Commit | Line | Data |
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a85d7ed0 | 1 | /* IBM S/390-specific support for 64-bit ELF |
b3adc24a | 2 | Copyright (C) 2000-2020 Free Software Foundation, Inc. |
a85d7ed0 NC |
3 | Contributed Martin Schwidefsky (schwidefsky@de.ibm.com). |
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" |
b4cbbe8f | 28 | #include "elf-s390.h" |
e3e9290d | 29 | #include <stdarg.h> |
a85d7ed0 NC |
30 | |
31 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value | |
32 | from smaller values. Start with zero, widen, *then* decrement. */ | |
33 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
34 | ||
2c3fc389 NC |
35 | static bfd_reloc_status_type |
36 | s390_tls_reloc (bfd *, arelent *, asymbol *, void *, | |
37 | asection *, bfd *, char **); | |
38 | static bfd_reloc_status_type | |
39 | s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *, | |
40 | asection *, bfd *, char **); | |
41 | ||
a85d7ed0 NC |
42 | /* The relocation "howto" table. */ |
43 | static reloc_howto_type elf_howto_table[] = | |
44 | { | |
45 | HOWTO (R_390_NONE, /* type */ | |
46 | 0, /* rightshift */ | |
6346d5ca | 47 | 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */ |
a85d7ed0 | 48 | 0, /* bitsize */ |
b34976b6 | 49 | FALSE, /* pc_relative */ |
a85d7ed0 NC |
50 | 0, /* bitpos */ |
51 | complain_overflow_dont, /* complain_on_overflow */ | |
52 | bfd_elf_generic_reloc, /* special_function */ | |
53 | "R_390_NONE", /* name */ | |
b34976b6 | 54 | FALSE, /* partial_inplace */ |
a85d7ed0 NC |
55 | 0, /* src_mask */ |
56 | 0, /* dst_mask */ | |
b34976b6 AM |
57 | FALSE), /* pcrel_offset */ |
58 | ||
07d6d2b8 AM |
59 | HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, |
60 | bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE), | |
61 | HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
62 | bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE), | |
63 | HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
64 | bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE), | |
65 | HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
66 | bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE), | |
5236c819 | 67 | HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, |
07d6d2b8 | 68 | bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE), |
15f8604d | 69 | HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield, |
07d6d2b8 | 70 | bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE), |
5236c819 | 71 | HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
07d6d2b8 | 72 | bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE), |
5236c819 | 73 | HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, |
07d6d2b8 AM |
74 | bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE), |
75 | HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
76 | bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE), | |
77 | HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
5236c819 | 78 | bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE), |
07d6d2b8 | 79 | HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
5236c819 | 80 | bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE), |
07d6d2b8 | 81 | HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, |
5236c819 | 82 | bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE), |
07d6d2b8 | 83 | HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
5236c819 | 84 | bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE), |
07d6d2b8 AM |
85 | HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, |
86 | bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE), | |
87 | HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
88 | bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE), | |
89 | HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
90 | bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE), | |
91 | HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
92 | bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE), | |
93 | HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
5236c819 MS |
94 | bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE), |
95 | HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
07d6d2b8 | 96 | bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE), |
5236c819 MS |
97 | HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, |
98 | bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE), | |
07d6d2b8 | 99 | HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, |
5236c819 | 100 | bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE), |
07d6d2b8 AM |
101 | HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
102 | bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE), | |
5236c819 | 103 | HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, |
07d6d2b8 | 104 | bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE), |
5236c819 | 105 | HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
07d6d2b8 | 106 | bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE), |
5236c819 | 107 | HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, |
07d6d2b8 | 108 | bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE), |
5236c819 | 109 | HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, |
07d6d2b8 AM |
110 | bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE), |
111 | HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
5236c819 | 112 | bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE), |
07d6d2b8 | 113 | HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
5236c819 MS |
114 | bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE), |
115 | HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
116 | bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE), | |
07d6d2b8 | 117 | HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, |
5236c819 MS |
118 | bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE), |
119 | HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
120 | bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE), | |
121 | HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
122 | bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE), | |
123 | HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
124 | bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE), | |
07d6d2b8 | 125 | HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, |
5236c819 | 126 | bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE), |
07d6d2b8 | 127 | HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
5236c819 | 128 | bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE), |
07d6d2b8 | 129 | HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
5236c819 | 130 | bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE), |
69fc87f1 MS |
131 | HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont, |
132 | s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE), | |
133 | HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
134 | s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE), | |
135 | HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
136 | s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE), | |
137 | EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */ | |
07d6d2b8 | 138 | HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
69fc87f1 MS |
139 | bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE), |
140 | HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
141 | bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE), | |
142 | EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */ | |
143 | HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
144 | bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE), | |
145 | EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */ | |
146 | HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
147 | bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE), | |
148 | EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */ | |
07d6d2b8 | 149 | HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
69fc87f1 MS |
150 | bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE), |
151 | HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
152 | bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE), | |
153 | EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */ | |
07d6d2b8 | 154 | HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
69fc87f1 MS |
155 | bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE), |
156 | EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */ | |
157 | HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
158 | bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE), | |
159 | HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
160 | bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE), | |
161 | HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
162 | bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE), | |
163 | HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
164 | bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE), | |
07d6d2b8 | 165 | HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont, |
bd1ea41b MS |
166 | s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE), |
167 | HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont, | |
168 | s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE), | |
07d6d2b8 | 169 | HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont, |
bd1ea41b MS |
170 | s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE), |
171 | HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont, | |
172 | s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE), | |
470b557a AK |
173 | HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
174 | bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE), | |
07d6d2b8 AM |
175 | HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield, |
176 | bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE), | |
177 | HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield, | |
fb798c50 | 178 | bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE), |
07d6d2b8 AM |
179 | HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield, |
180 | bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE), | |
181 | HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield, | |
fb798c50 | 182 | bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE), |
a85d7ed0 NC |
183 | }; |
184 | ||
185 | /* GNU extension to record C++ vtable hierarchy. */ | |
186 | static reloc_howto_type elf64_s390_vtinherit_howto = | |
b34976b6 | 187 | HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE); |
a85d7ed0 | 188 | static reloc_howto_type elf64_s390_vtentry_howto = |
b34976b6 | 189 | HOWTO (R_390_GNU_VTENTRY, 0,4,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE); |
a85d7ed0 NC |
190 | |
191 | static reloc_howto_type * | |
f3185997 | 192 | elf_s390_reloc_type_lookup (bfd *abfd, |
2c3fc389 | 193 | bfd_reloc_code_real_type code) |
a85d7ed0 | 194 | { |
0451c93c MS |
195 | switch (code) |
196 | { | |
197 | case BFD_RELOC_NONE: | |
198 | return &elf_howto_table[(int) R_390_NONE]; | |
199 | case BFD_RELOC_8: | |
200 | return &elf_howto_table[(int) R_390_8]; | |
201 | case BFD_RELOC_390_12: | |
202 | return &elf_howto_table[(int) R_390_12]; | |
203 | case BFD_RELOC_16: | |
204 | return &elf_howto_table[(int) R_390_16]; | |
205 | case BFD_RELOC_32: | |
206 | return &elf_howto_table[(int) R_390_32]; | |
207 | case BFD_RELOC_CTOR: | |
208 | return &elf_howto_table[(int) R_390_32]; | |
209 | case BFD_RELOC_32_PCREL: | |
210 | return &elf_howto_table[(int) R_390_PC32]; | |
211 | case BFD_RELOC_390_GOT12: | |
212 | return &elf_howto_table[(int) R_390_GOT12]; | |
213 | case BFD_RELOC_32_GOT_PCREL: | |
214 | return &elf_howto_table[(int) R_390_GOT32]; | |
215 | case BFD_RELOC_390_PLT32: | |
216 | return &elf_howto_table[(int) R_390_PLT32]; | |
217 | case BFD_RELOC_390_COPY: | |
218 | return &elf_howto_table[(int) R_390_COPY]; | |
219 | case BFD_RELOC_390_GLOB_DAT: | |
220 | return &elf_howto_table[(int) R_390_GLOB_DAT]; | |
221 | case BFD_RELOC_390_JMP_SLOT: | |
222 | return &elf_howto_table[(int) R_390_JMP_SLOT]; | |
223 | case BFD_RELOC_390_RELATIVE: | |
224 | return &elf_howto_table[(int) R_390_RELATIVE]; | |
225 | case BFD_RELOC_32_GOTOFF: | |
5236c819 | 226 | return &elf_howto_table[(int) R_390_GOTOFF32]; |
0451c93c MS |
227 | case BFD_RELOC_390_GOTPC: |
228 | return &elf_howto_table[(int) R_390_GOTPC]; | |
229 | case BFD_RELOC_390_GOT16: | |
230 | return &elf_howto_table[(int) R_390_GOT16]; | |
231 | case BFD_RELOC_16_PCREL: | |
232 | return &elf_howto_table[(int) R_390_PC16]; | |
fb798c50 AK |
233 | case BFD_RELOC_390_PC12DBL: |
234 | return &elf_howto_table[(int) R_390_PC12DBL]; | |
235 | case BFD_RELOC_390_PLT12DBL: | |
236 | return &elf_howto_table[(int) R_390_PLT12DBL]; | |
0451c93c MS |
237 | case BFD_RELOC_390_PC16DBL: |
238 | return &elf_howto_table[(int) R_390_PC16DBL]; | |
239 | case BFD_RELOC_390_PLT16DBL: | |
240 | return &elf_howto_table[(int) R_390_PLT16DBL]; | |
fb798c50 AK |
241 | case BFD_RELOC_390_PC24DBL: |
242 | return &elf_howto_table[(int) R_390_PC24DBL]; | |
243 | case BFD_RELOC_390_PLT24DBL: | |
244 | return &elf_howto_table[(int) R_390_PLT24DBL]; | |
0451c93c MS |
245 | case BFD_RELOC_390_PC32DBL: |
246 | return &elf_howto_table[(int) R_390_PC32DBL]; | |
247 | case BFD_RELOC_390_PLT32DBL: | |
248 | return &elf_howto_table[(int) R_390_PLT32DBL]; | |
249 | case BFD_RELOC_390_GOTPCDBL: | |
250 | return &elf_howto_table[(int) R_390_GOTPCDBL]; | |
251 | case BFD_RELOC_64: | |
252 | return &elf_howto_table[(int) R_390_64]; | |
253 | case BFD_RELOC_64_PCREL: | |
254 | return &elf_howto_table[(int) R_390_PC64]; | |
255 | case BFD_RELOC_390_GOT64: | |
256 | return &elf_howto_table[(int) R_390_GOT64]; | |
257 | case BFD_RELOC_390_PLT64: | |
258 | return &elf_howto_table[(int) R_390_PLT64]; | |
259 | case BFD_RELOC_390_GOTENT: | |
260 | return &elf_howto_table[(int) R_390_GOTENT]; | |
5236c819 MS |
261 | case BFD_RELOC_16_GOTOFF: |
262 | return &elf_howto_table[(int) R_390_GOTOFF16]; | |
263 | case BFD_RELOC_390_GOTOFF64: | |
264 | return &elf_howto_table[(int) R_390_GOTOFF64]; | |
265 | case BFD_RELOC_390_GOTPLT12: | |
266 | return &elf_howto_table[(int) R_390_GOTPLT12]; | |
267 | case BFD_RELOC_390_GOTPLT16: | |
268 | return &elf_howto_table[(int) R_390_GOTPLT16]; | |
269 | case BFD_RELOC_390_GOTPLT32: | |
270 | return &elf_howto_table[(int) R_390_GOTPLT32]; | |
271 | case BFD_RELOC_390_GOTPLT64: | |
272 | return &elf_howto_table[(int) R_390_GOTPLT64]; | |
273 | case BFD_RELOC_390_GOTPLTENT: | |
274 | return &elf_howto_table[(int) R_390_GOTPLTENT]; | |
275 | case BFD_RELOC_390_PLTOFF16: | |
276 | return &elf_howto_table[(int) R_390_PLTOFF16]; | |
277 | case BFD_RELOC_390_PLTOFF32: | |
278 | return &elf_howto_table[(int) R_390_PLTOFF32]; | |
279 | case BFD_RELOC_390_PLTOFF64: | |
280 | return &elf_howto_table[(int) R_390_PLTOFF64]; | |
69fc87f1 MS |
281 | case BFD_RELOC_390_TLS_LOAD: |
282 | return &elf_howto_table[(int) R_390_TLS_LOAD]; | |
283 | case BFD_RELOC_390_TLS_GDCALL: | |
284 | return &elf_howto_table[(int) R_390_TLS_GDCALL]; | |
285 | case BFD_RELOC_390_TLS_LDCALL: | |
286 | return &elf_howto_table[(int) R_390_TLS_LDCALL]; | |
287 | case BFD_RELOC_390_TLS_GD64: | |
288 | return &elf_howto_table[(int) R_390_TLS_GD64]; | |
289 | case BFD_RELOC_390_TLS_GOTIE12: | |
290 | return &elf_howto_table[(int) R_390_TLS_GOTIE12]; | |
291 | case BFD_RELOC_390_TLS_GOTIE64: | |
292 | return &elf_howto_table[(int) R_390_TLS_GOTIE64]; | |
293 | case BFD_RELOC_390_TLS_LDM64: | |
294 | return &elf_howto_table[(int) R_390_TLS_LDM64]; | |
295 | case BFD_RELOC_390_TLS_IE64: | |
296 | return &elf_howto_table[(int) R_390_TLS_IE64]; | |
297 | case BFD_RELOC_390_TLS_IEENT: | |
298 | return &elf_howto_table[(int) R_390_TLS_IEENT]; | |
299 | case BFD_RELOC_390_TLS_LE64: | |
300 | return &elf_howto_table[(int) R_390_TLS_LE64]; | |
301 | case BFD_RELOC_390_TLS_LDO64: | |
302 | return &elf_howto_table[(int) R_390_TLS_LDO64]; | |
303 | case BFD_RELOC_390_TLS_DTPMOD: | |
304 | return &elf_howto_table[(int) R_390_TLS_DTPMOD]; | |
305 | case BFD_RELOC_390_TLS_DTPOFF: | |
306 | return &elf_howto_table[(int) R_390_TLS_DTPOFF]; | |
307 | case BFD_RELOC_390_TLS_TPOFF: | |
308 | return &elf_howto_table[(int) R_390_TLS_TPOFF]; | |
bd1ea41b MS |
309 | case BFD_RELOC_390_20: |
310 | return &elf_howto_table[(int) R_390_20]; | |
311 | case BFD_RELOC_390_GOT20: | |
312 | return &elf_howto_table[(int) R_390_GOT20]; | |
313 | case BFD_RELOC_390_GOTPLT20: | |
314 | return &elf_howto_table[(int) R_390_GOTPLT20]; | |
315 | case BFD_RELOC_390_TLS_GOTIE20: | |
316 | return &elf_howto_table[(int) R_390_TLS_GOTIE20]; | |
470b557a AK |
317 | case BFD_RELOC_390_IRELATIVE: |
318 | return &elf_howto_table[(int) R_390_IRELATIVE]; | |
5236c819 MS |
319 | case BFD_RELOC_VTABLE_INHERIT: |
320 | return &elf64_s390_vtinherit_howto; | |
321 | case BFD_RELOC_VTABLE_ENTRY: | |
322 | return &elf64_s390_vtentry_howto; | |
0451c93c MS |
323 | default: |
324 | break; | |
325 | } | |
f3185997 NC |
326 | |
327 | /* xgettext:c-format */ | |
e8f5af78 | 328 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, (int) code); |
f3185997 NC |
329 | bfd_set_error (bfd_error_bad_value); |
330 | return NULL; | |
a85d7ed0 NC |
331 | } |
332 | ||
157090f7 AM |
333 | static reloc_howto_type * |
334 | elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
335 | const char *r_name) | |
336 | { | |
337 | unsigned int i; | |
338 | ||
339 | for (i = 0; | |
340 | i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); | |
341 | i++) | |
342 | if (elf_howto_table[i].name != NULL | |
343 | && strcasecmp (elf_howto_table[i].name, r_name) == 0) | |
344 | return &elf_howto_table[i]; | |
345 | ||
0bc7245a JK |
346 | if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0) |
347 | return &elf64_s390_vtinherit_howto; | |
348 | if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0) | |
349 | return &elf64_s390_vtentry_howto; | |
157090f7 AM |
350 | |
351 | return NULL; | |
352 | } | |
353 | ||
a85d7ed0 NC |
354 | /* We need to use ELF64_R_TYPE so we have our own copy of this function, |
355 | and elf64-s390.c has its own copy. */ | |
356 | ||
f3185997 | 357 | static bfd_boolean |
2c3fc389 NC |
358 | elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
359 | arelent *cache_ptr, | |
360 | Elf_Internal_Rela *dst) | |
a85d7ed0 | 361 | { |
d0fb9a8d | 362 | unsigned int r_type = ELF64_R_TYPE(dst->r_info); |
f3185997 | 363 | |
d0fb9a8d | 364 | switch (r_type) |
a85d7ed0 NC |
365 | { |
366 | case R_390_GNU_VTINHERIT: | |
367 | cache_ptr->howto = &elf64_s390_vtinherit_howto; | |
368 | break; | |
369 | ||
370 | case R_390_GNU_VTENTRY: | |
371 | cache_ptr->howto = &elf64_s390_vtentry_howto; | |
372 | break; | |
373 | ||
374 | default: | |
d0fb9a8d JJ |
375 | if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0])) |
376 | { | |
695344c0 | 377 | /* xgettext:c-format */ |
0aa13fee AM |
378 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
379 | abfd, r_type); | |
f3185997 NC |
380 | bfd_set_error (bfd_error_bad_value); |
381 | return FALSE; | |
d0fb9a8d JJ |
382 | } |
383 | cache_ptr->howto = &elf_howto_table[r_type]; | |
99c79b2e | 384 | } |
f3185997 | 385 | return TRUE; |
a85d7ed0 NC |
386 | } |
387 | ||
69fc87f1 MS |
388 | /* A relocation function which doesn't do anything. */ |
389 | static bfd_reloc_status_type | |
2c3fc389 NC |
390 | s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
391 | arelent *reloc_entry, | |
392 | asymbol *symbol ATTRIBUTE_UNUSED, | |
393 | void * data ATTRIBUTE_UNUSED, | |
394 | asection *input_section, | |
395 | bfd *output_bfd, | |
396 | char **error_message ATTRIBUTE_UNUSED) | |
69fc87f1 MS |
397 | { |
398 | if (output_bfd) | |
399 | reloc_entry->address += input_section->output_offset; | |
400 | return bfd_reloc_ok; | |
401 | } | |
402 | ||
bd1ea41b MS |
403 | /* Handle the large displacement relocs. */ |
