elf64-s390.c revision 1.6 1 1.1 christos /* IBM S/390-specific support for 64-bit ELF
2 1.6 christos Copyright (C) 2000-2016 Free Software Foundation, Inc.
3 1.1 christos Contributed Martin Schwidefsky (schwidefsky (at) de.ibm.com).
4 1.1 christos
5 1.1 christos This file is part of BFD, the Binary File Descriptor library.
6 1.1 christos
7 1.1 christos This program is free software; you can redistribute it and/or modify
8 1.1 christos it under the terms of the GNU General Public License as published by
9 1.1 christos the Free Software Foundation; either version 3 of the License, or
10 1.1 christos (at your option) any later version.
11 1.1 christos
12 1.1 christos This program is distributed in the hope that it will be useful,
13 1.1 christos but WITHOUT ANY WARRANTY; without even the implied warranty of
14 1.1 christos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 1.1 christos GNU General Public License for more details.
16 1.1 christos
17 1.1 christos You should have received a copy of the GNU General Public License
18 1.1 christos along with this program; if not, write to the Free Software
19 1.1 christos Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
20 1.1 christos 02110-1301, USA. */
21 1.1 christos
22 1.1 christos #include "sysdep.h"
23 1.1 christos #include "bfd.h"
24 1.1 christos #include "bfdlink.h"
25 1.1 christos #include "libbfd.h"
26 1.1 christos #include "elf-bfd.h"
27 1.1 christos #include "elf/s390.h"
28 1.1 christos
29 1.1 christos /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
30 1.1 christos from smaller values. Start with zero, widen, *then* decrement. */
31 1.1 christos #define MINUS_ONE (((bfd_vma)0) - 1)
32 1.1 christos
33 1.1 christos static bfd_reloc_status_type
34 1.1 christos s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
35 1.1 christos asection *, bfd *, char **);
36 1.1 christos static bfd_reloc_status_type
37 1.1 christos s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
38 1.1 christos asection *, bfd *, char **);
39 1.1 christos
40 1.1 christos /* The relocation "howto" table. */
41 1.1 christos static reloc_howto_type elf_howto_table[] =
42 1.1 christos {
43 1.1 christos HOWTO (R_390_NONE, /* type */
44 1.1 christos 0, /* rightshift */
45 1.5 christos 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
46 1.1 christos 0, /* bitsize */
47 1.1 christos FALSE, /* pc_relative */
48 1.1 christos 0, /* bitpos */
49 1.1 christos complain_overflow_dont, /* complain_on_overflow */
50 1.1 christos bfd_elf_generic_reloc, /* special_function */
51 1.1 christos "R_390_NONE", /* name */
52 1.1 christos FALSE, /* partial_inplace */
53 1.1 christos 0, /* src_mask */
54 1.1 christos 0, /* dst_mask */
55 1.1 christos FALSE), /* pcrel_offset */
56 1.1 christos
57 1.1 christos HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
58 1.1 christos bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
59 1.1 christos HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
60 1.1 christos bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
61 1.1 christos HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
62 1.1 christos bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
63 1.1 christos HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
64 1.1 christos bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
65 1.1 christos HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
66 1.1 christos bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
67 1.1 christos HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
68 1.1 christos bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
69 1.1 christos HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
70 1.1 christos bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
71 1.1 christos HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
72 1.1 christos bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
73 1.1 christos HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
74 1.1 christos bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE),
75 1.1 christos HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
76 1.1 christos bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE),
77 1.1 christos HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
78 1.1 christos bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE),
79 1.1 christos HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
80 1.1 christos bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE),
81 1.1 christos HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
82 1.1 christos bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE),
83 1.1 christos HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
84 1.1 christos bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE),
85 1.1 christos HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
86 1.1 christos bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
87 1.1 christos HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
88 1.1 christos bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
89 1.1 christos HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
90 1.1 christos bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
91 1.1 christos HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
92 1.1 christos bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
93 1.1 christos HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
94 1.1 christos bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
95 1.1 christos HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
96 1.1 christos bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
97 1.1 christos HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
98 1.1 christos bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
99 1.1 christos HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
100 1.1 christos bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE),
101 1.1 christos HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
102 1.1 christos bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
103 1.1 christos HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
104 1.1 christos bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
105 1.1 christos HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
106 1.1 christos bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
107 1.1 christos HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
108 1.1 christos bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE),
109 1.1 christos HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
110 1.1 christos bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
111 1.1 christos HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
112 1.1 christos bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE),
113 1.1 christos HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
114 1.1 christos bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
115 1.1 christos HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
116 1.1 christos bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
117 1.1 christos HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
118 1.1 christos bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
119 1.1 christos HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
120 1.1 christos bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE),
121 1.1 christos HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
122 1.1 christos bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE),
123 1.1 christos HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
124 1.1 christos bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
125 1.1 christos HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
126 1.1 christos bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
127 1.1 christos HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
128 1.1 christos bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE),
129 1.1 christos HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
130 1.1 christos s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
131 1.1 christos HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
132 1.1 christos s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
133 1.1 christos HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
134 1.1 christos s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
135 1.1 christos EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */
136 1.1 christos HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
137 1.1 christos bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
138 1.1 christos HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
139 1.1 christos bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
140 1.1 christos EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */
141 1.1 christos HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
142 1.1 christos bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
143 1.1 christos EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */
144 1.1 christos HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
145 1.1 christos bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
146 1.1 christos EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */
147 1.1 christos HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
148 1.1 christos bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
149 1.1 christos HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
150 1.1 christos bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
151 1.1 christos EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */
152 1.1 christos HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
153 1.1 christos bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
154 1.1 christos EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */
155 1.1 christos HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
156 1.1 christos bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
157 1.1 christos HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
158 1.1 christos bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
159 1.1 christos HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
160 1.1 christos bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
161 1.1 christos HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
162 1.1 christos bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
163 1.1 christos HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
164 1.1 christos s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
165 1.1 christos HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
166 1.1 christos s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
167 1.1 christos HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
168 1.1 christos s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
169 1.1 christos HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
170 1.1 christos s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
171 1.1 christos HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
172 1.1 christos bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE),
173 1.1 christos HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
174 1.1 christos bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
175 1.1 christos HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
176 1.1 christos bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
177 1.1 christos HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
178 1.1 christos bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
179 1.1 christos HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
180 1.1 christos bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
181 1.1 christos };
182 1.1 christos
183 1.1 christos /* GNU extension to record C++ vtable hierarchy. */
184 1.1 christos static reloc_howto_type elf64_s390_vtinherit_howto =
185 1.1 christos HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
186 1.1 christos static reloc_howto_type elf64_s390_vtentry_howto =
187 1.1 christos 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);
188 1.1 christos
189 1.1 christos static reloc_howto_type *
190 1.1 christos elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
191 1.1 christos bfd_reloc_code_real_type code)
192 1.1 christos {
193 1.1 christos switch (code)
194 1.1 christos {
195 1.1 christos case BFD_RELOC_NONE:
196 1.1 christos return &elf_howto_table[(int) R_390_NONE];
197 1.1 christos case BFD_RELOC_8:
198 1.1 christos return &elf_howto_table[(int) R_390_8];
199 1.1 christos case BFD_RELOC_390_12:
200 1.1 christos return &elf_howto_table[(int) R_390_12];
201 1.1 christos case BFD_RELOC_16:
202 1.1 christos return &elf_howto_table[(int) R_390_16];
203 1.1 christos case BFD_RELOC_32:
204 1.1 christos return &elf_howto_table[(int) R_390_32];
205 1.1 christos case BFD_RELOC_CTOR:
206 1.1 christos return &elf_howto_table[(int) R_390_32];
207 1.1 christos case BFD_RELOC_32_PCREL:
208 1.1 christos return &elf_howto_table[(int) R_390_PC32];
209 1.1 christos case BFD_RELOC_390_GOT12:
210 1.1 christos return &elf_howto_table[(int) R_390_GOT12];
211 1.1 christos case BFD_RELOC_32_GOT_PCREL:
212 1.1 christos return &elf_howto_table[(int) R_390_GOT32];
213 1.1 christos case BFD_RELOC_390_PLT32:
214 1.1 christos return &elf_howto_table[(int) R_390_PLT32];
215 1.1 christos case BFD_RELOC_390_COPY:
216 1.1 christos return &elf_howto_table[(int) R_390_COPY];
217 1.1 christos case BFD_RELOC_390_GLOB_DAT:
218 1.1 christos return &elf_howto_table[(int) R_390_GLOB_DAT];
219 1.1 christos case BFD_RELOC_390_JMP_SLOT:
220 1.1 christos return &elf_howto_table[(int) R_390_JMP_SLOT];
221 1.1 christos case BFD_RELOC_390_RELATIVE:
222 1.1 christos return &elf_howto_table[(int) R_390_RELATIVE];
223 1.1 christos case BFD_RELOC_32_GOTOFF:
224 1.1 christos return &elf_howto_table[(int) R_390_GOTOFF32];
225 1.1 christos case BFD_RELOC_390_GOTPC:
226 1.1 christos return &elf_howto_table[(int) R_390_GOTPC];
227 1.1 christos case BFD_RELOC_390_GOT16:
228 1.1 christos return &elf_howto_table[(int) R_390_GOT16];
229 1.1 christos case BFD_RELOC_16_PCREL:
230 1.1 christos return &elf_howto_table[(int) R_390_PC16];
231 1.1 christos case BFD_RELOC_390_PC12DBL:
232 1.1 christos return &elf_howto_table[(int) R_390_PC12DBL];
233 1.1 christos case BFD_RELOC_390_PLT12DBL:
234 1.1 christos return &elf_howto_table[(int) R_390_PLT12DBL];
235 1.1 christos case BFD_RELOC_390_PC16DBL:
236 1.1 christos return &elf_howto_table[(int) R_390_PC16DBL];
237 1.1 christos case BFD_RELOC_390_PLT16DBL:
238 1.1 christos return &elf_howto_table[(int) R_390_PLT16DBL];
239 1.1 christos case BFD_RELOC_390_PC24DBL:
240 1.1 christos return &elf_howto_table[(int) R_390_PC24DBL];
241 1.1 christos case BFD_RELOC_390_PLT24DBL:
242 1.1 christos return &elf_howto_table[(int) R_390_PLT24DBL];
243 1.1 christos case BFD_RELOC_390_PC32DBL:
244 1.1 christos return &elf_howto_table[(int) R_390_PC32DBL];
245 1.1 christos case BFD_RELOC_390_PLT32DBL:
246 1.1 christos return &elf_howto_table[(int) R_390_PLT32DBL];
247 1.1 christos case BFD_RELOC_390_GOTPCDBL:
248 1.1 christos return &elf_howto_table[(int) R_390_GOTPCDBL];
249 1.1 christos case BFD_RELOC_64:
250 1.1 christos return &elf_howto_table[(int) R_390_64];
251 1.1 christos case BFD_RELOC_64_PCREL:
252 1.1 christos return &elf_howto_table[(int) R_390_PC64];
253 1.1 christos case BFD_RELOC_390_GOT64:
254 1.1 christos return &elf_howto_table[(int) R_390_GOT64];
255 1.1 christos case BFD_RELOC_390_PLT64:
256 1.1 christos return &elf_howto_table[(int) R_390_PLT64];
257 1.1 christos case BFD_RELOC_390_GOTENT:
258 1.1 christos return &elf_howto_table[(int) R_390_GOTENT];
259 1.1 christos case BFD_RELOC_16_GOTOFF:
260 1.1 christos return &elf_howto_table[(int) R_390_GOTOFF16];
261 1.1 christos case BFD_RELOC_390_GOTOFF64:
262 1.1 christos return &elf_howto_table[(int) R_390_GOTOFF64];
263 1.1 christos case BFD_RELOC_390_GOTPLT12:
264 1.1 christos return &elf_howto_table[(int) R_390_GOTPLT12];
265 1.1 christos case BFD_RELOC_390_GOTPLT16:
266 1.1 christos return &elf_howto_table[(int) R_390_GOTPLT16];
267 1.1 christos case BFD_RELOC_390_GOTPLT32:
268 1.1 christos return &elf_howto_table[(int) R_390_GOTPLT32];
269 1.1 christos case BFD_RELOC_390_GOTPLT64:
270 1.1 christos return &elf_howto_table[(int) R_390_GOTPLT64];
271 1.1 christos case BFD_RELOC_390_GOTPLTENT:
272 1.1 christos return &elf_howto_table[(int) R_390_GOTPLTENT];
273 1.1 christos case BFD_RELOC_390_PLTOFF16:
274 1.1 christos return &elf_howto_table[(int) R_390_PLTOFF16];
275 1.1 christos case BFD_RELOC_390_PLTOFF32:
276 1.1 christos return &elf_howto_table[(int) R_390_PLTOFF32];
277 1.1 christos case BFD_RELOC_390_PLTOFF64:
278 1.1 christos return &elf_howto_table[(int) R_390_PLTOFF64];
279 1.1 christos case BFD_RELOC_390_TLS_LOAD:
280 1.1 christos return &elf_howto_table[(int) R_390_TLS_LOAD];
281 1.1 christos case BFD_RELOC_390_TLS_GDCALL:
282 1.1 christos return &elf_howto_table[(int) R_390_TLS_GDCALL];
283 1.1 christos case BFD_RELOC_390_TLS_LDCALL:
284 1.1 christos return &elf_howto_table[(int) R_390_TLS_LDCALL];
285 1.1 christos case BFD_RELOC_390_TLS_GD64:
286 1.1 christos return &elf_howto_table[(int) R_390_TLS_GD64];
287 1.1 christos case BFD_RELOC_390_TLS_GOTIE12:
288 1.1 christos return &elf_howto_table[(int) R_390_TLS_GOTIE12];
289 1.1 christos case BFD_RELOC_390_TLS_GOTIE64:
290 1.1 christos return &elf_howto_table[(int) R_390_TLS_GOTIE64];
291 1.1 christos case BFD_RELOC_390_TLS_LDM64:
292 1.1 christos return &elf_howto_table[(int) R_390_TLS_LDM64];
293 1.1 christos case BFD_RELOC_390_TLS_IE64:
294 1.1 christos return &elf_howto_table[(int) R_390_TLS_IE64];
295 1.1 christos case BFD_RELOC_390_TLS_IEENT:
296 1.1 christos return &elf_howto_table[(int) R_390_TLS_IEENT];
297 1.1 christos case BFD_RELOC_390_TLS_LE64:
298 1.1 christos return &elf_howto_table[(int) R_390_TLS_LE64];
299 1.1 christos case BFD_RELOC_390_TLS_LDO64:
300 1.1 christos return &elf_howto_table[(int) R_390_TLS_LDO64];
301 1.1 christos case BFD_RELOC_390_TLS_DTPMOD:
302 1.1 christos return &elf_howto_table[(int) R_390_TLS_DTPMOD];
303 1.1 christos case BFD_RELOC_390_TLS_DTPOFF:
304 1.1 christos return &elf_howto_table[(int) R_390_TLS_DTPOFF];
305 1.1 christos case BFD_RELOC_390_TLS_TPOFF:
306 1.1 christos return &elf_howto_table[(int) R_390_TLS_TPOFF];
307 1.1 christos case BFD_RELOC_390_20:
308 1.1 christos return &elf_howto_table[(int) R_390_20];
309 1.1 christos case BFD_RELOC_390_GOT20:
310 1.1 christos return &elf_howto_table[(int) R_390_GOT20];
311 1.1 christos case BFD_RELOC_390_GOTPLT20:
312 1.1 christos return &elf_howto_table[(int) R_390_GOTPLT20];
313 1.1 christos case BFD_RELOC_390_TLS_GOTIE20:
314 1.1 christos return &elf_howto_table[(int) R_390_TLS_GOTIE20];
315 1.1 christos case BFD_RELOC_390_IRELATIVE:
316 1.1 christos return &elf_howto_table[(int) R_390_IRELATIVE];
317 1.1 christos case BFD_RELOC_VTABLE_INHERIT:
318 1.1 christos return &elf64_s390_vtinherit_howto;
319 1.1 christos case BFD_RELOC_VTABLE_ENTRY:
320 1.1 christos return &elf64_s390_vtentry_howto;
321 1.1 christos default:
322 1.1 christos break;
323 1.1 christos }
324 1.1 christos return 0;
325 1.1 christos }
326 1.1 christos
327 1.1 christos static reloc_howto_type *
328 1.1 christos elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
329 1.1 christos const char *r_name)
330 1.1 christos {
331 1.1 christos unsigned int i;
332 1.1 christos
333 1.1 christos for (i = 0;
334 1.1 christos i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
335 1.1 christos i++)
336 1.1 christos if (elf_howto_table[i].name != NULL
337 1.1 christos && strcasecmp (elf_howto_table[i].name, r_name) == 0)
338 1.1 christos return &elf_howto_table[i];
339 1.1 christos
340 1.6 christos if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
341 1.6 christos return &elf64_s390_vtinherit_howto;
342 1.6 christos if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
343 1.6 christos return &elf64_s390_vtentry_howto;
344 1.1 christos
345 1.1 christos return NULL;
346 1.1 christos }
347 1.1 christos
348 1.1 christos /* We need to use ELF64_R_TYPE so we have our own copy of this function,
349 1.1 christos and elf64-s390.c has its own copy. */
350 1.1 christos
351 1.1 christos static void
352 1.1 christos elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
353 1.1 christos arelent *cache_ptr,
354 1.1 christos Elf_Internal_Rela *dst)
355 1.1 christos {
356 1.1 christos unsigned int r_type = ELF64_R_TYPE(dst->r_info);
357 1.1 christos switch (r_type)
358 1.1 christos {
359 1.1 christos case R_390_GNU_VTINHERIT:
360 1.1 christos cache_ptr->howto = &elf64_s390_vtinherit_howto;
361 1.1 christos break;
362 1.1 christos
363 1.1 christos case R_390_GNU_VTENTRY:
364 1.1 christos cache_ptr->howto = &elf64_s390_vtentry_howto;
365 1.1 christos break;
366 1.1 christos
367 1.1 christos default:
368 1.1 christos if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
369 1.1 christos {
370 1.1 christos (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
371 1.1 christos abfd, (int) r_type);
372 1.1 christos r_type = R_390_NONE;
373 1.1 christos }
374 1.1 christos cache_ptr->howto = &elf_howto_table[r_type];
375 1.1 christos }
376 1.1 christos }
377 1.1 christos
378 1.1 christos /* A relocation function which doesn't do anything. */
379 1.1 christos static bfd_reloc_status_type
380 1.1 christos s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
381 1.1 christos arelent *reloc_entry,
382 1.1 christos asymbol *symbol ATTRIBUTE_UNUSED,
383 1.1 christos void * data ATTRIBUTE_UNUSED,
384 1.1 christos asection *input_section,
385 1.1 christos bfd *output_bfd,
386 1.1 christos char **error_message ATTRIBUTE_UNUSED)
387 1.1 christos {
388 1.1 christos if (output_bfd)
389 1.1 christos reloc_entry->address += input_section->output_offset;
390 1.1 christos return bfd_reloc_ok;
391 1.1 christos }
392 1.1 christos
393 1.1 christos /* Handle the large displacement relocs. */
394 1.1 christos static bfd_reloc_status_type
395 1.1 christos s390_elf_ldisp_reloc (bfd *abfd,
396 1.1 christos arelent *reloc_entry,
397 1.1 christos asymbol *symbol,
398 1.1 christos void * data,
399 1.1 christos asection *input_section,
400 1.1 christos bfd *output_bfd,
401 1.1 christos char **error_message ATTRIBUTE_UNUSED)
402 1.1 christos {
403 1.1 christos reloc_howto_type *howto = reloc_entry->howto;
404 1.1 christos bfd_vma relocation;
405 1.1 christos bfd_vma insn;
406 1.1 christos
407 1.1 christos if (output_bfd != (bfd *) NULL
408 1.1 christos && (symbol->flags & BSF_SECTION_SYM) == 0
409 1.1 christos && (! howto->partial_inplace
410 1.1 christos || reloc_entry->addend == 0))
411 1.1 christos {
412 1.1 christos reloc_entry->address += input_section->output_offset;
413 1.1 christos return bfd_reloc_ok;
414 1.1 christos }
415 1.1 christos if (output_bfd != NULL)
416 1.1 christos return bfd_reloc_continue;
417 1.1 christos
418 1.1 christos if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
419 1.1 christos return bfd_reloc_outofrange;
420 1.1 christos
421 1.1 christos relocation = (symbol->value
422 1.1 christos + symbol->section->output_section->vma
423 1.1 christos + symbol->section->output_offset);
424 1.1 christos relocation += reloc_entry->addend;
425 1.1 christos if (howto->pc_relative)
426 1.1 christos {
427 1.1 christos relocation -= (input_section->output_section->vma
428 1.1 christos + input_section->output_offset);
429 1.1 christos relocation -= reloc_entry->address;
430 1.1 christos }
431 1.1 christos
432 1.1 christos insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
433 1.1 christos insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
434 1.1 christos bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
435 1.1 christos
436 1.1 christos if ((bfd_signed_vma) relocation < - 0x80000
437 1.1 christos || (bfd_signed_vma) relocation > 0x7ffff)
438 1.1 christos return bfd_reloc_overflow;
439 1.1 christos else
440 1.1 christos return bfd_reloc_ok;
441 1.1 christos }
442 1.1 christos
443 1.1 christos static bfd_boolean
444 1.1 christos elf_s390_is_local_label_name (bfd *abfd, const char *name)
445 1.1 christos {
446 1.1 christos if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
447 1.1 christos return TRUE;
448 1.1 christos
449 1.1 christos return _bfd_elf_is_local_label_name (abfd, name);
450 1.1 christos }
451 1.1 christos
452 1.1 christos /* Functions for the 390 ELF linker. */
453 1.1 christos
454 1.1 christos /* The name of the dynamic interpreter. This is put in the .interp
455 1.1 christos section. */
456 1.1 christos
457 1.1 christos #define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
458 1.1 christos
459 1.1 christos /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
460 1.1 christos copying dynamic variables from a shared lib into an app's dynbss
461 1.1 christos section, and instead use a dynamic relocation to point into the
462 1.1 christos shared lib. */
463 1.1 christos #define ELIMINATE_COPY_RELOCS 1
464 1.1 christos
465 1.1 christos /* The size in bytes of the first entry in the procedure linkage table. */
466 1.1 christos #define PLT_FIRST_ENTRY_SIZE 32
467 1.1 christos /* The size in bytes of an entry in the procedure linkage table. */
468 1.1 christos #define PLT_ENTRY_SIZE 32
469 1.1 christos
470 1.1 christos #define GOT_ENTRY_SIZE 8
471 1.1 christos
472 1.1 christos #define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela)
473 1.1 christos
474 1.1 christos /* The first three entries in a procedure linkage table are reserved,
475 1.1 christos and the initial contents are unimportant (we zero them out).
476 1.1 christos Subsequent entries look like this. See the SVR4 ABI 386
477 1.1 christos supplement to see how this works. */
478 1.1 christos
479 1.1 christos /* For the s390, simple addr offset can only be 0 - 4096.
480 1.1 christos To use the full 16777216 TB address space, several instructions
481 1.1 christos are needed to load an address in a register and execute
482 1.1 christos a branch( or just saving the address)
483 1.1 christos
484 1.1 christos Furthermore, only r 0 and 1 are free to use!!! */
485 1.1 christos
486 1.1 christos /* The first 3 words in the GOT are then reserved.
