1 /* IBM S/390-specific support for 64-bit ELF
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
3 Free Software Foundation, Inc.
4 Contributed Martin Schwidefsky (schwidefsky@de.ibm.com).
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
29 static reloc_howto_type
*elf_s390_reloc_type_lookup
30 PARAMS ((bfd
*, bfd_reloc_code_real_type
));
31 static void elf_s390_info_to_howto
32 PARAMS ((bfd
*, arelent
*, Elf_Internal_Rela
*));
33 static bfd_boolean elf_s390_is_local_label_name
34 PARAMS ((bfd
*, const char *));
35 static struct bfd_hash_entry
*link_hash_newfunc
36 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
37 static struct bfd_link_hash_table
*elf_s390_link_hash_table_create
39 static bfd_boolean create_got_section
40 PARAMS((bfd
*, struct bfd_link_info
*));
41 static bfd_boolean elf_s390_create_dynamic_sections
42 PARAMS((bfd
*, struct bfd_link_info
*));
43 static void elf_s390_copy_indirect_symbol
44 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*,
45 struct elf_link_hash_entry
*));
46 static bfd_boolean elf_s390_check_relocs
47 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
48 const Elf_Internal_Rela
*));
49 struct elf_s390_link_hash_entry
;
50 static void elf_s390_adjust_gotplt
51 PARAMS ((struct elf_s390_link_hash_entry
*));
52 static bfd_boolean elf_s390_adjust_dynamic_symbol
53 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
54 static bfd_boolean allocate_dynrelocs
55 PARAMS ((struct elf_link_hash_entry
*, PTR
));
56 static bfd_boolean readonly_dynrelocs
57 PARAMS ((struct elf_link_hash_entry
*, PTR
));
58 static bfd_boolean elf_s390_size_dynamic_sections
59 PARAMS ((bfd
*, struct bfd_link_info
*));
60 static bfd_boolean elf_s390_relocate_section
61 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
62 Elf_Internal_Rela
*, Elf_Internal_Sym
*, asection
**));
63 static bfd_boolean elf_s390_finish_dynamic_symbol
64 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*,
66 static enum elf_reloc_type_class elf_s390_reloc_type_class
67 PARAMS ((const Elf_Internal_Rela
*));
68 static bfd_boolean elf_s390_finish_dynamic_sections
69 PARAMS ((bfd
*, struct bfd_link_info
*));
70 static bfd_boolean elf_s390_object_p
72 static int elf_s390_tls_transition
73 PARAMS ((struct bfd_link_info
*, int, int));
74 static bfd_reloc_status_type s390_tls_reloc
75 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
76 static bfd_vma dtpoff_base
77 PARAMS ((struct bfd_link_info
*));
79 PARAMS ((struct bfd_link_info
*, bfd_vma
));
80 static void invalid_tls_insn
81 PARAMS ((bfd
*, asection
*, Elf_Internal_Rela
*));
82 static bfd_reloc_status_type s390_elf_ldisp_reloc
83 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
87 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
88 from smaller values. Start with zero, widen, *then* decrement. */
89 #define MINUS_ONE (((bfd_vma)0) - 1)
91 /* The relocation "howto" table. */
92 static reloc_howto_type elf_howto_table
[] =
94 HOWTO (R_390_NONE
, /* type */
96 0, /* size (0 = byte, 1 = short, 2 = long) */
98 FALSE
, /* pc_relative */
100 complain_overflow_dont
, /* complain_on_overflow */
101 bfd_elf_generic_reloc
, /* special_function */
102 "R_390_NONE", /* name */
103 FALSE
, /* partial_inplace */
106 FALSE
), /* pcrel_offset */
108 HOWTO(R_390_8
, 0, 0, 8, FALSE
, 0, complain_overflow_bitfield
,
109 bfd_elf_generic_reloc
, "R_390_8", FALSE
, 0,0x000000ff, FALSE
),
110 HOWTO(R_390_12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
111 bfd_elf_generic_reloc
, "R_390_12", FALSE
, 0,0x00000fff, FALSE
),
112 HOWTO(R_390_16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
113 bfd_elf_generic_reloc
, "R_390_16", FALSE
, 0,0x0000ffff, FALSE
),
114 HOWTO(R_390_32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
115 bfd_elf_generic_reloc
, "R_390_32", FALSE
, 0,0xffffffff, FALSE
),
116 HOWTO(R_390_PC32
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
117 bfd_elf_generic_reloc
, "R_390_PC32", FALSE
, 0,0xffffffff, TRUE
),
118 HOWTO(R_390_GOT12
, 0, 1, 12, FALSE
, 0, complain_overflow_bitfield
,
119 bfd_elf_generic_reloc
, "R_390_GOT12", FALSE
, 0,0x00000fff, FALSE
),
120 HOWTO(R_390_GOT32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
121 bfd_elf_generic_reloc
, "R_390_GOT32", FALSE
, 0,0xffffffff, FALSE
),
122 HOWTO(R_390_PLT32
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
123 bfd_elf_generic_reloc
, "R_390_PLT32", FALSE
, 0,0xffffffff, TRUE
),
124 HOWTO(R_390_COPY
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
125 bfd_elf_generic_reloc
, "R_390_COPY", FALSE
, 0,MINUS_ONE
, FALSE
),
126 HOWTO(R_390_GLOB_DAT
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
127 bfd_elf_generic_reloc
, "R_390_GLOB_DAT", FALSE
, 0,MINUS_ONE
, FALSE
),
128 HOWTO(R_390_JMP_SLOT
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
129 bfd_elf_generic_reloc
, "R_390_JMP_SLOT", FALSE
, 0,MINUS_ONE
, FALSE
),
130 HOWTO(R_390_RELATIVE
, 0, 4, 64, TRUE
, 0, complain_overflow_bitfield
,
131 bfd_elf_generic_reloc
, "R_390_RELATIVE", FALSE
, 0,MINUS_ONE
, FALSE
),
132 HOWTO(R_390_GOTOFF32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
133 bfd_elf_generic_reloc
, "R_390_GOTOFF32", FALSE
, 0,MINUS_ONE
, FALSE
),
134 HOWTO(R_390_GOTPC
, 0, 4, 64, TRUE
, 0, complain_overflow_bitfield
,
135 bfd_elf_generic_reloc
, "R_390_GOTPC", FALSE
, 0,MINUS_ONE
, TRUE
),
136 HOWTO(R_390_GOT16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
137 bfd_elf_generic_reloc
, "R_390_GOT16", FALSE
, 0,0x0000ffff, FALSE
),
138 HOWTO(R_390_PC16
, 0, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
139 bfd_elf_generic_reloc
, "R_390_PC16", FALSE
, 0,0x0000ffff, TRUE
),
140 HOWTO(R_390_PC16DBL
, 1, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
141 bfd_elf_generic_reloc
, "R_390_PC16DBL", FALSE
, 0,0x0000ffff, TRUE
),
142 HOWTO(R_390_PLT16DBL
, 1, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
143 bfd_elf_generic_reloc
, "R_390_PLT16DBL", FALSE
, 0,0x0000ffff, TRUE
),
144 HOWTO(R_390_PC32DBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
145 bfd_elf_generic_reloc
, "R_390_PC32DBL", FALSE
, 0,0xffffffff, TRUE
),
146 HOWTO(R_390_PLT32DBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
147 bfd_elf_generic_reloc
, "R_390_PLT32DBL", FALSE
, 0,0xffffffff, TRUE
),
148 HOWTO(R_390_GOTPCDBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
149 bfd_elf_generic_reloc
, "R_390_GOTPCDBL", FALSE
, 0,MINUS_ONE
, TRUE
),
150 HOWTO(R_390_64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
151 bfd_elf_generic_reloc
, "R_390_64", FALSE
, 0,MINUS_ONE
, FALSE
),
152 HOWTO(R_390_PC64
, 0, 4, 64, TRUE
, 0, complain_overflow_bitfield
,
153 bfd_elf_generic_reloc
, "R_390_PC64", FALSE
, 0,MINUS_ONE
, TRUE
),
154 HOWTO(R_390_GOT64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
155 bfd_elf_generic_reloc
, "R_390_GOT64", FALSE
, 0,MINUS_ONE
, FALSE
),
156 HOWTO(R_390_PLT64
, 0, 4, 64, TRUE
, 0, complain_overflow_bitfield
,
157 bfd_elf_generic_reloc
, "R_390_PLT64", FALSE
, 0,MINUS_ONE
, TRUE
),
158 HOWTO(R_390_GOTENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
159 bfd_elf_generic_reloc
, "R_390_GOTENT", FALSE
, 0,MINUS_ONE
, TRUE
),
160 HOWTO(R_390_GOTOFF16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
161 bfd_elf_generic_reloc
, "R_390_GOTOFF16", FALSE
, 0,0x0000ffff, FALSE
),
162 HOWTO(R_390_GOTOFF64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
163 bfd_elf_generic_reloc
, "R_390_GOTOFF64", FALSE
, 0,MINUS_ONE
, FALSE
),
164 HOWTO(R_390_GOTPLT12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
165 bfd_elf_generic_reloc
, "R_390_GOTPLT12", FALSE
, 0,0x00000fff, FALSE
),
166 HOWTO(R_390_GOTPLT16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
167 bfd_elf_generic_reloc
, "R_390_GOTPLT16", FALSE
, 0,0x0000ffff, FALSE
),
168 HOWTO(R_390_GOTPLT32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
169 bfd_elf_generic_reloc
, "R_390_GOTPLT32", FALSE
, 0,0xffffffff, FALSE
),
170 HOWTO(R_390_GOTPLT64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
171 bfd_elf_generic_reloc
, "R_390_GOTPLT64", FALSE
, 0,MINUS_ONE
, FALSE
),
172 HOWTO(R_390_GOTPLTENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
173 bfd_elf_generic_reloc
, "R_390_GOTPLTENT",FALSE
, 0,MINUS_ONE
, TRUE
),
174 HOWTO(R_390_PLTOFF16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
175 bfd_elf_generic_reloc
, "R_390_PLTOFF16", FALSE
, 0,0x0000ffff, FALSE
),
176 HOWTO(R_390_PLTOFF32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
177 bfd_elf_generic_reloc
, "R_390_PLTOFF32", FALSE
, 0,0xffffffff, FALSE
),
178 HOWTO(R_390_PLTOFF64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
179 bfd_elf_generic_reloc
, "R_390_PLTOFF64", FALSE
, 0,MINUS_ONE
, FALSE
),
180 HOWTO(R_390_TLS_LOAD
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
181 s390_tls_reloc
, "R_390_TLS_LOAD", FALSE
, 0, 0, FALSE
),
182 HOWTO(R_390_TLS_GDCALL
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
183 s390_tls_reloc
, "R_390_TLS_GDCALL", FALSE
, 0, 0, FALSE
),
184 HOWTO(R_390_TLS_LDCALL
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
185 s390_tls_reloc
, "R_390_TLS_LDCALL", FALSE
, 0, 0, FALSE
),
186 EMPTY_HOWTO (R_390_TLS_GD32
), /* Empty entry for R_390_TLS_GD32. */
187 HOWTO(R_390_TLS_GD64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
188 bfd_elf_generic_reloc
, "R_390_TLS_GD64", FALSE
, 0, MINUS_ONE
, FALSE
),
189 HOWTO(R_390_TLS_GOTIE12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
190 bfd_elf_generic_reloc
, "R_390_TLS_GOTIE12", FALSE
, 0, 0x00000fff, FALSE
),
191 EMPTY_HOWTO (R_390_TLS_GOTIE32
), /* Empty entry for R_390_TLS_GOTIE32. */
192 HOWTO(R_390_TLS_GOTIE64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
193 bfd_elf_generic_reloc
, "R_390_TLS_GOTIE64", FALSE
, 0, MINUS_ONE
, FALSE
),
194 EMPTY_HOWTO (R_390_TLS_LDM32
), /* Empty entry for R_390_TLS_LDM32. */
195 HOWTO(R_390_TLS_LDM64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
196 bfd_elf_generic_reloc
, "R_390_TLS_LDM64", FALSE
, 0, MINUS_ONE
, FALSE
),
197 EMPTY_HOWTO (R_390_TLS_IE32
), /* Empty entry for R_390_TLS_IE32. */
198 HOWTO(R_390_TLS_IE64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
199 bfd_elf_generic_reloc
, "R_390_TLS_IE64", FALSE
, 0, MINUS_ONE
, FALSE
),
200 HOWTO(R_390_TLS_IEENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
201 bfd_elf_generic_reloc
, "R_390_TLS_IEENT", FALSE
, 0, MINUS_ONE
, TRUE
),
202 EMPTY_HOWTO (R_390_TLS_LE32
), /* Empty entry for R_390_TLS_LE32. */
203 HOWTO(R_390_TLS_LE64
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
204 bfd_elf_generic_reloc
, "R_390_TLS_LE64", FALSE
, 0, MINUS_ONE
, FALSE
),
