1 /* IBM S/390-specific support for 32-bit ELF
2 Copyright (C) 2000-2015 Free Software Foundation, Inc.
3 Contributed by Carl B. Pedersen and Martin Schwidefsky.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
29 static bfd_reloc_status_type
30 s390_tls_reloc (bfd
*, arelent
*, asymbol
*, void *,
31 asection
*, bfd
*, char **);
32 static bfd_reloc_status_type
33 s390_elf_ldisp_reloc (bfd
*, arelent
*, asymbol
*, void *,
34 asection
*, bfd
*, char **);
36 /* The relocation "howto" table. */
38 static reloc_howto_type elf_howto_table
[] =
40 HOWTO (R_390_NONE
, /* type */
42 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
44 FALSE
, /* pc_relative */
46 complain_overflow_dont
, /* complain_on_overflow */
47 bfd_elf_generic_reloc
, /* special_function */
48 "R_390_NONE", /* name */
49 FALSE
, /* partial_inplace */
52 FALSE
), /* pcrel_offset */
54 HOWTO(R_390_8
, 0, 0, 8, FALSE
, 0, complain_overflow_bitfield
,
55 bfd_elf_generic_reloc
, "R_390_8", FALSE
, 0,0x000000ff, FALSE
),
56 HOWTO(R_390_12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
57 bfd_elf_generic_reloc
, "R_390_12", FALSE
, 0,0x00000fff, FALSE
),
58 HOWTO(R_390_16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
59 bfd_elf_generic_reloc
, "R_390_16", FALSE
, 0,0x0000ffff, FALSE
),
60 HOWTO(R_390_32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
61 bfd_elf_generic_reloc
, "R_390_32", FALSE
, 0,0xffffffff, FALSE
),
62 HOWTO(R_390_PC32
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
63 bfd_elf_generic_reloc
, "R_390_PC32", FALSE
, 0,0xffffffff, TRUE
),
64 HOWTO(R_390_GOT12
, 0, 1, 12, FALSE
, 0, complain_overflow_bitfield
,
65 bfd_elf_generic_reloc
, "R_390_GOT12", FALSE
, 0,0x00000fff, FALSE
),
66 HOWTO(R_390_GOT32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
67 bfd_elf_generic_reloc
, "R_390_GOT32", FALSE
, 0,0xffffffff, FALSE
),
68 HOWTO(R_390_PLT32
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
69 bfd_elf_generic_reloc
, "R_390_PLT32", FALSE
, 0,0xffffffff, TRUE
),
70 HOWTO(R_390_COPY
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
71 bfd_elf_generic_reloc
, "R_390_COPY", FALSE
, 0,0xffffffff, FALSE
),
72 HOWTO(R_390_GLOB_DAT
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
73 bfd_elf_generic_reloc
, "R_390_GLOB_DAT", FALSE
, 0,0xffffffff, FALSE
),
74 HOWTO(R_390_JMP_SLOT
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
75 bfd_elf_generic_reloc
, "R_390_JMP_SLOT", FALSE
, 0,0xffffffff, FALSE
),
76 HOWTO(R_390_RELATIVE
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
77 bfd_elf_generic_reloc
, "R_390_RELATIVE", FALSE
, 0,0xffffffff, FALSE
),
78 HOWTO(R_390_GOTOFF32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
79 bfd_elf_generic_reloc
, "R_390_GOTOFF32", FALSE
, 0,0xffffffff, FALSE
),
80 HOWTO(R_390_GOTPC
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
81 bfd_elf_generic_reloc
, "R_390_GOTPC", FALSE
, 0,0xffffffff, TRUE
),
82 HOWTO(R_390_GOT16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
83 bfd_elf_generic_reloc
, "R_390_GOT16", FALSE
, 0,0x0000ffff, FALSE
),
84 HOWTO(R_390_PC16
, 0, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
85 bfd_elf_generic_reloc
, "R_390_PC16", FALSE
, 0,0x0000ffff, TRUE
),
86 HOWTO(R_390_PC16DBL
, 1, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
87 bfd_elf_generic_reloc
, "R_390_PC16DBL", FALSE
, 0,0x0000ffff, TRUE
),
88 HOWTO(R_390_PLT16DBL
, 1, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
89 bfd_elf_generic_reloc
, "R_390_PLT16DBL", FALSE
, 0,0x0000ffff, TRUE
),
90 HOWTO(R_390_PC32DBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
91 bfd_elf_generic_reloc
, "R_390_PC32DBL", FALSE
, 0,0xffffffff, TRUE
),
92 HOWTO(R_390_PLT32DBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
93 bfd_elf_generic_reloc
, "R_390_PLT32DBL", FALSE
, 0,0xffffffff, TRUE
),
94 HOWTO(R_390_GOTPCDBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
95 bfd_elf_generic_reloc
, "R_390_GOTPCDBL", FALSE
, 0,0xffffffff, TRUE
),
96 EMPTY_HOWTO (R_390_64
), /* Empty entry for R_390_64. */
97 EMPTY_HOWTO (R_390_PC64
), /* Empty entry for R_390_PC64. */
98 EMPTY_HOWTO (R_390_GOT64
), /* Empty entry for R_390_GOT64. */
99 EMPTY_HOWTO (R_390_PLT64
), /* Empty entry for R_390_PLT64. */
100 HOWTO(R_390_GOTENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
101 bfd_elf_generic_reloc
, "R_390_GOTENT", FALSE
, 0,0xffffffff, TRUE
),
102 HOWTO(R_390_GOTOFF16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
103 bfd_elf_generic_reloc
, "R_390_GOTOFF16", FALSE
, 0,0x0000ffff, FALSE
),
104 EMPTY_HOWTO (R_390_GOTOFF64
), /* Empty entry for R_390_GOTOFF64. */
105 HOWTO(R_390_GOTPLT12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
106 bfd_elf_generic_reloc
, "R_390_GOTPLT12", FALSE
, 0,0x00000fff, FALSE
),
107 HOWTO(R_390_GOTPLT16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
108 bfd_elf_generic_reloc
, "R_390_GOTPLT16", FALSE
, 0,0x0000ffff, FALSE
),
109 HOWTO(R_390_GOTPLT32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
110 bfd_elf_generic_reloc
, "R_390_GOTPLT32", FALSE
, 0,0xffffffff, FALSE
),
111 EMPTY_HOWTO (R_390_GOTPLT64
), /* Empty entry for R_390_GOTPLT64. */
112 HOWTO(R_390_GOTPLTENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
113 bfd_elf_generic_reloc
, "R_390_GOTPLTENT",FALSE
, 0,0xffffffff, TRUE
),
114 HOWTO(R_390_PLTOFF16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
115 bfd_elf_generic_reloc
, "R_390_PLTOFF16", FALSE
, 0,0x0000ffff, FALSE
),
116 HOWTO(R_390_PLTOFF32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
117 bfd_elf_generic_reloc
, "R_390_PLTOFF32", FALSE
, 0,0xffffffff, FALSE
),
118 EMPTY_HOWTO (R_390_PLTOFF64
), /* Empty entry for R_390_PLTOFF64. */
119 HOWTO(R_390_TLS_LOAD
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
120 s390_tls_reloc
, "R_390_TLS_LOAD", FALSE
, 0, 0, FALSE
),
121 HOWTO(R_390_TLS_GDCALL
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
122 s390_tls_reloc
, "R_390_TLS_GDCALL", FALSE
, 0, 0, FALSE
),
123 HOWTO(R_390_TLS_LDCALL
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
124 s390_tls_reloc
, "R_390_TLS_LDCALL", FALSE
, 0, 0, FALSE
),
125 HOWTO(R_390_TLS_GD32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
126 bfd_elf_generic_reloc
, "R_390_TLS_GD32", FALSE
, 0, 0xffffffff, FALSE
),
127 EMPTY_HOWTO (R_390_TLS_GD64
), /* Empty entry for R_390_TLS_GD64. */
128 HOWTO(R_390_TLS_GOTIE12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
129 bfd_elf_generic_reloc
, "R_390_TLS_GOTIE12", FALSE
, 0, 0x00000fff, FALSE
),
130 HOWTO(R_390_TLS_GOTIE32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
131 bfd_elf_generic_reloc
, "R_390_TLS_GOTIE32", FALSE
, 0, 0xffffffff, FALSE
),
132 EMPTY_HOWTO (R_390_TLS_GOTIE64
), /* Empty entry for R_390_TLS_GOTIE64. */
133 HOWTO(R_390_TLS_LDM32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
134 bfd_elf_generic_reloc
, "R_390_TLS_LDM32", FALSE
, 0, 0xffffffff, FALSE
),
135 EMPTY_HOWTO (R_390_TLS_LDM64
), /* Empty entry for R_390_TLS_LDM64. */
136 HOWTO(R_390_TLS_IE32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
137 bfd_elf_generic_reloc
, "R_390_TLS_IE32", FALSE
, 0, 0xffffffff, FALSE
),
138 EMPTY_HOWTO (R_390_TLS_IE64
), /* Empty entry for R_390_TLS_IE64. */
139 HOWTO(R_390_TLS_IEENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
140 bfd_elf_generic_reloc
, "R_390_TLS_IEENT", FALSE
, 0, 0xffffffff, TRUE
),
141 HOWTO(R_390_TLS_LE32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
142 bfd_elf_generic_reloc
, "R_390_TLS_LE32", FALSE
, 0, 0xffffffff, FALSE
),
143 EMPTY_HOWTO (R_390_TLS_LE64
), /* Empty entry for R_390_TLS_LE64. */
144 HOWTO(R_390_TLS_LDO32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
145 bfd_elf_generic_reloc
, "R_390_TLS_LDO32", FALSE
, 0, 0xffffffff, FALSE
),
146 EMPTY_HOWTO (R_390_TLS_LDO64
), /* Empty entry for R_390_TLS_LDO64. */
147 HOWTO(R_390_TLS_DTPMOD
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
148 bfd_elf_generic_reloc
, "R_390_TLS_DTPMOD", FALSE
, 0, 0xffffffff, FALSE
),
149 HOWTO(R_390_TLS_DTPOFF
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
150 bfd_elf_generic_reloc
, "R_390_TLS_DTPOFF", FALSE
, 0, 0xffffffff, FALSE
),
151 HOWTO(R_390_TLS_TPOFF
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
152 bfd_elf_generic_reloc
, "R_390_TLS_TPOFF", FALSE
, 0, 0xffffffff, FALSE
),
153 HOWTO(R_390_20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
154 s390_elf_ldisp_reloc
, "R_390_20", FALSE
, 0,0x0fffff00, FALSE
),
155 HOWTO(R_390_GOT20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
156 s390_elf_ldisp_reloc
, "R_390_GOT20", FALSE
, 0,0x0fffff00, FALSE
),
157 HOWTO(R_390_GOTPLT20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
158 s390_elf_ldisp_reloc
, "R_390_GOTPLT20", FALSE
, 0,0x0fffff00, FALSE
),
159 HOWTO(R_390_TLS_GOTIE20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
160 s390_elf_ldisp_reloc
, "R_390_TLS_GOTIE20", FALSE
, 0,0x0fffff00, FALSE
),
161 HOWTO(R_390_IRELATIVE
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
162 bfd_elf_generic_reloc
, "R_390_IRELATIVE", FALSE
, 0, 0xffffffff, FALSE
),
163 HOWTO(R_390_PC12DBL
, 1, 1, 12, TRUE
, 0, complain_overflow_bitfield
,
164 bfd_elf_generic_reloc
, "R_390_PC12DBL", FALSE
, 0,0x00000fff, TRUE
),
165 HOWTO(R_390_PLT12DBL
, 1, 1, 12, TRUE
, 0, complain_overflow_bitfield
,
166 bfd_elf_generic_reloc
, "R_390_PLT12DBL", FALSE
, 0,0x00000fff, TRUE
),
167 HOWTO(R_390_PC24DBL
, 1, 2, 24, TRUE
, 0, complain_overflow_bitfield
,
168 bfd_elf_generic_reloc
, "R_390_PC24DBL", FALSE
, 0,0x00ffffff, TRUE
),
169 HOWTO(R_390_PLT24DBL
, 1, 2, 24, TRUE
, 0, complain_overflow_bitfield
,
170 bfd_elf_generic_reloc
, "R_390_PLT24DBL", FALSE
, 0,0x00ffffff, TRUE
),
173 /* GNU extension to record C++ vtable hierarchy. */
174 static reloc_howto_type elf32_s390_vtinherit_howto
=
175 HOWTO (R_390_GNU_VTINHERIT
, 0,2,0,FALSE
,0,complain_overflow_dont
, NULL
, "R_390_GNU_VTINHERIT", FALSE
,0, 0, FALSE
);
176 static reloc_howto_type elf32_s390_vtentry_howto
=
177 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
);
179 static reloc_howto_type
*
180 elf_s390_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
181 bfd_reloc_code_real_type code
)
186 return &elf_howto_table
[(int) R_390_NONE
];
188 return &elf_howto_table
[(int) R_390_8
];
189 case BFD_RELOC_390_12
:
190 return &elf_howto_table
[(int) R_390_12
];
192 return &elf_howto_table
[(int) R_390_16
];
194 return &elf_howto_table
[(int) R_390_32
];
196 return &elf_howto_table
[(int) R_390_32
];
197 case BFD_RELOC_32_PCREL
:
198 return &elf_howto_table
[(int) R_390_PC32
];
199 case BFD_RELOC_390_GOT12
:
200 return &elf_howto_table
[(int) R_390_GOT12
];
201 case BFD_RELOC_32_GOT_PCREL
:
202 return &elf_howto_table
[(int) R_390_GOT32
];
203 case BFD_RELOC_390_PLT32
:
204 return &elf_howto_table
[(int) R_390_PLT32
];
205 case BFD_RELOC_390_COPY
:
206 return &elf_howto_table
[(int) R_390_COPY
];
207 case BFD_RELOC_390_GLOB_DAT
:
208 return &elf_howto_table
[(int) R_390_GLOB_DAT
];
209 case BFD_RELOC_390_JMP_SLOT
:
210 return &elf_howto_table
[(int) R_390_JMP_SLOT
];
211 case BFD_RELOC_390_RELATIVE
:
212 return &elf_howto_table
[(int) R_390_RELATIVE
];
213 case BFD_RELOC_32_GOTOFF
:
214 return &elf_howto_table
[(int) R_390_GOTOFF32
];
215 case BFD_RELOC_390_GOTPC
:
216 return &elf_howto_table
[(int) R_390_GOTPC
];
217 case BFD_RELOC_390_GOT16
:
218 return &elf_howto_table
[(int) R_390_GOT16
];
219 case BFD_RELOC_16_PCREL
:
220 return &elf_howto_table
[(int) R_390_PC16
];
221 case BFD_RELOC_390_PC12DBL
:
222 return &elf_howto_table
[(int) R_390_PC12DBL
];
223 case BFD_RELOC_390_PLT12DBL
:
224 return &elf_howto_table
[(int) R_390_PLT12DBL
];
225 case BFD_RELOC_390_PC16DBL
:
226 return &elf_howto_table
[(int) R_390_PC16DBL
];
227 case BFD_RELOC_390_PLT16DBL
:
228 return &elf_howto_table
[(int) R_390_PLT16DBL
];
229 case BFD_RELOC_390_PC24DBL
:
230 return &elf_howto_table
[(int) R_390_PC24DBL
];
231 case BFD_RELOC_390_PLT24DBL
:
232 return &elf_howto_table
[(int) R_390_PLT24DBL
];
233 case BFD_RELOC_390_PC32DBL
:
234 return &elf_howto_table
[(int) R_390_PC32DBL
];
235 case BFD_RELOC_390_PLT32DBL
:
236 return &elf_howto_table
[(int) R_390_PLT32DBL
];
237 case BFD_RELOC_390_GOTPCDBL
:
238 return &elf_howto_table
[(int) R_390_GOTPCDBL
];
239 case BFD_RELOC_390_GOTENT
:
240 return &elf_howto_table
[(int) R_390_GOTENT
];
241 case BFD_RELOC_16_GOTOFF
:
242 return &elf_howto_table
[(int) R_390_GOTOFF16
];
243 case BFD_RELOC_390_GOTPLT12
:
244 return &elf_howto_table
[(int) R_390_GOTPLT12
];
245 case BFD_RELOC_390_GOTPLT16
:
246 return &elf_howto_table
[(int) R_390_GOTPLT16
];
247 case BFD_RELOC_390_GOTPLT32
:
248 return &elf_howto_table
[(int) R_390_GOTPLT32
];
249 case BFD_RELOC_390_GOTPLTENT
:
250 return &elf_howto_table
[(int) R_390_GOTPLTENT
];
251 case BFD_RELOC_390_PLTOFF16
:
252 return &elf_howto_table
[(int) R_390_PLTOFF16
];
253 case BFD_RELOC_390_PLTOFF32
:
254 return &elf_howto_table
[(int) R_390_PLTOFF32
];
255 case BFD_RELOC_390_TLS_LOAD
:
256 return &elf_howto_table
[(int) R_390_TLS_LOAD
];
257 case BFD_RELOC_390_TLS_GDCALL
:
258 return &elf_howto_table
[(int) R_390_TLS_GDCALL
];
259 case BFD_RELOC_390_TLS_LDCALL
:
260 return &elf_howto_table
[(int) R_390_TLS_LDCALL
];
261 case BFD_RELOC_390_TLS_GD32
:
262 return &elf_howto_table
[(int) R_390_TLS_GD32
];
263 case BFD_RELOC_390_TLS_GOTIE12
