Commit | Line | Data |
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a85d7ed0 | 1 | /* IBM S/390-specific support for 32-bit ELF |
b3adc24a | 2 | Copyright (C) 2000-2020 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 | |
5236c819 MS |
657 | /* Number of GOTPLT references for a function. */ |
658 | bfd_signed_vma gotplt_refcount; | |
69fc87f1 MS |
659 | |
660 | #define GOT_UNKNOWN 0 | |
661 | #define GOT_NORMAL 1 | |
662 | #define GOT_TLS_GD 2 | |
663 | #define GOT_TLS_IE 3 | |
664 | #define GOT_TLS_IE_NLT 4 | |
665 | unsigned char tls_type; | |
470b557a AK |
666 | |
667 | /* For pointer equality reasons we might need to change the symbol | |
668 | type from STT_GNU_IFUNC to STT_FUNC together with its value and | |
669 | section entry. So after alloc_dynrelocs only these values should | |
670 | be used. In order to check whether a symbol is IFUNC use | |
671 | s390_is_ifunc_symbol_p. */ | |
672 | bfd_vma ifunc_resolver_address; | |
673 | asection *ifunc_resolver_section; | |
a85d7ed0 NC |
674 | }; |
675 | ||
69fc87f1 MS |
676 | #define elf_s390_hash_entry(ent) \ |
677 | ((struct elf_s390_link_hash_entry *)(ent)) | |
678 | ||
470b557a AK |
679 | /* This structure represents an entry in the local PLT list needed for |
680 | local IFUNC symbols. */ | |
681 | struct plt_entry | |
682 | { | |
683 | /* The section of the local symbol. | |
684 | Set in relocate_section and used in finish_dynamic_sections. */ | |
685 | asection *sec; | |
686 | ||
687 | union | |
688 | { | |
689 | bfd_signed_vma refcount; | |
690 | bfd_vma offset; | |
691 | } plt; | |
692 | }; | |
693 | ||
0ffa91dd NC |
694 | /* NOTE: Keep this structure in sync with |
695 | the one declared in elf64-s390.c. */ | |
69fc87f1 MS |
696 | struct elf_s390_obj_tdata |
697 | { | |
698 | struct elf_obj_tdata root; | |
699 | ||
470b557a AK |
700 | /* A local PLT is needed for ifunc symbols. */ |
701 | struct plt_entry *local_plt; | |
702 | ||
0ffa91dd | 703 | /* TLS type for each local got entry. */ |
69fc87f1 MS |
704 | char *local_got_tls_type; |
705 | }; | |
706 | ||
707 | #define elf_s390_tdata(abfd) \ | |
708 | ((struct elf_s390_obj_tdata *) (abfd)->tdata.any) | |
709 | ||
470b557a AK |
710 | #define elf_s390_local_plt(abfd) \ |
711 | (elf_s390_tdata (abfd)->local_plt) | |
712 | ||
69fc87f1 MS |
713 | #define elf_s390_local_got_tls_type(abfd) \ |
714 | (elf_s390_tdata (abfd)->local_got_tls_type) | |
715 | ||
0ffa91dd NC |
716 | #define is_s390_elf(bfd) \ |
717 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
718 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 719 | && elf_object_id (bfd) == S390_ELF_DATA) |
0ffa91dd | 720 | |
69fc87f1 | 721 | static bfd_boolean |
62d7a5f6 | 722 | elf_s390_mkobject (bfd *abfd) |
69fc87f1 | 723 | { |
0ffa91dd | 724 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata), |
4dfe6ac6 | 725 | S390_ELF_DATA); |
69fc87f1 MS |
726 | } |
727 | ||
728 | static bfd_boolean | |
2c3fc389 | 729 | elf_s390_object_p (bfd *abfd) |
69fc87f1 | 730 | { |
69fc87f1 MS |
731 | /* Set the right machine number for an s390 elf32 file. */ |
732 | return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31); | |
733 | } | |
734 | ||
a85d7ed0 NC |
735 | /* s390 ELF linker hash table. */ |
736 | ||
737 | struct elf_s390_link_hash_table | |
738 | { | |
0451c93c | 739 | struct elf_link_hash_table elf; |
a85d7ed0 | 740 | |
0451c93c | 741 | /* Short-cuts to get to dynamic linker sections. */ |
470b557a | 742 | asection *irelifunc; |
ec338859 | 743 | |
2c3fc389 NC |
744 | union |
745 | { | |
69fc87f1 MS |
746 | bfd_signed_vma refcount; |
747 | bfd_vma offset; | |
748 | } tls_ldm_got; | |
749 | ||
87d72d41 AM |
750 | /* Small local sym cache. */ |
751 | struct sym_cache sym_cache; | |
0451c93c | 752 | }; |
a85d7ed0 NC |
753 | |
754 | /* Get the s390 ELF linker hash table from a link_info structure. */ | |
755 | ||
756 | #define elf_s390_hash_table(p) \ | |
4dfe6ac6 NC |
757 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
758 | == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL) | |
a85d7ed0 | 759 | |
470b557a AK |
760 | #undef ELF64 |
761 | #include "elf-s390-common.c" | |
762 | ||
a85d7ed0 NC |
763 | /* Create an entry in an s390 ELF linker hash table. */ |
764 | ||
765 | static struct bfd_hash_entry * | |
2c3fc389 NC |
766 | link_hash_newfunc (struct bfd_hash_entry *entry, |
767 | struct bfd_hash_table *table, | |
768 | const char *string) | |
a85d7ed0 | 769 | { |
a85d7ed0 NC |
770 | /* Allocate the structure if it has not already been allocated by a |
771 | subclass. */ | |
0451c93c MS |
772 | if (entry == NULL) |
773 | { | |
774 | entry = bfd_hash_allocate (table, | |
775 | sizeof (struct elf_s390_link_hash_entry)); | |
776 | if (entry == NULL) | |
777 | return entry; | |
778 | } | |
ec338859 | 779 | |
a85d7ed0 | 780 | /* Call the allocation method of the superclass. */ |
0451c93c MS |
781 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
782 | if (entry != NULL) | |
a85d7ed0 | 783 | { |
0451c93c | 784 | struct elf_s390_link_hash_entry *eh; |
ec338859 | 785 | |
0451c93c | 786 | eh = (struct elf_s390_link_hash_entry *) entry; |
5236c819 | 787 | eh->gotplt_refcount = 0; |
69fc87f1 | 788 | eh->tls_type = GOT_UNKNOWN; |
470b557a AK |
789 | eh->ifunc_resolver_address = 0; |
790 | eh->ifunc_resolver_section = NULL; | |
a85d7ed0 NC |
791 | } |
792 | ||
0451c93c | 793 | return entry; |
a85d7ed0 NC |
794 | } |
795 | ||
796 | /* Create an s390 ELF linker hash table. */ | |
797 | ||
798 | static struct bfd_link_hash_table * | |
2c3fc389 | 799 | elf_s390_link_hash_table_create (bfd *abfd) |
a85d7ed0 NC |
800 | { |
801 | struct elf_s390_link_hash_table *ret; | |
986f0783 | 802 | size_t amt = sizeof (struct elf_s390_link_hash_table); |
a85d7ed0 | 803 | |
7bf52ea2 | 804 | ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt); |
0451c93c | 805 | if (ret == NULL) |
a85d7ed0 NC |
806 | return NULL; |
807 | ||
66eb6687 | 808 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
809 | sizeof (struct elf_s390_link_hash_entry), |
810 | S390_ELF_DATA)) | |
a85d7ed0 | 811 | { |
e2d34d7d | 812 | free (ret); |
a85d7ed0 NC |
813 | return NULL; |
814 | } | |
815 | ||
0451c93c MS |
816 | return &ret->elf.root; |
817 | } | |
818 | ||
0451c93c MS |
819 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
820 | ||
821 | static void | |
2c3fc389 NC |
822 | elf_s390_copy_indirect_symbol (struct bfd_link_info *info, |
823 | struct elf_link_hash_entry *dir, | |
824 | struct elf_link_hash_entry *ind) | |
0451c93c MS |
825 | { |
826 | struct elf_s390_link_hash_entry *edir, *eind; | |
827 | ||
828 | edir = (struct elf_s390_link_hash_entry *) dir; | |
829 | eind = (struct elf_s390_link_hash_entry *) ind; | |
830 | ||
190eb1dd | 831 | if (ind->dyn_relocs != NULL) |
0451c93c | 832 | { |
190eb1dd | 833 | if (dir->dyn_relocs != NULL) |
0451c93c | 834 | { |
00d8c7a9 AK |
835 | struct elf_dyn_relocs **pp; |
836 | struct elf_dyn_relocs *p; | |
0451c93c | 837 | |
fcfa13d2 | 838 | /* Add reloc counts against the indirect sym to the direct sym |
0451c93c | 839 | list. Merge any entries against the same section. */ |
190eb1dd | 840 | for (pp = &ind->dyn_relocs; (p = *pp) != NULL; ) |
0451c93c | 841 | { |
00d8c7a9 | 842 | struct elf_dyn_relocs *q; |
0451c93c | 843 | |
190eb1dd | 844 | for (q = dir->dyn_relocs; q != NULL; q = q->next) |
0451c93c MS |
845 | if (q->sec == p->sec) |
846 | { | |
847 | q->pc_count += p->pc_count; | |
848 | q->count += p->count; | |
849 | *pp = p->next; | |
850 | break; | |
851 | } | |
852 | if (q == NULL) | |
853 | pp = &p->next; | |
854 | } | |
190eb1dd | 855 | *pp = dir->dyn_relocs; |
0451c93c MS |
856 | } |
857 | ||
190eb1dd L |
858 | dir->dyn_relocs = ind->dyn_relocs; |
859 | ind->dyn_relocs = NULL; | |
0451c93c MS |
860 | } |
861 | ||
69fc87f1 MS |
862 | if (ind->root.type == bfd_link_hash_indirect |
863 | && dir->got.refcount <= 0) | |
864 | { | |
865 | edir->tls_type = eind->tls_type; | |
866 | eind->tls_type = GOT_UNKNOWN; | |
867 | } | |
868 | ||
64285810 MS |
869 | if (ELIMINATE_COPY_RELOCS |
870 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
871 | && dir->dynamic_adjusted) |
872 | { | |
873 | /* If called to transfer flags for a weakdef during processing | |
874 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
875 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
e81830c5 AM |
876 | if (dir->versioned != versioned_hidden) |
877 | dir->ref_dynamic |= ind->ref_dynamic; | |
f5385ebf AM |
878 | dir->ref_regular |= ind->ref_regular; |
879 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
880 | dir->needs_plt |= ind->needs_plt; | |
881 | } | |
64285810 | 882 | else |
fcfa13d2 | 883 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
0451c93c | 884 | } |
a85d7ed0 | 885 | |
69fc87f1 | 886 | static int |
2c3fc389 NC |
887 | elf_s390_tls_transition (struct bfd_link_info *info, |
888 | int r_type, | |
889 | int is_local) | |
69fc87f1 | 890 | { |
0e1862bb | 891 | if (bfd_link_pic (info)) |
69fc87f1 MS |
892 | return r_type; |
893 | ||
894 | switch (r_type) | |
895 | { | |
896 | case R_390_TLS_GD32: | |
897 | case R_390_TLS_IE32: | |
898 | if (is_local) | |
899 | return R_390_TLS_LE32; | |
900 | return R_390_TLS_IE32; | |
901 | case R_390_TLS_GOTIE32: | |
902 | if (is_local) | |
903 | return R_390_TLS_LE32; | |
904 | return R_390_TLS_GOTIE32; | |
905 | case R_390_TLS_LDM32: | |
906 | return R_390_TLS_LE32; | |
907 | } | |
908 | ||
909 | return r_type; | |
910 | } | |
911 | ||
a85d7ed0 NC |
912 | /* Look through the relocs for a section during the first phase, and |
913 | allocate space in the global offset table or procedure linkage | |
914 | table. */ | |
915 | ||
b34976b6 | 916 | static bfd_boolean |
2c3fc389 NC |
917 | elf_s390_check_relocs (bfd *abfd, |
918 | struct bfd_link_info *info, | |
919 | asection *sec, | |
920 | const Elf_Internal_Rela *relocs) | |
a85d7ed0 | 921 | { |
0451c93c | 922 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
923 | Elf_Internal_Shdr *symtab_hdr; |
924 | struct elf_link_hash_entry **sym_hashes; | |
a85d7ed0 NC |
925 | const Elf_Internal_Rela *rel; |
926 | const Elf_Internal_Rela *rel_end; | |
a85d7ed0 | 927 | asection *sreloc; |
5236c819 | 928 | bfd_signed_vma *local_got_refcounts; |
69fc87f1 | 929 | int tls_type, old_tls_type; |
470b557a | 930 | Elf_Internal_Sym *isym; |
a85d7ed0 | 931 | |
0e1862bb | 932 | if (bfd_link_relocatable (info)) |
b34976b6 | 933 | return TRUE; |
a85d7ed0 | 934 | |
0ffa91dd NC |
935 | BFD_ASSERT (is_s390_elf (abfd)); |
936 | ||
0451c93c | 937 | htab = elf_s390_hash_table (info); |
0ffa91dd | 938 | symtab_hdr = &elf_symtab_hdr (abfd); |
a85d7ed0 | 939 | sym_hashes = elf_sym_hashes (abfd); |
5236c819 | 940 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 941 | |
a85d7ed0 NC |
942 | sreloc = NULL; |
943 | ||
944 | rel_end = relocs + sec->reloc_count; | |
945 | for (rel = relocs; rel < rel_end; rel++) | |
946 | { | |
69fc87f1 | 947 | unsigned int r_type; |
d42c267e | 948 | unsigned int r_symndx; |
a85d7ed0 NC |
949 | struct elf_link_hash_entry *h; |
950 | ||
951 | r_symndx = ELF32_R_SYM (rel->r_info); | |
952 | ||
0451c93c MS |
953 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
954 | { | |
695344c0 | 955 | /* xgettext:c-format */ |
871b3ab2 | 956 | _bfd_error_handler (_("%pB: bad symbol index: %d"), |
4eca0228 | 957 | abfd, r_symndx); |
b34976b6 | 958 | return FALSE; |
0451c93c MS |
959 | } |
960 | ||
a85d7ed0 | 961 | if (r_symndx < symtab_hdr->sh_info) |
470b557a AK |
962 | { |
963 | /* A local symbol. */ | |
964 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
965 | abfd, r_symndx); | |
966 | if (isym == NULL) | |
967 | return FALSE; | |
968 | ||
969 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
970 | { | |
971 | struct plt_entry *plt; | |
972 | ||
0cb79d69 AK |
973 | if (htab->elf.dynobj == NULL) |
974 | htab->elf.dynobj = abfd; | |
975 | ||
470b557a AK |
976 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) |
977 | return FALSE; | |
978 | ||
979 | if (local_got_refcounts == NULL) | |
980 | { | |
981 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) | |
982 | return FALSE; | |
983 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
984 | } | |
985 | plt = elf_s390_local_plt (abfd); | |
986 | plt[r_symndx].plt.refcount++; | |
987 | } | |
988 | h = NULL; | |
989 | } | |
a85d7ed0 | 990 | else |
973a3492 L |
991 | { |
992 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
993 | while (h->root.type == bfd_link_hash_indirect | |
994 | || h->root.type == bfd_link_hash_warning) | |
995 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
996 | } | |
a85d7ed0 | 997 | |
5236c819 MS |
998 | /* Create got section and local_got_refcounts array if they |
999 | are needed. */ | |
69fc87f1 MS |
1000 | r_type = elf_s390_tls_transition (info, |
1001 | ELF32_R_TYPE (rel->r_info), | |
1002 | h == NULL); | |
1003 | switch (r_type) | |
a85d7ed0 NC |
1004 | { |
1005 | case R_390_GOT12: | |
5236c819 | 1006 | case R_390_GOT16: |
bd1ea41b | 1007 | case R_390_GOT20: |
a85d7ed0 | 1008 | case R_390_GOT32: |
befc3abb | 1009 | case R_390_GOTENT: |
5236c819 MS |
1010 | case R_390_GOTPLT12: |
1011 | case R_390_GOTPLT16: | |
bd1ea41b | 1012 | case R_390_GOTPLT20: |
5236c819 MS |
1013 | case R_390_GOTPLT32: |
1014 | case R_390_GOTPLTENT: | |
69fc87f1 MS |
1015 | case R_390_TLS_GD32: |
1016 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1017 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1018 | case R_390_TLS_GOTIE32: |
1019 | case R_390_TLS_IEENT: | |
1020 | case R_390_TLS_IE32: | |
1021 | case R_390_TLS_LDM32: | |
5236c819 MS |
1022 | if (h == NULL |
1023 | && local_got_refcounts == NULL) | |
a85d7ed0 | 1024 | { |
470b557a | 1025 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) |
5236c819 | 1026 | return FALSE; |
470b557a | 1027 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 1028 | } |
5236c819 MS |
1029 | /* Fall through. */ |
1030 | case R_390_GOTOFF16: | |
1031 | case R_390_GOTOFF32: | |
0451c93c | 1032 | case R_390_GOTPC: |
befc3abb | 1033 | case R_390_GOTPCDBL: |
f41345a7 | 1034 | if (htab->elf.sgot == NULL) |
0451c93c MS |
1035 | { |
1036 | if (htab->elf.dynobj == NULL) | |
1037 | htab->elf.dynobj = abfd; | |
ce558b89 | 1038 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) |
b34976b6 | 1039 | return FALSE; |
0451c93c | 1040 | } |
5236c819 MS |
1041 | } |
1042 | ||
470b557a AK |
1043 | if (h != NULL) |
1044 | { | |
1045 | if (htab->elf.dynobj == NULL) | |
1046 | htab->elf.dynobj = abfd; | |
1047 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
1048 | return FALSE; | |
1049 | ||
1050 | /* Make sure an IFUNC symbol defined in a non-shared object | |
1051 | always gets a PLT slot. */ | |
1052 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
1053 | { | |
1054 | /* The symbol is called by the dynamic loader in order | |
1055 | to resolve the relocation. So it is in fact also | |
1056 | referenced. */ | |
1057 | h->ref_regular = 1; | |
1058 | h->needs_plt = 1; | |
1059 | } | |
1060 | } | |
69fc87f1 | 1061 | switch (r_type) |
5236c819 | 1062 | { |
5236c819 MS |
1063 | case R_390_GOTPC: |
1064 | case R_390_GOTPCDBL: | |
470b557a AK |
1065 | /* These relocs do not need a GOT slot. They just load the |
1066 | GOT pointer itself or address something else relative to | |
1067 | the GOT. Since the GOT pointer has been set up above we | |
1068 | are done. */ | |
a85d7ed0 | 1069 | break; |
01a53584 AK |
1070 | case R_390_GOTOFF16: |
1071 | case R_390_GOTOFF32: | |
1072 | if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular) | |
1073 | break; | |
1a0670f3 | 1074 | /* Fall through. */ |
a85d7ed0 | 1075 | |
fb798c50 | 1076 | case R_390_PLT12DBL: |
26e41594 | 1077 | case R_390_PLT16DBL: |
fb798c50 | 1078 | case R_390_PLT24DBL: |
26e41594 | 1079 | case R_390_PLT32DBL: |
a85d7ed0 | 1080 | case R_390_PLT32: |
5236c819 MS |
1081 | case R_390_PLTOFF16: |
1082 | case R_390_PLTOFF32: | |
a85d7ed0 | 1083 | /* This symbol requires a procedure linkage table entry. We |
26e41594 AM |
1084 | actually build the entry in adjust_dynamic_symbol, |
1085 | because this might be a case of linking PIC code which is | |
1086 | never referenced by a dynamic object, in which case we | |
1087 | don't need to generate a procedure linkage table entry | |
1088 | after all. */ | |
a85d7ed0 NC |
1089 | |
1090 | /* If this is a local symbol, we resolve it directly without | |
26e41594 | 1091 | creating a procedure linkage table entry. */ |
5236c819 MS |
1092 | if (h != NULL) |
1093 | { | |
f5385ebf | 1094 | h->needs_plt = 1; |
5236c819 MS |
1095 | h->plt.refcount += 1; |
1096 | } | |
1097 | break; | |
a85d7ed0 | 1098 | |
5236c819 MS |
1099 | case R_390_GOTPLT12: |
1100 | case R_390_GOTPLT16: | |
