1 /* IBM S/390-specific support for 64-bit ELF
2 Copyright (C) 2000-2020 Free Software Foundation, Inc.
3 Contributed Martin Schwidefsky (schwidefsky@de.ibm.com).
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
31 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
32 from smaller values. Start with zero, widen, *then* decrement. */
33 #define MINUS_ONE (((bfd_vma)0) - 1)
35 static bfd_reloc_status_type
36 s390_tls_reloc (bfd
*, arelent
*, asymbol
*, void *,
37 asection
*, bfd
*, char **);
38 static bfd_reloc_status_type
39 s390_elf_ldisp_reloc (bfd
*, arelent
*, asymbol
*, void *,
40 asection
*, bfd
*, char **);
42 /* The relocation "howto" table. */
43 static reloc_howto_type elf_howto_table
[] =
45 HOWTO (R_390_NONE
, /* type */
47 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
49 FALSE
, /* pc_relative */
51 complain_overflow_dont
, /* complain_on_overflow */
52 bfd_elf_generic_reloc
, /* special_function */
53 "R_390_NONE", /* name */
54 FALSE
, /* partial_inplace */
57 FALSE
), /* pcrel_offset */
59 HOWTO(R_390_8
, 0, 0, 8, FALSE
, 0, complain_overflow_bitfield
,
60 bfd_elf_generic_reloc
, "R_390_8", FALSE
, 0,0x000000ff, FALSE
),
61 HOWTO(R_390_12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
62 bfd_elf_generic_reloc
, "R_390_12", FALSE
, 0,0x00000fff, FALSE
),
63 HOWTO(R_390_16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
64 bfd_elf_generic_reloc
, "R_390_16", FALSE
, 0,0x0000ffff, FALSE
),
65 HOWTO(R_390_32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
66 bfd_elf_generic_reloc
, "R_390_32", FALSE
, 0,0xffffffff, FALSE
),
67 HOWTO(R_390_PC32
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
68 bfd_elf_generic_reloc
, "R_390_PC32", FALSE
, 0,0xffffffff, TRUE
),
69 HOWTO(R_390_GOT12
, 0, 1, 12, FALSE
, 0, complain_overflow_bitfield
,
70 bfd_elf_generic_reloc
, "R_390_GOT12", FALSE
, 0,0x00000fff, FALSE
),
71 HOWTO(R_390_GOT32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
72 bfd_elf_generic_reloc
, "R_390_GOT32", FALSE
, 0,0xffffffff, FALSE
),
73 HOWTO(R_390_PLT32
, 0, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
74 bfd_elf_generic_reloc
, "R_390_PLT32", FALSE
, 0,0xffffffff, TRUE
),
75 HOWTO(R_390_COPY
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
76 bfd_elf_generic_reloc
, "R_390_COPY", FALSE
, 0,MINUS_ONE
, FALSE
),
77 HOWTO(R_390_GLOB_DAT
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
78 bfd_elf_generic_reloc
, "R_390_GLOB_DAT", FALSE
, 0,MINUS_ONE
, FALSE
),
79 HOWTO(R_390_JMP_SLOT
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
80 bfd_elf_generic_reloc
, "R_390_JMP_SLOT", FALSE
, 0,MINUS_ONE
, FALSE
),
81 HOWTO(R_390_RELATIVE
, 0, 4, 64, TRUE
, 0, complain_overflow_bitfield
,
82 bfd_elf_generic_reloc
, "R_390_RELATIVE", FALSE
, 0,MINUS_ONE
, FALSE
),
83 HOWTO(R_390_GOTOFF32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
84 bfd_elf_generic_reloc
, "R_390_GOTOFF32", FALSE
, 0,MINUS_ONE
, FALSE
),
85 HOWTO(R_390_GOTPC
, 0, 4, 64, TRUE
, 0, complain_overflow_bitfield
,
86 bfd_elf_generic_reloc
, "R_390_GOTPC", FALSE
, 0,MINUS_ONE
, TRUE
),
87 HOWTO(R_390_GOT16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
88 bfd_elf_generic_reloc
, "R_390_GOT16", FALSE
, 0,0x0000ffff, FALSE
),
89 HOWTO(R_390_PC16
, 0, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
90 bfd_elf_generic_reloc
, "R_390_PC16", FALSE
, 0,0x0000ffff, TRUE
),
91 HOWTO(R_390_PC16DBL
, 1, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
92 bfd_elf_generic_reloc
, "R_390_PC16DBL", FALSE
, 0,0x0000ffff, TRUE
),
93 HOWTO(R_390_PLT16DBL
, 1, 1, 16, TRUE
, 0, complain_overflow_bitfield
,
94 bfd_elf_generic_reloc
, "R_390_PLT16DBL", FALSE
, 0,0x0000ffff, TRUE
),
95 HOWTO(R_390_PC32DBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
96 bfd_elf_generic_reloc
, "R_390_PC32DBL", FALSE
, 0,0xffffffff, TRUE
),
97 HOWTO(R_390_PLT32DBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
98 bfd_elf_generic_reloc
, "R_390_PLT32DBL", FALSE
, 0,0xffffffff, TRUE
),
99 HOWTO(R_390_GOTPCDBL
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
100 bfd_elf_generic_reloc
, "R_390_GOTPCDBL", FALSE
, 0,MINUS_ONE
, TRUE
),
101 HOWTO(R_390_64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
102 bfd_elf_generic_reloc
, "R_390_64", FALSE
, 0,MINUS_ONE
, FALSE
),
103 HOWTO(R_390_PC64
, 0, 4, 64, TRUE
, 0, complain_overflow_bitfield
,
104 bfd_elf_generic_reloc
, "R_390_PC64", FALSE
, 0,MINUS_ONE
, TRUE
),
105 HOWTO(R_390_GOT64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
106 bfd_elf_generic_reloc
, "R_390_GOT64", FALSE
, 0,MINUS_ONE
, FALSE
),
107 HOWTO(R_390_PLT64
, 0, 4, 64, TRUE
, 0, complain_overflow_bitfield
,
108 bfd_elf_generic_reloc
, "R_390_PLT64", FALSE
, 0,MINUS_ONE
, TRUE
),
109 HOWTO(R_390_GOTENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
110 bfd_elf_generic_reloc
, "R_390_GOTENT", FALSE
, 0,MINUS_ONE
, TRUE
),
111 HOWTO(R_390_GOTOFF16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
112 bfd_elf_generic_reloc
, "R_390_GOTOFF16", FALSE
, 0,0x0000ffff, FALSE
),
113 HOWTO(R_390_GOTOFF64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
114 bfd_elf_generic_reloc
, "R_390_GOTOFF64", FALSE
, 0,MINUS_ONE
, FALSE
),
115 HOWTO(R_390_GOTPLT12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
116 bfd_elf_generic_reloc
, "R_390_GOTPLT12", FALSE
, 0,0x00000fff, FALSE
),
117 HOWTO(R_390_GOTPLT16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
118 bfd_elf_generic_reloc
, "R_390_GOTPLT16", FALSE
, 0,0x0000ffff, FALSE
),
119 HOWTO(R_390_GOTPLT32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
120 bfd_elf_generic_reloc
, "R_390_GOTPLT32", FALSE
, 0,0xffffffff, FALSE
),
121 HOWTO(R_390_GOTPLT64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
122 bfd_elf_generic_reloc
, "R_390_GOTPLT64", FALSE
, 0,MINUS_ONE
, FALSE
),
123 HOWTO(R_390_GOTPLTENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
124 bfd_elf_generic_reloc
, "R_390_GOTPLTENT",FALSE
, 0,MINUS_ONE
, TRUE
),
125 HOWTO(R_390_PLTOFF16
, 0, 1, 16, FALSE
, 0, complain_overflow_bitfield
,
126 bfd_elf_generic_reloc
, "R_390_PLTOFF16", FALSE
, 0,0x0000ffff, FALSE
),
127 HOWTO(R_390_PLTOFF32
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
128 bfd_elf_generic_reloc
, "R_390_PLTOFF32", FALSE
, 0,0xffffffff, FALSE
),
129 HOWTO(R_390_PLTOFF64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
130 bfd_elf_generic_reloc
, "R_390_PLTOFF64", FALSE
, 0,MINUS_ONE
, FALSE
),
131 HOWTO(R_390_TLS_LOAD
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
132 s390_tls_reloc
, "R_390_TLS_LOAD", FALSE
, 0, 0, FALSE
),
133 HOWTO(R_390_TLS_GDCALL
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
134 s390_tls_reloc
, "R_390_TLS_GDCALL", FALSE
, 0, 0, FALSE
),
135 HOWTO(R_390_TLS_LDCALL
, 0, 0, 0, FALSE
, 0, complain_overflow_dont
,
136 s390_tls_reloc
, "R_390_TLS_LDCALL", FALSE
, 0, 0, FALSE
),
137 EMPTY_HOWTO (R_390_TLS_GD32
), /* Empty entry for R_390_TLS_GD32. */
138 HOWTO(R_390_TLS_GD64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
139 bfd_elf_generic_reloc
, "R_390_TLS_GD64", FALSE
, 0, MINUS_ONE
, FALSE
),
140 HOWTO(R_390_TLS_GOTIE12
, 0, 1, 12, FALSE
, 0, complain_overflow_dont
,
141 bfd_elf_generic_reloc
, "R_390_TLS_GOTIE12", FALSE
, 0, 0x00000fff, FALSE
),
142 EMPTY_HOWTO (R_390_TLS_GOTIE32
), /* Empty entry for R_390_TLS_GOTIE32. */
143 HOWTO(R_390_TLS_GOTIE64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
144 bfd_elf_generic_reloc
, "R_390_TLS_GOTIE64", FALSE
, 0, MINUS_ONE
, FALSE
),
145 EMPTY_HOWTO (R_390_TLS_LDM32
), /* Empty entry for R_390_TLS_LDM32. */
146 HOWTO(R_390_TLS_LDM64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
147 bfd_elf_generic_reloc
, "R_390_TLS_LDM64", FALSE
, 0, MINUS_ONE
, FALSE
),
148 EMPTY_HOWTO (R_390_TLS_IE32
), /* Empty entry for R_390_TLS_IE32. */
149 HOWTO(R_390_TLS_IE64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
150 bfd_elf_generic_reloc
, "R_390_TLS_IE64", FALSE
, 0, MINUS_ONE
, FALSE
),
151 HOWTO(R_390_TLS_IEENT
, 1, 2, 32, TRUE
, 0, complain_overflow_bitfield
,
152 bfd_elf_generic_reloc
, "R_390_TLS_IEENT", FALSE
, 0, MINUS_ONE
, TRUE
),
153 EMPTY_HOWTO (R_390_TLS_LE32
), /* Empty entry for R_390_TLS_LE32. */
154 HOWTO(R_390_TLS_LE64
, 0, 2, 32, FALSE
, 0, complain_overflow_bitfield
,
155 bfd_elf_generic_reloc
, "R_390_TLS_LE64", FALSE
, 0, MINUS_ONE
, FALSE
),
156 EMPTY_HOWTO (R_390_TLS_LDO32
), /* Empty entry for R_390_TLS_LDO32. */
157 HOWTO(R_390_TLS_LDO64
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
158 bfd_elf_generic_reloc
, "R_390_TLS_LDO64", FALSE
, 0, MINUS_ONE
, FALSE
),
159 HOWTO(R_390_TLS_DTPMOD
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
160 bfd_elf_generic_reloc
, "R_390_TLS_DTPMOD", FALSE
, 0, MINUS_ONE
, FALSE
),
161 HOWTO(R_390_TLS_DTPOFF
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
162 bfd_elf_generic_reloc
, "R_390_TLS_DTPOFF", FALSE
, 0, MINUS_ONE
, FALSE
),
163 HOWTO(R_390_TLS_TPOFF
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
164 bfd_elf_generic_reloc
, "R_390_TLS_TPOFF", FALSE
, 0, MINUS_ONE
, FALSE
),
165 HOWTO(R_390_20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
166 s390_elf_ldisp_reloc
, "R_390_20", FALSE
, 0,0x0fffff00, FALSE
),
167 HOWTO(R_390_GOT20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
168 s390_elf_ldisp_reloc
, "R_390_GOT20", FALSE
, 0,0x0fffff00, FALSE
),
169 HOWTO(R_390_GOTPLT20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
170 s390_elf_ldisp_reloc
, "R_390_GOTPLT20", FALSE
, 0,0x0fffff00, FALSE
),
171 HOWTO(R_390_TLS_GOTIE20
, 0, 2, 20, FALSE
, 8, complain_overflow_dont
,
172 s390_elf_ldisp_reloc
, "R_390_TLS_GOTIE20", FALSE
, 0,0x0fffff00, FALSE
),
173 HOWTO(R_390_IRELATIVE
, 0, 4, 64, FALSE
, 0, complain_overflow_bitfield
,
174 bfd_elf_generic_reloc
, "R_390_IRELATIVE", FALSE
, 0, MINUS_ONE
, FALSE
),
175 HOWTO(R_390_PC12DBL
, 1, 1, 12, TRUE
, 0, complain_overflow_bitfield
,
176 bfd_elf_generic_reloc
, "R_390_PC12DBL", FALSE
, 0,0x00000fff, TRUE
),
177 HOWTO(R_390_PLT12DBL
, 1, 1, 12, TRUE
, 0, complain_overflow_bitfield
,
178 bfd_elf_generic_reloc
, "R_390_PLT12DBL", FALSE
, 0,0x00000fff, TRUE
),
179 HOWTO(R_390_PC24DBL
, 1, 2, 24, TRUE
, 0, complain_overflow_bitfield
,
180 bfd_elf_generic_reloc
, "R_390_PC24DBL", FALSE
, 0,0x00ffffff, TRUE
),
181 HOWTO(R_390_PLT24DBL
, 1, 2, 24, TRUE
, 0, complain_overflow_bitfield
,
182 bfd_elf_generic_reloc
, "R_390_PLT24DBL", FALSE
, 0,0x00ffffff, TRUE
),
185 /* GNU extension to record C++ vtable hierarchy. */
186 static reloc_howto_type elf64_s390_vtinherit_howto
=
187 HOWTO (R_390_GNU_VTINHERIT
, 0,4,0,FALSE
,0,complain_overflow_dont
, NULL
, "R_390_GNU_VTINHERIT", FALSE
,0, 0, FALSE
);
188 static reloc_howto_type elf64_s390_vtentry_howto
=
189 HOWTO (R_390_GNU_VTENTRY
, 0,4,0,FALSE
,0,complain_overflow_dont
, _bfd_elf_rel_vtable_reloc_fn
,"R_390_GNU_VTENTRY", FALSE
,0,0, FALSE
);
191 static reloc_howto_type
*
192 elf_s390_reloc_type_lookup (bfd
*abfd
,
193 bfd_reloc_code_real_type code
)
198 return &elf_howto_table
[(int) R_390_NONE
];
200 return &elf_howto_table
[(int) R_390_8
];
201 case BFD_RELOC_390_12
:
202 return &elf_howto_table
[(int) R_390_12
];
204 return &elf_howto_table
[(int) R_390_16
];
206 return &elf_howto_table
[(int) R_390_32
];
208 return &elf_howto_table
[(int) R_390_32
];
209 case BFD_RELOC_32_PCREL
:
210 return &elf_howto_table
[(int) R_390_PC32
];
211 case BFD_RELOC_390_GOT12
:
212 return &elf_howto_table
[(int) R_390_GOT12
];
213 case BFD_RELOC_32_GOT_PCREL
:
214 return &elf_howto_table
[(int) R_390_GOT32
];
215 case BFD_RELOC_390_PLT32
:
216 return &elf_howto_table
[(int) R_390_PLT32
];
217 case BFD_RELOC_390_COPY
:
218 return &elf_howto_table
[(int) R_390_COPY
];
219 case BFD_RELOC_390_GLOB_DAT
:
220 return &elf_howto_table
[(int) R_390_GLOB_DAT
];
221 case BFD_RELOC_390_JMP_SLOT
:
222 return &elf_howto_table
[(int) R_390_JMP_SLOT
];
223 case BFD_RELOC_390_RELATIVE
:
224 return &elf_howto_table
[(int) R_390_RELATIVE
];
225 case BFD_RELOC_32_GOTOFF
:
226 return &elf_howto_table
[(int) R_390_GOTOFF32
];
227 case BFD_RELOC_390_GOTPC
:
228 return &elf_howto_table
[(int) R_390_GOTPC
];
229 case BFD_RELOC_390_GOT16
:
230 return &elf_howto_table
[(int) R_390_GOT16
