Commit | Line | Data |
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a85d7ed0 | 1 | /* IBM S/390-specific support for 32-bit ELF |
219d1afa | 2 | Copyright (C) 2000-2018 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 | ||
f3185997 NC |
326 | static bfd_boolean |
327 | elf_s390_info_to_howto (bfd *abfd, | |
2c3fc389 NC |
328 | arelent *cache_ptr, |
329 | Elf_Internal_Rela *dst) | |
a85d7ed0 | 330 | { |
d0fb9a8d | 331 | unsigned int r_type = ELF32_R_TYPE(dst->r_info); |
f3185997 | 332 | |
d0fb9a8d | 333 | switch (r_type) |
a85d7ed0 NC |
334 | { |
335 | case R_390_GNU_VTINHERIT: | |
336 | cache_ptr->howto = &elf32_s390_vtinherit_howto; | |
337 | break; | |
338 | ||
339 | case R_390_GNU_VTENTRY: | |
340 | cache_ptr->howto = &elf32_s390_vtentry_howto; | |
341 | break; | |
342 | ||
343 | default: | |
d0fb9a8d JJ |
344 | if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0])) |
345 | { | |
695344c0 | 346 | /* xgettext:c-format */ |
0aa13fee AM |
347 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
348 | abfd, r_type); | |
f3185997 NC |
349 | bfd_set_error (bfd_error_bad_value); |
350 | return FALSE; | |
d0fb9a8d JJ |
351 | } |
352 | cache_ptr->howto = &elf_howto_table[r_type]; | |
dc810e39 | 353 | } |
f3185997 NC |
354 | |
355 | return TRUE; | |
a85d7ed0 NC |
356 | } |
357 | ||
69fc87f1 MS |
358 | /* A relocation function which doesn't do anything. */ |
359 | static bfd_reloc_status_type | |
2c3fc389 NC |
360 | s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
361 | arelent *reloc_entry, | |
362 | asymbol *symbol ATTRIBUTE_UNUSED, | |
363 | void * data ATTRIBUTE_UNUSED, | |
364 | asection *input_section, | |
365 | bfd *output_bfd, | |
366 | char **error_message ATTRIBUTE_UNUSED) | |
69fc87f1 MS |
367 | { |
368 | if (output_bfd) | |
369 | reloc_entry->address += input_section->output_offset; | |
370 | return bfd_reloc_ok; | |
371 | } | |
372 | ||
bd1ea41b MS |
373 | /* Handle the large displacement relocs. */ |
374 | static bfd_reloc_status_type | |
2c3fc389 NC |
375 | s390_elf_ldisp_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
376 | arelent *reloc_entry, | |
377 | asymbol *symbol, | |
378 | void * data ATTRIBUTE_UNUSED, | |
379 | asection *input_section, | |
380 | bfd *output_bfd, | |
381 | char **error_message ATTRIBUTE_UNUSED) | |
bd1ea41b MS |
382 | { |
383 | reloc_howto_type *howto = reloc_entry->howto; | |
384 | bfd_vma relocation; | |
385 | bfd_vma insn; | |
68ffbac6 | 386 | |
bd1ea41b MS |
387 | if (output_bfd != (bfd *) NULL |
388 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
389 | && (! howto->partial_inplace | |
390 | || reloc_entry->addend == 0)) | |
391 | { | |
392 | reloc_entry->address += input_section->output_offset; | |
393 | return bfd_reloc_ok; | |
394 | } | |
68ffbac6 | 395 | |
bd1ea41b MS |
396 | if (output_bfd != NULL) |
397 | return bfd_reloc_continue; | |
68ffbac6 | 398 | |
07515404 | 399 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
bd1ea41b | 400 | return bfd_reloc_outofrange; |
68ffbac6 | 401 | |
bd1ea41b MS |
402 | relocation = (symbol->value |
403 | + symbol->section->output_section->vma | |
404 | + symbol->section->output_offset); | |
405 | relocation += reloc_entry->addend; | |
406 | if (howto->pc_relative) | |
407 | { | |
408 | relocation -= (input_section->output_section->vma | |
409 | + input_section->output_offset); | |
410 | relocation -= reloc_entry->address; | |
411 | } | |
68ffbac6 | 412 | |
bd1ea41b MS |
413 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
414 | insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4; | |
415 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
68ffbac6 | 416 | |
bd1ea41b MS |
417 | if ((bfd_signed_vma) relocation < - 0x80000 |
418 | || (bfd_signed_vma) relocation > 0x7ffff) | |
419 | return bfd_reloc_overflow; | |
420 | else | |
421 | return bfd_reloc_ok; | |
422 | } | |
423 | ||
b34976b6 | 424 | static bfd_boolean |
2c3fc389 | 425 | elf_s390_is_local_label_name (bfd *abfd, const char *name) |
a85d7ed0 NC |
426 | { |
427 | if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L')) | |
b34976b6 | 428 | return TRUE; |
a85d7ed0 NC |
429 | |
430 | return _bfd_elf_is_local_label_name (abfd, name); | |
431 | } | |
432 | ||
433 | /* Functions for the 390 ELF linker. */ | |
434 | ||
435 | /* The name of the dynamic interpreter. This is put in the .interp | |
436 | section. */ | |
437 | ||
87049b0d | 438 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" |
a85d7ed0 | 439 | |
64285810 MS |
440 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
441 | copying dynamic variables from a shared lib into an app's dynbss | |
442 | section, and instead use a dynamic relocation to point into the | |
443 | shared lib. */ | |
444 | #define ELIMINATE_COPY_RELOCS 1 | |
445 | ||
a85d7ed0 NC |
446 | /* The size in bytes of the first entry in the procedure linkage table. */ |
447 | #define PLT_FIRST_ENTRY_SIZE 32 | |
448 | /* The size in bytes of an entry in the procedure linkage table. */ | |
dc810e39 | 449 | #define PLT_ENTRY_SIZE 32 |
a85d7ed0 NC |
450 | |
451 | #define GOT_ENTRY_SIZE 4 | |
452 | ||
470b557a AK |
453 | #define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela) |
454 | ||
a85d7ed0 NC |
455 | /* The first three entries in a procedure linkage table are reserved, |
456 | and the initial contents are unimportant (we zero them out). | |
457 | Subsequent entries look like this. See the SVR4 ABI 386 | |
458 | supplement to see how this works. */ | |
459 | ||
460 | /* For the s390, simple addr offset can only be 0 - 4096. | |
461 | To use the full 2 GB address space, several instructions | |
462 | are needed to load an address in a register and execute | |
463 | a branch( or just saving the address) | |
464 | ||
dc810e39 | 465 | Furthermore, only r 0 and 1 are free to use!!! */ |
a85d7ed0 NC |
466 | |
467 | /* The first 3 words in the GOT are then reserved. | |
468 | Word 0 is the address of the dynamic table. | |
469 | Word 1 is a pointer to a structure describing the object | |
470 | Word 2 is used to point to the loader entry address. | |
471 | ||
4cc11e76 | 472 | The code for position independent PLT entries looks like this: |
a85d7ed0 NC |
473 | |
474 | r12 holds addr of the current GOT at entry to the PLT | |
475 | ||
476 | The GOT holds the address in the PLT to be executed. | |
477 | The loader then gets: | |
478 | 24(15) = Pointer to the structure describing the object. | |
a7e28bbe | 479 | 28(15) = Offset into rela.plt |
a85d7ed0 NC |
480 | |
481 | The loader must then find the module where the function is | |
482 | and insert the address in the GOT. | |
483 | ||
484 | Note: 390 can only address +- 64 K relative. | |
07d6d2b8 AM |
485 | We check if offset > 65536, then make a relative branch -64xxx |
486 | back to a previous defined branch | |
487 | ||
488 | PLT1: BASR 1,0 # 2 bytes | |
489 | L 1,22(1) # 4 bytes Load offset in GOT in r 1 | |
490 | L 1,(1,12) # 4 bytes Load address from GOT in r1 | |
491 | BCR 15,1 # 2 bytes Jump to address | |
492 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
493 | L 1,14(1) # 4 bytes Load offset in symol table in r1 | |
a85d7ed0 | 494 | BRC 15,-x # 4 bytes Jump to start of PLT |
07d6d2b8 AM |
495 | .word 0 # 2 bytes filler |
496 | .long ? # 4 bytes offset in GOT | |
497 | .long ? # 4 bytes offset into rela.plt | |
a85d7ed0 NC |
498 | |
499 | This was the general case. There are two additional, optimizes PLT | |
500 | definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768. | |
501 | First the one for GOT offsets < 4096: | |
502 | ||
07d6d2b8 AM |
503 | PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1 |
504 | BCR 15,1 # 2 bytes Jump to address | |
505 | .word 0,0,0 # 6 bytes filler | |
506 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
507 | L 1,14(1) # 4 bytes Load offset in rela.plt in r1 | |
508 | BRC 15,-x # 4 bytes Jump to start of PLT | |
509 | .word 0,0,0 # 6 bytes filler | |
510 | .long ? # 4 bytes offset into rela.plt | |
a85d7ed0 NC |
511 | |
512 | Second the one for GOT offsets < 32768: | |
513 | ||
07d6d2b8 AM |
514 | PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1 |
515 | L 1,(1,12) # 4 bytes Load address from GOT to r1 | |
516 | BCR 15,1 # 2 bytes Jump to address | |
517 | .word 0 # 2 bytes filler | |
518 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
519 | L 1,14(1) # 4 bytes Load offset in rela.plt in r1 | |
520 | BRC 15,-x # 4 bytes Jump to start of PLT | |
521 | .word 0,0,0 # 6 bytes filler | |
522 | .long ? # 4 bytes offset into rela.plt | |
a85d7ed0 NC |
523 | |
524 | Total = 32 bytes per PLT entry | |
525 | ||
526 | The code for static build PLT entries looks like this: | |
527 | ||
07d6d2b8 AM |
528 | PLT1: BASR 1,0 # 2 bytes |
529 | L 1,22(1) # 4 bytes Load address of GOT entry | |
530 | L 1,0(0,1) # 4 bytes Load address from GOT in r1 | |
531 | BCR 15,1 # 2 bytes Jump to address | |
532 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
533 | L 1,14(1) # 4 bytes Load offset in symbol table in r1 | |
a85d7ed0 | 534 | BRC 15,-x # 4 bytes Jump to start of PLT |
07d6d2b8 AM |
535 | .word 0 # 2 bytes filler |
536 | .long ? # 4 bytes address of GOT entry | |
537 | .long ? # 4 bytes offset into rela.plt */ | |
a85d7ed0 | 538 | |
9aa17453 AK |
539 | static const bfd_byte elf_s390_plt_entry[PLT_ENTRY_SIZE] = |
540 | { | |
07d6d2b8 AM |
541 | 0x0d, 0x10, /* basr %r1,%r0 */ |
542 | 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */ | |
543 | 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */ | |
544 | 0x07, 0xf1, /* br %r1 */ | |
545 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
546 | 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */ | |
547 | 0xa7, 0xf4, 0x00, 0x00, /* j first plt */ | |
548 | 0x00, 0x00, /* padding */ | |
549 | 0x00, 0x00, 0x00, 0x00, /* GOT offset */ | |
550 | 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */ | |
9aa17453 AK |
551 | }; |
552 | ||
553 | /* Generic PLT pic entry. */ | |
554 | static const bfd_byte elf_s390_plt_pic_entry[PLT_ENTRY_SIZE] = | |
555 | { | |
07d6d2b8 AM |
556 | 0x0d, 0x10, /* basr %r1,%r0 */ |
557 | 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */ | |
558 | 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */ | |
559 | 0x07, 0xf1, /* br %r1 */ | |
560 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
561 | 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */ | |
562 | 0xa7, 0xf4, 0x00, 0x00, /* j first plt */ | |
563 | 0x00, 0x00, /* padding */ | |
564 | 0x00, 0x00, 0x00, 0x00, /* GOT offset */ | |
565 | 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */ | |
9aa17453 AK |
566 | }; |
567 | ||
568 | /* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced | |
569 | when generating the PLT slot with the GOT offset. */ | |
570 | static const bfd_byte elf_s390_plt_pic12_entry[PLT_ENTRY_SIZE] = | |
571 | { | |
07d6d2b8 AM |
572 | 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */ |
573 | 0x07, 0xf1, /* br %r1 */ | |
574 | 0x00, 0x00, 0x00, 0x00, /* padding */ | |
9aa17453 | 575 | 0x00, 0x00, |
07d6d2b8 AM |
576 | 0x0d, 0x10, /* basr %r1,%r0 */ |
577 | 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */ | |
578 | 0xa7, 0xf4, 0x00, 0x00, /* j first plt */ | |
9aa17453 AK |
579 | 0x00, 0x00, 0x00, 0x00, |
580 | 0x00, 0x00, 0x00, 0x00 | |
581 | }; | |
582 | ||
583 | /* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced | |
584 | when generating the PLT slot with the GOT offset. */ | |
585 | static const bfd_byte elf_s390_plt_pic16_entry[PLT_ENTRY_SIZE] = | |
586 | { | |
07d6d2b8 AM |
587 | 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */ |
588 | 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */ | |
589 | 0x07, 0xf1, /* br %r1 */ | |
9aa17453 | 590 | 0x00, 0x00, |
07d6d2b8 AM |
591 | 0x0d, 0x10, /* basr %r1,%r0 */ |
592 | 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */ | |
593 | 0xa7, 0xf4, 0x00, 0x00, /* j first plt */ | |
9aa17453 AK |
594 | 0x00, 0x00, 0x00, 0x00, |
595 | 0x00, 0x00, 0x00, 0x00, | |
596 | 0x00, 0x00 | |
597 | }; | |
a85d7ed0 | 598 | |
a7e28bbe | 599 | /* The first PLT entry pushes the offset into the rela.plt |
a85d7ed0 NC |
600 | from R1 onto the stack at 8(15) and the loader object info |
601 | at 12(15), loads the loader address in R1 and jumps to it. */ | |
602 | ||
603 | /* The first entry in the PLT for PIC code: | |
604 | ||
605 | PLT0: | |
07d6d2b8 AM |
606 | ST 1,28(15) # R1 has offset into rela.plt |
607 | L 1,4(12) # Get loader ino(object struct address) | |
608 | ST 1,24(15) # Store address | |
609 | L 1,8(12) # Entry address of loader in R1 | |
610 | BR 1 # Jump to loader | |
a85d7ed0 NC |
611 | |
612 | The first entry in the PLT for static code: | |
613 | ||
614 | PLT0: | |
07d6d2b8 | 615 | ST 1,28(15) # R1 has offset into rela.plt |
a85d7ed0 | 616 | BASR 1,0 |
07d6d2b8 AM |
617 | L 1,18(0,1) # Get address of GOT |
618 | MVC 24(4,15),4(1) # Move loader ino to stack | |
619 | L 1,8(1) # Get address of loader | |
620 | BR 1 # Jump to loader | |
621 | .word 0 # filler | |
622 | .long got # address of GOT */ | |
a85d7ed0 | 623 | |
9aa17453 AK |
624 | static const bfd_byte elf_s390_plt_first_entry[PLT_FIRST_ENTRY_SIZE] = |
625 | { | |
07d6d2b8 AM |
626 | 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */ |
627 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
628 | 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */ | |
629 | 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */ | |
630 | 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */ | |
631 | 0x07, 0xf1, /* br %r1 */ | |
9aa17453 AK |
632 | 0x00, 0x00, 0x00, 0x00, |
633 | 0x00, 0x00, 0x00, 0x00, | |
634 | 0x00, 0x00 | |
635 | }; | |
636 | ||
637 | static const bfd_byte elf_s390_plt_pic_first_entry[PLT_FIRST_ENTRY_SIZE] = | |
638 | { | |
07d6d2b8 AM |
639 | 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */ |
640 | 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */ | |
641 | 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */ | |
642 | 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */ | |
643 | 0x07, 0xf1, /* br %r1 */ | |
9aa17453 AK |
644 | 0x00, 0x00, 0x00, 0x00, |
645 | 0x00, 0x00, 0x00, 0x00, | |
646 | 0x00, 0x00, 0x00, 0x00, | |
647 | 0x00, 0x00 | |
648 | }; | |
a85d7ed0 | 649 | |
a85d7ed0 NC |
650 | |
651 | /* s390 ELF linker hash entry. */ | |
652 | ||
653 | struct elf_s390_link_hash_entry | |
654 | { | |
0451c93c | 655 | struct elf_link_hash_entry elf; |
a85d7ed0 | 656 | |
0451c93c | 657 | /* Track dynamic relocs copied for this symbol. */ |
00d8c7a9 | 658 | struct elf_dyn_relocs *dyn_relocs; |
5236c819 MS |
659 | |
660 | /* Number of GOTPLT references for a function. */ | |
661 | bfd_signed_vma gotplt_refcount; | |
69fc87f1 MS |
662 | |
663 | #define GOT_UNKNOWN 0 | |
664 | #define GOT_NORMAL 1 | |
665 | #define GOT_TLS_GD 2 | |
666 | #define GOT_TLS_IE 3 | |
667 | #define GOT_TLS_IE_NLT 4 | |
668 | unsigned char tls_type; | |
470b557a AK |
669 | |
670 | /* For pointer equality reasons we might need to change the symbol | |
671 | type from STT_GNU_IFUNC to STT_FUNC together with its value and | |
672 | section entry. So after alloc_dynrelocs only these values should | |
673 | be used. In order to check whether a symbol is IFUNC use | |
674 | s390_is_ifunc_symbol_p. */ | |
675 | bfd_vma ifunc_resolver_address; | |
676 | asection *ifunc_resolver_section; | |
a85d7ed0 NC |
677 | }; |
678 | ||
69fc87f1 MS |
679 | #define elf_s390_hash_entry(ent) \ |
680 | ((struct elf_s390_link_hash_entry *)(ent)) | |
681 | ||
470b557a AK |
682 | /* This structure represents an entry in the local PLT list needed for |
683 | local IFUNC symbols. */ | |
684 | struct plt_entry | |
685 | { | |
686 | /* The section of the local symbol. | |
687 | Set in relocate_section and used in finish_dynamic_sections. */ | |
688 | asection *sec; | |
689 | ||
690 | union | |
691 | { | |
692 | bfd_signed_vma refcount; | |
693 | bfd_vma offset; | |
694 | } plt; | |
695 | }; | |
696 | ||
0ffa91dd NC |
697 | /* NOTE: Keep this structure in sync with |
698 | the one declared in elf64-s390.c. */ | |
69fc87f1 MS |
699 | struct elf_s390_obj_tdata |
700 | { | |
701 | struct elf_obj_tdata root; | |
702 | ||
470b557a AK |
703 | /* A local PLT is needed for ifunc symbols. */ |
704 | struct plt_entry *local_plt; | |
705 | ||
0ffa91dd | 706 | /* TLS type for each local got entry. */ |
69fc87f1 MS |
707 | char *local_got_tls_type; |
708 | }; | |
709 | ||
710 | #define elf_s390_tdata(abfd) \ | |
711 | ((struct elf_s390_obj_tdata *) (abfd)->tdata.any) | |
712 | ||
470b557a AK |
713 | #define elf_s390_local_plt(abfd) \ |
714 | (elf_s390_tdata (abfd)->local_plt) | |
715 | ||
69fc87f1 MS |
716 | #define elf_s390_local_got_tls_type(abfd) \ |
717 | (elf_s390_tdata (abfd)->local_got_tls_type) | |
718 | ||
0ffa91dd NC |
719 | #define is_s390_elf(bfd) \ |
720 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
721 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 722 | && elf_object_id (bfd) == S390_ELF_DATA) |
0ffa91dd | 723 | |
69fc87f1 | 724 | static bfd_boolean |
62d7a5f6 | 725 | elf_s390_mkobject (bfd *abfd) |
69fc87f1 | 726 | { |
0ffa91dd | 727 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata), |
4dfe6ac6 | 728 | S390_ELF_DATA); |
69fc87f1 MS |
729 | } |
730 | ||
731 | static bfd_boolean | |
2c3fc389 | 732 | elf_s390_object_p (bfd *abfd) |
69fc87f1 | 733 | { |
69fc87f1 MS |
734 | /* Set the right machine number for an s390 elf32 file. */ |
735 | return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31); | |
736 | } | |
737 | ||
a85d7ed0 NC |
738 | /* s390 ELF linker hash table. */ |
739 | ||
740 | struct elf_s390_link_hash_table | |
741 | { | |
0451c93c | 742 | struct elf_link_hash_table elf; |
a85d7ed0 | 743 | |
0451c93c | 744 | /* Short-cuts to get to dynamic linker sections. */ |
470b557a | 745 | asection *irelifunc; |
ec338859 | 746 | |
2c3fc389 NC |
747 | union |
748 | { | |
69fc87f1 MS |
749 | bfd_signed_vma refcount; |
750 | bfd_vma offset; | |
751 | } tls_ldm_got; | |
752 | ||
87d72d41 AM |
753 | /* Small local sym cache. */ |
754 | struct sym_cache sym_cache; | |
0451c93c | 755 | }; |
a85d7ed0 NC |
756 | |
757 | /* Get the s390 ELF linker hash table from a link_info structure. */ | |
758 | ||
759 | #define elf_s390_hash_table(p) \ | |
4dfe6ac6 NC |
760 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
761 | == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL) | |
a85d7ed0 | 762 | |
470b557a AK |
763 | #undef ELF64 |
764 | #include "elf-s390-common.c" | |
765 | ||
a85d7ed0 NC |
766 | /* Create an entry in an s390 ELF linker hash table. */ |
767 | ||