205 EMPTY_HOWTO (R_390_TLS_LDO32
), /* Empty entry for R_390_TLS_LDO32. */
206 HOWTO(R_390_TLS_LDO64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
207 bfd_elf_generic_reloc
, "R_390_TLS_LDO64", FALSE
, 0, MINUS_ONE
, FALSE
),
208 HOWTO(R_390_TLS_DTPMOD
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
209 bfd_elf_generic_reloc
, "R_390_TLS_DTPMOD", FALSE
, 0, MINUS_ONE
, FALSE
),
210 HOWTO(R_390_TLS_DTPOFF
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
211 bfd_elf_generic_reloc
, "R_390_TLS_DTPOFF", FALSE
, 0, MINUS_ONE
, FALSE
),
212 HOWTO(R_390_TLS_TPOFF
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
213 bfd_elf_generic_reloc
, "R_390_TLS_TPOFF", FALSE
, 0, MINUS_ONE
, FALSE
),
214 HOWTO(R_390_20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
215 s390_elf_ldisp_reloc
, "R_390_20", FALSE
, 0,0x0fffff00, FALSE
),
216 HOWTO(R_390_GOT20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
217 s390_elf_ldisp_reloc
, "R_390_GOT20", FALSE
, 0,0x0fffff00, FALSE
),
218 HOWTO(R_390_GOTPLT20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
219 s390_elf_ldisp_reloc
, "R_390_GOTPLT20", FALSE
, 0,0x0fffff00, FALSE
),
220 HOWTO(R_390_TLS_GOTIE20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
221 s390_elf_ldisp_reloc
, "R_390_TLS_GOTIE20", FALSE
, 0,0x0fffff00, FALSE
),
224 /* GNU extension to record C++ vtable hierarchy. */
225 static reloc_howto_type elf64_s390_vtinherit_howto
=
226 HOWTO (R_390_GNU_VTINHERIT
, 0,4,0,FALSE
,0,complain_overflow_dont
, NULL
, "R_390_GNU_VTINHERIT", FALSE
,0, 0, FALSE
);
227 static reloc_howto_type elf64_s390_vtentry_howto
=
228 HOWTO (R_390_GNU_VTENTRY
, 0,4,0,FALSE
,0,complain_overflow_dont
, _bfd_elf_rel_vtable_reloc_fn
,"R_390_GNU_VTENTRY", FALSE
,0,0, FALSE
);
230 static reloc_howto_type
*
231 elf_s390_reloc_type_lookup (abfd
, code
)
232 bfd
*abfd ATTRIBUTE_UNUSED
;
233 bfd_reloc_code_real_type code
;
238 return &elf_howto_table
[(int) R_390_NONE
];
240 return &elf_howto_table
[(int) R_390_8
];
241 case BFD_RELOC_390_12
:
242 return &elf_howto_table
[(int) R_390_12
];
244 return &elf_howto_table
[(int) R_390_16
];
246 return &elf_howto_table
[(int) R_390_32
];
248 return &elf_howto_table
[(int) R_390_32
];
249 case BFD_RELOC_32_PCREL
:
250 return &elf_howto_table
[(int) R_390_PC32
];
251 case BFD_RELOC_390_GOT12
:
252 return &elf_howto_table
[(int) R_390_GOT12
];
253 case BFD_RELOC_32_GOT_PCREL
:
254 return &elf_howto_table
[(int) R_390_GOT32
];
255 case BFD_RELOC_390_PLT32
:
256 return &elf_howto_table
[(int) R_390_PLT32
];
257 case BFD_RELOC_390_COPY
:
258 return &elf_howto_table
[(int) R_390_COPY
];
259 case BFD_RELOC_390_GLOB_DAT
:
260 return &elf_howto_table
[(int) R_390_GLOB_DAT
];
261 case BFD_RELOC_390_JMP_SLOT
:
262 return &elf_howto_table
[(int) R_390_JMP_SLOT
];
263 case BFD_RELOC_390_RELATIVE
:
264 return &elf_howto_table
[(int) R_390_RELATIVE
];
265 case BFD_RELOC_32_GOTOFF
:
266 return &elf_howto_table
[(int) R_390_GOTOFF32
];
267 case BFD_RELOC_390_GOTPC
:
268 return &elf_howto_table
[(int) R_390_GOTPC
];
269 case BFD_RELOC_390_GOT16
:
270 return &elf_howto_table
[(int) R_390_GOT16
];
271 case BFD_RELOC_16_PCREL
:
272 return &elf_howto_table
[(int) R_390_PC16
];
273 case BFD_RELOC_390_PC16DBL
:
274 return &elf_howto_table
[(int) R_390_PC16DBL
];
275 case BFD_RELOC_390_PLT16DBL
:
276 return &elf_howto_table
[(int) R_390_PLT16DBL
];
277 case BFD_RELOC_390_PC32DBL
:
278 return &elf_howto_table
[(int) R_390_PC32DBL
];
279 case BFD_RELOC_390_PLT32DBL
:
280 return &elf_howto_table
[(int) R_390_PLT32DBL
];
281 case BFD_RELOC_390_GOTPCDBL
:
282 return &elf_howto_table
[(int) R_390_GOTPCDBL
];
284 return &elf_howto_table
[(int) R_390_64
];
285 case BFD_RELOC_64_PCREL
:
286 return &elf_howto_table
[(int) R_390_PC64
];
287 case BFD_RELOC_390_GOT64
:
288 return &elf_howto_table
[(int) R_390_GOT64
];
289 case BFD_RELOC_390_PLT64
:
290 return &elf_howto_table
[(int) R_390_PLT64
];
291 case BFD_RELOC_390_GOTENT
:
292 return &elf_howto_table
[(int) R_390_GOTENT
];
293 case BFD_RELOC_16_GOTOFF
:
294 return &elf_howto_table
[(int) R_390_GOTOFF16
];
295 case BFD_RELOC_390_GOTOFF64
:
296 return &elf_howto_table
[(int) R_390_GOTOFF64
];
297 case BFD_RELOC_390_GOTPLT12
:
298 return &elf_howto_table
[(int) R_390_GOTPLT12
];
299 case BFD_RELOC_390_GOTPLT16
:
300 return &elf_howto_table
[(int) R_390_GOTPLT16
];
301 case BFD_RELOC_390_GOTPLT32
:
302 return &elf_howto_table
[(int) R_390_GOTPLT32
];
303 case BFD_RELOC_390_GOTPLT64
:
304 return &elf_howto_table
[(int) R_390_GOTPLT64
];
305 case BFD_RELOC_390_GOTPLTENT
:
306 return &elf_howto_table
[(int) R_390_GOTPLTENT
];
307 case BFD_RELOC_390_PLTOFF16
:
308 return &elf_howto_table
[(int) R_390_PLTOFF16
];
309 case BFD_RELOC_390_PLTOFF32
:
310 return &elf_howto_table
[(int) R_390_PLTOFF32
];
311 case BFD_RELOC_390_PLTOFF64
:
312 return &elf_howto_table
[(int) R_390_PLTOFF64
];
313 case BFD_RELOC_390_TLS_LOAD
:
314 return &elf_howto_table
[(int) R_390_TLS_LOAD
];
315 case BFD_RELOC_390_TLS_GDCALL
:
316 return &elf_howto_table
[(int) R_390_TLS_GDCALL
];
317 case BFD_RELOC_390_TLS_LDCALL
:
318 return &elf_howto_table
[(int) R_390_TLS_LDCALL
];
319 case BFD_RELOC_390_TLS_GD64
:
320 return &elf_howto_table
[(int) R_390_TLS_GD64
];
321 case BFD_RELOC_390_TLS_GOTIE12
:
322 return &elf_howto_table
[(int) R_390_TLS_GOTIE12
];
323 case BFD_RELOC_390_TLS_GOTIE64
:
324 return &elf_howto_table
[(int) R_390_TLS_GOTIE64
];
325 case BFD_RELOC_390_TLS_LDM64
:
326 return &elf_howto_table
[(int) R_390_TLS_LDM64
];
327 case BFD_RELOC_390_TLS_IE64
:
328 return &elf_howto_table
[(int) R_390_TLS_IE64
];
329 case BFD_RELOC_390_TLS_IEENT
:
330 return &elf_howto_table
[(int) R_390_TLS_IEENT
];
331 case BFD_RELOC_390_TLS_LE64
:
332 return &elf_howto_table
[(int) R_390_TLS_LE64
];
333 case BFD_RELOC_390_TLS_LDO64
:
334 return &elf_howto_table
[(int) R_390_TLS_LDO64
];
335 case BFD_RELOC_390_TLS_DTPMOD
:
336 return &elf_howto_table
[(int) R_390_TLS_DTPMOD
];
337 case BFD_RELOC_390_TLS_DTPOFF
:
338 return &elf_howto_table
[(int) R_390_TLS_DTPOFF
];
339 case BFD_RELOC_390_TLS_TPOFF
:
340 return &elf_howto_table
[(int) R_390_TLS_TPOFF
];
341 case BFD_RELOC_390_20
:
342 return &elf_howto_table
[(int) R_390_20
];
343 case BFD_RELOC_390_GOT20
:
344 return &elf_howto_table
[(int) R_390_GOT20
];
345 case BFD_RELOC_390_GOTPLT20
:
346 return &elf_howto_table
[(int) R_390_GOTPLT20
];
347 case BFD_RELOC_390_TLS_GOTIE20
:
348 return &elf_howto_table
[(int) R_390_TLS_GOTIE20
];
349 case BFD_RELOC_VTABLE_INHERIT
:
350 return &elf64_s390_vtinherit_howto
;
351 case BFD_RELOC_VTABLE_ENTRY
:
352 return &elf64_s390_vtentry_howto
;
359 static reloc_howto_type
*
360 elf_s390_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
366 i
< sizeof (elf_howto_table
) / sizeof (elf_howto_table
[0]);
368 if (elf_howto_table
[i
].name
!= NULL
369 && strcasecmp (elf_howto_table
[i
].name
, r_name
) == 0)
370 return &elf_howto_table
[i
];
372 if (strcasecmp (elf64_s390_vtinherit_howto
.name
, r_name
) == 0)
373 return &elf64_s390_vtinherit_howto
;
374 if (strcasecmp (elf64_s390_vtentry_howto
.name
, r_name
) == 0)
375 return &elf64_s390_vtentry_howto
;
380 /* We need to use ELF64_R_TYPE so we have our own copy of this function,
381 and elf64-s390.c has its own copy. */
384 elf_s390_info_to_howto (abfd
, cache_ptr
, dst
)
385 bfd
*abfd ATTRIBUTE_UNUSED
;
387 Elf_Internal_Rela
*dst
;
389 unsigned int r_type
= ELF64_R_TYPE(dst
->r_info
);
392 case R_390_GNU_VTINHERIT
:
393 cache_ptr
->howto
= &elf64_s390_vtinherit_howto
;
396 case R_390_GNU_VTENTRY
:
397 cache_ptr
->howto
= &elf64_s390_vtentry_howto
;
401 if (r_type
>= sizeof (elf_howto_table
) / sizeof (elf_howto_table
[0]))
403 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
407 cache_ptr
->howto
= &elf_howto_table
[r_type
];
411 /* A relocation function which doesn't do anything. */
412 static bfd_reloc_status_type
413 s390_tls_reloc (abfd
, reloc_entry
, symbol
, data
, input_section
,
414 output_bfd
, error_message
)
415 bfd
*abfd ATTRIBUTE_UNUSED
;
416 arelent
*reloc_entry
;
417 asymbol
*symbol ATTRIBUTE_UNUSED
;
418 PTR data ATTRIBUTE_UNUSED
;
419 asection
*input_section
;
421 char **error_message ATTRIBUTE_UNUSED
;
424 reloc_entry
->address
+= input_section
->output_offset
;
428 /* Handle the large displacement relocs. */
429 static bfd_reloc_status_type
430 s390_elf_ldisp_reloc (abfd
, reloc_entry
, symbol
, data
, input_section
,
431 output_bfd
, error_message
)
433 arelent
*reloc_entry
;
436 asection
*input_section
;
438 char **error_message ATTRIBUTE_UNUSED
;
440 reloc_howto_type
*howto
= reloc_entry
->howto
;
444 if (output_bfd
!= (bfd
*) NULL
445 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
446 && (! howto
->partial_inplace
447 || reloc_entry
->addend
== 0))
449 reloc_entry
->address
+= input_section
->output_offset
;
452 if (output_bfd
!= NULL
)
453 return bfd_reloc_continue
;
455 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
456 return bfd_reloc_outofrange
;
458 relocation
= (symbol
->value
459 + symbol
->section
->output_section
->vma
460 + symbol
->section
->output_offset
);
461 relocation
+= reloc_entry
->addend
;
462 if (howto
->pc_relative
)
464 relocation
-= (input_section
->output_section
->vma
465 + input_section
->output_offset
);
466 relocation
-= reloc_entry
->address
;
469 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ reloc_entry
->address
);
470 insn
|= (relocation
& 0xfff) << 16 | (relocation
& 0xff000) >> 4;
471 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ reloc_entry
->address
);
473 if ((bfd_signed_vma
) relocation
< - 0x80000
474 || (bfd_signed_vma
) relocation
> 0x7ffff)
475 return bfd_reloc_overflow
;
481 elf_s390_is_local_label_name (abfd
, name
)
485 if (name
[0] == '.' && (name
[1] == 'X' || name
[1] == 'L'))
488 return _bfd_elf_is_local_label_name (abfd
, name
);
491 /* Functions for the 390 ELF linker. */
493 /* The name of the dynamic interpreter. This is put in the .interp
496 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
498 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
499 copying dynamic variables from a shared lib into an app's dynbss
500 section, and instead use a dynamic relocation to point into the
502 #define ELIMINATE_COPY_RELOCS 1
504 /* The size in bytes of the first entry in the procedure linkage table. */
505 #define PLT_FIRST_ENTRY_SIZE 32
506 /* The size in bytes of an entry in the procedure linkage table. */
507 #define PLT_ENTRY_SIZE 32
509 #define GOT_ENTRY_SIZE 8
511 /* The first three entries in a procedure linkage table are reserved,
512 and the initial contents are unimportant (we zero them out).
