Commit | Line | Data |
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a85d7ed0 | 1 | /* IBM S/390-specific support for 64-bit ELF |
219d1afa | 2 | Copyright (C) 2000-2018 Free Software Foundation, Inc. |
a85d7ed0 NC |
3 | Contributed Martin Schwidefsky (schwidefsky@de.ibm.com). |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
a85d7ed0 NC |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
3e110533 | 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
53e09e0a | 20 | 02110-1301, USA. */ |
a85d7ed0 | 21 | |
a85d7ed0 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
a85d7ed0 NC |
24 | #include "bfdlink.h" |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
a85d7ed0 | 27 | #include "elf/s390.h" |
b4cbbe8f | 28 | #include "elf-s390.h" |
e3e9290d | 29 | #include <stdarg.h> |
a85d7ed0 NC |
30 | |
31 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value | |
32 | from smaller values. Start with zero, widen, *then* decrement. */ | |
33 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
34 | ||
2c3fc389 NC |
35 | static bfd_reloc_status_type |
36 | s390_tls_reloc (bfd *, arelent *, asymbol *, void *, | |
37 | asection *, bfd *, char **); | |
38 | static bfd_reloc_status_type | |
39 | s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *, | |
40 | asection *, bfd *, char **); | |
41 | ||
a85d7ed0 NC |
42 | /* The relocation "howto" table. */ |
43 | static reloc_howto_type elf_howto_table[] = | |
44 | { | |
45 | HOWTO (R_390_NONE, /* type */ | |
46 | 0, /* rightshift */ | |
6346d5ca | 47 | 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */ |
a85d7ed0 | 48 | 0, /* bitsize */ |
b34976b6 | 49 | FALSE, /* pc_relative */ |
a85d7ed0 NC |
50 | 0, /* bitpos */ |
51 | complain_overflow_dont, /* complain_on_overflow */ | |
52 | bfd_elf_generic_reloc, /* special_function */ | |
53 | "R_390_NONE", /* name */ | |
b34976b6 | 54 | FALSE, /* partial_inplace */ |
a85d7ed0 NC |
55 | 0, /* src_mask */ |
56 | 0, /* dst_mask */ | |
b34976b6 AM |
57 | FALSE), /* pcrel_offset */ |
58 | ||
07d6d2b8 AM |
59 | HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, |
60 | bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE), | |
61 | HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
62 | bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE), | |
63 | HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
64 | bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE), | |
65 | HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
66 | bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE), | |
5236c819 | 67 | HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, |
07d6d2b8 | 68 | bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE), |
15f8604d | 69 | HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield, |
07d6d2b8 | 70 | bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE), |
5236c819 | 71 | HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
07d6d2b8 | 72 | bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE), |
5236c819 | 73 | HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, |
07d6d2b8 AM |
74 | bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE), |
75 | HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
76 | bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE), | |
77 | HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
5236c819 | 78 | bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE), |
07d6d2b8 | 79 | HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
5236c819 | 80 | bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE), |
07d6d2b8 | 81 | HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, |
5236c819 | 82 | bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE), |
07d6d2b8 | 83 | HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
5236c819 | 84 | bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE), |
07d6d2b8 AM |
85 | HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, |
86 | bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE), | |
87 | HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
88 | bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE), | |
89 | HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
90 | bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE), | |
91 | HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
92 | bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE), | |
93 | HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
5236c819 MS |
94 | bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE), |
95 | HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
07d6d2b8 | 96 | bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE), |
5236c819 MS |
97 | HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, |
98 | bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE), | |
07d6d2b8 | 99 | HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, |
5236c819 | 100 | bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE), |
07d6d2b8 AM |
101 | HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
102 | bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE), | |
5236c819 | 103 | HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, |
07d6d2b8 | 104 | bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE), |
5236c819 | 105 | HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
07d6d2b8 | 106 | bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE), |
5236c819 | 107 | HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, |
07d6d2b8 | 108 | bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE), |
5236c819 | 109 | HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, |
07d6d2b8 AM |
110 | bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE), |
111 | HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
5236c819 | 112 | bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE), |
07d6d2b8 | 113 | HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
5236c819 MS |
114 | bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE), |
115 | HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
116 | bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE), | |
07d6d2b8 | 117 | HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, |
5236c819 MS |
118 | bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE), |
119 | HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
120 | bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE), | |
121 | HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
122 | bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE), | |
123 | HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
124 | bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE), | |
07d6d2b8 | 125 | HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, |
5236c819 | 126 | bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE), |
07d6d2b8 | 127 | HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
5236c819 | 128 | bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE), |
07d6d2b8 | 129 | HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
5236c819 | 130 | bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE), |
69fc87f1 MS |
131 | HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont, |
132 | s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE), | |
133 | HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
134 | s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE), | |
135 | HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
136 | s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE), | |
137 | EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */ | |
07d6d2b8 | 138 | HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
69fc87f1 MS |
139 | bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE), |
140 | HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
141 | bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE), | |
142 | EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */ | |
143 | HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
144 | bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE), | |
145 | EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */ | |
146 | HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
147 | bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE), | |
148 | EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */ | |
07d6d2b8 | 149 | HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
69fc87f1 MS |
150 | bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE), |
151 | HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
152 | bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE), | |
153 | EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */ | |
07d6d2b8 | 154 | HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
69fc87f1 MS |
155 | bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE), |
156 | EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */ | |
157 | HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
158 | bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE), | |
159 | HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
160 | bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE), | |
161 | HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
162 | bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE), | |
163 | HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
164 | bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE), | |
07d6d2b8 | 165 | HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont, |
bd1ea41b MS |
166 | s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE), |
167 | HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont, | |
168 | s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE), | |
07d6d2b8 | 169 | HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont, |
bd1ea41b MS |
170 | s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE), |
171 | HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont, | |
172 | s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE), | |
470b557a AK |
173 | HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
174 | bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE), | |
07d6d2b8 AM |
175 | HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield, |
176 | bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE), | |
177 | HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield, | |
fb798c50 | 178 | bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE), |
07d6d2b8 AM |
179 | HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield, |
180 | bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE), | |
181 | HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield, | |
fb798c50 | 182 | bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE), |
a85d7ed0 NC |
183 | }; |
184 | ||
185 | /* GNU extension to record C++ vtable hierarchy. */ | |
186 | static reloc_howto_type elf64_s390_vtinherit_howto = | |
b34976b6 | 187 | HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE); |
a85d7ed0 | 188 | static reloc_howto_type elf64_s390_vtentry_howto = |
b34976b6 | 189 | HOWTO (R_390_GNU_VTENTRY, 0,4,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE); |
a85d7ed0 NC |
190 | |
191 | static reloc_howto_type * | |
f3185997 | 192 | elf_s390_reloc_type_lookup (bfd *abfd, |
2c3fc389 | 193 | bfd_reloc_code_real_type code) |
a85d7ed0 | 194 | { |
0451c93c MS |
195 | switch (code) |
196 | { | |
197 | case BFD_RELOC_NONE: | |
198 | return &elf_howto_table[(int) R_390_NONE]; | |
199 | case BFD_RELOC_8: | |
200 | return &elf_howto_table[(int) R_390_8]; | |
201 | case BFD_RELOC_390_12: | |
202 | return &elf_howto_table[(int) R_390_12]; | |
203 | case BFD_RELOC_16: | |
204 | return &elf_howto_table[(int) R_390_16]; | |
205 | case BFD_RELOC_32: | |
206 | return &elf_howto_table[(int) R_390_32]; | |
207 | case BFD_RELOC_CTOR: | |
208 | return &elf_howto_table[(int) R_390_32]; | |
209 | case BFD_RELOC_32_PCREL: | |
210 | return &elf_howto_table[(int) R_390_PC32]; | |
211 | case BFD_RELOC_390_GOT12: | |
212 | return &elf_howto_table[(int) R_390_GOT12]; | |
213 | case BFD_RELOC_32_GOT_PCREL: | |
214 | return &elf_howto_table[(int) R_390_GOT32]; | |
215 | case BFD_RELOC_390_PLT32: | |
216 | return &elf_howto_table[(int) R_390_PLT32]; | |
217 | case BFD_RELOC_390_COPY: | |
218 | return &elf_howto_table[(int) R_390_COPY]; | |
219 | case BFD_RELOC_390_GLOB_DAT: | |
220 | return &elf_howto_table[(int) R_390_GLOB_DAT]; | |
221 | case BFD_RELOC_390_JMP_SLOT: | |
222 | return &elf_howto_table[(int) R_390_JMP_SLOT]; | |
223 | case BFD_RELOC_390_RELATIVE: | |
224 | return &elf_howto_table[(int) R_390_RELATIVE]; | |
225 | case BFD_RELOC_32_GOTOFF: | |
5236c819 | 226 | return &elf_howto_table[(int) R_390_GOTOFF32]; |
0451c93c MS |
227 | case BFD_RELOC_390_GOTPC: |
228 | return &elf_howto_table[(int) R_390_GOTPC]; | |
229 | case BFD_RELOC_390_GOT16: | |
230 | return &elf_howto_table[(int) R_390_GOT16]; | |
231 | case BFD_RELOC_16_PCREL: | |
232 | return &elf_howto_table[(int) R_390_PC16]; | |
fb798c50 AK |
233 | case BFD_RELOC_390_PC12DBL: |
234 | return &elf_howto_table[(int) R_390_PC12DBL]; | |
235 | case BFD_RELOC_390_PLT12DBL: | |
236 | return &elf_howto_table[(int) R_390_PLT12DBL]; | |
0451c93c MS |
237 | case BFD_RELOC_390_PC16DBL: |
238 | return &elf_howto_table[(int) R_390_PC16DBL]; | |
239 | case BFD_RELOC_390_PLT16DBL: | |
240 | return &elf_howto_table[(int) R_390_PLT16DBL]; | |
fb798c50 AK |
241 | case BFD_RELOC_390_PC24DBL: |
242 | return &elf_howto_table[(int) R_390_PC24DBL]; | |
243 | case BFD_RELOC_390_PLT24DBL: | |
244 | return &elf_howto_table[(int) R_390_PLT24DBL]; | |
0451c93c MS |
245 | case BFD_RELOC_390_PC32DBL: |
246 | return &elf_howto_table[(int) R_390_PC32DBL]; | |
247 | case BFD_RELOC_390_PLT32DBL: | |
248 | return &elf_howto_table[(int) R_390_PLT32DBL]; | |
249 | case BFD_RELOC_390_GOTPCDBL: | |
250 | return &elf_howto_table[(int) R_390_GOTPCDBL]; | |
251 | case BFD_RELOC_64: | |
252 | return &elf_howto_table[(int) R_390_64]; | |
253 | case BFD_RELOC_64_PCREL: | |
254 | return &elf_howto_table[(int) R_390_PC64]; | |
255 | case BFD_RELOC_390_GOT64: | |
256 | return &elf_howto_table[(int) R_390_GOT64]; | |
257 | case BFD_RELOC_390_PLT64: | |
258 | return &elf_howto_table[(int) R_390_PLT64]; | |
259 | case BFD_RELOC_390_GOTENT: | |
260 | return &elf_howto_table[(int) R_390_GOTENT]; | |
5236c819 MS |
261 | case BFD_RELOC_16_GOTOFF: |
262 | return &elf_howto_table[(int) R_390_GOTOFF16]; | |
263 | case BFD_RELOC_390_GOTOFF64: | |
264 | return &elf_howto_table[(int) R_390_GOTOFF64]; | |
265 | case BFD_RELOC_390_GOTPLT12: | |
266 | return &elf_howto_table[(int) R_390_GOTPLT12]; | |
267 | case BFD_RELOC_390_GOTPLT16: | |
268 | return &elf_howto_table[(int) R_390_GOTPLT16]; | |
269 | case BFD_RELOC_390_GOTPLT32: | |
270 | return &elf_howto_table[(int) R_390_GOTPLT32]; | |
271 | case BFD_RELOC_390_GOTPLT64: | |
272 | return &elf_howto_table[(int) R_390_GOTPLT64]; | |
273 | case BFD_RELOC_390_GOTPLTENT: | |
274 | return &elf_howto_table[(int) R_390_GOTPLTENT]; | |
275 | case BFD_RELOC_390_PLTOFF16: | |
276 | return &elf_howto_table[(int) R_390_PLTOFF16]; | |
277 | case BFD_RELOC_390_PLTOFF32: | |
278 | return &elf_howto_table[(int) R_390_PLTOFF32]; | |
279 | case BFD_RELOC_390_PLTOFF64: | |
280 | return &elf_howto_table[(int) R_390_PLTOFF64]; | |
69fc87f1 MS |
281 | case BFD_RELOC_390_TLS_LOAD: |
282 | return &elf_howto_table[(int) R_390_TLS_LOAD]; | |
283 | case BFD_RELOC_390_TLS_GDCALL: | |
284 | return &elf_howto_table[(int) R_390_TLS_GDCALL]; | |
285 | case BFD_RELOC_390_TLS_LDCALL: | |
286 | return &elf_howto_table[(int) R_390_TLS_LDCALL]; | |
287 | case BFD_RELOC_390_TLS_GD64: | |
288 | return &elf_howto_table[(int) R_390_TLS_GD64]; | |
289 | case BFD_RELOC_390_TLS_GOTIE12: | |
290 | return &elf_howto_table[(int) R_390_TLS_GOTIE12]; | |
291 | case BFD_RELOC_390_TLS_GOTIE64: | |
292 | return &elf_howto_table[(int) R_390_TLS_GOTIE64]; | |
293 | case BFD_RELOC_390_TLS_LDM64: | |
294 | return &elf_howto_table[(int) R_390_TLS_LDM64]; | |
295 | case BFD_RELOC_390_TLS_IE64: | |
296 | return &elf_howto_table[(int) R_390_TLS_IE64]; | |
297 | case BFD_RELOC_390_TLS_IEENT: | |
298 | return &elf_howto_table[(int) R_390_TLS_IEENT]; | |
299 | case BFD_RELOC_390_TLS_LE64: | |
300 | return &elf_howto_table[(int) R_390_TLS_LE64]; | |
301 | case BFD_RELOC_390_TLS_LDO64: | |
302 | return &elf_howto_table[(int) R_390_TLS_LDO64]; | |
303 | case BFD_RELOC_390_TLS_DTPMOD: | |
304 | return &elf_howto_table[(int) R_390_TLS_DTPMOD]; | |
305 | case BFD_RELOC_390_TLS_DTPOFF: | |
306 | return &elf_howto_table[(int) R_390_TLS_DTPOFF]; | |
307 | case BFD_RELOC_390_TLS_TPOFF: | |
308 | return &elf_howto_table[(int) R_390_TLS_TPOFF]; | |
bd1ea41b MS |
309 | case BFD_RELOC_390_20: |
310 | return &elf_howto_table[(int) R_390_20]; | |
311 | case BFD_RELOC_390_GOT20: | |
312 | return &elf_howto_table[(int) R_390_GOT20]; | |
313 | case BFD_RELOC_390_GOTPLT20: | |
314 | return &elf_howto_table[(int) R_390_GOTPLT20]; | |
315 | case BFD_RELOC_390_TLS_GOTIE20: | |
316 | return &elf_howto_table[(int) R_390_TLS_GOTIE20]; | |
470b557a AK |
317 | case BFD_RELOC_390_IRELATIVE: |
318 | return &elf_howto_table[(int) R_390_IRELATIVE]; | |
5236c819 MS |
319 | case BFD_RELOC_VTABLE_INHERIT: |
320 | return &elf64_s390_vtinherit_howto; | |
321 | case BFD_RELOC_VTABLE_ENTRY: | |
322 | return &elf64_s390_vtentry_howto; | |
0451c93c MS |
323 | default: |
324 | break; | |
325 | } | |
f3185997 NC |
326 | |
327 | /* xgettext:c-format */ | |
e8f5af78 | 328 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, (int) code); |
f3185997 NC |
329 | bfd_set_error (bfd_error_bad_value); |
330 | return NULL; | |
a85d7ed0 NC |
331 | } |
332 | ||
157090f7 AM |
333 | static reloc_howto_type * |
334 | elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
335 | const char *r_name) | |
336 | { | |
337 | unsigned int i; | |
338 | ||
339 | for (i = 0; | |
340 | i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); | |
341 | i++) | |
342 | if (elf_howto_table[i].name != NULL | |
343 | && strcasecmp (elf_howto_table[i].name, r_name) == 0) | |
344 | return &elf_howto_table[i]; | |
345 | ||
0bc7245a JK |
346 | if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0) |
347 | return &elf64_s390_vtinherit_howto; | |
348 | if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0) | |
349 | return &elf64_s390_vtentry_howto; | |
157090f7 AM |
350 | |
351 | return NULL; | |
352 | } | |
353 | ||
a85d7ed0 NC |
354 | /* We need to use ELF64_R_TYPE so we have our own copy of this function, |
355 | and elf64-s390.c has its own copy. */ | |
356 | ||
f3185997 | 357 | static bfd_boolean |
2c3fc389 NC |
358 | elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
359 | arelent *cache_ptr, | |
360 | Elf_Internal_Rela *dst) | |
a85d7ed0 | 361 | { |
d0fb9a8d | 362 | unsigned int r_type = ELF64_R_TYPE(dst->r_info); |
f3185997 | 363 | |
d0fb9a8d | 364 | switch (r_type) |
a85d7ed0 NC |
365 | { |
366 | case R_390_GNU_VTINHERIT: | |
367 | cache_ptr->howto = &elf64_s390_vtinherit_howto; | |
368 | break; | |
369 | ||
370 | case R_390_GNU_VTENTRY: | |
371 | cache_ptr->howto = &elf64_s390_vtentry_howto; | |
372 | break; | |
373 | ||
374 | default: | |
d0fb9a8d JJ |
375 | if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0])) |
376 | { | |
695344c0 | 377 | /* xgettext:c-format */ |
0aa13fee AM |
378 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
379 | abfd, r_type); | |
f3185997 NC |
380 | bfd_set_error (bfd_error_bad_value); |
381 | return FALSE; | |
d0fb9a8d JJ |
382 | } |
383 | cache_ptr->howto = &elf_howto_table[r_type]; | |
99c79b2e | 384 | } |
f3185997 | 385 | return TRUE; |
a85d7ed0 NC |
386 | } |
387 | ||
69fc87f1 MS |
388 | /* A relocation function which doesn't do anything. */ |
389 | static bfd_reloc_status_type | |
2c3fc389 NC |
390 | s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
391 | arelent *reloc_entry, | |
392 | asymbol *symbol ATTRIBUTE_UNUSED, | |
393 | void * data ATTRIBUTE_UNUSED, | |
