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 */ | |
fb798c50 | 46 | 0, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */ |
a85d7ed0 | 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), | |
fb798c50 AK |
174 | HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield, |
175 | bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE), | |
176 | HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield, | |
177 | bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE), | |
178 | HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield, | |
179 | bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE), | |
180 | HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield, | |
181 | bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE), | |
a85d7ed0 NC |
182 | }; |
183 | ||
184 | /* GNU extension to record C++ vtable hierarchy. */ | |
185 | static reloc_howto_type elf64_s390_vtinherit_howto = | |
b34976b6 | 186 | HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE); |
a85d7ed0 | 187 | static reloc_howto_type elf64_s390_vtentry_howto = |
b34976b6 | 188 | 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 |
189 | |
190 | static reloc_howto_type * | |
2c3fc389 NC |
191 | elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
192 | bfd_reloc_code_real_type code) | |
a85d7ed0 | 193 | { |
0451c93c MS |
194 | switch (code) |
195 | { | |
196 | case BFD_RELOC_NONE: | |
197 | return &elf_howto_table[(int) R_390_NONE]; | |
198 | case BFD_RELOC_8: | |
199 | return &elf_howto_table[(int) R_390_8]; | |
200 | case BFD_RELOC_390_12: | |
201 | return &elf_howto_table[(int) R_390_12]; | |
202 | case BFD_RELOC_16: | |
203 | return &elf_howto_table[(int) R_390_16]; | |
204 | case BFD_RELOC_32: | |
205 | return &elf_howto_table[(int) R_390_32]; | |
206 | case BFD_RELOC_CTOR: | |
207 | return &elf_howto_table[(int) R_390_32]; | |
208 | case BFD_RELOC_32_PCREL: | |
209 | return &elf_howto_table[(int) R_390_PC32]; | |
210 | case BFD_RELOC_390_GOT12: | |
211 | return &elf_howto_table[(int) R_390_GOT12]; | |
212 | case BFD_RELOC_32_GOT_PCREL: | |
213 | return &elf_howto_table[(int) R_390_GOT32]; | |
214 | case BFD_RELOC_390_PLT32: | |
215 | return &elf_howto_table[(int) R_390_PLT32]; | |
216 | case BFD_RELOC_390_COPY: | |
217 | return &elf_howto_table[(int) R_390_COPY]; | |
218 | case BFD_RELOC_390_GLOB_DAT: | |
219 | return &elf_howto_table[(int) R_390_GLOB_DAT]; | |
220 | case BFD_RELOC_390_JMP_SLOT: | |
221 | return &elf_howto_table[(int) R_390_JMP_SLOT]; | |
222 | case BFD_RELOC_390_RELATIVE: | |
223 | return &elf_howto_table[(int) R_390_RELATIVE]; | |
224 | case BFD_RELOC_32_GOTOFF: | |
5236c819 | 225 | return &elf_howto_table[(int) R_390_GOTOFF32]; |
0451c93c MS |
226 | case BFD_RELOC_390_GOTPC: |
227 | return &elf_howto_table[(int) R_390_GOTPC]; | |
228 | case BFD_RELOC_390_GOT16: | |
229 | return &elf_howto_table[(int) R_390_GOT16]; | |
230 | case BFD_RELOC_16_PCREL: | |
231 | return &elf_howto_table[(int) R_390_PC16]; | |
fb798c50 AK |
232 | case BFD_RELOC_390_PC12DBL: |
233 | return &elf_howto_table[(int) R_390_PC12DBL]; | |
234 | case BFD_RELOC_390_PLT12DBL: | |
235 | return &elf_howto_table[(int) R_390_PLT12DBL]; | |
0451c93c MS |
236 | case BFD_RELOC_390_PC16DBL: |
237 | return &elf_howto_table[(int) R_390_PC16DBL]; | |
238 | case BFD_RELOC_390_PLT16DBL: | |
239 | return &elf_howto_table[(int) R_390_PLT16DBL]; | |
fb798c50 AK |
240 | case BFD_RELOC_390_PC24DBL: |
241 | return &elf_howto_table[(int) R_390_PC24DBL]; | |
242 | case BFD_RELOC_390_PLT24DBL: | |
243 | return &elf_howto_table[(int) R_390_PLT24DBL]; | |
0451c93c MS |
244 | case BFD_RELOC_390_PC32DBL: |
245 | return &elf_howto_table[(int) R_390_PC32DBL]; | |
246 | case BFD_RELOC_390_PLT32DBL: | |
247 | return &elf_howto_table[(int) R_390_PLT32DBL]; | |
248 | case BFD_RELOC_390_GOTPCDBL: | |
249 | return &elf_howto_table[(int) R_390_GOTPCDBL]; | |
250 | case BFD_RELOC_64: | |
251 | return &elf_howto_table[(int) R_390_64]; | |
252 | case BFD_RELOC_64_PCREL: | |
253 | return &elf_howto_table[(int) R_390_PC64]; | |
254 | case BFD_RELOC_390_GOT64: | |
255 | return &elf_howto_table[(int) R_390_GOT64]; | |
256 | case BFD_RELOC_390_PLT64: | |
257 | return &elf_howto_table[(int) R_390_PLT64]; | |
258 | case BFD_RELOC_390_GOTENT: | |
259 | return &elf_howto_table[(int) R_390_GOTENT]; | |
5236c819 MS |
260 | case BFD_RELOC_16_GOTOFF: |
261 | return &elf_howto_table[(int) R_390_GOTOFF16]; | |
262 | case BFD_RELOC_390_GOTOFF64: | |
263 | return &elf_howto_table[(int) R_390_GOTOFF64]; | |
264 | case BFD_RELOC_390_GOTPLT12: | |
265 | return &elf_howto_table[(int) R_390_GOTPLT12]; | |
266 | case BFD_RELOC_390_GOTPLT16: | |
267 | return &elf_howto_table[(int) R_390_GOTPLT16]; | |
268 | case BFD_RELOC_390_GOTPLT32: | |
269 | return &elf_howto_table[(int) R_390_GOTPLT32]; | |
270 | case BFD_RELOC_390_GOTPLT64: | |
271 | return &elf_howto_table[(int) R_390_GOTPLT64]; | |
272 | case BFD_RELOC_390_GOTPLTENT: | |
273 | return &elf_howto_table[(int) R_390_GOTPLTENT]; | |
274 | case BFD_RELOC_390_PLTOFF16: | |
275 | return &elf_howto_table[(int) R_390_PLTOFF16]; | |
276 | case BFD_RELOC_390_PLTOFF32: | |
277 | return &elf_howto_table[(int) R_390_PLTOFF32]; | |
278 | case BFD_RELOC_390_PLTOFF64: | |
279 | return &elf_howto_table[(int) R_390_PLTOFF64]; | |
69fc87f1 MS |
280 | case BFD_RELOC_390_TLS_LOAD: |
281 | return &elf_howto_table[(int) R_390_TLS_LOAD]; | |
282 | case BFD_RELOC_390_TLS_GDCALL: | |
283 | return &elf_howto_table[(int) R_390_TLS_GDCALL]; | |
284 | case BFD_RELOC_390_TLS_LDCALL: | |
285 | return &elf_howto_table[(int) R_390_TLS_LDCALL]; | |
286 | case BFD_RELOC_390_TLS_GD64: | |
287 | return &elf_howto_table[(int) R_390_TLS_GD64]; | |
288 | case BFD_RELOC_390_TLS_GOTIE12: | |
289 | return &elf_howto_table[(int) R_390_TLS_GOTIE12]; | |
290 | case BFD_RELOC_390_TLS_GOTIE64: | |
291 | return &elf_howto_table[(int) R_390_TLS_GOTIE64]; | |
292 | case BFD_RELOC_390_TLS_LDM64: | |
293 | return &elf_howto_table[(int) R_390_TLS_LDM64]; | |
294 | case BFD_RELOC_390_TLS_IE64: | |
295 | return &elf_howto_table[(int) R_390_TLS_IE64]; | |
296 | case BFD_RELOC_390_TLS_IEENT: | |
297 | return &elf_howto_table[(int) R_390_TLS_IEENT]; | |
298 | case BFD_RELOC_390_TLS_LE64: | |
299 | return &elf_howto_table[(int) R_390_TLS_LE64]; | |
300 | case BFD_RELOC_390_TLS_LDO64: | |
301 | return &elf_howto_table[(int) R_390_TLS_LDO64]; | |
302 | case BFD_RELOC_390_TLS_DTPMOD: | |
303 | return &elf_howto_table[(int) R_390_TLS_DTPMOD]; | |
304 | case BFD_RELOC_390_TLS_DTPOFF: | |
305 | return &elf_howto_table[(int) R_390_TLS_DTPOFF]; | |
306 | case BFD_RELOC_390_TLS_TPOFF: | |
307 | return &elf_howto_table[(int) R_390_TLS_TPOFF]; | |
bd1ea41b MS |
308 | case BFD_RELOC_390_20: |
309 | return &elf_howto_table[(int) R_390_20]; | |
310 | case BFD_RELOC_390_GOT20: | |
311 | return &elf_howto_table[(int) R_390_GOT20]; | |
312 | case BFD_RELOC_390_GOTPLT20: | |
313 | return &elf_howto_table[(int) R_390_GOTPLT20]; | |
314 | case BFD_RELOC_390_TLS_GOTIE20: | |
315 | return &elf_howto_table[(int) R_390_TLS_GOTIE20]; | |
470b557a AK |
316 | case BFD_RELOC_390_IRELATIVE: |
317 | return &elf_howto_table[(int) R_390_IRELATIVE]; | |
5236c819 MS |
318 | case BFD_RELOC_VTABLE_INHERIT: |
319 | return &elf64_s390_vtinherit_howto; | |
320 | case BFD_RELOC_VTABLE_ENTRY: | |
321 | return &elf64_s390_vtentry_howto; | |
0451c93c MS |
322 | default: |
323 | break; | |
324 | } | |
a85d7ed0 NC |
325 | return 0; |
326 | } | |
327 | ||
157090f7 AM |
328 | static reloc_howto_type * |
329 | elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
330 | const char *r_name) | |
331 | { | |
332 | unsigned int i; | |
333 | ||
334 | for (i = 0; | |
335 | i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); | |
336 | i++) | |
337 | if (elf_howto_table[i].name != NULL | |
338 | && strcasecmp (elf_howto_table[i].name, r_name) == 0) | |
339 | return &elf_howto_table[i]; | |
340 | ||
341 | if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0) | |
342 | return &elf64_s390_vtinherit_howto; | |
343 | if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0) | |
344 | return &elf64_s390_vtentry_howto; | |
345 | ||
346 | return NULL; | |
347 | } | |
348 | ||
a85d7ed0 NC |
349 | /* We need to use ELF64_R_TYPE so we have our own copy of this function, |
350 | and elf64-s390.c has its own copy. */ | |
351 | ||
352 | static void | |
2c3fc389 NC |
353 | elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
354 | arelent *cache_ptr, | |
355 | Elf_Internal_Rela *dst) | |
a85d7ed0 | 356 | { |
d0fb9a8d JJ |
357 | unsigned int r_type = ELF64_R_TYPE(dst->r_info); |
358 | switch (r_type) | |
a85d7ed0 NC |
359 | { |
360 | case R_390_GNU_VTINHERIT: | |
361 | cache_ptr->howto = &elf64_s390_vtinherit_howto; | |
362 | break; | |
363 | ||
364 | case R_390_GNU_VTENTRY: | |
365 | cache_ptr->howto = &elf64_s390_vtentry_howto; | |
366 | break; | |
367 | ||
368 | default: | |
d0fb9a8d JJ |
369 | if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0])) |
370 | { | |
371 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
372 | abfd, (int) r_type); | |
373 | r_type = R_390_NONE; | |
374 | } | |
375 | cache_ptr->howto = &elf_howto_table[r_type]; | |
99c79b2e | 376 | } |
a85d7ed0 NC |
377 | } |
378 | ||
69fc87f1 MS |
379 | /* A relocation function which doesn't do anything. */ |
380 | static bfd_reloc_status_type | |
2c3fc389 NC |
381 | s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
382 | arelent *reloc_entry, | |
383 | asymbol *symbol ATTRIBUTE_UNUSED, | |
384 | void * data ATTRIBUTE_UNUSED, | |
385 | asection *input_section, | |
386 | bfd *output_bfd, | |
387 | char **error_message ATTRIBUTE_UNUSED) | |
69fc87f1 MS |
388 | { |
389 | if (output_bfd) | |
390 | reloc_entry->address += input_section->output_offset; | |
391 | return bfd_reloc_ok; | |
392 | } | |
393 | ||
bd1ea41b MS |
394 | /* Handle the large displacement relocs. */ |
395 | static bfd_reloc_status_type | |
2c3fc389 NC |
396 | s390_elf_ldisp_reloc (bfd *abfd, |
397 | arelent *reloc_entry, | |
398 | asymbol *symbol, | |
399 | void * data, | |
400 | asection *input_section, | |
401 | bfd *output_bfd, | |
402 | char **error_message ATTRIBUTE_UNUSED) | |
bd1ea41b MS |
403 | { |
404 | reloc_howto_type *howto = reloc_entry->howto; | |
405 | bfd_vma relocation; | |
406 | bfd_vma insn; | |
407 | ||
408 | if (output_bfd != (bfd *) NULL | |
409 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
410 | && (! howto->partial_inplace | |
411 | || reloc_entry->addend == 0)) | |
412 | { | |
413 | reloc_entry->address += input_section->output_offset; | |
414 | return bfd_reloc_ok; | |
415 | } | |
416 | if (output_bfd != NULL) | |
417 | return bfd_reloc_continue; | |
418 | ||
07515404 | 419 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
bd1ea41b MS |
420 | return bfd_reloc_outofrange; |
421 | ||
422 | relocation = (symbol->value | |
423 | + symbol->section->output_section->vma | |
424 | + symbol->section->output_offset); | |
425 | relocation += reloc_entry->addend; | |
426 | if (howto->pc_relative) | |
427 | { | |
428 | relocation -= (input_section->output_section->vma | |
429 | + input_section->output_offset); | |
430 | relocation -= reloc_entry->address; | |
431 | } | |
432 | ||
68ffbac6 | 433 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
bd1ea41b MS |
434 | insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4; |
435 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
436 | ||
437 | if ((bfd_signed_vma) relocation < - 0x80000 | |
438 | || (bfd_signed_vma) relocation > 0x7ffff) | |
439 | return bfd_reloc_overflow; | |
440 | else | |
441 | return bfd_reloc_ok; | |
442 | } | |
443 | ||
b34976b6 | 444 | static bfd_boolean |
2c3fc389 | 445 | elf_s390_is_local_label_name (bfd *abfd, const char *name) |
a85d7ed0 NC |
446 | { |
447 | if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L')) | |
b34976b6 | 448 | return TRUE; |
a85d7ed0 NC |
449 | |
450 | return _bfd_elf_is_local_label_name (abfd, name); | |
451 | } | |
452 | ||
453 | /* Functions for the 390 ELF linker. */ | |
454 | ||
455 | /* The name of the dynamic interpreter. This is put in the .interp | |
456 | section. */ | |
457 | ||
87049b0d | 458 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1" |
a85d7ed0 | 459 | |
64285810 MS |
460 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
461 | copying dynamic variables from a shared lib into an app's dynbss | |
462 | section, and instead use a dynamic relocation to point into the | |
463 | shared lib. */ | |
464 | #define ELIMINATE_COPY_RELOCS 1 | |
465 | ||
a85d7ed0 NC |
466 | /* The size in bytes of the first entry in the procedure linkage table. */ |
467 | #define PLT_FIRST_ENTRY_SIZE 32 | |
468 | /* The size in bytes of an entry in the procedure linkage table. */ | |
99c79b2e | 469 | #define PLT_ENTRY_SIZE 32 |
a85d7ed0 NC |
470 | |
471 | #define GOT_ENTRY_SIZE 8 | |
472 | ||
470b557a AK |
473 | #define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela) |
474 | ||
a85d7ed0 NC |
475 | /* The first three entries in a procedure linkage table are reserved, |
476 | and the initial contents are unimportant (we zero them out). | |
477 | Subsequent entries look like this. See the SVR4 ABI 386 | |
478 | supplement to see how this works. */ | |
479 | ||
480 | /* For the s390, simple addr offset can only be 0 - 4096. | |
481 | To use the full 16777216 TB address space, several instructions | |
482 | are needed to load an address in a register and execute | |
483 | a branch( or just saving the address) | |
484 | ||
99c79b2e | 485 | Furthermore, only r 0 and 1 are free to use!!! */ |
a85d7ed0 NC |
486 | |
487 | /* The first 3 words in the GOT are then reserved. | |
488 | Word 0 is the address of the dynamic table. | |
489 | Word 1 is a pointer to a structure describing the object | |
490 | Word 2 is used to point to the loader entry address. | |
491 | ||
492 | The code for PLT entries looks like this: | |
493 | ||
494 | The GOT holds the address in the PLT to be executed. | |
495 | The loader then gets: | |
496 | 24(15) = Pointer to the structure describing the object. | |
99c79b2e | 497 | 28(15) = Offset in symbol table |
a85d7ed0 NC |
498 | The loader must then find the module where the function is |
499 | and insert the address in the GOT. | |
500 | ||
501 | PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1 | |
502 | LG 1,0(1) # 6 bytes Load address from GOT in r1 | |
503 | BCR 15,1 # 2 bytes Jump to address | |
504 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
505 | LGF 1,12(1) # 6 bytes Load offset in symbl table in r1 | |
506 | BRCL 15,-x # 6 bytes Jump to start of PLT | |
a7e28bbe | 507 | .long ? # 4 bytes offset into .rela.plt |
a85d7ed0 NC |
508 | |
509 | Total = 32 bytes per PLT entry | |
510 | Fixup at offset 2: relative address to GOT entry | |
511 | Fixup at offset 22: relative branch to PLT0 | |
a7e28bbe | 512 | Fixup at offset 28: 32 bit offset into .rela.plt |
a85d7ed0 | 513 | |
a7e28bbe AK |
514 | A 32 bit offset into the symbol table is enough. It allows for |
515 | .rela.plt sections up to a size of 2 gigabyte. A single dynamic | |
516 | object (the main program, any shared library) is limited to 4GB in | |
517 | size. Having a .rela.plt of 2GB would already make the .plt | |
518 | section bigger than 8GB. */ | |
a85d7ed0 | 519 | |
9aa17453 AK |
520 | static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] = |
521 | { | |
522 | 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */ | |
523 | 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */ | |
524 | 0x07, 0xf1, /* br %r1 */ | |
525 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
526 | 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */ | |
527 | 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */ | |
528 | 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */ | |
529 | }; | |
a85d7ed0 NC |
530 | |
531 | /* The first PLT entry pushes the offset into the symbol table | |
a7e28bbe AK |
532 | from R1 onto the stack at 56(15) and the loader object info |
533 | at 48(15), loads the loader address in R1 and jumps to it. */ | |
a85d7ed0 NC |
534 | |
535 | /* The first entry in the PLT: | |
536 | ||
537 | PLT0: | |
538 | STG 1,56(15) # r1 contains the offset into the symbol table | |
539 | LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table | |
540 | MVC 48(8,15),8(1) # move loader ino (object struct address) to stack | |
541 | LG 1,16(1) # get entry address of loader | |
542 | BCR 15,1 # jump to loader | |
543 | ||
544 | Fixup at offset 8: relative address to start of GOT. */ | |
545 | ||
9aa17453 AK |
546 | static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] = |
547 | { | |
548 | 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */ | |
549 | 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */ | |
550 | 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */ | |
551 | 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */ | |
552 | 0x07, 0xf1, /* br %r1 */ | |
553 | 0x07, 0x00, /* nopr %r0 */ | |
554 | 0x07, 0x00, /* nopr %r0 */ | |
555 | 0x07, 0x00 /* nopr %r0 */ | |
556 | }; | |
a85d7ed0 | 557 | |
a85d7ed0 NC |
558 | |
559 | /* s390 ELF linker hash entry. */ | |
560 | ||
561 | struct elf_s390_link_hash_entry | |
562 | { | |
0451c93c | 563 | struct elf_link_hash_entry elf; |
a85d7ed0 | 564 | |
0451c93c | 565 | /* Track dynamic relocs copied for this symbol. */ |
00d8c7a9 | 566 | struct elf_dyn_relocs *dyn_relocs; |
5236c819 MS |
567 | |
568 | /* Number of GOTPLT references for a function. */ | |
569 | bfd_signed_vma gotplt_refcount; | |
69fc87f1 MS |
570 | |
571 | #define GOT_UNKNOWN 0 | |
572 | #define GOT_NORMAL 1 | |
573 | #define GOT_TLS_GD 2 | |
574 | #define GOT_TLS_IE 3 | |
575 | #define GOT_TLS_IE_NLT 3 | |
576 | unsigned char tls_type; | |
470b557a AK |
577 | |
578 | /* For pointer equality reasons we might need to change the symbol | |
579 | type from STT_GNU_IFUNC to STT_FUNC together with its value and | |
580 | section entry. So after alloc_dynrelocs only these values should | |
581 | be used. In order to check whether a symbol is IFUNC use | |
582 | s390_is_ifunc_symbol_p. */ | |
583 | bfd_vma ifunc_resolver_address; | |
584 | asection *ifunc_resolver_section; | |
