Commit | Line | Data |
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a85d7ed0 | 1 | /* IBM S/390-specific support for 32-bit ELF |
6f2750fe | 2 | Copyright (C) 2000-2016 Free Software Foundation, Inc. |
a85d7ed0 NC |
3 | Contributed by Carl B. Pedersen and Martin Schwidefsky. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
a85d7ed0 NC |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
3e110533 | 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
53e09e0a | 20 | 02110-1301, USA. */ |
a85d7ed0 | 21 | |
a85d7ed0 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
a85d7ed0 NC |
24 | #include "bfdlink.h" |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
a85d7ed0 | 27 | #include "elf/s390.h" |
e3e9290d | 28 | #include <stdarg.h> |
a85d7ed0 | 29 | |
2c3fc389 NC |
30 | static bfd_reloc_status_type |
31 | s390_tls_reloc (bfd *, arelent *, asymbol *, void *, | |
32 | asection *, bfd *, char **); | |
33 | static bfd_reloc_status_type | |
34 | s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *, | |
35 | asection *, bfd *, char **); | |
36 | ||
a85d7ed0 NC |
37 | /* The relocation "howto" table. */ |
38 | ||
39 | static reloc_howto_type elf_howto_table[] = | |
40 | { | |
41 | HOWTO (R_390_NONE, /* type */ | |
42 | 0, /* rightshift */ | |
6346d5ca | 43 | 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */ |
a85d7ed0 | 44 | 0, /* bitsize */ |
b34976b6 | 45 | FALSE, /* pc_relative */ |
a85d7ed0 NC |
46 | 0, /* bitpos */ |
47 | complain_overflow_dont, /* complain_on_overflow */ | |
48 | bfd_elf_generic_reloc, /* special_function */ | |
49 | "R_390_NONE", /* name */ | |
b34976b6 | 50 | FALSE, /* partial_inplace */ |
a85d7ed0 NC |
51 | 0, /* src_mask */ |
52 | 0, /* dst_mask */ | |
b34976b6 AM |
53 | FALSE), /* pcrel_offset */ |
54 | ||
5236c819 MS |
55 | HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, |
56 | bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE), | |
57 | HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
58 | bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE), | |
59 | HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
60 | bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE), | |
61 | HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
62 | bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE), | |
63 | HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
64 | bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE), | |
15f8604d | 65 | HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield, |
5236c819 MS |
66 | bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE), |
67 | HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
68 | bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE), | |
69 | HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
70 | bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE), | |
71 | HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
72 | bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE), | |
73 | HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
74 | bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE), | |
75 | HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
76 | bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE), | |
77 | HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
78 | bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE), | |
79 | HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
80 | bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE), | |
81 | HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
82 | bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE), | |
83 | HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
84 | bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE), | |
85 | HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
86 | bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE), | |
87 | HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
88 | bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE), | |
89 | HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
90 | bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE), | |
91 | HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
92 | bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE), | |
93 | HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
94 | bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE), | |
95 | HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
96 | bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE), | |
97 | EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */ | |
98 | EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */ | |
99 | EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */ | |
100 | EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */ | |
101 | HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
102 | bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE), | |
103 | HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
104 | bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE), | |
105 | EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */ | |
106 | HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
107 | bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE), | |
108 | HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
109 | bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE), | |
110 | HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
111 | bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE), | |
112 | EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */ | |
113 | HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
114 | bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE), | |
115 | HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
116 | bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE), | |
117 | HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
118 | bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE), | |
119 | EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */ | |
69fc87f1 MS |
120 | HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont, |
121 | s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE), | |
122 | HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
123 | s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE), | |
124 | HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
125 | s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE), | |
126 | HOWTO(R_390_TLS_GD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
127 | bfd_elf_generic_reloc, "R_390_TLS_GD32", FALSE, 0, 0xffffffff, FALSE), | |
128 | EMPTY_HOWTO (R_390_TLS_GD64), /* Empty entry for R_390_TLS_GD64. */ | |
129 | HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
130 | bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE), | |
131 | HOWTO(R_390_TLS_GOTIE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
132 | bfd_elf_generic_reloc, "R_390_TLS_GOTIE32", FALSE, 0, 0xffffffff, FALSE), | |
133 | EMPTY_HOWTO (R_390_TLS_GOTIE64), /* Empty entry for R_390_TLS_GOTIE64. */ | |
134 | HOWTO(R_390_TLS_LDM32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
135 | bfd_elf_generic_reloc, "R_390_TLS_LDM32", FALSE, 0, 0xffffffff, FALSE), | |
136 | EMPTY_HOWTO (R_390_TLS_LDM64), /* Empty entry for R_390_TLS_LDM64. */ | |
137 | HOWTO(R_390_TLS_IE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
138 | bfd_elf_generic_reloc, "R_390_TLS_IE32", FALSE, 0, 0xffffffff, FALSE), | |
139 | EMPTY_HOWTO (R_390_TLS_IE64), /* Empty entry for R_390_TLS_IE64. */ | |
140 | HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
141 | bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, 0xffffffff, TRUE), | |
142 | HOWTO(R_390_TLS_LE32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
143 | bfd_elf_generic_reloc, "R_390_TLS_LE32", FALSE, 0, 0xffffffff, FALSE), | |
144 | EMPTY_HOWTO (R_390_TLS_LE64), /* Empty entry for R_390_TLS_LE64. */ | |
145 | HOWTO(R_390_TLS_LDO32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
146 | bfd_elf_generic_reloc, "R_390_TLS_LDO32", FALSE, 0, 0xffffffff, FALSE), | |
147 | EMPTY_HOWTO (R_390_TLS_LDO64), /* Empty entry for R_390_TLS_LDO64. */ | |
148 | HOWTO(R_390_TLS_DTPMOD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
149 | bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, 0xffffffff, FALSE), | |