404 | static bfd_reloc_status_type | |
2c3fc389 NC |
405 | s390_elf_ldisp_reloc (bfd *abfd, |
406 | arelent *reloc_entry, | |
407 | asymbol *symbol, | |
408 | void * data, | |
409 | asection *input_section, | |
410 | bfd *output_bfd, | |
411 | char **error_message ATTRIBUTE_UNUSED) | |
bd1ea41b MS |
412 | { |
413 | reloc_howto_type *howto = reloc_entry->howto; | |
414 | bfd_vma relocation; | |
415 | bfd_vma insn; | |
416 | ||
417 | if (output_bfd != (bfd *) NULL | |
418 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
419 | && (! howto->partial_inplace | |
420 | || reloc_entry->addend == 0)) | |
421 | { | |
422 | reloc_entry->address += input_section->output_offset; | |
423 | return bfd_reloc_ok; | |
424 | } | |
425 | if (output_bfd != NULL) | |
426 | return bfd_reloc_continue; | |
427 | ||
07515404 | 428 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
bd1ea41b MS |
429 | return bfd_reloc_outofrange; |
430 | ||
431 | relocation = (symbol->value | |
432 | + symbol->section->output_section->vma | |
433 | + symbol->section->output_offset); | |
434 | relocation += reloc_entry->addend; | |
435 | if (howto->pc_relative) | |
436 | { | |
437 | relocation -= (input_section->output_section->vma | |
438 | + input_section->output_offset); | |
439 | relocation -= reloc_entry->address; | |
440 | } | |
441 | ||
68ffbac6 | 442 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
bd1ea41b MS |
443 | insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4; |
444 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
445 | ||
446 | if ((bfd_signed_vma) relocation < - 0x80000 | |
447 | || (bfd_signed_vma) relocation > 0x7ffff) | |
448 | return bfd_reloc_overflow; | |
449 | else | |
450 | return bfd_reloc_ok; | |
451 | } | |
452 | ||
b34976b6 | 453 | static bfd_boolean |
2c3fc389 | 454 | elf_s390_is_local_label_name (bfd *abfd, const char *name) |
a85d7ed0 NC |
455 | { |
456 | if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L')) | |
b34976b6 | 457 | return TRUE; |
a85d7ed0 NC |
458 | |
459 | return _bfd_elf_is_local_label_name (abfd, name); | |
460 | } | |
461 | ||
462 | /* Functions for the 390 ELF linker. */ | |
463 | ||
464 | /* The name of the dynamic interpreter. This is put in the .interp | |
465 | section. */ | |
466 | ||
87049b0d | 467 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1" |
a85d7ed0 | 468 | |
64285810 MS |
469 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
470 | copying dynamic variables from a shared lib into an app's dynbss | |
471 | section, and instead use a dynamic relocation to point into the | |
472 | shared lib. */ | |
473 | #define ELIMINATE_COPY_RELOCS 1 | |
474 | ||
a85d7ed0 NC |
475 | /* The size in bytes of the first entry in the procedure linkage table. */ |
476 | #define PLT_FIRST_ENTRY_SIZE 32 | |
477 | /* The size in bytes of an entry in the procedure linkage table. */ | |
99c79b2e | 478 | #define PLT_ENTRY_SIZE 32 |
a85d7ed0 NC |
479 | |
480 | #define GOT_ENTRY_SIZE 8 | |
481 | ||
470b557a AK |
482 | #define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela) |
483 | ||
afca762f | 484 | /* The first three entries in a global offset table are reserved, |
a85d7ed0 NC |
485 | and the initial contents are unimportant (we zero them out). |
486 | Subsequent entries look like this. See the SVR4 ABI 386 | |
487 | supplement to see how this works. */ | |
488 | ||
489 | /* For the s390, simple addr offset can only be 0 - 4096. | |
490 | To use the full 16777216 TB address space, several instructions | |
491 | are needed to load an address in a register and execute | |
492 | a branch( or just saving the address) | |
493 | ||
99c79b2e | 494 | Furthermore, only r 0 and 1 are free to use!!! */ |
a85d7ed0 NC |
495 | |
496 | /* The first 3 words in the GOT are then reserved. | |
497 | Word 0 is the address of the dynamic table. | |
498 | Word 1 is a pointer to a structure describing the object | |
499 | Word 2 is used to point to the loader entry address. | |
500 | ||
501 | The code for PLT entries looks like this: | |
502 | ||
503 | The GOT holds the address in the PLT to be executed. | |
504 | The loader then gets: | |
3b67f094 MK |
505 | 48(15) = Pointer to the structure describing the object. |
506 | 56(15) = Offset in symbol table | |
a85d7ed0 NC |
507 | The loader must then find the module where the function is |
508 | and insert the address in the GOT. | |
509 | ||
510 | PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1 | |
07d6d2b8 AM |
511 | LG 1,0(1) # 6 bytes Load address from GOT in r1 |
512 | BCR 15,1 # 2 bytes Jump to address | |
513 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
afca762f AK |
514 | LGF 1,12(1) # 6 bytes Load rela.plt offset into r1 |
515 | BRCL 15,-x # 6 bytes Jump to first PLT entry | |
07d6d2b8 | 516 | .long ? # 4 bytes offset into .rela.plt |
a85d7ed0 NC |
517 | |
518 | Total = 32 bytes per PLT entry | |
519 | Fixup at offset 2: relative address to GOT entry | |
520 | Fixup at offset 22: relative branch to PLT0 | |
a7e28bbe | 521 | Fixup at offset 28: 32 bit offset into .rela.plt |
a85d7ed0 | 522 | |
a7e28bbe AK |
523 | A 32 bit offset into the symbol table is enough. It allows for |
524 | .rela.plt sections up to a size of 2 gigabyte. A single dynamic | |
525 | object (the main program, any shared library) is limited to 4GB in | |
526 | size. Having a .rela.plt of 2GB would already make the .plt | |
527 | section bigger than 8GB. */ | |
a85d7ed0 | 528 | |
9aa17453 AK |
529 | static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] = |
530 | { | |
07d6d2b8 AM |
531 | 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */ |
532 | 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */ | |
533 | 0x07, 0xf1, /* br %r1 */ | |
534 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
535 | 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */ | |
536 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */ | |
537 | 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */ | |
9aa17453 | 538 | }; |
a85d7ed0 NC |
539 | |
540 | /* The first PLT entry pushes the offset into the symbol table | |
a7e28bbe AK |
541 | from R1 onto the stack at 56(15) and the loader object info |
542 | at 48(15), loads the loader address in R1 and jumps to it. */ | |
a85d7ed0 NC |
543 | |
544 | /* The first entry in the PLT: | |
545 | ||
546 | PLT0: | |
547 | STG 1,56(15) # r1 contains the offset into the symbol table | |
548 | LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table | |
549 | MVC 48(8,15),8(1) # move loader ino (object struct address) to stack | |
550 | LG 1,16(1) # get entry address of loader | |
551 | BCR 15,1 # jump to loader | |
552 | ||
553 | Fixup at offset 8: relative address to start of GOT. */ | |
554 | ||
9aa17453 AK |
555 | static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] = |
556 | { | |
07d6d2b8 AM |
557 | 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */ |
558 | 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */ | |
559 | 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */ | |
560 | 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */ | |
561 | 0x07, 0xf1, /* br %r1 */ | |
562 | 0x07, 0x00, /* nopr %r0 */ | |
563 | 0x07, 0x00, /* nopr %r0 */ | |
564 | 0x07, 0x00 /* nopr %r0 */ | |
9aa17453 | 565 | }; |
a85d7ed0 | 566 | |
a85d7ed0 NC |
567 | |
568 | /* s390 ELF linker hash entry. */ | |
569 | ||
570 | struct elf_s390_link_hash_entry | |
571 | { | |
0451c93c | 572 | struct elf_link_hash_entry elf; |
a85d7ed0 | 573 | |
5236c819 MS |
574 | /* Number of GOTPLT references for a function. */ |
575 | bfd_signed_vma gotplt_refcount; | |
69fc87f1 MS |
576 | |
577 | #define GOT_UNKNOWN 0 | |
578 | #define GOT_NORMAL 1 | |
579 | #define GOT_TLS_GD 2 | |
580 | #define GOT_TLS_IE 3 | |
581 | #define GOT_TLS_IE_NLT 3 | |
582 | unsigned char tls_type; | |
470b557a AK |
583 | |
584 | /* For pointer equality reasons we might need to change the symbol | |
585 | type from STT_GNU_IFUNC to STT_FUNC together with its value and | |
586 | section entry. So after alloc_dynrelocs only these values should | |
587 | be used. In order to check whether a symbol is IFUNC use | |
588 | s390_is_ifunc_symbol_p. */ | |
589 | bfd_vma ifunc_resolver_address; | |
590 | asection *ifunc_resolver_section; | |
a85d7ed0 NC |
591 | }; |
592 | ||
69fc87f1 MS |
593 | #define elf_s390_hash_entry(ent) \ |
594 | ((struct elf_s390_link_hash_entry *)(ent)) | |
595 | ||
470b557a AK |
596 | /* This structure represents an entry in the local PLT list needed for |
597 | local IFUNC symbols. */ | |
598 | struct plt_entry | |
599 | { | |
600 | /* The section of the local symbol. | |
601 | Set in relocate_section and used in finish_dynamic_sections. */ | |
602 | asection *sec; | |
603 | ||
604 | union | |
605 | { | |
606 | bfd_signed_vma refcount; | |
607 | bfd_vma offset; | |
608 | } plt; | |
609 | }; | |
610 | ||
0ffa91dd NC |
611 | /* NOTE: Keep this structure in sync with |
612 | the one declared in elf32-s390.c. */ | |
69fc87f1 MS |
613 | struct elf_s390_obj_tdata |
614 | { | |
615 | struct elf_obj_tdata root; | |
616 | ||
470b557a AK |
617 | /* A local PLT is needed for ifunc symbols. */ |
618 | struct plt_entry *local_plt; | |
619 | ||
0ffa91dd | 620 | /* TLS type for each local got entry. */ |
69fc87f1 MS |
621 | char *local_got_tls_type; |
622 | }; | |
623 | ||
624 | #define elf_s390_tdata(abfd) \ | |
625 | ((struct elf_s390_obj_tdata *) (abfd)->tdata.any) | |
626 | ||
470b557a AK |
627 | #define elf_s390_local_plt(abfd) \ |
628 | (elf_s390_tdata (abfd)->local_plt) | |
629 | ||
69fc87f1 MS |
630 | #define elf_s390_local_got_tls_type(abfd) \ |
631 | (elf_s390_tdata (abfd)->local_got_tls_type) | |
632 | ||
0ffa91dd NC |
633 | #define is_s390_elf(bfd) \ |
634 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
635 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 636 | && elf_object_id (bfd) == S390_ELF_DATA) |
0ffa91dd | 637 | |
69fc87f1 | 638 | static bfd_boolean |
62d7a5f6 | 639 | elf_s390_mkobject (bfd *abfd) |
69fc87f1 | 640 | { |
0ffa91dd | 641 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata), |
4dfe6ac6 | 642 | S390_ELF_DATA); |
69fc87f1 MS |
643 | } |
644 | ||
645 | static bfd_boolean | |
2c3fc389 | 646 | elf_s390_object_p (bfd *abfd) |
69fc87f1 | 647 | { |
69fc87f1 MS |
648 | /* Set the right machine number for an s390 elf32 file. */ |
649 | return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64); | |
650 | } | |
651 | ||
a85d7ed0 NC |
652 | /* s390 ELF linker hash table. */ |
653 | ||
654 | struct elf_s390_link_hash_table | |
655 | { | |
0451c93c | 656 | struct elf_link_hash_table elf; |
a85d7ed0 | 657 | |
0451c93c | 658 | /* Short-cuts to get to dynamic linker sections. */ |
470b557a | 659 | asection *irelifunc; |
ec338859 | 660 | |
69fc87f1 MS |
661 | union { |
662 | bfd_signed_vma refcount; | |
663 | bfd_vma offset; | |
664 | } tls_ldm_got; | |
665 | ||
87d72d41 AM |
666 | /* Small local sym cache. */ |
667 | struct sym_cache sym_cache; | |
b4cbbe8f AK |
668 | |
669 | /* Options passed from the linker. */ | |
670 | struct s390_elf_params *params; | |
0451c93c | 671 | }; |
a85d7ed0 NC |
672 | |
673 | /* Get the s390 ELF linker hash table from a link_info structure. */ | |
674 | ||
ceada896 AA |
675 | #define elf_s390_hash_table(p) \ |
676 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ | |
677 | == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL) | |
a85d7ed0 | 678 | |
470b557a AK |
679 | #define ELF64 1 |
680 | #include "elf-s390-common.c" | |
681 | ||
a85d7ed0 NC |
682 | /* Create an entry in an s390 ELF linker hash table. */ |
683 | ||
684 | static struct bfd_hash_entry * | |
2c3fc389 NC |
685 | link_hash_newfunc (struct bfd_hash_entry *entry, |
686 | struct bfd_hash_table *table, | |
687 | const char *string) | |
a85d7ed0 | 688 | { |
a85d7ed0 NC |
689 | /* Allocate the structure if it has not already been allocated by a |
690 | subclass. */ | |
0451c93c MS |
691 | if (entry == NULL) |
692 | { | |
693 | entry = bfd_hash_allocate (table, | |
694 | sizeof (struct elf_s390_link_hash_entry)); | |
695 | if (entry == NULL) | |
696 | return entry; | |
697 | } | |
a85d7ed0 NC |
698 | |
699 | /* Call the allocation method of the superclass. */ | |
0451c93c MS |
700 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
701 | if (entry != NULL) | |
a85d7ed0 | 702 | { |
0451c93c MS |
703 | struct elf_s390_link_hash_entry *eh; |
704 | ||
705 | eh = (struct elf_s390_link_hash_entry *) entry; | |
5236c819 | 706 | eh->gotplt_refcount = 0; |
69fc87f1 | 707 | eh->tls_type = GOT_UNKNOWN; |
470b557a AK |
708 | eh->ifunc_resolver_address = 0; |
709 | eh->ifunc_resolver_section = NULL; | |
a85d7ed0 NC |
710 | } |
711 | ||
0451c93c | 712 | return entry; |
a85d7ed0 NC |
713 | } |
714 | ||
715 | /* Create an s390 ELF linker hash table. */ | |
716 | ||
717 | static struct bfd_link_hash_table * | |
2c3fc389 | 718 | elf_s390_link_hash_table_create (bfd *abfd) |
a85d7ed0 NC |
719 | { |
720 | struct elf_s390_link_hash_table *ret; | |
986f0783 | 721 | size_t amt = sizeof (struct elf_s390_link_hash_table); |
a85d7ed0 | 722 | |
7bf52ea2 | 723 | ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt); |
0451c93c | 724 | if (ret == NULL) |
a85d7ed0 NC |
725 | return NULL; |
726 | ||
66eb6687 | 727 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
728 | sizeof (struct elf_s390_link_hash_entry), |
729 | S390_ELF_DATA)) | |
a85d7ed0 | 730 | { |
e2d34d7d | 731 | free (ret); |
a85d7ed0 NC |
732 | return NULL; |
733 | } | |
734 | ||
0451c93c MS |
735 | return &ret->elf.root; |
736 | } | |
737 | ||
0451c93c MS |
738 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
739 | ||
740 | static void | |
2c3fc389 NC |
741 | elf_s390_copy_indirect_symbol (struct bfd_link_info *info, |
742 | struct elf_link_hash_entry *dir, | |
743 | struct elf_link_hash_entry *ind) | |
0451c93c MS |
744 | { |
745 | struct elf_s390_link_hash_entry *edir, *eind; | |
746 | ||
747 | edir = (struct elf_s390_link_hash_entry *) dir; | |
748 | eind = (struct elf_s390_link_hash_entry *) ind; | |
749 | ||
69fc87f1 MS |
750 | if (ind->root.type == bfd_link_hash_indirect |
751 | && dir->got.refcount <= 0) | |
752 | { | |
753 | edir->tls_type = eind->tls_type; | |
754 | eind->tls_type = GOT_UNKNOWN; | |
755 | } | |
756 | ||
64285810 MS |
757 | if (ELIMINATE_COPY_RELOCS |
758 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
759 | && dir->dynamic_adjusted) |
760 | { | |
761 | /* If called to transfer flags for a weakdef during processing | |
762 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
763 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
e81830c5 AM |
764 | if (dir->versioned != versioned_hidden) |
765 | dir->ref_dynamic |= ind->ref_dynamic; | |
f5385ebf AM |
766 | dir->ref_regular |= ind->ref_regular; |
767 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
768 | dir->needs_plt |= ind->needs_plt; | |
769 | } | |
64285810 | 770 | else |
fcfa13d2 | 771 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
0451c93c | 772 | } |
a85d7ed0 | 773 | |
69fc87f1 | 774 | static int |
2c3fc389 NC |
775 | elf_s390_tls_transition (struct bfd_link_info *info, |
776 | int r_type, | |
777 | int is_local) | |
69fc87f1 | 778 | { |
0e1862bb | 779 | if (bfd_link_pic (info)) |
69fc87f1 MS |
780 | return r_type; |
781 | ||
782 | switch (r_type) | |
783 | { | |
784 | case R_390_TLS_GD64: | |
785 | case R_390_TLS_IE64: | |
786 | if (is_local) | |
787 | return R_390_TLS_LE64; | |
788 | return R_390_TLS_IE64; | |
789 | case R_390_TLS_GOTIE64: | |
790 | if (is_local) | |
791 | return R_390_TLS_LE64; | |
792 | return R_390_TLS_GOTIE64; | |
793 | case R_390_TLS_LDM64: | |
794 | return R_390_TLS_LE64; | |
795 | } | |
796 | ||
797 | return r_type; | |
798 | } | |
799 | ||
a85d7ed0 NC |
800 | /* Look through the relocs for a section during the first phase, and |
801 | allocate space in the global offset table or procedure linkage | |
802 | table. */ | |
803 | ||
b34976b6 | 804 | static bfd_boolean |
4dfe6ac6 NC |
805 | elf_s390_check_relocs (bfd *abfd, |
806 | struct bfd_link_info *info, | |
807 | asection *sec, | |
808 | const Elf_Internal_Rela *relocs) | |
a85d7ed0 | 809 | { |
0451c93c | 810 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
811 | Elf_Internal_Shdr *symtab_hdr; |
812 | struct elf_link_hash_entry **sym_hashes; | |
a85d7ed0 NC |
813 | const Elf_Internal_Rela *rel; |
814 | const Elf_Internal_Rela *rel_end; | |
a85d7ed0 | 815 | asection *sreloc; |
5236c819 | 816 | bfd_signed_vma *local_got_refcounts; |
69fc87f1 | 817 | int tls_type, old_tls_type; |
a85d7ed0 | 818 | |
0e1862bb | 819 | if (bfd_link_relocatable (info)) |
b34976b6 | 820 | return TRUE; |
a85d7ed0 | 821 | |
0ffa91dd NC |
822 | BFD_ASSERT (is_s390_elf (abfd)); |
823 | ||
0451c93c | 824 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
825 | if (htab == NULL) |
826 | return FALSE; | |
827 | ||
0ffa91dd | 828 | symtab_hdr = &elf_symtab_hdr (abfd); |
a85d7ed0 | 829 | sym_hashes = elf_sym_hashes (abfd); |
5236c819 | 830 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 831 | |
a85d7ed0 NC |
832 | sreloc = NULL; |
833 | ||
834 | rel_end = relocs + sec->reloc_count; | |
835 | for (rel = relocs; rel < rel_end; rel++) | |
836 | { | |
69fc87f1 | 837 | unsigned int r_type; |
d42c267e | 838 | unsigned int r_symndx; |
a85d7ed0 | 839 | struct elf_link_hash_entry *h; |
470b557a | 840 | Elf_Internal_Sym *isym; |
a85d7ed0 NC |
841 | |
842 | r_symndx = ELF64_R_SYM (rel->r_info); | |
843 | ||
0451c93c MS |
844 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
845 | { | |
695344c0 | 846 | /* xgettext:c-format */ |
871b3ab2 | 847 | _bfd_error_handler (_("%pB: bad symbol index: %d"), |
4eca0228 | 848 | abfd, r_symndx); |
b34976b6 | 849 | return FALSE; |
0451c93c MS |
850 | } |
851 | ||
a85d7ed0 | 852 | if (r_symndx < symtab_hdr->sh_info) |
470b557a AK |
853 | { |
854 | /* A local symbol. */ | |
855 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
856 | abfd, r_symndx); | |
857 | if (isym == NULL) | |
858 | return FALSE; | |
859 | ||
860 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
861 | { | |
862 | struct plt_entry *plt; | |
863 | ||
0cb79d69 AK |
864 | if (htab->elf.dynobj == NULL) |
865 | htab->elf.dynobj = abfd; | |
866 | ||
470b557a AK |
867 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) |
868 | return FALSE; | |
869 | ||
870 | if (local_got_refcounts == NULL) | |
871 | { | |
872 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) | |
873 | return FALSE; | |
874 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
875 | } | |
876 | plt = elf_s390_local_plt (abfd); | |
877 | plt[r_symndx].plt.refcount++; | |
878 | } | |
879 | h = NULL; | |
880 | } | |
a85d7ed0 | 881 | else |
973a3492 L |
882 | { |
883 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
884 | while (h->root.type == bfd_link_hash_indirect | |
885 | || h->root.type == bfd_link_hash_warning) | |
886 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
887 | } | |
a85d7ed0 | 888 | |
5236c819 MS |
889 | /* Create got section and local_got_refcounts array if they |
890 | are needed. */ | |
69fc87f1 MS |
891 | r_type = elf_s390_tls_transition (info, |
892 | ELF64_R_TYPE (rel->r_info), | |
893 | h == NULL); | |
894 | switch (r_type) | |
a85d7ed0 NC |
895 | { |
896 | case R_390_GOT12: | |
947216bf | 897 | case R_390_GOT16: |
bd1ea41b | 898 | case R_390_GOT20: |
a85d7ed0 NC |
899 | case R_390_GOT32: |
900 | case R_390_GOT64: | |
901 | case R_390_GOTENT: | |
5236c819 MS |
902 | case R_390_GOTPLT12: |
903 | case R_390_GOTPLT16: | |
bd1ea41b | 904 | case R_390_GOTPLT20: |
5236c819 MS |
905 | case R_390_GOTPLT32: |
906 | case R_390_GOTPLT64: | |
907 | case R_390_GOTPLTENT: | |
69fc87f1 MS |
908 | case R_390_TLS_GD64: |
909 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 910 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
911 | case R_390_TLS_GOTIE64: |
912 | case R_390_TLS_IEENT: | |
913 | case R_390_TLS_IE64: | |
914 | case R_390_TLS_LDM64: | |
