1 /* IBM S/390-specific support for 32-bit ELF
2 Copyright (C) 2000-2016 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
30 static bfd_reloc_status_type
31 s390_tls_reloc (bfd
*, arelent
*, asymbol
*, void *,
32 asection
*, bfd
*, char **);
33 static bfd_reloc_status_type
34 s390_elf_ldisp_reloc (bfd
*, arelent
*, asymbol
*, void *,
35 asection
*, bfd
*, char **);
37 /* The relocation "howto" table. */
39 static reloc_howto_type elf_howto_table
[] =
41 HOWTO (R_390_NONE
, /* type */
43 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
45 FALSE
, /* pc_relative */
47 complain_overflow_dont
, /* complain_on_overflow */
48 bfd_elf_generic_reloc
, /* special_function */
49 "R_390_NONE", /* name */
50 FALSE
, /* partial_inplace */
53 FALSE
), /* pcrel_offset */
55 HOWTO(R_390_8
, 0, 0, 8, FALSE
, 0, complain_overflow_bitfield
,
56 bfd_elf_generic_reloc
, "R_390_8", FALSE
, 0,0x000000ff, FALSE
),
57 HOWTO(R_390_12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
58 bfd_elf_generic_reloc
, "R_390_12", FALSE
, 0,0x00000fff, FALSE
),
59 HOWTO(R_390_16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
60 bfd_elf_generic_reloc
, "R_390_16", FALSE
, 0,0x0000ffff, FALSE
),
61 HOWTO(R_390_32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
62 bfd_elf_generic_reloc
, "R_390_32", FALSE
, 0,0xffffffff, FALSE
),
63 HOWTO(R_390_PC32
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
64 bfd_elf_generic_reloc
, "R_390_PC32", FALSE
, 0,0xffffffff, TRUE
),
65 HOWTO(R_390_GOT12
, 0, 1, 12, FALSE
, 0, complain_overflow_bitfield
,
66 bfd_elf_generic_reloc
, "R_390_GOT12", FALSE
, 0,0x00000fff, FALSE
),
67 HOWTO(R_390_GOT32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
68 bfd_elf_generic_reloc
, "R_390_GOT32", FALSE
, 0,0xffffffff, FALSE
),
69 HOWTO(R_390_PLT32
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
70 bfd_elf_generic_reloc
, "R_390_PLT32", FALSE
, 0,0xffffffff, TRUE
),
71 HOWTO(R_390_COPY
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
72 bfd_elf_generic_reloc
, "R_390_COPY", FALSE
, 0,0xffffffff, FALSE
),
73 HOWTO(R_390_GLOB_DAT
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
74 bfd_elf_generic_reloc
, "R_390_GLOB_DAT", FALSE
, 0,0xffffffff, FALSE
),
75 HOWTO(R_390_JMP_SLOT
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
76 bfd_elf_generic_reloc
, "R_390_JMP_SLOT", FALSE
, 0,0xffffffff, FALSE
),
77 HOWTO(R_390_RELATIVE
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
78 bfd_elf_generic_reloc
, "R_390_RELATIVE", FALSE
, 0,0xffffffff, FALSE
),
79 HOWTO(R_390_GOTOFF32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
80 bfd_elf_generic_reloc
, "R_390_GOTOFF32", FALSE
, 0,0xffffffff, FALSE
),
81 HOWTO(R_390_GOTPC
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
82 bfd_elf_generic_reloc
, "R_390_GOTPC", FALSE
, 0,0xffffffff, TRUE
),
83 HOWTO(R_390_GOT16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
84 bfd_elf_generic_reloc
, "R_390_GOT16", FALSE
, 0,0x0000ffff, FALSE
),
85 HOWTO(R_390_PC16
, 0, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
86 bfd_elf_generic_reloc
, "R_390_PC16", FALSE
, 0,0x0000ffff, TRUE
),
87 HOWTO(R_390_PC16DBL
, 1, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
88 bfd_elf_generic_reloc
, "R_390_PC16DBL", FALSE
, 0,0x0000ffff, TRUE
),
89 HOWTO(R_390_PLT16DBL
, 1, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
90 bfd_elf_generic_reloc
, "R_390_PLT16DBL", FALSE
, 0,0x0000ffff, TRUE
),
91 HOWTO(R_390_PC32DBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
92 bfd_elf_generic_reloc
, "R_390_PC32DBL", FALSE
, 0,0xffffffff, TRUE
),
93 HOWTO(R_390_PLT32DBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
94 bfd_elf_generic_reloc
, "R_390_PLT32DBL", FALSE
, 0,0xffffffff, TRUE
),
95 HOWTO(R_390_GOTPCDBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
96 bfd_elf_generic_reloc
, "R_390_GOTPCDBL", FALSE
, 0,0xffffffff, TRUE
),
97 EMPTY_HOWTO (R_390_64
), /* Empty entry for R_390_64. */
98 EMPTY_HOWTO (R_390_PC64
), /* Empty entry for R_390_PC64. */
99 EMPTY_HOWTO (R_390_GOT64
), /* Empty entry for R_390_GOT64. */
100 EMPTY_HOWTO (R_390_PLT64
), /* Empty entry for R_390_PLT64. */
101 HOWTO(R_390_GOTENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
102 bfd_elf_generic_reloc
, "R_390_GOTENT", FALSE
, 0,0xffffffff, TRUE
),
103 HOWTO(R_390_GOTOFF16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
104 bfd_elf_generic_reloc
, "R_390_GOTOFF16", FALSE
, 0,0x0000ffff, FALSE
),
105 EMPTY_HOWTO (R_390_GOTOFF64
), /* Empty entry for R_390_GOTOFF64. */
106 HOWTO(R_390_GOTPLT12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
107 bfd_elf_generic_reloc
, "R_390_GOTPLT12", FALSE
, 0,0x00000fff, FALSE
),
108 HOWTO(R_390_GOTPLT16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
109 bfd_elf_generic_reloc
, "R_390_GOTPLT16", FALSE
, 0,0x0000ffff, FALSE
),
110 HOWTO(R_390_GOTPLT32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
111 bfd_elf_generic_reloc
, "R_390_GOTPLT32", FALSE
, 0,0xffffffff, FALSE
),
112 EMPTY_HOWTO (R_390_GOTPLT64
), /* Empty entry for R_390_GOTPLT64. */
113 HOWTO(R_390_GOTPLTENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
114 bfd_elf_generic_reloc
, "R_390_GOTPLTENT",FALSE
, 0,0xffffffff, TRUE
),
115 HOWTO(R_390_PLTOFF16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
116 bfd_elf_generic_reloc
, "R_390_PLTOFF16", FALSE
, 0,0x0000ffff, FALSE
),
117 HOWTO(R_390_PLTOFF32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
118 bfd_elf_generic_reloc
, "R_390_PLTOFF32", FALSE
, 0,0xffffffff, FALSE
),
119 EMPTY_HOWTO (R_390_PLTOFF64
), /* Empty entry for R_390_PLTOFF64. */
120 HOWTO(R_390_TLS_LOAD
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
121 s390_tls_reloc
, "R_390_TLS_LOAD", FALSE
, 0, 0, FALSE
),
122 HOWTO(R_390_TLS_GDCALL
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
123 s390_tls_reloc
, "R_390_TLS_GDCALL", FALSE
, 0, 0, FALSE
),
124 HOWTO(R_390_TLS_LDCALL
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
125 s390_tls_reloc
, "R_390_TLS_LDCALL", FALSE
, 0, 0, FALSE
),
126 HOWTO(R_390_TLS_GD32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
127 bfd_elf_generic_reloc
, "R_390_TLS_GD32", FALSE
, 0, 0xffffffff, FALSE
),
128 EMPTY_HOWTO (R_390_TLS_GD64
), /* Empty entry for R_390_TLS_GD64. */
129 HOWTO(R_390_TLS_GOTIE12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
130 bfd_elf_generic_reloc
, "R_390_TLS_GOTIE12", FALSE
, 0, 0x00000fff, FALSE
),
131 HOWTO(R_390_TLS_GOTIE32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
132 bfd_elf_generic_reloc
, "R_390_TLS_GOTIE32", FALSE
, 0, 0xffffffff, FALSE
),
133 EMPTY_HOWTO (R_390_TLS_GOTIE64
), /* Empty entry for R_390_TLS_GOTIE64. */
134 HOWTO(R_390_TLS_LDM32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
135 bfd_elf_generic_reloc
, "R_390_TLS_LDM32", FALSE
, 0, 0xffffffff, FALSE
),
136 EMPTY_HOWTO (R_390_TLS_LDM64
), /* Empty entry for R_390_TLS_LDM64. */
137 HOWTO(R_390_TLS_IE32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
138 bfd_elf_generic_reloc
, "R_390_TLS_IE32", FALSE
, 0, 0xffffffff, FALSE
),
139 EMPTY_HOWTO (R_390_TLS_IE64
), /* Empty entry for R_390_TLS_IE64. */
140 HOWTO(R_390_TLS_IEENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
141 bfd_elf_generic_reloc
, "R_390_TLS_IEENT", FALSE
, 0, 0xffffffff, TRUE
),
142 HOWTO(R_390_TLS_LE32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
143 bfd_elf_generic_reloc
, "R_390_TLS_LE32", FALSE
, 0, 0xffffffff, FALSE
),
144 EMPTY_HOWTO (R_390_TLS_LE64
), /* Empty entry for R_390_TLS_LE64. */
145 HOWTO(R_390_TLS_LDO32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
146 bfd_elf_generic_reloc
, "R_390_TLS_LDO32", FALSE
, 0, 0xffffffff, FALSE
),
147 EMPTY_HOWTO (R_390_TLS_LDO64
), /* Empty entry for R_390_TLS_LDO64. */
148 HOWTO(R_390_TLS_DTPMOD
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
149 bfd_elf_generic_reloc
, "R_390_TLS_DTPMOD", FALSE
, 0, 0xffffffff, FALSE
),
150 HOWTO(R_390_TLS_DTPOFF
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
151 bfd_elf_generic_reloc
, "R_390_TLS_DTPOFF", FALSE
, 0, 0xffffffff, FALSE
),
152 HOWTO(R_390_TLS_TPOFF
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
153 bfd_elf_generic_reloc
, "R_390_TLS_TPOFF", FALSE
, 0, 0xffffffff, FALSE
),
154 HOWTO(R_390_20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
155 s390_elf_ldisp_reloc
, "R_390_20", FALSE
, 0,0x0fffff00, FALSE
),
156 HOWTO(R_390_GOT20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
157 s390_elf_ldisp_reloc
, "R_390_GOT20", FALSE
, 0,0x0fffff00, FALSE
),
158 HOWTO(R_390_GOTPLT20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
159 s390_elf_ldisp_reloc
, "R_390_GOTPLT20", FALSE
, 0,0x0fffff00, FALSE
),
160 HOWTO(R_390_TLS_GOTIE20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
161 s390_elf_ldisp_reloc
, "R_390_TLS_GOTIE20", FALSE
, 0,0x0fffff00, FALSE
),
162 HOWTO(R_390_IRELATIVE
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
163 bfd_elf_generic_reloc
, "R_390_IRELATIVE", FALSE
, 0, 0xffffffff, FALSE
),
164 HOWTO(R_390_PC12DBL
, 1, 1, 12, TRUE
, 0, complain_overflow_bitfield
,
165 bfd_elf_generic_reloc
, "R_390_PC12DBL", FALSE
, 0,0x00000fff, TRUE
),
166 HOWTO(R_390_PLT12DBL
, 1, 1, 12, TRUE
, 0, complain_overflow_bitfield
,
167 bfd_elf_generic_reloc
, "R_390_PLT12DBL", FALSE
, 0,0x00000fff, TRUE
),
168 HOWTO(R_390_PC24DBL
, 1, 2, 24, TRUE
, 0, complain_overflow_bitfield
,
169 bfd_elf_generic_reloc
, "R_390_PC24DBL", FALSE
, 0,0x00ffffff, TRUE
),
170 HOWTO(R_390_PLT24DBL
, 1, 2, 24, TRUE
, 0, complain_overflow_bitfield
,
171 bfd_elf_generic_reloc
, "R_390_PLT24DBL", FALSE
, 0,0x00ffffff, TRUE
),
174 /* GNU extension to record C++ vtable hierarchy. */
175 static reloc_howto_type elf32_s390_vtinherit_howto
=
176 HOWTO (R_390_GNU_VTINHERIT
, 0,2,0,FALSE
,0,complain_overflow_dont
, NULL
, "R_390_GNU_VTINHERIT", FALSE
,0, 0, FALSE
);
177 static reloc_howto_type elf32_s390_vtentry_howto
=
178 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
);
180 static reloc_howto_type
*
181 elf_s390_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
182 bfd_reloc_code_real_type code
)
187 return &elf_howto_table
[(int) R_390_NONE
];
189 return &elf_howto_table
[(int) R_390_8
];
190 case BFD_RELOC_390_12
:
191 return &elf_howto_table
[(int) R_390_12
];
193 return &elf_howto_table
[(int) R_390_16
];
195 return &elf_howto_table
[(int) R_390_32
];
197 return &elf_howto_table
[(int) R_390_32
];
198 case BFD_RELOC_32_PCREL
:
199 return &elf_howto_table
[(int) R_390_PC32
];
200 case BFD_RELOC_390_GOT12
:
201 return &elf_howto_table
[(int) R_390_GOT12
];
202 case BFD_RELOC_32_GOT_PCREL
:
203 return &elf_howto_table
[(int) R_390_GOT32
];
204 case BFD_RELOC_390_PLT32
:
205 return &elf_howto_table
[(int) R_390_PLT32
];
206 case BFD_RELOC_390_COPY
:
207 return &elf_howto_table
[(int) R_390_COPY
];
208 case BFD_RELOC_390_GLOB_DAT
:
209 return &elf_howto_table
[(int) R_390_GLOB_DAT
];
210 case BFD_RELOC_390_JMP_SLOT
:
211 return &elf_howto_table
[(int) R_390_JMP_SLOT
];
212 case BFD_RELOC_390_RELATIVE
:
213 return &elf_howto_table
[(int) R_390_RELATIVE
];
214 case BFD_RELOC_32_GOTOFF
:
215 return &elf_howto_table
[(int) R_390_GOTOFF32
];
216 case BFD_RELOC_390_GOTPC
:
217 return &elf_howto_table
[(int) R_390_GOTPC
];
218 case BFD_RELOC_390_GOT16
:
219 return &elf_howto_table
[(int) R_390_GOT16
];
220 case BFD_RELOC_16_PCREL
:
221 return &elf_howto_table
[(int) R_390_PC16
];
222 case BFD_RELOC_390_PC12DBL
:
223 return &elf_howto_table
[(int) R_390_PC12DBL
];
224 case BFD_RELOC_390_PLT12DBL
:
225 return &elf_howto_table
[(int) R_390_PLT12DBL
];
226 case BFD_RELOC_390_PC16DBL
:
227 return &elf_howto_table
[(int) R_390_PC16DBL
];
228 case BFD_RELOC_390_PLT16DBL
:
229 return &elf_howto_table
[(int) R_390_PLT16DBL
];
230 case BFD_RELOC_390_PC24DBL
:
231 return &elf_howto_table
[(int) R_390_PC24DBL
];
232 case BFD_RELOC_390_PLT24DBL
:
233 return &elf_howto_table
[(int) R_390_PLT24DBL
];
234 case BFD_RELOC_390_PC32DBL
:
235 return &elf_howto_table
[(int) R_390_PC32DBL
];
236 case BFD_RELOC_390_PLT32DBL
:
237 return &elf_howto_table
[(int) R_390_PLT32DBL
];
238 case BFD_RELOC_390_GOTPCDBL
:
239 return &elf_howto_table
[(int) R_390_GOTPCDBL
];
240 case BFD_RELOC_390_GOTENT
:
241 return &elf_howto_table
[(int) R_390_GOTENT
];
242 case BFD_RELOC_16_GOTOFF
:
243 return &elf_howto_table
[(int) R_390_GOTOFF16
];
244 case BFD_RELOC_390_GOTPLT12
:
245 return &elf_howto_table
[(int) R_390_GOTPLT12
];
246 case BFD_RELOC_390_GOTPLT16
:
247 return &elf_howto_table
[(int) R_390_GOTPLT16
];
248 case BFD_RELOC_390_GOTPLT32
:
249 return &elf_howto_table
[(int) R_390_GOTPLT32
];
250 case BFD_RELOC_390_GOTPLTENT
:
251 return &elf_howto_table
[(int) R_390_GOTPLTENT
];
252 case BFD_RELOC_390_PLTOFF16
:
253 return &elf_howto_table
[(int) R_390_PLTOFF16
];
254 case BFD_RELOC_390_PLTOFF32
:
255 return &elf_howto_table
[(int) R_390_PLTOFF32
];
256 case BFD_RELOC_390_TLS_LOAD
:
257 return &elf_howto_table
[(int) R_390_TLS_LOAD
];
258 case BFD_RELOC_390_TLS_GDCALL
:
259 return &elf_howto_table
[(int) R_390_TLS_GDCALL
];
260 case BFD_RELOC_390_TLS_LDCALL
:
261 return &elf_howto_table
[(int) R_390_TLS_LDCALL
];
262 case BFD_RELOC_390_TLS_GD32
:
263 return &elf_howto_table
[(int) R_390_TLS_GD32
];
264 case BFD_RELOC_390_TLS_GOTIE12
:
265 return &elf_howto_table
[(int) R_390_TLS_GOTIE12
];