487 1.1 christos Word 0 is the address of the dynamic table.
488 1.1 christos Word 1 is a pointer to a structure describing the object
489 1.1 christos Word 2 is used to point to the loader entry address.
490 1.1 christos
491 1.1 christos The code for PLT entries looks like this:
492 1.1 christos
493 1.1 christos The GOT holds the address in the PLT to be executed.
494 1.1 christos The loader then gets:
495 1.6 christos 48(15) = Pointer to the structure describing the object.
496 1.6 christos 56(15) = Offset in symbol table
497 1.1 christos The loader must then find the module where the function is
498 1.1 christos and insert the address in the GOT.
499 1.1 christos
500 1.1 christos PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
501 1.1 christos LG 1,0(1) # 6 bytes Load address from GOT in r1
502 1.1 christos BCR 15,1 # 2 bytes Jump to address
503 1.1 christos RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
504 1.1 christos LGF 1,12(1) # 6 bytes Load offset in symbl table in r1
505 1.1 christos BRCL 15,-x # 6 bytes Jump to start of PLT
506 1.1 christos .long ? # 4 bytes offset into .rela.plt
507 1.1 christos
508 1.1 christos Total = 32 bytes per PLT entry
509 1.1 christos Fixup at offset 2: relative address to GOT entry
510 1.1 christos Fixup at offset 22: relative branch to PLT0
511 1.1 christos Fixup at offset 28: 32 bit offset into .rela.plt
512 1.1 christos
513 1.1 christos A 32 bit offset into the symbol table is enough. It allows for
514 1.1 christos .rela.plt sections up to a size of 2 gigabyte. A single dynamic
515 1.1 christos object (the main program, any shared library) is limited to 4GB in
516 1.1 christos size. Having a .rela.plt of 2GB would already make the .plt
517 1.1 christos section bigger than 8GB. */
518 1.1 christos
519 1.1 christos static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] =
520 1.1 christos {
521 1.1 christos 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
522 1.1 christos 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */
523 1.1 christos 0x07, 0xf1, /* br %r1 */
524 1.1 christos 0x0d, 0x10, /* basr %r1,%r0 */
525 1.1 christos 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */
526 1.1 christos 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */
527 1.1 christos 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */
528 1.1 christos };
529 1.1 christos
530 1.1 christos /* The first PLT entry pushes the offset into the symbol table
531 1.1 christos from R1 onto the stack at 56(15) and the loader object info
532 1.1 christos at 48(15), loads the loader address in R1 and jumps to it. */
533 1.1 christos
534 1.1 christos /* The first entry in the PLT:
535 1.1 christos
536 1.1 christos PLT0:
537 1.1 christos STG 1,56(15) # r1 contains the offset into the symbol table
538 1.1 christos LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
539 1.1 christos MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
540 1.1 christos LG 1,16(1) # get entry address of loader
541 1.1 christos BCR 15,1 # jump to loader
542 1.1 christos
543 1.1 christos Fixup at offset 8: relative address to start of GOT. */
544 1.1 christos
545 1.1 christos static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] =
546 1.1 christos {
547 1.1 christos 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */
548 1.1 christos 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
549 1.1 christos 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */
550 1.1 christos 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */
551 1.1 christos 0x07, 0xf1, /* br %r1 */
552 1.1 christos 0x07, 0x00, /* nopr %r0 */
553 1.1 christos 0x07, 0x00, /* nopr %r0 */
554 1.1 christos 0x07, 0x00 /* nopr %r0 */
555 1.1 christos };
556 1.1 christos
557 1.1 christos
558 1.1 christos /* s390 ELF linker hash entry. */
559 1.1 christos
560 1.1 christos struct elf_s390_link_hash_entry
561 1.1 christos {
562 1.1 christos struct elf_link_hash_entry elf;
563 1.1 christos
564 1.1 christos /* Track dynamic relocs copied for this symbol. */
565 1.1 christos struct elf_dyn_relocs *dyn_relocs;
566 1.1 christos
567 1.1 christos /* Number of GOTPLT references for a function. */
568 1.1 christos bfd_signed_vma gotplt_refcount;
569 1.1 christos
570 1.1 christos #define GOT_UNKNOWN 0
571 1.1 christos #define GOT_NORMAL 1
572 1.1 christos #define GOT_TLS_GD 2
573 1.1 christos #define GOT_TLS_IE 3
574 1.1 christos #define GOT_TLS_IE_NLT 3
575 1.1 christos unsigned char tls_type;
576 1.1 christos
577 1.1 christos /* For pointer equality reasons we might need to change the symbol
578 1.1 christos type from STT_GNU_IFUNC to STT_FUNC together with its value and
579 1.1 christos section entry. So after alloc_dynrelocs only these values should
580 1.1 christos be used. In order to check whether a symbol is IFUNC use
581 1.1 christos s390_is_ifunc_symbol_p. */
582 1.1 christos bfd_vma ifunc_resolver_address;
583 1.1 christos asection *ifunc_resolver_section;
584 1.1 christos };
585 1.1 christos
586 1.1 christos #define elf_s390_hash_entry(ent) \
587 1.1 christos ((struct elf_s390_link_hash_entry *)(ent))
588 1.1 christos
589 1.1 christos /* This structure represents an entry in the local PLT list needed for
590 1.1 christos local IFUNC symbols. */
591 1.1 christos struct plt_entry
592 1.1 christos {
593 1.1 christos /* The section of the local symbol.
594 1.1 christos Set in relocate_section and used in finish_dynamic_sections. */
595 1.1 christos asection *sec;
596 1.1 christos
597 1.1 christos union
598 1.1 christos {
599 1.1 christos bfd_signed_vma refcount;
600 1.1 christos bfd_vma offset;
601 1.1 christos } plt;
602 1.1 christos };
603 1.1 christos
604 1.1 christos /* NOTE: Keep this structure in sync with
605 1.1 christos the one declared in elf32-s390.c. */
606 1.1 christos struct elf_s390_obj_tdata
607 1.1 christos {
608 1.1 christos struct elf_obj_tdata root;
609 1.1 christos
610 1.1 christos /* A local PLT is needed for ifunc symbols. */
611 1.1 christos struct plt_entry *local_plt;
612 1.1 christos
613 1.1 christos /* TLS type for each local got entry. */
614 1.1 christos char *local_got_tls_type;
615 1.1 christos };
616 1.1 christos
617 1.1 christos #define elf_s390_tdata(abfd) \
618 1.1 christos ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
619 1.1 christos
620 1.1 christos #define elf_s390_local_plt(abfd) \
621 1.1 christos (elf_s390_tdata (abfd)->local_plt)
622 1.1 christos
623 1.1 christos #define elf_s390_local_got_tls_type(abfd) \
624 1.1 christos (elf_s390_tdata (abfd)->local_got_tls_type)
625 1.1 christos
626 1.1 christos #define is_s390_elf(bfd) \
627 1.1 christos (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
628 1.1 christos && elf_tdata (bfd) != NULL \
629 1.1 christos && elf_object_id (bfd) == S390_ELF_DATA)
630 1.1 christos
631 1.1 christos static bfd_boolean
632 1.1 christos elf_s390_mkobject (bfd *abfd)
633 1.1 christos {
634 1.1 christos return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
635 1.1 christos S390_ELF_DATA);
636 1.1 christos }
637 1.1 christos
638 1.1 christos static bfd_boolean
639 1.1 christos elf_s390_object_p (bfd *abfd)
640 1.1 christos {
641 1.1 christos /* Set the right machine number for an s390 elf32 file. */
642 1.1 christos return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
643 1.1 christos }
644 1.1 christos
645 1.1 christos /* s390 ELF linker hash table. */
646 1.1 christos
647 1.1 christos struct elf_s390_link_hash_table
648 1.1 christos {
649 1.1 christos struct elf_link_hash_table elf;
650 1.1 christos
651 1.1 christos /* Short-cuts to get to dynamic linker sections. */
652 1.1 christos asection *sdynbss;
653 1.1 christos asection *srelbss;
654 1.1 christos asection *irelifunc;
655 1.1 christos
656 1.1 christos union {
657 1.1 christos bfd_signed_vma refcount;
658 1.1 christos bfd_vma offset;
659 1.1 christos } tls_ldm_got;
660 1.1 christos
661 1.1 christos /* Small local sym cache. */
662 1.1 christos struct sym_cache sym_cache;
663 1.1 christos };
664 1.1 christos
665 1.1 christos /* Get the s390 ELF linker hash table from a link_info structure. */
666 1.1 christos
667 1.1 christos #define elf_s390_hash_table(p) \
668 1.1 christos (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
669 1.1 christos == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
670 1.1 christos
671 1.1 christos #define ELF64 1
672 1.1 christos #include "elf-s390-common.c"
673 1.1 christos
674 1.1 christos /* Create an entry in an s390 ELF linker hash table. */
675 1.1 christos
676 1.1 christos static struct bfd_hash_entry *
677 1.1 christos link_hash_newfunc (struct bfd_hash_entry *entry,
678 1.1 christos struct bfd_hash_table *table,
679 1.1 christos const char *string)
680 1.1 christos {
681 1.1 christos /* Allocate the structure if it has not already been allocated by a
682 1.1 christos subclass. */
683 1.1 christos if (entry == NULL)
684 1.1 christos {
685 1.1 christos entry = bfd_hash_allocate (table,
686 1.1 christos sizeof (struct elf_s390_link_hash_entry));
687 1.1 christos if (entry == NULL)
688 1.1 christos return entry;
689 1.1 christos }
690 1.1 christos
691 1.1 christos /* Call the allocation method of the superclass. */
692 1.1 christos entry = _bfd_elf_link_hash_newfunc (entry, table, string);
693 1.1 christos if (entry != NULL)
694 1.1 christos {
695 1.1 christos struct elf_s390_link_hash_entry *eh;
696 1.1 christos
697 1.1 christos eh = (struct elf_s390_link_hash_entry *) entry;
698 1.1 christos eh->dyn_relocs = NULL;
699 1.1 christos eh->gotplt_refcount = 0;
700 1.1 christos eh->tls_type = GOT_UNKNOWN;
701 1.1 christos eh->ifunc_resolver_address = 0;
702 1.1 christos eh->ifunc_resolver_section = NULL;
703 1.1 christos }
704 1.1 christos
705 1.1 christos return entry;
706 1.1 christos }
707 1.1 christos
708 1.1 christos /* Create an s390 ELF linker hash table. */
709 1.1 christos
710 1.1 christos static struct bfd_link_hash_table *
711 1.1 christos elf_s390_link_hash_table_create (bfd *abfd)
712 1.1 christos {
713 1.1 christos struct elf_s390_link_hash_table *ret;
714 1.1 christos bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
715 1.1 christos
716 1.1 christos ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
717 1.1 christos if (ret == NULL)
718 1.1 christos return NULL;
719 1.1 christos
720 1.1 christos if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
721 1.1 christos sizeof (struct elf_s390_link_hash_entry),
722 1.1 christos S390_ELF_DATA))
723 1.1 christos {
724 1.1 christos free (ret);
725 1.1 christos return NULL;
726 1.1 christos }
727 1.1 christos
728 1.1 christos return &ret->elf.root;
729 1.1 christos }
730 1.1 christos
731 1.1 christos /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
732 1.1 christos shortcuts to them in our hash table. */
733 1.1 christos
734 1.1 christos static bfd_boolean
735 1.1 christos create_got_section (bfd *dynobj,
736 1.1 christos struct bfd_link_info *info)
737 1.1 christos {
738 1.1 christos struct elf_s390_link_hash_table *htab;
739 1.1 christos
740 1.1 christos if (! _bfd_elf_create_got_section (dynobj, info))
741 1.1 christos return FALSE;
742 1.1 christos
743 1.1 christos htab = elf_s390_hash_table (info);
744 1.1 christos if (htab == NULL)
745 1.1 christos return FALSE;
746 1.1 christos
747 1.1 christos htab->elf.sgot = bfd_get_linker_section (dynobj, ".got");
748 1.1 christos htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
749 1.1 christos htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got");
750 1.1 christos if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot)
751 1.1 christos abort ();
752 1.1 christos return TRUE;
753 1.1 christos }
754 1.1 christos
755 1.1 christos /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
756 1.1 christos .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
757 1.1 christos hash table. */
758 1.1 christos
759 1.1 christos static bfd_boolean
760 1.1 christos elf_s390_create_dynamic_sections (bfd *dynobj,
761 1.1 christos struct bfd_link_info *info)
762 1.1 christos {
763 1.1 christos struct elf_s390_link_hash_table *htab;
764 1.1 christos
765 1.1 christos htab = elf_s390_hash_table (info);
766 1.1 christos if (htab == NULL)
767 1.1 christos return FALSE;
768 1.1 christos
769 1.1 christos if (!htab->elf.sgot && !create_got_section (dynobj, info))
770 1.1 christos return FALSE;
771 1.1 christos
772 1.1 christos if (!_bfd_elf_create_dynamic_sections (dynobj, info))
773 1.1 christos return FALSE;
774 1.1 christos
775 1.1 christos htab->elf.splt = bfd_get_linker_section (dynobj, ".plt");
776 1.1 christos htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt");
777 1.1 christos htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
778 1.6 christos if (!bfd_link_pic (info))
779 1.1 christos htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
780 1.1 christos
781 1.1 christos if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
782 1.6 christos || (!bfd_link_pic (info) && !htab->srelbss))
783 1.1 christos abort ();
784 1.1 christos
785 1.1 christos return TRUE;
786 1.1 christos }
787 1.1 christos
788 1.1 christos /* Copy the extra info we tack onto an elf_link_hash_entry. */
789 1.1 christos
790 1.1 christos static void
791 1.1 christos elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
792 1.1 christos struct elf_link_hash_entry *dir,
793 1.1 christos struct elf_link_hash_entry *ind)
794 1.1 christos {
795 1.1 christos struct elf_s390_link_hash_entry *edir, *eind;
796 1.1 christos
797 1.1 christos edir = (struct elf_s390_link_hash_entry *) dir;
798 1.1 christos eind = (struct elf_s390_link_hash_entry *) ind;
799 1.1 christos
800 1.1 christos if (eind->dyn_relocs != NULL)
801 1.1 christos {
802 1.1 christos if (edir->dyn_relocs != NULL)
803 1.1 christos {
804 1.1 christos struct elf_dyn_relocs **pp;
805 1.1 christos struct elf_dyn_relocs *p;
806 1.1 christos
807 1.1 christos /* Add reloc counts against the indirect sym to the direct sym
808 1.1 christos list. Merge any entries against the same section. */
809 1.1 christos for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
810 1.1 christos {
811 1.1 christos struct elf_dyn_relocs *q;
812 1.1 christos
813 1.1 christos for (q = edir->dyn_relocs; q != NULL; q = q->next)
814 1.1 christos if (q->sec == p->sec)
815 1.1 christos {
816 1.1 christos q->pc_count += p->pc_count;
817 1.1 christos q->count += p->count;
818 1.1 christos *pp = p->next;
819 1.1 christos break;
820 1.1 christos }
821 1.1 christos if (q == NULL)
822 1.1 christos pp = &p->next;
823 1.1 christos }
824 1.1 christos *pp = edir->dyn_relocs;
825 1.1 christos }
826 1.1 christos
827 1.1 christos edir->dyn_relocs = eind->dyn_relocs;
828 1.1 christos eind->dyn_relocs = NULL;
829 1.1 christos }
830 1.1 christos
831 1.1 christos if (ind->root.type == bfd_link_hash_indirect
832 1.1 christos && dir->got.refcount <= 0)
833 1.1 christos {
834 1.1 christos edir->tls_type = eind->tls_type;
835 1.1 christos eind->tls_type = GOT_UNKNOWN;
836 1.1 christos }
837 1.1 christos
838 1.1 christos if (ELIMINATE_COPY_RELOCS
839 1.1 christos && ind->root.type != bfd_link_hash_indirect
840 1.1 christos && dir->dynamic_adjusted)
841 1.1 christos {
842 1.1 christos /* If called to transfer flags for a weakdef during processing
843 1.1 christos of elf_adjust_dynamic_symbol, don't copy non_got_ref.
844 1.1 christos We clear it ourselves for ELIMINATE_COPY_RELOCS. */
845 1.1 christos dir->ref_dynamic |= ind->ref_dynamic;
846 1.1 christos dir->ref_regular |= ind->ref_regular;
847 1.1 christos dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
848 1.1 christos dir->needs_plt |= ind->needs_plt;
849 1.1 christos }
850 1.1 christos else
851 1.1 christos _bfd_elf_link_hash_copy_indirect (info, dir, ind);
852 1.1 christos }
853 1.1 christos
854 1.1 christos static int
855 1.1 christos elf_s390_tls_transition (struct bfd_link_info *info,
856 1.1 christos int r_type,
857 1.1 christos int is_local)
858 1.1 christos {
859 1.6 christos if (bfd_link_pic (info))
860 1.1 christos return r_type;
861 1.1 christos
862 1.1 christos switch (r_type)
863 1.1 christos {
864 1.1 christos case R_390_TLS_GD64:
865 1.1 christos case R_390_TLS_IE64:
866 1.1 christos if (is_local)
867 1.1 christos return R_390_TLS_LE64;
868 1.1 christos return R_390_TLS_IE64;
869 1.1 christos case R_390_TLS_GOTIE64:
870 1.1 christos if (is_local)
871 1.1 christos return R_390_TLS_LE64;
872 1.1 christos return R_390_TLS_GOTIE64;
873 1.1 christos case R_390_TLS_LDM64:
874 1.1 christos return R_390_TLS_LE64;
875 1.1 christos }
876 1.1 christos
877 1.1 christos return r_type;
878 1.1 christos }
879 1.1 christos
880 1.1 christos /* Look through the relocs for a section during the first phase, and
881 1.1 christos allocate space in the global offset table or procedure linkage
882 1.1 christos table. */
883 1.1 christos
884 1.1 christos static bfd_boolean
885 1.1 christos elf_s390_check_relocs (bfd *abfd,
886 1.1 christos struct bfd_link_info *info,
887 1.1 christos asection *sec,
888 1.1 christos const Elf_Internal_Rela *relocs)
889 1.1 christos {
890 1.1 christos struct elf_s390_link_hash_table *htab;
891 1.1 christos Elf_Internal_Shdr *symtab_hdr;
892 1.1 christos struct elf_link_hash_entry **sym_hashes;
893 1.1 christos const Elf_Internal_Rela *rel;
894 1.1 christos const Elf_Internal_Rela *rel_end;
895 1.1 christos asection *sreloc;
896 1.1 christos bfd_signed_vma *local_got_refcounts;
897 1.1 christos int tls_type, old_tls_type;
898 1.1 christos
899 1.6 christos if (bfd_link_relocatable (info))
900 1.1 christos return TRUE;
901 1.1 christos
902 1.1 christos BFD_ASSERT (is_s390_elf (abfd));
903 1.1 christos
904 1.1 christos htab = elf_s390_hash_table (info);
905 1.1 christos if (htab == NULL)
906 1.1 christos return FALSE;
907 1.1 christos
908 1.1 christos symtab_hdr = &elf_symtab_hdr (abfd);
909 1.1 christos sym_hashes = elf_sym_hashes (abfd);
910 1.1 christos local_got_refcounts = elf_local_got_refcounts (abfd);
911 1.1 christos
912 1.1 christos sreloc = NULL;
913 1.1 christos
914 1.1 christos rel_end = relocs + sec->reloc_count;
915 1.1 christos for (rel = relocs; rel < rel_end; rel++)
916 1.1 christos {
917 1.1 christos unsigned int r_type;
918 1.1 christos unsigned long r_symndx;
919 1.1 christos struct elf_link_hash_entry *h;
920 1.1 christos Elf_Internal_Sym *isym;
921 1.1 christos
922 1.1 christos r_symndx = ELF64_R_SYM (rel->r_info);
923 1.1 christos
924 1.1 christos if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
925 1.1 christos {
926 1.1 christos (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
927 1.1 christos abfd,
928 1.1 christos r_symndx);
929 1.1 christos return FALSE;
930 1.1 christos }
931 1.1 christos
932 1.1 christos if (r_symndx < symtab_hdr->sh_info)
933 1.1 christos {
934 1.1 christos /* A local symbol. */
935 1.1 christos isym = bfd_sym_from_r_symndx (&htab->sym_cache,
936 1.1 christos abfd, r_symndx);
937 1.1 christos if (isym == NULL)
938 1.1 christos return FALSE;
939 1.1 christos
940 1.1 christos if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
941 1.1 christos {
942 1.1 christos struct plt_entry *plt;
943 1.1 christos
944 1.1 christos if (htab->elf.dynobj == NULL)
945 1.1 christos htab->elf.dynobj = abfd;
946 1.1 christos
947 1.1 christos if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
948 1.1 christos return FALSE;
949 1.1 christos
950 1.1 christos if (local_got_refcounts == NULL)
951 1.1 christos {
952 1.1 christos if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
953 1.1 christos return FALSE;
954 1.1 christos local_got_refcounts = elf_local_got_refcounts (abfd);
955 1.1 christos }
956 1.1 christos plt = elf_s390_local_plt (abfd);
957 1.1 christos plt[r_symndx].plt.refcount++;
958 1.1 christos }
959 1.1 christos h = NULL;
960 1.1 christos }
961 1.1 christos else
962 1.1 christos {
963 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
964 1.1 christos while (h->root.type == bfd_link_hash_indirect
965 1.1 christos || h->root.type == bfd_link_hash_warning)
966 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
967 1.1 christos
968 1.1 christos /* PR15323, ref flags aren't set for references in the same
969 1.1 christos object. */
970 1.1 christos h->root.non_ir_ref = 1;
971 1.1 christos }
972 1.1 christos
973 1.1 christos /* Create got section and local_got_refcounts array if they
974 1.1 christos are needed. */
975 1.1 christos r_type = elf_s390_tls_transition (info,
976 1.1 christos ELF64_R_TYPE (rel->r_info),
977 1.1 christos h == NULL);
978 1.1 christos switch (r_type)
979 1.1 christos {
980 1.1 christos case R_390_GOT12:
981 1.1 christos case R_390_GOT16:
982 1.1 christos case R_390_GOT20:
983 1.1 christos case R_390_GOT32:
984 1.1 christos case R_390_GOT64:
985 1.1 christos case R_390_GOTENT:
986 1.1 christos case R_390_GOTPLT12:
987 1.1 christos case R_390_GOTPLT16:
988 1.1 christos case R_390_GOTPLT20:
989 1.1 christos case R_390_GOTPLT32:
990 1.1 christos case R_390_GOTPLT64:
991 1.1 christos case R_390_GOTPLTENT:
992 1.1 christos case R_390_TLS_GD64:
993 1.1 christos case R_390_TLS_GOTIE12:
994 1.1 christos case R_390_TLS_GOTIE20:
995 1.1 christos case R_390_TLS_GOTIE64:
996 1.1 christos case R_390_TLS_IEENT:
997 1.1 christos case R_390_TLS_IE64:
998 1.1 christos case R_390_TLS_LDM64:
999 1.1 christos if (h == NULL
1000 1.1 christos && local_got_refcounts == NULL)
1001 1.1 christos {
1002 1.1 christos if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
1003 1.1 christos return FALSE;
1004 1.1 christos local_got_refcounts = elf_local_got_refcounts (abfd);
1005 1.1 christos }
1006 1.1 christos
1007 1.1 christos /* Fall through. */
1008 1.1 christos case R_390_GOTOFF16:
1009 1.1 christos case R_390_GOTOFF32:
1010 1.1 christos case R_390_GOTOFF64:
1011 1.1 christos case R_390_GOTPC:
1012 1.1 christos case R_390_GOTPCDBL:
1013 1.1 christos if (htab->elf.sgot == NULL)
1014 1.1 christos {
1015 1.1 christos if (htab->elf.dynobj == NULL)
1016 1.1 christos htab->elf.dynobj = abfd;
1017 1.1 christos if (!create_got_section (htab->elf.dynobj, info))
1018 1.1 christos return FALSE;
1019 1.1 christos }
1020 1.1 christos }
1021 1.1 christos
1022 1.1 christos if (h != NULL)
1023 1.1 christos {
1024 1.1 christos if (htab->elf.dynobj == NULL)
1025 1.1 christos htab->elf.dynobj = abfd;
1026 1.1 christos if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
1027 1.1 christos return FALSE;
1028 1.1 christos
1029 1.1 christos /* Make sure an IFUNC symbol defined in a non-shared object
1030 1.1 christos always gets a PLT slot. */
1031 1.1 christos if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1032 1.1 christos {
1033 1.1 christos /* The symbol is called by the dynamic loader in order
1034 1.1 christos to resolve the relocation. So it is in fact also
1035 1.1 christos referenced. */
1036 1.1 christos h->ref_regular = 1;
1037 1.1 christos h->needs_plt = 1;
1038 1.1 christos }
1039 1.1 christos }
1040 1.1 christos
1041 1.1 christos switch (r_type)
1042 1.1 christos {
1043 1.1 christos case R_390_GOTPC:
1044 1.1 christos case R_390_GOTPCDBL:
1045 1.1 christos /* These relocs do not need a GOT slot. They just load the
1046 1.1 christos GOT pointer itself or address something else relative to
1047 1.1 christos the GOT. Since the GOT pointer has been set up above we
1048 1.1 christos are done. */
1049 1.1 christos break;
1050 1.6 christos case R_390_GOTOFF16:
1051 1.6 christos case R_390_GOTOFF32:
1052 1.6 christos case R_390_GOTOFF64:
1053 1.6 christos if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
1054 1.6 christos break;
1055 1.1 christos
1056 1.1 christos case R_390_PLT12DBL:
1057 1.1 christos case R_390_PLT16DBL:
1058 1.1 christos case R_390_PLT24DBL:
1059 1.1 christos case R_390_PLT32:
1060 1.1 christos case R_390_PLT32DBL:
1061 1.1 christos case R_390_PLT64:
1062 1.1 christos case R_390_PLTOFF16:
1063 1.1 christos case R_390_PLTOFF32:
1064 1.1 christos case R_390_PLTOFF64:
1065 1.1 christos /* This symbol requires a procedure linkage table entry. We
1066 1.1 christos actually build the entry in adjust_dynamic_symbol,
1067 1.1 christos because this might be a case of linking PIC code which is
1068 1.1 christos never referenced by a dynamic object, in which case we
1069 1.1 christos don't need to generate a procedure linkage table entry
1070 1.1 christos after all. */
1071 1.1 christos
1072 1.1 christos /* If this is a local symbol, we resolve it directly without
1073 1.1 christos creating a procedure linkage table entry. */
1074 1.1 christos if (h != NULL)
1075 1.1 christos {
1076 1.1 christos h->needs_plt = 1;
1077 1.1 christos h->plt.refcount += 1;
1078 1.1 christos }
1079 1.1 christos break;
1080 1.1 christos
1081 1.1 christos case R_390_GOTPLT12:
1082 1.1 christos case R_390_GOTPLT16:
1083 1.1 christos case R_390_GOTPLT20:
1084 1.1 christos case R_390_GOTPLT32:
1085 1.1 christos case R_390_GOTPLT64:
1086 1.1 christos case R_390_GOTPLTENT:
1087 1.1 christos /* This symbol requires either a procedure linkage table entry
1088 1.1 christos or an entry in the local got. We actually build the entry
1089 1.1 christos in adjust_dynamic_symbol because whether this is really a
1090 1.1 christos global reference can change and with it the fact if we have
1091 1.1 christos to create a plt entry or a local got entry. To be able to
1092 1.1 christos make a once global symbol a local one we have to keep track
1093 1.1 christos of the number of gotplt references that exist for this
1094 1.1 christos symbol. */
1095 1.1 christos if (h != NULL)
1096 1.1 christos {
1097 1.1 christos ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1098 1.1 christos h->needs_plt = 1;
1099 1.1 christos h->plt.refcount += 1;
1100 1.1 christos }
1101 1.1 christos else
1102 1.1 christos local_got_refcounts[r_symndx] += 1;
1103 1.1 christos break;
1104 1.1 christos
1105 1.1 christos case R_390_TLS_LDM64:
1106 1.1 christos htab->tls_ldm_got.refcount += 1;
1107 1.1 christos break;
1108 1.1 christos
1109 1.1 christos case R_390_TLS_IE64:
1110 1.1 christos case R_390_TLS_GOTIE12:
1111 1.1 christos case R_390_TLS_GOTIE20:
1112 1.1 christos case R_390_TLS_GOTIE64:
1113 1.1 christos case R_390_TLS_IEENT:
1114 1.6 christos if (bfd_link_pic (info))
1115 1.1 christos info->flags |= DF_STATIC_TLS;
1116 1.1 christos /* Fall through */
1117 1.1 christos
1118 1.1 christos case R_390_GOT12:
1119 1.1 christos case R_390_GOT16:
1120 1.1 christos case R_390_GOT20:
1121 1.1 christos case R_390_GOT32:
1122 1.1 christos case R_390_GOT64:
1123 1.1 christos case R_390_GOTENT:
1124 1.1 christos case R_390_TLS_GD64:
1125 1.1 christos /* This symbol requires a global offset table entry. */
1126 1.1 christos switch (r_type)
1127 1.1 christos {
1128 1.1 christos default:
1129 1.1 christos case R_390_GOT12:
1130 1.1 christos case R_390_GOT16:
1131 1.1 christos case R_390_GOT20:
1132 1.1 christos case R_390_GOT32:
1133 1.1 christos case R_390_GOTENT:
1134 1.1 christos tls_type = GOT_NORMAL;
1135 1.1 christos break;
1136 1.1 christos case R_390_TLS_GD64:
1137 1.1 christos tls_type = GOT_TLS_GD;
1138 1.1 christos break;
1139 1.1 christos case R_390_TLS_IE64:
1140 1.1 christos case R_390_TLS_GOTIE64:
1141 1.1 christos tls_type = GOT_TLS_IE;
1142 1.1 christos break;
1143 1.1 christos case R_390_TLS_GOTIE12:
1144 1.1 christos case R_390_TLS_GOTIE20:
1145 1.1 christos case R_390_TLS_IEENT:
1146 1.1 christos tls_type = GOT_TLS_IE_NLT;
1147 1.1 christos break;
1148 1.1 christos }
1149 1.1 christos
1150 1.1 christos if (h != NULL)
1151 1.1 christos {
1152 1.1 christos h->got.refcount += 1;
1153 1.1 christos old_tls_type = elf_s390_hash_entry(h)->tls_type;
1154 1.1 christos }
1155 1.1 christos else
1156 1.1 christos {
1157 1.1 christos local_got_refcounts[r_symndx] += 1;
1158 1.1 christos old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1159 1.1 christos }
1160 1.1 christos /* If a TLS symbol is accessed using IE at least once,
1161 1.1 christos there is no point to use dynamic model for it. */
1162 1.1 christos if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1163 1.1 christos {
1164 1.1 christos if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1165 1.1 christos {
1166 1.1 christos (*_bfd_error_handler)
1167 1.1 christos (_("%B: `%s' accessed both as normal and thread local symbol"),
1168 1.1 christos abfd, h->root.root.string);
1169 1.1 christos return FALSE;
1170 1.1 christos }
1171 1.1 christos if (old_tls_type > tls_type)
1172 1.1 christos tls_type = old_tls_type;
1173 1.1 christos }
1174 1.1 christos
1175 1.1 christos if (old_tls_type != tls_type)
1176 1.1 christos {
1177 1.1 christos if (h != NULL)
1178 1.1 christos elf_s390_hash_entry (h)->tls_type = tls_type;
1179 1.1 christos else
1180 1.1 christos elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1181 1.1 christos }
1182 1.1 christos
1183 1.1 christos if (r_type != R_390_TLS_IE64)
1184 1.1 christos break;
1185 1.1 christos /* Fall through */
1186 1.1 christos
1187 1.1 christos case R_390_TLS_LE64:
1188 1.3 christos /* For static linking and executables this reloc will be
1189 1.3 christos calculated at linktime otherwise a TLS_TPOFF runtime
1190 1.3 christos reloc will be generated. */
1191 1.6 christos if (r_type == R_390_TLS_LE64 && bfd_link_pie (info))
1192 1.3 christos break;
1193 1.3 christos
1194 1.6 christos if (!bfd_link_pic (info))
1195 1.1 christos break;
1196 1.1 christos info->flags |= DF_STATIC_TLS;
1197 1.1 christos /* Fall through */
1198 1.1 christos
1199 1.1 christos case R_390_8:
1200 1.1 christos case R_390_16:
1201 1.1 christos case R_390_32:
1202 1.1 christos case R_390_64:
1203 1.1 christos case R_390_PC12DBL:
1204 1.1 christos case R_390_PC16:
1205 1.1 christos case R_390_PC16DBL:
1206 1.1 christos case R_390_PC24DBL:
1207 1.1 christos case R_390_PC32:
1208 1.1 christos case R_390_PC32DBL:
1209 1.1 christos case R_390_PC64:
1210 1.6 christos if (h != NULL && bfd_link_executable (info))
1211 1.1 christos {
1212 1.1 christos /* If this reloc is in a read-only section, we might
1213 1.1 christos need a copy reloc. We can't check reliably at this
1214 1.1 christos stage whether the section is read-only, as input
1215 1.1 christos sections have not yet been mapped to output sections.
1216 1.1 christos Tentatively set the flag for now, and correct in
1217 1.1 christos adjust_dynamic_symbol. */
1218 1.1 christos h->non_got_ref = 1;
1219 1.1 christos
1220 1.6 christos if (!bfd_link_pic (info))
1221 1.1 christos {
1222 1.1 christos /* We may need a .plt entry if the function this reloc
1223 1.1 christos refers to is in a shared lib. */
1224 1.1 christos h->plt.refcount += 1;
1225 1.1 christos }
1226 1.1 christos }
1227 1.1 christos
1228 1.1 christos /* If we are creating a shared library, and this is a reloc
1229 1.1 christos against a global symbol, or a non PC relative reloc
1230 1.1 christos against a local symbol, then we need to copy the reloc
1231 1.1 christos into the shared library. However, if we are linking with
1232 1.1 christos -Bsymbolic, we do not need to copy a reloc against a
1233 1.1 christos global symbol which is defined in an object we are
1234 1.1 christos including in the link (i.e., DEF_REGULAR is set). At
1235 1.1 christos this point we have not seen all the input files, so it is
1236 1.1 christos possible that DEF_REGULAR is not set now but will be set
1237 1.1 christos later (it is never cleared). In case of a weak definition,
1238 1.1 christos DEF_REGULAR may be cleared later by a strong definition in
1239 1.1 christos a shared library. We account for that possibility below by
1240 1.1 christos storing information in the relocs_copied field of the hash
1241 1.1 christos table entry. A similar situation occurs when creating
1242 1.1 christos shared libraries and symbol visibility changes render the
1243 1.1 christos symbol local.
1244 1.1 christos
1245 1.1 christos If on the other hand, we are creating an executable, we
1246 1.1 christos may need to keep relocations for symbols satisfied by a
1247 1.1 christos dynamic library if we manage to avoid copy relocs for the
1248 1.1 christos symbol. */
1249 1.6 christos if ((bfd_link_pic (info)
1250 1.1 christos && (sec->flags & SEC_ALLOC) != 0
1251 1.1 christos && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
1252 1.1 christos && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
1253 1.1 christos && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
1254 1.1 christos && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL
1255 1.1 christos && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1256 1.1 christos && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1257 1.1 christos && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1258 1.1 christos || (h != NULL
1259 1.1 christos && (! SYMBOLIC_BIND (info, h)
1260 1.1 christos || h->root.type == bfd_link_hash_defweak
1261 1.1 christos || !h->def_regular))))
1262 1.1 christos || (ELIMINATE_COPY_RELOCS
1263 1.6 christos && !bfd_link_pic (info)
1264 1.1 christos && (sec->flags & SEC_ALLOC) != 0
1265 1.1 christos && h != NULL
1266 1.1 christos && (h->root.type == bfd_link_hash_defweak
1267 1.1 christos || !h->def_regular)))
1268 1.1 christos {
1269 1.1 christos struct elf_dyn_relocs *p;
1270 1.1 christos struct elf_dyn_relocs **head;
1271 1.1 christos
1272 1.1 christos /* We must copy these reloc types into the output file.
1273 1.1 christos Create a reloc section in dynobj and make room for
1274 1.1 christos this reloc. */
1275 1.1 christos if (sreloc == NULL)
1276 1.1 christos {
1277 1.1 christos if (htab->elf.dynobj == NULL)
1278 1.1 christos htab->elf.dynobj = abfd;
1279 1.1 christos
1280 1.1 christos sreloc = _bfd_elf_make_dynamic_reloc_section
1281 1.1 christos (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
1282 1.1 christos
1283 1.1 christos if (sreloc == NULL)
1284 1.1 christos return FALSE;
1285 1.1 christos }
1286 1.1 christos
1287 1.1 christos /* If this is a global symbol, we count the number of
1288 1.1 christos relocations we need for this symbol. */
1289 1.1 christos if (h != NULL)
1290 1.1 christos {
1291 1.1 christos head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1292 1.1 christos }
1293 1.1 christos else
1294 1.1 christos {
1295 1.1 christos /* Track dynamic relocs needed for local syms too.
1296 1.1 christos We really need local syms available to do this
1297 1.1 christos easily. Oh well. */
1298 1.1 christos asection *s;
1299 1.1 christos void *vpp;
1300 1.1 christos
1301 1.1 christos isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1302 1.1 christos abfd, r_symndx);
1303 1.1 christos if (isym == NULL)
1304 1.1 christos return FALSE;
1305 1.1 christos
1306 1.1 christos s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1307 1.1 christos if (s == NULL)
1308 1.1 christos s = sec;
1309 1.1 christos
1310 1.1 christos vpp = &elf_section_data (s)->local_dynrel;
1311 1.1 christos head = (struct elf_dyn_relocs **) vpp;
1312 1.1 christos }
1313 1.1 christos
1314 1.1 christos p = *head;
1315 1.1 christos if (p == NULL || p->sec != sec)
1316 1.1 christos {
1317 1.1 christos bfd_size_type amt = sizeof *p;
1318 1.1 christos p = ((struct elf_dyn_relocs *)
1319 1.1 christos bfd_alloc (htab->elf.dynobj, amt));
1320 1.1 christos if (p == NULL)
1321 1.1 christos return FALSE;
1322 1.1 christos p->next = *head;
1323 1.1 christos *head = p;
1324 1.1 christos p->sec = sec;
1325 1.1 christos p->count = 0;
1326 1.1 christos p->pc_count = 0;
1327 1.1 christos }
1328 1.1 christos
1329 1.1 christos p->count += 1;
1330 1.1 christos if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
1331 1.1 christos || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL
1332 1.1 christos || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1333 1.1 christos || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1334 1.1 christos || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1335 1.1 christos || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1336 1.1 christos || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1337 1.1 christos p->pc_count += 1;
1338 1.1 christos }
1339 1.1 christos break;
1340 1.1 christos
1341 1.1 christos /* This relocation describes the C++ object vtable hierarchy.
1342 1.1 christos Reconstruct it for later use during GC. */
1343 1.1 christos case R_390_GNU_VTINHERIT:
1344 1.1 christos if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1345 1.1 christos return FALSE;
1346 1.1 christos break;
1347 1.1 christos
1348 1.1 christos /* This relocation describes which C++ vtable entries are actually
1349 1.1 christos used. Record for later use during GC. */
1350 1.1 christos case R_390_GNU_VTENTRY:
1351 1.1 christos BFD_ASSERT (h != NULL);
1352 1.1 christos if (h != NULL
1353 1.1 christos && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1354 1.1 christos return FALSE;
1355 1.1 christos break;
1356 1.1 christos
1357 1.1 christos default:
1358 1.1 christos break;
1359 1.1 christos }
1360 1.1 christos }
1361 1.1 christos
1362 1.1 christos return TRUE;
1363 1.1 christos }
1364 1.1 christos
1365 1.1 christos /* Return the section that should be marked against GC for a given
1366 1.1 christos relocation. */
1367 1.1 christos
1368 1.1 christos static asection *
1369 1.1 christos elf_s390_gc_mark_hook (asection *sec,
1370 1.1 christos struct bfd_link_info *info,
1371 1.1 christos Elf_Internal_Rela *rel,
1372 1.1 christos struct elf_link_hash_entry *h,
1373 1.1 christos Elf_Internal_Sym *sym)
1374 1.1 christos {
1375 1.1 christos if (h != NULL)
1376 1.1 christos switch (ELF64_R_TYPE (rel->r_info))
1377 1.1 christos {
1378 1.1 christos case R_390_GNU_VTINHERIT:
1379 1.1 christos case R_390_GNU_VTENTRY:
1380 1.1 christos return NULL;
1381 1.1 christos }
1382 1.1 christos
1383 1.1 christos return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1384 1.1 christos }
1385 1.1 christos
1386 1.1 christos /* Update the got entry reference counts for the section being removed. */
1387 1.1 christos
1388 1.1 christos static bfd_boolean
1389 1.1 christos elf_s390_gc_sweep_hook (bfd *abfd,
1390 1.1 christos struct bfd_link_info *info,
1391 1.1 christos asection *sec,
1392 1.1 christos const Elf_Internal_Rela *relocs)
1393 1.1 christos {
1394 1.1 christos struct elf_s390_link_hash_table *htab;
1395 1.1 christos Elf_Internal_Shdr *symtab_hdr;
1396 1.1 christos struct elf_link_hash_entry **sym_hashes;
1397 1.1 christos bfd_signed_vma *local_got_refcounts;
1398 1.1 christos const Elf_Internal_Rela *rel, *relend;
1399 1.1 christos
1400 1.6 christos if (bfd_link_relocatable (info))
1401 1.1 christos return TRUE;
1402 1.1 christos
1403 1.1 christos htab = elf_s390_hash_table (info);
1404 1.1 christos if (htab == NULL)
1405 1.1 christos return FALSE;
1406 1.1 christos
1407 1.1 christos elf_section_data (sec)->local_dynrel = NULL;
1408 1.1 christos
1409 1.1 christos symtab_hdr = &elf_symtab_hdr (abfd);
1410 1.1 christos sym_hashes = elf_sym_hashes (abfd);
1411 1.1 christos local_got_refcounts = elf_local_got_refcounts (abfd);
1412 1.1 christos
1413 1.1 christos relend = relocs + sec->reloc_count;
1414 1.1 christos for (rel = relocs; rel < relend; rel++)
1415 1.1 christos {
1416 1.1 christos unsigned long r_symndx;
1417 1.1 christos unsigned int r_type;
1418 1.1 christos struct elf_link_hash_entry *h = NULL;
1419 1.1 christos
1420 1.1 christos r_symndx = ELF64_R_SYM (rel->r_info);
1421 1.1 christos if (r_symndx >= symtab_hdr->sh_info)
1422 1.1 christos {
1423 1.1 christos struct elf_s390_link_hash_entry *eh;
1424 1.1 christos struct elf_dyn_relocs **pp;
1425 1.1 christos struct elf_dyn_relocs *p;
1426 1.1 christos
1427 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1428 1.1 christos while (h->root.type == bfd_link_hash_indirect
1429 1.1 christos || h->root.type == bfd_link_hash_warning)
1430 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
1431 1.1 christos eh = (struct elf_s390_link_hash_entry *) h;
1432 1.1 christos
1433 1.1 christos for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1434 1.1 christos if (p->sec == sec)
1435 1.1 christos {
1436 1.1 christos /* Everything must go for SEC. */
1437 1.1 christos *pp = p->next;
1438 1.1 christos break;
1439 1.1 christos }
1440 1.1 christos }
1441 1.1 christos else
1442 1.1 christos {
1443 1.1 christos Elf_Internal_Sym *isym;
1444 1.1 christos
1445 1.1 christos /* A local symbol. */
1446 1.1 christos isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1447 1.1 christos abfd, r_symndx);
1448 1.1 christos if (isym == NULL)
1449 1.1 christos return FALSE;
1450 1.1 christos
1451 1.1 christos if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1452 1.1 christos {
1453 1.1 christos struct plt_entry *plt = elf_s390_local_plt (abfd);
1454 1.1 christos if (plt[r_symndx].plt.refcount > 0)
1455 1.1 christos plt[r_symndx].plt.refcount--;
1456 1.1 christos }
1457 1.1 christos }
1458 1.1 christos
1459 1.1 christos r_type = ELF64_R_TYPE (rel->r_info);
1460 1.1 christos r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1461 1.1 christos switch (r_type)
1462 1.1 christos {
1463 1.1 christos case R_390_TLS_LDM64:
1464 1.1 christos if (htab->tls_ldm_got.refcount > 0)
1465 1.1 christos htab->tls_ldm_got.refcount -= 1;
1466 1.1 christos break;
1467 1.6 christos case R_390_GOTOFF16:
1468 1.6 christos case R_390_GOTOFF32:
1469 1.6 christos case R_390_GOTOFF64:
1470 1.6 christos if (h != NULL && s390_is_ifunc_symbol_p (h) && h->def_regular)
1471 1.6 christos {
1472 1.6 christos h->plt.refcount--;
1473 1.6 christos break;
1474 1.6 christos }
1475 1.6 christos
1476 1.6 christos case R_390_GOTPC:
1477 1.6 christos case R_390_GOTPCDBL:
1478 1.6 christos break;
1479 1.1 christos
1480 1.1 christos case R_390_TLS_GD64:
1481 1.1 christos case R_390_TLS_IE64:
1482 1.1 christos case R_390_TLS_GOTIE12:
1483 1.1 christos case R_390_TLS_GOTIE20:
1484 1.1 christos case R_390_TLS_GOTIE64:
1485 1.1 christos case R_390_TLS_IEENT:
1486 1.1 christos case R_390_GOT12:
1487 1.1 christos case R_390_GOT16:
1488 1.1 christos case R_390_GOT20:
1489 1.1 christos case R_390_GOT32:
1490 1.1 christos case R_390_GOT64:
1491 1.1 christos case R_390_GOTENT:
1492 1.1 christos if (h != NULL)
1493 1.1 christos {
1494 1.1 christos if (h->got.refcount > 0)
1495 1.1 christos h->got.refcount -= 1;
1496 1.1 christos }
1497 1.1 christos else if (local_got_refcounts != NULL)
1498 1.1 christos {
1499 1.1 christos if (local_got_refcounts[r_symndx] > 0)
1500 1.1 christos local_got_refcounts[r_symndx] -= 1;
1501 1.1 christos }
1502 1.1 christos break;
1503 1.1 christos
1504 1.1 christos case R_390_8:
1505 1.1 christos case R_390_12:
1506 1.1 christos case R_390_16:
1507 1.1 christos case R_390_20:
1508 1.1 christos case R_390_32:
1509 1.1 christos case R_390_64:
1510 1.1 christos case R_390_PC16:
1511 1.1 christos case R_390_PC12DBL:
1512 1.1 christos case R_390_PC16DBL:
1513 1.1 christos case R_390_PC24DBL:
1514 1.1 christos case R_390_PC32:
1515 1.1 christos case R_390_PC32DBL:
1516 1.1 christos case R_390_PC64:
1517 1.6 christos if (bfd_link_pic (info))
1518 1.1 christos break;
1519 1.1 christos /* Fall through */
1520 1.1 christos
1521 1.1 christos case R_390_PLT12DBL:
1522 1.1 christos case R_390_PLT16DBL:
1523 1.1 christos case R_390_PLT24DBL:
1524 1.1 christos case R_390_PLT32:
1525 1.1 christos case R_390_PLT32DBL:
1526 1.1 christos case R_390_PLT64:
1527 1.1 christos case R_390_PLTOFF16:
1528 1.1 christos case R_390_PLTOFF32:
1529 1.1 christos case R_390_PLTOFF64:
1530 1.1 christos if (h != NULL)
1531 1.1 christos {
1532 1.1 christos if (h->plt.refcount > 0)
1533 1.1 christos h->plt.refcount -= 1;
1534 1.1 christos }
1535 1.1 christos break;
1536 1.1 christos
1537 1.1 christos case R_390_GOTPLT12:
1538 1.1 christos case R_390_GOTPLT16:
1539 1.1 christos case R_390_GOTPLT20:
1540 1.1 christos case R_390_GOTPLT32:
1541 1.1 christos case R_390_GOTPLT64:
1542 1.1 christos case R_390_GOTPLTENT:
1543 1.1 christos if (h != NULL)
1544 1.1 christos {
1545 1.1 christos if (h->plt.refcount > 0)
1546 1.1 christos {
1547 1.1 christos ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1548 1.1 christos h->plt.refcount -= 1;
1549 1.1 christos }
1550 1.1 christos }
1551 1.1 christos else if (local_got_refcounts != NULL)
1552 1.1 christos {
1553 1.1 christos if (local_got_refcounts[r_symndx] > 0)
1554 1.1 christos local_got_refcounts[r_symndx] -= 1;
1555 1.1 christos }
1556 1.1 christos break;
1557 1.1 christos
1558 1.1 christos default:
1559 1.1 christos break;
1560 1.1 christos }
1561 1.1 christos }
1562 1.1 christos
1563 1.1 christos return TRUE;
1564 1.1 christos }
1565 1.1 christos
1566 1.1 christos /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1567 1.1 christos entry but we found we will not create any. Called when we find we will
1568 1.1 christos not have any PLT for this symbol, by for example
1569 1.1 christos elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1570 1.1 christos or elf_s390_size_dynamic_sections if no dynamic sections will be
1571 1.1 christos created (we're only linking static objects). */
1572 1.1 christos
1573 1.1 christos static void
1574 1.1 christos elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
1575 1.1 christos {
1576 1.1 christos if (h->elf.root.type == bfd_link_hash_warning)
1577 1.1 christos h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1578 1.1 christos
1579 1.1 christos if (h->gotplt_refcount <= 0)
1580 1.1 christos return;
1581 1.1 christos
1582 1.1 christos /* We simply add the number of gotplt references to the number
1583 1.1 christos * of got references for this symbol. */
1584 1.1 christos h->elf.got.refcount += h->gotplt_refcount;
1585 1.1 christos h->gotplt_refcount = -1;
1586 1.1 christos }
1587 1.1 christos
1588 1.1 christos /* Adjust a symbol defined by a dynamic object and referenced by a
1589 1.1 christos regular object. The current definition is in some section of the
1590 1.1 christos dynamic object, but we're not including those sections. We have to
1591 1.1 christos change the definition to something the rest of the link can
1592 1.1 christos understand. */
1593 1.1 christos
1594 1.1 christos static bfd_boolean
1595 1.1 christos elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
1596 1.1 christos struct elf_link_hash_entry *h)
1597 1.1 christos {
1598 1.1 christos struct elf_s390_link_hash_table *htab;
1599 1.1 christos asection *s;
1600 1.1 christos
1601 1.1 christos /* STT_GNU_IFUNC symbol must go through PLT. */
1602 1.1 christos if (s390_is_ifunc_symbol_p (h))
1603 1.6 christos {
1604 1.6 christos /* All local STT_GNU_IFUNC references must be treated as local
1605 1.6 christos calls via local PLT. */
1606 1.6 christos if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
1607 1.6 christos {
1608 1.6 christos bfd_size_type pc_count = 0, count = 0;
1609 1.6 christos struct elf_dyn_relocs **pp;
1610 1.6 christos struct elf_s390_link_hash_entry *eh;
1611 1.6 christos struct elf_dyn_relocs *p;
1612 1.6 christos
1613 1.6 christos eh = (struct elf_s390_link_hash_entry *) h;
1614 1.6 christos for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1615 1.6 christos {
1616 1.6 christos pc_count += p->pc_count;
1617 1.6 christos p->count -= p->pc_count;
1618 1.6 christos p->pc_count = 0;
1619 1.6 christos count += p->count;
1620 1.6 christos if (p->count == 0)
1621 1.6 christos *pp = p->next;
1622 1.6 christos else
1623 1.6 christos pp = &p->next;
1624 1.6 christos }
1625 1.6 christos
1626 1.6 christos if (pc_count || count)
1627 1.6 christos {
1628 1.6 christos h->needs_plt = 1;
1629 1.6 christos h->non_got_ref = 1;
1630 1.6 christos if (h->plt.refcount <= 0)
1631 1.6 christos h->plt.refcount = 1;
1632 1.6 christos else
1633 1.6 christos h->plt.refcount += 1;
1634 1.6 christos }
1635 1.6 christos }
1636 1.6 christos
1637 1.6 christos if (h->plt.refcount <= 0)
1638 1.6 christos {
1639 1.6 christos h->plt.offset = (bfd_vma) -1;
1640 1.6 christos h->needs_plt = 0;
1641 1.6 christos }
1642 1.6 christos return TRUE;
1643 1.6 christos }
1644 1.1 christos
1645 1.1 christos /* If this is a function, put it in the procedure linkage table. We
1646 1.1 christos will fill in the contents of the procedure linkage table later
1647 1.1 christos (although we could actually do it here). */
1648 1.1 christos if (h->type == STT_FUNC
1649 1.1 christos || h->needs_plt)
1650 1.1 christos {
1651 1.1 christos if (h->plt.refcount <= 0
1652 1.1 christos || SYMBOL_CALLS_LOCAL (info, h)
1653 1.1 christos || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1654 1.1 christos && h->root.type == bfd_link_hash_undefweak))
1655 1.1 christos {
1656 1.1 christos /* This case can occur if we saw a PLT32 reloc in an input
1657 1.1 christos file, but the symbol was never referred to by a dynamic
1658 1.1 christos object, or if all references were garbage collected. In
1659 1.1 christos such a case, we don't actually need to build a procedure
1660 1.1 christos linkage table, and we can just do a PC32 reloc instead. */
1661 1.1 christos h->plt.offset = (bfd_vma) -1;
1662 1.1 christos h->needs_plt = 0;
1663 1.1 christos elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1664 1.1 christos }
1665 1.1 christos
1666 1.1 christos return TRUE;
1667 1.1 christos }
1668 1.1 christos else
1669 1.1 christos /* It's possible that we incorrectly decided a .plt reloc was
1670 1.1 christos needed for an R_390_PC32 reloc to a non-function sym in
1671 1.1 christos check_relocs. We can't decide accurately between function and
1672 1.1 christos non-function syms in check-relocs; Objects loaded later in
1673 1.1 christos the link may change h->type. So fix it now. */
1674 1.1 christos h->plt.offset = (bfd_vma) -1;
1675 1.1 christos
1676 1.1 christos /* If this is a weak symbol, and there is a real definition, the
1677 1.1 christos processor independent code will have arranged for us to see the
1678 1.1 christos real definition first, and we can just use the same value. */
1679 1.1 christos if (h->u.weakdef != NULL)
1680 1.1 christos {
1681 1.1 christos BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1682 1.1 christos || h->u.weakdef->root.type == bfd_link_hash_defweak);
1683 1.1 christos h->root.u.def.section = h->u.weakdef->root.u.def.section;
1684 1.1 christos h->root.u.def.value = h->u.weakdef->root.u.def.value;
1685 1.1 christos if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1686 1.1 christos h->non_got_ref = h->u.weakdef->non_got_ref;
1687 1.1 christos return TRUE;
1688 1.1 christos }
1689 1.1 christos
1690 1.1 christos /* This is a reference to a symbol defined by a dynamic object which
1691 1.1 christos is not a function. */
1692 1.1 christos
1693 1.1 christos /* If we are creating a shared library, we must presume that the
1694 1.1 christos only references to the symbol are via the global offset table.
1695 1.1 christos For such cases we need not do anything here; the relocations will
1696 1.1 christos be handled correctly by relocate_section. */
1697 1.6 christos if (bfd_link_pic (info))
1698 1.1 christos return TRUE;
1699 1.1 christos
1700 1.1 christos /* If there are no references to this symbol that do not use the
1701 1.1 christos GOT, we don't need to generate a copy reloc. */
1702 1.1 christos if (!h->non_got_ref)
1703 1.1 christos return TRUE;
1704 1.1 christos
1705 1.1 christos /* If -z nocopyreloc was given, we won't generate them either. */
1706 1.1 christos if (info->nocopyreloc)
1707 1.1 christos {
1708 1.1 christos h->non_got_ref = 0;
1709 1.1 christos return TRUE;
1710 1.1 christos }
1711 1.1 christos
1712 1.1 christos if (ELIMINATE_COPY_RELOCS)
1713 1.1 christos {
1714 1.1 christos struct elf_s390_link_hash_entry * eh;
1715 1.1 christos struct elf_dyn_relocs *p;
1716 1.1 christos
1717 1.1 christos eh = (struct elf_s390_link_hash_entry *) h;
1718 1.1 christos for (p = eh->dyn_relocs; p != NULL; p = p->next)
1719 1.1 christos {
1720 1.1 christos s = p->sec->output_section;
1721 1.1 christos if (s != NULL && (s->flags & SEC_READONLY) != 0)
1722 1.1 christos break;
1723 1.1 christos }
1724 1.1 christos
1725 1.1 christos /* If we didn't find any dynamic relocs in read-only sections, then
1726 1.1 christos we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1727 1.1 christos if (p == NULL)
1728 1.1 christos {
1729 1.1 christos h->non_got_ref = 0;
1730 1.1 christos return TRUE;
1731 1.1 christos }
1732 1.1 christos }
1733 1.1 christos
1734 1.1 christos /* We must allocate the symbol in our .dynbss section, which will
1735 1.1 christos become part of the .bss section of the executable. There will be
1736 1.1 christos an entry for this symbol in the .dynsym section. The dynamic
1737 1.1 christos object will contain position independent code, so all references
1738 1.1 christos from the dynamic object to this symbol will go through the global
1739 1.1 christos offset table. The dynamic linker will use the .dynsym entry to
1740 1.1 christos determine the address it must put in the global offset table, so
1741 1.1 christos both the dynamic object and the regular object will refer to the
1742 1.1 christos same memory location for the variable. */
1743 1.1 christos
1744 1.1 christos htab = elf_s390_hash_table (info);
1745 1.1 christos if (htab == NULL)
1746 1.1 christos return FALSE;
1747 1.1 christos
1748 1.1 christos /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1749 1.1 christos copy the initial value out of the dynamic object and into the
1750 1.1 christos runtime process image. */
1751 1.1 christos if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
1752 1.1 christos {
1753 1.1 christos htab->srelbss->size += sizeof (Elf64_External_Rela);
1754 1.1 christos h->needs_copy = 1;
1755 1.1 christos }
1756 1.1 christos
1757 1.1 christos s = htab->sdynbss;
1758 1.1 christos
1759 1.3 christos return _bfd_elf_adjust_dynamic_copy (info, h, s);
1760 1.1 christos }
1761 1.1 christos
1762 1.1 christos /* Allocate space in .plt, .got and associated reloc sections for
1763 1.1 christos dynamic relocs. */
1764 1.1 christos
1765 1.1 christos static bfd_boolean
1766 1.1 christos allocate_dynrelocs (struct elf_link_hash_entry *h,
1767 1.1 christos void * inf)
1768 1.1 christos {
1769 1.1 christos struct bfd_link_info *info;
1770 1.1 christos struct elf_s390_link_hash_table *htab;
1771 1.1 christos struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
1772 1.1 christos struct elf_dyn_relocs *p;
1773 1.1 christos
1774 1.1 christos if (h->root.type == bfd_link_hash_indirect)
1775 1.1 christos return TRUE;
1776 1.1 christos
1777 1.1 christos info = (struct bfd_link_info *) inf;
1778 1.1 christos htab = elf_s390_hash_table (info);
1779 1.1 christos if (htab == NULL)
1780 1.1 christos return FALSE;
1781 1.1 christos
1782 1.1 christos /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
1783 1.1 christos here if it is defined and referenced in a non-shared object. */
1784 1.1 christos if (s390_is_ifunc_symbol_p (h) && h->def_regular)
1785 1.6 christos return s390_elf_allocate_ifunc_dyn_relocs (info, h);
1786 1.1 christos else if (htab->elf.dynamic_sections_created
1787 1.1 christos && h->plt.refcount > 0)
1788 1.1 christos {
1789 1.1 christos /* Make sure this symbol is output as a dynamic symbol.
1790 1.1 christos Undefined weak syms won't yet be marked as dynamic. */
1791 1.1 christos if (h->dynindx == -1
1792 1.1 christos && !h->forced_local)
1793 1.1 christos {
1794 1.1 christos if (! bfd_elf_link_record_dynamic_symbol (info, h))
1795 1.1 christos return FALSE;
1796 1.1 christos }
1797 1.1 christos
1798 1.6 christos if (bfd_link_pic (info)
1799 1.1 christos || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1800 1.1 christos {
1801 1.1 christos asection *s = htab->elf.splt;
1802 1.1 christos
1803 1.1 christos /* If this is the first .plt entry, make room for the special
1804 1.1 christos first entry. */
1805 1.1 christos if (s->size == 0)
1806 1.1 christos s->size += PLT_FIRST_ENTRY_SIZE;
1807 1.1 christos
1808 1.1 christos h->plt.offset = s->size;
1809 1.1 christos
1810 1.1 christos /* If this symbol is not defined in a regular file, and we are
1811 1.1 christos not generating a shared library, then set the symbol to this
1812 1.1 christos location in the .plt. This is required to make function
1813 1.1 christos pointers compare as equal between the normal executable and
1814 1.1 christos the shared library. */
1815 1.6 christos if (! bfd_link_pic (info)
1816 1.1 christos && !h->def_regular)
1817 1.1 christos {
1818 1.1 christos h->root.u.def.section = s;
1819 1.1 christos h->root.u.def.value = h->plt.offset;
1820 1.1 christos }
1821 1.1 christos
1822 1.1 christos /* Make room for this entry. */
1823 1.1 christos s->size += PLT_ENTRY_SIZE;
1824 1.1 christos
1825 1.1 christos /* We also need to make an entry in the .got.plt section, which
1826 1.1 christos will be placed in the .got section by the linker script. */
1827 1.1 christos htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
1828 1.1 christos
1829 1.1 christos /* We also need to make an entry in the .rela.plt section. */
1830 1.1 christos htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
1831 1.1 christos }
1832 1.1 christos else
1833 1.1 christos {
1834 1.1 christos h->plt.offset = (bfd_vma) -1;
1835 1.1 christos h->needs_plt = 0;
1836 1.1 christos elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1837 1.1 christos }
1838 1.1 christos }
1839 1.1 christos else
1840 1.1 christos {
1841 1.1 christos h->plt.offset = (bfd_vma) -1;
1842 1.1 christos h->needs_plt = 0;
1843 1.1 christos elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1844 1.1 christos }
1845 1.1 christos
1846 1.1 christos /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1847 1.1 christos the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1848 1.1 christos to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1849 1.1 christos we can save the dynamic TLS relocation. */
1850 1.1 christos if (h->got.refcount > 0
1851 1.6 christos && !bfd_link_pic (info)
1852 1.1 christos && h->dynindx == -1
1853 1.1 christos && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1854 1.1 christos {
1855 1.1 christos if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1856 1.1 christos /* For the GOTIE access without a literal pool entry the offset has
1857 1.1 christos to be stored somewhere. The immediate value in the instruction
1858 1.1 christos is not bit enough so the value is stored in the got. */
1859 1.1 christos {
1860 1.1 christos h->got.offset = htab->elf.sgot->size;
1861 1.1 christos htab->elf.sgot->size += GOT_ENTRY_SIZE;
1862 1.1 christos }
1863 1.1 christos else
1864 1.1 christos h->got.offset = (bfd_vma) -1;
1865 1.1 christos }
1866 1.1 christos else if (h->got.refcount > 0)
1867 1.1 christos {
1868 1.1 christos asection *s;
1869 1.1 christos bfd_boolean dyn;
1870 1.1 christos int tls_type = elf_s390_hash_entry(h)->tls_type;
1871 1.1 christos
1872 1.1 christos /* Make sure this symbol is output as a dynamic symbol.
1873 1.1 christos Undefined weak syms won't yet be marked as dynamic. */
1874 1.1 christos if (h->dynindx == -1
1875 1.1 christos && !h->forced_local)
1876 1.1 christos {
1877 1.1 christos if (! bfd_elf_link_record_dynamic_symbol (info, h))
1878 1.1 christos return FALSE;
1879 1.1 christos }
1880 1.1 christos
1881 1.1 christos s = htab->elf.sgot;
1882 1.1 christos h->got.offset = s->size;
1883 1.1 christos s->size += GOT_ENTRY_SIZE;
1884 1.1 christos /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
1885 1.1 christos if (tls_type == GOT_TLS_GD)
1886 1.1 christos s->size += GOT_ENTRY_SIZE;
1887 1.1 christos dyn = htab->elf.dynamic_sections_created;
1888 1.1 christos /* R_390_TLS_IE64 needs one dynamic relocation,
1889 1.1 christos R_390_TLS_GD64 needs one if local symbol and two if global. */
1890 1.1 christos if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1891 1.1 christos || tls_type >= GOT_TLS_IE)
1892 1.1 christos htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
1893 1.1 christos else if (tls_type == GOT_TLS_GD)
1894 1.1 christos htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
1895 1.1 christos else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1896 1.1 christos || h->root.type != bfd_link_hash_undefweak)
1897 1.6 christos && (bfd_link_pic (info)
1898 1.1 christos || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1899 1.1 christos htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
1900 1.1 christos }
1901 1.1 christos else
1902 1.1 christos h->got.offset = (bfd_vma) -1;
1903 1.1 christos
1904 1.1 christos if (eh->dyn_relocs == NULL)
1905 1.1 christos return TRUE;
1906 1.1 christos
1907 1.1 christos /* In the shared -Bsymbolic case, discard space allocated for
1908 1.1 christos dynamic pc-relative relocs against symbols which turn out to be
1909 1.1 christos defined in regular objects. For the normal shared case, discard
1910 1.1 christos space for pc-relative relocs that have become local due to symbol
1911 1.1 christos visibility changes. */
1912 1.1 christos
1913 1.6 christos if (bfd_link_pic (info))
1914 1.1 christos {
1915 1.1 christos if (SYMBOL_CALLS_LOCAL (info, h))
1916 1.1 christos {
1917 1.1 christos struct elf_dyn_relocs **pp;
1918 1.1 christos
1919 1.1 christos for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1920 1.1 christos {
1921 1.1 christos p->count -= p->pc_count;
1922 1.1 christos p->pc_count = 0;
1923 1.1 christos if (p->count == 0)
1924 1.1 christos *pp = p->next;
1925 1.1 christos else
1926 1.1 christos pp = &p->next;
1927 1.1 christos }
1928 1.1 christos }
1929 1.1 christos
1930 1.1 christos /* Also discard relocs on undefined weak syms with non-default
1931 1.1 christos visibility. */
1932 1.1 christos if (eh->dyn_relocs != NULL
1933 1.1 christos && h->root.type == bfd_link_hash_undefweak)
1934 1.1 christos {
1935 1.1 christos if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1936 1.1 christos eh->dyn_relocs = NULL;
1937 1.1 christos
1938 1.1 christos /* Make sure undefined weak symbols are output as a dynamic
1939 1.1 christos symbol in PIEs. */
1940 1.1 christos else if (h->dynindx == -1
1941 1.1 christos && !h->forced_local)
1942 1.1 christos {
1943 1.1 christos if (! bfd_elf_link_record_dynamic_symbol (info, h))
1944 1.1 christos return FALSE;
1945 1.1 christos }
1946 1.1 christos }
1947 1.1 christos }
1948 1.1 christos else if (ELIMINATE_COPY_RELOCS)
1949 1.1 christos {
1950 1.1 christos /* For the non-shared case, discard space for relocs against
1951 1.1 christos symbols which turn out to need copy relocs or are not
1952 1.1 christos dynamic. */
1953 1.1 christos
1954 1.1 christos if (!h->non_got_ref
1955 1.1 christos && ((h->def_dynamic
1956 1.1 christos && !h->def_regular)
1957 1.1 christos || (htab->elf.dynamic_sections_created
1958 1.1 christos && (h->root.type == bfd_link_hash_undefweak
1959 1.1 christos || h->root.type == bfd_link_hash_undefined))))
1960 1.1 christos {
1961 1.1 christos /* Make sure this symbol is output as a dynamic symbol.
