Commit | Line | Data |
---|---|---|
a85d7ed0 | 1 | /* IBM S/390-specific support for 32-bit ELF |
250d07de | 2 | Copyright (C) 2000-2021 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 */ |
0a1b45a2 | 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 */ | |
0a1b45a2 | 50 | false, /* partial_inplace */ |
a85d7ed0 NC |
51 | 0, /* src_mask */ |
52 | 0, /* dst_mask */ | |
0a1b45a2 AM |
53 | false), /* pcrel_offset */ |
54 | ||
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), | |
63 | HOWTO(R_390_PC32, 0, 2, 32, true, 0, complain_overflow_bitfield, | |
64 | bfd_elf_generic_reloc, "R_390_PC32", false, 0,0xffffffff, true), | |
65 | HOWTO(R_390_GOT12, 0, 1, 12, false, 0, complain_overflow_bitfield, | |
66 | bfd_elf_generic_reloc, "R_390_GOT12", false, 0,0x00000fff, false), | |
67 | HOWTO(R_390_GOT32, 0, 2, 32, false, 0, complain_overflow_bitfield, | |
68 | bfd_elf_generic_reloc, "R_390_GOT32", false, 0,0xffffffff, false), | |
69 | HOWTO(R_390_PLT32, 0, 2, 32, true, 0, complain_overflow_bitfield, | |
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, | |
74 | bfd_elf_generic_reloc, "R_390_GLOB_DAT", false, 0,0xffffffff, false), | |
75 | HOWTO(R_390_JMP_SLOT, 0, 2, 32, false, 0, complain_overflow_bitfield, | |
76 | bfd_elf_generic_reloc, "R_390_JMP_SLOT", false, 0,0xffffffff, false), | |
77 | HOWTO(R_390_RELATIVE, 0, 2, 32, true, 0, complain_overflow_bitfield, | |
78 | bfd_elf_generic_reloc, "R_390_RELATIVE", false, 0,0xffffffff, false), | |
79 | HOWTO(R_390_GOTOFF32, 0, 2, 32, false, 0, complain_overflow_bitfield, | |
80 | bfd_elf_generic_reloc, "R_390_GOTOFF32", false, 0,0xffffffff, false), | |
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, | |
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, | |
92 | bfd_elf_generic_reloc, "R_390_PC32DBL", false, 0,0xffffffff, true), | |
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), | |
95 | HOWTO(R_390_GOTPCDBL, 1, 2, 32, true, 0, complain_overflow_bitfield, | |
96 | bfd_elf_generic_reloc, "R_390_GOTPCDBL", false, 0,0xffffffff, true), | |
5236c819 MS |
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. */ | |
0a1b45a2 AM |
101 | HOWTO(R_390_GOTENT, 1, 2, 32, true, 0, complain_overflow_bitfield, |
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, | |
104 | bfd_elf_generic_reloc, "R_390_GOTOFF16", false, 0,0x0000ffff, false), | |
5236c819 | 105 | EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */ |
0a1b45a2 AM |
106 | HOWTO(R_390_GOTPLT12, 0, 1, 12, false, 0, complain_overflow_dont, |
107 | bfd_elf_generic_reloc, "R_390_GOTPLT12", false, 0,0x00000fff, false), | |
108 | HOWTO(R_390_GOTPLT16, 0, 1, 16, false, 0, complain_overflow_bitfield, | |
109 | bfd_elf_generic_reloc, "R_390_GOTPLT16", false, 0,0x0000ffff, false), | |
110 | HOWTO(R_390_GOTPLT32, 0, 2, 32, false, 0, complain_overflow_bitfield, | |
111 | bfd_elf_generic_reloc, "R_390_GOTPLT32", false, 0,0xffffffff, false), | |
5236c819 | 112 | EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */ |
0a1b45a2 AM |
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), | |
115 | HOWTO(R_390_PLTOFF16, 0, 1, 16, false, 0, complain_overflow_bitfield, | |
116 | bfd_elf_generic_reloc, "R_390_PLTOFF16", false, 0,0x0000ffff, false), | |
117 | HOWTO(R_390_PLTOFF32, 0, 2, 32, false, 0, complain_overflow_bitfield, | |
118 | bfd_elf_generic_reloc, "R_390_PLTOFF32", false, 0,0xffffffff, false), | |
5236c819 | 119 | EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */ |
0a1b45a2 AM |
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), | |
69fc87f1 | 128 | EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */ |
0a1b45a2 AM |
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), | |
69fc87f1 | 133 | EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */ |
0a1b45a2 AM |
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), | |
69fc87f1 | 136 | EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */ |
0a1b45a2 AM |
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), | |
69fc87f1 | 139 | EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */ |
0a1b45a2 AM |
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), | |
69fc87f1 | 144 | EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */ |
0a1b45a2 AM |
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), | |
69fc87f1 | 147 | EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */ |
0a1b45a2 AM |
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), | |
154 | HOWTO(R_390_20, 0, 2, 20, false, 8, complain_overflow_dont, | |
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), | |
158 | HOWTO(R_390_GOTPLT20, 0, 2, 20, false, 8, complain_overflow_dont, | |
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), | |
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), | |
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), | |
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), | |
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), | |
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 = | |
0a1b45a2 | 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 = |
0a1b45a2 | 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 | ||
0a1b45a2 | 326 | static bool |
f3185997 | 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 | 349 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 350 | return false; |
d0fb9a8d JJ |
351 | } |
352 | cache_ptr->howto = &elf_howto_table[r_type]; | |
dc810e39 | 353 | } |
f3185997 | 354 | |
0a1b45a2 | 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 | ||
0a1b45a2 | 424 | static bool |
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')) | |
0a1b45a2 | 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 | |
0a1b45a2 | 721 | static bool |
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 | ||
0a1b45a2 | 728 | static bool |
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; | |
0451c93c | 749 | }; |
a85d7ed0 NC |
750 | |
751 | /* Get the s390 ELF linker hash table from a link_info structure. */ | |
752 | ||
753 | #define elf_s390_hash_table(p) \ | |
0f55320b AM |
754 | ((is_elf_hash_table ((p)->hash) \ |
755 | && elf_hash_table_id (elf_hash_table (p)) == S390_ELF_DATA) \ | |
756 | ? (struct elf_s390_link_hash_table *) (p)->hash : NULL) | |
a85d7ed0 | 757 | |
470b557a AK |
758 | #undef ELF64 |
759 | #include "elf-s390-common.c" | |
760 | ||
a85d7ed0 NC |
761 | /* Create an entry in an s390 ELF linker hash table. */ |
762 | ||
763 | static struct bfd_hash_entry * | |
2c3fc389 NC |
764 | link_hash_newfunc (struct bfd_hash_entry *entry, |
765 | struct bfd_hash_table *table, | |
766 | const char *string) | |
a85d7ed0 | 767 | { |
a85d7ed0 NC |
768 | /* Allocate the structure if it has not already been allocated by a |
769 | subclass. */ | |
0451c93c MS |
770 | if (entry == NULL) |
771 | { | |
772 | entry = bfd_hash_allocate (table, | |
773 | sizeof (struct elf_s390_link_hash_entry)); | |
774 | if (entry == NULL) | |
775 | return entry; | |
776 | } | |
ec338859 | 777 | |
a85d7ed0 | 778 | /* Call the allocation method of the superclass. */ |
0451c93c MS |
779 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
780 | if (entry != NULL) | |
a85d7ed0 | 781 | { |
0451c93c | 782 | struct elf_s390_link_hash_entry *eh; |
ec338859 | 783 | |
0451c93c | 784 | eh = (struct elf_s390_link_hash_entry *) entry; |
5236c819 | 785 | eh->gotplt_refcount = 0; |
69fc87f1 | 786 | eh->tls_type = GOT_UNKNOWN; |
470b557a AK |
787 | eh->ifunc_resolver_address = 0; |
788 | eh->ifunc_resolver_section = NULL; | |
a85d7ed0 NC |
789 | } |
790 | ||
0451c93c | 791 | return entry; |
a85d7ed0 NC |
792 | } |
793 | ||
794 | /* Create an s390 ELF linker hash table. */ | |
795 | ||
796 | static struct bfd_link_hash_table * | |
2c3fc389 | 797 | elf_s390_link_hash_table_create (bfd *abfd) |
a85d7ed0 NC |
798 | { |
799 | struct elf_s390_link_hash_table *ret; | |
986f0783 | 800 | size_t amt = sizeof (struct elf_s390_link_hash_table); |
a85d7ed0 | 801 | |
7bf52ea2 | 802 | ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt); |
0451c93c | 803 | if (ret == NULL) |
a85d7ed0 NC |
804 | return NULL; |
805 | ||
66eb6687 | 806 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
807 | sizeof (struct elf_s390_link_hash_entry), |
808 | S390_ELF_DATA)) | |
a85d7ed0 | 809 | { |
e2d34d7d | 810 | free (ret); |
a85d7ed0 NC |
811 | return NULL; |
812 | } | |
813 | ||
0451c93c MS |
814 | return &ret->elf.root; |
815 | } | |
816 | ||
0451c93c MS |
817 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
818 | ||
819 | static void | |
2c3fc389 NC |
820 | elf_s390_copy_indirect_symbol (struct bfd_link_info *info, |
821 | struct elf_link_hash_entry *dir, | |
822 | struct elf_link_hash_entry *ind) | |
0451c93c MS |
823 | { |
824 | struct elf_s390_link_hash_entry *edir, *eind; | |
825 | ||
826 | edir = (struct elf_s390_link_hash_entry *) dir; | |
827 | eind = (struct elf_s390_link_hash_entry *) ind; | |
828 | ||
69fc87f1 MS |
829 | if (ind->root.type == bfd_link_hash_indirect |
830 | && dir->got.refcount <= 0) | |
831 | { | |
832 | edir->tls_type = eind->tls_type; | |
833 | eind->tls_type = GOT_UNKNOWN; | |
834 | } | |
835 | ||
64285810 MS |
836 | if (ELIMINATE_COPY_RELOCS |
837 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
838 | && dir->dynamic_adjusted) |
839 | { | |
840 | /* If called to transfer flags for a weakdef during processing | |
841 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
842 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
e81830c5 AM |
843 | if (dir->versioned != versioned_hidden) |
844 | dir->ref_dynamic |= ind->ref_dynamic; | |
f5385ebf AM |
845 | dir->ref_regular |= ind->ref_regular; |
846 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
847 | dir->needs_plt |= ind->needs_plt; | |
848 | } | |
64285810 | 849 | else |
fcfa13d2 | 850 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
0451c93c | 851 | } |
a85d7ed0 | 852 | |
69fc87f1 | 853 | static int |
2c3fc389 NC |
854 | elf_s390_tls_transition (struct bfd_link_info *info, |
855 | int r_type, | |
856 | int is_local) | |
69fc87f1 | 857 | { |
0e1862bb | 858 | if (bfd_link_pic (info)) |
69fc87f1 MS |
859 | return r_type; |
860 | ||
861 | switch (r_type) | |
862 | { | |
863 | case R_390_TLS_GD32: | |
864 | case R_390_TLS_IE32: | |
865 | if (is_local) | |
866 | return R_390_TLS_LE32; | |
867 | return R_390_TLS_IE32; | |
868 | case R_390_TLS_GOTIE32: | |
869 | if (is_local) | |
870 | return R_390_TLS_LE32; | |
871 | return R_390_TLS_GOTIE32; | |
872 | case R_390_TLS_LDM32: | |
873 | return R_390_TLS_LE32; | |
874 | } | |
875 | ||
876 | return r_type; | |
877 | } | |
878 | ||
a85d7ed0 NC |
879 | /* Look through the relocs for a section during the first phase, and |
880 | allocate space in the global offset table or procedure linkage | |
881 | table. */ | |
882 | ||
0a1b45a2 | 883 | static bool |
2c3fc389 NC |
884 | elf_s390_check_relocs (bfd *abfd, |
885 | struct bfd_link_info *info, | |
886 | asection *sec, | |
887 | const Elf_Internal_Rela *relocs) | |
a85d7ed0 | 888 | { |
0451c93c | 889 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
890 | Elf_Internal_Shdr *symtab_hdr; |
891 | struct elf_link_hash_entry **sym_hashes; | |
a85d7ed0 NC |
892 | const Elf_Internal_Rela *rel; |
893 | const Elf_Internal_Rela *rel_end; | |
a85d7ed0 | 894 | asection *sreloc; |
5236c819 | 895 | bfd_signed_vma *local_got_refcounts; |
69fc87f1 | 896 | int tls_type, old_tls_type; |
470b557a | 897 | Elf_Internal_Sym *isym; |
a85d7ed0 | 898 | |
0e1862bb | 899 | if (bfd_link_relocatable (info)) |
0a1b45a2 | 900 | return true; |
a85d7ed0 | 901 | |
0ffa91dd NC |
902 | BFD_ASSERT (is_s390_elf (abfd)); |
903 | ||
0451c93c | 904 | htab = elf_s390_hash_table (info); |
0ffa91dd | 905 | symtab_hdr = &elf_symtab_hdr (abfd); |
a85d7ed0 | 906 | sym_hashes = elf_sym_hashes (abfd); |
5236c819 | 907 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 908 | |
a85d7ed0 NC |
909 | sreloc = NULL; |
910 | ||
911 | rel_end = relocs + sec->reloc_count; | |
912 | for (rel = relocs; rel < rel_end; rel++) | |
913 | { | |
69fc87f1 | 914 | unsigned int r_type; |
d42c267e | 915 | unsigned int r_symndx; |
a85d7ed0 NC |
916 | struct elf_link_hash_entry *h; |
917 | ||
918 | r_symndx = ELF32_R_SYM (rel->r_info); | |
919 | ||
0451c93c MS |
920 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
921 | { | |
695344c0 | 922 | /* xgettext:c-format */ |
871b3ab2 | 923 | _bfd_error_handler (_("%pB: bad symbol index: %d"), |
4eca0228 | 924 | abfd, r_symndx); |
0a1b45a2 | 925 | return false; |
0451c93c MS |
926 | } |
927 | ||
a85d7ed0 | 928 | if (r_symndx < symtab_hdr->sh_info) |
470b557a AK |
929 | { |
930 | /* A local symbol. */ | |
f1dfbfdb | 931 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
470b557a AK |
932 | abfd, r_symndx); |
933 | if (isym == NULL) | |
0a1b45a2 | 934 | return false; |
470b557a AK |
935 | |
936 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
937 | { | |
938 | struct plt_entry *plt; | |
939 | ||
0cb79d69 AK |
940 | if (htab->elf.dynobj == NULL) |
941 | htab->elf.dynobj = abfd; | |
942 | ||
470b557a | 943 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) |
0a1b45a2 | 944 | return false; |
470b557a AK |
945 | |
946 | if (local_got_refcounts == NULL) | |
947 | { | |
948 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) | |
0a1b45a2 | 949 | return false; |
470b557a AK |
950 | local_got_refcounts = elf_local_got_refcounts (abfd); |
951 | } | |
952 | plt = elf_s390_local_plt (abfd); | |
953 | plt[r_symndx].plt.refcount++; | |
954 | } | |
955 | h = NULL; | |
956 | } | |
a85d7ed0 | 957 | else |
973a3492 L |
958 | { |
959 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
960 | while (h->root.type == bfd_link_hash_indirect | |
961 | || h->root.type == bfd_link_hash_warning) | |
962 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
963 | } | |
a85d7ed0 | 964 | |
5236c819 MS |
965 | /* Create got section and local_got_refcounts array if they |
966 | are needed. */ | |
69fc87f1 MS |
967 | r_type = elf_s390_tls_transition (info, |
968 | ELF32_R_TYPE (rel->r_info), | |
969 | h == NULL); | |
970 | switch (r_type) | |
a85d7ed0 NC |
971 | { |
972 | case R_390_GOT12: | |
5236c819 | 973 | case R_390_GOT16: |
bd1ea41b | 974 | case R_390_GOT20: |
a85d7ed0 | 975 | case R_390_GOT32: |
befc3abb | 976 | case R_390_GOTENT: |
5236c819 MS |
977 | case R_390_GOTPLT12: |
978 | case R_390_GOTPLT16: | |
bd1ea41b | 979 | case R_390_GOTPLT20: |
5236c819 MS |
980 | case R_390_GOTPLT32: |
981 | case R_390_GOTPLTENT: | |
69fc87f1 MS |
982 | case R_390_TLS_GD32: |
983 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 984 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
985 | case R_390_TLS_GOTIE32: |
986 | case R_390_TLS_IEENT: | |
987 | case R_390_TLS_IE32: | |
988 | case R_390_TLS_LDM32: | |
5236c819 MS |
989 | if (h == NULL |
990 | && local_got_refcounts == NULL) | |
a85d7ed0 | 991 | { |
470b557a | 992 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) |
0a1b45a2 | 993 | return false; |
470b557a | 994 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 995 | } |
5236c819 MS |
996 | /* Fall through. */ |
997 | case R_390_GOTOFF16: | |
998 | case R_390_GOTOFF32: | |
0451c93c | 999 | case R_390_GOTPC: |
befc3abb | 1000 | case R_390_GOTPCDBL: |
f41345a7 | 1001 | if (htab->elf.sgot == NULL) |
0451c93c MS |
1002 | { |
1003 | if (htab->elf.dynobj == NULL) | |
1004 | htab->elf.dynobj = abfd; | |
ce558b89 | 1005 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) |
0a1b45a2 | 1006 | return false; |
0451c93c | 1007 | } |
5236c819 MS |
1008 | } |
1009 | ||
470b557a AK |
1010 | if (h != NULL) |
1011 | { | |
1012 | if (htab->elf.dynobj == NULL) | |
1013 | htab->elf.dynobj = abfd; | |
1014 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
0a1b45a2 | 1015 | return false; |
470b557a AK |
1016 | |
1017 | /* Make sure an IFUNC symbol defined in a non-shared object | |
1018 | always gets a PLT slot. */ | |
1019 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
1020 | { | |
1021 | /* The symbol is called by the dynamic loader in order | |
1022 | to resolve the relocation. So it is in fact also | |
1023 | referenced. */ | |
1024 | h->ref_regular = 1; | |
1025 | h->needs_plt = 1; | |
1026 | } | |
1027 | } | |
69fc87f1 | 1028 | switch (r_type) |
5236c819 | 1029 | { |
5236c819 MS |
1030 | case R_390_GOTPC: |
1031 | case R_390_GOTPCDBL: | |
470b557a AK |
1032 | /* These relocs do not need a GOT slot. They just load the |
1033 | GOT pointer itself or address something else relative to | |
1034 | the GOT. Since the GOT pointer has been set up above we | |
1035 | are done. */ | |
