1 /* IBM S/390-specific support for 32-bit ELF
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
3 2011, 2012 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 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
29 static reloc_howto_type
*elf_s390_reloc_type_lookup
30 PARAMS ((bfd
*, bfd_reloc_code_real_type
));
31 static void elf_s390_info_to_howto
32 PARAMS ((bfd
*, arelent
*, Elf_Internal_Rela
*));
33 static bfd_boolean elf_s390_is_local_label_name
34 PARAMS ((bfd
*, const char *));
35 static struct bfd_hash_entry
*link_hash_newfunc
36 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
37 static struct bfd_link_hash_table
*elf_s390_link_hash_table_create
39 static bfd_boolean create_got_section
40 PARAMS((bfd
*, struct bfd_link_info
*));
41 static bfd_boolean elf_s390_create_dynamic_sections
42 PARAMS((bfd
*, struct bfd_link_info
*));
43 static void elf_s390_copy_indirect_symbol
44 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*,
45 struct elf_link_hash_entry
*));
46 static bfd_boolean elf_s390_check_relocs
47 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
48 const Elf_Internal_Rela
*));
49 struct elf_s390_link_hash_entry
;
50 static void elf_s390_adjust_gotplt
51 PARAMS ((struct elf_s390_link_hash_entry
*));
52 static bfd_boolean elf_s390_adjust_dynamic_symbol
53 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
54 static bfd_boolean allocate_dynrelocs
55 PARAMS ((struct elf_link_hash_entry
*, PTR
));
56 static bfd_boolean readonly_dynrelocs
57 PARAMS ((struct elf_link_hash_entry
*, PTR
));
58 static bfd_boolean elf_s390_size_dynamic_sections
59 PARAMS ((bfd
*, struct bfd_link_info
*));
60 static bfd_boolean elf_s390_relocate_section
61 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
62 Elf_Internal_Rela
*, Elf_Internal_Sym
*, asection
**));
63 static bfd_boolean elf_s390_finish_dynamic_symbol
64 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*,
66 static enum elf_reloc_type_class elf_s390_reloc_type_class
67 PARAMS ((const Elf_Internal_Rela
*));
68 static bfd_boolean elf_s390_finish_dynamic_sections
69 PARAMS ((bfd
*, struct bfd_link_info
*));
70 static bfd_boolean elf_s390_object_p
72 static bfd_boolean elf_s390_grok_prstatus
73 PARAMS ((bfd
*, Elf_Internal_Note
*));
74 static int elf_s390_tls_transition
75 PARAMS ((struct bfd_link_info
*, int, int));
76 static bfd_reloc_status_type s390_tls_reloc
77 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
78 static bfd_vma dtpoff_base
79 PARAMS ((struct bfd_link_info
*));
81 PARAMS ((struct bfd_link_info
*, bfd_vma
));
82 static void invalid_tls_insn
83 PARAMS ((bfd
*, asection
*, Elf_Internal_Rela
*));
84 static bfd_reloc_status_type s390_elf_ldisp_reloc
85 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
89 /* The relocation "howto" table. */
91 static reloc_howto_type elf_howto_table
[] =
93 HOWTO (R_390_NONE
, /* type */
95 0, /* size (0 = byte, 1 = short, 2 = long) */
97 FALSE
, /* pc_relative */
99 complain_overflow_dont
, /* complain_on_overflow */
100 bfd_elf_generic_reloc
, /* special_function */
101 "R_390_NONE", /* name */
102 FALSE
, /* partial_inplace */
105 FALSE
), /* pcrel_offset */
107 HOWTO(R_390_8
, 0, 0, 8, FALSE
, 0, complain_overflow_bitfield
,
108 bfd_elf_generic_reloc
, "R_390_8", FALSE
, 0,0x000000ff, FALSE
),
109 HOWTO(R_390_12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
110 bfd_elf_generic_reloc
, "R_390_12", FALSE
, 0,0x00000fff, FALSE
),
111 HOWTO(R_390_16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
112 bfd_elf_generic_reloc
, "R_390_16", FALSE
, 0,0x0000ffff, FALSE
),
113 HOWTO(R_390_32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
114 bfd_elf_generic_reloc
, "R_390_32", FALSE
, 0,0xffffffff, FALSE
),
115 HOWTO(R_390_PC32
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
116 bfd_elf_generic_reloc
, "R_390_PC32", FALSE
, 0,0xffffffff, TRUE
),
117 HOWTO(R_390_GOT12
, 0, 1, 12, FALSE
, 0, complain_overflow_bitfield
,
118 bfd_elf_generic_reloc
, "R_390_GOT12", FALSE
, 0,0x00000fff, FALSE
),
119 HOWTO(R_390_GOT32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
120 bfd_elf_generic_reloc
, "R_390_GOT32", FALSE
, 0,0xffffffff, FALSE
),
121 HOWTO(R_390_PLT32
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
122 bfd_elf_generic_reloc
, "R_390_PLT32", FALSE
, 0,0xffffffff, TRUE
),
123 HOWTO(R_390_COPY
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
124 bfd_elf_generic_reloc
, "R_390_COPY", FALSE
, 0,0xffffffff, FALSE
),
125 HOWTO(R_390_GLOB_DAT
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
126 bfd_elf_generic_reloc
, "R_390_GLOB_DAT", FALSE
, 0,0xffffffff, FALSE
),
127 HOWTO(R_390_JMP_SLOT
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
128 bfd_elf_generic_reloc
, "R_390_JMP_SLOT", FALSE
, 0,0xffffffff, FALSE
),
129 HOWTO(R_390_RELATIVE
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
130 bfd_elf_generic_reloc
, "R_390_RELATIVE", FALSE
, 0,0xffffffff, FALSE
),
131 HOWTO(R_390_GOTOFF32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
132 bfd_elf_generic_reloc
, "R_390_GOTOFF32", FALSE
, 0,0xffffffff, FALSE
),
133 HOWTO(R_390_GOTPC
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
134 bfd_elf_generic_reloc
, "R_390_GOTPC", FALSE
, 0,0xffffffff, TRUE
),
135 HOWTO(R_390_GOT16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
136 bfd_elf_generic_reloc
, "R_390_GOT16", FALSE
, 0,0x0000ffff, FALSE
),
137 HOWTO(R_390_PC16
, 0, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
138 bfd_elf_generic_reloc
, "R_390_PC16", FALSE
, 0,0x0000ffff, TRUE
),
139 HOWTO(R_390_PC16DBL
, 1, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
140 bfd_elf_generic_reloc
, "R_390_PC16DBL", FALSE
, 0,0x0000ffff, TRUE
),
141 HOWTO(R_390_PLT16DBL
, 1, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
142 bfd_elf_generic_reloc
, "R_390_PLT16DBL", FALSE
, 0,0x0000ffff, TRUE
),
143 HOWTO(R_390_PC32DBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
144 bfd_elf_generic_reloc
, "R_390_PC32DBL", FALSE
, 0,0xffffffff, TRUE
),
145 HOWTO(R_390_PLT32DBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
146 bfd_elf_generic_reloc
, "R_390_PLT32DBL", FALSE
, 0,0xffffffff, TRUE
),
147 HOWTO(R_390_GOTPCDBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
148 bfd_elf_generic_reloc
, "R_390_GOTPCDBL", FALSE
, 0,0xffffffff, TRUE
),
149 EMPTY_HOWTO (R_390_64
), /* Empty entry for R_390_64. */
150 EMPTY_HOWTO (R_390_PC64
), /* Empty entry for R_390_PC64. */
151 EMPTY_HOWTO (R_390_GOT64
), /* Empty entry for R_390_GOT64. */
152 EMPTY_HOWTO (R_390_PLT64
), /* Empty entry for R_390_PLT64. */
153 HOWTO(R_390_GOTENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
154 bfd_elf_generic_reloc
, "R_390_GOTENT", FALSE
, 0,0xffffffff, TRUE
),
155 HOWTO(R_390_GOTOFF16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
156 bfd_elf_generic_reloc
, "R_390_GOTOFF16", FALSE
, 0,0x0000ffff, FALSE
),
157 EMPTY_HOWTO (R_390_GOTOFF64
), /* Empty entry for R_390_GOTOFF64. */
158 HOWTO(R_390_GOTPLT12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
159 bfd_elf_generic_reloc
, "R_390_GOTPLT12", FALSE
, 0,0x00000fff, FALSE
),
160 HOWTO(R_390_GOTPLT16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
161 bfd_elf_generic_reloc
, "R_390_GOTPLT16", FALSE
, 0,0x0000ffff, FALSE
),
162 HOWTO(R_390_GOTPLT32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
163 bfd_elf_generic_reloc
, "R_390_GOTPLT32", FALSE
, 0,0xffffffff, FALSE
),
164 EMPTY_HOWTO (R_390_GOTPLT64
), /* Empty entry for R_390_GOTPLT64. */
165 HOWTO(R_390_GOTPLTENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
166 bfd_elf_generic_reloc
, "R_390_GOTPLTENT",FALSE
, 0,0xffffffff, TRUE
),
167 HOWTO(R_390_PLTOFF16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
168 bfd_elf_generic_reloc
, "R_390_PLTOFF16", FALSE
, 0,0x0000ffff, FALSE
),
169 HOWTO(R_390_PLTOFF32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
170 bfd_elf_generic_reloc
, "R_390_PLTOFF32", FALSE
, 0,0xffffffff, FALSE
),
171 EMPTY_HOWTO (R_390_PLTOFF64
), /* Empty entry for R_390_PLTOFF64. */
172 HOWTO(R_390_TLS_LOAD
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
173 s390_tls_reloc
, "R_390_TLS_LOAD", FALSE
, 0, 0, FALSE
),
174 HOWTO(R_390_TLS_GDCALL
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
175 s390_tls_reloc
, "R_390_TLS_GDCALL", FALSE
, 0, 0, FALSE
),
176 HOWTO(R_390_TLS_LDCALL
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
177 s390_tls_reloc
, "R_390_TLS_LDCALL", FALSE
, 0, 0, FALSE
),
178 HOWTO(R_390_TLS_GD32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
179 bfd_elf_generic_reloc
, "R_390_TLS_GD32", FALSE
, 0, 0xffffffff, FALSE
),
180 EMPTY_HOWTO (R_390_TLS_GD64
), /* Empty entry for R_390_TLS_GD64. */
181 HOWTO(R_390_TLS_GOTIE12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
182 bfd_elf_generic_reloc
, "R_390_TLS_GOTIE12", FALSE
, 0, 0x00000fff, FALSE
),
183 HOWTO(R_390_TLS_GOTIE32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
184 bfd_elf_generic_reloc
, "R_390_TLS_GOTIE32", FALSE
, 0, 0xffffffff, FALSE
),
185 EMPTY_HOWTO (R_390_TLS_GOTIE64
), /* Empty entry for R_390_TLS_GOTIE64. */
186 HOWTO(R_390_TLS_LDM32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
187 bfd_elf_generic_reloc
, "R_390_TLS_LDM32", FALSE
, 0, 0xffffffff, FALSE
),
188 EMPTY_HOWTO (R_390_TLS_LDM64
), /* Empty entry for R_390_TLS_LDM64. */
189 HOWTO(R_390_TLS_IE32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
190 bfd_elf_generic_reloc
, "R_390_TLS_IE32", FALSE
, 0, 0xffffffff, FALSE
),
191 EMPTY_HOWTO (R_390_TLS_IE64
), /* Empty entry for R_390_TLS_IE64. */
192 HOWTO(R_390_TLS_IEENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
193 bfd_elf_generic_reloc
, "R_390_TLS_IEENT", FALSE
, 0, 0xffffffff, TRUE
),
194 HOWTO(R_390_TLS_LE32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
195 bfd_elf_generic_reloc
, "R_390_TLS_LE32", FALSE
, 0, 0xffffffff, FALSE
),
196 EMPTY_HOWTO (R_390_TLS_LE64
), /* Empty entry for R_390_TLS_LE64. */
197 HOWTO(R_390_TLS_LDO32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
198 bfd_elf_generic_reloc
, "R_390_TLS_LDO32", FALSE
, 0, 0xffffffff, FALSE
),
199 EMPTY_HOWTO (R_390_TLS_LDO64
), /* Empty entry for R_390_TLS_LDO64. */
200 HOWTO(R_390_TLS_DTPMOD
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
201 bfd_elf_generic_reloc
, "R_390_TLS_DTPMOD", FALSE
, 0, 0xffffffff, FALSE
),
202 HOWTO(R_390_TLS_DTPOFF
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
203 bfd_elf_generic_reloc
, "R_390_TLS_DTPOFF", FALSE
, 0, 0xffffffff, FALSE
),
