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2009-06-17 H.J. Lu <hongjiu.lu@intel.com>
[deliverable/binutils-gdb.git] / bfd / elf64-s390.c
CommitLineData
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");
64e77c6d
L		 779 htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
780 if (!htab->sgot || !htab->sgotplt || !htab->srelgot)
0451c93c 781 abort ();
b34976b6 782 return TRUE;
0451c93c
MS		 783}
784
785/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
786 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
787 hash table. */
788
b34976b6 789static bfd_boolean
0451c93c
MS		 790elf_s390_create_dynamic_sections (dynobj, info)
791 bfd *dynobj;
792 struct bfd_link_info *info;
793{
794 struct elf_s390_link_hash_table *htab;
795
796 htab = elf_s390_hash_table (info);
797 if (!htab->sgot && !create_got_section (dynobj, info))
b34976b6 798 return FALSE;
0451c93c
MS		 799
800 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 801 return FALSE;
0451c93c
MS		 802
803 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
804 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
805 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
806 if (!info->shared)
807 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
808
809 if (!htab->splt || !htab->srelplt || !htab->sdynbss
810 || (!info->shared && !htab->srelbss))
811 abort ();
812
b34976b6 813 return TRUE;
a85d7ed0
NC		 814}
815
0451c93c
MS		 816/* Copy the extra info we tack onto an elf_link_hash_entry. */
817
818static void
fcfa13d2
AM		 819elf_s390_copy_indirect_symbol (info, dir, ind)
820 struct bfd_link_info *info;
0451c93c
MS		 821 struct elf_link_hash_entry *dir, *ind;
822{
823 struct elf_s390_link_hash_entry *edir, *eind;
824
825 edir = (struct elf_s390_link_hash_entry *) dir;
826 eind = (struct elf_s390_link_hash_entry *) ind;
827
828 if (eind->dyn_relocs != NULL)
829 {
830 if (edir->dyn_relocs != NULL)
831 {
832 struct elf_s390_dyn_relocs **pp;
833 struct elf_s390_dyn_relocs *p;
834
fcfa13d2 835 /* Add reloc counts against the indirect sym to the direct sym
0451c93c
MS		 836 list. Merge any entries against the same section. */
837 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
838 {
839 struct elf_s390_dyn_relocs *q;
840
841 for (q = edir->dyn_relocs; q != NULL; q = q->next)
842 if (q->sec == p->sec)
843 {
844 q->pc_count += p->pc_count;
845 q->count += p->count;
846 *pp = p->next;
847 break;
848 }
849 if (q == NULL)
850 pp = &p->next;
851 }
852 *pp = edir->dyn_relocs;
853 }
854
855 edir->dyn_relocs = eind->dyn_relocs;
856 eind->dyn_relocs = NULL;
857 }
858
69fc87f1
MS		 859 if (ind->root.type == bfd_link_hash_indirect
860 && dir->got.refcount <= 0)
861 {
862 edir->tls_type = eind->tls_type;
863 eind->tls_type = GOT_UNKNOWN;
864 }
865
64285810
MS		 866 if (ELIMINATE_COPY_RELOCS
867 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 868 && dir->dynamic_adjusted)
869 {
870 /* If called to transfer flags for a weakdef during processing
871 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
872 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
873 dir->ref_dynamic |= ind->ref_dynamic;
874 dir->ref_regular |= ind->ref_regular;
875 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
876 dir->needs_plt |= ind->needs_plt;
877 }
64285810 878 else
fcfa13d2 879 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
0451c93c 880}
a85d7ed0 881
69fc87f1
MS		 882static int
883elf_s390_tls_transition (info, r_type, is_local)
884 struct bfd_link_info *info;
885 int r_type;
886 int is_local;
887{
888 if (info->shared)
889 return r_type;
890
891 switch (r_type)
892 {
893 case R_390_TLS_GD64:
894 case R_390_TLS_IE64:
895 if (is_local)
896 return R_390_TLS_LE64;
897 return R_390_TLS_IE64;
898 case R_390_TLS_GOTIE64:
899 if (is_local)
900 return R_390_TLS_LE64;
901 return R_390_TLS_GOTIE64;
902 case R_390_TLS_LDM64:
903 return R_390_TLS_LE64;
904 }
905
906 return r_type;
907}
908
a85d7ed0
NC		 909/* Look through the relocs for a section during the first phase, and
910 allocate space in the global offset table or procedure linkage
911 table. */
912
b34976b6 913static bfd_boolean
a85d7ed0
NC		 914elf_s390_check_relocs (abfd, info, sec, relocs)
915 bfd *abfd;
916 struct bfd_link_info *info;
917 asection *sec;
918 const Elf_Internal_Rela *relocs;
919{
0451c93c 920 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 921 Elf_Internal_Shdr *symtab_hdr;
922 struct elf_link_hash_entry **sym_hashes;
a85d7ed0
NC		 923 const Elf_Internal_Rela *rel;
924 const Elf_Internal_Rela *rel_end;
a85d7ed0 925 asection *sreloc;
5236c819 926 bfd_signed_vma *local_got_refcounts;
69fc87f1 927 int tls_type, old_tls_type;
a85d7ed0 928
1049f94e 929 if (info->relocatable)
b34976b6 930 return TRUE;
a85d7ed0 931
0ffa91dd
NC		 932 BFD_ASSERT (is_s390_elf (abfd));
933
0451c93c 934 htab = elf_s390_hash_table (info);
0ffa91dd 935 symtab_hdr = &elf_symtab_hdr (abfd);
a85d7ed0 936 sym_hashes = elf_sym_hashes (abfd);
5236c819 937 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0 938
a85d7ed0
NC		 939 sreloc = NULL;
940
941 rel_end = relocs + sec->reloc_count;
942 for (rel = relocs; rel < rel_end; rel++)
943 {
69fc87f1 944 unsigned int r_type;
a85d7ed0
NC		 945 unsigned long r_symndx;
946 struct elf_link_hash_entry *h;
947
948 r_symndx = ELF64_R_SYM (rel->r_info);
949
0451c93c
MS		 950 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
951 {
d003868e
AM		 952 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
953 abfd,
0451c93c 954 r_symndx);
b34976b6 955 return FALSE;
0451c93c
MS		 956 }
957
a85d7ed0
NC		 958 if (r_symndx < symtab_hdr->sh_info)
959 h = NULL;
960 else
973a3492
L		 961 {
962 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
963 while (h->root.type == bfd_link_hash_indirect
964 || h->root.type == bfd_link_hash_warning)
965 h = (struct elf_link_hash_entry *) h->root.u.i.link;
966 }
a85d7ed0 967
5236c819
MS		 968 /* Create got section and local_got_refcounts array if they
969 are needed. */
69fc87f1
MS		 970 r_type = elf_s390_tls_transition (info,
971 ELF64_R_TYPE (rel->r_info),
972 h == NULL);
973 switch (r_type)
a85d7ed0
NC		 974 {
975 case R_390_GOT12:
947216bf 976 case R_390_GOT16:
bd1ea41b 977 case R_390_GOT20:
a85d7ed0
NC		 978 case R_390_GOT32:
979 case R_390_GOT64:
980 case R_390_GOTENT:
5236c819
MS		 981 case R_390_GOTPLT12:
982 case R_390_GOTPLT16:
bd1ea41b 983 case R_390_GOTPLT20:
5236c819
MS		 984 case R_390_GOTPLT32:
985 case R_390_GOTPLT64:
986 case R_390_GOTPLTENT:
69fc87f1
MS		 987 case R_390_TLS_GD64:
988 case R_390_TLS_GOTIE12:
bd1ea41b 989 case R_390_TLS_GOTIE20:
69fc87f1
MS		 990 case R_390_TLS_GOTIE64:
991 case R_390_TLS_IEENT:
992 case R_390_TLS_IE64:
993 case R_390_TLS_LDM64:
5236c819
MS		 994 if (h == NULL
995 && local_got_refcounts == NULL)
a85d7ed0 996 {
5236c819 997 bfd_size_type size;
0451c93c 998
5236c819 999 size = symtab_hdr->sh_info;
69fc87f1 1000 size *= (sizeof (bfd_signed_vma) + sizeof(char));
5236c819
MS		 1001 local_got_refcounts = ((bfd_signed_vma *)
1002 bfd_zalloc (abfd, size));
a85d7ed0 1003 if (local_got_refcounts == NULL)
5236c819
MS		 1004 return FALSE;
1005 elf_local_got_refcounts (abfd) = local_got_refcounts;
69fc87f1
MS		 1006 elf_s390_local_got_tls_type (abfd)
1007 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
a85d7ed0 1008 }
5236c819
MS		 1009 /* Fall through. */
1010 case R_390_GOTOFF16:
1011 case R_390_GOTOFF32:
1012 case R_390_GOTOFF64:
0451c93c
MS		 1013 case R_390_GOTPC:
1014 case R_390_GOTPCDBL:
1015 if (htab->sgot == NULL)
1016 {
1017 if (htab->elf.dynobj == NULL)
1018 htab->elf.dynobj = abfd;
1019 if (!create_got_section (htab->elf.dynobj, info))
b34976b6 1020 return FALSE;
0451c93c 1021 }
5236c819
MS		 1022 }
1023
69fc87f1 1024 switch (r_type)
5236c819 1025 {
5236c819
MS		 1026 case R_390_GOTOFF16:
1027 case R_390_GOTOFF32:
1028 case R_390_GOTOFF64:
1029 case R_390_GOTPC:
1030 case R_390_GOTPCDBL:
1031 /* Got is created, nothing to be done. */
0451c93c 1032 break;
ec338859 1033
947216bf 1034 case R_390_PLT16DBL:
a85d7ed0
NC		 1035 case R_390_PLT32:
1036 case R_390_PLT32DBL:
1037 case R_390_PLT64:
5236c819
MS		 1038 case R_390_PLTOFF16:
1039 case R_390_PLTOFF32:
1040 case R_390_PLTOFF64:
a85d7ed0 1041 /* This symbol requires a procedure linkage table entry. We
947216bf
AM		 1042 actually build the entry in adjust_dynamic_symbol,
1043 because this might be a case of linking PIC code which is
1044 never referenced by a dynamic object, in which case we
1045 don't need to generate a procedure linkage table entry
1046 after all. */
ec338859 1047
a85d7ed0 1048 /* If this is a local symbol, we resolve it directly without
947216bf 1049 creating a procedure linkage table entry. */
5236c819
MS		 1050 if (h != NULL)
1051 {
f5385ebf 1052 h->needs_plt = 1;
5236c819
MS		 1053 h->plt.refcount += 1;
1054 }
1055 break;
ec338859 1056
5236c819
MS		 1057 case R_390_GOTPLT12:
1058 case R_390_GOTPLT16:
bd1ea41b 1059 case R_390_GOTPLT20:
5236c819
MS		 1060 case R_390_GOTPLT32:
1061 case R_390_GOTPLT64:
1062 case R_390_GOTPLTENT:
1063 /* This symbol requires either a procedure linkage table entry
1064 or an entry in the local got. We actually build the entry
1065 in adjust_dynamic_symbol because whether this is really a
1066 global reference can change and with it the fact if we have
1067 to create a plt entry or a local got entry. To be able to
1068 make a once global symbol a local one we have to keep track
1069 of the number of gotplt references that exist for this
1070 symbol. */
1071 if (h != NULL)
1072 {
1073 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
f5385ebf 1074 h->needs_plt = 1;
5236c819
MS		 1075 h->plt.refcount += 1;
1076 }
69fc87f1
MS		 1077 else
1078 local_got_refcounts[r_symndx] += 1;
1079 break;
1080
1081 case R_390_TLS_LDM64:
1082 htab->tls_ldm_got.refcount += 1;
1083 break;
1084
1085 case R_390_TLS_IE64:
1086 case R_390_TLS_GOTIE12:
bd1ea41b 1087 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1088 case R_390_TLS_GOTIE64:
1089 case R_390_TLS_IEENT:
1090 if (info->shared)
1091 info->flags |= DF_STATIC_TLS;
1092 /* Fall through */
1093
1094 case R_390_GOT12:
26e41594 1095 case R_390_GOT16:
bd1ea41b 1096 case R_390_GOT20:
69fc87f1
MS		 1097 case R_390_GOT32:
1098 case R_390_GOT64:
1099 case R_390_GOTENT:
1100 case R_390_TLS_GD64:
1101 /* This symbol requires a global offset table entry. */
1102 switch (r_type)
1103 {
1104 default:
1105 case R_390_GOT12:
1106 case R_390_GOT16:
bd1ea41b 1107 case R_390_GOT20:
69fc87f1
MS		 1108 case R_390_GOT32:
1109 case R_390_GOTENT:
1110 tls_type = GOT_NORMAL;
1111 break;
1112 case R_390_TLS_GD64:
1113 tls_type = GOT_TLS_GD;
1114 break;
1115 case R_390_TLS_IE64:
1116 case R_390_TLS_GOTIE64:
1117 tls_type = GOT_TLS_IE;
1118 break;
1119 case R_390_TLS_GOTIE12:
bd1ea41b 1120 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1121 case R_390_TLS_IEENT:
1122 tls_type = GOT_TLS_IE_NLT;
1123 break;
1124 }
1125
1126 if (h != NULL)
1127 {
1128 h->got.refcount += 1;
1129 old_tls_type = elf_s390_hash_entry(h)->tls_type;
1130 }
5236c819
MS		 1131 else
1132 {
1133 local_got_refcounts[r_symndx] += 1;
69fc87f1 1134 old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
5236c819 1135 }
69fc87f1
MS		 1136 /* If a TLS symbol is accessed using IE at least once,
1137 there is no point to use dynamic model for it. */
1138 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1139 {
1140 if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1141 {
1142 (*_bfd_error_handler)
d003868e
AM		 1143 (_("%B: `%s' accessed both as normal and thread local symbol"),
1144 abfd, h->root.root.string);
69fc87f1
MS		 1145 return FALSE;
1146 }
1147 if (old_tls_type > tls_type)
1148 tls_type = old_tls_type;
1149 }
1150
1151 if (old_tls_type != tls_type)
1152 {
1153 if (h != NULL)
1154 elf_s390_hash_entry (h)->tls_type = tls_type;
1155 else
1156 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1157 }
1158
1159 if (r_type != R_390_TLS_IE64)
1160 break;
1161 /* Fall through */
1162
1163 case R_390_TLS_LE64:
1164 if (!info->shared)
1165 break;
1166 info->flags |= DF_STATIC_TLS;
1167 /* Fall through */
ec338859 1168
947216bf
AM		 1169 case R_390_8:
1170 case R_390_16:
a85d7ed0
NC		 1171 case R_390_32:
1172 case R_390_64:
947216bf
AM		 1173 case R_390_PC16:
1174 case R_390_PC16DBL:
a85d7ed0
NC		 1175 case R_390_PC32:
1176 case R_390_PC32DBL:
1177 case R_390_PC64:
0451c93c
MS		 1178 if (h != NULL && !info->shared)
1179 {
1180 /* If this reloc is in a read-only section, we might
1181 need a copy reloc. We can't check reliably at this
1182 stage whether the section is read-only, as input
1183 sections have not yet been mapped to output sections.