394 | asection *input_section, | |
395 | bfd *output_bfd, | |
396 | char **error_message ATTRIBUTE_UNUSED) | |
69fc87f1 MS |
397 | { |
398 | if (output_bfd) | |
399 | reloc_entry->address += input_section->output_offset; | |
400 | return bfd_reloc_ok; | |
401 | } | |
402 | ||
bd1ea41b MS |
403 | /* Handle the large displacement relocs. */ |
404 | static bfd_reloc_status_type | |
2c3fc389 NC |
405 | s390_elf_ldisp_reloc (bfd *abfd, |
406 | arelent *reloc_entry, | |
407 | asymbol *symbol, | |
408 | void * data, | |
409 | asection *input_section, | |
410 | bfd *output_bfd, | |
411 | char **error_message ATTRIBUTE_UNUSED) | |
bd1ea41b MS |
412 | { |
413 | reloc_howto_type *howto = reloc_entry->howto; | |
414 | bfd_vma relocation; | |
415 | bfd_vma insn; | |
416 | ||
417 | if (output_bfd != (bfd *) NULL | |
418 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
419 | && (! howto->partial_inplace | |
420 | || reloc_entry->addend == 0)) | |
421 | { | |
422 | reloc_entry->address += input_section->output_offset; | |
423 | return bfd_reloc_ok; | |
424 | } | |
425 | if (output_bfd != NULL) | |
426 | return bfd_reloc_continue; | |
427 | ||
07515404 | 428 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
bd1ea41b MS |
429 | return bfd_reloc_outofrange; |
430 | ||
431 | relocation = (symbol->value | |
432 | + symbol->section->output_section->vma | |
433 | + symbol->section->output_offset); | |
434 | relocation += reloc_entry->addend; | |
435 | if (howto->pc_relative) | |
436 | { | |
437 | relocation -= (input_section->output_section->vma | |
438 | + input_section->output_offset); | |
439 | relocation -= reloc_entry->address; | |
440 | } | |
441 | ||
68ffbac6 | 442 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
bd1ea41b MS |
443 | insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4; |
444 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
445 | ||
446 | if ((bfd_signed_vma) relocation < - 0x80000 | |
447 | || (bfd_signed_vma) relocation > 0x7ffff) | |
448 | return bfd_reloc_overflow; | |
449 | else | |
450 | return bfd_reloc_ok; | |
451 | } | |
452 | ||
b34976b6 | 453 | static bfd_boolean |
2c3fc389 | 454 | elf_s390_is_local_label_name (bfd *abfd, const char *name) |
a85d7ed0 NC |
455 | { |
456 | if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L')) | |
b34976b6 | 457 | return TRUE; |
a85d7ed0 NC |
458 | |
459 | return _bfd_elf_is_local_label_name (abfd, name); | |
460 | } | |
461 | ||
462 | /* Functions for the 390 ELF linker. */ | |
463 | ||
464 | /* The name of the dynamic interpreter. This is put in the .interp | |
465 | section. */ | |
466 | ||
87049b0d | 467 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1" |
a85d7ed0 | 468 | |
64285810 MS |
469 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
470 | copying dynamic variables from a shared lib into an app's dynbss | |
471 | section, and instead use a dynamic relocation to point into the | |
472 | shared lib. */ | |
473 | #define ELIMINATE_COPY_RELOCS 1 | |
474 | ||
a85d7ed0 NC |
475 | /* The size in bytes of the first entry in the procedure linkage table. */ |
476 | #define PLT_FIRST_ENTRY_SIZE 32 | |
477 | /* The size in bytes of an entry in the procedure linkage table. */ | |
99c79b2e | 478 | #define PLT_ENTRY_SIZE 32 |
a85d7ed0 NC |
479 | |
480 | #define GOT_ENTRY_SIZE 8 | |
481 | ||
470b557a AK |
482 | #define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela) |
483 | ||
a85d7ed0 NC |
484 | /* The first three entries in a procedure linkage table are reserved, |
485 | and the initial contents are unimportant (we zero them out). | |
486 | Subsequent entries look like this. See the SVR4 ABI 386 | |
487 | supplement to see how this works. */ | |
488 | ||
489 | /* For the s390, simple addr offset can only be 0 - 4096. | |
490 | To use the full 16777216 TB address space, several instructions | |
491 | are needed to load an address in a register and execute | |
492 | a branch( or just saving the address) | |
493 | ||
99c79b2e | 494 | Furthermore, only r 0 and 1 are free to use!!! */ |
a85d7ed0 NC |
495 | |
496 | /* The first 3 words in the GOT are then reserved. | |
497 | Word 0 is the address of the dynamic table. | |
498 | Word 1 is a pointer to a structure describing the object | |
499 | Word 2 is used to point to the loader entry address. | |
500 | ||
501 | The code for PLT entries looks like this: | |
502 | ||
503 | The GOT holds the address in the PLT to be executed. | |
504 | The loader then gets: | |
3b67f094 MK |
505 | 48(15) = Pointer to the structure describing the object. |
506 | 56(15) = Offset in symbol table | |
a85d7ed0 NC |
507 | The loader must then find the module where the function is |
508 | and insert the address in the GOT. | |
509 | ||
510 | PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1 | |
07d6d2b8 AM |
511 | LG 1,0(1) # 6 bytes Load address from GOT in r1 |
512 | BCR 15,1 # 2 bytes Jump to address | |
513 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
514 | LGF 1,12(1) # 6 bytes Load offset in symbl table in r1 | |
515 | BRCL 15,-x # 6 bytes Jump to start of PLT | |
516 | .long ? # 4 bytes offset into .rela.plt | |
a85d7ed0 NC |
517 | |
518 | Total = 32 bytes per PLT entry | |
519 | Fixup at offset 2: relative address to GOT entry | |
520 | Fixup at offset 22: relative branch to PLT0 | |
a7e28bbe | 521 | Fixup at offset 28: 32 bit offset into .rela.plt |
a85d7ed0 | 522 | |
a7e28bbe AK |
523 | A 32 bit offset into the symbol table is enough. It allows for |
524 | .rela.plt sections up to a size of 2 gigabyte. A single dynamic | |
525 | object (the main program, any shared library) is limited to 4GB in | |
526 | size. Having a .rela.plt of 2GB would already make the .plt | |
527 | section bigger than 8GB. */ | |
a85d7ed0 | 528 | |
9aa17453 AK |
529 | static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] = |
530 | { | |
07d6d2b8 AM |
531 | 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */ |
532 | 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */ | |
533 | 0x07, 0xf1, /* br %r1 */ | |
534 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
535 | 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */ | |
536 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */ | |
537 | 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */ | |
9aa17453 | 538 | }; |
a85d7ed0 NC |
539 | |
540 | /* The first PLT entry pushes the offset into the symbol table | |
a7e28bbe AK |
541 | from R1 onto the stack at 56(15) and the loader object info |
542 | at 48(15), loads the loader address in R1 and jumps to it. */ | |
a85d7ed0 NC |
543 | |
544 | /* The first entry in the PLT: | |
545 | ||
546 | PLT0: | |
547 | STG 1,56(15) # r1 contains the offset into the symbol table | |
548 | LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table | |
549 | MVC 48(8,15),8(1) # move loader ino (object struct address) to stack | |
550 | LG 1,16(1) # get entry address of loader | |
551 | BCR 15,1 # jump to loader | |
552 | ||
553 | Fixup at offset 8: relative address to start of GOT. */ | |
554 | ||
9aa17453 AK |
555 | static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] = |
556 | { | |
07d6d2b8 AM |
557 | 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */ |
558 | 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */ | |
559 | 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */ | |
560 | 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */ | |
561 | 0x07, 0xf1, /* br %r1 */ | |
562 | 0x07, 0x00, /* nopr %r0 */ | |
563 | 0x07, 0x00, /* nopr %r0 */ | |
564 | 0x07, 0x00 /* nopr %r0 */ | |
9aa17453 | 565 | }; |
a85d7ed0 | 566 | |
a85d7ed0 NC |
567 | |
568 | /* s390 ELF linker hash entry. */ | |
569 | ||
570 | struct elf_s390_link_hash_entry | |
571 | { | |
0451c93c | 572 | struct elf_link_hash_entry elf; |
a85d7ed0 | 573 | |
0451c93c | 574 | /* Track dynamic relocs copied for this symbol. */ |
00d8c7a9 | 575 | struct elf_dyn_relocs *dyn_relocs; |
5236c819 MS |
576 | |
577 | /* Number of GOTPLT references for a function. */ | |
578 | bfd_signed_vma gotplt_refcount; | |
69fc87f1 MS |
579 | |
580 | #define GOT_UNKNOWN 0 | |
581 | #define GOT_NORMAL 1 | |
582 | #define GOT_TLS_GD 2 | |
583 | #define GOT_TLS_IE 3 | |
584 | #define GOT_TLS_IE_NLT 3 | |
585 | unsigned char tls_type; | |
470b557a AK |
586 | |
587 | /* For pointer equality reasons we might need to change the symbol | |
588 | type from STT_GNU_IFUNC to STT_FUNC together with its value and | |
589 | section entry. So after alloc_dynrelocs only these values should | |
590 | be used. In order to check whether a symbol is IFUNC use | |
591 | s390_is_ifunc_symbol_p. */ | |
592 | bfd_vma ifunc_resolver_address; | |
593 | asection *ifunc_resolver_section; | |
a85d7ed0 NC |
594 | }; |
595 | ||
69fc87f1 MS |
596 | #define elf_s390_hash_entry(ent) \ |
597 | ((struct elf_s390_link_hash_entry *)(ent)) | |
598 | ||
470b557a AK |
599 | /* This structure represents an entry in the local PLT list needed for |
600 | local IFUNC symbols. */ | |
601 | struct plt_entry | |
602 | { | |
603 | /* The section of the local symbol. | |
604 | Set in relocate_section and used in finish_dynamic_sections. */ | |
605 | asection *sec; | |
606 | ||
607 | union | |
608 | { | |
609 | bfd_signed_vma refcount; | |
610 | bfd_vma offset; | |
611 | } plt; | |
612 | }; | |
613 | ||
0ffa91dd NC |
614 | /* NOTE: Keep this structure in sync with |
615 | the one declared in elf32-s390.c. */ | |
69fc87f1 MS |
616 | struct elf_s390_obj_tdata |
617 | { | |
618 | struct elf_obj_tdata root; | |
619 | ||
470b557a AK |
620 | /* A local PLT is needed for ifunc symbols. */ |
621 | struct plt_entry *local_plt; | |
622 | ||
0ffa91dd | 623 | /* TLS type for each local got entry. */ |
69fc87f1 MS |
624 | char *local_got_tls_type; |
625 | }; | |
626 | ||
627 | #define elf_s390_tdata(abfd) \ | |
628 | ((struct elf_s390_obj_tdata *) (abfd)->tdata.any) | |
629 | ||
470b557a AK |
630 | #define elf_s390_local_plt(abfd) \ |
631 | (elf_s390_tdata (abfd)->local_plt) | |
632 | ||
69fc87f1 MS |
633 | #define elf_s390_local_got_tls_type(abfd) \ |
634 | (elf_s390_tdata (abfd)->local_got_tls_type) | |
635 | ||
0ffa91dd NC |
636 | #define is_s390_elf(bfd) \ |
637 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
638 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 639 | && elf_object_id (bfd) == S390_ELF_DATA) |
0ffa91dd | 640 | |
69fc87f1 | 641 | static bfd_boolean |
62d7a5f6 | 642 | elf_s390_mkobject (bfd *abfd) |
69fc87f1 | 643 | { |
0ffa91dd | 644 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata), |
4dfe6ac6 | 645 | S390_ELF_DATA); |
69fc87f1 MS |
646 | } |
647 | ||
648 | static bfd_boolean | |
2c3fc389 | 649 | elf_s390_object_p (bfd *abfd) |
69fc87f1 | 650 | { |
69fc87f1 MS |
651 | /* Set the right machine number for an s390 elf32 file. */ |
652 | return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64); | |
653 | } | |
654 | ||
a85d7ed0 NC |
655 | /* s390 ELF linker hash table. */ |
656 | ||
657 | struct elf_s390_link_hash_table | |
658 | { | |
0451c93c | 659 | struct elf_link_hash_table elf; |
a85d7ed0 | 660 | |
0451c93c | 661 | /* Short-cuts to get to dynamic linker sections. */ |
470b557a | 662 | asection *irelifunc; |
ec338859 | 663 | |
69fc87f1 MS |
664 | union { |
665 | bfd_signed_vma refcount; | |
666 | bfd_vma offset; | |
667 | } tls_ldm_got; | |
668 | ||
87d72d41 AM |
669 | /* Small local sym cache. */ |
670 | struct sym_cache sym_cache; | |
b4cbbe8f AK |
671 | |
672 | /* Options passed from the linker. */ | |
673 | struct s390_elf_params *params; | |
0451c93c | 674 | }; |
a85d7ed0 NC |
675 | |
676 | /* Get the s390 ELF linker hash table from a link_info structure. */ | |
677 | ||
ceada896 AA |
678 | #define elf_s390_hash_table(p) \ |
679 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ | |
680 | == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL) | |
a85d7ed0 | 681 | |
470b557a AK |
682 | #define ELF64 1 |
683 | #include "elf-s390-common.c" | |
684 | ||
a85d7ed0 NC |
685 | /* Create an entry in an s390 ELF linker hash table. */ |
686 | ||
687 | static struct bfd_hash_entry * | |
2c3fc389 NC |
688 | link_hash_newfunc (struct bfd_hash_entry *entry, |
689 | struct bfd_hash_table *table, | |
690 | const char *string) | |
a85d7ed0 | 691 | { |
a85d7ed0 NC |
692 | /* Allocate the structure if it has not already been allocated by a |
693 | subclass. */ | |
0451c93c MS |
694 | if (entry == NULL) |
695 | { | |
696 | entry = bfd_hash_allocate (table, | |
697 | sizeof (struct elf_s390_link_hash_entry)); | |
698 | if (entry == NULL) | |
699 | return entry; | |
700 | } | |
a85d7ed0 NC |
701 | |
702 | /* Call the allocation method of the superclass. */ | |
0451c93c MS |
703 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
704 | if (entry != NULL) | |
a85d7ed0 | 705 | { |
0451c93c MS |
706 | struct elf_s390_link_hash_entry *eh; |
707 | ||
708 | eh = (struct elf_s390_link_hash_entry *) entry; | |
709 | eh->dyn_relocs = NULL; | |
5236c819 | 710 | eh->gotplt_refcount = 0; |
69fc87f1 | 711 | eh->tls_type = GOT_UNKNOWN; |
470b557a AK |
712 | eh->ifunc_resolver_address = 0; |
713 | eh->ifunc_resolver_section = NULL; | |
a85d7ed0 NC |
714 | } |
715 | ||
0451c93c | 716 | return entry; |
a85d7ed0 NC |
717 | } |
718 | ||
719 | /* Create an s390 ELF linker hash table. */ | |
720 | ||
721 | static struct bfd_link_hash_table * | |
2c3fc389 | 722 | elf_s390_link_hash_table_create (bfd *abfd) |
a85d7ed0 NC |
723 | { |
724 | struct elf_s390_link_hash_table *ret; | |
dc810e39 | 725 | bfd_size_type amt = sizeof (struct elf_s390_link_hash_table); |
a85d7ed0 | 726 | |
7bf52ea2 | 727 | ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt); |
0451c93c | 728 | if (ret == NULL) |
a85d7ed0 NC |
729 | return NULL; |
730 | ||
66eb6687 | 731 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
732 | sizeof (struct elf_s390_link_hash_entry), |
733 | S390_ELF_DATA)) | |
a85d7ed0 | 734 | { |
e2d34d7d | 735 | free (ret); |
a85d7ed0 NC |
736 | return NULL; |
737 | } | |
738 | ||
0451c93c MS |
739 | return &ret->elf.root; |
740 | } | |
741 | ||
0451c93c MS |
742 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
743 | ||
744 | static void | |
2c3fc389 NC |
745 | elf_s390_copy_indirect_symbol (struct bfd_link_info *info, |
746 | struct elf_link_hash_entry *dir, | |
747 | struct elf_link_hash_entry *ind) | |
0451c93c MS |
748 | { |
749 | struct elf_s390_link_hash_entry *edir, *eind; | |
750 | ||
751 | edir = (struct elf_s390_link_hash_entry *) dir; | |
752 | eind = (struct elf_s390_link_hash_entry *) ind; | |
753 | ||
754 | if (eind->dyn_relocs != NULL) | |
755 | { | |
756 | if (edir->dyn_relocs != NULL) | |
757 | { | |
00d8c7a9 AK |
758 | struct elf_dyn_relocs **pp; |
759 | struct elf_dyn_relocs *p; | |
0451c93c | 760 | |
fcfa13d2 | 761 | /* Add reloc counts against the indirect sym to the direct sym |
0451c93c MS |
762 | list. Merge any entries against the same section. */ |
763 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
764 | { | |
00d8c7a9 | 765 | struct elf_dyn_relocs *q; |
0451c93c MS |
766 | |
767 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
768 | if (q->sec == p->sec) | |
769 | { | |
770 | q->pc_count += p->pc_count; | |
771 | q->count += p->count; | |
772 | *pp = p->next; | |
773 | break; | |
774 | } | |
775 | if (q == NULL) | |
776 | pp = &p->next; | |
777 | } | |
778 | *pp = edir->dyn_relocs; | |
779 | } | |
780 | ||
781 | edir->dyn_relocs = eind->dyn_relocs; | |
782 | eind->dyn_relocs = NULL; | |
783 | } | |
784 | ||
69fc87f1 MS |
785 | if (ind->root.type == bfd_link_hash_indirect |
786 | && dir->got.refcount <= 0) | |
787 | { | |
788 | edir->tls_type = eind->tls_type; | |
789 | eind->tls_type = GOT_UNKNOWN; | |
790 | } | |
791 | ||
64285810 MS |
792 | if (ELIMINATE_COPY_RELOCS |
793 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
794 | && dir->dynamic_adjusted) |
795 | { | |
796 | /* If called to transfer flags for a weakdef during processing | |
797 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
798 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
e81830c5 AM |
799 | if (dir->versioned != versioned_hidden) |
800 | dir->ref_dynamic |= ind->ref_dynamic; | |
f5385ebf AM |
801 | dir->ref_regular |= ind->ref_regular; |
802 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
803 | dir->needs_plt |= ind->needs_plt; | |
804 | } | |
64285810 | 805 | else |
fcfa13d2 | 806 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
0451c93c | 807 | } |
a85d7ed0 | 808 | |
69fc87f1 | 809 | static int |
2c3fc389 NC |
810 | elf_s390_tls_transition (struct bfd_link_info *info, |
811 | int r_type, | |
812 | int is_local) | |
69fc87f1 | 813 | { |
0e1862bb | 814 | if (bfd_link_pic (info)) |
69fc87f1 MS |
815 | return r_type; |
816 | ||
817 | switch (r_type) | |
818 | { | |
819 | case R_390_TLS_GD64: | |
820 | case R_390_TLS_IE64: | |
821 | if (is_local) | |
822 | return R_390_TLS_LE64; | |
823 | return R_390_TLS_IE64; | |
824 | case R_390_TLS_GOTIE64: | |
825 | if (is_local) | |
826 | return R_390_TLS_LE64; | |
827 | return R_390_TLS_GOTIE64; | |
828 | case R_390_TLS_LDM64: | |
829 | return R_390_TLS_LE64; | |
830 | } | |
831 | ||
832 | return r_type; | |
833 | } | |
834 | ||
a85d7ed0 NC |
835 | /* Look through the relocs for a section during the first phase, and |
836 | allocate space in the global offset table or procedure linkage | |
837 | table. */ | |
838 | ||
b34976b6 | 839 | static bfd_boolean |
4dfe6ac6 NC |
840 | elf_s390_check_relocs (bfd *abfd, |
841 | struct bfd_link_info *info, | |
842 | asection *sec, | |
843 | const Elf_Internal_Rela *relocs) | |
a85d7ed0 | 844 | { |
0451c93c | 845 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
846 | Elf_Internal_Shdr *symtab_hdr; |
847 | struct elf_link_hash_entry **sym_hashes; | |
a85d7ed0 NC |
848 | const Elf_Internal_Rela *rel; |
849 | const Elf_Internal_Rela *rel_end; | |
a85d7ed0 | 850 | asection *sreloc; |
5236c819 | 851 | bfd_signed_vma *local_got_refcounts; |
69fc87f1 | 852 | int tls_type, old_tls_type; |
a85d7ed0 | 853 | |
0e1862bb | 854 | if (bfd_link_relocatable (info)) |
b34976b6 | 855 | return TRUE; |
a85d7ed0 | 856 | |
0ffa91dd NC |
857 | BFD_ASSERT (is_s390_elf (abfd)); |
858 | ||
0451c93c | 859 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
860 | if (htab == NULL) |
861 | return FALSE; | |
862 | ||
0ffa91dd | 863 | symtab_hdr = &elf_symtab_hdr (abfd); |
a85d7ed0 | 864 | sym_hashes = elf_sym_hashes (abfd); |
5236c819 | 865 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 866 | |
a85d7ed0 NC |
867 | sreloc = NULL; |
868 | ||
869 | rel_end = relocs + sec->reloc_count; | |
870 | for (rel = relocs; rel < rel_end; rel++) | |
871 | { | |
69fc87f1 | 872 | unsigned int r_type; |
d42c267e | 873 | unsigned int r_symndx; |
a85d7ed0 | 874 | struct elf_link_hash_entry *h; |
470b557a | 875 | Elf_Internal_Sym *isym; |
a85d7ed0 NC |
876 | |
877 | r_symndx = ELF64_R_SYM (rel->r_info); | |
878 | ||
0451c93c MS |
879 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
880 | { | |
695344c0 | 881 | /* xgettext:c-format */ |
871b3ab2 | 882 | _bfd_error_handler (_("%pB: bad symbol index: %d"), |
4eca0228 | 883 | abfd, r_symndx); |
b34976b6 | 884 | return FALSE; |
0451c93c MS |
885 | } |
886 | ||
a85d7ed0 | 887 | if (r_symndx < symtab_hdr->sh_info) |
470b557a AK |
888 | { |
889 | /* A local symbol. */ | |
890 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
891 | abfd, r_symndx); | |
892 | if (isym == NULL) | |
893 | return FALSE; | |
894 | ||
895 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
896 | { | |
897 | struct plt_entry *plt; | |
898 | ||
0cb79d69 AK |
899 | if (htab->elf.dynobj == NULL) |
900 | htab->elf.dynobj = abfd; | |
901 | ||
470b557a AK |
902 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) |
903 | return FALSE; | |
904 | ||
905 | if (local_got_refcounts == NULL) | |
906 | { | |
907 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) | |
908 | return FALSE; | |
909 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
910 | } | |