5236c819 MS |
915 | if (h == NULL |
916 | && local_got_refcounts == NULL) | |
a85d7ed0 | 917 | { |
470b557a | 918 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) |
5236c819 | 919 | return FALSE; |
470b557a | 920 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 921 | } |
470b557a | 922 | |
5236c819 MS |
923 | /* Fall through. */ |
924 | case R_390_GOTOFF16: | |
925 | case R_390_GOTOFF32: | |
926 | case R_390_GOTOFF64: | |
0451c93c MS |
927 | case R_390_GOTPC: |
928 | case R_390_GOTPCDBL: | |
f41345a7 | 929 | if (htab->elf.sgot == NULL) |
0451c93c MS |
930 | { |
931 | if (htab->elf.dynobj == NULL) | |
932 | htab->elf.dynobj = abfd; | |
ce558b89 | 933 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) |
b34976b6 | 934 | return FALSE; |
0451c93c | 935 | } |
5236c819 MS |
936 | } |
937 | ||
470b557a AK |
938 | if (h != NULL) |
939 | { | |
940 | if (htab->elf.dynobj == NULL) | |
941 | htab->elf.dynobj = abfd; | |
942 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
943 | return FALSE; | |
944 | ||
945 | /* Make sure an IFUNC symbol defined in a non-shared object | |
946 | always gets a PLT slot. */ | |
947 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
948 | { | |
949 | /* The symbol is called by the dynamic loader in order | |
950 | to resolve the relocation. So it is in fact also | |
951 | referenced. */ | |
952 | h->ref_regular = 1; | |
953 | h->needs_plt = 1; | |
954 | } | |
955 | } | |
956 | ||
69fc87f1 | 957 | switch (r_type) |
5236c819 | 958 | { |
5236c819 MS |
959 | case R_390_GOTPC: |
960 | case R_390_GOTPCDBL: | |
470b557a AK |
961 | /* These relocs do not need a GOT slot. They just load the |
962 | GOT pointer itself or address something else relative to | |
963 | the GOT. Since the GOT pointer has been set up above we | |
964 | are done. */ | |
0451c93c | 965 | break; |
d47b13e0 AK |
966 | case R_390_GOTOFF16: |
967 | case R_390_GOTOFF32: | |
968 | case R_390_GOTOFF64: | |
969 | if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular) | |
970 | break; | |
1a0670f3 | 971 | /* Fall through. */ |
ec338859 | 972 | |
fb798c50 | 973 | case R_390_PLT12DBL: |
947216bf | 974 | case R_390_PLT16DBL: |
fb798c50 | 975 | case R_390_PLT24DBL: |
a85d7ed0 NC |
976 | case R_390_PLT32: |
977 | case R_390_PLT32DBL: | |
978 | case R_390_PLT64: | |
5236c819 MS |
979 | case R_390_PLTOFF16: |
980 | case R_390_PLTOFF32: | |
981 | case R_390_PLTOFF64: | |
a85d7ed0 | 982 | /* This symbol requires a procedure linkage table entry. We |
947216bf AM |
983 | actually build the entry in adjust_dynamic_symbol, |
984 | because this might be a case of linking PIC code which is | |
985 | never referenced by a dynamic object, in which case we | |
986 | don't need to generate a procedure linkage table entry | |
987 | after all. */ | |
ec338859 | 988 | |
a85d7ed0 | 989 | /* If this is a local symbol, we resolve it directly without |
947216bf | 990 | creating a procedure linkage table entry. */ |
5236c819 MS |
991 | if (h != NULL) |
992 | { | |
f5385ebf | 993 | h->needs_plt = 1; |
5236c819 MS |
994 | h->plt.refcount += 1; |
995 | } | |
996 | break; | |
ec338859 | 997 | |
5236c819 MS |
998 | case R_390_GOTPLT12: |
999 | case R_390_GOTPLT16: | |
bd1ea41b | 1000 | case R_390_GOTPLT20: |
5236c819 MS |
1001 | case R_390_GOTPLT32: |
1002 | case R_390_GOTPLT64: | |
1003 | case R_390_GOTPLTENT: | |
1004 | /* This symbol requires either a procedure linkage table entry | |
1005 | or an entry in the local got. We actually build the entry | |
1006 | in adjust_dynamic_symbol because whether this is really a | |
1007 | global reference can change and with it the fact if we have | |
1008 | to create a plt entry or a local got entry. To be able to | |
1009 | make a once global symbol a local one we have to keep track | |
1010 | of the number of gotplt references that exist for this | |
1011 | symbol. */ | |
1012 | if (h != NULL) | |
1013 | { | |
1014 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++; | |
f5385ebf | 1015 | h->needs_plt = 1; |
5236c819 MS |
1016 | h->plt.refcount += 1; |
1017 | } | |
69fc87f1 MS |
1018 | else |
1019 | local_got_refcounts[r_symndx] += 1; | |
1020 | break; | |
1021 | ||
1022 | case R_390_TLS_LDM64: | |
1023 | htab->tls_ldm_got.refcount += 1; | |
1024 | break; | |
1025 | ||
1026 | case R_390_TLS_IE64: | |
1027 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1028 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1029 | case R_390_TLS_GOTIE64: |
1030 | case R_390_TLS_IEENT: | |
0e1862bb | 1031 | if (bfd_link_pic (info)) |
69fc87f1 MS |
1032 | info->flags |= DF_STATIC_TLS; |
1033 | /* Fall through */ | |
1034 | ||
1035 | case R_390_GOT12: | |
26e41594 | 1036 | case R_390_GOT16: |
bd1ea41b | 1037 | case R_390_GOT20: |
69fc87f1 MS |
1038 | case R_390_GOT32: |
1039 | case R_390_GOT64: | |
1040 | case R_390_GOTENT: | |
1041 | case R_390_TLS_GD64: | |
1042 | /* This symbol requires a global offset table entry. */ | |
1043 | switch (r_type) | |
1044 | { | |
1045 | default: | |
1046 | case R_390_GOT12: | |
1047 | case R_390_GOT16: | |
bd1ea41b | 1048 | case R_390_GOT20: |
69fc87f1 MS |
1049 | case R_390_GOT32: |
1050 | case R_390_GOTENT: | |
1051 | tls_type = GOT_NORMAL; | |
1052 | break; | |
1053 | case R_390_TLS_GD64: | |
1054 | tls_type = GOT_TLS_GD; | |
1055 | break; | |
1056 | case R_390_TLS_IE64: | |
1057 | case R_390_TLS_GOTIE64: | |
1058 | tls_type = GOT_TLS_IE; | |
1059 | break; | |
1060 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1061 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1062 | case R_390_TLS_IEENT: |
1063 | tls_type = GOT_TLS_IE_NLT; | |
1064 | break; | |
1065 | } | |
1066 | ||
1067 | if (h != NULL) | |
1068 | { | |
1069 | h->got.refcount += 1; | |
1070 | old_tls_type = elf_s390_hash_entry(h)->tls_type; | |
1071 | } | |
5236c819 MS |
1072 | else |
1073 | { | |
1074 | local_got_refcounts[r_symndx] += 1; | |
69fc87f1 | 1075 | old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx]; |
5236c819 | 1076 | } |
69fc87f1 MS |
1077 | /* If a TLS symbol is accessed using IE at least once, |
1078 | there is no point to use dynamic model for it. */ | |
1079 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN) | |
1080 | { | |
1081 | if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL) | |
1082 | { | |
4eca0228 | 1083 | _bfd_error_handler |
695344c0 | 1084 | /* xgettext:c-format */ |
871b3ab2 | 1085 | (_("%pB: `%s' accessed both as normal and thread local symbol"), |
d003868e | 1086 | abfd, h->root.root.string); |
69fc87f1 MS |
1087 | return FALSE; |
1088 | } | |
1089 | if (old_tls_type > tls_type) | |
1090 | tls_type = old_tls_type; | |
1091 | } | |
1092 | ||
1093 | if (old_tls_type != tls_type) | |
1094 | { | |
1095 | if (h != NULL) | |
1096 | elf_s390_hash_entry (h)->tls_type = tls_type; | |
1097 | else | |
1098 | elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1099 | } | |
1100 | ||
1101 | if (r_type != R_390_TLS_IE64) | |
1102 | break; | |
1103 | /* Fall through */ | |
1104 | ||
1105 | case R_390_TLS_LE64: | |
e00d879a AK |
1106 | /* For static linking and executables this reloc will be |
1107 | calculated at linktime otherwise a TLS_TPOFF runtime | |
1108 | reloc will be generated. */ | |
0e1862bb | 1109 | if (r_type == R_390_TLS_LE64 && bfd_link_pie (info)) |
e00d879a AK |
1110 | break; |
1111 | ||
0e1862bb | 1112 | if (!bfd_link_pic (info)) |
69fc87f1 MS |
1113 | break; |
1114 | info->flags |= DF_STATIC_TLS; | |
1115 | /* Fall through */ | |
ec338859 | 1116 | |
947216bf AM |
1117 | case R_390_8: |
1118 | case R_390_16: | |
a85d7ed0 NC |
1119 | case R_390_32: |
1120 | case R_390_64: | |
fb798c50 | 1121 | case R_390_PC12DBL: |
947216bf AM |
1122 | case R_390_PC16: |
1123 | case R_390_PC16DBL: | |
fb798c50 | 1124 | case R_390_PC24DBL: |
a85d7ed0 NC |
1125 | case R_390_PC32: |
1126 | case R_390_PC32DBL: | |
1127 | case R_390_PC64: | |
99ba5125 | 1128 | if (h != NULL && bfd_link_executable (info)) |
0451c93c MS |
1129 | { |
1130 | /* If this reloc is in a read-only section, we might | |
1131 | need a copy reloc. We can't check reliably at this | |
1132 | stage whether the section is read-only, as input | |
1133 | sections have not yet been mapped to output sections. | |
1134 | Tentatively set the flag for now, and correct in | |
1135 | adjust_dynamic_symbol. */ | |
f5385ebf | 1136 | h->non_got_ref = 1; |
ec338859 | 1137 | |
0e1862bb | 1138 | if (!bfd_link_pic (info)) |
470b557a AK |
1139 | { |
1140 | /* We may need a .plt entry if the function this reloc | |
1141 | refers to is in a shared lib. */ | |
1142 | h->plt.refcount += 1; | |
1143 | } | |
0451c93c | 1144 | } |
ec338859 | 1145 | |
a85d7ed0 | 1146 | /* If we are creating a shared library, and this is a reloc |
0451c93c MS |
1147 | against a global symbol, or a non PC relative reloc |
1148 | against a local symbol, then we need to copy the reloc | |
1149 | into the shared library. However, if we are linking with | |
1150 | -Bsymbolic, we do not need to copy a reloc against a | |
1151 | global symbol which is defined in an object we are | |
1152 | including in the link (i.e., DEF_REGULAR is set). At | |
1153 | this point we have not seen all the input files, so it is | |
1154 | possible that DEF_REGULAR is not set now but will be set | |
1155 | later (it is never cleared). In case of a weak definition, | |
1156 | DEF_REGULAR may be cleared later by a strong definition in | |
1157 | a shared library. We account for that possibility below by | |
1158 | storing information in the relocs_copied field of the hash | |
1159 | table entry. A similar situation occurs when creating | |
1160 | shared libraries and symbol visibility changes render the | |
1161 | symbol local. | |
1162 | ||
1163 | If on the other hand, we are creating an executable, we | |
1164 | may need to keep relocations for symbols satisfied by a | |
1165 | dynamic library if we manage to avoid copy relocs for the | |
1166 | symbol. */ | |
0e1862bb | 1167 | if ((bfd_link_pic (info) |
0451c93c MS |
1168 | && (sec->flags & SEC_ALLOC) != 0 |
1169 | && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16 | |
fb798c50 | 1170 | && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL |
0451c93c | 1171 | && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL |
fb798c50 | 1172 | && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL |
0451c93c MS |
1173 | && ELF64_R_TYPE (rel->r_info) != R_390_PC32 |
1174 | && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL | |
1175 | && ELF64_R_TYPE (rel->r_info) != R_390_PC64) | |
1176 | || (h != NULL | |
8c21ca21 | 1177 | && (! SYMBOLIC_BIND (info, h) |
0451c93c | 1178 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1179 | || !h->def_regular)))) |
64285810 | 1180 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 1181 | && !bfd_link_pic (info) |
0451c93c MS |
1182 | && (sec->flags & SEC_ALLOC) != 0 |
1183 | && h != NULL | |
1184 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 1185 | || !h->def_regular))) |
a85d7ed0 | 1186 | { |
00d8c7a9 AK |
1187 | struct elf_dyn_relocs *p; |
1188 | struct elf_dyn_relocs **head; | |
ec338859 | 1189 | |
0451c93c MS |
1190 | /* We must copy these reloc types into the output file. |
1191 | Create a reloc section in dynobj and make room for | |
1192 | this reloc. */ | |
a85d7ed0 NC |
1193 | if (sreloc == NULL) |
1194 | { | |
440e9cd2 AK |
1195 | if (htab->elf.dynobj == NULL) |
1196 | htab->elf.dynobj = abfd; | |
1197 | ||
83bac4b0 NC |
1198 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1199 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
ec338859 | 1200 | |
a85d7ed0 | 1201 | if (sreloc == NULL) |
83bac4b0 | 1202 | return FALSE; |
a85d7ed0 | 1203 | } |
ec338859 | 1204 | |
0451c93c MS |
1205 | /* If this is a global symbol, we count the number of |
1206 | relocations we need for this symbol. */ | |
1207 | if (h != NULL) | |
a85d7ed0 | 1208 | { |
190eb1dd | 1209 | head = &h->dyn_relocs; |
0451c93c MS |
1210 | } |
1211 | else | |
1212 | { | |
ec338859 AM |
1213 | /* Track dynamic relocs needed for local syms too. |
1214 | We really need local syms available to do this | |
1215 | easily. Oh well. */ | |
ec338859 | 1216 | asection *s; |
6edfbbad DJ |
1217 | void *vpp; |
1218 | ||
87d72d41 AM |
1219 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1220 | abfd, r_symndx); | |
1221 | if (isym == NULL) | |
b34976b6 | 1222 | return FALSE; |
ec338859 | 1223 | |
87d72d41 AM |
1224 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
1225 | if (s == NULL) | |
1226 | s = sec; | |
1227 | ||
6edfbbad | 1228 | vpp = &elf_section_data (s)->local_dynrel; |
00d8c7a9 | 1229 | head = (struct elf_dyn_relocs **) vpp; |
ec338859 AM |
1230 | } |
1231 | ||
1232 | p = *head; | |
1233 | if (p == NULL || p->sec != sec) | |
1234 | { | |
986f0783 | 1235 | size_t amt = sizeof *p; |
00d8c7a9 | 1236 | p = ((struct elf_dyn_relocs *) |
ec338859 AM |
1237 | bfd_alloc (htab->elf.dynobj, amt)); |
1238 | if (p == NULL) | |
b34976b6 | 1239 | return FALSE; |
ec338859 AM |
1240 | p->next = *head; |
1241 | *head = p; | |
1242 | p->sec = sec; | |
1243 | p->count = 0; | |
1244 | p->pc_count = 0; | |
a85d7ed0 | 1245 | } |
ec338859 AM |
1246 | |
1247 | p->count += 1; | |
1248 | if (ELF64_R_TYPE (rel->r_info) == R_390_PC16 | |
fb798c50 AK |
1249 | || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL |
1250 | || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL | |
ec338859 AM |
1251 | || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL |
1252 | || ELF64_R_TYPE (rel->r_info) == R_390_PC32 | |
1253 | || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL | |
1254 | || ELF64_R_TYPE (rel->r_info) == R_390_PC64) | |
1255 | p->pc_count += 1; | |
a85d7ed0 | 1256 | } |
a85d7ed0 | 1257 | break; |
ec338859 | 1258 | |
a85d7ed0 NC |
1259 | /* This relocation describes the C++ object vtable hierarchy. |
1260 | Reconstruct it for later use during GC. */ | |
947216bf | 1261 | case R_390_GNU_VTINHERIT: |
c152c796 | 1262 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 1263 | return FALSE; |
947216bf | 1264 | break; |
ec338859 | 1265 | |
a85d7ed0 NC |
1266 | /* This relocation describes which C++ vtable entries are actually |
1267 | used. Record for later use during GC. */ | |
947216bf | 1268 | case R_390_GNU_VTENTRY: |
a0ea3a14 | 1269 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 1270 | return FALSE; |
947216bf | 1271 | break; |
ec338859 | 1272 | |
a85d7ed0 NC |
1273 | default: |
1274 | break; | |
1275 | } | |
1276 | } | |
1277 | ||
b34976b6 | 1278 | return TRUE; |
a85d7ed0 NC |
1279 | } |
1280 | ||
1281 | /* Return the section that should be marked against GC for a given | |
1282 | relocation. */ | |
1283 | ||
1284 | static asection * | |
07adf181 AM |
1285 | elf_s390_gc_mark_hook (asection *sec, |
1286 | struct bfd_link_info *info, | |
1287 | Elf_Internal_Rela *rel, | |
1288 | struct elf_link_hash_entry *h, | |
1289 | Elf_Internal_Sym *sym) | |
a85d7ed0 NC |
1290 | { |
1291 | if (h != NULL) | |
07adf181 AM |
1292 | switch (ELF64_R_TYPE (rel->r_info)) |
1293 | { | |
1294 | case R_390_GNU_VTINHERIT: | |
1295 | case R_390_GNU_VTENTRY: | |
1296 | return NULL; | |
1297 | } | |
1298 | ||
1299 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
a85d7ed0 NC |
1300 | } |
1301 | ||
5236c819 MS |
1302 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
1303 | entry but we found we will not create any. Called when we find we will | |
1304 | not have any PLT for this symbol, by for example | |
1305 | elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
1306 | or elf_s390_size_dynamic_sections if no dynamic sections will be | |
1307 | created (we're only linking static objects). */ | |
1308 | ||
1309 | static void | |
2c3fc389 | 1310 | elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h) |
5236c819 MS |
1311 | { |
1312 | if (h->elf.root.type == bfd_link_hash_warning) | |
1313 | h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link; | |
1314 | ||
1315 | if (h->gotplt_refcount <= 0) | |
1316 | return; | |
1317 | ||
1318 | /* We simply add the number of gotplt references to the number | |
1319 | * of got references for this symbol. */ | |
1320 | h->elf.got.refcount += h->gotplt_refcount; | |
1321 | h->gotplt_refcount = -1; | |
1322 | } | |
1323 | ||
a85d7ed0 NC |
1324 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1325 | regular object. The current definition is in some section of the | |
1326 | dynamic object, but we're not including those sections. We have to | |
1327 | change the definition to something the rest of the link can | |
1328 | understand. */ | |
1329 | ||
b34976b6 | 1330 | static bfd_boolean |
4dfe6ac6 NC |
1331 | elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info, |
1332 | struct elf_link_hash_entry *h) | |
a85d7ed0 | 1333 | { |
0451c93c | 1334 | struct elf_s390_link_hash_table *htab; |
5474d94f | 1335 | asection *s, *srel; |
a85d7ed0 | 1336 | |
470b557a AK |
1337 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1338 | if (s390_is_ifunc_symbol_p (h)) | |
d8ee9e44 AK |
1339 | { |
1340 | /* All local STT_GNU_IFUNC references must be treated as local | |
1341 | calls via local PLT. */ | |
1342 | if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h)) | |
1343 | { | |
1344 | bfd_size_type pc_count = 0, count = 0; | |
1345 | struct elf_dyn_relocs **pp; | |
d8ee9e44 AK |
1346 | struct elf_dyn_relocs *p; |
1347 | ||
190eb1dd | 1348 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
d8ee9e44 AK |
1349 | { |
1350 | pc_count += p->pc_count; | |
1351 | p->count -= p->pc_count; | |
1352 | p->pc_count = 0; | |
1353 | count += p->count; | |
1354 | if (p->count == 0) | |
1355 | *pp = p->next; | |
1356 | else | |
1357 | pp = &p->next; | |
1358 | } | |
1359 | ||
1360 | if (pc_count || count) | |
1361 | { | |
1362 | h->needs_plt = 1; | |
1363 | h->non_got_ref = 1; | |
1364 | if (h->plt.refcount <= 0) | |
1365 | h->plt.refcount = 1; | |
1366 | else | |
1367 | h->plt.refcount += 1; | |
1368 | } | |
1369 | } | |
1370 | ||
1371 | if (h->plt.refcount <= 0) | |
1372 | { | |
1373 | h->plt.offset = (bfd_vma) -1; | |
1374 | h->needs_plt = 0; | |
1375 | } | |
1376 | return TRUE; | |
1377 | } | |
470b557a | 1378 | |
a85d7ed0 NC |
1379 | /* If this is a function, put it in the procedure linkage table. We |
1380 | will fill in the contents of the procedure linkage table later | |
cedb70c5 | 1381 | (although we could actually do it here). */ |
a85d7ed0 | 1382 | if (h->type == STT_FUNC |
f5385ebf | 1383 | || h->needs_plt) |
a85d7ed0 | 1384 | { |
0451c93c | 1385 | if (h->plt.refcount <= 0 |
8c21ca21 | 1386 | || SYMBOL_CALLS_LOCAL (info, h) |
10e7c045 | 1387 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
a85d7ed0 NC |
1388 | { |
1389 | /* This case can occur if we saw a PLT32 reloc in an input | |
947216bf AM |
1390 | file, but the symbol was never referred to by a dynamic |
1391 | object, or if all references were garbage collected. In | |
0451c93c MS |
1392 | such a case, we don't actually need to build a procedure |
1393 | linkage table, and we can just do a PC32 reloc instead. */ | |
a85d7ed0 | 1394 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1395 | h->needs_plt = 0; |
5236c819 | 1396 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
a85d7ed0 NC |
1397 | } |
1398 | ||
b34976b6 | 1399 | return TRUE; |
a85d7ed0 | 1400 | } |
bbd7ec4a | 1401 | else |
0451c93c MS |
1402 | /* It's possible that we incorrectly decided a .plt reloc was |
1403 | needed for an R_390_PC32 reloc to a non-function sym in | |
1404 | check_relocs. We can't decide accurately between function and | |
1405 | non-function syms in check-relocs; Objects loaded later in | |
1406 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1407 | h->plt.offset = (bfd_vma) -1; |
a85d7ed0 NC |
1408 | |
1409 | /* If this is a weak symbol, and there is a real definition, the | |
1410 | processor independent code will have arranged for us to see the | |
1411 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 1412 | if (h->is_weakalias) |
