Commit | Line | Data |
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a85d7ed0 | 1 | /* IBM S/390-specific support for 64-bit ELF |
4dfe6ac6 | 2 | Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, |
1d7e9d18 | 3 | 2010, 2011, 2012 Free Software Foundation, Inc. |
a85d7ed0 NC |
4 | Contributed Martin Schwidefsky (schwidefsky@de.ibm.com). |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 10 | the Free Software Foundation; either version 3 of the License, or |
a85d7ed0 NC |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
3e110533 | 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
53e09e0a | 21 | 02110-1301, USA. */ |
a85d7ed0 | 22 | |
a85d7ed0 | 23 | #include "sysdep.h" |
3db64b00 | 24 | #include "bfd.h" |
a85d7ed0 NC |
25 | #include "bfdlink.h" |
26 | #include "libbfd.h" | |
27 | #include "elf-bfd.h" | |
a85d7ed0 NC |
28 | #include "elf/s390.h" |
29 | ||
30 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value | |
31 | from smaller values. Start with zero, widen, *then* decrement. */ | |
32 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
33 | ||
2c3fc389 NC |
34 | static bfd_reloc_status_type |
35 | s390_tls_reloc (bfd *, arelent *, asymbol *, void *, | |
36 | asection *, bfd *, char **); | |
37 | static bfd_reloc_status_type | |
38 | s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *, | |
39 | asection *, bfd *, char **); | |
40 | ||
a85d7ed0 NC |
41 | /* The relocation "howto" table. */ |
42 | static reloc_howto_type elf_howto_table[] = | |
43 | { | |
44 | HOWTO (R_390_NONE, /* type */ | |
45 | 0, /* rightshift */ | |
46 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
47 | 0, /* bitsize */ | |
b34976b6 | 48 | FALSE, /* pc_relative */ |
a85d7ed0 NC |
49 | 0, /* bitpos */ |
50 | complain_overflow_dont, /* complain_on_overflow */ | |
51 | bfd_elf_generic_reloc, /* special_function */ | |
52 | "R_390_NONE", /* name */ | |
b34976b6 | 53 | FALSE, /* partial_inplace */ |
a85d7ed0 NC |
54 | 0, /* src_mask */ |
55 | 0, /* dst_mask */ | |
b34976b6 AM |
56 | FALSE), /* pcrel_offset */ |
57 | ||
5236c819 MS |
58 | HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, |
59 | bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE), | |
60 | HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
61 | bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE), | |
62 | HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
63 | bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE), | |
64 | HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
65 | bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE), | |
66 | HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
67 | bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE), | |
15f8604d | 68 | HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield, |
5236c819 MS |
69 | bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE), |
70 | HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
71 | bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE), | |
72 | HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
73 | bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE), | |
74 | HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
75 | bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE), | |
76 | HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
77 | bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE), | |
78 | HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
79 | bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE), | |
80 | HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, | |
81 | bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE), | |
82 | HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
83 | bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE), | |
84 | HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, | |
85 | bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE), | |
86 | HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
87 | bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE), | |
88 | HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
89 | bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE), | |
90 | HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
91 | bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE), | |
92 | HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
93 | bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE), | |
94 | HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
95 | bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE), | |
96 | HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
97 | bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE), | |
98 | HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
99 | bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE), | |
100 | HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
101 | bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE), | |
102 | HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, | |
103 | bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE), | |
104 | HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
105 | bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE), | |
106 | HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, | |
107 | bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE), | |
108 | HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
109 | bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE), | |
110 | HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
111 | bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE), | |
112 | HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
113 | bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE), | |
114 | HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
115 | bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE), | |
116 | HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
117 | bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE), | |
118 | HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
119 | bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE), | |
120 | HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
121 | bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE), | |
122 | HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
123 | bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE), | |
124 | HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
125 | bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE), | |
126 | HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
127 | bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE), | |
128 | HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
129 | bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE), | |
69fc87f1 MS |
130 | HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont, |
131 | s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE), | |
132 | HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
133 | s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE), | |
134 | HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
135 | s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE), | |
136 | EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */ | |
137 | HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
138 | bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE), | |
139 | HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
140 | bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE), | |
141 | EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */ | |
142 | HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
143 | bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE), | |
144 | EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */ | |
145 | HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
146 | bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE), | |
147 | EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */ | |
148 | HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
149 | bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE), | |
150 | HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
151 | bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE), | |
152 | EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */ | |
153 | HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
154 | bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE), | |
155 | EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */ | |
156 | HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
157 | bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE), | |
158 | HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
159 | bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE), | |
160 | HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
161 | bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE), | |
162 | HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
163 | bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE), | |
bd1ea41b MS |
164 | HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont, |
165 | s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE), | |
166 | HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont, | |
167 | s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE), | |
168 | HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont, | |
169 | s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE), | |
170 | HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont, | |
171 | s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE), | |
470b557a AK |
172 | HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
173 | bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE), | |
174 | ||
a85d7ed0 NC |
175 | }; |
176 | ||
177 | /* GNU extension to record C++ vtable hierarchy. */ | |
178 | static reloc_howto_type elf64_s390_vtinherit_howto = | |
b34976b6 | 179 | HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE); |
a85d7ed0 | 180 | static reloc_howto_type elf64_s390_vtentry_howto = |
b34976b6 | 181 | 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 |
182 | |
183 | static reloc_howto_type * | |
2c3fc389 NC |
184 | elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
185 | bfd_reloc_code_real_type code) | |
a85d7ed0 | 186 | { |
0451c93c MS |
187 | switch (code) |
188 | { | |
189 | case BFD_RELOC_NONE: | |
190 | return &elf_howto_table[(int) R_390_NONE]; | |
191 | case BFD_RELOC_8: | |
192 | return &elf_howto_table[(int) R_390_8]; | |
193 | case BFD_RELOC_390_12: | |
194 | return &elf_howto_table[(int) R_390_12]; | |
195 | case BFD_RELOC_16: | |
196 | return &elf_howto_table[(int) R_390_16]; | |
197 | case BFD_RELOC_32: | |
198 | return &elf_howto_table[(int) R_390_32]; | |
199 | case BFD_RELOC_CTOR: | |
200 | return &elf_howto_table[(int) R_390_32]; | |
201 | case BFD_RELOC_32_PCREL: | |
202 | return &elf_howto_table[(int) R_390_PC32]; | |
203 | case BFD_RELOC_390_GOT12: | |
204 | return &elf_howto_table[(int) R_390_GOT12]; | |
205 | case BFD_RELOC_32_GOT_PCREL: | |
206 | return &elf_howto_table[(int) R_390_GOT32]; | |
207 | case BFD_RELOC_390_PLT32: | |
208 | return &elf_howto_table[(int) R_390_PLT32]; | |
209 | case BFD_RELOC_390_COPY: | |
210 | return &elf_howto_table[(int) R_390_COPY]; | |
211 | case BFD_RELOC_390_GLOB_DAT: | |
212 | return &elf_howto_table[(int) R_390_GLOB_DAT]; | |
213 | case BFD_RELOC_390_JMP_SLOT: | |
214 | return &elf_howto_table[(int) R_390_JMP_SLOT]; | |
215 | case BFD_RELOC_390_RELATIVE: | |
216 | return &elf_howto_table[(int) R_390_RELATIVE]; | |
217 | case BFD_RELOC_32_GOTOFF: | |
5236c819 | 218 | return &elf_howto_table[(int) R_390_GOTOFF32]; |
0451c93c MS |
219 | case BFD_RELOC_390_GOTPC: |
220 | return &elf_howto_table[(int) R_390_GOTPC]; | |
221 | case BFD_RELOC_390_GOT16: | |
222 | return &elf_howto_table[(int) R_390_GOT16]; | |
223 | case BFD_RELOC_16_PCREL: | |
224 | return &elf_howto_table[(int) R_390_PC16]; | |
225 | case BFD_RELOC_390_PC16DBL: | |
226 | return &elf_howto_table[(int) R_390_PC16DBL]; | |
227 | case BFD_RELOC_390_PLT16DBL: | |
228 | return &elf_howto_table[(int) R_390_PLT16DBL]; | |
0451c93c MS |
229 | case BFD_RELOC_390_PC32DBL: |
230 | return &elf_howto_table[(int) R_390_PC32DBL]; | |
231 | case BFD_RELOC_390_PLT32DBL: | |
232 | return &elf_howto_table[(int) R_390_PLT32DBL]; | |
233 | case BFD_RELOC_390_GOTPCDBL: | |
234 | return &elf_howto_table[(int) R_390_GOTPCDBL]; | |
235 | case BFD_RELOC_64: | |
236 | return &elf_howto_table[(int) R_390_64]; | |
237 | case BFD_RELOC_64_PCREL: | |
238 | return &elf_howto_table[(int) R_390_PC64]; | |
239 | case BFD_RELOC_390_GOT64: | |
240 | return &elf_howto_table[(int) R_390_GOT64]; | |
241 | case BFD_RELOC_390_PLT64: | |
242 | return &elf_howto_table[(int) R_390_PLT64]; | |
243 | case BFD_RELOC_390_GOTENT: | |
244 | return &elf_howto_table[(int) R_390_GOTENT]; | |
5236c819 MS |
245 | case BFD_RELOC_16_GOTOFF: |
246 | return &elf_howto_table[(int) R_390_GOTOFF16]; | |
247 | case BFD_RELOC_390_GOTOFF64: | |
248 | return &elf_howto_table[(int) R_390_GOTOFF64]; | |
249 | case BFD_RELOC_390_GOTPLT12: | |
250 | return &elf_howto_table[(int) R_390_GOTPLT12]; | |
251 | case BFD_RELOC_390_GOTPLT16: | |
252 | return &elf_howto_table[(int) R_390_GOTPLT16]; | |
253 | case BFD_RELOC_390_GOTPLT32: | |
254 | return &elf_howto_table[(int) R_390_GOTPLT32]; | |
255 | case BFD_RELOC_390_GOTPLT64: | |
256 | return &elf_howto_table[(int) R_390_GOTPLT64]; | |
257 | case BFD_RELOC_390_GOTPLTENT: | |
258 | return &elf_howto_table[(int) R_390_GOTPLTENT]; | |
259 | case BFD_RELOC_390_PLTOFF16: | |
260 | return &elf_howto_table[(int) R_390_PLTOFF16]; | |
261 | case BFD_RELOC_390_PLTOFF32: | |
262 | return &elf_howto_table[(int) R_390_PLTOFF32]; | |
263 | case BFD_RELOC_390_PLTOFF64: | |
264 | return &elf_howto_table[(int) R_390_PLTOFF64]; | |
69fc87f1 MS |
265 | case BFD_RELOC_390_TLS_LOAD: |
266 | return &elf_howto_table[(int) R_390_TLS_LOAD]; | |
267 | case BFD_RELOC_390_TLS_GDCALL: | |
268 | return &elf_howto_table[(int) R_390_TLS_GDCALL]; | |
269 | case BFD_RELOC_390_TLS_LDCALL: | |
270 | return &elf_howto_table[(int) R_390_TLS_LDCALL]; | |
271 | case BFD_RELOC_390_TLS_GD64: | |
272 | return &elf_howto_table[(int) R_390_TLS_GD64]; | |
273 | case BFD_RELOC_390_TLS_GOTIE12: | |
274 | return &elf_howto_table[(int) R_390_TLS_GOTIE12]; | |
275 | case BFD_RELOC_390_TLS_GOTIE64: | |
276 | return &elf_howto_table[(int) R_390_TLS_GOTIE64]; | |
277 | case BFD_RELOC_390_TLS_LDM64: | |
278 | return &elf_howto_table[(int) R_390_TLS_LDM64]; | |
279 | case BFD_RELOC_390_TLS_IE64: | |
280 | return &elf_howto_table[(int) R_390_TLS_IE64]; | |
281 | case BFD_RELOC_390_TLS_IEENT: | |
282 | return &elf_howto_table[(int) R_390_TLS_IEENT]; | |
283 | case BFD_RELOC_390_TLS_LE64: | |
284 | return &elf_howto_table[(int) R_390_TLS_LE64]; | |
285 | case BFD_RELOC_390_TLS_LDO64: | |
286 | return &elf_howto_table[(int) R_390_TLS_LDO64]; | |
287 | case BFD_RELOC_390_TLS_DTPMOD: | |
288 | return &elf_howto_table[(int) R_390_TLS_DTPMOD]; | |
289 | case BFD_RELOC_390_TLS_DTPOFF: | |
290 | return &elf_howto_table[(int) R_390_TLS_DTPOFF]; | |
291 | case BFD_RELOC_390_TLS_TPOFF: | |
292 | return &elf_howto_table[(int) R_390_TLS_TPOFF]; | |
bd1ea41b MS |
293 | case BFD_RELOC_390_20: |
294 | return &elf_howto_table[(int) R_390_20]; | |
295 | case BFD_RELOC_390_GOT20: | |
296 | return &elf_howto_table[(int) R_390_GOT20]; | |
297 | case BFD_RELOC_390_GOTPLT20: | |
298 | return &elf_howto_table[(int) R_390_GOTPLT20]; | |
299 | case BFD_RELOC_390_TLS_GOTIE20: | |
300 | return &elf_howto_table[(int) R_390_TLS_GOTIE20]; | |
470b557a AK |
301 | case BFD_RELOC_390_IRELATIVE: |
302 | return &elf_howto_table[(int) R_390_IRELATIVE]; | |
5236c819 MS |
303 | case BFD_RELOC_VTABLE_INHERIT: |
304 | return &elf64_s390_vtinherit_howto; | |
305 | case BFD_RELOC_VTABLE_ENTRY: | |
306 | return &elf64_s390_vtentry_howto; | |
0451c93c MS |
307 | default: |
308 | break; | |
309 | } | |
a85d7ed0 NC |
310 | return 0; |
311 | } | |
312 | ||
157090f7 AM |
313 | static reloc_howto_type * |
314 | elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
315 | const char *r_name) | |
316 | { | |
317 | unsigned int i; | |
318 | ||
319 | for (i = 0; | |
320 | i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); | |
321 | i++) | |
322 | if (elf_howto_table[i].name != NULL | |
323 | && strcasecmp (elf_howto_table[i].name, r_name) == 0) | |
324 | return &elf_howto_table[i]; | |
325 | ||
326 | if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0) | |
327 | return &elf64_s390_vtinherit_howto; | |
328 | if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0) | |
329 | return &elf64_s390_vtentry_howto; | |
330 | ||
331 | return NULL; | |
332 | } | |
333 | ||
a85d7ed0 NC |
334 | /* We need to use ELF64_R_TYPE so we have our own copy of this function, |
335 | and elf64-s390.c has its own copy. */ | |
336 | ||
337 | static void | |
2c3fc389 NC |
338 | elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
339 | arelent *cache_ptr, | |
340 | Elf_Internal_Rela *dst) | |
a85d7ed0 | 341 | { |
d0fb9a8d JJ |
342 | unsigned int r_type = ELF64_R_TYPE(dst->r_info); |
343 | switch (r_type) | |
a85d7ed0 NC |
344 | { |
345 | case R_390_GNU_VTINHERIT: | |
346 | cache_ptr->howto = &elf64_s390_vtinherit_howto; | |
347 | break; | |
348 | ||
349 | case R_390_GNU_VTENTRY: | |
350 | cache_ptr->howto = &elf64_s390_vtentry_howto; | |
351 | break; | |
352 | ||
353 | default: | |
d0fb9a8d JJ |
354 | if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0])) |
355 | { | |
356 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
357 | abfd, (int) r_type); | |
358 | r_type = R_390_NONE; | |
359 | } | |
360 | cache_ptr->howto = &elf_howto_table[r_type]; | |
99c79b2e | 361 | } |
a85d7ed0 NC |
362 | } |
363 | ||
69fc87f1 MS |
364 | /* A relocation function which doesn't do anything. */ |
365 | static bfd_reloc_status_type | |
2c3fc389 NC |
366 | s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
367 | arelent *reloc_entry, | |
368 | asymbol *symbol ATTRIBUTE_UNUSED, | |
369 | void * data ATTRIBUTE_UNUSED, | |
370 | asection *input_section, | |
371 | bfd *output_bfd, | |
372 | char **error_message ATTRIBUTE_UNUSED) | |
69fc87f1 MS |
373 | { |
374 | if (output_bfd) | |
375 | reloc_entry->address += input_section->output_offset; | |
376 | return bfd_reloc_ok; | |
377 | } | |
378 | ||
bd1ea41b MS |
379 | /* Handle the large displacement relocs. */ |
380 | static bfd_reloc_status_type | |
2c3fc389 NC |
381 | s390_elf_ldisp_reloc (bfd *abfd, |
382 | arelent *reloc_entry, | |
383 | asymbol *symbol, | |
384 | void * data, | |
385 | asection *input_section, | |
386 | bfd *output_bfd, | |
387 | char **error_message ATTRIBUTE_UNUSED) | |
bd1ea41b MS |
388 | { |
389 | reloc_howto_type *howto = reloc_entry->howto; | |
390 | bfd_vma relocation; | |