513 Subsequent entries look like this. See the SVR4 ABI 386
514 supplement to see how this works. */
516 /* For the s390, simple addr offset can only be 0 - 4096.
517 To use the full 16777216 TB address space, several instructions
518 are needed to load an address in a register and execute
519 a branch( or just saving the address)
521 Furthermore, only r 0 and 1 are free to use!!! */
523 /* The first 3 words in the GOT are then reserved.
524 Word 0 is the address of the dynamic table.
525 Word 1 is a pointer to a structure describing the object
526 Word 2 is used to point to the loader entry address.
528 The code for PLT entries looks like this:
530 The GOT holds the address in the PLT to be executed.
531 The loader then gets:
532 24(15) = Pointer to the structure describing the object.
533 28(15) = Offset in symbol table
534 The loader must then find the module where the function is
535 and insert the address in the GOT.
537 PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
538 LG 1,0(1) # 6 bytes Load address from GOT in r1
539 BCR 15,1 # 2 bytes Jump to address
540 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
541 LGF 1,12(1) # 6 bytes Load offset in symbl table in r1
542 BRCL 15,-x # 6 bytes Jump to start of PLT
543 .long ? # 4 bytes offset into symbol table
545 Total = 32 bytes per PLT entry
546 Fixup at offset 2: relative address to GOT entry
547 Fixup at offset 22: relative branch to PLT0
548 Fixup at offset 28: 32 bit offset into symbol table
550 A 32 bit offset into the symbol table is enough. It allows for symbol
551 tables up to a size of 2 gigabyte. A single dynamic object (the main
552 program, any shared library) is limited to 4GB in size and I want to see
553 the program that manages to have a symbol table of more than 2 GB with a
554 total size of at max 4 GB. */
556 #define PLT_ENTRY_WORD0 (bfd_vma) 0xc0100000
557 #define PLT_ENTRY_WORD1 (bfd_vma) 0x0000e310
558 #define PLT_ENTRY_WORD2 (bfd_vma) 0x10000004
559 #define PLT_ENTRY_WORD3 (bfd_vma) 0x07f10d10
560 #define PLT_ENTRY_WORD4 (bfd_vma) 0xe310100c
561 #define PLT_ENTRY_WORD5 (bfd_vma) 0x0014c0f4
562 #define PLT_ENTRY_WORD6 (bfd_vma) 0x00000000
563 #define PLT_ENTRY_WORD7 (bfd_vma) 0x00000000
565 /* The first PLT entry pushes the offset into the symbol table
566 from R1 onto the stack at 8(15) and the loader object info
567 at 12(15), loads the loader address in R1 and jumps to it. */
569 /* The first entry in the PLT:
572 STG 1,56(15) # r1 contains the offset into the symbol table
573 LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
574 MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
575 LG 1,16(1) # get entry address of loader
576 BCR 15,1 # jump to loader
578 Fixup at offset 8: relative address to start of GOT. */
580 #define PLT_FIRST_ENTRY_WORD0 (bfd_vma) 0xe310f038
581 #define PLT_FIRST_ENTRY_WORD1 (bfd_vma) 0x0024c010
582 #define PLT_FIRST_ENTRY_WORD2 (bfd_vma) 0x00000000
583 #define PLT_FIRST_ENTRY_WORD3 (bfd_vma) 0xd207f030
584 #define PLT_FIRST_ENTRY_WORD4 (bfd_vma) 0x1008e310
585 #define PLT_FIRST_ENTRY_WORD5 (bfd_vma) 0x10100004
586 #define PLT_FIRST_ENTRY_WORD6 (bfd_vma) 0x07f10700
587 #define PLT_FIRST_ENTRY_WORD7 (bfd_vma) 0x07000700
589 /* The s390 linker needs to keep track of the number of relocs that it
590 decides to copy as dynamic relocs in check_relocs for each symbol.
591 This is so that it can later discard them if they are found to be
592 unnecessary. We store the information in a field extending the
593 regular ELF linker hash table. */
595 struct elf_s390_dyn_relocs
597 struct elf_s390_dyn_relocs
*next
;
599 /* The input section of the reloc. */
602 /* Total number of relocs copied for the input section. */
605 /* Number of pc-relative relocs copied for the input section. */
606 bfd_size_type pc_count
;
609 /* s390 ELF linker hash entry. */
611 struct elf_s390_link_hash_entry
613 struct elf_link_hash_entry elf
;
615 /* Track dynamic relocs copied for this symbol. */
616 struct elf_s390_dyn_relocs
*dyn_relocs
;
618 /* Number of GOTPLT references for a function. */
619 bfd_signed_vma gotplt_refcount
;
621 #define GOT_UNKNOWN 0
625 #define GOT_TLS_IE_NLT 3
626 unsigned char tls_type
;
629 #define elf_s390_hash_entry(ent) \
630 ((struct elf_s390_link_hash_entry *)(ent))
632 /* NOTE: Keep this structure in sync with
633 the one declared in elf32-s390.c. */
634 struct elf_s390_obj_tdata
636 struct elf_obj_tdata root
;
638 /* TLS type for each local got entry. */
639 char *local_got_tls_type
;
642 #define elf_s390_tdata(abfd) \
643 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
645 #define elf_s390_local_got_tls_type(abfd) \
646 (elf_s390_tdata (abfd)->local_got_tls_type)
648 #define is_s390_elf(bfd) \
649 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
650 && elf_tdata (bfd) != NULL \
651 && elf_object_id (bfd) == S390_ELF_TDATA)
654 elf_s390_mkobject (bfd
*abfd
)
656 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_s390_obj_tdata
),
661 elf_s390_object_p (abfd
)
664 /* Set the right machine number for an s390 elf32 file. */
665 return bfd_default_set_arch_mach (abfd
, bfd_arch_s390
, bfd_mach_s390_64
);
668 /* s390 ELF linker hash table. */
670 struct elf_s390_link_hash_table
672 struct elf_link_hash_table elf
;
674 /* Short-cuts to get to dynamic linker sections. */
684 bfd_signed_vma refcount
;
688 /* Small local sym to section mapping cache. */
689 struct sym_sec_cache sym_sec
;
692 /* Get the s390 ELF linker hash table from a link_info structure. */
694 #define elf_s390_hash_table(p) \
695 ((struct elf_s390_link_hash_table *) ((p)->hash))
697 /* Create an entry in an s390 ELF linker hash table. */
699 static struct bfd_hash_entry
*
700 link_hash_newfunc (entry
, table
, string
)
701 struct bfd_hash_entry
*entry
;
702 struct bfd_hash_table
*table
;
705 /* Allocate the structure if it has not already been allocated by a
709 entry
= bfd_hash_allocate (table
,
710 sizeof (struct elf_s390_link_hash_entry
));
715 /* Call the allocation method of the superclass. */
716 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
719 struct elf_s390_link_hash_entry
*eh
;
721 eh
= (struct elf_s390_link_hash_entry
*) entry
;
722 eh
->dyn_relocs
= NULL
;
723 eh
->gotplt_refcount
= 0;
724 eh
->tls_type
= GOT_UNKNOWN
;
730 /* Create an s390 ELF linker hash table. */
732 static struct bfd_link_hash_table
*
733 elf_s390_link_hash_table_create (abfd
)
736 struct elf_s390_link_hash_table
*ret
;
737 bfd_size_type amt
= sizeof (struct elf_s390_link_hash_table
);
739 ret
= (struct elf_s390_link_hash_table
*) bfd_malloc (amt
);
743 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
, link_hash_newfunc
,
744 sizeof (struct elf_s390_link_hash_entry
)))
757 ret
->tls_ldm_got
.refcount
= 0;
758 ret
->sym_sec
.abfd
= NULL
;
760 return &ret
->elf
.root
;
763 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
764 shortcuts to them in our hash table. */
767 create_got_section (dynobj
, info
)
769 struct bfd_link_info
*info
;
771 struct elf_s390_link_hash_table
*htab
;
773 if (! _bfd_elf_create_got_section (dynobj
, info
))
776 htab
= elf_s390_hash_table (info
);
777 htab
->sgot
= bfd_get_section_by_name (dynobj
, ".got");
778 htab
->sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
779 if (!htab
->sgot
|| !htab
->sgotplt
)
782 htab
->srelgot
= bfd_make_section_with_flags (dynobj
, ".rela.got",
783 (SEC_ALLOC
| SEC_LOAD
788 if (htab
->srelgot
== NULL
789 || ! bfd_set_section_alignment (dynobj
, htab
->srelgot
, 3))
794 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
795 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
799 elf_s390_create_dynamic_sections (dynobj
, info
)
801 struct bfd_link_info
*info
;
803 struct elf_s390_link_hash_table
*htab
;
805 htab
= elf_s390_hash_table (info
);
806 if (!htab
->sgot
&& !create_got_section (dynobj
, info
))
809 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
812 htab
->splt
= bfd_get_section_by_name (dynobj
, ".plt");
813 htab
->srelplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
814 htab
->sdynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
816 htab
->srelbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
818 if (!htab
->splt
|| !htab
->srelplt
|| !htab
->sdynbss
819 || (!info
->shared
&& !htab
->srelbss
))
825 /* Copy the extra info we tack onto an elf_link_hash_entry. */
828 elf_s390_copy_indirect_symbol (info
, dir
, ind
)
829 struct bfd_link_info
*info
;
830 struct elf_link_hash_entry
*dir
, *ind
;
832 struct elf_s390_link_hash_entry
*edir
, *eind
;
834 edir
= (struct elf_s390_link_hash_entry
*) dir
;
835 eind
= (struct elf_s390_link_hash_entry
*) ind
;
837 if (eind
->dyn_relocs
!= NULL
)
839 if (edir
->dyn_relocs
!= NULL
)
841 struct elf_s390_dyn_relocs
**pp
;
842 struct elf_s390_dyn_relocs
*p
;
844 /* Add reloc counts against the indirect sym to the direct sym
845 list. Merge any entries against the same section. */
846 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
848 struct elf_s390_dyn_relocs
*q
;
850 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
851 if (q
->sec
== p
->sec
)
853 q
->pc_count
+= p
->pc_count
;
854 q
->count
+= p
->count
;
861 *pp
= edir
->dyn_relocs
;
864 edir
->dyn_relocs
= eind
->dyn_relocs
;
865 eind
->dyn_relocs
= NULL
;
868 if (ind
->root
.type
== bfd_link_hash_indirect
869 && dir
->got
.refcount
<= 0)
871 edir
->tls_type
= eind
->tls_type
;
872 eind
->tls_type
= GOT_UNKNOWN
;
875 if (ELIMINATE_COPY_RELOCS
876 && ind
->root
.type
!= bfd_link_hash_indirect
877 && dir
->dynamic_adjusted
)
879 /* If called to transfer flags for a weakdef during processing
880 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
881 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
882 dir
->ref_dynamic
|= ind
->ref_dynamic
;
883 dir
->ref_regular
|= ind
->ref_regular
;
884 dir
->ref_regular_nonweak
|= ind
->ref_regular_nonweak
;
885 dir
->needs_plt
|= ind
->needs_plt
;
888 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
892 elf_s390_tls_transition (info
, r_type
, is_local
)
893 struct bfd_link_info
*info
;
905 return R_390_TLS_LE64
;
906 return R_390_TLS_IE64
;
907 case R_390_TLS_GOTIE64
:
909 return R_390_TLS_LE64
;
910 return R_390_TLS_GOTIE64
;
911 case R_390_TLS_LDM64
:
912 return R_390_TLS_LE64
;
918 /* Look through the relocs for a section during the first phase, and
919 allocate space in the global offset table or procedure linkage
923 elf_s390_check_relocs (abfd
, info
, sec
, relocs
)
925 struct bfd_link_info
*info
;
927 const Elf_Internal_Rela
*relocs
;
929 struct elf_s390_link_hash_table
*htab
;
930 Elf_Internal_Shdr
*symtab_hdr
;
931 struct elf_link_hash_entry
**sym_hashes
;
932 const Elf_Internal_Rela
*rel
;
933 const Elf_Internal_Rela
*rel_end
;
935 bfd_signed_vma
*local_got_refcounts
;
936 int tls_type
, old_tls_type
;
938 if (info
->relocatable
)
941 BFD_ASSERT (is_s390_elf (abfd
));
943 htab
= elf_s390_hash_table (info
);
944 symtab_hdr
= &elf_symtab_hdr (abfd
);
945 sym_hashes
= elf_sym_hashes (abfd
);
946 local_got_refcounts
= elf_local_got_refcounts (abfd
);
950 rel_end
= relocs
+ sec
->reloc_count
;
951 for (rel
= relocs
; rel
< rel_end
; rel
++)
954 unsigned long r_symndx
;
955 struct elf_link_hash_entry
*h
;
957 r_symndx
= ELF64_R_SYM (rel
->r_info
);
959 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
961 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"),
967 if (r_symndx
< symtab_hdr
->sh_info
)
971 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
972 while (h
->root
.type
== bfd_link_hash_indirect
973 || h
->root
.type
== bfd_link_hash_warning
)
974 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
977 /* Create got section and local_got_refcounts array if they
979 r_type
= elf_s390_tls_transition (info
,
980 ELF64_R_TYPE (rel
->r_info
),
995 case R_390_GOTPLTENT
:
997 case R_390_TLS_GOTIE12
:
998 case R_390_TLS_GOTIE20
:
999 case R_390_TLS_GOTIE64
:
1000 case R_390_TLS_IEENT
:
1001 case R_390_TLS_IE64
:
1002 case R_390_TLS_LDM64
:
1004 && local_got_refcounts
== NULL
)
1008 size
= symtab_hdr
->sh_info
;
1009 size
*= (sizeof (bfd_signed_vma
) + sizeof(char));
1010 local_got_refcounts
= ((bfd_signed_vma
*)
1011 bfd_zalloc (abfd
, size
));
1012 if (local_got_refcounts
== NULL
)
1014 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1015 elf_s390_local_got_tls_type (abfd
)
1016 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
1019 case R_390_GOTOFF16
:
1020 case R_390_GOTOFF32
:
1021 case R_390_GOTOFF64
:
1023 case R_390_GOTPCDBL
:
1024 if (htab
->sgot
== NULL
)
1026 if (htab
->elf
.dynobj
== NULL
)
1027 htab
->elf
.dynobj
= abfd
;
1028 if (!create_got_section (htab
->elf
.dynobj
, info
))
1035 case R_390_GOTOFF16
:
1036 case R_390_GOTOFF32
:
1037 case R_390_GOTOFF64
:
1039 case R_390_GOTPCDBL
:
1040 /* Got is created, nothing to be done. */
1043 case R_390_PLT16DBL
:
1045 case R_390_PLT32DBL
:
1047 case R_390_PLTOFF16
:
1048 case R_390_PLTOFF32
:
1049 case R_390_PLTOFF64
