Commit | Line | Data |
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a85d7ed0 | 1 | /* IBM S/390-specific support for 32-bit ELF |
2571583a | 2 | Copyright (C) 2000-2017 Free Software Foundation, Inc. |
a85d7ed0 NC |
3 | Contributed by Carl B. Pedersen and Martin Schwidefsky. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
a85d7ed0 NC |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
3e110533 | 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
53e09e0a | 20 | 02110-1301, USA. */ |
a85d7ed0 | 21 | |
a85d7ed0 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
a85d7ed0 NC |
24 | #include "bfdlink.h" |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
a85d7ed0 | 27 | #include "elf/s390.h" |
e3e9290d | 28 | #include <stdarg.h> |
a85d7ed0 | 29 | |
2c3fc389 NC |
30 | static bfd_reloc_status_type |
31 | s390_tls_reloc (bfd *, arelent *, asymbol *, void *, | |
32 | asection *, bfd *, char **); | |
33 | static bfd_reloc_status_type | |
34 | s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *, | |
35 | asection *, bfd *, char **); | |
36 | ||
a85d7ed0 NC |
37 | /* The relocation "howto" table. */ |
38 | ||
39 | static reloc_howto_type elf_howto_table[] = | |
40 | { | |
41 | HOWTO (R_390_NONE, /* type */ | |
42 | 0, /* rightshift */ | |
6346d5ca | 43 | 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */ |
a85d7ed0 | 44 | 0, /* bitsize */ |
b34976b6 | 45 | FALSE, /* pc_relative */ |
a85d7ed0 NC |
46 | 0, /* bitpos */ |
47 | complain_overflow_dont, /* complain_on_overflow */ | |
48 | bfd_elf_generic_reloc, /* special_function */ | |
49 | "R_390_NONE", /* name */ | |
b34976b6 | 50 | FALSE, /* partial_inplace */ |
a85d7ed0 NC |
51 | 0, /* src_mask */ |
52 | 0, /* dst_mask */ | |
b34976b6 AM |
53 | FALSE), /* pcrel_offset */ |
54 | ||
07d6d2b8 AM |
55 | HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, |
56 | bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE), | |
57 | HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
58 | bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE), | |
59 | HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
60 | bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE), | |
61 | HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
62 | bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE), | |
5236c819 | 63 | HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, |
07d6d2b8 | 64 | bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE), |
15f8604d | 65 | HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield, |
07d6d2b8 | 66 | bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE), |
5236c819 | 67 | HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
07d6d2b8 | 68 | bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE), |
5236c819 | 69 | HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, |
07d6d2b8 AM |
70 | bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE), |
71 | HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
72 | bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE), | |
73 | HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
5236c819 | 74 | bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE), |
07d6d2b8 | 75 | HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
5236c819 | 76 | bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE), |
07d6d2b8 | 77 | HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, |
5236c819 | 78 | bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE), |
07d6d2b8 | 79 | HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
5236c819 | 80 | bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE), |
07d6d2b8 AM |
81 | HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, |
82 | bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE), | |
83 | HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
84 | bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE), | |
85 | HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
86 | bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE), | |
87 | HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
88 | bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE), | |
89 | HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
5236c819 MS |
90 | bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE), |
91 | HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
07d6d2b8 | 92 | bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE), |
5236c819 MS |
93 | HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, |
94 | bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE), | |
07d6d2b8 | 95 | HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, |
5236c819 MS |
96 | bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE), |
97 | EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */ | |
98 | EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */ | |
99 | EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */ | |
100 | EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */ | |
101 | HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
07d6d2b8 AM |
102 | bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE), |
103 | HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
5236c819 MS |
104 | bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE), |
105 | EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */ | |
07d6d2b8 | 106 | HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont, |
5236c819 | 107 | bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE), |
07d6d2b8 | 108 | HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, |
5236c819 | 109 | bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE), |
07d6d2b8 | 110 | HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
5236c819 MS |
111 | bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE), |
112 | EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */ | |
113 | HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
114 | bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE), | |
07d6d2b8 | 115 | HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, |
5236c819 | 116 | bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE), |
07d6d2b8 | 117 | HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
5236c819 MS |
118 | bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE), |
119 | EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */ | |
69fc87f1 MS |
120 | HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont, |
121 | s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE), | |
122 | HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
123 | s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE), | |
124 | HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
125 | s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE), | |
126 | HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
127 | bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE), | |
128 | EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */ | |
129 | HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
130 | bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE), | |
131 | HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
132 | bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE), | |
133 | EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */ | |
134 | HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
135 | bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE), | |
136 | EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */ | |
137 | HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
138 | bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE), | |
139 | EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */ | |
140 | HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
141 | bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE), | |
142 | HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
143 | bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE), | |
144 | EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */ | |
145 | HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
146 | bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE), | |
147 | EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */ | |
148 | HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
149 | bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE), | |
150 | HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
151 | bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE), | |
152 | HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
153 | bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE), | |
07d6d2b8 | 154 | HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont, |
bd1ea41b MS |
155 | s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE), |
156 | HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont, | |
157 | s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE), | |
07d6d2b8 | 158 | HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont, |
bd1ea41b MS |
159 | s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE), |
160 | HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont, | |
161 | s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE), | |
470b557a AK |
162 | HOWTO(R_390_IRELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, |
163 | bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, 0xffffffff, FALSE), | |
07d6d2b8 AM |
164 | HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield, |
165 | bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE), | |
fb798c50 AK |
166 | HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield, |
167 | bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE), | |
07d6d2b8 AM |
168 | HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield, |
169 | bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE), | |
fb798c50 AK |
170 | HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield, |
171 | bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE), | |
a85d7ed0 NC |
172 | }; |
173 | ||
174 | /* GNU extension to record C++ vtable hierarchy. */ | |
175 | static reloc_howto_type elf32_s390_vtinherit_howto = | |
b34976b6 | 176 | HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE); |
a85d7ed0 | 177 | static reloc_howto_type elf32_s390_vtentry_howto = |
b34976b6 | 178 | HOWTO (R_390_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE); |
a85d7ed0 NC |
179 | |
180 | static reloc_howto_type * | |
2c3fc389 NC |
181 | elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
182 | bfd_reloc_code_real_type code) | |
a85d7ed0 | 183 | { |
ec338859 | 184 | switch (code) |
0451c93c MS |
185 | { |
186 | case BFD_RELOC_NONE: | |
187 | return &elf_howto_table[(int) R_390_NONE]; | |
188 | case BFD_RELOC_8: | |
189 | return &elf_howto_table[(int) R_390_8]; | |
190 | case BFD_RELOC_390_12: | |
191 | return &elf_howto_table[(int) R_390_12]; | |
192 | case BFD_RELOC_16: | |
193 | return &elf_howto_table[(int) R_390_16]; | |
194 | case BFD_RELOC_32: | |
195 | return &elf_howto_table[(int) R_390_32]; | |
196 | case BFD_RELOC_CTOR: | |
197 | return &elf_howto_table[(int) R_390_32]; | |
198 | case BFD_RELOC_32_PCREL: | |
199 | return &elf_howto_table[(int) R_390_PC32]; | |
200 | case BFD_RELOC_390_GOT12: | |
201 | return &elf_howto_table[(int) R_390_GOT12]; | |
202 | case BFD_RELOC_32_GOT_PCREL: | |
203 | return &elf_howto_table[(int) R_390_GOT32]; | |
204 | case BFD_RELOC_390_PLT32: | |
205 | return &elf_howto_table[(int) R_390_PLT32]; | |
206 | case BFD_RELOC_390_COPY: | |
207 | return &elf_howto_table[(int) R_390_COPY]; | |
208 | case BFD_RELOC_390_GLOB_DAT: | |
209 | return &elf_howto_table[(int) R_390_GLOB_DAT]; | |
210 | case BFD_RELOC_390_JMP_SLOT: | |
211 | return &elf_howto_table[(int) R_390_JMP_SLOT]; | |
212 | case BFD_RELOC_390_RELATIVE: | |
213 | return &elf_howto_table[(int) R_390_RELATIVE]; | |
214 | case BFD_RELOC_32_GOTOFF: | |
5236c819 | 215 | return &elf_howto_table[(int) R_390_GOTOFF32]; |
0451c93c MS |
216 | case BFD_RELOC_390_GOTPC: |
217 | return &elf_howto_table[(int) R_390_GOTPC]; | |
218 | case BFD_RELOC_390_GOT16: | |
219 | return &elf_howto_table[(int) R_390_GOT16]; | |
220 | case BFD_RELOC_16_PCREL: | |
221 | return &elf_howto_table[(int) R_390_PC16]; | |
fb798c50 AK |
222 | case BFD_RELOC_390_PC12DBL: |
223 | return &elf_howto_table[(int) R_390_PC12DBL]; | |
224 | case BFD_RELOC_390_PLT12DBL: | |
225 | return &elf_howto_table[(int) R_390_PLT12DBL]; | |
0451c93c MS |
226 | case BFD_RELOC_390_PC16DBL: |
227 | return &elf_howto_table[(int) R_390_PC16DBL]; | |
228 | case BFD_RELOC_390_PLT16DBL: | |
229 | return &elf_howto_table[(int) R_390_PLT16DBL]; | |
fb798c50 AK |
230 | case BFD_RELOC_390_PC24DBL: |
231 | return &elf_howto_table[(int) R_390_PC24DBL]; | |
232 | case BFD_RELOC_390_PLT24DBL: | |
233 | return &elf_howto_table[(int) R_390_PLT24DBL]; | |
befc3abb MS |
234 | case BFD_RELOC_390_PC32DBL: |
235 | return &elf_howto_table[(int) R_390_PC32DBL]; | |
236 | case BFD_RELOC_390_PLT32DBL: | |
237 | return &elf_howto_table[(int) R_390_PLT32DBL]; | |
238 | case BFD_RELOC_390_GOTPCDBL: | |
239 | return &elf_howto_table[(int) R_390_GOTPCDBL]; | |
240 | case BFD_RELOC_390_GOTENT: | |
241 | return &elf_howto_table[(int) R_390_GOTENT]; | |
5236c819 MS |
242 | case BFD_RELOC_16_GOTOFF: |
243 | return &elf_howto_table[(int) R_390_GOTOFF16]; | |
244 | case BFD_RELOC_390_GOTPLT12: | |
245 | return &elf_howto_table[(int) R_390_GOTPLT12]; | |
246 | case BFD_RELOC_390_GOTPLT16: | |
247 | return &elf_howto_table[(int) R_390_GOTPLT16]; | |
248 | case BFD_RELOC_390_GOTPLT32: | |
249 | return &elf_howto_table[(int) R_390_GOTPLT32]; | |
250 | case BFD_RELOC_390_GOTPLTENT: | |
251 | return &elf_howto_table[(int) R_390_GOTPLTENT]; | |
252 | case BFD_RELOC_390_PLTOFF16: | |
253 | return &elf_howto_table[(int) R_390_PLTOFF16]; | |
254 | case BFD_RELOC_390_PLTOFF32: | |
255 | return &elf_howto_table[(int) R_390_PLTOFF32]; | |
69fc87f1 MS |
256 | case BFD_RELOC_390_TLS_LOAD: |
257 | return &elf_howto_table[(int) R_390_TLS_LOAD]; | |
258 | case BFD_RELOC_390_TLS_GDCALL: | |
259 | return &elf_howto_table[(int) R_390_TLS_GDCALL]; | |
260 | case BFD_RELOC_390_TLS_LDCALL: | |
261 | return &elf_howto_table[(int) R_390_TLS_LDCALL]; | |
262 | case BFD_RELOC_390_TLS_GD32: | |
263 | return &elf_howto_table[(int) R_390_TLS_GD32]; | |
264 | case BFD_RELOC_390_TLS_GOTIE12: | |
265 | return &elf_howto_table[(int) R_390_TLS_GOTIE12]; | |
266 | case BFD_RELOC_390_TLS_GOTIE32: | |
267 | return &elf_howto_table[(int) R_390_TLS_GOTIE32]; | |
268 | case BFD_RELOC_390_TLS_LDM32: | |
269 | return &elf_howto_table[(int) R_390_TLS_LDM32]; | |
270 | case BFD_RELOC_390_TLS_IE32: | |
271 | return &elf_howto_table[(int) R_390_TLS_IE32]; | |
272 | case BFD_RELOC_390_TLS_IEENT: | |
273 | return &elf_howto_table[(int) R_390_TLS_IEENT]; | |
274 | case BFD_RELOC_390_TLS_LE32: | |
275 | return &elf_howto_table[(int) R_390_TLS_LE32]; | |
276 | case BFD_RELOC_390_TLS_LDO32: | |
277 | return &elf_howto_table[(int) R_390_TLS_LDO32]; | |
278 | case BFD_RELOC_390_TLS_DTPMOD: | |
279 | return &elf_howto_table[(int) R_390_TLS_DTPMOD]; | |
280 | case BFD_RELOC_390_TLS_DTPOFF: | |
281 | return &elf_howto_table[(int) R_390_TLS_DTPOFF]; | |
282 | case BFD_RELOC_390_TLS_TPOFF: | |
283 | return &elf_howto_table[(int) R_390_TLS_TPOFF]; | |
bd1ea41b MS |
284 | case BFD_RELOC_390_20: |
285 | return &elf_howto_table[(int) R_390_20]; | |
286 | case BFD_RELOC_390_GOT20: | |
287 | return &elf_howto_table[(int) R_390_GOT20]; | |
288 | case BFD_RELOC_390_GOTPLT20: | |
289 | return &elf_howto_table[(int) R_390_GOTPLT20]; | |
290 | case BFD_RELOC_390_TLS_GOTIE20: | |
291 | return &elf_howto_table[(int) R_390_TLS_GOTIE20]; | |
470b557a AK |
292 | case BFD_RELOC_390_IRELATIVE: |
293 | return &elf_howto_table[(int) R_390_IRELATIVE]; | |
0451c93c MS |
294 | case BFD_RELOC_VTABLE_INHERIT: |
295 | return &elf32_s390_vtinherit_howto; | |
296 | case BFD_RELOC_VTABLE_ENTRY: | |
297 | return &elf32_s390_vtentry_howto; | |
298 | default: | |
299 | break; | |
300 | } | |
a85d7ed0 NC |
301 | return 0; |
302 | } | |
303 | ||
157090f7 AM |
304 | static reloc_howto_type * |
305 | elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
306 | const char *r_name) | |
307 | { | |
308 | unsigned int i; | |
309 | ||
310 | for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++) | |
311 | if (elf_howto_table[i].name != NULL | |
312 | && strcasecmp (elf_howto_table[i].name, r_name) == 0) | |
313 | return &elf_howto_table[i]; | |
314 | ||
315 | if (strcasecmp (elf32_s390_vtinherit_howto.name, r_name) == 0) | |
316 | return &elf32_s390_vtinherit_howto; | |
317 | if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0) | |
318 | return &elf32_s390_vtentry_howto; | |
319 | ||
320 | return NULL; | |
321 | } | |
322 | ||
a85d7ed0 NC |
323 | /* We need to use ELF32_R_TYPE so we have our own copy of this function, |
324 | and elf32-s390.c has its own copy. */ | |
325 | ||
326 | static void | |
2c3fc389 NC |
327 | elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
328 | arelent *cache_ptr, | |
329 | Elf_Internal_Rela *dst) | |
a85d7ed0 | 330 | { |
d0fb9a8d JJ |
331 | unsigned int r_type = ELF32_R_TYPE(dst->r_info); |
332 | switch (r_type) | |
a85d7ed0 NC |
333 | { |
334 | case R_390_GNU_VTINHERIT: | |
335 | cache_ptr->howto = &elf32_s390_vtinherit_howto; | |
336 | break; | |
337 | ||
338 | case R_390_GNU_VTENTRY: | |
339 | cache_ptr->howto = &elf32_s390_vtentry_howto; | |
340 | break; | |
341 | ||
342 | default: | |
d0fb9a8d JJ |
343 | if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0])) |
344 | { | |
695344c0 | 345 | /* xgettext:c-format */ |
4eca0228 AM |
346 | _bfd_error_handler (_("%B: invalid relocation type %d"), |
347 | abfd, (int) r_type); | |
d0fb9a8d JJ |
348 | r_type = R_390_NONE; |
349 | } | |
350 | cache_ptr->howto = &elf_howto_table[r_type]; | |
dc810e39 | 351 | } |
a85d7ed0 NC |
352 | } |
353 | ||
69fc87f1 MS |
354 | /* A relocation function which doesn't do anything. */ |
355 | static bfd_reloc_status_type | |
2c3fc389 NC |
356 | s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
357 | arelent *reloc_entry, | |
358 | asymbol *symbol ATTRIBUTE_UNUSED, | |
359 | void * data ATTRIBUTE_UNUSED, | |
360 | asection *input_section, | |
361 | bfd *output_bfd, | |
362 | char **error_message ATTRIBUTE_UNUSED) | |
69fc87f1 MS |
363 | { |
364 | if (output_bfd) | |
365 | reloc_entry->address += input_section->output_offset; | |
366 | return bfd_reloc_ok; | |
367 | } | |
368 | ||
bd1ea41b MS |
369 | /* Handle the large displacement relocs. */ |
370 | static bfd_reloc_status_type | |
2c3fc389 NC |
371 | s390_elf_ldisp_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
372 | arelent *reloc_entry, | |
373 | asymbol *symbol, | |
374 | void * data ATTRIBUTE_UNUSED, | |
375 | asection *input_section, | |
376 | bfd *output_bfd, | |
377 | char **error_message ATTRIBUTE_UNUSED) | |
bd1ea41b MS |
378 | { |
379 | reloc_howto_type *howto = reloc_entry->howto; | |
380 | bfd_vma relocation; | |
381 | bfd_vma insn; | |
68ffbac6 | 382 | |
bd1ea41b MS |
383 | if (output_bfd != (bfd *) NULL |
384 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
385 | && (! howto->partial_inplace | |
386 | || reloc_entry->addend == 0)) | |
387 | { | |
388 | reloc_entry->address += input_section->output_offset; | |
389 | return bfd_reloc_ok; | |
390 | } | |
68ffbac6 | 391 | |
bd1ea41b MS |
392 | if (output_bfd != NULL) |
393 | return bfd_reloc_continue; | |
68ffbac6 | 394 | |
07515404 | 395 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
bd1ea41b | 396 | return bfd_reloc_outofrange; |
68ffbac6 | 397 | |
bd1ea41b MS |
398 | relocation = (symbol->value |
399 | + symbol->section->output_section->vma | |
400 | + symbol->section->output_offset); | |
401 | relocation += reloc_entry->addend; | |
402 | if (howto->pc_relative) | |
403 | { | |
404 | relocation -= (input_section->output_section->vma | |
405 | + input_section->output_offset); | |
406 | relocation -= reloc_entry->address; | |
407 | } | |
68ffbac6 | 408 | |
bd1ea41b MS |
409 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
410 | insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4; | |
411 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
68ffbac6 | 412 | |
bd1ea41b MS |
413 | if ((bfd_signed_vma) relocation < - 0x80000 |
414 | || (bfd_signed_vma) relocation > 0x7ffff) | |
415 | return bfd_reloc_overflow; | |
416 | else | |
417 | return bfd_reloc_ok; | |
418 | } | |
419 | ||
b34976b6 | 420 | static bfd_boolean |
2c3fc389 | 421 | elf_s390_is_local_label_name (bfd *abfd, const char *name) |
a85d7ed0 NC |