391 | bfd_vma insn; | |
392 | ||
393 | if (output_bfd != (bfd *) NULL | |
394 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
395 | && (! howto->partial_inplace | |
396 | || reloc_entry->addend == 0)) | |
397 | { | |
398 | reloc_entry->address += input_section->output_offset; | |
399 | return bfd_reloc_ok; | |
400 | } | |
401 | if (output_bfd != NULL) | |
402 | return bfd_reloc_continue; | |
403 | ||
07515404 | 404 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
bd1ea41b MS |
405 | return bfd_reloc_outofrange; |
406 | ||
407 | relocation = (symbol->value | |
408 | + symbol->section->output_section->vma | |
409 | + symbol->section->output_offset); | |
410 | relocation += reloc_entry->addend; | |
411 | if (howto->pc_relative) | |
412 | { | |
413 | relocation -= (input_section->output_section->vma | |
414 | + input_section->output_offset); | |
415 | relocation -= reloc_entry->address; | |
416 | } | |
417 | ||
418 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
419 | insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4; | |
420 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
421 | ||
422 | if ((bfd_signed_vma) relocation < - 0x80000 | |
423 | || (bfd_signed_vma) relocation > 0x7ffff) | |
424 | return bfd_reloc_overflow; | |
425 | else | |
426 | return bfd_reloc_ok; | |
427 | } | |
428 | ||
b34976b6 | 429 | static bfd_boolean |
2c3fc389 | 430 | elf_s390_is_local_label_name (bfd *abfd, const char *name) |
a85d7ed0 NC |
431 | { |
432 | if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L')) | |
b34976b6 | 433 | return TRUE; |
a85d7ed0 NC |
434 | |
435 | return _bfd_elf_is_local_label_name (abfd, name); | |
436 | } | |
437 | ||
438 | /* Functions for the 390 ELF linker. */ | |
439 | ||
440 | /* The name of the dynamic interpreter. This is put in the .interp | |
441 | section. */ | |
442 | ||
87049b0d | 443 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1" |
a85d7ed0 | 444 | |
64285810 MS |
445 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
446 | copying dynamic variables from a shared lib into an app's dynbss | |
447 | section, and instead use a dynamic relocation to point into the | |
448 | shared lib. */ | |
449 | #define ELIMINATE_COPY_RELOCS 1 | |
450 | ||
a85d7ed0 NC |
451 | /* The size in bytes of the first entry in the procedure linkage table. */ |
452 | #define PLT_FIRST_ENTRY_SIZE 32 | |
453 | /* The size in bytes of an entry in the procedure linkage table. */ | |
99c79b2e | 454 | #define PLT_ENTRY_SIZE 32 |
a85d7ed0 NC |
455 | |
456 | #define GOT_ENTRY_SIZE 8 | |
457 | ||
470b557a AK |
458 | #define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela) |
459 | ||
a85d7ed0 NC |
460 | /* The first three entries in a procedure linkage table are reserved, |
461 | and the initial contents are unimportant (we zero them out). | |
462 | Subsequent entries look like this. See the SVR4 ABI 386 | |
463 | supplement to see how this works. */ | |
464 | ||
465 | /* For the s390, simple addr offset can only be 0 - 4096. | |
466 | To use the full 16777216 TB address space, several instructions | |
467 | are needed to load an address in a register and execute | |
468 | a branch( or just saving the address) | |
469 | ||
99c79b2e | 470 | Furthermore, only r 0 and 1 are free to use!!! */ |
a85d7ed0 NC |
471 | |
472 | /* The first 3 words in the GOT are then reserved. | |
473 | Word 0 is the address of the dynamic table. | |
474 | Word 1 is a pointer to a structure describing the object | |
475 | Word 2 is used to point to the loader entry address. | |
476 | ||
477 | The code for PLT entries looks like this: | |
478 | ||
479 | The GOT holds the address in the PLT to be executed. | |
480 | The loader then gets: | |
481 | 24(15) = Pointer to the structure describing the object. | |
99c79b2e | 482 | 28(15) = Offset in symbol table |
a85d7ed0 NC |
483 | The loader must then find the module where the function is |
484 | and insert the address in the GOT. | |
485 | ||
486 | PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1 | |
487 | LG 1,0(1) # 6 bytes Load address from GOT in r1 | |
488 | BCR 15,1 # 2 bytes Jump to address | |
489 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
490 | LGF 1,12(1) # 6 bytes Load offset in symbl table in r1 | |
491 | BRCL 15,-x # 6 bytes Jump to start of PLT | |
a7e28bbe | 492 | .long ? # 4 bytes offset into .rela.plt |
a85d7ed0 NC |
493 | |
494 | Total = 32 bytes per PLT entry | |
495 | Fixup at offset 2: relative address to GOT entry | |
496 | Fixup at offset 22: relative branch to PLT0 | |
a7e28bbe | 497 | Fixup at offset 28: 32 bit offset into .rela.plt |
a85d7ed0 | 498 | |
a7e28bbe AK |
499 | A 32 bit offset into the symbol table is enough. It allows for |
500 | .rela.plt sections up to a size of 2 gigabyte. A single dynamic | |
501 | object (the main program, any shared library) is limited to 4GB in | |
502 | size. Having a .rela.plt of 2GB would already make the .plt | |
503 | section bigger than 8GB. */ | |
a85d7ed0 | 504 | |
9aa17453 AK |
505 | static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] = |
506 | { | |
507 | 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */ | |
508 | 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */ | |
509 | 0x07, 0xf1, /* br %r1 */ | |
510 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
511 | 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */ | |
512 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */ | |
513 | 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */ | |
514 | }; | |
a85d7ed0 NC |
515 | |
516 | /* The first PLT entry pushes the offset into the symbol table | |
a7e28bbe AK |
517 | from R1 onto the stack at 56(15) and the loader object info |
518 | at 48(15), loads the loader address in R1 and jumps to it. */ | |
a85d7ed0 NC |
519 | |
520 | /* The first entry in the PLT: | |
521 | ||
522 | PLT0: | |
523 | STG 1,56(15) # r1 contains the offset into the symbol table | |
524 | LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table | |
525 | MVC 48(8,15),8(1) # move loader ino (object struct address) to stack | |
526 | LG 1,16(1) # get entry address of loader | |
527 | BCR 15,1 # jump to loader | |
528 | ||
529 | Fixup at offset 8: relative address to start of GOT. */ | |
530 | ||
9aa17453 AK |
531 | static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] = |
532 | { | |
533 | 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */ | |
534 | 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */ | |
535 | 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */ | |
536 | 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */ | |
537 | 0x07, 0xf1, /* br %r1 */ | |
538 | 0x07, 0x00, /* nopr %r0 */ | |
539 | 0x07, 0x00, /* nopr %r0 */ | |
540 | 0x07, 0x00 /* nopr %r0 */ | |
541 | }; | |
a85d7ed0 | 542 | |
a85d7ed0 NC |
543 | |
544 | /* s390 ELF linker hash entry. */ | |
545 | ||
546 | struct elf_s390_link_hash_entry | |
547 | { | |
0451c93c | 548 | struct elf_link_hash_entry elf; |
a85d7ed0 | 549 | |
0451c93c | 550 | /* Track dynamic relocs copied for this symbol. */ |
00d8c7a9 | 551 | struct elf_dyn_relocs *dyn_relocs; |
5236c819 MS |
552 | |
553 | /* Number of GOTPLT references for a function. */ | |
554 | bfd_signed_vma gotplt_refcount; | |
69fc87f1 MS |
555 | |
556 | #define GOT_UNKNOWN 0 | |
557 | #define GOT_NORMAL 1 | |
558 | #define GOT_TLS_GD 2 | |
559 | #define GOT_TLS_IE 3 | |
560 | #define GOT_TLS_IE_NLT 3 | |
561 | unsigned char tls_type; | |
470b557a AK |
562 | |
563 | /* For pointer equality reasons we might need to change the symbol | |
564 | type from STT_GNU_IFUNC to STT_FUNC together with its value and | |
565 | section entry. So after alloc_dynrelocs only these values should | |
566 | be used. In order to check whether a symbol is IFUNC use | |
567 | s390_is_ifunc_symbol_p. */ | |
568 | bfd_vma ifunc_resolver_address; | |
569 | asection *ifunc_resolver_section; | |
a85d7ed0 NC |
570 | }; |
571 | ||
69fc87f1 MS |
572 | #define elf_s390_hash_entry(ent) \ |
573 | ((struct elf_s390_link_hash_entry *)(ent)) | |
574 | ||
470b557a AK |
575 | /* This structure represents an entry in the local PLT list needed for |
576 | local IFUNC symbols. */ | |
577 | struct plt_entry | |
578 | { | |
579 | /* The section of the local symbol. | |
580 | Set in relocate_section and used in finish_dynamic_sections. */ | |
581 | asection *sec; | |
582 | ||
583 | union | |
584 | { | |
585 | bfd_signed_vma refcount; | |
586 | bfd_vma offset; | |
587 | } plt; | |
588 | }; | |
589 | ||
0ffa91dd NC |
590 | /* NOTE: Keep this structure in sync with |
591 | the one declared in elf32-s390.c. */ | |
69fc87f1 MS |
592 | struct elf_s390_obj_tdata |
593 | { | |
594 | struct elf_obj_tdata root; | |
595 | ||
470b557a AK |
596 | /* A local PLT is needed for ifunc symbols. */ |
597 | struct plt_entry *local_plt; | |
598 | ||
0ffa91dd | 599 | /* TLS type for each local got entry. */ |
69fc87f1 MS |
600 | char *local_got_tls_type; |
601 | }; | |
602 | ||
603 | #define elf_s390_tdata(abfd) \ | |
604 | ((struct elf_s390_obj_tdata *) (abfd)->tdata.any) | |
605 | ||
470b557a AK |
606 | #define elf_s390_local_plt(abfd) \ |
607 | (elf_s390_tdata (abfd)->local_plt) | |
608 | ||
69fc87f1 MS |
609 | #define elf_s390_local_got_tls_type(abfd) \ |
610 | (elf_s390_tdata (abfd)->local_got_tls_type) | |
611 | ||
0ffa91dd NC |
612 | #define is_s390_elf(bfd) \ |
613 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
614 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 615 | && elf_object_id (bfd) == S390_ELF_DATA) |
0ffa91dd | 616 | |
69fc87f1 | 617 | static bfd_boolean |
62d7a5f6 | 618 | elf_s390_mkobject (bfd *abfd) |
69fc87f1 | 619 | { |
0ffa91dd | 620 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata), |
4dfe6ac6 | 621 | S390_ELF_DATA); |
69fc87f1 MS |
622 | } |
623 | ||
624 | static bfd_boolean | |
2c3fc389 | 625 | elf_s390_object_p (bfd *abfd) |
69fc87f1 | 626 | { |
69fc87f1 MS |
627 | /* Set the right machine number for an s390 elf32 file. */ |
628 | return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64); | |
629 | } | |
630 | ||
a85d7ed0 NC |
631 | /* s390 ELF linker hash table. */ |
632 | ||
633 | struct elf_s390_link_hash_table | |
634 | { | |
0451c93c | 635 | struct elf_link_hash_table elf; |
a85d7ed0 | 636 | |
0451c93c | 637 | /* Short-cuts to get to dynamic linker sections. */ |
0451c93c MS |
638 | asection *sdynbss; |
639 | asection *srelbss; | |
470b557a | 640 | asection *irelifunc; |
ec338859 | 641 | |
69fc87f1 MS |
642 | union { |
643 | bfd_signed_vma refcount; | |
644 | bfd_vma offset; | |
645 | } tls_ldm_got; | |
646 | ||
87d72d41 AM |
647 | /* Small local sym cache. */ |
648 | struct sym_cache sym_cache; | |
0451c93c | 649 | }; |
a85d7ed0 NC |
650 | |
651 | /* Get the s390 ELF linker hash table from a link_info structure. */ | |
652 | ||
653 | #define elf_s390_hash_table(p) \ | |
4dfe6ac6 NC |
654 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
655 | == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL) | |
a85d7ed0 | 656 | |
470b557a AK |
657 | #define ELF64 1 |
658 | #include "elf-s390-common.c" | |
659 | ||
a85d7ed0 NC |
660 | /* Create an entry in an s390 ELF linker hash table. */ |
661 | ||
662 | static struct bfd_hash_entry * | |
2c3fc389 NC |
663 | link_hash_newfunc (struct bfd_hash_entry *entry, |
664 | struct bfd_hash_table *table, | |
665 | const char *string) | |
a85d7ed0 | 666 | { |
a85d7ed0 NC |
667 | /* Allocate the structure if it has not already been allocated by a |
668 | subclass. */ | |
0451c93c MS |
669 | if (entry == NULL) |
670 | { | |
671 | entry = bfd_hash_allocate (table, | |
672 | sizeof (struct elf_s390_link_hash_entry)); | |
673 | if (entry == NULL) | |
674 | return entry; | |
675 | } | |
a85d7ed0 NC |
676 | |
677 | /* Call the allocation method of the superclass. */ | |
0451c93c MS |
678 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
679 | if (entry != NULL) | |
a85d7ed0 | 680 | { |
0451c93c MS |
681 | struct elf_s390_link_hash_entry *eh; |
682 | ||
683 | eh = (struct elf_s390_link_hash_entry *) entry; | |
684 | eh->dyn_relocs = NULL; | |
5236c819 | 685 | eh->gotplt_refcount = 0; |
69fc87f1 | 686 | eh->tls_type = GOT_UNKNOWN; |
470b557a AK |
687 | eh->ifunc_resolver_address = 0; |
688 | eh->ifunc_resolver_section = NULL; | |
a85d7ed0 NC |
689 | } |
690 | ||
0451c93c | 691 | return entry; |
a85d7ed0 NC |
692 | } |
693 | ||
694 | /* Create an s390 ELF linker hash table. */ | |
695 | ||
696 | static struct bfd_link_hash_table * | |
2c3fc389 | 697 | elf_s390_link_hash_table_create (bfd *abfd) |
a85d7ed0 NC |
698 | { |
699 | struct elf_s390_link_hash_table *ret; | |
dc810e39 | 700 | bfd_size_type amt = sizeof (struct elf_s390_link_hash_table); |
a85d7ed0 | 701 | |
e2d34d7d | 702 | ret = (struct elf_s390_link_hash_table *) bfd_malloc (amt); |
0451c93c | 703 | if (ret == NULL) |
a85d7ed0 NC |
704 | return NULL; |
705 | ||
66eb6687 | 706 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
707 | sizeof (struct elf_s390_link_hash_entry), |
708 | S390_ELF_DATA)) | |
a85d7ed0 | 709 | { |
e2d34d7d | 710 | free (ret); |
a85d7ed0 NC |
711 | return NULL; |
712 | } | |
713 | ||
f41345a7 AK |
714 | ret->elf.sgot = NULL; |
715 | ret->elf.sgotplt = NULL; | |
716 | ret->elf.srelgot = NULL; | |
717 | ret->elf.splt = NULL; | |
718 | ret->elf.srelplt = NULL; | |
0451c93c MS |
719 | ret->sdynbss = NULL; |
720 | ret->srelbss = NULL; | |
69fc87f1 | 721 | ret->tls_ldm_got.refcount = 0; |
87d72d41 | 722 | ret->sym_cache.abfd = NULL; |
0451c93c MS |
723 | |
724 | return &ret->elf.root; | |
725 | } | |
726 | ||
727 | /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up | |
728 | shortcuts to them in our hash table. */ | |
729 | ||
b34976b6 | 730 | static bfd_boolean |
4dfe6ac6 NC |
731 | create_got_section (bfd *dynobj, |
732 | struct bfd_link_info *info) | |
0451c93c MS |
733 | { |
734 | struct elf_s390_link_hash_table *htab; | |
735 | ||
736 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 737 | return FALSE; |
0451c93c MS |
738 | |
739 | htab = elf_s390_hash_table (info); | |
4dfe6ac6 NC |
740 | if (htab == NULL) |
741 | return FALSE; | |
742 | ||
3d4d4302 AM |
743 | htab->elf.sgot = bfd_get_linker_section (dynobj, ".got"); |
744 | htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt"); | |
745 | htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got"); | |
f41345a7 | 746 | if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot) |
0451c93c | 747 | abort (); |
b34976b6 | 748 | return TRUE; |
0451c93c MS |
749 | } |
750 | ||
751 | /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and | |
752 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our | |
753 | hash table. */ | |
754 | ||
b34976b6 | 755 | static bfd_boolean |
4dfe6ac6 NC |
756 | elf_s390_create_dynamic_sections (bfd *dynobj, |
757 | struct bfd_link_info *info) | |
0451c93c MS |
758 | { |
759 | struct elf_s390_link_hash_table *htab; | |
760 | ||
761 | htab = elf_s390_hash_table (info); | |
4dfe6ac6 NC |
762 | if (htab == NULL) |
763 | return FALSE; | |
764 | ||
f41345a7 | 765 | if (!htab->elf.sgot && !create_got_section (dynobj, info)) |
b34976b6 | 766 | return FALSE; |
0451c93c MS |
767 | |
768 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
b34976b6 | 769 | return FALSE; |
0451c93c | 770 | |
3d4d4302 AM |
771 | htab->elf.splt = bfd_get_linker_section (dynobj, ".plt"); |
772 | htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt"); | |
773 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); | |
0451c93c | 774 | if (!info->shared) |
3d4d4302 | 775 | htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
0451c93c | 776 | |
f41345a7 | 777 | if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss |
0451c93c MS |
778 | || (!info->shared && !htab->srelbss)) |
779 | abort (); | |
780 | ||
b34976b6 | 781 | return TRUE; |
a85d7ed0 NC |
782 | } |
783 | ||
0451c93c MS |
784 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
785 | ||
786 | static void | |
2c3fc389 NC |
787 | elf_s390_copy_indirect_symbol (struct bfd_link_info *info, |
788 | struct elf_link_hash_entry *dir, | |
789 | struct elf_link_hash_entry *ind) | |
0451c93c MS |
790 | { |
791 | struct elf_s390_link_hash_entry *edir, *eind; | |
792 | ||
793 | edir = (struct elf_s390_link_hash_entry *) dir; | |
794 | eind = (struct elf_s390_link_hash_entry *) ind; | |
795 | ||
796 | if (eind->dyn_relocs != NULL) | |
797 | { | |
798 | if (edir->dyn_relocs != NULL) | |
799 | { | |
00d8c7a9 AK |
800 | struct elf_dyn_relocs **pp; |
801 | struct elf_dyn_relocs *p; | |
0451c93c | 802 | |
fcfa13d2 | 803 | /* Add reloc counts against the indirect sym to the direct sym |
0451c93c MS |
804 | list. Merge any entries against the same section. */ |
805 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
806 | { | |
00d8c7a9 | 807 | struct elf_dyn_relocs *q; |
0451c93c MS |
808 | |
809 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
810 | if (q->sec == p->sec) | |
811 | { | |
812 | q->pc_count += p->pc_count; | |
813 | q->count += p->count; | |
814 | *pp = p->next; | |
815 | break; | |
816 | } | |
817 | if (q == NULL) | |
818 | pp = &p->next; | |
819 | } | |
820 | *pp = edir->dyn_relocs; | |
821 | } | |
822 | ||
823 | edir->dyn_relocs = eind->dyn_relocs; | |
824 | eind->dyn_relocs = NULL; | |
825 | } | |
826 | ||
69fc87f1 MS |
827 | if (ind->root.type == bfd_link_hash_indirect |
828 | && dir->got.refcount <= 0) | |
829 | { | |
830 | edir->tls_type = eind->tls_type; | |
831 | eind->tls_type = GOT_UNKNOWN; | |
832 | } | |
833 | ||
64285810 MS |
834 | if (ELIMINATE_COPY_RELOCS |
835 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
836 | && dir->dynamic_adjusted) |
837 | { | |
838 | /* If called to transfer flags for a weakdef during processing | |
839 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
840 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
841 | dir->ref_dynamic |= ind->ref_dynamic; | |
842 | dir->ref_regular |= ind->ref_regular; | |
843 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
844 | dir->needs_plt |= ind->needs_plt; | |
845 | } | |
64285810 | 846 | else |
fcfa13d2 | 847 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
0451c93c | 848 | } |
a85d7ed0 | 849 | |
69fc87f1 | 850 | static int |
2c3fc389 NC |
851 | elf_s390_tls_transition (struct bfd_link_info *info, |
852 | int r_type, | |
853 | int is_local) | |
69fc87f1 MS |
854 | { |
855 | if (info->shared) | |
856 | return r_type; | |
857 | ||
858 | switch (r_type) | |
859 | { | |
860 | case R_390_TLS_GD64: | |
861 | case R_390_TLS_IE64: | |
862 | if (is_local) | |
863 | return R_390_TLS_LE64; | |
864 | return R_390_TLS_IE64; | |
865 | case R_390_TLS_GOTIE64: | |
866 | if (is_local) | |
867 | return R_390_TLS_LE64; | |
868 | return R_390_TLS_GOTIE64; | |
869 | case R_390_TLS_LDM64: | |
870 | return R_390_TLS_LE64; | |
871 | } | |
