Commit | Line | Data |
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a85d7ed0 | 1 | /* IBM S/390-specific support for 64-bit ELF |
2571583a | 2 | Copyright (C) 2000-2017 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 * | |
2c3fc389 NC |
192 | elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
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 | } | |
a85d7ed0 NC |
326 | return 0; |
327 | } | |
328 | ||
157090f7 AM |
329 | static reloc_howto_type * |
330 | elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
331 | const char *r_name) | |
332 | { | |
333 | unsigned int i; | |
334 | ||
335 | for (i = 0; | |
336 | i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); | |
337 | i++) | |
338 | if (elf_howto_table[i].name != NULL | |
339 | && strcasecmp (elf_howto_table[i].name, r_name) == 0) | |
340 | return &elf_howto_table[i]; | |
341 | ||
0bc7245a JK |
342 | if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0) |
343 | return &elf64_s390_vtinherit_howto; | |
344 | if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0) | |
345 | return &elf64_s390_vtentry_howto; | |
157090f7 AM |
346 | |
347 | return NULL; | |
348 | } | |
349 | ||
a85d7ed0 NC |
350 | /* We need to use ELF64_R_TYPE so we have our own copy of this function, |
351 | and elf64-s390.c has its own copy. */ | |
352 | ||
353 | static void | |
2c3fc389 NC |
354 | elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
355 | arelent *cache_ptr, | |
356 | Elf_Internal_Rela *dst) | |
a85d7ed0 | 357 | { |
d0fb9a8d JJ |
358 | unsigned int r_type = ELF64_R_TYPE(dst->r_info); |
359 | switch (r_type) | |
a85d7ed0 NC |
360 | { |
361 | case R_390_GNU_VTINHERIT: | |
362 | cache_ptr->howto = &elf64_s390_vtinherit_howto; | |
363 | break; | |
364 | ||
365 | case R_390_GNU_VTENTRY: | |
366 | cache_ptr->howto = &elf64_s390_vtentry_howto; | |
367 | break; | |
368 | ||
369 | default: | |
d0fb9a8d JJ |
370 | if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0])) |
371 | { | |
695344c0 | 372 | /* xgettext:c-format */ |
4eca0228 AM |
373 | _bfd_error_handler (_("%B: invalid relocation type %d"), |
374 | abfd, (int) r_type); | |
d0fb9a8d JJ |
375 | r_type = R_390_NONE; |
376 | } | |
377 | cache_ptr->howto = &elf_howto_table[r_type]; | |
99c79b2e | 378 | } |
a85d7ed0 NC |
379 | } |
380 | ||
69fc87f1 MS |
381 | /* A relocation function which doesn't do anything. */ |
382 | static bfd_reloc_status_type | |
2c3fc389 NC |
383 | s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
384 | arelent *reloc_entry, | |
385 | asymbol *symbol ATTRIBUTE_UNUSED, | |
386 | void * data ATTRIBUTE_UNUSED, | |
387 | asection *input_section, | |
388 | bfd *output_bfd, | |
389 | char **error_message ATTRIBUTE_UNUSED) | |
69fc87f1 MS |
390 | { |
391 | if (output_bfd) | |
392 | reloc_entry->address += input_section->output_offset; | |
393 | return bfd_reloc_ok; | |
394 | } | |
395 | ||
bd1ea41b MS |
396 | /* Handle the large displacement relocs. */ |
397 | static bfd_reloc_status_type | |
2c3fc389 NC |
398 | s390_elf_ldisp_reloc (bfd *abfd, |
399 | arelent *reloc_entry, | |
400 | asymbol *symbol, | |
401 | void * data, | |
402 | asection *input_section, | |
403 | bfd *output_bfd, | |
404 | char **error_message ATTRIBUTE_UNUSED) | |
bd1ea41b MS |
405 | { |
406 | reloc_howto_type *howto = reloc_entry->howto; | |
407 | bfd_vma relocation; | |
408 | bfd_vma insn; | |
409 | ||
410 | if (output_bfd != (bfd *) NULL | |
411 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
412 | && (! howto->partial_inplace | |
413 | || reloc_entry->addend == 0)) | |
414 | { | |
415 | reloc_entry->address += input_section->output_offset; | |
416 | return bfd_reloc_ok; | |
417 | } | |
418 | if (output_bfd != NULL) | |
419 | return bfd_reloc_continue; | |
420 | ||
07515404 | 421 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
bd1ea41b MS |
422 | return bfd_reloc_outofrange; |
423 | ||
424 | relocation = (symbol->value | |
425 | + symbol->section->output_section->vma | |
426 | + symbol->section->output_offset); | |
427 | relocation += reloc_entry->addend; | |
428 | if (howto->pc_relative) | |
429 | { | |
430 | relocation -= (input_section->output_section->vma | |
431 | + input_section->output_offset); | |
432 | relocation -= reloc_entry->address; | |
433 | } | |
434 | ||
68ffbac6 | 435 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
bd1ea41b MS |
436 | insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4; |
437 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
438 | ||
439 | if ((bfd_signed_vma) relocation < - 0x80000 | |
440 | || (bfd_signed_vma) relocation > 0x7ffff) | |
441 | return bfd_reloc_overflow; | |
442 | else | |
443 | return bfd_reloc_ok; | |
444 | } | |
445 | ||
b34976b6 | 446 | static bfd_boolean |
2c3fc389 | 447 | elf_s390_is_local_label_name (bfd *abfd, const char *name) |
a85d7ed0 NC |
448 | { |
449 | if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L')) | |
b34976b6 | 450 | return TRUE; |
a85d7ed0 NC |
451 | |
452 | return _bfd_elf_is_local_label_name (abfd, name); | |
453 | } | |
454 | ||
455 | /* Functions for the 390 ELF linker. */ | |
456 | ||
457 | /* The name of the dynamic interpreter. This is put in the .interp | |
458 | section. */ | |
459 | ||
87049b0d | 460 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1" |
a85d7ed0 | 461 | |
64285810 MS |
462 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
463 | copying dynamic variables from a shared lib into an app's dynbss | |
464 | section, and instead use a dynamic relocation to point into the | |
465 | shared lib. */ | |
466 | #define ELIMINATE_COPY_RELOCS 1 | |
467 | ||
a85d7ed0 NC |
468 | /* The size in bytes of the first entry in the procedure linkage table. */ |
469 | #define PLT_FIRST_ENTRY_SIZE 32 | |
470 | /* The size in bytes of an entry in the procedure linkage table. */ | |
99c79b2e | 471 | #define PLT_ENTRY_SIZE 32 |
a85d7ed0 NC |
472 | |
473 | #define GOT_ENTRY_SIZE 8 | |
474 | ||
470b557a AK |
475 | #define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela) |
476 | ||
a85d7ed0 NC |
477 | /* The first three entries in a procedure linkage table are reserved, |
478 | and the initial contents are unimportant (we zero them out). | |
479 | Subsequent entries look like this. See the SVR4 ABI 386 | |
480 | supplement to see how this works. */ | |
481 | ||
482 | /* For the s390, simple addr offset can only be 0 - 4096. | |
483 | To use the full 16777216 TB address space, several instructions | |
484 | are needed to load an address in a register and execute | |
485 | a branch( or just saving the address) | |
486 | ||
99c79b2e | 487 | Furthermore, only r 0 and 1 are free to use!!! */ |
a85d7ed0 NC |
488 | |
489 | /* The first 3 words in the GOT are then reserved. | |
490 | Word 0 is the address of the dynamic table. | |
491 | Word 1 is a pointer to a structure describing the object | |
492 | Word 2 is used to point to the loader entry address. | |
493 | ||
494 | The code for PLT entries looks like this: | |
495 | ||
496 | The GOT holds the address in the PLT to be executed. | |
497 | The loader then gets: | |
3b67f094 MK |
498 | 48(15) = Pointer to the structure describing the object. |
499 | 56(15) = Offset in symbol table | |
a85d7ed0 NC |
500 | The loader must then find the module where the function is |
501 | and insert the address in the GOT. | |
502 | ||
503 | PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1 | |
07d6d2b8 AM |
504 | LG 1,0(1) # 6 bytes Load address from GOT in r1 |
505 | BCR 15,1 # 2 bytes Jump to address | |
506 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
507 | LGF 1,12(1) # 6 bytes Load offset in symbl table in r1 | |
508 | BRCL 15,-x # 6 bytes Jump to start of PLT | |
509 | .long ? # 4 bytes offset into .rela.plt | |
a85d7ed0 NC |
510 | |
511 | Total = 32 bytes per PLT entry | |
512 | Fixup at offset 2: relative address to GOT entry | |
513 | Fixup at offset 22: relative branch to PLT0 | |
a7e28bbe | 514 | Fixup at offset 28: 32 bit offset into .rela.plt |
a85d7ed0 | 515 | |
a7e28bbe AK |
516 | A 32 bit offset into the symbol table is enough. It allows for |
517 | .rela.plt sections up to a size of 2 gigabyte. A single dynamic | |
518 | object (the main program, any shared library) is limited to 4GB in | |
519 | size. Having a .rela.plt of 2GB would already make the .plt | |
520 | section bigger than 8GB. */ | |
a85d7ed0 | 521 | |
9aa17453 AK |
522 | static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] = |
523 | { | |
07d6d2b8 AM |
524 | 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */ |
525 | 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */ | |
526 | 0x07, 0xf1, /* br %r1 */ | |
527 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
528 | 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */ | |
529 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */ | |
530 | 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */ | |
9aa17453 | 531 | }; |
a85d7ed0 NC |
532 | |
533 | /* The first PLT entry pushes the offset into the symbol table | |
a7e28bbe AK |
534 | from R1 onto the stack at 56(15) and the loader object info |
535 | at 48(15), loads the loader address in R1 and jumps to it. */ | |
a85d7ed0 NC |
536 | |
537 | /* The first entry in the PLT: | |
538 | ||
539 | PLT0: | |
540 | STG 1,56(15) # r1 contains the offset into the symbol table | |
541 | LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table | |
542 | MVC 48(8,15),8(1) # move loader ino (object struct address) to stack | |
543 | LG 1,16(1) # get entry address of loader | |
544 | BCR 15,1 # jump to loader | |
545 | ||
546 | Fixup at offset 8: relative address to start of GOT. */ | |
547 | ||
9aa17453 AK |
548 | static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] = |
549 | { | |
07d6d2b8 AM |
550 | 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */ |
551 | 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */ | |
552 | 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */ | |
553 | 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */ | |
554 | 0x07, 0xf1, /* br %r1 */ | |
555 | 0x07, 0x00, /* nopr %r0 */ | |
556 | 0x07, 0x00, /* nopr %r0 */ | |
557 | 0x07, 0x00 /* nopr %r0 */ | |
9aa17453 | 558 | }; |
a85d7ed0 | 559 | |
a85d7ed0 NC |
560 | |
561 | /* s390 ELF linker hash entry. */ | |
562 | ||
563 | struct elf_s390_link_hash_entry | |
564 | { | |
0451c93c | 565 | struct elf_link_hash_entry elf; |
a85d7ed0 | 566 | |
0451c93c | 567 | /* Track dynamic relocs copied for this symbol. */ |
00d8c7a9 | 568 | struct elf_dyn_relocs *dyn_relocs; |
5236c819 MS |
569 | |
570 | /* Number of GOTPLT references for a function. */ | |
571 | bfd_signed_vma gotplt_refcount; | |
69fc87f1 MS |
572 | |
573 | #define GOT_UNKNOWN 0 | |
574 | #define GOT_NORMAL 1 | |
575 | #define GOT_TLS_GD 2 | |
576 | #define GOT_TLS_IE 3 | |
577 | #define GOT_TLS_IE_NLT 3 | |
578 | unsigned char tls_type; | |
470b557a AK |
579 | |
580 | /* For pointer equality reasons we might need to change the symbol | |
581 | type from STT_GNU_IFUNC to STT_FUNC together with its value and | |
582 | section entry. So after alloc_dynrelocs only these values should | |
583 | be used. In order to check whether a symbol is IFUNC use | |
584 | s390_is_ifunc_symbol_p. */ | |
585 | bfd_vma ifunc_resolver_address; | |
586 | asection *ifunc_resolver_section; | |
a85d7ed0 NC |
587 | }; |
588 | ||
69fc87f1 MS |
589 | #define elf_s390_hash_entry(ent) \ |
590 | ((struct elf_s390_link_hash_entry *)(ent)) | |
591 | ||
470b557a AK |
592 | /* This structure represents an entry in the local PLT list needed for |
593 | local IFUNC symbols. */ | |
594 | struct plt_entry | |
595 | { | |
596 | /* The section of the local symbol. | |
597 | Set in relocate_section and used in finish_dynamic_sections. */ | |
598 | asection *sec; | |
599 | ||
600 | union | |
601 | { | |
602 | bfd_signed_vma refcount; | |
603 | bfd_vma offset; | |
604 | } plt; | |
605 | }; | |
606 | ||
0ffa91dd NC |
607 | /* NOTE: Keep this structure in sync with |
608 | the one declared in elf32-s390.c. */ | |
69fc87f1 MS |
609 | struct elf_s390_obj_tdata |
610 | { | |
611 | struct elf_obj_tdata root; | |
612 | ||
470b557a AK |
613 | /* A local PLT is needed for ifunc symbols. */ |
614 | struct plt_entry *local_plt; | |
615 | ||
0ffa91dd | 616 | /* TLS type for each local got entry. */ |
69fc87f1 MS |
617 | char *local_got_tls_type; |
618 | }; | |
619 | ||
620 | #define elf_s390_tdata(abfd) \ | |
621 | ((struct elf_s390_obj_tdata *) (abfd)->tdata.any) | |
622 | ||
470b557a AK |
623 | #define elf_s390_local_plt(abfd) \ |
624 | (elf_s390_tdata (abfd)->local_plt) | |
625 | ||
69fc87f1 MS |
626 | #define elf_s390_local_got_tls_type(abfd) \ |
627 | (elf_s390_tdata (abfd)->local_got_tls_type) | |
628 | ||
0ffa91dd NC |
629 | #define is_s390_elf(bfd) \ |
630 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
631 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 632 | && elf_object_id (bfd) == S390_ELF_DATA) |
0ffa91dd | 633 | |
69fc87f1 | 634 | static bfd_boolean |
62d7a5f6 | 635 | elf_s390_mkobject (bfd *abfd) |
69fc87f1 | 636 | { |
0ffa91dd | 637 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata), |
4dfe6ac6 | 638 | S390_ELF_DATA); |
69fc87f1 MS |
639 | } |
640 | ||
641 | static bfd_boolean | |
2c3fc389 | 642 | elf_s390_object_p (bfd *abfd) |
69fc87f1 | 643 | { |
69fc87f1 MS |
644 | /* Set the right machine number for an s390 elf32 file. */ |
645 | return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64); | |
646 | } | |
647 | ||
a85d7ed0 NC |
648 | /* s390 ELF linker hash table. */ |
649 | ||
650 | struct elf_s390_link_hash_table | |
651 | { | |
0451c93c | 652 | struct elf_link_hash_table elf; |
a85d7ed0 | 653 | |
0451c93c | 654 | /* Short-cuts to get to dynamic linker sections. */ |
470b557a | 655 | asection *irelifunc; |
ec338859 | 656 | |
69fc87f1 MS |
657 | union { |
658 | bfd_signed_vma refcount; | |
659 | bfd_vma offset; | |
660 | } tls_ldm_got; | |
661 | ||
87d72d41 AM |
662 | /* Small local sym cache. */ |
663 | struct sym_cache sym_cache; | |
b4cbbe8f AK |
664 | |
665 | /* Options passed from the linker. */ | |
666 | struct s390_elf_params *params; | |
0451c93c | 667 | }; |
a85d7ed0 NC |
668 | |
669 | /* Get the s390 ELF linker hash table from a link_info structure. */ | |
670 | ||
ceada896 AA |
671 | #define elf_s390_hash_table(p) \ |
672 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ | |
673 | == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL) | |
a85d7ed0 | 674 | |
470b557a AK |
675 | #define ELF64 1 |
676 | #include "elf-s390-common.c" | |
677 | ||
a85d7ed0 NC |
678 | /* Create an entry in an s390 ELF linker hash table. */ |
679 | ||
680 | static struct bfd_hash_entry * | |
2c3fc389 NC |
681 | link_hash_newfunc (struct bfd_hash_entry *entry, |
682 | struct bfd_hash_table *table, | |
683 | const char *string) | |
a85d7ed0 | 684 | { |
a85d7ed0 NC |
685 | /* Allocate the structure if it has not already been allocated by a |
686 | subclass. */ | |
0451c93c MS |
687 | if (entry == NULL) |
688 | { | |
689 | entry = bfd_hash_allocate (table, | |
690 | sizeof (struct elf_s390_link_hash_entry)); | |
691 | if (entry == NULL) | |
692 | return entry; | |
693 | } | |
a85d7ed0 NC |
694 | |
695 | /* Call the allocation method of the superclass. */ | |
0451c93c MS |
696 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
697 | if (entry != NULL) | |
a85d7ed0 | 698 | { |
0451c93c MS |
699 | struct elf_s390_link_hash_entry *eh; |
700 | ||
701 | eh = (struct elf_s390_link_hash_entry *) entry; | |
702 | eh->dyn_relocs = NULL; | |
5236c819 | 703 | eh->gotplt_refcount = 0; |
69fc87f1 | 704 | eh->tls_type = GOT_UNKNOWN; |
470b557a AK |
705 | eh->ifunc_resolver_address = 0; |
706 | eh->ifunc_resolver_section = NULL; | |
a85d7ed0 NC |
707 | } |
708 | ||
0451c93c | 709 | return entry; |
a85d7ed0 NC |
710 | } |
711 | ||
712 | /* Create an s390 ELF linker hash table. */ | |
713 | ||
714 | static struct bfd_link_hash_table * | |
2c3fc389 | 715 | elf_s390_link_hash_table_create (bfd *abfd) |
a85d7ed0 NC |
716 | { |
717 | struct elf_s390_link_hash_table *ret; | |
dc810e39 | 718 | bfd_size_type amt = sizeof (struct elf_s390_link_hash_table); |
a85d7ed0 | 719 | |
7bf52ea2 | 720 | ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt); |
0451c93c | 721 | if (ret == NULL) |
a85d7ed0 NC |
722 | return NULL; |
723 | ||
66eb6687 | 724 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
725 | sizeof (struct elf_s390_link_hash_entry), |
726 | S390_ELF_DATA)) | |
a85d7ed0 | 727 | { |
e2d34d7d | 728 | free (ret); |
a85d7ed0 NC |
729 | return NULL; |
730 | } | |
731 | ||
0451c93c MS |
732 | return &ret->elf.root; |
733 | } | |
734 | ||
0451c93c MS |
735 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
736 | ||
737 | static void | |
2c3fc389 NC |
738 | elf_s390_copy_indirect_symbol (struct bfd_link_info *info, |
739 | struct elf_link_hash_entry *dir, | |
740 | struct elf_link_hash_entry *ind) | |
0451c93c MS |
741 | { |
742 | struct elf_s390_link_hash_entry *edir, *eind; | |
743 | ||
744 | edir = (struct elf_s390_link_hash_entry *) dir; | |
745 | eind = (struct elf_s390_link_hash_entry *) ind; | |
746 | ||
747 | if (eind->dyn_relocs != NULL) | |
748 | { | |
749 | if (edir->dyn_relocs != NULL) | |
750 | { | |
00d8c7a9 AK |
751 | struct elf_dyn_relocs **pp; |
752 | struct elf_dyn_relocs *p; | |
0451c93c | 753 | |
fcfa13d2 | 754 | /* Add reloc counts against the indirect sym to the direct sym |
0451c93c MS |
755 | list. Merge any entries against the same section. */ |
756 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
757 | { | |
00d8c7a9 | 758 | struct elf_dyn_relocs *q; |
0451c93c MS |
759 | |
760 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
761 | if (q->sec == p->sec) | |
762 | { | |
763 | q->pc_count += p->pc_count; | |
764 | q->count += p->count; | |