:
1050 /* This symbol requires a procedure linkage table entry. We
1051 actually build the entry in adjust_dynamic_symbol,
1052 because this might be a case of linking PIC code which is
1053 never referenced by a dynamic object, in which case we
1054 don't need to generate a procedure linkage table entry
1057 /* If this is a local symbol, we resolve it directly without
1058 creating a procedure linkage table entry. */
1062 h
->plt
.refcount
+= 1;
1066 case R_390_GOTPLT12
:
1067 case R_390_GOTPLT16
:
1068 case R_390_GOTPLT20
:
1069 case R_390_GOTPLT32
:
1070 case R_390_GOTPLT64
:
1071 case R_390_GOTPLTENT
:
1072 /* This symbol requires either a procedure linkage table entry
1073 or an entry in the local got. We actually build the entry
1074 in adjust_dynamic_symbol because whether this is really a
1075 global reference can change and with it the fact if we have
1076 to create a plt entry or a local got entry. To be able to
1077 make a once global symbol a local one we have to keep track
1078 of the number of gotplt references that exist for this
1082 ((struct elf_s390_link_hash_entry
*) h
)->gotplt_refcount
++;
1084 h
->plt
.refcount
+= 1;
1087 local_got_refcounts
[r_symndx
] += 1;
1090 case R_390_TLS_LDM64
:
1091 htab
->tls_ldm_got
.refcount
+= 1;
1094 case R_390_TLS_IE64
:
1095 case R_390_TLS_GOTIE12
:
1096 case R_390_TLS_GOTIE20
:
1097 case R_390_TLS_GOTIE64
:
1098 case R_390_TLS_IEENT
:
1100 info
->flags
|= DF_STATIC_TLS
;
1109 case R_390_TLS_GD64
:
1110 /* This symbol requires a global offset table entry. */
1119 tls_type
= GOT_NORMAL
;
1121 case R_390_TLS_GD64
:
1122 tls_type
= GOT_TLS_GD
;
1124 case R_390_TLS_IE64
:
1125 case R_390_TLS_GOTIE64
:
1126 tls_type
= GOT_TLS_IE
;
1128 case R_390_TLS_GOTIE12
:
1129 case R_390_TLS_GOTIE20
:
1130 case R_390_TLS_IEENT
:
1131 tls_type
= GOT_TLS_IE_NLT
;
1137 h
->got
.refcount
+= 1;
1138 old_tls_type
= elf_s390_hash_entry(h
)->tls_type
;
1142 local_got_refcounts
[r_symndx
] += 1;
1143 old_tls_type
= elf_s390_local_got_tls_type (abfd
) [r_symndx
];
1145 /* If a TLS symbol is accessed using IE at least once,
1146 there is no point to use dynamic model for it. */
1147 if (old_tls_type
!= tls_type
&& old_tls_type
!= GOT_UNKNOWN
)
1149 if (old_tls_type
== GOT_NORMAL
|| tls_type
== GOT_NORMAL
)
1151 (*_bfd_error_handler
)
1152 (_("%B: `%s' accessed both as normal and thread local symbol"),
1153 abfd
, h
->root
.root
.string
);
1156 if (old_tls_type
> tls_type
)
1157 tls_type
= old_tls_type
;
1160 if (old_tls_type
!= tls_type
)
1163 elf_s390_hash_entry (h
)->tls_type
= tls_type
;
1165 elf_s390_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
1168 if (r_type
!= R_390_TLS_IE64
)
1172 case R_390_TLS_LE64
:
1175 info
->flags
|= DF_STATIC_TLS
;
1187 if (h
!= NULL
&& !info
->shared
)
1189 /* If this reloc is in a read-only section, we might
1190 need a copy reloc. We can't check reliably at this
1191 stage whether the section is read-only, as input
1192 sections have not yet been mapped to output sections.
1193 Tentatively set the flag for now, and correct in
1194 adjust_dynamic_symbol. */
1197 /* We may need a .plt entry if the function this reloc
1198 refers to is in a shared lib. */
1199 h
->plt
.refcount
+= 1;
1202 /* If we are creating a shared library, and this is a reloc
1203 against a global symbol, or a non PC relative reloc
1204 against a local symbol, then we need to copy the reloc
1205 into the shared library. However, if we are linking with
1206 -Bsymbolic, we do not need to copy a reloc against a
1207 global symbol which is defined in an object we are
1208 including in the link (i.e., DEF_REGULAR is set). At
1209 this point we have not seen all the input files, so it is
1210 possible that DEF_REGULAR is not set now but will be set
1211 later (it is never cleared). In case of a weak definition,
1212 DEF_REGULAR may be cleared later by a strong definition in
1213 a shared library. We account for that possibility below by
1214 storing information in the relocs_copied field of the hash
1215 table entry. A similar situation occurs when creating
1216 shared libraries and symbol visibility changes render the
1219 If on the other hand, we are creating an executable, we
1220 may need to keep relocations for symbols satisfied by a
1221 dynamic library if we manage to avoid copy relocs for the
1224 && (sec
->flags
& SEC_ALLOC
) != 0
1225 && ((ELF64_R_TYPE (rel
->r_info
) != R_390_PC16
1226 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC16DBL
1227 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC32
1228 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC32DBL
1229 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC64
)
1231 && (! info
->symbolic
1232 || h
->root
.type
== bfd_link_hash_defweak
1233 || !h
->def_regular
))))
1234 || (ELIMINATE_COPY_RELOCS
1236 && (sec
->flags
& SEC_ALLOC
) != 0
1238 && (h
->root
.type
== bfd_link_hash_defweak
1239 || !h
->def_regular
)))
1241 struct elf_s390_dyn_relocs
*p
;
1242 struct elf_s390_dyn_relocs
**head
;
1244 /* We must copy these reloc types into the output file.
1245 Create a reloc section in dynobj and make room for
1249 sreloc
= _bfd_elf_make_dynamic_reloc_section
1250 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
1256 /* If this is a global symbol, we count the number of
1257 relocations we need for this symbol. */
1260 head
= &((struct elf_s390_link_hash_entry
*) h
)->dyn_relocs
;
1264 /* Track dynamic relocs needed for local syms too.
1265 We really need local syms available to do this
1271 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
1276 vpp
= &elf_section_data (s
)->local_dynrel
;
1277 head
= (struct elf_s390_dyn_relocs
**) vpp
;
1281 if (p
== NULL
|| p
->sec
!= sec
)
1283 bfd_size_type amt
= sizeof *p
;
1284 p
= ((struct elf_s390_dyn_relocs
*)
1285 bfd_alloc (htab
->elf
.dynobj
, amt
));
1296 if (ELF64_R_TYPE (rel
->r_info
) == R_390_PC16
1297 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC16DBL
1298 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC32
1299 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC32DBL
1300 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC64
)
1305 /* This relocation describes the C++ object vtable hierarchy.
1306 Reconstruct it for later use during GC. */
1307 case R_390_GNU_VTINHERIT
:
1308 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1312 /* This relocation describes which C++ vtable entries are actually
1313 used. Record for later use during GC. */
1314 case R_390_GNU_VTENTRY
:
1315 BFD_ASSERT (h
!= NULL
);
1317 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1329 /* Return the section that should be marked against GC for a given
1333 elf_s390_gc_mark_hook (asection
*sec
,
1334 struct bfd_link_info
*info
,
1335 Elf_Internal_Rela
*rel
,
1336 struct elf_link_hash_entry
*h
,
1337 Elf_Internal_Sym
*sym
)
1340 switch (ELF64_R_TYPE (rel
->r_info
))
1342 case R_390_GNU_VTINHERIT
:
1343 case R_390_GNU_VTENTRY
:
1347 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1350 /* Update the got entry reference counts for the section being removed. */
1353 elf_s390_gc_sweep_hook (bfd
*abfd
,
1354 struct bfd_link_info
*info
,
1356 const Elf_Internal_Rela
*relocs
)
1358 Elf_Internal_Shdr
*symtab_hdr
;
1359 struct elf_link_hash_entry
**sym_hashes
;
1360 bfd_signed_vma
*local_got_refcounts
;
1361 const Elf_Internal_Rela
*rel
, *relend
;
1363 if (info
->relocatable
)
1366 elf_section_data (sec
)->local_dynrel
= NULL
;
1368 symtab_hdr
= &elf_symtab_hdr (abfd
);
1369 sym_hashes
= elf_sym_hashes (abfd
);
1370 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1372 relend
= relocs
+ sec
->reloc_count
;
1373 for (rel
= relocs
; rel
< relend
; rel
++)
1375 unsigned long r_symndx
;
1376 unsigned int r_type
;
1377 struct elf_link_hash_entry
*h
= NULL
;
1379 r_symndx
= ELF64_R_SYM (rel
->r_info
);
1380 if (r_symndx
>= symtab_hdr
->sh_info
)
1382 struct elf_s390_link_hash_entry
*eh
;
1383 struct elf_s390_dyn_relocs
**pp
;
1384 struct elf_s390_dyn_relocs
*p
;
1386 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1387 while (h
->root
.type
== bfd_link_hash_indirect
1388 || h
->root
.type
== bfd_link_hash_warning
)
1389 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1390 eh
= (struct elf_s390_link_hash_entry
*) h
;
1392 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
1395 /* Everything must go for SEC. */
1401 r_type
= ELF64_R_TYPE (rel
->r_info
);
1402 r_type
= elf_s390_tls_transition (info
, r_type
, h
!= NULL
);
1405 case R_390_TLS_LDM64
:
1406 if (elf_s390_hash_table (info
)->tls_ldm_got
.refcount
> 0)
1407 elf_s390_hash_table (info
)->tls_ldm_got
.refcount
-= 1;
1410 case R_390_TLS_GD64
:
1411 case R_390_TLS_IE64
:
1412 case R_390_TLS_GOTIE12
:
1413 case R_390_TLS_GOTIE20
:
1414 case R_390_TLS_GOTIE64
:
1415 case R_390_TLS_IEENT
:
1421 case R_390_GOTOFF16
:
1422 case R_390_GOTOFF32
:
1423 case R_390_GOTOFF64
:
1425 case R_390_GOTPCDBL
:
1429 if (h
->got
.refcount
> 0)
1430 h
->got
.refcount
-= 1;
1432 else if (local_got_refcounts
!= NULL
)
1434 if (local_got_refcounts
[r_symndx
] > 0)
1435 local_got_refcounts
[r_symndx
] -= 1;
1454 case R_390_PLT16DBL
:
1456 case R_390_PLT32DBL
:
1458 case R_390_PLTOFF16
:
1459 case R_390_PLTOFF32
:
1460 case R_390_PLTOFF64
:
1463 if (h
->plt
.refcount
> 0)
1464 h
->plt
.refcount
-= 1;
1468 case R_390_GOTPLT12
:
1469 case R_390_GOTPLT16
:
1470 case R_390_GOTPLT20
:
1471 case R_390_GOTPLT32
:
1472 case R_390_GOTPLT64
:
1473 case R_390_GOTPLTENT
:
1476 if (h
->plt
.refcount
> 0)
1478 ((struct elf_s390_link_hash_entry
*) h
)->gotplt_refcount
--;
1479 h
->plt
.refcount
-= 1;
1482 else if (local_got_refcounts
!= NULL
)
1484 if (local_got_refcounts
[r_symndx
] > 0)
1485 local_got_refcounts
[r_symndx
] -= 1;
1497 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1498 entry but we found we will not create any. Called when we find we will
1499 not have any PLT for this symbol, by for example
1500 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1501 or elf_s390_size_dynamic_sections if no dynamic sections will be
1502 created (we're only linking static objects). */
1505 elf_s390_adjust_gotplt (h
)
1506 struct elf_s390_link_hash_entry
*h
;
1508 if (h
->elf
.root
.type
== bfd_link_hash_warning
)
1509 h
= (struct elf_s390_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
1511 if (h
->gotplt_refcount
<= 0)
1514 /* We simply add the number of gotplt references to the number
1515 * of got references for this symbol. */
1516 h
->elf
.got
.refcount
+= h
->gotplt_refcount
;
1517 h
->gotplt_refcount
= -1;
1520 /* Adjust a symbol defined by a dynamic object and referenced by a
1521 regular object. The current definition is in some section of the
1522 dynamic object, but we're not including those sections. We have to
1523 change the definition to something the rest of the link can
1527 elf_s390_adjust_dynamic_symbol (info
, h
)
1528 struct bfd_link_info
*info
;
1529 struct elf_link_hash_entry
*h
;
1531 struct elf_s390_link_hash_table
*htab
;
1534 /* If this is a function, put it in the procedure linkage table. We
1535 will fill in the contents of the procedure linkage table later
1536 (although we could actually do it here). */
1537 if (h
->type
== STT_FUNC
1540 if (h
->plt
.refcount
<= 0
1544 && h
->root
.type
!= bfd_link_hash_undefweak
1545 && h
->root
.type
!= bfd_link_hash_undefined
))
1547 /* This case can occur if we saw a PLT32 reloc in an input
1548 file, but the symbol was never referred to by a dynamic
1549 object, or if all references were garbage collected. In
1550 such a case, we don't actually need to build a procedure
1551 linkage table, and we can just do a PC32 reloc instead. */
1552 h
->plt
.offset
= (bfd_vma
) -1;
1554 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1560 /* It's possible that we incorrectly decided a .plt reloc was
1561 needed for an R_390_PC32 reloc to a non-function sym in
1562 check_relocs. We can't decide accurately between function and
1563 non-function syms in check-relocs; Objects loaded later in
1564 the link may change h->type. So fix it now. */
1565 h
->plt
.offset
= (bfd_vma
) -1;
1567 /* If this is a weak symbol, and there is a real definition, the
1568 processor independent code will have arranged for us to see the
1569 real definition first, and we can just use the same value. */
1570 if (h
->u
.weakdef
!= NULL
)
1572 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
1573 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
1574 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
1575 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
1576 if (ELIMINATE_COPY_RELOCS
|| info
->nocopyreloc
)
1577 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
1581 /* This is a reference to a symbol defined by a dynamic object which
1582 is not a function. */
1584 /* If we are creating a shared library, we must presume that the
1585 only references to the symbol are via the global offset table.