872 | ||
873 | return r_type; | |
874 | } | |
875 | ||
a85d7ed0 NC |
876 | /* Look through the relocs for a section during the first phase, and |
877 | allocate space in the global offset table or procedure linkage | |
878 | table. */ | |
879 | ||
b34976b6 | 880 | static bfd_boolean |
4dfe6ac6 NC |
881 | elf_s390_check_relocs (bfd *abfd, |
882 | struct bfd_link_info *info, | |
883 | asection *sec, | |
884 | const Elf_Internal_Rela *relocs) | |
a85d7ed0 | 885 | { |
0451c93c | 886 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
887 | Elf_Internal_Shdr *symtab_hdr; |
888 | struct elf_link_hash_entry **sym_hashes; | |
a85d7ed0 NC |
889 | const Elf_Internal_Rela *rel; |
890 | const Elf_Internal_Rela *rel_end; | |
a85d7ed0 | 891 | asection *sreloc; |
5236c819 | 892 | bfd_signed_vma *local_got_refcounts; |
69fc87f1 | 893 | int tls_type, old_tls_type; |
a85d7ed0 | 894 | |
1049f94e | 895 | if (info->relocatable) |
b34976b6 | 896 | return TRUE; |
a85d7ed0 | 897 | |
0ffa91dd NC |
898 | BFD_ASSERT (is_s390_elf (abfd)); |
899 | ||
0451c93c | 900 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
901 | if (htab == NULL) |
902 | return FALSE; | |
903 | ||
0ffa91dd | 904 | symtab_hdr = &elf_symtab_hdr (abfd); |
a85d7ed0 | 905 | sym_hashes = elf_sym_hashes (abfd); |
5236c819 | 906 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 907 | |
a85d7ed0 NC |
908 | sreloc = NULL; |
909 | ||
910 | rel_end = relocs + sec->reloc_count; | |
911 | for (rel = relocs; rel < rel_end; rel++) | |
912 | { | |
69fc87f1 | 913 | unsigned int r_type; |
a85d7ed0 NC |
914 | unsigned long r_symndx; |
915 | struct elf_link_hash_entry *h; | |
470b557a | 916 | Elf_Internal_Sym *isym; |
a85d7ed0 NC |
917 | |
918 | r_symndx = ELF64_R_SYM (rel->r_info); | |
919 | ||
0451c93c MS |
920 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
921 | { | |
d003868e AM |
922 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
923 | abfd, | |
0451c93c | 924 | r_symndx); |
b34976b6 | 925 | return FALSE; |
0451c93c MS |
926 | } |
927 | ||
a85d7ed0 | 928 | if (r_symndx < symtab_hdr->sh_info) |
470b557a AK |
929 | { |
930 | /* A local symbol. */ | |
931 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
932 | abfd, r_symndx); | |
933 | if (isym == NULL) | |
934 | return FALSE; | |
935 | ||
936 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
937 | { | |
938 | struct plt_entry *plt; | |
939 | ||
940 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
941 | return FALSE; | |
942 | ||
943 | if (local_got_refcounts == NULL) | |
944 | { | |
945 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) | |
946 | return FALSE; | |
947 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
948 | } | |
949 | plt = elf_s390_local_plt (abfd); | |
950 | plt[r_symndx].plt.refcount++; | |
951 | } | |
952 | h = NULL; | |
953 | } | |
a85d7ed0 | 954 | else |
973a3492 L |
955 | { |
956 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
957 | while (h->root.type == bfd_link_hash_indirect | |
958 | || h->root.type == bfd_link_hash_warning) | |
959 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
960 | } | |
a85d7ed0 | 961 | |
5236c819 MS |
962 | /* Create got section and local_got_refcounts array if they |
963 | are needed. */ | |
69fc87f1 MS |
964 | r_type = elf_s390_tls_transition (info, |
965 | ELF64_R_TYPE (rel->r_info), | |
966 | h == NULL); | |
967 | switch (r_type) | |
a85d7ed0 NC |
968 | { |
969 | case R_390_GOT12: | |
947216bf | 970 | case R_390_GOT16: |
bd1ea41b | 971 | case R_390_GOT20: |
a85d7ed0 NC |
972 | case R_390_GOT32: |
973 | case R_390_GOT64: | |
974 | case R_390_GOTENT: | |
5236c819 MS |
975 | case R_390_GOTPLT12: |
976 | case R_390_GOTPLT16: | |
bd1ea41b | 977 | case R_390_GOTPLT20: |
5236c819 MS |
978 | case R_390_GOTPLT32: |
979 | case R_390_GOTPLT64: | |
980 | case R_390_GOTPLTENT: | |
69fc87f1 MS |
981 | case R_390_TLS_GD64: |
982 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 983 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
984 | case R_390_TLS_GOTIE64: |
985 | case R_390_TLS_IEENT: | |
986 | case R_390_TLS_IE64: | |
987 | case R_390_TLS_LDM64: | |
5236c819 MS |
988 | if (h == NULL |
989 | && local_got_refcounts == NULL) | |
a85d7ed0 | 990 | { |
470b557a | 991 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) |
5236c819 | 992 | return FALSE; |
470b557a | 993 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 994 | } |
470b557a | 995 | |
5236c819 MS |
996 | /* Fall through. */ |
997 | case R_390_GOTOFF16: | |
998 | case R_390_GOTOFF32: | |
999 | case R_390_GOTOFF64: | |
0451c93c MS |
1000 | case R_390_GOTPC: |
1001 | case R_390_GOTPCDBL: | |
f41345a7 | 1002 | if (htab->elf.sgot == NULL) |
0451c93c MS |
1003 | { |
1004 | if (htab->elf.dynobj == NULL) | |
1005 | htab->elf.dynobj = abfd; | |
1006 | if (!create_got_section (htab->elf.dynobj, info)) | |
b34976b6 | 1007 | return FALSE; |
0451c93c | 1008 | } |
5236c819 MS |
1009 | } |
1010 | ||
470b557a AK |
1011 | if (h != NULL) |
1012 | { | |
1013 | if (htab->elf.dynobj == NULL) | |
1014 | htab->elf.dynobj = abfd; | |
1015 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
1016 | return FALSE; | |
1017 | ||
1018 | /* Make sure an IFUNC symbol defined in a non-shared object | |
1019 | always gets a PLT slot. */ | |
1020 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
1021 | { | |
1022 | /* The symbol is called by the dynamic loader in order | |
1023 | to resolve the relocation. So it is in fact also | |
1024 | referenced. */ | |
1025 | h->ref_regular = 1; | |
1026 | h->needs_plt = 1; | |
1027 | } | |
1028 | } | |
1029 | ||
69fc87f1 | 1030 | switch (r_type) |
5236c819 | 1031 | { |
5236c819 MS |
1032 | case R_390_GOTOFF16: |
1033 | case R_390_GOTOFF32: | |
1034 | case R_390_GOTOFF64: | |
1035 | case R_390_GOTPC: | |
1036 | case R_390_GOTPCDBL: | |
470b557a AK |
1037 | /* These relocs do not need a GOT slot. They just load the |
1038 | GOT pointer itself or address something else relative to | |
1039 | the GOT. Since the GOT pointer has been set up above we | |
1040 | are done. */ | |
0451c93c | 1041 | break; |
ec338859 | 1042 | |
947216bf | 1043 | case R_390_PLT16DBL: |
a85d7ed0 NC |
1044 | case R_390_PLT32: |
1045 | case R_390_PLT32DBL: | |
1046 | case R_390_PLT64: | |
5236c819 MS |
1047 | case R_390_PLTOFF16: |
1048 | case R_390_PLTOFF32: | |
1049 | case R_390_PLTOFF64: | |
a85d7ed0 | 1050 | /* This symbol requires a procedure linkage table entry. We |
947216bf AM |
1051 | actually build the entry in adjust_dynamic_symbol, |
1052 | because this might be a case of linking PIC code which is | |
1053 | never referenced by a dynamic object, in which case we | |
1054 | don't need to generate a procedure linkage table entry | |
1055 | after all. */ | |
ec338859 | 1056 | |
a85d7ed0 | 1057 | /* If this is a local symbol, we resolve it directly without |
947216bf | 1058 | creating a procedure linkage table entry. */ |
5236c819 MS |
1059 | if (h != NULL) |
1060 | { | |
f5385ebf | 1061 | h->needs_plt = 1; |
5236c819 MS |
1062 | h->plt.refcount += 1; |
1063 | } | |
1064 | break; | |
ec338859 | 1065 | |
5236c819 MS |
1066 | case R_390_GOTPLT12: |
1067 | case R_390_GOTPLT16: | |
bd1ea41b | 1068 | case R_390_GOTPLT20: |
5236c819 MS |
1069 | case R_390_GOTPLT32: |
1070 | case R_390_GOTPLT64: | |
1071 | case R_390_GOTPLTENT: | |
1072 | /* This symbol requires either a procedure linkage table entry | |
1073 | or an entry in the local got. We actually build the entry | |
1074 | in adjust_dynamic_symbol because whether this is really a | |
1075 | global reference can change and with it the fact if we have | |
1076 | to create a plt entry or a local got entry. To be able to | |
1077 | make a once global symbol a local one we have to keep track | |
1078 | of the number of gotplt references that exist for this | |
1079 | symbol. */ | |
1080 | if (h != NULL) | |
1081 | { | |
1082 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++; | |
f5385ebf | 1083 | h->needs_plt = 1; |
5236c819 MS |
1084 | h->plt.refcount += 1; |
1085 | } | |
69fc87f1 MS |
1086 | else |
1087 | local_got_refcounts[r_symndx] += 1; | |
1088 | break; | |
1089 | ||
1090 | case R_390_TLS_LDM64: | |
1091 | htab->tls_ldm_got.refcount += 1; | |
1092 | break; | |
1093 | ||
1094 | case R_390_TLS_IE64: | |
1095 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1096 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1097 | case R_390_TLS_GOTIE64: |
1098 | case R_390_TLS_IEENT: | |
1099 | if (info->shared) | |
1100 | info->flags |= DF_STATIC_TLS; | |
1101 | /* Fall through */ | |
1102 | ||
1103 | case R_390_GOT12: | |
26e41594 | 1104 | case R_390_GOT16: |
bd1ea41b | 1105 | case R_390_GOT20: |
69fc87f1 MS |
1106 | case R_390_GOT32: |
1107 | case R_390_GOT64: | |
1108 | case R_390_GOTENT: | |
1109 | case R_390_TLS_GD64: | |
1110 | /* This symbol requires a global offset table entry. */ | |
1111 | switch (r_type) | |
1112 | { | |
1113 | default: | |
1114 | case R_390_GOT12: | |
1115 | case R_390_GOT16: | |
bd1ea41b | 1116 | case R_390_GOT20: |
69fc87f1 MS |
1117 | case R_390_GOT32: |
1118 | case R_390_GOTENT: | |
1119 | tls_type = GOT_NORMAL; | |
1120 | break; | |
1121 | case R_390_TLS_GD64: | |
1122 | tls_type = GOT_TLS_GD; | |
1123 | break; | |
1124 | case R_390_TLS_IE64: | |
1125 | case R_390_TLS_GOTIE64: | |
1126 | tls_type = GOT_TLS_IE; | |
1127 | break; | |
1128 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1129 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1130 | case R_390_TLS_IEENT: |
1131 | tls_type = GOT_TLS_IE_NLT; | |
1132 | break; | |
1133 | } | |
1134 | ||
1135 | if (h != NULL) | |
1136 | { | |
1137 | h->got.refcount += 1; | |
1138 | old_tls_type = elf_s390_hash_entry(h)->tls_type; | |
1139 | } | |
5236c819 MS |
1140 | else |
1141 | { | |
1142 | local_got_refcounts[r_symndx] += 1; | |
69fc87f1 | 1143 | old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx]; |
5236c819 | 1144 | } |
69fc87f1 MS |
1145 | /* If a TLS symbol is accessed using IE at least once, |
1146 | there is no point to use dynamic model for it. */ | |
1147 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN) | |
1148 | { | |
1149 | if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL) | |
1150 | { | |
1151 | (*_bfd_error_handler) | |
d003868e AM |
1152 | (_("%B: `%s' accessed both as normal and thread local symbol"), |
1153 | abfd, h->root.root.string); | |
69fc87f1 MS |
1154 | return FALSE; |
1155 | } | |
1156 | if (old_tls_type > tls_type) | |
1157 | tls_type = old_tls_type; | |
1158 | } | |
1159 | ||
1160 | if (old_tls_type != tls_type) | |
1161 | { | |
1162 | if (h != NULL) | |
1163 | elf_s390_hash_entry (h)->tls_type = tls_type; | |
1164 | else | |
1165 | elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1166 | } | |
1167 | ||
1168 | if (r_type != R_390_TLS_IE64) | |
1169 | break; | |
1170 | /* Fall through */ | |
1171 | ||
1172 | case R_390_TLS_LE64: | |
1173 | if (!info->shared) | |
1174 | break; | |
1175 | info->flags |= DF_STATIC_TLS; | |
1176 | /* Fall through */ | |
ec338859 | 1177 | |
947216bf AM |
1178 | case R_390_8: |
1179 | case R_390_16: | |
a85d7ed0 NC |
1180 | case R_390_32: |
1181 | case R_390_64: | |
947216bf AM |
1182 | case R_390_PC16: |
1183 | case R_390_PC16DBL: | |
a85d7ed0 NC |
1184 | case R_390_PC32: |
1185 | case R_390_PC32DBL: | |
1186 | case R_390_PC64: | |
470b557a | 1187 | if (h != NULL) |
0451c93c MS |
1188 | { |
1189 | /* If this reloc is in a read-only section, we might | |
1190 | need a copy reloc. We can't check reliably at this | |
1191 | stage whether the section is read-only, as input | |
1192 | sections have not yet been mapped to output sections. | |
1193 | Tentatively set the flag for now, and correct in | |
1194 | adjust_dynamic_symbol. */ | |
f5385ebf | 1195 | h->non_got_ref = 1; |
ec338859 | 1196 | |
470b557a AK |
1197 | if (!info->shared) |
1198 | { | |
1199 | /* We may need a .plt entry if the function this reloc | |
1200 | refers to is in a shared lib. */ | |
1201 | h->plt.refcount += 1; | |
1202 | } | |
0451c93c | 1203 | } |
ec338859 | 1204 | |
a85d7ed0 | 1205 | /* If we are creating a shared library, and this is a reloc |
0451c93c MS |
1206 | against a global symbol, or a non PC relative reloc |
1207 | against a local symbol, then we need to copy the reloc | |
1208 | into the shared library. However, if we are linking with | |
1209 | -Bsymbolic, we do not need to copy a reloc against a | |
1210 | global symbol which is defined in an object we are | |
1211 | including in the link (i.e., DEF_REGULAR is set). At | |
1212 | this point we have not seen all the input files, so it is | |
1213 | possible that DEF_REGULAR is not set now but will be set | |
1214 | later (it is never cleared). In case of a weak definition, | |
1215 | DEF_REGULAR may be cleared later by a strong definition in | |
1216 | a shared library. We account for that possibility below by | |
1217 | storing information in the relocs_copied field of the hash | |
1218 | table entry. A similar situation occurs when creating | |
1219 | shared libraries and symbol visibility changes render the | |
1220 | symbol local. | |
1221 | ||
1222 | If on the other hand, we are creating an executable, we | |
1223 | may need to keep relocations for symbols satisfied by a | |
1224 | dynamic library if we manage to avoid copy relocs for the | |
1225 | symbol. */ | |
1226 | if ((info->shared | |
1227 | && (sec->flags & SEC_ALLOC) != 0 | |
1228 | && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16 | |
1229 | && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL | |
1230 | && ELF64_R_TYPE (rel->r_info) != R_390_PC32 | |
1231 | && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL | |
1232 | && ELF64_R_TYPE (rel->r_info) != R_390_PC64) | |
1233 | || (h != NULL | |
8c21ca21 | 1234 | && (! SYMBOLIC_BIND (info, h) |
0451c93c | 1235 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1236 | || !h->def_regular)))) |
64285810 MS |
1237 | || (ELIMINATE_COPY_RELOCS |
1238 | && !info->shared | |
0451c93c MS |
1239 | && (sec->flags & SEC_ALLOC) != 0 |
1240 | && h != NULL | |
1241 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 1242 | || !h->def_regular))) |
a85d7ed0 | 1243 | { |
00d8c7a9 AK |
1244 | struct elf_dyn_relocs *p; |
1245 | struct elf_dyn_relocs **head; | |
ec338859 | 1246 | |
0451c93c MS |
1247 | /* We must copy these reloc types into the output file. |
1248 | Create a reloc section in dynobj and make room for | |
1249 | this reloc. */ | |
a85d7ed0 NC |
1250 | if (sreloc == NULL) |
1251 | { | |
440e9cd2 AK |
1252 | if (htab->elf.dynobj == NULL) |
1253 | htab->elf.dynobj = abfd; | |
1254 | ||
83bac4b0 NC |
1255 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1256 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
ec338859 | 1257 | |
a85d7ed0 | 1258 | if (sreloc == NULL) |
83bac4b0 | 1259 | return FALSE; |
a85d7ed0 | 1260 | } |
ec338859 | 1261 | |
0451c93c MS |
1262 | /* If this is a global symbol, we count the number of |
1263 | relocations we need for this symbol. */ | |
1264 | if (h != NULL) | |
a85d7ed0 | 1265 | { |
ec338859 | 1266 | head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs; |
0451c93c MS |
1267 | } |
1268 | else | |
1269 | { | |
ec338859 AM |
1270 | /* Track dynamic relocs needed for local syms too. |
1271 | We really need local syms available to do this | |
1272 | easily. Oh well. */ | |
ec338859 | 1273 | asection *s; |
6edfbbad DJ |
1274 | void *vpp; |
1275 | ||
87d72d41 AM |
1276 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1277 | abfd, r_symndx); | |
1278 | if (isym == NULL) | |
b34976b6 | 1279 | return FALSE; |
ec338859 | 1280 | |
87d72d41 AM |
1281 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
1282 | if (s == NULL) | |
1283 | s = sec; | |
1284 | ||
6edfbbad | 1285 | vpp = &elf_section_data (s)->local_dynrel; |
00d8c7a9 | 1286 | head = (struct elf_dyn_relocs **) vpp; |
ec338859 AM |
1287 | } |
1288 | ||
1289 | p = *head; | |
1290 | if (p == NULL || p->sec != sec) | |
1291 | { | |
1292 | bfd_size_type amt = sizeof *p; | |
00d8c7a9 | 1293 | p = ((struct elf_dyn_relocs *) |
ec338859 AM |
1294 | bfd_alloc (htab->elf.dynobj, amt)); |
1295 | if (p == NULL) | |
b34976b6 | 1296 | return FALSE; |
ec338859 AM |
1297 | p->next = *head; |
1298 | *head = p; | |
1299 | p->sec = sec; | |
1300 | p->count = 0; | |
1301 | p->pc_count = 0; | |
a85d7ed0 | 1302 | } |
ec338859 AM |
1303 | |
1304 | p->count += 1; | |
1305 | if (ELF64_R_TYPE (rel->r_info) == R_390_PC16 | |
1306 | || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL | |
1307 | || ELF64_R_TYPE (rel->r_info) == R_390_PC32 | |
1308 | || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL | |
1309 | || ELF64_R_TYPE (rel->r_info) == R_390_PC64) | |
1310 | p->pc_count += 1; | |
a85d7ed0 | 1311 | } |
a85d7ed0 | 1312 | break; |
ec338859 | 1313 | |
a85d7ed0 NC |
1314 | /* This relocation describes the C++ object vtable hierarchy. |
1315 | Reconstruct it for later use during GC. */ | |
947216bf | 1316 | case R_390_GNU_VTINHERIT: |
c152c796 | 1317 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 1318 | return FALSE; |
947216bf | 1319 | break; |
ec338859 | 1320 | |
a85d7ed0 NC |
1321 | /* This relocation describes which C++ vtable entries are actually |
1322 | used. Record for later use during GC. */ | |
947216bf | 1323 | case R_390_GNU_VTENTRY: |
d17e0c6e JB |
1324 | BFD_ASSERT (h != NULL); |
1325 | if (h != NULL | |
1326 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 1327 | return FALSE; |
947216bf | 1328 | break; |
ec338859 | 1329 | |
a85d7ed0 NC |
1330 | default: |
1331 | break; | |
1332 | } | |
1333 | } | |
1334 | ||
b34976b6 | 1335 | return TRUE; |
a85d7ed0 NC |
1336 | } |
1337 | ||
1338 | /* Return the section that should be marked against GC for a given | |
1339 | relocation. */ | |
1340 | ||
1341 | static asection * | |
07adf181 AM |
1342 | elf_s390_gc_mark_hook (asection *sec, |
1343 | struct bfd_link_info *info, | |
1344 | Elf_Internal_Rela *rel, | |
1345 | struct elf_link_hash_entry *h, | |
1346 | Elf_Internal_Sym *sym) | |
a85d7ed0 NC |
1347 | { |
1348 | if (h != NULL) | |
07adf181 AM |
1349 | switch (ELF64_R_TYPE (rel->r_info)) |
1350 | { | |
1351 | case R_390_GNU_VTINHERIT: | |
1352 | case R_390_GNU_VTENTRY: | |
1353 | return NULL; | |
1354 | } | |
1355 | ||
1356 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
a85d7ed0 NC |
1357 | } |
1358 | ||
1359 | /* Update the got entry reference counts for the section being removed. */ | |
1360 | ||
b34976b6 | 1361 | static bfd_boolean |
07adf181 AM |
1362 | elf_s390_gc_sweep_hook (bfd *abfd, |
1363 | struct bfd_link_info *info, | |
1364 | asection *sec, | |
1365 | const Elf_Internal_Rela *relocs) | |
a85d7ed0 | 1366 | { |
4dfe6ac6 | 1367 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
1368 | Elf_Internal_Shdr *symtab_hdr; |
1369 | struct elf_link_hash_entry **sym_hashes; | |