911 | plt = elf_s390_local_plt (abfd); | |
912 | plt[r_symndx].plt.refcount++; | |
913 | } | |
914 | h = NULL; | |
915 | } | |
a85d7ed0 | 916 | else |
973a3492 L |
917 | { |
918 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
919 | while (h->root.type == bfd_link_hash_indirect | |
920 | || h->root.type == bfd_link_hash_warning) | |
921 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
922 | } | |
a85d7ed0 | 923 | |
5236c819 MS |
924 | /* Create got section and local_got_refcounts array if they |
925 | are needed. */ | |
69fc87f1 MS |
926 | r_type = elf_s390_tls_transition (info, |
927 | ELF64_R_TYPE (rel->r_info), | |
928 | h == NULL); | |
929 | switch (r_type) | |
a85d7ed0 NC |
930 | { |
931 | case R_390_GOT12: | |
947216bf | 932 | case R_390_GOT16: |
bd1ea41b | 933 | case R_390_GOT20: |
a85d7ed0 NC |
934 | case R_390_GOT32: |
935 | case R_390_GOT64: | |
936 | case R_390_GOTENT: | |
5236c819 MS |
937 | case R_390_GOTPLT12: |
938 | case R_390_GOTPLT16: | |
bd1ea41b | 939 | case R_390_GOTPLT20: |
5236c819 MS |
940 | case R_390_GOTPLT32: |
941 | case R_390_GOTPLT64: | |
942 | case R_390_GOTPLTENT: | |
69fc87f1 MS |
943 | case R_390_TLS_GD64: |
944 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 945 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
946 | case R_390_TLS_GOTIE64: |
947 | case R_390_TLS_IEENT: | |
948 | case R_390_TLS_IE64: | |
949 | case R_390_TLS_LDM64: | |
5236c819 MS |
950 | if (h == NULL |
951 | && local_got_refcounts == NULL) | |
a85d7ed0 | 952 | { |
470b557a | 953 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) |
5236c819 | 954 | return FALSE; |
470b557a | 955 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 956 | } |
470b557a | 957 | |
5236c819 MS |
958 | /* Fall through. */ |
959 | case R_390_GOTOFF16: | |
960 | case R_390_GOTOFF32: | |
961 | case R_390_GOTOFF64: | |
0451c93c MS |
962 | case R_390_GOTPC: |
963 | case R_390_GOTPCDBL: | |
f41345a7 | 964 | if (htab->elf.sgot == NULL) |
0451c93c MS |
965 | { |
966 | if (htab->elf.dynobj == NULL) | |
967 | htab->elf.dynobj = abfd; | |
ce558b89 | 968 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) |
b34976b6 | 969 | return FALSE; |
0451c93c | 970 | } |
5236c819 MS |
971 | } |
972 | ||
470b557a AK |
973 | if (h != NULL) |
974 | { | |
975 | if (htab->elf.dynobj == NULL) | |
976 | htab->elf.dynobj = abfd; | |
977 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
978 | return FALSE; | |
979 | ||
980 | /* Make sure an IFUNC symbol defined in a non-shared object | |
981 | always gets a PLT slot. */ | |
982 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
983 | { | |
984 | /* The symbol is called by the dynamic loader in order | |
985 | to resolve the relocation. So it is in fact also | |
986 | referenced. */ | |
987 | h->ref_regular = 1; | |
988 | h->needs_plt = 1; | |
989 | } | |
990 | } | |
991 | ||
69fc87f1 | 992 | switch (r_type) |
5236c819 | 993 | { |
5236c819 MS |
994 | case R_390_GOTPC: |
995 | case R_390_GOTPCDBL: | |
470b557a AK |
996 | /* These relocs do not need a GOT slot. They just load the |
997 | GOT pointer itself or address something else relative to | |
998 | the GOT. Since the GOT pointer has been set up above we | |
999 | are done. */ | |
0451c93c | 1000 | break; |
d47b13e0 AK |
1001 | case R_390_GOTOFF16: |
1002 | case R_390_GOTOFF32: | |
1003 | case R_390_GOTOFF64: | |
1004 | if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular) | |
1005 | break; | |
1a0670f3 | 1006 | /* Fall through. */ |
ec338859 | 1007 | |
fb798c50 | 1008 | case R_390_PLT12DBL: |
947216bf | 1009 | case R_390_PLT16DBL: |
fb798c50 | 1010 | case R_390_PLT24DBL: |
a85d7ed0 NC |
1011 | case R_390_PLT32: |
1012 | case R_390_PLT32DBL: | |
1013 | case R_390_PLT64: | |
5236c819 MS |
1014 | case R_390_PLTOFF16: |
1015 | case R_390_PLTOFF32: | |
1016 | case R_390_PLTOFF64: | |
a85d7ed0 | 1017 | /* This symbol requires a procedure linkage table entry. We |
947216bf AM |
1018 | actually build the entry in adjust_dynamic_symbol, |
1019 | because this might be a case of linking PIC code which is | |
1020 | never referenced by a dynamic object, in which case we | |
1021 | don't need to generate a procedure linkage table entry | |
1022 | after all. */ | |
ec338859 | 1023 | |
a85d7ed0 | 1024 | /* If this is a local symbol, we resolve it directly without |
947216bf | 1025 | creating a procedure linkage table entry. */ |
5236c819 MS |
1026 | if (h != NULL) |
1027 | { | |
f5385ebf | 1028 | h->needs_plt = 1; |
5236c819 MS |
1029 | h->plt.refcount += 1; |
1030 | } | |
1031 | break; | |
ec338859 | 1032 | |
5236c819 MS |
1033 | case R_390_GOTPLT12: |
1034 | case R_390_GOTPLT16: | |
bd1ea41b | 1035 | case R_390_GOTPLT20: |
5236c819 MS |
1036 | case R_390_GOTPLT32: |
1037 | case R_390_GOTPLT64: | |
1038 | case R_390_GOTPLTENT: | |
1039 | /* This symbol requires either a procedure linkage table entry | |
1040 | or an entry in the local got. We actually build the entry | |
1041 | in adjust_dynamic_symbol because whether this is really a | |
1042 | global reference can change and with it the fact if we have | |
1043 | to create a plt entry or a local got entry. To be able to | |
1044 | make a once global symbol a local one we have to keep track | |
1045 | of the number of gotplt references that exist for this | |
1046 | symbol. */ | |
1047 | if (h != NULL) | |
1048 | { | |
1049 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++; | |
f5385ebf | 1050 | h->needs_plt = 1; |
5236c819 MS |
1051 | h->plt.refcount += 1; |
1052 | } | |
69fc87f1 MS |
1053 | else |
1054 | local_got_refcounts[r_symndx] += 1; | |
1055 | break; | |
1056 | ||
1057 | case R_390_TLS_LDM64: | |
1058 | htab->tls_ldm_got.refcount += 1; | |
1059 | break; | |
1060 | ||
1061 | case R_390_TLS_IE64: | |
1062 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1063 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1064 | case R_390_TLS_GOTIE64: |
1065 | case R_390_TLS_IEENT: | |
0e1862bb | 1066 | if (bfd_link_pic (info)) |
69fc87f1 MS |
1067 | info->flags |= DF_STATIC_TLS; |
1068 | /* Fall through */ | |
1069 | ||
1070 | case R_390_GOT12: | |
26e41594 | 1071 | case R_390_GOT16: |
bd1ea41b | 1072 | case R_390_GOT20: |
69fc87f1 MS |
1073 | case R_390_GOT32: |
1074 | case R_390_GOT64: | |
1075 | case R_390_GOTENT: | |
1076 | case R_390_TLS_GD64: | |
1077 | /* This symbol requires a global offset table entry. */ | |
1078 | switch (r_type) | |
1079 | { | |
1080 | default: | |
1081 | case R_390_GOT12: | |
1082 | case R_390_GOT16: | |
bd1ea41b | 1083 | case R_390_GOT20: |
69fc87f1 MS |
1084 | case R_390_GOT32: |
1085 | case R_390_GOTENT: | |
1086 | tls_type = GOT_NORMAL; | |
1087 | break; | |
1088 | case R_390_TLS_GD64: | |
1089 | tls_type = GOT_TLS_GD; | |
1090 | break; | |
1091 | case R_390_TLS_IE64: | |
1092 | case R_390_TLS_GOTIE64: | |
1093 | tls_type = GOT_TLS_IE; | |
1094 | break; | |
1095 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1096 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1097 | case R_390_TLS_IEENT: |
1098 | tls_type = GOT_TLS_IE_NLT; | |
1099 | break; | |
1100 | } | |
1101 | ||
1102 | if (h != NULL) | |
1103 | { | |
1104 | h->got.refcount += 1; | |
1105 | old_tls_type = elf_s390_hash_entry(h)->tls_type; | |
1106 | } | |
5236c819 MS |
1107 | else |
1108 | { | |
1109 | local_got_refcounts[r_symndx] += 1; | |
69fc87f1 | 1110 | old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx]; |
5236c819 | 1111 | } |
69fc87f1 MS |
1112 | /* If a TLS symbol is accessed using IE at least once, |
1113 | there is no point to use dynamic model for it. */ | |
1114 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN) | |
1115 | { | |
1116 | if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL) | |
1117 | { | |
4eca0228 | 1118 | _bfd_error_handler |
695344c0 | 1119 | /* xgettext:c-format */ |
871b3ab2 | 1120 | (_("%pB: `%s' accessed both as normal and thread local symbol"), |
d003868e | 1121 | abfd, h->root.root.string); |
69fc87f1 MS |
1122 | return FALSE; |
1123 | } | |
1124 | if (old_tls_type > tls_type) | |
1125 | tls_type = old_tls_type; | |
1126 | } | |
1127 | ||
1128 | if (old_tls_type != tls_type) | |
1129 | { | |
1130 | if (h != NULL) | |
1131 | elf_s390_hash_entry (h)->tls_type = tls_type; | |
1132 | else | |
1133 | elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1134 | } | |
1135 | ||
1136 | if (r_type != R_390_TLS_IE64) | |
1137 | break; | |
1138 | /* Fall through */ | |
1139 | ||
1140 | case R_390_TLS_LE64: | |
e00d879a AK |
1141 | /* For static linking and executables this reloc will be |
1142 | calculated at linktime otherwise a TLS_TPOFF runtime | |
1143 | reloc will be generated. */ | |
0e1862bb | 1144 | if (r_type == R_390_TLS_LE64 && bfd_link_pie (info)) |
e00d879a AK |
1145 | break; |
1146 | ||
0e1862bb | 1147 | if (!bfd_link_pic (info)) |
69fc87f1 MS |
1148 | break; |
1149 | info->flags |= DF_STATIC_TLS; | |
1150 | /* Fall through */ | |
ec338859 | 1151 | |
947216bf AM |
1152 | case R_390_8: |
1153 | case R_390_16: | |
a85d7ed0 NC |
1154 | case R_390_32: |
1155 | case R_390_64: | |
fb798c50 | 1156 | case R_390_PC12DBL: |
947216bf AM |
1157 | case R_390_PC16: |
1158 | case R_390_PC16DBL: | |
fb798c50 | 1159 | case R_390_PC24DBL: |
a85d7ed0 NC |
1160 | case R_390_PC32: |
1161 | case R_390_PC32DBL: | |
1162 | case R_390_PC64: | |
99ba5125 | 1163 | if (h != NULL && bfd_link_executable (info)) |
0451c93c MS |
1164 | { |
1165 | /* If this reloc is in a read-only section, we might | |
1166 | need a copy reloc. We can't check reliably at this | |
1167 | stage whether the section is read-only, as input | |
1168 | sections have not yet been mapped to output sections. | |
1169 | Tentatively set the flag for now, and correct in | |
1170 | adjust_dynamic_symbol. */ | |
f5385ebf | 1171 | h->non_got_ref = 1; |
ec338859 | 1172 | |
0e1862bb | 1173 | if (!bfd_link_pic (info)) |
470b557a AK |
1174 | { |
1175 | /* We may need a .plt entry if the function this reloc | |
1176 | refers to is in a shared lib. */ | |
1177 | h->plt.refcount += 1; | |
1178 | } | |
0451c93c | 1179 | } |
ec338859 | 1180 | |
a85d7ed0 | 1181 | /* If we are creating a shared library, and this is a reloc |
0451c93c MS |
1182 | against a global symbol, or a non PC relative reloc |
1183 | against a local symbol, then we need to copy the reloc | |
1184 | into the shared library. However, if we are linking with | |
1185 | -Bsymbolic, we do not need to copy a reloc against a | |
1186 | global symbol which is defined in an object we are | |
1187 | including in the link (i.e., DEF_REGULAR is set). At | |
1188 | this point we have not seen all the input files, so it is | |
1189 | possible that DEF_REGULAR is not set now but will be set | |
1190 | later (it is never cleared). In case of a weak definition, | |
1191 | DEF_REGULAR may be cleared later by a strong definition in | |
1192 | a shared library. We account for that possibility below by | |
1193 | storing information in the relocs_copied field of the hash | |
1194 | table entry. A similar situation occurs when creating | |
1195 | shared libraries and symbol visibility changes render the | |
1196 | symbol local. | |
1197 | ||
1198 | If on the other hand, we are creating an executable, we | |
1199 | may need to keep relocations for symbols satisfied by a | |
1200 | dynamic library if we manage to avoid copy relocs for the | |
1201 | symbol. */ | |
0e1862bb | 1202 | if ((bfd_link_pic (info) |
0451c93c MS |
1203 | && (sec->flags & SEC_ALLOC) != 0 |
1204 | && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16 | |
fb798c50 | 1205 | && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL |
0451c93c | 1206 | && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL |
fb798c50 | 1207 | && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL |
0451c93c MS |
1208 | && ELF64_R_TYPE (rel->r_info) != R_390_PC32 |
1209 | && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL | |
1210 | && ELF64_R_TYPE (rel->r_info) != R_390_PC64) | |
1211 | || (h != NULL | |
8c21ca21 | 1212 | && (! SYMBOLIC_BIND (info, h) |
0451c93c | 1213 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1214 | || !h->def_regular)))) |
64285810 | 1215 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 1216 | && !bfd_link_pic (info) |
0451c93c MS |
1217 | && (sec->flags & SEC_ALLOC) != 0 |
1218 | && h != NULL | |
1219 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 1220 | || !h->def_regular))) |
a85d7ed0 | 1221 | { |
00d8c7a9 AK |
1222 | struct elf_dyn_relocs *p; |
1223 | struct elf_dyn_relocs **head; | |
ec338859 | 1224 | |
0451c93c MS |
1225 | /* We must copy these reloc types into the output file. |
1226 | Create a reloc section in dynobj and make room for | |
1227 | this reloc. */ | |
a85d7ed0 NC |
1228 | if (sreloc == NULL) |
1229 | { | |
440e9cd2 AK |
1230 | if (htab->elf.dynobj == NULL) |
1231 | htab->elf.dynobj = abfd; | |
1232 | ||
83bac4b0 NC |
1233 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1234 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
ec338859 | 1235 | |
a85d7ed0 | 1236 | if (sreloc == NULL) |
83bac4b0 | 1237 | return FALSE; |
a85d7ed0 | 1238 | } |
ec338859 | 1239 | |
0451c93c MS |
1240 | /* If this is a global symbol, we count the number of |
1241 | relocations we need for this symbol. */ | |
1242 | if (h != NULL) | |
a85d7ed0 | 1243 | { |
ec338859 | 1244 | head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs; |
0451c93c MS |
1245 | } |
1246 | else | |
1247 | { | |
ec338859 AM |
1248 | /* Track dynamic relocs needed for local syms too. |
1249 | We really need local syms available to do this | |
1250 | easily. Oh well. */ | |
ec338859 | 1251 | asection *s; |
6edfbbad DJ |
1252 | void *vpp; |
1253 | ||
87d72d41 AM |
1254 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1255 | abfd, r_symndx); | |
1256 | if (isym == NULL) | |
b34976b6 | 1257 | return FALSE; |
ec338859 | 1258 | |
87d72d41 AM |
1259 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
1260 | if (s == NULL) | |
1261 | s = sec; | |
1262 | ||
6edfbbad | 1263 | vpp = &elf_section_data (s)->local_dynrel; |
00d8c7a9 | 1264 | head = (struct elf_dyn_relocs **) vpp; |
ec338859 AM |
1265 | } |
1266 | ||
1267 | p = *head; | |
1268 | if (p == NULL || p->sec != sec) | |
1269 | { | |
1270 | bfd_size_type amt = sizeof *p; | |
00d8c7a9 | 1271 | p = ((struct elf_dyn_relocs *) |
ec338859 AM |
1272 | bfd_alloc (htab->elf.dynobj, amt)); |
1273 | if (p == NULL) | |
b34976b6 | 1274 | return FALSE; |
ec338859 AM |
1275 | p->next = *head; |
1276 | *head = p; | |
1277 | p->sec = sec; | |
1278 | p->count = 0; | |
1279 | p->pc_count = 0; | |
a85d7ed0 | 1280 | } |
ec338859 AM |
1281 | |
1282 | p->count += 1; | |
1283 | if (ELF64_R_TYPE (rel->r_info) == R_390_PC16 | |
fb798c50 AK |
1284 | || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL |
1285 | || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL | |
ec338859 AM |
1286 | || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL |
1287 | || ELF64_R_TYPE (rel->r_info) == R_390_PC32 | |
1288 | || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL | |
1289 | || ELF64_R_TYPE (rel->r_info) == R_390_PC64) | |
1290 | p->pc_count += 1; | |
a85d7ed0 | 1291 | } |
a85d7ed0 | 1292 | break; |
ec338859 | 1293 | |
a85d7ed0 NC |
1294 | /* This relocation describes the C++ object vtable hierarchy. |
1295 | Reconstruct it for later use during GC. */ | |
947216bf | 1296 | case R_390_GNU_VTINHERIT: |
c152c796 | 1297 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 1298 | return FALSE; |
947216bf | 1299 | break; |
ec338859 | 1300 | |
a85d7ed0 NC |
1301 | /* This relocation describes which C++ vtable entries are actually |
1302 | used. Record for later use during GC. */ | |
947216bf | 1303 | case R_390_GNU_VTENTRY: |
d17e0c6e JB |
1304 | BFD_ASSERT (h != NULL); |
1305 | if (h != NULL | |
1306 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 1307 | return FALSE; |
947216bf | 1308 | break; |
ec338859 | 1309 | |
a85d7ed0 NC |
1310 | default: |
1311 | break; | |
1312 | } | |
1313 | } | |
1314 | ||
b34976b6 | 1315 | return TRUE; |
a85d7ed0 NC |
1316 | } |
1317 | ||
1318 | /* Return the section that should be marked against GC for a given | |
1319 | relocation. */ | |
1320 | ||
1321 | static asection * | |
07adf181 AM |
1322 | elf_s390_gc_mark_hook (asection *sec, |
1323 | struct bfd_link_info *info, | |
1324 | Elf_Internal_Rela *rel, | |
1325 | struct elf_link_hash_entry *h, | |
1326 | Elf_Internal_Sym *sym) | |
a85d7ed0 NC |
1327 | { |
1328 | if (h != NULL) | |
07adf181 AM |
1329 | switch (ELF64_R_TYPE (rel->r_info)) |
1330 | { | |
1331 | case R_390_GNU_VTINHERIT: | |
1332 | case R_390_GNU_VTENTRY: | |
1333 | return NULL; | |
1334 | } | |
1335 | ||
1336 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
a85d7ed0 NC |
1337 | } |
1338 | ||
5236c819 MS |
1339 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
1340 | entry but we found we will not create any. Called when we find we will | |
1341 | not have any PLT for this symbol, by for example | |
1342 | elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
1343 | or elf_s390_size_dynamic_sections if no dynamic sections will be | |
1344 | created (we're only linking static objects). */ | |
1345 | ||
1346 | static void | |
2c3fc389 | 1347 | elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h) |
5236c819 MS |
1348 | { |
1349 | if (h->elf.root.type == bfd_link_hash_warning) | |
1350 | h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link; | |
1351 | ||
1352 | if (h->gotplt_refcount <= 0) | |
1353 | return; | |
1354 | ||
1355 | /* We simply add the number of gotplt references to the number | |
1356 | * of got references for this symbol. */ | |
1357 | h->elf.got.refcount += h->gotplt_refcount; | |
1358 | h->gotplt_refcount = -1; | |
1359 | } | |
1360 | ||
63c1f59d AM |
1361 | /* Find dynamic relocs for H that apply to read-only sections. */ |
1362 | ||
1363 | static asection * | |
1364 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
1365 | { | |
1366 | struct elf_dyn_relocs *p; | |
1367 | ||
1368 | for (p = elf_s390_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
1369 | { | |
1370 | asection *s = p->sec->output_section; | |
1371 | ||
1372 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1373 | return p->sec; | |
1374 | } | |
1375 | return NULL; | |
1376 | } | |
1377 | ||
a85d7ed0 NC |
1378 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1379 | regular object. The current definition is in some section of the | |
1380 | dynamic object, but we're not including those sections. We have to | |
1381 | change the definition to something the rest of the link can | |
1382 | understand. */ | |
1383 | ||
b34976b6 | 1384 | static bfd_boolean |
4dfe6ac6 NC |
1385 | elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info, |
1386 | struct elf_link_hash_entry *h) | |
a85d7ed0 | 1387 | { |
0451c93c | 1388 | struct elf_s390_link_hash_table *htab; |
5474d94f | 1389 | asection *s, *srel; |
a85d7ed0 | 1390 | |
470b557a AK |
1391 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1392 | if (s390_is_ifunc_symbol_p (h)) | |
d8ee9e44 AK |
1393 | { |
1394 | /* All local STT_GNU_IFUNC references must be treated as local | |
1395 | calls via local PLT. */ | |
1396 | if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h)) | |
1397 | { | |
1398 | bfd_size_type pc_count = 0, count = 0; | |
1399 | struct elf_dyn_relocs **pp; | |
1400 | struct elf_s390_link_hash_entry *eh; | |
1401 | struct elf_dyn_relocs *p; | |
1402 | ||
1403 | eh = (struct elf_s390_link_hash_entry *) h; | |
1404 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1405 | { | |
1406 | pc_count += p->pc_count; | |
1407 | p->count -= p->pc_count; | |
1408 | p->pc_count = 0; | |
1409 | count += p->count; | |
1410 | if (p->count == 0) | |
1411 | *pp = p->next; | |
1412 | else | |
1413 | pp = &p->next; | |
1414 | } | |
1415 | ||
1416 | if (pc_count || count) | |
1417 | { | |
1418 | h->needs_plt = 1; | |
1419 | h->non_got_ref = 1; | |
1420 | if (h->plt.refcount <= 0) | |
1421 | h->plt.refcount = 1; | |
