936 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
2937 if ((insn0 & 0xffff0000) != 0xc0e50000)
2938 invalid_tls_insn (input_bfd, input_section, rel);
2939 if (!info->shared && (h == NULL || h->dynindx == -1))
2940 {
2941 /* GD->LE transition.
2942 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
2943 insn0 = 0xc0040000;
2944 insn1 = 0x0000;
2945 }
2946 else
2947 {
2948 /* GD->IE transition.
2949 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
2950 insn0 = 0xe322c000;
2951 insn1 = 0x0004;
2952 }
2953 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
2954 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
2955 }
2956 else if (r_type == R_390_TLS_LDCALL)
2957 {
2958 if (!info->shared)
2959 {
2960 unsigned int insn0, insn1;
2961
2962 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
2963 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
2964 if ((insn0 & 0xffff0000) != 0xc0e50000)
2965 invalid_tls_insn (input_bfd, input_section, rel);
2966 /* LD->LE transition.
2967 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
2968 insn0 = 0xc0040000;
2969 insn1 = 0x0000;
2970 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
2971 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
2972 }
2973 }
2974 continue;
2975
947216bf
AM		 2976 default:
2977 break;
2978 }
a85d7ed0 2979
239e1f3a
AM		 2980 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
2981 because such sections are not SEC_ALLOC and thus ld.so will
2982 not process them. */
0451c93c 2983 if (unresolved_reloc
239e1f3a 2984 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 2985 && h->def_dynamic))
0451c93c 2986 (*_bfd_error_handler)
843fe662 2987 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 2988 input_bfd,
2989 input_section,
0451c93c 2990 (long) rel->r_offset,
843fe662 2991 howto->name,
0451c93c
MS		 2992 h->root.root.string);
2993
bd1ea41b
MS		 2994 if (r_type == R_390_20
2995 || r_type == R_390_GOT20
2996 || r_type == R_390_GOTPLT20
2997 || r_type == R_390_TLS_GOTIE20)
2998 {
2999 relocation += rel->r_addend;
3000 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3001 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3002 contents, rel->r_offset,
3003 relocation, 0);
3004 }
3005 else
3006 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
a85d7ed0
NC		 3007 contents, rel->r_offset,
3008 relocation, rel->r_addend);
3009
3010 if (r != bfd_reloc_ok)
3011 {
0451c93c 3012 const char *name;
ec338859 3013
0451c93c
MS		 3014 if (h != NULL)
3015 name = h->root.root.string;
3016 else
a85d7ed0 3017 {
0451c93c
MS		 3018 name = bfd_elf_string_from_elf_section (input_bfd,
3019 symtab_hdr->sh_link,
3020 sym->st_name);
3021 if (name == NULL)
b34976b6 3022 return FALSE;
0451c93c
MS		 3023 if (*name == '\0')
3024 name = bfd_section_name (input_bfd, sec);
3025 }
ec338859 3026
0451c93c
MS		 3027 if (r == bfd_reloc_overflow)
3028 {
ec338859 3029
0451c93c 3030 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 3031 (info, (h ? &h->root : NULL), name, howto->name,
3032 (bfd_vma) 0, input_bfd, input_section,
3033 rel->r_offset)))
b34976b6 3034 return FALSE;
0451c93c
MS		 3035 }
3036 else
3037 {
3038 (*_bfd_error_handler)
d003868e
AM		 3039 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3040 input_bfd, input_section,
0451c93c 3041 (long) rel->r_offset, name, (int) r);
b34976b6 3042 return FALSE;
a85d7ed0
NC		 3043 }
3044 }
3045 }
3046
b34976b6 3047 return TRUE;
a85d7ed0
NC		 3048}
3049
3050/* Finish up dynamic symbol handling. We set the contents of various
3051 dynamic sections here. */
3052
b34976b6 3053static bfd_boolean
a85d7ed0
NC		 3054elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym)
3055 bfd *output_bfd;
3056 struct bfd_link_info *info;
3057 struct elf_link_hash_entry *h;
3058 Elf_Internal_Sym *sym;
3059{
0451c93c 3060 struct elf_s390_link_hash_table *htab;
a85d7ed0 3061
0451c93c 3062 htab = elf_s390_hash_table (info);
a85d7ed0
NC		 3063
3064 if (h->plt.offset != (bfd_vma) -1)
3065 {
a85d7ed0 3066 bfd_vma plt_index;
0451c93c
MS		 3067 bfd_vma got_offset;
3068 Elf_Internal_Rela rela;
947216bf 3069 bfd_byte *loc;
a85d7ed0
NC		 3070
3071 /* This symbol has an entry in the procedure linkage table. Set
947216bf 3072 it up. */
a85d7ed0 3073
0451c93c
MS		 3074 if (h->dynindx == -1
3075 || htab->splt == NULL
3076 || htab->sgotplt == NULL
3077 || htab->srelplt == NULL)
3078 abort ();
a85d7ed0 3079
99c79b2e 3080 /* Calc. index no.