204 HOWTO(R_390_TLS_TPOFF
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
205 bfd_elf_generic_reloc
, "R_390_TLS_TPOFF", FALSE
, 0, 0xffffffff, FALSE
),
206 HOWTO(R_390_20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
207 s390_elf_ldisp_reloc
, "R_390_20", FALSE
, 0,0x0fffff00, FALSE
),
208 HOWTO(R_390_GOT20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
209 s390_elf_ldisp_reloc
, "R_390_GOT20", FALSE
, 0,0x0fffff00, FALSE
),
210 HOWTO(R_390_GOTPLT20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
211 s390_elf_ldisp_reloc
, "R_390_GOTPLT20", FALSE
, 0,0x0fffff00, FALSE
),
212 HOWTO(R_390_TLS_GOTIE20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
213 s390_elf_ldisp_reloc
, "R_390_TLS_GOTIE20", FALSE
, 0,0x0fffff00, FALSE
),
216 /* GNU extension to record C++ vtable hierarchy. */
217 static reloc_howto_type elf32_s390_vtinherit_howto
=
218 HOWTO (R_390_GNU_VTINHERIT
, 0,2,0,FALSE
,0,complain_overflow_dont
, NULL
, "R_390_GNU_VTINHERIT", FALSE
,0, 0, FALSE
);
219 static reloc_howto_type elf32_s390_vtentry_howto
=
220 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
);
222 static reloc_howto_type
*
223 elf_s390_reloc_type_lookup (abfd
, code
)
224 bfd
*abfd ATTRIBUTE_UNUSED
;
225 bfd_reloc_code_real_type code
;
230 return &elf_howto_table
[(int) R_390_NONE
];
232 return &elf_howto_table
[(int) R_390_8
];
233 case BFD_RELOC_390_12
:
234 return &elf_howto_table
[(int) R_390_12
];
236 return &elf_howto_table
[(int) R_390_16
];
238 return &elf_howto_table
[(int) R_390_32
];
240 return &elf_howto_table
[(int) R_390_32
];
241 case BFD_RELOC_32_PCREL
:
242 return &elf_howto_table
[(int) R_390_PC32
];
243 case BFD_RELOC_390_GOT12
:
244 return &elf_howto_table
[(int) R_390_GOT12
];
245 case BFD_RELOC_32_GOT_PCREL
:
246 return &elf_howto_table
[(int) R_390_GOT32
];
247 case BFD_RELOC_390_PLT32
:
248 return &elf_howto_table
[(int) R_390_PLT32
];
249 case BFD_RELOC_390_COPY
:
250 return &elf_howto_table
[(int) R_390_COPY
];
251 case BFD_RELOC_390_GLOB_DAT
:
252 return &elf_howto_table
[(int) R_390_GLOB_DAT
];
253 case BFD_RELOC_390_JMP_SLOT
:
254 return &elf_howto_table
[(int) R_390_JMP_SLOT
];
255 case BFD_RELOC_390_RELATIVE
:
256 return &elf_howto_table
[(int) R_390_RELATIVE
];
257 case BFD_RELOC_32_GOTOFF
:
258 return &elf_howto_table
[(int) R_390_GOTOFF32
];
259 case BFD_RELOC_390_GOTPC
:
260 return &elf_howto_table
[(int) R_390_GOTPC
];
261 case BFD_RELOC_390_GOT16
:
262 return &elf_howto_table
[(int) R_390_GOT16
];
263 case BFD_RELOC_16_PCREL
:
264 return &elf_howto_table
[(int) R_390_PC16
];
265 case BFD_RELOC_390_PC16DBL
:
266 return &elf_howto_table
[(int) R_390_PC16DBL
];
267 case BFD_RELOC_390_PLT16DBL
:
268 return &elf_howto_table
[(int) R_390_PLT16DBL
];
269 case BFD_RELOC_390_PC32DBL
:
270 return &elf_howto_table
[(int) R_390_PC32DBL
];
271 case BFD_RELOC_390_PLT32DBL
:
272 return &elf_howto_table
[(int) R_390_PLT32DBL
];
273 case BFD_RELOC_390_GOTPCDBL
:
274 return &elf_howto_table
[(int) R_390_GOTPCDBL
];
275 case BFD_RELOC_390_GOTENT
:
276 return &elf_howto_table
[(int) R_390_GOTENT
];
277 case BFD_RELOC_16_GOTOFF
:
278 return &elf_howto_table
[(int) R_390_GOTOFF16
];
279 case BFD_RELOC_390_GOTPLT12
:
280 return &elf_howto_table
[(int) R_390_GOTPLT12
];
281 case BFD_RELOC_390_GOTPLT16
:
282 return &elf_howto_table
[(int) R_390_GOTPLT16
];
283 case BFD_RELOC_390_GOTPLT32
:
284 return &elf_howto_table
[(int) R_390_GOTPLT32
];
285 case BFD_RELOC_390_GOTPLTENT
:
286 return &elf_howto_table
[(int) R_390_GOTPLTENT
];
287 case BFD_RELOC_390_PLTOFF16
:
288 return &elf_howto_table
[(int) R_390_PLTOFF16
];
289 case BFD_RELOC_390_PLTOFF32
:
290 return &elf_howto_table
[(int) R_390_PLTOFF32
];
291 case BFD_RELOC_390_TLS_LOAD
:
292 return &elf_howto_table
[(int) R_390_TLS_LOAD
];
293 case BFD_RELOC_390_TLS_GDCALL
:
294 return &elf_howto_table
[(int) R_390_TLS_GDCALL
];
295 case BFD_RELOC_390_TLS_LDCALL
:
296 return &elf_howto_table
[(int) R_390_TLS_LDCALL
];
297 case BFD_RELOC_390_TLS_GD32
:
298 return &elf_howto_table
[(int) R_390_TLS_GD32
];
299 case BFD_RELOC_390_TLS_GOTIE12
:
300 return &elf_howto_table
[(int) R_390_TLS_GOTIE12
];
301 case BFD_RELOC_390_TLS_GOTIE32
:
302 return &elf_howto_table
[(int) R_390_TLS_GOTIE32
];
303 case BFD_RELOC_390_TLS_LDM32
:
304 return &elf_howto_table
[(int) R_390_TLS_LDM32
];
305 case BFD_RELOC_390_TLS_IE32
:
306 return &elf_howto_table
[(int) R_390_TLS_IE32
];
307 case BFD_RELOC_390_TLS_IEENT
:
308 return &elf_howto_table
[(int) R_390_TLS_IEENT
];
309 case BFD_RELOC_390_TLS_LE32
:
310 return &elf_howto_table
[(int) R_390_TLS_LE32
];
311 case BFD_RELOC_390_TLS_LDO32
:
312 return &elf_howto_table
[(int) R_390_TLS_LDO32
];
313 case BFD_RELOC_390_TLS_DTPMOD
:
314 return &elf_howto_table
[(int) R_390_TLS_DTPMOD
];
315 case BFD_RELOC_390_TLS_DTPOFF
:
316 return &elf_howto_table
[(int) R_390_TLS_DTPOFF
];
317 case BFD_RELOC_390_TLS_TPOFF
:
318 return &elf_howto_table
[(int) R_390_TLS_TPOFF
];
319 case BFD_RELOC_390_20
:
320 return &elf_howto_table
[(int) R_390_20
];
321 case BFD_RELOC_390_GOT20
:
322 return &elf_howto_table
[(int) R_390_GOT20
];
323 case BFD_RELOC_390_GOTPLT20
:
324 return &elf_howto_table
[(int) R_390_GOTPLT20
];
325 case BFD_RELOC_390_TLS_GOTIE20
:
326 return &elf_howto_table
[(int) R_390_TLS_GOTIE20
];
327 case BFD_RELOC_VTABLE_INHERIT
:
328 return &elf32_s390_vtinherit_howto
;
329 case BFD_RELOC_VTABLE_ENTRY
:
330 return &elf32_s390_vtentry_howto
;
337 static reloc_howto_type
*
338 elf_s390_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
343 for (i
= 0; i
< sizeof (elf_howto_table
) / sizeof (elf_howto_table
[0]); i
++)
344 if (elf_howto_table
[i
].name
!= NULL
345 && strcasecmp (elf_howto_table
[i
].name
, r_name
) == 0)
346 return &elf_howto_table
[i
];
348 if (strcasecmp (elf32_s390_vtinherit_howto
.name
, r_name
) == 0)
349 return &elf32_s390_vtinherit_howto
;
350 if (strcasecmp (elf32_s390_vtentry_howto
.name
, r_name
) == 0)
351 return &elf32_s390_vtentry_howto
;
356 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
357 and elf32-s390.c has its own copy. */
360 elf_s390_info_to_howto (abfd
, cache_ptr
, dst
)
361 bfd
*abfd ATTRIBUTE_UNUSED
;
363 Elf_Internal_Rela
*dst
;
365 unsigned int r_type
= ELF32_R_TYPE(dst
->r_info
);
368 case R_390_GNU_VTINHERIT
:
369 cache_ptr
->howto
= &elf32_s390_vtinherit_howto
;
372 case R_390_GNU_VTENTRY
:
373 cache_ptr
->howto
= &elf32_s390_vtentry_howto
;
377 if (r_type
>= sizeof (elf_howto_table
) / sizeof (elf_howto_table
[0]))
379 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
383 cache_ptr
->howto
= &elf_howto_table
[r_type
];
387 /* A relocation function which doesn't do anything. */
388 static bfd_reloc_status_type
389 s390_tls_reloc (abfd
, reloc_entry
, symbol
, data
, input_section
,
390 output_bfd
, error_message
)
391 bfd
*abfd ATTRIBUTE_UNUSED
;
392 arelent
*reloc_entry
;
393 asymbol
*symbol ATTRIBUTE_UNUSED
;
394 PTR data ATTRIBUTE_UNUSED
;
395 asection
*input_section
;
397 char **error_message ATTRIBUTE_UNUSED
;
400 reloc_entry
->address
+= input_section
->output_offset
;
404 /* Handle the large displacement relocs. */
405 static bfd_reloc_status_type
406 s390_elf_ldisp_reloc (abfd
, reloc_entry
, symbol
, data
, input_section
,
407 output_bfd
, error_message
)
408 bfd
*abfd ATTRIBUTE_UNUSED
;
409 arelent
*reloc_entry
;
411 PTR data ATTRIBUTE_UNUSED
;
412 asection
*input_section
;
414 char **error_message ATTRIBUTE_UNUSED
;
416 reloc_howto_type
*howto
= reloc_entry
->howto
;
420 if (output_bfd
!= (bfd
*) NULL
421 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
422 && (! howto
->partial_inplace
423 || reloc_entry
->addend
== 0))
425 reloc_entry
->address
+= input_section
->output_offset
;
429 if (output_bfd
!= NULL
)
430 return bfd_reloc_continue
;
432 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
433 return bfd_reloc_outofrange
;
435 relocation
= (symbol
->value
436 + symbol
->section
->output_section
->vma
437 + symbol
->section
->output_offset
);
438 relocation
+= reloc_entry
->addend
;
439 if (howto
->pc_relative
)
441 relocation
-= (input_section
->output_section
->vma
442 + input_section
->output_offset
);
443 relocation
-= reloc_entry
->address
;
446 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ reloc_entry
->address
);
447 insn
|= (relocation
& 0xfff) << 16 | (relocation
& 0xff000) >> 4;
448 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ reloc_entry
->address
);
450 if ((bfd_signed_vma
) relocation
< - 0x80000
451 || (bfd_signed_vma
) relocation
> 0x7ffff)
452 return bfd_reloc_overflow
;
458 elf_s390_is_local_label_name (abfd
, name
)
462 if (name
[0] == '.' && (name
[1] == 'X' || name
[1] == 'L'))
465 return _bfd_elf_is_local_label_name (abfd
, name
);
468 /* Functions for the 390 ELF linker. */
470 /* The name of the dynamic interpreter. This is put in the .interp
473 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
475 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
476 copying dynamic variables from a shared lib into an app's dynbss
477 section, and instead use a dynamic relocation to point into the
479 #define ELIMINATE_COPY_RELOCS 1
481 /* The size in bytes of the first entry in the procedure linkage table. */
482 #define PLT_FIRST_ENTRY_SIZE 32
483 /* The size in bytes of an entry in the procedure linkage table. */
484 #define PLT_ENTRY_SIZE 32
486 #define GOT_ENTRY_SIZE 4
488 /* The first three entries in a procedure linkage table are reserved,
489 and the initial contents are unimportant (we zero them out).
490 Subsequent entries look like this. See the SVR4 ABI 386
491 supplement to see how this works. */
493 /* For the s390, simple addr offset can only be 0 - 4096.
494 To use the full 2 GB address space, several instructions
495 are needed to load an address in a register and execute
496 a branch( or just saving the address)
498 Furthermore, only r 0 and 1 are free to use!!! */
500 /* The first 3 words in the GOT are then reserved.
501 Word 0 is the address of the dynamic table.
502 Word 1 is a pointer to a structure describing the object
503 Word 2 is used to point to the loader entry address.
505 The code for position independent PLT entries looks like this:
507 r12 holds addr of the current GOT at entry to the PLT
509 The GOT holds the address in the PLT to be executed.
510 The loader then gets:
511 24(15) = Pointer to the structure describing the object.
512 28(15) = Offset in symbol table
514 The loader must then find the module where the function is
515 and insert the address in the GOT.