266 case BFD_RELOC_390_TLS_GOTIE32
:
267 return &elf_howto_table
[(int) R_390_TLS_GOTIE32
];
268 case BFD_RELOC_390_TLS_LDM32
:
269 return &elf_howto_table
[(int) R_390_TLS_LDM32
];
270 case BFD_RELOC_390_TLS_IE32
:
271 return &elf_howto_table
[(int) R_390_TLS_IE32
];
272 case BFD_RELOC_390_TLS_IEENT
:
273 return &elf_howto_table
[(int) R_390_TLS_IEENT
];
274 case BFD_RELOC_390_TLS_LE32
:
275 return &elf_howto_table
[(int) R_390_TLS_LE32
];
276 case BFD_RELOC_390_TLS_LDO32
:
277 return &elf_howto_table
[(int) R_390_TLS_LDO32
];
278 case BFD_RELOC_390_TLS_DTPMOD
:
279 return &elf_howto_table
[(int) R_390_TLS_DTPMOD
];
280 case BFD_RELOC_390_TLS_DTPOFF
:
281 return &elf_howto_table
[(int) R_390_TLS_DTPOFF
];
282 case BFD_RELOC_390_TLS_TPOFF
:
283 return &elf_howto_table
[(int) R_390_TLS_TPOFF
];
284 case BFD_RELOC_390_20
:
285 return &elf_howto_table
[(int) R_390_20
];
286 case BFD_RELOC_390_GOT20
:
287 return &elf_howto_table
[(int) R_390_GOT20
];
288 case BFD_RELOC_390_GOTPLT20
:
289 return &elf_howto_table
[(int) R_390_GOTPLT20
];
290 case BFD_RELOC_390_TLS_GOTIE20
:
291 return &elf_howto_table
[(int) R_390_TLS_GOTIE20
];
292 case BFD_RELOC_390_IRELATIVE
:
293 return &elf_howto_table
[(int) R_390_IRELATIVE
];
294 case BFD_RELOC_VTABLE_INHERIT
:
295 return &elf32_s390_vtinherit_howto
;
296 case BFD_RELOC_VTABLE_ENTRY
:
297 return &elf32_s390_vtentry_howto
;
304 static reloc_howto_type
*
305 elf_s390_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
310 for (i
= 0; i
< sizeof (elf_howto_table
) / sizeof (elf_howto_table
[0]); i
++)
311 if (elf_howto_table
[i
].name
!= NULL
312 && strcasecmp (elf_howto_table
[i
].name
, r_name
) == 0)
313 return &elf_howto_table
[i
];
315 if (strcasecmp (elf32_s390_vtinherit_howto
.name
, r_name
) == 0)
316 return &elf32_s390_vtinherit_howto
;
317 if (strcasecmp (elf32_s390_vtentry_howto
.name
, r_name
) == 0)
318 return &elf32_s390_vtentry_howto
;
323 /* We need to use ELF32_R_TYPE so we have our own copy of this function,
324 and elf32-s390.c has its own copy. */
327 elf_s390_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
329 Elf_Internal_Rela
*dst
)
331 unsigned int r_type
= ELF32_R_TYPE(dst
->r_info
);
334 case R_390_GNU_VTINHERIT
:
335 cache_ptr
->howto
= &elf32_s390_vtinherit_howto
;
338 case R_390_GNU_VTENTRY
:
339 cache_ptr
->howto
= &elf32_s390_vtentry_howto
;
343 if (r_type
>= sizeof (elf_howto_table
) / sizeof (elf_howto_table
[0]))
345 /* xgettext:c-format */
346 _bfd_error_handler (_("%B: invalid relocation type %d"),
350 cache_ptr
->howto
= &elf_howto_table
[r_type
];
354 /* A relocation function which doesn't do anything. */
355 static bfd_reloc_status_type
356 s390_tls_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
357 arelent
*reloc_entry
,
358 asymbol
*symbol ATTRIBUTE_UNUSED
,
359 void * data ATTRIBUTE_UNUSED
,
360 asection
*input_section
,
362 char **error_message ATTRIBUTE_UNUSED
)
365 reloc_entry
->address
+= input_section
->output_offset
;
369 /* Handle the large displacement relocs. */
370 static bfd_reloc_status_type
371 s390_elf_ldisp_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
372 arelent
*reloc_entry
,
374 void * data ATTRIBUTE_UNUSED
,
375 asection
*input_section
,
377 char **error_message ATTRIBUTE_UNUSED
)
379 reloc_howto_type
*howto
= reloc_entry
->howto
;
383 if (output_bfd
!= (bfd
*) NULL
384 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
385 && (! howto
->partial_inplace
386 || reloc_entry
->addend
== 0))
388 reloc_entry
->address
+= input_section
->output_offset
;
392 if (output_bfd
!= NULL
)
393 return bfd_reloc_continue
;
395 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
396 return bfd_reloc_outofrange
;
398 relocation
= (symbol
->value
399 + symbol
->section
->output_section
->vma
400 + symbol
->section
->output_offset
);
401 relocation
+= reloc_entry
->addend
;
402 if (howto
->pc_relative
)
404 relocation
-= (input_section
->output_section
->vma
405 + input_section
->output_offset
);
406 relocation
-= reloc_entry
->address
;
409 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ reloc_entry
->address
);
410 insn
|= (relocation
& 0xfff) << 16 | (relocation
& 0xff000) >> 4;
411 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ reloc_entry
->address
);
413 if ((bfd_signed_vma
) relocation
< - 0x80000
414 || (bfd_signed_vma
) relocation
> 0x7ffff)
415 return bfd_reloc_overflow
;
421 elf_s390_is_local_label_name (bfd
*abfd
, const char *name
)
423 if (name
[0] == '.' && (name
[1] == 'X' || name
[1] == 'L'))
426 return _bfd_elf_is_local_label_name (abfd
, name
);
429 /* Functions for the 390 ELF linker. */
431 /* The name of the dynamic interpreter. This is put in the .interp
434 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
436 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
437 copying dynamic variables from a shared lib into an app's dynbss
438 section, and instead use a dynamic relocation to point into the
440 #define ELIMINATE_COPY_RELOCS 1
442 /* The size in bytes of the first entry in the procedure linkage table. */
443 #define PLT_FIRST_ENTRY_SIZE 32
444 /* The size in bytes of an entry in the procedure linkage table. */
445 #define PLT_ENTRY_SIZE 32
447 #define GOT_ENTRY_SIZE 4
449 #define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela)
451 /* The first three entries in a procedure linkage table are reserved,
452 and the initial contents are unimportant (we zero them out).
453 Subsequent entries look like this. See the SVR4 ABI 386
454 supplement to see how this works. */
456 /* For the s390, simple addr offset can only be 0 - 4096.
457 To use the full 2 GB address space, several instructions
458 are needed to load an address in a register and execute
459 a branch( or just saving the address)
461 Furthermore, only r 0 and 1 are free to use!!! */
463 /* The first 3 words in the GOT are then reserved.
464 Word 0 is the address of the dynamic table.
465 Word 1 is a pointer to a structure describing the object
466 Word 2 is used to point to the loader entry address.
468 The code for position independent PLT entries looks like this:
470 r12 holds addr of the current GOT at entry to the PLT
472 The GOT holds the address in the PLT to be executed.
473 The loader then gets:
474 24(15) = Pointer to the structure describing the object.
475 28(15) = Offset into rela.plt
477 The loader must then find the module where the function is
478 and insert the address in the GOT.
480 Note: 390 can only address +- 64 K relative.
481 We check if offset > 65536, then make a relative branch -64xxx
482 back to a previous defined branch
484 PLT1: BASR 1,0 # 2 bytes
485 L 1,22(1) # 4 bytes Load offset in GOT in r 1
486 L 1,(1,12) # 4 bytes Load address from GOT in r1
487 BCR 15,1 # 2 bytes Jump to address
488 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
489 L 1,14(1) # 4 bytes Load offset in symol table in r1
490 BRC 15,-x # 4 bytes Jump to start of PLT
491 .word 0 # 2 bytes filler
492 .long ? # 4 bytes offset in GOT
493 .long ? # 4 bytes offset into rela.plt
495 This was the general case. There are two additional, optimizes PLT
496 definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768.
497 First the one for GOT offsets < 4096:
499 PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1
500 BCR 15,1 # 2 bytes Jump to address
501 .word 0,0,0 # 6 bytes filler
502 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
503 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
504 BRC 15,-x # 4 bytes Jump to start of PLT
505 .word 0,0,0 # 6 bytes filler
506 .long ? # 4 bytes offset into rela.plt
508 Second the one for GOT offsets < 32768:
510 PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1
511 L 1,(1,12) # 4 bytes Load address from GOT to r1
512 BCR 15,1 # 2 bytes Jump to address
513 .word 0 # 2 bytes filler
514 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
515 L 1,14(1) # 4 bytes Load offset in rela.plt in r1
516 BRC 15,-x # 4 bytes Jump to start of PLT
517 .word 0,0,0 # 6 bytes filler
518 .long ? # 4 bytes offset into rela.plt
520 Total = 32 bytes per PLT entry
522 The code for static build PLT entries looks like this:
524 PLT1: BASR 1,0 # 2 bytes
525 L 1,22(1) # 4 bytes Load address of GOT entry
526 L 1,0(0,1) # 4 bytes Load address from GOT in r1
527 BCR 15,1 # 2 bytes Jump to address
528 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
529 L 1,14(1) # 4 bytes Load offset in symbol table in r1
530 BRC 15,-x # 4 bytes Jump to start of PLT
531 .word 0 # 2 bytes filler
532 .long ? # 4 bytes address of GOT entry
533 .long ? # 4 bytes offset into rela.plt */
535 static const bfd_byte elf_s390_plt_entry
[PLT_ENTRY_SIZE
] =
537 0x0d, 0x10, /* basr %r1,%r0 */
538 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
539 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */
540 0x07, 0xf1, /* br %r1 */
541 0x0d, 0x10, /* basr %r1,%r0 */
542 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
543 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
544 0x00, 0x00, /* padding */
545 0x00, 0x00, 0x00, 0x00, /* GOT offset */
546 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
549 /* Generic PLT pic entry. */
550 static const bfd_byte elf_s390_plt_pic_entry
[PLT_ENTRY_SIZE
] =
552 0x0d, 0x10, /* basr %r1,%r0 */
553 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */
554 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
555 0x07, 0xf1, /* br %r1 */
556 0x0d, 0x10, /* basr %r1,%r0 */
557 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
558 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
559 0x00, 0x00, /* padding */
560 0x00, 0x00, 0x00, 0x00, /* GOT offset */
561 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */
564 /* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced
565 when generating the PLT slot with the GOT offset. */
566 static const bfd_byte elf_s390_plt_pic12_entry
[PLT_ENTRY_SIZE
] =
568 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */
569 0x07, 0xf1, /* br %r1 */
570 0x00, 0x00, 0x00, 0x00, /* padding */
572 0x0d, 0x10, /* basr %r1,%r0 */
573 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
574 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
575 0x00, 0x00, 0x00, 0x00,
576 0x00, 0x00, 0x00, 0x00
579 /* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced
580 when generating the PLT slot with the GOT offset. */
581 static const bfd_byte elf_s390_plt_pic16_entry
[PLT_ENTRY_SIZE
] =
583 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */
584 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */
585 0x07, 0xf1, /* br %r1 */
587 0x0d, 0x10, /* basr %r1,%r0 */
588 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */
589 0xa7, 0xf4, 0x00, 0x00, /* j first plt */
590 0x00, 0x00, 0x00, 0x00,
591 0x00, 0x00, 0x00, 0x00,
595 /* The first PLT entry pushes the offset into the rela.plt
596 from R1 onto the stack at 8(15) and the loader object info
597 at 12(15), loads the loader address in R1 and jumps to it. */
599 /* The first entry in the PLT for PIC code:
602 ST 1,28(15) # R1 has offset into rela.plt
603 L 1,4(12) # Get loader ino(object struct address)
604 ST 1,24(15) # Store address
605 L 1,8(12) # Entry address of loader in R1
606 BR 1 # Jump to loader
608 The first entry in the PLT for static code:
611 ST 1,28(15) # R1 has offset into rela.plt
613 L 1,18(0,1) # Get address of GOT
614 MVC 24(4,15),4(1) # Move loader ino to stack
615 L 1,8(1) # Get address of loader
616 BR 1 # Jump to loader
618 .long got # address of GOT */
620 static const bfd_byte elf_s390_plt_first_entry
[PLT_FIRST_ENTRY_SIZE
] =
622 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
623 0x0d, 0x10, /* basr %r1,%r0 */
624 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */
625 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */
626 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */
627 0x07, 0xf1, /* br %r1 */
628 0x00, 0x00, 0x00, 0x00,
629 0x00, 0x00, 0x00, 0x00,
633 static const bfd_byte elf_s390_plt_pic_first_entry
[PLT_FIRST_ENTRY_SIZE
] =
635 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */
636 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */
637 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */
638 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */
639 0x07, 0xf1, /* br %r1 */
640 0x00, 0x00, 0x00, 0x00,
641 0x00, 0x00, 0x00, 0x00,
642 0x00, 0x00, 0x00, 0x00,
647 /* s390 ELF linker hash entry. */
649 struct elf_s390_link_hash_entry
651 struct elf_link_hash_entry elf
;
653 /* Track dynamic relocs copied for this symbol. */
654 struct elf_dyn_relocs
*dyn_relocs
;
656 /* Number of GOTPLT references for a function. */
657 bfd_signed_vma gotplt_refcount
;
659 #define GOT_UNKNOWN 0
663 #define GOT_TLS_IE_NLT 4
664 unsigned char tls_type
;
666 /* For pointer equality reasons we might need to change the symbol
667 type from STT_GNU_IFUNC to STT_FUNC together with its value and
668 section entry. So after alloc_dynrelocs only these values should
669 be used. In order to check whether a symbol is IFUNC use
670 s390_is_ifunc_symbol_p. */
671 bfd_vma ifunc_resolver_address
;
672 asection
*ifunc_resolver_section
;
675 #define elf_s390_hash_entry(ent) \
676 ((struct elf_s390_link_hash_entry *)(ent))
678 /* This structure represents an entry in the local PLT list needed for
679 local IFUNC symbols. */
682 /* The section of the local symbol.