947216bf 3081 Current offset - size first entry / entry size. */
a85d7ed0
NC		 3082 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3083
3084 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
947216bf 3085 addr & GOT addr. */
a85d7ed0
NC		 3086 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3087
3088 /* Fill in the blueprint of a PLT. */
0451c93c
MS		 3089 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD0,
3090 htab->splt->contents + h->plt.offset);
3091 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD1,
3092 htab->splt->contents + h->plt.offset + 4);
3093 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3094 htab->splt->contents + h->plt.offset + 8);
3095 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
3096 htab->splt->contents + h->plt.offset + 12);
3097 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD4,
3098 htab->splt->contents + h->plt.offset + 16);
3099 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD5,
3100 htab->splt->contents + h->plt.offset + 20);
3101 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD6,
3102 htab->splt->contents + h->plt.offset + 24);
3103 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD7,
3104 htab->splt->contents + h->plt.offset + 28);
a85d7ed0
NC		 3105 /* Fixup the relative address to the GOT entry */
3106 bfd_put_32 (output_bfd,
0451c93c
MS		 3107 (htab->sgotplt->output_section->vma +
3108 htab->sgotplt->output_offset + got_offset
3109 - (htab->splt->output_section->vma + h->plt.offset))/2,
3110 htab->splt->contents + h->plt.offset + 2);
a85d7ed0
NC		 3111 /* Fixup the relative branch to PLT 0 */
3112 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3113 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
0451c93c 3114 htab->splt->contents + h->plt.offset + 24);
a85d7ed0
NC		 3115 /* Fixup offset into symbol table */
3116 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
0451c93c 3117 htab->splt->contents + h->plt.offset + 28);
a85d7ed0
NC		 3118
3119 /* Fill in the entry in the global offset table.
947216bf 3120 Points to instruction after GOT offset. */
a85d7ed0 3121 bfd_put_64 (output_bfd,
0451c93c
MS		 3122 (htab->splt->output_section->vma
3123 + htab->splt->output_offset
a85d7ed0
NC		 3124 + h->plt.offset
3125 + 14),
0451c93c 3126 htab->sgotplt->contents + got_offset);
a85d7ed0 3127
0451c93c
MS		 3128 /* Fill in the entry in the .rela.plt section. */
3129 rela.r_offset = (htab->sgotplt->output_section->vma
3130 + htab->sgotplt->output_offset
3131 + got_offset);
3132 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3133 rela.r_addend = 0;
947216bf 3134 loc = htab->srelplt->contents + plt_index * sizeof (Elf64_External_Rela);
0451c93c 3135 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0 3136
f5385ebf 3137 if (!h->def_regular)
a85d7ed0
NC		 3138 {
3139 /* Mark the symbol as undefined, rather than as defined in
0451c93c
MS		 3140 the .plt section. Leave the value alone. This is a clue
3141 for the dynamic linker, to make function pointer
3142 comparisons work between an application and shared
3143 library. */
a85d7ed0
NC		 3144 sym->st_shndx = SHN_UNDEF;
3145 }
3146 }
3147
69fc87f1
MS		 3148 if (h->got.offset != (bfd_vma) -1
3149 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3150 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3151 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3152 {
a85d7ed0 3153 Elf_Internal_Rela rela;
947216bf 3154 bfd_byte *loc;
a85d7ed0
NC		 3155
3156 /* This symbol has an entry in the global offset table. Set it
947216bf 3157 up. */
0451c93c
MS		 3158 if (htab->sgot == NULL || htab->srelgot == NULL)
3159 abort ();
a85d7ed0 3160
0451c93c
MS		 3161 rela.r_offset = (htab->sgot->output_section->vma
3162 + htab->sgot->output_offset
dc810e39 3163 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0
NC		 3164
3165 /* If this is a static link, or it is a -Bsymbolic link and the
3166 symbol is defined locally or was forced to be local because
3167 of a version file, we just want to emit a RELATIVE reloc.