];
231 case BFD_RELOC_16_PCREL
:
232 return &elf_howto_table
[(int) R_390_PC16
];
233 case BFD_RELOC_390_PC12DBL
:
234 return &elf_howto_table
[(int) R_390_PC12DBL
];
235 case BFD_RELOC_390_PLT12DBL
:
236 return &elf_howto_table
[(int) R_390_PLT12DBL
];
237 case BFD_RELOC_390_PC16DBL
:
238 return &elf_howto_table
[(int) R_390_PC16DBL
];
239 case BFD_RELOC_390_PLT16DBL
:
240 return &elf_howto_table
[(int) R_390_PLT16DBL
];
241 case BFD_RELOC_390_PC24DBL
:
242 return &elf_howto_table
[(int) R_390_PC24DBL
];
243 case BFD_RELOC_390_PLT24DBL
:
244 return &elf_howto_table
[(int) R_390_PLT24DBL
];
245 case BFD_RELOC_390_PC32DBL
:
246 return &elf_howto_table
[(int) R_390_PC32DBL
];
247 case BFD_RELOC_390_PLT32DBL
:
248 return &elf_howto_table
[(int) R_390_PLT32DBL
];
249 case BFD_RELOC_390_GOTPCDBL
:
250 return &elf_howto_table
[(int) R_390_GOTPCDBL
];
252 return &elf_howto_table
[(int) R_390_64
];
253 case BFD_RELOC_64_PCREL
:
254 return &elf_howto_table
[(int) R_390_PC64
];
255 case BFD_RELOC_390_GOT64
:
256 return &elf_howto_table
[(int) R_390_GOT64
];
257 case BFD_RELOC_390_PLT64
:
258 return &elf_howto_table
[(int) R_390_PLT64
];
259 case BFD_RELOC_390_GOTENT
:
260 return &elf_howto_table
[(int) R_390_GOTENT
];
261 case BFD_RELOC_16_GOTOFF
:
262 return &elf_howto_table
[(int) R_390_GOTOFF16
];
263 case BFD_RELOC_390_GOTOFF64
:
264 return &elf_howto_table
[(int) R_390_GOTOFF64
];
265 case BFD_RELOC_390_GOTPLT12
:
266 return &elf_howto_table
[(int) R_390_GOTPLT12
];
267 case BFD_RELOC_390_GOTPLT16
:
268 return &elf_howto_table
[(int) R_390_GOTPLT16
];
269 case BFD_RELOC_390_GOTPLT32
:
270 return &elf_howto_table
[(int) R_390_GOTPLT32
];
271 case BFD_RELOC_390_GOTPLT64
:
272 return &elf_howto_table
[(int) R_390_GOTPLT64
];
273 case BFD_RELOC_390_GOTPLTENT
:
274 return &elf_howto_table
[(int) R_390_GOTPLTENT
];
275 case BFD_RELOC_390_PLTOFF16
:
276 return &elf_howto_table
[(int) R_390_PLTOFF16
];
277 case BFD_RELOC_390_PLTOFF32
:
278 return &elf_howto_table
[(int) R_390_PLTOFF32
];
279 case BFD_RELOC_390_PLTOFF64
:
280 return &elf_howto_table
[(int) R_390_PLTOFF64
];
281 case BFD_RELOC_390_TLS_LOAD
:
282 return &elf_howto_table
[(int) R_390_TLS_LOAD
];
283 case BFD_RELOC_390_TLS_GDCALL
:
284 return &elf_howto_table
[(int) R_390_TLS_GDCALL
];
285 case BFD_RELOC_390_TLS_LDCALL
:
286 return &elf_howto_table
[(int) R_390_TLS_LDCALL
];
287 case BFD_RELOC_390_TLS_GD64
:
288 return &elf_howto_table
[(int) R_390_TLS_GD64
];
289 case BFD_RELOC_390_TLS_GOTIE12
:
290 return &elf_howto_table
[(int) R_390_TLS_GOTIE12
];
291 case BFD_RELOC_390_TLS_GOTIE64
:
292 return &elf_howto_table
[(int) R_390_TLS_GOTIE64
];
293 case BFD_RELOC_390_TLS_LDM64
:
294 return &elf_howto_table
[(int) R_390_TLS_LDM64
];
295 case BFD_RELOC_390_TLS_IE64
:
296 return &elf_howto_table
[(int) R_390_TLS_IE64
];
297 case BFD_RELOC_390_TLS_IEENT
:
298 return &elf_howto_table
[(int) R_390_TLS_IEENT
];
299 case BFD_RELOC_390_TLS_LE64
:
300 return &elf_howto_table
[(int) R_390_TLS_LE64
];
301 case BFD_RELOC_390_TLS_LDO64
:
302 return &elf_howto_table
[(int) R_390_TLS_LDO64
];
303 case BFD_RELOC_390_TLS_DTPMOD
:
304 return &elf_howto_table
[(int) R_390_TLS_DTPMOD
];
305 case BFD_RELOC_390_TLS_DTPOFF
:
306 return &elf_howto_table
[(int) R_390_TLS_DTPOFF
];
307 case BFD_RELOC_390_TLS_TPOFF
:
308 return &elf_howto_table
[(int) R_390_TLS_TPOFF
];
309 case BFD_RELOC_390_20
:
310 return &elf_howto_table
[(int) R_390_20
];
311 case BFD_RELOC_390_GOT20
:
312 return &elf_howto_table
[(int) R_390_GOT20
];
313 case BFD_RELOC_390_GOTPLT20
:
314 return &elf_howto_table
[(int) R_390_GOTPLT20
];
315 case BFD_RELOC_390_TLS_GOTIE20
:
316 return &elf_howto_table
[(int) R_390_TLS_GOTIE20
];
317 case BFD_RELOC_390_IRELATIVE
:
318 return &elf_howto_table
[(int) R_390_IRELATIVE
];
319 case BFD_RELOC_VTABLE_INHERIT
:
320 return &elf64_s390_vtinherit_howto
;
321 case BFD_RELOC_VTABLE_ENTRY
:
322 return &elf64_s390_vtentry_howto
;
327 /* xgettext:c-format */
328 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd
, (int) code
);
329 bfd_set_error (bfd_error_bad_value
);
333 static reloc_howto_type
*
334 elf_s390_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
340 i
< sizeof (elf_howto_table
) / sizeof (elf_howto_table
[0]);
342 if (elf_howto_table
[i
].name
!= NULL
343 && strcasecmp (elf_howto_table
[i
].name
, r_name
) == 0)
344 return &elf_howto_table
[i
];
346 if (strcasecmp (elf64_s390_vtinherit_howto
.name
, r_name
) == 0)
347 return &elf64_s390_vtinherit_howto
;
348 if (strcasecmp (elf64_s390_vtentry_howto
.name
, r_name
) == 0)
349 return &elf64_s390_vtentry_howto
;
354 /* We need to use ELF64_R_TYPE so we have our own copy of this function,
355 and elf64-s390.c has its own copy. */
358 elf_s390_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
360 Elf_Internal_Rela
*dst
)
362 unsigned int r_type
= ELF64_R_TYPE(dst
->r_info
);
366 case R_390_GNU_VTINHERIT
:
367 cache_ptr
->howto
= &elf64_s390_vtinherit_howto
;
370 case R_390_GNU_VTENTRY
:
371 cache_ptr
->howto
= &elf64_s390_vtentry_howto
;
375 if (r_type
>= sizeof (elf_howto_table
) / sizeof (elf_howto_table
[0]))
377 /* xgettext:c-format */
378 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
380 bfd_set_error (bfd_error_bad_value
);
383 cache_ptr
->howto
= &elf_howto_table
[r_type
];
388 /* A relocation function which doesn't do anything. */
389 static bfd_reloc_status_type
390 s390_tls_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
391 arelent
*reloc_entry
,
392 asymbol
*symbol ATTRIBUTE_UNUSED
,
393 void * data ATTRIBUTE_UNUSED
,
394 asection
*input_section
,
396 char **error_message ATTRIBUTE_UNUSED
)
399 reloc_entry
->address
+= input_section
->output_offset
;
403 /* Handle the large displacement relocs. */
404 static bfd_reloc_status_type
405 s390_elf_ldisp_reloc (bfd
*abfd
,
406 arelent
*reloc_entry
,
409 asection
*input_section
,
411 char **error_message ATTRIBUTE_UNUSED
)
413 reloc_howto_type
*howto
= reloc_entry
->howto
;
417 if (output_bfd
!= (bfd
*) NULL
418 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
419 && (! howto
->partial_inplace
420 || reloc_entry
->addend
== 0))
422 reloc_entry
->address
+= input_section
->output_offset
;
425 if (output_bfd
!= NULL
)
426 return bfd_reloc_continue
;
428 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
429 return bfd_reloc_outofrange
;
431 relocation
= (symbol
->value
432 + symbol
->section
->output_section
->vma
433 + symbol
->section
->output_offset
);
434 relocation
+= reloc_entry
->addend
;
435 if (howto
->pc_relative
)
437 relocation
-= (input_section
->output_section
->vma
438 + input_section
->output_offset
);
439 relocation
-= reloc_entry
->address
;
442 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ reloc_entry
->address
);
443 insn
|= (relocation
& 0xfff) << 16 | (relocation
& 0xff000) >> 4;
444 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ reloc_entry
->address
);
446 if ((bfd_signed_vma
) relocation
< - 0x80000
447 || (bfd_signed_vma
) relocation
> 0x7ffff)
448 return bfd_reloc_overflow
;
454 elf_s390_is_local_label_name (bfd
*abfd
, const char *name
)
456 if (name
[0] == '.' && (name
[1] == 'X' || name
[1] == 'L'))
459 return _bfd_elf_is_local_label_name (abfd
, name
);
462 /* Functions for the 390 ELF linker. */
464 /* The name of the dynamic interpreter. This is put in the .interp
467 #define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
469 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
470 copying dynamic variables from a shared lib into an app's dynbss
471 section, and instead use a dynamic relocation to point into the
473 #define ELIMINATE_COPY_RELOCS 1
475 /* The size in bytes of the first entry in the procedure linkage table. */
476 #define PLT_FIRST_ENTRY_SIZE 32
477 /* The size in bytes of an entry in the procedure linkage table. */
478 #define PLT_ENTRY_SIZE 32
480 #define GOT_ENTRY_SIZE 8
482 #define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela)
484 /* The first three entries in a global offset table are reserved,
485 and the initial contents are unimportant (we zero them out).
486 Subsequent entries look like this. See the SVR4 ABI 386
487 supplement to see how this works. */
489 /* For the s390, simple addr offset can only be 0 - 4096.
490 To use the full 16777216 TB address space, several instructions
491 are needed to load an address in a register and execute
492 a branch( or just saving the address)
494 Furthermore, only r 0 and 1 are free to use!!! */
496 /* The first 3 words in the GOT are then reserved.
497 Word 0 is the address of the dynamic table.
498 Word 1 is a pointer to a structure describing the object
499 Word 2 is used to point to the loader entry address.
501 The code for PLT entries looks like this:
503 The GOT holds the address in the PLT to be executed.
504 The loader then gets:
505 48(15) = Pointer to the structure describing the object.
506 56(15) = Offset in symbol table
507 The loader must then find the module where the function is
508 and insert the address in the GOT.
510 PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
511 LG 1,0(1) # 6 bytes Load address from GOT in r1
512 BCR 15,1 # 2 bytes Jump to address
513 RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
514 LGF 1,12(1) # 6 bytes Load rela.plt offset into r1
515 BRCL 15,-x # 6 bytes Jump to first PLT entry
516 .long ? # 4 bytes offset into .rela.plt
518 Total = 32 bytes per PLT entry
519 Fixup at offset 2: relative address to GOT entry
520 Fixup at offset 22: relative branch to PLT0
521 Fixup at offset 28: 32 bit offset into .rela.plt
523 A 32 bit offset into the symbol table is enough. It allows for
524 .rela.plt sections up to a size of 2 gigabyte. A single dynamic
525 object (the main program, any shared library) is limited to 4GB in
526 size. Having a .rela.plt of 2GB would already make the .plt
527 section bigger than 8GB. */
529 static const bfd_byte elf_s390x_plt_entry
[PLT_ENTRY_SIZE
] =
531 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
532 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */
533 0x07, 0xf1, /* br %r1 */
534 0x0d, 0x10, /* basr %r1,%r0 */
535 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */
536 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */
537 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */
540 /* The first PLT entry pushes the offset into the symbol table
541 from R1 onto the stack at 56(15) and the loader object info
542 at 48(15), loads the loader address in R1 and jumps to it. */
544 /* The first entry in the PLT:
547 STG 1,56(15) # r1 contains the offset into the symbol table
548 LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
549 MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
550 LG 1,16(1) # get entry address of loader
551 BCR 15,1 # jump to loader
553 Fixup at offset 8: relative address to start of GOT. */
555 static const bfd_byte elf_s390x_first_plt_entry
[PLT_FIRST_ENTRY_SIZE
] =
557 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */
558 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
559 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */
560 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */
561 0x07, 0xf1, /* br %r1 */
562 0x07, 0x00, /* nopr %r0 */
563 0x07, 0x00, /* nopr %r0 */
564 0x07, 0x00 /* nopr %r0 */
568 /* s390 ELF linker hash entry. */
570 struct elf_s390_link_hash_entry
572 struct elf_link_hash_entry elf
;
574 /* Number of GOTPLT references for a function. */
575 bfd_signed_vma gotplt_refcount
;
577 #define GOT_UNKNOWN 0
581 #define GOT_TLS_IE_NLT 3
582 unsigned char tls_type
;
584 /* For pointer equality reasons we might need to change the symbol
585 type from STT_GNU_IFUNC to STT_FUNC together with its value and
586 section entry. So after alloc_dynrelocs only these values should
587 be used. In order to check whether a symbol is IFUNC use
588 s390_is_ifunc_symbol_p. */
589 bfd_vma ifunc_resolver_address
;
590 asection
*ifunc_resolver_section
;
593 #define elf_s390_hash_entry(ent) \
594 ((struct elf_s390_link_hash_entry *)(ent))
596 /* This structure represents an entry in the local PLT list needed for
597 local IFUNC symbols. */
600 /* The section of the local symbol.