765 | *pp = p->next; | |
766 | break; | |
767 | } | |
768 | if (q == NULL) | |
769 | pp = &p->next; | |
770 | } | |
771 | *pp = edir->dyn_relocs; | |
772 | } | |
773 | ||
774 | edir->dyn_relocs = eind->dyn_relocs; | |
775 | eind->dyn_relocs = NULL; | |
776 | } | |
777 | ||
69fc87f1 MS |
778 | if (ind->root.type == bfd_link_hash_indirect |
779 | && dir->got.refcount <= 0) | |
780 | { | |
781 | edir->tls_type = eind->tls_type; | |
782 | eind->tls_type = GOT_UNKNOWN; | |
783 | } | |
784 | ||
64285810 MS |
785 | if (ELIMINATE_COPY_RELOCS |
786 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
787 | && dir->dynamic_adjusted) |
788 | { | |
789 | /* If called to transfer flags for a weakdef during processing | |
790 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
791 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
e81830c5 AM |
792 | if (dir->versioned != versioned_hidden) |
793 | dir->ref_dynamic |= ind->ref_dynamic; | |
f5385ebf AM |
794 | dir->ref_regular |= ind->ref_regular; |
795 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
796 | dir->needs_plt |= ind->needs_plt; | |
797 | } | |
64285810 | 798 | else |
fcfa13d2 | 799 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
0451c93c | 800 | } |
a85d7ed0 | 801 | |
69fc87f1 | 802 | static int |
2c3fc389 NC |
803 | elf_s390_tls_transition (struct bfd_link_info *info, |
804 | int r_type, | |
805 | int is_local) | |
69fc87f1 | 806 | { |
0e1862bb | 807 | if (bfd_link_pic (info)) |
69fc87f1 MS |
808 | return r_type; |
809 | ||
810 | switch (r_type) | |
811 | { | |
812 | case R_390_TLS_GD64: | |
813 | case R_390_TLS_IE64: | |
814 | if (is_local) | |
815 | return R_390_TLS_LE64; | |
816 | return R_390_TLS_IE64; | |
817 | case R_390_TLS_GOTIE64: | |
818 | if (is_local) | |
819 | return R_390_TLS_LE64; | |
820 | return R_390_TLS_GOTIE64; | |
821 | case R_390_TLS_LDM64: | |
822 | return R_390_TLS_LE64; | |
823 | } | |
824 | ||
825 | return r_type; | |
826 | } | |
827 | ||
a85d7ed0 NC |
828 | /* Look through the relocs for a section during the first phase, and |
829 | allocate space in the global offset table or procedure linkage | |
830 | table. */ | |
831 | ||
b34976b6 | 832 | static bfd_boolean |
4dfe6ac6 NC |
833 | elf_s390_check_relocs (bfd *abfd, |
834 | struct bfd_link_info *info, | |
835 | asection *sec, | |
836 | const Elf_Internal_Rela *relocs) | |
a85d7ed0 | 837 | { |
0451c93c | 838 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
839 | Elf_Internal_Shdr *symtab_hdr; |
840 | struct elf_link_hash_entry **sym_hashes; | |
a85d7ed0 NC |
841 | const Elf_Internal_Rela *rel; |
842 | const Elf_Internal_Rela *rel_end; | |
a85d7ed0 | 843 | asection *sreloc; |
5236c819 | 844 | bfd_signed_vma *local_got_refcounts; |
69fc87f1 | 845 | int tls_type, old_tls_type; |
a85d7ed0 | 846 | |
0e1862bb | 847 | if (bfd_link_relocatable (info)) |
b34976b6 | 848 | return TRUE; |
a85d7ed0 | 849 | |
0ffa91dd NC |
850 | BFD_ASSERT (is_s390_elf (abfd)); |
851 | ||
0451c93c | 852 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
853 | if (htab == NULL) |
854 | return FALSE; | |
855 | ||
0ffa91dd | 856 | symtab_hdr = &elf_symtab_hdr (abfd); |
a85d7ed0 | 857 | sym_hashes = elf_sym_hashes (abfd); |
5236c819 | 858 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 859 | |
a85d7ed0 NC |
860 | sreloc = NULL; |
861 | ||
862 | rel_end = relocs + sec->reloc_count; | |
863 | for (rel = relocs; rel < rel_end; rel++) | |
864 | { | |
69fc87f1 | 865 | unsigned int r_type; |
d42c267e | 866 | unsigned int r_symndx; |
a85d7ed0 | 867 | struct elf_link_hash_entry *h; |
470b557a | 868 | Elf_Internal_Sym *isym; |
a85d7ed0 NC |
869 | |
870 | r_symndx = ELF64_R_SYM (rel->r_info); | |
871 | ||
0451c93c MS |
872 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
873 | { | |
695344c0 | 874 | /* xgettext:c-format */ |
4eca0228 AM |
875 | _bfd_error_handler (_("%B: bad symbol index: %d"), |
876 | abfd, r_symndx); | |
b34976b6 | 877 | return FALSE; |
0451c93c MS |
878 | } |
879 | ||
a85d7ed0 | 880 | if (r_symndx < symtab_hdr->sh_info) |
470b557a AK |
881 | { |
882 | /* A local symbol. */ | |
883 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
884 | abfd, r_symndx); | |
885 | if (isym == NULL) | |
886 | return FALSE; | |
887 | ||
888 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
889 | { | |
890 | struct plt_entry *plt; | |
891 | ||
0cb79d69 AK |
892 | if (htab->elf.dynobj == NULL) |
893 | htab->elf.dynobj = abfd; | |
894 | ||
470b557a AK |
895 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) |
896 | return FALSE; | |
897 | ||
898 | if (local_got_refcounts == NULL) | |
899 | { | |
900 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) | |
901 | return FALSE; | |
902 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
903 | } | |
904 | plt = elf_s390_local_plt (abfd); | |
905 | plt[r_symndx].plt.refcount++; | |
906 | } | |
907 | h = NULL; | |
908 | } | |
a85d7ed0 | 909 | else |
973a3492 L |
910 | { |
911 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
912 | while (h->root.type == bfd_link_hash_indirect | |
913 | || h->root.type == bfd_link_hash_warning) | |
914 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
915 | } | |
a85d7ed0 | 916 | |
5236c819 MS |
917 | /* Create got section and local_got_refcounts array if they |
918 | are needed. */ | |
69fc87f1 MS |
919 | r_type = elf_s390_tls_transition (info, |
920 | ELF64_R_TYPE (rel->r_info), | |
921 | h == NULL); | |
922 | switch (r_type) | |
a85d7ed0 NC |
923 | { |
924 | case R_390_GOT12: | |
947216bf | 925 | case R_390_GOT16: |
bd1ea41b | 926 | case R_390_GOT20: |
a85d7ed0 NC |
927 | case R_390_GOT32: |
928 | case R_390_GOT64: | |
929 | case R_390_GOTENT: | |
5236c819 MS |
930 | case R_390_GOTPLT12: |
931 | case R_390_GOTPLT16: | |
bd1ea41b | 932 | case R_390_GOTPLT20: |
5236c819 MS |
933 | case R_390_GOTPLT32: |
934 | case R_390_GOTPLT64: | |
935 | case R_390_GOTPLTENT: | |
69fc87f1 MS |
936 | case R_390_TLS_GD64: |
937 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 938 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
939 | case R_390_TLS_GOTIE64: |
940 | case R_390_TLS_IEENT: | |
941 | case R_390_TLS_IE64: | |
942 | case R_390_TLS_LDM64: | |
5236c819 MS |
943 | if (h == NULL |
944 | && local_got_refcounts == NULL) | |
a85d7ed0 | 945 | { |
470b557a | 946 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) |
5236c819 | 947 | return FALSE; |
470b557a | 948 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 949 | } |
470b557a | 950 | |
5236c819 MS |
951 | /* Fall through. */ |
952 | case R_390_GOTOFF16: | |
953 | case R_390_GOTOFF32: | |
954 | case R_390_GOTOFF64: | |
0451c93c MS |
955 | case R_390_GOTPC: |
956 | case R_390_GOTPCDBL: | |
f41345a7 | 957 | if (htab->elf.sgot == NULL) |
0451c93c MS |
958 | { |
959 | if (htab->elf.dynobj == NULL) | |
960 | htab->elf.dynobj = abfd; | |
ce558b89 | 961 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) |
b34976b6 | 962 | return FALSE; |
0451c93c | 963 | } |
5236c819 MS |
964 | } |
965 | ||
470b557a AK |
966 | if (h != NULL) |
967 | { | |
968 | if (htab->elf.dynobj == NULL) | |
969 | htab->elf.dynobj = abfd; | |
970 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
971 | return FALSE; | |
972 | ||
973 | /* Make sure an IFUNC symbol defined in a non-shared object | |
974 | always gets a PLT slot. */ | |
975 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
976 | { | |
977 | /* The symbol is called by the dynamic loader in order | |
978 | to resolve the relocation. So it is in fact also | |
979 | referenced. */ | |
980 | h->ref_regular = 1; | |
981 | h->needs_plt = 1; | |
982 | } | |
983 | } | |
984 | ||
69fc87f1 | 985 | switch (r_type) |
5236c819 | 986 | { |
5236c819 MS |
987 | case R_390_GOTPC: |
988 | case R_390_GOTPCDBL: | |
470b557a AK |
989 | /* These relocs do not need a GOT slot. They just load the |
990 | GOT pointer itself or address something else relative to | |
991 | the GOT. Since the GOT pointer has been set up above we | |
992 | are done. */ | |
0451c93c | 993 | break; |
d47b13e0 AK |
994 | case R_390_GOTOFF16: |
995 | case R_390_GOTOFF32: | |
996 | case R_390_GOTOFF64: | |
997 | if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular) | |
998 | break; | |
1a0670f3 | 999 | /* Fall through. */ |
ec338859 | 1000 | |
fb798c50 | 1001 | case R_390_PLT12DBL: |
947216bf | 1002 | case R_390_PLT16DBL: |
fb798c50 | 1003 | case R_390_PLT24DBL: |
a85d7ed0 NC |
1004 | case R_390_PLT32: |
1005 | case R_390_PLT32DBL: | |
1006 | case R_390_PLT64: | |
5236c819 MS |
1007 | case R_390_PLTOFF16: |
1008 | case R_390_PLTOFF32: | |
1009 | case R_390_PLTOFF64: | |
a85d7ed0 | 1010 | /* This symbol requires a procedure linkage table entry. We |
947216bf AM |
1011 | actually build the entry in adjust_dynamic_symbol, |
1012 | because this might be a case of linking PIC code which is | |
1013 | never referenced by a dynamic object, in which case we | |
1014 | don't need to generate a procedure linkage table entry | |
1015 | after all. */ | |
ec338859 | 1016 | |
a85d7ed0 | 1017 | /* If this is a local symbol, we resolve it directly without |
947216bf | 1018 | creating a procedure linkage table entry. */ |
5236c819 MS |
1019 | if (h != NULL) |
1020 | { | |
f5385ebf | 1021 | h->needs_plt = 1; |
5236c819 MS |
1022 | h->plt.refcount += 1; |
1023 | } | |
1024 | break; | |
ec338859 | 1025 | |
5236c819 MS |
1026 | case R_390_GOTPLT12: |
1027 | case R_390_GOTPLT16: | |
bd1ea41b | 1028 | case R_390_GOTPLT20: |
5236c819 MS |
1029 | case R_390_GOTPLT32: |
1030 | case R_390_GOTPLT64: | |
1031 | case R_390_GOTPLTENT: | |
1032 | /* This symbol requires either a procedure linkage table entry | |
1033 | or an entry in the local got. We actually build the entry | |
1034 | in adjust_dynamic_symbol because whether this is really a | |
1035 | global reference can change and with it the fact if we have | |
1036 | to create a plt entry or a local got entry. To be able to | |
1037 | make a once global symbol a local one we have to keep track | |
1038 | of the number of gotplt references that exist for this | |
1039 | symbol. */ | |
1040 | if (h != NULL) | |
1041 | { | |
1042 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++; | |
f5385ebf | 1043 | h->needs_plt = 1; |
5236c819 MS |
1044 | h->plt.refcount += 1; |
1045 | } | |
69fc87f1 MS |
1046 | else |
1047 | local_got_refcounts[r_symndx] += 1; | |
1048 | break; | |
1049 | ||
1050 | case R_390_TLS_LDM64: | |
1051 | htab->tls_ldm_got.refcount += 1; | |
1052 | break; | |
1053 | ||
1054 | case R_390_TLS_IE64: | |
1055 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1056 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1057 | case R_390_TLS_GOTIE64: |
1058 | case R_390_TLS_IEENT: | |
0e1862bb | 1059 | if (bfd_link_pic (info)) |
69fc87f1 MS |
1060 | info->flags |= DF_STATIC_TLS; |
1061 | /* Fall through */ | |
1062 | ||
1063 | case R_390_GOT12: | |
26e41594 | 1064 | case R_390_GOT16: |
bd1ea41b | 1065 | case R_390_GOT20: |
69fc87f1 MS |
1066 | case R_390_GOT32: |
1067 | case R_390_GOT64: | |
1068 | case R_390_GOTENT: | |
1069 | case R_390_TLS_GD64: | |
1070 | /* This symbol requires a global offset table entry. */ | |
1071 | switch (r_type) | |
1072 | { | |
1073 | default: | |
1074 | case R_390_GOT12: | |
1075 | case R_390_GOT16: | |
bd1ea41b | 1076 | case R_390_GOT20: |
69fc87f1 MS |
1077 | case R_390_GOT32: |
1078 | case R_390_GOTENT: | |
1079 | tls_type = GOT_NORMAL; | |
1080 | break; | |
1081 | case R_390_TLS_GD64: | |
1082 | tls_type = GOT_TLS_GD; | |
1083 | break; | |
1084 | case R_390_TLS_IE64: | |
1085 | case R_390_TLS_GOTIE64: | |
1086 | tls_type = GOT_TLS_IE; | |
1087 | break; | |
1088 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1089 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1090 | case R_390_TLS_IEENT: |
1091 | tls_type = GOT_TLS_IE_NLT; | |
1092 | break; | |
1093 | } | |
1094 | ||
1095 | if (h != NULL) | |
1096 | { | |
1097 | h->got.refcount += 1; | |
1098 | old_tls_type = elf_s390_hash_entry(h)->tls_type; | |
1099 | } | |
5236c819 MS |
1100 | else |
1101 | { | |
1102 | local_got_refcounts[r_symndx] += 1; | |
69fc87f1 | 1103 | old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx]; |
5236c819 | 1104 | } |
69fc87f1 MS |
1105 | /* If a TLS symbol is accessed using IE at least once, |
1106 | there is no point to use dynamic model for it. */ | |
1107 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN) | |
1108 | { | |
1109 | if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL) | |
1110 | { | |
4eca0228 | 1111 | _bfd_error_handler |
695344c0 | 1112 | /* xgettext:c-format */ |
d003868e AM |
1113 | (_("%B: `%s' accessed both as normal and thread local symbol"), |
1114 | abfd, h->root.root.string); | |
69fc87f1 MS |
1115 | return FALSE; |
1116 | } | |
1117 | if (old_tls_type > tls_type) | |
1118 | tls_type = old_tls_type; | |
1119 | } | |
1120 | ||
1121 | if (old_tls_type != tls_type) | |
1122 | { | |
1123 | if (h != NULL) | |
1124 | elf_s390_hash_entry (h)->tls_type = tls_type; | |
1125 | else | |
1126 | elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1127 | } | |
1128 | ||
1129 | if (r_type != R_390_TLS_IE64) | |
1130 | break; | |
1131 | /* Fall through */ | |
1132 | ||
1133 | case R_390_TLS_LE64: | |
e00d879a AK |
1134 | /* For static linking and executables this reloc will be |
1135 | calculated at linktime otherwise a TLS_TPOFF runtime | |
1136 | reloc will be generated. */ | |
0e1862bb | 1137 | if (r_type == R_390_TLS_LE64 && bfd_link_pie (info)) |
e00d879a AK |
1138 | break; |
1139 | ||
0e1862bb | 1140 | if (!bfd_link_pic (info)) |
69fc87f1 MS |
1141 | break; |
1142 | info->flags |= DF_STATIC_TLS; | |
1143 | /* Fall through */ | |
ec338859 | 1144 | |
947216bf AM |
1145 | case R_390_8: |
1146 | case R_390_16: | |
a85d7ed0 NC |
1147 | case R_390_32: |
1148 | case R_390_64: | |
fb798c50 | 1149 | case R_390_PC12DBL: |
947216bf AM |
1150 | case R_390_PC16: |
1151 | case R_390_PC16DBL: | |
fb798c50 | 1152 | case R_390_PC24DBL: |
a85d7ed0 NC |
1153 | case R_390_PC32: |
1154 | case R_390_PC32DBL: | |
1155 | case R_390_PC64: | |
99ba5125 | 1156 | if (h != NULL && bfd_link_executable (info)) |
0451c93c MS |
1157 | { |
1158 | /* If this reloc is in a read-only section, we might | |
1159 | need a copy reloc. We can't check reliably at this | |
1160 | stage whether the section is read-only, as input | |
1161 | sections have not yet been mapped to output sections. | |
1162 | Tentatively set the flag for now, and correct in | |
1163 | adjust_dynamic_symbol. */ | |
f5385ebf | 1164 | h->non_got_ref = 1; |
ec338859 | 1165 | |
0e1862bb | 1166 | if (!bfd_link_pic (info)) |
470b557a AK |
1167 | { |
1168 | /* We may need a .plt entry if the function this reloc | |
1169 | refers to is in a shared lib. */ | |
1170 | h->plt.refcount += 1; | |
1171 | } | |
0451c93c | 1172 | } |
ec338859 | 1173 | |
a85d7ed0 | 1174 | /* If we are creating a shared library, and this is a reloc |
0451c93c MS |
1175 | against a global symbol, or a non PC relative reloc |
1176 | against a local symbol, then we need to copy the reloc | |
1177 | into the shared library. However, if we are linking with | |
1178 | -Bsymbolic, we do not need to copy a reloc against a | |
1179 | global symbol which is defined in an object we are | |
1180 | including in the link (i.e., DEF_REGULAR is set). At | |
1181 | this point we have not seen all the input files, so it is | |
1182 | possible that DEF_REGULAR is not set now but will be set | |
1183 | later (it is never cleared). In case of a weak definition, | |
1184 | DEF_REGULAR may be cleared later by a strong definition in | |
1185 | a shared library. We account for that possibility below by | |
1186 | storing information in the relocs_copied field of the hash | |
1187 | table entry. A similar situation occurs when creating | |
1188 | shared libraries and symbol visibility changes render the | |
1189 | symbol local. | |
1190 | ||
1191 | If on the other hand, we are creating an executable, we | |
1192 | may need to keep relocations for symbols satisfied by a | |
1193 | dynamic library if we manage to avoid copy relocs for the | |
1194 | symbol. */ | |
0e1862bb | 1195 | if ((bfd_link_pic (info) |
0451c93c MS |
1196 | && (sec->flags & SEC_ALLOC) != 0 |
1197 | && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16 | |
fb798c50 | 1198 | && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL |
0451c93c | 1199 | && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL |
fb798c50 | 1200 | && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL |
0451c93c MS |
1201 | && ELF64_R_TYPE (rel->r_info) != R_390_PC32 |
1202 | && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL | |
1203 | && ELF64_R_TYPE (rel->r_info) != R_390_PC64) | |
1204 | || (h != NULL | |
8c21ca21 | 1205 | && (! SYMBOLIC_BIND (info, h) |
0451c93c | 1206 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1207 | || !h->def_regular)))) |
64285810 | 1208 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 1209 | && !bfd_link_pic (info) |
0451c93c MS |
1210 | && (sec->flags & SEC_ALLOC) != 0 |
1211 | && h != NULL | |
1212 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 1213 | || !h->def_regular))) |
a85d7ed0 | 1214 | { |
00d8c7a9 AK |
1215 | struct elf_dyn_relocs *p; |
1216 | struct elf_dyn_relocs **head; | |
ec338859 | 1217 | |
0451c93c MS |
1218 | /* We must copy these reloc types into the output file. |
1219 | Create a reloc section in dynobj and make room for | |
1220 | this reloc. */ | |
a85d7ed0 NC |
1221 | if (sreloc == NULL) |
1222 | { | |
440e9cd2 AK |
1223 | if (htab->elf.dynobj == NULL) |
1224 | htab->elf.dynobj = abfd; | |
1225 | ||
83bac4b0 NC |
1226 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1227 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
ec338859 | 1228 | |
a85d7ed0 | 1229 | if (sreloc == NULL) |
83bac4b0 | 1230 | return FALSE; |
