1 /* IBM S/390-specific support for 32-bit ELF
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005
3 Free Software Foundation, Inc.
4 Contributed by Carl B. Pedersen and Martin Schwidefsky.
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 2 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 ((const struct elf_backend_data
*, 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 static asection
*elf_s390_gc_mark_hook
50 PARAMS ((asection
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
51 struct elf_link_hash_entry
*, Elf_Internal_Sym
*));
52 static bfd_boolean elf_s390_gc_sweep_hook
53 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
54 const Elf_Internal_Rela
*));
55 struct elf_s390_link_hash_entry
;
56 static void elf_s390_adjust_gotplt
57 PARAMS ((struct elf_s390_link_hash_entry
*));
58 static bfd_boolean elf_s390_adjust_dynamic_symbol
59 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
60 static bfd_boolean allocate_dynrelocs
61 PARAMS ((struct elf_link_hash_entry
*, PTR
));
62 static bfd_boolean readonly_dynrelocs
63 PARAMS ((struct elf_link_hash_entry
*, PTR
));
64 static bfd_boolean elf_s390_size_dynamic_sections
65 PARAMS ((bfd
*, struct bfd_link_info
*));
66 static bfd_boolean elf_s390_relocate_section
67 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
68 Elf_Internal_Rela
*, Elf_Internal_Sym
*, asection
**));
69 static bfd_boolean elf_s390_finish_dynamic_symbol
70 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*,
72 static enum elf_reloc_type_class elf_s390_reloc_type_class
73 PARAMS ((const Elf_Internal_Rela
*));
74 static bfd_boolean elf_s390_finish_dynamic_sections
75 PARAMS ((bfd
*, struct bfd_link_info
*));
76 static bfd_boolean elf_s390_mkobject
78 static bfd_boolean elf_s390_object_p
80 static bfd_boolean elf_s390_grok_prstatus
81 PARAMS ((bfd
*, Elf_Internal_Note
*));
82 static int elf_s390_tls_transition
83 PARAMS ((struct bfd_link_info
*, int, int));
84 static bfd_reloc_status_type s390_tls_reloc
85 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
86 static bfd_vma dtpoff_base
87 PARAMS ((struct bfd_link_info
*));
89 PARAMS ((struct bfd_link_info
*, bfd_vma
));
90 static void invalid_tls_insn
91 PARAMS ((bfd
*, asection
*, Elf_Internal_Rela
*));
92 static bfd_reloc_status_type s390_elf_ldisp_reloc
93 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
97 /* The relocation "howto" table. */
99 static reloc_howto_type elf_howto_table
[] =
101 HOWTO (R_390_NONE
, /* type */
103 0, /* size (0 = byte, 1 = short, 2 = long) */
105 FALSE
, /* pc_relative */
107 complain_overflow_dont
, /* complain_on_overflow */
108 bfd_elf_generic_reloc
, /* special_function */
109 "R_390_NONE", /* name */
110 FALSE
, /* partial_inplace */
113 FALSE
), /* pcrel_offset */
115 HOWTO(R_390_8
, 0, 0, 8, FALSE
, 0, complain_overflow_bitfield
,
116 bfd_elf_generic_reloc
, "R_390_8", FALSE
, 0,0x000000ff, FALSE
),
117 HOWTO(R_390_12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
118 bfd_elf_generic_reloc
, "R_390_12", FALSE
, 0,0x00000fff, FALSE
),
119 HOWTO(R_390_16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
120 bfd_elf_generic_reloc
, "R_390_16", FALSE
, 0,0x0000ffff, FALSE
),
121 HOWTO(R_390_32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
122 bfd_elf_generic_reloc
, "R_390_32", FALSE
, 0,0xffffffff, FALSE
),
123 HOWTO(R_390_PC32
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
124 bfd_elf_generic_reloc
, "R_390_PC32", FALSE
, 0,0xffffffff, TRUE
),
125 HOWTO(R_390_GOT12
, 0, 1, 12, FALSE
, 0, complain_overflow_bitfield
,
126 bfd_elf_generic_reloc
, "R_390_GOT12", FALSE
, 0,0x00000fff, FALSE
),
127 HOWTO(R_390_GOT32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
128 bfd_elf_generic_reloc
, "R_390_GOT32", FALSE
, 0,0xffffffff, FALSE
),
129 HOWTO(R_390_PLT32
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
130 bfd_elf_generic_reloc
, "R_390_PLT32", FALSE
, 0,0xffffffff, TRUE
),
131 HOWTO(R_390_COPY
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
132 bfd_elf_generic_reloc
, "R_390_COPY", FALSE
, 0,0xffffffff, FALSE
),
133 HOWTO(R_390_GLOB_DAT
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
134 bfd_elf_generic_reloc
, "R_390_GLOB_DAT", FALSE
, 0,0xffffffff, FALSE
),
135 HOWTO(R_390_JMP_SLOT
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
136 bfd_elf_generic_reloc
, "R_390_JMP_SLOT", FALSE
, 0,0xffffffff, FALSE
),
137 HOWTO(R_390_RELATIVE
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
138 bfd_elf_generic_reloc
, "R_390_RELATIVE", FALSE
, 0,0xffffffff, FALSE
),
139 HOWTO(R_390_GOTOFF32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
140 bfd_elf_generic_reloc
, "R_390_GOTOFF32", FALSE
, 0,0xffffffff, FALSE
),
141 HOWTO(R_390_GOTPC
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
142 bfd_elf_generic_reloc
, "R_390_GOTPC", FALSE
, 0,0xffffffff, TRUE
),
143 HOWTO(R_390_GOT16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
144 bfd_elf_generic_reloc
, "R_390_GOT16", FALSE
, 0,0x0000ffff, FALSE
),
145 HOWTO(R_390_PC16
, 0, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
146 bfd_elf_generic_reloc
, "R_390_PC16", FALSE
, 0,0x0000ffff, TRUE
),
147 HOWTO(R_390_PC16DBL
, 1, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
148 bfd_elf_generic_reloc
, "R_390_PC16DBL", FALSE
, 0,0x0000ffff, TRUE
),
149 HOWTO(R_390_PLT16DBL
, 1, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
150 bfd_elf_generic_reloc
, "R_390_PLT16DBL", FALSE
, 0,0x0000ffff, TRUE
),
151 HOWTO(R_390_PC32DBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
152 bfd_elf_generic_reloc
, "R_390_PC32DBL", FALSE
, 0,0xffffffff, TRUE
),
153 HOWTO(R_390_PLT32DBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
154 bfd_elf_generic_reloc
, "R_390_PLT32DBL", FALSE
, 0,0xffffffff, TRUE
),
155 HOWTO(R_390_GOTPCDBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
156 bfd_elf_generic_reloc
, "R_390_GOTPCDBL", FALSE
, 0,0xffffffff, TRUE
),
157 EMPTY_HOWTO (R_390_64
), /* Empty entry for R_390_64. */
158 EMPTY_HOWTO (R_390_PC64
), /* Empty entry for R_390_PC64. */
159 EMPTY_HOWTO (R_390_GOT64
), /* Empty entry for R_390_GOT64. */
160 EMPTY_HOWTO (R_390_PLT64
), /* Empty entry for R_390_PLT64. */
161 HOWTO(R_390_GOTENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
162 bfd_elf_generic_reloc
, "R_390_GOTENT", FALSE
, 0,0xffffffff, TRUE
),
163 HOWTO(R_390_GOTOFF16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
164 bfd_elf_generic_reloc
, "R_390_GOTOFF16", FALSE
, 0,0x0000ffff, FALSE
),
165 EMPTY_HOWTO (R_390_GOTOFF64
), /* Empty entry for R_390_GOTOFF64. */
166 HOWTO(R_390_GOTPLT12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
167 bfd_elf_generic_reloc
, "R_390_GOTPLT12", FALSE
, 0,0x00000fff, FALSE
),
168 HOWTO(R_390_GOTPLT16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
169 bfd_elf_generic_reloc
, "R_390_GOTPLT16", FALSE
, 0,0x0000ffff, FALSE
),
170 HOWTO(R_390_GOTPLT32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
171 bfd_elf_generic_reloc
, "R_390_GOTPLT32", FALSE
, 0,0xffffffff, FALSE
),
172 EMPTY_HOWTO (R_390_GOTPLT64
), /* Empty entry for R_390_GOTPLT64. */
173 HOWTO(R_390_GOTPLTENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
174 bfd_elf_generic_reloc
, "R_390_GOTPLTENT",FALSE
, 0,0xffffffff, TRUE
),
175 HOWTO(R_390_PLTOFF16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
176 bfd_elf_generic_reloc
, "R_390_PLTOFF16", FALSE
, 0,0x0000ffff, FALSE
),
177 HOWTO(R_390_PLTOFF32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
178 bfd_elf_generic_reloc
, "R_390_PLTOFF32", FALSE
, 0,0xffffffff, FALSE
),
179 EMPTY_HOWTO (R_390_PLTOFF64
), /* Empty entry for R_390_PLTOFF64. */
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 HOWTO(R_390_TLS_GD32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
187 bfd_elf_generic_reloc
, "R_390_TLS_GD32", FALSE
, 0, 0xffffffff, FALSE
),
188 EMPTY_HOWTO (R_390_TLS_GD64
), /* Empty entry for R_390_TLS_GD64. */
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 HOWTO(R_390_TLS_GOTIE32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
192 bfd_elf_generic_reloc
, "R_390_TLS_GOTIE32", FALSE
, 0, 0xffffffff, FALSE
),
193 EMPTY_HOWTO (R_390_TLS_GOTIE64
), /* Empty entry for R_390_TLS_GOTIE64. */
194 HOWTO(R_390_TLS_LDM32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
195 bfd_elf_generic_reloc
, "R_390_TLS_LDM32", FALSE
, 0, 0xffffffff, FALSE
),
196 EMPTY_HOWTO (R_390_TLS_LDM64
), /* Empty entry for R_390_TLS_LDM64. */
197 HOWTO(R_390_TLS_IE32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
198 bfd_elf_generic_reloc
, "R_390_TLS_IE32", FALSE
, 0, 0xffffffff, FALSE
),
199 EMPTY_HOWTO (R_390_TLS_IE64
), /* Empty entry for R_390_TLS_IE64. */
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, 0xffffffff, TRUE
),
202 HOWTO(R_390_TLS_LE32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
203 bfd_elf_generic_reloc
, "R_390_TLS_LE32", FALSE
, 0, 0xffffffff, FALSE
),
204 EMPTY_HOWTO (R_390_TLS_LE64
), /* Empty entry for R_390_TLS_LE64. */
205 HOWTO(R_390_TLS_LDO32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
206 bfd_elf_generic_reloc
, "R_390_TLS_LDO32", FALSE
, 0, 0xffffffff, FALSE
),
207 EMPTY_HOWTO (R_390_TLS_LDO64
), /* Empty entry for R_390_TLS_LDO64. */
208 HOWTO(R_390_TLS_DTPMOD
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
209 bfd_elf_generic_reloc
, "R_390_TLS_DTPMOD", FALSE
, 0, 0xffffffff, FALSE
),
210 HOWTO(R_390_TLS_DTPOFF
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
211 bfd_elf_generic_reloc
, "R_390_TLS_DTPOFF", FALSE
, 0, 0xffffffff, FALSE
),
212 HOWTO(R_390_TLS_TPOFF
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
213 bfd_elf_generic_reloc
, "R_390_TLS_TPOFF", FALSE
, 0, 0xffffffff, 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 elf32_s390_vtinherit_howto
=
226 HOWTO (R_390_GNU_VTINHERIT
, 0,2,0,FALSE
,0,complain_overflow_dont
, NULL
, "R_390_GNU_VTINHERIT", FALSE
,0, 0, FALSE
);
227 static reloc_howto_type elf32_s390_vtentry_howto
=
228 HOWTO (R_390_GNU_VTENTRY
, 0,2,0,FALSE
,0,complain_overflow_dont
, _bfd_elf_rel_vtable_reloc_fn
,"R_390_GNU_VTENTRY", FALSE
,0,0, FALSE
);
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
];
283 case BFD_RELOC_390_GOTENT
:
284 return &elf_howto_table
[(int) R_390_GOTENT
];
285 case BFD_RELOC_16_GOTOFF
:
286 return &elf_howto_table
[(int) R_390_GOTOFF16
];
287 case BFD_RELOC_390_GOTPLT12
:
288 return &elf_howto_table
[(int) R_390_GOTPLT12
];
289 case BFD_RELOC_390_GOTPLT16
:
290 return &elf_howto_table
[(int) R_390_GOTPLT16
];
291 case BFD_RELOC_390_GOTPLT32
:
292 return &elf_howto_table
[(int) R_390_GOTPLT32
];
293 case BFD_RELOC_390_GOTPLTENT
:
294 return &elf_howto_table
[(int) R_390_GOTPLTENT
];
295 case BFD_RELOC_390_PLTOFF16
:
296 return &elf_howto_table
[(int) R_390_PLTOFF16
];