:
264 return &elf_howto_table
[(int) R_390_TLS_GOTIE12
];
265 case BFD_RELOC_390_TLS_GOTIE32
:
266 return &elf_howto_table
[(int) R_390_TLS_GOTIE32
];
267 case BFD_RELOC_390_TLS_LDM32
:
268 return &elf_howto_table
[(int) R_390_TLS_LDM32
];
269 case BFD_RELOC_390_TLS_IE32
:
270 return &elf_howto_table
[(int) R_390_TLS_IE32
];
271 case BFD_RELOC_390_TLS_IEENT
:
272 return &elf_howto_table
[(int) R_390_TLS_IEENT
];
273 case BFD_RELOC_390_TLS_LE32
:
274 return &elf_howto_table
[(int) R_390_TLS_LE32
];
275 case BFD_RELOC_390_TLS_LDO32
:
276 return &elf_howto_table
[(int) R_390_TLS_LDO32
];
277 case BFD_RELOC_390_TLS_DTPMOD
:
278 return &elf_howto_table
[(int) R_390_TLS_DTPMOD
];
279 case BFD_RELOC_390_TLS_DTPOFF
:
280 return &elf_howto_table
[(int) R_390_TLS_DTPOFF
];
281 case BFD_RELOC_390_TLS_TPOFF
:
282 return &elf_howto_table
[(int) R_390_TLS_TPOFF
];
283 case BFD_RELOC_390_20
:
284 return &elf_howto_table
[(int) R_390_20
];
285 case BFD_RELOC_390_GOT20
:
286 return &elf_howto_table
[(int) R_390_GOT20
];
287 case BFD_RELOC_390_GOTPLT20
:
288 return &elf_howto_table
[(int) R_390_GOTPLT20
];
289 case BFD_RELOC_390_TLS_GOTIE20
:
290 return &elf_howto_table
[(int) R_390_TLS_GOTIE20
];
291 case BFD_RELOC_390_IRELATIVE
:
292 return &elf_howto_table
[(int) R_390_IRELATIVE
];
293 case BFD_RELOC_VTABLE_INHERIT
:
294 return &elf32_s390_vtinherit_howto
;
295 case BFD_RELOC_VTABLE_ENTRY
:
296 return &elf32_s390_vtentry_howto
;
303 static reloc_howto_type
*
304 elf_s390_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
309 for (i
= 0; i
< sizeof (elf_howto_table
) / sizeof (elf_howto_table
[0]); i
++)
310 if (elf_howto_table
[i
].name
!= NULL
311 && strcasecmp (elf_howto_table
[i
].name
, r_name
) == 0)
312 return &elf_howto_table
[i
];
314 if (strcasecmp (elf32_s390_vtinherit_howto
.name
, r_name
) == 0)
315 return &elf32_s390_vtinherit_howto
;
316 if (strcasecmp (elf32_s390_vtentry_howto
.name
, r_name
) == 0)
317 return &elf32_s390_vtentry_howto
;
322 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
323 and elf32-s390.c has its own copy. */
326 elf_s390_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
328 Elf_Internal_Rela
*dst
)
330 unsigned int r_type
= ELF32_R_TYPE(dst
->r_info
);
333 case R_390_GNU_VTINHERIT
:
334 cache_ptr
->howto
= &elf32_s390_vtinherit_howto
;
337 case R_390_GNU_VTENTRY
:
338 cache_ptr
->howto
= &elf32_s390_vtentry_howto
;
342 if (r_type
>= sizeof (elf_howto_table
) / sizeof (elf_howto_table
[0]))
344 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
348 cache_ptr
->howto
= &elf_howto_table
[r_type
];
352 /* A relocation function which doesn't do anything. */
353 static bfd_reloc_status_type
354 s390_tls_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
355 arelent
*reloc_entry
,
356 asymbol
*symbol ATTRIBUTE_UNUSED
,
357 void * data ATTRIBUTE_UNUSED
,
358 asection
*input_section
,
360 char **error_message ATTRIBUTE_UNUSED
)
363 reloc_entry
->address
+= input_section
->output_offset
;
367 /* Handle the large displacement relocs. */
368 static bfd_reloc_status_type
369 s390_elf_ldisp_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
370 arelent
*reloc_entry
,
372 void * data ATTRIBUTE_UNUSED
,
373 asection
*input_section
,
375 char **error_message ATTRIBUTE_UNUSED
)
377 reloc_howto_type
*howto
= reloc_entry
->howto
;
381 if (output_bfd
!= (bfd
*) NULL
382 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
383 && (! howto
->partial_inplace
384 || reloc_entry
->addend
== 0))
386 reloc_entry
->address
+= input_section
->output_offset
;
390 if (output_bfd
!= NULL
)
391 return bfd_reloc_continue
;
393 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
394 return bfd_reloc_outofrange
;
396 relocation
= (symbol
->value
397 + symbol
->section
->output_section
->vma
398 + symbol
->section
->output_offset
);
399 relocation
+= reloc_entry
->addend
;
400 if (howto
->pc_relative
)
402 relocation
-= (input_section
->output_section
->vma
403 + input_section
->output_offset
);
404 relocation
-= reloc_entry
->address
;
407 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ reloc_entry
->address
);
408 insn
|= (relocation
& 0xfff) << 16 | (relocation
& 0xff000) >> 4;
409 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ reloc_entry
->address
);
411 if ((bfd_signed_vma
) relocation
< - 0x80000
412 || (bfd_signed_vma
) relocation
> 0x7ffff)
413 return bfd_reloc_overflow
;
419 elf_s390_is_local_label_name (bfd
*abfd
, const char *name
)
421 if (name
[0] == '.' && (name
[1] == 'X' || name
[1] == 'L'))
424 return _bfd_elf_is_local_label_name (abfd
, name
);
427 /* Functions for the 390 ELF linker. */
429 /* The name of the dynamic interpreter. This is put in the .interp
432 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
434 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
435 copying dynamic variables from a shared lib into an app's dynbss
436 section, and instead use a dynamic relocation to point into the
438 #define ELIMINATE_COPY_RELOCS 1
440 /* The size in bytes of the first entry in the procedure linkage table. */
441 #define PLT_FIRST_ENTRY_SIZE 32
442 /* The size in bytes of an entry in the procedure linkage table. */
443 #define PLT_ENTRY_SIZE 32
445 #define GOT_ENTRY_SIZE 4
447 #define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela)
449 /* The first three entries in a procedure linkage table are reserved,
450 and the initial contents are unimportant (we zero them out).
451 Subsequent entries look like this. See the SVR4 ABI 386
452 supplement to see how this works. */
454 /* For the s390, simple addr offset can only be 0 - 4096.
455 To use the full 2 GB address space, several instructions
456 are needed to load an address in a register and execute
457 a branch( or just saving the address)
459 Furthermore, only r 0 and 1 are free to use!!! */
461 /* The first 3 words in the GOT are then reserved.
462 Word 0 is the address of the dynamic table.
463 Word 1 is a pointer to a structure describing the object
464 Word 2 is used to point to the loader entry address.
466 The code for position independent PLT entries looks like this:
468 r12 holds addr of the current GOT at entry to the PLT
470 The GOT holds the address in the PLT to be executed.
471 The loader then gets:
472 24(15) = Pointer to the structure describing the object.
473 28(15) = Offset into rela.plt
475 The loader must then find the module where the function is
476 and insert the address in the GOT.
478 Note: 390 can only address +- 64 K relative.
479 We check if offset > 65536, then make a relative branch -64xxx
480 back to a previous defined branch
482 PLT1: BASR 1,0 # 2 bytes
483 L 1,22(1) # 4 bytes Load offset in GOT in r 1
484 L 1,(1,12) # 4 bytes Load address from GOT in r1
485 BCR 15,1 # 2 bytes Jump to address
486 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
487 L 1,14(1) # 4 bytes Load offset in symol table in r1
488 BRC 15,-x # 4 bytes Jump to start of PLT
489 .word 0 # 2 bytes filler
490 .long ? # 4 bytes offset in GOT
491 .long ? # 4 bytes offset into rela.plt
493 This was the general case. There are two additional, optimizes PLT
494 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
495 First the one for GOT offsets < 4096:
497 PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
498 BCR 15,1 # 2 bytes Jump to address
499 .word 0,0,0 # 6 bytes filler
500 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
501 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
502 BRC 15,-x # 4 bytes Jump to start of PLT
503 .word 0,0,0 # 6 bytes filler
504 .long ? # 4 bytes offset into rela.plt
506 Second the one for GOT offsets < 32768:
508 PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
509 L 1,(1,12) # 4 bytes Load address from GOT to r1
510 BCR 15,1 # 2 bytes Jump to address
511 .word 0 # 2 bytes filler
512 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
513 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
514 BRC 15,-x # 4 bytes Jump to start of PLT
515 .word 0,0,0 # 6 bytes filler
516 .long ? # 4 bytes offset into rela.plt
518 Total = 32 bytes per PLT entry
520 The code for static build PLT entries looks like this:
522 PLT1: BASR 1,0 # 2 bytes
523 L 1,22(1) # 4 bytes Load address of GOT entry
524 L 1,0(0,1) # 4 bytes Load address from GOT in r1
525 BCR 15,1 # 2 bytes Jump to address
526 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
527 L 1,14(1) # 4 bytes Load offset in symbol table in r1
528 BRC 15,-x # 4 bytes Jump to start of PLT
529 .word 0 # 2 bytes filler
530 .long ? # 4 bytes address of GOT entry
531 .long ? # 4 bytes offset into rela.plt */
533 static const bfd_byte elf_s390_plt_entry
[PLT_ENTRY_SIZE
] =
535 0x0d, 0x10, /* basr %r1,%r0 */
536 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
537 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */
538 0x07, 0xf1, /* br %r1 */
539 0x0d, 0x10, /* basr %r1,%r0 */
540 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
541 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
542 0x00, 0x00, /* padding */
543 0x00, 0x00, 0x00, 0x00, /* GOT offset */
544 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
547 /* Generic PLT pic entry. */
548 static const bfd_byte elf_s390_plt_pic_entry
[PLT_ENTRY_SIZE
] =
550 0x0d, 0x10, /* basr %r1,%r0 */
551 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
552 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
553 0x07, 0xf1, /* br %r1 */
554 0x0d, 0x10, /* basr %r1,%r0 */
555 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
556 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
557 0x00, 0x00, /* padding */
558 0x00, 0x00, 0x00, 0x00, /* GOT offset */
559 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
562 /* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced
563 when generating the PLT slot with the GOT offset. */
564 static const bfd_byte elf_s390_plt_pic12_entry
[PLT_ENTRY_SIZE
] =
566 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */
567 0x07, 0xf1, /* br %r1 */
568 0x00, 0x00, 0x00, 0x00, /* padding */
570 0x0d, 0x10, /* basr %r1,%r0 */
571 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
572 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
573 0x00, 0x00, 0x00, 0x00,
574 0x00, 0x00, 0x00, 0x00
577 /* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced
578 when generating the PLT slot with the GOT offset. */
579 static const bfd_byte elf_s390_plt_pic16_entry
[PLT_ENTRY_SIZE
] =
581 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */
582 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
583 0x07, 0xf1, /* br %r1 */
585 0x0d, 0x10, /* basr %r1,%r0 */
586 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
587 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
588 0x00, 0x00, 0x00, 0x00,
589 0x00, 0x00, 0x00, 0x00,
593 /* The first PLT entry pushes the offset into the rela.plt
594 from R1 onto the stack at 8(15) and the loader object info
595 at 12(15), loads the loader address in R1 and jumps to it. */
597 /* The first entry in the PLT for PIC code:
600 ST 1,28(15) # R1 has offset into rela.plt
601 L 1,4(12) # Get loader ino(object struct address)
602 ST 1,24(15) # Store address
603 L 1,8(12) # Entry address of loader in R1
604 BR 1 # Jump to loader
606 The first entry in the PLT for static code:
609 ST 1,28(15) # R1 has offset into rela.plt
611 L 1,18(0,1) # Get address of GOT
612 MVC 24(4,15),4(1) # Move loader ino to stack
613 L 1,8(1) # Get address of loader
614 BR 1 # Jump to loader
616 .long got # address of GOT */
618 static const bfd_byte elf_s390_plt_first_entry
[PLT_FIRST_ENTRY_SIZE
] =
620 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
621 0x0d, 0x10, /* basr %r1,%r0 */
622 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */
623 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */
624 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */
625 0x07, 0xf1, /* br %r1 */
626 0x00, 0x00, 0x00, 0x00,
627 0x00, 0x00, 0x00, 0x00,
631 static const bfd_byte elf_s390_plt_pic_first_entry
[PLT_FIRST_ENTRY_SIZE
] =
633 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
634 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */
635 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */
636 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */
637 0x07, 0xf1, /* br %r1 */
638 0x00, 0x00, 0x00, 0x00,
639 0x00, 0x00, 0x00, 0x00,
640 0x00, 0x00, 0x00, 0x00,
645 /* s390 ELF linker hash entry. */
647 struct elf_s390_link_hash_entry
649 struct elf_link_hash_entry elf
;
651 /* Track dynamic relocs copied for this symbol. */
652 struct elf_dyn_relocs
*dyn_relocs
;
654 /* Number of GOTPLT references for a function. */
655 bfd_signed_vma gotplt_refcount
;
657 #define GOT_UNKNOWN 0
661 #define GOT_TLS_IE_NLT 4
662 unsigned char tls_type
;
664 /* For pointer equality reasons we might need to change the symbol
665 type from STT_GNU_IFUNC to STT_FUNC together with its value and
666 section entry. So after alloc_dynrelocs only these values should
667 be used. In order to check whether a symbol is IFUNC use
668 s390_is_ifunc_symbol_p. */
669 bfd_vma ifunc_resolver_address
;
670 asection
*ifunc_resolver_section
;
673 #define elf_s390_hash_entry(ent) \
674 ((struct elf_s390_link_hash_entry *)(ent))
676 /* This structure represents an entry in the local PLT list needed for
677 local IFUNC symbols. */
680 /* The section of the local symbol.