601 Set in relocate_section and used in finish_dynamic_sections. */
606 bfd_signed_vma refcount
;
611 /* NOTE: Keep this structure in sync with
612 the one declared in elf32-s390.c. */
613 struct elf_s390_obj_tdata
615 struct elf_obj_tdata root
;
617 /* A local PLT is needed for ifunc symbols. */
618 struct plt_entry
*local_plt
;
620 /* TLS type for each local got entry. */
621 char *local_got_tls_type
;
624 #define elf_s390_tdata(abfd) \
625 ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
627 #define elf_s390_local_plt(abfd) \
628 (elf_s390_tdata (abfd)->local_plt)
630 #define elf_s390_local_got_tls_type(abfd) \
631 (elf_s390_tdata (abfd)->local_got_tls_type)
633 #define is_s390_elf(bfd) \
634 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
635 && elf_tdata (bfd) != NULL \
636 && elf_object_id (bfd) == S390_ELF_DATA)
639 elf_s390_mkobject (bfd
*abfd
)
641 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_s390_obj_tdata
),
646 elf_s390_object_p (bfd
*abfd
)
648 /* Set the right machine number for an s390 elf32 file. */
649 return bfd_default_set_arch_mach (abfd
, bfd_arch_s390
, bfd_mach_s390_64
);
652 /* s390 ELF linker hash table. */
654 struct elf_s390_link_hash_table
656 struct elf_link_hash_table elf
;
658 /* Short-cuts to get to dynamic linker sections. */
662 bfd_signed_vma refcount
;
666 /* Options passed from the linker. */
667 struct s390_elf_params
*params
;
670 /* Get the s390 ELF linker hash table from a link_info structure. */
672 #define elf_s390_hash_table(p) \
673 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
674 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
677 #include "elf-s390-common.c"
679 /* Create an entry in an s390 ELF linker hash table. */
681 static struct bfd_hash_entry
*
682 link_hash_newfunc (struct bfd_hash_entry
*entry
,
683 struct bfd_hash_table
*table
,
686 /* Allocate the structure if it has not already been allocated by a
690 entry
= bfd_hash_allocate (table
,
691 sizeof (struct elf_s390_link_hash_entry
));
696 /* Call the allocation method of the superclass. */
697 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
700 struct elf_s390_link_hash_entry
*eh
;
702 eh
= (struct elf_s390_link_hash_entry
*) entry
;
703 eh
->gotplt_refcount
= 0;
704 eh
->tls_type
= GOT_UNKNOWN
;
705 eh
->ifunc_resolver_address
= 0;
706 eh
->ifunc_resolver_section
= NULL
;
712 /* Create an s390 ELF linker hash table. */
714 static struct bfd_link_hash_table
*
715 elf_s390_link_hash_table_create (bfd
*abfd
)
717 struct elf_s390_link_hash_table
*ret
;
718 size_t amt
= sizeof (struct elf_s390_link_hash_table
);
720 ret
= (struct elf_s390_link_hash_table
*) bfd_zmalloc (amt
);
724 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
, link_hash_newfunc
,
725 sizeof (struct elf_s390_link_hash_entry
),
732 return &ret
->elf
.root
;
735 /* Copy the extra info we tack onto an elf_link_hash_entry. */
738 elf_s390_copy_indirect_symbol (struct bfd_link_info
*info
,
739 struct elf_link_hash_entry
*dir
,
740 struct elf_link_hash_entry
*ind
)
742 struct elf_s390_link_hash_entry
*edir
, *eind
;
744 edir
= (struct elf_s390_link_hash_entry
*) dir
;
745 eind
= (struct elf_s390_link_hash_entry
*) ind
;
747 if (ind
->root
.type
== bfd_link_hash_indirect
748 && dir
->got
.refcount
<= 0)
750 edir
->tls_type
= eind
->tls_type
;
751 eind
->tls_type
= GOT_UNKNOWN
;
754 if (ELIMINATE_COPY_RELOCS
755 && ind
->root
.type
!= bfd_link_hash_indirect
756 && dir
->dynamic_adjusted
)
758 /* If called to transfer flags for a weakdef during processing
759 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
760 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
761 if (dir
->versioned
!= versioned_hidden
)
762 dir
->ref_dynamic
|= ind
->ref_dynamic
;
763 dir
->ref_regular
|= ind
->ref_regular
;
764 dir
->ref_regular_nonweak
|= ind
->ref_regular_nonweak
;
765 dir
->needs_plt
|= ind
->needs_plt
;
768 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
772 elf_s390_tls_transition (struct bfd_link_info
*info
,
776 if (bfd_link_pic (info
))
784 return R_390_TLS_LE64
;
785 return R_390_TLS_IE64
;
786 case R_390_TLS_GOTIE64
:
788 return R_390_TLS_LE64
;
789 return R_390_TLS_GOTIE64
;
790 case R_390_TLS_LDM64
:
791 return R_390_TLS_LE64
;
797 /* Look through the relocs for a section during the first phase, and
798 allocate space in the global offset table or procedure linkage
802 elf_s390_check_relocs (bfd
*abfd
,
803 struct bfd_link_info
*info
,
805 const Elf_Internal_Rela
*relocs
)
807 struct elf_s390_link_hash_table
*htab
;
808 Elf_Internal_Shdr
*symtab_hdr
;
809 struct elf_link_hash_entry
**sym_hashes
;
810 const Elf_Internal_Rela
*rel
;
811 const Elf_Internal_Rela
*rel_end
;
813 bfd_signed_vma
*local_got_refcounts
;
814 int tls_type
, old_tls_type
;
816 if (bfd_link_relocatable (info
))
819 BFD_ASSERT (is_s390_elf (abfd
));
821 htab
= elf_s390_hash_table (info
);
825 symtab_hdr
= &elf_symtab_hdr (abfd
);
826 sym_hashes
= elf_sym_hashes (abfd
);
827 local_got_refcounts
= elf_local_got_refcounts (abfd
);
831 rel_end
= relocs
+ sec
->reloc_count
;
832 for (rel
= relocs
; rel
< rel_end
; rel
++)
835 unsigned int r_symndx
;
836 struct elf_link_hash_entry
*h
;
837 Elf_Internal_Sym
*isym
;
839 r_symndx
= ELF64_R_SYM (rel
->r_info
);
841 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
843 /* xgettext:c-format */
844 _bfd_error_handler (_("%pB: bad symbol index: %d"),
849 if (r_symndx
< symtab_hdr
->sh_info
)
851 /* A local symbol. */
852 isym
= bfd_sym_from_r_symndx (&htab
->elf
.sym_cache
,
857 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
859 struct plt_entry
*plt
;
861 if (htab
->elf
.dynobj
== NULL
)
862 htab
->elf
.dynobj
= abfd
;
864 if (!s390_elf_create_ifunc_sections (htab
->elf
.dynobj
, info
))
867 if (local_got_refcounts
== NULL
)
869 if (!elf_s390_allocate_local_syminfo (abfd
, symtab_hdr
))
871 local_got_refcounts
= elf_local_got_refcounts (abfd
);
873 plt
= elf_s390_local_plt (abfd
);
874 plt
[r_symndx
].plt
.refcount
++;
880 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
881 while (h
->root
.type
== bfd_link_hash_indirect
882 || h
->root
.type
== bfd_link_hash_warning
)
883 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
886 /* Create got section and local_got_refcounts array if they
888 r_type
= elf_s390_tls_transition (info
,
889 ELF64_R_TYPE (rel
->r_info
),
904 case R_390_GOTPLTENT
:
906 case R_390_TLS_GOTIE12
:
907 case R_390_TLS_GOTIE20
:
908 case R_390_TLS_GOTIE64
:
909 case R_390_TLS_IEENT
:
911 case R_390_TLS_LDM64
:
913 && local_got_refcounts
== NULL
)
915 if (!elf_s390_allocate_local_syminfo (abfd
, symtab_hdr
))
917 local_got_refcounts
= elf_local_got_refcounts (abfd
);
926 if (htab
->elf
.sgot
== NULL
)
928 if (htab
->elf
.dynobj
== NULL
)
929 htab
->elf
.dynobj
= abfd
;
930 if (!_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
937 if (htab
->elf
.dynobj
== NULL
)
938 htab
->elf
.dynobj
= abfd
;
939 if (!s390_elf_create_ifunc_sections (htab
->elf
.dynobj
, info
))
942 /* Make sure an IFUNC symbol defined in a non-shared object
943 always gets a PLT slot. */
944 if (s390_is_ifunc_symbol_p (h
) && h
->def_regular
)
946 /* The symbol is called by the dynamic loader in order
947 to resolve the relocation. So it is in fact also
958 /* These relocs do not need a GOT slot. They just load the
959 GOT pointer itself or address something else relative to
960 the GOT. Since the GOT pointer has been set up above we
966 if (h
== NULL
|| !s390_is_ifunc_symbol_p (h
) || !h
->def_regular
)
979 /* This symbol requires a procedure linkage table entry. We
980 actually build the entry in adjust_dynamic_symbol,
981 because this might be a case of linking PIC code which is
982 never referenced by a dynamic object, in which case we
983 don't need to generate a procedure linkage table entry
986 /* If this is a local symbol, we resolve it directly without
987 creating a procedure linkage table entry. */
991 h
->plt
.refcount
+= 1;
1000 case R_390_GOTPLTENT
:
1001 /* This symbol requires either a procedure linkage table entry
1002 or an entry in the local got. We actually build the entry
1003 in adjust_dynamic_symbol because whether this is really a
1004 global reference can change and with it the fact if we have
1005 to create a plt entry or a local got entry. To be able to
1006 make a once global symbol a local one we have to keep track
1007 of the number of gotplt references that exist for this
1011 ((struct elf_s390_link_hash_entry
*) h
)->gotplt_refcount
++;
1013 h
->plt
.refcount
+= 1;
1016 local_got_refcounts
[r_symndx
] += 1;
1019 case R_390_TLS_LDM64
:
1020 htab
->tls_ldm_got
.refcount
+= 1;
1023 case R_390_TLS_IE64
:
1024 case R_390_TLS_GOTIE12
:
1025 case R_390_TLS_GOTIE20
:
1026 case R_390_TLS_GOTIE64
:
1027 case R_390_TLS_IEENT
:
1028 if (bfd_link_pic (info
))
1029 info
->flags
|= DF_STATIC_TLS
;
1038 case R_390_TLS_GD64
:
1039 /* This symbol requires a global offset table entry. */
1048 tls_type
= GOT_NORMAL
;
1050 case R_390_TLS_GD64
:
1051 tls_type
= GOT_TLS_GD
;
1053 case R_390_TLS_IE64
:
1054 case R_390_TLS_GOTIE64
:
1055 tls_type
= GOT_TLS_IE
;
1057 case R_390_TLS_GOTIE12
:
1058 case R_390_TLS_GOTIE20
:
1059 case R_390_TLS_IEENT
:
1060 tls_type
= GOT_TLS_IE_NLT
;
1066 h
->got
.refcount
+= 1;
1067 old_tls_type
= elf_s390_hash_entry(h
)->tls_type
;
1071 local_got_refcounts
[r_symndx
] += 1;
1072 old_tls_type
= elf_s390_local_got_tls_type (abfd
) [r_symndx
];
1074 /* If a TLS symbol is accessed using IE at least once,
1075 there is no point to use dynamic model for it. */
1076 if (old_tls_type
!= tls_type
&& old_tls_type
!= GOT_UNKNOWN
)
1078 if (old_tls_type
== GOT_NORMAL
|| tls_type
== GOT_NORMAL
)
1081 /* xgettext:c-format */
1082 (_("%pB: `%s' accessed both as normal and thread local symbol"),
1083 abfd
, h
->root
.root
.string
);
1086 if (old_tls_type
> tls_type
)
1087 tls_type
= old_tls_type
;
1090 if (old_tls_type
!= tls_type
)
1093 elf_s390_hash_entry (h
)->tls_type
= tls_type
;
1095 elf_s390_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
1098 if (r_type
!= R_390_TLS_IE64
)
1102 case R_390_TLS_LE64
:
1103 /* For static linking and executables this reloc will be
1104 calculated at linktime otherwise a TLS_TPOFF runtime
1105 reloc will be generated. */
1106 if (r_type
== R_390_TLS_LE64
&& bfd_link_pie (info
))
1109 if (!bfd_link_pic (info
))
1111 info
->flags
|= DF_STATIC_TLS
;
1125 if (h
!= NULL
&& bfd_link_executable (info
))
1127 /* If this reloc is in a read-only section, we might
1128 need a copy reloc. We can't check reliably at this
1129 stage whether the section is read-only, as input
1130 sections have not yet been mapped to output sections.
1131 Tentatively set the flag for now, and correct in
1132 adjust_dynamic_symbol. */
1135 if (!bfd_link_pic (info
))
1137 /* We may need a .plt entry if the function this reloc
1138 refers to is in a shared lib. */
1139 h
->plt
.refcount
+= 1;
1143 /* If we are creating a shared library, and this is a reloc
1144 against a global symbol, or a non PC relative reloc
1145 against a local symbol, then we need to copy the reloc
1146 into the shared library. However, if we are linking with
1147 -Bsymbolic, we do not need to copy a reloc against a
1148 global symbol which is defined in an object we are
1149 including in the link (i.e., DEF_REGULAR is set). At
1150 this point we have not seen all the input files, so it is
1151 possible that DEF_REGULAR is not set now but will be set
1152 later (it is never cleared). In case of a weak definition,
1153 DEF_REGULAR may be cleared later by a strong definition in
1154 a shared library. We account for that possibility below by
1155 storing information in the relocs_copied field of the hash
1156 table entry. A similar situation occurs when creating
1157 shared libraries and symbol visibility changes render the
1160 If on the other hand, we are creating an executable, we
1161 may need to keep relocations for symbols satisfied by a
1162 dynamic library if we manage to avoid copy relocs for the
1164 if ((bfd_link_pic (info
)
1165 && (sec
->flags
& SEC_ALLOC
) != 0
1166 && ((ELF64_R_TYPE (rel
->r_info
) != R_390_PC16
1167 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC12DBL
1168 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC16DBL
1169 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC24DBL
1170 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC32
1171 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC32DBL
1172 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC64
)
1174 && (! SYMBOLIC_BIND (info
, h
)
1175 || h
->root
.type
== bfd_link_hash_defweak
1176 || !h
->def_regular
))))
1177 || (ELIMINATE_COPY_RELOCS
1178 && !bfd_link_pic (info
)
1179 && (sec
->flags
& SEC_ALLOC
) != 0
1181 && (h
->root
.type
== bfd_link_hash_defweak
1182 || !h
->def_regular
)))
1184 struct elf_dyn_relocs
*p
;
1185 struct elf_dyn_relocs
**head
;
1187 /* We must copy these reloc types into the output file.
1188 Create a reloc section in dynobj and make room for
1192 if (htab
->elf
.dynobj
== NULL
)
1193 htab
->elf
.dynobj
= abfd
;
1195 sreloc
= _bfd_elf_make_dynamic_reloc_section
1196 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
1202 /* If this is a global symbol, we count the number of
1203 relocations we need for this symbol. */
1206 head
= &h
->dyn_relocs
;
1210 /* Track dynamic relocs needed for local syms too.