768 | static struct bfd_hash_entry * | |
2c3fc389 NC |
769 | link_hash_newfunc (struct bfd_hash_entry *entry, |
770 | struct bfd_hash_table *table, | |
771 | const char *string) | |
a85d7ed0 | 772 | { |
a85d7ed0 NC |
773 | /* Allocate the structure if it has not already been allocated by a |
774 | subclass. */ | |
0451c93c MS |
775 | if (entry == NULL) |
776 | { | |
777 | entry = bfd_hash_allocate (table, | |
778 | sizeof (struct elf_s390_link_hash_entry)); | |
779 | if (entry == NULL) | |
780 | return entry; | |
781 | } | |
ec338859 | 782 | |
a85d7ed0 | 783 | /* Call the allocation method of the superclass. */ |
0451c93c MS |
784 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
785 | if (entry != NULL) | |
a85d7ed0 | 786 | { |
0451c93c | 787 | struct elf_s390_link_hash_entry *eh; |
ec338859 | 788 | |
0451c93c MS |
789 | eh = (struct elf_s390_link_hash_entry *) entry; |
790 | eh->dyn_relocs = NULL; | |
5236c819 | 791 | eh->gotplt_refcount = 0; |
69fc87f1 | 792 | eh->tls_type = GOT_UNKNOWN; |
470b557a AK |
793 | eh->ifunc_resolver_address = 0; |
794 | eh->ifunc_resolver_section = NULL; | |
a85d7ed0 NC |
795 | } |
796 | ||
0451c93c | 797 | return entry; |
a85d7ed0 NC |
798 | } |
799 | ||
800 | /* Create an s390 ELF linker hash table. */ | |
801 | ||
802 | static struct bfd_link_hash_table * | |
2c3fc389 | 803 | elf_s390_link_hash_table_create (bfd *abfd) |
a85d7ed0 NC |
804 | { |
805 | struct elf_s390_link_hash_table *ret; | |
dc810e39 | 806 | bfd_size_type amt = sizeof (struct elf_s390_link_hash_table); |
a85d7ed0 | 807 | |
7bf52ea2 | 808 | ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt); |
0451c93c | 809 | if (ret == NULL) |
a85d7ed0 NC |
810 | return NULL; |
811 | ||
66eb6687 | 812 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
813 | sizeof (struct elf_s390_link_hash_entry), |
814 | S390_ELF_DATA)) | |
a85d7ed0 | 815 | { |
e2d34d7d | 816 | free (ret); |
a85d7ed0 NC |
817 | return NULL; |
818 | } | |
819 | ||
0451c93c MS |
820 | return &ret->elf.root; |
821 | } | |
822 | ||
0451c93c MS |
823 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
824 | ||
825 | static void | |
2c3fc389 NC |
826 | elf_s390_copy_indirect_symbol (struct bfd_link_info *info, |
827 | struct elf_link_hash_entry *dir, | |
828 | struct elf_link_hash_entry *ind) | |
0451c93c MS |
829 | { |
830 | struct elf_s390_link_hash_entry *edir, *eind; | |
831 | ||
832 | edir = (struct elf_s390_link_hash_entry *) dir; | |
833 | eind = (struct elf_s390_link_hash_entry *) ind; | |
834 | ||
835 | if (eind->dyn_relocs != NULL) | |
836 | { | |
837 | if (edir->dyn_relocs != NULL) | |
838 | { | |
00d8c7a9 AK |
839 | struct elf_dyn_relocs **pp; |
840 | struct elf_dyn_relocs *p; | |
0451c93c | 841 | |
fcfa13d2 | 842 | /* Add reloc counts against the indirect sym to the direct sym |
0451c93c MS |
843 | list. Merge any entries against the same section. */ |
844 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
845 | { | |
00d8c7a9 | 846 | struct elf_dyn_relocs *q; |
0451c93c MS |
847 | |
848 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
849 | if (q->sec == p->sec) | |
850 | { | |
851 | q->pc_count += p->pc_count; | |
852 | q->count += p->count; | |
853 | *pp = p->next; | |
854 | break; | |
855 | } | |
856 | if (q == NULL) | |
857 | pp = &p->next; | |
858 | } | |
859 | *pp = edir->dyn_relocs; | |
860 | } | |
861 | ||
862 | edir->dyn_relocs = eind->dyn_relocs; | |
863 | eind->dyn_relocs = NULL; | |
864 | } | |
865 | ||
69fc87f1 MS |
866 | if (ind->root.type == bfd_link_hash_indirect |
867 | && dir->got.refcount <= 0) | |
868 | { | |
869 | edir->tls_type = eind->tls_type; | |
870 | eind->tls_type = GOT_UNKNOWN; | |
871 | } | |
872 | ||
64285810 MS |
873 | if (ELIMINATE_COPY_RELOCS |
874 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
875 | && dir->dynamic_adjusted) |
876 | { | |
877 | /* If called to transfer flags for a weakdef during processing | |
878 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
879 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
e81830c5 AM |
880 | if (dir->versioned != versioned_hidden) |
881 | dir->ref_dynamic |= ind->ref_dynamic; | |
f5385ebf AM |
882 | dir->ref_regular |= ind->ref_regular; |
883 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
884 | dir->needs_plt |= ind->needs_plt; | |
885 | } | |
64285810 | 886 | else |
fcfa13d2 | 887 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
0451c93c | 888 | } |
a85d7ed0 | 889 | |
69fc87f1 | 890 | static int |
2c3fc389 NC |
891 | elf_s390_tls_transition (struct bfd_link_info *info, |
892 | int r_type, | |
893 | int is_local) | |
69fc87f1 | 894 | { |
0e1862bb | 895 | if (bfd_link_pic (info)) |
69fc87f1 MS |
896 | return r_type; |
897 | ||
898 | switch (r_type) | |
899 | { | |
900 | case R_390_TLS_GD32: | |
901 | case R_390_TLS_IE32: | |
902 | if (is_local) | |
903 | return R_390_TLS_LE32; | |
904 | return R_390_TLS_IE32; | |
905 | case R_390_TLS_GOTIE32: | |
906 | if (is_local) | |
907 | return R_390_TLS_LE32; | |
908 | return R_390_TLS_GOTIE32; | |
909 | case R_390_TLS_LDM32: | |
910 | return R_390_TLS_LE32; | |
911 | } | |
912 | ||
913 | return r_type; | |
914 | } | |
915 | ||
a85d7ed0 NC |
916 | /* Look through the relocs for a section during the first phase, and |
917 | allocate space in the global offset table or procedure linkage | |
918 | table. */ | |
919 | ||
b34976b6 | 920 | static bfd_boolean |
2c3fc389 NC |
921 | elf_s390_check_relocs (bfd *abfd, |
922 | struct bfd_link_info *info, | |
923 | asection *sec, | |
924 | const Elf_Internal_Rela *relocs) | |
a85d7ed0 | 925 | { |
0451c93c | 926 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
927 | Elf_Internal_Shdr *symtab_hdr; |
928 | struct elf_link_hash_entry **sym_hashes; | |
a85d7ed0 NC |
929 | const Elf_Internal_Rela *rel; |
930 | const Elf_Internal_Rela *rel_end; | |
a85d7ed0 | 931 | asection *sreloc; |
5236c819 | 932 | bfd_signed_vma *local_got_refcounts; |
69fc87f1 | 933 | int tls_type, old_tls_type; |
470b557a | 934 | Elf_Internal_Sym *isym; |
a85d7ed0 | 935 | |
0e1862bb | 936 | if (bfd_link_relocatable (info)) |
b34976b6 | 937 | return TRUE; |
a85d7ed0 | 938 | |
0ffa91dd NC |
939 | BFD_ASSERT (is_s390_elf (abfd)); |
940 | ||
0451c93c | 941 | htab = elf_s390_hash_table (info); |
0ffa91dd | 942 | symtab_hdr = &elf_symtab_hdr (abfd); |
a85d7ed0 | 943 | sym_hashes = elf_sym_hashes (abfd); |
5236c819 | 944 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 945 | |
a85d7ed0 NC |
946 | sreloc = NULL; |
947 | ||
948 | rel_end = relocs + sec->reloc_count; | |
949 | for (rel = relocs; rel < rel_end; rel++) | |
950 | { | |
69fc87f1 | 951 | unsigned int r_type; |
d42c267e | 952 | unsigned int r_symndx; |
a85d7ed0 NC |
953 | struct elf_link_hash_entry *h; |
954 | ||
955 | r_symndx = ELF32_R_SYM (rel->r_info); | |
956 | ||
0451c93c MS |
957 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
958 | { | |
695344c0 | 959 | /* xgettext:c-format */ |
871b3ab2 | 960 | _bfd_error_handler (_("%pB: bad symbol index: %d"), |
4eca0228 | 961 | abfd, r_symndx); |
b34976b6 | 962 | return FALSE; |
0451c93c MS |
963 | } |
964 | ||
a85d7ed0 | 965 | if (r_symndx < symtab_hdr->sh_info) |
470b557a AK |
966 | { |
967 | /* A local symbol. */ | |
968 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
969 | abfd, r_symndx); | |
970 | if (isym == NULL) | |
971 | return FALSE; | |
972 | ||
973 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
974 | { | |
975 | struct plt_entry *plt; | |
976 | ||
0cb79d69 AK |
977 | if (htab->elf.dynobj == NULL) |
978 | htab->elf.dynobj = abfd; | |
979 | ||
470b557a AK |
980 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) |
981 | return FALSE; | |
982 | ||
983 | if (local_got_refcounts == NULL) | |
984 | { | |
985 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) | |
986 | return FALSE; | |
987 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
988 | } | |
989 | plt = elf_s390_local_plt (abfd); | |
990 | plt[r_symndx].plt.refcount++; | |
991 | } | |
992 | h = NULL; | |
993 | } | |
a85d7ed0 | 994 | else |
973a3492 L |
995 | { |
996 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
997 | while (h->root.type == bfd_link_hash_indirect | |
998 | || h->root.type == bfd_link_hash_warning) | |
999 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1000 | } | |
a85d7ed0 | 1001 | |
5236c819 MS |
1002 | /* Create got section and local_got_refcounts array if they |
1003 | are needed. */ | |
69fc87f1 MS |
1004 | r_type = elf_s390_tls_transition (info, |
1005 | ELF32_R_TYPE (rel->r_info), | |
1006 | h == NULL); | |
1007 | switch (r_type) | |
a85d7ed0 NC |
1008 | { |
1009 | case R_390_GOT12: | |
5236c819 | 1010 | case R_390_GOT16: |
bd1ea41b | 1011 | case R_390_GOT20: |
a85d7ed0 | 1012 | case R_390_GOT32: |
befc3abb | 1013 | case R_390_GOTENT: |
5236c819 MS |
1014 | case R_390_GOTPLT12: |
1015 | case R_390_GOTPLT16: | |
bd1ea41b | 1016 | case R_390_GOTPLT20: |
5236c819 MS |
1017 | case R_390_GOTPLT32: |
1018 | case R_390_GOTPLTENT: | |
69fc87f1 MS |
1019 | case R_390_TLS_GD32: |
1020 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1021 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1022 | case R_390_TLS_GOTIE32: |
1023 | case R_390_TLS_IEENT: | |
1024 | case R_390_TLS_IE32: | |
1025 | case R_390_TLS_LDM32: | |
5236c819 MS |
1026 | if (h == NULL |
1027 | && local_got_refcounts == NULL) | |
a85d7ed0 | 1028 | { |
470b557a | 1029 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) |
5236c819 | 1030 | return FALSE; |
470b557a | 1031 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 1032 | } |
5236c819 MS |
1033 | /* Fall through. */ |
1034 | case R_390_GOTOFF16: | |
1035 | case R_390_GOTOFF32: | |
0451c93c | 1036 | case R_390_GOTPC: |
befc3abb | 1037 | case R_390_GOTPCDBL: |
f41345a7 | 1038 | if (htab->elf.sgot == NULL) |
0451c93c MS |
1039 | { |
1040 | if (htab->elf.dynobj == NULL) | |
1041 | htab->elf.dynobj = abfd; | |
ce558b89 | 1042 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) |
b34976b6 | 1043 | return FALSE; |
0451c93c | 1044 | } |
5236c819 MS |
1045 | } |
1046 | ||
470b557a AK |
1047 | if (h != NULL) |
1048 | { | |
1049 | if (htab->elf.dynobj == NULL) | |
1050 | htab->elf.dynobj = abfd; | |
1051 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
1052 | return FALSE; | |
1053 | ||
1054 | /* Make sure an IFUNC symbol defined in a non-shared object | |
1055 | always gets a PLT slot. */ | |
1056 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
1057 | { | |
1058 | /* The symbol is called by the dynamic loader in order | |
1059 | to resolve the relocation. So it is in fact also | |
1060 | referenced. */ | |
1061 | h->ref_regular = 1; | |
1062 | h->needs_plt = 1; | |
1063 | } | |
1064 | } | |
69fc87f1 | 1065 | switch (r_type) |
5236c819 | 1066 | { |
5236c819 MS |
1067 | case R_390_GOTPC: |
1068 | case R_390_GOTPCDBL: | |
470b557a AK |
1069 | /* These relocs do not need a GOT slot. They just load the |
1070 | GOT pointer itself or address something else relative to | |
1071 | the GOT. Since the GOT pointer has been set up above we | |
1072 | are done. */ | |
a85d7ed0 | 1073 | break; |
01a53584 AK |
1074 | case R_390_GOTOFF16: |
1075 | case R_390_GOTOFF32: | |
1076 | if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular) | |
1077 | break; | |
1a0670f3 | 1078 | /* Fall through. */ |
a85d7ed0 | 1079 | |
fb798c50 | 1080 | case R_390_PLT12DBL: |
26e41594 | 1081 | case R_390_PLT16DBL: |
fb798c50 | 1082 | case R_390_PLT24DBL: |
26e41594 | 1083 | case R_390_PLT32DBL: |
a85d7ed0 | 1084 | case R_390_PLT32: |
5236c819 MS |
1085 | case R_390_PLTOFF16: |
1086 | case R_390_PLTOFF32: | |
a85d7ed0 | 1087 | /* This symbol requires a procedure linkage table entry. We |
26e41594 AM |
1088 | actually build the entry in adjust_dynamic_symbol, |
1089 | because this might be a case of linking PIC code which is | |
1090 | never referenced by a dynamic object, in which case we | |
1091 | don't need to generate a procedure linkage table entry | |
1092 | after all. */ | |
a85d7ed0 NC |
1093 | |
1094 | /* If this is a local symbol, we resolve it directly without | |
26e41594 | 1095 | creating a procedure linkage table entry. */ |
5236c819 MS |
1096 | if (h != NULL) |
1097 | { | |
f5385ebf | 1098 | h->needs_plt = 1; |
5236c819 MS |
1099 | h->plt.refcount += 1; |
1100 | } | |
1101 | break; | |
a85d7ed0 | 1102 | |
5236c819 MS |
1103 | case R_390_GOTPLT12: |
1104 | case R_390_GOTPLT16: | |
bd1ea41b | 1105 | case R_390_GOTPLT20: |
5236c819 MS |
1106 | case R_390_GOTPLT32: |
1107 | case R_390_GOTPLTENT: | |
1108 | /* This symbol requires either a procedure linkage table entry | |
1109 | or an entry in the local got. We actually build the entry | |
1110 | in adjust_dynamic_symbol because whether this is really a | |
1111 | global reference can change and with it the fact if we have | |
1112 | to create a plt entry or a local got entry. To be able to | |
1113 | make a once global symbol a local one we have to keep track | |
1114 | of the number of gotplt references that exist for this | |
1115 | symbol. */ | |
1116 | if (h != NULL) | |
1117 | { | |
1118 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++; | |
f5385ebf | 1119 | h->needs_plt = 1; |
5236c819 MS |
1120 | h->plt.refcount += 1; |
1121 | } | |
1122 | else | |
1123 | local_got_refcounts[r_symndx] += 1; | |
a85d7ed0 NC |
1124 | break; |
1125 | ||
69fc87f1 MS |
1126 | case R_390_TLS_LDM32: |
1127 | htab->tls_ldm_got.refcount += 1; | |
1128 | break; | |
1129 | ||
1130 | case R_390_TLS_IE32: | |
1131 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1132 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1133 | case R_390_TLS_GOTIE32: |
1134 | case R_390_TLS_IEENT: | |
0e1862bb | 1135 | if (bfd_link_pic (info)) |
69fc87f1 | 1136 | info->flags |= DF_STATIC_TLS; |
ae9a127f | 1137 | /* Fall through. */ |
69fc87f1 MS |
1138 | |
1139 | case R_390_GOT12: | |
26e41594 | 1140 | case R_390_GOT16: |
bd1ea41b | 1141 | case R_390_GOT20: |
69fc87f1 MS |
1142 | case R_390_GOT32: |
1143 | case R_390_GOTENT: | |
1144 | case R_390_TLS_GD32: | |
1145 | /* This symbol requires a global offset table entry. */ | |
1146 | switch (r_type) | |
1147 | { | |
1148 | default: | |
1149 | case R_390_GOT12: | |
1150 | case R_390_GOT16: | |
bd1ea41b | 1151 | case R_390_GOT20: |
69fc87f1 MS |
1152 | case R_390_GOT32: |
1153 | case R_390_GOTENT: | |
1154 | tls_type = GOT_NORMAL; | |
1155 | break; | |
1156 | case R_390_TLS_GD32: | |
1157 | tls_type = GOT_TLS_GD; | |
1158 | break; | |
1159 | case R_390_TLS_IE32: | |
1160 | case R_390_TLS_GOTIE32: | |
1161 | tls_type = GOT_TLS_IE; | |
1162 | break; | |
1163 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1164 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1165 | case R_390_TLS_IEENT: |
1166 | tls_type = GOT_TLS_IE_NLT; | |
1167 | break; | |
1168 | } | |
1169 | ||
1170 | if (h != NULL) | |
1171 | { | |
1172 | h->got.refcount += 1; | |
1173 | old_tls_type = elf_s390_hash_entry(h)->tls_type; | |
1174 | } | |
1175 | else | |
1176 | { | |
1177 | local_got_refcounts[r_symndx] += 1; | |
1178 | old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx]; | |
1179 | } | |
1180 | /* If a TLS symbol is accessed using IE at least once, | |
1181 | there is no point to use dynamic model for it. */ | |
1182 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN) | |
1183 | { | |
1184 | if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL) | |
1185 | { | |
4eca0228 | 1186 | _bfd_error_handler |
695344c0 | 1187 | /* xgettext:c-format */ |
871b3ab2 | 1188 | (_("%pB: `%s' accessed both as normal and thread local symbol"), |
d003868e | 1189 | abfd, h->root.root.string); |
69fc87f1 MS |
1190 | return FALSE; |
1191 | } | |
1192 | if (old_tls_type > tls_type) | |
1193 | tls_type = old_tls_type; | |
1194 | } | |
1195 | ||
1196 | if (old_tls_type != tls_type) | |
1197 | { | |
1198 | if (h != NULL) | |
1199 | elf_s390_hash_entry (h)->tls_type = tls_type; | |
1200 | else | |
1201 | elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1202 | } | |
1203 | ||
1204 | if (r_type != R_390_TLS_IE32) | |
1205 | break; | |
ae9a127f | 1206 | /* Fall through. */ |
69fc87f1 MS |
1207 | |
1208 | case R_390_TLS_LE32: | |
e00d879a AK |
1209 | /* For static linking and executables this reloc will be |
1210 | calculated at linktime otherwise a TLS_TPOFF runtime | |
1211 | reloc will be generated. */ | |
0e1862bb | 1212 | if (r_type == R_390_TLS_LE32 && bfd_link_pie (info)) |
e00d879a AK |
1213 | break; |
1214 | ||
0e1862bb | 1215 | if (!bfd_link_pic (info)) |
69fc87f1 MS |
1216 | break; |
1217 | info->flags |= DF_STATIC_TLS; | |
ae9a127f | 1218 | /* Fall through. */ |
69fc87f1 | 1219 | |
26e41594 AM |
1220 | case R_390_8: |
1221 | case R_390_16: | |
a85d7ed0 | 1222 | case R_390_32: |
26e41594 | 1223 | case R_390_PC16: |
fb798c50 | 1224 | case R_390_PC12DBL: |
26e41594 | 1225 | case R_390_PC16DBL: |
fb798c50 | 1226 | case R_390_PC24DBL: |
befc3abb | 1227 | case R_390_PC32DBL: |
a85d7ed0 | 1228 | case R_390_PC32: |
99ba5125 | 1229 | if (h != NULL && bfd_link_executable (info)) |
0451c93c MS |
1230 | { |
1231 | /* If this reloc is in a read-only section, we might | |
1232 | need a copy reloc. We can't check reliably at this | |
1233 | stage whether the section is read-only, as input | |
1234 | sections have not yet been mapped to output sections. | |
1235 | Tentatively set the flag for now, and correct in | |
1236 | adjust_dynamic_symbol. */ | |
f5385ebf | 1237 | h->non_got_ref = 1; |
ec338859 | 1238 | |
0e1862bb | 1239 | if (!bfd_link_pic (info)) |
470b557a AK |
1240 | { |
1241 | /* We may need a .plt entry if the function this reloc | |
1242 | refers to is in a shared lib. */ | |
1243 | h->plt.refcount += 1; | |
1244 | } | |
0451c93c | 1245 | } |
a85d7ed0 NC |
1246 | |
1247 | /* If we are creating a shared library, and this is a reloc | |
0451c93c MS |
1248 | against a global symbol, or a non PC relative reloc |
1249 | against a local symbol, then we need to copy the reloc | |
1250 | into the shared library. However, if we are linking with | |
1251 | -Bsymbolic, we do not need to copy a reloc against a | |
1252 | global symbol which is defined in an object we are | |
1253 | including in the link (i.e., DEF_REGULAR is set). At | |
1254 | this point we have not seen all the input files, so it is | |
1255 | possible that DEF_REGULAR is not set now but will be set | |
1256 | later (it is never cleared). In case of a weak definition, | |
1257 | DEF_REGULAR may be cleared later by a strong definition in | |
1258 | a shared library. We account for that possibility below by | |