a85d7ed0 | 1413 | { |
60d67dc8 AM |
1414 | struct elf_link_hash_entry *def = weakdef (h); |
1415 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
1416 | h->root.u.def.section = def->root.u.def.section; | |
1417 | h->root.u.def.value = def->root.u.def.value; | |
64285810 | 1418 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
60d67dc8 | 1419 | h->non_got_ref = def->non_got_ref; |
b34976b6 | 1420 | return TRUE; |
a85d7ed0 NC |
1421 | } |
1422 | ||
1423 | /* This is a reference to a symbol defined by a dynamic object which | |
1424 | is not a function. */ | |
1425 | ||
1426 | /* If we are creating a shared library, we must presume that the | |
1427 | only references to the symbol are via the global offset table. | |
1428 | For such cases we need not do anything here; the relocations will | |
1429 | be handled correctly by relocate_section. */ | |
0e1862bb | 1430 | if (bfd_link_pic (info)) |
b34976b6 | 1431 | return TRUE; |
a85d7ed0 NC |
1432 | |
1433 | /* If there are no references to this symbol that do not use the | |
1434 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 1435 | if (!h->non_got_ref) |
b34976b6 | 1436 | return TRUE; |
a85d7ed0 | 1437 | |
0451c93c MS |
1438 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1439 | if (info->nocopyreloc) | |
1440 | { | |
f5385ebf | 1441 | h->non_got_ref = 0; |
b34976b6 | 1442 | return TRUE; |
0451c93c MS |
1443 | } |
1444 | ||
3bf083ed AM |
1445 | /* If we don't find any dynamic relocs in read-only sections, then |
1446 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
5dbc8b37 | 1447 | if (ELIMINATE_COPY_RELOCS && !_bfd_elf_readonly_dynrelocs (h)) |
0451c93c | 1448 | { |
3bf083ed AM |
1449 | h->non_got_ref = 0; |
1450 | return TRUE; | |
0451c93c MS |
1451 | } |
1452 | ||
a85d7ed0 NC |
1453 | /* We must allocate the symbol in our .dynbss section, which will |
1454 | become part of the .bss section of the executable. There will be | |
1455 | an entry for this symbol in the .dynsym section. The dynamic | |
1456 | object will contain position independent code, so all references | |
1457 | from the dynamic object to this symbol will go through the global | |
1458 | offset table. The dynamic linker will use the .dynsym entry to | |
1459 | determine the address it must put in the global offset table, so | |
1460 | both the dynamic object and the regular object will refer to the | |
1461 | same memory location for the variable. */ | |
1462 | ||
0451c93c | 1463 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
1464 | if (htab == NULL) |
1465 | return FALSE; | |
a85d7ed0 | 1466 | |
0451c93c MS |
1467 | /* We must generate a R_390_COPY reloc to tell the dynamic linker to |
1468 | copy the initial value out of the dynamic object and into the | |
1469 | runtime process image. */ | |
5474d94f AM |
1470 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
1471 | { | |
1472 | s = htab->elf.sdynrelro; | |
1473 | srel = htab->elf.sreldynrelro; | |
1474 | } | |
1475 | else | |
1476 | { | |
1477 | s = htab->elf.sdynbss; | |
1478 | srel = htab->elf.srelbss; | |
1479 | } | |
1d7e9d18 | 1480 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
a85d7ed0 | 1481 | { |
5474d94f | 1482 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 1483 | h->needs_copy = 1; |
a85d7ed0 NC |
1484 | } |
1485 | ||
6cabe1ea | 1486 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a85d7ed0 NC |
1487 | } |
1488 | ||
0451c93c MS |
1489 | /* Allocate space in .plt, .got and associated reloc sections for |
1490 | dynamic relocs. */ | |
1491 | ||
b34976b6 | 1492 | static bfd_boolean |
4dfe6ac6 NC |
1493 | allocate_dynrelocs (struct elf_link_hash_entry *h, |
1494 | void * inf) | |
0451c93c MS |
1495 | { |
1496 | struct bfd_link_info *info; | |
1497 | struct elf_s390_link_hash_table *htab; | |
00d8c7a9 | 1498 | struct elf_dyn_relocs *p; |
0451c93c | 1499 | |
e92d460e | 1500 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1501 | return TRUE; |
0451c93c MS |
1502 | |
1503 | info = (struct bfd_link_info *) inf; | |
1504 | htab = elf_s390_hash_table (info); | |
4dfe6ac6 NC |
1505 | if (htab == NULL) |
1506 | return FALSE; | |
0451c93c | 1507 | |
470b557a AK |
1508 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
1509 | here if it is defined and referenced in a non-shared object. */ | |
1510 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
61643fba | 1511 | return s390_elf_allocate_ifunc_dyn_relocs (info, h); |
470b557a AK |
1512 | else if (htab->elf.dynamic_sections_created |
1513 | && h->plt.refcount > 0) | |
0451c93c MS |
1514 | { |
1515 | /* Make sure this symbol is output as a dynamic symbol. | |
1516 | Undefined weak syms won't yet be marked as dynamic. */ | |
1517 | if (h->dynindx == -1 | |
f5385ebf | 1518 | && !h->forced_local) |
0451c93c | 1519 | { |
c152c796 | 1520 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1521 | return FALSE; |
0451c93c MS |
1522 | } |
1523 | ||
0e1862bb | 1524 | if (bfd_link_pic (info) |
4ec72bde | 1525 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
0451c93c | 1526 | { |
f41345a7 | 1527 | asection *s = htab->elf.splt; |
0451c93c MS |
1528 | |
1529 | /* If this is the first .plt entry, make room for the special | |
1530 | first entry. */ | |
eea6121a AM |
1531 | if (s->size == 0) |
1532 | s->size += PLT_FIRST_ENTRY_SIZE; | |
0451c93c | 1533 | |
eea6121a | 1534 | h->plt.offset = s->size; |
0451c93c MS |
1535 | |
1536 | /* If this symbol is not defined in a regular file, and we are | |
1537 | not generating a shared library, then set the symbol to this | |
1538 | location in the .plt. This is required to make function | |
1539 | pointers compare as equal between the normal executable and | |
1540 | the shared library. */ | |
0e1862bb | 1541 | if (! bfd_link_pic (info) |
f5385ebf | 1542 | && !h->def_regular) |
0451c93c MS |
1543 | { |
1544 | h->root.u.def.section = s; | |
1545 | h->root.u.def.value = h->plt.offset; | |
1546 | } | |
ec338859 | 1547 | |
0451c93c | 1548 | /* Make room for this entry. */ |
eea6121a | 1549 | s->size += PLT_ENTRY_SIZE; |
ec338859 | 1550 | |
afca762f | 1551 | /* We also need to make an entry in the .got.plt section. */ |
f41345a7 | 1552 | htab->elf.sgotplt->size += GOT_ENTRY_SIZE; |
0451c93c MS |
1553 | |
1554 | /* We also need to make an entry in the .rela.plt section. */ | |
f41345a7 | 1555 | htab->elf.srelplt->size += sizeof (Elf64_External_Rela); |
0451c93c MS |
1556 | } |
1557 | else | |
1558 | { | |
1559 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1560 | h->needs_plt = 0; |
5236c819 | 1561 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c MS |
1562 | } |
1563 | } | |
1564 | else | |
1565 | { | |
1566 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1567 | h->needs_plt = 0; |
5236c819 | 1568 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c MS |
1569 | } |
1570 | ||
69fc87f1 MS |
1571 | /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to |
1572 | the binary, we can optimize a bit. IE64 and GOTIE64 get converted | |
1573 | to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT | |
1574 | we can save the dynamic TLS relocation. */ | |
1575 | if (h->got.refcount > 0 | |
0e1862bb | 1576 | && !bfd_link_pic (info) |
69fc87f1 MS |
1577 | && h->dynindx == -1 |
1578 | && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE) | |
1579 | { | |
1580 | if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT) | |
1581 | /* For the GOTIE access without a literal pool entry the offset has | |
1582 | to be stored somewhere. The immediate value in the instruction | |
1583 | is not bit enough so the value is stored in the got. */ | |
1584 | { | |
f41345a7 AK |
1585 | h->got.offset = htab->elf.sgot->size; |
1586 | htab->elf.sgot->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1587 | } |
1588 | else | |
1589 | h->got.offset = (bfd_vma) -1; | |
1590 | } | |
1591 | else if (h->got.refcount > 0) | |
0451c93c MS |
1592 | { |
1593 | asection *s; | |
b34976b6 | 1594 | bfd_boolean dyn; |
69fc87f1 | 1595 | int tls_type = elf_s390_hash_entry(h)->tls_type; |
0451c93c MS |
1596 | |
1597 | /* Make sure this symbol is output as a dynamic symbol. | |
1598 | Undefined weak syms won't yet be marked as dynamic. */ | |
1599 | if (h->dynindx == -1 | |
f5385ebf | 1600 | && !h->forced_local) |
0451c93c | 1601 | { |
c152c796 | 1602 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1603 | return FALSE; |
0451c93c MS |
1604 | } |
1605 | ||
f41345a7 | 1606 | s = htab->elf.sgot; |
eea6121a AM |
1607 | h->got.offset = s->size; |
1608 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1609 | /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */ |
1610 | if (tls_type == GOT_TLS_GD) | |
eea6121a | 1611 | s->size += GOT_ENTRY_SIZE; |
0451c93c | 1612 | dyn = htab->elf.dynamic_sections_created; |
69fc87f1 MS |
1613 | /* R_390_TLS_IE64 needs one dynamic relocation, |
1614 | R_390_TLS_GD64 needs one if local symbol and two if global. */ | |
1615 | if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1616 | || tls_type >= GOT_TLS_IE) | |
f41345a7 | 1617 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); |
69fc87f1 | 1618 | else if (tls_type == GOT_TLS_GD) |
f41345a7 | 1619 | htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela); |
10e7c045 | 1620 | else if (!UNDEFWEAK_NO_DYNAMIC_RELOC (info, h) |
0e1862bb | 1621 | && (bfd_link_pic (info) |
82058a73 | 1622 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
f41345a7 | 1623 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); |
0451c93c MS |
1624 | } |
1625 | else | |
1626 | h->got.offset = (bfd_vma) -1; | |
1627 | ||
190eb1dd | 1628 | if (h->dyn_relocs == NULL) |
b34976b6 | 1629 | return TRUE; |
0451c93c MS |
1630 | |
1631 | /* In the shared -Bsymbolic case, discard space allocated for | |
1632 | dynamic pc-relative relocs against symbols which turn out to be | |
1633 | defined in regular objects. For the normal shared case, discard | |
1634 | space for pc-relative relocs that have become local due to symbol | |
1635 | visibility changes. */ | |
1636 | ||
0e1862bb | 1637 | if (bfd_link_pic (info)) |
0451c93c | 1638 | { |
8c21ca21 | 1639 | if (SYMBOL_CALLS_LOCAL (info, h)) |
0451c93c | 1640 | { |
00d8c7a9 | 1641 | struct elf_dyn_relocs **pp; |
0451c93c | 1642 | |
190eb1dd | 1643 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
0451c93c MS |
1644 | { |
1645 | p->count -= p->pc_count; | |
1646 | p->pc_count = 0; | |
1647 | if (p->count == 0) | |
1648 | *pp = p->next; | |
1649 | else | |
1650 | pp = &p->next; | |
1651 | } | |
1652 | } | |
82058a73 MS |
1653 | |
1654 | /* Also discard relocs on undefined weak syms with non-default | |
1655 | visibility. */ | |
190eb1dd | 1656 | if (h->dyn_relocs != NULL |
82058a73 | 1657 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 | 1658 | { |
b27bb18f L |
1659 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
1660 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
190eb1dd | 1661 | h->dyn_relocs = NULL; |
22d606e9 AM |
1662 | |
1663 | /* Make sure undefined weak symbols are output as a dynamic | |
1664 | symbol in PIEs. */ | |
1665 | else if (h->dynindx == -1 | |
1666 | && !h->forced_local) | |
1667 | { | |
1668 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1669 | return FALSE; | |
1670 | } | |
1671 | } | |
0451c93c | 1672 | } |
64285810 | 1673 | else if (ELIMINATE_COPY_RELOCS) |
0451c93c MS |
1674 | { |
1675 | /* For the non-shared case, discard space for relocs against | |
1676 | symbols which turn out to need copy relocs or are not | |
1677 | dynamic. */ | |
1678 | ||
f5385ebf AM |
1679 | if (!h->non_got_ref |
1680 | && ((h->def_dynamic | |
1681 | && !h->def_regular) | |
0451c93c MS |
1682 | || (htab->elf.dynamic_sections_created |
1683 | && (h->root.type == bfd_link_hash_undefweak | |
1684 | || h->root.type == bfd_link_hash_undefined)))) | |
1685 | { | |
1686 | /* Make sure this symbol is output as a dynamic symbol. | |
1687 | Undefined weak syms won't yet be marked as dynamic. */ | |
1688 | if (h->dynindx == -1 | |
f5385ebf | 1689 | && !h->forced_local) |
0451c93c | 1690 | { |
c152c796 | 1691 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1692 | return FALSE; |
0451c93c MS |
1693 | } |
1694 | ||
1695 | /* If that succeeded, we know we'll be keeping all the | |
1696 | relocs. */ | |
1697 | if (h->dynindx != -1) | |
1698 | goto keep; | |
1699 | } | |
1700 | ||
190eb1dd | 1701 | h->dyn_relocs = NULL; |
0451c93c | 1702 | |
ec338859 | 1703 | keep: ; |
0451c93c MS |
1704 | } |
1705 | ||
1706 | /* Finally, allocate space. */ | |
190eb1dd | 1707 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
0451c93c MS |
1708 | { |
1709 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 1710 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
0451c93c MS |
1711 | } |
1712 | ||
b34976b6 | 1713 | return TRUE; |
0451c93c MS |
1714 | } |
1715 | ||
a85d7ed0 NC |
1716 | /* Set the sizes of the dynamic sections. */ |
1717 | ||
b34976b6 | 1718 | static bfd_boolean |
4dfe6ac6 NC |
1719 | elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
1720 | struct bfd_link_info *info) | |
a85d7ed0 | 1721 | { |
0451c93c | 1722 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
1723 | bfd *dynobj; |
1724 | asection *s; | |
b34976b6 | 1725 | bfd_boolean relocs; |
0451c93c | 1726 | bfd *ibfd; |
a85d7ed0 | 1727 | |
0451c93c | 1728 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
1729 | if (htab == NULL) |
1730 | return FALSE; | |
1731 | ||
0451c93c MS |
1732 | dynobj = htab->elf.dynobj; |
1733 | if (dynobj == NULL) | |
1734 | abort (); | |
a85d7ed0 | 1735 | |
0451c93c | 1736 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
1737 | { |
1738 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 1739 | if (bfd_link_executable (info) && !info->nointerp) |
a85d7ed0 | 1740 | { |
3d4d4302 | 1741 | s = bfd_get_linker_section (dynobj, ".interp"); |
0451c93c MS |
1742 | if (s == NULL) |
1743 | abort (); | |
eea6121a | 1744 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
a85d7ed0 NC |
1745 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1746 | } | |
1747 | } | |
a85d7ed0 | 1748 | |
afca762f AK |
1749 | if (htab->elf.sgot && s390_gotplt_after_got_p (info)) |
1750 | { | |
1751 | /* _bfd_elf_create_got_section adds the got header size always | |
1752 | to .got.plt but we need it in .got if this section comes | |
1753 | first. */ | |
1754 | htab->elf.sgot->size += 3 * GOT_ENTRY_SIZE; | |
1755 | htab->elf.sgotplt->size -= 3 * GOT_ENTRY_SIZE; | |
1756 | ||
1757 | /* Make the _GLOBAL_OFFSET_TABLE_ symbol point to the .got | |
1758 | instead of .got.plt. */ | |
1759 | htab->elf.hgot->root.u.def.section = htab->elf.sgot; | |
1760 | htab->elf.hgot->root.u.def.value = 0; | |
1761 | } | |
1762 | ||
0451c93c MS |
1763 | /* Set up .got offsets for local syms, and space for local dynamic |
1764 | relocs. */ | |
c72f2fb2 | 1765 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a85d7ed0 | 1766 | { |
0451c93c MS |
1767 | bfd_signed_vma *local_got; |
1768 | bfd_signed_vma *end_local_got; | |
69fc87f1 | 1769 | char *local_tls_type; |
0451c93c MS |
1770 | bfd_size_type locsymcount; |
1771 | Elf_Internal_Shdr *symtab_hdr; | |
1772 | asection *srela; | |
470b557a AK |
1773 | struct plt_entry *local_plt; |
1774 | unsigned int i; | |
a85d7ed0 | 1775 | |
0ffa91dd | 1776 | if (! is_s390_elf (ibfd)) |
a85d7ed0 NC |
1777 | continue; |
1778 | ||
0451c93c | 1779 | for (s = ibfd->sections; s != NULL; s = s->next) |
a85d7ed0 | 1780 | { |
00d8c7a9 | 1781 | struct elf_dyn_relocs *p; |
0451c93c | 1782 | |
6edfbbad | 1783 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
a85d7ed0 | 1784 | { |
ec338859 AM |
1785 | if (!bfd_is_abs_section (p->sec) |
1786 | && bfd_is_abs_section (p->sec->output_section)) | |
1787 | { | |
1788 | /* Input section has been discarded, either because | |
1789 | it is a copy of a linkonce section or due to | |
1790 | linker script /DISCARD/, so we'll be discarding | |
1791 | the relocs too. */ | |
1792 | } | |
248866a8 | 1793 | else if (p->count != 0) |
ec338859 AM |
1794 | { |
1795 | srela = elf_section_data (p->sec)->sreloc; | |
eea6121a | 1796 | srela->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
1797 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
1798 | info->flags |= DF_TEXTREL; | |
ec338859 | 1799 | } |
a85d7ed0 NC |
1800 | } |
1801 | } | |
0451c93c MS |
1802 | |
1803 | local_got = elf_local_got_refcounts (ibfd); | |
1804 | if (!local_got) | |
1805 | continue; | |
1806 | ||
0ffa91dd | 1807 | symtab_hdr = &elf_symtab_hdr (ibfd); |
0451c93c MS |
1808 | locsymcount = symtab_hdr->sh_info; |
1809 | end_local_got = local_got + locsymcount; | |
69fc87f1 | 1810 | local_tls_type = elf_s390_local_got_tls_type (ibfd); |
f41345a7 AK |
1811 | s = htab->elf.sgot; |
1812 | srela = htab->elf.srelgot; | |
69fc87f1 | 1813 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
a85d7ed0 | 1814 | { |
0451c93c | 1815 | if (*local_got > 0) |
a85d7ed0 | 1816 | { |
eea6121a AM |
1817 | *local_got = s->size; |
1818 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 | 1819 | if (*local_tls_type == GOT_TLS_GD) |
eea6121a | 1820 | s->size += GOT_ENTRY_SIZE; |
0e1862bb | 1821 | if (bfd_link_pic (info)) |
eea6121a | 1822 | srela->size += sizeof (Elf64_External_Rela); |
a85d7ed0 NC |
1823 | } |
1824 | else | |
0451c93c | 1825 | *local_got = (bfd_vma) -1; |
a85d7ed0 | 1826 | } |
470b557a AK |
1827 | |
1828 | local_plt = elf_s390_local_plt (ibfd); | |
1829 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
1830 | { | |
1831 | if (local_plt[i].plt.refcount > 0) | |
1832 | { | |
1833 | local_plt[i].plt.offset = htab->elf.iplt->size; | |
1834 | htab->elf.iplt->size += PLT_ENTRY_SIZE; | |
1835 | htab->elf.igotplt->size += GOT_ENTRY_SIZE; | |
1836 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
1837 | } | |
1838 | else | |
1839 | local_plt[i].plt.offset = (bfd_vma) -1; | |
1840 | } | |
0451c93c MS |
1841 | } |
1842 | ||
69fc87f1 MS |
1843 | if (htab->tls_ldm_got.refcount > 0) |
1844 | { | |
1845 | /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64 | |
1846 | relocs. */ | |
f41345a7 AK |
1847 | htab->tls_ldm_got.offset = htab->elf.sgot->size; |
1848 | htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE; | |
1849 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); | |
69fc87f1 MS |
1850 | } |
1851 | else | |
1852 | htab->tls_ldm_got.offset = -1; | |
1853 | ||
0451c93c MS |
1854 | /* Allocate global sym .plt and .got entries, and space for global |
1855 | sym dynamic relocs. */ | |
2c3fc389 | 1856 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
0451c93c MS |
1857 | |
1858 | /* We now have determined the sizes of the various dynamic sections. | |
1859 | Allocate memory for them. */ | |
b34976b6 | 1860 | relocs = FALSE; |
0451c93c MS |
1861 | for (s = dynobj->sections; s != NULL; s = s->next) |
1862 | { | |
1863 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1864 | continue; | |
1865 | ||
f41345a7 AK |
1866 | if (s == htab->elf.splt |
1867 | || s == htab->elf.sgot | |
1868 | || s == htab->elf.sgotplt | |
9d19e4fd | 1869 | || s == htab->elf.sdynbss |
5474d94f | 1870 | || s == htab->elf.sdynrelro |
470b557a AK |
1871 | || s == htab->elf.iplt |
1872 | || s == htab->elf.igotplt | |
1873 | || s == htab->irelifunc) | |
0451c93c MS |
1874 | { |
1875 | /* Strip this section if we don't need it; see the | |
1876 | comment below. */ | |
1877 | } | |
fd361982 | 1878 | else if (CONST_STRNEQ (bfd_section_name (s), ".rela")) |
0451c93c | 1879 | { |
f41345a7 | 1880 | if (s->size != 0 && s != htab->elf.srelplt) |
b34976b6 | 1881 | relocs = TRUE; |
ec338859 | 1882 | |
0451c93c MS |
1883 | /* We use the reloc_count field as a counter if we need |
1884 | to copy relocs into the output file. */ | |
1885 | s->reloc_count = 0; | |
1886 | } | |
1887 | else | |
a85d7ed0 NC |
1888 | { |
1889 | /* It's not one of our sections, so don't allocate space. */ | |
1890 | continue; | |
1891 | } | |
1892 | ||
eea6121a | 1893 | if (s->size == 0) |
a85d7ed0 | 1894 | { |