1586 For such cases we need not do anything here; the relocations will
1587 be handled correctly by relocate_section. */
1591 /* If there are no references to this symbol that do not use the
1592 GOT, we don't need to generate a copy reloc. */
1593 if (!h
->non_got_ref
)
1596 /* If -z nocopyreloc was given, we won't generate them either. */
1597 if (info
->nocopyreloc
)
1603 if (ELIMINATE_COPY_RELOCS
)
1605 struct elf_s390_link_hash_entry
* eh
;
1606 struct elf_s390_dyn_relocs
*p
;
1608 eh
= (struct elf_s390_link_hash_entry
*) h
;
1609 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1611 s
= p
->sec
->output_section
;
1612 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1616 /* If we didn't find any dynamic relocs in read-only sections, then
1617 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1627 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
1628 h
->root
.root
.string
);
1632 /* We must allocate the symbol in our .dynbss section, which will
1633 become part of the .bss section of the executable. There will be
1634 an entry for this symbol in the .dynsym section. The dynamic
1635 object will contain position independent code, so all references
1636 from the dynamic object to this symbol will go through the global
1637 offset table. The dynamic linker will use the .dynsym entry to
1638 determine the address it must put in the global offset table, so
1639 both the dynamic object and the regular object will refer to the
1640 same memory location for the variable. */
1642 htab
= elf_s390_hash_table (info
);
1644 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1645 copy the initial value out of the dynamic object and into the
1646 runtime process image. */
1647 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
1649 htab
->srelbss
->size
+= sizeof (Elf64_External_Rela
);
1655 return _bfd_elf_adjust_dynamic_copy (h
, s
);
1658 /* Allocate space in .plt, .got and associated reloc sections for
1662 allocate_dynrelocs (h
, inf
)
1663 struct elf_link_hash_entry
*h
;
1666 struct bfd_link_info
*info
;
1667 struct elf_s390_link_hash_table
*htab
;
1668 struct elf_s390_link_hash_entry
*eh
;
1669 struct elf_s390_dyn_relocs
*p
;
1671 if (h
->root
.type
== bfd_link_hash_indirect
)
1674 if (h
->root
.type
== bfd_link_hash_warning
)
1675 /* When warning symbols are created, they **replace** the "real"
1676 entry in the hash table, thus we never get to see the real
1677 symbol in a hash traversal. So look at it now. */
1678 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1680 info
= (struct bfd_link_info
*) inf
;
1681 htab
= elf_s390_hash_table (info
);
1683 if (htab
->elf
.dynamic_sections_created
1684 && h
->plt
.refcount
> 0
1685 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
1686 || h
->root
.type
!= bfd_link_hash_undefweak
))
1688 /* Make sure this symbol is output as a dynamic symbol.
1689 Undefined weak syms won't yet be marked as dynamic. */
1690 if (h
->dynindx
== -1
1691 && !h
->forced_local
)
1693 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1698 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
1700 asection
*s
= htab
->splt
;
1702 /* If this is the first .plt entry, make room for the special
1705 s
->size
+= PLT_FIRST_ENTRY_SIZE
;
1707 h
->plt
.offset
= s
->size
;
1709 /* If this symbol is not defined in a regular file, and we are
1710 not generating a shared library, then set the symbol to this
1711 location in the .plt. This is required to make function
1712 pointers compare as equal between the normal executable and
1713 the shared library. */
1717 h
->root
.u
.def
.section
= s
;
1718 h
->root
.u
.def
.value
= h
->plt
.offset
;
1721 /* Make room for this entry. */
1722 s
->size
+= PLT_ENTRY_SIZE
;
1724 /* We also need to make an entry in the .got.plt section, which
1725 will be placed in the .got section by the linker script. */
1726 htab
->sgotplt
->size
+= GOT_ENTRY_SIZE
;
1728 /* We also need to make an entry in the .rela.plt section. */
1729 htab
->srelplt
->size
+= sizeof (Elf64_External_Rela
);
1733 h
->plt
.offset
= (bfd_vma
) -1;
1735 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1740 h
->plt
.offset
= (bfd_vma
) -1;
1742 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1745 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1746 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1747 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1748 we can save the dynamic TLS relocation. */
1749 if (h
->got
.refcount
> 0
1752 && elf_s390_hash_entry(h
)->tls_type
>= GOT_TLS_IE
)
1754 if (elf_s390_hash_entry(h
)->tls_type
== GOT_TLS_IE_NLT
)
1755 /* For the GOTIE access without a literal pool entry the offset has
1756 to be stored somewhere. The immediate value in the instruction
1757 is not bit enough so the value is stored in the got. */
1759 h
->got
.offset
= htab
->sgot
->size
;
1760 htab
->sgot
->size
+= GOT_ENTRY_SIZE
;
1763 h
->got
.offset
= (bfd_vma
) -1;
1765 else if (h
->got
.refcount
> 0)
1769 int tls_type
= elf_s390_hash_entry(h
)->tls_type
;
1771 /* Make sure this symbol is output as a dynamic symbol.
1772 Undefined weak syms won't yet be marked as dynamic. */
1773 if (h
->dynindx
== -1
1774 && !h
->forced_local
)
1776 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1781 h
->got
.offset
= s
->size
;
1782 s
->size
+= GOT_ENTRY_SIZE
;
1783 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1784 if (tls_type
== GOT_TLS_GD
)
1785 s
->size
+= GOT_ENTRY_SIZE
;
1786 dyn
= htab
->elf
.dynamic_sections_created
;
1787 /* R_390_TLS_IE64 needs one dynamic relocation,
1788 R_390_TLS_GD64 needs one if local symbol and two if global. */
1789 if ((tls_type
== GOT_TLS_GD
&& h
->dynindx
== -1)
1790 || tls_type
>= GOT_TLS_IE
)
1791 htab
->srelgot
->size
+= sizeof (Elf64_External_Rela
);
1792 else if (tls_type
== GOT_TLS_GD
)
1793 htab
->srelgot
->size
+= 2 * sizeof (Elf64_External_Rela
);
1794 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
1795 || h
->root
.type
!= bfd_link_hash_undefweak
)
1797 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
1798 htab
->srelgot
->size
+= sizeof (Elf64_External_Rela
);
1801 h
->got
.offset
= (bfd_vma
) -1;
1803 eh
= (struct elf_s390_link_hash_entry
*) h
;
1804 if (eh
->dyn_relocs
== NULL
)
1807 /* In the shared -Bsymbolic case, discard space allocated for
1808 dynamic pc-relative relocs against symbols which turn out to be
1809 defined in regular objects. For the normal shared case, discard
1810 space for pc-relative relocs that have become local due to symbol
1811 visibility changes. */
1815 if (SYMBOL_REFERENCES_LOCAL (info
, h
))
1817 struct elf_s390_dyn_relocs
**pp
;
1819 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
1821 p
->count
-= p
->pc_count
;
1830 /* Also discard relocs on undefined weak syms with non-default
1832 if (eh
->dyn_relocs
!= NULL
1833 && h
->root
.type
== bfd_link_hash_undefweak
)
1835 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
1836 eh
->dyn_relocs
= NULL
;
1838 /* Make sure undefined weak symbols are output as a dynamic
1840 else if (h
->dynindx
== -1
1841 && !h
->forced_local
)
1843 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1848 else if (ELIMINATE_COPY_RELOCS
)
1850 /* For the non-shared case, discard space for relocs against
1851 symbols which turn out to need copy relocs or are not
1857 || (htab
->elf
.dynamic_sections_created
1858 && (h
->root
.type
== bfd_link_hash_undefweak
1859 || h
->root
.type
== bfd_link_hash_undefined
))))
1861 /* Make sure this symbol is output as a dynamic symbol.
1862 Undefined weak syms won't yet be marked as dynamic. */
1863 if (h
->dynindx
== -1
1864 && !h
->forced_local
)
1866 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1870 /* If that succeeded, we know we'll be keeping all the
1872 if (h
->dynindx
!= -1)
1876 eh
->dyn_relocs
= NULL
;
1881 /* Finally, allocate space. */
1882 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1884 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
1885 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
1891 /* Find any dynamic relocs that apply to read-only sections. */
1894 readonly_dynrelocs (h
, inf
)
1895 struct elf_link_hash_entry
*h
;
1898 struct elf_s390_link_hash_entry
*eh
;
1899 struct elf_s390_dyn_relocs
*p
;
1901 if (h
->root
.type
== bfd_link_hash_warning
)
1902 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1904 eh
= (struct elf_s390_link_hash_entry
*) h
;
1905 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1907 asection
*s
= p
->sec
->output_section
;
1909 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1911 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
1913 info
->flags
|= DF_TEXTREL
;
1915 /* Not an error, just cut short the traversal. */
1922 /* Set the sizes of the dynamic sections. */
1925 elf_s390_size_dynamic_sections (output_bfd
, info
)
1926 bfd
*output_bfd ATTRIBUTE_UNUSED
;
1927 struct bfd_link_info
*info
;
1929 struct elf_s390_link_hash_table
*htab
;
1935 htab
= elf_s390_hash_table (info
);
1936 dynobj
= htab
->elf
.dynobj
;
1940 if (htab
->elf
.dynamic_sections_created
)
1942 /* Set the contents of the .interp section to the interpreter. */
1943 if (info
->executable
)
1945 s
= bfd_get_section_by_name (dynobj
, ".interp");
1948 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1949 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1953 /* Set up .got offsets for local syms, and space for local dynamic
1955 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
1957 bfd_signed_vma
*local_got
;
1958 bfd_signed_vma
*end_local_got
;
1959 char *local_tls_type
;
1960 bfd_size_type locsymcount
;
1961 Elf_Internal_Shdr
*symtab_hdr
;
1964 if (! is_s390_elf (ibfd
))
1967 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
1969 struct elf_s390_dyn_relocs
*p
;
1971 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
1973 if (!bfd_is_abs_section (p
->sec
)
1974 && bfd_is_abs_section (p
->sec
->output_section
))
1976 /* Input section has been discarded, either because
1977 it is a copy of a linkonce section or due to
1978 linker script /DISCARD/, so we'll be discarding
1981 else if (p
->count
!= 0)
1983 srela
= elf_section_data (p
->sec
)->sreloc
;
1984 srela
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
1985 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
1986 info
->flags
|= DF_TEXTREL
;
1991 local_got
= elf_local_got_refcounts (ibfd
);
1995 symtab_hdr
= &elf_symtab_hdr (ibfd
);
1996 locsymcount
= symtab_hdr
->sh_info
;
1997 end_local_got
= local_got
+ locsymcount
;
1998 local_tls_type
= elf_s390_local_got_tls_type (ibfd
);
2000 srela
= htab
->srelgot
;
2001 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
2005 *local_got
= s
->size
;
2006 s
->size
+= GOT_ENTRY_SIZE
;
2007 if (*local_tls_type
== GOT_TLS_GD
)
2008 s
->size
+= GOT_ENTRY_SIZE
;
2010 srela
->size
+= sizeof (Elf64_External_Rela
);
2013 *local_got
= (bfd_vma
) -1;
2017 if (htab
->tls_ldm_got
.refcount
> 0)
2019 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
2021 htab
->tls_ldm_got
.offset
= htab
->sgot
->size
;
2022 htab
->sgot
->size
+= 2 * GOT_ENTRY_SIZE
;
2023 htab
->srelgot
->size
+= sizeof (Elf64_External_Rela
);
2026 htab
->tls_ldm_got
.offset
= -1;
2028 /* Allocate global sym .plt and .got entries, and space for global
2029 sym dynamic relocs. */
2030 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, (PTR
) info
);
2032 /* We now have determined the sizes of the various dynamic sections.