150 | HOWTO(R_390_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
151 | bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, 0xffffffff, FALSE), | |
152 | HOWTO(R_390_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
153 | bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, 0xffffffff, FALSE), | |
bd1ea41b MS |
154 | HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont, |
155 | s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE), | |
156 | HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont, | |
157 | s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE), | |
158 | HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont, | |
159 | s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE), | |
160 | HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont, | |
161 | s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE), | |
470b557a AK |
162 | HOWTO(R_390_IRELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, |
163 | bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, 0xffffffff, FALSE), | |
fb798c50 AK |
164 | HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield, |
165 | bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE), | |
166 | HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield, | |
167 | bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE), | |
168 | HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield, | |
169 | bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE), | |
170 | HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield, | |
171 | bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE), | |
a85d7ed0 NC |
172 | }; |
173 | ||
174 | /* GNU extension to record C++ vtable hierarchy. */ | |
175 | static reloc_howto_type elf32_s390_vtinherit_howto = | |
b34976b6 | 176 | HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE); |
a85d7ed0 | 177 | static reloc_howto_type elf32_s390_vtentry_howto = |
b34976b6 | 178 | HOWTO (R_390_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE); |
a85d7ed0 NC |
179 | |
180 | static reloc_howto_type * | |
2c3fc389 NC |
181 | elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
182 | bfd_reloc_code_real_type code) | |
a85d7ed0 | 183 | { |
ec338859 | 184 | switch (code) |
0451c93c MS |
185 | { |
186 | case BFD_RELOC_NONE: | |
187 | return &elf_howto_table[(int) R_390_NONE]; | |
188 | case BFD_RELOC_8: | |
189 | return &elf_howto_table[(int) R_390_8]; | |
190 | case BFD_RELOC_390_12: | |
191 | return &elf_howto_table[(int) R_390_12]; | |
192 | case BFD_RELOC_16: | |
193 | return &elf_howto_table[(int) R_390_16]; | |
194 | case BFD_RELOC_32: | |
195 | return &elf_howto_table[(int) R_390_32]; | |
196 | case BFD_RELOC_CTOR: | |
197 | return &elf_howto_table[(int) R_390_32]; | |
198 | case BFD_RELOC_32_PCREL: | |
199 | return &elf_howto_table[(int) R_390_PC32]; | |
200 | case BFD_RELOC_390_GOT12: | |
201 | return &elf_howto_table[(int) R_390_GOT12]; | |
202 | case BFD_RELOC_32_GOT_PCREL: | |
203 | return &elf_howto_table[(int) R_390_GOT32]; | |
204 | case BFD_RELOC_390_PLT32: | |
205 | return &elf_howto_table[(int) R_390_PLT32]; | |
206 | case BFD_RELOC_390_COPY: | |
207 | return &elf_howto_table[(int) R_390_COPY]; | |
208 | case BFD_RELOC_390_GLOB_DAT: | |
209 | return &elf_howto_table[(int) R_390_GLOB_DAT]; | |
210 | case BFD_RELOC_390_JMP_SLOT: | |
211 | return &elf_howto_table[(int) R_390_JMP_SLOT]; | |
212 | case BFD_RELOC_390_RELATIVE: | |
213 | return &elf_howto_table[(int) R_390_RELATIVE]; | |
214 | case BFD_RELOC_32_GOTOFF: | |
5236c819 | 215 | return &elf_howto_table[(int) R_390_GOTOFF32]; |
0451c93c MS |
216 | case BFD_RELOC_390_GOTPC: |
217 | return &elf_howto_table[(int) R_390_GOTPC]; | |
218 | case BFD_RELOC_390_GOT16: | |
219 | return &elf_howto_table[(int) R_390_GOT16]; | |
220 | case BFD_RELOC_16_PCREL: | |
221 | return &elf_howto_table[(int) R_390_PC16]; | |
fb798c50 AK |
222 | case BFD_RELOC_390_PC12DBL: |
223 | return &elf_howto_table[(int) R_390_PC12DBL]; | |
224 | case BFD_RELOC_390_PLT12DBL: | |
225 | return &elf_howto_table[(int) R_390_PLT12DBL]; | |
0451c93c MS |
226 | case BFD_RELOC_390_PC16DBL: |
227 | return &elf_howto_table[(int) R_390_PC16DBL]; | |
228 | case BFD_RELOC_390_PLT16DBL: | |
229 | return &elf_howto_table[(int) R_390_PLT16DBL]; | |
fb798c50 AK |
230 | case BFD_RELOC_390_PC24DBL: |
231 | return &elf_howto_table[(int) R_390_PC24DBL]; | |
232 | case BFD_RELOC_390_PLT24DBL: | |
233 | return &elf_howto_table[(int) R_390_PLT24DBL]; | |
befc3abb MS |
234 | case BFD_RELOC_390_PC32DBL: |
235 | return &elf_howto_table[(int) R_390_PC32DBL]; | |
236 | case BFD_RELOC_390_PLT32DBL: | |
237 | return &elf_howto_table[(int) R_390_PLT32DBL]; | |
238 | case BFD_RELOC_390_GOTPCDBL: | |
239 | return &elf_howto_table[(int) R_390_GOTPCDBL]; | |
240 | case BFD_RELOC_390_GOTENT: | |
241 | return &elf_howto_table[(int) R_390_GOTENT]; | |
5236c819 MS |
242 | case BFD_RELOC_16_GOTOFF: |
243 | return &elf_howto_table[(int) R_390_GOTOFF16]; | |
244 | case BFD_RELOC_390_GOTPLT12: | |
245 | return &elf_howto_table[(int) R_390_GOTPLT12]; | |
246 | case BFD_RELOC_390_GOTPLT16: | |
247 | return &elf_howto_table[(int) R_390_GOTPLT16]; | |
248 | case BFD_RELOC_390_GOTPLT32: | |
249 | return &elf_howto_table[(int) R_390_GOTPLT32]; | |
250 | case BFD_RELOC_390_GOTPLTENT: | |
251 | return &elf_howto_table[(int) R_390_GOTPLTENT]; | |
252 | case BFD_RELOC_390_PLTOFF16: | |
253 | return &elf_howto_table[(int) R_390_PLTOFF16]; | |
254 | case BFD_RELOC_390_PLTOFF32: | |
255 | return &elf_howto_table[(int) R_390_PLTOFF32]; | |
69fc87f1 MS |
256 | case BFD_RELOC_390_TLS_LOAD: |
257 | return &elf_howto_table[(int) R_390_TLS_LOAD]; | |
258 | case BFD_RELOC_390_TLS_GDCALL: | |
259 | return &elf_howto_table[(int) R_390_TLS_GDCALL]; | |
260 | case BFD_RELOC_390_TLS_LDCALL: | |
261 | return &elf_howto_table[(int) R_390_TLS_LDCALL]; | |
262 | case BFD_RELOC_390_TLS_GD32: | |
263 | return &elf_howto_table[(int) R_390_TLS_GD32]; | |
264 | case BFD_RELOC_390_TLS_GOTIE12: | |
265 | return &elf_howto_table[(int) R_390_TLS_GOTIE12]; | |
266 | case BFD_RELOC_390_TLS_GOTIE32: | |
267 | return &elf_howto_table[(int) R_390_TLS_GOTIE32]; | |
268 | case BFD_RELOC_390_TLS_LDM32: | |
269 | return &elf_howto_table[(int) R_390_TLS_LDM32]; | |
270 | case BFD_RELOC_390_TLS_IE32: | |
271 | return &elf_howto_table[(int) R_390_TLS_IE32]; | |
272 | case BFD_RELOC_390_TLS_IEENT: | |
273 | return &elf_howto_table[(int) R_390_TLS_IEENT]; | |
274 | case BFD_RELOC_390_TLS_LE32: | |
275 | return &elf_howto_table[(int) R_390_TLS_LE32]; | |
276 | case BFD_RELOC_390_TLS_LDO32: | |
277 | return &elf_howto_table[(int) R_390_TLS_LDO32]; | |
278 | case BFD_RELOC_390_TLS_DTPMOD: | |
279 | return &elf_howto_table[(int) R_390_TLS_DTPMOD]; | |
280 | case BFD_RELOC_390_TLS_DTPOFF: | |
281 | return &elf_howto_table[(int) R_390_TLS_DTPOFF]; | |
282 | case BFD_RELOC_390_TLS_TPOFF: | |
283 | return &elf_howto_table[(int) R_390_TLS_TPOFF]; | |
bd1ea41b MS |
284 | case BFD_RELOC_390_20: |
285 | return &elf_howto_table[(int) R_390_20]; | |
286 | case BFD_RELOC_390_GOT20: | |
287 | return &elf_howto_table[(int) R_390_GOT20]; | |
288 | case BFD_RELOC_390_GOTPLT20: | |
289 | return &elf_howto_table[(int) R_390_GOTPLT20]; | |
290 | case BFD_RELOC_390_TLS_GOTIE20: | |
291 | return &elf_howto_table[(int) R_390_TLS_GOTIE20]; | |
470b557a AK |
292 | case BFD_RELOC_390_IRELATIVE: |
293 | return &elf_howto_table[(int) R_390_IRELATIVE]; | |
0451c93c MS |
294 | case BFD_RELOC_VTABLE_INHERIT: |
295 | return &elf32_s390_vtinherit_howto; | |
296 | case BFD_RELOC_VTABLE_ENTRY: | |
297 | return &elf32_s390_vtentry_howto; | |
298 | default: | |
299 | break; | |
300 | } | |
a85d7ed0 NC |
301 | return 0; |
302 | } | |
303 | ||
157090f7 AM |
304 | static reloc_howto_type * |
305 | elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
306 | const char *r_name) | |
307 | { | |
308 | unsigned int i; | |
309 | ||
310 | for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++) | |
311 | if (elf_howto_table[i].name != NULL | |
312 | && strcasecmp (elf_howto_table[i].name, r_name) == 0) | |
313 | return &elf_howto_table[i]; | |
314 | ||
315 | if (strcasecmp (elf32_s390_vtinherit_howto.name, r_name) == 0) | |
316 | return &elf32_s390_vtinherit_howto; | |
317 | if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0) | |
318 | return &elf32_s390_vtentry_howto; | |