a85d7ed0 | 1036 | break; |
01a53584 AK |
1037 | case R_390_GOTOFF16: |
1038 | case R_390_GOTOFF32: | |
1039 | if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular) | |
1040 | break; | |
1a0670f3 | 1041 | /* Fall through. */ |
a85d7ed0 | 1042 | |
fb798c50 | 1043 | case R_390_PLT12DBL: |
26e41594 | 1044 | case R_390_PLT16DBL: |
fb798c50 | 1045 | case R_390_PLT24DBL: |
26e41594 | 1046 | case R_390_PLT32DBL: |
a85d7ed0 | 1047 | case R_390_PLT32: |
5236c819 MS |
1048 | case R_390_PLTOFF16: |
1049 | case R_390_PLTOFF32: | |
a85d7ed0 | 1050 | /* This symbol requires a procedure linkage table entry. We |
26e41594 AM |
1051 | actually build the entry in adjust_dynamic_symbol, |
1052 | because this might be a case of linking PIC code which is | |
1053 | never referenced by a dynamic object, in which case we | |
1054 | don't need to generate a procedure linkage table entry | |
1055 | after all. */ | |
a85d7ed0 NC |
1056 | |
1057 | /* If this is a local symbol, we resolve it directly without | |
26e41594 | 1058 | creating a procedure linkage table entry. */ |
5236c819 MS |
1059 | if (h != NULL) |
1060 | { | |
f5385ebf | 1061 | h->needs_plt = 1; |
5236c819 MS |
1062 | h->plt.refcount += 1; |
1063 | } | |
1064 | break; | |
a85d7ed0 | 1065 | |
5236c819 MS |
1066 | case R_390_GOTPLT12: |
1067 | case R_390_GOTPLT16: | |
bd1ea41b | 1068 | case R_390_GOTPLT20: |
5236c819 MS |
1069 | case R_390_GOTPLT32: |
1070 | case R_390_GOTPLTENT: | |
1071 | /* This symbol requires either a procedure linkage table entry | |
1072 | or an entry in the local got. We actually build the entry | |
1073 | in adjust_dynamic_symbol because whether this is really a | |
1074 | global reference can change and with it the fact if we have | |
1075 | to create a plt entry or a local got entry. To be able to | |
1076 | make a once global symbol a local one we have to keep track | |
1077 | of the number of gotplt references that exist for this | |
1078 | symbol. */ | |
1079 | if (h != NULL) | |
1080 | { | |
1081 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++; | |
f5385ebf | 1082 | h->needs_plt = 1; |
5236c819 MS |
1083 | h->plt.refcount += 1; |
1084 | } | |
1085 | else | |
1086 | local_got_refcounts[r_symndx] += 1; | |
a85d7ed0 NC |
1087 | break; |
1088 | ||
69fc87f1 MS |
1089 | case R_390_TLS_LDM32: |
1090 | htab->tls_ldm_got.refcount += 1; | |
1091 | break; | |
1092 | ||
1093 | case R_390_TLS_IE32: | |
1094 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1095 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1096 | case R_390_TLS_GOTIE32: |
1097 | case R_390_TLS_IEENT: | |
0e1862bb | 1098 | if (bfd_link_pic (info)) |
69fc87f1 | 1099 | info->flags |= DF_STATIC_TLS; |
ae9a127f | 1100 | /* Fall through. */ |
69fc87f1 MS |
1101 | |
1102 | case R_390_GOT12: | |
26e41594 | 1103 | case R_390_GOT16: |
bd1ea41b | 1104 | case R_390_GOT20: |
69fc87f1 MS |
1105 | case R_390_GOT32: |
1106 | case R_390_GOTENT: | |
1107 | case R_390_TLS_GD32: | |
1108 | /* This symbol requires a global offset table entry. */ | |
1109 | switch (r_type) | |
1110 | { | |
1111 | default: | |
1112 | case R_390_GOT12: | |
1113 | case R_390_GOT16: | |
bd1ea41b | 1114 | case R_390_GOT20: |
69fc87f1 MS |
1115 | case R_390_GOT32: |
1116 | case R_390_GOTENT: | |
1117 | tls_type = GOT_NORMAL; | |
1118 | break; | |
1119 | case R_390_TLS_GD32: | |
1120 | tls_type = GOT_TLS_GD; | |
1121 | break; | |
1122 | case R_390_TLS_IE32: | |
1123 | case R_390_TLS_GOTIE32: | |
1124 | tls_type = GOT_TLS_IE; | |
1125 | break; | |
1126 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1127 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1128 | case R_390_TLS_IEENT: |
1129 | tls_type = GOT_TLS_IE_NLT; | |
1130 | break; | |
1131 | } | |
1132 | ||
1133 | if (h != NULL) | |
1134 | { | |
1135 | h->got.refcount += 1; | |
1136 | old_tls_type = elf_s390_hash_entry(h)->tls_type; | |
1137 | } | |
1138 | else | |
1139 | { | |
1140 | local_got_refcounts[r_symndx] += 1; | |
1141 | old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx]; | |
1142 | } | |
1143 | /* If a TLS symbol is accessed using IE at least once, | |
1144 | there is no point to use dynamic model for it. */ | |
1145 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN) | |
1146 | { | |
1147 | if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL) | |
1148 | { | |
4eca0228 | 1149 | _bfd_error_handler |
695344c0 | 1150 | /* xgettext:c-format */ |
871b3ab2 | 1151 | (_("%pB: `%s' accessed both as normal and thread local symbol"), |
d003868e | 1152 | abfd, h->root.root.string); |
0a1b45a2 | 1153 | return false; |
69fc87f1 MS |
1154 | } |
1155 | if (old_tls_type > tls_type) | |
1156 | tls_type = old_tls_type; | |
1157 | } | |
1158 | ||
1159 | if (old_tls_type != tls_type) | |
1160 | { | |
1161 | if (h != NULL) | |
1162 | elf_s390_hash_entry (h)->tls_type = tls_type; | |
1163 | else | |
1164 | elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1165 | } | |
1166 | ||
1167 | if (r_type != R_390_TLS_IE32) | |
1168 | break; | |
ae9a127f | 1169 | /* Fall through. */ |
69fc87f1 MS |
1170 | |
1171 | case R_390_TLS_LE32: | |
e00d879a AK |
1172 | /* For static linking and executables this reloc will be |
1173 | calculated at linktime otherwise a TLS_TPOFF runtime | |
1174 | reloc will be generated. */ | |
0e1862bb | 1175 | if (r_type == R_390_TLS_LE32 && bfd_link_pie (info)) |
e00d879a AK |
1176 | break; |
1177 | ||
0e1862bb | 1178 | if (!bfd_link_pic (info)) |
69fc87f1 MS |
1179 | break; |
1180 | info->flags |= DF_STATIC_TLS; | |
ae9a127f | 1181 | /* Fall through. */ |
69fc87f1 | 1182 | |
26e41594 AM |
1183 | case R_390_8: |
1184 | case R_390_16: | |
a85d7ed0 | 1185 | case R_390_32: |
26e41594 | 1186 | case R_390_PC16: |
fb798c50 | 1187 | case R_390_PC12DBL: |
26e41594 | 1188 | case R_390_PC16DBL: |
fb798c50 | 1189 | case R_390_PC24DBL: |
befc3abb | 1190 | case R_390_PC32DBL: |
a85d7ed0 | 1191 | case R_390_PC32: |
99ba5125 | 1192 | if (h != NULL && bfd_link_executable (info)) |
0451c93c MS |
1193 | { |
1194 | /* If this reloc is in a read-only section, we might | |
1195 | need a copy reloc. We can't check reliably at this | |
1196 | stage whether the section is read-only, as input | |
1197 | sections have not yet been mapped to output sections. | |
1198 | Tentatively set the flag for now, and correct in | |
1199 | adjust_dynamic_symbol. */ | |
f5385ebf | 1200 | h->non_got_ref = 1; |
ec338859 | 1201 | |
0e1862bb | 1202 | if (!bfd_link_pic (info)) |
470b557a AK |
1203 | { |
1204 | /* We may need a .plt entry if the function this reloc | |
1205 | refers to is in a shared lib. */ | |
1206 | h->plt.refcount += 1; | |
1207 | } | |
0451c93c | 1208 | } |
a85d7ed0 NC |
1209 | |
1210 | /* If we are creating a shared library, and this is a reloc | |
0451c93c MS |
1211 | against a global symbol, or a non PC relative reloc |
1212 | against a local symbol, then we need to copy the reloc | |
1213 | into the shared library. However, if we are linking with | |
1214 | -Bsymbolic, we do not need to copy a reloc against a | |
1215 | global symbol which is defined in an object we are | |
1216 | including in the link (i.e., DEF_REGULAR is set). At | |
1217 | this point we have not seen all the input files, so it is | |
1218 | possible that DEF_REGULAR is not set now but will be set | |
1219 | later (it is never cleared). In case of a weak definition, | |
1220 | DEF_REGULAR may be cleared later by a strong definition in | |
1221 | a shared library. We account for that possibility below by | |
1222 | storing information in the relocs_copied field of the hash | |
1223 | table entry. A similar situation occurs when creating | |
1224 | shared libraries and symbol visibility changes render the | |
1225 | symbol local. | |
1226 | ||
1227 | If on the other hand, we are creating an executable, we | |
1228 | may need to keep relocations for symbols satisfied by a | |
1229 | dynamic library if we manage to avoid copy relocs for the | |
1230 | symbol. */ | |
0e1862bb | 1231 | if ((bfd_link_pic (info) |
0451c93c | 1232 | && (sec->flags & SEC_ALLOC) != 0 |
ec338859 | 1233 | && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16 |
fb798c50 | 1234 | && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL |
0451c93c | 1235 | && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL |
fb798c50 | 1236 | && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL |
befc3abb | 1237 | && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL |
0451c93c MS |
1238 | && ELF32_R_TYPE (rel->r_info) != R_390_PC32) |
1239 | || (h != NULL | |
8c21ca21 | 1240 | && (! SYMBOLIC_BIND (info, h) |
0451c93c | 1241 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1242 | || !h->def_regular)))) |
64285810 | 1243 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 1244 | && !bfd_link_pic (info) |
0451c93c MS |
1245 | && (sec->flags & SEC_ALLOC) != 0 |
1246 | && h != NULL | |
1247 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 1248 | || !h->def_regular))) |
a85d7ed0 | 1249 | { |
00d8c7a9 AK |
1250 | struct elf_dyn_relocs *p; |
1251 | struct elf_dyn_relocs **head; | |
ec338859 | 1252 | |
0451c93c MS |
1253 | /* We must copy these reloc types into the output file. |
1254 | Create a reloc section in dynobj and make room for | |
1255 | this reloc. */ | |
a85d7ed0 NC |
1256 | if (sreloc == NULL) |
1257 | { | |
0451c93c MS |
1258 | if (htab->elf.dynobj == NULL) |
1259 | htab->elf.dynobj = abfd; | |
a85d7ed0 | 1260 | |
83bac4b0 | 1261 | sreloc = _bfd_elf_make_dynamic_reloc_section |
0a1b45a2 | 1262 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ true); |
83bac4b0 | 1263 | |
a85d7ed0 | 1264 | if (sreloc == NULL) |
0a1b45a2 | 1265 | return false; |
a85d7ed0 NC |
1266 | } |
1267 | ||
0451c93c MS |
1268 | /* If this is a global symbol, we count the number of |
1269 | relocations we need for this symbol. */ | |
1270 | if (h != NULL) | |
a85d7ed0 | 1271 | { |
190eb1dd | 1272 | head = &h->dyn_relocs; |
0451c93c MS |
1273 | } |
1274 | else | |
1275 | { | |
ec338859 AM |
1276 | /* Track dynamic relocs needed for local syms too. |
1277 | We really need local syms available to do this | |
1278 | easily. Oh well. */ | |
ec338859 | 1279 | asection *s; |
6edfbbad | 1280 | void *vpp; |
ae9a127f | 1281 | |
f1dfbfdb | 1282 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
87d72d41 AM |
1283 | abfd, r_symndx); |
1284 | if (isym == NULL) | |
0a1b45a2 | 1285 | return false; |
ec338859 | 1286 | |
87d72d41 AM |
1287 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
1288 | if (s == NULL) | |
1289 | s = sec; | |
1290 | ||
6edfbbad | 1291 | vpp = &elf_section_data (s)->local_dynrel; |
00d8c7a9 | 1292 | head = (struct elf_dyn_relocs **) vpp; |
ec338859 AM |
1293 | } |
1294 | ||
1295 | p = *head; | |
1296 | if (p == NULL || p->sec != sec) | |
1297 | { | |
986f0783 | 1298 | size_t amt = sizeof *p; |
ae9a127f | 1299 | |
00d8c7a9 | 1300 | p = ((struct elf_dyn_relocs *) |
ec338859 AM |
1301 | bfd_alloc (htab->elf.dynobj, amt)); |
1302 | if (p == NULL) | |
0a1b45a2 | 1303 | return false; |
ec338859 AM |
1304 | p->next = *head; |
1305 | *head = p; | |
1306 | p->sec = sec; | |
1307 | p->count = 0; | |
1308 | p->pc_count = 0; | |
a85d7ed0 | 1309 | } |
ec338859 AM |
1310 | |
1311 | p->count += 1; | |
1312 | if (ELF32_R_TYPE (rel->r_info) == R_390_PC16 | |
fb798c50 | 1313 | || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL |
ec338859 | 1314 | || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL |
fb798c50 | 1315 | || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL |
befc3abb | 1316 | || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL |
ec338859 AM |
1317 | || ELF32_R_TYPE (rel->r_info) == R_390_PC32) |
1318 | p->pc_count += 1; | |
a85d7ed0 | 1319 | } |
a85d7ed0 | 1320 | break; |
ec338859 | 1321 | |
a85d7ed0 NC |
1322 | /* This relocation describes the C++ object vtable hierarchy. |
1323 | Reconstruct it for later use during GC. */ | |
26e41594 | 1324 | case R_390_GNU_VTINHERIT: |
c152c796 | 1325 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
0a1b45a2 | 1326 | return false; |
26e41594 | 1327 | break; |
ec338859 | 1328 | |
a85d7ed0 NC |
1329 | /* This relocation describes which C++ vtable entries are actually |
1330 | used. Record for later use during GC. */ | |
26e41594 | 1331 | case R_390_GNU_VTENTRY: |
a0ea3a14 | 1332 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
0a1b45a2 | 1333 | return false; |
26e41594 | 1334 | break; |
ec338859 | 1335 | |
a85d7ed0 NC |
1336 | default: |
1337 | break; | |
1338 | } | |
1339 | } | |
1340 | ||
0a1b45a2 | 1341 | return true; |
a85d7ed0 NC |
1342 | } |
1343 | ||
1344 | /* Return the section that should be marked against GC for a given | |
1345 | relocation. */ | |
1346 | ||
1347 | static asection * | |
07adf181 AM |
1348 | elf_s390_gc_mark_hook (asection *sec, |
1349 | struct bfd_link_info *info, | |
1350 | Elf_Internal_Rela *rel, | |
1351 | struct elf_link_hash_entry *h, | |
1352 | Elf_Internal_Sym *sym) | |
a85d7ed0 NC |
1353 | { |
1354 | if (h != NULL) | |
07adf181 AM |
1355 | switch (ELF32_R_TYPE (rel->r_info)) |
1356 | { | |
1357 | case R_390_GNU_VTINHERIT: | |
1358 | case R_390_GNU_VTENTRY: | |
1359 | return NULL; | |
1360 | } | |
1361 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
a85d7ed0 | 1362 | |
a85d7ed0 NC |
1363 | } |
1364 | ||
5236c819 MS |
1365 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
1366 | entry but we found we will not create any. Called when we find we will | |
1367 | not have any PLT for this symbol, by for example | |
1368 | elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
1369 | or elf_s390_size_dynamic_sections if no dynamic sections will be | |
1370 | created (we're only linking static objects). */ | |
1371 | ||
1372 | static void | |
2c3fc389 | 1373 | elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h) |
5236c819 MS |
1374 | { |
1375 | if (h->elf.root.type == bfd_link_hash_warning) | |
1376 | h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link; | |
1377 | ||
1378 | if (h->gotplt_refcount <= 0) | |
1379 | return; | |
1380 | ||
1381 | /* We simply add the number of gotplt references to the number | |
1382 | * of got references for this symbol. */ | |
1383 | h->elf.got.refcount += h->gotplt_refcount; | |
1384 | h->gotplt_refcount = -1; | |
1385 | } | |
1386 | ||
a85d7ed0 NC |
1387 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1388 | regular object. The current definition is in some section of the | |
1389 | dynamic object, but we're not including those sections. We have to | |
1390 | change the definition to something the rest of the link can | |
1391 | understand. */ | |
1392 | ||
0a1b45a2 | 1393 | static bool |
2c3fc389 NC |
1394 | elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info, |
1395 | struct elf_link_hash_entry *h) | |
a85d7ed0 | 1396 | { |
0451c93c | 1397 | struct elf_s390_link_hash_table *htab; |
5474d94f | 1398 | asection *s, *srel; |
a85d7ed0 | 1399 | |
470b557a AK |
1400 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1401 | if (s390_is_ifunc_symbol_p (h)) | |
d8ee9e44 AK |
1402 | { |
1403 | /* All local STT_GNU_IFUNC references must be treated as local | |
1404 | calls via local PLT. */ | |
1405 | if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h)) | |
1406 | { | |
1407 | bfd_size_type pc_count = 0, count = 0; | |
1408 | struct elf_dyn_relocs **pp; | |
d8ee9e44 AK |
1409 | struct elf_dyn_relocs *p; |
1410 | ||
190eb1dd | 1411 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
d8ee9e44 AK |
1412 | { |
1413 | pc_count += p->pc_count; | |
1414 | p->count -= p->pc_count; | |
1415 | p->pc_count = 0; | |
1416 | count += p->count; | |
1417 | if (p->count == 0) | |
1418 | *pp = p->next; | |
1419 | else | |
1420 | pp = &p->next; | |
1421 | } | |
1422 | ||
1423 | if (pc_count || count) | |
1424 | { | |
1425 | h->needs_plt = 1; | |
1426 | h->non_got_ref = 1; | |
1427 | if (h->plt.refcount <= 0) | |
1428 | h->plt.refcount = 1; | |
1429 | else | |
1430 | h->plt.refcount += 1; | |
1431 | } | |
1432 | } | |
1433 | ||
1434 | if (h->plt.refcount <= 0) | |
1435 | { | |
1436 | h->plt.offset = (bfd_vma) -1; | |
1437 | h->needs_plt = 0; | |
1438 | } | |
0a1b45a2 | 1439 | return true; |
d8ee9e44 | 1440 | } |
470b557a | 1441 | |
a85d7ed0 NC |
1442 | /* If this is a function, put it in the procedure linkage table. We |
1443 | will fill in the contents of the procedure linkage table later | |
cedb70c5 | 1444 | (although we could actually do it here). */ |
a85d7ed0 | 1445 | if (h->type == STT_FUNC |
f5385ebf | 1446 | || h->needs_plt) |
a85d7ed0 | 1447 | { |
0451c93c | 1448 | if (h->plt.refcount <= 0 |