1422 | else | |
1423 | h->plt.refcount += 1; | |
1424 | } | |
1425 | } | |
1426 | ||
1427 | if (h->plt.refcount <= 0) | |
1428 | { | |
1429 | h->plt.offset = (bfd_vma) -1; | |
1430 | h->needs_plt = 0; | |
1431 | } | |
1432 | return TRUE; | |
1433 | } | |
470b557a | 1434 | |
a85d7ed0 NC |
1435 | /* If this is a function, put it in the procedure linkage table. We |
1436 | will fill in the contents of the procedure linkage table later | |
cedb70c5 | 1437 | (although we could actually do it here). */ |
a85d7ed0 | 1438 | if (h->type == STT_FUNC |
f5385ebf | 1439 | || h->needs_plt) |
a85d7ed0 | 1440 | { |
0451c93c | 1441 | if (h->plt.refcount <= 0 |
8c21ca21 | 1442 | || SYMBOL_CALLS_LOCAL (info, h) |
10e7c045 | 1443 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
a85d7ed0 NC |
1444 | { |
1445 | /* This case can occur if we saw a PLT32 reloc in an input | |
947216bf AM |
1446 | file, but the symbol was never referred to by a dynamic |
1447 | object, or if all references were garbage collected. In | |
0451c93c MS |
1448 | such a case, we don't actually need to build a procedure |
1449 | linkage table, and we can just do a PC32 reloc instead. */ | |
a85d7ed0 | 1450 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1451 | h->needs_plt = 0; |
5236c819 | 1452 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
a85d7ed0 NC |
1453 | } |
1454 | ||
b34976b6 | 1455 | return TRUE; |
a85d7ed0 | 1456 | } |
bbd7ec4a | 1457 | else |
0451c93c MS |
1458 | /* It's possible that we incorrectly decided a .plt reloc was |
1459 | needed for an R_390_PC32 reloc to a non-function sym in | |
1460 | check_relocs. We can't decide accurately between function and | |
1461 | non-function syms in check-relocs; Objects loaded later in | |
1462 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1463 | h->plt.offset = (bfd_vma) -1; |
a85d7ed0 NC |
1464 | |
1465 | /* If this is a weak symbol, and there is a real definition, the | |
1466 | processor independent code will have arranged for us to see the | |
1467 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 1468 | if (h->is_weakalias) |
a85d7ed0 | 1469 | { |
60d67dc8 AM |
1470 | struct elf_link_hash_entry *def = weakdef (h); |
1471 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
1472 | h->root.u.def.section = def->root.u.def.section; | |
1473 | h->root.u.def.value = def->root.u.def.value; | |
64285810 | 1474 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
60d67dc8 | 1475 | h->non_got_ref = def->non_got_ref; |
b34976b6 | 1476 | return TRUE; |
a85d7ed0 NC |
1477 | } |
1478 | ||
1479 | /* This is a reference to a symbol defined by a dynamic object which | |
1480 | is not a function. */ | |
1481 | ||
1482 | /* If we are creating a shared library, we must presume that the | |
1483 | only references to the symbol are via the global offset table. | |
1484 | For such cases we need not do anything here; the relocations will | |
1485 | be handled correctly by relocate_section. */ | |
0e1862bb | 1486 | if (bfd_link_pic (info)) |
b34976b6 | 1487 | return TRUE; |
a85d7ed0 NC |
1488 | |
1489 | /* If there are no references to this symbol that do not use the | |
1490 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 1491 | if (!h->non_got_ref) |
b34976b6 | 1492 | return TRUE; |
a85d7ed0 | 1493 | |
0451c93c MS |
1494 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1495 | if (info->nocopyreloc) | |
1496 | { | |
f5385ebf | 1497 | h->non_got_ref = 0; |
b34976b6 | 1498 | return TRUE; |
0451c93c MS |
1499 | } |
1500 | ||
3bf083ed AM |
1501 | /* If we don't find any dynamic relocs in read-only sections, then |
1502 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1503 | if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h)) | |
0451c93c | 1504 | { |
3bf083ed AM |
1505 | h->non_got_ref = 0; |
1506 | return TRUE; | |
0451c93c MS |
1507 | } |
1508 | ||
a85d7ed0 NC |
1509 | /* We must allocate the symbol in our .dynbss section, which will |
1510 | become part of the .bss section of the executable. There will be | |
1511 | an entry for this symbol in the .dynsym section. The dynamic | |
1512 | object will contain position independent code, so all references | |
1513 | from the dynamic object to this symbol will go through the global | |
1514 | offset table. The dynamic linker will use the .dynsym entry to | |
1515 | determine the address it must put in the global offset table, so | |
1516 | both the dynamic object and the regular object will refer to the | |
1517 | same memory location for the variable. */ | |
1518 | ||
0451c93c | 1519 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
1520 | if (htab == NULL) |
1521 | return FALSE; | |
a85d7ed0 | 1522 | |
0451c93c MS |
1523 | /* We must generate a R_390_COPY reloc to tell the dynamic linker to |
1524 | copy the initial value out of the dynamic object and into the | |
1525 | runtime process image. */ | |
5474d94f AM |
1526 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
1527 | { | |
1528 | s = htab->elf.sdynrelro; | |
1529 | srel = htab->elf.sreldynrelro; | |
1530 | } | |
1531 | else | |
1532 | { | |
1533 | s = htab->elf.sdynbss; | |
1534 | srel = htab->elf.srelbss; | |
1535 | } | |
1d7e9d18 | 1536 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
a85d7ed0 | 1537 | { |
5474d94f | 1538 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 1539 | h->needs_copy = 1; |
a85d7ed0 NC |
1540 | } |
1541 | ||
6cabe1ea | 1542 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a85d7ed0 NC |
1543 | } |
1544 | ||
0451c93c MS |
1545 | /* Allocate space in .plt, .got and associated reloc sections for |
1546 | dynamic relocs. */ | |
1547 | ||
b34976b6 | 1548 | static bfd_boolean |
4dfe6ac6 NC |
1549 | allocate_dynrelocs (struct elf_link_hash_entry *h, |
1550 | void * inf) | |
0451c93c MS |
1551 | { |
1552 | struct bfd_link_info *info; | |
1553 | struct elf_s390_link_hash_table *htab; | |
470b557a | 1554 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h; |
00d8c7a9 | 1555 | struct elf_dyn_relocs *p; |
0451c93c | 1556 | |
e92d460e | 1557 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1558 | return TRUE; |
0451c93c MS |
1559 | |
1560 | info = (struct bfd_link_info *) inf; | |
1561 | htab = elf_s390_hash_table (info); | |
4dfe6ac6 NC |
1562 | if (htab == NULL) |
1563 | return FALSE; | |
0451c93c | 1564 | |
470b557a AK |
1565 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
1566 | here if it is defined and referenced in a non-shared object. */ | |
1567 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
61643fba | 1568 | return s390_elf_allocate_ifunc_dyn_relocs (info, h); |
470b557a AK |
1569 | else if (htab->elf.dynamic_sections_created |
1570 | && h->plt.refcount > 0) | |
0451c93c MS |
1571 | { |
1572 | /* Make sure this symbol is output as a dynamic symbol. | |
1573 | Undefined weak syms won't yet be marked as dynamic. */ | |
1574 | if (h->dynindx == -1 | |
f5385ebf | 1575 | && !h->forced_local) |
0451c93c | 1576 | { |
c152c796 | 1577 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1578 | return FALSE; |
0451c93c MS |
1579 | } |
1580 | ||
0e1862bb | 1581 | if (bfd_link_pic (info) |
4ec72bde | 1582 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
0451c93c | 1583 | { |
f41345a7 | 1584 | asection *s = htab->elf.splt; |
0451c93c MS |
1585 | |
1586 | /* If this is the first .plt entry, make room for the special | |
1587 | first entry. */ | |
eea6121a AM |
1588 | if (s->size == 0) |
1589 | s->size += PLT_FIRST_ENTRY_SIZE; | |
0451c93c | 1590 | |
eea6121a | 1591 | h->plt.offset = s->size; |
0451c93c MS |
1592 | |
1593 | /* If this symbol is not defined in a regular file, and we are | |
1594 | not generating a shared library, then set the symbol to this | |
1595 | location in the .plt. This is required to make function | |
1596 | pointers compare as equal between the normal executable and | |
1597 | the shared library. */ | |
0e1862bb | 1598 | if (! bfd_link_pic (info) |
f5385ebf | 1599 | && !h->def_regular) |
0451c93c MS |
1600 | { |
1601 | h->root.u.def.section = s; | |
1602 | h->root.u.def.value = h->plt.offset; | |
1603 | } | |
ec338859 | 1604 | |
0451c93c | 1605 | /* Make room for this entry. */ |
eea6121a | 1606 | s->size += PLT_ENTRY_SIZE; |
ec338859 | 1607 | |
0451c93c MS |
1608 | /* We also need to make an entry in the .got.plt section, which |
1609 | will be placed in the .got section by the linker script. */ | |
f41345a7 | 1610 | htab->elf.sgotplt->size += GOT_ENTRY_SIZE; |
0451c93c MS |
1611 | |
1612 | /* We also need to make an entry in the .rela.plt section. */ | |
f41345a7 | 1613 | htab->elf.srelplt->size += sizeof (Elf64_External_Rela); |
0451c93c MS |
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 | } | |
1622 | else | |
1623 | { | |
1624 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1625 | h->needs_plt = 0; |
5236c819 | 1626 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c MS |
1627 | } |
1628 | ||
69fc87f1 MS |
1629 | /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to |
1630 | the binary, we can optimize a bit. IE64 and GOTIE64 get converted | |
1631 | to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT | |
1632 | we can save the dynamic TLS relocation. */ | |
1633 | if (h->got.refcount > 0 | |
0e1862bb | 1634 | && !bfd_link_pic (info) |
69fc87f1 MS |
1635 | && h->dynindx == -1 |
1636 | && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE) | |
1637 | { | |
1638 | if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT) | |
1639 | /* For the GOTIE access without a literal pool entry the offset has | |
1640 | to be stored somewhere. The immediate value in the instruction | |
1641 | is not bit enough so the value is stored in the got. */ | |
1642 | { | |
f41345a7 AK |
1643 | h->got.offset = htab->elf.sgot->size; |
1644 | htab->elf.sgot->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1645 | } |
1646 | else | |
1647 | h->got.offset = (bfd_vma) -1; | |
1648 | } | |
1649 | else if (h->got.refcount > 0) | |
0451c93c MS |
1650 | { |
1651 | asection *s; | |
b34976b6 | 1652 | bfd_boolean dyn; |
69fc87f1 | 1653 | int tls_type = elf_s390_hash_entry(h)->tls_type; |
0451c93c MS |
1654 | |
1655 | /* Make sure this symbol is output as a dynamic symbol. | |
1656 | Undefined weak syms won't yet be marked as dynamic. */ | |
1657 | if (h->dynindx == -1 | |
f5385ebf | 1658 | && !h->forced_local) |
0451c93c | 1659 | { |
c152c796 | 1660 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1661 | return FALSE; |
0451c93c MS |
1662 | } |
1663 | ||
f41345a7 | 1664 | s = htab->elf.sgot; |
eea6121a AM |
1665 | h->got.offset = s->size; |
1666 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1667 | /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */ |
1668 | if (tls_type == GOT_TLS_GD) | |
eea6121a | 1669 | s->size += GOT_ENTRY_SIZE; |
0451c93c | 1670 | dyn = htab->elf.dynamic_sections_created; |
69fc87f1 MS |
1671 | /* R_390_TLS_IE64 needs one dynamic relocation, |
1672 | R_390_TLS_GD64 needs one if local symbol and two if global. */ | |
1673 | if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1674 | || tls_type >= GOT_TLS_IE) | |
f41345a7 | 1675 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); |
69fc87f1 | 1676 | else if (tls_type == GOT_TLS_GD) |
f41345a7 | 1677 | htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela); |
10e7c045 | 1678 | else if (!UNDEFWEAK_NO_DYNAMIC_RELOC (info, h) |
0e1862bb | 1679 | && (bfd_link_pic (info) |
82058a73 | 1680 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
f41345a7 | 1681 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); |
0451c93c MS |
1682 | } |
1683 | else | |
1684 | h->got.offset = (bfd_vma) -1; | |
1685 | ||
0451c93c | 1686 | if (eh->dyn_relocs == NULL) |
b34976b6 | 1687 | return TRUE; |
0451c93c MS |
1688 | |
1689 | /* In the shared -Bsymbolic case, discard space allocated for | |
1690 | dynamic pc-relative relocs against symbols which turn out to be | |
1691 | defined in regular objects. For the normal shared case, discard | |
1692 | space for pc-relative relocs that have become local due to symbol | |
1693 | visibility changes. */ | |
1694 | ||
0e1862bb | 1695 | if (bfd_link_pic (info)) |
0451c93c | 1696 | { |
8c21ca21 | 1697 | if (SYMBOL_CALLS_LOCAL (info, h)) |
0451c93c | 1698 | { |
00d8c7a9 | 1699 | struct elf_dyn_relocs **pp; |
0451c93c MS |
1700 | |
1701 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1702 | { | |
1703 | p->count -= p->pc_count; | |
1704 | p->pc_count = 0; | |
1705 | if (p->count == 0) | |
1706 | *pp = p->next; | |
1707 | else | |
1708 | pp = &p->next; | |
1709 | } | |
1710 | } | |
82058a73 MS |
1711 | |
1712 | /* Also discard relocs on undefined weak syms with non-default | |
1713 | visibility. */ | |
22d606e9 | 1714 | if (eh->dyn_relocs != NULL |
82058a73 | 1715 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 | 1716 | { |
b27bb18f L |
1717 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
1718 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
22d606e9 AM |
1719 | eh->dyn_relocs = NULL; |
1720 | ||
1721 | /* Make sure undefined weak symbols are output as a dynamic | |
1722 | symbol in PIEs. */ | |
1723 | else if (h->dynindx == -1 | |
1724 | && !h->forced_local) | |
1725 | { | |
1726 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1727 | return FALSE; | |
1728 | } | |
1729 | } | |
0451c93c | 1730 | } |
64285810 | 1731 | else if (ELIMINATE_COPY_RELOCS) |
0451c93c MS |
1732 | { |
1733 | /* For the non-shared case, discard space for relocs against | |
1734 | symbols which turn out to need copy relocs or are not | |
1735 | dynamic. */ | |
1736 | ||
f5385ebf AM |
1737 | if (!h->non_got_ref |
1738 | && ((h->def_dynamic | |
1739 | && !h->def_regular) | |
0451c93c MS |
1740 | || (htab->elf.dynamic_sections_created |
1741 | && (h->root.type == bfd_link_hash_undefweak | |
1742 | || h->root.type == bfd_link_hash_undefined)))) | |
1743 | { | |
1744 | /* Make sure this symbol is output as a dynamic symbol. | |
1745 | Undefined weak syms won't yet be marked as dynamic. */ | |
1746 | if (h->dynindx == -1 | |
f5385ebf | 1747 | && !h->forced_local) |
0451c93c | 1748 | { |
c152c796 | 1749 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1750 | return FALSE; |
0451c93c MS |
1751 | } |
1752 | ||
1753 | /* If that succeeded, we know we'll be keeping all the | |
1754 | relocs. */ | |
1755 | if (h->dynindx != -1) | |
1756 | goto keep; | |
1757 | } | |
1758 | ||
1759 | eh->dyn_relocs = NULL; | |
1760 | ||
ec338859 | 1761 | keep: ; |
0451c93c MS |
1762 | } |
1763 | ||
1764 | /* Finally, allocate space. */ | |
1765 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1766 | { | |
1767 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 1768 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
0451c93c MS |
1769 | } |
1770 | ||
b34976b6 | 1771 | return TRUE; |
0451c93c MS |
1772 | } |
1773 | ||
63c1f59d AM |
1774 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
1775 | read-only sections. */ | |
0451c93c | 1776 | |
b34976b6 | 1777 | static bfd_boolean |
63c1f59d | 1778 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
0451c93c | 1779 | { |
63c1f59d | 1780 | asection *sec; |
0451c93c | 1781 | |
63c1f59d AM |
1782 | if (h->root.type == bfd_link_hash_indirect) |
1783 | return TRUE; | |
0451c93c | 1784 | |
63c1f59d AM |
1785 | sec = readonly_dynrelocs (h); |
1786 | if (sec != NULL) | |
1787 | { | |
1788 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; | |
0451c93c | 1789 | |
63c1f59d AM |
1790 | info->flags |= DF_TEXTREL; |
1791 | info->callbacks->minfo | |
c1c8c1ef | 1792 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 1793 | sec->owner, h->root.root.string, sec); |
0451c93c | 1794 | |
63c1f59d AM |
1795 | /* Not an error, just cut short the traversal. */ |
1796 | return FALSE; | |
0451c93c | 1797 | } |
b34976b6 | 1798 | return TRUE; |
0451c93c MS |
1799 | } |
1800 | ||
a85d7ed0 NC |
1801 | /* Set the sizes of the dynamic sections. */ |
1802 | ||
b34976b6 | 1803 | static bfd_boolean |
4dfe6ac6 NC |
1804 | elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
1805 | struct bfd_link_info *info) | |
a85d7ed0 | 1806 | { |
0451c93c | 1807 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
1808 | bfd *dynobj; |
1809 | asection *s; | |
b34976b6 | 1810 | bfd_boolean relocs; |
0451c93c | 1811 | bfd *ibfd; |
a85d7ed0 | 1812 | |
0451c93c | 1813 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
1814 | if (htab == NULL) |
1815 | return FALSE; | |
1816 | ||
0451c93c MS |
1817 | dynobj = htab->elf.dynobj; |
1818 | if (dynobj == NULL) | |
1819 | abort (); | |
a85d7ed0 | 1820 | |
0451c93c | 1821 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
1822 | { |
1823 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 1824 | if (bfd_link_executable (info) && !info->nointerp) |
a85d7ed0 | 1825 | { |
3d4d4302 | 1826 | s = bfd_get_linker_section (dynobj, ".interp"); |
0451c93c MS |
1827 | if (s == NULL) |
1828 | abort (); | |
eea6121a | 1829 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
a85d7ed0 NC |
1830 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1831 | } | |
1832 | } | |
a85d7ed0 | 1833 | |
0451c93c MS |
1834 | /* Set up .got offsets for local syms, and space for local dynamic |
1835 | relocs. */ | |
c72f2fb2 | 1836 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a85d7ed0 | 1837 | { |
0451c93c MS |
1838 | bfd_signed_vma *local_got; |
1839 | bfd_signed_vma *end_local_got; | |
69fc87f1 | 1840 | char *local_tls_type; |
0451c93c MS |
1841 | bfd_size_type locsymcount; |
1842 | Elf_Internal_Shdr *symtab_hdr; | |
1843 | asection *srela; | |
470b557a AK |
1844 | struct plt_entry *local_plt; |
1845 | unsigned int i; | |
a85d7ed0 | 1846 | |
0ffa91dd | 1847 | if (! is_s390_elf (ibfd)) |
a85d7ed0 NC |
1848 | continue; |
1849 | ||
0451c93c | 1850 | for (s = ibfd->sections; s != NULL; s = s->next) |
a85d7ed0 | 1851 | { |
00d8c7a9 | 1852 | struct elf_dyn_relocs *p; |
0451c93c | 1853 | |
6edfbbad | 1854 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
a85d7ed0 | 1855 | { |
ec338859 AM |
1856 | if (!bfd_is_abs_section (p->sec) |
1857 | && bfd_is_abs_section (p->sec->output_section)) | |
1858 | { | |
1859 | /* Input section has been discarded, either because | |
1860 | it is a copy of a linkonce section or due to | |
1861 | linker script /DISCARD/, so we'll be discarding | |
1862 | the relocs too. */ | |
1863 | } | |
248866a8 | 1864 | else if (p->count != 0) |
ec338859 AM |
1865 | { |
1866 | srela = elf_section_data (p->sec)->sreloc; | |
eea6121a | 1867 | srela->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
1868 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
1869 | info->flags |= DF_TEXTREL; | |
ec338859 | 1870 | } |
a85d7ed0 NC |
1871 | } |
1872 | } | |
0451c93c MS |
1873 | |
1874 | local_got = elf_local_got_refcounts (ibfd); | |
1875 | if (!local_got) | |
1876 | continue; | |
1877 | ||
0ffa91dd | 1878 | symtab_hdr = &elf_symtab_hdr (ibfd); |
0451c93c MS |
1879 | locsymcount = symtab_hdr->sh_info; |
1880 | end_local_got = local_got + locsymcount; | |
69fc87f1 | 1881 | local_tls_type = elf_s390_local_got_tls_type (ibfd); |
f41345a7 AK |
1882 | s = htab->elf.sgot; |
1883 | srela = htab->elf.srelgot; | |
69fc87f1 | 1884 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
a85d7ed0 | 1885 | { |
0451c93c | 1886 | if (*local_got > 0) |
a85d7ed0 | 1887 | { |
eea6121a AM |
1888 | *local_got = s->size; |
1889 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 | 1890 | if (*local_tls_type == GOT_TLS_GD) |
eea6121a | 1891 | s->size += GOT_ENTRY_SIZE; |
0e1862bb | 1892 | if (bfd_link_pic (info)) |
eea6121a | 1893 | srela->size += sizeof (Elf64_External_Rela); |
a85d7ed0 NC |
1894 | } |
1895 | else | |
0451c93c | 1896 | *local_got = (bfd_vma) -1; |
a85d7ed0 | 1897 | } |
470b557a AK |
1898 | |
1899 | local_plt = elf_s390_local_plt (ibfd); | |
1900 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
1901 | { | |
1902 | if (local_plt[i].plt.refcount > 0) | |
1903 | { | |
1904 | local_plt[i].plt.offset = htab->elf.iplt->size; | |