319 | ||
320 | return NULL; | |
321 | } | |
322 | ||
a85d7ed0 NC |
323 | /* We need to use ELF32_R_TYPE so we have our own copy of this function, |
324 | and elf32-s390.c has its own copy. */ | |
325 | ||
326 | static void | |
2c3fc389 NC |
327 | elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
328 | arelent *cache_ptr, | |
329 | Elf_Internal_Rela *dst) | |
a85d7ed0 | 330 | { |
d0fb9a8d JJ |
331 | unsigned int r_type = ELF32_R_TYPE(dst->r_info); |
332 | switch (r_type) | |
a85d7ed0 NC |
333 | { |
334 | case R_390_GNU_VTINHERIT: | |
335 | cache_ptr->howto = &elf32_s390_vtinherit_howto; | |
336 | break; | |
337 | ||
338 | case R_390_GNU_VTENTRY: | |
339 | cache_ptr->howto = &elf32_s390_vtentry_howto; | |
340 | break; | |
341 | ||
342 | default: | |
d0fb9a8d JJ |
343 | if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0])) |
344 | { | |
695344c0 | 345 | /* xgettext:c-format */ |
4eca0228 AM |
346 | _bfd_error_handler (_("%B: invalid relocation type %d"), |
347 | abfd, (int) r_type); | |
d0fb9a8d JJ |
348 | r_type = R_390_NONE; |
349 | } | |
350 | cache_ptr->howto = &elf_howto_table[r_type]; | |
dc810e39 | 351 | } |
a85d7ed0 NC |
352 | } |
353 | ||
69fc87f1 MS |
354 | /* A relocation function which doesn't do anything. */ |
355 | static bfd_reloc_status_type | |
2c3fc389 NC |
356 | s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
357 | arelent *reloc_entry, | |
358 | asymbol *symbol ATTRIBUTE_UNUSED, | |
359 | void * data ATTRIBUTE_UNUSED, | |
360 | asection *input_section, | |
361 | bfd *output_bfd, | |
362 | char **error_message ATTRIBUTE_UNUSED) | |
69fc87f1 MS |
363 | { |
364 | if (output_bfd) | |
365 | reloc_entry->address += input_section->output_offset; | |
366 | return bfd_reloc_ok; | |
367 | } | |
368 | ||
bd1ea41b MS |
369 | /* Handle the large displacement relocs. */ |
370 | static bfd_reloc_status_type | |
2c3fc389 NC |
371 | s390_elf_ldisp_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
372 | arelent *reloc_entry, | |
373 | asymbol *symbol, | |
374 | void * data ATTRIBUTE_UNUSED, | |
375 | asection *input_section, | |
376 | bfd *output_bfd, | |
377 | char **error_message ATTRIBUTE_UNUSED) | |
bd1ea41b MS |
378 | { |
379 | reloc_howto_type *howto = reloc_entry->howto; | |
380 | bfd_vma relocation; | |
381 | bfd_vma insn; | |
68ffbac6 | 382 | |
bd1ea41b MS |
383 | if (output_bfd != (bfd *) NULL |
384 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
385 | && (! howto->partial_inplace | |
386 | || reloc_entry->addend == 0)) | |
387 | { | |
388 | reloc_entry->address += input_section->output_offset; | |
389 | return bfd_reloc_ok; | |
390 | } | |
68ffbac6 | 391 | |
bd1ea41b MS |
392 | if (output_bfd != NULL) |
393 | return bfd_reloc_continue; | |
68ffbac6 | 394 | |
07515404 | 395 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
bd1ea41b | 396 | return bfd_reloc_outofrange; |
68ffbac6 | 397 | |
bd1ea41b MS |
398 | relocation = (symbol->value |
399 | + symbol->section->output_section->vma | |
400 | + symbol->section->output_offset); | |
401 | relocation += reloc_entry->addend; | |
402 | if (howto->pc_relative) | |
403 | { | |
404 | relocation -= (input_section->output_section->vma | |
405 | + input_section->output_offset); | |
406 | relocation -= reloc_entry->address; | |
407 | } | |
68ffbac6 | 408 | |
bd1ea41b MS |
409 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
410 | insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4; | |
411 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
68ffbac6 | 412 | |
bd1ea41b MS |
413 | if ((bfd_signed_vma) relocation < - 0x80000 |
414 | || (bfd_signed_vma) relocation > 0x7ffff) | |
415 | return bfd_reloc_overflow; | |
416 | else | |
417 | return bfd_reloc_ok; | |
418 | } | |
419 | ||
b34976b6 | 420 | static bfd_boolean |
2c3fc389 | 421 | elf_s390_is_local_label_name (bfd *abfd, const char *name) |
a85d7ed0 NC |
422 | { |
423 | if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L')) | |
b34976b6 | 424 | return TRUE; |
a85d7ed0 NC |
425 | |
426 | return _bfd_elf_is_local_label_name (abfd, name); | |
427 | } | |
428 | ||
429 | /* Functions for the 390 ELF linker. */ | |
430 | ||
431 | /* The name of the dynamic interpreter. This is put in the .interp | |
432 | section. */ | |
433 | ||
87049b0d | 434 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" |
a85d7ed0 | 435 | |
64285810 MS |
436 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
437 | copying dynamic variables from a shared lib into an app's dynbss | |
438 | section, and instead use a dynamic relocation to point into the | |
439 | shared lib. */ | |
440 | #define ELIMINATE_COPY_RELOCS 1 | |
441 | ||
a85d7ed0 NC |
442 | /* The size in bytes of the first entry in the procedure linkage table. */ |
443 | #define PLT_FIRST_ENTRY_SIZE 32 | |
444 | /* The size in bytes of an entry in the procedure linkage table. */ | |
dc810e39 | 445 | #define PLT_ENTRY_SIZE 32 |
a85d7ed0 NC |
446 | |
447 | #define GOT_ENTRY_SIZE 4 | |
448 | ||
470b557a AK |
449 | #define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela) |
450 | ||
a85d7ed0 NC |
451 | /* The first three entries in a procedure linkage table are reserved, |
452 | and the initial contents are unimportant (we zero them out). | |
453 | Subsequent entries look like this. See the SVR4 ABI 386 | |
454 | supplement to see how this works. */ | |
455 | ||
456 | /* For the s390, simple addr offset can only be 0 - 4096. | |
457 | To use the full 2 GB address space, several instructions | |
458 | are needed to load an address in a register and execute | |
459 | a branch( or just saving the address) | |
460 | ||
dc810e39 | 461 | Furthermore, only r 0 and 1 are free to use!!! */ |
a85d7ed0 NC |
462 | |
463 | /* The first 3 words in the GOT are then reserved. | |
464 | Word 0 is the address of the dynamic table. | |
465 | Word 1 is a pointer to a structure describing the object | |
466 | Word 2 is used to point to the loader entry address. | |
467 | ||
4cc11e76 | 468 | The code for position independent PLT entries looks like this: |
a85d7ed0 NC |
469 | |
470 | r12 holds addr of the current GOT at entry to the PLT | |
471 | ||
472 | The GOT holds the address in the PLT to be executed. | |
473 | The loader then gets: | |
474 | 24(15) = Pointer to the structure describing the object. | |
a7e28bbe | 475 | 28(15) = Offset into rela.plt |
a85d7ed0 NC |
476 | |
477 | The loader must then find the module where the function is | |
478 | and insert the address in the GOT. | |
479 | ||
480 | Note: 390 can only address +- 64 K relative. | |
481 | We check if offset > 65536, then make a relative branch -64xxx | |
482 | back to a previous defined branch | |
483 | ||
484 | PLT1: BASR 1,0 # 2 bytes | |
485 | L 1,22(1) # 4 bytes Load offset in GOT in r 1 | |
486 | L 1,(1,12) # 4 bytes Load address from GOT in r1 | |
487 | BCR 15,1 # 2 bytes Jump to address | |
488 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
489 | L 1,14(1) # 4 bytes Load offset in symol table in r1 | |
490 | BRC 15,-x # 4 bytes Jump to start of PLT | |
491 | .word 0 # 2 bytes filler | |
492 | .long ? # 4 bytes offset in GOT | |
a7e28bbe | 493 | .long ? # 4 bytes offset into rela.plt |
a85d7ed0 NC |
494 | |
495 | This was the general case. There are two additional, optimizes PLT | |
496 | definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768. | |
497 | First the one for GOT offsets < 4096: | |
498 | ||
499 | PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1 | |
500 | BCR 15,1 # 2 bytes Jump to address | |
501 | .word 0,0,0 # 6 bytes filler | |
502 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
a7e28bbe | 503 | L 1,14(1) # 4 bytes Load offset in rela.plt in r1 |
a85d7ed0 NC |
504 | BRC 15,-x # 4 bytes Jump to start of PLT |
505 | .word 0,0,0 # 6 bytes filler | |
a7e28bbe | 506 | .long ? # 4 bytes offset into rela.plt |
a85d7ed0 NC |
507 | |
508 | Second the one for GOT offsets < 32768: | |
509 | ||
510 | PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1 | |
511 | L 1,(1,12) # 4 bytes Load address from GOT to r1 | |
512 | BCR 15,1 # 2 bytes Jump to address | |
513 | .word 0 # 2 bytes filler | |
514 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
a7e28bbe | 515 | L 1,14(1) # 4 bytes Load offset in rela.plt in r1 |
a85d7ed0 NC |
516 | BRC 15,-x # 4 bytes Jump to start of PLT |