1184 Tentatively set the flag for now, and correct in
1185 adjust_dynamic_symbol. */
f5385ebf 1186 h->non_got_ref = 1;
ec338859 1187
0451c93c
MS		 1188 /* We may need a .plt entry if the function this reloc
1189 refers to is in a shared lib. */
1190 h->plt.refcount += 1;
1191 }
ec338859 1192
a85d7ed0 1193 /* If we are creating a shared library, and this is a reloc
0451c93c
MS		 1194 against a global symbol, or a non PC relative reloc
1195 against a local symbol, then we need to copy the reloc
1196 into the shared library. However, if we are linking with
1197 -Bsymbolic, we do not need to copy a reloc against a
1198 global symbol which is defined in an object we are
1199 including in the link (i.e., DEF_REGULAR is set). At
1200 this point we have not seen all the input files, so it is
1201 possible that DEF_REGULAR is not set now but will be set
1202 later (it is never cleared). In case of a weak definition,
1203 DEF_REGULAR may be cleared later by a strong definition in
1204 a shared library. We account for that possibility below by
1205 storing information in the relocs_copied field of the hash
1206 table entry. A similar situation occurs when creating
1207 shared libraries and symbol visibility changes render the
1208 symbol local.
1209
1210 If on the other hand, we are creating an executable, we
1211 may need to keep relocations for symbols satisfied by a
1212 dynamic library if we manage to avoid copy relocs for the
1213 symbol. */
1214 if ((info->shared
1215 && (sec->flags & SEC_ALLOC) != 0
1216 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
1217 && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
1218 && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1219 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1220 && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1221 || (h != NULL
8c21ca21 1222 && (! SYMBOLIC_BIND (info, h)
0451c93c 1223 || h->root.type == bfd_link_hash_defweak
f5385ebf 1224 || !h->def_regular))))
64285810
MS		 1225 || (ELIMINATE_COPY_RELOCS
1226 && !info->shared
0451c93c
MS		 1227 && (sec->flags & SEC_ALLOC) != 0
1228 && h != NULL
1229 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1230 || !h->def_regular)))
a85d7ed0 1231 {
ec338859
AM		 1232 struct elf_s390_dyn_relocs *p;
1233 struct elf_s390_dyn_relocs **head;
1234
0451c93c
MS		 1235 /* We must copy these reloc types into the output file.
1236 Create a reloc section in dynobj and make room for
1237 this reloc. */
a85d7ed0
NC		 1238 if (sreloc == NULL)
1239 {
440e9cd2
AK		 1240 if (htab->elf.dynobj == NULL)
1241 htab->elf.dynobj = abfd;
1242
83bac4b0
NC		 1243 sreloc = _bfd_elf_make_dynamic_reloc_section
1244 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
ec338859 1245
a85d7ed0 1246 if (sreloc == NULL)
83bac4b0 1247 return FALSE;
a85d7ed0 1248 }
ec338859 1249
0451c93c
MS		 1250 /* If this is a global symbol, we count the number of
1251 relocations we need for this symbol. */
1252 if (h != NULL)
a85d7ed0 1253 {
ec338859 1254 head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
0451c93c
MS		 1255 }
1256 else
1257 {
ec338859
AM		 1258 /* Track dynamic relocs needed for local syms too.
1259 We really need local syms available to do this
1260 easily. Oh well. */
1261
1262 asection *s;
6edfbbad
DJ		 1263 void *vpp;
1264
ec338859
AM		 1265 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1266 sec, r_symndx);
1267 if (s == NULL)
b34976b6 1268 return FALSE;
ec338859 1269
6edfbbad
DJ		 1270 vpp = &elf_section_data (s)->local_dynrel;
1271 head = (struct elf_s390_dyn_relocs **) vpp;
ec338859
AM		 1272 }
1273
1274 p = *head;
1275 if (p == NULL || p->sec != sec)
1276 {
1277 bfd_size_type amt = sizeof *p;
1278 p = ((struct elf_s390_dyn_relocs *)
1279 bfd_alloc (htab->elf.dynobj, amt));
1280 if (p == NULL)
b34976b6 1281 return FALSE;
ec338859
AM		 1282 p->next = *head;
1283 *head = p;
1284 p->sec = sec;
1285 p->count = 0;
1286 p->pc_count = 0;
a85d7ed0 1287 }
ec338859
AM		 1288
1289 p->count += 1;
1290 if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
1291 || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1292 || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1293 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1294 || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1295 p->pc_count += 1;
a85d7ed0 1296 }
a85d7ed0 1297 break;
ec338859 1298
a85d7ed0
NC		 1299 /* This relocation describes the C++ object vtable hierarchy.
1300 Reconstruct it for later use during GC. */
947216bf 1301 case R_390_GNU_VTINHERIT:
c152c796 1302 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 1303 return FALSE;
947216bf 1304 break;
ec338859 1305
a85d7ed0
NC		 1306 /* This relocation describes which C++ vtable entries are actually
1307 used. Record for later use during GC. */
947216bf 1308 case R_390_GNU_VTENTRY:
d17e0c6e
JB		 1309 BFD_ASSERT (h != NULL);
1310 if (h != NULL
1311 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 1312 return FALSE;
947216bf 1313 break;
ec338859 1314
a85d7ed0
NC		 1315 default:
1316 break;
1317 }
1318 }
1319
b34976b6 1320 return TRUE;
a85d7ed0
NC		 1321}
1322
1323/* Return the section that should be marked against GC for a given
1324 relocation. */
1325
1326static asection *
07adf181
AM		 1327elf_s390_gc_mark_hook (asection *sec,
1328 struct bfd_link_info *info,
1329 Elf_Internal_Rela *rel,
1330 struct elf_link_hash_entry *h,
1331 Elf_Internal_Sym *sym)
a85d7ed0
NC		 1332{
1333 if (h != NULL)
07adf181
AM		 1334 switch (ELF64_R_TYPE (rel->r_info))
1335 {
1336 case R_390_GNU_VTINHERIT:
1337 case R_390_GNU_VTENTRY:
1338 return NULL;
1339 }
1340
1341 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
a85d7ed0
NC		 1342}
1343
1344/* Update the got entry reference counts for the section being removed. */
1345
b34976b6 1346static bfd_boolean
07adf181
AM		 1347elf_s390_gc_sweep_hook (bfd *abfd,
1348 struct bfd_link_info *info,
1349 asection *sec,
1350 const Elf_Internal_Rela *relocs)
a85d7ed0
NC		 1351{
1352 Elf_Internal_Shdr *symtab_hdr;
1353 struct elf_link_hash_entry **sym_hashes;
1354 bfd_signed_vma *local_got_refcounts;
1355 const Elf_Internal_Rela *rel, *relend;
a85d7ed0 1356
7dda2462
TG		 1357 if (info->relocatable)
1358 return TRUE;
1359
ec338859 1360 elf_section_data (sec)->local_dynrel = NULL;
a85d7ed0 1361
0ffa91dd 1362 symtab_hdr = &elf_symtab_hdr (abfd);
0451c93c
MS		 1363 sym_hashes = elf_sym_hashes (abfd);
1364 local_got_refcounts = elf_local_got_refcounts (abfd);
a85d7ed0
NC		 1365
1366 relend = relocs + sec->reloc_count;
1367 for (rel = relocs; rel < relend; rel++)
5236c819 1368 {
26e41594
AM		 1369 unsigned long r_symndx;
1370 unsigned int r_type;
1371 struct elf_link_hash_entry *h = NULL;
1372
5236c819 1373 r_symndx = ELF64_R_SYM (rel->r_info);
26e41594
AM		 1374 if (r_symndx >= symtab_hdr->sh_info)
1375 {
1376 struct elf_s390_link_hash_entry *eh;
1377 struct elf_s390_dyn_relocs **pp;
1378 struct elf_s390_dyn_relocs *p;
5236c819 1379
26e41594 1380 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1381 while (h->root.type == bfd_link_hash_indirect
1382 || h->root.type == bfd_link_hash_warning)
1383 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1384 eh = (struct elf_s390_link_hash_entry *) h;
5236c819 1385
26e41594
AM		 1386 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1387 if (p->sec == sec)
1388 {
1389 /* Everything must go for SEC. */
1390 *pp = p->next;
1391 break;
1392 }
1393 }
1394
1395 r_type = ELF64_R_TYPE (rel->r_info);
1396 r_type = elf_s390_tls_transition (info, r_type, h != NULL);
69fc87f1 1397 switch (r_type)
5236c819 1398 {
69fc87f1
MS		 1399 case R_390_TLS_LDM64:
1400 if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1401 elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1402 break;
1403
1404 case R_390_TLS_GD64:
1405 case R_390_TLS_IE64:
1406 case R_390_TLS_GOTIE12:
bd1ea41b 1407 case R_390_TLS_GOTIE20:
69fc87f1
MS		 1408 case R_390_TLS_GOTIE64:
1409 case R_390_TLS_IEENT:
5236c819
MS		 1410 case R_390_GOT12:
1411 case R_390_GOT16:
bd1ea41b 1412 case R_390_GOT20:
5236c819
MS		 1413 case R_390_GOT32:
1414 case R_390_GOT64:
1415 case R_390_GOTOFF16:
1416 case R_390_GOTOFF32:
1417 case R_390_GOTOFF64:
1418 case R_390_GOTPC:
1419 case R_390_GOTPCDBL:
1420 case R_390_GOTENT:
1421 if (h != NULL)
1422 {
1423 if (h->got.refcount > 0)
1424 h->got.refcount -= 1;
1425 }
1426 else if (local_got_refcounts != NULL)
1427 {
1428 if (local_got_refcounts[r_symndx] > 0)
1429 local_got_refcounts[r_symndx] -= 1;
1430 }
26e41594 1431 break;
a85d7ed0 1432
5236c819
MS		 1433 case R_390_8:
1434 case R_390_12:
1435 case R_390_16:
bd1ea41b 1436 case R_390_20:
5236c819
MS		 1437 case R_390_32:
1438 case R_390_64:
1439 case R_390_PC16:
1440 case R_390_PC16DBL:
1441 case R_390_PC32:
1442 case R_390_PC32DBL:
1443 case R_390_PC64:
26e41594
AM		 1444 if (info->shared)
1445 break;
1446 /* Fall through */
a85d7ed0 1447
69fc87f1
MS		 1448 case R_390_PLT16DBL:
1449 case R_390_PLT32:
1450 case R_390_PLT32DBL:
1451 case R_390_PLT64:
1452 case R_390_PLTOFF16:
1453 case R_390_PLTOFF32:
1454 case R_390_PLTOFF64:
1455 if (h != NULL)
1456 {
1457 if (h->plt.refcount > 0)
1458 h->plt.refcount -= 1;
1459 }
1460 break;
1461
1462 case R_390_GOTPLT12:
1463 case R_390_GOTPLT16:
bd1ea41b 1464 case R_390_GOTPLT20:
69fc87f1
MS		 1465 case R_390_GOTPLT32:
1466 case R_390_GOTPLT64:
1467 case R_390_GOTPLTENT:
1468 if (h != NULL)
1469 {
1470 if (h->plt.refcount > 0)
1471 {
1472 ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1473 h->plt.refcount -= 1;
1474 }
1475 }
1476 else if (local_got_refcounts != NULL)
1477 {
1478 if (local_got_refcounts[r_symndx] > 0)
1479 local_got_refcounts[r_symndx] -= 1;
1480 }
1481 break;
1482
5236c819
MS		 1483 default:
1484 break;
1485 }
1486 }
a85d7ed0 1487
b34976b6 1488 return TRUE;
a85d7ed0
NC		 1489}
1490
5236c819
MS		 1491/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1492 entry but we found we will not create any. Called when we find we will
1493 not have any PLT for this symbol, by for example
1494 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1495 or elf_s390_size_dynamic_sections if no dynamic sections will be
1496 created (we're only linking static objects). */
1497
