1 /* IBM S/390-specific support for 64-bit ELF
2 Copyright 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
3 Contributed Martin Schwidefsky (schwidefsky@de.ibm.com).
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
28 static reloc_howto_type
*elf_s390_reloc_type_lookup
29 PARAMS ((bfd
*, bfd_reloc_code_real_type
));
30 static void elf_s390_info_to_howto
31 PARAMS ((bfd
*, arelent
*, Elf_Internal_Rela
*));
32 static bfd_boolean elf_s390_is_local_label_name
33 PARAMS ((bfd
*, const char *));
34 static struct bfd_hash_entry
*link_hash_newfunc
35 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
36 static struct bfd_link_hash_table
*elf_s390_link_hash_table_create
38 static bfd_boolean create_got_section
39 PARAMS((bfd
*, struct bfd_link_info
*));
40 static bfd_boolean elf_s390_create_dynamic_sections
41 PARAMS((bfd
*, struct bfd_link_info
*));
42 static void elf_s390_copy_indirect_symbol
43 PARAMS ((struct elf_backend_data
*, struct elf_link_hash_entry
*,
44 struct elf_link_hash_entry
*));
45 static bfd_boolean elf_s390_check_relocs
46 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
47 const Elf_Internal_Rela
*));
48 static asection
*elf_s390_gc_mark_hook
49 PARAMS ((asection
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
50 struct elf_link_hash_entry
*, Elf_Internal_Sym
*));
51 static bfd_boolean elf_s390_gc_sweep_hook
52 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
53 const Elf_Internal_Rela
*));
54 struct elf_s390_link_hash_entry
;
55 static void elf_s390_adjust_gotplt
56 PARAMS ((struct elf_s390_link_hash_entry
*));
57 static bfd_boolean elf_s390_adjust_dynamic_symbol
58 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
59 static bfd_boolean allocate_dynrelocs
60 PARAMS ((struct elf_link_hash_entry
*, PTR
));
61 static bfd_boolean readonly_dynrelocs
62 PARAMS ((struct elf_link_hash_entry
*, PTR
));
63 static bfd_boolean elf_s390_size_dynamic_sections
64 PARAMS ((bfd
*, struct bfd_link_info
*));
65 static bfd_boolean elf_s390_relocate_section
66 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
67 Elf_Internal_Rela
*, Elf_Internal_Sym
*, asection
**));
68 static bfd_boolean elf_s390_finish_dynamic_symbol
69 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*,
71 static enum elf_reloc_type_class elf_s390_reloc_type_class
72 PARAMS ((const Elf_Internal_Rela
*));
73 static bfd_boolean elf_s390_finish_dynamic_sections
74 PARAMS ((bfd
*, struct bfd_link_info
*));
75 static bfd_boolean elf_s390_mkobject
77 static bfd_boolean elf_s390_object_p
79 static int elf_s390_tls_transition
80 PARAMS ((struct bfd_link_info
*, int, int));
81 static bfd_reloc_status_type s390_tls_reloc
82 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
83 static bfd_vma dtpoff_base
84 PARAMS ((struct bfd_link_info
*));
86 PARAMS ((struct bfd_link_info
*, bfd_vma
));
87 static void invalid_tls_insn
88 PARAMS ((bfd
*, asection
*, Elf_Internal_Rela
*));
92 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
93 from smaller values. Start with zero, widen, *then* decrement. */
94 #define MINUS_ONE (((bfd_vma)0) - 1)
96 /* The relocation "howto" table. */
97 static reloc_howto_type elf_howto_table
[] =
99 HOWTO (R_390_NONE
, /* type */
101 0, /* size (0 = byte, 1 = short, 2 = long) */
103 FALSE
, /* pc_relative */
105 complain_overflow_dont
, /* complain_on_overflow */
106 bfd_elf_generic_reloc
, /* special_function */
107 "R_390_NONE", /* name */
108 FALSE
, /* partial_inplace */
111 FALSE
), /* pcrel_offset */
113 HOWTO(R_390_8
, 0, 0, 8, FALSE
, 0, complain_overflow_bitfield
,
114 bfd_elf_generic_reloc
, "R_390_8", FALSE
, 0,0x000000ff, FALSE
),
115 HOWTO(R_390_12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
116 bfd_elf_generic_reloc
, "R_390_12", FALSE
, 0,0x00000fff, FALSE
),
117 HOWTO(R_390_16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
118 bfd_elf_generic_reloc
, "R_390_16", FALSE
, 0,0x0000ffff, FALSE
),
119 HOWTO(R_390_32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
120 bfd_elf_generic_reloc
, "R_390_32", FALSE
, 0,0xffffffff, FALSE
),
121 HOWTO(R_390_PC32
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
122 bfd_elf_generic_reloc
, "R_390_PC32", FALSE
, 0,0xffffffff, TRUE
),
123 HOWTO(R_390_GOT12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
124 bfd_elf_generic_reloc
, "R_390_GOT12", FALSE
, 0,0x00000fff, FALSE
),
125 HOWTO(R_390_GOT32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
126 bfd_elf_generic_reloc
, "R_390_GOT32", FALSE
, 0,0xffffffff, FALSE
),
127 HOWTO(R_390_PLT32
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
128 bfd_elf_generic_reloc
, "R_390_PLT32", FALSE
, 0,0xffffffff, TRUE
),
129 HOWTO(R_390_COPY
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
130 bfd_elf_generic_reloc
, "R_390_COPY", FALSE
, 0,MINUS_ONE
, FALSE
),
131 HOWTO(R_390_GLOB_DAT
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
132 bfd_elf_generic_reloc
, "R_390_GLOB_DAT", FALSE
, 0,MINUS_ONE
, FALSE
),
133 HOWTO(R_390_JMP_SLOT
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
134 bfd_elf_generic_reloc
, "R_390_JMP_SLOT", FALSE
, 0,MINUS_ONE
, FALSE
),
135 HOWTO(R_390_RELATIVE
, 0, 4, 64, TRUE
, 0, complain_overflow_bitfield
,
136 bfd_elf_generic_reloc
, "R_390_RELATIVE", FALSE
, 0,MINUS_ONE
, FALSE
),
137 HOWTO(R_390_GOTOFF32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
138 bfd_elf_generic_reloc
, "R_390_GOTOFF32", FALSE
, 0,MINUS_ONE
, FALSE
),
139 HOWTO(R_390_GOTPC
, 0, 4, 64, TRUE
, 0, complain_overflow_bitfield
,
140 bfd_elf_generic_reloc
, "R_390_GOTPC", FALSE
, 0,MINUS_ONE
, TRUE
),
141 HOWTO(R_390_GOT16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
142 bfd_elf_generic_reloc
, "R_390_GOT16", FALSE
, 0,0x0000ffff, FALSE
),
143 HOWTO(R_390_PC16
, 0, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
144 bfd_elf_generic_reloc
, "R_390_PC16", FALSE
, 0,0x0000ffff, TRUE
),
145 HOWTO(R_390_PC16DBL
, 1, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
146 bfd_elf_generic_reloc
, "R_390_PC16DBL", FALSE
, 0,0x0000ffff, TRUE
),
147 HOWTO(R_390_PLT16DBL
, 1, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
148 bfd_elf_generic_reloc
, "R_390_PLT16DBL", FALSE
, 0,0x0000ffff, TRUE
),
149 HOWTO(R_390_PC32DBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
150 bfd_elf_generic_reloc
, "R_390_PC32DBL", FALSE
, 0,0xffffffff, TRUE
),
151 HOWTO(R_390_PLT32DBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
152 bfd_elf_generic_reloc
, "R_390_PLT32DBL", FALSE
, 0,0xffffffff, TRUE
),
153 HOWTO(R_390_GOTPCDBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
154 bfd_elf_generic_reloc
, "R_390_GOTPCDBL", FALSE
, 0,MINUS_ONE
, TRUE
),
155 HOWTO(R_390_64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
156 bfd_elf_generic_reloc
, "R_390_64", FALSE
, 0,MINUS_ONE
, FALSE
),
157 HOWTO(R_390_PC64
, 0, 4, 64, TRUE
, 0, complain_overflow_bitfield
,
158 bfd_elf_generic_reloc
, "R_390_PC64", FALSE
, 0,MINUS_ONE
, TRUE
),
159 HOWTO(R_390_GOT64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
160 bfd_elf_generic_reloc
, "R_390_GOT64", FALSE
, 0,MINUS_ONE
, FALSE
),
161 HOWTO(R_390_PLT64
, 0, 4, 64, TRUE
, 0, complain_overflow_bitfield
,
162 bfd_elf_generic_reloc
, "R_390_PLT64", FALSE
, 0,MINUS_ONE
, TRUE
),
163 HOWTO(R_390_GOTENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
164 bfd_elf_generic_reloc
, "R_390_GOTENT", FALSE
, 0,MINUS_ONE
, TRUE
),
165 HOWTO(R_390_GOTOFF16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
166 bfd_elf_generic_reloc
, "R_390_GOTOFF16", FALSE
, 0,0x0000ffff, FALSE
),
167 HOWTO(R_390_GOTOFF64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
168 bfd_elf_generic_reloc
, "R_390_GOTOFF64", FALSE
, 0,MINUS_ONE
, FALSE
),
169 HOWTO(R_390_GOTPLT12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
170 bfd_elf_generic_reloc
, "R_390_GOTPLT12", FALSE
, 0,0x00000fff, FALSE
),
171 HOWTO(R_390_GOTPLT16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
172 bfd_elf_generic_reloc
, "R_390_GOTPLT16", FALSE
, 0,0x0000ffff, FALSE
),
173 HOWTO(R_390_GOTPLT32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
174 bfd_elf_generic_reloc
, "R_390_GOTPLT32", FALSE
, 0,0xffffffff, FALSE
),
175 HOWTO(R_390_GOTPLT64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
176 bfd_elf_generic_reloc
, "R_390_GOTPLT64", FALSE
, 0,MINUS_ONE
, FALSE
),
177 HOWTO(R_390_GOTPLTENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
178 bfd_elf_generic_reloc
, "R_390_GOTPLTENT",FALSE
, 0,MINUS_ONE
, TRUE
),
179 HOWTO(R_390_PLTOFF16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
180 bfd_elf_generic_reloc
, "R_390_PLTOFF16", FALSE
, 0,0x0000ffff, FALSE
),
181 HOWTO(R_390_PLTOFF32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
182 bfd_elf_generic_reloc
, "R_390_PLTOFF32", FALSE
, 0,0xffffffff, FALSE
),
183 HOWTO(R_390_PLTOFF64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
184 bfd_elf_generic_reloc
, "R_390_PLTOFF64", FALSE
, 0,MINUS_ONE
, FALSE
),
185 HOWTO(R_390_TLS_LOAD
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
186 s390_tls_reloc
, "R_390_TLS_LOAD", FALSE
, 0, 0, FALSE
),
187 HOWTO(R_390_TLS_GDCALL
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
188 s390_tls_reloc
, "R_390_TLS_GDCALL", FALSE
, 0, 0, FALSE
),
189 HOWTO(R_390_TLS_LDCALL
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
190 s390_tls_reloc
, "R_390_TLS_LDCALL", FALSE
, 0, 0, FALSE
),
191 EMPTY_HOWTO (R_390_TLS_GD32
), /* Empty entry for R_390_TLS_GD32. */
192 HOWTO(R_390_TLS_GD64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
193 bfd_elf_generic_reloc
, "R_390_TLS_GD64", FALSE
, 0, MINUS_ONE
, FALSE
),
194 HOWTO(R_390_TLS_GOTIE12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
195 bfd_elf_generic_reloc
, "R_390_TLS_GOTIE12", FALSE
, 0, 0x00000fff, FALSE
),
196 EMPTY_HOWTO (R_390_TLS_GOTIE32
), /* Empty entry for R_390_TLS_GOTIE32. */
197 HOWTO(R_390_TLS_GOTIE64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
198 bfd_elf_generic_reloc
, "R_390_TLS_GOTIE64", FALSE
, 0, MINUS_ONE
, FALSE
),
199 EMPTY_HOWTO (R_390_TLS_LDM32
), /* Empty entry for R_390_TLS_LDM32. */
200 HOWTO(R_390_TLS_LDM64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
201 bfd_elf_generic_reloc
, "R_390_TLS_LDM64", FALSE
, 0, MINUS_ONE
, FALSE
),
202 EMPTY_HOWTO (R_390_TLS_IE32
), /* Empty entry for R_390_TLS_IE32. */
203 HOWTO(R_390_TLS_IE64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
204 bfd_elf_generic_reloc
, "R_390_TLS_IE64", FALSE
, 0, MINUS_ONE
, FALSE
),
205 HOWTO(R_390_TLS_IEENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
206 bfd_elf_generic_reloc
, "R_390_TLS_IEENT", FALSE
, 0, MINUS_ONE
, TRUE
),
207 EMPTY_HOWTO (R_390_TLS_LE32
), /* Empty entry for R_390_TLS_LE32. */
208 HOWTO(R_390_TLS_LE64
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
209 bfd_elf_generic_reloc