517 | .word 0,0,0 # 6 bytes filler | |
a7e28bbe | 518 | .long ? # 4 bytes offset into rela.plt |
a85d7ed0 NC |
519 | |
520 | Total = 32 bytes per PLT entry | |
521 | ||
522 | The code for static build PLT entries looks like this: | |
523 | ||
524 | PLT1: BASR 1,0 # 2 bytes | |
525 | L 1,22(1) # 4 bytes Load address of GOT entry | |
526 | L 1,0(0,1) # 4 bytes Load address from GOT in r1 | |
527 | BCR 15,1 # 2 bytes Jump to address | |
528 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
529 | L 1,14(1) # 4 bytes Load offset in symbol table in r1 | |
530 | BRC 15,-x # 4 bytes Jump to start of PLT | |
531 | .word 0 # 2 bytes filler | |
532 | .long ? # 4 bytes address of GOT entry | |
a7e28bbe | 533 | .long ? # 4 bytes offset into rela.plt */ |
a85d7ed0 | 534 | |
9aa17453 AK |
535 | static const bfd_byte elf_s390_plt_entry[PLT_ENTRY_SIZE] = |
536 | { | |
537 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
538 | 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */ | |
539 | 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */ | |
540 | 0x07, 0xf1, /* br %r1 */ | |
541 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
542 | 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */ | |
543 | 0xa7, 0xf4, 0x00, 0x00, /* j first plt */ | |
544 | 0x00, 0x00, /* padding */ | |
545 | 0x00, 0x00, 0x00, 0x00, /* GOT offset */ | |
546 | 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */ | |
547 | }; | |
548 | ||
549 | /* Generic PLT pic entry. */ | |
550 | static const bfd_byte elf_s390_plt_pic_entry[PLT_ENTRY_SIZE] = | |
551 | { | |
552 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
553 | 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */ | |
554 | 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */ | |
555 | 0x07, 0xf1, /* br %r1 */ | |
556 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
557 | 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */ | |
558 | 0xa7, 0xf4, 0x00, 0x00, /* j first plt */ | |
559 | 0x00, 0x00, /* padding */ | |
560 | 0x00, 0x00, 0x00, 0x00, /* GOT offset */ | |
561 | 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */ | |
562 | }; | |
563 | ||
564 | /* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced | |
565 | when generating the PLT slot with the GOT offset. */ | |
566 | static const bfd_byte elf_s390_plt_pic12_entry[PLT_ENTRY_SIZE] = | |
567 | { | |
568 | 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */ | |
569 | 0x07, 0xf1, /* br %r1 */ | |
570 | 0x00, 0x00, 0x00, 0x00, /* padding */ | |
571 | 0x00, 0x00, | |
572 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
573 | 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */ | |
574 | 0xa7, 0xf4, 0x00, 0x00, /* j first plt */ | |
575 | 0x00, 0x00, 0x00, 0x00, | |
576 | 0x00, 0x00, 0x00, 0x00 | |
577 | }; | |
578 | ||
579 | /* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced | |
580 | when generating the PLT slot with the GOT offset. */ | |
581 | static const bfd_byte elf_s390_plt_pic16_entry[PLT_ENTRY_SIZE] = | |
582 | { | |
583 | 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */ | |
584 | 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */ | |
585 | 0x07, 0xf1, /* br %r1 */ | |
586 | 0x00, 0x00, | |
587 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
588 | 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */ | |
589 | 0xa7, 0xf4, 0x00, 0x00, /* j first plt */ | |
590 | 0x00, 0x00, 0x00, 0x00, | |
591 | 0x00, 0x00, 0x00, 0x00, | |
592 | 0x00, 0x00 | |
593 | }; | |
a85d7ed0 | 594 | |
a7e28bbe | 595 | /* The first PLT entry pushes the offset into the rela.plt |
a85d7ed0 NC |
596 | from R1 onto the stack at 8(15) and the loader object info |
597 | at 12(15), loads the loader address in R1 and jumps to it. */ | |
598 | ||
599 | /* The first entry in the PLT for PIC code: | |
600 | ||
601 | PLT0: | |
a7e28bbe | 602 | ST 1,28(15) # R1 has offset into rela.plt |
a85d7ed0 | 603 | L 1,4(12) # Get loader ino(object struct address) |
dc810e39 | 604 | ST 1,24(15) # Store address |
a85d7ed0 NC |
605 | L 1,8(12) # Entry address of loader in R1 |
606 | BR 1 # Jump to loader | |
607 | ||
608 | The first entry in the PLT for static code: | |
609 | ||
610 | PLT0: | |
a7e28bbe | 611 | ST 1,28(15) # R1 has offset into rela.plt |
a85d7ed0 NC |
612 | BASR 1,0 |
613 | L 1,18(0,1) # Get address of GOT | |
614 | MVC 24(4,15),4(1) # Move loader ino to stack | |
615 | L 1,8(1) # Get address of loader | |
616 | BR 1 # Jump to loader | |
617 | .word 0 # filler | |
618 | .long got # address of GOT */ | |
619 | ||
9aa17453 AK |
620 | static const bfd_byte elf_s390_plt_first_entry[PLT_FIRST_ENTRY_SIZE] = |
621 | { | |
622 | 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */ | |
623 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
624 | 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */ | |
625 | 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */ | |
626 | 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */ | |
627 | 0x07, 0xf1, /* br %r1 */ | |
628 | 0x00, 0x00, 0x00, 0x00, | |
629 | 0x00, 0x00, 0x00, 0x00, | |
630 | 0x00, 0x00 | |
631 | }; | |
632 | ||
633 | static const bfd_byte elf_s390_plt_pic_first_entry[PLT_FIRST_ENTRY_SIZE] = | |
634 | { | |
635 | 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */ | |
636 | 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */ | |
637 | 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */ | |
638 | 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */ | |
639 | 0x07, 0xf1, /* br %r1 */ | |
640 | 0x00, 0x00, 0x00, 0x00, | |
641 | 0x00, 0x00, 0x00, 0x00, | |
642 | 0x00, 0x00, 0x00, 0x00, | |
643 | 0x00, 0x00 | |
644 | }; | |
a85d7ed0 | 645 | |
a85d7ed0 NC |
646 | |
647 | /* s390 ELF linker hash entry. */ | |
648 | ||
649 | struct elf_s390_link_hash_entry | |
650 | { | |
0451c93c | 651 | struct elf_link_hash_entry elf; |
a85d7ed0 | 652 | |
0451c93c | 653 | /* Track dynamic relocs copied for this symbol. */ |
00d8c7a9 | 654 | struct elf_dyn_relocs *dyn_relocs; |
5236c819 MS |
655 | |
656 | /* Number of GOTPLT references for a function. */ | |
657 | bfd_signed_vma gotplt_refcount; | |
69fc87f1 MS |
658 | |
659 | #define GOT_UNKNOWN 0 | |
660 | #define GOT_NORMAL 1 | |
661 | #define GOT_TLS_GD 2 | |
662 | #define GOT_TLS_IE 3 | |
663 | #define GOT_TLS_IE_NLT 4 | |
664 | unsigned char tls_type; | |
470b557a AK |
665 | |
666 | /* For pointer equality reasons we might need to change the symbol | |
667 | type from STT_GNU_IFUNC to STT_FUNC together with its value and | |
668 | section entry. So after alloc_dynrelocs only these values should | |
669 | be used. In order to check whether a symbol is IFUNC use | |
670 | s390_is_ifunc_symbol_p. */ | |
671 | bfd_vma ifunc_resolver_address; | |
672 | asection *ifunc_resolver_section; | |
a85d7ed0 NC |
673 | }; |
674 | ||
69fc87f1 MS |
675 | #define elf_s390_hash_entry(ent) \ |
676 | ((struct elf_s390_link_hash_entry *)(ent)) | |
677 | ||
470b557a AK |
678 | /* This structure represents an entry in the local PLT list needed for |
679 | local IFUNC symbols. */ | |
680 | struct plt_entry | |
681 | { | |
682 | /* The section of the local symbol. | |
683 | Set in relocate_section and used in finish_dynamic_sections. */ | |
684 | asection *sec; | |
685 | ||
686 | union | |
687 | { | |
688 | bfd_signed_vma refcount; | |
689 | bfd_vma offset; | |
690 | } plt; | |
691 | }; | |
692 | ||
0ffa91dd NC |
693 | /* NOTE: Keep this structure in sync with |
694 | the one declared in elf64-s390.c. */ | |
69fc87f1 MS |
695 | struct elf_s390_obj_tdata |
696 | { | |
697 | struct elf_obj_tdata root; | |
698 | ||
470b557a AK |
699 | /* A local PLT is needed for ifunc symbols. */ |
700 | struct plt_entry *local_plt; | |
701 | ||
0ffa91dd | 702 | /* TLS type for each local got entry. */ |
69fc87f1 MS |
703 | char *local_got_tls_type; |
704 | }; | |
705 | ||
706 | #define elf_s390_tdata(abfd) \ | |
707 | ((struct elf_s390_obj_tdata *) (abfd)->tdata.any) | |
708 | ||
470b557a AK |
709 | #define elf_s390_local_plt(abfd) \ |
710 | (elf_s390_tdata (abfd)->local_plt) | |
711 | ||
69fc87f1 MS |
712 | #define elf_s390_local_got_tls_type(abfd) \ |
713 | (elf_s390_tdata (abfd)->local_got_tls_type) | |
714 | ||
0ffa91dd NC |
715 | #define is_s390_elf(bfd) \ |
716 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
717 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 718 | && elf_object_id (bfd) == S390_ELF_DATA) |