297 case BFD_RELOC_390_PLTOFF32
:
298 return &elf_howto_table
[(int) R_390_PLTOFF32
];
299 case BFD_RELOC_390_TLS_LOAD
:
300 return &elf_howto_table
[(int) R_390_TLS_LOAD
];
301 case BFD_RELOC_390_TLS_GDCALL
:
302 return &elf_howto_table
[(int) R_390_TLS_GDCALL
];
303 case BFD_RELOC_390_TLS_LDCALL
:
304 return &elf_howto_table
[(int) R_390_TLS_LDCALL
];
305 case BFD_RELOC_390_TLS_GD32
:
306 return &elf_howto_table
[(int) R_390_TLS_GD32
];
307 case BFD_RELOC_390_TLS_GOTIE12
:
308 return &elf_howto_table
[(int) R_390_TLS_GOTIE12
];
309 case BFD_RELOC_390_TLS_GOTIE32
:
310 return &elf_howto_table
[(int) R_390_TLS_GOTIE32
];
311 case BFD_RELOC_390_TLS_LDM32
:
312 return &elf_howto_table
[(int) R_390_TLS_LDM32
];
313 case BFD_RELOC_390_TLS_IE32
:
314 return &elf_howto_table
[(int) R_390_TLS_IE32
];
315 case BFD_RELOC_390_TLS_IEENT
:
316 return &elf_howto_table
[(int) R_390_TLS_IEENT
];
317 case BFD_RELOC_390_TLS_LE32
:
318 return &elf_howto_table
[(int) R_390_TLS_LE32
];
319 case BFD_RELOC_390_TLS_LDO32
:
320 return &elf_howto_table
[(int) R_390_TLS_LDO32
];
321 case BFD_RELOC_390_TLS_DTPMOD
:
322 return &elf_howto_table
[(int) R_390_TLS_DTPMOD
];
323 case BFD_RELOC_390_TLS_DTPOFF
:
324 return &elf_howto_table
[(int) R_390_TLS_DTPOFF
];
325 case BFD_RELOC_390_TLS_TPOFF
:
326 return &elf_howto_table
[(int) R_390_TLS_TPOFF
];
327 case BFD_RELOC_390_20
:
328 return &elf_howto_table
[(int) R_390_20
];
329 case BFD_RELOC_390_GOT20
:
330 return &elf_howto_table
[(int) R_390_GOT20
];
331 case BFD_RELOC_390_GOTPLT20
:
332 return &elf_howto_table
[(int) R_390_GOTPLT20
];
333 case BFD_RELOC_390_TLS_GOTIE20
:
334 return &elf_howto_table
[(int) R_390_TLS_GOTIE20
];
335 case BFD_RELOC_VTABLE_INHERIT
:
336 return &elf32_s390_vtinherit_howto
;
337 case BFD_RELOC_VTABLE_ENTRY
:
338 return &elf32_s390_vtentry_howto
;
345 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
346 and elf32-s390.c has its own copy. */
349 elf_s390_info_to_howto (abfd
, cache_ptr
, dst
)
350 bfd
*abfd ATTRIBUTE_UNUSED
;
352 Elf_Internal_Rela
*dst
;
354 unsigned int r_type
= ELF32_R_TYPE(dst
->r_info
);
357 case R_390_GNU_VTINHERIT
:
358 cache_ptr
->howto
= &elf32_s390_vtinherit_howto
;
361 case R_390_GNU_VTENTRY
:
362 cache_ptr
->howto
= &elf32_s390_vtentry_howto
;
366 if (r_type
>= sizeof (elf_howto_table
) / sizeof (elf_howto_table
[0]))
368 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
372 cache_ptr
->howto
= &elf_howto_table
[r_type
];
376 /* A relocation function which doesn't do anything. */
377 static bfd_reloc_status_type
378 s390_tls_reloc (abfd
, reloc_entry
, symbol
, data
, input_section
,
379 output_bfd
, error_message
)
380 bfd
*abfd ATTRIBUTE_UNUSED
;
381 arelent
*reloc_entry
;
382 asymbol
*symbol ATTRIBUTE_UNUSED
;
383 PTR data ATTRIBUTE_UNUSED
;
384 asection
*input_section
;
386 char **error_message ATTRIBUTE_UNUSED
;
389 reloc_entry
->address
+= input_section
->output_offset
;
393 /* Handle the large displacement relocs. */
394 static bfd_reloc_status_type
395 s390_elf_ldisp_reloc (abfd
, reloc_entry
, symbol
, data
, input_section
,
396 output_bfd
, error_message
)
397 bfd
*abfd ATTRIBUTE_UNUSED
;
398 arelent
*reloc_entry
;
400 PTR data ATTRIBUTE_UNUSED
;
401 asection
*input_section
;
403 char **error_message ATTRIBUTE_UNUSED
;
405 reloc_howto_type
*howto
= reloc_entry
->howto
;
409 if (output_bfd
!= (bfd
*) NULL
410 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
411 && (! howto
->partial_inplace
412 || reloc_entry
->addend
== 0))
414 reloc_entry
->address
+= input_section
->output_offset
;
418 if (output_bfd
!= NULL
)
419 return bfd_reloc_continue
;
421 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
422 return bfd_reloc_outofrange
;
424 relocation
= (symbol
->value
425 + symbol
->section
->output_section
->vma
426 + symbol
->section
->output_offset
);
427 relocation
+= reloc_entry
->addend
;
428 if (howto
->pc_relative
)
430 relocation
-= (input_section
->output_section
->vma
431 + input_section
->output_offset
);
432 relocation
-= reloc_entry
->address
;
435 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ reloc_entry
->address
);
436 insn
|= (relocation
& 0xfff) << 16 | (relocation
& 0xff000) >> 4;
437 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ reloc_entry
->address
);
439 if ((bfd_signed_vma
) relocation
< - 0x80000
440 || (bfd_signed_vma
) relocation
> 0x7ffff)
441 return bfd_reloc_overflow
;
447 elf_s390_is_local_label_name (abfd
, name
)
451 if (name
[0] == '.' && (name
[1] == 'X' || name
[1] == 'L'))
454 return _bfd_elf_is_local_label_name (abfd
, name
);
457 /* Functions for the 390 ELF linker. */
459 /* The name of the dynamic interpreter. This is put in the .interp
462 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
464 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
465 copying dynamic variables from a shared lib into an app's dynbss
466 section, and instead use a dynamic relocation to point into the
468 #define ELIMINATE_COPY_RELOCS 1
470 /* The size in bytes of the first entry in the procedure linkage table. */
471 #define PLT_FIRST_ENTRY_SIZE 32
472 /* The size in bytes of an entry in the procedure linkage table. */
473 #define PLT_ENTRY_SIZE 32
475 #define GOT_ENTRY_SIZE 4
477 /* The first three entries in a procedure linkage table are reserved,
478 and the initial contents are unimportant (we zero them out).
479 Subsequent entries look like this. See the SVR4 ABI 386
480 supplement to see how this works. */
482 /* For the s390, simple addr offset can only be 0 - 4096.
483 To use the full 2 GB address space, several instructions
484 are needed to load an address in a register and execute
485 a branch( or just saving the address)
487 Furthermore, only r 0 and 1 are free to use!!! */
489 /* The first 3 words in the GOT are then reserved.
490 Word 0 is the address of the dynamic table.
491 Word 1 is a pointer to a structure describing the object
492 Word 2 is used to point to the loader entry address.
494 The code for position independent PLT entries looks like this:
496 r12 holds addr of the current GOT at entry to the PLT
498 The GOT holds the address in the PLT to be executed.
499 The loader then gets:
500 24(15) = Pointer to the structure describing the object.
501 28(15) = Offset in symbol table
503 The loader must then find the module where the function is
504 and insert the address in the GOT.
506 Note: 390 can only address +- 64 K relative.
507 We check if offset > 65536, then make a relative branch -64xxx
508 back to a previous defined branch
510 PLT1: BASR 1,0 # 2 bytes
511 L 1,22(1) # 4 bytes Load offset in GOT in r 1
512 L 1,(1,12) # 4 bytes Load address from GOT in r1
513 BCR 15,1 # 2 bytes Jump to address
514 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
515 L 1,14(1) # 4 bytes Load offset in symol table in r1
516 BRC 15,-x # 4 bytes Jump to start of PLT
517 .word 0 # 2 bytes filler
518 .long ? # 4 bytes offset in GOT
519 .long ? # 4 bytes offset into symbol table
521 This was the general case. There are two additional, optimizes PLT
522 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
523 First the one for GOT offsets < 4096:
525 PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
526 BCR 15,1 # 2 bytes Jump to address
527 .word 0,0,0 # 6 bytes filler
528 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
529 L 1,14(1) # 4 bytes Load offset in symbol table in r1
530 BRC 15,-x # 4 bytes Jump to start of PLT
531 .word 0,0,0 # 6 bytes filler
532 .long ? # 4 bytes offset into symbol table
534 Second the one for GOT offsets < 32768:
536 PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
537 L 1,(1,12) # 4 bytes Load address from GOT to r1
538 BCR 15,1 # 2 bytes Jump to address
539 .word 0 # 2 bytes filler
540 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
541 L 1,14(1) # 4 bytes Load offset in symbol table in r1
542 BRC 15,-x # 4 bytes Jump to start of PLT
543 .word 0,0,0 # 6 bytes filler
544 .long ? # 4 bytes offset into symbol table
546 Total = 32 bytes per PLT entry
548 The code for static build PLT entries looks like this:
550 PLT1: BASR 1,0 # 2 bytes
551 L 1,22(1) # 4 bytes Load address of GOT entry
552 L 1,0(0,1) # 4 bytes Load address from GOT in r1
553 BCR 15,1 # 2 bytes Jump to address
554 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
555 L 1,14(1) # 4 bytes Load offset in symbol table in r1
556 BRC 15,-x # 4 bytes Jump to start of PLT
557 .word 0 # 2 bytes filler
558 .long ? # 4 bytes address of GOT entry
559 .long ? # 4 bytes offset into symbol table */
561 #define PLT_PIC_ENTRY_WORD0 0x0d105810
562 #define PLT_PIC_ENTRY_WORD1 0x10165811
563 #define PLT_PIC_ENTRY_WORD2 0xc00007f1
564 #define PLT_PIC_ENTRY_WORD3 0x0d105810
565 #define PLT_PIC_ENTRY_WORD4 0x100ea7f4
567 #define PLT_PIC12_ENTRY_WORD0 0x5810c000
568 #define PLT_PIC12_ENTRY_WORD1 0x07f10000
569 #define PLT_PIC12_ENTRY_WORD2 0x00000000
570 #define PLT_PIC12_ENTRY_WORD3 0x0d105810
571 #define PLT_PIC12_ENTRY_WORD4 0x100ea7f4
573 #define PLT_PIC16_ENTRY_WORD0 0xa7180000
574 #define PLT_PIC16_ENTRY_WORD1 0x5811c000
575 #define PLT_PIC16_ENTRY_WORD2 0x07f10000
576 #define PLT_PIC16_ENTRY_WORD3 0x0d105810
577 #define PLT_PIC16_ENTRY_WORD4 0x100ea7f4
579 #define PLT_ENTRY_WORD0 0x0d105810
580 #define PLT_ENTRY_WORD1 0x10165810
581 #define PLT_ENTRY_WORD2 0x100007f1
582 #define PLT_ENTRY_WORD3 0x0d105810
583 #define PLT_ENTRY_WORD4 0x100ea7f4
585 /* The first PLT entry pushes the offset into the symbol table
586 from R1 onto the stack at 8(15) and the loader object info
587 at 12(15), loads the loader address in R1 and jumps to it. */
589 /* The first entry in the PLT for PIC code:
592 ST 1,28(15) # R1 has offset into symbol table
593 L 1,4(12) # Get loader ino(object struct address)
594 ST 1,24(15) # Store address
595 L 1,8(12) # Entry address of loader in R1
596 BR 1 # Jump to loader
598 The first entry in the PLT for static code:
601 ST 1,28(15) # R1 has offset into symbol table
603 L 1,18(0,1) # Get address of GOT
604 MVC 24(4,15),4(1) # Move loader ino to stack
605 L 1,8(1) # Get address of loader
606 BR 1 # Jump to loader
608 .long got # address of GOT */
610 #define PLT_PIC_FIRST_ENTRY_WORD0 0x5010f01c
611 #define PLT_PIC_FIRST_ENTRY_WORD1 0x5810c004
612 #define PLT_PIC_FIRST_ENTRY_WORD2 0x5010f018
613 #define PLT_PIC_FIRST_ENTRY_WORD3 0x5810c008
614 #define PLT_PIC_FIRST_ENTRY_WORD4 0x07f10000
616 #define PLT_FIRST_ENTRY_WORD0 0x5010f01c
617 #define PLT_FIRST_ENTRY_WORD1 0x0d105810
618 #define PLT_FIRST_ENTRY_WORD2 0x1012D203
619 #define PLT_FIRST_ENTRY_WORD3 0xf0181004
620 #define PLT_FIRST_ENTRY_WORD4 0x58101008
621 #define PLT_FIRST_ENTRY_WORD5 0x07f10000
623 /* The s390 linker needs to keep track of the number of relocs that it
624 decides to copy as dynamic relocs in check_relocs for each symbol.