a85d7ed0 NC |
585 | }; |
586 | ||
69fc87f1 MS |
587 | #define elf_s390_hash_entry(ent) \ |
588 | ((struct elf_s390_link_hash_entry *)(ent)) | |
589 | ||
470b557a AK |
590 | /* This structure represents an entry in the local PLT list needed for |
591 | local IFUNC symbols. */ | |
592 | struct plt_entry | |
593 | { | |
594 | /* The section of the local symbol. | |
595 | Set in relocate_section and used in finish_dynamic_sections. */ | |
596 | asection *sec; | |
597 | ||
598 | union | |
599 | { | |
600 | bfd_signed_vma refcount; | |
601 | bfd_vma offset; | |
602 | } plt; | |
603 | }; | |
604 | ||
0ffa91dd NC |
605 | /* NOTE: Keep this structure in sync with |
606 | the one declared in elf32-s390.c. */ | |
69fc87f1 MS |
607 | struct elf_s390_obj_tdata |
608 | { | |
609 | struct elf_obj_tdata root; | |
610 | ||
470b557a AK |
611 | /* A local PLT is needed for ifunc symbols. */ |
612 | struct plt_entry *local_plt; | |
613 | ||
0ffa91dd | 614 | /* TLS type for each local got entry. */ |
69fc87f1 MS |
615 | char *local_got_tls_type; |
616 | }; | |
617 | ||
618 | #define elf_s390_tdata(abfd) \ | |
619 | ((struct elf_s390_obj_tdata *) (abfd)->tdata.any) | |
620 | ||
470b557a AK |
621 | #define elf_s390_local_plt(abfd) \ |
622 | (elf_s390_tdata (abfd)->local_plt) | |
623 | ||
69fc87f1 MS |
624 | #define elf_s390_local_got_tls_type(abfd) \ |
625 | (elf_s390_tdata (abfd)->local_got_tls_type) | |
626 | ||
0ffa91dd NC |
627 | #define is_s390_elf(bfd) \ |
628 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
629 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 630 | && elf_object_id (bfd) == S390_ELF_DATA) |
0ffa91dd | 631 | |
69fc87f1 | 632 | static bfd_boolean |
62d7a5f6 | 633 | elf_s390_mkobject (bfd *abfd) |
69fc87f1 | 634 | { |
0ffa91dd | 635 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata), |
4dfe6ac6 | 636 | S390_ELF_DATA); |
69fc87f1 MS |
637 | } |
638 | ||
639 | static bfd_boolean | |
2c3fc389 | 640 | elf_s390_object_p (bfd *abfd) |
69fc87f1 | 641 | { |
69fc87f1 MS |
642 | /* Set the right machine number for an s390 elf32 file. */ |
643 | return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64); | |
644 | } | |
645 | ||
a85d7ed0 NC |
646 | /* s390 ELF linker hash table. */ |
647 | ||
648 | struct elf_s390_link_hash_table | |
649 | { | |
0451c93c | 650 | struct elf_link_hash_table elf; |
a85d7ed0 | 651 | |
0451c93c | 652 | /* Short-cuts to get to dynamic linker sections. */ |
0451c93c MS |
653 | asection *sdynbss; |
654 | asection *srelbss; | |
470b557a | 655 | asection *irelifunc; |
ec338859 | 656 | |
69fc87f1 MS |
657 | union { |
658 | bfd_signed_vma refcount; | |
659 | bfd_vma offset; | |
660 | } tls_ldm_got; | |
661 | ||
87d72d41 AM |
662 | /* Small local sym cache. */ |
663 | struct sym_cache sym_cache; | |
0451c93c | 664 | }; |
a85d7ed0 NC |
665 | |
666 | /* Get the s390 ELF linker hash table from a link_info structure. */ | |
667 | ||
668 | #define elf_s390_hash_table(p) \ | |
4dfe6ac6 NC |
669 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
670 | == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL) | |
a85d7ed0 | 671 | |
470b557a AK |
672 | #define ELF64 1 |
673 | #include "elf-s390-common.c" | |
674 | ||
a85d7ed0 NC |
675 | /* Create an entry in an s390 ELF linker hash table. */ |
676 | ||
677 | static struct bfd_hash_entry * | |
2c3fc389 NC |
678 | link_hash_newfunc (struct bfd_hash_entry *entry, |
679 | struct bfd_hash_table *table, | |
680 | const char *string) | |
a85d7ed0 | 681 | { |
a85d7ed0 NC |
682 | /* Allocate the structure if it has not already been allocated by a |
683 | subclass. */ | |
0451c93c MS |
684 | if (entry == NULL) |
685 | { | |
686 | entry = bfd_hash_allocate (table, | |
687 | sizeof (struct elf_s390_link_hash_entry)); | |
688 | if (entry == NULL) | |
689 | return entry; | |
690 | } | |
a85d7ed0 NC |
691 | |
692 | /* Call the allocation method of the superclass. */ | |
0451c93c MS |
693 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
694 | if (entry != NULL) | |
a85d7ed0 | 695 | { |
0451c93c MS |
696 | struct elf_s390_link_hash_entry *eh; |
697 | ||
698 | eh = (struct elf_s390_link_hash_entry *) entry; | |
699 | eh->dyn_relocs = NULL; | |
5236c819 | 700 | eh->gotplt_refcount = 0; |
69fc87f1 | 701 | eh->tls_type = GOT_UNKNOWN; |
470b557a AK |
702 | eh->ifunc_resolver_address = 0; |
703 | eh->ifunc_resolver_section = NULL; | |
a85d7ed0 NC |
704 | } |
705 | ||
0451c93c | 706 | return entry; |
a85d7ed0 NC |
707 | } |
708 | ||
709 | /* Create an s390 ELF linker hash table. */ | |
710 | ||
711 | static struct bfd_link_hash_table * | |
2c3fc389 | 712 | elf_s390_link_hash_table_create (bfd *abfd) |
a85d7ed0 NC |
713 | { |
714 | struct elf_s390_link_hash_table *ret; | |
dc810e39 | 715 | bfd_size_type amt = sizeof (struct elf_s390_link_hash_table); |
a85d7ed0 | 716 | |
7bf52ea2 | 717 | ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt); |
0451c93c | 718 | if (ret == NULL) |
a85d7ed0 NC |
719 | return NULL; |
720 | ||
66eb6687 | 721 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
722 | sizeof (struct elf_s390_link_hash_entry), |
723 | S390_ELF_DATA)) | |
a85d7ed0 | 724 | { |
e2d34d7d | 725 | free (ret); |
a85d7ed0 NC |
726 | return NULL; |
727 | } | |
728 | ||
0451c93c MS |
729 | return &ret->elf.root; |
730 | } | |
731 | ||
732 | /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up | |
733 | shortcuts to them in our hash table. */ | |
734 | ||
b34976b6 | 735 | static bfd_boolean |
4dfe6ac6 NC |
736 | create_got_section (bfd *dynobj, |
737 | struct bfd_link_info *info) | |
0451c93c MS |
738 | { |
739 | struct elf_s390_link_hash_table *htab; | |
740 | ||
741 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 742 | return FALSE; |
0451c93c MS |
743 | |
744 | htab = elf_s390_hash_table (info); | |
4dfe6ac6 NC |
745 | if (htab == NULL) |
746 | return FALSE; | |
747 | ||
3d4d4302 AM |
748 | htab->elf.sgot = bfd_get_linker_section (dynobj, ".got"); |
749 | htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt"); | |
750 | htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got"); | |
f41345a7 | 751 | if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot) |
0451c93c | 752 | abort (); |
b34976b6 | 753 | return TRUE; |
0451c93c MS |
754 | } |
755 | ||
756 | /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and | |
757 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our | |
758 | hash table. */ | |
759 | ||
b34976b6 | 760 | static bfd_boolean |
4dfe6ac6 NC |
761 | elf_s390_create_dynamic_sections (bfd *dynobj, |
762 | struct bfd_link_info *info) | |
0451c93c MS |
763 | { |
764 | struct elf_s390_link_hash_table *htab; | |
765 | ||
766 | htab = elf_s390_hash_table (info); | |
4dfe6ac6 NC |
767 | if (htab == NULL) |
768 | return FALSE; | |
769 | ||
f41345a7 | 770 | if (!htab->elf.sgot && !create_got_section (dynobj, info)) |
b34976b6 | 771 | return FALSE; |
0451c93c MS |
772 | |
773 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
b34976b6 | 774 | return FALSE; |
0451c93c | 775 | |
3d4d4302 AM |
776 | htab->elf.splt = bfd_get_linker_section (dynobj, ".plt"); |
777 | htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt"); | |
778 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); | |
0451c93c | 779 | if (!info->shared) |
3d4d4302 | 780 | htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
0451c93c | 781 | |
f41345a7 | 782 | if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss |
0451c93c MS |
783 | || (!info->shared && !htab->srelbss)) |
784 | abort (); | |
785 | ||
b34976b6 | 786 | return TRUE; |
a85d7ed0 NC |
787 | } |
788 | ||
0451c93c MS |
789 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
790 | ||
791 | static void | |
2c3fc389 NC |
792 | elf_s390_copy_indirect_symbol (struct bfd_link_info *info, |
793 | struct elf_link_hash_entry *dir, | |
794 | struct elf_link_hash_entry *ind) | |
0451c93c MS |
795 | { |
796 | struct elf_s390_link_hash_entry *edir, *eind; | |
797 | ||
798 | edir = (struct elf_s390_link_hash_entry *) dir; | |
799 | eind = (struct elf_s390_link_hash_entry *) ind; | |
800 | ||
801 | if (eind->dyn_relocs != NULL) | |
802 | { | |
803 | if (edir->dyn_relocs != NULL) | |
804 | { | |
00d8c7a9 AK |
805 | struct elf_dyn_relocs **pp; |
806 | struct elf_dyn_relocs *p; | |
0451c93c | 807 | |
fcfa13d2 | 808 | /* Add reloc counts against the indirect sym to the direct sym |
0451c93c MS |
809 | list. Merge any entries against the same section. */ |
810 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
811 | { | |
00d8c7a9 | 812 | struct elf_dyn_relocs *q; |
0451c93c MS |
813 | |
814 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
815 | if (q->sec == p->sec) | |
816 | { | |
817 | q->pc_count += p->pc_count; | |
818 | q->count += p->count; | |
819 | *pp = p->next; | |
820 | break; | |
821 | } | |
822 | if (q == NULL) | |
823 | pp = &p->next; | |
824 | } | |
825 | *pp = edir->dyn_relocs; | |
826 | } | |
827 | ||
828 | edir->dyn_relocs = eind->dyn_relocs; | |
829 | eind->dyn_relocs = NULL; | |
830 | } | |
831 | ||
69fc87f1 MS |
832 | if (ind->root.type == bfd_link_hash_indirect |
833 | && dir->got.refcount <= 0) | |
834 | { | |
835 | edir->tls_type = eind->tls_type; | |
836 | eind->tls_type = GOT_UNKNOWN; | |
837 | } | |
838 | ||
64285810 MS |
839 | if (ELIMINATE_COPY_RELOCS |
840 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
841 | && dir->dynamic_adjusted) |
842 | { | |
843 | /* If called to transfer flags for a weakdef during processing | |
844 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
845 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
846 | dir->ref_dynamic |= ind->ref_dynamic; | |
847 | dir->ref_regular |= ind->ref_regular; | |
848 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
849 | dir->needs_plt |= ind->needs_plt; | |
850 | } | |
64285810 | 851 | else |
fcfa13d2 | 852 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
0451c93c | 853 | } |
a85d7ed0 | 854 | |
69fc87f1 | 855 | static int |
2c3fc389 NC |
856 | elf_s390_tls_transition (struct bfd_link_info *info, |
857 | int r_type, | |
858 | int is_local) | |
69fc87f1 MS |
859 | { |
860 | if (info->shared) | |
861 | return r_type; | |
862 | ||
863 | switch (r_type) | |
864 | { | |
865 | case R_390_TLS_GD64: | |
866 | case R_390_TLS_IE64: | |
867 | if (is_local) | |
868 | return R_390_TLS_LE64; | |
869 | return R_390_TLS_IE64; | |
870 | case R_390_TLS_GOTIE64: | |
871 | if (is_local) | |
872 | return R_390_TLS_LE64; | |
873 | return R_390_TLS_GOTIE64; | |
874 | case R_390_TLS_LDM64: | |
875 | return R_390_TLS_LE64; | |
876 | } | |
877 | ||
878 | return r_type; | |
879 | } | |
880 | ||
a85d7ed0 NC |
881 | /* Look through the relocs for a section during the first phase, and |
882 | allocate space in the global offset table or procedure linkage | |
883 | table. */ | |
884 | ||
b34976b6 | 885 | static bfd_boolean |
4dfe6ac6 NC |
886 | elf_s390_check_relocs (bfd *abfd, |
887 | struct bfd_link_info *info, | |
888 | asection *sec, | |
889 | const Elf_Internal_Rela *relocs) | |
a85d7ed0 | 890 | { |
0451c93c | 891 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
892 | Elf_Internal_Shdr *symtab_hdr; |
893 | struct elf_link_hash_entry **sym_hashes; | |
a85d7ed0 NC |
894 | const Elf_Internal_Rela *rel; |
895 | const Elf_Internal_Rela *rel_end; | |
a85d7ed0 | 896 | asection *sreloc; |
5236c819 | 897 | bfd_signed_vma *local_got_refcounts; |
69fc87f1 | 898 | int tls_type, old_tls_type; |
a85d7ed0 | 899 | |
1049f94e | 900 | if (info->relocatable) |
b34976b6 | 901 | return TRUE; |
a85d7ed0 | 902 | |
0ffa91dd NC |
903 | BFD_ASSERT (is_s390_elf (abfd)); |
904 | ||
0451c93c | 905 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
906 | if (htab == NULL) |
907 | return FALSE; | |
908 | ||
0ffa91dd | 909 | symtab_hdr = &elf_symtab_hdr (abfd); |
a85d7ed0 | 910 | sym_hashes = elf_sym_hashes (abfd); |
5236c819 | 911 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 912 | |
a85d7ed0 NC |
913 | sreloc = NULL; |
914 | ||
915 | rel_end = relocs + sec->reloc_count; | |
916 | for (rel = relocs; rel < rel_end; rel++) | |
917 | { | |
69fc87f1 | 918 | unsigned int r_type; |
a85d7ed0 NC |
919 | unsigned long r_symndx; |
920 | struct elf_link_hash_entry *h; | |
470b557a | 921 | Elf_Internal_Sym *isym; |
a85d7ed0 NC |
922 | |
923 | r_symndx = ELF64_R_SYM (rel->r_info); | |
924 | ||
0451c93c MS |
925 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
926 | { | |
d003868e AM |
927 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
928 | abfd, | |
0451c93c | 929 | r_symndx); |
b34976b6 | 930 | return FALSE; |
0451c93c MS |
931 | } |
932 | ||
a85d7ed0 | 933 | if (r_symndx < symtab_hdr->sh_info) |
470b557a AK |
934 | { |
935 | /* A local symbol. */ | |
936 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
937 | abfd, r_symndx); | |
938 | if (isym == NULL) | |
939 | return FALSE; | |
940 | ||
941 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
942 | { | |
943 | struct plt_entry *plt; | |
944 | ||
0cb79d69 AK |
945 | if (htab->elf.dynobj == NULL) |
946 | htab->elf.dynobj = abfd; | |
947 | ||
470b557a AK |
948 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) |
949 | return FALSE; | |
950 | ||
951 | if (local_got_refcounts == NULL) | |
952 | { | |
953 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) | |
954 | return FALSE; | |
955 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
956 | } | |
957 | plt = elf_s390_local_plt (abfd); | |
958 | plt[r_symndx].plt.refcount++; | |
959 | } | |
960 | h = NULL; | |
961 | } | |
a85d7ed0 | 962 | else |
973a3492 L |
963 | { |
964 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
965 | while (h->root.type == bfd_link_hash_indirect | |
966 | || h->root.type == bfd_link_hash_warning) | |
967 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
968 | |
969 | /* PR15323, ref flags aren't set for references in the same | |
970 | object. */ | |
971 | h->root.non_ir_ref = 1; | |
973a3492 | 972 | } |
a85d7ed0 | 973 | |
5236c819 MS |
974 | /* Create got section and local_got_refcounts array if they |
975 | are needed. */ | |
69fc87f1 MS |
976 | r_type = elf_s390_tls_transition (info, |
977 | ELF64_R_TYPE (rel->r_info), | |
978 | h == NULL); | |
979 | switch (r_type) | |
a85d7ed0 NC |
980 | { |
981 | case R_390_GOT12: | |
947216bf | 982 | case R_390_GOT16: |
bd1ea41b | 983 | case R_390_GOT20: |
a85d7ed0 NC |
984 | case R_390_GOT32: |
985 | case R_390_GOT64: | |
986 | case R_390_GOTENT: | |
5236c819 MS |
987 | case R_390_GOTPLT12: |
988 | case R_390_GOTPLT16: | |
bd1ea41b | 989 | case R_390_GOTPLT20: |
5236c819 MS |
990 | case R_390_GOTPLT32: |
991 | case R_390_GOTPLT64: | |
992 | case R_390_GOTPLTENT: | |
69fc87f1 MS |
993 | case R_390_TLS_GD64: |
994 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 995 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
996 | case R_390_TLS_GOTIE64: |
997 | case R_390_TLS_IEENT: | |
998 | case R_390_TLS_IE64: | |
999 | case R_390_TLS_LDM64: | |
5236c819 MS |
1000 | if (h == NULL |
1001 | && local_got_refcounts == NULL) | |
a85d7ed0 | 1002 | { |
470b557a | 1003 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) |
5236c819 | 1004 | return FALSE; |
470b557a | 1005 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 1006 | } |
470b557a | 1007 | |
5236c819 MS |
1008 | /* Fall through. */ |
1009 | case R_390_GOTOFF16: | |
1010 | case R_390_GOTOFF32: | |
1011 | case R_390_GOTOFF64: | |
0451c93c MS |
1012 | case R_390_GOTPC: |
1013 | case R_390_GOTPCDBL: | |
f41345a7 | 1014 | if (htab->elf.sgot == NULL) |
0451c93c MS |
1015 | { |
1016 | if (htab->elf.dynobj == NULL) | |
1017 | htab->elf.dynobj = abfd; | |
1018 | if (!create_got_section (htab->elf.dynobj, info)) | |
b34976b6 | 1019 | return FALSE; |
0451c93c | 1020 | } |
5236c819 MS |
1021 | } |
1022 | ||
470b557a AK |
1023 | if (h != NULL) |
1024 | { | |
1025 | if (htab->elf.dynobj == NULL) | |
1026 | htab->elf.dynobj = abfd; | |
1027 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
1028 | return FALSE; | |
1029 | ||
1030 | /* Make sure an IFUNC symbol defined in a non-shared object | |
1031 | always gets a PLT slot. */ | |
1032 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
1033 | { | |
1034 | /* The symbol is called by the dynamic loader in order | |
1035 | to resolve the relocation. So it is in fact also | |
1036 | referenced. */ | |
1037 | h->ref_regular = 1; | |
1038 | h->needs_plt = 1; | |
1039 | } | |
1040 | } | |
1041 | ||
69fc87f1 | 1042 | switch (r_type) |
5236c819 | 1043 | { |
5236c819 MS |
1044 | case R_390_GOTOFF16: |
1045 | case R_390_GOTOFF32: | |
1046 | case R_390_GOTOFF64: | |
1047 | case R_390_GOTPC: | |
1048 | case R_390_GOTPCDBL: | |
470b557a AK |
1049 | /* These relocs do not need a GOT slot. They just load the |
1050 | GOT pointer itself or address something else relative to | |
1051 | the GOT. Since the GOT pointer has been set up above we | |
1052 | are done. */ | |
0451c93c | 1053 | break; |
ec338859 | 1054 | |
fb798c50 | 1055 | case R_390_PLT12DBL: |
947216bf | 1056 | case R_390_PLT16DBL: |
fb798c50 | 1057 | case R_390_PLT24DBL: |
a85d7ed0 NC |
1058 | case R_390_PLT32: |
1059 | case R_390_PLT32DBL: | |
1060 | case R_390_PLT64: | |
5236c819 MS |
1061 | case R_390_PLTOFF16: |
1062 | case R_390_PLTOFF32: | |
1063 | case R_390_PLTOFF64: | |
a85d7ed0 | 1064 | /* This symbol requires a procedure linkage table entry. We |
947216bf AM |
1065 | actually build the entry in adjust_dynamic_symbol, |
1066 | because this might be a case of linking PIC code which is | |
1067 | never referenced by a dynamic object, in which case we | |
1068 | don't need to generate a procedure linkage table entry | |
1069 | after all. */ | |
ec338859 | 1070 | |
a85d7ed0 | 1071 | /* If this is a local symbol, we resolve it directly without |
947216bf | 1072 | creating a procedure linkage table entry. */ |
5236c819 MS |
1073 | if (h != NULL) |
1074 | { | |
f5385ebf | 1075 | h->needs_plt = 1; |
5236c819 MS |
1076 | h->plt.refcount += 1; |
1077 | } | |
1078 | break; | |
ec338859 | 1079 | |
5236c819 MS |
1080 | case R_390_GOTPLT12: |
1081 | case R_390_GOTPLT16: | |
bd1ea41b | 1082 | case R_390_GOTPLT20: |
5236c819 MS |
1083 | case R_390_GOTPLT32: |
1084 | case R_390_GOTPLT64: | |
1085 | case R_390_GOTPLTENT: | |