1211 We really need local syms available to do this
1216 isym
= bfd_sym_from_r_symndx (&htab
->elf
.sym_cache
,
1221 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
1225 vpp
= &elf_section_data (s
)->local_dynrel
;
1226 head
= (struct elf_dyn_relocs
**) vpp
;
1230 if (p
== NULL
|| p
->sec
!= sec
)
1232 size_t amt
= sizeof *p
;
1233 p
= ((struct elf_dyn_relocs
*)
1234 bfd_alloc (htab
->elf
.dynobj
, amt
));
1245 if (ELF64_R_TYPE (rel
->r_info
) == R_390_PC16
1246 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC12DBL
1247 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC16DBL
1248 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC16DBL
1249 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC32
1250 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC32DBL
1251 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC64
)
1256 /* This relocation describes the C++ object vtable hierarchy.
1257 Reconstruct it for later use during GC. */
1258 case R_390_GNU_VTINHERIT
:
1259 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1263 /* This relocation describes which C++ vtable entries are actually
1264 used. Record for later use during GC. */
1265 case R_390_GNU_VTENTRY
:
1266 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1278 /* Return the section that should be marked against GC for a given
1282 elf_s390_gc_mark_hook (asection
*sec
,
1283 struct bfd_link_info
*info
,
1284 Elf_Internal_Rela
*rel
,
1285 struct elf_link_hash_entry
*h
,
1286 Elf_Internal_Sym
*sym
)
1289 switch (ELF64_R_TYPE (rel
->r_info
))
1291 case R_390_GNU_VTINHERIT
:
1292 case R_390_GNU_VTENTRY
:
1296 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1299 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1300 entry but we found we will not create any. Called when we find we will
1301 not have any PLT for this symbol, by for example
1302 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1303 or elf_s390_size_dynamic_sections if no dynamic sections will be
1304 created (we're only linking static objects). */
1307 elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry
*h
)
1309 if (h
->elf
.root
.type
== bfd_link_hash_warning
)
1310 h
= (struct elf_s390_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
1312 if (h
->gotplt_refcount
<= 0)
1315 /* We simply add the number of gotplt references to the number
1316 * of got references for this symbol. */
1317 h
->elf
.got
.refcount
+= h
->gotplt_refcount
;
1318 h
->gotplt_refcount
= -1;
1321 /* Adjust a symbol defined by a dynamic object and referenced by a
1322 regular object. The current definition is in some section of the
1323 dynamic object, but we're not including those sections. We have to
1324 change the definition to something the rest of the link can
1328 elf_s390_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1329 struct elf_link_hash_entry
*h
)
1331 struct elf_s390_link_hash_table
*htab
;
1334 /* STT_GNU_IFUNC symbol must go through PLT. */
1335 if (s390_is_ifunc_symbol_p (h
))
1337 /* All local STT_GNU_IFUNC references must be treated as local
1338 calls via local PLT. */
1339 if (h
->ref_regular
&& SYMBOL_CALLS_LOCAL (info
, h
))
1341 bfd_size_type pc_count
= 0, count
= 0;
1342 struct elf_dyn_relocs
**pp
;
1343 struct elf_dyn_relocs
*p
;
1345 for (pp
= &h
->dyn_relocs
; (p
= *pp
) != NULL
; )
1347 pc_count
+= p
->pc_count
;
1348 p
->count
-= p
->pc_count
;
1357 if (pc_count
|| count
)
1361 if (h
->plt
.refcount
<= 0)
1362 h
->plt
.refcount
= 1;
1364 h
->plt
.refcount
+= 1;
1368 if (h
->plt
.refcount
<= 0)
1370 h
->plt
.offset
= (bfd_vma
) -1;
1376 /* If this is a function, put it in the procedure linkage table. We
1377 will fill in the contents of the procedure linkage table later
1378 (although we could actually do it here). */
1379 if (h
->type
== STT_FUNC
1382 if (h
->plt
.refcount
<= 0
1383 || SYMBOL_CALLS_LOCAL (info
, h
)
1384 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
1386 /* This case can occur if we saw a PLT32 reloc in an input
1387 file, but the symbol was never referred to by a dynamic
1388 object, or if all references were garbage collected. In
1389 such a case, we don't actually need to build a procedure
1390 linkage table, and we can just do a PC32 reloc instead. */
1391 h
->plt
.offset
= (bfd_vma
) -1;
1393 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1399 /* It's possible that we incorrectly decided a .plt reloc was
1400 needed for an R_390_PC32 reloc to a non-function sym in
1401 check_relocs. We can't decide accurately between function and
1402 non-function syms in check-relocs; Objects loaded later in
1403 the link may change h->type. So fix it now. */
1404 h
->plt
.offset
= (bfd_vma
) -1;
1406 /* If this is a weak symbol, and there is a real definition, the
1407 processor independent code will have arranged for us to see the
1408 real definition first, and we can just use the same value. */
1409 if (h
->is_weakalias
)
1411 struct elf_link_hash_entry
*def
= weakdef (h
);
1412 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
1413 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
1414 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
1415 if (ELIMINATE_COPY_RELOCS
|| info
->nocopyreloc
)
1416 h
->non_got_ref
= def
->non_got_ref
;
1420 /* This is a reference to a symbol defined by a dynamic object which
1421 is not a function. */
1423 /* If we are creating a shared library, we must presume that the
1424 only references to the symbol are via the global offset table.
1425 For such cases we need not do anything here; the relocations will
1426 be handled correctly by relocate_section. */
1427 if (bfd_link_pic (info
))
1430 /* If there are no references to this symbol that do not use the
1431 GOT, we don't need to generate a copy reloc. */
1432 if (!h
->non_got_ref
)
1435 /* If -z nocopyreloc was given, we won't generate them either. */
1436 if (info
->nocopyreloc
)
1442 /* If we don't find any dynamic relocs in read-only sections, then
1443 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1444 if (ELIMINATE_COPY_RELOCS
&& !_bfd_elf_readonly_dynrelocs (h
))
1450 /* We must allocate the symbol in our .dynbss section, which will
1451 become part of the .bss section of the executable. There will be
1452 an entry for this symbol in the .dynsym section. The dynamic
1453 object will contain position independent code, so all references
1454 from the dynamic object to this symbol will go through the global
1455 offset table. The dynamic linker will use the .dynsym entry to
1456 determine the address it must put in the global offset table, so
1457 both the dynamic object and the regular object will refer to the
1458 same memory location for the variable. */
1460 htab
= elf_s390_hash_table (info
);
1464 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1465 copy the initial value out of the dynamic object and into the
1466 runtime process image. */
1467 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
1469 s
= htab
->elf
.sdynrelro
;
1470 srel
= htab
->elf
.sreldynrelro
;
1474 s
= htab
->elf
.sdynbss
;
1475 srel
= htab
->elf
.srelbss
;
1477 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
1479 srel
->size
+= sizeof (Elf64_External_Rela
);
1483 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
1486 /* Allocate space in .plt, .got and associated reloc sections for
1490 allocate_dynrelocs (struct elf_link_hash_entry
*h
,
1493 struct bfd_link_info
*info
;
1494 struct elf_s390_link_hash_table
*htab
;
1495 struct elf_dyn_relocs
*p
;
1497 if (h
->root
.type
== bfd_link_hash_indirect
)
1500 info
= (struct bfd_link_info
*) inf
;
1501 htab
= elf_s390_hash_table (info
);
1505 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1506 here if it is defined and referenced in a non-shared object. */
1507 if (s390_is_ifunc_symbol_p (h
) && h
->def_regular
)
1508 return s390_elf_allocate_ifunc_dyn_relocs (info
, h
);
1509 else if (htab
->elf
.dynamic_sections_created
1510 && h
->plt
.refcount
> 0)
1512 /* Make sure this symbol is output as a dynamic symbol.
1513 Undefined weak syms won't yet be marked as dynamic. */
1514 if (h
->dynindx
== -1
1515 && !h
->forced_local
)
1517 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1521 if (bfd_link_pic (info
)
1522 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
1524 asection
*s
= htab
->elf
.splt
;
1526 /* If this is the first .plt entry, make room for the special
1529 s
->size
+= PLT_FIRST_ENTRY_SIZE
;
1531 h
->plt
.offset
= s
->size
;
1533 /* If this symbol is not defined in a regular file, and we are
1534 not generating a shared library, then set the symbol to this
1535 location in the .plt. This is required to make function
1536 pointers compare as equal between the normal executable and
1537 the shared library. */
1538 if (! bfd_link_pic (info
)
1541 h
->root
.u
.def
.section
= s
;
1542 h
->root
.u
.def
.value
= h
->plt
.offset
;
1545 /* Make room for this entry. */
1546 s
->size
+= PLT_ENTRY_SIZE
;
1548 /* We also need to make an entry in the .got.plt section. */
1549 htab
->elf
.sgotplt
->size
+= GOT_ENTRY_SIZE
;
1551 /* We also need to make an entry in the .rela.plt section. */
1552 htab
->elf
.srelplt
->size
+= sizeof (Elf64_External_Rela
);
1556 h
->plt
.offset
= (bfd_vma
) -1;
1558 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1563 h
->plt
.offset
= (bfd_vma
) -1;
1565 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1568 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1569 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1570 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1571 we can save the dynamic TLS relocation. */
1572 if (h
->got
.refcount
> 0
1573 && !bfd_link_pic (info
)
1575 && elf_s390_hash_entry(h
)->tls_type
>= GOT_TLS_IE
)
1577 if (elf_s390_hash_entry(h
)->tls_type
== GOT_TLS_IE_NLT
)
1578 /* For the GOTIE access without a literal pool entry the offset has
1579 to be stored somewhere. The immediate value in the instruction
1580 is not bit enough so the value is stored in the got. */
1582 h
->got
.offset
= htab
->elf
.sgot
->size
;
1583 htab
->elf
.sgot
->size
+= GOT_ENTRY_SIZE
;
1586 h
->got
.offset
= (bfd_vma
) -1;
1588 else if (h
->got
.refcount
> 0)
1592 int tls_type
= elf_s390_hash_entry(h
)->tls_type
;
1594 /* Make sure this symbol is output as a dynamic symbol.
1595 Undefined weak syms won't yet be marked as dynamic. */
1596 if (h
->dynindx
== -1
1597 && !h
->forced_local
)
1599 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1604 h
->got
.offset
= s
->size
;
1605 s
->size
+= GOT_ENTRY_SIZE
;
1606 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1607 if (tls_type
== GOT_TLS_GD
)
1608 s
->size
+= GOT_ENTRY_SIZE
;
1609 dyn
= htab
->elf
.dynamic_sections_created
;
1610 /* R_390_TLS_IE64 needs one dynamic relocation,
1611 R_390_TLS_GD64 needs one if local symbol and two if global. */
1612 if ((tls_type
== GOT_TLS_GD
&& h
->dynindx
== -1)
1613 || tls_type
>= GOT_TLS_IE
)
1614 htab
->elf
.srelgot
->size
+= sizeof (Elf64_External_Rela
);
1615 else if (tls_type
== GOT_TLS_GD
)
1616 htab
->elf
.srelgot
->size
+= 2 * sizeof (Elf64_External_Rela
);
1617 else if (!UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)
1618 && (bfd_link_pic (info
)
1619 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
1620 htab
->elf
.srelgot
->size
+= sizeof (Elf64_External_Rela
);
1623 h
->got
.offset
= (bfd_vma
) -1;
1625 if (h
->dyn_relocs
== NULL
)
1628 /* In the shared -Bsymbolic case, discard space allocated for
1629 dynamic pc-relative relocs against symbols which turn out to be
1630 defined in regular objects. For the normal shared case, discard
1631 space for pc-relative relocs that have become local due to symbol
1632 visibility changes. */
1634 if (bfd_link_pic (info
))
1636 if (SYMBOL_CALLS_LOCAL (info
, h
))
1638 struct elf_dyn_relocs
**pp
;
1640 for (pp
= &h
->dyn_relocs
; (p
= *pp
) != NULL
; )
1642 p
->count
-= p
->pc_count
;
1651 /* Also discard relocs on undefined weak syms with non-default
1653 if (h
->dyn_relocs
!= NULL
1654 && h
->root
.type
== bfd_link_hash_undefweak
)
1656 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
1657 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
1658 h
->dyn_relocs
= NULL
;
1660 /* Make sure undefined weak symbols are output as a dynamic
1662 else if (h
->dynindx
== -1
1663 && !h
->forced_local
)
1665 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1670 else if (ELIMINATE_COPY_RELOCS
)
1672 /* For the non-shared case, discard space for relocs against
1673 symbols which turn out to need copy relocs or are not
1679 || (htab
->elf
.dynamic_sections_created
1680 && (h
->root
.type
== bfd_link_hash_undefweak
1681 || h
->root
.type
== bfd_link_hash_undefined
))))
1683 /* Make sure this symbol is output as a dynamic symbol.
1684 Undefined weak syms won't yet be marked as dynamic. */
1685 if (h
->dynindx
== -1
1686 && !h
->forced_local
)
1688 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1692 /* If that succeeded, we know we'll be keeping all the
1694 if (h
->dynindx
!= -1)
1698 h
->dyn_relocs
= NULL
;
1703 /* Finally, allocate space. */
1704 for (p
= h
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1706 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
1707 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
1713 /* Set the sizes of the dynamic sections. */
1716 elf_s390_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
1717 struct bfd_link_info
*info
)
1719 struct elf_s390_link_hash_table
*htab
;
1725 htab
= elf_s390_hash_table (info
);
1729 dynobj
= htab
->elf
.dynobj
;
1733 if (htab
->elf
.dynamic_sections_created
)
1735 /* Set the contents of the .interp section to the interpreter. */
1736 if (bfd_link_executable (info
) && !info
->nointerp
)
1738 s
= bfd_get_linker_section (dynobj
, ".interp");
1741 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1742 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1746 if (htab
->elf
.sgot
&& s390_gotplt_after_got_p (info
))
1748 /* _bfd_elf_create_got_section adds the got header size always
1749 to .got.plt but we need it in .got if this section comes
1751 htab
->elf
.sgot
->size
+= 3 * GOT_ENTRY_SIZE
;
1752 htab
->elf
.sgotplt
->size
-= 3 * GOT_ENTRY_SIZE
;
1754 /* Make the _GLOBAL_OFFSET_TABLE_ symbol point to the .got
1755 instead of .got.plt. */
1756 htab
->elf
.hgot
->root
.u
.def
.section
= htab
->elf
.sgot
;
1757 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
1760 /* Set up .got offsets for local syms, and space for local dynamic
1762 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
1764 bfd_signed_vma
*local_got
;
1765 bfd_signed_vma
*end_local_got
;
1766 char *local_tls_type
;
1767 bfd_size_type locsymcount
;
1768 Elf_Internal_Shdr
*symtab_hdr
;
1770 struct plt_entry
*local_plt
;
1773 if (! is_s390_elf (ibfd
))
1776 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
1778 struct elf_dyn_relocs
*p
;
1780 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
1782 if (!bfd_is_abs_section (p
->sec
)
1783 && bfd_is_abs_section (p
->sec
->output_section
))
1785 /* Input section has been discarded, either because
1786 it is a copy of a linkonce section or due to
1787 linker script /DISCARD/, so we'll be discarding
1790 else if (p
->count
!= 0)
1792 srela
= elf_section_data (p
->sec
)->sreloc
;
1793 srela
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
1794 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
1795 info
->flags
|= DF_TEXTREL
;
1800 local_got
= elf_local_got_refcounts (ibfd
);
1804 symtab_hdr
= &elf_symtab_hdr (ibfd
);
1805 locsymcount
= symtab_hdr
->sh_info
;
1806 end_local_got
= local_got
+ locsymcount
;
1807 local_tls_type
= elf_s390_local_got_tls_type (ibfd
);
1809 srela
= htab
->elf
.srelgot
;
1810 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
1814 *local_got
= s
->size
;
1815 s
->size
+= GOT_ENTRY_SIZE
;
1816 if (*local_tls_type
== GOT_TLS_GD
)
1817 s
->size
+= GOT_ENTRY_SIZE
;
1818 if (bfd_link_pic (info
))
1819 srela
->size
+= sizeof (Elf64_External_Rela
);
1822 *local_got
= (bfd_vma
) -1;
1825 local_plt
= elf_s390_local_plt (ibfd
);
1826 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
1828 if (local_plt
[i
].plt
.refcount
> 0)
1830 local_plt
[i
].plt
.offset
= htab
->elf
.iplt
->size
;
1831 htab
->elf
.iplt
->size
+= PLT_ENTRY_SIZE
;
1832 htab
->elf
.igotplt
->size
+= GOT_ENTRY_SIZE
;
1833 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
1836 local_plt
[i
].plt
.offset
= (bfd_vma
) -1;
1840 if (htab
->tls_ldm_got
.refcount
> 0)
1842 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
1844 htab
->tls_ldm_got
.offset
= htab
->elf
.sgot
->size
;
1845 htab
->elf
.sgot
->size
+= 2 * GOT_ENTRY_SIZE
;
1846 htab
->elf
.srelgot
->size
+= sizeof (Elf64_External_Rela
);
1849 htab
->tls_ldm_got
.offset
= -1;
1851 /* Allocate global sym .plt and .got entries, and space for global
1852 sym dynamic relocs. */
1853 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
1855 /* We now have determined the sizes of the various dynamic sections.