2033 Allocate memory for them. */
2035 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2037 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2042 || s
== htab
->sgotplt
2043 || s
== htab
->sdynbss
)
2045 /* Strip this section if we don't need it; see the
2048 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
2050 if (s
->size
!= 0 && s
!= htab
->srelplt
)
2053 /* We use the reloc_count field as a counter if we need
2054 to copy relocs into the output file. */
2059 /* It's not one of our sections, so don't allocate space. */
2065 /* If we don't need this section, strip it from the
2066 output file. This is to handle .rela.bss and
2067 .rela.plt. We must create it in
2068 create_dynamic_sections, because it must be created
2069 before the linker maps input sections to output
2070 sections. The linker does that before
2071 adjust_dynamic_symbol is called, and it is that
2072 function which decides whether anything needs to go
2073 into these sections. */
2075 s
->flags
|= SEC_EXCLUDE
;
2079 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2082 /* Allocate memory for the section contents. We use bfd_zalloc
2083 here in case unused entries are not reclaimed before the
2084 section's contents are written out. This should not happen,
2085 but this way if it does, we get a R_390_NONE reloc instead
2087 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
2088 if (s
->contents
== NULL
)
2092 if (htab
->elf
.dynamic_sections_created
)
2094 /* Add some entries to the .dynamic section. We fill in the
2095 values later, in elf_s390_finish_dynamic_sections, but we
2096 must add the entries now so that we get the correct size for
2097 the .dynamic section. The DT_DEBUG entry is filled in by the
2098 dynamic linker and used by the debugger. */
2099 #define add_dynamic_entry(TAG, VAL) \
2100 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2102 if (info
->executable
)
2104 if (!add_dynamic_entry (DT_DEBUG
, 0))
2108 if (htab
->splt
->size
!= 0)
2110 if (!add_dynamic_entry (DT_PLTGOT
, 0)
2111 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
2112 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2113 || !add_dynamic_entry (DT_JMPREL
, 0))
2119 if (!add_dynamic_entry (DT_RELA
, 0)
2120 || !add_dynamic_entry (DT_RELASZ
, 0)
2121 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
2124 /* If any dynamic relocs apply to a read-only section,
2125 then we need a DT_TEXTREL entry. */
2126 if ((info
->flags
& DF_TEXTREL
) == 0)
2127 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
,
2130 if ((info
->flags
& DF_TEXTREL
) != 0)
2132 if (!add_dynamic_entry (DT_TEXTREL
, 0))
2137 #undef add_dynamic_entry
2142 /* Return the base VMA address which should be subtracted from real addresses
2143 when resolving @dtpoff relocation.
2144 This is PT_TLS segment p_vaddr. */
2148 struct bfd_link_info
*info
;
2150 /* If tls_sec is NULL, we should have signalled an error already. */
2151 if (elf_hash_table (info
)->tls_sec
== NULL
)
2153 return elf_hash_table (info
)->tls_sec
->vma
;
2156 /* Return the relocation value for @tpoff relocation
2157 if STT_TLS virtual address is ADDRESS. */
2160 tpoff (info
, address
)
2161 struct bfd_link_info
*info
;
2164 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
2166 /* If tls_sec is NULL, we should have signalled an error already. */
2167 if (htab
->tls_sec
== NULL
)
2169 return htab
->tls_size
+ htab
->tls_sec
->vma
- address
;
2172 /* Complain if TLS instruction relocation is against an invalid
2176 invalid_tls_insn (input_bfd
, input_section
, rel
)
2178 asection
*input_section
;
2179 Elf_Internal_Rela
*rel
;
2181 reloc_howto_type
*howto
;
2183 howto
= elf_howto_table
+ ELF64_R_TYPE (rel
->r_info
);
2184 (*_bfd_error_handler
)
2185 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2188 (long) rel
->r_offset
,
2190 bfd_set_error (bfd_error_bad_value
);
2193 /* Relocate a 390 ELF section. */
2196 elf_s390_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
2197 contents
, relocs
, local_syms
, local_sections
)
2199 struct bfd_link_info
*info
;
2201 asection
*input_section
;
2203 Elf_Internal_Rela
*relocs
;
2204 Elf_Internal_Sym
*local_syms
;
2205 asection
**local_sections
;
2207 struct elf_s390_link_hash_table
*htab
;
2208 Elf_Internal_Shdr
*symtab_hdr
;
2209 struct elf_link_hash_entry
**sym_hashes
;
2210 bfd_vma
*local_got_offsets
;
2211 Elf_Internal_Rela
*rel
;
2212 Elf_Internal_Rela
*relend
;
2214 BFD_ASSERT (is_s390_elf (input_bfd
));
2216 htab
= elf_s390_hash_table (info
);
2217 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
2218 sym_hashes
= elf_sym_hashes (input_bfd
);
2219 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2222 relend
= relocs
+ input_section
->reloc_count
;
2223 for (; rel
< relend
; rel
++)
2225 unsigned int r_type
;
2226 reloc_howto_type
*howto
;
2227 unsigned long r_symndx
;
2228 struct elf_link_hash_entry
*h
;
2229 Elf_Internal_Sym
*sym
;
2233 bfd_boolean unresolved_reloc
;
2234 bfd_reloc_status_type r
;
2237 r_type
= ELF64_R_TYPE (rel
->r_info
);
2238 if (r_type
== (int) R_390_GNU_VTINHERIT
2239 || r_type
== (int) R_390_GNU_VTENTRY
)
2241 if (r_type
>= (int) R_390_max
)
2243 bfd_set_error (bfd_error_bad_value
);
2247 howto
= elf_howto_table
+ r_type
;
2248 r_symndx
= ELF64_R_SYM (rel
->r_info
);
2253 unresolved_reloc
= FALSE
;
2254 if (r_symndx
< symtab_hdr
->sh_info
)
2256 sym
= local_syms
+ r_symndx
;
2257 sec
= local_sections
[r_symndx
];
2258 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2262 bfd_boolean warned ATTRIBUTE_UNUSED
;
2264 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2265 r_symndx
, symtab_hdr
, sym_hashes
,
2267 unresolved_reloc
, warned
);
2270 if (sec
!= NULL
&& elf_discarded_section (sec
))
2272 /* For relocs against symbols from removed linkonce sections,
2273 or sections discarded by a linker script, we just want the
2274 section contents zeroed. Avoid any special processing. */
2275 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
2281 if (info
->relocatable
)
2286 case R_390_GOTPLT12
:
2287 case R_390_GOTPLT16
:
2288 case R_390_GOTPLT20
:
2289 case R_390_GOTPLT32
:
2290 case R_390_GOTPLT64
:
2291 case R_390_GOTPLTENT
:
2292 /* There are three cases for a GOTPLT relocation. 1) The
2293 relocation is against the jump slot entry of a plt that
2294 will get emitted to the output file. 2) The relocation
2295 is against the jump slot of a plt entry that has been
2296 removed. elf_s390_adjust_gotplt has created a GOT entry
2297 as replacement. 3) The relocation is against a local symbol.
2298 Cases 2) and 3) are the same as the GOT relocation code
2299 so we just have to test for case 1 and fall through for
2301 if (h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
2306 Current offset - size first entry / entry size. */
2307 plt_index
= (h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
) /
2310 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
2312 relocation
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
2313 unresolved_reloc
= FALSE
;
2315 if (r_type
== R_390_GOTPLTENT
)
2316 relocation
+= htab
->sgot
->output_section
->vma
;
2327 /* Relocation is to the entry for this symbol in the global
2329 if (htab
->sgot
== NULL
)
2336 off
= h
->got
.offset
;
2337 dyn
= htab
->elf
.dynamic_sections_created
;
2338 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
2344 || (ELF_ST_VISIBILITY (h
->other
)
2345 && h
->root
.type
== bfd_link_hash_undefweak
))
2347 /* This is actually a static link, or it is a
2348 -Bsymbolic link and the symbol is defined
2349 locally, or the symbol was forced to be local
2350 because of a version file. We must initialize
2351 this entry in the global offset table. Since the
2352 offset must always be a multiple of 2, we use the
2353 least significant bit to record whether we have
2354 initialized it already.
2356 When doing a dynamic link, we create a .rel.got
2357 relocation entry to initialize the value. This
2358 is done in the finish_dynamic_symbol routine. */
2363 bfd_put_64 (output_bfd
, relocation
,
2364 htab
->sgot
->contents
+ off
);
2369 unresolved_reloc
= FALSE
;
2373 if (local_got_offsets
== NULL
)
2376 off
= local_got_offsets
[r_symndx
];
2378 /* The offset must always be a multiple of 8. We use
2379 the least significant bit to record whether we have
2380 already generated the necessary reloc. */
2385 bfd_put_64 (output_bfd
, relocation
,
2386 htab
->sgot
->contents
+ off
);
2391 Elf_Internal_Rela outrel
;
2398 outrel
.r_offset
= (htab
->sgot
->output_section
->vma
2399 + htab
->sgot
->output_offset
2401 outrel
.r_info
= ELF64_R_INFO (0, R_390_RELATIVE
);
2402 outrel
.r_addend
= relocation
;
2404 loc
+= s
->reloc_count
++ * sizeof (Elf64_External_Rela
);
2405 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2408 local_got_offsets
[r_symndx
] |= 1;
2412 if (off
>= (bfd_vma
) -2)
2415 relocation
= htab
->sgot
->output_offset
+ off
;
2417 /* For @GOTENT the relocation is against the offset between
2418 the instruction and the symbols entry in the GOT and not
2419 between the start of the GOT and the symbols entry. We
2420 add the vma of the GOT to get the correct value. */
2421 if ( r_type
== R_390_GOTENT
2422 || r_type
== R_390_GOTPLTENT
)
2423 relocation
+= htab
->sgot
->output_section
->vma
;
2427 case R_390_GOTOFF16
:
2428 case R_390_GOTOFF32
:
2429 case R_390_GOTOFF64
:
2430 /* Relocation is relative to the start of the global offset
2433 /* Note that sgot->output_offset is not involved in this
2434 calculation. We always want the start of .got. If we
2435 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2436 permitted by the ABI, we might have to change this
2438 relocation
-= htab
->sgot
->output_section
->vma
;
2442 case R_390_GOTPCDBL
:
2443 /* Use global offset table as symbol value. */
2444 relocation
= htab
->sgot
->output_section
->vma
;
2445 unresolved_reloc
= FALSE
;
2448 case R_390_PLT16DBL
:
2450 case R_390_PLT32DBL
:
2452 /* Relocation is to the entry for this symbol in the
2453 procedure linkage table. */
2455 /* Resolve a PLT32 reloc against a local symbol directly,
2456 without using the procedure linkage table. */
2460 if (h
->plt
.offset
== (bfd_vma
) -1
2461 || htab
->splt
== NULL
)
2463 /* We didn't make a PLT entry for this symbol. This
2464 happens when statically linking PIC code, or when
2465 using -Bsymbolic. */
2469 relocation
= (htab
->splt
->output_section
->vma
2470 + htab
->splt
->output_offset
2472 unresolved_reloc
= FALSE
;
2475 case R_390_PLTOFF16
:
2476 case R_390_PLTOFF32
:
2477 case R_390_PLTOFF64
:
2478 /* Relocation is to the entry for this symbol in the
2479 procedure linkage table relative to the start of the GOT. */
2481 /* For local symbols or if we didn't make a PLT entry for
2482 this symbol resolve the symbol directly. */
2484 || h
->plt
.offset
== (bfd_vma
) -1
2485 || htab
->splt
== NULL
)
2487 relocation
-= htab
->sgot
->output_section
->vma
;
2491 relocation
= (htab
->splt
->output_section
->vma
2492 + htab
->splt
->output_offset
2494 - htab
->sgot
->output_section
->vma
);