1086 | /* This symbol requires either a procedure linkage table entry | |
1087 | or an entry in the local got. We actually build the entry | |
1088 | in adjust_dynamic_symbol because whether this is really a | |
1089 | global reference can change and with it the fact if we have | |
1090 | to create a plt entry or a local got entry. To be able to | |
1091 | make a once global symbol a local one we have to keep track | |
1092 | of the number of gotplt references that exist for this | |
1093 | symbol. */ | |
1094 | if (h != NULL) | |
1095 | { | |
1096 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++; | |
f5385ebf | 1097 | h->needs_plt = 1; |
5236c819 MS |
1098 | h->plt.refcount += 1; |
1099 | } | |
69fc87f1 MS |
1100 | else |
1101 | local_got_refcounts[r_symndx] += 1; | |
1102 | break; | |
1103 | ||
1104 | case R_390_TLS_LDM64: | |
1105 | htab->tls_ldm_got.refcount += 1; | |
1106 | break; | |
1107 | ||
1108 | case R_390_TLS_IE64: | |
1109 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1110 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1111 | case R_390_TLS_GOTIE64: |
1112 | case R_390_TLS_IEENT: | |
1113 | if (info->shared) | |
1114 | info->flags |= DF_STATIC_TLS; | |
1115 | /* Fall through */ | |
1116 | ||
1117 | case R_390_GOT12: | |
26e41594 | 1118 | case R_390_GOT16: |
bd1ea41b | 1119 | case R_390_GOT20: |
69fc87f1 MS |
1120 | case R_390_GOT32: |
1121 | case R_390_GOT64: | |
1122 | case R_390_GOTENT: | |
1123 | case R_390_TLS_GD64: | |
1124 | /* This symbol requires a global offset table entry. */ | |
1125 | switch (r_type) | |
1126 | { | |
1127 | default: | |
1128 | case R_390_GOT12: | |
1129 | case R_390_GOT16: | |
bd1ea41b | 1130 | case R_390_GOT20: |
69fc87f1 MS |
1131 | case R_390_GOT32: |
1132 | case R_390_GOTENT: | |
1133 | tls_type = GOT_NORMAL; | |
1134 | break; | |
1135 | case R_390_TLS_GD64: | |
1136 | tls_type = GOT_TLS_GD; | |
1137 | break; | |
1138 | case R_390_TLS_IE64: | |
1139 | case R_390_TLS_GOTIE64: | |
1140 | tls_type = GOT_TLS_IE; | |
1141 | break; | |
1142 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1143 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1144 | case R_390_TLS_IEENT: |
1145 | tls_type = GOT_TLS_IE_NLT; | |
1146 | break; | |
1147 | } | |
1148 | ||
1149 | if (h != NULL) | |
1150 | { | |
1151 | h->got.refcount += 1; | |
1152 | old_tls_type = elf_s390_hash_entry(h)->tls_type; | |
1153 | } | |
5236c819 MS |
1154 | else |
1155 | { | |
1156 | local_got_refcounts[r_symndx] += 1; | |
69fc87f1 | 1157 | old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx]; |
5236c819 | 1158 | } |
69fc87f1 MS |
1159 | /* If a TLS symbol is accessed using IE at least once, |
1160 | there is no point to use dynamic model for it. */ | |
1161 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN) | |
1162 | { | |
1163 | if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL) | |
1164 | { | |
1165 | (*_bfd_error_handler) | |
d003868e AM |
1166 | (_("%B: `%s' accessed both as normal and thread local symbol"), |
1167 | abfd, h->root.root.string); | |
69fc87f1 MS |
1168 | return FALSE; |
1169 | } | |
1170 | if (old_tls_type > tls_type) | |
1171 | tls_type = old_tls_type; | |
1172 | } | |
1173 | ||
1174 | if (old_tls_type != tls_type) | |
1175 | { | |
1176 | if (h != NULL) | |
1177 | elf_s390_hash_entry (h)->tls_type = tls_type; | |
1178 | else | |
1179 | elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1180 | } | |
1181 | ||
1182 | if (r_type != R_390_TLS_IE64) | |
1183 | break; | |
1184 | /* Fall through */ | |
1185 | ||
1186 | case R_390_TLS_LE64: | |
1187 | if (!info->shared) | |
1188 | break; | |
1189 | info->flags |= DF_STATIC_TLS; | |
1190 | /* Fall through */ | |
ec338859 | 1191 | |
947216bf AM |
1192 | case R_390_8: |
1193 | case R_390_16: | |
a85d7ed0 NC |
1194 | case R_390_32: |
1195 | case R_390_64: | |
fb798c50 | 1196 | case R_390_PC12DBL: |
947216bf AM |
1197 | case R_390_PC16: |
1198 | case R_390_PC16DBL: | |
fb798c50 | 1199 | case R_390_PC24DBL: |
a85d7ed0 NC |
1200 | case R_390_PC32: |
1201 | case R_390_PC32DBL: | |
1202 | case R_390_PC64: | |
470b557a | 1203 | if (h != NULL) |
0451c93c MS |
1204 | { |
1205 | /* If this reloc is in a read-only section, we might | |
1206 | need a copy reloc. We can't check reliably at this | |
1207 | stage whether the section is read-only, as input | |
1208 | sections have not yet been mapped to output sections. | |
1209 | Tentatively set the flag for now, and correct in | |
1210 | adjust_dynamic_symbol. */ | |
f5385ebf | 1211 | h->non_got_ref = 1; |
ec338859 | 1212 | |
470b557a AK |
1213 | if (!info->shared) |
1214 | { | |
1215 | /* We may need a .plt entry if the function this reloc | |
1216 | refers to is in a shared lib. */ | |
1217 | h->plt.refcount += 1; | |
1218 | } | |
0451c93c | 1219 | } |
ec338859 | 1220 | |
a85d7ed0 | 1221 | /* If we are creating a shared library, and this is a reloc |
0451c93c MS |
1222 | against a global symbol, or a non PC relative reloc |
1223 | against a local symbol, then we need to copy the reloc | |
1224 | into the shared library. However, if we are linking with | |
1225 | -Bsymbolic, we do not need to copy a reloc against a | |
1226 | global symbol which is defined in an object we are | |
1227 | including in the link (i.e., DEF_REGULAR is set). At | |
1228 | this point we have not seen all the input files, so it is | |
1229 | possible that DEF_REGULAR is not set now but will be set | |
1230 | later (it is never cleared). In case of a weak definition, | |
1231 | DEF_REGULAR may be cleared later by a strong definition in | |
1232 | a shared library. We account for that possibility below by | |
1233 | storing information in the relocs_copied field of the hash | |
1234 | table entry. A similar situation occurs when creating | |
1235 | shared libraries and symbol visibility changes render the | |
1236 | symbol local. | |
1237 | ||
1238 | If on the other hand, we are creating an executable, we | |
1239 | may need to keep relocations for symbols satisfied by a | |
1240 | dynamic library if we manage to avoid copy relocs for the | |
1241 | symbol. */ | |
1242 | if ((info->shared | |
1243 | && (sec->flags & SEC_ALLOC) != 0 | |
1244 | && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16 | |
fb798c50 | 1245 | && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL |
0451c93c | 1246 | && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL |
fb798c50 | 1247 | && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL |
0451c93c MS |
1248 | && ELF64_R_TYPE (rel->r_info) != R_390_PC32 |
1249 | && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL | |
1250 | && ELF64_R_TYPE (rel->r_info) != R_390_PC64) | |
1251 | || (h != NULL | |
8c21ca21 | 1252 | && (! SYMBOLIC_BIND (info, h) |
0451c93c | 1253 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1254 | || !h->def_regular)))) |
64285810 MS |
1255 | || (ELIMINATE_COPY_RELOCS |
1256 | && !info->shared | |
0451c93c MS |
1257 | && (sec->flags & SEC_ALLOC) != 0 |
1258 | && h != NULL | |
1259 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 1260 | || !h->def_regular))) |
a85d7ed0 | 1261 | { |
00d8c7a9 AK |
1262 | struct elf_dyn_relocs *p; |
1263 | struct elf_dyn_relocs **head; | |
ec338859 | 1264 | |
0451c93c MS |
1265 | /* We must copy these reloc types into the output file. |
1266 | Create a reloc section in dynobj and make room for | |
1267 | this reloc. */ | |
a85d7ed0 NC |
1268 | if (sreloc == NULL) |
1269 | { | |
440e9cd2 AK |
1270 | if (htab->elf.dynobj == NULL) |
1271 | htab->elf.dynobj = abfd; | |
1272 | ||
83bac4b0 NC |
1273 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1274 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
ec338859 | 1275 | |
a85d7ed0 | 1276 | if (sreloc == NULL) |
83bac4b0 | 1277 | return FALSE; |
a85d7ed0 | 1278 | } |
ec338859 | 1279 | |
0451c93c MS |
1280 | /* If this is a global symbol, we count the number of |
1281 | relocations we need for this symbol. */ | |
1282 | if (h != NULL) | |
a85d7ed0 | 1283 | { |
ec338859 | 1284 | head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs; |
0451c93c MS |
1285 | } |
1286 | else | |
1287 | { | |
ec338859 AM |
1288 | /* Track dynamic relocs needed for local syms too. |
1289 | We really need local syms available to do this | |
1290 | easily. Oh well. */ | |
ec338859 | 1291 | asection *s; |
6edfbbad DJ |
1292 | void *vpp; |
1293 | ||
87d72d41 AM |
1294 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1295 | abfd, r_symndx); | |
1296 | if (isym == NULL) | |
b34976b6 | 1297 | return FALSE; |
ec338859 | 1298 | |
87d72d41 AM |
1299 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
1300 | if (s == NULL) | |
1301 | s = sec; | |
1302 | ||
6edfbbad | 1303 | vpp = &elf_section_data (s)->local_dynrel; |
00d8c7a9 | 1304 | head = (struct elf_dyn_relocs **) vpp; |
ec338859 AM |
1305 | } |
1306 | ||
1307 | p = *head; | |
1308 | if (p == NULL || p->sec != sec) | |
1309 | { | |
1310 | bfd_size_type amt = sizeof *p; | |
00d8c7a9 | 1311 | p = ((struct elf_dyn_relocs *) |
ec338859 AM |
1312 | bfd_alloc (htab->elf.dynobj, amt)); |
1313 | if (p == NULL) | |
b34976b6 | 1314 | return FALSE; |
ec338859 AM |
1315 | p->next = *head; |
1316 | *head = p; | |
1317 | p->sec = sec; | |
1318 | p->count = 0; | |
1319 | p->pc_count = 0; | |
a85d7ed0 | 1320 | } |
ec338859 AM |
1321 | |
1322 | p->count += 1; | |
1323 | if (ELF64_R_TYPE (rel->r_info) == R_390_PC16 | |
fb798c50 AK |
1324 | || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL |
1325 | || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL | |
ec338859 AM |
1326 | || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL |
1327 | || ELF64_R_TYPE (rel->r_info) == R_390_PC32 | |
1328 | || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL | |
1329 | || ELF64_R_TYPE (rel->r_info) == R_390_PC64) | |
1330 | p->pc_count += 1; | |
a85d7ed0 | 1331 | } |
a85d7ed0 | 1332 | break; |
ec338859 | 1333 | |
a85d7ed0 NC |
1334 | /* This relocation describes the C++ object vtable hierarchy. |
1335 | Reconstruct it for later use during GC. */ | |
947216bf | 1336 | case R_390_GNU_VTINHERIT: |
c152c796 | 1337 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 1338 | return FALSE; |
947216bf | 1339 | break; |
ec338859 | 1340 | |
a85d7ed0 NC |
1341 | /* This relocation describes which C++ vtable entries are actually |
1342 | used. Record for later use during GC. */ | |
947216bf | 1343 | case R_390_GNU_VTENTRY: |
d17e0c6e JB |
1344 | BFD_ASSERT (h != NULL); |
1345 | if (h != NULL | |
1346 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 1347 | return FALSE; |
947216bf | 1348 | break; |
ec338859 | 1349 | |
a85d7ed0 NC |
1350 | default: |
1351 | break; | |
1352 | } | |
1353 | } | |
1354 | ||
b34976b6 | 1355 | return TRUE; |
a85d7ed0 NC |
1356 | } |
1357 | ||
1358 | /* Return the section that should be marked against GC for a given | |
1359 | relocation. */ | |
1360 | ||
1361 | static asection * | |
07adf181 AM |
1362 | elf_s390_gc_mark_hook (asection *sec, |
1363 | struct bfd_link_info *info, | |
1364 | Elf_Internal_Rela *rel, | |
1365 | struct elf_link_hash_entry *h, | |
1366 | Elf_Internal_Sym *sym) | |
a85d7ed0 NC |
1367 | { |
1368 | if (h != NULL) | |
07adf181 AM |
1369 | switch (ELF64_R_TYPE (rel->r_info)) |
1370 | { | |
1371 | case R_390_GNU_VTINHERIT: | |
1372 | case R_390_GNU_VTENTRY: | |
1373 | return NULL; | |
1374 | } | |
1375 | ||
1376 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
a85d7ed0 NC |
1377 | } |
1378 | ||
1379 | /* Update the got entry reference counts for the section being removed. */ | |
1380 | ||
b34976b6 | 1381 | static bfd_boolean |
07adf181 AM |
1382 | elf_s390_gc_sweep_hook (bfd *abfd, |
1383 | struct bfd_link_info *info, | |
1384 | asection *sec, | |
1385 | const Elf_Internal_Rela *relocs) | |
a85d7ed0 | 1386 | { |
4dfe6ac6 | 1387 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
1388 | Elf_Internal_Shdr *symtab_hdr; |
1389 | struct elf_link_hash_entry **sym_hashes; | |
1390 | bfd_signed_vma *local_got_refcounts; | |
1391 | const Elf_Internal_Rela *rel, *relend; | |
a85d7ed0 | 1392 | |
7dda2462 TG |
1393 | if (info->relocatable) |
1394 | return TRUE; | |
1395 | ||
4dfe6ac6 NC |
1396 | htab = elf_s390_hash_table (info); |
1397 | if (htab == NULL) | |
1398 | return FALSE; | |
1399 | ||
ec338859 | 1400 | elf_section_data (sec)->local_dynrel = NULL; |
a85d7ed0 | 1401 | |
0ffa91dd | 1402 | symtab_hdr = &elf_symtab_hdr (abfd); |
0451c93c MS |
1403 | sym_hashes = elf_sym_hashes (abfd); |
1404 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
a85d7ed0 NC |
1405 | |
1406 | relend = relocs + sec->reloc_count; | |
1407 | for (rel = relocs; rel < relend; rel++) | |
5236c819 | 1408 | { |
26e41594 AM |
1409 | unsigned long r_symndx; |
1410 | unsigned int r_type; | |
1411 | struct elf_link_hash_entry *h = NULL; | |
1412 | ||
5236c819 | 1413 | r_symndx = ELF64_R_SYM (rel->r_info); |
26e41594 AM |
1414 | if (r_symndx >= symtab_hdr->sh_info) |
1415 | { | |
1416 | struct elf_s390_link_hash_entry *eh; | |
00d8c7a9 AK |
1417 | struct elf_dyn_relocs **pp; |
1418 | struct elf_dyn_relocs *p; | |
5236c819 | 1419 | |
26e41594 | 1420 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3eb128b2 AM |
1421 | while (h->root.type == bfd_link_hash_indirect |
1422 | || h->root.type == bfd_link_hash_warning) | |
1423 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
26e41594 | 1424 | eh = (struct elf_s390_link_hash_entry *) h; |
5236c819 | 1425 | |
26e41594 AM |
1426 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
1427 | if (p->sec == sec) | |
1428 | { | |
1429 | /* Everything must go for SEC. */ | |
1430 | *pp = p->next; | |
1431 | break; | |
1432 | } | |
1433 | } | |
470b557a AK |
1434 | else |
1435 | { | |
1436 | Elf_Internal_Sym *isym; | |
1437 | ||
1438 | /* A local symbol. */ | |
1439 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1440 | abfd, r_symndx); | |
1441 | if (isym == NULL) | |
1442 | return FALSE; | |
1443 | ||
1444 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
1445 | { | |
1446 | struct plt_entry *plt = elf_s390_local_plt (abfd); | |
1447 | if (plt[r_symndx].plt.refcount > 0) | |
1448 | plt[r_symndx].plt.refcount--; | |
1449 | } | |
1450 | } | |
26e41594 AM |
1451 | |
1452 | r_type = ELF64_R_TYPE (rel->r_info); | |
1453 | r_type = elf_s390_tls_transition (info, r_type, h != NULL); | |
69fc87f1 | 1454 | switch (r_type) |
5236c819 | 1455 | { |
69fc87f1 | 1456 | case R_390_TLS_LDM64: |
4dfe6ac6 NC |
1457 | if (htab->tls_ldm_got.refcount > 0) |
1458 | htab->tls_ldm_got.refcount -= 1; | |
69fc87f1 MS |
1459 | break; |
1460 | ||
1461 | case R_390_TLS_GD64: | |
1462 | case R_390_TLS_IE64: | |
1463 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1464 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1465 | case R_390_TLS_GOTIE64: |
1466 | case R_390_TLS_IEENT: | |
5236c819 MS |
1467 | case R_390_GOT12: |
1468 | case R_390_GOT16: | |
bd1ea41b | 1469 | case R_390_GOT20: |
5236c819 MS |
1470 | case R_390_GOT32: |
1471 | case R_390_GOT64: | |
1472 | case R_390_GOTOFF16: | |
1473 | case R_390_GOTOFF32: | |
1474 | case R_390_GOTOFF64: | |
1475 | case R_390_GOTPC: | |
1476 | case R_390_GOTPCDBL: | |
1477 | case R_390_GOTENT: | |
1478 | if (h != NULL) | |
1479 | { | |
1480 | if (h->got.refcount > 0) | |
1481 | h->got.refcount -= 1; | |
1482 | } | |
1483 | else if (local_got_refcounts != NULL) | |
1484 | { | |
1485 | if (local_got_refcounts[r_symndx] > 0) | |
1486 | local_got_refcounts[r_symndx] -= 1; | |
1487 | } | |
26e41594 | 1488 | break; |
a85d7ed0 | 1489 | |
5236c819 MS |
1490 | case R_390_8: |
1491 | case R_390_12: | |
1492 | case R_390_16: | |
bd1ea41b | 1493 | case R_390_20: |
5236c819 MS |
1494 | case R_390_32: |
1495 | case R_390_64: | |
1496 | case R_390_PC16: | |
fb798c50 | 1497 | case R_390_PC12DBL: |
5236c819 | 1498 | case R_390_PC16DBL: |
fb798c50 | 1499 | case R_390_PC24DBL: |
5236c819 MS |
1500 | case R_390_PC32: |
1501 | case R_390_PC32DBL: | |
1502 | case R_390_PC64: | |
26e41594 AM |
1503 | if (info->shared) |
1504 | break; | |
1505 | /* Fall through */ | |
a85d7ed0 | 1506 | |
fb798c50 | 1507 | case R_390_PLT12DBL: |
69fc87f1 | 1508 | case R_390_PLT16DBL: |
fb798c50 | 1509 | case R_390_PLT24DBL: |
69fc87f1 MS |
1510 | case R_390_PLT32: |
1511 | case R_390_PLT32DBL: | |
1512 | case R_390_PLT64: | |
1513 | case R_390_PLTOFF16: | |
1514 | case R_390_PLTOFF32: | |
1515 | case R_390_PLTOFF64: | |
1516 | if (h != NULL) | |
1517 | { | |
1518 | if (h->plt.refcount > 0) | |
1519 | h->plt.refcount -= 1; | |
1520 | } | |
1521 | break; | |
1522 | ||
1523 | case R_390_GOTPLT12: | |
1524 | case R_390_GOTPLT16: | |
bd1ea41b | 1525 | case R_390_GOTPLT20: |
69fc87f1 MS |
1526 | case R_390_GOTPLT32: |
1527 | case R_390_GOTPLT64: | |
1528 | case R_390_GOTPLTENT: | |
1529 | if (h != NULL) | |
1530 | { | |
1531 | if (h->plt.refcount > 0) | |
1532 | { | |
1533 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--; | |
1534 | h->plt.refcount -= 1; | |
1535 | } | |
1536 | } | |
1537 | else if (local_got_refcounts != NULL) | |
1538 | { | |
1539 | if (local_got_refcounts[r_symndx] > 0) | |
1540 | local_got_refcounts[r_symndx] -= 1; | |
1541 | } | |
1542 | break; | |
1543 | ||
5236c819 MS |
1544 | default: |
1545 | break; | |
1546 | } | |
1547 | } | |
a85d7ed0 | 1548 | |
b34976b6 | 1549 | return TRUE; |
a85d7ed0 NC |
1550 | } |
1551 | ||
5236c819 MS |
1552 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
1553 | entry but we found we will not create any. Called when we find we will | |
1554 | not have any PLT for this symbol, by for example | |
1555 | elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
1556 | or elf_s390_size_dynamic_sections if no dynamic sections will be | |
1557 | created (we're only linking static objects). */ | |
1558 | ||
1559 | static void | |
2c3fc389 | 1560 | elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h) |
5236c819 MS |
1561 | { |
1562 | if (h->elf.root.type == bfd_link_hash_warning) | |
1563 | h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link; | |
1564 | ||
1565 | if (h->gotplt_refcount <= 0) | |
1566 | return; | |
1567 | ||
1568 | /* We simply add the number of gotplt references to the number | |
1569 | * of got references for this symbol. */ | |
1570 | h->elf.got.refcount += h->gotplt_refcount; | |