1498static void
1499elf_s390_adjust_gotplt (h)
1500 struct elf_s390_link_hash_entry *h;
1501{
1502 if (h->elf.root.type == bfd_link_hash_warning)
1503 h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1504
1505 if (h->gotplt_refcount <= 0)
1506 return;
1507
1508 /* We simply add the number of gotplt references to the number
1509 * of got references for this symbol. */
1510 h->elf.got.refcount += h->gotplt_refcount;
1511 h->gotplt_refcount = -1;
1512}
1513
a85d7ed0
NC		 1514/* Adjust a symbol defined by a dynamic object and referenced by a
1515 regular object. The current definition is in some section of the
1516 dynamic object, but we're not including those sections. We have to
1517 change the definition to something the rest of the link can
1518 understand. */
1519
b34976b6 1520static bfd_boolean
a85d7ed0
NC		 1521elf_s390_adjust_dynamic_symbol (info, h)
1522 struct bfd_link_info *info;
1523 struct elf_link_hash_entry *h;
1524{
0451c93c 1525 struct elf_s390_link_hash_table *htab;
a85d7ed0 1526 asection *s;
a85d7ed0 1527
a85d7ed0
NC		 1528 /* If this is a function, put it in the procedure linkage table. We
1529 will fill in the contents of the procedure linkage table later
cedb70c5 1530 (although we could actually do it here). */
a85d7ed0 1531 if (h->type == STT_FUNC
f5385ebf 1532 || h->needs_plt)
a85d7ed0 1533 {
0451c93c 1534 if (h->plt.refcount <= 0
8c21ca21
AK		 1535 || SYMBOL_CALLS_LOCAL (info, h)
1536 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1537 && h->root.type == bfd_link_hash_undefweak))
a85d7ed0
NC		 1538 {
1539 /* This case can occur if we saw a PLT32 reloc in an input
947216bf
AM		 1540 file, but the symbol was never referred to by a dynamic
1541 object, or if all references were garbage collected. In
0451c93c
MS		 1542 such a case, we don't actually need to build a procedure
1543 linkage table, and we can just do a PC32 reloc instead. */
a85d7ed0 1544 h->plt.offset = (bfd_vma) -1;
f5385ebf 1545 h->needs_plt = 0;
5236c819 1546 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
a85d7ed0
NC		 1547 }
1548
b34976b6 1549 return TRUE;
a85d7ed0 1550 }
bbd7ec4a 1551 else
0451c93c
MS		 1552 /* It's possible that we incorrectly decided a .plt reloc was
1553 needed for an R_390_PC32 reloc to a non-function sym in
1554 check_relocs. We can't decide accurately between function and
1555 non-function syms in check-relocs; Objects loaded later in
1556 the link may change h->type. So fix it now. */
bbd7ec4a 1557 h->plt.offset = (bfd_vma) -1;
a85d7ed0
NC		 1558
1559 /* If this is a weak symbol, and there is a real definition, the
1560 processor independent code will have arranged for us to see the
1561 real definition first, and we can just use the same value. */
f6e332e6 1562 if (h->u.weakdef != NULL)
a85d7ed0 1563 {
f6e332e6
AM		 1564 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1565 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1566 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1567 h->root.u.def.value = h->u.weakdef->root.u.def.value;
64285810 1568 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1569 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1570 return TRUE;
a85d7ed0
NC		 1571 }
1572
1573 /* This is a reference to a symbol defined by a dynamic object which
1574 is not a function. */
1575
1576 /* If we are creating a shared library, we must presume that the
1577 only references to the symbol are via the global offset table.
1578 For such cases we need not do anything here; the relocations will
1579 be handled correctly by relocate_section. */
1580 if (info->shared)
b34976b6 1581 return TRUE;
a85d7ed0
NC		 1582
1583 /* If there are no references to this symbol that do not use the
1584 GOT, we don't need to generate a copy reloc. */
f5385ebf 1585 if (!h->non_got_ref)
b34976b6 1586 return TRUE;
a85d7ed0 1587
0451c93c
MS		 1588 /* If -z nocopyreloc was given, we won't generate them either. */
1589 if (info->nocopyreloc)
1590 {
f5385ebf 1591 h->non_got_ref = 0;
b34976b6 1592 return TRUE;
0451c93c
MS		 1593 }
1594
64285810 1595 if (ELIMINATE_COPY_RELOCS)
0451c93c 1596 {
64285810
MS		 1597 struct elf_s390_link_hash_entry * eh;
1598 struct elf_s390_dyn_relocs *p;
0451c93c 1599
64285810
MS		 1600 eh = (struct elf_s390_link_hash_entry *) h;
1601 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1602 {
1603 s = p->sec->output_section;
1604 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1605 break;
1606 }
1607
1608 /* If we didn't find any dynamic relocs in read-only sections, then
1609 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1610 if (p == NULL)
1611 {
f5385ebf 1612 h->non_got_ref = 0;
64285810
MS		 1613 return TRUE;
1614 }
0451c93c
MS		 1615 }
1616
909272ee
AM		 1617 if (h->size == 0)
1618 {
1619 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1620 h->root.root.string);
1621 return TRUE;
1622 }
1623
a85d7ed0
NC		 1624 /* We must allocate the symbol in our .dynbss section, which will
1625 become part of the .bss section of the executable. There will be
1626 an entry for this symbol in the .dynsym section. The dynamic
1627 object will contain position independent code, so all references
1628 from the dynamic object to this symbol will go through the global
1629 offset table. The dynamic linker will use the .dynsym entry to
1630 determine the address it must put in the global offset table, so
1631 both the dynamic object and the regular object will refer to the
1632 same memory location for the variable. */
1633
0451c93c 1634 htab = elf_s390_hash_table (info);
a85d7ed0 1635
0451c93c
MS		 1636 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1637 copy the initial value out of the dynamic object and into the
1638 runtime process image. */
a85d7ed0
NC		 1639 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1640 {
eea6121a 1641 htab->srelbss->size += sizeof (Elf64_External_Rela);
f5385ebf 1642 h->needs_copy = 1;
a85d7ed0
NC		 1643 }
1644
0451c93c 1645 s = htab->sdynbss;
a85d7ed0 1646
027297b7 1647 return _bfd_elf_adjust_dynamic_copy (h, s);
a85d7ed0
NC		 1648}
1649
0451c93c
MS		 1650/* Allocate space in .plt, .got and associated reloc sections for
1651 dynamic relocs. */
1652
b34976b6 1653static bfd_boolean
0451c93c
MS		 1654allocate_dynrelocs (h, inf)
1655 struct elf_link_hash_entry *h;
1656 PTR inf;
1657{
1658 struct bfd_link_info *info;
1659 struct elf_s390_link_hash_table *htab;
1660 struct elf_s390_link_hash_entry *eh;
1661 struct elf_s390_dyn_relocs *p;
1662
e92d460e 1663 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1664 return TRUE;
0451c93c 1665
e92d460e 1666 if (h->root.type == bfd_link_hash_warning)
5236c819
MS		 1667 /* When warning symbols are created, they **replace** the "real"
1668 entry in the hash table, thus we never get to see the real
1669 symbol in a hash traversal. So look at it now. */
e92d460e
AM		 1670 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1671
0451c93c
MS		 1672 info = (struct bfd_link_info *) inf;
1673 htab = elf_s390_hash_table (info);
1674
1675 if (htab->elf.dynamic_sections_created
8c21ca21 1676 && h->plt.refcount > 0)
0451c93c
MS		 1677 {
1678 /* Make sure this symbol is output as a dynamic symbol.
1679 Undefined weak syms won't yet be marked as dynamic. */
1680 if (h->dynindx == -1
f5385ebf 1681 && !h->forced_local)
0451c93c 1682 {
c152c796 1683 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1684 return FALSE;
0451c93c
MS		 1685 }
1686
82058a73 1687 if (info->shared
4ec72bde 1688 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
0451c93c
MS		 1689 {
1690 asection *s = htab->splt;
1691
1692 /* If this is the first .plt entry, make room for the special
1693 first entry. */
eea6121a
AM		 1694 if (s->size == 0)
1695 s->size += PLT_FIRST_ENTRY_SIZE;
0451c93c 1696
eea6121a 1697 h->plt.offset = s->size;
0451c93c
MS		 1698
1699 /* If this symbol is not defined in a regular file, and we are
1700 not generating a shared library, then set the symbol to this
1701 location in the .plt. This is required to make function
1702 pointers compare as equal between the normal executable and
1703 the shared library. */
1704 if (! info->shared
f5385ebf 1705 && !h->def_regular)
0451c93c
MS		 1706 {
1707 h->root.u.def.section = s;
1708 h->root.u.def.value = h->plt.offset;
1709 }
ec338859 1710
0451c93c 1711 /* Make room for this entry. */
eea6121a 1712 s->size += PLT_ENTRY_SIZE;
ec338859 1713
0451c93c
MS		 1714 /* We also need to make an entry in the .got.plt section, which
1715 will be placed in the .got section by the linker script. */
eea6121a 1716 htab->sgotplt->size += GOT_ENTRY_SIZE;
0451c93c
MS		 1717
1718 /* We also need to make an entry in the .rela.plt section. */
eea6121a 1719 htab->srelplt->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1720 }
1721 else
1722 {
1723 h->plt.offset = (bfd_vma) -1;
f5385ebf 1724 h->needs_plt = 0;
5236c819 1725 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1726 }
1727 }
1728 else
1729 {
1730 h->plt.offset = (bfd_vma) -1;
f5385ebf 1731 h->needs_plt = 0;
5236c819 1732 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
0451c93c
MS		 1733 }
1734
69fc87f1
MS		 1735 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1736 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1737 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1738 we can save the dynamic TLS relocation. */
1739 if (h->got.refcount > 0
1740 && !info->shared
1741 && h->dynindx == -1
1742 && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1743 {
1744 if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1745 /* For the GOTIE access without a literal pool entry the offset has
1746 to be stored somewhere. The immediate value in the instruction
1747 is not bit enough so the value is stored in the got. */
1748 {
eea6121a
AM		 1749 h->got.offset = htab->sgot->size;
1750 htab->sgot->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1751 }
1752 else
1753 h->got.offset = (bfd_vma) -1;
1754 }
1755 else if (h->got.refcount > 0)
0451c93c
MS		 1756 {
1757 asection *s;
b34976b6 1758 bfd_boolean dyn;
69fc87f1 1759 int tls_type = elf_s390_hash_entry(h)->tls_type;
0451c93c
MS		 1760
1761 /* Make sure this symbol is output as a dynamic symbol.