422 | { |
423 | if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L')) | |
b34976b6 | 424 | return TRUE; |
a85d7ed0 NC |
425 | |
426 | return _bfd_elf_is_local_label_name (abfd, name); | |
427 | } | |
428 | ||
429 | /* Functions for the 390 ELF linker. */ | |
430 | ||
431 | /* The name of the dynamic interpreter. This is put in the .interp | |
432 | section. */ | |
433 | ||
87049b0d | 434 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" |
a85d7ed0 | 435 | |
64285810 MS |
436 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
437 | copying dynamic variables from a shared lib into an app's dynbss | |
438 | section, and instead use a dynamic relocation to point into the | |
439 | shared lib. */ | |
440 | #define ELIMINATE_COPY_RELOCS 1 | |
441 | ||
a85d7ed0 NC |
442 | /* The size in bytes of the first entry in the procedure linkage table. */ |
443 | #define PLT_FIRST_ENTRY_SIZE 32 | |
444 | /* The size in bytes of an entry in the procedure linkage table. */ | |
dc810e39 | 445 | #define PLT_ENTRY_SIZE 32 |
a85d7ed0 NC |
446 | |
447 | #define GOT_ENTRY_SIZE 4 | |
448 | ||
470b557a AK |
449 | #define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela) |
450 | ||
a85d7ed0 NC |
451 | /* The first three entries in a procedure linkage table are reserved, |
452 | and the initial contents are unimportant (we zero them out). | |
453 | Subsequent entries look like this. See the SVR4 ABI 386 | |
454 | supplement to see how this works. */ | |
455 | ||
456 | /* For the s390, simple addr offset can only be 0 - 4096. | |
457 | To use the full 2 GB address space, several instructions | |
458 | are needed to load an address in a register and execute | |
459 | a branch( or just saving the address) | |
460 | ||
dc810e39 | 461 | Furthermore, only r 0 and 1 are free to use!!! */ |
a85d7ed0 NC |
462 | |
463 | /* The first 3 words in the GOT are then reserved. | |
464 | Word 0 is the address of the dynamic table. | |
465 | Word 1 is a pointer to a structure describing the object | |
466 | Word 2 is used to point to the loader entry address. | |
467 | ||
4cc11e76 | 468 | The code for position independent PLT entries looks like this: |
a85d7ed0 NC |
469 | |
470 | r12 holds addr of the current GOT at entry to the PLT | |
471 | ||
472 | The GOT holds the address in the PLT to be executed. | |
473 | The loader then gets: | |
474 | 24(15) = Pointer to the structure describing the object. | |
a7e28bbe | 475 | 28(15) = Offset into rela.plt |
a85d7ed0 NC |
476 | |
477 | The loader must then find the module where the function is | |
478 | and insert the address in the GOT. | |
479 | ||
480 | Note: 390 can only address +- 64 K relative. | |
07d6d2b8 AM |
481 | We check if offset > 65536, then make a relative branch -64xxx |
482 | back to a previous defined branch | |
483 | ||
484 | PLT1: BASR 1,0 # 2 bytes | |
485 | L 1,22(1) # 4 bytes Load offset in GOT in r 1 | |
486 | L 1,(1,12) # 4 bytes Load address from GOT in r1 | |
487 | BCR 15,1 # 2 bytes Jump to address | |
488 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
489 | L 1,14(1) # 4 bytes Load offset in symol table in r1 | |
a85d7ed0 | 490 | BRC 15,-x # 4 bytes Jump to start of PLT |
07d6d2b8 AM |
491 | .word 0 # 2 bytes filler |
492 | .long ? # 4 bytes offset in GOT | |
493 | .long ? # 4 bytes offset into rela.plt | |
a85d7ed0 NC |
494 | |
495 | This was the general case. There are two additional, optimizes PLT | |
496 | definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768. | |
497 | First the one for GOT offsets < 4096: | |
498 | ||
07d6d2b8 AM |
499 | PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1 |
500 | BCR 15,1 # 2 bytes Jump to address | |
501 | .word 0,0,0 # 6 bytes filler | |
502 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
503 | L 1,14(1) # 4 bytes Load offset in rela.plt in r1 | |
504 | BRC 15,-x # 4 bytes Jump to start of PLT | |
505 | .word 0,0,0 # 6 bytes filler | |
506 | .long ? # 4 bytes offset into rela.plt | |
a85d7ed0 NC |
507 | |
508 | Second the one for GOT offsets < 32768: | |
509 | ||
07d6d2b8 AM |
510 | PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1 |
511 | L 1,(1,12) # 4 bytes Load address from GOT to r1 | |
512 | BCR 15,1 # 2 bytes Jump to address | |
513 | .word 0 # 2 bytes filler | |
514 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
515 | L 1,14(1) # 4 bytes Load offset in rela.plt in r1 | |
516 | BRC 15,-x # 4 bytes Jump to start of PLT | |
517 | .word 0,0,0 # 6 bytes filler | |
518 | .long ? # 4 bytes offset into rela.plt | |
a85d7ed0 NC |
519 | |
520 | Total = 32 bytes per PLT entry | |
521 | ||
522 | The code for static build PLT entries looks like this: | |
523 | ||
07d6d2b8 AM |
524 | PLT1: BASR 1,0 # 2 bytes |
525 | L 1,22(1) # 4 bytes Load address of GOT entry | |
526 | L 1,0(0,1) # 4 bytes Load address from GOT in r1 | |
527 | BCR 15,1 # 2 bytes Jump to address | |
528 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
529 | L 1,14(1) # 4 bytes Load offset in symbol table in r1 | |
a85d7ed0 | 530 | BRC 15,-x # 4 bytes Jump to start of PLT |
07d6d2b8 AM |
531 | .word 0 # 2 bytes filler |
532 | .long ? # 4 bytes address of GOT entry | |
533 | .long ? # 4 bytes offset into rela.plt */ | |
a85d7ed0 | 534 | |
9aa17453 AK |
535 | static const bfd_byte elf_s390_plt_entry[PLT_ENTRY_SIZE] = |
536 | { | |
07d6d2b8 AM |
537 | 0x0d, 0x10, /* basr %r1,%r0 */ |
538 | 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */ | |
539 | 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */ | |
540 | 0x07, 0xf1, /* br %r1 */ | |
541 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
542 | 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */ | |
543 | 0xa7, 0xf4, 0x00, 0x00, /* j first plt */ | |
544 | 0x00, 0x00, /* padding */ | |
545 | 0x00, 0x00, 0x00, 0x00, /* GOT offset */ | |
546 | 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */ | |
9aa17453 AK |
547 | }; |
548 | ||
549 | /* Generic PLT pic entry. */ | |
550 | static const bfd_byte elf_s390_plt_pic_entry[PLT_ENTRY_SIZE] = | |
551 | { | |
07d6d2b8 AM |
552 | 0x0d, 0x10, /* basr %r1,%r0 */ |
553 | 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */ | |
554 | 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */ | |
555 | 0x07, 0xf1, /* br %r1 */ | |
556 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
557 | 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */ | |
558 | 0xa7, 0xf4, 0x00, 0x00, /* j first plt */ | |
559 | 0x00, 0x00, /* padding */ | |
560 | 0x00, 0x00, 0x00, 0x00, /* GOT offset */ | |
561 | 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */ | |
9aa17453 AK |
562 | }; |
563 | ||
564 | /* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced | |
565 | when generating the PLT slot with the GOT offset. */ | |
566 | static const bfd_byte elf_s390_plt_pic12_entry[PLT_ENTRY_SIZE] = | |
567 | { | |
07d6d2b8 AM |
568 | 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */ |
569 | 0x07, 0xf1, /* br %r1 */ | |
570 | 0x00, 0x00, 0x00, 0x00, /* padding */ | |
9aa17453 | 571 | 0x00, 0x00, |
07d6d2b8 AM |
572 | 0x0d, 0x10, /* basr %r1,%r0 */ |
573 | 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */ | |
574 | 0xa7, 0xf4, 0x00, 0x00, /* j first plt */ | |
9aa17453 AK |
575 | 0x00, 0x00, 0x00, 0x00, |
576 | 0x00, 0x00, 0x00, 0x00 | |
577 | }; | |
578 | ||
579 | /* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced | |
580 | when generating the PLT slot with the GOT offset. */ | |
581 | static const bfd_byte elf_s390_plt_pic16_entry[PLT_ENTRY_SIZE] = | |
582 | { | |
07d6d2b8 AM |
583 | 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */ |
584 | 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */ | |
585 | 0x07, 0xf1, /* br %r1 */ | |
9aa17453 | 586 | 0x00, 0x00, |
07d6d2b8 AM |
587 | 0x0d, 0x10, /* basr %r1,%r0 */ |
588 | 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */ | |
589 | 0xa7, 0xf4, 0x00, 0x00, /* j first plt */ | |
9aa17453 AK |
590 | 0x00, 0x00, 0x00, 0x00, |
591 | 0x00, 0x00, 0x00, 0x00, | |
592 | 0x00, 0x00 | |
593 | }; | |
a85d7ed0 | 594 | |
a7e28bbe | 595 | /* The first PLT entry pushes the offset into the rela.plt |
a85d7ed0 NC |
596 | from R1 onto the stack at 8(15) and the loader object info |
597 | at 12(15), loads the loader address in R1 and jumps to it. */ | |
598 | ||
599 | /* The first entry in the PLT for PIC code: | |
600 | ||
601 | PLT0: | |
07d6d2b8 AM |
602 | ST 1,28(15) # R1 has offset into rela.plt |
603 | L 1,4(12) # Get loader ino(object struct address) | |
604 | ST 1,24(15) # Store address | |
605 | L 1,8(12) # Entry address of loader in R1 | |
606 | BR 1 # Jump to loader | |
a85d7ed0 NC |
607 | |
608 | The first entry in the PLT for static code: | |
609 | ||
610 | PLT0: | |
07d6d2b8 | 611 | ST 1,28(15) # R1 has offset into rela.plt |
a85d7ed0 | 612 | BASR 1,0 |
07d6d2b8 AM |
613 | L 1,18(0,1) # Get address of GOT |
614 | MVC 24(4,15),4(1) # Move loader ino to stack | |
615 | L 1,8(1) # Get address of loader | |
616 | BR 1 # Jump to loader | |
617 | .word 0 # filler | |
618 | .long got # address of GOT */ | |
a85d7ed0 | 619 | |
9aa17453 AK |
620 | static const bfd_byte elf_s390_plt_first_entry[PLT_FIRST_ENTRY_SIZE] = |
621 | { | |
07d6d2b8 AM |
622 | 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */ |
623 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
624 | 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */ | |
625 | 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */ | |
626 | 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */ | |
627 | 0x07, 0xf1, /* br %r1 */ | |
9aa17453 AK |
628 | 0x00, 0x00, 0x00, 0x00, |
629 | 0x00, 0x00, 0x00, 0x00, | |
630 | 0x00, 0x00 | |
631 | }; | |
632 | ||
633 | static const bfd_byte elf_s390_plt_pic_first_entry[PLT_FIRST_ENTRY_SIZE] = | |
634 | { | |
07d6d2b8 AM |
635 | 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */ |
636 | 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */ | |
637 | 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */ | |
638 | 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */ | |
639 | 0x07, 0xf1, /* br %r1 */ | |
9aa17453 AK |
640 | 0x00, 0x00, 0x00, 0x00, |
641 | 0x00, 0x00, 0x00, 0x00, | |
642 | 0x00, 0x00, 0x00, 0x00, | |
643 | 0x00, 0x00 | |
644 | }; | |
a85d7ed0 | 645 | |
a85d7ed0 NC |
646 | |
647 | /* s390 ELF linker hash entry. */ | |
648 | ||
649 | struct elf_s390_link_hash_entry | |
650 | { | |
0451c93c | 651 | struct elf_link_hash_entry elf; |
a85d7ed0 | 652 | |
0451c93c | 653 | /* Track dynamic relocs copied for this symbol. */ |
00d8c7a9 | 654 | struct elf_dyn_relocs *dyn_relocs; |
5236c819 MS |
655 | |
656 | /* Number of GOTPLT references for a function. */ | |
657 | bfd_signed_vma gotplt_refcount; | |
69fc87f1 MS |
658 | |
659 | #define GOT_UNKNOWN 0 | |
660 | #define GOT_NORMAL 1 | |
661 | #define GOT_TLS_GD 2 | |
662 | #define GOT_TLS_IE 3 | |
663 | #define GOT_TLS_IE_NLT 4 | |
664 | unsigned char tls_type; | |
470b557a AK |
665 | |
666 | /* For pointer equality reasons we might need to change the symbol | |
667 | type from STT_GNU_IFUNC to STT_FUNC together with its value and | |
668 | section entry. So after alloc_dynrelocs only these values should | |
669 | be used. In order to check whether a symbol is IFUNC use | |
670 | s390_is_ifunc_symbol_p. */ | |
671 | bfd_vma ifunc_resolver_address; | |
672 | asection *ifunc_resolver_section; | |
a85d7ed0 NC |
673 | }; |
674 | ||
69fc87f1 MS |
675 | #define elf_s390_hash_entry(ent) \ |
676 | ((struct elf_s390_link_hash_entry *)(ent)) | |
677 | ||
470b557a AK |
678 | /* This structure represents an entry in the local PLT list needed for |
679 | local IFUNC symbols. */ | |
680 | struct plt_entry | |
681 | { | |
682 | /* The section of the local symbol. | |
683 | Set in relocate_section and used in finish_dynamic_sections. */ | |
684 | asection *sec; | |
685 | ||
686 | union | |
687 | { | |
688 | bfd_signed_vma refcount; | |
689 | bfd_vma offset; | |
690 | } plt; | |
691 | }; | |
692 | ||
0ffa91dd NC |
693 | /* NOTE: Keep this structure in sync with |
694 | the one declared in elf64-s390.c. */ | |
69fc87f1 MS |
695 | struct elf_s390_obj_tdata |
696 | { | |
697 | struct elf_obj_tdata root; | |
698 | ||
470b557a AK |
699 | /* A local PLT is needed for ifunc symbols. */ |
700 | struct plt_entry *local_plt; | |
701 | ||
0ffa91dd | 702 | /* TLS type for each local got entry. */ |
69fc87f1 MS |
703 | char *local_got_tls_type; |
704 | }; | |
705 | ||
706 | #define elf_s390_tdata(abfd) \ | |
707 | ((struct elf_s390_obj_tdata *) (abfd)->tdata.any) | |
708 | ||
470b557a AK |
709 | #define elf_s390_local_plt(abfd) \ |
710 | (elf_s390_tdata (abfd)->local_plt) | |
711 | ||
69fc87f1 MS |
712 | #define elf_s390_local_got_tls_type(abfd) \ |
713 | (elf_s390_tdata (abfd)->local_got_tls_type) | |
714 | ||
0ffa91dd NC |
715 | #define is_s390_elf(bfd) \ |
716 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
717 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 718 | && elf_object_id (bfd) == S390_ELF_DATA) |
0ffa91dd | 719 | |
69fc87f1 | 720 | static bfd_boolean |
62d7a5f6 | 721 | elf_s390_mkobject (bfd *abfd) |
69fc87f1 | 722 | { |
0ffa91dd | 723 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata), |
4dfe6ac6 | 724 | S390_ELF_DATA); |
69fc87f1 MS |
725 | } |
726 | ||
727 | static bfd_boolean | |
2c3fc389 | 728 | elf_s390_object_p (bfd *abfd) |
69fc87f1 | 729 | { |
69fc87f1 MS |
730 | /* Set the right machine number for an s390 elf32 file. */ |
731 | return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31); | |
732 | } | |
733 | ||
a85d7ed0 NC |
734 | /* s390 ELF linker hash table. */ |
735 | ||
736 | struct elf_s390_link_hash_table | |
737 | { | |
0451c93c | 738 | struct elf_link_hash_table elf; |
a85d7ed0 | 739 | |
0451c93c | 740 | /* Short-cuts to get to dynamic linker sections. */ |
470b557a | 741 | asection *irelifunc; |
ec338859 | 742 | |
2c3fc389 NC |
743 | union |
744 | { | |
69fc87f1 MS |
745 | bfd_signed_vma refcount; |
746 | bfd_vma offset; | |
747 | } tls_ldm_got; | |
748 | ||
87d72d41 AM |
749 | /* Small local sym cache. */ |
750 | struct sym_cache sym_cache; | |
0451c93c | 751 | }; |
a85d7ed0 NC |
752 | |
753 | /* Get the s390 ELF linker hash table from a link_info structure. */ | |
754 | ||
755 | #define elf_s390_hash_table(p) \ | |
4dfe6ac6 NC |
756 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
757 | == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL) | |
a85d7ed0 | 758 | |
470b557a AK |
759 | #undef ELF64 |
760 | #include "elf-s390-common.c" | |
761 | ||
a85d7ed0 NC |
762 | /* Create an entry in an s390 ELF linker hash table. */ |
763 | ||
764 | static struct bfd_hash_entry * | |
2c3fc389 NC |
765 | link_hash_newfunc (struct bfd_hash_entry *entry, |
766 | struct bfd_hash_table *table, | |
767 | const char *string) | |
a85d7ed0 | 768 | { |
a85d7ed0 NC |
769 | /* Allocate the structure if it has not already been allocated by a |
770 | subclass. */ | |
0451c93c MS |
771 | if (entry == NULL) |
772 | { | |
773 | entry = bfd_hash_allocate (table, | |
774 | sizeof (struct elf_s390_link_hash_entry)); | |
775 | if (entry == NULL) | |
776 | return entry; | |
777 | } | |
ec338859 | 778 | |
a85d7ed0 | 779 | /* Call the allocation method of the superclass. */ |
0451c93c MS |
780 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
781 | if (entry != NULL) | |
a85d7ed0 | 782 | { |
0451c93c | 783 | struct elf_s390_link_hash_entry *eh; |
ec338859 | 784 | |
0451c93c MS |
785 | eh = (struct elf_s390_link_hash_entry *) entry; |
786 | eh->dyn_relocs = NULL; | |
5236c819 | 787 | eh->gotplt_refcount = 0; |
69fc87f1 | 788 | eh->tls_type = GOT_UNKNOWN; |
470b557a AK |
789 | eh->ifunc_resolver_address = 0; |
790 | eh->ifunc_resolver_section = NULL; | |
a85d7ed0 NC |
791 | } |
792 | ||
0451c93c | 793 | return entry; |
a85d7ed0 NC |
794 | } |
795 | ||
796 | /* Create an s390 ELF linker hash table. */ | |
797 | ||
798 | static struct bfd_link_hash_table * | |
2c3fc389 | 799 | elf_s390_link_hash_table_create (bfd *abfd) |
a85d7ed0 NC |
800 | { |
801 | struct elf_s390_link_hash_table *ret; | |
dc810e39 | 802 | bfd_size_type amt = sizeof (struct elf_s390_link_hash_table); |
a85d7ed0 | 803 | |
7bf52ea2 | 804 | ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt); |
0451c93c | 805 | if (ret == NULL) |
a85d7ed0 NC |
806 | return NULL; |
807 | ||
66eb6687 | 808 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
809 | sizeof (struct elf_s390_link_hash_entry), |
810 | S390_ELF_DATA)) | |
a85d7ed0 | 811 | { |
e2d34d7d | 812 | free (ret); |
a85d7ed0 NC |
813 | return NULL; |
814 | } | |
815 | ||
0451c93c MS |
816 | return &ret->elf.root; |
817 | } | |
818 | ||
0451c93c MS |
819 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
820 | ||
821 | static void | |
2c3fc389 NC |
822 | elf_s390_copy_indirect_symbol (struct bfd_link_info *info, |
823 | struct elf_link_hash_entry *dir, | |
824 | struct elf_link_hash_entry *ind) | |
0451c93c MS |
825 | { |
826 | struct elf_s390_link_hash_entry *edir, *eind; | |
827 | ||
828 | edir = (struct elf_s390_link_hash_entry *) dir; | |
829 | eind = (struct elf_s390_link_hash_entry *) ind; | |
830 | ||
831 | if (eind->dyn_relocs != NULL) | |
832 | { | |
833 | if (edir->dyn_relocs != NULL) | |
834 | { | |
00d8c7a9 AK |
835 | struct elf_dyn_relocs **pp; |
836 | struct elf_dyn_relocs *p; | |
0451c93c | 837 | |
fcfa13d2 | 838 | /* Add reloc counts against the indirect sym to the direct sym |
0451c93c MS |
839 | list. Merge any entries against the same section. */ |
840 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
841 | { | |
00d8c7a9 | 842 | struct elf_dyn_relocs *q; |
0451c93c MS |
843 | |
844 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
845 | if (q->sec == p->sec) | |
846 | { | |
847 | q->pc_count += p->pc_count; | |
848 | q->count += p->count; | |
849 | *pp = p->next; | |
850 | break; | |
851 | } | |
852 | if (q == NULL) | |
853 | pp = &p->next; | |
854 | } | |
855 | *pp = edir->dyn_relocs; | |
856 | } | |
857 | ||
858 | edir->dyn_relocs = eind->dyn_relocs; | |
859 | eind->dyn_relocs = NULL; | |
860 | } | |
861 | ||
69fc87f1 MS |
862 | if (ind->root.type == bfd_link_hash_indirect |
863 | && dir->got.refcount <= 0) | |
864 | { | |
865 | edir->tls_type = eind->tls_type; | |
866 | eind->tls_type = GOT_UNKNOWN; | |
867 | } | |
868 | ||
64285810 MS |
869 | if (ELIMINATE_COPY_RELOCS |
870 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
871 | && dir->dynamic_adjusted) |
872 | { | |
873 | /* If called to transfer flags for a weakdef during processing | |
874 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
875 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
e81830c5 AM |
876 | if (dir->versioned != versioned_hidden) |
877 | dir->ref_dynamic |= ind->ref_dynamic; | |
f5385ebf AM |
878 | dir->ref_regular |= ind->ref_regular; |
879 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
880 | dir->needs_plt |= ind->needs_plt; | |
881 | } | |
64285810 | 882 | else |
fcfa13d2 | 883 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
0451c93c | 884 | } |
a85d7ed0 | 885 | |
69fc87f1 | 886 | static int |
2c3fc389 NC |
887 | elf_s390_tls_transition (struct bfd_link_info *info, |
888 | int r_type, | |
889 | int is_local) | |
69fc87f1 | 890 | { |
0e1862bb | 891 | if (bfd_link_pic (info)) |
69fc87f1 MS |
892 | return r_type; |
893 | ||
894 | switch (r_type) | |
895 | { | |
896 | case R_390_TLS_GD32: | |
897 | case R_390_TLS_IE32: | |
898 | if (is_local) | |
899 | return R_390_TLS_LE32; | |
900 | return R_390_TLS_IE32; | |
901 | case R_390_TLS_GOTIE32: | |
902 | if (is_local) | |
903 | return R_390_TLS_LE32; | |
904 | return R_390_TLS_GOTIE32; | |
905 | case R_390_TLS_LDM32: | |
906 | return R_390_TLS_LE32; | |
907 | } | |
908 | ||
909 | return r_type; | |
910 | } | |
911 | ||
a85d7ed0 NC |
912 | /* Look through the relocs for a section during the first phase, and |
913 | allocate space in the global offset table or procedure linkage | |
914 | table. */ | |
915 | ||
b34976b6 | 916 | static bfd_boolean |
2c3fc389 NC |
917 | elf_s390_check_relocs (bfd *abfd, |
918 | struct bfd_link_info *info, | |
919 | asection *sec, | |
920 | const Elf_Internal_Rela *relocs) | |
a85d7ed0 | 921 | { |
0451c93c | 922 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
923 | Elf_Internal_Shdr *symtab_hdr; |
924 | struct elf_link_hash_entry **sym_hashes; | |
a85d7ed0 NC |
925 | const Elf_Internal_Rela *rel; |
926 | const Elf_Internal_Rela *rel_end; | |
a85d7ed0 | 927 | asection *sreloc; |
5236c819 | 928 | bfd_signed_vma *local_got_refcounts; |
69fc87f1 | 929 | int tls_type, old_tls_type; |
470b557a | 930 | Elf_Internal_Sym *isym; |