1370 | bfd_signed_vma *local_got_refcounts; | |
1371 | const Elf_Internal_Rela *rel, *relend; | |
a85d7ed0 | 1372 | |
7dda2462 TG |
1373 | if (info->relocatable) |
1374 | return TRUE; | |
1375 | ||
4dfe6ac6 NC |
1376 | htab = elf_s390_hash_table (info); |
1377 | if (htab == NULL) | |
1378 | return FALSE; | |
1379 | ||
ec338859 | 1380 | elf_section_data (sec)->local_dynrel = NULL; |
a85d7ed0 | 1381 | |
0ffa91dd | 1382 | symtab_hdr = &elf_symtab_hdr (abfd); |
0451c93c MS |
1383 | sym_hashes = elf_sym_hashes (abfd); |
1384 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
a85d7ed0 NC |
1385 | |
1386 | relend = relocs + sec->reloc_count; | |
1387 | for (rel = relocs; rel < relend; rel++) | |
5236c819 | 1388 | { |
26e41594 AM |
1389 | unsigned long r_symndx; |
1390 | unsigned int r_type; | |
1391 | struct elf_link_hash_entry *h = NULL; | |
1392 | ||
5236c819 | 1393 | r_symndx = ELF64_R_SYM (rel->r_info); |
26e41594 AM |
1394 | if (r_symndx >= symtab_hdr->sh_info) |
1395 | { | |
1396 | struct elf_s390_link_hash_entry *eh; | |
00d8c7a9 AK |
1397 | struct elf_dyn_relocs **pp; |
1398 | struct elf_dyn_relocs *p; | |
5236c819 | 1399 | |
26e41594 | 1400 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3eb128b2 AM |
1401 | while (h->root.type == bfd_link_hash_indirect |
1402 | || h->root.type == bfd_link_hash_warning) | |
1403 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
26e41594 | 1404 | eh = (struct elf_s390_link_hash_entry *) h; |
5236c819 | 1405 | |
26e41594 AM |
1406 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
1407 | if (p->sec == sec) | |
1408 | { | |
1409 | /* Everything must go for SEC. */ | |
1410 | *pp = p->next; | |
1411 | break; | |
1412 | } | |
1413 | } | |
470b557a AK |
1414 | else |
1415 | { | |
1416 | Elf_Internal_Sym *isym; | |
1417 | ||
1418 | /* A local symbol. */ | |
1419 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1420 | abfd, r_symndx); | |
1421 | if (isym == NULL) | |
1422 | return FALSE; | |
1423 | ||
1424 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
1425 | { | |
1426 | struct plt_entry *plt = elf_s390_local_plt (abfd); | |
1427 | if (plt[r_symndx].plt.refcount > 0) | |
1428 | plt[r_symndx].plt.refcount--; | |
1429 | } | |
1430 | } | |
26e41594 AM |
1431 | |
1432 | r_type = ELF64_R_TYPE (rel->r_info); | |
1433 | r_type = elf_s390_tls_transition (info, r_type, h != NULL); | |
69fc87f1 | 1434 | switch (r_type) |
5236c819 | 1435 | { |
69fc87f1 | 1436 | case R_390_TLS_LDM64: |
4dfe6ac6 NC |
1437 | if (htab->tls_ldm_got.refcount > 0) |
1438 | htab->tls_ldm_got.refcount -= 1; | |
69fc87f1 MS |
1439 | break; |
1440 | ||
1441 | case R_390_TLS_GD64: | |
1442 | case R_390_TLS_IE64: | |
1443 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1444 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1445 | case R_390_TLS_GOTIE64: |
1446 | case R_390_TLS_IEENT: | |
5236c819 MS |
1447 | case R_390_GOT12: |
1448 | case R_390_GOT16: | |
bd1ea41b | 1449 | case R_390_GOT20: |
5236c819 MS |
1450 | case R_390_GOT32: |
1451 | case R_390_GOT64: | |
1452 | case R_390_GOTOFF16: | |
1453 | case R_390_GOTOFF32: | |
1454 | case R_390_GOTOFF64: | |
1455 | case R_390_GOTPC: | |
1456 | case R_390_GOTPCDBL: | |
1457 | case R_390_GOTENT: | |
1458 | if (h != NULL) | |
1459 | { | |
1460 | if (h->got.refcount > 0) | |
1461 | h->got.refcount -= 1; | |
1462 | } | |
1463 | else if (local_got_refcounts != NULL) | |
1464 | { | |
1465 | if (local_got_refcounts[r_symndx] > 0) | |
1466 | local_got_refcounts[r_symndx] -= 1; | |
1467 | } | |
26e41594 | 1468 | break; |
a85d7ed0 | 1469 | |
5236c819 MS |
1470 | case R_390_8: |
1471 | case R_390_12: | |
1472 | case R_390_16: | |
bd1ea41b | 1473 | case R_390_20: |
5236c819 MS |
1474 | case R_390_32: |
1475 | case R_390_64: | |
1476 | case R_390_PC16: | |
1477 | case R_390_PC16DBL: | |
1478 | case R_390_PC32: | |
1479 | case R_390_PC32DBL: | |
1480 | case R_390_PC64: | |
26e41594 AM |
1481 | if (info->shared) |
1482 | break; | |
1483 | /* Fall through */ | |
a85d7ed0 | 1484 | |
69fc87f1 MS |
1485 | case R_390_PLT16DBL: |
1486 | case R_390_PLT32: | |
1487 | case R_390_PLT32DBL: | |
1488 | case R_390_PLT64: | |
1489 | case R_390_PLTOFF16: | |
1490 | case R_390_PLTOFF32: | |
1491 | case R_390_PLTOFF64: | |
1492 | if (h != NULL) | |
1493 | { | |
1494 | if (h->plt.refcount > 0) | |
1495 | h->plt.refcount -= 1; | |
1496 | } | |
1497 | break; | |
1498 | ||
1499 | case R_390_GOTPLT12: | |
1500 | case R_390_GOTPLT16: | |
bd1ea41b | 1501 | case R_390_GOTPLT20: |
69fc87f1 MS |
1502 | case R_390_GOTPLT32: |
1503 | case R_390_GOTPLT64: | |
1504 | case R_390_GOTPLTENT: | |
1505 | if (h != NULL) | |
1506 | { | |
1507 | if (h->plt.refcount > 0) | |
1508 | { | |
1509 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--; | |
1510 | h->plt.refcount -= 1; | |
1511 | } | |
1512 | } | |
1513 | else if (local_got_refcounts != NULL) | |
1514 | { | |
1515 | if (local_got_refcounts[r_symndx] > 0) | |
1516 | local_got_refcounts[r_symndx] -= 1; | |
1517 | } | |
1518 | break; | |
1519 | ||
5236c819 MS |
1520 | default: |
1521 | break; | |
1522 | } | |
1523 | } | |
a85d7ed0 | 1524 | |
b34976b6 | 1525 | return TRUE; |
a85d7ed0 NC |
1526 | } |
1527 | ||
5236c819 MS |
1528 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
1529 | entry but we found we will not create any. Called when we find we will | |
1530 | not have any PLT for this symbol, by for example | |
1531 | elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
1532 | or elf_s390_size_dynamic_sections if no dynamic sections will be | |
1533 | created (we're only linking static objects). */ | |
1534 | ||
1535 | static void | |
2c3fc389 | 1536 | elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h) |
5236c819 MS |
1537 | { |
1538 | if (h->elf.root.type == bfd_link_hash_warning) | |
1539 | h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link; | |
1540 | ||
1541 | if (h->gotplt_refcount <= 0) | |
1542 | return; | |
1543 | ||
1544 | /* We simply add the number of gotplt references to the number | |
1545 | * of got references for this symbol. */ | |
1546 | h->elf.got.refcount += h->gotplt_refcount; | |
1547 | h->gotplt_refcount = -1; | |
1548 | } | |
1549 | ||
a85d7ed0 NC |
1550 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1551 | regular object. The current definition is in some section of the | |
1552 | dynamic object, but we're not including those sections. We have to | |
1553 | change the definition to something the rest of the link can | |
1554 | understand. */ | |
1555 | ||
b34976b6 | 1556 | static bfd_boolean |
4dfe6ac6 NC |
1557 | elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info, |
1558 | struct elf_link_hash_entry *h) | |
a85d7ed0 | 1559 | { |
0451c93c | 1560 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 | 1561 | asection *s; |
a85d7ed0 | 1562 | |
470b557a AK |
1563 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1564 | if (s390_is_ifunc_symbol_p (h)) | |
1565 | return TRUE; | |
1566 | ||
a85d7ed0 NC |
1567 | /* If this is a function, put it in the procedure linkage table. We |
1568 | will fill in the contents of the procedure linkage table later | |
cedb70c5 | 1569 | (although we could actually do it here). */ |
a85d7ed0 | 1570 | if (h->type == STT_FUNC |
f5385ebf | 1571 | || h->needs_plt) |
a85d7ed0 | 1572 | { |
0451c93c | 1573 | if (h->plt.refcount <= 0 |
8c21ca21 AK |
1574 | || SYMBOL_CALLS_LOCAL (info, h) |
1575 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1576 | && h->root.type == bfd_link_hash_undefweak)) | |
a85d7ed0 NC |
1577 | { |
1578 | /* This case can occur if we saw a PLT32 reloc in an input | |
947216bf AM |
1579 | file, but the symbol was never referred to by a dynamic |
1580 | object, or if all references were garbage collected. In | |
0451c93c MS |
1581 | such a case, we don't actually need to build a procedure |
1582 | linkage table, and we can just do a PC32 reloc instead. */ | |
a85d7ed0 | 1583 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1584 | h->needs_plt = 0; |
5236c819 | 1585 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
a85d7ed0 NC |
1586 | } |
1587 | ||
b34976b6 | 1588 | return TRUE; |
a85d7ed0 | 1589 | } |
bbd7ec4a | 1590 | else |
0451c93c MS |
1591 | /* It's possible that we incorrectly decided a .plt reloc was |
1592 | needed for an R_390_PC32 reloc to a non-function sym in | |
1593 | check_relocs. We can't decide accurately between function and | |
1594 | non-function syms in check-relocs; Objects loaded later in | |
1595 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1596 | h->plt.offset = (bfd_vma) -1; |
a85d7ed0 NC |
1597 | |
1598 | /* If this is a weak symbol, and there is a real definition, the | |
1599 | processor independent code will have arranged for us to see the | |
1600 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1601 | if (h->u.weakdef != NULL) |
a85d7ed0 | 1602 | { |
f6e332e6 AM |
1603 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1604 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1605 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1606 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
64285810 | 1607 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
f6e332e6 | 1608 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 1609 | return TRUE; |
a85d7ed0 NC |
1610 | } |
1611 | ||
1612 | /* This is a reference to a symbol defined by a dynamic object which | |
1613 | is not a function. */ | |
1614 | ||
1615 | /* If we are creating a shared library, we must presume that the | |
1616 | only references to the symbol are via the global offset table. | |
1617 | For such cases we need not do anything here; the relocations will | |
1618 | be handled correctly by relocate_section. */ | |
1619 | if (info->shared) | |
b34976b6 | 1620 | return TRUE; |
a85d7ed0 NC |
1621 | |
1622 | /* If there are no references to this symbol that do not use the | |
1623 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 1624 | if (!h->non_got_ref) |
b34976b6 | 1625 | return TRUE; |
a85d7ed0 | 1626 | |
0451c93c MS |
1627 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1628 | if (info->nocopyreloc) | |
1629 | { | |
f5385ebf | 1630 | h->non_got_ref = 0; |
b34976b6 | 1631 | return TRUE; |
0451c93c MS |
1632 | } |
1633 | ||
64285810 | 1634 | if (ELIMINATE_COPY_RELOCS) |
0451c93c | 1635 | { |
64285810 | 1636 | struct elf_s390_link_hash_entry * eh; |
00d8c7a9 | 1637 | struct elf_dyn_relocs *p; |
0451c93c | 1638 | |
64285810 MS |
1639 | eh = (struct elf_s390_link_hash_entry *) h; |
1640 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1641 | { | |
1642 | s = p->sec->output_section; | |
1643 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1644 | break; | |
1645 | } | |
1646 | ||
1647 | /* If we didn't find any dynamic relocs in read-only sections, then | |
1648 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1649 | if (p == NULL) | |
1650 | { | |
f5385ebf | 1651 | h->non_got_ref = 0; |
64285810 MS |
1652 | return TRUE; |
1653 | } | |
0451c93c MS |
1654 | } |
1655 | ||
a85d7ed0 NC |
1656 | /* We must allocate the symbol in our .dynbss section, which will |
1657 | become part of the .bss section of the executable. There will be | |
1658 | an entry for this symbol in the .dynsym section. The dynamic | |
1659 | object will contain position independent code, so all references | |
1660 | from the dynamic object to this symbol will go through the global | |
1661 | offset table. The dynamic linker will use the .dynsym entry to | |
1662 | determine the address it must put in the global offset table, so | |
1663 | both the dynamic object and the regular object will refer to the | |
1664 | same memory location for the variable. */ | |
1665 | ||
0451c93c | 1666 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
1667 | if (htab == NULL) |
1668 | return FALSE; | |
a85d7ed0 | 1669 | |
0451c93c MS |
1670 | /* We must generate a R_390_COPY reloc to tell the dynamic linker to |
1671 | copy the initial value out of the dynamic object and into the | |
1672 | runtime process image. */ | |
1d7e9d18 | 1673 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
a85d7ed0 | 1674 | { |
eea6121a | 1675 | htab->srelbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 1676 | h->needs_copy = 1; |
a85d7ed0 NC |
1677 | } |
1678 | ||
0451c93c | 1679 | s = htab->sdynbss; |
a85d7ed0 | 1680 | |
027297b7 | 1681 | return _bfd_elf_adjust_dynamic_copy (h, s); |
a85d7ed0 NC |
1682 | } |
1683 | ||
0451c93c MS |
1684 | /* Allocate space in .plt, .got and associated reloc sections for |
1685 | dynamic relocs. */ | |
1686 | ||
b34976b6 | 1687 | static bfd_boolean |
4dfe6ac6 NC |
1688 | allocate_dynrelocs (struct elf_link_hash_entry *h, |
1689 | void * inf) | |
0451c93c MS |
1690 | { |
1691 | struct bfd_link_info *info; | |
1692 | struct elf_s390_link_hash_table *htab; | |
470b557a | 1693 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h; |
00d8c7a9 | 1694 | struct elf_dyn_relocs *p; |
0451c93c | 1695 | |
e92d460e | 1696 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1697 | return TRUE; |
0451c93c MS |
1698 | |
1699 | info = (struct bfd_link_info *) inf; | |
1700 | htab = elf_s390_hash_table (info); | |
4dfe6ac6 NC |
1701 | if (htab == NULL) |
1702 | return FALSE; | |
0451c93c | 1703 | |
470b557a AK |
1704 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
1705 | here if it is defined and referenced in a non-shared object. */ | |
1706 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
1707 | return s390_elf_allocate_ifunc_dyn_relocs (info, h, | |
1708 | &eh->dyn_relocs); | |
1709 | else if (htab->elf.dynamic_sections_created | |
1710 | && h->plt.refcount > 0) | |
0451c93c MS |
1711 | { |
1712 | /* Make sure this symbol is output as a dynamic symbol. | |
1713 | Undefined weak syms won't yet be marked as dynamic. */ | |
1714 | if (h->dynindx == -1 | |
f5385ebf | 1715 | && !h->forced_local) |
0451c93c | 1716 | { |
c152c796 | 1717 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1718 | return FALSE; |
0451c93c MS |
1719 | } |
1720 | ||
82058a73 | 1721 | if (info->shared |
4ec72bde | 1722 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
0451c93c | 1723 | { |
f41345a7 | 1724 | asection *s = htab->elf.splt; |
0451c93c MS |
1725 | |
1726 | /* If this is the first .plt entry, make room for the special | |
1727 | first entry. */ | |
eea6121a AM |
1728 | if (s->size == 0) |
1729 | s->size += PLT_FIRST_ENTRY_SIZE; | |
0451c93c | 1730 | |
eea6121a | 1731 | h->plt.offset = s->size; |
0451c93c MS |
1732 | |
1733 | /* If this symbol is not defined in a regular file, and we are | |
1734 | not generating a shared library, then set the symbol to this | |
1735 | location in the .plt. This is required to make function | |
1736 | pointers compare as equal between the normal executable and | |
1737 | the shared library. */ | |
1738 | if (! info->shared | |
f5385ebf | 1739 | && !h->def_regular) |
0451c93c MS |
1740 | { |
1741 | h->root.u.def.section = s; | |
1742 | h->root.u.def.value = h->plt.offset; | |
1743 | } | |
ec338859 | 1744 | |
0451c93c | 1745 | /* Make room for this entry. */ |
eea6121a | 1746 | s->size += PLT_ENTRY_SIZE; |
ec338859 | 1747 | |
0451c93c MS |
1748 | /* We also need to make an entry in the .got.plt section, which |
1749 | will be placed in the .got section by the linker script. */ | |
f41345a7 | 1750 | htab->elf.sgotplt->size += GOT_ENTRY_SIZE; |
0451c93c MS |
1751 | |
1752 | /* We also need to make an entry in the .rela.plt section. */ | |
f41345a7 | 1753 | htab->elf.srelplt->size += sizeof (Elf64_External_Rela); |
0451c93c MS |
1754 | } |
1755 | else | |
1756 | { | |
1757 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1758 | h->needs_plt = 0; |
5236c819 | 1759 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c MS |
1760 | } |
1761 | } | |
1762 | else | |
1763 | { | |
1764 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1765 | h->needs_plt = 0; |
5236c819 | 1766 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c MS |
1767 | } |
1768 | ||
69fc87f1 MS |
1769 | /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to |
1770 | the binary, we can optimize a bit. IE64 and GOTIE64 get converted | |
1771 | to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT | |
1772 | we can save the dynamic TLS relocation. */ | |
1773 | if (h->got.refcount > 0 | |
1774 | && !info->shared | |
1775 | && h->dynindx == -1 | |
1776 | && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE) | |
1777 | { | |
1778 | if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT) | |
1779 | /* For the GOTIE access without a literal pool entry the offset has | |
1780 | to be stored somewhere. The immediate value in the instruction | |
1781 | is not bit enough so the value is stored in the got. */ | |
1782 | { | |
f41345a7 AK |
1783 | h->got.offset = htab->elf.sgot->size; |
1784 | htab->elf.sgot->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1785 | } |
1786 | else | |
1787 | h->got.offset = (bfd_vma) -1; | |
1788 | } | |
1789 | else if (h->got.refcount > 0) | |
0451c93c MS |
1790 | { |
1791 | asection *s; | |
b34976b6 | 1792 | bfd_boolean dyn; |
69fc87f1 | 1793 | int tls_type = elf_s390_hash_entry(h)->tls_type; |
0451c93c MS |
1794 | |
1795 | /* Make sure this symbol is output as a dynamic symbol. | |
1796 | Undefined weak syms won't yet be marked as dynamic. */ | |
1797 | if (h->dynindx == -1 | |
f5385ebf | 1798 | && !h->forced_local) |
0451c93c | 1799 | { |
c152c796 | 1800 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1801 | return FALSE; |
0451c93c MS |
1802 | } |
1803 | ||
f41345a7 | 1804 | s = htab->elf.sgot; |
eea6121a AM |
1805 | h->got.offset = s->size; |
1806 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1807 | /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */ |
1808 | if (tls_type == GOT_TLS_GD) | |
eea6121a | 1809 | s->size += GOT_ENTRY_SIZE; |
0451c93c | 1810 | dyn = htab->elf.dynamic_sections_created; |
69fc87f1 MS |
1811 | /* R_390_TLS_IE64 needs one dynamic relocation, |
1812 | R_390_TLS_GD64 needs one if local symbol and two if global. */ | |
1813 | if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1814 | || tls_type >= GOT_TLS_IE) | |
f41345a7 | 1815 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); |
69fc87f1 | 1816 | else if (tls_type == GOT_TLS_GD) |
f41345a7 | 1817 | htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela); |
82058a73 MS |
1818 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1819 | || h->root.type != bfd_link_hash_undefweak) | |
1820 | && (info->shared | |
1821 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
f41345a7 | 1822 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); |
0451c93c MS |
1823 | } |
1824 | else | |
1825 | h->got.offset = (bfd_vma) -1; | |
1826 | ||
0451c93c | 1827 | if (eh->dyn_relocs == NULL) |