1259 | storing information in the relocs_copied field of the hash | |
1260 | table entry. A similar situation occurs when creating | |
1261 | shared libraries and symbol visibility changes render the | |
1262 | symbol local. | |
1263 | ||
1264 | If on the other hand, we are creating an executable, we | |
1265 | may need to keep relocations for symbols satisfied by a | |
1266 | dynamic library if we manage to avoid copy relocs for the | |
1267 | symbol. */ | |
0e1862bb | 1268 | if ((bfd_link_pic (info) |
0451c93c | 1269 | && (sec->flags & SEC_ALLOC) != 0 |
ec338859 | 1270 | && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16 |
fb798c50 | 1271 | && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL |
0451c93c | 1272 | && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL |
fb798c50 | 1273 | && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL |
befc3abb | 1274 | && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL |
0451c93c MS |
1275 | && ELF32_R_TYPE (rel->r_info) != R_390_PC32) |
1276 | || (h != NULL | |
8c21ca21 | 1277 | && (! SYMBOLIC_BIND (info, h) |
0451c93c | 1278 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1279 | || !h->def_regular)))) |
64285810 | 1280 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 1281 | && !bfd_link_pic (info) |
0451c93c MS |
1282 | && (sec->flags & SEC_ALLOC) != 0 |
1283 | && h != NULL | |
1284 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 1285 | || !h->def_regular))) |
a85d7ed0 | 1286 | { |
00d8c7a9 AK |
1287 | struct elf_dyn_relocs *p; |
1288 | struct elf_dyn_relocs **head; | |
ec338859 | 1289 | |
0451c93c MS |
1290 | /* We must copy these reloc types into the output file. |
1291 | Create a reloc section in dynobj and make room for | |
1292 | this reloc. */ | |
a85d7ed0 NC |
1293 | if (sreloc == NULL) |
1294 | { | |
0451c93c MS |
1295 | if (htab->elf.dynobj == NULL) |
1296 | htab->elf.dynobj = abfd; | |
a85d7ed0 | 1297 | |
83bac4b0 NC |
1298 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1299 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE); | |
1300 | ||
a85d7ed0 | 1301 | if (sreloc == NULL) |
83bac4b0 | 1302 | return FALSE; |
a85d7ed0 NC |
1303 | } |
1304 | ||
0451c93c MS |
1305 | /* If this is a global symbol, we count the number of |
1306 | relocations we need for this symbol. */ | |
1307 | if (h != NULL) | |
a85d7ed0 | 1308 | { |
ec338859 | 1309 | head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs; |
0451c93c MS |
1310 | } |
1311 | else | |
1312 | { | |
ec338859 AM |
1313 | /* Track dynamic relocs needed for local syms too. |
1314 | We really need local syms available to do this | |
1315 | easily. Oh well. */ | |
ec338859 | 1316 | asection *s; |
6edfbbad | 1317 | void *vpp; |
ae9a127f | 1318 | |
87d72d41 AM |
1319 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1320 | abfd, r_symndx); | |
1321 | if (isym == NULL) | |
b34976b6 | 1322 | return FALSE; |
ec338859 | 1323 | |
87d72d41 AM |
1324 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
1325 | if (s == NULL) | |
1326 | s = sec; | |
1327 | ||
6edfbbad | 1328 | vpp = &elf_section_data (s)->local_dynrel; |
00d8c7a9 | 1329 | head = (struct elf_dyn_relocs **) vpp; |
ec338859 AM |
1330 | } |
1331 | ||
1332 | p = *head; | |
1333 | if (p == NULL || p->sec != sec) | |
1334 | { | |
1335 | bfd_size_type amt = sizeof *p; | |
ae9a127f | 1336 | |
00d8c7a9 | 1337 | p = ((struct elf_dyn_relocs *) |
ec338859 AM |
1338 | bfd_alloc (htab->elf.dynobj, amt)); |
1339 | if (p == NULL) | |
b34976b6 | 1340 | return FALSE; |
ec338859 AM |
1341 | p->next = *head; |
1342 | *head = p; | |
1343 | p->sec = sec; | |
1344 | p->count = 0; | |
1345 | p->pc_count = 0; | |
a85d7ed0 | 1346 | } |
ec338859 AM |
1347 | |
1348 | p->count += 1; | |
1349 | if (ELF32_R_TYPE (rel->r_info) == R_390_PC16 | |
fb798c50 | 1350 | || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL |
ec338859 | 1351 | || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL |
fb798c50 | 1352 | || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL |
befc3abb | 1353 | || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL |
ec338859 AM |
1354 | || ELF32_R_TYPE (rel->r_info) == R_390_PC32) |
1355 | p->pc_count += 1; | |
a85d7ed0 | 1356 | } |
a85d7ed0 | 1357 | break; |
ec338859 | 1358 | |
a85d7ed0 NC |
1359 | /* This relocation describes the C++ object vtable hierarchy. |
1360 | Reconstruct it for later use during GC. */ | |
26e41594 | 1361 | case R_390_GNU_VTINHERIT: |
c152c796 | 1362 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
26e41594 AM |
1363 | return FALSE; |
1364 | break; | |
ec338859 | 1365 | |
a85d7ed0 NC |
1366 | /* This relocation describes which C++ vtable entries are actually |
1367 | used. Record for later use during GC. */ | |
26e41594 | 1368 | case R_390_GNU_VTENTRY: |
d17e0c6e JB |
1369 | BFD_ASSERT (h != NULL); |
1370 | if (h != NULL | |
1371 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
26e41594 AM |
1372 | return FALSE; |
1373 | break; | |
ec338859 | 1374 | |
a85d7ed0 NC |
1375 | default: |
1376 | break; | |
1377 | } | |
1378 | } | |
1379 | ||
b34976b6 | 1380 | return TRUE; |
a85d7ed0 NC |
1381 | } |
1382 | ||
1383 | /* Return the section that should be marked against GC for a given | |
1384 | relocation. */ | |
1385 | ||
1386 | static asection * | |
07adf181 AM |
1387 | elf_s390_gc_mark_hook (asection *sec, |
1388 | struct bfd_link_info *info, | |
1389 | Elf_Internal_Rela *rel, | |
1390 | struct elf_link_hash_entry *h, | |
1391 | Elf_Internal_Sym *sym) | |
a85d7ed0 NC |
1392 | { |
1393 | if (h != NULL) | |
07adf181 AM |
1394 | switch (ELF32_R_TYPE (rel->r_info)) |
1395 | { | |
1396 | case R_390_GNU_VTINHERIT: | |
1397 | case R_390_GNU_VTENTRY: | |
1398 | return NULL; | |
1399 | } | |
1400 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
a85d7ed0 | 1401 | |
a85d7ed0 NC |
1402 | } |
1403 | ||
5236c819 MS |
1404 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
1405 | entry but we found we will not create any. Called when we find we will | |
1406 | not have any PLT for this symbol, by for example | |
1407 | elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
1408 | or elf_s390_size_dynamic_sections if no dynamic sections will be | |
1409 | created (we're only linking static objects). */ | |
1410 | ||
1411 | static void | |
2c3fc389 | 1412 | elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h) |
5236c819 MS |
1413 | { |
1414 | if (h->elf.root.type == bfd_link_hash_warning) | |
1415 | h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link; | |
1416 | ||
1417 | if (h->gotplt_refcount <= 0) | |
1418 | return; | |
1419 | ||
1420 | /* We simply add the number of gotplt references to the number | |
1421 | * of got references for this symbol. */ | |
1422 | h->elf.got.refcount += h->gotplt_refcount; | |
1423 | h->gotplt_refcount = -1; | |
1424 | } | |
1425 | ||
63c1f59d AM |
1426 | /* Find dynamic relocs for H that apply to read-only sections. */ |
1427 | ||
1428 | static asection * | |
1429 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
1430 | { | |
1431 | struct elf_dyn_relocs *p; | |
1432 | ||
1433 | for (p = elf_s390_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
1434 | { | |
1435 | asection *s = p->sec->output_section; | |
1436 | ||
1437 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1438 | return p->sec; | |
1439 | } | |
1440 | return NULL; | |
1441 | } | |
1442 | ||
a85d7ed0 NC |
1443 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1444 | regular object. The current definition is in some section of the | |
1445 | dynamic object, but we're not including those sections. We have to | |
1446 | change the definition to something the rest of the link can | |
1447 | understand. */ | |
1448 | ||
b34976b6 | 1449 | static bfd_boolean |
2c3fc389 NC |
1450 | elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info, |
1451 | struct elf_link_hash_entry *h) | |
a85d7ed0 | 1452 | { |
0451c93c | 1453 | struct elf_s390_link_hash_table *htab; |
5474d94f | 1454 | asection *s, *srel; |
a85d7ed0 | 1455 | |
470b557a AK |
1456 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1457 | if (s390_is_ifunc_symbol_p (h)) | |
d8ee9e44 AK |
1458 | { |
1459 | /* All local STT_GNU_IFUNC references must be treated as local | |
1460 | calls via local PLT. */ | |
1461 | if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h)) | |
1462 | { | |
1463 | bfd_size_type pc_count = 0, count = 0; | |
1464 | struct elf_dyn_relocs **pp; | |
1465 | struct elf_s390_link_hash_entry *eh; | |
1466 | struct elf_dyn_relocs *p; | |
1467 | ||
1468 | eh = (struct elf_s390_link_hash_entry *) h; | |
1469 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1470 | { | |
1471 | pc_count += p->pc_count; | |
1472 | p->count -= p->pc_count; | |
1473 | p->pc_count = 0; | |
1474 | count += p->count; | |
1475 | if (p->count == 0) | |
1476 | *pp = p->next; | |
1477 | else | |
1478 | pp = &p->next; | |
1479 | } | |
1480 | ||
1481 | if (pc_count || count) | |
1482 | { | |
1483 | h->needs_plt = 1; | |
1484 | h->non_got_ref = 1; | |
1485 | if (h->plt.refcount <= 0) | |
1486 | h->plt.refcount = 1; | |
1487 | else | |
1488 | h->plt.refcount += 1; | |
1489 | } | |
1490 | } | |
1491 | ||
1492 | if (h->plt.refcount <= 0) | |
1493 | { | |
1494 | h->plt.offset = (bfd_vma) -1; | |
1495 | h->needs_plt = 0; | |
1496 | } | |
1497 | return TRUE; | |
1498 | } | |
470b557a | 1499 | |
a85d7ed0 NC |
1500 | /* If this is a function, put it in the procedure linkage table. We |
1501 | will fill in the contents of the procedure linkage table later | |
cedb70c5 | 1502 | (although we could actually do it here). */ |
a85d7ed0 | 1503 | if (h->type == STT_FUNC |
f5385ebf | 1504 | || h->needs_plt) |
a85d7ed0 | 1505 | { |
0451c93c | 1506 | if (h->plt.refcount <= 0 |
8c21ca21 AK |
1507 | || SYMBOL_CALLS_LOCAL (info, h) |
1508 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1509 | && h->root.type != bfd_link_hash_undefweak)) | |
a85d7ed0 NC |
1510 | { |
1511 | /* This case can occur if we saw a PLT32 reloc in an input | |
26e41594 AM |
1512 | file, but the symbol was never referred to by a dynamic |
1513 | object, or if all references were garbage collected. In | |
a85d7ed0 NC |
1514 | such a case, we don't actually need to build a procedure |
1515 | linkage table, and we can just do a PC32 reloc instead. */ | |
1516 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1517 | h->needs_plt = 0; |
5236c819 | 1518 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
a85d7ed0 NC |
1519 | } |
1520 | ||
b34976b6 | 1521 | return TRUE; |
a85d7ed0 | 1522 | } |
bbd7ec4a | 1523 | else |
0451c93c MS |
1524 | /* It's possible that we incorrectly decided a .plt reloc was |
1525 | needed for an R_390_PC32 reloc to a non-function sym in | |
1526 | check_relocs. We can't decide accurately between function and | |
1527 | non-function syms in check-relocs; Objects loaded later in | |
1528 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1529 | h->plt.offset = (bfd_vma) -1; |
a85d7ed0 NC |
1530 | |
1531 | /* If this is a weak symbol, and there is a real definition, the | |
1532 | processor independent code will have arranged for us to see the | |
1533 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 1534 | if (h->is_weakalias) |
a85d7ed0 | 1535 | { |
60d67dc8 AM |
1536 | struct elf_link_hash_entry *def = weakdef (h); |
1537 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
1538 | h->root.u.def.section = def->root.u.def.section; | |
1539 | h->root.u.def.value = def->root.u.def.value; | |
64285810 | 1540 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
60d67dc8 | 1541 | h->non_got_ref = def->non_got_ref; |
b34976b6 | 1542 | return TRUE; |
a85d7ed0 NC |
1543 | } |
1544 | ||
1545 | /* This is a reference to a symbol defined by a dynamic object which | |
1546 | is not a function. */ | |
1547 | ||
1548 | /* If we are creating a shared library, we must presume that the | |
1549 | only references to the symbol are via the global offset table. | |
1550 | For such cases we need not do anything here; the relocations will | |
1551 | be handled correctly by relocate_section. */ | |
0e1862bb | 1552 | if (bfd_link_pic (info)) |
b34976b6 | 1553 | return TRUE; |
a85d7ed0 NC |
1554 | |
1555 | /* If there are no references to this symbol that do not use the | |
1556 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 1557 | if (!h->non_got_ref) |
b34976b6 | 1558 | return TRUE; |
a85d7ed0 | 1559 | |
0451c93c MS |
1560 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1561 | if (info->nocopyreloc) | |
1562 | { | |
f5385ebf | 1563 | h->non_got_ref = 0; |
b34976b6 | 1564 | return TRUE; |
0451c93c MS |
1565 | } |
1566 | ||
3bf083ed AM |
1567 | /* If we don't find any dynamic relocs in read-only sections, then |
1568 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1569 | if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h)) | |
0451c93c | 1570 | { |
3bf083ed AM |
1571 | h->non_got_ref = 0; |
1572 | return TRUE; | |
0451c93c MS |
1573 | } |
1574 | ||
a85d7ed0 NC |
1575 | /* We must allocate the symbol in our .dynbss section, which will |
1576 | become part of the .bss section of the executable. There will be | |
1577 | an entry for this symbol in the .dynsym section. The dynamic | |
1578 | object will contain position independent code, so all references | |
1579 | from the dynamic object to this symbol will go through the global | |
1580 | offset table. The dynamic linker will use the .dynsym entry to | |
1581 | determine the address it must put in the global offset table, so | |
1582 | both the dynamic object and the regular object will refer to the | |
1583 | same memory location for the variable. */ | |
1584 | ||
0451c93c | 1585 | htab = elf_s390_hash_table (info); |
a85d7ed0 | 1586 | |
0451c93c MS |
1587 | /* We must generate a R_390_COPY reloc to tell the dynamic linker to |
1588 | copy the initial value out of the dynamic object and into the | |
1589 | runtime process image. */ | |
5474d94f AM |
1590 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
1591 | { | |
1592 | s = htab->elf.sdynrelro; | |
1593 | srel = htab->elf.sreldynrelro; | |
1594 | } | |
1595 | else | |
1596 | { | |
1597 | s = htab->elf.sdynbss; | |
1598 | srel = htab->elf.srelbss; | |
1599 | } | |
1d7e9d18 | 1600 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
a85d7ed0 | 1601 | { |
5474d94f | 1602 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1603 | h->needs_copy = 1; |
a85d7ed0 NC |
1604 | } |
1605 | ||
6cabe1ea | 1606 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a85d7ed0 NC |
1607 | } |
1608 | ||
0451c93c MS |
1609 | /* Allocate space in .plt, .got and associated reloc sections for |
1610 | dynamic relocs. */ | |
1611 | ||
b34976b6 | 1612 | static bfd_boolean |
2c3fc389 | 1613 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
0451c93c MS |
1614 | { |
1615 | struct bfd_link_info *info; | |
1616 | struct elf_s390_link_hash_table *htab; | |
470b557a | 1617 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h; |
00d8c7a9 | 1618 | struct elf_dyn_relocs *p; |
0451c93c | 1619 | |
e92d460e | 1620 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1621 | return TRUE; |
0451c93c MS |
1622 | |
1623 | info = (struct bfd_link_info *) inf; | |
1624 | htab = elf_s390_hash_table (info); | |
1625 | ||
470b557a AK |
1626 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
1627 | here if it is defined and referenced in a non-shared object. */ | |
1628 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
61643fba | 1629 | return s390_elf_allocate_ifunc_dyn_relocs (info, h); |
470b557a AK |
1630 | else if (htab->elf.dynamic_sections_created |
1631 | && h->plt.refcount > 0) | |
0451c93c MS |
1632 | { |
1633 | /* Make sure this symbol is output as a dynamic symbol. | |
1634 | Undefined weak syms won't yet be marked as dynamic. */ | |
1635 | if (h->dynindx == -1 | |
f5385ebf | 1636 | && !h->forced_local) |
0451c93c | 1637 | { |
c152c796 | 1638 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1639 | return FALSE; |
0451c93c MS |
1640 | } |
1641 | ||
0e1862bb | 1642 | if (bfd_link_pic (info) |
4ec72bde | 1643 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
0451c93c | 1644 | { |
f41345a7 | 1645 | asection *s = htab->elf.splt; |
0451c93c MS |
1646 | |
1647 | /* If this is the first .plt entry, make room for the special | |
1648 | first entry. */ | |
eea6121a AM |
1649 | if (s->size == 0) |
1650 | s->size += PLT_FIRST_ENTRY_SIZE; | |
0451c93c | 1651 | |
eea6121a | 1652 | h->plt.offset = s->size; |
0451c93c MS |
1653 | |
1654 | /* If this symbol is not defined in a regular file, and we are | |
1655 | not generating a shared library, then set the symbol to this | |
1656 | location in the .plt. This is required to make function | |
1657 | pointers compare as equal between the normal executable and | |
1658 | the shared library. */ | |
0e1862bb | 1659 | if (! bfd_link_pic (info) |
f5385ebf | 1660 | && !h->def_regular) |
0451c93c MS |
1661 | { |
1662 | h->root.u.def.section = s; | |
1663 | h->root.u.def.value = h->plt.offset; | |
1664 | } | |
ec338859 | 1665 | |
0451c93c | 1666 | /* Make room for this entry. */ |
eea6121a | 1667 | s->size += PLT_ENTRY_SIZE; |
ec338859 | 1668 | |
0451c93c MS |
1669 | /* We also need to make an entry in the .got.plt section, which |
1670 | will be placed in the .got section by the linker script. */ | |
f41345a7 | 1671 | htab->elf.sgotplt->size += GOT_ENTRY_SIZE; |
0451c93c MS |
1672 | |
1673 | /* We also need to make an entry in the .rela.plt section. */ | |
f41345a7 | 1674 | htab->elf.srelplt->size += sizeof (Elf32_External_Rela); |
0451c93c MS |
1675 | } |
1676 | else | |
1677 | { | |
07d6d2b8 | 1678 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1679 | h->needs_plt = 0; |
5236c819 | 1680 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c | 1681 | } |
ec338859 | 1682 | } |
0451c93c MS |
1683 | else |
1684 | { | |
1685 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1686 | h->needs_plt = 0; |
5236c819 | 1687 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
ec338859 AM |
1688 | } |
1689 | ||
69fc87f1 MS |
1690 | /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to |
1691 | the binary, we can optimize a bit. IE32 and GOTIE32 get converted | |
1692 | to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT | |
1693 | we can save the dynamic TLS relocation. */ | |
1694 | if (h->got.refcount > 0 | |
0e1862bb | 1695 | && !bfd_link_pic (info) |
69fc87f1 MS |
1696 | && h->dynindx == -1 |
1697 | && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE) | |
0451c93c | 1698 | { |
69fc87f1 MS |
1699 | if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT) |