2495 unresolved_reloc
= FALSE
;
2507 if ((input_section
->flags
& SEC_ALLOC
) == 0)
2512 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2513 || h
->root
.type
!= bfd_link_hash_undefweak
)
2514 && ((r_type
!= R_390_PC16
2515 && r_type
!= R_390_PC16DBL
2516 && r_type
!= R_390_PC32
2517 && r_type
!= R_390_PC32DBL
2518 && r_type
!= R_390_PC64
)
2520 && !SYMBOL_REFERENCES_LOCAL (info
, h
))))
2521 || (ELIMINATE_COPY_RELOCS
2528 || h
->root
.type
== bfd_link_hash_undefweak
2529 || h
->root
.type
== bfd_link_hash_undefined
)))
2531 Elf_Internal_Rela outrel
;
2532 bfd_boolean skip
, relocate
;
2536 /* When generating a shared object, these relocations
2537 are copied into the output file to be resolved at run
2543 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2545 if (outrel
.r_offset
== (bfd_vma
) -1)
2547 else if (outrel
.r_offset
== (bfd_vma
) -2)
2548 skip
= TRUE
, relocate
= TRUE
;
2550 outrel
.r_offset
+= (input_section
->output_section
->vma
2551 + input_section
->output_offset
);
2554 memset (&outrel
, 0, sizeof outrel
);
2557 && (r_type
== R_390_PC16
2558 || r_type
== R_390_PC16DBL
2559 || r_type
== R_390_PC32
2560 || r_type
== R_390_PC32DBL
2561 || r_type
== R_390_PC64
2564 || !h
->def_regular
))
2566 outrel
.r_info
= ELF64_R_INFO (h
->dynindx
, r_type
);
2567 outrel
.r_addend
= rel
->r_addend
;
2571 /* This symbol is local, or marked to become local. */
2572 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2573 if (r_type
== R_390_64
)
2576 outrel
.r_info
= ELF64_R_INFO (0, R_390_RELATIVE
);
2582 if (bfd_is_abs_section (sec
))
2584 else if (sec
== NULL
|| sec
->owner
== NULL
)
2586 bfd_set_error(bfd_error_bad_value
);
2593 osec
= sec
->output_section
;
2594 sindx
= elf_section_data (osec
)->dynindx
;
2598 osec
= htab
->elf
.text_index_section
;
2599 sindx
= elf_section_data (osec
)->dynindx
;
2601 BFD_ASSERT (sindx
!= 0);
2603 /* We are turning this relocation into one
2604 against a section symbol, so subtract out
2605 the output section's address but not the
2606 offset of the input section in the output
2608 outrel
.r_addend
-= osec
->vma
;
2610 outrel
.r_info
= ELF64_R_INFO (sindx
, r_type
);
2614 sreloc
= elf_section_data (input_section
)->sreloc
;
2618 loc
= sreloc
->contents
;
2619 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
2620 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2622 /* If this reloc is against an external symbol, we do
2623 not want to fiddle with the addend. Otherwise, we
2624 need to include the symbol value so that it becomes
2625 an addend for the dynamic reloc. */
2632 /* Relocations for tls literal pool entries. */
2633 case R_390_TLS_IE64
:
2636 Elf_Internal_Rela outrel
;
2640 outrel
.r_offset
= rel
->r_offset
2641 + input_section
->output_section
->vma
2642 + input_section
->output_offset
;
2643 outrel
.r_info
= ELF64_R_INFO (0, R_390_RELATIVE
);
2644 sreloc
= elf_section_data (input_section
)->sreloc
;
2647 loc
= sreloc
->contents
;
2648 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
2649 bfd_elf64_swap_reloc_out (output_bfd
, &outrel
, loc
);
2653 case R_390_TLS_GD64
:
2654 case R_390_TLS_GOTIE64
:
2655 r_type
= elf_s390_tls_transition (info
, r_type
, h
== NULL
);
2656 tls_type
= GOT_UNKNOWN
;
2657 if (h
== NULL
&& local_got_offsets
)
2658 tls_type
= elf_s390_local_got_tls_type (input_bfd
) [r_symndx
];
2661 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2662 if (!info
->shared
&& h
->dynindx
== -1 && tls_type
>= GOT_TLS_IE
)
2663 r_type
= R_390_TLS_LE64
;
2665 if (r_type
== R_390_TLS_GD64
&& tls_type
>= GOT_TLS_IE
)
2666 r_type
= R_390_TLS_IE64
;
2668 if (r_type
== R_390_TLS_LE64
)
2670 /* This relocation gets optimized away by the local exec
2671 access optimization. */
2672 BFD_ASSERT (! unresolved_reloc
);
2673 bfd_put_64 (output_bfd
, -tpoff (info
, relocation
),
2674 contents
+ rel
->r_offset
);
2678 if (htab
->sgot
== NULL
)
2682 off
= h
->got
.offset
;
2685 if (local_got_offsets
== NULL
)
2688 off
= local_got_offsets
[r_symndx
];
2697 Elf_Internal_Rela outrel
;
2701 if (htab
->srelgot
== NULL
)
2704 outrel
.r_offset
= (htab
->sgot
->output_section
->vma
2705 + htab
->sgot
->output_offset
+ off
);
2707 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
2708 if (r_type
== R_390_TLS_GD64
)
2709 dr_type
= R_390_TLS_DTPMOD
;
2711 dr_type
= R_390_TLS_TPOFF
;
2712 if (dr_type
== R_390_TLS_TPOFF
&& indx
== 0)
2713 outrel
.r_addend
= relocation
- dtpoff_base (info
);
2715 outrel
.r_addend
= 0;
2716 outrel
.r_info
= ELF64_R_INFO (indx
, dr_type
);
2717 loc
= htab
->srelgot
->contents
;
2718 loc
+= htab
->srelgot
->reloc_count
++
2719 * sizeof (Elf64_External_Rela
);
2720 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2722 if (r_type
== R_390_TLS_GD64
)
2726 BFD_ASSERT (! unresolved_reloc
);
2727 bfd_put_64 (output_bfd
,
2728 relocation
- dtpoff_base (info
),
2729 htab
->sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
2733 outrel
.r_info
= ELF64_R_INFO (indx
, R_390_TLS_DTPOFF
);
2734 outrel
.r_offset
+= GOT_ENTRY_SIZE
;
2735 outrel
.r_addend
= 0;
2736 htab
->srelgot
->reloc_count
++;
2737 loc
+= sizeof (Elf64_External_Rela
);
2738 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2745 local_got_offsets
[r_symndx
] |= 1;
2748 if (off
>= (bfd_vma
) -2)
2750 if (r_type
== ELF64_R_TYPE (rel
->r_info
))
2752 relocation
= htab
->sgot
->output_offset
+ off
;
2753 if (r_type
== R_390_TLS_IE64
|| r_type
== R_390_TLS_IEENT
)
2754 relocation
+= htab
->sgot
->output_section
->vma
;
2755 unresolved_reloc
= FALSE
;
2759 bfd_put_64 (output_bfd
, htab
->sgot
->output_offset
+ off
,
2760 contents
+ rel
->r_offset
);
2765 case R_390_TLS_GOTIE12
:
2766 case R_390_TLS_GOTIE20
:
2767 case R_390_TLS_IEENT
:
2770 if (local_got_offsets
== NULL
)
2772 off
= local_got_offsets
[r_symndx
];
2774 goto emit_tls_relocs
;
2778 off
= h
->got
.offset
;
2779 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2780 if (info
->shared
|| h
->dynindx
!= -1 || tls_type
< GOT_TLS_IE
)
2781 goto emit_tls_relocs
;
2784 if (htab
->sgot
== NULL
)
2787 BFD_ASSERT (! unresolved_reloc
);
2788 bfd_put_64 (output_bfd
, -tpoff (info
, relocation
),
2789 htab
->sgot
->contents
+ off
);
2790 relocation
= htab
->sgot
->output_offset
+ off
;
2791 if (r_type
== R_390_TLS_IEENT
)
2792 relocation
+= htab
->sgot
->output_section
->vma
;
2793 unresolved_reloc
= FALSE
;
2796 case R_390_TLS_LDM64
:
2798 /* The literal pool entry this relocation refers to gets ignored
2799 by the optimized code of the local exec model. Do nothing
2800 and the value will turn out zero. */
2803 if (htab
->sgot
== NULL
)
2806 off
= htab
->tls_ldm_got
.offset
;
2811 Elf_Internal_Rela outrel
;
2814 if (htab
->srelgot
== NULL
)
2817 outrel
.r_offset
= (htab
->sgot
->output_section
->vma
2818 + htab
->sgot
->output_offset
+ off
);
2820 bfd_put_64 (output_bfd
, 0,
2821 htab
->sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
2822 outrel
.r_info
= ELF64_R_INFO (0, R_390_TLS_DTPMOD
);
2823 outrel
.r_addend
= 0;
2824 loc
= htab
->srelgot
->contents
;
2825 loc
+= htab
->srelgot
->reloc_count
++
2826 * sizeof (Elf64_External_Rela
);
2827 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2828 htab
->tls_ldm_got
.offset
|= 1;
2830 relocation
= htab
->sgot
->output_offset
+ off
;
2831 unresolved_reloc
= FALSE
;
2834 case R_390_TLS_LE64
:
2837 /* Linking a shared library with non-fpic code requires
2838 a R_390_TLS_TPOFF relocation. */
2839 Elf_Internal_Rela outrel
;
2844 outrel
.r_offset
= rel
->r_offset
2845 + input_section
->output_section
->vma
2846 + input_section
->output_offset
;
2847 if (h
!= NULL
&& h
->dynindx
!= -1)
2851 outrel
.r_info
= ELF64_R_INFO (indx
, R_390_TLS_TPOFF
);
2853 outrel
.r_addend
= relocation
- dtpoff_base (info
);
2855 outrel
.r_addend
= 0;
2856 sreloc
= elf_section_data (input_section
)->sreloc
;
2859 loc
= sreloc
->contents
;
2860 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
2861 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2865 BFD_ASSERT (! unresolved_reloc
);
2866 bfd_put_64 (output_bfd
, -tpoff (info
, relocation
),
2867 contents
+ rel
->r_offset
);
2871 case R_390_TLS_LDO64
:
2873 relocation
-= dtpoff_base (info
);
2875 /* When converting LDO to LE, we must negate. */
2876 relocation
= -tpoff (info
, relocation
);
2879 /* Relocations for tls instructions. */
2880 case R_390_TLS_LOAD
:
2881 case R_390_TLS_GDCALL
:
2882 case R_390_TLS_LDCALL
:
2883 tls_type
= GOT_UNKNOWN
;
2884 if (h
== NULL
&& local_got_offsets
)
2885 tls_type
= elf_s390_local_got_tls_type (input_bfd
) [r_symndx
];
2887 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2889 if (tls_type
== GOT_TLS_GD
)
2892 if (r_type
== R_390_TLS_LOAD
)
2894 if (!info
->shared
&& (h
== NULL
|| h
->dynindx
== -1))
2896 /* IE->LE transition. Four valid cases:
2897 lg %rx,(0,%ry) -> sllg %rx,%ry,0
2898 lg %rx,(%ry,0) -> sllg %rx,%ry,0
2899 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
2900 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
2901 unsigned int insn0
, insn1
, ry
;
2903 insn0
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2904 insn1
= bfd_get_16 (input_bfd
, contents
+ rel
->r_offset
+ 4);
2905 if (insn1
!= 0x0004)
2906 invalid_tls_insn (input_bfd
, input_section
, rel
);
2908 if ((insn0
& 0xff00f000) == 0xe3000000)
2909 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
2910 ry
= (insn0
& 0x000f0000);
2911 else if ((insn0
& 0xff0f0000) == 0xe3000000)
2912 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
2913 ry
= (insn0
& 0x0000f000) << 4;
2914 else if ((insn0
& 0xff00f000) == 0xe300c000)
2915 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
2916 ry
= (insn0
& 0x000f0000);
2917 else if ((insn0
& 0xff0f0000) == 0xe30c0000)
2918 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
2919 ry
= (insn0
& 0x0000f000) << 4;
2921 invalid_tls_insn (input_bfd
, input_section
, rel
);
2922 insn0
= 0xeb000000 | (insn0
& 0x00f00000) | ry
;
2924 bfd_put_32 (output_bfd
, insn0
, contents
+ rel
->r_offset
);
2925 bfd_put_16 (output_bfd
, insn1
, contents
+ rel
->r_offset
+ 4);
2928 else if (r_type
== R_390_TLS_GDCALL
)
2930 unsigned int insn0
, insn1
;
2932 insn0
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2933 insn1
= bfd_get_16 (input_bfd
, contents
+ rel
->r_offset
+ 4);
2934 if ((insn0
& 0xffff0000) != 0xc0e50000)
2935 invalid_tls_insn (input_bfd
, input_section
, rel
);
2936 if (!info
->shared
&& (h
== NULL
|| h
->dynindx
== -1))
2938 /* GD->LE transition.
2939 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
2945 /* GD->IE transition.
2946 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
2950 bfd_put_32 (output_bfd
, insn0
, contents
+ rel
->r_offset
);
2951 bfd_put_16 (output_bfd
, insn1
, contents
+ rel
->r_offset
+ 4);
2953 else if (r_type
== R_390_TLS_LDCALL
)
2957 unsigned int insn0
, insn1
;
2959 insn0
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2960 insn1
= bfd_get_16 (input_bfd
, contents
+ rel
->r_offset
+ 4);
2961 if ((insn0
& 0xffff0000) != 0xc0e50000)
2962 invalid_tls_insn (input_bfd
, input_section
, rel
);
2963 /* LD->LE transition.