a85d7ed0 | 931 | |
0e1862bb | 932 | if (bfd_link_relocatable (info)) |
b34976b6 | 933 | return TRUE; |
a85d7ed0 | 934 | |
0ffa91dd NC |
935 | BFD_ASSERT (is_s390_elf (abfd)); |
936 | ||
0451c93c | 937 | htab = elf_s390_hash_table (info); |
0ffa91dd | 938 | symtab_hdr = &elf_symtab_hdr (abfd); |
a85d7ed0 | 939 | sym_hashes = elf_sym_hashes (abfd); |
5236c819 | 940 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 941 | |
a85d7ed0 NC |
942 | sreloc = NULL; |
943 | ||
944 | rel_end = relocs + sec->reloc_count; | |
945 | for (rel = relocs; rel < rel_end; rel++) | |
946 | { | |
69fc87f1 | 947 | unsigned int r_type; |
d42c267e | 948 | unsigned int r_symndx; |
a85d7ed0 NC |
949 | struct elf_link_hash_entry *h; |
950 | ||
951 | r_symndx = ELF32_R_SYM (rel->r_info); | |
952 | ||
0451c93c MS |
953 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
954 | { | |
695344c0 | 955 | /* xgettext:c-format */ |
4eca0228 AM |
956 | _bfd_error_handler (_("%B: bad symbol index: %d"), |
957 | abfd, r_symndx); | |
b34976b6 | 958 | return FALSE; |
0451c93c MS |
959 | } |
960 | ||
a85d7ed0 | 961 | if (r_symndx < symtab_hdr->sh_info) |
470b557a AK |
962 | { |
963 | /* A local symbol. */ | |
964 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
965 | abfd, r_symndx); | |
966 | if (isym == NULL) | |
967 | return FALSE; | |
968 | ||
969 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
970 | { | |
971 | struct plt_entry *plt; | |
972 | ||
0cb79d69 AK |
973 | if (htab->elf.dynobj == NULL) |
974 | htab->elf.dynobj = abfd; | |
975 | ||
470b557a AK |
976 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) |
977 | return FALSE; | |
978 | ||
979 | if (local_got_refcounts == NULL) | |
980 | { | |
981 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) | |
982 | return FALSE; | |
983 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
984 | } | |
985 | plt = elf_s390_local_plt (abfd); | |
986 | plt[r_symndx].plt.refcount++; | |
987 | } | |
988 | h = NULL; | |
989 | } | |
a85d7ed0 | 990 | else |
973a3492 L |
991 | { |
992 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
993 | while (h->root.type == bfd_link_hash_indirect | |
994 | || h->root.type == bfd_link_hash_warning) | |
995 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
996 | } | |
a85d7ed0 | 997 | |
5236c819 MS |
998 | /* Create got section and local_got_refcounts array if they |
999 | are needed. */ | |
69fc87f1 MS |
1000 | r_type = elf_s390_tls_transition (info, |
1001 | ELF32_R_TYPE (rel->r_info), | |
1002 | h == NULL); | |
1003 | switch (r_type) | |
a85d7ed0 NC |
1004 | { |
1005 | case R_390_GOT12: | |
5236c819 | 1006 | case R_390_GOT16: |
bd1ea41b | 1007 | case R_390_GOT20: |
a85d7ed0 | 1008 | case R_390_GOT32: |
befc3abb | 1009 | case R_390_GOTENT: |
5236c819 MS |
1010 | case R_390_GOTPLT12: |
1011 | case R_390_GOTPLT16: | |
bd1ea41b | 1012 | case R_390_GOTPLT20: |
5236c819 MS |
1013 | case R_390_GOTPLT32: |
1014 | case R_390_GOTPLTENT: | |
69fc87f1 MS |
1015 | case R_390_TLS_GD32: |
1016 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1017 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1018 | case R_390_TLS_GOTIE32: |
1019 | case R_390_TLS_IEENT: | |
1020 | case R_390_TLS_IE32: | |
1021 | case R_390_TLS_LDM32: | |
5236c819 MS |
1022 | if (h == NULL |
1023 | && local_got_refcounts == NULL) | |
a85d7ed0 | 1024 | { |
470b557a | 1025 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) |
5236c819 | 1026 | return FALSE; |
470b557a | 1027 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 1028 | } |
5236c819 MS |
1029 | /* Fall through. */ |
1030 | case R_390_GOTOFF16: | |
1031 | case R_390_GOTOFF32: | |
0451c93c | 1032 | case R_390_GOTPC: |
befc3abb | 1033 | case R_390_GOTPCDBL: |
f41345a7 | 1034 | if (htab->elf.sgot == NULL) |
0451c93c MS |
1035 | { |
1036 | if (htab->elf.dynobj == NULL) | |
1037 | htab->elf.dynobj = abfd; | |
ce558b89 | 1038 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) |
b34976b6 | 1039 | return FALSE; |
0451c93c | 1040 | } |
5236c819 MS |
1041 | } |
1042 | ||
470b557a AK |
1043 | if (h != NULL) |
1044 | { | |
1045 | if (htab->elf.dynobj == NULL) | |
1046 | htab->elf.dynobj = abfd; | |
1047 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
1048 | return FALSE; | |
1049 | ||
1050 | /* Make sure an IFUNC symbol defined in a non-shared object | |
1051 | always gets a PLT slot. */ | |
1052 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
1053 | { | |
1054 | /* The symbol is called by the dynamic loader in order | |
1055 | to resolve the relocation. So it is in fact also | |
1056 | referenced. */ | |
1057 | h->ref_regular = 1; | |
1058 | h->needs_plt = 1; | |
1059 | } | |
1060 | } | |
69fc87f1 | 1061 | switch (r_type) |
5236c819 | 1062 | { |
5236c819 MS |
1063 | case R_390_GOTPC: |
1064 | case R_390_GOTPCDBL: | |
470b557a AK |
1065 | /* These relocs do not need a GOT slot. They just load the |
1066 | GOT pointer itself or address something else relative to | |
1067 | the GOT. Since the GOT pointer has been set up above we | |
1068 | are done. */ | |
a85d7ed0 | 1069 | break; |
01a53584 AK |
1070 | case R_390_GOTOFF16: |
1071 | case R_390_GOTOFF32: | |
1072 | if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular) | |
1073 | break; | |
1a0670f3 | 1074 | /* Fall through. */ |
a85d7ed0 | 1075 | |
fb798c50 | 1076 | case R_390_PLT12DBL: |
26e41594 | 1077 | case R_390_PLT16DBL: |
fb798c50 | 1078 | case R_390_PLT24DBL: |
26e41594 | 1079 | case R_390_PLT32DBL: |
a85d7ed0 | 1080 | case R_390_PLT32: |
5236c819 MS |
1081 | case R_390_PLTOFF16: |
1082 | case R_390_PLTOFF32: | |
a85d7ed0 | 1083 | /* This symbol requires a procedure linkage table entry. We |
26e41594 AM |
1084 | actually build the entry in adjust_dynamic_symbol, |
1085 | because this might be a case of linking PIC code which is | |
1086 | never referenced by a dynamic object, in which case we | |
1087 | don't need to generate a procedure linkage table entry | |
1088 | after all. */ | |
a85d7ed0 NC |
1089 | |
1090 | /* If this is a local symbol, we resolve it directly without | |
26e41594 | 1091 | creating a procedure linkage table entry. */ |
5236c819 MS |
1092 | if (h != NULL) |
1093 | { | |
f5385ebf | 1094 | h->needs_plt = 1; |
5236c819 MS |
1095 | h->plt.refcount += 1; |
1096 | } | |
1097 | break; | |
a85d7ed0 | 1098 | |
5236c819 MS |
1099 | case R_390_GOTPLT12: |
1100 | case R_390_GOTPLT16: | |
bd1ea41b | 1101 | case R_390_GOTPLT20: |
5236c819 MS |
1102 | case R_390_GOTPLT32: |
1103 | case R_390_GOTPLTENT: | |
1104 | /* This symbol requires either a procedure linkage table entry | |
1105 | or an entry in the local got. We actually build the entry | |
1106 | in adjust_dynamic_symbol because whether this is really a | |
1107 | global reference can change and with it the fact if we have | |
1108 | to create a plt entry or a local got entry. To be able to | |
1109 | make a once global symbol a local one we have to keep track | |
1110 | of the number of gotplt references that exist for this | |
1111 | symbol. */ | |
1112 | if (h != NULL) | |
1113 | { | |
1114 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++; | |
f5385ebf | 1115 | h->needs_plt = 1; |
5236c819 MS |
1116 | h->plt.refcount += 1; |
1117 | } | |
1118 | else | |
1119 | local_got_refcounts[r_symndx] += 1; | |
a85d7ed0 NC |
1120 | break; |
1121 | ||
69fc87f1 MS |
1122 | case R_390_TLS_LDM32: |
1123 | htab->tls_ldm_got.refcount += 1; | |
1124 | break; | |
1125 | ||
1126 | case R_390_TLS_IE32: | |
1127 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1128 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1129 | case R_390_TLS_GOTIE32: |
1130 | case R_390_TLS_IEENT: | |
0e1862bb | 1131 | if (bfd_link_pic (info)) |
69fc87f1 | 1132 | info->flags |= DF_STATIC_TLS; |
ae9a127f | 1133 | /* Fall through. */ |
69fc87f1 MS |
1134 | |
1135 | case R_390_GOT12: | |
26e41594 | 1136 | case R_390_GOT16: |
bd1ea41b | 1137 | case R_390_GOT20: |
69fc87f1 MS |
1138 | case R_390_GOT32: |
1139 | case R_390_GOTENT: | |
1140 | case R_390_TLS_GD32: | |
1141 | /* This symbol requires a global offset table entry. */ | |
1142 | switch (r_type) | |
1143 | { | |
1144 | default: | |
1145 | case R_390_GOT12: | |
1146 | case R_390_GOT16: | |
bd1ea41b | 1147 | case R_390_GOT20: |
69fc87f1 MS |
1148 | case R_390_GOT32: |
1149 | case R_390_GOTENT: | |
1150 | tls_type = GOT_NORMAL; | |
1151 | break; | |
1152 | case R_390_TLS_GD32: | |
1153 | tls_type = GOT_TLS_GD; | |
1154 | break; | |
1155 | case R_390_TLS_IE32: | |
1156 | case R_390_TLS_GOTIE32: | |
1157 | tls_type = GOT_TLS_IE; | |
1158 | break; | |
1159 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1160 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1161 | case R_390_TLS_IEENT: |
1162 | tls_type = GOT_TLS_IE_NLT; | |
1163 | break; | |
1164 | } | |
1165 | ||
1166 | if (h != NULL) | |
1167 | { | |
1168 | h->got.refcount += 1; | |
1169 | old_tls_type = elf_s390_hash_entry(h)->tls_type; | |
1170 | } | |
1171 | else | |
1172 | { | |
1173 | local_got_refcounts[r_symndx] += 1; | |
1174 | old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx]; | |
1175 | } | |
1176 | /* If a TLS symbol is accessed using IE at least once, | |
1177 | there is no point to use dynamic model for it. */ | |
1178 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN) | |
1179 | { | |
1180 | if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL) | |
1181 | { | |
4eca0228 | 1182 | _bfd_error_handler |
695344c0 | 1183 | /* xgettext:c-format */ |
d003868e AM |
1184 | (_("%B: `%s' accessed both as normal and thread local symbol"), |
1185 | abfd, h->root.root.string); | |
69fc87f1 MS |
1186 | return FALSE; |
1187 | } | |
1188 | if (old_tls_type > tls_type) | |
1189 | tls_type = old_tls_type; | |
1190 | } | |
1191 | ||
1192 | if (old_tls_type != tls_type) | |
1193 | { | |
1194 | if (h != NULL) | |
1195 | elf_s390_hash_entry (h)->tls_type = tls_type; | |
1196 | else | |
1197 | elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1198 | } | |
1199 | ||
1200 | if (r_type != R_390_TLS_IE32) | |
1201 | break; | |
ae9a127f | 1202 | /* Fall through. */ |
69fc87f1 MS |
1203 | |
1204 | case R_390_TLS_LE32: | |
e00d879a AK |
1205 | /* For static linking and executables this reloc will be |
1206 | calculated at linktime otherwise a TLS_TPOFF runtime | |
1207 | reloc will be generated. */ | |
0e1862bb | 1208 | if (r_type == R_390_TLS_LE32 && bfd_link_pie (info)) |
e00d879a AK |
1209 | break; |
1210 | ||
0e1862bb | 1211 | if (!bfd_link_pic (info)) |
69fc87f1 MS |
1212 | break; |
1213 | info->flags |= DF_STATIC_TLS; | |
ae9a127f | 1214 | /* Fall through. */ |
69fc87f1 | 1215 | |
26e41594 AM |
1216 | case R_390_8: |
1217 | case R_390_16: | |
a85d7ed0 | 1218 | case R_390_32: |
26e41594 | 1219 | case R_390_PC16: |
fb798c50 | 1220 | case R_390_PC12DBL: |
26e41594 | 1221 | case R_390_PC16DBL: |
fb798c50 | 1222 | case R_390_PC24DBL: |
befc3abb | 1223 | case R_390_PC32DBL: |
a85d7ed0 | 1224 | case R_390_PC32: |
99ba5125 | 1225 | if (h != NULL && bfd_link_executable (info)) |
0451c93c MS |
1226 | { |
1227 | /* If this reloc is in a read-only section, we might | |
1228 | need a copy reloc. We can't check reliably at this | |
1229 | stage whether the section is read-only, as input | |
1230 | sections have not yet been mapped to output sections. | |
1231 | Tentatively set the flag for now, and correct in | |
1232 | adjust_dynamic_symbol. */ | |
f5385ebf | 1233 | h->non_got_ref = 1; |
ec338859 | 1234 | |
0e1862bb | 1235 | if (!bfd_link_pic (info)) |
470b557a AK |
1236 | { |
1237 | /* We may need a .plt entry if the function this reloc | |
1238 | refers to is in a shared lib. */ | |
1239 | h->plt.refcount += 1; | |
1240 | } | |
0451c93c | 1241 | } |
a85d7ed0 NC |
1242 | |
1243 | /* If we are creating a shared library, and this is a reloc | |
0451c93c MS |
1244 | against a global symbol, or a non PC relative reloc |
1245 | against a local symbol, then we need to copy the reloc | |
1246 | into the shared library. However, if we are linking with | |
1247 | -Bsymbolic, we do not need to copy a reloc against a | |
1248 | global symbol which is defined in an object we are | |
1249 | including in the link (i.e., DEF_REGULAR is set). At | |
1250 | this point we have not seen all the input files, so it is | |
1251 | possible that DEF_REGULAR is not set now but will be set | |
1252 | later (it is never cleared). In case of a weak definition, | |
1253 | DEF_REGULAR may be cleared later by a strong definition in | |
1254 | a shared library. We account for that possibility below by | |
1255 | storing information in the relocs_copied field of the hash | |
1256 | table entry. A similar situation occurs when creating | |
1257 | shared libraries and symbol visibility changes render the | |
1258 | symbol local. | |
1259 | ||
1260 | If on the other hand, we are creating an executable, we | |
1261 | may need to keep relocations for symbols satisfied by a | |
1262 | dynamic library if we manage to avoid copy relocs for the | |
1263 | symbol. */ | |
0e1862bb | 1264 | if ((bfd_link_pic (info) |
0451c93c | 1265 | && (sec->flags & SEC_ALLOC) != 0 |
ec338859 | 1266 | && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16 |
fb798c50 | 1267 | && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL |
0451c93c | 1268 | && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL |
fb798c50 | 1269 | && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL |
befc3abb | 1270 | && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL |
0451c93c MS |
1271 | && ELF32_R_TYPE (rel->r_info) != R_390_PC32) |
1272 | || (h != NULL | |
8c21ca21 | 1273 | && (! SYMBOLIC_BIND (info, h) |
0451c93c | 1274 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1275 | || !h->def_regular)))) |
64285810 | 1276 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 1277 | && !bfd_link_pic (info) |
0451c93c MS |
1278 | && (sec->flags & SEC_ALLOC) != 0 |
1279 | && h != NULL | |
1280 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 1281 | || !h->def_regular))) |
a85d7ed0 | 1282 | { |
00d8c7a9 AK |
1283 | struct elf_dyn_relocs *p; |
1284 | struct elf_dyn_relocs **head; | |
ec338859 | 1285 | |
0451c93c MS |
1286 | /* We must copy these reloc types into the output file. |
1287 | Create a reloc section in dynobj and make room for | |
1288 | this reloc. */ | |
a85d7ed0 NC |
1289 | if (sreloc == NULL) |
1290 | { | |
0451c93c MS |
1291 | if (htab->elf.dynobj == NULL) |
1292 | htab->elf.dynobj = abfd; | |
a85d7ed0 | 1293 | |
83bac4b0 NC |
1294 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1295 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE); | |
1296 | ||
a85d7ed0 | 1297 | if (sreloc == NULL) |
83bac4b0 | 1298 | return FALSE; |
a85d7ed0 NC |
1299 | } |
1300 | ||
0451c93c MS |
1301 | /* If this is a global symbol, we count the number of |
1302 | relocations we need for this symbol. */ | |
1303 | if (h != NULL) | |
a85d7ed0 | 1304 | { |
ec338859 | 1305 | head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs; |
0451c93c MS |
1306 | } |
1307 | else | |
1308 | { | |
ec338859 AM |
1309 | /* Track dynamic relocs needed for local syms too. |
1310 | We really need local syms available to do this | |
1311 | easily. Oh well. */ | |
ec338859 | 1312 | asection *s; |
6edfbbad | 1313 | void *vpp; |
ae9a127f | 1314 | |
87d72d41 AM |
1315 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1316 | abfd, r_symndx); | |
1317 | if (isym == NULL) | |
b34976b6 | 1318 | return FALSE; |
ec338859 | 1319 | |
87d72d41 AM |
1320 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
1321 | if (s == NULL) | |
1322 | s = sec; | |
1323 | ||
6edfbbad | 1324 | vpp = &elf_section_data (s)->local_dynrel; |
00d8c7a9 | 1325 | head = (struct elf_dyn_relocs **) vpp; |
ec338859 AM |
1326 | } |
1327 | ||
1328 | p = *head; | |
1329 | if (p == NULL || p->sec != sec) | |
1330 | { | |
1331 | bfd_size_type amt = sizeof *p; | |
ae9a127f | 1332 | |
00d8c7a9 | 1333 | p = ((struct elf_dyn_relocs *) |
ec338859 AM |
1334 | bfd_alloc (htab->elf.dynobj, amt)); |
1335 | if (p == NULL) | |
b34976b6 | 1336 | return FALSE; |
ec338859 AM |
1337 | p->next = *head; |
1338 | *head = p; | |
1339 | p->sec = sec; | |
1340 | p->count = 0; | |
1341 | p->pc_count = 0; | |
a85d7ed0 | 1342 | } |
ec338859 AM |
1343 | |
1344 | p->count += 1; | |
1345 | if (ELF32_R_TYPE (rel->r_info) == R_390_PC16 | |
fb798c50 | 1346 | || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL |
ec338859 | 1347 | || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL |
fb798c50 | 1348 | || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL |
befc3abb | 1349 | || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL |
ec338859 AM |
1350 | || ELF32_R_TYPE (rel->r_info) == R_390_PC32) |
1351 | p->pc_count += 1; | |
a85d7ed0 | 1352 | } |
a85d7ed0 | 1353 | break; |
ec338859 | 1354 | |
a85d7ed0 NC |
1355 | /* This relocation describes the C++ object vtable hierarchy. |
1356 | Reconstruct it for later use during GC. */ | |
26e41594 | 1357 | case R_390_GNU_VTINHERIT: |
c152c796 | 1358 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
26e41594 AM |
1359 | return FALSE; |
1360 | break; | |
ec338859 | 1361 | |
a85d7ed0 NC |
1362 | /* This relocation describes which C++ vtable entries are actually |
1363 | used. Record for later use during GC. */ | |
26e41594 | 1364 | case R_390_GNU_VTENTRY: |
d17e0c6e JB |
1365 | BFD_ASSERT (h != NULL); |
1366 | if (h != NULL | |
1367 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
26e41594 AM |
1368 | return FALSE; |
1369 | break; | |
ec338859 | 1370 | |
a85d7ed0 NC |
1371 | default: |
1372 | break; | |
1373 | } | |
1374 | } | |
1375 | ||
b34976b6 | 1376 | return TRUE; |
a85d7ed0 NC |
1377 | } |
1378 | ||
1379 | /* Return the section that should be marked against GC for a given | |
1380 | relocation. */ | |
1381 | ||
1382 | static asection * | |
07adf181 AM |
1383 | elf_s390_gc_mark_hook (asection *sec, |
1384 | struct bfd_link_info *info, | |
1385 | Elf_Internal_Rela *rel, | |
1386 | struct elf_link_hash_entry *h, | |
1387 | Elf_Internal_Sym *sym) | |
a85d7ed0 NC |
1388 | { |
1389 | if (h != NULL) | |
07adf181 AM |
1390 | switch (ELF32_R_TYPE (rel->r_info)) |
1391 | { | |
1392 | case R_390_GNU_VTINHERIT: | |
1393 | case R_390_GNU_VTENTRY: | |
1394 | return NULL; | |
1395 | } | |
1396 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
a85d7ed0 | 1397 | |
a85d7ed0 NC |
1398 | } |
1399 | ||
5236c819 MS |
1400 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
1401 | entry but we found we will not create any. Called when we find we will | |
1402 | not have any PLT for this symbol, by for example | |
1403 | elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
1404 | or elf_s390_size_dynamic_sections if no dynamic sections will be | |
1405 | created (we're only linking static objects). */ | |
1406 | ||
1407 | static void | |
2c3fc389 | 1408 | elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h) |
5236c819 MS |
1409 | { |
1410 | if (h->elf.root.type == bfd_link_hash_warning) | |
1411 | h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link; | |
1412 | ||
1413 | if (h->gotplt_refcount <= 0) | |
1414 | return; | |
1415 | ||
1416 | /* We simply add the number of gotplt references to the number | |
1417 | * of got references for this symbol. */ | |
1418 | h->elf.got.refcount += h->gotplt_refcount; | |
1419 | h->gotplt_refcount = -1; | |
1420 | } | |
1421 | ||
63c1f59d AM |
1422 | /* Find dynamic relocs for H that apply to read-only sections. */ |
1423 | ||
1424 | static asection * | |
1425 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
1426 | { | |
1427 | struct elf_dyn_relocs *p; | |
1428 | ||
1429 | for (p = elf_s390_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
1430 | { | |
1431 | asection *s = p->sec->output_section; | |
1432 | ||
1433 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1434 | return p->sec; | |
1435 | } | |
1436 | return NULL; | |
1437 | } | |
1438 | ||
a85d7ed0 NC |
1439 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1440 | regular object. The current definition is in some section of the | |
1441 | dynamic object, but we're not including those sections. We have to | |
1442 | change the definition to something the rest of the link can | |
1443 | understand. */ | |
1444 | ||
b34976b6 | 1445 | static bfd_boolean |
2c3fc389 NC |
1446 | elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info, |
1447 | struct elf_link_hash_entry *h) | |
a85d7ed0 | 1448 | { |
0451c93c | 1449 | struct elf_s390_link_hash_table *htab; |
5474d94f | 1450 | asection *s, *srel; |
a85d7ed0 | 1451 | |
470b557a AK |