, "R_390_TLS_LE64", FALSE
, 0, MINUS_ONE
, FALSE
),
210 EMPTY_HOWTO (R_390_TLS_LDO32
), /* Empty entry for R_390_TLS_LDO32. */
211 HOWTO(R_390_TLS_LDO64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
212 bfd_elf_generic_reloc
, "R_390_TLS_LDO64", FALSE
, 0, MINUS_ONE
, FALSE
),
213 HOWTO(R_390_TLS_DTPMOD
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
214 bfd_elf_generic_reloc
, "R_390_TLS_DTPMOD", FALSE
, 0, MINUS_ONE
, FALSE
),
215 HOWTO(R_390_TLS_DTPOFF
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
216 bfd_elf_generic_reloc
, "R_390_TLS_DTPOFF", FALSE
, 0, MINUS_ONE
, FALSE
),
217 HOWTO(R_390_TLS_TPOFF
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
218 bfd_elf_generic_reloc
, "R_390_TLS_TPOFF", FALSE
, 0, MINUS_ONE
, FALSE
),
221 /* GNU extension to record C++ vtable hierarchy. */
222 static reloc_howto_type elf64_s390_vtinherit_howto
=
223 HOWTO (R_390_GNU_VTINHERIT
, 0,4,0,FALSE
,0,complain_overflow_dont
, NULL
, "R_390_GNU_VTINHERIT", FALSE
,0, 0, FALSE
);
224 static reloc_howto_type elf64_s390_vtentry_howto
=
225 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
);
227 static reloc_howto_type
*
228 elf_s390_reloc_type_lookup (abfd
, code
)
229 bfd
*abfd ATTRIBUTE_UNUSED
;
230 bfd_reloc_code_real_type code
;
235 return &elf_howto_table
[(int) R_390_NONE
];
237 return &elf_howto_table
[(int) R_390_8
];
238 case BFD_RELOC_390_12
:
239 return &elf_howto_table
[(int) R_390_12
];
241 return &elf_howto_table
[(int) R_390_16
];
243 return &elf_howto_table
[(int) R_390_32
];
245 return &elf_howto_table
[(int) R_390_32
];
246 case BFD_RELOC_32_PCREL
:
247 return &elf_howto_table
[(int) R_390_PC32
];
248 case BFD_RELOC_390_GOT12
:
249 return &elf_howto_table
[(int) R_390_GOT12
];
250 case BFD_RELOC_32_GOT_PCREL
:
251 return &elf_howto_table
[(int) R_390_GOT32
];
252 case BFD_RELOC_390_PLT32
:
253 return &elf_howto_table
[(int) R_390_PLT32
];
254 case BFD_RELOC_390_COPY
:
255 return &elf_howto_table
[(int) R_390_COPY
];
256 case BFD_RELOC_390_GLOB_DAT
:
257 return &elf_howto_table
[(int) R_390_GLOB_DAT
];
258 case BFD_RELOC_390_JMP_SLOT
:
259 return &elf_howto_table
[(int) R_390_JMP_SLOT
];
260 case BFD_RELOC_390_RELATIVE
:
261 return &elf_howto_table
[(int) R_390_RELATIVE
];
262 case BFD_RELOC_32_GOTOFF
:
263 return &elf_howto_table
[(int) R_390_GOTOFF32
];
264 case BFD_RELOC_390_GOTPC
:
265 return &elf_howto_table
[(int) R_390_GOTPC
];
266 case BFD_RELOC_390_GOT16
:
267 return &elf_howto_table
[(int) R_390_GOT16
];
268 case BFD_RELOC_16_PCREL
:
269 return &elf_howto_table
[(int) R_390_PC16
];
270 case BFD_RELOC_390_PC16DBL
:
271 return &elf_howto_table
[(int) R_390_PC16DBL
];
272 case BFD_RELOC_390_PLT16DBL
:
273 return &elf_howto_table
[(int) R_390_PLT16DBL
];
274 case BFD_RELOC_390_PC32DBL
:
275 return &elf_howto_table
[(int) R_390_PC32DBL
];
276 case BFD_RELOC_390_PLT32DBL
:
277 return &elf_howto_table
[(int) R_390_PLT32DBL
];
278 case BFD_RELOC_390_GOTPCDBL
:
279 return &elf_howto_table
[(int) R_390_GOTPCDBL
];
281 return &elf_howto_table
[(int) R_390_64
];
282 case BFD_RELOC_64_PCREL
:
283 return &elf_howto_table
[(int) R_390_PC64
];
284 case BFD_RELOC_390_GOT64
:
285 return &elf_howto_table
[(int) R_390_GOT64
];
286 case BFD_RELOC_390_PLT64
:
287 return &elf_howto_table
[(int) R_390_PLT64
];
288 case BFD_RELOC_390_GOTENT
:
289 return &elf_howto_table
[(int) R_390_GOTENT
];
290 case BFD_RELOC_16_GOTOFF
:
291 return &elf_howto_table
[(int) R_390_GOTOFF16
];
292 case BFD_RELOC_390_GOTOFF64
:
293 return &elf_howto_table
[(int) R_390_GOTOFF64
];
294 case BFD_RELOC_390_GOTPLT12
:
295 return &elf_howto_table
[(int) R_390_GOTPLT12
];
296 case BFD_RELOC_390_GOTPLT16
:
297 return &elf_howto_table
[(int) R_390_GOTPLT16
];
298 case BFD_RELOC_390_GOTPLT32
:
299 return &elf_howto_table
[(int) R_390_GOTPLT32
];
300 case BFD_RELOC_390_GOTPLT64
:
301 return &elf_howto_table
[(int) R_390_GOTPLT64
];
302 case BFD_RELOC_390_GOTPLTENT
:
303 return &elf_howto_table
[(int) R_390_GOTPLTENT
];
304 case BFD_RELOC_390_PLTOFF16
:
305 return &elf_howto_table
[(int) R_390_PLTOFF16
];
306 case BFD_RELOC_390_PLTOFF32
:
307 return &elf_howto_table
[(int) R_390_PLTOFF32
];
308 case BFD_RELOC_390_PLTOFF64
:
309 return &elf_howto_table
[(int) R_390_PLTOFF64
];
310 case BFD_RELOC_390_TLS_LOAD
:
311 return &elf_howto_table
[(int) R_390_TLS_LOAD
];
312 case BFD_RELOC_390_TLS_GDCALL
:
313 return &elf_howto_table
[(int) R_390_TLS_GDCALL
];
314 case BFD_RELOC_390_TLS_LDCALL
:
315 return &elf_howto_table
[(int) R_390_TLS_LDCALL
];
316 case BFD_RELOC_390_TLS_GD64
:
317 return &elf_howto_table
[(int) R_390_TLS_GD64
];
318 case BFD_RELOC_390_TLS_GOTIE12
:
319 return &elf_howto_table
[(int) R_390_TLS_GOTIE12
];
320 case BFD_RELOC_390_TLS_GOTIE64
:
321 return &elf_howto_table
[(int) R_390_TLS_GOTIE64
];
322 case BFD_RELOC_390_TLS_LDM64
:
323 return &elf_howto_table
[(int) R_390_TLS_LDM64
];
324 case BFD_RELOC_390_TLS_IE64
:
325 return &elf_howto_table
[(int) R_390_TLS_IE64
];
326 case BFD_RELOC_390_TLS_IEENT
:
327 return &elf_howto_table
[(int) R_390_TLS_IEENT
];
328 case BFD_RELOC_390_TLS_LE64
:
329 return &elf_howto_table
[(int) R_390_TLS_LE64
];
330 case BFD_RELOC_390_TLS_LDO64
:
331 return &elf_howto_table
[(int) R_390_TLS_LDO64
];
332 case BFD_RELOC_390_TLS_DTPMOD
:
333 return &elf_howto_table
[(int) R_390_TLS_DTPMOD
];
334 case BFD_RELOC_390_TLS_DTPOFF
:
335 return &elf_howto_table
[(int) R_390_TLS_DTPOFF
];
336 case BFD_RELOC_390_TLS_TPOFF
:
337 return &elf_howto_table
[(int) R_390_TLS_TPOFF
];
338 case BFD_RELOC_VTABLE_INHERIT
:
339 return &elf64_s390_vtinherit_howto
;
340 case BFD_RELOC_VTABLE_ENTRY
:
341 return &elf64_s390_vtentry_howto
;
348 /* We need to use ELF64_R_TYPE so we have our own copy of this function,
349 and elf64-s390.c has its own copy. */
352 elf_s390_info_to_howto (abfd
, cache_ptr
, dst
)
353 bfd
*abfd ATTRIBUTE_UNUSED
;
355 Elf_Internal_Rela
*dst
;
357 switch (ELF64_R_TYPE(dst
->r_info
))
359 case R_390_GNU_VTINHERIT
:
360 cache_ptr
->howto
= &elf64_s390_vtinherit_howto
;
363 case R_390_GNU_VTENTRY
:
364 cache_ptr
->howto
= &elf64_s390_vtentry_howto
;
368 BFD_ASSERT (ELF64_R_TYPE(dst
->r_info
) < (unsigned int) R_390_max
);
369 cache_ptr
->howto
= &elf_howto_table
[ELF64_R_TYPE(dst
->r_info
)];
373 /* A relocation function which doesn't do anything. */
374 static bfd_reloc_status_type
375 s390_tls_reloc (abfd
, reloc_entry
, symbol
, data
, input_section
,
376 output_bfd
, error_message
)
377 bfd
*abfd ATTRIBUTE_UNUSED
;
378 arelent
*reloc_entry
;
379 asymbol
*symbol ATTRIBUTE_UNUSED
;
380 PTR data ATTRIBUTE_UNUSED
;
381 asection
*input_section
;
383 char **error_message ATTRIBUTE_UNUSED
;
386 reloc_entry
->address
+= input_section
->output_offset
;
391 elf_s390_is_local_label_name (abfd
, name
)
395 if (name
[0] == '.' && (name
[1] == 'X' || name
[1] == 'L'))
398 return _bfd_elf_is_local_label_name (abfd
, name
);
401 /* Functions for the 390 ELF linker. */
403 /* The name of the dynamic interpreter. This is put in the .interp
406 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
408 /* The size in bytes of the first entry in the procedure linkage table. */
409 #define PLT_FIRST_ENTRY_SIZE 32
410 /* The size in bytes of an entry in the procedure linkage table. */
411 #define PLT_ENTRY_SIZE 32
413 #define GOT_ENTRY_SIZE 8
415 /* The first three entries in a procedure linkage table are reserved,
416 and the initial contents are unimportant (we zero them out).
417 Subsequent entries look like this. See the SVR4 ABI 386
418 supplement to see how this works. */
420 /* For the s390, simple addr offset can only be 0 - 4096.
421 To use the full 16777216 TB address space, several instructions
422 are needed to load an address in a register and execute
423 a branch( or just saving the address)
425 Furthermore, only r 0 and 1 are free to use!!! */
427 /* The first 3 words in the GOT are then reserved.
428 Word 0 is the address of the dynamic table.
429 Word 1 is a pointer to a structure describing the object
430 Word 2 is used to point to the loader entry address.
432 The code for PLT entries looks like this:
434 The GOT holds the address in the PLT to be executed.
435 The loader then gets:
436 24(15) = Pointer to the structure describing the object.
437 28(15) = Offset in symbol table
438 The loader must then find the module where the function is
439 and insert the address in the GOT.
441 PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
442 LG 1,0(1) # 6 bytes Load address from GOT in r1
443 BCR 15,1 # 2 bytes Jump to address
444 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
445 LGF 1,12(1) # 6 bytes Load offset in symbl table in r1
446 BRCL 15,-x # 6 bytes Jump to start of PLT
447 .long ? # 4 bytes offset into symbol table
449 Total = 32 bytes per PLT entry
450 Fixup at offset 2: relative address to GOT entry
451 Fixup at offset 22: relative branch to PLT0
452 Fixup at offset 28: 32 bit offset into symbol table
454 A 32 bit offset into the symbol table is enough. It allows for symbol
455 tables up to a size of 2 gigabyte. A single dynamic object (the main
456 program, any shared library) is limited to 4GB in size and I want to see
457 the program that manages to have a symbol table of more than 2 GB with a
458 total size of at max 4 GB. */
460 #define PLT_ENTRY_WORD0 (bfd_vma) 0xc0100000
461 #define PLT_ENTRY_WORD1 (bfd_vma) 0x0000e310
462 #define PLT_ENTRY_WORD2 (bfd_vma) 0x10000004
463 #define PLT_ENTRY_WORD3 (bfd_vma) 0x07f10d10
464 #define PLT_ENTRY_WORD4 (bfd_vma) 0xe310100c
465 #define PLT_ENTRY_WORD5 (bfd_vma) 0x0014c0f4
466 #define PLT_ENTRY_WORD6 (bfd_vma) 0x00000000
467 #define PLT_ENTRY_WORD7 (bfd_vma) 0x00000000
469 /* The first PLT entry pushes the offset into the symbol table
470 from R1 onto the stack at 8(15) and the loader object info
471 at 12(15), loads the loader address in R1 and jumps to it. */
473 /* The first entry in the PLT:
476 STG 1,56(15) # r1 contains the offset into the symbol table
477 LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
478 MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
479 LG 1,16(1) # get entry address of loader
480 BCR 15,1 # jump to loader
482 Fixup at offset 8: relative address to start of GOT. */
484 #define PLT_FIRST_ENTRY_WORD0 (bfd_vma) 0xe310f038
485 #define PLT_FIRST_ENTRY_WORD1 (bfd_vma) 0x0024c010
486 #define PLT_FIRST_ENTRY_WORD2 (bfd_vma) 0x00000000
487 #define PLT_FIRST_ENTRY_WORD3 (bfd_vma) 0xd207f030
488 #define PLT_FIRST_ENTRY_WORD4 (bfd_vma) 0x1008e310
489 #define PLT_FIRST_ENTRY_WORD5 (bfd_vma) 0x10100004
490 #define PLT_FIRST_ENTRY_WORD6 (bfd_vma) 0x07f10700
491 #define PLT_FIRST_ENTRY_WORD7 (bfd_vma) 0x07000700
493 /* The s390 linker needs to keep track of the number of relocs that it
494 decides to copy as dynamic relocs in check_relocs for each symbol.