8c21ca21 AK |
1449 | || SYMBOL_CALLS_LOCAL (info, h) |
1450 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1451 | && h->root.type != bfd_link_hash_undefweak)) | |
a85d7ed0 NC |
1452 | { |
1453 | /* This case can occur if we saw a PLT32 reloc in an input | |
26e41594 AM |
1454 | file, but the symbol was never referred to by a dynamic |
1455 | object, or if all references were garbage collected. In | |
a85d7ed0 NC |
1456 | such a case, we don't actually need to build a procedure |
1457 | linkage table, and we can just do a PC32 reloc instead. */ | |
1458 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1459 | h->needs_plt = 0; |
5236c819 | 1460 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
a85d7ed0 NC |
1461 | } |
1462 | ||
0a1b45a2 | 1463 | return true; |
a85d7ed0 | 1464 | } |
bbd7ec4a | 1465 | else |
0451c93c MS |
1466 | /* It's possible that we incorrectly decided a .plt reloc was |
1467 | needed for an R_390_PC32 reloc to a non-function sym in | |
1468 | check_relocs. We can't decide accurately between function and | |
1469 | non-function syms in check-relocs; Objects loaded later in | |
1470 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1471 | h->plt.offset = (bfd_vma) -1; |
a85d7ed0 NC |
1472 | |
1473 | /* If this is a weak symbol, and there is a real definition, the | |
1474 | processor independent code will have arranged for us to see the | |
1475 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 1476 | if (h->is_weakalias) |
a85d7ed0 | 1477 | { |
60d67dc8 AM |
1478 | struct elf_link_hash_entry *def = weakdef (h); |
1479 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
1480 | h->root.u.def.section = def->root.u.def.section; | |
1481 | h->root.u.def.value = def->root.u.def.value; | |
64285810 | 1482 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
60d67dc8 | 1483 | h->non_got_ref = def->non_got_ref; |
0a1b45a2 | 1484 | return true; |
a85d7ed0 NC |
1485 | } |
1486 | ||
1487 | /* This is a reference to a symbol defined by a dynamic object which | |
1488 | is not a function. */ | |
1489 | ||
1490 | /* If we are creating a shared library, we must presume that the | |
1491 | only references to the symbol are via the global offset table. | |
1492 | For such cases we need not do anything here; the relocations will | |
1493 | be handled correctly by relocate_section. */ | |
0e1862bb | 1494 | if (bfd_link_pic (info)) |
0a1b45a2 | 1495 | return true; |
a85d7ed0 NC |
1496 | |
1497 | /* If there are no references to this symbol that do not use the | |
1498 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 1499 | if (!h->non_got_ref) |
0a1b45a2 | 1500 | return true; |
a85d7ed0 | 1501 | |
0451c93c MS |
1502 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1503 | if (info->nocopyreloc) | |
1504 | { | |
f5385ebf | 1505 | h->non_got_ref = 0; |
0a1b45a2 | 1506 | return true; |
0451c93c MS |
1507 | } |
1508 | ||
3bf083ed AM |
1509 | /* If we don't find any dynamic relocs in read-only sections, then |
1510 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
5dbc8b37 | 1511 | if (ELIMINATE_COPY_RELOCS && !_bfd_elf_readonly_dynrelocs (h)) |
0451c93c | 1512 | { |
3bf083ed | 1513 | h->non_got_ref = 0; |
0a1b45a2 | 1514 | return true; |
0451c93c MS |
1515 | } |
1516 | ||
a85d7ed0 NC |
1517 | /* We must allocate the symbol in our .dynbss section, which will |
1518 | become part of the .bss section of the executable. There will be | |
1519 | an entry for this symbol in the .dynsym section. The dynamic | |
1520 | object will contain position independent code, so all references | |
1521 | from the dynamic object to this symbol will go through the global | |
1522 | offset table. The dynamic linker will use the .dynsym entry to | |
1523 | determine the address it must put in the global offset table, so | |
1524 | both the dynamic object and the regular object will refer to the | |
1525 | same memory location for the variable. */ | |
1526 | ||
0451c93c | 1527 | htab = elf_s390_hash_table (info); |
a85d7ed0 | 1528 | |
0451c93c MS |
1529 | /* We must generate a R_390_COPY reloc to tell the dynamic linker to |
1530 | copy the initial value out of the dynamic object and into the | |
1531 | runtime process image. */ | |
5474d94f AM |
1532 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
1533 | { | |
1534 | s = htab->elf.sdynrelro; | |
1535 | srel = htab->elf.sreldynrelro; | |
1536 | } | |
1537 | else | |
1538 | { | |
1539 | s = htab->elf.sdynbss; | |
1540 | srel = htab->elf.srelbss; | |
1541 | } | |
1d7e9d18 | 1542 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
a85d7ed0 | 1543 | { |
5474d94f | 1544 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1545 | h->needs_copy = 1; |
a85d7ed0 NC |
1546 | } |
1547 | ||
6cabe1ea | 1548 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a85d7ed0 NC |
1549 | } |
1550 | ||
0451c93c MS |
1551 | /* Allocate space in .plt, .got and associated reloc sections for |
1552 | dynamic relocs. */ | |
1553 | ||
0a1b45a2 | 1554 | static bool |
2c3fc389 | 1555 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
0451c93c MS |
1556 | { |
1557 | struct bfd_link_info *info; | |
1558 | struct elf_s390_link_hash_table *htab; | |
00d8c7a9 | 1559 | struct elf_dyn_relocs *p; |
0451c93c | 1560 | |
e92d460e | 1561 | if (h->root.type == bfd_link_hash_indirect) |
0a1b45a2 | 1562 | return true; |
0451c93c MS |
1563 | |
1564 | info = (struct bfd_link_info *) inf; | |
1565 | htab = elf_s390_hash_table (info); | |
1566 | ||
470b557a AK |
1567 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
1568 | here if it is defined and referenced in a non-shared object. */ | |
1569 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
61643fba | 1570 | return s390_elf_allocate_ifunc_dyn_relocs (info, h); |
470b557a AK |
1571 | else if (htab->elf.dynamic_sections_created |
1572 | && h->plt.refcount > 0) | |
0451c93c MS |
1573 | { |
1574 | /* Make sure this symbol is output as a dynamic symbol. | |
1575 | Undefined weak syms won't yet be marked as dynamic. */ | |
1576 | if (h->dynindx == -1 | |
f5385ebf | 1577 | && !h->forced_local) |
0451c93c | 1578 | { |
c152c796 | 1579 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
0a1b45a2 | 1580 | return false; |
0451c93c MS |
1581 | } |
1582 | ||
0e1862bb | 1583 | if (bfd_link_pic (info) |
4ec72bde | 1584 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
0451c93c | 1585 | { |
f41345a7 | 1586 | asection *s = htab->elf.splt; |
0451c93c MS |
1587 | |
1588 | /* If this is the first .plt entry, make room for the special | |
1589 | first entry. */ | |
eea6121a AM |
1590 | if (s->size == 0) |
1591 | s->size += PLT_FIRST_ENTRY_SIZE; | |
0451c93c | 1592 | |
eea6121a | 1593 | h->plt.offset = s->size; |
0451c93c MS |
1594 | |
1595 | /* If this symbol is not defined in a regular file, and we are | |
1596 | not generating a shared library, then set the symbol to this | |
1597 | location in the .plt. This is required to make function | |
1598 | pointers compare as equal between the normal executable and | |
1599 | the shared library. */ | |
0e1862bb | 1600 | if (! bfd_link_pic (info) |
f5385ebf | 1601 | && !h->def_regular) |
0451c93c MS |
1602 | { |
1603 | h->root.u.def.section = s; | |
1604 | h->root.u.def.value = h->plt.offset; | |
1605 | } | |
ec338859 | 1606 | |
0451c93c | 1607 | /* Make room for this entry. */ |
eea6121a | 1608 | s->size += PLT_ENTRY_SIZE; |
ec338859 | 1609 | |
24801b15 AK |
1610 | /* We also need to make an entry in the .got.plt section, which |
1611 | will be placed in the .got section by the linker script. */ | |
f41345a7 | 1612 | htab->elf.sgotplt->size += GOT_ENTRY_SIZE; |
0451c93c MS |
1613 | |
1614 | /* We also need to make an entry in the .rela.plt section. */ | |
f41345a7 | 1615 | htab->elf.srelplt->size += sizeof (Elf32_External_Rela); |
0451c93c MS |
1616 | } |
1617 | else | |
1618 | { | |
07d6d2b8 | 1619 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1620 | h->needs_plt = 0; |
5236c819 | 1621 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c | 1622 | } |
ec338859 | 1623 | } |
0451c93c MS |
1624 | else |
1625 | { | |
1626 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1627 | h->needs_plt = 0; |
5236c819 | 1628 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
ec338859 AM |
1629 | } |
1630 | ||
69fc87f1 MS |
1631 | /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to |
1632 | the binary, we can optimize a bit. IE32 and GOTIE32 get converted | |
1633 | to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT | |
1634 | we can save the dynamic TLS relocation. */ | |
1635 | if (h->got.refcount > 0 | |
0e1862bb | 1636 | && !bfd_link_pic (info) |
69fc87f1 MS |
1637 | && h->dynindx == -1 |
1638 | && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE) | |
0451c93c | 1639 | { |
69fc87f1 MS |
1640 | if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT) |
1641 | /* For the GOTIE access without a literal pool entry the offset has | |
1642 | to be stored somewhere. The immediate value in the instruction | |
1643 | is not bit enough so the value is stored in the got. */ | |
1644 | { | |
f41345a7 AK |
1645 | h->got.offset = htab->elf.sgot->size; |
1646 | htab->elf.sgot->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1647 | } |
1648 | else | |
1649 | h->got.offset = (bfd_vma) -1; | |
1650 | } | |
1651 | else if (h->got.refcount > 0) | |
ceada896 | 1652 | { |
0451c93c | 1653 | asection *s; |
0a1b45a2 | 1654 | bool dyn; |
69fc87f1 | 1655 | int tls_type = elf_s390_hash_entry(h)->tls_type; |
0451c93c MS |
1656 | |
1657 | /* Make sure this symbol is output as a dynamic symbol. | |
1658 | Undefined weak syms won't yet be marked as dynamic. */ | |
1659 | if (h->dynindx == -1 | |
f5385ebf | 1660 | && !h->forced_local) |
0451c93c | 1661 | { |
c152c796 | 1662 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
0a1b45a2 | 1663 | return false; |
0451c93c MS |
1664 | } |
1665 | ||
f41345a7 | 1666 | s = htab->elf.sgot; |
eea6121a AM |
1667 | h->got.offset = s->size; |
1668 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1669 | /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */ |
1670 | if (tls_type == GOT_TLS_GD) | |
eea6121a | 1671 | s->size += GOT_ENTRY_SIZE; |
0451c93c | 1672 | dyn = htab->elf.dynamic_sections_created; |
69fc87f1 MS |
1673 | /* R_390_TLS_IE32 needs one dynamic relocation, |
1674 | R_390_TLS_GD32 needs one if local symbol and two if global. */ | |
1675 | if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1676 | || tls_type >= GOT_TLS_IE) | |
f41345a7 | 1677 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
69fc87f1 | 1678 | else if (tls_type == GOT_TLS_GD) |
f41345a7 | 1679 | htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela); |
82058a73 MS |
1680 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1681 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 1682 | && (bfd_link_pic (info) |
82058a73 | 1683 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
f41345a7 | 1684 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
0451c93c MS |
1685 | } |
1686 | else | |
1687 | h->got.offset = (bfd_vma) -1; | |
1688 | ||
190eb1dd | 1689 | if (h->dyn_relocs == NULL) |
0a1b45a2 | 1690 | return true; |
0451c93c MS |
1691 | |
1692 | /* In the shared -Bsymbolic case, discard space allocated for | |
1693 | dynamic pc-relative relocs against symbols which turn out to be | |
1694 | defined in regular objects. For the normal shared case, discard | |
1695 | space for pc-relative relocs that have become local due to symbol | |
1696 | visibility changes. */ | |
1697 | ||
0e1862bb | 1698 | if (bfd_link_pic (info)) |
0451c93c | 1699 | { |
8c21ca21 | 1700 | if (SYMBOL_CALLS_LOCAL (info, h)) |
0451c93c | 1701 | { |
00d8c7a9 | 1702 | struct elf_dyn_relocs **pp; |
0451c93c | 1703 | |
190eb1dd | 1704 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
0451c93c MS |
1705 | { |
1706 | p->count -= p->pc_count; | |
1707 | p->pc_count = 0; | |
1708 | if (p->count == 0) | |
1709 | *pp = p->next; | |
1710 | else | |
1711 | pp = &p->next; | |
1712 | } | |
1713 | } | |
82058a73 MS |
1714 | |
1715 | /* Also discard relocs on undefined weak syms with non-default | |
1716 | visibility. */ | |
190eb1dd | 1717 | if (h->dyn_relocs != NULL |
82058a73 | 1718 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 | 1719 | { |
b27bb18f L |
1720 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
1721 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
190eb1dd | 1722 | h->dyn_relocs = NULL; |
22d606e9 AM |
1723 | |
1724 | /* Make sure undefined weak symbols are output as a dynamic | |
1725 | symbol in PIEs. */ | |
1726 | else if (h->dynindx == -1 | |
1727 | && !h->forced_local) | |
1728 | { | |
1729 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
0a1b45a2 | 1730 | return false; |
22d606e9 AM |
1731 | } |
1732 | } | |
0451c93c | 1733 | } |
64285810 | 1734 | else if (ELIMINATE_COPY_RELOCS) |
0451c93c MS |
1735 | { |
1736 | /* For the non-shared case, discard space for relocs against | |
1737 | symbols which turn out to need copy relocs or are not | |
1738 | dynamic. */ | |
1739 | ||
f5385ebf AM |
1740 | if (!h->non_got_ref |
1741 | && ((h->def_dynamic | |
1742 | && !h->def_regular) | |
0451c93c MS |
1743 | || (htab->elf.dynamic_sections_created |
1744 | && (h->root.type == bfd_link_hash_undefweak | |
1745 | || h->root.type == bfd_link_hash_undefined)))) | |
1746 | { | |
1747 | /* Make sure this symbol is output as a dynamic symbol. | |
1748 | Undefined weak syms won't yet be marked as dynamic. */ | |
1749 | if (h->dynindx == -1 | |
f5385ebf | 1750 | && !h->forced_local) |
0451c93c | 1751 | { |
c152c796 | 1752 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
0a1b45a2 | 1753 | return false; |
0451c93c MS |
1754 | } |
1755 | ||
1756 | /* If that succeeded, we know we'll be keeping all the | |
1757 | relocs. */ | |
1758 | if (h->dynindx != -1) | |
1759 | goto keep; | |
1760 | } | |
1761 | ||
190eb1dd | 1762 | h->dyn_relocs = NULL; |
0451c93c | 1763 | |
ec338859 | 1764 | keep: ; |
0451c93c MS |
1765 | } |
1766 | ||
1767 | /* Finally, allocate space. */ | |
190eb1dd | 1768 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
0451c93c MS |
1769 | { |
1770 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
ae9a127f | 1771 | |
eea6121a | 1772 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
0451c93c MS |
1773 | } |
1774 | ||
0a1b45a2 | 1775 | return true; |
0451c93c MS |
1776 | } |
1777 | ||
a85d7ed0 NC |
1778 | /* Set the sizes of the dynamic sections. */ |
1779 | ||
0a1b45a2 | 1780 | static bool |
2c3fc389 NC |
1781 | elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
1782 | struct bfd_link_info *info) | |
a85d7ed0 | 1783 | { |
0451c93c | 1784 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
1785 | bfd *dynobj; |
1786 | asection *s; | |
0a1b45a2 | 1787 | bool relocs; |
0451c93c | 1788 | bfd *ibfd; |
a85d7ed0 | 1789 | |
0451c93c MS |
1790 | htab = elf_s390_hash_table (info); |
1791 | dynobj = htab->elf.dynobj; | |
1792 | if (dynobj == NULL) | |
1793 | abort (); | |
a85d7ed0 | 1794 | |
0451c93c | 1795 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
1796 | { |
1797 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 1798 | if (bfd_link_executable (info) && !info->nointerp) |
a85d7ed0 | 1799 | { |
3d4d4302 | 1800 | s = bfd_get_linker_section (dynobj, ".interp"); |
0451c93c MS |
1801 | if (s == NULL) |
1802 | abort (); | |
eea6121a | 1803 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
a85d7ed0 NC |
1804 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1805 | } | |
1806 | } | |
a85d7ed0 | 1807 | |
0451c93c MS |
1808 | /* Set up .got offsets for local syms, and space for local dynamic |
1809 | relocs. */ | |
c72f2fb2 | 1810 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a85d7ed0 | 1811 | { |
0451c93c MS |
1812 | bfd_signed_vma *local_got; |
1813 | bfd_signed_vma *end_local_got; | |
69fc87f1 | 1814 | char *local_tls_type; |
0451c93c MS |
1815 | bfd_size_type locsymcount; |
1816 | Elf_Internal_Shdr *symtab_hdr; | |
1817 | asection *srela; | |
470b557a AK |
1818 | struct plt_entry *local_plt; |
1819 | unsigned int i; | |
a85d7ed0 | 1820 | |
0ffa91dd | 1821 | if (! is_s390_elf (ibfd)) |
a85d7ed0 NC |
1822 | continue; |
1823 | ||
0451c93c | 1824 | for (s = ibfd->sections; s != NULL; s = s->next) |
a85d7ed0 | 1825 | { |
00d8c7a9 | 1826 | struct elf_dyn_relocs *p; |
0451c93c | 1827 | |
6edfbbad | 1828 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
a85d7ed0 | 1829 | { |
ec338859 AM |
1830 | if (!bfd_is_abs_section (p->sec) |
1831 | && bfd_is_abs_section (p->sec->output_section)) | |