1452 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1453 | if (s390_is_ifunc_symbol_p (h)) | |
d8ee9e44 AK |
1454 | { |
1455 | /* All local STT_GNU_IFUNC references must be treated as local | |
1456 | calls via local PLT. */ | |
1457 | if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h)) | |
1458 | { | |
1459 | bfd_size_type pc_count = 0, count = 0; | |
1460 | struct elf_dyn_relocs **pp; | |
1461 | struct elf_s390_link_hash_entry *eh; | |
1462 | struct elf_dyn_relocs *p; | |
1463 | ||
1464 | eh = (struct elf_s390_link_hash_entry *) h; | |
1465 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1466 | { | |
1467 | pc_count += p->pc_count; | |
1468 | p->count -= p->pc_count; | |
1469 | p->pc_count = 0; | |
1470 | count += p->count; | |
1471 | if (p->count == 0) | |
1472 | *pp = p->next; | |
1473 | else | |
1474 | pp = &p->next; | |
1475 | } | |
1476 | ||
1477 | if (pc_count || count) | |
1478 | { | |
1479 | h->needs_plt = 1; | |
1480 | h->non_got_ref = 1; | |
1481 | if (h->plt.refcount <= 0) | |
1482 | h->plt.refcount = 1; | |
1483 | else | |
1484 | h->plt.refcount += 1; | |
1485 | } | |
1486 | } | |
1487 | ||
1488 | if (h->plt.refcount <= 0) | |
1489 | { | |
1490 | h->plt.offset = (bfd_vma) -1; | |
1491 | h->needs_plt = 0; | |
1492 | } | |
1493 | return TRUE; | |
1494 | } | |
470b557a | 1495 | |
a85d7ed0 NC |
1496 | /* If this is a function, put it in the procedure linkage table. We |
1497 | will fill in the contents of the procedure linkage table later | |
cedb70c5 | 1498 | (although we could actually do it here). */ |
a85d7ed0 | 1499 | if (h->type == STT_FUNC |
f5385ebf | 1500 | || h->needs_plt) |
a85d7ed0 | 1501 | { |
0451c93c | 1502 | if (h->plt.refcount <= 0 |
8c21ca21 AK |
1503 | || SYMBOL_CALLS_LOCAL (info, h) |
1504 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1505 | && h->root.type != bfd_link_hash_undefweak)) | |
a85d7ed0 NC |
1506 | { |
1507 | /* This case can occur if we saw a PLT32 reloc in an input | |
26e41594 AM |
1508 | file, but the symbol was never referred to by a dynamic |
1509 | object, or if all references were garbage collected. In | |
a85d7ed0 NC |
1510 | such a case, we don't actually need to build a procedure |
1511 | linkage table, and we can just do a PC32 reloc instead. */ | |
1512 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1513 | h->needs_plt = 0; |
5236c819 | 1514 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
a85d7ed0 NC |
1515 | } |
1516 | ||
b34976b6 | 1517 | return TRUE; |
a85d7ed0 | 1518 | } |
bbd7ec4a | 1519 | else |
0451c93c MS |
1520 | /* It's possible that we incorrectly decided a .plt reloc was |
1521 | needed for an R_390_PC32 reloc to a non-function sym in | |
1522 | check_relocs. We can't decide accurately between function and | |
1523 | non-function syms in check-relocs; Objects loaded later in | |
1524 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1525 | h->plt.offset = (bfd_vma) -1; |
a85d7ed0 NC |
1526 | |
1527 | /* If this is a weak symbol, and there is a real definition, the | |
1528 | processor independent code will have arranged for us to see the | |
1529 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 1530 | if (h->is_weakalias) |
a85d7ed0 | 1531 | { |
60d67dc8 AM |
1532 | struct elf_link_hash_entry *def = weakdef (h); |
1533 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
1534 | h->root.u.def.section = def->root.u.def.section; | |
1535 | h->root.u.def.value = def->root.u.def.value; | |
64285810 | 1536 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
60d67dc8 | 1537 | h->non_got_ref = def->non_got_ref; |
b34976b6 | 1538 | return TRUE; |
a85d7ed0 NC |
1539 | } |
1540 | ||
1541 | /* This is a reference to a symbol defined by a dynamic object which | |
1542 | is not a function. */ | |
1543 | ||
1544 | /* If we are creating a shared library, we must presume that the | |
1545 | only references to the symbol are via the global offset table. | |
1546 | For such cases we need not do anything here; the relocations will | |
1547 | be handled correctly by relocate_section. */ | |
0e1862bb | 1548 | if (bfd_link_pic (info)) |
b34976b6 | 1549 | return TRUE; |
a85d7ed0 NC |
1550 | |
1551 | /* If there are no references to this symbol that do not use the | |
1552 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 1553 | if (!h->non_got_ref) |
b34976b6 | 1554 | return TRUE; |
a85d7ed0 | 1555 | |
0451c93c MS |
1556 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1557 | if (info->nocopyreloc) | |
1558 | { | |
f5385ebf | 1559 | h->non_got_ref = 0; |
b34976b6 | 1560 | return TRUE; |
0451c93c MS |
1561 | } |
1562 | ||
3bf083ed AM |
1563 | /* If we don't find any dynamic relocs in read-only sections, then |
1564 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1565 | if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h)) | |
0451c93c | 1566 | { |
3bf083ed AM |
1567 | h->non_got_ref = 0; |
1568 | return TRUE; | |
0451c93c MS |
1569 | } |
1570 | ||
a85d7ed0 NC |
1571 | /* We must allocate the symbol in our .dynbss section, which will |
1572 | become part of the .bss section of the executable. There will be | |
1573 | an entry for this symbol in the .dynsym section. The dynamic | |
1574 | object will contain position independent code, so all references | |
1575 | from the dynamic object to this symbol will go through the global | |
1576 | offset table. The dynamic linker will use the .dynsym entry to | |
1577 | determine the address it must put in the global offset table, so | |
1578 | both the dynamic object and the regular object will refer to the | |
1579 | same memory location for the variable. */ | |
1580 | ||
0451c93c | 1581 | htab = elf_s390_hash_table (info); |
a85d7ed0 | 1582 | |
0451c93c MS |
1583 | /* We must generate a R_390_COPY reloc to tell the dynamic linker to |
1584 | copy the initial value out of the dynamic object and into the | |
1585 | runtime process image. */ | |
5474d94f AM |
1586 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
1587 | { | |
1588 | s = htab->elf.sdynrelro; | |
1589 | srel = htab->elf.sreldynrelro; | |
1590 | } | |
1591 | else | |
1592 | { | |
1593 | s = htab->elf.sdynbss; | |
1594 | srel = htab->elf.srelbss; | |
1595 | } | |
1d7e9d18 | 1596 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
a85d7ed0 | 1597 | { |
5474d94f | 1598 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1599 | h->needs_copy = 1; |
a85d7ed0 NC |
1600 | } |
1601 | ||
6cabe1ea | 1602 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a85d7ed0 NC |
1603 | } |
1604 | ||
0451c93c MS |
1605 | /* Allocate space in .plt, .got and associated reloc sections for |
1606 | dynamic relocs. */ | |
1607 | ||
b34976b6 | 1608 | static bfd_boolean |
2c3fc389 | 1609 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
0451c93c MS |
1610 | { |
1611 | struct bfd_link_info *info; | |
1612 | struct elf_s390_link_hash_table *htab; | |
470b557a | 1613 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h; |
00d8c7a9 | 1614 | struct elf_dyn_relocs *p; |
0451c93c | 1615 | |
e92d460e | 1616 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1617 | return TRUE; |
0451c93c MS |
1618 | |
1619 | info = (struct bfd_link_info *) inf; | |
1620 | htab = elf_s390_hash_table (info); | |
1621 | ||
470b557a AK |
1622 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
1623 | here if it is defined and referenced in a non-shared object. */ | |
1624 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
61643fba | 1625 | return s390_elf_allocate_ifunc_dyn_relocs (info, h); |
470b557a AK |
1626 | else if (htab->elf.dynamic_sections_created |
1627 | && h->plt.refcount > 0) | |
0451c93c MS |
1628 | { |
1629 | /* Make sure this symbol is output as a dynamic symbol. | |
1630 | Undefined weak syms won't yet be marked as dynamic. */ | |
1631 | if (h->dynindx == -1 | |
f5385ebf | 1632 | && !h->forced_local) |
0451c93c | 1633 | { |
c152c796 | 1634 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1635 | return FALSE; |
0451c93c MS |
1636 | } |
1637 | ||
0e1862bb | 1638 | if (bfd_link_pic (info) |
4ec72bde | 1639 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
0451c93c | 1640 | { |
f41345a7 | 1641 | asection *s = htab->elf.splt; |
0451c93c MS |
1642 | |
1643 | /* If this is the first .plt entry, make room for the special | |
1644 | first entry. */ | |
eea6121a AM |
1645 | if (s->size == 0) |
1646 | s->size += PLT_FIRST_ENTRY_SIZE; | |
0451c93c | 1647 | |
eea6121a | 1648 | h->plt.offset = s->size; |
0451c93c MS |
1649 | |
1650 | /* If this symbol is not defined in a regular file, and we are | |
1651 | not generating a shared library, then set the symbol to this | |
1652 | location in the .plt. This is required to make function | |
1653 | pointers compare as equal between the normal executable and | |
1654 | the shared library. */ | |
0e1862bb | 1655 | if (! bfd_link_pic (info) |
f5385ebf | 1656 | && !h->def_regular) |
0451c93c MS |
1657 | { |
1658 | h->root.u.def.section = s; | |
1659 | h->root.u.def.value = h->plt.offset; | |
1660 | } | |
ec338859 | 1661 | |
0451c93c | 1662 | /* Make room for this entry. */ |
eea6121a | 1663 | s->size += PLT_ENTRY_SIZE; |
ec338859 | 1664 | |
0451c93c MS |
1665 | /* We also need to make an entry in the .got.plt section, which |
1666 | will be placed in the .got section by the linker script. */ | |
f41345a7 | 1667 | htab->elf.sgotplt->size += GOT_ENTRY_SIZE; |
0451c93c MS |
1668 | |
1669 | /* We also need to make an entry in the .rela.plt section. */ | |
f41345a7 | 1670 | htab->elf.srelplt->size += sizeof (Elf32_External_Rela); |
0451c93c MS |
1671 | } |
1672 | else | |
1673 | { | |
07d6d2b8 | 1674 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1675 | h->needs_plt = 0; |
5236c819 | 1676 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c | 1677 | } |
ec338859 | 1678 | } |
0451c93c MS |
1679 | else |
1680 | { | |
1681 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1682 | h->needs_plt = 0; |
5236c819 | 1683 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
ec338859 AM |
1684 | } |
1685 | ||
69fc87f1 MS |
1686 | /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to |
1687 | the binary, we can optimize a bit. IE32 and GOTIE32 get converted | |
1688 | to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT | |
1689 | we can save the dynamic TLS relocation. */ | |
1690 | if (h->got.refcount > 0 | |
0e1862bb | 1691 | && !bfd_link_pic (info) |
69fc87f1 MS |
1692 | && h->dynindx == -1 |
1693 | && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE) | |
0451c93c | 1694 | { |
69fc87f1 MS |
1695 | if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT) |
1696 | /* For the GOTIE access without a literal pool entry the offset has | |
1697 | to be stored somewhere. The immediate value in the instruction | |
1698 | is not bit enough so the value is stored in the got. */ | |
1699 | { | |
f41345a7 AK |
1700 | h->got.offset = htab->elf.sgot->size; |
1701 | htab->elf.sgot->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1702 | } |
1703 | else | |
1704 | h->got.offset = (bfd_vma) -1; | |
1705 | } | |
1706 | else if (h->got.refcount > 0) | |
ceada896 | 1707 | { |
0451c93c | 1708 | asection *s; |
b34976b6 | 1709 | bfd_boolean dyn; |
69fc87f1 | 1710 | int tls_type = elf_s390_hash_entry(h)->tls_type; |
0451c93c MS |
1711 | |
1712 | /* Make sure this symbol is output as a dynamic symbol. | |
1713 | Undefined weak syms won't yet be marked as dynamic. */ | |
1714 | if (h->dynindx == -1 | |
f5385ebf | 1715 | && !h->forced_local) |
0451c93c | 1716 | { |
c152c796 | 1717 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1718 | return FALSE; |
0451c93c MS |
1719 | } |
1720 | ||
f41345a7 | 1721 | s = htab->elf.sgot; |
eea6121a AM |
1722 | h->got.offset = s->size; |
1723 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1724 | /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */ |
1725 | if (tls_type == GOT_TLS_GD) | |
eea6121a | 1726 | s->size += GOT_ENTRY_SIZE; |
0451c93c | 1727 | dyn = htab->elf.dynamic_sections_created; |
69fc87f1 MS |
1728 | /* R_390_TLS_IE32 needs one dynamic relocation, |
1729 | R_390_TLS_GD32 needs one if local symbol and two if global. */ | |
1730 | if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1731 | || tls_type >= GOT_TLS_IE) | |
f41345a7 | 1732 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
69fc87f1 | 1733 | else if (tls_type == GOT_TLS_GD) |
f41345a7 | 1734 | htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela); |
82058a73 MS |
1735 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1736 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 1737 | && (bfd_link_pic (info) |
82058a73 | 1738 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
f41345a7 | 1739 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
0451c93c MS |
1740 | } |
1741 | else | |
1742 | h->got.offset = (bfd_vma) -1; | |
1743 | ||
0451c93c | 1744 | if (eh->dyn_relocs == NULL) |
b34976b6 | 1745 | return TRUE; |
0451c93c MS |
1746 | |
1747 | /* In the shared -Bsymbolic case, discard space allocated for | |
1748 | dynamic pc-relative relocs against symbols which turn out to be | |
1749 | defined in regular objects. For the normal shared case, discard | |
1750 | space for pc-relative relocs that have become local due to symbol | |
1751 | visibility changes. */ | |
1752 | ||
0e1862bb | 1753 | if (bfd_link_pic (info)) |
0451c93c | 1754 | { |
8c21ca21 | 1755 | if (SYMBOL_CALLS_LOCAL (info, h)) |
0451c93c | 1756 | { |
00d8c7a9 | 1757 | struct elf_dyn_relocs **pp; |
0451c93c MS |
1758 | |
1759 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1760 | { | |
1761 | p->count -= p->pc_count; | |
1762 | p->pc_count = 0; | |
1763 | if (p->count == 0) | |
1764 | *pp = p->next; | |
1765 | else | |
1766 | pp = &p->next; | |
1767 | } | |
1768 | } | |
82058a73 MS |
1769 | |
1770 | /* Also discard relocs on undefined weak syms with non-default | |
1771 | visibility. */ | |
22d606e9 | 1772 | if (eh->dyn_relocs != NULL |
82058a73 | 1773 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 | 1774 | { |
b27bb18f L |
1775 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
1776 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
22d606e9 AM |
1777 | eh->dyn_relocs = NULL; |
1778 | ||
1779 | /* Make sure undefined weak symbols are output as a dynamic | |
1780 | symbol in PIEs. */ | |
1781 | else if (h->dynindx == -1 | |
1782 | && !h->forced_local) | |
1783 | { | |
1784 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1785 | return FALSE; | |
1786 | } | |
1787 | } | |
0451c93c | 1788 | } |
64285810 | 1789 | else if (ELIMINATE_COPY_RELOCS) |
0451c93c MS |
1790 | { |
1791 | /* For the non-shared case, discard space for relocs against | |
1792 | symbols which turn out to need copy relocs or are not | |
1793 | dynamic. */ | |
1794 | ||
f5385ebf AM |
1795 | if (!h->non_got_ref |
1796 | && ((h->def_dynamic | |
1797 | && !h->def_regular) | |
0451c93c MS |
1798 | || (htab->elf.dynamic_sections_created |
1799 | && (h->root.type == bfd_link_hash_undefweak | |
1800 | || h->root.type == bfd_link_hash_undefined)))) | |
1801 | { | |
1802 | /* Make sure this symbol is output as a dynamic symbol. | |
1803 | Undefined weak syms won't yet be marked as dynamic. */ | |
1804 | if (h->dynindx == -1 | |
f5385ebf | 1805 | && !h->forced_local) |
0451c93c | 1806 | { |
c152c796 | 1807 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1808 | return FALSE; |
0451c93c MS |
1809 | } |
1810 | ||
1811 | /* If that succeeded, we know we'll be keeping all the | |
1812 | relocs. */ | |
1813 | if (h->dynindx != -1) | |
1814 | goto keep; | |
1815 | } | |
1816 | ||
1817 | eh->dyn_relocs = NULL; | |
1818 | ||
ec338859 | 1819 | keep: ; |
0451c93c MS |
1820 | } |
1821 | ||
1822 | /* Finally, allocate space. */ | |
1823 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1824 | { | |
1825 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
ae9a127f | 1826 | |
eea6121a | 1827 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
0451c93c MS |
1828 | } |
1829 | ||
b34976b6 | 1830 | return TRUE; |
0451c93c MS |
1831 | } |
1832 | ||
63c1f59d AM |
1833 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
1834 | read-only sections. */ | |
0451c93c | 1835 | |
b34976b6 | 1836 | static bfd_boolean |
63c1f59d | 1837 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
0451c93c | 1838 | { |
63c1f59d | 1839 | asection *sec; |
0451c93c | 1840 | |
63c1f59d AM |
1841 | if (h->root.type == bfd_link_hash_indirect) |
1842 | return TRUE; | |
0451c93c | 1843 | |
63c1f59d AM |
1844 | sec = readonly_dynrelocs (h); |
1845 | if (sec != NULL) | |
1846 | { | |
1847 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; | |
0451c93c | 1848 | |
63c1f59d AM |
1849 | info->flags |= DF_TEXTREL; |
1850 | info->callbacks->minfo | |
1851 | (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"), | |
1852 | sec->owner, h->root.root.string, sec); | |
0451c93c | 1853 | |
63c1f59d AM |
1854 | /* Not an error, just cut short the traversal. */ |
1855 | return FALSE; | |
0451c93c | 1856 | } |
b34976b6 | 1857 | return TRUE; |
0451c93c MS |
1858 | } |
1859 | ||
a85d7ed0 NC |
1860 | /* Set the sizes of the dynamic sections. */ |
1861 | ||
b34976b6 | 1862 | static bfd_boolean |
2c3fc389 NC |
1863 | elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
1864 | struct bfd_link_info *info) | |
a85d7ed0 | 1865 | { |
0451c93c | 1866 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
1867 | bfd *dynobj; |
1868 | asection *s; | |
b34976b6 | 1869 | bfd_boolean relocs; |
0451c93c | 1870 | bfd *ibfd; |
a85d7ed0 | 1871 | |
0451c93c MS |
1872 | htab = elf_s390_hash_table (info); |
1873 | dynobj = htab->elf.dynobj; | |
1874 | if (dynobj == NULL) | |
1875 | abort (); | |
a85d7ed0 | 1876 | |
0451c93c | 1877 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
1878 | { |
1879 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 1880 | if (bfd_link_executable (info) && !info->nointerp) |
a85d7ed0 | 1881 | { |
3d4d4302 | 1882 | s = bfd_get_linker_section (dynobj, ".interp"); |
0451c93c MS |
1883 | if (s == NULL) |
1884 | abort (); | |
eea6121a | 1885 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
a85d7ed0 NC |
1886 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1887 | } | |
1888 | } | |
a85d7ed0 | 1889 | |
0451c93c MS |
1890 | /* Set up .got offsets for local syms, and space for local dynamic |
1891 | relocs. */ | |
c72f2fb2 | 1892 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a85d7ed0 | 1893 | { |
0451c93c MS |
1894 | bfd_signed_vma *local_got; |
1895 | bfd_signed_vma *end_local_got; | |
69fc87f1 | 1896 | char *local_tls_type; |
0451c93c MS |
1897 | bfd_size_type locsymcount; |
1898 | Elf_Internal_Shdr *symtab_hdr; | |
1899 | asection *srela; | |
470b557a AK |
1900 | struct plt_entry *local_plt; |
1901 | unsigned int i; | |
a85d7ed0 | 1902 | |
0ffa91dd | 1903 | if (! is_s390_elf (ibfd)) |
a85d7ed0 NC |
1904 | continue; |
1905 | ||
0451c93c | 1906 | for (s = ibfd->sections; s != NULL; s = s->next) |
a85d7ed0 | 1907 | { |
00d8c7a9 | 1908 | struct elf_dyn_relocs *p; |
0451c93c | 1909 | |
6edfbbad | 1910 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
a85d7ed0 | 1911 | { |
ec338859 AM |
1912 | if (!bfd_is_abs_section (p->sec) |
1913 | && bfd_is_abs_section (p->sec->output_section)) | |
1914 | { | |
1915 | /* Input section has been discarded, either because | |
1916 | it is a copy of a linkonce section or due to | |
1917 | linker script /DISCARD/, so we'll be discarding | |
1918 | the relocs too. */ | |
1919 | } | |
248866a8 | 1920 | else if (p->count != 0) |
ec338859 AM |
1921 | { |
1922 | srela = elf_section_data (p->sec)->sreloc; | |
eea6121a | 1923 | srela->size += p->count * sizeof (Elf32_External_Rela); |
248866a8 AM |
1924 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
1925 | info->flags |= DF_TEXTREL; | |
ec338859 | 1926 | } |
a85d7ed0 NC |
1927 | } |
1928 | } | |
0451c93c MS |
1929 | |
1930 | local_got = elf_local_got_refcounts (ibfd); | |
1931 | if (!local_got) | |
1932 | continue; | |
1933 | ||
0ffa91dd | 1934 | symtab_hdr = &elf_symtab_hdr (ibfd); |
0451c93c MS |
1935 | locsymcount = symtab_hdr->sh_info; |
1936 | end_local_got = local_got + locsymcount; | |
69fc87f1 | 1937 | local_tls_type = elf_s390_local_got_tls_type (ibfd); |
f41345a7 AK |
1938 | s = htab->elf.sgot; |
1939 | srela = htab->elf.srelgot; | |
69fc87f1 | 1940 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
a85d7ed0 | 1941 | { |
0451c93c | 1942 | if (*local_got > 0) |
a85d7ed0 | 1943 | { |
eea6121a AM |
1944 | *local_got = s->size; |
1945 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 | 1946 | if (*local_tls_type == GOT_TLS_GD) |