0ffa91dd | 719 | |
69fc87f1 | 720 | static bfd_boolean |
62d7a5f6 | 721 | elf_s390_mkobject (bfd *abfd) |
69fc87f1 | 722 | { |
0ffa91dd | 723 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata), |
4dfe6ac6 | 724 | S390_ELF_DATA); |
69fc87f1 MS |
725 | } |
726 | ||
727 | static bfd_boolean | |
2c3fc389 | 728 | elf_s390_object_p (bfd *abfd) |
69fc87f1 | 729 | { |
69fc87f1 MS |
730 | /* Set the right machine number for an s390 elf32 file. */ |
731 | return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31); | |
732 | } | |
733 | ||
a85d7ed0 NC |
734 | /* s390 ELF linker hash table. */ |
735 | ||
736 | struct elf_s390_link_hash_table | |
737 | { | |
0451c93c | 738 | struct elf_link_hash_table elf; |
a85d7ed0 | 739 | |
0451c93c | 740 | /* Short-cuts to get to dynamic linker sections. */ |
0451c93c MS |
741 | asection *sdynbss; |
742 | asection *srelbss; | |
470b557a | 743 | asection *irelifunc; |
ec338859 | 744 | |
2c3fc389 NC |
745 | union |
746 | { | |
69fc87f1 MS |
747 | bfd_signed_vma refcount; |
748 | bfd_vma offset; | |
749 | } tls_ldm_got; | |
750 | ||
87d72d41 AM |
751 | /* Small local sym cache. */ |
752 | struct sym_cache sym_cache; | |
0451c93c | 753 | }; |
a85d7ed0 NC |
754 | |
755 | /* Get the s390 ELF linker hash table from a link_info structure. */ | |
756 | ||
757 | #define elf_s390_hash_table(p) \ | |
4dfe6ac6 NC |
758 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
759 | == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL) | |
a85d7ed0 | 760 | |
470b557a AK |
761 | #undef ELF64 |
762 | #include "elf-s390-common.c" | |
763 | ||
a85d7ed0 NC |
764 | /* Create an entry in an s390 ELF linker hash table. */ |
765 | ||
766 | static struct bfd_hash_entry * | |
2c3fc389 NC |
767 | link_hash_newfunc (struct bfd_hash_entry *entry, |
768 | struct bfd_hash_table *table, | |
769 | const char *string) | |
a85d7ed0 | 770 | { |
a85d7ed0 NC |
771 | /* Allocate the structure if it has not already been allocated by a |
772 | subclass. */ | |
0451c93c MS |
773 | if (entry == NULL) |
774 | { | |
775 | entry = bfd_hash_allocate (table, | |
776 | sizeof (struct elf_s390_link_hash_entry)); | |
777 | if (entry == NULL) | |
778 | return entry; | |
779 | } | |
ec338859 | 780 | |
a85d7ed0 | 781 | /* Call the allocation method of the superclass. */ |
0451c93c MS |
782 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
783 | if (entry != NULL) | |
a85d7ed0 | 784 | { |
0451c93c | 785 | struct elf_s390_link_hash_entry *eh; |
ec338859 | 786 | |
0451c93c MS |
787 | eh = (struct elf_s390_link_hash_entry *) entry; |
788 | eh->dyn_relocs = NULL; | |
5236c819 | 789 | eh->gotplt_refcount = 0; |
69fc87f1 | 790 | eh->tls_type = GOT_UNKNOWN; |
470b557a AK |
791 | eh->ifunc_resolver_address = 0; |
792 | eh->ifunc_resolver_section = NULL; | |
a85d7ed0 NC |
793 | } |
794 | ||
0451c93c | 795 | return entry; |
a85d7ed0 NC |
796 | } |
797 | ||
798 | /* Create an s390 ELF linker hash table. */ | |
799 | ||
800 | static struct bfd_link_hash_table * | |
2c3fc389 | 801 | elf_s390_link_hash_table_create (bfd *abfd) |
a85d7ed0 NC |
802 | { |
803 | struct elf_s390_link_hash_table *ret; | |
dc810e39 | 804 | bfd_size_type amt = sizeof (struct elf_s390_link_hash_table); |
a85d7ed0 | 805 | |
7bf52ea2 | 806 | ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt); |
0451c93c | 807 | if (ret == NULL) |
a85d7ed0 NC |
808 | return NULL; |
809 | ||
66eb6687 | 810 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
811 | sizeof (struct elf_s390_link_hash_entry), |
812 | S390_ELF_DATA)) | |
a85d7ed0 | 813 | { |
e2d34d7d | 814 | free (ret); |
a85d7ed0 NC |
815 | return NULL; |
816 | } | |
817 | ||
0451c93c MS |
818 | return &ret->elf.root; |
819 | } | |
820 | ||
821 | /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up | |
822 | shortcuts to them in our hash table. */ | |
823 | ||
b34976b6 | 824 | static bfd_boolean |
2c3fc389 | 825 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
0451c93c MS |
826 | { |
827 | struct elf_s390_link_hash_table *htab; | |
828 | ||
829 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 830 | return FALSE; |
0451c93c MS |
831 | |
832 | htab = elf_s390_hash_table (info); | |
3d4d4302 AM |
833 | htab->elf.sgot = bfd_get_linker_section (dynobj, ".got"); |
834 | htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt"); | |
835 | htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got"); | |
f41345a7 | 836 | if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot) |
0451c93c MS |
837 | abort (); |
838 | ||
b34976b6 | 839 | return TRUE; |
0451c93c MS |
840 | } |
841 | ||
842 | /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and | |
843 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our | |
844 | hash table. */ | |
845 | ||
b34976b6 | 846 | static bfd_boolean |
2c3fc389 | 847 | elf_s390_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
0451c93c MS |
848 | { |
849 | struct elf_s390_link_hash_table *htab; | |
850 | ||
851 | htab = elf_s390_hash_table (info); | |
f41345a7 | 852 | if (!htab->elf.sgot && !create_got_section (dynobj, info)) |
b34976b6 | 853 | return FALSE; |
0451c93c MS |
854 | |
855 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
b34976b6 | 856 | return FALSE; |
0451c93c | 857 | |
3d4d4302 AM |
858 | htab->elf.splt = bfd_get_linker_section (dynobj, ".plt"); |
859 | htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt"); | |
860 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); | |
0e1862bb | 861 | if (!bfd_link_pic (info)) |
3d4d4302 | 862 | htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
0451c93c | 863 | |
f41345a7 | 864 | if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss |
0e1862bb | 865 | || (!bfd_link_pic (info) && !htab->srelbss)) |
0451c93c MS |
866 | abort (); |
867 | ||
b34976b6 | 868 | return TRUE; |
a85d7ed0 NC |
869 | } |
870 | ||
0451c93c MS |
871 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
872 | ||
873 | static void | |
2c3fc389 NC |
874 | elf_s390_copy_indirect_symbol (struct bfd_link_info *info, |
875 | struct elf_link_hash_entry *dir, | |
876 | struct elf_link_hash_entry *ind) | |
0451c93c MS |
877 | { |
878 | struct elf_s390_link_hash_entry *edir, *eind; | |
879 | ||
880 | edir = (struct elf_s390_link_hash_entry *) dir; | |
881 | eind = (struct elf_s390_link_hash_entry *) ind; | |
882 | ||
883 | if (eind->dyn_relocs != NULL) | |
884 | { | |
885 | if (edir->dyn_relocs != NULL) | |
886 | { | |
00d8c7a9 AK |
887 | struct elf_dyn_relocs **pp; |
888 | struct elf_dyn_relocs *p; | |
0451c93c | 889 | |
fcfa13d2 | 890 | /* Add reloc counts against the indirect sym to the direct sym |
0451c93c MS |
891 | list. Merge any entries against the same section. */ |
892 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
893 | { | |
00d8c7a9 | 894 | struct elf_dyn_relocs *q; |
0451c93c MS |
895 | |
896 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
897 | if (q->sec == p->sec) | |
898 | { | |
899 | q->pc_count += p->pc_count; | |
900 | q->count += p->count; | |
901 | *pp = p->next; | |
902 | break; | |
903 | } | |
904 | if (q == NULL) | |
905 | pp = &p->next; | |
906 | } | |
907 | *pp = edir->dyn_relocs; | |
908 | } | |
909 | ||
910 | edir->dyn_relocs = eind->dyn_relocs; | |
911 | eind->dyn_relocs = NULL; | |
912 | } | |
913 | ||
69fc87f1 MS |
914 | if (ind->root.type == bfd_link_hash_indirect |
915 | && dir->got.refcount <= 0) | |
916 | { | |
917 | edir->tls_type = eind->tls_type; | |
918 | eind->tls_type = GOT_UNKNOWN; | |
919 | } | |
920 | ||
64285810 MS |
921 | if (ELIMINATE_COPY_RELOCS |
922 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
923 | && dir->dynamic_adjusted) |
924 | { | |
925 | /* If called to transfer flags for a weakdef during processing | |
926 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
927 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
928 | dir->ref_dynamic |= ind->ref_dynamic; | |
929 | dir->ref_regular |= ind->ref_regular; | |
930 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
931 | dir->needs_plt |= ind->needs_plt; | |
932 | } | |
64285810 | 933 | else |
fcfa13d2 | 934 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
0451c93c | 935 | } |
a85d7ed0 | 936 | |
69fc87f1 | 937 | static int |
2c3fc389 NC |
938 | elf_s390_tls_transition (struct bfd_link_info *info, |
939 | int r_type, | |