517 Note: 390 can only address +- 64 K relative.
518 We check if offset > 65536, then make a relative branch -64xxx
519 back to a previous defined branch
521 PLT1: BASR 1,0 # 2 bytes
522 L 1,22(1) # 4 bytes Load offset in GOT in r 1
523 L 1,(1,12) # 4 bytes Load address from GOT in r1
524 BCR 15,1 # 2 bytes Jump to address
525 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
526 L 1,14(1) # 4 bytes Load offset in symol table in r1
527 BRC 15,-x # 4 bytes Jump to start of PLT
528 .word 0 # 2 bytes filler
529 .long ? # 4 bytes offset in GOT
530 .long ? # 4 bytes offset into symbol table
532 This was the general case. There are two additional, optimizes PLT
533 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
534 First the one for GOT offsets < 4096:
536 PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
537 BCR 15,1 # 2 bytes Jump to address
538 .word 0,0,0 # 6 bytes filler
539 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
540 L 1,14(1) # 4 bytes Load offset in symbol table in r1
541 BRC 15,-x # 4 bytes Jump to start of PLT
542 .word 0,0,0 # 6 bytes filler
543 .long ? # 4 bytes offset into symbol table
545 Second the one for GOT offsets < 32768:
547 PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
548 L 1,(1,12) # 4 bytes Load address from GOT to r1
549 BCR 15,1 # 2 bytes Jump to address
550 .word 0 # 2 bytes filler
551 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
552 L 1,14(1) # 4 bytes Load offset in symbol table in r1
553 BRC 15,-x # 4 bytes Jump to start of PLT
554 .word 0,0,0 # 6 bytes filler
555 .long ? # 4 bytes offset into symbol table
557 Total = 32 bytes per PLT entry
559 The code for static build PLT entries looks like this:
561 PLT1: BASR 1,0 # 2 bytes
562 L 1,22(1) # 4 bytes Load address of GOT entry
563 L 1,0(0,1) # 4 bytes Load address from GOT in r1
564 BCR 15,1 # 2 bytes Jump to address
565 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
566 L 1,14(1) # 4 bytes Load offset in symbol table in r1
567 BRC 15,-x # 4 bytes Jump to start of PLT
568 .word 0 # 2 bytes filler
569 .long ? # 4 bytes address of GOT entry
570 .long ? # 4 bytes offset into symbol table */
572 static const bfd_byte elf_s390_plt_entry
[PLT_ENTRY_SIZE
] =
574 0x0d, 0x10, /* basr %r1,%r0 */
575 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
576 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */
577 0x07, 0xf1, /* br %r1 */
578 0x0d, 0x10, /* basr %r1,%r0 */
579 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
580 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
581 0x00, 0x00, /* padding */
582 0x00, 0x00, 0x00, 0x00, /* GOT offset */
583 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
586 /* Generic PLT pic entry. */
587 static const bfd_byte elf_s390_plt_pic_entry
[PLT_ENTRY_SIZE
] =
589 0x0d, 0x10, /* basr %r1,%r0 */
590 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
591 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
592 0x07, 0xf1, /* br %r1 */
593 0x0d, 0x10, /* basr %r1,%r0 */
594 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
595 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
596 0x00, 0x00, /* padding */
597 0x00, 0x00, 0x00, 0x00, /* GOT offset */
598 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
601 /* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced
602 when generating the PLT slot with the GOT offset. */
603 static const bfd_byte elf_s390_plt_pic12_entry
[PLT_ENTRY_SIZE
] =
605 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */
606 0x07, 0xf1, /* br %r1 */
607 0x00, 0x00, 0x00, 0x00, /* padding */
609 0x0d, 0x10, /* basr %r1,%r0 */
610 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
611 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
612 0x00, 0x00, 0x00, 0x00,
613 0x00, 0x00, 0x00, 0x00
616 /* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced
617 when generating the PLT slot with the GOT offset. */
618 static const bfd_byte elf_s390_plt_pic16_entry
[PLT_ENTRY_SIZE
] =
620 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */
621 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
622 0x07, 0xf1, /* br %r1 */
624 0x0d, 0x10, /* basr %r1,%r0 */
625 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
626 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
627 0x00, 0x00, 0x00, 0x00,
628 0x00, 0x00, 0x00, 0x00,
632 /* The first PLT entry pushes the offset into the symbol table
633 from R1 onto the stack at 8(15) and the loader object info
634 at 12(15), loads the loader address in R1 and jumps to it. */
636 /* The first entry in the PLT for PIC code:
639 ST 1,28(15) # R1 has offset into symbol table
640 L 1,4(12) # Get loader ino(object struct address)
641 ST 1,24(15) # Store address
642 L 1,8(12) # Entry address of loader in R1
643 BR 1 # Jump to loader
645 The first entry in the PLT for static code:
648 ST 1,28(15) # R1 has offset into symbol table
650 L 1,18(0,1) # Get address of GOT
651 MVC 24(4,15),4(1) # Move loader ino to stack
652 L 1,8(1) # Get address of loader
653 BR 1 # Jump to loader
655 .long got # address of GOT */
657 static const bfd_byte elf_s390_plt_first_entry
[PLT_FIRST_ENTRY_SIZE
] =
659 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
660 0x0d, 0x10, /* basr %r1,%r0 */
661 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */
662 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */
663 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */
664 0x07, 0xf1, /* br %r1 */
665 0x00, 0x00, 0x00, 0x00,
666 0x00, 0x00, 0x00, 0x00,
670 static const bfd_byte elf_s390_plt_pic_first_entry
[PLT_FIRST_ENTRY_SIZE
] =
672 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
673 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */
674 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */
675 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */
676 0x07, 0xf1, /* br %r1 */
677 0x00, 0x00, 0x00, 0x00,
678 0x00, 0x00, 0x00, 0x00,
679 0x00, 0x00, 0x00, 0x00,
684 /* s390 ELF linker hash entry. */
686 struct elf_s390_link_hash_entry
688 struct elf_link_hash_entry elf
;
690 /* Track dynamic relocs copied for this symbol. */
691 struct elf_dyn_relocs
*dyn_relocs
;
693 /* Number of GOTPLT references for a function. */
694 bfd_signed_vma gotplt_refcount
;
696 #define GOT_UNKNOWN 0
700 #define GOT_TLS_IE_NLT 4
701 unsigned char tls_type
;
704 #define elf_s390_hash_entry(ent) \
705 ((struct elf_s390_link_hash_entry *)(ent))
707 /* NOTE: Keep this structure in sync with
708 the one declared in elf64-s390.c. */
709 struct elf_s390_obj_tdata
711 struct elf_obj_tdata root
;
713 /* TLS type for each local got entry. */
714 char *local_got_tls_type
;
717 #define elf_s390_tdata(abfd) \
718 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
720 #define elf_s390_local_got_tls_type(abfd) \
721 (elf_s390_tdata (abfd)->local_got_tls_type)
723 #define is_s390_elf(bfd) \
724 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
725 && elf_tdata (bfd) != NULL \
726 && elf_object_id (bfd) == S390_ELF_DATA)
729 elf_s390_mkobject (bfd
*abfd
)
731 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_s390_obj_tdata
),
736 elf_s390_object_p (abfd
)
739 /* Set the right machine number for an s390 elf32 file. */
740 return bfd_default_set_arch_mach (abfd
, bfd_arch_s390
, bfd_mach_s390_31
);
743 /* s390 ELF linker hash table. */
745 struct elf_s390_link_hash_table
747 struct elf_link_hash_table elf
;
749 /* Short-cuts to get to dynamic linker sections. */
759 bfd_signed_vma refcount
;
763 /* Small local sym cache. */
764 struct sym_cache sym_cache
;
767 /* Get the s390 ELF linker hash table from a link_info structure. */
769 #define elf_s390_hash_table(p) \
770 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
771 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
773 /* Create an entry in an s390 ELF linker hash table. */
775 static struct bfd_hash_entry
*
776 link_hash_newfunc (entry
, table
, string
)
777 struct bfd_hash_entry
*entry
;
778 struct bfd_hash_table
*table
;
781 /* Allocate the structure if it has not already been allocated by a
785 entry
= bfd_hash_allocate (table
,
786 sizeof (struct elf_s390_link_hash_entry
));
791 /* Call the allocation method of the superclass. */
792 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
795 struct elf_s390_link_hash_entry
*eh
;
797 eh
= (struct elf_s390_link_hash_entry
*) entry
;
798 eh
->dyn_relocs
= NULL
;
799 eh
->gotplt_refcount
= 0;
800 eh
->tls_type
= GOT_UNKNOWN
;
806 /* Create an s390 ELF linker hash table. */
808 static struct bfd_link_hash_table
*
809 elf_s390_link_hash_table_create (abfd
)
812 struct elf_s390_link_hash_table
*ret
;
813 bfd_size_type amt
= sizeof (struct elf_s390_link_hash_table
);
815 ret
= (struct elf_s390_link_hash_table
*) bfd_malloc (amt
);
819 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
, link_hash_newfunc
,
820 sizeof (struct elf_s390_link_hash_entry
),
834 ret
->tls_ldm_got
.refcount
= 0;
835 ret
->sym_cache
.abfd
= NULL
;
837 return &ret
->elf
.root
;
840 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
841 shortcuts to them in our hash table. */
844 create_got_section (dynobj
, info
)
846 struct bfd_link_info
*info
;
848 struct elf_s390_link_hash_table
*htab
;
850 if (! _bfd_elf_create_got_section (dynobj
, info
))
853 htab
= elf_s390_hash_table (info
);
854 htab
->sgot
= bfd_get_section_by_name (dynobj
, ".got");
855 htab
->sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
856 htab
->srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
857 if (!htab
->sgot
|| !htab
->sgotplt
|| !htab
->srelgot
)
863 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
864 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
868 elf_s390_create_dynamic_sections (dynobj
, info
)
870 struct bfd_link_info
*info
;
872 struct elf_s390_link_hash_table
*htab
;
874 htab
= elf_s390_hash_table (info
);
875 if (!htab
->sgot
&& !create_got_section (dynobj
, info
))
878 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
881 htab
->splt
= bfd_get_section_by_name (dynobj
, ".plt");
882 htab
->srelplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
883 htab
->sdynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
885 htab
->srelbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
887 if (!htab
->splt
|| !htab
->srelplt
|| !htab
->sdynbss
888 || (!info
->shared
&& !htab
->srelbss
))
894 /* Copy the extra info we tack onto an elf_link_hash_entry. */
897 elf_s390_copy_indirect_symbol (info
, dir
, ind
)
898 struct bfd_link_info
*info
;
899 struct elf_link_hash_entry
*dir
, *ind
;
901 struct elf_s390_link_hash_entry
*edir
, *eind
;
903 edir
= (struct elf_s390_link_hash_entry
*) dir
;
904 eind
= (struct elf_s390_link_hash_entry
*) ind
;
906 if (eind
->dyn_relocs
!= NULL
)
908 if (edir
->dyn_relocs
!= NULL
)
910 struct elf_dyn_relocs
**pp
;
911 struct elf_dyn_relocs
*p
;
913 /* Add reloc counts against the indirect sym to the direct sym
914 list. Merge any entries against the same section. */
915 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
917 struct elf_dyn_relocs
*q
;
919 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
920 if (q
->sec
== p
->sec
)
922 q
->pc_count
+= p
->pc_count
;
923 q
->count
+= p
->count
;
930 *pp
= edir
->dyn_relocs
;
933 edir
->dyn_relocs
= eind
->dyn_relocs
;
934 eind
->dyn_relocs
= NULL
;
937 if (ind
->root
.type
== bfd_link_hash_indirect
938 && dir
->got
.refcount
<= 0)
940 edir
->tls_type
= eind
->tls_type
;
941 eind
->tls_type
= GOT_UNKNOWN
;
944 if (ELIMINATE_COPY_RELOCS
945 && ind
->root
.type
!= bfd_link_hash_indirect
946 && dir
->dynamic_adjusted
)
948 /* If called to transfer flags for a weakdef during processing
949 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
950 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
951 dir
->ref_dynamic
|= ind
->ref_dynamic
;
952 dir
->ref_regular
|= ind
->ref_regular
;
953 dir
->ref_regular_nonweak
|= ind
->ref_regular_nonweak
;
954 dir
->needs_plt
|= ind
->needs_plt
;
957 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
961 elf_s390_tls_transition (info
, r_type
, is_local
)
962 struct bfd_link_info
*info
;
974 return R_390_TLS_LE32
;
975 return R_390_TLS_IE32
;
976 case R_390_TLS_GOTIE32
:
978 return R_390_TLS_LE32
;
979 return R_390_TLS_GOTIE32
;
980 case R_390_TLS_LDM32
:
981 return R_390_TLS_LE32
;
987 /* Look through the relocs for a section during the first phase, and
988 allocate space in the global offset table or procedure linkage
992 elf_s390_check_relocs (abfd
, info
, sec
, relocs
)
994 struct bfd_link_info
*info
;
996 const Elf_Internal_Rela
*relocs
;
998 struct elf_s390_link_hash_table
*htab
;
999 Elf_Internal_Shdr
*symtab_hdr
;
1000 struct elf_link_hash_entry
**sym_hashes
;
1001 const Elf_Internal_Rela
*rel
;
1002 const Elf_Internal_Rela
*rel_end
;
1004 bfd_signed_vma
*local_got_refcounts
;
1005 int tls_type
, old_tls_type
;
1007 if (info
->relocatable
)
1010 BFD_ASSERT (is_s390_elf (abfd
));
1012 htab
= elf_s390_hash_table (info
);
1013 symtab_hdr
= &elf_symtab_hdr (abfd
);
1014 sym_hashes
= elf_sym_hashes (abfd
);
1015 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1019 rel_end
= relocs
+ sec
->reloc_count
;
1020 for (rel
= relocs
; rel
< rel_end
; rel
++)
1022 unsigned int r_type
;
1023 unsigned long r_symndx
;
1024 struct elf_link_hash_entry
*h
;
1026 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1028 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
1030 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"),
1035 if (r_symndx
< symtab_hdr
->sh_info
)
1039 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1040 while (h
->root
.type
== bfd_link_hash_indirect
1041 || h
->root
.type
== bfd_link_hash_warning
)
1042 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1045 /* Create got section and local_got_refcounts array if they
1047 r_type
= elf_s390_tls_transition (info
,
1048 ELF32_R_TYPE (rel
->r_info
),
1057 case R_390_GOTPLT12
:
1058 case R_390_GOTPLT16
:
1059 case R_390_GOTPLT20
:
1060 case R_390_GOTPLT32
:
1061 case R_390_GOTPLTENT
:
1062 case R_390_TLS_GD32
:
1063 case R_390_TLS_GOTIE12
:
1064 case R_390_TLS_GOTIE20
:
1065 case R_390_TLS_GOTIE32
:
1066 case R_390_TLS_IEENT
:
1067 case R_390_TLS_IE32
:
1068 case R_390_TLS_LDM32
:
1070 && local_got_refcounts
== NULL
)
1074 size
= symtab_hdr
->sh_info
;
1075 size
*= (sizeof (bfd_signed_vma
) + sizeof(char));
1076 local_got_refcounts
= ((bfd_signed_vma
*)
1077 bfd_zalloc (abfd
, size
));
1078 if (local_got_refcounts
== NULL
)
1080 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1081 elf_s390_local_got_tls_type (abfd
)
1082 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
1085 case R_390_GOTOFF16
:
1086 case R_390_GOTOFF32
:
1088 case R_390_GOTPCDBL
:
1089 if (htab
->sgot
== NULL
)
1091 if (htab
->elf
.dynobj
== NULL
)
1092 htab
->elf
.dynobj
= abfd
;
1093 if (!create_got_section (htab
->elf
.dynobj
, info
))
1100 case R_390_GOTOFF16
:
1101 case R_390_GOTOFF32
:
1103 case R_390_GOTPCDBL
:
1104 /* Got is created, nothing to be done. */
1107 case R_390_PLT16DBL
:
1108 case R_390_PLT32DBL
:
1110 case R_390_PLTOFF16
:
1111 case R_390_PLTOFF32
:
1112 /* This symbol requires a procedure linkage table entry. We
1113 actually build the entry in adjust_dynamic_symbol,
1114 because this might be a case of linking PIC code which is
1115 never referenced by a dynamic object, in which case we
1116 don't need to generate a procedure linkage table entry
1119 /* If this is a local symbol, we resolve it directly without
1120 creating a procedure linkage table entry. */
1124 h
->plt
.refcount
+= 1;
1128 case R_390_GOTPLT12
:
1129 case R_390_GOTPLT16
:
1130 case R_390_GOTPLT20
:
1131 case R_390_GOTPLT32
:
1132 case R_390_GOTPLTENT
:
1133 /* This symbol requires either a procedure linkage table entry
1134 or an entry in the local got. We actually build the entry
1135 in adjust_dynamic_symbol because whether this is really a
1136 global reference can change and with it the fact if we have
1137 to create a plt entry or a local got entry. To be able to
1138 make a once global symbol a local one we have to keep track
1139 of the number of gotplt references that exist for this
1143 ((struct elf_s390_link_hash_entry
*) h
)->gotplt_refcount
++;
1145 h
->plt
.refcount
+= 1;
1148 local_got_refcounts
[r_symndx
] += 1;
1151 case R_390_TLS_LDM32
:
1152 htab
->tls_ldm_got
.refcount
+= 1;
1155 case R_390_TLS_IE32
:
1156 case R_390_TLS_GOTIE12
:
1157 case R_390_TLS_GOTIE20
:
1158 case R_390_TLS_GOTIE32
:
1159 case R_390_TLS_IEENT
:
1161 info
->flags
|= DF_STATIC_TLS
;
1169 case R_390_TLS_GD32
:
1170 /* This symbol requires a global offset table entry. */
1179 tls_type
= GOT_NORMAL
;
1181 case R_390_TLS_GD32
:
1182 tls_type
= GOT_TLS_GD
;
1184 case R_390_TLS_IE32
:
1185 case R_390_TLS_GOTIE32
:
1186 tls_type
= GOT_TLS_IE
;
1188 case R_390_TLS_GOTIE12
:
1189 case R_390_TLS_GOTIE20
:
1190 case R_390_TLS_IEENT
:
1191 tls_type
= GOT_TLS_IE_NLT
;
1197 h
->got
.refcount
+= 1;
1198 old_tls_type
= elf_s390_hash_entry(h
)->tls_type
;
1202 local_got_refcounts
[r_symndx
] += 1;
1203 old_tls_type
= elf_s390_local_got_tls_type (abfd
) [r_symndx
];
1205 /* If a TLS symbol is accessed using IE at least once,
1206 there is no point to use dynamic model for it. */
1207 if (old_tls_type
!= tls_type
&& old_tls_type
!= GOT_UNKNOWN
)
1209 if (old_tls_type
== GOT_NORMAL
|| tls_type
== GOT_NORMAL
)
1211 (*_bfd_error_handler
)
1212 (_("%B: `%s' accessed both as normal and thread local symbol"),
1213 abfd
, h
->root
.root
.string
);
1216 if (old_tls_type
> tls_type
)
1217 tls_type
= old_tls_type
;
1220 if (old_tls_type
!= tls_type
)
1223 elf_s390_hash_entry (h
)->tls_type
= tls_type
;
1225 elf_s390_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
1228 if (r_type
!= R_390_TLS_IE32
)
1232 case R_390_TLS_LE32
:
1235 info
->flags
|= DF_STATIC_TLS
;
1245 if (h
!= NULL
&& !info
->shared
)
1247 /* If this reloc is in a read-only section, we might
1248 need a copy reloc. We can't check reliably at this
1249 stage whether the section is read-only, as input
1250 sections have not yet been mapped to output sections.
1251 Tentatively set the flag for now, and correct in
1252 adjust_dynamic_symbol. */
1255 /* We may need a .plt entry if the function this reloc
1256 refers to is in a shared lib. */
1257 h
->plt
.refcount
+= 1;
1260 /* If we are creating a shared library, and this is a reloc
1261 against a global symbol, or a non PC relative reloc
1262 against a local symbol, then we need to copy the reloc
1263 into the shared library. However, if we are linking with
1264 -Bsymbolic, we do not need to copy a reloc against a
1265 global symbol which is defined in an object we are
1266 including in the link (i.e., DEF_REGULAR is set). At
1267 this point we have not seen all the input files, so it is
1268 possible that DEF_REGULAR is not set now but will be set
1269 later (it is never cleared). In case of a weak definition,
1270 DEF_REGULAR may be cleared later by a strong definition in
1271 a shared library. We account for that possibility below by
1272 storing information in the relocs_copied field of the hash
1273 table entry. A similar situation occurs when creating
1274 shared libraries and symbol visibility changes render the
1277 If on the other hand, we are creating an executable, we
1278 may need to keep relocations for symbols satisfied by a
1279 dynamic library if we manage to avoid copy relocs for the
1282 && (sec
->flags
& SEC_ALLOC
) != 0
1283 && ((ELF32_R_TYPE (rel
->r_info
) != R_390_PC16
1284 && ELF32_R_TYPE (rel
->r_info
) != R_390_PC16DBL
1285 && ELF32_R_TYPE (rel
->r_info
) != R_390_PC32DBL
1286 && ELF32_R_TYPE (rel
->r_info
) != R_390_PC32
)
1288 && (! SYMBOLIC_BIND (info
, h
)
1289 || h
->root
.type
== bfd_link_hash_defweak
1290 || !h
->def_regular
))))
1291 || (ELIMINATE_COPY_RELOCS
1293 && (sec
->flags
& SEC_ALLOC
) != 0
1295 && (h
->root
.type
== bfd_link_hash_defweak
1296 || !h
->def_regular
)))
1298 struct elf_dyn_relocs
*p
;
1299 struct elf_dyn_relocs
**head
;
1301 /* We must copy these reloc types into the output file.
1302 Create a reloc section in dynobj and make room for
1306 if (htab
->elf
.dynobj
== NULL
)
1307 htab
->elf
.dynobj
= abfd
;
1309 sreloc
= _bfd_elf_make_dynamic_reloc_section
1310 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
1316 /* If this is a global symbol, we count the number of
1317 relocations we need for this symbol. */
1320 head
= &((struct elf_s390_link_hash_entry
*) h
)->dyn_relocs
;
1324 /* Track dynamic relocs needed for local syms too.
1325 We really need local syms available to do this
1329 Elf_Internal_Sym
*isym
;
1331 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
1336 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
1340 vpp
= &elf_section_data (s
)->local_dynrel
;
1341 head
= (struct elf_dyn_relocs
**) vpp
;
1345 if (p
== NULL
|| p
->sec
!= sec
)
1347 bfd_size_type amt
= sizeof *p
;
1349 p
= ((struct elf_dyn_relocs
*)
1350 bfd_alloc (htab
->elf
.dynobj
, amt
));
1361 if (ELF32_R_TYPE (rel
->r_info
) == R_390_PC16
1362 || ELF32_R_TYPE (rel
->r_info
) == R_390_PC16DBL
1363 || ELF32_R_TYPE (rel
->r_info
) == R_390_PC32DBL
1364 || ELF32_R_TYPE (rel
->r_info
) == R_390_PC32
)
1369 /* This relocation describes the C++ object vtable hierarchy.
1370 Reconstruct it for later use during GC. */
1371 case R_390_GNU_VTINHERIT
:
1372 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1376 /* This relocation describes which C++ vtable entries are actually
1377 used. Record for later use during GC. */
1378 case R_390_GNU_VTENTRY
:
1379 BFD_ASSERT (h
!= NULL
);
1381 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1393 /* Return the section that should be marked against GC for a given
1397 elf_s390_gc_mark_hook (asection
*sec
,
1398 struct bfd_link_info
*info
,
1399 Elf_Internal_Rela
*rel
,
1400 struct elf_link_hash_entry
*h
,
1401 Elf_Internal_Sym
*sym
)
1404 switch (ELF32_R_TYPE (rel
->r_info
))
1406 case R_390_GNU_VTINHERIT
:
1407 case R_390_GNU_VTENTRY
:
1410 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1414 /* Update the got entry reference counts for the section being removed. */
1417 elf_s390_gc_sweep_hook (bfd
*abfd
,
1418 struct bfd_link_info
*info
,
1420 const Elf_Internal_Rela
*relocs
)
1422 Elf_Internal_Shdr
*symtab_hdr
;
1423 struct elf_link_hash_entry
**sym_hashes
;
1424 bfd_signed_vma
*local_got_refcounts
;
1425 const Elf_Internal_Rela
*rel
, *relend
;
1427 if (info
->relocatable
)
1430 elf_section_data (sec
)->local_dynrel
= NULL
;
1432 symtab_hdr
= &elf_symtab_hdr (abfd
);
1433 sym_hashes
= elf_sym_hashes (abfd
);
1434 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1436 relend
= relocs
+ sec
->reloc_count
;
1437 for (rel
= relocs
; rel
< relend
; rel
++)
1439 unsigned long r_symndx
;
1440 unsigned int r_type
;
1441 struct elf_link_hash_entry
*h
= NULL
;
1443 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1444 if (r_symndx
>= symtab_hdr
->sh_info
)
1446 struct elf_s390_link_hash_entry
*eh
;
1447 struct elf_dyn_relocs
**pp
;
1448 struct elf_dyn_relocs
*p
;
1450 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1451 while (h
->root
.type
== bfd_link_hash_indirect
1452 || h
->root
.type
== bfd_link_hash_warning
)
1453 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1454 eh
= (struct elf_s390_link_hash_entry
*) h
;
1456 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
1459 /* Everything must go for SEC. */
1465 r_type
= ELF32_R_TYPE (rel
->r_info
);
1466 r_type
= elf_s390_tls_transition (info
, r_type
, h
!= NULL
);
1469 case R_390_TLS_LDM32
:
1470 if (elf_s390_hash_table (info
)->tls_ldm_got
.refcount
> 0)
1471 elf_s390_hash_table (info
)->tls_ldm_got
.refcount
-= 1;
1474 case R_390_TLS_GD32
:
1475 case R_390_TLS_IE32
:
1476 case R_390_TLS_GOTIE12
:
1477 case R_390_TLS_GOTIE20
:
1478 case R_390_TLS_GOTIE32
:
1479 case R_390_TLS_IEENT
:
1484 case R_390_GOTOFF16
:
1485 case R_390_GOTOFF32
:
1487 case R_390_GOTPCDBL
:
1491 if (h
->got
.refcount
> 0)
1492 h
->got
.refcount
-= 1;
1494 else if (local_got_refcounts
!= NULL
)
1496 if (local_got_refcounts
[r_symndx
] > 0)
1497 local_got_refcounts
[r_symndx
] -= 1;
1514 case R_390_PLT16DBL
:
1515 case R_390_PLT32DBL
:
1517 case R_390_PLTOFF16
:
1518 case R_390_PLTOFF32
:
1521 if (h
->plt
.refcount
> 0)
1522 h
->plt
.refcount
-= 1;
1526 case R_390_GOTPLT12
:
1527 case R_390_GOTPLT16
:
1528 case R_390_GOTPLT20
:
1529 case R_390_GOTPLT32
:
1530 case R_390_GOTPLTENT
:
1533 if (h
->plt
.refcount
> 0)
1535 ((struct elf_s390_link_hash_entry
*) h
)->gotplt_refcount
--;
1536 h
->plt
.refcount
-= 1;
1539 else if (local_got_refcounts
!= NULL
)
1541 if (local_got_refcounts
[r_symndx
] > 0)
1542 local_got_refcounts
[r_symndx
] -= 1;
1554 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1555 entry but we found we will not create any. Called when we find we will
1556 not have any PLT for this symbol, by for example
1557 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1558 or elf_s390_size_dynamic_sections if no dynamic sections will be
1559 created (we're only linking static objects). */
1562 elf_s390_adjust_gotplt (h
)
1563 struct elf_s390_link_hash_entry
*h
;
1565 if (h
->elf
.root
.type
== bfd_link_hash_warning
)
1566 h
= (struct elf_s390_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
1568 if (h
->gotplt_refcount
<= 0)
1571 /* We simply add the number of gotplt references to the number
1572 * of got references for this symbol. */
1573 h
->elf
.got
.refcount
+= h
->gotplt_refcount
;
1574 h
->gotplt_refcount
= -1;
1577 /* Adjust a symbol defined by a dynamic object and referenced by a
1578 regular object. The current definition is in some section of the
1579 dynamic object, but we're not including those sections. We have to
1580 change the definition to something the rest of the link can
1584 elf_s390_adjust_dynamic_symbol (info
, h
)
1585 struct bfd_link_info
*info
;
1586 struct elf_link_hash_entry
*h
;
1588 struct elf_s390_link_hash_table
*htab
;
1591 /* If this is a function, put it in the procedure linkage table. We
1592 will fill in the contents of the procedure linkage table later
1593 (although we could actually do it here). */
1594 if (h
->type
== STT_FUNC
1597 if (h
->plt
.refcount
<= 0
1598 || SYMBOL_CALLS_LOCAL (info
, h
)
1599 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
1600 && h
->root
.type
!= bfd_link_hash_undefweak
))
1602 /* This case can occur if we saw a PLT32 reloc in an input
1603 file, but the symbol was never referred to by a dynamic
1604 object, or if all references were garbage collected. In
1605 such a case, we don't actually need to build a procedure
1606 linkage table, and we can just do a PC32 reloc instead. */
1607 h
->plt
.offset
= (bfd_vma
) -1;
1609 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1615 /* It's possible that we incorrectly decided a .plt reloc was
1616 needed for an R_390_PC32 reloc to a non-function sym in
1617 check_relocs. We can't decide accurately between function and
1618 non-function syms in check-relocs; Objects loaded later in
1619 the link may change h->type. So fix it now. */
1620 h
->plt
.offset
= (bfd_vma
) -1;
1622 /* If this is a weak symbol, and there is a real definition, the
1623 processor independent code will have arranged for us to see the
1624 real definition first, and we can just use the same value. */
1625 if (h
->u
.weakdef
!= NULL
)
1627 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
1628 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
1629 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
1630 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
1631 if (ELIMINATE_COPY_RELOCS
|| info
->nocopyreloc
)
1632 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
1636 /* This is a reference to a symbol defined by a dynamic object which
1637 is not a function. */
1639 /* If we are creating a shared library, we must presume that the
1640 only references to the symbol are via the global offset table.