683 Set in relocate_section and used in finish_dynamic_sections. */
688 bfd_signed_vma refcount
;
693 /* NOTE: Keep this structure in sync with
694 the one declared in elf64-s390.c. */
695 struct elf_s390_obj_tdata
697 struct elf_obj_tdata root
;
699 /* A local PLT is needed for ifunc symbols. */
700 struct plt_entry
*local_plt
;
702 /* TLS type for each local got entry. */
703 char *local_got_tls_type
;
706 #define elf_s390_tdata(abfd) \
707 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
709 #define elf_s390_local_plt(abfd) \
710 (elf_s390_tdata (abfd)->local_plt)
712 #define elf_s390_local_got_tls_type(abfd) \
713 (elf_s390_tdata (abfd)->local_got_tls_type)
715 #define is_s390_elf(bfd) \
716 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
717 && elf_tdata (bfd) != NULL \
718 && elf_object_id (bfd) == S390_ELF_DATA)
721 elf_s390_mkobject (bfd
*abfd
)
723 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_s390_obj_tdata
),
728 elf_s390_object_p (bfd
*abfd
)
730 /* Set the right machine number for an s390 elf32 file. */
731 return bfd_default_set_arch_mach (abfd
, bfd_arch_s390
, bfd_mach_s390_31
);
734 /* s390 ELF linker hash table. */
736 struct elf_s390_link_hash_table
738 struct elf_link_hash_table elf
;
740 /* Short-cuts to get to dynamic linker sections. */
747 bfd_signed_vma refcount
;
751 /* Small local sym cache. */
752 struct sym_cache sym_cache
;
755 /* Get the s390 ELF linker hash table from a link_info structure. */
757 #define elf_s390_hash_table(p) \
758 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
759 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
762 #include "elf-s390-common.c"
764 /* Create an entry in an s390 ELF linker hash table. */
766 static struct bfd_hash_entry
*
767 link_hash_newfunc (struct bfd_hash_entry
*entry
,
768 struct bfd_hash_table
*table
,
771 /* Allocate the structure if it has not already been allocated by a
775 entry
= bfd_hash_allocate (table
,
776 sizeof (struct elf_s390_link_hash_entry
));
781 /* Call the allocation method of the superclass. */
782 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
785 struct elf_s390_link_hash_entry
*eh
;
787 eh
= (struct elf_s390_link_hash_entry
*) entry
;
788 eh
->dyn_relocs
= NULL
;
789 eh
->gotplt_refcount
= 0;
790 eh
->tls_type
= GOT_UNKNOWN
;
791 eh
->ifunc_resolver_address
= 0;
792 eh
->ifunc_resolver_section
= NULL
;
798 /* Create an s390 ELF linker hash table. */
800 static struct bfd_link_hash_table
*
801 elf_s390_link_hash_table_create (bfd
*abfd
)
803 struct elf_s390_link_hash_table
*ret
;
804 bfd_size_type amt
= sizeof (struct elf_s390_link_hash_table
);
806 ret
= (struct elf_s390_link_hash_table
*) bfd_zmalloc (amt
);
810 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
, link_hash_newfunc
,
811 sizeof (struct elf_s390_link_hash_entry
),
818 return &ret
->elf
.root
;
821 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
822 shortcuts to them in our hash table. */
825 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
827 struct elf_s390_link_hash_table
*htab
;
829 if (! _bfd_elf_create_got_section (dynobj
, info
))
832 htab
= elf_s390_hash_table (info
);
833 htab
->elf
.sgot
= bfd_get_linker_section (dynobj
, ".got");
834 htab
->elf
.sgotplt
= bfd_get_linker_section (dynobj
, ".got.plt");
835 htab
->elf
.srelgot
= bfd_get_linker_section (dynobj
, ".rela.got");
836 if (!htab
->elf
.sgot
|| !htab
->elf
.sgotplt
|| !htab
->elf
.srelgot
)
842 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
843 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
847 elf_s390_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
849 struct elf_s390_link_hash_table
*htab
;
851 htab
= elf_s390_hash_table (info
);
852 if (!htab
->elf
.sgot
&& !create_got_section (dynobj
, info
))
855 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
858 htab
->elf
.splt
= bfd_get_linker_section (dynobj
, ".plt");
859 htab
->elf
.srelplt
= bfd_get_linker_section (dynobj
, ".rela.plt");
860 htab
->sdynbss
= bfd_get_linker_section (dynobj
, ".dynbss");
861 if (!bfd_link_pic (info
))
862 htab
->srelbss
= bfd_get_linker_section (dynobj
, ".rela.bss");
864 if (!htab
->elf
.splt
|| !htab
->elf
.srelplt
|| !htab
->sdynbss
865 || (!bfd_link_pic (info
) && !htab
->srelbss
))
871 /* Copy the extra info we tack onto an elf_link_hash_entry. */
874 elf_s390_copy_indirect_symbol (struct bfd_link_info
*info
,
875 struct elf_link_hash_entry
*dir
,
876 struct elf_link_hash_entry
*ind
)
878 struct elf_s390_link_hash_entry
*edir
, *eind
;
880 edir
= (struct elf_s390_link_hash_entry
*) dir
;
881 eind
= (struct elf_s390_link_hash_entry
*) ind
;
883 if (eind
->dyn_relocs
!= NULL
)
885 if (edir
->dyn_relocs
!= NULL
)
887 struct elf_dyn_relocs
**pp
;
888 struct elf_dyn_relocs
*p
;
890 /* Add reloc counts against the indirect sym to the direct sym
891 list. Merge any entries against the same section. */
892 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
894 struct elf_dyn_relocs
*q
;
896 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
897 if (q
->sec
== p
->sec
)
899 q
->pc_count
+= p
->pc_count
;
900 q
->count
+= p
->count
;
907 *pp
= edir
->dyn_relocs
;
910 edir
->dyn_relocs
= eind
->dyn_relocs
;
911 eind
->dyn_relocs
= NULL
;
914 if (ind
->root
.type
== bfd_link_hash_indirect
915 && dir
->got
.refcount
<= 0)
917 edir
->tls_type
= eind
->tls_type
;
918 eind
->tls_type
= GOT_UNKNOWN
;
921 if (ELIMINATE_COPY_RELOCS
922 && ind
->root
.type
!= bfd_link_hash_indirect
923 && dir
->dynamic_adjusted
)
925 /* If called to transfer flags for a weakdef during processing
926 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
927 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
928 dir
->ref_dynamic
|= ind
->ref_dynamic
;
929 dir
->ref_regular
|= ind
->ref_regular
;
930 dir
->ref_regular_nonweak
|= ind
->ref_regular_nonweak
;
931 dir
->needs_plt
|= ind
->needs_plt
;
934 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
938 elf_s390_tls_transition (struct bfd_link_info
*info
,
942 if (bfd_link_pic (info
))
950 return R_390_TLS_LE32
;
951 return R_390_TLS_IE32
;
952 case R_390_TLS_GOTIE32
:
954 return R_390_TLS_LE32
;
955 return R_390_TLS_GOTIE32
;
956 case R_390_TLS_LDM32
:
957 return R_390_TLS_LE32
;
963 /* Look through the relocs for a section during the first phase, and
964 allocate space in the global offset table or procedure linkage
968 elf_s390_check_relocs (bfd
*abfd
,
969 struct bfd_link_info
*info
,
971 const Elf_Internal_Rela
*relocs
)
973 struct elf_s390_link_hash_table
*htab
;
974 Elf_Internal_Shdr
*symtab_hdr
;
975 struct elf_link_hash_entry
**sym_hashes
;
976 const Elf_Internal_Rela
*rel
;
977 const Elf_Internal_Rela
*rel_end
;
979 bfd_signed_vma
*local_got_refcounts
;
980 int tls_type
, old_tls_type
;
981 Elf_Internal_Sym
*isym
;
983 if (bfd_link_relocatable (info
))
986 BFD_ASSERT (is_s390_elf (abfd
));
988 htab
= elf_s390_hash_table (info
);
989 symtab_hdr
= &elf_symtab_hdr (abfd
);
990 sym_hashes
= elf_sym_hashes (abfd
);
991 local_got_refcounts
= elf_local_got_refcounts (abfd
);
995 rel_end
= relocs
+ sec
->reloc_count
;
996 for (rel
= relocs
; rel
< rel_end
; rel
++)
999 unsigned long r_symndx
;
1000 struct elf_link_hash_entry
*h
;
1002 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1004 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
1006 /* xgettext:c-format */
1007 _bfd_error_handler (_("%B: bad symbol index: %d"),
1012 if (r_symndx
< symtab_hdr
->sh_info
)
1014 /* A local symbol. */
1015 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
1020 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
1022 struct plt_entry
*plt
;
1024 if (htab
->elf
.dynobj
== NULL
)
1025 htab
->elf
.dynobj
= abfd
;
1027 if (!s390_elf_create_ifunc_sections (htab
->elf
.dynobj
, info
))
1030 if (local_got_refcounts
== NULL
)
1032 if (!elf_s390_allocate_local_syminfo (abfd
, symtab_hdr
))
1034 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1036 plt
= elf_s390_local_plt (abfd
);
1037 plt
[r_symndx
].plt
.refcount
++;
1043 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1044 while (h
->root
.type
== bfd_link_hash_indirect
1045 || h
->root
.type
== bfd_link_hash_warning
)
1046 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1048 /* PR15323, ref flags aren't set for references in the same
1050 h
->root
.non_ir_ref
= 1;
1053 /* Create got section and local_got_refcounts array if they
1055 r_type
= elf_s390_tls_transition (info
,
1056 ELF32_R_TYPE (rel
->r_info
),
1065 case R_390_GOTPLT12
:
1066 case R_390_GOTPLT16
:
1067 case R_390_GOTPLT20
:
1068 case R_390_GOTPLT32
:
1069 case R_390_GOTPLTENT
:
1070 case R_390_TLS_GD32
:
1071 case R_390_TLS_GOTIE12
:
1072 case R_390_TLS_GOTIE20
:
1073 case R_390_TLS_GOTIE32
:
1074 case R_390_TLS_IEENT
:
1075 case R_390_TLS_IE32
:
1076 case R_390_TLS_LDM32
:
1078 && local_got_refcounts
== NULL
)
1080 if (!elf_s390_allocate_local_syminfo (abfd
, symtab_hdr
))
1082 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1085 case R_390_GOTOFF16
:
1086 case R_390_GOTOFF32
:
1088 case R_390_GOTPCDBL
:
1089 if (htab
->elf
.sgot
== NULL
)
1091 if (htab
->elf
.dynobj
== NULL
)
1092 htab
->elf
.dynobj
= abfd
;
1093 if (!create_got_section (htab
->elf
.dynobj
, info
))
1100 if (htab
->elf
.dynobj
== NULL
)
1101 htab
->elf
.dynobj
= abfd
;
1102 if (!s390_elf_create_ifunc_sections (htab
->elf
.dynobj
, info
))
1105 /* Make sure an IFUNC symbol defined in a non-shared object
1106 always gets a PLT slot. */
1107 if (s390_is_ifunc_symbol_p (h
) && h
->def_regular
)
1109 /* The symbol is called by the dynamic loader in order
1110 to resolve the relocation. So it is in fact also
1119 case R_390_GOTPCDBL
:
1120 /* These relocs do not need a GOT slot. They just load the
1121 GOT pointer itself or address something else relative to
1122 the GOT. Since the GOT pointer has been set up above we
1125 case R_390_GOTOFF16
:
1126 case R_390_GOTOFF32
:
1127 if (h
== NULL
|| !s390_is_ifunc_symbol_p (h
) || !h
->def_regular
)
1131 case R_390_PLT12DBL
:
1132 case R_390_PLT16DBL
:
1133 case R_390_PLT24DBL
:
1134 case R_390_PLT32DBL
:
1136 case R_390_PLTOFF16
:
1137 case R_390_PLTOFF32
:
1138 /* This symbol requires a procedure linkage table entry. We
1139 actually build the entry in adjust_dynamic_symbol,
1140 because this might be a case of linking PIC code which is
1141 never referenced by a dynamic object, in which case we
1142 don't need to generate a procedure linkage table entry
1145 /* If this is a local symbol, we resolve it directly without
1146 creating a procedure linkage table entry. */
1150 h
->plt
.refcount
+= 1;
1154 case R_390_GOTPLT12
:
1155 case R_390_GOTPLT16
:
1156 case R_390_GOTPLT20
:
1157 case R_390_GOTPLT32
:
1158 case R_390_GOTPLTENT
:
1159 /* This symbol requires either a procedure linkage table entry
1160 or an entry in the local got. We actually build the entry
1161 in adjust_dynamic_symbol because whether this is really a
1162 global reference can change and with it the fact if we have
1163 to create a plt entry or a local got entry. To be able to
1164 make a once global symbol a local one we have to keep track
1165 of the number of gotplt references that exist for this
1169 ((struct elf_s390_link_hash_entry
*) h
)->gotplt_refcount
++;
1171 h
->plt
.refcount
+= 1;
1174 local_got_refcounts
[r_symndx
] += 1;
1177 case R_390_TLS_LDM32
:
1178 htab
->tls_ldm_got
.refcount
+= 1;
1181 case R_390_TLS_IE32
:
1182 case R_390_TLS_GOTIE12
:
1183 case R_390_TLS_GOTIE20
:
1184 case R_390_TLS_GOTIE32
:
1185 case R_390_TLS_IEENT
:
1186 if (bfd_link_pic (info
))
1187 info
->flags
|= DF_STATIC_TLS
;
1195 case R_390_TLS_GD32
:
1196 /* This symbol requires a global offset table entry. */
1205 tls_type
= GOT_NORMAL
;
1207 case R_390_TLS_GD32
:
1208 tls_type
= GOT_TLS_GD
;
1210 case R_390_TLS_IE32
:
1211 case R_390_TLS_GOTIE32
:
1212 tls_type
= GOT_TLS_IE
;
1214 case R_390_TLS_GOTIE12
:
1215 case R_390_TLS_GOTIE20
:
1216 case R_390_TLS_IEENT
:
1217 tls_type
= GOT_TLS_IE_NLT
;
1223 h
->got
.refcount
+= 1;
1224 old_tls_type
= elf_s390_hash_entry(h
)->tls_type
;
1228 local_got_refcounts
[r_symndx
] += 1;
1229 old_tls_type
= elf_s390_local_got_tls_type (abfd
) [r_symndx
];
1231 /* If a TLS symbol is accessed using IE at least once,
1232 there is no point to use dynamic model for it. */
1233 if (old_tls_type
!= tls_type
&& old_tls_type
!= GOT_UNKNOWN
)
1235 if (old_tls_type
== GOT_NORMAL
|| tls_type
== GOT_NORMAL
)
1238 /* xgettext:c-format */
1239 (_("%B: `%s' accessed both as normal and thread local symbol"),
1240 abfd
, h
->root
.root
.string
);
1243 if (old_tls_type
> tls_type
)
1244 tls_type
= old_tls_type
;
1247 if (old_tls_type
!= tls_type
)
1250 elf_s390_hash_entry (h
)->tls_type
= tls_type
;
1252 elf_s390_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
1255 if (r_type
!= R_390_TLS_IE32
)
1259 case R_390_TLS_LE32
:
1260 /* For static linking and executables this reloc will be
1261 calculated at linktime otherwise a TLS_TPOFF runtime
1262 reloc will be generated. */
1263 if (r_type
== R_390_TLS_LE32
&& bfd_link_pie (info
))
1266 if (!bfd_link_pic (info
))
1268 info
->flags
|= DF_STATIC_TLS
;
1280 if (h
!= NULL
&& bfd_link_executable (info
))
1282 /* If this reloc is in a read-only section, we might
1283 need a copy reloc. We can't check reliably at this
1284 stage whether the section is read-only, as input
1285 sections have not yet been mapped to output sections.
1286 Tentatively set the flag for now, and correct in
1287 adjust_dynamic_symbol. */
1290 if (!bfd_link_pic (info
))
1292 /* We may need a .plt entry if the function this reloc
1293 refers to is in a shared lib. */
1294 h
->plt
.refcount
+= 1;
1298 /* If we are creating a shared library, and this is a reloc
1299 against a global symbol, or a non PC relative reloc
1300 against a local symbol, then we need to copy the reloc
1301 into the shared library. However, if we are linking with
1302 -Bsymbolic, we do not need to copy a reloc against a
1303 global symbol which is defined in an object we are
1304 including in the link (i.e., DEF_REGULAR is set). At
1305 this point we have not seen all the input files, so it is
1306 possible that DEF_REGULAR is not set now but will be set
1307 later (it is never cleared). In case of a weak definition,
1308 DEF_REGULAR may be cleared later by a strong definition in
1309 a shared library. We account for that possibility below by
1310 storing information in the relocs_copied field of the hash
1311 table entry. A similar situation occurs when creating
1312 shared libraries and symbol visibility changes render the
1315 If on the other hand, we are creating an executable, we
1316 may need to keep relocations for symbols satisfied by a
1317 dynamic library if we manage to avoid copy relocs for the
1319 if ((bfd_link_pic (info
)
1320 && (sec
->flags
& SEC_ALLOC
) != 0
1321 && ((ELF32_R_TYPE (rel
->r_info
) != R_390_PC16
1322 && ELF32_R_TYPE (rel
->r_info
) != R_390_PC12DBL
1323 && ELF32_R_TYPE (rel
->r_info
) != R_390_PC16DBL
1324 && ELF32_R_TYPE (rel
->r_info
) != R_390_PC24DBL
1325 && ELF32_R_TYPE (rel
->r_info
) != R_390_PC32DBL
1326 && ELF32_R_TYPE (rel
->r_info
) != R_390_PC32
)
1328 && (! SYMBOLIC_BIND (info
, h
)
1329 || h
->root
.type
== bfd_link_hash_defweak
1330 || !h
->def_regular
))))
1331 || (ELIMINATE_COPY_RELOCS
1332 && !bfd_link_pic (info
)
1333 && (sec
->flags
& SEC_ALLOC
) != 0
1335 && (h
->root
.type
== bfd_link_hash_defweak
1336 || !h
->def_regular
)))
1338 struct elf_dyn_relocs
*p
;
1339 struct elf_dyn_relocs
**head
;
1341 /* We must copy these reloc types into the output file.