a85d7ed0 | 1231 | } |
ec338859 | 1232 | |
0451c93c MS |
1233 | /* If this is a global symbol, we count the number of |
1234 | relocations we need for this symbol. */ | |
1235 | if (h != NULL) | |
a85d7ed0 | 1236 | { |
ec338859 | 1237 | head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs; |
0451c93c MS |
1238 | } |
1239 | else | |
1240 | { | |
ec338859 AM |
1241 | /* Track dynamic relocs needed for local syms too. |
1242 | We really need local syms available to do this | |
1243 | easily. Oh well. */ | |
ec338859 | 1244 | asection *s; |
6edfbbad DJ |
1245 | void *vpp; |
1246 | ||
87d72d41 AM |
1247 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1248 | abfd, r_symndx); | |
1249 | if (isym == NULL) | |
b34976b6 | 1250 | return FALSE; |
ec338859 | 1251 | |
87d72d41 AM |
1252 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
1253 | if (s == NULL) | |
1254 | s = sec; | |
1255 | ||
6edfbbad | 1256 | vpp = &elf_section_data (s)->local_dynrel; |
00d8c7a9 | 1257 | head = (struct elf_dyn_relocs **) vpp; |
ec338859 AM |
1258 | } |
1259 | ||
1260 | p = *head; | |
1261 | if (p == NULL || p->sec != sec) | |
1262 | { | |
1263 | bfd_size_type amt = sizeof *p; | |
00d8c7a9 | 1264 | p = ((struct elf_dyn_relocs *) |
ec338859 AM |
1265 | bfd_alloc (htab->elf.dynobj, amt)); |
1266 | if (p == NULL) | |
b34976b6 | 1267 | return FALSE; |
ec338859 AM |
1268 | p->next = *head; |
1269 | *head = p; | |
1270 | p->sec = sec; | |
1271 | p->count = 0; | |
1272 | p->pc_count = 0; | |
a85d7ed0 | 1273 | } |
ec338859 AM |
1274 | |
1275 | p->count += 1; | |
1276 | if (ELF64_R_TYPE (rel->r_info) == R_390_PC16 | |
fb798c50 AK |
1277 | || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL |
1278 | || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL | |
ec338859 AM |
1279 | || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL |
1280 | || ELF64_R_TYPE (rel->r_info) == R_390_PC32 | |
1281 | || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL | |
1282 | || ELF64_R_TYPE (rel->r_info) == R_390_PC64) | |
1283 | p->pc_count += 1; | |
a85d7ed0 | 1284 | } |
a85d7ed0 | 1285 | break; |
ec338859 | 1286 | |
a85d7ed0 NC |
1287 | /* This relocation describes the C++ object vtable hierarchy. |
1288 | Reconstruct it for later use during GC. */ | |
947216bf | 1289 | case R_390_GNU_VTINHERIT: |
c152c796 | 1290 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 1291 | return FALSE; |
947216bf | 1292 | break; |
ec338859 | 1293 | |
a85d7ed0 NC |
1294 | /* This relocation describes which C++ vtable entries are actually |
1295 | used. Record for later use during GC. */ | |
947216bf | 1296 | case R_390_GNU_VTENTRY: |
d17e0c6e JB |
1297 | BFD_ASSERT (h != NULL); |
1298 | if (h != NULL | |
1299 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 1300 | return FALSE; |
947216bf | 1301 | break; |
ec338859 | 1302 | |
a85d7ed0 NC |
1303 | default: |
1304 | break; | |
1305 | } | |
1306 | } | |
1307 | ||
b34976b6 | 1308 | return TRUE; |
a85d7ed0 NC |
1309 | } |
1310 | ||
1311 | /* Return the section that should be marked against GC for a given | |
1312 | relocation. */ | |
1313 | ||
1314 | static asection * | |
07adf181 AM |
1315 | elf_s390_gc_mark_hook (asection *sec, |
1316 | struct bfd_link_info *info, | |
1317 | Elf_Internal_Rela *rel, | |
1318 | struct elf_link_hash_entry *h, | |
1319 | Elf_Internal_Sym *sym) | |
a85d7ed0 NC |
1320 | { |
1321 | if (h != NULL) | |
07adf181 AM |
1322 | switch (ELF64_R_TYPE (rel->r_info)) |
1323 | { | |
1324 | case R_390_GNU_VTINHERIT: | |
1325 | case R_390_GNU_VTENTRY: | |
1326 | return NULL; | |
1327 | } | |
1328 | ||
1329 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
a85d7ed0 NC |
1330 | } |
1331 | ||
5236c819 MS |
1332 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
1333 | entry but we found we will not create any. Called when we find we will | |
1334 | not have any PLT for this symbol, by for example | |
1335 | elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
1336 | or elf_s390_size_dynamic_sections if no dynamic sections will be | |
1337 | created (we're only linking static objects). */ | |
1338 | ||
1339 | static void | |
2c3fc389 | 1340 | elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h) |
5236c819 MS |
1341 | { |
1342 | if (h->elf.root.type == bfd_link_hash_warning) | |
1343 | h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link; | |
1344 | ||
1345 | if (h->gotplt_refcount <= 0) | |
1346 | return; | |
1347 | ||
1348 | /* We simply add the number of gotplt references to the number | |
1349 | * of got references for this symbol. */ | |
1350 | h->elf.got.refcount += h->gotplt_refcount; | |
1351 | h->gotplt_refcount = -1; | |
1352 | } | |
1353 | ||
63c1f59d AM |
1354 | /* Find dynamic relocs for H that apply to read-only sections. */ |
1355 | ||
1356 | static asection * | |
1357 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
1358 | { | |
1359 | struct elf_dyn_relocs *p; | |
1360 | ||
1361 | for (p = elf_s390_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
1362 | { | |
1363 | asection *s = p->sec->output_section; | |
1364 | ||
1365 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1366 | return p->sec; | |
1367 | } | |
1368 | return NULL; | |
1369 | } | |
1370 | ||
a85d7ed0 NC |
1371 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1372 | regular object. The current definition is in some section of the | |
1373 | dynamic object, but we're not including those sections. We have to | |
1374 | change the definition to something the rest of the link can | |
1375 | understand. */ | |
1376 | ||
b34976b6 | 1377 | static bfd_boolean |
4dfe6ac6 NC |
1378 | elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info, |
1379 | struct elf_link_hash_entry *h) | |
a85d7ed0 | 1380 | { |
0451c93c | 1381 | struct elf_s390_link_hash_table *htab; |
5474d94f | 1382 | asection *s, *srel; |
a85d7ed0 | 1383 | |
470b557a AK |
1384 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1385 | if (s390_is_ifunc_symbol_p (h)) | |
d8ee9e44 AK |
1386 | { |
1387 | /* All local STT_GNU_IFUNC references must be treated as local | |
1388 | calls via local PLT. */ | |
1389 | if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h)) | |
1390 | { | |
1391 | bfd_size_type pc_count = 0, count = 0; | |
1392 | struct elf_dyn_relocs **pp; | |
1393 | struct elf_s390_link_hash_entry *eh; | |
1394 | struct elf_dyn_relocs *p; | |
1395 | ||
1396 | eh = (struct elf_s390_link_hash_entry *) h; | |
1397 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1398 | { | |
1399 | pc_count += p->pc_count; | |
1400 | p->count -= p->pc_count; | |
1401 | p->pc_count = 0; | |
1402 | count += p->count; | |
1403 | if (p->count == 0) | |
1404 | *pp = p->next; | |
1405 | else | |
1406 | pp = &p->next; | |
1407 | } | |
1408 | ||
1409 | if (pc_count || count) | |
1410 | { | |
1411 | h->needs_plt = 1; | |
1412 | h->non_got_ref = 1; | |
1413 | if (h->plt.refcount <= 0) | |
1414 | h->plt.refcount = 1; | |
1415 | else | |
1416 | h->plt.refcount += 1; | |
1417 | } | |
1418 | } | |
1419 | ||
1420 | if (h->plt.refcount <= 0) | |
1421 | { | |
1422 | h->plt.offset = (bfd_vma) -1; | |
1423 | h->needs_plt = 0; | |
1424 | } | |
1425 | return TRUE; | |
1426 | } | |
470b557a | 1427 | |
a85d7ed0 NC |
1428 | /* If this is a function, put it in the procedure linkage table. We |
1429 | will fill in the contents of the procedure linkage table later | |
cedb70c5 | 1430 | (although we could actually do it here). */ |
a85d7ed0 | 1431 | if (h->type == STT_FUNC |
f5385ebf | 1432 | || h->needs_plt) |
a85d7ed0 | 1433 | { |
0451c93c | 1434 | if (h->plt.refcount <= 0 |
8c21ca21 | 1435 | || SYMBOL_CALLS_LOCAL (info, h) |
10e7c045 | 1436 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
a85d7ed0 NC |
1437 | { |
1438 | /* This case can occur if we saw a PLT32 reloc in an input | |
947216bf AM |
1439 | file, but the symbol was never referred to by a dynamic |
1440 | object, or if all references were garbage collected. In | |
0451c93c MS |
1441 | such a case, we don't actually need to build a procedure |
1442 | linkage table, and we can just do a PC32 reloc instead. */ | |
a85d7ed0 | 1443 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1444 | h->needs_plt = 0; |
5236c819 | 1445 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
a85d7ed0 NC |
1446 | } |
1447 | ||
b34976b6 | 1448 | return TRUE; |
a85d7ed0 | 1449 | } |
bbd7ec4a | 1450 | else |
0451c93c MS |
1451 | /* It's possible that we incorrectly decided a .plt reloc was |
1452 | needed for an R_390_PC32 reloc to a non-function sym in | |
1453 | check_relocs. We can't decide accurately between function and | |
1454 | non-function syms in check-relocs; Objects loaded later in | |
1455 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1456 | h->plt.offset = (bfd_vma) -1; |
a85d7ed0 NC |
1457 | |
1458 | /* If this is a weak symbol, and there is a real definition, the | |
1459 | processor independent code will have arranged for us to see the | |
1460 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 1461 | if (h->is_weakalias) |
a85d7ed0 | 1462 | { |
60d67dc8 AM |
1463 | struct elf_link_hash_entry *def = weakdef (h); |
1464 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
1465 | h->root.u.def.section = def->root.u.def.section; | |
1466 | h->root.u.def.value = def->root.u.def.value; | |
64285810 | 1467 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
60d67dc8 | 1468 | h->non_got_ref = def->non_got_ref; |
b34976b6 | 1469 | return TRUE; |
a85d7ed0 NC |
1470 | } |
1471 | ||
1472 | /* This is a reference to a symbol defined by a dynamic object which | |
1473 | is not a function. */ | |
1474 | ||
1475 | /* If we are creating a shared library, we must presume that the | |
1476 | only references to the symbol are via the global offset table. | |
1477 | For such cases we need not do anything here; the relocations will | |
1478 | be handled correctly by relocate_section. */ | |
0e1862bb | 1479 | if (bfd_link_pic (info)) |
b34976b6 | 1480 | return TRUE; |
a85d7ed0 NC |
1481 | |
1482 | /* If there are no references to this symbol that do not use the | |
1483 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 1484 | if (!h->non_got_ref) |
b34976b6 | 1485 | return TRUE; |
a85d7ed0 | 1486 | |
0451c93c MS |
1487 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1488 | if (info->nocopyreloc) | |
1489 | { | |
f5385ebf | 1490 | h->non_got_ref = 0; |
b34976b6 | 1491 | return TRUE; |
0451c93c MS |
1492 | } |
1493 | ||
3bf083ed AM |
1494 | /* If we don't find any dynamic relocs in read-only sections, then |
1495 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1496 | if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h)) | |
0451c93c | 1497 | { |
3bf083ed AM |
1498 | h->non_got_ref = 0; |
1499 | return TRUE; | |
0451c93c MS |
1500 | } |
1501 | ||
a85d7ed0 NC |
1502 | /* We must allocate the symbol in our .dynbss section, which will |
1503 | become part of the .bss section of the executable. There will be | |
1504 | an entry for this symbol in the .dynsym section. The dynamic | |
1505 | object will contain position independent code, so all references | |
1506 | from the dynamic object to this symbol will go through the global | |
1507 | offset table. The dynamic linker will use the .dynsym entry to | |
1508 | determine the address it must put in the global offset table, so | |
1509 | both the dynamic object and the regular object will refer to the | |
1510 | same memory location for the variable. */ | |
1511 | ||
0451c93c | 1512 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
1513 | if (htab == NULL) |
1514 | return FALSE; | |
a85d7ed0 | 1515 | |
0451c93c MS |
1516 | /* We must generate a R_390_COPY reloc to tell the dynamic linker to |
1517 | copy the initial value out of the dynamic object and into the | |
1518 | runtime process image. */ | |
5474d94f AM |
1519 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
1520 | { | |
1521 | s = htab->elf.sdynrelro; | |
1522 | srel = htab->elf.sreldynrelro; | |
1523 | } | |
1524 | else | |
1525 | { | |
1526 | s = htab->elf.sdynbss; | |
1527 | srel = htab->elf.srelbss; | |
1528 | } | |
1d7e9d18 | 1529 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
a85d7ed0 | 1530 | { |
5474d94f | 1531 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 1532 | h->needs_copy = 1; |
a85d7ed0 NC |
1533 | } |
1534 | ||
6cabe1ea | 1535 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a85d7ed0 NC |
1536 | } |
1537 | ||
0451c93c MS |
1538 | /* Allocate space in .plt, .got and associated reloc sections for |
1539 | dynamic relocs. */ | |
1540 | ||
b34976b6 | 1541 | static bfd_boolean |
4dfe6ac6 NC |
1542 | allocate_dynrelocs (struct elf_link_hash_entry *h, |
1543 | void * inf) | |
0451c93c MS |
1544 | { |
1545 | struct bfd_link_info *info; | |
1546 | struct elf_s390_link_hash_table *htab; | |
470b557a | 1547 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h; |
00d8c7a9 | 1548 | struct elf_dyn_relocs *p; |
0451c93c | 1549 | |
e92d460e | 1550 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1551 | return TRUE; |
0451c93c MS |
1552 | |
1553 | info = (struct bfd_link_info *) inf; | |
1554 | htab = elf_s390_hash_table (info); | |
4dfe6ac6 NC |
1555 | if (htab == NULL) |
1556 | return FALSE; | |
0451c93c | 1557 | |
470b557a AK |
1558 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
1559 | here if it is defined and referenced in a non-shared object. */ | |
1560 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
61643fba | 1561 | return s390_elf_allocate_ifunc_dyn_relocs (info, h); |
470b557a AK |
1562 | else if (htab->elf.dynamic_sections_created |
1563 | && h->plt.refcount > 0) | |
0451c93c MS |
1564 | { |
1565 | /* Make sure this symbol is output as a dynamic symbol. | |
1566 | Undefined weak syms won't yet be marked as dynamic. */ | |
1567 | if (h->dynindx == -1 | |
f5385ebf | 1568 | && !h->forced_local) |
0451c93c | 1569 | { |
c152c796 | 1570 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1571 | return FALSE; |
0451c93c MS |
1572 | } |
1573 | ||
0e1862bb | 1574 | if (bfd_link_pic (info) |
4ec72bde | 1575 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
0451c93c | 1576 | { |
f41345a7 | 1577 | asection *s = htab->elf.splt; |
0451c93c MS |
1578 | |
1579 | /* If this is the first .plt entry, make room for the special | |
1580 | first entry. */ | |
eea6121a AM |
1581 | if (s->size == 0) |
1582 | s->size += PLT_FIRST_ENTRY_SIZE; | |
0451c93c | 1583 | |
eea6121a | 1584 | h->plt.offset = s->size; |
0451c93c MS |
1585 | |
1586 | /* If this symbol is not defined in a regular file, and we are | |
1587 | not generating a shared library, then set the symbol to this | |
1588 | location in the .plt. This is required to make function | |
1589 | pointers compare as equal between the normal executable and | |
1590 | the shared library. */ | |
0e1862bb | 1591 | if (! bfd_link_pic (info) |
f5385ebf | 1592 | && !h->def_regular) |
0451c93c MS |
1593 | { |
1594 | h->root.u.def.section = s; | |
1595 | h->root.u.def.value = h->plt.offset; | |
1596 | } | |
ec338859 | 1597 | |
0451c93c | 1598 | /* Make room for this entry. */ |
eea6121a | 1599 | s->size += PLT_ENTRY_SIZE; |
ec338859 | 1600 | |
0451c93c MS |
1601 | /* We also need to make an entry in the .got.plt section, which |
1602 | will be placed in the .got section by the linker script. */ | |
f41345a7 | 1603 | htab->elf.sgotplt->size += GOT_ENTRY_SIZE; |
0451c93c MS |
1604 | |
1605 | /* We also need to make an entry in the .rela.plt section. */ | |
f41345a7 | 1606 | htab->elf.srelplt->size += sizeof (Elf64_External_Rela); |
0451c93c MS |
1607 | } |
1608 | else | |
1609 | { | |
1610 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1611 | h->needs_plt = 0; |
5236c819 | 1612 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c MS |
1613 | } |
1614 | } | |
1615 | else | |
1616 | { | |
1617 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1618 | h->needs_plt = 0; |
5236c819 | 1619 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c MS |
1620 | } |
1621 | ||
69fc87f1 MS |
1622 | /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to |
1623 | the binary, we can optimize a bit. IE64 and GOTIE64 get converted | |
1624 | to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT | |
1625 | we can save the dynamic TLS relocation. */ | |
1626 | if (h->got.refcount > 0 | |
0e1862bb | 1627 | && !bfd_link_pic (info) |
69fc87f1 MS |
1628 | && h->dynindx == -1 |
1629 | && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE) | |
1630 | { | |
1631 | if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT) | |
1632 | /* For the GOTIE access without a literal pool entry the offset has | |
1633 | to be stored somewhere. The immediate value in the instruction | |
1634 | is not bit enough so the value is stored in the got. */ | |
1635 | { | |
f41345a7 AK |
1636 | h->got.offset = htab->elf.sgot->size; |
1637 | htab->elf.sgot->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1638 | } |
1639 | else | |
1640 | h->got.offset = (bfd_vma) -1; | |
1641 | } | |
1642 | else if (h->got.refcount > 0) | |
0451c93c MS |
1643 | { |
1644 | asection *s; | |
b34976b6 | 1645 | bfd_boolean dyn; |
69fc87f1 | 1646 | int tls_type = elf_s390_hash_entry(h)->tls_type; |
0451c93c MS |
1647 | |
1648 | /* Make sure this symbol is output as a dynamic symbol. | |
1649 | Undefined weak syms won't yet be marked as dynamic. */ | |
1650 | if (h->dynindx == -1 | |
f5385ebf | 1651 | && !h->forced_local) |
0451c93c | 1652 | { |
c152c796 | 1653 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1654 | return FALSE; |
0451c93c MS |
1655 | } |
1656 | ||
f41345a7 | 1657 | s = htab->elf.sgot; |
eea6121a AM |
1658 | h->got.offset = s->size; |
1659 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1660 | /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */ |
1661 | if (tls_type == GOT_TLS_GD) | |