b34976b6 | 1828 | return TRUE; |
0451c93c MS |
1829 | |
1830 | /* In the shared -Bsymbolic case, discard space allocated for | |
1831 | dynamic pc-relative relocs against symbols which turn out to be | |
1832 | defined in regular objects. For the normal shared case, discard | |
1833 | space for pc-relative relocs that have become local due to symbol | |
1834 | visibility changes. */ | |
1835 | ||
1836 | if (info->shared) | |
1837 | { | |
8c21ca21 | 1838 | if (SYMBOL_CALLS_LOCAL (info, h)) |
0451c93c | 1839 | { |
00d8c7a9 | 1840 | struct elf_dyn_relocs **pp; |
0451c93c MS |
1841 | |
1842 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1843 | { | |
1844 | p->count -= p->pc_count; | |
1845 | p->pc_count = 0; | |
1846 | if (p->count == 0) | |
1847 | *pp = p->next; | |
1848 | else | |
1849 | pp = &p->next; | |
1850 | } | |
1851 | } | |
82058a73 MS |
1852 | |
1853 | /* Also discard relocs on undefined weak syms with non-default | |
1854 | visibility. */ | |
22d606e9 | 1855 | if (eh->dyn_relocs != NULL |
82058a73 | 1856 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
1857 | { |
1858 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
1859 | eh->dyn_relocs = NULL; | |
1860 | ||
1861 | /* Make sure undefined weak symbols are output as a dynamic | |
1862 | symbol in PIEs. */ | |
1863 | else if (h->dynindx == -1 | |
1864 | && !h->forced_local) | |
1865 | { | |
1866 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1867 | return FALSE; | |
1868 | } | |
1869 | } | |
0451c93c | 1870 | } |
64285810 | 1871 | else if (ELIMINATE_COPY_RELOCS) |
0451c93c MS |
1872 | { |
1873 | /* For the non-shared case, discard space for relocs against | |
1874 | symbols which turn out to need copy relocs or are not | |
1875 | dynamic. */ | |
1876 | ||
f5385ebf AM |
1877 | if (!h->non_got_ref |
1878 | && ((h->def_dynamic | |
1879 | && !h->def_regular) | |
0451c93c MS |
1880 | || (htab->elf.dynamic_sections_created |
1881 | && (h->root.type == bfd_link_hash_undefweak | |
1882 | || h->root.type == bfd_link_hash_undefined)))) | |
1883 | { | |
1884 | /* Make sure this symbol is output as a dynamic symbol. | |
1885 | Undefined weak syms won't yet be marked as dynamic. */ | |
1886 | if (h->dynindx == -1 | |
f5385ebf | 1887 | && !h->forced_local) |
0451c93c | 1888 | { |
c152c796 | 1889 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1890 | return FALSE; |
0451c93c MS |
1891 | } |
1892 | ||
1893 | /* If that succeeded, we know we'll be keeping all the | |
1894 | relocs. */ | |
1895 | if (h->dynindx != -1) | |
1896 | goto keep; | |
1897 | } | |
1898 | ||
1899 | eh->dyn_relocs = NULL; | |
1900 | ||
ec338859 | 1901 | keep: ; |
0451c93c MS |
1902 | } |
1903 | ||
1904 | /* Finally, allocate space. */ | |
1905 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1906 | { | |
1907 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 1908 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
0451c93c MS |
1909 | } |
1910 | ||
b34976b6 | 1911 | return TRUE; |
0451c93c MS |
1912 | } |
1913 | ||
1914 | /* Find any dynamic relocs that apply to read-only sections. */ | |
1915 | ||
b34976b6 | 1916 | static bfd_boolean |
2c3fc389 | 1917 | readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
0451c93c MS |
1918 | { |
1919 | struct elf_s390_link_hash_entry *eh; | |
00d8c7a9 | 1920 | struct elf_dyn_relocs *p; |
0451c93c MS |
1921 | |
1922 | eh = (struct elf_s390_link_hash_entry *) h; | |
1923 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1924 | { | |
1925 | asection *s = p->sec->output_section; | |
1926 | ||
1927 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1928 | { | |
1929 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
1930 | ||
1931 | info->flags |= DF_TEXTREL; | |
1932 | ||
1933 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 1934 | return FALSE; |
0451c93c MS |
1935 | } |
1936 | } | |
b34976b6 | 1937 | return TRUE; |
0451c93c MS |
1938 | } |
1939 | ||
a85d7ed0 NC |
1940 | /* Set the sizes of the dynamic sections. */ |
1941 | ||
b34976b6 | 1942 | static bfd_boolean |
4dfe6ac6 NC |
1943 | elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
1944 | struct bfd_link_info *info) | |
a85d7ed0 | 1945 | { |
0451c93c | 1946 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
1947 | bfd *dynobj; |
1948 | asection *s; | |
b34976b6 | 1949 | bfd_boolean relocs; |
0451c93c | 1950 | bfd *ibfd; |
a85d7ed0 | 1951 | |
0451c93c | 1952 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
1953 | if (htab == NULL) |
1954 | return FALSE; | |
1955 | ||
0451c93c MS |
1956 | dynobj = htab->elf.dynobj; |
1957 | if (dynobj == NULL) | |
1958 | abort (); | |
a85d7ed0 | 1959 | |
0451c93c | 1960 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
1961 | { |
1962 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 1963 | if (info->executable) |
a85d7ed0 | 1964 | { |
3d4d4302 | 1965 | s = bfd_get_linker_section (dynobj, ".interp"); |
0451c93c MS |
1966 | if (s == NULL) |
1967 | abort (); | |
eea6121a | 1968 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
a85d7ed0 NC |
1969 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1970 | } | |
1971 | } | |
a85d7ed0 | 1972 | |
0451c93c MS |
1973 | /* Set up .got offsets for local syms, and space for local dynamic |
1974 | relocs. */ | |
1975 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
a85d7ed0 | 1976 | { |
0451c93c MS |
1977 | bfd_signed_vma *local_got; |
1978 | bfd_signed_vma *end_local_got; | |
69fc87f1 | 1979 | char *local_tls_type; |
0451c93c MS |
1980 | bfd_size_type locsymcount; |
1981 | Elf_Internal_Shdr *symtab_hdr; | |
1982 | asection *srela; | |
470b557a AK |
1983 | struct plt_entry *local_plt; |
1984 | unsigned int i; | |
a85d7ed0 | 1985 | |
0ffa91dd | 1986 | if (! is_s390_elf (ibfd)) |
a85d7ed0 NC |
1987 | continue; |
1988 | ||
0451c93c | 1989 | for (s = ibfd->sections; s != NULL; s = s->next) |
a85d7ed0 | 1990 | { |
00d8c7a9 | 1991 | struct elf_dyn_relocs *p; |
0451c93c | 1992 | |
6edfbbad | 1993 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
a85d7ed0 | 1994 | { |
ec338859 AM |
1995 | if (!bfd_is_abs_section (p->sec) |
1996 | && bfd_is_abs_section (p->sec->output_section)) | |
1997 | { | |
1998 | /* Input section has been discarded, either because | |
1999 | it is a copy of a linkonce section or due to | |
2000 | linker script /DISCARD/, so we'll be discarding | |
2001 | the relocs too. */ | |
2002 | } | |
248866a8 | 2003 | else if (p->count != 0) |
ec338859 AM |
2004 | { |
2005 | srela = elf_section_data (p->sec)->sreloc; | |
eea6121a | 2006 | srela->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
2007 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
2008 | info->flags |= DF_TEXTREL; | |
ec338859 | 2009 | } |
a85d7ed0 NC |
2010 | } |
2011 | } | |
0451c93c MS |
2012 | |
2013 | local_got = elf_local_got_refcounts (ibfd); | |
2014 | if (!local_got) | |
2015 | continue; | |
2016 | ||
0ffa91dd | 2017 | symtab_hdr = &elf_symtab_hdr (ibfd); |
0451c93c MS |
2018 | locsymcount = symtab_hdr->sh_info; |
2019 | end_local_got = local_got + locsymcount; | |
69fc87f1 | 2020 | local_tls_type = elf_s390_local_got_tls_type (ibfd); |
f41345a7 AK |
2021 | s = htab->elf.sgot; |
2022 | srela = htab->elf.srelgot; | |
69fc87f1 | 2023 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
a85d7ed0 | 2024 | { |
0451c93c | 2025 | if (*local_got > 0) |
a85d7ed0 | 2026 | { |
eea6121a AM |
2027 | *local_got = s->size; |
2028 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 | 2029 | if (*local_tls_type == GOT_TLS_GD) |
eea6121a | 2030 | s->size += GOT_ENTRY_SIZE; |
0451c93c | 2031 | if (info->shared) |
eea6121a | 2032 | srela->size += sizeof (Elf64_External_Rela); |
a85d7ed0 NC |
2033 | } |
2034 | else | |
0451c93c | 2035 | *local_got = (bfd_vma) -1; |
a85d7ed0 | 2036 | } |
470b557a AK |
2037 | |
2038 | local_plt = elf_s390_local_plt (ibfd); | |
2039 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
2040 | { | |
2041 | if (local_plt[i].plt.refcount > 0) | |
2042 | { | |
2043 | local_plt[i].plt.offset = htab->elf.iplt->size; | |
2044 | htab->elf.iplt->size += PLT_ENTRY_SIZE; | |
2045 | htab->elf.igotplt->size += GOT_ENTRY_SIZE; | |
2046 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
2047 | } | |
2048 | else | |
2049 | local_plt[i].plt.offset = (bfd_vma) -1; | |
2050 | } | |
0451c93c MS |
2051 | } |
2052 | ||
69fc87f1 MS |
2053 | if (htab->tls_ldm_got.refcount > 0) |
2054 | { | |
2055 | /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64 | |
2056 | relocs. */ | |
f41345a7 AK |
2057 | htab->tls_ldm_got.offset = htab->elf.sgot->size; |
2058 | htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE; | |
2059 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); | |
69fc87f1 MS |
2060 | } |
2061 | else | |
2062 | htab->tls_ldm_got.offset = -1; | |
2063 | ||
0451c93c MS |
2064 | /* Allocate global sym .plt and .got entries, and space for global |
2065 | sym dynamic relocs. */ | |
2c3fc389 | 2066 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
0451c93c MS |
2067 | |
2068 | /* We now have determined the sizes of the various dynamic sections. | |
2069 | Allocate memory for them. */ | |
b34976b6 | 2070 | relocs = FALSE; |
0451c93c MS |
2071 | for (s = dynobj->sections; s != NULL; s = s->next) |
2072 | { | |
2073 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2074 | continue; | |
2075 | ||
f41345a7 AK |
2076 | if (s == htab->elf.splt |
2077 | || s == htab->elf.sgot | |
2078 | || s == htab->elf.sgotplt | |
470b557a AK |
2079 | || s == htab->sdynbss |
2080 | || s == htab->elf.iplt | |
2081 | || s == htab->elf.igotplt | |
2082 | || s == htab->irelifunc) | |
0451c93c MS |
2083 | { |
2084 | /* Strip this section if we don't need it; see the | |
2085 | comment below. */ | |
2086 | } | |
0112cd26 | 2087 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
0451c93c | 2088 | { |
f41345a7 | 2089 | if (s->size != 0 && s != htab->elf.srelplt) |
b34976b6 | 2090 | relocs = TRUE; |
ec338859 | 2091 | |
0451c93c MS |
2092 | /* We use the reloc_count field as a counter if we need |
2093 | to copy relocs into the output file. */ | |
2094 | s->reloc_count = 0; | |
2095 | } | |
2096 | else | |
a85d7ed0 NC |
2097 | { |
2098 | /* It's not one of our sections, so don't allocate space. */ | |
2099 | continue; | |
2100 | } | |
2101 | ||
eea6121a | 2102 | if (s->size == 0) |
a85d7ed0 | 2103 | { |
0451c93c MS |
2104 | /* If we don't need this section, strip it from the |
2105 | output file. This is to handle .rela.bss and | |
2106 | .rela.plt. We must create it in | |
2107 | create_dynamic_sections, because it must be created | |
2108 | before the linker maps input sections to output | |
2109 | sections. The linker does that before | |
2110 | adjust_dynamic_symbol is called, and it is that | |
2111 | function which decides whether anything needs to go | |
2112 | into these sections. */ | |
2113 | ||
8423293d | 2114 | s->flags |= SEC_EXCLUDE; |
a85d7ed0 NC |
2115 | continue; |
2116 | } | |
2117 | ||
c456f082 AM |
2118 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2119 | continue; | |
2120 | ||
0451c93c MS |
2121 | /* Allocate memory for the section contents. We use bfd_zalloc |
2122 | here in case unused entries are not reclaimed before the | |
2123 | section's contents are written out. This should not happen, | |
2124 | but this way if it does, we get a R_390_NONE reloc instead | |
2125 | of garbage. */ | |
eea6121a | 2126 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
0451c93c | 2127 | if (s->contents == NULL) |
b34976b6 | 2128 | return FALSE; |
a85d7ed0 NC |
2129 | } |
2130 | ||
0451c93c | 2131 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
2132 | { |
2133 | /* Add some entries to the .dynamic section. We fill in the | |
2134 | values later, in elf_s390_finish_dynamic_sections, but we | |
2135 | must add the entries now so that we get the correct size for | |
2136 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2137 | dynamic linker and used by the debugger. */ | |
dc810e39 | 2138 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2139 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 2140 | |
36af4a4e | 2141 | if (info->executable) |
a85d7ed0 | 2142 | { |
dc810e39 | 2143 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2144 | return FALSE; |
a85d7ed0 NC |
2145 | } |
2146 | ||
f41345a7 | 2147 | if (htab->elf.splt->size != 0) |
a85d7ed0 | 2148 | { |
dc810e39 AM |
2149 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2150 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2151 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2152 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2153 | return FALSE; |
a85d7ed0 NC |
2154 | } |
2155 | ||
2156 | if (relocs) | |
947216bf AM |
2157 | { |
2158 | if (!add_dynamic_entry (DT_RELA, 0) | |
2159 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2160 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 2161 | return FALSE; |
ec338859 | 2162 | |
0451c93c MS |
2163 | /* If any dynamic relocs apply to a read-only section, |
2164 | then we need a DT_TEXTREL entry. */ | |
248866a8 AM |
2165 | if ((info->flags & DF_TEXTREL) == 0) |
2166 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, | |
2c3fc389 | 2167 | info); |
ec338859 | 2168 | |
0451c93c MS |
2169 | if ((info->flags & DF_TEXTREL) != 0) |
2170 | { | |
2171 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2172 | return FALSE; |
0451c93c | 2173 | } |
a85d7ed0 NC |
2174 | } |
2175 | } | |
dc810e39 | 2176 | #undef add_dynamic_entry |
a85d7ed0 | 2177 | |
b34976b6 | 2178 | return TRUE; |
a85d7ed0 NC |
2179 | } |
2180 | ||
69fc87f1 MS |
2181 | /* Return the base VMA address which should be subtracted from real addresses |
2182 | when resolving @dtpoff relocation. | |
2183 | This is PT_TLS segment p_vaddr. */ | |
2184 | ||
2185 | static bfd_vma | |
2c3fc389 | 2186 | dtpoff_base (struct bfd_link_info *info) |
69fc87f1 | 2187 | { |
e1918d23 AM |
2188 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2189 | if (elf_hash_table (info)->tls_sec == NULL) | |
69fc87f1 | 2190 | return 0; |
e1918d23 | 2191 | return elf_hash_table (info)->tls_sec->vma; |
69fc87f1 MS |
2192 | } |
2193 | ||
2194 | /* Return the relocation value for @tpoff relocation | |
2195 | if STT_TLS virtual address is ADDRESS. */ | |
2196 | ||
2197 | static bfd_vma | |
2c3fc389 | 2198 | tpoff (struct bfd_link_info *info, bfd_vma address) |
69fc87f1 | 2199 | { |
e1918d23 | 2200 | struct elf_link_hash_table *htab = elf_hash_table (info); |
69fc87f1 | 2201 | |
e1918d23 AM |
2202 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2203 | if (htab->tls_sec == NULL) | |
69fc87f1 | 2204 | return 0; |
e1918d23 | 2205 | return htab->tls_size + htab->tls_sec->vma - address; |
69fc87f1 MS |
2206 | } |
2207 | ||
2208 | /* Complain if TLS instruction relocation is against an invalid | |
2209 | instruction. */ | |
2210 | ||
2211 | static void | |
2c3fc389 NC |
2212 | invalid_tls_insn (bfd *input_bfd, |
2213 | asection *input_section, | |
2214 | Elf_Internal_Rela *rel) | |
69fc87f1 MS |
2215 | { |
2216 | reloc_howto_type *howto; | |
2217 | ||
2218 | howto = elf_howto_table + ELF64_R_TYPE (rel->r_info); | |
2219 | (*_bfd_error_handler) | |
d003868e AM |
2220 | (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"), |
2221 | input_bfd, | |
2222 | input_section, | |
69fc87f1 MS |
2223 | (long) rel->r_offset, |
2224 | howto->name); | |
77df2968 | 2225 | bfd_set_error (bfd_error_bad_value); |
69fc87f1 MS |
2226 | } |
2227 | ||
a85d7ed0 NC |
2228 | /* Relocate a 390 ELF section. */ |
2229 | ||
b34976b6 | 2230 | static bfd_boolean |
4dfe6ac6 NC |
2231 | elf_s390_relocate_section (bfd *output_bfd, |
2232 | struct bfd_link_info *info, | |
2233 | bfd *input_bfd, | |
2234 | asection *input_section, | |
2235 | bfd_byte *contents, | |
2236 | Elf_Internal_Rela *relocs, | |
2237 | Elf_Internal_Sym *local_syms, | |
2238 | asection **local_sections) | |
a85d7ed0 | 2239 | { |
0451c93c | 2240 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
2241 | Elf_Internal_Shdr *symtab_hdr; |
2242 | struct elf_link_hash_entry **sym_hashes; | |
2243 | bfd_vma *local_got_offsets; | |
a85d7ed0 NC |
2244 | Elf_Internal_Rela *rel; |
2245 | Elf_Internal_Rela *relend; | |
2246 | ||
0ffa91dd NC |
2247 | BFD_ASSERT (is_s390_elf (input_bfd)); |
2248 | ||
0451c93c | 2249 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
2250 | if (htab == NULL) |
2251 | return FALSE; | |
2252 | ||
0ffa91dd | 2253 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
a85d7ed0 NC |
2254 | sym_hashes = elf_sym_hashes (input_bfd); |
2255 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2256 | ||
a85d7ed0 NC |
2257 | rel = relocs; |
2258 | relend = relocs + input_section->reloc_count; | |
2259 | for (; rel < relend; rel++) | |
2260 | { | |
5236c819 | 2261 | unsigned int r_type; |
a85d7ed0 NC |
2262 | reloc_howto_type *howto; |
2263 | unsigned long r_symndx; | |
2264 | struct elf_link_hash_entry *h; | |
2265 | Elf_Internal_Sym *sym; | |
2266 | asection *sec; | |
0451c93c | 2267 | bfd_vma off; |
a85d7ed0 | 2268 | bfd_vma relocation; |
b34976b6 | 2269 | bfd_boolean unresolved_reloc; |
a85d7ed0 | 2270 | bfd_reloc_status_type r; |
69fc87f1 | 2271 | int tls_type; |
470b557a | 2272 | asection *base_got = htab->elf.sgot; |
a85d7ed0 NC |
2273 | |
2274 | r_type = ELF64_R_TYPE (rel->r_info); | |
0451c93c | 2275 | if (r_type == (int) R_390_GNU_VTINHERIT |
947216bf AM |
2276 | || r_type == (int) R_390_GNU_VTENTRY) |
2277 | continue; | |
5236c819 | 2278 | if (r_type >= (int) R_390_max) |
a85d7ed0 NC |
2279 | { |
2280 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2281 | return FALSE; |
a85d7ed0 | 2282 | } |
a85d7ed0 | 2283 | |
b491616a | 2284 | howto = elf_howto_table + r_type; |
a85d7ed0 | 2285 | r_symndx = ELF64_R_SYM (rel->r_info); |
5236c819 | 2286 | |
a85d7ed0 NC |
2287 | h = NULL; |
2288 | sym = NULL; | |
2289 | sec = NULL; | |
b34976b6 | 2290 | unresolved_reloc = FALSE; |
a85d7ed0 NC |
2291 | if (r_symndx < symtab_hdr->sh_info) |
2292 | { | |
2293 | sym = local_syms + r_symndx; | |
2294 | sec = local_sections[r_symndx]; | |
470b557a AK |
2295 | |
2296 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
2297 | { | |
2298 | struct plt_entry *local_plt = elf_s390_local_plt (input_bfd); | |
2299 | if (local_plt == NULL) | |
2300 | return FALSE; | |
2301 | ||
2302 | /* Address of the PLT slot. */ | |
2303 | relocation = (htab->elf.iplt->output_section->vma | |
2304 | + htab->elf.iplt->output_offset | |
2305 | + local_plt[r_symndx].plt.offset); | |
2306 | ||
2307 | switch (r_type) | |
2308 | { | |
2309 | case R_390_GOTPLT12: | |
2310 | case R_390_GOTPLT16: | |
2311 | case R_390_GOTPLT20: | |
2312 | case R_390_GOTPLT32: | |
2313 | case R_390_GOTPLT64: | |
2314 | case R_390_GOTPLTENT: | |
2315 | case R_390_GOT12: | |
2316 | case R_390_GOT16: | |
2317 | case R_390_GOT20: | |
