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 /* Small local sym cache. */
667 struct sym_cache sym_cache
;
669 /* Options passed from the linker. */
670 struct s390_elf_params
*params
;
673 /* Get the s390 ELF linker hash table from a link_info structure. */
675 #define elf_s390_hash_table(p) \
676 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
677 == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
680 #include "elf-s390-common.c"
682 /* Create an entry in an s390 ELF linker hash table. */
684 static struct bfd_hash_entry
*
685 link_hash_newfunc (struct bfd_hash_entry
*entry
,
686 struct bfd_hash_table
*table
,
689 /* Allocate the structure if it has not already been allocated by a
693 entry
= bfd_hash_allocate (table
,
694 sizeof (struct elf_s390_link_hash_entry
));
699 /* Call the allocation method of the superclass. */
700 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
703 struct elf_s390_link_hash_entry
*eh
;
705 eh
= (struct elf_s390_link_hash_entry
*) entry
;
706 eh
->gotplt_refcount
= 0;
707 eh
->tls_type
= GOT_UNKNOWN
;
708 eh
->ifunc_resolver_address
= 0;
709 eh
->ifunc_resolver_section
= NULL
;
715 /* Create an s390 ELF linker hash table. */
717 static struct bfd_link_hash_table
*
718 elf_s390_link_hash_table_create (bfd
*abfd
)
720 struct elf_s390_link_hash_table
*ret
;
721 size_t amt
= sizeof (struct elf_s390_link_hash_table
);
723 ret
= (struct elf_s390_link_hash_table
*) bfd_zmalloc (amt
);
727 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
, link_hash_newfunc
,
728 sizeof (struct elf_s390_link_hash_entry
),
735 return &ret
->elf
.root
;
738 /* Copy the extra info we tack onto an elf_link_hash_entry. */
741 elf_s390_copy_indirect_symbol (struct bfd_link_info
*info
,
742 struct elf_link_hash_entry
*dir
,
743 struct elf_link_hash_entry
*ind
)
745 struct elf_s390_link_hash_entry
*edir
, *eind
;
747 edir
= (struct elf_s390_link_hash_entry
*) dir
;
748 eind
= (struct elf_s390_link_hash_entry
*) ind
;
750 if (ind
->dyn_relocs
!= NULL
)
752 if (dir
->dyn_relocs
!= NULL
)
754 struct elf_dyn_relocs
**pp
;
755 struct elf_dyn_relocs
*p
;
757 /* Add reloc counts against the indirect sym to the direct sym
758 list. Merge any entries against the same section. */
759 for (pp
= &ind
->dyn_relocs
; (p
= *pp
) != NULL
; )
761 struct elf_dyn_relocs
*q
;
763 for (q
= dir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
764 if (q
->sec
== p
->sec
)
766 q
->pc_count
+= p
->pc_count
;
767 q
->count
+= p
->count
;
774 *pp
= dir
->dyn_relocs
;
777 dir
->dyn_relocs
= ind
->dyn_relocs
;
778 ind
->dyn_relocs
= NULL
;
781 if (ind
->root
.type
== bfd_link_hash_indirect
782 && dir
->got
.refcount
<= 0)
784 edir
->tls_type
= eind
->tls_type
;
785 eind
->tls_type
= GOT_UNKNOWN
;
788 if (ELIMINATE_COPY_RELOCS
789 && ind
->root
.type
!= bfd_link_hash_indirect
790 && dir
->dynamic_adjusted
)
792 /* If called to transfer flags for a weakdef during processing
793 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
794 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
795 if (dir
->versioned
!= versioned_hidden
)
796 dir
->ref_dynamic
|= ind
->ref_dynamic
;
797 dir
->ref_regular
|= ind
->ref_regular
;
798 dir
->ref_regular_nonweak
|= ind
->ref_regular_nonweak
;
799 dir
->needs_plt
|= ind
->needs_plt
;
802 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
806 elf_s390_tls_transition (struct bfd_link_info
*info
,
810 if (bfd_link_pic (info
))
818 return R_390_TLS_LE64
;
819 return R_390_TLS_IE64
;
820 case R_390_TLS_GOTIE64
:
822 return R_390_TLS_LE64
;
823 return R_390_TLS_GOTIE64
;
824 case R_390_TLS_LDM64
:
825 return R_390_TLS_LE64
;
831 /* Look through the relocs for a section during the first phase, and
832 allocate space in the global offset table or procedure linkage
836 elf_s390_check_relocs (bfd
*abfd
,
837 struct bfd_link_info
*info
,
839 const Elf_Internal_Rela
*relocs
)
841 struct elf_s390_link_hash_table
*htab
;
842 Elf_Internal_Shdr
*symtab_hdr
;
843 struct elf_link_hash_entry
**sym_hashes
;
844 const Elf_Internal_Rela
*rel
;
845 const Elf_Internal_Rela
*rel_end
;
847 bfd_signed_vma
*local_got_refcounts
;
848 int tls_type
, old_tls_type
;
850 if (bfd_link_relocatable (info
))
853 BFD_ASSERT (is_s390_elf (abfd
));
855 htab
= elf_s390_hash_table (info
);
859 symtab_hdr
= &elf_symtab_hdr (abfd
);
860 sym_hashes
= elf_sym_hashes (abfd
);
861 local_got_refcounts
= elf_local_got_refcounts (abfd
);
865 rel_end
= relocs
+ sec
->reloc_count
;
866 for (rel
= relocs
; rel
< rel_end
; rel
++)
869 unsigned int r_symndx
;
870 struct elf_link_hash_entry
*h
;
871 Elf_Internal_Sym
*isym
;
873 r_symndx
= ELF64_R_SYM (rel
->r_info
);
875 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
877 /* xgettext:c-format */
878 _bfd_error_handler (_("%pB: bad symbol index: %d"),
883 if (r_symndx
< symtab_hdr
->sh_info
)
885 /* A local symbol. */
886 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
891 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
893 struct plt_entry
*plt
;
895 if (htab
->elf
.dynobj
== NULL
)
896 htab
->elf
.dynobj
= abfd
;
898 if (!s390_elf_create_ifunc_sections (htab
->elf
.dynobj
, info
))
901 if (local_got_refcounts
== NULL
)
903 if (!elf_s390_allocate_local_syminfo (abfd
, symtab_hdr
))
905 local_got_refcounts
= elf_local_got_refcounts (abfd
);
907 plt
= elf_s390_local_plt (abfd
);
908 plt
[r_symndx
].plt
.refcount
++;
914 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
915 while (h
->root
.type
== bfd_link_hash_indirect
916 || h
->root
.type
== bfd_link_hash_warning
)
917 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
920 /* Create got section and local_got_refcounts array if they
922 r_type
= elf_s390_tls_transition (info
,
923 ELF64_R_TYPE (rel
->r_info
),
938 case R_390_GOTPLTENT
:
940 case R_390_TLS_GOTIE12
:
941 case R_390_TLS_GOTIE20
:
942 case R_390_TLS_GOTIE64
:
943 case R_390_TLS_IEENT
:
945 case R_390_TLS_LDM64
:
947 && local_got_refcounts
== NULL
)
949 if (!elf_s390_allocate_local_syminfo (abfd
, symtab_hdr
))
951 local_got_refcounts
= elf_local_got_refcounts (abfd
);
960 if (htab
->elf
.sgot
== NULL
)
962 if (htab
->elf
.dynobj
== NULL
)
963 htab
->elf
.dynobj
= abfd
;
964 if (!_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
971 if (htab
->elf
.dynobj
== NULL
)
972 htab
->elf
.dynobj
= abfd
;
973 if (!s390_elf_create_ifunc_sections (htab
->elf
.dynobj
, info
))
976 /* Make sure an IFUNC symbol defined in a non-shared object
977 always gets a PLT slot. */
978 if (s390_is_ifunc_symbol_p (h
) && h
->def_regular
)
980 /* The symbol is called by the dynamic loader in order
981 to resolve the relocation. So it is in fact also
992 /* These relocs do not need a GOT slot. They just load the
993 GOT pointer itself or address something else relative to
994 the GOT. Since the GOT pointer has been set up above we
1000 if (h
== NULL
|| !s390_is_ifunc_symbol_p (h
) || !h
->def_regular
)
1004 case R_390_PLT12DBL
:
1005 case R_390_PLT16DBL
:
1006 case R_390_PLT24DBL
:
1008 case R_390_PLT32DBL
:
1010 case R_390_PLTOFF16
:
1011 case R_390_PLTOFF32
:
1012 case R_390_PLTOFF64
:
1013 /* This symbol requires a procedure linkage table entry. We
1014 actually build the entry in adjust_dynamic_symbol,
1015 because this might be a case of linking PIC code which is
1016 never referenced by a dynamic object, in which case we
1017 don't need to generate a procedure linkage table entry
1020 /* If this is a local symbol, we resolve it directly without
1021 creating a procedure linkage table entry. */
1025 h
->plt
.refcount
+= 1;
1029 case R_390_GOTPLT12
:
1030 case R_390_GOTPLT16
:
1031 case R_390_GOTPLT20
:
1032 case R_390_GOTPLT32
:
1033 case R_390_GOTPLT64
:
1034 case R_390_GOTPLTENT
:
1035 /* This symbol requires either a procedure linkage table entry
1036 or an entry in the local got. We actually build the entry
1037 in adjust_dynamic_symbol because whether this is really a
1038 global reference can change and with it the fact if we have
1039 to create a plt entry or a local got entry. To be able to
1040 make a once global symbol a local one we have to keep track
1041 of the number of gotplt references that exist for this
1045 ((struct elf_s390_link_hash_entry
*) h
)->gotplt_refcount
++;
1047 h
->plt
.refcount
+= 1;
1050 local_got_refcounts
[r_symndx
] += 1;
1053 case R_390_TLS_LDM64
:
1054 htab
->tls_ldm_got
.refcount
+= 1;
1057 case R_390_TLS_IE64
:
1058 case R_390_TLS_GOTIE12
:
1059 case R_390_TLS_GOTIE20
:
1060 case R_390_TLS_GOTIE64
:
1061 case R_390_TLS_IEENT
:
1062 if (bfd_link_pic (info
))
1063 info
->flags
|= DF_STATIC_TLS
;
1072 case R_390_TLS_GD64
:
1073 /* This symbol requires a global offset table entry. */
1082 tls_type
= GOT_NORMAL
;
1084 case R_390_TLS_GD64
:
1085 tls_type
= GOT_TLS_GD
;
1087 case R_390_TLS_IE64
:
1088 case R_390_TLS_GOTIE64
:
1089 tls_type
= GOT_TLS_IE
;
1091 case R_390_TLS_GOTIE12
:
1092 case R_390_TLS_GOTIE20
:
1093 case R_390_TLS_IEENT
:
1094 tls_type
= GOT_TLS_IE_NLT
;
1100 h
->got
.refcount
+= 1;
1101 old_tls_type
= elf_s390_hash_entry(h
)->tls_type
;
1105 local_got_refcounts
[r_symndx
] += 1;
1106 old_tls_type
= elf_s390_local_got_tls_type (abfd
) [r_symndx
];
1108 /* If a TLS symbol is accessed using IE at least once,
1109 there is no point to use dynamic model for it. */
1110 if (old_tls_type
!= tls_type
&& old_tls_type
!= GOT_UNKNOWN
)
1112 if (old_tls_type
== GOT_NORMAL
|| tls_type
== GOT_NORMAL
)
1115 /* xgettext:c-format */
1116 (_("%pB: `%s' accessed both as normal and thread local symbol"),
1117 abfd
, h
->root
.root
.string
);
1120 if (old_tls_type
> tls_type
)
1121 tls_type
= old_tls_type
;
1124 if (old_tls_type
!= tls_type
)
1127 elf_s390_hash_entry (h
)->tls_type
= tls_type
;
1129 elf_s390_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
1132 if (r_type
!= R_390_TLS_IE64
)
1136 case R_390_TLS_LE64
:
1137 /* For static linking and executables this reloc will be
1138 calculated at linktime otherwise a TLS_TPOFF runtime
1139 reloc will be generated. */
1140 if (r_type
== R_390_TLS_LE64
&& bfd_link_pie (info
))
1143 if (!bfd_link_pic (info
))
1145 info
->flags
|= DF_STATIC_TLS
;
1159 if (h
!= NULL
&& bfd_link_executable (info
))
1161 /* If this reloc is in a read-only section, we might
1162 need a copy reloc. We can't check reliably at this
1163 stage whether the section is read-only, as input
1164 sections have not yet been mapped to output sections.