bd1ea41b | 1101 | case R_390_GOTPLT20: |
5236c819 MS |
1102 | case R_390_GOTPLT32: |
1103 | case R_390_GOTPLTENT: | |
1104 | /* This symbol requires either a procedure linkage table entry | |
1105 | or an entry in the local got. We actually build the entry | |
1106 | in adjust_dynamic_symbol because whether this is really a | |
1107 | global reference can change and with it the fact if we have | |
1108 | to create a plt entry or a local got entry. To be able to | |
1109 | make a once global symbol a local one we have to keep track | |
1110 | of the number of gotplt references that exist for this | |
1111 | symbol. */ | |
1112 | if (h != NULL) | |
1113 | { | |
1114 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++; | |
f5385ebf | 1115 | h->needs_plt = 1; |
5236c819 MS |
1116 | h->plt.refcount += 1; |
1117 | } | |
1118 | else | |
1119 | local_got_refcounts[r_symndx] += 1; | |
a85d7ed0 NC |
1120 | break; |
1121 | ||
69fc87f1 MS |
1122 | case R_390_TLS_LDM32: |
1123 | htab->tls_ldm_got.refcount += 1; | |
1124 | break; | |
1125 | ||
1126 | case R_390_TLS_IE32: | |
1127 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1128 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1129 | case R_390_TLS_GOTIE32: |
1130 | case R_390_TLS_IEENT: | |
0e1862bb | 1131 | if (bfd_link_pic (info)) |
69fc87f1 | 1132 | info->flags |= DF_STATIC_TLS; |
ae9a127f | 1133 | /* Fall through. */ |
69fc87f1 MS |
1134 | |
1135 | case R_390_GOT12: | |
26e41594 | 1136 | case R_390_GOT16: |
bd1ea41b | 1137 | case R_390_GOT20: |
69fc87f1 MS |
1138 | case R_390_GOT32: |
1139 | case R_390_GOTENT: | |
1140 | case R_390_TLS_GD32: | |
1141 | /* This symbol requires a global offset table entry. */ | |
1142 | switch (r_type) | |
1143 | { | |
1144 | default: | |
1145 | case R_390_GOT12: | |
1146 | case R_390_GOT16: | |
bd1ea41b | 1147 | case R_390_GOT20: |
69fc87f1 MS |
1148 | case R_390_GOT32: |
1149 | case R_390_GOTENT: | |
1150 | tls_type = GOT_NORMAL; | |
1151 | break; | |
1152 | case R_390_TLS_GD32: | |
1153 | tls_type = GOT_TLS_GD; | |
1154 | break; | |
1155 | case R_390_TLS_IE32: | |
1156 | case R_390_TLS_GOTIE32: | |
1157 | tls_type = GOT_TLS_IE; | |
1158 | break; | |
1159 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1160 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1161 | case R_390_TLS_IEENT: |
1162 | tls_type = GOT_TLS_IE_NLT; | |
1163 | break; | |
1164 | } | |
1165 | ||
1166 | if (h != NULL) | |
1167 | { | |
1168 | h->got.refcount += 1; | |
1169 | old_tls_type = elf_s390_hash_entry(h)->tls_type; | |
1170 | } | |
1171 | else | |
1172 | { | |
1173 | local_got_refcounts[r_symndx] += 1; | |
1174 | old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx]; | |
1175 | } | |
1176 | /* If a TLS symbol is accessed using IE at least once, | |
1177 | there is no point to use dynamic model for it. */ | |
1178 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN) | |
1179 | { | |
1180 | if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL) | |
1181 | { | |
4eca0228 | 1182 | _bfd_error_handler |
695344c0 | 1183 | /* xgettext:c-format */ |
871b3ab2 | 1184 | (_("%pB: `%s' accessed both as normal and thread local symbol"), |
d003868e | 1185 | abfd, h->root.root.string); |
69fc87f1 MS |
1186 | return FALSE; |
1187 | } | |
1188 | if (old_tls_type > tls_type) | |
1189 | tls_type = old_tls_type; | |
1190 | } | |
1191 | ||
1192 | if (old_tls_type != tls_type) | |
1193 | { | |
1194 | if (h != NULL) | |
1195 | elf_s390_hash_entry (h)->tls_type = tls_type; | |
1196 | else | |
1197 | elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1198 | } | |
1199 | ||
1200 | if (r_type != R_390_TLS_IE32) | |
1201 | break; | |
ae9a127f | 1202 | /* Fall through. */ |
69fc87f1 MS |
1203 | |
1204 | case R_390_TLS_LE32: | |
e00d879a AK |
1205 | /* For static linking and executables this reloc will be |
1206 | calculated at linktime otherwise a TLS_TPOFF runtime | |
1207 | reloc will be generated. */ | |
0e1862bb | 1208 | if (r_type == R_390_TLS_LE32 && bfd_link_pie (info)) |
e00d879a AK |
1209 | break; |
1210 | ||
0e1862bb | 1211 | if (!bfd_link_pic (info)) |
69fc87f1 MS |
1212 | break; |
1213 | info->flags |= DF_STATIC_TLS; | |
ae9a127f | 1214 | /* Fall through. */ |
69fc87f1 | 1215 | |
26e41594 AM |
1216 | case R_390_8: |
1217 | case R_390_16: | |
a85d7ed0 | 1218 | case R_390_32: |
26e41594 | 1219 | case R_390_PC16: |
fb798c50 | 1220 | case R_390_PC12DBL: |
26e41594 | 1221 | case R_390_PC16DBL: |
fb798c50 | 1222 | case R_390_PC24DBL: |
befc3abb | 1223 | case R_390_PC32DBL: |
a85d7ed0 | 1224 | case R_390_PC32: |
99ba5125 | 1225 | if (h != NULL && bfd_link_executable (info)) |
0451c93c MS |
1226 | { |
1227 | /* If this reloc is in a read-only section, we might | |
1228 | need a copy reloc. We can't check reliably at this | |
1229 | stage whether the section is read-only, as input | |
1230 | sections have not yet been mapped to output sections. | |
1231 | Tentatively set the flag for now, and correct in | |
1232 | adjust_dynamic_symbol. */ | |
f5385ebf | 1233 | h->non_got_ref = 1; |
ec338859 | 1234 | |
0e1862bb | 1235 | if (!bfd_link_pic (info)) |
470b557a AK |
1236 | { |
1237 | /* We may need a .plt entry if the function this reloc | |
1238 | refers to is in a shared lib. */ | |
1239 | h->plt.refcount += 1; | |
1240 | } | |
0451c93c | 1241 | } |
a85d7ed0 NC |
1242 | |
1243 | /* If we are creating a shared library, and this is a reloc | |
0451c93c MS |
1244 | against a global symbol, or a non PC relative reloc |
1245 | against a local symbol, then we need to copy the reloc | |
1246 | into the shared library. However, if we are linking with | |
1247 | -Bsymbolic, we do not need to copy a reloc against a | |
1248 | global symbol which is defined in an object we are | |
1249 | including in the link (i.e., DEF_REGULAR is set). At | |
1250 | this point we have not seen all the input files, so it is | |
1251 | possible that DEF_REGULAR is not set now but will be set | |
1252 | later (it is never cleared). In case of a weak definition, | |
1253 | DEF_REGULAR may be cleared later by a strong definition in | |
1254 | a shared library. We account for that possibility below by | |
1255 | storing information in the relocs_copied field of the hash | |
1256 | table entry. A similar situation occurs when creating | |
1257 | shared libraries and symbol visibility changes render the | |
1258 | symbol local. | |
1259 | ||
1260 | If on the other hand, we are creating an executable, we | |
1261 | may need to keep relocations for symbols satisfied by a | |
1262 | dynamic library if we manage to avoid copy relocs for the | |
1263 | symbol. */ | |
0e1862bb | 1264 | if ((bfd_link_pic (info) |
0451c93c | 1265 | && (sec->flags & SEC_ALLOC) != 0 |
ec338859 | 1266 | && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16 |
fb798c50 | 1267 | && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL |
0451c93c | 1268 | && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL |
fb798c50 | 1269 | && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL |
befc3abb | 1270 | && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL |
0451c93c MS |
1271 | && ELF32_R_TYPE (rel->r_info) != R_390_PC32) |
1272 | || (h != NULL | |
8c21ca21 | 1273 | && (! SYMBOLIC_BIND (info, h) |
0451c93c | 1274 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1275 | || !h->def_regular)))) |
64285810 | 1276 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 1277 | && !bfd_link_pic (info) |
0451c93c MS |
1278 | && (sec->flags & SEC_ALLOC) != 0 |
1279 | && h != NULL | |
1280 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 1281 | || !h->def_regular))) |
a85d7ed0 | 1282 | { |
00d8c7a9 AK |
1283 | struct elf_dyn_relocs *p; |
1284 | struct elf_dyn_relocs **head; | |
ec338859 | 1285 | |
0451c93c MS |
1286 | /* We must copy these reloc types into the output file. |
1287 | Create a reloc section in dynobj and make room for | |
1288 | this reloc. */ | |
a85d7ed0 NC |
1289 | if (sreloc == NULL) |
1290 | { | |
0451c93c MS |
1291 | if (htab->elf.dynobj == NULL) |
1292 | htab->elf.dynobj = abfd; | |
a85d7ed0 | 1293 | |
83bac4b0 NC |
1294 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1295 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE); | |
1296 | ||
a85d7ed0 | 1297 | if (sreloc == NULL) |
83bac4b0 | 1298 | return FALSE; |
a85d7ed0 NC |
1299 | } |
1300 | ||
0451c93c MS |
1301 | /* If this is a global symbol, we count the number of |
1302 | relocations we need for this symbol. */ | |
1303 | if (h != NULL) | |
a85d7ed0 | 1304 | { |
190eb1dd | 1305 | head = &h->dyn_relocs; |
0451c93c MS |
1306 | } |
1307 | else | |
1308 | { | |
ec338859 AM |
1309 | /* Track dynamic relocs needed for local syms too. |
1310 | We really need local syms available to do this | |
1311 | easily. Oh well. */ | |
ec338859 | 1312 | asection *s; |
6edfbbad | 1313 | void *vpp; |
ae9a127f | 1314 | |
87d72d41 AM |
1315 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1316 | abfd, r_symndx); | |
1317 | if (isym == NULL) | |
b34976b6 | 1318 | return FALSE; |
ec338859 | 1319 | |
87d72d41 AM |
1320 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
1321 | if (s == NULL) | |
1322 | s = sec; | |
1323 | ||
6edfbbad | 1324 | vpp = &elf_section_data (s)->local_dynrel; |
00d8c7a9 | 1325 | head = (struct elf_dyn_relocs **) vpp; |
ec338859 AM |
1326 | } |
1327 | ||
1328 | p = *head; | |
1329 | if (p == NULL || p->sec != sec) | |
1330 | { | |
986f0783 | 1331 | size_t amt = sizeof *p; |
ae9a127f | 1332 | |
00d8c7a9 | 1333 | p = ((struct elf_dyn_relocs *) |
ec338859 AM |
1334 | bfd_alloc (htab->elf.dynobj, amt)); |
1335 | if (p == NULL) | |
b34976b6 | 1336 | return FALSE; |
ec338859 AM |
1337 | p->next = *head; |
1338 | *head = p; | |
1339 | p->sec = sec; | |
1340 | p->count = 0; | |
1341 | p->pc_count = 0; | |
a85d7ed0 | 1342 | } |
ec338859 AM |
1343 | |
1344 | p->count += 1; | |
1345 | if (ELF32_R_TYPE (rel->r_info) == R_390_PC16 | |
fb798c50 | 1346 | || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL |
ec338859 | 1347 | || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL |
fb798c50 | 1348 | || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL |
befc3abb | 1349 | || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL |
ec338859 AM |
1350 | || ELF32_R_TYPE (rel->r_info) == R_390_PC32) |
1351 | p->pc_count += 1; | |
a85d7ed0 | 1352 | } |
a85d7ed0 | 1353 | break; |
ec338859 | 1354 | |
a85d7ed0 NC |
1355 | /* This relocation describes the C++ object vtable hierarchy. |
1356 | Reconstruct it for later use during GC. */ | |
26e41594 | 1357 | case R_390_GNU_VTINHERIT: |
c152c796 | 1358 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
26e41594 AM |
1359 | return FALSE; |
1360 | break; | |
ec338859 | 1361 | |
a85d7ed0 NC |
1362 | /* This relocation describes which C++ vtable entries are actually |
1363 | used. Record for later use during GC. */ | |
26e41594 | 1364 | case R_390_GNU_VTENTRY: |
a0ea3a14 | 1365 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
26e41594 AM |
1366 | return FALSE; |
1367 | break; | |
ec338859 | 1368 | |
a85d7ed0 NC |
1369 | default: |
1370 | break; | |
1371 | } | |
1372 | } | |
1373 | ||
b34976b6 | 1374 | return TRUE; |
a85d7ed0 NC |
1375 | } |
1376 | ||
1377 | /* Return the section that should be marked against GC for a given | |
1378 | relocation. */ | |
1379 | ||
1380 | static asection * | |
07adf181 AM |
1381 | elf_s390_gc_mark_hook (asection *sec, |
1382 | struct bfd_link_info *info, | |
1383 | Elf_Internal_Rela *rel, | |
1384 | struct elf_link_hash_entry *h, | |
1385 | Elf_Internal_Sym *sym) | |
a85d7ed0 NC |
1386 | { |
1387 | if (h != NULL) | |
07adf181 AM |
1388 | switch (ELF32_R_TYPE (rel->r_info)) |
1389 | { | |
1390 | case R_390_GNU_VTINHERIT: | |
1391 | case R_390_GNU_VTENTRY: | |
1392 | return NULL; | |
1393 | } | |
1394 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
a85d7ed0 | 1395 | |
a85d7ed0 NC |
1396 | } |
1397 | ||
5236c819 MS |
1398 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
1399 | entry but we found we will not create any. Called when we find we will | |
1400 | not have any PLT for this symbol, by for example | |
1401 | elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
1402 | or elf_s390_size_dynamic_sections if no dynamic sections will be | |
1403 | created (we're only linking static objects). */ | |
1404 | ||
1405 | static void | |
2c3fc389 | 1406 | elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h) |
5236c819 MS |
1407 | { |
1408 | if (h->elf.root.type == bfd_link_hash_warning) | |
1409 | h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link; | |
1410 | ||
1411 | if (h->gotplt_refcount <= 0) | |
1412 | return; | |
1413 | ||
1414 | /* We simply add the number of gotplt references to the number | |
1415 | * of got references for this symbol. */ | |
1416 | h->elf.got.refcount += h->gotplt_refcount; | |
1417 | h->gotplt_refcount = -1; | |
1418 | } | |
1419 | ||
a85d7ed0 NC |
1420 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1421 | regular object. The current definition is in some section of the | |
1422 | dynamic object, but we're not including those sections. We have to | |
1423 | change the definition to something the rest of the link can | |
1424 | understand. */ | |
1425 | ||
b34976b6 | 1426 | static bfd_boolean |
2c3fc389 NC |
1427 | elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info, |
1428 | struct elf_link_hash_entry *h) | |
a85d7ed0 | 1429 | { |
0451c93c | 1430 | struct elf_s390_link_hash_table *htab; |
5474d94f | 1431 | asection *s, *srel; |
a85d7ed0 | 1432 | |
470b557a AK |
1433 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1434 | if (s390_is_ifunc_symbol_p (h)) | |
d8ee9e44 AK |
1435 | { |
1436 | /* All local STT_GNU_IFUNC references must be treated as local | |
1437 | calls via local PLT. */ | |
1438 | if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h)) | |
1439 | { | |
1440 | bfd_size_type pc_count = 0, count = 0; | |
1441 | struct elf_dyn_relocs **pp; | |
d8ee9e44 AK |
1442 | struct elf_dyn_relocs *p; |
1443 | ||
190eb1dd | 1444 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
d8ee9e44 AK |
1445 | { |
1446 | pc_count += p->pc_count; | |
1447 | p->count -= p->pc_count; | |
1448 | p->pc_count = 0; | |
1449 | count += p->count; | |
1450 | if (p->count == 0) | |
1451 | *pp = p->next; | |
1452 | else | |
1453 | pp = &p->next; | |
1454 | } | |
1455 | ||
1456 | if (pc_count || count) | |
1457 | { | |
1458 | h->needs_plt = 1; | |
1459 | h->non_got_ref = 1; | |
1460 | if (h->plt.refcount <= 0) | |
1461 | h->plt.refcount = 1; | |
1462 | else | |
1463 | h->plt.refcount += 1; | |
1464 | } | |
1465 | } | |
1466 | ||
1467 | if (h->plt.refcount <= 0) | |
1468 | { | |
1469 | h->plt.offset = (bfd_vma) -1; | |
1470 | h->needs_plt = 0; | |
1471 | } | |
1472 | return TRUE; | |
1473 | } | |
470b557a | 1474 | |
a85d7ed0 NC |
1475 | /* If this is a function, put it in the procedure linkage table. We |
1476 | will fill in the contents of the procedure linkage table later | |
cedb70c5 | 1477 | (although we could actually do it here). */ |
a85d7ed0 | 1478 | if (h->type == STT_FUNC |
f5385ebf | 1479 | || h->needs_plt) |
a85d7ed0 | 1480 | { |
0451c93c | 1481 | if (h->plt.refcount <= 0 |
8c21ca21 AK |
1482 | || SYMBOL_CALLS_LOCAL (info, h) |
1483 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1484 | && h->root.type != bfd_link_hash_undefweak)) | |
a85d7ed0 NC |
1485 | { |
1486 | /* This case can occur if we saw a PLT32 reloc in an input | |
26e41594 AM |
1487 | file, but the symbol was never referred to by a dynamic |
1488 | object, or if all references were garbage collected. In | |
a85d7ed0 NC |
1489 | such a case, we don't actually need to build a procedure |
1490 | linkage table, and we can just do a PC32 reloc instead. */ | |
1491 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1492 | h->needs_plt = 0; |
5236c819 | 1493 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
a85d7ed0 NC |
1494 | } |
1495 | ||
b34976b6 | 1496 | return TRUE; |
a85d7ed0 | 1497 | } |
bbd7ec4a | 1498 | else |
0451c93c MS |
1499 | /* It's possible that we incorrectly decided a .plt reloc was |
1500 | needed for an R_390_PC32 reloc to a non-function sym in | |
1501 | check_relocs. We can't decide accurately between function and | |
1502 | non-function syms in check-relocs; Objects loaded later in | |
1503 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1504 | h->plt.offset = (bfd_vma) -1; |
a85d7ed0 NC |
1505 | |
1506 | /* If this is a weak symbol, and there is a real definition, the | |
1507 | processor independent code will have arranged for us to see the | |
1508 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 1509 | if (h->is_weakalias) |
a85d7ed0 | 1510 | { |
60d67dc8 AM |
1511 | struct elf_link_hash_entry *def = weakdef (h); |