2318 | case R_390_GOT32: | |
2319 | case R_390_GOT64: | |
2320 | case R_390_GOTENT: | |
2321 | { | |
2322 | /* Write the PLT slot address into the GOT slot. */ | |
2323 | bfd_put_64 (output_bfd, relocation, | |
2324 | htab->elf.sgot->contents + | |
2325 | local_got_offsets[r_symndx]); | |
2326 | relocation = (local_got_offsets[r_symndx] + | |
2327 | htab->elf.sgot->output_offset); | |
2328 | ||
2329 | if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT) | |
2330 | relocation += htab->elf.sgot->output_section->vma; | |
2331 | break; | |
2332 | } | |
2333 | default: | |
2334 | break; | |
2335 | } | |
2336 | /* The output section is needed later in | |
2337 | finish_dynamic_section when creating the dynamic | |
2338 | relocation. */ | |
2339 | local_plt[r_symndx].sec = sec; | |
2340 | goto do_relocation; | |
2341 | } | |
2342 | else | |
2343 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
a85d7ed0 NC |
2344 | } |
2345 | else | |
2346 | { | |
560e09e9 | 2347 | bfd_boolean warned ATTRIBUTE_UNUSED; |
0451c93c | 2348 | |
b2a8e766 AM |
2349 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2350 | r_symndx, symtab_hdr, sym_hashes, | |
2351 | h, sec, relocation, | |
2352 | unresolved_reloc, warned); | |
a85d7ed0 NC |
2353 | } |
2354 | ||
dbaa2011 | 2355 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 2356 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 2357 | rel, 1, relend, howto, 0, contents); |
ab96bf03 AM |
2358 | |
2359 | if (info->relocatable) | |
2360 | continue; | |
2361 | ||
a85d7ed0 NC |
2362 | switch (r_type) |
2363 | { | |
5236c819 MS |
2364 | case R_390_GOTPLT12: |
2365 | case R_390_GOTPLT16: | |
bd1ea41b | 2366 | case R_390_GOTPLT20: |
5236c819 MS |
2367 | case R_390_GOTPLT32: |
2368 | case R_390_GOTPLT64: | |
2369 | case R_390_GOTPLTENT: | |
2370 | /* There are three cases for a GOTPLT relocation. 1) The | |
2371 | relocation is against the jump slot entry of a plt that | |
2372 | will get emitted to the output file. 2) The relocation | |
2373 | is against the jump slot of a plt entry that has been | |
2374 | removed. elf_s390_adjust_gotplt has created a GOT entry | |
2375 | as replacement. 3) The relocation is against a local symbol. | |
2376 | Cases 2) and 3) are the same as the GOT relocation code | |
2377 | so we just have to test for case 1 and fall through for | |
2378 | the other two. */ | |
2379 | if (h != NULL && h->plt.offset != (bfd_vma) -1) | |
2380 | { | |
2381 | bfd_vma plt_index; | |
2382 | ||
470b557a AK |
2383 | if (s390_is_ifunc_symbol_p (h)) |
2384 | { | |
2385 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; | |
2386 | relocation = (plt_index * GOT_ENTRY_SIZE + | |
2387 | htab->elf.igotplt->output_offset); | |
2388 | if (r_type == R_390_GOTPLTENT) | |
2389 | relocation += htab->elf.igotplt->output_section->vma; | |
2390 | } | |
2391 | else | |
2392 | { | |
2393 | /* Calc. index no. | |
2394 | Current offset - size first entry / entry size. */ | |
2395 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / | |
2396 | PLT_ENTRY_SIZE; | |
2397 | ||
2398 | /* Offset in GOT is PLT index plus GOT headers(3) | |
2399 | times 4, addr & GOT addr. */ | |
2400 | relocation = (plt_index + 3) * GOT_ENTRY_SIZE; | |
2401 | if (r_type == R_390_GOTPLTENT) | |
2402 | relocation += htab->elf.sgot->output_section->vma; | |
2403 | } | |
5236c819 | 2404 | unresolved_reloc = FALSE; |
5236c819 MS |
2405 | break; |
2406 | } | |
2407 | /* Fall through. */ | |
2408 | ||
947216bf AM |
2409 | case R_390_GOT12: |
2410 | case R_390_GOT16: | |
bd1ea41b | 2411 | case R_390_GOT20: |
947216bf AM |
2412 | case R_390_GOT32: |
2413 | case R_390_GOT64: | |
2414 | case R_390_GOTENT: | |
2415 | /* Relocation is to the entry for this symbol in the global | |
2416 | offset table. */ | |
470b557a | 2417 | if (base_got == NULL) |
0451c93c | 2418 | abort (); |
a85d7ed0 | 2419 | |
947216bf AM |
2420 | if (h != NULL) |
2421 | { | |
b34976b6 | 2422 | bfd_boolean dyn; |
a85d7ed0 | 2423 | |
947216bf | 2424 | off = h->got.offset; |
0451c93c | 2425 | dyn = htab->elf.dynamic_sections_created; |
470b557a AK |
2426 | |
2427 | if (s390_is_ifunc_symbol_p (h)) | |
2428 | { | |
2429 | BFD_ASSERT (h->plt.offset != (bfd_vma) -1); | |
2430 | if (off == (bfd_vma)-1) | |
2431 | { | |
2432 | /* No explicit GOT usage so redirect to the | |
2433 | got.iplt slot. */ | |
2434 | base_got = htab->elf.igotplt; | |
2435 | off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE; | |
2436 | } | |
2437 | else | |
2438 | { | |
2439 | /* Explicit GOT slots must contain the address | |
2440 | of the PLT slot. This will be handled in | |
2441 | finish_dynamic_symbol. */ | |
2442 | } | |
2443 | } | |
2444 | else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
2445 | || (info->shared | |
2446 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
2447 | || (ELF_ST_VISIBILITY (h->other) | |
2448 | && h->root.type == bfd_link_hash_undefweak)) | |
947216bf AM |
2449 | { |
2450 | /* This is actually a static link, or it is a | |
2451 | -Bsymbolic link and the symbol is defined | |
2452 | locally, or the symbol was forced to be local | |
2453 | because of a version file. We must initialize | |
2454 | this entry in the global offset table. Since the | |
2455 | offset must always be a multiple of 2, we use the | |
2456 | least significant bit to record whether we have | |
2457 | initialized it already. | |
2458 | ||
2459 | When doing a dynamic link, we create a .rel.got | |
2460 | relocation entry to initialize the value. This | |
2461 | is done in the finish_dynamic_symbol routine. */ | |
2462 | if ((off & 1) != 0) | |
2463 | off &= ~1; | |
2464 | else | |
2465 | { | |
a85d7ed0 | 2466 | bfd_put_64 (output_bfd, relocation, |
470b557a | 2467 | base_got->contents + off); |
947216bf AM |
2468 | h->got.offset |= 1; |
2469 | } | |
2470 | } | |
0451c93c | 2471 | else |
b34976b6 | 2472 | unresolved_reloc = FALSE; |
947216bf AM |
2473 | } |
2474 | else | |
2475 | { | |
0451c93c MS |
2476 | if (local_got_offsets == NULL) |
2477 | abort (); | |
a85d7ed0 | 2478 | |
947216bf | 2479 | off = local_got_offsets[r_symndx]; |
a85d7ed0 | 2480 | |
947216bf AM |
2481 | /* The offset must always be a multiple of 8. We use |
2482 | the least significant bit to record whether we have | |
2483 | already generated the necessary reloc. */ | |
2484 | if ((off & 1) != 0) | |
2485 | off &= ~1; | |
2486 | else | |
2487 | { | |
2488 | bfd_put_64 (output_bfd, relocation, | |
f41345a7 | 2489 | htab->elf.sgot->contents + off); |
a85d7ed0 | 2490 | |
947216bf AM |
2491 | if (info->shared) |
2492 | { | |
2493 | asection *s; | |
2494 | Elf_Internal_Rela outrel; | |
2495 | bfd_byte *loc; | |
a85d7ed0 | 2496 | |
f41345a7 | 2497 | s = htab->elf.srelgot; |
947216bf | 2498 | if (s == NULL) |
0451c93c | 2499 | abort (); |
a85d7ed0 | 2500 | |
f41345a7 AK |
2501 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2502 | + htab->elf.sgot->output_offset | |
947216bf AM |
2503 | + off); |
2504 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); | |
a85d7ed0 | 2505 | outrel.r_addend = relocation; |
947216bf AM |
2506 | loc = s->contents; |
2507 | loc += s->reloc_count++ * sizeof (Elf64_External_Rela); | |
2508 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2509 | } | |
a85d7ed0 | 2510 | |
947216bf AM |
2511 | local_got_offsets[r_symndx] |= 1; |
2512 | } | |
2513 | } | |
a85d7ed0 | 2514 | |
0451c93c MS |
2515 | if (off >= (bfd_vma) -2) |
2516 | abort (); | |
2517 | ||
470b557a | 2518 | relocation = base_got->output_offset + off; |
0451c93c | 2519 | |
ae9a127f NC |
2520 | /* For @GOTENT the relocation is against the offset between |
2521 | the instruction and the symbols entry in the GOT and not | |
2522 | between the start of the GOT and the symbols entry. We | |
2523 | add the vma of the GOT to get the correct value. */ | |
5236c819 MS |
2524 | if ( r_type == R_390_GOTENT |
2525 | || r_type == R_390_GOTPLTENT) | |
470b557a | 2526 | relocation += base_got->output_section->vma; |
a85d7ed0 | 2527 | |
947216bf | 2528 | break; |
99c79b2e | 2529 | |
5236c819 MS |
2530 | case R_390_GOTOFF16: |
2531 | case R_390_GOTOFF32: | |
2532 | case R_390_GOTOFF64: | |
947216bf AM |
2533 | /* Relocation is relative to the start of the global offset |
2534 | table. */ | |
a85d7ed0 | 2535 | |
947216bf AM |
2536 | /* Note that sgot->output_offset is not involved in this |
2537 | calculation. We always want the start of .got. If we | |
2538 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
2539 | permitted by the ABI, we might have to change this | |
2540 | calculation. */ | |
f41345a7 | 2541 | relocation -= htab->elf.sgot->output_section->vma; |
947216bf | 2542 | break; |
a85d7ed0 | 2543 | |
947216bf | 2544 | case R_390_GOTPC: |
a85d7ed0 | 2545 | case R_390_GOTPCDBL: |
947216bf | 2546 | /* Use global offset table as symbol value. */ |
f41345a7 | 2547 | relocation = htab->elf.sgot->output_section->vma; |
b34976b6 | 2548 | unresolved_reloc = FALSE; |
947216bf | 2549 | break; |
a85d7ed0 | 2550 | |
947216bf AM |
2551 | case R_390_PLT16DBL: |
2552 | case R_390_PLT32: | |
2553 | case R_390_PLT32DBL: | |
2554 | case R_390_PLT64: | |
2555 | /* Relocation is to the entry for this symbol in the | |
2556 | procedure linkage table. */ | |
a85d7ed0 | 2557 | |
947216bf AM |
2558 | /* Resolve a PLT32 reloc against a local symbol directly, |
2559 | without using the procedure linkage table. */ | |
2560 | if (h == NULL) | |
2561 | break; | |
a85d7ed0 | 2562 | |
947216bf | 2563 | if (h->plt.offset == (bfd_vma) -1 |
470b557a | 2564 | || (htab->elf.splt == NULL && htab->elf.iplt == NULL)) |
947216bf AM |
2565 | { |
2566 | /* We didn't make a PLT entry for this symbol. This | |
2567 | happens when statically linking PIC code, or when | |
2568 | using -Bsymbolic. */ | |
2569 | break; | |
2570 | } | |
470b557a AK |
2571 | if (s390_is_ifunc_symbol_p (h)) |
2572 | relocation = (htab->elf.iplt->output_section->vma | |
2573 | + htab->elf.iplt->output_offset | |
2574 | + h->plt.offset); | |
2575 | else | |
2576 | relocation = (htab->elf.splt->output_section->vma | |
2577 | + htab->elf.splt->output_offset | |
2578 | + h->plt.offset); | |
b34976b6 | 2579 | unresolved_reloc = FALSE; |
26e41594 | 2580 | break; |
5236c819 MS |
2581 | |
2582 | case R_390_PLTOFF16: | |
2583 | case R_390_PLTOFF32: | |
2584 | case R_390_PLTOFF64: | |
26e41594 AM |
2585 | /* Relocation is to the entry for this symbol in the |
2586 | procedure linkage table relative to the start of the GOT. */ | |
5236c819 MS |
2587 | |
2588 | /* For local symbols or if we didn't make a PLT entry for | |
2589 | this symbol resolve the symbol directly. */ | |
26e41594 | 2590 | if ( h == NULL |
5236c819 | 2591 | || h->plt.offset == (bfd_vma) -1 |
f41345a7 | 2592 | || htab->elf.splt == NULL) |
5236c819 | 2593 | { |
f41345a7 | 2594 | relocation -= htab->elf.sgot->output_section->vma; |
5236c819 MS |
2595 | break; |
2596 | } | |
2597 | ||
470b557a AK |
2598 | if (s390_is_ifunc_symbol_p (h)) |
2599 | relocation = (htab->elf.iplt->output_section->vma | |
2600 | + htab->elf.iplt->output_offset | |
2601 | + h->plt.offset | |
2602 | - htab->elf.sgot->output_section->vma); | |
2603 | else | |
2604 | relocation = (htab->elf.splt->output_section->vma | |
2605 | + htab->elf.splt->output_offset | |
2606 | + h->plt.offset | |
2607 | - htab->elf.sgot->output_section->vma); | |
5236c819 | 2608 | unresolved_reloc = FALSE; |
947216bf AM |
2609 | break; |
2610 | ||
2611 | case R_390_8: | |
2612 | case R_390_16: | |
2613 | case R_390_32: | |
2614 | case R_390_64: | |
2615 | case R_390_PC16: | |
2616 | case R_390_PC16DBL: | |
2617 | case R_390_PC32: | |
a85d7ed0 | 2618 | case R_390_PC32DBL: |
947216bf | 2619 | case R_390_PC64: |
470b557a AK |
2620 | |
2621 | if (h != NULL | |
2622 | && s390_is_ifunc_symbol_p (h) | |
2623 | && h->def_regular) | |
2624 | { | |
2625 | if (!info->shared || !h->non_got_ref) | |
2626 | { | |
2627 | /* For a non-shared object STT_GNU_IFUNC symbol must | |
2628 | go through PLT. */ | |
2629 | relocation = (htab->elf.iplt->output_section->vma | |
2630 | + htab->elf.iplt->output_offset | |
2631 | + h ->plt.offset); | |
2632 | goto do_relocation; | |
2633 | } | |
2634 | else | |
2635 | { | |
2636 | /* For shared objects a runtime relocation is needed. */ | |
2637 | ||
2638 | Elf_Internal_Rela outrel; | |
2639 | asection *sreloc; | |
2640 | ||
2641 | /* Need a dynamic relocation to get the real function | |
2642 | address. */ | |
2643 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
2644 | info, | |
2645 | input_section, | |
2646 | rel->r_offset); | |
2647 | if (outrel.r_offset == (bfd_vma) -1 | |
2648 | || outrel.r_offset == (bfd_vma) -2) | |
2649 | abort (); | |
2650 | ||
2651 | outrel.r_offset += (input_section->output_section->vma | |
2652 | + input_section->output_offset); | |
2653 | ||
2654 | if (h->dynindx == -1 | |
2655 | || h->forced_local | |
2656 | || info->executable) | |
2657 | { | |
2658 | /* This symbol is resolved locally. */ | |
2659 | outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE); | |
2660 | outrel.r_addend = (h->root.u.def.value | |
2661 | + h->root.u.def.section->output_section->vma | |
2662 | + h->root.u.def.section->output_offset); | |
2663 | } | |
2664 | else | |
2665 | { | |
2666 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); | |
2667 | outrel.r_addend = 0; | |
2668 | } | |
2669 | ||
2670 | sreloc = htab->elf.irelifunc; | |
2671 | elf_append_rela (output_bfd, sreloc, &outrel); | |
2672 | ||
2673 | /* If this reloc is against an external symbol, we | |
2674 | do not want to fiddle with the addend. Otherwise, | |
2675 | we need to include the symbol value so that it | |
2676 | becomes an addend for the dynamic reloc. For an | |
2677 | internal symbol, we have updated addend. */ | |
2678 | continue; | |
2679 | } | |
2680 | } | |
2681 | ||
b1e24c02 | 2682 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
2683 | break; |
2684 | ||
947216bf | 2685 | if ((info->shared |
82058a73 MS |
2686 | && (h == NULL |
2687 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2688 | || h->root.type != bfd_link_hash_undefweak) | |
0451c93c MS |
2689 | && ((r_type != R_390_PC16 |
2690 | && r_type != R_390_PC16DBL | |
2691 | && r_type != R_390_PC32 | |
2692 | && r_type != R_390_PC32DBL | |
2693 | && r_type != R_390_PC64) | |
8c21ca21 | 2694 | || !SYMBOL_CALLS_LOCAL (info, h))) |
64285810 MS |
2695 | || (ELIMINATE_COPY_RELOCS |
2696 | && !info->shared | |
0451c93c MS |
2697 | && h != NULL |
2698 | && h->dynindx != -1 | |
f5385ebf AM |
2699 | && !h->non_got_ref |
2700 | && ((h->def_dynamic | |
2701 | && !h->def_regular) | |
0451c93c MS |
2702 | || h->root.type == bfd_link_hash_undefweak |
2703 | || h->root.type == bfd_link_hash_undefined))) | |
947216bf AM |
2704 | { |
2705 | Elf_Internal_Rela outrel; | |
b34976b6 | 2706 | bfd_boolean skip, relocate; |
0451c93c | 2707 | asection *sreloc; |
947216bf | 2708 | bfd_byte *loc; |
a85d7ed0 | 2709 | |
947216bf AM |
2710 | /* When generating a shared object, these relocations |
2711 | are copied into the output file to be resolved at run | |
2712 | time. */ | |
b34976b6 AM |
2713 | skip = FALSE; |
2714 | relocate = FALSE; | |
a85d7ed0 | 2715 | |
c629eae0 JJ |
2716 | outrel.r_offset = |
2717 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2718 | rel->r_offset); | |
2719 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2720 | skip = TRUE; |
0bb2d96a | 2721 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2722 | skip = TRUE, relocate = TRUE; |
a85d7ed0 | 2723 | |
947216bf AM |
2724 | outrel.r_offset += (input_section->output_section->vma |
2725 | + input_section->output_offset); | |
a85d7ed0 | 2726 | |
947216bf | 2727 | if (skip) |
0bb2d96a | 2728 | memset (&outrel, 0, sizeof outrel); |
947216bf | 2729 | else if (h != NULL |
0451c93c MS |
2730 | && h->dynindx != -1 |
2731 | && (r_type == R_390_PC16 | |
2732 | || r_type == R_390_PC16DBL | |
2733 | || r_type == R_390_PC32 | |
2734 | || r_type == R_390_PC32DBL | |
2735 | || r_type == R_390_PC64 | |
2736 | || !info->shared | |
8c21ca21 | 2737 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 2738 | || !h->def_regular)) |
947216bf AM |
2739 | { |
2740 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); | |
27018c3f | 2741 | outrel.r_addend = rel->r_addend; |
947216bf AM |
2742 | } |
2743 | else | |
2744 | { | |
0451c93c | 2745 | /* This symbol is local, or marked to become local. */ |
90ced0dd | 2746 | outrel.r_addend = relocation + rel->r_addend; |
b5727d75 MS |
2747 | if (r_type == R_390_64) |
2748 | { | |
2749 | relocate = TRUE; | |
2750 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); | |
b5727d75 MS |
2751 | } |
2752 | else | |
2753 | { | |
2754 | long sindx; | |
2755 | ||
90ced0dd | 2756 | if (bfd_is_abs_section (sec)) |
b5727d75 MS |
2757 | sindx = 0; |
2758 | else if (sec == NULL || sec->owner == NULL) | |
2759 | { | |
2760 | bfd_set_error(bfd_error_bad_value); | |
2761 | return FALSE; | |
2762 | } | |
2763 | else | |
2764 | { | |
2765 | asection *osec; | |
2766 | ||
2767 | osec = sec->output_section; | |
2768 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
2769 | |
2770 | if (sindx == 0) | |
2771 | { | |
2772 | osec = htab->elf.text_index_section; | |
2773 | sindx = elf_section_data (osec)->dynindx; | |
2774 | } | |
2775 | BFD_ASSERT (sindx != 0); | |
90ced0dd MS |
2776 | |
2777 | /* We are turning this relocation into one | |
2778 | against a section symbol, so subtract out | |
2779 | the output section's address but not the | |
2780 | offset of the input section in the output | |
2781 | section. */ | |
90ced0dd | 2782 | outrel.r_addend -= osec->vma; |
b5727d75 MS |
2783 | } |
2784 | outrel.r_info = ELF64_R_INFO (sindx, r_type); | |
b5727d75 | 2785 | } |
0451c93c | 2786 | } |
a85d7ed0 | 2787 | |
0451c93c MS |
2788 | sreloc = elf_section_data (input_section)->sreloc; |
2789 | if (sreloc == NULL) | |
2790 | abort (); | |
2791 | ||
947216bf AM |
2792 | loc = sreloc->contents; |
2793 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
2794 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
a85d7ed0 | 2795 | |
947216bf AM |
2796 | /* If this reloc is against an external symbol, we do |
2797 | not want to fiddle with the addend. Otherwise, we | |
2798 | need to include the symbol value so that it becomes | |
2799 | an addend for the dynamic reloc. */ | |
2800 | if (! relocate) | |
2801 | continue; | |
2802 | } | |
a85d7ed0 | 2803 | |
947216bf | 2804 | break; |
a85d7ed0 | 2805 | |
69fc87f1 MS |
2806 | /* Relocations for tls literal pool entries. */ |
2807 | case R_390_TLS_IE64: | |
2808 | if (info->shared) | |
2809 | { | |
2810 | Elf_Internal_Rela outrel; | |
2811 | asection *sreloc; | |
2812 | bfd_byte *loc; | |
2813 | ||
2814 | outrel.r_offset = rel->r_offset | |
2815 | + input_section->output_section->vma | |
2816 | + input_section->output_offset; | |