1832 | { | |
1833 | /* Input section has been discarded, either because | |
1834 | it is a copy of a linkonce section or due to | |
1835 | linker script /DISCARD/, so we'll be discarding | |
1836 | the relocs too. */ | |
1837 | } | |
248866a8 | 1838 | else if (p->count != 0) |
ec338859 AM |
1839 | { |
1840 | srela = elf_section_data (p->sec)->sreloc; | |
eea6121a | 1841 | srela->size += p->count * sizeof (Elf32_External_Rela); |
248866a8 AM |
1842 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
1843 | info->flags |= DF_TEXTREL; | |
ec338859 | 1844 | } |
a85d7ed0 NC |
1845 | } |
1846 | } | |
0451c93c MS |
1847 | |
1848 | local_got = elf_local_got_refcounts (ibfd); | |
1849 | if (!local_got) | |
1850 | continue; | |
1851 | ||
0ffa91dd | 1852 | symtab_hdr = &elf_symtab_hdr (ibfd); |
0451c93c MS |
1853 | locsymcount = symtab_hdr->sh_info; |
1854 | end_local_got = local_got + locsymcount; | |
69fc87f1 | 1855 | local_tls_type = elf_s390_local_got_tls_type (ibfd); |
f41345a7 AK |
1856 | s = htab->elf.sgot; |
1857 | srela = htab->elf.srelgot; | |
69fc87f1 | 1858 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
a85d7ed0 | 1859 | { |
0451c93c | 1860 | if (*local_got > 0) |
a85d7ed0 | 1861 | { |
eea6121a AM |
1862 | *local_got = s->size; |
1863 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 | 1864 | if (*local_tls_type == GOT_TLS_GD) |
eea6121a | 1865 | s->size += GOT_ENTRY_SIZE; |
0e1862bb | 1866 | if (bfd_link_pic (info)) |
eea6121a | 1867 | srela->size += sizeof (Elf32_External_Rela); |
a85d7ed0 NC |
1868 | } |
1869 | else | |
0451c93c MS |
1870 | *local_got = (bfd_vma) -1; |
1871 | } | |
470b557a AK |
1872 | local_plt = elf_s390_local_plt (ibfd); |
1873 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
1874 | { | |
1875 | if (local_plt[i].plt.refcount > 0) | |
1876 | { | |
1877 | local_plt[i].plt.offset = htab->elf.iplt->size; | |
1878 | htab->elf.iplt->size += PLT_ENTRY_SIZE; | |
1879 | htab->elf.igotplt->size += GOT_ENTRY_SIZE; | |
1880 | htab->elf.irelplt->size += RELA_ENTRY_SIZE; | |
1881 | } | |
1882 | else | |
07d6d2b8 | 1883 | local_plt[i].plt.offset = (bfd_vma) -1; |
470b557a | 1884 | } |
0451c93c MS |
1885 | } |
1886 | ||
69fc87f1 MS |
1887 | if (htab->tls_ldm_got.refcount > 0) |
1888 | { | |
1889 | /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32 | |
1890 | relocs. */ | |
f41345a7 AK |
1891 | htab->tls_ldm_got.offset = htab->elf.sgot->size; |
1892 | htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE; | |
1893 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); | |
69fc87f1 MS |
1894 | } |
1895 | else | |
1896 | htab->tls_ldm_got.offset = -1; | |
1897 | ||
0451c93c MS |
1898 | /* Allocate global sym .plt and .got entries, and space for global |
1899 | sym dynamic relocs. */ | |
2c3fc389 | 1900 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
0451c93c MS |
1901 | |
1902 | /* We now have determined the sizes of the various dynamic sections. | |
1903 | Allocate memory for them. */ | |
0a1b45a2 | 1904 | relocs = false; |
0451c93c MS |
1905 | for (s = dynobj->sections; s != NULL; s = s->next) |
1906 | { | |
1907 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1908 | continue; | |
1909 | ||
f41345a7 AK |
1910 | if (s == htab->elf.splt |
1911 | || s == htab->elf.sgot | |
1912 | || s == htab->elf.sgotplt | |
9d19e4fd | 1913 | || s == htab->elf.sdynbss |
5474d94f | 1914 | || s == htab->elf.sdynrelro |
470b557a AK |
1915 | || s == htab->elf.iplt |
1916 | || s == htab->elf.igotplt | |
1917 | || s == htab->irelifunc) | |
0451c93c MS |
1918 | { |
1919 | /* Strip this section if we don't need it; see the | |
1920 | comment below. */ | |
a85d7ed0 | 1921 | } |
08dedd66 | 1922 | else if (startswith (bfd_section_name (s), ".rela")) |
0451c93c | 1923 | { |
eea6121a | 1924 | if (s->size != 0) |
0a1b45a2 | 1925 | relocs = true; |
ec338859 | 1926 | |
0451c93c MS |
1927 | /* We use the reloc_count field as a counter if we need |
1928 | to copy relocs into the output file. */ | |
1929 | s->reloc_count = 0; | |
1930 | } | |
1931 | else | |
a85d7ed0 NC |
1932 | { |
1933 | /* It's not one of our sections, so don't allocate space. */ | |
1934 | continue; | |
1935 | } | |
1936 | ||
eea6121a | 1937 | if (s->size == 0) |
a85d7ed0 | 1938 | { |
0451c93c MS |
1939 | /* If we don't need this section, strip it from the |
1940 | output file. This is to handle .rela.bss and | |
1941 | .rela.plt. We must create it in | |
1942 | create_dynamic_sections, because it must be created | |
1943 | before the linker maps input sections to output | |
1944 | sections. The linker does that before | |
1945 | adjust_dynamic_symbol is called, and it is that | |
1946 | function which decides whether anything needs to go | |
1947 | into these sections. */ | |
1948 | ||
8423293d | 1949 | s->flags |= SEC_EXCLUDE; |
a85d7ed0 NC |
1950 | continue; |
1951 | } | |
1952 | ||
c456f082 AM |
1953 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1954 | continue; | |
1955 | ||
0451c93c MS |
1956 | /* Allocate memory for the section contents. We use bfd_zalloc |
1957 | here in case unused entries are not reclaimed before the | |
1958 | section's contents are written out. This should not happen, | |
1959 | but this way if it does, we get a R_390_NONE reloc instead | |
1960 | of garbage. */ | |
eea6121a | 1961 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
0451c93c | 1962 | if (s->contents == NULL) |
0a1b45a2 | 1963 | return false; |
a85d7ed0 | 1964 | } |
ec338859 | 1965 | |
3084d7a2 | 1966 | return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs); |
a85d7ed0 NC |
1967 | } |
1968 | ||
69fc87f1 MS |
1969 | /* Return the base VMA address which should be subtracted from real addresses |
1970 | when resolving @dtpoff relocation. | |
1971 | This is PT_TLS segment p_vaddr. */ | |
1972 | ||
1973 | static bfd_vma | |
2c3fc389 | 1974 | dtpoff_base (struct bfd_link_info *info) |
69fc87f1 | 1975 | { |
e1918d23 AM |
1976 | /* If tls_sec is NULL, we should have signalled an error already. */ |
1977 | if (elf_hash_table (info)->tls_sec == NULL) | |
69fc87f1 | 1978 | return 0; |
e1918d23 | 1979 | return elf_hash_table (info)->tls_sec->vma; |
69fc87f1 MS |
1980 | } |
1981 | ||
1982 | /* Return the relocation value for @tpoff relocation | |
1983 | if STT_TLS virtual address is ADDRESS. */ | |
1984 | ||
1985 | static bfd_vma | |
2c3fc389 | 1986 | tpoff (struct bfd_link_info *info, bfd_vma address) |
69fc87f1 | 1987 | { |
e1918d23 | 1988 | struct elf_link_hash_table *htab = elf_hash_table (info); |
69fc87f1 | 1989 | |
e1918d23 AM |
1990 | /* If tls_sec is NULL, we should have signalled an error already. */ |
1991 | if (htab->tls_sec == NULL) | |
69fc87f1 | 1992 | return 0; |
e1918d23 | 1993 | return htab->tls_size + htab->tls_sec->vma - address; |
69fc87f1 MS |
1994 | } |
1995 | ||
1996 | /* Complain if TLS instruction relocation is against an invalid | |
1997 | instruction. */ | |
1998 | ||
1999 | static void | |
2c3fc389 NC |
2000 | invalid_tls_insn (bfd *input_bfd, |
2001 | asection *input_section, | |
2002 | Elf_Internal_Rela *rel) | |
69fc87f1 MS |
2003 | { |
2004 | reloc_howto_type *howto; | |
2005 | ||
2006 | howto = elf_howto_table + ELF32_R_TYPE (rel->r_info); | |
4eca0228 | 2007 | _bfd_error_handler |
695344c0 | 2008 | /* xgettext:c-format */ |
2dcf00ce | 2009 | (_("%pB(%pA+%#" PRIx64 "): invalid instruction for TLS relocation %s"), |
d003868e AM |
2010 | input_bfd, |
2011 | input_section, | |
2dcf00ce | 2012 | (uint64_t) rel->r_offset, |
69fc87f1 | 2013 | howto->name); |
77df2968 | 2014 | bfd_set_error (bfd_error_bad_value); |
69fc87f1 MS |
2015 | } |
2016 | ||
a85d7ed0 NC |
2017 | /* Relocate a 390 ELF section. */ |
2018 | ||
0f684201 | 2019 | static int |
2c3fc389 NC |
2020 | elf_s390_relocate_section (bfd *output_bfd, |
2021 | struct bfd_link_info *info, | |
2022 | bfd *input_bfd, | |
2023 | asection *input_section, | |
2024 | bfd_byte *contents, | |
2025 | Elf_Internal_Rela *relocs, | |
2026 | Elf_Internal_Sym *local_syms, | |
2027 | asection **local_sections) | |
a85d7ed0 | 2028 | { |
0451c93c | 2029 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
2030 | Elf_Internal_Shdr *symtab_hdr; |
2031 | struct elf_link_hash_entry **sym_hashes; | |
2032 | bfd_vma *local_got_offsets; | |
a85d7ed0 NC |
2033 | Elf_Internal_Rela *rel; |
2034 | Elf_Internal_Rela *relend; | |
2035 | ||
7af5d5c4 AM |
2036 | if (!is_s390_elf (input_bfd)) |
2037 | { | |
2038 | bfd_set_error (bfd_error_wrong_format); | |
0a1b45a2 | 2039 | return false; |
7af5d5c4 | 2040 | } |
0ffa91dd | 2041 | |
0451c93c | 2042 | htab = elf_s390_hash_table (info); |
0ffa91dd | 2043 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
a85d7ed0 NC |
2044 | sym_hashes = elf_sym_hashes (input_bfd); |
2045 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2046 | ||
a85d7ed0 NC |
2047 | rel = relocs; |
2048 | relend = relocs + input_section->reloc_count; | |
2049 | for (; rel < relend; rel++) | |
2050 | { | |
5236c819 | 2051 | unsigned int r_type; |
a85d7ed0 NC |
2052 | reloc_howto_type *howto; |
2053 | unsigned long r_symndx; | |
2054 | struct elf_link_hash_entry *h; | |
2055 | Elf_Internal_Sym *sym; | |
2056 | asection *sec; | |
0451c93c | 2057 | bfd_vma off; |
a85d7ed0 | 2058 | bfd_vma relocation; |
0a1b45a2 | 2059 | bool unresolved_reloc; |
a85d7ed0 | 2060 | bfd_reloc_status_type r; |
69fc87f1 | 2061 | int tls_type; |
470b557a | 2062 | asection *base_got = htab->elf.sgot; |
0a1b45a2 | 2063 | bool resolved_to_zero; |
ec338859 | 2064 | |
a85d7ed0 NC |
2065 | r_type = ELF32_R_TYPE (rel->r_info); |
2066 | if (r_type == (int) R_390_GNU_VTINHERIT | |
26e41594 AM |
2067 | || r_type == (int) R_390_GNU_VTENTRY) |
2068 | continue; | |
5236c819 | 2069 | if (r_type >= (int) R_390_max) |
a85d7ed0 NC |
2070 | { |
2071 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 2072 | return false; |
a85d7ed0 | 2073 | } |
ec338859 | 2074 | |
b491616a | 2075 | howto = elf_howto_table + r_type; |
a85d7ed0 | 2076 | r_symndx = ELF32_R_SYM (rel->r_info); |
5236c819 | 2077 | |
a85d7ed0 NC |
2078 | h = NULL; |
2079 | sym = NULL; | |
2080 | sec = NULL; | |
0a1b45a2 | 2081 | unresolved_reloc = false; |
a85d7ed0 NC |
2082 | if (r_symndx < symtab_hdr->sh_info) |
2083 | { | |
2084 | sym = local_syms + r_symndx; | |
2085 | sec = local_sections[r_symndx]; | |
470b557a AK |
2086 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
2087 | { | |
2088 | struct plt_entry *local_plt = elf_s390_local_plt (input_bfd); | |
2089 | if (local_plt == NULL) | |
0a1b45a2 | 2090 | return false; |
470b557a AK |
2091 | |
2092 | /* Address of the PLT slot. */ | |
2093 | relocation = (htab->elf.iplt->output_section->vma | |
2094 | + htab->elf.iplt->output_offset | |
2095 | + local_plt[r_symndx].plt.offset); | |
2096 | ||
2097 | switch (r_type) | |
2098 | { | |
31db78f6 AK |
2099 | case R_390_PLTOFF16: |
2100 | case R_390_PLTOFF32: | |
2101 | relocation -= htab->elf.sgot->output_section->vma; | |
2102 | break; | |
470b557a AK |
2103 | case R_390_GOTPLT12: |
2104 | case R_390_GOTPLT16: | |
2105 | case R_390_GOTPLT20: | |
2106 | case R_390_GOTPLT32: | |
2107 | case R_390_GOTPLTENT: | |
2108 | case R_390_GOT12: | |
2109 | case R_390_GOT16: | |
2110 | case R_390_GOT20: | |
2111 | case R_390_GOT32: | |
2112 | case R_390_GOTENT: | |
2113 | { | |
2114 | /* Write the PLT slot address into the GOT slot. */ | |
2115 | bfd_put_32 (output_bfd, relocation, | |
2116 | htab->elf.sgot->contents + | |
2117 | local_got_offsets[r_symndx]); | |
2118 | relocation = (local_got_offsets[r_symndx] + | |
2119 | htab->elf.sgot->output_offset); | |
2120 | ||
2121 | if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT) | |
2122 | relocation += htab->elf.sgot->output_section->vma; | |
2123 | break; | |
2124 | } | |
2125 | default: | |
2126 | break; | |
2127 | } | |
2128 | /* The output section is needed later in | |
2129 | finish_dynamic_section when creating the dynamic | |
2130 | relocation. */ | |
2131 | local_plt[r_symndx].sec = sec; | |
2132 | goto do_relocation; | |
2133 | } | |
2134 | else | |
2135 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
a85d7ed0 NC |
2136 | } |
2137 | else | |
2138 | { | |
0a1b45a2 AM |
2139 | bool warned ATTRIBUTE_UNUSED; |
2140 | bool ignored ATTRIBUTE_UNUSED; | |
ec338859 | 2141 | |
b2a8e766 AM |
2142 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2143 | r_symndx, symtab_hdr, sym_hashes, | |
2144 | h, sec, relocation, | |
62d887d4 | 2145 | unresolved_reloc, warned, ignored); |
a85d7ed0 | 2146 | } |
ec338859 | 2147 | |
dbaa2011 | 2148 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 2149 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 2150 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 2151 | |
0e1862bb | 2152 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
2153 | continue; |
2154 | ||
b27bb18f L |
2155 | resolved_to_zero = (h != NULL |
2156 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
2157 | ||
a85d7ed0 NC |
2158 | switch (r_type) |
2159 | { | |
5236c819 MS |
2160 | case R_390_GOTPLT12: |
2161 | case R_390_GOTPLT16: | |
bd1ea41b | 2162 | case R_390_GOTPLT20: |
5236c819 MS |
2163 | case R_390_GOTPLT32: |
2164 | case R_390_GOTPLTENT: | |
2165 | /* There are three cases for a GOTPLT relocation. 1) The | |
2166 | relocation is against the jump slot entry of a plt that | |
2167 | will get emitted to the output file. 2) The relocation | |
2168 | is against the jump slot of a plt entry that has been | |
2169 | removed. elf_s390_adjust_gotplt has created a GOT entry | |
2170 | as replacement. 3) The relocation is against a local symbol. | |
2171 | Cases 2) and 3) are the same as the GOT relocation code | |
2172 | so we just have to test for case 1 and fall through for | |
2173 | the other two. */ | |
2174 | if (h != NULL && h->plt.offset != (bfd_vma) -1) | |
2175 | { | |
2176 | bfd_vma plt_index; | |
2177 | ||
470b557a AK |
2178 | if (s390_is_ifunc_symbol_p (h)) |
2179 | { | |
2180 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; | |
2181 | relocation = (plt_index * GOT_ENTRY_SIZE + | |
2182 | htab->elf.igotplt->output_offset); | |
2183 | if (r_type == R_390_GOTPLTENT) | |
2184 | relocation += htab->elf.igotplt->output_section->vma; | |
2185 | } | |
2186 | else | |
2187 | { | |
2188 | /* Calc. index no. | |
2189 | Current offset - size first entry / entry size. */ | |
2190 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / | |
2191 | PLT_ENTRY_SIZE; | |
2192 | ||
2193 | /* Offset in GOT is PLT index plus GOT headers(3) | |
2194 | times 4, addr & GOT addr. */ | |
2195 | relocation = (plt_index + 3) * GOT_ENTRY_SIZE; | |
2196 | if (r_type == R_390_GOTPLTENT) | |
2197 | relocation += htab->elf.sgot->output_section->vma; | |
2198 | } | |
0a1b45a2 | 2199 | unresolved_reloc = false; |
5236c819 | 2200 | |
5236c819 MS |
2201 | } |
2202 | /* Fall through. */ | |
2203 | ||
26e41594 AM |
2204 | case R_390_GOT12: |
2205 | case R_390_GOT16: | |
bd1ea41b | 2206 | case R_390_GOT20: |
26e41594 | 2207 | case R_390_GOT32: |
befc3abb | 2208 | case R_390_GOTENT: |
26e41594 AM |
2209 | /* Relocation is to the entry for this symbol in the global |
2210 | offset table. */ | |
470b557a | 2211 | if (base_got == NULL) |
0451c93c | 2212 | abort (); |
ec338859 | 2213 | |
26e41594 AM |
2214 | if (h != NULL) |
2215 | { | |
0a1b45a2 | 2216 | bool dyn; |
ec338859 | 2217 | |
26e41594 | 2218 | off = h->got.offset; |
0451c93c | 2219 | dyn = htab->elf.dynamic_sections_created; |
470b557a AK |
2220 | |
2221 | if (s390_is_ifunc_symbol_p (h)) | |
2222 | { | |
2223 | BFD_ASSERT (h->plt.offset != (bfd_vma) -1); | |
2224 | if (off == (bfd_vma)-1) | |
2225 | { | |
2226 | /* No explicit GOT usage so redirect to the | |
2227 | got.iplt slot. */ | |
2228 | base_got = htab->elf.igotplt; | |
2229 | off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE; | |
2230 | } | |
2231 | else | |
2232 | { | |
2233 | /* Explicit GOT slots must contain the address | |
2234 | of the PLT slot. This will be handled in | |
2235 | finish_dynamic_symbol. */ | |
2236 | } | |
2237 | } | |
0e1862bb L |
2238 | else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
2239 | bfd_link_pic (info), | |
2240 | h) | |
2241 | || (bfd_link_pic (info) | |
470b557a AK |
2242 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
2243 | || (ELF_ST_VISIBILITY (h->other) | |
2244 | && h->root.type == bfd_link_hash_undefweak)) | |
2245 | ||
26e41594 AM |
2246 | { |
2247 | /* This is actually a static link, or it is a | |
2248 | -Bsymbolic link and the symbol is defined | |
2249 | locally, or the symbol was forced to be local | |