940 | int is_local) | |
69fc87f1 | 941 | { |
0e1862bb | 942 | if (bfd_link_pic (info)) |
69fc87f1 MS |
943 | return r_type; |
944 | ||
945 | switch (r_type) | |
946 | { | |
947 | case R_390_TLS_GD32: | |
948 | case R_390_TLS_IE32: | |
949 | if (is_local) | |
950 | return R_390_TLS_LE32; | |
951 | return R_390_TLS_IE32; | |
952 | case R_390_TLS_GOTIE32: | |
953 | if (is_local) | |
954 | return R_390_TLS_LE32; | |
955 | return R_390_TLS_GOTIE32; | |
956 | case R_390_TLS_LDM32: | |
957 | return R_390_TLS_LE32; | |
958 | } | |
959 | ||
960 | return r_type; | |
961 | } | |
962 | ||
a85d7ed0 NC |
963 | /* Look through the relocs for a section during the first phase, and |
964 | allocate space in the global offset table or procedure linkage | |
965 | table. */ | |
966 | ||
b34976b6 | 967 | static bfd_boolean |
2c3fc389 NC |
968 | elf_s390_check_relocs (bfd *abfd, |
969 | struct bfd_link_info *info, | |
970 | asection *sec, | |
971 | const Elf_Internal_Rela *relocs) | |
a85d7ed0 | 972 | { |
0451c93c | 973 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
974 | Elf_Internal_Shdr *symtab_hdr; |
975 | struct elf_link_hash_entry **sym_hashes; | |
a85d7ed0 NC |
976 | const Elf_Internal_Rela *rel; |
977 | const Elf_Internal_Rela *rel_end; | |
a85d7ed0 | 978 | asection *sreloc; |
5236c819 | 979 | bfd_signed_vma *local_got_refcounts; |
69fc87f1 | 980 | int tls_type, old_tls_type; |
470b557a | 981 | Elf_Internal_Sym *isym; |
a85d7ed0 | 982 | |
0e1862bb | 983 | if (bfd_link_relocatable (info)) |
b34976b6 | 984 | return TRUE; |
a85d7ed0 | 985 | |
0ffa91dd NC |
986 | BFD_ASSERT (is_s390_elf (abfd)); |
987 | ||
0451c93c | 988 | htab = elf_s390_hash_table (info); |
0ffa91dd | 989 | symtab_hdr = &elf_symtab_hdr (abfd); |
a85d7ed0 | 990 | sym_hashes = elf_sym_hashes (abfd); |
5236c819 | 991 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 992 | |
a85d7ed0 NC |
993 | sreloc = NULL; |
994 | ||
995 | rel_end = relocs + sec->reloc_count; | |
996 | for (rel = relocs; rel < rel_end; rel++) | |
997 | { | |
69fc87f1 | 998 | unsigned int r_type; |
a85d7ed0 NC |
999 | unsigned long r_symndx; |
1000 | struct elf_link_hash_entry *h; | |
1001 | ||
1002 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1003 | ||
0451c93c MS |
1004 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
1005 | { | |
695344c0 | 1006 | /* xgettext:c-format */ |
4eca0228 AM |
1007 | _bfd_error_handler (_("%B: bad symbol index: %d"), |
1008 | abfd, r_symndx); | |
b34976b6 | 1009 | return FALSE; |
0451c93c MS |
1010 | } |
1011 | ||
a85d7ed0 | 1012 | if (r_symndx < symtab_hdr->sh_info) |
470b557a AK |
1013 | { |
1014 | /* A local symbol. */ | |
1015 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1016 | abfd, r_symndx); | |
1017 | if (isym == NULL) | |
1018 | return FALSE; | |
1019 | ||
1020 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
1021 | { | |
1022 | struct plt_entry *plt; | |
1023 | ||
0cb79d69 AK |
1024 | if (htab->elf.dynobj == NULL) |
1025 | htab->elf.dynobj = abfd; | |
1026 | ||
470b557a AK |
1027 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) |
1028 | return FALSE; | |
1029 | ||
1030 | if (local_got_refcounts == NULL) | |
1031 | { | |
1032 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) | |
1033 | return FALSE; | |
1034 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1035 | } | |
1036 | plt = elf_s390_local_plt (abfd); | |
1037 | plt[r_symndx].plt.refcount++; | |
1038 | } | |
1039 | h = NULL; | |
1040 | } | |
a85d7ed0 | 1041 | else |
973a3492 L |
1042 | { |
1043 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1044 | while (h->root.type == bfd_link_hash_indirect | |
1045 | || h->root.type == bfd_link_hash_warning) | |
1046 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
1047 | |
1048 | /* PR15323, ref flags aren't set for references in the same | |
1049 | object. */ | |
1050 | h->root.non_ir_ref = 1; | |
973a3492 | 1051 | } |
a85d7ed0 | 1052 | |
5236c819 MS |
1053 | /* Create got section and local_got_refcounts array if they |
1054 | are needed. */ | |
69fc87f1 MS |
1055 | r_type = elf_s390_tls_transition (info, |
1056 | ELF32_R_TYPE (rel->r_info), | |
1057 | h == NULL); | |
1058 | switch (r_type) | |
a85d7ed0 NC |
1059 | { |
1060 | case R_390_GOT12: | |
5236c819 | 1061 | case R_390_GOT16: |
bd1ea41b | 1062 | case R_390_GOT20: |
a85d7ed0 | 1063 | case R_390_GOT32: |
befc3abb | 1064 | case R_390_GOTENT: |
5236c819 MS |
1065 | case R_390_GOTPLT12: |
1066 | case R_390_GOTPLT16: | |
bd1ea41b | 1067 | case R_390_GOTPLT20: |
5236c819 MS |
1068 | case R_390_GOTPLT32: |
1069 | case R_390_GOTPLTENT: | |
69fc87f1 MS |
1070 | case R_390_TLS_GD32: |
1071 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1072 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1073 | case R_390_TLS_GOTIE32: |
1074 | case R_390_TLS_IEENT: | |
1075 | case R_390_TLS_IE32: | |
1076 | case R_390_TLS_LDM32: | |
5236c819 MS |
1077 | if (h == NULL |
1078 | && local_got_refcounts == NULL) | |
a85d7ed0 | 1079 | { |
470b557a | 1080 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) |
5236c819 | 1081 | return FALSE; |
470b557a | 1082 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 1083 | } |
5236c819 MS |
1084 | /* Fall through. */ |
1085 | case R_390_GOTOFF16: | |
1086 | case R_390_GOTOFF32: | |
0451c93c | 1087 | case R_390_GOTPC: |
befc3abb | 1088 | case R_390_GOTPCDBL: |
f41345a7 | 1089 | if (htab->elf.sgot == NULL) |
0451c93c MS |
1090 | { |
1091 | if (htab->elf.dynobj == NULL) | |
1092 | htab->elf.dynobj = abfd; | |
1093 | if (!create_got_section (htab->elf.dynobj, info)) | |
b34976b6 | 1094 | return FALSE; |
0451c93c | 1095 | } |
5236c819 MS |
1096 | } |
1097 | ||
470b557a AK |
1098 | if (h != NULL) |
1099 | { | |
1100 | if (htab->elf.dynobj == NULL) | |
1101 | htab->elf.dynobj = abfd; | |
1102 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
1103 | return FALSE; | |
1104 | ||
1105 | /* Make sure an IFUNC symbol defined in a non-shared object | |
1106 | always gets a PLT slot. */ | |
1107 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
1108 | { | |
1109 | /* The symbol is called by the dynamic loader in order | |
1110 | to resolve the relocation. So it is in fact also | |
1111 | referenced. */ | |
1112 | h->ref_regular = 1; | |
1113 | h->needs_plt = 1; | |
1114 | } | |
1115 | } | |
69fc87f1 | 1116 | switch (r_type) |
5236c819 | 1117 | { |
5236c819 MS |
1118 | case R_390_GOTPC: |
1119 | case R_390_GOTPCDBL: | |
470b557a AK |
1120 | /* These relocs do not need a GOT slot. They just load the |
1121 | GOT pointer itself or address something else relative to | |
1122 | the GOT. Since the GOT pointer has been set up above we | |
1123 | are done. */ | |
a85d7ed0 | 1124 | break; |
01a53584 AK |
1125 | case R_390_GOTOFF16: |
1126 | case R_390_GOTOFF32: | |
1127 | if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular) | |
1128 | break; | |
1a0670f3 | 1129 | /* Fall through. */ |
a85d7ed0 | 1130 | |
fb798c50 | 1131 | case R_390_PLT12DBL: |
26e41594 | 1132 | case R_390_PLT16DBL: |
fb798c50 | 1133 | case R_390_PLT24DBL: |
26e41594 | 1134 | case R_390_PLT32DBL: |
a85d7ed0 | 1135 | case R_390_PLT32: |
5236c819 MS |
1136 | case R_390_PLTOFF16: |
1137 | case R_390_PLTOFF32: | |
a85d7ed0 | 1138 | /* This symbol requires a procedure linkage table entry. We |
26e41594 AM |
1139 | actually build the entry in adjust_dynamic_symbol, |
1140 | because this might be a case of linking PIC code which is | |
1141 | never referenced by a dynamic object, in which case we | |
1142 | don't need to generate a procedure linkage table entry | |
1143 | after all. */ | |
a85d7ed0 NC |
1144 | |
1145 | /* If this is a local symbol, we resolve it directly without | |
26e41594 | 1146 | creating a procedure linkage table entry. */ |
5236c819 MS |
1147 | if (h != NULL) |
1148 | { | |
f5385ebf | 1149 | h->needs_plt = 1; |
5236c819 MS |
1150 | h->plt.refcount += 1; |
1151 | } | |
1152 | break; | |
a85d7ed0 | 1153 | |
5236c819 MS |
1154 | case R_390_GOTPLT12: |
1155 | case R_390_GOTPLT16: | |
bd1ea41b | 1156 | case R_390_GOTPLT20: |
5236c819 MS |
1157 | case R_390_GOTPLT32: |
1158 | case R_390_GOTPLTENT: | |
1159 | /* This symbol requires either a procedure linkage table entry | |
1160 | or an entry in the local got. We actually build the entry | |
1161 | in adjust_dynamic_symbol because whether this is really a | |