1762 Undefined weak syms won't yet be marked as dynamic. */
1763 if (h->dynindx == -1
f5385ebf 1764 && !h->forced_local)
0451c93c 1765 {
c152c796 1766 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1767 return FALSE;
0451c93c
MS		 1768 }
1769
1770 s = htab->sgot;
eea6121a
AM		 1771 h->got.offset = s->size;
1772 s->size += GOT_ENTRY_SIZE;
69fc87f1
MS		 1773 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1774 if (tls_type == GOT_TLS_GD)
eea6121a 1775 s->size += GOT_ENTRY_SIZE;
0451c93c 1776 dyn = htab->elf.dynamic_sections_created;
69fc87f1
MS		 1777 /* R_390_TLS_IE64 needs one dynamic relocation,
1778 R_390_TLS_GD64 needs one if local symbol and two if global. */
1779 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1780 || tls_type >= GOT_TLS_IE)
eea6121a 1781 htab->srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1 1782 else if (tls_type == GOT_TLS_GD)
eea6121a 1783 htab->srelgot->size += 2 * sizeof (Elf64_External_Rela);
82058a73
MS		 1784 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1785 || h->root.type != bfd_link_hash_undefweak)
1786 && (info->shared
1787 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
eea6121a 1788 htab->srelgot->size += sizeof (Elf64_External_Rela);
0451c93c
MS		 1789 }
1790 else
1791 h->got.offset = (bfd_vma) -1;
1792
1793 eh = (struct elf_s390_link_hash_entry *) h;
1794 if (eh->dyn_relocs == NULL)
b34976b6 1795 return TRUE;
0451c93c
MS		 1796
1797 /* In the shared -Bsymbolic case, discard space allocated for
1798 dynamic pc-relative relocs against symbols which turn out to be
1799 defined in regular objects. For the normal shared case, discard
1800 space for pc-relative relocs that have become local due to symbol
1801 visibility changes. */
1802
1803 if (info->shared)
1804 {
8c21ca21 1805 if (SYMBOL_CALLS_LOCAL (info, h))
0451c93c
MS		 1806 {
1807 struct elf_s390_dyn_relocs **pp;
1808
1809 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1810 {
1811 p->count -= p->pc_count;
1812 p->pc_count = 0;
1813 if (p->count == 0)
1814 *pp = p->next;
1815 else
1816 pp = &p->next;
1817 }
1818 }
82058a73
MS		 1819
1820 /* Also discard relocs on undefined weak syms with non-default
1821 visibility. */
22d606e9 1822 if (eh->dyn_relocs != NULL
82058a73 1823 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 1824 {
1825 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1826 eh->dyn_relocs = NULL;
1827
1828 /* Make sure undefined weak symbols are output as a dynamic
1829 symbol in PIEs. */
1830 else if (h->dynindx == -1
1831 && !h->forced_local)
1832 {
1833 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1834 return FALSE;
1835 }
1836 }
0451c93c 1837 }
64285810 1838 else if (ELIMINATE_COPY_RELOCS)
0451c93c
MS		 1839 {
1840 /* For the non-shared case, discard space for relocs against
1841 symbols which turn out to need copy relocs or are not
1842 dynamic. */
1843
f5385ebf
AM		 1844 if (!h->non_got_ref
1845 && ((h->def_dynamic
1846 && !h->def_regular)
0451c93c
MS		 1847 || (htab->elf.dynamic_sections_created
1848 && (h->root.type == bfd_link_hash_undefweak
1849 || h->root.type == bfd_link_hash_undefined))))
1850 {
1851 /* Make sure this symbol is output as a dynamic symbol.
1852 Undefined weak syms won't yet be marked as dynamic. */
1853 if (h->dynindx == -1
f5385ebf 1854 && !h->forced_local)
0451c93c 1855 {
c152c796 1856 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1857 return FALSE;
0451c93c
MS		 1858 }
1859
1860 /* If that succeeded, we know we'll be keeping all the
1861 relocs. */
1862 if (h->dynindx != -1)
1863 goto keep;
1864 }
1865
1866 eh->dyn_relocs = NULL;
1867
ec338859 1868 keep: ;
0451c93c
MS		 1869 }
1870
1871 /* Finally, allocate space. */
1872 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1873 {
1874 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1875 sreloc->size += p->count * sizeof (Elf64_External_Rela);
0451c93c
MS		 1876 }
1877
b34976b6 1878 return TRUE;
0451c93c
MS		 1879}
1880
1881/* Find any dynamic relocs that apply to read-only sections. */
1882
b34976b6 1883static bfd_boolean
0451c93c
MS		 1884readonly_dynrelocs (h, inf)
1885 struct elf_link_hash_entry *h;
1886 PTR inf;
1887{
1888 struct elf_s390_link_hash_entry *eh;
1889 struct elf_s390_dyn_relocs *p;
1890
e92d460e
AM		 1891 if (h->root.type == bfd_link_hash_warning)
1892 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1893
0451c93c
MS		 1894 eh = (struct elf_s390_link_hash_entry *) h;
1895 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1896 {
1897 asection *s = p->sec->output_section;
1898
1899 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1900 {
1901 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1902
1903 info->flags |= DF_TEXTREL;
1904
1905 /* Not an error, just cut short the traversal. */
b34976b6 1906 return FALSE;
0451c93c
MS		 1907 }
1908 }
b34976b6 1909 return TRUE;
0451c93c
MS		 1910}
1911
a85d7ed0
NC		 1912/* Set the sizes of the dynamic sections. */
1913
b34976b6 1914static bfd_boolean
a85d7ed0 1915elf_s390_size_dynamic_sections (output_bfd, info)
29c2fb7c 1916 bfd *output_bfd ATTRIBUTE_UNUSED;
a85d7ed0
NC		 1917 struct bfd_link_info *info;
1918{
0451c93c 1919 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 1920 bfd *dynobj;
1921 asection *s;
b34976b6 1922 bfd_boolean relocs;
0451c93c 1923 bfd *ibfd;
a85d7ed0 1924
0451c93c
MS		 1925 htab = elf_s390_hash_table (info);
1926 dynobj = htab->elf.dynobj;
1927 if (dynobj == NULL)
1928 abort ();
a85d7ed0 1929
0451c93c 1930 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 1931 {
1932 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 1933 if (info->executable)
a85d7ed0
NC		 1934 {
1935 s = bfd_get_section_by_name (dynobj, ".interp");
0451c93c
MS		 1936 if (s == NULL)
1937 abort ();
eea6121a 1938 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
a85d7ed0
NC		 1939 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1940 }
1941 }
a85d7ed0 1942
0451c93c
MS		 1943 /* Set up .got offsets for local syms, and space for local dynamic
1944 relocs. */
1945 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
a85d7ed0 1946 {
0451c93c
MS		 1947 bfd_signed_vma *local_got;
1948 bfd_signed_vma *end_local_got;
69fc87f1 1949 char *local_tls_type;
0451c93c
MS		 1950 bfd_size_type locsymcount;
1951 Elf_Internal_Shdr *symtab_hdr;
1952 asection *srela;
a85d7ed0 1953
0ffa91dd 1954 if (! is_s390_elf (ibfd))
a85d7ed0
NC		 1955 continue;
1956
0451c93c 1957 for (s = ibfd->sections; s != NULL; s = s->next)
a85d7ed0 1958 {
ec338859 1959 struct elf_s390_dyn_relocs *p;
0451c93c 1960
6edfbbad 1961 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
a85d7ed0 1962 {
ec338859
AM		 1963 if (!bfd_is_abs_section (p->sec)
1964 && bfd_is_abs_section (p->sec->output_section))
1965 {
1966 /* Input section has been discarded, either because
1967 it is a copy of a linkonce section or due to
1968 linker script /DISCARD/, so we'll be discarding
1969 the relocs too. */
1970 }
248866a8 1971 else if (p->count != 0)
ec338859
AM		 1972 {
1973 srela = elf_section_data (p->sec)->sreloc;
eea6121a 1974 srela->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 1975 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1976 info->flags |= DF_TEXTREL;
ec338859 1977 }
a85d7ed0
NC		 1978 }
1979 }
0451c93c
MS		 1980
1981 local_got = elf_local_got_refcounts (ibfd);
1982 if (!local_got)
1983 continue;
1984
0ffa91dd 1985 symtab_hdr = &elf_symtab_hdr (ibfd);
0451c93c
MS		 1986 locsymcount = symtab_hdr->sh_info;
1987 end_local_got = local_got + locsymcount;
69fc87f1 1988 local_tls_type = elf_s390_local_got_tls_type (ibfd);
0451c93c
MS		 1989 s = htab->sgot;
1990 srela = htab->srelgot;
69fc87f1 1991 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
a85d7ed0 1992 {
0451c93c 1993 if (*local_got > 0)
a85d7ed0 1994 {
eea6121a
AM		 1995 *local_got = s->size;
1996 s->size += GOT_ENTRY_SIZE;
69fc87f1 1997 if (*local_tls_type == GOT_TLS_GD)
eea6121a 1998 s->size += GOT_ENTRY_SIZE;
0451c93c 1999 if (info->shared)
eea6121a 2000 srela->size += sizeof (Elf64_External_Rela);
a85d7ed0
NC		 2001 }
2002 else
0451c93c 2003 *local_got = (bfd_vma) -1;
a85d7ed0 2004 }
0451c93c
MS		 2005 }
2006
69fc87f1
MS		 2007 if (htab->tls_ldm_got.refcount > 0)
2008 {
2009 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
2010 relocs. */
eea6121a
AM		 2011 htab->tls_ldm_got.offset = htab->sgot->size;
2012 htab->sgot->size += 2 * GOT_ENTRY_SIZE;
2013 htab->srelgot->size += sizeof (Elf64_External_Rela);
69fc87f1
MS		 2014 }
2015 else
2016 htab->tls_ldm_got.offset = -1;
2017
0451c93c
MS		 2018 /* Allocate global sym .plt and .got entries, and space for global
2019 sym dynamic relocs. */
2020 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2021
2022 /* We now have determined the sizes of the various dynamic sections.
2023 Allocate memory for them. */
b34976b6 2024 relocs = FALSE;
0451c93c
MS		 2025 for (s = dynobj->sections; s != NULL; s = s->next)
2026 {
2027 if ((s->flags & SEC_LINKER_CREATED) == 0)
2028 continue;
2029
2030 if (s == htab->splt
2031 || s == htab->sgot
c456f082
AM		 2032 || s == htab->sgotplt
2033 || s == htab->sdynbss)
0451c93c
MS		 2034 {
2035 /* Strip this section if we don't need it; see the
2036 comment below. */
2037 }
0112cd26 2038 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
0451c93c 2039 {
eea6121a 2040 if (s->size != 0 && s != htab->srelplt)
b34976b6 2041 relocs = TRUE;
ec338859 2042
0451c93c
MS		 2043 /* We use the reloc_count field as a counter if we need
2044 to copy relocs into the output file. */
2045 s->reloc_count = 0;
2046 }
2047 else
a85d7ed0
NC		 2048 {
2049 /* It's not one of our sections, so don't allocate space. */
2050 continue;
2051 }
2052
eea6121a 2053 if (s->size == 0)
a85d7ed0 2054 {
0451c93c
MS		 2055 /* If we don't need this section, strip it from the
2056 output file. This is to handle .rela.bss and
2057 .rela.plt. We must create it in
2058 create_dynamic_sections, because it must be created
2059 before the linker maps input sections to output
2060 sections. The linker does that before
2061 adjust_dynamic_symbol is called, and it is that
2062 function which decides whether anything needs to go
2063 into these sections. */
2064
8423293d 2065 s->flags |= SEC_EXCLUDE;
a85d7ed0
NC		 2066 continue;
2067 }
2068
c456f082
AM		 2069 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2070 continue;
2071
0451c93c
MS		 2072 /* Allocate memory for the section contents. We use bfd_zalloc
2073 here in case unused entries are not reclaimed before the
2074 section's contents are written out. This should not happen,
2075 but this way if it does, we get a R_390_NONE reloc instead
2076 of garbage. */
eea6121a 2077 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
0451c93c 2078 if (s->contents == NULL)
b34976b6 2079 return FALSE;
a85d7ed0
NC		 2080 }
2081
0451c93c 2082 if (htab->elf.dynamic_sections_created)
a85d7ed0
NC		 2083 {
2084 /* Add some entries to the .dynamic section. We fill in the
2085 values later, in elf_s390_finish_dynamic_sections, but we
2086 must add the entries now so that we get the correct size for
2087 the .dynamic section. The DT_DEBUG entry is filled in by the
2088 dynamic linker and used by the debugger. */
dc810e39 2089#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2090 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2091
36af4a4e 2092 if (info->executable)
a85d7ed0 2093 {
dc810e39 2094 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2095 return FALSE;
a85d7ed0
NC		 2096 }
2097
eea6121a 2098 if (htab->splt->size != 0)
a85d7ed0 2099 {
dc810e39
AM		 2100 if (!add_dynamic_entry (DT_PLTGOT, 0)
2101 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2102 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2103 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2104 return FALSE;
a85d7ed0
NC		 2105 }
2106
2107 if (relocs)
947216bf
AM		 2108 {
2109 if (!add_dynamic_entry (DT_RELA, 0)
2110 || !add_dynamic_entry (DT_RELASZ, 0)
2111 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 2112 return FALSE;
ec338859 2113
0451c93c
MS		 2114 /* If any dynamic relocs apply to a read-only section,
2115 then we need a DT_TEXTREL entry. */
248866a8
AM		 2116 if ((info->flags & DF_TEXTREL) == 0)
2117 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2118 (PTR) info);
ec338859 2119
0451c93c
MS		 2120 if ((info->flags & DF_TEXTREL) != 0)
2121 {
2122 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2123 return FALSE;
0451c93c 2124 }
a85d7ed0
NC		 2125 }
2126 }
dc810e39 2127#undef add_dynamic_entry
a85d7ed0 2128
b34976b6 2129 return TRUE;
a85d7ed0
NC		 2130}
2131
69fc87f1
MS		 2132/* Return the base VMA address which should be subtracted from real addresses
2133 when resolving @dtpoff relocation.