1962 1.1 christos Undefined weak syms won't yet be marked as dynamic. */
1963 1.1 christos if (h->dynindx == -1
1964 1.1 christos && !h->forced_local)
1965 1.1 christos {
1966 1.1 christos if (! bfd_elf_link_record_dynamic_symbol (info, h))
1967 1.1 christos return FALSE;
1968 1.1 christos }
1969 1.1 christos
1970 1.1 christos /* If that succeeded, we know we'll be keeping all the
1971 1.1 christos relocs. */
1972 1.1 christos if (h->dynindx != -1)
1973 1.1 christos goto keep;
1974 1.1 christos }
1975 1.1 christos
1976 1.1 christos eh->dyn_relocs = NULL;
1977 1.1 christos
1978 1.1 christos keep: ;
1979 1.1 christos }
1980 1.1 christos
1981 1.1 christos /* Finally, allocate space. */
1982 1.1 christos for (p = eh->dyn_relocs; p != NULL; p = p->next)
1983 1.1 christos {
1984 1.1 christos asection *sreloc = elf_section_data (p->sec)->sreloc;
1985 1.1 christos sreloc->size += p->count * sizeof (Elf64_External_Rela);
1986 1.1 christos }
1987 1.1 christos
1988 1.1 christos return TRUE;
1989 1.1 christos }
1990 1.1 christos
1991 1.1 christos /* Find any dynamic relocs that apply to read-only sections. */
1992 1.1 christos
1993 1.1 christos static bfd_boolean
1994 1.1 christos readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1995 1.1 christos {
1996 1.1 christos struct elf_s390_link_hash_entry *eh;
1997 1.1 christos struct elf_dyn_relocs *p;
1998 1.1 christos
1999 1.1 christos eh = (struct elf_s390_link_hash_entry *) h;
2000 1.1 christos for (p = eh->dyn_relocs; p != NULL; p = p->next)
2001 1.1 christos {
2002 1.1 christos asection *s = p->sec->output_section;
2003 1.1 christos
2004 1.1 christos if (s != NULL && (s->flags & SEC_READONLY) != 0)
2005 1.1 christos {
2006 1.1 christos struct bfd_link_info *info = (struct bfd_link_info *) inf;
2007 1.1 christos
2008 1.1 christos info->flags |= DF_TEXTREL;
2009 1.1 christos
2010 1.1 christos /* Not an error, just cut short the traversal. */
2011 1.1 christos return FALSE;
2012 1.1 christos }
2013 1.1 christos }
2014 1.1 christos return TRUE;
2015 1.1 christos }
2016 1.1 christos
2017 1.1 christos /* Set the sizes of the dynamic sections. */
2018 1.1 christos
2019 1.1 christos static bfd_boolean
2020 1.1 christos elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2021 1.1 christos struct bfd_link_info *info)
2022 1.1 christos {
2023 1.1 christos struct elf_s390_link_hash_table *htab;
2024 1.1 christos bfd *dynobj;
2025 1.1 christos asection *s;
2026 1.1 christos bfd_boolean relocs;
2027 1.1 christos bfd *ibfd;
2028 1.1 christos
2029 1.1 christos htab = elf_s390_hash_table (info);
2030 1.1 christos if (htab == NULL)
2031 1.1 christos return FALSE;
2032 1.1 christos
2033 1.1 christos dynobj = htab->elf.dynobj;
2034 1.1 christos if (dynobj == NULL)
2035 1.1 christos abort ();
2036 1.1 christos
2037 1.1 christos if (htab->elf.dynamic_sections_created)
2038 1.1 christos {
2039 1.1 christos /* Set the contents of the .interp section to the interpreter. */
2040 1.6 christos if (bfd_link_executable (info) && !info->nointerp)
2041 1.1 christos {
2042 1.1 christos s = bfd_get_linker_section (dynobj, ".interp");
2043 1.1 christos if (s == NULL)
2044 1.1 christos abort ();
2045 1.1 christos s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2046 1.1 christos s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2047 1.1 christos }
2048 1.1 christos }
2049 1.1 christos
2050 1.1 christos /* Set up .got offsets for local syms, and space for local dynamic
2051 1.1 christos relocs. */
2052 1.3 christos for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2053 1.1 christos {
2054 1.1 christos bfd_signed_vma *local_got;
2055 1.1 christos bfd_signed_vma *end_local_got;
2056 1.1 christos char *local_tls_type;
2057 1.1 christos bfd_size_type locsymcount;
2058 1.1 christos Elf_Internal_Shdr *symtab_hdr;
2059 1.1 christos asection *srela;
2060 1.1 christos struct plt_entry *local_plt;
2061 1.1 christos unsigned int i;
2062 1.1 christos
2063 1.1 christos if (! is_s390_elf (ibfd))
2064 1.1 christos continue;
2065 1.1 christos
2066 1.1 christos for (s = ibfd->sections; s != NULL; s = s->next)
2067 1.1 christos {
2068 1.1 christos struct elf_dyn_relocs *p;
2069 1.1 christos
2070 1.1 christos for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2071 1.1 christos {
2072 1.1 christos if (!bfd_is_abs_section (p->sec)
2073 1.1 christos && bfd_is_abs_section (p->sec->output_section))
2074 1.1 christos {
2075 1.1 christos /* Input section has been discarded, either because
2076 1.1 christos it is a copy of a linkonce section or due to
2077 1.1 christos linker script /DISCARD/, so we'll be discarding
2078 1.1 christos the relocs too. */
2079 1.1 christos }
2080 1.1 christos else if (p->count != 0)
2081 1.1 christos {
2082 1.1 christos srela = elf_section_data (p->sec)->sreloc;
2083 1.1 christos srela->size += p->count * sizeof (Elf64_External_Rela);
2084 1.1 christos if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2085 1.1 christos info->flags |= DF_TEXTREL;
2086 1.1 christos }
2087 1.1 christos }
2088 1.1 christos }
2089 1.1 christos
2090 1.1 christos local_got = elf_local_got_refcounts (ibfd);
2091 1.1 christos if (!local_got)
2092 1.1 christos continue;
2093 1.1 christos
2094 1.1 christos symtab_hdr = &elf_symtab_hdr (ibfd);
2095 1.1 christos locsymcount = symtab_hdr->sh_info;
2096 1.1 christos end_local_got = local_got + locsymcount;
2097 1.1 christos local_tls_type = elf_s390_local_got_tls_type (ibfd);
2098 1.1 christos s = htab->elf.sgot;
2099 1.1 christos srela = htab->elf.srelgot;
2100 1.1 christos for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2101 1.1 christos {
2102 1.1 christos if (*local_got > 0)
2103 1.1 christos {
2104 1.1 christos *local_got = s->size;
2105 1.1 christos s->size += GOT_ENTRY_SIZE;
2106 1.1 christos if (*local_tls_type == GOT_TLS_GD)
2107 1.1 christos s->size += GOT_ENTRY_SIZE;
2108 1.6 christos if (bfd_link_pic (info))
2109 1.1 christos srela->size += sizeof (Elf64_External_Rela);
2110 1.1 christos }
2111 1.1 christos else
2112 1.1 christos *local_got = (bfd_vma) -1;
2113 1.1 christos }
2114 1.1 christos
2115 1.1 christos local_plt = elf_s390_local_plt (ibfd);
2116 1.1 christos for (i = 0; i < symtab_hdr->sh_info; i++)
2117 1.1 christos {
2118 1.1 christos if (local_plt[i].plt.refcount > 0)
2119 1.1 christos {
2120 1.1 christos local_plt[i].plt.offset = htab->elf.iplt->size;
2121 1.1 christos htab->elf.iplt->size += PLT_ENTRY_SIZE;
2122 1.1 christos htab->elf.igotplt->size += GOT_ENTRY_SIZE;
2123 1.1 christos htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
2124 1.1 christos }
2125 1.1 christos else
2126 1.1 christos local_plt[i].plt.offset = (bfd_vma) -1;
2127 1.1 christos }
2128 1.1 christos }
2129 1.1 christos
2130 1.1 christos if (htab->tls_ldm_got.refcount > 0)
2131 1.1 christos {
2132 1.1 christos /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
2133 1.1 christos relocs. */
2134 1.1 christos htab->tls_ldm_got.offset = htab->elf.sgot->size;
2135 1.1 christos htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
2136 1.1 christos htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
2137 1.1 christos }
2138 1.1 christos else
2139 1.1 christos htab->tls_ldm_got.offset = -1;
2140 1.1 christos
2141 1.1 christos /* Allocate global sym .plt and .got entries, and space for global
2142 1.1 christos sym dynamic relocs. */
2143 1.1 christos elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2144 1.1 christos
2145 1.1 christos /* We now have determined the sizes of the various dynamic sections.
2146 1.1 christos Allocate memory for them. */
2147 1.1 christos relocs = FALSE;
2148 1.1 christos for (s = dynobj->sections; s != NULL; s = s->next)
2149 1.1 christos {
2150 1.1 christos if ((s->flags & SEC_LINKER_CREATED) == 0)
2151 1.1 christos continue;
2152 1.1 christos
2153 1.1 christos if (s == htab->elf.splt
2154 1.1 christos || s == htab->elf.sgot
2155 1.1 christos || s == htab->elf.sgotplt
2156 1.1 christos || s == htab->sdynbss
2157 1.1 christos || s == htab->elf.iplt
2158 1.1 christos || s == htab->elf.igotplt
2159 1.1 christos || s == htab->irelifunc)
2160 1.1 christos {
2161 1.1 christos /* Strip this section if we don't need it; see the
2162 1.1 christos comment below. */
2163 1.1 christos }
2164 1.1 christos else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2165 1.1 christos {
2166 1.1 christos if (s->size != 0 && s != htab->elf.srelplt)
2167 1.1 christos relocs = TRUE;
2168 1.1 christos
2169 1.1 christos /* We use the reloc_count field as a counter if we need
2170 1.1 christos to copy relocs into the output file. */
2171 1.1 christos s->reloc_count = 0;
2172 1.1 christos }
2173 1.1 christos else
2174 1.1 christos {
2175 1.1 christos /* It's not one of our sections, so don't allocate space. */
2176 1.1 christos continue;
2177 1.1 christos }
2178 1.1 christos
2179 1.1 christos if (s->size == 0)
2180 1.1 christos {
2181 1.1 christos /* If we don't need this section, strip it from the
2182 1.1 christos output file. This is to handle .rela.bss and
2183 1.1 christos .rela.plt. We must create it in
2184 1.1 christos create_dynamic_sections, because it must be created
2185 1.1 christos before the linker maps input sections to output
2186 1.1 christos sections. The linker does that before
2187 1.1 christos adjust_dynamic_symbol is called, and it is that
2188 1.1 christos function which decides whether anything needs to go
2189 1.1 christos into these sections. */
2190 1.1 christos
2191 1.1 christos s->flags |= SEC_EXCLUDE;
2192 1.1 christos continue;
2193 1.1 christos }
2194 1.1 christos
2195 1.1 christos if ((s->flags & SEC_HAS_CONTENTS) == 0)
2196 1.1 christos continue;
2197 1.1 christos
2198 1.1 christos /* Allocate memory for the section contents. We use bfd_zalloc
2199 1.1 christos here in case unused entries are not reclaimed before the
2200 1.1 christos section's contents are written out. This should not happen,
2201 1.1 christos but this way if it does, we get a R_390_NONE reloc instead
2202 1.1 christos of garbage. */
2203 1.1 christos s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2204 1.1 christos if (s->contents == NULL)
2205 1.1 christos return FALSE;
2206 1.1 christos }
2207 1.1 christos
2208 1.1 christos if (htab->elf.dynamic_sections_created)
2209 1.1 christos {
2210 1.1 christos /* Add some entries to the .dynamic section. We fill in the
2211 1.1 christos values later, in elf_s390_finish_dynamic_sections, but we
2212 1.1 christos must add the entries now so that we get the correct size for
2213 1.1 christos the .dynamic section. The DT_DEBUG entry is filled in by the
2214 1.1 christos dynamic linker and used by the debugger. */
2215 1.1 christos #define add_dynamic_entry(TAG, VAL) \
2216 1.1 christos _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2217 1.1 christos
2218 1.6 christos if (bfd_link_executable (info))
2219 1.1 christos {
2220 1.1 christos if (!add_dynamic_entry (DT_DEBUG, 0))
2221 1.1 christos return FALSE;
2222 1.1 christos }
2223 1.1 christos
2224 1.1 christos if (htab->elf.splt->size != 0)
2225 1.1 christos {
2226 1.1 christos if (!add_dynamic_entry (DT_PLTGOT, 0)
2227 1.1 christos || !add_dynamic_entry (DT_PLTRELSZ, 0)
2228 1.1 christos || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2229 1.1 christos || !add_dynamic_entry (DT_JMPREL, 0))
2230 1.1 christos return FALSE;
2231 1.1 christos }
2232 1.1 christos
2233 1.1 christos if (relocs)
2234 1.1 christos {
2235 1.1 christos if (!add_dynamic_entry (DT_RELA, 0)
2236 1.1 christos || !add_dynamic_entry (DT_RELASZ, 0)
2237 1.1 christos || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
2238 1.1 christos return FALSE;
2239 1.1 christos
2240 1.1 christos /* If any dynamic relocs apply to a read-only section,
2241 1.1 christos then we need a DT_TEXTREL entry. */
2242 1.1 christos if ((info->flags & DF_TEXTREL) == 0)
2243 1.1 christos elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2244 1.1 christos info);
2245 1.1 christos
2246 1.1 christos if ((info->flags & DF_TEXTREL) != 0)
2247 1.1 christos {
2248 1.1 christos if (!add_dynamic_entry (DT_TEXTREL, 0))
2249 1.1 christos return FALSE;
2250 1.1 christos }
2251 1.1 christos }
2252 1.1 christos }
2253 1.1 christos #undef add_dynamic_entry
2254 1.1 christos
2255 1.1 christos return TRUE;
2256 1.1 christos }
2257 1.1 christos
2258 1.1 christos /* Return the base VMA address which should be subtracted from real addresses
2259 1.1 christos when resolving @dtpoff relocation.
2260 1.1 christos This is PT_TLS segment p_vaddr. */
2261 1.1 christos
2262 1.1 christos static bfd_vma
2263 1.1 christos dtpoff_base (struct bfd_link_info *info)
2264 1.1 christos {
2265 1.1 christos /* If tls_sec is NULL, we should have signalled an error already. */
2266 1.1 christos if (elf_hash_table (info)->tls_sec == NULL)
2267 1.1 christos return 0;
2268 1.1 christos return elf_hash_table (info)->tls_sec->vma;
2269 1.1 christos }
2270 1.1 christos
2271 1.1 christos /* Return the relocation value for @tpoff relocation
2272 1.1 christos if STT_TLS virtual address is ADDRESS. */
2273 1.1 christos
2274 1.1 christos static bfd_vma
2275 1.1 christos tpoff (struct bfd_link_info *info, bfd_vma address)
2276 1.1 christos {
2277 1.1 christos struct elf_link_hash_table *htab = elf_hash_table (info);
2278 1.1 christos
2279 1.1 christos /* If tls_sec is NULL, we should have signalled an error already. */
2280 1.1 christos if (htab->tls_sec == NULL)
2281 1.1 christos return 0;
2282 1.1 christos return htab->tls_size + htab->tls_sec->vma - address;
2283 1.1 christos }
2284 1.1 christos
2285 1.1 christos /* Complain if TLS instruction relocation is against an invalid
2286 1.1 christos instruction. */
2287 1.1 christos
2288 1.1 christos static void
2289 1.1 christos invalid_tls_insn (bfd *input_bfd,
2290 1.1 christos asection *input_section,
2291 1.1 christos Elf_Internal_Rela *rel)
2292 1.1 christos {
2293 1.1 christos reloc_howto_type *howto;
2294 1.1 christos
2295 1.1 christos howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
2296 1.1 christos (*_bfd_error_handler)
2297 1.1 christos (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2298 1.1 christos input_bfd,
2299 1.1 christos input_section,
2300 1.1 christos (long) rel->r_offset,
2301 1.1 christos howto->name);
2302 1.1 christos bfd_set_error (bfd_error_bad_value);
2303 1.1 christos }
2304 1.1 christos
2305 1.1 christos /* Relocate a 390 ELF section. */
2306 1.1 christos
2307 1.1 christos static bfd_boolean
2308 1.1 christos elf_s390_relocate_section (bfd *output_bfd,
2309 1.1 christos struct bfd_link_info *info,
2310 1.1 christos bfd *input_bfd,
2311 1.1 christos asection *input_section,
2312 1.1 christos bfd_byte *contents,
2313 1.1 christos Elf_Internal_Rela *relocs,
2314 1.1 christos Elf_Internal_Sym *local_syms,
2315 1.1 christos asection **local_sections)
2316 1.1 christos {
2317 1.1 christos struct elf_s390_link_hash_table *htab;
2318 1.1 christos Elf_Internal_Shdr *symtab_hdr;
2319 1.1 christos struct elf_link_hash_entry **sym_hashes;
2320 1.1 christos bfd_vma *local_got_offsets;
2321 1.1 christos Elf_Internal_Rela *rel;
2322 1.1 christos Elf_Internal_Rela *relend;
2323 1.1 christos
2324 1.1 christos BFD_ASSERT (is_s390_elf (input_bfd));
2325 1.1 christos
2326 1.1 christos htab = elf_s390_hash_table (info);
2327 1.1 christos if (htab == NULL)
2328 1.1 christos return FALSE;
2329 1.1 christos
2330 1.1 christos symtab_hdr = &elf_symtab_hdr (input_bfd);
2331 1.1 christos sym_hashes = elf_sym_hashes (input_bfd);
2332 1.1 christos local_got_offsets = elf_local_got_offsets (input_bfd);
2333 1.1 christos
2334 1.1 christos rel = relocs;
2335 1.1 christos relend = relocs + input_section->reloc_count;
2336 1.1 christos for (; rel < relend; rel++)
2337 1.1 christos {
2338 1.1 christos unsigned int r_type;
2339 1.1 christos reloc_howto_type *howto;
2340 1.1 christos unsigned long r_symndx;
2341 1.1 christos struct elf_link_hash_entry *h;
2342 1.1 christos Elf_Internal_Sym *sym;
2343 1.1 christos asection *sec;
2344 1.1 christos bfd_vma off;
2345 1.1 christos bfd_vma relocation;
2346 1.1 christos bfd_boolean unresolved_reloc;
2347 1.1 christos bfd_reloc_status_type r;
2348 1.1 christos int tls_type;
2349 1.1 christos asection *base_got = htab->elf.sgot;
2350 1.1 christos
2351 1.1 christos r_type = ELF64_R_TYPE (rel->r_info);
2352 1.1 christos if (r_type == (int) R_390_GNU_VTINHERIT
2353 1.1 christos || r_type == (int) R_390_GNU_VTENTRY)
2354 1.1 christos continue;
2355 1.1 christos if (r_type >= (int) R_390_max)
2356 1.1 christos {
2357 1.1 christos bfd_set_error (bfd_error_bad_value);
2358 1.1 christos return FALSE;
2359 1.1 christos }
2360 1.1 christos
2361 1.1 christos howto = elf_howto_table + r_type;
2362 1.1 christos r_symndx = ELF64_R_SYM (rel->r_info);
2363 1.1 christos
2364 1.1 christos h = NULL;
2365 1.1 christos sym = NULL;
2366 1.1 christos sec = NULL;
2367 1.1 christos unresolved_reloc = FALSE;
2368 1.1 christos if (r_symndx < symtab_hdr->sh_info)
2369 1.1 christos {
2370 1.1 christos sym = local_syms + r_symndx;
2371 1.1 christos sec = local_sections[r_symndx];
2372 1.1 christos
2373 1.1 christos if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2374 1.1 christos {
2375 1.1 christos struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
2376 1.1 christos if (local_plt == NULL)
2377 1.1 christos return FALSE;
2378 1.1 christos
2379 1.1 christos /* Address of the PLT slot. */
2380 1.1 christos relocation = (htab->elf.iplt->output_section->vma
2381 1.1 christos + htab->elf.iplt->output_offset
2382 1.1 christos + local_plt[r_symndx].plt.offset);
2383 1.1 christos
2384 1.1 christos switch (r_type)
2385 1.1 christos {
2386 1.1 christos case R_390_PLTOFF16:
2387 1.1 christos case R_390_PLTOFF32:
2388 1.1 christos case R_390_PLTOFF64:
2389 1.1 christos relocation -= htab->elf.sgot->output_section->vma;
2390 1.1 christos break;
2391 1.1 christos case R_390_GOTPLT12:
2392 1.1 christos case R_390_GOTPLT16:
2393 1.1 christos case R_390_GOTPLT20:
2394 1.1 christos case R_390_GOTPLT32:
2395 1.1 christos case R_390_GOTPLT64:
2396 1.1 christos case R_390_GOTPLTENT:
2397 1.1 christos case R_390_GOT12:
2398 1.1 christos case R_390_GOT16:
2399 1.1 christos case R_390_GOT20:
2400 1.1 christos case R_390_GOT32:
2401 1.1 christos case R_390_GOT64:
2402 1.1 christos case R_390_GOTENT:
2403 1.1 christos {
2404 1.1 christos /* Write the PLT slot address into the GOT slot. */
2405 1.1 christos bfd_put_64 (output_bfd, relocation,
2406 1.1 christos htab->elf.sgot->contents +
2407 1.1 christos local_got_offsets[r_symndx]);
2408 1.1 christos relocation = (local_got_offsets[r_symndx] +
2409 1.1 christos htab->elf.sgot->output_offset);
2410 1.1 christos
2411 1.1 christos if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
2412 1.1 christos relocation += htab->elf.sgot->output_section->vma;
2413 1.1 christos break;
2414 1.1 christos }
2415 1.1 christos default:
2416 1.1 christos break;
2417 1.1 christos }
2418 1.1 christos /* The output section is needed later in
2419 1.1 christos finish_dynamic_section when creating the dynamic
2420 1.1 christos relocation. */
2421 1.1 christos local_plt[r_symndx].sec = sec;
2422 1.1 christos goto do_relocation;
2423 1.1 christos }
2424 1.1 christos else
2425 1.1 christos relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2426 1.1 christos }
2427 1.1 christos else
2428 1.1 christos {
2429 1.1 christos bfd_boolean warned ATTRIBUTE_UNUSED;
2430 1.1 christos bfd_boolean ignored ATTRIBUTE_UNUSED;
2431 1.1 christos
2432 1.1 christos RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2433 1.1 christos r_symndx, symtab_hdr, sym_hashes,
2434 1.1 christos h, sec, relocation,
2435 1.1 christos unresolved_reloc, warned, ignored);
2436 1.1 christos }
2437 1.1 christos
2438 1.1 christos if (sec != NULL && discarded_section (sec))
2439 1.1 christos RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2440 1.1 christos rel, 1, relend, howto, 0, contents);
2441 1.1 christos
2442 1.6 christos if (bfd_link_relocatable (info))
2443 1.1 christos continue;
2444 1.1 christos
2445 1.1 christos switch (r_type)
2446 1.1 christos {
2447 1.1 christos case R_390_GOTPLT12:
2448 1.1 christos case R_390_GOTPLT16:
2449 1.1 christos case R_390_GOTPLT20:
2450 1.1 christos case R_390_GOTPLT32:
2451 1.1 christos case R_390_GOTPLT64:
2452 1.1 christos case R_390_GOTPLTENT:
2453 1.1 christos /* There are three cases for a GOTPLT relocation. 1) The
2454 1.1 christos relocation is against the jump slot entry of a plt that
2455 1.1 christos will get emitted to the output file. 2) The relocation
2456 1.1 christos is against the jump slot of a plt entry that has been
2457 1.1 christos removed. elf_s390_adjust_gotplt has created a GOT entry
2458 1.1 christos as replacement. 3) The relocation is against a local symbol.
2459 1.1 christos Cases 2) and 3) are the same as the GOT relocation code
2460 1.1 christos so we just have to test for case 1 and fall through for
2461 1.1 christos the other two. */
2462 1.1 christos if (h != NULL && h->plt.offset != (bfd_vma) -1)
2463 1.1 christos {
2464 1.1 christos bfd_vma plt_index;
2465 1.1 christos
2466 1.1 christos if (s390_is_ifunc_symbol_p (h))
2467 1.1 christos {
2468 1.1 christos plt_index = h->plt.offset / PLT_ENTRY_SIZE;
2469 1.1 christos relocation = (plt_index * GOT_ENTRY_SIZE +
2470 1.1 christos htab->elf.igotplt->output_offset);
2471 1.1 christos if (r_type == R_390_GOTPLTENT)
2472 1.1 christos relocation += htab->elf.igotplt->output_section->vma;
2473 1.1 christos }
2474 1.1 christos else
2475 1.1 christos {
2476 1.1 christos /* Calc. index no.