0451c93c MS |
1895 | /* If we don't need this section, strip it from the |
1896 | output file. This is to handle .rela.bss and | |
1897 | .rela.plt. We must create it in | |
1898 | create_dynamic_sections, because it must be created | |
1899 | before the linker maps input sections to output | |
1900 | sections. The linker does that before | |
1901 | adjust_dynamic_symbol is called, and it is that | |
1902 | function which decides whether anything needs to go | |
1903 | into these sections. */ | |
1904 | ||
8423293d | 1905 | s->flags |= SEC_EXCLUDE; |
a85d7ed0 NC |
1906 | continue; |
1907 | } | |
1908 | ||
c456f082 AM |
1909 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1910 | continue; | |
1911 | ||
0451c93c MS |
1912 | /* Allocate memory for the section contents. We use bfd_zalloc |
1913 | here in case unused entries are not reclaimed before the | |
1914 | section's contents are written out. This should not happen, | |
1915 | but this way if it does, we get a R_390_NONE reloc instead | |
1916 | of garbage. */ | |
eea6121a | 1917 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
0451c93c | 1918 | if (s->contents == NULL) |
b34976b6 | 1919 | return FALSE; |
a85d7ed0 NC |
1920 | } |
1921 | ||
0451c93c | 1922 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
1923 | { |
1924 | /* Add some entries to the .dynamic section. We fill in the | |
1925 | values later, in elf_s390_finish_dynamic_sections, but we | |
1926 | must add the entries now so that we get the correct size for | |
1927 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1928 | dynamic linker and used by the debugger. */ | |
dc810e39 | 1929 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 1930 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 1931 | |
0e1862bb | 1932 | if (bfd_link_executable (info)) |
a85d7ed0 | 1933 | { |
dc810e39 | 1934 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 1935 | return FALSE; |
a85d7ed0 NC |
1936 | } |
1937 | ||
f41345a7 | 1938 | if (htab->elf.splt->size != 0) |
a85d7ed0 | 1939 | { |
dc810e39 AM |
1940 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
1941 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1942 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1943 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1944 | return FALSE; |
a85d7ed0 NC |
1945 | } |
1946 | ||
1947 | if (relocs) | |
947216bf AM |
1948 | { |
1949 | if (!add_dynamic_entry (DT_RELA, 0) | |
1950 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1951 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 1952 | return FALSE; |
ec338859 | 1953 | |
0451c93c MS |
1954 | /* If any dynamic relocs apply to a read-only section, |
1955 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 1956 | if ((info->flags & DF_TEXTREL) == 0) |
d49e5065 L |
1957 | elf_link_hash_traverse (&htab->elf, |
1958 | _bfd_elf_maybe_set_textrel, info); | |
ec338859 | 1959 | |
0451c93c MS |
1960 | if ((info->flags & DF_TEXTREL) != 0) |
1961 | { | |
1962 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 1963 | return FALSE; |
0451c93c | 1964 | } |
a85d7ed0 NC |
1965 | } |
1966 | } | |
dc810e39 | 1967 | #undef add_dynamic_entry |
a85d7ed0 | 1968 | |
b34976b6 | 1969 | return TRUE; |
a85d7ed0 NC |
1970 | } |
1971 | ||
69fc87f1 MS |
1972 | /* Return the base VMA address which should be subtracted from real addresses |
1973 | when resolving @dtpoff relocation. | |
1974 | This is PT_TLS segment p_vaddr. */ | |
1975 | ||
1976 | static bfd_vma | |
2c3fc389 | 1977 | dtpoff_base (struct bfd_link_info *info) |
69fc87f1 | 1978 | { |
e1918d23 AM |
1979 | /* If tls_sec is NULL, we should have signalled an error already. */ |
1980 | if (elf_hash_table (info)->tls_sec == NULL) | |
69fc87f1 | 1981 | return 0; |
e1918d23 | 1982 | return elf_hash_table (info)->tls_sec->vma; |
69fc87f1 MS |
1983 | } |
1984 | ||
1985 | /* Return the relocation value for @tpoff relocation | |
1986 | if STT_TLS virtual address is ADDRESS. */ | |
1987 | ||
1988 | static bfd_vma | |
2c3fc389 | 1989 | tpoff (struct bfd_link_info *info, bfd_vma address) |
69fc87f1 | 1990 | { |
e1918d23 | 1991 | struct elf_link_hash_table *htab = elf_hash_table (info); |
69fc87f1 | 1992 | |
e1918d23 AM |
1993 | /* If tls_sec is NULL, we should have signalled an error already. */ |
1994 | if (htab->tls_sec == NULL) | |
69fc87f1 | 1995 | return 0; |
e1918d23 | 1996 | return htab->tls_size + htab->tls_sec->vma - address; |
69fc87f1 MS |
1997 | } |
1998 | ||
1999 | /* Complain if TLS instruction relocation is against an invalid | |
2000 | instruction. */ | |
2001 | ||
2002 | static void | |
2c3fc389 NC |
2003 | invalid_tls_insn (bfd *input_bfd, |
2004 | asection *input_section, | |
2005 | Elf_Internal_Rela *rel) | |
69fc87f1 MS |
2006 | { |
2007 | reloc_howto_type *howto; | |
2008 | ||
2009 | howto = elf_howto_table + ELF64_R_TYPE (rel->r_info); | |
4eca0228 | 2010 | _bfd_error_handler |
695344c0 | 2011 | /* xgettext:c-format */ |
2dcf00ce | 2012 | (_("%pB(%pA+%#" PRIx64 "): invalid instruction for TLS relocation %s"), |
d003868e AM |
2013 | input_bfd, |
2014 | input_section, | |
2dcf00ce | 2015 | (uint64_t) rel->r_offset, |
69fc87f1 | 2016 | howto->name); |
77df2968 | 2017 | bfd_set_error (bfd_error_bad_value); |
69fc87f1 MS |
2018 | } |
2019 | ||
a85d7ed0 NC |
2020 | /* Relocate a 390 ELF section. */ |
2021 | ||
b34976b6 | 2022 | static bfd_boolean |
4dfe6ac6 NC |
2023 | elf_s390_relocate_section (bfd *output_bfd, |
2024 | struct bfd_link_info *info, | |
2025 | bfd *input_bfd, | |
2026 | asection *input_section, | |
2027 | bfd_byte *contents, | |
2028 | Elf_Internal_Rela *relocs, | |
2029 | Elf_Internal_Sym *local_syms, | |
2030 | asection **local_sections) | |
a85d7ed0 | 2031 | { |
0451c93c | 2032 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
2033 | Elf_Internal_Shdr *symtab_hdr; |
2034 | struct elf_link_hash_entry **sym_hashes; | |
2035 | bfd_vma *local_got_offsets; | |
a85d7ed0 NC |
2036 | Elf_Internal_Rela *rel; |
2037 | Elf_Internal_Rela *relend; | |
2038 | ||
7af5d5c4 AM |
2039 | if (!is_s390_elf (input_bfd)) |
2040 | { | |
2041 | bfd_set_error (bfd_error_wrong_format); | |
2042 | return FALSE; | |
2043 | } | |
0ffa91dd | 2044 | |
0451c93c | 2045 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
2046 | if (htab == NULL) |
2047 | return FALSE; | |
2048 | ||
0ffa91dd | 2049 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
a85d7ed0 NC |
2050 | sym_hashes = elf_sym_hashes (input_bfd); |
2051 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2052 | ||
a85d7ed0 NC |
2053 | rel = relocs; |
2054 | relend = relocs + input_section->reloc_count; | |
2055 | for (; rel < relend; rel++) | |
2056 | { | |
5236c819 | 2057 | unsigned int r_type; |
a85d7ed0 NC |
2058 | reloc_howto_type *howto; |
2059 | unsigned long r_symndx; | |
2060 | struct elf_link_hash_entry *h; | |
2061 | Elf_Internal_Sym *sym; | |
2062 | asection *sec; | |
0451c93c | 2063 | bfd_vma off; |
a85d7ed0 | 2064 | bfd_vma relocation; |
b34976b6 | 2065 | bfd_boolean unresolved_reloc; |
a85d7ed0 | 2066 | bfd_reloc_status_type r; |
69fc87f1 | 2067 | int tls_type; |
b27bb18f | 2068 | bfd_boolean resolved_to_zero; |
a85d7ed0 NC |
2069 | |
2070 | r_type = ELF64_R_TYPE (rel->r_info); | |
0451c93c | 2071 | if (r_type == (int) R_390_GNU_VTINHERIT |
947216bf AM |
2072 | || r_type == (int) R_390_GNU_VTENTRY) |
2073 | continue; | |
5236c819 | 2074 | if (r_type >= (int) R_390_max) |
a85d7ed0 NC |
2075 | { |
2076 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2077 | return FALSE; |
a85d7ed0 | 2078 | } |
a85d7ed0 | 2079 | |
b491616a | 2080 | howto = elf_howto_table + r_type; |
a85d7ed0 | 2081 | r_symndx = ELF64_R_SYM (rel->r_info); |
5236c819 | 2082 | |
a85d7ed0 NC |
2083 | h = NULL; |
2084 | sym = NULL; | |
2085 | sec = NULL; | |
b34976b6 | 2086 | unresolved_reloc = FALSE; |
a85d7ed0 NC |
2087 | if (r_symndx < symtab_hdr->sh_info) |
2088 | { | |
2089 | sym = local_syms + r_symndx; | |
2090 | sec = local_sections[r_symndx]; | |
470b557a AK |
2091 | |
2092 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
2093 | { | |
2094 | struct plt_entry *local_plt = elf_s390_local_plt (input_bfd); | |
2095 | if (local_plt == NULL) | |
2096 | return FALSE; | |
2097 | ||
2098 | /* Address of the PLT slot. */ | |
2099 | relocation = (htab->elf.iplt->output_section->vma | |
2100 | + htab->elf.iplt->output_offset | |
2101 | + local_plt[r_symndx].plt.offset); | |
2102 | ||
2103 | switch (r_type) | |
2104 | { | |
31db78f6 AK |
2105 | case R_390_PLTOFF16: |
2106 | case R_390_PLTOFF32: | |
2107 | case R_390_PLTOFF64: | |
afca762f | 2108 | relocation -= s390_got_pointer (info); |
31db78f6 | 2109 | break; |
470b557a AK |
2110 | case R_390_GOTPLT12: |
2111 | case R_390_GOTPLT16: | |
2112 | case R_390_GOTPLT20: | |
2113 | case R_390_GOTPLT32: | |
2114 | case R_390_GOTPLT64: | |
2115 | case R_390_GOTPLTENT: | |
2116 | case R_390_GOT12: | |
2117 | case R_390_GOT16: | |
2118 | case R_390_GOT20: | |
2119 | case R_390_GOT32: | |
2120 | case R_390_GOT64: | |
2121 | case R_390_GOTENT: | |
2122 | { | |
2123 | /* Write the PLT slot address into the GOT slot. */ | |
2124 | bfd_put_64 (output_bfd, relocation, | |
2125 | htab->elf.sgot->contents + | |
2126 | local_got_offsets[r_symndx]); | |
2127 | relocation = (local_got_offsets[r_symndx] + | |
afca762f | 2128 | s390_got_offset (info)); |
470b557a AK |
2129 | |
2130 | if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT) | |
afca762f | 2131 | relocation += s390_got_pointer (info); |
470b557a AK |
2132 | break; |
2133 | } | |
2134 | default: | |
2135 | break; | |
2136 | } | |
2137 | /* The output section is needed later in | |
2138 | finish_dynamic_section when creating the dynamic | |
2139 | relocation. */ | |
2140 | local_plt[r_symndx].sec = sec; | |
2141 | goto do_relocation; | |
2142 | } | |
2143 | else | |
2144 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
a85d7ed0 NC |
2145 | } |
2146 | else | |
2147 | { | |
560e09e9 | 2148 | bfd_boolean warned ATTRIBUTE_UNUSED; |
62d887d4 | 2149 | bfd_boolean ignored ATTRIBUTE_UNUSED; |
0451c93c | 2150 | |
b2a8e766 AM |
2151 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2152 | r_symndx, symtab_hdr, sym_hashes, | |
2153 | h, sec, relocation, | |
62d887d4 | 2154 | unresolved_reloc, warned, ignored); |
a85d7ed0 NC |
2155 | } |
2156 | ||
dbaa2011 | 2157 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 2158 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 2159 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 2160 | |
0e1862bb | 2161 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
2162 | continue; |
2163 | ||
b27bb18f L |
2164 | resolved_to_zero = (h != NULL |
2165 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
2166 | ||
a85d7ed0 NC |
2167 | switch (r_type) |
2168 | { | |
5236c819 MS |
2169 | case R_390_GOTPLT12: |
2170 | case R_390_GOTPLT16: | |
bd1ea41b | 2171 | case R_390_GOTPLT20: |
5236c819 MS |
2172 | case R_390_GOTPLT32: |
2173 | case R_390_GOTPLT64: | |
2174 | case R_390_GOTPLTENT: | |
2175 | /* There are three cases for a GOTPLT relocation. 1) The | |
2176 | relocation is against the jump slot entry of a plt that | |
2177 | will get emitted to the output file. 2) The relocation | |
2178 | is against the jump slot of a plt entry that has been | |
2179 | removed. elf_s390_adjust_gotplt has created a GOT entry | |
2180 | as replacement. 3) The relocation is against a local symbol. | |
2181 | Cases 2) and 3) are the same as the GOT relocation code | |
2182 | so we just have to test for case 1 and fall through for | |
2183 | the other two. */ | |
2184 | if (h != NULL && h->plt.offset != (bfd_vma) -1) | |
2185 | { | |
2186 | bfd_vma plt_index; | |
2187 | ||
470b557a AK |
2188 | if (s390_is_ifunc_symbol_p (h)) |
2189 | { | |
afca762f AK |
2190 | /* Entry indices of .iplt and .igot.plt match |
2191 | 1:1. No magic PLT first entry here. */ | |
470b557a | 2192 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; |
afca762f AK |
2193 | relocation = (plt_index * GOT_ENTRY_SIZE |
2194 | + s390_gotplt_offset (info) | |
2195 | + htab->elf.igotplt->output_offset); | |
470b557a AK |
2196 | } |
2197 | else | |
2198 | { | |
afca762f AK |
2199 | plt_index = ((h->plt.offset - PLT_FIRST_ENTRY_SIZE) |
2200 | / PLT_ENTRY_SIZE); | |
2201 | ||
2202 | relocation = (plt_index * GOT_ENTRY_SIZE | |
2203 | + s390_gotplt_offset (info)); | |
470b557a | 2204 | } |
afca762f AK |
2205 | if (r_type == R_390_GOTPLTENT) |
2206 | relocation += s390_got_pointer (info); | |
5236c819 | 2207 | unresolved_reloc = FALSE; |
5236c819 MS |
2208 | break; |
2209 | } | |
2210 | /* Fall through. */ | |
2211 | ||
947216bf AM |
2212 | case R_390_GOT12: |
2213 | case R_390_GOT16: | |
bd1ea41b | 2214 | case R_390_GOT20: |
947216bf AM |
2215 | case R_390_GOT32: |
2216 | case R_390_GOT64: | |
2217 | case R_390_GOTENT: | |
2218 | /* Relocation is to the entry for this symbol in the global | |
2219 | offset table. */ | |
afca762f | 2220 | if (htab->elf.sgot == NULL) |
0451c93c | 2221 | abort (); |
a85d7ed0 | 2222 | |
947216bf AM |
2223 | if (h != NULL) |
2224 | { | |
b34976b6 | 2225 | bfd_boolean dyn; |
a85d7ed0 | 2226 | |
947216bf | 2227 | off = h->got.offset; |
0451c93c | 2228 | dyn = htab->elf.dynamic_sections_created; |
470b557a AK |
2229 | |
2230 | if (s390_is_ifunc_symbol_p (h)) | |
2231 | { | |
2232 | BFD_ASSERT (h->plt.offset != (bfd_vma) -1); | |
2233 | if (off == (bfd_vma)-1) | |
2234 | { | |
2235 | /* No explicit GOT usage so redirect to the | |
2236 | got.iplt slot. */ | |
afca762f AK |
2237 | relocation = (s390_gotplt_offset (info) |
2238 | + htab->elf.igotplt->output_offset | |
2239 | + (h->plt.offset / PLT_ENTRY_SIZE | |
2240 | * GOT_ENTRY_SIZE)); | |
2241 | ||
2242 | /* For @GOTENT the relocation is against the offset between | |
2243 | the instruction and the symbols entry in the GOT and not | |
2244 | between the start of the GOT and the symbols entry. We | |
2245 | add the vma of the GOT to get the correct value. */ | |
2246 | if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT) | |
2247 | relocation += s390_got_pointer (info); | |
2248 | ||
2249 | break; | |
470b557a AK |
2250 | } |
2251 | else | |
2252 | { | |
2253 | /* Explicit GOT slots must contain the address | |
2254 | of the PLT slot. This will be handled in | |
2255 | finish_dynamic_symbol. */ | |
2256 | } | |
2257 | } | |
0e1862bb L |
2258 | else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
2259 | bfd_link_pic (info), | |
2260 | h) | |
2261 | || (bfd_link_pic (info) | |
470b557a | 2262 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
10e7c045 | 2263 | || resolved_to_zero) |
947216bf | 2264 | { |
e6213e09 AK |
2265 | Elf_Internal_Sym *isym; |
2266 | asection *sym_sec; | |
2267 | ||
947216bf AM |
2268 | /* This is actually a static link, or it is a |
2269 | -Bsymbolic link and the symbol is defined | |
2270 | locally, or the symbol was forced to be local | |
2271 | because of a version file. We must initialize | |
2272 | this entry in the global offset table. Since the | |
2273 | offset must always be a multiple of 2, we use the | |
2274 | least significant bit to record whether we have | |
2275 | initialized it already. | |
2276 | ||
2277 | When doing a dynamic link, we create a .rel.got | |
2278 | relocation entry to initialize the value. This | |
2279 | is done in the finish_dynamic_symbol routine. */ | |
2280 | if ((off & 1) != 0) | |
2281 | off &= ~1; | |
2282 | else | |
2283 | { | |
a85d7ed0 | 2284 | bfd_put_64 (output_bfd, relocation, |
afca762f | 2285 | htab->elf.sgot->contents + off); |
947216bf AM |
2286 | h->got.offset |= 1; |
2287 | } | |
a63cc5f7 | 2288 | |
e6213e09 AK |
2289 | /* When turning a GOT slot dereference into a direct |
2290 | reference using larl we have to make sure that | |
2291 | the symbol is 1. properly aligned and 2. it is no | |
2292 | ABS symbol or will become one. */ | |
a63cc5f7 | 2293 | if ((h->def_regular |
0e1862bb | 2294 | && bfd_link_pic (info) |
a63cc5f7 AK |
2295 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
2296 | /* lgrl rx,sym@GOTENT -> larl rx, sym */ | |
2297 | && ((r_type == R_390_GOTENT | |
2298 | && (bfd_get_16 (input_bfd, | |
2299 | contents + rel->r_offset - 2) | |
2300 | & 0xff0f) == 0xc408) | |
2301 | /* lg rx, sym@GOT(r12) -> larl rx, sym */ | |
2302 | || (r_type == R_390_GOT20 | |
2303 | && (bfd_get_32 (input_bfd, | |
2304 | contents + rel->r_offset - 2) | |
2305 | & 0xff00f000) == 0xe300c000 | |
2306 | && bfd_get_8 (input_bfd, | |
e6213e09 AK |
2307 | contents + rel->r_offset + 3) == 0x04)) |
2308 | && (isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
2309 | input_bfd, r_symndx)) | |
2310 | && isym->st_shndx != SHN_ABS | |
2311 | && h != htab->elf.hdynamic | |
2312 | && h != htab->elf.hgot | |
2313 | && h != htab->elf.hplt | |
2314 | && !(isym->st_value & 1) | |
2315 | && (sym_sec = bfd_section_from_elf_index (input_bfd, | |
2316 | isym->st_shndx)) | |
2317 | && sym_sec->alignment_power) | |
a63cc5f7 AK |
2318 | { |
2319 | unsigned short new_insn = | |
2320 | (0xc000 | (bfd_get_8 (input_bfd, | |
2321 | contents + rel->r_offset - 1) & 0xf0)); | |
2322 | bfd_put_16 (output_bfd, new_insn, | |
2323 | contents + rel->r_offset - 2); | |
2324 | r_type = R_390_PC32DBL; | |
2325 | rel->r_addend = 2; | |
2326 | howto = elf_howto_table + r_type; | |
2327 | relocation = h->root.u.def.value | |
2328 | + h->root.u.def.section->output_section->vma | |
2329 | + h->root.u.def.section->output_offset; | |
2330 | goto do_relocation; | |
2331 | } | |
947216bf | 2332 | } |
0451c93c | 2333 | else |
b34976b6 | 2334 | unresolved_reloc = FALSE; |
947216bf AM |
2335 | } |
2336 | else | |
2337 | { | |
0451c93c MS |
2338 | if (local_got_offsets == NULL) |
2339 | abort (); | |
a85d7ed0 | 2340 | |
947216bf | 2341 | off = local_got_offsets[r_symndx]; |
a85d7ed0 | 2342 | |
947216bf AM |
2343 | /* The offset must always be a multiple of 8. We use |
2344 | the least significant bit to record whether we have | |
2345 | already generated the necessary reloc. */ | |
2346 | if ((off & 1) != 0) | |
2347 | off &= ~1; | |
2348 | else | |
2349 | { | |
2350 | bfd_put_64 (output_bfd, relocation, | |
f41345a7 | 2351 | htab->elf.sgot->contents + off); |
a85d7ed0 | 2352 | |
0e1862bb | 2353 | if (bfd_link_pic (info)) |
947216bf AM |
2354 | { |
2355 | asection *s; | |
2356 | Elf_Internal_Rela outrel; | |
2357 | bfd_byte *loc; | |
a85d7ed0 | 2358 | |
f41345a7 | 2359 | s = htab->elf.srelgot; |
947216bf | 2360 | if (s == NULL) |
0451c93c | 2361 | abort (); |
a85d7ed0 | 2362 | |
f41345a7 AK |
2363 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2364 | + htab->elf.sgot->output_offset | |
947216bf AM |
2365 | + off); |
2366 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); | |
a85d7ed0 | 2367 | outrel.r_addend = relocation; |
947216bf AM |
2368 | loc = s->contents; |
2369 | loc += s->reloc_count++ * sizeof (Elf64_External_Rela); | |
2370 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2371 | } | |
a85d7ed0 | 2372 | |
947216bf AM |
2373 | local_got_offsets[r_symndx] |= 1; |
2374 | } | |
2375 | } | |
a85d7ed0 | 2376 | |
0451c93c MS |
2377 | if (off >= (bfd_vma) -2) |
2378 | abort (); | |
2379 | ||
afca762f | 2380 | relocation = s390_got_offset (info) + off; |
0451c93c | 2381 | |
ae9a127f NC |
2382 | /* For @GOTENT the relocation is against the offset between |
2383 | the instruction and the symbols entry in the GOT and not | |
2384 | between the start of the GOT and the symbols entry. We | |
2385 | add the vma of the GOT to get the correct value. */ | |
5236c819 MS |
2386 | if ( r_type == R_390_GOTENT |
2387 | || r_type == R_390_GOTPLTENT) | |
afca762f | 2388 | relocation += s390_got_pointer (info); |
a85d7ed0 | 2389 | |
947216bf | 2390 | break; |
99c79b2e | 2391 | |
5236c819 MS |
2392 | case R_390_GOTOFF16: |
2393 | case R_390_GOTOFF32: | |
2394 | case R_390_GOTOFF64: | |
947216bf AM |
2395 | /* Relocation is relative to the start of the global offset |
2396 | table. */ | |
a85d7ed0 | 2397 | |