eea6121a | 1662 | s->size += GOT_ENTRY_SIZE; |
0451c93c | 1663 | dyn = htab->elf.dynamic_sections_created; |
69fc87f1 MS |
1664 | /* R_390_TLS_IE64 needs one dynamic relocation, |
1665 | R_390_TLS_GD64 needs one if local symbol and two if global. */ | |
1666 | if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1667 | || tls_type >= GOT_TLS_IE) | |
f41345a7 | 1668 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); |
69fc87f1 | 1669 | else if (tls_type == GOT_TLS_GD) |
f41345a7 | 1670 | htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela); |
10e7c045 | 1671 | else if (!UNDEFWEAK_NO_DYNAMIC_RELOC (info, h) |
0e1862bb | 1672 | && (bfd_link_pic (info) |
82058a73 | 1673 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
f41345a7 | 1674 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); |
0451c93c MS |
1675 | } |
1676 | else | |
1677 | h->got.offset = (bfd_vma) -1; | |
1678 | ||
0451c93c | 1679 | if (eh->dyn_relocs == NULL) |
b34976b6 | 1680 | return TRUE; |
0451c93c MS |
1681 | |
1682 | /* In the shared -Bsymbolic case, discard space allocated for | |
1683 | dynamic pc-relative relocs against symbols which turn out to be | |
1684 | defined in regular objects. For the normal shared case, discard | |
1685 | space for pc-relative relocs that have become local due to symbol | |
1686 | visibility changes. */ | |
1687 | ||
0e1862bb | 1688 | if (bfd_link_pic (info)) |
0451c93c | 1689 | { |
8c21ca21 | 1690 | if (SYMBOL_CALLS_LOCAL (info, h)) |
0451c93c | 1691 | { |
00d8c7a9 | 1692 | struct elf_dyn_relocs **pp; |
0451c93c MS |
1693 | |
1694 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1695 | { | |
1696 | p->count -= p->pc_count; | |
1697 | p->pc_count = 0; | |
1698 | if (p->count == 0) | |
1699 | *pp = p->next; | |
1700 | else | |
1701 | pp = &p->next; | |
1702 | } | |
1703 | } | |
82058a73 MS |
1704 | |
1705 | /* Also discard relocs on undefined weak syms with non-default | |
1706 | visibility. */ | |
22d606e9 | 1707 | if (eh->dyn_relocs != NULL |
82058a73 | 1708 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 | 1709 | { |
b27bb18f L |
1710 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
1711 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
22d606e9 AM |
1712 | eh->dyn_relocs = NULL; |
1713 | ||
1714 | /* Make sure undefined weak symbols are output as a dynamic | |
1715 | symbol in PIEs. */ | |
1716 | else if (h->dynindx == -1 | |
1717 | && !h->forced_local) | |
1718 | { | |
1719 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1720 | return FALSE; | |
1721 | } | |
1722 | } | |
0451c93c | 1723 | } |
64285810 | 1724 | else if (ELIMINATE_COPY_RELOCS) |
0451c93c MS |
1725 | { |
1726 | /* For the non-shared case, discard space for relocs against | |
1727 | symbols which turn out to need copy relocs or are not | |
1728 | dynamic. */ | |
1729 | ||
f5385ebf AM |
1730 | if (!h->non_got_ref |
1731 | && ((h->def_dynamic | |
1732 | && !h->def_regular) | |
0451c93c MS |
1733 | || (htab->elf.dynamic_sections_created |
1734 | && (h->root.type == bfd_link_hash_undefweak | |
1735 | || h->root.type == bfd_link_hash_undefined)))) | |
1736 | { | |
1737 | /* Make sure this symbol is output as a dynamic symbol. | |
1738 | Undefined weak syms won't yet be marked as dynamic. */ | |
1739 | if (h->dynindx == -1 | |
f5385ebf | 1740 | && !h->forced_local) |
0451c93c | 1741 | { |
c152c796 | 1742 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1743 | return FALSE; |
0451c93c MS |
1744 | } |
1745 | ||
1746 | /* If that succeeded, we know we'll be keeping all the | |
1747 | relocs. */ | |
1748 | if (h->dynindx != -1) | |
1749 | goto keep; | |
1750 | } | |
1751 | ||
1752 | eh->dyn_relocs = NULL; | |
1753 | ||
ec338859 | 1754 | keep: ; |
0451c93c MS |
1755 | } |
1756 | ||
1757 | /* Finally, allocate space. */ | |
1758 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1759 | { | |
1760 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 1761 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
0451c93c MS |
1762 | } |
1763 | ||
b34976b6 | 1764 | return TRUE; |
0451c93c MS |
1765 | } |
1766 | ||
63c1f59d AM |
1767 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
1768 | read-only sections. */ | |
0451c93c | 1769 | |
b34976b6 | 1770 | static bfd_boolean |
63c1f59d | 1771 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
0451c93c | 1772 | { |
63c1f59d | 1773 | asection *sec; |
0451c93c | 1774 | |
63c1f59d AM |
1775 | if (h->root.type == bfd_link_hash_indirect) |
1776 | return TRUE; | |
0451c93c | 1777 | |
63c1f59d AM |
1778 | sec = readonly_dynrelocs (h); |
1779 | if (sec != NULL) | |
1780 | { | |
1781 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; | |
0451c93c | 1782 | |
63c1f59d AM |
1783 | info->flags |= DF_TEXTREL; |
1784 | info->callbacks->minfo | |
1785 | (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"), | |
1786 | sec->owner, h->root.root.string, sec); | |
0451c93c | 1787 | |
63c1f59d AM |
1788 | /* Not an error, just cut short the traversal. */ |
1789 | return FALSE; | |
0451c93c | 1790 | } |
b34976b6 | 1791 | return TRUE; |
0451c93c MS |
1792 | } |
1793 | ||
a85d7ed0 NC |
1794 | /* Set the sizes of the dynamic sections. */ |
1795 | ||
b34976b6 | 1796 | static bfd_boolean |
4dfe6ac6 NC |
1797 | elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
1798 | struct bfd_link_info *info) | |
a85d7ed0 | 1799 | { |
0451c93c | 1800 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
1801 | bfd *dynobj; |
1802 | asection *s; | |
b34976b6 | 1803 | bfd_boolean relocs; |
0451c93c | 1804 | bfd *ibfd; |
a85d7ed0 | 1805 | |
0451c93c | 1806 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
1807 | if (htab == NULL) |
1808 | return FALSE; | |
1809 | ||
0451c93c MS |
1810 | dynobj = htab->elf.dynobj; |
1811 | if (dynobj == NULL) | |
1812 | abort (); | |
a85d7ed0 | 1813 | |
0451c93c | 1814 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
1815 | { |
1816 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 1817 | if (bfd_link_executable (info) && !info->nointerp) |
a85d7ed0 | 1818 | { |
3d4d4302 | 1819 | s = bfd_get_linker_section (dynobj, ".interp"); |
0451c93c MS |
1820 | if (s == NULL) |
1821 | abort (); | |
eea6121a | 1822 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
a85d7ed0 NC |
1823 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1824 | } | |
1825 | } | |
a85d7ed0 | 1826 | |
0451c93c MS |
1827 | /* Set up .got offsets for local syms, and space for local dynamic |
1828 | relocs. */ | |
c72f2fb2 | 1829 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a85d7ed0 | 1830 | { |
0451c93c MS |
1831 | bfd_signed_vma *local_got; |
1832 | bfd_signed_vma *end_local_got; | |
69fc87f1 | 1833 | char *local_tls_type; |
0451c93c MS |
1834 | bfd_size_type locsymcount; |
1835 | Elf_Internal_Shdr *symtab_hdr; | |
1836 | asection *srela; | |
470b557a AK |
1837 | struct plt_entry *local_plt; |
1838 | unsigned int i; | |
a85d7ed0 | 1839 | |
0ffa91dd | 1840 | if (! is_s390_elf (ibfd)) |
a85d7ed0 NC |
1841 | continue; |
1842 | ||
0451c93c | 1843 | for (s = ibfd->sections; s != NULL; s = s->next) |
a85d7ed0 | 1844 | { |
00d8c7a9 | 1845 | struct elf_dyn_relocs *p; |
0451c93c | 1846 | |
6edfbbad | 1847 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
a85d7ed0 | 1848 | { |
ec338859 AM |
1849 | if (!bfd_is_abs_section (p->sec) |
1850 | && bfd_is_abs_section (p->sec->output_section)) | |
1851 | { | |
1852 | /* Input section has been discarded, either because | |
1853 | it is a copy of a linkonce section or due to | |
1854 | linker script /DISCARD/, so we'll be discarding | |
1855 | the relocs too. */ | |
1856 | } | |
248866a8 | 1857 | else if (p->count != 0) |
ec338859 AM |
1858 | { |
1859 | srela = elf_section_data (p->sec)->sreloc; | |
eea6121a | 1860 | srela->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
1861 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
1862 | info->flags |= DF_TEXTREL; | |
ec338859 | 1863 | } |
a85d7ed0 NC |
1864 | } |
1865 | } | |
0451c93c MS |
1866 | |
1867 | local_got = elf_local_got_refcounts (ibfd); | |
1868 | if (!local_got) | |
1869 | continue; | |
1870 | ||
0ffa91dd | 1871 | symtab_hdr = &elf_symtab_hdr (ibfd); |
0451c93c MS |
1872 | locsymcount = symtab_hdr->sh_info; |
1873 | end_local_got = local_got + locsymcount; | |
69fc87f1 | 1874 | local_tls_type = elf_s390_local_got_tls_type (ibfd); |
f41345a7 AK |
1875 | s = htab->elf.sgot; |
1876 | srela = htab->elf.srelgot; | |
69fc87f1 | 1877 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
a85d7ed0 | 1878 | { |
0451c93c | 1879 | if (*local_got > 0) |
a85d7ed0 | 1880 | { |
eea6121a AM |
1881 | *local_got = s->size; |
1882 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 | 1883 | if (*local_tls_type == GOT_TLS_GD) |
eea6121a | 1884 | s->size += GOT_ENTRY_SIZE; |
0e1862bb | 1885 | if (bfd_link_pic (info)) |
eea6121a | 1886 | srela->size += sizeof (Elf64_External_Rela); |
a85d7ed0 NC |
1887 | } |
1888 | else | |
0451c93c | 1889 | *local_got = (bfd_vma) -1; |
a85d7ed0 | 1890 | } |
470b557a AK |
1891 | |
1892 | local_plt = elf_s390_local_plt (ibfd); | |
1893 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
1894 | { | |
1895 | if (local_plt[i].plt.refcount > 0) | |
1896 | { | |
1897 | local_plt[i].plt.offset = htab->elf.iplt->size; | |
1898 | htab->elf.iplt->size += PLT_ENTRY_SIZE; | |
1899 | htab->elf.igotplt->size += GOT_ENTRY_SIZE; | |
1900 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
1901 | } | |
1902 | else | |
1903 | local_plt[i].plt.offset = (bfd_vma) -1; | |
1904 | } | |
0451c93c MS |
1905 | } |
1906 | ||
69fc87f1 MS |
1907 | if (htab->tls_ldm_got.refcount > 0) |
1908 | { | |
1909 | /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64 | |
1910 | relocs. */ | |
f41345a7 AK |
1911 | htab->tls_ldm_got.offset = htab->elf.sgot->size; |
1912 | htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE; | |
1913 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); | |
69fc87f1 MS |
1914 | } |
1915 | else | |
1916 | htab->tls_ldm_got.offset = -1; | |
1917 | ||
0451c93c MS |
1918 | /* Allocate global sym .plt and .got entries, and space for global |
1919 | sym dynamic relocs. */ | |
2c3fc389 | 1920 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
0451c93c MS |
1921 | |
1922 | /* We now have determined the sizes of the various dynamic sections. | |
1923 | Allocate memory for them. */ | |
b34976b6 | 1924 | relocs = FALSE; |
0451c93c MS |
1925 | for (s = dynobj->sections; s != NULL; s = s->next) |
1926 | { | |
1927 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1928 | continue; | |
1929 | ||
f41345a7 AK |
1930 | if (s == htab->elf.splt |
1931 | || s == htab->elf.sgot | |
1932 | || s == htab->elf.sgotplt | |
9d19e4fd | 1933 | || s == htab->elf.sdynbss |
5474d94f | 1934 | || s == htab->elf.sdynrelro |
470b557a AK |
1935 | || s == htab->elf.iplt |
1936 | || s == htab->elf.igotplt | |
1937 | || s == htab->irelifunc) | |
0451c93c MS |
1938 | { |
1939 | /* Strip this section if we don't need it; see the | |
1940 | comment below. */ | |
1941 | } | |
0112cd26 | 1942 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
0451c93c | 1943 | { |
f41345a7 | 1944 | if (s->size != 0 && s != htab->elf.srelplt) |
b34976b6 | 1945 | relocs = TRUE; |
ec338859 | 1946 | |
0451c93c MS |
1947 | /* We use the reloc_count field as a counter if we need |
1948 | to copy relocs into the output file. */ | |
1949 | s->reloc_count = 0; | |
1950 | } | |
1951 | else | |
a85d7ed0 NC |
1952 | { |
1953 | /* It's not one of our sections, so don't allocate space. */ | |
1954 | continue; | |
1955 | } | |
1956 | ||
eea6121a | 1957 | if (s->size == 0) |
a85d7ed0 | 1958 | { |
0451c93c MS |
1959 | /* If we don't need this section, strip it from the |
1960 | output file. This is to handle .rela.bss and | |
1961 | .rela.plt. We must create it in | |
1962 | create_dynamic_sections, because it must be created | |
1963 | before the linker maps input sections to output | |
1964 | sections. The linker does that before | |
1965 | adjust_dynamic_symbol is called, and it is that | |
1966 | function which decides whether anything needs to go | |
1967 | into these sections. */ | |
1968 | ||
8423293d | 1969 | s->flags |= SEC_EXCLUDE; |
a85d7ed0 NC |
1970 | continue; |
1971 | } | |
1972 | ||
c456f082 AM |
1973 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1974 | continue; | |
1975 | ||
0451c93c MS |
1976 | /* Allocate memory for the section contents. We use bfd_zalloc |
1977 | here in case unused entries are not reclaimed before the | |
1978 | section's contents are written out. This should not happen, | |
1979 | but this way if it does, we get a R_390_NONE reloc instead | |
1980 | of garbage. */ | |
eea6121a | 1981 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
0451c93c | 1982 | if (s->contents == NULL) |
b34976b6 | 1983 | return FALSE; |
a85d7ed0 NC |
1984 | } |
1985 | ||
0451c93c | 1986 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
1987 | { |
1988 | /* Add some entries to the .dynamic section. We fill in the | |
1989 | values later, in elf_s390_finish_dynamic_sections, but we | |
1990 | must add the entries now so that we get the correct size for | |
1991 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1992 | dynamic linker and used by the debugger. */ | |
dc810e39 | 1993 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 1994 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 1995 | |
0e1862bb | 1996 | if (bfd_link_executable (info)) |
a85d7ed0 | 1997 | { |
dc810e39 | 1998 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 1999 | return FALSE; |
a85d7ed0 NC |
2000 | } |
2001 | ||
f41345a7 | 2002 | if (htab->elf.splt->size != 0) |
a85d7ed0 | 2003 | { |
dc810e39 AM |
2004 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2005 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2006 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2007 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2008 | return FALSE; |
a85d7ed0 NC |
2009 | } |
2010 | ||
2011 | if (relocs) | |
947216bf AM |
2012 | { |
2013 | if (!add_dynamic_entry (DT_RELA, 0) | |
2014 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2015 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 2016 | return FALSE; |
ec338859 | 2017 | |
0451c93c MS |
2018 | /* If any dynamic relocs apply to a read-only section, |
2019 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 2020 | if ((info->flags & DF_TEXTREL) == 0) |
63c1f59d | 2021 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
ec338859 | 2022 | |
0451c93c MS |
2023 | if ((info->flags & DF_TEXTREL) != 0) |
2024 | { | |
2025 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2026 | return FALSE; |
0451c93c | 2027 | } |
a85d7ed0 NC |
2028 | } |
2029 | } | |
dc810e39 | 2030 | #undef add_dynamic_entry |
a85d7ed0 | 2031 | |
b34976b6 | 2032 | return TRUE; |
a85d7ed0 NC |
2033 | } |
2034 | ||
69fc87f1 MS |
2035 | /* Return the base VMA address which should be subtracted from real addresses |
2036 | when resolving @dtpoff relocation. | |
2037 | This is PT_TLS segment p_vaddr. */ | |
2038 | ||
2039 | static bfd_vma | |
2c3fc389 | 2040 | dtpoff_base (struct bfd_link_info *info) |
69fc87f1 | 2041 | { |
e1918d23 AM |
2042 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2043 | if (elf_hash_table (info)->tls_sec == NULL) | |
69fc87f1 | 2044 | return 0; |
e1918d23 | 2045 | return elf_hash_table (info)->tls_sec->vma; |
69fc87f1 MS |
2046 | } |
2047 | ||
2048 | /* Return the relocation value for @tpoff relocation | |
2049 | if STT_TLS virtual address is ADDRESS. */ | |
2050 | ||
2051 | static bfd_vma | |
2c3fc389 | 2052 | tpoff (struct bfd_link_info *info, bfd_vma address) |
69fc87f1 | 2053 | { |
e1918d23 | 2054 | struct elf_link_hash_table *htab = elf_hash_table (info); |
69fc87f1 | 2055 | |
e1918d23 AM |
2056 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2057 | if (htab->tls_sec == NULL) | |
69fc87f1 | 2058 | return 0; |
e1918d23 | 2059 | return htab->tls_size + htab->tls_sec->vma - address; |
69fc87f1 MS |
2060 | } |
2061 | ||
2062 | /* Complain if TLS instruction relocation is against an invalid | |
2063 | instruction. */ | |
2064 | ||
2065 | static void | |
2c3fc389 NC |
2066 | invalid_tls_insn (bfd *input_bfd, |
2067 | asection *input_section, | |
2068 | Elf_Internal_Rela *rel) | |
69fc87f1 MS |
2069 | { |
2070 | reloc_howto_type *howto; | |
2071 | ||
2072 | howto = elf_howto_table + ELF64_R_TYPE (rel->r_info); | |
4eca0228 | 2073 | _bfd_error_handler |
695344c0 | 2074 | /* xgettext:c-format */ |
d42c267e | 2075 | (_("%B(%A+%#Lx): invalid instruction for TLS relocation %s"), |
d003868e AM |
2076 | input_bfd, |
2077 | input_section, | |
d42c267e | 2078 | rel->r_offset, |
69fc87f1 | 2079 | howto->name); |
77df2968 | 2080 | bfd_set_error (bfd_error_bad_value); |
69fc87f1 MS |
2081 | } |
2082 | ||
a85d7ed0 NC |
2083 | /* Relocate a 390 ELF section. */ |
2084 | ||
b34976b6 | 2085 | static bfd_boolean |
4dfe6ac6 NC |
2086 | elf_s390_relocate_section (bfd *output_bfd, |
2087 | struct bfd_link_info *info, | |
2088 | bfd *input_bfd, | |
2089 | asection *input_section, | |
2090 | bfd_byte *contents, | |
2091 | Elf_Internal_Rela *relocs, | |
2092 | Elf_Internal_Sym *local_syms, | |
2093 | asection **local_sections) | |
a85d7ed0 | 2094 | { |
0451c93c | 2095 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
2096 | Elf_Internal_Shdr *symtab_hdr; |
2097 | struct elf_link_hash_entry **sym_hashes; | |
2098 | bfd_vma *local_got_offsets; | |
a85d7ed0 NC |
2099 | Elf_Internal_Rela *rel; |
2100 | Elf_Internal_Rela *relend; | |
2101 | ||
0ffa91dd NC |
2102 | BFD_ASSERT (is_s390_elf (input_bfd)); |
2103 | ||
0451c93c | 2104 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
2105 | if (htab == NULL) |
2106 | return FALSE; | |
2107 | ||
0ffa91dd | 2108 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
a85d7ed0 NC |