2477 1.1 christos Current offset - size first entry / entry size. */
2478 1.1 christos plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2479 1.1 christos PLT_ENTRY_SIZE;
2480 1.1 christos
2481 1.1 christos /* Offset in GOT is PLT index plus GOT headers(3)
2482 1.6 christos times 8, addr & GOT addr. */
2483 1.1 christos relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2484 1.1 christos if (r_type == R_390_GOTPLTENT)
2485 1.1 christos relocation += htab->elf.sgot->output_section->vma;
2486 1.1 christos }
2487 1.1 christos unresolved_reloc = FALSE;
2488 1.1 christos break;
2489 1.1 christos }
2490 1.1 christos /* Fall through. */
2491 1.1 christos
2492 1.1 christos case R_390_GOT12:
2493 1.1 christos case R_390_GOT16:
2494 1.1 christos case R_390_GOT20:
2495 1.1 christos case R_390_GOT32:
2496 1.1 christos case R_390_GOT64:
2497 1.1 christos case R_390_GOTENT:
2498 1.1 christos /* Relocation is to the entry for this symbol in the global
2499 1.1 christos offset table. */
2500 1.1 christos if (base_got == NULL)
2501 1.1 christos abort ();
2502 1.1 christos
2503 1.1 christos if (h != NULL)
2504 1.1 christos {
2505 1.1 christos bfd_boolean dyn;
2506 1.1 christos
2507 1.1 christos off = h->got.offset;
2508 1.1 christos dyn = htab->elf.dynamic_sections_created;
2509 1.1 christos
2510 1.1 christos if (s390_is_ifunc_symbol_p (h))
2511 1.1 christos {
2512 1.1 christos BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
2513 1.1 christos if (off == (bfd_vma)-1)
2514 1.1 christos {
2515 1.1 christos /* No explicit GOT usage so redirect to the
2516 1.1 christos got.iplt slot. */
2517 1.1 christos base_got = htab->elf.igotplt;
2518 1.1 christos off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
2519 1.1 christos }
2520 1.1 christos else
2521 1.1 christos {
2522 1.1 christos /* Explicit GOT slots must contain the address
2523 1.1 christos of the PLT slot. This will be handled in
2524 1.1 christos finish_dynamic_symbol. */
2525 1.1 christos }
2526 1.1 christos }
2527 1.6 christos else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2528 1.6 christos bfd_link_pic (info),
2529 1.6 christos h)
2530 1.6 christos || (bfd_link_pic (info)
2531 1.1 christos && SYMBOL_REFERENCES_LOCAL (info, h))
2532 1.1 christos || (ELF_ST_VISIBILITY (h->other)
2533 1.1 christos && h->root.type == bfd_link_hash_undefweak))
2534 1.1 christos {
2535 1.1 christos /* This is actually a static link, or it is a
2536 1.1 christos -Bsymbolic link and the symbol is defined
2537 1.1 christos locally, or the symbol was forced to be local
2538 1.1 christos because of a version file. We must initialize
2539 1.1 christos this entry in the global offset table. Since the
2540 1.1 christos offset must always be a multiple of 2, we use the
2541 1.1 christos least significant bit to record whether we have
2542 1.1 christos initialized it already.
2543 1.1 christos
2544 1.1 christos When doing a dynamic link, we create a .rel.got
2545 1.1 christos relocation entry to initialize the value. This
2546 1.1 christos is done in the finish_dynamic_symbol routine. */
2547 1.1 christos if ((off & 1) != 0)
2548 1.1 christos off &= ~1;
2549 1.1 christos else
2550 1.1 christos {
2551 1.1 christos bfd_put_64 (output_bfd, relocation,
2552 1.1 christos base_got->contents + off);
2553 1.1 christos h->got.offset |= 1;
2554 1.1 christos }
2555 1.1 christos
2556 1.1 christos if ((h->def_regular
2557 1.6 christos && bfd_link_pic (info)
2558 1.1 christos && SYMBOL_REFERENCES_LOCAL (info, h))
2559 1.1 christos /* lgrl rx,sym@GOTENT -> larl rx, sym */
2560 1.1 christos && ((r_type == R_390_GOTENT
2561 1.1 christos && (bfd_get_16 (input_bfd,
2562 1.1 christos contents + rel->r_offset - 2)
2563 1.1 christos & 0xff0f) == 0xc408)
2564 1.1 christos /* lg rx, sym@GOT(r12) -> larl rx, sym */
2565 1.1 christos || (r_type == R_390_GOT20
2566 1.1 christos && (bfd_get_32 (input_bfd,
2567 1.1 christos contents + rel->r_offset - 2)
2568 1.1 christos & 0xff00f000) == 0xe300c000
2569 1.1 christos && bfd_get_8 (input_bfd,
2570 1.1 christos contents + rel->r_offset + 3) == 0x04)))
2571 1.1 christos
2572 1.1 christos {
2573 1.1 christos unsigned short new_insn =
2574 1.1 christos (0xc000 | (bfd_get_8 (input_bfd,
2575 1.1 christos contents + rel->r_offset - 1) & 0xf0));
2576 1.1 christos bfd_put_16 (output_bfd, new_insn,
2577 1.1 christos contents + rel->r_offset - 2);
2578 1.1 christos r_type = R_390_PC32DBL;
2579 1.1 christos rel->r_addend = 2;
2580 1.1 christos howto = elf_howto_table + r_type;
2581 1.1 christos relocation = h->root.u.def.value
2582 1.1 christos + h->root.u.def.section->output_section->vma
2583 1.1 christos + h->root.u.def.section->output_offset;
2584 1.1 christos goto do_relocation;
2585 1.1 christos }
2586 1.1 christos }
2587 1.1 christos else
2588 1.1 christos unresolved_reloc = FALSE;
2589 1.1 christos }
2590 1.1 christos else
2591 1.1 christos {
2592 1.1 christos if (local_got_offsets == NULL)
2593 1.1 christos abort ();
2594 1.1 christos
2595 1.1 christos off = local_got_offsets[r_symndx];
2596 1.1 christos
2597 1.1 christos /* The offset must always be a multiple of 8. We use
2598 1.1 christos the least significant bit to record whether we have
2599 1.1 christos already generated the necessary reloc. */
2600 1.1 christos if ((off & 1) != 0)
2601 1.1 christos off &= ~1;
2602 1.1 christos else
2603 1.1 christos {
2604 1.1 christos bfd_put_64 (output_bfd, relocation,
2605 1.1 christos htab->elf.sgot->contents + off);
2606 1.1 christos
2607 1.6 christos if (bfd_link_pic (info))
2608 1.1 christos {
2609 1.1 christos asection *s;
2610 1.1 christos Elf_Internal_Rela outrel;
2611 1.1 christos bfd_byte *loc;
2612 1.1 christos
2613 1.1 christos s = htab->elf.srelgot;
2614 1.1 christos if (s == NULL)
2615 1.1 christos abort ();
2616 1.1 christos
2617 1.1 christos outrel.r_offset = (htab->elf.sgot->output_section->vma
2618 1.1 christos + htab->elf.sgot->output_offset
2619 1.1 christos + off);
2620 1.1 christos outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2621 1.1 christos outrel.r_addend = relocation;
2622 1.1 christos loc = s->contents;
2623 1.1 christos loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2624 1.1 christos bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2625 1.1 christos }
2626 1.1 christos
2627 1.1 christos local_got_offsets[r_symndx] |= 1;
2628 1.1 christos }
2629 1.1 christos }
2630 1.1 christos
2631 1.1 christos if (off >= (bfd_vma) -2)
2632 1.1 christos abort ();
2633 1.1 christos
2634 1.1 christos relocation = base_got->output_offset + off;
2635 1.1 christos
2636 1.1 christos /* For @GOTENT the relocation is against the offset between
2637 1.1 christos the instruction and the symbols entry in the GOT and not
2638 1.1 christos between the start of the GOT and the symbols entry. We
2639 1.1 christos add the vma of the GOT to get the correct value. */
2640 1.1 christos if ( r_type == R_390_GOTENT
2641 1.1 christos || r_type == R_390_GOTPLTENT)
2642 1.1 christos relocation += base_got->output_section->vma;
2643 1.1 christos
2644 1.1 christos break;
2645 1.1 christos
2646 1.1 christos case R_390_GOTOFF16:
2647 1.1 christos case R_390_GOTOFF32:
2648 1.1 christos case R_390_GOTOFF64:
2649 1.1 christos /* Relocation is relative to the start of the global offset
2650 1.1 christos table. */
2651 1.1 christos
2652 1.6 christos if (h != NULL
2653 1.6 christos && s390_is_ifunc_symbol_p (h)
2654 1.6 christos && h->def_regular
2655 1.6 christos && !bfd_link_executable (info))
2656 1.6 christos {
2657 1.6 christos relocation = (htab->elf.iplt->output_section->vma
2658 1.6 christos + htab->elf.iplt->output_offset
2659 1.6 christos + h->plt.offset
2660 1.6 christos - htab->elf.sgot->output_section->vma);
2661 1.6 christos goto do_relocation;
2662 1.6 christos }
2663 1.6 christos
2664 1.1 christos /* Note that sgot->output_offset is not involved in this
2665 1.1 christos calculation. We always want the start of .got. If we
2666 1.1 christos defined _GLOBAL_OFFSET_TABLE in a different way, as is
2667 1.1 christos permitted by the ABI, we might have to change this
2668 1.1 christos calculation. */
2669 1.1 christos relocation -= htab->elf.sgot->output_section->vma;
2670 1.1 christos break;
2671 1.1 christos
2672 1.1 christos case R_390_GOTPC:
2673 1.1 christos case R_390_GOTPCDBL:
2674 1.1 christos /* Use global offset table as symbol value. */
2675 1.1 christos relocation = htab->elf.sgot->output_section->vma;
2676 1.1 christos unresolved_reloc = FALSE;
2677 1.1 christos break;
2678 1.1 christos
2679 1.1 christos case R_390_PLT12DBL:
2680 1.1 christos case R_390_PLT16DBL:
2681 1.1 christos case R_390_PLT24DBL:
2682 1.1 christos case R_390_PLT32:
2683 1.1 christos case R_390_PLT32DBL:
2684 1.1 christos case R_390_PLT64:
2685 1.1 christos /* Relocation is to the entry for this symbol in the
2686 1.1 christos procedure linkage table. */
2687 1.1 christos
2688 1.1 christos /* Resolve a PLT32 reloc against a local symbol directly,
2689 1.1 christos without using the procedure linkage table. */
2690 1.1 christos if (h == NULL)
2691 1.1 christos break;
2692 1.1 christos
2693 1.1 christos if (h->plt.offset == (bfd_vma) -1
2694 1.1 christos || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
2695 1.1 christos {
2696 1.1 christos /* We didn't make a PLT entry for this symbol. This
2697 1.1 christos happens when statically linking PIC code, or when
2698 1.1 christos using -Bsymbolic. */
2699 1.1 christos break;
2700 1.1 christos }
2701 1.1 christos if (s390_is_ifunc_symbol_p (h))
2702 1.1 christos relocation = (htab->elf.iplt->output_section->vma
2703 1.1 christos + htab->elf.iplt->output_offset
2704 1.1 christos + h->plt.offset);
2705 1.1 christos else
2706 1.1 christos relocation = (htab->elf.splt->output_section->vma
2707 1.1 christos + htab->elf.splt->output_offset
2708 1.1 christos + h->plt.offset);
2709 1.1 christos unresolved_reloc = FALSE;
2710 1.1 christos break;
2711 1.1 christos
2712 1.1 christos case R_390_PLTOFF16:
2713 1.1 christos case R_390_PLTOFF32:
2714 1.1 christos case R_390_PLTOFF64:
2715 1.1 christos /* Relocation is to the entry for this symbol in the
2716 1.1 christos procedure linkage table relative to the start of the GOT. */
2717 1.1 christos
2718 1.1 christos /* For local symbols or if we didn't make a PLT entry for
2719 1.1 christos this symbol resolve the symbol directly. */
2720 1.1 christos if (h == NULL
2721 1.1 christos || h->plt.offset == (bfd_vma) -1
2722 1.1 christos || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
2723 1.1 christos {
2724 1.1 christos relocation -= htab->elf.sgot->output_section->vma;
2725 1.1 christos break;
2726 1.1 christos }
2727 1.1 christos
2728 1.1 christos if (s390_is_ifunc_symbol_p (h))
2729 1.1 christos relocation = (htab->elf.iplt->output_section->vma
2730 1.1 christos + htab->elf.iplt->output_offset
2731 1.1 christos + h->plt.offset
2732 1.1 christos - htab->elf.sgot->output_section->vma);
2733 1.1 christos else
2734 1.1 christos relocation = (htab->elf.splt->output_section->vma
2735 1.1 christos + htab->elf.splt->output_offset
2736 1.1 christos + h->plt.offset
2737 1.1 christos - htab->elf.sgot->output_section->vma);
2738 1.1 christos unresolved_reloc = FALSE;
2739 1.1 christos break;
2740 1.1 christos
2741 1.1 christos case R_390_PC16:
2742 1.1 christos case R_390_PC12DBL:
2743 1.1 christos case R_390_PC16DBL:
2744 1.1 christos case R_390_PC24DBL:
2745 1.1 christos case R_390_PC32:
2746 1.1 christos case R_390_PC32DBL:
2747 1.1 christos case R_390_PC64:
2748 1.6 christos /* The target of these relocs are instruction operands
2749 1.6 christos residing in read-only sections. We cannot emit a runtime
2750 1.6 christos reloc for it. */
2751 1.6 christos if (h != NULL
2752 1.6 christos && s390_is_ifunc_symbol_p (h)
2753 1.6 christos && h->def_regular
2754 1.6 christos && bfd_link_pic (info))
2755 1.6 christos {
2756 1.6 christos relocation = (htab->elf.iplt->output_section->vma
2757 1.6 christos + htab->elf.iplt->output_offset
2758 1.6 christos + h->plt.offset);
2759 1.6 christos goto do_relocation;
2760 1.6 christos }
2761 1.6 christos
2762 1.6 christos case R_390_8:
2763 1.6 christos case R_390_16:
2764 1.6 christos case R_390_32:
2765 1.6 christos case R_390_64:
2766 1.1 christos
2767 1.1 christos if (h != NULL
2768 1.1 christos && s390_is_ifunc_symbol_p (h)
2769 1.1 christos && h->def_regular)
2770 1.1 christos {
2771 1.6 christos if (!bfd_link_pic (info) || !h->non_got_ref)
2772 1.1 christos {
2773 1.1 christos /* For a non-shared object STT_GNU_IFUNC symbol must
2774 1.1 christos go through PLT. */
2775 1.1 christos relocation = (htab->elf.iplt->output_section->vma
2776 1.1 christos + htab->elf.iplt->output_offset
2777 1.1 christos + h ->plt.offset);
2778 1.1 christos goto do_relocation;
2779 1.1 christos }
2780 1.1 christos else
2781 1.1 christos {
2782 1.1 christos /* For shared objects a runtime relocation is needed. */
2783 1.1 christos
2784 1.1 christos Elf_Internal_Rela outrel;
2785 1.1 christos asection *sreloc;
2786 1.1 christos
2787 1.1 christos /* Need a dynamic relocation to get the real function
2788 1.1 christos address. */
2789 1.1 christos outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2790 1.1 christos info,
2791 1.1 christos input_section,
2792 1.1 christos rel->r_offset);
2793 1.1 christos if (outrel.r_offset == (bfd_vma) -1
2794 1.1 christos || outrel.r_offset == (bfd_vma) -2)
2795 1.1 christos abort ();
2796 1.1 christos
2797 1.1 christos outrel.r_offset += (input_section->output_section->vma
2798 1.1 christos + input_section->output_offset);
2799 1.1 christos
2800 1.1 christos if (h->dynindx == -1
2801 1.1 christos || h->forced_local
2802 1.6 christos || bfd_link_executable (info))
2803 1.1 christos {
2804 1.1 christos /* This symbol is resolved locally. */
2805 1.1 christos outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
2806 1.1 christos outrel.r_addend = (h->root.u.def.value
2807 1.1 christos + h->root.u.def.section->output_section->vma
2808 1.1 christos + h->root.u.def.section->output_offset);
2809 1.1 christos }
2810 1.1 christos else
2811 1.1 christos {
2812 1.1 christos outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2813 1.1 christos outrel.r_addend = 0;
2814 1.1 christos }
2815 1.1 christos
2816 1.1 christos sreloc = htab->elf.irelifunc;
2817 1.1 christos elf_append_rela (output_bfd, sreloc, &outrel);
2818 1.1 christos
2819 1.1 christos /* If this reloc is against an external symbol, we
2820 1.1 christos do not want to fiddle with the addend. Otherwise,
2821 1.1 christos we need to include the symbol value so that it
2822 1.1 christos becomes an addend for the dynamic reloc. For an
2823 1.1 christos internal symbol, we have updated addend. */
2824 1.1 christos continue;
2825 1.1 christos }
2826 1.1 christos }
2827 1.1 christos
2828 1.1 christos if ((input_section->flags & SEC_ALLOC) == 0)
2829 1.1 christos break;
2830 1.1 christos
2831 1.6 christos if ((bfd_link_pic (info)
2832 1.1 christos && (h == NULL
2833 1.1 christos || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2834 1.1 christos || h->root.type != bfd_link_hash_undefweak)
2835 1.1 christos && ((r_type != R_390_PC16
2836 1.1 christos && r_type != R_390_PC12DBL
2837 1.1 christos && r_type != R_390_PC16DBL
2838 1.1 christos && r_type != R_390_PC24DBL
2839 1.1 christos && r_type != R_390_PC32
2840 1.1 christos && r_type != R_390_PC32DBL
2841 1.1 christos && r_type != R_390_PC64)
2842 1.1 christos || !SYMBOL_CALLS_LOCAL (info, h)))
2843 1.1 christos || (ELIMINATE_COPY_RELOCS
2844 1.6 christos && !bfd_link_pic (info)
2845 1.1 christos && h != NULL
2846 1.1 christos && h->dynindx != -1
2847 1.1 christos && !h->non_got_ref
2848 1.1 christos && ((h->def_dynamic
2849 1.1 christos && !h->def_regular)
2850 1.1 christos || h->root.type == bfd_link_hash_undefweak
2851 1.1 christos || h->root.type == bfd_link_hash_undefined)))
2852 1.1 christos {
2853 1.1 christos Elf_Internal_Rela outrel;
2854 1.1 christos bfd_boolean skip, relocate;
2855 1.1 christos asection *sreloc;
2856 1.1 christos bfd_byte *loc;
2857 1.1 christos
2858 1.1 christos /* When generating a shared object, these relocations
2859 1.1 christos are copied into the output file to be resolved at run
2860 1.1 christos time. */
2861 1.1 christos skip = FALSE;
2862 1.1 christos relocate = FALSE;
2863 1.1 christos
2864 1.1 christos outrel.r_offset =
2865 1.1 christos _bfd_elf_section_offset (output_bfd, info, input_section,
2866 1.1 christos rel->r_offset);
2867 1.1 christos if (outrel.r_offset == (bfd_vma) -1)
2868 1.1 christos skip = TRUE;
2869 1.1 christos else if (outrel.r_offset == (bfd_vma) -2)
2870 1.1 christos skip = TRUE, relocate = TRUE;
2871 1.1 christos
2872 1.1 christos outrel.r_offset += (input_section->output_section->vma
2873 1.1 christos + input_section->output_offset);
2874 1.1 christos
2875 1.1 christos if (skip)
2876 1.1 christos memset (&outrel, 0, sizeof outrel);
2877 1.1 christos else if (h != NULL
2878 1.1 christos && h->dynindx != -1
2879 1.1 christos && (r_type == R_390_PC16
2880 1.1 christos || r_type == R_390_PC12DBL
2881 1.1 christos || r_type == R_390_PC16DBL
2882 1.1 christos || r_type == R_390_PC24DBL
2883 1.1 christos || r_type == R_390_PC32
2884 1.1 christos || r_type == R_390_PC32DBL
2885 1.1 christos || r_type == R_390_PC64
2886 1.6 christos || !bfd_link_pic (info)
2887 1.1 christos || !SYMBOLIC_BIND (info, h)
2888 1.1 christos || !h->def_regular))
2889 1.1 christos {
2890 1.1 christos outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2891 1.1 christos outrel.r_addend = rel->r_addend;
2892 1.1 christos }
2893 1.1 christos else
2894 1.1 christos {
2895 1.1 christos /* This symbol is local, or marked to become local. */
2896 1.1 christos outrel.r_addend = relocation + rel->r_addend;
2897 1.1 christos if (r_type == R_390_64)
2898 1.1 christos {
2899 1.1 christos relocate = TRUE;
2900 1.1 christos outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2901 1.1 christos }
2902 1.1 christos else
2903 1.1 christos {
2904 1.1 christos long sindx;
2905 1.1 christos
2906 1.1 christos if (bfd_is_abs_section (sec))
2907 1.1 christos sindx = 0;
2908 1.1 christos else if (sec == NULL || sec->owner == NULL)
2909 1.1 christos {
2910 1.1 christos bfd_set_error(bfd_error_bad_value);
2911 1.1 christos return FALSE;
2912 1.1 christos }
2913 1.1 christos else
2914 1.1 christos {
2915 1.1 christos asection *osec;
2916 1.1 christos
2917 1.1 christos osec = sec->output_section;
2918 1.1 christos sindx = elf_section_data (osec)->dynindx;
2919 1.1 christos
2920 1.1 christos if (sindx == 0)
2921 1.1 christos {
2922 1.1 christos osec = htab->elf.text_index_section;
2923 1.1 christos sindx = elf_section_data (osec)->dynindx;
2924 1.1 christos }
2925 1.1 christos BFD_ASSERT (sindx != 0);
2926 1.1 christos
2927 1.1 christos /* We are turning this relocation into one
2928 1.1 christos against a section symbol, so subtract out
2929 1.1 christos the output section's address but not the
2930 1.1 christos offset of the input section in the output
2931 1.1 christos section. */
2932 1.1 christos outrel.r_addend -= osec->vma;
2933 1.1 christos }
2934 1.1 christos outrel.r_info = ELF64_R_INFO (sindx, r_type);
2935 1.1 christos }
2936 1.1 christos }
2937 1.1 christos
2938 1.1 christos sreloc = elf_section_data (input_section)->sreloc;
2939 1.1 christos if (sreloc == NULL)
2940 1.1 christos abort ();
2941 1.1 christos
2942 1.1 christos loc = sreloc->contents;
2943 1.1 christos loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2944 1.1 christos bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2945 1.1 christos
2946 1.1 christos /* If this reloc is against an external symbol, we do
2947 1.1 christos not want to fiddle with the addend. Otherwise, we
2948 1.1 christos need to include the symbol value so that it becomes
2949 1.1 christos an addend for the dynamic reloc. */
2950 1.1 christos if (! relocate)
2951 1.1 christos continue;
2952 1.1 christos }
2953 1.1 christos
2954 1.1 christos break;
2955 1.1 christos
2956 1.1 christos /* Relocations for tls literal pool entries. */
2957 1.1 christos case R_390_TLS_IE64:
2958 1.6 christos if (bfd_link_pic (info))
2959 1.1 christos {
2960 1.1 christos Elf_Internal_Rela outrel;
2961 1.1 christos asection *sreloc;
2962 1.1 christos bfd_byte *loc;
2963 1.1 christos
2964 1.1 christos outrel.r_offset = rel->r_offset
2965 1.1 christos + input_section->output_section->vma
2966 1.1 christos + input_section->output_offset;
2967 1.1 christos outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2968 1.1 christos sreloc = elf_section_data (input_section)->sreloc;
2969 1.1 christos if (sreloc == NULL)
2970 1.1 christos abort ();
2971 1.1 christos loc = sreloc->contents;
2972 1.1 christos loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2973 1.1 christos bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2974 1.1 christos }
2975 1.1 christos /* Fall through. */
2976 1.1 christos
2977 1.1 christos case R_390_TLS_GD64:
2978 1.1 christos case R_390_TLS_GOTIE64:
2979 1.1 christos r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2980 1.1 christos tls_type = GOT_UNKNOWN;
2981 1.1 christos if (h == NULL && local_got_offsets)
2982 1.1 christos tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2983 1.1 christos else if (h != NULL)
2984 1.1 christos {
2985 1.1 christos tls_type = elf_s390_hash_entry(h)->tls_type;
2986 1.6 christos if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2987 1.1 christos r_type = R_390_TLS_LE64;
2988 1.1 christos }
2989 1.1 christos if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2990 1.1 christos r_type = R_390_TLS_IE64;
2991 1.1 christos
2992 1.1 christos if (r_type == R_390_TLS_LE64)
2993 1.1 christos {
2994 1.1 christos /* This relocation gets optimized away by the local exec