1165 Tentatively set the flag for now, and correct in
1166 adjust_dynamic_symbol. */
1169 if (!bfd_link_pic (info
))
1171 /* We may need a .plt entry if the function this reloc
1172 refers to is in a shared lib. */
1173 h
->plt
.refcount
+= 1;
1177 /* If we are creating a shared library, and this is a reloc
1178 against a global symbol, or a non PC relative reloc
1179 against a local symbol, then we need to copy the reloc
1180 into the shared library. However, if we are linking with
1181 -Bsymbolic, we do not need to copy a reloc against a
1182 global symbol which is defined in an object we are
1183 including in the link (i.e., DEF_REGULAR is set). At
1184 this point we have not seen all the input files, so it is
1185 possible that DEF_REGULAR is not set now but will be set
1186 later (it is never cleared). In case of a weak definition,
1187 DEF_REGULAR may be cleared later by a strong definition in
1188 a shared library. We account for that possibility below by
1189 storing information in the relocs_copied field of the hash
1190 table entry. A similar situation occurs when creating
1191 shared libraries and symbol visibility changes render the
1194 If on the other hand, we are creating an executable, we
1195 may need to keep relocations for symbols satisfied by a
1196 dynamic library if we manage to avoid copy relocs for the
1198 if ((bfd_link_pic (info
)
1199 && (sec
->flags
& SEC_ALLOC
) != 0
1200 && ((ELF64_R_TYPE (rel
->r_info
) != R_390_PC16
1201 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC12DBL
1202 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC16DBL
1203 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC24DBL
1204 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC32
1205 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC32DBL
1206 && ELF64_R_TYPE (rel
->r_info
) != R_390_PC64
)
1208 && (! SYMBOLIC_BIND (info
, h
)
1209 || h
->root
.type
== bfd_link_hash_defweak
1210 || !h
->def_regular
))))
1211 || (ELIMINATE_COPY_RELOCS
1212 && !bfd_link_pic (info
)
1213 && (sec
->flags
& SEC_ALLOC
) != 0
1215 && (h
->root
.type
== bfd_link_hash_defweak
1216 || !h
->def_regular
)))
1218 struct elf_dyn_relocs
*p
;
1219 struct elf_dyn_relocs
**head
;
1221 /* We must copy these reloc types into the output file.
1222 Create a reloc section in dynobj and make room for
1226 if (htab
->elf
.dynobj
== NULL
)
1227 htab
->elf
.dynobj
= abfd
;
1229 sreloc
= _bfd_elf_make_dynamic_reloc_section
1230 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
1236 /* If this is a global symbol, we count the number of
1237 relocations we need for this symbol. */
1240 head
= &h
->dyn_relocs
;
1244 /* Track dynamic relocs needed for local syms too.
1245 We really need local syms available to do this
1250 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
1255 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
1259 vpp
= &elf_section_data (s
)->local_dynrel
;
1260 head
= (struct elf_dyn_relocs
**) vpp
;
1264 if (p
== NULL
|| p
->sec
!= sec
)
1266 size_t amt
= sizeof *p
;
1267 p
= ((struct elf_dyn_relocs
*)
1268 bfd_alloc (htab
->elf
.dynobj
, amt
));
1279 if (ELF64_R_TYPE (rel
->r_info
) == R_390_PC16
1280 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC12DBL
1281 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC16DBL
1282 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC16DBL
1283 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC32
1284 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC32DBL
1285 || ELF64_R_TYPE (rel
->r_info
) == R_390_PC64
)
1290 /* This relocation describes the C++ object vtable hierarchy.
1291 Reconstruct it for later use during GC. */
1292 case R_390_GNU_VTINHERIT
:
1293 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1297 /* This relocation describes which C++ vtable entries are actually
1298 used. Record for later use during GC. */
1299 case R_390_GNU_VTENTRY
:
1300 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1312 /* Return the section that should be marked against GC for a given
1316 elf_s390_gc_mark_hook (asection
*sec
,
1317 struct bfd_link_info
*info
,
1318 Elf_Internal_Rela
*rel
,
1319 struct elf_link_hash_entry
*h
,
1320 Elf_Internal_Sym
*sym
)
1323 switch (ELF64_R_TYPE (rel
->r_info
))
1325 case R_390_GNU_VTINHERIT
:
1326 case R_390_GNU_VTENTRY
:
1330 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1333 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1334 entry but we found we will not create any. Called when we find we will
1335 not have any PLT for this symbol, by for example
1336 elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1337 or elf_s390_size_dynamic_sections if no dynamic sections will be
1338 created (we're only linking static objects). */
1341 elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry
*h
)
1343 if (h
->elf
.root
.type
== bfd_link_hash_warning
)
1344 h
= (struct elf_s390_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
1346 if (h
->gotplt_refcount
<= 0)
1349 /* We simply add the number of gotplt references to the number
1350 * of got references for this symbol. */
1351 h
->elf
.got
.refcount
+= h
->gotplt_refcount
;
1352 h
->gotplt_refcount
= -1;
1355 /* Adjust a symbol defined by a dynamic object and referenced by a
1356 regular object. The current definition is in some section of the
1357 dynamic object, but we're not including those sections. We have to
1358 change the definition to something the rest of the link can
1362 elf_s390_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1363 struct elf_link_hash_entry
*h
)
1365 struct elf_s390_link_hash_table
*htab
;
1368 /* STT_GNU_IFUNC symbol must go through PLT. */
1369 if (s390_is_ifunc_symbol_p (h
))
1371 /* All local STT_GNU_IFUNC references must be treated as local
1372 calls via local PLT. */
1373 if (h
->ref_regular
&& SYMBOL_CALLS_LOCAL (info
, h
))
1375 bfd_size_type pc_count
= 0, count
= 0;
1376 struct elf_dyn_relocs
**pp
;
1377 struct elf_dyn_relocs
*p
;
1379 for (pp
= &h
->dyn_relocs
; (p
= *pp
) != NULL
; )
1381 pc_count
+= p
->pc_count
;
1382 p
->count
-= p
->pc_count
;
1391 if (pc_count
|| count
)
1395 if (h
->plt
.refcount
<= 0)
1396 h
->plt
.refcount
= 1;
1398 h
->plt
.refcount
+= 1;
1402 if (h
->plt
.refcount
<= 0)
1404 h
->plt
.offset
= (bfd_vma
) -1;
1410 /* If this is a function, put it in the procedure linkage table. We
1411 will fill in the contents of the procedure linkage table later
1412 (although we could actually do it here). */
1413 if (h
->type
== STT_FUNC
1416 if (h
->plt
.refcount
<= 0
1417 || SYMBOL_CALLS_LOCAL (info
, h
)
1418 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
1420 /* This case can occur if we saw a PLT32 reloc in an input
1421 file, but the symbol was never referred to by a dynamic
1422 object, or if all references were garbage collected. In
1423 such a case, we don't actually need to build a procedure
1424 linkage table, and we can just do a PC32 reloc instead. */
1425 h
->plt
.offset
= (bfd_vma
) -1;
1427 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1433 /* It's possible that we incorrectly decided a .plt reloc was
1434 needed for an R_390_PC32 reloc to a non-function sym in
1435 check_relocs. We can't decide accurately between function and
1436 non-function syms in check-relocs; Objects loaded later in
1437 the link may change h->type. So fix it now. */
1438 h
->plt
.offset
= (bfd_vma
) -1;
1440 /* If this is a weak symbol, and there is a real definition, the
1441 processor independent code will have arranged for us to see the
1442 real definition first, and we can just use the same value. */
1443 if (h
->is_weakalias
)
1445 struct elf_link_hash_entry
*def
= weakdef (h
);
1446 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
1447 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
1448 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
1449 if (ELIMINATE_COPY_RELOCS
|| info
->nocopyreloc
)
1450 h
->non_got_ref
= def
->non_got_ref
;
1454 /* This is a reference to a symbol defined by a dynamic object which
1455 is not a function. */
1457 /* If we are creating a shared library, we must presume that the
1458 only references to the symbol are via the global offset table.
1459 For such cases we need not do anything here; the relocations will
1460 be handled correctly by relocate_section. */
1461 if (bfd_link_pic (info
))
1464 /* If there are no references to this symbol that do not use the
1465 GOT, we don't need to generate a copy reloc. */
1466 if (!h
->non_got_ref
)
1469 /* If -z nocopyreloc was given, we won't generate them either. */
1470 if (info
->nocopyreloc
)
1476 /* If we don't find any dynamic relocs in read-only sections, then
1477 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1478 if (ELIMINATE_COPY_RELOCS
&& !_bfd_elf_readonly_dynrelocs (h
))
1484 /* We must allocate the symbol in our .dynbss section, which will
1485 become part of the .bss section of the executable. There will be
1486 an entry for this symbol in the .dynsym section. The dynamic
1487 object will contain position independent code, so all references
1488 from the dynamic object to this symbol will go through the global
1489 offset table. The dynamic linker will use the .dynsym entry to
1490 determine the address it must put in the global offset table, so
1491 both the dynamic object and the regular object will refer to the
1492 same memory location for the variable. */
1494 htab
= elf_s390_hash_table (info
);
1498 /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1499 copy the initial value out of the dynamic object and into the
1500 runtime process image. */
1501 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
1503 s
= htab
->elf
.sdynrelro
;
1504 srel
= htab
->elf
.sreldynrelro
;
1508 s
= htab
->elf
.sdynbss
;
1509 srel
= htab
->elf
.srelbss
;
1511 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
1513 srel
->size
+= sizeof (Elf64_External_Rela
);
1517 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
1520 /* Allocate space in .plt, .got and associated reloc sections for
1524 allocate_dynrelocs (struct elf_link_hash_entry
*h
,
1527 struct bfd_link_info
*info
;
1528 struct elf_s390_link_hash_table
*htab
;
1529 struct elf_dyn_relocs
*p
;
1531 if (h
->root
.type
== bfd_link_hash_indirect
)
1534 info
= (struct bfd_link_info
*) inf
;
1535 htab
= elf_s390_hash_table (info
);
1539 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1540 here if it is defined and referenced in a non-shared object. */
1541 if (s390_is_ifunc_symbol_p (h
) && h
->def_regular
)
1542 return s390_elf_allocate_ifunc_dyn_relocs (info
, h
);
1543 else if (htab
->elf
.dynamic_sections_created
1544 && h
->plt
.refcount
> 0)
1546 /* Make sure this symbol is output as a dynamic symbol.