1905 | htab->elf.iplt->size += PLT_ENTRY_SIZE; | |
1906 | htab->elf.igotplt->size += GOT_ENTRY_SIZE; | |
1907 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
1908 | } | |
1909 | else | |
1910 | local_plt[i].plt.offset = (bfd_vma) -1; | |
1911 | } | |
0451c93c MS |
1912 | } |
1913 | ||
69fc87f1 MS |
1914 | if (htab->tls_ldm_got.refcount > 0) |
1915 | { | |
1916 | /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64 | |
1917 | relocs. */ | |
f41345a7 AK |
1918 | htab->tls_ldm_got.offset = htab->elf.sgot->size; |
1919 | htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE; | |
1920 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); | |
69fc87f1 MS |
1921 | } |
1922 | else | |
1923 | htab->tls_ldm_got.offset = -1; | |
1924 | ||
0451c93c MS |
1925 | /* Allocate global sym .plt and .got entries, and space for global |
1926 | sym dynamic relocs. */ | |
2c3fc389 | 1927 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
0451c93c MS |
1928 | |
1929 | /* We now have determined the sizes of the various dynamic sections. | |
1930 | Allocate memory for them. */ | |
b34976b6 | 1931 | relocs = FALSE; |
0451c93c MS |
1932 | for (s = dynobj->sections; s != NULL; s = s->next) |
1933 | { | |
1934 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1935 | continue; | |
1936 | ||
f41345a7 AK |
1937 | if (s == htab->elf.splt |
1938 | || s == htab->elf.sgot | |
1939 | || s == htab->elf.sgotplt | |
9d19e4fd | 1940 | || s == htab->elf.sdynbss |
5474d94f | 1941 | || s == htab->elf.sdynrelro |
470b557a AK |
1942 | || s == htab->elf.iplt |
1943 | || s == htab->elf.igotplt | |
1944 | || s == htab->irelifunc) | |
0451c93c MS |
1945 | { |
1946 | /* Strip this section if we don't need it; see the | |
1947 | comment below. */ | |
1948 | } | |
0112cd26 | 1949 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
0451c93c | 1950 | { |
f41345a7 | 1951 | if (s->size != 0 && s != htab->elf.srelplt) |
b34976b6 | 1952 | relocs = TRUE; |
ec338859 | 1953 | |
0451c93c MS |
1954 | /* We use the reloc_count field as a counter if we need |
1955 | to copy relocs into the output file. */ | |
1956 | s->reloc_count = 0; | |
1957 | } | |
1958 | else | |
a85d7ed0 NC |
1959 | { |
1960 | /* It's not one of our sections, so don't allocate space. */ | |
1961 | continue; | |
1962 | } | |
1963 | ||
eea6121a | 1964 | if (s->size == 0) |
a85d7ed0 | 1965 | { |
0451c93c MS |
1966 | /* If we don't need this section, strip it from the |
1967 | output file. This is to handle .rela.bss and | |
1968 | .rela.plt. We must create it in | |
1969 | create_dynamic_sections, because it must be created | |
1970 | before the linker maps input sections to output | |
1971 | sections. The linker does that before | |
1972 | adjust_dynamic_symbol is called, and it is that | |
1973 | function which decides whether anything needs to go | |
1974 | into these sections. */ | |
1975 | ||
8423293d | 1976 | s->flags |= SEC_EXCLUDE; |
a85d7ed0 NC |
1977 | continue; |
1978 | } | |
1979 | ||
c456f082 AM |
1980 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
1981 | continue; | |
1982 | ||
0451c93c MS |
1983 | /* Allocate memory for the section contents. We use bfd_zalloc |
1984 | here in case unused entries are not reclaimed before the | |
1985 | section's contents are written out. This should not happen, | |
1986 | but this way if it does, we get a R_390_NONE reloc instead | |
1987 | of garbage. */ | |
eea6121a | 1988 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
0451c93c | 1989 | if (s->contents == NULL) |
b34976b6 | 1990 | return FALSE; |
a85d7ed0 NC |
1991 | } |
1992 | ||
0451c93c | 1993 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
1994 | { |
1995 | /* Add some entries to the .dynamic section. We fill in the | |
1996 | values later, in elf_s390_finish_dynamic_sections, but we | |
1997 | must add the entries now so that we get the correct size for | |
1998 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1999 | dynamic linker and used by the debugger. */ | |
dc810e39 | 2000 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2001 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 2002 | |
0e1862bb | 2003 | if (bfd_link_executable (info)) |
a85d7ed0 | 2004 | { |
dc810e39 | 2005 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2006 | return FALSE; |
a85d7ed0 NC |
2007 | } |
2008 | ||
f41345a7 | 2009 | if (htab->elf.splt->size != 0) |
a85d7ed0 | 2010 | { |
dc810e39 AM |
2011 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2012 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2013 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2014 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2015 | return FALSE; |
a85d7ed0 NC |
2016 | } |
2017 | ||
2018 | if (relocs) | |
947216bf AM |
2019 | { |
2020 | if (!add_dynamic_entry (DT_RELA, 0) | |
2021 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2022 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 2023 | return FALSE; |
ec338859 | 2024 | |
0451c93c MS |
2025 | /* If any dynamic relocs apply to a read-only section, |
2026 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 2027 | if ((info->flags & DF_TEXTREL) == 0) |
63c1f59d | 2028 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
ec338859 | 2029 | |
0451c93c MS |
2030 | if ((info->flags & DF_TEXTREL) != 0) |
2031 | { | |
2032 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2033 | return FALSE; |
0451c93c | 2034 | } |
a85d7ed0 NC |
2035 | } |
2036 | } | |
dc810e39 | 2037 | #undef add_dynamic_entry |
a85d7ed0 | 2038 | |
b34976b6 | 2039 | return TRUE; |
a85d7ed0 NC |
2040 | } |
2041 | ||
69fc87f1 MS |
2042 | /* Return the base VMA address which should be subtracted from real addresses |
2043 | when resolving @dtpoff relocation. | |
2044 | This is PT_TLS segment p_vaddr. */ | |
2045 | ||
2046 | static bfd_vma | |
2c3fc389 | 2047 | dtpoff_base (struct bfd_link_info *info) |
69fc87f1 | 2048 | { |
e1918d23 AM |
2049 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2050 | if (elf_hash_table (info)->tls_sec == NULL) | |
69fc87f1 | 2051 | return 0; |
e1918d23 | 2052 | return elf_hash_table (info)->tls_sec->vma; |
69fc87f1 MS |
2053 | } |
2054 | ||
2055 | /* Return the relocation value for @tpoff relocation | |
2056 | if STT_TLS virtual address is ADDRESS. */ | |
2057 | ||
2058 | static bfd_vma | |
2c3fc389 | 2059 | tpoff (struct bfd_link_info *info, bfd_vma address) |
69fc87f1 | 2060 | { |
e1918d23 | 2061 | struct elf_link_hash_table *htab = elf_hash_table (info); |
69fc87f1 | 2062 | |
e1918d23 AM |
2063 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2064 | if (htab->tls_sec == NULL) | |
69fc87f1 | 2065 | return 0; |
e1918d23 | 2066 | return htab->tls_size + htab->tls_sec->vma - address; |
69fc87f1 MS |
2067 | } |
2068 | ||
2069 | /* Complain if TLS instruction relocation is against an invalid | |
2070 | instruction. */ | |
2071 | ||
2072 | static void | |
2c3fc389 NC |
2073 | invalid_tls_insn (bfd *input_bfd, |
2074 | asection *input_section, | |
2075 | Elf_Internal_Rela *rel) | |
69fc87f1 MS |
2076 | { |
2077 | reloc_howto_type *howto; | |
2078 | ||
2079 | howto = elf_howto_table + ELF64_R_TYPE (rel->r_info); | |
4eca0228 | 2080 | _bfd_error_handler |
695344c0 | 2081 | /* xgettext:c-format */ |
2dcf00ce | 2082 | (_("%pB(%pA+%#" PRIx64 "): invalid instruction for TLS relocation %s"), |
d003868e AM |
2083 | input_bfd, |
2084 | input_section, | |
2dcf00ce | 2085 | (uint64_t) rel->r_offset, |
69fc87f1 | 2086 | howto->name); |
77df2968 | 2087 | bfd_set_error (bfd_error_bad_value); |
69fc87f1 MS |
2088 | } |
2089 | ||
a85d7ed0 NC |
2090 | /* Relocate a 390 ELF section. */ |
2091 | ||
b34976b6 | 2092 | static bfd_boolean |
4dfe6ac6 NC |
2093 | elf_s390_relocate_section (bfd *output_bfd, |
2094 | struct bfd_link_info *info, | |
2095 | bfd *input_bfd, | |
2096 | asection *input_section, | |
2097 | bfd_byte *contents, | |
2098 | Elf_Internal_Rela *relocs, | |
2099 | Elf_Internal_Sym *local_syms, | |
2100 | asection **local_sections) | |
a85d7ed0 | 2101 | { |
0451c93c | 2102 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
2103 | Elf_Internal_Shdr *symtab_hdr; |
2104 | struct elf_link_hash_entry **sym_hashes; | |
2105 | bfd_vma *local_got_offsets; | |
a85d7ed0 NC |
2106 | Elf_Internal_Rela *rel; |
2107 | Elf_Internal_Rela *relend; | |
2108 | ||
0ffa91dd NC |
2109 | BFD_ASSERT (is_s390_elf (input_bfd)); |
2110 | ||
0451c93c | 2111 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
2112 | if (htab == NULL) |
2113 | return FALSE; | |
2114 | ||
0ffa91dd | 2115 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
a85d7ed0 NC |
2116 | sym_hashes = elf_sym_hashes (input_bfd); |
2117 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2118 | ||
a85d7ed0 NC |
2119 | rel = relocs; |
2120 | relend = relocs + input_section->reloc_count; | |
2121 | for (; rel < relend; rel++) | |
2122 | { | |
5236c819 | 2123 | unsigned int r_type; |
a85d7ed0 NC |
2124 | reloc_howto_type *howto; |
2125 | unsigned long r_symndx; | |
2126 | struct elf_link_hash_entry *h; | |
2127 | Elf_Internal_Sym *sym; | |
2128 | asection *sec; | |
0451c93c | 2129 | bfd_vma off; |
a85d7ed0 | 2130 | bfd_vma relocation; |
b34976b6 | 2131 | bfd_boolean unresolved_reloc; |
a85d7ed0 | 2132 | bfd_reloc_status_type r; |
69fc87f1 | 2133 | int tls_type; |
470b557a | 2134 | asection *base_got = htab->elf.sgot; |
b27bb18f | 2135 | bfd_boolean resolved_to_zero; |
a85d7ed0 NC |
2136 | |
2137 | r_type = ELF64_R_TYPE (rel->r_info); | |
0451c93c | 2138 | if (r_type == (int) R_390_GNU_VTINHERIT |
947216bf AM |
2139 | || r_type == (int) R_390_GNU_VTENTRY) |
2140 | continue; | |
5236c819 | 2141 | if (r_type >= (int) R_390_max) |
a85d7ed0 NC |
2142 | { |
2143 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2144 | return FALSE; |
a85d7ed0 | 2145 | } |
a85d7ed0 | 2146 | |
b491616a | 2147 | howto = elf_howto_table + r_type; |
a85d7ed0 | 2148 | r_symndx = ELF64_R_SYM (rel->r_info); |
5236c819 | 2149 | |
a85d7ed0 NC |
2150 | h = NULL; |
2151 | sym = NULL; | |
2152 | sec = NULL; | |
b34976b6 | 2153 | unresolved_reloc = FALSE; |
a85d7ed0 NC |
2154 | if (r_symndx < symtab_hdr->sh_info) |
2155 | { | |
2156 | sym = local_syms + r_symndx; | |
2157 | sec = local_sections[r_symndx]; | |
470b557a AK |
2158 | |
2159 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
2160 | { | |
2161 | struct plt_entry *local_plt = elf_s390_local_plt (input_bfd); | |
2162 | if (local_plt == NULL) | |
2163 | return FALSE; | |
2164 | ||
2165 | /* Address of the PLT slot. */ | |
2166 | relocation = (htab->elf.iplt->output_section->vma | |
2167 | + htab->elf.iplt->output_offset | |
2168 | + local_plt[r_symndx].plt.offset); | |
2169 | ||
2170 | switch (r_type) | |
2171 | { | |
31db78f6 AK |
2172 | case R_390_PLTOFF16: |
2173 | case R_390_PLTOFF32: | |
2174 | case R_390_PLTOFF64: | |
2175 | relocation -= htab->elf.sgot->output_section->vma; | |
2176 | break; | |
470b557a AK |
2177 | case R_390_GOTPLT12: |
2178 | case R_390_GOTPLT16: | |
2179 | case R_390_GOTPLT20: | |
2180 | case R_390_GOTPLT32: | |
2181 | case R_390_GOTPLT64: | |
2182 | case R_390_GOTPLTENT: | |
2183 | case R_390_GOT12: | |
2184 | case R_390_GOT16: | |
2185 | case R_390_GOT20: | |
2186 | case R_390_GOT32: | |
2187 | case R_390_GOT64: | |
2188 | case R_390_GOTENT: | |
2189 | { | |
2190 | /* Write the PLT slot address into the GOT slot. */ | |
2191 | bfd_put_64 (output_bfd, relocation, | |
2192 | htab->elf.sgot->contents + | |
2193 | local_got_offsets[r_symndx]); | |
2194 | relocation = (local_got_offsets[r_symndx] + | |
2195 | htab->elf.sgot->output_offset); | |
2196 | ||
2197 | if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT) | |
2198 | relocation += htab->elf.sgot->output_section->vma; | |
2199 | break; | |
2200 | } | |
2201 | default: | |
2202 | break; | |
2203 | } | |
2204 | /* The output section is needed later in | |
2205 | finish_dynamic_section when creating the dynamic | |
2206 | relocation. */ | |
2207 | local_plt[r_symndx].sec = sec; | |
2208 | goto do_relocation; | |
2209 | } | |
2210 | else | |
2211 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
a85d7ed0 NC |
2212 | } |
2213 | else | |
2214 | { | |
560e09e9 | 2215 | bfd_boolean warned ATTRIBUTE_UNUSED; |
62d887d4 | 2216 | bfd_boolean ignored ATTRIBUTE_UNUSED; |
0451c93c | 2217 | |
b2a8e766 AM |
2218 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2219 | r_symndx, symtab_hdr, sym_hashes, | |
2220 | h, sec, relocation, | |
62d887d4 | 2221 | unresolved_reloc, warned, ignored); |
a85d7ed0 NC |
2222 | } |
2223 | ||
dbaa2011 | 2224 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 2225 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 2226 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 2227 | |
0e1862bb | 2228 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
2229 | continue; |
2230 | ||
b27bb18f L |
2231 | resolved_to_zero = (h != NULL |
2232 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
2233 | ||
a85d7ed0 NC |
2234 | switch (r_type) |
2235 | { | |
5236c819 MS |
2236 | case R_390_GOTPLT12: |
2237 | case R_390_GOTPLT16: | |
bd1ea41b | 2238 | case R_390_GOTPLT20: |
5236c819 MS |
2239 | case R_390_GOTPLT32: |
2240 | case R_390_GOTPLT64: | |
2241 | case R_390_GOTPLTENT: | |
2242 | /* There are three cases for a GOTPLT relocation. 1) The | |
2243 | relocation is against the jump slot entry of a plt that | |
2244 | will get emitted to the output file. 2) The relocation | |
2245 | is against the jump slot of a plt entry that has been | |
2246 | removed. elf_s390_adjust_gotplt has created a GOT entry | |
2247 | as replacement. 3) The relocation is against a local symbol. | |
2248 | Cases 2) and 3) are the same as the GOT relocation code | |
2249 | so we just have to test for case 1 and fall through for | |
2250 | the other two. */ | |
2251 | if (h != NULL && h->plt.offset != (bfd_vma) -1) | |
2252 | { | |
2253 | bfd_vma plt_index; | |
2254 | ||
470b557a AK |
2255 | if (s390_is_ifunc_symbol_p (h)) |
2256 | { | |
2257 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; | |
2258 | relocation = (plt_index * GOT_ENTRY_SIZE + | |
2259 | htab->elf.igotplt->output_offset); | |
2260 | if (r_type == R_390_GOTPLTENT) | |
2261 | relocation += htab->elf.igotplt->output_section->vma; | |
2262 | } | |
2263 | else | |
2264 | { | |
2265 | /* Calc. index no. | |
2266 | Current offset - size first entry / entry size. */ | |
2267 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / | |
2268 | PLT_ENTRY_SIZE; | |
2269 | ||
2270 | /* Offset in GOT is PLT index plus GOT headers(3) | |
3b67f094 | 2271 | times 8, addr & GOT addr. */ |
470b557a AK |
2272 | relocation = (plt_index + 3) * GOT_ENTRY_SIZE; |
2273 | if (r_type == R_390_GOTPLTENT) | |
2274 | relocation += htab->elf.sgot->output_section->vma; | |
2275 | } | |
5236c819 | 2276 | unresolved_reloc = FALSE; |
5236c819 MS |
2277 | break; |
2278 | } | |
2279 | /* Fall through. */ | |
2280 | ||
947216bf AM |
2281 | case R_390_GOT12: |
2282 | case R_390_GOT16: | |
bd1ea41b | 2283 | case R_390_GOT20: |
947216bf AM |
2284 | case R_390_GOT32: |
2285 | case R_390_GOT64: | |
2286 | case R_390_GOTENT: | |
2287 | /* Relocation is to the entry for this symbol in the global | |
2288 | offset table. */ | |
470b557a | 2289 | if (base_got == NULL) |
0451c93c | 2290 | abort (); |
a85d7ed0 | 2291 | |
947216bf AM |
2292 | if (h != NULL) |
2293 | { | |
b34976b6 | 2294 | bfd_boolean dyn; |
a85d7ed0 | 2295 | |
947216bf | 2296 | off = h->got.offset; |
0451c93c | 2297 | dyn = htab->elf.dynamic_sections_created; |
470b557a AK |
2298 | |
2299 | if (s390_is_ifunc_symbol_p (h)) | |
2300 | { | |
2301 | BFD_ASSERT (h->plt.offset != (bfd_vma) -1); | |
2302 | if (off == (bfd_vma)-1) | |
2303 | { | |
2304 | /* No explicit GOT usage so redirect to the | |
2305 | got.iplt slot. */ | |
2306 | base_got = htab->elf.igotplt; | |
2307 | off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE; | |
2308 | } | |
2309 | else | |
2310 | { | |
2311 | /* Explicit GOT slots must contain the address | |
2312 | of the PLT slot. This will be handled in | |
2313 | finish_dynamic_symbol. */ | |
2314 | } | |
2315 | } | |
0e1862bb L |
2316 | else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
2317 | bfd_link_pic (info), | |
2318 | h) | |
2319 | || (bfd_link_pic (info) | |
470b557a | 2320 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
10e7c045 | 2321 | || resolved_to_zero) |
947216bf AM |
2322 | { |
2323 | /* This is actually a static link, or it is a | |
2324 | -Bsymbolic link and the symbol is defined | |
2325 | locally, or the symbol was forced to be local | |
2326 | because of a version file. We must initialize | |
2327 | this entry in the global offset table. Since the | |
2328 | offset must always be a multiple of 2, we use the | |
2329 | least significant bit to record whether we have | |
2330 | initialized it already. | |
2331 | ||
2332 | When doing a dynamic link, we create a .rel.got | |
2333 | relocation entry to initialize the value. This | |
2334 | is done in the finish_dynamic_symbol routine. */ | |
2335 | if ((off & 1) != 0) | |
2336 | off &= ~1; | |
2337 | else | |
2338 | { | |
a85d7ed0 | 2339 | bfd_put_64 (output_bfd, relocation, |
470b557a | 2340 | base_got->contents + off); |
947216bf AM |
2341 | h->got.offset |= 1; |
2342 | } | |
a63cc5f7 AK |
2343 | |
2344 | if ((h->def_regular | |
0e1862bb | 2345 | && bfd_link_pic (info) |
a63cc5f7 AK |
2346 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
2347 | /* lgrl rx,sym@GOTENT -> larl rx, sym */ | |
2348 | && ((r_type == R_390_GOTENT | |
2349 | && (bfd_get_16 (input_bfd, | |
2350 | contents + rel->r_offset - 2) | |
2351 | & 0xff0f) == 0xc408) | |
2352 | /* lg rx, sym@GOT(r12) -> larl rx, sym */ | |
2353 | || (r_type == R_390_GOT20 | |
2354 | && (bfd_get_32 (input_bfd, | |
2355 | contents + rel->r_offset - 2) | |
2356 | & 0xff00f000) == 0xe300c000 | |
2357 | && bfd_get_8 (input_bfd, | |
2358 | contents + rel->r_offset + 3) == 0x04))) | |
2359 | ||
2360 | { | |
2361 | unsigned short new_insn = | |
2362 | (0xc000 | (bfd_get_8 (input_bfd, | |
2363 | contents + rel->r_offset - 1) & 0xf0)); | |
2364 | bfd_put_16 (output_bfd, new_insn, | |
2365 | contents + rel->r_offset - 2); | |
2366 | r_type = R_390_PC32DBL; | |
2367 | rel->r_addend = 2; | |
2368 | howto = elf_howto_table + r_type; | |
2369 | relocation = h->root.u.def.value | |
2370 | + h->root.u.def.section->output_section->vma | |
2371 | + h->root.u.def.section->output_offset; | |
2372 | goto do_relocation; | |
2373 | } | |
947216bf | 2374 | } |
0451c93c | 2375 | else |
b34976b6 | 2376 | unresolved_reloc = FALSE; |
947216bf AM |
2377 | } |
2378 | else | |
2379 | { | |
0451c93c MS |
2380 | if (local_got_offsets == NULL) |
2381 | abort (); | |
a85d7ed0 | 2382 | |
947216bf | 2383 | off = local_got_offsets[r_symndx]; |
a85d7ed0 | 2384 | |
947216bf AM |
2385 | /* The offset must always be a multiple of 8. We use |
2386 | the least significant bit to record whether we have | |
2387 | already generated the necessary reloc. */ | |
2388 | if ((off & 1) != 0) | |
2389 | off &= ~1; | |
2390 | else | |
2391 | { | |
2392 | bfd_put_64 (output_bfd, relocation, | |
f41345a7 | 2393 | htab->elf.sgot->contents + off); |
a85d7ed0 | 2394 | |
0e1862bb | 2395 | if (bfd_link_pic (info)) |
947216bf AM |
2396 | { |
2397 | asection *s; | |
2398 | Elf_Internal_Rela outrel; | |
2399 | bfd_byte *loc; | |
a85d7ed0 | 2400 | |
f41345a7 | 2401 | s = htab->elf.srelgot; |
947216bf | 2402 | if (s == NULL) |
0451c93c | 2403 | abort (); |
a85d7ed0 | 2404 | |
f41345a7 AK |
2405 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2406 | + htab->elf.sgot->output_offset | |
947216bf AM |
2407 | + off); |
2408 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); | |
a85d7ed0 | 2409 | outrel.r_addend = relocation; |
947216bf AM |
2410 | loc = s->contents; |
2411 | loc += s->reloc_count++ * sizeof (Elf64_External_Rela); | |
2412 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2413 | } | |
a85d7ed0 | 2414 | |
947216bf AM |