681 Set in relocate_section and used in finish_dynamic_sections. */
686 bfd_signed_vma refcount
;
691 /* NOTE: Keep this structure in sync with
692 the one declared in elf64-s390.c. */
693 struct elf_s390_obj_tdata
695 struct elf_obj_tdata root
;
697 /* A local PLT is needed for ifunc symbols. */
698 struct plt_entry
*local_plt
;
700 /* TLS type for each local got entry. */
701 char *local_got_tls_type
;
704 #define elf_s390_tdata(abfd) \
705 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
707 #define elf_s390_local_plt(abfd) \
708 (elf_s390_tdata (abfd)->local_plt)
710 #define elf_s390_local_got_tls_type(abfd) \
711 (elf_s390_tdata (abfd)->local_got_tls_type)
713 #define is_s390_elf(bfd) \
714 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
715 && elf_tdata (bfd) != NULL \
716 && elf_object_id (bfd) == S390_ELF_DATA)
719 elf_s390_mkobject (bfd
*abfd
)
721 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_s390_obj_tdata
),
726 elf_s390_object_p (bfd
*abfd
)
728 /* Set the right machine number for an s390 elf32 file. */
729 return bfd_default_set_arch_mach (abfd
, bfd_arch_s390
, bfd_mach_s390_31
);
732 /* s390 ELF linker hash table. */
734 struct elf_s390_link_hash_table
736 struct elf_link_hash_table elf
;
738 /* Short-cuts to get to dynamic linker sections. */
745 bfd_signed_vma refcount
;
749 /* Small local sym cache. */
750 struct sym_cache sym_cache
;
753 /* Get the s390 ELF linker hash table from a link_info structure. */
755 #define elf_s390_hash_table(p) \
756 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
757 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
760 #include "elf-s390-common.c"
762 /* Create an entry in an s390 ELF linker hash table. */
764 static struct bfd_hash_entry
*
765 link_hash_newfunc (struct bfd_hash_entry
*entry
,
766 struct bfd_hash_table
*table
,
769 /* Allocate the structure if it has not already been allocated by a
773 entry
= bfd_hash_allocate (table
,
774 sizeof (struct elf_s390_link_hash_entry
));
779 /* Call the allocation method of the superclass. */
780 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
783 struct elf_s390_link_hash_entry
*eh
;
785 eh
= (struct elf_s390_link_hash_entry
*) entry
;
786 eh
->dyn_relocs
= NULL
;
787 eh
->gotplt_refcount
= 0;
788 eh
->tls_type
= GOT_UNKNOWN
;
789 eh
->ifunc_resolver_address
= 0;
790 eh
->ifunc_resolver_section
= NULL
;
796 /* Create an s390 ELF linker hash table. */
798 static struct bfd_link_hash_table
*
799 elf_s390_link_hash_table_create (bfd
*abfd
)
801 struct elf_s390_link_hash_table
*ret
;
802 bfd_size_type amt
= sizeof (struct elf_s390_link_hash_table
);
804 ret
= (struct elf_s390_link_hash_table
*) bfd_zmalloc (amt
);
808 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
, link_hash_newfunc
,
809 sizeof (struct elf_s390_link_hash_entry
),
816 return &ret
->elf
.root
;
819 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
820 shortcuts to them in our hash table. */
823 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
825 struct elf_s390_link_hash_table
*htab
;
827 if (! _bfd_elf_create_got_section (dynobj
, info
))
830 htab
= elf_s390_hash_table (info
);
831 htab
->elf
.sgot
= bfd_get_linker_section (dynobj
, ".got");
832 htab
->elf
.sgotplt
= bfd_get_linker_section (dynobj
, ".got.plt");
833 htab
->elf
.srelgot
= bfd_get_linker_section (dynobj
, ".rela.got");
834 if (!htab
->elf
.sgot
|| !htab
->elf
.sgotplt
|| !htab
->elf
.srelgot
)
840 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
841 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
845 elf_s390_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
847 struct elf_s390_link_hash_table
*htab
;
849 htab
= elf_s390_hash_table (info
);
850 if (!htab
->elf
.sgot
&& !create_got_section (dynobj
, info
))
853 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
856 htab
->elf
.splt
= bfd_get_linker_section (dynobj
, ".plt");
857 htab
->elf
.srelplt
= bfd_get_linker_section (dynobj
, ".rela.plt");
858 htab
->sdynbss
= bfd_get_linker_section (dynobj
, ".dynbss");
859 if (!bfd_link_pic (info
))
860 htab
->srelbss
= bfd_get_linker_section (dynobj
, ".rela.bss");
862 if (!htab
->elf
.splt
|| !htab
->elf
.srelplt
|| !htab
->sdynbss
863 || (!bfd_link_pic (info
) && !htab
->srelbss
))
869 /* Copy the extra info we tack onto an elf_link_hash_entry. */
872 elf_s390_copy_indirect_symbol (struct bfd_link_info
*info
,
873 struct elf_link_hash_entry
*dir
,
874 struct elf_link_hash_entry
*ind
)
876 struct elf_s390_link_hash_entry
*edir
, *eind
;
878 edir
= (struct elf_s390_link_hash_entry
*) dir
;
879 eind
= (struct elf_s390_link_hash_entry
*) ind
;
881 if (eind
->dyn_relocs
!= NULL
)
883 if (edir
->dyn_relocs
!= NULL
)
885 struct elf_dyn_relocs
**pp
;
886 struct elf_dyn_relocs
*p
;
888 /* Add reloc counts against the indirect sym to the direct sym
889 list. Merge any entries against the same section. */
890 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
892 struct elf_dyn_relocs
*q
;
894 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
895 if (q
->sec
== p
->sec
)
897 q
->pc_count
+= p
->pc_count
;
898 q
->count
+= p
->count
;
905 *pp
= edir
->dyn_relocs
;
908 edir
->dyn_relocs
= eind
->dyn_relocs
;
909 eind
->dyn_relocs
= NULL
;
912 if (ind
->root
.type
== bfd_link_hash_indirect
913 && dir
->got
.refcount
<= 0)
915 edir
->tls_type
= eind
->tls_type
;
916 eind
->tls_type
= GOT_UNKNOWN
;
919 if (ELIMINATE_COPY_RELOCS
920 && ind
->root
.type
!= bfd_link_hash_indirect
921 && dir
->dynamic_adjusted
)
923 /* If called to transfer flags for a weakdef during processing
924 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
925 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
926 dir
->ref_dynamic
|= ind
->ref_dynamic
;
927 dir
->ref_regular
|= ind
->ref_regular
;
928 dir
->ref_regular_nonweak
|= ind
->ref_regular_nonweak
;
929 dir
->needs_plt
|= ind
->needs_plt
;
932 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
936 elf_s390_tls_transition (struct bfd_link_info
*info
,
940 if (bfd_link_pic (info
))
948 return R_390_TLS_LE32
;
949 return R_390_TLS_IE32
;
950 case R_390_TLS_GOTIE32
:
952 return R_390_TLS_LE32
;
953 return R_390_TLS_GOTIE32
;
954 case R_390_TLS_LDM32
:
955 return R_390_TLS_LE32
;
961 /* Look through the relocs for a section during the first phase, and
962 allocate space in the global offset table or procedure linkage
966 elf_s390_check_relocs (bfd
*abfd
,
967 struct bfd_link_info
*info
,
969 const Elf_Internal_Rela
*relocs
)
971 struct elf_s390_link_hash_table
*htab
;
972 Elf_Internal_Shdr
*symtab_hdr
;
973 struct elf_link_hash_entry
**sym_hashes
;
974 const Elf_Internal_Rela
*rel
;
975 const Elf_Internal_Rela
*rel_end
;
977 bfd_signed_vma
*local_got_refcounts
;
978 int tls_type
, old_tls_type
;
979 Elf_Internal_Sym
*isym
;
981 if (bfd_link_relocatable (info
))
984 BFD_ASSERT (is_s390_elf (abfd
));
986 htab
= elf_s390_hash_table (info
);
987 symtab_hdr
= &elf_symtab_hdr (abfd
);
988 sym_hashes
= elf_sym_hashes (abfd
);
989 local_got_refcounts
= elf_local_got_refcounts (abfd
);
993 rel_end
= relocs
+ sec
->reloc_count
;
994 for (rel
= relocs
; rel
< rel_end
; rel
++)
997 unsigned long r_symndx
;
998 struct elf_link_hash_entry
*h
;
1000 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1002 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
1004 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"),
1009 if (r_symndx
< symtab_hdr
->sh_info
)
1011 /* A local symbol. */
1012 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
1017 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
1019 struct plt_entry
*plt
;
1021 if (htab
->elf
.dynobj
== NULL
)
1022 htab
->elf
.dynobj
= abfd
;
1024 if (!s390_elf_create_ifunc_sections (htab
->elf
.dynobj
, info
))
1027 if (local_got_refcounts
== NULL
)
1029 if (!elf_s390_allocate_local_syminfo (abfd
, symtab_hdr
))
1031 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1033 plt
= elf_s390_local_plt (abfd
);
1034 plt
[r_symndx
].plt
.refcount
++;
1040 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1041 while (h
->root
.type
== bfd_link_hash_indirect
1042 || h
->root
.type
== bfd_link_hash_warning
)
1043 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1045 /* PR15323, ref flags aren't set for references in the same
1047 h
->root
.non_ir_ref
= 1;
1050 /* Create got section and local_got_refcounts array if they
1052 r_type
= elf_s390_tls_transition (info
,
1053 ELF32_R_TYPE (rel
->r_info
),
1062 case R_390_GOTPLT12
:
1063 case R_390_GOTPLT16
:
1064 case R_390_GOTPLT20
:
1065 case R_390_GOTPLT32
:
1066 case R_390_GOTPLTENT
:
1067 case R_390_TLS_GD32
:
1068 case R_390_TLS_GOTIE12
:
1069 case R_390_TLS_GOTIE20
:
1070 case R_390_TLS_GOTIE32
:
1071 case R_390_TLS_IEENT
:
1072 case R_390_TLS_IE32
:
1073 case R_390_TLS_LDM32
:
1075 && local_got_refcounts
== NULL
)
1077 if (!elf_s390_allocate_local_syminfo (abfd
, symtab_hdr
))
1079 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1082 case R_390_GOTOFF16
:
1083 case R_390_GOTOFF32
:
1085 case R_390_GOTPCDBL
:
1086 if (htab
->elf
.sgot
== NULL
)
1088 if (htab
->elf
.dynobj
== NULL
)
1089 htab
->elf
.dynobj
= abfd
;
1090 if (!create_got_section (htab
->elf
.dynobj
, info
))
1097 if (htab
->elf
.dynobj
== NULL
)
1098 htab
->elf
.dynobj
= abfd
;
1099 if (!s390_elf_create_ifunc_sections (htab
->elf
.dynobj
, info
))
1102 /* Make sure an IFUNC symbol defined in a non-shared object
1103 always gets a PLT slot. */
1104 if (s390_is_ifunc_symbol_p (h
) && h
->def_regular
)
1106 /* The symbol is called by the dynamic loader in order
1107 to resolve the relocation. So it is in fact also
1116 case R_390_GOTPCDBL
:
1117 /* These relocs do not need a GOT slot. They just load the
1118 GOT pointer itself or address something else relative to
1119 the GOT. Since the GOT pointer has been set up above we
1122 case R_390_GOTOFF16
:
1123 case R_390_GOTOFF32
:
1124 if (h
== NULL
|| !s390_is_ifunc_symbol_p (h
) || !h
->def_regular
)
1127 case R_390_PLT12DBL
:
1128 case R_390_PLT16DBL
:
1129 case R_390_PLT24DBL
:
1130 case R_390_PLT32DBL
:
1132 case R_390_PLTOFF16
:
1133 case R_390_PLTOFF32
:
1134 /* This symbol requires a procedure linkage table entry. We
1135 actually build the entry in adjust_dynamic_symbol,
1136 because this might be a case of linking PIC code which is
1137 never referenced by a dynamic object, in which case we
1138 don't need to generate a procedure linkage table entry
1141 /* If this is a local symbol, we resolve it directly without
1142 creating a procedure linkage table entry. */
1146 h
->plt
.refcount
+= 1;
1150 case R_390_GOTPLT12
:
1151 case R_390_GOTPLT16
:
1152 case R_390_GOTPLT20
:
1153 case R_390_GOTPLT32
:
1154 case R_390_GOTPLTENT
:
1155 /* This symbol requires either a procedure linkage table entry
1156 or an entry in the local got. We actually build the entry
1157 in adjust_dynamic_symbol because whether this is really a
1158 global reference can change and with it the fact if we have
1159 to create a plt entry or a local got entry. To be able to
1160 make a once global symbol a local one we have to keep track
1161 of the number of gotplt references that exist for this
1165 ((struct elf_s390_link_hash_entry
*) h
)->gotplt_refcount
++;
1167 h
->plt
.refcount
+= 1;
1170 local_got_refcounts
[r_symndx
] += 1;
1173 case R_390_TLS_LDM32
:
1174 htab
->tls_ldm_got
.refcount
+= 1;
1177 case R_390_TLS_IE32
:
1178 case R_390_TLS_GOTIE12
:
1179 case R_390_TLS_GOTIE20
:
1180 case R_390_TLS_GOTIE32
:
1181 case R_390_TLS_IEENT
:
1182 if (bfd_link_pic (info
))
1183 info
->flags
|= DF_STATIC_TLS
;
1191 case R_390_TLS_GD32
:
1192 /* This symbol requires a global offset table entry. */
1201 tls_type
= GOT_NORMAL
;
1203 case R_390_TLS_GD32
:
1204 tls_type
= GOT_TLS_GD
;
1206 case R_390_TLS_IE32
:
1207 case R_390_TLS_GOTIE32
:
1208 tls_type
= GOT_TLS_IE
;
1210 case R_390_TLS_GOTIE12
:
1211 case R_390_TLS_GOTIE20
:
1212 case R_390_TLS_IEENT
:
1213 tls_type
= GOT_TLS_IE_NLT
;
1219 h
->got
.refcount
+= 1;
1220 old_tls_type
= elf_s390_hash_entry(h
)->tls_type
;
1224 local_got_refcounts
[r_symndx
] += 1;
1225 old_tls_type
= elf_s390_local_got_tls_type (abfd
) [r_symndx
];
1227 /* If a TLS symbol is accessed using IE at least once,
1228 there is no point to use dynamic model for it. */
1229 if (old_tls_type
!= tls_type
&& old_tls_type
!= GOT_UNKNOWN
)
1231 if (old_tls_type
== GOT_NORMAL
|| tls_type
== GOT_NORMAL
)
1233 (*_bfd_error_handler
)
1234 (_("%B: `%s' accessed both as normal and thread local symbol"),
1235 abfd
, h
->root
.root
.string
);
1238 if (old_tls_type
> tls_type
)
1239 tls_type
= old_tls_type
;
1242 if (old_tls_type
!= tls_type
)
1245 elf_s390_hash_entry (h
)->tls_type
= tls_type
;
1247 elf_s390_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
1250 if (r_type
!= R_390_TLS_IE32
)
1254 case R_390_TLS_LE32
:
1255 /* For static linking and executables this reloc will be
1256 calculated at linktime otherwise a TLS_TPOFF runtime
1257 reloc will be generated. */
1258 if (r_type
== R_390_TLS_LE32
&& bfd_link_pie (info
))
1261 if (!bfd_link_pic (info
))
1263 info
->flags
|= DF_STATIC_TLS
;
1277 /* If this reloc is in a read-only section, we might
1278 need a copy reloc. We can't check reliably at this
1279 stage whether the section is read-only, as input
1280 sections have not yet been mapped to output sections.