2250 | because of a version file. We must initialize | |
2251 | this entry in the global offset table. Since the | |
2252 | offset must always be a multiple of 2, we use the | |
2253 | least significant bit to record whether we have | |
2254 | initialized it already. | |
2255 | ||
2256 | When doing a dynamic link, we create a .rel.got | |
2257 | relocation entry to initialize the value. This | |
2258 | is done in the finish_dynamic_symbol routine. */ | |
2259 | if ((off & 1) != 0) | |
2260 | off &= ~1; | |
2261 | else | |
2262 | { | |
a85d7ed0 | 2263 | bfd_put_32 (output_bfd, relocation, |
470b557a | 2264 | base_got->contents + off); |
26e41594 AM |
2265 | h->got.offset |= 1; |
2266 | } | |
a63cc5f7 AK |
2267 | |
2268 | if ((h->def_regular | |
0e1862bb | 2269 | && bfd_link_pic (info) |
a63cc5f7 AK |
2270 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
2271 | /* lrl rx,sym@GOTENT -> larl rx, sym */ | |
2272 | && ((r_type == R_390_GOTENT | |
2273 | && (bfd_get_16 (input_bfd, | |
2274 | contents + rel->r_offset - 2) | |
2275 | & 0xff0f) == 0xc40d) | |
2276 | /* ly rx, sym@GOT(r12) -> larl rx, sym */ | |
2277 | || (r_type == R_390_GOT20 | |
2278 | && (bfd_get_32 (input_bfd, | |
2279 | contents + rel->r_offset - 2) | |
2280 | & 0xff00f000) == 0xe300c000 | |
2281 | && bfd_get_8 (input_bfd, | |
2282 | contents + rel->r_offset + 3) == 0x58))) | |
2283 | { | |
2284 | unsigned short new_insn = | |
2285 | (0xc000 | (bfd_get_8 (input_bfd, | |
2286 | contents + rel->r_offset - 1) & 0xf0)); | |
2287 | bfd_put_16 (output_bfd, new_insn, | |
2288 | contents + rel->r_offset - 2); | |
2289 | r_type = R_390_PC32DBL; | |
2290 | rel->r_addend = 2; | |
2291 | howto = elf_howto_table + r_type; | |
2292 | relocation = h->root.u.def.value | |
2293 | + h->root.u.def.section->output_section->vma | |
2294 | + h->root.u.def.section->output_offset; | |
2295 | goto do_relocation; | |
2296 | } | |
26e41594 | 2297 | } |
0451c93c | 2298 | else |
0a1b45a2 | 2299 | unresolved_reloc = false; |
26e41594 AM |
2300 | } |
2301 | else | |
2302 | { | |
0451c93c MS |
2303 | if (local_got_offsets == NULL) |
2304 | abort (); | |
a85d7ed0 | 2305 | |
26e41594 | 2306 | off = local_got_offsets[r_symndx]; |
a85d7ed0 | 2307 | |
26e41594 AM |
2308 | /* The offset must always be a multiple of 4. We use |
2309 | the least significant bit to record whether we have | |
2310 | already generated the necessary reloc. */ | |
2311 | if ((off & 1) != 0) | |
2312 | off &= ~1; | |
2313 | else | |
2314 | { | |
2315 | bfd_put_32 (output_bfd, relocation, | |
f41345a7 | 2316 | htab->elf.sgot->contents + off); |
a85d7ed0 | 2317 | |
0e1862bb | 2318 | if (bfd_link_pic (info)) |
26e41594 AM |
2319 | { |
2320 | asection *srelgot; | |
2321 | Elf_Internal_Rela outrel; | |
947216bf | 2322 | bfd_byte *loc; |
a85d7ed0 | 2323 | |
f41345a7 | 2324 | srelgot = htab->elf.srelgot; |
0451c93c MS |
2325 | if (srelgot == NULL) |
2326 | abort (); | |
a85d7ed0 | 2327 | |
f41345a7 AK |
2328 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2329 | + htab->elf.sgot->output_offset | |
26e41594 AM |
2330 | + off); |
2331 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
a85d7ed0 | 2332 | outrel.r_addend = relocation; |
947216bf AM |
2333 | loc = srelgot->contents; |
2334 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
26e41594 AM |
2335 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
2336 | } | |
a85d7ed0 | 2337 | |
26e41594 AM |
2338 | local_got_offsets[r_symndx] |= 1; |
2339 | } | |
2340 | } | |
a85d7ed0 | 2341 | |
0451c93c MS |
2342 | if (off >= (bfd_vma) -2) |
2343 | abort (); | |
a85d7ed0 | 2344 | |
470b557a | 2345 | relocation = base_got->output_offset + off; |
befc3abb | 2346 | |
ae9a127f NC |
2347 | /* For @GOTENT the relocation is against the offset between |
2348 | the instruction and the symbols entry in the GOT and not | |
2349 | between the start of the GOT and the symbols entry. We | |
2350 | add the vma of the GOT to get the correct value. */ | |
5236c819 MS |
2351 | if ( r_type == R_390_GOTENT |
2352 | || r_type == R_390_GOTPLTENT) | |
470b557a | 2353 | relocation += base_got->output_section->vma; |
befc3abb | 2354 | |
26e41594 | 2355 | break; |
dc810e39 | 2356 | |
5236c819 | 2357 | case R_390_GOTOFF16: |
26e41594 AM |
2358 | case R_390_GOTOFF32: |
2359 | /* Relocation is relative to the start of the global offset | |
2360 | table. */ | |
2361 | ||
01a53584 AK |
2362 | if (h != NULL |
2363 | && s390_is_ifunc_symbol_p (h) | |
2364 | && h->def_regular | |
2365 | && !bfd_link_executable (info)) | |
2366 | { | |
2367 | relocation = (htab->elf.iplt->output_section->vma | |
2368 | + htab->elf.iplt->output_offset | |
2369 | + h->plt.offset | |
2370 | - htab->elf.sgot->output_section->vma); | |
2371 | goto do_relocation; | |
2372 | } | |
2373 | ||
26e41594 AM |
2374 | /* Note that sgot->output_offset is not involved in this |
2375 | calculation. We always want the start of .got. If we | |
2376 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
2377 | permitted by the ABI, we might have to change this | |
2378 | calculation. */ | |
f41345a7 | 2379 | relocation -= htab->elf.sgot->output_section->vma; |
26e41594 AM |
2380 | break; |
2381 | ||
2382 | case R_390_GOTPC: | |
befc3abb | 2383 | case R_390_GOTPCDBL: |
26e41594 | 2384 | /* Use global offset table as symbol value. */ |
f41345a7 | 2385 | relocation = htab->elf.sgot->output_section->vma; |
0a1b45a2 | 2386 | unresolved_reloc = false; |
26e41594 | 2387 | break; |
a85d7ed0 | 2388 | |
fb798c50 | 2389 | case R_390_PLT12DBL: |
26e41594 | 2390 | case R_390_PLT16DBL: |
fb798c50 | 2391 | case R_390_PLT24DBL: |
26e41594 AM |
2392 | case R_390_PLT32DBL: |
2393 | case R_390_PLT32: | |
2394 | /* Relocation is to the entry for this symbol in the | |
2395 | procedure linkage table. */ | |
a85d7ed0 | 2396 | |
26e41594 AM |
2397 | /* Resolve a PLT32 reloc against a local symbol directly, |
2398 | without using the procedure linkage table. */ | |
2399 | if (h == NULL) | |
2400 | break; | |
a85d7ed0 | 2401 | |
26e41594 | 2402 | if (h->plt.offset == (bfd_vma) -1 |
470b557a | 2403 | || (htab->elf.splt == NULL && htab->elf.iplt == NULL)) |
26e41594 AM |
2404 | { |
2405 | /* We didn't make a PLT entry for this symbol. This | |
2406 | happens when statically linking PIC code, or when | |
2407 | using -Bsymbolic. */ | |
2408 | break; | |
2409 | } | |
2410 | ||
470b557a AK |
2411 | if (s390_is_ifunc_symbol_p (h)) |
2412 | relocation = (htab->elf.iplt->output_section->vma | |
07d6d2b8 | 2413 | + htab->elf.iplt->output_offset |
470b557a AK |
2414 | + h->plt.offset); |
2415 | else | |
2416 | relocation = (htab->elf.splt->output_section->vma | |
2417 | + htab->elf.splt->output_offset | |
2418 | + h->plt.offset); | |
0a1b45a2 | 2419 | unresolved_reloc = false; |
26e41594 | 2420 | break; |
a85d7ed0 | 2421 | |
5236c819 MS |
2422 | case R_390_PLTOFF16: |
2423 | case R_390_PLTOFF32: | |
26e41594 AM |
2424 | /* Relocation is to the entry for this symbol in the |
2425 | procedure linkage table relative to the start of the GOT. */ | |
5236c819 MS |
2426 | |
2427 | /* For local symbols or if we didn't make a PLT entry for | |
2428 | this symbol resolve the symbol directly. */ | |
31db78f6 | 2429 | if (h == NULL |
5236c819 | 2430 | || h->plt.offset == (bfd_vma) -1 |
31db78f6 | 2431 | || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h))) |
5236c819 | 2432 | { |
f41345a7 | 2433 | relocation -= htab->elf.sgot->output_section->vma; |
5236c819 MS |
2434 | break; |
2435 | } | |
2436 | ||
470b557a AK |
2437 | if (s390_is_ifunc_symbol_p (h)) |
2438 | relocation = (htab->elf.iplt->output_section->vma | |
2439 | + htab->elf.iplt->output_offset | |
2440 | + h->plt.offset | |
2441 | - htab->elf.sgot->output_section->vma); | |
2442 | else | |
2443 | relocation = (htab->elf.splt->output_section->vma | |
2444 | + htab->elf.splt->output_offset | |
2445 | + h->plt.offset | |
2446 | - htab->elf.sgot->output_section->vma); | |
0a1b45a2 | 2447 | unresolved_reloc = false; |
26e41594 AM |
2448 | break; |
2449 | ||
26e41594 | 2450 | case R_390_PC16: |
fb798c50 | 2451 | case R_390_PC12DBL: |
26e41594 | 2452 | case R_390_PC16DBL: |
fb798c50 | 2453 | case R_390_PC24DBL: |
26e41594 AM |
2454 | case R_390_PC32DBL: |
2455 | case R_390_PC32: | |
99ba5125 AK |
2456 | if (h != NULL |
2457 | && s390_is_ifunc_symbol_p (h) | |
2458 | && h->def_regular | |
2459 | && !bfd_link_executable (info)) | |
2460 | { | |
2461 | /* This will not work our if the function does not | |
2462 | happen to set up the GOT pointer for some other | |
2463 | reason. 31 bit PLT entries require r12 to hold the | |
2464 | GOT pointer. | |
2465 | FIXME: Implement an errorcheck. | |
2466 | NOTE: It will work when brasl is not available | |
2467 | (e.g. with -m31 -march=g5) since a local function | |
2468 | call then does use GOTOFF which implies r12 being set | |
2469 | up. */ | |
2470 | relocation = (htab->elf.iplt->output_section->vma | |
2471 | + htab->elf.iplt->output_offset | |
2472 | + h ->plt.offset); | |
2473 | goto do_relocation; | |
2474 | } | |
1a0670f3 | 2475 | /* Fall through. */ |
99ba5125 AK |
2476 | |
2477 | case R_390_8: | |
2478 | case R_390_16: | |
2479 | case R_390_32: | |
f657f8c4 NC |
2480 | if ((input_section->flags & SEC_ALLOC) == 0) |
2481 | break; | |
2482 | ||
470b557a AK |
2483 | if (h != NULL |
2484 | && s390_is_ifunc_symbol_p (h) | |
2485 | && h->def_regular) | |
2486 | { | |
d7ab4911 | 2487 | if (!bfd_link_pic (info)) |
470b557a AK |
2488 | { |
2489 | /* For a non-shared object STT_GNU_IFUNC symbol must | |
2490 | go through PLT. */ | |
2491 | relocation = (htab->elf.iplt->output_section->vma | |
2492 | + htab->elf.iplt->output_offset | |
2493 | + h ->plt.offset); | |
2494 | goto do_relocation; | |
2495 | } | |
2496 | else | |
2497 | { | |
2498 | /* For shared objects a runtime relocation is needed. */ | |
2499 | ||
2500 | Elf_Internal_Rela outrel; | |
2501 | asection *sreloc; | |
2502 | ||
2503 | /* Need a dynamic relocation to get the real function | |
2504 | address. */ | |
2505 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
2506 | info, | |
2507 | input_section, | |
2508 | rel->r_offset); | |
2509 | if (outrel.r_offset == (bfd_vma) -1 | |
2510 | || outrel.r_offset == (bfd_vma) -2) | |
2511 | abort (); | |
2512 | ||
2513 | outrel.r_offset += (input_section->output_section->vma | |
2514 | + input_section->output_offset); | |
2515 | ||
2516 | if (h->dynindx == -1 | |
2517 | || h->forced_local | |
0e1862bb | 2518 | || bfd_link_executable (info)) |
470b557a AK |
2519 | { |
2520 | /* This symbol is resolved locally. */ | |
2521 | outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE); | |
2522 | outrel.r_addend = (h->root.u.def.value | |
2523 | + h->root.u.def.section->output_section->vma | |
2524 | + h->root.u.def.section->output_offset); | |
2525 | } | |
2526 | else | |
2527 | { | |
2528 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
2529 | outrel.r_addend = 0; | |
2530 | } | |
2531 | ||
2532 | sreloc = htab->elf.irelifunc; | |
2533 | elf_append_rela (output_bfd, sreloc, &outrel); | |
2534 | ||
2535 | /* If this reloc is against an external symbol, we | |
2536 | do not want to fiddle with the addend. Otherwise, | |
2537 | we need to include the symbol value so that it | |
2538 | becomes an addend for the dynamic reloc. For an | |
2539 | internal symbol, we have updated addend. */ | |
2540 | continue; | |
2541 | } | |
2542 | } | |
2543 | ||
0e1862bb | 2544 | if ((bfd_link_pic (info) |
82058a73 | 2545 | && (h == NULL |
b27bb18f L |
2546 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2547 | && !resolved_to_zero) | |
82058a73 | 2548 | || h->root.type != bfd_link_hash_undefweak) |
0451c93c | 2549 | && ((r_type != R_390_PC16 |
fb798c50 | 2550 | && r_type != R_390_PC12DBL |
0451c93c | 2551 | && r_type != R_390_PC16DBL |
fb798c50 | 2552 | && r_type != R_390_PC24DBL |
befc3abb | 2553 | && r_type != R_390_PC32DBL |
0451c93c | 2554 | && r_type != R_390_PC32) |
8c21ca21 | 2555 | || !SYMBOL_CALLS_LOCAL (info, h))) |
64285810 | 2556 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 2557 | && !bfd_link_pic (info) |
0451c93c MS |
2558 | && h != NULL |
2559 | && h->dynindx != -1 | |
f5385ebf AM |
2560 | && !h->non_got_ref |
2561 | && ((h->def_dynamic | |
2562 | && !h->def_regular) | |
0451c93c MS |
2563 | || h->root.type == bfd_link_hash_undefweak |
2564 | || h->root.type == bfd_link_hash_undefined))) | |
26e41594 AM |
2565 | { |
2566 | Elf_Internal_Rela outrel; | |
0a1b45a2 | 2567 | bool skip, relocate; |
0451c93c | 2568 | asection *sreloc; |
947216bf | 2569 | bfd_byte *loc; |
ec338859 | 2570 | |
0451c93c MS |
2571 | /* When generating a shared object, these relocations |
2572 | are copied into the output file to be resolved at run | |
2573 | time. */ | |
ec338859 | 2574 | |
0a1b45a2 AM |
2575 | skip = false; |
2576 | relocate = false; | |
ec338859 | 2577 | |
c629eae0 JJ |
2578 | outrel.r_offset = |
2579 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2580 | rel->r_offset); | |
2581 | if (outrel.r_offset == (bfd_vma) -1) | |
0a1b45a2 | 2582 | skip = true; |
0bb2d96a | 2583 | else if (outrel.r_offset == (bfd_vma) -2) |
0a1b45a2 | 2584 | skip = true, relocate = true; |
26e41594 AM |
2585 | outrel.r_offset += (input_section->output_section->vma |
2586 | + input_section->output_offset); | |
ec338859 | 2587 | |
26e41594 | 2588 | if (skip) |
0bb2d96a | 2589 | memset (&outrel, 0, sizeof outrel); |
26e41594 | 2590 | else if (h != NULL |
0451c93c MS |
2591 | && h->dynindx != -1 |
2592 | && (r_type == R_390_PC16 | |
fb798c50 | 2593 | || r_type == R_390_PC12DBL |
0451c93c | 2594 | || r_type == R_390_PC16DBL |
fb798c50 | 2595 | || r_type == R_390_PC24DBL |
befc3abb | 2596 | || r_type == R_390_PC32DBL |
0451c93c | 2597 | || r_type == R_390_PC32 |
0e1862bb | 2598 | || !bfd_link_pic (info) |
8c21ca21 | 2599 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 2600 | || !h->def_regular)) |
26e41594 AM |
2601 | { |
2602 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
27018c3f | 2603 | outrel.r_addend = rel->r_addend; |
26e41594 AM |
2604 | } |
2605 | else | |
2606 | { | |
0451c93c | 2607 | /* This symbol is local, or marked to become local. */ |
90ced0dd | 2608 | outrel.r_addend = relocation + rel->r_addend; |
b5727d75 MS |
2609 | if (r_type == R_390_32) |
2610 | { | |
0a1b45a2 | 2611 | relocate = true; |
b5727d75 | 2612 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); |
b5727d75 MS |
2613 | } |
2614 | else | |
2615 | { | |
2616 | long sindx; | |
2617 | ||
90ced0dd | 2618 | if (bfd_is_abs_section (sec)) |
b5727d75 MS |
2619 | sindx = 0; |
2620 | else if (sec == NULL || sec->owner == NULL) | |
2621 | { | |
2622 | bfd_set_error(bfd_error_bad_value); | |
0a1b45a2 | 2623 | return false; |
b5727d75 MS |
2624 | } |
2625 | else | |
2626 | { | |
2627 | asection *osec; | |
2628 | ||
2629 | osec = sec->output_section; | |
2630 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
2631 | if (sindx == 0) |
2632 | { | |
2633 | osec = htab->elf.text_index_section; | |
2634 | sindx = elf_section_data (osec)->dynindx; | |
2635 | } | |
2636 | BFD_ASSERT (sindx != 0); | |
90ced0dd MS |
2637 | |
2638 | /* We are turning this relocation into one | |
2639 | against a section symbol, so subtract out | |
2640 | the output section's address but not the | |
2641 | offset of the input section in the output | |
2642 | section. */ | |
90ced0dd | 2643 | outrel.r_addend -= osec->vma; |
b5727d75 MS |
2644 | } |
2645 | outrel.r_info = ELF32_R_INFO (sindx, r_type); | |
b5727d75 | 2646 | } |
26e41594 | 2647 | } |
ec338859 | 2648 | |
0451c93c MS |
2649 | sreloc = elf_section_data (input_section)->sreloc; |
2650 | if (sreloc == NULL) | |
2651 | abort (); | |
ec338859 | 2652 | |
947216bf AM |
2653 | loc = sreloc->contents; |
2654 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 2655 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
ec338859 | 2656 | |
26e41594 AM |
2657 | /* If this reloc is against an external symbol, we do |
2658 | not want to fiddle with the addend. Otherwise, we | |
2659 | need to include the symbol value so that it becomes | |
2660 | an addend for the dynamic reloc. */ | |
2661 | if (! relocate) | |
2662 | continue; | |
2663 | } | |
0451c93c | 2664 | break; |
ec338859 | 2665 | |
69fc87f1 MS |
2666 | /* Relocations for tls literal pool entries. */ |
2667 | case R_390_TLS_IE32: | |
0e1862bb | 2668 | if (bfd_link_pic (info)) |
69fc87f1 MS |
2669 | { |
2670 | Elf_Internal_Rela outrel; | |
2671 | asection *sreloc; | |
2672 | bfd_byte *loc; | |
2673 | ||
2674 | outrel.r_offset = rel->r_offset | |