2415 | local_got_offsets[r_symndx] |= 1; |
2416 | } | |
2417 | } | |
a85d7ed0 | 2418 | |
0451c93c MS |
2419 | if (off >= (bfd_vma) -2) |
2420 | abort (); | |
2421 | ||
470b557a | 2422 | relocation = base_got->output_offset + off; |
0451c93c | 2423 | |
ae9a127f NC |
2424 | /* For @GOTENT the relocation is against the offset between |
2425 | the instruction and the symbols entry in the GOT and not | |
2426 | between the start of the GOT and the symbols entry. We | |
2427 | add the vma of the GOT to get the correct value. */ | |
5236c819 MS |
2428 | if ( r_type == R_390_GOTENT |
2429 | || r_type == R_390_GOTPLTENT) | |
470b557a | 2430 | relocation += base_got->output_section->vma; |
a85d7ed0 | 2431 | |
947216bf | 2432 | break; |
99c79b2e | 2433 | |
5236c819 MS |
2434 | case R_390_GOTOFF16: |
2435 | case R_390_GOTOFF32: | |
2436 | case R_390_GOTOFF64: | |
947216bf AM |
2437 | /* Relocation is relative to the start of the global offset |
2438 | table. */ | |
a85d7ed0 | 2439 | |
d47b13e0 AK |
2440 | if (h != NULL |
2441 | && s390_is_ifunc_symbol_p (h) | |
2442 | && h->def_regular | |
2443 | && !bfd_link_executable (info)) | |
2444 | { | |
2445 | relocation = (htab->elf.iplt->output_section->vma | |
2446 | + htab->elf.iplt->output_offset | |
2447 | + h->plt.offset | |
2448 | - htab->elf.sgot->output_section->vma); | |
2449 | goto do_relocation; | |
2450 | } | |
2451 | ||
947216bf AM |
2452 | /* Note that sgot->output_offset is not involved in this |
2453 | calculation. We always want the start of .got. If we | |
2454 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
2455 | permitted by the ABI, we might have to change this | |
2456 | calculation. */ | |
f41345a7 | 2457 | relocation -= htab->elf.sgot->output_section->vma; |
947216bf | 2458 | break; |
a85d7ed0 | 2459 | |
947216bf | 2460 | case R_390_GOTPC: |
a85d7ed0 | 2461 | case R_390_GOTPCDBL: |
947216bf | 2462 | /* Use global offset table as symbol value. */ |
f41345a7 | 2463 | relocation = htab->elf.sgot->output_section->vma; |
b34976b6 | 2464 | unresolved_reloc = FALSE; |
947216bf | 2465 | break; |
a85d7ed0 | 2466 | |
fb798c50 | 2467 | case R_390_PLT12DBL: |
947216bf | 2468 | case R_390_PLT16DBL: |
fb798c50 | 2469 | case R_390_PLT24DBL: |
947216bf AM |
2470 | case R_390_PLT32: |
2471 | case R_390_PLT32DBL: | |
2472 | case R_390_PLT64: | |
2473 | /* Relocation is to the entry for this symbol in the | |
2474 | procedure linkage table. */ | |
a85d7ed0 | 2475 | |
947216bf AM |
2476 | /* Resolve a PLT32 reloc against a local symbol directly, |
2477 | without using the procedure linkage table. */ | |
2478 | if (h == NULL) | |
2479 | break; | |
a85d7ed0 | 2480 | |
947216bf | 2481 | if (h->plt.offset == (bfd_vma) -1 |
31db78f6 | 2482 | || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h))) |
947216bf AM |
2483 | { |
2484 | /* We didn't make a PLT entry for this symbol. This | |
2485 | happens when statically linking PIC code, or when | |
2486 | using -Bsymbolic. */ | |
2487 | break; | |
2488 | } | |
470b557a AK |
2489 | if (s390_is_ifunc_symbol_p (h)) |
2490 | relocation = (htab->elf.iplt->output_section->vma | |
2491 | + htab->elf.iplt->output_offset | |
2492 | + h->plt.offset); | |
2493 | else | |
2494 | relocation = (htab->elf.splt->output_section->vma | |
2495 | + htab->elf.splt->output_offset | |
2496 | + h->plt.offset); | |
b34976b6 | 2497 | unresolved_reloc = FALSE; |
26e41594 | 2498 | break; |
5236c819 MS |
2499 | |
2500 | case R_390_PLTOFF16: | |
2501 | case R_390_PLTOFF32: | |
2502 | case R_390_PLTOFF64: | |
26e41594 AM |
2503 | /* Relocation is to the entry for this symbol in the |
2504 | procedure linkage table relative to the start of the GOT. */ | |
5236c819 MS |
2505 | |
2506 | /* For local symbols or if we didn't make a PLT entry for | |
2507 | this symbol resolve the symbol directly. */ | |
31db78f6 | 2508 | if (h == NULL |
5236c819 | 2509 | || h->plt.offset == (bfd_vma) -1 |
31db78f6 | 2510 | || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h))) |
5236c819 | 2511 | { |
f41345a7 | 2512 | relocation -= htab->elf.sgot->output_section->vma; |
5236c819 MS |
2513 | break; |
2514 | } | |
2515 | ||
470b557a AK |
2516 | if (s390_is_ifunc_symbol_p (h)) |
2517 | relocation = (htab->elf.iplt->output_section->vma | |
2518 | + htab->elf.iplt->output_offset | |
2519 | + h->plt.offset | |
2520 | - htab->elf.sgot->output_section->vma); | |
2521 | else | |
2522 | relocation = (htab->elf.splt->output_section->vma | |
2523 | + htab->elf.splt->output_offset | |
2524 | + h->plt.offset | |
2525 | - htab->elf.sgot->output_section->vma); | |
5236c819 | 2526 | unresolved_reloc = FALSE; |
947216bf AM |
2527 | break; |
2528 | ||
947216bf | 2529 | case R_390_PC16: |
fb798c50 | 2530 | case R_390_PC12DBL: |
947216bf | 2531 | case R_390_PC16DBL: |
fb798c50 | 2532 | case R_390_PC24DBL: |
947216bf | 2533 | case R_390_PC32: |
a85d7ed0 | 2534 | case R_390_PC32DBL: |
947216bf | 2535 | case R_390_PC64: |
431e5de3 AK |
2536 | if (h != NULL |
2537 | && bfd_link_pie (info) | |
2538 | && !h->def_regular) | |
2539 | { | |
871b3ab2 | 2540 | _bfd_error_handler (_("%pB: `%s' non-PLT reloc for symbol defined " |
431e5de3 AK |
2541 | "in shared library and accessed " |
2542 | "from executable " | |
2543 | "(rebuild file with -fPIC ?)"), | |
2544 | input_bfd, h->root.root.string); | |
2545 | bfd_set_error (bfd_error_bad_value); | |
2546 | return FALSE; | |
2547 | } | |
99ba5125 AK |
2548 | /* The target of these relocs are instruction operands |
2549 | residing in read-only sections. We cannot emit a runtime | |
2550 | reloc for it. */ | |
2551 | if (h != NULL | |
2552 | && s390_is_ifunc_symbol_p (h) | |
2553 | && h->def_regular | |
2554 | && bfd_link_pic (info)) | |
2555 | { | |
2556 | relocation = (htab->elf.iplt->output_section->vma | |
2557 | + htab->elf.iplt->output_offset | |
2558 | + h->plt.offset); | |
2559 | goto do_relocation; | |
2560 | } | |
1a0670f3 | 2561 | /* Fall through. */ |
99ba5125 AK |
2562 | |
2563 | case R_390_8: | |
2564 | case R_390_16: | |
2565 | case R_390_32: | |
2566 | case R_390_64: | |
470b557a | 2567 | |
f657f8c4 NC |
2568 | if ((input_section->flags & SEC_ALLOC) == 0) |
2569 | break; | |
2570 | ||
470b557a AK |
2571 | if (h != NULL |
2572 | && s390_is_ifunc_symbol_p (h) | |
2573 | && h->def_regular) | |
2574 | { | |
d7ab4911 | 2575 | if (!bfd_link_pic (info)) |
470b557a | 2576 | { |
d7ab4911 AK |
2577 | /* For a non-shared object the symbol will not |
2578 | change. Hence we can write the address of the | |
2579 | target IPLT slot now. */ | |
470b557a AK |
2580 | relocation = (htab->elf.iplt->output_section->vma |
2581 | + htab->elf.iplt->output_offset | |
2582 | + h ->plt.offset); | |
2583 | goto do_relocation; | |
2584 | } | |
2585 | else | |
2586 | { | |
2587 | /* For shared objects a runtime relocation is needed. */ | |
2588 | ||
2589 | Elf_Internal_Rela outrel; | |
2590 | asection *sreloc; | |
2591 | ||
2592 | /* Need a dynamic relocation to get the real function | |
2593 | address. */ | |
2594 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
2595 | info, | |
2596 | input_section, | |
2597 | rel->r_offset); | |
2598 | if (outrel.r_offset == (bfd_vma) -1 | |
2599 | || outrel.r_offset == (bfd_vma) -2) | |
2600 | abort (); | |
2601 | ||
2602 | outrel.r_offset += (input_section->output_section->vma | |
2603 | + input_section->output_offset); | |
2604 | ||
2605 | if (h->dynindx == -1 | |
2606 | || h->forced_local | |
0e1862bb | 2607 | || bfd_link_executable (info)) |
470b557a AK |
2608 | { |
2609 | /* This symbol is resolved locally. */ | |
2610 | outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE); | |
2611 | outrel.r_addend = (h->root.u.def.value | |
2612 | + h->root.u.def.section->output_section->vma | |
2613 | + h->root.u.def.section->output_offset); | |
2614 | } | |
2615 | else | |
2616 | { | |
2617 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); | |
2618 | outrel.r_addend = 0; | |
2619 | } | |
2620 | ||
2621 | sreloc = htab->elf.irelifunc; | |
2622 | elf_append_rela (output_bfd, sreloc, &outrel); | |
2623 | ||
2624 | /* If this reloc is against an external symbol, we | |
2625 | do not want to fiddle with the addend. Otherwise, | |
2626 | we need to include the symbol value so that it | |
2627 | becomes an addend for the dynamic reloc. For an | |
2628 | internal symbol, we have updated addend. */ | |
2629 | continue; | |
2630 | } | |
2631 | } | |
2632 | ||
0e1862bb | 2633 | if ((bfd_link_pic (info) |
82058a73 | 2634 | && (h == NULL |
b27bb18f L |
2635 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2636 | && !resolved_to_zero) | |
82058a73 | 2637 | || h->root.type != bfd_link_hash_undefweak) |
0451c93c | 2638 | && ((r_type != R_390_PC16 |
fb798c50 | 2639 | && r_type != R_390_PC12DBL |
0451c93c | 2640 | && r_type != R_390_PC16DBL |
fb798c50 | 2641 | && r_type != R_390_PC24DBL |
0451c93c MS |
2642 | && r_type != R_390_PC32 |
2643 | && r_type != R_390_PC32DBL | |
2644 | && r_type != R_390_PC64) | |
8c21ca21 | 2645 | || !SYMBOL_CALLS_LOCAL (info, h))) |
64285810 | 2646 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 2647 | && !bfd_link_pic (info) |
0451c93c MS |
2648 | && h != NULL |
2649 | && h->dynindx != -1 | |
f5385ebf AM |
2650 | && !h->non_got_ref |
2651 | && ((h->def_dynamic | |
2652 | && !h->def_regular) | |
0451c93c MS |
2653 | || h->root.type == bfd_link_hash_undefweak |
2654 | || h->root.type == bfd_link_hash_undefined))) | |
947216bf AM |
2655 | { |
2656 | Elf_Internal_Rela outrel; | |
b34976b6 | 2657 | bfd_boolean skip, relocate; |
0451c93c | 2658 | asection *sreloc; |
947216bf | 2659 | bfd_byte *loc; |
a85d7ed0 | 2660 | |
947216bf AM |
2661 | /* When generating a shared object, these relocations |
2662 | are copied into the output file to be resolved at run | |
2663 | time. */ | |
b34976b6 AM |
2664 | skip = FALSE; |
2665 | relocate = FALSE; | |
a85d7ed0 | 2666 | |
c629eae0 JJ |
2667 | outrel.r_offset = |
2668 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2669 | rel->r_offset); | |
2670 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2671 | skip = TRUE; |
0bb2d96a | 2672 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2673 | skip = TRUE, relocate = TRUE; |
a85d7ed0 | 2674 | |
947216bf AM |
2675 | outrel.r_offset += (input_section->output_section->vma |
2676 | + input_section->output_offset); | |
a85d7ed0 | 2677 | |
947216bf | 2678 | if (skip) |
0bb2d96a | 2679 | memset (&outrel, 0, sizeof outrel); |
947216bf | 2680 | else if (h != NULL |
0451c93c MS |
2681 | && h->dynindx != -1 |
2682 | && (r_type == R_390_PC16 | |
fb798c50 | 2683 | || r_type == R_390_PC12DBL |
0451c93c | 2684 | || r_type == R_390_PC16DBL |
fb798c50 | 2685 | || r_type == R_390_PC24DBL |
0451c93c MS |
2686 | || r_type == R_390_PC32 |
2687 | || r_type == R_390_PC32DBL | |
2688 | || r_type == R_390_PC64 | |
0e1862bb | 2689 | || !bfd_link_pic (info) |
8c21ca21 | 2690 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 2691 | || !h->def_regular)) |
947216bf AM |
2692 | { |
2693 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); | |
27018c3f | 2694 | outrel.r_addend = rel->r_addend; |
947216bf AM |
2695 | } |
2696 | else | |
2697 | { | |
0451c93c | 2698 | /* This symbol is local, or marked to become local. */ |
90ced0dd | 2699 | outrel.r_addend = relocation + rel->r_addend; |
b5727d75 MS |
2700 | if (r_type == R_390_64) |
2701 | { | |
2702 | relocate = TRUE; | |
2703 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); | |
b5727d75 MS |
2704 | } |
2705 | else | |
2706 | { | |
2707 | long sindx; | |
2708 | ||
90ced0dd | 2709 | if (bfd_is_abs_section (sec)) |
b5727d75 MS |
2710 | sindx = 0; |
2711 | else if (sec == NULL || sec->owner == NULL) | |
2712 | { | |
2713 | bfd_set_error(bfd_error_bad_value); | |
2714 | return FALSE; | |
2715 | } | |
2716 | else | |
2717 | { | |
2718 | asection *osec; | |
2719 | ||
2720 | osec = sec->output_section; | |
2721 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
2722 | |
2723 | if (sindx == 0) | |
2724 | { | |
2725 | osec = htab->elf.text_index_section; | |
2726 | sindx = elf_section_data (osec)->dynindx; | |
2727 | } | |
2728 | BFD_ASSERT (sindx != 0); | |
90ced0dd MS |
2729 | |
2730 | /* We are turning this relocation into one | |
2731 | against a section symbol, so subtract out | |
2732 | the output section's address but not the | |
2733 | offset of the input section in the output | |
2734 | section. */ | |
90ced0dd | 2735 | outrel.r_addend -= osec->vma; |
b5727d75 MS |
2736 | } |
2737 | outrel.r_info = ELF64_R_INFO (sindx, r_type); | |
b5727d75 | 2738 | } |
0451c93c | 2739 | } |
a85d7ed0 | 2740 | |
0451c93c MS |
2741 | sreloc = elf_section_data (input_section)->sreloc; |
2742 | if (sreloc == NULL) | |
2743 | abort (); | |
2744 | ||
947216bf AM |
2745 | loc = sreloc->contents; |
2746 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
2747 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
a85d7ed0 | 2748 | |
947216bf AM |
2749 | /* If this reloc is against an external symbol, we do |
2750 | not want to fiddle with the addend. Otherwise, we | |
2751 | need to include the symbol value so that it becomes | |
2752 | an addend for the dynamic reloc. */ | |
2753 | if (! relocate) | |
2754 | continue; | |
2755 | } | |
a85d7ed0 | 2756 | |
947216bf | 2757 | break; |
a85d7ed0 | 2758 | |
69fc87f1 MS |
2759 | /* Relocations for tls literal pool entries. */ |
2760 | case R_390_TLS_IE64: | |
0e1862bb | 2761 | if (bfd_link_pic (info)) |
69fc87f1 MS |
2762 | { |
2763 | Elf_Internal_Rela outrel; | |
2764 | asection *sreloc; | |
2765 | bfd_byte *loc; | |
2766 | ||
2767 | outrel.r_offset = rel->r_offset | |
2768 | + input_section->output_section->vma | |
2769 | + input_section->output_offset; | |
2770 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); | |
2771 | sreloc = elf_section_data (input_section)->sreloc; | |
2772 | if (sreloc == NULL) | |
2773 | abort (); | |
2774 | loc = sreloc->contents; | |
2775 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
2776 | bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc); | |
2777 | } | |
ae9a127f | 2778 | /* Fall through. */ |
69fc87f1 MS |
2779 | |
2780 | case R_390_TLS_GD64: | |
2781 | case R_390_TLS_GOTIE64: | |
2782 | r_type = elf_s390_tls_transition (info, r_type, h == NULL); | |
2783 | tls_type = GOT_UNKNOWN; | |
2784 | if (h == NULL && local_got_offsets) | |
2785 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
2786 | else if (h != NULL) | |
2787 | { | |
2788 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
0e1862bb | 2789 | if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE) |
69fc87f1 MS |
2790 | r_type = R_390_TLS_LE64; |
2791 | } | |
2792 | if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE) | |
2793 | r_type = R_390_TLS_IE64; | |
2794 | ||
2795 | if (r_type == R_390_TLS_LE64) | |
2796 | { | |
2797 | /* This relocation gets optimized away by the local exec | |
2798 | access optimization. */ | |
2799 | BFD_ASSERT (! unresolved_reloc); | |
2800 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
2801 | contents + rel->r_offset); | |
2802 | continue; | |
2803 | } | |
2804 | ||
f41345a7 | 2805 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2806 | abort (); |
2807 | ||
2808 | if (h != NULL) | |
2809 | off = h->got.offset; | |
2810 | else | |
2811 | { | |
2812 | if (local_got_offsets == NULL) | |
2813 | abort (); | |
2814 | ||
2815 | off = local_got_offsets[r_symndx]; | |
2816 | } | |
2817 | ||
2818 | emit_tls_relocs: | |
2819 | ||
2820 | if ((off & 1) != 0) | |
2821 | off &= ~1; | |
26e41594 | 2822 | else |
69fc87f1 MS |
2823 | { |
2824 | Elf_Internal_Rela outrel; | |
2825 | bfd_byte *loc; | |
2826 | int dr_type, indx; | |
2827 | ||
f41345a7 | 2828 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2829 | abort (); |
2830 | ||
f41345a7 AK |
2831 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2832 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2833 | |
2834 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
2835 | if (r_type == R_390_TLS_GD64) | |
2836 | dr_type = R_390_TLS_DTPMOD; | |
2837 | else | |
2838 | dr_type = R_390_TLS_TPOFF; | |
2839 | if (dr_type == R_390_TLS_TPOFF && indx == 0) | |
2840 | outrel.r_addend = relocation - dtpoff_base (info); | |
2841 | else | |
2842 | outrel.r_addend = 0; | |
2843 | outrel.r_info = ELF64_R_INFO (indx, dr_type); | |
f41345a7 AK |
2844 | loc = htab->elf.srelgot->contents; |
2845 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
2846 | * sizeof (Elf64_External_Rela); |
2847 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2848 | ||
2849 | if (r_type == R_390_TLS_GD64) | |
2850 | { | |
2851 | if (indx == 0) | |
2852 | { | |
07d6d2b8 | 2853 | BFD_ASSERT (! unresolved_reloc); |
69fc87f1 MS |
2854 | bfd_put_64 (output_bfd, |
2855 | relocation - dtpoff_base (info), | |
f41345a7 | 2856 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2857 | } |
2858 | else | |
2859 | { | |
2860 | outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF); | |
2861 | outrel.r_offset += GOT_ENTRY_SIZE; | |
2862 | outrel.r_addend = 0; | |
f41345a7 | 2863 | htab->elf.srelgot->reloc_count++; |
69fc87f1 MS |
2864 | loc += sizeof (Elf64_External_Rela); |
2865 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2866 | } | |
2867 | } | |
2868 | ||
2869 | if (h != NULL) | |
2870 | h->got.offset |= 1; | |
2871 | else | |
2872 | local_got_offsets[r_symndx] |= 1; | |
2873 | } | |
2874 | ||
2875 | if (off >= (bfd_vma) -2) | |
2876 | abort (); | |
2877 | if (r_type == ELF64_R_TYPE (rel->r_info)) | |
2878 | { | |
f41345a7 | 2879 | relocation = htab->elf.sgot->output_offset + off; |
69fc87f1 | 2880 | if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT) |
f41345a7 | 2881 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
2882 | unresolved_reloc = FALSE; |
2883 | } | |
2884 | else | |
2885 | { | |
f41345a7 | 2886 | bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off, |
69fc87f1 MS |
2887 | contents + rel->r_offset); |
2888 | continue; | |
2889 | } | |
2890 | break; | |
2891 | ||
2892 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 2893 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
2894 | case R_390_TLS_IEENT: |
2895 | if (h == NULL) | |
2896 | { | |
2897 | if (local_got_offsets == NULL) | |
2898 | abort(); | |
2899 | off = local_got_offsets[r_symndx]; | |
0e1862bb | 2900 | if (bfd_link_pic (info)) |
69fc87f1 MS |
2901 | goto emit_tls_relocs; |
2902 | } | |
2903 | else | |
2904 | { | |
2905 | off = h->got.offset; | |
2906 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
0e1862bb | 2907 | if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE) |
69fc87f1 MS |
2908 | goto emit_tls_relocs; |
2909 | } | |
2910 | ||
f41345a7 | 2911 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2912 | abort (); |
2913 | ||
2914 | BFD_ASSERT (! unresolved_reloc); | |
2915 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
f41345a7 AK |
2916 | htab->elf.sgot->contents + off); |
2917 | relocation = htab->elf.sgot->output_offset + off; | |
69fc87f1 | 2918 | if (r_type == R_390_TLS_IEENT) |
f41345a7 | 2919 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
2920 | unresolved_reloc = FALSE; |
2921 | break; | |
2922 | ||
2923 | case R_390_TLS_LDM64: | |
0e1862bb | 2924 | if (! bfd_link_pic (info)) |
69fc87f1 MS |
2925 | /* The literal pool entry this relocation refers to gets ignored |
2926 | by the optimized code of the local exec model. Do nothing | |
2927 | and the value will turn out zero. */ | |
2928 | continue; | |
2929 | ||
f41345a7 | 2930 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2931 | abort (); |
2932 | ||
2933 | off = htab->tls_ldm_got.offset; | |
2934 | if (off & 1) | |
2935 | off &= ~1; | |
2936 | else | |
2937 | { | |
2938 | Elf_Internal_Rela outrel; | |
2939 | bfd_byte *loc; | |
2940 | ||
f41345a7 | 2941 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2942 | abort (); |
2943 | ||
f41345a7 AK |
2944 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2945 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2946 | |