1700 | /* For the GOTIE access without a literal pool entry the offset has | |
1701 | to be stored somewhere. The immediate value in the instruction | |
1702 | is not bit enough so the value is stored in the got. */ | |
1703 | { | |
f41345a7 AK |
1704 | h->got.offset = htab->elf.sgot->size; |
1705 | htab->elf.sgot->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1706 | } |
1707 | else | |
1708 | h->got.offset = (bfd_vma) -1; | |
1709 | } | |
1710 | else if (h->got.refcount > 0) | |
ceada896 | 1711 | { |
0451c93c | 1712 | asection *s; |
b34976b6 | 1713 | bfd_boolean dyn; |
69fc87f1 | 1714 | int tls_type = elf_s390_hash_entry(h)->tls_type; |
0451c93c MS |
1715 | |
1716 | /* Make sure this symbol is output as a dynamic symbol. | |
1717 | Undefined weak syms won't yet be marked as dynamic. */ | |
1718 | if (h->dynindx == -1 | |
f5385ebf | 1719 | && !h->forced_local) |
0451c93c | 1720 | { |
c152c796 | 1721 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1722 | return FALSE; |
0451c93c MS |
1723 | } |
1724 | ||
f41345a7 | 1725 | s = htab->elf.sgot; |
eea6121a AM |
1726 | h->got.offset = s->size; |
1727 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1728 | /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */ |
1729 | if (tls_type == GOT_TLS_GD) | |
eea6121a | 1730 | s->size += GOT_ENTRY_SIZE; |
0451c93c | 1731 | dyn = htab->elf.dynamic_sections_created; |
69fc87f1 MS |
1732 | /* R_390_TLS_IE32 needs one dynamic relocation, |
1733 | R_390_TLS_GD32 needs one if local symbol and two if global. */ | |
1734 | if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1735 | || tls_type >= GOT_TLS_IE) | |
f41345a7 | 1736 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
69fc87f1 | 1737 | else if (tls_type == GOT_TLS_GD) |
f41345a7 | 1738 | htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela); |
82058a73 MS |
1739 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1740 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 1741 | && (bfd_link_pic (info) |
82058a73 | 1742 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
f41345a7 | 1743 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
0451c93c MS |
1744 | } |
1745 | else | |
1746 | h->got.offset = (bfd_vma) -1; | |
1747 | ||
0451c93c | 1748 | if (eh->dyn_relocs == NULL) |
b34976b6 | 1749 | return TRUE; |
0451c93c MS |
1750 | |
1751 | /* In the shared -Bsymbolic case, discard space allocated for | |
1752 | dynamic pc-relative relocs against symbols which turn out to be | |
1753 | defined in regular objects. For the normal shared case, discard | |
1754 | space for pc-relative relocs that have become local due to symbol | |
1755 | visibility changes. */ | |
1756 | ||
0e1862bb | 1757 | if (bfd_link_pic (info)) |
0451c93c | 1758 | { |
8c21ca21 | 1759 | if (SYMBOL_CALLS_LOCAL (info, h)) |
0451c93c | 1760 | { |
00d8c7a9 | 1761 | struct elf_dyn_relocs **pp; |
0451c93c MS |
1762 | |
1763 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1764 | { | |
1765 | p->count -= p->pc_count; | |
1766 | p->pc_count = 0; | |
1767 | if (p->count == 0) | |
1768 | *pp = p->next; | |
1769 | else | |
1770 | pp = &p->next; | |
1771 | } | |
1772 | } | |
82058a73 MS |
1773 | |
1774 | /* Also discard relocs on undefined weak syms with non-default | |
1775 | visibility. */ | |
22d606e9 | 1776 | if (eh->dyn_relocs != NULL |
82058a73 | 1777 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 | 1778 | { |
b27bb18f L |
1779 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
1780 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
22d606e9 AM |
1781 | eh->dyn_relocs = NULL; |
1782 | ||
1783 | /* Make sure undefined weak symbols are output as a dynamic | |
1784 | symbol in PIEs. */ | |
1785 | else if (h->dynindx == -1 | |
1786 | && !h->forced_local) | |
1787 | { | |
1788 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1789 | return FALSE; | |
1790 | } | |
1791 | } | |
0451c93c | 1792 | } |
64285810 | 1793 | else if (ELIMINATE_COPY_RELOCS) |
0451c93c MS |
1794 | { |
1795 | /* For the non-shared case, discard space for relocs against | |
1796 | symbols which turn out to need copy relocs or are not | |
1797 | dynamic. */ | |
1798 | ||
f5385ebf AM |
1799 | if (!h->non_got_ref |
1800 | && ((h->def_dynamic | |
1801 | && !h->def_regular) | |
0451c93c MS |
1802 | || (htab->elf.dynamic_sections_created |
1803 | && (h->root.type == bfd_link_hash_undefweak | |
1804 | || h->root.type == bfd_link_hash_undefined)))) | |
1805 | { | |
1806 | /* Make sure this symbol is output as a dynamic symbol. | |
1807 | Undefined weak syms won't yet be marked as dynamic. */ | |
1808 | if (h->dynindx == -1 | |
f5385ebf | 1809 | && !h->forced_local) |
0451c93c | 1810 | { |
c152c796 | 1811 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1812 | return FALSE; |
0451c93c MS |
1813 | } |
1814 | ||
1815 | /* If that succeeded, we know we'll be keeping all the | |
1816 | relocs. */ | |
1817 | if (h->dynindx != -1) | |
1818 | goto keep; | |
1819 | } | |
1820 | ||
1821 | eh->dyn_relocs = NULL; | |
1822 | ||
ec338859 | 1823 | keep: ; |
0451c93c MS |
1824 | } |
1825 | ||
1826 | /* Finally, allocate space. */ | |
1827 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1828 | { | |
1829 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
ae9a127f | 1830 | |
eea6121a | 1831 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
0451c93c MS |
1832 | } |
1833 | ||
b34976b6 | 1834 | return TRUE; |
0451c93c MS |
1835 | } |
1836 | ||
63c1f59d AM |
1837 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
1838 | read-only sections. */ | |
0451c93c | 1839 | |
b34976b6 | 1840 | static bfd_boolean |
63c1f59d | 1841 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
0451c93c | 1842 | { |
63c1f59d | 1843 | asection *sec; |
0451c93c | 1844 | |
63c1f59d AM |
1845 | if (h->root.type == bfd_link_hash_indirect) |
1846 | return TRUE; | |
0451c93c | 1847 | |
63c1f59d AM |
1848 | sec = readonly_dynrelocs (h); |
1849 | if (sec != NULL) | |
1850 | { | |
1851 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; | |
0451c93c | 1852 | |
63c1f59d AM |
1853 | info->flags |= DF_TEXTREL; |
1854 | info->callbacks->minfo | |
c1c8c1ef | 1855 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 1856 | sec->owner, h->root.root.string, sec); |
0451c93c | 1857 | |
63c1f59d AM |
1858 | /* Not an error, just cut short the traversal. */ |
1859 | return FALSE; | |
0451c93c | 1860 | } |
b34976b6 | 1861 | return TRUE; |
0451c93c MS |
1862 | } |
1863 | ||
a85d7ed0 NC |
1864 | /* Set the sizes of the dynamic sections. */ |
1865 | ||
b34976b6 | 1866 | static bfd_boolean |
2c3fc389 NC |
1867 | elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
1868 | struct bfd_link_info *info) | |
a85d7ed0 | 1869 | { |
0451c93c | 1870 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
1871 | bfd *dynobj; |
1872 | asection *s; | |
b34976b6 | 1873 | bfd_boolean relocs; |
0451c93c | 1874 | bfd *ibfd; |
a85d7ed0 | 1875 | |
0451c93c MS |
1876 | htab = elf_s390_hash_table (info); |
1877 | dynobj = htab->elf.dynobj; | |
1878 | if (dynobj == NULL) | |
1879 | abort (); | |
a85d7ed0 | 1880 | |
0451c93c | 1881 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
1882 | { |
1883 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 1884 | if (bfd_link_executable (info) && !info->nointerp) |
a85d7ed0 | 1885 | { |
3d4d4302 | 1886 | s = bfd_get_linker_section (dynobj, ".interp"); |
0451c93c MS |
1887 | if (s == NULL) |
1888 | abort (); | |
eea6121a | 1889 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
a85d7ed0 NC |
1890 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1891 | } | |
1892 | } | |
a85d7ed0 | 1893 | |
0451c93c MS |
1894 | /* Set up .got offsets for local syms, and space for local dynamic |
1895 | relocs. */ | |
c72f2fb2 | 1896 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a85d7ed0 | 1897 | { |
0451c93c MS |
1898 | bfd_signed_vma *local_got; |
1899 | bfd_signed_vma *end_local_got; | |
69fc87f1 | 1900 | char *local_tls_type; |
0451c93c MS |
1901 | bfd_size_type locsymcount; |
1902 | Elf_Internal_Shdr *symtab_hdr; | |
1903 | asection *srela; | |
470b557a AK |
1904 | struct plt_entry *local_plt; |
1905 | unsigned int i; | |
a85d7ed0 | 1906 | |
0ffa91dd | 1907 | if (! is_s390_elf (ibfd)) |
a85d7ed0 NC |
1908 | continue; |
1909 | ||
0451c93c | 1910 | for (s = ibfd->sections; s != NULL; s = s->next) |
a85d7ed0 | 1911 | { |
00d8c7a9 | 1912 | struct elf_dyn_relocs *p; |
0451c93c | 1913 | |
6edfbbad | 1914 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
a85d7ed0 | 1915 | { |
ec338859 AM |
1916 | if (!bfd_is_abs_section (p->sec) |
1917 | && bfd_is_abs_section (p->sec->output_section)) | |
1918 | { | |
1919 | /* Input section has been discarded, either because | |
1920 | it is a copy of a linkonce section or due to | |
1921 | linker script /DISCARD/, so we'll be discarding | |
1922 | the relocs too. */ | |
1923 | } | |
248866a8 | 1924 | else if (p->count != 0) |
ec338859 AM |
1925 | { |
1926 | srela = elf_section_data (p->sec)->sreloc; | |
eea6121a | 1927 | srela->size += p->count * sizeof (Elf32_External_Rela); |
248866a8 AM |
1928 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
1929 | info->flags |= DF_TEXTREL; | |
ec338859 | 1930 | } |
a85d7ed0 NC |
1931 | } |
1932 | } | |
0451c93c MS |
1933 | |
1934 | local_got = elf_local_got_refcounts (ibfd); | |
1935 | if (!local_got) | |
1936 | continue; | |
1937 | ||
0ffa91dd | 1938 | symtab_hdr = &elf_symtab_hdr (ibfd); |
0451c93c MS |
1939 | locsymcount = symtab_hdr->sh_info; |
1940 | end_local_got = local_got + locsymcount; | |
69fc87f1 | 1941 | local_tls_type = elf_s390_local_got_tls_type (ibfd); |
f41345a7 AK |
1942 | s = htab->elf.sgot; |
1943 | srela = htab->elf.srelgot; | |
69fc87f1 | 1944 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
a85d7ed0 | 1945 | { |
0451c93c | 1946 | if (*local_got > 0) |
a85d7ed0 | 1947 | { |
eea6121a AM |
1948 | *local_got = s->size; |
1949 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 | 1950 | if (*local_tls_type == GOT_TLS_GD) |
eea6121a | 1951 | s->size += GOT_ENTRY_SIZE; |
0e1862bb | 1952 | if (bfd_link_pic (info)) |
eea6121a | 1953 | srela->size += sizeof (Elf32_External_Rela); |
a85d7ed0 NC |
1954 | } |
1955 | else | |
0451c93c MS |
1956 | *local_got = (bfd_vma) -1; |
1957 | } | |
470b557a AK |
1958 | local_plt = elf_s390_local_plt (ibfd); |
1959 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
1960 | { | |
1961 | if (local_plt[i].plt.refcount > 0) | |
1962 | { | |
1963 | local_plt[i].plt.offset = htab->elf.iplt->size; | |
1964 | htab->elf.iplt->size += PLT_ENTRY_SIZE; | |
1965 | htab->elf.igotplt->size += GOT_ENTRY_SIZE; | |
1966 | htab->elf.irelplt->size += RELA_ENTRY_SIZE; | |
1967 | } | |
1968 | else | |
07d6d2b8 | 1969 | local_plt[i].plt.offset = (bfd_vma) -1; |
470b557a | 1970 | } |
0451c93c MS |
1971 | } |
1972 | ||
69fc87f1 MS |
1973 | if (htab->tls_ldm_got.refcount > 0) |
1974 | { | |
1975 | /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32 | |
1976 | relocs. */ | |
f41345a7 AK |
1977 | htab->tls_ldm_got.offset = htab->elf.sgot->size; |
1978 | htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE; | |
1979 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); | |
69fc87f1 MS |
1980 | } |
1981 | else | |
1982 | htab->tls_ldm_got.offset = -1; | |
1983 | ||
0451c93c MS |
1984 | /* Allocate global sym .plt and .got entries, and space for global |
1985 | sym dynamic relocs. */ | |
2c3fc389 | 1986 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
0451c93c MS |
1987 | |
1988 | /* We now have determined the sizes of the various dynamic sections. | |
1989 | Allocate memory for them. */ | |
b34976b6 | 1990 | relocs = FALSE; |
0451c93c MS |
1991 | for (s = dynobj->sections; s != NULL; s = s->next) |
1992 | { | |
1993 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1994 | continue; | |
1995 | ||
f41345a7 AK |
1996 | if (s == htab->elf.splt |
1997 | || s == htab->elf.sgot | |
1998 | || s == htab->elf.sgotplt | |
9d19e4fd | 1999 | || s == htab->elf.sdynbss |
5474d94f | 2000 | || s == htab->elf.sdynrelro |
470b557a AK |
2001 | || s == htab->elf.iplt |
2002 | || s == htab->elf.igotplt | |
2003 | || s == htab->irelifunc) | |
0451c93c MS |
2004 | { |
2005 | /* Strip this section if we don't need it; see the | |
2006 | comment below. */ | |
a85d7ed0 | 2007 | } |
0112cd26 | 2008 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
0451c93c | 2009 | { |
eea6121a | 2010 | if (s->size != 0) |
b34976b6 | 2011 | relocs = TRUE; |
ec338859 | 2012 | |
0451c93c MS |
2013 | /* We use the reloc_count field as a counter if we need |
2014 | to copy relocs into the output file. */ | |
2015 | s->reloc_count = 0; | |
2016 | } | |
2017 | else | |
a85d7ed0 NC |
2018 | { |
2019 | /* It's not one of our sections, so don't allocate space. */ | |
2020 | continue; | |
2021 | } | |
2022 | ||
eea6121a | 2023 | if (s->size == 0) |
a85d7ed0 | 2024 | { |
0451c93c MS |
2025 | /* If we don't need this section, strip it from the |
2026 | output file. This is to handle .rela.bss and | |
2027 | .rela.plt. We must create it in | |
2028 | create_dynamic_sections, because it must be created | |
2029 | before the linker maps input sections to output | |
2030 | sections. The linker does that before | |
2031 | adjust_dynamic_symbol is called, and it is that | |
2032 | function which decides whether anything needs to go | |
2033 | into these sections. */ | |
2034 | ||
8423293d | 2035 | s->flags |= SEC_EXCLUDE; |
a85d7ed0 NC |
2036 | continue; |
2037 | } | |
2038 | ||
c456f082 AM |
2039 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2040 | continue; | |
2041 | ||
0451c93c MS |
2042 | /* Allocate memory for the section contents. We use bfd_zalloc |
2043 | here in case unused entries are not reclaimed before the | |
2044 | section's contents are written out. This should not happen, | |
2045 | but this way if it does, we get a R_390_NONE reloc instead | |
2046 | of garbage. */ | |
eea6121a | 2047 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
0451c93c | 2048 | if (s->contents == NULL) |
b34976b6 | 2049 | return FALSE; |
a85d7ed0 | 2050 | } |
ec338859 | 2051 | |
0451c93c | 2052 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
2053 | { |
2054 | /* Add some entries to the .dynamic section. We fill in the | |
2055 | values later, in elf_s390_finish_dynamic_sections, but we | |
2056 | must add the entries now so that we get the correct size for | |
2057 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2058 | dynamic linker and used by the debugger. */ | |
dc810e39 | 2059 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2060 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
ec338859 | 2061 | |
0e1862bb | 2062 | if (bfd_link_executable (info)) |
a85d7ed0 | 2063 | { |
dc810e39 | 2064 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2065 | return FALSE; |
a85d7ed0 | 2066 | } |
ec338859 | 2067 | |
f41345a7 | 2068 | if (htab->elf.splt->size != 0) |
a85d7ed0 | 2069 | { |
dc810e39 AM |
2070 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2071 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2072 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2073 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2074 | return FALSE; |
a85d7ed0 | 2075 | } |
ec338859 | 2076 | |
a85d7ed0 | 2077 | if (relocs) |
26e41594 AM |
2078 | { |
2079 | if (!add_dynamic_entry (DT_RELA, 0) | |
2080 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2081 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 2082 | return FALSE; |
a85d7ed0 | 2083 | |
0451c93c MS |
2084 | /* If any dynamic relocs apply to a read-only section, |
2085 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 2086 | if ((info->flags & DF_TEXTREL) == 0) |
63c1f59d | 2087 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
ec338859 | 2088 | |
0451c93c MS |
2089 | if ((info->flags & DF_TEXTREL) != 0) |
2090 | { | |
2091 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2092 | return FALSE; |
0451c93c | 2093 | } |
a85d7ed0 NC |
2094 | } |
2095 | } | |
dc810e39 | 2096 | #undef add_dynamic_entry |
ec338859 | 2097 | |
b34976b6 | 2098 | return TRUE; |
a85d7ed0 NC |
2099 | } |
2100 | ||
69fc87f1 MS |
2101 | /* Return the base VMA address which should be subtracted from real addresses |
2102 | when resolving @dtpoff relocation. | |
2103 | This is PT_TLS segment p_vaddr. */ | |
2104 | ||
2105 | static bfd_vma | |
2c3fc389 | 2106 | dtpoff_base (struct bfd_link_info *info) |
69fc87f1 | 2107 | { |
e1918d23 AM |
2108 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2109 | if (elf_hash_table (info)->tls_sec == NULL) | |
69fc87f1 | 2110 | return 0; |
e1918d23 | 2111 | return elf_hash_table (info)->tls_sec->vma; |
69fc87f1 MS |
2112 | } |
2113 | ||
2114 | /* Return the relocation value for @tpoff relocation | |
2115 | if STT_TLS virtual address is ADDRESS. */ | |
2116 | ||
2117 | static bfd_vma | |
2c3fc389 | 2118 | tpoff (struct bfd_link_info *info, bfd_vma address) |
69fc87f1 | 2119 | { |
e1918d23 | 2120 | struct elf_link_hash_table *htab = elf_hash_table (info); |
69fc87f1 | 2121 | |
e1918d23 AM |
2122 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2123 | if (htab->tls_sec == NULL) | |
69fc87f1 | 2124 | return 0; |
e1918d23 | 2125 | return htab->tls_size + htab->tls_sec->vma - address; |
69fc87f1 MS |
2126 | } |
2127 | ||
2128 | /* Complain if TLS instruction relocation is against an invalid | |
2129 | instruction. */ | |
2130 | ||
2131 | static void | |
2c3fc389 NC |
2132 | invalid_tls_insn (bfd *input_bfd, |
2133 | asection *input_section, | |
2134 | Elf_Internal_Rela *rel) | |
69fc87f1 MS |
2135 | { |
2136 | reloc_howto_type *howto; | |
2137 | ||
2138 | howto = elf_howto_table + ELF32_R_TYPE (rel->r_info); | |
4eca0228 | 2139 | _bfd_error_handler |
695344c0 | 2140 | /* xgettext:c-format */ |
2dcf00ce | 2141 | (_("%pB(%pA+%#" PRIx64 "): invalid instruction for TLS relocation %s"), |
d003868e AM |
2142 | input_bfd, |
2143 | input_section, | |
2dcf00ce | 2144 | (uint64_t) rel->r_offset, |
69fc87f1 | 2145 | howto->name); |
77df2968 | 2146 | bfd_set_error (bfd_error_bad_value); |
69fc87f1 MS |
2147 | } |
2148 | ||
a85d7ed0 NC |
2149 | /* Relocate a 390 ELF section. */ |
2150 | ||
b34976b6 | 2151 | static bfd_boolean |
2c3fc389 NC |
2152 | elf_s390_relocate_section (bfd *output_bfd, |
2153 | struct bfd_link_info *info, | |
2154 | bfd *input_bfd, | |
2155 | asection *input_section, | |
2156 | bfd_byte *contents, | |
2157 | Elf_Internal_Rela *relocs, | |
2158 | Elf_Internal_Sym *local_syms, | |
2159 | asection **local_sections) | |
a85d7ed0 | 2160 | { |