2675 | + input_section->output_section->vma | |
2676 | + input_section->output_offset; | |
2677 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
2678 | sreloc = elf_section_data (input_section)->sreloc; | |
2679 | if (sreloc == NULL) | |
2680 | abort (); | |
2681 | loc = sreloc->contents; | |
2682 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
2683 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
2684 | } | |
ae9a127f | 2685 | /* Fall through. */ |
69fc87f1 MS |
2686 | |
2687 | case R_390_TLS_GD32: | |
2688 | case R_390_TLS_GOTIE32: | |
2689 | r_type = elf_s390_tls_transition (info, r_type, h == NULL); | |
2690 | tls_type = GOT_UNKNOWN; | |
2691 | if (h == NULL && local_got_offsets) | |
2692 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
2693 | else if (h != NULL) | |
2694 | { | |
2695 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
0e1862bb L |
2696 | if (!bfd_link_pic (info) |
2697 | && h->dynindx == -1 | |
2698 | && tls_type >= GOT_TLS_IE) | |
69fc87f1 MS |
2699 | r_type = R_390_TLS_LE32; |
2700 | } | |
2701 | if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE) | |
2702 | r_type = R_390_TLS_IE32; | |
2703 | ||
2704 | if (r_type == R_390_TLS_LE32) | |
2705 | { | |
2706 | /* This relocation gets optimized away by the local exec | |
2707 | access optimization. */ | |
2708 | BFD_ASSERT (! unresolved_reloc); | |
2709 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
2710 | contents + rel->r_offset); | |
2711 | continue; | |
2712 | } | |
2713 | ||
f41345a7 | 2714 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2715 | abort (); |
2716 | ||
2717 | if (h != NULL) | |
2718 | off = h->got.offset; | |
2719 | else | |
2720 | { | |
2721 | if (local_got_offsets == NULL) | |
2722 | abort (); | |
2723 | ||
2724 | off = local_got_offsets[r_symndx]; | |
2725 | } | |
2726 | ||
2727 | emit_tls_relocs: | |
2728 | ||
2729 | if ((off & 1) != 0) | |
2730 | off &= ~1; | |
26e41594 | 2731 | else |
69fc87f1 MS |
2732 | { |
2733 | Elf_Internal_Rela outrel; | |
2734 | bfd_byte *loc; | |
2735 | int dr_type, indx; | |
2736 | ||
f41345a7 | 2737 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2738 | abort (); |
2739 | ||
f41345a7 AK |
2740 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2741 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2742 | |
2743 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
2744 | if (r_type == R_390_TLS_GD32) | |
2745 | dr_type = R_390_TLS_DTPMOD; | |
2746 | else | |
2747 | dr_type = R_390_TLS_TPOFF; | |
2748 | if (dr_type == R_390_TLS_TPOFF && indx == 0) | |
2749 | outrel.r_addend = relocation - dtpoff_base (info); | |
2750 | else | |
2751 | outrel.r_addend = 0; | |
2752 | outrel.r_info = ELF32_R_INFO (indx, dr_type); | |
f41345a7 AK |
2753 | loc = htab->elf.srelgot->contents; |
2754 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
2755 | * sizeof (Elf32_External_Rela); |
2756 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
2757 | ||
2758 | if (r_type == R_390_TLS_GD32) | |
2759 | { | |
2760 | if (indx == 0) | |
2761 | { | |
26e41594 | 2762 | BFD_ASSERT (! unresolved_reloc); |
69fc87f1 MS |
2763 | bfd_put_32 (output_bfd, |
2764 | relocation - dtpoff_base (info), | |
f41345a7 | 2765 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2766 | } |
2767 | else | |
2768 | { | |
2769 | outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF); | |
2770 | outrel.r_offset += GOT_ENTRY_SIZE; | |
2771 | outrel.r_addend = 0; | |
f41345a7 | 2772 | htab->elf.srelgot->reloc_count++; |
69fc87f1 MS |
2773 | loc += sizeof (Elf32_External_Rela); |
2774 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
2775 | } | |
2776 | } | |
2777 | ||
2778 | if (h != NULL) | |
2779 | h->got.offset |= 1; | |
2780 | else | |
2781 | local_got_offsets[r_symndx] |= 1; | |
2782 | } | |
2783 | ||
2784 | if (off >= (bfd_vma) -2) | |
2785 | abort (); | |
2786 | if (r_type == ELF32_R_TYPE (rel->r_info)) | |
2787 | { | |
f41345a7 | 2788 | relocation = htab->elf.sgot->output_offset + off; |
69fc87f1 | 2789 | if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT) |
f41345a7 | 2790 | relocation += htab->elf.sgot->output_section->vma; |
0a1b45a2 | 2791 | unresolved_reloc = false; |
69fc87f1 MS |
2792 | } |
2793 | else | |
2794 | { | |
f41345a7 | 2795 | bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off, |
69fc87f1 MS |
2796 | contents + rel->r_offset); |
2797 | continue; | |
2798 | } | |
2799 | break; | |
2800 | ||
2801 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 2802 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
2803 | case R_390_TLS_IEENT: |
2804 | if (h == NULL) | |
2805 | { | |
2806 | if (local_got_offsets == NULL) | |
2807 | abort(); | |
2808 | off = local_got_offsets[r_symndx]; | |
0e1862bb | 2809 | if (bfd_link_pic (info)) |
69fc87f1 MS |
2810 | goto emit_tls_relocs; |
2811 | } | |
2812 | else | |
2813 | { | |
2814 | off = h->got.offset; | |
2815 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
0e1862bb L |
2816 | if (bfd_link_pic (info) |
2817 | || h->dynindx != -1 | |
2818 | || tls_type < GOT_TLS_IE) | |
69fc87f1 MS |
2819 | goto emit_tls_relocs; |
2820 | } | |
2821 | ||
f41345a7 | 2822 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2823 | abort (); |
2824 | ||
2825 | BFD_ASSERT (! unresolved_reloc); | |
2826 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
f41345a7 AK |
2827 | htab->elf.sgot->contents + off); |
2828 | relocation = htab->elf.sgot->output_offset + off; | |
69fc87f1 | 2829 | if (r_type == R_390_TLS_IEENT) |
f41345a7 | 2830 | relocation += htab->elf.sgot->output_section->vma; |
0a1b45a2 | 2831 | unresolved_reloc = false; |
69fc87f1 MS |
2832 | break; |
2833 | ||
2834 | case R_390_TLS_LDM32: | |
0e1862bb | 2835 | if (! bfd_link_pic (info)) |
69fc87f1 MS |
2836 | /* The literal pool entry this relocation refers to gets ignored |
2837 | by the optimized code of the local exec model. Do nothing | |
2838 | and the value will turn out zero. */ | |
2839 | continue; | |
2840 | ||
f41345a7 | 2841 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2842 | abort (); |
2843 | ||
2844 | off = htab->tls_ldm_got.offset; | |
2845 | if (off & 1) | |
2846 | off &= ~1; | |
2847 | else | |
2848 | { | |
2849 | Elf_Internal_Rela outrel; | |
2850 | bfd_byte *loc; | |
2851 | ||
f41345a7 | 2852 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2853 | abort (); |
2854 | ||
f41345a7 AK |
2855 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2856 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2857 | |
2858 | bfd_put_32 (output_bfd, 0, | |
f41345a7 | 2859 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2860 | outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD); |
2861 | outrel.r_addend = 0; | |
f41345a7 AK |
2862 | loc = htab->elf.srelgot->contents; |
2863 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
2864 | * sizeof (Elf32_External_Rela); |
2865 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
2866 | htab->tls_ldm_got.offset |= 1; | |
2867 | } | |
f41345a7 | 2868 | relocation = htab->elf.sgot->output_offset + off; |
0a1b45a2 | 2869 | unresolved_reloc = false; |
69fc87f1 MS |
2870 | break; |
2871 | ||
2872 | case R_390_TLS_LE32: | |
3cbc1e5e | 2873 | if (bfd_link_dll (info)) |
69fc87f1 MS |
2874 | { |
2875 | /* Linking a shared library with non-fpic code requires | |
2876 | a R_390_TLS_TPOFF relocation. */ | |
2877 | Elf_Internal_Rela outrel; | |
2878 | asection *sreloc; | |
2879 | bfd_byte *loc; | |
2880 | int indx; | |
2881 | ||
2882 | outrel.r_offset = rel->r_offset | |
2883 | + input_section->output_section->vma | |
2884 | + input_section->output_offset; | |
2885 | if (h != NULL && h->dynindx != -1) | |
2886 | indx = h->dynindx; | |
2887 | else | |
2888 | indx = 0; | |
2889 | outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF); | |
2890 | if (indx == 0) | |
2891 | outrel.r_addend = relocation - dtpoff_base (info); | |
2892 | else | |
2893 | outrel.r_addend = 0; | |
2894 | sreloc = elf_section_data (input_section)->sreloc; | |
2895 | if (sreloc == NULL) | |
2896 | abort (); | |
2897 | loc = sreloc->contents; | |
2898 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
2899 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
2900 | } | |
2901 | else | |
2902 | { | |
2903 | BFD_ASSERT (! unresolved_reloc); | |
2904 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
2905 | contents + rel->r_offset); | |
2906 | } | |
2907 | continue; | |
2908 | ||
2909 | case R_390_TLS_LDO32: | |
0e1862bb | 2910 | if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING)) |
69fc87f1 MS |
2911 | relocation -= dtpoff_base (info); |
2912 | else | |
2913 | /* When converting LDO to LE, we must negate. */ | |
2914 | relocation = -tpoff (info, relocation); | |
2915 | break; | |
2916 | ||
2917 | /* Relocations for tls instructions. */ | |
2918 | case R_390_TLS_LOAD: | |
2919 | case R_390_TLS_GDCALL: | |
2920 | case R_390_TLS_LDCALL: | |
2921 | tls_type = GOT_UNKNOWN; | |
2922 | if (h == NULL && local_got_offsets) | |
2923 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
2924 | else if (h != NULL) | |
2925 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
2926 | ||
2927 | if (tls_type == GOT_TLS_GD) | |
2928 | continue; | |
2929 | ||
2930 | if (r_type == R_390_TLS_LOAD) | |
2931 | { | |
0e1862bb | 2932 | if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) |
69fc87f1 MS |
2933 | { |
2934 | /* IE->LE transition. Four valid cases: | |
2935 | l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 | |
2936 | l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 | |
2937 | l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 | |
2938 | l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
2939 | unsigned int insn, ry; | |
2940 | ||
2941 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
69fc87f1 MS |
2942 | if ((insn & 0xff00f000) == 0x58000000) |
2943 | /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */ | |
2944 | ry = (insn & 0x000f0000); | |
2945 | else if ((insn & 0xff0f0000) == 0x58000000) | |
2946 | /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
2947 | ry = (insn & 0x0000f000) << 4; | |
2948 | else if ((insn & 0xff00f000) == 0x5800c000) | |
2949 | /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */ | |
2950 | ry = (insn & 0x000f0000); | |
2951 | else if ((insn & 0xff0f0000) == 0x580c0000) | |
2952 | /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
2953 | ry = (insn & 0x0000f000) << 4; | |
2954 | else | |
3704e358 AK |
2955 | { |
2956 | invalid_tls_insn (input_bfd, input_section, rel); | |
0a1b45a2 | 2957 | return false; |
3704e358 | 2958 | } |
69fc87f1 MS |
2959 | insn = 0x18000700 | (insn & 0x00f00000) | ry; |
2960 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
2961 | } | |
2962 | } | |
2963 | else if (r_type == R_390_TLS_GDCALL) | |
2964 | { | |
2965 | unsigned int insn; | |
2966 | ||
2967 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
77df2968 | 2968 | if ((insn & 0xff000fff) != 0x4d000000 && |
d0ddfe27 AK |
2969 | (insn & 0xffff0000) != 0xc0e50000 && |
2970 | (insn & 0xff000000) != 0x0d000000) | |
3704e358 AK |
2971 | { |
2972 | invalid_tls_insn (input_bfd, input_section, rel); | |
0a1b45a2 | 2973 | return false; |
3704e358 | 2974 | } |
0e1862bb | 2975 | if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) |
77df2968 | 2976 | { |
d0ddfe27 AK |
2977 | if ((insn & 0xff000000) == 0x0d000000) |
2978 | { | |
2979 | /* GD->LE transition. | |
2980 | basr rx, ry -> nopr r7 */ | |
2981 | insn = 0x07070000 | (insn & 0xffff); | |
2982 | } | |
2983 | else if ((insn & 0xff000000) == 0x4d000000) | |
77df2968 MS |
2984 | { |
2985 | /* GD->LE transition. | |
2986 | bas %r14,0(%rx,%r13) -> bc 0,0 */ | |
2987 | insn = 0x47000000; | |
2988 | } | |
2989 | else | |
2990 | { | |
2991 | /* GD->LE transition. | |
d0ddfe27 | 2992 | brasl %r14,_tls_get_offset@plt -> brcl 0,. */ |
77df2968 MS |
2993 | insn = 0xc0040000; |
2994 | bfd_put_16 (output_bfd, 0x0000, | |
2995 | contents + rel->r_offset + 4); | |
2996 | } | |
2997 | } | |
69fc87f1 | 2998 | else |
77df2968 | 2999 | { |
d0ddfe27 AK |
3000 | /* If basr is used in the pic case to invoke |
3001 | _tls_get_offset, something went wrong before. */ | |
3002 | if ((insn & 0xff000000) == 0x0d000000) | |
3704e358 AK |
3003 | { |
3004 | invalid_tls_insn (input_bfd, input_section, rel); | |
0a1b45a2 | 3005 | return false; |
3704e358 | 3006 | } |
d0ddfe27 | 3007 | |
77df2968 MS |
3008 | if ((insn & 0xff000000) == 0x4d000000) |
3009 | { | |
3010 | /* GD->IE transition. | |
3011 | bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */ | |
3012 | insn = 0x5822c000; | |
3013 | } | |
3014 | else | |
3015 | { | |
3016 | /* GD->IE transition. | |
3017 | brasl %r14,__tls_get_addr@plt -> | |
07d6d2b8 | 3018 | l %r2,0(%r2,%r12) ; bcr 0,0 */ |
77df2968 MS |
3019 | insn = 0x5822c000; |
3020 | bfd_put_16 (output_bfd, 0x0700, | |
3021 | contents + rel->r_offset + 4); | |
3022 | } | |
3023 | } | |
69fc87f1 MS |
3024 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
3025 | } | |
3026 | else if (r_type == R_390_TLS_LDCALL) | |
3027 | { | |
0e1862bb | 3028 | if (!bfd_link_pic (info)) |
69fc87f1 MS |
3029 | { |
3030 | unsigned int insn; | |
3031 | ||
3032 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
77df2968 | 3033 | if ((insn & 0xff000fff) != 0x4d000000 && |
d0ddfe27 AK |
3034 | (insn & 0xffff0000) != 0xc0e50000 && |
3035 | (insn & 0xff000000) != 0x0d000000) | |
3704e358 AK |
3036 | { |
3037 | invalid_tls_insn (input_bfd, input_section, rel); | |
0a1b45a2 | 3038 | return false; |
3704e358 | 3039 | } |
d0ddfe27 AK |
3040 | |
3041 | if ((insn & 0xff000000) == 0x0d000000) | |
3042 | { | |
3043 | /* LD->LE transition. | |
3044 | basr rx, ry -> nopr r7 */ | |
3045 | insn = 0x07070000 | (insn & 0xffff); | |
3046 | } | |
3047 | else if ((insn & 0xff000000) == 0x4d000000) | |
77df2968 MS |
3048 | { |
3049 | /* LD->LE transition. | |
3050 | bas %r14,0(%rx,%r13) -> bc 0,0 */ | |
3051 | insn = 0x47000000; | |
3052 | } | |
3053 | else | |
3054 | { | |
3055 | /* LD->LE transition. | |
d0ddfe27 | 3056 | brasl %r14,__tls_get_offset@plt -> brcl 0,. */ |
77df2968 MS |
3057 | insn = 0xc0040000; |
3058 | bfd_put_16 (output_bfd, 0x0000, | |
3059 | contents + rel->r_offset + 4); | |
3060 | } | |
69fc87f1 MS |
3061 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
3062 | } | |
3063 | } | |
3064 | continue; | |
3065 | ||
0451c93c MS |
3066 | default: |
3067 | break; | |
3068 | } | |
ec338859 | 3069 | |
239e1f3a AM |
3070 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3071 | because such sections are not SEC_ALLOC and thus ld.so will | |
3072 | not process them. */ | |
0451c93c | 3073 | if (unresolved_reloc |
239e1f3a | 3074 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
3075 | && h->def_dynamic) |
3076 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
3077 | rel->r_offset) != (bfd_vma) -1) | |
4eca0228 | 3078 | _bfd_error_handler |
695344c0 | 3079 | /* xgettext:c-format */ |
2dcf00ce AM |
3080 | (_("%pB(%pA+%#" PRIx64 "): " |
3081 | "unresolvable %s relocation against symbol `%s'"), | |
d003868e AM |
3082 | input_bfd, |
3083 | input_section, | |
2dcf00ce | 3084 | (uint64_t) rel->r_offset, |
843fe662 | 3085 | howto->name, |
0451c93c | 3086 | h->root.root.string); |
ec338859 | 3087 | |
470b557a AK |
3088 | do_relocation: |
3089 | ||
fb798c50 AK |
3090 | /* When applying a 24 bit reloc we need to start one byte |
3091 | earlier. Otherwise the 32 bit get/put bfd operations might | |
3092 | access a byte after the actual section. */ | |
3093 | if (r_type == R_390_PC24DBL | |
3094 | || r_type == R_390_PLT24DBL) | |
3095 | rel->r_offset--; | |
3096 | ||
bd1ea41b MS |
3097 | if (r_type == R_390_20 |
3098 | || r_type == R_390_GOT20 | |
3099 | || r_type == R_390_GOTPLT20 | |
3100 | || r_type == R_390_TLS_GOTIE20) | |
3101 | { | |
3102 | relocation += rel->r_addend; | |
3103 | relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12; | |
3104 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3105 | contents, rel->r_offset, | |
3106 | relocation, 0); | |
3107 | } | |
3108 | else | |
3109 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3110 | contents, rel->r_offset, | |
3111 | relocation, rel->r_addend); | |
ec338859 | 3112 | |
a85d7ed0 NC |
3113 | if (r != bfd_reloc_ok) |
3114 | { | |
0451c93c | 3115 | const char *name; |
ec338859 | 3116 | |
0451c93c MS |
3117 | if (h != NULL) |
3118 | name = h->root.root.string; | |
3119 | else | |
a85d7ed0 | 3120 | { |
0451c93c MS |
3121 | name = bfd_elf_string_from_elf_section (input_bfd, |
3122 | symtab_hdr->sh_link, | |