1571 | h->gotplt_refcount = -1; | |
1572 | } | |
1573 | ||
a85d7ed0 NC |
1574 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1575 | regular object. The current definition is in some section of the | |
1576 | dynamic object, but we're not including those sections. We have to | |
1577 | change the definition to something the rest of the link can | |
1578 | understand. */ | |
1579 | ||
b34976b6 | 1580 | static bfd_boolean |
4dfe6ac6 NC |
1581 | elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info, |
1582 | struct elf_link_hash_entry *h) | |
a85d7ed0 | 1583 | { |
0451c93c | 1584 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 | 1585 | asection *s; |
a85d7ed0 | 1586 | |
470b557a AK |
1587 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1588 | if (s390_is_ifunc_symbol_p (h)) | |
1589 | return TRUE; | |
1590 | ||
a85d7ed0 NC |
1591 | /* If this is a function, put it in the procedure linkage table. We |
1592 | will fill in the contents of the procedure linkage table later | |
cedb70c5 | 1593 | (although we could actually do it here). */ |
a85d7ed0 | 1594 | if (h->type == STT_FUNC |
f5385ebf | 1595 | || h->needs_plt) |
a85d7ed0 | 1596 | { |
0451c93c | 1597 | if (h->plt.refcount <= 0 |
8c21ca21 AK |
1598 | || SYMBOL_CALLS_LOCAL (info, h) |
1599 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1600 | && h->root.type == bfd_link_hash_undefweak)) | |
a85d7ed0 NC |
1601 | { |
1602 | /* This case can occur if we saw a PLT32 reloc in an input | |
947216bf AM |
1603 | file, but the symbol was never referred to by a dynamic |
1604 | object, or if all references were garbage collected. In | |
0451c93c MS |
1605 | such a case, we don't actually need to build a procedure |
1606 | linkage table, and we can just do a PC32 reloc instead. */ | |
a85d7ed0 | 1607 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1608 | h->needs_plt = 0; |
5236c819 | 1609 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
a85d7ed0 NC |
1610 | } |
1611 | ||
b34976b6 | 1612 | return TRUE; |
a85d7ed0 | 1613 | } |
bbd7ec4a | 1614 | else |
0451c93c MS |
1615 | /* It's possible that we incorrectly decided a .plt reloc was |
1616 | needed for an R_390_PC32 reloc to a non-function sym in | |
1617 | check_relocs. We can't decide accurately between function and | |
1618 | non-function syms in check-relocs; Objects loaded later in | |
1619 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1620 | h->plt.offset = (bfd_vma) -1; |
a85d7ed0 NC |
1621 | |
1622 | /* If this is a weak symbol, and there is a real definition, the | |
1623 | processor independent code will have arranged for us to see the | |
1624 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1625 | if (h->u.weakdef != NULL) |
a85d7ed0 | 1626 | { |
f6e332e6 AM |
1627 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1628 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1629 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1630 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
64285810 | 1631 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
f6e332e6 | 1632 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 1633 | return TRUE; |
a85d7ed0 NC |
1634 | } |
1635 | ||
1636 | /* This is a reference to a symbol defined by a dynamic object which | |
1637 | is not a function. */ | |
1638 | ||
1639 | /* If we are creating a shared library, we must presume that the | |
1640 | only references to the symbol are via the global offset table. | |
1641 | For such cases we need not do anything here; the relocations will | |
1642 | be handled correctly by relocate_section. */ | |
1643 | if (info->shared) | |
b34976b6 | 1644 | return TRUE; |
a85d7ed0 NC |
1645 | |
1646 | /* If there are no references to this symbol that do not use the | |
1647 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 1648 | if (!h->non_got_ref) |
b34976b6 | 1649 | return TRUE; |
a85d7ed0 | 1650 | |
0451c93c MS |
1651 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1652 | if (info->nocopyreloc) | |
1653 | { | |
f5385ebf | 1654 | h->non_got_ref = 0; |
b34976b6 | 1655 | return TRUE; |
0451c93c MS |
1656 | } |
1657 | ||
64285810 | 1658 | if (ELIMINATE_COPY_RELOCS) |
0451c93c | 1659 | { |
64285810 | 1660 | struct elf_s390_link_hash_entry * eh; |
00d8c7a9 | 1661 | struct elf_dyn_relocs *p; |
0451c93c | 1662 | |
64285810 MS |
1663 | eh = (struct elf_s390_link_hash_entry *) h; |
1664 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1665 | { | |
1666 | s = p->sec->output_section; | |
1667 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1668 | break; | |
1669 | } | |
1670 | ||
1671 | /* If we didn't find any dynamic relocs in read-only sections, then | |
1672 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1673 | if (p == NULL) | |
1674 | { | |
f5385ebf | 1675 | h->non_got_ref = 0; |
64285810 MS |
1676 | return TRUE; |
1677 | } | |
0451c93c MS |
1678 | } |
1679 | ||
a85d7ed0 NC |
1680 | /* We must allocate the symbol in our .dynbss section, which will |
1681 | become part of the .bss section of the executable. There will be | |
1682 | an entry for this symbol in the .dynsym section. The dynamic | |
1683 | object will contain position independent code, so all references | |
1684 | from the dynamic object to this symbol will go through the global | |
1685 | offset table. The dynamic linker will use the .dynsym entry to | |
1686 | determine the address it must put in the global offset table, so | |
1687 | both the dynamic object and the regular object will refer to the | |
1688 | same memory location for the variable. */ | |
1689 | ||
0451c93c | 1690 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
1691 | if (htab == NULL) |
1692 | return FALSE; | |
a85d7ed0 | 1693 | |
0451c93c MS |
1694 | /* We must generate a R_390_COPY reloc to tell the dynamic linker to |
1695 | copy the initial value out of the dynamic object and into the | |
1696 | runtime process image. */ | |
1d7e9d18 | 1697 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
a85d7ed0 | 1698 | { |
eea6121a | 1699 | htab->srelbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 1700 | h->needs_copy = 1; |
a85d7ed0 NC |
1701 | } |
1702 | ||
0451c93c | 1703 | s = htab->sdynbss; |
a85d7ed0 | 1704 | |
027297b7 | 1705 | return _bfd_elf_adjust_dynamic_copy (h, s); |
a85d7ed0 NC |
1706 | } |
1707 | ||
0451c93c MS |
1708 | /* Allocate space in .plt, .got and associated reloc sections for |
1709 | dynamic relocs. */ | |
1710 | ||
b34976b6 | 1711 | static bfd_boolean |
4dfe6ac6 NC |
1712 | allocate_dynrelocs (struct elf_link_hash_entry *h, |
1713 | void * inf) | |
0451c93c MS |
1714 | { |
1715 | struct bfd_link_info *info; | |
1716 | struct elf_s390_link_hash_table *htab; | |
470b557a | 1717 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h; |
00d8c7a9 | 1718 | struct elf_dyn_relocs *p; |
0451c93c | 1719 | |
e92d460e | 1720 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1721 | return TRUE; |
0451c93c MS |
1722 | |
1723 | info = (struct bfd_link_info *) inf; | |
1724 | htab = elf_s390_hash_table (info); | |
4dfe6ac6 NC |
1725 | if (htab == NULL) |
1726 | return FALSE; | |
0451c93c | 1727 | |
470b557a AK |
1728 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
1729 | here if it is defined and referenced in a non-shared object. */ | |
1730 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
1731 | return s390_elf_allocate_ifunc_dyn_relocs (info, h, | |
1732 | &eh->dyn_relocs); | |
1733 | else if (htab->elf.dynamic_sections_created | |
1734 | && h->plt.refcount > 0) | |
0451c93c MS |
1735 | { |
1736 | /* Make sure this symbol is output as a dynamic symbol. | |
1737 | Undefined weak syms won't yet be marked as dynamic. */ | |
1738 | if (h->dynindx == -1 | |
f5385ebf | 1739 | && !h->forced_local) |
0451c93c | 1740 | { |
c152c796 | 1741 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1742 | return FALSE; |
0451c93c MS |
1743 | } |
1744 | ||
82058a73 | 1745 | if (info->shared |
4ec72bde | 1746 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
0451c93c | 1747 | { |
f41345a7 | 1748 | asection *s = htab->elf.splt; |
0451c93c MS |
1749 | |
1750 | /* If this is the first .plt entry, make room for the special | |
1751 | first entry. */ | |
eea6121a AM |
1752 | if (s->size == 0) |
1753 | s->size += PLT_FIRST_ENTRY_SIZE; | |
0451c93c | 1754 | |
eea6121a | 1755 | h->plt.offset = s->size; |
0451c93c MS |
1756 | |
1757 | /* If this symbol is not defined in a regular file, and we are | |
1758 | not generating a shared library, then set the symbol to this | |
1759 | location in the .plt. This is required to make function | |
1760 | pointers compare as equal between the normal executable and | |
1761 | the shared library. */ | |
1762 | if (! info->shared | |
f5385ebf | 1763 | && !h->def_regular) |
0451c93c MS |
1764 | { |
1765 | h->root.u.def.section = s; | |
1766 | h->root.u.def.value = h->plt.offset; | |
1767 | } | |
ec338859 | 1768 | |
0451c93c | 1769 | /* Make room for this entry. */ |
eea6121a | 1770 | s->size += PLT_ENTRY_SIZE; |
ec338859 | 1771 | |
0451c93c MS |
1772 | /* We also need to make an entry in the .got.plt section, which |
1773 | will be placed in the .got section by the linker script. */ | |
f41345a7 | 1774 | htab->elf.sgotplt->size += GOT_ENTRY_SIZE; |
0451c93c MS |
1775 | |
1776 | /* We also need to make an entry in the .rela.plt section. */ | |
f41345a7 | 1777 | htab->elf.srelplt->size += sizeof (Elf64_External_Rela); |
0451c93c MS |
1778 | } |
1779 | else | |
1780 | { | |
1781 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1782 | h->needs_plt = 0; |
5236c819 | 1783 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c MS |
1784 | } |
1785 | } | |
1786 | else | |
1787 | { | |
1788 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1789 | h->needs_plt = 0; |
5236c819 | 1790 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c MS |
1791 | } |
1792 | ||
69fc87f1 MS |
1793 | /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to |
1794 | the binary, we can optimize a bit. IE64 and GOTIE64 get converted | |
1795 | to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT | |
1796 | we can save the dynamic TLS relocation. */ | |
1797 | if (h->got.refcount > 0 | |
1798 | && !info->shared | |
1799 | && h->dynindx == -1 | |
1800 | && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE) | |
1801 | { | |
1802 | if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT) | |
1803 | /* For the GOTIE access without a literal pool entry the offset has | |
1804 | to be stored somewhere. The immediate value in the instruction | |
1805 | is not bit enough so the value is stored in the got. */ | |
1806 | { | |
f41345a7 AK |
1807 | h->got.offset = htab->elf.sgot->size; |
1808 | htab->elf.sgot->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1809 | } |
1810 | else | |
1811 | h->got.offset = (bfd_vma) -1; | |
1812 | } | |
1813 | else if (h->got.refcount > 0) | |
0451c93c MS |
1814 | { |
1815 | asection *s; | |
b34976b6 | 1816 | bfd_boolean dyn; |
69fc87f1 | 1817 | int tls_type = elf_s390_hash_entry(h)->tls_type; |
0451c93c MS |
1818 | |
1819 | /* Make sure this symbol is output as a dynamic symbol. | |
1820 | Undefined weak syms won't yet be marked as dynamic. */ | |
1821 | if (h->dynindx == -1 | |
f5385ebf | 1822 | && !h->forced_local) |
0451c93c | 1823 | { |
c152c796 | 1824 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1825 | return FALSE; |
0451c93c MS |
1826 | } |
1827 | ||
f41345a7 | 1828 | s = htab->elf.sgot; |
eea6121a AM |
1829 | h->got.offset = s->size; |
1830 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1831 | /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */ |
1832 | if (tls_type == GOT_TLS_GD) | |
eea6121a | 1833 | s->size += GOT_ENTRY_SIZE; |
0451c93c | 1834 | dyn = htab->elf.dynamic_sections_created; |
69fc87f1 MS |
1835 | /* R_390_TLS_IE64 needs one dynamic relocation, |
1836 | R_390_TLS_GD64 needs one if local symbol and two if global. */ | |
1837 | if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1838 | || tls_type >= GOT_TLS_IE) | |
f41345a7 | 1839 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); |
69fc87f1 | 1840 | else if (tls_type == GOT_TLS_GD) |
f41345a7 | 1841 | htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela); |
82058a73 MS |
1842 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1843 | || h->root.type != bfd_link_hash_undefweak) | |
1844 | && (info->shared | |
1845 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
f41345a7 | 1846 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); |
0451c93c MS |
1847 | } |
1848 | else | |
1849 | h->got.offset = (bfd_vma) -1; | |
1850 | ||
0451c93c | 1851 | if (eh->dyn_relocs == NULL) |
b34976b6 | 1852 | return TRUE; |
0451c93c MS |
1853 | |
1854 | /* In the shared -Bsymbolic case, discard space allocated for | |
1855 | dynamic pc-relative relocs against symbols which turn out to be | |
1856 | defined in regular objects. For the normal shared case, discard | |
1857 | space for pc-relative relocs that have become local due to symbol | |
1858 | visibility changes. */ | |
1859 | ||
1860 | if (info->shared) | |
1861 | { | |
8c21ca21 | 1862 | if (SYMBOL_CALLS_LOCAL (info, h)) |
0451c93c | 1863 | { |
00d8c7a9 | 1864 | struct elf_dyn_relocs **pp; |
0451c93c MS |
1865 | |
1866 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1867 | { | |
1868 | p->count -= p->pc_count; | |
1869 | p->pc_count = 0; | |
1870 | if (p->count == 0) | |
1871 | *pp = p->next; | |
1872 | else | |
1873 | pp = &p->next; | |
1874 | } | |
1875 | } | |
82058a73 MS |
1876 | |
1877 | /* Also discard relocs on undefined weak syms with non-default | |
1878 | visibility. */ | |
22d606e9 | 1879 | if (eh->dyn_relocs != NULL |
82058a73 | 1880 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
1881 | { |
1882 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
1883 | eh->dyn_relocs = NULL; | |
1884 | ||
1885 | /* Make sure undefined weak symbols are output as a dynamic | |
1886 | symbol in PIEs. */ | |
1887 | else if (h->dynindx == -1 | |
1888 | && !h->forced_local) | |
1889 | { | |
1890 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1891 | return FALSE; | |
1892 | } | |
1893 | } | |
0451c93c | 1894 | } |
64285810 | 1895 | else if (ELIMINATE_COPY_RELOCS) |
0451c93c MS |
1896 | { |
1897 | /* For the non-shared case, discard space for relocs against | |
1898 | symbols which turn out to need copy relocs or are not | |
1899 | dynamic. */ | |
1900 | ||
f5385ebf AM |
1901 | if (!h->non_got_ref |
1902 | && ((h->def_dynamic | |
1903 | && !h->def_regular) | |
0451c93c MS |
1904 | || (htab->elf.dynamic_sections_created |
1905 | && (h->root.type == bfd_link_hash_undefweak | |
1906 | || h->root.type == bfd_link_hash_undefined)))) | |
1907 | { | |
1908 | /* Make sure this symbol is output as a dynamic symbol. | |
1909 | Undefined weak syms won't yet be marked as dynamic. */ | |
1910 | if (h->dynindx == -1 | |
f5385ebf | 1911 | && !h->forced_local) |
0451c93c | 1912 | { |
c152c796 | 1913 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1914 | return FALSE; |
0451c93c MS |
1915 | } |
1916 | ||
1917 | /* If that succeeded, we know we'll be keeping all the | |
1918 | relocs. */ | |
1919 | if (h->dynindx != -1) | |
1920 | goto keep; | |
1921 | } | |
1922 | ||
1923 | eh->dyn_relocs = NULL; | |
1924 | ||
ec338859 | 1925 | keep: ; |
0451c93c MS |
1926 | } |
1927 | ||
1928 | /* Finally, allocate space. */ | |
1929 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1930 | { | |
1931 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 1932 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
0451c93c MS |
1933 | } |
1934 | ||
b34976b6 | 1935 | return TRUE; |
0451c93c MS |
1936 | } |
1937 | ||
1938 | /* Find any dynamic relocs that apply to read-only sections. */ | |
1939 | ||
b34976b6 | 1940 | static bfd_boolean |
2c3fc389 | 1941 | readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
0451c93c MS |
1942 | { |
1943 | struct elf_s390_link_hash_entry *eh; | |
00d8c7a9 | 1944 | struct elf_dyn_relocs *p; |
0451c93c MS |
1945 | |
1946 | eh = (struct elf_s390_link_hash_entry *) h; | |
1947 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1948 | { | |
1949 | asection *s = p->sec->output_section; | |
1950 | ||
1951 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1952 | { | |
1953 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
1954 | ||
1955 | info->flags |= DF_TEXTREL; | |
1956 | ||
1957 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 1958 | return FALSE; |
0451c93c MS |
1959 | } |
1960 | } | |
b34976b6 | 1961 | return TRUE; |
0451c93c MS |
1962 | } |
1963 | ||
a85d7ed0 NC |
1964 | /* Set the sizes of the dynamic sections. */ |
1965 | ||
b34976b6 | 1966 | static bfd_boolean |
4dfe6ac6 NC |
1967 | elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
1968 | struct bfd_link_info *info) | |
a85d7ed0 | 1969 | { |
0451c93c | 1970 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
1971 | bfd *dynobj; |
1972 | asection *s; | |
b34976b6 | 1973 | bfd_boolean relocs; |
0451c93c | 1974 | bfd *ibfd; |
a85d7ed0 | 1975 | |
0451c93c | 1976 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
1977 | if (htab == NULL) |
1978 | return FALSE; | |
1979 | ||
0451c93c MS |
1980 | dynobj = htab->elf.dynobj; |
1981 | if (dynobj == NULL) | |
1982 | abort (); | |
a85d7ed0 | 1983 | |
0451c93c | 1984 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
1985 | { |
1986 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 1987 | if (info->executable) |
a85d7ed0 | 1988 | { |
3d4d4302 | 1989 | s = bfd_get_linker_section (dynobj, ".interp"); |
0451c93c MS |
1990 | if (s == NULL) |
1991 | abort (); | |
eea6121a | 1992 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
a85d7ed0 NC |
1993 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
1994 | } | |
1995 | } | |
a85d7ed0 | 1996 | |
0451c93c MS |
1997 | /* Set up .got offsets for local syms, and space for local dynamic |
1998 | relocs. */ | |
1999 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
a85d7ed0 | 2000 | { |
0451c93c MS |
2001 | bfd_signed_vma *local_got; |
2002 | bfd_signed_vma *end_local_got; | |
69fc87f1 | 2003 | char *local_tls_type; |
0451c93c MS |
2004 | bfd_size_type locsymcount; |
2005 | Elf_Internal_Shdr *symtab_hdr; | |