495 This is so that it can later discard them if they are found to be
496 unnecessary. We store the information in a field extending the
497 regular ELF linker hash table. */
499 struct elf_s390_dyn_relocs
501 struct elf_s390_dyn_relocs
*next
;
503 /* The input section of the reloc. */
506 /* Total number of relocs copied for the input section. */
509 /* Number of pc-relative relocs copied for the input section. */
510 bfd_size_type pc_count
;
513 /* s390 ELF linker hash entry. */
515 struct elf_s390_link_hash_entry
517 struct elf_link_hash_entry elf
;
519 /* Track dynamic relocs copied for this symbol. */
520 struct elf_s390_dyn_relocs
*dyn_relocs
;
522 /* Number of GOTPLT references for a function. */
523 bfd_signed_vma gotplt_refcount
;
525 #define GOT_UNKNOWN 0
529 #define GOT_TLS_IE_NLT 3
530 unsigned char tls_type
;
533 #define elf_s390_hash_entry(ent) \
534 ((struct elf_s390_link_hash_entry *)(ent))
536 struct elf_s390_obj_tdata
538 struct elf_obj_tdata root
;
540 /* tls_type for each local got entry. */
541 char *local_got_tls_type
;
544 #define elf_s390_tdata(abfd) \
545 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
547 #define elf_s390_local_got_tls_type(abfd) \
548 (elf_s390_tdata (abfd)->local_got_tls_type)
551 elf_s390_mkobject (abfd
)
554 bfd_size_type amt
= sizeof (struct elf_s390_obj_tdata
);
555 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
556 if (abfd
->tdata
.any
== NULL
)
562 elf_s390_object_p (abfd
)
565 /* Allocate our special target data. */
566 struct elf_s390_obj_tdata
*new_tdata
;
567 bfd_size_type amt
= sizeof (struct elf_s390_obj_tdata
);
568 new_tdata
= bfd_zalloc (abfd
, amt
);
569 if (new_tdata
== NULL
)
571 new_tdata
->root
= *abfd
->tdata
.elf_obj_data
;
572 abfd
->tdata
.any
= new_tdata
;
573 /* Set the right machine number for an s390 elf32 file. */
574 return bfd_default_set_arch_mach (abfd
, bfd_arch_s390
, bfd_mach_s390_64
);
577 /* s390 ELF linker hash table. */
579 struct elf_s390_link_hash_table
581 struct elf_link_hash_table elf
;
583 /* Short-cuts to get to dynamic linker sections. */
593 bfd_signed_vma refcount
;
597 /* Small local sym to section mapping cache. */
598 struct sym_sec_cache sym_sec
;
601 /* Get the s390 ELF linker hash table from a link_info structure. */
603 #define elf_s390_hash_table(p) \
604 ((struct elf_s390_link_hash_table *) ((p)->hash))
606 /* Create an entry in an s390 ELF linker hash table. */
608 static struct bfd_hash_entry
*
609 link_hash_newfunc (entry
, table
, string
)
610 struct bfd_hash_entry
*entry
;
611 struct bfd_hash_table
*table
;
614 /* Allocate the structure if it has not already been allocated by a
618 entry
= bfd_hash_allocate (table
,
619 sizeof (struct elf_s390_link_hash_entry
));
624 /* Call the allocation method of the superclass. */
625 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
628 struct elf_s390_link_hash_entry
*eh
;
630 eh
= (struct elf_s390_link_hash_entry
*) entry
;
631 eh
->dyn_relocs
= NULL
;
632 eh
->gotplt_refcount
= 0;
633 eh
->tls_type
= GOT_UNKNOWN
;
639 /* Create an s390 ELF linker hash table. */
641 static struct bfd_link_hash_table
*
642 elf_s390_link_hash_table_create (abfd
)
645 struct elf_s390_link_hash_table
*ret
;
646 bfd_size_type amt
= sizeof (struct elf_s390_link_hash_table
);
648 ret
= (struct elf_s390_link_hash_table
*) bfd_malloc (amt
);
652 if (! _bfd_elf_link_hash_table_init (&ret
->elf
, abfd
, link_hash_newfunc
))
665 ret
->tls_ldm_got
.refcount
= 0;
666 ret
->sym_sec
.abfd
= NULL
;
668 return &ret
->elf
.root
;
671 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
672 shortcuts to them in our hash table. */
675 create_got_section (dynobj
, info
)
677 struct bfd_link_info
*info
;
679 struct elf_s390_link_hash_table
*htab
;
681 if (! _bfd_elf_create_got_section (dynobj
, info
))
684 htab
= elf_s390_hash_table (info
);
685 htab
->sgot
= bfd_get_section_by_name (dynobj
, ".got");
686 htab
->sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
687 if (!htab
->sgot
|| !htab
->sgotplt
)
690 htab
->srelgot
= bfd_make_section (dynobj
, ".rela.got");
691 if (htab
->srelgot
== NULL
692 || ! bfd_set_section_flags (dynobj
, htab
->srelgot
,
693 (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
694 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
696 || ! bfd_set_section_alignment (dynobj
, htab
->srelgot
, 3))
701 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
702 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
706 elf_s390_create_dynamic_sections (dynobj
, info
)
708 struct bfd_link_info
*info
;
710 struct elf_s390_link_hash_table
*htab
;
712 htab
= elf_s390_hash_table (info
);
713 if (!htab
->sgot
&& !create_got_section (dynobj
, info
))
716 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
719 htab
->splt
= bfd_get_section_by_name (dynobj
, ".plt");
720 htab
->srelplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
721 htab
->sdynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
723 htab
->srelbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
725 if (!htab
->splt
|| !htab
->srelplt
|| !htab
->sdynbss
726 || (!info
->shared
&& !htab
->srelbss
))
732 /* Copy the extra info we tack onto an elf_link_hash_entry. */
735 elf_s390_copy_indirect_symbol (bed
, dir
, ind
)
736 struct elf_backend_data
*bed
;
737 struct elf_link_hash_entry
*dir
, *ind
;
739 struct elf_s390_link_hash_entry
*edir
, *eind
;
741 edir
= (struct elf_s390_link_hash_entry
*) dir
;
742 eind
= (struct elf_s390_link_hash_entry
*) ind
;
744 if (eind
->dyn_relocs
!= NULL
)
746 if (edir
->dyn_relocs
!= NULL
)
748 struct elf_s390_dyn_relocs
**pp
;
749 struct elf_s390_dyn_relocs
*p
;
751 if (ind
->root
.type
== bfd_link_hash_indirect
)
754 /* Add reloc counts against the weak sym to the strong sym
755 list. Merge any entries against the same section. */
756 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
758 struct elf_s390_dyn_relocs
*q
;
760 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
761 if (q
->sec
== p
->sec
)
763 q
->pc_count
+= p
->pc_count
;
764 q
->count
+= p
->count
;
771 *pp
= edir
->dyn_relocs
;
774 edir
->dyn_relocs
= eind
->dyn_relocs
;
775 eind
->dyn_relocs
= NULL
;
778 if (ind
->root
.type
== bfd_link_hash_indirect
779 && dir
->got
.refcount
<= 0)
781 edir
->tls_type
= eind
->tls_type
;
782 eind
->tls_type
= GOT_UNKNOWN
;
785 _bfd_elf_link_hash_copy_indirect (bed
, dir
, ind
);
789 elf_s390_tls_transition (info
, r_type
, is_local
)
790 struct bfd_link_info
*info
;
802 return R_390_TLS_LE64
;
803 return R_390_TLS_IE64
;
804 case R_390_TLS_GOTIE64
:
806 return R_390_TLS_LE64
;
807 return R_390_TLS_GOTIE64
;
808 case R_390_TLS_LDM64
:
809 return R_390_TLS_LE64
;
815 /* Look through the relocs for a section during the first phase, and
816 allocate space in the global offset table or procedure linkage
820 elf_s390_check_relocs (abfd
, info
, sec
, relocs
)
822 struct bfd_link_info
*info
;
824 const Elf_Internal_Rela
*relocs
;
826 struct elf_s390_link_hash_table
*htab
;
827 Elf_Internal_Shdr
*symtab_hdr
;
828 struct elf_link_hash_entry
**sym_hashes
;
829 const Elf_Internal_Rela
*rel
;
830 const Elf_Internal_Rela
*rel_end
;
832 bfd_signed_vma
*local_got_refcounts
;
833 int tls_type
, old_tls_type
;
835 if (info
->relocateable
)
838 htab
= elf_s390_hash_table (info
);
839 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
840 sym_hashes
= elf_sym_hashes (abfd
);
841 local_got_refcounts
= elf_local_got_refcounts (abfd
);
845 rel_end
= relocs
+ sec
->reloc_count
;
846 for (rel
= relocs
; rel
< rel_end
; rel
++)
849 unsigned long r_symndx
;
850 struct elf_link_hash_entry
*h
;
852 r_symndx
= ELF64_R_SYM (rel
->r_info
);
854 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
856 (*_bfd_error_handler
) (_("%s: bad symbol index: %d"),
857 bfd_archive_filename (abfd
),
862 if (r_symndx
< symtab_hdr
->sh_info
)
865 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
867 /* Create got section and local_got_refcounts array if they
869 r_type
= elf_s390_tls_transition (info
,
870 ELF64_R_TYPE (rel
->r_info
),
883 case R_390_GOTPLTENT
:
885 case R_390_TLS_GOTIE12
:
886 case R_390_TLS_GOTIE64
:
887 case R_390_TLS_IEENT
:
889 case R_390_TLS_LDM64
:
891 && local_got_refcounts
== NULL
)
895 size
= symtab_hdr
->sh_info
;
896 size
*= (sizeof (bfd_signed_vma
) + sizeof(char));
897 local_got_refcounts
= ((bfd_signed_vma
*)
898 bfd_zalloc (abfd
, size
));
899 if (local_got_refcounts
== NULL
)
901 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
902 elf_s390_local_got_tls_type (abfd
)
903 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
911 if (htab
->sgot
== NULL
)
913 if (htab
->elf
.dynobj
== NULL
)
914 htab
->elf
.dynobj
= abfd
;
915 if (!create_got_section (htab
->elf
.dynobj
, info
))
927 /* Got is created, nothing to be done. */
937 /* This symbol requires a procedure linkage table entry. We
938 actually build the entry in adjust_dynamic_symbol,
939 because this might be a case of linking PIC code which is
940 never referenced by a dynamic object, in which case we
941 don't need to generate a procedure linkage table entry
944 /* If this is a local symbol, we resolve it directly without
945 creating a procedure linkage table entry. */
948 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
949 h
->plt
.refcount
+= 1;
957 case R_390_GOTPLTENT
:
958 /* This symbol requires either a procedure linkage table entry
959 or an entry in the local got. We actually build the entry
960 in adjust_dynamic_symbol because whether this is really a
961 global reference can change and with it the fact if we have
962 to create a plt entry or a local got entry. To be able to
963 make a once global symbol a local one we have to keep track
964 of the number of gotplt references that exist for this
968 ((struct elf_s390_link_hash_entry
*) h
)->gotplt_refcount
++;
969 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
970 h
->plt
.refcount
+= 1;
973 local_got_refcounts
[r_symndx
] += 1;
976 case R_390_TLS_LDM64
:
977 htab
->tls_ldm_got
.refcount
+= 1;
981 case R_390_TLS_GOTIE12
:
982 case R_390_TLS_GOTIE64
:
983 case R_390_TLS_IEENT
:
985 info
->flags
|= DF_STATIC_TLS
;
994 /* This symbol requires a global offset table entry. */
1002 tls_type
= GOT_NORMAL
;
1004 case R_390_TLS_GD64
:
1005 tls_type
= GOT_TLS_GD
;
1007 case R_390_TLS_IE64
:
1008 case R_390_TLS_GOTIE64
:
1009 tls_type
= GOT_TLS_IE
;
1011 case R_390_TLS_GOTIE12
:
1012 case R_390_TLS_IEENT
:
1013 tls_type
= GOT_TLS_IE_NLT
;
1019 h
->got
.refcount
+= 1;
1020 old_tls_type
= elf_s390_hash_entry(h
)->tls_type
;
1024 local_got_refcounts
[r_symndx
] += 1;
1025 old_tls_type
= elf_s390_local_got_tls_type (abfd
) [r_symndx
];
1027 /* If a TLS symbol is accessed using IE at least once,
1028 there is no point to use dynamic model for it. */
1029 if (old_tls_type
!= tls_type
&& old_tls_type
!= GOT_UNKNOWN
)
1031 if (old_tls_type
== GOT_NORMAL
|| tls_type
== GOT_NORMAL
)
1033 (*_bfd_error_handler
)
1034 (_("%s: `%s' accessed both as normal and thread local symbol"),
1035 bfd_archive_filename (abfd
), h
->root
.root
.string
);
1038 if (old_tls_type
> tls_type
)
1039 tls_type
= old_tls_type
;
1042 if (old_tls_type
!= tls_type
)
1045 elf_s390_hash_entry (h
)->tls_type
= tls_type
;
1047 elf_s390_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
1050 if (r_type
!= R_390_TLS_IE64
)
1054 case R_390_TLS_LE64
:
1057 info
->flags
|= DF_STATIC_TLS
;
1069 if (h
!= NULL
&& !info
->shared
)
1071 /* If this reloc is in a read-only section, we might
1072 need a copy reloc. We can't check reliably at this
1073 stage whether the section is read-only, as input
1074 sections have not yet been mapped to output sections.