1281 Tentatively set the flag for now, and correct in
1282 adjust_dynamic_symbol. */
1285 if (!bfd_link_pic (info
))
1287 /* We may need a .plt entry if the function this reloc
1288 refers to is in a shared lib. */
1289 h
->plt
.refcount
+= 1;
1293 /* If we are creating a shared library, and this is a reloc
1294 against a global symbol, or a non PC relative reloc
1295 against a local symbol, then we need to copy the reloc
1296 into the shared library. However, if we are linking with
1297 -Bsymbolic, we do not need to copy a reloc against a
1298 global symbol which is defined in an object we are
1299 including in the link (i.e., DEF_REGULAR is set). At
1300 this point we have not seen all the input files, so it is
1301 possible that DEF_REGULAR is not set now but will be set
1302 later (it is never cleared). In case of a weak definition,
1303 DEF_REGULAR may be cleared later by a strong definition in
1304 a shared library. We account for that possibility below by
1305 storing information in the relocs_copied field of the hash
1306 table entry. A similar situation occurs when creating
1307 shared libraries and symbol visibility changes render the
1310 If on the other hand, we are creating an executable, we
1311 may need to keep relocations for symbols satisfied by a
1312 dynamic library if we manage to avoid copy relocs for the
1314 if ((bfd_link_pic (info
)
1315 && (sec
->flags
& SEC_ALLOC
) != 0
1316 && ((ELF32_R_TYPE (rel
->r_info
) != R_390_PC16
1317 && ELF32_R_TYPE (rel
->r_info
) != R_390_PC12DBL
1318 && ELF32_R_TYPE (rel
->r_info
) != R_390_PC16DBL
1319 && ELF32_R_TYPE (rel
->r_info
) != R_390_PC24DBL
1320 && ELF32_R_TYPE (rel
->r_info
) != R_390_PC32DBL
1321 && ELF32_R_TYPE (rel
->r_info
) != R_390_PC32
)
1323 && (! SYMBOLIC_BIND (info
, h
)
1324 || h
->root
.type
== bfd_link_hash_defweak
1325 || !h
->def_regular
))))
1326 || (ELIMINATE_COPY_RELOCS
1327 && !bfd_link_pic (info
)
1328 && (sec
->flags
& SEC_ALLOC
) != 0
1330 && (h
->root
.type
== bfd_link_hash_defweak
1331 || !h
->def_regular
)))
1333 struct elf_dyn_relocs
*p
;
1334 struct elf_dyn_relocs
**head
;
1336 /* We must copy these reloc types into the output file.
1337 Create a reloc section in dynobj and make room for
1341 if (htab
->elf
.dynobj
== NULL
)
1342 htab
->elf
.dynobj
= abfd
;
1344 sreloc
= _bfd_elf_make_dynamic_reloc_section
1345 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
1351 /* If this is a global symbol, we count the number of
1352 relocations we need for this symbol. */
1355 head
= &((struct elf_s390_link_hash_entry
*) h
)->dyn_relocs
;
1359 /* Track dynamic relocs needed for local syms too.
1360 We really need local syms available to do this
1365 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
1370 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
1374 vpp
= &elf_section_data (s
)->local_dynrel
;
1375 head
= (struct elf_dyn_relocs
**) vpp
;
1379 if (p
== NULL
|| p
->sec
!= sec
)
1381 bfd_size_type amt
= sizeof *p
;
1383 p
= ((struct elf_dyn_relocs
*)
1384 bfd_alloc (htab
->elf
.dynobj
, amt
));
1395 if (ELF32_R_TYPE (rel
->r_info
) == R_390_PC16
1396 || ELF32_R_TYPE (rel
->r_info
) == R_390_PC12DBL
1397 || ELF32_R_TYPE (rel
->r_info
) == R_390_PC16DBL
1398 || ELF32_R_TYPE (rel
->r_info
) == R_390_PC24DBL
1399 || ELF32_R_TYPE (rel
->r_info
) == R_390_PC32DBL
1400 || ELF32_R_TYPE (rel
->r_info
) == R_390_PC32
)
1405 /* This relocation describes the C++ object vtable hierarchy.
1406 Reconstruct it for later use during GC. */
1407 case R_390_GNU_VTINHERIT
:
1408 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1412 /* This relocation describes which C++ vtable entries are actually
1413 used. Record for later use during GC. */
1414 case R_390_GNU_VTENTRY
:
1415 BFD_ASSERT (h
!= NULL
);
1417 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1429 /* Return the section that should be marked against GC for a given
1433 elf_s390_gc_mark_hook (asection
*sec
,
1434 struct bfd_link_info
*info
,
1435 Elf_Internal_Rela
*rel
,
1436 struct elf_link_hash_entry
*h
,
1437 Elf_Internal_Sym
*sym
)
1440 switch (ELF32_R_TYPE (rel
->r_info
))
1442 case R_390_GNU_VTINHERIT
:
1443 case R_390_GNU_VTENTRY
:
1446 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1450 /* Update the got entry reference counts for the section being removed. */
1453 elf_s390_gc_sweep_hook (bfd
*abfd
,
1454 struct bfd_link_info
*info
,
1456 const Elf_Internal_Rela
*relocs
)
1458 struct elf_s390_link_hash_table
*htab
;
1459 Elf_Internal_Shdr
*symtab_hdr
;
1460 struct elf_link_hash_entry
**sym_hashes
;
1461 bfd_signed_vma
*local_got_refcounts
;
1462 const Elf_Internal_Rela
*rel
, *relend
;
1464 if (bfd_link_relocatable (info
))
1467 htab
= elf_s390_hash_table (info
);
1471 elf_section_data (sec
)->local_dynrel
= NULL
;
1473 symtab_hdr
= &elf_symtab_hdr (abfd
);
1474 sym_hashes
= elf_sym_hashes (abfd
);
1475 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1477 relend
= relocs
+ sec
->reloc_count
;
1478 for (rel
= relocs
; rel
< relend
; rel
++)
1480 unsigned long r_symndx
;
1481 unsigned int r_type
;
1482 struct elf_link_hash_entry
*h
= NULL
;
1484 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1485 if (r_symndx
>= symtab_hdr
->sh_info
)
1487 struct elf_s390_link_hash_entry
*eh
;
1488 struct elf_dyn_relocs
**pp
;
1489 struct elf_dyn_relocs
*p
;
1491 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1492 while (h
->root
.type
== bfd_link_hash_indirect
1493 || h
->root
.type
== bfd_link_hash_warning
)
1494 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1495 eh
= (struct elf_s390_link_hash_entry
*) h
;
1497 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
1500 /* Everything must go for SEC. */
1507 Elf_Internal_Sym
*isym
;
1509 /* A local symbol. */
1510 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
1515 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
1517 struct plt_entry
*plt
= elf_s390_local_plt (abfd
);
1518 if (plt
[r_symndx
].plt
.refcount
> 0)
1519 plt
[r_symndx
].plt
.refcount
--;
1523 r_type
= ELF32_R_TYPE (rel
->r_info
);
1524 r_type
= elf_s390_tls_transition (info
, r_type
, h
!= NULL
);
1527 case R_390_TLS_LDM32
:
1528 if (elf_s390_hash_table (info
)->tls_ldm_got
.refcount
> 0)
1529 elf_s390_hash_table (info
)->tls_ldm_got
.refcount
-= 1;
1532 case R_390_GOTOFF16
:
1533 case R_390_GOTOFF32
:
1534 if (s390_is_ifunc_symbol_p (h
) && h
->def_regular
)
1541 case R_390_GOTPCDBL
:
1544 case R_390_TLS_GD32
:
1545 case R_390_TLS_IE32
:
1546 case R_390_TLS_GOTIE12
:
1547 case R_390_TLS_GOTIE20
:
1548 case R_390_TLS_GOTIE32
:
1549 case R_390_TLS_IEENT
:
1557 if (h
->got
.refcount
> 0)
1558 h
->got
.refcount
-= 1;
1560 else if (local_got_refcounts
!= NULL
)
1562 if (local_got_refcounts
[r_symndx
] > 0)
1563 local_got_refcounts
[r_symndx
] -= 1;
1578 if (bfd_link_pic (info
))
1582 case R_390_PLT12DBL
:
1583 case R_390_PLT16DBL
:
1584 case R_390_PLT24DBL
:
1585 case R_390_PLT32DBL
:
1587 case R_390_PLTOFF16
:
1588 case R_390_PLTOFF32
:
1591 if (h
->plt
.refcount
> 0)
1592 h
->plt
.refcount
-= 1;
1596 case R_390_GOTPLT12
:
1597 case R_390_GOTPLT16
:
1598 case R_390_GOTPLT20
:
1599 case R_390_GOTPLT32
:
1600 case R_390_GOTPLTENT
:
1603 if (h
->plt
.refcount
> 0)
1605 ((struct elf_s390_link_hash_entry
*) h
)->gotplt_refcount
--;
1606 h
->plt
.refcount
-= 1;
1609 else if (local_got_refcounts
!= NULL
)
1611 if (local_got_refcounts
[r_symndx
] > 0)
1612 local_got_refcounts
[r_symndx
] -= 1;
1624 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1625 entry but we found we will not create any. Called when we find we will
1626 not have any PLT for this symbol, by for example
1627 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1628 or elf_s390_size_dynamic_sections if no dynamic sections will be
1629 created (we're only linking static objects). */
1632 elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry
*h
)
1634 if (h
->elf
.root
.type
== bfd_link_hash_warning
)
1635 h
= (struct elf_s390_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
1637 if (h
->gotplt_refcount
<= 0)
1640 /* We simply add the number of gotplt references to the number
1641 * of got references for this symbol. */
1642 h
->elf
.got
.refcount
+= h
->gotplt_refcount
;
1643 h
->gotplt_refcount
= -1;
1646 /* Adjust a symbol defined by a dynamic object and referenced by a
1647 regular object. The current definition is in some section of the
1648 dynamic object, but we're not including those sections. We have to
1649 change the definition to something the rest of the link can
1653 elf_s390_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1654 struct elf_link_hash_entry
*h
)
1656 struct elf_s390_link_hash_table
*htab
;
1659 /* STT_GNU_IFUNC symbol must go through PLT. */
1660 if (s390_is_ifunc_symbol_p (h
))
1663 /* If this is a function, put it in the procedure linkage table. We
1664 will fill in the contents of the procedure linkage table later
1665 (although we could actually do it here). */
1666 if (h
->type
== STT_FUNC
1669 if (h
->plt
.refcount
<= 0
1670 || SYMBOL_CALLS_LOCAL (info
, h
)
1671 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
1672 && h
->root
.type
!= bfd_link_hash_undefweak
))
1674 /* This case can occur if we saw a PLT32 reloc in an input
1675 file, but the symbol was never referred to by a dynamic
1676 object, or if all references were garbage collected. In
1677 such a case, we don't actually need to build a procedure
1678 linkage table, and we can just do a PC32 reloc instead. */
1679 h
->plt
.offset
= (bfd_vma
) -1;
1681 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1687 /* It's possible that we incorrectly decided a .plt reloc was
1688 needed for an R_390_PC32 reloc to a non-function sym in
1689 check_relocs. We can't decide accurately between function and
1690 non-function syms in check-relocs; Objects loaded later in
1691 the link may change h->type. So fix it now. */
1692 h
->plt
.offset
= (bfd_vma
) -1;
1694 /* If this is a weak symbol, and there is a real definition, the
1695 processor independent code will have arranged for us to see the
1696 real definition first, and we can just use the same value. */
1697 if (h
->u
.weakdef
!= NULL
)
1699 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
1700 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
1701 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
1702 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
1703 if (ELIMINATE_COPY_RELOCS
|| info
->nocopyreloc
)
1704 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
1708 /* This is a reference to a symbol defined by a dynamic object which
1709 is not a function. */
1711 /* If we are creating a shared library, we must presume that the
1712 only references to the symbol are via the global offset table.
1713 For such cases we need not do anything here; the relocations will
1714 be handled correctly by relocate_section. */
1715 if (bfd_link_pic (info
))
1718 /* If there are no references to this symbol that do not use the
1719 GOT, we don't need to generate a copy reloc. */
1720 if (!h
->non_got_ref
)
1723 /* If -z nocopyreloc was given, we won't generate them either. */
1724 if (info
->nocopyreloc
)
1730 if (ELIMINATE_COPY_RELOCS
)
1732 struct elf_s390_link_hash_entry
* eh
;
1733 struct elf_dyn_relocs
*p
;
1735 eh
= (struct elf_s390_link_hash_entry
*) h
;
1736 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1738 s
= p
->sec
->output_section
;
1739 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1743 /* If we didn't find any dynamic relocs in read-only sections, then
1744 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1752 /* We must allocate the symbol in our .dynbss section, which will
1753 become part of the .bss section of the executable. There will be
1754 an entry for this symbol in the .dynsym section. The dynamic
1755 object will contain position independent code, so all references
1756 from the dynamic object to this symbol will go through the global
1757 offset table. The dynamic linker will use the .dynsym entry to
1758 determine the address it must put in the global offset table, so
1759 both the dynamic object and the regular object will refer to the
1760 same memory location for the variable. */
1762 htab
= elf_s390_hash_table (info
);
1764 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1765 copy the initial value out of the dynamic object and into the
1766 runtime process image. */
1767 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
1769 htab
->srelbss
->size
+= sizeof (Elf32_External_Rela
);
1775 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
1778 /* Allocate space in .plt, .got and associated reloc sections for
1782 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
1784 struct bfd_link_info
*info
;
1785 struct elf_s390_link_hash_table
*htab
;
1786 struct elf_s390_link_hash_entry
*eh
= (struct elf_s390_link_hash_entry
*)h
;
1787 struct elf_dyn_relocs
*p
;
1789 if (h
->root
.type
== bfd_link_hash_indirect
)
1792 info
= (struct bfd_link_info
*) inf
;
1793 htab
= elf_s390_hash_table (info
);
1795 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1796 here if it is defined and referenced in a non-shared object. */
1797 if (s390_is_ifunc_symbol_p (h
) && h
->def_regular
)
1798 return s390_elf_allocate_ifunc_dyn_relocs (info
, h
);
1799 else if (htab
->elf
.dynamic_sections_created
1800 && h
->plt
.refcount
> 0)
1802 /* Make sure this symbol is output as a dynamic symbol.
1803 Undefined weak syms won't yet be marked as dynamic. */
1804 if (h
->dynindx
== -1
1805 && !h
->forced_local
)
1807 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1811 if (bfd_link_pic (info
)
1812 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
1814 asection
*s
= htab
->elf
.splt
;
1816 /* If this is the first .plt entry, make room for the special
1819 s
->size
+= PLT_FIRST_ENTRY_SIZE
;
1821 h
->plt
.offset
= s
->size
;
1823 /* If this symbol is not defined in a regular file, and we are
1824 not generating a shared library, then set the symbol to this
1825 location in the .plt. This is required to make function
1826 pointers compare as equal between the normal executable and
1827 the shared library. */
1828 if (! bfd_link_pic (info
)
1831 h
->root
.u
.def
.section
= s
;
1832 h
->root
.u
.def
.value
= h
->plt
.offset
;
1835 /* Make room for this entry. */
1836 s
->size
+= PLT_ENTRY_SIZE
;
1838 /* We also need to make an entry in the .got.plt section, which
1839 will be placed in the .got section by the linker script. */
1840 htab
->elf
.sgotplt
->size
+= GOT_ENTRY_SIZE
;
1842 /* We also need to make an entry in the .rela.plt section. */
1843 htab
->elf
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
1847 h
->plt
.offset
= (bfd_vma
) -1;
1849 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1854 h
->plt
.offset
= (bfd_vma
) -1;
1856 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1859 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1860 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1861 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1862 we can save the dynamic TLS relocation. */
1863 if (h
->got
.refcount
> 0
1864 && !bfd_link_pic (info
)
1866 && elf_s390_hash_entry(h
)->tls_type
>= GOT_TLS_IE
)
1868 if (elf_s390_hash_entry(h
)->tls_type
== GOT_TLS_IE_NLT
)
1869 /* For the GOTIE access without a literal pool entry the offset has
1870 to be stored somewhere. The immediate value in the instruction
1871 is not bit enough so the value is stored in the got. */
1873 h
->got
.offset
= htab
->elf
.sgot
->size
;
1874 htab
->elf
.sgot
->size
+= GOT_ENTRY_SIZE
;
1877 h
->got
.offset
= (bfd_vma
) -1;
1879 else if (h
->got
.refcount
> 0)
1883 int tls_type
= elf_s390_hash_entry(h
)->tls_type
;
1885 /* Make sure this symbol is output as a dynamic symbol.