1641 For such cases we need not do anything here; the relocations will
1642 be handled correctly by relocate_section. */
1646 /* If there are no references to this symbol that do not use the
1647 GOT, we don't need to generate a copy reloc. */
1648 if (!h
->non_got_ref
)
1651 /* If -z nocopyreloc was given, we won't generate them either. */
1652 if (info
->nocopyreloc
)
1658 if (ELIMINATE_COPY_RELOCS
)
1660 struct elf_s390_link_hash_entry
* eh
;
1661 struct elf_dyn_relocs
*p
;
1663 eh
= (struct elf_s390_link_hash_entry
*) h
;
1664 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1666 s
= p
->sec
->output_section
;
1667 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1671 /* If we didn't find any dynamic relocs in read-only sections, then
1672 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1680 /* We must allocate the symbol in our .dynbss section, which will
1681 become part of the .bss section of the executable. There will be
1682 an entry for this symbol in the .dynsym section. The dynamic
1683 object will contain position independent code, so all references
1684 from the dynamic object to this symbol will go through the global
1685 offset table. The dynamic linker will use the .dynsym entry to
1686 determine the address it must put in the global offset table, so
1687 both the dynamic object and the regular object will refer to the
1688 same memory location for the variable. */
1690 htab
= elf_s390_hash_table (info
);
1692 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1693 copy the initial value out of the dynamic object and into the
1694 runtime process image. */
1695 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
1697 htab
->srelbss
->size
+= sizeof (Elf32_External_Rela
);
1703 return _bfd_elf_adjust_dynamic_copy (h
, s
);
1706 /* Allocate space in .plt, .got and associated reloc sections for
1710 allocate_dynrelocs (h
, inf
)
1711 struct elf_link_hash_entry
*h
;
1714 struct bfd_link_info
*info
;
1715 struct elf_s390_link_hash_table
*htab
;
1716 struct elf_s390_link_hash_entry
*eh
;
1717 struct elf_dyn_relocs
*p
;
1719 if (h
->root
.type
== bfd_link_hash_indirect
)
1722 info
= (struct bfd_link_info
*) inf
;
1723 htab
= elf_s390_hash_table (info
);
1725 if (htab
->elf
.dynamic_sections_created
1726 && h
->plt
.refcount
> 0)
1728 /* Make sure this symbol is output as a dynamic symbol.
1729 Undefined weak syms won't yet be marked as dynamic. */
1730 if (h
->dynindx
== -1
1731 && !h
->forced_local
)
1733 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1738 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
1740 asection
*s
= htab
->splt
;
1742 /* If this is the first .plt entry, make room for the special
1745 s
->size
+= PLT_FIRST_ENTRY_SIZE
;
1747 h
->plt
.offset
= s
->size
;
1749 /* If this symbol is not defined in a regular file, and we are
1750 not generating a shared library, then set the symbol to this
1751 location in the .plt. This is required to make function
1752 pointers compare as equal between the normal executable and
1753 the shared library. */
1757 h
->root
.u
.def
.section
= s
;
1758 h
->root
.u
.def
.value
= h
->plt
.offset
;
1761 /* Make room for this entry. */
1762 s
->size
+= PLT_ENTRY_SIZE
;
1764 /* We also need to make an entry in the .got.plt section, which
1765 will be placed in the .got section by the linker script. */
1766 htab
->sgotplt
->size
+= GOT_ENTRY_SIZE
;
1768 /* We also need to make an entry in the .rela.plt section. */
1769 htab
->srelplt
->size
+= sizeof (Elf32_External_Rela
);
1773 h
->plt
.offset
= (bfd_vma
) -1;
1775 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1780 h
->plt
.offset
= (bfd_vma
) -1;
1782 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1785 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1786 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1787 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1788 we can save the dynamic TLS relocation. */
1789 if (h
->got
.refcount
> 0
1792 && elf_s390_hash_entry(h
)->tls_type
>= GOT_TLS_IE
)
1794 if (elf_s390_hash_entry(h
)->tls_type
== GOT_TLS_IE_NLT
)
1795 /* For the GOTIE access without a literal pool entry the offset has
1796 to be stored somewhere. The immediate value in the instruction
1797 is not bit enough so the value is stored in the got. */
1799 h
->got
.offset
= htab
->sgot
->size
;
1800 htab
->sgot
->size
+= GOT_ENTRY_SIZE
;
1803 h
->got
.offset
= (bfd_vma
) -1;
1805 else if (h
->got
.refcount
> 0)
1809 int tls_type
= elf_s390_hash_entry(h
)->tls_type
;
1811 /* Make sure this symbol is output as a dynamic symbol.
1812 Undefined weak syms won't yet be marked as dynamic. */
1813 if (h
->dynindx
== -1
1814 && !h
->forced_local
)
1816 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1821 h
->got
.offset
= s
->size
;
1822 s
->size
+= GOT_ENTRY_SIZE
;
1823 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1824 if (tls_type
== GOT_TLS_GD
)
1825 s
->size
+= GOT_ENTRY_SIZE
;
1826 dyn
= htab
->elf
.dynamic_sections_created
;
1827 /* R_390_TLS_IE32 needs one dynamic relocation,
1828 R_390_TLS_GD32 needs one if local symbol and two if global. */
1829 if ((tls_type
== GOT_TLS_GD
&& h
->dynindx
== -1)
1830 || tls_type
>= GOT_TLS_IE
)
1831 htab
->srelgot
->size
+= sizeof (Elf32_External_Rela
);
1832 else if (tls_type
== GOT_TLS_GD
)
1833 htab
->srelgot
->size
+= 2 * sizeof (Elf32_External_Rela
);
1834 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
1835 || h
->root
.type
!= bfd_link_hash_undefweak
)
1837 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
1838 htab
->srelgot
->size
+= sizeof (Elf32_External_Rela
);
1841 h
->got
.offset
= (bfd_vma
) -1;
1843 eh
= (struct elf_s390_link_hash_entry
*) h
;
1844 if (eh
->dyn_relocs
== NULL
)
1847 /* In the shared -Bsymbolic case, discard space allocated for
1848 dynamic pc-relative relocs against symbols which turn out to be
1849 defined in regular objects. For the normal shared case, discard
1850 space for pc-relative relocs that have become local due to symbol
1851 visibility changes. */
1855 if (SYMBOL_CALLS_LOCAL (info
, h
))
1857 struct elf_dyn_relocs
**pp
;
1859 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
1861 p
->count
-= p
->pc_count
;
1870 /* Also discard relocs on undefined weak syms with non-default
1872 if (eh
->dyn_relocs
!= NULL
1873 && h
->root
.type
== bfd_link_hash_undefweak
)
1875 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
1876 eh
->dyn_relocs
= NULL
;
1878 /* Make sure undefined weak symbols are output as a dynamic
1880 else if (h
->dynindx
== -1
1881 && !h
->forced_local
)
1883 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1888 else if (ELIMINATE_COPY_RELOCS
)
1890 /* For the non-shared case, discard space for relocs against
1891 symbols which turn out to need copy relocs or are not
1897 || (htab
->elf
.dynamic_sections_created
1898 && (h
->root
.type
== bfd_link_hash_undefweak
1899 || h
->root
.type
== bfd_link_hash_undefined
))))
1901 /* Make sure this symbol is output as a dynamic symbol.
1902 Undefined weak syms won't yet be marked as dynamic. */
1903 if (h
->dynindx
== -1
1904 && !h
->forced_local
)
1906 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1910 /* If that succeeded, we know we'll be keeping all the
1912 if (h
->dynindx
!= -1)
1916 eh
->dyn_relocs
= NULL
;
1921 /* Finally, allocate space. */
1922 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1924 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
1926 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
1932 /* Find any dynamic relocs that apply to read-only sections. */
1935 readonly_dynrelocs (h
, inf
)
1936 struct elf_link_hash_entry
*h
;
1939 struct elf_s390_link_hash_entry
*eh
;
1940 struct elf_dyn_relocs
*p
;
1942 eh
= (struct elf_s390_link_hash_entry
*) h
;
1943 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1945 asection
*s
= p
->sec
->output_section
;
1947 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1949 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
1951 info
->flags
|= DF_TEXTREL
;
1953 /* Not an error, just cut short the traversal. */
1960 /* Set the sizes of the dynamic sections. */
1963 elf_s390_size_dynamic_sections (output_bfd
, info
)
1964 bfd
*output_bfd ATTRIBUTE_UNUSED
;
1965 struct bfd_link_info
*info
;
1967 struct elf_s390_link_hash_table
*htab
;
1973 htab
= elf_s390_hash_table (info
);
1974 dynobj
= htab
->elf
.dynobj
;
1978 if (htab
->elf
.dynamic_sections_created
)
1980 /* Set the contents of the .interp section to the interpreter. */
1981 if (info
->executable
)
1983 s
= bfd_get_section_by_name (dynobj
, ".interp");
1986 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1987 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1991 /* Set up .got offsets for local syms, and space for local dynamic
1993 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
1995 bfd_signed_vma
*local_got
;
1996 bfd_signed_vma
*end_local_got
;
1997 char *local_tls_type
;
1998 bfd_size_type locsymcount
;
1999 Elf_Internal_Shdr
*symtab_hdr
;
2002 if (! is_s390_elf (ibfd
))
2005 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2007 struct elf_dyn_relocs
*p
;
2009 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
2011 if (!bfd_is_abs_section (p
->sec
)
2012 && bfd_is_abs_section (p
->sec
->output_section
))
2014 /* Input section has been discarded, either because
2015 it is a copy of a linkonce section or due to
2016 linker script /DISCARD/, so we'll be discarding
2019 else if (p
->count
!= 0)
2021 srela
= elf_section_data (p
->sec
)->sreloc
;
2022 srela
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2023 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2024 info
->flags
|= DF_TEXTREL
;
2029 local_got
= elf_local_got_refcounts (ibfd
);
2033 symtab_hdr
= &elf_symtab_hdr (ibfd
);
2034 locsymcount
= symtab_hdr
->sh_info
;
2035 end_local_got
= local_got
+ locsymcount
;
2036 local_tls_type
= elf_s390_local_got_tls_type (ibfd
);
2038 srela
= htab
->srelgot
;
2039 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
2043 *local_got
= s
->size
;
2044 s
->size
+= GOT_ENTRY_SIZE
;
2045 if (*local_tls_type
== GOT_TLS_GD
)
2046 s
->size
+= GOT_ENTRY_SIZE
;
2048 srela
->size
+= sizeof (Elf32_External_Rela
);
2051 *local_got
= (bfd_vma
) -1;
2055 if (htab
->tls_ldm_got
.refcount
> 0)
2057 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2059 htab
->tls_ldm_got
.offset
= htab
->sgot
->size
;
2060 htab
->sgot
->size
+= 2 * GOT_ENTRY_SIZE
;
2061 htab
->srelgot
->size
+= sizeof (Elf32_External_Rela
);
2064 htab
->tls_ldm_got
.offset
= -1;
2066 /* Allocate global sym .plt and .got entries, and space for global
2067 sym dynamic relocs. */
2068 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, (PTR
) info
);
2070 /* We now have determined the sizes of the various dynamic sections.