d47b13e0 AK |
2398 | if (h != NULL |
2399 | && s390_is_ifunc_symbol_p (h) | |
2400 | && h->def_regular | |
2401 | && !bfd_link_executable (info)) | |
2402 | { | |
2403 | relocation = (htab->elf.iplt->output_section->vma | |
2404 | + htab->elf.iplt->output_offset | |
2405 | + h->plt.offset | |
afca762f | 2406 | - s390_got_pointer (info)); |
d47b13e0 AK |
2407 | goto do_relocation; |
2408 | } | |
2409 | ||
afca762f | 2410 | relocation -= s390_got_pointer (info); |
947216bf | 2411 | break; |
a85d7ed0 | 2412 | |
947216bf | 2413 | case R_390_GOTPC: |
a85d7ed0 | 2414 | case R_390_GOTPCDBL: |
947216bf | 2415 | /* Use global offset table as symbol value. */ |
afca762f | 2416 | relocation = s390_got_pointer (info); |
b34976b6 | 2417 | unresolved_reloc = FALSE; |
947216bf | 2418 | break; |
a85d7ed0 | 2419 | |
fb798c50 | 2420 | case R_390_PLT12DBL: |
947216bf | 2421 | case R_390_PLT16DBL: |
fb798c50 | 2422 | case R_390_PLT24DBL: |
947216bf AM |
2423 | case R_390_PLT32: |
2424 | case R_390_PLT32DBL: | |
2425 | case R_390_PLT64: | |
2426 | /* Relocation is to the entry for this symbol in the | |
2427 | procedure linkage table. */ | |
a85d7ed0 | 2428 | |
947216bf AM |
2429 | /* Resolve a PLT32 reloc against a local symbol directly, |
2430 | without using the procedure linkage table. */ | |
2431 | if (h == NULL) | |
2432 | break; | |
a85d7ed0 | 2433 | |
947216bf | 2434 | if (h->plt.offset == (bfd_vma) -1 |
31db78f6 | 2435 | || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h))) |
947216bf AM |
2436 | { |
2437 | /* We didn't make a PLT entry for this symbol. This | |
2438 | happens when statically linking PIC code, or when | |
2439 | using -Bsymbolic. */ | |
2440 | break; | |
2441 | } | |
470b557a AK |
2442 | if (s390_is_ifunc_symbol_p (h)) |
2443 | relocation = (htab->elf.iplt->output_section->vma | |
2444 | + htab->elf.iplt->output_offset | |
2445 | + h->plt.offset); | |
2446 | else | |
2447 | relocation = (htab->elf.splt->output_section->vma | |
2448 | + htab->elf.splt->output_offset | |
2449 | + h->plt.offset); | |
b34976b6 | 2450 | unresolved_reloc = FALSE; |
26e41594 | 2451 | break; |
5236c819 MS |
2452 | |
2453 | case R_390_PLTOFF16: | |
2454 | case R_390_PLTOFF32: | |
2455 | case R_390_PLTOFF64: | |
26e41594 AM |
2456 | /* Relocation is to the entry for this symbol in the |
2457 | procedure linkage table relative to the start of the GOT. */ | |
5236c819 MS |
2458 | |
2459 | /* For local symbols or if we didn't make a PLT entry for | |
2460 | this symbol resolve the symbol directly. */ | |
31db78f6 | 2461 | if (h == NULL |
5236c819 | 2462 | || h->plt.offset == (bfd_vma) -1 |
31db78f6 | 2463 | || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h))) |
5236c819 | 2464 | { |
afca762f | 2465 | relocation -= s390_got_pointer (info); |
5236c819 MS |
2466 | break; |
2467 | } | |
2468 | ||
470b557a AK |
2469 | if (s390_is_ifunc_symbol_p (h)) |
2470 | relocation = (htab->elf.iplt->output_section->vma | |
2471 | + htab->elf.iplt->output_offset | |
2472 | + h->plt.offset | |
afca762f | 2473 | - s390_got_pointer (info)); |
470b557a AK |
2474 | else |
2475 | relocation = (htab->elf.splt->output_section->vma | |
2476 | + htab->elf.splt->output_offset | |
2477 | + h->plt.offset | |
afca762f | 2478 | - s390_got_pointer (info)); |
5236c819 | 2479 | unresolved_reloc = FALSE; |
947216bf AM |
2480 | break; |
2481 | ||
947216bf | 2482 | case R_390_PC16: |
fb798c50 | 2483 | case R_390_PC12DBL: |
947216bf | 2484 | case R_390_PC16DBL: |
fb798c50 | 2485 | case R_390_PC24DBL: |
947216bf | 2486 | case R_390_PC32: |
a85d7ed0 | 2487 | case R_390_PC32DBL: |
947216bf | 2488 | case R_390_PC64: |
431e5de3 AK |
2489 | if (h != NULL |
2490 | && bfd_link_pie (info) | |
2491 | && !h->def_regular) | |
2492 | { | |
871b3ab2 | 2493 | _bfd_error_handler (_("%pB: `%s' non-PLT reloc for symbol defined " |
431e5de3 AK |
2494 | "in shared library and accessed " |
2495 | "from executable " | |
2496 | "(rebuild file with -fPIC ?)"), | |
2497 | input_bfd, h->root.root.string); | |
2498 | bfd_set_error (bfd_error_bad_value); | |
2499 | return FALSE; | |
2500 | } | |
99ba5125 AK |
2501 | /* The target of these relocs are instruction operands |
2502 | residing in read-only sections. We cannot emit a runtime | |
2503 | reloc for it. */ | |
2504 | if (h != NULL | |
2505 | && s390_is_ifunc_symbol_p (h) | |
2506 | && h->def_regular | |
2507 | && bfd_link_pic (info)) | |
2508 | { | |
2509 | relocation = (htab->elf.iplt->output_section->vma | |
2510 | + htab->elf.iplt->output_offset | |
2511 | + h->plt.offset); | |
2512 | goto do_relocation; | |
2513 | } | |
1a0670f3 | 2514 | /* Fall through. */ |
99ba5125 AK |
2515 | |
2516 | case R_390_8: | |
2517 | case R_390_16: | |
2518 | case R_390_32: | |
2519 | case R_390_64: | |
470b557a | 2520 | |
f657f8c4 NC |
2521 | if ((input_section->flags & SEC_ALLOC) == 0) |
2522 | break; | |
2523 | ||
470b557a AK |
2524 | if (h != NULL |
2525 | && s390_is_ifunc_symbol_p (h) | |
2526 | && h->def_regular) | |
2527 | { | |
d7ab4911 | 2528 | if (!bfd_link_pic (info)) |
470b557a | 2529 | { |
d7ab4911 AK |
2530 | /* For a non-shared object the symbol will not |
2531 | change. Hence we can write the address of the | |
2532 | target IPLT slot now. */ | |
470b557a AK |
2533 | relocation = (htab->elf.iplt->output_section->vma |
2534 | + htab->elf.iplt->output_offset | |
2535 | + h ->plt.offset); | |
2536 | goto do_relocation; | |
2537 | } | |
2538 | else | |
2539 | { | |
2540 | /* For shared objects a runtime relocation is needed. */ | |
2541 | ||
2542 | Elf_Internal_Rela outrel; | |
2543 | asection *sreloc; | |
2544 | ||
2545 | /* Need a dynamic relocation to get the real function | |
2546 | address. */ | |
2547 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
2548 | info, | |
2549 | input_section, | |
2550 | rel->r_offset); | |
2551 | if (outrel.r_offset == (bfd_vma) -1 | |
2552 | || outrel.r_offset == (bfd_vma) -2) | |
2553 | abort (); | |
2554 | ||
2555 | outrel.r_offset += (input_section->output_section->vma | |
2556 | + input_section->output_offset); | |
2557 | ||
2558 | if (h->dynindx == -1 | |
2559 | || h->forced_local | |
0e1862bb | 2560 | || bfd_link_executable (info)) |
470b557a AK |
2561 | { |
2562 | /* This symbol is resolved locally. */ | |
2563 | outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE); | |
2564 | outrel.r_addend = (h->root.u.def.value | |
2565 | + h->root.u.def.section->output_section->vma | |
2566 | + h->root.u.def.section->output_offset); | |
2567 | } | |
2568 | else | |
2569 | { | |
2570 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); | |
2571 | outrel.r_addend = 0; | |
2572 | } | |
2573 | ||
2574 | sreloc = htab->elf.irelifunc; | |
2575 | elf_append_rela (output_bfd, sreloc, &outrel); | |
2576 | ||
2577 | /* If this reloc is against an external symbol, we | |
2578 | do not want to fiddle with the addend. Otherwise, | |
2579 | we need to include the symbol value so that it | |
2580 | becomes an addend for the dynamic reloc. For an | |
2581 | internal symbol, we have updated addend. */ | |
2582 | continue; | |
2583 | } | |
2584 | } | |
2585 | ||
0e1862bb | 2586 | if ((bfd_link_pic (info) |
82058a73 | 2587 | && (h == NULL |
b27bb18f L |
2588 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2589 | && !resolved_to_zero) | |
82058a73 | 2590 | || h->root.type != bfd_link_hash_undefweak) |
0451c93c | 2591 | && ((r_type != R_390_PC16 |
fb798c50 | 2592 | && r_type != R_390_PC12DBL |
0451c93c | 2593 | && r_type != R_390_PC16DBL |
fb798c50 | 2594 | && r_type != R_390_PC24DBL |
0451c93c MS |
2595 | && r_type != R_390_PC32 |
2596 | && r_type != R_390_PC32DBL | |
2597 | && r_type != R_390_PC64) | |
8c21ca21 | 2598 | || !SYMBOL_CALLS_LOCAL (info, h))) |
64285810 | 2599 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 2600 | && !bfd_link_pic (info) |
0451c93c MS |
2601 | && h != NULL |
2602 | && h->dynindx != -1 | |
f5385ebf AM |
2603 | && !h->non_got_ref |
2604 | && ((h->def_dynamic | |
2605 | && !h->def_regular) | |
0451c93c MS |
2606 | || h->root.type == bfd_link_hash_undefweak |
2607 | || h->root.type == bfd_link_hash_undefined))) | |
947216bf AM |
2608 | { |
2609 | Elf_Internal_Rela outrel; | |
b34976b6 | 2610 | bfd_boolean skip, relocate; |
0451c93c | 2611 | asection *sreloc; |
947216bf | 2612 | bfd_byte *loc; |
a85d7ed0 | 2613 | |
947216bf AM |
2614 | /* When generating a shared object, these relocations |
2615 | are copied into the output file to be resolved at run | |
2616 | time. */ | |
b34976b6 AM |
2617 | skip = FALSE; |
2618 | relocate = FALSE; | |
a85d7ed0 | 2619 | |
c629eae0 JJ |
2620 | outrel.r_offset = |
2621 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2622 | rel->r_offset); | |
2623 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2624 | skip = TRUE; |
0bb2d96a | 2625 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2626 | skip = TRUE, relocate = TRUE; |
a85d7ed0 | 2627 | |
947216bf AM |
2628 | outrel.r_offset += (input_section->output_section->vma |
2629 | + input_section->output_offset); | |
a85d7ed0 | 2630 | |
947216bf | 2631 | if (skip) |
0bb2d96a | 2632 | memset (&outrel, 0, sizeof outrel); |
947216bf | 2633 | else if (h != NULL |
0451c93c MS |
2634 | && h->dynindx != -1 |
2635 | && (r_type == R_390_PC16 | |
fb798c50 | 2636 | || r_type == R_390_PC12DBL |
0451c93c | 2637 | || r_type == R_390_PC16DBL |
fb798c50 | 2638 | || r_type == R_390_PC24DBL |
0451c93c MS |
2639 | || r_type == R_390_PC32 |
2640 | || r_type == R_390_PC32DBL | |
2641 | || r_type == R_390_PC64 | |
0e1862bb | 2642 | || !bfd_link_pic (info) |
8c21ca21 | 2643 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 2644 | || !h->def_regular)) |
947216bf AM |
2645 | { |
2646 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); | |
27018c3f | 2647 | outrel.r_addend = rel->r_addend; |
947216bf AM |
2648 | } |
2649 | else | |
2650 | { | |
0451c93c | 2651 | /* This symbol is local, or marked to become local. */ |
90ced0dd | 2652 | outrel.r_addend = relocation + rel->r_addend; |
b5727d75 MS |
2653 | if (r_type == R_390_64) |
2654 | { | |
2655 | relocate = TRUE; | |
2656 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); | |
b5727d75 MS |
2657 | } |
2658 | else | |
2659 | { | |
2660 | long sindx; | |
2661 | ||
90ced0dd | 2662 | if (bfd_is_abs_section (sec)) |
b5727d75 MS |
2663 | sindx = 0; |
2664 | else if (sec == NULL || sec->owner == NULL) | |
2665 | { | |
2666 | bfd_set_error(bfd_error_bad_value); | |
2667 | return FALSE; | |
2668 | } | |
2669 | else | |
2670 | { | |
2671 | asection *osec; | |
2672 | ||
2673 | osec = sec->output_section; | |
2674 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
2675 | |
2676 | if (sindx == 0) | |
2677 | { | |
2678 | osec = htab->elf.text_index_section; | |
2679 | sindx = elf_section_data (osec)->dynindx; | |
2680 | } | |
2681 | BFD_ASSERT (sindx != 0); | |
90ced0dd MS |
2682 | |
2683 | /* We are turning this relocation into one | |
2684 | against a section symbol, so subtract out | |
2685 | the output section's address but not the | |
2686 | offset of the input section in the output | |
2687 | section. */ | |
90ced0dd | 2688 | outrel.r_addend -= osec->vma; |
b5727d75 MS |
2689 | } |
2690 | outrel.r_info = ELF64_R_INFO (sindx, r_type); | |
b5727d75 | 2691 | } |
0451c93c | 2692 | } |
a85d7ed0 | 2693 | |
0451c93c MS |
2694 | sreloc = elf_section_data (input_section)->sreloc; |
2695 | if (sreloc == NULL) | |
2696 | abort (); | |
2697 | ||
947216bf AM |
2698 | loc = sreloc->contents; |
2699 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
2700 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
a85d7ed0 | 2701 | |
947216bf AM |
2702 | /* If this reloc is against an external symbol, we do |
2703 | not want to fiddle with the addend. Otherwise, we | |
2704 | need to include the symbol value so that it becomes | |
2705 | an addend for the dynamic reloc. */ | |
2706 | if (! relocate) | |
2707 | continue; | |
2708 | } | |
a85d7ed0 | 2709 | |
947216bf | 2710 | break; |
a85d7ed0 | 2711 | |
69fc87f1 MS |
2712 | /* Relocations for tls literal pool entries. */ |
2713 | case R_390_TLS_IE64: | |
0e1862bb | 2714 | if (bfd_link_pic (info)) |
69fc87f1 MS |
2715 | { |
2716 | Elf_Internal_Rela outrel; | |
2717 | asection *sreloc; | |
2718 | bfd_byte *loc; | |
2719 | ||
2720 | outrel.r_offset = rel->r_offset | |
2721 | + input_section->output_section->vma | |
2722 | + input_section->output_offset; | |
2723 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); | |
2724 | sreloc = elf_section_data (input_section)->sreloc; | |
2725 | if (sreloc == NULL) | |
2726 | abort (); | |
2727 | loc = sreloc->contents; | |
2728 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
2729 | bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc); | |
2730 | } | |
ae9a127f | 2731 | /* Fall through. */ |
69fc87f1 MS |
2732 | |
2733 | case R_390_TLS_GD64: | |
2734 | case R_390_TLS_GOTIE64: | |
2735 | r_type = elf_s390_tls_transition (info, r_type, h == NULL); | |
2736 | tls_type = GOT_UNKNOWN; | |
2737 | if (h == NULL && local_got_offsets) | |
2738 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
2739 | else if (h != NULL) | |
2740 | { | |
2741 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
0e1862bb | 2742 | if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE) |
69fc87f1 MS |
2743 | r_type = R_390_TLS_LE64; |
2744 | } | |
2745 | if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE) | |
2746 | r_type = R_390_TLS_IE64; | |
2747 | ||
2748 | if (r_type == R_390_TLS_LE64) | |
2749 | { | |
2750 | /* This relocation gets optimized away by the local exec | |
2751 | access optimization. */ | |
2752 | BFD_ASSERT (! unresolved_reloc); | |
2753 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
2754 | contents + rel->r_offset); | |
2755 | continue; | |
2756 | } | |
2757 | ||
f41345a7 | 2758 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2759 | abort (); |
2760 | ||
2761 | if (h != NULL) | |
2762 | off = h->got.offset; | |
2763 | else | |
2764 | { | |
2765 | if (local_got_offsets == NULL) | |
2766 | abort (); | |
2767 | ||
2768 | off = local_got_offsets[r_symndx]; | |
2769 | } | |
2770 | ||
2771 | emit_tls_relocs: | |
2772 | ||
2773 | if ((off & 1) != 0) | |
2774 | off &= ~1; | |
26e41594 | 2775 | else |
69fc87f1 MS |
2776 | { |
2777 | Elf_Internal_Rela outrel; | |
2778 | bfd_byte *loc; | |
2779 | int dr_type, indx; | |
2780 | ||
f41345a7 | 2781 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2782 | abort (); |
2783 | ||
f41345a7 AK |
2784 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2785 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2786 | |
2787 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
2788 | if (r_type == R_390_TLS_GD64) | |
2789 | dr_type = R_390_TLS_DTPMOD; | |
2790 | else | |
2791 | dr_type = R_390_TLS_TPOFF; | |
2792 | if (dr_type == R_390_TLS_TPOFF && indx == 0) | |
2793 | outrel.r_addend = relocation - dtpoff_base (info); | |
2794 | else | |
2795 | outrel.r_addend = 0; | |
2796 | outrel.r_info = ELF64_R_INFO (indx, dr_type); | |
f41345a7 AK |
2797 | loc = htab->elf.srelgot->contents; |
2798 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
2799 | * sizeof (Elf64_External_Rela); |
2800 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2801 | ||
2802 | if (r_type == R_390_TLS_GD64) | |
2803 | { | |
2804 | if (indx == 0) | |
2805 | { | |
07d6d2b8 | 2806 | BFD_ASSERT (! unresolved_reloc); |
69fc87f1 MS |
2807 | bfd_put_64 (output_bfd, |
2808 | relocation - dtpoff_base (info), | |
f41345a7 | 2809 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2810 | } |
2811 | else | |
2812 | { | |
2813 | outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF); | |
2814 | outrel.r_offset += GOT_ENTRY_SIZE; | |
2815 | outrel.r_addend = 0; | |
f41345a7 | 2816 | htab->elf.srelgot->reloc_count++; |
69fc87f1 MS |
2817 | loc += sizeof (Elf64_External_Rela); |
2818 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2819 | } | |
2820 | } | |
2821 | ||
2822 | if (h != NULL) | |
2823 | h->got.offset |= 1; | |
2824 | else | |
2825 | local_got_offsets[r_symndx] |= 1; | |
2826 | } | |
2827 | ||
2828 | if (off >= (bfd_vma) -2) | |
2829 | abort (); | |
2830 | if (r_type == ELF64_R_TYPE (rel->r_info)) | |
2831 | { | |
f41345a7 | 2832 | relocation = htab->elf.sgot->output_offset + off; |
69fc87f1 | 2833 | if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT) |
f41345a7 | 2834 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
2835 | unresolved_reloc = FALSE; |
2836 | } | |
2837 | else | |
2838 | { | |
f41345a7 | 2839 | bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off, |
69fc87f1 MS |
2840 | contents + rel->r_offset); |
2841 | continue; | |
2842 | } | |
2843 | break; | |
2844 | ||
2845 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 2846 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
2847 | case R_390_TLS_IEENT: |
2848 | if (h == NULL) | |
2849 | { | |
2850 | if (local_got_offsets == NULL) | |
2851 | abort(); | |
2852 | off = local_got_offsets[r_symndx]; | |
0e1862bb | 2853 | if (bfd_link_pic (info)) |
69fc87f1 MS |
2854 | goto emit_tls_relocs; |
2855 | } | |
2856 | else | |
2857 | { | |
2858 | off = h->got.offset; | |
2859 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
0e1862bb | 2860 | if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE) |
69fc87f1 MS |
2861 | goto emit_tls_relocs; |
2862 | } | |
2863 | ||
f41345a7 | 2864 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2865 | abort (); |
2866 | ||
2867 | BFD_ASSERT (! unresolved_reloc); | |
2868 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
f41345a7 AK |
2869 | htab->elf.sgot->contents + off); |
2870 | relocation = htab->elf.sgot->output_offset + off; | |
69fc87f1 | 2871 | if (r_type == R_390_TLS_IEENT) |
f41345a7 | 2872 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
2873 | unresolved_reloc = FALSE; |
2874 | break; | |
2875 | ||
2876 | case R_390_TLS_LDM64: | |
0e1862bb | 2877 | if (! bfd_link_pic (info)) |
69fc87f1 MS |
2878 | /* The literal pool entry this relocation refers to gets ignored |
2879 | by the optimized code of the local exec model. Do nothing | |
2880 | and the value will turn out zero. */ | |
2881 | continue; | |
2882 | ||
f41345a7 | 2883 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2884 | abort (); |
2885 | ||
2886 | off = htab->tls_ldm_got.offset; | |
2887 | if (off & 1) | |
2888 | off &= ~1; | |
2889 | else | |
2890 | { | |
2891 | Elf_Internal_Rela outrel; | |
2892 | bfd_byte *loc; | |
2893 | ||
f41345a7 | 2894 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2895 | abort (); |
2896 | ||
f41345a7 AK |
2897 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2898 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2899 | |
2900 | bfd_put_64 (output_bfd, 0, | |
f41345a7 | 2901 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2902 | outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD); |
2903 | outrel.r_addend = 0; | |
f41345a7 AK |
2904 | loc = htab->elf.srelgot->contents; |
2905 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
2906 | * sizeof (Elf64_External_Rela); |
2907 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2908 | htab->tls_ldm_got.offset |= 1; | |
2909 | } | |
f41345a7 | 2910 | relocation = htab->elf.sgot->output_offset + off; |
26e41594 | 2911 | unresolved_reloc = FALSE; |
69fc87f1 MS |
2912 | break; |
2913 | ||
2914 | case R_390_TLS_LE64: | |
3cbc1e5e | 2915 | if (bfd_link_dll (info)) |
69fc87f1 MS |
2916 | { |
2917 | /* Linking a shared library with non-fpic code requires | |
2918 | a R_390_TLS_TPOFF relocation. */ | |
2919 | Elf_Internal_Rela outrel; | |
2920 | asection *sreloc; | |
2921 | bfd_byte *loc; | |
2922 | int indx; | |
2923 | ||
2924 | outrel.r_offset = rel->r_offset | |
2925 | + input_section->output_section->vma | |
2926 | + input_section->output_offset; | |
2927 | if (h != NULL && h->dynindx != -1) | |
2928 | indx = h->dynindx; | |
2929 | else | |
2930 | indx = 0; | |