2006 | asection *srela; | |
470b557a AK |
2007 | struct plt_entry *local_plt; |
2008 | unsigned int i; | |
a85d7ed0 | 2009 | |
0ffa91dd | 2010 | if (! is_s390_elf (ibfd)) |
a85d7ed0 NC |
2011 | continue; |
2012 | ||
0451c93c | 2013 | for (s = ibfd->sections; s != NULL; s = s->next) |
a85d7ed0 | 2014 | { |
00d8c7a9 | 2015 | struct elf_dyn_relocs *p; |
0451c93c | 2016 | |
6edfbbad | 2017 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
a85d7ed0 | 2018 | { |
ec338859 AM |
2019 | if (!bfd_is_abs_section (p->sec) |
2020 | && bfd_is_abs_section (p->sec->output_section)) | |
2021 | { | |
2022 | /* Input section has been discarded, either because | |
2023 | it is a copy of a linkonce section or due to | |
2024 | linker script /DISCARD/, so we'll be discarding | |
2025 | the relocs too. */ | |
2026 | } | |
248866a8 | 2027 | else if (p->count != 0) |
ec338859 AM |
2028 | { |
2029 | srela = elf_section_data (p->sec)->sreloc; | |
eea6121a | 2030 | srela->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
2031 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
2032 | info->flags |= DF_TEXTREL; | |
ec338859 | 2033 | } |
a85d7ed0 NC |
2034 | } |
2035 | } | |
0451c93c MS |
2036 | |
2037 | local_got = elf_local_got_refcounts (ibfd); | |
2038 | if (!local_got) | |
2039 | continue; | |
2040 | ||
0ffa91dd | 2041 | symtab_hdr = &elf_symtab_hdr (ibfd); |
0451c93c MS |
2042 | locsymcount = symtab_hdr->sh_info; |
2043 | end_local_got = local_got + locsymcount; | |
69fc87f1 | 2044 | local_tls_type = elf_s390_local_got_tls_type (ibfd); |
f41345a7 AK |
2045 | s = htab->elf.sgot; |
2046 | srela = htab->elf.srelgot; | |
69fc87f1 | 2047 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
a85d7ed0 | 2048 | { |
0451c93c | 2049 | if (*local_got > 0) |
a85d7ed0 | 2050 | { |
eea6121a AM |
2051 | *local_got = s->size; |
2052 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 | 2053 | if (*local_tls_type == GOT_TLS_GD) |
eea6121a | 2054 | s->size += GOT_ENTRY_SIZE; |
0451c93c | 2055 | if (info->shared) |
eea6121a | 2056 | srela->size += sizeof (Elf64_External_Rela); |
a85d7ed0 NC |
2057 | } |
2058 | else | |
0451c93c | 2059 | *local_got = (bfd_vma) -1; |
a85d7ed0 | 2060 | } |
470b557a AK |
2061 | |
2062 | local_plt = elf_s390_local_plt (ibfd); | |
2063 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
2064 | { | |
2065 | if (local_plt[i].plt.refcount > 0) | |
2066 | { | |
2067 | local_plt[i].plt.offset = htab->elf.iplt->size; | |
2068 | htab->elf.iplt->size += PLT_ENTRY_SIZE; | |
2069 | htab->elf.igotplt->size += GOT_ENTRY_SIZE; | |
2070 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
2071 | } | |
2072 | else | |
2073 | local_plt[i].plt.offset = (bfd_vma) -1; | |
2074 | } | |
0451c93c MS |
2075 | } |
2076 | ||
69fc87f1 MS |
2077 | if (htab->tls_ldm_got.refcount > 0) |
2078 | { | |
2079 | /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64 | |
2080 | relocs. */ | |
f41345a7 AK |
2081 | htab->tls_ldm_got.offset = htab->elf.sgot->size; |
2082 | htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE; | |
2083 | htab->elf.srelgot->size += sizeof (Elf64_External_Rela); | |
69fc87f1 MS |
2084 | } |
2085 | else | |
2086 | htab->tls_ldm_got.offset = -1; | |
2087 | ||
0451c93c MS |
2088 | /* Allocate global sym .plt and .got entries, and space for global |
2089 | sym dynamic relocs. */ | |
2c3fc389 | 2090 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
0451c93c MS |
2091 | |
2092 | /* We now have determined the sizes of the various dynamic sections. | |
2093 | Allocate memory for them. */ | |
b34976b6 | 2094 | relocs = FALSE; |
0451c93c MS |
2095 | for (s = dynobj->sections; s != NULL; s = s->next) |
2096 | { | |
2097 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2098 | continue; | |
2099 | ||
f41345a7 AK |
2100 | if (s == htab->elf.splt |
2101 | || s == htab->elf.sgot | |
2102 | || s == htab->elf.sgotplt | |
470b557a AK |
2103 | || s == htab->sdynbss |
2104 | || s == htab->elf.iplt | |
2105 | || s == htab->elf.igotplt | |
2106 | || s == htab->irelifunc) | |
0451c93c MS |
2107 | { |
2108 | /* Strip this section if we don't need it; see the | |
2109 | comment below. */ | |
2110 | } | |
0112cd26 | 2111 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
0451c93c | 2112 | { |
f41345a7 | 2113 | if (s->size != 0 && s != htab->elf.srelplt) |
b34976b6 | 2114 | relocs = TRUE; |
ec338859 | 2115 | |
0451c93c MS |
2116 | /* We use the reloc_count field as a counter if we need |
2117 | to copy relocs into the output file. */ | |
2118 | s->reloc_count = 0; | |
2119 | } | |
2120 | else | |
a85d7ed0 NC |
2121 | { |
2122 | /* It's not one of our sections, so don't allocate space. */ | |
2123 | continue; | |
2124 | } | |
2125 | ||
eea6121a | 2126 | if (s->size == 0) |
a85d7ed0 | 2127 | { |
0451c93c MS |
2128 | /* If we don't need this section, strip it from the |
2129 | output file. This is to handle .rela.bss and | |
2130 | .rela.plt. We must create it in | |
2131 | create_dynamic_sections, because it must be created | |
2132 | before the linker maps input sections to output | |
2133 | sections. The linker does that before | |
2134 | adjust_dynamic_symbol is called, and it is that | |
2135 | function which decides whether anything needs to go | |
2136 | into these sections. */ | |
2137 | ||
8423293d | 2138 | s->flags |= SEC_EXCLUDE; |
a85d7ed0 NC |
2139 | continue; |
2140 | } | |
2141 | ||
c456f082 AM |
2142 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2143 | continue; | |
2144 | ||
0451c93c MS |
2145 | /* Allocate memory for the section contents. We use bfd_zalloc |
2146 | here in case unused entries are not reclaimed before the | |
2147 | section's contents are written out. This should not happen, | |
2148 | but this way if it does, we get a R_390_NONE reloc instead | |
2149 | of garbage. */ | |
eea6121a | 2150 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
0451c93c | 2151 | if (s->contents == NULL) |
b34976b6 | 2152 | return FALSE; |
a85d7ed0 NC |
2153 | } |
2154 | ||
0451c93c | 2155 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
2156 | { |
2157 | /* Add some entries to the .dynamic section. We fill in the | |
2158 | values later, in elf_s390_finish_dynamic_sections, but we | |
2159 | must add the entries now so that we get the correct size for | |
2160 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2161 | dynamic linker and used by the debugger. */ | |
dc810e39 | 2162 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2163 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 2164 | |
36af4a4e | 2165 | if (info->executable) |
a85d7ed0 | 2166 | { |
dc810e39 | 2167 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2168 | return FALSE; |
a85d7ed0 NC |
2169 | } |
2170 | ||
f41345a7 | 2171 | if (htab->elf.splt->size != 0) |
a85d7ed0 | 2172 | { |
dc810e39 AM |
2173 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2174 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2175 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2176 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2177 | return FALSE; |
a85d7ed0 NC |
2178 | } |
2179 | ||
2180 | if (relocs) | |
947216bf AM |
2181 | { |
2182 | if (!add_dynamic_entry (DT_RELA, 0) | |
2183 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2184 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 2185 | return FALSE; |
ec338859 | 2186 | |
0451c93c MS |
2187 | /* If any dynamic relocs apply to a read-only section, |
2188 | then we need a DT_TEXTREL entry. */ | |
248866a8 AM |
2189 | if ((info->flags & DF_TEXTREL) == 0) |
2190 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, | |
2c3fc389 | 2191 | info); |
ec338859 | 2192 | |
0451c93c MS |
2193 | if ((info->flags & DF_TEXTREL) != 0) |
2194 | { | |
2195 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2196 | return FALSE; |
0451c93c | 2197 | } |
a85d7ed0 NC |
2198 | } |
2199 | } | |
dc810e39 | 2200 | #undef add_dynamic_entry |
a85d7ed0 | 2201 | |
b34976b6 | 2202 | return TRUE; |
a85d7ed0 NC |
2203 | } |
2204 | ||
69fc87f1 MS |
2205 | /* Return the base VMA address which should be subtracted from real addresses |
2206 | when resolving @dtpoff relocation. | |
2207 | This is PT_TLS segment p_vaddr. */ | |
2208 | ||
2209 | static bfd_vma | |
2c3fc389 | 2210 | dtpoff_base (struct bfd_link_info *info) |
69fc87f1 | 2211 | { |
e1918d23 AM |
2212 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2213 | if (elf_hash_table (info)->tls_sec == NULL) | |
69fc87f1 | 2214 | return 0; |
e1918d23 | 2215 | return elf_hash_table (info)->tls_sec->vma; |
69fc87f1 MS |
2216 | } |
2217 | ||
2218 | /* Return the relocation value for @tpoff relocation | |
2219 | if STT_TLS virtual address is ADDRESS. */ | |
2220 | ||
2221 | static bfd_vma | |
2c3fc389 | 2222 | tpoff (struct bfd_link_info *info, bfd_vma address) |
69fc87f1 | 2223 | { |
e1918d23 | 2224 | struct elf_link_hash_table *htab = elf_hash_table (info); |
69fc87f1 | 2225 | |
e1918d23 AM |
2226 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2227 | if (htab->tls_sec == NULL) | |
69fc87f1 | 2228 | return 0; |
e1918d23 | 2229 | return htab->tls_size + htab->tls_sec->vma - address; |
69fc87f1 MS |
2230 | } |
2231 | ||
2232 | /* Complain if TLS instruction relocation is against an invalid | |
2233 | instruction. */ | |
2234 | ||
2235 | static void | |
2c3fc389 NC |
2236 | invalid_tls_insn (bfd *input_bfd, |
2237 | asection *input_section, | |
2238 | Elf_Internal_Rela *rel) | |
69fc87f1 MS |
2239 | { |
2240 | reloc_howto_type *howto; | |
2241 | ||
2242 | howto = elf_howto_table + ELF64_R_TYPE (rel->r_info); | |
2243 | (*_bfd_error_handler) | |
d003868e AM |
2244 | (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"), |
2245 | input_bfd, | |
2246 | input_section, | |
69fc87f1 MS |
2247 | (long) rel->r_offset, |
2248 | howto->name); | |
77df2968 | 2249 | bfd_set_error (bfd_error_bad_value); |
69fc87f1 MS |
2250 | } |
2251 | ||
a85d7ed0 NC |
2252 | /* Relocate a 390 ELF section. */ |
2253 | ||
b34976b6 | 2254 | static bfd_boolean |
4dfe6ac6 NC |
2255 | elf_s390_relocate_section (bfd *output_bfd, |
2256 | struct bfd_link_info *info, | |
2257 | bfd *input_bfd, | |
2258 | asection *input_section, | |
2259 | bfd_byte *contents, | |
2260 | Elf_Internal_Rela *relocs, | |
2261 | Elf_Internal_Sym *local_syms, | |
2262 | asection **local_sections) | |
a85d7ed0 | 2263 | { |
0451c93c | 2264 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
2265 | Elf_Internal_Shdr *symtab_hdr; |
2266 | struct elf_link_hash_entry **sym_hashes; | |
2267 | bfd_vma *local_got_offsets; | |
a85d7ed0 NC |
2268 | Elf_Internal_Rela *rel; |
2269 | Elf_Internal_Rela *relend; | |
2270 | ||
0ffa91dd NC |
2271 | BFD_ASSERT (is_s390_elf (input_bfd)); |
2272 | ||
0451c93c | 2273 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
2274 | if (htab == NULL) |
2275 | return FALSE; | |
2276 | ||
0ffa91dd | 2277 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
a85d7ed0 NC |
2278 | sym_hashes = elf_sym_hashes (input_bfd); |
2279 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2280 | ||
a85d7ed0 NC |
2281 | rel = relocs; |
2282 | relend = relocs + input_section->reloc_count; | |
2283 | for (; rel < relend; rel++) | |
2284 | { | |
5236c819 | 2285 | unsigned int r_type; |
a85d7ed0 NC |
2286 | reloc_howto_type *howto; |
2287 | unsigned long r_symndx; | |
2288 | struct elf_link_hash_entry *h; | |
2289 | Elf_Internal_Sym *sym; | |
2290 | asection *sec; | |
0451c93c | 2291 | bfd_vma off; |
a85d7ed0 | 2292 | bfd_vma relocation; |
b34976b6 | 2293 | bfd_boolean unresolved_reloc; |
a85d7ed0 | 2294 | bfd_reloc_status_type r; |
69fc87f1 | 2295 | int tls_type; |
470b557a | 2296 | asection *base_got = htab->elf.sgot; |
a85d7ed0 NC |
2297 | |
2298 | r_type = ELF64_R_TYPE (rel->r_info); | |
0451c93c | 2299 | if (r_type == (int) R_390_GNU_VTINHERIT |
947216bf AM |
2300 | || r_type == (int) R_390_GNU_VTENTRY) |
2301 | continue; | |
5236c819 | 2302 | if (r_type >= (int) R_390_max) |
a85d7ed0 NC |
2303 | { |
2304 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2305 | return FALSE; |
a85d7ed0 | 2306 | } |
a85d7ed0 | 2307 | |
b491616a | 2308 | howto = elf_howto_table + r_type; |
a85d7ed0 | 2309 | r_symndx = ELF64_R_SYM (rel->r_info); |
5236c819 | 2310 | |
a85d7ed0 NC |
2311 | h = NULL; |
2312 | sym = NULL; | |
2313 | sec = NULL; | |
b34976b6 | 2314 | unresolved_reloc = FALSE; |
a85d7ed0 NC |
2315 | if (r_symndx < symtab_hdr->sh_info) |
2316 | { | |
2317 | sym = local_syms + r_symndx; | |
2318 | sec = local_sections[r_symndx]; | |
470b557a AK |
2319 | |
2320 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
2321 | { | |
2322 | struct plt_entry *local_plt = elf_s390_local_plt (input_bfd); | |
2323 | if (local_plt == NULL) | |
2324 | return FALSE; | |
2325 | ||
2326 | /* Address of the PLT slot. */ | |
2327 | relocation = (htab->elf.iplt->output_section->vma | |
2328 | + htab->elf.iplt->output_offset | |
2329 | + local_plt[r_symndx].plt.offset); | |
2330 | ||
2331 | switch (r_type) | |
2332 | { | |
31db78f6 AK |
2333 | case R_390_PLTOFF16: |
2334 | case R_390_PLTOFF32: | |
2335 | case R_390_PLTOFF64: | |
2336 | relocation -= htab->elf.sgot->output_section->vma; | |
2337 | break; | |
470b557a AK |
2338 | case R_390_GOTPLT12: |
2339 | case R_390_GOTPLT16: | |
2340 | case R_390_GOTPLT20: | |
2341 | case R_390_GOTPLT32: | |
2342 | case R_390_GOTPLT64: | |
2343 | case R_390_GOTPLTENT: | |
2344 | case R_390_GOT12: | |
2345 | case R_390_GOT16: | |
2346 | case R_390_GOT20: | |
2347 | case R_390_GOT32: | |
2348 | case R_390_GOT64: | |
2349 | case R_390_GOTENT: | |
2350 | { | |
2351 | /* Write the PLT slot address into the GOT slot. */ | |
2352 | bfd_put_64 (output_bfd, relocation, | |
2353 | htab->elf.sgot->contents + | |
2354 | local_got_offsets[r_symndx]); | |
2355 | relocation = (local_got_offsets[r_symndx] + | |
2356 | htab->elf.sgot->output_offset); | |
2357 | ||
2358 | if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT) | |
2359 | relocation += htab->elf.sgot->output_section->vma; | |
2360 | break; | |
2361 | } | |
2362 | default: | |
2363 | break; | |
2364 | } | |
2365 | /* The output section is needed later in | |
2366 | finish_dynamic_section when creating the dynamic | |
2367 | relocation. */ | |
2368 | local_plt[r_symndx].sec = sec; | |
2369 | goto do_relocation; | |
2370 | } | |
2371 | else | |
2372 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
a85d7ed0 NC |
2373 | } |
2374 | else | |
2375 | { | |
560e09e9 | 2376 | bfd_boolean warned ATTRIBUTE_UNUSED; |
62d887d4 | 2377 | bfd_boolean ignored ATTRIBUTE_UNUSED; |
0451c93c | 2378 | |
b2a8e766 AM |
2379 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2380 | r_symndx, symtab_hdr, sym_hashes, | |
2381 | h, sec, relocation, | |
62d887d4 | 2382 | unresolved_reloc, warned, ignored); |
a85d7ed0 NC |
2383 | } |
2384 | ||
dbaa2011 | 2385 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 2386 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 2387 | rel, 1, relend, howto, 0, contents); |
ab96bf03 AM |
2388 | |
2389 | if (info->relocatable) | |
2390 | continue; | |
2391 | ||
a85d7ed0 NC |
2392 | switch (r_type) |
2393 | { | |
5236c819 MS |
2394 | case R_390_GOTPLT12: |
2395 | case R_390_GOTPLT16: | |
bd1ea41b | 2396 | case R_390_GOTPLT20: |
5236c819 MS |
2397 | case R_390_GOTPLT32: |
2398 | case R_390_GOTPLT64: | |
2399 | case R_390_GOTPLTENT: | |
2400 | /* There are three cases for a GOTPLT relocation. 1) The | |
2401 | relocation is against the jump slot entry of a plt that | |
2402 | will get emitted to the output file. 2) The relocation | |
2403 | is against the jump slot of a plt entry that has been | |
2404 | removed. elf_s390_adjust_gotplt has created a GOT entry | |
2405 | as replacement. 3) The relocation is against a local symbol. | |
2406 | Cases 2) and 3) are the same as the GOT relocation code | |
2407 | so we just have to test for case 1 and fall through for | |
2408 | the other two. */ | |
2409 | if (h != NULL && h->plt.offset != (bfd_vma) -1) | |
2410 | { | |
2411 | bfd_vma plt_index; | |
2412 | ||
470b557a AK |
2413 | if (s390_is_ifunc_symbol_p (h)) |
2414 | { | |
2415 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; | |
2416 | relocation = (plt_index * GOT_ENTRY_SIZE + | |
2417 | htab->elf.igotplt->output_offset); | |
2418 | if (r_type == R_390_GOTPLTENT) | |
2419 | relocation += htab->elf.igotplt->output_section->vma; | |
2420 | } | |
2421 | else | |
2422 | { | |
2423 | /* Calc. index no. | |
2424 | Current offset - size first entry / entry size. */ | |
2425 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / | |
2426 | PLT_ENTRY_SIZE; | |
2427 | ||
2428 | /* Offset in GOT is PLT index plus GOT headers(3) | |
2429 | times 4, addr & GOT addr. */ | |
2430 | relocation = (plt_index + 3) * GOT_ENTRY_SIZE; | |
2431 | if (r_type == R_390_GOTPLTENT) | |
2432 | relocation += htab->elf.sgot->output_section->vma; | |
2433 | } | |
5236c819 | 2434 | unresolved_reloc = FALSE; |
5236c819 MS |
2435 | break; |
2436 | } | |
2437 | /* Fall through. */ | |
2438 | ||
947216bf AM |
2439 | case R_390_GOT12: |
2440 | case R_390_GOT16: | |
bd1ea41b | 2441 | case R_390_GOT20: |
947216bf AM |
2442 | case R_390_GOT32: |
2443 | case R_390_GOT64: | |
2444 | case R_390_GOTENT: | |
2445 | /* Relocation is to the entry for this symbol in the global | |
2446 | offset table. */ | |
470b557a | 2447 | if (base_got == NULL) |
0451c93c | 2448 | abort (); |
a85d7ed0 | 2449 | |
947216bf AM |
2450 | if (h != NULL) |
2451 | { | |
b34976b6 | 2452 | bfd_boolean dyn; |
a85d7ed0 | 2453 | |
947216bf | 2454 | off = h->got.offset; |
0451c93c | 2455 | dyn = htab->elf.dynamic_sections_created; |
470b557a AK |
2456 | |
2457 | if (s390_is_ifunc_symbol_p (h)) | |
2458 | { | |
2459 | BFD_ASSERT (h->plt.offset != (bfd_vma) -1); | |
2460 | if (off == (bfd_vma)-1) | |
2461 | { | |
2462 | /* No explicit GOT usage so redirect to the | |
2463 | got.iplt slot. */ | |
2464 | base_got = htab->elf.igotplt; | |
2465 | off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE; | |
2466 | } | |
2467 | else | |
2468 | { | |
2469 | /* Explicit GOT slots must contain the address | |
2470 | of the PLT slot. This will be handled in | |
2471 | finish_dynamic_symbol. */ | |
2472 | } | |
2473 | } | |
2474 | else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