2109 | sym_hashes = elf_sym_hashes (input_bfd); |
2110 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2111 | ||
a85d7ed0 NC |
2112 | rel = relocs; |
2113 | relend = relocs + input_section->reloc_count; | |
2114 | for (; rel < relend; rel++) | |
2115 | { | |
5236c819 | 2116 | unsigned int r_type; |
a85d7ed0 NC |
2117 | reloc_howto_type *howto; |
2118 | unsigned long r_symndx; | |
2119 | struct elf_link_hash_entry *h; | |
2120 | Elf_Internal_Sym *sym; | |
2121 | asection *sec; | |
0451c93c | 2122 | bfd_vma off; |
a85d7ed0 | 2123 | bfd_vma relocation; |
b34976b6 | 2124 | bfd_boolean unresolved_reloc; |
a85d7ed0 | 2125 | bfd_reloc_status_type r; |
69fc87f1 | 2126 | int tls_type; |
470b557a | 2127 | asection *base_got = htab->elf.sgot; |
b27bb18f | 2128 | bfd_boolean resolved_to_zero; |
a85d7ed0 NC |
2129 | |
2130 | r_type = ELF64_R_TYPE (rel->r_info); | |
0451c93c | 2131 | if (r_type == (int) R_390_GNU_VTINHERIT |
947216bf AM |
2132 | || r_type == (int) R_390_GNU_VTENTRY) |
2133 | continue; | |
5236c819 | 2134 | if (r_type >= (int) R_390_max) |
a85d7ed0 NC |
2135 | { |
2136 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2137 | return FALSE; |
a85d7ed0 | 2138 | } |
a85d7ed0 | 2139 | |
b491616a | 2140 | howto = elf_howto_table + r_type; |
a85d7ed0 | 2141 | r_symndx = ELF64_R_SYM (rel->r_info); |
5236c819 | 2142 | |
a85d7ed0 NC |
2143 | h = NULL; |
2144 | sym = NULL; | |
2145 | sec = NULL; | |
b34976b6 | 2146 | unresolved_reloc = FALSE; |
a85d7ed0 NC |
2147 | if (r_symndx < symtab_hdr->sh_info) |
2148 | { | |
2149 | sym = local_syms + r_symndx; | |
2150 | sec = local_sections[r_symndx]; | |
470b557a AK |
2151 | |
2152 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
2153 | { | |
2154 | struct plt_entry *local_plt = elf_s390_local_plt (input_bfd); | |
2155 | if (local_plt == NULL) | |
2156 | return FALSE; | |
2157 | ||
2158 | /* Address of the PLT slot. */ | |
2159 | relocation = (htab->elf.iplt->output_section->vma | |
2160 | + htab->elf.iplt->output_offset | |
2161 | + local_plt[r_symndx].plt.offset); | |
2162 | ||
2163 | switch (r_type) | |
2164 | { | |
31db78f6 AK |
2165 | case R_390_PLTOFF16: |
2166 | case R_390_PLTOFF32: | |
2167 | case R_390_PLTOFF64: | |
2168 | relocation -= htab->elf.sgot->output_section->vma; | |
2169 | break; | |
470b557a AK |
2170 | case R_390_GOTPLT12: |
2171 | case R_390_GOTPLT16: | |
2172 | case R_390_GOTPLT20: | |
2173 | case R_390_GOTPLT32: | |
2174 | case R_390_GOTPLT64: | |
2175 | case R_390_GOTPLTENT: | |
2176 | case R_390_GOT12: | |
2177 | case R_390_GOT16: | |
2178 | case R_390_GOT20: | |
2179 | case R_390_GOT32: | |
2180 | case R_390_GOT64: | |
2181 | case R_390_GOTENT: | |
2182 | { | |
2183 | /* Write the PLT slot address into the GOT slot. */ | |
2184 | bfd_put_64 (output_bfd, relocation, | |
2185 | htab->elf.sgot->contents + | |
2186 | local_got_offsets[r_symndx]); | |
2187 | relocation = (local_got_offsets[r_symndx] + | |
2188 | htab->elf.sgot->output_offset); | |
2189 | ||
2190 | if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT) | |
2191 | relocation += htab->elf.sgot->output_section->vma; | |
2192 | break; | |
2193 | } | |
2194 | default: | |
2195 | break; | |
2196 | } | |
2197 | /* The output section is needed later in | |
2198 | finish_dynamic_section when creating the dynamic | |
2199 | relocation. */ | |
2200 | local_plt[r_symndx].sec = sec; | |
2201 | goto do_relocation; | |
2202 | } | |
2203 | else | |
2204 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
a85d7ed0 NC |
2205 | } |
2206 | else | |
2207 | { | |
560e09e9 | 2208 | bfd_boolean warned ATTRIBUTE_UNUSED; |
62d887d4 | 2209 | bfd_boolean ignored ATTRIBUTE_UNUSED; |
0451c93c | 2210 | |
b2a8e766 AM |
2211 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2212 | r_symndx, symtab_hdr, sym_hashes, | |
2213 | h, sec, relocation, | |
62d887d4 | 2214 | unresolved_reloc, warned, ignored); |
a85d7ed0 NC |
2215 | } |
2216 | ||
dbaa2011 | 2217 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 2218 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 2219 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 2220 | |
0e1862bb | 2221 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
2222 | continue; |
2223 | ||
b27bb18f L |
2224 | resolved_to_zero = (h != NULL |
2225 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
2226 | ||
a85d7ed0 NC |
2227 | switch (r_type) |
2228 | { | |
5236c819 MS |
2229 | case R_390_GOTPLT12: |
2230 | case R_390_GOTPLT16: | |
bd1ea41b | 2231 | case R_390_GOTPLT20: |
5236c819 MS |
2232 | case R_390_GOTPLT32: |
2233 | case R_390_GOTPLT64: | |
2234 | case R_390_GOTPLTENT: | |
2235 | /* There are three cases for a GOTPLT relocation. 1) The | |
2236 | relocation is against the jump slot entry of a plt that | |
2237 | will get emitted to the output file. 2) The relocation | |
2238 | is against the jump slot of a plt entry that has been | |
2239 | removed. elf_s390_adjust_gotplt has created a GOT entry | |
2240 | as replacement. 3) The relocation is against a local symbol. | |
2241 | Cases 2) and 3) are the same as the GOT relocation code | |
2242 | so we just have to test for case 1 and fall through for | |
2243 | the other two. */ | |
2244 | if (h != NULL && h->plt.offset != (bfd_vma) -1) | |
2245 | { | |
2246 | bfd_vma plt_index; | |
2247 | ||
470b557a AK |
2248 | if (s390_is_ifunc_symbol_p (h)) |
2249 | { | |
2250 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; | |
2251 | relocation = (plt_index * GOT_ENTRY_SIZE + | |
2252 | htab->elf.igotplt->output_offset); | |
2253 | if (r_type == R_390_GOTPLTENT) | |
2254 | relocation += htab->elf.igotplt->output_section->vma; | |
2255 | } | |
2256 | else | |
2257 | { | |
2258 | /* Calc. index no. | |
2259 | Current offset - size first entry / entry size. */ | |
2260 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / | |
2261 | PLT_ENTRY_SIZE; | |
2262 | ||
2263 | /* Offset in GOT is PLT index plus GOT headers(3) | |
3b67f094 | 2264 | times 8, addr & GOT addr. */ |
470b557a AK |
2265 | relocation = (plt_index + 3) * GOT_ENTRY_SIZE; |
2266 | if (r_type == R_390_GOTPLTENT) | |
2267 | relocation += htab->elf.sgot->output_section->vma; | |
2268 | } | |
5236c819 | 2269 | unresolved_reloc = FALSE; |
5236c819 MS |
2270 | break; |
2271 | } | |
2272 | /* Fall through. */ | |
2273 | ||
947216bf AM |
2274 | case R_390_GOT12: |
2275 | case R_390_GOT16: | |
bd1ea41b | 2276 | case R_390_GOT20: |
947216bf AM |
2277 | case R_390_GOT32: |
2278 | case R_390_GOT64: | |
2279 | case R_390_GOTENT: | |
2280 | /* Relocation is to the entry for this symbol in the global | |
2281 | offset table. */ | |
470b557a | 2282 | if (base_got == NULL) |
0451c93c | 2283 | abort (); |
a85d7ed0 | 2284 | |
947216bf AM |
2285 | if (h != NULL) |
2286 | { | |
b34976b6 | 2287 | bfd_boolean dyn; |
a85d7ed0 | 2288 | |
947216bf | 2289 | off = h->got.offset; |
0451c93c | 2290 | dyn = htab->elf.dynamic_sections_created; |
470b557a AK |
2291 | |
2292 | if (s390_is_ifunc_symbol_p (h)) | |
2293 | { | |
2294 | BFD_ASSERT (h->plt.offset != (bfd_vma) -1); | |
2295 | if (off == (bfd_vma)-1) | |
2296 | { | |
2297 | /* No explicit GOT usage so redirect to the | |
2298 | got.iplt slot. */ | |
2299 | base_got = htab->elf.igotplt; | |
2300 | off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE; | |
2301 | } | |
2302 | else | |
2303 | { | |
2304 | /* Explicit GOT slots must contain the address | |
2305 | of the PLT slot. This will be handled in | |
2306 | finish_dynamic_symbol. */ | |
2307 | } | |
2308 | } | |
0e1862bb L |
2309 | else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
2310 | bfd_link_pic (info), | |
2311 | h) | |
2312 | || (bfd_link_pic (info) | |
470b557a | 2313 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
10e7c045 | 2314 | || resolved_to_zero) |
947216bf AM |
2315 | { |
2316 | /* This is actually a static link, or it is a | |
2317 | -Bsymbolic link and the symbol is defined | |
2318 | locally, or the symbol was forced to be local | |
2319 | because of a version file. We must initialize | |
2320 | this entry in the global offset table. Since the | |
2321 | offset must always be a multiple of 2, we use the | |
2322 | least significant bit to record whether we have | |
2323 | initialized it already. | |
2324 | ||
2325 | When doing a dynamic link, we create a .rel.got | |
2326 | relocation entry to initialize the value. This | |
2327 | is done in the finish_dynamic_symbol routine. */ | |
2328 | if ((off & 1) != 0) | |
2329 | off &= ~1; | |
2330 | else | |
2331 | { | |
a85d7ed0 | 2332 | bfd_put_64 (output_bfd, relocation, |
470b557a | 2333 | base_got->contents + off); |
947216bf AM |
2334 | h->got.offset |= 1; |
2335 | } | |
a63cc5f7 AK |
2336 | |
2337 | if ((h->def_regular | |
0e1862bb | 2338 | && bfd_link_pic (info) |
a63cc5f7 AK |
2339 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
2340 | /* lgrl rx,sym@GOTENT -> larl rx, sym */ | |
2341 | && ((r_type == R_390_GOTENT | |
2342 | && (bfd_get_16 (input_bfd, | |
2343 | contents + rel->r_offset - 2) | |
2344 | & 0xff0f) == 0xc408) | |
2345 | /* lg rx, sym@GOT(r12) -> larl rx, sym */ | |
2346 | || (r_type == R_390_GOT20 | |
2347 | && (bfd_get_32 (input_bfd, | |
2348 | contents + rel->r_offset - 2) | |
2349 | & 0xff00f000) == 0xe300c000 | |
2350 | && bfd_get_8 (input_bfd, | |
2351 | contents + rel->r_offset + 3) == 0x04))) | |
2352 | ||
2353 | { | |
2354 | unsigned short new_insn = | |
2355 | (0xc000 | (bfd_get_8 (input_bfd, | |
2356 | contents + rel->r_offset - 1) & 0xf0)); | |
2357 | bfd_put_16 (output_bfd, new_insn, | |
2358 | contents + rel->r_offset - 2); | |
2359 | r_type = R_390_PC32DBL; | |
2360 | rel->r_addend = 2; | |
2361 | howto = elf_howto_table + r_type; | |
2362 | relocation = h->root.u.def.value | |
2363 | + h->root.u.def.section->output_section->vma | |
2364 | + h->root.u.def.section->output_offset; | |
2365 | goto do_relocation; | |
2366 | } | |
947216bf | 2367 | } |
0451c93c | 2368 | else |
b34976b6 | 2369 | unresolved_reloc = FALSE; |
947216bf AM |
2370 | } |
2371 | else | |
2372 | { | |
0451c93c MS |
2373 | if (local_got_offsets == NULL) |
2374 | abort (); | |
a85d7ed0 | 2375 | |
947216bf | 2376 | off = local_got_offsets[r_symndx]; |
a85d7ed0 | 2377 | |
947216bf AM |
2378 | /* The offset must always be a multiple of 8. We use |
2379 | the least significant bit to record whether we have | |
2380 | already generated the necessary reloc. */ | |
2381 | if ((off & 1) != 0) | |
2382 | off &= ~1; | |
2383 | else | |
2384 | { | |
2385 | bfd_put_64 (output_bfd, relocation, | |
f41345a7 | 2386 | htab->elf.sgot->contents + off); |
a85d7ed0 | 2387 | |
0e1862bb | 2388 | if (bfd_link_pic (info)) |
947216bf AM |
2389 | { |
2390 | asection *s; | |
2391 | Elf_Internal_Rela outrel; | |
2392 | bfd_byte *loc; | |
a85d7ed0 | 2393 | |
f41345a7 | 2394 | s = htab->elf.srelgot; |
947216bf | 2395 | if (s == NULL) |
0451c93c | 2396 | abort (); |
a85d7ed0 | 2397 | |
f41345a7 AK |
2398 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2399 | + htab->elf.sgot->output_offset | |
947216bf AM |
2400 | + off); |
2401 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); | |
a85d7ed0 | 2402 | outrel.r_addend = relocation; |
947216bf AM |
2403 | loc = s->contents; |
2404 | loc += s->reloc_count++ * sizeof (Elf64_External_Rela); | |
2405 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2406 | } | |
a85d7ed0 | 2407 | |
947216bf AM |
2408 | local_got_offsets[r_symndx] |= 1; |
2409 | } | |
2410 | } | |
a85d7ed0 | 2411 | |
0451c93c MS |
2412 | if (off >= (bfd_vma) -2) |
2413 | abort (); | |
2414 | ||
470b557a | 2415 | relocation = base_got->output_offset + off; |
0451c93c | 2416 | |
ae9a127f NC |
2417 | /* For @GOTENT the relocation is against the offset between |
2418 | the instruction and the symbols entry in the GOT and not | |
2419 | between the start of the GOT and the symbols entry. We | |
2420 | add the vma of the GOT to get the correct value. */ | |
5236c819 MS |
2421 | if ( r_type == R_390_GOTENT |
2422 | || r_type == R_390_GOTPLTENT) | |
470b557a | 2423 | relocation += base_got->output_section->vma; |
a85d7ed0 | 2424 | |
947216bf | 2425 | break; |
99c79b2e | 2426 | |
5236c819 MS |
2427 | case R_390_GOTOFF16: |
2428 | case R_390_GOTOFF32: | |
2429 | case R_390_GOTOFF64: | |
947216bf AM |
2430 | /* Relocation is relative to the start of the global offset |
2431 | table. */ | |
a85d7ed0 | 2432 | |
d47b13e0 AK |
2433 | if (h != NULL |
2434 | && s390_is_ifunc_symbol_p (h) | |
2435 | && h->def_regular | |
2436 | && !bfd_link_executable (info)) | |
2437 | { | |
2438 | relocation = (htab->elf.iplt->output_section->vma | |
2439 | + htab->elf.iplt->output_offset | |
2440 | + h->plt.offset | |
2441 | - htab->elf.sgot->output_section->vma); | |
2442 | goto do_relocation; | |
2443 | } | |
2444 | ||
947216bf AM |
2445 | /* Note that sgot->output_offset is not involved in this |
2446 | calculation. We always want the start of .got. If we | |
2447 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
2448 | permitted by the ABI, we might have to change this | |
2449 | calculation. */ | |
f41345a7 | 2450 | relocation -= htab->elf.sgot->output_section->vma; |
947216bf | 2451 | break; |
a85d7ed0 | 2452 | |
947216bf | 2453 | case R_390_GOTPC: |
a85d7ed0 | 2454 | case R_390_GOTPCDBL: |
947216bf | 2455 | /* Use global offset table as symbol value. */ |
f41345a7 | 2456 | relocation = htab->elf.sgot->output_section->vma; |
b34976b6 | 2457 | unresolved_reloc = FALSE; |
947216bf | 2458 | break; |
a85d7ed0 | 2459 | |
fb798c50 | 2460 | case R_390_PLT12DBL: |
947216bf | 2461 | case R_390_PLT16DBL: |
fb798c50 | 2462 | case R_390_PLT24DBL: |
947216bf AM |
2463 | case R_390_PLT32: |
2464 | case R_390_PLT32DBL: | |
2465 | case R_390_PLT64: | |
2466 | /* Relocation is to the entry for this symbol in the | |
2467 | procedure linkage table. */ | |
a85d7ed0 | 2468 | |
947216bf AM |
2469 | /* Resolve a PLT32 reloc against a local symbol directly, |
2470 | without using the procedure linkage table. */ | |
2471 | if (h == NULL) | |
2472 | break; | |
a85d7ed0 | 2473 | |
947216bf | 2474 | if (h->plt.offset == (bfd_vma) -1 |
31db78f6 | 2475 | || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h))) |
947216bf AM |
2476 | { |
2477 | /* We didn't make a PLT entry for this symbol. This | |
2478 | happens when statically linking PIC code, or when | |
2479 | using -Bsymbolic. */ | |
2480 | break; | |
2481 | } | |
470b557a AK |
2482 | if (s390_is_ifunc_symbol_p (h)) |
2483 | relocation = (htab->elf.iplt->output_section->vma | |
2484 | + htab->elf.iplt->output_offset | |
2485 | + h->plt.offset); | |
2486 | else | |
2487 | relocation = (htab->elf.splt->output_section->vma | |
2488 | + htab->elf.splt->output_offset | |
2489 | + h->plt.offset); | |
b34976b6 | 2490 | unresolved_reloc = FALSE; |
26e41594 | 2491 | break; |
5236c819 MS |
2492 | |
2493 | case R_390_PLTOFF16: | |
2494 | case R_390_PLTOFF32: | |
2495 | case R_390_PLTOFF64: | |
26e41594 AM |
2496 | /* Relocation is to the entry for this symbol in the |
2497 | procedure linkage table relative to the start of the GOT. */ | |
5236c819 MS |
2498 | |
2499 | /* For local symbols or if we didn't make a PLT entry for | |
2500 | this symbol resolve the symbol directly. */ | |
31db78f6 | 2501 | if (h == NULL |
5236c819 | 2502 | || h->plt.offset == (bfd_vma) -1 |
31db78f6 | 2503 | || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h))) |
5236c819 | 2504 | { |
f41345a7 | 2505 | relocation -= htab->elf.sgot->output_section->vma; |
5236c819 MS |
2506 | break; |
2507 | } | |
2508 | ||
470b557a AK |
2509 | if (s390_is_ifunc_symbol_p (h)) |
2510 | relocation = (htab->elf.iplt->output_section->vma | |
2511 | + htab->elf.iplt->output_offset | |
2512 | + h->plt.offset | |
2513 | - htab->elf.sgot->output_section->vma); | |
2514 | else | |
2515 | relocation = (htab->elf.splt->output_section->vma | |
2516 | + htab->elf.splt->output_offset | |
2517 | + h->plt.offset | |
2518 | - htab->elf.sgot->output_section->vma); | |
5236c819 | 2519 | unresolved_reloc = FALSE; |
947216bf AM |
2520 | break; |
2521 | ||
947216bf | 2522 | case R_390_PC16: |
fb798c50 | 2523 | case R_390_PC12DBL: |
947216bf | 2524 | case R_390_PC16DBL: |
fb798c50 | 2525 | case R_390_PC24DBL: |
947216bf | 2526 | case R_390_PC32: |
a85d7ed0 | 2527 | case R_390_PC32DBL: |
947216bf | 2528 | case R_390_PC64: |
431e5de3 AK |
2529 | if (h != NULL |
2530 | && bfd_link_pie (info) | |
2531 | && !h->def_regular) | |
2532 | { | |
2533 | _bfd_error_handler (_("%B: `%s' non-PLT reloc for symbol defined " | |
2534 | "in shared library and accessed " | |
2535 | "from executable " | |
2536 | "(rebuild file with -fPIC ?)"), | |
2537 | input_bfd, h->root.root.string); | |
2538 | bfd_set_error (bfd_error_bad_value); | |
2539 | return FALSE; | |
2540 | } | |
99ba5125 AK |
2541 | /* The target of these relocs are instruction operands |
2542 | residing in read-only sections. We cannot emit a runtime | |
2543 | reloc for it. */ | |
2544 | if (h != NULL | |
2545 | && s390_is_ifunc_symbol_p (h) | |
2546 | && h->def_regular | |
2547 | && bfd_link_pic (info)) | |
2548 | { | |
2549 | relocation = (htab->elf.iplt->output_section->vma | |
2550 | + htab->elf.iplt->output_offset | |
2551 | + h->plt.offset); | |
2552 | goto do_relocation; | |
2553 | } | |
1a0670f3 | 2554 | /* Fall through. */ |
99ba5125 AK |
2555 | |
2556 | case R_390_8: | |
2557 | case R_390_16: | |
2558 | case R_390_32: | |
2559 | case R_390_64: | |
470b557a AK |
2560 | |
2561 | if (h != NULL | |
2562 | && s390_is_ifunc_symbol_p (h) | |
2563 | && h->def_regular) | |
2564 | { | |
d7ab4911 | 2565 | if (!bfd_link_pic (info)) |
470b557a | 2566 | { |
d7ab4911 AK |
2567 | /* For a non-shared object the symbol will not |
2568 | change. Hence we can write the address of the | |
2569 | target IPLT slot now. */ | |
470b557a AK |