2071 Allocate memory for them. */
2073 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2075 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2080 || s
== htab
->sgotplt
2081 || s
== htab
->sdynbss
)
2083 /* Strip this section if we don't need it; see the
2086 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
2091 /* We use the reloc_count field as a counter if we need
2092 to copy relocs into the output file. */
2097 /* It's not one of our sections, so don't allocate space. */
2103 /* If we don't need this section, strip it from the
2104 output file. This is to handle .rela.bss and
2105 .rela.plt. We must create it in
2106 create_dynamic_sections, because it must be created
2107 before the linker maps input sections to output
2108 sections. The linker does that before
2109 adjust_dynamic_symbol is called, and it is that
2110 function which decides whether anything needs to go
2111 into these sections. */
2113 s
->flags
|= SEC_EXCLUDE
;
2117 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2120 /* Allocate memory for the section contents. We use bfd_zalloc
2121 here in case unused entries are not reclaimed before the
2122 section's contents are written out. This should not happen,
2123 but this way if it does, we get a R_390_NONE reloc instead
2125 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
2126 if (s
->contents
== NULL
)
2130 if (htab
->elf
.dynamic_sections_created
)
2132 /* Add some entries to the .dynamic section. We fill in the
2133 values later, in elf_s390_finish_dynamic_sections, but we
2134 must add the entries now so that we get the correct size for
2135 the .dynamic section. The DT_DEBUG entry is filled in by the
2136 dynamic linker and used by the debugger. */
2137 #define add_dynamic_entry(TAG, VAL) \
2138 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2140 if (info
->executable
)
2142 if (!add_dynamic_entry (DT_DEBUG
, 0))
2146 if (htab
->splt
->size
!= 0)
2148 if (!add_dynamic_entry (DT_PLTGOT
, 0)
2149 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
2150 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2151 || !add_dynamic_entry (DT_JMPREL
, 0))
2157 if (!add_dynamic_entry (DT_RELA
, 0)
2158 || !add_dynamic_entry (DT_RELASZ
, 0)
2159 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
2162 /* If any dynamic relocs apply to a read-only section,
2163 then we need a DT_TEXTREL entry. */
2164 if ((info
->flags
& DF_TEXTREL
) == 0)
2165 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
,
2168 if ((info
->flags
& DF_TEXTREL
) != 0)
2170 if (!add_dynamic_entry (DT_TEXTREL
, 0))
2175 #undef add_dynamic_entry
2180 /* Return the base VMA address which should be subtracted from real addresses
2181 when resolving @dtpoff relocation.
2182 This is PT_TLS segment p_vaddr. */
2186 struct bfd_link_info
*info
;
2188 /* If tls_sec is NULL, we should have signalled an error already. */
2189 if (elf_hash_table (info
)->tls_sec
== NULL
)
2191 return elf_hash_table (info
)->tls_sec
->vma
;
2194 /* Return the relocation value for @tpoff relocation
2195 if STT_TLS virtual address is ADDRESS. */
2198 tpoff (info
, address
)
2199 struct bfd_link_info
*info
;
2202 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
2204 /* If tls_sec is NULL, we should have signalled an error already. */
2205 if (htab
->tls_sec
== NULL
)
2207 return htab
->tls_size
+ htab
->tls_sec
->vma
- address
;
2210 /* Complain if TLS instruction relocation is against an invalid
2214 invalid_tls_insn (input_bfd
, input_section
, rel
)
2216 asection
*input_section
;
2217 Elf_Internal_Rela
*rel
;
2219 reloc_howto_type
*howto
;
2221 howto
= elf_howto_table
+ ELF32_R_TYPE (rel
->r_info
);
2222 (*_bfd_error_handler
)
2223 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2226 (long) rel
->r_offset
,
2228 bfd_set_error (bfd_error_bad_value
);
2231 /* Relocate a 390 ELF section. */
2234 elf_s390_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
2235 contents
, relocs
, local_syms
, local_sections
)
2237 struct bfd_link_info
*info
;
2239 asection
*input_section
;
2241 Elf_Internal_Rela
*relocs
;
2242 Elf_Internal_Sym
*local_syms
;
2243 asection
**local_sections
;
2245 struct elf_s390_link_hash_table
*htab
;
2246 Elf_Internal_Shdr
*symtab_hdr
;
2247 struct elf_link_hash_entry
**sym_hashes
;
2248 bfd_vma
*local_got_offsets
;
2249 Elf_Internal_Rela
*rel
;
2250 Elf_Internal_Rela
*relend
;
2252 BFD_ASSERT (is_s390_elf (input_bfd
));
2254 htab
= elf_s390_hash_table (info
);
2255 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
2256 sym_hashes
= elf_sym_hashes (input_bfd
);
2257 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2260 relend
= relocs
+ input_section
->reloc_count
;
2261 for (; rel
< relend
; rel
++)
2263 unsigned int r_type
;
2264 reloc_howto_type
*howto
;
2265 unsigned long r_symndx
;
2266 struct elf_link_hash_entry
*h
;
2267 Elf_Internal_Sym
*sym
;
2271 bfd_boolean unresolved_reloc
;
2272 bfd_reloc_status_type r
;
2275 r_type
= ELF32_R_TYPE (rel
->r_info
);
2276 if (r_type
== (int) R_390_GNU_VTINHERIT
2277 || r_type
== (int) R_390_GNU_VTENTRY
)
2279 if (r_type
>= (int) R_390_max
)
2281 bfd_set_error (bfd_error_bad_value
);
2285 howto
= elf_howto_table
+ r_type
;
2286 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2291 unresolved_reloc
= FALSE
;
2292 if (r_symndx
< symtab_hdr
->sh_info
)
2294 sym
= local_syms
+ r_symndx
;
2295 sec
= local_sections
[r_symndx
];
2296 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2300 bfd_boolean warned ATTRIBUTE_UNUSED
;
2302 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2303 r_symndx
, symtab_hdr
, sym_hashes
,
2305 unresolved_reloc
, warned
);
2308 if (sec
!= NULL
&& elf_discarded_section (sec
))
2309 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2310 rel
, relend
, howto
, contents
);
2312 if (info
->relocatable
)
2317 case R_390_GOTPLT12
:
2318 case R_390_GOTPLT16
:
2319 case R_390_GOTPLT20
:
2320 case R_390_GOTPLT32
:
2321 case R_390_GOTPLTENT
:
2322 /* There are three cases for a GOTPLT relocation. 1) The
2323 relocation is against the jump slot entry of a plt that
2324 will get emitted to the output file. 2) The relocation
2325 is against the jump slot of a plt entry that has been
2326 removed. elf_s390_adjust_gotplt has created a GOT entry
2327 as replacement. 3) The relocation is against a local symbol.
2328 Cases 2) and 3) are the same as the GOT relocation code
2329 so we just have to test for case 1 and fall through for
2331 if (h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
2336 Current offset - size first entry / entry size. */
2337 plt_index
= (h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
) /
2340 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
2342 relocation
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
2343 unresolved_reloc
= FALSE
;
2345 if (r_type
== R_390_GOTPLTENT
)
2346 relocation
+= htab
->sgot
->output_section
->vma
;
2356 /* Relocation is to the entry for this symbol in the global
2358 if (htab
->sgot
== NULL
)
2365 off
= h
->got
.offset
;
2366 dyn
= htab
->elf
.dynamic_sections_created
;
2367 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
2369 && SYMBOL_REFERENCES_LOCAL (info
, h
))
2370 || (ELF_ST_VISIBILITY (h
->other
)
2371 && h
->root
.type
== bfd_link_hash_undefweak
))
2373 /* This is actually a static link, or it is a
2374 -Bsymbolic link and the symbol is defined
2375 locally, or the symbol was forced to be local
2376 because of a version file. We must initialize
2377 this entry in the global offset table. Since the
2378 offset must always be a multiple of 2, we use the
2379 least significant bit to record whether we have
2380 initialized it already.
2382 When doing a dynamic link, we create a .rel.got
2383 relocation entry to initialize the value. This
2384 is done in the finish_dynamic_symbol routine. */
2389 bfd_put_32 (output_bfd
, relocation
,
2390 htab
->sgot
->contents
+ off
);
2395 unresolved_reloc
= FALSE
;
2399 if (local_got_offsets
== NULL
)
2402 off
= local_got_offsets
[r_symndx
];
2404 /* The offset must always be a multiple of 4. We use
2405 the least significant bit to record whether we have
2406 already generated the necessary reloc. */
2411 bfd_put_32 (output_bfd
, relocation
,
2412 htab
->sgot
->contents
+ off
);
2417 Elf_Internal_Rela outrel
;
2420 srelgot
= htab
->srelgot
;
2421 if (srelgot
== NULL
)
2424 outrel
.r_offset
= (htab
->sgot
->output_section
->vma
2425 + htab
->sgot
->output_offset
2427 outrel
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
2428 outrel
.r_addend
= relocation
;
2429 loc
= srelgot
->contents
;
2430 loc
+= srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
2431 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
2434 local_got_offsets
[r_symndx
] |= 1;
2438 if (off
>= (bfd_vma
) -2)
2441 relocation
= htab
->sgot
->output_offset
+ off
;
2443 /* For @GOTENT the relocation is against the offset between
2444 the instruction and the symbols entry in the GOT and not
2445 between the start of the GOT and the symbols entry. We
2446 add the vma of the GOT to get the correct value. */
2447 if ( r_type
== R_390_GOTENT
2448 || r_type
== R_390_GOTPLTENT
)
2449 relocation
+= htab
->sgot
->output_section
->vma
;
2453 case R_390_GOTOFF16
:
2454 case R_390_GOTOFF32
:
2455 /* Relocation is relative to the start of the global offset
2458 /* Note that sgot->output_offset is not involved in this
2459 calculation. We always want the start of .got. If we
2460 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2461 permitted by the ABI, we might have to change this
2463 relocation
-= htab
->sgot
->output_section
->vma
;
2467 case R_390_GOTPCDBL
:
2468 /* Use global offset table as symbol value. */
2469 relocation
= htab
->sgot
->output_section
->vma
;
2470 unresolved_reloc
= FALSE
;
2473 case R_390_PLT16DBL
:
2474 case R_390_PLT32DBL
:
2476 /* Relocation is to the entry for this symbol in the
2477 procedure linkage table. */
2479 /* Resolve a PLT32 reloc against a local symbol directly,
2480 without using the procedure linkage table. */
2484 if (h
->plt
.offset
== (bfd_vma
) -1
2485 || htab
->splt
== NULL
)
2487 /* We didn't make a PLT entry for this symbol. This
2488 happens when statically linking PIC code, or when
2489 using -Bsymbolic. */
2493 relocation
= (htab
->splt
->output_section
->vma
2494 + htab
->splt
->output_offset
2496 unresolved_reloc
= FALSE
;
2499 case R_390_PLTOFF16
:
2500 case R_390_PLTOFF32
:
2501 /* Relocation is to the entry for this symbol in the
2502 procedure linkage table relative to the start of the GOT. */
2504 /* For local symbols or if we didn't make a PLT entry for
2505 this symbol resolve the symbol directly. */
2507 || h
->plt
.offset
== (bfd_vma
) -1
2508 || htab
->splt
== NULL
)
2510 relocation
-= htab
->sgot
->output_section
->vma
;
2514 relocation
= (htab
->splt
->output_section
->vma
2515 + htab
->splt
->output_offset
2517 - htab
->sgot
->output_section
->vma
);
2518 unresolved_reloc
= FALSE
;
2528 if ((input_section
->flags
& SEC_ALLOC
) == 0)
2533 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2534 || h
->root
.type
!= bfd_link_hash_undefweak
)
2535 && ((r_type
!= R_390_PC16
2536 && r_type
!= R_390_PC16DBL
2537 && r_type
!= R_390_PC32DBL
2538 && r_type
!= R_390_PC32
)
2539 || !SYMBOL_CALLS_LOCAL (info
, h
)))
2540 || (ELIMINATE_COPY_RELOCS
2547 || h
->root
.type
== bfd_link_hash_undefweak