2817 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); | |
2818 | sreloc = elf_section_data (input_section)->sreloc; | |
2819 | if (sreloc == NULL) | |
2820 | abort (); | |
2821 | loc = sreloc->contents; | |
2822 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
2823 | bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc); | |
2824 | } | |
ae9a127f | 2825 | /* Fall through. */ |
69fc87f1 MS |
2826 | |
2827 | case R_390_TLS_GD64: | |
2828 | case R_390_TLS_GOTIE64: | |
2829 | r_type = elf_s390_tls_transition (info, r_type, h == NULL); | |
2830 | tls_type = GOT_UNKNOWN; | |
2831 | if (h == NULL && local_got_offsets) | |
2832 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
2833 | else if (h != NULL) | |
2834 | { | |
2835 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
2836 | if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE) | |
2837 | r_type = R_390_TLS_LE64; | |
2838 | } | |
2839 | if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE) | |
2840 | r_type = R_390_TLS_IE64; | |
2841 | ||
2842 | if (r_type == R_390_TLS_LE64) | |
2843 | { | |
2844 | /* This relocation gets optimized away by the local exec | |
2845 | access optimization. */ | |
2846 | BFD_ASSERT (! unresolved_reloc); | |
2847 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
2848 | contents + rel->r_offset); | |
2849 | continue; | |
2850 | } | |
2851 | ||
f41345a7 | 2852 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2853 | abort (); |
2854 | ||
2855 | if (h != NULL) | |
2856 | off = h->got.offset; | |
2857 | else | |
2858 | { | |
2859 | if (local_got_offsets == NULL) | |
2860 | abort (); | |
2861 | ||
2862 | off = local_got_offsets[r_symndx]; | |
2863 | } | |
2864 | ||
2865 | emit_tls_relocs: | |
2866 | ||
2867 | if ((off & 1) != 0) | |
2868 | off &= ~1; | |
26e41594 | 2869 | else |
69fc87f1 MS |
2870 | { |
2871 | Elf_Internal_Rela outrel; | |
2872 | bfd_byte *loc; | |
2873 | int dr_type, indx; | |
2874 | ||
f41345a7 | 2875 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2876 | abort (); |
2877 | ||
f41345a7 AK |
2878 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2879 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2880 | |
2881 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
2882 | if (r_type == R_390_TLS_GD64) | |
2883 | dr_type = R_390_TLS_DTPMOD; | |
2884 | else | |
2885 | dr_type = R_390_TLS_TPOFF; | |
2886 | if (dr_type == R_390_TLS_TPOFF && indx == 0) | |
2887 | outrel.r_addend = relocation - dtpoff_base (info); | |
2888 | else | |
2889 | outrel.r_addend = 0; | |
2890 | outrel.r_info = ELF64_R_INFO (indx, dr_type); | |
f41345a7 AK |
2891 | loc = htab->elf.srelgot->contents; |
2892 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
2893 | * sizeof (Elf64_External_Rela); |
2894 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2895 | ||
2896 | if (r_type == R_390_TLS_GD64) | |
2897 | { | |
2898 | if (indx == 0) | |
2899 | { | |
2900 | BFD_ASSERT (! unresolved_reloc); | |
2901 | bfd_put_64 (output_bfd, | |
2902 | relocation - dtpoff_base (info), | |
f41345a7 | 2903 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2904 | } |
2905 | else | |
2906 | { | |
2907 | outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF); | |
2908 | outrel.r_offset += GOT_ENTRY_SIZE; | |
2909 | outrel.r_addend = 0; | |
f41345a7 | 2910 | htab->elf.srelgot->reloc_count++; |
69fc87f1 MS |
2911 | loc += sizeof (Elf64_External_Rela); |
2912 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2913 | } | |
2914 | } | |
2915 | ||
2916 | if (h != NULL) | |
2917 | h->got.offset |= 1; | |
2918 | else | |
2919 | local_got_offsets[r_symndx] |= 1; | |
2920 | } | |
2921 | ||
2922 | if (off >= (bfd_vma) -2) | |
2923 | abort (); | |
2924 | if (r_type == ELF64_R_TYPE (rel->r_info)) | |
2925 | { | |
f41345a7 | 2926 | relocation = htab->elf.sgot->output_offset + off; |
69fc87f1 | 2927 | if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT) |
f41345a7 | 2928 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
2929 | unresolved_reloc = FALSE; |
2930 | } | |
2931 | else | |
2932 | { | |
f41345a7 | 2933 | bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off, |
69fc87f1 MS |
2934 | contents + rel->r_offset); |
2935 | continue; | |
2936 | } | |
2937 | break; | |
2938 | ||
2939 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 2940 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
2941 | case R_390_TLS_IEENT: |
2942 | if (h == NULL) | |
2943 | { | |
2944 | if (local_got_offsets == NULL) | |
2945 | abort(); | |
2946 | off = local_got_offsets[r_symndx]; | |
2947 | if (info->shared) | |
2948 | goto emit_tls_relocs; | |
2949 | } | |
2950 | else | |
2951 | { | |
2952 | off = h->got.offset; | |
2953 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
2954 | if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE) | |
2955 | goto emit_tls_relocs; | |
2956 | } | |
2957 | ||
f41345a7 | 2958 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2959 | abort (); |
2960 | ||
2961 | BFD_ASSERT (! unresolved_reloc); | |
2962 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
f41345a7 AK |
2963 | htab->elf.sgot->contents + off); |
2964 | relocation = htab->elf.sgot->output_offset + off; | |
69fc87f1 | 2965 | if (r_type == R_390_TLS_IEENT) |
f41345a7 | 2966 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
2967 | unresolved_reloc = FALSE; |
2968 | break; | |
2969 | ||
2970 | case R_390_TLS_LDM64: | |
2971 | if (! info->shared) | |
2972 | /* The literal pool entry this relocation refers to gets ignored | |
2973 | by the optimized code of the local exec model. Do nothing | |
2974 | and the value will turn out zero. */ | |
2975 | continue; | |
2976 | ||
f41345a7 | 2977 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2978 | abort (); |
2979 | ||
2980 | off = htab->tls_ldm_got.offset; | |
2981 | if (off & 1) | |
2982 | off &= ~1; | |
2983 | else | |
2984 | { | |
2985 | Elf_Internal_Rela outrel; | |
2986 | bfd_byte *loc; | |
2987 | ||
f41345a7 | 2988 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2989 | abort (); |
2990 | ||
f41345a7 AK |
2991 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2992 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2993 | |
2994 | bfd_put_64 (output_bfd, 0, | |
f41345a7 | 2995 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2996 | outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD); |
2997 | outrel.r_addend = 0; | |
f41345a7 AK |
2998 | loc = htab->elf.srelgot->contents; |
2999 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
3000 | * sizeof (Elf64_External_Rela); |
3001 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
3002 | htab->tls_ldm_got.offset |= 1; | |
3003 | } | |
f41345a7 | 3004 | relocation = htab->elf.sgot->output_offset + off; |
26e41594 | 3005 | unresolved_reloc = FALSE; |
69fc87f1 MS |
3006 | break; |
3007 | ||
3008 | case R_390_TLS_LE64: | |
3009 | if (info->shared) | |
3010 | { | |
3011 | /* Linking a shared library with non-fpic code requires | |
3012 | a R_390_TLS_TPOFF relocation. */ | |
3013 | Elf_Internal_Rela outrel; | |
3014 | asection *sreloc; | |
3015 | bfd_byte *loc; | |
3016 | int indx; | |
3017 | ||
3018 | outrel.r_offset = rel->r_offset | |
3019 | + input_section->output_section->vma | |
3020 | + input_section->output_offset; | |
3021 | if (h != NULL && h->dynindx != -1) | |
3022 | indx = h->dynindx; | |
3023 | else | |
3024 | indx = 0; | |
3025 | outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF); | |
3026 | if (indx == 0) | |
3027 | outrel.r_addend = relocation - dtpoff_base (info); | |
3028 | else | |
3029 | outrel.r_addend = 0; | |
3030 | sreloc = elf_section_data (input_section)->sreloc; | |
3031 | if (sreloc == NULL) | |
3032 | abort (); | |
3033 | loc = sreloc->contents; | |
3034 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
3035 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
3036 | } | |
3037 | else | |
3038 | { | |
3039 | BFD_ASSERT (! unresolved_reloc); | |
3040 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
3041 | contents + rel->r_offset); | |
3042 | } | |
3043 | continue; | |
3044 | ||
3045 | case R_390_TLS_LDO64: | |
de8bee76 | 3046 | if (info->shared || (input_section->flags & SEC_DEBUGGING)) |
69fc87f1 MS |
3047 | relocation -= dtpoff_base (info); |
3048 | else | |
3049 | /* When converting LDO to LE, we must negate. */ | |
3050 | relocation = -tpoff (info, relocation); | |
3051 | break; | |
3052 | ||
3053 | /* Relocations for tls instructions. */ | |
3054 | case R_390_TLS_LOAD: | |
3055 | case R_390_TLS_GDCALL: | |
3056 | case R_390_TLS_LDCALL: | |
3057 | tls_type = GOT_UNKNOWN; | |
3058 | if (h == NULL && local_got_offsets) | |
3059 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
3060 | else if (h != NULL) | |
3061 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
3062 | ||
3063 | if (tls_type == GOT_TLS_GD) | |
3064 | continue; | |
3065 | ||
3066 | if (r_type == R_390_TLS_LOAD) | |
3067 | { | |
3068 | if (!info->shared && (h == NULL || h->dynindx == -1)) | |
3069 | { | |
3070 | /* IE->LE transition. Four valid cases: | |
3071 | lg %rx,(0,%ry) -> sllg %rx,%ry,0 | |
3072 | lg %rx,(%ry,0) -> sllg %rx,%ry,0 | |
3073 | lg %rx,(%ry,%r12) -> sllg %rx,%ry,0 | |
3074 | lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */ | |
3075 | unsigned int insn0, insn1, ry; | |
3076 | ||
3077 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3078 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
3079 | if (insn1 != 0x0004) | |
3080 | invalid_tls_insn (input_bfd, input_section, rel); | |
3081 | ry = 0; | |
3082 | if ((insn0 & 0xff00f000) == 0xe3000000) | |
3083 | /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */ | |
3084 | ry = (insn0 & 0x000f0000); | |
3085 | else if ((insn0 & 0xff0f0000) == 0xe3000000) | |
3086 | /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */ | |
3087 | ry = (insn0 & 0x0000f000) << 4; | |
3088 | else if ((insn0 & 0xff00f000) == 0xe300c000) | |
3089 | /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */ | |
3090 | ry = (insn0 & 0x000f0000); | |
3091 | else if ((insn0 & 0xff0f0000) == 0xe30c0000) | |
3092 | /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */ | |
3093 | ry = (insn0 & 0x0000f000) << 4; | |
3094 | else | |
3095 | invalid_tls_insn (input_bfd, input_section, rel); | |
3096 | insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry; | |
3097 | insn1 = 0x000d; | |
3098 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
3099 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
3100 | } | |
3101 | } | |
3102 | else if (r_type == R_390_TLS_GDCALL) | |
3103 | { | |
3104 | unsigned int insn0, insn1; | |
3105 | ||
3106 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3107 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
3108 | if ((insn0 & 0xffff0000) != 0xc0e50000) | |
3109 | invalid_tls_insn (input_bfd, input_section, rel); | |
3110 | if (!info->shared && (h == NULL || h->dynindx == -1)) | |
3111 | { | |
3112 | /* GD->LE transition. | |
3113 | brasl %r14,__tls_get_addr@plt -> brcl 0,. */ | |
3114 | insn0 = 0xc0040000; | |
3115 | insn1 = 0x0000; | |
3116 | } | |
3117 | else | |
3118 | { | |
3119 | /* GD->IE transition. | |
3120 | brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */ | |
3121 | insn0 = 0xe322c000; | |
3122 | insn1 = 0x0004; | |
3123 | } | |
3124 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
3125 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
3126 | } | |
3127 | else if (r_type == R_390_TLS_LDCALL) | |
3128 | { | |
3129 | if (!info->shared) | |
3130 | { | |
3131 | unsigned int insn0, insn1; | |
3132 | ||
3133 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3134 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
3135 | if ((insn0 & 0xffff0000) != 0xc0e50000) | |
3136 | invalid_tls_insn (input_bfd, input_section, rel); | |
3137 | /* LD->LE transition. | |
3138 | brasl %r14,__tls_get_addr@plt -> brcl 0,. */ | |
3139 | insn0 = 0xc0040000; | |
3140 | insn1 = 0x0000; | |
3141 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
3142 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
3143 | } | |
3144 | } | |
3145 | continue; | |
3146 | ||
947216bf AM |
3147 | default: |
3148 | break; | |
3149 | } | |
a85d7ed0 | 3150 | |
239e1f3a AM |
3151 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3152 | because such sections are not SEC_ALLOC and thus ld.so will | |
3153 | not process them. */ | |
0451c93c | 3154 | if (unresolved_reloc |
239e1f3a | 3155 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
3156 | && h->def_dynamic) |
3157 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
3158 | rel->r_offset) != (bfd_vma) -1) | |
0451c93c | 3159 | (*_bfd_error_handler) |
843fe662 | 3160 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
3161 | input_bfd, |
3162 | input_section, | |
0451c93c | 3163 | (long) rel->r_offset, |
843fe662 | 3164 | howto->name, |
0451c93c MS |
3165 | h->root.root.string); |
3166 | ||
470b557a AK |
3167 | do_relocation: |
3168 | ||
bd1ea41b MS |
3169 | if (r_type == R_390_20 |
3170 | || r_type == R_390_GOT20 | |
3171 | || r_type == R_390_GOTPLT20 | |
3172 | || r_type == R_390_TLS_GOTIE20) | |
3173 | { | |
3174 | relocation += rel->r_addend; | |
3175 | relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12; | |
3176 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3177 | contents, rel->r_offset, | |
3178 | relocation, 0); | |
3179 | } | |
3180 | else | |
3181 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
a85d7ed0 NC |
3182 | contents, rel->r_offset, |
3183 | relocation, rel->r_addend); | |
3184 | ||
3185 | if (r != bfd_reloc_ok) | |
3186 | { | |
0451c93c | 3187 | const char *name; |
ec338859 | 3188 | |
0451c93c MS |
3189 | if (h != NULL) |
3190 | name = h->root.root.string; | |
3191 | else | |
a85d7ed0 | 3192 | { |
0451c93c MS |
3193 | name = bfd_elf_string_from_elf_section (input_bfd, |
3194 | symtab_hdr->sh_link, | |
3195 | sym->st_name); | |
3196 | if (name == NULL) | |
b34976b6 | 3197 | return FALSE; |
0451c93c MS |
3198 | if (*name == '\0') |
3199 | name = bfd_section_name (input_bfd, sec); | |
3200 | } | |
ec338859 | 3201 | |
0451c93c MS |
3202 | if (r == bfd_reloc_overflow) |
3203 | { | |
ec338859 | 3204 | |
0451c93c | 3205 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f L |
3206 | (info, (h ? &h->root : NULL), name, howto->name, |
3207 | (bfd_vma) 0, input_bfd, input_section, | |
3208 | rel->r_offset))) | |
b34976b6 | 3209 | return FALSE; |
0451c93c MS |
3210 | } |
3211 | else | |
3212 | { | |
3213 | (*_bfd_error_handler) | |
d003868e AM |
3214 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
3215 | input_bfd, input_section, | |
0451c93c | 3216 | (long) rel->r_offset, name, (int) r); |
b34976b6 | 3217 | return FALSE; |
a85d7ed0 NC |
3218 | } |
3219 | } | |
3220 | } | |
3221 | ||
b34976b6 | 3222 | return TRUE; |
a85d7ed0 NC |
3223 | } |
3224 | ||
470b557a AK |
3225 | /* Generate the PLT slots together with the dynamic relocations needed |
3226 | for IFUNC symbols. */ | |
3227 | ||
3228 | static void | |
3229 | elf_s390_finish_ifunc_symbol (bfd *output_bfd, | |
3230 | struct bfd_link_info *info, | |
3231 | struct elf_link_hash_entry *h, | |
3232 | struct elf_s390_link_hash_table *htab, | |
3233 | bfd_vma plt_offset, | |
3234 | bfd_vma resolver_address) | |
3235 | { | |
3236 | bfd_vma plt_index; | |
3237 | bfd_vma got_offset; | |
3238 | Elf_Internal_Rela rela; | |
3239 | bfd_byte *loc; | |
3240 | asection *plt, *gotplt, *relplt; | |
3241 | ||
3242 | if (htab->elf.iplt == NULL | |
3243 | || htab->elf.igotplt == NULL | |
3244 | || htab->elf.irelplt == NULL) | |
3245 | abort (); | |
3246 | ||
3247 | /* Index of the PLT slot within iplt section. */ | |
3248 | plt_index = plt_offset / PLT_ENTRY_SIZE; | |
3249 | plt = htab->elf.iplt; | |
3250 | /* Offset into the igot.plt section. */ | |
3251 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
3252 | gotplt = htab->elf.igotplt; | |
3253 | relplt = htab->elf.irelplt; | |
3254 | ||
3255 | /* Fill in the blueprint of a PLT. */ | |
3256 | memcpy (plt->contents + plt_offset, elf_s390x_plt_entry, | |
3257 | PLT_ENTRY_SIZE); | |
3258 | ||
3259 | /* Fixup the relative address to the GOT entry */ | |
3260 | bfd_put_32 (output_bfd, | |
3261 | (gotplt->output_section->vma + | |
3262 | gotplt->output_offset + got_offset | |
3263 | - (plt->output_section->vma + | |
3264 | plt->output_offset + | |
3265 | plt_offset))/2, | |
3266 | plt->contents + plt_offset + 2); | |
3267 | /* Fixup the relative branch to PLT 0 */ | |
3268 | bfd_put_32 (output_bfd, - (plt->output_offset + | |
3269 | (PLT_ENTRY_SIZE * plt_index) + 22)/2, | |
3270 | plt->contents + plt_offset + 24); | |
3271 | /* Fixup offset into .rela.plt section. */ | |
3272 | bfd_put_32 (output_bfd, relplt->output_offset + | |
3273 | plt_index * sizeof (Elf64_External_Rela), | |
3274 | plt->contents + plt_offset + 28); | |
3275 | ||
3276 | /* Fill in the entry in the global offset table. | |
3277 | Points to instruction after GOT offset. */ | |
3278 | bfd_put_64 (output_bfd, | |
3279 | (plt->output_section->vma | |
3280 | + plt->output_offset | |
3281 | + plt_offset | |
3282 | + 14), | |
3283 | gotplt->contents + got_offset); | |
3284 | ||
3285 | /* Fill in the entry in the .rela.plt section. */ | |
3286 | rela.r_offset = (gotplt->output_section->vma | |
3287 | + gotplt->output_offset | |
3288 | + got_offset); | |
3289 | ||
3290 | if (!h | |
3291 | || h->dynindx == -1 | |
3292 | || ((info->executable | |
3293 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
3294 | && h->def_regular)) | |
3295 | { | |
3296 | /* The symbol can be locally resolved. */ | |
3297 | rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE); | |
3298 | rela.r_addend = resolver_address; | |
3299 | } | |
3300 | else | |
3301 | { | |
3302 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3303 | rela.r_addend = 0; | |
3304 | } | |
3305 | ||
3306 | loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela); | |
3307 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
3308 | } | |
3309 | ||
3310 | ||
a85d7ed0 NC |
3311 | /* Finish up dynamic symbol handling. We set the contents of various |
3312 | dynamic sections here. */ | |
3313 | ||
b34976b6 | 3314 | static bfd_boolean |
4dfe6ac6 NC |
3315 | elf_s390_finish_dynamic_symbol (bfd *output_bfd, |
3316 | struct bfd_link_info *info, | |
3317 | struct elf_link_hash_entry *h, | |
3318 | Elf_Internal_Sym *sym) | |
a85d7ed0 | 3319 | { |
0451c93c | 3320 | struct elf_s390_link_hash_table *htab; |
470b557a | 3321 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h; |
a85d7ed0 | 3322 | |
0451c93c | 3323 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
3324 | if (htab == NULL) |
3325 | return FALSE; | |
a85d7ed0 NC |
3326 | |
3327 | if (h->plt.offset != (bfd_vma) -1) | |
3328 | { | |
a85d7ed0 | 3329 | bfd_vma plt_index; |