1547 Undefined weak syms won't yet be marked as dynamic. */
1548 if (h
->dynindx
== -1
1549 && !h
->forced_local
)
1551 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1555 if (bfd_link_pic (info
)
1556 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
1558 asection
*s
= htab
->elf
.splt
;
1560 /* If this is the first .plt entry, make room for the special
1563 s
->size
+= PLT_FIRST_ENTRY_SIZE
;
1565 h
->plt
.offset
= s
->size
;
1567 /* If this symbol is not defined in a regular file, and we are
1568 not generating a shared library, then set the symbol to this
1569 location in the .plt. This is required to make function
1570 pointers compare as equal between the normal executable and
1571 the shared library. */
1572 if (! bfd_link_pic (info
)
1575 h
->root
.u
.def
.section
= s
;
1576 h
->root
.u
.def
.value
= h
->plt
.offset
;
1579 /* Make room for this entry. */
1580 s
->size
+= PLT_ENTRY_SIZE
;
1582 /* We also need to make an entry in the .got.plt section. */
1583 htab
->elf
.sgotplt
->size
+= GOT_ENTRY_SIZE
;
1585 /* We also need to make an entry in the .rela.plt section. */
1586 htab
->elf
.srelplt
->size
+= sizeof (Elf64_External_Rela
);
1590 h
->plt
.offset
= (bfd_vma
) -1;
1592 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1597 h
->plt
.offset
= (bfd_vma
) -1;
1599 elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry
*) h
);
1602 /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1603 the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1604 to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1605 we can save the dynamic TLS relocation. */
1606 if (h
->got
.refcount
> 0
1607 && !bfd_link_pic (info
)
1609 && elf_s390_hash_entry(h
)->tls_type
>= GOT_TLS_IE
)
1611 if (elf_s390_hash_entry(h
)->tls_type
== GOT_TLS_IE_NLT
)
1612 /* For the GOTIE access without a literal pool entry the offset has
1613 to be stored somewhere. The immediate value in the instruction
1614 is not bit enough so the value is stored in the got. */
1616 h
->got
.offset
= htab
->elf
.sgot
->size
;
1617 htab
->elf
.sgot
->size
+= GOT_ENTRY_SIZE
;
1620 h
->got
.offset
= (bfd_vma
) -1;
1622 else if (h
->got
.refcount
> 0)
1626 int tls_type
= elf_s390_hash_entry(h
)->tls_type
;
1628 /* Make sure this symbol is output as a dynamic symbol.
1629 Undefined weak syms won't yet be marked as dynamic. */
1630 if (h
->dynindx
== -1
1631 && !h
->forced_local
)
1633 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1638 h
->got
.offset
= s
->size
;
1639 s
->size
+= GOT_ENTRY_SIZE
;
1640 /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1641 if (tls_type
== GOT_TLS_GD
)
1642 s
->size
+= GOT_ENTRY_SIZE
;
1643 dyn
= htab
->elf
.dynamic_sections_created
;
1644 /* R_390_TLS_IE64 needs one dynamic relocation,
1645 R_390_TLS_GD64 needs one if local symbol and two if global. */
1646 if ((tls_type
== GOT_TLS_GD
&& h
->dynindx
== -1)
1647 || tls_type
>= GOT_TLS_IE
)
1648 htab
->elf
.srelgot
->size
+= sizeof (Elf64_External_Rela
);
1649 else if (tls_type
== GOT_TLS_GD
)
1650 htab
->elf
.srelgot
->size
+= 2 * sizeof (Elf64_External_Rela
);
1651 else if (!UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)
1652 && (bfd_link_pic (info
)
1653 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
1654 htab
->elf
.srelgot
->size
+= sizeof (Elf64_External_Rela
);
1657 h
->got
.offset
= (bfd_vma
) -1;
1659 if (h
->dyn_relocs
== NULL
)
1662 /* In the shared -Bsymbolic case, discard space allocated for
1663 dynamic pc-relative relocs against symbols which turn out to be
1664 defined in regular objects. For the normal shared case, discard
1665 space for pc-relative relocs that have become local due to symbol
1666 visibility changes. */
1668 if (bfd_link_pic (info
))
1670 if (SYMBOL_CALLS_LOCAL (info
, h
))
1672 struct elf_dyn_relocs
**pp
;
1674 for (pp
= &h
->dyn_relocs
; (p
= *pp
) != NULL
; )
1676 p
->count
-= p
->pc_count
;
1685 /* Also discard relocs on undefined weak syms with non-default
1687 if (h
->dyn_relocs
!= NULL
1688 && h
->root
.type
== bfd_link_hash_undefweak
)
1690 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
1691 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
1692 h
->dyn_relocs
= NULL
;
1694 /* Make sure undefined weak symbols are output as a dynamic
1696 else if (h
->dynindx
== -1
1697 && !h
->forced_local
)
1699 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1704 else if (ELIMINATE_COPY_RELOCS
)
1706 /* For the non-shared case, discard space for relocs against
1707 symbols which turn out to need copy relocs or are not
1713 || (htab
->elf
.dynamic_sections_created
1714 && (h
->root
.type
== bfd_link_hash_undefweak
1715 || h
->root
.type
== bfd_link_hash_undefined
))))
1717 /* Make sure this symbol is output as a dynamic symbol.
1718 Undefined weak syms won't yet be marked as dynamic. */
1719 if (h
->dynindx
== -1
1720 && !h
->forced_local
)
1722 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1726 /* If that succeeded, we know we'll be keeping all the
1728 if (h
->dynindx
!= -1)
1732 h
->dyn_relocs
= NULL
;
1737 /* Finally, allocate space. */
1738 for (p
= h
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1740 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
1741 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
1747 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
1748 read-only sections. */
1751 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
1755 if (h
->root
.type
== bfd_link_hash_indirect
)
1758 sec
= _bfd_elf_readonly_dynrelocs (h
);
1761 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
1763 info
->flags
|= DF_TEXTREL
;
1764 info
->callbacks
->minfo
1765 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
1766 sec
->owner
, h
->root
.root
.string
, sec
);
1768 /* Not an error, just cut short the traversal. */
1774 /* Set the sizes of the dynamic sections. */
1777 elf_s390_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
1778 struct bfd_link_info
*info
)
1780 struct elf_s390_link_hash_table
*htab
;
1786 htab
= elf_s390_hash_table (info
);
1790 dynobj
= htab
->elf
.dynobj
;
1794 if (htab
->elf
.dynamic_sections_created
)
1796 /* Set the contents of the .interp section to the interpreter. */
1797 if (bfd_link_executable (info
) && !info
->nointerp
)
1799 s
= bfd_get_linker_section (dynobj
, ".interp");
1802 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1803 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1807 if (htab
->elf
.sgot
&& s390_gotplt_after_got_p (info
))
1809 /* _bfd_elf_create_got_section adds the got header size always
1810 to .got.plt but we need it in .got if this section comes
1812 htab
->elf
.sgot
->size
+= 3 * GOT_ENTRY_SIZE
;
1813 htab
->elf
.sgotplt
->size
-= 3 * GOT_ENTRY_SIZE
;
1815 /* Make the _GLOBAL_OFFSET_TABLE_ symbol point to the .got
1816 instead of .got.plt. */
1817 htab
->elf
.hgot
->root
.u
.def
.section
= htab
->elf
.sgot
;
1818 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
1821 /* Set up .got offsets for local syms, and space for local dynamic
1823 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
1825 bfd_signed_vma
*local_got
;
1826 bfd_signed_vma
*end_local_got
;
1827 char *local_tls_type
;
1828 bfd_size_type locsymcount
;
1829 Elf_Internal_Shdr
*symtab_hdr
;
1831 struct plt_entry
*local_plt
;
1834 if (! is_s390_elf (ibfd
))
1837 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
1839 struct elf_dyn_relocs
*p
;
1841 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
1843 if (!bfd_is_abs_section (p
->sec
)
1844 && bfd_is_abs_section (p
->sec
->output_section
))
1846 /* Input section has been discarded, either because
1847 it is a copy of a linkonce section or due to
1848 linker script /DISCARD/, so we'll be discarding
1851 else if (p
->count
!= 0)
1853 srela
= elf_section_data (p
->sec
)->sreloc
;
1854 srela
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
1855 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
1856 info
->flags
|= DF_TEXTREL
;
1861 local_got
= elf_local_got_refcounts (ibfd
);
1865 symtab_hdr
= &elf_symtab_hdr (ibfd
);
1866 locsymcount
= symtab_hdr
->sh_info
;
1867 end_local_got
= local_got
+ locsymcount
;
1868 local_tls_type
= elf_s390_local_got_tls_type (ibfd
);
1870 srela
= htab
->elf
.srelgot
;
1871 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
1875 *local_got
= s
->size
;
1876 s
->size
+= GOT_ENTRY_SIZE
;
1877 if (*local_tls_type
== GOT_TLS_GD
)
1878 s
->size
+= GOT_ENTRY_SIZE
;
1879 if (bfd_link_pic (info
))
1880 srela
->size
+= sizeof (Elf64_External_Rela
);
1883 *local_got
= (bfd_vma
) -1;
1886 local_plt
= elf_s390_local_plt (ibfd
);
1887 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
1889 if (local_plt
[i
].plt
.refcount
> 0)
1891 local_plt
[i
].plt
.offset
= htab
->elf
.iplt
->size
;
1892 htab
->elf
.iplt
->size
+= PLT_ENTRY_SIZE
;
1893 htab
->elf
.igotplt
->size
+= GOT_ENTRY_SIZE
;
1894 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
1897 local_plt
[i
].plt
.offset
= (bfd_vma
) -1;
1901 if (htab
->tls_ldm_got
.refcount
> 0)
1903 /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
1905 htab
->tls_ldm_got
.offset
= htab
->elf
.sgot
->size
;
1906 htab
->elf
.sgot
->size
+= 2 * GOT_ENTRY_SIZE
;
1907 htab
->elf
.srelgot
->size
+= sizeof (Elf64_External_Rela
);
1910 htab
->tls_ldm_got
.offset
= -1;
1912 /* Allocate global sym .plt and .got entries, and space for global
1913 sym dynamic relocs. */
1914 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
1916 /* We now have determined the sizes of the various dynamic sections.
1917 Allocate memory for them. */
1919 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
1921 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
1924 if (s
== htab
->elf
.splt
1925 || s
== htab
->elf
.sgot
1926 || s
== htab
->elf
.sgotplt
1927 || s
== htab
->elf
.sdynbss
1928 || s
== htab
->elf
.sdynrelro
1929 || s
== htab
->elf
.iplt
1930 || s
== htab
->elf
.igotplt
1931 || s
== htab
->irelifunc
)
1933 /* Strip this section if we don't need it; see the
1936 else if (CONST_STRNEQ (bfd_section_name (s
), ".rela"))
1938 if (s
->size
!= 0 && s
!= htab
->elf
.srelplt
)
1941 /* We use the reloc_count field as a counter if we need
1942 to copy relocs into the output file. */
1947 /* It's not one of our sections, so don't allocate space. */
1953 /* If we don't need this section, strip it from the
1954 output file. This is to handle .rela.bss and
1955 .rela.plt. We must create it in
1956 create_dynamic_sections, because it must be created
1957 before the linker maps input sections to output
1958 sections. The linker does that before
1959 adjust_dynamic_symbol is called, and it is that
1960 function which decides whether anything needs to go
1961 into these sections. */
1963 s
->flags
|= SEC_EXCLUDE
;
1967 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
1970 /* Allocate memory for the section contents. We use bfd_zalloc
1971 here in case unused entries are not reclaimed before the
1972 section's contents are written out. This should not happen,
1973 but this way if it does, we get a R_390_NONE reloc instead
1975 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
1976 if (s
->contents
== NULL
)
1980 if (htab
->elf
.dynamic_sections_created
)
1982 /* Add some entries to the .dynamic section. We fill in the
1983 values later, in elf_s390_finish_dynamic_sections, but we
1984 must add the entries now so that we get the correct size for
1985 the .dynamic section. The DT_DEBUG entry is filled in by the
1986 dynamic linker and used by the debugger. */
1987 #define add_dynamic_entry(TAG, VAL) \
1988 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
1990 if (bfd_link_executable (info
))
1992 if (!add_dynamic_entry (DT_DEBUG
, 0))
1996 if (htab
->elf
.splt
->size
!= 0)
1998 if (!add_dynamic_entry (DT_PLTGOT
, 0)
1999 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
2000 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2001 || !add_dynamic_entry (DT_JMPREL
, 0))
2007 if (!add_dynamic_entry (DT_RELA
, 0)
2008 || !add_dynamic_entry (DT_RELASZ
, 0)
2009 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
2012 /* If any dynamic relocs apply to a read-only section,
2013 then we need a DT_TEXTREL entry. */
2014 if ((info
->flags
& DF_TEXTREL
) == 0)
2015 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
2017 if ((info
->flags
& DF_TEXTREL
) != 0)
2019 if (!add_dynamic_entry (DT_TEXTREL
, 0))
2024 #undef add_dynamic_entry
2029 /* Return the base VMA address which should be subtracted from real addresses
2030 when resolving @dtpoff relocation.