1856 Allocate memory for them. */
1858 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
1860 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
1863 if (s
== htab
->elf
.splt
1864 || s
== htab
->elf
.sgot
1865 || s
== htab
->elf
.sgotplt
1866 || s
== htab
->elf
.sdynbss
1867 || s
== htab
->elf
.sdynrelro
1868 || s
== htab
->elf
.iplt
1869 || s
== htab
->elf
.igotplt
1870 || s
== htab
->irelifunc
)
1872 /* Strip this section if we don't need it; see the
1875 else if (CONST_STRNEQ (bfd_section_name (s
), ".rela"))
1877 if (s
->size
!= 0 && s
!= htab
->elf
.srelplt
)
1880 /* We use the reloc_count field as a counter if we need
1881 to copy relocs into the output file. */
1886 /* It's not one of our sections, so don't allocate space. */
1892 /* If we don't need this section, strip it from the
1893 output file. This is to handle .rela.bss and
1894 .rela.plt. We must create it in
1895 create_dynamic_sections, because it must be created
1896 before the linker maps input sections to output
1897 sections. The linker does that before
1898 adjust_dynamic_symbol is called, and it is that
1899 function which decides whether anything needs to go
1900 into these sections. */
1902 s
->flags
|= SEC_EXCLUDE
;
1906 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
1909 /* Allocate memory for the section contents. We use bfd_zalloc
1910 here in case unused entries are not reclaimed before the
1911 section's contents are written out. This should not happen,
1912 but this way if it does, we get a R_390_NONE reloc instead
1914 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
1915 if (s
->contents
== NULL
)
1919 return _bfd_elf_add_dynamic_tags (output_bfd
, info
, relocs
);
1922 /* Return the base VMA address which should be subtracted from real addresses
1923 when resolving @dtpoff relocation.
1924 This is PT_TLS segment p_vaddr. */
1927 dtpoff_base (struct bfd_link_info
*info
)
1929 /* If tls_sec is NULL, we should have signalled an error already. */
1930 if (elf_hash_table (info
)->tls_sec
== NULL
)
1932 return elf_hash_table (info
)->tls_sec
->vma
;
1935 /* Return the relocation value for @tpoff relocation
1936 if STT_TLS virtual address is ADDRESS. */
1939 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
1941 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
1943 /* If tls_sec is NULL, we should have signalled an error already. */
1944 if (htab
->tls_sec
== NULL
)
1946 return htab
->tls_size
+ htab
->tls_sec
->vma
- address
;
1949 /* Complain if TLS instruction relocation is against an invalid
1953 invalid_tls_insn (bfd
*input_bfd
,
1954 asection
*input_section
,
1955 Elf_Internal_Rela
*rel
)
1957 reloc_howto_type
*howto
;
1959 howto
= elf_howto_table
+ ELF64_R_TYPE (rel
->r_info
);
1961 /* xgettext:c-format */
1962 (_("%pB(%pA+%#" PRIx64
"): invalid instruction for TLS relocation %s"),
1965 (uint64_t) rel
->r_offset
,
1967 bfd_set_error (bfd_error_bad_value
);
1970 /* Relocate a 390 ELF section. */
1973 elf_s390_relocate_section (bfd
*output_bfd
,
1974 struct bfd_link_info
*info
,
1976 asection
*input_section
,
1978 Elf_Internal_Rela
*relocs
,
1979 Elf_Internal_Sym
*local_syms
,
1980 asection
**local_sections
)
1982 struct elf_s390_link_hash_table
*htab
;
1983 Elf_Internal_Shdr
*symtab_hdr
;
1984 struct elf_link_hash_entry
**sym_hashes
;
1985 bfd_vma
*local_got_offsets
;
1986 Elf_Internal_Rela
*rel
;
1987 Elf_Internal_Rela
*relend
;
1989 if (!is_s390_elf (input_bfd
))
1991 bfd_set_error (bfd_error_wrong_format
);
1995 htab
= elf_s390_hash_table (info
);
1999 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
2000 sym_hashes
= elf_sym_hashes (input_bfd
);
2001 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2004 relend
= relocs
+ input_section
->reloc_count
;
2005 for (; rel
< relend
; rel
++)
2007 unsigned int r_type
;
2008 reloc_howto_type
*howto
;
2009 unsigned long r_symndx
;
2010 struct elf_link_hash_entry
*h
;
2011 Elf_Internal_Sym
*sym
;
2015 bfd_boolean unresolved_reloc
;
2016 bfd_reloc_status_type r
;
2018 bfd_boolean resolved_to_zero
;
2020 r_type
= ELF64_R_TYPE (rel
->r_info
);
2021 if (r_type
== (int) R_390_GNU_VTINHERIT
2022 || r_type
== (int) R_390_GNU_VTENTRY
)
2024 if (r_type
>= (int) R_390_max
)
2026 bfd_set_error (bfd_error_bad_value
);
2030 howto
= elf_howto_table
+ r_type
;
2031 r_symndx
= ELF64_R_SYM (rel
->r_info
);
2036 unresolved_reloc
= FALSE
;
2037 if (r_symndx
< symtab_hdr
->sh_info
)
2039 sym
= local_syms
+ r_symndx
;
2040 sec
= local_sections
[r_symndx
];
2042 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
2044 struct plt_entry
*local_plt
= elf_s390_local_plt (input_bfd
);
2045 if (local_plt
== NULL
)
2048 /* Address of the PLT slot. */
2049 relocation
= (htab
->elf
.iplt
->output_section
->vma
2050 + htab
->elf
.iplt
->output_offset
2051 + local_plt
[r_symndx
].plt
.offset
);
2055 case R_390_PLTOFF16
:
2056 case R_390_PLTOFF32
:
2057 case R_390_PLTOFF64
:
2058 relocation
-= s390_got_pointer (info
);
2060 case R_390_GOTPLT12
:
2061 case R_390_GOTPLT16
:
2062 case R_390_GOTPLT20
:
2063 case R_390_GOTPLT32
:
2064 case R_390_GOTPLT64
:
2065 case R_390_GOTPLTENT
:
2073 /* Write the PLT slot address into the GOT slot. */
2074 bfd_put_64 (output_bfd
, relocation
,
2075 htab
->elf
.sgot
->contents
+
2076 local_got_offsets
[r_symndx
]);
2077 relocation
= (local_got_offsets
[r_symndx
] +
2078 s390_got_offset (info
));
2080 if (r_type
== R_390_GOTENT
|| r_type
== R_390_GOTPLTENT
)
2081 relocation
+= s390_got_pointer (info
);
2087 /* The output section is needed later in
2088 finish_dynamic_section when creating the dynamic
2090 local_plt
[r_symndx
].sec
= sec
;
2094 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2098 bfd_boolean warned ATTRIBUTE_UNUSED
;
2099 bfd_boolean ignored ATTRIBUTE_UNUSED
;
2101 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2102 r_symndx
, symtab_hdr
, sym_hashes
,
2104 unresolved_reloc
, warned
, ignored
);
2107 if (sec
!= NULL
&& discarded_section (sec
))
2108 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2109 rel
, 1, relend
, howto
, 0, contents
);
2111 if (bfd_link_relocatable (info
))
2114 resolved_to_zero
= (h
!= NULL
2115 && UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
2119 case R_390_GOTPLT12
:
2120 case R_390_GOTPLT16
:
2121 case R_390_GOTPLT20
:
2122 case R_390_GOTPLT32
:
2123 case R_390_GOTPLT64
:
2124 case R_390_GOTPLTENT
:
2125 /* There are three cases for a GOTPLT relocation. 1) The
2126 relocation is against the jump slot entry of a plt that
2127 will get emitted to the output file. 2) The relocation
2128 is against the jump slot of a plt entry that has been
2129 removed. elf_s390_adjust_gotplt has created a GOT entry
2130 as replacement. 3) The relocation is against a local symbol.
2131 Cases 2) and 3) are the same as the GOT relocation code
2132 so we just have to test for case 1 and fall through for
2134 if (h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
2138 if (s390_is_ifunc_symbol_p (h
))
2140 /* Entry indices of .iplt and .igot.plt match
2141 1:1. No magic PLT first entry here. */
2142 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
;
2143 relocation
= (plt_index
* GOT_ENTRY_SIZE
2144 + s390_gotplt_offset (info
)
2145 + htab
->elf
.igotplt
->output_offset
);
2149 plt_index
= ((h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
)
2152 relocation
= (plt_index
* GOT_ENTRY_SIZE
2153 + s390_gotplt_offset (info
));
2155 if (r_type
== R_390_GOTPLTENT
)
2156 relocation
+= s390_got_pointer (info
);
2157 unresolved_reloc
= FALSE
;
2168 /* Relocation is to the entry for this symbol in the global
2170 if (htab
->elf
.sgot
== NULL
)
2177 off
= h
->got
.offset
;
2178 dyn
= htab
->elf
.dynamic_sections_created
;
2180 if (s390_is_ifunc_symbol_p (h
))
2182 BFD_ASSERT (h
->plt
.offset
!= (bfd_vma
) -1);
2183 if (off
== (bfd_vma
)-1)
2185 /* No explicit GOT usage so redirect to the
2187 relocation
= (s390_gotplt_offset (info
)
2188 + htab
->elf
.igotplt
->output_offset
2189 + (h
->plt
.offset
/ PLT_ENTRY_SIZE
2192 /* For @GOTENT the relocation is against the offset between
2193 the instruction and the symbols entry in the GOT and not
2194 between the start of the GOT and the symbols entry. We
2195 add the vma of the GOT to get the correct value. */
2196 if (r_type
== R_390_GOTENT
|| r_type
== R_390_GOTPLTENT
)
2197 relocation
+= s390_got_pointer (info
);
2203 /* Explicit GOT slots must contain the address
2204 of the PLT slot. This will be handled in
2205 finish_dynamic_symbol. */
2208 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2209 bfd_link_pic (info
),
2211 || (bfd_link_pic (info
)
2212 && SYMBOL_REFERENCES_LOCAL (info
, h
))
2213 || resolved_to_zero
)
2215 Elf_Internal_Sym
*isym
;
2218 /* This is actually a static link, or it is a
2219 -Bsymbolic link and the symbol is defined
2220 locally, or the symbol was forced to be local
2221 because of a version file. We must initialize
2222 this entry in the global offset table. Since the
2223 offset must always be a multiple of 2, we use the
2224 least significant bit to record whether we have
2225 initialized it already.