3168 The entry in the global offset table will already have been
3169 initialized in the relocate_section function. */
0451c93c
MS		 3170 if (info->shared
3171 && (info->symbolic
3172 || h->dynindx == -1
f5385ebf
AM		 3173 || h->forced_local)
3174 && h->def_regular)
947216bf 3175 {
0451c93c 3176 BFD_ASSERT((h->got.offset & 1) != 0);
947216bf
AM		 3177 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3178 rela.r_addend = (h->root.u.def.value
3179 + h->root.u.def.section->output_section->vma
3180 + h->root.u.def.section->output_offset);
3181 }
a85d7ed0
NC		 3182 else
3183 {
3184 BFD_ASSERT((h->got.offset & 1) == 0);
0451c93c 3185 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgot->contents + h->got.offset);
a85d7ed0 3186 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
947216bf
AM		 3187 rela.r_addend = 0;
3188 }
a85d7ed0 3189
947216bf
AM		 3190 loc = htab->srelgot->contents;
3191 loc += htab->srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3192 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3193 }
3194
f5385ebf 3195 if (h->needs_copy)
a85d7ed0 3196 {
a85d7ed0 3197 Elf_Internal_Rela rela;
947216bf 3198 bfd_byte *loc;
a85d7ed0
NC		 3199
3200 /* This symbols needs a copy reloc. Set it up. */
3201
0451c93c
MS		 3202 if (h->dynindx == -1
3203 || (h->root.type != bfd_link_hash_defined
3204 && h->root.type != bfd_link_hash_defweak)
3205 || htab->srelbss == NULL)
3206 abort ();
a85d7ed0
NC		 3207
3208 rela.r_offset = (h->root.u.def.value
3209 + h->root.u.def.section->output_section->vma
3210 + h->root.u.def.section->output_offset);
3211 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3212 rela.r_addend = 0;
947216bf
AM		 3213 loc = htab->srelbss->contents;
3214 loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3215 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3216 }
3217
3218 /* Mark some specially defined symbols as absolute. */
3219 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
22edb2f1
RS		 3220 || h == htab->elf.hgot
3221 || h == htab->elf.hplt)
a85d7ed0
NC		 3222 sym->st_shndx = SHN_ABS;
3223
b34976b6 3224 return TRUE;
a85d7ed0
NC		 3225}
3226
0451c93c
MS		 3227/* Used to decide how to sort relocs in an optimal manner for the
3228 dynamic linker, before writing them out. */
3229
3230static enum elf_reloc_type_class
3231elf_s390_reloc_type_class (rela)
3232 const Elf_Internal_Rela *rela;
3233{
3234 switch ((int) ELF64_R_TYPE (rela->r_info))
3235 {
3236 case R_390_RELATIVE:
3237 return reloc_class_relative;
3238 case R_390_JMP_SLOT:
3239 return reloc_class_plt;
3240 case R_390_COPY:
3241 return reloc_class_copy;
3242 default:
3243 return reloc_class_normal;
3244 }
3245}
3246
a85d7ed0
NC		 3247/* Finish up the dynamic sections. */
3248
b34976b6 3249static bfd_boolean
a85d7ed0
NC		 3250elf_s390_finish_dynamic_sections (output_bfd, info)
3251 bfd *output_bfd;
3252 struct bfd_link_info *info;
3253{
0451c93c 3254 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3255 bfd *dynobj;
3256 asection *sdyn;
a85d7ed0 3257
0451c93c
MS		 3258 htab = elf_s390_hash_table (info);
3259 dynobj = htab->elf.dynobj;
a85d7ed0
NC		 3260 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3261
0451c93c 3262 if (htab->elf.dynamic_sections_created)
a85d7ed0 3263 {
a85d7ed0
NC		 3264 Elf64_External_Dyn *dyncon, *dynconend;
3265
0451c93c
MS		 3266 if (sdyn == NULL || htab->sgot == NULL)
3267 abort ();
a85d7ed0
NC		 3268
3269 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 3270 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3271 for (; dyncon < dynconend; dyncon++)