1512 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
1513 | h->root.u.def.section = def->root.u.def.section; | |
1514 | h->root.u.def.value = def->root.u.def.value; | |
64285810 | 1515 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
60d67dc8 | 1516 | h->non_got_ref = def->non_got_ref; |
b34976b6 | 1517 | return TRUE; |
a85d7ed0 NC |
1518 | } |
1519 | ||
1520 | /* This is a reference to a symbol defined by a dynamic object which | |
1521 | is not a function. */ | |
1522 | ||
1523 | /* If we are creating a shared library, we must presume that the | |
1524 | only references to the symbol are via the global offset table. | |
1525 | For such cases we need not do anything here; the relocations will | |
1526 | be handled correctly by relocate_section. */ | |
0e1862bb | 1527 | if (bfd_link_pic (info)) |
b34976b6 | 1528 | return TRUE; |
a85d7ed0 NC |
1529 | |
1530 | /* If there are no references to this symbol that do not use the | |
1531 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 1532 | if (!h->non_got_ref) |
b34976b6 | 1533 | return TRUE; |
a85d7ed0 | 1534 | |
0451c93c MS |
1535 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1536 | if (info->nocopyreloc) | |
1537 | { | |
f5385ebf | 1538 | h->non_got_ref = 0; |
b34976b6 | 1539 | return TRUE; |
0451c93c MS |
1540 | } |
1541 | ||
3bf083ed AM |
1542 | /* If we don't find any dynamic relocs in read-only sections, then |
1543 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
5dbc8b37 | 1544 | if (ELIMINATE_COPY_RELOCS && !_bfd_elf_readonly_dynrelocs (h)) |
0451c93c | 1545 | { |
3bf083ed AM |
1546 | h->non_got_ref = 0; |
1547 | return TRUE; | |
0451c93c MS |
1548 | } |
1549 | ||
a85d7ed0 NC |
1550 | /* We must allocate the symbol in our .dynbss section, which will |
1551 | become part of the .bss section of the executable. There will be | |
1552 | an entry for this symbol in the .dynsym section. The dynamic | |
1553 | object will contain position independent code, so all references | |
1554 | from the dynamic object to this symbol will go through the global | |
1555 | offset table. The dynamic linker will use the .dynsym entry to | |
1556 | determine the address it must put in the global offset table, so | |
1557 | both the dynamic object and the regular object will refer to the | |
1558 | same memory location for the variable. */ | |
1559 | ||
0451c93c | 1560 | htab = elf_s390_hash_table (info); |
a85d7ed0 | 1561 | |
0451c93c MS |
1562 | /* We must generate a R_390_COPY reloc to tell the dynamic linker to |
1563 | copy the initial value out of the dynamic object and into the | |
1564 | runtime process image. */ | |
5474d94f AM |
1565 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
1566 | { | |
1567 | s = htab->elf.sdynrelro; | |
1568 | srel = htab->elf.sreldynrelro; | |
1569 | } | |
1570 | else | |
1571 | { | |
1572 | s = htab->elf.sdynbss; | |
1573 | srel = htab->elf.srelbss; | |
1574 | } | |
1d7e9d18 | 1575 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
a85d7ed0 | 1576 | { |
5474d94f | 1577 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1578 | h->needs_copy = 1; |
a85d7ed0 NC |
1579 | } |
1580 | ||
6cabe1ea | 1581 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a85d7ed0 NC |
1582 | } |
1583 | ||
0451c93c MS |
1584 | /* Allocate space in .plt, .got and associated reloc sections for |
1585 | dynamic relocs. */ | |
1586 | ||
b34976b6 | 1587 | static bfd_boolean |
2c3fc389 | 1588 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
0451c93c MS |
1589 | { |
1590 | struct bfd_link_info *info; | |
1591 | struct elf_s390_link_hash_table *htab; | |
00d8c7a9 | 1592 | struct elf_dyn_relocs *p; |
0451c93c | 1593 | |
e92d460e | 1594 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1595 | return TRUE; |
0451c93c MS |
1596 | |
1597 | info = (struct bfd_link_info *) inf; | |
1598 | htab = elf_s390_hash_table (info); | |
1599 | ||
470b557a AK |
1600 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
1601 | here if it is defined and referenced in a non-shared object. */ | |
1602 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
61643fba | 1603 | return s390_elf_allocate_ifunc_dyn_relocs (info, h); |
470b557a AK |
1604 | else if (htab->elf.dynamic_sections_created |
1605 | && h->plt.refcount > 0) | |
0451c93c MS |
1606 | { |
1607 | /* Make sure this symbol is output as a dynamic symbol. | |
1608 | Undefined weak syms won't yet be marked as dynamic. */ | |
1609 | if (h->dynindx == -1 | |
f5385ebf | 1610 | && !h->forced_local) |
0451c93c | 1611 | { |
c152c796 | 1612 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1613 | return FALSE; |
0451c93c MS |
1614 | } |
1615 | ||
0e1862bb | 1616 | if (bfd_link_pic (info) |
4ec72bde | 1617 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
0451c93c | 1618 | { |
f41345a7 | 1619 | asection *s = htab->elf.splt; |
0451c93c MS |
1620 | |
1621 | /* If this is the first .plt entry, make room for the special | |
1622 | first entry. */ | |
eea6121a AM |
1623 | if (s->size == 0) |
1624 | s->size += PLT_FIRST_ENTRY_SIZE; | |
0451c93c | 1625 | |
eea6121a | 1626 | h->plt.offset = s->size; |
0451c93c MS |
1627 | |
1628 | /* If this symbol is not defined in a regular file, and we are | |
1629 | not generating a shared library, then set the symbol to this | |
1630 | location in the .plt. This is required to make function | |
1631 | pointers compare as equal between the normal executable and | |
1632 | the shared library. */ | |
0e1862bb | 1633 | if (! bfd_link_pic (info) |
f5385ebf | 1634 | && !h->def_regular) |
0451c93c MS |
1635 | { |
1636 | h->root.u.def.section = s; | |
1637 | h->root.u.def.value = h->plt.offset; | |
1638 | } | |
ec338859 | 1639 | |
0451c93c | 1640 | /* Make room for this entry. */ |
eea6121a | 1641 | s->size += PLT_ENTRY_SIZE; |
ec338859 | 1642 | |
24801b15 AK |
1643 | /* We also need to make an entry in the .got.plt section, which |
1644 | will be placed in the .got section by the linker script. */ | |
f41345a7 | 1645 | htab->elf.sgotplt->size += GOT_ENTRY_SIZE; |
0451c93c MS |
1646 | |
1647 | /* We also need to make an entry in the .rela.plt section. */ | |
f41345a7 | 1648 | htab->elf.srelplt->size += sizeof (Elf32_External_Rela); |
0451c93c MS |
1649 | } |
1650 | else | |
1651 | { | |
07d6d2b8 | 1652 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1653 | h->needs_plt = 0; |
5236c819 | 1654 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c | 1655 | } |
ec338859 | 1656 | } |
0451c93c MS |
1657 | else |
1658 | { | |
1659 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1660 | h->needs_plt = 0; |
5236c819 | 1661 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
ec338859 AM |
1662 | } |
1663 | ||
69fc87f1 MS |
1664 | /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to |
1665 | the binary, we can optimize a bit. IE32 and GOTIE32 get converted | |
1666 | to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT | |
1667 | we can save the dynamic TLS relocation. */ | |
1668 | if (h->got.refcount > 0 | |
0e1862bb | 1669 | && !bfd_link_pic (info) |
69fc87f1 MS |
1670 | && h->dynindx == -1 |
1671 | && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE) | |
0451c93c | 1672 | { |
69fc87f1 MS |
1673 | if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT) |
1674 | /* For the GOTIE access without a literal pool entry the offset has | |
1675 | to be stored somewhere. The immediate value in the instruction | |
1676 | is not bit enough so the value is stored in the got. */ | |
1677 | { | |
f41345a7 AK |
1678 | h->got.offset = htab->elf.sgot->size; |
1679 | htab->elf.sgot->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1680 | } |
1681 | else | |
1682 | h->got.offset = (bfd_vma) -1; | |
1683 | } | |
1684 | else if (h->got.refcount > 0) | |
ceada896 | 1685 | { |
0451c93c | 1686 | asection *s; |
b34976b6 | 1687 | bfd_boolean dyn; |
69fc87f1 | 1688 | int tls_type = elf_s390_hash_entry(h)->tls_type; |
0451c93c MS |
1689 | |
1690 | /* Make sure this symbol is output as a dynamic symbol. | |
1691 | Undefined weak syms won't yet be marked as dynamic. */ | |
1692 | if (h->dynindx == -1 | |
f5385ebf | 1693 | && !h->forced_local) |
0451c93c | 1694 | { |
c152c796 | 1695 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1696 | return FALSE; |
0451c93c MS |
1697 | } |
1698 | ||
f41345a7 | 1699 | s = htab->elf.sgot; |
eea6121a AM |
1700 | h->got.offset = s->size; |
1701 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1702 | /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */ |
1703 | if (tls_type == GOT_TLS_GD) | |
eea6121a | 1704 | s->size += GOT_ENTRY_SIZE; |
0451c93c | 1705 | dyn = htab->elf.dynamic_sections_created; |
69fc87f1 MS |
1706 | /* R_390_TLS_IE32 needs one dynamic relocation, |
1707 | R_390_TLS_GD32 needs one if local symbol and two if global. */ | |
1708 | if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1709 | || tls_type >= GOT_TLS_IE) | |
f41345a7 | 1710 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
69fc87f1 | 1711 | else if (tls_type == GOT_TLS_GD) |
f41345a7 | 1712 | htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela); |
82058a73 MS |
1713 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1714 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 1715 | && (bfd_link_pic (info) |
82058a73 | 1716 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
f41345a7 | 1717 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
0451c93c MS |
1718 | } |
1719 | else | |
1720 | h->got.offset = (bfd_vma) -1; | |
1721 | ||
190eb1dd | 1722 | if (h->dyn_relocs == NULL) |
b34976b6 | 1723 | return TRUE; |
0451c93c MS |
1724 | |
1725 | /* In the shared -Bsymbolic case, discard space allocated for | |
1726 | dynamic pc-relative relocs against symbols which turn out to be | |
1727 | defined in regular objects. For the normal shared case, discard | |
1728 | space for pc-relative relocs that have become local due to symbol | |
1729 | visibility changes. */ | |
1730 | ||
0e1862bb | 1731 | if (bfd_link_pic (info)) |
0451c93c | 1732 | { |
8c21ca21 | 1733 | if (SYMBOL_CALLS_LOCAL (info, h)) |
0451c93c | 1734 | { |
00d8c7a9 | 1735 | struct elf_dyn_relocs **pp; |
0451c93c | 1736 | |
190eb1dd | 1737 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
0451c93c MS |
1738 | { |
1739 | p->count -= p->pc_count; | |
1740 | p->pc_count = 0; | |
1741 | if (p->count == 0) | |
1742 | *pp = p->next; | |
1743 | else | |
1744 | pp = &p->next; | |
1745 | } | |
1746 | } | |
82058a73 MS |
1747 | |
1748 | /* Also discard relocs on undefined weak syms with non-default | |
1749 | visibility. */ | |
190eb1dd | 1750 | if (h->dyn_relocs != NULL |
82058a73 | 1751 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 | 1752 | { |
b27bb18f L |
1753 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
1754 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
190eb1dd | 1755 | h->dyn_relocs = NULL; |
22d606e9 AM |
1756 | |
1757 | /* Make sure undefined weak symbols are output as a dynamic | |
1758 | symbol in PIEs. */ | |
1759 | else if (h->dynindx == -1 | |
1760 | && !h->forced_local) | |
1761 | { | |
1762 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1763 | return FALSE; | |
1764 | } | |
1765 | } | |
0451c93c | 1766 | } |
64285810 | 1767 | else if (ELIMINATE_COPY_RELOCS) |
0451c93c MS |
1768 | { |
1769 | /* For the non-shared case, discard space for relocs against | |
1770 | symbols which turn out to need copy relocs or are not | |
1771 | dynamic. */ | |
1772 | ||
f5385ebf AM |
1773 | if (!h->non_got_ref |
1774 | && ((h->def_dynamic | |
1775 | && !h->def_regular) | |
0451c93c MS |
1776 | || (htab->elf.dynamic_sections_created |
1777 | && (h->root.type == bfd_link_hash_undefweak | |
1778 | || h->root.type == bfd_link_hash_undefined)))) | |
1779 | { | |
1780 | /* Make sure this symbol is output as a dynamic symbol. | |
1781 | Undefined weak syms won't yet be marked as dynamic. */ | |
1782 | if (h->dynindx == -1 | |
f5385ebf | 1783 | && !h->forced_local) |
0451c93c | 1784 | { |
c152c796 | 1785 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1786 | return FALSE; |
0451c93c MS |
1787 | } |
1788 | ||
1789 | /* If that succeeded, we know we'll be keeping all the | |
1790 | relocs. */ | |
1791 | if (h->dynindx != -1) | |
1792 | goto keep; | |
1793 | } | |
1794 | ||
190eb1dd | 1795 | h->dyn_relocs = NULL; |
0451c93c | 1796 | |
ec338859 | 1797 | keep: ; |
0451c93c MS |
1798 | } |
1799 | ||
1800 | /* Finally, allocate space. */ | |
190eb1dd | 1801 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
0451c93c MS |
1802 | { |
1803 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
ae9a127f | 1804 | |
eea6121a | 1805 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
0451c93c MS |
1806 | } |
1807 | ||
b34976b6 | 1808 | return TRUE; |
0451c93c MS |
1809 | } |
1810 | ||
63c1f59d AM |
1811 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
1812 | read-only sections. */ | |
0451c93c | 1813 | |
b34976b6 | 1814 | static bfd_boolean |
63c1f59d | 1815 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
0451c93c | 1816 | { |
63c1f59d | 1817 | asection *sec; |
0451c93c | 1818 | |
63c1f59d AM |
1819 | if (h->root.type == bfd_link_hash_indirect) |
1820 | return TRUE; | |
0451c93c | 1821 | |
5dbc8b37 | 1822 | sec = _bfd_elf_readonly_dynrelocs (h); |
63c1f59d AM |
1823 | if (sec != NULL) |
1824 | { | |
1825 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; | |
0451c93c | 1826 | |
63c1f59d AM |
1827 | info->flags |= DF_TEXTREL; |
1828 | info->callbacks->minfo | |
c1c8c1ef | 1829 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 1830 | sec->owner, h->root.root.string, sec); |
0451c93c | 1831 | |
63c1f59d AM |
1832 | /* Not an error, just cut short the traversal. */ |
1833 | return FALSE; | |
0451c93c | 1834 | } |
b34976b6 | 1835 | return TRUE; |
0451c93c MS |
1836 | } |
1837 | ||
a85d7ed0 NC |
1838 | /* Set the sizes of the dynamic sections. */ |
1839 | ||
b34976b6 | 1840 | static bfd_boolean |
2c3fc389 NC |
1841 | elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
1842 | struct bfd_link_info *info) | |
a85d7ed0 | 1843 | { |
0451c93c | 1844 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
1845 | bfd *dynobj; |
1846 | asection *s; | |
b34976b6 | 1847 | bfd_boolean relocs; |
0451c93c | 1848 | bfd *ibfd; |
a85d7ed0 | 1849 | |
0451c93c MS |
1850 | htab = elf_s390_hash_table (info); |
1851 | dynobj = htab->elf.dynobj; | |
1852 | if (dynobj == NULL) | |
1853 | abort (); | |
a85d7ed0 | 1854 | |
0451c93c | 1855 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
1856 | { |
1857 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 1858 | if (bfd_link_executable (info) && !info->nointerp) |
a85d7ed0 | 1859 | { |
3d4d4302 | 1860 | s = bfd_get_linker_section (dynobj, ".interp"); |
0451c93c MS |
1861 | if (s == NULL) |
1862 | abort (); | |
eea6121a | 1863 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
a85d7ed0 NC |
1864 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1865 | } | |
1866 | } | |
a85d7ed0 | 1867 | |
0451c93c MS |
1868 | /* Set up .got offsets for local syms, and space for local dynamic |
1869 | relocs. */ | |
c72f2fb2 | 1870 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a85d7ed0 | 1871 | { |
0451c93c MS |
1872 | bfd_signed_vma *local_got; |
1873 | bfd_signed_vma *end_local_got; | |
69fc87f1 | 1874 | char *local_tls_type; |
0451c93c MS |
1875 | bfd_size_type locsymcount; |
1876 | Elf_Internal_Shdr *symtab_hdr; | |
1877 | asection *srela; | |
470b557a AK |
1878 | struct plt_entry *local_plt; |
1879 | unsigned int i; | |
a85d7ed0 | 1880 | |
0ffa91dd | 1881 | if (! is_s390_elf (ibfd)) |
a85d7ed0 NC |
1882 | continue; |
1883 | ||
0451c93c | 1884 | for (s = ibfd->sections; s != NULL; s = s->next) |
a85d7ed0 | 1885 | { |
00d8c7a9 | 1886 | struct elf_dyn_relocs *p; |
0451c93c | 1887 | |
6edfbbad | 1888 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
a85d7ed0 | 1889 | { |
ec338859 AM |
1890 | if (!bfd_is_abs_section (p->sec) |
1891 | && bfd_is_abs_section (p->sec->output_section)) | |
1892 | { | |
1893 | /* Input section has been discarded, either because | |
1894 | it is a copy of a linkonce section or due to | |
1895 | linker script /DISCARD/, so we'll be discarding | |
1896 | the relocs too. */ | |
1897 | } | |
248866a8 | 1898 | else if (p->count != 0) |
ec338859 AM |
1899 | { |
1900 | srela = elf_section_data (p->sec)->sreloc; | |
eea6121a | 1901 | srela->size += p->count * sizeof (Elf32_External_Rela); |
248866a8 AM |
1902 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
1903 | info->flags |= DF_TEXTREL; | |
ec338859 | 1904 | } |
a85d7ed0 NC |
1905 | } |
1906 | } | |
0451c93c MS |
1907 | |
1908 | local_got = elf_local_got_refcounts (ibfd); | |
1909 | if (!local_got) | |