2475 | || (info->shared | |
2476 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
2477 | || (ELF_ST_VISIBILITY (h->other) | |
2478 | && h->root.type == bfd_link_hash_undefweak)) | |
947216bf AM |
2479 | { |
2480 | /* This is actually a static link, or it is a | |
2481 | -Bsymbolic link and the symbol is defined | |
2482 | locally, or the symbol was forced to be local | |
2483 | because of a version file. We must initialize | |
2484 | this entry in the global offset table. Since the | |
2485 | offset must always be a multiple of 2, we use the | |
2486 | least significant bit to record whether we have | |
2487 | initialized it already. | |
2488 | ||
2489 | When doing a dynamic link, we create a .rel.got | |
2490 | relocation entry to initialize the value. This | |
2491 | is done in the finish_dynamic_symbol routine. */ | |
2492 | if ((off & 1) != 0) | |
2493 | off &= ~1; | |
2494 | else | |
2495 | { | |
a85d7ed0 | 2496 | bfd_put_64 (output_bfd, relocation, |
470b557a | 2497 | base_got->contents + off); |
947216bf AM |
2498 | h->got.offset |= 1; |
2499 | } | |
a63cc5f7 AK |
2500 | |
2501 | if ((h->def_regular | |
2502 | && info->shared | |
2503 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
2504 | /* lgrl rx,sym@GOTENT -> larl rx, sym */ | |
2505 | && ((r_type == R_390_GOTENT | |
2506 | && (bfd_get_16 (input_bfd, | |
2507 | contents + rel->r_offset - 2) | |
2508 | & 0xff0f) == 0xc408) | |
2509 | /* lg rx, sym@GOT(r12) -> larl rx, sym */ | |
2510 | || (r_type == R_390_GOT20 | |
2511 | && (bfd_get_32 (input_bfd, | |
2512 | contents + rel->r_offset - 2) | |
2513 | & 0xff00f000) == 0xe300c000 | |
2514 | && bfd_get_8 (input_bfd, | |
2515 | contents + rel->r_offset + 3) == 0x04))) | |
2516 | ||
2517 | { | |
2518 | unsigned short new_insn = | |
2519 | (0xc000 | (bfd_get_8 (input_bfd, | |
2520 | contents + rel->r_offset - 1) & 0xf0)); | |
2521 | bfd_put_16 (output_bfd, new_insn, | |
2522 | contents + rel->r_offset - 2); | |
2523 | r_type = R_390_PC32DBL; | |
2524 | rel->r_addend = 2; | |
2525 | howto = elf_howto_table + r_type; | |
2526 | relocation = h->root.u.def.value | |
2527 | + h->root.u.def.section->output_section->vma | |
2528 | + h->root.u.def.section->output_offset; | |
2529 | goto do_relocation; | |
2530 | } | |
947216bf | 2531 | } |
0451c93c | 2532 | else |
b34976b6 | 2533 | unresolved_reloc = FALSE; |
947216bf AM |
2534 | } |
2535 | else | |
2536 | { | |
0451c93c MS |
2537 | if (local_got_offsets == NULL) |
2538 | abort (); | |
a85d7ed0 | 2539 | |
947216bf | 2540 | off = local_got_offsets[r_symndx]; |
a85d7ed0 | 2541 | |
947216bf AM |
2542 | /* The offset must always be a multiple of 8. We use |
2543 | the least significant bit to record whether we have | |
2544 | already generated the necessary reloc. */ | |
2545 | if ((off & 1) != 0) | |
2546 | off &= ~1; | |
2547 | else | |
2548 | { | |
2549 | bfd_put_64 (output_bfd, relocation, | |
f41345a7 | 2550 | htab->elf.sgot->contents + off); |
a85d7ed0 | 2551 | |
947216bf AM |
2552 | if (info->shared) |
2553 | { | |
2554 | asection *s; | |
2555 | Elf_Internal_Rela outrel; | |
2556 | bfd_byte *loc; | |
a85d7ed0 | 2557 | |
f41345a7 | 2558 | s = htab->elf.srelgot; |
947216bf | 2559 | if (s == NULL) |
0451c93c | 2560 | abort (); |
a85d7ed0 | 2561 | |
f41345a7 AK |
2562 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2563 | + htab->elf.sgot->output_offset | |
947216bf AM |
2564 | + off); |
2565 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); | |
a85d7ed0 | 2566 | outrel.r_addend = relocation; |
947216bf AM |
2567 | loc = s->contents; |
2568 | loc += s->reloc_count++ * sizeof (Elf64_External_Rela); | |
2569 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2570 | } | |
a85d7ed0 | 2571 | |
947216bf AM |
2572 | local_got_offsets[r_symndx] |= 1; |
2573 | } | |
2574 | } | |
a85d7ed0 | 2575 | |
0451c93c MS |
2576 | if (off >= (bfd_vma) -2) |
2577 | abort (); | |
2578 | ||
470b557a | 2579 | relocation = base_got->output_offset + off; |
0451c93c | 2580 | |
ae9a127f NC |
2581 | /* For @GOTENT the relocation is against the offset between |
2582 | the instruction and the symbols entry in the GOT and not | |
2583 | between the start of the GOT and the symbols entry. We | |
2584 | add the vma of the GOT to get the correct value. */ | |
5236c819 MS |
2585 | if ( r_type == R_390_GOTENT |
2586 | || r_type == R_390_GOTPLTENT) | |
470b557a | 2587 | relocation += base_got->output_section->vma; |
a85d7ed0 | 2588 | |
947216bf | 2589 | break; |
99c79b2e | 2590 | |
5236c819 MS |
2591 | case R_390_GOTOFF16: |
2592 | case R_390_GOTOFF32: | |
2593 | case R_390_GOTOFF64: | |
947216bf AM |
2594 | /* Relocation is relative to the start of the global offset |
2595 | table. */ | |
a85d7ed0 | 2596 | |
947216bf AM |
2597 | /* Note that sgot->output_offset is not involved in this |
2598 | calculation. We always want the start of .got. If we | |
2599 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
2600 | permitted by the ABI, we might have to change this | |
2601 | calculation. */ | |
f41345a7 | 2602 | relocation -= htab->elf.sgot->output_section->vma; |
947216bf | 2603 | break; |
a85d7ed0 | 2604 | |
947216bf | 2605 | case R_390_GOTPC: |
a85d7ed0 | 2606 | case R_390_GOTPCDBL: |
947216bf | 2607 | /* Use global offset table as symbol value. */ |
f41345a7 | 2608 | relocation = htab->elf.sgot->output_section->vma; |
b34976b6 | 2609 | unresolved_reloc = FALSE; |
947216bf | 2610 | break; |
a85d7ed0 | 2611 | |
fb798c50 | 2612 | case R_390_PLT12DBL: |
947216bf | 2613 | case R_390_PLT16DBL: |
fb798c50 | 2614 | case R_390_PLT24DBL: |
947216bf AM |
2615 | case R_390_PLT32: |
2616 | case R_390_PLT32DBL: | |
2617 | case R_390_PLT64: | |
2618 | /* Relocation is to the entry for this symbol in the | |
2619 | procedure linkage table. */ | |
a85d7ed0 | 2620 | |
947216bf AM |
2621 | /* Resolve a PLT32 reloc against a local symbol directly, |
2622 | without using the procedure linkage table. */ | |
2623 | if (h == NULL) | |
2624 | break; | |
a85d7ed0 | 2625 | |
947216bf | 2626 | if (h->plt.offset == (bfd_vma) -1 |
31db78f6 | 2627 | || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h))) |
947216bf AM |
2628 | { |
2629 | /* We didn't make a PLT entry for this symbol. This | |
2630 | happens when statically linking PIC code, or when | |
2631 | using -Bsymbolic. */ | |
2632 | break; | |
2633 | } | |
470b557a AK |
2634 | if (s390_is_ifunc_symbol_p (h)) |
2635 | relocation = (htab->elf.iplt->output_section->vma | |
2636 | + htab->elf.iplt->output_offset | |
2637 | + h->plt.offset); | |
2638 | else | |
2639 | relocation = (htab->elf.splt->output_section->vma | |
2640 | + htab->elf.splt->output_offset | |
2641 | + h->plt.offset); | |
b34976b6 | 2642 | unresolved_reloc = FALSE; |
26e41594 | 2643 | break; |
5236c819 MS |
2644 | |
2645 | case R_390_PLTOFF16: | |
2646 | case R_390_PLTOFF32: | |
2647 | case R_390_PLTOFF64: | |
26e41594 AM |
2648 | /* Relocation is to the entry for this symbol in the |
2649 | procedure linkage table relative to the start of the GOT. */ | |
5236c819 MS |
2650 | |
2651 | /* For local symbols or if we didn't make a PLT entry for | |
2652 | this symbol resolve the symbol directly. */ | |
31db78f6 | 2653 | if (h == NULL |
5236c819 | 2654 | || h->plt.offset == (bfd_vma) -1 |
31db78f6 | 2655 | || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h))) |
5236c819 | 2656 | { |
f41345a7 | 2657 | relocation -= htab->elf.sgot->output_section->vma; |
5236c819 MS |
2658 | break; |
2659 | } | |
2660 | ||
470b557a AK |
2661 | if (s390_is_ifunc_symbol_p (h)) |
2662 | relocation = (htab->elf.iplt->output_section->vma | |
2663 | + htab->elf.iplt->output_offset | |
2664 | + h->plt.offset | |
2665 | - htab->elf.sgot->output_section->vma); | |
2666 | else | |
2667 | relocation = (htab->elf.splt->output_section->vma | |
2668 | + htab->elf.splt->output_offset | |
2669 | + h->plt.offset | |
2670 | - htab->elf.sgot->output_section->vma); | |
5236c819 | 2671 | unresolved_reloc = FALSE; |
947216bf AM |
2672 | break; |
2673 | ||
2674 | case R_390_8: | |
2675 | case R_390_16: | |
2676 | case R_390_32: | |
2677 | case R_390_64: | |
2678 | case R_390_PC16: | |
fb798c50 | 2679 | case R_390_PC12DBL: |
947216bf | 2680 | case R_390_PC16DBL: |
fb798c50 | 2681 | case R_390_PC24DBL: |
947216bf | 2682 | case R_390_PC32: |
a85d7ed0 | 2683 | case R_390_PC32DBL: |
947216bf | 2684 | case R_390_PC64: |
470b557a AK |
2685 | |
2686 | if (h != NULL | |
2687 | && s390_is_ifunc_symbol_p (h) | |
2688 | && h->def_regular) | |
2689 | { | |
2690 | if (!info->shared || !h->non_got_ref) | |
2691 | { | |
2692 | /* For a non-shared object STT_GNU_IFUNC symbol must | |
2693 | go through PLT. */ | |
2694 | relocation = (htab->elf.iplt->output_section->vma | |
2695 | + htab->elf.iplt->output_offset | |
2696 | + h ->plt.offset); | |
2697 | goto do_relocation; | |
2698 | } | |
2699 | else | |
2700 | { | |
2701 | /* For shared objects a runtime relocation is needed. */ | |
2702 | ||
2703 | Elf_Internal_Rela outrel; | |
2704 | asection *sreloc; | |
2705 | ||
2706 | /* Need a dynamic relocation to get the real function | |
2707 | address. */ | |
2708 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
2709 | info, | |
2710 | input_section, | |
2711 | rel->r_offset); | |
2712 | if (outrel.r_offset == (bfd_vma) -1 | |
2713 | || outrel.r_offset == (bfd_vma) -2) | |
2714 | abort (); | |
2715 | ||
2716 | outrel.r_offset += (input_section->output_section->vma | |
2717 | + input_section->output_offset); | |
2718 | ||
2719 | if (h->dynindx == -1 | |
2720 | || h->forced_local | |
2721 | || info->executable) | |
2722 | { | |
2723 | /* This symbol is resolved locally. */ | |
2724 | outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE); | |
2725 | outrel.r_addend = (h->root.u.def.value | |
2726 | + h->root.u.def.section->output_section->vma | |
2727 | + h->root.u.def.section->output_offset); | |
2728 | } | |
2729 | else | |
2730 | { | |
2731 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); | |
2732 | outrel.r_addend = 0; | |
2733 | } | |
2734 | ||
2735 | sreloc = htab->elf.irelifunc; | |
2736 | elf_append_rela (output_bfd, sreloc, &outrel); | |
2737 | ||
2738 | /* If this reloc is against an external symbol, we | |
2739 | do not want to fiddle with the addend. Otherwise, | |
2740 | we need to include the symbol value so that it | |
2741 | becomes an addend for the dynamic reloc. For an | |
2742 | internal symbol, we have updated addend. */ | |
2743 | continue; | |
2744 | } | |
2745 | } | |
2746 | ||
b1e24c02 | 2747 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
2748 | break; |
2749 | ||
947216bf | 2750 | if ((info->shared |
82058a73 MS |
2751 | && (h == NULL |
2752 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2753 | || h->root.type != bfd_link_hash_undefweak) | |
0451c93c | 2754 | && ((r_type != R_390_PC16 |
fb798c50 | 2755 | && r_type != R_390_PC12DBL |
0451c93c | 2756 | && r_type != R_390_PC16DBL |
fb798c50 | 2757 | && r_type != R_390_PC24DBL |
0451c93c MS |
2758 | && r_type != R_390_PC32 |
2759 | && r_type != R_390_PC32DBL | |
2760 | && r_type != R_390_PC64) | |
8c21ca21 | 2761 | || !SYMBOL_CALLS_LOCAL (info, h))) |
64285810 MS |
2762 | || (ELIMINATE_COPY_RELOCS |
2763 | && !info->shared | |
0451c93c MS |
2764 | && h != NULL |
2765 | && h->dynindx != -1 | |
f5385ebf AM |
2766 | && !h->non_got_ref |
2767 | && ((h->def_dynamic | |
2768 | && !h->def_regular) | |
0451c93c MS |
2769 | || h->root.type == bfd_link_hash_undefweak |
2770 | || h->root.type == bfd_link_hash_undefined))) | |
947216bf AM |
2771 | { |
2772 | Elf_Internal_Rela outrel; | |
b34976b6 | 2773 | bfd_boolean skip, relocate; |
0451c93c | 2774 | asection *sreloc; |
947216bf | 2775 | bfd_byte *loc; |
a85d7ed0 | 2776 | |
947216bf AM |
2777 | /* When generating a shared object, these relocations |
2778 | are copied into the output file to be resolved at run | |
2779 | time. */ | |
b34976b6 AM |
2780 | skip = FALSE; |
2781 | relocate = FALSE; | |
a85d7ed0 | 2782 | |
c629eae0 JJ |
2783 | outrel.r_offset = |
2784 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2785 | rel->r_offset); | |
2786 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2787 | skip = TRUE; |
0bb2d96a | 2788 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2789 | skip = TRUE, relocate = TRUE; |
a85d7ed0 | 2790 | |
947216bf AM |
2791 | outrel.r_offset += (input_section->output_section->vma |
2792 | + input_section->output_offset); | |
a85d7ed0 | 2793 | |
947216bf | 2794 | if (skip) |
0bb2d96a | 2795 | memset (&outrel, 0, sizeof outrel); |
947216bf | 2796 | else if (h != NULL |
0451c93c MS |
2797 | && h->dynindx != -1 |
2798 | && (r_type == R_390_PC16 | |
fb798c50 | 2799 | || r_type == R_390_PC12DBL |
0451c93c | 2800 | || r_type == R_390_PC16DBL |
fb798c50 | 2801 | || r_type == R_390_PC24DBL |
0451c93c MS |
2802 | || r_type == R_390_PC32 |
2803 | || r_type == R_390_PC32DBL | |
2804 | || r_type == R_390_PC64 | |
2805 | || !info->shared | |
8c21ca21 | 2806 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 2807 | || !h->def_regular)) |
947216bf AM |
2808 | { |
2809 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); | |
27018c3f | 2810 | outrel.r_addend = rel->r_addend; |
947216bf AM |
2811 | } |
2812 | else | |
2813 | { | |
0451c93c | 2814 | /* This symbol is local, or marked to become local. */ |
90ced0dd | 2815 | outrel.r_addend = relocation + rel->r_addend; |
b5727d75 MS |
2816 | if (r_type == R_390_64) |
2817 | { | |
2818 | relocate = TRUE; | |
2819 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); | |
b5727d75 MS |
2820 | } |
2821 | else | |
2822 | { | |
2823 | long sindx; | |
2824 | ||
90ced0dd | 2825 | if (bfd_is_abs_section (sec)) |
b5727d75 MS |
2826 | sindx = 0; |
2827 | else if (sec == NULL || sec->owner == NULL) | |
2828 | { | |
2829 | bfd_set_error(bfd_error_bad_value); | |
2830 | return FALSE; | |
2831 | } | |
2832 | else | |
2833 | { | |
2834 | asection *osec; | |
2835 | ||
2836 | osec = sec->output_section; | |
2837 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
2838 | |
2839 | if (sindx == 0) | |
2840 | { | |
2841 | osec = htab->elf.text_index_section; | |
2842 | sindx = elf_section_data (osec)->dynindx; | |
2843 | } | |
2844 | BFD_ASSERT (sindx != 0); | |
90ced0dd MS |
2845 | |
2846 | /* We are turning this relocation into one | |
2847 | against a section symbol, so subtract out | |
2848 | the output section's address but not the | |
2849 | offset of the input section in the output | |
2850 | section. */ | |
90ced0dd | 2851 | outrel.r_addend -= osec->vma; |
b5727d75 MS |
2852 | } |
2853 | outrel.r_info = ELF64_R_INFO (sindx, r_type); | |
b5727d75 | 2854 | } |
0451c93c | 2855 | } |
a85d7ed0 | 2856 | |
0451c93c MS |
2857 | sreloc = elf_section_data (input_section)->sreloc; |
2858 | if (sreloc == NULL) | |
2859 | abort (); | |
2860 | ||
947216bf AM |
2861 | loc = sreloc->contents; |
2862 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
2863 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
a85d7ed0 | 2864 | |
947216bf AM |
2865 | /* If this reloc is against an external symbol, we do |
2866 | not want to fiddle with the addend. Otherwise, we | |
2867 | need to include the symbol value so that it becomes | |
2868 | an addend for the dynamic reloc. */ | |
2869 | if (! relocate) | |
2870 | continue; | |
2871 | } | |
a85d7ed0 | 2872 | |
947216bf | 2873 | break; |
a85d7ed0 | 2874 | |
69fc87f1 MS |
2875 | /* Relocations for tls literal pool entries. */ |
2876 | case R_390_TLS_IE64: | |
2877 | if (info->shared) | |
2878 | { | |
2879 | Elf_Internal_Rela outrel; | |
2880 | asection *sreloc; | |
2881 | bfd_byte *loc; | |
2882 | ||
2883 | outrel.r_offset = rel->r_offset | |
2884 | + input_section->output_section->vma | |
2885 | + input_section->output_offset; | |
2886 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); | |
2887 | sreloc = elf_section_data (input_section)->sreloc; | |
2888 | if (sreloc == NULL) | |
2889 | abort (); | |
2890 | loc = sreloc->contents; | |
2891 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
2892 | bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc); | |
2893 | } | |
ae9a127f | 2894 | /* Fall through. */ |
69fc87f1 MS |
2895 | |
2896 | case R_390_TLS_GD64: | |
2897 | case R_390_TLS_GOTIE64: | |
2898 | r_type = elf_s390_tls_transition (info, r_type, h == NULL); | |
2899 | tls_type = GOT_UNKNOWN; | |
2900 | if (h == NULL && local_got_offsets) | |
2901 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
2902 | else if (h != NULL) | |
2903 | { | |
2904 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
2905 | if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE) | |
2906 | r_type = R_390_TLS_LE64; | |
2907 | } | |
2908 | if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE) | |
2909 | r_type = R_390_TLS_IE64; | |
2910 | ||
2911 | if (r_type == R_390_TLS_LE64) | |
2912 | { | |
2913 | /* This relocation gets optimized away by the local exec | |
2914 | access optimization. */ | |
2915 | BFD_ASSERT (! unresolved_reloc); | |
2916 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
2917 | contents + rel->r_offset); | |
2918 | continue; | |
2919 | } | |
2920 | ||
f41345a7 | 2921 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2922 | abort (); |
2923 | ||
2924 | if (h != NULL) | |
2925 | off = h->got.offset; | |
2926 | else | |
2927 | { | |
2928 | if (local_got_offsets == NULL) | |
2929 | abort (); | |
2930 | ||
2931 | off = local_got_offsets[r_symndx]; | |
2932 | } | |
2933 | ||
2934 | emit_tls_relocs: | |
2935 | ||
2936 | if ((off & 1) != 0) | |
2937 | off &= ~1; | |
26e41594 | 2938 | else |
69fc87f1 MS |
2939 | { |
2940 | Elf_Internal_Rela outrel; | |
2941 | bfd_byte *loc; | |
2942 | int dr_type, indx; | |
2943 | ||
f41345a7 | 2944 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2945 | abort (); |
2946 | ||
f41345a7 AK |
2947 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2948 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2949 | |
2950 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
2951 | if (r_type == R_390_TLS_GD64) | |
2952 | dr_type = R_390_TLS_DTPMOD; | |
2953 | else | |
2954 | dr_type = R_390_TLS_TPOFF; | |
2955 | if (dr_type == R_390_TLS_TPOFF && indx == 0) | |
2956 | outrel.r_addend = relocation - dtpoff_base (info); | |