1342 Create a reloc section in dynobj and make room for
1346 if (htab
->elf
.dynobj
== NULL
)
1347 htab
->elf
.dynobj
= abfd
;
1349 sreloc
= _bfd_elf_make_dynamic_reloc_section
1350 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
1356 /* If this is a global symbol, we count the number of
1357 relocations we need for this symbol. */
1360 head
= &((struct elf_s390_link_hash_entry
*) h
)->dyn_relocs
;
1364 /* Track dynamic relocs needed for local syms too.
1365 We really need local syms available to do this
1370 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
1375 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
1379 vpp
= &elf_section_data (s
)->local_dynrel
;
1380 head
= (struct elf_dyn_relocs
**) vpp
;
1384 if (p
== NULL
|| p
->sec
!= sec
)
1386 bfd_size_type amt
= sizeof *p
;
1388 p
= ((struct elf_dyn_relocs
*)
1389 bfd_alloc (htab
->elf
.dynobj
, amt
));
1400 if (ELF32_R_TYPE (rel
->r_info
) == R_390_PC16
1401 || ELF32_R_TYPE (rel
->r_info
) == R_390_PC12DBL
1402 || ELF32_R_TYPE (rel
->r_info
) == R_390_PC16DBL
1403 || ELF32_R_TYPE (rel
->r_info
) == R_390_PC24DBL
1404 || ELF32_R_TYPE (rel
->r_info
) == R_390_PC32DBL
1405 || ELF32_R_TYPE (rel
->r_info
) == R_390_PC32
)
1410 /* This relocation describes the C++ object vtable hierarchy.
1411 Reconstruct it for later use during GC. */
1412 case R_390_GNU_VTINHERIT
:
1413 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1417 /* This relocation describes which C++ vtable entries are actually
1418 used. Record for later use during GC. */
1419 case R_390_GNU_VTENTRY
:
1420 BFD_ASSERT (h
!= NULL
);
1422 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1434 /* Return the section that should be marked against GC for a given
1438 elf_s390_gc_mark_hook (asection
*sec
,
1439 struct bfd_link_info
*info
,
1440 Elf_Internal_Rela
*rel
,
1441 struct elf_link_hash_entry
*h
,
1442 Elf_Internal_Sym
*sym
)
1445 switch (ELF32_R_TYPE (rel
->r_info
))
1447 case R_390_GNU_VTINHERIT
:
1448 case R_390_GNU_VTENTRY
:
1451 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1455 /* Update the got entry reference counts for the section being removed. */
1458 elf_s390_gc_sweep_hook (bfd
*abfd
,
1459 struct bfd_link_info
*info
,
1461 const Elf_Internal_Rela
*relocs
)
1463 struct elf_s390_link_hash_table
*htab
;
1464 Elf_Internal_Shdr
*symtab_hdr
;
1465 struct elf_link_hash_entry
**sym_hashes
;
1466 bfd_signed_vma
*local_got_refcounts
;
1467 const Elf_Internal_Rela
*rel
, *relend
;
1469 if (bfd_link_relocatable (info
))
1472 htab
= elf_s390_hash_table (info
);
1476 elf_section_data (sec
)->local_dynrel
= NULL
;
1478 symtab_hdr
= &elf_symtab_hdr (abfd
);
1479 sym_hashes
= elf_sym_hashes (abfd
);
1480 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1482 relend
= relocs
+ sec
->reloc_count
;
1483 for (rel
= relocs
; rel
< relend
; rel
++)
1485 unsigned long r_symndx
;
1486 unsigned int r_type
;
1487 struct elf_link_hash_entry
*h
= NULL
;
1489 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1490 if (r_symndx
>= symtab_hdr
->sh_info
)
1492 struct elf_s390_link_hash_entry
*eh
;
1493 struct elf_dyn_relocs
**pp
;
1494 struct elf_dyn_relocs
*p
;
1496 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1497 while (h
->root
.type
== bfd_link_hash_indirect
1498 || h
->root
.type
== bfd_link_hash_warning
)
1499 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1500 eh
= (struct elf_s390_link_hash_entry
*) h
;
1502 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
1505 /* Everything must go for SEC. */
1512 Elf_Internal_Sym
*isym
;
1514 /* A local symbol. */
1515 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
1520 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
1522 struct plt_entry
*plt
= elf_s390_local_plt (abfd
);
1523 if (plt
[r_symndx
].plt
.refcount
> 0)
1524 plt
[r_symndx
].plt
.refcount
--;
1528 r_type
= ELF32_R_TYPE (rel
->r_info
);
1529 r_type
= elf_s390_tls_transition (info
, r_type
, h
!= NULL
);
1532 case R_390_TLS_LDM32
:
1533 if (elf_s390_hash_table (info
)->tls_ldm_got
.refcount
> 0)
1534 elf_s390_hash_table (info
)->tls_ldm_got
.refcount
-= 1;
1537 case R_390_GOTOFF16
:
1538 case R_390_GOTOFF32
:
1539 if (h
!= NULL
&& s390_is_ifunc_symbol_p (h
) && h
->def_regular
)
1546 case R_390_GOTPCDBL
:
1549 case R_390_TLS_GD32
:
1550 case R_390_TLS_IE32
:
1551 case R_390_TLS_GOTIE12
:
1552 case R_390_TLS_GOTIE20
:
1553 case R_390_TLS_GOTIE32
:
1554 case R_390_TLS_IEENT
:
1562 if (h
->got
.refcount
> 0)
1563 h
->got
.refcount
-= 1;
1565 else if (local_got_refcounts
!= NULL
)
1567 if (local_got_refcounts
[r_symndx
] > 0)
1568 local_got_refcounts
[r_symndx
] -= 1;
1583 if (bfd_link_pic (info
))
1587 case R_390_PLT12DBL
:
1588 case R_390_PLT16DBL
:
1589 case R_390_PLT24DBL
:
1590 case R_390_PLT32DBL
:
1592 case R_390_PLTOFF16
:
1593 case R_390_PLTOFF32
:
1596 if (h
->plt
.refcount
> 0)
1597 h
->plt
.refcount
-= 1;
1601 case R_390_GOTPLT12
:
1602 case R_390_GOTPLT16
:
1603 case R_390_GOTPLT20
:
1604 case R_390_GOTPLT32
:
1605 case R_390_GOTPLTENT
:
1608 if (h
->plt
.refcount
> 0)
1610 ((struct elf_s390_link_hash_entry
*) h
)->gotplt_refcount
--;
1611 h
->plt
.refcount
-= 1;
1614 else if (local_got_refcounts
!= NULL
)
1616 if (local_got_refcounts
[r_symndx
] > 0)
1617 local_got_refcounts
[r_symndx
] -= 1;
1629 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1630 entry but we found we will not create any. Called when we find we will
1631 not have any PLT for this symbol, by for example
1632 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1633 or elf_s390_size_dynamic_sections if no dynamic sections will be
1634 created (we're only linking static objects). */
1637 elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry
*h
)
1639 if (h
->elf
.root
.type
== bfd_link_hash_warning
)
1640 h
= (struct elf_s390_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
1642 if (h
->gotplt_refcount
<= 0)
1645 /* We simply add the number of gotplt references to the number
1646 * of got references for this symbol. */
1647 h
->elf
.got
.refcount
+= h
->gotplt_refcount
;
1648 h
->gotplt_refcount
= -1;
1651 /* Adjust a symbol defined by a dynamic object and referenced by a
1652 regular object. The current definition is in some section of the
1653 dynamic object, but we're not including those sections. We have to
1654 change the definition to something the rest of the link can
1658 elf_s390_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1659 struct elf_link_hash_entry
*h
)
1661 struct elf_s390_link_hash_table
*htab
;
1664 /* STT_GNU_IFUNC symbol must go through PLT. */
1665 if (s390_is_ifunc_symbol_p (h
))
1667 /* All local STT_GNU_IFUNC references must be treated as local
1668 calls via local PLT. */
1669 if (h
->ref_regular
&& SYMBOL_CALLS_LOCAL (info
, h
))
1671 bfd_size_type pc_count
= 0, count
= 0;
1672 struct elf_dyn_relocs
**pp
;
1673 struct elf_s390_link_hash_entry
*eh
;
1674 struct elf_dyn_relocs
*p
;
1676 eh
= (struct elf_s390_link_hash_entry
*) h
;
1677 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
1679 pc_count
+= p
->pc_count
;
1680 p
->count
-= p
->pc_count
;
1689 if (pc_count
|| count
)
1693 if (h
->plt
.refcount
<= 0)
1694 h
->plt
.refcount
= 1;
1696 h
->plt
.refcount
+= 1;
1700 if (h
->plt
.refcount
<= 0)
1702 h
->plt
.offset
= (bfd_vma
) -1;
1708 /* If this is a function, put it in the procedure linkage table. We
1709 will fill in the contents of the procedure linkage table later
1710 (although we could actually do it here). */
1711 if (h
->type
== STT_FUNC
1714 if (h
->plt
.refcount
<= 0
1715 || SYMBOL_CALLS_LOCAL (info
, h
)
1716 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
1717 && h
->root
.type
!= bfd_link_hash_undefweak
))
1719 /* This case can occur if we saw a PLT32 reloc in an input
1720 file, but the symbol was never referred to by a dynamic
1721 object, or if all references were garbage collected. In
1722 such a case, we don't actually need to build a procedure
1723 linkage table, and we can just do a PC32 reloc instead. */
1724 h
->plt
.offset
= (bfd_vma
) -1;
1726 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1732 /* It's possible that we incorrectly decided a .plt reloc was
1733 needed for an R_390_PC32 reloc to a non-function sym in
1734 check_relocs. We can't decide accurately between function and
1735 non-function syms in check-relocs; Objects loaded later in
1736 the link may change h->type. So fix it now. */
1737 h
->plt
.offset
= (bfd_vma
) -1;
1739 /* If this is a weak symbol, and there is a real definition, the
1740 processor independent code will have arranged for us to see the
1741 real definition first, and we can just use the same value. */
1742 if (h
->u
.weakdef
!= NULL
)
1744 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
1745 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
1746 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
1747 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
1748 if (ELIMINATE_COPY_RELOCS
|| info
->nocopyreloc
)
1749 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
1753 /* This is a reference to a symbol defined by a dynamic object which
1754 is not a function. */
1756 /* If we are creating a shared library, we must presume that the
1757 only references to the symbol are via the global offset table.
1758 For such cases we need not do anything here; the relocations will
1759 be handled correctly by relocate_section. */
1760 if (bfd_link_pic (info
))
1763 /* If there are no references to this symbol that do not use the
1764 GOT, we don't need to generate a copy reloc. */
1765 if (!h
->non_got_ref
)
1768 /* If -z nocopyreloc was given, we won't generate them either. */
1769 if (info
->nocopyreloc
)
1775 if (ELIMINATE_COPY_RELOCS
)
1777 struct elf_s390_link_hash_entry
* eh
;
1778 struct elf_dyn_relocs
*p
;
1780 eh
= (struct elf_s390_link_hash_entry
*) h
;
1781 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1783 s
= p
->sec
->output_section
;
1784 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1788 /* If we didn't find any dynamic relocs in read-only sections, then
1789 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1797 /* We must allocate the symbol in our .dynbss section, which will
1798 become part of the .bss section of the executable. There will be
1799 an entry for this symbol in the .dynsym section. The dynamic
1800 object will contain position independent code, so all references
1801 from the dynamic object to this symbol will go through the global
1802 offset table. The dynamic linker will use the .dynsym entry to
1803 determine the address it must put in the global offset table, so
1804 both the dynamic object and the regular object will refer to the
1805 same memory location for the variable. */
1807 htab
= elf_s390_hash_table (info
);
1809 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1810 copy the initial value out of the dynamic object and into the
1811 runtime process image. */
1812 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
1814 htab
->srelbss
->size
+= sizeof (Elf32_External_Rela
);
1820 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
1823 /* Allocate space in .plt, .got and associated reloc sections for
1827 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
1829 struct bfd_link_info
*info
;
1830 struct elf_s390_link_hash_table
*htab
;
1831 struct elf_s390_link_hash_entry
*eh
= (struct elf_s390_link_hash_entry
*)h
;
1832 struct elf_dyn_relocs
*p
;
1834 if (h
->root
.type
== bfd_link_hash_indirect
)
1837 info
= (struct bfd_link_info
*) inf
;
1838 htab
= elf_s390_hash_table (info
);
1840 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1841 here if it is defined and referenced in a non-shared object. */
1842 if (s390_is_ifunc_symbol_p (h
) && h
->def_regular
)
1843 return s390_elf_allocate_ifunc_dyn_relocs (info
, h
);
1844 else if (htab
->elf
.dynamic_sections_created
1845 && h
->plt
.refcount
> 0)
1847 /* Make sure this symbol is output as a dynamic symbol.
1848 Undefined weak syms won't yet be marked as dynamic. */
1849 if (h
->dynindx
== -1
1850 && !h
->forced_local
)
1852 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1856 if (bfd_link_pic (info
)
1857 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
1859 asection
*s
= htab
->elf
.splt
;
1861 /* If this is the first .plt entry, make room for the special
1864 s
->size
+= PLT_FIRST_ENTRY_SIZE
;
1866 h
->plt
.offset
= s
->size
;
1868 /* If this symbol is not defined in a regular file, and we are
1869 not generating a shared library, then set the symbol to this
1870 location in the .plt. This is required to make function
1871 pointers compare as equal between the normal executable and
1872 the shared library. */
1873 if (! bfd_link_pic (info
)
1876 h
->root
.u
.def
.section
= s
;
1877 h
->root
.u
.def
.value
= h
->plt
.offset
;
1880 /* Make room for this entry. */
1881 s
->size
+= PLT_ENTRY_SIZE
;
1883 /* We also need to make an entry in the .got.plt section, which
1884 will be placed in the .got section by the linker script. */
1885 htab
->elf
.sgotplt
->size
+= GOT_ENTRY_SIZE
;
1887 /* We also need to make an entry in the .rela.plt section. */
1888 htab
->elf
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
1892 h
->plt
.offset
= (bfd_vma
) -1;
1894 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1899 h
->plt
.offset
= (bfd_vma
) -1;
1901 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1904 /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to
1905 the binary, we can optimize a bit. IE32 and GOTIE32 get converted
1906 to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT
1907 we can save the dynamic TLS relocation. */
1908 if (h
->got
.refcount
> 0
1909 && !bfd_link_pic (info
)
1911 && elf_s390_hash_entry(h
)->tls_type
>= GOT_TLS_IE
)
1913 if (elf_s390_hash_entry(h
)->tls_type
== GOT_TLS_IE_NLT
)
1914 /* For the GOTIE access without a literal pool entry the offset has
1915 to be stored somewhere. The immediate value in the instruction
1916 is not bit enough so the value is stored in the got. */
1918 h
->got
.offset
= htab
->elf
.sgot
->size
;
1919 htab
->elf
.sgot
->size
+= GOT_ENTRY_SIZE
;
1922 h
->got
.offset
= (bfd_vma
) -1;
1924 else if (h
->got
.refcount
> 0)
1928 int tls_type
= elf_s390_hash_entry(h
)->tls_type
;
1930 /* Make sure this symbol is output as a dynamic symbol.