1075 Tentatively set the flag for now, and correct in
1076 adjust_dynamic_symbol. */
1077 h
->elf_link_hash_flags
|= ELF_LINK_NON_GOT_REF
;
1079 /* We may need a .plt entry if the function this reloc
1080 refers to is in a shared lib. */
1081 h
->plt
.refcount
+= 1;
1084 /* If we are creating a shared library, and this is a reloc
1085 against a global symbol, or a non PC relative reloc
1086 against a local symbol, then we need to copy the reloc
1087 into the shared library. However, if we are linking with
1088 -Bsymbolic, we do not need to copy a reloc against a
1089 global symbol which is defined in an object we are
1090 including in the link (i.e., DEF_REGULAR is set). At
1091 this point we have not seen all the input files, so it is
1092 possible that DEF_REGULAR is not set now but will be set
1093 later (it is never cleared). In case of a weak definition,
1094 DEF_REGULAR may be cleared later by a strong definition in
1095 a shared library. We account for that possibility below by
1096 storing information in the relocs_copied field of the hash
1097 table entry. A similar situation occurs when creating
1098 shared libraries and symbol visibility changes render the
1101 If on the other hand, we are creating an executable, we
1102 may need to keep relocations for symbols satisfied by a
1103 dynamic library if we manage to avoid copy relocs for the
1106 && (sec
->flags
& SEC_ALLOC
) != 0
1107 && ((ELF64_R_TYPE (rel
->r_info
) != R_390_PC16
1108 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC16DBL
1109 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC32
1110 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC32DBL
1111 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC64
)
1113 && (! info
->symbolic
1114 || h
->root
.type
== bfd_link_hash_defweak
1115 || (h
->elf_link_hash_flags
1116 & ELF_LINK_HASH_DEF_REGULAR
) == 0))))
1118 && (sec
->flags
& SEC_ALLOC
) != 0
1120 && (h
->root
.type
== bfd_link_hash_defweak
1121 || (h
->elf_link_hash_flags
1122 & ELF_LINK_HASH_DEF_REGULAR
) == 0)))
1124 struct elf_s390_dyn_relocs
*p
;
1125 struct elf_s390_dyn_relocs
**head
;
1127 /* We must copy these reloc types into the output file.
1128 Create a reloc section in dynobj and make room for
1135 name
= (bfd_elf_string_from_elf_section
1137 elf_elfheader (abfd
)->e_shstrndx
,
1138 elf_section_data (sec
)->rel_hdr
.sh_name
));
1142 if (strncmp (name
, ".rela", 5) != 0
1143 || strcmp (bfd_get_section_name (abfd
, sec
),
1146 (*_bfd_error_handler
)
1147 (_("%s: bad relocation section name `%s\'"),
1148 bfd_archive_filename (abfd
), name
);
1151 if (htab
->elf
.dynobj
== NULL
)
1152 htab
->elf
.dynobj
= abfd
;
1154 dynobj
= htab
->elf
.dynobj
;
1155 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1160 sreloc
= bfd_make_section (dynobj
, name
);
1161 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
1162 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
1163 if ((sec
->flags
& SEC_ALLOC
) != 0)
1164 flags
|= SEC_ALLOC
| SEC_LOAD
;
1166 || ! bfd_set_section_flags (dynobj
, sreloc
, flags
)
1167 || ! bfd_set_section_alignment (dynobj
, sreloc
, 3))
1170 elf_section_data (sec
)->sreloc
= sreloc
;
1173 /* If this is a global symbol, we count the number of
1174 relocations we need for this symbol. */
1177 head
= &((struct elf_s390_link_hash_entry
*) h
)->dyn_relocs
;
1181 /* Track dynamic relocs needed for local syms too.
1182 We really need local syms available to do this
1186 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
1191 head
= ((struct elf_s390_dyn_relocs
**)
1192 &elf_section_data (s
)->local_dynrel
);
1196 if (p
== NULL
|| p
->sec
!= sec
)
1198 bfd_size_type amt
= sizeof *p
;
1199 p
= ((struct elf_s390_dyn_relocs
*)
1200 bfd_alloc (htab
->elf
.dynobj
, amt
));
1211 if (ELF64_R_TYPE (rel
->r_info
) == R_390_PC16
1212 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC16DBL
1213 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC32
1214 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC32DBL
1215 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC64
)
1220 /* This relocation describes the C++ object vtable hierarchy.
1221 Reconstruct it for later use during GC. */
1222 case R_390_GNU_VTINHERIT
:
1223 if (!_bfd_elf64_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1227 /* This relocation describes which C++ vtable entries are actually
1228 used. Record for later use during GC. */
1229 case R_390_GNU_VTENTRY
:
1230 if (!_bfd_elf64_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1242 /* Return the section that should be marked against GC for a given
1246 elf_s390_gc_mark_hook (sec
, info
, rel
, h
, sym
)
1248 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1249 Elf_Internal_Rela
*rel
;
1250 struct elf_link_hash_entry
*h
;
1251 Elf_Internal_Sym
*sym
;
1255 switch (ELF64_R_TYPE (rel
->r_info
))
1257 case R_390_GNU_VTINHERIT
:
1258 case R_390_GNU_VTENTRY
:
1262 switch (h
->root
.type
)
1264 case bfd_link_hash_defined
:
1265 case bfd_link_hash_defweak
:
1266 return h
->root
.u
.def
.section
;
1268 case bfd_link_hash_common
:
1269 return h
->root
.u
.c
.p
->section
;
1277 return bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
1282 /* Update the got entry reference counts for the section being removed. */
1285 elf_s390_gc_sweep_hook (abfd
, info
, sec
, relocs
)
1287 struct bfd_link_info
*info
;
1289 const Elf_Internal_Rela
*relocs
;
1291 Elf_Internal_Shdr
*symtab_hdr
;
1292 struct elf_link_hash_entry
**sym_hashes
;
1293 bfd_signed_vma
*local_got_refcounts
;
1294 const Elf_Internal_Rela
*rel
, *relend
;
1295 unsigned long r_symndx
;
1297 struct elf_link_hash_entry
*h
;
1299 elf_section_data (sec
)->local_dynrel
= NULL
;
1301 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1302 sym_hashes
= elf_sym_hashes (abfd
);
1303 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1305 relend
= relocs
+ sec
->reloc_count
;
1306 for (rel
= relocs
; rel
< relend
; rel
++)
1308 r_symndx
= ELF64_R_SYM (rel
->r_info
);
1310 if (r_symndx
< symtab_hdr
->sh_info
)
1313 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1315 r_type
= elf_s390_tls_transition (info
,
1316 ELF64_R_TYPE (rel
->r_info
),
1317 r_symndx
>= symtab_hdr
->sh_info
);
1320 case R_390_TLS_LDM64
:
1321 if (elf_s390_hash_table (info
)->tls_ldm_got
.refcount
> 0)
1322 elf_s390_hash_table (info
)->tls_ldm_got
.refcount
-= 1;
1325 case R_390_TLS_GD64
:
1326 case R_390_TLS_IE64
:
1327 case R_390_TLS_GOTIE12
:
1328 case R_390_TLS_GOTIE64
:
1329 case R_390_TLS_IEENT
:
1334 case R_390_GOTOFF16
:
1335 case R_390_GOTOFF32
:
1336 case R_390_GOTOFF64
:
1338 case R_390_GOTPCDBL
:
1342 if (h
->got
.refcount
> 0)
1343 h
->got
.refcount
-= 1;
1345 else if (local_got_refcounts
!= NULL
)
1347 if (local_got_refcounts
[r_symndx
] > 0)
1348 local_got_refcounts
[r_symndx
] -= 1;
1350 if (r_type
!= R_390_TLS_IE64
)
1354 case R_390_TLS_LE64
:
1371 struct elf_s390_link_hash_entry
*eh
;
1372 struct elf_s390_dyn_relocs
**pp
;
1373 struct elf_s390_dyn_relocs
*p
;
1375 if (!info
->shared
&& h
->plt
.refcount
> 0)
1376 h
->plt
.refcount
-= 1;
1378 eh
= (struct elf_s390_link_hash_entry
*) h
;
1380 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
1383 if (ELF64_R_TYPE (rel
->r_info
) == R_390_PC16
1384 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC16DBL
1385 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC32
1386 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC32DBL
1387 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC64
)
1397 case R_390_PLT16DBL
:
1399 case R_390_PLT32DBL
:
1401 case R_390_PLTOFF16
:
1402 case R_390_PLTOFF32
:
1403 case R_390_PLTOFF64
:
1406 if (h
->plt
.refcount
> 0)
1407 h
->plt
.refcount
-= 1;
1411 case R_390_GOTPLT12
:
1412 case R_390_GOTPLT16
:
1413 case R_390_GOTPLT32
:
1414 case R_390_GOTPLT64
:
1415 case R_390_GOTPLTENT
:
1418 if (h
->plt
.refcount
> 0)
1420 ((struct elf_s390_link_hash_entry
*) h
)->gotplt_refcount
--;
1421 h
->plt
.refcount
-= 1;
1424 else if (local_got_refcounts
!= NULL
)
1426 if (local_got_refcounts
[r_symndx
] > 0)
1427 local_got_refcounts
[r_symndx
] -= 1;
1439 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1440 entry but we found we will not create any. Called when we find we will
1441 not have any PLT for this symbol, by for example
1442 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1443 or elf_s390_size_dynamic_sections if no dynamic sections will be
1444 created (we're only linking static objects). */
1447 elf_s390_adjust_gotplt (h
)
1448 struct elf_s390_link_hash_entry
*h
;
1450 if (h
->elf
.root
.type
== bfd_link_hash_warning
)
1451 h
= (struct elf_s390_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
1453 if (h
->gotplt_refcount
<= 0)
1456 /* We simply add the number of gotplt references to the number
1457 * of got references for this symbol. */
1458 h
->elf
.got
.refcount
+= h
->gotplt_refcount
;
1459 h
->gotplt_refcount
= -1;
1462 /* Adjust a symbol defined by a dynamic object and referenced by a
1463 regular object. The current definition is in some section of the
1464 dynamic object, but we're not including those sections. We have to
1465 change the definition to something the rest of the link can
1469 elf_s390_adjust_dynamic_symbol (info
, h
)
1470 struct bfd_link_info
*info
;
1471 struct elf_link_hash_entry
*h
;
1473 struct elf_s390_link_hash_table
*htab
;
1474 struct elf_s390_link_hash_entry
* eh
;
1475 struct elf_s390_dyn_relocs
*p
;
1477 unsigned int power_of_two
;
1479 /* If this is a function, put it in the procedure linkage table. We
1480 will fill in the contents of the procedure linkage table later
1481 (although we could actually do it here). */
1482 if (h
->type
== STT_FUNC
1483 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
1485 if (h
->plt
.refcount
<= 0
1487 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) == 0
1488 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_REF_DYNAMIC
) == 0
1489 && h
->root
.type
!= bfd_link_hash_undefweak
1490 && h
->root
.type
!= bfd_link_hash_undefined
))
1492 /* This case can occur if we saw a PLT32 reloc in an input
1493 file, but the symbol was never referred to by a dynamic
1494 object, or if all references were garbage collected. In
1495 such a case, we don't actually need to build a procedure
1496 linkage table, and we can just do a PC32 reloc instead. */
1497 h
->plt
.offset
= (bfd_vma
) -1;
1498 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
1499 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1505 /* It's possible that we incorrectly decided a .plt reloc was
1506 needed for an R_390_PC32 reloc to a non-function sym in
1507 check_relocs. We can't decide accurately between function and
1508 non-function syms in check-relocs; Objects loaded later in
1509 the link may change h->type. So fix it now. */
1510 h
->plt
.offset
= (bfd_vma
) -1;
1512 /* If this is a weak symbol, and there is a real definition, the
1513 processor independent code will have arranged for us to see the
1514 real definition first, and we can just use the same value. */
1515 if (h
->weakdef
!= NULL
)
1517 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
1518 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
1519 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
1520 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
1524 /* This is a reference to a symbol defined by a dynamic object which
1525 is not a function. */
1527 /* If we are creating a shared library, we must presume that the
1528 only references to the symbol are via the global offset table.