eea6121a | 1947 | s->size += GOT_ENTRY_SIZE; |
0e1862bb | 1948 | if (bfd_link_pic (info)) |
eea6121a | 1949 | srela->size += sizeof (Elf32_External_Rela); |
a85d7ed0 NC |
1950 | } |
1951 | else | |
0451c93c MS |
1952 | *local_got = (bfd_vma) -1; |
1953 | } | |
470b557a AK |
1954 | local_plt = elf_s390_local_plt (ibfd); |
1955 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
1956 | { | |
1957 | if (local_plt[i].plt.refcount > 0) | |
1958 | { | |
1959 | local_plt[i].plt.offset = htab->elf.iplt->size; | |
1960 | htab->elf.iplt->size += PLT_ENTRY_SIZE; | |
1961 | htab->elf.igotplt->size += GOT_ENTRY_SIZE; | |
1962 | htab->elf.irelplt->size += RELA_ENTRY_SIZE; | |
1963 | } | |
1964 | else | |
07d6d2b8 | 1965 | local_plt[i].plt.offset = (bfd_vma) -1; |
470b557a | 1966 | } |
0451c93c MS |
1967 | } |
1968 | ||
69fc87f1 MS |
1969 | if (htab->tls_ldm_got.refcount > 0) |
1970 | { | |
1971 | /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32 | |
1972 | relocs. */ | |
f41345a7 AK |
1973 | htab->tls_ldm_got.offset = htab->elf.sgot->size; |
1974 | htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE; | |
1975 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); | |
69fc87f1 MS |
1976 | } |
1977 | else | |
1978 | htab->tls_ldm_got.offset = -1; | |
1979 | ||
0451c93c MS |
1980 | /* Allocate global sym .plt and .got entries, and space for global |
1981 | sym dynamic relocs. */ | |
2c3fc389 | 1982 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
0451c93c MS |
1983 | |
1984 | /* We now have determined the sizes of the various dynamic sections. | |
1985 | Allocate memory for them. */ | |
b34976b6 | 1986 | relocs = FALSE; |
0451c93c MS |
1987 | for (s = dynobj->sections; s != NULL; s = s->next) |
1988 | { | |
1989 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1990 | continue; | |
1991 | ||
f41345a7 AK |
1992 | if (s == htab->elf.splt |
1993 | || s == htab->elf.sgot | |
1994 | || s == htab->elf.sgotplt | |
9d19e4fd | 1995 | || s == htab->elf.sdynbss |
5474d94f | 1996 | || s == htab->elf.sdynrelro |
470b557a AK |
1997 | || s == htab->elf.iplt |
1998 | || s == htab->elf.igotplt | |
1999 | || s == htab->irelifunc) | |
0451c93c MS |
2000 | { |
2001 | /* Strip this section if we don't need it; see the | |
2002 | comment below. */ | |
a85d7ed0 | 2003 | } |
0112cd26 | 2004 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
0451c93c | 2005 | { |
eea6121a | 2006 | if (s->size != 0) |
b34976b6 | 2007 | relocs = TRUE; |
ec338859 | 2008 | |
0451c93c MS |
2009 | /* We use the reloc_count field as a counter if we need |
2010 | to copy relocs into the output file. */ | |
2011 | s->reloc_count = 0; | |
2012 | } | |
2013 | else | |
a85d7ed0 NC |
2014 | { |
2015 | /* It's not one of our sections, so don't allocate space. */ | |
2016 | continue; | |
2017 | } | |
2018 | ||
eea6121a | 2019 | if (s->size == 0) |
a85d7ed0 | 2020 | { |
0451c93c MS |
2021 | /* If we don't need this section, strip it from the |
2022 | output file. This is to handle .rela.bss and | |
2023 | .rela.plt. We must create it in | |
2024 | create_dynamic_sections, because it must be created | |
2025 | before the linker maps input sections to output | |
2026 | sections. The linker does that before | |
2027 | adjust_dynamic_symbol is called, and it is that | |
2028 | function which decides whether anything needs to go | |
2029 | into these sections. */ | |
2030 | ||
8423293d | 2031 | s->flags |= SEC_EXCLUDE; |
a85d7ed0 NC |
2032 | continue; |
2033 | } | |
2034 | ||
c456f082 AM |
2035 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2036 | continue; | |
2037 | ||
0451c93c MS |
2038 | /* Allocate memory for the section contents. We use bfd_zalloc |
2039 | here in case unused entries are not reclaimed before the | |
2040 | section's contents are written out. This should not happen, | |
2041 | but this way if it does, we get a R_390_NONE reloc instead | |
2042 | of garbage. */ | |
eea6121a | 2043 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
0451c93c | 2044 | if (s->contents == NULL) |
b34976b6 | 2045 | return FALSE; |
a85d7ed0 | 2046 | } |
ec338859 | 2047 | |
0451c93c | 2048 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
2049 | { |
2050 | /* Add some entries to the .dynamic section. We fill in the | |
2051 | values later, in elf_s390_finish_dynamic_sections, but we | |
2052 | must add the entries now so that we get the correct size for | |
2053 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2054 | dynamic linker and used by the debugger. */ | |
dc810e39 | 2055 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2056 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
ec338859 | 2057 | |
0e1862bb | 2058 | if (bfd_link_executable (info)) |
a85d7ed0 | 2059 | { |
dc810e39 | 2060 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2061 | return FALSE; |
a85d7ed0 | 2062 | } |
ec338859 | 2063 | |
f41345a7 | 2064 | if (htab->elf.splt->size != 0) |
a85d7ed0 | 2065 | { |
dc810e39 AM |
2066 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2067 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2068 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2069 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2070 | return FALSE; |
a85d7ed0 | 2071 | } |
ec338859 | 2072 | |
a85d7ed0 | 2073 | if (relocs) |
26e41594 AM |
2074 | { |
2075 | if (!add_dynamic_entry (DT_RELA, 0) | |
2076 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2077 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 2078 | return FALSE; |
a85d7ed0 | 2079 | |
0451c93c MS |
2080 | /* If any dynamic relocs apply to a read-only section, |
2081 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 2082 | if ((info->flags & DF_TEXTREL) == 0) |
63c1f59d | 2083 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
ec338859 | 2084 | |
0451c93c MS |
2085 | if ((info->flags & DF_TEXTREL) != 0) |
2086 | { | |
2087 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2088 | return FALSE; |
0451c93c | 2089 | } |
a85d7ed0 NC |
2090 | } |
2091 | } | |
dc810e39 | 2092 | #undef add_dynamic_entry |
ec338859 | 2093 | |
b34976b6 | 2094 | return TRUE; |
a85d7ed0 NC |
2095 | } |
2096 | ||
69fc87f1 MS |
2097 | /* Return the base VMA address which should be subtracted from real addresses |
2098 | when resolving @dtpoff relocation. | |
2099 | This is PT_TLS segment p_vaddr. */ | |
2100 | ||
2101 | static bfd_vma | |
2c3fc389 | 2102 | dtpoff_base (struct bfd_link_info *info) |
69fc87f1 | 2103 | { |
e1918d23 AM |
2104 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2105 | if (elf_hash_table (info)->tls_sec == NULL) | |
69fc87f1 | 2106 | return 0; |
e1918d23 | 2107 | return elf_hash_table (info)->tls_sec->vma; |
69fc87f1 MS |
2108 | } |
2109 | ||
2110 | /* Return the relocation value for @tpoff relocation | |
2111 | if STT_TLS virtual address is ADDRESS. */ | |
2112 | ||
2113 | static bfd_vma | |
2c3fc389 | 2114 | tpoff (struct bfd_link_info *info, bfd_vma address) |
69fc87f1 | 2115 | { |
e1918d23 | 2116 | struct elf_link_hash_table *htab = elf_hash_table (info); |
69fc87f1 | 2117 | |
e1918d23 AM |
2118 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2119 | if (htab->tls_sec == NULL) | |
69fc87f1 | 2120 | return 0; |
e1918d23 | 2121 | return htab->tls_size + htab->tls_sec->vma - address; |
69fc87f1 MS |
2122 | } |
2123 | ||
2124 | /* Complain if TLS instruction relocation is against an invalid | |
2125 | instruction. */ | |
2126 | ||
2127 | static void | |
2c3fc389 NC |
2128 | invalid_tls_insn (bfd *input_bfd, |
2129 | asection *input_section, | |
2130 | Elf_Internal_Rela *rel) | |
69fc87f1 MS |
2131 | { |
2132 | reloc_howto_type *howto; | |
2133 | ||
2134 | howto = elf_howto_table + ELF32_R_TYPE (rel->r_info); | |
4eca0228 | 2135 | _bfd_error_handler |
695344c0 | 2136 | /* xgettext:c-format */ |
d42c267e | 2137 | (_("%B(%A+%#Lx): invalid instruction for TLS relocation %s"), |
d003868e AM |
2138 | input_bfd, |
2139 | input_section, | |
d42c267e | 2140 | rel->r_offset, |
69fc87f1 | 2141 | howto->name); |
77df2968 | 2142 | bfd_set_error (bfd_error_bad_value); |
69fc87f1 MS |
2143 | } |
2144 | ||
a85d7ed0 NC |
2145 | /* Relocate a 390 ELF section. */ |
2146 | ||
b34976b6 | 2147 | static bfd_boolean |
2c3fc389 NC |
2148 | elf_s390_relocate_section (bfd *output_bfd, |
2149 | struct bfd_link_info *info, | |
2150 | bfd *input_bfd, | |
2151 | asection *input_section, | |
2152 | bfd_byte *contents, | |
2153 | Elf_Internal_Rela *relocs, | |
2154 | Elf_Internal_Sym *local_syms, | |
2155 | asection **local_sections) | |
a85d7ed0 | 2156 | { |
0451c93c | 2157 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
2158 | Elf_Internal_Shdr *symtab_hdr; |
2159 | struct elf_link_hash_entry **sym_hashes; | |
2160 | bfd_vma *local_got_offsets; | |
a85d7ed0 NC |
2161 | Elf_Internal_Rela *rel; |
2162 | Elf_Internal_Rela *relend; | |
2163 | ||
0ffa91dd NC |
2164 | BFD_ASSERT (is_s390_elf (input_bfd)); |
2165 | ||
0451c93c | 2166 | htab = elf_s390_hash_table (info); |
0ffa91dd | 2167 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
a85d7ed0 NC |
2168 | sym_hashes = elf_sym_hashes (input_bfd); |
2169 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2170 | ||
a85d7ed0 NC |
2171 | rel = relocs; |
2172 | relend = relocs + input_section->reloc_count; | |
2173 | for (; rel < relend; rel++) | |
2174 | { | |
5236c819 | 2175 | unsigned int r_type; |
a85d7ed0 NC |
2176 | reloc_howto_type *howto; |
2177 | unsigned long r_symndx; | |
2178 | struct elf_link_hash_entry *h; | |
2179 | Elf_Internal_Sym *sym; | |
2180 | asection *sec; | |
0451c93c | 2181 | bfd_vma off; |
a85d7ed0 | 2182 | bfd_vma relocation; |
b34976b6 | 2183 | bfd_boolean unresolved_reloc; |
a85d7ed0 | 2184 | bfd_reloc_status_type r; |
69fc87f1 | 2185 | int tls_type; |
470b557a | 2186 | asection *base_got = htab->elf.sgot; |
b27bb18f | 2187 | bfd_boolean resolved_to_zero; |
ec338859 | 2188 | |
a85d7ed0 NC |
2189 | r_type = ELF32_R_TYPE (rel->r_info); |
2190 | if (r_type == (int) R_390_GNU_VTINHERIT | |
26e41594 AM |
2191 | || r_type == (int) R_390_GNU_VTENTRY) |
2192 | continue; | |
5236c819 | 2193 | if (r_type >= (int) R_390_max) |
a85d7ed0 NC |
2194 | { |
2195 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2196 | return FALSE; |
a85d7ed0 | 2197 | } |
ec338859 | 2198 | |
b491616a | 2199 | howto = elf_howto_table + r_type; |
a85d7ed0 | 2200 | r_symndx = ELF32_R_SYM (rel->r_info); |
5236c819 | 2201 | |
a85d7ed0 NC |
2202 | h = NULL; |
2203 | sym = NULL; | |
2204 | sec = NULL; | |
b34976b6 | 2205 | unresolved_reloc = FALSE; |
a85d7ed0 NC |
2206 | if (r_symndx < symtab_hdr->sh_info) |
2207 | { | |
2208 | sym = local_syms + r_symndx; | |
2209 | sec = local_sections[r_symndx]; | |
470b557a AK |
2210 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
2211 | { | |
2212 | struct plt_entry *local_plt = elf_s390_local_plt (input_bfd); | |
2213 | if (local_plt == NULL) | |
2214 | return FALSE; | |
2215 | ||
2216 | /* Address of the PLT slot. */ | |
2217 | relocation = (htab->elf.iplt->output_section->vma | |
2218 | + htab->elf.iplt->output_offset | |
2219 | + local_plt[r_symndx].plt.offset); | |
2220 | ||
2221 | switch (r_type) | |
2222 | { | |
31db78f6 AK |
2223 | case R_390_PLTOFF16: |
2224 | case R_390_PLTOFF32: | |
2225 | relocation -= htab->elf.sgot->output_section->vma; | |
2226 | break; | |
470b557a AK |
2227 | case R_390_GOTPLT12: |
2228 | case R_390_GOTPLT16: | |
2229 | case R_390_GOTPLT20: | |
2230 | case R_390_GOTPLT32: | |
2231 | case R_390_GOTPLTENT: | |
2232 | case R_390_GOT12: | |
2233 | case R_390_GOT16: | |
2234 | case R_390_GOT20: | |
2235 | case R_390_GOT32: | |
2236 | case R_390_GOTENT: | |
2237 | { | |
2238 | /* Write the PLT slot address into the GOT slot. */ | |
2239 | bfd_put_32 (output_bfd, relocation, | |
2240 | htab->elf.sgot->contents + | |
2241 | local_got_offsets[r_symndx]); | |
2242 | relocation = (local_got_offsets[r_symndx] + | |
2243 | htab->elf.sgot->output_offset); | |
2244 | ||
2245 | if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT) | |
2246 | relocation += htab->elf.sgot->output_section->vma; | |
2247 | break; | |
2248 | } | |
2249 | default: | |
2250 | break; | |
2251 | } | |
2252 | /* The output section is needed later in | |
2253 | finish_dynamic_section when creating the dynamic | |
2254 | relocation. */ | |
2255 | local_plt[r_symndx].sec = sec; | |
2256 | goto do_relocation; | |
2257 | } | |
2258 | else | |
2259 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
a85d7ed0 NC |
2260 | } |
2261 | else | |
2262 | { | |
560e09e9 | 2263 | bfd_boolean warned ATTRIBUTE_UNUSED; |
62d887d4 | 2264 | bfd_boolean ignored ATTRIBUTE_UNUSED; |
ec338859 | 2265 | |
b2a8e766 AM |
2266 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2267 | r_symndx, symtab_hdr, sym_hashes, | |
2268 | h, sec, relocation, | |
62d887d4 | 2269 | unresolved_reloc, warned, ignored); |
a85d7ed0 | 2270 | } |
ec338859 | 2271 | |
dbaa2011 | 2272 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 2273 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 2274 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 2275 | |
0e1862bb | 2276 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
2277 | continue; |
2278 | ||
b27bb18f L |
2279 | resolved_to_zero = (h != NULL |
2280 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
2281 | ||
a85d7ed0 NC |
2282 | switch (r_type) |
2283 | { | |
5236c819 MS |
2284 | case R_390_GOTPLT12: |
2285 | case R_390_GOTPLT16: | |
bd1ea41b | 2286 | case R_390_GOTPLT20: |
5236c819 MS |
2287 | case R_390_GOTPLT32: |
2288 | case R_390_GOTPLTENT: | |
2289 | /* There are three cases for a GOTPLT relocation. 1) The | |
2290 | relocation is against the jump slot entry of a plt that | |
2291 | will get emitted to the output file. 2) The relocation | |
2292 | is against the jump slot of a plt entry that has been | |
2293 | removed. elf_s390_adjust_gotplt has created a GOT entry | |
2294 | as replacement. 3) The relocation is against a local symbol. | |
2295 | Cases 2) and 3) are the same as the GOT relocation code | |
2296 | so we just have to test for case 1 and fall through for | |
2297 | the other two. */ | |
2298 | if (h != NULL && h->plt.offset != (bfd_vma) -1) | |
2299 | { | |
2300 | bfd_vma plt_index; | |
2301 | ||
470b557a AK |
2302 | if (s390_is_ifunc_symbol_p (h)) |
2303 | { | |
2304 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; | |
2305 | relocation = (plt_index * GOT_ENTRY_SIZE + | |
2306 | htab->elf.igotplt->output_offset); | |
2307 | if (r_type == R_390_GOTPLTENT) | |
2308 | relocation += htab->elf.igotplt->output_section->vma; | |
2309 | } | |
2310 | else | |
2311 | { | |
2312 | /* Calc. index no. | |
2313 | Current offset - size first entry / entry size. */ | |
2314 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / | |
2315 | PLT_ENTRY_SIZE; | |
2316 | ||
2317 | /* Offset in GOT is PLT index plus GOT headers(3) | |
2318 | times 4, addr & GOT addr. */ | |
2319 | relocation = (plt_index + 3) * GOT_ENTRY_SIZE; | |
2320 | if (r_type == R_390_GOTPLTENT) | |
2321 | relocation += htab->elf.sgot->output_section->vma; | |
2322 | } | |
5236c819 MS |
2323 | unresolved_reloc = FALSE; |
2324 | ||
5236c819 MS |
2325 | } |
2326 | /* Fall through. */ | |
2327 | ||
26e41594 AM |
2328 | case R_390_GOT12: |
2329 | case R_390_GOT16: | |
bd1ea41b | 2330 | case R_390_GOT20: |
26e41594 | 2331 | case R_390_GOT32: |
befc3abb | 2332 | case R_390_GOTENT: |
26e41594 AM |
2333 | /* Relocation is to the entry for this symbol in the global |
2334 | offset table. */ | |
470b557a | 2335 | if (base_got == NULL) |
0451c93c | 2336 | abort (); |
ec338859 | 2337 | |
26e41594 AM |
2338 | if (h != NULL) |
2339 | { | |
b34976b6 | 2340 | bfd_boolean dyn; |
ec338859 | 2341 | |
26e41594 | 2342 | off = h->got.offset; |
0451c93c | 2343 | dyn = htab->elf.dynamic_sections_created; |
470b557a AK |
2344 | |
2345 | if (s390_is_ifunc_symbol_p (h)) | |
2346 | { | |
2347 | BFD_ASSERT (h->plt.offset != (bfd_vma) -1); | |
2348 | if (off == (bfd_vma)-1) | |
2349 | { | |
2350 | /* No explicit GOT usage so redirect to the | |
2351 | got.iplt slot. */ | |
2352 | base_got = htab->elf.igotplt; | |
2353 | off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE; | |
2354 | } | |
2355 | else | |
2356 | { | |
2357 | /* Explicit GOT slots must contain the address | |
2358 | of the PLT slot. This will be handled in | |
2359 | finish_dynamic_symbol. */ | |
2360 | } | |
2361 | } | |
0e1862bb L |
2362 | else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
2363 | bfd_link_pic (info), | |
2364 | h) | |
2365 | || (bfd_link_pic (info) | |
470b557a AK |
2366 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
2367 | || (ELF_ST_VISIBILITY (h->other) | |
2368 | && h->root.type == bfd_link_hash_undefweak)) | |
2369 | ||
26e41594 AM |
2370 | { |
2371 | /* This is actually a static link, or it is a | |
2372 | -Bsymbolic link and the symbol is defined | |
2373 | locally, or the symbol was forced to be local | |
2374 | because of a version file. We must initialize | |
2375 | this entry in the global offset table. Since the | |
2376 | offset must always be a multiple of 2, we use the | |
2377 | least significant bit to record whether we have | |
2378 | initialized it already. | |
2379 | ||
2380 | When doing a dynamic link, we create a .rel.got | |
2381 | relocation entry to initialize the value. This | |
2382 | is done in the finish_dynamic_symbol routine. */ | |
2383 | if ((off & 1) != 0) | |
2384 | off &= ~1; | |
2385 | else | |
2386 | { | |
a85d7ed0 | 2387 | bfd_put_32 (output_bfd, relocation, |
470b557a | 2388 | base_got->contents + off); |
26e41594 AM |
2389 | h->got.offset |= 1; |
2390 | } | |
a63cc5f7 AK |
2391 | |
2392 | if ((h->def_regular | |
0e1862bb | 2393 | && bfd_link_pic (info) |
a63cc5f7 AK |
2394 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
2395 | /* lrl rx,sym@GOTENT -> larl rx, sym */ | |
2396 | && ((r_type == R_390_GOTENT | |
2397 | && (bfd_get_16 (input_bfd, | |
2398 | contents + rel->r_offset - 2) | |
2399 | & 0xff0f) == 0xc40d) | |
2400 | /* ly rx, sym@GOT(r12) -> larl rx, sym */ | |
2401 | || (r_type == R_390_GOT20 | |
2402 | && (bfd_get_32 (input_bfd, | |
2403 | contents + rel->r_offset - 2) | |
2404 | & 0xff00f000) == 0xe300c000 | |
2405 | && bfd_get_8 (input_bfd, | |
2406 | contents + rel->r_offset + 3) == 0x58))) | |
2407 | { | |
2408 | unsigned short new_insn = | |
2409 | (0xc000 | (bfd_get_8 (input_bfd, | |
2410 | contents + rel->r_offset - 1) & 0xf0)); | |
2411 | bfd_put_16 (output_bfd, new_insn, | |
2412 | contents + rel->r_offset - 2); | |
2413 | r_type = R_390_PC32DBL; | |
2414 | rel->r_addend = 2; | |
2415 | howto = elf_howto_table + r_type; | |
2416 | relocation = h->root.u.def.value | |
2417 | + h->root.u.def.section->output_section->vma | |
2418 | + h->root.u.def.section->output_offset; | |
2419 | goto do_relocation; | |
2420 | } | |
26e41594 | 2421 | } |
0451c93c | 2422 | else |
b34976b6 | 2423 | unresolved_reloc = FALSE; |
26e41594 AM |
2424 | } |
2425 | else | |
2426 | { | |
0451c93c MS |
2427 | if (local_got_offsets == NULL) |
2428 | abort (); | |
a85d7ed0 | 2429 | |
26e41594 | 2430 | off = local_got_offsets[r_symndx]; |
a85d7ed0 | 2431 | |
26e41594 AM |
2432 | /* The offset must always be a multiple of 4. We use |
2433 | the least significant bit to record whether we have | |
2434 | already generated the necessary reloc. */ | |
2435 | if ((off & 1) != 0) | |
2436 | off &= ~1; | |
2437 | else | |
2438 | { | |
2439 | bfd_put_32 (output_bfd, relocation, | |
f41345a7 | 2440 | htab->elf.sgot->contents + off); |
a85d7ed0 | 2441 | |
0e1862bb | 2442 | if (bfd_link_pic (info)) |
26e41594 AM |
2443 | { |
2444 | asection *srelgot; | |
2445 | Elf_Internal_Rela outrel; | |
947216bf | 2446 | bfd_byte *loc; |
a85d7ed0 | 2447 | |
f41345a7 | 2448 | srelgot = htab->elf.srelgot; |
0451c93c MS |
2449 | if (srelgot == NULL) |
2450 | abort (); | |
a85d7ed0 | 2451 | |
f41345a7 AK |
2452 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2453 | + htab->elf.sgot->output_offset | |
26e41594 AM |
2454 | + off); |
2455 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
a85d7ed0 | 2456 | outrel.r_addend = relocation; |
947216bf AM |
2457 | loc = srelgot->contents; |
2458 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
26e41594 AM |
2459 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
2460 | } | |
a85d7ed0 | 2461 | |
26e41594 AM |
2462 | local_got_offsets[r_symndx] |= 1; |
2463 | } | |
2464 | } | |
a85d7ed0 | 2465 | |
0451c93c MS |
2466 | if (off >= (bfd_vma) -2) |
2467 | abort (); | |
a85d7ed0 | 2468 | |
470b557a | 2469 | relocation = base_got->output_offset + off; |