625 This is so that it can later discard them if they are found to be
626 unnecessary. We store the information in a field extending the
627 regular ELF linker hash table. */
629 struct elf_s390_dyn_relocs
631 struct elf_s390_dyn_relocs
*next
;
633 /* The input section of the reloc. */
636 /* Total number of relocs copied for the input section. */
639 /* Number of pc-relative relocs copied for the input section. */
640 bfd_size_type pc_count
;
643 /* s390 ELF linker hash entry. */
645 struct elf_s390_link_hash_entry
647 struct elf_link_hash_entry elf
;
649 /* Track dynamic relocs copied for this symbol. */
650 struct elf_s390_dyn_relocs
*dyn_relocs
;
652 /* Number of GOTPLT references for a function. */
653 bfd_signed_vma gotplt_refcount
;
655 #define GOT_UNKNOWN 0
659 #define GOT_TLS_IE_NLT 4
660 unsigned char tls_type
;
663 #define elf_s390_hash_entry(ent) \
664 ((struct elf_s390_link_hash_entry *)(ent))
666 struct elf_s390_obj_tdata
668 struct elf_obj_tdata root
;
670 /* tls_type for each local got entry. */
671 char *local_got_tls_type
;
674 #define elf_s390_tdata(abfd) \
675 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
677 #define elf_s390_local_got_tls_type(abfd) \
678 (elf_s390_tdata (abfd)->local_got_tls_type)
681 elf_s390_mkobject (abfd
)
684 bfd_size_type amt
= sizeof (struct elf_s390_obj_tdata
);
685 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
686 if (abfd
->tdata
.any
== NULL
)
692 elf_s390_object_p (abfd
)
695 /* Set the right machine number for an s390 elf32 file. */
696 return bfd_default_set_arch_mach (abfd
, bfd_arch_s390
, bfd_mach_s390_31
);
699 /* s390 ELF linker hash table. */
701 struct elf_s390_link_hash_table
703 struct elf_link_hash_table elf
;
705 /* Short-cuts to get to dynamic linker sections. */
715 bfd_signed_vma refcount
;
719 /* Small local sym to section mapping cache. */
720 struct sym_sec_cache sym_sec
;
723 /* Get the s390 ELF linker hash table from a link_info structure. */
725 #define elf_s390_hash_table(p) \
726 ((struct elf_s390_link_hash_table *) ((p)->hash))
728 /* Create an entry in an s390 ELF linker hash table. */
730 static struct bfd_hash_entry
*
731 link_hash_newfunc (entry
, table
, string
)
732 struct bfd_hash_entry
*entry
;
733 struct bfd_hash_table
*table
;
736 /* Allocate the structure if it has not already been allocated by a
740 entry
= bfd_hash_allocate (table
,
741 sizeof (struct elf_s390_link_hash_entry
));
746 /* Call the allocation method of the superclass. */
747 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
750 struct elf_s390_link_hash_entry
*eh
;
752 eh
= (struct elf_s390_link_hash_entry
*) entry
;
753 eh
->dyn_relocs
= NULL
;
754 eh
->gotplt_refcount
= 0;
755 eh
->tls_type
= GOT_UNKNOWN
;
761 /* Create an s390 ELF linker hash table. */
763 static struct bfd_link_hash_table
*
764 elf_s390_link_hash_table_create (abfd
)
767 struct elf_s390_link_hash_table
*ret
;
768 bfd_size_type amt
= sizeof (struct elf_s390_link_hash_table
);
770 ret
= (struct elf_s390_link_hash_table
*) bfd_malloc (amt
);
774 if (! _bfd_elf_link_hash_table_init (&ret
->elf
, abfd
, link_hash_newfunc
))
787 ret
->tls_ldm_got
.refcount
= 0;
788 ret
->sym_sec
.abfd
= NULL
;
790 return &ret
->elf
.root
;
793 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
794 shortcuts to them in our hash table. */
797 create_got_section (dynobj
, info
)
799 struct bfd_link_info
*info
;
801 struct elf_s390_link_hash_table
*htab
;
803 if (! _bfd_elf_create_got_section (dynobj
, info
))
806 htab
= elf_s390_hash_table (info
);
807 htab
->sgot
= bfd_get_section_by_name (dynobj
, ".got");
808 htab
->sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
809 if (!htab
->sgot
|| !htab
->sgotplt
)
812 htab
->srelgot
= bfd_make_section_with_flags (dynobj
, ".rela.got",
813 (SEC_ALLOC
| SEC_LOAD
818 if (htab
->srelgot
== NULL
819 || ! bfd_set_section_alignment (dynobj
, htab
->srelgot
, 2))
824 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
825 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
829 elf_s390_create_dynamic_sections (dynobj
, info
)
831 struct bfd_link_info
*info
;
833 struct elf_s390_link_hash_table
*htab
;
835 htab
= elf_s390_hash_table (info
);
836 if (!htab
->sgot
&& !create_got_section (dynobj
, info
))
839 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
842 htab
->splt
= bfd_get_section_by_name (dynobj
, ".plt");
843 htab
->srelplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
844 htab
->sdynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
846 htab
->srelbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
848 if (!htab
->splt
|| !htab
->srelplt
|| !htab
->sdynbss
849 || (!info
->shared
&& !htab
->srelbss
))
855 /* Copy the extra info we tack onto an elf_link_hash_entry. */
858 elf_s390_copy_indirect_symbol (bed
, dir
, ind
)
859 const struct elf_backend_data
*bed
;
860 struct elf_link_hash_entry
*dir
, *ind
;
862 struct elf_s390_link_hash_entry
*edir
, *eind
;
864 edir
= (struct elf_s390_link_hash_entry
*) dir
;
865 eind
= (struct elf_s390_link_hash_entry
*) ind
;
867 if (eind
->dyn_relocs
!= NULL
)
869 if (edir
->dyn_relocs
!= NULL
)
871 struct elf_s390_dyn_relocs
**pp
;
872 struct elf_s390_dyn_relocs
*p
;
874 if (ind
->root
.type
== bfd_link_hash_indirect
)
877 /* Add reloc counts against the weak sym to the strong sym
878 list. Merge any entries against the same section. */
879 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
881 struct elf_s390_dyn_relocs
*q
;
883 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
884 if (q
->sec
== p
->sec
)
886 q
->pc_count
+= p
->pc_count
;
887 q
->count
+= p
->count
;
894 *pp
= edir
->dyn_relocs
;
897 edir
->dyn_relocs
= eind
->dyn_relocs
;
898 eind
->dyn_relocs
= NULL
;
901 if (ind
->root
.type
== bfd_link_hash_indirect
902 && dir
->got
.refcount
<= 0)
904 edir
->tls_type
= eind
->tls_type
;
905 eind
->tls_type
= GOT_UNKNOWN
;
908 if (ELIMINATE_COPY_RELOCS
909 && ind
->root
.type
!= bfd_link_hash_indirect
910 && dir
->dynamic_adjusted
)
912 /* If called to transfer flags for a weakdef during processing
913 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
914 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
915 dir
->ref_dynamic
|= ind
->ref_dynamic
;
916 dir
->ref_regular
|= ind
->ref_regular
;
917 dir
->ref_regular_nonweak
|= ind
->ref_regular_nonweak
;
918 dir
->needs_plt
|= ind
->needs_plt
;
921 _bfd_elf_link_hash_copy_indirect (bed
, dir
, ind
);
925 elf_s390_tls_transition (info
, r_type
, is_local
)
926 struct bfd_link_info
*info
;
938 return R_390_TLS_LE32
;
939 return R_390_TLS_IE32
;
940 case R_390_TLS_GOTIE32
:
942 return R_390_TLS_LE32
;
943 return R_390_TLS_GOTIE32
;
944 case R_390_TLS_LDM32
:
945 return R_390_TLS_LE32
;
951 /* Look through the relocs for a section during the first phase, and
952 allocate space in the global offset table or procedure linkage
956 elf_s390_check_relocs (abfd
, info
, sec
, relocs
)
958 struct bfd_link_info
*info
;
960 const Elf_Internal_Rela
*relocs
;
962 struct elf_s390_link_hash_table
*htab
;
963 Elf_Internal_Shdr
*symtab_hdr
;
964 struct elf_link_hash_entry
**sym_hashes
;
965 const Elf_Internal_Rela
*rel
;
966 const Elf_Internal_Rela
*rel_end
;
968 bfd_signed_vma
*local_got_refcounts
;
969 int tls_type
, old_tls_type
;
971 if (info
->relocatable
)
974 htab
= elf_s390_hash_table (info
);
975 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
976 sym_hashes
= elf_sym_hashes (abfd
);
977 local_got_refcounts
= elf_local_got_refcounts (abfd
);
981 rel_end
= relocs
+ sec
->reloc_count
;
982 for (rel
= relocs
; rel
< rel_end
; rel
++)
985 unsigned long r_symndx
;
986 struct elf_link_hash_entry
*h
;
988 r_symndx
= ELF32_R_SYM (rel
->r_info
);
990 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
992 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"),
997 if (r_symndx
< symtab_hdr
->sh_info
)
1001 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1002 while (h
->root
.type
== bfd_link_hash_indirect
1003 || h
->root
.type
== bfd_link_hash_warning
)
1004 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1007 /* Create got section and local_got_refcounts array if they
1009 r_type
= elf_s390_tls_transition (info
,
1010 ELF32_R_TYPE (rel
->r_info
),
1019 case R_390_GOTPLT12
:
1020 case R_390_GOTPLT16
:
1021 case R_390_GOTPLT20
:
1022 case R_390_GOTPLT32
:
1023 case R_390_GOTPLTENT
:
1024 case R_390_TLS_GD32
:
1025 case R_390_TLS_GOTIE12
:
1026 case R_390_TLS_GOTIE20
:
1027 case R_390_TLS_GOTIE32
:
1028 case R_390_TLS_IEENT
:
1029 case R_390_TLS_IE32
:
1030 case R_390_TLS_LDM32
:
1032 && local_got_refcounts
== NULL
)
1036 size
= symtab_hdr
->sh_info
;
1037 size
*= (sizeof (bfd_signed_vma
) + sizeof(char));
1038 local_got_refcounts
= ((bfd_signed_vma
*)
1039 bfd_zalloc (abfd
, size
));
1040 if (local_got_refcounts
== NULL
)
1042 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1043 elf_s390_local_got_tls_type (abfd
)
1044 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
1047 case R_390_GOTOFF16
:
1048 case R_390_GOTOFF32
:
1050 case R_390_GOTPCDBL
:
1051 if (htab
->sgot
== NULL
)
1053 if (htab
->elf
.dynobj
== NULL
)
1054 htab
->elf
.dynobj
= abfd
;
1055 if (!create_got_section (htab
->elf
.dynobj
, info
))
1062 case R_390_GOTOFF16
:
1063 case R_390_GOTOFF32
:
1065 case R_390_GOTPCDBL
:
1066 /* Got is created, nothing to be done. */
1069 case R_390_PLT16DBL
:
1070 case R_390_PLT32DBL
:
1072 case R_390_PLTOFF16
:
1073 case R_390_PLTOFF32
:
1074 /* This symbol requires a procedure linkage table entry. We
1075 actually build the entry in adjust_dynamic_symbol,
1076 because this might be a case of linking PIC code which is
1077 never referenced by a dynamic object, in which case we
1078 don't need to generate a procedure linkage table entry
1081 /* If this is a local symbol, we resolve it directly without
1082 creating a procedure linkage table entry. */
1086 h
->plt
.refcount
+= 1;
1090 case R_390_GOTPLT12
:
1091 case R_390_GOTPLT16
:
1092 case R_390_GOTPLT20
:
1093 case R_390_GOTPLT32
:
1094 case R_390_GOTPLTENT
:
1095 /* This symbol requires either a procedure linkage table entry
1096 or an entry in the local got. We actually build the entry
1097 in adjust_dynamic_symbol because whether this is really a
1098 global reference can change and with it the fact if we have
1099 to create a plt entry or a local got entry. To be able to
1100 make a once global symbol a local one we have to keep track
1101 of the number of gotplt references that exist for this
1105 ((struct elf_s390_link_hash_entry
*) h
)->gotplt_refcount
++;
1107 h
->plt
.refcount
+= 1;
1110 local_got_refcounts
[r_symndx
] += 1;
1113 case R_390_TLS_LDM32
:
1114 htab
->tls_ldm_got
.refcount
+= 1;
1117 case R_390_TLS_IE32
:
1118 case R_390_TLS_GOTIE12
:
1119 case R_390_TLS_GOTIE20
:
1120 case R_390_TLS_GOTIE32
:
1121 case R_390_TLS_IEENT
:
1123 info
->flags
|= DF_STATIC_TLS
;
1131 case R_390_TLS_GD32
:
1132 /* This symbol requires a global offset table entry. */
1141 tls_type
= GOT_NORMAL
;
1143 case R_390_TLS_GD32
:
1144 tls_type
= GOT_TLS_GD
;
1146 case R_390_TLS_IE32
:
1147 case R_390_TLS_GOTIE32
:
1148 tls_type
= GOT_TLS_IE
;
1150 case R_390_TLS_GOTIE12
:
1151 case R_390_TLS_GOTIE20
:
1152 case R_390_TLS_IEENT
:
1153 tls_type
= GOT_TLS_IE_NLT
;
1159 h
->got
.refcount
+= 1;
1160 old_tls_type
= elf_s390_hash_entry(h
)->tls_type
;
1164 local_got_refcounts
[r_symndx
] += 1;
1165 old_tls_type
= elf_s390_local_got_tls_type (abfd
) [r_symndx
];
1167 /* If a TLS symbol is accessed using IE at least once,
1168 there is no point to use dynamic model for it. */
1169 if (old_tls_type
!= tls_type
&& old_tls_type
!= GOT_UNKNOWN
)
1171 if (old_tls_type
== GOT_NORMAL
|| tls_type
== GOT_NORMAL
)
1173 (*_bfd_error_handler
)
1174 (_("%B: `%s' accessed both as normal and thread local symbol"),
1175 abfd
, h
->root
.root
.string
);
1178 if (old_tls_type
> tls_type
)
1179 tls_type
= old_tls_type
;
1182 if (old_tls_type
!= tls_type
)
1185 elf_s390_hash_entry (h
)->tls_type
= tls_type
;
1187 elf_s390_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
1190 if (r_type
!= R_390_TLS_IE32
)
1194 case R_390_TLS_LE32
:
1197 info
->flags
|= DF_STATIC_TLS
;
1207 if (h
!= NULL
&& !info
->shared
)
1209 /* If this reloc is in a read-only section, we might
1210 need a copy reloc. We can't check reliably at this
1211 stage whether the section is read-only, as input
1212 sections have not yet been mapped to output sections.