2931 | outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF); | |
2932 | if (indx == 0) | |
2933 | outrel.r_addend = relocation - dtpoff_base (info); | |
2934 | else | |
2935 | outrel.r_addend = 0; | |
2936 | sreloc = elf_section_data (input_section)->sreloc; | |
2937 | if (sreloc == NULL) | |
2938 | abort (); | |
2939 | loc = sreloc->contents; | |
2940 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
2941 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2942 | } | |
2943 | else | |
2944 | { | |
2945 | BFD_ASSERT (! unresolved_reloc); | |
2946 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
2947 | contents + rel->r_offset); | |
2948 | } | |
2949 | continue; | |
2950 | ||
2951 | case R_390_TLS_LDO64: | |
0e1862bb | 2952 | if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING)) |
69fc87f1 MS |
2953 | relocation -= dtpoff_base (info); |
2954 | else | |
2955 | /* When converting LDO to LE, we must negate. */ | |
2956 | relocation = -tpoff (info, relocation); | |
2957 | break; | |
2958 | ||
2959 | /* Relocations for tls instructions. */ | |
2960 | case R_390_TLS_LOAD: | |
2961 | case R_390_TLS_GDCALL: | |
2962 | case R_390_TLS_LDCALL: | |
2963 | tls_type = GOT_UNKNOWN; | |
2964 | if (h == NULL && local_got_offsets) | |
2965 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
2966 | else if (h != NULL) | |
2967 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
2968 | ||
2969 | if (tls_type == GOT_TLS_GD) | |
2970 | continue; | |
2971 | ||
2972 | if (r_type == R_390_TLS_LOAD) | |
2973 | { | |
0e1862bb | 2974 | if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) |
69fc87f1 MS |
2975 | { |
2976 | /* IE->LE transition. Four valid cases: | |
2977 | lg %rx,(0,%ry) -> sllg %rx,%ry,0 | |
2978 | lg %rx,(%ry,0) -> sllg %rx,%ry,0 | |
2979 | lg %rx,(%ry,%r12) -> sllg %rx,%ry,0 | |
2980 | lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */ | |
2981 | unsigned int insn0, insn1, ry; | |
2982 | ||
2983 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
2984 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
2985 | if (insn1 != 0x0004) | |
3704e358 AK |
2986 | { |
2987 | invalid_tls_insn (input_bfd, input_section, rel); | |
2988 | return FALSE; | |
2989 | } | |
69fc87f1 MS |
2990 | if ((insn0 & 0xff00f000) == 0xe3000000) |
2991 | /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */ | |
2992 | ry = (insn0 & 0x000f0000); | |
2993 | else if ((insn0 & 0xff0f0000) == 0xe3000000) | |
2994 | /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */ | |
2995 | ry = (insn0 & 0x0000f000) << 4; | |
2996 | else if ((insn0 & 0xff00f000) == 0xe300c000) | |
2997 | /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */ | |
2998 | ry = (insn0 & 0x000f0000); | |
2999 | else if ((insn0 & 0xff0f0000) == 0xe30c0000) | |
3000 | /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */ | |
3001 | ry = (insn0 & 0x0000f000) << 4; | |
3002 | else | |
3704e358 AK |
3003 | { |
3004 | invalid_tls_insn (input_bfd, input_section, rel); | |
3005 | return FALSE; | |
3006 | } | |
69fc87f1 MS |
3007 | insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry; |
3008 | insn1 = 0x000d; | |
3009 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
3010 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
3011 | } | |
3012 | } | |
3013 | else if (r_type == R_390_TLS_GDCALL) | |
3014 | { | |
3015 | unsigned int insn0, insn1; | |
3016 | ||
3017 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3018 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
3019 | if ((insn0 & 0xffff0000) != 0xc0e50000) | |
3704e358 AK |
3020 | { |
3021 | invalid_tls_insn (input_bfd, input_section, rel); | |
3022 | return FALSE; | |
3023 | } | |
0e1862bb | 3024 | if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) |
69fc87f1 MS |
3025 | { |
3026 | /* GD->LE transition. | |
3027 | brasl %r14,__tls_get_addr@plt -> brcl 0,. */ | |
3028 | insn0 = 0xc0040000; | |
3029 | insn1 = 0x0000; | |
3030 | } | |
3031 | else | |
3032 | { | |
3033 | /* GD->IE transition. | |
3034 | brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */ | |
3035 | insn0 = 0xe322c000; | |
3036 | insn1 = 0x0004; | |
3037 | } | |
3038 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
3039 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
3040 | } | |
3041 | else if (r_type == R_390_TLS_LDCALL) | |
3042 | { | |
0e1862bb | 3043 | if (!bfd_link_pic (info)) |
69fc87f1 MS |
3044 | { |
3045 | unsigned int insn0, insn1; | |
3046 | ||
3047 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3048 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
3049 | if ((insn0 & 0xffff0000) != 0xc0e50000) | |
3704e358 AK |
3050 | { |
3051 | invalid_tls_insn (input_bfd, input_section, rel); | |
3052 | return FALSE; | |
3053 | } | |
69fc87f1 MS |
3054 | /* LD->LE transition. |
3055 | brasl %r14,__tls_get_addr@plt -> brcl 0,. */ | |
3056 | insn0 = 0xc0040000; | |
3057 | insn1 = 0x0000; | |
3058 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
3059 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
3060 | } | |
3061 | } | |
3062 | continue; | |
3063 | ||
947216bf AM |
3064 | default: |
3065 | break; | |
3066 | } | |
a85d7ed0 | 3067 | |
239e1f3a AM |
3068 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3069 | because such sections are not SEC_ALLOC and thus ld.so will | |
3070 | not process them. */ | |
0451c93c | 3071 | if (unresolved_reloc |
239e1f3a | 3072 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
3073 | && h->def_dynamic) |
3074 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
3075 | rel->r_offset) != (bfd_vma) -1) | |
4eca0228 | 3076 | _bfd_error_handler |
695344c0 | 3077 | /* xgettext:c-format */ |
2dcf00ce AM |
3078 | (_("%pB(%pA+%#" PRIx64 "): " |
3079 | "unresolvable %s relocation against symbol `%s'"), | |
d003868e AM |
3080 | input_bfd, |
3081 | input_section, | |
2dcf00ce | 3082 | (uint64_t) rel->r_offset, |
843fe662 | 3083 | howto->name, |
0451c93c MS |
3084 | h->root.root.string); |
3085 | ||
470b557a AK |
3086 | do_relocation: |
3087 | ||
fb798c50 AK |
3088 | /* When applying a 24 bit reloc we need to start one byte |
3089 | earlier. Otherwise the 32 bit get/put bfd operations might | |
3090 | access a byte after the actual section. */ | |
3091 | if (r_type == R_390_PC24DBL | |
3092 | || r_type == R_390_PLT24DBL) | |
3093 | rel->r_offset--; | |
3094 | ||
bd1ea41b MS |
3095 | if (r_type == R_390_20 |
3096 | || r_type == R_390_GOT20 | |
3097 | || r_type == R_390_GOTPLT20 | |
3098 | || r_type == R_390_TLS_GOTIE20) | |
3099 | { | |
3100 | relocation += rel->r_addend; | |
3101 | relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12; | |
3102 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3103 | contents, rel->r_offset, | |
3104 | relocation, 0); | |
3105 | } | |
3106 | else | |
3107 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
a85d7ed0 NC |
3108 | contents, rel->r_offset, |
3109 | relocation, rel->r_addend); | |
3110 | ||
3111 | if (r != bfd_reloc_ok) | |
3112 | { | |
0451c93c | 3113 | const char *name; |
ec338859 | 3114 | |
0451c93c MS |
3115 | if (h != NULL) |
3116 | name = h->root.root.string; | |
3117 | else | |
a85d7ed0 | 3118 | { |
0451c93c MS |
3119 | name = bfd_elf_string_from_elf_section (input_bfd, |
3120 | symtab_hdr->sh_link, | |
3121 | sym->st_name); | |
3122 | if (name == NULL) | |
b34976b6 | 3123 | return FALSE; |
0451c93c | 3124 | if (*name == '\0') |
fd361982 | 3125 | name = bfd_section_name (sec); |
0451c93c | 3126 | } |
ec338859 | 3127 | |
0451c93c | 3128 | if (r == bfd_reloc_overflow) |
1a72702b AM |
3129 | (*info->callbacks->reloc_overflow) |
3130 | (info, (h ? &h->root : NULL), name, howto->name, | |
3131 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
0451c93c MS |
3132 | else |
3133 | { | |
4eca0228 | 3134 | _bfd_error_handler |
695344c0 | 3135 | /* xgettext:c-format */ |
2dcf00ce | 3136 | (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"), |
d003868e | 3137 | input_bfd, input_section, |
2dcf00ce | 3138 | (uint64_t) rel->r_offset, name, (int) r); |
b34976b6 | 3139 | return FALSE; |
a85d7ed0 NC |
3140 | } |
3141 | } | |
3142 | } | |
3143 | ||
b34976b6 | 3144 | return TRUE; |
a85d7ed0 NC |
3145 | } |
3146 | ||
470b557a AK |
3147 | /* Generate the PLT slots together with the dynamic relocations needed |
3148 | for IFUNC symbols. */ | |
3149 | ||
3150 | static void | |
3151 | elf_s390_finish_ifunc_symbol (bfd *output_bfd, | |
3152 | struct bfd_link_info *info, | |
3153 | struct elf_link_hash_entry *h, | |
3154 | struct elf_s390_link_hash_table *htab, | |
3155 | bfd_vma plt_offset, | |
3156 | bfd_vma resolver_address) | |
3157 | { | |
3158 | bfd_vma plt_index; | |
3159 | bfd_vma got_offset; | |
3160 | Elf_Internal_Rela rela; | |
3161 | bfd_byte *loc; | |
3162 | asection *plt, *gotplt, *relplt; | |
3163 | ||
3164 | if (htab->elf.iplt == NULL | |
3165 | || htab->elf.igotplt == NULL | |
3166 | || htab->elf.irelplt == NULL) | |
3167 | abort (); | |
3168 | ||
3169 | /* Index of the PLT slot within iplt section. */ | |
3170 | plt_index = plt_offset / PLT_ENTRY_SIZE; | |
3171 | plt = htab->elf.iplt; | |
3172 | /* Offset into the igot.plt section. */ | |
3173 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
3174 | gotplt = htab->elf.igotplt; | |
3175 | relplt = htab->elf.irelplt; | |
3176 | ||
3177 | /* Fill in the blueprint of a PLT. */ | |
3178 | memcpy (plt->contents + plt_offset, elf_s390x_plt_entry, | |
3179 | PLT_ENTRY_SIZE); | |
3180 | ||
3181 | /* Fixup the relative address to the GOT entry */ | |
3182 | bfd_put_32 (output_bfd, | |
3183 | (gotplt->output_section->vma + | |
3184 | gotplt->output_offset + got_offset | |
3185 | - (plt->output_section->vma + | |
3186 | plt->output_offset + | |
3187 | plt_offset))/2, | |
3188 | plt->contents + plt_offset + 2); | |
3189 | /* Fixup the relative branch to PLT 0 */ | |
3190 | bfd_put_32 (output_bfd, - (plt->output_offset + | |
3191 | (PLT_ENTRY_SIZE * plt_index) + 22)/2, | |
3192 | plt->contents + plt_offset + 24); | |
3193 | /* Fixup offset into .rela.plt section. */ | |
3194 | bfd_put_32 (output_bfd, relplt->output_offset + | |
3195 | plt_index * sizeof (Elf64_External_Rela), | |
3196 | plt->contents + plt_offset + 28); | |
3197 | ||
3198 | /* Fill in the entry in the global offset table. | |
3199 | Points to instruction after GOT offset. */ | |
3200 | bfd_put_64 (output_bfd, | |
3201 | (plt->output_section->vma | |
3202 | + plt->output_offset | |
3203 | + plt_offset | |
3204 | + 14), | |
3205 | gotplt->contents + got_offset); | |
3206 | ||
3207 | /* Fill in the entry in the .rela.plt section. */ | |
3208 | rela.r_offset = (gotplt->output_section->vma | |
3209 | + gotplt->output_offset | |
3210 | + got_offset); | |
3211 | ||
3212 | if (!h | |
3213 | || h->dynindx == -1 | |
0e1862bb | 3214 | || ((bfd_link_executable (info) |
470b557a AK |
3215 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
3216 | && h->def_regular)) | |
3217 | { | |
3218 | /* The symbol can be locally resolved. */ | |
3219 | rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE); | |
3220 | rela.r_addend = resolver_address; | |
3221 | } | |
3222 | else | |
3223 | { | |
3224 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3225 | rela.r_addend = 0; | |
3226 | } | |
3227 | ||
3228 | loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela); | |
3229 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
3230 | } | |
3231 | ||
3232 | ||
a85d7ed0 NC |
3233 | /* Finish up dynamic symbol handling. We set the contents of various |
3234 | dynamic sections here. */ | |
3235 | ||
b34976b6 | 3236 | static bfd_boolean |
4dfe6ac6 NC |
3237 | elf_s390_finish_dynamic_symbol (bfd *output_bfd, |
3238 | struct bfd_link_info *info, | |
3239 | struct elf_link_hash_entry *h, | |
3240 | Elf_Internal_Sym *sym) | |
a85d7ed0 | 3241 | { |
0451c93c | 3242 | struct elf_s390_link_hash_table *htab; |
470b557a | 3243 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h; |
a85d7ed0 | 3244 | |
0451c93c | 3245 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
3246 | if (htab == NULL) |
3247 | return FALSE; | |
a85d7ed0 NC |
3248 | |
3249 | if (h->plt.offset != (bfd_vma) -1) | |
3250 | { | |
a85d7ed0 | 3251 | bfd_vma plt_index; |
afca762f | 3252 | bfd_vma gotplt_offset; |
0451c93c | 3253 | Elf_Internal_Rela rela; |
947216bf | 3254 | bfd_byte *loc; |
a85d7ed0 NC |
3255 | |
3256 | /* This symbol has an entry in the procedure linkage table. Set | |
947216bf | 3257 | it up. */ |
0a511368 | 3258 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) |
470b557a | 3259 | { |
0a511368 AK |
3260 | elf_s390_finish_ifunc_symbol (output_bfd, info, h, |
3261 | htab, h->plt.offset, | |
3262 | eh->ifunc_resolver_address + | |
3263 | eh->ifunc_resolver_section->output_offset + | |
3264 | eh->ifunc_resolver_section->output_section->vma); | |
3265 | ||
3266 | /* Do not return yet. Handling of explicit GOT slots of | |
3267 | IFUNC symbols is below. */ | |
470b557a AK |
3268 | } |
3269 | else | |
3270 | { | |
3271 | if (h->dynindx == -1 | |
3272 | || htab->elf.splt == NULL | |
3273 | || htab->elf.sgotplt == NULL | |
3274 | || htab->elf.srelplt == NULL) | |
3275 | abort (); | |
a85d7ed0 | 3276 | |
470b557a AK |
3277 | /* Calc. index no. |
3278 | Current offset - size first entry / entry size. */ | |
3279 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
a85d7ed0 | 3280 | |
afca762f AK |
3281 | /* The slots in the .got.plt correspond to the PLT slots in |
3282 | the same order. */ | |
3283 | gotplt_offset = plt_index * GOT_ENTRY_SIZE; | |
3284 | ||
3285 | /* If .got.plt comes first it needs to contain the 3 header | |
3286 | entries. */ | |
3287 | if (!s390_gotplt_after_got_p (info)) | |
3288 | gotplt_offset += 3 * GOT_ENTRY_SIZE; | |
a85d7ed0 | 3289 | |
470b557a AK |
3290 | /* Fill in the blueprint of a PLT. */ |
3291 | memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry, | |
3292 | PLT_ENTRY_SIZE); | |
3293 | ||
afca762f AK |
3294 | /* The first instruction in the PLT entry is a LARL loading |
3295 | the address of the GOT slot. We write the 4 byte | |
3296 | immediate operand of the LARL instruction here. */ | |
470b557a AK |
3297 | bfd_put_32 (output_bfd, |
3298 | (htab->elf.sgotplt->output_section->vma + | |
afca762f | 3299 | htab->elf.sgotplt->output_offset + gotplt_offset |
470b557a AK |
3300 | - (htab->elf.splt->output_section->vma + |
3301 | htab->elf.splt->output_offset + | |
3302 | h->plt.offset))/2, | |
3303 | htab->elf.splt->contents + h->plt.offset + 2); | |
3304 | /* Fixup the relative branch to PLT 0 */ | |
3305 | bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE + | |
3306 | (PLT_ENTRY_SIZE * plt_index) + 22)/2, | |
3307 | htab->elf.splt->contents + h->plt.offset + 24); | |
3308 | /* Fixup offset into .rela.plt section. */ | |
3309 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela), | |
3310 | htab->elf.splt->contents + h->plt.offset + 28); | |
3311 | ||
3312 | /* Fill in the entry in the global offset table. | |
3313 | Points to instruction after GOT offset. */ | |
3314 | bfd_put_64 (output_bfd, | |
3315 | (htab->elf.splt->output_section->vma | |
3316 | + htab->elf.splt->output_offset | |
3317 | + h->plt.offset | |
3318 | + 14), | |
afca762f | 3319 | htab->elf.sgotplt->contents + gotplt_offset); |
470b557a AK |
3320 | |
3321 | /* Fill in the entry in the .rela.plt section. */ | |
3322 | rela.r_offset = (htab->elf.sgotplt->output_section->vma | |
3323 | + htab->elf.sgotplt->output_offset | |
afca762f | 3324 | + gotplt_offset); |
470b557a AK |
3325 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT); |
3326 | rela.r_addend = 0; | |
3327 | loc = htab->elf.srelplt->contents + plt_index * | |
3328 | sizeof (Elf64_External_Rela); | |
3329 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
3330 | ||
3331 | if (!h->def_regular) | |
3332 | { | |
3333 | /* Mark the symbol as undefined, rather than as defined in | |
3334 | the .plt section. Leave the value alone. This is a clue | |
3335 | for the dynamic linker, to make function pointer | |
3336 | comparisons work between an application and shared | |
3337 | library. */ | |
3338 | sym->st_shndx = SHN_UNDEF; | |
3339 | } | |
a85d7ed0 NC |
3340 | } |
3341 | } | |
3342 | ||
69fc87f1 MS |
3343 | if (h->got.offset != (bfd_vma) -1 |
3344 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD | |
3345 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE | |
3346 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT) | |
a85d7ed0 | 3347 | { |
a85d7ed0 | 3348 | Elf_Internal_Rela rela; |
947216bf | 3349 | bfd_byte *loc; |
a85d7ed0 NC |
3350 | |
3351 | /* This symbol has an entry in the global offset table. Set it | |
947216bf | 3352 | up. */ |
f41345a7 | 3353 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
0451c93c | 3354 | abort (); |
a85d7ed0 | 3355 | |
f41345a7 AK |
3356 | rela.r_offset = (htab->elf.sgot->output_section->vma |
3357 | + htab->elf.sgot->output_offset | |
dc810e39 | 3358 | + (h->got.offset &~ (bfd_vma) 1)); |
a85d7ed0 | 3359 | |
470b557a AK |
3360 | if (h->def_regular && s390_is_ifunc_symbol_p (h)) |
3361 | { | |
0e1862bb | 3362 | if (bfd_link_pic (info)) |
470b557a AK |
3363 | { |
3364 | /* An explicit GOT slot usage needs GLOB_DAT. If the | |
3365 | symbol references local the implicit got.iplt slot | |
3366 | will be used and the IRELATIVE reloc has been created | |
3367 | above. */ | |
3368 | goto do_glob_dat; | |
3369 | } | |
3370 | else | |
3371 | { | |
3372 | /* For non-shared objects explicit GOT slots must be | |
3373 | filled with the PLT slot address for pointer | |
3374 | equality reasons. */ | |
3375 | bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma | |
3376 | + htab->elf.iplt->output_offset | |
3377 | + h->plt.offset), | |
3378 | htab->elf.sgot->contents + h->got.offset); | |
3379 | return TRUE; | |
3380 | } | |
3381 | } | |
0e1862bb | 3382 | else if (bfd_link_pic (info) |
ceada896 | 3383 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
947216bf | 3384 | { |
10e7c045 AK |
3385 | if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
3386 | return TRUE; | |
3387 | ||
470b557a AK |
3388 | /* If this is a static link, or it is a -Bsymbolic link and |
3389 | the symbol is defined locally or was forced to be local | |
3390 | because of a version file, we just want to emit a | |
3391 | RELATIVE reloc. The entry in the global offset table | |
3392 | will already have been initialized in the | |
3393 | relocate_section function. */ | |
8170f769 | 3394 | if (!(h->def_regular || ELF_COMMON_DEF_P (h))) |
8c21ca21 | 3395 | return FALSE; |
0451c93c | 3396 | BFD_ASSERT((h->got.offset & 1) != 0); |
947216bf AM |
3397 | rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE); |
3398 | rela.r_addend = (h->root.u.def.value | |
3399 | + h->root.u.def.section->output_section->vma | |
3400 | + h->root.u.def.section->output_offset); | |
3401 | } | |
a85d7ed0 NC |
3402 | else |
3403 | { | |
3404 | BFD_ASSERT((h->got.offset & 1) == 0); | |
ceada896 | 3405 | do_glob_dat: |
f41345a7 | 3406 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset); |
a85d7ed0 | 3407 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT); |
947216bf AM |
3408 | rela.r_addend = 0; |
3409 | } | |
a85d7ed0 | 3410 | |
f41345a7 AK |
3411 | loc = htab->elf.srelgot->contents; |
3412 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela); | |
0451c93c | 3413 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3414 | } |
3415 | ||
f5385ebf | 3416 | if (h->needs_copy) |
a85d7ed0 | 3417 | { |
a85d7ed0 | 3418 | Elf_Internal_Rela rela; |
5474d94f | 3419 | asection *s; |
947216bf | 3420 | bfd_byte *loc; |
a85d7ed0 NC |
3421 | |
3422 | /* This symbols needs a copy reloc. Set it up. */ | |
3423 | ||
0451c93c MS |
3424 | if (h->dynindx == -1 |
3425 | || (h->root.type != bfd_link_hash_defined | |
3426 | && h->root.type != bfd_link_hash_defweak) | |
9d19e4fd | 3427 | || htab->elf.srelbss == NULL) |
0451c93c | 3428 | abort (); |
a85d7ed0 NC |
3429 | |
3430 | rela.r_offset = (h->root.u.def.value | |