2227 When doing a dynamic link, we create a .rel.got
2228 relocation entry to initialize the value. This
2229 is done in the finish_dynamic_symbol routine. */
2234 bfd_put_64 (output_bfd
, relocation
,
2235 htab
->elf
.sgot
->contents
+ off
);
2239 /* When turning a GOT slot dereference into a direct
2240 reference using larl we have to make sure that
2241 the symbol is 1. properly aligned and 2. it is no
2242 ABS symbol or will become one. */
2244 && bfd_link_pic (info
)
2245 && SYMBOL_REFERENCES_LOCAL (info
, h
))
2246 /* lgrl rx,sym@GOTENT -> larl rx, sym */
2247 && ((r_type
== R_390_GOTENT
2248 && (bfd_get_16 (input_bfd
,
2249 contents
+ rel
->r_offset
- 2)
2250 & 0xff0f) == 0xc408)
2251 /* lg rx, sym@GOT(r12) -> larl rx, sym */
2252 || (r_type
== R_390_GOT20
2253 && (bfd_get_32 (input_bfd
,
2254 contents
+ rel
->r_offset
- 2)
2255 & 0xff00f000) == 0xe300c000
2256 && bfd_get_8 (input_bfd
,
2257 contents
+ rel
->r_offset
+ 3) == 0x04))
2258 && (isym
= bfd_sym_from_r_symndx (&htab
->elf
.sym_cache
,
2259 input_bfd
, r_symndx
))
2260 && isym
->st_shndx
!= SHN_ABS
2261 && h
!= htab
->elf
.hdynamic
2262 && h
!= htab
->elf
.hgot
2263 && h
!= htab
->elf
.hplt
2264 && !(isym
->st_value
& 1)
2265 && (sym_sec
= bfd_section_from_elf_index (input_bfd
,
2267 && sym_sec
->alignment_power
)
2269 unsigned short new_insn
=
2270 (0xc000 | (bfd_get_8 (input_bfd
,
2271 contents
+ rel
->r_offset
- 1) & 0xf0));
2272 bfd_put_16 (output_bfd
, new_insn
,
2273 contents
+ rel
->r_offset
- 2);
2274 r_type
= R_390_PC32DBL
;
2276 howto
= elf_howto_table
+ r_type
;
2277 relocation
= h
->root
.u
.def
.value
2278 + h
->root
.u
.def
.section
->output_section
->vma
2279 + h
->root
.u
.def
.section
->output_offset
;
2284 unresolved_reloc
= FALSE
;
2288 if (local_got_offsets
== NULL
)
2291 off
= local_got_offsets
[r_symndx
];
2293 /* The offset must always be a multiple of 8. We use
2294 the least significant bit to record whether we have
2295 already generated the necessary reloc. */
2300 bfd_put_64 (output_bfd
, relocation
,
2301 htab
->elf
.sgot
->contents
+ off
);
2303 if (bfd_link_pic (info
))
2306 Elf_Internal_Rela outrel
;
2309 s
= htab
->elf
.srelgot
;
2313 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
2314 + htab
->elf
.sgot
->output_offset
2316 outrel
.r_info
= ELF64_R_INFO (0, R_390_RELATIVE
);
2317 outrel
.r_addend
= relocation
;
2319 loc
+= s
->reloc_count
++ * sizeof (Elf64_External_Rela
);
2320 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2323 local_got_offsets
[r_symndx
] |= 1;
2327 if (off
>= (bfd_vma
) -2)
2330 relocation
= s390_got_offset (info
) + off
;
2332 /* For @GOTENT the relocation is against the offset between
2333 the instruction and the symbols entry in the GOT and not
2334 between the start of the GOT and the symbols entry. We
2335 add the vma of the GOT to get the correct value. */
2336 if ( r_type
== R_390_GOTENT
2337 || r_type
== R_390_GOTPLTENT
)
2338 relocation
+= s390_got_pointer (info
);
2342 case R_390_GOTOFF16
:
2343 case R_390_GOTOFF32
:
2344 case R_390_GOTOFF64
:
2345 /* Relocation is relative to the start of the global offset
2349 && s390_is_ifunc_symbol_p (h
)
2351 && !bfd_link_executable (info
))
2353 relocation
= (htab
->elf
.iplt
->output_section
->vma
2354 + htab
->elf
.iplt
->output_offset
2356 - s390_got_pointer (info
));
2360 relocation
-= s390_got_pointer (info
);
2364 case R_390_GOTPCDBL
:
2365 /* Use global offset table as symbol value. */
2366 relocation
= s390_got_pointer (info
);
2367 unresolved_reloc
= FALSE
;
2370 case R_390_PLT12DBL
:
2371 case R_390_PLT16DBL
:
2372 case R_390_PLT24DBL
:
2374 case R_390_PLT32DBL
:
2376 /* Relocation is to the entry for this symbol in the
2377 procedure linkage table. */
2379 /* Resolve a PLT32 reloc against a local symbol directly,
2380 without using the procedure linkage table. */
2384 if (h
->plt
.offset
== (bfd_vma
) -1
2385 || (htab
->elf
.splt
== NULL
&& !s390_is_ifunc_symbol_p (h
)))
2387 /* We didn't make a PLT entry for this symbol. This
2388 happens when statically linking PIC code, or when
2389 using -Bsymbolic. */
2392 if (s390_is_ifunc_symbol_p (h
))
2393 relocation
= (htab
->elf
.iplt
->output_section
->vma
2394 + htab
->elf
.iplt
->output_offset
2397 relocation
= (htab
->elf
.splt
->output_section
->vma
2398 + htab
->elf
.splt
->output_offset
2400 unresolved_reloc
= FALSE
;
2403 case R_390_PLTOFF16
:
2404 case R_390_PLTOFF32
:
2405 case R_390_PLTOFF64
:
2406 /* Relocation is to the entry for this symbol in the
2407 procedure linkage table relative to the start of the GOT. */
2409 /* For local symbols or if we didn't make a PLT entry for
2410 this symbol resolve the symbol directly. */
2412 || h
->plt
.offset
== (bfd_vma
) -1
2413 || (htab
->elf
.splt
== NULL
&& !s390_is_ifunc_symbol_p (h
)))
2415 relocation
-= s390_got_pointer (info
);
2419 if (s390_is_ifunc_symbol_p (h
))
2420 relocation
= (htab
->elf
.iplt
->output_section
->vma
2421 + htab
->elf
.iplt
->output_offset
2423 - s390_got_pointer (info
));
2425 relocation
= (htab
->elf
.splt
->output_section
->vma
2426 + htab
->elf
.splt
->output_offset
2428 - s390_got_pointer (info
));
2429 unresolved_reloc
= FALSE
;
2440 && bfd_link_pie (info
)
2443 _bfd_error_handler (_("%pB: `%s' non-PLT reloc for symbol defined "
2444 "in shared library and accessed "
2446 "(rebuild file with -fPIC ?)"),
2447 input_bfd
, h
->root
.root
.string
);
2448 bfd_set_error (bfd_error_bad_value
);
2451 /* The target of these relocs are instruction operands
2452 residing in read-only sections. We cannot emit a runtime
2455 && s390_is_ifunc_symbol_p (h
)
2457 && bfd_link_pic (info
))
2459 relocation
= (htab
->elf
.iplt
->output_section
->vma
2460 + htab
->elf
.iplt
->output_offset
2471 if ((input_section
->flags
& SEC_ALLOC
) == 0)
2475 && s390_is_ifunc_symbol_p (h
)
2478 if (!bfd_link_pic (info
))
2480 /* For a non-shared object the symbol will not
2481 change. Hence we can write the address of the
2482 target IPLT slot now. */
2483 relocation
= (htab
->elf
.iplt
->output_section
->vma
2484 + htab
->elf
.iplt
->output_offset
2490 /* For shared objects a runtime relocation is needed. */
2492 Elf_Internal_Rela outrel
;
2495 /* Need a dynamic relocation to get the real function
2497 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
2501 if (outrel
.r_offset
== (bfd_vma
) -1
2502 || outrel
.r_offset
== (bfd_vma
) -2)
2505 outrel
.r_offset
+= (input_section
->output_section
->vma
2506 + input_section
->output_offset
);
2508 if (h
->dynindx
== -1
2510 || bfd_link_executable (info
))
2512 /* This symbol is resolved locally. */
2513 outrel
.r_info
= ELF64_R_INFO (0, R_390_IRELATIVE
);
2514 outrel
.r_addend
= (h
->root
.u
.def
.value
2515 + h
->root
.u
.def
.section
->output_section
->vma
2516 + h
->root
.u
.def
.section
->output_offset
);
2520 outrel
.r_info
= ELF64_R_INFO (h
->dynindx
, r_type
);
2521 outrel
.r_addend
= 0;
2524 sreloc
= htab
->elf
.irelifunc
;
2525 elf_append_rela (output_bfd
, sreloc
, &outrel
);
2527 /* If this reloc is against an external symbol, we
2528 do not want to fiddle with the addend. Otherwise,
2529 we need to include the symbol value so that it
2530 becomes an addend for the dynamic reloc. For an
2531 internal symbol, we have updated addend. */
2536 if ((bfd_link_pic (info
)
2538 || (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2539 && !resolved_to_zero
)
2540 || h
->root
.type
!= bfd_link_hash_undefweak
)
2541 && ((r_type
!= R_390_PC16
2542 && r_type
!= R_390_PC12DBL
2543 && r_type
!= R_390_PC16DBL
2544 && r_type
!= R_390_PC24DBL
2545 && r_type
!= R_390_PC32
2546 && r_type
!= R_390_PC32DBL
2547 && r_type
!= R_390_PC64
)
2548 || !SYMBOL_CALLS_LOCAL (info
, h
)))
2549 || (ELIMINATE_COPY_RELOCS
2550 && !bfd_link_pic (info
)
2556 || h
->root
.type
== bfd_link_hash_undefweak
2557 || h
->root
.type
== bfd_link_hash_undefined
)))
2559 Elf_Internal_Rela outrel
;
2560 bfd_boolean skip
, relocate
;
2564 /* When generating a shared object, these relocations
2565 are copied into the output file to be resolved at run
2571 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2573 if (outrel
.r_offset
== (bfd_vma
) -1)
2575 else if (outrel
.r_offset
== (bfd_vma
) -2)
2576 skip
= TRUE
, relocate
= TRUE
;
2578 outrel
.r_offset
+= (input_section
->output_section
->vma
2579 + input_section
->output_offset
);
2582 memset (&outrel
, 0, sizeof outrel
);
2585 && (r_type
== R_390_PC16
2586 || r_type
== R_390_PC12DBL
2587 || r_type
== R_390_PC16DBL
2588 || r_type
== R_390_PC24DBL
2589 || r_type
== R_390_PC32
2590 || r_type
== R_390_PC32DBL
2591 || r_type
== R_390_PC64
2592 || !bfd_link_pic (info
)
2593 || !SYMBOLIC_BIND (info
, h
)
2594 || !h
->def_regular
))
2596 outrel
.r_info
= ELF64_R_INFO (h
->dynindx
, r_type
);
2597 outrel
.r_addend
= rel
->r_addend
;
2601 /* This symbol is local, or marked to become local. */
2602 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2603 if (r_type
== R_390_64
)
2606 outrel
.r_info
= ELF64_R_INFO (0, R_390_RELATIVE
);
2612 if (bfd_is_abs_section (sec
))
2614 else if (sec
== NULL
|| sec
->owner
== NULL
)
2616 bfd_set_error(bfd_error_bad_value
);
2623 osec
= sec
->output_section
;
2624 sindx
= elf_section_data (osec
)->dynindx
;
2628 osec
= htab
->elf
.text_index_section
;
2629 sindx
= elf_section_data (osec
)->dynindx
;
2631 BFD_ASSERT (sindx
!= 0);
2633 /* We are turning this relocation into one
2634 against a section symbol, so subtract out
2635 the output section's address but not the
2636 offset of the input section in the output
2638 outrel
.r_addend
-= osec
->vma
;
2640 outrel
.r_info
= ELF64_R_INFO (sindx
, r_type
);
2644 sreloc
= elf_section_data (input_section
)->sreloc
;
2648 loc
= sreloc
->contents
;
2649 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
2650 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2652 /* If this reloc is against an external symbol, we do
2653 not want to fiddle with the addend. Otherwise, we
2654 need to include the symbol value so that it becomes
2655 an addend for the dynamic reloc. */
2662 /* Relocations for tls literal pool entries. */
2663 case R_390_TLS_IE64
:
2664 if (bfd_link_pic (info
))
2666 Elf_Internal_Rela outrel
;
2670 outrel
.r_offset
= rel
->r_offset
2671 + input_section
->output_section
->vma
2672 + input_section
->output_offset
;
2673 outrel
.r_info
= ELF64_R_INFO (0, R_390_RELATIVE
);
2674 sreloc
= elf_section_data (input_section
)->sreloc
;
2677 loc
= sreloc
->contents
;
2678 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
2679 bfd_elf64_swap_reloc_out (output_bfd
, &outrel
, loc
);
2683 case R_390_TLS_GD64
:
2684 case R_390_TLS_GOTIE64
:
2685 r_type
= elf_s390_tls_transition (info
, r_type
, h
== NULL
);
2686 tls_type
= GOT_UNKNOWN
;
2687 if (h
== NULL
&& local_got_offsets
)
2688 tls_type
= elf_s390_local_got_tls_type (input_bfd
) [r_symndx
];
2691 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2692 if (!bfd_link_pic (info
) && h
->dynindx
== -1 && tls_type
>= GOT_TLS_IE
)
2693 r_type
= R_390_TLS_LE64
;
2695 if (r_type
== R_390_TLS_GD64
&& tls_type
>= GOT_TLS_IE
)
2696 r_type
= R_390_TLS_IE64
;
2698 if (r_type
== R_390_TLS_LE64
)
2700 /* This relocation gets optimized away by the local exec
2701 access optimization. */
2702 BFD_ASSERT (! unresolved_reloc
);
2703 bfd_put_64 (output_bfd
, -tpoff (info
, relocation
),
2704 contents
+ rel
->r_offset
);
2708 if (htab
->elf
.sgot
== NULL
)
2712 off
= h
->got
.offset
;
2715 if (local_got_offsets
== NULL
)
2718 off
= local_got_offsets
[r_symndx
];
2727 Elf_Internal_Rela outrel
;
2731 if (htab
->elf
.srelgot
== NULL
)
2734 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
2735 + htab
->elf
.sgot
->output_offset
+ off
);
2737 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
2738 if (r_type
== R_390_TLS_GD64
)
2739 dr_type
= R_390_TLS_DTPMOD
;
2741 dr_type
= R_390_TLS_TPOFF
;
2742 if (dr_type
== R_390_TLS_TPOFF
&& indx
== 0)
2743 outrel
.r_addend
= relocation
- dtpoff_base (info
);
2745 outrel
.r_addend
= 0;
2746 outrel
.r_info
= ELF64_R_INFO (indx
, dr_type
);
2747 loc
= htab
->elf
.srelgot
->contents
;
2748 loc
+= htab
->elf
.srelgot
->reloc_count
++
2749 * sizeof (Elf64_External_Rela
);
2750 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2752 if (r_type
== R_390_TLS_GD64
)
2756 BFD_ASSERT (! unresolved_reloc
);
2757 bfd_put_64 (output_bfd
,
2758 relocation
- dtpoff_base (info
),
2759 htab
->elf
.sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
2763 outrel
.r_info
= ELF64_R_INFO (indx
, R_390_TLS_DTPOFF
);
2764 outrel
.r_offset
+= GOT_ENTRY_SIZE
;
2765 outrel
.r_addend
= 0;
2766 htab
->elf
.srelgot
->reloc_count
++;
2767 loc
+= sizeof (Elf64_External_Rela
);
2768 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2775 local_got_offsets
[r_symndx
] |= 1;
2778 if (off
>= (bfd_vma
) -2)
2780 if (r_type
== ELF64_R_TYPE (rel
->r_info
))
2782 relocation
= htab
->elf
.sgot
->output_offset
+ off
;
2783 if (r_type
== R_390_TLS_IE64
|| r_type
== R_390_TLS_IEENT
)
2784 relocation
+= htab
->elf
.sgot
->output_section
->vma
;
2785 unresolved_reloc
= FALSE
;
2789 bfd_put_64 (output_bfd
, htab
->elf
.sgot
->output_offset
+ off
,
2790 contents
+ rel
->r_offset
);
2795 case R_390_TLS_GOTIE12
:
2796 case R_390_TLS_GOTIE20
:
2797 case R_390_TLS_IEENT
:
2800 if (local_got_offsets
== NULL
)
2802 off
= local_got_offsets
[r_symndx
];
2803 if (bfd_link_pic (info
))
2804 goto emit_tls_relocs
;
2808 off
= h
->got
.offset
;
2809 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2810 if (bfd_link_pic (info
) || h
->dynindx
!= -1 || tls_type
< GOT_TLS_IE
)
2811 goto emit_tls_relocs
;
2814 if (htab
->elf
.sgot
== NULL
)
2817 BFD_ASSERT (! unresolved_reloc
);
2818 bfd_put_64 (output_bfd
, -tpoff (info
, relocation
),
2819 htab
->elf
.sgot
->contents
+ off
);
2820 relocation
= htab
->elf
.sgot
->output_offset
+ off
;
2821 if (r_type
== R_390_TLS_IEENT
)
2822 relocation
+= htab
->elf
.sgot
->output_section
->vma
;
2823 unresolved_reloc
= FALSE
;
2826 case R_390_TLS_LDM64
:
2827 if (! bfd_link_pic (info
))
2828 /* The literal pool entry this relocation refers to gets ignored
2829 by the optimized code of the local exec model. Do nothing
2830 and the value will turn out zero. */
2833 if (htab
->elf
.sgot
== NULL
)
2836 off
= htab
->tls_ldm_got
.offset
;
2841 Elf_Internal_Rela outrel
;
2844 if (htab
->elf
.srelgot
== NULL
)
2847 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
2848 + htab
->elf
.sgot
->output_offset
+ off
);
2850 bfd_put_64 (output_bfd
, 0,
2851 htab
->elf
.sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
2852 outrel
.r_info
= ELF64_R_INFO (0, R_390_TLS_DTPMOD
);
2853 outrel
.r_addend
= 0;
2854 loc
= htab
->elf
.srelgot
->contents
;
2855 loc
+= htab
->elf
.srelgot
->reloc_count
++
2856 * sizeof (Elf64_External_Rela
);
2857 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2858 htab
->tls_ldm_got
.offset
|= 1;
2860 relocation
= htab
->elf
.sgot
->output_offset
+ off
;
2861 unresolved_reloc
= FALSE
;
2864 case R_390_TLS_LE64
:
2865 if (bfd_link_dll (info
))
2867 /* Linking a shared library with non-fpic code requires
2868 a R_390_TLS_TPOFF relocation. */
2869 Elf_Internal_Rela outrel
;
2874 outrel
.r_offset
= rel
->r_offset
2875 + input_section
->output_section
->vma
2876 + input_section
->output_offset
;
2877 if (h
!= NULL
&& h
->dynindx
!= -1)
2881 outrel
.r_info
= ELF64_R_INFO (indx
, R_390_TLS_TPOFF
);
2883 outrel
.r_addend
= relocation
- dtpoff_base (info
);
2885 outrel
.r_addend
= 0;
2886 sreloc
= elf_section_data (input_section
)->sreloc
;
2889 loc
= sreloc
->contents
;
2890 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
2891 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2895 BFD_ASSERT (! unresolved_reloc
);
2896 bfd_put_64 (output_bfd
, -tpoff (info
, relocation
),
2897 contents
+ rel
->r_offset
);
2901 case R_390_TLS_LDO64
:
2902 if (bfd_link_pic (info
) || (input_section
->flags
& SEC_DEBUGGING
))
2903 relocation
-= dtpoff_base (info
);
2905 /* When converting LDO to LE, we must negate. */
2906 relocation
= -tpoff (info
, relocation
);
2909 /* Relocations for tls instructions. */
2910 case R_390_TLS_LOAD
:
2911 case R_390_TLS_GDCALL
:
2912 case R_390_TLS_LDCALL
:
2913 tls_type
= GOT_UNKNOWN
;
2914 if (h
== NULL
&& local_got_offsets
)
2915 tls_type
= elf_s390_local_got_tls_type (input_bfd
) [r_symndx
];
2917 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2919 if (tls_type
== GOT_TLS_GD
)
2922 if (r_type
== R_390_TLS_LOAD
)
2924 if (!bfd_link_pic (info
) && (h
== NULL
|| h
->dynindx
== -1))
2926 /* IE->LE transition. Four valid cases:
2927 lg %rx,(0,%ry) -> sllg %rx,%ry,0
2928 lg %rx,(%ry,0) -> sllg %rx,%ry,0
2929 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
2930 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
2931 unsigned int insn0
, insn1
, ry
;
2933 insn0
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2934 insn1
= bfd_get_16 (input_bfd
, contents
+ rel
->r_offset
+ 4);
2935 if (insn1
!= 0x0004)
2937 invalid_tls_insn (input_bfd
, input_section
, rel
);
2940 if ((insn0
& 0xff00f000) == 0xe3000000)
2941 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
2942 ry
= (insn0
& 0x000f0000);
2943 else if ((insn0
& 0xff0f0000) == 0xe3000000)
2944 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
2945 ry
= (insn0
& 0x0000f000) << 4;
2946 else if ((insn0
& 0xff00f000) == 0xe300c000)
2947 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
2948 ry
= (insn0
& 0x000f0000);
2949 else if ((insn0
& 0xff0f0000) == 0xe30c0000)
2950 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
2951 ry
= (insn0
& 0x0000f000) << 4;
2954 invalid_tls_insn (input_bfd
, input_section
, rel
);
2957 insn0
= 0xeb000000 | (insn0
& 0x00f00000) | ry
;
2959 bfd_put_32 (output_bfd
, insn0
, contents
+ rel
->r_offset
);
2960 bfd_put_16 (output_bfd
, insn1
, contents
+ rel
->r_offset
+ 4);
2963 else if (r_type
== R_390_TLS_GDCALL
)
2965 unsigned int insn0
, insn1
;
2967 insn0
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2968 insn1
= bfd_get_16 (input_bfd
, contents
+ rel
->r_offset
+ 4);
2969 if ((insn0
& 0xffff0000) != 0xc0e50000)
2971 invalid_tls_insn (input_bfd
, input_section
, rel
);
2974 if (!bfd_link_pic (info
) && (h
== NULL
|| h
->dynindx
== -1))
2976 /* GD->LE transition.