1213 Tentatively set the flag for now, and correct in
1214 adjust_dynamic_symbol. */
1217 /* We may need a .plt entry if the function this reloc
1218 refers to is in a shared lib. */
1219 h
->plt
.refcount
+= 1;
1222 /* If we are creating a shared library, and this is a reloc
1223 against a global symbol, or a non PC relative reloc
1224 against a local symbol, then we need to copy the reloc
1225 into the shared library. However, if we are linking with
1226 -Bsymbolic, we do not need to copy a reloc against a
1227 global symbol which is defined in an object we are
1228 including in the link (i.e., DEF_REGULAR is set). At
1229 this point we have not seen all the input files, so it is
1230 possible that DEF_REGULAR is not set now but will be set
1231 later (it is never cleared). In case of a weak definition,
1232 DEF_REGULAR may be cleared later by a strong definition in
1233 a shared library. We account for that possibility below by
1234 storing information in the relocs_copied field of the hash
1235 table entry. A similar situation occurs when creating
1236 shared libraries and symbol visibility changes render the
1239 If on the other hand, we are creating an executable, we
1240 may need to keep relocations for symbols satisfied by a
1241 dynamic library if we manage to avoid copy relocs for the
1244 && (sec
->flags
& SEC_ALLOC
) != 0
1245 && ((ELF32_R_TYPE (rel
->r_info
) != R_390_PC16
1246 && ELF32_R_TYPE (rel
->r_info
) != R_390_PC16DBL
1247 && ELF32_R_TYPE (rel
->r_info
) != R_390_PC32DBL
1248 && ELF32_R_TYPE (rel
->r_info
) != R_390_PC32
)
1250 && (! info
->symbolic
1251 || h
->root
.type
== bfd_link_hash_defweak
1252 || !h
->def_regular
))))
1253 || (ELIMINATE_COPY_RELOCS
1255 && (sec
->flags
& SEC_ALLOC
) != 0
1257 && (h
->root
.type
== bfd_link_hash_defweak
1258 || !h
->def_regular
)))
1260 struct elf_s390_dyn_relocs
*p
;
1261 struct elf_s390_dyn_relocs
**head
;
1263 /* We must copy these reloc types into the output file.
1264 Create a reloc section in dynobj and make room for
1271 name
= (bfd_elf_string_from_elf_section
1273 elf_elfheader (abfd
)->e_shstrndx
,
1274 elf_section_data (sec
)->rel_hdr
.sh_name
));
1278 if (strncmp (name
, ".rela", 5) != 0
1279 || strcmp (bfd_get_section_name (abfd
, sec
),
1282 (*_bfd_error_handler
)
1283 (_("%B: bad relocation section name `%s\'"),
1287 if (htab
->elf
.dynobj
== NULL
)
1288 htab
->elf
.dynobj
= abfd
;
1290 dynobj
= htab
->elf
.dynobj
;
1291 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1296 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
1297 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
1298 if ((sec
->flags
& SEC_ALLOC
) != 0)
1299 flags
|= SEC_ALLOC
| SEC_LOAD
;
1300 sreloc
= bfd_make_section_with_flags (dynobj
,
1304 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
1307 elf_section_data (sec
)->sreloc
= sreloc
;
1310 /* If this is a global symbol, we count the number of
1311 relocations we need for this symbol. */
1314 head
= &((struct elf_s390_link_hash_entry
*) h
)->dyn_relocs
;
1318 /* Track dynamic relocs needed for local syms too.
1319 We really need local syms available to do this
1323 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
1328 head
= ((struct elf_s390_dyn_relocs
**)
1329 &elf_section_data (s
)->local_dynrel
);
1333 if (p
== NULL
|| p
->sec
!= sec
)
1335 bfd_size_type amt
= sizeof *p
;
1337 p
= ((struct elf_s390_dyn_relocs
*)
1338 bfd_alloc (htab
->elf
.dynobj
, amt
));
1349 if (ELF32_R_TYPE (rel
->r_info
) == R_390_PC16
1350 || ELF32_R_TYPE (rel
->r_info
) == R_390_PC16DBL
1351 || ELF32_R_TYPE (rel
->r_info
) == R_390_PC32DBL
1352 || ELF32_R_TYPE (rel
->r_info
) == R_390_PC32
)
1357 /* This relocation describes the C++ object vtable hierarchy.
1358 Reconstruct it for later use during GC. */
1359 case R_390_GNU_VTINHERIT
:
1360 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1364 /* This relocation describes which C++ vtable entries are actually
1365 used. Record for later use during GC. */
1366 case R_390_GNU_VTENTRY
:
1367 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1379 /* Return the section that should be marked against GC for a given
1383 elf_s390_gc_mark_hook (sec
, info
, rel
, h
, sym
)
1385 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1386 Elf_Internal_Rela
*rel
;
1387 struct elf_link_hash_entry
*h
;
1388 Elf_Internal_Sym
*sym
;
1392 switch (ELF32_R_TYPE (rel
->r_info
))
1394 case R_390_GNU_VTINHERIT
:
1395 case R_390_GNU_VTENTRY
:
1399 switch (h
->root
.type
)
1401 case bfd_link_hash_defined
:
1402 case bfd_link_hash_defweak
:
1403 return h
->root
.u
.def
.section
;
1405 case bfd_link_hash_common
:
1406 return h
->root
.u
.c
.p
->section
;
1414 return bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
1419 /* Update the got entry reference counts for the section being removed. */
1422 elf_s390_gc_sweep_hook (abfd
, info
, sec
, relocs
)
1424 struct bfd_link_info
*info
;
1426 const Elf_Internal_Rela
*relocs
;
1428 Elf_Internal_Shdr
*symtab_hdr
;
1429 struct elf_link_hash_entry
**sym_hashes
;
1430 bfd_signed_vma
*local_got_refcounts
;
1431 const Elf_Internal_Rela
*rel
, *relend
;
1433 elf_section_data (sec
)->local_dynrel
= NULL
;
1435 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1436 sym_hashes
= elf_sym_hashes (abfd
);
1437 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1439 relend
= relocs
+ sec
->reloc_count
;
1440 for (rel
= relocs
; rel
< relend
; rel
++)
1442 unsigned long r_symndx
;
1443 unsigned int r_type
;
1444 struct elf_link_hash_entry
*h
= NULL
;
1446 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1447 if (r_symndx
>= symtab_hdr
->sh_info
)
1449 struct elf_s390_link_hash_entry
*eh
;
1450 struct elf_s390_dyn_relocs
**pp
;
1451 struct elf_s390_dyn_relocs
*p
;
1453 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1454 while (h
->root
.type
== bfd_link_hash_indirect
1455 || h
->root
.type
== bfd_link_hash_warning
)
1456 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1457 eh
= (struct elf_s390_link_hash_entry
*) h
;
1459 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
1462 /* Everything must go for SEC. */
1468 r_type
= ELF32_R_TYPE (rel
->r_info
);
1469 r_type
= elf_s390_tls_transition (info
, r_type
, h
!= NULL
);
1472 case R_390_TLS_LDM32
:
1473 if (elf_s390_hash_table (info
)->tls_ldm_got
.refcount
> 0)
1474 elf_s390_hash_table (info
)->tls_ldm_got
.refcount
-= 1;
1477 case R_390_TLS_GD32
:
1478 case R_390_TLS_IE32
:
1479 case R_390_TLS_GOTIE12
:
1480 case R_390_TLS_GOTIE20
:
1481 case R_390_TLS_GOTIE32
:
1482 case R_390_TLS_IEENT
:
1487 case R_390_GOTOFF16
:
1488 case R_390_GOTOFF32
:
1490 case R_390_GOTPCDBL
:
1494 if (h
->got
.refcount
> 0)
1495 h
->got
.refcount
-= 1;
1497 else if (local_got_refcounts
!= NULL
)
1499 if (local_got_refcounts
[r_symndx
] > 0)
1500 local_got_refcounts
[r_symndx
] -= 1;
1517 case R_390_PLT16DBL
:
1518 case R_390_PLT32DBL
:
1520 case R_390_PLTOFF16
:
1521 case R_390_PLTOFF32
:
1524 if (h
->plt
.refcount
> 0)
1525 h
->plt
.refcount
-= 1;
1529 case R_390_GOTPLT12
:
1530 case R_390_GOTPLT16
:
1531 case R_390_GOTPLT20
:
1532 case R_390_GOTPLT32
:
1533 case R_390_GOTPLTENT
:
1536 if (h
->plt
.refcount
> 0)
1538 ((struct elf_s390_link_hash_entry
*) h
)->gotplt_refcount
--;
1539 h
->plt
.refcount
-= 1;
1542 else if (local_got_refcounts
!= NULL
)
1544 if (local_got_refcounts
[r_symndx
] > 0)
1545 local_got_refcounts
[r_symndx
] -= 1;
1557 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1558 entry but we found we will not create any. Called when we find we will
1559 not have any PLT for this symbol, by for example
1560 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1561 or elf_s390_size_dynamic_sections if no dynamic sections will be
1562 created (we're only linking static objects). */
1565 elf_s390_adjust_gotplt (h
)
1566 struct elf_s390_link_hash_entry
*h
;
1568 if (h
->elf
.root
.type
== bfd_link_hash_warning
)
1569 h
= (struct elf_s390_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
1571 if (h
->gotplt_refcount
<= 0)
1574 /* We simply add the number of gotplt references to the number
1575 * of got references for this symbol. */
1576 h
->elf
.got
.refcount
+= h
->gotplt_refcount
;
1577 h
->gotplt_refcount
= -1;
1580 /* Adjust a symbol defined by a dynamic object and referenced by a
1581 regular object. The current definition is in some section of the
1582 dynamic object, but we're not including those sections. We have to
1583 change the definition to something the rest of the link can
1587 elf_s390_adjust_dynamic_symbol (info
, h
)
1588 struct bfd_link_info
*info
;
1589 struct elf_link_hash_entry
*h
;
1591 struct elf_s390_link_hash_table
*htab
;
1593 unsigned int power_of_two
;
1595 /* If this is a function, put it in the procedure linkage table. We
1596 will fill in the contents of the procedure linkage table later
1597 (although we could actually do it here). */
1598 if (h
->type
== STT_FUNC
1601 if (h
->plt
.refcount
<= 0
1605 && h
->root
.type
!= bfd_link_hash_undefweak
1606 && h
->root
.type
!= bfd_link_hash_undefined
))
1608 /* This case can occur if we saw a PLT32 reloc in an input
1609 file, but the symbol was never referred to by a dynamic
1610 object, or if all references were garbage collected. In
1611 such a case, we don't actually need to build a procedure
1612 linkage table, and we can just do a PC32 reloc instead. */
1613 h
->plt
.offset
= (bfd_vma
) -1;
1615 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1621 /* It's possible that we incorrectly decided a .plt reloc was
1622 needed for an R_390_PC32 reloc to a non-function sym in
1623 check_relocs. We can't decide accurately between function and
1624 non-function syms in check-relocs; Objects loaded later in
1625 the link may change h->type. So fix it now. */
1626 h
->plt
.offset
= (bfd_vma
) -1;
1628 /* If this is a weak symbol, and there is a real definition, the
1629 processor independent code will have arranged for us to see the
1630 real definition first, and we can just use the same value. */
1631 if (h
->u
.weakdef
!= NULL
)
1633 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
1634 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
1635 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
1636 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
1637 if (ELIMINATE_COPY_RELOCS
|| info
->nocopyreloc
)
1638 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
1642 /* This is a reference to a symbol defined by a dynamic object which
1643 is not a function. */
1645 /* If we are creating a shared library, we must presume that the
1646 only references to the symbol are via the global offset table.