1910 | continue; | |
1911 | ||
0ffa91dd | 1912 | symtab_hdr = &elf_symtab_hdr (ibfd); |
0451c93c MS |
1913 | locsymcount = symtab_hdr->sh_info; |
1914 | end_local_got = local_got + locsymcount; | |
69fc87f1 | 1915 | local_tls_type = elf_s390_local_got_tls_type (ibfd); |
f41345a7 AK |
1916 | s = htab->elf.sgot; |
1917 | srela = htab->elf.srelgot; | |
69fc87f1 | 1918 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
a85d7ed0 | 1919 | { |
0451c93c | 1920 | if (*local_got > 0) |
a85d7ed0 | 1921 | { |
eea6121a AM |
1922 | *local_got = s->size; |
1923 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 | 1924 | if (*local_tls_type == GOT_TLS_GD) |
eea6121a | 1925 | s->size += GOT_ENTRY_SIZE; |
0e1862bb | 1926 | if (bfd_link_pic (info)) |
eea6121a | 1927 | srela->size += sizeof (Elf32_External_Rela); |
a85d7ed0 NC |
1928 | } |
1929 | else | |
0451c93c MS |
1930 | *local_got = (bfd_vma) -1; |
1931 | } | |
470b557a AK |
1932 | local_plt = elf_s390_local_plt (ibfd); |
1933 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
1934 | { | |
1935 | if (local_plt[i].plt.refcount > 0) | |
1936 | { | |
1937 | local_plt[i].plt.offset = htab->elf.iplt->size; | |
1938 | htab->elf.iplt->size += PLT_ENTRY_SIZE; | |
1939 | htab->elf.igotplt->size += GOT_ENTRY_SIZE; | |
1940 | htab->elf.irelplt->size += RELA_ENTRY_SIZE; | |
1941 | } | |
1942 | else | |
07d6d2b8 | 1943 | local_plt[i].plt.offset = (bfd_vma) -1; |
470b557a | 1944 | } |
0451c93c MS |
1945 | } |
1946 | ||
69fc87f1 MS |
1947 | if (htab->tls_ldm_got.refcount > 0) |
1948 | { | |
1949 | /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32 | |
1950 | relocs. */ | |
f41345a7 AK |
1951 | htab->tls_ldm_got.offset = htab->elf.sgot->size; |
1952 | htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE; | |
1953 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); | |
69fc87f1 MS |
1954 | } |
1955 | else | |
1956 | htab->tls_ldm_got.offset = -1; | |
1957 | ||
0451c93c MS |
1958 | /* Allocate global sym .plt and .got entries, and space for global |
1959 | sym dynamic relocs. */ | |
2c3fc389 | 1960 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
0451c93c MS |
1961 | |
1962 | /* We now have determined the sizes of the various dynamic sections. | |
1963 | Allocate memory for them. */ | |
b34976b6 | 1964 | relocs = FALSE; |
0451c93c MS |
1965 | for (s = dynobj->sections; s != NULL; s = s->next) |
1966 | { | |
1967 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1968 | continue; | |
1969 | ||
f41345a7 AK |
1970 | if (s == htab->elf.splt |
1971 | || s == htab->elf.sgot | |
1972 | || s == htab->elf.sgotplt | |
9d19e4fd | 1973 | || s == htab->elf.sdynbss |
5474d94f | 1974 | || s == htab->elf.sdynrelro |
470b557a AK |
1975 | || s == htab->elf.iplt |
1976 | || s == htab->elf.igotplt | |
1977 | || s == htab->irelifunc) | |
0451c93c MS |
1978 | { |
1979 | /* Strip this section if we don't need it; see the | |
1980 | comment below. */ | |
a85d7ed0 | 1981 | } |
fd361982 | 1982 | else if (CONST_STRNEQ (bfd_section_name (s), ".rela")) |
0451c93c | 1983 | { |
eea6121a | 1984 | if (s->size != 0) |
b34976b6 | 1985 | relocs = TRUE; |
ec338859 | 1986 | |
0451c93c MS |
1987 | /* We use the reloc_count field as a counter if we need |
1988 | to copy relocs into the output file. */ | |
1989 | s->reloc_count = 0; | |
1990 | } | |
1991 | else | |
a85d7ed0 NC |
1992 | { |
1993 | /* It's not one of our sections, so don't allocate space. */ | |
1994 | continue; | |
1995 | } | |
1996 | ||
eea6121a | 1997 | if (s->size == 0) |
a85d7ed0 | 1998 | { |
0451c93c MS |
1999 | /* If we don't need this section, strip it from the |
2000 | output file. This is to handle .rela.bss and | |
2001 | .rela.plt. We must create it in | |
2002 | create_dynamic_sections, because it must be created | |
2003 | before the linker maps input sections to output | |
2004 | sections. The linker does that before | |
2005 | adjust_dynamic_symbol is called, and it is that | |
2006 | function which decides whether anything needs to go | |
2007 | into these sections. */ | |
2008 | ||
8423293d | 2009 | s->flags |= SEC_EXCLUDE; |
a85d7ed0 NC |
2010 | continue; |
2011 | } | |
2012 | ||
c456f082 AM |
2013 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2014 | continue; | |
2015 | ||
0451c93c MS |
2016 | /* Allocate memory for the section contents. We use bfd_zalloc |
2017 | here in case unused entries are not reclaimed before the | |
2018 | section's contents are written out. This should not happen, | |
2019 | but this way if it does, we get a R_390_NONE reloc instead | |
2020 | of garbage. */ | |
eea6121a | 2021 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
0451c93c | 2022 | if (s->contents == NULL) |
b34976b6 | 2023 | return FALSE; |
a85d7ed0 | 2024 | } |
ec338859 | 2025 | |
0451c93c | 2026 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
2027 | { |
2028 | /* Add some entries to the .dynamic section. We fill in the | |
2029 | values later, in elf_s390_finish_dynamic_sections, but we | |
2030 | must add the entries now so that we get the correct size for | |
2031 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2032 | dynamic linker and used by the debugger. */ | |
dc810e39 | 2033 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2034 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
ec338859 | 2035 | |
0e1862bb | 2036 | if (bfd_link_executable (info)) |
a85d7ed0 | 2037 | { |
dc810e39 | 2038 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2039 | return FALSE; |
a85d7ed0 | 2040 | } |
ec338859 | 2041 | |
f41345a7 | 2042 | if (htab->elf.splt->size != 0) |
a85d7ed0 | 2043 | { |
dc810e39 AM |
2044 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2045 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2046 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2047 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2048 | return FALSE; |
a85d7ed0 | 2049 | } |
ec338859 | 2050 | |
a85d7ed0 | 2051 | if (relocs) |
26e41594 AM |
2052 | { |
2053 | if (!add_dynamic_entry (DT_RELA, 0) | |
2054 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2055 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 2056 | return FALSE; |
a85d7ed0 | 2057 | |
0451c93c MS |
2058 | /* If any dynamic relocs apply to a read-only section, |
2059 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 2060 | if ((info->flags & DF_TEXTREL) == 0) |
63c1f59d | 2061 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
ec338859 | 2062 | |
0451c93c MS |
2063 | if ((info->flags & DF_TEXTREL) != 0) |
2064 | { | |
2065 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2066 | return FALSE; |
0451c93c | 2067 | } |
a85d7ed0 NC |
2068 | } |
2069 | } | |
dc810e39 | 2070 | #undef add_dynamic_entry |
ec338859 | 2071 | |
b34976b6 | 2072 | return TRUE; |
a85d7ed0 NC |
2073 | } |
2074 | ||
69fc87f1 MS |
2075 | /* Return the base VMA address which should be subtracted from real addresses |
2076 | when resolving @dtpoff relocation. | |
2077 | This is PT_TLS segment p_vaddr. */ | |
2078 | ||
2079 | static bfd_vma | |
2c3fc389 | 2080 | dtpoff_base (struct bfd_link_info *info) |
69fc87f1 | 2081 | { |
e1918d23 AM |
2082 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2083 | if (elf_hash_table (info)->tls_sec == NULL) | |
69fc87f1 | 2084 | return 0; |
e1918d23 | 2085 | return elf_hash_table (info)->tls_sec->vma; |
69fc87f1 MS |
2086 | } |
2087 | ||
2088 | /* Return the relocation value for @tpoff relocation | |
2089 | if STT_TLS virtual address is ADDRESS. */ | |
2090 | ||
2091 | static bfd_vma | |
2c3fc389 | 2092 | tpoff (struct bfd_link_info *info, bfd_vma address) |
69fc87f1 | 2093 | { |
e1918d23 | 2094 | struct elf_link_hash_table *htab = elf_hash_table (info); |
69fc87f1 | 2095 | |
e1918d23 AM |
2096 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2097 | if (htab->tls_sec == NULL) | |
69fc87f1 | 2098 | return 0; |
e1918d23 | 2099 | return htab->tls_size + htab->tls_sec->vma - address; |
69fc87f1 MS |
2100 | } |
2101 | ||
2102 | /* Complain if TLS instruction relocation is against an invalid | |
2103 | instruction. */ | |
2104 | ||
2105 | static void | |
2c3fc389 NC |
2106 | invalid_tls_insn (bfd *input_bfd, |
2107 | asection *input_section, | |
2108 | Elf_Internal_Rela *rel) | |
69fc87f1 MS |
2109 | { |
2110 | reloc_howto_type *howto; | |
2111 | ||
2112 | howto = elf_howto_table + ELF32_R_TYPE (rel->r_info); | |
4eca0228 | 2113 | _bfd_error_handler |
695344c0 | 2114 | /* xgettext:c-format */ |
2dcf00ce | 2115 | (_("%pB(%pA+%#" PRIx64 "): invalid instruction for TLS relocation %s"), |
d003868e AM |
2116 | input_bfd, |
2117 | input_section, | |
2dcf00ce | 2118 | (uint64_t) rel->r_offset, |
69fc87f1 | 2119 | howto->name); |
77df2968 | 2120 | bfd_set_error (bfd_error_bad_value); |
69fc87f1 MS |
2121 | } |
2122 | ||
a85d7ed0 NC |
2123 | /* Relocate a 390 ELF section. */ |
2124 | ||
b34976b6 | 2125 | static bfd_boolean |
2c3fc389 NC |
2126 | elf_s390_relocate_section (bfd *output_bfd, |
2127 | struct bfd_link_info *info, | |
2128 | bfd *input_bfd, | |
2129 | asection *input_section, | |
2130 | bfd_byte *contents, | |
2131 | Elf_Internal_Rela *relocs, | |
2132 | Elf_Internal_Sym *local_syms, | |
2133 | asection **local_sections) | |
a85d7ed0 | 2134 | { |
0451c93c | 2135 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
2136 | Elf_Internal_Shdr *symtab_hdr; |
2137 | struct elf_link_hash_entry **sym_hashes; | |
2138 | bfd_vma *local_got_offsets; | |
a85d7ed0 NC |
2139 | Elf_Internal_Rela *rel; |
2140 | Elf_Internal_Rela *relend; | |
2141 | ||
7af5d5c4 AM |
2142 | if (!is_s390_elf (input_bfd)) |
2143 | { | |
2144 | bfd_set_error (bfd_error_wrong_format); | |
2145 | return FALSE; | |
2146 | } | |
0ffa91dd | 2147 | |
0451c93c | 2148 | htab = elf_s390_hash_table (info); |
0ffa91dd | 2149 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
a85d7ed0 NC |
2150 | sym_hashes = elf_sym_hashes (input_bfd); |
2151 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2152 | ||
a85d7ed0 NC |
2153 | rel = relocs; |
2154 | relend = relocs + input_section->reloc_count; | |
2155 | for (; rel < relend; rel++) | |
2156 | { | |
5236c819 | 2157 | unsigned int r_type; |
a85d7ed0 NC |
2158 | reloc_howto_type *howto; |
2159 | unsigned long r_symndx; | |
2160 | struct elf_link_hash_entry *h; | |
2161 | Elf_Internal_Sym *sym; | |
2162 | asection *sec; | |
0451c93c | 2163 | bfd_vma off; |
a85d7ed0 | 2164 | bfd_vma relocation; |
b34976b6 | 2165 | bfd_boolean unresolved_reloc; |
a85d7ed0 | 2166 | bfd_reloc_status_type r; |
69fc87f1 | 2167 | int tls_type; |
470b557a | 2168 | asection *base_got = htab->elf.sgot; |
b27bb18f | 2169 | bfd_boolean resolved_to_zero; |
ec338859 | 2170 | |
a85d7ed0 NC |
2171 | r_type = ELF32_R_TYPE (rel->r_info); |
2172 | if (r_type == (int) R_390_GNU_VTINHERIT | |
26e41594 AM |
2173 | || r_type == (int) R_390_GNU_VTENTRY) |
2174 | continue; | |
5236c819 | 2175 | if (r_type >= (int) R_390_max) |
a85d7ed0 NC |
2176 | { |
2177 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2178 | return FALSE; |
a85d7ed0 | 2179 | } |
ec338859 | 2180 | |
b491616a | 2181 | howto = elf_howto_table + r_type; |
a85d7ed0 | 2182 | r_symndx = ELF32_R_SYM (rel->r_info); |
5236c819 | 2183 | |
a85d7ed0 NC |
2184 | h = NULL; |
2185 | sym = NULL; | |
2186 | sec = NULL; | |
b34976b6 | 2187 | unresolved_reloc = FALSE; |
a85d7ed0 NC |
2188 | if (r_symndx < symtab_hdr->sh_info) |
2189 | { | |
2190 | sym = local_syms + r_symndx; | |
2191 | sec = local_sections[r_symndx]; | |
470b557a AK |
2192 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
2193 | { | |
2194 | struct plt_entry *local_plt = elf_s390_local_plt (input_bfd); | |
2195 | if (local_plt == NULL) | |
2196 | return FALSE; | |
2197 | ||
2198 | /* Address of the PLT slot. */ | |
2199 | relocation = (htab->elf.iplt->output_section->vma | |
2200 | + htab->elf.iplt->output_offset | |
2201 | + local_plt[r_symndx].plt.offset); | |
2202 | ||
2203 | switch (r_type) | |
2204 | { | |
31db78f6 AK |
2205 | case R_390_PLTOFF16: |
2206 | case R_390_PLTOFF32: | |
2207 | relocation -= htab->elf.sgot->output_section->vma; | |
2208 | break; | |
470b557a AK |
2209 | case R_390_GOTPLT12: |
2210 | case R_390_GOTPLT16: | |
2211 | case R_390_GOTPLT20: | |
2212 | case R_390_GOTPLT32: | |
2213 | case R_390_GOTPLTENT: | |
2214 | case R_390_GOT12: | |
2215 | case R_390_GOT16: | |
2216 | case R_390_GOT20: | |
2217 | case R_390_GOT32: | |
2218 | case R_390_GOTENT: | |
2219 | { | |
2220 | /* Write the PLT slot address into the GOT slot. */ | |
2221 | bfd_put_32 (output_bfd, relocation, | |
2222 | htab->elf.sgot->contents + | |
2223 | local_got_offsets[r_symndx]); | |
2224 | relocation = (local_got_offsets[r_symndx] + | |
2225 | htab->elf.sgot->output_offset); | |
2226 | ||
2227 | if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT) | |
2228 | relocation += htab->elf.sgot->output_section->vma; | |
2229 | break; | |
2230 | } | |
2231 | default: | |
2232 | break; | |
2233 | } | |
2234 | /* The output section is needed later in | |
2235 | finish_dynamic_section when creating the dynamic | |
2236 | relocation. */ | |
2237 | local_plt[r_symndx].sec = sec; | |
2238 | goto do_relocation; | |
2239 | } | |
2240 | else | |
2241 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
a85d7ed0 NC |
2242 | } |
2243 | else | |
2244 | { | |
560e09e9 | 2245 | bfd_boolean warned ATTRIBUTE_UNUSED; |
62d887d4 | 2246 | bfd_boolean ignored ATTRIBUTE_UNUSED; |
ec338859 | 2247 | |
b2a8e766 AM |
2248 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2249 | r_symndx, symtab_hdr, sym_hashes, | |
2250 | h, sec, relocation, | |
62d887d4 | 2251 | unresolved_reloc, warned, ignored); |
a85d7ed0 | 2252 | } |
ec338859 | 2253 | |
dbaa2011 | 2254 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 2255 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 2256 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 2257 | |
0e1862bb | 2258 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
2259 | continue; |
2260 | ||
b27bb18f L |
2261 | resolved_to_zero = (h != NULL |
2262 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
2263 | ||
a85d7ed0 NC |
2264 | switch (r_type) |
2265 | { | |
5236c819 MS |
2266 | case R_390_GOTPLT12: |
2267 | case R_390_GOTPLT16: | |
bd1ea41b | 2268 | case R_390_GOTPLT20: |
5236c819 MS |
2269 | case R_390_GOTPLT32: |
2270 | case R_390_GOTPLTENT: | |
2271 | /* There are three cases for a GOTPLT relocation. 1) The | |
2272 | relocation is against the jump slot entry of a plt that | |
2273 | will get emitted to the output file. 2) The relocation | |
2274 | is against the jump slot of a plt entry that has been | |
2275 | removed. elf_s390_adjust_gotplt has created a GOT entry | |
2276 | as replacement. 3) The relocation is against a local symbol. | |
2277 | Cases 2) and 3) are the same as the GOT relocation code | |
2278 | so we just have to test for case 1 and fall through for | |
2279 | the other two. */ | |
2280 | if (h != NULL && h->plt.offset != (bfd_vma) -1) | |
2281 | { | |
2282 | bfd_vma plt_index; | |
2283 | ||
470b557a AK |
2284 | if (s390_is_ifunc_symbol_p (h)) |
2285 | { | |
2286 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; | |
2287 | relocation = (plt_index * GOT_ENTRY_SIZE + | |
2288 | htab->elf.igotplt->output_offset); | |
2289 | if (r_type == R_390_GOTPLTENT) | |
2290 | relocation += htab->elf.igotplt->output_section->vma; | |
2291 | } | |
2292 | else | |
2293 | { | |
2294 | /* Calc. index no. | |
2295 | Current offset - size first entry / entry size. */ | |
2296 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / | |
2297 | PLT_ENTRY_SIZE; | |
2298 | ||
2299 | /* Offset in GOT is PLT index plus GOT headers(3) | |
2300 | times 4, addr & GOT addr. */ | |
2301 | relocation = (plt_index + 3) * GOT_ENTRY_SIZE; | |
2302 | if (r_type == R_390_GOTPLTENT) | |
2303 | relocation += htab->elf.sgot->output_section->vma; | |
2304 | } | |
5236c819 MS |
2305 | unresolved_reloc = FALSE; |
2306 | ||
5236c819 MS |
2307 | } |
2308 | /* Fall through. */ | |
2309 | ||
26e41594 AM |
2310 | case R_390_GOT12: |
2311 | case R_390_GOT16: | |
bd1ea41b | 2312 | case R_390_GOT20: |
26e41594 | 2313 | case R_390_GOT32: |
befc3abb | 2314 | case R_390_GOTENT: |
26e41594 AM |
2315 | /* Relocation is to the entry for this symbol in the global |
2316 | offset table. */ | |
470b557a | 2317 | if (base_got == NULL) |
0451c93c | 2318 | abort (); |
ec338859 | 2319 | |
26e41594 AM |
2320 | if (h != NULL) |
2321 | { | |
b34976b6 | 2322 | bfd_boolean dyn; |
ec338859 | 2323 | |
26e41594 | 2324 | off = h->got.offset; |
0451c93c | 2325 | dyn = htab->elf.dynamic_sections_created; |
470b557a AK |
2326 | |
2327 | if (s390_is_ifunc_symbol_p (h)) | |
2328 | { | |
2329 | BFD_ASSERT (h->plt.offset != (bfd_vma) -1); | |
2330 | if (off == (bfd_vma)-1) | |