2548 || h
->root
.type
== bfd_link_hash_undefined
)))
2550 Elf_Internal_Rela outrel
;
2551 bfd_boolean skip
, relocate
;
2555 /* When generating a shared object, these relocations
2556 are copied into the output file to be resolved at run
2563 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2565 if (outrel
.r_offset
== (bfd_vma
) -1)
2567 else if (outrel
.r_offset
== (bfd_vma
) -2)
2568 skip
= TRUE
, relocate
= TRUE
;
2569 outrel
.r_offset
+= (input_section
->output_section
->vma
2570 + input_section
->output_offset
);
2573 memset (&outrel
, 0, sizeof outrel
);
2576 && (r_type
== R_390_PC16
2577 || r_type
== R_390_PC16DBL
2578 || r_type
== R_390_PC32DBL
2579 || r_type
== R_390_PC32
2581 || !SYMBOLIC_BIND (info
, h
)
2582 || !h
->def_regular
))
2584 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2585 outrel
.r_addend
= rel
->r_addend
;
2589 /* This symbol is local, or marked to become local. */
2590 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2591 if (r_type
== R_390_32
)
2594 outrel
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
2600 if (bfd_is_abs_section (sec
))
2602 else if (sec
== NULL
|| sec
->owner
== NULL
)
2604 bfd_set_error(bfd_error_bad_value
);
2611 osec
= sec
->output_section
;
2612 sindx
= elf_section_data (osec
)->dynindx
;
2615 osec
= htab
->elf
.text_index_section
;
2616 sindx
= elf_section_data (osec
)->dynindx
;
2618 BFD_ASSERT (sindx
!= 0);
2620 /* We are turning this relocation into one
2621 against a section symbol, so subtract out
2622 the output section's address but not the
2623 offset of the input section in the output
2625 outrel
.r_addend
-= osec
->vma
;
2627 outrel
.r_info
= ELF32_R_INFO (sindx
, r_type
);
2631 sreloc
= elf_section_data (input_section
)->sreloc
;
2635 loc
= sreloc
->contents
;
2636 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
2637 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
2639 /* If this reloc is against an external symbol, we do
2640 not want to fiddle with the addend. Otherwise, we
2641 need to include the symbol value so that it becomes
2642 an addend for the dynamic reloc. */
2648 /* Relocations for tls literal pool entries. */
2649 case R_390_TLS_IE32
:
2652 Elf_Internal_Rela outrel
;
2656 outrel
.r_offset
= rel
->r_offset
2657 + input_section
->output_section
->vma
2658 + input_section
->output_offset
;
2659 outrel
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
2660 sreloc
= elf_section_data (input_section
)->sreloc
;
2663 loc
= sreloc
->contents
;
2664 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
2665 bfd_elf32_swap_reloc_out (output_bfd
, &outrel
, loc
);
2669 case R_390_TLS_GD32
:
2670 case R_390_TLS_GOTIE32
:
2671 r_type
= elf_s390_tls_transition (info
, r_type
, h
== NULL
);
2672 tls_type
= GOT_UNKNOWN
;
2673 if (h
== NULL
&& local_got_offsets
)
2674 tls_type
= elf_s390_local_got_tls_type (input_bfd
) [r_symndx
];
2677 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2678 if (!info
->shared
&& h
->dynindx
== -1 && tls_type
>= GOT_TLS_IE
)
2679 r_type
= R_390_TLS_LE32
;
2681 if (r_type
== R_390_TLS_GD32
&& tls_type
>= GOT_TLS_IE
)
2682 r_type
= R_390_TLS_IE32
;
2684 if (r_type
== R_390_TLS_LE32
)
2686 /* This relocation gets optimized away by the local exec
2687 access optimization. */
2688 BFD_ASSERT (! unresolved_reloc
);
2689 bfd_put_32 (output_bfd
, -tpoff (info
, relocation
),
2690 contents
+ rel
->r_offset
);
2694 if (htab
->sgot
== NULL
)
2698 off
= h
->got
.offset
;
2701 if (local_got_offsets
== NULL
)
2704 off
= local_got_offsets
[r_symndx
];
2713 Elf_Internal_Rela outrel
;
2717 if (htab
->srelgot
== NULL
)
2720 outrel
.r_offset
= (htab
->sgot
->output_section
->vma
2721 + htab
->sgot
->output_offset
+ off
);
2723 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
2724 if (r_type
== R_390_TLS_GD32
)
2725 dr_type
= R_390_TLS_DTPMOD
;
2727 dr_type
= R_390_TLS_TPOFF
;
2728 if (dr_type
== R_390_TLS_TPOFF
&& indx
== 0)
2729 outrel
.r_addend
= relocation
- dtpoff_base (info
);
2731 outrel
.r_addend
= 0;
2732 outrel
.r_info
= ELF32_R_INFO (indx
, dr_type
);
2733 loc
= htab
->srelgot
->contents
;
2734 loc
+= htab
->srelgot
->reloc_count
++
2735 * sizeof (Elf32_External_Rela
);
2736 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
2738 if (r_type
== R_390_TLS_GD32
)
2742 BFD_ASSERT (! unresolved_reloc
);
2743 bfd_put_32 (output_bfd
,
2744 relocation
- dtpoff_base (info
),
2745 htab
->sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
2749 outrel
.r_info
= ELF32_R_INFO (indx
, R_390_TLS_DTPOFF
);
2750 outrel
.r_offset
+= GOT_ENTRY_SIZE
;
2751 outrel
.r_addend
= 0;
2752 htab
->srelgot
->reloc_count
++;
2753 loc
+= sizeof (Elf32_External_Rela
);
2754 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
2761 local_got_offsets
[r_symndx
] |= 1;
2764 if (off
>= (bfd_vma
) -2)
2766 if (r_type
== ELF32_R_TYPE (rel
->r_info
))
2768 relocation
= htab
->sgot
->output_offset
+ off
;
2769 if (r_type
== R_390_TLS_IE32
|| r_type
== R_390_TLS_IEENT
)
2770 relocation
+= htab
->sgot
->output_section
->vma
;
2771 unresolved_reloc
= FALSE
;
2775 bfd_put_32 (output_bfd
, htab
->sgot
->output_offset
+ off
,
2776 contents
+ rel
->r_offset
);
2781 case R_390_TLS_GOTIE12
:
2782 case R_390_TLS_GOTIE20
:
2783 case R_390_TLS_IEENT
:
2786 if (local_got_offsets
== NULL
)
2788 off
= local_got_offsets
[r_symndx
];
2790 goto emit_tls_relocs
;
2794 off
= h
->got
.offset
;
2795 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2796 if (info
->shared
|| h
->dynindx
!= -1 || tls_type
< GOT_TLS_IE
)
2797 goto emit_tls_relocs
;
2800 if (htab
->sgot
== NULL
)
2803 BFD_ASSERT (! unresolved_reloc
);
2804 bfd_put_32 (output_bfd
, -tpoff (info
, relocation
),
2805 htab
->sgot
->contents
+ off
);
2806 relocation
= htab
->sgot
->output_offset
+ off
;
2807 if (r_type
== R_390_TLS_IEENT
)
2808 relocation
+= htab
->sgot
->output_section
->vma
;
2809 unresolved_reloc
= FALSE
;
2812 case R_390_TLS_LDM32
:
2814 /* The literal pool entry this relocation refers to gets ignored
2815 by the optimized code of the local exec model. Do nothing
2816 and the value will turn out zero. */
2819 if (htab
->sgot
== NULL
)
2822 off
= htab
->tls_ldm_got
.offset
;
2827 Elf_Internal_Rela outrel
;
2830 if (htab
->srelgot
== NULL
)
2833 outrel
.r_offset
= (htab
->sgot
->output_section
->vma
2834 + htab
->sgot
->output_offset
+ off
);
2836 bfd_put_32 (output_bfd
, 0,
2837 htab
->sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
2838 outrel
.r_info
= ELF32_R_INFO (0, R_390_TLS_DTPMOD
);
2839 outrel
.r_addend
= 0;
2840 loc
= htab
->srelgot
->contents
;
2841 loc
+= htab
->srelgot
->reloc_count
++
2842 * sizeof (Elf32_External_Rela
);
2843 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
2844 htab
->tls_ldm_got
.offset
|= 1;
2846 relocation
= htab
->sgot
->output_offset
+ off
;
2847 unresolved_reloc
= FALSE
;
2850 case R_390_TLS_LE32
:
2853 /* Linking a shared library with non-fpic code requires
2854 a R_390_TLS_TPOFF relocation. */
2855 Elf_Internal_Rela outrel
;
2860 outrel
.r_offset
= rel
->r_offset
2861 + input_section
->output_section
->vma
2862 + input_section
->output_offset
;
2863 if (h
!= NULL
&& h
->dynindx
!= -1)
2867 outrel
.r_info
= ELF32_R_INFO (indx
, R_390_TLS_TPOFF
);
2869 outrel
.r_addend
= relocation
- dtpoff_base (info
);
2871 outrel
.r_addend
= 0;
2872 sreloc
= elf_section_data (input_section
)->sreloc
;
2875 loc
= sreloc
->contents
;
2876 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
2877 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
2881 BFD_ASSERT (! unresolved_reloc
);
2882 bfd_put_32 (output_bfd
, -tpoff (info
, relocation
),
2883 contents
+ rel
->r_offset
);
2887 case R_390_TLS_LDO32
:
2888 if (info
->shared
|| (input_section
->flags
& SEC_DEBUGGING
))
2889 relocation
-= dtpoff_base (info
);
2891 /* When converting LDO to LE, we must negate. */
2892 relocation
= -tpoff (info
, relocation
);
2895 /* Relocations for tls instructions. */
2896 case R_390_TLS_LOAD
:
2897 case R_390_TLS_GDCALL
:
2898 case R_390_TLS_LDCALL
:
2899 tls_type
= GOT_UNKNOWN
;
2900 if (h
== NULL
&& local_got_offsets
)
2901 tls_type
= elf_s390_local_got_tls_type (input_bfd
) [r_symndx
];
2903 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2905 if (tls_type
== GOT_TLS_GD
)
2908 if (r_type
== R_390_TLS_LOAD
)
2910 if (!info
->shared
&& (h
== NULL
|| h
->dynindx
== -1))
2912 /* IE->LE transition. Four valid cases:
2913 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
2914 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
2915 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
2916 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2917 unsigned int insn
, ry
;
2919 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2921 if ((insn
& 0xff00f000) == 0x58000000)
2922 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
2923 ry
= (insn
& 0x000f0000);
2924 else if ((insn
& 0xff0f0000) == 0x58000000)
2925 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
2926 ry
= (insn
& 0x0000f000) << 4;
2927 else if ((insn
& 0xff00f000) == 0x5800c000)
2928 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
2929 ry
= (insn
& 0x000f0000);
2930 else if ((insn
& 0xff0f0000) == 0x580c0000)
2931 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
2932 ry
= (insn
& 0x0000f000) << 4;
2934 invalid_tls_insn (input_bfd
, input_section
, rel
);
2935 insn
= 0x18000700 | (insn
& 0x00f00000) | ry
;
2936 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
2939 else if (r_type
== R_390_TLS_GDCALL
)
2943 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2944 if ((insn
& 0xff000fff) != 0x4d000000 &&
2945 (insn
& 0xffff0000) != 0xc0e50000 &&
2946 (insn
& 0xff000000) != 0x0d000000)
2947 invalid_tls_insn (input_bfd
, input_section
, rel
);
2948 if (!info
->shared
&& (h
== NULL
|| h
->dynindx
== -1))
2950 if ((insn
& 0xff000000) == 0x0d000000)
2952 /* GD->LE transition.
2953 basr rx, ry -> nopr r7 */
2954 insn
= 0x07070000 | (insn
& 0xffff);
2956 else if ((insn
& 0xff000000) == 0x4d000000)
2958 /* GD->LE transition.
2959 bas %r14,0(%rx,%r13) -> bc 0,0 */
2964 /* GD->LE transition.
2965 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
2967 bfd_put_16 (output_bfd
, 0x0000,
2968 contents
+ rel
->r_offset
+ 4);
2973 /* If basr is used in the pic case to invoke
2974 _tls_get_offset, something went wrong before. */
2975 if ((insn
& 0xff000000) == 0x0d000000)
2976 invalid_tls_insn (input_bfd
, input_section
, rel
);
2978 if ((insn
& 0xff000000) == 0x4d000000)
2980 /* GD->IE transition.
2981 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
2986 /* GD->IE transition.
2987 brasl %r14,__tls_get_addr@plt ->
2988 l %r2,0(%r2,%r12) ; bcr 0,0 */
2990 bfd_put_16 (output_bfd
, 0x0700,
2991 contents
+ rel
->r_offset
+ 4);
2994 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
2996 else if (r_type
== R_390_TLS_LDCALL
)
3002 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
3003 if ((insn
& 0xff000fff) != 0x4d000000 &&
3004 (insn
& 0xffff0000) != 0xc0e50000 &&
3005 (insn
& 0xff000000) != 0x0d000000)
3006 invalid_tls_insn (input_bfd
, input_section
, rel
);
3008 if ((insn
& 0xff000000) == 0x0d000000)
3010 /* LD->LE transition.
3011 basr rx, ry -> nopr r7 */
3012 insn
= 0x07070000 | (insn
& 0xffff);
3014 else if ((insn
& 0xff000000) == 0x4d000000)
3016 /* LD->LE transition.
3017 bas %r14,0(%rx,%r13) -> bc 0,0 */
3022 /* LD->LE transition.