1529 For such cases we need not do anything here; the relocations will
1530 be handled correctly by relocate_section. */
1534 /* If there are no references to this symbol that do not use the
1535 GOT, we don't need to generate a copy reloc. */
1536 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0)
1539 /* If -z nocopyreloc was given, we won't generate them either. */
1540 if (info
->nocopyreloc
)
1542 h
->elf_link_hash_flags
&= ~ELF_LINK_NON_GOT_REF
;
1546 eh
= (struct elf_s390_link_hash_entry
*) h
;
1547 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1549 s
= p
->sec
->output_section
;
1550 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1554 /* If we didn't find any dynamic relocs in read-only sections, then
1555 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1558 h
->elf_link_hash_flags
&= ~ELF_LINK_NON_GOT_REF
;
1562 /* We must allocate the symbol in our .dynbss section, which will
1563 become part of the .bss section of the executable. There will be
1564 an entry for this symbol in the .dynsym section. The dynamic
1565 object will contain position independent code, so all references
1566 from the dynamic object to this symbol will go through the global
1567 offset table. The dynamic linker will use the .dynsym entry to
1568 determine the address it must put in the global offset table, so
1569 both the dynamic object and the regular object will refer to the
1570 same memory location for the variable. */
1572 htab
= elf_s390_hash_table (info
);
1574 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1575 copy the initial value out of the dynamic object and into the
1576 runtime process image. */
1577 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
1579 htab
->srelbss
->_raw_size
+= sizeof (Elf64_External_Rela
);
1580 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
1583 /* We need to figure out the alignment required for this symbol. I
1584 have no idea how ELF linkers handle this. */
1585 power_of_two
= bfd_log2 (h
->size
);
1586 if (power_of_two
> 3)
1589 /* Apply the required alignment. */
1591 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
, (bfd_size_type
) (1 << power_of_two
));
1592 if (power_of_two
> bfd_get_section_alignment (htab
->elf
.dynobj
, s
))
1594 if (! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, power_of_two
))
1598 /* Define the symbol as being at this point in the section. */
1599 h
->root
.u
.def
.section
= s
;
1600 h
->root
.u
.def
.value
= s
->_raw_size
;
1602 /* Increment the section size to make room for the symbol. */
1603 s
->_raw_size
+= h
->size
;
1608 /* This is the condition under which elf_s390_finish_dynamic_symbol
1609 will be called from elflink.h. If elflink.h doesn't call our
1610 finish_dynamic_symbol routine, we'll need to do something about
1611 initializing any .plt and .got entries in elf_s390_relocate_section. */
1612 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
1614 && ((INFO)->shared \
1615 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
1616 && ((H)->dynindx != -1 \
1617 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
1619 /* Allocate space in .plt, .got and associated reloc sections for
1623 allocate_dynrelocs (h
, inf
)
1624 struct elf_link_hash_entry
*h
;
1627 struct bfd_link_info
*info
;
1628 struct elf_s390_link_hash_table
*htab
;
1629 struct elf_s390_link_hash_entry
*eh
;
1630 struct elf_s390_dyn_relocs
*p
;
1632 if (h
->root
.type
== bfd_link_hash_indirect
)
1635 if (h
->root
.type
== bfd_link_hash_warning
)
1636 /* When warning symbols are created, they **replace** the "real"
1637 entry in the hash table, thus we never get to see the real
1638 symbol in a hash traversal. So look at it now. */
1639 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1641 info
= (struct bfd_link_info
*) inf
;
1642 htab
= elf_s390_hash_table (info
);
1644 if (htab
->elf
.dynamic_sections_created
1645 && h
->plt
.refcount
> 0)
1647 /* Make sure this symbol is output as a dynamic symbol.
1648 Undefined weak syms won't yet be marked as dynamic. */
1649 if (h
->dynindx
== -1
1650 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
1652 if (! bfd_elf64_link_record_dynamic_symbol (info
, h
))
1656 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
, h
))
1658 asection
*s
= htab
->splt
;
1660 /* If this is the first .plt entry, make room for the special
1662 if (s
->_raw_size
== 0)
1663 s
->_raw_size
+= PLT_FIRST_ENTRY_SIZE
;
1665 h
->plt
.offset
= s
->_raw_size
;
1667 /* If this symbol is not defined in a regular file, and we are
1668 not generating a shared library, then set the symbol to this
1669 location in the .plt. This is required to make function
1670 pointers compare as equal between the normal executable and
1671 the shared library. */
1673 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1675 h
->root
.u
.def
.section
= s
;
1676 h
->root
.u
.def
.value
= h
->plt
.offset
;
1679 /* Make room for this entry. */
1680 s
->_raw_size
+= PLT_ENTRY_SIZE
;
1682 /* We also need to make an entry in the .got.plt section, which
1683 will be placed in the .got section by the linker script. */
1684 htab
->sgotplt
->_raw_size
+= GOT_ENTRY_SIZE
;
1686 /* We also need to make an entry in the .rela.plt section. */
1687 htab
->srelplt
->_raw_size
+= sizeof (Elf64_External_Rela
);
1691 h
->plt
.offset
= (bfd_vma
) -1;
1692 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
1693 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1698 h
->plt
.offset
= (bfd_vma
) -1;
1699 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
1700 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1703 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1704 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1705 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1706 we can save the dynamic TLS relocation. */
1707 if (h
->got
.refcount
> 0
1710 && elf_s390_hash_entry(h
)->tls_type
>= GOT_TLS_IE
)
1712 if (elf_s390_hash_entry(h
)->tls_type
== GOT_TLS_IE_NLT
)
1713 /* For the GOTIE access without a literal pool entry the offset has
1714 to be stored somewhere. The immediate value in the instruction
1715 is not bit enough so the value is stored in the got. */
1717 h
->got
.offset
= htab
->sgot
->_raw_size
;
1718 htab
->sgot
->_raw_size
+= GOT_ENTRY_SIZE
;
1721 h
->got
.offset
= (bfd_vma
) -1;
1723 else if (h
->got
.refcount
> 0)
1727 int tls_type
= elf_s390_hash_entry(h
)->tls_type
;
1729 /* Make sure this symbol is output as a dynamic symbol.
1730 Undefined weak syms won't yet be marked as dynamic. */
1731 if (h
->dynindx
== -1
1732 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
1734 if (! bfd_elf64_link_record_dynamic_symbol (info
, h
))
1739 h
->got
.offset
= s
->_raw_size
;
1740 s
->_raw_size
+= GOT_ENTRY_SIZE
;
1741 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1742 if (tls_type
== GOT_TLS_GD
)
1743 s
->_raw_size
+= GOT_ENTRY_SIZE
;
1744 dyn
= htab
->elf
.dynamic_sections_created
;
1745 /* R_390_TLS_IE64 needs one dynamic relocation,
1746 R_390_TLS_GD64 needs one if local symbol and two if global. */
1747 if ((tls_type
== GOT_TLS_GD
&& h
->dynindx
== -1)
1748 || tls_type
>= GOT_TLS_IE
)
1749 htab
->srelgot
->_raw_size
+= sizeof (Elf64_External_Rela
);
1750 else if (tls_type
== GOT_TLS_GD
)
1751 htab
->srelgot
->_raw_size
+= 2 * sizeof (Elf64_External_Rela
);
1752 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
, h
))
1753 htab
->srelgot
->_raw_size
+= sizeof (Elf64_External_Rela
);
1756 h
->got
.offset
= (bfd_vma
) -1;
1758 eh
= (struct elf_s390_link_hash_entry
*) h
;
1759 if (eh
->dyn_relocs
== NULL
)
1762 /* In the shared -Bsymbolic case, discard space allocated for
1763 dynamic pc-relative relocs against symbols which turn out to be
1764 defined in regular objects. For the normal shared case, discard
1765 space for pc-relative relocs that have become local due to symbol
1766 visibility changes. */
1770 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) != 0
1771 && ((h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) != 0
1774 struct elf_s390_dyn_relocs
**pp
;
1776 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
1778 p
->count
-= p
->pc_count
;
1789 /* For the non-shared case, discard space for relocs against
1790 symbols which turn out to need copy relocs or are not
1793 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0
1794 && (((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
1795 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1796 || (htab
->elf
.dynamic_sections_created
1797 && (h
->root
.type
== bfd_link_hash_undefweak
1798 || h
->root
.type
== bfd_link_hash_undefined
))))
1800 /* Make sure this symbol is output as a dynamic symbol.
1801 Undefined weak syms won't yet be marked as dynamic. */
1802 if (h
->dynindx
== -1
1803 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
1805 if (! bfd_elf64_link_record_dynamic_symbol (info
, h
))
1809 /* If that succeeded, we know we'll be keeping all the
1811 if (h
->dynindx
!= -1)
1815 eh
->dyn_relocs
= NULL
;
1820 /* Finally, allocate space. */
1821 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1823 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
1824 sreloc
->_raw_size
+= p
->count
* sizeof (Elf64_External_Rela
);
1830 /* Find any dynamic relocs that apply to read-only sections. */
1833 readonly_dynrelocs (h
, inf
)
1834 struct elf_link_hash_entry
*h
;
1837 struct elf_s390_link_hash_entry
*eh
;
1838 struct elf_s390_dyn_relocs
*p
;
1840 if (h
->root
.type
== bfd_link_hash_warning
)
1841 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1843 eh
= (struct elf_s390_link_hash_entry
*) h
;
1844 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1846 asection
*s
= p
->sec
->output_section
;
1848 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1850 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
1852 info
->flags
|= DF_TEXTREL
;
1854 /* Not an error, just cut short the traversal. */
1861 /* Set the sizes of the dynamic sections. */
1864 elf_s390_size_dynamic_sections (output_bfd
, info
)
1865 bfd
*output_bfd ATTRIBUTE_UNUSED
;
1866 struct bfd_link_info
*info
;
1868 struct elf_s390_link_hash_table
*htab
;
1874 htab
= elf_s390_hash_table (info
);
1875 dynobj
= htab
->elf
.dynobj
;
1879 if (htab
->elf
.dynamic_sections_created
)
1881 /* Set the contents of the .interp section to the interpreter. */
1884 s
= bfd_get_section_by_name (dynobj
, ".interp");
1887 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1888 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1892 /* Set up .got offsets for local syms, and space for local dynamic
1894 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
1896 bfd_signed_vma
*local_got
;
1897 bfd_signed_vma
*end_local_got
;
1898 char *local_tls_type
;
1899 bfd_size_type locsymcount
;
1900 Elf_Internal_Shdr
*symtab_hdr
;
1903 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
1906 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
1908 struct elf_s390_dyn_relocs
*p
;
1910 for (p
= *((struct elf_s390_dyn_relocs
**)
1911 &elf_section_data (s
)->local_dynrel
);
1915 if (!bfd_is_abs_section (p
->sec
)
1916 && bfd_is_abs_section (p
->sec
->output_section
))
1918 /* Input section has been discarded, either because
1919 it is a copy of a linkonce section or due to
1920 linker script /DISCARD/, so we'll be discarding
1923 else if (p
->count
!= 0)
1925 srela
= elf_section_data (p
->sec
)->sreloc
;
1926 srela
->_raw_size
+= p
->count
* sizeof (Elf64_External_Rela
);
1927 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
1928 info
->flags
|= DF_TEXTREL
;
1933 local_got
= elf_local_got_refcounts (ibfd
);
1937 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
1938 locsymcount
= symtab_hdr
->sh_info
;
1939 end_local_got
= local_got
+ locsymcount
;
1940 local_tls_type
= elf_s390_local_got_tls_type (ibfd
);
1942 srela
= htab
->srelgot
;
1943 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
1947 *local_got
= s
->_raw_size
;
1948 s
->_raw_size
+= GOT_ENTRY_SIZE
;
1949 if (*local_tls_type
== GOT_TLS_GD
)
1950 s
->_raw_size
+= GOT_ENTRY_SIZE
;
1952 srela
->_raw_size
+= sizeof (Elf64_External_Rela
);
1955 *local_got
= (bfd_vma
) -1;
1959 if (htab
->tls_ldm_got
.refcount
> 0)
1961 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
1963 htab
->tls_ldm_got
.offset
= htab
->sgot
->_raw_size
;
1964 htab
->sgot
->_raw_size
+= 2 * GOT_ENTRY_SIZE
;
1965 htab
->srelgot
->_raw_size
+= sizeof (Elf64_External_Rela
);
1968 htab
->tls_ldm_got
.offset
= -1;
1970 /* Allocate global sym .plt and .got entries, and space for global
1971 sym dynamic relocs. */
1972 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, (PTR
) info
);
1974 /* We now have determined the sizes of the various dynamic sections.