1647 For such cases we need not do anything here; the relocations will
1648 be handled correctly by relocate_section. */
1652 /* If there are no references to this symbol that do not use the
1653 GOT, we don't need to generate a copy reloc. */
1654 if (!h
->non_got_ref
)
1657 /* If -z nocopyreloc was given, we won't generate them either. */
1658 if (info
->nocopyreloc
)
1664 if (ELIMINATE_COPY_RELOCS
)
1666 struct elf_s390_link_hash_entry
* eh
;
1667 struct elf_s390_dyn_relocs
*p
;
1669 eh
= (struct elf_s390_link_hash_entry
*) h
;
1670 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1672 s
= p
->sec
->output_section
;
1673 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1677 /* If we didn't find any dynamic relocs in read-only sections, then
1678 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1686 /* We must allocate the symbol in our .dynbss section, which will
1687 become part of the .bss section of the executable. There will be
1688 an entry for this symbol in the .dynsym section. The dynamic
1689 object will contain position independent code, so all references
1690 from the dynamic object to this symbol will go through the global
1691 offset table. The dynamic linker will use the .dynsym entry to
1692 determine the address it must put in the global offset table, so
1693 both the dynamic object and the regular object will refer to the
1694 same memory location for the variable. */
1696 htab
= elf_s390_hash_table (info
);
1698 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1699 copy the initial value out of the dynamic object and into the
1700 runtime process image. */
1701 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
1703 htab
->srelbss
->size
+= sizeof (Elf32_External_Rela
);
1707 /* We need to figure out the alignment required for this symbol. I
1708 have no idea how ELF linkers handle this. */
1709 power_of_two
= bfd_log2 (h
->size
);
1710 if (power_of_two
> 3)
1713 /* Apply the required alignment. */
1715 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
1716 if (power_of_two
> bfd_get_section_alignment (htab
->elf
.dynobj
, s
))
1718 if (! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, power_of_two
))
1722 /* Define the symbol as being at this point in the section. */
1723 h
->root
.u
.def
.section
= s
;
1724 h
->root
.u
.def
.value
= s
->size
;
1726 /* Increment the section size to make room for the symbol. */
1732 /* Allocate space in .plt, .got and associated reloc sections for
1736 allocate_dynrelocs (h
, inf
)
1737 struct elf_link_hash_entry
*h
;
1740 struct bfd_link_info
*info
;
1741 struct elf_s390_link_hash_table
*htab
;
1742 struct elf_s390_link_hash_entry
*eh
;
1743 struct elf_s390_dyn_relocs
*p
;
1745 if (h
->root
.type
== bfd_link_hash_indirect
)
1748 if (h
->root
.type
== bfd_link_hash_warning
)
1749 /* When warning symbols are created, they **replace** the "real"
1750 entry in the hash table, thus we never get to see the real
1751 symbol in a hash traversal. So look at it now. */
1752 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1754 info
= (struct bfd_link_info
*) inf
;
1755 htab
= elf_s390_hash_table (info
);
1757 if (htab
->elf
.dynamic_sections_created
1758 && h
->plt
.refcount
> 0
1759 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
1760 || h
->root
.type
!= bfd_link_hash_undefweak
))
1762 /* Make sure this symbol is output as a dynamic symbol.
1763 Undefined weak syms won't yet be marked as dynamic. */
1764 if (h
->dynindx
== -1
1765 && !h
->forced_local
)
1767 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1772 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
1774 asection
*s
= htab
->splt
;
1776 /* If this is the first .plt entry, make room for the special
1779 s
->size
+= PLT_FIRST_ENTRY_SIZE
;
1781 h
->plt
.offset
= s
->size
;
1783 /* If this symbol is not defined in a regular file, and we are
1784 not generating a shared library, then set the symbol to this
1785 location in the .plt. This is required to make function
1786 pointers compare as equal between the normal executable and
1787 the shared library. */
1791 h
->root
.u
.def
.section
= s
;
1792 h
->root
.u
.def
.value
= h
->plt
.offset
;
1795 /* Make room for this entry. */
1796 s
->size
+= PLT_ENTRY_SIZE
;
1798 /* We also need to make an entry in the .got.plt section, which
1799 will be placed in the .got section by the linker script. */
1800 htab
->sgotplt
->size
+= GOT_ENTRY_SIZE
;
1802 /* We also need to make an entry in the .rela.plt section. */
1803 htab
->srelplt
->size
+= sizeof (Elf32_External_Rela
);
1807 h
->plt
.offset
= (bfd_vma
) -1;
1809 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1814 h
->plt
.offset
= (bfd_vma
) -1;
1816 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1819 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1820 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1821 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1822 we can save the dynamic TLS relocation. */
1823 if (h
->got
.refcount
> 0
1826 && elf_s390_hash_entry(h
)->tls_type
>= GOT_TLS_IE
)
1828 if (elf_s390_hash_entry(h
)->tls_type
== GOT_TLS_IE_NLT
)
1829 /* For the GOTIE access without a literal pool entry the offset has
1830 to be stored somewhere. The immediate value in the instruction
1831 is not bit enough so the value is stored in the got. */
1833 h
->got
.offset
= htab
->sgot
->size
;
1834 htab
->sgot
->size
+= GOT_ENTRY_SIZE
;
1837 h
->got
.offset
= (bfd_vma
) -1;
1839 else if (h
->got
.refcount
> 0)
1843 int tls_type
= elf_s390_hash_entry(h
)->tls_type
;
1845 /* Make sure this symbol is output as a dynamic symbol.
1846 Undefined weak syms won't yet be marked as dynamic. */
1847 if (h
->dynindx
== -1
1848 && !h
->forced_local
)
1850 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1855 h
->got
.offset
= s
->size
;
1856 s
->size
+= GOT_ENTRY_SIZE
;
1857 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1858 if (tls_type
== GOT_TLS_GD
)
1859 s
->size
+= GOT_ENTRY_SIZE
;
1860 dyn
= htab
->elf
.dynamic_sections_created
;
1861 /* R_390_TLS_IE32 needs one dynamic relocation,
1862 R_390_TLS_GD32 needs one if local symbol and two if global. */
1863 if ((tls_type
== GOT_TLS_GD
&& h
->dynindx
== -1)
1864 || tls_type
>= GOT_TLS_IE
)
1865 htab
->srelgot
->size
+= sizeof (Elf32_External_Rela
);
1866 else if (tls_type
== GOT_TLS_GD
)
1867 htab
->srelgot
->size
+= 2 * sizeof (Elf32_External_Rela
);
1868 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
1869 || h
->root
.type
!= bfd_link_hash_undefweak
)
1871 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
1872 htab
->srelgot
->size
+= sizeof (Elf32_External_Rela
);
1875 h
->got
.offset
= (bfd_vma
) -1;
1877 eh
= (struct elf_s390_link_hash_entry
*) h
;
1878 if (eh
->dyn_relocs
== NULL
)
1881 /* In the shared -Bsymbolic case, discard space allocated for
1882 dynamic pc-relative relocs against symbols which turn out to be
1883 defined in regular objects. For the normal shared case, discard
1884 space for pc-relative relocs that have become local due to symbol
1885 visibility changes. */
1889 if (SYMBOL_REFERENCES_LOCAL (info
, h
))
1891 struct elf_s390_dyn_relocs
**pp
;
1893 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
1895 p
->count
-= p
->pc_count
;
1904 /* Also discard relocs on undefined weak syms with non-default
1906 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
1907 && h
->root
.type
== bfd_link_hash_undefweak
)
1908 eh
->dyn_relocs
= NULL
;
1910 else if (ELIMINATE_COPY_RELOCS
)
1912 /* For the non-shared case, discard space for relocs against
1913 symbols which turn out to need copy relocs or are not
1919 || (htab
->elf
.dynamic_sections_created
1920 && (h
->root
.type
== bfd_link_hash_undefweak
1921 || h
->root
.type
== bfd_link_hash_undefined
))))
1923 /* Make sure this symbol is output as a dynamic symbol.
1924 Undefined weak syms won't yet be marked as dynamic. */
1925 if (h
->dynindx
== -1
1926 && !h
->forced_local
)
1928 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1932 /* If that succeeded, we know we'll be keeping all the
1934 if (h
->dynindx
!= -1)
1938 eh
->dyn_relocs
= NULL
;
1943 /* Finally, allocate space. */
1944 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1946 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
1948 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
1954 /* Find any dynamic relocs that apply to read-only sections. */
1957 readonly_dynrelocs (h
, inf
)
1958 struct elf_link_hash_entry
*h
;
1961 struct elf_s390_link_hash_entry
*eh
;
1962 struct elf_s390_dyn_relocs
*p
;
1964 if (h
->root
.type
== bfd_link_hash_warning
)
1965 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1967 eh
= (struct elf_s390_link_hash_entry
*) h
;
1968 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1970 asection
*s
= p
->sec
->output_section
;
1972 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1974 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
1976 info
->flags
|= DF_TEXTREL
;
1978 /* Not an error, just cut short the traversal. */
1985 /* Set the sizes of the dynamic sections. */
1988 elf_s390_size_dynamic_sections (output_bfd
, info
)
1989 bfd
*output_bfd ATTRIBUTE_UNUSED
;
1990 struct bfd_link_info
*info
;
1992 struct elf_s390_link_hash_table
*htab
;
1998 htab
= elf_s390_hash_table (info
);
1999 dynobj
= htab
->elf
.dynobj
;
2003 if (htab
->elf
.dynamic_sections_created
)
2005 /* Set the contents of the .interp section to the interpreter. */
2006 if (info
->executable
)
2008 s
= bfd_get_section_by_name (dynobj
, ".interp");
2011 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2012 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2016 /* Set up .got offsets for local syms, and space for local dynamic
2018 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
2020 bfd_signed_vma
*local_got
;
2021 bfd_signed_vma
*end_local_got
;
2022 char *local_tls_type
;
2023 bfd_size_type locsymcount
;
2024 Elf_Internal_Shdr
*symtab_hdr
;
2027 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
2030 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2032 struct elf_s390_dyn_relocs
*p
;
2034 for (p
= *((struct elf_s390_dyn_relocs
**)
2035 &elf_section_data (s
)->local_dynrel
);
2039 if (!bfd_is_abs_section (p
->sec
)
2040 && bfd_is_abs_section (p
->sec
->output_section
))
2042 /* Input section has been discarded, either because
2043 it is a copy of a linkonce section or due to
2044 linker script /DISCARD/, so we'll be discarding
2047 else if (p
->count
!= 0)
2049 srela
= elf_section_data (p
->sec
)->sreloc
;
2050 srela
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2051 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2052 info
->flags
|= DF_TEXTREL
;
2057 local_got
= elf_local_got_refcounts (ibfd
);
2061 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2062 locsymcount
= symtab_hdr
->sh_info
;
2063 end_local_got
= local_got
+ locsymcount
;
2064 local_tls_type
= elf_s390_local_got_tls_type (ibfd
);
2066 srela
= htab
->srelgot
;
2067 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
2071 *local_got
= s
->size
;
2072 s
->size
+= GOT_ENTRY_SIZE
;
2073 if (*local_tls_type
== GOT_TLS_GD
)
2074 s
->size
+= GOT_ENTRY_SIZE
;
2076 srela
->size
+= sizeof (Elf32_External_Rela
);
2079 *local_got
= (bfd_vma
) -1;
2083 if (htab
->tls_ldm_got
.refcount
> 0)
2085 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2087 htab
->tls_ldm_got
.offset
= htab
->sgot
->size
;
2088 htab
->sgot
->size
+= 2 * GOT_ENTRY_SIZE
;
2089 htab
->srelgot
->size
+= sizeof (Elf32_External_Rela
);
2092 htab
->tls_ldm_got
.offset
= -1;
2094 /* Allocate global sym .plt and .got entries, and space for global
2095 sym dynamic relocs. */
2096 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, (PTR
) info
);
2098 /* We now have determined the sizes of the various dynamic sections.