1886 Undefined weak syms won't yet be marked as dynamic. */
1887 if (h
->dynindx
== -1
1888 && !h
->forced_local
)
1890 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1895 h
->got
.offset
= s
->size
;
1896 s
->size
+= GOT_ENTRY_SIZE
;
1897 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1898 if (tls_type
== GOT_TLS_GD
)
1899 s
->size
+= GOT_ENTRY_SIZE
;
1900 dyn
= htab
->elf
.dynamic_sections_created
;
1901 /* R_390_TLS_IE32 needs one dynamic relocation,
1902 R_390_TLS_GD32 needs one if local symbol and two if global. */
1903 if ((tls_type
== GOT_TLS_GD
&& h
->dynindx
== -1)
1904 || tls_type
>= GOT_TLS_IE
)
1905 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
1906 else if (tls_type
== GOT_TLS_GD
)
1907 htab
->elf
.srelgot
->size
+= 2 * sizeof (Elf32_External_Rela
);
1908 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
1909 || h
->root
.type
!= bfd_link_hash_undefweak
)
1910 && (bfd_link_pic (info
)
1911 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
1912 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
1915 h
->got
.offset
= (bfd_vma
) -1;
1917 if (eh
->dyn_relocs
== NULL
)
1920 /* In the shared -Bsymbolic case, discard space allocated for
1921 dynamic pc-relative relocs against symbols which turn out to be
1922 defined in regular objects. For the normal shared case, discard
1923 space for pc-relative relocs that have become local due to symbol
1924 visibility changes. */
1926 if (bfd_link_pic (info
))
1928 if (SYMBOL_CALLS_LOCAL (info
, h
))
1930 struct elf_dyn_relocs
**pp
;
1932 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
1934 p
->count
-= p
->pc_count
;
1943 /* Also discard relocs on undefined weak syms with non-default
1945 if (eh
->dyn_relocs
!= NULL
1946 && h
->root
.type
== bfd_link_hash_undefweak
)
1948 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
1949 eh
->dyn_relocs
= NULL
;
1951 /* Make sure undefined weak symbols are output as a dynamic
1953 else if (h
->dynindx
== -1
1954 && !h
->forced_local
)
1956 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1961 else if (ELIMINATE_COPY_RELOCS
)
1963 /* For the non-shared case, discard space for relocs against
1964 symbols which turn out to need copy relocs or are not
1970 || (htab
->elf
.dynamic_sections_created
1971 && (h
->root
.type
== bfd_link_hash_undefweak
1972 || h
->root
.type
== bfd_link_hash_undefined
))))
1974 /* Make sure this symbol is output as a dynamic symbol.
1975 Undefined weak syms won't yet be marked as dynamic. */
1976 if (h
->dynindx
== -1
1977 && !h
->forced_local
)
1979 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1983 /* If that succeeded, we know we'll be keeping all the
1985 if (h
->dynindx
!= -1)
1989 eh
->dyn_relocs
= NULL
;
1994 /* Finally, allocate space. */
1995 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1997 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
1999 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2005 /* Find any dynamic relocs that apply to read-only sections. */
2008 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
2010 struct elf_s390_link_hash_entry
*eh
;
2011 struct elf_dyn_relocs
*p
;
2013 eh
= (struct elf_s390_link_hash_entry
*) h
;
2014 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2016 asection
*s
= p
->sec
->output_section
;
2018 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
2020 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
2022 info
->flags
|= DF_TEXTREL
;
2024 /* Not an error, just cut short the traversal. */
2031 /* Set the sizes of the dynamic sections. */
2034 elf_s390_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2035 struct bfd_link_info
*info
)
2037 struct elf_s390_link_hash_table
*htab
;
2043 htab
= elf_s390_hash_table (info
);
2044 dynobj
= htab
->elf
.dynobj
;
2048 if (htab
->elf
.dynamic_sections_created
)
2050 /* Set the contents of the .interp section to the interpreter. */
2051 if (bfd_link_executable (info
) && !info
->nointerp
)
2053 s
= bfd_get_linker_section (dynobj
, ".interp");
2056 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2057 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2061 /* Set up .got offsets for local syms, and space for local dynamic
2063 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
2065 bfd_signed_vma
*local_got
;
2066 bfd_signed_vma
*end_local_got
;
2067 char *local_tls_type
;
2068 bfd_size_type locsymcount
;
2069 Elf_Internal_Shdr
*symtab_hdr
;
2071 struct plt_entry
*local_plt
;
2074 if (! is_s390_elf (ibfd
))
2077 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2079 struct elf_dyn_relocs
*p
;
2081 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
2083 if (!bfd_is_abs_section (p
->sec
)
2084 && bfd_is_abs_section (p
->sec
->output_section
))
2086 /* Input section has been discarded, either because
2087 it is a copy of a linkonce section or due to
2088 linker script /DISCARD/, so we'll be discarding
2091 else if (p
->count
!= 0)
2093 srela
= elf_section_data (p
->sec
)->sreloc
;
2094 srela
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2095 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2096 info
->flags
|= DF_TEXTREL
;
2101 local_got
= elf_local_got_refcounts (ibfd
);
2105 symtab_hdr
= &elf_symtab_hdr (ibfd
);
2106 locsymcount
= symtab_hdr
->sh_info
;
2107 end_local_got
= local_got
+ locsymcount
;
2108 local_tls_type
= elf_s390_local_got_tls_type (ibfd
);
2110 srela
= htab
->elf
.srelgot
;
2111 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
2115 *local_got
= s
->size
;
2116 s
->size
+= GOT_ENTRY_SIZE
;
2117 if (*local_tls_type
== GOT_TLS_GD
)
2118 s
->size
+= GOT_ENTRY_SIZE
;
2119 if (bfd_link_pic (info
))
2120 srela
->size
+= sizeof (Elf32_External_Rela
);
2123 *local_got
= (bfd_vma
) -1;
2125 local_plt
= elf_s390_local_plt (ibfd
);
2126 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
2128 if (local_plt
[i
].plt
.refcount
> 0)
2130 local_plt
[i
].plt
.offset
= htab
->elf
.iplt
->size
;
2131 htab
->elf
.iplt
->size
+= PLT_ENTRY_SIZE
;
2132 htab
->elf
.igotplt
->size
+= GOT_ENTRY_SIZE
;
2133 htab
->elf
.irelplt
->size
+= RELA_ENTRY_SIZE
;
2136 local_plt
[i
].plt
.offset
= (bfd_vma
) -1;
2140 if (htab
->tls_ldm_got
.refcount
> 0)
2142 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2144 htab
->tls_ldm_got
.offset
= htab
->elf
.sgot
->size
;
2145 htab
->elf
.sgot
->size
+= 2 * GOT_ENTRY_SIZE
;
2146 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
2149 htab
->tls_ldm_got
.offset
= -1;
2151 /* Allocate global sym .plt and .got entries, and space for global
2152 sym dynamic relocs. */
2153 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
2155 /* We now have determined the sizes of the various dynamic sections.
2156 Allocate memory for them. */
2158 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2160 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2163 if (s
== htab
->elf
.splt
2164 || s
== htab
->elf
.sgot
2165 || s
== htab
->elf
.sgotplt
2166 || s
== htab
->sdynbss
2167 || s
== htab
->elf
.iplt
2168 || s
== htab
->elf
.igotplt
2169 || s
== htab
->irelifunc
)
2171 /* Strip this section if we don't need it; see the
2174 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
2179 /* We use the reloc_count field as a counter if we need
2180 to copy relocs into the output file. */
2185 /* It's not one of our sections, so don't allocate space. */
2191 /* If we don't need this section, strip it from the
2192 output file. This is to handle .rela.bss and
2193 .rela.plt. We must create it in
2194 create_dynamic_sections, because it must be created
2195 before the linker maps input sections to output
2196 sections. The linker does that before
2197 adjust_dynamic_symbol is called, and it is that
2198 function which decides whether anything needs to go
2199 into these sections. */
2201 s
->flags
|= SEC_EXCLUDE
;
2205 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2208 /* Allocate memory for the section contents. We use bfd_zalloc
2209 here in case unused entries are not reclaimed before the
2210 section's contents are written out. This should not happen,
2211 but this way if it does, we get a R_390_NONE reloc instead
2213 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
2214 if (s
->contents
== NULL
)
2218 if (htab
->elf
.dynamic_sections_created
)
2220 /* Add some entries to the .dynamic section. We fill in the
2221 values later, in elf_s390_finish_dynamic_sections, but we
2222 must add the entries now so that we get the correct size for
2223 the .dynamic section. The DT_DEBUG entry is filled in by the
2224 dynamic linker and used by the debugger. */
2225 #define add_dynamic_entry(TAG, VAL) \
2226 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2228 if (bfd_link_executable (info
))
2230 if (!add_dynamic_entry (DT_DEBUG
, 0))
2234 if (htab
->elf
.splt
->size
!= 0)
2236 if (!add_dynamic_entry (DT_PLTGOT
, 0)
2237 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
2238 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2239 || !add_dynamic_entry (DT_JMPREL
, 0))
2245 if (!add_dynamic_entry (DT_RELA
, 0)
2246 || !add_dynamic_entry (DT_RELASZ
, 0)
2247 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
2250 /* If any dynamic relocs apply to a read-only section,
2251 then we need a DT_TEXTREL entry. */
2252 if ((info
->flags
& DF_TEXTREL
) == 0)
2253 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
2255 if ((info
->flags
& DF_TEXTREL
) != 0)
2257 if (!add_dynamic_entry (DT_TEXTREL
, 0))
2262 #undef add_dynamic_entry
2267 /* Return the base VMA address which should be subtracted from real addresses
2268 when resolving @dtpoff relocation.
2269 This is PT_TLS segment p_vaddr. */
2272 dtpoff_base (struct bfd_link_info
*info
)
2274 /* If tls_sec is NULL, we should have signalled an error already. */
2275 if (elf_hash_table (info
)->tls_sec
== NULL
)
2277 return elf_hash_table (info
)->tls_sec
->vma
;
2280 /* Return the relocation value for @tpoff relocation
2281 if STT_TLS virtual address is ADDRESS. */
2284 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
2286 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
2288 /* If tls_sec is NULL, we should have signalled an error already. */
2289 if (htab
->tls_sec
== NULL
)
2291 return htab
->tls_size
+ htab
->tls_sec
->vma
- address
;
2294 /* Complain if TLS instruction relocation is against an invalid
2298 invalid_tls_insn (bfd
*input_bfd
,
2299 asection
*input_section
,
2300 Elf_Internal_Rela
*rel
)
2302 reloc_howto_type
*howto
;
2304 howto
= elf_howto_table
+ ELF32_R_TYPE (rel
->r_info
);
2305 (*_bfd_error_handler
)
2306 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2309 (long) rel
->r_offset
,
2311 bfd_set_error (bfd_error_bad_value
);
2314 /* Relocate a 390 ELF section. */
2317 elf_s390_relocate_section (bfd
*output_bfd
,
2318 struct bfd_link_info
*info
,
2320 asection
*input_section
,
2322 Elf_Internal_Rela
*relocs
,
2323 Elf_Internal_Sym
*local_syms
,
2324 asection
**local_sections
)
2326 struct elf_s390_link_hash_table
*htab
;
2327 Elf_Internal_Shdr
*symtab_hdr
;
2328 struct elf_link_hash_entry
**sym_hashes
;
2329 bfd_vma
*local_got_offsets
;
2330 Elf_Internal_Rela
*rel
;
2331 Elf_Internal_Rela
*relend
;
2333 BFD_ASSERT (is_s390_elf (input_bfd
));
2335 htab
= elf_s390_hash_table (info
);
2336 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
2337 sym_hashes
= elf_sym_hashes (input_bfd
);
2338 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2341 relend
= relocs
+ input_section
->reloc_count
;
2342 for (; rel
< relend
; rel
++)
2344 unsigned int r_type
;
2345 reloc_howto_type
*howto
;
2346 unsigned long r_symndx
;
2347 struct elf_link_hash_entry
*h
;
2348 Elf_Internal_Sym
*sym
;
2352 bfd_boolean unresolved_reloc
;
2353 bfd_reloc_status_type r
;
2355 asection
*base_got
= htab
->elf
.sgot
;
2357 r_type
= ELF32_R_TYPE (rel
->r_info
);
2358 if (r_type
== (int) R_390_GNU_VTINHERIT
2359 || r_type
== (int) R_390_GNU_VTENTRY
)
2361 if (r_type
>= (int) R_390_max
)
2363 bfd_set_error (bfd_error_bad_value
);
2367 howto
= elf_howto_table
+ r_type
;
2368 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2373 unresolved_reloc
= FALSE
;
2374 if (r_symndx
< symtab_hdr
->sh_info
)
2376 sym
= local_syms
+ r_symndx
;
2377 sec
= local_sections
[r_symndx
];
2378 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
2380 struct plt_entry
*local_plt
= elf_s390_local_plt (input_bfd
);
2381 if (local_plt
== NULL
)
2384 /* Address of the PLT slot. */
2385 relocation
= (htab
->elf
.iplt
->output_section
->vma
2386 + htab
->elf
.iplt
->output_offset
2387 + local_plt
[r_symndx
].plt
.offset
);
2391 case R_390_PLTOFF16
:
2392 case R_390_PLTOFF32
:
2393 relocation
-= htab
->elf
.sgot
->output_section
->vma
;
2395 case R_390_GOTPLT12
:
2396 case R_390_GOTPLT16
:
2397 case R_390_GOTPLT20
:
2398 case R_390_GOTPLT32
:
2399 case R_390_GOTPLTENT
:
2406 /* Write the PLT slot address into the GOT slot. */
2407 bfd_put_32 (output_bfd
, relocation
,
2408 htab
->elf
.sgot
->contents
+
2409 local_got_offsets
[r_symndx
]);
2410 relocation
= (local_got_offsets
[r_symndx
] +
2411 htab
->elf
.sgot
->output_offset
);
2413 if (r_type
== R_390_GOTENT
|| r_type
== R_390_GOTPLTENT
)
2414 relocation
+= htab
->elf
.sgot
->output_section
->vma
;
2420 /* The output section is needed later in
2421 finish_dynamic_section when creating the dynamic
2423 local_plt
[r_symndx
].sec
= sec
;
2427 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2431 bfd_boolean warned ATTRIBUTE_UNUSED
;
2432 bfd_boolean ignored ATTRIBUTE_UNUSED
;
2434 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2435 r_symndx
, symtab_hdr
, sym_hashes
,
2437 unresolved_reloc
, warned
, ignored
);
2440 if (sec
!= NULL
&& discarded_section (sec
))
2441 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2442 rel
, 1, relend
, howto
, 0, contents
);
2444 if (bfd_link_relocatable (info
))
2449 case R_390_GOTPLT12
:
2450 case R_390_GOTPLT16
:
2451 case R_390_GOTPLT20
:
2452 case R_390_GOTPLT32
:
2453 case R_390_GOTPLTENT
:
2454 /* There are three cases for a GOTPLT relocation. 1) The
2455 relocation is against the jump slot entry of a plt that
2456 will get emitted to the output file. 2) The relocation
2457 is against the jump slot of a plt entry that has been
2458 removed. elf_s390_adjust_gotplt has created a GOT entry
2459 as replacement. 3) The relocation is against a local symbol.