2134 This is PT_TLS segment p_vaddr. */
2135
2136static bfd_vma
2137dtpoff_base (info)
2138 struct bfd_link_info *info;
2139{
e1918d23
AM		 2140 /* If tls_sec is NULL, we should have signalled an error already. */
2141 if (elf_hash_table (info)->tls_sec == NULL)
69fc87f1 2142 return 0;
e1918d23 2143 return elf_hash_table (info)->tls_sec->vma;
69fc87f1
MS		 2144}
2145
2146/* Return the relocation value for @tpoff relocation
2147 if STT_TLS virtual address is ADDRESS. */
2148
2149static bfd_vma
2150tpoff (info, address)
2151 struct bfd_link_info *info;
2152 bfd_vma address;
2153{
e1918d23 2154 struct elf_link_hash_table *htab = elf_hash_table (info);
69fc87f1 2155
e1918d23
AM		 2156 /* If tls_sec is NULL, we should have signalled an error already. */
2157 if (htab->tls_sec == NULL)
69fc87f1 2158 return 0;
e1918d23 2159 return htab->tls_size + htab->tls_sec->vma - address;
69fc87f1
MS		 2160}
2161
2162/* Complain if TLS instruction relocation is against an invalid
2163 instruction. */
2164
2165static void
2166invalid_tls_insn (input_bfd, input_section, rel)
2167 bfd *input_bfd;
2168 asection *input_section;
2169 Elf_Internal_Rela *rel;
2170{
2171 reloc_howto_type *howto;
2172
2173 howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
2174 (*_bfd_error_handler)
d003868e
AM		 2175 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2176 input_bfd,
2177 input_section,
69fc87f1
MS		 2178 (long) rel->r_offset,
2179 howto->name);
77df2968 2180 bfd_set_error (bfd_error_bad_value);
69fc87f1
MS		 2181}
2182
a85d7ed0
NC		 2183/* Relocate a 390 ELF section. */
2184
b34976b6 2185static bfd_boolean
a85d7ed0
NC		 2186elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
2187 contents, relocs, local_syms, local_sections)
2188 bfd *output_bfd;
2189 struct bfd_link_info *info;
2190 bfd *input_bfd;
2191 asection *input_section;
2192 bfd_byte *contents;
2193 Elf_Internal_Rela *relocs;
2194 Elf_Internal_Sym *local_syms;
2195 asection **local_sections;
2196{
0451c93c 2197 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 2198 Elf_Internal_Shdr *symtab_hdr;
2199 struct elf_link_hash_entry **sym_hashes;
2200 bfd_vma *local_got_offsets;
a85d7ed0
NC		 2201 Elf_Internal_Rela *rel;
2202 Elf_Internal_Rela *relend;
2203
0ffa91dd
NC		 2204 BFD_ASSERT (is_s390_elf (input_bfd));
2205
0451c93c 2206 htab = elf_s390_hash_table (info);
0ffa91dd 2207 symtab_hdr = &elf_symtab_hdr (input_bfd);
a85d7ed0
NC		 2208 sym_hashes = elf_sym_hashes (input_bfd);
2209 local_got_offsets = elf_local_got_offsets (input_bfd);
2210
a85d7ed0
NC		 2211 rel = relocs;
2212 relend = relocs + input_section->reloc_count;
2213 for (; rel < relend; rel++)
2214 {
5236c819 2215 unsigned int r_type;
a85d7ed0
NC		 2216 reloc_howto_type *howto;
2217 unsigned long r_symndx;
2218 struct elf_link_hash_entry *h;
2219 Elf_Internal_Sym *sym;
2220 asection *sec;
0451c93c 2221 bfd_vma off;
a85d7ed0 2222 bfd_vma relocation;
b34976b6 2223 bfd_boolean unresolved_reloc;
a85d7ed0 2224 bfd_reloc_status_type r;
69fc87f1 2225 int tls_type;
a85d7ed0
NC		 2226
2227 r_type = ELF64_R_TYPE (rel->r_info);
0451c93c 2228 if (r_type == (int) R_390_GNU_VTINHERIT
947216bf
AM		 2229 || r_type == (int) R_390_GNU_VTENTRY)
2230 continue;
5236c819 2231 if (r_type >= (int) R_390_max)
a85d7ed0
NC		 2232 {
2233 bfd_set_error (bfd_error_bad_value);
b34976b6 2234 return FALSE;
a85d7ed0 2235 }
a85d7ed0 2236
b491616a 2237 howto = elf_howto_table + r_type;
a85d7ed0 2238 r_symndx = ELF64_R_SYM (rel->r_info);
5236c819 2239
a85d7ed0
NC		 2240 h = NULL;
2241 sym = NULL;
2242 sec = NULL;
b34976b6 2243 unresolved_reloc = FALSE;
a85d7ed0
NC		 2244 if (r_symndx < symtab_hdr->sh_info)
2245 {
2246 sym = local_syms + r_symndx;
2247 sec = local_sections[r_symndx];
8517fae7 2248 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a85d7ed0
NC		 2249 }
2250 else
2251 {
560e09e9 2252 bfd_boolean warned ATTRIBUTE_UNUSED;
0451c93c 2253
b2a8e766
AM		 2254 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2255 r_symndx, symtab_hdr, sym_hashes,
2256 h, sec, relocation,
2257 unresolved_reloc, warned);
a85d7ed0
NC		 2258 }
2259
ab96bf03
AM		 2260 if (sec != NULL && elf_discarded_section (sec))
2261 {
2262 /* For relocs against symbols from removed linkonce sections,
2263 or sections discarded by a linker script, we just want the
2264 section contents zeroed. Avoid any special processing. */
2265 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2266 rel->r_info = 0;
2267 rel->r_addend = 0;
2268 continue;
2269 }
2270
2271 if (info->relocatable)
2272 continue;
2273
a85d7ed0
NC		 2274 switch (r_type)
2275 {
5236c819
MS		 2276 case R_390_GOTPLT12:
2277 case R_390_GOTPLT16:
bd1ea41b 2278 case R_390_GOTPLT20:
5236c819
MS		 2279 case R_390_GOTPLT32:
2280 case R_390_GOTPLT64:
2281 case R_390_GOTPLTENT:
2282 /* There are three cases for a GOTPLT relocation. 1) The
2283 relocation is against the jump slot entry of a plt that
2284 will get emitted to the output file. 2) The relocation
2285 is against the jump slot of a plt entry that has been
2286 removed. elf_s390_adjust_gotplt has created a GOT entry
2287 as replacement. 3) The relocation is against a local symbol.
2288 Cases 2) and 3) are the same as the GOT relocation code
2289 so we just have to test for case 1 and fall through for
2290 the other two. */
2291 if (h != NULL && h->plt.offset != (bfd_vma) -1)
2292 {
2293 bfd_vma plt_index;
2294
2295 /* Calc. index no.
2296 Current offset - size first entry / entry size. */
2297 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2298 PLT_ENTRY_SIZE;
26e41594 2299
5236c819
MS		 2300 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
2301 addr & GOT addr. */
2302 relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2303 unresolved_reloc = FALSE;
2304
2305 if (r_type == R_390_GOTPLTENT)
26e41594 2306 relocation += htab->sgot->output_section->vma;
5236c819
MS		 2307 break;
2308 }
2309 /* Fall through. */
2310
947216bf
AM		 2311 case R_390_GOT12:
2312 case R_390_GOT16:
bd1ea41b 2313 case R_390_GOT20:
947216bf
AM		 2314 case R_390_GOT32:
2315 case R_390_GOT64:
2316 case R_390_GOTENT:
2317 /* Relocation is to the entry for this symbol in the global
2318 offset table. */
0451c93c
MS		 2319 if (htab->sgot == NULL)
2320 abort ();
a85d7ed0 2321
947216bf
AM		 2322 if (h != NULL)
2323 {
b34976b6 2324 bfd_boolean dyn;
a85d7ed0 2325
947216bf 2326 off = h->got.offset;
0451c93c 2327 dyn = htab->elf.dynamic_sections_created;
4ec72bde 2328 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
947216bf 2329 || (info->shared
8c21ca21 2330 && SYMBOL_REFERENCES_LOCAL (info, h))
82058a73
MS		 2331 || (ELF_ST_VISIBILITY (h->other)
2332 && h->root.type == bfd_link_hash_undefweak))
947216bf
AM		 2333 {
2334 /* This is actually a static link, or it is a
2335 -Bsymbolic link and the symbol is defined
2336 locally, or the symbol was forced to be local
2337 because of a version file. We must initialize
2338 this entry in the global offset table. Since the
2339 offset must always be a multiple of 2, we use the
2340 least significant bit to record whether we have
2341 initialized it already.