0451c93c | 2161 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
2162 | Elf_Internal_Shdr *symtab_hdr; |
2163 | struct elf_link_hash_entry **sym_hashes; | |
2164 | bfd_vma *local_got_offsets; | |
a85d7ed0 NC |
2165 | Elf_Internal_Rela *rel; |
2166 | Elf_Internal_Rela *relend; | |
2167 | ||
0ffa91dd NC |
2168 | BFD_ASSERT (is_s390_elf (input_bfd)); |
2169 | ||
0451c93c | 2170 | htab = elf_s390_hash_table (info); |
0ffa91dd | 2171 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
a85d7ed0 NC |
2172 | sym_hashes = elf_sym_hashes (input_bfd); |
2173 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2174 | ||
a85d7ed0 NC |
2175 | rel = relocs; |
2176 | relend = relocs + input_section->reloc_count; | |
2177 | for (; rel < relend; rel++) | |
2178 | { | |
5236c819 | 2179 | unsigned int r_type; |
a85d7ed0 NC |
2180 | reloc_howto_type *howto; |
2181 | unsigned long r_symndx; | |
2182 | struct elf_link_hash_entry *h; | |
2183 | Elf_Internal_Sym *sym; | |
2184 | asection *sec; | |
0451c93c | 2185 | bfd_vma off; |
a85d7ed0 | 2186 | bfd_vma relocation; |
b34976b6 | 2187 | bfd_boolean unresolved_reloc; |
a85d7ed0 | 2188 | bfd_reloc_status_type r; |
69fc87f1 | 2189 | int tls_type; |
470b557a | 2190 | asection *base_got = htab->elf.sgot; |
b27bb18f | 2191 | bfd_boolean resolved_to_zero; |
ec338859 | 2192 | |
a85d7ed0 NC |
2193 | r_type = ELF32_R_TYPE (rel->r_info); |
2194 | if (r_type == (int) R_390_GNU_VTINHERIT | |
26e41594 AM |
2195 | || r_type == (int) R_390_GNU_VTENTRY) |
2196 | continue; | |
5236c819 | 2197 | if (r_type >= (int) R_390_max) |
a85d7ed0 NC |
2198 | { |
2199 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2200 | return FALSE; |
a85d7ed0 | 2201 | } |
ec338859 | 2202 | |
b491616a | 2203 | howto = elf_howto_table + r_type; |
a85d7ed0 | 2204 | r_symndx = ELF32_R_SYM (rel->r_info); |
5236c819 | 2205 | |
a85d7ed0 NC |
2206 | h = NULL; |
2207 | sym = NULL; | |
2208 | sec = NULL; | |
b34976b6 | 2209 | unresolved_reloc = FALSE; |
a85d7ed0 NC |
2210 | if (r_symndx < symtab_hdr->sh_info) |
2211 | { | |
2212 | sym = local_syms + r_symndx; | |
2213 | sec = local_sections[r_symndx]; | |
470b557a AK |
2214 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
2215 | { | |
2216 | struct plt_entry *local_plt = elf_s390_local_plt (input_bfd); | |
2217 | if (local_plt == NULL) | |
2218 | return FALSE; | |
2219 | ||
2220 | /* Address of the PLT slot. */ | |
2221 | relocation = (htab->elf.iplt->output_section->vma | |
2222 | + htab->elf.iplt->output_offset | |
2223 | + local_plt[r_symndx].plt.offset); | |
2224 | ||
2225 | switch (r_type) | |
2226 | { | |
31db78f6 AK |
2227 | case R_390_PLTOFF16: |
2228 | case R_390_PLTOFF32: | |
2229 | relocation -= htab->elf.sgot->output_section->vma; | |
2230 | break; | |
470b557a AK |
2231 | case R_390_GOTPLT12: |
2232 | case R_390_GOTPLT16: | |
2233 | case R_390_GOTPLT20: | |
2234 | case R_390_GOTPLT32: | |
2235 | case R_390_GOTPLTENT: | |
2236 | case R_390_GOT12: | |
2237 | case R_390_GOT16: | |
2238 | case R_390_GOT20: | |
2239 | case R_390_GOT32: | |
2240 | case R_390_GOTENT: | |
2241 | { | |
2242 | /* Write the PLT slot address into the GOT slot. */ | |
2243 | bfd_put_32 (output_bfd, relocation, | |
2244 | htab->elf.sgot->contents + | |
2245 | local_got_offsets[r_symndx]); | |
2246 | relocation = (local_got_offsets[r_symndx] + | |
2247 | htab->elf.sgot->output_offset); | |
2248 | ||
2249 | if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT) | |
2250 | relocation += htab->elf.sgot->output_section->vma; | |
2251 | break; | |
2252 | } | |
2253 | default: | |
2254 | break; | |
2255 | } | |
2256 | /* The output section is needed later in | |
2257 | finish_dynamic_section when creating the dynamic | |
2258 | relocation. */ | |
2259 | local_plt[r_symndx].sec = sec; | |
2260 | goto do_relocation; | |
2261 | } | |
2262 | else | |
2263 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
a85d7ed0 NC |
2264 | } |
2265 | else | |
2266 | { | |
560e09e9 | 2267 | bfd_boolean warned ATTRIBUTE_UNUSED; |
62d887d4 | 2268 | bfd_boolean ignored ATTRIBUTE_UNUSED; |
ec338859 | 2269 | |
b2a8e766 AM |
2270 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2271 | r_symndx, symtab_hdr, sym_hashes, | |
2272 | h, sec, relocation, | |
62d887d4 | 2273 | unresolved_reloc, warned, ignored); |
a85d7ed0 | 2274 | } |
ec338859 | 2275 | |
dbaa2011 | 2276 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 2277 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 2278 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 2279 | |
0e1862bb | 2280 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
2281 | continue; |
2282 | ||
b27bb18f L |
2283 | resolved_to_zero = (h != NULL |
2284 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
2285 | ||
a85d7ed0 NC |
2286 | switch (r_type) |
2287 | { | |
5236c819 MS |
2288 | case R_390_GOTPLT12: |
2289 | case R_390_GOTPLT16: | |
bd1ea41b | 2290 | case R_390_GOTPLT20: |
5236c819 MS |
2291 | case R_390_GOTPLT32: |
2292 | case R_390_GOTPLTENT: | |
2293 | /* There are three cases for a GOTPLT relocation. 1) The | |
2294 | relocation is against the jump slot entry of a plt that | |
2295 | will get emitted to the output file. 2) The relocation | |
2296 | is against the jump slot of a plt entry that has been | |
2297 | removed. elf_s390_adjust_gotplt has created a GOT entry | |
2298 | as replacement. 3) The relocation is against a local symbol. | |
2299 | Cases 2) and 3) are the same as the GOT relocation code | |
2300 | so we just have to test for case 1 and fall through for | |
2301 | the other two. */ | |
2302 | if (h != NULL && h->plt.offset != (bfd_vma) -1) | |
2303 | { | |
2304 | bfd_vma plt_index; | |
2305 | ||
470b557a AK |
2306 | if (s390_is_ifunc_symbol_p (h)) |
2307 | { | |
2308 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; | |
2309 | relocation = (plt_index * GOT_ENTRY_SIZE + | |
2310 | htab->elf.igotplt->output_offset); | |
2311 | if (r_type == R_390_GOTPLTENT) | |
2312 | relocation += htab->elf.igotplt->output_section->vma; | |
2313 | } | |
2314 | else | |
2315 | { | |
2316 | /* Calc. index no. | |
2317 | Current offset - size first entry / entry size. */ | |
2318 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / | |
2319 | PLT_ENTRY_SIZE; | |
2320 | ||
2321 | /* Offset in GOT is PLT index plus GOT headers(3) | |
2322 | times 4, addr & GOT addr. */ | |
2323 | relocation = (plt_index + 3) * GOT_ENTRY_SIZE; | |
2324 | if (r_type == R_390_GOTPLTENT) | |
2325 | relocation += htab->elf.sgot->output_section->vma; | |
2326 | } | |
5236c819 MS |
2327 | unresolved_reloc = FALSE; |
2328 | ||
5236c819 MS |
2329 | } |
2330 | /* Fall through. */ | |
2331 | ||
26e41594 AM |
2332 | case R_390_GOT12: |
2333 | case R_390_GOT16: | |
bd1ea41b | 2334 | case R_390_GOT20: |
26e41594 | 2335 | case R_390_GOT32: |
befc3abb | 2336 | case R_390_GOTENT: |
26e41594 AM |
2337 | /* Relocation is to the entry for this symbol in the global |
2338 | offset table. */ | |
470b557a | 2339 | if (base_got == NULL) |
0451c93c | 2340 | abort (); |
ec338859 | 2341 | |
26e41594 AM |
2342 | if (h != NULL) |
2343 | { | |
b34976b6 | 2344 | bfd_boolean dyn; |
ec338859 | 2345 | |
26e41594 | 2346 | off = h->got.offset; |
0451c93c | 2347 | dyn = htab->elf.dynamic_sections_created; |
470b557a AK |
2348 | |
2349 | if (s390_is_ifunc_symbol_p (h)) | |
2350 | { | |
2351 | BFD_ASSERT (h->plt.offset != (bfd_vma) -1); | |
2352 | if (off == (bfd_vma)-1) | |
2353 | { | |
2354 | /* No explicit GOT usage so redirect to the | |
2355 | got.iplt slot. */ | |
2356 | base_got = htab->elf.igotplt; | |
2357 | off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE; | |
2358 | } | |
2359 | else | |
2360 | { | |
2361 | /* Explicit GOT slots must contain the address | |
2362 | of the PLT slot. This will be handled in | |
2363 | finish_dynamic_symbol. */ | |
2364 | } | |
2365 | } | |
0e1862bb L |
2366 | else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
2367 | bfd_link_pic (info), | |
2368 | h) | |
2369 | || (bfd_link_pic (info) | |
470b557a AK |
2370 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
2371 | || (ELF_ST_VISIBILITY (h->other) | |
2372 | && h->root.type == bfd_link_hash_undefweak)) | |
2373 | ||
26e41594 AM |
2374 | { |
2375 | /* This is actually a static link, or it is a | |
2376 | -Bsymbolic link and the symbol is defined | |
2377 | locally, or the symbol was forced to be local | |
2378 | because of a version file. We must initialize | |
2379 | this entry in the global offset table. Since the | |
2380 | offset must always be a multiple of 2, we use the | |
2381 | least significant bit to record whether we have | |
2382 | initialized it already. | |
2383 | ||
2384 | When doing a dynamic link, we create a .rel.got | |
2385 | relocation entry to initialize the value. This | |
2386 | is done in the finish_dynamic_symbol routine. */ | |
2387 | if ((off & 1) != 0) | |
2388 | off &= ~1; | |
2389 | else | |
2390 | { | |
a85d7ed0 | 2391 | bfd_put_32 (output_bfd, relocation, |
470b557a | 2392 | base_got->contents + off); |
26e41594 AM |
2393 | h->got.offset |= 1; |
2394 | } | |
a63cc5f7 AK |
2395 | |
2396 | if ((h->def_regular | |
0e1862bb | 2397 | && bfd_link_pic (info) |
a63cc5f7 AK |
2398 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
2399 | /* lrl rx,sym@GOTENT -> larl rx, sym */ | |
2400 | && ((r_type == R_390_GOTENT | |
2401 | && (bfd_get_16 (input_bfd, | |
2402 | contents + rel->r_offset - 2) | |
2403 | & 0xff0f) == 0xc40d) | |
2404 | /* ly rx, sym@GOT(r12) -> larl rx, sym */ | |
2405 | || (r_type == R_390_GOT20 | |
2406 | && (bfd_get_32 (input_bfd, | |
2407 | contents + rel->r_offset - 2) | |
2408 | & 0xff00f000) == 0xe300c000 | |
2409 | && bfd_get_8 (input_bfd, | |
2410 | contents + rel->r_offset + 3) == 0x58))) | |
2411 | { | |
2412 | unsigned short new_insn = | |
2413 | (0xc000 | (bfd_get_8 (input_bfd, | |
2414 | contents + rel->r_offset - 1) & 0xf0)); | |
2415 | bfd_put_16 (output_bfd, new_insn, | |
2416 | contents + rel->r_offset - 2); | |
2417 | r_type = R_390_PC32DBL; | |
2418 | rel->r_addend = 2; | |
2419 | howto = elf_howto_table + r_type; | |
2420 | relocation = h->root.u.def.value | |
2421 | + h->root.u.def.section->output_section->vma | |
2422 | + h->root.u.def.section->output_offset; | |
2423 | goto do_relocation; | |
2424 | } | |
26e41594 | 2425 | } |
0451c93c | 2426 | else |
b34976b6 | 2427 | unresolved_reloc = FALSE; |
26e41594 AM |
2428 | } |
2429 | else | |
2430 | { | |
0451c93c MS |
2431 | if (local_got_offsets == NULL) |
2432 | abort (); | |
a85d7ed0 | 2433 | |
26e41594 | 2434 | off = local_got_offsets[r_symndx]; |
a85d7ed0 | 2435 | |
26e41594 AM |
2436 | /* The offset must always be a multiple of 4. We use |
2437 | the least significant bit to record whether we have | |
2438 | already generated the necessary reloc. */ | |
2439 | if ((off & 1) != 0) | |
2440 | off &= ~1; | |
2441 | else | |
2442 | { | |
2443 | bfd_put_32 (output_bfd, relocation, | |
f41345a7 | 2444 | htab->elf.sgot->contents + off); |
a85d7ed0 | 2445 | |
0e1862bb | 2446 | if (bfd_link_pic (info)) |
26e41594 AM |
2447 | { |
2448 | asection *srelgot; | |
2449 | Elf_Internal_Rela outrel; | |
947216bf | 2450 | bfd_byte *loc; |
a85d7ed0 | 2451 | |
f41345a7 | 2452 | srelgot = htab->elf.srelgot; |
0451c93c MS |
2453 | if (srelgot == NULL) |
2454 | abort (); | |
a85d7ed0 | 2455 | |
f41345a7 AK |
2456 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2457 | + htab->elf.sgot->output_offset | |
26e41594 AM |
2458 | + off); |
2459 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
a85d7ed0 | 2460 | outrel.r_addend = relocation; |
947216bf AM |
2461 | loc = srelgot->contents; |
2462 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
26e41594 AM |
2463 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
2464 | } | |
a85d7ed0 | 2465 | |
26e41594 AM |
2466 | local_got_offsets[r_symndx] |= 1; |
2467 | } | |
2468 | } | |
a85d7ed0 | 2469 | |
0451c93c MS |
2470 | if (off >= (bfd_vma) -2) |
2471 | abort (); | |
a85d7ed0 | 2472 | |
470b557a | 2473 | relocation = base_got->output_offset + off; |
befc3abb | 2474 | |
ae9a127f NC |
2475 | /* For @GOTENT the relocation is against the offset between |
2476 | the instruction and the symbols entry in the GOT and not | |
2477 | between the start of the GOT and the symbols entry. We | |
2478 | add the vma of the GOT to get the correct value. */ | |
5236c819 MS |
2479 | if ( r_type == R_390_GOTENT |
2480 | || r_type == R_390_GOTPLTENT) | |
470b557a | 2481 | relocation += base_got->output_section->vma; |
befc3abb | 2482 | |
26e41594 | 2483 | break; |
dc810e39 | 2484 | |
5236c819 | 2485 | case R_390_GOTOFF16: |
26e41594 AM |
2486 | case R_390_GOTOFF32: |
2487 | /* Relocation is relative to the start of the global offset | |
2488 | table. */ | |
2489 | ||
01a53584 AK |
2490 | if (h != NULL |
2491 | && s390_is_ifunc_symbol_p (h) | |
2492 | && h->def_regular | |
2493 | && !bfd_link_executable (info)) | |
2494 | { | |
2495 | relocation = (htab->elf.iplt->output_section->vma | |
2496 | + htab->elf.iplt->output_offset | |
2497 | + h->plt.offset | |
2498 | - htab->elf.sgot->output_section->vma); | |
2499 | goto do_relocation; | |
2500 | } | |
2501 | ||
26e41594 AM |
2502 | /* Note that sgot->output_offset is not involved in this |
2503 | calculation. We always want the start of .got. If we | |
2504 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
2505 | permitted by the ABI, we might have to change this | |
2506 | calculation. */ | |
f41345a7 | 2507 | relocation -= htab->elf.sgot->output_section->vma; |
26e41594 AM |
2508 | break; |
2509 | ||
2510 | case R_390_GOTPC: | |
befc3abb | 2511 | case R_390_GOTPCDBL: |
26e41594 | 2512 | /* Use global offset table as symbol value. */ |
f41345a7 | 2513 | relocation = htab->elf.sgot->output_section->vma; |
b34976b6 | 2514 | unresolved_reloc = FALSE; |
26e41594 | 2515 | break; |
a85d7ed0 | 2516 | |
fb798c50 | 2517 | case R_390_PLT12DBL: |
26e41594 | 2518 | case R_390_PLT16DBL: |
fb798c50 | 2519 | case R_390_PLT24DBL: |
26e41594 AM |
2520 | case R_390_PLT32DBL: |
2521 | case R_390_PLT32: | |
2522 | /* Relocation is to the entry for this symbol in the | |
2523 | procedure linkage table. */ | |
a85d7ed0 | 2524 | |
26e41594 AM |
2525 | /* Resolve a PLT32 reloc against a local symbol directly, |
2526 | without using the procedure linkage table. */ | |
2527 | if (h == NULL) | |
2528 | break; | |
a85d7ed0 | 2529 | |
26e41594 | 2530 | if (h->plt.offset == (bfd_vma) -1 |
470b557a | 2531 | || (htab->elf.splt == NULL && htab->elf.iplt == NULL)) |
26e41594 AM |
2532 | { |
2533 | /* We didn't make a PLT entry for this symbol. This | |
2534 | happens when statically linking PIC code, or when | |
2535 | using -Bsymbolic. */ | |
2536 | break; | |
2537 | } | |
2538 | ||
470b557a AK |
2539 | if (s390_is_ifunc_symbol_p (h)) |
2540 | relocation = (htab->elf.iplt->output_section->vma | |
07d6d2b8 | 2541 | + htab->elf.iplt->output_offset |
470b557a AK |
2542 | + h->plt.offset); |
2543 | else | |
2544 | relocation = (htab->elf.splt->output_section->vma | |
2545 | + htab->elf.splt->output_offset | |
2546 | + h->plt.offset); | |
b34976b6 | 2547 | unresolved_reloc = FALSE; |
26e41594 | 2548 | break; |
a85d7ed0 | 2549 | |
5236c819 MS |
2550 | case R_390_PLTOFF16: |
2551 | case R_390_PLTOFF32: | |
26e41594 AM |
2552 | /* Relocation is to the entry for this symbol in the |
2553 | procedure linkage table relative to the start of the GOT. */ | |
5236c819 MS |
2554 | |
2555 | /* For local symbols or if we didn't make a PLT entry for | |
2556 | this symbol resolve the symbol directly. */ | |
31db78f6 | 2557 | if (h == NULL |
5236c819 | 2558 | || h->plt.offset == (bfd_vma) -1 |
31db78f6 | 2559 | || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h))) |
5236c819 | 2560 | { |
f41345a7 | 2561 | relocation -= htab->elf.sgot->output_section->vma; |
5236c819 MS |
2562 | break; |
2563 | } | |
2564 | ||
470b557a AK |
2565 | if (s390_is_ifunc_symbol_p (h)) |
2566 | relocation = (htab->elf.iplt->output_section->vma | |
2567 | + htab->elf.iplt->output_offset | |
2568 | + h->plt.offset | |
2569 | - htab->elf.sgot->output_section->vma); | |
2570 | else | |
2571 | relocation = (htab->elf.splt->output_section->vma | |
2572 | + htab->elf.splt->output_offset | |
2573 | + h->plt.offset | |
2574 | - htab->elf.sgot->output_section->vma); | |
5236c819 | 2575 | unresolved_reloc = FALSE; |
26e41594 AM |
2576 | break; |
2577 | ||
26e41594 | 2578 | case R_390_PC16: |
fb798c50 | 2579 | case R_390_PC12DBL: |
26e41594 | 2580 | case R_390_PC16DBL: |
fb798c50 | 2581 | case R_390_PC24DBL: |
26e41594 AM |
2582 | case R_390_PC32DBL: |
2583 | case R_390_PC32: | |
99ba5125 AK |
2584 | if (h != NULL |
2585 | && s390_is_ifunc_symbol_p (h) | |
2586 | && h->def_regular | |
2587 | && !bfd_link_executable (info)) | |
2588 | { | |
2589 | /* This will not work our if the function does not | |
2590 | happen to set up the GOT pointer for some other | |
2591 | reason. 31 bit PLT entries require r12 to hold the | |
2592 | GOT pointer. | |
2593 | FIXME: Implement an errorcheck. | |
2594 | NOTE: It will work when brasl is not available | |
2595 | (e.g. with -m31 -march=g5) since a local function | |
2596 | call then does use GOTOFF which implies r12 being set | |
2597 | up. */ | |
2598 | relocation = (htab->elf.iplt->output_section->vma | |
2599 | + htab->elf.iplt->output_offset | |
2600 | + h ->plt.offset); | |
2601 | goto do_relocation; | |
2602 | } | |
1a0670f3 | 2603 | /* Fall through. */ |
99ba5125 AK |
2604 | |
2605 | case R_390_8: | |
2606 | case R_390_16: | |
2607 | case R_390_32: | |
f657f8c4 NC |
2608 | if ((input_section->flags & SEC_ALLOC) == 0) |
2609 | break; | |
2610 | ||
470b557a AK |
2611 | if (h != NULL |
2612 | && s390_is_ifunc_symbol_p (h) | |
2613 | && h->def_regular) | |
2614 | { | |
d7ab4911 | 2615 | if (!bfd_link_pic (info)) |
470b557a AK |
2616 | { |
2617 | /* For a non-shared object STT_GNU_IFUNC symbol must | |
2618 | go through PLT. */ | |
2619 | relocation = (htab->elf.iplt->output_section->vma | |
2620 | + htab->elf.iplt->output_offset | |
2621 | + h ->plt.offset); | |
2622 | goto do_relocation; | |
2623 | } | |
2624 | else | |
2625 | { | |
2626 | /* For shared objects a runtime relocation is needed. */ | |
2627 | ||
2628 | Elf_Internal_Rela outrel; | |
2629 | asection *sreloc; | |
2630 | ||
2631 | /* Need a dynamic relocation to get the real function | |
2632 | address. */ | |
2633 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
2634 | info, | |
2635 | input_section, | |
2636 | rel->r_offset); | |
2637 | if (outrel.r_offset == (bfd_vma) -1 | |