1975 Allocate memory for them. */
1977 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
1979 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
1984 || s
== htab
->sgotplt
)
1986 /* Strip this section if we don't need it; see the
1989 else if (strncmp (bfd_get_section_name (dynobj
, s
), ".rela", 5) == 0)
1991 if (s
->_raw_size
!= 0 && s
!= htab
->srelplt
)
1994 /* We use the reloc_count field as a counter if we need
1995 to copy relocs into the output file. */
2000 /* It's not one of our sections, so don't allocate space. */
2004 if (s
->_raw_size
== 0)
2006 /* If we don't need this section, strip it from the
2007 output file. This is to handle .rela.bss and
2008 .rela.plt. We must create it in
2009 create_dynamic_sections, because it must be created
2010 before the linker maps input sections to output
2011 sections. The linker does that before
2012 adjust_dynamic_symbol is called, and it is that
2013 function which decides whether anything needs to go
2014 into these sections. */
2016 _bfd_strip_section_from_output (info
, s
);
2020 /* Allocate memory for the section contents. We use bfd_zalloc
2021 here in case unused entries are not reclaimed before the
2022 section's contents are written out. This should not happen,
2023 but this way if it does, we get a R_390_NONE reloc instead
2025 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->_raw_size
);
2026 if (s
->contents
== NULL
)
2030 if (htab
->elf
.dynamic_sections_created
)
2032 /* Add some entries to the .dynamic section. We fill in the
2033 values later, in elf_s390_finish_dynamic_sections, but we
2034 must add the entries now so that we get the correct size for
2035 the .dynamic section. The DT_DEBUG entry is filled in by the
2036 dynamic linker and used by the debugger. */
2037 #define add_dynamic_entry(TAG, VAL) \
2038 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2042 if (!add_dynamic_entry (DT_DEBUG
, 0))
2046 if (htab
->splt
->_raw_size
!= 0)
2048 if (!add_dynamic_entry (DT_PLTGOT
, 0)
2049 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
2050 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2051 || !add_dynamic_entry (DT_JMPREL
, 0))
2057 if (!add_dynamic_entry (DT_RELA
, 0)
2058 || !add_dynamic_entry (DT_RELASZ
, 0)
2059 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
2062 /* If any dynamic relocs apply to a read-only section,
2063 then we need a DT_TEXTREL entry. */
2064 if ((info
->flags
& DF_TEXTREL
) == 0)
2065 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
,
2068 if ((info
->flags
& DF_TEXTREL
) != 0)
2070 if (!add_dynamic_entry (DT_TEXTREL
, 0))
2075 #undef add_dynamic_entry
2080 /* Return the base VMA address which should be subtracted from real addresses
2081 when resolving @dtpoff relocation.
2082 This is PT_TLS segment p_vaddr. */
2086 struct bfd_link_info
*info
;
2088 /* If tls_segment is NULL, we should have signalled an error already. */
2089 if (elf_hash_table (info
)->tls_segment
== NULL
)
2091 return elf_hash_table (info
)->tls_segment
->start
;
2094 /* Return the relocation value for @tpoff relocation
2095 if STT_TLS virtual address is ADDRESS. */
2098 tpoff (info
, address
)
2099 struct bfd_link_info
*info
;
2102 struct elf_link_tls_segment
*tls_segment
2103 = elf_hash_table (info
)->tls_segment
;
2105 /* If tls_segment is NULL, we should have signalled an error already. */
2106 if (tls_segment
== NULL
)
2108 return (align_power (tls_segment
->size
, tls_segment
->align
)
2109 + tls_segment
->start
- address
);
2112 /* Complain if TLS instruction relocation is against an invalid
2116 invalid_tls_insn (input_bfd
, input_section
, rel
)
2118 asection
*input_section
;
2119 Elf_Internal_Rela
*rel
;
2121 reloc_howto_type
*howto
;
2123 howto
= elf_howto_table
+ ELF64_R_TYPE (rel
->r_info
);
2124 (*_bfd_error_handler
)
2125 (_("%s(%s+0x%lx): invalid instruction for TLS relocation %s"),
2126 bfd_archive_filename (input_bfd
),
2127 bfd_get_section_name (input_bfd
, input_section
),
2128 (long) rel
->r_offset
,
2132 /* Relocate a 390 ELF section. */
2135 elf_s390_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
2136 contents
, relocs
, local_syms
, local_sections
)
2138 struct bfd_link_info
*info
;
2140 asection
*input_section
;
2142 Elf_Internal_Rela
*relocs
;
2143 Elf_Internal_Sym
*local_syms
;
2144 asection
**local_sections
;
2146 struct elf_s390_link_hash_table
*htab
;
2147 Elf_Internal_Shdr
*symtab_hdr
;
2148 struct elf_link_hash_entry
**sym_hashes
;
2149 bfd_vma
*local_got_offsets
;
2150 Elf_Internal_Rela
*rel
;
2151 Elf_Internal_Rela
*relend
;
2153 if (info
->relocateable
)
2156 htab
= elf_s390_hash_table (info
);
2157 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2158 sym_hashes
= elf_sym_hashes (input_bfd
);
2159 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2162 relend
= relocs
+ input_section
->reloc_count
;
2163 for (; rel
< relend
; rel
++)
2165 unsigned int r_type
;
2166 reloc_howto_type
*howto
;
2167 unsigned long r_symndx
;
2168 struct elf_link_hash_entry
*h
;
2169 Elf_Internal_Sym
*sym
;
2173 bfd_boolean unresolved_reloc
;
2174 bfd_reloc_status_type r
;
2177 r_type
= ELF64_R_TYPE (rel
->r_info
);
2178 if (r_type
== (int) R_390_GNU_VTINHERIT
2179 || r_type
== (int) R_390_GNU_VTENTRY
)
2181 if (r_type
>= (int) R_390_max
)
2183 bfd_set_error (bfd_error_bad_value
);
2187 howto
= elf_howto_table
+ r_type
;
2188 r_symndx
= ELF64_R_SYM (rel
->r_info
);
2190 /* This is a final link. */
2194 unresolved_reloc
= FALSE
;
2195 if (r_symndx
< symtab_hdr
->sh_info
)
2197 sym
= local_syms
+ r_symndx
;
2198 sec
= local_sections
[r_symndx
];
2199 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, sec
, rel
);
2203 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2204 while (h
->root
.type
== bfd_link_hash_indirect
2205 || h
->root
.type
== bfd_link_hash_warning
)
2206 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2208 if (h
->root
.type
== bfd_link_hash_defined
2209 || h
->root
.type
== bfd_link_hash_defweak
)
2211 sec
= h
->root
.u
.def
.section
;
2212 if (sec
->output_section
== NULL
)
2214 /* Set a flag that will be cleared later if we find a
2215 relocation value for this symbol. output_section
2216 is typically NULL for symbols satisfied by a shared
2218 unresolved_reloc
= TRUE
;
2222 relocation
= (h
->root
.u
.def
.value
2223 + sec
->output_section
->vma
2224 + sec
->output_offset
);
2226 else if (h
->root
.type
== bfd_link_hash_undefweak
)
2228 else if (info
->shared
2229 && !info
->no_undefined
2230 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
2234 if (! ((*info
->callbacks
->undefined_symbol
)
2235 (info
, h
->root
.root
.string
, input_bfd
,
2236 input_section
, rel
->r_offset
,
2237 (!info
->shared
|| info
->no_undefined
2238 || ELF_ST_VISIBILITY (h
->other
)))))
2246 case R_390_GOTPLT12
:
2247 case R_390_GOTPLT16
:
2248 case R_390_GOTPLT32
:
2249 case R_390_GOTPLT64
:
2250 case R_390_GOTPLTENT
:
2251 /* There are three cases for a GOTPLT relocation. 1) The
2252 relocation is against the jump slot entry of a plt that
2253 will get emitted to the output file. 2) The relocation
2254 is against the jump slot of a plt entry that has been
2255 removed. elf_s390_adjust_gotplt has created a GOT entry
2256 as replacement. 3) The relocation is against a local symbol.
2257 Cases 2) and 3) are the same as the GOT relocation code
2258 so we just have to test for case 1 and fall through for
2260 if (h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
2265 Current offset - size first entry / entry size. */
2266 plt_index
= (h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
) /
2269 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
2271 relocation
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
2272 unresolved_reloc
= FALSE
;
2274 if (r_type
== R_390_GOTPLTENT
)
2275 relocation
+= htab
->sgot
->output_section
->vma
;
2285 /* Relocation is to the entry for this symbol in the global
2287 if (htab
->sgot
== NULL
)
2294 off
= h
->got
.offset
;
2295 dyn
= htab
->elf
.dynamic_sections_created
;
2296 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
, h
)
2300 || (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
))
2301 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)))
2303 /* This is actually a static link, or it is a
2304 -Bsymbolic link and the symbol is defined
2305 locally, or the symbol was forced to be local
2306 because of a version file. We must initialize
2307 this entry in the global offset table. Since the
2308 offset must always be a multiple of 2, we use the
2309 least significant bit to record whether we have
2310 initialized it already.
2312 When doing a dynamic link, we create a .rel.got
2313 relocation entry to initialize the value. This
2314 is done in the finish_dynamic_symbol routine. */
2319 bfd_put_64 (output_bfd
, relocation
,
2320 htab
->sgot
->contents
+ off
);
2325 unresolved_reloc
= FALSE
;
2329 if (local_got_offsets
== NULL
)
2332 off
= local_got_offsets
[r_symndx
];
2334 /* The offset must always be a multiple of 8. We use
2335 the least significant bit to record whether we have
2336 already generated the necessary reloc. */
2341 bfd_put_64 (output_bfd
, relocation
,
2342 htab
->sgot
->contents
+ off
);
2347 Elf_Internal_Rela outrel
;
2354 outrel
.r_offset
= (htab
->sgot
->output_section
->vma
2355 + htab
->sgot
->output_offset
2357 outrel
.r_info
= ELF64_R_INFO (0, R_390_RELATIVE
);
2358 outrel
.r_addend
= relocation
;
2360 loc
+= s
->reloc_count
++ * sizeof (Elf64_External_Rela
);
2361 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2364 local_got_offsets
[r_symndx
] |= 1;
2368 if (off
>= (bfd_vma
) -2)
2371 relocation
= htab
->sgot
->output_offset
+ off
;
2373 /* For @GOTENT the relocation is against the offset between
2374 the instruction and the symbols entry in the GOT and not
2375 between the start of the GOT and the symbols entry. We
2376 add the vma of the GOT to get the correct value. */
2377 if ( r_type
== R_390_GOTENT
2378 || r_type
== R_390_GOTPLTENT
)
2379 relocation
+= htab
->sgot
->output_section
->vma
;
2383 case R_390_GOTOFF16
:
2384 case R_390_GOTOFF32
:
2385 case R_390_GOTOFF64
:
2386 /* Relocation is relative to the start of the global offset
2389 /* Note that sgot->output_offset is not involved in this
2390 calculation. We always want the start of .got. If we
2391 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2392 permitted by the ABI, we might have to change this
2394 relocation
-= htab
->sgot
->output_section
->vma
;
2398 case R_390_GOTPCDBL
:
2399 /* Use global offset table as symbol value. */
2400 relocation
= htab
->sgot
->output_section
->vma
;
2401 unresolved_reloc
= FALSE
;
2404 case R_390_PLT16DBL
:
2406 case R_390_PLT32DBL
:
2408 /* Relocation is to the entry for this symbol in the
2409 procedure linkage table. */
2411 /* Resolve a PLT32 reloc against a local symbol directly,
2412 without using the procedure linkage table. */
2416 if (h
->plt
.offset
== (bfd_vma
) -1
2417 || htab
->splt
== NULL
)
2419 /* We didn't make a PLT entry for this symbol. This
2420 happens when statically linking PIC code, or when
2421 using -Bsymbolic. */
2425 relocation
= (htab
->splt
->output_section
->vma
2426 + htab
->splt
->output_offset
2428 unresolved_reloc
= FALSE
;
2431 case R_390_PLTOFF16
:
2432 case R_390_PLTOFF32
:
2433 case R_390_PLTOFF64
:
2434 /* Relocation is to the entry for this symbol in the
2435 procedure linkage table relative to the start of the GOT. */
2437 /* For local symbols or if we didn't make a PLT entry for
2438 this symbol resolve the symbol directly. */
2440 || h
->plt
.offset
== (bfd_vma
) -1
2441 || htab
->splt
== NULL
)
2443 relocation
-= htab
->sgot
->output_section
->vma
;
2447 relocation
= (htab
->splt
->output_section
->vma
2448 + htab
->splt
->output_offset
2450 - htab
->sgot
->output_section
->vma
);
2451 unresolved_reloc
= FALSE
;
2463 /* r_symndx will be zero only for relocs against symbols
2464 from removed linkonce sections, or sections discarded by
2467 || (input_section
->flags
& SEC_ALLOC
) == 0)
2471 && ((r_type
!= R_390_PC16
2472 && r_type
!= R_390_PC16DBL
2473 && r_type
!= R_390_PC32
2474 && r_type
!= R_390_PC32DBL
2475 && r_type
!= R_390_PC64
)
2478 && (! info
->symbolic
2479 || (h
->elf_link_hash_flags
2480 & ELF_LINK_HASH_DEF_REGULAR
) == 0))))
2484 && (h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0
2485 && (((h
->elf_link_hash_flags
2486 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0
2487 && (h
->elf_link_hash_flags
2488 & ELF_LINK_HASH_DEF_REGULAR
) == 0)
2489 || h
->root
.type
== bfd_link_hash_undefweak
2490 || h
->root
.type
== bfd_link_hash_undefined
)))
2492 Elf_Internal_Rela outrel
;
2493 bfd_boolean skip
, relocate
;
2497 /* When generating a shared object, these relocations
2498 are copied into the output file to be resolved at run
2504 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2506 if (outrel
.r_offset
== (bfd_vma
) -1)
2508 else if (outrel
.r_offset
== (bfd_vma
) -2)
2509 skip
= TRUE
, relocate
= TRUE
;
2511 outrel
.r_offset
+= (input_section
->output_section
->vma
2512 + input_section
->output_offset
);
2515 memset (&outrel
, 0, sizeof outrel
);
2518 && (r_type
== R_390_PC16
2519 || r_type
== R_390_PC16DBL
2520 || r_type
== R_390_PC32
2521 || r_type
== R_390_PC32DBL
2522 || r_type
== R_390_PC64
2525 || (h
->elf_link_hash_flags
2526 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
2528 outrel
.r_info
= ELF64_R_INFO (h
->dynindx
, r_type
);
2529 outrel
.r_addend
= rel
->r_addend
;
2533 /* This symbol is local, or marked to become local. */
2535 outrel
.r_info
= ELF64_R_INFO (0, R_390_RELATIVE
);
2536 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2539 sreloc
= elf_section_data (input_section
)->sreloc
;
2543 loc
= sreloc
->contents
;
2544 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
2545 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2547 /* If this reloc is against an external symbol, we do
2548 not want to fiddle with the addend. Otherwise, we
2549 need to include the symbol value so that it becomes
2550 an addend for the dynamic reloc. */
2557 /* Relocations for tls literal pool entries. */
2558 case R_390_TLS_IE64
:
2561 Elf_Internal_Rela outrel
;
2565 outrel
.r_offset
= rel
->r_offset
2566 + input_section
->output_section
->vma
2567 + input_section
->output_offset
;
2568 outrel
.r_info
= ELF64_R_INFO (0, R_390_RELATIVE
);
2569 sreloc
= elf_section_data (input_section
)->sreloc
;
2572 loc
= sreloc
->contents
;
2573 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
2574 bfd_elf64_swap_reloc_out (output_bfd
, &outrel
, loc
);
2578 case R_390_TLS_GD64
:
2579 case R_390_TLS_GOTIE64
:
2580 r_type
= elf_s390_tls_transition (info
, r_type
, h
== NULL
);
2581 tls_type
= GOT_UNKNOWN
;
2582 if (h
== NULL
&& local_got_offsets
)
2583 tls_type
= elf_s390_local_got_tls_type (input_bfd
) [r_symndx
];
2586 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2587 if (!info
->shared
&& h
->dynindx
== -1 && tls_type
>= GOT_TLS_IE
)
2588 r_type
= R_390_TLS_LE64
;
2590 if (r_type
== R_390_TLS_GD64
&& tls_type
>= GOT_TLS_IE
)
2591 r_type
= R_390_TLS_IE64
;
2593 if (r_type
== R_390_TLS_LE64
)
2595 /* This relocation gets optimized away by the local exec
2596 access optimization. */
2597 BFD_ASSERT (! unresolved_reloc
);
2598 bfd_put_64 (output_bfd
, -tpoff (info
, relocation
),
2599 contents
+ rel
->r_offset
);
2603 if (htab
->sgot
== NULL
)
2607 off
= h
->got
.offset
;
2610 if (local_got_offsets
== NULL
)
2613 off
= local_got_offsets
[r_symndx
];
2622 Elf_Internal_Rela outrel
;
2626 if (htab
->srelgot
== NULL
)
2629 outrel
.r_offset
= (htab
->sgot
->output_section
->vma
2630 + htab
->sgot
->output_offset
+ off
);
2632 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
2633 if (r_type
== R_390_TLS_GD64
)
2634 dr_type
= R_390_TLS_DTPMOD
;
2636 dr_type
= R_390_TLS_TPOFF
;
2637 if (dr_type
== R_390_TLS_TPOFF
&& indx
== 0)
2638 outrel
.r_addend
= relocation
- dtpoff_base (info
);
2640 outrel
.r_addend
= 0;
2641 outrel
.r_info
= ELF64_R_INFO (indx
, dr_type
);
2642 loc
= htab
->srelgot
->contents
;
2643 loc
+= htab
->srelgot
->reloc_count
++
2644 * sizeof (Elf64_External_Rela
);
2645 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2647 if (r_type
== R_390_TLS_GD64
)
2651 BFD_ASSERT (! unresolved_reloc
);
2652 bfd_put_64 (output_bfd
,
2653 relocation
- dtpoff_base (info
),
2654 htab
->sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
2658 outrel
.r_info
= ELF64_R_INFO (indx
, R_390_TLS_DTPOFF
);
2659 outrel
.r_offset
+= GOT_ENTRY_SIZE
;
2660 outrel
.r_addend
= 0;
2661 htab
->srelgot
->reloc_count
++;
2662 loc
+= sizeof (Elf64_External_Rela
);
2663 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2670 local_got_offsets
[r_symndx
] |= 1;
2673 if (off
>= (bfd_vma
) -2)
2675 if (r_type
== ELF64_R_TYPE (rel
->r_info
))
2677 relocation
= htab
->sgot
->output_offset
+ off
;
2678 if (r_type
== R_390_TLS_IE64
|| r_type
== R_390_TLS_IEENT
)
2679 relocation
+= htab
->sgot
->output_section
->vma
;
2680 unresolved_reloc
= FALSE
;
2684 bfd_put_64 (output_bfd
, htab
->sgot
->output_offset
+ off
,
2685 contents
+ rel
->r_offset
);
2690 case R_390_TLS_GOTIE12
:
2691 case R_390_TLS_IEENT
:
2694 if (local_got_offsets
== NULL
)
2696 off
= local_got_offsets
[r_symndx
];
2698 goto emit_tls_relocs
;
2702 off
= h
->got
.offset
;
2703 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2704 if (info
->shared
|| h
->dynindx
!= -1 || tls_type
< GOT_TLS_IE
)
2705 goto emit_tls_relocs
;
2708 if (htab
->sgot
== NULL
)
2711 BFD_ASSERT (! unresolved_reloc
);
2712 bfd_put_64 (output_bfd
, -tpoff (info
, relocation
),
2713 htab
->sgot
->contents
+ off
);
2714 relocation
= htab
->sgot
->output_offset
+ off
;
2715 if (r_type
== R_390_TLS_IEENT
)
2716 relocation
+= htab
->sgot
->output_section
->vma
;
2717 unresolved_reloc
= FALSE
;
2720 case R_390_TLS_LDM64
:
2722 /* The literal pool entry this relocation refers to gets ignored
2723 by the optimized code of the local exec model. Do nothing
2724 and the value will turn out zero. */
2727 if (htab
->sgot
== NULL
)
2730 off
= htab
->tls_ldm_got
.offset
;
2735 Elf_Internal_Rela outrel
;
2738 if (htab
->srelgot
== NULL
)
2741 outrel
.r_offset
= (htab
->sgot
->output_section
->vma
2742 + htab
->sgot
->output_offset
+ off
);
2744 bfd_put_64 (output_bfd
, 0,
2745 htab
->sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
2746 outrel
.r_info
= ELF64_R_INFO (0, R_390_TLS_DTPMOD
);
2747 outrel
.r_addend
= 0;
2748 loc
= htab
->srelgot
->contents
;
2749 loc
+= htab
->srelgot
->reloc_count
++
2750 * sizeof (Elf64_External_Rela
);
2751 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2752 htab
->tls_ldm_got
.offset
|= 1;
2754 relocation
= htab
->sgot
->output_offset
+ off
;
2755 unresolved_reloc
= FALSE
;
2758 case R_390_TLS_LE64
:
2761 /* Linking a shared library with non-fpic code requires
2762 a R_390_TLS_TPOFF relocation. */
2763 Elf_Internal_Rela outrel
;
2768 outrel
.r_offset
= rel
->r_offset
2769 + input_section
->output_section
->vma
2770 + input_section
->output_offset
;
2771 if (h
!= NULL
&& h
->dynindx
!= -1)
2775 outrel
.r_info
= ELF64_R_INFO (indx
, R_390_TLS_TPOFF
);
2777 outrel
.r_addend
= relocation
- dtpoff_base (info
);
2779 outrel
.r_addend
= 0;
2780 sreloc
= elf_section_data (input_section
)->sreloc
;
2783 loc
= sreloc
->contents
;
2784 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
2785 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2789 BFD_ASSERT (! unresolved_reloc
);
2790 bfd_put_64 (output_bfd
, -tpoff (info
, relocation
),
2791 contents
+ rel
->r_offset
);
2795 case R_390_TLS_LDO64
:
2796 if (info
->shared
|| (input_section
->flags
& SEC_CODE
) == 0)
2797 relocation
-= dtpoff_base (info
);
2799 /* When converting LDO to LE, we must negate. */
2800 relocation
= -tpoff (info
, relocation
);
2803 /* Relocations for tls instructions. */
2804 case R_390_TLS_LOAD
:
2805 case R_390_TLS_GDCALL
:
2806 case R_390_TLS_LDCALL
:
2807 tls_type
= GOT_UNKNOWN
;
2808 if (h
== NULL
&& local_got_offsets
)
2809 tls_type
= elf_s390_local_got_tls_type (input_bfd
) [r_symndx
];
2811 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2813 if (tls_type
== GOT_TLS_GD
)
2816 if (r_type
== R_390_TLS_LOAD
)
2818 if (!info
->shared
&& (h
== NULL
|| h
->dynindx
== -1))
2820 /* IE->LE transition. Four valid cases:
2821 lg %rx,(0,%ry) -> sllg %rx,%ry,0
2822 lg %rx,(%ry,0) -> sllg %rx,%ry,0
2823 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
2824 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
2825 unsigned int insn0
, insn1
, ry
;
2827 insn0
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2828 insn1
= bfd_get_16 (input_bfd
, contents
+ rel
->r_offset
+ 4);
2829 if (insn1
!= 0x0004)
2830 invalid_tls_insn (input_bfd
, input_section
, rel
);
2832 if ((insn0
& 0xff00f000) == 0xe3000000)
2833 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
2834 ry
= (insn0
& 0x000f0000);
2835 else if ((insn0
& 0xff0f0000) == 0xe3000000)
2836 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
2837 ry
= (insn0
& 0x0000f000) << 4;
2838 else if ((insn0
& 0xff00f000) == 0xe300c000)
2839 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
2840 ry
= (insn0
& 0x000f0000);
2841 else if ((insn0
& 0xff0f0000) == 0xe30c0000)
2842 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
2843 ry
= (insn0
& 0x0000f000) << 4;
2845 invalid_tls_insn (input_bfd
, input_section
, rel
);
2846 insn0
= 0xeb000000 | (insn0
& 0x00f00000) | ry
;
2848 bfd_put_32 (output_bfd
, insn0
, contents
+ rel
->r_offset
);
2849 bfd_put_16 (output_bfd
, insn1
, contents
+ rel
->r_offset
+ 4);
2852 else if (r_type
== R_390_TLS_GDCALL
)
2854 unsigned int insn0
, insn1
;
2856 insn0
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2857 insn1
= bfd_get_16 (input_bfd
, contents
+ rel
->r_offset
+ 4);
2858 if ((insn0
& 0xffff0000) != 0xc0e50000)
2859 invalid_tls_insn (input_bfd
, input_section
, rel
);
2860 if (!info
->shared
&& (h
== NULL
|| h
->dynindx
== -1))
2862 /* GD->LE transition.
2863 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
2869 /* GD->IE transition.
2870 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
2874 bfd_put_32 (output_bfd
, insn0
, contents
+ rel
->r_offset
);
2875 bfd_put_16 (output_bfd
, insn1
, contents
+ rel
->r_offset
+ 4);
2877 else if (r_type
== R_390_TLS_LDCALL
)
2881 unsigned int insn0
, insn1
;
2883 insn0
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2884 insn1
= bfd_get_16 (input_bfd
, contents
+ rel
->r_offset
+ 4);
2885 if ((insn0
& 0xffff0000) != 0xc0e50000)
2886 invalid_tls_insn (input_bfd
, input_section
, rel
);
2887 /* LD->LE transition.