befc3abb | 2470 | |
ae9a127f NC |
2471 | /* For @GOTENT the relocation is against the offset between |
2472 | the instruction and the symbols entry in the GOT and not | |
2473 | between the start of the GOT and the symbols entry. We | |
2474 | add the vma of the GOT to get the correct value. */ | |
5236c819 MS |
2475 | if ( r_type == R_390_GOTENT |
2476 | || r_type == R_390_GOTPLTENT) | |
470b557a | 2477 | relocation += base_got->output_section->vma; |
befc3abb | 2478 | |
26e41594 | 2479 | break; |
dc810e39 | 2480 | |
5236c819 | 2481 | case R_390_GOTOFF16: |
26e41594 AM |
2482 | case R_390_GOTOFF32: |
2483 | /* Relocation is relative to the start of the global offset | |
2484 | table. */ | |
2485 | ||
01a53584 AK |
2486 | if (h != NULL |
2487 | && s390_is_ifunc_symbol_p (h) | |
2488 | && h->def_regular | |
2489 | && !bfd_link_executable (info)) | |
2490 | { | |
2491 | relocation = (htab->elf.iplt->output_section->vma | |
2492 | + htab->elf.iplt->output_offset | |
2493 | + h->plt.offset | |
2494 | - htab->elf.sgot->output_section->vma); | |
2495 | goto do_relocation; | |
2496 | } | |
2497 | ||
26e41594 AM |
2498 | /* Note that sgot->output_offset is not involved in this |
2499 | calculation. We always want the start of .got. If we | |
2500 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
2501 | permitted by the ABI, we might have to change this | |
2502 | calculation. */ | |
f41345a7 | 2503 | relocation -= htab->elf.sgot->output_section->vma; |
26e41594 AM |
2504 | break; |
2505 | ||
2506 | case R_390_GOTPC: | |
befc3abb | 2507 | case R_390_GOTPCDBL: |
26e41594 | 2508 | /* Use global offset table as symbol value. */ |
f41345a7 | 2509 | relocation = htab->elf.sgot->output_section->vma; |
b34976b6 | 2510 | unresolved_reloc = FALSE; |
26e41594 | 2511 | break; |
a85d7ed0 | 2512 | |
fb798c50 | 2513 | case R_390_PLT12DBL: |
26e41594 | 2514 | case R_390_PLT16DBL: |
fb798c50 | 2515 | case R_390_PLT24DBL: |
26e41594 AM |
2516 | case R_390_PLT32DBL: |
2517 | case R_390_PLT32: | |
2518 | /* Relocation is to the entry for this symbol in the | |
2519 | procedure linkage table. */ | |
a85d7ed0 | 2520 | |
26e41594 AM |
2521 | /* Resolve a PLT32 reloc against a local symbol directly, |
2522 | without using the procedure linkage table. */ | |
2523 | if (h == NULL) | |
2524 | break; | |
a85d7ed0 | 2525 | |
26e41594 | 2526 | if (h->plt.offset == (bfd_vma) -1 |
470b557a | 2527 | || (htab->elf.splt == NULL && htab->elf.iplt == NULL)) |
26e41594 AM |
2528 | { |
2529 | /* We didn't make a PLT entry for this symbol. This | |
2530 | happens when statically linking PIC code, or when | |
2531 | using -Bsymbolic. */ | |
2532 | break; | |
2533 | } | |
2534 | ||
470b557a AK |
2535 | if (s390_is_ifunc_symbol_p (h)) |
2536 | relocation = (htab->elf.iplt->output_section->vma | |
07d6d2b8 | 2537 | + htab->elf.iplt->output_offset |
470b557a AK |
2538 | + h->plt.offset); |
2539 | else | |
2540 | relocation = (htab->elf.splt->output_section->vma | |
2541 | + htab->elf.splt->output_offset | |
2542 | + h->plt.offset); | |
b34976b6 | 2543 | unresolved_reloc = FALSE; |
26e41594 | 2544 | break; |
a85d7ed0 | 2545 | |
5236c819 MS |
2546 | case R_390_PLTOFF16: |
2547 | case R_390_PLTOFF32: | |
26e41594 AM |
2548 | /* Relocation is to the entry for this symbol in the |
2549 | procedure linkage table relative to the start of the GOT. */ | |
5236c819 MS |
2550 | |
2551 | /* For local symbols or if we didn't make a PLT entry for | |
2552 | this symbol resolve the symbol directly. */ | |
31db78f6 | 2553 | if (h == NULL |
5236c819 | 2554 | || h->plt.offset == (bfd_vma) -1 |
31db78f6 | 2555 | || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h))) |
5236c819 | 2556 | { |
f41345a7 | 2557 | relocation -= htab->elf.sgot->output_section->vma; |
5236c819 MS |
2558 | break; |
2559 | } | |
2560 | ||
470b557a AK |
2561 | if (s390_is_ifunc_symbol_p (h)) |
2562 | relocation = (htab->elf.iplt->output_section->vma | |
2563 | + htab->elf.iplt->output_offset | |
2564 | + h->plt.offset | |
2565 | - htab->elf.sgot->output_section->vma); | |
2566 | else | |
2567 | relocation = (htab->elf.splt->output_section->vma | |
2568 | + htab->elf.splt->output_offset | |
2569 | + h->plt.offset | |
2570 | - htab->elf.sgot->output_section->vma); | |
5236c819 | 2571 | unresolved_reloc = FALSE; |
26e41594 AM |
2572 | break; |
2573 | ||
26e41594 | 2574 | case R_390_PC16: |
fb798c50 | 2575 | case R_390_PC12DBL: |
26e41594 | 2576 | case R_390_PC16DBL: |
fb798c50 | 2577 | case R_390_PC24DBL: |
26e41594 AM |
2578 | case R_390_PC32DBL: |
2579 | case R_390_PC32: | |
99ba5125 AK |
2580 | if (h != NULL |
2581 | && s390_is_ifunc_symbol_p (h) | |
2582 | && h->def_regular | |
2583 | && !bfd_link_executable (info)) | |
2584 | { | |
2585 | /* This will not work our if the function does not | |
2586 | happen to set up the GOT pointer for some other | |
2587 | reason. 31 bit PLT entries require r12 to hold the | |
2588 | GOT pointer. | |
2589 | FIXME: Implement an errorcheck. | |
2590 | NOTE: It will work when brasl is not available | |
2591 | (e.g. with -m31 -march=g5) since a local function | |
2592 | call then does use GOTOFF which implies r12 being set | |
2593 | up. */ | |
2594 | relocation = (htab->elf.iplt->output_section->vma | |
2595 | + htab->elf.iplt->output_offset | |
2596 | + h ->plt.offset); | |
2597 | goto do_relocation; | |
2598 | } | |
1a0670f3 | 2599 | /* Fall through. */ |
99ba5125 AK |
2600 | |
2601 | case R_390_8: | |
2602 | case R_390_16: | |
2603 | case R_390_32: | |
470b557a AK |
2604 | if (h != NULL |
2605 | && s390_is_ifunc_symbol_p (h) | |
2606 | && h->def_regular) | |
2607 | { | |
d7ab4911 | 2608 | if (!bfd_link_pic (info)) |
470b557a AK |
2609 | { |
2610 | /* For a non-shared object STT_GNU_IFUNC symbol must | |
2611 | go through PLT. */ | |
2612 | relocation = (htab->elf.iplt->output_section->vma | |
2613 | + htab->elf.iplt->output_offset | |
2614 | + h ->plt.offset); | |
2615 | goto do_relocation; | |
2616 | } | |
2617 | else | |
2618 | { | |
2619 | /* For shared objects a runtime relocation is needed. */ | |
2620 | ||
2621 | Elf_Internal_Rela outrel; | |
2622 | asection *sreloc; | |
2623 | ||
2624 | /* Need a dynamic relocation to get the real function | |
2625 | address. */ | |
2626 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
2627 | info, | |
2628 | input_section, | |
2629 | rel->r_offset); | |
2630 | if (outrel.r_offset == (bfd_vma) -1 | |
2631 | || outrel.r_offset == (bfd_vma) -2) | |
2632 | abort (); | |
2633 | ||
2634 | outrel.r_offset += (input_section->output_section->vma | |
2635 | + input_section->output_offset); | |
2636 | ||
2637 | if (h->dynindx == -1 | |
2638 | || h->forced_local | |
0e1862bb | 2639 | || bfd_link_executable (info)) |
470b557a AK |
2640 | { |
2641 | /* This symbol is resolved locally. */ | |
2642 | outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE); | |
2643 | outrel.r_addend = (h->root.u.def.value | |
2644 | + h->root.u.def.section->output_section->vma | |
2645 | + h->root.u.def.section->output_offset); | |
2646 | } | |
2647 | else | |
2648 | { | |
2649 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
2650 | outrel.r_addend = 0; | |
2651 | } | |
2652 | ||
2653 | sreloc = htab->elf.irelifunc; | |
2654 | elf_append_rela (output_bfd, sreloc, &outrel); | |
2655 | ||
2656 | /* If this reloc is against an external symbol, we | |
2657 | do not want to fiddle with the addend. Otherwise, | |
2658 | we need to include the symbol value so that it | |
2659 | becomes an addend for the dynamic reloc. For an | |
2660 | internal symbol, we have updated addend. */ | |
2661 | continue; | |
2662 | } | |
2663 | } | |
2664 | ||
b1e24c02 | 2665 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
2666 | break; |
2667 | ||
0e1862bb | 2668 | if ((bfd_link_pic (info) |
82058a73 | 2669 | && (h == NULL |
b27bb18f L |
2670 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2671 | && !resolved_to_zero) | |
82058a73 | 2672 | || h->root.type != bfd_link_hash_undefweak) |
0451c93c | 2673 | && ((r_type != R_390_PC16 |
fb798c50 | 2674 | && r_type != R_390_PC12DBL |
0451c93c | 2675 | && r_type != R_390_PC16DBL |
fb798c50 | 2676 | && r_type != R_390_PC24DBL |
befc3abb | 2677 | && r_type != R_390_PC32DBL |
0451c93c | 2678 | && r_type != R_390_PC32) |
8c21ca21 | 2679 | || !SYMBOL_CALLS_LOCAL (info, h))) |
64285810 | 2680 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 2681 | && !bfd_link_pic (info) |
0451c93c MS |
2682 | && h != NULL |
2683 | && h->dynindx != -1 | |
f5385ebf AM |
2684 | && !h->non_got_ref |
2685 | && ((h->def_dynamic | |
2686 | && !h->def_regular) | |
0451c93c MS |
2687 | || h->root.type == bfd_link_hash_undefweak |
2688 | || h->root.type == bfd_link_hash_undefined))) | |
26e41594 AM |
2689 | { |
2690 | Elf_Internal_Rela outrel; | |
2691 | bfd_boolean skip, relocate; | |
0451c93c | 2692 | asection *sreloc; |
947216bf | 2693 | bfd_byte *loc; |
ec338859 | 2694 | |
0451c93c MS |
2695 | /* When generating a shared object, these relocations |
2696 | are copied into the output file to be resolved at run | |
2697 | time. */ | |
ec338859 | 2698 | |
26e41594 AM |
2699 | skip = FALSE; |
2700 | relocate = FALSE; | |
ec338859 | 2701 | |
c629eae0 JJ |
2702 | outrel.r_offset = |
2703 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2704 | rel->r_offset); | |
2705 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2706 | skip = TRUE; |
0bb2d96a | 2707 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2708 | skip = TRUE, relocate = TRUE; |
26e41594 AM |
2709 | outrel.r_offset += (input_section->output_section->vma |
2710 | + input_section->output_offset); | |
ec338859 | 2711 | |
26e41594 | 2712 | if (skip) |
0bb2d96a | 2713 | memset (&outrel, 0, sizeof outrel); |
26e41594 | 2714 | else if (h != NULL |
0451c93c MS |
2715 | && h->dynindx != -1 |
2716 | && (r_type == R_390_PC16 | |
fb798c50 | 2717 | || r_type == R_390_PC12DBL |
0451c93c | 2718 | || r_type == R_390_PC16DBL |
fb798c50 | 2719 | || r_type == R_390_PC24DBL |
befc3abb | 2720 | || r_type == R_390_PC32DBL |
0451c93c | 2721 | || r_type == R_390_PC32 |
0e1862bb | 2722 | || !bfd_link_pic (info) |
8c21ca21 | 2723 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 2724 | || !h->def_regular)) |
26e41594 AM |
2725 | { |
2726 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
27018c3f | 2727 | outrel.r_addend = rel->r_addend; |
26e41594 AM |
2728 | } |
2729 | else | |
2730 | { | |
0451c93c | 2731 | /* This symbol is local, or marked to become local. */ |
90ced0dd | 2732 | outrel.r_addend = relocation + rel->r_addend; |
b5727d75 MS |
2733 | if (r_type == R_390_32) |
2734 | { | |
2735 | relocate = TRUE; | |
2736 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
b5727d75 MS |
2737 | } |
2738 | else | |
2739 | { | |
2740 | long sindx; | |
2741 | ||
90ced0dd | 2742 | if (bfd_is_abs_section (sec)) |
b5727d75 MS |
2743 | sindx = 0; |
2744 | else if (sec == NULL || sec->owner == NULL) | |
2745 | { | |
2746 | bfd_set_error(bfd_error_bad_value); | |
2747 | return FALSE; | |
2748 | } | |
2749 | else | |
2750 | { | |
2751 | asection *osec; | |
2752 | ||
2753 | osec = sec->output_section; | |
2754 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
2755 | if (sindx == 0) |
2756 | { | |
2757 | osec = htab->elf.text_index_section; | |
2758 | sindx = elf_section_data (osec)->dynindx; | |
2759 | } | |
2760 | BFD_ASSERT (sindx != 0); | |
90ced0dd MS |
2761 | |
2762 | /* We are turning this relocation into one | |
2763 | against a section symbol, so subtract out | |
2764 | the output section's address but not the | |
2765 | offset of the input section in the output | |
2766 | section. */ | |
90ced0dd | 2767 | outrel.r_addend -= osec->vma; |
b5727d75 MS |
2768 | } |
2769 | outrel.r_info = ELF32_R_INFO (sindx, r_type); | |
b5727d75 | 2770 | } |
26e41594 | 2771 | } |
ec338859 | 2772 | |
0451c93c MS |
2773 | sreloc = elf_section_data (input_section)->sreloc; |
2774 | if (sreloc == NULL) | |
2775 | abort (); | |
ec338859 | 2776 | |
947216bf AM |
2777 | loc = sreloc->contents; |
2778 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 2779 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
ec338859 | 2780 | |
26e41594 AM |
2781 | /* If this reloc is against an external symbol, we do |
2782 | not want to fiddle with the addend. Otherwise, we | |
2783 | need to include the symbol value so that it becomes | |
2784 | an addend for the dynamic reloc. */ | |
2785 | if (! relocate) | |
2786 | continue; | |
2787 | } | |
0451c93c | 2788 | break; |
ec338859 | 2789 | |
69fc87f1 MS |
2790 | /* Relocations for tls literal pool entries. */ |
2791 | case R_390_TLS_IE32: | |
0e1862bb | 2792 | if (bfd_link_pic (info)) |
69fc87f1 MS |
2793 | { |
2794 | Elf_Internal_Rela outrel; | |
2795 | asection *sreloc; | |
2796 | bfd_byte *loc; | |
2797 | ||
2798 | outrel.r_offset = rel->r_offset | |
2799 | + input_section->output_section->vma | |
2800 | + input_section->output_offset; | |
2801 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
2802 | sreloc = elf_section_data (input_section)->sreloc; | |
2803 | if (sreloc == NULL) | |
2804 | abort (); | |
2805 | loc = sreloc->contents; | |
2806 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
2807 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
2808 | } | |
ae9a127f | 2809 | /* Fall through. */ |
69fc87f1 MS |
2810 | |
2811 | case R_390_TLS_GD32: | |
2812 | case R_390_TLS_GOTIE32: | |
2813 | r_type = elf_s390_tls_transition (info, r_type, h == NULL); | |
2814 | tls_type = GOT_UNKNOWN; | |
2815 | if (h == NULL && local_got_offsets) | |
2816 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
2817 | else if (h != NULL) | |
2818 | { | |
2819 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
0e1862bb L |
2820 | if (!bfd_link_pic (info) |
2821 | && h->dynindx == -1 | |
2822 | && tls_type >= GOT_TLS_IE) | |
69fc87f1 MS |
2823 | r_type = R_390_TLS_LE32; |
2824 | } | |
2825 | if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE) | |
2826 | r_type = R_390_TLS_IE32; | |
2827 | ||
2828 | if (r_type == R_390_TLS_LE32) | |
2829 | { | |
2830 | /* This relocation gets optimized away by the local exec | |
2831 | access optimization. */ | |
2832 | BFD_ASSERT (! unresolved_reloc); | |
2833 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
2834 | contents + rel->r_offset); | |
2835 | continue; | |
2836 | } | |
2837 | ||
f41345a7 | 2838 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2839 | abort (); |
2840 | ||
2841 | if (h != NULL) | |
2842 | off = h->got.offset; | |
2843 | else | |
2844 | { | |
2845 | if (local_got_offsets == NULL) | |
2846 | abort (); | |
2847 | ||
2848 | off = local_got_offsets[r_symndx]; | |
2849 | } | |
2850 | ||
2851 | emit_tls_relocs: | |
2852 | ||
2853 | if ((off & 1) != 0) | |
2854 | off &= ~1; | |
26e41594 | 2855 | else |
69fc87f1 MS |
2856 | { |
2857 | Elf_Internal_Rela outrel; | |
2858 | bfd_byte *loc; | |
2859 | int dr_type, indx; | |
2860 | ||
f41345a7 | 2861 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2862 | abort (); |
2863 | ||
f41345a7 AK |
2864 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2865 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2866 | |
2867 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
2868 | if (r_type == R_390_TLS_GD32) | |
2869 | dr_type = R_390_TLS_DTPMOD; | |
2870 | else | |
2871 | dr_type = R_390_TLS_TPOFF; | |
2872 | if (dr_type == R_390_TLS_TPOFF && indx == 0) | |
2873 | outrel.r_addend = relocation - dtpoff_base (info); | |
2874 | else | |
2875 | outrel.r_addend = 0; | |
2876 | outrel.r_info = ELF32_R_INFO (indx, dr_type); | |
f41345a7 AK |
2877 | loc = htab->elf.srelgot->contents; |
2878 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
2879 | * sizeof (Elf32_External_Rela); |
2880 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
2881 | ||
2882 | if (r_type == R_390_TLS_GD32) | |
2883 | { | |
2884 | if (indx == 0) | |
2885 | { | |
26e41594 | 2886 | BFD_ASSERT (! unresolved_reloc); |
69fc87f1 MS |
2887 | bfd_put_32 (output_bfd, |
2888 | relocation - dtpoff_base (info), | |
f41345a7 | 2889 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2890 | } |
2891 | else | |
2892 | { | |
2893 | outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF); | |
2894 | outrel.r_offset += GOT_ENTRY_SIZE; | |
2895 | outrel.r_addend = 0; | |
f41345a7 | 2896 | htab->elf.srelgot->reloc_count++; |
69fc87f1 MS |
2897 | loc += sizeof (Elf32_External_Rela); |
2898 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
2899 | } | |
2900 | } | |
2901 | ||
2902 | if (h != NULL) | |
2903 | h->got.offset |= 1; | |
2904 | else | |
2905 | local_got_offsets[r_symndx] |= 1; | |
2906 | } | |
2907 | ||
2908 | if (off >= (bfd_vma) -2) | |
2909 | abort (); | |
2910 | if (r_type == ELF32_R_TYPE (rel->r_info)) | |
2911 | { | |
f41345a7 | 2912 | relocation = htab->elf.sgot->output_offset + off; |
69fc87f1 | 2913 | if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT) |
f41345a7 | 2914 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
2915 | unresolved_reloc = FALSE; |
2916 | } | |
2917 | else | |
2918 | { | |
f41345a7 | 2919 | bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off, |
69fc87f1 MS |
2920 | contents + rel->r_offset); |
2921 | continue; | |
2922 | } | |
2923 | break; | |
2924 | ||
2925 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 2926 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
2927 | case R_390_TLS_IEENT: |
2928 | if (h == NULL) | |
2929 | { | |
2930 | if (local_got_offsets == NULL) | |
2931 | abort(); | |
2932 | off = local_got_offsets[r_symndx]; | |
0e1862bb | 2933 | if (bfd_link_pic (info)) |
69fc87f1 MS |
2934 | goto emit_tls_relocs; |
2935 | } | |
2936 | else | |
2937 | { | |
2938 | off = h->got.offset; | |
2939 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
0e1862bb L |
2940 | if (bfd_link_pic (info) |
2941 | || h->dynindx != -1 | |
2942 | || tls_type < GOT_TLS_IE) | |
69fc87f1 MS |
2943 | goto emit_tls_relocs; |
2944 | } | |
2945 | ||
f41345a7 | 2946 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2947 | abort (); |
2948 | ||
2949 | BFD_ASSERT (! unresolved_reloc); | |
2950 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
f41345a7 AK |
2951 | htab->elf.sgot->contents + off); |
2952 | relocation = htab->elf.sgot->output_offset + off; | |
69fc87f1 | 2953 | if (r_type == R_390_TLS_IEENT) |
f41345a7 | 2954 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
2955 | unresolved_reloc = FALSE; |
2956 | break; | |
2957 | ||
2958 | case R_390_TLS_LDM32: | |
0e1862bb | 2959 | if (! bfd_link_pic (info)) |
69fc87f1 MS |
2960 | /* The literal pool entry this relocation refers to gets ignored |
2961 | by the optimized code of the local exec model. Do nothing | |
2962 | and the value will turn out zero. */ | |
2963 | continue; | |
2964 | ||
f41345a7 | 2965 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2966 | abort (); |
2967 | ||
2968 | off = htab->tls_ldm_got.offset; | |
2969 | if (off & 1) | |
2970 | off &= ~1; | |
2971 | else | |
2972 | { | |
2973 | Elf_Internal_Rela outrel; | |
2974 | bfd_byte *loc; | |
2975 | ||
f41345a7 | 2976 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2977 | abort (); |
2978 | ||
f41345a7 AK |
2979 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2980 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2981 | |
2982 | bfd_put_32 (output_bfd, 0, | |
f41345a7 | 2983 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2984 | outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD); |
2985 | outrel.r_addend = 0; | |
f41345a7 AK |
2986 | loc = htab->elf.srelgot->contents; |
2987 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
2988 | * sizeof (Elf32_External_Rela); |
2989 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
2990 | htab->tls_ldm_got.offset |= 1; | |
2991 | } | |
f41345a7 | 2992 | relocation = htab->elf.sgot->output_offset + off; |
26e41594 | 2993 | unresolved_reloc = FALSE; |
69fc87f1 MS |
2994 | break; |
2995 | ||
2996 | case R_390_TLS_LE32: | |
3cbc1e5e | 2997 | if (bfd_link_dll (info)) |
69fc87f1 MS |
2998 | { |
2999 | /* Linking a shared library with non-fpic code requires | |
3000 | a R_390_TLS_TPOFF relocation. */ | |
3001 | Elf_Internal_Rela outrel; | |
3002 | asection *sreloc; | |
3003 | bfd_byte *loc; | |
3004 | int indx; | |
3005 | ||
3006 | outrel.r_offset = rel->r_offset | |
3007 | + input_section->output_section->vma | |
3008 | + input_section->output_offset; | |
3009 | if (h != NULL && h->dynindx != -1) | |
3010 | indx = h->dynindx; | |
3011 | else | |
3012 | indx = 0; | |