2947 | bfd_put_64 (output_bfd, 0, | |
f41345a7 | 2948 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2949 | outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD); |
2950 | outrel.r_addend = 0; | |
f41345a7 AK |
2951 | loc = htab->elf.srelgot->contents; |
2952 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
2953 | * sizeof (Elf64_External_Rela); |
2954 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2955 | htab->tls_ldm_got.offset |= 1; | |
2956 | } | |
f41345a7 | 2957 | relocation = htab->elf.sgot->output_offset + off; |
26e41594 | 2958 | unresolved_reloc = FALSE; |
69fc87f1 MS |
2959 | break; |
2960 | ||
2961 | case R_390_TLS_LE64: | |
3cbc1e5e | 2962 | if (bfd_link_dll (info)) |
69fc87f1 MS |
2963 | { |
2964 | /* Linking a shared library with non-fpic code requires | |
2965 | a R_390_TLS_TPOFF relocation. */ | |
2966 | Elf_Internal_Rela outrel; | |
2967 | asection *sreloc; | |
2968 | bfd_byte *loc; | |
2969 | int indx; | |
2970 | ||
2971 | outrel.r_offset = rel->r_offset | |
2972 | + input_section->output_section->vma | |
2973 | + input_section->output_offset; | |
2974 | if (h != NULL && h->dynindx != -1) | |
2975 | indx = h->dynindx; | |
2976 | else | |
2977 | indx = 0; | |
2978 | outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF); | |
2979 | if (indx == 0) | |
2980 | outrel.r_addend = relocation - dtpoff_base (info); | |
2981 | else | |
2982 | outrel.r_addend = 0; | |
2983 | sreloc = elf_section_data (input_section)->sreloc; | |
2984 | if (sreloc == NULL) | |
2985 | abort (); | |
2986 | loc = sreloc->contents; | |
2987 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
2988 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2989 | } | |
2990 | else | |
2991 | { | |
2992 | BFD_ASSERT (! unresolved_reloc); | |
2993 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
2994 | contents + rel->r_offset); | |
2995 | } | |
2996 | continue; | |
2997 | ||
2998 | case R_390_TLS_LDO64: | |
0e1862bb | 2999 | if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING)) |
69fc87f1 MS |
3000 | relocation -= dtpoff_base (info); |
3001 | else | |
3002 | /* When converting LDO to LE, we must negate. */ | |
3003 | relocation = -tpoff (info, relocation); | |
3004 | break; | |
3005 | ||
3006 | /* Relocations for tls instructions. */ | |
3007 | case R_390_TLS_LOAD: | |
3008 | case R_390_TLS_GDCALL: | |
3009 | case R_390_TLS_LDCALL: | |
3010 | tls_type = GOT_UNKNOWN; | |
3011 | if (h == NULL && local_got_offsets) | |
3012 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
3013 | else if (h != NULL) | |
3014 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
3015 | ||
3016 | if (tls_type == GOT_TLS_GD) | |
3017 | continue; | |
3018 | ||
3019 | if (r_type == R_390_TLS_LOAD) | |
3020 | { | |
0e1862bb | 3021 | if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) |
69fc87f1 MS |
3022 | { |
3023 | /* IE->LE transition. Four valid cases: | |
3024 | lg %rx,(0,%ry) -> sllg %rx,%ry,0 | |
3025 | lg %rx,(%ry,0) -> sllg %rx,%ry,0 | |
3026 | lg %rx,(%ry,%r12) -> sllg %rx,%ry,0 | |
3027 | lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */ | |
3028 | unsigned int insn0, insn1, ry; | |
3029 | ||
3030 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3031 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
3032 | if (insn1 != 0x0004) | |
3704e358 AK |
3033 | { |
3034 | invalid_tls_insn (input_bfd, input_section, rel); | |
3035 | return FALSE; | |
3036 | } | |
69fc87f1 MS |
3037 | if ((insn0 & 0xff00f000) == 0xe3000000) |
3038 | /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */ | |
3039 | ry = (insn0 & 0x000f0000); | |
3040 | else if ((insn0 & 0xff0f0000) == 0xe3000000) | |
3041 | /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */ | |
3042 | ry = (insn0 & 0x0000f000) << 4; | |
3043 | else if ((insn0 & 0xff00f000) == 0xe300c000) | |
3044 | /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */ | |
3045 | ry = (insn0 & 0x000f0000); | |
3046 | else if ((insn0 & 0xff0f0000) == 0xe30c0000) | |
3047 | /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */ | |
3048 | ry = (insn0 & 0x0000f000) << 4; | |
3049 | else | |
3704e358 AK |
3050 | { |
3051 | invalid_tls_insn (input_bfd, input_section, rel); | |
3052 | return FALSE; | |
3053 | } | |
69fc87f1 MS |
3054 | insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry; |
3055 | insn1 = 0x000d; | |
3056 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
3057 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
3058 | } | |
3059 | } | |
3060 | else if (r_type == R_390_TLS_GDCALL) | |
3061 | { | |
3062 | unsigned int insn0, insn1; | |
3063 | ||
3064 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3065 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
3066 | if ((insn0 & 0xffff0000) != 0xc0e50000) | |
3704e358 AK |
3067 | { |
3068 | invalid_tls_insn (input_bfd, input_section, rel); | |
3069 | return FALSE; | |
3070 | } | |
0e1862bb | 3071 | if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) |
69fc87f1 MS |
3072 | { |
3073 | /* GD->LE transition. | |
3074 | brasl %r14,__tls_get_addr@plt -> brcl 0,. */ | |
3075 | insn0 = 0xc0040000; | |
3076 | insn1 = 0x0000; | |
3077 | } | |
3078 | else | |
3079 | { | |
3080 | /* GD->IE transition. | |
3081 | brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */ | |
3082 | insn0 = 0xe322c000; | |
3083 | insn1 = 0x0004; | |
3084 | } | |
3085 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
3086 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
3087 | } | |
3088 | else if (r_type == R_390_TLS_LDCALL) | |
3089 | { | |
0e1862bb | 3090 | if (!bfd_link_pic (info)) |
69fc87f1 MS |
3091 | { |
3092 | unsigned int insn0, insn1; | |
3093 | ||
3094 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3095 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
3096 | if ((insn0 & 0xffff0000) != 0xc0e50000) | |
3704e358 AK |
3097 | { |
3098 | invalid_tls_insn (input_bfd, input_section, rel); | |
3099 | return FALSE; | |
3100 | } | |
69fc87f1 MS |
3101 | /* LD->LE transition. |
3102 | brasl %r14,__tls_get_addr@plt -> brcl 0,. */ | |
3103 | insn0 = 0xc0040000; | |
3104 | insn1 = 0x0000; | |
3105 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
3106 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
3107 | } | |
3108 | } | |
3109 | continue; | |
3110 | ||
947216bf AM |
3111 | default: |
3112 | break; | |
3113 | } | |
a85d7ed0 | 3114 | |
239e1f3a AM |
3115 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3116 | because such sections are not SEC_ALLOC and thus ld.so will | |
3117 | not process them. */ | |
0451c93c | 3118 | if (unresolved_reloc |
239e1f3a | 3119 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
3120 | && h->def_dynamic) |
3121 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
3122 | rel->r_offset) != (bfd_vma) -1) | |
4eca0228 | 3123 | _bfd_error_handler |
695344c0 | 3124 | /* xgettext:c-format */ |
2dcf00ce AM |
3125 | (_("%pB(%pA+%#" PRIx64 "): " |
3126 | "unresolvable %s relocation against symbol `%s'"), | |
d003868e AM |
3127 | input_bfd, |
3128 | input_section, | |
2dcf00ce | 3129 | (uint64_t) rel->r_offset, |
843fe662 | 3130 | howto->name, |
0451c93c MS |
3131 | h->root.root.string); |
3132 | ||
470b557a AK |
3133 | do_relocation: |
3134 | ||
fb798c50 AK |
3135 | /* When applying a 24 bit reloc we need to start one byte |
3136 | earlier. Otherwise the 32 bit get/put bfd operations might | |
3137 | access a byte after the actual section. */ | |
3138 | if (r_type == R_390_PC24DBL | |
3139 | || r_type == R_390_PLT24DBL) | |
3140 | rel->r_offset--; | |
3141 | ||
bd1ea41b MS |
3142 | if (r_type == R_390_20 |
3143 | || r_type == R_390_GOT20 | |
3144 | || r_type == R_390_GOTPLT20 | |
3145 | || r_type == R_390_TLS_GOTIE20) | |
3146 | { | |
3147 | relocation += rel->r_addend; | |
3148 | relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12; | |
3149 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3150 | contents, rel->r_offset, | |
3151 | relocation, 0); | |
3152 | } | |
3153 | else | |
3154 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
a85d7ed0 NC |
3155 | contents, rel->r_offset, |
3156 | relocation, rel->r_addend); | |
3157 | ||
3158 | if (r != bfd_reloc_ok) | |
3159 | { | |
0451c93c | 3160 | const char *name; |
ec338859 | 3161 | |
0451c93c MS |
3162 | if (h != NULL) |
3163 | name = h->root.root.string; | |
3164 | else | |
a85d7ed0 | 3165 | { |
0451c93c MS |
3166 | name = bfd_elf_string_from_elf_section (input_bfd, |
3167 | symtab_hdr->sh_link, | |
3168 | sym->st_name); | |
3169 | if (name == NULL) | |
b34976b6 | 3170 | return FALSE; |
0451c93c MS |
3171 | if (*name == '\0') |
3172 | name = bfd_section_name (input_bfd, sec); | |
3173 | } | |
ec338859 | 3174 | |
0451c93c | 3175 | if (r == bfd_reloc_overflow) |
1a72702b AM |
3176 | (*info->callbacks->reloc_overflow) |
3177 | (info, (h ? &h->root : NULL), name, howto->name, | |
3178 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
0451c93c MS |
3179 | else |
3180 | { | |
4eca0228 | 3181 | _bfd_error_handler |
695344c0 | 3182 | /* xgettext:c-format */ |
2dcf00ce | 3183 | (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"), |
d003868e | 3184 | input_bfd, input_section, |
2dcf00ce | 3185 | (uint64_t) rel->r_offset, name, (int) r); |
b34976b6 | 3186 | return FALSE; |
a85d7ed0 NC |
3187 | } |
3188 | } | |
3189 | } | |
3190 | ||
b34976b6 | 3191 | return TRUE; |
a85d7ed0 NC |
3192 | } |
3193 | ||
470b557a AK |
3194 | /* Generate the PLT slots together with the dynamic relocations needed |
3195 | for IFUNC symbols. */ | |
3196 | ||
3197 | static void | |
3198 | elf_s390_finish_ifunc_symbol (bfd *output_bfd, | |
3199 | struct bfd_link_info *info, | |
3200 | struct elf_link_hash_entry *h, | |
3201 | struct elf_s390_link_hash_table *htab, | |
3202 | bfd_vma plt_offset, | |
3203 | bfd_vma resolver_address) | |
3204 | { | |
3205 | bfd_vma plt_index; | |
3206 | bfd_vma got_offset; | |
3207 | Elf_Internal_Rela rela; | |
3208 | bfd_byte *loc; | |
3209 | asection *plt, *gotplt, *relplt; | |
3210 | ||
3211 | if (htab->elf.iplt == NULL | |
3212 | || htab->elf.igotplt == NULL | |
3213 | || htab->elf.irelplt == NULL) | |
3214 | abort (); | |
3215 | ||
3216 | /* Index of the PLT slot within iplt section. */ | |
3217 | plt_index = plt_offset / PLT_ENTRY_SIZE; | |
3218 | plt = htab->elf.iplt; | |
3219 | /* Offset into the igot.plt section. */ | |
3220 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
3221 | gotplt = htab->elf.igotplt; | |
3222 | relplt = htab->elf.irelplt; | |
3223 | ||
3224 | /* Fill in the blueprint of a PLT. */ | |
3225 | memcpy (plt->contents + plt_offset, elf_s390x_plt_entry, | |
3226 | PLT_ENTRY_SIZE); | |
3227 | ||
3228 | /* Fixup the relative address to the GOT entry */ | |
3229 | bfd_put_32 (output_bfd, | |
3230 | (gotplt->output_section->vma + | |
3231 | gotplt->output_offset + got_offset | |
3232 | - (plt->output_section->vma + | |
3233 | plt->output_offset + | |
3234 | plt_offset))/2, | |
3235 | plt->contents + plt_offset + 2); | |
3236 | /* Fixup the relative branch to PLT 0 */ | |
3237 | bfd_put_32 (output_bfd, - (plt->output_offset + | |
3238 | (PLT_ENTRY_SIZE * plt_index) + 22)/2, | |
3239 | plt->contents + plt_offset + 24); | |
3240 | /* Fixup offset into .rela.plt section. */ | |
3241 | bfd_put_32 (output_bfd, relplt->output_offset + | |
3242 | plt_index * sizeof (Elf64_External_Rela), | |
3243 | plt->contents + plt_offset + 28); | |
3244 | ||
3245 | /* Fill in the entry in the global offset table. | |
3246 | Points to instruction after GOT offset. */ | |
3247 | bfd_put_64 (output_bfd, | |
3248 | (plt->output_section->vma | |
3249 | + plt->output_offset | |
3250 | + plt_offset | |
3251 | + 14), | |
3252 | gotplt->contents + got_offset); | |
3253 | ||
3254 | /* Fill in the entry in the .rela.plt section. */ | |
3255 | rela.r_offset = (gotplt->output_section->vma | |
3256 | + gotplt->output_offset | |
3257 | + got_offset); | |
3258 | ||
3259 | if (!h | |
3260 | || h->dynindx == -1 | |
0e1862bb | 3261 | || ((bfd_link_executable (info) |
470b557a AK |
3262 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
3263 | && h->def_regular)) | |
3264 | { | |
3265 | /* The symbol can be locally resolved. */ | |
3266 | rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE); | |
3267 | rela.r_addend = resolver_address; | |
3268 | } | |
3269 | else | |
3270 | { | |
3271 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3272 | rela.r_addend = 0; | |
3273 | } | |
3274 | ||
3275 | loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela); | |
3276 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
3277 | } | |
3278 | ||
3279 | ||
a85d7ed0 NC |
3280 | /* Finish up dynamic symbol handling. We set the contents of various |
3281 | dynamic sections here. */ | |
3282 | ||
b34976b6 | 3283 | static bfd_boolean |
4dfe6ac6 NC |
3284 | elf_s390_finish_dynamic_symbol (bfd *output_bfd, |
3285 | struct bfd_link_info *info, | |
3286 | struct elf_link_hash_entry *h, | |
3287 | Elf_Internal_Sym *sym) | |
a85d7ed0 | 3288 | { |
0451c93c | 3289 | struct elf_s390_link_hash_table *htab; |
470b557a | 3290 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h; |
a85d7ed0 | 3291 | |
0451c93c | 3292 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
3293 | if (htab == NULL) |
3294 | return FALSE; | |
a85d7ed0 NC |
3295 | |
3296 | if (h->plt.offset != (bfd_vma) -1) | |
3297 | { | |
a85d7ed0 | 3298 | bfd_vma plt_index; |
0451c93c MS |
3299 | bfd_vma got_offset; |
3300 | Elf_Internal_Rela rela; | |
947216bf | 3301 | bfd_byte *loc; |
a85d7ed0 NC |
3302 | |
3303 | /* This symbol has an entry in the procedure linkage table. Set | |
947216bf | 3304 | it up. */ |
0a511368 | 3305 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) |
470b557a | 3306 | { |
0a511368 AK |
3307 | elf_s390_finish_ifunc_symbol (output_bfd, info, h, |
3308 | htab, h->plt.offset, | |
3309 | eh->ifunc_resolver_address + | |
3310 | eh->ifunc_resolver_section->output_offset + | |
3311 | eh->ifunc_resolver_section->output_section->vma); | |
3312 | ||
3313 | /* Do not return yet. Handling of explicit GOT slots of | |
3314 | IFUNC symbols is below. */ | |
470b557a AK |
3315 | } |
3316 | else | |
3317 | { | |
3318 | if (h->dynindx == -1 | |
3319 | || htab->elf.splt == NULL | |
3320 | || htab->elf.sgotplt == NULL | |
3321 | || htab->elf.srelplt == NULL) | |
3322 | abort (); | |
a85d7ed0 | 3323 | |
470b557a AK |
3324 | /* Calc. index no. |
3325 | Current offset - size first entry / entry size. */ | |
3326 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
a85d7ed0 | 3327 | |
470b557a AK |
3328 | /* Offset in GOT is PLT index plus GOT headers(3) times 8, |
3329 | addr & GOT addr. */ | |
3330 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
a85d7ed0 | 3331 | |
470b557a AK |
3332 | /* Fill in the blueprint of a PLT. */ |
3333 | memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry, | |
3334 | PLT_ENTRY_SIZE); | |
3335 | ||
3336 | /* Fixup the relative address to the GOT entry */ | |
3337 | bfd_put_32 (output_bfd, | |
3338 | (htab->elf.sgotplt->output_section->vma + | |
3339 | htab->elf.sgotplt->output_offset + got_offset | |
3340 | - (htab->elf.splt->output_section->vma + | |
3341 | htab->elf.splt->output_offset + | |
3342 | h->plt.offset))/2, | |
3343 | htab->elf.splt->contents + h->plt.offset + 2); | |
3344 | /* Fixup the relative branch to PLT 0 */ | |
3345 | bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE + | |
3346 | (PLT_ENTRY_SIZE * plt_index) + 22)/2, | |
3347 | htab->elf.splt->contents + h->plt.offset + 24); | |
3348 | /* Fixup offset into .rela.plt section. */ | |
3349 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela), | |
3350 | htab->elf.splt->contents + h->plt.offset + 28); | |
3351 | ||
3352 | /* Fill in the entry in the global offset table. | |
3353 | Points to instruction after GOT offset. */ | |
3354 | bfd_put_64 (output_bfd, | |
3355 | (htab->elf.splt->output_section->vma | |
3356 | + htab->elf.splt->output_offset | |
3357 | + h->plt.offset | |
3358 | + 14), | |
3359 | htab->elf.sgotplt->contents + got_offset); | |
3360 | ||
3361 | /* Fill in the entry in the .rela.plt section. */ | |
3362 | rela.r_offset = (htab->elf.sgotplt->output_section->vma | |
3363 | + htab->elf.sgotplt->output_offset | |
3364 | + got_offset); | |
3365 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3366 | rela.r_addend = 0; | |
3367 | loc = htab->elf.srelplt->contents + plt_index * | |
3368 | sizeof (Elf64_External_Rela); | |
3369 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
3370 | ||
3371 | if (!h->def_regular) | |
3372 | { | |
3373 | /* Mark the symbol as undefined, rather than as defined in | |
3374 | the .plt section. Leave the value alone. This is a clue | |
3375 | for the dynamic linker, to make function pointer | |
3376 | comparisons work between an application and shared | |
3377 | library. */ | |
3378 | sym->st_shndx = SHN_UNDEF; | |
3379 | } | |
a85d7ed0 NC |
3380 | } |
3381 | } | |
3382 | ||
69fc87f1 MS |
3383 | if (h->got.offset != (bfd_vma) -1 |
3384 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD | |
3385 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE | |
3386 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT) | |
a85d7ed0 | 3387 | { |
a85d7ed0 | 3388 | Elf_Internal_Rela rela; |
947216bf | 3389 | bfd_byte *loc; |
a85d7ed0 NC |
3390 | |
3391 | /* This symbol has an entry in the global offset table. Set it | |
947216bf | 3392 | up. */ |
f41345a7 | 3393 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
0451c93c | 3394 | abort (); |
a85d7ed0 | 3395 | |
f41345a7 AK |
3396 | rela.r_offset = (htab->elf.sgot->output_section->vma |
3397 | + htab->elf.sgot->output_offset | |
dc810e39 | 3398 | + (h->got.offset &~ (bfd_vma) 1)); |
a85d7ed0 | 3399 | |
470b557a AK |
3400 | if (h->def_regular && s390_is_ifunc_symbol_p (h)) |
3401 | { | |
0e1862bb | 3402 | if (bfd_link_pic (info)) |
470b557a AK |
3403 | { |
3404 | /* An explicit GOT slot usage needs GLOB_DAT. If the | |
3405 | symbol references local the implicit got.iplt slot | |
3406 | will be used and the IRELATIVE reloc has been created | |
3407 | above. */ | |
3408 | goto do_glob_dat; | |
3409 | } | |
3410 | else | |
3411 | { | |
3412 | /* For non-shared objects explicit GOT slots must be | |
3413 | filled with the PLT slot address for pointer | |
3414 | equality reasons. */ | |
3415 | bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma | |
3416 | + htab->elf.iplt->output_offset | |
3417 | + h->plt.offset), | |
3418 | htab->elf.sgot->contents + h->got.offset); | |
3419 | return TRUE; | |
3420 | } | |
3421 | } | |
0e1862bb | 3422 | else if (bfd_link_pic (info) |
ceada896 | 3423 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
947216bf | 3424 | { |
10e7c045 AK |
3425 | if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
3426 | return TRUE; | |
3427 | ||
470b557a AK |
3428 | /* If this is a static link, or it is a -Bsymbolic link and |
3429 | the symbol is defined locally or was forced to be local | |
3430 | because of a version file, we just want to emit a | |
3431 | RELATIVE reloc. The entry in the global offset table | |
3432 | will already have been initialized in the | |
3433 | relocate_section function. */ | |
8170f769 | 3434 | if (!(h->def_regular || ELF_COMMON_DEF_P (h))) |
8c21ca21 | 3435 | return FALSE; |
0451c93c | 3436 | BFD_ASSERT((h->got.offset & 1) != 0); |
947216bf AM |
3437 | rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE); |
3438 | rela.r_addend = (h->root.u.def.value | |
3439 | + h->root.u.def.section->output_section->vma | |
3440 | + h->root.u.def.section->output_offset); | |
3441 | } | |
a85d7ed0 NC |
3442 | else |
3443 | { | |
3444 | BFD_ASSERT((h->got.offset & 1) == 0); | |
ceada896 | 3445 | do_glob_dat: |
f41345a7 | 3446 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset); |
a85d7ed0 | 3447 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT); |
947216bf AM |
3448 | rela.r_addend = 0; |
3449 | } | |
a85d7ed0 | 3450 | |
f41345a7 AK |
3451 | loc = htab->elf.srelgot->contents; |