2977 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
2983 /* GD->IE transition.
2984 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
2988 bfd_put_32 (output_bfd
, insn0
, contents
+ rel
->r_offset
);
2989 bfd_put_16 (output_bfd
, insn1
, contents
+ rel
->r_offset
+ 4);
2991 else if (r_type
== R_390_TLS_LDCALL
)
2993 if (!bfd_link_pic (info
))
2995 unsigned int insn0
, insn1
;
2997 insn0
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2998 insn1
= bfd_get_16 (input_bfd
, contents
+ rel
->r_offset
+ 4);
2999 if ((insn0
& 0xffff0000) != 0xc0e50000)
3001 invalid_tls_insn (input_bfd
, input_section
, rel
);
3004 /* LD->LE transition.
3005 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3008 bfd_put_32 (output_bfd
, insn0
, contents
+ rel
->r_offset
);
3009 bfd_put_16 (output_bfd
, insn1
, contents
+ rel
->r_offset
+ 4);
3018 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3019 because such sections are not SEC_ALLOC and thus ld.so will
3020 not process them. */
3021 if (unresolved_reloc
3022 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
3024 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
3025 rel
->r_offset
) != (bfd_vma
) -1)
3027 /* xgettext:c-format */
3028 (_("%pB(%pA+%#" PRIx64
"): "
3029 "unresolvable %s relocation against symbol `%s'"),
3032 (uint64_t) rel
->r_offset
,
3034 h
->root
.root
.string
);
3038 /* When applying a 24 bit reloc we need to start one byte
3039 earlier. Otherwise the 32 bit get/put bfd operations might
3040 access a byte after the actual section. */
3041 if (r_type
== R_390_PC24DBL
3042 || r_type
== R_390_PLT24DBL
)
3045 if (r_type
== R_390_20
3046 || r_type
== R_390_GOT20
3047 || r_type
== R_390_GOTPLT20
3048 || r_type
== R_390_TLS_GOTIE20
)
3050 relocation
+= rel
->r_addend
;
3051 relocation
= (relocation
&0xfff) << 8 | (relocation
&0xff000) >> 12;
3052 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3053 contents
, rel
->r_offset
,
3057 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3058 contents
, rel
->r_offset
,
3059 relocation
, rel
->r_addend
);
3061 if (r
!= bfd_reloc_ok
)
3066 name
= h
->root
.root
.string
;
3069 name
= bfd_elf_string_from_elf_section (input_bfd
,
3070 symtab_hdr
->sh_link
,
3075 name
= bfd_section_name (sec
);
3078 if (r
== bfd_reloc_overflow
)
3079 (*info
->callbacks
->reloc_overflow
)
3080 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
3081 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
3085 /* xgettext:c-format */
3086 (_("%pB(%pA+%#" PRIx64
"): reloc against `%s': error %d"),
3087 input_bfd
, input_section
,
3088 (uint64_t) rel
->r_offset
, name
, (int) r
);
3097 /* Generate the PLT slots together with the dynamic relocations needed
3098 for IFUNC symbols. */
3101 elf_s390_finish_ifunc_symbol (bfd
*output_bfd
,
3102 struct bfd_link_info
*info
,
3103 struct elf_link_hash_entry
*h
,
3104 struct elf_s390_link_hash_table
*htab
,
3106 bfd_vma resolver_address
)
3110 Elf_Internal_Rela rela
;
3112 asection
*plt
, *gotplt
, *relplt
;
3114 if (htab
->elf
.iplt
== NULL
3115 || htab
->elf
.igotplt
== NULL
3116 || htab
->elf
.irelplt
== NULL
)
3119 /* Index of the PLT slot within iplt section. */
3120 plt_index
= plt_offset
/ PLT_ENTRY_SIZE
;
3121 plt
= htab
->elf
.iplt
;
3122 /* Offset into the igot.plt section. */
3123 got_offset
= plt_index
* GOT_ENTRY_SIZE
;
3124 gotplt
= htab
->elf
.igotplt
;
3125 relplt
= htab
->elf
.irelplt
;
3127 /* Fill in the blueprint of a PLT. */
3128 memcpy (plt
->contents
+ plt_offset
, elf_s390x_plt_entry
,
3131 /* Fixup the relative address to the GOT entry */
3132 bfd_put_32 (output_bfd
,
3133 (gotplt
->output_section
->vma
+
3134 gotplt
->output_offset
+ got_offset
3135 - (plt
->output_section
->vma
+
3136 plt
->output_offset
+
3138 plt
->contents
+ plt_offset
+ 2);
3139 /* Fixup the relative branch to PLT 0 */
3140 bfd_put_32 (output_bfd
, - (plt
->output_offset
+
3141 (PLT_ENTRY_SIZE
* plt_index
) + 22)/2,
3142 plt
->contents
+ plt_offset
+ 24);
3143 /* Fixup offset into .rela.plt section. */
3144 bfd_put_32 (output_bfd
, relplt
->output_offset
+
3145 plt_index
* sizeof (Elf64_External_Rela
),
3146 plt
->contents
+ plt_offset
+ 28);
3148 /* Fill in the entry in the global offset table.
3149 Points to instruction after GOT offset. */
3150 bfd_put_64 (output_bfd
,
3151 (plt
->output_section
->vma
3152 + plt
->output_offset
3155 gotplt
->contents
+ got_offset
);
3157 /* Fill in the entry in the .rela.plt section. */
3158 rela
.r_offset
= (gotplt
->output_section
->vma
3159 + gotplt
->output_offset
3164 || ((bfd_link_executable (info
)
3165 || ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
3168 /* The symbol can be locally resolved. */
3169 rela
.r_info
= ELF64_R_INFO (0, R_390_IRELATIVE
);
3170 rela
.r_addend
= resolver_address
;
3174 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_390_JMP_SLOT
);
3178 loc
= relplt
->contents
+ plt_index
* sizeof (Elf64_External_Rela
);
3179 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
3183 /* Finish up dynamic symbol handling. We set the contents of various
3184 dynamic sections here. */
3187 elf_s390_finish_dynamic_symbol (bfd
*output_bfd
,
3188 struct bfd_link_info
*info
,
3189 struct elf_link_hash_entry
*h
,
3190 Elf_Internal_Sym
*sym
)
3192 struct elf_s390_link_hash_table
*htab
;
3193 struct elf_s390_link_hash_entry
*eh
= (struct elf_s390_link_hash_entry
*)h
;
3195 htab
= elf_s390_hash_table (info
);
3199 if (h
->plt
.offset
!= (bfd_vma
) -1)
3202 bfd_vma gotplt_offset
;
3203 Elf_Internal_Rela rela
;
3206 /* This symbol has an entry in the procedure linkage table. Set
3208 if (s390_is_ifunc_symbol_p (h
) && h
->def_regular
)
3210 elf_s390_finish_ifunc_symbol (output_bfd
, info
, h
,
3211 htab
, h
->plt
.offset
,
3212 eh
->ifunc_resolver_address
+
3213 eh
->ifunc_resolver_section
->output_offset
+
3214 eh
->ifunc_resolver_section
->output_section
->vma
);
3216 /* Do not return yet. Handling of explicit GOT slots of
3217 IFUNC symbols is below. */
3221 if (h
->dynindx
== -1
3222 || htab
->elf
.splt
== NULL
3223 || htab
->elf
.sgotplt
== NULL
3224 || htab
->elf
.srelplt
== NULL
)
3228 Current offset - size first entry / entry size. */
3229 plt_index
= (h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
) / PLT_ENTRY_SIZE
;
3231 /* The slots in the .got.plt correspond to the PLT slots in
3233 gotplt_offset
= plt_index
* GOT_ENTRY_SIZE
;
3235 /* If .got.plt comes first it needs to contain the 3 header
3237 if (!s390_gotplt_after_got_p (info
))
3238 gotplt_offset
+= 3 * GOT_ENTRY_SIZE
;
3240 /* Fill in the blueprint of a PLT. */
3241 memcpy (htab
->elf
.splt
->contents
+ h
->plt
.offset
, elf_s390x_plt_entry
,
3244 /* The first instruction in the PLT entry is a LARL loading
3245 the address of the GOT slot. We write the 4 byte
3246 immediate operand of the LARL instruction here. */
3247 bfd_put_32 (output_bfd
,
3248 (htab
->elf
.sgotplt
->output_section
->vma
+
3249 htab
->elf
.sgotplt
->output_offset
+ gotplt_offset
3250 - (htab
->elf
.splt
->output_section
->vma
+
3251 htab
->elf
.splt
->output_offset
+
3253 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 2);
3254 /* Fixup the relative branch to PLT 0 */
3255 bfd_put_32 (output_bfd
, - (PLT_FIRST_ENTRY_SIZE
+
3256 (PLT_ENTRY_SIZE
* plt_index
) + 22)/2,
3257 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 24);
3258 /* Fixup offset into .rela.plt section. */
3259 bfd_put_32 (output_bfd
, plt_index
* sizeof (Elf64_External_Rela
),
3260 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 28);
3262 /* Fill in the entry in the global offset table.