3123 | sym->st_name); | |
3124 | if (name == NULL) | |
0a1b45a2 | 3125 | return false; |
0451c93c | 3126 | if (*name == '\0') |
fd361982 | 3127 | name = bfd_section_name (sec); |
0451c93c | 3128 | } |
ec338859 | 3129 | |
0451c93c | 3130 | if (r == bfd_reloc_overflow) |
1a72702b AM |
3131 | (*info->callbacks->reloc_overflow) |
3132 | (info, (h ? &h->root : NULL), name, howto->name, | |
3133 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
0451c93c MS |
3134 | else |
3135 | { | |
4eca0228 | 3136 | _bfd_error_handler |
695344c0 | 3137 | /* xgettext:c-format */ |
2dcf00ce | 3138 | (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"), |
d003868e | 3139 | input_bfd, input_section, |
2dcf00ce | 3140 | (uint64_t) rel->r_offset, name, (int) r); |
0a1b45a2 | 3141 | return false; |
a85d7ed0 NC |
3142 | } |
3143 | } | |
3144 | } | |
ec338859 | 3145 | |
0a1b45a2 | 3146 | return true; |
a85d7ed0 NC |
3147 | } |
3148 | ||
470b557a AK |
3149 | /* Generate the PLT slots together with the dynamic relocations needed |
3150 | for IFUNC symbols. */ | |
3151 | ||
3152 | static void | |
3153 | elf_s390_finish_ifunc_symbol (bfd *output_bfd, | |
3154 | struct bfd_link_info *info, | |
3155 | struct elf_link_hash_entry *h, | |
3156 | struct elf_s390_link_hash_table *htab, | |
3157 | bfd_vma iplt_offset, | |
3158 | bfd_vma resolver_address) | |
3159 | { | |
3160 | bfd_vma iplt_index; | |
3161 | bfd_vma got_offset; | |
3162 | bfd_vma igotiplt_offset; | |
3163 | Elf_Internal_Rela rela; | |
3164 | bfd_byte *loc; | |
3165 | asection *plt, *gotplt, *relplt; | |
3166 | bfd_vma relative_offset; | |
3167 | ||
3168 | if (htab->elf.iplt == NULL | |
3169 | || htab->elf.igotplt == NULL | |
3170 | || htab->elf.irelplt == NULL) | |
3171 | abort (); | |
3172 | ||
3173 | gotplt = htab->elf.igotplt; | |
3174 | relplt = htab->elf.irelplt; | |
3175 | ||
3176 | /* Index of the PLT slot within iplt section. */ | |
3177 | iplt_index = iplt_offset / PLT_ENTRY_SIZE; | |
3178 | plt = htab->elf.iplt; | |
3179 | /* Offset into the igot.plt section. */ | |
3180 | igotiplt_offset = iplt_index * GOT_ENTRY_SIZE; | |
3181 | /* Offset into the got section. */ | |
3182 | got_offset = igotiplt_offset + gotplt->output_offset; | |
3183 | ||
3184 | /* S390 uses halfwords for relative branch calc! */ | |
3185 | relative_offset = - (plt->output_offset + | |
3186 | (PLT_ENTRY_SIZE * iplt_index) + 18) / 2; | |
ceada896 AA |
3187 | /* If offset is > 32768, branch to a previous branch |
3188 | 390 can only handle +-64 K jumps. */ | |
470b557a AK |
3189 | if ( -32768 > (int) relative_offset ) |
3190 | relative_offset | |
3191 | = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2); | |
3192 | ||
3193 | /* Fill in the entry in the procedure linkage table. */ | |
0e1862bb | 3194 | if (!bfd_link_pic (info)) |
470b557a AK |
3195 | { |
3196 | memcpy (plt->contents + iplt_offset, elf_s390_plt_entry, | |
3197 | PLT_ENTRY_SIZE); | |
3198 | ||
3199 | /* Adjust jump to the first plt entry. */ | |
3200 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3201 | plt->contents + iplt_offset + 20); | |
3202 | ||
3203 | /* Push the GOT offset field. */ | |
3204 | bfd_put_32 (output_bfd, | |
3205 | (gotplt->output_section->vma | |
3206 | + got_offset), | |
3207 | plt->contents + iplt_offset + 24); | |
3208 | } | |
3209 | else if (got_offset < 4096) | |
3210 | { | |
3211 | /* The GOT offset is small enough to be used directly as | |
3212 | displacement. */ | |
3213 | memcpy (plt->contents + iplt_offset, | |
3214 | elf_s390_plt_pic12_entry, | |
3215 | PLT_ENTRY_SIZE); | |
3216 | ||
3217 | /* Put in the GOT offset as displacement value. The 0xc000 | |
3218 | value comes from the first word of the plt entry. Look | |
3219 | at the elf_s390_plt_pic16_entry content. */ | |
3220 | bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset, | |
3221 | plt->contents + iplt_offset + 2); | |
3222 | ||
3223 | /* Adjust the jump to the first plt entry. */ | |
3224 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3225 | plt->contents + iplt_offset + 20); | |
3226 | } | |
3227 | else if (got_offset < 32768) | |
3228 | { | |
3229 | /* The GOT offset is too big for a displacement but small | |
3230 | enough to be a signed 16 bit immediate value as it can be | |
3231 | used in an lhi instruction. */ | |
3232 | memcpy (plt->contents + iplt_offset, | |
3233 | elf_s390_plt_pic16_entry, | |
3234 | PLT_ENTRY_SIZE); | |
3235 | ||
3236 | /* Put in the GOT offset for the lhi instruction. */ | |
3237 | bfd_put_16 (output_bfd, (bfd_vma)got_offset, | |
3238 | plt->contents + iplt_offset + 2); | |
3239 | ||
3240 | /* Adjust the jump to the first plt entry. */ | |
3241 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3242 | plt->contents + iplt_offset + 20); | |
3243 | } | |
3244 | else | |
3245 | { | |
3246 | memcpy (plt->contents + iplt_offset, | |
3247 | elf_s390_plt_pic_entry, | |
3248 | PLT_ENTRY_SIZE); | |
3249 | ||
3250 | /* Adjust the jump to the first plt entry. */ | |
3251 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3252 | plt->contents + iplt_offset + 20); | |
3253 | ||
3254 | /* Push the GOT offset field. */ | |
3255 | bfd_put_32 (output_bfd, got_offset, | |
3256 | plt->contents + iplt_offset + 24); | |
3257 | } | |
3258 | /* Insert offset into reloc. table here. */ | |
3259 | bfd_put_32 (output_bfd, relplt->output_offset + | |
3260 | iplt_index * RELA_ENTRY_SIZE, | |
3261 | plt->contents + iplt_offset + 28); | |
3262 | ||
3263 | /* Fill in the entry in the global offset table. | |
3264 | Points to instruction after GOT offset. */ | |
3265 | bfd_put_32 (output_bfd, | |
3266 | (plt->output_section->vma | |
3267 | + plt->output_offset | |
3268 | + iplt_offset | |
3269 | + 12), | |
3270 | gotplt->contents + igotiplt_offset); | |
3271 | ||
3272 | /* Fill in the entry in the .rela.plt section. */ | |
3273 | rela.r_offset = gotplt->output_section->vma + got_offset; | |
3274 | ||
3275 | if (!h | |
3276 | || h->dynindx == -1 | |
0e1862bb | 3277 | || ((bfd_link_executable (info) |
470b557a AK |
3278 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
3279 | && h->def_regular)) | |
3280 | { | |
3281 | /* The symbol can be locally resolved. */ | |
3282 | rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE); | |
3283 | rela.r_addend = resolver_address; | |
3284 | } | |
3285 | else | |
3286 | { | |
3287 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3288 | rela.r_addend = 0; | |
3289 | } | |
3290 | ||
3291 | loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE; | |
3292 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
3293 | } | |
3294 | ||
a85d7ed0 NC |
3295 | /* Finish up dynamic symbol handling. We set the contents of various |
3296 | dynamic sections here. */ | |
3297 | ||
0a1b45a2 | 3298 | static bool |
2c3fc389 NC |
3299 | elf_s390_finish_dynamic_symbol (bfd *output_bfd, |
3300 | struct bfd_link_info *info, | |
3301 | struct elf_link_hash_entry *h, | |
3302 | Elf_Internal_Sym *sym) | |
a85d7ed0 | 3303 | { |
0451c93c | 3304 | struct elf_s390_link_hash_table *htab; |
470b557a | 3305 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h; |
ec338859 | 3306 | |
0451c93c | 3307 | htab = elf_s390_hash_table (info); |
ec338859 | 3308 | |
a85d7ed0 NC |
3309 | if (h->plt.offset != (bfd_vma) -1) |
3310 | { | |
0451c93c MS |
3311 | bfd_vma plt_index; |
3312 | bfd_vma got_offset; | |
a85d7ed0 | 3313 | Elf_Internal_Rela rela; |
947216bf | 3314 | bfd_byte *loc; |
a85d7ed0 | 3315 | bfd_vma relative_offset; |
ec338859 | 3316 | |
a85d7ed0 | 3317 | /* This symbol has an entry in the procedure linkage table. Set |
26e41594 | 3318 | it up. */ |
0a511368 | 3319 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) |
0451c93c | 3320 | { |
0a511368 AK |
3321 | elf_s390_finish_ifunc_symbol (output_bfd, info, h, |
3322 | htab, h->plt.offset, | |
3323 | eh->ifunc_resolver_address + | |
3324 | eh->ifunc_resolver_section->output_offset + | |
3325 | eh->ifunc_resolver_section->output_section->vma); | |
3326 | /* Do not return yet. Handling of explicit GOT slots of | |
3327 | IFUNC symbols is below. */ | |
0451c93c | 3328 | } |
a85d7ed0 | 3329 | else |
0451c93c | 3330 | { |
470b557a AK |
3331 | if (h->dynindx == -1 |
3332 | || htab->elf.splt == NULL | |
3333 | || htab->elf.sgotplt == NULL | |
3334 | || htab->elf.srelplt == NULL) | |
3335 | abort (); | |
9aa17453 | 3336 | |
470b557a AK |
3337 | /* Calc. index no. |
3338 | Current offset - size first entry / entry size. */ | |
3339 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
9aa17453 | 3340 | |
470b557a AK |
3341 | /* Offset in GOT is PLT index plus GOT headers(3) times 4, |
3342 | addr & GOT addr. */ | |
3343 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
a85d7ed0 | 3344 | |
470b557a AK |
3345 | /* S390 uses halfwords for relative branch calc! */ |
3346 | relative_offset = - ((PLT_FIRST_ENTRY_SIZE + | |
3347 | (PLT_ENTRY_SIZE * plt_index) + 18) / 2); | |
3348 | /* If offset is > 32768, branch to a previous branch | |
3349 | 390 can only handle +-64 K jumps. */ | |
3350 | if ( -32768 > (int) relative_offset ) | |
3351 | relative_offset | |
3352 | = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2); | |
ec338859 | 3353 | |
470b557a | 3354 | /* Fill in the entry in the procedure linkage table. */ |
0e1862bb | 3355 | if (!bfd_link_pic (info)) |
470b557a AK |
3356 | { |
3357 | memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry, | |
3358 | PLT_ENTRY_SIZE); | |
3359 | ||
3360 | /* Adjust jump to the first plt entry. */ | |
3361 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3362 | htab->elf.splt->contents + h->plt.offset + 20); | |
3363 | ||
3364 | /* Push the GOT offset field. */ | |
3365 | bfd_put_32 (output_bfd, | |
3366 | (htab->elf.sgotplt->output_section->vma | |
3367 | + htab->elf.sgotplt->output_offset | |
3368 | + got_offset), | |
3369 | htab->elf.splt->contents + h->plt.offset + 24); | |
3370 | } | |
3371 | else if (got_offset < 4096) | |
3372 | { | |
3373 | /* The GOT offset is small enough to be used directly as | |
3374 | displacement. */ | |
3375 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3376 | elf_s390_plt_pic12_entry, | |
3377 | PLT_ENTRY_SIZE); | |
3378 | ||
3379 | /* Put in the GOT offset as displacement value. The 0xc000 | |
3380 | value comes from the first word of the plt entry. Look | |
3b67f094 | 3381 | at the elf_s390_plt_pic12_entry content. */ |
470b557a AK |
3382 | bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset, |
3383 | htab->elf.splt->contents + h->plt.offset + 2); | |
3384 | ||
3385 | /* Adjust the jump to the first plt entry. */ | |
3386 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3387 | htab->elf.splt->contents + h->plt.offset + 20); | |
3388 | } | |
3389 | else if (got_offset < 32768) | |
3390 | { | |
3391 | /* The GOT offset is too big for a displacement but small | |
3392 | enough to be a signed 16 bit immediate value as it can be | |
3393 | used in an lhi instruction. */ | |
3394 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3395 | elf_s390_plt_pic16_entry, | |
3396 | PLT_ENTRY_SIZE); | |
3397 | ||
3398 | /* Put in the GOT offset for the lhi instruction. */ | |
3399 | bfd_put_16 (output_bfd, (bfd_vma)got_offset, | |
3400 | htab->elf.splt->contents + h->plt.offset + 2); | |
3401 | ||
3402 | /* Adjust the jump to the first plt entry. */ | |
3403 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3404 | htab->elf.splt->contents + h->plt.offset + 20); | |
3405 | } | |
3406 | else | |
3407 | { | |
3408 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3409 | elf_s390_plt_pic_entry, | |
3410 | PLT_ENTRY_SIZE); | |
3411 | ||
3412 | /* Adjust the jump to the first plt entry. */ | |
3413 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3414 | htab->elf.splt->contents + h->plt.offset + 20); | |
3415 | ||
3416 | /* Push the GOT offset field. */ | |
3417 | bfd_put_32 (output_bfd, got_offset, | |
3418 | htab->elf.splt->contents + h->plt.offset + 24); | |
3419 | } | |
3420 | /* Insert offset into reloc. table here. */ | |
3421 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
3422 | htab->elf.splt->contents + h->plt.offset + 28); | |
3423 | ||
3424 | /* Fill in the entry in the global offset table. | |
3425 | Points to instruction after GOT offset. */ | |
3426 | bfd_put_32 (output_bfd, | |
3427 | (htab->elf.splt->output_section->vma | |
3428 | + htab->elf.splt->output_offset | |
3429 | + h->plt.offset | |
3430 | + 12), | |
3431 | htab->elf.sgotplt->contents + got_offset); | |
3432 | ||
3433 | /* Fill in the entry in the .rela.plt section. */ | |
3434 | rela.r_offset = (htab->elf.sgotplt->output_section->vma | |
3435 | + htab->elf.sgotplt->output_offset | |
3436 | + got_offset); | |
3437 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3438 | rela.r_addend = 0; | |
3439 | loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela); | |
3440 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
3441 | ||
3442 | if (!h->def_regular) | |
3443 | { | |
3444 | /* Mark the symbol as undefined, rather than as defined in | |
3445 | the .plt section. Leave the value alone. This is a clue | |
3446 | for the dynamic linker, to make function pointer | |
3447 | comparisons work between an application and shared | |
3448 | library. */ | |
3449 | sym->st_shndx = SHN_UNDEF; | |
3450 | } | |
a85d7ed0 NC |
3451 | } |
3452 | } | |
ec338859 | 3453 | |
69fc87f1 MS |
3454 | if (h->got.offset != (bfd_vma) -1 |
3455 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD | |
3456 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE | |
3457 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT) | |
a85d7ed0 | 3458 | { |
a85d7ed0 | 3459 | Elf_Internal_Rela rela; |
947216bf | 3460 | bfd_byte *loc; |
a85d7ed0 NC |
3461 | |
3462 | /* This symbol has an entry in the global offset table. Set it | |
26e41594 | 3463 | up. */ |
a85d7ed0 | 3464 | |
f41345a7 | 3465 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
0451c93c | 3466 | abort (); |
a85d7ed0 | 3467 | |
f41345a7 AK |
3468 | rela.r_offset = (htab->elf.sgot->output_section->vma |
3469 | + htab->elf.sgot->output_offset | |
dc810e39 | 3470 | + (h->got.offset &~ (bfd_vma) 1)); |
a85d7ed0 NC |
3471 | |
3472 | /* If this is a static link, or it is a -Bsymbolic link and the | |
3473 | symbol is defined locally or was forced to be local because | |
3474 | of a version file, we just want to emit a RELATIVE reloc. | |
3475 | The entry in the global offset table will already have been | |
3476 | initialized in the relocate_section function. */ | |
470b557a AK |
3477 | if (h->def_regular && s390_is_ifunc_symbol_p (h)) |
3478 | { | |
0e1862bb | 3479 | if (bfd_link_pic (info)) |
470b557a AK |
3480 | { |
3481 | /* An explicit GOT slot usage needs GLOB_DAT. If the | |
3482 | symbol references local the implicit got.iplt slot | |
3483 | will be used and the IRELATIVE reloc has been created | |
3484 | above. */ | |
3485 | goto do_glob_dat; | |
3486 | } | |
3487 | else | |
3488 | { | |
3489 | /* For non-shared objects explicit GOT slots must be | |
3490 | filled with the PLT slot address for pointer | |
3491 | equality reasons. */ | |
3492 | bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma | |
3493 | + htab->elf.iplt->output_offset | |
3494 | + h->plt.offset), | |
3495 | htab->elf.sgot->contents + h->got.offset); | |
0a1b45a2 | 3496 | return true; |
470b557a AK |
3497 | } |
3498 | } | |
0e1862bb | 3499 | else if (bfd_link_pic (info) |
ceada896 | 3500 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
0451c93c | 3501 | { |
470b557a AK |
3502 | /* If this is a static link, or it is a -Bsymbolic link and |
3503 | the symbol is defined locally or was forced to be local | |
3504 | because of a version file, we just want to emit a | |
3505 | RELATIVE reloc. The entry in the global offset table | |
3506 | will already have been initialized in the | |
3507 | relocate_section function. */ | |
8170f769 | 3508 | if (!(h->def_regular || ELF_COMMON_DEF_P (h))) |
0a1b45a2 | 3509 | return false; |
0451c93c MS |
3510 | BFD_ASSERT((h->got.offset & 1) != 0); |
3511 | rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
3512 | rela.r_addend = (h->root.u.def.value | |
26e41594 AM |
3513 | + h->root.u.def.section->output_section->vma |
3514 | + h->root.u.def.section->output_offset); | |
3515 | } | |
a85d7ed0 NC |
3516 | else |
3517 | { | |
3518 | BFD_ASSERT((h->got.offset & 1) == 0); | |
470b557a | 3519 | do_glob_dat: |
f41345a7 | 3520 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset); |
a85d7ed0 | 3521 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT); |