2331 | { | |
2332 | /* No explicit GOT usage so redirect to the | |
2333 | got.iplt slot. */ | |
2334 | base_got = htab->elf.igotplt; | |
2335 | off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE; | |
2336 | } | |
2337 | else | |
2338 | { | |
2339 | /* Explicit GOT slots must contain the address | |
2340 | of the PLT slot. This will be handled in | |
2341 | finish_dynamic_symbol. */ | |
2342 | } | |
2343 | } | |
0e1862bb L |
2344 | else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
2345 | bfd_link_pic (info), | |
2346 | h) | |
2347 | || (bfd_link_pic (info) | |
470b557a AK |
2348 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
2349 | || (ELF_ST_VISIBILITY (h->other) | |
2350 | && h->root.type == bfd_link_hash_undefweak)) | |
2351 | ||
26e41594 AM |
2352 | { |
2353 | /* This is actually a static link, or it is a | |
2354 | -Bsymbolic link and the symbol is defined | |
2355 | locally, or the symbol was forced to be local | |
2356 | because of a version file. We must initialize | |
2357 | this entry in the global offset table. Since the | |
2358 | offset must always be a multiple of 2, we use the | |
2359 | least significant bit to record whether we have | |
2360 | initialized it already. | |
2361 | ||
2362 | When doing a dynamic link, we create a .rel.got | |
2363 | relocation entry to initialize the value. This | |
2364 | is done in the finish_dynamic_symbol routine. */ | |
2365 | if ((off & 1) != 0) | |
2366 | off &= ~1; | |
2367 | else | |
2368 | { | |
a85d7ed0 | 2369 | bfd_put_32 (output_bfd, relocation, |
470b557a | 2370 | base_got->contents + off); |
26e41594 AM |
2371 | h->got.offset |= 1; |
2372 | } | |
a63cc5f7 AK |
2373 | |
2374 | if ((h->def_regular | |
0e1862bb | 2375 | && bfd_link_pic (info) |
a63cc5f7 AK |
2376 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
2377 | /* lrl rx,sym@GOTENT -> larl rx, sym */ | |
2378 | && ((r_type == R_390_GOTENT | |
2379 | && (bfd_get_16 (input_bfd, | |
2380 | contents + rel->r_offset - 2) | |
2381 | & 0xff0f) == 0xc40d) | |
2382 | /* ly rx, sym@GOT(r12) -> larl rx, sym */ | |
2383 | || (r_type == R_390_GOT20 | |
2384 | && (bfd_get_32 (input_bfd, | |
2385 | contents + rel->r_offset - 2) | |
2386 | & 0xff00f000) == 0xe300c000 | |
2387 | && bfd_get_8 (input_bfd, | |
2388 | contents + rel->r_offset + 3) == 0x58))) | |
2389 | { | |
2390 | unsigned short new_insn = | |
2391 | (0xc000 | (bfd_get_8 (input_bfd, | |
2392 | contents + rel->r_offset - 1) & 0xf0)); | |
2393 | bfd_put_16 (output_bfd, new_insn, | |
2394 | contents + rel->r_offset - 2); | |
2395 | r_type = R_390_PC32DBL; | |
2396 | rel->r_addend = 2; | |
2397 | howto = elf_howto_table + r_type; | |
2398 | relocation = h->root.u.def.value | |
2399 | + h->root.u.def.section->output_section->vma | |
2400 | + h->root.u.def.section->output_offset; | |
2401 | goto do_relocation; | |
2402 | } | |
26e41594 | 2403 | } |
0451c93c | 2404 | else |
b34976b6 | 2405 | unresolved_reloc = FALSE; |
26e41594 AM |
2406 | } |
2407 | else | |
2408 | { | |
0451c93c MS |
2409 | if (local_got_offsets == NULL) |
2410 | abort (); | |
a85d7ed0 | 2411 | |
26e41594 | 2412 | off = local_got_offsets[r_symndx]; |
a85d7ed0 | 2413 | |
26e41594 AM |
2414 | /* The offset must always be a multiple of 4. We use |
2415 | the least significant bit to record whether we have | |
2416 | already generated the necessary reloc. */ | |
2417 | if ((off & 1) != 0) | |
2418 | off &= ~1; | |
2419 | else | |
2420 | { | |
2421 | bfd_put_32 (output_bfd, relocation, | |
f41345a7 | 2422 | htab->elf.sgot->contents + off); |
a85d7ed0 | 2423 | |
0e1862bb | 2424 | if (bfd_link_pic (info)) |
26e41594 AM |
2425 | { |
2426 | asection *srelgot; | |
2427 | Elf_Internal_Rela outrel; | |
947216bf | 2428 | bfd_byte *loc; |
a85d7ed0 | 2429 | |
f41345a7 | 2430 | srelgot = htab->elf.srelgot; |
0451c93c MS |
2431 | if (srelgot == NULL) |
2432 | abort (); | |
a85d7ed0 | 2433 | |
f41345a7 AK |
2434 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2435 | + htab->elf.sgot->output_offset | |
26e41594 AM |
2436 | + off); |
2437 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
a85d7ed0 | 2438 | outrel.r_addend = relocation; |
947216bf AM |
2439 | loc = srelgot->contents; |
2440 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
26e41594 AM |
2441 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
2442 | } | |
a85d7ed0 | 2443 | |
26e41594 AM |
2444 | local_got_offsets[r_symndx] |= 1; |
2445 | } | |
2446 | } | |
a85d7ed0 | 2447 | |
0451c93c MS |
2448 | if (off >= (bfd_vma) -2) |
2449 | abort (); | |
a85d7ed0 | 2450 | |
470b557a | 2451 | relocation = base_got->output_offset + off; |
befc3abb | 2452 | |
ae9a127f NC |
2453 | /* For @GOTENT the relocation is against the offset between |
2454 | the instruction and the symbols entry in the GOT and not | |
2455 | between the start of the GOT and the symbols entry. We | |
2456 | add the vma of the GOT to get the correct value. */ | |
5236c819 MS |
2457 | if ( r_type == R_390_GOTENT |
2458 | || r_type == R_390_GOTPLTENT) | |
470b557a | 2459 | relocation += base_got->output_section->vma; |
befc3abb | 2460 | |
26e41594 | 2461 | break; |
dc810e39 | 2462 | |
5236c819 | 2463 | case R_390_GOTOFF16: |
26e41594 AM |
2464 | case R_390_GOTOFF32: |
2465 | /* Relocation is relative to the start of the global offset | |
2466 | table. */ | |
2467 | ||
01a53584 AK |
2468 | if (h != NULL |
2469 | && s390_is_ifunc_symbol_p (h) | |
2470 | && h->def_regular | |
2471 | && !bfd_link_executable (info)) | |
2472 | { | |
2473 | relocation = (htab->elf.iplt->output_section->vma | |
2474 | + htab->elf.iplt->output_offset | |
2475 | + h->plt.offset | |
2476 | - htab->elf.sgot->output_section->vma); | |
2477 | goto do_relocation; | |
2478 | } | |
2479 | ||
26e41594 AM |
2480 | /* Note that sgot->output_offset is not involved in this |
2481 | calculation. We always want the start of .got. If we | |
2482 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
2483 | permitted by the ABI, we might have to change this | |
2484 | calculation. */ | |
f41345a7 | 2485 | relocation -= htab->elf.sgot->output_section->vma; |
26e41594 AM |
2486 | break; |
2487 | ||
2488 | case R_390_GOTPC: | |
befc3abb | 2489 | case R_390_GOTPCDBL: |
26e41594 | 2490 | /* Use global offset table as symbol value. */ |
f41345a7 | 2491 | relocation = htab->elf.sgot->output_section->vma; |
b34976b6 | 2492 | unresolved_reloc = FALSE; |
26e41594 | 2493 | break; |
a85d7ed0 | 2494 | |
fb798c50 | 2495 | case R_390_PLT12DBL: |
26e41594 | 2496 | case R_390_PLT16DBL: |
fb798c50 | 2497 | case R_390_PLT24DBL: |
26e41594 AM |
2498 | case R_390_PLT32DBL: |
2499 | case R_390_PLT32: | |
2500 | /* Relocation is to the entry for this symbol in the | |
2501 | procedure linkage table. */ | |
a85d7ed0 | 2502 | |
26e41594 AM |
2503 | /* Resolve a PLT32 reloc against a local symbol directly, |
2504 | without using the procedure linkage table. */ | |
2505 | if (h == NULL) | |
2506 | break; | |
a85d7ed0 | 2507 | |
26e41594 | 2508 | if (h->plt.offset == (bfd_vma) -1 |
470b557a | 2509 | || (htab->elf.splt == NULL && htab->elf.iplt == NULL)) |
26e41594 AM |
2510 | { |
2511 | /* We didn't make a PLT entry for this symbol. This | |
2512 | happens when statically linking PIC code, or when | |
2513 | using -Bsymbolic. */ | |
2514 | break; | |
2515 | } | |
2516 | ||
470b557a AK |
2517 | if (s390_is_ifunc_symbol_p (h)) |
2518 | relocation = (htab->elf.iplt->output_section->vma | |
07d6d2b8 | 2519 | + htab->elf.iplt->output_offset |
470b557a AK |
2520 | + h->plt.offset); |
2521 | else | |
2522 | relocation = (htab->elf.splt->output_section->vma | |
2523 | + htab->elf.splt->output_offset | |
2524 | + h->plt.offset); | |
b34976b6 | 2525 | unresolved_reloc = FALSE; |
26e41594 | 2526 | break; |
a85d7ed0 | 2527 | |
5236c819 MS |
2528 | case R_390_PLTOFF16: |
2529 | case R_390_PLTOFF32: | |
26e41594 AM |
2530 | /* Relocation is to the entry for this symbol in the |
2531 | procedure linkage table relative to the start of the GOT. */ | |
5236c819 MS |
2532 | |
2533 | /* For local symbols or if we didn't make a PLT entry for | |
2534 | this symbol resolve the symbol directly. */ | |
31db78f6 | 2535 | if (h == NULL |
5236c819 | 2536 | || h->plt.offset == (bfd_vma) -1 |
31db78f6 | 2537 | || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h))) |
5236c819 | 2538 | { |
f41345a7 | 2539 | relocation -= htab->elf.sgot->output_section->vma; |
5236c819 MS |
2540 | break; |
2541 | } | |
2542 | ||
470b557a AK |
2543 | if (s390_is_ifunc_symbol_p (h)) |
2544 | relocation = (htab->elf.iplt->output_section->vma | |
2545 | + htab->elf.iplt->output_offset | |
2546 | + h->plt.offset | |
2547 | - htab->elf.sgot->output_section->vma); | |
2548 | else | |
2549 | relocation = (htab->elf.splt->output_section->vma | |
2550 | + htab->elf.splt->output_offset | |
2551 | + h->plt.offset | |
2552 | - htab->elf.sgot->output_section->vma); | |
5236c819 | 2553 | unresolved_reloc = FALSE; |
26e41594 AM |
2554 | break; |
2555 | ||
26e41594 | 2556 | case R_390_PC16: |
fb798c50 | 2557 | case R_390_PC12DBL: |
26e41594 | 2558 | case R_390_PC16DBL: |
fb798c50 | 2559 | case R_390_PC24DBL: |
26e41594 AM |
2560 | case R_390_PC32DBL: |
2561 | case R_390_PC32: | |
99ba5125 AK |
2562 | if (h != NULL |
2563 | && s390_is_ifunc_symbol_p (h) | |
2564 | && h->def_regular | |
2565 | && !bfd_link_executable (info)) | |
2566 | { | |
2567 | /* This will not work our if the function does not | |
2568 | happen to set up the GOT pointer for some other | |
2569 | reason. 31 bit PLT entries require r12 to hold the | |
2570 | GOT pointer. | |
2571 | FIXME: Implement an errorcheck. | |
2572 | NOTE: It will work when brasl is not available | |
2573 | (e.g. with -m31 -march=g5) since a local function | |
2574 | call then does use GOTOFF which implies r12 being set | |
2575 | up. */ | |
2576 | relocation = (htab->elf.iplt->output_section->vma | |
2577 | + htab->elf.iplt->output_offset | |
2578 | + h ->plt.offset); | |
2579 | goto do_relocation; | |
2580 | } | |
1a0670f3 | 2581 | /* Fall through. */ |
99ba5125 AK |
2582 | |
2583 | case R_390_8: | |
2584 | case R_390_16: | |
2585 | case R_390_32: | |
f657f8c4 NC |
2586 | if ((input_section->flags & SEC_ALLOC) == 0) |
2587 | break; | |
2588 | ||
470b557a AK |
2589 | if (h != NULL |
2590 | && s390_is_ifunc_symbol_p (h) | |
2591 | && h->def_regular) | |
2592 | { | |
d7ab4911 | 2593 | if (!bfd_link_pic (info)) |
470b557a AK |
2594 | { |
2595 | /* For a non-shared object STT_GNU_IFUNC symbol must | |
2596 | go through PLT. */ | |
2597 | relocation = (htab->elf.iplt->output_section->vma | |
2598 | + htab->elf.iplt->output_offset | |
2599 | + h ->plt.offset); | |
2600 | goto do_relocation; | |
2601 | } | |
2602 | else | |
2603 | { | |
2604 | /* For shared objects a runtime relocation is needed. */ | |
2605 | ||
2606 | Elf_Internal_Rela outrel; | |
2607 | asection *sreloc; | |
2608 | ||
2609 | /* Need a dynamic relocation to get the real function | |
2610 | address. */ | |
2611 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
2612 | info, | |
2613 | input_section, | |
2614 | rel->r_offset); | |
2615 | if (outrel.r_offset == (bfd_vma) -1 | |
2616 | || outrel.r_offset == (bfd_vma) -2) | |
2617 | abort (); | |
2618 | ||
2619 | outrel.r_offset += (input_section->output_section->vma | |
2620 | + input_section->output_offset); | |
2621 | ||
2622 | if (h->dynindx == -1 | |
2623 | || h->forced_local | |
0e1862bb | 2624 | || bfd_link_executable (info)) |
470b557a AK |
2625 | { |
2626 | /* This symbol is resolved locally. */ | |
2627 | outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE); | |
2628 | outrel.r_addend = (h->root.u.def.value | |
2629 | + h->root.u.def.section->output_section->vma | |
2630 | + h->root.u.def.section->output_offset); | |
2631 | } | |
2632 | else | |
2633 | { | |
2634 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
2635 | outrel.r_addend = 0; | |
2636 | } | |
2637 | ||
2638 | sreloc = htab->elf.irelifunc; | |
2639 | elf_append_rela (output_bfd, sreloc, &outrel); | |
2640 | ||
2641 | /* If this reloc is against an external symbol, we | |
2642 | do not want to fiddle with the addend. Otherwise, | |
2643 | we need to include the symbol value so that it | |
2644 | becomes an addend for the dynamic reloc. For an | |
2645 | internal symbol, we have updated addend. */ | |
2646 | continue; | |
2647 | } | |
2648 | } | |
2649 | ||
0e1862bb | 2650 | if ((bfd_link_pic (info) |
82058a73 | 2651 | && (h == NULL |
b27bb18f L |
2652 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2653 | && !resolved_to_zero) | |
82058a73 | 2654 | || h->root.type != bfd_link_hash_undefweak) |
0451c93c | 2655 | && ((r_type != R_390_PC16 |
fb798c50 | 2656 | && r_type != R_390_PC12DBL |
0451c93c | 2657 | && r_type != R_390_PC16DBL |
fb798c50 | 2658 | && r_type != R_390_PC24DBL |
befc3abb | 2659 | && r_type != R_390_PC32DBL |
0451c93c | 2660 | && r_type != R_390_PC32) |
8c21ca21 | 2661 | || !SYMBOL_CALLS_LOCAL (info, h))) |
64285810 | 2662 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 2663 | && !bfd_link_pic (info) |
0451c93c MS |
2664 | && h != NULL |
2665 | && h->dynindx != -1 | |
f5385ebf AM |
2666 | && !h->non_got_ref |
2667 | && ((h->def_dynamic | |
2668 | && !h->def_regular) | |
0451c93c MS |
2669 | || h->root.type == bfd_link_hash_undefweak |
2670 | || h->root.type == bfd_link_hash_undefined))) | |
26e41594 AM |
2671 | { |
2672 | Elf_Internal_Rela outrel; | |
2673 | bfd_boolean skip, relocate; | |
0451c93c | 2674 | asection *sreloc; |
947216bf | 2675 | bfd_byte *loc; |
ec338859 | 2676 | |
0451c93c MS |
2677 | /* When generating a shared object, these relocations |
2678 | are copied into the output file to be resolved at run | |
2679 | time. */ | |
ec338859 | 2680 | |
26e41594 AM |
2681 | skip = FALSE; |
2682 | relocate = FALSE; | |
ec338859 | 2683 | |
c629eae0 JJ |
2684 | outrel.r_offset = |
2685 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2686 | rel->r_offset); | |
2687 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2688 | skip = TRUE; |
0bb2d96a | 2689 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2690 | skip = TRUE, relocate = TRUE; |
26e41594 AM |
2691 | outrel.r_offset += (input_section->output_section->vma |
2692 | + input_section->output_offset); | |
ec338859 | 2693 | |
26e41594 | 2694 | if (skip) |
0bb2d96a | 2695 | memset (&outrel, 0, sizeof outrel); |
26e41594 | 2696 | else if (h != NULL |
0451c93c MS |
2697 | && h->dynindx != -1 |
2698 | && (r_type == R_390_PC16 | |
fb798c50 | 2699 | || r_type == R_390_PC12DBL |
0451c93c | 2700 | || r_type == R_390_PC16DBL |
fb798c50 | 2701 | || r_type == R_390_PC24DBL |
befc3abb | 2702 | || r_type == R_390_PC32DBL |
0451c93c | 2703 | || r_type == R_390_PC32 |
0e1862bb | 2704 | || !bfd_link_pic (info) |
8c21ca21 | 2705 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 2706 | || !h->def_regular)) |
26e41594 AM |
2707 | { |
2708 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
27018c3f | 2709 | outrel.r_addend = rel->r_addend; |
26e41594 AM |
2710 | } |
2711 | else | |
2712 | { | |
0451c93c | 2713 | /* This symbol is local, or marked to become local. */ |
90ced0dd | 2714 | outrel.r_addend = relocation + rel->r_addend; |
b5727d75 MS |
2715 | if (r_type == R_390_32) |
2716 | { | |
2717 | relocate = TRUE; | |
2718 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
b5727d75 MS |
2719 | } |
2720 | else | |
2721 | { | |
2722 | long sindx; | |
2723 | ||
90ced0dd | 2724 | if (bfd_is_abs_section (sec)) |
b5727d75 MS |
2725 | sindx = 0; |
2726 | else if (sec == NULL || sec->owner == NULL) | |
2727 | { | |
2728 | bfd_set_error(bfd_error_bad_value); | |
2729 | return FALSE; | |
2730 | } | |
2731 | else | |
2732 | { | |
2733 | asection *osec; | |
2734 | ||
2735 | osec = sec->output_section; | |
2736 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
2737 | if (sindx == 0) |
2738 | { | |
2739 | osec = htab->elf.text_index_section; | |
2740 | sindx = elf_section_data (osec)->dynindx; | |
2741 | } | |
2742 | BFD_ASSERT (sindx != 0); | |
90ced0dd MS |
2743 | |
2744 | /* We are turning this relocation into one | |
2745 | against a section symbol, so subtract out | |
2746 | the output section's address but not the | |
2747 | offset of the input section in the output | |
2748 | section. */ | |
90ced0dd | 2749 | outrel.r_addend -= osec->vma; |
b5727d75 MS |
2750 | } |
2751 | outrel.r_info = ELF32_R_INFO (sindx, r_type); | |
b5727d75 | 2752 | } |
26e41594 | 2753 | } |
ec338859 | 2754 | |
0451c93c MS |
2755 | sreloc = elf_section_data (input_section)->sreloc; |
2756 | if (sreloc == NULL) | |
2757 | abort (); | |
ec338859 | 2758 | |
947216bf AM |
2759 | loc = sreloc->contents; |
2760 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 2761 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