2638 | || outrel.r_offset == (bfd_vma) -2) | |
2639 | abort (); | |
2640 | ||
2641 | outrel.r_offset += (input_section->output_section->vma | |
2642 | + input_section->output_offset); | |
2643 | ||
2644 | if (h->dynindx == -1 | |
2645 | || h->forced_local | |
0e1862bb | 2646 | || bfd_link_executable (info)) |
470b557a AK |
2647 | { |
2648 | /* This symbol is resolved locally. */ | |
2649 | outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE); | |
2650 | outrel.r_addend = (h->root.u.def.value | |
2651 | + h->root.u.def.section->output_section->vma | |
2652 | + h->root.u.def.section->output_offset); | |
2653 | } | |
2654 | else | |
2655 | { | |
2656 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
2657 | outrel.r_addend = 0; | |
2658 | } | |
2659 | ||
2660 | sreloc = htab->elf.irelifunc; | |
2661 | elf_append_rela (output_bfd, sreloc, &outrel); | |
2662 | ||
2663 | /* If this reloc is against an external symbol, we | |
2664 | do not want to fiddle with the addend. Otherwise, | |
2665 | we need to include the symbol value so that it | |
2666 | becomes an addend for the dynamic reloc. For an | |
2667 | internal symbol, we have updated addend. */ | |
2668 | continue; | |
2669 | } | |
2670 | } | |
2671 | ||
0e1862bb | 2672 | if ((bfd_link_pic (info) |
82058a73 | 2673 | && (h == NULL |
b27bb18f L |
2674 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2675 | && !resolved_to_zero) | |
82058a73 | 2676 | || h->root.type != bfd_link_hash_undefweak) |
0451c93c | 2677 | && ((r_type != R_390_PC16 |
fb798c50 | 2678 | && r_type != R_390_PC12DBL |
0451c93c | 2679 | && r_type != R_390_PC16DBL |
fb798c50 | 2680 | && r_type != R_390_PC24DBL |
befc3abb | 2681 | && r_type != R_390_PC32DBL |
0451c93c | 2682 | && r_type != R_390_PC32) |
8c21ca21 | 2683 | || !SYMBOL_CALLS_LOCAL (info, h))) |
64285810 | 2684 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 2685 | && !bfd_link_pic (info) |
0451c93c MS |
2686 | && h != NULL |
2687 | && h->dynindx != -1 | |
f5385ebf AM |
2688 | && !h->non_got_ref |
2689 | && ((h->def_dynamic | |
2690 | && !h->def_regular) | |
0451c93c MS |
2691 | || h->root.type == bfd_link_hash_undefweak |
2692 | || h->root.type == bfd_link_hash_undefined))) | |
26e41594 AM |
2693 | { |
2694 | Elf_Internal_Rela outrel; | |
2695 | bfd_boolean skip, relocate; | |
0451c93c | 2696 | asection *sreloc; |
947216bf | 2697 | bfd_byte *loc; |
ec338859 | 2698 | |
0451c93c MS |
2699 | /* When generating a shared object, these relocations |
2700 | are copied into the output file to be resolved at run | |
2701 | time. */ | |
ec338859 | 2702 | |
26e41594 AM |
2703 | skip = FALSE; |
2704 | relocate = FALSE; | |
ec338859 | 2705 | |
c629eae0 JJ |
2706 | outrel.r_offset = |
2707 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2708 | rel->r_offset); | |
2709 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2710 | skip = TRUE; |
0bb2d96a | 2711 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2712 | skip = TRUE, relocate = TRUE; |
26e41594 AM |
2713 | outrel.r_offset += (input_section->output_section->vma |
2714 | + input_section->output_offset); | |
ec338859 | 2715 | |
26e41594 | 2716 | if (skip) |
0bb2d96a | 2717 | memset (&outrel, 0, sizeof outrel); |
26e41594 | 2718 | else if (h != NULL |
0451c93c MS |
2719 | && h->dynindx != -1 |
2720 | && (r_type == R_390_PC16 | |
fb798c50 | 2721 | || r_type == R_390_PC12DBL |
0451c93c | 2722 | || r_type == R_390_PC16DBL |
fb798c50 | 2723 | || r_type == R_390_PC24DBL |
befc3abb | 2724 | || r_type == R_390_PC32DBL |
0451c93c | 2725 | || r_type == R_390_PC32 |
0e1862bb | 2726 | || !bfd_link_pic (info) |
8c21ca21 | 2727 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 2728 | || !h->def_regular)) |
26e41594 AM |
2729 | { |
2730 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
27018c3f | 2731 | outrel.r_addend = rel->r_addend; |
26e41594 AM |
2732 | } |
2733 | else | |
2734 | { | |
0451c93c | 2735 | /* This symbol is local, or marked to become local. */ |
90ced0dd | 2736 | outrel.r_addend = relocation + rel->r_addend; |
b5727d75 MS |
2737 | if (r_type == R_390_32) |
2738 | { | |
2739 | relocate = TRUE; | |
2740 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
b5727d75 MS |
2741 | } |
2742 | else | |
2743 | { | |
2744 | long sindx; | |
2745 | ||
90ced0dd | 2746 | if (bfd_is_abs_section (sec)) |
b5727d75 MS |
2747 | sindx = 0; |
2748 | else if (sec == NULL || sec->owner == NULL) | |
2749 | { | |
2750 | bfd_set_error(bfd_error_bad_value); | |
2751 | return FALSE; | |
2752 | } | |
2753 | else | |
2754 | { | |
2755 | asection *osec; | |
2756 | ||
2757 | osec = sec->output_section; | |
2758 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
2759 | if (sindx == 0) |
2760 | { | |
2761 | osec = htab->elf.text_index_section; | |
2762 | sindx = elf_section_data (osec)->dynindx; | |
2763 | } | |
2764 | BFD_ASSERT (sindx != 0); | |
90ced0dd MS |
2765 | |
2766 | /* We are turning this relocation into one | |
2767 | against a section symbol, so subtract out | |
2768 | the output section's address but not the | |
2769 | offset of the input section in the output | |
2770 | section. */ | |
90ced0dd | 2771 | outrel.r_addend -= osec->vma; |
b5727d75 MS |
2772 | } |
2773 | outrel.r_info = ELF32_R_INFO (sindx, r_type); | |
b5727d75 | 2774 | } |
26e41594 | 2775 | } |
ec338859 | 2776 | |
0451c93c MS |
2777 | sreloc = elf_section_data (input_section)->sreloc; |
2778 | if (sreloc == NULL) | |
2779 | abort (); | |
ec338859 | 2780 | |
947216bf AM |
2781 | loc = sreloc->contents; |
2782 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 2783 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
ec338859 | 2784 | |
26e41594 AM |
2785 | /* If this reloc is against an external symbol, we do |
2786 | not want to fiddle with the addend. Otherwise, we | |
2787 | need to include the symbol value so that it becomes | |
2788 | an addend for the dynamic reloc. */ | |
2789 | if (! relocate) | |
2790 | continue; | |
2791 | } | |
0451c93c | 2792 | break; |
ec338859 | 2793 | |
69fc87f1 MS |
2794 | /* Relocations for tls literal pool entries. */ |
2795 | case R_390_TLS_IE32: | |
0e1862bb | 2796 | if (bfd_link_pic (info)) |
69fc87f1 MS |
2797 | { |
2798 | Elf_Internal_Rela outrel; | |
2799 | asection *sreloc; | |
2800 | bfd_byte *loc; | |
2801 | ||
2802 | outrel.r_offset = rel->r_offset | |
2803 | + input_section->output_section->vma | |
2804 | + input_section->output_offset; | |
2805 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
2806 | sreloc = elf_section_data (input_section)->sreloc; | |
2807 | if (sreloc == NULL) | |
2808 | abort (); | |
2809 | loc = sreloc->contents; | |
2810 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
2811 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
2812 | } | |
ae9a127f | 2813 | /* Fall through. */ |
69fc87f1 MS |
2814 | |
2815 | case R_390_TLS_GD32: | |
2816 | case R_390_TLS_GOTIE32: | |
2817 | r_type = elf_s390_tls_transition (info, r_type, h == NULL); | |
2818 | tls_type = GOT_UNKNOWN; | |
2819 | if (h == NULL && local_got_offsets) | |
2820 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
2821 | else if (h != NULL) | |
2822 | { | |
2823 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
0e1862bb L |
2824 | if (!bfd_link_pic (info) |
2825 | && h->dynindx == -1 | |
2826 | && tls_type >= GOT_TLS_IE) | |
69fc87f1 MS |
2827 | r_type = R_390_TLS_LE32; |
2828 | } | |
2829 | if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE) | |
2830 | r_type = R_390_TLS_IE32; | |
2831 | ||
2832 | if (r_type == R_390_TLS_LE32) | |
2833 | { | |
2834 | /* This relocation gets optimized away by the local exec | |
2835 | access optimization. */ | |
2836 | BFD_ASSERT (! unresolved_reloc); | |
2837 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
2838 | contents + rel->r_offset); | |
2839 | continue; | |
2840 | } | |
2841 | ||
f41345a7 | 2842 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2843 | abort (); |
2844 | ||
2845 | if (h != NULL) | |
2846 | off = h->got.offset; | |
2847 | else | |
2848 | { | |
2849 | if (local_got_offsets == NULL) | |
2850 | abort (); | |
2851 | ||
2852 | off = local_got_offsets[r_symndx]; | |
2853 | } | |
2854 | ||
2855 | emit_tls_relocs: | |
2856 | ||
2857 | if ((off & 1) != 0) | |
2858 | off &= ~1; | |
26e41594 | 2859 | else |
69fc87f1 MS |
2860 | { |
2861 | Elf_Internal_Rela outrel; | |
2862 | bfd_byte *loc; | |
2863 | int dr_type, indx; | |
2864 | ||
f41345a7 | 2865 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2866 | abort (); |
2867 | ||
f41345a7 AK |
2868 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2869 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2870 | |
2871 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
2872 | if (r_type == R_390_TLS_GD32) | |
2873 | dr_type = R_390_TLS_DTPMOD; | |
2874 | else | |
2875 | dr_type = R_390_TLS_TPOFF; | |
2876 | if (dr_type == R_390_TLS_TPOFF && indx == 0) | |
2877 | outrel.r_addend = relocation - dtpoff_base (info); | |
2878 | else | |
2879 | outrel.r_addend = 0; | |
2880 | outrel.r_info = ELF32_R_INFO (indx, dr_type); | |
f41345a7 AK |
2881 | loc = htab->elf.srelgot->contents; |
2882 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
2883 | * sizeof (Elf32_External_Rela); |
2884 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
2885 | ||
2886 | if (r_type == R_390_TLS_GD32) | |
2887 | { | |
2888 | if (indx == 0) | |
2889 | { | |
26e41594 | 2890 | BFD_ASSERT (! unresolved_reloc); |
69fc87f1 MS |
2891 | bfd_put_32 (output_bfd, |
2892 | relocation - dtpoff_base (info), | |
f41345a7 | 2893 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2894 | } |
2895 | else | |
2896 | { | |
2897 | outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF); | |
2898 | outrel.r_offset += GOT_ENTRY_SIZE; | |
2899 | outrel.r_addend = 0; | |
f41345a7 | 2900 | htab->elf.srelgot->reloc_count++; |
69fc87f1 MS |
2901 | loc += sizeof (Elf32_External_Rela); |
2902 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
2903 | } | |
2904 | } | |
2905 | ||
2906 | if (h != NULL) | |
2907 | h->got.offset |= 1; | |
2908 | else | |
2909 | local_got_offsets[r_symndx] |= 1; | |
2910 | } | |
2911 | ||
2912 | if (off >= (bfd_vma) -2) | |
2913 | abort (); | |
2914 | if (r_type == ELF32_R_TYPE (rel->r_info)) | |
2915 | { | |
f41345a7 | 2916 | relocation = htab->elf.sgot->output_offset + off; |
69fc87f1 | 2917 | if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT) |
f41345a7 | 2918 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
2919 | unresolved_reloc = FALSE; |
2920 | } | |
2921 | else | |
2922 | { | |
f41345a7 | 2923 | bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off, |
69fc87f1 MS |
2924 | contents + rel->r_offset); |
2925 | continue; | |
2926 | } | |
2927 | break; | |
2928 | ||
2929 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 2930 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
2931 | case R_390_TLS_IEENT: |
2932 | if (h == NULL) | |
2933 | { | |
2934 | if (local_got_offsets == NULL) | |
2935 | abort(); | |
2936 | off = local_got_offsets[r_symndx]; | |
0e1862bb | 2937 | if (bfd_link_pic (info)) |
69fc87f1 MS |
2938 | goto emit_tls_relocs; |
2939 | } | |
2940 | else | |
2941 | { | |
2942 | off = h->got.offset; | |
2943 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
0e1862bb L |
2944 | if (bfd_link_pic (info) |
2945 | || h->dynindx != -1 | |
2946 | || tls_type < GOT_TLS_IE) | |
69fc87f1 MS |
2947 | goto emit_tls_relocs; |
2948 | } | |
2949 | ||
f41345a7 | 2950 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2951 | abort (); |
2952 | ||
2953 | BFD_ASSERT (! unresolved_reloc); | |
2954 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
f41345a7 AK |
2955 | htab->elf.sgot->contents + off); |
2956 | relocation = htab->elf.sgot->output_offset + off; | |
69fc87f1 | 2957 | if (r_type == R_390_TLS_IEENT) |
f41345a7 | 2958 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
2959 | unresolved_reloc = FALSE; |
2960 | break; | |
2961 | ||
2962 | case R_390_TLS_LDM32: | |
0e1862bb | 2963 | if (! bfd_link_pic (info)) |
69fc87f1 MS |
2964 | /* The literal pool entry this relocation refers to gets ignored |
2965 | by the optimized code of the local exec model. Do nothing | |
2966 | and the value will turn out zero. */ | |
2967 | continue; | |
2968 | ||
f41345a7 | 2969 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2970 | abort (); |
2971 | ||
2972 | off = htab->tls_ldm_got.offset; | |
2973 | if (off & 1) | |
2974 | off &= ~1; | |
2975 | else | |
2976 | { | |
2977 | Elf_Internal_Rela outrel; | |
2978 | bfd_byte *loc; | |
2979 | ||
f41345a7 | 2980 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2981 | abort (); |
2982 | ||
f41345a7 AK |
2983 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2984 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2985 | |
2986 | bfd_put_32 (output_bfd, 0, | |
f41345a7 | 2987 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2988 | outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD); |
2989 | outrel.r_addend = 0; | |
f41345a7 AK |
2990 | loc = htab->elf.srelgot->contents; |
2991 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
2992 | * sizeof (Elf32_External_Rela); |
2993 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
2994 | htab->tls_ldm_got.offset |= 1; | |
2995 | } | |
f41345a7 | 2996 | relocation = htab->elf.sgot->output_offset + off; |
26e41594 | 2997 | unresolved_reloc = FALSE; |
69fc87f1 MS |
2998 | break; |
2999 | ||
3000 | case R_390_TLS_LE32: | |
3cbc1e5e | 3001 | if (bfd_link_dll (info)) |
69fc87f1 MS |
3002 | { |
3003 | /* Linking a shared library with non-fpic code requires | |
3004 | a R_390_TLS_TPOFF relocation. */ | |
3005 | Elf_Internal_Rela outrel; | |
3006 | asection *sreloc; | |
3007 | bfd_byte *loc; | |
3008 | int indx; | |
3009 | ||
3010 | outrel.r_offset = rel->r_offset | |
3011 | + input_section->output_section->vma | |
3012 | + input_section->output_offset; | |
3013 | if (h != NULL && h->dynindx != -1) | |
3014 | indx = h->dynindx; | |
3015 | else | |
3016 | indx = 0; | |
3017 | outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF); | |
3018 | if (indx == 0) | |
3019 | outrel.r_addend = relocation - dtpoff_base (info); | |
3020 | else | |
3021 | outrel.r_addend = 0; | |
3022 | sreloc = elf_section_data (input_section)->sreloc; | |
3023 | if (sreloc == NULL) | |
3024 | abort (); | |
3025 | loc = sreloc->contents; | |
3026 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
3027 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
3028 | } | |
3029 | else | |
3030 | { | |
3031 | BFD_ASSERT (! unresolved_reloc); | |
3032 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
3033 | contents + rel->r_offset); | |
3034 | } | |
3035 | continue; | |
3036 | ||
3037 | case R_390_TLS_LDO32: | |
0e1862bb | 3038 | if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING)) |
69fc87f1 MS |
3039 | relocation -= dtpoff_base (info); |
3040 | else | |
3041 | /* When converting LDO to LE, we must negate. */ | |
3042 | relocation = -tpoff (info, relocation); | |
3043 | break; | |
3044 | ||
3045 | /* Relocations for tls instructions. */ | |
3046 | case R_390_TLS_LOAD: | |
3047 | case R_390_TLS_GDCALL: | |
3048 | case R_390_TLS_LDCALL: | |
3049 | tls_type = GOT_UNKNOWN; | |
3050 | if (h == NULL && local_got_offsets) | |
3051 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
3052 | else if (h != NULL) | |
3053 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
3054 | ||
3055 | if (tls_type == GOT_TLS_GD) | |
3056 | continue; | |
3057 | ||
3058 | if (r_type == R_390_TLS_LOAD) | |
3059 | { | |
0e1862bb | 3060 | if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) |
69fc87f1 MS |
3061 | { |
3062 | /* IE->LE transition. Four valid cases: | |
3063 | l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 | |
3064 | l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 | |
3065 | l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 | |
3066 | l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
3067 | unsigned int insn, ry; | |
3068 | ||
3069 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
69fc87f1 MS |
3070 | if ((insn & 0xff00f000) == 0x58000000) |
3071 | /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */ | |
3072 | ry = (insn & 0x000f0000); | |
3073 | else if ((insn & 0xff0f0000) == 0x58000000) | |
3074 | /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
3075 | ry = (insn & 0x0000f000) << 4; | |
3076 | else if ((insn & 0xff00f000) == 0x5800c000) | |
3077 | /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */ | |
3078 | ry = (insn & 0x000f0000); | |
3079 | else if ((insn & 0xff0f0000) == 0x580c0000) | |
3080 | /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
3081 | ry = (insn & 0x0000f000) << 4; | |
3082 | else | |
3704e358 AK |
3083 | { |
3084 | invalid_tls_insn (input_bfd, input_section, rel); | |
3085 | return FALSE; | |
3086 | } | |
69fc87f1 MS |
3087 | insn = 0x18000700 | (insn & 0x00f00000) | ry; |
3088 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
3089 | } | |
3090 | } | |
3091 | else if (r_type == R_390_TLS_GDCALL) | |
3092 | { | |
3093 | unsigned int insn; | |
3094 | ||
3095 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
77df2968 | 3096 | if ((insn & 0xff000fff) != 0x4d000000 && |
d0ddfe27 AK |
3097 | (insn & 0xffff0000) != 0xc0e50000 && |
3098 | (insn & 0xff000000) != 0x0d000000) | |
3704e358 AK |
3099 | { |
3100 | invalid_tls_insn (input_bfd, input_section, rel); | |
3101 | return FALSE; | |
3102 | } | |
0e1862bb | 3103 | if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) |
77df2968 | 3104 | { |
d0ddfe27 AK |
3105 | if ((insn & 0xff000000) == 0x0d000000) |
3106 | { | |
3107 | /* GD->LE transition. | |
3108 | basr rx, ry -> nopr r7 */ | |
3109 | insn = 0x07070000 | (insn & 0xffff); | |
3110 | } | |
3111 | else if ((insn & 0xff000000) == 0x4d000000) | |
77df2968 MS |
3112 | { |
3113 | /* GD->LE transition. | |
3114 | bas %r14,0(%rx,%r13) -> bc 0,0 */ | |
3115 | insn = 0x47000000; | |
3116 | } | |
3117 | else | |
3118 | { | |
3119 | /* GD->LE transition. | |
d0ddfe27 | 3120 | brasl %r14,_tls_get_offset@plt -> brcl 0,. */ |
77df2968 MS |
3121 | insn = 0xc0040000; |
3122 | bfd_put_16 (output_bfd, 0x0000, | |
3123 | contents + rel->r_offset + 4); | |
3124 | } | |
3125 | } | |
69fc87f1 | 3126 | else |
77df2968 | 3127 | { |
d0ddfe27 AK |
3128 | /* If basr is used in the pic case to invoke |
3129 | _tls_get_offset, something went wrong before. */ | |
3130 | if ((insn & 0xff000000) == 0x0d000000) | |
3704e358 AK |
3131 | { |
3132 | invalid_tls_insn (input_bfd, input_section, rel); | |
3133 | return FALSE; | |