2460 Cases 2) and 3) are the same as the GOT relocation code
2461 so we just have to test for case 1 and fall through for
2463 if (h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
2467 if (s390_is_ifunc_symbol_p (h
))
2469 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
;
2470 relocation
= (plt_index
* GOT_ENTRY_SIZE
+
2471 htab
->elf
.igotplt
->output_offset
);
2472 if (r_type
== R_390_GOTPLTENT
)
2473 relocation
+= htab
->elf
.igotplt
->output_section
->vma
;
2478 Current offset - size first entry / entry size. */
2479 plt_index
= (h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
) /
2482 /* Offset in GOT is PLT index plus GOT headers(3)
2483 times 4, addr & GOT addr. */
2484 relocation
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
2485 if (r_type
== R_390_GOTPLTENT
)
2486 relocation
+= htab
->elf
.sgot
->output_section
->vma
;
2488 unresolved_reloc
= FALSE
;
2498 /* Relocation is to the entry for this symbol in the global
2500 if (base_got
== NULL
)
2507 off
= h
->got
.offset
;
2508 dyn
= htab
->elf
.dynamic_sections_created
;
2510 if (s390_is_ifunc_symbol_p (h
))
2512 BFD_ASSERT (h
->plt
.offset
!= (bfd_vma
) -1);
2513 if (off
== (bfd_vma
)-1)
2515 /* No explicit GOT usage so redirect to the
2517 base_got
= htab
->elf
.igotplt
;
2518 off
= h
->plt
.offset
/ PLT_ENTRY_SIZE
* GOT_ENTRY_SIZE
;
2522 /* Explicit GOT slots must contain the address
2523 of the PLT slot. This will be handled in
2524 finish_dynamic_symbol. */
2527 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2528 bfd_link_pic (info
),
2530 || (bfd_link_pic (info
)
2531 && SYMBOL_REFERENCES_LOCAL (info
, h
))
2532 || (ELF_ST_VISIBILITY (h
->other
)
2533 && h
->root
.type
== bfd_link_hash_undefweak
))
2536 /* This is actually a static link, or it is a
2537 -Bsymbolic link and the symbol is defined
2538 locally, or the symbol was forced to be local
2539 because of a version file. We must initialize
2540 this entry in the global offset table. Since the
2541 offset must always be a multiple of 2, we use the
2542 least significant bit to record whether we have
2543 initialized it already.
2545 When doing a dynamic link, we create a .rel.got
2546 relocation entry to initialize the value. This
2547 is done in the finish_dynamic_symbol routine. */
2552 bfd_put_32 (output_bfd
, relocation
,
2553 base_got
->contents
+ off
);
2558 && bfd_link_pic (info
)
2559 && SYMBOL_REFERENCES_LOCAL (info
, h
))
2560 /* lrl rx,sym@GOTENT -> larl rx, sym */
2561 && ((r_type
== R_390_GOTENT
2562 && (bfd_get_16 (input_bfd
,
2563 contents
+ rel
->r_offset
- 2)
2564 & 0xff0f) == 0xc40d)
2565 /* ly rx, sym@GOT(r12) -> larl rx, sym */
2566 || (r_type
== R_390_GOT20
2567 && (bfd_get_32 (input_bfd
,
2568 contents
+ rel
->r_offset
- 2)
2569 & 0xff00f000) == 0xe300c000
2570 && bfd_get_8 (input_bfd
,
2571 contents
+ rel
->r_offset
+ 3) == 0x58)))
2573 unsigned short new_insn
=
2574 (0xc000 | (bfd_get_8 (input_bfd
,
2575 contents
+ rel
->r_offset
- 1) & 0xf0));
2576 bfd_put_16 (output_bfd
, new_insn
,
2577 contents
+ rel
->r_offset
- 2);
2578 r_type
= R_390_PC32DBL
;
2580 howto
= elf_howto_table
+ r_type
;
2581 relocation
= h
->root
.u
.def
.value
2582 + h
->root
.u
.def
.section
->output_section
->vma
2583 + h
->root
.u
.def
.section
->output_offset
;
2588 unresolved_reloc
= FALSE
;
2592 if (local_got_offsets
== NULL
)
2595 off
= local_got_offsets
[r_symndx
];
2597 /* The offset must always be a multiple of 4. We use
2598 the least significant bit to record whether we have
2599 already generated the necessary reloc. */
2604 bfd_put_32 (output_bfd
, relocation
,
2605 htab
->elf
.sgot
->contents
+ off
);
2607 if (bfd_link_pic (info
))
2610 Elf_Internal_Rela outrel
;
2613 srelgot
= htab
->elf
.srelgot
;
2614 if (srelgot
== NULL
)
2617 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
2618 + htab
->elf
.sgot
->output_offset
2620 outrel
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
2621 outrel
.r_addend
= relocation
;
2622 loc
= srelgot
->contents
;
2623 loc
+= srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
2624 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
2627 local_got_offsets
[r_symndx
] |= 1;
2631 if (off
>= (bfd_vma
) -2)
2634 relocation
= base_got
->output_offset
+ off
;
2636 /* For @GOTENT the relocation is against the offset between
2637 the instruction and the symbols entry in the GOT and not
2638 between the start of the GOT and the symbols entry. We
2639 add the vma of the GOT to get the correct value. */
2640 if ( r_type
== R_390_GOTENT
2641 || r_type
== R_390_GOTPLTENT
)
2642 relocation
+= base_got
->output_section
->vma
;
2646 case R_390_GOTOFF16
:
2647 case R_390_GOTOFF32
:
2648 /* Relocation is relative to the start of the global offset
2652 && s390_is_ifunc_symbol_p (h
)
2654 && !bfd_link_executable (info
))
2656 relocation
= (htab
->elf
.iplt
->output_section
->vma
2657 + htab
->elf
.iplt
->output_offset
2659 - htab
->elf
.sgot
->output_section
->vma
);
2663 /* Note that sgot->output_offset is not involved in this
2664 calculation. We always want the start of .got. If we
2665 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2666 permitted by the ABI, we might have to change this
2668 relocation
-= htab
->elf
.sgot
->output_section
->vma
;
2672 case R_390_GOTPCDBL
:
2673 /* Use global offset table as symbol value. */
2674 relocation
= htab
->elf
.sgot
->output_section
->vma
;
2675 unresolved_reloc
= FALSE
;
2678 case R_390_PLT12DBL
:
2679 case R_390_PLT16DBL
:
2680 case R_390_PLT24DBL
:
2681 case R_390_PLT32DBL
:
2683 /* Relocation is to the entry for this symbol in the
2684 procedure linkage table. */
2686 /* Resolve a PLT32 reloc against a local symbol directly,
2687 without using the procedure linkage table. */
2691 if (h
->plt
.offset
== (bfd_vma
) -1
2692 || (htab
->elf
.splt
== NULL
&& htab
->elf
.iplt
== NULL
))
2694 /* We didn't make a PLT entry for this symbol. This
2695 happens when statically linking PIC code, or when
2696 using -Bsymbolic. */
2700 if (s390_is_ifunc_symbol_p (h
))
2701 relocation
= (htab
->elf
.iplt
->output_section
->vma
2702 + htab
->elf
.iplt
->output_offset
2705 relocation
= (htab
->elf
.splt
->output_section
->vma
2706 + htab
->elf
.splt
->output_offset
2708 unresolved_reloc
= FALSE
;
2711 case R_390_PLTOFF16
:
2712 case R_390_PLTOFF32
:
2713 /* Relocation is to the entry for this symbol in the
2714 procedure linkage table relative to the start of the GOT. */
2716 /* For local symbols or if we didn't make a PLT entry for
2717 this symbol resolve the symbol directly. */
2719 || h
->plt
.offset
== (bfd_vma
) -1
2720 || (htab
->elf
.splt
== NULL
&& !s390_is_ifunc_symbol_p (h
)))
2722 relocation
-= htab
->elf
.sgot
->output_section
->vma
;
2726 if (s390_is_ifunc_symbol_p (h
))
2727 relocation
= (htab
->elf
.iplt
->output_section
->vma
2728 + htab
->elf
.iplt
->output_offset
2730 - htab
->elf
.sgot
->output_section
->vma
);
2732 relocation
= (htab
->elf
.splt
->output_section
->vma
2733 + htab
->elf
.splt
->output_offset
2735 - htab
->elf
.sgot
->output_section
->vma
);
2736 unresolved_reloc
= FALSE
;
2749 && s390_is_ifunc_symbol_p (h
)
2752 if (!bfd_link_pic (info
) || !h
->non_got_ref
)
2754 /* For a non-shared object STT_GNU_IFUNC symbol must
2756 relocation
= (htab
->elf
.iplt
->output_section
->vma
2757 + htab
->elf
.iplt
->output_offset
2763 /* For shared objects a runtime relocation is needed. */
2765 Elf_Internal_Rela outrel
;
2768 /* Need a dynamic relocation to get the real function
2770 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
2774 if (outrel
.r_offset
== (bfd_vma
) -1
2775 || outrel
.r_offset
== (bfd_vma
) -2)
2778 outrel
.r_offset
+= (input_section
->output_section
->vma
2779 + input_section
->output_offset
);
2781 if (h
->dynindx
== -1
2783 || bfd_link_executable (info
))
2785 /* This symbol is resolved locally. */
2786 outrel
.r_info
= ELF32_R_INFO (0, R_390_IRELATIVE
);
2787 outrel
.r_addend
= (h
->root
.u
.def
.value
2788 + h
->root
.u
.def
.section
->output_section
->vma
2789 + h
->root
.u
.def
.section
->output_offset
);
2793 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2794 outrel
.r_addend
= 0;
2797 sreloc
= htab
->elf
.irelifunc
;
2798 elf_append_rela (output_bfd
, sreloc
, &outrel
);
2800 /* If this reloc is against an external symbol, we
2801 do not want to fiddle with the addend. Otherwise,
2802 we need to include the symbol value so that it
2803 becomes an addend for the dynamic reloc. For an
2804 internal symbol, we have updated addend. */
2809 if ((input_section
->flags
& SEC_ALLOC
) == 0)
2812 if ((bfd_link_pic (info
)
2814 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2815 || h
->root
.type
!= bfd_link_hash_undefweak
)
2816 && ((r_type
!= R_390_PC16
2817 && r_type
!= R_390_PC12DBL
2818 && r_type
!= R_390_PC16DBL
2819 && r_type
!= R_390_PC24DBL
2820 && r_type
!= R_390_PC32DBL
2821 && r_type
!= R_390_PC32
)
2822 || !SYMBOL_CALLS_LOCAL (info
, h
)))
2823 || (ELIMINATE_COPY_RELOCS
2824 && !bfd_link_pic (info
)
2830 || h
->root
.type
== bfd_link_hash_undefweak
2831 || h
->root
.type
== bfd_link_hash_undefined
)))
2833 Elf_Internal_Rela outrel
;
2834 bfd_boolean skip
, relocate
;
2838 /* When generating a shared object, these relocations
2839 are copied into the output file to be resolved at run
2846 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2848 if (outrel
.r_offset
== (bfd_vma
) -1)
2850 else if (outrel
.r_offset
== (bfd_vma
) -2)
2851 skip
= TRUE
, relocate
= TRUE
;
2852 outrel
.r_offset
+= (input_section
->output_section
->vma
2853 + input_section
->output_offset
);
2856 memset (&outrel
, 0, sizeof outrel
);
2859 && (r_type
== R_390_PC16
2860 || r_type
== R_390_PC12DBL
2861 || r_type
== R_390_PC16DBL
2862 || r_type
== R_390_PC24DBL
2863 || r_type
== R_390_PC32DBL
2864 || r_type
== R_390_PC32
2865 || !bfd_link_pic (info
)
2866 || !SYMBOLIC_BIND (info
, h
)
2867 || !h
->def_regular
))
2869 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2870 outrel
.r_addend
= rel
->r_addend
;
2874 /* This symbol is local, or marked to become local. */
2875 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2876 if (r_type
== R_390_32
)
2879 outrel
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
2885 if (bfd_is_abs_section (sec
))
2887 else if (sec
== NULL
|| sec
->owner
== NULL
)
2889 bfd_set_error(bfd_error_bad_value
);
2896 osec
= sec
->output_section
;
2897 sindx
= elf_section_data (osec
)->dynindx
;
2900 osec
= htab
->elf
.text_index_section
;
2901 sindx
= elf_section_data (osec
)->dynindx
;
2903 BFD_ASSERT (sindx
!= 0);
2905 /* We are turning this relocation into one
2906 against a section symbol, so subtract out
2907 the output section's address but not the
2908 offset of the input section in the output
2910 outrel
.r_addend
-= osec
->vma
;
2912 outrel
.r_info
= ELF32_R_INFO (sindx
, r_type
);
2916 sreloc
= elf_section_data (input_section
)->sreloc
;
2920 loc
= sreloc
->contents
;
2921 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
2922 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
2924 /* If this reloc is against an external symbol, we do
2925 not want to fiddle with the addend. Otherwise, we
2926 need to include the symbol value so that it becomes
2927 an addend for the dynamic reloc. */
2933 /* Relocations for tls literal pool entries. */
2934 case R_390_TLS_IE32
:
2935 if (bfd_link_pic (info
))
2937 Elf_Internal_Rela outrel
;
2941 outrel
.r_offset
= rel
->r_offset
2942 + input_section
->output_section
->vma
2943 + input_section
->output_offset
;
2944 outrel
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
2945 sreloc
= elf_section_data (input_section
)->sreloc
;
2948 loc
= sreloc
->contents
;
2949 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
2950 bfd_elf32_swap_reloc_out (output_bfd
, &outrel
, loc
);
2954 case R_390_TLS_GD32
:
2955 case R_390_TLS_GOTIE32
:
2956 r_type
= elf_s390_tls_transition (info
, r_type
, h
== NULL
);
2957 tls_type
= GOT_UNKNOWN
;
2958 if (h
== NULL
&& local_got_offsets
)
2959 tls_type
= elf_s390_local_got_tls_type (input_bfd
) [r_symndx
];
2962 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2963 if (!bfd_link_pic (info
)
2965 && tls_type
>= GOT_TLS_IE
)
2966 r_type
= R_390_TLS_LE32
;
2968 if (r_type
== R_390_TLS_GD32
&& tls_type
>= GOT_TLS_IE
)
2969 r_type
= R_390_TLS_IE32
;
2971 if (r_type
== R_390_TLS_LE32
)
2973 /* This relocation gets optimized away by the local exec
2974 access optimization. */
2975 BFD_ASSERT (! unresolved_reloc
);
2976 bfd_put_32 (output_bfd
, -tpoff (info
, relocation
),
2977 contents
+ rel
->r_offset
);
2981 if (htab
->elf
.sgot
== NULL
)
2985 off
= h
->got
.offset
;
2988 if (local_got_offsets
== NULL
)
2991 off
= local_got_offsets
[r_symndx
];
3000 Elf_Internal_Rela outrel
;
3004 if (htab
->elf
.srelgot
== NULL
)
3007 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
3008 + htab
->elf
.sgot
->output_offset
+ off
);
3010 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
3011 if (r_type
== R_390_TLS_GD32
)
3012 dr_type
= R_390_TLS_DTPMOD
;
3014 dr_type
= R_390_TLS_TPOFF
;
3015 if (dr_type
== R_390_TLS_TPOFF
&& indx
== 0)
3016 outrel
.r_addend