2570 | relocation = (htab->elf.iplt->output_section->vma |
2571 | + htab->elf.iplt->output_offset | |
2572 | + h ->plt.offset); | |
2573 | goto do_relocation; | |
2574 | } | |
2575 | else | |
2576 | { | |
2577 | /* For shared objects a runtime relocation is needed. */ | |
2578 | ||
2579 | Elf_Internal_Rela outrel; | |
2580 | asection *sreloc; | |
2581 | ||
2582 | /* Need a dynamic relocation to get the real function | |
2583 | address. */ | |
2584 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
2585 | info, | |
2586 | input_section, | |
2587 | rel->r_offset); | |
2588 | if (outrel.r_offset == (bfd_vma) -1 | |
2589 | || outrel.r_offset == (bfd_vma) -2) | |
2590 | abort (); | |
2591 | ||
2592 | outrel.r_offset += (input_section->output_section->vma | |
2593 | + input_section->output_offset); | |
2594 | ||
2595 | if (h->dynindx == -1 | |
2596 | || h->forced_local | |
0e1862bb | 2597 | || bfd_link_executable (info)) |
470b557a AK |
2598 | { |
2599 | /* This symbol is resolved locally. */ | |
2600 | outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE); | |
2601 | outrel.r_addend = (h->root.u.def.value | |
2602 | + h->root.u.def.section->output_section->vma | |
2603 | + h->root.u.def.section->output_offset); | |
2604 | } | |
2605 | else | |
2606 | { | |
2607 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); | |
2608 | outrel.r_addend = 0; | |
2609 | } | |
2610 | ||
2611 | sreloc = htab->elf.irelifunc; | |
2612 | elf_append_rela (output_bfd, sreloc, &outrel); | |
2613 | ||
2614 | /* If this reloc is against an external symbol, we | |
2615 | do not want to fiddle with the addend. Otherwise, | |
2616 | we need to include the symbol value so that it | |
2617 | becomes an addend for the dynamic reloc. For an | |
2618 | internal symbol, we have updated addend. */ | |
2619 | continue; | |
2620 | } | |
2621 | } | |
2622 | ||
b1e24c02 | 2623 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
2624 | break; |
2625 | ||
0e1862bb | 2626 | if ((bfd_link_pic (info) |
82058a73 | 2627 | && (h == NULL |
b27bb18f L |
2628 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2629 | && !resolved_to_zero) | |
82058a73 | 2630 | || h->root.type != bfd_link_hash_undefweak) |
0451c93c | 2631 | && ((r_type != R_390_PC16 |
fb798c50 | 2632 | && r_type != R_390_PC12DBL |
0451c93c | 2633 | && r_type != R_390_PC16DBL |
fb798c50 | 2634 | && r_type != R_390_PC24DBL |
0451c93c MS |
2635 | && r_type != R_390_PC32 |
2636 | && r_type != R_390_PC32DBL | |
2637 | && r_type != R_390_PC64) | |
8c21ca21 | 2638 | || !SYMBOL_CALLS_LOCAL (info, h))) |
64285810 | 2639 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 2640 | && !bfd_link_pic (info) |
0451c93c MS |
2641 | && h != NULL |
2642 | && h->dynindx != -1 | |
f5385ebf AM |
2643 | && !h->non_got_ref |
2644 | && ((h->def_dynamic | |
2645 | && !h->def_regular) | |
0451c93c MS |
2646 | || h->root.type == bfd_link_hash_undefweak |
2647 | || h->root.type == bfd_link_hash_undefined))) | |
947216bf AM |
2648 | { |
2649 | Elf_Internal_Rela outrel; | |
b34976b6 | 2650 | bfd_boolean skip, relocate; |
0451c93c | 2651 | asection *sreloc; |
947216bf | 2652 | bfd_byte *loc; |
a85d7ed0 | 2653 | |
947216bf AM |
2654 | /* When generating a shared object, these relocations |
2655 | are copied into the output file to be resolved at run | |
2656 | time. */ | |
b34976b6 AM |
2657 | skip = FALSE; |
2658 | relocate = FALSE; | |
a85d7ed0 | 2659 | |
c629eae0 JJ |
2660 | outrel.r_offset = |
2661 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2662 | rel->r_offset); | |
2663 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2664 | skip = TRUE; |
0bb2d96a | 2665 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2666 | skip = TRUE, relocate = TRUE; |
a85d7ed0 | 2667 | |
947216bf AM |
2668 | outrel.r_offset += (input_section->output_section->vma |
2669 | + input_section->output_offset); | |
a85d7ed0 | 2670 | |
947216bf | 2671 | if (skip) |
0bb2d96a | 2672 | memset (&outrel, 0, sizeof outrel); |
947216bf | 2673 | else if (h != NULL |
0451c93c MS |
2674 | && h->dynindx != -1 |
2675 | && (r_type == R_390_PC16 | |
fb798c50 | 2676 | || r_type == R_390_PC12DBL |
0451c93c | 2677 | || r_type == R_390_PC16DBL |
fb798c50 | 2678 | || r_type == R_390_PC24DBL |
0451c93c MS |
2679 | || r_type == R_390_PC32 |
2680 | || r_type == R_390_PC32DBL | |
2681 | || r_type == R_390_PC64 | |
0e1862bb | 2682 | || !bfd_link_pic (info) |
8c21ca21 | 2683 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 2684 | || !h->def_regular)) |
947216bf AM |
2685 | { |
2686 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); | |
27018c3f | 2687 | outrel.r_addend = rel->r_addend; |
947216bf AM |
2688 | } |
2689 | else | |
2690 | { | |
0451c93c | 2691 | /* This symbol is local, or marked to become local. */ |
90ced0dd | 2692 | outrel.r_addend = relocation + rel->r_addend; |
b5727d75 MS |
2693 | if (r_type == R_390_64) |
2694 | { | |
2695 | relocate = TRUE; | |
2696 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); | |
b5727d75 MS |
2697 | } |
2698 | else | |
2699 | { | |
2700 | long sindx; | |
2701 | ||
90ced0dd | 2702 | if (bfd_is_abs_section (sec)) |
b5727d75 MS |
2703 | sindx = 0; |
2704 | else if (sec == NULL || sec->owner == NULL) | |
2705 | { | |
2706 | bfd_set_error(bfd_error_bad_value); | |
2707 | return FALSE; | |
2708 | } | |
2709 | else | |
2710 | { | |
2711 | asection *osec; | |
2712 | ||
2713 | osec = sec->output_section; | |
2714 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
2715 | |
2716 | if (sindx == 0) | |
2717 | { | |
2718 | osec = htab->elf.text_index_section; | |
2719 | sindx = elf_section_data (osec)->dynindx; | |
2720 | } | |
2721 | BFD_ASSERT (sindx != 0); | |
90ced0dd MS |
2722 | |
2723 | /* We are turning this relocation into one | |
2724 | against a section symbol, so subtract out | |
2725 | the output section's address but not the | |
2726 | offset of the input section in the output | |
2727 | section. */ | |
90ced0dd | 2728 | outrel.r_addend -= osec->vma; |
b5727d75 MS |
2729 | } |
2730 | outrel.r_info = ELF64_R_INFO (sindx, r_type); | |
b5727d75 | 2731 | } |
0451c93c | 2732 | } |
a85d7ed0 | 2733 | |
0451c93c MS |
2734 | sreloc = elf_section_data (input_section)->sreloc; |
2735 | if (sreloc == NULL) | |
2736 | abort (); | |
2737 | ||
947216bf AM |
2738 | loc = sreloc->contents; |
2739 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
2740 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
a85d7ed0 | 2741 | |
947216bf AM |
2742 | /* If this reloc is against an external symbol, we do |
2743 | not want to fiddle with the addend. Otherwise, we | |
2744 | need to include the symbol value so that it becomes | |
2745 | an addend for the dynamic reloc. */ | |
2746 | if (! relocate) | |
2747 | continue; | |
2748 | } | |
a85d7ed0 | 2749 | |
947216bf | 2750 | break; |
a85d7ed0 | 2751 | |
69fc87f1 MS |
2752 | /* Relocations for tls literal pool entries. */ |
2753 | case R_390_TLS_IE64: | |
0e1862bb | 2754 | if (bfd_link_pic (info)) |
69fc87f1 MS |
2755 | { |
2756 | Elf_Internal_Rela outrel; | |
2757 | asection *sreloc; | |
2758 | bfd_byte *loc; | |
2759 | ||
2760 | outrel.r_offset = rel->r_offset | |
2761 | + input_section->output_section->vma | |
2762 | + input_section->output_offset; | |
2763 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); | |
2764 | sreloc = elf_section_data (input_section)->sreloc; | |
2765 | if (sreloc == NULL) | |
2766 | abort (); | |
2767 | loc = sreloc->contents; | |
2768 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
2769 | bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc); | |
2770 | } | |
ae9a127f | 2771 | /* Fall through. */ |
69fc87f1 MS |
2772 | |
2773 | case R_390_TLS_GD64: | |
2774 | case R_390_TLS_GOTIE64: | |
2775 | r_type = elf_s390_tls_transition (info, r_type, h == NULL); | |
2776 | tls_type = GOT_UNKNOWN; | |
2777 | if (h == NULL && local_got_offsets) | |
2778 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
2779 | else if (h != NULL) | |
2780 | { | |
2781 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
0e1862bb | 2782 | if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE) |
69fc87f1 MS |
2783 | r_type = R_390_TLS_LE64; |
2784 | } | |
2785 | if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE) | |
2786 | r_type = R_390_TLS_IE64; | |
2787 | ||
2788 | if (r_type == R_390_TLS_LE64) | |
2789 | { | |
2790 | /* This relocation gets optimized away by the local exec | |
2791 | access optimization. */ | |
2792 | BFD_ASSERT (! unresolved_reloc); | |
2793 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
2794 | contents + rel->r_offset); | |
2795 | continue; | |
2796 | } | |
2797 | ||
f41345a7 | 2798 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2799 | abort (); |
2800 | ||
2801 | if (h != NULL) | |
2802 | off = h->got.offset; | |
2803 | else | |
2804 | { | |
2805 | if (local_got_offsets == NULL) | |
2806 | abort (); | |
2807 | ||
2808 | off = local_got_offsets[r_symndx]; | |
2809 | } | |
2810 | ||
2811 | emit_tls_relocs: | |
2812 | ||
2813 | if ((off & 1) != 0) | |
2814 | off &= ~1; | |
26e41594 | 2815 | else |
69fc87f1 MS |
2816 | { |
2817 | Elf_Internal_Rela outrel; | |
2818 | bfd_byte *loc; | |
2819 | int dr_type, indx; | |
2820 | ||
f41345a7 | 2821 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2822 | abort (); |
2823 | ||
f41345a7 AK |
2824 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2825 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2826 | |
2827 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
2828 | if (r_type == R_390_TLS_GD64) | |
2829 | dr_type = R_390_TLS_DTPMOD; | |
2830 | else | |
2831 | dr_type = R_390_TLS_TPOFF; | |
2832 | if (dr_type == R_390_TLS_TPOFF && indx == 0) | |
2833 | outrel.r_addend = relocation - dtpoff_base (info); | |
2834 | else | |
2835 | outrel.r_addend = 0; | |
2836 | outrel.r_info = ELF64_R_INFO (indx, dr_type); | |
f41345a7 AK |
2837 | loc = htab->elf.srelgot->contents; |
2838 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
2839 | * sizeof (Elf64_External_Rela); |
2840 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2841 | ||
2842 | if (r_type == R_390_TLS_GD64) | |
2843 | { | |
2844 | if (indx == 0) | |
2845 | { | |
07d6d2b8 | 2846 | BFD_ASSERT (! unresolved_reloc); |
69fc87f1 MS |
2847 | bfd_put_64 (output_bfd, |
2848 | relocation - dtpoff_base (info), | |
f41345a7 | 2849 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2850 | } |
2851 | else | |
2852 | { | |
2853 | outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF); | |
2854 | outrel.r_offset += GOT_ENTRY_SIZE; | |
2855 | outrel.r_addend = 0; | |
f41345a7 | 2856 | htab->elf.srelgot->reloc_count++; |
69fc87f1 MS |
2857 | loc += sizeof (Elf64_External_Rela); |
2858 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2859 | } | |
2860 | } | |
2861 | ||
2862 | if (h != NULL) | |
2863 | h->got.offset |= 1; | |
2864 | else | |
2865 | local_got_offsets[r_symndx] |= 1; | |
2866 | } | |
2867 | ||
2868 | if (off >= (bfd_vma) -2) | |
2869 | abort (); | |
2870 | if (r_type == ELF64_R_TYPE (rel->r_info)) | |
2871 | { | |
f41345a7 | 2872 | relocation = htab->elf.sgot->output_offset + off; |
69fc87f1 | 2873 | if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT) |
f41345a7 | 2874 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
2875 | unresolved_reloc = FALSE; |
2876 | } | |
2877 | else | |
2878 | { | |
f41345a7 | 2879 | bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off, |
69fc87f1 MS |
2880 | contents + rel->r_offset); |
2881 | continue; | |
2882 | } | |
2883 | break; | |
2884 | ||
2885 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 2886 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
2887 | case R_390_TLS_IEENT: |
2888 | if (h == NULL) | |
2889 | { | |
2890 | if (local_got_offsets == NULL) | |
2891 | abort(); | |
2892 | off = local_got_offsets[r_symndx]; | |
0e1862bb | 2893 | if (bfd_link_pic (info)) |
69fc87f1 MS |
2894 | goto emit_tls_relocs; |
2895 | } | |
2896 | else | |
2897 | { | |
2898 | off = h->got.offset; | |
2899 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
0e1862bb | 2900 | if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE) |
69fc87f1 MS |
2901 | goto emit_tls_relocs; |
2902 | } | |
2903 | ||
f41345a7 | 2904 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2905 | abort (); |
2906 | ||
2907 | BFD_ASSERT (! unresolved_reloc); | |
2908 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
f41345a7 AK |
2909 | htab->elf.sgot->contents + off); |
2910 | relocation = htab->elf.sgot->output_offset + off; | |
69fc87f1 | 2911 | if (r_type == R_390_TLS_IEENT) |
f41345a7 | 2912 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
2913 | unresolved_reloc = FALSE; |
2914 | break; | |
2915 | ||
2916 | case R_390_TLS_LDM64: | |
0e1862bb | 2917 | if (! bfd_link_pic (info)) |
69fc87f1 MS |
2918 | /* The literal pool entry this relocation refers to gets ignored |
2919 | by the optimized code of the local exec model. Do nothing | |
2920 | and the value will turn out zero. */ | |
2921 | continue; | |
2922 | ||
f41345a7 | 2923 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2924 | abort (); |
2925 | ||
2926 | off = htab->tls_ldm_got.offset; | |
2927 | if (off & 1) | |
2928 | off &= ~1; | |
2929 | else | |
2930 | { | |
2931 | Elf_Internal_Rela outrel; | |
2932 | bfd_byte *loc; | |
2933 | ||
f41345a7 | 2934 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2935 | abort (); |
2936 | ||
f41345a7 AK |
2937 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2938 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2939 | |
2940 | bfd_put_64 (output_bfd, 0, | |
f41345a7 | 2941 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2942 | outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD); |
2943 | outrel.r_addend = 0; | |
f41345a7 AK |
2944 | loc = htab->elf.srelgot->contents; |
2945 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
2946 | * sizeof (Elf64_External_Rela); |
2947 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2948 | htab->tls_ldm_got.offset |= 1; | |
2949 | } | |
f41345a7 | 2950 | relocation = htab->elf.sgot->output_offset + off; |
26e41594 | 2951 | unresolved_reloc = FALSE; |
69fc87f1 MS |
2952 | break; |
2953 | ||
2954 | case R_390_TLS_LE64: | |
3cbc1e5e | 2955 | if (bfd_link_dll (info)) |
69fc87f1 MS |
2956 | { |
2957 | /* Linking a shared library with non-fpic code requires | |
2958 | a R_390_TLS_TPOFF relocation. */ | |
2959 | Elf_Internal_Rela outrel; | |
2960 | asection *sreloc; | |
2961 | bfd_byte *loc; | |
2962 | int indx; | |
2963 | ||
2964 | outrel.r_offset = rel->r_offset | |
2965 | + input_section->output_section->vma | |
2966 | + input_section->output_offset; | |
2967 | if (h != NULL && h->dynindx != -1) | |
2968 | indx = h->dynindx; | |
2969 | else | |
2970 | indx = 0; | |
2971 | outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF); | |
2972 | if (indx == 0) | |
2973 | outrel.r_addend = relocation - dtpoff_base (info); | |
2974 | else | |
2975 | outrel.r_addend = 0; | |
2976 | sreloc = elf_section_data (input_section)->sreloc; | |
2977 | if (sreloc == NULL) | |
2978 | abort (); | |
2979 | loc = sreloc->contents; | |
2980 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
2981 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2982 | } | |
2983 | else | |
2984 | { | |
2985 | BFD_ASSERT (! unresolved_reloc); | |
2986 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
2987 | contents + rel->r_offset); | |
2988 | } | |
2989 | continue; | |
2990 | ||
2991 | case R_390_TLS_LDO64: | |
0e1862bb | 2992 | if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING)) |
69fc87f1 MS |
2993 | relocation -= dtpoff_base (info); |
2994 | else | |
2995 | /* When converting LDO to LE, we must negate. */ | |
2996 | relocation = -tpoff (info, relocation); | |
2997 | break; | |
2998 | ||
2999 | /* Relocations for tls instructions. */ | |
3000 | case R_390_TLS_LOAD: | |
3001 | case R_390_TLS_GDCALL: | |
3002 | case R_390_TLS_LDCALL: | |
3003 | tls_type = GOT_UNKNOWN; | |
3004 | if (h == NULL && local_got_offsets) | |
3005 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
3006 | else if (h != NULL) | |
3007 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
3008 | ||
3009 | if (tls_type == GOT_TLS_GD) | |
3010 | continue; | |
3011 | ||
3012 | if (r_type == R_390_TLS_LOAD) | |
3013 | { | |
0e1862bb | 3014 | if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) |
69fc87f1 MS |
3015 | { |
3016 | /* IE->LE transition. Four valid cases: | |
3017 | lg %rx,(0,%ry) -> sllg %rx,%ry,0 | |
3018 | lg %rx,(%ry,0) -> sllg %rx,%ry,0 | |
3019 | lg %rx,(%ry,%r12) -> sllg %rx,%ry,0 | |
3020 | lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */ | |
3021 | unsigned int insn0, insn1, ry; | |
3022 | ||
3023 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3024 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
3025 | if (insn1 != 0x0004) | |
3704e358 AK |
3026 | { |
3027 | invalid_tls_insn (input_bfd, input_section, rel); | |
3028 | return FALSE; | |
3029 | } | |
69fc87f1 MS |
3030 | if ((insn0 & 0xff00f000) == 0xe3000000) |
3031 | /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */ | |
3032 | ry = (insn0 & 0x000f0000); | |
3033 | else if ((insn0 & 0xff0f0000) == 0xe3000000) | |
3034 | /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */ | |
3035 | ry = (insn0 & 0x0000f000) << 4; | |
3036 | else if ((insn0 & 0xff00f000) == 0xe300c000) | |
3037 | /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */ | |
3038 | ry = (insn0 & 0x000f0000); | |
3039 | else if ((insn0 & 0xff0f0000) == 0xe30c0000) | |
3040 | /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */ | |
3041 | ry = (insn0 & 0x0000f000) << 4; | |
3042 | else | |
3704e358 AK |
3043 | { |
3044 | invalid_tls_insn (input_bfd, input_section, rel); | |
3045 | return FALSE; | |
3046 | } | |
69fc87f1 MS |