2031 This is PT_TLS segment p_vaddr. */
2034 dtpoff_base (struct bfd_link_info
*info
)
2036 /* If tls_sec is NULL, we should have signalled an error already. */
2037 if (elf_hash_table (info
)->tls_sec
== NULL
)
2039 return elf_hash_table (info
)->tls_sec
->vma
;
2042 /* Return the relocation value for @tpoff relocation
2043 if STT_TLS virtual address is ADDRESS. */
2046 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
2048 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
2050 /* If tls_sec is NULL, we should have signalled an error already. */
2051 if (htab
->tls_sec
== NULL
)
2053 return htab
->tls_size
+ htab
->tls_sec
->vma
- address
;
2056 /* Complain if TLS instruction relocation is against an invalid
2060 invalid_tls_insn (bfd
*input_bfd
,
2061 asection
*input_section
,
2062 Elf_Internal_Rela
*rel
)
2064 reloc_howto_type
*howto
;
2066 howto
= elf_howto_table
+ ELF64_R_TYPE (rel
->r_info
);
2068 /* xgettext:c-format */
2069 (_("%pB(%pA+%#" PRIx64
"): invalid instruction for TLS relocation %s"),
2072 (uint64_t) rel
->r_offset
,
2074 bfd_set_error (bfd_error_bad_value
);
2077 /* Relocate a 390 ELF section. */
2080 elf_s390_relocate_section (bfd
*output_bfd
,
2081 struct bfd_link_info
*info
,
2083 asection
*input_section
,
2085 Elf_Internal_Rela
*relocs
,
2086 Elf_Internal_Sym
*local_syms
,
2087 asection
**local_sections
)
2089 struct elf_s390_link_hash_table
*htab
;
2090 Elf_Internal_Shdr
*symtab_hdr
;
2091 struct elf_link_hash_entry
**sym_hashes
;
2092 bfd_vma
*local_got_offsets
;
2093 Elf_Internal_Rela
*rel
;
2094 Elf_Internal_Rela
*relend
;
2096 if (!is_s390_elf (input_bfd
))
2098 bfd_set_error (bfd_error_wrong_format
);
2102 htab
= elf_s390_hash_table (info
);
2106 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
2107 sym_hashes
= elf_sym_hashes (input_bfd
);
2108 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2111 relend
= relocs
+ input_section
->reloc_count
;
2112 for (; rel
< relend
; rel
++)
2114 unsigned int r_type
;
2115 reloc_howto_type
*howto
;
2116 unsigned long r_symndx
;
2117 struct elf_link_hash_entry
*h
;
2118 Elf_Internal_Sym
*sym
;
2122 bfd_boolean unresolved_reloc
;
2123 bfd_reloc_status_type r
;
2125 bfd_boolean resolved_to_zero
;
2127 r_type
= ELF64_R_TYPE (rel
->r_info
);
2128 if (r_type
== (int) R_390_GNU_VTINHERIT
2129 || r_type
== (int) R_390_GNU_VTENTRY
)
2131 if (r_type
>= (int) R_390_max
)
2133 bfd_set_error (bfd_error_bad_value
);
2137 howto
= elf_howto_table
+ r_type
;
2138 r_symndx
= ELF64_R_SYM (rel
->r_info
);
2143 unresolved_reloc
= FALSE
;
2144 if (r_symndx
< symtab_hdr
->sh_info
)
2146 sym
= local_syms
+ r_symndx
;
2147 sec
= local_sections
[r_symndx
];
2149 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
2151 struct plt_entry
*local_plt
= elf_s390_local_plt (input_bfd
);
2152 if (local_plt
== NULL
)
2155 /* Address of the PLT slot. */
2156 relocation
= (htab
->elf
.iplt
->output_section
->vma
2157 + htab
->elf
.iplt
->output_offset
2158 + local_plt
[r_symndx
].plt
.offset
);
2162 case R_390_PLTOFF16
:
2163 case R_390_PLTOFF32
:
2164 case R_390_PLTOFF64
:
2165 relocation
-= s390_got_pointer (info
);
2167 case R_390_GOTPLT12
:
2168 case R_390_GOTPLT16
:
2169 case R_390_GOTPLT20
:
2170 case R_390_GOTPLT32
:
2171 case R_390_GOTPLT64
:
2172 case R_390_GOTPLTENT
:
2180 /* Write the PLT slot address into the GOT slot. */
2181 bfd_put_64 (output_bfd
, relocation
,
2182 htab
->elf
.sgot
->contents
+
2183 local_got_offsets
[r_symndx
]);
2184 relocation
= (local_got_offsets
[r_symndx
] +
2185 s390_got_offset (info
));
2187 if (r_type
== R_390_GOTENT
|| r_type
== R_390_GOTPLTENT
)
2188 relocation
+= s390_got_pointer (info
);
2194 /* The output section is needed later in
2195 finish_dynamic_section when creating the dynamic
2197 local_plt
[r_symndx
].sec
= sec
;
2201 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2205 bfd_boolean warned ATTRIBUTE_UNUSED
;
2206 bfd_boolean ignored ATTRIBUTE_UNUSED
;
2208 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2209 r_symndx
, symtab_hdr
, sym_hashes
,
2211 unresolved_reloc
, warned
, ignored
);
2214 if (sec
!= NULL
&& discarded_section (sec
))
2215 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2216 rel
, 1, relend
, howto
, 0, contents
);
2218 if (bfd_link_relocatable (info
))
2221 resolved_to_zero
= (h
!= NULL
2222 && UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
2226 case R_390_GOTPLT12
:
2227 case R_390_GOTPLT16
:
2228 case R_390_GOTPLT20
:
2229 case R_390_GOTPLT32
:
2230 case R_390_GOTPLT64
:
2231 case R_390_GOTPLTENT
:
2232 /* There are three cases for a GOTPLT relocation. 1) The
2233 relocation is against the jump slot entry of a plt that
2234 will get emitted to the output file. 2) The relocation
2235 is against the jump slot of a plt entry that has been
2236 removed. elf_s390_adjust_gotplt has created a GOT entry
2237 as replacement. 3) The relocation is against a local symbol.
2238 Cases 2) and 3) are the same as the GOT relocation code
2239 so we just have to test for case 1 and fall through for
2241 if (h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
2245 if (s390_is_ifunc_symbol_p (h
))
2247 /* Entry indices of .iplt and .igot.plt match
2248 1:1. No magic PLT first entry here. */
2249 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
;
2250 relocation
= (plt_index
* GOT_ENTRY_SIZE
2251 + s390_gotplt_offset (info
)
2252 + htab
->elf
.igotplt
->output_offset
);
2256 plt_index
= ((h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
)
2259 relocation
= (plt_index
* GOT_ENTRY_SIZE
2260 + s390_gotplt_offset (info
));
2262 if (r_type
== R_390_GOTPLTENT
)
2263 relocation
+= s390_got_pointer (info
);
2264 unresolved_reloc
= FALSE
;
2275 /* Relocation is to the entry for this symbol in the global
2277 if (htab
->elf
.sgot
== NULL
)
2284 off
= h
->got
.offset
;
2285 dyn
= htab
->elf
.dynamic_sections_created
;
2287 if (s390_is_ifunc_symbol_p (h
))
2289 BFD_ASSERT (h
->plt
.offset
!= (bfd_vma
) -1);
2290 if (off
== (bfd_vma
)-1)
2292 /* No explicit GOT usage so redirect to the
2294 relocation
= (s390_gotplt_offset (info
)
2295 + htab
->elf
.igotplt
->output_offset
2296 + (h
->plt
.offset
/ PLT_ENTRY_SIZE
2299 /* For @GOTENT the relocation is against the offset between
2300 the instruction and the symbols entry in the GOT and not
2301 between the start of the GOT and the symbols entry. We
2302 add the vma of the GOT to get the correct value. */
2303 if (r_type
== R_390_GOTENT
|| r_type
== R_390_GOTPLTENT
)
2304 relocation
+= s390_got_pointer (info
);
2310 /* Explicit GOT slots must contain the address
2311 of the PLT slot. This will be handled in
2312 finish_dynamic_symbol. */
2315 else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2316 bfd_link_pic (info
),
2318 || (bfd_link_pic (info
)
2319 && SYMBOL_REFERENCES_LOCAL (info
, h
))
2320 || resolved_to_zero
)
2322 Elf_Internal_Sym
*isym
;
2325 /* This is actually a static link, or it is a
2326 -Bsymbolic link and the symbol is defined
2327 locally, or the symbol was forced to be local
2328 because of a version file. We must initialize
2329 this entry in the global offset table. Since the
2330 offset must always be a multiple of 2, we use the
2331 least significant bit to record whether we have
2332 initialized it already.