2099 Allocate memory for them. */
2101 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2103 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2108 || s
== htab
->sgotplt
)
2110 /* Strip this section if we don't need it; see the
2113 else if (strncmp (bfd_get_section_name (dynobj
, s
), ".rela", 5) == 0)
2118 /* We use the reloc_count field as a counter if we need
2119 to copy relocs into the output file. */
2124 /* It's not one of our sections, so don't allocate space. */
2130 /* If we don't need this section, strip it from the
2131 output file. This is to handle .rela.bss and
2132 .rela.plt. We must create it in
2133 create_dynamic_sections, because it must be created
2134 before the linker maps input sections to output
2135 sections. The linker does that before
2136 adjust_dynamic_symbol is called, and it is that
2137 function which decides whether anything needs to go
2138 into these sections. */
2140 s
->flags
|= SEC_EXCLUDE
;
2144 /* Allocate memory for the section contents. We use bfd_zalloc
2145 here in case unused entries are not reclaimed before the
2146 section's contents are written out. This should not happen,
2147 but this way if it does, we get a R_390_NONE reloc instead
2149 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
2150 if (s
->contents
== NULL
)
2154 if (htab
->elf
.dynamic_sections_created
)
2156 /* Add some entries to the .dynamic section. We fill in the
2157 values later, in elf_s390_finish_dynamic_sections, but we
2158 must add the entries now so that we get the correct size for
2159 the .dynamic section. The DT_DEBUG entry is filled in by the
2160 dynamic linker and used by the debugger. */
2161 #define add_dynamic_entry(TAG, VAL) \
2162 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2164 if (info
->executable
)
2166 if (!add_dynamic_entry (DT_DEBUG
, 0))
2170 if (htab
->splt
->size
!= 0)
2172 if (!add_dynamic_entry (DT_PLTGOT
, 0)
2173 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
2174 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2175 || !add_dynamic_entry (DT_JMPREL
, 0))
2181 if (!add_dynamic_entry (DT_RELA
, 0)
2182 || !add_dynamic_entry (DT_RELASZ
, 0)
2183 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
2186 /* If any dynamic relocs apply to a read-only section,
2187 then we need a DT_TEXTREL entry. */
2188 if ((info
->flags
& DF_TEXTREL
) == 0)
2189 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
,
2192 if ((info
->flags
& DF_TEXTREL
) != 0)
2194 if (!add_dynamic_entry (DT_TEXTREL
, 0))
2199 #undef add_dynamic_entry
2204 /* Return the base VMA address which should be subtracted from real addresses
2205 when resolving @dtpoff relocation.
2206 This is PT_TLS segment p_vaddr. */
2210 struct bfd_link_info
*info
;
2212 /* If tls_sec is NULL, we should have signalled an error already. */
2213 if (elf_hash_table (info
)->tls_sec
== NULL
)
2215 return elf_hash_table (info
)->tls_sec
->vma
;
2218 /* Return the relocation value for @tpoff relocation
2219 if STT_TLS virtual address is ADDRESS. */
2222 tpoff (info
, address
)
2223 struct bfd_link_info
*info
;
2226 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
2228 /* If tls_sec is NULL, we should have signalled an error already. */
2229 if (htab
->tls_sec
== NULL
)
2231 return htab
->tls_size
+ htab
->tls_sec
->vma
- address
;
2234 /* Complain if TLS instruction relocation is against an invalid
2238 invalid_tls_insn (input_bfd
, input_section
, rel
)
2240 asection
*input_section
;
2241 Elf_Internal_Rela
*rel
;
2243 reloc_howto_type
*howto
;
2245 howto
= elf_howto_table
+ ELF32_R_TYPE (rel
->r_info
);
2246 (*_bfd_error_handler
)
2247 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2250 (long) rel
->r_offset
,
2254 /* Relocate a 390 ELF section. */
2257 elf_s390_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
2258 contents
, relocs
, local_syms
, local_sections
)
2260 struct bfd_link_info
*info
;
2262 asection
*input_section
;
2264 Elf_Internal_Rela
*relocs
;
2265 Elf_Internal_Sym
*local_syms
;
2266 asection
**local_sections
;
2268 struct elf_s390_link_hash_table
*htab
;
2269 Elf_Internal_Shdr
*symtab_hdr
;
2270 struct elf_link_hash_entry
**sym_hashes
;
2271 bfd_vma
*local_got_offsets
;
2272 Elf_Internal_Rela
*rel
;
2273 Elf_Internal_Rela
*relend
;
2275 if (info
->relocatable
)
2278 htab
= elf_s390_hash_table (info
);
2279 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2280 sym_hashes
= elf_sym_hashes (input_bfd
);
2281 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2284 relend
= relocs
+ input_section
->reloc_count
;
2285 for (; rel
< relend
; rel
++)
2287 unsigned int r_type
;
2288 reloc_howto_type
*howto
;
2289 unsigned long r_symndx
;
2290 struct elf_link_hash_entry
*h
;
2291 Elf_Internal_Sym
*sym
;
2295 bfd_boolean unresolved_reloc
;
2296 bfd_reloc_status_type r
;
2299 r_type
= ELF32_R_TYPE (rel
->r_info
);
2300 if (r_type
== (int) R_390_GNU_VTINHERIT
2301 || r_type
== (int) R_390_GNU_VTENTRY
)
2303 if (r_type
>= (int) R_390_max
)
2305 bfd_set_error (bfd_error_bad_value
);
2309 howto
= elf_howto_table
+ r_type
;
2310 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2312 /* This is a final link. */
2316 unresolved_reloc
= FALSE
;
2317 if (r_symndx
< symtab_hdr
->sh_info
)
2319 sym
= local_syms
+ r_symndx
;
2320 sec
= local_sections
[r_symndx
];
2321 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2325 bfd_boolean warned ATTRIBUTE_UNUSED
;
2327 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2328 r_symndx
, symtab_hdr
, sym_hashes
,
2330 unresolved_reloc
, warned
);
2335 case R_390_GOTPLT12
:
2336 case R_390_GOTPLT16
:
2337 case R_390_GOTPLT20
:
2338 case R_390_GOTPLT32
:
2339 case R_390_GOTPLTENT
:
2340 /* There are three cases for a GOTPLT relocation. 1) The
2341 relocation is against the jump slot entry of a plt that
2342 will get emitted to the output file. 2) The relocation
2343 is against the jump slot of a plt entry that has been
2344 removed. elf_s390_adjust_gotplt has created a GOT entry
2345 as replacement. 3) The relocation is against a local symbol.
2346 Cases 2) and 3) are the same as the GOT relocation code
2347 so we just have to test for case 1 and fall through for
2349 if (h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
2354 Current offset - size first entry / entry size. */
2355 plt_index
= (h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
) /
2358 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
2360 relocation
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
2361 unresolved_reloc
= FALSE
;
2363 if (r_type
== R_390_GOTPLTENT
)
2364 relocation
+= htab
->sgot
->output_section
->vma
;
2374 /* Relocation is to the entry for this symbol in the global
2376 if (htab
->sgot
== NULL
)
2383 off
= h
->got
.offset
;
2384 dyn
= htab
->elf
.dynamic_sections_created
;
2385 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
2391 || (ELF_ST_VISIBILITY (h
->other
)
2392 && h
->root
.type
== bfd_link_hash_undefweak
))
2394 /* This is actually a static link, or it is a
2395 -Bsymbolic link and the symbol is defined
2396 locally, or the symbol was forced to be local
2397 because of a version file. We must initialize
2398 this entry in the global offset table. Since the
2399 offset must always be a multiple of 2, we use the
2400 least significant bit to record whether we have
2401 initialized it already.
2403 When doing a dynamic link, we create a .rel.got
2404 relocation entry to initialize the value. This
2405 is done in the finish_dynamic_symbol routine. */
2410 bfd_put_32 (output_bfd
, relocation
,
2411 htab
->sgot
->contents
+ off
);
2416 unresolved_reloc
= FALSE
;
2420 if (local_got_offsets
== NULL
)
2423 off
= local_got_offsets
[r_symndx
];
2425 /* The offset must always be a multiple of 4. We use
2426 the least significant bit to record whether we have
2427 already generated the necessary reloc. */
2432 bfd_put_32 (output_bfd
, relocation
,
2433 htab
->sgot
->contents
+ off
);
2438 Elf_Internal_Rela outrel
;
2441 srelgot
= htab
->srelgot
;
2442 if (srelgot
== NULL
)
2445 outrel
.r_offset
= (htab
->sgot
->output_section
->vma
2446 + htab
->sgot
->output_offset
2448 outrel
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
2449 outrel
.r_addend
= relocation
;
2450 loc
= srelgot
->contents
;
2451 loc
+= srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
2452 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
2455 local_got_offsets
[r_symndx
] |= 1;
2459 if (off
>= (bfd_vma
) -2)
2462 relocation
= htab
->sgot
->output_offset
+ off
;
2464 /* For @GOTENT the relocation is against the offset between
2465 the instruction and the symbols entry in the GOT and not
2466 between the start of the GOT and the symbols entry. We
2467 add the vma of the GOT to get the correct value. */
2468 if ( r_type
== R_390_GOTENT
2469 || r_type
== R_390_GOTPLTENT
)
2470 relocation
+= htab
->sgot
->output_section
->vma
;
2474 case R_390_GOTOFF16
:
2475 case R_390_GOTOFF32
:
2476 /* Relocation is relative to the start of the global offset
2479 /* Note that sgot->output_offset is not involved in this
2480 calculation. We always want the start of .got. If we
2481 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2482 permitted by the ABI, we might have to change this
2484 relocation
-= htab
->sgot
->output_section
->vma
;
2488 case R_390_GOTPCDBL
:
2489 /* Use global offset table as symbol value. */
2490 relocation
= htab
->sgot
->output_section
->vma
;
2491 unresolved_reloc
= FALSE
;
2494 case R_390_PLT16DBL
:
2495 case R_390_PLT32DBL
:
2497 /* Relocation is to the entry for this symbol in the
2498 procedure linkage table. */
2500 /* Resolve a PLT32 reloc against a local symbol directly,
2501 without using the procedure linkage table. */
2505 if (h
->plt
.offset
== (bfd_vma
) -1
2506 || htab
->splt
== NULL
)
2508 /* We didn't make a PLT entry for this symbol. This
2509 happens when statically linking PIC code, or when
2510 using -Bsymbolic. */
2514 relocation
= (htab
->splt
->output_section
->vma
2515 + htab
->splt
->output_offset
2517 unresolved_reloc
= FALSE
;
2520 case R_390_PLTOFF16
:
2521 case R_390_PLTOFF32
:
2522 /* Relocation is to the entry for this symbol in the
2523 procedure linkage table relative to the start of the GOT. */
2525 /* For local symbols or if we didn't make a PLT entry for
2526 this symbol resolve the symbol directly. */
2528 || h
->plt
.offset
== (bfd_vma
) -1
2529 || htab
->splt
== NULL
)
2531 relocation
-= htab
->sgot
->output_section
->vma
;
2535 relocation
= (htab
->splt
->output_section
->vma
2536 + htab
->splt
->output_offset
2538 - htab
->sgot
->output_section