3047 | insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry; |
3048 | insn1 = 0x000d; | |
3049 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
3050 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
3051 | } | |
3052 | } | |
3053 | else if (r_type == R_390_TLS_GDCALL) | |
3054 | { | |
3055 | unsigned int insn0, insn1; | |
3056 | ||
3057 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3058 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
3059 | if ((insn0 & 0xffff0000) != 0xc0e50000) | |
3704e358 AK |
3060 | { |
3061 | invalid_tls_insn (input_bfd, input_section, rel); | |
3062 | return FALSE; | |
3063 | } | |
0e1862bb | 3064 | if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) |
69fc87f1 MS |
3065 | { |
3066 | /* GD->LE transition. | |
3067 | brasl %r14,__tls_get_addr@plt -> brcl 0,. */ | |
3068 | insn0 = 0xc0040000; | |
3069 | insn1 = 0x0000; | |
3070 | } | |
3071 | else | |
3072 | { | |
3073 | /* GD->IE transition. | |
3074 | brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */ | |
3075 | insn0 = 0xe322c000; | |
3076 | insn1 = 0x0004; | |
3077 | } | |
3078 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
3079 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
3080 | } | |
3081 | else if (r_type == R_390_TLS_LDCALL) | |
3082 | { | |
0e1862bb | 3083 | if (!bfd_link_pic (info)) |
69fc87f1 MS |
3084 | { |
3085 | unsigned int insn0, insn1; | |
3086 | ||
3087 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3088 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
3089 | if ((insn0 & 0xffff0000) != 0xc0e50000) | |
3704e358 AK |
3090 | { |
3091 | invalid_tls_insn (input_bfd, input_section, rel); | |
3092 | return FALSE; | |
3093 | } | |
69fc87f1 MS |
3094 | /* LD->LE transition. |
3095 | brasl %r14,__tls_get_addr@plt -> brcl 0,. */ | |
3096 | insn0 = 0xc0040000; | |
3097 | insn1 = 0x0000; | |
3098 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
3099 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
3100 | } | |
3101 | } | |
3102 | continue; | |
3103 | ||
947216bf AM |
3104 | default: |
3105 | break; | |
3106 | } | |
a85d7ed0 | 3107 | |
239e1f3a AM |
3108 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3109 | because such sections are not SEC_ALLOC and thus ld.so will | |
3110 | not process them. */ | |
0451c93c | 3111 | if (unresolved_reloc |
239e1f3a | 3112 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
3113 | && h->def_dynamic) |
3114 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
3115 | rel->r_offset) != (bfd_vma) -1) | |
4eca0228 | 3116 | _bfd_error_handler |
695344c0 | 3117 | /* xgettext:c-format */ |
d42c267e | 3118 | (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
3119 | input_bfd, |
3120 | input_section, | |
d42c267e | 3121 | rel->r_offset, |
843fe662 | 3122 | howto->name, |
0451c93c MS |
3123 | h->root.root.string); |
3124 | ||
470b557a AK |
3125 | do_relocation: |
3126 | ||
fb798c50 AK |
3127 | /* When applying a 24 bit reloc we need to start one byte |
3128 | earlier. Otherwise the 32 bit get/put bfd operations might | |
3129 | access a byte after the actual section. */ | |
3130 | if (r_type == R_390_PC24DBL | |
3131 | || r_type == R_390_PLT24DBL) | |
3132 | rel->r_offset--; | |
3133 | ||
bd1ea41b MS |
3134 | if (r_type == R_390_20 |
3135 | || r_type == R_390_GOT20 | |
3136 | || r_type == R_390_GOTPLT20 | |
3137 | || r_type == R_390_TLS_GOTIE20) | |
3138 | { | |
3139 | relocation += rel->r_addend; | |
3140 | relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12; | |
3141 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3142 | contents, rel->r_offset, | |
3143 | relocation, 0); | |
3144 | } | |
3145 | else | |
3146 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
a85d7ed0 NC |
3147 | contents, rel->r_offset, |
3148 | relocation, rel->r_addend); | |
3149 | ||
3150 | if (r != bfd_reloc_ok) | |
3151 | { | |
0451c93c | 3152 | const char *name; |
ec338859 | 3153 | |
0451c93c MS |
3154 | if (h != NULL) |
3155 | name = h->root.root.string; | |
3156 | else | |
a85d7ed0 | 3157 | { |
0451c93c MS |
3158 | name = bfd_elf_string_from_elf_section (input_bfd, |
3159 | symtab_hdr->sh_link, | |
3160 | sym->st_name); | |
3161 | if (name == NULL) | |
b34976b6 | 3162 | return FALSE; |
0451c93c MS |
3163 | if (*name == '\0') |
3164 | name = bfd_section_name (input_bfd, sec); | |
3165 | } | |
ec338859 | 3166 | |
0451c93c | 3167 | if (r == bfd_reloc_overflow) |
1a72702b AM |
3168 | (*info->callbacks->reloc_overflow) |
3169 | (info, (h ? &h->root : NULL), name, howto->name, | |
3170 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
0451c93c MS |
3171 | else |
3172 | { | |
4eca0228 | 3173 | _bfd_error_handler |
695344c0 | 3174 | /* xgettext:c-format */ |
d42c267e | 3175 | (_("%B(%A+%#Lx): reloc against `%s': error %d"), |
d003868e | 3176 | input_bfd, input_section, |
d42c267e | 3177 | rel->r_offset, name, (int) r); |
b34976b6 | 3178 | return FALSE; |
a85d7ed0 NC |
3179 | } |
3180 | } | |
3181 | } | |
3182 | ||
b34976b6 | 3183 | return TRUE; |
a85d7ed0 NC |
3184 | } |
3185 | ||
470b557a AK |
3186 | /* Generate the PLT slots together with the dynamic relocations needed |
3187 | for IFUNC symbols. */ | |
3188 | ||
3189 | static void | |
3190 | elf_s390_finish_ifunc_symbol (bfd *output_bfd, | |
3191 | struct bfd_link_info *info, | |
3192 | struct elf_link_hash_entry *h, | |
3193 | struct elf_s390_link_hash_table *htab, | |
3194 | bfd_vma plt_offset, | |
3195 | bfd_vma resolver_address) | |
3196 | { | |
3197 | bfd_vma plt_index; | |
3198 | bfd_vma got_offset; | |
3199 | Elf_Internal_Rela rela; | |
3200 | bfd_byte *loc; | |
3201 | asection *plt, *gotplt, *relplt; | |
3202 | ||
3203 | if (htab->elf.iplt == NULL | |
3204 | || htab->elf.igotplt == NULL | |
3205 | || htab->elf.irelplt == NULL) | |
3206 | abort (); | |
3207 | ||
3208 | /* Index of the PLT slot within iplt section. */ | |
3209 | plt_index = plt_offset / PLT_ENTRY_SIZE; | |
3210 | plt = htab->elf.iplt; | |
3211 | /* Offset into the igot.plt section. */ | |
3212 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
3213 | gotplt = htab->elf.igotplt; | |
3214 | relplt = htab->elf.irelplt; | |
3215 | ||
3216 | /* Fill in the blueprint of a PLT. */ | |
3217 | memcpy (plt->contents + plt_offset, elf_s390x_plt_entry, | |
3218 | PLT_ENTRY_SIZE); | |
3219 | ||
3220 | /* Fixup the relative address to the GOT entry */ | |
3221 | bfd_put_32 (output_bfd, | |
3222 | (gotplt->output_section->vma + | |
3223 | gotplt->output_offset + got_offset | |
3224 | - (plt->output_section->vma + | |
3225 | plt->output_offset + | |
3226 | plt_offset))/2, | |
3227 | plt->contents + plt_offset + 2); | |
3228 | /* Fixup the relative branch to PLT 0 */ | |
3229 | bfd_put_32 (output_bfd, - (plt->output_offset + | |
3230 | (PLT_ENTRY_SIZE * plt_index) + 22)/2, | |
3231 | plt->contents + plt_offset + 24); | |
3232 | /* Fixup offset into .rela.plt section. */ | |
3233 | bfd_put_32 (output_bfd, relplt->output_offset + | |
3234 | plt_index * sizeof (Elf64_External_Rela), | |
3235 | plt->contents + plt_offset + 28); | |
3236 | ||
3237 | /* Fill in the entry in the global offset table. | |
3238 | Points to instruction after GOT offset. */ | |
3239 | bfd_put_64 (output_bfd, | |
3240 | (plt->output_section->vma | |
3241 | + plt->output_offset | |
3242 | + plt_offset | |
3243 | + 14), | |
3244 | gotplt->contents + got_offset); | |
3245 | ||
3246 | /* Fill in the entry in the .rela.plt section. */ | |
3247 | rela.r_offset = (gotplt->output_section->vma | |
3248 | + gotplt->output_offset | |
3249 | + got_offset); | |
3250 | ||
3251 | if (!h | |
3252 | || h->dynindx == -1 | |
0e1862bb | 3253 | || ((bfd_link_executable (info) |
470b557a AK |
3254 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
3255 | && h->def_regular)) | |
3256 | { | |
3257 | /* The symbol can be locally resolved. */ | |
3258 | rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE); | |
3259 | rela.r_addend = resolver_address; | |
3260 | } | |
3261 | else | |
3262 | { | |
3263 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3264 | rela.r_addend = 0; | |
3265 | } | |
3266 | ||
3267 | loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela); | |
3268 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
3269 | } | |
3270 | ||
3271 | ||
a85d7ed0 NC |
3272 | /* Finish up dynamic symbol handling. We set the contents of various |
3273 | dynamic sections here. */ | |
3274 | ||
b34976b6 | 3275 | static bfd_boolean |
4dfe6ac6 NC |
3276 | elf_s390_finish_dynamic_symbol (bfd *output_bfd, |
3277 | struct bfd_link_info *info, | |
3278 | struct elf_link_hash_entry *h, | |
3279 | Elf_Internal_Sym *sym) | |
a85d7ed0 | 3280 | { |
0451c93c | 3281 | struct elf_s390_link_hash_table *htab; |
470b557a | 3282 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h; |
a85d7ed0 | 3283 | |
0451c93c | 3284 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
3285 | if (htab == NULL) |
3286 | return FALSE; | |
a85d7ed0 NC |
3287 | |
3288 | if (h->plt.offset != (bfd_vma) -1) | |
3289 | { | |
a85d7ed0 | 3290 | bfd_vma plt_index; |
0451c93c MS |
3291 | bfd_vma got_offset; |
3292 | Elf_Internal_Rela rela; | |
947216bf | 3293 | bfd_byte *loc; |
a85d7ed0 NC |
3294 | |
3295 | /* This symbol has an entry in the procedure linkage table. Set | |
947216bf | 3296 | it up. */ |
0a511368 | 3297 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) |
470b557a | 3298 | { |
0a511368 AK |
3299 | elf_s390_finish_ifunc_symbol (output_bfd, info, h, |
3300 | htab, h->plt.offset, | |
3301 | eh->ifunc_resolver_address + | |
3302 | eh->ifunc_resolver_section->output_offset + | |
3303 | eh->ifunc_resolver_section->output_section->vma); | |
3304 | ||
3305 | /* Do not return yet. Handling of explicit GOT slots of | |
3306 | IFUNC symbols is below. */ | |
470b557a AK |
3307 | } |
3308 | else | |
3309 | { | |
3310 | if (h->dynindx == -1 | |
3311 | || htab->elf.splt == NULL | |
3312 | || htab->elf.sgotplt == NULL | |
3313 | || htab->elf.srelplt == NULL) | |
3314 | abort (); | |
a85d7ed0 | 3315 | |
470b557a AK |
3316 | /* Calc. index no. |
3317 | Current offset - size first entry / entry size. */ | |
3318 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
a85d7ed0 | 3319 | |
470b557a AK |
3320 | /* Offset in GOT is PLT index plus GOT headers(3) times 8, |
3321 | addr & GOT addr. */ | |
3322 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
a85d7ed0 | 3323 | |
470b557a AK |
3324 | /* Fill in the blueprint of a PLT. */ |
3325 | memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry, | |
3326 | PLT_ENTRY_SIZE); | |
3327 | ||
3328 | /* Fixup the relative address to the GOT entry */ | |
3329 | bfd_put_32 (output_bfd, | |
3330 | (htab->elf.sgotplt->output_section->vma + | |
3331 | htab->elf.sgotplt->output_offset + got_offset | |
3332 | - (htab->elf.splt->output_section->vma + | |
3333 | htab->elf.splt->output_offset + | |
3334 | h->plt.offset))/2, | |
3335 | htab->elf.splt->contents + h->plt.offset + 2); | |
3336 | /* Fixup the relative branch to PLT 0 */ | |
3337 | bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE + | |
3338 | (PLT_ENTRY_SIZE * plt_index) + 22)/2, | |
3339 | htab->elf.splt->contents + h->plt.offset + 24); | |
3340 | /* Fixup offset into .rela.plt section. */ | |
3341 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela), | |
3342 | htab->elf.splt->contents + h->plt.offset + 28); | |
3343 | ||
3344 | /* Fill in the entry in the global offset table. | |
3345 | Points to instruction after GOT offset. */ | |
3346 | bfd_put_64 (output_bfd, | |
3347 | (htab->elf.splt->output_section->vma | |
3348 | + htab->elf.splt->output_offset | |
3349 | + h->plt.offset | |
3350 | + 14), | |
3351 | htab->elf.sgotplt->contents + got_offset); | |
3352 | ||
3353 | /* Fill in the entry in the .rela.plt section. */ | |
3354 | rela.r_offset = (htab->elf.sgotplt->output_section->vma | |
3355 | + htab->elf.sgotplt->output_offset | |
3356 | + got_offset); | |
3357 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3358 | rela.r_addend = 0; | |
3359 | loc = htab->elf.srelplt->contents + plt_index * | |
3360 | sizeof (Elf64_External_Rela); | |
3361 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
3362 | ||
3363 | if (!h->def_regular) | |
3364 | { | |
3365 | /* Mark the symbol as undefined, rather than as defined in | |
3366 | the .plt section. Leave the value alone. This is a clue | |
3367 | for the dynamic linker, to make function pointer | |
3368 | comparisons work between an application and shared | |
3369 | library. */ | |
3370 | sym->st_shndx = SHN_UNDEF; | |
3371 | } | |
a85d7ed0 NC |
3372 | } |
3373 | } | |
3374 | ||
69fc87f1 MS |
3375 | if (h->got.offset != (bfd_vma) -1 |
3376 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD | |
3377 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE | |
3378 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT) | |
a85d7ed0 | 3379 | { |
a85d7ed0 | 3380 | Elf_Internal_Rela rela; |
947216bf | 3381 | bfd_byte *loc; |
a85d7ed0 NC |
3382 | |
3383 | /* This symbol has an entry in the global offset table. Set it | |
947216bf | 3384 | up. */ |
f41345a7 | 3385 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
0451c93c | 3386 | abort (); |
a85d7ed0 | 3387 | |
f41345a7 AK |
3388 | rela.r_offset = (htab->elf.sgot->output_section->vma |
3389 | + htab->elf.sgot->output_offset | |
dc810e39 | 3390 | + (h->got.offset &~ (bfd_vma) 1)); |
a85d7ed0 | 3391 | |
470b557a AK |
3392 | if (h->def_regular && s390_is_ifunc_symbol_p (h)) |
3393 | { | |
0e1862bb | 3394 | if (bfd_link_pic (info)) |
470b557a AK |
3395 | { |
3396 | /* An explicit GOT slot usage needs GLOB_DAT. If the | |
3397 | symbol references local the implicit got.iplt slot | |
3398 | will be used and the IRELATIVE reloc has been created | |
3399 | above. */ | |
3400 | goto do_glob_dat; | |
3401 | } | |
3402 | else | |
3403 | { | |
3404 | /* For non-shared objects explicit GOT slots must be | |
3405 | filled with the PLT slot address for pointer | |
3406 | equality reasons. */ | |
3407 | bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma | |
3408 | + htab->elf.iplt->output_offset | |
3409 | + h->plt.offset), | |
3410 | htab->elf.sgot->contents + h->got.offset); | |
3411 | return TRUE; | |
3412 | } | |
3413 | } | |
0e1862bb | 3414 | else if (bfd_link_pic (info) |
ceada896 | 3415 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
947216bf | 3416 | { |
10e7c045 AK |
3417 | if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
3418 | return TRUE; | |
3419 | ||
470b557a AK |
3420 | /* If this is a static link, or it is a -Bsymbolic link and |
3421 | the symbol is defined locally or was forced to be local | |
3422 | because of a version file, we just want to emit a | |
3423 | RELATIVE reloc. The entry in the global offset table | |
3424 | will already have been initialized in the | |
3425 | relocate_section function. */ | |
8170f769 | 3426 | if (!(h->def_regular || ELF_COMMON_DEF_P (h))) |
8c21ca21 | 3427 | return FALSE; |
0451c93c | 3428 | BFD_ASSERT((h->got.offset & 1) != 0); |
947216bf AM |
3429 | rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE); |
3430 | rela.r_addend = (h->root.u.def.value | |
3431 | + h->root.u.def.section->output_section->vma | |
3432 | + h->root.u.def.section->output_offset); | |
3433 | } | |
a85d7ed0 NC |
3434 | else |
3435 | { | |
3436 | BFD_ASSERT((h->got.offset & 1) == 0); | |
ceada896 | 3437 | do_glob_dat: |
f41345a7 | 3438 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset); |
a85d7ed0 | 3439 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT); |
947216bf AM |
3440 | rela.r_addend = 0; |
3441 | } | |
a85d7ed0 | 3442 | |
f41345a7 AK |
3443 | loc = htab->elf.srelgot->contents; |
3444 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela); | |
0451c93c | 3445 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3446 | } |
3447 | ||
f5385ebf | 3448 | if (h->needs_copy) |
a85d7ed0 | 3449 | { |
a85d7ed0 | 3450 | Elf_Internal_Rela rela; |
5474d94f | 3451 | asection *s; |
947216bf | 3452 | bfd_byte *loc; |
a85d7ed0 NC |
3453 | |
3454 | /* This symbols needs a copy reloc. Set it up. */ | |
3455 | ||
0451c93c MS |
3456 | if (h->dynindx == -1 |
3457 | || (h->root.type != bfd_link_hash_defined | |
3458 | && h->root.type != bfd_link_hash_defweak) | |
9d19e4fd | 3459 | || htab->elf.srelbss == NULL) |
0451c93c | 3460 | abort (); |
a85d7ed0 NC |
3461 | |
3462 | rela.r_offset = (h->root.u.def.value | |
3463 | + h->root.u.def.section->output_section->vma | |
3464 | + h->root.u.def.section->output_offset); | |
3465 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY); | |
3466 | rela.r_addend = 0; | |
afbf7e8e | 3467 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
3468 | s = htab->elf.sreldynrelro; |
3469 | else | |
3470 | s = htab->elf.srelbss; | |
3471 | loc = s->contents + s->reloc_count++ * sizeof (Elf64_External_Rela); | |
0451c93c | 3472 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3473 | } |
3474 | ||
3475 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 3476 | if (h == htab->elf.hdynamic |
22edb2f1 RS |
3477 | || h == htab->elf.hgot |
3478 | || h == htab->elf.hplt) | |
a85d7ed0 NC |
3479 | sym->st_shndx = SHN_ABS; |
3480 | ||
b34976b6 | 3481 | return TRUE; |
a85d7ed0 NC |
3482 | } |
3483 | ||
0451c93c MS |
3484 | /* Used to decide how to sort relocs in an optimal manner for the |
3485 | dynamic linker, before writing them out. */ | |
3486 | ||
3487 | static enum elf_reloc_type_class | |
7e612e98 AM |
3488 | elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
3489 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
3490 | const Elf_Internal_Rela *rela) | |
0451c93c | 3491 | { |
0f042c67 AK |
3492 | bfd *abfd = info->output_bfd; |
3493 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3494 | struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info); | |
3495 | unsigned long r_symndx = ELF64_R_SYM (rela->r_info); | |