2964 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
2967 bfd_put_32 (output_bfd
, insn0
, contents
+ rel
->r_offset
);
2968 bfd_put_16 (output_bfd
, insn1
, contents
+ rel
->r_offset
+ 4);
2977 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
2978 because such sections are not SEC_ALLOC and thus ld.so will
2979 not process them. */
2980 if (unresolved_reloc
2981 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
2983 (*_bfd_error_handler
)
2984 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
2987 (long) rel
->r_offset
,
2989 h
->root
.root
.string
);
2991 if (r_type
== R_390_20
2992 || r_type
== R_390_GOT20
2993 || r_type
== R_390_GOTPLT20
2994 || r_type
== R_390_TLS_GOTIE20
)
2996 relocation
+= rel
->r_addend
;
2997 relocation
= (relocation
&0xfff) << 8 | (relocation
&0xff000) >> 12;
2998 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2999 contents
, rel
->r_offset
,
3003 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3004 contents
, rel
->r_offset
,
3005 relocation
, rel
->r_addend
);
3007 if (r
!= bfd_reloc_ok
)
3012 name
= h
->root
.root
.string
;
3015 name
= bfd_elf_string_from_elf_section (input_bfd
,
3016 symtab_hdr
->sh_link
,
3021 name
= bfd_section_name (input_bfd
, sec
);
3024 if (r
== bfd_reloc_overflow
)
3027 if (! ((*info
->callbacks
->reloc_overflow
)
3028 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
3029 (bfd_vma
) 0, input_bfd
, input_section
,
3035 (*_bfd_error_handler
)
3036 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3037 input_bfd
, input_section
,
3038 (long) rel
->r_offset
, name
, (int) r
);
3047 /* Finish up dynamic symbol handling. We set the contents of various
3048 dynamic sections here. */
3051 elf_s390_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
3053 struct bfd_link_info
*info
;
3054 struct elf_link_hash_entry
*h
;
3055 Elf_Internal_Sym
*sym
;
3057 struct elf_s390_link_hash_table
*htab
;
3059 htab
= elf_s390_hash_table (info
);
3061 if (h
->plt
.offset
!= (bfd_vma
) -1)
3065 Elf_Internal_Rela rela
;
3068 /* This symbol has an entry in the procedure linkage table. Set
3071 if (h
->dynindx
== -1
3072 || htab
->splt
== NULL
3073 || htab
->sgotplt
== NULL
3074 || htab
->srelplt
== NULL
)
3078 Current offset - size first entry / entry size. */
3079 plt_index
= (h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
) / PLT_ENTRY_SIZE
;
3081 /* Offset in GOT is PLT index plus GOT headers(3) times 8,
3083 got_offset
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
3085 /* Fill in the blueprint of a PLT. */
3086 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD0
,
3087 htab
->splt
->contents
+ h
->plt
.offset
);
3088 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD1
,
3089 htab
->splt
->contents
+ h
->plt
.offset
+ 4);
3090 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD2
,
3091 htab
->splt
->contents
+ h
->plt
.offset
+ 8);
3092 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD3
,
3093 htab
->splt
->contents
+ h
->plt
.offset
+ 12);
3094 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD4
,
3095 htab
->splt
->contents
+ h
->plt
.offset
+ 16);
3096 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD5
,
3097 htab
->splt
->contents
+ h
->plt
.offset
+ 20);
3098 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD6
,
3099 htab
->splt
->contents
+ h
->plt
.offset
+ 24);
3100 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD7
,
3101 htab
->splt
->contents
+ h
->plt
.offset
+ 28);
3102 /* Fixup the relative address to the GOT entry */
3103 bfd_put_32 (output_bfd
,
3104 (htab
->sgotplt
->output_section
->vma
+
3105 htab
->sgotplt
->output_offset
+ got_offset
3106 - (htab
->splt
->output_section
->vma
+ h
->plt
.offset
))/2,
3107 htab
->splt
->contents
+ h
->plt
.offset
+ 2);
3108 /* Fixup the relative branch to PLT 0 */
3109 bfd_put_32 (output_bfd
, - (PLT_FIRST_ENTRY_SIZE
+
3110 (PLT_ENTRY_SIZE
* plt_index
) + 22)/2,
3111 htab
->splt
->contents
+ h
->plt
.offset
+ 24);
3112 /* Fixup offset into symbol table */
3113 bfd_put_32 (output_bfd
, plt_index
* sizeof (Elf64_External_Rela
),
3114 htab
->splt
->contents
+ h
->plt
.offset
+ 28);
3116 /* Fill in the entry in the global offset table.
3117 Points to instruction after GOT offset. */
3118 bfd_put_64 (output_bfd
,
3119 (htab
->splt
->output_section
->vma
3120 + htab
->splt
->output_offset
3123 htab
->sgotplt
->contents
+ got_offset
);
3125 /* Fill in the entry in the .rela.plt section. */
3126 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
3127 + htab
->sgotplt
->output_offset
3129 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_390_JMP_SLOT
);
3131 loc
= htab
->srelplt
->contents
+ plt_index
* sizeof (Elf64_External_Rela
);
3132 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
3134 if (!h
->def_regular
)
3136 /* Mark the symbol as undefined, rather than as defined in
3137 the .plt section. Leave the value alone. This is a clue
3138 for the dynamic linker, to make function pointer
3139 comparisons work between an application and shared
3141 sym
->st_shndx
= SHN_UNDEF
;
3145 if (h
->got
.offset
!= (bfd_vma
) -1
3146 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_GD
3147 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_IE
3148 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_IE_NLT
)
3150 Elf_Internal_Rela rela
;
3153 /* This symbol has an entry in the global offset table. Set it
3155 if (htab
->sgot
== NULL
|| htab
->srelgot
== NULL
)
3158 rela
.r_offset
= (htab
->sgot
->output_section
->vma
3159 + htab
->sgot
->output_offset
3160 + (h
->got
.offset
&~ (bfd_vma
) 1));
3162 /* If this is a static link, or it is a -Bsymbolic link and the
3163 symbol is defined locally or was forced to be local because
3164 of a version file, we just want to emit a RELATIVE reloc.
3165 The entry in the global offset table will already have been
3166 initialized in the relocate_section function. */
3173 BFD_ASSERT((h
->got
.offset
& 1) != 0);
3174 rela
.r_info
= ELF64_R_INFO (0, R_390_RELATIVE
);
3175 rela
.r_addend
= (h
->root
.u
.def
.value
3176 + h
->root
.u
.def
.section
->output_section
->vma
3177 + h
->root
.u
.def
.section
->output_offset
);
3181 BFD_ASSERT((h
->got
.offset
& 1) == 0);
3182 bfd_put_64 (output_bfd
, (bfd_vma
) 0, htab
->sgot
->contents
+ h
->got
.offset
);
3183 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_390_GLOB_DAT
);
3187 loc
= htab
->srelgot
->contents
;
3188 loc
+= htab
->srelgot
->reloc_count
++ * sizeof (Elf64_External_Rela
);
3189 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
3194 Elf_Internal_Rela rela
;
3197 /* This symbols needs a copy reloc. Set it up. */
3199 if (h
->dynindx
== -1
3200 || (h
->root
.type
!= bfd_link_hash_defined
3201 && h
->root
.type
!= bfd_link_hash_defweak
)
3202 || htab
->srelbss
== NULL
)
3205 rela
.r_offset
= (h
->root
.u
.def
.value
3206 + h
->root
.u
.def
.section
->output_section
->vma
3207 + h
->root
.u
.def
.section
->output_offset
);
3208 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_390_COPY
);
3210 loc
= htab
->srelbss
->contents
;
3211 loc
+= htab
->srelbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
3212 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
3215 /* Mark some specially defined symbols as absolute. */
3216 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
3217 || h
== htab
->elf
.hgot
3218 || h
== htab
->elf
.hplt
)
3219 sym
->st_shndx
= SHN_ABS
;
3224 /* Used to decide how to sort relocs in an optimal manner for the
3225 dynamic linker, before writing them out. */
3227 static enum elf_reloc_type_class
3228 elf_s390_reloc_type_class (rela
)
3229 const Elf_Internal_Rela
*rela
;
3231 switch ((int) ELF64_R_TYPE (rela
->r_info
))
3233 case R_390_RELATIVE
:
3234 return reloc_class_relative
;
3235 case R_390_JMP_SLOT
:
3236 return reloc_class_plt
;
3238 return reloc_class_copy
;
3240 return reloc_class_normal
;
3244 /* Finish up the dynamic sections. */
3247 elf_s390_finish_dynamic_sections (output_bfd
, info
)
3249 struct bfd_link_info
*info
;
3251 struct elf_s390_link_hash_table
*htab
;
3255 htab
= elf_s390_hash_table (info
);
3256 dynobj
= htab
->elf
.dynobj
;
3257 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
3259 if (htab
->elf
.dynamic_sections_created
)
3261 Elf64_External_Dyn
*dyncon
, *dynconend
;
3263 if (sdyn
== NULL
|| htab
->sgot
== NULL
)
3266 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
3267 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3268 for (; dyncon
< dynconend
; dyncon
++)
3270 Elf_Internal_Dyn dyn
;
3273 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3281 dyn
.d_un
.d_ptr
= htab
->sgot
->output_section
->vma
;
3285 dyn
.d_un
.d_ptr
= htab
->srelplt
->output_section
->vma
;
3289 s
= htab
->srelplt
->output_section
;
3290 dyn
.d_un
.d_val
= s
->size
;
3294 /* The procedure linkage table relocs (DT_JMPREL) should
3295 not be included in the overall relocs (DT_RELA).
3296 Therefore, we override the DT_RELASZ entry here to
3297 make it not include the JMPREL relocs. Since the
3298 linker script arranges for .rela.plt to follow all
3299 other relocation sections, we don't have to worry
3300 about changing the DT_RELA entry. */
3301 s
= htab
->srelplt
->output_section
;
3302 dyn
.d_un
.d_val
-= s
->size
;
3306 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3309 /* Fill in the special first entry in the procedure linkage table. */
3310 if (htab
->splt
&& htab
->splt
->size
> 0)
3312 /* fill in blueprint for plt 0 entry */
3313 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD0
,
3314 htab
->splt
->contents
);
3315 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD1
,
3316 htab
->splt
->contents
+4 );
3317 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD3
,
3318 htab
->splt
->contents
+12 );
3319 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD4
,
3320 htab
->splt
->contents
+16 );
3321 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD5
,
3322 htab
->splt
->contents
+20 );
3323 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD6
,
3324 htab
->splt
->contents
+ 24);
3325 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD7
,
3326 htab
->splt
->contents
+ 28 );
3327 /* Fixup relative address to start of GOT */
3328 bfd_put_32 (output_bfd
,
3329 (htab
->sgotplt
->output_section
->vma
+
3330 htab
->sgotplt
->output_offset
3331 - htab
->splt
->output_section
->vma
- 6)/2,
3332 htab
->splt
->contents
+ 8);
3334 elf_section_data (htab
->splt
->output_section
)
3335 ->this_hdr
.sh_entsize
= PLT_ENTRY_SIZE
;
3340 /* Fill in the first three entries in the global offset table. */
3341 if (htab
->sgotplt
->size
> 0)
3343 bfd_put_64 (output_bfd
,
3344 (sdyn
== NULL
? (bfd_vma
) 0
3345 : sdyn
->output_section
->vma
+ sdyn
->output_offset
),
3346 htab
->sgotplt
->contents
);
3347 /* One entry for shared object struct ptr. */
3348 bfd_put_64 (output_bfd
, (bfd_vma
) 0, htab
->sgotplt
->contents
+ 8);
3349 /* One entry for _dl_runtime_resolve. */
3350 bfd_put_64 (output_bfd
, (bfd_vma
) 0, htab
->sgotplt
->contents
+ 12);
3353 elf_section_data (htab
->sgot
->output_section
)
3354 ->this_hdr
.sh_entsize
= 8;
3359 /* Return address for Ith PLT stub in section PLT, for relocation REL
3360 or (bfd_vma) -1 if it should not be included. */
3363 elf_s390_plt_sym_val (bfd_vma i
, const asection
*plt
,
3364 const arelent
*rel ATTRIBUTE_UNUSED
)
3366 return plt
->vma
+ PLT_FIRST_ENTRY_SIZE
+ i
* PLT_ENTRY_SIZE
;
3370 /* Why was the hash table entry size definition changed from
3371 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3372 this is the only reason for the s390_elf64_size_info structure. */
3374 const struct elf_size_info s390_elf64_size_info
=
3376 sizeof (Elf64_External_Ehdr
),
3377 sizeof (Elf64_External_Phdr
),
3378 sizeof (Elf64_External_Shdr
),
3379 sizeof (Elf64_External_Rel
),
3380 sizeof (Elf64_External_Rela
),
3381 sizeof (Elf64_External_Sym
),
3382 sizeof (Elf64_External_Dyn
),
3383 sizeof (Elf_External_Note
),
3384 8, /* hash-table entry size. */
3385 1, /* internal relocations per external relocations. */
3386 64, /* arch_size. */
3387 3, /* log_file_align. */
3388 ELFCLASS64
, EV_CURRENT
,
3389 bfd_elf64_write_out_phdrs
,
3390 bfd_elf64_write_shdrs_and_ehdr
,
3391 bfd_elf64_checksum_contents
,
3392 bfd_elf64_write_relocs
,
3393 bfd_elf64_swap_symbol_in
,
3394 bfd_elf64_swap_symbol_out
,
3395 bfd_elf64_slurp_reloc_table
,
3396 bfd_elf64_slurp_symbol_table
,
3397 bfd_elf64_swap_dyn_in
,
3398 bfd_elf64_swap_dyn_out
,
3399 bfd_elf64_swap_reloc_in
,
3400 bfd_elf64_swap_reloc_out
,
3401 bfd_elf64_swap_reloca_in
,
3402 bfd_elf64_swap_reloca_out
3405 #define TARGET_BIG_SYM bfd_elf64_s390_vec
3406 #define TARGET_BIG_NAME "elf64-s390"
3407 #define ELF_ARCH bfd_arch_s390
3408 #define ELF_MACHINE_CODE EM_S390
3409 #define ELF_MACHINE_ALT1 EM_S390_OLD
3410 #define ELF_MAXPAGESIZE 0x1000
3412 #define elf_backend_size_info s390_elf64_size_info
3414 #define elf_backend_can_gc_sections 1
3415 #define elf_backend_can_refcount 1
3416 #define elf_backend_want_got_plt 1
3417 #define elf_backend_plt_readonly 1
3418 #define elf_backend_want_plt_sym 0
3419 #define elf_backend_got_header_size 24
3420 #define elf_backend_rela_normal 1
3422 #define elf_info_to_howto elf_s390_info_to_howto
3424 #define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3425 #define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3426 #define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3427 #define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
3429 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3430 #define elf_backend_check_relocs elf_s390_check_relocs
3431 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3432 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3433 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3434 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3435 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3436 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3437 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3438 #define elf_backend_relocate_section elf_s390_relocate_section
3439 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3440 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3441 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3442 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
3444 #define bfd_elf64_mkobject elf_s390_mkobject
3445 #define elf_backend_object_p elf_s390_object_p
3447 #include "elf64-target.h"