2334 When doing a dynamic link, we create a .rel.got
2335 relocation entry to initialize the value. This
2336 is done in the finish_dynamic_symbol routine. */
2341 bfd_put_64 (output_bfd
, relocation
,
2342 htab
->elf
.sgot
->contents
+ off
);
2346 /* When turning a GOT slot dereference into a direct
2347 reference using larl we have to make sure that
2348 the symbol is 1. properly aligned and 2. it is no
2349 ABS symbol or will become one. */
2351 && bfd_link_pic (info
)
2352 && SYMBOL_REFERENCES_LOCAL (info
, h
))
2353 /* lgrl rx,sym@GOTENT -> larl rx, sym */
2354 && ((r_type
== R_390_GOTENT
2355 && (bfd_get_16 (input_bfd
,
2356 contents
+ rel
->r_offset
- 2)
2357 & 0xff0f) == 0xc408)
2358 /* lg rx, sym@GOT(r12) -> larl rx, sym */
2359 || (r_type
== R_390_GOT20
2360 && (bfd_get_32 (input_bfd
,
2361 contents
+ rel
->r_offset
- 2)
2362 & 0xff00f000) == 0xe300c000
2363 && bfd_get_8 (input_bfd
,
2364 contents
+ rel
->r_offset
+ 3) == 0x04))
2365 && (isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
2366 input_bfd
, r_symndx
))
2367 && isym
->st_shndx
!= SHN_ABS
2368 && h
!= htab
->elf
.hdynamic
2369 && h
!= htab
->elf
.hgot
2370 && h
!= htab
->elf
.hplt
2371 && !(isym
->st_value
& 1)
2372 && (sym_sec
= bfd_section_from_elf_index (input_bfd
,
2374 && sym_sec
->alignment_power
)
2376 unsigned short new_insn
=
2377 (0xc000 | (bfd_get_8 (input_bfd
,
2378 contents
+ rel
->r_offset
- 1) & 0xf0));
2379 bfd_put_16 (output_bfd
, new_insn
,
2380 contents
+ rel
->r_offset
- 2);
2381 r_type
= R_390_PC32DBL
;
2383 howto
= elf_howto_table
+ r_type
;
2384 relocation
= h
->root
.u
.def
.value
2385 + h
->root
.u
.def
.section
->output_section
->vma
2386 + h
->root
.u
.def
.section
->output_offset
;
2391 unresolved_reloc
= FALSE
;
2395 if (local_got_offsets
== NULL
)
2398 off
= local_got_offsets
[r_symndx
];
2400 /* The offset must always be a multiple of 8. We use
2401 the least significant bit to record whether we have
2402 already generated the necessary reloc. */
2407 bfd_put_64 (output_bfd
, relocation
,
2408 htab
->elf
.sgot
->contents
+ off
);
2410 if (bfd_link_pic (info
))
2413 Elf_Internal_Rela outrel
;
2416 s
= htab
->elf
.srelgot
;
2420 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
2421 + htab
->elf
.sgot
->output_offset
2423 outrel
.r_info
= ELF64_R_INFO (0, R_390_RELATIVE
);
2424 outrel
.r_addend
= relocation
;
2426 loc
+= s
->reloc_count
++ * sizeof (Elf64_External_Rela
);
2427 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2430 local_got_offsets
[r_symndx
] |= 1;
2434 if (off
>= (bfd_vma
) -2)
2437 relocation
= s390_got_offset (info
) + off
;
2439 /* For @GOTENT the relocation is against the offset between
2440 the instruction and the symbols entry in the GOT and not
2441 between the start of the GOT and the symbols entry. We
2442 add the vma of the GOT to get the correct value. */
2443 if ( r_type
== R_390_GOTENT
2444 || r_type
== R_390_GOTPLTENT
)
2445 relocation
+= s390_got_pointer (info
);
2449 case R_390_GOTOFF16
:
2450 case R_390_GOTOFF32
:
2451 case R_390_GOTOFF64
:
2452 /* Relocation is relative to the start of the global offset
2456 && s390_is_ifunc_symbol_p (h
)
2458 && !bfd_link_executable (info
))
2460 relocation
= (htab
->elf
.iplt
->output_section
->vma
2461 + htab
->elf
.iplt
->output_offset
2463 - s390_got_pointer (info
));
2467 relocation
-= s390_got_pointer (info
);
2471 case R_390_GOTPCDBL
:
2472 /* Use global offset table as symbol value. */
2473 relocation
= s390_got_pointer (info
);
2474 unresolved_reloc
= FALSE
;
2477 case R_390_PLT12DBL
:
2478 case R_390_PLT16DBL
:
2479 case R_390_PLT24DBL
:
2481 case R_390_PLT32DBL
:
2483 /* Relocation is to the entry for this symbol in the
2484 procedure linkage table. */
2486 /* Resolve a PLT32 reloc against a local symbol directly,
2487 without using the procedure linkage table. */
2491 if (h
->plt
.offset
== (bfd_vma
) -1
2492 || (htab
->elf
.splt
== NULL
&& !s390_is_ifunc_symbol_p (h
)))
2494 /* We didn't make a PLT entry for this symbol. This
2495 happens when statically linking PIC code, or when
2496 using -Bsymbolic. */
2499 if (s390_is_ifunc_symbol_p (h
))
2500 relocation
= (htab
->elf
.iplt
->output_section
->vma
2501 + htab
->elf
.iplt
->output_offset
2504 relocation
= (htab
->elf
.splt
->output_section
->vma
2505 + htab
->elf
.splt
->output_offset
2507 unresolved_reloc
= FALSE
;
2510 case R_390_PLTOFF16
:
2511 case R_390_PLTOFF32
:
2512 case R_390_PLTOFF64
:
2513 /* Relocation is to the entry for this symbol in the
2514 procedure linkage table relative to the start of the GOT. */
2516 /* For local symbols or if we didn't make a PLT entry for
2517 this symbol resolve the symbol directly. */
2519 || h
->plt
.offset
== (bfd_vma
) -1
2520 || (htab
->elf
.splt
== NULL
&& !s390_is_ifunc_symbol_p (h
)))
2522 relocation
-= s390_got_pointer (info
);
2526 if (s390_is_ifunc_symbol_p (h
))
2527 relocation
= (htab
->elf
.iplt
->output_section
->vma
2528 + htab
->elf
.iplt
->output_offset
2530 - s390_got_pointer (info
));
2532 relocation
= (htab
->elf
.splt
->output_section
->vma
2533 + htab
->elf
.splt
->output_offset
2535 - s390_got_pointer (info
));
2536 unresolved_reloc
= FALSE
;
2547 && bfd_link_pie (info
)
2550 _bfd_error_handler (_("%pB: `%s' non-PLT reloc for symbol defined "
2551 "in shared library and accessed "
2553 "(rebuild file with -fPIC ?)"),
2554 input_bfd
, h
->root
.root
.string
);
2555 bfd_set_error (bfd_error_bad_value
);
2558 /* The target of these relocs are instruction operands
2559 residing in read-only sections. We cannot emit a runtime
2562 && s390_is_ifunc_symbol_p (h
)
2564 && bfd_link_pic (info
))
2566 relocation
= (htab
->elf
.iplt
->output_section
->vma
2567 + htab
->elf
.iplt
->output_offset
2578 if ((input_section
->flags
& SEC_ALLOC
) == 0)
2582 && s390_is_ifunc_symbol_p (h
)
2585 if (!bfd_link_pic (info
))
2587 /* For a non-shared object the symbol will not
2588 change. Hence we can write the address of the
2589 target IPLT slot now. */
2590 relocation
= (htab
->elf
.iplt
->output_section
->vma
2591 + htab
->elf
.iplt
->output_offset
2597 /* For shared objects a runtime relocation is needed. */
2599 Elf_Internal_Rela outrel
;
2602 /* Need a dynamic relocation to get the real function
2604 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
2608 if (outrel
.r_offset
== (bfd_vma
) -1
2609 || outrel
.r_offset
== (bfd_vma
) -2)
2612 outrel
.r_offset
+= (input_section
->output_section
->vma
2613 + input_section
->output_offset
);
2615 if (h
->dynindx
== -1
2617 || bfd_link_executable (info
))
2619 /* This symbol is resolved locally. */
2620 outrel
.r_info
= ELF64_R_INFO (0, R_390_IRELATIVE
);
2621 outrel
.r_addend
= (h
->root
.u
.def
.value
2622 + h
->root
.u
.def
.section
->output_section
->vma
2623 + h
->root
.u
.def
.section
->output_offset
);
2627 outrel
.r_info
= ELF64_R_INFO (h
->dynindx
, r_type
);
2628 outrel
.r_addend
= 0;
2631 sreloc
= htab
->elf
.irelifunc
;
2632 elf_append_rela (output_bfd
, sreloc
, &outrel
);
2634 /* If this reloc is against an external symbol, we
2635 do not want to fiddle with the addend. Otherwise,
2636 we need to include the symbol value so that it
2637 becomes an addend for the dynamic reloc. For an
2638 internal symbol, we have updated addend. */
2643 if ((bfd_link_pic (info
)
2645 || (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2646 && !resolved_to_zero
)
2647 || h
->root
.type
!= bfd_link_hash_undefweak
)
2648 && ((r_type
!= R_390_PC16
2649 && r_type
!= R_390_PC12DBL
2650 && r_type
!= R_390_PC16DBL
2651 && r_type
!= R_390_PC24DBL
2652 && r_type
!= R_390_PC32
2653 && r_type
!= R_390_PC32DBL
2654 && r_type
!= R_390_PC64
)
2655 || !SYMBOL_CALLS_LOCAL (info
, h
)))
2656 || (ELIMINATE_COPY_RELOCS
2657 && !bfd_link_pic (info
)
2663 || h
->root
.type
== bfd_link_hash_undefweak
2664 || h
->root
.type
== bfd_link_hash_undefined
)))
2666 Elf_Internal_Rela outrel
;
2667 bfd_boolean skip
, relocate
;
2671 /* When generating a shared object, these relocations
2672 are copied into the output file to be resolved at run
2678 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2680 if (outrel
.r_offset
== (bfd_vma
) -1)
2682 else if (outrel
.r_offset
== (bfd_vma
) -2)
2683 skip
= TRUE
, relocate
= TRUE
;
2685 outrel
.r_offset
+= (input_section
->output_section
->vma
2686 + input_section
->output_offset
);
2689 memset (&outrel
, 0, sizeof outrel
);
2692 && (r_type
== R_390_PC16
2693 || r_type
== R_390_PC12DBL
2694 || r_type
== R_390_PC16DBL
2695 || r_type
== R_390_PC24DBL
2696 || r_type
== R_390_PC32
2697 || r_type
== R_390_PC32DBL
2698 || r_type
== R_390_PC64
2699 || !bfd_link_pic (info
)
2700 || !SYMBOLIC_BIND (info
, h
)
2701 || !h
->def_regular
))
2703 outrel
.r_info
= ELF64_R_INFO (h
->dynindx
, r_type
);
2704 outrel
.r_addend
= rel
->r_addend
;
2708 /* This symbol is local, or marked to become local. */
2709 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2710 if (r_type
== R_390_64
)
2713 outrel
.r_info
= ELF64_R_INFO (0, R_390_RELATIVE
);
2719 if (bfd_is_abs_section (sec
))
2721 else if (sec
== NULL
|| sec
->owner
== NULL
)
2723 bfd_set_error(bfd_error_bad_value
);
2730 osec
= sec
->output_section
;
2731 sindx
= elf_section_data (osec
)->dynindx
;
2735 osec
= htab
->elf
.text_index_section
;
2736 sindx
= elf_section_data (osec
)->dynindx
;
2738 BFD_ASSERT (sindx
!= 0);
2740 /* We are turning this relocation into one
2741 against a section symbol, so subtract out
2742 the output section's address but not the
2743 offset of the input section in the output
2745 outrel
.r_addend
-= osec
->vma
;
2747 outrel
.r_info
= ELF64_R_INFO (sindx
, r_type
);
2751 sreloc
= elf_section_data (input_section
)->sreloc
;
2755 loc
= sreloc
->contents
;
2756 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
2757 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2759 /* If this reloc is against an external symbol, we do
2760 not want to fiddle with the addend. Otherwise, we
2761 need to include the symbol value so that it becomes
2762 an addend for the dynamic reloc. */
2769 /* Relocations for tls literal pool entries. */
2770 case R_390_TLS_IE64
:
2771 if (bfd_link_pic (info
))
2773 Elf_Internal_Rela outrel
;
2777 outrel
.r_offset
= rel
->r_offset
2778 + input_section
->output_section
->vma
2779 + input_section
->output_offset
;
2780 outrel
.r_info
= ELF64_R_INFO (0, R_390_RELATIVE
);
2781 sreloc
= elf_section_data (input_section
)->sreloc
;
2784 loc
= sreloc
->contents
;
2785 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
2786 bfd_elf64_swap_reloc_out (output_bfd
, &outrel
, loc
);
2790 case R_390_TLS_GD64
:
2791 case R_390_TLS_GOTIE64
:
2792 r_type
= elf_s390_tls_transition (info
, r_type
, h
== NULL
);
2793 tls_type
= GOT_UNKNOWN
;
2794 if (h
== NULL
&& local_got_offsets
)
2795 tls_type
= elf_s390_local_got_tls_type (input_bfd
) [r_symndx
];
2798 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2799 if (!bfd_link_pic (info
) && h
->dynindx
== -1 && tls_type
>= GOT_TLS_IE
)
2800 r_type
= R_390_TLS_LE64
;
2802 if (r_type
== R_390_TLS_GD64
&& tls_type
>= GOT_TLS_IE
)
2803 r_type
= R_390_TLS_IE64
;
2805 if (r_type
== R_390_TLS_LE64
)