= relocation
- dtpoff_base (info
);
3018 outrel
.r_addend
= 0;
3019 outrel
.r_info
= ELF32_R_INFO (indx
, dr_type
);
3020 loc
= htab
->elf
.srelgot
->contents
;
3021 loc
+= htab
->elf
.srelgot
->reloc_count
++
3022 * sizeof (Elf32_External_Rela
);
3023 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
3025 if (r_type
== R_390_TLS_GD32
)
3029 BFD_ASSERT (! unresolved_reloc
);
3030 bfd_put_32 (output_bfd
,
3031 relocation
- dtpoff_base (info
),
3032 htab
->elf
.sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
3036 outrel
.r_info
= ELF32_R_INFO (indx
, R_390_TLS_DTPOFF
);
3037 outrel
.r_offset
+= GOT_ENTRY_SIZE
;
3038 outrel
.r_addend
= 0;
3039 htab
->elf
.srelgot
->reloc_count
++;
3040 loc
+= sizeof (Elf32_External_Rela
);
3041 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
3048 local_got_offsets
[r_symndx
] |= 1;
3051 if (off
>= (bfd_vma
) -2)
3053 if (r_type
== ELF32_R_TYPE (rel
->r_info
))
3055 relocation
= htab
->elf
.sgot
->output_offset
+ off
;
3056 if (r_type
== R_390_TLS_IE32
|| r_type
== R_390_TLS_IEENT
)
3057 relocation
+= htab
->elf
.sgot
->output_section
->vma
;
3058 unresolved_reloc
= FALSE
;
3062 bfd_put_32 (output_bfd
, htab
->elf
.sgot
->output_offset
+ off
,
3063 contents
+ rel
->r_offset
);
3068 case R_390_TLS_GOTIE12
:
3069 case R_390_TLS_GOTIE20
:
3070 case R_390_TLS_IEENT
:
3073 if (local_got_offsets
== NULL
)
3075 off
= local_got_offsets
[r_symndx
];
3076 if (bfd_link_pic (info
))
3077 goto emit_tls_relocs
;
3081 off
= h
->got
.offset
;
3082 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
3083 if (bfd_link_pic (info
)
3085 || tls_type
< GOT_TLS_IE
)
3086 goto emit_tls_relocs
;
3089 if (htab
->elf
.sgot
== NULL
)
3092 BFD_ASSERT (! unresolved_reloc
);
3093 bfd_put_32 (output_bfd
, -tpoff (info
, relocation
),
3094 htab
->elf
.sgot
->contents
+ off
);
3095 relocation
= htab
->elf
.sgot
->output_offset
+ off
;
3096 if (r_type
== R_390_TLS_IEENT
)
3097 relocation
+= htab
->elf
.sgot
->output_section
->vma
;
3098 unresolved_reloc
= FALSE
;
3101 case R_390_TLS_LDM32
:
3102 if (! bfd_link_pic (info
))
3103 /* The literal pool entry this relocation refers to gets ignored
3104 by the optimized code of the local exec model. Do nothing
3105 and the value will turn out zero. */
3108 if (htab
->elf
.sgot
== NULL
)
3111 off
= htab
->tls_ldm_got
.offset
;
3116 Elf_Internal_Rela outrel
;
3119 if (htab
->elf
.srelgot
== NULL
)
3122 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
3123 + htab
->elf
.sgot
->output_offset
+ off
);
3125 bfd_put_32 (output_bfd
, 0,
3126 htab
->elf
.sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
3127 outrel
.r_info
= ELF32_R_INFO (0, R_390_TLS_DTPMOD
);
3128 outrel
.r_addend
= 0;
3129 loc
= htab
->elf
.srelgot
->contents
;
3130 loc
+= htab
->elf
.srelgot
->reloc_count
++
3131 * sizeof (Elf32_External_Rela
);
3132 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
3133 htab
->tls_ldm_got
.offset
|= 1;
3135 relocation
= htab
->elf
.sgot
->output_offset
+ off
;
3136 unresolved_reloc
= FALSE
;
3139 case R_390_TLS_LE32
:
3140 if (bfd_link_dll (info
))
3142 /* Linking a shared library with non-fpic code requires
3143 a R_390_TLS_TPOFF relocation. */
3144 Elf_Internal_Rela outrel
;
3149 outrel
.r_offset
= rel
->r_offset
3150 + input_section
->output_section
->vma
3151 + input_section
->output_offset
;
3152 if (h
!= NULL
&& h
->dynindx
!= -1)
3156 outrel
.r_info
= ELF32_R_INFO (indx
, R_390_TLS_TPOFF
);
3158 outrel
.r_addend
= relocation
- dtpoff_base (info
);
3160 outrel
.r_addend
= 0;
3161 sreloc
= elf_section_data (input_section
)->sreloc
;
3164 loc
= sreloc
->contents
;
3165 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3166 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
3170 BFD_ASSERT (! unresolved_reloc
);
3171 bfd_put_32 (output_bfd
, -tpoff (info
, relocation
),
3172 contents
+ rel
->r_offset
);
3176 case R_390_TLS_LDO32
:
3177 if (bfd_link_pic (info
) || (input_section
->flags
& SEC_DEBUGGING
))
3178 relocation
-= dtpoff_base (info
);
3180 /* When converting LDO to LE, we must negate. */
3181 relocation
= -tpoff (info
, relocation
);
3184 /* Relocations for tls instructions. */
3185 case R_390_TLS_LOAD
:
3186 case R_390_TLS_GDCALL
:
3187 case R_390_TLS_LDCALL
:
3188 tls_type
= GOT_UNKNOWN
;
3189 if (h
== NULL
&& local_got_offsets
)
3190 tls_type
= elf_s390_local_got_tls_type (input_bfd
) [r_symndx
];
3192 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
3194 if (tls_type
== GOT_TLS_GD
)
3197 if (r_type
== R_390_TLS_LOAD
)
3199 if (!bfd_link_pic (info
) && (h
== NULL
|| h
->dynindx
== -1))
3201 /* IE->LE transition. Four valid cases:
3202 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
3203 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
3204 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
3205 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3206 unsigned int insn
, ry
;
3208 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
3210 if ((insn
& 0xff00f000) == 0x58000000)
3211 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
3212 ry
= (insn
& 0x000f0000);
3213 else if ((insn
& 0xff0f0000) == 0x58000000)
3214 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
3215 ry
= (insn
& 0x0000f000) << 4;
3216 else if ((insn
& 0xff00f000) == 0x5800c000)
3217 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
3218 ry
= (insn
& 0x000f0000);
3219 else if ((insn
& 0xff0f0000) == 0x580c0000)
3220 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3221 ry
= (insn
& 0x0000f000) << 4;
3223 invalid_tls_insn (input_bfd
, input_section
, rel
);
3224 insn
= 0x18000700 | (insn
& 0x00f00000) | ry
;
3225 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
3228 else if (r_type
== R_390_TLS_GDCALL
)
3232 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
3233 if ((insn
& 0xff000fff) != 0x4d000000 &&
3234 (insn
& 0xffff0000) != 0xc0e50000 &&
3235 (insn
& 0xff000000) != 0x0d000000)
3236 invalid_tls_insn (input_bfd
, input_section
, rel
);
3237 if (!bfd_link_pic (info
) && (h
== NULL
|| h
->dynindx
== -1))
3239 if ((insn
& 0xff000000) == 0x0d000000)
3241 /* GD->LE transition.
3242 basr rx, ry -> nopr r7 */
3243 insn
= 0x07070000 | (insn
& 0xffff);
3245 else if ((insn
& 0xff000000) == 0x4d000000)
3247 /* GD->LE transition.
3248 bas %r14,0(%rx,%r13) -> bc 0,0 */
3253 /* GD->LE transition.
3254 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
3256 bfd_put_16 (output_bfd
, 0x0000,
3257 contents
+ rel
->r_offset
+ 4);
3262 /* If basr is used in the pic case to invoke
3263 _tls_get_offset, something went wrong before. */
3264 if ((insn
& 0xff000000) == 0x0d000000)
3265 invalid_tls_insn (input_bfd
, input_section
, rel
);
3267 if ((insn
& 0xff000000) == 0x4d000000)
3269 /* GD->IE transition.
3270 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3275 /* GD->IE transition.
3276 brasl %r14,__tls_get_addr@plt ->
3277 l %r2,0(%r2,%r12) ; bcr 0,0 */
3279 bfd_put_16 (output_bfd
, 0x0700,
3280 contents
+ rel
->r_offset
+ 4);
3283 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
3285 else if (r_type
== R_390_TLS_LDCALL
)
3287 if (!bfd_link_pic (info
))
3291 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
3292 if ((insn
& 0xff000fff) != 0x4d000000 &&
3293 (insn
& 0xffff0000) != 0xc0e50000 &&
3294 (insn
& 0xff000000) != 0x0d000000)
3295 invalid_tls_insn (input_bfd
, input_section
, rel
);
3297 if ((insn
& 0xff000000) == 0x0d000000)
3299 /* LD->LE transition.
3300 basr rx, ry -> nopr r7 */
3301 insn
= 0x07070000 | (insn
& 0xffff);
3303 else if ((insn
& 0xff000000) == 0x4d000000)
3305 /* LD->LE transition.
3306 bas %r14,0(%rx,%r13) -> bc 0,0 */
3311 /* LD->LE transition.
3312 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
3314 bfd_put_16 (output_bfd
, 0x0000,
3315 contents
+ rel
->r_offset
+ 4);
3317 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
3326 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3327 because such sections are not SEC_ALLOC and thus ld.so will
3328 not process them. */
3329 if (unresolved_reloc
3330 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
3332 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
3333 rel
->r_offset
) != (bfd_vma
) -1)
3334 (*_bfd_error_handler
)
3335 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3338 (long) rel
->r_offset
,
3340 h
->root
.root
.string
);
3344 /* When applying a 24 bit reloc we need to start one byte
3345 earlier. Otherwise the 32 bit get/put bfd operations might
3346 access a byte after the actual section. */
3347 if (r_type
== R_390_PC24DBL
3348 || r_type
== R_390_PLT24DBL
)
3351 if (r_type
== R_390_20
3352 || r_type
== R_390_GOT20
3353 || r_type
== R_390_GOTPLT20
3354 || r_type
== R_390_TLS_GOTIE20
)
3356 relocation
+= rel
->r_addend
;
3357 relocation
= (relocation
&0xfff) << 8 | (relocation
&0xff000) >> 12;
3358 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3359 contents
, rel
->r_offset
,
3363 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3364 contents
, rel
->r_offset
,
3365 relocation
, rel
->r_addend
);
3367 if (r
!= bfd_reloc_ok
)
3372 name
= h
->root
.root
.string
;
3375 name
= bfd_elf_string_from_elf_section (input_bfd
,
3376 symtab_hdr
->sh_link
,
3381 name
= bfd_section_name (input_bfd
, sec
);
3384 if (r
== bfd_reloc_overflow
)
3387 if (! ((*info
->callbacks
->reloc_overflow
)
3388 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
3389 (bfd_vma
) 0, input_bfd
, input_section
,
3395 (*_bfd_error_handler
)
3396 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3397 input_bfd
, input_section
,
3398 (long) rel
->r_offset
, name
, (int) r
);
3407 /* Generate the PLT slots together with the dynamic relocations needed
3408 for IFUNC symbols. */
3411 elf_s390_finish_ifunc_symbol (bfd
*output_bfd
,
3412 struct bfd_link_info
*info
,
3413 struct elf_link_hash_entry
*h
,
3414 struct elf_s390_link_hash_table
*htab
,
3415 bfd_vma iplt_offset
,
3416 bfd_vma resolver_address
)
3420 bfd_vma igotiplt_offset
;
3421 Elf_Internal_Rela rela
;
3423 asection
*plt
, *gotplt
, *relplt
;
3424 bfd_vma relative_offset
;
3426 if (htab
->elf
.iplt
== NULL
3427 || htab
->elf
.igotplt
== NULL
3428 || htab
->elf
.irelplt
== NULL
)
3431 gotplt
= htab
->elf
.igotplt
;
3432 relplt
= htab
->elf
.irelplt
;
3434 /* Index of the PLT slot within iplt section. */
3435 iplt_index
= iplt_offset
/ PLT_ENTRY_SIZE
;
3436 plt
= htab
->elf
.iplt
;
3437 /* Offset into the igot.plt section. */
3438 igotiplt_offset
= iplt_index
* GOT_ENTRY_SIZE
;
3439 /* Offset into the got section. */
3440 got_offset
= igotiplt_offset
+ gotplt
->output_offset
;
3442 /* S390 uses halfwords for relative branch calc! */
3443 relative_offset
= - (plt
->output_offset
+
3444 (PLT_ENTRY_SIZE
* iplt_index
) + 18) / 2;
3445 /* If offset is > 32768, branch to a previous branch
3446 390 can only handle +-64 K jumps. */
3447 if ( -32768 > (int) relative_offset
)
3449 = -(unsigned) (((65536 / PLT_ENTRY_SIZE
- 1) * PLT_ENTRY_SIZE
) / 2);
3451 /* Fill in the entry in the procedure linkage table. */
3452 if (!bfd_link_pic (info
))
3454 memcpy (plt
->contents
+ iplt_offset
, elf_s390_plt_entry
,
3457 /* Adjust jump to the first plt entry. */
3458 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3459 plt
->contents
+ iplt_offset
+ 20);
3461 /* Push the GOT offset field. */
3462 bfd_put_32 (output_bfd
,
3463 (gotplt
->output_section
->vma
3465 plt
->contents
+ iplt_offset
+ 24);
3467 else if (got_offset
< 4096)
3469 /* The GOT offset is small enough to be used directly as
3471 memcpy (plt
->contents
+ iplt_offset
,
3472 elf_s390_plt_pic12_entry
,
3475 /* Put in the GOT offset as displacement value. The 0xc000
3476 value comes from the first word of the plt entry. Look
3477 at the elf_s390_plt_pic16_entry content. */
3478 bfd_put_16 (output_bfd
, (bfd_vma
)0xc000 | got_offset
,
3479 plt
->contents
+ iplt_offset
+ 2);
3481 /* Adjust the jump to the first plt entry. */
3482 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3483 plt
->contents
+ iplt_offset
+ 20);
3485 else if (got_offset
< 32768)
3487 /* The GOT offset is too big for a displacement but small
3488 enough to be a signed 16 bit immediate value as it can be
3489 used in an lhi instruction. */
3490 memcpy (plt
->contents
+ iplt_offset
,
3491 elf_s390_plt_pic16_entry
,
3494 /* Put in the GOT offset for the lhi instruction. */
3495 bfd_put_16 (output_bfd
, (bfd_vma
)got_offset
,
3496 plt
->contents
+ iplt_offset
+ 2);
3498 /* Adjust the jump to the first plt entry. */
3499 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3500 plt
->contents
+ iplt_offset
+ 20);
3504 memcpy (plt
->contents
+ iplt_offset
,
3505 elf_s390_plt_pic_entry
,
3508 /* Adjust the jump to the first plt entry. */
3509 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3510 plt
->contents
+ iplt_offset
+ 20);
3512 /* Push the GOT offset field. */
3513 bfd_put_32 (output_bfd
, got_offset
,
3514 plt
->contents
+ iplt_offset
+ 24);
3516 /* Insert offset into reloc. table here. */
3517 bfd_put_32 (output_bfd
, relplt
->output_offset
+
3518 iplt_index
* RELA_ENTRY_SIZE
,
3519 plt
->contents
+ iplt_offset
+ 28);
3521 /* Fill in the entry in the global offset table.