2957 | else | |
2958 | outrel.r_addend = 0; | |
2959 | outrel.r_info = ELF64_R_INFO (indx, dr_type); | |
f41345a7 AK |
2960 | loc = htab->elf.srelgot->contents; |
2961 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
2962 | * sizeof (Elf64_External_Rela); |
2963 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2964 | ||
2965 | if (r_type == R_390_TLS_GD64) | |
2966 | { | |
2967 | if (indx == 0) | |
2968 | { | |
2969 | BFD_ASSERT (! unresolved_reloc); | |
2970 | bfd_put_64 (output_bfd, | |
2971 | relocation - dtpoff_base (info), | |
f41345a7 | 2972 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2973 | } |
2974 | else | |
2975 | { | |
2976 | outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF); | |
2977 | outrel.r_offset += GOT_ENTRY_SIZE; | |
2978 | outrel.r_addend = 0; | |
f41345a7 | 2979 | htab->elf.srelgot->reloc_count++; |
69fc87f1 MS |
2980 | loc += sizeof (Elf64_External_Rela); |
2981 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2982 | } | |
2983 | } | |
2984 | ||
2985 | if (h != NULL) | |
2986 | h->got.offset |= 1; | |
2987 | else | |
2988 | local_got_offsets[r_symndx] |= 1; | |
2989 | } | |
2990 | ||
2991 | if (off >= (bfd_vma) -2) | |
2992 | abort (); | |
2993 | if (r_type == ELF64_R_TYPE (rel->r_info)) | |
2994 | { | |
f41345a7 | 2995 | relocation = htab->elf.sgot->output_offset + off; |
69fc87f1 | 2996 | if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT) |
f41345a7 | 2997 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
2998 | unresolved_reloc = FALSE; |
2999 | } | |
3000 | else | |
3001 | { | |
f41345a7 | 3002 | bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off, |
69fc87f1 MS |
3003 | contents + rel->r_offset); |
3004 | continue; | |
3005 | } | |
3006 | break; | |
3007 | ||
3008 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 3009 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
3010 | case R_390_TLS_IEENT: |
3011 | if (h == NULL) | |
3012 | { | |
3013 | if (local_got_offsets == NULL) | |
3014 | abort(); | |
3015 | off = local_got_offsets[r_symndx]; | |
3016 | if (info->shared) | |
3017 | goto emit_tls_relocs; | |
3018 | } | |
3019 | else | |
3020 | { | |
3021 | off = h->got.offset; | |
3022 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
3023 | if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE) | |
3024 | goto emit_tls_relocs; | |
3025 | } | |
3026 | ||
f41345a7 | 3027 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
3028 | abort (); |
3029 | ||
3030 | BFD_ASSERT (! unresolved_reloc); | |
3031 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
f41345a7 AK |
3032 | htab->elf.sgot->contents + off); |
3033 | relocation = htab->elf.sgot->output_offset + off; | |
69fc87f1 | 3034 | if (r_type == R_390_TLS_IEENT) |
f41345a7 | 3035 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
3036 | unresolved_reloc = FALSE; |
3037 | break; | |
3038 | ||
3039 | case R_390_TLS_LDM64: | |
3040 | if (! info->shared) | |
3041 | /* The literal pool entry this relocation refers to gets ignored | |
3042 | by the optimized code of the local exec model. Do nothing | |
3043 | and the value will turn out zero. */ | |
3044 | continue; | |
3045 | ||
f41345a7 | 3046 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
3047 | abort (); |
3048 | ||
3049 | off = htab->tls_ldm_got.offset; | |
3050 | if (off & 1) | |
3051 | off &= ~1; | |
3052 | else | |
3053 | { | |
3054 | Elf_Internal_Rela outrel; | |
3055 | bfd_byte *loc; | |
3056 | ||
f41345a7 | 3057 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
3058 | abort (); |
3059 | ||
f41345a7 AK |
3060 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3061 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
3062 | |
3063 | bfd_put_64 (output_bfd, 0, | |
f41345a7 | 3064 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
3065 | outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD); |
3066 | outrel.r_addend = 0; | |
f41345a7 AK |
3067 | loc = htab->elf.srelgot->contents; |
3068 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
3069 | * sizeof (Elf64_External_Rela); |
3070 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
3071 | htab->tls_ldm_got.offset |= 1; | |
3072 | } | |
f41345a7 | 3073 | relocation = htab->elf.sgot->output_offset + off; |
26e41594 | 3074 | unresolved_reloc = FALSE; |
69fc87f1 MS |
3075 | break; |
3076 | ||
3077 | case R_390_TLS_LE64: | |
3078 | if (info->shared) | |
3079 | { | |
3080 | /* Linking a shared library with non-fpic code requires | |
3081 | a R_390_TLS_TPOFF relocation. */ | |
3082 | Elf_Internal_Rela outrel; | |
3083 | asection *sreloc; | |
3084 | bfd_byte *loc; | |
3085 | int indx; | |
3086 | ||
3087 | outrel.r_offset = rel->r_offset | |
3088 | + input_section->output_section->vma | |
3089 | + input_section->output_offset; | |
3090 | if (h != NULL && h->dynindx != -1) | |
3091 | indx = h->dynindx; | |
3092 | else | |
3093 | indx = 0; | |
3094 | outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF); | |
3095 | if (indx == 0) | |
3096 | outrel.r_addend = relocation - dtpoff_base (info); | |
3097 | else | |
3098 | outrel.r_addend = 0; | |
3099 | sreloc = elf_section_data (input_section)->sreloc; | |
3100 | if (sreloc == NULL) | |
3101 | abort (); | |
3102 | loc = sreloc->contents; | |
3103 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
3104 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
3105 | } | |
3106 | else | |
3107 | { | |
3108 | BFD_ASSERT (! unresolved_reloc); | |
3109 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
3110 | contents + rel->r_offset); | |
3111 | } | |
3112 | continue; | |
3113 | ||
3114 | case R_390_TLS_LDO64: | |
de8bee76 | 3115 | if (info->shared || (input_section->flags & SEC_DEBUGGING)) |
69fc87f1 MS |
3116 | relocation -= dtpoff_base (info); |
3117 | else | |
3118 | /* When converting LDO to LE, we must negate. */ | |
3119 | relocation = -tpoff (info, relocation); | |
3120 | break; | |
3121 | ||
3122 | /* Relocations for tls instructions. */ | |
3123 | case R_390_TLS_LOAD: | |
3124 | case R_390_TLS_GDCALL: | |
3125 | case R_390_TLS_LDCALL: | |
3126 | tls_type = GOT_UNKNOWN; | |
3127 | if (h == NULL && local_got_offsets) | |
3128 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
3129 | else if (h != NULL) | |
3130 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
3131 | ||
3132 | if (tls_type == GOT_TLS_GD) | |
3133 | continue; | |
3134 | ||
3135 | if (r_type == R_390_TLS_LOAD) | |
3136 | { | |
3137 | if (!info->shared && (h == NULL || h->dynindx == -1)) | |
3138 | { | |
3139 | /* IE->LE transition. Four valid cases: | |
3140 | lg %rx,(0,%ry) -> sllg %rx,%ry,0 | |
3141 | lg %rx,(%ry,0) -> sllg %rx,%ry,0 | |
3142 | lg %rx,(%ry,%r12) -> sllg %rx,%ry,0 | |
3143 | lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */ | |
3144 | unsigned int insn0, insn1, ry; | |
3145 | ||
3146 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3147 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
3148 | if (insn1 != 0x0004) | |
3149 | invalid_tls_insn (input_bfd, input_section, rel); | |
3150 | ry = 0; | |
3151 | if ((insn0 & 0xff00f000) == 0xe3000000) | |
3152 | /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */ | |
3153 | ry = (insn0 & 0x000f0000); | |
3154 | else if ((insn0 & 0xff0f0000) == 0xe3000000) | |
3155 | /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */ | |
3156 | ry = (insn0 & 0x0000f000) << 4; | |
3157 | else if ((insn0 & 0xff00f000) == 0xe300c000) | |
3158 | /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */ | |
3159 | ry = (insn0 & 0x000f0000); | |
3160 | else if ((insn0 & 0xff0f0000) == 0xe30c0000) | |
3161 | /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */ | |
3162 | ry = (insn0 & 0x0000f000) << 4; | |
3163 | else | |
3164 | invalid_tls_insn (input_bfd, input_section, rel); | |
3165 | insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry; | |
3166 | insn1 = 0x000d; | |
3167 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
3168 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
3169 | } | |
3170 | } | |
3171 | else if (r_type == R_390_TLS_GDCALL) | |
3172 | { | |
3173 | unsigned int insn0, insn1; | |
3174 | ||
3175 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3176 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
3177 | if ((insn0 & 0xffff0000) != 0xc0e50000) | |
3178 | invalid_tls_insn (input_bfd, input_section, rel); | |
3179 | if (!info->shared && (h == NULL || h->dynindx == -1)) | |
3180 | { | |
3181 | /* GD->LE transition. | |
3182 | brasl %r14,__tls_get_addr@plt -> brcl 0,. */ | |
3183 | insn0 = 0xc0040000; | |
3184 | insn1 = 0x0000; | |
3185 | } | |
3186 | else | |
3187 | { | |
3188 | /* GD->IE transition. | |
3189 | brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */ | |
3190 | insn0 = 0xe322c000; | |
3191 | insn1 = 0x0004; | |
3192 | } | |
3193 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
3194 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
3195 | } | |
3196 | else if (r_type == R_390_TLS_LDCALL) | |
3197 | { | |
3198 | if (!info->shared) | |
3199 | { | |
3200 | unsigned int insn0, insn1; | |
3201 | ||
3202 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3203 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
3204 | if ((insn0 & 0xffff0000) != 0xc0e50000) | |
3205 | invalid_tls_insn (input_bfd, input_section, rel); | |
3206 | /* LD->LE transition. | |
3207 | brasl %r14,__tls_get_addr@plt -> brcl 0,. */ | |
3208 | insn0 = 0xc0040000; | |
3209 | insn1 = 0x0000; | |
3210 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
3211 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
3212 | } | |
3213 | } | |
3214 | continue; | |
3215 | ||
947216bf AM |
3216 | default: |
3217 | break; | |
3218 | } | |
a85d7ed0 | 3219 | |
239e1f3a AM |
3220 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3221 | because such sections are not SEC_ALLOC and thus ld.so will | |
3222 | not process them. */ | |
0451c93c | 3223 | if (unresolved_reloc |
239e1f3a | 3224 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
3225 | && h->def_dynamic) |
3226 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
3227 | rel->r_offset) != (bfd_vma) -1) | |
0451c93c | 3228 | (*_bfd_error_handler) |
843fe662 | 3229 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
3230 | input_bfd, |
3231 | input_section, | |
0451c93c | 3232 | (long) rel->r_offset, |
843fe662 | 3233 | howto->name, |
0451c93c MS |
3234 | h->root.root.string); |
3235 | ||
470b557a AK |
3236 | do_relocation: |
3237 | ||
fb798c50 AK |
3238 | /* When applying a 24 bit reloc we need to start one byte |
3239 | earlier. Otherwise the 32 bit get/put bfd operations might | |
3240 | access a byte after the actual section. */ | |
3241 | if (r_type == R_390_PC24DBL | |
3242 | || r_type == R_390_PLT24DBL) | |
3243 | rel->r_offset--; | |
3244 | ||
bd1ea41b MS |
3245 | if (r_type == R_390_20 |
3246 | || r_type == R_390_GOT20 | |
3247 | || r_type == R_390_GOTPLT20 | |
3248 | || r_type == R_390_TLS_GOTIE20) | |
3249 | { | |
3250 | relocation += rel->r_addend; | |
3251 | relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12; | |
3252 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3253 | contents, rel->r_offset, | |
3254 | relocation, 0); | |
3255 | } | |
3256 | else | |
3257 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
a85d7ed0 NC |
3258 | contents, rel->r_offset, |
3259 | relocation, rel->r_addend); | |
3260 | ||
3261 | if (r != bfd_reloc_ok) | |
3262 | { | |
0451c93c | 3263 | const char *name; |
ec338859 | 3264 | |
0451c93c MS |
3265 | if (h != NULL) |
3266 | name = h->root.root.string; | |
3267 | else | |
a85d7ed0 | 3268 | { |
0451c93c MS |
3269 | name = bfd_elf_string_from_elf_section (input_bfd, |
3270 | symtab_hdr->sh_link, | |
3271 | sym->st_name); | |
3272 | if (name == NULL) | |
b34976b6 | 3273 | return FALSE; |
0451c93c MS |
3274 | if (*name == '\0') |
3275 | name = bfd_section_name (input_bfd, sec); | |
3276 | } | |
ec338859 | 3277 | |
0451c93c MS |
3278 | if (r == bfd_reloc_overflow) |
3279 | { | |
ec338859 | 3280 | |
0451c93c | 3281 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f L |
3282 | (info, (h ? &h->root : NULL), name, howto->name, |
3283 | (bfd_vma) 0, input_bfd, input_section, | |
3284 | rel->r_offset))) | |
b34976b6 | 3285 | return FALSE; |
0451c93c MS |
3286 | } |
3287 | else | |
3288 | { | |
3289 | (*_bfd_error_handler) | |
d003868e AM |
3290 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
3291 | input_bfd, input_section, | |
0451c93c | 3292 | (long) rel->r_offset, name, (int) r); |
b34976b6 | 3293 | return FALSE; |
a85d7ed0 NC |
3294 | } |
3295 | } | |
3296 | } | |
3297 | ||
b34976b6 | 3298 | return TRUE; |
a85d7ed0 NC |
3299 | } |
3300 | ||
470b557a AK |
3301 | /* Generate the PLT slots together with the dynamic relocations needed |
3302 | for IFUNC symbols. */ | |
3303 | ||
3304 | static void | |
3305 | elf_s390_finish_ifunc_symbol (bfd *output_bfd, | |
3306 | struct bfd_link_info *info, | |
3307 | struct elf_link_hash_entry *h, | |
3308 | struct elf_s390_link_hash_table *htab, | |
3309 | bfd_vma plt_offset, | |
3310 | bfd_vma resolver_address) | |
3311 | { | |
3312 | bfd_vma plt_index; | |
3313 | bfd_vma got_offset; | |
3314 | Elf_Internal_Rela rela; | |
3315 | bfd_byte *loc; | |
3316 | asection *plt, *gotplt, *relplt; | |
3317 | ||
3318 | if (htab->elf.iplt == NULL | |
3319 | || htab->elf.igotplt == NULL | |
3320 | || htab->elf.irelplt == NULL) | |
3321 | abort (); | |
3322 | ||
3323 | /* Index of the PLT slot within iplt section. */ | |
3324 | plt_index = plt_offset / PLT_ENTRY_SIZE; | |
3325 | plt = htab->elf.iplt; | |
3326 | /* Offset into the igot.plt section. */ | |
3327 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
3328 | gotplt = htab->elf.igotplt; | |
3329 | relplt = htab->elf.irelplt; | |
3330 | ||
3331 | /* Fill in the blueprint of a PLT. */ | |
3332 | memcpy (plt->contents + plt_offset, elf_s390x_plt_entry, | |
3333 | PLT_ENTRY_SIZE); | |
3334 | ||
3335 | /* Fixup the relative address to the GOT entry */ | |
3336 | bfd_put_32 (output_bfd, | |
3337 | (gotplt->output_section->vma + | |
3338 | gotplt->output_offset + got_offset | |
3339 | - (plt->output_section->vma + | |
3340 | plt->output_offset + | |
3341 | plt_offset))/2, | |
3342 | plt->contents + plt_offset + 2); | |
3343 | /* Fixup the relative branch to PLT 0 */ | |
3344 | bfd_put_32 (output_bfd, - (plt->output_offset + | |
3345 | (PLT_ENTRY_SIZE * plt_index) + 22)/2, | |
3346 | plt->contents + plt_offset + 24); | |
3347 | /* Fixup offset into .rela.plt section. */ | |
3348 | bfd_put_32 (output_bfd, relplt->output_offset + | |
3349 | plt_index * sizeof (Elf64_External_Rela), | |
3350 | plt->contents + plt_offset + 28); | |
3351 | ||
3352 | /* Fill in the entry in the global offset table. | |
3353 | Points to instruction after GOT offset. */ | |
3354 | bfd_put_64 (output_bfd, | |
3355 | (plt->output_section->vma | |
3356 | + plt->output_offset | |
3357 | + plt_offset | |
3358 | + 14), | |
3359 | gotplt->contents + got_offset); | |
3360 | ||
3361 | /* Fill in the entry in the .rela.plt section. */ | |
3362 | rela.r_offset = (gotplt->output_section->vma | |
3363 | + gotplt->output_offset | |
3364 | + got_offset); | |
3365 | ||
3366 | if (!h | |
3367 | || h->dynindx == -1 | |
3368 | || ((info->executable | |
3369 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
3370 | && h->def_regular)) | |
3371 | { | |
3372 | /* The symbol can be locally resolved. */ | |
3373 | rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE); | |
3374 | rela.r_addend = resolver_address; | |
3375 | } | |
3376 | else | |
3377 | { | |
3378 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3379 | rela.r_addend = 0; | |
3380 | } | |
3381 | ||
3382 | loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela); | |
3383 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
3384 | } | |
3385 | ||
3386 | ||
a85d7ed0 NC |
3387 | /* Finish up dynamic symbol handling. We set the contents of various |
3388 | dynamic sections here. */ | |
3389 | ||
b34976b6 | 3390 | static bfd_boolean |
4dfe6ac6 NC |
3391 | elf_s390_finish_dynamic_symbol (bfd *output_bfd, |
3392 | struct bfd_link_info *info, | |
3393 | struct elf_link_hash_entry *h, | |
3394 | Elf_Internal_Sym *sym) | |
a85d7ed0 | 3395 | { |
0451c93c | 3396 | struct elf_s390_link_hash_table *htab; |
470b557a | 3397 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h; |
a85d7ed0 | 3398 | |
0451c93c | 3399 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
3400 | if (htab == NULL) |
3401 | return FALSE; | |
a85d7ed0 NC |
3402 | |
3403 | if (h->plt.offset != (bfd_vma) -1) | |
3404 | { | |
a85d7ed0 | 3405 | bfd_vma plt_index; |
0451c93c MS |
3406 | bfd_vma got_offset; |
3407 | Elf_Internal_Rela rela; | |
947216bf | 3408 | bfd_byte *loc; |
a85d7ed0 NC |
3409 | |
3410 | /* This symbol has an entry in the procedure linkage table. Set | |
947216bf | 3411 | it up. */ |
470b557a AK |
3412 | if (s390_is_ifunc_symbol_p (h)) |
3413 | { | |
3414 | /* If we can resolve the IFUNC symbol locally we generate an | |
3415 | IRELATIVE reloc. */ | |
3416 | elf_s390_finish_ifunc_symbol (output_bfd, info, h, htab, h->plt.offset, | |
3417 | eh->ifunc_resolver_address + | |
3418 | eh->ifunc_resolver_section->output_offset + | |
3419 | eh->ifunc_resolver_section->output_section->vma); | |
3420 | ; | |
3421 | /* Fallthrough. Handling of explicit GOT slots of IFUNC | |
3422 | symbols is below. */ | |
3423 | } | |
3424 | else | |
3425 | { | |
3426 | if (h->dynindx == -1 | |
3427 | || htab->elf.splt == NULL | |
3428 | || htab->elf.sgotplt == NULL | |
3429 | || htab->elf.srelplt == NULL) | |
3430 | abort (); | |
a85d7ed0 | 3431 | |
470b557a AK |
3432 | /* Calc. index no. |
3433 | Current offset - size first entry / entry size. */ | |
3434 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
a85d7ed0 | 3435 | |
470b557a AK |
3436 | /* Offset in GOT is PLT index plus GOT headers(3) times 8, |
3437 | addr & GOT addr. */ | |
3438 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
a85d7ed0 | 3439 | |
470b557a AK |
3440 | /* Fill in the blueprint of a PLT. */ |
3441 | memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry, | |
3442 | PLT_ENTRY_SIZE); | |
3443 | ||