2995 1.1 christos access optimization. */
2996 1.1 christos BFD_ASSERT (! unresolved_reloc);
2997 1.1 christos bfd_put_64 (output_bfd, -tpoff (info, relocation),
2998 1.1 christos contents + rel->r_offset);
2999 1.1 christos continue;
3000 1.1 christos }
3001 1.1 christos
3002 1.1 christos if (htab->elf.sgot == NULL)
3003 1.1 christos abort ();
3004 1.1 christos
3005 1.1 christos if (h != NULL)
3006 1.1 christos off = h->got.offset;
3007 1.1 christos else
3008 1.1 christos {
3009 1.1 christos if (local_got_offsets == NULL)
3010 1.1 christos abort ();
3011 1.1 christos
3012 1.1 christos off = local_got_offsets[r_symndx];
3013 1.1 christos }
3014 1.1 christos
3015 1.1 christos emit_tls_relocs:
3016 1.1 christos
3017 1.1 christos if ((off & 1) != 0)
3018 1.1 christos off &= ~1;
3019 1.1 christos else
3020 1.1 christos {
3021 1.1 christos Elf_Internal_Rela outrel;
3022 1.1 christos bfd_byte *loc;
3023 1.1 christos int dr_type, indx;
3024 1.1 christos
3025 1.1 christos if (htab->elf.srelgot == NULL)
3026 1.1 christos abort ();
3027 1.1 christos
3028 1.1 christos outrel.r_offset = (htab->elf.sgot->output_section->vma
3029 1.1 christos + htab->elf.sgot->output_offset + off);
3030 1.1 christos
3031 1.1 christos indx = h && h->dynindx != -1 ? h->dynindx : 0;
3032 1.1 christos if (r_type == R_390_TLS_GD64)
3033 1.1 christos dr_type = R_390_TLS_DTPMOD;
3034 1.1 christos else
3035 1.1 christos dr_type = R_390_TLS_TPOFF;
3036 1.1 christos if (dr_type == R_390_TLS_TPOFF && indx == 0)
3037 1.1 christos outrel.r_addend = relocation - dtpoff_base (info);
3038 1.1 christos else
3039 1.1 christos outrel.r_addend = 0;
3040 1.1 christos outrel.r_info = ELF64_R_INFO (indx, dr_type);
3041 1.1 christos loc = htab->elf.srelgot->contents;
3042 1.1 christos loc += htab->elf.srelgot->reloc_count++
3043 1.1 christos * sizeof (Elf64_External_Rela);
3044 1.1 christos bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3045 1.1 christos
3046 1.1 christos if (r_type == R_390_TLS_GD64)
3047 1.1 christos {
3048 1.1 christos if (indx == 0)
3049 1.1 christos {
3050 1.1 christos BFD_ASSERT (! unresolved_reloc);
3051 1.1 christos bfd_put_64 (output_bfd,
3052 1.1 christos relocation - dtpoff_base (info),
3053 1.1 christos htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3054 1.1 christos }
3055 1.1 christos else
3056 1.1 christos {
3057 1.1 christos outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
3058 1.1 christos outrel.r_offset += GOT_ENTRY_SIZE;
3059 1.1 christos outrel.r_addend = 0;
3060 1.1 christos htab->elf.srelgot->reloc_count++;
3061 1.1 christos loc += sizeof (Elf64_External_Rela);
3062 1.1 christos bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3063 1.1 christos }
3064 1.1 christos }
3065 1.1 christos
3066 1.1 christos if (h != NULL)
3067 1.1 christos h->got.offset |= 1;
3068 1.1 christos else
3069 1.1 christos local_got_offsets[r_symndx] |= 1;
3070 1.1 christos }
3071 1.1 christos
3072 1.1 christos if (off >= (bfd_vma) -2)
3073 1.1 christos abort ();
3074 1.1 christos if (r_type == ELF64_R_TYPE (rel->r_info))
3075 1.1 christos {
3076 1.1 christos relocation = htab->elf.sgot->output_offset + off;
3077 1.1 christos if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
3078 1.1 christos relocation += htab->elf.sgot->output_section->vma;
3079 1.1 christos unresolved_reloc = FALSE;
3080 1.1 christos }
3081 1.1 christos else
3082 1.1 christos {
3083 1.1 christos bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
3084 1.1 christos contents + rel->r_offset);
3085 1.1 christos continue;
3086 1.1 christos }
3087 1.1 christos break;
3088 1.1 christos
3089 1.1 christos case R_390_TLS_GOTIE12:
3090 1.1 christos case R_390_TLS_GOTIE20:
3091 1.1 christos case R_390_TLS_IEENT:
3092 1.1 christos if (h == NULL)
3093 1.1 christos {
3094 1.1 christos if (local_got_offsets == NULL)
3095 1.1 christos abort();
3096 1.1 christos off = local_got_offsets[r_symndx];
3097 1.6 christos if (bfd_link_pic (info))
3098 1.1 christos goto emit_tls_relocs;
3099 1.1 christos }
3100 1.1 christos else
3101 1.1 christos {
3102 1.1 christos off = h->got.offset;
3103 1.1 christos tls_type = elf_s390_hash_entry(h)->tls_type;
3104 1.6 christos if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE)
3105 1.1 christos goto emit_tls_relocs;
3106 1.1 christos }
3107 1.1 christos
3108 1.1 christos if (htab->elf.sgot == NULL)
3109 1.1 christos abort ();
3110 1.1 christos
3111 1.1 christos BFD_ASSERT (! unresolved_reloc);
3112 1.1 christos bfd_put_64 (output_bfd, -tpoff (info, relocation),
3113 1.1 christos htab->elf.sgot->contents + off);
3114 1.1 christos relocation = htab->elf.sgot->output_offset + off;
3115 1.1 christos if (r_type == R_390_TLS_IEENT)
3116 1.1 christos relocation += htab->elf.sgot->output_section->vma;
3117 1.1 christos unresolved_reloc = FALSE;
3118 1.1 christos break;
3119 1.1 christos
3120 1.1 christos case R_390_TLS_LDM64:
3121 1.6 christos if (! bfd_link_pic (info))
3122 1.1 christos /* The literal pool entry this relocation refers to gets ignored
3123 1.1 christos by the optimized code of the local exec model. Do nothing
3124 1.1 christos and the value will turn out zero. */
3125 1.1 christos continue;
3126 1.1 christos
3127 1.1 christos if (htab->elf.sgot == NULL)
3128 1.1 christos abort ();
3129 1.1 christos
3130 1.1 christos off = htab->tls_ldm_got.offset;
3131 1.1 christos if (off & 1)
3132 1.1 christos off &= ~1;
3133 1.1 christos else
3134 1.1 christos {
3135 1.1 christos Elf_Internal_Rela outrel;
3136 1.1 christos bfd_byte *loc;
3137 1.1 christos
3138 1.1 christos if (htab->elf.srelgot == NULL)
3139 1.1 christos abort ();
3140 1.1 christos
3141 1.1 christos outrel.r_offset = (htab->elf.sgot->output_section->vma
3142 1.1 christos + htab->elf.sgot->output_offset + off);
3143 1.1 christos
3144 1.1 christos bfd_put_64 (output_bfd, 0,
3145 1.1 christos htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
3146 1.1 christos outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
3147 1.1 christos outrel.r_addend = 0;
3148 1.1 christos loc = htab->elf.srelgot->contents;
3149 1.1 christos loc += htab->elf.srelgot->reloc_count++
3150 1.1 christos * sizeof (Elf64_External_Rela);
3151 1.1 christos bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3152 1.1 christos htab->tls_ldm_got.offset |= 1;
3153 1.1 christos }
3154 1.1 christos relocation = htab->elf.sgot->output_offset + off;
3155 1.1 christos unresolved_reloc = FALSE;
3156 1.1 christos break;
3157 1.1 christos
3158 1.1 christos case R_390_TLS_LE64:
3159 1.6 christos if (bfd_link_dll (info))
3160 1.1 christos {
3161 1.1 christos /* Linking a shared library with non-fpic code requires
3162 1.1 christos a R_390_TLS_TPOFF relocation. */
3163 1.1 christos Elf_Internal_Rela outrel;
3164 1.1 christos asection *sreloc;
3165 1.1 christos bfd_byte *loc;
3166 1.1 christos int indx;
3167 1.1 christos
3168 1.1 christos outrel.r_offset = rel->r_offset
3169 1.1 christos + input_section->output_section->vma
3170 1.1 christos + input_section->output_offset;
3171 1.1 christos if (h != NULL && h->dynindx != -1)
3172 1.1 christos indx = h->dynindx;
3173 1.1 christos else
3174 1.1 christos indx = 0;
3175 1.1 christos outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
3176 1.1 christos if (indx == 0)
3177 1.1 christos outrel.r_addend = relocation - dtpoff_base (info);
3178 1.1 christos else
3179 1.1 christos outrel.r_addend = 0;
3180 1.1 christos sreloc = elf_section_data (input_section)->sreloc;
3181 1.1 christos if (sreloc == NULL)
3182 1.1 christos abort ();
3183 1.1 christos loc = sreloc->contents;
3184 1.1 christos loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
3185 1.1 christos bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3186 1.1 christos }
3187 1.1 christos else
3188 1.1 christos {
3189 1.1 christos BFD_ASSERT (! unresolved_reloc);
3190 1.1 christos bfd_put_64 (output_bfd, -tpoff (info, relocation),
3191 1.1 christos contents + rel->r_offset);
3192 1.1 christos }
3193 1.1 christos continue;
3194 1.1 christos
3195 1.1 christos case R_390_TLS_LDO64:
3196 1.6 christos if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
3197 1.1 christos relocation -= dtpoff_base (info);
3198 1.1 christos else
3199 1.1 christos /* When converting LDO to LE, we must negate. */
3200 1.1 christos relocation = -tpoff (info, relocation);
3201 1.1 christos break;
3202 1.1 christos
3203 1.1 christos /* Relocations for tls instructions. */
3204 1.1 christos case R_390_TLS_LOAD:
3205 1.1 christos case R_390_TLS_GDCALL:
3206 1.1 christos case R_390_TLS_LDCALL:
3207 1.1 christos tls_type = GOT_UNKNOWN;
3208 1.1 christos if (h == NULL && local_got_offsets)
3209 1.1 christos tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
3210 1.1 christos else if (h != NULL)
3211 1.1 christos tls_type = elf_s390_hash_entry(h)->tls_type;
3212 1.1 christos
3213 1.1 christos if (tls_type == GOT_TLS_GD)
3214 1.1 christos continue;
3215 1.1 christos
3216 1.1 christos if (r_type == R_390_TLS_LOAD)
3217 1.1 christos {
3218 1.6 christos if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3219 1.1 christos {
3220 1.1 christos /* IE->LE transition. Four valid cases:
3221 1.1 christos lg %rx,(0,%ry) -> sllg %rx,%ry,0
3222 1.1 christos lg %rx,(%ry,0) -> sllg %rx,%ry,0
3223 1.1 christos lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
3224 1.1 christos lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
3225 1.1 christos unsigned int insn0, insn1, ry;
3226 1.1 christos
3227 1.1 christos insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3228 1.1 christos insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3229 1.1 christos if (insn1 != 0x0004)
3230 1.1 christos invalid_tls_insn (input_bfd, input_section, rel);
3231 1.1 christos ry = 0;
3232 1.1 christos if ((insn0 & 0xff00f000) == 0xe3000000)
3233 1.1 christos /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
3234 1.1 christos ry = (insn0 & 0x000f0000);
3235 1.1 christos else if ((insn0 & 0xff0f0000) == 0xe3000000)
3236 1.1 christos /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
3237 1.1 christos ry = (insn0 & 0x0000f000) << 4;
3238 1.1 christos else if ((insn0 & 0xff00f000) == 0xe300c000)
3239 1.1 christos /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
3240 1.1 christos ry = (insn0 & 0x000f0000);
3241 1.1 christos else if ((insn0 & 0xff0f0000) == 0xe30c0000)
3242 1.1 christos /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
3243 1.1 christos ry = (insn0 & 0x0000f000) << 4;
3244 1.1 christos else
3245 1.1 christos invalid_tls_insn (input_bfd, input_section, rel);
3246 1.1 christos insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
3247 1.1 christos insn1 = 0x000d;
3248 1.1 christos bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3249 1.1 christos bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3250 1.1 christos }
3251 1.1 christos }
3252 1.1 christos else if (r_type == R_390_TLS_GDCALL)
3253 1.1 christos {
3254 1.1 christos unsigned int insn0, insn1;
3255 1.1 christos
3256 1.1 christos insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3257 1.1 christos insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3258 1.1 christos if ((insn0 & 0xffff0000) != 0xc0e50000)
3259 1.1 christos invalid_tls_insn (input_bfd, input_section, rel);
3260 1.6 christos if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3261 1.1 christos {
3262 1.1 christos /* GD->LE transition.
3263 1.1 christos brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3264 1.1 christos insn0 = 0xc0040000;
3265 1.1 christos insn1 = 0x0000;
3266 1.1 christos }
3267 1.1 christos else
3268 1.1 christos {
3269 1.1 christos /* GD->IE transition.
3270 1.1 christos brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
3271 1.1 christos insn0 = 0xe322c000;
3272 1.1 christos insn1 = 0x0004;
3273 1.1 christos }
3274 1.1 christos bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3275 1.1 christos bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3276 1.1 christos }
3277 1.1 christos else if (r_type == R_390_TLS_LDCALL)
3278 1.1 christos {
3279 1.6 christos if (!bfd_link_pic (info))
3280 1.1 christos {
3281 1.1 christos unsigned int insn0, insn1;
3282 1.1 christos
3283 1.1 christos insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
3284 1.1 christos insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
3285 1.1 christos if ((insn0 & 0xffff0000) != 0xc0e50000)
3286 1.1 christos invalid_tls_insn (input_bfd, input_section, rel);
3287 1.1 christos /* LD->LE transition.
3288 1.1 christos brasl %r14,__tls_get_addr@plt -> brcl 0,. */
3289 1.1 christos insn0 = 0xc0040000;
3290 1.1 christos insn1 = 0x0000;
3291 1.1 christos bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
3292 1.1 christos bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
3293 1.1 christos }
3294 1.1 christos }
3295 1.1 christos continue;
3296 1.1 christos
3297 1.1 christos default:
3298 1.1 christos break;
3299 1.1 christos }
3300 1.1 christos
3301 1.1 christos /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3302 1.1 christos because such sections are not SEC_ALLOC and thus ld.so will
3303 1.1 christos not process them. */
3304 1.1 christos if (unresolved_reloc
3305 1.1 christos && !((input_section->flags & SEC_DEBUGGING) != 0
3306 1.1 christos && h->def_dynamic)
3307 1.1 christos && _bfd_elf_section_offset (output_bfd, info, input_section,
3308 1.1 christos rel->r_offset) != (bfd_vma) -1)
3309 1.1 christos (*_bfd_error_handler)
3310 1.1 christos (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3311 1.1 christos input_bfd,
3312 1.1 christos input_section,
3313 1.1 christos (long) rel->r_offset,
3314 1.1 christos howto->name,
3315 1.1 christos h->root.root.string);
3316 1.1 christos
3317 1.1 christos do_relocation:
3318 1.1 christos
3319 1.1 christos /* When applying a 24 bit reloc we need to start one byte
3320 1.1 christos earlier. Otherwise the 32 bit get/put bfd operations might
3321 1.1 christos access a byte after the actual section. */
3322 1.1 christos if (r_type == R_390_PC24DBL
3323 1.1 christos || r_type == R_390_PLT24DBL)
3324 1.1 christos rel->r_offset--;
3325 1.1 christos
3326 1.1 christos if (r_type == R_390_20
3327 1.1 christos || r_type == R_390_GOT20
3328 1.1 christos || r_type == R_390_GOTPLT20
3329 1.1 christos || r_type == R_390_TLS_GOTIE20)
3330 1.1 christos {
3331 1.1 christos relocation += rel->r_addend;
3332 1.1 christos relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3333 1.1 christos r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3334 1.1 christos contents, rel->r_offset,
3335 1.1 christos relocation, 0);
3336 1.1 christos }
3337 1.1 christos else
3338 1.1 christos r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3339 1.1 christos contents, rel->r_offset,
3340 1.1 christos relocation, rel->r_addend);
3341 1.1 christos
3342 1.1 christos if (r != bfd_reloc_ok)
3343 1.1 christos {
3344 1.1 christos const char *name;
3345 1.1 christos
3346 1.1 christos if (h != NULL)
3347 1.1 christos name = h->root.root.string;
3348 1.1 christos else
3349 1.1 christos {
3350 1.1 christos name = bfd_elf_string_from_elf_section (input_bfd,
3351 1.1 christos symtab_hdr->sh_link,
3352 1.1 christos sym->st_name);
3353 1.1 christos if (name == NULL)
3354 1.1 christos return FALSE;
3355 1.1 christos if (*name == '\0')
3356 1.1 christos name = bfd_section_name (input_bfd, sec);
3357 1.1 christos }
3358 1.1 christos
3359 1.1 christos if (r == bfd_reloc_overflow)
3360 1.6 christos (*info->callbacks->reloc_overflow)
3361 1.6 christos (info, (h ? &h->root : NULL), name, howto->name,
3362 1.6 christos (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3363 1.1 christos else
3364 1.1 christos {
3365 1.1 christos (*_bfd_error_handler)
3366 1.1 christos (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3367 1.1 christos input_bfd, input_section,
3368 1.1 christos (long) rel->r_offset, name, (int) r);
3369 1.1 christos return FALSE;
3370 1.1 christos }
3371 1.1 christos }
3372 1.1 christos }
3373 1.1 christos
3374 1.1 christos return TRUE;
3375 1.1 christos }
3376 1.1 christos
3377 1.1 christos /* Generate the PLT slots together with the dynamic relocations needed
3378 1.1 christos for IFUNC symbols. */
3379 1.1 christos
3380 1.1 christos static void
3381 1.1 christos elf_s390_finish_ifunc_symbol (bfd *output_bfd,
3382 1.1 christos struct bfd_link_info *info,
3383 1.1 christos struct elf_link_hash_entry *h,
3384 1.1 christos struct elf_s390_link_hash_table *htab,
3385 1.1 christos bfd_vma plt_offset,
3386 1.1 christos bfd_vma resolver_address)
3387 1.1 christos {
3388 1.1 christos bfd_vma plt_index;
3389 1.1 christos bfd_vma got_offset;
3390 1.1 christos Elf_Internal_Rela rela;
3391 1.1 christos bfd_byte *loc;
3392 1.1 christos asection *plt, *gotplt, *relplt;
3393 1.1 christos
3394 1.1 christos if (htab->elf.iplt == NULL
3395 1.1 christos || htab->elf.igotplt == NULL
3396 1.1 christos || htab->elf.irelplt == NULL)
3397 1.1 christos abort ();
3398 1.1 christos
3399 1.1 christos /* Index of the PLT slot within iplt section. */
3400 1.1 christos plt_index = plt_offset / PLT_ENTRY_SIZE;
3401 1.1 christos plt = htab->elf.iplt;
3402 1.1 christos /* Offset into the igot.plt section. */
3403 1.1 christos got_offset = plt_index * GOT_ENTRY_SIZE;
3404 1.1 christos gotplt = htab->elf.igotplt;
3405 1.1 christos relplt = htab->elf.irelplt;
3406 1.1 christos
3407 1.1 christos /* Fill in the blueprint of a PLT. */
3408 1.1 christos memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
3409 1.1 christos PLT_ENTRY_SIZE);
3410 1.1 christos
3411 1.1 christos /* Fixup the relative address to the GOT entry */
3412 1.1 christos bfd_put_32 (output_bfd,
3413 1.1 christos (gotplt->output_section->vma +
3414 1.1 christos gotplt->output_offset + got_offset
3415 1.1 christos - (plt->output_section->vma +
3416 1.1 christos plt->output_offset +
3417 1.1 christos plt_offset))/2,
3418 1.1 christos plt->contents + plt_offset + 2);
3419 1.1 christos /* Fixup the relative branch to PLT 0 */
3420 1.1 christos bfd_put_32 (output_bfd, - (plt->output_offset +
3421 1.1 christos (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3422 1.1 christos plt->contents + plt_offset + 24);
3423 1.1 christos /* Fixup offset into .rela.plt section. */
3424 1.1 christos bfd_put_32 (output_bfd, relplt->output_offset +
3425 1.1 christos plt_index * sizeof (Elf64_External_Rela),
3426 1.1 christos plt->contents + plt_offset + 28);
3427 1.1 christos
3428 1.1 christos /* Fill in the entry in the global offset table.
3429 1.1 christos Points to instruction after GOT offset. */
3430 1.1 christos bfd_put_64 (output_bfd,
3431 1.1 christos (plt->output_section->vma
3432 1.1 christos + plt->output_offset
3433 1.1 christos + plt_offset
3434 1.1 christos + 14),
3435 1.1 christos gotplt->contents + got_offset);
3436 1.1 christos
3437 1.1 christos /* Fill in the entry in the .rela.plt section. */
3438 1.1 christos rela.r_offset = (gotplt->output_section->vma
3439 1.1 christos + gotplt->output_offset
3440 1.1 christos + got_offset);
3441 1.1 christos
3442 1.1 christos if (!h
3443 1.1 christos || h->dynindx == -1
3444 1.6 christos || ((bfd_link_executable (info)
3445 1.1 christos || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3446 1.1 christos && h->def_regular))
3447 1.1 christos {
3448 1.1 christos /* The symbol can be locally resolved. */
3449 1.1 christos rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
3450 1.1 christos rela.r_addend = resolver_address;
3451 1.1 christos }
3452 1.1 christos else
3453 1.1 christos {
3454 1.1 christos rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3455 1.1 christos rela.r_addend = 0;
3456 1.1 christos }
3457 1.1 christos
3458 1.1 christos loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
3459 1.1 christos bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3460 1.1 christos }
3461 1.1 christos
3462 1.1 christos
3463 1.1 christos /* Finish up dynamic symbol handling. We set the contents of various
3464 1.1 christos dynamic sections here. */
3465 1.1 christos
3466 1.1 christos static bfd_boolean
3467 1.1 christos elf_s390_finish_dynamic_symbol (bfd *output_bfd,
3468 1.1 christos struct bfd_link_info *info,
3469 1.1 christos struct elf_link_hash_entry *h,
3470 1.1 christos Elf_Internal_Sym *sym)
3471 1.1 christos {
3472 1.1 christos struct elf_s390_link_hash_table *htab;
3473 1.1 christos struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
3474 1.1 christos
3475 1.1 christos htab = elf_s390_hash_table (info);
3476 1.1 christos if (htab == NULL)
3477 1.1 christos return FALSE;
3478 1.1 christos
3479 1.1 christos if (h->plt.offset != (bfd_vma) -1)
3480 1.1 christos {
3481 1.1 christos bfd_vma plt_index;
3482 1.1 christos bfd_vma got_offset;
3483 1.1 christos Elf_Internal_Rela rela;
3484 1.1 christos bfd_byte *loc;
3485 1.1 christos
3486 1.1 christos /* This symbol has an entry in the procedure linkage table. Set
3487 1.1 christos it up. */
3488 1.6 christos if (s390_is_ifunc_symbol_p (h) && h->def_regular)
3489 1.1 christos {
3490 1.6 christos elf_s390_finish_ifunc_symbol (output_bfd, info, h,
3491 1.6 christos htab, h->plt.offset,
3492 1.6 christos eh->ifunc_resolver_address +
3493 1.6 christos eh->ifunc_resolver_section->output_offset +
3494 1.6 christos eh->ifunc_resolver_section->output_section->vma);
3495 1.6 christos
3496 1.6 christos /* Do not return yet. Handling of explicit GOT slots of
3497 1.6 christos IFUNC symbols is below. */
3498 1.1 christos }
3499 1.1 christos else
3500 1.1 christos {
3501 1.1 christos if (h->dynindx == -1
3502 1.1 christos || htab->elf.splt == NULL
3503 1.1 christos || htab->elf.sgotplt == NULL
3504 1.1 christos || htab->elf.srelplt == NULL)
3505 1.1 christos abort ();
3506 1.1 christos
3507 1.1 christos /* Calc. index no.