3013 | outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF); | |
3014 | if (indx == 0) | |
3015 | outrel.r_addend = relocation - dtpoff_base (info); | |
3016 | else | |
3017 | outrel.r_addend = 0; | |
3018 | sreloc = elf_section_data (input_section)->sreloc; | |
3019 | if (sreloc == NULL) | |
3020 | abort (); | |
3021 | loc = sreloc->contents; | |
3022 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
3023 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
3024 | } | |
3025 | else | |
3026 | { | |
3027 | BFD_ASSERT (! unresolved_reloc); | |
3028 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
3029 | contents + rel->r_offset); | |
3030 | } | |
3031 | continue; | |
3032 | ||
3033 | case R_390_TLS_LDO32: | |
0e1862bb | 3034 | if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING)) |
69fc87f1 MS |
3035 | relocation -= dtpoff_base (info); |
3036 | else | |
3037 | /* When converting LDO to LE, we must negate. */ | |
3038 | relocation = -tpoff (info, relocation); | |
3039 | break; | |
3040 | ||
3041 | /* Relocations for tls instructions. */ | |
3042 | case R_390_TLS_LOAD: | |
3043 | case R_390_TLS_GDCALL: | |
3044 | case R_390_TLS_LDCALL: | |
3045 | tls_type = GOT_UNKNOWN; | |
3046 | if (h == NULL && local_got_offsets) | |
3047 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
3048 | else if (h != NULL) | |
3049 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
3050 | ||
3051 | if (tls_type == GOT_TLS_GD) | |
3052 | continue; | |
3053 | ||
3054 | if (r_type == R_390_TLS_LOAD) | |
3055 | { | |
0e1862bb | 3056 | if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) |
69fc87f1 MS |
3057 | { |
3058 | /* IE->LE transition. Four valid cases: | |
3059 | l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 | |
3060 | l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 | |
3061 | l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 | |
3062 | l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
3063 | unsigned int insn, ry; | |
3064 | ||
3065 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
69fc87f1 MS |
3066 | if ((insn & 0xff00f000) == 0x58000000) |
3067 | /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */ | |
3068 | ry = (insn & 0x000f0000); | |
3069 | else if ((insn & 0xff0f0000) == 0x58000000) | |
3070 | /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
3071 | ry = (insn & 0x0000f000) << 4; | |
3072 | else if ((insn & 0xff00f000) == 0x5800c000) | |
3073 | /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */ | |
3074 | ry = (insn & 0x000f0000); | |
3075 | else if ((insn & 0xff0f0000) == 0x580c0000) | |
3076 | /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
3077 | ry = (insn & 0x0000f000) << 4; | |
3078 | else | |
3704e358 AK |
3079 | { |
3080 | invalid_tls_insn (input_bfd, input_section, rel); | |
3081 | return FALSE; | |
3082 | } | |
69fc87f1 MS |
3083 | insn = 0x18000700 | (insn & 0x00f00000) | ry; |
3084 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
3085 | } | |
3086 | } | |
3087 | else if (r_type == R_390_TLS_GDCALL) | |
3088 | { | |
3089 | unsigned int insn; | |
3090 | ||
3091 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
77df2968 | 3092 | if ((insn & 0xff000fff) != 0x4d000000 && |
d0ddfe27 AK |
3093 | (insn & 0xffff0000) != 0xc0e50000 && |
3094 | (insn & 0xff000000) != 0x0d000000) | |
3704e358 AK |
3095 | { |
3096 | invalid_tls_insn (input_bfd, input_section, rel); | |
3097 | return FALSE; | |
3098 | } | |
0e1862bb | 3099 | if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) |
77df2968 | 3100 | { |
d0ddfe27 AK |
3101 | if ((insn & 0xff000000) == 0x0d000000) |
3102 | { | |
3103 | /* GD->LE transition. | |
3104 | basr rx, ry -> nopr r7 */ | |
3105 | insn = 0x07070000 | (insn & 0xffff); | |
3106 | } | |
3107 | else if ((insn & 0xff000000) == 0x4d000000) | |
77df2968 MS |
3108 | { |
3109 | /* GD->LE transition. | |
3110 | bas %r14,0(%rx,%r13) -> bc 0,0 */ | |
3111 | insn = 0x47000000; | |
3112 | } | |
3113 | else | |
3114 | { | |
3115 | /* GD->LE transition. | |
d0ddfe27 | 3116 | brasl %r14,_tls_get_offset@plt -> brcl 0,. */ |
77df2968 MS |
3117 | insn = 0xc0040000; |
3118 | bfd_put_16 (output_bfd, 0x0000, | |
3119 | contents + rel->r_offset + 4); | |
3120 | } | |
3121 | } | |
69fc87f1 | 3122 | else |
77df2968 | 3123 | { |
d0ddfe27 AK |
3124 | /* If basr is used in the pic case to invoke |
3125 | _tls_get_offset, something went wrong before. */ | |
3126 | if ((insn & 0xff000000) == 0x0d000000) | |
3704e358 AK |
3127 | { |
3128 | invalid_tls_insn (input_bfd, input_section, rel); | |
3129 | return FALSE; | |
3130 | } | |
d0ddfe27 | 3131 | |
77df2968 MS |
3132 | if ((insn & 0xff000000) == 0x4d000000) |
3133 | { | |
3134 | /* GD->IE transition. | |
3135 | bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */ | |
3136 | insn = 0x5822c000; | |
3137 | } | |
3138 | else | |
3139 | { | |
3140 | /* GD->IE transition. | |
3141 | brasl %r14,__tls_get_addr@plt -> | |
07d6d2b8 | 3142 | l %r2,0(%r2,%r12) ; bcr 0,0 */ |
77df2968 MS |
3143 | insn = 0x5822c000; |
3144 | bfd_put_16 (output_bfd, 0x0700, | |
3145 | contents + rel->r_offset + 4); | |
3146 | } | |
3147 | } | |
69fc87f1 MS |
3148 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
3149 | } | |
3150 | else if (r_type == R_390_TLS_LDCALL) | |
3151 | { | |
0e1862bb | 3152 | if (!bfd_link_pic (info)) |
69fc87f1 MS |
3153 | { |
3154 | unsigned int insn; | |
3155 | ||
3156 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
77df2968 | 3157 | if ((insn & 0xff000fff) != 0x4d000000 && |
d0ddfe27 AK |
3158 | (insn & 0xffff0000) != 0xc0e50000 && |
3159 | (insn & 0xff000000) != 0x0d000000) | |
3704e358 AK |
3160 | { |
3161 | invalid_tls_insn (input_bfd, input_section, rel); | |
3162 | return FALSE; | |
3163 | } | |
d0ddfe27 AK |
3164 | |
3165 | if ((insn & 0xff000000) == 0x0d000000) | |
3166 | { | |
3167 | /* LD->LE transition. | |
3168 | basr rx, ry -> nopr r7 */ | |
3169 | insn = 0x07070000 | (insn & 0xffff); | |
3170 | } | |
3171 | else if ((insn & 0xff000000) == 0x4d000000) | |
77df2968 MS |
3172 | { |
3173 | /* LD->LE transition. | |
3174 | bas %r14,0(%rx,%r13) -> bc 0,0 */ | |
3175 | insn = 0x47000000; | |
3176 | } | |
3177 | else | |
3178 | { | |
3179 | /* LD->LE transition. | |
d0ddfe27 | 3180 | brasl %r14,__tls_get_offset@plt -> brcl 0,. */ |
77df2968 MS |
3181 | insn = 0xc0040000; |
3182 | bfd_put_16 (output_bfd, 0x0000, | |
3183 | contents + rel->r_offset + 4); | |
3184 | } | |
69fc87f1 MS |
3185 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
3186 | } | |
3187 | } | |
3188 | continue; | |
3189 | ||
0451c93c MS |
3190 | default: |
3191 | break; | |
3192 | } | |
ec338859 | 3193 | |
239e1f3a AM |
3194 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3195 | because such sections are not SEC_ALLOC and thus ld.so will | |
3196 | not process them. */ | |
0451c93c | 3197 | if (unresolved_reloc |
239e1f3a | 3198 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
3199 | && h->def_dynamic) |
3200 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
3201 | rel->r_offset) != (bfd_vma) -1) | |
4eca0228 | 3202 | _bfd_error_handler |
695344c0 | 3203 | /* xgettext:c-format */ |
d42c267e | 3204 | (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
3205 | input_bfd, |
3206 | input_section, | |
d42c267e | 3207 | rel->r_offset, |
843fe662 | 3208 | howto->name, |
0451c93c | 3209 | h->root.root.string); |
ec338859 | 3210 | |
470b557a AK |
3211 | do_relocation: |
3212 | ||
fb798c50 AK |
3213 | /* When applying a 24 bit reloc we need to start one byte |
3214 | earlier. Otherwise the 32 bit get/put bfd operations might | |
3215 | access a byte after the actual section. */ | |
3216 | if (r_type == R_390_PC24DBL | |
3217 | || r_type == R_390_PLT24DBL) | |
3218 | rel->r_offset--; | |
3219 | ||
bd1ea41b MS |
3220 | if (r_type == R_390_20 |
3221 | || r_type == R_390_GOT20 | |
3222 | || r_type == R_390_GOTPLT20 | |
3223 | || r_type == R_390_TLS_GOTIE20) | |
3224 | { | |
3225 | relocation += rel->r_addend; | |
3226 | relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12; | |
3227 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3228 | contents, rel->r_offset, | |
3229 | relocation, 0); | |
3230 | } | |
3231 | else | |
3232 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3233 | contents, rel->r_offset, | |
3234 | relocation, rel->r_addend); | |
ec338859 | 3235 | |
a85d7ed0 NC |
3236 | if (r != bfd_reloc_ok) |
3237 | { | |
0451c93c | 3238 | const char *name; |
ec338859 | 3239 | |
0451c93c MS |
3240 | if (h != NULL) |
3241 | name = h->root.root.string; | |
3242 | else | |
a85d7ed0 | 3243 | { |
0451c93c MS |
3244 | name = bfd_elf_string_from_elf_section (input_bfd, |
3245 | symtab_hdr->sh_link, | |
3246 | sym->st_name); | |
3247 | if (name == NULL) | |
b34976b6 | 3248 | return FALSE; |
0451c93c MS |
3249 | if (*name == '\0') |
3250 | name = bfd_section_name (input_bfd, sec); | |
3251 | } | |
ec338859 | 3252 | |
0451c93c | 3253 | if (r == bfd_reloc_overflow) |
1a72702b AM |
3254 | (*info->callbacks->reloc_overflow) |
3255 | (info, (h ? &h->root : NULL), name, howto->name, | |
3256 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
0451c93c MS |
3257 | else |
3258 | { | |
4eca0228 | 3259 | _bfd_error_handler |
695344c0 | 3260 | /* xgettext:c-format */ |
d42c267e | 3261 | (_("%B(%A+%#Lx): reloc against `%s': error %d"), |
d003868e | 3262 | input_bfd, input_section, |
d42c267e | 3263 | rel->r_offset, name, (int) r); |
b34976b6 | 3264 | return FALSE; |
a85d7ed0 NC |
3265 | } |
3266 | } | |
3267 | } | |
ec338859 | 3268 | |
b34976b6 | 3269 | return TRUE; |
a85d7ed0 NC |
3270 | } |
3271 | ||
470b557a AK |
3272 | /* Generate the PLT slots together with the dynamic relocations needed |
3273 | for IFUNC symbols. */ | |
3274 | ||
3275 | static void | |
3276 | elf_s390_finish_ifunc_symbol (bfd *output_bfd, | |
3277 | struct bfd_link_info *info, | |
3278 | struct elf_link_hash_entry *h, | |
3279 | struct elf_s390_link_hash_table *htab, | |
3280 | bfd_vma iplt_offset, | |
3281 | bfd_vma resolver_address) | |
3282 | { | |
3283 | bfd_vma iplt_index; | |
3284 | bfd_vma got_offset; | |
3285 | bfd_vma igotiplt_offset; | |
3286 | Elf_Internal_Rela rela; | |
3287 | bfd_byte *loc; | |
3288 | asection *plt, *gotplt, *relplt; | |
3289 | bfd_vma relative_offset; | |
3290 | ||
3291 | if (htab->elf.iplt == NULL | |
3292 | || htab->elf.igotplt == NULL | |
3293 | || htab->elf.irelplt == NULL) | |
3294 | abort (); | |
3295 | ||
3296 | gotplt = htab->elf.igotplt; | |
3297 | relplt = htab->elf.irelplt; | |
3298 | ||
3299 | /* Index of the PLT slot within iplt section. */ | |
3300 | iplt_index = iplt_offset / PLT_ENTRY_SIZE; | |
3301 | plt = htab->elf.iplt; | |
3302 | /* Offset into the igot.plt section. */ | |
3303 | igotiplt_offset = iplt_index * GOT_ENTRY_SIZE; | |
3304 | /* Offset into the got section. */ | |
3305 | got_offset = igotiplt_offset + gotplt->output_offset; | |
3306 | ||
3307 | /* S390 uses halfwords for relative branch calc! */ | |
3308 | relative_offset = - (plt->output_offset + | |
3309 | (PLT_ENTRY_SIZE * iplt_index) + 18) / 2; | |
ceada896 AA |
3310 | /* If offset is > 32768, branch to a previous branch |
3311 | 390 can only handle +-64 K jumps. */ | |
470b557a AK |
3312 | if ( -32768 > (int) relative_offset ) |
3313 | relative_offset | |
3314 | = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2); | |
3315 | ||
3316 | /* Fill in the entry in the procedure linkage table. */ | |
0e1862bb | 3317 | if (!bfd_link_pic (info)) |
470b557a AK |
3318 | { |
3319 | memcpy (plt->contents + iplt_offset, elf_s390_plt_entry, | |
3320 | PLT_ENTRY_SIZE); | |
3321 | ||
3322 | /* Adjust jump to the first plt entry. */ | |
3323 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3324 | plt->contents + iplt_offset + 20); | |
3325 | ||
3326 | /* Push the GOT offset field. */ | |
3327 | bfd_put_32 (output_bfd, | |
3328 | (gotplt->output_section->vma | |
3329 | + got_offset), | |
3330 | plt->contents + iplt_offset + 24); | |
3331 | } | |
3332 | else if (got_offset < 4096) | |
3333 | { | |
3334 | /* The GOT offset is small enough to be used directly as | |
3335 | displacement. */ | |
3336 | memcpy (plt->contents + iplt_offset, | |
3337 | elf_s390_plt_pic12_entry, | |
3338 | PLT_ENTRY_SIZE); | |
3339 | ||
3340 | /* Put in the GOT offset as displacement value. The 0xc000 | |
3341 | value comes from the first word of the plt entry. Look | |
3342 | at the elf_s390_plt_pic16_entry content. */ | |
3343 | bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset, | |
3344 | plt->contents + iplt_offset + 2); | |
3345 | ||
3346 | /* Adjust the jump to the first plt entry. */ | |
3347 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3348 | plt->contents + iplt_offset + 20); | |
3349 | } | |
3350 | else if (got_offset < 32768) | |
3351 | { | |
3352 | /* The GOT offset is too big for a displacement but small | |
3353 | enough to be a signed 16 bit immediate value as it can be | |
3354 | used in an lhi instruction. */ | |
3355 | memcpy (plt->contents + iplt_offset, | |
3356 | elf_s390_plt_pic16_entry, | |
3357 | PLT_ENTRY_SIZE); | |
3358 | ||
3359 | /* Put in the GOT offset for the lhi instruction. */ | |
3360 | bfd_put_16 (output_bfd, (bfd_vma)got_offset, | |
3361 | plt->contents + iplt_offset + 2); | |
3362 | ||
3363 | /* Adjust the jump to the first plt entry. */ | |
3364 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3365 | plt->contents + iplt_offset + 20); | |
3366 | } | |
3367 | else | |
3368 | { | |
3369 | memcpy (plt->contents + iplt_offset, | |
3370 | elf_s390_plt_pic_entry, | |
3371 | PLT_ENTRY_SIZE); | |
3372 | ||
3373 | /* Adjust the jump to the first plt entry. */ | |
3374 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3375 | plt->contents + iplt_offset + 20); | |
3376 | ||
3377 | /* Push the GOT offset field. */ | |
3378 | bfd_put_32 (output_bfd, got_offset, | |
3379 | plt->contents + iplt_offset + 24); | |
3380 | } | |
3381 | /* Insert offset into reloc. table here. */ | |
3382 | bfd_put_32 (output_bfd, relplt->output_offset + | |
3383 | iplt_index * RELA_ENTRY_SIZE, | |
3384 | plt->contents + iplt_offset + 28); | |
3385 | ||
3386 | /* Fill in the entry in the global offset table. | |
3387 | Points to instruction after GOT offset. */ | |
3388 | bfd_put_32 (output_bfd, | |
3389 | (plt->output_section->vma | |
3390 | + plt->output_offset | |
3391 | + iplt_offset | |
3392 | + 12), | |
3393 | gotplt->contents + igotiplt_offset); | |
3394 | ||
3395 | /* Fill in the entry in the .rela.plt section. */ | |
3396 | rela.r_offset = gotplt->output_section->vma + got_offset; | |
3397 | ||
3398 | if (!h | |
3399 | || h->dynindx == -1 | |
0e1862bb | 3400 | || ((bfd_link_executable (info) |
470b557a AK |
3401 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
3402 | && h->def_regular)) | |
3403 | { | |
3404 | /* The symbol can be locally resolved. */ | |
3405 | rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE); | |
3406 | rela.r_addend = resolver_address; | |
3407 | } | |
3408 | else | |
3409 | { | |
3410 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3411 | rela.r_addend = 0; | |
3412 | } | |
3413 | ||
3414 | loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE; | |
3415 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
3416 | } | |
3417 | ||
a85d7ed0 NC |
3418 | /* Finish up dynamic symbol handling. We set the contents of various |
3419 | dynamic sections here. */ | |
3420 | ||
b34976b6 | 3421 | static bfd_boolean |
2c3fc389 NC |
3422 | elf_s390_finish_dynamic_symbol (bfd *output_bfd, |
3423 | struct bfd_link_info *info, | |
3424 | struct elf_link_hash_entry *h, | |
3425 | Elf_Internal_Sym *sym) | |
a85d7ed0 | 3426 | { |
0451c93c | 3427 | struct elf_s390_link_hash_table *htab; |
470b557a | 3428 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h; |
ec338859 | 3429 | |
0451c93c | 3430 | htab = elf_s390_hash_table (info); |
ec338859 | 3431 | |
a85d7ed0 NC |
3432 | if (h->plt.offset != (bfd_vma) -1) |
3433 | { | |
0451c93c MS |
3434 | bfd_vma plt_index; |
3435 | bfd_vma got_offset; | |
a85d7ed0 | 3436 | Elf_Internal_Rela rela; |
947216bf | 3437 | bfd_byte *loc; |
a85d7ed0 | 3438 | bfd_vma relative_offset; |
ec338859 | 3439 | |
a85d7ed0 | 3440 | /* This symbol has an entry in the procedure linkage table. Set |
26e41594 | 3441 | it up. */ |
0a511368 | 3442 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) |
0451c93c | 3443 | { |
0a511368 AK |
3444 | elf_s390_finish_ifunc_symbol (output_bfd, info, h, |
3445 | htab, h->plt.offset, | |
3446 | eh->ifunc_resolver_address + | |
3447 | eh->ifunc_resolver_section->output_offset + | |
3448 | eh->ifunc_resolver_section->output_section->vma); | |
3449 | /* Do not return yet. Handling of explicit GOT slots of | |
3450 | IFUNC symbols is below. */ | |
0451c93c | 3451 | } |
a85d7ed0 | 3452 | else |
0451c93c | 3453 | { |
470b557a AK |
3454 | if (h->dynindx == -1 |
3455 | || htab->elf.splt == NULL | |
3456 | || htab->elf.sgotplt == NULL | |
3457 | || htab->elf.srelplt == NULL) | |
3458 | abort (); | |
9aa17453 | 3459 | |
470b557a AK |
3460 | /* Calc. index no. |
3461 | Current offset - size first entry / entry size. */ | |
3462 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
9aa17453 | 3463 | |
470b557a AK |
3464 | /* Offset in GOT is PLT index plus GOT headers(3) times 4, |
3465 | addr & GOT addr. */ | |
3466 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
a85d7ed0 | 3467 | |
470b557a AK |
3468 | /* S390 uses halfwords for relative branch calc! */ |
3469 | relative_offset = - ((PLT_FIRST_ENTRY_SIZE + | |
3470 | (PLT_ENTRY_SIZE * plt_index) + 18) / 2); | |
3471 | /* If offset is > 32768, branch to a previous branch | |
3472 | 390 can only handle +-64 K jumps. */ | |
3473 | if ( -32768 > (int) relative_offset ) | |
3474 | relative_offset | |
3475 | = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2); | |
ec338859 | 3476 | |
470b557a | 3477 | /* Fill in the entry in the procedure linkage table. */ |
0e1862bb | 3478 | if (!bfd_link_pic (info)) |
470b557a AK |
3479 | { |
3480 | memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry, | |
3481 | PLT_ENTRY_SIZE); | |
3482 | ||
3483 | /* Adjust jump to the first plt entry. */ | |
3484 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3485 | htab->elf.splt->contents + h->plt.offset + 20); | |
3486 | ||
3487 | /* Push the GOT offset field. */ | |
3488 | bfd_put_32 (output_bfd, | |
3489 | (htab->elf.sgotplt->output_section->vma | |
3490 | + htab->elf.sgotplt->output_offset | |
3491 | + got_offset), | |
3492 | htab->elf.splt->contents + h->plt.offset + 24); | |
3493 | } | |
3494 | else if (got_offset < 4096) | |
3495 | { | |
3496 | /* The GOT offset is small enough to be used directly as | |
3497 | displacement. */ | |
3498 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3499 | elf_s390_plt_pic12_entry, | |
3500 | PLT_ENTRY_SIZE); | |
3501 | ||
3502 | /* Put in the GOT offset as displacement value. The 0xc000 | |
3503 | value comes from the first word of the plt entry. Look | |
3b67f094 | 3504 | at the elf_s390_plt_pic12_entry content. */ |
470b557a AK |
3505 | bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset, |
3506 | htab->elf.splt->contents + h->plt.offset + 2); | |
3507 | ||
3508 | /* Adjust the jump to the first plt entry. */ | |
3509 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3510 | htab->elf.splt->contents + h->plt.offset + 20); | |
3511 | } | |
3512 | else if (got_offset < 32768) | |
3513 | { | |
3514 | /* The GOT offset is too big for a displacement but small | |
3515 | enough to be a signed 16 bit immediate value as it can be | |
3516 | used in an lhi instruction. */ | |
3517 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3518 | elf_s390_plt_pic16_entry, | |
3519 | PLT_ENTRY_SIZE); | |
3520 | ||
3521 | /* Put in the GOT offset for the lhi instruction. */ | |
3522 | bfd_put_16 (output_bfd, (bfd_vma)got_offset, | |
3523 | htab->elf.splt->contents + h->plt.offset + 2); | |
3524 | ||
3525 | /* Adjust the jump to the first plt entry. */ | |
3526 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3527 | htab->elf.splt->contents + h->plt.offset + 20); | |
3528 | } | |
3529 | else | |
3530 | { | |
3531 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3532 | elf_s390_plt_pic_entry, | |
3533 | PLT_ENTRY_SIZE); | |
3534 | ||
3535 | /* Adjust the jump to the first plt entry. */ | |
3536 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3537 | htab->elf.splt->contents + h->plt.offset + 20); | |
3538 | ||
3539 | /* Push the GOT offset field. */ | |
3540 | bfd_put_32 (output_bfd, got_offset, | |
3541 | htab->elf.splt->contents + h->plt.offset + 24); | |