3444 | /* Fixup the relative address to the GOT entry */ | |
3445 | bfd_put_32 (output_bfd, | |
3446 | (htab->elf.sgotplt->output_section->vma + | |
3447 | htab->elf.sgotplt->output_offset + got_offset | |
3448 | - (htab->elf.splt->output_section->vma + | |
3449 | htab->elf.splt->output_offset + | |
3450 | h->plt.offset))/2, | |
3451 | htab->elf.splt->contents + h->plt.offset + 2); | |
3452 | /* Fixup the relative branch to PLT 0 */ | |
3453 | bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE + | |
3454 | (PLT_ENTRY_SIZE * plt_index) + 22)/2, | |
3455 | htab->elf.splt->contents + h->plt.offset + 24); | |
3456 | /* Fixup offset into .rela.plt section. */ | |
3457 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela), | |
3458 | htab->elf.splt->contents + h->plt.offset + 28); | |
3459 | ||
3460 | /* Fill in the entry in the global offset table. | |
3461 | Points to instruction after GOT offset. */ | |
3462 | bfd_put_64 (output_bfd, | |
3463 | (htab->elf.splt->output_section->vma | |
3464 | + htab->elf.splt->output_offset | |
3465 | + h->plt.offset | |
3466 | + 14), | |
3467 | htab->elf.sgotplt->contents + got_offset); | |
3468 | ||
3469 | /* Fill in the entry in the .rela.plt section. */ | |
3470 | rela.r_offset = (htab->elf.sgotplt->output_section->vma | |
3471 | + htab->elf.sgotplt->output_offset | |
3472 | + got_offset); | |
3473 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3474 | rela.r_addend = 0; | |
3475 | loc = htab->elf.srelplt->contents + plt_index * | |
3476 | sizeof (Elf64_External_Rela); | |
3477 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
3478 | ||
3479 | if (!h->def_regular) | |
3480 | { | |
3481 | /* Mark the symbol as undefined, rather than as defined in | |
3482 | the .plt section. Leave the value alone. This is a clue | |
3483 | for the dynamic linker, to make function pointer | |
3484 | comparisons work between an application and shared | |
3485 | library. */ | |
3486 | sym->st_shndx = SHN_UNDEF; | |
3487 | } | |
a85d7ed0 NC |
3488 | } |
3489 | } | |
3490 | ||
69fc87f1 MS |
3491 | if (h->got.offset != (bfd_vma) -1 |
3492 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD | |
3493 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE | |
3494 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT) | |
a85d7ed0 | 3495 | { |
a85d7ed0 | 3496 | Elf_Internal_Rela rela; |
947216bf | 3497 | bfd_byte *loc; |
a85d7ed0 NC |
3498 | |
3499 | /* This symbol has an entry in the global offset table. Set it | |
947216bf | 3500 | up. */ |
f41345a7 | 3501 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
0451c93c | 3502 | abort (); |
a85d7ed0 | 3503 | |
f41345a7 AK |
3504 | rela.r_offset = (htab->elf.sgot->output_section->vma |
3505 | + htab->elf.sgot->output_offset | |
dc810e39 | 3506 | + (h->got.offset &~ (bfd_vma) 1)); |
a85d7ed0 | 3507 | |
470b557a AK |
3508 | if (h->def_regular && s390_is_ifunc_symbol_p (h)) |
3509 | { | |
3510 | if (info->shared) | |
3511 | { | |
3512 | /* An explicit GOT slot usage needs GLOB_DAT. If the | |
3513 | symbol references local the implicit got.iplt slot | |
3514 | will be used and the IRELATIVE reloc has been created | |
3515 | above. */ | |
3516 | goto do_glob_dat; | |
3517 | } | |
3518 | else | |
3519 | { | |
3520 | /* For non-shared objects explicit GOT slots must be | |
3521 | filled with the PLT slot address for pointer | |
3522 | equality reasons. */ | |
3523 | bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma | |
3524 | + htab->elf.iplt->output_offset | |
3525 | + h->plt.offset), | |
3526 | htab->elf.sgot->contents + h->got.offset); | |
3527 | return TRUE; | |
3528 | } | |
3529 | } | |
3530 | else if (info->shared | |
8c21ca21 | 3531 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
947216bf | 3532 | { |
470b557a AK |
3533 | /* If this is a static link, or it is a -Bsymbolic link and |
3534 | the symbol is defined locally or was forced to be local | |
3535 | because of a version file, we just want to emit a | |
3536 | RELATIVE reloc. The entry in the global offset table | |
3537 | will already have been initialized in the | |
3538 | relocate_section function. */ | |
8c21ca21 AK |
3539 | if (!h->def_regular) |
3540 | return FALSE; | |
0451c93c | 3541 | BFD_ASSERT((h->got.offset & 1) != 0); |
947216bf AM |
3542 | rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE); |
3543 | rela.r_addend = (h->root.u.def.value | |
3544 | + h->root.u.def.section->output_section->vma | |
3545 | + h->root.u.def.section->output_offset); | |
3546 | } | |
a85d7ed0 NC |
3547 | else |
3548 | { | |
3549 | BFD_ASSERT((h->got.offset & 1) == 0); | |
470b557a | 3550 | do_glob_dat: |
f41345a7 | 3551 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset); |
a85d7ed0 | 3552 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT); |
947216bf AM |
3553 | rela.r_addend = 0; |
3554 | } | |
a85d7ed0 | 3555 | |
f41345a7 AK |
3556 | loc = htab->elf.srelgot->contents; |
3557 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela); | |
0451c93c | 3558 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3559 | } |
3560 | ||
f5385ebf | 3561 | if (h->needs_copy) |
a85d7ed0 | 3562 | { |
a85d7ed0 | 3563 | Elf_Internal_Rela rela; |
947216bf | 3564 | bfd_byte *loc; |
a85d7ed0 NC |
3565 | |
3566 | /* This symbols needs a copy reloc. Set it up. */ | |
3567 | ||
0451c93c MS |
3568 | if (h->dynindx == -1 |
3569 | || (h->root.type != bfd_link_hash_defined | |
3570 | && h->root.type != bfd_link_hash_defweak) | |
3571 | || htab->srelbss == NULL) | |
3572 | abort (); | |
a85d7ed0 NC |
3573 | |
3574 | rela.r_offset = (h->root.u.def.value | |
3575 | + h->root.u.def.section->output_section->vma | |
3576 | + h->root.u.def.section->output_offset); | |
3577 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY); | |
3578 | rela.r_addend = 0; | |
947216bf AM |
3579 | loc = htab->srelbss->contents; |
3580 | loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
0451c93c | 3581 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3582 | } |
3583 | ||
3584 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 3585 | if (h == htab->elf.hdynamic |
22edb2f1 RS |
3586 | || h == htab->elf.hgot |
3587 | || h == htab->elf.hplt) | |
a85d7ed0 NC |
3588 | sym->st_shndx = SHN_ABS; |
3589 | ||
b34976b6 | 3590 | return TRUE; |
a85d7ed0 NC |
3591 | } |
3592 | ||
0451c93c MS |
3593 | /* Used to decide how to sort relocs in an optimal manner for the |
3594 | dynamic linker, before writing them out. */ | |
3595 | ||
3596 | static enum elf_reloc_type_class | |
7e612e98 AM |
3597 | elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
3598 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
3599 | const Elf_Internal_Rela *rela) | |
0451c93c MS |
3600 | { |
3601 | switch ((int) ELF64_R_TYPE (rela->r_info)) | |
3602 | { | |
3603 | case R_390_RELATIVE: | |
3604 | return reloc_class_relative; | |
3605 | case R_390_JMP_SLOT: | |
3606 | return reloc_class_plt; | |
3607 | case R_390_COPY: | |
3608 | return reloc_class_copy; | |
3609 | default: | |
3610 | return reloc_class_normal; | |
3611 | } | |
3612 | } | |
3613 | ||
a85d7ed0 NC |
3614 | /* Finish up the dynamic sections. */ |
3615 | ||
b34976b6 | 3616 | static bfd_boolean |
4dfe6ac6 NC |
3617 | elf_s390_finish_dynamic_sections (bfd *output_bfd, |
3618 | struct bfd_link_info *info) | |
a85d7ed0 | 3619 | { |
0451c93c | 3620 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
3621 | bfd *dynobj; |
3622 | asection *sdyn; | |
470b557a AK |
3623 | bfd *ibfd; |
3624 | unsigned int i; | |
a85d7ed0 | 3625 | |
0451c93c | 3626 | htab = elf_s390_hash_table (info); |
4dfe6ac6 NC |
3627 | if (htab == NULL) |
3628 | return FALSE; | |
3629 | ||
0451c93c | 3630 | dynobj = htab->elf.dynobj; |
3d4d4302 | 3631 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
a85d7ed0 | 3632 | |
0451c93c | 3633 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 | 3634 | { |
a85d7ed0 NC |
3635 | Elf64_External_Dyn *dyncon, *dynconend; |
3636 | ||
f41345a7 | 3637 | if (sdyn == NULL || htab->elf.sgot == NULL) |
0451c93c | 3638 | abort (); |
a85d7ed0 NC |
3639 | |
3640 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 3641 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
a85d7ed0 NC |
3642 | for (; dyncon < dynconend; dyncon++) |
3643 | { | |
3644 | Elf_Internal_Dyn dyn; | |
a85d7ed0 | 3645 | asection *s; |
ec338859 | 3646 | |
a85d7ed0 | 3647 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); |
ec338859 | 3648 | |
a85d7ed0 NC |
3649 | switch (dyn.d_tag) |
3650 | { | |
3651 | default: | |
0451c93c | 3652 | continue; |
ec338859 | 3653 | |
a85d7ed0 | 3654 | case DT_PLTGOT: |
f41345a7 | 3655 | dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma; |
0451c93c | 3656 | break; |
ec338859 | 3657 | |
a85d7ed0 | 3658 | case DT_JMPREL: |
f41345a7 | 3659 | dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma; |
a85d7ed0 | 3660 | break; |
ec338859 | 3661 | |
a85d7ed0 | 3662 | case DT_PLTRELSZ: |
f41345a7 | 3663 | s = htab->elf.srelplt->output_section; |
eea6121a | 3664 | dyn.d_un.d_val = s->size; |
a85d7ed0 | 3665 | break; |
ec338859 | 3666 | |
a85d7ed0 NC |
3667 | case DT_RELASZ: |
3668 | /* The procedure linkage table relocs (DT_JMPREL) should | |
3669 | not be included in the overall relocs (DT_RELA). | |
3670 | Therefore, we override the DT_RELASZ entry here to | |
3671 | make it not include the JMPREL relocs. Since the | |
3672 | linker script arranges for .rela.plt to follow all | |
3673 | other relocation sections, we don't have to worry | |
3674 | about changing the DT_RELA entry. */ | |
f41345a7 | 3675 | s = htab->elf.srelplt->output_section; |
eea6121a | 3676 | dyn.d_un.d_val -= s->size; |
a85d7ed0 NC |
3677 | break; |
3678 | } | |
0451c93c MS |
3679 | |
3680 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
a85d7ed0 NC |
3681 | } |
3682 | ||
3683 | /* Fill in the special first entry in the procedure linkage table. */ | |
f41345a7 | 3684 | if (htab->elf.splt && htab->elf.splt->size > 0) |
a85d7ed0 NC |
3685 | { |
3686 | /* fill in blueprint for plt 0 entry */ | |
f41345a7 | 3687 | memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry, |
9aa17453 | 3688 | PLT_FIRST_ENTRY_SIZE); |
a85d7ed0 NC |
3689 | /* Fixup relative address to start of GOT */ |
3690 | bfd_put_32 (output_bfd, | |
f41345a7 AK |
3691 | (htab->elf.sgotplt->output_section->vma + |
3692 | htab->elf.sgotplt->output_offset | |
3693 | - htab->elf.splt->output_section->vma - 6)/2, | |
3694 | htab->elf.splt->contents + 8); | |
a85d7ed0 | 3695 | } |
387f8054 MR |
3696 | if (elf_section_data (htab->elf.splt->output_section) != NULL) |
3697 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize | |
3698 | = PLT_ENTRY_SIZE; | |
a85d7ed0 NC |
3699 | } |
3700 | ||
f41345a7 | 3701 | if (htab->elf.sgotplt) |
a85d7ed0 | 3702 | { |
0451c93c | 3703 | /* Fill in the first three entries in the global offset table. */ |
f41345a7 | 3704 | if (htab->elf.sgotplt->size > 0) |
0451c93c MS |
3705 | { |
3706 | bfd_put_64 (output_bfd, | |
3707 | (sdyn == NULL ? (bfd_vma) 0 | |
3708 | : sdyn->output_section->vma + sdyn->output_offset), | |
f41345a7 | 3709 | htab->elf.sgotplt->contents); |
0451c93c | 3710 | /* One entry for shared object struct ptr. */ |
f41345a7 | 3711 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8); |
0451c93c | 3712 | /* One entry for _dl_runtime_resolve. */ |
f41345a7 | 3713 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 12); |
0451c93c | 3714 | } |
a85d7ed0 | 3715 | |
f41345a7 | 3716 | elf_section_data (htab->elf.sgot->output_section) |
0451c93c MS |
3717 | ->this_hdr.sh_entsize = 8; |
3718 | } | |
470b557a AK |
3719 | |
3720 | /* Finish dynamic symbol for local IFUNC symbols. */ | |
3721 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
3722 | { | |
3723 | struct plt_entry *local_plt; | |
3724 | Elf_Internal_Sym *isym; | |
3725 | Elf_Internal_Shdr *symtab_hdr; | |
3726 | ||
3727 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
3728 | ||
3729 | local_plt = elf_s390_local_plt (ibfd); | |
3730 | if (local_plt != NULL) | |
3731 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
3732 | { | |
3733 | if (local_plt[i].plt.offset != (bfd_vma) -1) | |
3734 | { | |
3735 | asection *sec = local_plt[i].sec; | |
3736 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i); | |
3737 | if (isym == NULL) | |
3738 | return FALSE; | |
3739 | ||
3740 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
3741 | elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab, | |
3742 | local_plt[i].plt.offset, | |
3743 | isym->st_value | |
3744 | + sec->output_section->vma | |
3745 | + sec->output_offset); | |
3746 | ||
3747 | } | |
3748 | } | |
3749 | } | |
3750 | ||
b34976b6 | 3751 | return TRUE; |
a85d7ed0 NC |
3752 | } |
3753 | ||
4c45e5c9 JJ |
3754 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
3755 | or (bfd_vma) -1 if it should not be included. */ | |
3756 | ||
3757 | static bfd_vma | |
3758 | elf_s390_plt_sym_val (bfd_vma i, const asection *plt, | |
3759 | const arelent *rel ATTRIBUTE_UNUSED) | |
3760 | { | |
3761 | return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE; | |
3762 | } | |
3763 | ||
ae9a127f NC |
3764 | /* Why was the hash table entry size definition changed from |
3765 | ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and | |
3766 | this is the only reason for the s390_elf64_size_info structure. */ | |
a85d7ed0 NC |
3767 | |
3768 | const struct elf_size_info s390_elf64_size_info = | |
3769 | { | |
3770 | sizeof (Elf64_External_Ehdr), | |
3771 | sizeof (Elf64_External_Phdr), | |
3772 | sizeof (Elf64_External_Shdr), | |
3773 | sizeof (Elf64_External_Rel), | |
3774 | sizeof (Elf64_External_Rela), | |
3775 | sizeof (Elf64_External_Sym), | |
3776 | sizeof (Elf64_External_Dyn), | |
3777 | sizeof (Elf_External_Note), | |
ae9a127f NC |
3778 | 8, /* hash-table entry size. */ |
3779 | 1, /* internal relocations per external relocations. */ | |
3780 | 64, /* arch_size. */ | |
45d6a902 | 3781 | 3, /* log_file_align. */ |
a85d7ed0 NC |
3782 | ELFCLASS64, EV_CURRENT, |
3783 | bfd_elf64_write_out_phdrs, | |
3784 | bfd_elf64_write_shdrs_and_ehdr, | |
1489a3a0 | 3785 | bfd_elf64_checksum_contents, |
a85d7ed0 | 3786 | bfd_elf64_write_relocs, |
73ff0d56 | 3787 | bfd_elf64_swap_symbol_in, |
a85d7ed0 NC |
3788 | bfd_elf64_swap_symbol_out, |
3789 | bfd_elf64_slurp_reloc_table, | |
3790 | bfd_elf64_slurp_symbol_table, | |
3791 | bfd_elf64_swap_dyn_in, | |
3792 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
3793 | bfd_elf64_swap_reloc_in, |
3794 | bfd_elf64_swap_reloc_out, | |
3795 | bfd_elf64_swap_reloca_in, | |
3796 | bfd_elf64_swap_reloca_out | |
a85d7ed0 NC |
3797 | }; |
3798 | ||
3799 | #define TARGET_BIG_SYM bfd_elf64_s390_vec | |
3800 | #define TARGET_BIG_NAME "elf64-s390" | |
3801 | #define ELF_ARCH bfd_arch_s390 | |
ae95ffa6 | 3802 | #define ELF_TARGET_ID S390_ELF_DATA |
a85d7ed0 NC |
3803 | #define ELF_MACHINE_CODE EM_S390 |
3804 | #define ELF_MACHINE_ALT1 EM_S390_OLD | |
3805 | #define ELF_MAXPAGESIZE 0x1000 | |
3806 | ||
3807 | #define elf_backend_size_info s390_elf64_size_info | |
3808 | ||
3809 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 3810 | #define elf_backend_can_refcount 1 |
a85d7ed0 NC |
3811 | #define elf_backend_want_got_plt 1 |
3812 | #define elf_backend_plt_readonly 1 | |
3813 | #define elf_backend_want_plt_sym 0 | |
3814 | #define elf_backend_got_header_size 24 | |
b491616a | 3815 | #define elf_backend_rela_normal 1 |
a85d7ed0 NC |
3816 | |
3817 | #define elf_info_to_howto elf_s390_info_to_howto | |
3818 | ||
a85d7ed0 NC |
3819 | #define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name |
3820 | #define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create | |
3821 | #define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup | |
157090f7 | 3822 | #define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup |
a85d7ed0 NC |
3823 | |
3824 | #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol | |
3825 | #define elf_backend_check_relocs elf_s390_check_relocs | |
0451c93c MS |
3826 | #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol |
3827 | #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections | |
a85d7ed0 NC |
3828 | #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections |
3829 | #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol | |
3830 | #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook | |
3831 | #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook | |
0451c93c | 3832 | #define elf_backend_reloc_type_class elf_s390_reloc_type_class |
a85d7ed0 NC |
3833 | #define elf_backend_relocate_section elf_s390_relocate_section |
3834 | #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections | |
74541ad4 | 3835 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
4c45e5c9 | 3836 | #define elf_backend_plt_sym_val elf_s390_plt_sym_val |
470b557a | 3837 | #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook |
a85d7ed0 | 3838 | |
69fc87f1 MS |
3839 | #define bfd_elf64_mkobject elf_s390_mkobject |
3840 | #define elf_backend_object_p elf_s390_object_p | |
a85d7ed0 | 3841 | |
2c3fc389 NC |
3842 | /* Enable ELF64 archive functions. */ |
3843 | #define bfd_elf64_archive_functions | |
3844 | extern bfd_boolean bfd_elf64_archive_slurp_armap (bfd *); | |
3845 | extern bfd_boolean bfd_elf64_archive_write_armap (bfd *, unsigned int, struct orl *, unsigned int, int); | |
3846 | ||
3847 | #define bfd_elf64_archive_slurp_extended_name_table _bfd_archive_coff_slurp_extended_name_table | |
3848 | #define bfd_elf64_archive_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table | |
3849 | #define bfd_elf64_archive_truncate_arname _bfd_archive_coff_truncate_arname | |
3850 | #define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr | |
3851 | #define bfd_elf64_archive_write_ar_hdr _bfd_archive_coff_write_ar_hdr | |
3852 | #define bfd_elf64_archive_openr_next_archived_file _bfd_archive_coff_openr_next_archived_file | |
3853 | #define bfd_elf64_archive_get_elt_at_index _bfd_archive_coff_get_elt_at_index | |
3854 | #define bfd_elf64_archive_generic_stat_arch_elt _bfd_archive_coff_generic_stat_arch_elt | |
3855 | #define bfd_elf64_archive_update_armap_timestamp _bfd_archive_coff_update_armap_timestamp | |
3856 | ||
a85d7ed0 | 3857 | #include "elf64-target.h" |