3431 | + h->root.u.def.section->output_section->vma | |
3432 | + h->root.u.def.section->output_offset); | |
3433 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY); | |
3434 | rela.r_addend = 0; | |
afbf7e8e | 3435 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
3436 | s = htab->elf.sreldynrelro; |
3437 | else | |
3438 | s = htab->elf.srelbss; | |
3439 | loc = s->contents + s->reloc_count++ * sizeof (Elf64_External_Rela); | |
0451c93c | 3440 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3441 | } |
3442 | ||
3443 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 3444 | if (h == htab->elf.hdynamic |
22edb2f1 RS |
3445 | || h == htab->elf.hgot |
3446 | || h == htab->elf.hplt) | |
a85d7ed0 NC |
3447 | sym->st_shndx = SHN_ABS; |
3448 | ||
b34976b6 | 3449 | return TRUE; |
a85d7ed0 NC |
3450 | } |
3451 | ||
0451c93c MS |
3452 | /* Used to decide how to sort relocs in an optimal manner for the |
3453 | dynamic linker, before writing them out. */ | |
3454 | ||
3455 | static enum elf_reloc_type_class | |
7e612e98 AM |
3456 | elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
3457 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
3458 | const Elf_Internal_Rela *rela) | |
0451c93c | 3459 | { |
0f042c67 AK |
3460 | bfd *abfd = info->output_bfd; |
3461 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3462 | struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info); | |
3463 | unsigned long r_symndx = ELF64_R_SYM (rela->r_info); | |
3464 | Elf_Internal_Sym sym; | |
3465 | ||
3466 | if (htab->elf.dynsym == NULL | |
3467 | || !bed->s->swap_symbol_in (abfd, | |
3468 | (htab->elf.dynsym->contents | |
3469 | + r_symndx * bed->s->sizeof_sym), | |
3470 | 0, &sym)) | |
3471 | abort (); | |
3472 | ||
3473 | /* Check relocation against STT_GNU_IFUNC symbol. */ | |
3474 | if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
3475 | return reloc_class_ifunc; | |
3476 | ||
0451c93c MS |
3477 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
3478 | { | |
3479 | case R_390_RELATIVE: | |
3480 | return reloc_class_relative; | |
3481 | case R_390_JMP_SLOT: | |
3482 | return reloc_class_plt; | |
3483 | case R_390_COPY: | |
3484 | return reloc_class_copy; | |
3485 | default: | |
3486 | return reloc_class_normal; | |
3487 | } | |
3488 | } | |
3489 | ||
a85d7ed0 NC |
3490 | /* Finish up the dynamic sections. */ |
3491 | ||
b34976b6 | 3492 | static bfd_boolean |
4dfe6ac6 NC |
3493 | elf_s390_finish_dynamic_sections (bfd *output_bfd, |
3494 | struct bfd_link_info *info) | |
a85d7ed0 | 3495 | { |
0451c93c | 3496 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
3497 | bfd *dynobj; |
3498 | asection *sdyn; | |
470b557a AK |
3499 | bfd *ibfd; |
3500 | unsigned int i; | |
a85d7ed0 | 3501 | |
0451c93c | 3502 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
3503 | if (htab == NULL) |
3504 | return FALSE; | |
3505 | ||
0451c93c | 3506 | dynobj = htab->elf.dynobj; |
3d4d4302 | 3507 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
a85d7ed0 | 3508 | |
0451c93c | 3509 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 | 3510 | { |
a85d7ed0 NC |
3511 | Elf64_External_Dyn *dyncon, *dynconend; |
3512 | ||
f41345a7 | 3513 | if (sdyn == NULL || htab->elf.sgot == NULL) |
0451c93c | 3514 | abort (); |
a85d7ed0 NC |
3515 | |
3516 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 3517 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
a85d7ed0 NC |
3518 | for (; dyncon < dynconend; dyncon++) |
3519 | { | |
3520 | Elf_Internal_Dyn dyn; | |
a85d7ed0 | 3521 | asection *s; |
ec338859 | 3522 | |
a85d7ed0 | 3523 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); |
ec338859 | 3524 | |
a85d7ed0 NC |
3525 | switch (dyn.d_tag) |
3526 | { | |
3527 | default: | |
0451c93c | 3528 | continue; |
ec338859 | 3529 | |
a85d7ed0 | 3530 | case DT_PLTGOT: |
afca762f AK |
3531 | /* DT_PLTGOT matches _GLOBAL_OFFSET_TABLE_ */ |
3532 | dyn.d_un.d_ptr = s390_got_pointer (info); | |
0451c93c | 3533 | break; |
ec338859 | 3534 | |
a85d7ed0 | 3535 | case DT_JMPREL: |
4ade44b7 AM |
3536 | s = htab->elf.srelplt; |
3537 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
a85d7ed0 | 3538 | break; |
ec338859 | 3539 | |
a85d7ed0 | 3540 | case DT_PLTRELSZ: |
79c12fae AK |
3541 | dyn.d_un.d_val = htab->elf.srelplt->size; |
3542 | if (htab->elf.irelplt) | |
3543 | dyn.d_un.d_val += htab->elf.irelplt->size; | |
a85d7ed0 | 3544 | break; |
ec338859 | 3545 | |
a85d7ed0 NC |
3546 | case DT_RELASZ: |
3547 | /* The procedure linkage table relocs (DT_JMPREL) should | |
3548 | not be included in the overall relocs (DT_RELA). | |
3549 | Therefore, we override the DT_RELASZ entry here to | |
3550 | make it not include the JMPREL relocs. Since the | |
3551 | linker script arranges for .rela.plt to follow all | |
3552 | other relocation sections, we don't have to worry | |
3553 | about changing the DT_RELA entry. */ | |
79c12fae AK |
3554 | dyn.d_un.d_val -= htab->elf.srelplt->size; |
3555 | if (htab->elf.irelplt) | |
3556 | dyn.d_un.d_val -= htab->elf.irelplt->size; | |
a85d7ed0 NC |
3557 | break; |
3558 | } | |
0451c93c MS |
3559 | |
3560 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
a85d7ed0 NC |
3561 | } |
3562 | ||
3563 | /* Fill in the special first entry in the procedure linkage table. */ | |
f41345a7 | 3564 | if (htab->elf.splt && htab->elf.splt->size > 0) |
a85d7ed0 NC |
3565 | { |
3566 | /* fill in blueprint for plt 0 entry */ | |
f41345a7 | 3567 | memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry, |
9aa17453 | 3568 | PLT_FIRST_ENTRY_SIZE); |
afca762f AK |
3569 | /* The second instruction in the first PLT entry is a LARL |
3570 | loading the GOT pointer. Fill in the LARL immediate | |
3571 | address. */ | |
a85d7ed0 | 3572 | bfd_put_32 (output_bfd, |
afca762f | 3573 | (s390_got_pointer (info) |
161db279 AK |
3574 | - htab->elf.splt->output_section->vma |
3575 | - htab->elf.splt->output_offset - 6)/2, | |
f41345a7 | 3576 | htab->elf.splt->contents + 8); |
a85d7ed0 | 3577 | } |
387f8054 MR |
3578 | if (elf_section_data (htab->elf.splt->output_section) != NULL) |
3579 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize | |
3580 | = PLT_ENTRY_SIZE; | |
a85d7ed0 NC |
3581 | } |
3582 | ||
afca762f | 3583 | if (htab->elf.hgot && htab->elf.hgot->root.u.def.section) |
a85d7ed0 | 3584 | { |
0451c93c | 3585 | /* Fill in the first three entries in the global offset table. */ |
afca762f | 3586 | if (htab->elf.hgot->root.u.def.section->size > 0) |
0451c93c MS |
3587 | { |
3588 | bfd_put_64 (output_bfd, | |
3589 | (sdyn == NULL ? (bfd_vma) 0 | |
3590 | : sdyn->output_section->vma + sdyn->output_offset), | |
afca762f | 3591 | htab->elf.hgot->root.u.def.section->contents); |
0451c93c | 3592 | /* One entry for shared object struct ptr. */ |
afca762f AK |
3593 | bfd_put_64 (output_bfd, (bfd_vma) 0, |
3594 | htab->elf.hgot->root.u.def.section->contents + 8); | |
0451c93c | 3595 | /* One entry for _dl_runtime_resolve. */ |
afca762f AK |
3596 | bfd_put_64 (output_bfd, (bfd_vma) 0, |
3597 | htab->elf.hgot->root.u.def.section->contents + 16); | |
0451c93c | 3598 | } |
f41345a7 | 3599 | elf_section_data (htab->elf.sgot->output_section) |
0451c93c MS |
3600 | ->this_hdr.sh_entsize = 8; |
3601 | } | |
470b557a AK |
3602 | |
3603 | /* Finish dynamic symbol for local IFUNC symbols. */ | |
c72f2fb2 | 3604 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
470b557a AK |
3605 | { |
3606 | struct plt_entry *local_plt; | |
3607 | Elf_Internal_Sym *isym; | |
3608 | Elf_Internal_Shdr *symtab_hdr; | |
3609 | ||
3610 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
3611 | ||
1ef692ea AK |
3612 | if (!is_s390_elf (ibfd)) |
3613 | continue; | |
3614 | ||
470b557a AK |
3615 | local_plt = elf_s390_local_plt (ibfd); |
3616 | if (local_plt != NULL) | |
3617 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
3618 | { | |
3619 | if (local_plt[i].plt.offset != (bfd_vma) -1) | |
3620 | { | |
3621 | asection *sec = local_plt[i].sec; | |
3622 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i); | |
3623 | if (isym == NULL) | |
3624 | return FALSE; | |
3625 | ||
3626 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
3627 | elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab, | |
3628 | local_plt[i].plt.offset, | |
3629 | isym->st_value | |
3630 | + sec->output_section->vma | |
3631 | + sec->output_offset); | |
3632 | ||
3633 | } | |
3634 | } | |
3635 | } | |
3636 | ||
b34976b6 | 3637 | return TRUE; |
a85d7ed0 | 3638 | } |
e3e9290d AA |
3639 | \f |
3640 | /* Support for core dump NOTE sections. */ | |
a85d7ed0 | 3641 | |
e3e9290d AA |
3642 | static bfd_boolean |
3643 | elf_s390_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
3644 | { | |
3645 | int offset; | |
3646 | size_t size; | |
3647 | ||
3648 | switch (note->descsz) | |
3649 | { | |
3650 | default: | |
3651 | return FALSE; | |
3652 | ||
3653 | case 336: /* sizeof(struct elf_prstatus) on s390x */ | |
3654 | /* pr_cursig */ | |
3655 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
3656 | ||
3657 | /* pr_pid */ | |
3658 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); | |
3659 | ||
3660 | /* pr_reg */ | |
3661 | offset = 112; | |
3662 | size = 216; | |
3663 | break; | |
3664 | } | |
3665 | ||
3666 | /* Make a ".reg/999" section. */ | |
3667 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
3668 | size, note->descpos + offset); | |
3669 | } | |
3670 | ||
3671 | static bfd_boolean | |
3672 | elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
3673 | { | |
3674 | switch (note->descsz) | |
3675 | { | |
3676 | default: | |
3677 | return FALSE; | |
3678 | ||
3679 | case 136: /* sizeof(struct elf_prpsinfo) on s390x */ | |
3680 | elf_tdata (abfd)->core->pid | |
3681 | = bfd_get_32 (abfd, note->descdata + 24); | |
3682 | elf_tdata (abfd)->core->program | |
3683 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
3684 | elf_tdata (abfd)->core->command | |
3685 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
3686 | } | |
3687 | ||
3688 | /* Note that for some reason, a spurious space is tacked | |
3689 | onto the end of the args in some (at least one anyway) | |
3690 | implementations, so strip it off if it exists. */ | |
3691 | ||
3692 | { | |
3693 | char *command = elf_tdata (abfd)->core->command; | |
3694 | int n = strlen (command); | |
3695 | ||
3696 | if (0 < n && command[n - 1] == ' ') | |
3697 | command[n - 1] = '\0'; | |
3698 | } | |
3699 | ||
3700 | return TRUE; | |
3701 | } | |
3702 | ||
3703 | static char * | |
3704 | elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz, | |
3705 | int note_type, ...) | |
3706 | { | |
3707 | va_list ap; | |
3708 | ||
3709 | switch (note_type) | |
3710 | { | |
3711 | default: | |
3712 | return NULL; | |
3713 | ||
3714 | case NT_PRPSINFO: | |
3715 | { | |
602f1657 | 3716 | char data[136] ATTRIBUTE_NONSTRING = { 0 }; |
e3e9290d AA |
3717 | const char *fname, *psargs; |
3718 | ||
3719 | va_start (ap, note_type); | |
3720 | fname = va_arg (ap, const char *); | |
3721 | psargs = va_arg (ap, const char *); | |
3722 | va_end (ap); | |
3723 | ||
3724 | strncpy (data + 40, fname, 16); | |
898ade12 | 3725 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 3726 | DIAGNOSTIC_PUSH; |
be3e27bb | 3727 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
3728 | -Wstringop-truncation: |
3729 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
3730 | */ | |
95da9854 L |
3731 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
3732 | #endif | |
e3e9290d | 3733 | strncpy (data + 56, psargs, 80); |
898ade12 | 3734 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 3735 | DIAGNOSTIC_POP; |
fe75810f | 3736 | #endif |
e3e9290d AA |
3737 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, |
3738 | &data, sizeof (data)); | |
3739 | } | |
3740 | ||
3741 | case NT_PRSTATUS: | |
3742 | { | |
3743 | char data[336] = { 0 }; | |
3744 | long pid; | |
3745 | int cursig; | |
3746 | const void *gregs; | |
3747 | ||
3748 | va_start (ap, note_type); | |
3749 | pid = va_arg (ap, long); | |
3750 | cursig = va_arg (ap, int); | |
3751 | gregs = va_arg (ap, const void *); | |
3752 | va_end (ap); | |
3753 | ||
3754 | bfd_put_16 (abfd, cursig, data + 12); | |
3755 | bfd_put_32 (abfd, pid, data + 32); | |
3756 | memcpy (data + 112, gregs, 216); | |
3757 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, | |
3758 | &data, sizeof (data)); | |
3759 | } | |
3760 | } | |
3761 | /* NOTREACHED */ | |
3762 | } | |
3763 | \f | |
4c45e5c9 JJ |
3764 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
3765 | or (bfd_vma) -1 if it should not be included. */ | |
3766 | ||
3767 | static bfd_vma | |
3768 | elf_s390_plt_sym_val (bfd_vma i, const asection *plt, | |
3769 | const arelent *rel ATTRIBUTE_UNUSED) | |
3770 | { | |
3771 | return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE; | |
3772 | } | |
3773 | ||
643f7afb AK |
3774 | /* Merge backend specific data from an object file to the output |
3775 | object file when linking. */ | |
3776 | ||
3777 | static bfd_boolean | |
50e03d47 | 3778 | elf64_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
643f7afb | 3779 | { |
50e03d47 | 3780 | if (!is_s390_elf (ibfd) || !is_s390_elf (info->output_bfd)) |
643f7afb AK |
3781 | return TRUE; |
3782 | ||
50e03d47 | 3783 | return elf_s390_merge_obj_attributes (ibfd, info); |
643f7afb AK |
3784 | } |
3785 | ||
b4cbbe8f AK |
3786 | /* We may add a PT_S390_PGSTE program header. */ |
3787 | ||
3788 | static int | |
3789 | elf_s390_additional_program_headers (bfd *abfd ATTRIBUTE_UNUSED, | |
3790 | struct bfd_link_info *info) | |
3791 | { | |
3792 | struct elf_s390_link_hash_table *htab; | |
3793 | ||
93ec5e23 AK |
3794 | if (info) |
3795 | { | |
3796 | htab = elf_s390_hash_table (info); | |
3797 | if (htab) | |
3798 | return htab->params->pgste; | |
3799 | } | |
3800 | return 0; | |
b4cbbe8f AK |
3801 | } |
3802 | ||
3803 | ||
3804 | /* Add the PT_S390_PGSTE program header. */ | |
3805 | ||
3806 | static bfd_boolean | |
93ec5e23 | 3807 | elf_s390_modify_segment_map (bfd *abfd, struct bfd_link_info *info) |
b4cbbe8f AK |
3808 | { |
3809 | struct elf_s390_link_hash_table *htab; | |
3810 | struct elf_segment_map *m, *pm = NULL; | |
3811 | ||
93ec5e23 AK |
3812 | if (!abfd || !info) |
3813 | return TRUE; | |
3814 | ||
b4cbbe8f | 3815 | htab = elf_s390_hash_table (info); |
93ec5e23 | 3816 | if (!htab || !htab->params->pgste) |
b4cbbe8f AK |
3817 | return TRUE; |
3818 | ||
3819 | /* If there is already a PT_S390_PGSTE header, avoid adding | |
3820 | another. */ | |
3821 | m = elf_seg_map (abfd); | |
3822 | while (m && m->p_type != PT_S390_PGSTE) | |
3823 | { | |
3824 | pm = m; | |
3825 | m = m->next; | |
3826 | } | |
3827 | ||
3828 | if (m) | |
3829 | return TRUE; | |
3830 | ||
3831 | m = (struct elf_segment_map *) | |
3832 | bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3833 | if (m == NULL) | |
3834 | return FALSE; | |
3835 | m->p_type = PT_S390_PGSTE; | |
3836 | m->count = 0; | |
3837 | m->next = NULL; | |
3838 | if (pm) | |
3839 | pm->next = m; | |
3840 | ||
3841 | return TRUE; | |
3842 | } | |
3843 | ||
3844 | bfd_boolean | |
3845 | bfd_elf_s390_set_options (struct bfd_link_info *info, | |
3846 | struct s390_elf_params *params) | |
3847 | { | |
3848 | struct elf_s390_link_hash_table *htab; | |
3849 | ||
93ec5e23 AK |
3850 | if (info) |
3851 | { | |
3852 | htab = elf_s390_hash_table (info); | |
3853 | if (htab) | |
3854 | htab->params = params; | |
3855 | } | |
b4cbbe8f AK |
3856 | |
3857 | return TRUE; | |
3858 | } | |
3859 | ||
3860 | ||
ae9a127f NC |
3861 | /* Why was the hash table entry size definition changed from |
3862 | ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and | |
3863 | this is the only reason for the s390_elf64_size_info structure. */ | |
a85d7ed0 NC |
3864 | |
3865 | const struct elf_size_info s390_elf64_size_info = | |
3866 | { | |
3867 | sizeof (Elf64_External_Ehdr), | |
3868 | sizeof (Elf64_External_Phdr), | |
3869 | sizeof (Elf64_External_Shdr), | |
3870 | sizeof (Elf64_External_Rel), | |
3871 | sizeof (Elf64_External_Rela), | |
3872 | sizeof (Elf64_External_Sym), | |
3873 | sizeof (Elf64_External_Dyn), | |
3874 | sizeof (Elf_External_Note), | |
ae9a127f NC |
3875 | 8, /* hash-table entry size. */ |
3876 | 1, /* internal relocations per external relocations. */ | |
3877 | 64, /* arch_size. */ | |
45d6a902 | 3878 | 3, /* log_file_align. */ |
a85d7ed0 NC |
3879 | ELFCLASS64, EV_CURRENT, |
3880 | bfd_elf64_write_out_phdrs, | |
3881 | bfd_elf64_write_shdrs_and_ehdr, | |
1489a3a0 | 3882 | bfd_elf64_checksum_contents, |
a85d7ed0 | 3883 | bfd_elf64_write_relocs, |
73ff0d56 | 3884 | bfd_elf64_swap_symbol_in, |
a85d7ed0 NC |
3885 | bfd_elf64_swap_symbol_out, |
3886 | bfd_elf64_slurp_reloc_table, | |
3887 | bfd_elf64_slurp_symbol_table, | |
3888 | bfd_elf64_swap_dyn_in, | |
3889 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
3890 | bfd_elf64_swap_reloc_in, |
3891 | bfd_elf64_swap_reloc_out, | |
3892 | bfd_elf64_swap_reloca_in, | |
3893 | bfd_elf64_swap_reloca_out | |
a85d7ed0 NC |
3894 | }; |
3895 | ||
6d00b590 | 3896 | #define TARGET_BIG_SYM s390_elf64_vec |
a85d7ed0 NC |
3897 | #define TARGET_BIG_NAME "elf64-s390" |
3898 | #define ELF_ARCH bfd_arch_s390 | |
ae95ffa6 | 3899 | #define ELF_TARGET_ID S390_ELF_DATA |
a85d7ed0 NC |
3900 | #define ELF_MACHINE_CODE EM_S390 |
3901 | #define ELF_MACHINE_ALT1 EM_S390_OLD | |
3902 | #define ELF_MAXPAGESIZE 0x1000 | |
3903 | ||
3904 | #define elf_backend_size_info s390_elf64_size_info | |
3905 | ||
3906 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 3907 | #define elf_backend_can_refcount 1 |
a85d7ed0 NC |
3908 | #define elf_backend_want_got_plt 1 |
3909 | #define elf_backend_plt_readonly 1 | |
3910 | #define elf_backend_want_plt_sym 0 | |
3911 | #define elf_backend_got_header_size 24 | |
5474d94f | 3912 | #define elf_backend_want_dynrelro 1 |
b491616a | 3913 | #define elf_backend_rela_normal 1 |
a85d7ed0 NC |
3914 | |
3915 | #define elf_info_to_howto elf_s390_info_to_howto | |
3916 | ||
a85d7ed0 NC |
3917 | #define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name |
3918 | #define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create | |
3919 | #define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup | |
07d6d2b8 | 3920 | #define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup |
643f7afb | 3921 | #define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data |
a85d7ed0 NC |
3922 | |
3923 | #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol | |
3924 | #define elf_backend_check_relocs elf_s390_check_relocs | |
0451c93c | 3925 | #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol |
9d19e4fd | 3926 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
a85d7ed0 NC |
3927 | #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections |
3928 | #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol | |
3929 | #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook | |
0451c93c | 3930 | #define elf_backend_reloc_type_class elf_s390_reloc_type_class |
a85d7ed0 NC |
3931 | #define elf_backend_relocate_section elf_s390_relocate_section |
3932 | #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections | |
74541ad4 | 3933 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
e3e9290d AA |
3934 | #define elf_backend_grok_prstatus elf_s390_grok_prstatus |
3935 | #define elf_backend_grok_psinfo elf_s390_grok_psinfo | |
3936 | #define elf_backend_write_core_note elf_s390_write_core_note | |
4c45e5c9 | 3937 | #define elf_backend_plt_sym_val elf_s390_plt_sym_val |
07d6d2b8 | 3938 | #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p |
b4cbbe8f AK |
3939 | #define elf_backend_additional_program_headers elf_s390_additional_program_headers |
3940 | #define elf_backend_modify_segment_map elf_s390_modify_segment_map | |
a85d7ed0 | 3941 | |
69fc87f1 MS |
3942 | #define bfd_elf64_mkobject elf_s390_mkobject |
3943 | #define elf_backend_object_p elf_s390_object_p | |
a85d7ed0 NC |
3944 | |
3945 | #include "elf64-target.h" |