1931 Undefined weak syms won't yet be marked as dynamic. */
1932 if (h
->dynindx
== -1
1933 && !h
->forced_local
)
1935 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1940 h
->got
.offset
= s
->size
;
1941 s
->size
+= GOT_ENTRY_SIZE
;
1942 /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */
1943 if (tls_type
== GOT_TLS_GD
)
1944 s
->size
+= GOT_ENTRY_SIZE
;
1945 dyn
= htab
->elf
.dynamic_sections_created
;
1946 /* R_390_TLS_IE32 needs one dynamic relocation,
1947 R_390_TLS_GD32 needs one if local symbol and two if global. */
1948 if ((tls_type
== GOT_TLS_GD
&& h
->dynindx
== -1)
1949 || tls_type
>= GOT_TLS_IE
)
1950 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
1951 else if (tls_type
== GOT_TLS_GD
)
1952 htab
->elf
.srelgot
->size
+= 2 * sizeof (Elf32_External_Rela
);
1953 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
1954 || h
->root
.type
!= bfd_link_hash_undefweak
)
1955 && (bfd_link_pic (info
)
1956 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
1957 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
1960 h
->got
.offset
= (bfd_vma
) -1;
1962 if (eh
->dyn_relocs
== NULL
)
1965 /* In the shared -Bsymbolic case, discard space allocated for
1966 dynamic pc-relative relocs against symbols which turn out to be
1967 defined in regular objects. For the normal shared case, discard
1968 space for pc-relative relocs that have become local due to symbol
1969 visibility changes. */
1971 if (bfd_link_pic (info
))
1973 if (SYMBOL_CALLS_LOCAL (info
, h
))
1975 struct elf_dyn_relocs
**pp
;
1977 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
1979 p
->count
-= p
->pc_count
;
1988 /* Also discard relocs on undefined weak syms with non-default
1990 if (eh
->dyn_relocs
!= NULL
1991 && h
->root
.type
== bfd_link_hash_undefweak
)
1993 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
1994 eh
->dyn_relocs
= NULL
;
1996 /* Make sure undefined weak symbols are output as a dynamic
1998 else if (h
->dynindx
== -1
1999 && !h
->forced_local
)
2001 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2006 else if (ELIMINATE_COPY_RELOCS
)
2008 /* For the non-shared case, discard space for relocs against
2009 symbols which turn out to need copy relocs or are not
2015 || (htab
->elf
.dynamic_sections_created
2016 && (h
->root
.type
== bfd_link_hash_undefweak
2017 || h
->root
.type
== bfd_link_hash_undefined
))))
2019 /* Make sure this symbol is output as a dynamic symbol.
2020 Undefined weak syms won't yet be marked as dynamic. */
2021 if (h
->dynindx
== -1
2022 && !h
->forced_local
)
2024 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2028 /* If that succeeded, we know we'll be keeping all the
2030 if (h
->dynindx
!= -1)
2034 eh
->dyn_relocs
= NULL
;
2039 /* Finally, allocate space. */
2040 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2042 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
2044 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2050 /* Find any dynamic relocs that apply to read-only sections. */
2053 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
2055 struct elf_s390_link_hash_entry
*eh
;
2056 struct elf_dyn_relocs
*p
;
2058 eh
= (struct elf_s390_link_hash_entry
*) h
;
2059 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2061 asection
*s
= p
->sec
->output_section
;
2063 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
2065 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
2067 info
->flags
|= DF_TEXTREL
;
2069 /* Not an error, just cut short the traversal. */
2076 /* Set the sizes of the dynamic sections. */
2079 elf_s390_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2080 struct bfd_link_info
*info
)
2082 struct elf_s390_link_hash_table
*htab
;
2088 htab
= elf_s390_hash_table (info
);
2089 dynobj
= htab
->elf
.dynobj
;
2093 if (htab
->elf
.dynamic_sections_created
)
2095 /* Set the contents of the .interp section to the interpreter. */
2096 if (bfd_link_executable (info
) && !info
->nointerp
)
2098 s
= bfd_get_linker_section (dynobj
, ".interp");
2101 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2102 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2106 /* Set up .got offsets for local syms, and space for local dynamic
2108 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
2110 bfd_signed_vma
*local_got
;
2111 bfd_signed_vma
*end_local_got
;
2112 char *local_tls_type
;
2113 bfd_size_type locsymcount
;
2114 Elf_Internal_Shdr
*symtab_hdr
;
2116 struct plt_entry
*local_plt
;
2119 if (! is_s390_elf (ibfd
))
2122 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2124 struct elf_dyn_relocs
*p
;
2126 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
2128 if (!bfd_is_abs_section (p
->sec
)
2129 && bfd_is_abs_section (p
->sec
->output_section
))
2131 /* Input section has been discarded, either because
2132 it is a copy of a linkonce section or due to
2133 linker script /DISCARD/, so we'll be discarding
2136 else if (p
->count
!= 0)
2138 srela
= elf_section_data (p
->sec
)->sreloc
;
2139 srela
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2140 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2141 info
->flags
|= DF_TEXTREL
;
2146 local_got
= elf_local_got_refcounts (ibfd
);
2150 symtab_hdr
= &elf_symtab_hdr (ibfd
);
2151 locsymcount
= symtab_hdr
->sh_info
;
2152 end_local_got
= local_got
+ locsymcount
;
2153 local_tls_type
= elf_s390_local_got_tls_type (ibfd
);
2155 srela
= htab
->elf
.srelgot
;
2156 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
2160 *local_got
= s
->size
;
2161 s
->size
+= GOT_ENTRY_SIZE
;
2162 if (*local_tls_type
== GOT_TLS_GD
)
2163 s
->size
+= GOT_ENTRY_SIZE
;
2164 if (bfd_link_pic (info
))
2165 srela
->size
+= sizeof (Elf32_External_Rela
);
2168 *local_got
= (bfd_vma
) -1;
2170 local_plt
= elf_s390_local_plt (ibfd
);
2171 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
2173 if (local_plt
[i
].plt
.refcount
> 0)
2175 local_plt
[i
].plt
.offset
= htab
->elf
.iplt
->size
;
2176 htab
->elf
.iplt
->size
+= PLT_ENTRY_SIZE
;
2177 htab
->elf
.igotplt
->size
+= GOT_ENTRY_SIZE
;
2178 htab
->elf
.irelplt
->size
+= RELA_ENTRY_SIZE
;
2181 local_plt
[i
].plt
.offset
= (bfd_vma
) -1;
2185 if (htab
->tls_ldm_got
.refcount
> 0)
2187 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32
2189 htab
->tls_ldm_got
.offset
= htab
->elf
.sgot
->size
;
2190 htab
->elf
.sgot
->size
+= 2 * GOT_ENTRY_SIZE
;
2191 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
2194 htab
->tls_ldm_got
.offset
= -1;
2196 /* Allocate global sym .plt and .got entries, and space for global
2197 sym dynamic relocs. */
2198 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
2200 /* We now have determined the sizes of the various dynamic sections.
2201 Allocate memory for them. */
2203 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2205 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2208 if (s
== htab
->elf
.splt
2209 || s
== htab
->elf
.sgot
2210 || s
== htab
->elf
.sgotplt
2211 || s
== htab
->sdynbss
2212 || s
== htab
->elf
.iplt
2213 || s
== htab
->elf
.igotplt
2214 || s
== htab
->irelifunc
)
2216 /* Strip this section if we don't need it; see the
2219 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
2224 /* We use the reloc_count field as a counter if we need
2225 to copy relocs into the output file. */
2230 /* It's not one of our sections, so don't allocate space. */
2236 /* If we don't need this section, strip it from the
2237 output file. This is to handle .rela.bss and
2238 .rela.plt. We must create it in
2239 create_dynamic_sections, because it must be created
2240 before the linker maps input sections to output
2241 sections. The linker does that before
2242 adjust_dynamic_symbol is called, and it is that
2243 function which decides whether anything needs to go
2244 into these sections. */
2246 s
->flags
|= SEC_EXCLUDE
;
2250 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2253 /* Allocate memory for the section contents. We use bfd_zalloc
2254 here in case unused entries are not reclaimed before the
2255 section's contents are written out. This should not happen,
2256 but this way if it does, we get a R_390_NONE reloc instead
2258 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
2259 if (s
->contents
== NULL
)
2263 if (htab
->elf
.dynamic_sections_created
)
2265 /* Add some entries to the .dynamic section. We fill in the
2266 values later, in elf_s390_finish_dynamic_sections, but we
2267 must add the entries now so that we get the correct size for
2268 the .dynamic section. The DT_DEBUG entry is filled in by the
2269 dynamic linker and used by the debugger. */
2270 #define add_dynamic_entry(TAG, VAL) \
2271 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2273 if (bfd_link_executable (info
))
2275 if (!add_dynamic_entry (DT_DEBUG
, 0))
2279 if (htab
->elf
.splt
->size
!= 0)
2281 if (!add_dynamic_entry (DT_PLTGOT
, 0)
2282 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
2283 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2284 || !add_dynamic_entry (DT_JMPREL
, 0))
2290 if (!add_dynamic_entry (DT_RELA
, 0)
2291 || !add_dynamic_entry (DT_RELASZ
, 0)
2292 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
2295 /* If any dynamic relocs apply to a read-only section,
2296 then we need a DT_TEXTREL entry. */
2297 if ((info
->flags
& DF_TEXTREL
) == 0)
2298 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
2300 if ((info
->flags
& DF_TEXTREL
) != 0)
2302 if (!add_dynamic_entry (DT_TEXTREL
, 0))
2307 #undef add_dynamic_entry
2312 /* Return the base VMA address which should be subtracted from real addresses
2313 when resolving @dtpoff relocation.
2314 This is PT_TLS segment p_vaddr. */
2317 dtpoff_base (struct bfd_link_info
*info
)
2319 /* If tls_sec is NULL, we should have signalled an error already. */
2320 if (elf_hash_table (info
)->tls_sec
== NULL
)
2322 return elf_hash_table (info
)->tls_sec
->vma
;
2325 /* Return the relocation value for @tpoff relocation
2326 if STT_TLS virtual address is ADDRESS. */
2329 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
2331 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
2333 /* If tls_sec is NULL, we should have signalled an error already. */
2334 if (htab
->tls_sec
== NULL
)
2336 return htab
->tls_size
+ htab
->tls_sec
->vma
- address
;
2339 /* Complain if TLS instruction relocation is against an invalid
2343 invalid_tls_insn (bfd
*input_bfd
,
2344 asection
*input_section
,
2345 Elf_Internal_Rela
*rel
)
2347 reloc_howto_type
*howto
;
2349 howto
= elf_howto_table
+ ELF32_R_TYPE (rel
->r_info
);
2351 /* xgettext:c-format */
2352 (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2355 (long) rel
->r_offset
,
2357 bfd_set_error (bfd_error_bad_value
);
2360 /* Relocate a 390 ELF section. */
2363 elf_s390_relocate_section (bfd
*output_bfd
,
2364 struct bfd_link_info
*info
,
2366 asection
*input_section
,
2368 Elf_Internal_Rela
*relocs
,
2369 Elf_Internal_Sym
*local_syms
,
2370 asection
**local_sections
)
2372 struct elf_s390_link_hash_table
*htab
;
2373 Elf_Internal_Shdr
*symtab_hdr
;
2374 struct elf_link_hash_entry
**sym_hashes
;
2375 bfd_vma
*local_got_offsets
;
2376 Elf_Internal_Rela
*rel
;
2377 Elf_Internal_Rela
*relend
;
2379 BFD_ASSERT (is_s390_elf (input_bfd
));
2381 htab
= elf_s390_hash_table (info
);
2382 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
2383 sym_hashes
= elf_sym_hashes (input_bfd
);
2384 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2387 relend
= relocs
+ input_section
->reloc_count
;
2388 for (; rel
< relend
; rel
++)
2390 unsigned int r_type
;
2391 reloc_howto_type
*howto
;
2392 unsigned long r_symndx
;
2393 struct elf_link_hash_entry
*h
;
2394 Elf_Internal_Sym
*sym
;
2398 bfd_boolean unresolved_reloc
;
2399 bfd_reloc_status_type r
;
2401 asection
*base_got
= htab
->elf
.sgot
;
2403 r_type
= ELF32_R_TYPE (rel
->r_info
);
2404 if (r_type
== (int) R_390_GNU_VTINHERIT
2405 || r_type
== (int) R_390_GNU_VTENTRY
)
2407 if (r_type
>= (int) R_390_max
)
2409 bfd_set_error (bfd_error_bad_value
);
2413 howto
= elf_howto_table
+ r_type
;
2414 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2419 unresolved_reloc
= FALSE
;
2420 if (r_symndx
< symtab_hdr
->sh_info
)
2422 sym
= local_syms
+ r_symndx
;
2423 sec
= local_sections
[r_symndx
];
2424 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
2426 struct plt_entry
*local_plt
= elf_s390_local_plt (input_bfd
);
2427 if (local_plt
== NULL
)
2430 /* Address of the PLT slot. */
2431 relocation
= (htab
->elf
.iplt
->output_section
->vma
2432 + htab
->elf
.iplt
->output_offset
2433 + local_plt
[r_symndx
].plt
.offset
);
2437 case R_390_PLTOFF16
:
2438 case R_390_PLTOFF32
:
2439 relocation
-= htab
->elf
.sgot
->output_section
->vma
;
2441 case R_390_GOTPLT12
:
2442 case R_390_GOTPLT16
:
2443 case R_390_GOTPLT20
:
2444 case R_390_GOTPLT32
:
2445 case R_390_GOTPLTENT
:
2452 /* Write the PLT slot address into the GOT slot. */
2453 bfd_put_32 (output_bfd
, relocation
,
2454 htab
->elf
.sgot
->contents
+
2455 local_got_offsets
[r_symndx
]);
2456 relocation
= (local_got_offsets
[r_symndx
] +
2457 htab
->elf
.sgot
->output_offset
);
2459 if (r_type
== R_390_GOTENT
|| r_type
== R_390_GOTPLTENT
)
2460 relocation
+= htab
->elf
.sgot
->output_section
->vma
;
2466 /* The output section is needed later in
2467 finish_dynamic_section when creating the dynamic
2469 local_plt
[r_symndx
].sec
= sec
;
2473 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2477 bfd_boolean warned ATTRIBUTE_UNUSED
;
2478 bfd_boolean ignored ATTRIBUTE_UNUSED
;
2480 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2481 r_symndx
, symtab_hdr
, sym_hashes
,
2483 unresolved_reloc
, warned
, ignored
);
2486 if (sec
!= NULL
&& discarded_section (sec
))
2487 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2488 rel
, 1, relend
, howto
, 0, contents
);
2490 if (bfd_link_relocatable (info
))
2495 case R_390_GOTPLT12
:
2496 case R_390_GOTPLT16
:
2497 case R_390_GOTPLT20
:
2498 case R_390_GOTPLT32
:
2499 case R_390_GOTPLTENT
:
2500 /* There are three cases for a GOTPLT relocation. 1) The
2501 relocation is against the jump slot entry of a plt that
2502 will get emitted to the output file. 2) The relocation
2503 is against the jump slot of a plt entry that has been
2504 removed. elf_s390_adjust_gotplt has created a GOT entry
2505 as replacement. 3) The relocation is against a local symbol.
2506 Cases 2) and 3) are the same as the GOT relocation code
2507 so we just have to test for case 1 and fall through for
2509 if (h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
2513 if (s390_is_ifunc_symbol_p (h
))
2515 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
;
2516 relocation
= (plt_index
* GOT_ENTRY_SIZE
+
2517 htab
->elf
.igotplt
->output_offset
);
2518 if (r_type
== R_390_GOTPLTENT
)
2519 relocation
+= htab
->elf
.igotplt
->output_section
->vma
;
2524 Current offset - size first entry / entry size. */
2525 plt_index
= (h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
) /
2528 /* Offset in GOT is PLT index plus GOT headers(3)
2529 times 4, addr & GOT addr. */
2530 relocation
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
2531 if (r_type
== R_390_GOTPLTENT
)
2532 relocation
+= htab
->elf
.sgot
->output_section
->vma
;
2534 unresolved_reloc
= FALSE
;
2544 /* Relocation is to the entry for this symbol in the global
2546 if (base_got
== NULL
)
2553 off
= h
->got
.offset
;
2554 dyn
= htab
->elf
.dynamic_sections_created
;
2556 if (s390_is_ifunc_symbol_p (h
))
2558 BFD_ASSERT (h
->plt
.offset
!= (bfd_vma
) -1);
2559 if (off
== (bfd_vma
)-1)
2561 /* No explicit GOT usage so redirect to the
2563 base_got
= htab
->elf
.igotplt
;
2564 off
= h
->plt
.offset
/ PLT_ENTRY_SIZE
* GOT_ENTRY_SIZE
;
2568 /* Explicit GOT slots must contain the address
2569 of the PLT slot. This will be handled in
2570 finish_dynamic_symbol. */
2573 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2574 bfd_link_pic (info
),
2576 || (bfd_link_pic (info
)
2577 && SYMBOL_REFERENCES_LOCAL (info
, h
))
2578 || (ELF_ST_VISIBILITY (h
->other
)
2579 && h
->root
.type
== bfd_link_hash_undefweak
))
2582 /* This is actually a static link, or it is a
2583 -Bsymbolic link and the symbol is defined
2584 locally, or the symbol was forced to be local
2585 because of a version file. We must initialize
2586 this entry in the global offset table. Since the
2587 offset must always be a multiple of 2, we use the
2588 least significant bit to record whether we have
2589 initialized it already.