3542 | } | |
3543 | /* Insert offset into reloc. table here. */ | |
3544 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
3545 | htab->elf.splt->contents + h->plt.offset + 28); | |
3546 | ||
3547 | /* Fill in the entry in the global offset table. | |
3548 | Points to instruction after GOT offset. */ | |
3549 | bfd_put_32 (output_bfd, | |
3550 | (htab->elf.splt->output_section->vma | |
3551 | + htab->elf.splt->output_offset | |
3552 | + h->plt.offset | |
3553 | + 12), | |
3554 | htab->elf.sgotplt->contents + got_offset); | |
3555 | ||
3556 | /* Fill in the entry in the .rela.plt section. */ | |
3557 | rela.r_offset = (htab->elf.sgotplt->output_section->vma | |
3558 | + htab->elf.sgotplt->output_offset | |
3559 | + got_offset); | |
3560 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3561 | rela.r_addend = 0; | |
3562 | loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela); | |
3563 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
3564 | ||
3565 | if (!h->def_regular) | |
3566 | { | |
3567 | /* Mark the symbol as undefined, rather than as defined in | |
3568 | the .plt section. Leave the value alone. This is a clue | |
3569 | for the dynamic linker, to make function pointer | |
3570 | comparisons work between an application and shared | |
3571 | library. */ | |
3572 | sym->st_shndx = SHN_UNDEF; | |
3573 | } | |
a85d7ed0 NC |
3574 | } |
3575 | } | |
ec338859 | 3576 | |
69fc87f1 MS |
3577 | if (h->got.offset != (bfd_vma) -1 |
3578 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD | |
3579 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE | |
3580 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT) | |
a85d7ed0 | 3581 | { |
a85d7ed0 | 3582 | Elf_Internal_Rela rela; |
947216bf | 3583 | bfd_byte *loc; |
a85d7ed0 NC |
3584 | |
3585 | /* This symbol has an entry in the global offset table. Set it | |
26e41594 | 3586 | up. */ |
a85d7ed0 | 3587 | |
f41345a7 | 3588 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
0451c93c | 3589 | abort (); |
a85d7ed0 | 3590 | |
f41345a7 AK |
3591 | rela.r_offset = (htab->elf.sgot->output_section->vma |
3592 | + htab->elf.sgot->output_offset | |
dc810e39 | 3593 | + (h->got.offset &~ (bfd_vma) 1)); |
a85d7ed0 NC |
3594 | |
3595 | /* If this is a static link, or it is a -Bsymbolic link and the | |
3596 | symbol is defined locally or was forced to be local because | |
3597 | of a version file, we just want to emit a RELATIVE reloc. | |
3598 | The entry in the global offset table will already have been | |
3599 | initialized in the relocate_section function. */ | |
470b557a AK |
3600 | if (h->def_regular && s390_is_ifunc_symbol_p (h)) |
3601 | { | |
0e1862bb | 3602 | if (bfd_link_pic (info)) |
470b557a AK |
3603 | { |
3604 | /* An explicit GOT slot usage needs GLOB_DAT. If the | |
3605 | symbol references local the implicit got.iplt slot | |
3606 | will be used and the IRELATIVE reloc has been created | |
3607 | above. */ | |
3608 | goto do_glob_dat; | |
3609 | } | |
3610 | else | |
3611 | { | |
3612 | /* For non-shared objects explicit GOT slots must be | |
3613 | filled with the PLT slot address for pointer | |
3614 | equality reasons. */ | |
3615 | bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma | |
3616 | + htab->elf.iplt->output_offset | |
3617 | + h->plt.offset), | |
3618 | htab->elf.sgot->contents + h->got.offset); | |
3619 | return TRUE; | |
3620 | } | |
3621 | } | |
0e1862bb | 3622 | else if (bfd_link_pic (info) |
ceada896 | 3623 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
0451c93c | 3624 | { |
470b557a AK |
3625 | /* If this is a static link, or it is a -Bsymbolic link and |
3626 | the symbol is defined locally or was forced to be local | |
3627 | because of a version file, we just want to emit a | |
3628 | RELATIVE reloc. The entry in the global offset table | |
3629 | will already have been initialized in the | |
3630 | relocate_section function. */ | |
8170f769 | 3631 | if (!(h->def_regular || ELF_COMMON_DEF_P (h))) |
8c21ca21 | 3632 | return FALSE; |
0451c93c MS |
3633 | BFD_ASSERT((h->got.offset & 1) != 0); |
3634 | rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
3635 | rela.r_addend = (h->root.u.def.value | |
26e41594 AM |
3636 | + h->root.u.def.section->output_section->vma |
3637 | + h->root.u.def.section->output_offset); | |
3638 | } | |
a85d7ed0 NC |
3639 | else |
3640 | { | |
3641 | BFD_ASSERT((h->got.offset & 1) == 0); | |
470b557a | 3642 | do_glob_dat: |
f41345a7 | 3643 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset); |
a85d7ed0 | 3644 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT); |
26e41594 AM |
3645 | rela.r_addend = 0; |
3646 | } | |
a85d7ed0 | 3647 | |
f41345a7 AK |
3648 | loc = htab->elf.srelgot->contents; |
3649 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 3650 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3651 | } |
3652 | ||
f5385ebf | 3653 | if (h->needs_copy) |
a85d7ed0 | 3654 | { |
a85d7ed0 | 3655 | Elf_Internal_Rela rela; |
5474d94f | 3656 | asection *s; |
947216bf | 3657 | bfd_byte *loc; |
a85d7ed0 NC |
3658 | |
3659 | /* This symbols needs a copy reloc. Set it up. */ | |
3660 | ||
0451c93c MS |
3661 | if (h->dynindx == -1 |
3662 | || (h->root.type != bfd_link_hash_defined | |
3663 | && h->root.type != bfd_link_hash_defweak) | |
5474d94f AM |
3664 | || htab->elf.srelbss == NULL |
3665 | || htab->elf.sreldynrelro == NULL) | |
0451c93c | 3666 | abort (); |
a85d7ed0 NC |
3667 | |
3668 | rela.r_offset = (h->root.u.def.value | |
3669 | + h->root.u.def.section->output_section->vma | |
3670 | + h->root.u.def.section->output_offset); | |
3671 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY); | |
3672 | rela.r_addend = 0; | |
afbf7e8e | 3673 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
3674 | s = htab->elf.sreldynrelro; |
3675 | else | |
3676 | s = htab->elf.srelbss; | |
3677 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 3678 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3679 | } |
3680 | ||
3681 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 3682 | if (h == htab->elf.hdynamic |
22edb2f1 RS |
3683 | || h == htab->elf.hgot |
3684 | || h == htab->elf.hplt) | |
a85d7ed0 NC |
3685 | sym->st_shndx = SHN_ABS; |
3686 | ||
b34976b6 | 3687 | return TRUE; |
a85d7ed0 NC |
3688 | } |
3689 | ||
0451c93c MS |
3690 | /* Used to decide how to sort relocs in an optimal manner for the |
3691 | dynamic linker, before writing them out. */ | |
3692 | ||
3693 | static enum elf_reloc_type_class | |
7e612e98 AM |
3694 | elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
3695 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
3696 | const Elf_Internal_Rela *rela) | |
0451c93c | 3697 | { |
0f042c67 AK |
3698 | bfd *abfd = info->output_bfd; |
3699 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3700 | struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info); | |
3701 | unsigned long r_symndx = ELF32_R_SYM (rela->r_info); | |
3702 | Elf_Internal_Sym sym; | |
3703 | ||
3704 | if (htab->elf.dynsym == NULL | |
3705 | || !bed->s->swap_symbol_in (abfd, | |
3706 | (htab->elf.dynsym->contents | |
3707 | + r_symndx * bed->s->sizeof_sym), | |
3708 | 0, &sym)) | |
3709 | abort (); | |
3710 | ||
3711 | /* Check relocation against STT_GNU_IFUNC symbol. */ | |
3712 | if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
3713 | return reloc_class_ifunc; | |
3714 | ||
0451c93c MS |
3715 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
3716 | { | |
3717 | case R_390_RELATIVE: | |
3718 | return reloc_class_relative; | |
3719 | case R_390_JMP_SLOT: | |
3720 | return reloc_class_plt; | |
3721 | case R_390_COPY: | |
3722 | return reloc_class_copy; | |
3723 | default: | |
3724 | return reloc_class_normal; | |
3725 | } | |
3726 | } | |
3727 | ||
a85d7ed0 NC |
3728 | /* Finish up the dynamic sections. */ |
3729 | ||
b34976b6 | 3730 | static bfd_boolean |
2c3fc389 NC |
3731 | elf_s390_finish_dynamic_sections (bfd *output_bfd, |
3732 | struct bfd_link_info *info) | |
a85d7ed0 | 3733 | { |
0451c93c | 3734 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
3735 | bfd *dynobj; |
3736 | asection *sdyn; | |
470b557a AK |
3737 | bfd *ibfd; |
3738 | unsigned int i; | |
a85d7ed0 | 3739 | |
0451c93c MS |
3740 | htab = elf_s390_hash_table (info); |
3741 | dynobj = htab->elf.dynobj; | |
3d4d4302 | 3742 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
a85d7ed0 | 3743 | |
0451c93c | 3744 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 | 3745 | { |
a85d7ed0 NC |
3746 | Elf32_External_Dyn *dyncon, *dynconend; |
3747 | ||
f41345a7 | 3748 | if (sdyn == NULL || htab->elf.sgot == NULL) |
0451c93c | 3749 | abort (); |
a85d7ed0 NC |
3750 | |
3751 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 3752 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
a85d7ed0 NC |
3753 | for (; dyncon < dynconend; dyncon++) |
3754 | { | |
3755 | Elf_Internal_Dyn dyn; | |
a85d7ed0 | 3756 | asection *s; |
ec338859 | 3757 | |
a85d7ed0 | 3758 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
ec338859 | 3759 | |
a85d7ed0 NC |
3760 | switch (dyn.d_tag) |
3761 | { | |
3762 | default: | |
0451c93c | 3763 | continue; |
ec338859 | 3764 | |
a85d7ed0 | 3765 | case DT_PLTGOT: |
4ade44b7 AM |
3766 | s = htab->elf.sgotplt; |
3767 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
0451c93c | 3768 | break; |
ec338859 | 3769 | |
a85d7ed0 | 3770 | case DT_JMPREL: |
4ade44b7 AM |
3771 | s = htab->elf.srelplt; |
3772 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
a85d7ed0 NC |
3773 | break; |
3774 | ||
3775 | case DT_PLTRELSZ: | |
79c12fae AK |
3776 | dyn.d_un.d_val = htab->elf.srelplt->size; |
3777 | if (htab->elf.irelplt) | |
3778 | dyn.d_un.d_val += htab->elf.irelplt->size; | |
a85d7ed0 NC |
3779 | break; |
3780 | } | |
0451c93c MS |
3781 | |
3782 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
a85d7ed0 NC |
3783 | } |
3784 | ||
3785 | /* Fill in the special first entry in the procedure linkage table. */ | |
f41345a7 | 3786 | if (htab->elf.splt && htab->elf.splt->size > 0) |
a85d7ed0 | 3787 | { |
f41345a7 | 3788 | memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE); |
0e1862bb | 3789 | if (bfd_link_pic (info)) |
0451c93c | 3790 | { |
f41345a7 | 3791 | memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry, |
9aa17453 AK |
3792 | PLT_FIRST_ENTRY_SIZE); |
3793 | } | |
26e41594 | 3794 | else |
9aa17453 | 3795 | { |
f41345a7 | 3796 | memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry, |
9aa17453 | 3797 | PLT_FIRST_ENTRY_SIZE); |
26e41594 | 3798 | bfd_put_32 (output_bfd, |
f41345a7 AK |
3799 | htab->elf.sgotplt->output_section->vma |
3800 | + htab->elf.sgotplt->output_offset, | |
3801 | htab->elf.splt->contents + 24); | |
ceada896 | 3802 | } |
f41345a7 | 3803 | elf_section_data (htab->elf.splt->output_section) |
0451c93c | 3804 | ->this_hdr.sh_entsize = 4; |
a85d7ed0 NC |
3805 | } |
3806 | ||
3807 | } | |
3808 | ||
f41345a7 | 3809 | if (htab->elf.sgotplt) |
a85d7ed0 | 3810 | { |
0451c93c | 3811 | /* Fill in the first three entries in the global offset table. */ |
f41345a7 | 3812 | if (htab->elf.sgotplt->size > 0) |
0451c93c MS |
3813 | { |
3814 | bfd_put_32 (output_bfd, | |
3815 | (sdyn == NULL ? (bfd_vma) 0 | |
3816 | : sdyn->output_section->vma + sdyn->output_offset), | |
f41345a7 | 3817 | htab->elf.sgotplt->contents); |
0451c93c | 3818 | /* One entry for shared object struct ptr. */ |
f41345a7 | 3819 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4); |
0451c93c | 3820 | /* One entry for _dl_runtime_resolve. */ |
f41345a7 | 3821 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8); |
0451c93c | 3822 | } |
a85d7ed0 | 3823 | |
f41345a7 | 3824 | elf_section_data (htab->elf.sgotplt->output_section) |
0451c93c MS |
3825 | ->this_hdr.sh_entsize = 4; |
3826 | } | |
470b557a | 3827 | /* Finish dynamic symbol for local IFUNC symbols. */ |
c72f2fb2 | 3828 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
470b557a AK |
3829 | { |
3830 | struct plt_entry *local_plt; | |
3831 | Elf_Internal_Sym *isym; | |
3832 | Elf_Internal_Shdr *symtab_hdr; | |
3833 | ||
3834 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
3835 | ||
1ef692ea AK |
3836 | if (!is_s390_elf (ibfd)) |
3837 | continue; | |
3838 | ||
470b557a AK |
3839 | local_plt = elf_s390_local_plt (ibfd); |
3840 | if (local_plt != NULL) | |
3841 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
3842 | { | |
3843 | if (local_plt[i].plt.offset != (bfd_vma) -1) | |
3844 | { | |
3845 | asection *sec = local_plt[i].sec; | |
3846 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i); | |
3847 | if (isym == NULL) | |
3848 | return FALSE; | |
3849 | ||
3850 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
3851 | elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab, | |
3852 | local_plt[i].plt.offset, | |
3853 | isym->st_value | |
3854 | + sec->output_section->vma | |
3855 | + sec->output_offset); | |
3856 | ||
3857 | } | |
3858 | } | |
3859 | } | |
b34976b6 | 3860 | return TRUE; |
a85d7ed0 | 3861 | } |
e3e9290d AA |
3862 | \f |
3863 | /* Support for core dump NOTE sections. */ | |
a85d7ed0 | 3864 | |
b34976b6 | 3865 | static bfd_boolean |
2c3fc389 | 3866 | elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note) |
979f4a38 NC |
3867 | { |
3868 | int offset; | |
eea6121a | 3869 | unsigned int size; |
979f4a38 NC |
3870 | |
3871 | switch (note->descsz) | |
3872 | { | |
ceada896 AA |
3873 | default: |
3874 | return FALSE; | |
979f4a38 | 3875 | |
ceada896 AA |
3876 | case 224: /* S/390 Linux. */ |
3877 | /* pr_cursig */ | |
3878 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
979f4a38 | 3879 | |
ceada896 AA |
3880 | /* pr_pid */ |
3881 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); | |
979f4a38 | 3882 | |
ceada896 AA |
3883 | /* pr_reg */ |
3884 | offset = 72; | |
3885 | size = 144; | |
3886 | break; | |
979f4a38 NC |
3887 | } |
3888 | ||
3889 | /* Make a ".reg/999" section. */ | |
3890 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 3891 | size, note->descpos + offset); |
979f4a38 NC |
3892 | } |
3893 | ||
e3e9290d AA |
3894 | static bfd_boolean |
3895 | elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
3896 | { | |
3897 | switch (note->descsz) | |
3898 | { | |
3899 | default: | |
3900 | return FALSE; | |
3901 | ||
3902 | case 124: /* sizeof(struct elf_prpsinfo) on s390 */ | |
3903 | elf_tdata (abfd)->core->pid | |
3904 | = bfd_get_32 (abfd, note->descdata + 12); | |
3905 | elf_tdata (abfd)->core->program | |
3906 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
3907 | elf_tdata (abfd)->core->command | |
3908 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
3909 | break; | |
3910 | } | |
3911 | ||
3912 | /* Note that for some reason, a spurious space is tacked | |
3913 | onto the end of the args in some (at least one anyway) | |
3914 | implementations, so strip it off if it exists. */ | |
3915 | ||
3916 | { | |
3917 | char *command = elf_tdata (abfd)->core->command; | |
3918 | int n = strlen (command); | |
3919 | ||
3920 | if (0 < n && command[n - 1] == ' ') | |
3921 | command[n - 1] = '\0'; | |
3922 | } | |
3923 | ||
3924 | return TRUE; | |
3925 | } | |
3926 | ||
3927 | static char * | |
3928 | elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz, | |
3929 | int note_type, ...) | |
3930 | { | |
3931 | va_list ap; | |
3932 | ||
3933 | switch (note_type) | |
3934 | { | |
3935 | default: | |
3936 | return NULL; | |
3937 | ||
3938 | case NT_PRPSINFO: | |
3939 | { | |
3940 | char data[124] = { 0 }; | |
3941 | const char *fname, *psargs; | |
3942 | ||
3943 | va_start (ap, note_type); | |
3944 | fname = va_arg (ap, const char *); | |
3945 | psargs = va_arg (ap, const char *); | |
3946 | va_end (ap); | |
3947 | ||
3948 | strncpy (data + 28, fname, 16); | |
3949 | strncpy (data + 44, psargs, 80); | |
3950 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, | |
3951 | &data, sizeof (data)); | |
3952 | } | |
3953 | ||
3954 | case NT_PRSTATUS: | |
3955 | { | |
3956 | char data[224] = { 0 }; | |
3957 | long pid; | |
3958 | int cursig; | |
3959 | const void *gregs; | |
3960 | ||
3961 | va_start (ap, note_type); | |
3962 | pid = va_arg (ap, long); | |
3963 | cursig = va_arg (ap, int); | |
3964 | gregs = va_arg (ap, const void *); | |
3965 | va_end (ap); | |
3966 | ||
3967 | bfd_put_16 (abfd, cursig, data + 12); | |
3968 | bfd_put_32 (abfd, pid, data + 24); | |
3969 | memcpy (data + 72, gregs, 144); | |
3970 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, | |
3971 | &data, sizeof (data)); | |
3972 | } | |
3973 | } | |
3974 | /* NOTREACHED */ | |
3975 | } | |
3976 | \f | |
4c45e5c9 JJ |
3977 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
3978 | or (bfd_vma) -1 if it should not be included. */ | |
3979 | ||
3980 | static bfd_vma | |
3981 | elf_s390_plt_sym_val (bfd_vma i, const asection *plt, | |
3982 | const arelent *rel ATTRIBUTE_UNUSED) | |
3983 | { | |
3984 | return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE; | |
3985 | } | |
3986 | ||
643f7afb AK |
3987 | /* Merge backend specific data from an object file to the output |
3988 | object file when linking. */ | |
3989 | ||
55786da2 | 3990 | static bfd_boolean |
50e03d47 | 3991 | elf32_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
55786da2 | 3992 | { |
50e03d47 AM |
3993 | bfd *obfd = info->output_bfd; |
3994 | ||
643f7afb AK |
3995 | if (!is_s390_elf (ibfd) || !is_s390_elf (obfd)) |
3996 | return TRUE; | |
3997 | ||
50e03d47 | 3998 | if (!elf_s390_merge_obj_attributes (ibfd, info)) |
643f7afb AK |
3999 | return FALSE; |
4000 | ||
55786da2 AK |
4001 | elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags; |
4002 | return TRUE; | |
4003 | } | |
4004 | ||
4c45e5c9 | 4005 | |
6d00b590 | 4006 | #define TARGET_BIG_SYM s390_elf32_vec |
a85d7ed0 NC |
4007 | #define TARGET_BIG_NAME "elf32-s390" |
4008 | #define ELF_ARCH bfd_arch_s390 | |
ae95ffa6 | 4009 | #define ELF_TARGET_ID S390_ELF_DATA |
a85d7ed0 NC |
4010 | #define ELF_MACHINE_CODE EM_S390 |
4011 | #define ELF_MACHINE_ALT1 EM_S390_OLD | |
4012 | #define ELF_MAXPAGESIZE 0x1000 | |
4013 | ||
4014 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4015 | #define elf_backend_can_refcount 1 |
a85d7ed0 NC |
4016 | #define elf_backend_want_got_plt 1 |
4017 | #define elf_backend_plt_readonly 1 | |
4018 | #define elf_backend_want_plt_sym 0 | |
4019 | #define elf_backend_got_header_size 12 | |
5474d94f | 4020 | #define elf_backend_want_dynrelro 1 |
b491616a | 4021 | #define elf_backend_rela_normal 1 |
a85d7ed0 | 4022 | |
26e41594 | 4023 | #define elf_info_to_howto elf_s390_info_to_howto |
a85d7ed0 | 4024 | |
a85d7ed0 NC |
4025 | #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name |
4026 | #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create | |
4027 | #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup | |
157090f7 | 4028 | #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup |
a85d7ed0 | 4029 | |
55786da2 AK |
4030 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data |
4031 | ||
a85d7ed0 | 4032 | #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol |
26e41594 | 4033 | #define elf_backend_check_relocs elf_s390_check_relocs |
0451c93c | 4034 | #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol |
9d19e4fd | 4035 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
a85d7ed0 NC |
4036 | #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections |
4037 | #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol | |
26e41594 | 4038 | #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook |
0451c93c | 4039 | #define elf_backend_reloc_type_class elf_s390_reloc_type_class |
26e41594 | 4040 | #define elf_backend_relocate_section elf_s390_relocate_section |
a85d7ed0 | 4041 | #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections |
74541ad4 | 4042 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
979f4a38 | 4043 | #define elf_backend_grok_prstatus elf_s390_grok_prstatus |
e3e9290d AA |
4044 | #define elf_backend_grok_psinfo elf_s390_grok_psinfo |
4045 | #define elf_backend_write_core_note elf_s390_write_core_note | |
4c45e5c9 | 4046 | #define elf_backend_plt_sym_val elf_s390_plt_sym_val |
07d6d2b8 AM |
4047 | #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook |
4048 | #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p | |
a85d7ed0 | 4049 | |
69fc87f1 | 4050 | #define bfd_elf32_mkobject elf_s390_mkobject |
26e41594 | 4051 | #define elf_backend_object_p elf_s390_object_p |
a85d7ed0 | 4052 | |
a2f63b2e MR |
4053 | #define elf_backend_linux_prpsinfo32_ugid16 TRUE |
4054 | ||
a85d7ed0 | 4055 | #include "elf32-target.h" |