3263 Points to instruction after GOT offset. */
3264 bfd_put_64 (output_bfd
,
3265 (htab
->elf
.splt
->output_section
->vma
3266 + htab
->elf
.splt
->output_offset
3269 htab
->elf
.sgotplt
->contents
+ gotplt_offset
);
3271 /* Fill in the entry in the .rela.plt section. */
3272 rela
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
3273 + htab
->elf
.sgotplt
->output_offset
3275 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_390_JMP_SLOT
);
3277 loc
= htab
->elf
.srelplt
->contents
+ plt_index
*
3278 sizeof (Elf64_External_Rela
);
3279 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
3281 if (!h
->def_regular
)
3283 /* Mark the symbol as undefined, rather than as defined in
3284 the .plt section. Leave the value alone. This is a clue
3285 for the dynamic linker, to make function pointer
3286 comparisons work between an application and shared
3288 sym
->st_shndx
= SHN_UNDEF
;
3293 if (h
->got
.offset
!= (bfd_vma
) -1
3294 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_GD
3295 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_IE
3296 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_IE_NLT
)
3298 Elf_Internal_Rela rela
;
3301 /* This symbol has an entry in the global offset table. Set it
3303 if (htab
->elf
.sgot
== NULL
|| htab
->elf
.srelgot
== NULL
)
3306 rela
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
3307 + htab
->elf
.sgot
->output_offset
3308 + (h
->got
.offset
&~ (bfd_vma
) 1));
3310 if (h
->def_regular
&& s390_is_ifunc_symbol_p (h
))
3312 if (bfd_link_pic (info
))
3314 /* An explicit GOT slot usage needs GLOB_DAT. If the
3315 symbol references local the implicit got.iplt slot
3316 will be used and the IRELATIVE reloc has been created
3322 /* For non-shared objects explicit GOT slots must be
3323 filled with the PLT slot address for pointer
3324 equality reasons. */
3325 bfd_put_64 (output_bfd
, (htab
->elf
.iplt
->output_section
->vma
3326 + htab
->elf
.iplt
->output_offset
3328 htab
->elf
.sgot
->contents
+ h
->got
.offset
);
3332 else if (bfd_link_pic (info
)
3333 && SYMBOL_REFERENCES_LOCAL (info
, h
))
3335 if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
3338 /* If this is a static link, or it is a -Bsymbolic link and
3339 the symbol is defined locally or was forced to be local
3340 because of a version file, we just want to emit a
3341 RELATIVE reloc. The entry in the global offset table
3342 will already have been initialized in the
3343 relocate_section function. */
3344 if (!(h
->def_regular
|| ELF_COMMON_DEF_P (h
)))
3346 BFD_ASSERT((h
->got
.offset
& 1) != 0);
3347 rela
.r_info
= ELF64_R_INFO (0, R_390_RELATIVE
);
3348 rela
.r_addend
= (h
->root
.u
.def
.value
3349 + h
->root
.u
.def
.section
->output_section
->vma
3350 + h
->root
.u
.def
.section
->output_offset
);
3354 BFD_ASSERT((h
->got
.offset
& 1) == 0);
3356 bfd_put_64 (output_bfd
, (bfd_vma
) 0, htab
->elf
.sgot
->contents
+ h
->got
.offset
);
3357 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_390_GLOB_DAT
);
3361 loc
= htab
->elf
.srelgot
->contents
;
3362 loc
+= htab
->elf
.srelgot
->reloc_count
++ * sizeof (Elf64_External_Rela
);
3363 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
3368 Elf_Internal_Rela rela
;
3372 /* This symbols needs a copy reloc. Set it up. */
3374 if (h
->dynindx
== -1
3375 || (h
->root
.type
!= bfd_link_hash_defined
3376 && h
->root
.type
!= bfd_link_hash_defweak
)
3377 || htab
->elf
.srelbss
== NULL
)
3380 rela
.r_offset
= (h
->root
.u
.def
.value
3381 + h
->root
.u
.def
.section
->output_section
->vma
3382 + h
->root
.u
.def
.section
->output_offset
);
3383 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_390_COPY
);
3385 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
3386 s
= htab
->elf
.sreldynrelro
;
3388 s
= htab
->elf
.srelbss
;
3389 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf64_External_Rela
);
3390 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
3393 /* Mark some specially defined symbols as absolute. */
3394 if (h
== htab
->elf
.hdynamic
3395 || h
== htab
->elf
.hgot
3396 || h
== htab
->elf
.hplt
)
3397 sym
->st_shndx
= SHN_ABS
;
3402 /* Used to decide how to sort relocs in an optimal manner for the
3403 dynamic linker, before writing them out. */
3405 static enum elf_reloc_type_class
3406 elf_s390_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3407 const asection
*rel_sec ATTRIBUTE_UNUSED
,
3408 const Elf_Internal_Rela
*rela
)
3410 bfd
*abfd
= info
->output_bfd
;
3411 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3412 struct elf_s390_link_hash_table
*htab
= elf_s390_hash_table (info
);
3413 unsigned long r_symndx
= ELF64_R_SYM (rela
->r_info
);
3414 Elf_Internal_Sym sym
;
3416 if (htab
->elf
.dynsym
== NULL
3417 || !bed
->s
->swap_symbol_in (abfd
,
3418 (htab
->elf
.dynsym
->contents
3419 + r_symndx
* bed
->s
->sizeof_sym
),
3423 /* Check relocation against STT_GNU_IFUNC symbol. */
3424 if (ELF_ST_TYPE (sym
.st_info
) == STT_GNU_IFUNC
)
3425 return reloc_class_ifunc
;
3427 switch ((int) ELF64_R_TYPE (rela
->r_info
))
3429 case R_390_RELATIVE
:
3430 return reloc_class_relative
;
3431 case R_390_JMP_SLOT
:
3432 return reloc_class_plt
;
3434 return reloc_class_copy
;
3436 return reloc_class_normal
;
3440 /* Finish up the dynamic sections. */
3443 elf_s390_finish_dynamic_sections (bfd
*output_bfd
,
3444 struct bfd_link_info
*info
)
3446 struct elf_s390_link_hash_table
*htab
;
3452 htab
= elf_s390_hash_table (info
);
3456 dynobj
= htab
->elf
.dynobj
;
3457 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
3459 if (htab
->elf
.dynamic_sections_created
)
3461 Elf64_External_Dyn
*dyncon
, *dynconend
;
3463 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
3466 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
3467 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3468 for (; dyncon
< dynconend
; dyncon
++)
3470 Elf_Internal_Dyn dyn
;
3473 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3481 /* DT_PLTGOT matches _GLOBAL_OFFSET_TABLE_ */
3482 dyn
.d_un
.d_ptr
= s390_got_pointer (info
);
3486 s
= htab
->elf
.srelplt
;
3487 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3491 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
3492 if (htab
->elf
.irelplt
)
3493 dyn
.d_un
.d_val
+= htab
->elf
.irelplt
->size
;
3497 /* The procedure linkage table relocs (DT_JMPREL) should
3498 not be included in the overall relocs (DT_RELA).
3499 Therefore, we override the DT_RELASZ entry here to
3500 make it not include the JMPREL relocs. Since the
3501 linker script arranges for .rela.plt to follow all
3502 other relocation sections, we don't have to worry
3503 about changing the DT_RELA entry. */
3504 dyn
.d_un
.d_val
-= htab
->elf
.srelplt
->size
;
3505 if (htab
->elf
.irelplt
)
3506 dyn
.d_un
.d_val
-= htab
->elf
.irelplt
->size
;
3510 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3513 /* Fill in the special first entry in the procedure linkage table. */
3514 if (htab
->elf
.splt
&& htab
->elf
.splt
->size
> 0)
3516 /* fill in blueprint for plt 0 entry */
3517 memcpy (htab
->elf
.splt
->contents
, elf_s390x_first_plt_entry
,
3518 PLT_FIRST_ENTRY_SIZE
);
3519 /* The second instruction in the first PLT entry is a LARL
3520 loading the GOT pointer. Fill in the LARL immediate
3522 bfd_put_32 (output_bfd
,
3523 (s390_got_pointer (info
)
3524 - htab
->elf
.splt
->output_section
->vma
3525 - htab
->elf
.splt
->output_offset
- 6)/2,
3526 htab
->elf
.splt
->contents
+ 8);
3528 if (elf_section_data (htab
->elf
.splt
->output_section
) != NULL
)
3529 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
3533 if (htab
->elf
.hgot
&& htab
->elf
.hgot
->root
.u
.def
.section
)
3535 /* Fill in the first three entries in the global offset table. */
3536 if (htab
->elf
.hgot
->root
.u
.def
.section
->size
> 0)
3538 bfd_put_64 (output_bfd
,
3539 (sdyn
== NULL
? (bfd_vma
) 0
3540 : sdyn
->output_section
->vma
+ sdyn
->output_offset
),
3541 htab
->elf
.hgot
->root
.u
.def
.section
->contents
);
3542 /* One entry for shared object struct ptr. */
3543 bfd_put_64 (output_bfd
, (bfd_vma
) 0,
3544 htab
->elf
.hgot
->root
.u
.def
.section
->contents
+ 8);
3545 /* One entry for _dl_runtime_resolve. */
3546 bfd_put_64 (output_bfd
, (bfd_vma
) 0,
3547 htab
->elf
.hgot
->root
.u
.def
.section
->contents
+ 16);
3549 elf_section_data (htab
->elf
.sgot
->output_section
)
3550 ->this_hdr
.sh_entsize
= 8;
3553 /* Finish dynamic symbol for local IFUNC symbols. */
3554 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
3556 struct plt_entry
*local_plt
;
3557 Elf_Internal_Sym
*isym
;
3558 Elf_Internal_Shdr
*symtab_hdr
;
3560 symtab_hdr
= &elf_symtab_hdr (ibfd
);
3562 if (!is_s390_elf (ibfd
))
3565 local_plt
= elf_s390_local_plt (ibfd
);
3566 if (local_plt
!= NULL
)
3567 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
3569 if (local_plt
[i
].plt
.offset
!= (bfd_vma
) -1)
3571 asection
*sec
= local_plt
[i
].sec
;
3572 isym
= bfd_sym_from_r_symndx (&htab
->elf
.sym_cache
, ibfd
, i
);
3576 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
3577 elf_s390_finish_ifunc_symbol (output_bfd
, info
, NULL
, htab
,
3578 local_plt
[i
].plt
.offset
,
3580 + sec
->output_section
->vma
3581 + sec
->output_offset
);
3590 /* Support for core dump NOTE sections. */
3593 elf_s390_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
3598 switch (note
->descsz
)
3603 case 336: /* sizeof(struct elf_prstatus) on s390x */
3605 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
3608 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
3616 /* Make a ".reg/999" section. */
3617 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
3618 size
, note
->descpos
+ offset
);
3622 elf_s390_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
3624 switch (note
->descsz
)
3629 case 136: /* sizeof(struct elf_prpsinfo) on s390x */
3630 elf_tdata (abfd
)->core
->pid
3631 = bfd_get_32 (abfd
, note
->descdata
+ 24);
3632 elf_tdata (abfd
)->core
->program
3633 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
3634 elf_tdata (abfd
)->core
->command
3635 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
3638 /* Note that for some reason, a spurious space is tacked
3639 onto the end of the args in some (at least one anyway)
3640 implementations, so strip it off if it exists. */
3643 char *command
= elf_tdata (abfd
)->core
->command
;
3644 int n
= strlen (command
);
3646 if (0 < n
&& command
[n
- 1] == ' ')
3647 command
[n
- 1] = '\0';
3654 elf_s390_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
,
3666 char data
[136] ATTRIBUTE_NONSTRING
= { 0 };
3667 const char *fname
, *psargs
;
3669 va_start (ap
, note_type
);
3670 fname
= va_arg (ap
, const char *);
3671 psargs
= va_arg (ap
, const char *);
3674 strncpy (data
+ 40, fname
, 16);
3675 #if GCC_VERSION == 8000 || GCC_VERSION == 8001
3677 /* GCC 8.0 and 8.1 warn about 80 equals destination size with
3678 -Wstringop-truncation:
3679 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643
3681 DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION
;
3683 strncpy (data
+ 56, psargs
, 80);
3684 #if GCC_VERSION == 8000 || GCC_VERSION == 8001
3687 return elfcore_write_note (abfd
, buf
, bufsiz
, "CORE", note_type
,
3688 &data
, sizeof (data
));
3693 char data
[336] = { 0 };
3698 va_start (ap
, note_type
);
3699 pid
= va_arg (ap
, long);
3700 cursig
= va_arg (ap
, int);
3701 gregs
= va_arg (ap
, const void *);
3704 bfd_put_16 (abfd
, cursig
, data
+ 12);
3705 bfd_put_32 (abfd
, pid
, data
+ 32);
3706 memcpy (data
+ 112, gregs
, 216);
3707 return elfcore_write_note (abfd
, buf
, bufsiz
, "CORE", note_type
,
3708 &data
, sizeof (data
));
3714 /* Return address for Ith PLT stub in section PLT, for relocation REL
3715 or (bfd_vma) -1 if it should not be included. */
3718 elf_s390_plt_sym_val (bfd_vma i
, const asection
*plt
,
3719 const arelent
*rel ATTRIBUTE_UNUSED
)
3721 return plt
->vma
+ PLT_FIRST_ENTRY_SIZE
+ i
* PLT_ENTRY_SIZE
;
3724 /* Merge backend specific data from an object file to the output
3725 object file when linking. */
3728 elf64_s390_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
3730 if (!is_s390_elf (ibfd
) || !is_s390_elf (info
->output_bfd
))
3733 return elf_s390_merge_obj_attributes (ibfd
, info
);
3736 /* We may add a PT_S390_PGSTE program header. */
3739 elf_s390_additional_program_headers (bfd
*abfd ATTRIBUTE_UNUSED
,
3740 struct bfd_link_info
*info
)
3742 struct elf_s390_link_hash_table
*htab
;
3746 htab
= elf_s390_hash_table (info
);
3748 return htab
->params
->pgste
;
3754 /* Add the PT_S390_PGSTE program header. */
3757 elf_s390_modify_segment_map (bfd
*abfd
, struct bfd_link_info
*info
)
3759 struct elf_s390_link_hash_table
*htab
;
3760 struct elf_segment_map
*m
, *pm
= NULL
;
3765 htab
= elf_s390_hash_table (info
);
3766 if (!htab
|| !htab
->params
->pgste
)
3769 /* If there is already a PT_S390_PGSTE header, avoid adding
3771 m
= elf_seg_map (abfd
);
3772 while (m
&& m
->p_type
!= PT_S390_PGSTE
)
3781 m
= (struct elf_segment_map
*)
3782 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
));
3785 m
->p_type
= PT_S390_PGSTE
;
3795 bfd_elf_s390_set_options (struct bfd_link_info
*info
,
3796 struct s390_elf_params
*params
)
3798 struct elf_s390_link_hash_table
*htab
;
3802 htab
= elf_s390_hash_table (info
);
3804 htab
->params
= params
;
3811 /* Why was the hash table entry size definition changed from
3812 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3813 this is the only reason for the s390_elf64_size_info structure. */
3815 const struct elf_size_info s390_elf64_size_info
=
3817 sizeof (Elf64_External_Ehdr
),
3818 sizeof (Elf64_External_Phdr
),
3819 sizeof (Elf64_External_Shdr
),
3820 sizeof (Elf64_External_Rel
),
3821 sizeof (Elf64_External_Rela
),
3822 sizeof (Elf64_External_Sym
),
3823 sizeof (Elf64_External_Dyn
),
3824 sizeof (Elf_External_Note
),
3825 8, /* hash-table entry size. */
3826 1, /* internal relocations per external relocations. */
3827 64, /* arch_size. */
3828 3, /* log_file_align. */
3829 ELFCLASS64
, EV_CURRENT
,
3830 bfd_elf64_write_out_phdrs
,
3831 bfd_elf64_write_shdrs_and_ehdr
,
3832 bfd_elf64_checksum_contents
,
3833 bfd_elf64_write_relocs
,
3834 bfd_elf64_swap_symbol_in
,
3835 bfd_elf64_swap_symbol_out
,
3836 bfd_elf64_slurp_reloc_table
,
3837 bfd_elf64_slurp_symbol_table
,
3838 bfd_elf64_swap_dyn_in
,
3839 bfd_elf64_swap_dyn_out
,
3840 bfd_elf64_swap_reloc_in
,
3841 bfd_elf64_swap_reloc_out
,
3842 bfd_elf64_swap_reloca_in
,
3843 bfd_elf64_swap_reloca_out
3846 #define TARGET_BIG_SYM s390_elf64_vec
3847 #define TARGET_BIG_NAME "elf64-s390"
3848 #define ELF_ARCH bfd_arch_s390
3849 #define ELF_TARGET_ID S390_ELF_DATA
3850 #define ELF_MACHINE_CODE EM_S390
3851 #define ELF_MACHINE_ALT1 EM_S390_OLD
3852 #define ELF_MAXPAGESIZE 0x1000
3854 #define elf_backend_size_info s390_elf64_size_info
3856 #define elf_backend_can_gc_sections 1
3857 #define elf_backend_can_refcount 1
3858 #define elf_backend_want_got_plt 1
3859 #define elf_backend_plt_readonly 1
3860 #define elf_backend_want_plt_sym 0
3861 #define elf_backend_got_header_size 24
3862 #define elf_backend_want_dynrelro 1
3863 #define elf_backend_rela_normal 1
3865 #define elf_info_to_howto elf_s390_info_to_howto
3867 #define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3868 #define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3869 #define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3870 #define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
3871 #define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
3873 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3874 #define elf_backend_check_relocs elf_s390_check_relocs
3875 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3876 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
3877 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3878 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3879 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3880 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3881 #define elf_backend_relocate_section elf_s390_relocate_section
3882 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3883 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3884 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
3885 #define elf_backend_grok_psinfo elf_s390_grok_psinfo
3886 #define elf_backend_write_core_note elf_s390_write_core_note
3887 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
3888 #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
3889 #define elf_backend_additional_program_headers elf_s390_additional_program_headers
3890 #define elf_backend_modify_segment_map elf_s390_modify_segment_map
3892 #define bfd_elf64_mkobject elf_s390_mkobject
3893 #define elf_backend_object_p elf_s390_object_p
3895 #include "elf64-target.h"