0451c93c MS |
3330 | bfd_vma got_offset; |
3331 | Elf_Internal_Rela rela; | |
947216bf | 3332 | bfd_byte *loc; |
a85d7ed0 NC |
3333 | |
3334 | /* This symbol has an entry in the procedure linkage table. Set | |
947216bf | 3335 | it up. */ |
470b557a AK |
3336 | if (s390_is_ifunc_symbol_p (h)) |
3337 | { | |
3338 | /* If we can resolve the IFUNC symbol locally we generate an | |
3339 | IRELATIVE reloc. */ | |
3340 | elf_s390_finish_ifunc_symbol (output_bfd, info, h, htab, h->plt.offset, | |
3341 | eh->ifunc_resolver_address + | |
3342 | eh->ifunc_resolver_section->output_offset + | |
3343 | eh->ifunc_resolver_section->output_section->vma); | |
3344 | ; | |
3345 | /* Fallthrough. Handling of explicit GOT slots of IFUNC | |
3346 | symbols is below. */ | |
3347 | } | |
3348 | else | |
3349 | { | |
3350 | if (h->dynindx == -1 | |
3351 | || htab->elf.splt == NULL | |
3352 | || htab->elf.sgotplt == NULL | |
3353 | || htab->elf.srelplt == NULL) | |
3354 | abort (); | |
a85d7ed0 | 3355 | |
470b557a AK |
3356 | /* Calc. index no. |
3357 | Current offset - size first entry / entry size. */ | |
3358 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
a85d7ed0 | 3359 | |
470b557a AK |
3360 | /* Offset in GOT is PLT index plus GOT headers(3) times 8, |
3361 | addr & GOT addr. */ | |
3362 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
a85d7ed0 | 3363 | |
470b557a AK |
3364 | /* Fill in the blueprint of a PLT. */ |
3365 | memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry, | |
3366 | PLT_ENTRY_SIZE); | |
3367 | ||
3368 | /* Fixup the relative address to the GOT entry */ | |
3369 | bfd_put_32 (output_bfd, | |
3370 | (htab->elf.sgotplt->output_section->vma + | |
3371 | htab->elf.sgotplt->output_offset + got_offset | |
3372 | - (htab->elf.splt->output_section->vma + | |
3373 | htab->elf.splt->output_offset + | |
3374 | h->plt.offset))/2, | |
3375 | htab->elf.splt->contents + h->plt.offset + 2); | |
3376 | /* Fixup the relative branch to PLT 0 */ | |
3377 | bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE + | |
3378 | (PLT_ENTRY_SIZE * plt_index) + 22)/2, | |
3379 | htab->elf.splt->contents + h->plt.offset + 24); | |
3380 | /* Fixup offset into .rela.plt section. */ | |
3381 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela), | |
3382 | htab->elf.splt->contents + h->plt.offset + 28); | |
3383 | ||
3384 | /* Fill in the entry in the global offset table. | |
3385 | Points to instruction after GOT offset. */ | |
3386 | bfd_put_64 (output_bfd, | |
3387 | (htab->elf.splt->output_section->vma | |
3388 | + htab->elf.splt->output_offset | |
3389 | + h->plt.offset | |
3390 | + 14), | |
3391 | htab->elf.sgotplt->contents + got_offset); | |
3392 | ||
3393 | /* Fill in the entry in the .rela.plt section. */ | |
3394 | rela.r_offset = (htab->elf.sgotplt->output_section->vma | |
3395 | + htab->elf.sgotplt->output_offset | |
3396 | + got_offset); | |
3397 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3398 | rela.r_addend = 0; | |
3399 | loc = htab->elf.srelplt->contents + plt_index * | |
3400 | sizeof (Elf64_External_Rela); | |
3401 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
3402 | ||
3403 | if (!h->def_regular) | |
3404 | { | |
3405 | /* Mark the symbol as undefined, rather than as defined in | |
3406 | the .plt section. Leave the value alone. This is a clue | |
3407 | for the dynamic linker, to make function pointer | |
3408 | comparisons work between an application and shared | |
3409 | library. */ | |
3410 | sym->st_shndx = SHN_UNDEF; | |
3411 | } | |
a85d7ed0 NC |
3412 | } |
3413 | } | |
3414 | ||
69fc87f1 MS |
3415 | if (h->got.offset != (bfd_vma) -1 |
3416 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD | |
3417 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE | |
3418 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT) | |
a85d7ed0 | 3419 | { |
a85d7ed0 | 3420 | Elf_Internal_Rela rela; |
947216bf | 3421 | bfd_byte *loc; |
a85d7ed0 NC |
3422 | |
3423 | /* This symbol has an entry in the global offset table. Set it | |
947216bf | 3424 | up. */ |
f41345a7 | 3425 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
0451c93c | 3426 | abort (); |
a85d7ed0 | 3427 | |
f41345a7 AK |
3428 | rela.r_offset = (htab->elf.sgot->output_section->vma |
3429 | + htab->elf.sgot->output_offset | |
dc810e39 | 3430 | + (h->got.offset &~ (bfd_vma) 1)); |
a85d7ed0 | 3431 | |
470b557a AK |
3432 | if (h->def_regular && s390_is_ifunc_symbol_p (h)) |
3433 | { | |
3434 | if (info->shared) | |
3435 | { | |
3436 | /* An explicit GOT slot usage needs GLOB_DAT. If the | |
3437 | symbol references local the implicit got.iplt slot | |
3438 | will be used and the IRELATIVE reloc has been created | |
3439 | above. */ | |
3440 | goto do_glob_dat; | |
3441 | } | |
3442 | else | |
3443 | { | |
3444 | /* For non-shared objects explicit GOT slots must be | |
3445 | filled with the PLT slot address for pointer | |
3446 | equality reasons. */ | |
3447 | bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma | |
3448 | + htab->elf.iplt->output_offset | |
3449 | + h->plt.offset), | |
3450 | htab->elf.sgot->contents + h->got.offset); | |
3451 | return TRUE; | |
3452 | } | |
3453 | } | |
3454 | else if (info->shared | |
8c21ca21 | 3455 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
947216bf | 3456 | { |
470b557a AK |
3457 | /* If this is a static link, or it is a -Bsymbolic link and |
3458 | the symbol is defined locally or was forced to be local | |
3459 | because of a version file, we just want to emit a | |
3460 | RELATIVE reloc. The entry in the global offset table | |
3461 | will already have been initialized in the | |
3462 | relocate_section function. */ | |
8c21ca21 AK |
3463 | if (!h->def_regular) |
3464 | return FALSE; | |
0451c93c | 3465 | BFD_ASSERT((h->got.offset & 1) != 0); |
947216bf AM |
3466 | rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE); |
3467 | rela.r_addend = (h->root.u.def.value | |
3468 | + h->root.u.def.section->output_section->vma | |
3469 | + h->root.u.def.section->output_offset); | |
3470 | } | |
a85d7ed0 NC |
3471 | else |
3472 | { | |
3473 | BFD_ASSERT((h->got.offset & 1) == 0); | |
470b557a | 3474 | do_glob_dat: |
f41345a7 | 3475 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset); |
a85d7ed0 | 3476 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT); |
947216bf AM |
3477 | rela.r_addend = 0; |
3478 | } | |
a85d7ed0 | 3479 | |
f41345a7 AK |
3480 | loc = htab->elf.srelgot->contents; |
3481 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela); | |
0451c93c | 3482 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3483 | } |
3484 | ||
f5385ebf | 3485 | if (h->needs_copy) |
a85d7ed0 | 3486 | { |
a85d7ed0 | 3487 | Elf_Internal_Rela rela; |
947216bf | 3488 | bfd_byte *loc; |
a85d7ed0 NC |
3489 | |
3490 | /* This symbols needs a copy reloc. Set it up. */ | |
3491 | ||
0451c93c MS |
3492 | if (h->dynindx == -1 |
3493 | || (h->root.type != bfd_link_hash_defined | |
3494 | && h->root.type != bfd_link_hash_defweak) | |
3495 | || htab->srelbss == NULL) | |
3496 | abort (); | |
a85d7ed0 NC |
3497 | |
3498 | rela.r_offset = (h->root.u.def.value | |
3499 | + h->root.u.def.section->output_section->vma | |
3500 | + h->root.u.def.section->output_offset); | |
3501 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY); | |
3502 | rela.r_addend = 0; | |
947216bf AM |
3503 | loc = htab->srelbss->contents; |
3504 | loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
0451c93c | 3505 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3506 | } |
3507 | ||
3508 | /* Mark some specially defined symbols as absolute. */ | |
3509 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
22edb2f1 RS |
3510 | || h == htab->elf.hgot |
3511 | || h == htab->elf.hplt) | |
a85d7ed0 NC |
3512 | sym->st_shndx = SHN_ABS; |
3513 | ||
b34976b6 | 3514 | return TRUE; |
a85d7ed0 NC |
3515 | } |
3516 | ||
0451c93c MS |
3517 | /* Used to decide how to sort relocs in an optimal manner for the |
3518 | dynamic linker, before writing them out. */ | |
3519 | ||
3520 | static enum elf_reloc_type_class | |
2c3fc389 | 3521 | elf_s390_reloc_type_class (const Elf_Internal_Rela *rela) |
0451c93c MS |
3522 | { |
3523 | switch ((int) ELF64_R_TYPE (rela->r_info)) | |
3524 | { | |
3525 | case R_390_RELATIVE: | |
3526 | return reloc_class_relative; | |
3527 | case R_390_JMP_SLOT: | |
3528 | return reloc_class_plt; | |
3529 | case R_390_COPY: | |
3530 | return reloc_class_copy; | |
3531 | default: | |
3532 | return reloc_class_normal; | |
3533 | } | |
3534 | } | |
3535 | ||
a85d7ed0 NC |
3536 | /* Finish up the dynamic sections. */ |
3537 | ||
b34976b6 | 3538 | static bfd_boolean |
4dfe6ac6 NC |
3539 | elf_s390_finish_dynamic_sections (bfd *output_bfd, |
3540 | struct bfd_link_info *info) | |
a85d7ed0 | 3541 | { |
0451c93c | 3542 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
3543 | bfd *dynobj; |
3544 | asection *sdyn; | |
470b557a AK |
3545 | bfd *ibfd; |
3546 | unsigned int i; | |
a85d7ed0 | 3547 | |
0451c93c | 3548 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
3549 | if (htab == NULL) |
3550 | return FALSE; | |
3551 | ||
0451c93c | 3552 | dynobj = htab->elf.dynobj; |
3d4d4302 | 3553 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
a85d7ed0 | 3554 | |
0451c93c | 3555 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 | 3556 | { |
a85d7ed0 NC |
3557 | Elf64_External_Dyn *dyncon, *dynconend; |
3558 | ||
f41345a7 | 3559 | if (sdyn == NULL || htab->elf.sgot == NULL) |
0451c93c | 3560 | abort (); |
a85d7ed0 NC |
3561 | |
3562 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 3563 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
a85d7ed0 NC |
3564 | for (; dyncon < dynconend; dyncon++) |
3565 | { | |
3566 | Elf_Internal_Dyn dyn; | |
a85d7ed0 | 3567 | asection *s; |
ec338859 | 3568 | |
a85d7ed0 | 3569 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); |
ec338859 | 3570 | |
a85d7ed0 NC |
3571 | switch (dyn.d_tag) |
3572 | { | |
3573 | default: | |
0451c93c | 3574 | continue; |
ec338859 | 3575 | |
a85d7ed0 | 3576 | case DT_PLTGOT: |
f41345a7 | 3577 | dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma; |
0451c93c | 3578 | break; |
ec338859 | 3579 | |
a85d7ed0 | 3580 | case DT_JMPREL: |
f41345a7 | 3581 | dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma; |
a85d7ed0 | 3582 | break; |
ec338859 | 3583 | |
a85d7ed0 | 3584 | case DT_PLTRELSZ: |
f41345a7 | 3585 | s = htab->elf.srelplt->output_section; |
eea6121a | 3586 | dyn.d_un.d_val = s->size; |
a85d7ed0 | 3587 | break; |
ec338859 | 3588 | |
a85d7ed0 NC |
3589 | case DT_RELASZ: |
3590 | /* The procedure linkage table relocs (DT_JMPREL) should | |
3591 | not be included in the overall relocs (DT_RELA). | |
3592 | Therefore, we override the DT_RELASZ entry here to | |
3593 | make it not include the JMPREL relocs. Since the | |
3594 | linker script arranges for .rela.plt to follow all | |
3595 | other relocation sections, we don't have to worry | |
3596 | about changing the DT_RELA entry. */ | |
f41345a7 | 3597 | s = htab->elf.srelplt->output_section; |
eea6121a | 3598 | dyn.d_un.d_val -= s->size; |
a85d7ed0 NC |
3599 | break; |
3600 | } | |
0451c93c MS |
3601 | |
3602 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
a85d7ed0 NC |
3603 | } |
3604 | ||
3605 | /* Fill in the special first entry in the procedure linkage table. */ | |
f41345a7 | 3606 | if (htab->elf.splt && htab->elf.splt->size > 0) |
a85d7ed0 NC |
3607 | { |
3608 | /* fill in blueprint for plt 0 entry */ | |
f41345a7 | 3609 | memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry, |
9aa17453 | 3610 | PLT_FIRST_ENTRY_SIZE); |
a85d7ed0 NC |
3611 | /* Fixup relative address to start of GOT */ |
3612 | bfd_put_32 (output_bfd, | |
f41345a7 AK |
3613 | (htab->elf.sgotplt->output_section->vma + |
3614 | htab->elf.sgotplt->output_offset | |
3615 | - htab->elf.splt->output_section->vma - 6)/2, | |
3616 | htab->elf.splt->contents + 8); | |
a85d7ed0 | 3617 | } |
f41345a7 | 3618 | elf_section_data (htab->elf.splt->output_section) |
0451c93c | 3619 | ->this_hdr.sh_entsize = 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. */ |
f41345a7 | 3634 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 12); |
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. */ | |
3642 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
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 | ||
3650 | local_plt = elf_s390_local_plt (ibfd); | |
3651 | if (local_plt != NULL) | |
3652 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
3653 | { | |
3654 | if (local_plt[i].plt.offset != (bfd_vma) -1) | |
3655 | { | |
3656 | asection *sec = local_plt[i].sec; | |
3657 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i); | |
3658 | if (isym == NULL) | |
3659 | return FALSE; | |
3660 | ||
3661 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
3662 | elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab, | |
3663 | local_plt[i].plt.offset, | |
3664 | isym->st_value | |
3665 | + sec->output_section->vma | |
3666 | + sec->output_offset); | |
3667 | ||
3668 | } | |
3669 | } | |
3670 | } | |
3671 | ||
b34976b6 | 3672 | return TRUE; |
a85d7ed0 NC |
3673 | } |
3674 | ||
4c45e5c9 JJ |
3675 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
3676 | or (bfd_vma) -1 if it should not be included. */ | |
3677 | ||
3678 | static bfd_vma | |
3679 | elf_s390_plt_sym_val (bfd_vma i, const asection *plt, | |
3680 | const arelent *rel ATTRIBUTE_UNUSED) | |
3681 | { | |
3682 | return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE; | |
3683 | } | |
3684 | ||
ae9a127f NC |
3685 | /* Why was the hash table entry size definition changed from |
3686 | ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and | |
3687 | this is the only reason for the s390_elf64_size_info structure. */ | |
a85d7ed0 NC |
3688 | |
3689 | const struct elf_size_info s390_elf64_size_info = | |
3690 | { | |
3691 | sizeof (Elf64_External_Ehdr), | |
3692 | sizeof (Elf64_External_Phdr), | |
3693 | sizeof (Elf64_External_Shdr), | |
3694 | sizeof (Elf64_External_Rel), | |
3695 | sizeof (Elf64_External_Rela), | |
3696 | sizeof (Elf64_External_Sym), | |
3697 | sizeof (Elf64_External_Dyn), | |
3698 | sizeof (Elf_External_Note), | |
ae9a127f NC |
3699 | 8, /* hash-table entry size. */ |
3700 | 1, /* internal relocations per external relocations. */ | |
3701 | 64, /* arch_size. */ | |
45d6a902 | 3702 | 3, /* log_file_align. */ |
a85d7ed0 NC |
3703 | ELFCLASS64, EV_CURRENT, |
3704 | bfd_elf64_write_out_phdrs, | |
3705 | bfd_elf64_write_shdrs_and_ehdr, | |
1489a3a0 | 3706 | bfd_elf64_checksum_contents, |
a85d7ed0 | 3707 | bfd_elf64_write_relocs, |
73ff0d56 | 3708 | bfd_elf64_swap_symbol_in, |
a85d7ed0 NC |
3709 | bfd_elf64_swap_symbol_out, |
3710 | bfd_elf64_slurp_reloc_table, | |
3711 | bfd_elf64_slurp_symbol_table, | |
3712 | bfd_elf64_swap_dyn_in, | |
3713 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
3714 | bfd_elf64_swap_reloc_in, |
3715 | bfd_elf64_swap_reloc_out, | |
3716 | bfd_elf64_swap_reloca_in, | |
3717 | bfd_elf64_swap_reloca_out | |
a85d7ed0 NC |
3718 | }; |
3719 | ||
3720 | #define TARGET_BIG_SYM bfd_elf64_s390_vec | |
3721 | #define TARGET_BIG_NAME "elf64-s390" | |
3722 | #define ELF_ARCH bfd_arch_s390 | |
ae95ffa6 | 3723 | #define ELF_TARGET_ID S390_ELF_DATA |
a85d7ed0 NC |
3724 | #define ELF_MACHINE_CODE EM_S390 |
3725 | #define ELF_MACHINE_ALT1 EM_S390_OLD | |
3726 | #define ELF_MAXPAGESIZE 0x1000 | |
3727 | ||
3728 | #define elf_backend_size_info s390_elf64_size_info | |
3729 | ||
3730 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 3731 | #define elf_backend_can_refcount 1 |
a85d7ed0 NC |
3732 | #define elf_backend_want_got_plt 1 |
3733 | #define elf_backend_plt_readonly 1 | |
3734 | #define elf_backend_want_plt_sym 0 | |
3735 | #define elf_backend_got_header_size 24 | |
b491616a | 3736 | #define elf_backend_rela_normal 1 |
a85d7ed0 NC |
3737 | |
3738 | #define elf_info_to_howto elf_s390_info_to_howto | |
3739 | ||
a85d7ed0 NC |
3740 | #define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name |
3741 | #define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create | |
3742 | #define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup | |
157090f7 | 3743 | #define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup |
a85d7ed0 NC |
3744 | |
3745 | #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol | |
3746 | #define elf_backend_check_relocs elf_s390_check_relocs | |
0451c93c MS |
3747 | #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol |
3748 | #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections | |
a85d7ed0 NC |
3749 | #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections |
3750 | #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol | |
3751 | #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook | |
3752 | #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook | |
0451c93c | 3753 | #define elf_backend_reloc_type_class elf_s390_reloc_type_class |
a85d7ed0 NC |
3754 | #define elf_backend_relocate_section elf_s390_relocate_section |
3755 | #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections | |
74541ad4 | 3756 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
29c2fb7c | 3757 | #define elf_backend_reloc_type_class elf_s390_reloc_type_class |
4c45e5c9 | 3758 | #define elf_backend_plt_sym_val elf_s390_plt_sym_val |
470b557a | 3759 | #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook |
a85d7ed0 | 3760 | |
69fc87f1 MS |
3761 | #define bfd_elf64_mkobject elf_s390_mkobject |
3762 | #define elf_backend_object_p elf_s390_object_p | |
a85d7ed0 | 3763 | |
2c3fc389 NC |
3764 | /* Enable ELF64 archive functions. */ |
3765 | #define bfd_elf64_archive_functions | |
3766 | extern bfd_boolean bfd_elf64_archive_slurp_armap (bfd *); | |
3767 | extern bfd_boolean bfd_elf64_archive_write_armap (bfd *, unsigned int, struct orl *, unsigned int, int); | |
3768 | ||
3769 | #define bfd_elf64_archive_slurp_extended_name_table _bfd_archive_coff_slurp_extended_name_table | |
3770 | #define bfd_elf64_archive_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table | |
3771 | #define bfd_elf64_archive_truncate_arname _bfd_archive_coff_truncate_arname | |
3772 | #define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr | |
3773 | #define bfd_elf64_archive_write_ar_hdr _bfd_archive_coff_write_ar_hdr | |
3774 | #define bfd_elf64_archive_openr_next_archived_file _bfd_archive_coff_openr_next_archived_file | |
3775 | #define bfd_elf64_archive_get_elt_at_index _bfd_archive_coff_get_elt_at_index | |
3776 | #define bfd_elf64_archive_generic_stat_arch_elt _bfd_archive_coff_generic_stat_arch_elt | |
3777 | #define bfd_elf64_archive_update_armap_timestamp _bfd_archive_coff_update_armap_timestamp | |
3778 | ||
a85d7ed0 | 3779 | #include "elf64-target.h" |