->vma
);
2539 unresolved_reloc
= FALSE
;
2549 /* r_symndx will be zero only for relocs against symbols
2550 from removed linkonce sections, or sections discarded by
2553 || (input_section
->flags
& SEC_ALLOC
) == 0)
2558 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2559 || h
->root
.type
!= bfd_link_hash_undefweak
)
2560 && ((r_type
!= R_390_PC16
2561 && r_type
!= R_390_PC16DBL
2562 && r_type
!= R_390_PC32DBL
2563 && r_type
!= R_390_PC32
)
2565 && !SYMBOL_REFERENCES_LOCAL (info
, h
))))
2566 || (ELIMINATE_COPY_RELOCS
2573 || h
->root
.type
== bfd_link_hash_undefweak
2574 || h
->root
.type
== bfd_link_hash_undefined
)))
2576 Elf_Internal_Rela outrel
;
2577 bfd_boolean skip
, relocate
;
2581 /* When generating a shared object, these relocations
2582 are copied into the output file to be resolved at run
2589 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2591 if (outrel
.r_offset
== (bfd_vma
) -1)
2593 else if (outrel
.r_offset
== (bfd_vma
) -2)
2594 skip
= TRUE
, relocate
= TRUE
;
2595 outrel
.r_offset
+= (input_section
->output_section
->vma
2596 + input_section
->output_offset
);
2599 memset (&outrel
, 0, sizeof outrel
);
2602 && (r_type
== R_390_PC16
2603 || r_type
== R_390_PC16DBL
2604 || r_type
== R_390_PC32DBL
2605 || r_type
== R_390_PC32
2608 || !h
->def_regular
))
2610 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2611 outrel
.r_addend
= rel
->r_addend
;
2615 /* This symbol is local, or marked to become local. */
2616 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2617 if (r_type
== R_390_32
)
2620 outrel
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
2626 if (bfd_is_abs_section (sec
))
2628 else if (sec
== NULL
|| sec
->owner
== NULL
)
2630 bfd_set_error(bfd_error_bad_value
);
2637 osec
= sec
->output_section
;
2638 sindx
= elf_section_data (osec
)->dynindx
;
2639 BFD_ASSERT (sindx
> 0);
2641 /* We are turning this relocation into one
2642 against a section symbol, so subtract out
2643 the output section's address but not the
2644 offset of the input section in the output
2647 outrel
.r_addend
-= osec
->vma
;
2649 outrel
.r_info
= ELF32_R_INFO (sindx
, r_type
);
2653 sreloc
= elf_section_data (input_section
)->sreloc
;
2657 loc
= sreloc
->contents
;
2658 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
2659 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
2661 /* If this reloc is against an external symbol, we do
2662 not want to fiddle with the addend. Otherwise, we
2663 need to include the symbol value so that it becomes
2664 an addend for the dynamic reloc. */
2670 /* Relocations for tls literal pool entries. */
2671 case R_390_TLS_IE32
:
2674 Elf_Internal_Rela outrel
;
2678 outrel
.r_offset
= rel
->r_offset
2679 + input_section
->output_section
->vma
2680 + input_section
->output_offset
;
2681 outrel
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
2682 sreloc
= elf_section_data (input_section
)->sreloc
;
2685 loc
= sreloc
->contents
;
2686 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
2687 bfd_elf32_swap_reloc_out (output_bfd
, &outrel
, loc
);
2691 case R_390_TLS_GD32
:
2692 case R_390_TLS_GOTIE32
:
2693 r_type
= elf_s390_tls_transition (info
, r_type
, h
== NULL
);
2694 tls_type
= GOT_UNKNOWN
;
2695 if (h
== NULL
&& local_got_offsets
)
2696 tls_type
= elf_s390_local_got_tls_type (input_bfd
) [r_symndx
];
2699 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2700 if (!info
->shared
&& h
->dynindx
== -1 && tls_type
>= GOT_TLS_IE
)
2701 r_type
= R_390_TLS_LE32
;
2703 if (r_type
== R_390_TLS_GD32
&& tls_type
>= GOT_TLS_IE
)
2704 r_type
= R_390_TLS_IE32
;
2706 if (r_type
== R_390_TLS_LE32
)
2708 /* This relocation gets optimized away by the local exec
2709 access optimization. */
2710 BFD_ASSERT (! unresolved_reloc
);
2711 bfd_put_32 (output_bfd
, -tpoff (info
, relocation
),
2712 contents
+ rel
->r_offset
);
2716 if (htab
->sgot
== NULL
)
2720 off
= h
->got
.offset
;
2723 if (local_got_offsets
== NULL
)
2726 off
= local_got_offsets
[r_symndx
];
2735 Elf_Internal_Rela outrel
;
2739 if (htab
->srelgot
== NULL
)
2742 outrel
.r_offset
= (htab
->sgot
->output_section
->vma
2743 + htab
->sgot
->output_offset
+ off
);
2745 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
2746 if (r_type
== R_390_TLS_GD32
)
2747 dr_type
= R_390_TLS_DTPMOD
;
2749 dr_type
= R_390_TLS_TPOFF
;
2750 if (dr_type
== R_390_TLS_TPOFF
&& indx
== 0)
2751 outrel
.r_addend
= relocation
- dtpoff_base (info
);
2753 outrel
.r_addend
= 0;
2754 outrel
.r_info
= ELF32_R_INFO (indx
, dr_type
);
2755 loc
= htab
->srelgot
->contents
;
2756 loc
+= htab
->srelgot
->reloc_count
++
2757 * sizeof (Elf32_External_Rela
);
2758 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
2760 if (r_type
== R_390_TLS_GD32
)
2764 BFD_ASSERT (! unresolved_reloc
);
2765 bfd_put_32 (output_bfd
,
2766 relocation
- dtpoff_base (info
),
2767 htab
->sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
2771 outrel
.r_info
= ELF32_R_INFO (indx
, R_390_TLS_DTPOFF
);
2772 outrel
.r_offset
+= GOT_ENTRY_SIZE
;
2773 outrel
.r_addend
= 0;
2774 htab
->srelgot
->reloc_count
++;
2775 loc
+= sizeof (Elf32_External_Rela
);
2776 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
2783 local_got_offsets
[r_symndx
] |= 1;
2786 if (off
>= (bfd_vma
) -2)
2788 if (r_type
== ELF32_R_TYPE (rel
->r_info
))
2790 relocation
= htab
->sgot
->output_offset
+ off
;
2791 if (r_type
== R_390_TLS_IE32
|| r_type
== R_390_TLS_IEENT
)
2792 relocation
+= htab
->sgot
->output_section
->vma
;
2793 unresolved_reloc
= FALSE
;
2797 bfd_put_32 (output_bfd
, htab
->sgot
->output_offset
+ off
,
2798 contents
+ rel
->r_offset
);
2803 case R_390_TLS_GOTIE12
:
2804 case R_390_TLS_GOTIE20
:
2805 case R_390_TLS_IEENT
:
2808 if (local_got_offsets
== NULL
)
2810 off
= local_got_offsets
[r_symndx
];
2812 goto emit_tls_relocs
;
2816 off
= h
->got
.offset
;
2817 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2818 if (info
->shared
|| h
->dynindx
!= -1 || tls_type
< GOT_TLS_IE
)
2819 goto emit_tls_relocs
;
2822 if (htab
->sgot
== NULL
)
2825 BFD_ASSERT (! unresolved_reloc
);
2826 bfd_put_32 (output_bfd
, -tpoff (info
, relocation
),
2827 htab
->sgot
->contents
+ off
);
2828 relocation
= htab
->sgot
->output_offset
+ off
;
2829 if (r_type
== R_390_TLS_IEENT
)
2830 relocation
+= htab
->sgot
->output_section
->vma
;
2831 unresolved_reloc
= FALSE
;
2834 case R_390_TLS_LDM32
:
2836 /* The literal pool entry this relocation refers to gets ignored
2837 by the optimized code of the local exec model. Do nothing
2838 and the value will turn out zero. */
2841 if (htab
->sgot
== NULL
)
2844 off
= htab
->tls_ldm_got
.offset
;
2849 Elf_Internal_Rela outrel
;
2852 if (htab
->srelgot
== NULL
)
2855 outrel
.r_offset
= (htab
->sgot
->output_section
->vma
2856 + htab
->sgot
->output_offset
+ off
);
2858 bfd_put_32 (output_bfd
, 0,
2859 htab
->sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
2860 outrel
.r_info
= ELF32_R_INFO (0, R_390_TLS_DTPMOD
);
2861 outrel
.r_addend
= 0;
2862 loc
= htab
->srelgot
->contents
;
2863 loc
+= htab
->srelgot
->reloc_count
++
2864 * sizeof (Elf32_External_Rela
);
2865 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
2866 htab
->tls_ldm_got
.offset
|= 1;
2868 relocation
= htab
->sgot
->output_offset
+ off
;
2869 unresolved_reloc
= FALSE
;
2872 case R_390_TLS_LE32
:
2875 /* Linking a shared library with non-fpic code requires
2876 a R_390_TLS_TPOFF relocation. */
2877 Elf_Internal_Rela outrel
;
2882 outrel
.r_offset
= rel
->r_offset
2883 + input_section
->output_section
->vma
2884 + input_section
->output_offset
;
2885 if (h
!= NULL
&& h
->dynindx
!= -1)
2889 outrel
.r_info
= ELF32_R_INFO (indx
, R_390_TLS_TPOFF
);
2891 outrel
.r_addend
= relocation
- dtpoff_base (info
);
2893 outrel
.r_addend
= 0;
2894 sreloc
= elf_section_data (input_section
)->sreloc
;
2897 loc
= sreloc
->contents
;
2898 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
2899 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
2903 BFD_ASSERT (! unresolved_reloc
);
2904 bfd_put_32 (output_bfd
, -tpoff (info
, relocation
),
2905 contents
+ rel
->r_offset
);
2909 case R_390_TLS_LDO32
:
2910 if (info
->shared
|| (input_section
->flags
& SEC_CODE
) == 0)
2911 relocation
-= dtpoff_base (info
);
2913 /* When converting LDO to LE, we must negate. */
2914 relocation
= -tpoff (info
, relocation
);
2917 /* Relocations for tls instructions. */
2918 case R_390_TLS_LOAD
:
2919 case R_390_TLS_GDCALL
:
2920 case R_390_TLS_LDCALL
:
2921 tls_type
= GOT_UNKNOWN
;
2922 if (h
== NULL
&& local_got_offsets
)
2923 tls_type
= elf_s390_local_got_tls_type (input_bfd
) [r_symndx
];
2925 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2927 if (tls_type
== GOT_TLS_GD
)
2930 if (r_type
== R_390_TLS_LOAD
)
2932 if (!info
->shared
&& (h
== NULL
|| h
->dynindx
== -1))
2934 /* IE->LE transition. Four valid cases:
2935 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
2936 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
2937 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
2938 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2939 unsigned int insn
, ry
;
2941 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2943 if ((insn
& 0xff00f000) == 0x58000000)
2944 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
2945 ry
= (insn
& 0x000f0000);
2946 else if ((insn
& 0xff0f0000) == 0x58000000)
2947 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
2948 ry
= (insn
& 0x0000f000) << 4;
2949 else if ((insn
& 0xff00f000) == 0x5800c000)
2950 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
2951 ry
= (insn
& 0x000f0000);
2952 else if ((insn
& 0xff0f0000) == 0x580c0000)
2953 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2954 ry
= (insn
& 0x0000f000) << 4;
2956 invalid_tls_insn (input_bfd
, input_section
, rel
);
2957 insn
= 0x18000700 | (insn
& 0x00f00000) | ry
;
2958 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
2961 else if (r_type
== R_390_TLS_GDCALL
)
2965 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2966 if ((insn
& 0xff000fff) != 0x4d000000)
2967 invalid_tls_insn (input_bfd
, input_section
, rel
);
2968 if (!info
->shared
&& (h
== NULL
|| h
->dynindx
== -1))
2969 /* GD->LE transition.
2970 bas %r14,0(%rx,%r13) -> bc 0,0 */
2973 /* GD->IE transition.
2974 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
2976 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
2978 else if (r_type
== R_390_TLS_LDCALL
)
2984 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2985 if ((insn
& 0xff000fff) != 0x4d000000)
2986 invalid_tls_insn (input_bfd
, input_section
, rel
);
2987 /* LD->LE transition.