3134 | } | |
d0ddfe27 | 3135 | |
77df2968 MS |
3136 | if ((insn & 0xff000000) == 0x4d000000) |
3137 | { | |
3138 | /* GD->IE transition. | |
3139 | bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */ | |
3140 | insn = 0x5822c000; | |
3141 | } | |
3142 | else | |
3143 | { | |
3144 | /* GD->IE transition. | |
3145 | brasl %r14,__tls_get_addr@plt -> | |
07d6d2b8 | 3146 | l %r2,0(%r2,%r12) ; bcr 0,0 */ |
77df2968 MS |
3147 | insn = 0x5822c000; |
3148 | bfd_put_16 (output_bfd, 0x0700, | |
3149 | contents + rel->r_offset + 4); | |
3150 | } | |
3151 | } | |
69fc87f1 MS |
3152 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
3153 | } | |
3154 | else if (r_type == R_390_TLS_LDCALL) | |
3155 | { | |
0e1862bb | 3156 | if (!bfd_link_pic (info)) |
69fc87f1 MS |
3157 | { |
3158 | unsigned int insn; | |
3159 | ||
3160 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
77df2968 | 3161 | if ((insn & 0xff000fff) != 0x4d000000 && |
d0ddfe27 AK |
3162 | (insn & 0xffff0000) != 0xc0e50000 && |
3163 | (insn & 0xff000000) != 0x0d000000) | |
3704e358 AK |
3164 | { |
3165 | invalid_tls_insn (input_bfd, input_section, rel); | |
3166 | return FALSE; | |
3167 | } | |
d0ddfe27 AK |
3168 | |
3169 | if ((insn & 0xff000000) == 0x0d000000) | |
3170 | { | |
3171 | /* LD->LE transition. | |
3172 | basr rx, ry -> nopr r7 */ | |
3173 | insn = 0x07070000 | (insn & 0xffff); | |
3174 | } | |
3175 | else if ((insn & 0xff000000) == 0x4d000000) | |
77df2968 MS |
3176 | { |
3177 | /* LD->LE transition. | |
3178 | bas %r14,0(%rx,%r13) -> bc 0,0 */ | |
3179 | insn = 0x47000000; | |
3180 | } | |
3181 | else | |
3182 | { | |
3183 | /* LD->LE transition. | |
d0ddfe27 | 3184 | brasl %r14,__tls_get_offset@plt -> brcl 0,. */ |
77df2968 MS |
3185 | insn = 0xc0040000; |
3186 | bfd_put_16 (output_bfd, 0x0000, | |
3187 | contents + rel->r_offset + 4); | |
3188 | } | |
69fc87f1 MS |
3189 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
3190 | } | |
3191 | } | |
3192 | continue; | |
3193 | ||
0451c93c MS |
3194 | default: |
3195 | break; | |
3196 | } | |
ec338859 | 3197 | |
239e1f3a AM |
3198 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3199 | because such sections are not SEC_ALLOC and thus ld.so will | |
3200 | not process them. */ | |
0451c93c | 3201 | if (unresolved_reloc |
239e1f3a | 3202 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
3203 | && h->def_dynamic) |
3204 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
3205 | rel->r_offset) != (bfd_vma) -1) | |
4eca0228 | 3206 | _bfd_error_handler |
695344c0 | 3207 | /* xgettext:c-format */ |
2dcf00ce AM |
3208 | (_("%pB(%pA+%#" PRIx64 "): " |
3209 | "unresolvable %s relocation against symbol `%s'"), | |
d003868e AM |
3210 | input_bfd, |
3211 | input_section, | |
2dcf00ce | 3212 | (uint64_t) rel->r_offset, |
843fe662 | 3213 | howto->name, |
0451c93c | 3214 | h->root.root.string); |
ec338859 | 3215 | |
470b557a AK |
3216 | do_relocation: |
3217 | ||
fb798c50 AK |
3218 | /* When applying a 24 bit reloc we need to start one byte |
3219 | earlier. Otherwise the 32 bit get/put bfd operations might | |
3220 | access a byte after the actual section. */ | |
3221 | if (r_type == R_390_PC24DBL | |
3222 | || r_type == R_390_PLT24DBL) | |
3223 | rel->r_offset--; | |
3224 | ||
bd1ea41b MS |
3225 | if (r_type == R_390_20 |
3226 | || r_type == R_390_GOT20 | |
3227 | || r_type == R_390_GOTPLT20 | |
3228 | || r_type == R_390_TLS_GOTIE20) | |
3229 | { | |
3230 | relocation += rel->r_addend; | |
3231 | relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12; | |
3232 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3233 | contents, rel->r_offset, | |
3234 | relocation, 0); | |
3235 | } | |
3236 | else | |
3237 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3238 | contents, rel->r_offset, | |
3239 | relocation, rel->r_addend); | |
ec338859 | 3240 | |
a85d7ed0 NC |
3241 | if (r != bfd_reloc_ok) |
3242 | { | |
0451c93c | 3243 | const char *name; |
ec338859 | 3244 | |
0451c93c MS |
3245 | if (h != NULL) |
3246 | name = h->root.root.string; | |
3247 | else | |
a85d7ed0 | 3248 | { |
0451c93c MS |
3249 | name = bfd_elf_string_from_elf_section (input_bfd, |
3250 | symtab_hdr->sh_link, | |
3251 | sym->st_name); | |
3252 | if (name == NULL) | |
b34976b6 | 3253 | return FALSE; |
0451c93c MS |
3254 | if (*name == '\0') |
3255 | name = bfd_section_name (input_bfd, sec); | |
3256 | } | |
ec338859 | 3257 | |
0451c93c | 3258 | if (r == bfd_reloc_overflow) |
1a72702b AM |
3259 | (*info->callbacks->reloc_overflow) |
3260 | (info, (h ? &h->root : NULL), name, howto->name, | |
3261 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
0451c93c MS |
3262 | else |
3263 | { | |
4eca0228 | 3264 | _bfd_error_handler |
695344c0 | 3265 | /* xgettext:c-format */ |
2dcf00ce | 3266 | (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"), |
d003868e | 3267 | input_bfd, input_section, |
2dcf00ce | 3268 | (uint64_t) rel->r_offset, name, (int) r); |
b34976b6 | 3269 | return FALSE; |
a85d7ed0 NC |
3270 | } |
3271 | } | |
3272 | } | |
ec338859 | 3273 | |
b34976b6 | 3274 | return TRUE; |
a85d7ed0 NC |
3275 | } |
3276 | ||
470b557a AK |
3277 | /* Generate the PLT slots together with the dynamic relocations needed |
3278 | for IFUNC symbols. */ | |
3279 | ||
3280 | static void | |
3281 | elf_s390_finish_ifunc_symbol (bfd *output_bfd, | |
3282 | struct bfd_link_info *info, | |
3283 | struct elf_link_hash_entry *h, | |
3284 | struct elf_s390_link_hash_table *htab, | |
3285 | bfd_vma iplt_offset, | |
3286 | bfd_vma resolver_address) | |
3287 | { | |
3288 | bfd_vma iplt_index; | |
3289 | bfd_vma got_offset; | |
3290 | bfd_vma igotiplt_offset; | |
3291 | Elf_Internal_Rela rela; | |
3292 | bfd_byte *loc; | |
3293 | asection *plt, *gotplt, *relplt; | |
3294 | bfd_vma relative_offset; | |
3295 | ||
3296 | if (htab->elf.iplt == NULL | |
3297 | || htab->elf.igotplt == NULL | |
3298 | || htab->elf.irelplt == NULL) | |
3299 | abort (); | |
3300 | ||
3301 | gotplt = htab->elf.igotplt; | |
3302 | relplt = htab->elf.irelplt; | |
3303 | ||
3304 | /* Index of the PLT slot within iplt section. */ | |
3305 | iplt_index = iplt_offset / PLT_ENTRY_SIZE; | |
3306 | plt = htab->elf.iplt; | |
3307 | /* Offset into the igot.plt section. */ | |
3308 | igotiplt_offset = iplt_index * GOT_ENTRY_SIZE; | |
3309 | /* Offset into the got section. */ | |
3310 | got_offset = igotiplt_offset + gotplt->output_offset; | |
3311 | ||
3312 | /* S390 uses halfwords for relative branch calc! */ | |
3313 | relative_offset = - (plt->output_offset + | |
3314 | (PLT_ENTRY_SIZE * iplt_index) + 18) / 2; | |
ceada896 AA |
3315 | /* If offset is > 32768, branch to a previous branch |
3316 | 390 can only handle +-64 K jumps. */ | |
470b557a AK |
3317 | if ( -32768 > (int) relative_offset ) |
3318 | relative_offset | |
3319 | = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2); | |
3320 | ||
3321 | /* Fill in the entry in the procedure linkage table. */ | |
0e1862bb | 3322 | if (!bfd_link_pic (info)) |
470b557a AK |
3323 | { |
3324 | memcpy (plt->contents + iplt_offset, elf_s390_plt_entry, | |
3325 | PLT_ENTRY_SIZE); | |
3326 | ||
3327 | /* Adjust jump to the first plt entry. */ | |
3328 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3329 | plt->contents + iplt_offset + 20); | |
3330 | ||
3331 | /* Push the GOT offset field. */ | |
3332 | bfd_put_32 (output_bfd, | |
3333 | (gotplt->output_section->vma | |
3334 | + got_offset), | |
3335 | plt->contents + iplt_offset + 24); | |
3336 | } | |
3337 | else if (got_offset < 4096) | |
3338 | { | |
3339 | /* The GOT offset is small enough to be used directly as | |
3340 | displacement. */ | |
3341 | memcpy (plt->contents + iplt_offset, | |
3342 | elf_s390_plt_pic12_entry, | |
3343 | PLT_ENTRY_SIZE); | |
3344 | ||
3345 | /* Put in the GOT offset as displacement value. The 0xc000 | |
3346 | value comes from the first word of the plt entry. Look | |
3347 | at the elf_s390_plt_pic16_entry content. */ | |
3348 | bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset, | |
3349 | plt->contents + iplt_offset + 2); | |
3350 | ||
3351 | /* Adjust the jump to the first plt entry. */ | |
3352 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3353 | plt->contents + iplt_offset + 20); | |
3354 | } | |
3355 | else if (got_offset < 32768) | |
3356 | { | |
3357 | /* The GOT offset is too big for a displacement but small | |
3358 | enough to be a signed 16 bit immediate value as it can be | |
3359 | used in an lhi instruction. */ | |
3360 | memcpy (plt->contents + iplt_offset, | |
3361 | elf_s390_plt_pic16_entry, | |
3362 | PLT_ENTRY_SIZE); | |
3363 | ||
3364 | /* Put in the GOT offset for the lhi instruction. */ | |
3365 | bfd_put_16 (output_bfd, (bfd_vma)got_offset, | |
3366 | plt->contents + iplt_offset + 2); | |
3367 | ||
3368 | /* Adjust the jump to the first plt entry. */ | |
3369 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3370 | plt->contents + iplt_offset + 20); | |
3371 | } | |
3372 | else | |
3373 | { | |
3374 | memcpy (plt->contents + iplt_offset, | |
3375 | elf_s390_plt_pic_entry, | |
3376 | PLT_ENTRY_SIZE); | |
3377 | ||
3378 | /* Adjust the jump to the first plt entry. */ | |
3379 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3380 | plt->contents + iplt_offset + 20); | |
3381 | ||
3382 | /* Push the GOT offset field. */ | |
3383 | bfd_put_32 (output_bfd, got_offset, | |
3384 | plt->contents + iplt_offset + 24); | |
3385 | } | |
3386 | /* Insert offset into reloc. table here. */ | |
3387 | bfd_put_32 (output_bfd, relplt->output_offset + | |
3388 | iplt_index * RELA_ENTRY_SIZE, | |
3389 | plt->contents + iplt_offset + 28); | |
3390 | ||
3391 | /* Fill in the entry in the global offset table. | |
3392 | Points to instruction after GOT offset. */ | |
3393 | bfd_put_32 (output_bfd, | |
3394 | (plt->output_section->vma | |
3395 | + plt->output_offset | |
3396 | + iplt_offset | |
3397 | + 12), | |
3398 | gotplt->contents + igotiplt_offset); | |
3399 | ||
3400 | /* Fill in the entry in the .rela.plt section. */ | |
3401 | rela.r_offset = gotplt->output_section->vma + got_offset; | |
3402 | ||
3403 | if (!h | |
3404 | || h->dynindx == -1 | |
0e1862bb | 3405 | || ((bfd_link_executable (info) |
470b557a AK |
3406 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
3407 | && h->def_regular)) | |
3408 | { | |
3409 | /* The symbol can be locally resolved. */ | |
3410 | rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE); | |
3411 | rela.r_addend = resolver_address; | |
3412 | } | |
3413 | else | |
3414 | { | |
3415 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3416 | rela.r_addend = 0; | |
3417 | } | |
3418 | ||
3419 | loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE; | |
3420 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
3421 | } | |
3422 | ||
a85d7ed0 NC |
3423 | /* Finish up dynamic symbol handling. We set the contents of various |
3424 | dynamic sections here. */ | |
3425 | ||
b34976b6 | 3426 | static bfd_boolean |
2c3fc389 NC |
3427 | elf_s390_finish_dynamic_symbol (bfd *output_bfd, |
3428 | struct bfd_link_info *info, | |
3429 | struct elf_link_hash_entry *h, | |
3430 | Elf_Internal_Sym *sym) | |
a85d7ed0 | 3431 | { |
0451c93c | 3432 | struct elf_s390_link_hash_table *htab; |
470b557a | 3433 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h; |
ec338859 | 3434 | |
0451c93c | 3435 | htab = elf_s390_hash_table (info); |
ec338859 | 3436 | |
a85d7ed0 NC |
3437 | if (h->plt.offset != (bfd_vma) -1) |
3438 | { | |
0451c93c MS |
3439 | bfd_vma plt_index; |
3440 | bfd_vma got_offset; | |
a85d7ed0 | 3441 | Elf_Internal_Rela rela; |
947216bf | 3442 | bfd_byte *loc; |
a85d7ed0 | 3443 | bfd_vma relative_offset; |
ec338859 | 3444 | |
a85d7ed0 | 3445 | /* This symbol has an entry in the procedure linkage table. Set |
26e41594 | 3446 | it up. */ |
0a511368 | 3447 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) |
0451c93c | 3448 | { |
0a511368 AK |
3449 | elf_s390_finish_ifunc_symbol (output_bfd, info, h, |
3450 | htab, h->plt.offset, | |
3451 | eh->ifunc_resolver_address + | |
3452 | eh->ifunc_resolver_section->output_offset + | |
3453 | eh->ifunc_resolver_section->output_section->vma); | |
3454 | /* Do not return yet. Handling of explicit GOT slots of | |
3455 | IFUNC symbols is below. */ | |
0451c93c | 3456 | } |
a85d7ed0 | 3457 | else |
0451c93c | 3458 | { |
470b557a AK |
3459 | if (h->dynindx == -1 |
3460 | || htab->elf.splt == NULL | |
3461 | || htab->elf.sgotplt == NULL | |
3462 | || htab->elf.srelplt == NULL) | |
3463 | abort (); | |
9aa17453 | 3464 | |
470b557a AK |
3465 | /* Calc. index no. |
3466 | Current offset - size first entry / entry size. */ | |
3467 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
9aa17453 | 3468 | |
470b557a AK |
3469 | /* Offset in GOT is PLT index plus GOT headers(3) times 4, |
3470 | addr & GOT addr. */ | |
3471 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
a85d7ed0 | 3472 | |
470b557a AK |
3473 | /* S390 uses halfwords for relative branch calc! */ |
3474 | relative_offset = - ((PLT_FIRST_ENTRY_SIZE + | |
3475 | (PLT_ENTRY_SIZE * plt_index) + 18) / 2); | |
3476 | /* If offset is > 32768, branch to a previous branch | |
3477 | 390 can only handle +-64 K jumps. */ | |
3478 | if ( -32768 > (int) relative_offset ) | |
3479 | relative_offset | |
3480 | = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2); | |
ec338859 | 3481 | |
470b557a | 3482 | /* Fill in the entry in the procedure linkage table. */ |
0e1862bb | 3483 | if (!bfd_link_pic (info)) |
470b557a AK |
3484 | { |
3485 | memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry, | |
3486 | PLT_ENTRY_SIZE); | |
3487 | ||
3488 | /* Adjust jump to the first plt entry. */ | |
3489 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3490 | htab->elf.splt->contents + h->plt.offset + 20); | |
3491 | ||
3492 | /* Push the GOT offset field. */ | |
3493 | bfd_put_32 (output_bfd, | |
3494 | (htab->elf.sgotplt->output_section->vma | |
3495 | + htab->elf.sgotplt->output_offset | |
3496 | + got_offset), | |
3497 | htab->elf.splt->contents + h->plt.offset + 24); | |
3498 | } | |
3499 | else if (got_offset < 4096) | |
3500 | { | |
3501 | /* The GOT offset is small enough to be used directly as | |
3502 | displacement. */ | |
3503 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3504 | elf_s390_plt_pic12_entry, | |
3505 | PLT_ENTRY_SIZE); | |
3506 | ||
3507 | /* Put in the GOT offset as displacement value. The 0xc000 | |
3508 | value comes from the first word of the plt entry. Look | |
3b67f094 | 3509 | at the elf_s390_plt_pic12_entry content. */ |
470b557a AK |
3510 | bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset, |
3511 | htab->elf.splt->contents + h->plt.offset + 2); | |
3512 | ||
3513 | /* Adjust the jump to the first plt entry. */ | |
3514 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3515 | htab->elf.splt->contents + h->plt.offset + 20); | |
3516 | } | |
3517 | else if (got_offset < 32768) | |
3518 | { | |
3519 | /* The GOT offset is too big for a displacement but small | |
3520 | enough to be a signed 16 bit immediate value as it can be | |
3521 | used in an lhi instruction. */ | |
3522 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3523 | elf_s390_plt_pic16_entry, | |
3524 | PLT_ENTRY_SIZE); | |
3525 | ||
3526 | /* Put in the GOT offset for the lhi instruction. */ | |
3527 | bfd_put_16 (output_bfd, (bfd_vma)got_offset, | |
3528 | htab->elf.splt->contents + h->plt.offset + 2); | |
3529 | ||
3530 | /* Adjust the jump to the first plt entry. */ | |
3531 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3532 | htab->elf.splt->contents + h->plt.offset + 20); | |
3533 | } | |
3534 | else | |
3535 | { | |
3536 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3537 | elf_s390_plt_pic_entry, | |
3538 | PLT_ENTRY_SIZE); | |
3539 | ||
3540 | /* Adjust the jump to the first plt entry. */ | |
3541 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3542 | htab->elf.splt->contents + h->plt.offset + 20); | |
3543 | ||
3544 | /* Push the GOT offset field. */ | |
3545 | bfd_put_32 (output_bfd, got_offset, | |
3546 | htab->elf.splt->contents + h->plt.offset + 24); | |
3547 | } | |
3548 | /* Insert offset into reloc. table here. */ | |
3549 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
3550 | htab->elf.splt->contents + h->plt.offset + 28); | |
3551 | ||
3552 | /* Fill in the entry in the global offset table. | |
3553 | Points to instruction after GOT offset. */ | |
3554 | bfd_put_32 (output_bfd, | |
3555 | (htab->elf.splt->output_section->vma | |
3556 | + htab->elf.splt->output_offset | |
3557 | + h->plt.offset | |
3558 | + 12), | |
3559 | htab->elf.sgotplt->contents + got_offset); | |
3560 | ||
3561 | /* Fill in the entry in the .rela.plt section. */ | |
3562 | rela.r_offset = (htab->elf.sgotplt->output_section->vma | |
3563 | + htab->elf.sgotplt->output_offset | |
3564 | + got_offset); | |
3565 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3566 | rela.r_addend = 0; | |
3567 | loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela); | |
3568 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
3569 | ||
3570 | if (!h->def_regular) | |
3571 | { | |
3572 | /* Mark the symbol as undefined, rather than as defined in | |
3573 | the .plt section. Leave the value alone. This is a clue | |
3574 | for the dynamic linker, to make function pointer | |
3575 | comparisons work between an application and shared | |
3576 | library. */ | |
3577 | sym->st_shndx = SHN_UNDEF; | |
3578 | } | |
a85d7ed0 NC |
3579 | } |
3580 | } | |
ec338859 | 3581 | |
69fc87f1 MS |
3582 | if (h->got.offset != (bfd_vma) -1 |
3583 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD | |
3584 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE | |
3585 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT) | |
a85d7ed0 | 3586 | { |
a85d7ed0 | 3587 | Elf_Internal_Rela rela; |
947216bf | 3588 | bfd_byte *loc; |
a85d7ed0 NC |
3589 | |
3590 | /* This symbol has an entry in the global offset table. Set it | |
26e41594 | 3591 | up. */ |
a85d7ed0 | 3592 | |
f41345a7 | 3593 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
0451c93c | 3594 | abort (); |
a85d7ed0 | 3595 | |
f41345a7 AK |
3596 | rela.r_offset = (htab->elf.sgot->output_section->vma |
3597 | + htab->elf.sgot->output_offset | |
dc810e39 | 3598 | + (h->got.offset &~ (bfd_vma) 1)); |
a85d7ed0 NC |
3599 | |
3600 | /* If this is a static link, or it is a -Bsymbolic link and the | |
3601 | symbol is defined locally or was forced to be local because | |
3602 | of a version file, we just want to emit a RELATIVE reloc. | |