2591 When doing a dynamic link, we create a .rel.got
2592 relocation entry to initialize the value. This
2593 is done in the finish_dynamic_symbol routine. */
2598 bfd_put_32 (output_bfd
, relocation
,
2599 base_got
->contents
+ off
);
2604 && bfd_link_pic (info
)
2605 && SYMBOL_REFERENCES_LOCAL (info
, h
))
2606 /* lrl rx,sym@GOTENT -> larl rx, sym */
2607 && ((r_type
== R_390_GOTENT
2608 && (bfd_get_16 (input_bfd
,
2609 contents
+ rel
->r_offset
- 2)
2610 & 0xff0f) == 0xc40d)
2611 /* ly rx, sym@GOT(r12) -> larl rx, sym */
2612 || (r_type
== R_390_GOT20
2613 && (bfd_get_32 (input_bfd
,
2614 contents
+ rel
->r_offset
- 2)
2615 & 0xff00f000) == 0xe300c000
2616 && bfd_get_8 (input_bfd
,
2617 contents
+ rel
->r_offset
+ 3) == 0x58)))
2619 unsigned short new_insn
=
2620 (0xc000 | (bfd_get_8 (input_bfd
,
2621 contents
+ rel
->r_offset
- 1) & 0xf0));
2622 bfd_put_16 (output_bfd
, new_insn
,
2623 contents
+ rel
->r_offset
- 2);
2624 r_type
= R_390_PC32DBL
;
2626 howto
= elf_howto_table
+ r_type
;
2627 relocation
= h
->root
.u
.def
.value
2628 + h
->root
.u
.def
.section
->output_section
->vma
2629 + h
->root
.u
.def
.section
->output_offset
;
2634 unresolved_reloc
= FALSE
;
2638 if (local_got_offsets
== NULL
)
2641 off
= local_got_offsets
[r_symndx
];
2643 /* The offset must always be a multiple of 4. We use
2644 the least significant bit to record whether we have
2645 already generated the necessary reloc. */
2650 bfd_put_32 (output_bfd
, relocation
,
2651 htab
->elf
.sgot
->contents
+ off
);
2653 if (bfd_link_pic (info
))
2656 Elf_Internal_Rela outrel
;
2659 srelgot
= htab
->elf
.srelgot
;
2660 if (srelgot
== NULL
)
2663 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
2664 + htab
->elf
.sgot
->output_offset
2666 outrel
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
2667 outrel
.r_addend
= relocation
;
2668 loc
= srelgot
->contents
;
2669 loc
+= srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
2670 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
2673 local_got_offsets
[r_symndx
] |= 1;
2677 if (off
>= (bfd_vma
) -2)
2680 relocation
= base_got
->output_offset
+ off
;
2682 /* For @GOTENT the relocation is against the offset between
2683 the instruction and the symbols entry in the GOT and not
2684 between the start of the GOT and the symbols entry. We
2685 add the vma of the GOT to get the correct value. */
2686 if ( r_type
== R_390_GOTENT
2687 || r_type
== R_390_GOTPLTENT
)
2688 relocation
+= base_got
->output_section
->vma
;
2692 case R_390_GOTOFF16
:
2693 case R_390_GOTOFF32
:
2694 /* Relocation is relative to the start of the global offset
2698 && s390_is_ifunc_symbol_p (h
)
2700 && !bfd_link_executable (info
))
2702 relocation
= (htab
->elf
.iplt
->output_section
->vma
2703 + htab
->elf
.iplt
->output_offset
2705 - htab
->elf
.sgot
->output_section
->vma
);
2709 /* Note that sgot->output_offset is not involved in this
2710 calculation. We always want the start of .got. If we
2711 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2712 permitted by the ABI, we might have to change this
2714 relocation
-= htab
->elf
.sgot
->output_section
->vma
;
2718 case R_390_GOTPCDBL
:
2719 /* Use global offset table as symbol value. */
2720 relocation
= htab
->elf
.sgot
->output_section
->vma
;
2721 unresolved_reloc
= FALSE
;
2724 case R_390_PLT12DBL
:
2725 case R_390_PLT16DBL
:
2726 case R_390_PLT24DBL
:
2727 case R_390_PLT32DBL
:
2729 /* Relocation is to the entry for this symbol in the
2730 procedure linkage table. */
2732 /* Resolve a PLT32 reloc against a local symbol directly,
2733 without using the procedure linkage table. */
2737 if (h
->plt
.offset
== (bfd_vma
) -1
2738 || (htab
->elf
.splt
== NULL
&& htab
->elf
.iplt
== NULL
))
2740 /* We didn't make a PLT entry for this symbol. This
2741 happens when statically linking PIC code, or when
2742 using -Bsymbolic. */
2746 if (s390_is_ifunc_symbol_p (h
))
2747 relocation
= (htab
->elf
.iplt
->output_section
->vma
2748 + htab
->elf
.iplt
->output_offset
2751 relocation
= (htab
->elf
.splt
->output_section
->vma
2752 + htab
->elf
.splt
->output_offset
2754 unresolved_reloc
= FALSE
;
2757 case R_390_PLTOFF16
:
2758 case R_390_PLTOFF32
:
2759 /* Relocation is to the entry for this symbol in the
2760 procedure linkage table relative to the start of the GOT. */
2762 /* For local symbols or if we didn't make a PLT entry for
2763 this symbol resolve the symbol directly. */
2765 || h
->plt
.offset
== (bfd_vma
) -1
2766 || (htab
->elf
.splt
== NULL
&& !s390_is_ifunc_symbol_p (h
)))
2768 relocation
-= htab
->elf
.sgot
->output_section
->vma
;
2772 if (s390_is_ifunc_symbol_p (h
))
2773 relocation
= (htab
->elf
.iplt
->output_section
->vma
2774 + htab
->elf
.iplt
->output_offset
2776 - htab
->elf
.sgot
->output_section
->vma
);
2778 relocation
= (htab
->elf
.splt
->output_section
->vma
2779 + htab
->elf
.splt
->output_offset
2781 - htab
->elf
.sgot
->output_section
->vma
);
2782 unresolved_reloc
= FALSE
;
2792 && s390_is_ifunc_symbol_p (h
)
2794 && !bfd_link_executable (info
))
2796 /* This will not work our if the function does not
2797 happen to set up the GOT pointer for some other
2798 reason. 31 bit PLT entries require r12 to hold the
2800 FIXME: Implement an errorcheck.
2801 NOTE: It will work when brasl is not available
2802 (e.g. with -m31 -march=g5) since a local function
2803 call then does use GOTOFF which implies r12 being set
2805 relocation
= (htab
->elf
.iplt
->output_section
->vma
2806 + htab
->elf
.iplt
->output_offset
2816 && s390_is_ifunc_symbol_p (h
)
2819 if (!bfd_link_pic (info
) || !h
->non_got_ref
)
2821 /* For a non-shared object STT_GNU_IFUNC symbol must
2823 relocation
= (htab
->elf
.iplt
->output_section
->vma
2824 + htab
->elf
.iplt
->output_offset
2830 /* For shared objects a runtime relocation is needed. */
2832 Elf_Internal_Rela outrel
;
2835 /* Need a dynamic relocation to get the real function
2837 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
2841 if (outrel
.r_offset
== (bfd_vma
) -1
2842 || outrel
.r_offset
== (bfd_vma
) -2)
2845 outrel
.r_offset
+= (input_section
->output_section
->vma
2846 + input_section
->output_offset
);
2848 if (h
->dynindx
== -1
2850 || bfd_link_executable (info
))
2852 /* This symbol is resolved locally. */
2853 outrel
.r_info
= ELF32_R_INFO (0, R_390_IRELATIVE
);
2854 outrel
.r_addend
= (h
->root
.u
.def
.value
2855 + h
->root
.u
.def
.section
->output_section
->vma
2856 + h
->root
.u
.def
.section
->output_offset
);
2860 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2861 outrel
.r_addend
= 0;
2864 sreloc
= htab
->elf
.irelifunc
;
2865 elf_append_rela (output_bfd
, sreloc
, &outrel
);
2867 /* If this reloc is against an external symbol, we
2868 do not want to fiddle with the addend. Otherwise,
2869 we need to include the symbol value so that it
2870 becomes an addend for the dynamic reloc. For an
2871 internal symbol, we have updated addend. */
2876 if ((input_section
->flags
& SEC_ALLOC
) == 0)
2879 if ((bfd_link_pic (info
)
2881 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2882 || h
->root
.type
!= bfd_link_hash_undefweak
)
2883 && ((r_type
!= R_390_PC16
2884 && r_type
!= R_390_PC12DBL
2885 && r_type
!= R_390_PC16DBL
2886 && r_type
!= R_390_PC24DBL
2887 && r_type
!= R_390_PC32DBL
2888 && r_type
!= R_390_PC32
)
2889 || !SYMBOL_CALLS_LOCAL (info
, h
)))
2890 || (ELIMINATE_COPY_RELOCS
2891 && !bfd_link_pic (info
)
2897 || h
->root
.type
== bfd_link_hash_undefweak
2898 || h
->root
.type
== bfd_link_hash_undefined
)))
2900 Elf_Internal_Rela outrel
;
2901 bfd_boolean skip
, relocate
;
2905 /* When generating a shared object, these relocations
2906 are copied into the output file to be resolved at run
2913 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2915 if (outrel
.r_offset
== (bfd_vma
) -1)
2917 else if (outrel
.r_offset
== (bfd_vma
) -2)
2918 skip
= TRUE
, relocate
= TRUE
;
2919 outrel
.r_offset
+= (input_section
->output_section
->vma
2920 + input_section
->output_offset
);
2923 memset (&outrel
, 0, sizeof outrel
);
2926 && (r_type
== R_390_PC16
2927 || r_type
== R_390_PC12DBL
2928 || r_type
== R_390_PC16DBL
2929 || r_type
== R_390_PC24DBL
2930 || r_type
== R_390_PC32DBL
2931 || r_type
== R_390_PC32
2932 || !bfd_link_pic (info
)
2933 || !SYMBOLIC_BIND (info
, h
)
2934 || !h
->def_regular
))
2936 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2937 outrel
.r_addend
= rel
->r_addend
;
2941 /* This symbol is local, or marked to become local. */
2942 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2943 if (r_type
== R_390_32
)
2946 outrel
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
2952 if (bfd_is_abs_section (sec
))
2954 else if (sec
== NULL
|| sec
->owner
== NULL
)
2956 bfd_set_error(bfd_error_bad_value
);
2963 osec
= sec
->output_section
;
2964 sindx
= elf_section_data (osec
)->dynindx
;
2967 osec
= htab
->elf
.text_index_section
;
2968 sindx
= elf_section_data (osec
)->dynindx
;
2970 BFD_ASSERT (sindx
!= 0);
2972 /* We are turning this relocation into one
2973 against a section symbol, so subtract out
2974 the output section's address but not the
2975 offset of the input section in the output
2977 outrel
.r_addend
-= osec
->vma
;
2979 outrel
.r_info
= ELF32_R_INFO (sindx
, r_type
);
2983 sreloc
= elf_section_data (input_section
)->sreloc
;
2987 loc
= sreloc
->contents
;
2988 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
2989 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
2991 /* If this reloc is against an external symbol, we do
2992 not want to fiddle with the addend. Otherwise, we
2993 need to include the symbol value so that it becomes
2994 an addend for the dynamic reloc. */
3000 /* Relocations for tls literal pool entries. */
3001 case R_390_TLS_IE32
:
3002 if (bfd_link_pic (info
))
3004 Elf_Internal_Rela outrel
;
3008 outrel
.r_offset
= rel
->r_offset
3009 + input_section
->output_section
->vma
3010 + input_section
->output_offset
;
3011 outrel
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
3012 sreloc
= elf_section_data (input_section
)->sreloc
;
3015 loc
= sreloc
->contents
;
3016 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3017 bfd_elf32_swap_reloc_out (output_bfd
, &outrel
, loc
);
3021 case R_390_TLS_GD32
:
3022 case R_390_TLS_GOTIE32
:
3023 r_type
= elf_s390_tls_transition (info
, r_type
, h
== NULL
);
3024 tls_type
= GOT_UNKNOWN
;
3025 if (h
== NULL
&& local_got_offsets
)
3026 tls_type
= elf_s390_local_got_tls_type (input_bfd
) [r_symndx
];
3029 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
3030 if (!bfd_link_pic (info
)
3032 && tls_type
>= GOT_TLS_IE
)
3033 r_type
= R_390_TLS_LE32
;
3035 if (r_type
== R_390_TLS_GD32
&& tls_type
>= GOT_TLS_IE
)
3036 r_type
= R_390_TLS_IE32
;
3038 if (r_type
== R_390_TLS_LE32
)
3040 /* This relocation gets optimized away by the local exec
3041 access optimization. */
3042 BFD_ASSERT (! unresolved_reloc
);
3043 bfd_put_32 (output_bfd
, -tpoff (info
, relocation
),
3044 contents
+ rel
->r_offset
);
3048 if (htab
->elf
.sgot
== NULL
)
3052 off
= h
->got
.offset
;
3055 if (local_got_offsets
== NULL
)
3058 off
= local_got_offsets
[r_symndx
];
3067 Elf_Internal_Rela outrel
;
3071 if (htab
->elf
.srelgot
== NULL
)
3074 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
3075 + htab
->elf
.sgot
->output_offset
+ off
);
3077 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
3078 if (r_type
== R_390_TLS_GD32
)
3079 dr_type
= R_390_TLS_DTPMOD
;
3081 dr_type
= R_390_TLS_TPOFF
;
3082 if (dr_type
== R_390_TLS_TPOFF
&& indx
== 0)
3083 outrel
.r_addend
= relocation
- dtpoff_base (info
);
3085 outrel
.r_addend
= 0;
3086 outrel
.r_info
= ELF32_R_INFO (indx
, dr_type
);
3087 loc
= htab
->elf
.srelgot
->contents
;
3088 loc
+= htab
->elf
.srelgot
->reloc_count
++
3089 * sizeof (Elf32_External_Rela
);
3090 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
3092 if (r_type
== R_390_TLS_GD32
)
3096 BFD_ASSERT (! unresolved_reloc
);
3097 bfd_put_32 (output_bfd
,
3098 relocation
- dtpoff_base (info
),
3099 htab
->elf
.sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
3103 outrel
.r_info
= ELF32_R_INFO (indx
, R_390_TLS_DTPOFF
);
3104 outrel
.r_offset
+= GOT_ENTRY_SIZE
;
3105 outrel
.r_addend
= 0;
3106 htab
->elf
.srelgot
->reloc_count
++;
3107 loc
+= sizeof (Elf32_External_Rela
);
3108 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
3115 local_got_offsets
[r_symndx
] |= 1;
3118 if (off
>= (bfd_vma
) -2)
3120 if (r_type
== ELF32_R_TYPE (rel
->r_info
))
3122 relocation
= htab
->elf
.sgot
->output_offset
+ off
;
3123 if (r_type
== R_390_TLS_IE32
|| r_type
== R_390_TLS_IEENT
)
3124 relocation
+= htab
->elf
.sgot
->output_section
->vma
;
3125 unresolved_reloc
= FALSE
;
3129 bfd_put_32 (output_bfd
, htab
->elf
.sgot
->output_offset
+ off
,
3130 contents
+ rel
->r_offset
);
3135 case R_390_TLS_GOTIE12
:
3136 case R_390_TLS_GOTIE20
:
3137 case R_390_TLS_IEENT
:
3140 if (local_got_offsets
== NULL
)
3142 off
= local_got_offsets
[r_symndx
];
3143 if (bfd_link_pic (info
))
3144 goto emit_tls_relocs
;
3148 off
= h
->got
.offset
;
3149 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
3150 if (bfd_link_pic (info
)
3152 || tls_type
< GOT_TLS_IE
)
3153 goto emit_tls_relocs
;
3156 if (htab
->elf
.sgot
== NULL
)
3159 BFD_ASSERT (! unresolved_reloc
);
3160 bfd_put_32 (output_bfd
, -tpoff (info
, relocation
),
3161 htab
->elf
.sgot
->contents
+ off
);
3162 relocation
= htab
->elf
.sgot
->output_offset
+ off
;
3163 if (r_type
== R_390_TLS_IEENT
)
3164 relocation
+= htab
->elf
.sgot
->output_section
->vma
;
3165 unresolved_reloc
= FALSE
;
3168 case R_390_TLS_LDM32
:
3169 if (! bfd_link_pic (info
))
3170 /* The literal pool entry this relocation refers to gets ignored
3171 by the optimized code of the local exec model. Do nothing
3172 and the value will turn out zero. */
3175 if (htab
->elf
.sgot
== NULL
)
3178 off
= htab
->tls_ldm_got
.offset
;
3183 Elf_Internal_Rela outrel
;
3186 if (htab
->elf
.srelgot
== NULL
)
3189 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
3190 + htab
->elf
.sgot
->output_offset
+ off
);
3192 bfd_put_32 (output_bfd
, 0,
3193 htab
->elf
.sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
3194 outrel
.r_info
= ELF32_R_INFO (0, R_390_TLS_DTPMOD
);
3195 outrel
.r_addend
= 0;
3196 loc
= htab
->elf
.srelgot
->contents
;
3197 loc
+= htab
->elf
.srelgot
->reloc_count
++
3198 * sizeof (Elf32_External_Rela
);
3199 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
3200 htab
->tls_ldm_got
.offset
|= 1;
3202 relocation
= htab
->elf
.sgot
->output_offset
+ off
;
3203 unresolved_reloc
= FALSE
;
3206 case R_390_TLS_LE32
:
3207 if (bfd_link_dll (info
))
3209 /* Linking a shared library with non-fpic code requires
3210 a R_390_TLS_TPOFF relocation. */
3211 Elf_Internal_Rela outrel
;
3216 outrel
.r_offset
= rel
->r_offset
3217 + input_section
->output_section
->vma
3218 + input_section