3272 {
3273 Elf_Internal_Dyn dyn;
a85d7ed0 3274 asection *s;
ec338859 3275
a85d7ed0 3276 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3277
a85d7ed0
NC		 3278 switch (dyn.d_tag)
3279 {
3280 default:
0451c93c 3281 continue;
ec338859 3282
a85d7ed0 3283 case DT_PLTGOT:
0451c93c
MS		 3284 dyn.d_un.d_ptr = htab->sgot->output_section->vma;
3285 break;
ec338859 3286
a85d7ed0 3287 case DT_JMPREL:
0451c93c 3288 dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
a85d7ed0 3289 break;
ec338859 3290
a85d7ed0 3291 case DT_PLTRELSZ:
0451c93c 3292 s = htab->srelplt->output_section;
eea6121a 3293 dyn.d_un.d_val = s->size;
a85d7ed0 3294 break;
ec338859 3295
a85d7ed0
NC		 3296 case DT_RELASZ:
3297 /* The procedure linkage table relocs (DT_JMPREL) should
3298 not be included in the overall relocs (DT_RELA).
3299 Therefore, we override the DT_RELASZ entry here to
3300 make it not include the JMPREL relocs. Since the
3301 linker script arranges for .rela.plt to follow all
3302 other relocation sections, we don't have to worry
3303 about changing the DT_RELA entry. */
0451c93c 3304 s = htab->srelplt->output_section;
eea6121a 3305 dyn.d_un.d_val -= s->size;
a85d7ed0
NC		 3306 break;
3307 }
0451c93c
MS		 3308
3309 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3310 }
3311
3312 /* Fill in the special first entry in the procedure linkage table. */
eea6121a 3313 if (htab->splt && htab->splt->size > 0)
a85d7ed0
NC		 3314 {
3315 /* fill in blueprint for plt 0 entry */
0451c93c
MS		 3316 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD0,
3317 htab->splt->contents );
3318 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD1,
3319 htab->splt->contents +4 );
3320 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD3,
3321 htab->splt->contents +12 );
3322 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD4,
3323 htab->splt->contents +16 );
3324 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD5,
3325 htab->splt->contents +20 );
3326 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD6,
3327 htab->splt->contents + 24);
3328 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD7,
3329 htab->splt->contents + 28 );
a85d7ed0
NC		 3330 /* Fixup relative address to start of GOT */
3331 bfd_put_32 (output_bfd,
0451c93c
MS		 3332 (htab->sgotplt->output_section->vma +
3333 htab->sgotplt->output_offset
3334 - htab->splt->output_section->vma - 6)/2,
3335 htab->splt->contents + 8);
a85d7ed0 3336 }
0451c93c
MS		 3337 elf_section_data (htab->splt->output_section)
3338 ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
a85d7ed0
NC		 3339 }
3340
0451c93c 3341 if (htab->sgotplt)
a85d7ed0 3342 {
0451c93c 3343 /* Fill in the first three entries in the global offset table. */
eea6121a 3344 if (htab->sgotplt->size > 0)
0451c93c
MS		 3345 {
3346 bfd_put_64 (output_bfd,
3347 (sdyn == NULL ? (bfd_vma) 0
3348 : sdyn->output_section->vma + sdyn->output_offset),
3349 htab->sgotplt->contents);
3350 /* One entry for shared object struct ptr. */
3351 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
3352 /* One entry for _dl_runtime_resolve. */
3353 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 12);
3354 }
a85d7ed0 3355
0451c93c
MS		 3356 elf_section_data (htab->sgot->output_section)
3357 ->this_hdr.sh_entsize = 8;
3358 }
b34976b6 3359 return TRUE;
a85d7ed0
NC		 3360}
3361
4c45e5c9
JJ		 3362/* Return address for Ith PLT stub in section PLT, for relocation REL
3363 or (bfd_vma) -1 if it should not be included. */
3364
3365static bfd_vma
3366elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3367 const arelent *rel ATTRIBUTE_UNUSED)