3522 Points to instruction after GOT offset. */
3523 bfd_put_32 (output_bfd
,
3524 (plt
->output_section
->vma
3525 + plt
->output_offset
3528 gotplt
->contents
+ igotiplt_offset
);
3530 /* Fill in the entry in the .rela.plt section. */
3531 rela
.r_offset
= gotplt
->output_section
->vma
+ got_offset
;
3535 || ((bfd_link_executable (info
)
3536 || ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
3539 /* The symbol can be locally resolved. */
3540 rela
.r_info
= ELF32_R_INFO (0, R_390_IRELATIVE
);
3541 rela
.r_addend
= resolver_address
;
3545 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_JMP_SLOT
);
3549 loc
= relplt
->contents
+ iplt_index
* RELA_ENTRY_SIZE
;
3550 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3553 /* Finish up dynamic symbol handling. We set the contents of various
3554 dynamic sections here. */
3557 elf_s390_finish_dynamic_symbol (bfd
*output_bfd
,
3558 struct bfd_link_info
*info
,
3559 struct elf_link_hash_entry
*h
,
3560 Elf_Internal_Sym
*sym
)
3562 struct elf_s390_link_hash_table
*htab
;
3563 struct elf_s390_link_hash_entry
*eh
= (struct elf_s390_link_hash_entry
*)h
;
3565 htab
= elf_s390_hash_table (info
);
3567 if (h
->plt
.offset
!= (bfd_vma
) -1)
3571 Elf_Internal_Rela rela
;
3573 bfd_vma relative_offset
;
3575 /* This symbol has an entry in the procedure linkage table. Set
3577 if (s390_is_ifunc_symbol_p (h
) && h
->def_regular
)
3579 elf_s390_finish_ifunc_symbol (output_bfd
, info
, h
,
3580 htab
, h
->plt
.offset
,
3581 eh
->ifunc_resolver_address
+
3582 eh
->ifunc_resolver_section
->output_offset
+
3583 eh
->ifunc_resolver_section
->output_section
->vma
);
3584 /* Do not return yet. Handling of explicit GOT slots of
3585 IFUNC symbols is below. */
3589 if (h
->dynindx
== -1
3590 || htab
->elf
.splt
== NULL
3591 || htab
->elf
.sgotplt
== NULL
3592 || htab
->elf
.srelplt
== NULL
)
3596 Current offset - size first entry / entry size. */
3597 plt_index
= (h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
) / PLT_ENTRY_SIZE
;
3599 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3601 got_offset
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
3603 /* S390 uses halfwords for relative branch calc! */
3604 relative_offset
= - ((PLT_FIRST_ENTRY_SIZE
+
3605 (PLT_ENTRY_SIZE
* plt_index
) + 18) / 2);
3606 /* If offset is > 32768, branch to a previous branch
3607 390 can only handle +-64 K jumps. */
3608 if ( -32768 > (int) relative_offset
)
3610 = -(unsigned) (((65536 / PLT_ENTRY_SIZE
- 1) * PLT_ENTRY_SIZE
) / 2);
3612 /* Fill in the entry in the procedure linkage table. */
3613 if (!bfd_link_pic (info
))
3615 memcpy (htab
->elf
.splt
->contents
+ h
->plt
.offset
, elf_s390_plt_entry
,
3618 /* Adjust jump to the first plt entry. */
3619 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3620 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 20);
3622 /* Push the GOT offset field. */
3623 bfd_put_32 (output_bfd
,
3624 (htab
->elf
.sgotplt
->output_section
->vma
3625 + htab
->elf
.sgotplt
->output_offset
3627 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 24);
3629 else if (got_offset
< 4096)
3631 /* The GOT offset is small enough to be used directly as
3633 memcpy (htab
->elf
.splt
->contents
+ h
->plt
.offset
,
3634 elf_s390_plt_pic12_entry
,
3637 /* Put in the GOT offset as displacement value. The 0xc000
3638 value comes from the first word of the plt entry. Look
3639 at the elf_s390_plt_pic16_entry content. */
3640 bfd_put_16 (output_bfd
, (bfd_vma
)0xc000 | got_offset
,
3641 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 2);
3643 /* Adjust the jump to the first plt entry. */
3644 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3645 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 20);
3647 else if (got_offset
< 32768)
3649 /* The GOT offset is too big for a displacement but small
3650 enough to be a signed 16 bit immediate value as it can be
3651 used in an lhi instruction. */
3652 memcpy (htab
->elf
.splt
->contents
+ h
->plt
.offset
,
3653 elf_s390_plt_pic16_entry
,
3656 /* Put in the GOT offset for the lhi instruction. */
3657 bfd_put_16 (output_bfd
, (bfd_vma
)got_offset
,
3658 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 2);
3660 /* Adjust the jump to the first plt entry. */
3661 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3662 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 20);
3666 memcpy (htab
->elf
.splt
->contents
+ h
->plt
.offset
,
3667 elf_s390_plt_pic_entry
,
3670 /* Adjust the jump to the first plt entry. */
3671 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3672 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 20);
3674 /* Push the GOT offset field. */
3675 bfd_put_32 (output_bfd
, got_offset
,
3676 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 24);
3678 /* Insert offset into reloc. table here. */
3679 bfd_put_32 (output_bfd
, plt_index
* sizeof (Elf32_External_Rela
),
3680 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 28);
3682 /* Fill in the entry in the global offset table.
3683 Points to instruction after GOT offset. */
3684 bfd_put_32 (output_bfd
,
3685 (htab
->elf
.splt
->output_section
->vma
3686 + htab
->elf
.splt
->output_offset
3689 htab
->elf
.sgotplt
->contents
+ got_offset
);
3691 /* Fill in the entry in the .rela.plt section. */
3692 rela
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
3693 + htab
->elf
.sgotplt
->output_offset
3695 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_JMP_SLOT
);
3697 loc
= htab
->elf
.srelplt
->contents
+ plt_index
* sizeof (Elf32_External_Rela
);
3698 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3700 if (!h
->def_regular
)
3702 /* Mark the symbol as undefined, rather than as defined in
3703 the .plt section. Leave the value alone. This is a clue
3704 for the dynamic linker, to make function pointer
3705 comparisons work between an application and shared
3707 sym
->st_shndx
= SHN_UNDEF
;
3712 if (h
->got
.offset
!= (bfd_vma
) -1
3713 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_GD
3714 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_IE
3715 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_IE_NLT
)
3717 Elf_Internal_Rela rela
;
3720 /* This symbol has an entry in the global offset table. Set it
3723 if (htab
->elf
.sgot
== NULL
|| htab
->elf
.srelgot
== NULL
)
3726 rela
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
3727 + htab
->elf
.sgot
->output_offset
3728 + (h
->got
.offset
&~ (bfd_vma
) 1));
3730 /* If this is a static link, or it is a -Bsymbolic link and the
3731 symbol is defined locally or was forced to be local because
3732 of a version file, we just want to emit a RELATIVE reloc.
3733 The entry in the global offset table will already have been
3734 initialized in the relocate_section function. */
3735 if (h
->def_regular
&& s390_is_ifunc_symbol_p (h
))
3737 if (bfd_link_pic (info
))
3739 /* An explicit GOT slot usage needs GLOB_DAT. If the
3740 symbol references local the implicit got.iplt slot
3741 will be used and the IRELATIVE reloc has been created
3747 /* For non-shared objects explicit GOT slots must be
3748 filled with the PLT slot address for pointer
3749 equality reasons. */
3750 bfd_put_32 (output_bfd
, (htab
->elf
.iplt
->output_section
->vma
3751 + htab
->elf
.iplt
->output_offset
3753 htab
->elf
.sgot
->contents
+ h
->got
.offset
);
3757 else if (bfd_link_pic (info
)
3758 && SYMBOL_REFERENCES_LOCAL (info
, h
))
3760 /* If this is a static link, or it is a -Bsymbolic link and
3761 the symbol is defined locally or was forced to be local
3762 because of a version file, we just want to emit a
3763 RELATIVE reloc. The entry in the global offset table
3764 will already have been initialized in the
3765 relocate_section function. */
3766 if (!h
->def_regular
)
3768 BFD_ASSERT((h
->got
.offset
& 1) != 0);
3769 rela
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
3770 rela
.r_addend
= (h
->root
.u
.def
.value
3771 + h
->root
.u
.def
.section
->output_section
->vma
3772 + h
->root
.u
.def
.section
->output_offset
);
3776 BFD_ASSERT((h
->got
.offset
& 1) == 0);
3778 bfd_put_32 (output_bfd
, (bfd_vma
) 0, htab
->elf
.sgot
->contents
+ h
->got
.offset
);
3779 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_GLOB_DAT
);
3783 loc
= htab
->elf
.srelgot
->contents
;
3784 loc
+= htab
->elf
.srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3785 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3790 Elf_Internal_Rela rela
;
3793 /* This symbols needs a copy reloc. Set it up. */
3795 if (h
->dynindx
== -1
3796 || (h
->root
.type
!= bfd_link_hash_defined
3797 && h
->root
.type
!= bfd_link_hash_defweak
)
3798 || htab
->srelbss
== NULL
)
3801 rela
.r_offset
= (h
->root
.u
.def
.value
3802 + h
->root
.u
.def
.section
->output_section
->vma
3803 + h
->root
.u
.def
.section
->output_offset
);
3804 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_COPY
);
3806 loc
= htab
->srelbss
->contents
;
3807 loc
+= htab
->srelbss
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3808 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3811 /* Mark some specially defined symbols as absolute. */
3812 if (h
== htab
->elf
.hdynamic
3813 || h
== htab
->elf
.hgot
3814 || h
== htab
->elf
.hplt
)
3815 sym
->st_shndx
= SHN_ABS
;
3820 /* Used to decide how to sort relocs in an optimal manner for the
3821 dynamic linker, before writing them out. */
3823 static enum elf_reloc_type_class
3824 elf_s390_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3825 const asection
*rel_sec ATTRIBUTE_UNUSED
,
3826 const Elf_Internal_Rela
*rela
)
3828 bfd
*abfd
= info
->output_bfd
;
3829 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3830 struct elf_s390_link_hash_table
*htab
= elf_s390_hash_table (info
);
3831 unsigned long r_symndx
= ELF32_R_SYM (rela
->r_info
);
3832 Elf_Internal_Sym sym
;
3834 if (htab
->elf
.dynsym
== NULL
3835 || !bed
->s
->swap_symbol_in (abfd
,
3836 (htab
->elf
.dynsym
->contents
3837 + r_symndx
* bed
->s
->sizeof_sym
),
3841 /* Check relocation against STT_GNU_IFUNC symbol. */
3842 if (ELF_ST_TYPE (sym
.st_info
) == STT_GNU_IFUNC
)
3843 return reloc_class_ifunc
;
3845 switch ((int) ELF32_R_TYPE (rela
->r_info
))
3847 case R_390_RELATIVE
:
3848 return reloc_class_relative
;
3849 case R_390_JMP_SLOT
:
3850 return reloc_class_plt
;
3852 return reloc_class_copy
;
3854 return reloc_class_normal
;
3858 /* Finish up the dynamic sections. */
3861 elf_s390_finish_dynamic_sections (bfd
*output_bfd
,
3862 struct bfd_link_info
*info
)
3864 struct elf_s390_link_hash_table
*htab
;
3870 htab
= elf_s390_hash_table (info
);
3871 dynobj
= htab
->elf
.dynobj
;
3872 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
3874 if (htab
->elf
.dynamic_sections_created
)
3876 Elf32_External_Dyn
*dyncon
, *dynconend
;
3878 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
3881 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3882 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3883 for (; dyncon
< dynconend
; dyncon
++)
3885 Elf_Internal_Dyn dyn
;
3888 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3896 dyn
.d_un
.d_ptr
= htab
->elf
.sgot
->output_section
->vma
;
3900 dyn
.d_un
.d_ptr
= htab
->elf
.srelplt
->output_section
->vma
;
3904 s
= htab
->elf
.srelplt
->output_section
;
3905 dyn
.d_un
.d_val
= s
->size
;
3909 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3912 /* Fill in the special first entry in the procedure linkage table. */
3913 if (htab
->elf
.splt
&& htab
->elf
.splt
->size
> 0)
3915 memset (htab
->elf
.splt
->contents
, 0, PLT_FIRST_ENTRY_SIZE
);
3916 if (bfd_link_pic (info
))
3918 memcpy (htab
->elf
.splt
->contents
, elf_s390_plt_pic_first_entry
,
3919 PLT_FIRST_ENTRY_SIZE
);
3923 memcpy (htab
->elf
.splt
->contents
, elf_s390_plt_first_entry
,
3924 PLT_FIRST_ENTRY_SIZE
);
3925 bfd_put_32 (output_bfd
,
3926 htab
->elf
.sgotplt
->output_section
->vma
3927 + htab
->elf
.sgotplt
->output_offset
,
3928 htab
->elf
.splt
->contents
+ 24);
3930 elf_section_data (htab
->elf
.splt
->output_section
)
3931 ->this_hdr
.sh_entsize
= 4;
3936 if (htab
->elf
.sgotplt
)
3938 /* Fill in the first three entries in the global offset table. */
3939 if (htab
->elf
.sgotplt
->size
> 0)
3941 bfd_put_32 (output_bfd
,
3942 (sdyn
== NULL
? (bfd_vma
) 0
3943 : sdyn
->output_section
->vma
+ sdyn
->output_offset
),
3944 htab
->elf
.sgotplt
->contents
);
3945 /* One entry for shared object struct ptr. */
3946 bfd_put_32 (output_bfd
, (bfd_vma
) 0, htab
->elf
.sgotplt
->contents
+ 4);
3947 /* One entry for _dl_runtime_resolve. */
3948 bfd_put_32 (output_bfd
, (bfd_vma
) 0, htab
->elf
.sgotplt
->contents
+ 8);
3951 elf_section_data (htab
->elf
.sgotplt
->output_section
)
3952 ->this_hdr
.sh_entsize
= 4;
3954 /* Finish dynamic symbol for local IFUNC symbols. */
3955 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
3957 struct plt_entry
*local_plt
;
3958 Elf_Internal_Sym
*isym
;
3959 Elf_Internal_Shdr
*symtab_hdr
;
3961 symtab_hdr
= &elf_symtab_hdr (ibfd
);
3963 local_plt
= elf_s390_local_plt (ibfd
);
3964 if (local_plt
!= NULL
)
3965 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
3967 if (local_plt
[i
].plt
.offset
!= (bfd_vma
) -1)
3969 asection
*sec
= local_plt
[i
].sec
;
3970 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
, ibfd
, i
);
3974 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
3975 elf_s390_finish_ifunc_symbol (output_bfd
, info
, NULL
, htab
,
3976 local_plt
[i
].plt
.offset
,
3978 + sec
->output_section
->vma
3979 + sec
->output_offset
);
3988 elf_s390_grok_prstatus (bfd
* abfd
, Elf_Internal_Note
* note
)
3993 switch (note
->descsz
)
3998 case 224: /* S/390 Linux. */
4000 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
4003 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
4011 /* Make a ".reg/999" section. */
4012 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
4013 size
, note
->descpos
+ offset
);
4016 /* Return address for Ith PLT stub in section PLT, for relocation REL
4017 or (bfd_vma) -1 if it should not be included. */
4020 elf_s390_plt_sym_val (bfd_vma i
, const asection
*plt
,
4021 const arelent
*rel ATTRIBUTE_UNUSED
)
4023 return plt
->vma
+ PLT_FIRST_ENTRY_SIZE
+ i
* PLT_ENTRY_SIZE
;
4026 /* Merge backend specific data from an object file to the output
4027 object file when linking. */
4030 elf32_s390_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
4032 if (!is_s390_elf (ibfd
) || !is_s390_elf (obfd
))
4035 if (!elf_s390_merge_obj_attributes (ibfd
, obfd
))
4038 elf_elfheader (obfd
)->e_flags
|= elf_elfheader (ibfd
)->e_flags
;
4043 #define TARGET_BIG_SYM s390_elf32_vec
4044 #define TARGET_BIG_NAME "elf32-s390"
4045 #define ELF_ARCH bfd_arch_s390
4046 #define ELF_TARGET_ID S390_ELF_DATA
4047 #define ELF_MACHINE_CODE EM_S390
4048 #define ELF_MACHINE_ALT1 EM_S390_OLD
4049 #define ELF_MAXPAGESIZE 0x1000
4051 #define elf_backend_can_gc_sections 1
4052 #define elf_backend_can_refcount 1
4053 #define elf_backend_want_got_plt 1
4054 #define elf_backend_plt_readonly 1
4055 #define elf_backend_want_plt_sym 0
4056 #define elf_backend_got_header_size 12
4057 #define elf_backend_rela_normal 1
4059 #define elf_info_to_howto elf_s390_info_to_howto
4061 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
4062 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
4063 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
4064 #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
4066 #define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
4068 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
4069 #define elf_backend_check_relocs elf_s390_check_relocs
4070 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
4071 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
4072 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4073 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
4074 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
4075 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
4076 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
4077 #define elf_backend_relocate_section elf_s390_relocate_section
4078 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
4079 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4080 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
4081 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
4082 #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
4083 #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
4085 #define bfd_elf32_mkobject elf_s390_mkobject
4086 #define elf_backend_object_p elf_s390_object_p
4088 #include "elf32-target.h"