2342
2343 When doing a dynamic link, we create a .rel.got
2344 relocation entry to initialize the value. This
2345 is done in the finish_dynamic_symbol routine. */
2346 if ((off & 1) != 0)
2347 off &= ~1;
2348 else
2349 {
a85d7ed0 2350 bfd_put_64 (output_bfd, relocation,
0451c93c 2351 htab->sgot->contents + off);
947216bf
AM		 2352 h->got.offset |= 1;
2353 }
2354 }
0451c93c 2355 else
b34976b6 2356 unresolved_reloc = FALSE;
947216bf
AM		 2357 }
2358 else
2359 {
0451c93c
MS		 2360 if (local_got_offsets == NULL)
2361 abort ();
a85d7ed0 2362
947216bf 2363 off = local_got_offsets[r_symndx];
a85d7ed0 2364
947216bf
AM		 2365 /* The offset must always be a multiple of 8. We use
2366 the least significant bit to record whether we have
2367 already generated the necessary reloc. */
2368 if ((off & 1) != 0)
2369 off &= ~1;
2370 else
2371 {
2372 bfd_put_64 (output_bfd, relocation,
0451c93c 2373 htab->sgot->contents + off);
a85d7ed0 2374
947216bf
AM		 2375 if (info->shared)
2376 {
2377 asection *s;
2378 Elf_Internal_Rela outrel;
2379 bfd_byte *loc;
a85d7ed0 2380
947216bf
AM		 2381 s = htab->srelgot;
2382 if (s == NULL)
0451c93c 2383 abort ();
a85d7ed0 2384
947216bf
AM		 2385 outrel.r_offset = (htab->sgot->output_section->vma
2386 + htab->sgot->output_offset
2387 + off);
2388 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
a85d7ed0 2389 outrel.r_addend = relocation;
947216bf
AM		 2390 loc = s->contents;
2391 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2392 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2393 }
a85d7ed0 2394
947216bf
AM		 2395 local_got_offsets[r_symndx] |= 1;
2396 }
2397 }
a85d7ed0 2398
0451c93c
MS		 2399 if (off >= (bfd_vma) -2)
2400 abort ();
2401
2402 relocation = htab->sgot->output_offset + off;
2403
ae9a127f
NC		 2404 /* For @GOTENT the relocation is against the offset between
2405 the instruction and the symbols entry in the GOT and not
2406 between the start of the GOT and the symbols entry. We
2407 add the vma of the GOT to get the correct value. */
5236c819
MS		 2408 if ( r_type == R_390_GOTENT
2409 || r_type == R_390_GOTPLTENT)
0451c93c 2410 relocation += htab->sgot->output_section->vma;
a85d7ed0 2411
947216bf 2412 break;
99c79b2e 2413
5236c819
MS		 2414 case R_390_GOTOFF16:
2415 case R_390_GOTOFF32:
2416 case R_390_GOTOFF64:
947216bf
AM		 2417 /* Relocation is relative to the start of the global offset
2418 table. */
a85d7ed0 2419
947216bf
AM		 2420 /* Note that sgot->output_offset is not involved in this
2421 calculation. We always want the start of .got. If we
2422 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2423 permitted by the ABI, we might have to change this
2424 calculation. */
2425 relocation -= htab->sgot->output_section->vma;
947216bf 2426 break;
a85d7ed0 2427
947216bf 2428 case R_390_GOTPC:
a85d7ed0 2429 case R_390_GOTPCDBL:
947216bf
AM		 2430 /* Use global offset table as symbol value. */
2431 relocation = htab->sgot->output_section->vma;
b34976b6 2432 unresolved_reloc = FALSE;
947216bf 2433 break;
a85d7ed0 2434
947216bf
AM		 2435 case R_390_PLT16DBL:
2436 case R_390_PLT32:
2437 case R_390_PLT32DBL:
2438 case R_390_PLT64:
2439 /* Relocation is to the entry for this symbol in the
2440 procedure linkage table. */
a85d7ed0 2441
947216bf
AM		 2442 /* Resolve a PLT32 reloc against a local symbol directly,
2443 without using the procedure linkage table. */
2444 if (h == NULL)
2445 break;
a85d7ed0 2446
947216bf 2447 if (h->plt.offset == (bfd_vma) -1
0451c93c 2448 || htab->splt == NULL)
947216bf
AM		 2449 {
2450 /* We didn't make a PLT entry for this symbol. This
2451 happens when statically linking PIC code, or when
2452 using -Bsymbolic. */
2453 break;
2454 }
2455
2456 relocation = (htab->splt->output_section->vma
2457 + htab->splt->output_offset
2458 + h->plt.offset);
b34976b6 2459 unresolved_reloc = FALSE;
26e41594 2460 break;
5236c819
MS		 2461
2462 case R_390_PLTOFF16:
2463 case R_390_PLTOFF32:
2464 case R_390_PLTOFF64:
26e41594
AM		 2465 /* Relocation is to the entry for this symbol in the
2466 procedure linkage table relative to the start of the GOT. */
5236c819
MS		 2467
2468 /* For local symbols or if we didn't make a PLT entry for
2469 this symbol resolve the symbol directly. */
26e41594 2470 if ( h == NULL
5236c819
MS		 2471 || h->plt.offset == (bfd_vma) -1
2472 || htab->splt == NULL)
2473 {
2474 relocation -= htab->sgot->output_section->vma;
2475 break;
2476 }
2477
26e41594
AM		 2478 relocation = (htab->splt->output_section->vma
2479 + htab->splt->output_offset
2480 + h->plt.offset
5236c819
MS		 2481 - htab->sgot->output_section->vma);
2482 unresolved_reloc = FALSE;
947216bf
AM		 2483 break;
2484
2485 case R_390_8:
2486 case R_390_16:
2487 case R_390_32:
2488 case R_390_64:
2489 case R_390_PC16:
2490 case R_390_PC16DBL:
2491 case R_390_PC32:
a85d7ed0 2492 case R_390_PC32DBL:
947216bf 2493 case R_390_PC64:
b1e24c02 2494 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2495 break;
2496
947216bf 2497 if ((info->shared
82058a73
MS		 2498 && (h == NULL
2499 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2500 || h->root.type != bfd_link_hash_undefweak)
0451c93c
MS		 2501 && ((r_type != R_390_PC16
2502 && r_type != R_390_PC16DBL
2503 && r_type != R_390_PC32
2504 && r_type != R_390_PC32DBL
2505 && r_type != R_390_PC64)
8c21ca21 2506 || !SYMBOL_CALLS_LOCAL (info, h)))
64285810
MS		 2507 || (ELIMINATE_COPY_RELOCS
2508 && !info->shared
0451c93c
MS		 2509 && h != NULL
2510 && h->dynindx != -1
f5385ebf
AM		 2511 && !h->non_got_ref
2512 && ((h->def_dynamic
2513 && !h->def_regular)
0451c93c
MS		 2514 || h->root.type == bfd_link_hash_undefweak
2515 || h->root.type == bfd_link_hash_undefined)))
947216bf
AM		 2516 {
2517 Elf_Internal_Rela outrel;
b34976b6 2518 bfd_boolean skip, relocate;
0451c93c 2519 asection *sreloc;
947216bf 2520 bfd_byte *loc;
a85d7ed0 2521
947216bf
AM		 2522 /* When generating a shared object, these relocations
2523 are copied into the output file to be resolved at run
2524 time. */
b34976b6
AM		 2525 skip = FALSE;
2526 relocate = FALSE;
a85d7ed0 2527
c629eae0
JJ		 2528 outrel.r_offset =
2529 _bfd_elf_section_offset (output_bfd, info, input_section,
2530 rel->r_offset);
2531 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2532 skip = TRUE;
0bb2d96a 2533 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2534 skip = TRUE, relocate = TRUE;
a85d7ed0 2535
947216bf
AM		 2536 outrel.r_offset += (input_section->output_section->vma
2537 + input_section->output_offset);
a85d7ed0 2538
947216bf 2539 if (skip)
0bb2d96a 2540 memset (&outrel, 0, sizeof outrel);
947216bf 2541 else if (h != NULL
0451c93c
MS		 2542 && h->dynindx != -1
2543 && (r_type == R_390_PC16
2544 || r_type == R_390_PC16DBL
2545 || r_type == R_390_PC32
2546 || r_type == R_390_PC32DBL
2547 || r_type == R_390_PC64
2548 || !info->shared
8c21ca21 2549 || !SYMBOLIC_BIND (info, h)
f5385ebf 2550 || !h->def_regular))
947216bf
AM		 2551 {
2552 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
27018c3f 2553 outrel.r_addend = rel->r_addend;
947216bf
AM		 2554 }
2555 else
2556 {
0451c93c 2557 /* This symbol is local, or marked to become local. */
90ced0dd 2558 outrel.r_addend = relocation + rel->r_addend;
b5727d75
MS		 2559 if (r_type == R_390_64)
2560 {
2561 relocate = TRUE;
2562 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
b5727d75
MS		 2563 }
2564 else
2565 {
2566 long sindx;
2567
90ced0dd 2568 if (bfd_is_abs_section (sec))
b5727d75
MS		 2569 sindx = 0;
2570 else if (sec == NULL || sec->owner == NULL)
2571 {
2572 bfd_set_error(bfd_error_bad_value);
2573 return FALSE;
2574 }
2575 else
2576 {
2577 asection *osec;
2578
2579 osec = sec->output_section;
2580 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 2581
2582 if (sindx == 0)
2583 {
2584 osec = htab->elf.text_index_section;
2585 sindx = elf_section_data (osec)->dynindx;
2586 }
2587 BFD_ASSERT (sindx != 0);
90ced0dd
MS		 2588
2589 /* We are turning this relocation into one
2590 against a section symbol, so subtract out
2591 the output section's address but not the
2592 offset of the input section in the output
2593 section. */
90ced0dd 2594 outrel.r_addend -= osec->vma;
b5727d75
MS		 2595 }
2596 outrel.r_info = ELF64_R_INFO (sindx, r_type);
b5727d75 2597 }
0451c93c 2598 }
a85d7ed0 2599
0451c93c
MS		 2600 sreloc = elf_section_data (input_section)->sreloc;
2601 if (sreloc == NULL)
2602 abort ();
2603
947216bf
AM		 2604 loc = sreloc->contents;
2605 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2606 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
a85d7ed0 2607
947216bf
AM		 2608 /* If this reloc is against an external symbol, we do
2609 not want to fiddle with the addend. Otherwise, we
2610 need to include the symbol value so that it becomes
2611 an addend for the dynamic reloc. */
2612 if (! relocate)
2613 continue;
2614 }
a85d7ed0 2615
947216bf 2616 break;
a85d7ed0 2617
69fc87f1
MS		 2618 /* Relocations for tls literal pool entries. */
2619 case R_390_TLS_IE64:
2620 if (info->shared)
2621 {
2622 Elf_Internal_Rela outrel;
2623 asection *sreloc;
2624 bfd_byte *loc;
2625
2626 outrel.r_offset = rel->r_offset
2627 + input_section->output_section->vma
2628 + input_section->output_offset;
2629 outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2630 sreloc = elf_section_data (input_section)->sreloc;
2631 if (sreloc == NULL)
2632 abort ();
2633 loc = sreloc->contents;
2634 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2635 bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2636 }
ae9a127f 2637 /* Fall through. */
69fc87f1
MS		 2638
2639 case R_390_TLS_GD64:
2640 case R_390_TLS_GOTIE64:
2641 r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2642 tls_type = GOT_UNKNOWN;
2643 if (h == NULL && local_got_offsets)
2644 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2645 else if (h != NULL)
2646 {
2647 tls_type = elf_s390_hash_entry(h)->tls_type;
2648 if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2649 r_type = R_390_TLS_LE64;
2650 }
2651 if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2652 r_type = R_390_TLS_IE64;
2653
2654 if (r_type == R_390_TLS_LE64)
2655 {
2656 /* This relocation gets optimized away by the local exec
2657 access optimization. */
2658 BFD_ASSERT (! unresolved_reloc);
2659 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2660 contents + rel->r_offset);
2661 continue;
2662 }
2663
2664 if (htab->sgot == NULL)
2665 abort ();
2666
2667 if (h != NULL)
2668 off = h->got.offset;
2669 else
2670 {
2671 if (local_got_offsets == NULL)
2672 abort ();
2673
2674 off = local_got_offsets[r_symndx];
2675 }
2676
2677 emit_tls_relocs:
2678
2679 if ((off & 1) != 0)
2680 off &= ~1;
26e41594 2681 else
69fc87f1
MS		 2682 {
2683 Elf_Internal_Rela outrel;
2684 bfd_byte *loc;
2685 int dr_type, indx;
2686
2687 if (htab->srelgot == NULL)
2688 abort ();
2689
2690 outrel.r_offset = (htab->sgot->output_section->vma
2691 + htab->sgot->output_offset + off);
2692
2693 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2694 if (r_type == R_390_TLS_GD64)
2695 dr_type = R_390_TLS_DTPMOD;
2696 else
2697 dr_type = R_390_TLS_TPOFF;
2698 if (dr_type == R_390_TLS_TPOFF && indx == 0)
2699 outrel.r_addend = relocation - dtpoff_base (info);
2700 else
2701 outrel.r_addend = 0;
2702 outrel.r_info = ELF64_R_INFO (indx, dr_type);
2703 loc = htab->srelgot->contents;
2704 loc += htab->srelgot->reloc_count++
2705 * sizeof (Elf64_External_Rela);
2706 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2707
2708 if (r_type == R_390_TLS_GD64)
2709 {
2710 if (indx == 0)
2711 {
2712 BFD_ASSERT (! unresolved_reloc);
2713 bfd_put_64 (output_bfd,
2714 relocation - dtpoff_base (info),
2715 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2716 }
2717 else
2718 {
2719 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
2720 outrel.r_offset += GOT_ENTRY_SIZE;
2721 outrel.r_addend = 0;
2722 htab->srelgot->reloc_count++;
2723 loc += sizeof (Elf64_External_Rela);
2724 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2725 }
2726 }
2727
2728 if (h != NULL)
2729 h->got.offset |= 1;
2730 else
2731 local_got_offsets[r_symndx] |= 1;
2732 }
2733
2734 if (off >= (bfd_vma) -2)
2735 abort ();
2736 if (r_type == ELF64_R_TYPE (rel->r_info))
2737 {
2738 relocation = htab->sgot->output_offset + off;
2739 if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
2740 relocation += htab->sgot->output_section->vma;
2741 unresolved_reloc = FALSE;
2742 }
2743 else
2744 {
2745 bfd_put_64 (output_bfd, htab->sgot->output_offset + off,
2746 contents + rel->r_offset);
2747 continue;
2748 }
2749 break;
2750
2751 case R_390_TLS_GOTIE12:
bd1ea41b 2752 case R_390_TLS_GOTIE20:
69fc87f1
MS		 2753 case R_390_TLS_IEENT:
2754 if (h == NULL)
2755 {
2756 if (local_got_offsets == NULL)
2757 abort();
2758 off = local_got_offsets[r_symndx];
2759 if (info->shared)
2760 goto emit_tls_relocs;
2761 }
2762 else
2763 {
2764 off = h->got.offset;
2765 tls_type = elf_s390_hash_entry(h)->tls_type;
2766 if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
2767 goto emit_tls_relocs;
2768 }
2769
2770 if (htab->sgot == NULL)
2771 abort ();
2772