26e41594 AM |
3522 | rela.r_addend = 0; |
3523 | } | |
a85d7ed0 | 3524 | |
f41345a7 AK |
3525 | loc = htab->elf.srelgot->contents; |
3526 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 3527 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3528 | } |
3529 | ||
f5385ebf | 3530 | if (h->needs_copy) |
a85d7ed0 | 3531 | { |
a85d7ed0 | 3532 | Elf_Internal_Rela rela; |
5474d94f | 3533 | asection *s; |
947216bf | 3534 | bfd_byte *loc; |
a85d7ed0 NC |
3535 | |
3536 | /* This symbols needs a copy reloc. Set it up. */ | |
3537 | ||
0451c93c MS |
3538 | if (h->dynindx == -1 |
3539 | || (h->root.type != bfd_link_hash_defined | |
3540 | && h->root.type != bfd_link_hash_defweak) | |
5474d94f AM |
3541 | || htab->elf.srelbss == NULL |
3542 | || htab->elf.sreldynrelro == NULL) | |
0451c93c | 3543 | abort (); |
a85d7ed0 NC |
3544 | |
3545 | rela.r_offset = (h->root.u.def.value | |
3546 | + h->root.u.def.section->output_section->vma | |
3547 | + h->root.u.def.section->output_offset); | |
3548 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY); | |
3549 | rela.r_addend = 0; | |
afbf7e8e | 3550 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
3551 | s = htab->elf.sreldynrelro; |
3552 | else | |
3553 | s = htab->elf.srelbss; | |
3554 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 3555 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3556 | } |
3557 | ||
3558 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 3559 | if (h == htab->elf.hdynamic |
22edb2f1 RS |
3560 | || h == htab->elf.hgot |
3561 | || h == htab->elf.hplt) | |
a85d7ed0 NC |
3562 | sym->st_shndx = SHN_ABS; |
3563 | ||
0a1b45a2 | 3564 | return true; |
a85d7ed0 NC |
3565 | } |
3566 | ||
0451c93c MS |
3567 | /* Used to decide how to sort relocs in an optimal manner for the |
3568 | dynamic linker, before writing them out. */ | |
3569 | ||
3570 | static enum elf_reloc_type_class | |
7e612e98 AM |
3571 | elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
3572 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
3573 | const Elf_Internal_Rela *rela) | |
0451c93c | 3574 | { |
0f042c67 AK |
3575 | bfd *abfd = info->output_bfd; |
3576 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3577 | struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info); | |
3578 | unsigned long r_symndx = ELF32_R_SYM (rela->r_info); | |
3579 | Elf_Internal_Sym sym; | |
3580 | ||
3581 | if (htab->elf.dynsym == NULL | |
3582 | || !bed->s->swap_symbol_in (abfd, | |
3583 | (htab->elf.dynsym->contents | |
3584 | + r_symndx * bed->s->sizeof_sym), | |
3585 | 0, &sym)) | |
3586 | abort (); | |
3587 | ||
3588 | /* Check relocation against STT_GNU_IFUNC symbol. */ | |
3589 | if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
3590 | return reloc_class_ifunc; | |
3591 | ||
0451c93c MS |
3592 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
3593 | { | |
3594 | case R_390_RELATIVE: | |
3595 | return reloc_class_relative; | |
3596 | case R_390_JMP_SLOT: | |
3597 | return reloc_class_plt; | |
3598 | case R_390_COPY: | |
3599 | return reloc_class_copy; | |
3600 | default: | |
3601 | return reloc_class_normal; | |
3602 | } | |
3603 | } | |
3604 | ||
a85d7ed0 NC |
3605 | /* Finish up the dynamic sections. */ |
3606 | ||
0a1b45a2 | 3607 | static bool |
2c3fc389 NC |
3608 | elf_s390_finish_dynamic_sections (bfd *output_bfd, |
3609 | struct bfd_link_info *info) | |
a85d7ed0 | 3610 | { |
0451c93c | 3611 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
3612 | bfd *dynobj; |
3613 | asection *sdyn; | |
470b557a AK |
3614 | bfd *ibfd; |
3615 | unsigned int i; | |
a85d7ed0 | 3616 | |
0451c93c MS |
3617 | htab = elf_s390_hash_table (info); |
3618 | dynobj = htab->elf.dynobj; | |
3d4d4302 | 3619 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
a85d7ed0 | 3620 | |
0451c93c | 3621 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 | 3622 | { |
a85d7ed0 NC |
3623 | Elf32_External_Dyn *dyncon, *dynconend; |
3624 | ||
f41345a7 | 3625 | if (sdyn == NULL || htab->elf.sgot == NULL) |
0451c93c | 3626 | abort (); |
a85d7ed0 NC |
3627 | |
3628 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 3629 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
a85d7ed0 NC |
3630 | for (; dyncon < dynconend; dyncon++) |
3631 | { | |
3632 | Elf_Internal_Dyn dyn; | |
a85d7ed0 | 3633 | asection *s; |
ec338859 | 3634 | |
a85d7ed0 | 3635 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
ec338859 | 3636 | |
a85d7ed0 NC |
3637 | switch (dyn.d_tag) |
3638 | { | |
3639 | default: | |
0451c93c | 3640 | continue; |
ec338859 | 3641 | |
a85d7ed0 | 3642 | case DT_PLTGOT: |
4ade44b7 AM |
3643 | s = htab->elf.sgotplt; |
3644 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
0451c93c | 3645 | break; |
ec338859 | 3646 | |
a85d7ed0 | 3647 | case DT_JMPREL: |
4ade44b7 AM |
3648 | s = htab->elf.srelplt; |
3649 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
a85d7ed0 NC |
3650 | break; |
3651 | ||
3652 | case DT_PLTRELSZ: | |
79c12fae AK |
3653 | dyn.d_un.d_val = htab->elf.srelplt->size; |
3654 | if (htab->elf.irelplt) | |
3655 | dyn.d_un.d_val += htab->elf.irelplt->size; | |
a85d7ed0 NC |
3656 | break; |
3657 | } | |
0451c93c MS |
3658 | |
3659 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
a85d7ed0 NC |
3660 | } |
3661 | ||
3662 | /* Fill in the special first entry in the procedure linkage table. */ | |
f41345a7 | 3663 | if (htab->elf.splt && htab->elf.splt->size > 0) |
a85d7ed0 | 3664 | { |
f41345a7 | 3665 | memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE); |
0e1862bb | 3666 | if (bfd_link_pic (info)) |
0451c93c | 3667 | { |
f41345a7 | 3668 | memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry, |
9aa17453 AK |
3669 | PLT_FIRST_ENTRY_SIZE); |
3670 | } | |
26e41594 | 3671 | else |
9aa17453 | 3672 | { |
f41345a7 | 3673 | memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry, |
9aa17453 | 3674 | PLT_FIRST_ENTRY_SIZE); |
26e41594 | 3675 | bfd_put_32 (output_bfd, |
f41345a7 AK |
3676 | htab->elf.sgotplt->output_section->vma |
3677 | + htab->elf.sgotplt->output_offset, | |
3678 | htab->elf.splt->contents + 24); | |
ceada896 | 3679 | } |
f41345a7 | 3680 | elf_section_data (htab->elf.splt->output_section) |
0451c93c | 3681 | ->this_hdr.sh_entsize = 4; |
a85d7ed0 NC |
3682 | } |
3683 | ||
3684 | } | |
3685 | ||
f41345a7 | 3686 | if (htab->elf.sgotplt) |
a85d7ed0 | 3687 | { |
0451c93c | 3688 | /* Fill in the first three entries in the global offset table. */ |
f41345a7 | 3689 | if (htab->elf.sgotplt->size > 0) |
0451c93c MS |
3690 | { |
3691 | bfd_put_32 (output_bfd, | |
3692 | (sdyn == NULL ? (bfd_vma) 0 | |
3693 | : sdyn->output_section->vma + sdyn->output_offset), | |
f41345a7 | 3694 | htab->elf.sgotplt->contents); |
0451c93c | 3695 | /* One entry for shared object struct ptr. */ |
f41345a7 | 3696 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4); |
0451c93c | 3697 | /* One entry for _dl_runtime_resolve. */ |
f41345a7 | 3698 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8); |
0451c93c | 3699 | } |
a85d7ed0 | 3700 | |
f41345a7 | 3701 | elf_section_data (htab->elf.sgotplt->output_section) |
0451c93c MS |
3702 | ->this_hdr.sh_entsize = 4; |
3703 | } | |
470b557a | 3704 | /* Finish dynamic symbol for local IFUNC symbols. */ |
c72f2fb2 | 3705 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
470b557a AK |
3706 | { |
3707 | struct plt_entry *local_plt; | |
3708 | Elf_Internal_Sym *isym; | |
3709 | Elf_Internal_Shdr *symtab_hdr; | |
3710 | ||
3711 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
3712 | ||
1ef692ea AK |
3713 | if (!is_s390_elf (ibfd)) |
3714 | continue; | |
3715 | ||
470b557a AK |
3716 | local_plt = elf_s390_local_plt (ibfd); |
3717 | if (local_plt != NULL) | |
3718 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
3719 | { | |
3720 | if (local_plt[i].plt.offset != (bfd_vma) -1) | |
3721 | { | |
3722 | asection *sec = local_plt[i].sec; | |
f1dfbfdb | 3723 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, ibfd, i); |
470b557a | 3724 | if (isym == NULL) |
0a1b45a2 | 3725 | return false; |
470b557a AK |
3726 | |
3727 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
3728 | elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab, | |
3729 | local_plt[i].plt.offset, | |
3730 | isym->st_value | |
3731 | + sec->output_section->vma | |
3732 | + sec->output_offset); | |
3733 | ||
3734 | } | |
3735 | } | |
3736 | } | |
0a1b45a2 | 3737 | return true; |
a85d7ed0 | 3738 | } |
e3e9290d AA |
3739 | \f |
3740 | /* Support for core dump NOTE sections. */ | |
a85d7ed0 | 3741 | |
0a1b45a2 | 3742 | static bool |
2c3fc389 | 3743 | elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note) |
979f4a38 NC |
3744 | { |
3745 | int offset; | |
eea6121a | 3746 | unsigned int size; |
979f4a38 NC |
3747 | |
3748 | switch (note->descsz) | |
3749 | { | |
ceada896 | 3750 | default: |
0a1b45a2 | 3751 | return false; |
979f4a38 | 3752 | |
ceada896 AA |
3753 | case 224: /* S/390 Linux. */ |
3754 | /* pr_cursig */ | |
3755 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
979f4a38 | 3756 | |
ceada896 AA |
3757 | /* pr_pid */ |
3758 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); | |
979f4a38 | 3759 | |
ceada896 AA |
3760 | /* pr_reg */ |
3761 | offset = 72; | |
3762 | size = 144; | |
3763 | break; | |
979f4a38 NC |
3764 | } |
3765 | ||
3766 | /* Make a ".reg/999" section. */ | |
3767 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 3768 | size, note->descpos + offset); |
979f4a38 NC |
3769 | } |
3770 | ||
0a1b45a2 | 3771 | static bool |
e3e9290d AA |
3772 | elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
3773 | { | |
3774 | switch (note->descsz) | |
3775 | { | |
3776 | default: | |
0a1b45a2 | 3777 | return false; |
e3e9290d AA |
3778 | |
3779 | case 124: /* sizeof(struct elf_prpsinfo) on s390 */ | |
3780 | elf_tdata (abfd)->core->pid | |
3781 | = bfd_get_32 (abfd, note->descdata + 12); | |
3782 | elf_tdata (abfd)->core->program | |
3783 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
3784 | elf_tdata (abfd)->core->command | |
3785 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
3786 | break; | |
3787 | } | |
3788 | ||
3789 | /* Note that for some reason, a spurious space is tacked | |
3790 | onto the end of the args in some (at least one anyway) | |
3791 | implementations, so strip it off if it exists. */ | |
3792 | ||
3793 | { | |
3794 | char *command = elf_tdata (abfd)->core->command; | |
3795 | int n = strlen (command); | |
3796 | ||
3797 | if (0 < n && command[n - 1] == ' ') | |
3798 | command[n - 1] = '\0'; | |
3799 | } | |
3800 | ||
0a1b45a2 | 3801 | return true; |
e3e9290d AA |
3802 | } |
3803 | ||
3804 | static char * | |
3805 | elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz, | |
3806 | int note_type, ...) | |
3807 | { | |
3808 | va_list ap; | |
3809 | ||
3810 | switch (note_type) | |
3811 | { | |
3812 | default: | |
3813 | return NULL; | |
3814 | ||
3815 | case NT_PRPSINFO: | |
3816 | { | |
602f1657 | 3817 | char data[124] ATTRIBUTE_NONSTRING = { 0 }; |
e3e9290d AA |
3818 | const char *fname, *psargs; |
3819 | ||
3820 | va_start (ap, note_type); | |
3821 | fname = va_arg (ap, const char *); | |
3822 | psargs = va_arg (ap, const char *); | |
3823 | va_end (ap); | |
3824 | ||
3825 | strncpy (data + 28, fname, 16); | |
898ade12 | 3826 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 3827 | DIAGNOSTIC_PUSH; |
be3e27bb | 3828 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
3829 | -Wstringop-truncation: |
3830 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
3831 | */ | |
95da9854 L |
3832 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
3833 | #endif | |
e3e9290d | 3834 | strncpy (data + 44, psargs, 80); |
898ade12 | 3835 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 3836 | DIAGNOSTIC_POP; |
fe75810f | 3837 | #endif |
e3e9290d AA |
3838 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
3839 | &data, sizeof (data)); | |
3840 | } | |
3841 | ||
3842 | case NT_PRSTATUS: | |
3843 | { | |
3844 | char data[224] = { 0 }; | |
3845 | long pid; | |
3846 | int cursig; | |
3847 | const void *gregs; | |
3848 | ||
3849 | va_start (ap, note_type); | |
3850 | pid = va_arg (ap, long); | |
3851 | cursig = va_arg (ap, int); | |
3852 | gregs = va_arg (ap, const void *); | |
3853 | va_end (ap); | |
3854 | ||
3855 | bfd_put_16 (abfd, cursig, data + 12); | |
3856 | bfd_put_32 (abfd, pid, data + 24); | |
3857 | memcpy (data + 72, gregs, 144); | |
3858 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, | |
3859 | &data, sizeof (data)); | |
3860 | } | |
3861 | } | |
3862 | /* NOTREACHED */ | |
3863 | } | |
3864 | \f | |
4c45e5c9 JJ |
3865 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
3866 | or (bfd_vma) -1 if it should not be included. */ | |
3867 | ||
3868 | static bfd_vma | |
3869 | elf_s390_plt_sym_val (bfd_vma i, const asection *plt, | |
3870 | const arelent *rel ATTRIBUTE_UNUSED) | |
3871 | { | |
3872 | return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE; | |
3873 | } | |
3874 | ||
643f7afb AK |
3875 | /* Merge backend specific data from an object file to the output |
3876 | object file when linking. */ | |
3877 | ||
0a1b45a2 | 3878 | static bool |
50e03d47 | 3879 | elf32_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
55786da2 | 3880 | { |
50e03d47 AM |
3881 | bfd *obfd = info->output_bfd; |
3882 | ||
643f7afb | 3883 | if (!is_s390_elf (ibfd) || !is_s390_elf (obfd)) |
0a1b45a2 | 3884 | return true; |
643f7afb | 3885 | |
50e03d47 | 3886 | if (!elf_s390_merge_obj_attributes (ibfd, info)) |
0a1b45a2 | 3887 | return false; |
643f7afb | 3888 | |
55786da2 | 3889 | elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags; |
0a1b45a2 | 3890 | return true; |
55786da2 AK |
3891 | } |
3892 | ||
4c45e5c9 | 3893 | |
6d00b590 | 3894 | #define TARGET_BIG_SYM s390_elf32_vec |
a85d7ed0 NC |
3895 | #define TARGET_BIG_NAME "elf32-s390" |
3896 | #define ELF_ARCH bfd_arch_s390 | |
ae95ffa6 | 3897 | #define ELF_TARGET_ID S390_ELF_DATA |
a85d7ed0 NC |
3898 | #define ELF_MACHINE_CODE EM_S390 |
3899 | #define ELF_MACHINE_ALT1 EM_S390_OLD | |
3900 | #define ELF_MAXPAGESIZE 0x1000 | |
3901 | ||
3902 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 3903 | #define elf_backend_can_refcount 1 |
a85d7ed0 NC |
3904 | #define elf_backend_want_got_plt 1 |
3905 | #define elf_backend_plt_readonly 1 | |
3906 | #define elf_backend_want_plt_sym 0 | |
3907 | #define elf_backend_got_header_size 12 | |
5474d94f | 3908 | #define elf_backend_want_dynrelro 1 |
b491616a | 3909 | #define elf_backend_rela_normal 1 |
a85d7ed0 | 3910 | |
26e41594 | 3911 | #define elf_info_to_howto elf_s390_info_to_howto |
a85d7ed0 | 3912 | |
a85d7ed0 NC |
3913 | #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name |
3914 | #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create | |
3915 | #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup | |
157090f7 | 3916 | #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup |
a85d7ed0 | 3917 | |
55786da2 AK |
3918 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data |
3919 | ||
a85d7ed0 | 3920 | #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol |
26e41594 | 3921 | #define elf_backend_check_relocs elf_s390_check_relocs |
0451c93c | 3922 | #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol |
9d19e4fd | 3923 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
a85d7ed0 NC |
3924 | #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections |
3925 | #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol | |
26e41594 | 3926 | #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook |
0451c93c | 3927 | #define elf_backend_reloc_type_class elf_s390_reloc_type_class |
26e41594 | 3928 | #define elf_backend_relocate_section elf_s390_relocate_section |
a85d7ed0 | 3929 | #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections |
74541ad4 | 3930 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
979f4a38 | 3931 | #define elf_backend_grok_prstatus elf_s390_grok_prstatus |
e3e9290d AA |
3932 | #define elf_backend_grok_psinfo elf_s390_grok_psinfo |
3933 | #define elf_backend_write_core_note elf_s390_write_core_note | |
4c45e5c9 | 3934 | #define elf_backend_plt_sym_val elf_s390_plt_sym_val |
07d6d2b8 | 3935 | #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p |
a85d7ed0 | 3936 | |
69fc87f1 | 3937 | #define bfd_elf32_mkobject elf_s390_mkobject |
26e41594 | 3938 | #define elf_backend_object_p elf_s390_object_p |
a85d7ed0 | 3939 | |
0a1b45a2 | 3940 | #define elf_backend_linux_prpsinfo32_ugid16 true |
a2f63b2e | 3941 | |
a85d7ed0 | 3942 | #include "elf32-target.h" |