3368{
3369 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3370}
3371
3372
ae9a127f
NC		 3373/* Why was the hash table entry size definition changed from
3374 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3375 this is the only reason for the s390_elf64_size_info structure. */
a85d7ed0
NC		 3376
3377const struct elf_size_info s390_elf64_size_info =
3378{
3379 sizeof (Elf64_External_Ehdr),
3380 sizeof (Elf64_External_Phdr),
3381 sizeof (Elf64_External_Shdr),
3382 sizeof (Elf64_External_Rel),
3383 sizeof (Elf64_External_Rela),
3384 sizeof (Elf64_External_Sym),
3385 sizeof (Elf64_External_Dyn),
3386 sizeof (Elf_External_Note),
ae9a127f
NC		 3387 8, /* hash-table entry size. */
3388 1, /* internal relocations per external relocations. */
3389 64, /* arch_size. */
45d6a902 3390 3, /* log_file_align. */
a85d7ed0
NC		 3391 ELFCLASS64, EV_CURRENT,
3392 bfd_elf64_write_out_phdrs,
3393 bfd_elf64_write_shdrs_and_ehdr,
1489a3a0 3394 bfd_elf64_checksum_contents,
a85d7ed0 3395 bfd_elf64_write_relocs,
73ff0d56 3396 bfd_elf64_swap_symbol_in,
a85d7ed0
NC		 3397 bfd_elf64_swap_symbol_out,
3398 bfd_elf64_slurp_reloc_table,
3399 bfd_elf64_slurp_symbol_table,
3400 bfd_elf64_swap_dyn_in,
3401 bfd_elf64_swap_dyn_out,
947216bf
AM		 3402 bfd_elf64_swap_reloc_in,
3403 bfd_elf64_swap_reloc_out,
3404 bfd_elf64_swap_reloca_in,
3405 bfd_elf64_swap_reloca_out
a85d7ed0
NC		 3406};
3407
3408#define TARGET_BIG_SYM bfd_elf64_s390_vec
3409#define TARGET_BIG_NAME "elf64-s390"
3410#define ELF_ARCH bfd_arch_s390
3411#define ELF_MACHINE_CODE EM_S390
3412#define ELF_MACHINE_ALT1 EM_S390_OLD
3413#define ELF_MAXPAGESIZE 0x1000
3414
3415#define elf_backend_size_info s390_elf64_size_info
3416
3417#define elf_backend_can_gc_sections 1
51b64d56 3418#define elf_backend_can_refcount 1
a85d7ed0
NC		 3419#define elf_backend_want_got_plt 1
3420#define elf_backend_plt_readonly 1
3421#define elf_backend_want_plt_sym 0
3422#define elf_backend_got_header_size 24
b491616a 3423#define elf_backend_rela_normal 1
a85d7ed0
NC		 3424
3425#define elf_info_to_howto elf_s390_info_to_howto
3426
a85d7ed0
NC		 3427#define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3428#define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3429#define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
157090f7 3430#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
a85d7ed0
NC		 3431
3432#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3433#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c
MS		 3434#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3435#define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
a85d7ed0
NC		 3436#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3437#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3438#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3439#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
0451c93c 3440#define elf_backend_reloc_type_class elf_s390_reloc_type_class
a85d7ed0
NC		 3441#define elf_backend_relocate_section elf_s390_relocate_section
3442#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 3443#define elf_backend_init_index_section _bfd_elf_init_1_index_section
29c2fb7c 3444#define elf_backend_reloc_type_class elf_s390_reloc_type_class
4c45e5c9 3445#define elf_backend_plt_sym_val elf_s390_plt_sym_val
a85d7ed0 3446
69fc87f1
MS		 3447#define bfd_elf64_mkobject elf_s390_mkobject
3448#define elf_backend_object_p elf_s390_object_p
a85d7ed0
NC		 3449
3450#include "elf64-target.h"
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