ec338859 | 2762 | |
26e41594 AM |
2763 | /* If this reloc is against an external symbol, we do |
2764 | not want to fiddle with the addend. Otherwise, we | |
2765 | need to include the symbol value so that it becomes | |
2766 | an addend for the dynamic reloc. */ | |
2767 | if (! relocate) | |
2768 | continue; | |
2769 | } | |
0451c93c | 2770 | break; |
ec338859 | 2771 | |
69fc87f1 MS |
2772 | /* Relocations for tls literal pool entries. */ |
2773 | case R_390_TLS_IE32: | |
0e1862bb | 2774 | if (bfd_link_pic (info)) |
69fc87f1 MS |
2775 | { |
2776 | Elf_Internal_Rela outrel; | |
2777 | asection *sreloc; | |
2778 | bfd_byte *loc; | |
2779 | ||
2780 | outrel.r_offset = rel->r_offset | |
2781 | + input_section->output_section->vma | |
2782 | + input_section->output_offset; | |
2783 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
2784 | sreloc = elf_section_data (input_section)->sreloc; | |
2785 | if (sreloc == NULL) | |
2786 | abort (); | |
2787 | loc = sreloc->contents; | |
2788 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
2789 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
2790 | } | |
ae9a127f | 2791 | /* Fall through. */ |
69fc87f1 MS |
2792 | |
2793 | case R_390_TLS_GD32: | |
2794 | case R_390_TLS_GOTIE32: | |
2795 | r_type = elf_s390_tls_transition (info, r_type, h == NULL); | |
2796 | tls_type = GOT_UNKNOWN; | |
2797 | if (h == NULL && local_got_offsets) | |
2798 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
2799 | else if (h != NULL) | |
2800 | { | |
2801 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
0e1862bb L |
2802 | if (!bfd_link_pic (info) |
2803 | && h->dynindx == -1 | |
2804 | && tls_type >= GOT_TLS_IE) | |
69fc87f1 MS |
2805 | r_type = R_390_TLS_LE32; |
2806 | } | |
2807 | if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE) | |
2808 | r_type = R_390_TLS_IE32; | |
2809 | ||
2810 | if (r_type == R_390_TLS_LE32) | |
2811 | { | |
2812 | /* This relocation gets optimized away by the local exec | |
2813 | access optimization. */ | |
2814 | BFD_ASSERT (! unresolved_reloc); | |
2815 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
2816 | contents + rel->r_offset); | |
2817 | continue; | |
2818 | } | |
2819 | ||
f41345a7 | 2820 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2821 | abort (); |
2822 | ||
2823 | if (h != NULL) | |
2824 | off = h->got.offset; | |
2825 | else | |
2826 | { | |
2827 | if (local_got_offsets == NULL) | |
2828 | abort (); | |
2829 | ||
2830 | off = local_got_offsets[r_symndx]; | |
2831 | } | |
2832 | ||
2833 | emit_tls_relocs: | |
2834 | ||
2835 | if ((off & 1) != 0) | |
2836 | off &= ~1; | |
26e41594 | 2837 | else |
69fc87f1 MS |
2838 | { |
2839 | Elf_Internal_Rela outrel; | |
2840 | bfd_byte *loc; | |
2841 | int dr_type, indx; | |
2842 | ||
f41345a7 | 2843 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2844 | abort (); |
2845 | ||
f41345a7 AK |
2846 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2847 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2848 | |
2849 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
2850 | if (r_type == R_390_TLS_GD32) | |
2851 | dr_type = R_390_TLS_DTPMOD; | |
2852 | else | |
2853 | dr_type = R_390_TLS_TPOFF; | |
2854 | if (dr_type == R_390_TLS_TPOFF && indx == 0) | |
2855 | outrel.r_addend = relocation - dtpoff_base (info); | |
2856 | else | |
2857 | outrel.r_addend = 0; | |
2858 | outrel.r_info = ELF32_R_INFO (indx, dr_type); | |
f41345a7 AK |
2859 | loc = htab->elf.srelgot->contents; |
2860 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
2861 | * sizeof (Elf32_External_Rela); |
2862 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
2863 | ||
2864 | if (r_type == R_390_TLS_GD32) | |
2865 | { | |
2866 | if (indx == 0) | |
2867 | { | |
26e41594 | 2868 | BFD_ASSERT (! unresolved_reloc); |
69fc87f1 MS |
2869 | bfd_put_32 (output_bfd, |
2870 | relocation - dtpoff_base (info), | |
f41345a7 | 2871 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2872 | } |
2873 | else | |
2874 | { | |
2875 | outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF); | |
2876 | outrel.r_offset += GOT_ENTRY_SIZE; | |
2877 | outrel.r_addend = 0; | |
f41345a7 | 2878 | htab->elf.srelgot->reloc_count++; |
69fc87f1 MS |
2879 | loc += sizeof (Elf32_External_Rela); |
2880 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
2881 | } | |
2882 | } | |
2883 | ||
2884 | if (h != NULL) | |
2885 | h->got.offset |= 1; | |
2886 | else | |
2887 | local_got_offsets[r_symndx] |= 1; | |
2888 | } | |
2889 | ||
2890 | if (off >= (bfd_vma) -2) | |
2891 | abort (); | |
2892 | if (r_type == ELF32_R_TYPE (rel->r_info)) | |
2893 | { | |
f41345a7 | 2894 | relocation = htab->elf.sgot->output_offset + off; |
69fc87f1 | 2895 | if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT) |
f41345a7 | 2896 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
2897 | unresolved_reloc = FALSE; |
2898 | } | |
2899 | else | |
2900 | { | |
f41345a7 | 2901 | bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off, |
69fc87f1 MS |
2902 | contents + rel->r_offset); |
2903 | continue; | |
2904 | } | |
2905 | break; | |
2906 | ||
2907 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 2908 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
2909 | case R_390_TLS_IEENT: |
2910 | if (h == NULL) | |
2911 | { | |
2912 | if (local_got_offsets == NULL) | |
2913 | abort(); | |
2914 | off = local_got_offsets[r_symndx]; | |
0e1862bb | 2915 | if (bfd_link_pic (info)) |
69fc87f1 MS |
2916 | goto emit_tls_relocs; |
2917 | } | |
2918 | else | |
2919 | { | |
2920 | off = h->got.offset; | |
2921 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
0e1862bb L |
2922 | if (bfd_link_pic (info) |
2923 | || h->dynindx != -1 | |
2924 | || tls_type < GOT_TLS_IE) | |
69fc87f1 MS |
2925 | goto emit_tls_relocs; |
2926 | } | |
2927 | ||
f41345a7 | 2928 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2929 | abort (); |
2930 | ||
2931 | BFD_ASSERT (! unresolved_reloc); | |
2932 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
f41345a7 AK |
2933 | htab->elf.sgot->contents + off); |
2934 | relocation = htab->elf.sgot->output_offset + off; | |
69fc87f1 | 2935 | if (r_type == R_390_TLS_IEENT) |
f41345a7 | 2936 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
2937 | unresolved_reloc = FALSE; |
2938 | break; | |
2939 | ||
2940 | case R_390_TLS_LDM32: | |
0e1862bb | 2941 | if (! bfd_link_pic (info)) |
69fc87f1 MS |
2942 | /* The literal pool entry this relocation refers to gets ignored |
2943 | by the optimized code of the local exec model. Do nothing | |
2944 | and the value will turn out zero. */ | |
2945 | continue; | |
2946 | ||
f41345a7 | 2947 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2948 | abort (); |
2949 | ||
2950 | off = htab->tls_ldm_got.offset; | |
2951 | if (off & 1) | |
2952 | off &= ~1; | |
2953 | else | |
2954 | { | |
2955 | Elf_Internal_Rela outrel; | |
2956 | bfd_byte *loc; | |
2957 | ||
f41345a7 | 2958 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2959 | abort (); |
2960 | ||
f41345a7 AK |
2961 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2962 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2963 | |
2964 | bfd_put_32 (output_bfd, 0, | |
f41345a7 | 2965 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2966 | outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD); |
2967 | outrel.r_addend = 0; | |
f41345a7 AK |
2968 | loc = htab->elf.srelgot->contents; |
2969 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
2970 | * sizeof (Elf32_External_Rela); |
2971 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
2972 | htab->tls_ldm_got.offset |= 1; | |
2973 | } | |
f41345a7 | 2974 | relocation = htab->elf.sgot->output_offset + off; |
26e41594 | 2975 | unresolved_reloc = FALSE; |
69fc87f1 MS |
2976 | break; |
2977 | ||
2978 | case R_390_TLS_LE32: | |
3cbc1e5e | 2979 | if (bfd_link_dll (info)) |
69fc87f1 MS |
2980 | { |
2981 | /* Linking a shared library with non-fpic code requires | |
2982 | a R_390_TLS_TPOFF relocation. */ | |
2983 | Elf_Internal_Rela outrel; | |
2984 | asection *sreloc; | |
2985 | bfd_byte *loc; | |
2986 | int indx; | |
2987 | ||
2988 | outrel.r_offset = rel->r_offset | |
2989 | + input_section->output_section->vma | |
2990 | + input_section->output_offset; | |
2991 | if (h != NULL && h->dynindx != -1) | |
2992 | indx = h->dynindx; | |
2993 | else | |
2994 | indx = 0; | |
2995 | outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF); | |
2996 | if (indx == 0) | |
2997 | outrel.r_addend = relocation - dtpoff_base (info); | |
2998 | else | |
2999 | outrel.r_addend = 0; | |
3000 | sreloc = elf_section_data (input_section)->sreloc; | |
3001 | if (sreloc == NULL) | |
3002 | abort (); | |
3003 | loc = sreloc->contents; | |
3004 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
3005 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
3006 | } | |
3007 | else | |
3008 | { | |
3009 | BFD_ASSERT (! unresolved_reloc); | |
3010 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
3011 | contents + rel->r_offset); | |
3012 | } | |
3013 | continue; | |
3014 | ||
3015 | case R_390_TLS_LDO32: | |
0e1862bb | 3016 | if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING)) |
69fc87f1 MS |
3017 | relocation -= dtpoff_base (info); |
3018 | else | |
3019 | /* When converting LDO to LE, we must negate. */ | |
3020 | relocation = -tpoff (info, relocation); | |
3021 | break; | |
3022 | ||
3023 | /* Relocations for tls instructions. */ | |
3024 | case R_390_TLS_LOAD: | |
3025 | case R_390_TLS_GDCALL: | |
3026 | case R_390_TLS_LDCALL: | |
3027 | tls_type = GOT_UNKNOWN; | |
3028 | if (h == NULL && local_got_offsets) | |
3029 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
3030 | else if (h != NULL) | |
3031 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
3032 | ||
3033 | if (tls_type == GOT_TLS_GD) | |
3034 | continue; | |
3035 | ||
3036 | if (r_type == R_390_TLS_LOAD) | |
3037 | { | |
0e1862bb | 3038 | if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) |
69fc87f1 MS |
3039 | { |
3040 | /* IE->LE transition. Four valid cases: | |
3041 | l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 | |
3042 | l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 | |
3043 | l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 | |
3044 | l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
3045 | unsigned int insn, ry; | |
3046 | ||
3047 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
69fc87f1 MS |
3048 | if ((insn & 0xff00f000) == 0x58000000) |
3049 | /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */ | |
3050 | ry = (insn & 0x000f0000); | |
3051 | else if ((insn & 0xff0f0000) == 0x58000000) | |
3052 | /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
3053 | ry = (insn & 0x0000f000) << 4; | |
3054 | else if ((insn & 0xff00f000) == 0x5800c000) | |
3055 | /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */ | |
3056 | ry = (insn & 0x000f0000); | |
3057 | else if ((insn & 0xff0f0000) == 0x580c0000) | |
3058 | /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
3059 | ry = (insn & 0x0000f000) << 4; | |
3060 | else | |
3704e358 AK |
3061 | { |
3062 | invalid_tls_insn (input_bfd, input_section, rel); | |
3063 | return FALSE; | |
3064 | } | |
69fc87f1 MS |
3065 | insn = 0x18000700 | (insn & 0x00f00000) | ry; |
3066 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
3067 | } | |
3068 | } | |
3069 | else if (r_type == R_390_TLS_GDCALL) | |
3070 | { | |
3071 | unsigned int insn; | |
3072 | ||
3073 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
77df2968 | 3074 | if ((insn & 0xff000fff) != 0x4d000000 && |
d0ddfe27 AK |
3075 | (insn & 0xffff0000) != 0xc0e50000 && |
3076 | (insn & 0xff000000) != 0x0d000000) | |
3704e358 AK |
3077 | { |
3078 | invalid_tls_insn (input_bfd, input_section, rel); | |
3079 | return FALSE; | |
3080 | } | |
0e1862bb | 3081 | if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) |
77df2968 | 3082 | { |
d0ddfe27 AK |
3083 | if ((insn & 0xff000000) == 0x0d000000) |
3084 | { | |
3085 | /* GD->LE transition. | |
3086 | basr rx, ry -> nopr r7 */ | |
3087 | insn = 0x07070000 | (insn & 0xffff); | |
3088 | } | |
3089 | else if ((insn & 0xff000000) == 0x4d000000) | |
77df2968 MS |
3090 | { |
3091 | /* GD->LE transition. | |
3092 | bas %r14,0(%rx,%r13) -> bc 0,0 */ | |
3093 | insn = 0x47000000; | |
3094 | } | |
3095 | else | |
3096 | { | |
3097 | /* GD->LE transition. | |
d0ddfe27 | 3098 | brasl %r14,_tls_get_offset@plt -> brcl 0,. */ |
77df2968 MS |
3099 | insn = 0xc0040000; |
3100 | bfd_put_16 (output_bfd, 0x0000, | |
3101 | contents + rel->r_offset + 4); | |
3102 | } | |
3103 | } | |
69fc87f1 | 3104 | else |
77df2968 | 3105 | { |
d0ddfe27 AK |
3106 | /* If basr is used in the pic case to invoke |
3107 | _tls_get_offset, something went wrong before. */ | |
3108 | if ((insn & 0xff000000) == 0x0d000000) | |
3704e358 AK |
3109 | { |
3110 | invalid_tls_insn (input_bfd, input_section, rel); | |
3111 | return FALSE; | |
3112 | } | |
d0ddfe27 | 3113 | |
77df2968 MS |
3114 | if ((insn & 0xff000000) == 0x4d000000) |
3115 | { | |
3116 | /* GD->IE transition. | |
3117 | bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */ | |
3118 | insn = 0x5822c000; | |
3119 | } | |
3120 | else | |
3121 | { | |
3122 | /* GD->IE transition. | |
3123 | brasl %r14,__tls_get_addr@plt -> | |
07d6d2b8 | 3124 | l %r2,0(%r2,%r12) ; bcr 0,0 */ |
77df2968 MS |
3125 | insn = 0x5822c000; |
3126 | bfd_put_16 (output_bfd, 0x0700, | |
3127 | contents + rel->r_offset + 4); | |
3128 | } | |
3129 | } | |
69fc87f1 MS |
3130 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
3131 | } | |
3132 | else if (r_type == R_390_TLS_LDCALL) | |
3133 | { | |
0e1862bb | 3134 | if (!bfd_link_pic (info)) |
69fc87f1 MS |
3135 | { |
3136 | unsigned int insn; | |
3137 | ||
3138 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
77df2968 | 3139 | if ((insn & 0xff000fff) != 0x4d000000 && |
d0ddfe27 AK |
3140 | (insn & 0xffff0000) != 0xc0e50000 && |
3141 | (insn & 0xff000000) != 0x0d000000) | |
3704e358 AK |
3142 | { |
3143 | invalid_tls_insn (input_bfd, input_section, rel); | |
3144 | return FALSE; | |
3145 | } | |
d0ddfe27 AK |
3146 | |
3147 | if ((insn & 0xff000000) == 0x0d000000) | |
3148 | { | |
3149 | /* LD->LE transition. | |
3150 | basr rx, ry -> nopr r7 */ | |
3151 | insn = 0x07070000 | (insn & 0xffff); | |
3152 | } | |
3153 | else if ((insn & 0xff000000) == 0x4d000000) | |
77df2968 MS |
3154 | { |
3155 | /* LD->LE transition. | |
3156 | bas %r14,0(%rx,%r13) -> bc 0,0 */ | |
3157 | insn = 0x47000000; | |
3158 | } | |
3159 | else | |
3160 | { | |
3161 | /* LD->LE transition. | |
d0ddfe27 | 3162 | brasl %r14,__tls_get_offset@plt -> brcl 0,. */ |
77df2968 MS |
3163 | insn = 0xc0040000; |
3164 | bfd_put_16 (output_bfd, 0x0000, | |
3165 | contents + rel->r_offset + 4); | |
3166 | } | |
69fc87f1 MS |
3167 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
3168 | } | |
3169 | } | |
3170 | continue; | |
3171 | ||
0451c93c MS |
3172 | default: |
3173 | break; | |
3174 | } | |
ec338859 | 3175 | |
239e1f3a AM |
3176 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3177 | because such sections are not SEC_ALLOC and thus ld.so will | |
3178 | not process them. */ | |
0451c93c | 3179 | if (unresolved_reloc |
239e1f3a | 3180 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
3181 | && h->def_dynamic) |
3182 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
3183 | rel->r_offset) != (bfd_vma) -1) | |
4eca0228 | 3184 | _bfd_error_handler |
695344c0 | 3185 | /* xgettext:c-format */ |
2dcf00ce AM |
3186 | (_("%pB(%pA+%#" PRIx64 "): " |
3187 | "unresolvable %s relocation against symbol `%s'"), | |
d003868e AM |
3188 | input_bfd, |
3189 | input_section, | |
2dcf00ce | 3190 | (uint64_t) rel->r_offset, |
843fe662 | 3191 | howto->name, |
0451c93c | 3192 | h->root.root.string); |
ec338859 | 3193 | |
470b557a AK |
3194 | do_relocation: |
3195 | ||
fb798c50 AK |
3196 | /* When applying a 24 bit reloc we need to start one byte |
3197 | earlier. Otherwise the 32 bit get/put bfd operations might | |
3198 | access a byte after the actual section. */ | |
3199 | if (r_type == R_390_PC24DBL | |
3200 | || r_type == R_390_PLT24DBL) | |
3201 | rel->r_offset--; | |
3202 | ||
bd1ea41b MS |
3203 | if (r_type == R_390_20 |
3204 | || r_type == R_390_GOT20 | |
3205 | || r_type == R_390_GOTPLT20 | |
3206 | || r_type == R_390_TLS_GOTIE20) | |
3207 | { | |
3208 | relocation += rel->r_addend; | |
3209 | relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12; | |
3210 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3211 | contents, rel->r_offset, | |
3212 | relocation, 0); | |
3213 | } | |
3214 | else | |