->output_offset
;
3219 if (h
!= NULL
&& h
->dynindx
!= -1)
3223 outrel
.r_info
= ELF32_R_INFO (indx
, R_390_TLS_TPOFF
);
3225 outrel
.r_addend
= relocation
- dtpoff_base (info
);
3227 outrel
.r_addend
= 0;
3228 sreloc
= elf_section_data (input_section
)->sreloc
;
3231 loc
= sreloc
->contents
;
3232 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3233 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
3237 BFD_ASSERT (! unresolved_reloc
);
3238 bfd_put_32 (output_bfd
, -tpoff (info
, relocation
),
3239 contents
+ rel
->r_offset
);
3243 case R_390_TLS_LDO32
:
3244 if (bfd_link_pic (info
) || (input_section
->flags
& SEC_DEBUGGING
))
3245 relocation
-= dtpoff_base (info
);
3247 /* When converting LDO to LE, we must negate. */
3248 relocation
= -tpoff (info
, relocation
);
3251 /* Relocations for tls instructions. */
3252 case R_390_TLS_LOAD
:
3253 case R_390_TLS_GDCALL
:
3254 case R_390_TLS_LDCALL
:
3255 tls_type
= GOT_UNKNOWN
;
3256 if (h
== NULL
&& local_got_offsets
)
3257 tls_type
= elf_s390_local_got_tls_type (input_bfd
) [r_symndx
];
3259 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
3261 if (tls_type
== GOT_TLS_GD
)
3264 if (r_type
== R_390_TLS_LOAD
)
3266 if (!bfd_link_pic (info
) && (h
== NULL
|| h
->dynindx
== -1))
3268 /* IE->LE transition. Four valid cases:
3269 l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0
3270 l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0
3271 l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0
3272 l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3273 unsigned int insn
, ry
;
3275 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
3277 if ((insn
& 0xff00f000) == 0x58000000)
3278 /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */
3279 ry
= (insn
& 0x000f0000);
3280 else if ((insn
& 0xff0f0000) == 0x58000000)
3281 /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */
3282 ry
= (insn
& 0x0000f000) << 4;
3283 else if ((insn
& 0xff00f000) == 0x5800c000)
3284 /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */
3285 ry
= (insn
& 0x000f0000);
3286 else if ((insn
& 0xff0f0000) == 0x580c0000)
3287 /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */
3288 ry
= (insn
& 0x0000f000) << 4;
3290 invalid_tls_insn (input_bfd
, input_section
, rel
);
3291 insn
= 0x18000700 | (insn
& 0x00f00000) | ry
;
3292 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
3295 else if (r_type
== R_390_TLS_GDCALL
)
3299 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
3300 if ((insn
& 0xff000fff) != 0x4d000000 &&
3301 (insn
& 0xffff0000) != 0xc0e50000 &&
3302 (insn
& 0xff000000) != 0x0d000000)
3303 invalid_tls_insn (input_bfd
, input_section
, rel
);
3304 if (!bfd_link_pic (info
) && (h
== NULL
|| h
->dynindx
== -1))
3306 if ((insn
& 0xff000000) == 0x0d000000)
3308 /* GD->LE transition.
3309 basr rx, ry -> nopr r7 */
3310 insn
= 0x07070000 | (insn
& 0xffff);
3312 else if ((insn
& 0xff000000) == 0x4d000000)
3314 /* GD->LE transition.
3315 bas %r14,0(%rx,%r13) -> bc 0,0 */
3320 /* GD->LE transition.
3321 brasl %r14,_tls_get_offset@plt -> brcl 0,. */
3323 bfd_put_16 (output_bfd
, 0x0000,
3324 contents
+ rel
->r_offset
+ 4);
3329 /* If basr is used in the pic case to invoke
3330 _tls_get_offset, something went wrong before. */
3331 if ((insn
& 0xff000000) == 0x0d000000)
3332 invalid_tls_insn (input_bfd
, input_section
, rel
);
3334 if ((insn
& 0xff000000) == 0x4d000000)
3336 /* GD->IE transition.
3337 bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */
3342 /* GD->IE transition.
3343 brasl %r14,__tls_get_addr@plt ->
3344 l %r2,0(%r2,%r12) ; bcr 0,0 */
3346 bfd_put_16 (output_bfd
, 0x0700,
3347 contents
+ rel
->r_offset
+ 4);
3350 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
3352 else if (r_type
== R_390_TLS_LDCALL
)
3354 if (!bfd_link_pic (info
))
3358 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
3359 if ((insn
& 0xff000fff) != 0x4d000000 &&
3360 (insn
& 0xffff0000) != 0xc0e50000 &&
3361 (insn
& 0xff000000) != 0x0d000000)
3362 invalid_tls_insn (input_bfd
, input_section
, rel
);
3364 if ((insn
& 0xff000000) == 0x0d000000)
3366 /* LD->LE transition.
3367 basr rx, ry -> nopr r7 */
3368 insn
= 0x07070000 | (insn
& 0xffff);
3370 else if ((insn
& 0xff000000) == 0x4d000000)
3372 /* LD->LE transition.
3373 bas %r14,0(%rx,%r13) -> bc 0,0 */
3378 /* LD->LE transition.
3379 brasl %r14,__tls_get_offset@plt -> brcl 0,. */
3381 bfd_put_16 (output_bfd
, 0x0000,
3382 contents
+ rel
->r_offset
+ 4);
3384 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
3393 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3394 because such sections are not SEC_ALLOC and thus ld.so will
3395 not process them. */
3396 if (unresolved_reloc
3397 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
3399 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
3400 rel
->r_offset
) != (bfd_vma
) -1)
3402 /* xgettext:c-format */
3403 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3406 (long) rel
->r_offset
,
3408 h
->root
.root
.string
);
3412 /* When applying a 24 bit reloc we need to start one byte
3413 earlier. Otherwise the 32 bit get/put bfd operations might
3414 access a byte after the actual section. */
3415 if (r_type
== R_390_PC24DBL
3416 || r_type
== R_390_PLT24DBL
)
3419 if (r_type
== R_390_20
3420 || r_type
== R_390_GOT20
3421 || r_type
== R_390_GOTPLT20
3422 || r_type
== R_390_TLS_GOTIE20
)
3424 relocation
+= rel
->r_addend
;
3425 relocation
= (relocation
&0xfff) << 8 | (relocation
&0xff000) >> 12;
3426 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3427 contents
, rel
->r_offset
,
3431 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3432 contents
, rel
->r_offset
,
3433 relocation
, rel
->r_addend
);
3435 if (r
!= bfd_reloc_ok
)
3440 name
= h
->root
.root
.string
;
3443 name
= bfd_elf_string_from_elf_section (input_bfd
,
3444 symtab_hdr
->sh_link
,
3449 name
= bfd_section_name (input_bfd
, sec
);
3452 if (r
== bfd_reloc_overflow
)
3453 (*info
->callbacks
->reloc_overflow
)
3454 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
3455 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
3459 /* xgettext:c-format */
3460 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3461 input_bfd
, input_section
,
3462 (long) rel
->r_offset
, name
, (int) r
);
3471 /* Generate the PLT slots together with the dynamic relocations needed
3472 for IFUNC symbols. */
3475 elf_s390_finish_ifunc_symbol (bfd
*output_bfd
,
3476 struct bfd_link_info
*info
,
3477 struct elf_link_hash_entry
*h
,
3478 struct elf_s390_link_hash_table
*htab
,
3479 bfd_vma iplt_offset
,
3480 bfd_vma resolver_address
)
3484 bfd_vma igotiplt_offset
;
3485 Elf_Internal_Rela rela
;
3487 asection
*plt
, *gotplt
, *relplt
;
3488 bfd_vma relative_offset
;
3490 if (htab
->elf
.iplt
== NULL
3491 || htab
->elf
.igotplt
== NULL
3492 || htab
->elf
.irelplt
== NULL
)
3495 gotplt
= htab
->elf
.igotplt
;
3496 relplt
= htab
->elf
.irelplt
;
3498 /* Index of the PLT slot within iplt section. */
3499 iplt_index
= iplt_offset
/ PLT_ENTRY_SIZE
;
3500 plt
= htab
->elf
.iplt
;
3501 /* Offset into the igot.plt section. */
3502 igotiplt_offset
= iplt_index
* GOT_ENTRY_SIZE
;
3503 /* Offset into the got section. */
3504 got_offset
= igotiplt_offset
+ gotplt
->output_offset
;
3506 /* S390 uses halfwords for relative branch calc! */
3507 relative_offset
= - (plt
->output_offset
+
3508 (PLT_ENTRY_SIZE
* iplt_index
) + 18) / 2;
3509 /* If offset is > 32768, branch to a previous branch
3510 390 can only handle +-64 K jumps. */
3511 if ( -32768 > (int) relative_offset
)
3513 = -(unsigned) (((65536 / PLT_ENTRY_SIZE
- 1) * PLT_ENTRY_SIZE
) / 2);
3515 /* Fill in the entry in the procedure linkage table. */
3516 if (!bfd_link_pic (info
))
3518 memcpy (plt
->contents
+ iplt_offset
, elf_s390_plt_entry
,
3521 /* Adjust jump to the first plt entry. */
3522 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3523 plt
->contents
+ iplt_offset
+ 20);
3525 /* Push the GOT offset field. */
3526 bfd_put_32 (output_bfd
,
3527 (gotplt
->output_section
->vma
3529 plt
->contents
+ iplt_offset
+ 24);
3531 else if (got_offset
< 4096)
3533 /* The GOT offset is small enough to be used directly as
3535 memcpy (plt
->contents
+ iplt_offset
,
3536 elf_s390_plt_pic12_entry
,
3539 /* Put in the GOT offset as displacement value. The 0xc000
3540 value comes from the first word of the plt entry. Look
3541 at the elf_s390_plt_pic16_entry content. */
3542 bfd_put_16 (output_bfd
, (bfd_vma
)0xc000 | got_offset
,
3543 plt
->contents
+ iplt_offset
+ 2);
3545 /* Adjust the jump to the first plt entry. */
3546 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3547 plt
->contents
+ iplt_offset
+ 20);
3549 else if (got_offset
< 32768)
3551 /* The GOT offset is too big for a displacement but small
3552 enough to be a signed 16 bit immediate value as it can be
3553 used in an lhi instruction. */
3554 memcpy (plt
->contents
+ iplt_offset
,
3555 elf_s390_plt_pic16_entry
,
3558 /* Put in the GOT offset for the lhi instruction. */
3559 bfd_put_16 (output_bfd
, (bfd_vma
)got_offset
,
3560 plt
->contents
+ iplt_offset
+ 2);
3562 /* Adjust the jump to the first plt entry. */
3563 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3564 plt
->contents
+ iplt_offset
+ 20);
3568 memcpy (plt
->contents
+ iplt_offset
,
3569 elf_s390_plt_pic_entry
,
3572 /* Adjust the jump to the first plt entry. */
3573 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3574 plt
->contents
+ iplt_offset
+ 20);
3576 /* Push the GOT offset field. */
3577 bfd_put_32 (output_bfd
, got_offset
,
3578 plt
->contents
+ iplt_offset
+ 24);
3580 /* Insert offset into reloc. table here. */
3581 bfd_put_32 (output_bfd
, relplt
->output_offset
+
3582 iplt_index
* RELA_ENTRY_SIZE
,
3583 plt
->contents
+ iplt_offset
+ 28);
3585 /* Fill in the entry in the global offset table.
3586 Points to instruction after GOT offset. */
3587 bfd_put_32 (output_bfd
,
3588 (plt
->output_section
->vma
3589 + plt
->output_offset
3592 gotplt
->contents
+ igotiplt_offset
);
3594 /* Fill in the entry in the .rela.plt section. */
3595 rela
.r_offset
= gotplt
->output_section
->vma
+ got_offset
;
3599 || ((bfd_link_executable (info
)
3600 || ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
3603 /* The symbol can be locally resolved. */
3604 rela
.r_info
= ELF32_R_INFO (0, R_390_IRELATIVE
);
3605 rela
.r_addend
= resolver_address
;
3609 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_JMP_SLOT
);
3613 loc
= relplt
->contents
+ iplt_index
* RELA_ENTRY_SIZE
;
3614 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3617 /* Finish up dynamic symbol handling. We set the contents of various
3618 dynamic sections here. */
3621 elf_s390_finish_dynamic_symbol (bfd
*output_bfd
,
3622 struct bfd_link_info
*info
,
3623 struct elf_link_hash_entry
*h
,
3624 Elf_Internal_Sym
*sym
)
3626 struct elf_s390_link_hash_table
*htab
;
3627 struct elf_s390_link_hash_entry
*eh
= (struct elf_s390_link_hash_entry
*)h
;
3629 htab
= elf_s390_hash_table (info
);
3631 if (h
->plt
.offset
!= (bfd_vma
) -1)
3635 Elf_Internal_Rela rela
;
3637 bfd_vma relative_offset
;
3639 /* This symbol has an entry in the procedure linkage table. Set
3641 if (s390_is_ifunc_symbol_p (h
) && h
->def_regular
)
3643 elf_s390_finish_ifunc_symbol (output_bfd
, info
, h
,
3644 htab
, h
->plt
.offset
,
3645 eh
->ifunc_resolver_address
+
3646 eh
->ifunc_resolver_section
->output_offset
+
3647 eh
->ifunc_resolver_section
->output_section
->vma
);
3648 /* Do not return yet. Handling of explicit GOT slots of
3649 IFUNC symbols is below. */
3653 if (h
->dynindx
== -1
3654 || htab
->elf
.splt
== NULL
3655 || htab
->elf
.sgotplt
== NULL
3656 || htab
->elf
.srelplt
== NULL
)
3660 Current offset - size first entry / entry size. */
3661 plt_index
= (h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
) / PLT_ENTRY_SIZE
;
3663 /* Offset in GOT is PLT index plus GOT headers(3) times 4,
3665 got_offset
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
3667 /* S390 uses halfwords for relative branch calc! */
3668 relative_offset
= - ((PLT_FIRST_ENTRY_SIZE
+
3669 (PLT_ENTRY_SIZE
* plt_index
) + 18) / 2);
3670 /* If offset is > 32768, branch to a previous branch
3671 390 can only handle +-64 K jumps. */
3672 if ( -32768 > (int) relative_offset
)
3674 = -(unsigned) (((65536 / PLT_ENTRY_SIZE
- 1) * PLT_ENTRY_SIZE
) / 2);
3676 /* Fill in the entry in the procedure linkage table. */
3677 if (!bfd_link_pic (info
))
3679 memcpy (htab
->elf
.splt
->contents
+ h
->plt
.offset
, elf_s390_plt_entry
,
3682 /* Adjust jump to the first plt entry. */
3683 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3684 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 20);
3686 /* Push the GOT offset field. */
3687 bfd_put_32 (output_bfd
,
3688 (htab
->elf
.sgotplt
->output_section
->vma
3689 + htab
->elf
.sgotplt
->output_offset
3691 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 24);
3693 else if (got_offset
< 4096)
3695 /* The GOT offset is small enough to be used directly as
3697 memcpy (htab
->elf
.splt
->contents
+ h
->plt
.offset
,
3698 elf_s390_plt_pic12_entry
,
3701 /* Put in the GOT offset as displacement value. The 0xc000
3702 value comes from the first word of the plt entry. Look
3703 at the elf_s390_plt_pic12_entry content. */
3704 bfd_put_16 (output_bfd
, (bfd_vma
)0xc000 | got_offset
,
3705 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 2);
3707 /* Adjust the jump to the first plt entry. */
3708 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3709 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 20);
3711 else if (got_offset
< 32768)
3713 /* The GOT offset is too big for a displacement but small
3714 enough to be a signed 16 bit immediate value as it can be
3715 used in an lhi instruction. */
3716 memcpy (htab
->elf
.splt
->contents
+ h
->plt
.offset
,
3717 elf_s390_plt_pic16_entry
,
3720 /* Put in the GOT offset for the lhi instruction. */
3721 bfd_put_16 (output_bfd
, (bfd_vma
)got_offset
,
3722 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 2);
3724 /* Adjust the jump to the first plt entry. */
3725 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3726 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 20);
3730 memcpy (htab
->elf
.splt
->contents
+ h
->plt
.offset
,
3731 elf_s390_plt_pic_entry
,
3734 /* Adjust the jump to the first plt entry. */
3735 bfd_put_32 (output_bfd
, (bfd_vma
) 0+(relative_offset
<< 16),
3736 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 20);
3738 /* Push the GOT offset field. */
3739 bfd_put_32 (output_bfd
, got_offset
,
3740 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 24);
3742 /* Insert offset into reloc. table here. */
3743 bfd_put_32 (output_bfd
, plt_index
* sizeof (Elf32_External_Rela
),
3744 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 28);
3746 /* Fill in the entry in the global offset table.