3508 1.1 christos Current offset - size first entry / entry size. */
3509 1.1 christos plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3510 1.1 christos
3511 1.1 christos /* Offset in GOT is PLT index plus GOT headers(3) times 8,
3512 1.1 christos addr & GOT addr. */
3513 1.1 christos got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3514 1.1 christos
3515 1.1 christos /* Fill in the blueprint of a PLT. */
3516 1.1 christos memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
3517 1.1 christos PLT_ENTRY_SIZE);
3518 1.1 christos
3519 1.1 christos /* Fixup the relative address to the GOT entry */
3520 1.1 christos bfd_put_32 (output_bfd,
3521 1.1 christos (htab->elf.sgotplt->output_section->vma +
3522 1.1 christos htab->elf.sgotplt->output_offset + got_offset
3523 1.1 christos - (htab->elf.splt->output_section->vma +
3524 1.1 christos htab->elf.splt->output_offset +
3525 1.1 christos h->plt.offset))/2,
3526 1.1 christos htab->elf.splt->contents + h->plt.offset + 2);
3527 1.1 christos /* Fixup the relative branch to PLT 0 */
3528 1.1 christos bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3529 1.1 christos (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3530 1.1 christos htab->elf.splt->contents + h->plt.offset + 24);
3531 1.1 christos /* Fixup offset into .rela.plt section. */
3532 1.1 christos bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3533 1.1 christos htab->elf.splt->contents + h->plt.offset + 28);
3534 1.1 christos
3535 1.1 christos /* Fill in the entry in the global offset table.
3536 1.1 christos Points to instruction after GOT offset. */
3537 1.1 christos bfd_put_64 (output_bfd,
3538 1.1 christos (htab->elf.splt->output_section->vma
3539 1.1 christos + htab->elf.splt->output_offset
3540 1.1 christos + h->plt.offset
3541 1.1 christos + 14),
3542 1.1 christos htab->elf.sgotplt->contents + got_offset);
3543 1.1 christos
3544 1.1 christos /* Fill in the entry in the .rela.plt section. */
3545 1.1 christos rela.r_offset = (htab->elf.sgotplt->output_section->vma
3546 1.1 christos + htab->elf.sgotplt->output_offset
3547 1.1 christos + got_offset);
3548 1.1 christos rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3549 1.1 christos rela.r_addend = 0;
3550 1.1 christos loc = htab->elf.srelplt->contents + plt_index *
3551 1.1 christos sizeof (Elf64_External_Rela);
3552 1.1 christos bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3553 1.1 christos
3554 1.1 christos if (!h->def_regular)
3555 1.1 christos {
3556 1.1 christos /* Mark the symbol as undefined, rather than as defined in
3557 1.1 christos the .plt section. Leave the value alone. This is a clue
3558 1.1 christos for the dynamic linker, to make function pointer
3559 1.1 christos comparisons work between an application and shared
3560 1.1 christos library. */
3561 1.1 christos sym->st_shndx = SHN_UNDEF;
3562 1.1 christos }
3563 1.1 christos }
3564 1.1 christos }
3565 1.1 christos
3566 1.1 christos if (h->got.offset != (bfd_vma) -1
3567 1.1 christos && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3568 1.1 christos && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3569 1.1 christos && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3570 1.1 christos {
3571 1.1 christos Elf_Internal_Rela rela;
3572 1.1 christos bfd_byte *loc;
3573 1.1 christos
3574 1.1 christos /* This symbol has an entry in the global offset table. Set it
3575 1.1 christos up. */
3576 1.1 christos if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
3577 1.1 christos abort ();
3578 1.1 christos
3579 1.1 christos rela.r_offset = (htab->elf.sgot->output_section->vma
3580 1.1 christos + htab->elf.sgot->output_offset
3581 1.1 christos + (h->got.offset &~ (bfd_vma) 1));
3582 1.1 christos
3583 1.1 christos if (h->def_regular && s390_is_ifunc_symbol_p (h))
3584 1.1 christos {
3585 1.6 christos if (bfd_link_pic (info))
3586 1.1 christos {
3587 1.1 christos /* An explicit GOT slot usage needs GLOB_DAT. If the
3588 1.1 christos symbol references local the implicit got.iplt slot
3589 1.1 christos will be used and the IRELATIVE reloc has been created
3590 1.1 christos above. */
3591 1.1 christos goto do_glob_dat;
3592 1.1 christos }
3593 1.1 christos else
3594 1.1 christos {
3595 1.1 christos /* For non-shared objects explicit GOT slots must be
3596 1.1 christos filled with the PLT slot address for pointer
3597 1.1 christos equality reasons. */
3598 1.1 christos bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
3599 1.1 christos + htab->elf.iplt->output_offset
3600 1.1 christos + h->plt.offset),
3601 1.1 christos htab->elf.sgot->contents + h->got.offset);
3602 1.1 christos return TRUE;
3603 1.1 christos }
3604 1.1 christos }
3605 1.6 christos else if (bfd_link_pic (info)
3606 1.1 christos && SYMBOL_REFERENCES_LOCAL (info, h))
3607 1.1 christos {
3608 1.1 christos /* If this is a static link, or it is a -Bsymbolic link and
3609 1.1 christos the symbol is defined locally or was forced to be local
3610 1.1 christos because of a version file, we just want to emit a
3611 1.1 christos RELATIVE reloc. The entry in the global offset table
3612 1.1 christos will already have been initialized in the
3613 1.1 christos relocate_section function. */
3614 1.1 christos if (!h->def_regular)
3615 1.1 christos return FALSE;
3616 1.1 christos BFD_ASSERT((h->got.offset & 1) != 0);
3617 1.1 christos rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3618 1.1 christos rela.r_addend = (h->root.u.def.value
3619 1.1 christos + h->root.u.def.section->output_section->vma
3620 1.1 christos + h->root.u.def.section->output_offset);
3621 1.1 christos }
3622 1.1 christos else
3623 1.1 christos {
3624 1.1 christos BFD_ASSERT((h->got.offset & 1) == 0);
3625 1.1 christos do_glob_dat:
3626 1.1 christos bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
3627 1.1 christos rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
3628 1.1 christos rela.r_addend = 0;
3629 1.1 christos }
3630 1.1 christos
3631 1.1 christos loc = htab->elf.srelgot->contents;
3632 1.1 christos loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
3633 1.1 christos bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3634 1.1 christos }
3635 1.1 christos
3636 1.1 christos if (h->needs_copy)
3637 1.1 christos {
3638 1.1 christos Elf_Internal_Rela rela;
3639 1.1 christos bfd_byte *loc;
3640 1.1 christos
3641 1.1 christos /* This symbols needs a copy reloc. Set it up. */
3642 1.1 christos
3643 1.1 christos if (h->dynindx == -1
3644 1.1 christos || (h->root.type != bfd_link_hash_defined
3645 1.1 christos && h->root.type != bfd_link_hash_defweak)
3646 1.1 christos || htab->srelbss == NULL)
3647 1.1 christos abort ();
3648 1.1 christos
3649 1.1 christos rela.r_offset = (h->root.u.def.value
3650 1.1 christos + h->root.u.def.section->output_section->vma
3651 1.1 christos + h->root.u.def.section->output_offset);
3652 1.1 christos rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3653 1.1 christos rela.r_addend = 0;
3654 1.1 christos loc = htab->srelbss->contents;
3655 1.1 christos loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
3656 1.1 christos bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3657 1.1 christos }
3658 1.1 christos
3659 1.1 christos /* Mark some specially defined symbols as absolute. */
3660 1.1 christos if (h == htab->elf.hdynamic
3661 1.1 christos || h == htab->elf.hgot
3662 1.1 christos || h == htab->elf.hplt)
3663 1.1 christos sym->st_shndx = SHN_ABS;
3664 1.1 christos
3665 1.1 christos return TRUE;
3666 1.1 christos }
3667 1.1 christos
3668 1.1 christos /* Used to decide how to sort relocs in an optimal manner for the
3669 1.1 christos dynamic linker, before writing them out. */
3670 1.1 christos
3671 1.1 christos static enum elf_reloc_type_class
3672 1.1 christos elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3673 1.1 christos const asection *rel_sec ATTRIBUTE_UNUSED,
3674 1.1 christos const Elf_Internal_Rela *rela)
3675 1.1 christos {
3676 1.6 christos bfd *abfd = info->output_bfd;
3677 1.6 christos const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3678 1.6 christos struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
3679 1.6 christos unsigned long r_symndx = ELF64_R_SYM (rela->r_info);
3680 1.6 christos Elf_Internal_Sym sym;
3681 1.6 christos
3682 1.6 christos if (htab->elf.dynsym == NULL
3683 1.6 christos || !bed->s->swap_symbol_in (abfd,
3684 1.6 christos (htab->elf.dynsym->contents
3685 1.6 christos + r_symndx * bed->s->sizeof_sym),
3686 1.6 christos 0, &sym))
3687 1.6 christos abort ();
3688 1.6 christos
3689 1.6 christos /* Check relocation against STT_GNU_IFUNC symbol. */
3690 1.6 christos if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
3691 1.6 christos return reloc_class_ifunc;
3692 1.6 christos
3693 1.1 christos switch ((int) ELF64_R_TYPE (rela->r_info))
3694 1.1 christos {
3695 1.1 christos case R_390_RELATIVE:
3696 1.1 christos return reloc_class_relative;
3697 1.1 christos case R_390_JMP_SLOT:
3698 1.1 christos return reloc_class_plt;
3699 1.1 christos case R_390_COPY:
3700 1.1 christos return reloc_class_copy;
3701 1.1 christos default:
3702 1.1 christos return reloc_class_normal;
3703 1.1 christos }
3704 1.1 christos }
3705 1.1 christos
3706 1.1 christos /* Finish up the dynamic sections. */
3707 1.1 christos
3708 1.1 christos static bfd_boolean
3709 1.1 christos elf_s390_finish_dynamic_sections (bfd *output_bfd,
3710 1.1 christos struct bfd_link_info *info)
3711 1.1 christos {
3712 1.1 christos struct elf_s390_link_hash_table *htab;
3713 1.1 christos bfd *dynobj;
3714 1.1 christos asection *sdyn;
3715 1.1 christos bfd *ibfd;
3716 1.1 christos unsigned int i;
3717 1.1 christos
3718 1.1 christos htab = elf_s390_hash_table (info);
3719 1.1 christos if (htab == NULL)
3720 1.1 christos return FALSE;
3721 1.1 christos
3722 1.1 christos dynobj = htab->elf.dynobj;
3723 1.1 christos sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3724 1.1 christos
3725 1.1 christos if (htab->elf.dynamic_sections_created)
3726 1.1 christos {
3727 1.1 christos Elf64_External_Dyn *dyncon, *dynconend;
3728 1.1 christos
3729 1.1 christos if (sdyn == NULL || htab->elf.sgot == NULL)
3730 1.1 christos abort ();
3731 1.1 christos
3732 1.1 christos dyncon = (Elf64_External_Dyn *) sdyn->contents;
3733 1.1 christos dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
3734 1.1 christos for (; dyncon < dynconend; dyncon++)
3735 1.1 christos {
3736 1.1 christos Elf_Internal_Dyn dyn;
3737 1.1 christos asection *s;
3738 1.1 christos
3739 1.1 christos bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
3740 1.1 christos
3741 1.1 christos switch (dyn.d_tag)
3742 1.1 christos {
3743 1.1 christos default:
3744 1.1 christos continue;
3745 1.1 christos
3746 1.1 christos case DT_PLTGOT:
3747 1.6 christos s = htab->elf.sgotplt;
3748 1.6 christos dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3749 1.1 christos break;
3750 1.1 christos
3751 1.1 christos case DT_JMPREL:
3752 1.6 christos s = htab->elf.srelplt;
3753 1.6 christos dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3754 1.1 christos break;
3755 1.1 christos
3756 1.1 christos case DT_PLTRELSZ:
3757 1.6 christos dyn.d_un.d_val = htab->elf.srelplt->size + htab->elf.irelplt->size;
3758 1.1 christos break;
3759 1.1 christos
3760 1.1 christos case DT_RELASZ:
3761 1.1 christos /* The procedure linkage table relocs (DT_JMPREL) should
3762 1.1 christos not be included in the overall relocs (DT_RELA).
3763 1.1 christos Therefore, we override the DT_RELASZ entry here to
3764 1.1 christos make it not include the JMPREL relocs. Since the
3765 1.1 christos linker script arranges for .rela.plt to follow all
3766 1.1 christos other relocation sections, we don't have to worry
3767 1.1 christos about changing the DT_RELA entry. */
3768 1.6 christos dyn.d_un.d_val -= htab->elf.srelplt->size + htab->elf.irelplt->size;
3769 1.1 christos break;
3770 1.1 christos }
3771 1.1 christos
3772 1.1 christos bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
3773 1.1 christos }
3774 1.1 christos
3775 1.1 christos /* Fill in the special first entry in the procedure linkage table. */
3776 1.1 christos if (htab->elf.splt && htab->elf.splt->size > 0)
3777 1.1 christos {
3778 1.1 christos /* fill in blueprint for plt 0 entry */
3779 1.1 christos memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
3780 1.1 christos PLT_FIRST_ENTRY_SIZE);
3781 1.1 christos /* Fixup relative address to start of GOT */
3782 1.1 christos bfd_put_32 (output_bfd,
3783 1.6 christos (htab->elf.sgotplt->output_section->vma
3784 1.6 christos + htab->elf.sgotplt->output_offset
3785 1.6 christos - htab->elf.splt->output_section->vma
3786 1.6 christos - htab->elf.splt->output_offset - 6)/2,
3787 1.1 christos htab->elf.splt->contents + 8);
3788 1.1 christos }
3789 1.1 christos if (elf_section_data (htab->elf.splt->output_section) != NULL)
3790 1.1 christos elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
3791 1.1 christos = PLT_ENTRY_SIZE;
3792 1.1 christos }
3793 1.1 christos
3794 1.1 christos if (htab->elf.sgotplt)
3795 1.1 christos {
3796 1.1 christos /* Fill in the first three entries in the global offset table. */
3797 1.1 christos if (htab->elf.sgotplt->size > 0)
3798 1.1 christos {
3799 1.1 christos bfd_put_64 (output_bfd,
3800 1.1 christos (sdyn == NULL ? (bfd_vma) 0
3801 1.1 christos : sdyn->output_section->vma + sdyn->output_offset),
3802 1.1 christos htab->elf.sgotplt->contents);
3803 1.1 christos /* One entry for shared object struct ptr. */
3804 1.1 christos bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
3805 1.1 christos /* One entry for _dl_runtime_resolve. */
3806 1.6 christos bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 16);
3807 1.1 christos }
3808 1.1 christos
3809 1.1 christos elf_section_data (htab->elf.sgot->output_section)
3810 1.1 christos ->this_hdr.sh_entsize = 8;
3811 1.1 christos }
3812 1.1 christos
3813 1.1 christos /* Finish dynamic symbol for local IFUNC symbols. */
3814 1.3 christos for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
3815 1.1 christos {
3816 1.1 christos struct plt_entry *local_plt;
3817 1.1 christos Elf_Internal_Sym *isym;
3818 1.1 christos Elf_Internal_Shdr *symtab_hdr;
3819 1.1 christos
3820 1.1 christos symtab_hdr = &elf_symtab_hdr (ibfd);
3821 1.1 christos
3822 1.1 christos local_plt = elf_s390_local_plt (ibfd);
3823 1.1 christos if (local_plt != NULL)
3824 1.1 christos for (i = 0; i < symtab_hdr->sh_info; i++)
3825 1.1 christos {
3826 1.1 christos if (local_plt[i].plt.offset != (bfd_vma) -1)
3827 1.1 christos {
3828 1.1 christos asection *sec = local_plt[i].sec;
3829 1.1 christos isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
3830 1.1 christos if (isym == NULL)
3831 1.1 christos return FALSE;
3832 1.1 christos
3833 1.1 christos if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3834 1.1 christos elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
3835 1.1 christos local_plt[i].plt.offset,
3836 1.1 christos isym->st_value
3837 1.1 christos + sec->output_section->vma
3838 1.1 christos + sec->output_offset);
3839 1.1 christos
3840 1.1 christos }
3841 1.1 christos }
3842 1.1 christos }
3843 1.1 christos
3844 1.1 christos return TRUE;
3845 1.1 christos }
3846 1.1 christos
3847 1.1 christos /* Return address for Ith PLT stub in section PLT, for relocation REL
3848 1.1 christos or (bfd_vma) -1 if it should not be included. */
3849 1.1 christos
3850 1.1 christos static bfd_vma
3851 1.1 christos elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3852 1.1 christos const arelent *rel ATTRIBUTE_UNUSED)
3853 1.1 christos {
3854 1.1 christos return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3855 1.1 christos }
3856 1.1 christos
3857 1.5 christos /* Merge backend specific data from an object file to the output
3858 1.5 christos object file when linking. */
3859 1.5 christos
3860 1.5 christos static bfd_boolean
3861 1.5 christos elf64_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3862 1.5 christos {
3863 1.5 christos if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
3864 1.5 christos return TRUE;
3865 1.5 christos
3866 1.5 christos if (!elf_s390_merge_obj_attributes (ibfd, obfd))
3867 1.5 christos return FALSE;
3868 1.5 christos
3869 1.5 christos return TRUE;
3870 1.5 christos }
3871 1.5 christos
3872 1.1 christos /* Why was the hash table entry size definition changed from
3873 1.1 christos ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3874 1.1 christos this is the only reason for the s390_elf64_size_info structure. */
3875 1.1 christos
3876 1.1 christos const struct elf_size_info s390_elf64_size_info =
3877 1.1 christos {
3878 1.1 christos sizeof (Elf64_External_Ehdr),
3879 1.1 christos sizeof (Elf64_External_Phdr),
3880 1.1 christos sizeof (Elf64_External_Shdr),
3881 1.1 christos sizeof (Elf64_External_Rel),
3882 1.1 christos sizeof (Elf64_External_Rela),
3883 1.1 christos sizeof (Elf64_External_Sym),
3884 1.1 christos sizeof (Elf64_External_Dyn),
3885 1.1 christos sizeof (Elf_External_Note),
3886 1.1 christos 8, /* hash-table entry size. */
3887 1.1 christos 1, /* internal relocations per external relocations. */
3888 1.1 christos 64, /* arch_size. */
3889 1.1 christos 3, /* log_file_align. */
3890 1.1 christos ELFCLASS64, EV_CURRENT,
3891 1.1 christos bfd_elf64_write_out_phdrs,
3892 1.1 christos bfd_elf64_write_shdrs_and_ehdr,
3893 1.1 christos bfd_elf64_checksum_contents,
3894 1.1 christos bfd_elf64_write_relocs,
3895 1.1 christos bfd_elf64_swap_symbol_in,
3896 1.1 christos bfd_elf64_swap_symbol_out,
3897 1.1 christos bfd_elf64_slurp_reloc_table,
3898 1.1 christos bfd_elf64_slurp_symbol_table,
3899 1.1 christos bfd_elf64_swap_dyn_in,
3900 1.1 christos bfd_elf64_swap_dyn_out,
3901 1.1 christos bfd_elf64_swap_reloc_in,
3902 1.1 christos bfd_elf64_swap_reloc_out,
3903 1.1 christos bfd_elf64_swap_reloca_in,
3904 1.1 christos bfd_elf64_swap_reloca_out
3905 1.1 christos };
3906 1.1 christos
3907 1.3 christos #define TARGET_BIG_SYM s390_elf64_vec
3908 1.1 christos #define TARGET_BIG_NAME "elf64-s390"
3909 1.1 christos #define ELF_ARCH bfd_arch_s390
3910 1.1 christos #define ELF_TARGET_ID S390_ELF_DATA
3911 1.1 christos #define ELF_MACHINE_CODE EM_S390
3912 1.1 christos #define ELF_MACHINE_ALT1 EM_S390_OLD
3913 1.1 christos #define ELF_MAXPAGESIZE 0x1000
3914 1.1 christos
3915 1.1 christos #define elf_backend_size_info s390_elf64_size_info
3916 1.1 christos
3917 1.1 christos #define elf_backend_can_gc_sections 1
3918 1.1 christos #define elf_backend_can_refcount 1
3919 1.1 christos #define elf_backend_want_got_plt 1
3920 1.1 christos #define elf_backend_plt_readonly 1
3921 1.1 christos #define elf_backend_want_plt_sym 0
3922 1.1 christos #define elf_backend_got_header_size 24
3923 1.1 christos #define elf_backend_rela_normal 1
3924 1.1 christos
3925 1.1 christos #define elf_info_to_howto elf_s390_info_to_howto
3926 1.1 christos
3927 1.1 christos #define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
3928 1.1 christos #define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
3929 1.1 christos #define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
3930 1.5 christos #define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
3931 1.5 christos #define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
3932 1.1 christos
3933 1.1 christos #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
3934 1.1 christos #define elf_backend_check_relocs elf_s390_check_relocs
3935 1.1 christos #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
3936 1.1 christos #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
3937 1.1 christos #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
3938 1.1 christos #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
3939 1.1 christos #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
3940 1.1 christos #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
3941 1.1 christos #define elf_backend_reloc_type_class elf_s390_reloc_type_class
3942 1.1 christos #define elf_backend_relocate_section elf_s390_relocate_section
3943 1.1 christos #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
3944 1.1 christos #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3945 1.1 christos #define elf_backend_plt_sym_val elf_s390_plt_sym_val
3946 1.1 christos #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
3947 1.5 christos #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
3948 1.1 christos
3949 1.1 christos #define bfd_elf64_mkobject elf_s390_mkobject
3950 1.1 christos #define elf_backend_object_p elf_s390_object_p
3951 1.1 christos
3952 1.1 christos #include "elf64-target.h"
3953