3496 | Elf_Internal_Sym sym; | |
3497 | ||
3498 | if (htab->elf.dynsym == NULL | |
3499 | || !bed->s->swap_symbol_in (abfd, | |
3500 | (htab->elf.dynsym->contents | |
3501 | + r_symndx * bed->s->sizeof_sym), | |
3502 | 0, &sym)) | |
3503 | abort (); | |
3504 | ||
3505 | /* Check relocation against STT_GNU_IFUNC symbol. */ | |
3506 | if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
3507 | return reloc_class_ifunc; | |
3508 | ||
0451c93c MS |
3509 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
3510 | { | |
3511 | case R_390_RELATIVE: | |
3512 | return reloc_class_relative; | |
3513 | case R_390_JMP_SLOT: | |
3514 | return reloc_class_plt; | |
3515 | case R_390_COPY: | |
3516 | return reloc_class_copy; | |
3517 | default: | |
3518 | return reloc_class_normal; | |
3519 | } | |
3520 | } | |
3521 | ||
a85d7ed0 NC |
3522 | /* Finish up the dynamic sections. */ |
3523 | ||
b34976b6 | 3524 | static bfd_boolean |
4dfe6ac6 NC |
3525 | elf_s390_finish_dynamic_sections (bfd *output_bfd, |
3526 | struct bfd_link_info *info) | |
a85d7ed0 | 3527 | { |
0451c93c | 3528 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
3529 | bfd *dynobj; |
3530 | asection *sdyn; | |
470b557a AK |
3531 | bfd *ibfd; |
3532 | unsigned int i; | |
a85d7ed0 | 3533 | |
0451c93c | 3534 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
3535 | if (htab == NULL) |
3536 | return FALSE; | |
3537 | ||
0451c93c | 3538 | dynobj = htab->elf.dynobj; |
3d4d4302 | 3539 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
a85d7ed0 | 3540 | |
0451c93c | 3541 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 | 3542 | { |
a85d7ed0 NC |
3543 | Elf64_External_Dyn *dyncon, *dynconend; |
3544 | ||
f41345a7 | 3545 | if (sdyn == NULL || htab->elf.sgot == NULL) |
0451c93c | 3546 | abort (); |
a85d7ed0 NC |
3547 | |
3548 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 3549 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
a85d7ed0 NC |
3550 | for (; dyncon < dynconend; dyncon++) |
3551 | { | |
3552 | Elf_Internal_Dyn dyn; | |
a85d7ed0 | 3553 | asection *s; |
ec338859 | 3554 | |
a85d7ed0 | 3555 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); |
ec338859 | 3556 | |
a85d7ed0 NC |
3557 | switch (dyn.d_tag) |
3558 | { | |
3559 | default: | |
0451c93c | 3560 | continue; |
ec338859 | 3561 | |
a85d7ed0 | 3562 | case DT_PLTGOT: |
4ade44b7 AM |
3563 | s = htab->elf.sgotplt; |
3564 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
0451c93c | 3565 | break; |
ec338859 | 3566 | |
a85d7ed0 | 3567 | case DT_JMPREL: |
4ade44b7 AM |
3568 | s = htab->elf.srelplt; |
3569 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
a85d7ed0 | 3570 | break; |
ec338859 | 3571 | |
a85d7ed0 | 3572 | case DT_PLTRELSZ: |
79c12fae AK |
3573 | dyn.d_un.d_val = htab->elf.srelplt->size; |
3574 | if (htab->elf.irelplt) | |
3575 | dyn.d_un.d_val += htab->elf.irelplt->size; | |
a85d7ed0 | 3576 | break; |
ec338859 | 3577 | |
a85d7ed0 NC |
3578 | case DT_RELASZ: |
3579 | /* The procedure linkage table relocs (DT_JMPREL) should | |
3580 | not be included in the overall relocs (DT_RELA). | |
3581 | Therefore, we override the DT_RELASZ entry here to | |
3582 | make it not include the JMPREL relocs. Since the | |
3583 | linker script arranges for .rela.plt to follow all | |
3584 | other relocation sections, we don't have to worry | |
3585 | about changing the DT_RELA entry. */ | |
79c12fae AK |
3586 | dyn.d_un.d_val -= htab->elf.srelplt->size; |
3587 | if (htab->elf.irelplt) | |
3588 | dyn.d_un.d_val -= htab->elf.irelplt->size; | |
a85d7ed0 NC |
3589 | break; |
3590 | } | |
0451c93c MS |
3591 | |
3592 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
a85d7ed0 NC |
3593 | } |
3594 | ||
3595 | /* Fill in the special first entry in the procedure linkage table. */ | |
f41345a7 | 3596 | if (htab->elf.splt && htab->elf.splt->size > 0) |
a85d7ed0 NC |
3597 | { |
3598 | /* fill in blueprint for plt 0 entry */ | |
f41345a7 | 3599 | memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry, |
9aa17453 | 3600 | PLT_FIRST_ENTRY_SIZE); |
a85d7ed0 NC |
3601 | /* Fixup relative address to start of GOT */ |
3602 | bfd_put_32 (output_bfd, | |
161db279 AK |
3603 | (htab->elf.sgotplt->output_section->vma |
3604 | + htab->elf.sgotplt->output_offset | |
3605 | - htab->elf.splt->output_section->vma | |
3606 | - htab->elf.splt->output_offset - 6)/2, | |
f41345a7 | 3607 | htab->elf.splt->contents + 8); |
a85d7ed0 | 3608 | } |
387f8054 MR |
3609 | if (elf_section_data (htab->elf.splt->output_section) != NULL) |
3610 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize | |
3611 | = PLT_ENTRY_SIZE; | |
a85d7ed0 NC |
3612 | } |
3613 | ||
f41345a7 | 3614 | if (htab->elf.sgotplt) |
a85d7ed0 | 3615 | { |
0451c93c | 3616 | /* Fill in the first three entries in the global offset table. */ |
f41345a7 | 3617 | if (htab->elf.sgotplt->size > 0) |
0451c93c MS |
3618 | { |
3619 | bfd_put_64 (output_bfd, | |
3620 | (sdyn == NULL ? (bfd_vma) 0 | |
3621 | : sdyn->output_section->vma + sdyn->output_offset), | |
f41345a7 | 3622 | htab->elf.sgotplt->contents); |
0451c93c | 3623 | /* One entry for shared object struct ptr. */ |
f41345a7 | 3624 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8); |
0451c93c | 3625 | /* One entry for _dl_runtime_resolve. */ |
3b67f094 | 3626 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 16); |
0451c93c | 3627 | } |
a85d7ed0 | 3628 | |
f41345a7 | 3629 | elf_section_data (htab->elf.sgot->output_section) |
0451c93c MS |
3630 | ->this_hdr.sh_entsize = 8; |
3631 | } | |
470b557a AK |
3632 | |
3633 | /* Finish dynamic symbol for local IFUNC symbols. */ | |
c72f2fb2 | 3634 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
470b557a AK |
3635 | { |
3636 | struct plt_entry *local_plt; | |
3637 | Elf_Internal_Sym *isym; | |
3638 | Elf_Internal_Shdr *symtab_hdr; | |
3639 | ||
3640 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
3641 | ||
1ef692ea AK |
3642 | if (!is_s390_elf (ibfd)) |
3643 | continue; | |
3644 | ||
470b557a AK |
3645 | local_plt = elf_s390_local_plt (ibfd); |
3646 | if (local_plt != NULL) | |
3647 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
3648 | { | |
3649 | if (local_plt[i].plt.offset != (bfd_vma) -1) | |
3650 | { | |
3651 | asection *sec = local_plt[i].sec; | |
3652 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i); | |
3653 | if (isym == NULL) | |
3654 | return FALSE; | |
3655 | ||
3656 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
3657 | elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab, | |
3658 | local_plt[i].plt.offset, | |
3659 | isym->st_value | |
3660 | + sec->output_section->vma | |
3661 | + sec->output_offset); | |
3662 | ||
3663 | } | |
3664 | } | |
3665 | } | |
3666 | ||
b34976b6 | 3667 | return TRUE; |
a85d7ed0 | 3668 | } |
e3e9290d AA |
3669 | \f |
3670 | /* Support for core dump NOTE sections. */ | |
a85d7ed0 | 3671 | |
e3e9290d AA |
3672 | static bfd_boolean |
3673 | elf_s390_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
3674 | { | |
3675 | int offset; | |
3676 | size_t size; | |
3677 | ||
3678 | switch (note->descsz) | |
3679 | { | |
3680 | default: | |
3681 | return FALSE; | |
3682 | ||
3683 | case 336: /* sizeof(struct elf_prstatus) on s390x */ | |
3684 | /* pr_cursig */ | |
3685 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
3686 | ||
3687 | /* pr_pid */ | |
3688 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); | |
3689 | ||
3690 | /* pr_reg */ | |
3691 | offset = 112; | |
3692 | size = 216; | |
3693 | break; | |
3694 | } | |
3695 | ||
3696 | /* Make a ".reg/999" section. */ | |
3697 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
3698 | size, note->descpos + offset); | |
3699 | } | |
3700 | ||
3701 | static bfd_boolean | |
3702 | elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
3703 | { | |
3704 | switch (note->descsz) | |
3705 | { | |
3706 | default: | |
3707 | return FALSE; | |
3708 | ||
3709 | case 136: /* sizeof(struct elf_prpsinfo) on s390x */ | |
3710 | elf_tdata (abfd)->core->pid | |
3711 | = bfd_get_32 (abfd, note->descdata + 24); | |
3712 | elf_tdata (abfd)->core->program | |
3713 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
3714 | elf_tdata (abfd)->core->command | |
3715 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
3716 | } | |
3717 | ||
3718 | /* Note that for some reason, a spurious space is tacked | |
3719 | onto the end of the args in some (at least one anyway) | |
3720 | implementations, so strip it off if it exists. */ | |
3721 | ||
3722 | { | |
3723 | char *command = elf_tdata (abfd)->core->command; | |
3724 | int n = strlen (command); | |
3725 | ||
3726 | if (0 < n && command[n - 1] == ' ') | |
3727 | command[n - 1] = '\0'; | |
3728 | } | |
3729 | ||
3730 | return TRUE; | |
3731 | } | |
3732 | ||
3733 | static char * | |
3734 | elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz, | |
3735 | int note_type, ...) | |
3736 | { | |
3737 | va_list ap; | |
3738 | ||
3739 | switch (note_type) | |
3740 | { | |
3741 | default: | |
3742 | return NULL; | |
3743 | ||
3744 | case NT_PRPSINFO: | |
3745 | { | |
3746 | char data[136] = { 0 }; | |
3747 | const char *fname, *psargs; | |
3748 | ||
3749 | va_start (ap, note_type); | |
3750 | fname = va_arg (ap, const char *); | |
3751 | psargs = va_arg (ap, const char *); | |
3752 | va_end (ap); | |
3753 | ||
3754 | strncpy (data + 40, fname, 16); | |
3755 | strncpy (data + 56, psargs, 80); | |
3756 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, | |
3757 | &data, sizeof (data)); | |
3758 | } | |
3759 | ||
3760 | case NT_PRSTATUS: | |
3761 | { | |
3762 | char data[336] = { 0 }; | |
3763 | long pid; | |
3764 | int cursig; | |
3765 | const void *gregs; | |
3766 | ||
3767 | va_start (ap, note_type); | |
3768 | pid = va_arg (ap, long); | |
3769 | cursig = va_arg (ap, int); | |
3770 | gregs = va_arg (ap, const void *); | |
3771 | va_end (ap); | |
3772 | ||
3773 | bfd_put_16 (abfd, cursig, data + 12); | |
3774 | bfd_put_32 (abfd, pid, data + 32); | |
3775 | memcpy (data + 112, gregs, 216); | |
3776 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, | |
3777 | &data, sizeof (data)); | |
3778 | } | |
3779 | } | |
3780 | /* NOTREACHED */ | |
3781 | } | |
3782 | \f | |
4c45e5c9 JJ |
3783 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
3784 | or (bfd_vma) -1 if it should not be included. */ | |
3785 | ||
3786 | static bfd_vma | |
3787 | elf_s390_plt_sym_val (bfd_vma i, const asection *plt, | |
3788 | const arelent *rel ATTRIBUTE_UNUSED) | |
3789 | { | |
3790 | return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE; | |
3791 | } | |
3792 | ||
643f7afb AK |
3793 | /* Merge backend specific data from an object file to the output |
3794 | object file when linking. */ | |
3795 | ||
3796 | static bfd_boolean | |
50e03d47 | 3797 | elf64_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
643f7afb | 3798 | { |
50e03d47 | 3799 | if (!is_s390_elf (ibfd) || !is_s390_elf (info->output_bfd)) |
643f7afb AK |
3800 | return TRUE; |
3801 | ||
50e03d47 | 3802 | return elf_s390_merge_obj_attributes (ibfd, info); |
643f7afb AK |
3803 | } |
3804 | ||
b4cbbe8f AK |
3805 | /* We may add a PT_S390_PGSTE program header. */ |
3806 | ||
3807 | static int | |
3808 | elf_s390_additional_program_headers (bfd *abfd ATTRIBUTE_UNUSED, | |
3809 | struct bfd_link_info *info) | |
3810 | { | |
3811 | struct elf_s390_link_hash_table *htab; | |
3812 | ||
93ec5e23 AK |
3813 | if (info) |
3814 | { | |
3815 | htab = elf_s390_hash_table (info); | |
3816 | if (htab) | |
3817 | return htab->params->pgste; | |
3818 | } | |
3819 | return 0; | |
b4cbbe8f AK |
3820 | } |
3821 | ||
3822 | ||
3823 | /* Add the PT_S390_PGSTE program header. */ | |
3824 | ||
3825 | static bfd_boolean | |
93ec5e23 | 3826 | elf_s390_modify_segment_map (bfd *abfd, struct bfd_link_info *info) |
b4cbbe8f AK |
3827 | { |
3828 | struct elf_s390_link_hash_table *htab; | |
3829 | struct elf_segment_map *m, *pm = NULL; | |
3830 | ||
93ec5e23 AK |
3831 | if (!abfd || !info) |
3832 | return TRUE; | |
3833 | ||
b4cbbe8f | 3834 | htab = elf_s390_hash_table (info); |
93ec5e23 | 3835 | if (!htab || !htab->params->pgste) |
b4cbbe8f AK |
3836 | return TRUE; |
3837 | ||
3838 | /* If there is already a PT_S390_PGSTE header, avoid adding | |
3839 | another. */ | |
3840 | m = elf_seg_map (abfd); | |
3841 | while (m && m->p_type != PT_S390_PGSTE) | |
3842 | { | |
3843 | pm = m; | |
3844 | m = m->next; | |
3845 | } | |
3846 | ||
3847 | if (m) | |
3848 | return TRUE; | |
3849 | ||
3850 | m = (struct elf_segment_map *) | |
3851 | bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3852 | if (m == NULL) | |
3853 | return FALSE; | |
3854 | m->p_type = PT_S390_PGSTE; | |
3855 | m->count = 0; | |
3856 | m->next = NULL; | |
3857 | if (pm) | |
3858 | pm->next = m; | |
3859 | ||
3860 | return TRUE; | |
3861 | } | |
3862 | ||
3863 | bfd_boolean | |
3864 | bfd_elf_s390_set_options (struct bfd_link_info *info, | |
3865 | struct s390_elf_params *params) | |
3866 | { | |
3867 | struct elf_s390_link_hash_table *htab; | |
3868 | ||
93ec5e23 AK |
3869 | if (info) |
3870 | { | |
3871 | htab = elf_s390_hash_table (info); | |
3872 | if (htab) | |
3873 | htab->params = params; | |
3874 | } | |
b4cbbe8f AK |
3875 | |
3876 | return TRUE; | |
3877 | } | |
3878 | ||
3879 | ||
ae9a127f NC |
3880 | /* Why was the hash table entry size definition changed from |
3881 | ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and | |
3882 | this is the only reason for the s390_elf64_size_info structure. */ | |
a85d7ed0 NC |
3883 | |
3884 | const struct elf_size_info s390_elf64_size_info = | |
3885 | { | |
3886 | sizeof (Elf64_External_Ehdr), | |
3887 | sizeof (Elf64_External_Phdr), | |
3888 | sizeof (Elf64_External_Shdr), | |
3889 | sizeof (Elf64_External_Rel), | |
3890 | sizeof (Elf64_External_Rela), | |
3891 | sizeof (Elf64_External_Sym), | |
3892 | sizeof (Elf64_External_Dyn), | |
3893 | sizeof (Elf_External_Note), | |
ae9a127f NC |
3894 | 8, /* hash-table entry size. */ |
3895 | 1, /* internal relocations per external relocations. */ | |
3896 | 64, /* arch_size. */ | |
45d6a902 | 3897 | 3, /* log_file_align. */ |
a85d7ed0 NC |
3898 | ELFCLASS64, EV_CURRENT, |
3899 | bfd_elf64_write_out_phdrs, | |
3900 | bfd_elf64_write_shdrs_and_ehdr, | |
1489a3a0 | 3901 | bfd_elf64_checksum_contents, |
a85d7ed0 | 3902 | bfd_elf64_write_relocs, |
73ff0d56 | 3903 | bfd_elf64_swap_symbol_in, |
a85d7ed0 NC |
3904 | bfd_elf64_swap_symbol_out, |
3905 | bfd_elf64_slurp_reloc_table, | |
3906 | bfd_elf64_slurp_symbol_table, | |
3907 | bfd_elf64_swap_dyn_in, | |
3908 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
3909 | bfd_elf64_swap_reloc_in, |
3910 | bfd_elf64_swap_reloc_out, | |
3911 | bfd_elf64_swap_reloca_in, | |
3912 | bfd_elf64_swap_reloca_out | |
a85d7ed0 NC |
3913 | }; |
3914 | ||
6d00b590 | 3915 | #define TARGET_BIG_SYM s390_elf64_vec |
a85d7ed0 NC |
3916 | #define TARGET_BIG_NAME "elf64-s390" |
3917 | #define ELF_ARCH bfd_arch_s390 | |
ae95ffa6 | 3918 | #define ELF_TARGET_ID S390_ELF_DATA |
a85d7ed0 NC |
3919 | #define ELF_MACHINE_CODE EM_S390 |
3920 | #define ELF_MACHINE_ALT1 EM_S390_OLD | |
3921 | #define ELF_MAXPAGESIZE 0x1000 | |
3922 | ||
3923 | #define elf_backend_size_info s390_elf64_size_info | |
3924 | ||
3925 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 3926 | #define elf_backend_can_refcount 1 |
a85d7ed0 NC |
3927 | #define elf_backend_want_got_plt 1 |
3928 | #define elf_backend_plt_readonly 1 | |
3929 | #define elf_backend_want_plt_sym 0 | |
3930 | #define elf_backend_got_header_size 24 | |
5474d94f | 3931 | #define elf_backend_want_dynrelro 1 |
b491616a | 3932 | #define elf_backend_rela_normal 1 |
a85d7ed0 NC |
3933 | |
3934 | #define elf_info_to_howto elf_s390_info_to_howto | |
3935 | ||
a85d7ed0 NC |
3936 | #define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name |
3937 | #define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create | |
3938 | #define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup | |
07d6d2b8 | 3939 | #define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup |
643f7afb | 3940 | #define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data |
a85d7ed0 NC |
3941 | |
3942 | #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol | |
3943 | #define elf_backend_check_relocs elf_s390_check_relocs | |
0451c93c | 3944 | #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol |
9d19e4fd | 3945 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
a85d7ed0 NC |
3946 | #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections |
3947 | #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol | |
3948 | #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook | |
0451c93c | 3949 | #define elf_backend_reloc_type_class elf_s390_reloc_type_class |
a85d7ed0 NC |
3950 | #define elf_backend_relocate_section elf_s390_relocate_section |
3951 | #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections | |
74541ad4 | 3952 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
e3e9290d AA |
3953 | #define elf_backend_grok_prstatus elf_s390_grok_prstatus |
3954 | #define elf_backend_grok_psinfo elf_s390_grok_psinfo | |
3955 | #define elf_backend_write_core_note elf_s390_write_core_note | |
4c45e5c9 | 3956 | #define elf_backend_plt_sym_val elf_s390_plt_sym_val |
07d6d2b8 AM |
3957 | #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook |
3958 | #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p | |
b4cbbe8f AK |
3959 | #define elf_backend_additional_program_headers elf_s390_additional_program_headers |
3960 | #define elf_backend_modify_segment_map elf_s390_modify_segment_map | |
a85d7ed0 | 3961 | |
69fc87f1 MS |
3962 | #define bfd_elf64_mkobject elf_s390_mkobject |
3963 | #define elf_backend_object_p elf_s390_object_p | |
a85d7ed0 NC |
3964 | |
3965 | #include "elf64-target.h" |