2807 /* This relocation gets optimized away by the local exec
2808 access optimization. */
2809 BFD_ASSERT (! unresolved_reloc
);
2810 bfd_put_64 (output_bfd
, -tpoff (info
, relocation
),
2811 contents
+ rel
->r_offset
);
2815 if (htab
->elf
.sgot
== NULL
)
2819 off
= h
->got
.offset
;
2822 if (local_got_offsets
== NULL
)
2825 off
= local_got_offsets
[r_symndx
];
2834 Elf_Internal_Rela outrel
;
2838 if (htab
->elf
.srelgot
== NULL
)
2841 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
2842 + htab
->elf
.sgot
->output_offset
+ off
);
2844 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
2845 if (r_type
== R_390_TLS_GD64
)
2846 dr_type
= R_390_TLS_DTPMOD
;
2848 dr_type
= R_390_TLS_TPOFF
;
2849 if (dr_type
== R_390_TLS_TPOFF
&& indx
== 0)
2850 outrel
.r_addend
= relocation
- dtpoff_base (info
);
2852 outrel
.r_addend
= 0;
2853 outrel
.r_info
= ELF64_R_INFO (indx
, dr_type
);
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
);
2859 if (r_type
== R_390_TLS_GD64
)
2863 BFD_ASSERT (! unresolved_reloc
);
2864 bfd_put_64 (output_bfd
,
2865 relocation
- dtpoff_base (info
),
2866 htab
->elf
.sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
2870 outrel
.r_info
= ELF64_R_INFO (indx
, R_390_TLS_DTPOFF
);
2871 outrel
.r_offset
+= GOT_ENTRY_SIZE
;
2872 outrel
.r_addend
= 0;
2873 htab
->elf
.srelgot
->reloc_count
++;
2874 loc
+= sizeof (Elf64_External_Rela
);
2875 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2882 local_got_offsets
[r_symndx
] |= 1;
2885 if (off
>= (bfd_vma
) -2)
2887 if (r_type
== ELF64_R_TYPE (rel
->r_info
))
2889 relocation
= htab
->elf
.sgot
->output_offset
+ off
;
2890 if (r_type
== R_390_TLS_IE64
|| r_type
== R_390_TLS_IEENT
)
2891 relocation
+= htab
->elf
.sgot
->output_section
->vma
;
2892 unresolved_reloc
= FALSE
;
2896 bfd_put_64 (output_bfd
, htab
->elf
.sgot
->output_offset
+ off
,
2897 contents
+ rel
->r_offset
);
2902 case R_390_TLS_GOTIE12
:
2903 case R_390_TLS_GOTIE20
:
2904 case R_390_TLS_IEENT
:
2907 if (local_got_offsets
== NULL
)
2909 off
= local_got_offsets
[r_symndx
];
2910 if (bfd_link_pic (info
))
2911 goto emit_tls_relocs
;
2915 off
= h
->got
.offset
;
2916 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
2917 if (bfd_link_pic (info
) || h
->dynindx
!= -1 || tls_type
< GOT_TLS_IE
)
2918 goto emit_tls_relocs
;
2921 if (htab
->elf
.sgot
== NULL
)
2924 BFD_ASSERT (! unresolved_reloc
);
2925 bfd_put_64 (output_bfd
, -tpoff (info
, relocation
),
2926 htab
->elf
.sgot
->contents
+ off
);
2927 relocation
= htab
->elf
.sgot
->output_offset
+ off
;
2928 if (r_type
== R_390_TLS_IEENT
)
2929 relocation
+= htab
->elf
.sgot
->output_section
->vma
;
2930 unresolved_reloc
= FALSE
;
2933 case R_390_TLS_LDM64
:
2934 if (! bfd_link_pic (info
))
2935 /* The literal pool entry this relocation refers to gets ignored
2936 by the optimized code of the local exec model. Do nothing
2937 and the value will turn out zero. */
2940 if (htab
->elf
.sgot
== NULL
)
2943 off
= htab
->tls_ldm_got
.offset
;
2948 Elf_Internal_Rela outrel
;
2951 if (htab
->elf
.srelgot
== NULL
)
2954 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
2955 + htab
->elf
.sgot
->output_offset
+ off
);
2957 bfd_put_64 (output_bfd
, 0,
2958 htab
->elf
.sgot
->contents
+ off
+ GOT_ENTRY_SIZE
);
2959 outrel
.r_info
= ELF64_R_INFO (0, R_390_TLS_DTPMOD
);
2960 outrel
.r_addend
= 0;
2961 loc
= htab
->elf
.srelgot
->contents
;
2962 loc
+= htab
->elf
.srelgot
->reloc_count
++
2963 * sizeof (Elf64_External_Rela
);
2964 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
2965 htab
->tls_ldm_got
.offset
|= 1;
2967 relocation
= htab
->elf
.sgot
->output_offset
+ off
;
2968 unresolved_reloc
= FALSE
;
2971 case R_390_TLS_LE64
:
2972 if (bfd_link_dll (info
))
2974 /* Linking a shared library with non-fpic code requires
2975 a R_390_TLS_TPOFF relocation. */
2976 Elf_Internal_Rela outrel
;
2981 outrel
.r_offset
= rel
->r_offset
2982 + input_section
->output_section
->vma
2983 + input_section
->output_offset
;
2984 if (h
!= NULL
&& h
->dynindx
!= -1)
2988 outrel
.r_info
= ELF64_R_INFO (indx
, R_390_TLS_TPOFF
);
2990 outrel
.r_addend
= relocation
- dtpoff_base (info
);
2992 outrel
.r_addend
= 0;
2993 sreloc
= elf_section_data (input_section
)->sreloc
;
2996 loc
= sreloc
->contents
;
2997 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
2998 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
3002 BFD_ASSERT (! unresolved_reloc
);
3003 bfd_put_64 (output_bfd
, -tpoff (info
, relocation
),
3004 contents
+ rel
->r_offset
);
3008 case R_390_TLS_LDO64
:
3009 if (bfd_link_pic (info
) || (input_section
->flags
& SEC_DEBUGGING
))
3010 relocation
-= dtpoff_base (info
);
3012 /* When converting LDO to LE, we must negate. */
3013 relocation
= -tpoff (info
, relocation
);
3016 /* Relocations for tls instructions. */
3017 case R_390_TLS_LOAD
:
3018 case R_390_TLS_GDCALL
:
3019 case R_390_TLS_LDCALL
:
3020 tls_type
= GOT_UNKNOWN
;
3021 if (h
== NULL
&& local_got_offsets
)
3022 tls_type
= elf_s390_local_got_tls_type (input_bfd
) [r_symndx
];
3024 tls_type
= elf_s390_hash_entry(h
)->tls_type
;
3026 if (tls_type
== GOT_TLS_GD
)
3029 if (r_type
== R_390_TLS_LOAD
)
3031 if (!bfd_link_pic (info
) && (h
== NULL
|| h
->dynindx
== -1))
3033 /* IE->LE transition. Four valid cases:
3034 lg %rx,(0,%ry) -> sllg %rx,%ry,0
3035 lg %rx,(%ry,0) -> sllg %rx,%ry,0
3036 lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
3037 lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
3038 unsigned int insn0
, insn1
, ry
;
3040 insn0
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
3041 insn1
= bfd_get_16 (input_bfd
, contents
+ rel
->r_offset
+ 4);
3042 if (insn1
!= 0x0004)
3044 invalid_tls_insn (input_bfd
, input_section
, rel
);
3047 if ((insn0
& 0xff00f000) == 0xe3000000)
3048 /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
3049 ry
= (insn0
& 0x000f0000);
3050 else if ((insn0
& 0xff0f0000) == 0xe3000000)
3051 /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
3052 ry
= (insn0
& 0x0000f000) << 4;
3053 else if ((insn0
& 0xff00f000) == 0xe300c000)
3054 /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
3055 ry
= (insn0
& 0x000f0000);
3056 else if ((insn0
& 0xff0f0000) == 0xe30c0000)
3057 /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
3058 ry
= (insn0
& 0x0000f000) << 4;
3061 invalid_tls_insn (input_bfd
, input_section
, rel
);
3064 insn0
= 0xeb000000 | (insn0
& 0x00f00000) | ry
;
3066 bfd_put_32 (output_bfd
, insn0
, contents
+ rel
->r_offset
);
3067 bfd_put_16 (output_bfd
, insn1
, contents
+ rel
->r_offset
+ 4);
3070 else if (r_type
== R_390_TLS_GDCALL
)
3072 unsigned int insn0
, insn1
;
3074 insn0
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
3075 insn1
= bfd_get_16 (input_bfd
, contents
+ rel
->r_offset
+ 4);
3076 if ((insn0
& 0xffff0000) != 0xc0e50000)
3078 invalid_tls_insn (input_bfd
, input_section
, rel
);
3081 if (!bfd_link_pic (info
) && (h
== NULL
|| h
->dynindx
== -1))
3083 /* GD->LE transition.
3084 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3090 /* GD->IE transition.
3091 brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
3095 bfd_put_32 (output_bfd
, insn0
, contents
+ rel
->r_offset
);
3096 bfd_put_16 (output_bfd
, insn1
, contents
+ rel
->r_offset
+ 4);
3098 else if (r_type
== R_390_TLS_LDCALL
)
3100 if (!bfd_link_pic (info
))
3102 unsigned int insn0
, insn1
;
3104 insn0
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
3105 insn1
= bfd_get_16 (input_bfd
, contents
+ rel
->r_offset
+ 4);
3106 if ((insn0
& 0xffff0000) != 0xc0e50000)
3108 invalid_tls_insn (input_bfd
, input_section
, rel
);
3111 /* LD->LE transition.
3112 brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3115 bfd_put_32 (output_bfd
, insn0
, contents
+ rel
->r_offset
);
3116 bfd_put_16 (output_bfd
, insn1
, contents
+ rel
->r_offset
+ 4);
3125 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3126 because such sections are not SEC_ALLOC and thus ld.so will
3127 not process them. */
3128 if (unresolved_reloc
3129 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
3131 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
3132 rel
->r_offset
) != (bfd_vma
) -1)
3134 /* xgettext:c-format */
3135 (_("%pB(%pA+%#" PRIx64
"): "
3136 "unresolvable %s relocation against symbol `%s'"),
3139 (uint64_t) rel
->r_offset
,
3141 h
->root
.root
.string
);
3145 /* When applying a 24 bit reloc we need to start one byte
3146 earlier. Otherwise the 32 bit get/put bfd operations might
3147 access a byte after the actual section. */
3148 if (r_type
== R_390_PC24DBL
3149 || r_type
== R_390_PLT24DBL
)
3152 if (r_type
== R_390_20
3153 || r_type
== R_390_GOT20
3154 || r_type
== R_390_GOTPLT20
3155 || r_type
== R_390_TLS_GOTIE20
)
3157 relocation
+= rel
->r_addend
;
3158 relocation
= (relocation
&0xfff) << 8 | (relocation
&0xff000) >> 12;
3159 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3160 contents
, rel
->r_offset
,
3164 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3165 contents
, rel
->r_offset
,
3166 relocation
, rel
->r_addend
);
3168 if (r
!= bfd_reloc_ok
)
3173 name
= h
->root
.root
.string
;
3176 name
= bfd_elf_string_from_elf_section (input_bfd
,
3177 symtab_hdr
->sh_link
,
3182 name
= bfd_section_name (sec
);
3185 if (r
== bfd_reloc_overflow
)
3186 (*info
->callbacks
->reloc_overflow
)
3187 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
3188 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
3192 /* xgettext:c-format */
3193 (_("%pB(%pA+%#" PRIx64
"): reloc against `%s': error %d"),
3194 input_bfd
, input_section
,
3195 (uint64_t) rel
->r_offset
, name
, (int) r
);
3204 /* Generate the PLT slots together with the dynamic relocations needed
3205 for IFUNC symbols. */
3208 elf_s390_finish_ifunc_symbol (bfd
*output_bfd
,
3209 struct bfd_link_info
*info
,
3210 struct elf_link_hash_entry
*h
,
3211 struct elf_s390_link_hash_table
*htab
,
3213 bfd_vma resolver_address
)
3217 Elf_Internal_Rela rela
;
3219 asection
*plt
, *gotplt
, *relplt
;
3221 if (htab
->elf
.iplt
== NULL
3222 || htab
->elf
.igotplt
== NULL
3223 || htab
->elf
.irelplt
== NULL
)
3226 /* Index of the PLT slot within iplt section. */
3227 plt_index
= plt_offset
/ PLT_ENTRY_SIZE
;
3228 plt
= htab
->elf
.iplt
;
3229 /* Offset into the igot.plt section. */
3230 got_offset
= plt_index
* GOT_ENTRY_SIZE
;
3231 gotplt
= htab
->elf
.igotplt
;
3232 relplt
= htab
->elf
.irelplt
;
3234 /* Fill in the blueprint of a PLT. */
3235 memcpy (plt
->contents
+ plt_offset
, elf_s390x_plt_entry
,
3238 /* Fixup the relative address to the GOT entry */
3239 bfd_put_32 (output_bfd
,
3240 (gotplt
->output_section
->vma
+
3241 gotplt
->output_offset
+ got_offset
3242 - (plt
->output_section
->vma
+
3243 plt
->output_offset
+
3245 plt
->contents
+ plt_offset
+ 2);
3246 /* Fixup the relative branch to PLT 0 */
3247 bfd_put_32 (output_bfd
, - (plt
->output_offset
+
3248 (PLT_ENTRY_SIZE
* plt_index
) + 22)/2,
3249 plt
->contents
+ plt_offset
+ 24);
3250 /* Fixup offset into .rela.plt section. */
3251 bfd_put_32 (output_bfd
, relplt
->output_offset
+
3252 plt_index
* sizeof (Elf64_External_Rela
),
3253 plt
->contents
+ plt_offset
+ 28);
3255 /* Fill in the entry in the global offset table.