2773 BFD_ASSERT (! unresolved_reloc);
2774 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2775 htab->sgot->contents + off);
2776 relocation = htab->sgot->output_offset + off;
2777 if (r_type == R_390_TLS_IEENT)
2778 relocation += htab->sgot->output_section->vma;
2779 unresolved_reloc = FALSE;
2780 break;
2781
2782 case R_390_TLS_LDM64:
2783 if (! info->shared)
2784 /* The literal pool entry this relocation refers to gets ignored
2785 by the optimized code of the local exec model. Do nothing
2786 and the value will turn out zero. */
2787 continue;
2788
2789 if (htab->sgot == NULL)
2790 abort ();
2791
2792 off = htab->tls_ldm_got.offset;
2793 if (off & 1)
2794 off &= ~1;
2795 else
2796 {
2797 Elf_Internal_Rela outrel;
2798 bfd_byte *loc;
2799
2800 if (htab->srelgot == NULL)
2801 abort ();
2802
2803 outrel.r_offset = (htab->sgot->output_section->vma
2804 + htab->sgot->output_offset + off);
2805
2806 bfd_put_64 (output_bfd, 0,
2807 htab->sgot->contents + off + GOT_ENTRY_SIZE);
2808 outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
2809 outrel.r_addend = 0;
2810 loc = htab->srelgot->contents;
2811 loc += htab->srelgot->reloc_count++
2812 * sizeof (Elf64_External_Rela);
2813 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2814 htab->tls_ldm_got.offset |= 1;
2815 }
2816 relocation = htab->sgot->output_offset + off;
26e41594 2817 unresolved_reloc = FALSE;
69fc87f1
MS		 2818 break;
2819
2820 case R_390_TLS_LE64:
2821 if (info->shared)
2822 {
2823 /* Linking a shared library with non-fpic code requires
2824 a R_390_TLS_TPOFF relocation. */
2825 Elf_Internal_Rela outrel;
2826 asection *sreloc;
2827 bfd_byte *loc;
2828 int indx;
2829
2830 outrel.r_offset = rel->r_offset
2831 + input_section->output_section->vma
2832 + input_section->output_offset;
2833 if (h != NULL && h->dynindx != -1)
2834 indx = h->dynindx;
2835 else
2836 indx = 0;
2837 outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
2838 if (indx == 0)
2839 outrel.r_addend = relocation - dtpoff_base (info);
2840 else
2841 outrel.r_addend = 0;
2842 sreloc = elf_section_data (input_section)->sreloc;
2843 if (sreloc == NULL)
2844 abort ();
2845 loc = sreloc->contents;
2846 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2847 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2848 }
2849 else
2850 {
2851 BFD_ASSERT (! unresolved_reloc);
2852 bfd_put_64 (output_bfd, -tpoff (info, relocation),
2853 contents + rel->r_offset);
2854 }
2855 continue;
2856
2857 case R_390_TLS_LDO64:
36c10a8f 2858 if (info->shared)
69fc87f1
MS		 2859 relocation -= dtpoff_base (info);
2860 else
2861 /* When converting LDO to LE, we must negate. */
2862 relocation = -tpoff (info, relocation);
2863 break;
2864
2865 /* Relocations for tls instructions. */
2866 case R_390_TLS_LOAD:
2867 case R_390_TLS_GDCALL:
2868 case R_390_TLS_LDCALL:
2869 tls_type = GOT_UNKNOWN;
2870 if (h == NULL && local_got_offsets)
2871 tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2872 else if (h != NULL)
2873 tls_type = elf_s390_hash_entry(h)->tls_type;
2874
2875 if (tls_type == GOT_TLS_GD)
2876 continue;
2877
2878 if (r_type == R_390_TLS_LOAD)
2879 {
2880 if (!info->shared && (h == NULL || h->dynindx == -1))
2881 {
2882 /* IE->LE transition. Four valid cases:
2883 lg %rx,(0,%ry) -> sllg %rx,%ry,0
2884 lg %rx,(%ry,0) -> sllg %rx,%ry,0
2885 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
2886 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
2887 unsigned int insn0, insn1, ry;
2888
2889 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
2890 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
2891 if (insn1 != 0x0004)
2892 invalid_tls_insn (input_bfd, input_section, rel);
2893 ry = 0;
2894 if ((insn0 & 0xff00f000) == 0xe3000000)
2895 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
2896 ry = (insn0 & 0x000f0000);
2897 else if ((insn0 & 0xff0f0000) == 0xe3000000)
2898 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
2899 ry = (insn0 & 0x0000f000) << 4;
2900 else if ((insn0 & 0xff00f000) == 0xe300c000)
2901 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
2902 ry = (insn0 & 0x000f0000);
2903 else if ((insn0 & 0xff0f0000) == 0xe30c0000)
2904 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
2905 ry = (insn0 & 0x0000f000) << 4;
2906 else
2907 invalid_tls_insn (input_bfd, input_section, rel);
2908 insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
2909 insn1 = 0x000d;
2910 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
2911 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
2912 }
2913 }
2914 else if (r_type == R_390_TLS_GDCALL)
2915 {
2916 unsigned int insn0, insn1;
2917
2918 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
2919 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
2920 if ((insn0 & 0xffff0000) != 0xc0e50000)
2921 invalid_tls_insn (input_bfd, input_section, rel);
2922 if (!info->shared && (h == NULL || h->dynindx == -1))
2923 {
2924 /* GD->LE transition.
2925 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
2926 insn0 = 0xc0040000;
2927 insn1 = 0x0000;
2928 }
2929 else
2930 {
2931 /* GD->IE transition.
2932 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
2933 insn0 = 0xe322c000;
2934 insn1 = 0x0004;
2935 }
2936 bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
2937 bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
2938 }
2939 else if (r_type == R_390_TLS_LDCALL)
2940 {
2941 if (!info->shared)
2942 {
2943 unsigned int insn0, insn1;
2944
2945 insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
2946 insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
2947 if ((insn0 & 0xffff0000) != 0xc0e50000)
2948 invalid_tls_insn (input_bfd, input_section, rel);
2949 /* LD->LE transition.
2950 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
2951 insn0 = 0xc0040000;
2952 insn1 = 0x0000;
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 }
2957 continue;
2958
947216bf
AM		 2959 default:
2960 break;
2961 }
a85d7ed0 2962
239e1f3a
AM		 2963 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
2964 because such sections are not SEC_ALLOC and thus ld.so will
2965 not process them. */
0451c93c 2966 if (unresolved_reloc
239e1f3a 2967 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 2968 && h->def_dynamic))
0451c93c 2969 (*_bfd_error_handler)
843fe662 2970 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 2971 input_bfd,
2972 input_section,
0451c93c 2973 (long) rel->r_offset,
843fe662 2974 howto->name,
0451c93c
MS		 2975 h->root.root.string);
2976
bd1ea41b
MS		 2977 if (r_type == R_390_20
2978 || r_type == R_390_GOT20
2979 || r_type == R_390_GOTPLT20
2980 || r_type == R_390_TLS_GOTIE20)
2981 {
2982 relocation += rel->r_addend;
2983 relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
2984 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2985 contents, rel->r_offset,
2986 relocation, 0);
2987 }
2988 else
2989 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
a85d7ed0
NC		 2990 contents, rel->r_offset,
2991 relocation, rel->r_addend);
2992
2993 if (r != bfd_reloc_ok)
2994 {
0451c93c 2995 const char *name;
ec338859 2996
0451c93c
MS		 2997 if (h != NULL)
2998 name = h->root.root.string;
2999 else
a85d7ed0 3000 {
0451c93c
MS		 3001 name = bfd_elf_string_from_elf_section (input_bfd,
3002 symtab_hdr->sh_link,
3003 sym->st_name);
3004 if (name == NULL)
b34976b6 3005 return FALSE;
0451c93c
MS		 3006 if (*name == '\0')
3007 name = bfd_section_name (input_bfd, sec);
3008 }
ec338859 3009
0451c93c
MS		 3010 if (r == bfd_reloc_overflow)
3011 {
ec338859 3012
0451c93c 3013 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 3014 (info, (h ? &h->root : NULL), name, howto->name,
3015 (bfd_vma) 0, input_bfd, input_section,
3016 rel->r_offset)))
b34976b6 3017 return FALSE;
0451c93c
MS		 3018 }
3019 else
3020 {
3021 (*_bfd_error_handler)
d003868e
AM		 3022 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3023 input_bfd, input_section,
0451c93c 3024 (long) rel->r_offset, name, (int) r);
b34976b6 3025 return FALSE;
a85d7ed0
NC		 3026 }
3027 }
3028 }
3029
b34976b6 3030 return TRUE;
a85d7ed0
NC		 3031}
3032
3033/* Finish up dynamic symbol handling. We set the contents of various
3034 dynamic sections here. */
3035
b34976b6 3036static bfd_boolean
a85d7ed0
NC		 3037elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym)
3038 bfd *output_bfd;
3039 struct bfd_link_info *info;
3040 struct elf_link_hash_entry *h;
3041 Elf_Internal_Sym *sym;
3042{
0451c93c 3043 struct elf_s390_link_hash_table *htab;
a85d7ed0 3044
0451c93c 3045 htab = elf_s390_hash_table (info);
a85d7ed0
NC		 3046
3047 if (h->plt.offset != (bfd_vma) -1)
3048 {
a85d7ed0 3049 bfd_vma plt_index;
0451c93c
MS		 3050 bfd_vma got_offset;
3051 Elf_Internal_Rela rela;
947216bf 3052 bfd_byte *loc;
a85d7ed0
NC		 3053
3054 /* This symbol has an entry in the procedure linkage table. Set
947216bf 3055 it up. */
a85d7ed0 3056
0451c93c
MS		 3057 if (h->dynindx == -1
3058 || htab->splt == NULL
3059 || htab->sgotplt == NULL
3060 || htab->srelplt == NULL)
3061 abort ();
a85d7ed0 3062
99c79b2e 3063 /* Calc. index no.
947216bf 3064 Current offset - size first entry / entry size. */
a85d7ed0
NC		 3065 plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3066
3067 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
947216bf 3068 addr & GOT addr. */
a85d7ed0
NC		 3069 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3070
3071 /* Fill in the blueprint of a PLT. */
0451c93c
MS		 3072 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD0,
3073 htab->splt->contents + h->plt.offset);
3074 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD1,
3075 htab->splt->contents + h->plt.offset + 4);
3076 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3077 htab->splt->contents + h->plt.offset + 8);
3078 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
3079 htab->splt->contents + h->plt.offset + 12);
3080 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD4,
3081 htab->splt->contents + h->plt.offset + 16);
3082 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD5,
3083 htab->splt->contents + h->plt.offset + 20);
3084 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD6,
3085 htab->splt->contents + h->plt.offset + 24);
3086 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD7,
3087 htab->splt->contents + h->plt.offset + 28);
a85d7ed0
NC		 3088 /* Fixup the relative address to the GOT entry */
3089 bfd_put_32 (output_bfd,
0451c93c
MS		 3090 (htab->sgotplt->output_section->vma +
3091 htab->sgotplt->output_offset + got_offset
3092 - (htab->splt->output_section->vma + h->plt.offset))/2,
3093 htab->splt->contents + h->plt.offset + 2);
a85d7ed0
NC		 3094 /* Fixup the relative branch to PLT 0 */
3095 bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3096 (PLT_ENTRY_SIZE * plt_index) + 22)/2,
0451c93c 3097 htab->splt->contents + h->plt.offset + 24);
a85d7ed0
NC		 3098 /* Fixup offset into symbol table */
3099 bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
0451c93c 3100 htab->splt->contents + h->plt.offset + 28);
a85d7ed0
NC		 3101
3102 /* Fill in the entry in the global offset table.
947216bf 3103 Points to instruction after GOT offset. */
a85d7ed0 3104 bfd_put_64 (output_bfd,
0451c93c
MS		 3105 (htab->splt->output_section->vma
3106 + htab->splt->output_offset
a85d7ed0
NC		 3107 + h->plt.offset
3108 + 14),
0451c93c 3109 htab->sgotplt->contents + got_offset);
a85d7ed0 3110
0451c93c
MS		 3111 /* Fill in the entry in the .rela.plt section. */
3112 rela.r_offset = (htab->sgotplt->output_section->vma
3113 + htab->sgotplt->output_offset
3114 + got_offset);
3115 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3116 rela.r_addend = 0;
947216bf 3117 loc = htab->srelplt->contents + plt_index * sizeof (Elf64_External_Rela);
0451c93c 3118 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0 3119
f5385ebf 3120 if (!h->def_regular)
a85d7ed0
NC		 3121 {
3122 /* Mark the symbol as undefined, rather than as defined in
0451c93c
MS		 3123 the .plt section. Leave the value alone. This is a clue
3124 for the dynamic linker, to make function pointer
3125 comparisons work between an application and shared
3126 library. */
a85d7ed0
NC		 3127 sym->st_shndx = SHN_UNDEF;
3128 }
3129 }
3130
69fc87f1
MS		 3131 if (h->got.offset != (bfd_vma) -1
3132 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3133 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3134 && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
a85d7ed0 3135 {
a85d7ed0 3136 Elf_Internal_Rela rela;
947216bf 3137 bfd_byte *loc;
a85d7ed0
NC		 3138
3139 /* This symbol has an entry in the global offset table. Set it
947216bf 3140 up. */
0451c93c
MS		 3141 if (htab->sgot == NULL || htab->srelgot == NULL)
3142 abort ();
a85d7ed0 3143
0451c93c
MS		 3144 rela.r_offset = (htab->sgot->output_section->vma
3145 + htab->sgot->output_offset
dc810e39 3146 + (h->got.offset &~ (bfd_vma) 1));
a85d7ed0
NC		 3147
3148 /* If this is a static link, or it is a -Bsymbolic link and the
3149 symbol is defined locally or was forced to be local because
3150 of a version file, we just want to emit a RELATIVE reloc.