2888 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
2891 bfd_put_32 (output_bfd
, insn0
, contents
+ rel
->r_offset
);
2892 bfd_put_16 (output_bfd
, insn1
, contents
+ rel
->r_offset
+ 4);
2901 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
2902 because such sections are not SEC_ALLOC and thus ld.so will
2903 not process them. */
2904 if (unresolved_reloc
2905 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
2906 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0))
2907 (*_bfd_error_handler
)
2908 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
2909 bfd_archive_filename (input_bfd
),
2910 bfd_get_section_name (input_bfd
, input_section
),
2911 (long) rel
->r_offset
,
2912 h
->root
.root
.string
);
2914 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2915 contents
, rel
->r_offset
,
2916 relocation
, rel
->r_addend
);
2918 if (r
!= bfd_reloc_ok
)
2923 name
= h
->root
.root
.string
;
2926 name
= bfd_elf_string_from_elf_section (input_bfd
,
2927 symtab_hdr
->sh_link
,
2932 name
= bfd_section_name (input_bfd
, sec
);
2935 if (r
== bfd_reloc_overflow
)
2938 if (! ((*info
->callbacks
->reloc_overflow
)
2939 (info
, name
, howto
->name
, (bfd_vma
) 0,
2940 input_bfd
, input_section
, rel
->r_offset
)))
2945 (*_bfd_error_handler
)
2946 (_("%s(%s+0x%lx): reloc against `%s': error %d"),
2947 bfd_archive_filename (input_bfd
),
2948 bfd_get_section_name (input_bfd
, input_section
),
2949 (long) rel
->r_offset
, name
, (int) r
);
2958 /* Finish up dynamic symbol handling. We set the contents of various
2959 dynamic sections here. */
2962 elf_s390_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
2964 struct bfd_link_info
*info
;
2965 struct elf_link_hash_entry
*h
;
2966 Elf_Internal_Sym
*sym
;
2968 struct elf_s390_link_hash_table
*htab
;
2970 htab
= elf_s390_hash_table (info
);
2972 if (h
->plt
.offset
!= (bfd_vma
) -1)
2976 Elf_Internal_Rela rela
;
2979 /* This symbol has an entry in the procedure linkage table. Set
2982 if (h
->dynindx
== -1
2983 || htab
->splt
== NULL
2984 || htab
->sgotplt
== NULL
2985 || htab
->srelplt
== NULL
)
2989 Current offset - size first entry / entry size. */
2990 plt_index
= (h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
) / PLT_ENTRY_SIZE
;
2992 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
2994 got_offset
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
2996 /* Fill in the blueprint of a PLT. */
2997 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD0
,
2998 htab
->splt
->contents
+ h
->plt
.offset
);
2999 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD1
,
3000 htab
->splt
->contents
+ h
->plt
.offset
+ 4);
3001 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD2
,
3002 htab
->splt
->contents
+ h
->plt
.offset
+ 8);
3003 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD3
,
3004 htab
->splt
->contents
+ h
->plt
.offset
+ 12);
3005 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD4
,
3006 htab
->splt
->contents
+ h
->plt
.offset
+ 16);
3007 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD5
,
3008 htab
->splt
->contents
+ h
->plt
.offset
+ 20);
3009 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD6
,
3010 htab
->splt
->contents
+ h
->plt
.offset
+ 24);
3011 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD7
,
3012 htab
->splt
->contents
+ h
->plt
.offset
+ 28);
3013 /* Fixup the relative address to the GOT entry */
3014 bfd_put_32 (output_bfd
,
3015 (htab
->sgotplt
->output_section
->vma
+
3016 htab
->sgotplt
->output_offset
+ got_offset
3017 - (htab
->splt
->output_section
->vma
+ h
->plt
.offset
))/2,
3018 htab
->splt
->contents
+ h
->plt
.offset
+ 2);
3019 /* Fixup the relative branch to PLT 0 */
3020 bfd_put_32 (output_bfd
, - (PLT_FIRST_ENTRY_SIZE
+
3021 (PLT_ENTRY_SIZE
* plt_index
) + 22)/2,
3022 htab
->splt
->contents
+ h
->plt
.offset
+ 24);
3023 /* Fixup offset into symbol table */
3024 bfd_put_32 (output_bfd
, plt_index
* sizeof (Elf64_External_Rela
),
3025 htab
->splt
->contents
+ h
->plt
.offset
+ 28);
3027 /* Fill in the entry in the global offset table.
3028 Points to instruction after GOT offset. */
3029 bfd_put_64 (output_bfd
,
3030 (htab
->splt
->output_section
->vma
3031 + htab
->splt
->output_offset
3034 htab
->sgotplt
->contents
+ got_offset
);
3036 /* Fill in the entry in the .rela.plt section. */
3037 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
3038 + htab
->sgotplt
->output_offset
3040 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_390_JMP_SLOT
);
3042 loc
= htab
->srelplt
->contents
+ plt_index
* sizeof (Elf64_External_Rela
);
3043 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
3045 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
3047 /* Mark the symbol as undefined, rather than as defined in
3048 the .plt section. Leave the value alone. This is a clue
3049 for the dynamic linker, to make function pointer
3050 comparisons work between an application and shared
3052 sym
->st_shndx
= SHN_UNDEF
;
3056 if (h
->got
.offset
!= (bfd_vma
) -1
3057 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_GD
3058 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_IE
3059 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_IE_NLT
)
3061 Elf_Internal_Rela rela
;
3064 /* This symbol has an entry in the global offset table. Set it
3066 if (htab
->sgot
== NULL
|| htab
->srelgot
== NULL
)
3069 rela
.r_offset
= (htab
->sgot
->output_section
->vma
3070 + htab
->sgot
->output_offset
3071 + (h
->got
.offset
&~ (bfd_vma
) 1));
3073 /* If this is a static link, or it is a -Bsymbolic link and the
3074 symbol is defined locally or was forced to be local because
3075 of a version file, we just want to emit a RELATIVE reloc.
3076 The entry in the global offset table will already have been
3077 initialized in the relocate_section function. */
3081 || (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
))
3082 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
))
3084 BFD_ASSERT((h
->got
.offset
& 1) != 0);
3085 rela
.r_info
= ELF64_R_INFO (0, R_390_RELATIVE
);
3086 rela
.r_addend
= (h
->root
.u
.def
.value
3087 + h
->root
.u
.def
.section
->output_section
->vma
3088 + h
->root
.u
.def
.section
->output_offset
);
3092 BFD_ASSERT((h
->got
.offset
& 1) == 0);
3093 bfd_put_64 (output_bfd
, (bfd_vma
) 0, htab
->sgot
->contents
+ h
->got
.offset
);
3094 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_390_GLOB_DAT
);
3098 loc
= htab
->srelgot
->contents
;
3099 loc
+= htab
->srelgot
->reloc_count
++ * sizeof (Elf64_External_Rela
);
3100 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
3103 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
3105 Elf_Internal_Rela rela
;
3108 /* This symbols needs a copy reloc. Set it up. */
3110 if (h
->dynindx
== -1
3111 || (h
->root
.type
!= bfd_link_hash_defined
3112 && h
->root
.type
!= bfd_link_hash_defweak
)
3113 || htab
->srelbss
== NULL
)
3116 rela
.r_offset
= (h
->root
.u
.def
.value
3117 + h
->root
.u
.def
.section
->output_section
->vma
3118 + h
->root
.u
.def
.section
->output_offset
);
3119 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_390_COPY
);
3121 loc
= htab
->srelbss
->contents
;
3122 loc
+= htab
->srelbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
3123 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
3126 /* Mark some specially defined symbols as absolute. */
3127 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
3128 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0
3129 || strcmp (h
->root
.root
.string
, "_PROCEDURE_LINKAGE_TABLE_") == 0)
3130 sym
->st_shndx
= SHN_ABS
;
3135 /* Used to decide how to sort relocs in an optimal manner for the
3136 dynamic linker, before writing them out. */
3138 static enum elf_reloc_type_class
3139 elf_s390_reloc_type_class (rela
)
3140 const Elf_Internal_Rela
*rela
;
3142 switch ((int) ELF64_R_TYPE (rela
->r_info
))
3144 case R_390_RELATIVE
:
3145 return reloc_class_relative
;
3146 case R_390_JMP_SLOT
:
3147 return reloc_class_plt
;
3149 return reloc_class_copy
;
3151 return reloc_class_normal
;
3155 /* Finish up the dynamic sections. */
3158 elf_s390_finish_dynamic_sections (output_bfd
, info
)
3160 struct bfd_link_info
*info
;
3162 struct elf_s390_link_hash_table
*htab
;
3166 htab
= elf_s390_hash_table (info
);
3167 dynobj
= htab
->elf
.dynobj
;
3168 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
3170 if (htab
->elf
.dynamic_sections_created
)
3172 Elf64_External_Dyn
*dyncon
, *dynconend
;
3174 if (sdyn
== NULL
|| htab
->sgot
== NULL
)
3177 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
3178 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
3179 for (; dyncon
< dynconend
; dyncon
++)
3181 Elf_Internal_Dyn dyn
;
3184 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3192 dyn
.d_un
.d_ptr
= htab
->sgot
->output_section
->vma
;
3196 dyn
.d_un
.d_ptr
= htab
->srelplt
->output_section
->vma
;
3200 s
= htab
->srelplt
->output_section
;
3201 if (s
->_cooked_size
!= 0)
3202 dyn
.d_un
.d_val
= s
->_cooked_size
;
3204 dyn
.d_un
.d_val
= s
->_raw_size
;
3208 /* The procedure linkage table relocs (DT_JMPREL) should
3209 not be included in the overall relocs (DT_RELA).
3210 Therefore, we override the DT_RELASZ entry here to
3211 make it not include the JMPREL relocs. Since the
3212 linker script arranges for .rela.plt to follow all
3213 other relocation sections, we don't have to worry
3214 about changing the DT_RELA entry. */
3215 s
= htab
->srelplt
->output_section
;
3216 if (s
->_cooked_size
!= 0)
3217 dyn
.d_un
.d_val
-= s
->_cooked_size
;
3219 dyn
.d_un
.d_val
-= s
->_raw_size
;
3223 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3226 /* Fill in the special first entry in the procedure linkage table. */
3227 if (htab
->splt
&& htab
->splt
->_raw_size
> 0)
3229 /* fill in blueprint for plt 0 entry */
3230 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD0
,
3231 htab
->splt
->contents
);
3232 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD1
,
3233 htab
->splt
->contents
+4 );
3234 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD3
,
3235 htab
->splt
->contents
+12 );
3236 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD4
,
3237 htab
->splt
->contents
+16 );
3238 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD5
,
3239 htab
->splt
->contents
+20 );
3240 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD6
,
3241 htab
->splt
->contents
+ 24);
3242 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD7
,
3243 htab
->splt
->contents
+ 28 );
3244 /* Fixup relative address to start of GOT */
3245 bfd_put_32 (output_bfd
,
3246 (htab
->sgotplt
->output_section
->vma
+
3247 htab
->sgotplt
->output_offset
3248 - htab
->splt
->output_section
->vma
- 6)/2,
3249 htab
->splt
->contents
+ 8);
3251 elf_section_data (htab
->splt
->output_section
)
3252 ->this_hdr
.sh_entsize
= PLT_ENTRY_SIZE
;
3257 /* Fill in the first three entries in the global offset table. */
3258 if (htab
->sgotplt
->_raw_size
> 0)
3260 bfd_put_64 (output_bfd
,
3261 (sdyn
== NULL
? (bfd_vma
) 0
3262 : sdyn
->output_section
->vma
+ sdyn
->output_offset
),
3263 htab
->sgotplt
->contents
);
3264 /* One entry for shared object struct ptr. */
3265 bfd_put_64 (output_bfd
, (bfd_vma
) 0, htab
->sgotplt
->contents
+ 8);
3266 /* One entry for _dl_runtime_resolve. */
3267 bfd_put_64 (output_bfd
, (bfd_vma
) 0, htab
->sgotplt
->contents
+ 12);
3270 elf_section_data (htab
->sgot
->output_section
)
3271 ->this_hdr
.sh_entsize
= 8;
3276 /* Why was the hash table entry size definition changed from
3277 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3278 this is the only reason for the s390_elf64_size_info structure. */
3280 const struct elf_size_info s390_elf64_size_info
=
3282 sizeof (Elf64_External_Ehdr
),
3283 sizeof (Elf64_External_Phdr
),
3284 sizeof (Elf64_External_Shdr
),
3285 sizeof (Elf64_External_Rel
),
3286 sizeof (Elf64_External_Rela
),
3287 sizeof (Elf64_External_Sym
),
3288 sizeof (Elf64_External_Dyn
),
3289 sizeof (Elf_External_Note
),
3290 8, /* hash-table entry size. */
3291 1, /* internal relocations per external relocations. */
3292 64, /* arch_size. */
3293 8, /* file_align. */
3294 ELFCLASS64
, EV_CURRENT
,
3295 bfd_elf64_write_out_phdrs
,
3296 bfd_elf64_write_shdrs_and_ehdr
,
3297 bfd_elf64_write_relocs
,
3298 bfd_elf64_swap_symbol_in
,
3299 bfd_elf64_swap_symbol_out
,
3300 bfd_elf64_slurp_reloc_table
,
3301 bfd_elf64_slurp_symbol_table
,
3302 bfd_elf64_swap_dyn_in
,
3303 bfd_elf64_swap_dyn_out
,
3304 bfd_elf64_swap_reloc_in
,
3305 bfd_elf64_swap_reloc_out
,
3306 bfd_elf64_swap_reloca_in
,
3307 bfd_elf64_swap_reloca_out
3310 #define TARGET_BIG_SYM bfd_elf64_s390_vec
3311 #define TARGET_BIG_NAME "elf64-s390"
3312 #define ELF_ARCH bfd_arch_s390
3313 #define ELF_MACHINE_CODE EM_S390
3314 #define ELF_MACHINE_ALT1 EM_S390_OLD
3315 #define ELF_MAXPAGESIZE 0x1000
3317 #define elf_backend_size_info s390_elf64_size_info
3319 #define elf_backend_can_gc_sections 1
3320 #define elf_backend_can_refcount 1
3321 #define elf_backend_want_got_plt 1
3322 #define elf_backend_plt_readonly 1
3323 #define elf_backend_want_plt_sym 0
3324 #define elf_backend_got_header_size 24
3325 #define elf_backend_plt_header_size PLT_ENTRY_SIZE
3326 #define elf_backend_rela_normal 1
3328 #define elf_info_to_howto elf_s390_info_to_howto
3330 #define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3331 #define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3332 #define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3334 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3335 #define elf_backend_check_relocs elf_s390_check_relocs
3336 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3337 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3338 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3339 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3340 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3341 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3342 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3343 #define elf_backend_relocate_section elf_s390_relocate_section
3344 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3345 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3347 #define bfd_elf64_mkobject elf_s390_mkobject
3348 #define elf_backend_object_p elf_s390_object_p
3350 #include "elf64-target.h"