3256 Points to instruction after GOT offset. */
3257 bfd_put_64 (output_bfd
,
3258 (plt
->output_section
->vma
3259 + plt
->output_offset
3262 gotplt
->contents
+ got_offset
);
3264 /* Fill in the entry in the .rela.plt section. */
3265 rela
.r_offset
= (gotplt
->output_section
->vma
3266 + gotplt
->output_offset
3271 || ((bfd_link_executable (info
)
3272 || ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
3275 /* The symbol can be locally resolved. */
3276 rela
.r_info
= ELF64_R_INFO (0, R_390_IRELATIVE
);
3277 rela
.r_addend
= resolver_address
;
3281 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_390_JMP_SLOT
);
3285 loc
= relplt
->contents
+ plt_index
* sizeof (Elf64_External_Rela
);
3286 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
3290 /* Finish up dynamic symbol handling. We set the contents of various
3291 dynamic sections here. */
3294 elf_s390_finish_dynamic_symbol (bfd
*output_bfd
,
3295 struct bfd_link_info
*info
,
3296 struct elf_link_hash_entry
*h
,
3297 Elf_Internal_Sym
*sym
)
3299 struct elf_s390_link_hash_table
*htab
;
3300 struct elf_s390_link_hash_entry
*eh
= (struct elf_s390_link_hash_entry
*)h
;
3302 htab
= elf_s390_hash_table (info
);
3306 if (h
->plt
.offset
!= (bfd_vma
) -1)
3309 bfd_vma gotplt_offset
;
3310 Elf_Internal_Rela rela
;
3313 /* This symbol has an entry in the procedure linkage table. Set
3315 if (s390_is_ifunc_symbol_p (h
) && h
->def_regular
)
3317 elf_s390_finish_ifunc_symbol (output_bfd
, info
, h
,
3318 htab
, h
->plt
.offset
,
3319 eh
->ifunc_resolver_address
+
3320 eh
->ifunc_resolver_section
->output_offset
+
3321 eh
->ifunc_resolver_section
->output_section
->vma
);
3323 /* Do not return yet. Handling of explicit GOT slots of
3324 IFUNC symbols is below. */
3328 if (h
->dynindx
== -1
3329 || htab
->elf
.splt
== NULL
3330 || htab
->elf
.sgotplt
== NULL
3331 || htab
->elf
.srelplt
== NULL
)
3335 Current offset - size first entry / entry size. */
3336 plt_index
= (h
->plt
.offset
- PLT_FIRST_ENTRY_SIZE
) / PLT_ENTRY_SIZE
;
3338 /* The slots in the .got.plt correspond to the PLT slots in
3340 gotplt_offset
= plt_index
* GOT_ENTRY_SIZE
;
3342 /* If .got.plt comes first it needs to contain the 3 header
3344 if (!s390_gotplt_after_got_p (info
))
3345 gotplt_offset
+= 3 * GOT_ENTRY_SIZE
;
3347 /* Fill in the blueprint of a PLT. */
3348 memcpy (htab
->elf
.splt
->contents
+ h
->plt
.offset
, elf_s390x_plt_entry
,
3351 /* The first instruction in the PLT entry is a LARL loading
3352 the address of the GOT slot. We write the 4 byte
3353 immediate operand of the LARL instruction here. */
3354 bfd_put_32 (output_bfd
,
3355 (htab
->elf
.sgotplt
->output_section
->vma
+
3356 htab
->elf
.sgotplt
->output_offset
+ gotplt_offset
3357 - (htab
->elf
.splt
->output_section
->vma
+
3358 htab
->elf
.splt
->output_offset
+
3360 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 2);
3361 /* Fixup the relative branch to PLT 0 */
3362 bfd_put_32 (output_bfd
, - (PLT_FIRST_ENTRY_SIZE
+
3363 (PLT_ENTRY_SIZE
* plt_index
) + 22)/2,
3364 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 24);
3365 /* Fixup offset into .rela.plt section. */
3366 bfd_put_32 (output_bfd
, plt_index
* sizeof (Elf64_External_Rela
),
3367 htab
->elf
.splt
->contents
+ h
->plt
.offset
+ 28);
3369 /* Fill in the entry in the global offset table.
3370 Points to instruction after GOT offset. */
3371 bfd_put_64 (output_bfd
,
3372 (htab
->elf
.splt
->output_section
->vma
3373 + htab
->elf
.splt
->output_offset
3376 htab
->elf
.sgotplt
->contents
+ gotplt_offset
);
3378 /* Fill in the entry in the .rela.plt section. */
3379 rela
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
3380 + htab
->elf
.sgotplt
->output_offset
3382 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_390_JMP_SLOT
);
3384 loc
= htab
->elf
.srelplt
->contents
+ plt_index
*
3385 sizeof (Elf64_External_Rela
);
3386 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
3388 if (!h
->def_regular
)
3390 /* Mark the symbol as undefined, rather than as defined in
3391 the .plt section. Leave the value alone. This is a clue
3392 for the dynamic linker, to make function pointer
3393 comparisons work between an application and shared
3395 sym
->st_shndx
= SHN_UNDEF
;
3400 if (h
->got
.offset
!= (bfd_vma
) -1
3401 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_GD
3402 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_IE
3403 && elf_s390_hash_entry(h
)->tls_type
!= GOT_TLS_IE_NLT
)
3405 Elf_Internal_Rela rela
;
3408 /* This symbol has an entry in the global offset table. Set it
3410 if (htab
->elf
.sgot
== NULL
|| htab
->elf
.srelgot
== NULL
)
3413 rela
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
3414 + htab
->elf
.sgot
->output_offset
3415 + (h
->got
.offset
&~ (bfd_vma
) 1));
3417 if (h
->def_regular
&& s390_is_ifunc_symbol_p (h
))
3419 if (bfd_link_pic (info
))
3421 /* An explicit GOT slot usage needs GLOB_DAT. If the
3422 symbol references local the implicit got.iplt slot
3423 will be used and the IRELATIVE reloc has been created
3429 /* For non-shared objects explicit GOT slots must be
3430 filled with the PLT slot address for pointer
3431 equality reasons. */
3432 bfd_put_64 (output_bfd
, (htab
->elf
.iplt
->output_section
->vma
3433 + htab
->elf
.iplt
->output_offset
3435 htab
->elf
.sgot
->contents
+ h
->got
.offset
);
3439 else if (bfd_link_pic (info
)
3440 && SYMBOL_REFERENCES_LOCAL (info
, h
))
3442 if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
3445 /* If this is a static link, or it is a -Bsymbolic link and
3446 the symbol is defined locally or was forced to be local
3447 because of a version file, we just want to emit a
3448 RELATIVE reloc. The entry in the global offset table
3449 will already have been initialized in the
3450 relocate_section function. */
3451 if (!(h
->def_regular
|| ELF_COMMON_DEF_P (h
)))
3453 BFD_ASSERT((h
->got
.offset
& 1) != 0);
3454 rela
.r_info
= ELF64_R_INFO (0, R_390_RELATIVE
);
3455 rela
.r_addend
= (h
->root
.u
.def
.value
3456 + h
->root
.u
.def
.section
->output_section
->vma
3457 + h
->root
.u
.def
.section
->output_offset
);
3461 BFD_ASSERT((h
->got
.offset
& 1) == 0);
3463 bfd_put_64 (output_bfd
, (bfd_vma
) 0, htab
->elf
.sgot
->contents
+ h
->got
.offset
);
3464 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_390_GLOB_DAT
);
3468 loc
= htab
->elf
.srelgot
->contents
;
3469 loc
+= htab
->elf
.srelgot
->reloc_count
++ * sizeof (Elf64_External_Rela
);
3470 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
3475 Elf_Internal_Rela rela
;
3479 /* This symbols needs a copy reloc. Set it up. */
3481 if (h
->dynindx
== -1
3482 || (h
->root
.type
!= bfd_link_hash_defined
3483 && h
->root
.type
!= bfd_link_hash_defweak
)
3484 || htab
->elf
.srelbss
== NULL
)
3487 rela
.r_offset
= (h
->root
.u
.def
.value
3488 + h
->root
.u
.def
.section
->output_section
->vma
3489 + h
->root
.u
.def
.section
->output_offset
);
3490 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_390_COPY
);
3492 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
3493 s
= htab
->elf
.sreldynrelro
;
3495 s
= htab
->elf
.srelbss
;
3496 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf64_External_Rela
);
3497 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
3500 /* Mark some specially defined symbols as absolute. */
3501 if (h
== htab
->elf
.hdynamic
3502 || h
== htab
->elf
.hgot
3503 || h
== htab
->elf
.hplt
)
3504 sym
->st_shndx
= SHN_ABS
;
3509 /* Used to decide how to sort relocs in an optimal manner for the
3510 dynamic linker, before writing them out. */
3512 static enum elf_reloc_type_class
3513 elf_s390_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3514 const asection
*rel_sec ATTRIBUTE_UNUSED
,
3515 const Elf_Internal_Rela
*rela
)
3517 bfd
*abfd
= info
->output_bfd
;
3518 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3519 struct elf_s390_link_hash_table
*htab
= elf_s390_hash_table (info
);
3520 unsigned long r_symndx
= ELF64_R_SYM (rela
->r_info
);
3521 Elf_Internal_Sym sym
;
3523 if (htab
->elf
.dynsym
== NULL
3524 || !bed
->s
->swap_symbol_in (abfd
,
3525 (htab
->elf
.dynsym
->contents
3526 + r_symndx
* bed
->s
->sizeof_sym
),
3530 /* Check relocation against STT_GNU_IFUNC symbol. */
3531 if (ELF_ST_TYPE (sym
.st_info
) == STT_GNU_IFUNC
)
3532 return reloc_class_ifunc
;
3534 switch ((int) ELF64_R_TYPE (rela
->r_info
))
3536 case R_390_RELATIVE
:
3537 return reloc_class_relative
;
3538 case R_390_JMP_SLOT
:
3539 return reloc_class_plt
;
3541 return reloc_class_copy
;
3543 return reloc_class_normal
;
3547 /* Finish up the dynamic sections. */
3550 elf_s390_finish_dynamic_sections (bfd
*output_bfd
,
3551 struct bfd_link_info
*info
)
3553 struct elf_s390_link_hash_table
*htab
;
3559 htab
= elf_s390_hash_table (info
);
3563 dynobj
= htab
->elf
.dynobj
;
3564 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
3566 if (htab
->elf
.dynamic_sections_created
)
3568 Elf64_External_Dyn
*dyncon
, *dynconend
;
3570 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
3573 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
3574 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3575 for (; dyncon
< dynconend
; dyncon
++)
3577 Elf_Internal_Dyn dyn
;
3580 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3588 /* DT_PLTGOT matches _GLOBAL_OFFSET_TABLE_ */
3589 dyn
.d_un
.d_ptr
= s390_got_pointer (info
);
3593 s
= htab
->elf
.srelplt
;
3594 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3598 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
3599 if (htab
->elf
.irelplt
)
3600 dyn
.d_un
.d_val
+= htab
->elf
.irelplt
->size
;
3604 /* The procedure linkage table relocs (DT_JMPREL) should
3605 not be included in the overall relocs (DT_RELA).