3151 The entry in the global offset table will already have been
3152 initialized in the relocate_section function. */
0451c93c 3153 if (info->shared
8c21ca21 3154 && SYMBOL_REFERENCES_LOCAL (info, h))
947216bf 3155 {
8c21ca21
AK		 3156 if (!h->def_regular)
3157 return FALSE;
0451c93c 3158 BFD_ASSERT((h->got.offset & 1) != 0);
947216bf
AM		 3159 rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3160 rela.r_addend = (h->root.u.def.value
3161 + h->root.u.def.section->output_section->vma
3162 + h->root.u.def.section->output_offset);
3163 }
a85d7ed0
NC		 3164 else
3165 {
3166 BFD_ASSERT((h->got.offset & 1) == 0);
0451c93c 3167 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgot->contents + h->got.offset);
a85d7ed0 3168 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
947216bf
AM		 3169 rela.r_addend = 0;
3170 }
a85d7ed0 3171
947216bf
AM		 3172 loc = htab->srelgot->contents;
3173 loc += htab->srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3174 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3175 }
3176
f5385ebf 3177 if (h->needs_copy)
a85d7ed0 3178 {
a85d7ed0 3179 Elf_Internal_Rela rela;
947216bf 3180 bfd_byte *loc;
a85d7ed0
NC		 3181
3182 /* This symbols needs a copy reloc. Set it up. */
3183
0451c93c
MS		 3184 if (h->dynindx == -1
3185 || (h->root.type != bfd_link_hash_defined
3186 && h->root.type != bfd_link_hash_defweak)
3187 || htab->srelbss == NULL)
3188 abort ();
a85d7ed0
NC		 3189
3190 rela.r_offset = (h->root.u.def.value
3191 + h->root.u.def.section->output_section->vma
3192 + h->root.u.def.section->output_offset);
3193 rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3194 rela.r_addend = 0;
947216bf
AM		 3195 loc = htab->srelbss->contents;
3196 loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
0451c93c 3197 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a85d7ed0
NC		 3198 }
3199
3200 /* Mark some specially defined symbols as absolute. */
3201 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
22edb2f1
RS		 3202 || h == htab->elf.hgot
3203 || h == htab->elf.hplt)
a85d7ed0
NC		 3204 sym->st_shndx = SHN_ABS;
3205
b34976b6 3206 return TRUE;
a85d7ed0
NC		 3207}
3208
0451c93c
MS		 3209/* Used to decide how to sort relocs in an optimal manner for the
3210 dynamic linker, before writing them out. */
3211
3212static enum elf_reloc_type_class
3213elf_s390_reloc_type_class (rela)
3214 const Elf_Internal_Rela *rela;
3215{
3216 switch ((int) ELF64_R_TYPE (rela->r_info))
3217 {
3218 case R_390_RELATIVE:
3219 return reloc_class_relative;
3220 case R_390_JMP_SLOT:
3221 return reloc_class_plt;
3222 case R_390_COPY:
3223 return reloc_class_copy;
3224 default:
3225 return reloc_class_normal;
3226 }
3227}
3228
a85d7ed0
NC		 3229/* Finish up the dynamic sections. */
3230
b34976b6 3231static bfd_boolean
a85d7ed0
NC		 3232elf_s390_finish_dynamic_sections (output_bfd, info)
3233 bfd *output_bfd;
3234 struct bfd_link_info *info;
3235{
0451c93c 3236 struct elf_s390_link_hash_table *htab;
a85d7ed0
NC		 3237 bfd *dynobj;
3238 asection *sdyn;
a85d7ed0 3239
0451c93c
MS		 3240 htab = elf_s390_hash_table (info);
3241 dynobj = htab->elf.dynobj;
a85d7ed0
NC		 3242 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3243
0451c93c 3244 if (htab->elf.dynamic_sections_created)
a85d7ed0 3245 {
a85d7ed0
NC		 3246 Elf64_External_Dyn *dyncon, *dynconend;
3247
0451c93c
MS		 3248 if (sdyn == NULL || htab->sgot == NULL)
3249 abort ();
a85d7ed0
NC		 3250
3251 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 3252 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
a85d7ed0
NC		 3253 for (; dyncon < dynconend; dyncon++)
3254 {
3255 Elf_Internal_Dyn dyn;
a85d7ed0 3256 asection *s;
ec338859 3257
a85d7ed0 3258 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
ec338859 3259
a85d7ed0
NC		 3260 switch (dyn.d_tag)
3261 {
3262 default:
0451c93c 3263 continue;
ec338859 3264
a85d7ed0 3265 case DT_PLTGOT:
0451c93c
MS		 3266 dyn.d_un.d_ptr = htab->sgot->output_section->vma;
3267 break;
ec338859 3268
a85d7ed0 3269 case DT_JMPREL:
0451c93c 3270 dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
a85d7ed0 3271 break;
ec338859 3272
a85d7ed0 3273 case DT_PLTRELSZ:
0451c93c 3274 s = htab->srelplt->output_section;
eea6121a 3275 dyn.d_un.d_val = s->size;
a85d7ed0 3276 break;
ec338859 3277
a85d7ed0
NC		 3278 case DT_RELASZ:
3279 /* The procedure linkage table relocs (DT_JMPREL) should
3280 not be included in the overall relocs (DT_RELA).
3281 Therefore, we override the DT_RELASZ entry here to
3282 make it not include the JMPREL relocs. Since the
3283 linker script arranges for .rela.plt to follow all
3284 other relocation sections, we don't have to worry
3285 about changing the DT_RELA entry. */
0451c93c 3286 s = htab->srelplt->output_section;
eea6121a 3287 dyn.d_un.d_val -= s->size;
a85d7ed0
NC		 3288 break;
3289 }
0451c93c
MS		 3290
3291 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
a85d7ed0
NC		 3292 }
3293
3294 /* Fill in the special first entry in the procedure linkage table. */
eea6121a 3295 if (htab->splt && htab->splt->size > 0)
a85d7ed0
NC		 3296 {
3297 /* fill in blueprint for plt 0 entry */
0451c93c
MS		 3298 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD0,
3299 htab->splt->contents );
3300 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD1,
3301 htab->splt->contents +4 );
3302 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD3,
3303 htab->splt->contents +12 );
3304 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD4,
3305 htab->splt->contents +16 );
3306 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD5,
3307 htab->splt->contents +20 );
3308 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD6,
3309 htab->splt->contents + 24);
3310 bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD7,
3311 htab->splt->contents + 28 );
a85d7ed0
NC		 3312 /* Fixup relative address to start of GOT */
3313 bfd_put_32 (output_bfd,
0451c93c
MS		 3314 (htab->sgotplt->output_section->vma +
3315 htab->sgotplt->output_offset
3316 - htab->splt->output_section->vma - 6)/2,
3317 htab->splt->contents + 8);
a85d7ed0 3318 }
0451c93c
MS		 3319 elf_section_data (htab->splt->output_section)
3320 ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
a85d7ed0
NC		 3321 }
3322
0451c93c 3323 if (htab->sgotplt)
a85d7ed0 3324 {
0451c93c 3325 /* Fill in the first three entries in the global offset table. */
eea6121a 3326 if (htab->sgotplt->size > 0)
0451c93c
MS		 3327 {
3328 bfd_put_64 (output_bfd,
3329 (sdyn == NULL ? (bfd_vma) 0
3330 : sdyn->output_section->vma + sdyn->output_offset),
3331 htab->sgotplt->contents);
3332 /* One entry for shared object struct ptr. */
3333 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
3334 /* One entry for _dl_runtime_resolve. */
3335 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 12);
3336 }
a85d7ed0 3337
0451c93c
MS		 3338 elf_section_data (htab->sgot->output_section)
3339 ->this_hdr.sh_entsize = 8;
3340 }
b34976b6 3341 return TRUE;
a85d7ed0
NC		 3342}
3343
4c45e5c9
JJ		 3344/* Return address for Ith PLT stub in section PLT, for relocation REL
3345 or (bfd_vma) -1 if it should not be included. */
3346
3347static bfd_vma
3348elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3349 const arelent *rel ATTRIBUTE_UNUSED)
3350{
3351 return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3352}
3353
3354
ae9a127f
NC		 3355/* Why was the hash table entry size definition changed from
3356 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3357 this is the only reason for the s390_elf64_size_info structure. */
a85d7ed0
NC		 3358
3359const struct elf_size_info s390_elf64_size_info =
3360{
3361 sizeof (Elf64_External_Ehdr),
3362 sizeof (Elf64_External_Phdr),
3363 sizeof (Elf64_External_Shdr),
3364 sizeof (Elf64_External_Rel),
3365 sizeof (Elf64_External_Rela),
3366 sizeof (Elf64_External_Sym),
3367 sizeof (Elf64_External_Dyn),
3368 sizeof (Elf_External_Note),
ae9a127f
NC		 3369 8, /* hash-table entry size. */
3370 1, /* internal relocations per external relocations. */
3371 64, /* arch_size. */
45d6a902 3372 3, /* log_file_align. */
a85d7ed0
NC		 3373 ELFCLASS64, EV_CURRENT,
3374 bfd_elf64_write_out_phdrs,
3375 bfd_elf64_write_shdrs_and_ehdr,
1489a3a0 3376 bfd_elf64_checksum_contents,
a85d7ed0 3377 bfd_elf64_write_relocs,
73ff0d56 3378 bfd_elf64_swap_symbol_in,
a85d7ed0
NC		 3379 bfd_elf64_swap_symbol_out,
3380 bfd_elf64_slurp_reloc_table,
3381 bfd_elf64_slurp_symbol_table,
3382 bfd_elf64_swap_dyn_in,
3383 bfd_elf64_swap_dyn_out,
947216bf
AM		 3384 bfd_elf64_swap_reloc_in,
3385 bfd_elf64_swap_reloc_out,
3386 bfd_elf64_swap_reloca_in,
3387 bfd_elf64_swap_reloca_out
a85d7ed0
NC		 3388};
3389
3390#define TARGET_BIG_SYM bfd_elf64_s390_vec
3391#define TARGET_BIG_NAME "elf64-s390"
3392#define ELF_ARCH bfd_arch_s390
3393#define ELF_MACHINE_CODE EM_S390
3394#define ELF_MACHINE_ALT1 EM_S390_OLD
3395#define ELF_MAXPAGESIZE 0x1000
3396
3397#define elf_backend_size_info s390_elf64_size_info
3398
3399#define elf_backend_can_gc_sections 1
51b64d56 3400#define elf_backend_can_refcount 1
a85d7ed0
NC		 3401#define elf_backend_want_got_plt 1
3402#define elf_backend_plt_readonly 1
3403#define elf_backend_want_plt_sym 0
3404#define elf_backend_got_header_size 24
b491616a 3405#define elf_backend_rela_normal 1
a85d7ed0
NC		 3406
3407#define elf_info_to_howto elf_s390_info_to_howto
3408
a85d7ed0
NC		 3409#define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3410#define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3411#define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
157090f7 3412#define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
a85d7ed0
NC		 3413
3414#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3415#define elf_backend_check_relocs elf_s390_check_relocs
0451c93c
MS		 3416#define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3417#define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
a85d7ed0
NC		 3418#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3419#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3420#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3421#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
0451c93c 3422#define elf_backend_reloc_type_class elf_s390_reloc_type_class
a85d7ed0
NC		 3423#define elf_backend_relocate_section elf_s390_relocate_section
3424#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
74541ad4 3425#define elf_backend_init_index_section _bfd_elf_init_1_index_section
29c2fb7c 3426#define elf_backend_reloc_type_class elf_s390_reloc_type_class
4c45e5c9 3427#define elf_backend_plt_sym_val elf_s390_plt_sym_val
a85d7ed0 3428
69fc87f1
MS		 3429#define bfd_elf64_mkobject elf_s390_mkobject
3430#define elf_backend_object_p elf_s390_object_p
a85d7ed0
NC		 3431
3432#include "elf64-target.h"
GDB Binutils - Deliverables
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