3215 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3216 | contents, rel->r_offset, | |
3217 | relocation, rel->r_addend); | |
ec338859 | 3218 | |
a85d7ed0 NC |
3219 | if (r != bfd_reloc_ok) |
3220 | { | |
0451c93c | 3221 | const char *name; |
ec338859 | 3222 | |
0451c93c MS |
3223 | if (h != NULL) |
3224 | name = h->root.root.string; | |
3225 | else | |
a85d7ed0 | 3226 | { |
0451c93c MS |
3227 | name = bfd_elf_string_from_elf_section (input_bfd, |
3228 | symtab_hdr->sh_link, | |
3229 | sym->st_name); | |
3230 | if (name == NULL) | |
b34976b6 | 3231 | return FALSE; |
0451c93c | 3232 | if (*name == '\0') |
fd361982 | 3233 | name = bfd_section_name (sec); |
0451c93c | 3234 | } |
ec338859 | 3235 | |
0451c93c | 3236 | if (r == bfd_reloc_overflow) |
1a72702b AM |
3237 | (*info->callbacks->reloc_overflow) |
3238 | (info, (h ? &h->root : NULL), name, howto->name, | |
3239 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
0451c93c MS |
3240 | else |
3241 | { | |
4eca0228 | 3242 | _bfd_error_handler |
695344c0 | 3243 | /* xgettext:c-format */ |
2dcf00ce | 3244 | (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"), |
d003868e | 3245 | input_bfd, input_section, |
2dcf00ce | 3246 | (uint64_t) rel->r_offset, name, (int) r); |
b34976b6 | 3247 | return FALSE; |
a85d7ed0 NC |
3248 | } |
3249 | } | |
3250 | } | |
ec338859 | 3251 | |
b34976b6 | 3252 | return TRUE; |
a85d7ed0 NC |
3253 | } |
3254 | ||
470b557a AK |
3255 | /* Generate the PLT slots together with the dynamic relocations needed |
3256 | for IFUNC symbols. */ | |
3257 | ||
3258 | static void | |
3259 | elf_s390_finish_ifunc_symbol (bfd *output_bfd, | |
3260 | struct bfd_link_info *info, | |
3261 | struct elf_link_hash_entry *h, | |
3262 | struct elf_s390_link_hash_table *htab, | |
3263 | bfd_vma iplt_offset, | |
3264 | bfd_vma resolver_address) | |
3265 | { | |
3266 | bfd_vma iplt_index; | |
3267 | bfd_vma got_offset; | |
3268 | bfd_vma igotiplt_offset; | |
3269 | Elf_Internal_Rela rela; | |
3270 | bfd_byte *loc; | |
3271 | asection *plt, *gotplt, *relplt; | |
3272 | bfd_vma relative_offset; | |
3273 | ||
3274 | if (htab->elf.iplt == NULL | |
3275 | || htab->elf.igotplt == NULL | |
3276 | || htab->elf.irelplt == NULL) | |
3277 | abort (); | |
3278 | ||
3279 | gotplt = htab->elf.igotplt; | |
3280 | relplt = htab->elf.irelplt; | |
3281 | ||
3282 | /* Index of the PLT slot within iplt section. */ | |
3283 | iplt_index = iplt_offset / PLT_ENTRY_SIZE; | |
3284 | plt = htab->elf.iplt; | |
3285 | /* Offset into the igot.plt section. */ | |
3286 | igotiplt_offset = iplt_index * GOT_ENTRY_SIZE; | |
3287 | /* Offset into the got section. */ | |
3288 | got_offset = igotiplt_offset + gotplt->output_offset; | |
3289 | ||
3290 | /* S390 uses halfwords for relative branch calc! */ | |
3291 | relative_offset = - (plt->output_offset + | |
3292 | (PLT_ENTRY_SIZE * iplt_index) + 18) / 2; | |
ceada896 AA |
3293 | /* If offset is > 32768, branch to a previous branch |
3294 | 390 can only handle +-64 K jumps. */ | |
470b557a AK |
3295 | if ( -32768 > (int) relative_offset ) |
3296 | relative_offset | |
3297 | = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2); | |
3298 | ||
3299 | /* Fill in the entry in the procedure linkage table. */ | |
0e1862bb | 3300 | if (!bfd_link_pic (info)) |
470b557a AK |
3301 | { |
3302 | memcpy (plt->contents + iplt_offset, elf_s390_plt_entry, | |
3303 | PLT_ENTRY_SIZE); | |
3304 | ||
3305 | /* Adjust jump to the first plt entry. */ | |
3306 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3307 | plt->contents + iplt_offset + 20); | |
3308 | ||
3309 | /* Push the GOT offset field. */ | |
3310 | bfd_put_32 (output_bfd, | |
3311 | (gotplt->output_section->vma | |
3312 | + got_offset), | |
3313 | plt->contents + iplt_offset + 24); | |
3314 | } | |
3315 | else if (got_offset < 4096) | |
3316 | { | |
3317 | /* The GOT offset is small enough to be used directly as | |
3318 | displacement. */ | |
3319 | memcpy (plt->contents + iplt_offset, | |
3320 | elf_s390_plt_pic12_entry, | |
3321 | PLT_ENTRY_SIZE); | |
3322 | ||
3323 | /* Put in the GOT offset as displacement value. The 0xc000 | |
3324 | value comes from the first word of the plt entry. Look | |
3325 | at the elf_s390_plt_pic16_entry content. */ | |
3326 | bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset, | |
3327 | plt->contents + iplt_offset + 2); | |
3328 | ||
3329 | /* Adjust the jump to the first plt entry. */ | |
3330 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3331 | plt->contents + iplt_offset + 20); | |
3332 | } | |
3333 | else if (got_offset < 32768) | |
3334 | { | |
3335 | /* The GOT offset is too big for a displacement but small | |
3336 | enough to be a signed 16 bit immediate value as it can be | |
3337 | used in an lhi instruction. */ | |
3338 | memcpy (plt->contents + iplt_offset, | |
3339 | elf_s390_plt_pic16_entry, | |
3340 | PLT_ENTRY_SIZE); | |
3341 | ||
3342 | /* Put in the GOT offset for the lhi instruction. */ | |
3343 | bfd_put_16 (output_bfd, (bfd_vma)got_offset, | |
3344 | plt->contents + iplt_offset + 2); | |
3345 | ||
3346 | /* Adjust the jump to the first plt entry. */ | |
3347 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3348 | plt->contents + iplt_offset + 20); | |
3349 | } | |
3350 | else | |
3351 | { | |
3352 | memcpy (plt->contents + iplt_offset, | |
3353 | elf_s390_plt_pic_entry, | |
3354 | PLT_ENTRY_SIZE); | |
3355 | ||
3356 | /* Adjust the jump to the first plt entry. */ | |
3357 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3358 | plt->contents + iplt_offset + 20); | |
3359 | ||
3360 | /* Push the GOT offset field. */ | |
3361 | bfd_put_32 (output_bfd, got_offset, | |
3362 | plt->contents + iplt_offset + 24); | |
3363 | } | |
3364 | /* Insert offset into reloc. table here. */ | |
3365 | bfd_put_32 (output_bfd, relplt->output_offset + | |
3366 | iplt_index * RELA_ENTRY_SIZE, | |
3367 | plt->contents + iplt_offset + 28); | |
3368 | ||
3369 | /* Fill in the entry in the global offset table. | |
3370 | Points to instruction after GOT offset. */ | |
3371 | bfd_put_32 (output_bfd, | |
3372 | (plt->output_section->vma | |
3373 | + plt->output_offset | |
3374 | + iplt_offset | |
3375 | + 12), | |
3376 | gotplt->contents + igotiplt_offset); | |
3377 | ||
3378 | /* Fill in the entry in the .rela.plt section. */ | |
3379 | rela.r_offset = gotplt->output_section->vma + got_offset; | |
3380 | ||
3381 | if (!h | |
3382 | || h->dynindx == -1 | |
0e1862bb | 3383 | || ((bfd_link_executable (info) |
470b557a AK |
3384 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
3385 | && h->def_regular)) | |
3386 | { | |
3387 | /* The symbol can be locally resolved. */ | |
3388 | rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE); | |
3389 | rela.r_addend = resolver_address; | |
3390 | } | |
3391 | else | |
3392 | { | |
3393 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3394 | rela.r_addend = 0; | |
3395 | } | |
3396 | ||
3397 | loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE; | |
3398 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
3399 | } | |
3400 | ||
a85d7ed0 NC |
3401 | /* Finish up dynamic symbol handling. We set the contents of various |
3402 | dynamic sections here. */ | |
3403 | ||
b34976b6 | 3404 | static bfd_boolean |
2c3fc389 NC |
3405 | elf_s390_finish_dynamic_symbol (bfd *output_bfd, |
3406 | struct bfd_link_info *info, | |
3407 | struct elf_link_hash_entry *h, | |
3408 | Elf_Internal_Sym *sym) | |
a85d7ed0 | 3409 | { |
0451c93c | 3410 | struct elf_s390_link_hash_table *htab; |
470b557a | 3411 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h; |
ec338859 | 3412 | |
0451c93c | 3413 | htab = elf_s390_hash_table (info); |
ec338859 | 3414 | |
a85d7ed0 NC |
3415 | if (h->plt.offset != (bfd_vma) -1) |
3416 | { | |
0451c93c MS |
3417 | bfd_vma plt_index; |
3418 | bfd_vma got_offset; | |
a85d7ed0 | 3419 | Elf_Internal_Rela rela; |
947216bf | 3420 | bfd_byte *loc; |
a85d7ed0 | 3421 | bfd_vma relative_offset; |
ec338859 | 3422 | |
a85d7ed0 | 3423 | /* This symbol has an entry in the procedure linkage table. Set |
26e41594 | 3424 | it up. */ |
0a511368 | 3425 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) |
0451c93c | 3426 | { |
0a511368 AK |
3427 | elf_s390_finish_ifunc_symbol (output_bfd, info, h, |
3428 | htab, h->plt.offset, | |
3429 | eh->ifunc_resolver_address + | |
3430 | eh->ifunc_resolver_section->output_offset + | |
3431 | eh->ifunc_resolver_section->output_section->vma); | |
3432 | /* Do not return yet. Handling of explicit GOT slots of | |
3433 | IFUNC symbols is below. */ | |
0451c93c | 3434 | } |
a85d7ed0 | 3435 | else |
0451c93c | 3436 | { |
470b557a AK |
3437 | if (h->dynindx == -1 |
3438 | || htab->elf.splt == NULL | |
3439 | || htab->elf.sgotplt == NULL | |
3440 | || htab->elf.srelplt == NULL) | |
3441 | abort (); | |
9aa17453 | 3442 | |
470b557a AK |
3443 | /* Calc. index no. |
3444 | Current offset - size first entry / entry size. */ | |
3445 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
9aa17453 | 3446 | |
470b557a AK |
3447 | /* Offset in GOT is PLT index plus GOT headers(3) times 4, |
3448 | addr & GOT addr. */ | |
3449 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
a85d7ed0 | 3450 | |
470b557a AK |
3451 | /* S390 uses halfwords for relative branch calc! */ |
3452 | relative_offset = - ((PLT_FIRST_ENTRY_SIZE + | |
3453 | (PLT_ENTRY_SIZE * plt_index) + 18) / 2); | |
3454 | /* If offset is > 32768, branch to a previous branch | |
3455 | 390 can only handle +-64 K jumps. */ | |
3456 | if ( -32768 > (int) relative_offset ) | |
3457 | relative_offset | |
3458 | = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2); | |
ec338859 | 3459 | |
470b557a | 3460 | /* Fill in the entry in the procedure linkage table. */ |
0e1862bb | 3461 | if (!bfd_link_pic (info)) |
470b557a AK |
3462 | { |
3463 | memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry, | |
3464 | PLT_ENTRY_SIZE); | |
3465 | ||
3466 | /* Adjust jump to the first plt entry. */ | |
3467 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3468 | htab->elf.splt->contents + h->plt.offset + 20); | |
3469 | ||
3470 | /* Push the GOT offset field. */ | |
3471 | bfd_put_32 (output_bfd, | |
3472 | (htab->elf.sgotplt->output_section->vma | |
3473 | + htab->elf.sgotplt->output_offset | |
3474 | + got_offset), | |
3475 | htab->elf.splt->contents + h->plt.offset + 24); | |
3476 | } | |
3477 | else if (got_offset < 4096) | |
3478 | { | |
3479 | /* The GOT offset is small enough to be used directly as | |
3480 | displacement. */ | |
3481 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3482 | elf_s390_plt_pic12_entry, | |
3483 | PLT_ENTRY_SIZE); | |
3484 | ||
3485 | /* Put in the GOT offset as displacement value. The 0xc000 | |
3486 | value comes from the first word of the plt entry. Look | |
3b67f094 | 3487 | at the elf_s390_plt_pic12_entry content. */ |
470b557a AK |
3488 | bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset, |
3489 | htab->elf.splt->contents + h->plt.offset + 2); | |
3490 | ||
3491 | /* Adjust the jump to the first plt entry. */ | |
3492 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3493 | htab->elf.splt->contents + h->plt.offset + 20); | |
3494 | } | |
3495 | else if (got_offset < 32768) | |
3496 | { | |
3497 | /* The GOT offset is too big for a displacement but small | |
3498 | enough to be a signed 16 bit immediate value as it can be | |
3499 | used in an lhi instruction. */ | |
3500 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3501 | elf_s390_plt_pic16_entry, | |
3502 | PLT_ENTRY_SIZE); | |
3503 | ||
3504 | /* Put in the GOT offset for the lhi instruction. */ | |
3505 | bfd_put_16 (output_bfd, (bfd_vma)got_offset, | |
3506 | htab->elf.splt->contents + h->plt.offset + 2); | |
3507 | ||
3508 | /* Adjust the jump to the first plt entry. */ | |
3509 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3510 | htab->elf.splt->contents + h->plt.offset + 20); | |
3511 | } | |
3512 | else | |
3513 | { | |
3514 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3515 | elf_s390_plt_pic_entry, | |
3516 | PLT_ENTRY_SIZE); | |
3517 | ||
3518 | /* Adjust the jump to the first plt entry. */ | |
3519 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3520 | htab->elf.splt->contents + h->plt.offset + 20); | |
3521 | ||
3522 | /* Push the GOT offset field. */ | |
3523 | bfd_put_32 (output_bfd, got_offset, | |
3524 | htab->elf.splt->contents + h->plt.offset + 24); | |
3525 | } | |
3526 | /* Insert offset into reloc. table here. */ | |
3527 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
3528 | htab->elf.splt->contents + h->plt.offset + 28); | |
3529 | ||
3530 | /* Fill in the entry in the global offset table. | |
3531 | Points to instruction after GOT offset. */ | |
3532 | bfd_put_32 (output_bfd, | |
3533 | (htab->elf.splt->output_section->vma | |
3534 | + htab->elf.splt->output_offset | |
3535 | + h->plt.offset | |
3536 | + 12), | |
3537 | htab->elf.sgotplt->contents + got_offset); | |
3538 | ||
3539 | /* Fill in the entry in the .rela.plt section. */ | |
3540 | rela.r_offset = (htab->elf.sgotplt->output_section->vma | |
3541 | + htab->elf.sgotplt->output_offset | |
3542 | + got_offset); | |
3543 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3544 | rela.r_addend = 0; | |
3545 | loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela); | |
3546 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
3547 | ||
3548 | if (!h->def_regular) | |
3549 | { | |
3550 | /* Mark the symbol as undefined, rather than as defined in | |
3551 | the .plt section. Leave the value alone. This is a clue | |
3552 | for the dynamic linker, to make function pointer | |
3553 | comparisons work between an application and shared | |
3554 | library. */ | |
3555 | sym->st_shndx = SHN_UNDEF; | |
3556 | } | |
a85d7ed0 NC |
3557 | } |
3558 | } | |
ec338859 | 3559 | |
69fc87f1 MS |
3560 | if (h->got.offset != (bfd_vma) -1 |
3561 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD | |
3562 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE | |
3563 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT) | |
a85d7ed0 | 3564 | { |
a85d7ed0 | 3565 | Elf_Internal_Rela rela; |
947216bf | 3566 | bfd_byte *loc; |
a85d7ed0 NC |
3567 | |
3568 | /* This symbol has an entry in the global offset table. Set it | |
26e41594 | 3569 | up. */ |
a85d7ed0 | 3570 | |
f41345a7 | 3571 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
0451c93c | 3572 | abort (); |
a85d7ed0 | 3573 | |
f41345a7 AK |
3574 | rela.r_offset = (htab->elf.sgot->output_section->vma |
3575 | + htab->elf.sgot->output_offset | |
dc810e39 | 3576 | + (h->got.offset &~ (bfd_vma) 1)); |
a85d7ed0 NC |
3577 | |
3578 | /* If this is a static link, or it is a -Bsymbolic link and the | |
3579 | symbol is defined locally or was forced to be local because | |
3580 | of a version file, we just want to emit a RELATIVE reloc. | |
3581 | The entry in the global offset table will already have been | |
3582 | initialized in the relocate_section function. */ | |
470b557a AK |
3583 | if (h->def_regular && s390_is_ifunc_symbol_p (h)) |
3584 | { | |
0e1862bb | 3585 | if (bfd_link_pic (info)) |
470b557a AK |
3586 | { |
3587 | /* An explicit GOT slot usage needs GLOB_DAT. If the | |
3588 | symbol references local the implicit got.iplt slot | |
3589 | will be used and the IRELATIVE reloc has been created | |
3590 | above. */ | |
3591 | goto do_glob_dat; | |
3592 | } | |
3593 | else | |
3594 | { | |
3595 | /* For non-shared objects explicit GOT slots must be | |
3596 | filled with the PLT slot address for pointer | |
3597 | equality reasons. */ | |
3598 | bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma | |
3599 | + htab->elf.iplt->output_offset | |
3600 | + h->plt.offset), | |
3601 | htab->elf.sgot->contents + h->got.offset); | |
3602 | return TRUE; | |
3603 | } | |
3604 | } | |
0e1862bb | 3605 | else if (bfd_link_pic (info) |
ceada896 | 3606 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
0451c93c | 3607 | { |
470b557a AK |
3608 | /* If this is a static link, or it is a -Bsymbolic link and |
3609 | the symbol is defined locally or was forced to be local | |
3610 | because of a version file, we just want to emit a | |
3611 | RELATIVE reloc. The entry in the global offset table | |
3612 | will already have been initialized in the | |
3613 | relocate_section function. */ | |
8170f769 | 3614 | if (!(h->def_regular || ELF_COMMON_DEF_P (h))) |
8c21ca21 | 3615 | return FALSE; |
0451c93c MS |
3616 | BFD_ASSERT((h->got.offset & 1) != 0); |
3617 | rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
3618 | rela.r_addend = (h->root.u.def.value | |
26e41594 AM |
3619 | + h->root.u.def.section->output_section->vma |
3620 | + h->root.u.def.section->output_offset); | |