2988 bas %r14,0(%rx,%r13) -> bc 0,0 */
2990 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
2999 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3000 because such sections are not SEC_ALLOC and thus ld.so will
3001 not process them. */
3002 if (unresolved_reloc
3003 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
3005 (*_bfd_error_handler
)
3006 (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"),
3009 (long) rel
->r_offset
,
3010 h
->root
.root
.string
);
3012 if (r_type
== R_390_20
3013 || r_type
== R_390_GOT20
3014 || r_type
== R_390_GOTPLT20
3015 || r_type
== R_390_TLS_GOTIE20
)
3017 relocation
+= rel
->r_addend
;
3018 relocation
= (relocation
&0xfff) << 8 | (relocation
&0xff000) >> 12;
3019 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3020 contents
, rel
->r_offset
,
3024 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3025 contents
, rel
->r_offset
,
3026 relocation
, rel
->r_addend
);
3028 if (r
!= bfd_reloc_ok
)
3033 name
= h
->root
.root
.string
;
3036 name
= bfd_elf_string_from_elf_section (input_bfd
,
3037 symtab_hdr
->sh_link
,
3042 name
= bfd_section_name (input_bfd
, sec
);
3045 if (r
== bfd_reloc_overflow
)
3048 if (! ((*info
->callbacks
->reloc_overflow
)
3049 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
3050 (bfd_vma
) 0, input_bfd
, input_section
,
3056 (*_bfd_error_handler
)
3057 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3058 input_bfd
, input_section
,
3059 (long) rel
->r_offset
, name
, (int) r
);
3068 /* Finish up dynamic symbol handling. We set the contents of various
3069 dynamic sections here. */
3072 elf_s390_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
3074 struct bfd_link_info
*info
;
3075 struct elf_link_hash_entry
*h
;
3076 Elf_Internal_Sym
*sym
;
3078 struct elf_s390_link_hash_table
*htab
;
3080 htab
= elf_s390_hash_table (info
);
3082 if (h
->plt
.offset
!= (bfd_vma
) -1)
3086 Elf_Internal_Rela rela
;
3088 bfd_vma relative_offset
;
3090 /* This symbol has an entry in the procedure linkage table. Set
3092 if (h
->dynindx
== -1
3093 || htab
->splt
== NULL
3094 || htab
->sgotplt
== NULL
3095 || htab
->srelplt
== NULL
)
3099 Current offset - size first entry / entry size. */
3100 plt_index
= (h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
) / PLT_ENTRY_SIZE
;
3102 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3104 got_offset
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
3106 /* S390 uses halfwords for relative branch calc! */
3107 relative_offset
= - ((PLT_FIRST_ENTRY_SIZE
+
3108 (PLT_ENTRY_SIZE
* plt_index
) + 18) / 2);
3109 /* If offset is > 32768, branch to a previous branch
3110 390 can only handle +-64 K jumps. */
3111 if ( -32768 > (int) relative_offset
)
3113 = -(unsigned) (((65536 / PLT_ENTRY_SIZE
- 1) * PLT_ENTRY_SIZE
) / 2);
3115 /* Fill in the entry in the procedure linkage table. */
3118 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD0
,
3119 htab
->splt
->contents
+ h
->plt
.offset
);
3120 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD1
,
3121 htab
->splt
->contents
+ h
->plt
.offset
+ 4);
3122 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD2
,
3123 htab
->splt
->contents
+ h
->plt
.offset
+ 8);
3124 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD3
,
3125 htab
->splt
->contents
+ h
->plt
.offset
+ 12);
3126 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD4
,
3127 htab
->splt
->contents
+ h
->plt
.offset
+ 16);
3128 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3129 htab
->splt
->contents
+ h
->plt
.offset
+ 20);
3130 bfd_put_32 (output_bfd
,
3131 (htab
->sgotplt
->output_section
->vma
3132 + htab
->sgotplt
->output_offset
3134 htab
->splt
->contents
+ h
->plt
.offset
+ 24);
3136 else if (got_offset
< 4096)
3138 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC12_ENTRY_WORD0
+ got_offset
,
3139 htab
->splt
->contents
+ h
->plt
.offset
);
3140 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC12_ENTRY_WORD1
,
3141 htab
->splt
->contents
+ h
->plt
.offset
+ 4);
3142 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC12_ENTRY_WORD2
,
3143 htab
->splt
->contents
+ h
->plt
.offset
+ 8);
3144 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC12_ENTRY_WORD3
,
3145 htab
->splt
->contents
+ h
->plt
.offset
+ 12);
3146 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC12_ENTRY_WORD4
,
3147 htab
->splt
->contents
+ h
->plt
.offset
+ 16);
3148 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3149 htab
->splt
->contents
+ h
->plt
.offset
+ 20);
3150 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
3151 htab
->splt
->contents
+ h
->plt
.offset
+ 24);
3153 else if (got_offset
< 32768)
3155 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC16_ENTRY_WORD0
+ got_offset
,
3156 htab
->splt
->contents
+ h
->plt
.offset
);
3157 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC16_ENTRY_WORD1
,
3158 htab
->splt
->contents
+ h
->plt
.offset
+ 4);
3159 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC16_ENTRY_WORD2
,
3160 htab
->splt
->contents
+ h
->plt
.offset
+ 8);
3161 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC16_ENTRY_WORD3
,
3162 htab
->splt
->contents
+ h
->plt
.offset
+ 12);
3163 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC16_ENTRY_WORD4
,
3164 htab
->splt
->contents
+ h
->plt
.offset
+ 16);
3165 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3166 htab
->splt
->contents
+ h
->plt
.offset
+ 20);
3167 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
3168 htab
->splt
->contents
+ h
->plt
.offset
+ 24);
3172 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD0
,
3173 htab
->splt
->contents
+ h
->plt
.offset
);
3174 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD1
,
3175 htab
->splt
->contents
+ h
->plt
.offset
+ 4);
3176 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD2
,
3177 htab
->splt
->contents
+ h
->plt
.offset
+ 8);
3178 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD3
,
3179 htab
->splt
->contents
+ h
->plt
.offset
+ 12);
3180 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD4
,
3181 htab
->splt
->contents
+ h
->plt
.offset
+ 16);
3182 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3183 htab
->splt
->contents
+ h
->plt
.offset
+ 20);
3184 bfd_put_32 (output_bfd
, got_offset
,
3185 htab
->splt
->contents
+ h
->plt
.offset
+ 24);
3187 /* Insert offset into reloc. table here. */
3188 bfd_put_32 (output_bfd
, plt_index
* sizeof (Elf32_External_Rela
),
3189 htab
->splt
->contents
+ h
->plt
.offset
+ 28);
3191 /* Fill in the entry in the global offset table.
3192 Points to instruction after GOT offset. */
3193 bfd_put_32 (output_bfd
,
3194 (htab
->splt
->output_section
->vma
3195 + htab
->splt
->output_offset
3198 htab
->sgotplt
->contents
+ got_offset
);
3200 /* Fill in the entry in the .rela.plt section. */
3201 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
3202 + htab
->sgotplt
->output_offset
3204 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_JMP_SLOT
);
3206 loc
= htab
->srelplt
->contents
+ plt_index
* sizeof (Elf32_External_Rela
);
3207 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3209 if (!h
->def_regular
)
3211 /* Mark the symbol as undefined, rather than as defined in
3212 the .plt section. Leave the value alone. This is a clue
3213 for the dynamic linker, to make function pointer
3214 comparisons work between an application and shared
3216 sym
->st_shndx
= SHN_UNDEF
;
3220 if (h
->got
.offset
!= (bfd_vma
) -1
3221 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_GD
3222 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_IE
3223 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_IE_NLT
)
3225 Elf_Internal_Rela rela
;
3228 /* This symbol has an entry in the global offset table. Set it
3231 if (htab
->sgot
== NULL
|| htab
->srelgot
== NULL
)
3234 rela
.r_offset
= (htab
->sgot
->output_section
->vma
3235 + htab
->sgot
->output_offset
3236 + (h
->got
.offset
&~ (bfd_vma
) 1));
3238 /* If this is a static link, or it is a -Bsymbolic link and the
3239 symbol is defined locally or was forced to be local because
3240 of a version file, we just want to emit a RELATIVE reloc.
3241 The entry in the global offset table will already have been
3242 initialized in the relocate_section function. */
3249 BFD_ASSERT((h
->got
.offset
& 1) != 0);
3250 rela
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
3251 rela
.r_addend
= (h
->root
.u
.def
.value
3252 + h
->root
.u
.def
.section
->output_section
->vma
3253 + h
->root
.u
.def
.section
->output_offset
);
3257 BFD_ASSERT((h
->got
.offset
& 1) == 0);
3258 bfd_put_32 (output_bfd
, (bfd_vma
) 0, htab
->sgot
->contents
+ h
->got
.offset
);
3259 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_GLOB_DAT
);
3263 loc
= htab
->srelgot
->contents
;
3264 loc
+= htab
->srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3265 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3270 Elf_Internal_Rela rela
;
3273 /* This symbols needs a copy reloc. Set it up. */
3275 if (h
->dynindx
== -1
3276 || (h
->root
.type
!= bfd_link_hash_defined
3277 && h
->root
.type
!= bfd_link_hash_defweak
)
3278 || htab
->srelbss
== NULL
)
3281 rela
.r_offset
= (h
->root
.u
.def
.value
3282 + h
->root
.u
.def
.section
->output_section
->vma
3283 + h
->root
.u
.def
.section
->output_offset
);
3284 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_COPY
);
3286 loc
= htab
->srelbss
->contents
;
3287 loc
+= htab
->srelbss
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3288 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3291 /* Mark some specially defined symbols as absolute. */
3292 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
3293 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0
3294 || strcmp (h
->root
.root
.string
, "_PROCEDURE_LINKAGE_TABLE_") == 0)
3295 sym
->st_shndx
= SHN_ABS
;
3300 /* Used to decide how to sort relocs in an optimal manner for the
3301 dynamic linker, before writing them out. */
3303 static enum elf_reloc_type_class
3304 elf_s390_reloc_type_class (rela
)
3305 const Elf_Internal_Rela
*rela
;
3307 switch ((int) ELF32_R_TYPE (rela
->r_info
))
3309 case R_390_RELATIVE
:
3310 return reloc_class_relative
;
3311 case R_390_JMP_SLOT
:
3312 return reloc_class_plt
;
3314 return reloc_class_copy
;
3316 return reloc_class_normal
;
3320 /* Finish up the dynamic sections. */
3323 elf_s390_finish_dynamic_sections (output_bfd
, info
)
3325 struct bfd_link_info
*info
;
3327 struct elf_s390_link_hash_table
*htab
;
3331 htab
= elf_s390_hash_table (info
);
3332 dynobj
= htab
->elf
.dynobj
;
3333 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
3335 if (htab
->elf
.dynamic_sections_created
)
3337 Elf32_External_Dyn
*dyncon
, *dynconend
;
3339 if (sdyn
== NULL
|| htab
->sgot
== NULL
)
3342 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3343 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3344 for (; dyncon
< dynconend
; dyncon
++)
3346 Elf_Internal_Dyn dyn
;
3349 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3357 dyn
.d_un
.d_ptr
= htab
->sgot
->output_section
->vma
;
3361 dyn
.d_un
.d_ptr
= htab
->srelplt
->output_section
->vma
;
3365 s
= htab
->srelplt
->output_section
;
3366 dyn
.d_un
.d_val
= s
->size
;
3370 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3373 /* Fill in the special first entry in the procedure linkage table. */
3374 if (htab
->splt
&& htab
->splt
->size
> 0)
3376 memset (htab
->splt
->contents
, 0, PLT_FIRST_ENTRY_SIZE
);
3379 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_FIRST_ENTRY_WORD0
,
3380 htab
->splt
->contents
);
3381 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_FIRST_ENTRY_WORD1
,
3382 htab
->splt
->contents
+4 );
3383 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_FIRST_ENTRY_WORD2
,
3384 htab
->splt
->contents
+8 );
3385 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_FIRST_ENTRY_WORD3
,
3386 htab
->splt
->contents
+12 );
3387 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_FIRST_ENTRY_WORD4
,
3388 htab
->splt
->contents
+16 );
3392 bfd_put_32 (output_bfd
, (bfd_vma
)PLT_FIRST_ENTRY_WORD0
,
3393 htab
->splt
->contents
);
3394 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD1
,
3395 htab
->splt
->contents
+4 );
3396 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD2
,
3397 htab
->splt
->contents
+8 );
3398 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD3
,
3399 htab
->splt
->contents
+12 );
3400 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD4
,
3401 htab
->splt
->contents
+16 );
3402 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_FIRST_ENTRY_WORD5
,
3403 htab
->splt
->contents
+20 );
3404 bfd_put_32 (output_bfd
,
3405 htab
->sgotplt
->output_section
->vma
3406 + htab
->sgotplt
->output_offset
,
3407 htab
->splt
->contents
+ 24);
3409 elf_section_data (htab
->splt
->output_section
)
3410 ->this_hdr
.sh_entsize
= 4;
3417 /* Fill in the first three entries in the global offset table. */
3418 if (htab
->sgotplt
->size
> 0)
3420 bfd_put_32 (output_bfd
,
3421 (sdyn
== NULL
? (bfd_vma
) 0
3422 : sdyn
->output_section
->vma
+ sdyn
->output_offset
),
3423 htab
->sgotplt
->contents
);
3424 /* One entry for shared object struct ptr. */
3425 bfd_put_32 (output_bfd
, (bfd_vma
) 0, htab
->sgotplt
->contents
+ 4);
3426 /* One entry for _dl_runtime_resolve. */
3427 bfd_put_32 (output_bfd
, (bfd_vma
) 0, htab
->sgotplt
->contents
+ 8);
3430 elf_section_data (htab
->sgotplt
->output_section
)
3431 ->this_hdr
.sh_entsize
= 4;
3437 elf_s390_grok_prstatus (abfd
, note
)
3439 Elf_Internal_Note
* note
;
3444 switch (note
->descsz
)
3449 case 224: /* S/390 Linux. */
3451 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
3454 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
3462 /* Make a ".reg/999" section. */
3463 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
3464 size
, note
->descpos
+ offset
);
3467 /* Return address for Ith PLT stub in section PLT, for relocation REL
3468 or (bfd_vma) -1 if it should not be included. */
3471 elf_s390_plt_sym_val (bfd_vma i
, const asection
*plt
,
3472 const arelent
*rel ATTRIBUTE_UNUSED
)
3474 return plt
->vma
+ PLT_FIRST_ENTRY_SIZE
+ i
* PLT_ENTRY_SIZE
;
3478 #define TARGET_BIG_SYM bfd_elf32_s390_vec
3479 #define TARGET_BIG_NAME "elf32-s390"
3480 #define ELF_ARCH bfd_arch_s390
3481 #define ELF_MACHINE_CODE EM_S390
3482 #define ELF_MACHINE_ALT1 EM_S390_OLD
3483 #define ELF_MAXPAGESIZE 0x1000
3485 #define elf_backend_can_gc_sections 1
3486 #define elf_backend_can_refcount 1
3487 #define elf_backend_want_got_plt 1
3488 #define elf_backend_plt_readonly 1
3489 #define elf_backend_want_plt_sym 0
3490 #define elf_backend_got_header_size 12
3491 #define elf_backend_rela_normal 1
3493 #define elf_info_to_howto elf_s390_info_to_howto
3495 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
3496 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
3497 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3499 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3500 #define elf_backend_check_relocs elf_s390_check_relocs
3501 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3502 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3503 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3504 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3505 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3506 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3507 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3508 #define elf_backend_relocate_section elf_s390_relocate_section
3509 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3510 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3511 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
3512 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
3514 #define bfd_elf32_mkobject elf_s390_mkobject
3515 #define elf_backend_object_p elf_s390_object_p
3517 #include "elf32-target.h"