1162 | global reference can change and with it the fact if we have | |
1163 | to create a plt entry or a local got entry. To be able to | |
1164 | make a once global symbol a local one we have to keep track | |
1165 | of the number of gotplt references that exist for this | |
1166 | symbol. */ | |
1167 | if (h != NULL) | |
1168 | { | |
1169 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++; | |
f5385ebf | 1170 | h->needs_plt = 1; |
5236c819 MS |
1171 | h->plt.refcount += 1; |
1172 | } | |
1173 | else | |
1174 | local_got_refcounts[r_symndx] += 1; | |
a85d7ed0 NC |
1175 | break; |
1176 | ||
69fc87f1 MS |
1177 | case R_390_TLS_LDM32: |
1178 | htab->tls_ldm_got.refcount += 1; | |
1179 | break; | |
1180 | ||
1181 | case R_390_TLS_IE32: | |
1182 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1183 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1184 | case R_390_TLS_GOTIE32: |
1185 | case R_390_TLS_IEENT: | |
0e1862bb | 1186 | if (bfd_link_pic (info)) |
69fc87f1 | 1187 | info->flags |= DF_STATIC_TLS; |
ae9a127f | 1188 | /* Fall through. */ |
69fc87f1 MS |
1189 | |
1190 | case R_390_GOT12: | |
26e41594 | 1191 | case R_390_GOT16: |
bd1ea41b | 1192 | case R_390_GOT20: |
69fc87f1 MS |
1193 | case R_390_GOT32: |
1194 | case R_390_GOTENT: | |
1195 | case R_390_TLS_GD32: | |
1196 | /* This symbol requires a global offset table entry. */ | |
1197 | switch (r_type) | |
1198 | { | |
1199 | default: | |
1200 | case R_390_GOT12: | |
1201 | case R_390_GOT16: | |
bd1ea41b | 1202 | case R_390_GOT20: |
69fc87f1 MS |
1203 | case R_390_GOT32: |
1204 | case R_390_GOTENT: | |
1205 | tls_type = GOT_NORMAL; | |
1206 | break; | |
1207 | case R_390_TLS_GD32: | |
1208 | tls_type = GOT_TLS_GD; | |
1209 | break; | |
1210 | case R_390_TLS_IE32: | |
1211 | case R_390_TLS_GOTIE32: | |
1212 | tls_type = GOT_TLS_IE; | |
1213 | break; | |
1214 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1215 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1216 | case R_390_TLS_IEENT: |
1217 | tls_type = GOT_TLS_IE_NLT; | |
1218 | break; | |
1219 | } | |
1220 | ||
1221 | if (h != NULL) | |
1222 | { | |
1223 | h->got.refcount += 1; | |
1224 | old_tls_type = elf_s390_hash_entry(h)->tls_type; | |
1225 | } | |
1226 | else | |
1227 | { | |
1228 | local_got_refcounts[r_symndx] += 1; | |
1229 | old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx]; | |
1230 | } | |
1231 | /* If a TLS symbol is accessed using IE at least once, | |
1232 | there is no point to use dynamic model for it. */ | |
1233 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN) | |
1234 | { | |
1235 | if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL) | |
1236 | { | |
4eca0228 | 1237 | _bfd_error_handler |
695344c0 | 1238 | /* xgettext:c-format */ |
d003868e AM |
1239 | (_("%B: `%s' accessed both as normal and thread local symbol"), |
1240 | abfd, h->root.root.string); | |
69fc87f1 MS |
1241 | return FALSE; |
1242 | } | |
1243 | if (old_tls_type > tls_type) | |
1244 | tls_type = old_tls_type; | |
1245 | } | |
1246 | ||
1247 | if (old_tls_type != tls_type) | |
1248 | { | |
1249 | if (h != NULL) | |
1250 | elf_s390_hash_entry (h)->tls_type = tls_type; | |
1251 | else | |
1252 | elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1253 | } | |
1254 | ||
1255 | if (r_type != R_390_TLS_IE32) | |
1256 | break; | |
ae9a127f | 1257 | /* Fall through. */ |
69fc87f1 MS |
1258 | |
1259 | case R_390_TLS_LE32: | |
e00d879a AK |
1260 | /* For static linking and executables this reloc will be |
1261 | calculated at linktime otherwise a TLS_TPOFF runtime | |
1262 | reloc will be generated. */ | |
0e1862bb | 1263 | if (r_type == R_390_TLS_LE32 && bfd_link_pie (info)) |
e00d879a AK |
1264 | break; |
1265 | ||
0e1862bb | 1266 | if (!bfd_link_pic (info)) |
69fc87f1 MS |
1267 | break; |
1268 | info->flags |= DF_STATIC_TLS; | |
ae9a127f | 1269 | /* Fall through. */ |
69fc87f1 | 1270 | |
26e41594 AM |
1271 | case R_390_8: |
1272 | case R_390_16: | |
a85d7ed0 | 1273 | case R_390_32: |
26e41594 | 1274 | case R_390_PC16: |
fb798c50 | 1275 | case R_390_PC12DBL: |
26e41594 | 1276 | case R_390_PC16DBL: |
fb798c50 | 1277 | case R_390_PC24DBL: |
befc3abb | 1278 | case R_390_PC32DBL: |
a85d7ed0 | 1279 | case R_390_PC32: |
99ba5125 | 1280 | if (h != NULL && bfd_link_executable (info)) |
0451c93c MS |
1281 | { |
1282 | /* If this reloc is in a read-only section, we might | |
1283 | need a copy reloc. We can't check reliably at this | |
1284 | stage whether the section is read-only, as input | |
1285 | sections have not yet been mapped to output sections. | |
1286 | Tentatively set the flag for now, and correct in | |
1287 | adjust_dynamic_symbol. */ | |
f5385ebf | 1288 | h->non_got_ref = 1; |
ec338859 | 1289 | |
0e1862bb | 1290 | if (!bfd_link_pic (info)) |
470b557a AK |
1291 | { |
1292 | /* We may need a .plt entry if the function this reloc | |
1293 | refers to is in a shared lib. */ | |
1294 | h->plt.refcount += 1; | |
1295 | } | |
0451c93c | 1296 | } |
a85d7ed0 NC |
1297 | |
1298 | /* If we are creating a shared library, and this is a reloc | |
0451c93c MS |
1299 | against a global symbol, or a non PC relative reloc |
1300 | against a local symbol, then we need to copy the reloc | |
1301 | into the shared library. However, if we are linking with | |
1302 | -Bsymbolic, we do not need to copy a reloc against a | |
1303 | global symbol which is defined in an object we are | |
1304 | including in the link (i.e., DEF_REGULAR is set). At | |
1305 | this point we have not seen all the input files, so it is | |
1306 | possible that DEF_REGULAR is not set now but will be set | |
1307 | later (it is never cleared). In case of a weak definition, | |
1308 | DEF_REGULAR may be cleared later by a strong definition in | |
1309 | a shared library. We account for that possibility below by | |
1310 | storing information in the relocs_copied field of the hash | |
1311 | table entry. A similar situation occurs when creating | |
1312 | shared libraries and symbol visibility changes render the | |
1313 | symbol local. | |
1314 | ||
1315 | If on the other hand, we are creating an executable, we | |
1316 | may need to keep relocations for symbols satisfied by a | |
1317 | dynamic library if we manage to avoid copy relocs for the | |
1318 | symbol. */ | |
0e1862bb | 1319 | if ((bfd_link_pic (info) |
0451c93c | 1320 | && (sec->flags & SEC_ALLOC) != 0 |
ec338859 | 1321 | && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16 |
fb798c50 | 1322 | && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL |
0451c93c | 1323 | && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL |
fb798c50 | 1324 | && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL |
befc3abb | 1325 | && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL |
0451c93c MS |
1326 | && ELF32_R_TYPE (rel->r_info) != R_390_PC32) |
1327 | || (h != NULL | |
8c21ca21 | 1328 | && (! SYMBOLIC_BIND (info, h) |
0451c93c | 1329 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1330 | || !h->def_regular)))) |
64285810 | 1331 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 1332 | && !bfd_link_pic (info) |
0451c93c MS |
1333 | && (sec->flags & SEC_ALLOC) != 0 |
1334 | && h != NULL | |
1335 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 1336 | || !h->def_regular))) |
a85d7ed0 | 1337 | { |
00d8c7a9 AK |
1338 | struct elf_dyn_relocs *p; |
1339 | struct elf_dyn_relocs **head; | |
ec338859 | 1340 | |
0451c93c MS |
1341 | /* We must copy these reloc types into the output file. |
1342 | Create a reloc section in dynobj and make room for | |
1343 | this reloc. */ | |
a85d7ed0 NC |
1344 | if (sreloc == NULL) |
1345 | { | |
0451c93c MS |
1346 | if (htab->elf.dynobj == NULL) |
1347 | htab->elf.dynobj = abfd; | |
a85d7ed0 | 1348 | |
83bac4b0 NC |
1349 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1350 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE); | |
1351 | ||
a85d7ed0 | 1352 | if (sreloc == NULL) |
83bac4b0 | 1353 | return FALSE; |
a85d7ed0 NC |
1354 | } |
1355 | ||
0451c93c MS |
1356 | /* If this is a global symbol, we count the number of |
1357 | relocations we need for this symbol. */ | |
1358 | if (h != NULL) | |
a85d7ed0 | 1359 | { |
ec338859 | 1360 | head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs; |
0451c93c MS |
1361 | } |
1362 | else | |
1363 | { | |
ec338859 AM |