3747 Points to instruction after GOT offset. */
3748 bfd_put_32 (output_bfd
,
3749 (htab
->elf
.splt
->output_section
->vma
3750 + htab
->elf
.splt
->output_offset
3753 htab
->elf
.sgotplt
->contents
+ got_offset
);
3755 /* Fill in the entry in the .rela.plt section. */
3756 rela
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
3757 + htab
->elf
.sgotplt
->output_offset
3759 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_JMP_SLOT
);
3761 loc
= htab
->elf
.srelplt
->contents
+ plt_index
* sizeof (Elf32_External_Rela
);
3762 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3764 if (!h
->def_regular
)
3766 /* Mark the symbol as undefined, rather than as defined in
3767 the .plt section. Leave the value alone. This is a clue
3768 for the dynamic linker, to make function pointer
3769 comparisons work between an application and shared
3771 sym
->st_shndx
= SHN_UNDEF
;
3776 if (h
->got
.offset
!= (bfd_vma
) -1
3777 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_GD
3778 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_IE
3779 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_IE_NLT
)
3781 Elf_Internal_Rela rela
;
3784 /* This symbol has an entry in the global offset table. Set it
3787 if (htab
->elf
.sgot
== NULL
|| htab
->elf
.srelgot
== NULL
)
3790 rela
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
3791 + htab
->elf
.sgot
->output_offset
3792 + (h
->got
.offset
&~ (bfd_vma
) 1));
3794 /* If this is a static link, or it is a -Bsymbolic link and the
3795 symbol is defined locally or was forced to be local because
3796 of a version file, we just want to emit a RELATIVE reloc.
3797 The entry in the global offset table will already have been
3798 initialized in the relocate_section function. */
3799 if (h
->def_regular
&& s390_is_ifunc_symbol_p (h
))
3801 if (bfd_link_pic (info
))
3803 /* An explicit GOT slot usage needs GLOB_DAT. If the
3804 symbol references local the implicit got.iplt slot
3805 will be used and the IRELATIVE reloc has been created
3811 /* For non-shared objects explicit GOT slots must be
3812 filled with the PLT slot address for pointer
3813 equality reasons. */
3814 bfd_put_32 (output_bfd
, (htab
->elf
.iplt
->output_section
->vma
3815 + htab
->elf
.iplt
->output_offset
3817 htab
->elf
.sgot
->contents
+ h
->got
.offset
);
3821 else if (bfd_link_pic (info
)
3822 && SYMBOL_REFERENCES_LOCAL (info
, h
))
3824 /* If this is a static link, or it is a -Bsymbolic link and
3825 the symbol is defined locally or was forced to be local
3826 because of a version file, we just want to emit a
3827 RELATIVE reloc. The entry in the global offset table
3828 will already have been initialized in the
3829 relocate_section function. */
3830 if (!h
->def_regular
)
3832 BFD_ASSERT((h
->got
.offset
& 1) != 0);
3833 rela
.r_info
= ELF32_R_INFO (0, R_390_RELATIVE
);
3834 rela
.r_addend
= (h
->root
.u
.def
.value
3835 + h
->root
.u
.def
.section
->output_section
->vma
3836 + h
->root
.u
.def
.section
->output_offset
);
3840 BFD_ASSERT((h
->got
.offset
& 1) == 0);
3842 bfd_put_32 (output_bfd
, (bfd_vma
) 0, htab
->elf
.sgot
->contents
+ h
->got
.offset
);
3843 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_GLOB_DAT
);
3847 loc
= htab
->elf
.srelgot
->contents
;
3848 loc
+= htab
->elf
.srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3849 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3854 Elf_Internal_Rela rela
;
3857 /* This symbols needs a copy reloc. Set it up. */
3859 if (h
->dynindx
== -1
3860 || (h
->root
.type
!= bfd_link_hash_defined
3861 && h
->root
.type
!= bfd_link_hash_defweak
)
3862 || htab
->srelbss
== NULL
)
3865 rela
.r_offset
= (h
->root
.u
.def
.value
3866 + h
->root
.u
.def
.section
->output_section
->vma
3867 + h
->root
.u
.def
.section
->output_offset
);
3868 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_390_COPY
);
3870 loc
= htab
->srelbss
->contents
;
3871 loc
+= htab
->srelbss
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3872 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3875 /* Mark some specially defined symbols as absolute. */
3876 if (h
== htab
->elf
.hdynamic
3877 || h
== htab
->elf
.hgot
3878 || h
== htab
->elf
.hplt
)
3879 sym
->st_shndx
= SHN_ABS
;
3884 /* Used to decide how to sort relocs in an optimal manner for the
3885 dynamic linker, before writing them out. */
3887 static enum elf_reloc_type_class
3888 elf_s390_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3889 const asection
*rel_sec ATTRIBUTE_UNUSED
,
3890 const Elf_Internal_Rela
*rela
)
3892 bfd
*abfd
= info
->output_bfd
;
3893 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3894 struct elf_s390_link_hash_table
*htab
= elf_s390_hash_table (info
);
3895 unsigned long r_symndx
= ELF32_R_SYM (rela
->r_info
);
3896 Elf_Internal_Sym sym
;
3898 if (htab
->elf
.dynsym
== NULL
3899 || !bed
->s
->swap_symbol_in (abfd
,
3900 (htab
->elf
.dynsym
->contents
3901 + r_symndx
* bed
->s
->sizeof_sym
),
3905 /* Check relocation against STT_GNU_IFUNC symbol. */
3906 if (ELF_ST_TYPE (sym
.st_info
) == STT_GNU_IFUNC
)
3907 return reloc_class_ifunc
;
3909 switch ((int) ELF32_R_TYPE (rela
->r_info
))
3911 case R_390_RELATIVE
:
3912 return reloc_class_relative
;
3913 case R_390_JMP_SLOT
:
3914 return reloc_class_plt
;
3916 return reloc_class_copy
;
3918 return reloc_class_normal
;
3922 /* Finish up the dynamic sections. */
3925 elf_s390_finish_dynamic_sections (bfd
*output_bfd
,
3926 struct bfd_link_info
*info
)
3928 struct elf_s390_link_hash_table
*htab
;
3934 htab
= elf_s390_hash_table (info
);
3935 dynobj
= htab
->elf
.dynobj
;
3936 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
3938 if (htab
->elf
.dynamic_sections_created
)
3940 Elf32_External_Dyn
*dyncon
, *dynconend
;
3942 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
3945 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3946 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3947 for (; dyncon
< dynconend
; dyncon
++)
3949 Elf_Internal_Dyn dyn
;
3952 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3960 s
= htab
->elf
.sgotplt
;
3961 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3965 s
= htab
->elf
.srelplt
;
3966 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3970 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
+ htab
->elf
.irelplt
->size
;
3974 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3977 /* Fill in the special first entry in the procedure linkage table. */
3978 if (htab
->elf
.splt
&& htab
->elf
.splt
->size
> 0)
3980 memset (htab
->elf
.splt
->contents
, 0, PLT_FIRST_ENTRY_SIZE
);
3981 if (bfd_link_pic (info
))
3983 memcpy (htab
->elf
.splt
->contents
, elf_s390_plt_pic_first_entry
,
3984 PLT_FIRST_ENTRY_SIZE
);
3988 memcpy (htab
->elf
.splt
->contents
, elf_s390_plt_first_entry
,
3989 PLT_FIRST_ENTRY_SIZE
);
3990 bfd_put_32 (output_bfd
,
3991 htab
->elf
.sgotplt
->output_section
->vma
3992 + htab
->elf
.sgotplt
->output_offset
,
3993 htab
->elf
.splt
->contents
+ 24);
3995 elf_section_data (htab
->elf
.splt
->output_section
)
3996 ->this_hdr
.sh_entsize
= 4;
4001 if (htab
->elf
.sgotplt
)
4003 /* Fill in the first three entries in the global offset table. */
4004 if (htab
->elf
.sgotplt
->size
> 0)
4006 bfd_put_32 (output_bfd
,
4007 (sdyn
== NULL
? (bfd_vma
) 0
4008 : sdyn
->output_section
->vma
+ sdyn
->output_offset
),
4009 htab
->elf
.sgotplt
->contents
);
4010 /* One entry for shared object struct ptr. */
4011 bfd_put_32 (output_bfd
, (bfd_vma
) 0, htab
->elf
.sgotplt
->contents
+ 4);
4012 /* One entry for _dl_runtime_resolve. */
4013 bfd_put_32 (output_bfd
, (bfd_vma
) 0, htab
->elf
.sgotplt
->contents
+ 8);
4016 elf_section_data (htab
->elf
.sgotplt
->output_section
)
4017 ->this_hdr
.sh_entsize
= 4;
4019 /* Finish dynamic symbol for local IFUNC symbols. */
4020 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
4022 struct plt_entry
*local_plt
;
4023 Elf_Internal_Sym
*isym
;
4024 Elf_Internal_Shdr
*symtab_hdr
;
4026 symtab_hdr
= &elf_symtab_hdr (ibfd
);
4028 local_plt
= elf_s390_local_plt (ibfd
);
4029 if (local_plt
!= NULL
)
4030 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
4032 if (local_plt
[i
].plt
.offset
!= (bfd_vma
) -1)
4034 asection
*sec
= local_plt
[i
].sec
;
4035 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
, ibfd
, i
);
4039 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4040 elf_s390_finish_ifunc_symbol (output_bfd
, info
, NULL
, htab
,
4041 local_plt
[i
].plt
.offset
,
4043 + sec
->output_section
->vma
4044 + sec
->output_offset
);
4052 /* Support for core dump NOTE sections. */
4055 elf_s390_grok_prstatus (bfd
* abfd
, Elf_Internal_Note
* note
)
4060 switch (note
->descsz
)
4065 case 224: /* S/390 Linux. */
4067 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
4070 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
4078 /* Make a ".reg/999" section. */
4079 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
4080 size
, note
->descpos
+ offset
);
4084 elf_s390_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
4086 switch (note
->descsz
)
4091 case 124: /* sizeof(struct elf_prpsinfo) on s390 */
4092 elf_tdata (abfd
)->core
->pid
4093 = bfd_get_32 (abfd
, note
->descdata
+ 12);
4094 elf_tdata (abfd
)->core
->program
4095 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
4096 elf_tdata (abfd
)->core
->command
4097 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
4101 /* Note that for some reason, a spurious space is tacked
4102 onto the end of the args in some (at least one anyway)
4103 implementations, so strip it off if it exists. */
4106 char *command
= elf_tdata (abfd
)->core
->command
;
4107 int n
= strlen (command
);
4109 if (0 < n
&& command
[n
- 1] == ' ')
4110 command
[n
- 1] = '\0';
4117 elf_s390_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
,
4129 char data
[124] = { 0 };
4130 const char *fname
, *psargs
;
4132 va_start (ap
, note_type
);
4133 fname
= va_arg (ap
, const char *);
4134 psargs
= va_arg (ap
, const char *);
4137 strncpy (data
+ 28, fname
, 16);
4138 strncpy (data
+ 44, psargs
, 80);
4139 return elfcore_write_note (abfd
, buf
, bufsiz
, "CORE", note_type
,
4140 &data
, sizeof (data
));
4145 char data
[224] = { 0 };
4150 va_start (ap
, note_type
);
4151 pid
= va_arg (ap
, long);
4152 cursig
= va_arg (ap
, int);
4153 gregs
= va_arg (ap
, const void *);
4156 bfd_put_16 (abfd
, cursig
, data
+ 12);
4157 bfd_put_32 (abfd
, pid
, data
+ 24);
4158 memcpy (data
+ 72, gregs
, 144);
4159 return elfcore_write_note (abfd
, buf
, bufsiz
, "CORE", note_type
,
4160 &data
, sizeof (data
));
4166 /* Return address for Ith PLT stub in section PLT, for relocation REL
4167 or (bfd_vma) -1 if it should not be included. */
4170 elf_s390_plt_sym_val (bfd_vma i
, const asection
*plt
,
4171 const arelent
*rel ATTRIBUTE_UNUSED
)
4173 return plt
->vma
+ PLT_FIRST_ENTRY_SIZE
+ i
* PLT_ENTRY_SIZE
;
4176 /* Merge backend specific data from an object file to the output
4177 object file when linking. */
4180 elf32_s390_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
4182 bfd
*obfd
= info
->output_bfd
;
4184 if (!is_s390_elf (ibfd
) || !is_s390_elf (obfd
))
4187 if (!elf_s390_merge_obj_attributes (ibfd
, info
))
4190 elf_elfheader (obfd
)->e_flags
|= elf_elfheader (ibfd
)->e_flags
;
4195 #define TARGET_BIG_SYM s390_elf32_vec
4196 #define TARGET_BIG_NAME "elf32-s390"
4197 #define ELF_ARCH bfd_arch_s390
4198 #define ELF_TARGET_ID S390_ELF_DATA
4199 #define ELF_MACHINE_CODE EM_S390
4200 #define ELF_MACHINE_ALT1 EM_S390_OLD
4201 #define ELF_MAXPAGESIZE 0x1000
4203 #define elf_backend_can_gc_sections 1
4204 #define elf_backend_can_refcount 1
4205 #define elf_backend_want_got_plt 1
4206 #define elf_backend_plt_readonly 1
4207 #define elf_backend_want_plt_sym 0
4208 #define elf_backend_got_header_size 12
4209 #define elf_backend_rela_normal 1
4211 #define elf_info_to_howto elf_s390_info_to_howto
4213 #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name
4214 #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create
4215 #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
4216 #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
4218 #define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data
4220 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
4221 #define elf_backend_check_relocs elf_s390_check_relocs
4222 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
4223 #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
4224 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
4225 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
4226 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
4227 #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
4228 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
4229 #define elf_backend_relocate_section elf_s390_relocate_section
4230 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
4231 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4232 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
4233 #define elf_backend_grok_psinfo elf_s390_grok_psinfo
4234 #define elf_backend_write_core_note elf_s390_write_core_note
4235 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
4236 #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
4237 #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
4239 #define bfd_elf32_mkobject elf_s390_mkobject
4240 #define elf_backend_object_p elf_s390_object_p
4242 #include "elf32-target.h"