3452 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela); | |
0451c93c | 3453 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3454 | } |
3455 | ||
f5385ebf | 3456 | if (h->needs_copy) |
a85d7ed0 | 3457 | { |
a85d7ed0 | 3458 | Elf_Internal_Rela rela; |
5474d94f | 3459 | asection *s; |
947216bf | 3460 | bfd_byte *loc; |
a85d7ed0 NC |
3461 | |
3462 | /* This symbols needs a copy reloc. Set it up. */ | |
3463 | ||
0451c93c MS |
3464 | if (h->dynindx == -1 |
3465 | || (h->root.type != bfd_link_hash_defined | |
3466 | && h->root.type != bfd_link_hash_defweak) | |
9d19e4fd | 3467 | || htab->elf.srelbss == NULL) |
0451c93c | 3468 | abort (); |
a85d7ed0 NC |
3469 | |
3470 | rela.r_offset = (h->root.u.def.value | |
3471 | + h->root.u.def.section->output_section->vma | |
3472 | + h->root.u.def.section->output_offset); | |
3473 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY); | |
3474 | rela.r_addend = 0; | |
afbf7e8e | 3475 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
3476 | s = htab->elf.sreldynrelro; |
3477 | else | |
3478 | s = htab->elf.srelbss; | |
3479 | loc = s->contents + s->reloc_count++ * sizeof (Elf64_External_Rela); | |
0451c93c | 3480 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3481 | } |
3482 | ||
3483 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 3484 | if (h == htab->elf.hdynamic |
22edb2f1 RS |
3485 | || h == htab->elf.hgot |
3486 | || h == htab->elf.hplt) | |
a85d7ed0 NC |
3487 | sym->st_shndx = SHN_ABS; |
3488 | ||
b34976b6 | 3489 | return TRUE; |
a85d7ed0 NC |
3490 | } |
3491 | ||
0451c93c MS |
3492 | /* Used to decide how to sort relocs in an optimal manner for the |
3493 | dynamic linker, before writing them out. */ | |
3494 | ||
3495 | static enum elf_reloc_type_class | |
7e612e98 AM |
3496 | elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
3497 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
3498 | const Elf_Internal_Rela *rela) | |
0451c93c | 3499 | { |
0f042c67 AK |
3500 | bfd *abfd = info->output_bfd; |
3501 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3502 | struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info); | |
3503 | unsigned long r_symndx = ELF64_R_SYM (rela->r_info); | |
3504 | Elf_Internal_Sym sym; | |
3505 | ||
3506 | if (htab->elf.dynsym == NULL | |
3507 | || !bed->s->swap_symbol_in (abfd, | |
3508 | (htab->elf.dynsym->contents | |
3509 | + r_symndx * bed->s->sizeof_sym), | |
3510 | 0, &sym)) | |
3511 | abort (); | |
3512 | ||
3513 | /* Check relocation against STT_GNU_IFUNC symbol. */ | |
3514 | if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
3515 | return reloc_class_ifunc; | |
3516 | ||
0451c93c MS |
3517 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
3518 | { | |
3519 | case R_390_RELATIVE: | |
3520 | return reloc_class_relative; | |
3521 | case R_390_JMP_SLOT: | |
3522 | return reloc_class_plt; | |
3523 | case R_390_COPY: | |
3524 | return reloc_class_copy; | |
3525 | default: | |
3526 | return reloc_class_normal; | |
3527 | } | |
3528 | } | |
3529 | ||
a85d7ed0 NC |
3530 | /* Finish up the dynamic sections. */ |
3531 | ||
b34976b6 | 3532 | static bfd_boolean |
4dfe6ac6 NC |
3533 | elf_s390_finish_dynamic_sections (bfd *output_bfd, |
3534 | struct bfd_link_info *info) | |
a85d7ed0 | 3535 | { |
0451c93c | 3536 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
3537 | bfd *dynobj; |
3538 | asection *sdyn; | |
470b557a AK |
3539 | bfd *ibfd; |
3540 | unsigned int i; | |
a85d7ed0 | 3541 | |
0451c93c | 3542 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
3543 | if (htab == NULL) |
3544 | return FALSE; | |
3545 | ||
0451c93c | 3546 | dynobj = htab->elf.dynobj; |
3d4d4302 | 3547 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
a85d7ed0 | 3548 | |
0451c93c | 3549 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 | 3550 | { |
a85d7ed0 NC |
3551 | Elf64_External_Dyn *dyncon, *dynconend; |
3552 | ||
f41345a7 | 3553 | if (sdyn == NULL || htab->elf.sgot == NULL) |
0451c93c | 3554 | abort (); |
a85d7ed0 NC |
3555 | |
3556 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 3557 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
a85d7ed0 NC |
3558 | for (; dyncon < dynconend; dyncon++) |
3559 | { | |
3560 | Elf_Internal_Dyn dyn; | |
a85d7ed0 | 3561 | asection *s; |
ec338859 | 3562 | |
a85d7ed0 | 3563 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); |
ec338859 | 3564 | |
a85d7ed0 NC |
3565 | switch (dyn.d_tag) |
3566 | { | |
3567 | default: | |
0451c93c | 3568 | continue; |
ec338859 | 3569 | |
a85d7ed0 | 3570 | case DT_PLTGOT: |
4ade44b7 AM |
3571 | s = htab->elf.sgotplt; |
3572 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
0451c93c | 3573 | break; |
ec338859 | 3574 | |
a85d7ed0 | 3575 | case DT_JMPREL: |
4ade44b7 AM |
3576 | s = htab->elf.srelplt; |
3577 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
a85d7ed0 | 3578 | break; |
ec338859 | 3579 | |
a85d7ed0 | 3580 | case DT_PLTRELSZ: |
79c12fae AK |
3581 | dyn.d_un.d_val = htab->elf.srelplt->size; |
3582 | if (htab->elf.irelplt) | |
3583 | dyn.d_un.d_val += htab->elf.irelplt->size; | |
a85d7ed0 | 3584 | break; |
ec338859 | 3585 | |
a85d7ed0 NC |
3586 | case DT_RELASZ: |
3587 | /* The procedure linkage table relocs (DT_JMPREL) should | |
3588 | not be included in the overall relocs (DT_RELA). | |
3589 | Therefore, we override the DT_RELASZ entry here to | |
3590 | make it not include the JMPREL relocs. Since the | |
3591 | linker script arranges for .rela.plt to follow all | |
3592 | other relocation sections, we don't have to worry | |
3593 | about changing the DT_RELA entry. */ | |
79c12fae AK |
3594 | dyn.d_un.d_val -= htab->elf.srelplt->size; |
3595 | if (htab->elf.irelplt) | |
3596 | dyn.d_un.d_val -= htab->elf.irelplt->size; | |
a85d7ed0 NC |
3597 | break; |
3598 | } | |
0451c93c MS |
3599 | |
3600 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
a85d7ed0 NC |
3601 | } |
3602 | ||
3603 | /* Fill in the special first entry in the procedure linkage table. */ | |
f41345a7 | 3604 | if (htab->elf.splt && htab->elf.splt->size > 0) |
a85d7ed0 NC |
3605 | { |
3606 | /* fill in blueprint for plt 0 entry */ | |
f41345a7 | 3607 | memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry, |
9aa17453 | 3608 | PLT_FIRST_ENTRY_SIZE); |
a85d7ed0 NC |
3609 | /* Fixup relative address to start of GOT */ |
3610 | bfd_put_32 (output_bfd, | |
161db279 AK |
3611 | (htab->elf.sgotplt->output_section->vma |
3612 | + htab->elf.sgotplt->output_offset | |
3613 | - htab->elf.splt->output_section->vma | |
3614 | - htab->elf.splt->output_offset - 6)/2, | |
f41345a7 | 3615 | htab->elf.splt->contents + 8); |
a85d7ed0 | 3616 | } |
387f8054 MR |
3617 | if (elf_section_data (htab->elf.splt->output_section) != NULL) |
3618 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize | |
3619 | = PLT_ENTRY_SIZE; | |
a85d7ed0 NC |
3620 | } |
3621 | ||
f41345a7 | 3622 | if (htab->elf.sgotplt) |
a85d7ed0 | 3623 | { |
0451c93c | 3624 | /* Fill in the first three entries in the global offset table. */ |
f41345a7 | 3625 | if (htab->elf.sgotplt->size > 0) |
0451c93c MS |
3626 | { |
3627 | bfd_put_64 (output_bfd, | |
3628 | (sdyn == NULL ? (bfd_vma) 0 | |
3629 | : sdyn->output_section->vma + sdyn->output_offset), | |
f41345a7 | 3630 | htab->elf.sgotplt->contents); |
0451c93c | 3631 | /* One entry for shared object struct ptr. */ |
f41345a7 | 3632 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8); |
0451c93c | 3633 | /* One entry for _dl_runtime_resolve. */ |
3b67f094 | 3634 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 16); |
0451c93c | 3635 | } |
a85d7ed0 | 3636 | |
f41345a7 | 3637 | elf_section_data (htab->elf.sgot->output_section) |
0451c93c MS |
3638 | ->this_hdr.sh_entsize = 8; |
3639 | } | |
470b557a AK |
3640 | |
3641 | /* Finish dynamic symbol for local IFUNC symbols. */ | |
c72f2fb2 | 3642 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
470b557a AK |
3643 | { |
3644 | struct plt_entry *local_plt; | |
3645 | Elf_Internal_Sym *isym; | |
3646 | Elf_Internal_Shdr *symtab_hdr; | |
3647 | ||
3648 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
3649 | ||
1ef692ea AK |
3650 | if (!is_s390_elf (ibfd)) |
3651 | continue; | |
3652 | ||
470b557a AK |
3653 | local_plt = elf_s390_local_plt (ibfd); |
3654 | if (local_plt != NULL) | |
3655 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
3656 | { | |
3657 | if (local_plt[i].plt.offset != (bfd_vma) -1) | |
3658 | { | |
3659 | asection *sec = local_plt[i].sec; | |
3660 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i); | |
3661 | if (isym == NULL) | |
3662 | return FALSE; | |
3663 | ||
3664 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
3665 | elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab, | |
3666 | local_plt[i].plt.offset, | |
3667 | isym->st_value | |
3668 | + sec->output_section->vma | |
3669 | + sec->output_offset); | |
3670 | ||
3671 | } | |
3672 | } | |
3673 | } | |
3674 | ||
b34976b6 | 3675 | return TRUE; |
a85d7ed0 | 3676 | } |
e3e9290d AA |
3677 | \f |
3678 | /* Support for core dump NOTE sections. */ | |
a85d7ed0 | 3679 | |
e3e9290d AA |
3680 | static bfd_boolean |
3681 | elf_s390_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
3682 | { | |
3683 | int offset; | |
3684 | size_t size; | |
3685 | ||
3686 | switch (note->descsz) | |
3687 | { | |
3688 | default: | |
3689 | return FALSE; | |
3690 | ||
3691 | case 336: /* sizeof(struct elf_prstatus) on s390x */ | |
3692 | /* pr_cursig */ | |
3693 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
3694 | ||
3695 | /* pr_pid */ | |
3696 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); | |
3697 | ||
3698 | /* pr_reg */ | |
3699 | offset = 112; | |
3700 | size = 216; | |
3701 | break; | |
3702 | } | |
3703 | ||
3704 | /* Make a ".reg/999" section. */ | |
3705 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
3706 | size, note->descpos + offset); | |
3707 | } | |
3708 | ||
3709 | static bfd_boolean | |
3710 | elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
3711 | { | |
3712 | switch (note->descsz) | |
3713 | { | |
3714 | default: | |
3715 | return FALSE; | |
3716 | ||
3717 | case 136: /* sizeof(struct elf_prpsinfo) on s390x */ | |
3718 | elf_tdata (abfd)->core->pid | |
3719 | = bfd_get_32 (abfd, note->descdata + 24); | |
3720 | elf_tdata (abfd)->core->program | |
3721 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
3722 | elf_tdata (abfd)->core->command | |
3723 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
3724 | } | |
3725 | ||
3726 | /* Note that for some reason, a spurious space is tacked | |
3727 | onto the end of the args in some (at least one anyway) | |
3728 | implementations, so strip it off if it exists. */ | |
3729 | ||
3730 | { | |
3731 | char *command = elf_tdata (abfd)->core->command; | |
3732 | int n = strlen (command); | |
3733 | ||
3734 | if (0 < n && command[n - 1] == ' ') | |
3735 | command[n - 1] = '\0'; | |
3736 | } | |
3737 | ||
3738 | return TRUE; | |
3739 | } | |
3740 | ||
3741 | static char * | |
3742 | elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz, | |
3743 | int note_type, ...) | |
3744 | { | |
3745 | va_list ap; | |
3746 | ||
3747 | switch (note_type) | |
3748 | { | |
3749 | default: | |
3750 | return NULL; | |
3751 | ||
3752 | case NT_PRPSINFO: | |
3753 | { | |
602f1657 | 3754 | char data[136] ATTRIBUTE_NONSTRING = { 0 }; |
e3e9290d AA |
3755 | const char *fname, *psargs; |
3756 | ||
3757 | va_start (ap, note_type); | |
3758 | fname = va_arg (ap, const char *); | |
3759 | psargs = va_arg (ap, const char *); | |
3760 | va_end (ap); | |
3761 | ||
3762 | strncpy (data + 40, fname, 16); | |
3763 | strncpy (data + 56, psargs, 80); | |
3764 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, | |
3765 | &data, sizeof (data)); | |
3766 | } | |
3767 | ||
3768 | case NT_PRSTATUS: | |
3769 | { | |
3770 | char data[336] = { 0 }; | |
3771 | long pid; | |
3772 | int cursig; | |
3773 | const void *gregs; | |
3774 | ||
3775 | va_start (ap, note_type); | |
3776 | pid = va_arg (ap, long); | |
3777 | cursig = va_arg (ap, int); | |
3778 | gregs = va_arg (ap, const void *); | |
3779 | va_end (ap); | |
3780 | ||
3781 | bfd_put_16 (abfd, cursig, data + 12); | |
3782 | bfd_put_32 (abfd, pid, data + 32); | |
3783 | memcpy (data + 112, gregs, 216); | |
3784 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, | |
3785 | &data, sizeof (data)); | |
3786 | } | |
3787 | } | |
3788 | /* NOTREACHED */ | |
3789 | } | |
3790 | \f | |
4c45e5c9 JJ |
3791 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
3792 | or (bfd_vma) -1 if it should not be included. */ | |
3793 | ||
3794 | static bfd_vma | |
3795 | elf_s390_plt_sym_val (bfd_vma i, const asection *plt, | |
3796 | const arelent *rel ATTRIBUTE_UNUSED) | |
3797 | { | |
3798 | return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE; | |
3799 | } | |
3800 | ||
643f7afb AK |
3801 | /* Merge backend specific data from an object file to the output |
3802 | object file when linking. */ | |
3803 | ||
3804 | static bfd_boolean | |
50e03d47 | 3805 | elf64_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
643f7afb | 3806 | { |
50e03d47 | 3807 | if (!is_s390_elf (ibfd) || !is_s390_elf (info->output_bfd)) |
643f7afb AK |
3808 | return TRUE; |
3809 | ||
50e03d47 | 3810 | return elf_s390_merge_obj_attributes (ibfd, info); |
643f7afb AK |
3811 | } |
3812 | ||
b4cbbe8f AK |
3813 | /* We may add a PT_S390_PGSTE program header. */ |
3814 | ||
3815 | static int | |
3816 | elf_s390_additional_program_headers (bfd *abfd ATTRIBUTE_UNUSED, | |
3817 | struct bfd_link_info *info) | |
3818 | { | |
3819 | struct elf_s390_link_hash_table *htab; | |
3820 | ||
93ec5e23 AK |
3821 | if (info) |
3822 | { | |
3823 | htab = elf_s390_hash_table (info); | |
3824 | if (htab) | |
3825 | return htab->params->pgste; | |
3826 | } | |
3827 | return 0; | |
b4cbbe8f AK |
3828 | } |
3829 | ||
3830 | ||
3831 | /* Add the PT_S390_PGSTE program header. */ | |
3832 | ||
3833 | static bfd_boolean | |
93ec5e23 | 3834 | elf_s390_modify_segment_map (bfd *abfd, struct bfd_link_info *info) |
b4cbbe8f AK |
3835 | { |
3836 | struct elf_s390_link_hash_table *htab; | |
3837 | struct elf_segment_map *m, *pm = NULL; | |
3838 | ||
93ec5e23 AK |
3839 | if (!abfd || !info) |
3840 | return TRUE; | |
3841 | ||
b4cbbe8f | 3842 | htab = elf_s390_hash_table (info); |
93ec5e23 | 3843 | if (!htab || !htab->params->pgste) |
b4cbbe8f AK |
3844 | return TRUE; |
3845 | ||
3846 | /* If there is already a PT_S390_PGSTE header, avoid adding | |
3847 | another. */ | |
3848 | m = elf_seg_map (abfd); | |
3849 | while (m && m->p_type != PT_S390_PGSTE) | |
3850 | { | |
3851 | pm = m; | |
3852 | m = m->next; | |
3853 | } | |
3854 | ||
3855 | if (m) | |
3856 | return TRUE; | |
3857 | ||
3858 | m = (struct elf_segment_map *) | |
3859 | bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3860 | if (m == NULL) | |
3861 | return FALSE; | |
3862 | m->p_type = PT_S390_PGSTE; | |
3863 | m->count = 0; | |
3864 | m->next = NULL; | |
3865 | if (pm) | |
3866 | pm->next = m; | |
3867 | ||
3868 | return TRUE; | |
3869 | } | |
3870 | ||
3871 | bfd_boolean | |
3872 | bfd_elf_s390_set_options (struct bfd_link_info *info, | |
3873 | struct s390_elf_params *params) | |
3874 | { | |
3875 | struct elf_s390_link_hash_table *htab; | |
3876 | ||
93ec5e23 AK |
3877 | if (info) |
3878 | { | |
3879 | htab = elf_s390_hash_table (info); | |
3880 | if (htab) | |
3881 | htab->params = params; | |
3882 | } | |
b4cbbe8f AK |
3883 | |
3884 | return TRUE; | |
3885 | } | |
3886 | ||
3887 | ||
ae9a127f NC |
3888 | /* Why was the hash table entry size definition changed from |
3889 | ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and | |
3890 | this is the only reason for the s390_elf64_size_info structure. */ | |
a85d7ed0 NC |
3891 | |
3892 | const struct elf_size_info s390_elf64_size_info = | |
3893 | { | |
3894 | sizeof (Elf64_External_Ehdr), | |
3895 | sizeof (Elf64_External_Phdr), | |
3896 | sizeof (Elf64_External_Shdr), | |
3897 | sizeof (Elf64_External_Rel), | |
3898 | sizeof (Elf64_External_Rela), | |
3899 | sizeof (Elf64_External_Sym), | |
3900 | sizeof (Elf64_External_Dyn), | |
3901 | sizeof (Elf_External_Note), | |
ae9a127f NC |
3902 | 8, /* hash-table entry size. */ |
3903 | 1, /* internal relocations per external relocations. */ | |
3904 | 64, /* arch_size. */ | |
45d6a902 | 3905 | 3, /* log_file_align. */ |
a85d7ed0 NC |
3906 | ELFCLASS64, EV_CURRENT, |
3907 | bfd_elf64_write_out_phdrs, | |
3908 | bfd_elf64_write_shdrs_and_ehdr, | |
1489a3a0 | 3909 | bfd_elf64_checksum_contents, |
a85d7ed0 | 3910 | bfd_elf64_write_relocs, |
73ff0d56 | 3911 | bfd_elf64_swap_symbol_in, |
a85d7ed0 NC |
3912 | bfd_elf64_swap_symbol_out, |
3913 | bfd_elf64_slurp_reloc_table, | |
3914 | bfd_elf64_slurp_symbol_table, | |
3915 | bfd_elf64_swap_dyn_in, | |
3916 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
3917 | bfd_elf64_swap_reloc_in, |
3918 | bfd_elf64_swap_reloc_out, | |
3919 | bfd_elf64_swap_reloca_in, | |
3920 | bfd_elf64_swap_reloca_out | |
a85d7ed0 NC |
3921 | }; |
3922 | ||
6d00b590 | 3923 | #define TARGET_BIG_SYM s390_elf64_vec |
a85d7ed0 NC |
3924 | #define TARGET_BIG_NAME "elf64-s390" |
3925 | #define ELF_ARCH bfd_arch_s390 | |
ae95ffa6 | 3926 | #define ELF_TARGET_ID S390_ELF_DATA |
a85d7ed0 NC |
3927 | #define ELF_MACHINE_CODE EM_S390 |
3928 | #define ELF_MACHINE_ALT1 EM_S390_OLD | |
3929 | #define ELF_MAXPAGESIZE 0x1000 | |
3930 | ||
3931 | #define elf_backend_size_info s390_elf64_size_info | |
3932 | ||
3933 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 3934 | #define elf_backend_can_refcount 1 |
a85d7ed0 NC |
3935 | #define elf_backend_want_got_plt 1 |
3936 | #define elf_backend_plt_readonly 1 | |
3937 | #define elf_backend_want_plt_sym 0 | |
3938 | #define elf_backend_got_header_size 24 | |
5474d94f | 3939 | #define elf_backend_want_dynrelro 1 |
b491616a | 3940 | #define elf_backend_rela_normal 1 |
a85d7ed0 NC |
3941 | |
3942 | #define elf_info_to_howto elf_s390_info_to_howto | |
3943 | ||
a85d7ed0 NC |
3944 | #define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name |
3945 | #define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create | |
3946 | #define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup | |
07d6d2b8 | 3947 | #define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup |
643f7afb | 3948 | #define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data |
a85d7ed0 NC |
3949 | |
3950 | #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol | |
3951 | #define elf_backend_check_relocs elf_s390_check_relocs | |
0451c93c | 3952 | #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol |
9d19e4fd | 3953 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
a85d7ed0 NC |
3954 | #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections |
3955 | #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol | |
3956 | #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook | |
0451c93c | 3957 | #define elf_backend_reloc_type_class elf_s390_reloc_type_class |
a85d7ed0 NC |
3958 | #define elf_backend_relocate_section elf_s390_relocate_section |
3959 | #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections | |
74541ad4 | 3960 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
e3e9290d AA |
3961 | #define elf_backend_grok_prstatus elf_s390_grok_prstatus |
3962 | #define elf_backend_grok_psinfo elf_s390_grok_psinfo | |
3963 | #define elf_backend_write_core_note elf_s390_write_core_note | |
4c45e5c9 | 3964 | #define elf_backend_plt_sym_val elf_s390_plt_sym_val |
07d6d2b8 | 3965 | #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p |
b4cbbe8f AK |
3966 | #define elf_backend_additional_program_headers elf_s390_additional_program_headers |
3967 | #define elf_backend_modify_segment_map elf_s390_modify_segment_map | |
a85d7ed0 | 3968 | |
69fc87f1 MS |
3969 | #define bfd_elf64_mkobject elf_s390_mkobject |
3970 | #define elf_backend_object_p elf_s390_object_p | |
a85d7ed0 NC |
3971 | |
3972 | #include "elf64-target.h" |