3603 | The entry in the global offset table will already have been | |
3604 | initialized in the relocate_section function. */ | |
470b557a AK |
3605 | if (h->def_regular && s390_is_ifunc_symbol_p (h)) |
3606 | { | |
0e1862bb | 3607 | if (bfd_link_pic (info)) |
470b557a AK |
3608 | { |
3609 | /* An explicit GOT slot usage needs GLOB_DAT. If the | |
3610 | symbol references local the implicit got.iplt slot | |
3611 | will be used and the IRELATIVE reloc has been created | |
3612 | above. */ | |
3613 | goto do_glob_dat; | |
3614 | } | |
3615 | else | |
3616 | { | |
3617 | /* For non-shared objects explicit GOT slots must be | |
3618 | filled with the PLT slot address for pointer | |
3619 | equality reasons. */ | |
3620 | bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma | |
3621 | + htab->elf.iplt->output_offset | |
3622 | + h->plt.offset), | |
3623 | htab->elf.sgot->contents + h->got.offset); | |
3624 | return TRUE; | |
3625 | } | |
3626 | } | |
0e1862bb | 3627 | else if (bfd_link_pic (info) |
ceada896 | 3628 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
0451c93c | 3629 | { |
470b557a AK |
3630 | /* If this is a static link, or it is a -Bsymbolic link and |
3631 | the symbol is defined locally or was forced to be local | |
3632 | because of a version file, we just want to emit a | |
3633 | RELATIVE reloc. The entry in the global offset table | |
3634 | will already have been initialized in the | |
3635 | relocate_section function. */ | |
8170f769 | 3636 | if (!(h->def_regular || ELF_COMMON_DEF_P (h))) |
8c21ca21 | 3637 | return FALSE; |
0451c93c MS |
3638 | BFD_ASSERT((h->got.offset & 1) != 0); |
3639 | rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
3640 | rela.r_addend = (h->root.u.def.value | |
26e41594 AM |
3641 | + h->root.u.def.section->output_section->vma |
3642 | + h->root.u.def.section->output_offset); | |
3643 | } | |
a85d7ed0 NC |
3644 | else |
3645 | { | |
3646 | BFD_ASSERT((h->got.offset & 1) == 0); | |
470b557a | 3647 | do_glob_dat: |
f41345a7 | 3648 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset); |
a85d7ed0 | 3649 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT); |
26e41594 AM |
3650 | rela.r_addend = 0; |
3651 | } | |
a85d7ed0 | 3652 | |
f41345a7 AK |
3653 | loc = htab->elf.srelgot->contents; |
3654 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 3655 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3656 | } |
3657 | ||
f5385ebf | 3658 | if (h->needs_copy) |
a85d7ed0 | 3659 | { |
a85d7ed0 | 3660 | Elf_Internal_Rela rela; |
5474d94f | 3661 | asection *s; |
947216bf | 3662 | bfd_byte *loc; |
a85d7ed0 NC |
3663 | |
3664 | /* This symbols needs a copy reloc. Set it up. */ | |
3665 | ||
0451c93c MS |
3666 | if (h->dynindx == -1 |
3667 | || (h->root.type != bfd_link_hash_defined | |
3668 | && h->root.type != bfd_link_hash_defweak) | |
5474d94f AM |
3669 | || htab->elf.srelbss == NULL |
3670 | || htab->elf.sreldynrelro == NULL) | |
0451c93c | 3671 | abort (); |
a85d7ed0 NC |
3672 | |
3673 | rela.r_offset = (h->root.u.def.value | |
3674 | + h->root.u.def.section->output_section->vma | |
3675 | + h->root.u.def.section->output_offset); | |
3676 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY); | |
3677 | rela.r_addend = 0; | |
afbf7e8e | 3678 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
3679 | s = htab->elf.sreldynrelro; |
3680 | else | |
3681 | s = htab->elf.srelbss; | |
3682 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 3683 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3684 | } |
3685 | ||
3686 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 3687 | if (h == htab->elf.hdynamic |
22edb2f1 RS |
3688 | || h == htab->elf.hgot |
3689 | || h == htab->elf.hplt) | |
a85d7ed0 NC |
3690 | sym->st_shndx = SHN_ABS; |
3691 | ||
b34976b6 | 3692 | return TRUE; |
a85d7ed0 NC |
3693 | } |
3694 | ||
0451c93c MS |
3695 | /* Used to decide how to sort relocs in an optimal manner for the |
3696 | dynamic linker, before writing them out. */ | |
3697 | ||
3698 | static enum elf_reloc_type_class | |
7e612e98 AM |
3699 | elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
3700 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
3701 | const Elf_Internal_Rela *rela) | |
0451c93c | 3702 | { |
0f042c67 AK |
3703 | bfd *abfd = info->output_bfd; |
3704 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3705 | struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info); | |
3706 | unsigned long r_symndx = ELF32_R_SYM (rela->r_info); | |
3707 | Elf_Internal_Sym sym; | |
3708 | ||
3709 | if (htab->elf.dynsym == NULL | |
3710 | || !bed->s->swap_symbol_in (abfd, | |
3711 | (htab->elf.dynsym->contents | |
3712 | + r_symndx * bed->s->sizeof_sym), | |
3713 | 0, &sym)) | |
3714 | abort (); | |
3715 | ||
3716 | /* Check relocation against STT_GNU_IFUNC symbol. */ | |
3717 | if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
3718 | return reloc_class_ifunc; | |
3719 | ||
0451c93c MS |
3720 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
3721 | { | |
3722 | case R_390_RELATIVE: | |
3723 | return reloc_class_relative; | |
3724 | case R_390_JMP_SLOT: | |
3725 | return reloc_class_plt; | |
3726 | case R_390_COPY: | |
3727 | return reloc_class_copy; | |
3728 | default: | |
3729 | return reloc_class_normal; | |
3730 | } | |
3731 | } | |
3732 | ||
a85d7ed0 NC |
3733 | /* Finish up the dynamic sections. */ |
3734 | ||
b34976b6 | 3735 | static bfd_boolean |
2c3fc389 NC |
3736 | elf_s390_finish_dynamic_sections (bfd *output_bfd, |
3737 | struct bfd_link_info *info) | |
a85d7ed0 | 3738 | { |
0451c93c | 3739 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
3740 | bfd *dynobj; |
3741 | asection *sdyn; | |
470b557a AK |
3742 | bfd *ibfd; |
3743 | unsigned int i; | |
a85d7ed0 | 3744 | |
0451c93c MS |
3745 | htab = elf_s390_hash_table (info); |
3746 | dynobj = htab->elf.dynobj; | |
3d4d4302 | 3747 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
a85d7ed0 | 3748 | |
0451c93c | 3749 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 | 3750 | { |
a85d7ed0 NC |
3751 | Elf32_External_Dyn *dyncon, *dynconend; |
3752 | ||
f41345a7 | 3753 | if (sdyn == NULL || htab->elf.sgot == NULL) |
0451c93c | 3754 | abort (); |
a85d7ed0 NC |
3755 | |
3756 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 3757 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
a85d7ed0 NC |
3758 | for (; dyncon < dynconend; dyncon++) |
3759 | { | |
3760 | Elf_Internal_Dyn dyn; | |
a85d7ed0 | 3761 | asection *s; |
ec338859 | 3762 | |
a85d7ed0 | 3763 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
ec338859 | 3764 | |
a85d7ed0 NC |
3765 | switch (dyn.d_tag) |
3766 | { | |
3767 | default: | |
0451c93c | 3768 | continue; |
ec338859 | 3769 | |
a85d7ed0 | 3770 | case DT_PLTGOT: |
4ade44b7 AM |
3771 | s = htab->elf.sgotplt; |
3772 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
0451c93c | 3773 | break; |
ec338859 | 3774 | |
a85d7ed0 | 3775 | case DT_JMPREL: |
4ade44b7 AM |
3776 | s = htab->elf.srelplt; |
3777 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
a85d7ed0 NC |
3778 | break; |
3779 | ||
3780 | case DT_PLTRELSZ: | |
79c12fae AK |
3781 | dyn.d_un.d_val = htab->elf.srelplt->size; |
3782 | if (htab->elf.irelplt) | |
3783 | dyn.d_un.d_val += htab->elf.irelplt->size; | |
a85d7ed0 NC |
3784 | break; |
3785 | } | |
0451c93c MS |
3786 | |
3787 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
a85d7ed0 NC |
3788 | } |
3789 | ||
3790 | /* Fill in the special first entry in the procedure linkage table. */ | |
f41345a7 | 3791 | if (htab->elf.splt && htab->elf.splt->size > 0) |
a85d7ed0 | 3792 | { |
f41345a7 | 3793 | memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE); |
0e1862bb | 3794 | if (bfd_link_pic (info)) |
0451c93c | 3795 | { |
f41345a7 | 3796 | memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry, |
9aa17453 AK |
3797 | PLT_FIRST_ENTRY_SIZE); |
3798 | } | |
26e41594 | 3799 | else |
9aa17453 | 3800 | { |
f41345a7 | 3801 | memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry, |
9aa17453 | 3802 | PLT_FIRST_ENTRY_SIZE); |
26e41594 | 3803 | bfd_put_32 (output_bfd, |
f41345a7 AK |
3804 | htab->elf.sgotplt->output_section->vma |
3805 | + htab->elf.sgotplt->output_offset, | |
3806 | htab->elf.splt->contents + 24); | |
ceada896 | 3807 | } |
f41345a7 | 3808 | elf_section_data (htab->elf.splt->output_section) |
0451c93c | 3809 | ->this_hdr.sh_entsize = 4; |
a85d7ed0 NC |
3810 | } |
3811 | ||
3812 | } | |
3813 | ||
f41345a7 | 3814 | if (htab->elf.sgotplt) |
a85d7ed0 | 3815 | { |
0451c93c | 3816 | /* Fill in the first three entries in the global offset table. */ |
f41345a7 | 3817 | if (htab->elf.sgotplt->size > 0) |
0451c93c MS |
3818 | { |
3819 | bfd_put_32 (output_bfd, | |
3820 | (sdyn == NULL ? (bfd_vma) 0 | |
3821 | : sdyn->output_section->vma + sdyn->output_offset), | |
f41345a7 | 3822 | htab->elf.sgotplt->contents); |
0451c93c | 3823 | /* One entry for shared object struct ptr. */ |
f41345a7 | 3824 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4); |
0451c93c | 3825 | /* One entry for _dl_runtime_resolve. */ |
f41345a7 | 3826 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8); |
0451c93c | 3827 | } |
a85d7ed0 | 3828 | |
f41345a7 | 3829 | elf_section_data (htab->elf.sgotplt->output_section) |
0451c93c MS |
3830 | ->this_hdr.sh_entsize = 4; |
3831 | } | |
470b557a | 3832 | /* Finish dynamic symbol for local IFUNC symbols. */ |
c72f2fb2 | 3833 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
470b557a AK |
3834 | { |
3835 | struct plt_entry *local_plt; | |
3836 | Elf_Internal_Sym *isym; | |
3837 | Elf_Internal_Shdr *symtab_hdr; | |
3838 | ||
3839 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
3840 | ||
1ef692ea AK |
3841 | if (!is_s390_elf (ibfd)) |
3842 | continue; | |
3843 | ||
470b557a AK |
3844 | local_plt = elf_s390_local_plt (ibfd); |
3845 | if (local_plt != NULL) | |
3846 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
3847 | { | |
3848 | if (local_plt[i].plt.offset != (bfd_vma) -1) | |
3849 | { | |
3850 | asection *sec = local_plt[i].sec; | |
3851 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i); | |
3852 | if (isym == NULL) | |
3853 | return FALSE; | |
3854 | ||
3855 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
3856 | elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab, | |
3857 | local_plt[i].plt.offset, | |
3858 | isym->st_value | |
3859 | + sec->output_section->vma | |
3860 | + sec->output_offset); | |
3861 | ||
3862 | } | |
3863 | } | |
3864 | } | |
b34976b6 | 3865 | return TRUE; |
a85d7ed0 | 3866 | } |
e3e9290d AA |
3867 | \f |
3868 | /* Support for core dump NOTE sections. */ | |
a85d7ed0 | 3869 | |
b34976b6 | 3870 | static bfd_boolean |
2c3fc389 | 3871 | elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note) |
979f4a38 NC |
3872 | { |
3873 | int offset; | |
eea6121a | 3874 | unsigned int size; |
979f4a38 NC |
3875 | |
3876 | switch (note->descsz) | |
3877 | { | |
ceada896 AA |
3878 | default: |
3879 | return FALSE; | |
979f4a38 | 3880 | |
ceada896 AA |
3881 | case 224: /* S/390 Linux. */ |
3882 | /* pr_cursig */ | |
3883 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
979f4a38 | 3884 | |
ceada896 AA |
3885 | /* pr_pid */ |
3886 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); | |
979f4a38 | 3887 | |
ceada896 AA |
3888 | /* pr_reg */ |
3889 | offset = 72; | |
3890 | size = 144; | |
3891 | break; | |
979f4a38 NC |
3892 | } |
3893 | ||
3894 | /* Make a ".reg/999" section. */ | |
3895 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 3896 | size, note->descpos + offset); |
979f4a38 NC |
3897 | } |
3898 | ||
e3e9290d AA |
3899 | static bfd_boolean |
3900 | elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
3901 | { | |
3902 | switch (note->descsz) | |
3903 | { | |
3904 | default: | |
3905 | return FALSE; | |
3906 | ||
3907 | case 124: /* sizeof(struct elf_prpsinfo) on s390 */ | |
3908 | elf_tdata (abfd)->core->pid | |
3909 | = bfd_get_32 (abfd, note->descdata + 12); | |
3910 | elf_tdata (abfd)->core->program | |
3911 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
3912 | elf_tdata (abfd)->core->command | |
3913 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
3914 | break; | |
3915 | } | |
3916 | ||
3917 | /* Note that for some reason, a spurious space is tacked | |
3918 | onto the end of the args in some (at least one anyway) | |
3919 | implementations, so strip it off if it exists. */ | |
3920 | ||
3921 | { | |
3922 | char *command = elf_tdata (abfd)->core->command; | |
3923 | int n = strlen (command); | |
3924 | ||
3925 | if (0 < n && command[n - 1] == ' ') | |
3926 | command[n - 1] = '\0'; | |
3927 | } | |
3928 | ||
3929 | return TRUE; | |
3930 | } | |
3931 | ||
3932 | static char * | |
3933 | elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz, | |
3934 | int note_type, ...) | |
3935 | { | |
3936 | va_list ap; | |
3937 | ||
3938 | switch (note_type) | |
3939 | { | |
3940 | default: | |
3941 | return NULL; | |
3942 | ||
3943 | case NT_PRPSINFO: | |
3944 | { | |
602f1657 | 3945 | char data[124] ATTRIBUTE_NONSTRING = { 0 }; |
e3e9290d AA |
3946 | const char *fname, *psargs; |
3947 | ||
3948 | va_start (ap, note_type); | |
3949 | fname = va_arg (ap, const char *); | |
3950 | psargs = va_arg (ap, const char *); | |
3951 | va_end (ap); | |
3952 | ||
3953 | strncpy (data + 28, fname, 16); | |
898ade12 | 3954 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 3955 | DIAGNOSTIC_PUSH; |
be3e27bb | 3956 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
3957 | -Wstringop-truncation: |
3958 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
3959 | */ | |
95da9854 L |
3960 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
3961 | #endif | |
e3e9290d | 3962 | strncpy (data + 44, psargs, 80); |
898ade12 | 3963 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 3964 | DIAGNOSTIC_POP; |
fe75810f | 3965 | #endif |
e3e9290d AA |
3966 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
3967 | &data, sizeof (data)); | |
3968 | } | |
3969 | ||
3970 | case NT_PRSTATUS: | |
3971 | { | |
3972 | char data[224] = { 0 }; | |
3973 | long pid; | |
3974 | int cursig; | |
3975 | const void *gregs; | |
3976 | ||
3977 | va_start (ap, note_type); | |
3978 | pid = va_arg (ap, long); | |
3979 | cursig = va_arg (ap, int); | |
3980 | gregs = va_arg (ap, const void *); | |
3981 | va_end (ap); | |
3982 | ||
3983 | bfd_put_16 (abfd, cursig, data + 12); | |
3984 | bfd_put_32 (abfd, pid, data + 24); | |
3985 | memcpy (data + 72, gregs, 144); | |
3986 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, | |
3987 | &data, sizeof (data)); | |
3988 | } | |
3989 | } | |
3990 | /* NOTREACHED */ | |
3991 | } | |
3992 | \f | |
4c45e5c9 JJ |
3993 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
3994 | or (bfd_vma) -1 if it should not be included. */ | |
3995 | ||
3996 | static bfd_vma | |
3997 | elf_s390_plt_sym_val (bfd_vma i, const asection *plt, | |
3998 | const arelent *rel ATTRIBUTE_UNUSED) | |
3999 | { | |
4000 | return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE; | |
4001 | } | |
4002 | ||
643f7afb AK |
4003 | /* Merge backend specific data from an object file to the output |
4004 | object file when linking. */ | |
4005 | ||
55786da2 | 4006 | static bfd_boolean |
50e03d47 | 4007 | elf32_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
55786da2 | 4008 | { |
50e03d47 AM |
4009 | bfd *obfd = info->output_bfd; |
4010 | ||
643f7afb AK |
4011 | if (!is_s390_elf (ibfd) || !is_s390_elf (obfd)) |
4012 | return TRUE; | |
4013 | ||
50e03d47 | 4014 | if (!elf_s390_merge_obj_attributes (ibfd, info)) |
643f7afb AK |
4015 | return FALSE; |
4016 | ||
55786da2 AK |
4017 | elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags; |
4018 | return TRUE; | |
4019 | } | |
4020 | ||
4c45e5c9 | 4021 | |
6d00b590 | 4022 | #define TARGET_BIG_SYM s390_elf32_vec |
a85d7ed0 NC |
4023 | #define TARGET_BIG_NAME "elf32-s390" |
4024 | #define ELF_ARCH bfd_arch_s390 | |
ae95ffa6 | 4025 | #define ELF_TARGET_ID S390_ELF_DATA |
a85d7ed0 NC |
4026 | #define ELF_MACHINE_CODE EM_S390 |
4027 | #define ELF_MACHINE_ALT1 EM_S390_OLD | |
4028 | #define ELF_MAXPAGESIZE 0x1000 | |
4029 | ||
4030 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4031 | #define elf_backend_can_refcount 1 |
a85d7ed0 NC |
4032 | #define elf_backend_want_got_plt 1 |
4033 | #define elf_backend_plt_readonly 1 | |
4034 | #define elf_backend_want_plt_sym 0 | |
4035 | #define elf_backend_got_header_size 12 | |
5474d94f | 4036 | #define elf_backend_want_dynrelro 1 |
b491616a | 4037 | #define elf_backend_rela_normal 1 |
a85d7ed0 | 4038 | |
26e41594 | 4039 | #define elf_info_to_howto elf_s390_info_to_howto |
a85d7ed0 | 4040 | |
a85d7ed0 NC |
4041 | #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name |
4042 | #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create | |
4043 | #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup | |
157090f7 | 4044 | #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup |
a85d7ed0 | 4045 | |
55786da2 AK |
4046 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data |
4047 | ||
a85d7ed0 | 4048 | #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol |
26e41594 | 4049 | #define elf_backend_check_relocs elf_s390_check_relocs |
0451c93c | 4050 | #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol |
9d19e4fd | 4051 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
a85d7ed0 NC |
4052 | #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections |
4053 | #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol | |
26e41594 | 4054 | #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook |
0451c93c | 4055 | #define elf_backend_reloc_type_class elf_s390_reloc_type_class |
26e41594 | 4056 | #define elf_backend_relocate_section elf_s390_relocate_section |
a85d7ed0 | 4057 | #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections |
74541ad4 | 4058 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
979f4a38 | 4059 | #define elf_backend_grok_prstatus elf_s390_grok_prstatus |
e3e9290d AA |
4060 | #define elf_backend_grok_psinfo elf_s390_grok_psinfo |
4061 | #define elf_backend_write_core_note elf_s390_write_core_note | |
4c45e5c9 | 4062 | #define elf_backend_plt_sym_val elf_s390_plt_sym_val |
07d6d2b8 | 4063 | #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p |
a85d7ed0 | 4064 | |
69fc87f1 | 4065 | #define bfd_elf32_mkobject elf_s390_mkobject |
26e41594 | 4066 | #define elf_backend_object_p elf_s390_object_p |
a85d7ed0 | 4067 | |
a2f63b2e MR |
4068 | #define elf_backend_linux_prpsinfo32_ugid16 TRUE |
4069 | ||
a85d7ed0 | 4070 | #include "elf32-target.h" |