3023 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
3025 bfd_put_16 (output_bfd
, 0x0000,
3026 contents
+ rel
->r_offset
+ 4);
3028 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
3037 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3038 because such sections are not SEC_ALLOC and thus ld.so will
3039 not process them. */
3040 if (unresolved_reloc
3041 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
3043 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
3044 rel
->r_offset
) != (bfd_vma
) -1)
3045 (*_bfd_error_handler
)
3046 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3049 (long) rel
->r_offset
,
3051 h
->root
.root
.string
);
3053 if (r_type
== R_390_20
3054 || r_type
== R_390_GOT20
3055 || r_type
== R_390_GOTPLT20
3056 || r_type
== R_390_TLS_GOTIE20
)
3058 relocation
+= rel
->r_addend
;
3059 relocation
= (relocation
&0xfff) << 8 | (relocation
&0xff000) >> 12;
3060 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3061 contents
, rel
->r_offset
,
3065 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3066 contents
, rel
->r_offset
,
3067 relocation
, rel
->r_addend
);
3069 if (r
!= bfd_reloc_ok
)
3074 name
= h
->root
.root
.string
;
3077 name
= bfd_elf_string_from_elf_section (input_bfd
,
3078 symtab_hdr
->sh_link
,
3083 name
= bfd_section_name (input_bfd
, sec
);
3086 if (r
== bfd_reloc_overflow
)
3089 if (! ((*info
->callbacks
->reloc_overflow
)
3090 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
3091 (bfd_vma
) 0, input_bfd
, input_section
,
3097 (*_bfd_error_handler
)
3098 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3099 input_bfd
, input_section
,
3100 (long) rel
->r_offset
, name
, (int) r
);
3109 /* Finish up dynamic symbol handling. We set the contents of various
3110 dynamic sections here. */
3113 elf_s390_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
3115 struct bfd_link_info
*info
;
3116 struct elf_link_hash_entry
*h
;
3117 Elf_Internal_Sym
*sym
;
3119 struct elf_s390_link_hash_table
*htab
;
3121 htab
= elf_s390_hash_table (info
);
3123 if (h
->plt
.offset
!= (bfd_vma
) -1)
3127 Elf_Internal_Rela rela
;
3129 bfd_vma relative_offset
;
3131 /* This symbol has an entry in the procedure linkage table. Set
3133 if (h
->dynindx
== -1
3134 || htab
->splt
== NULL
3135 || htab
->sgotplt
== NULL
3136 || htab
->srelplt
== NULL
)
3140 Current offset - size first entry / entry size. */
3141 plt_index
= (h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
) / PLT_ENTRY_SIZE
;
3143 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3145 got_offset
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
3147 /* S390 uses halfwords for relative branch calc! */
3148 relative_offset
= - ((PLT_FIRST_ENTRY_SIZE
+
3149 (PLT_ENTRY_SIZE
* plt_index
) + 18) / 2);
3150 /* If offset is > 32768, branch to a previous branch
3151 390 can only handle +-64 K jumps. */
3152 if ( -32768 > (int) relative_offset
)
3154 = -(unsigned) (((65536 / PLT_ENTRY_SIZE
- 1) * PLT_ENTRY_SIZE
) / 2);
3156 /* Fill in the entry in the procedure linkage table. */
3159 memcpy (htab
->splt
->contents
+ h
->plt
.offset
, elf_s390_plt_entry
,
3162 /* Adjust jump to the first plt entry. */
3163 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3164 htab
->splt
->contents
+ h
->plt
.offset
+ 20);
3166 /* Push the GOT offset field. */
3167 bfd_put_32 (output_bfd
,
3168 (htab
->sgotplt
->output_section
->vma
3169 + htab
->sgotplt
->output_offset
3171 htab
->splt
->contents
+ h
->plt
.offset
+ 24);
3173 else if (got_offset
< 4096)
3175 /* The GOT offset is small enough to be used directly as
3177 memcpy (htab
->splt
->contents
+ h
->plt
.offset
,
3178 elf_s390_plt_pic12_entry
,
3181 /* Put in the GOT offset as displacement value. The 0xc000
3182 value comes from the first word of the plt entry. Look
3183 at the elf_s390_plt_pic16_entry content. */
3184 bfd_put_16 (output_bfd
, (bfd_vma
)0xc000 | got_offset
,
3185 htab
->splt
->contents
+ h
->plt
.offset
+ 2);
3187 /* Adjust the jump to the first plt entry. */
3188 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3189 htab
->splt
->contents
+ h
->plt
.offset
+ 20);
3191 else if (got_offset
< 32768)
3193 /* The GOT offset is too big for a displacement but small
3194 enough to be a signed 16 bit immediate value as it can be
3195 used in an lhi instruction. */
3196 memcpy (htab
->splt
->contents
+ h
->plt
.offset
,
3197 elf_s390_plt_pic16_entry
,
3200 /* Put in the GOT offset for the lhi instruction. */
3201 bfd_put_16 (output_bfd
, (bfd_vma
)got_offset
,
3202 htab
->splt
->contents
+ h
->plt
.offset
+ 2);
3204 /* Adjust the jump to the first plt entry. */
3205 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3206 htab
->splt
->contents
+ h
->plt
.offset
+ 20);
3210 memcpy (htab
->splt
->contents
+ h
->plt
.offset
,
3211 elf_s390_plt_pic_entry
,
3214 /* Adjust the jump to the first plt entry. */
3215 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3216 htab
->splt
->contents
+ h
->plt
.offset
+ 20);
3218 /* Push the GOT offset field. */
3219 bfd_put_32 (output_bfd
, got_offset
,
3220 htab
->splt
->contents
+ h
->plt
.offset
+ 24);
3222 /* Insert offset into reloc. table here. */
3223 bfd_put_32 (output_bfd
, plt_index
* sizeof (Elf32_External_Rela
),
3224 htab
->splt
->contents
+ h
->plt
.offset
+ 28);
3226 /* Fill in the entry in the global offset table.
3227 Points to instruction after GOT offset. */
3228 bfd_put_32 (output_bfd
,
3229 (htab
->splt
->output_section
->vma
3230 + htab
->splt
->output_offset
3233 htab
->sgotplt
->contents
+ got_offset
);
3235 /* Fill in the entry in the .rela.plt section. */
3236 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
3237 + htab
->sgotplt
->output_offset
3239 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_JMP_SLOT
);
3241 loc
= htab
->srelplt
->contents
+ plt_index
* sizeof (Elf32_External_Rela
);
3242 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3244 if (!h
->def_regular
)
3246 /* Mark the symbol as undefined, rather than as defined in
3247 the .plt section. Leave the value alone. This is a clue
3248 for the dynamic linker, to make function pointer
3249 comparisons work between an application and shared
3251 sym
->st_shndx
= SHN_UNDEF
;
3255 if (h
->got
.offset
!= (bfd_vma
) -1
3256 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_GD
3257 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_IE
3258 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_IE_NLT
)
3260 Elf_Internal_Rela rela
;
3263 /* This symbol has an entry in the global offset table. Set it
3266 if (htab
->sgot
== NULL
|| htab
->srelgot
== NULL
)
3269 rela
.r_offset
= (htab
->sgot
->output_section
->vma
3270 + htab
->sgot
->output_offset
3271 + (h
->got
.offset
&~ (bfd_vma
) 1));
3273 /* If this is a static link, or it is a -Bsymbolic link and the
3274 symbol is defined locally or was forced to be local because
3275 of a version file, we just want to emit a RELATIVE reloc.
3276 The entry in the global offset table will already have been
3277 initialized in the relocate_section function. */
3279 && SYMBOL_REFERENCES_LOCAL (info
, h
))
3281 if (!h
->def_regular
)
3283 BFD_ASSERT((h
->got
.offset
& 1) != 0);
3284 rela
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
3285 rela
.r_addend
= (h
->root
.u
.def
.value
3286 + h
->root
.u
.def
.section
->output_section
->vma
3287 + h
->root
.u
.def
.section
->output_offset
);
3291 BFD_ASSERT((h
->got
.offset
& 1) == 0);
3292 bfd_put_32 (output_bfd
, (bfd_vma
) 0, htab
->sgot
->contents
+ h
->got
.offset
);
3293 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_GLOB_DAT
);
3297 loc
= htab
->srelgot
->contents
;
3298 loc
+= htab
->srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3299 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3304 Elf_Internal_Rela rela
;
3307 /* This symbols needs a copy reloc. Set it up. */
3309 if (h
->dynindx
== -1
3310 || (h
->root
.type
!= bfd_link_hash_defined
3311 && h
->root
.type
!= bfd_link_hash_defweak
)
3312 || htab
->srelbss
== NULL
)
3315 rela
.r_offset
= (h
->root
.u
.def
.value
3316 + h
->root
.u
.def
.section
->output_section
->vma
3317 + h
->root
.u
.def
.section
->output_offset
);
3318 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_COPY
);
3320 loc
= htab
->srelbss
->contents
;
3321 loc
+= htab
->srelbss
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3322 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3325 /* Mark some specially defined symbols as absolute. */
3326 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
3327 || h
== htab
->elf
.hgot
3328 || h
== htab
->elf
.hplt
)
3329 sym
->st_shndx
= SHN_ABS
;
3334 /* Used to decide how to sort relocs in an optimal manner for the
3335 dynamic linker, before writing them out. */
3337 static enum elf_reloc_type_class
3338 elf_s390_reloc_type_class (rela
)
3339 const Elf_Internal_Rela
*rela
;
3341 switch ((int) ELF32_R_TYPE (rela
->r_info
))
3343 case R_390_RELATIVE
:
3344 return reloc_class_relative
;
3345 case R_390_JMP_SLOT
:
3346 return reloc_class_plt
;
3348 return reloc_class_copy
;
3350 return reloc_class_normal
;
3354 /* Finish up the dynamic sections. */
3357 elf_s390_finish_dynamic_sections (output_bfd
, info
)
3359 struct bfd_link_info
*info
;
3361 struct elf_s390_link_hash_table
*htab
;
3365 htab
= elf_s390_hash_table (info
);
3366 dynobj
= htab
->elf
.dynobj
;
3367 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
3369 if (htab
->elf
.dynamic_sections_created
)
3371 Elf32_External_Dyn
*dyncon
, *dynconend
;
3373 if (sdyn
== NULL
|| htab
->sgot
== NULL
)
3376 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3377 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3378 for (; dyncon
< dynconend
; dyncon
++)
3380 Elf_Internal_Dyn dyn
;
3383 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3391 dyn
.d_un
.d_ptr
= htab
->sgot
->output_section
->vma
;
3395 dyn
.d_un
.d_ptr
= htab
->srelplt
->output_section
->vma
;
3399 s
= htab
->srelplt
->output_section
;
3400 dyn
.d_un
.d_val
= s
->size
;
3404 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3407 /* Fill in the special first entry in the procedure linkage table. */
3408 if (htab
->splt
&& htab
->splt
->size
> 0)
3410 memset (htab
->splt
->contents
, 0, PLT_FIRST_ENTRY_SIZE
);
3413 memcpy (htab
->splt
->contents
, elf_s390_plt_pic_first_entry
,
3414 PLT_FIRST_ENTRY_SIZE
);
3418 memcpy (htab
->splt
->contents
, elf_s390_plt_first_entry
,
3419 PLT_FIRST_ENTRY_SIZE
);
3420 bfd_put_32 (output_bfd
,
3421 htab
->sgotplt
->output_section
->vma
3422 + htab
->sgotplt
->output_offset
,
3423 htab
->splt
->contents
+ 24);
3425 elf_section_data (htab
->splt
->output_section
)
3426 ->this_hdr
.sh_entsize
= 4;
3433 /* Fill in the first three entries in the global offset table. */
3434 if (htab
->sgotplt
->size
> 0)
3436 bfd_put_32 (output_bfd
,
3437 (sdyn
== NULL
? (bfd_vma
) 0
3438 : sdyn
->output_section
->vma
+ sdyn
->output_offset
),
3439 htab
->sgotplt
->contents
);
3440 /* One entry for shared object struct ptr. */
3441 bfd_put_32 (output_bfd
, (bfd_vma
) 0, htab
->sgotplt
->contents
+ 4);
3442 /* One entry for _dl_runtime_resolve. */
3443 bfd_put_32 (output_bfd
, (bfd_vma
) 0, htab
->sgotplt
->contents
+ 8);
3446 elf_section_data (htab
->sgotplt
->output_section
)
3447 ->this_hdr
.sh_entsize
= 4;
3453 elf_s390_grok_prstatus (abfd
, note
)
3455 Elf_Internal_Note
* note
;
3460 switch (note
->descsz
)
3465 case 224: /* S/390 Linux. */
3467 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
3470 elf_tdata (abfd
)->core_lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
3478 /* Make a ".reg/999" section. */
3479 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
3480 size
, note
->descpos
+ offset
);
3483 /* Return address for Ith PLT stub in section PLT, for relocation REL
3484 or (bfd_vma) -1 if it should not be included. */
3487 elf_s390_plt_sym_val (bfd_vma i
, const asection
*plt
,
3488 const arelent
*rel ATTRIBUTE_UNUSED
)
3490 return plt
->vma
+ PLT_FIRST_ENTRY_SIZE
+ i
* PLT_ENTRY_SIZE
;
3494 elf32_s390_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
3496 elf_elfheader (obfd
)->e_flags
|= elf_elfheader (ibfd
)->e_flags
;
3501 #define TARGET_BIG_SYM bfd_elf32_s390_vec
3502 #define TARGET_BIG_NAME "elf32-s390"
3503 #define ELF_ARCH bfd_arch_s390
3504 #define ELF_TARGET_ID S390_ELF_DATA
3505 #define ELF_MACHINE_CODE EM_S390
3506 #define ELF_MACHINE_ALT1 EM_S390_OLD
3507 #define ELF_MAXPAGESIZE 0x1000
3509 #define elf_backend_can_gc_sections 1
3510 #define elf_backend_can_refcount 1
3511 #define elf_backend_want_got_plt 1
3512 #define elf_backend_plt_readonly 1
3513 #define elf_backend_want_plt_sym 0
3514 #define elf_backend_got_header_size 12
3515 #define elf_backend_rela_normal 1
3517 #define elf_info_to_howto elf_s390_info_to_howto
3519 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
3520 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
3521 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3522 #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
3524 #define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
3526 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3527 #define elf_backend_check_relocs elf_s390_check_relocs
3528 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3529 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3530 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3531 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3532 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3533 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3534 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3535 #define elf_backend_relocate_section elf_s390_relocate_section
3536 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3537 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3538 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3539 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
3540 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
3542 #define bfd_elf32_mkobject elf_s390_mkobject
3543 #define elf_backend_object_p elf_s390_object_p
3545 #include "elf32-target.h"