3621 | } | |
a85d7ed0 NC |
3622 | else |
3623 | { | |
3624 | BFD_ASSERT((h->got.offset & 1) == 0); | |
470b557a | 3625 | do_glob_dat: |
f41345a7 | 3626 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset); |
a85d7ed0 | 3627 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT); |
26e41594 AM |
3628 | rela.r_addend = 0; |
3629 | } | |
a85d7ed0 | 3630 | |
f41345a7 AK |
3631 | loc = htab->elf.srelgot->contents; |
3632 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 3633 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3634 | } |
3635 | ||
f5385ebf | 3636 | if (h->needs_copy) |
a85d7ed0 | 3637 | { |
a85d7ed0 | 3638 | Elf_Internal_Rela rela; |
5474d94f | 3639 | asection *s; |
947216bf | 3640 | bfd_byte *loc; |
a85d7ed0 NC |
3641 | |
3642 | /* This symbols needs a copy reloc. Set it up. */ | |
3643 | ||
0451c93c MS |
3644 | if (h->dynindx == -1 |
3645 | || (h->root.type != bfd_link_hash_defined | |
3646 | && h->root.type != bfd_link_hash_defweak) | |
5474d94f AM |
3647 | || htab->elf.srelbss == NULL |
3648 | || htab->elf.sreldynrelro == NULL) | |
0451c93c | 3649 | abort (); |
a85d7ed0 NC |
3650 | |
3651 | rela.r_offset = (h->root.u.def.value | |
3652 | + h->root.u.def.section->output_section->vma | |
3653 | + h->root.u.def.section->output_offset); | |
3654 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY); | |
3655 | rela.r_addend = 0; | |
afbf7e8e | 3656 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
3657 | s = htab->elf.sreldynrelro; |
3658 | else | |
3659 | s = htab->elf.srelbss; | |
3660 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 3661 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3662 | } |
3663 | ||
3664 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 3665 | if (h == htab->elf.hdynamic |
22edb2f1 RS |
3666 | || h == htab->elf.hgot |
3667 | || h == htab->elf.hplt) | |
a85d7ed0 NC |
3668 | sym->st_shndx = SHN_ABS; |
3669 | ||
b34976b6 | 3670 | return TRUE; |
a85d7ed0 NC |
3671 | } |
3672 | ||
0451c93c MS |
3673 | /* Used to decide how to sort relocs in an optimal manner for the |
3674 | dynamic linker, before writing them out. */ | |
3675 | ||
3676 | static enum elf_reloc_type_class | |
7e612e98 AM |
3677 | elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
3678 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
3679 | const Elf_Internal_Rela *rela) | |
0451c93c | 3680 | { |
0f042c67 AK |
3681 | bfd *abfd = info->output_bfd; |
3682 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3683 | struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info); | |
3684 | unsigned long r_symndx = ELF32_R_SYM (rela->r_info); | |
3685 | Elf_Internal_Sym sym; | |
3686 | ||
3687 | if (htab->elf.dynsym == NULL | |
3688 | || !bed->s->swap_symbol_in (abfd, | |
3689 | (htab->elf.dynsym->contents | |
3690 | + r_symndx * bed->s->sizeof_sym), | |
3691 | 0, &sym)) | |
3692 | abort (); | |
3693 | ||
3694 | /* Check relocation against STT_GNU_IFUNC symbol. */ | |
3695 | if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
3696 | return reloc_class_ifunc; | |
3697 | ||
0451c93c MS |
3698 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
3699 | { | |
3700 | case R_390_RELATIVE: | |
3701 | return reloc_class_relative; | |
3702 | case R_390_JMP_SLOT: | |
3703 | return reloc_class_plt; | |
3704 | case R_390_COPY: | |
3705 | return reloc_class_copy; | |
3706 | default: | |
3707 | return reloc_class_normal; | |
3708 | } | |
3709 | } | |
3710 | ||
a85d7ed0 NC |
3711 | /* Finish up the dynamic sections. */ |
3712 | ||
b34976b6 | 3713 | static bfd_boolean |
2c3fc389 NC |
3714 | elf_s390_finish_dynamic_sections (bfd *output_bfd, |
3715 | struct bfd_link_info *info) | |
a85d7ed0 | 3716 | { |
0451c93c | 3717 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
3718 | bfd *dynobj; |
3719 | asection *sdyn; | |
470b557a AK |
3720 | bfd *ibfd; |
3721 | unsigned int i; | |
a85d7ed0 | 3722 | |
0451c93c MS |
3723 | htab = elf_s390_hash_table (info); |
3724 | dynobj = htab->elf.dynobj; | |
3d4d4302 | 3725 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
a85d7ed0 | 3726 | |
0451c93c | 3727 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 | 3728 | { |
a85d7ed0 NC |
3729 | Elf32_External_Dyn *dyncon, *dynconend; |
3730 | ||
f41345a7 | 3731 | if (sdyn == NULL || htab->elf.sgot == NULL) |
0451c93c | 3732 | abort (); |
a85d7ed0 NC |
3733 | |
3734 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 3735 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
a85d7ed0 NC |
3736 | for (; dyncon < dynconend; dyncon++) |
3737 | { | |
3738 | Elf_Internal_Dyn dyn; | |
a85d7ed0 | 3739 | asection *s; |
ec338859 | 3740 | |
a85d7ed0 | 3741 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
ec338859 | 3742 | |
a85d7ed0 NC |
3743 | switch (dyn.d_tag) |
3744 | { | |
3745 | default: | |
0451c93c | 3746 | continue; |
ec338859 | 3747 | |
a85d7ed0 | 3748 | case DT_PLTGOT: |
4ade44b7 AM |
3749 | s = htab->elf.sgotplt; |
3750 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
0451c93c | 3751 | break; |
ec338859 | 3752 | |
a85d7ed0 | 3753 | case DT_JMPREL: |
4ade44b7 AM |
3754 | s = htab->elf.srelplt; |
3755 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
a85d7ed0 NC |
3756 | break; |
3757 | ||
3758 | case DT_PLTRELSZ: | |
79c12fae AK |
3759 | dyn.d_un.d_val = htab->elf.srelplt->size; |
3760 | if (htab->elf.irelplt) | |
3761 | dyn.d_un.d_val += htab->elf.irelplt->size; | |
a85d7ed0 NC |
3762 | break; |
3763 | } | |
0451c93c MS |
3764 | |
3765 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
a85d7ed0 NC |
3766 | } |
3767 | ||
3768 | /* Fill in the special first entry in the procedure linkage table. */ | |
f41345a7 | 3769 | if (htab->elf.splt && htab->elf.splt->size > 0) |
a85d7ed0 | 3770 | { |
f41345a7 | 3771 | memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE); |
0e1862bb | 3772 | if (bfd_link_pic (info)) |
0451c93c | 3773 | { |
f41345a7 | 3774 | memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry, |
9aa17453 AK |
3775 | PLT_FIRST_ENTRY_SIZE); |
3776 | } | |
26e41594 | 3777 | else |
9aa17453 | 3778 | { |
f41345a7 | 3779 | memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry, |
9aa17453 | 3780 | PLT_FIRST_ENTRY_SIZE); |
26e41594 | 3781 | bfd_put_32 (output_bfd, |
f41345a7 AK |
3782 | htab->elf.sgotplt->output_section->vma |
3783 | + htab->elf.sgotplt->output_offset, | |
3784 | htab->elf.splt->contents + 24); | |
ceada896 | 3785 | } |
f41345a7 | 3786 | elf_section_data (htab->elf.splt->output_section) |
0451c93c | 3787 | ->this_hdr.sh_entsize = 4; |
a85d7ed0 NC |
3788 | } |
3789 | ||
3790 | } | |
3791 | ||
f41345a7 | 3792 | if (htab->elf.sgotplt) |
a85d7ed0 | 3793 | { |
0451c93c | 3794 | /* Fill in the first three entries in the global offset table. */ |
f41345a7 | 3795 | if (htab->elf.sgotplt->size > 0) |
0451c93c MS |
3796 | { |
3797 | bfd_put_32 (output_bfd, | |
3798 | (sdyn == NULL ? (bfd_vma) 0 | |
3799 | : sdyn->output_section->vma + sdyn->output_offset), | |
f41345a7 | 3800 | htab->elf.sgotplt->contents); |
0451c93c | 3801 | /* One entry for shared object struct ptr. */ |
f41345a7 | 3802 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4); |
0451c93c | 3803 | /* One entry for _dl_runtime_resolve. */ |
f41345a7 | 3804 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8); |
0451c93c | 3805 | } |
a85d7ed0 | 3806 | |
f41345a7 | 3807 | elf_section_data (htab->elf.sgotplt->output_section) |
0451c93c MS |
3808 | ->this_hdr.sh_entsize = 4; |
3809 | } | |
470b557a | 3810 | /* Finish dynamic symbol for local IFUNC symbols. */ |
c72f2fb2 | 3811 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
470b557a AK |
3812 | { |
3813 | struct plt_entry *local_plt; | |
3814 | Elf_Internal_Sym *isym; | |
3815 | Elf_Internal_Shdr *symtab_hdr; | |
3816 | ||
3817 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
3818 | ||
1ef692ea AK |
3819 | if (!is_s390_elf (ibfd)) |
3820 | continue; | |
3821 | ||
470b557a AK |
3822 | local_plt = elf_s390_local_plt (ibfd); |
3823 | if (local_plt != NULL) | |
3824 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
3825 | { | |
3826 | if (local_plt[i].plt.offset != (bfd_vma) -1) | |
3827 | { | |
3828 | asection *sec = local_plt[i].sec; | |
3829 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i); | |
3830 | if (isym == NULL) | |
3831 | return FALSE; | |
3832 | ||
3833 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
3834 | elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab, | |
3835 | local_plt[i].plt.offset, | |
3836 | isym->st_value | |
3837 | + sec->output_section->vma | |
3838 | + sec->output_offset); | |
3839 | ||
3840 | } | |
3841 | } | |
3842 | } | |
b34976b6 | 3843 | return TRUE; |
a85d7ed0 | 3844 | } |
e3e9290d AA |
3845 | \f |
3846 | /* Support for core dump NOTE sections. */ | |
a85d7ed0 | 3847 | |
b34976b6 | 3848 | static bfd_boolean |
2c3fc389 | 3849 | elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note) |
979f4a38 NC |
3850 | { |
3851 | int offset; | |
eea6121a | 3852 | unsigned int size; |
979f4a38 NC |
3853 | |
3854 | switch (note->descsz) | |
3855 | { | |
ceada896 AA |
3856 | default: |
3857 | return FALSE; | |
979f4a38 | 3858 | |
ceada896 AA |
3859 | case 224: /* S/390 Linux. */ |
3860 | /* pr_cursig */ | |
3861 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
979f4a38 | 3862 | |
ceada896 AA |
3863 | /* pr_pid */ |
3864 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); | |
979f4a38 | 3865 | |
ceada896 AA |
3866 | /* pr_reg */ |
3867 | offset = 72; | |
3868 | size = 144; | |
3869 | break; | |
979f4a38 NC |
3870 | } |
3871 | ||
3872 | /* Make a ".reg/999" section. */ | |
3873 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 3874 | size, note->descpos + offset); |
979f4a38 NC |
3875 | } |
3876 | ||
e3e9290d AA |
3877 | static bfd_boolean |
3878 | elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
3879 | { | |
3880 | switch (note->descsz) | |
3881 | { | |
3882 | default: | |
3883 | return FALSE; | |
3884 | ||
3885 | case 124: /* sizeof(struct elf_prpsinfo) on s390 */ | |
3886 | elf_tdata (abfd)->core->pid | |
3887 | = bfd_get_32 (abfd, note->descdata + 12); | |
3888 | elf_tdata (abfd)->core->program | |
3889 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
3890 | elf_tdata (abfd)->core->command | |
3891 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
3892 | break; | |
3893 | } | |
3894 | ||
3895 | /* Note that for some reason, a spurious space is tacked | |
3896 | onto the end of the args in some (at least one anyway) | |
3897 | implementations, so strip it off if it exists. */ | |
3898 | ||
3899 | { | |
3900 | char *command = elf_tdata (abfd)->core->command; | |
3901 | int n = strlen (command); | |
3902 | ||
3903 | if (0 < n && command[n - 1] == ' ') | |
3904 | command[n - 1] = '\0'; | |
3905 | } | |
3906 | ||
3907 | return TRUE; | |
3908 | } | |
3909 | ||
3910 | static char * | |
3911 | elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz, | |
3912 | int note_type, ...) | |
3913 | { | |
3914 | va_list ap; | |
3915 | ||
3916 | switch (note_type) | |
3917 | { | |
3918 | default: | |
3919 | return NULL; | |
3920 | ||
3921 | case NT_PRPSINFO: | |
3922 | { | |
602f1657 | 3923 | char data[124] ATTRIBUTE_NONSTRING = { 0 }; |
e3e9290d AA |
3924 | const char *fname, *psargs; |
3925 | ||
3926 | va_start (ap, note_type); | |
3927 | fname = va_arg (ap, const char *); | |
3928 | psargs = va_arg (ap, const char *); | |
3929 | va_end (ap); | |
3930 | ||
3931 | strncpy (data + 28, fname, 16); | |
898ade12 | 3932 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 3933 | DIAGNOSTIC_PUSH; |
be3e27bb | 3934 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
3935 | -Wstringop-truncation: |
3936 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
3937 | */ | |
95da9854 L |
3938 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
3939 | #endif | |
e3e9290d | 3940 | strncpy (data + 44, psargs, 80); |
898ade12 | 3941 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 3942 | DIAGNOSTIC_POP; |
fe75810f | 3943 | #endif |
e3e9290d AA |
3944 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
3945 | &data, sizeof (data)); | |
3946 | } | |
3947 | ||
3948 | case NT_PRSTATUS: | |
3949 | { | |
3950 | char data[224] = { 0 }; | |
3951 | long pid; | |
3952 | int cursig; | |
3953 | const void *gregs; | |
3954 | ||
3955 | va_start (ap, note_type); | |
3956 | pid = va_arg (ap, long); | |
3957 | cursig = va_arg (ap, int); | |
3958 | gregs = va_arg (ap, const void *); | |
3959 | va_end (ap); | |
3960 | ||
3961 | bfd_put_16 (abfd, cursig, data + 12); | |
3962 | bfd_put_32 (abfd, pid, data + 24); | |
3963 | memcpy (data + 72, gregs, 144); | |
3964 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, | |
3965 | &data, sizeof (data)); | |
3966 | } | |
3967 | } | |
3968 | /* NOTREACHED */ | |
3969 | } | |
3970 | \f | |
4c45e5c9 JJ |
3971 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
3972 | or (bfd_vma) -1 if it should not be included. */ | |
3973 | ||
3974 | static bfd_vma | |
3975 | elf_s390_plt_sym_val (bfd_vma i, const asection *plt, | |
3976 | const arelent *rel ATTRIBUTE_UNUSED) | |
3977 | { | |
3978 | return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE; | |
3979 | } | |
3980 | ||
643f7afb AK |
3981 | /* Merge backend specific data from an object file to the output |
3982 | object file when linking. */ | |
3983 | ||
55786da2 | 3984 | static bfd_boolean |
50e03d47 | 3985 | elf32_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
55786da2 | 3986 | { |
50e03d47 AM |
3987 | bfd *obfd = info->output_bfd; |
3988 | ||
643f7afb AK |
3989 | if (!is_s390_elf (ibfd) || !is_s390_elf (obfd)) |
3990 | return TRUE; | |
3991 | ||
50e03d47 | 3992 | if (!elf_s390_merge_obj_attributes (ibfd, info)) |
643f7afb AK |
3993 | return FALSE; |
3994 | ||
55786da2 AK |
3995 | elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags; |
3996 | return TRUE; | |
3997 | } | |
3998 | ||
4c45e5c9 | 3999 | |
6d00b590 | 4000 | #define TARGET_BIG_SYM s390_elf32_vec |
a85d7ed0 NC |
4001 | #define TARGET_BIG_NAME "elf32-s390" |
4002 | #define ELF_ARCH bfd_arch_s390 | |
ae95ffa6 | 4003 | #define ELF_TARGET_ID S390_ELF_DATA |
a85d7ed0 NC |
4004 | #define ELF_MACHINE_CODE EM_S390 |
4005 | #define ELF_MACHINE_ALT1 EM_S390_OLD | |
4006 | #define ELF_MAXPAGESIZE 0x1000 | |
4007 | ||
4008 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4009 | #define elf_backend_can_refcount 1 |
a85d7ed0 NC |
4010 | #define elf_backend_want_got_plt 1 |
4011 | #define elf_backend_plt_readonly 1 | |
4012 | #define elf_backend_want_plt_sym 0 | |
4013 | #define elf_backend_got_header_size 12 | |
5474d94f | 4014 | #define elf_backend_want_dynrelro 1 |
b491616a | 4015 | #define elf_backend_rela_normal 1 |
a85d7ed0 | 4016 | |
26e41594 | 4017 | #define elf_info_to_howto elf_s390_info_to_howto |
a85d7ed0 | 4018 | |
a85d7ed0 NC |
4019 | #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name |
4020 | #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create | |
4021 | #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup | |
157090f7 | 4022 | #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup |
a85d7ed0 | 4023 | |
55786da2 AK |
4024 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data |
4025 | ||
a85d7ed0 | 4026 | #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol |
26e41594 | 4027 | #define elf_backend_check_relocs elf_s390_check_relocs |
0451c93c | 4028 | #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol |
9d19e4fd | 4029 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
a85d7ed0 NC |
4030 | #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections |
4031 | #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol | |
26e41594 | 4032 | #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook |
0451c93c | 4033 | #define elf_backend_reloc_type_class elf_s390_reloc_type_class |
26e41594 | 4034 | #define elf_backend_relocate_section elf_s390_relocate_section |
a85d7ed0 | 4035 | #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections |
74541ad4 | 4036 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
979f4a38 | 4037 | #define elf_backend_grok_prstatus elf_s390_grok_prstatus |
e3e9290d AA |
4038 | #define elf_backend_grok_psinfo elf_s390_grok_psinfo |
4039 | #define elf_backend_write_core_note elf_s390_write_core_note | |
4c45e5c9 | 4040 | #define elf_backend_plt_sym_val elf_s390_plt_sym_val |
07d6d2b8 | 4041 | #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p |
a85d7ed0 | 4042 | |
69fc87f1 | 4043 | #define bfd_elf32_mkobject elf_s390_mkobject |
26e41594 | 4044 | #define elf_backend_object_p elf_s390_object_p |
a85d7ed0 | 4045 | |
a2f63b2e MR |
4046 | #define elf_backend_linux_prpsinfo32_ugid16 TRUE |
4047 | ||
a85d7ed0 | 4048 | #include "elf32-target.h" |