3606 Therefore, we override the DT_RELASZ entry here to
3607 make it not include the JMPREL relocs. Since the
3608 linker script arranges for .rela.plt to follow all
3609 other relocation sections, we don't have to worry
3610 about changing the DT_RELA entry. */
3611 dyn
.d_un
.d_val
-= htab
->elf
.srelplt
->size
;
3612 if (htab
->elf
.irelplt
)
3613 dyn
.d_un
.d_val
-= htab
->elf
.irelplt
->size
;
3617 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3620 /* Fill in the special first entry in the procedure linkage table. */
3621 if (htab
->elf
.splt
&& htab
->elf
.splt
->size
> 0)
3623 /* fill in blueprint for plt 0 entry */
3624 memcpy (htab
->elf
.splt
->contents
, elf_s390x_first_plt_entry
,
3625 PLT_FIRST_ENTRY_SIZE
);
3626 /* The second instruction in the first PLT entry is a LARL
3627 loading the GOT pointer. Fill in the LARL immediate
3629 bfd_put_32 (output_bfd
,
3630 (s390_got_pointer (info
)
3631 - htab
->elf
.splt
->output_section
->vma
3632 - htab
->elf
.splt
->output_offset
- 6)/2,
3633 htab
->elf
.splt
->contents
+ 8);
3635 if (elf_section_data (htab
->elf
.splt
->output_section
) != NULL
)
3636 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
3640 if (htab
->elf
.hgot
&& htab
->elf
.hgot
->root
.u
.def
.section
)
3642 /* Fill in the first three entries in the global offset table. */
3643 if (htab
->elf
.hgot
->root
.u
.def
.section
->size
> 0)
3645 bfd_put_64 (output_bfd
,
3646 (sdyn
== NULL
? (bfd_vma
) 0
3647 : sdyn
->output_section
->vma
+ sdyn
->output_offset
),
3648 htab
->elf
.hgot
->root
.u
.def
.section
->contents
);
3649 /* One entry for shared object struct ptr. */
3650 bfd_put_64 (output_bfd
, (bfd_vma
) 0,
3651 htab
->elf
.hgot
->root
.u
.def
.section
->contents
+ 8);
3652 /* One entry for _dl_runtime_resolve. */
3653 bfd_put_64 (output_bfd
, (bfd_vma
) 0,
3654 htab
->elf
.hgot
->root
.u
.def
.section
->contents
+ 16);
3656 elf_section_data (htab
->elf
.sgot
->output_section
)
3657 ->this_hdr
.sh_entsize
= 8;
3660 /* Finish dynamic symbol for local IFUNC symbols. */
3661 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
3663 struct plt_entry
*local_plt
;
3664 Elf_Internal_Sym
*isym
;
3665 Elf_Internal_Shdr
*symtab_hdr
;
3667 symtab_hdr
= &elf_symtab_hdr (ibfd
);
3669 if (!is_s390_elf (ibfd
))
3672 local_plt
= elf_s390_local_plt (ibfd
);
3673 if (local_plt
!= NULL
)
3674 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
3676 if (local_plt
[i
].plt
.offset
!= (bfd_vma
) -1)
3678 asection
*sec
= local_plt
[i
].sec
;
3679 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
, ibfd
, i
);
3683 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
3684 elf_s390_finish_ifunc_symbol (output_bfd
, info
, NULL
, htab
,
3685 local_plt
[i
].plt
.offset
,
3687 + sec
->output_section
->vma
3688 + sec
->output_offset
);
3697 /* Support for core dump NOTE sections. */
3700 elf_s390_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
3705 switch (note
->descsz
)
3710 case 336: /* sizeof(struct elf_prstatus) on s390x */
3712 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
3715 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
3723 /* Make a ".reg/999" section. */
3724 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
3725 size
, note
->descpos
+ offset
);
3729 elf_s390_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
3731 switch (note
->descsz
)
3736 case 136: /* sizeof(struct elf_prpsinfo) on s390x */
3737 elf_tdata (abfd
)->core
->pid
3738 = bfd_get_32 (abfd
, note
->descdata
+ 24);
3739 elf_tdata (abfd
)->core
->program
3740 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
3741 elf_tdata (abfd
)->core
->command
3742 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
3745 /* Note that for some reason, a spurious space is tacked
3746 onto the end of the args in some (at least one anyway)
3747 implementations, so strip it off if it exists. */
3750 char *command
= elf_tdata (abfd
)->core
->command
;
3751 int n
= strlen (command
);
3753 if (0 < n
&& command
[n
- 1] == ' ')
3754 command
[n
- 1] = '\0';
3761 elf_s390_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
,
3773 char data
[136] ATTRIBUTE_NONSTRING
= { 0 };
3774 const char *fname
, *psargs
;
3776 va_start (ap
, note_type
);
3777 fname
= va_arg (ap
, const char *);
3778 psargs
= va_arg (ap
, const char *);
3781 strncpy (data
+ 40, fname
, 16);
3782 #if GCC_VERSION == 8000 || GCC_VERSION == 8001
3784 /* GCC 8.0 and 8.1 warn about 80 equals destination size with
3785 -Wstringop-truncation:
3786 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643
3788 DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION
;
3790 strncpy (data
+ 56, psargs
, 80);
3791 #if GCC_VERSION == 8000 || GCC_VERSION == 8001
3794 return elfcore_write_note (abfd
, buf
, bufsiz
, "CORE", note_type
,
3795 &data
, sizeof (data
));
3800 char data
[336] = { 0 };
3805 va_start (ap
, note_type
);
3806 pid
= va_arg (ap
, long);
3807 cursig
= va_arg (ap
, int);
3808 gregs
= va_arg (ap
, const void *);
3811 bfd_put_16 (abfd
, cursig
, data
+ 12);
3812 bfd_put_32 (abfd
, pid
, data
+ 32);
3813 memcpy (data
+ 112, gregs
, 216);
3814 return elfcore_write_note (abfd
, buf
, bufsiz
, "CORE", note_type
,
3815 &data
, sizeof (data
));
3821 /* Return address for Ith PLT stub in section PLT, for relocation REL
3822 or (bfd_vma) -1 if it should not be included. */
3825 elf_s390_plt_sym_val (bfd_vma i
, const asection
*plt
,
3826 const arelent
*rel ATTRIBUTE_UNUSED
)
3828 return plt
->vma
+ PLT_FIRST_ENTRY_SIZE
+ i
* PLT_ENTRY_SIZE
;
3831 /* Merge backend specific data from an object file to the output
3832 object file when linking. */
3835 elf64_s390_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
3837 if (!is_s390_elf (ibfd
) || !is_s390_elf (info
->output_bfd
))
3840 return elf_s390_merge_obj_attributes (ibfd
, info
);
3843 /* We may add a PT_S390_PGSTE program header. */
3846 elf_s390_additional_program_headers (bfd
*abfd ATTRIBUTE_UNUSED
,
3847 struct bfd_link_info
*info
)
3849 struct elf_s390_link_hash_table
*htab
;
3853 htab
= elf_s390_hash_table (info
);
3855 return htab
->params
->pgste
;
3861 /* Add the PT_S390_PGSTE program header. */
3864 elf_s390_modify_segment_map (bfd
*abfd
, struct bfd_link_info
*info
)
3866 struct elf_s390_link_hash_table
*htab
;
3867 struct elf_segment_map
*m
, *pm
= NULL
;
3872 htab
= elf_s390_hash_table (info
);
3873 if (!htab
|| !htab
->params
->pgste
)
3876 /* If there is already a PT_S390_PGSTE header, avoid adding
3878 m
= elf_seg_map (abfd
);
3879 while (m
&& m
->p_type
!= PT_S390_PGSTE
)
3888 m
= (struct elf_segment_map
*)
3889 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
));
3892 m
->p_type
= PT_S390_PGSTE
;
3902 bfd_elf_s390_set_options (struct bfd_link_info
*info
,
3903 struct s390_elf_params
*params
)
3905 struct elf_s390_link_hash_table
*htab
;
3909 htab
= elf_s390_hash_table (info
);
3911 htab
->params
= params
;
3918 /* Why was the hash table entry size definition changed from
3919 ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3920 this is the only reason for the s390_elf64_size_info structure. */
3922 const struct elf_size_info s390_elf64_size_info
=
3924 sizeof (Elf64_External_Ehdr
),
3925 sizeof (Elf64_External_Phdr
),
3926 sizeof (Elf64_External_Shdr
),
3927 sizeof (Elf64_External_Rel
),
3928 sizeof (Elf64_External_Rela
),
3929 sizeof (Elf64_External_Sym
),
3930 sizeof (Elf64_External_Dyn
),
3931 sizeof (Elf_External_Note
),
3932 8, /* hash-table entry size. */
3933 1, /* internal relocations per external relocations. */
3934 64, /* arch_size. */
3935 3, /* log_file_align. */
3936 ELFCLASS64
, EV_CURRENT
,
3937 bfd_elf64_write_out_phdrs
,
3938 bfd_elf64_write_shdrs_and_ehdr
,
3939 bfd_elf64_checksum_contents
,
3940 bfd_elf64_write_relocs
,
3941 bfd_elf64_swap_symbol_in
,
3942 bfd_elf64_swap_symbol_out
,
3943 bfd_elf64_slurp_reloc_table
,
3944 bfd_elf64_slurp_symbol_table
,
3945 bfd_elf64_swap_dyn_in
,
3946 bfd_elf64_swap_dyn_out
,
3947 bfd_elf64_swap_reloc_in
,
3948 bfd_elf64_swap_reloc_out
,
3949 bfd_elf64_swap_reloca_in
,
3950 bfd_elf64_swap_reloca_out
3953 #define TARGET_BIG_SYM s390_elf64_vec
3954 #define TARGET_BIG_NAME "elf64-s390"
3955 #define ELF_ARCH bfd_arch_s390
3956 #define ELF_TARGET_ID S390_ELF_DATA
3957 #define ELF_MACHINE_CODE EM_S390
3958 #define ELF_MACHINE_ALT1 EM_S390_OLD
3959 #define ELF_MAXPAGESIZE 0x1000
3961 #define elf_backend_size_info s390_elf64_size_info
3963 #define elf_backend_can_gc_sections 1
3964 #define elf_backend_can_refcount 1
3965 #define elf_backend_want_got_plt 1
3966 #define elf_backend_plt_readonly 1
3967 #define elf_backend_want_plt_sym 0
3968 #define elf_backend_got_header_size 24
3969 #define elf_backend_want_dynrelro 1
3970 #define elf_backend_rela_normal 1
3972 #define elf_info_to_howto elf_s390_info_to_howto
3974 #define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3975 #define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3976 #define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3977 #define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
3978 #define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
3980 #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3981 #define elf_backend_check_relocs elf_s390_check_relocs
3982 #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3983 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
3984 #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3985 #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3986 #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3987 #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3988 #define elf_backend_relocate_section elf_s390_relocate_section
3989 #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3990 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3991 #define elf_backend_grok_prstatus elf_s390_grok_prstatus
3992 #define elf_backend_grok_psinfo elf_s390_grok_psinfo
3993 #define elf_backend_write_core_note elf_s390_write_core_note
3994 #define elf_backend_plt_sym_val elf_s390_plt_sym_val
3995 #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
3996 #define elf_backend_additional_program_headers elf_s390_additional_program_headers
3997 #define elf_backend_modify_segment_map elf_s390_modify_segment_map
3999 #define bfd_elf64_mkobject elf_s390_mkobject
4000 #define elf_backend_object_p elf_s390_object_p
4002 #include "elf64-target.h"