1364 | /* Track dynamic relocs needed for local syms too. |
1365 | We really need local syms available to do this | |
1366 | easily. Oh well. */ | |
ec338859 | 1367 | asection *s; |
6edfbbad | 1368 | void *vpp; |
ae9a127f | 1369 | |
87d72d41 AM |
1370 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1371 | abfd, r_symndx); | |
1372 | if (isym == NULL) | |
b34976b6 | 1373 | return FALSE; |
ec338859 | 1374 | |
87d72d41 AM |
1375 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
1376 | if (s == NULL) | |
1377 | s = sec; | |
1378 | ||
6edfbbad | 1379 | vpp = &elf_section_data (s)->local_dynrel; |
00d8c7a9 | 1380 | head = (struct elf_dyn_relocs **) vpp; |
ec338859 AM |
1381 | } |
1382 | ||
1383 | p = *head; | |
1384 | if (p == NULL || p->sec != sec) | |
1385 | { | |
1386 | bfd_size_type amt = sizeof *p; | |
ae9a127f | 1387 | |
00d8c7a9 | 1388 | p = ((struct elf_dyn_relocs *) |
ec338859 AM |
1389 | bfd_alloc (htab->elf.dynobj, amt)); |
1390 | if (p == NULL) | |
b34976b6 | 1391 | return FALSE; |
ec338859 AM |
1392 | p->next = *head; |
1393 | *head = p; | |
1394 | p->sec = sec; | |
1395 | p->count = 0; | |
1396 | p->pc_count = 0; | |
a85d7ed0 | 1397 | } |
ec338859 AM |
1398 | |
1399 | p->count += 1; | |
1400 | if (ELF32_R_TYPE (rel->r_info) == R_390_PC16 | |
fb798c50 | 1401 | || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL |
ec338859 | 1402 | || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL |
fb798c50 | 1403 | || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL |
befc3abb | 1404 | || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL |
ec338859 AM |
1405 | || ELF32_R_TYPE (rel->r_info) == R_390_PC32) |
1406 | p->pc_count += 1; | |
a85d7ed0 | 1407 | } |
a85d7ed0 | 1408 | break; |
ec338859 | 1409 | |
a85d7ed0 NC |
1410 | /* This relocation describes the C++ object vtable hierarchy. |
1411 | Reconstruct it for later use during GC. */ | |
26e41594 | 1412 | case R_390_GNU_VTINHERIT: |
c152c796 | 1413 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
26e41594 AM |
1414 | return FALSE; |
1415 | break; | |
ec338859 | 1416 | |
a85d7ed0 NC |
1417 | /* This relocation describes which C++ vtable entries are actually |
1418 | used. Record for later use during GC. */ | |
26e41594 | 1419 | case R_390_GNU_VTENTRY: |
d17e0c6e JB |
1420 | BFD_ASSERT (h != NULL); |
1421 | if (h != NULL | |
1422 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
26e41594 AM |
1423 | return FALSE; |
1424 | break; | |
ec338859 | 1425 | |
a85d7ed0 NC |
1426 | default: |
1427 | break; | |
1428 | } | |
1429 | } | |
1430 | ||
b34976b6 | 1431 | return TRUE; |
a85d7ed0 NC |
1432 | } |
1433 | ||
1434 | /* Return the section that should be marked against GC for a given | |
1435 | relocation. */ | |
1436 | ||
1437 | static asection * | |
07adf181 AM |
1438 | elf_s390_gc_mark_hook (asection *sec, |
1439 | struct bfd_link_info *info, | |
1440 | Elf_Internal_Rela *rel, | |
1441 | struct elf_link_hash_entry *h, | |
1442 | Elf_Internal_Sym *sym) | |
a85d7ed0 NC |
1443 | { |
1444 | if (h != NULL) | |
07adf181 AM |
1445 | switch (ELF32_R_TYPE (rel->r_info)) |
1446 | { | |
1447 | case R_390_GNU_VTINHERIT: | |
1448 | case R_390_GNU_VTENTRY: | |
1449 | return NULL; | |
1450 | } | |
1451 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
a85d7ed0 | 1452 | |
a85d7ed0 NC |
1453 | } |
1454 | ||
1455 | /* Update the got entry reference counts for the section being removed. */ | |
1456 | ||
b34976b6 | 1457 | static bfd_boolean |
07adf181 AM |
1458 | elf_s390_gc_sweep_hook (bfd *abfd, |
1459 | struct bfd_link_info *info, | |
1460 | asection *sec, | |
1461 | const Elf_Internal_Rela *relocs) | |
a85d7ed0 | 1462 | { |
470b557a | 1463 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
1464 | Elf_Internal_Shdr *symtab_hdr; |
1465 | struct elf_link_hash_entry **sym_hashes; | |
1466 | bfd_signed_vma *local_got_refcounts; | |
1467 | const Elf_Internal_Rela *rel, *relend; | |
a85d7ed0 | 1468 | |
0e1862bb | 1469 | if (bfd_link_relocatable (info)) |
7dda2462 TG |
1470 | return TRUE; |
1471 | ||
470b557a AK |
1472 | htab = elf_s390_hash_table (info); |
1473 | if (htab == NULL) | |
1474 | return FALSE; | |
1475 | ||
ec338859 | 1476 | elf_section_data (sec)->local_dynrel = NULL; |
a85d7ed0 | 1477 | |
0ffa91dd | 1478 | symtab_hdr = &elf_symtab_hdr (abfd); |
0451c93c MS |
1479 | sym_hashes = elf_sym_hashes (abfd); |
1480 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
a85d7ed0 NC |
1481 | |
1482 | relend = relocs + sec->reloc_count; | |
1483 | for (rel = relocs; rel < relend; rel++) | |
5236c819 | 1484 | { |
26e41594 AM |
1485 | unsigned long r_symndx; |
1486 | unsigned int r_type; | |
1487 | struct elf_link_hash_entry *h = NULL; | |
1488 | ||
5236c819 | 1489 | r_symndx = ELF32_R_SYM (rel->r_info); |
26e41594 AM |
1490 | if (r_symndx >= symtab_hdr->sh_info) |
1491 | { | |
1492 | struct elf_s390_link_hash_entry *eh; | |
00d8c7a9 AK |
1493 | struct elf_dyn_relocs **pp; |
1494 | struct elf_dyn_relocs *p; | |
0451c93c | 1495 | |
26e41594 | 1496 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3eb128b2 AM |
1497 | while (h->root.type == bfd_link_hash_indirect |
1498 | || h->root.type == bfd_link_hash_warning) | |
1499 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
26e41594 | 1500 | eh = (struct elf_s390_link_hash_entry *) h; |
5236c819 | 1501 | |
26e41594 AM |
1502 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
1503 | if (p->sec == sec) | |
1504 | { | |
1505 | /* Everything must go for SEC. */ | |
1506 | *pp = p->next; | |
1507 | break; | |
1508 | } | |
1509 | } | |
470b557a AK |
1510 | else |
1511 | { | |
1512 | Elf_Internal_Sym *isym; | |
1513 | ||
1514 | /* A local symbol. */ | |
1515 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1516 | abfd, r_symndx); | |
1517 | if (isym == NULL) | |
1518 | return FALSE; | |
1519 | ||
1520 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
1521 | { | |
1522 | struct plt_entry *plt = elf_s390_local_plt (abfd); | |
1523 | if (plt[r_symndx].plt.refcount > 0) | |
1524 | plt[r_symndx].plt.refcount--; | |
1525 | } | |
1526 | } | |
26e41594 AM |
1527 | |
1528 | r_type = ELF32_R_TYPE (rel->r_info); | |
1529 | r_type = elf_s390_tls_transition (info, r_type, h != NULL); | |
69fc87f1 | 1530 | switch (r_type) |
5236c819 | 1531 | { |
69fc87f1 MS |
1532 | case R_390_TLS_LDM32: |
1533 | if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0) | |
1534 | elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1; | |
1535 | break; | |
1536 | ||
ef05be83 AK |
1537 | case R_390_GOTOFF16: |
1538 | case R_390_GOTOFF32: | |
d47b13e0 | 1539 | if (h != NULL && s390_is_ifunc_symbol_p (h) && h->def_regular) |
01a53584 AK |
1540 | { |
1541 | h->plt.refcount--; | |
1542 | break; | |
1543 | } | |
1544 | ||
ef05be83 AK |
1545 | case R_390_GOTPC: |
1546 | case R_390_GOTPCDBL: | |
1547 | break; | |
1548 | ||
69fc87f1 MS |
1549 | case R_390_TLS_GD32: |
1550 | case R_390_TLS_IE32: | |
1551 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1552 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1553 | case R_390_TLS_GOTIE32: |
1554 | case R_390_TLS_IEENT: | |
5236c819 MS |
1555 | case R_390_GOT12: |
1556 | case R_390_GOT16: | |
bd1ea41b | 1557 | case R_390_GOT20: |
5236c819 | 1558 | case R_390_GOT32: |
5236c819 MS |
1559 | case R_390_GOTENT: |
1560 | if (h != NULL) | |
1561 | { | |
1562 | if (h->got.refcount > 0) | |
1563 | h->got.refcount -= 1; | |
1564 | } | |
1565 | else if (local_got_refcounts != NULL) | |
1566 | { | |
1567 | if (local_got_refcounts[r_symndx] > 0) | |
1568 | local_got_refcounts[r_symndx] -= 1; | |
1569 | } | |
26e41594 | 1570 | break; |
a85d7ed0 | 1571 | |
5236c819 MS |
1572 | case R_390_8: |
1573 | case R_390_12: | |
1574 | case R_390_16: | |
bd1ea41b | 1575 | case R_390_20: |
5236c819 MS |
1576 | case R_390_32: |
1577 | case R_390_PC16: | |
fb798c50 | 1578 | case R_390_PC12DBL: |
5236c819 | 1579 | case R_390_PC16DBL: |
fb798c50 | 1580 | case R_390_PC24DBL: |
5236c819 MS |
1581 | case R_390_PC32DBL: |
1582 | case R_390_PC32: | |
0e1862bb | 1583 | if (bfd_link_pic (info)) |
26e41594 AM |
1584 | break; |
1585 | /* Fall through. */ | |
1586 | ||
fb798c50 | 1587 | case R_390_PLT12DBL: |
69fc87f1 | 1588 | case R_390_PLT16DBL: |
fb798c50 | 1589 | case R_390_PLT24DBL: |
69fc87f1 MS |
1590 | case R_390_PLT32DBL: |
1591 | case R_390_PLT32: | |
1592 | case R_390_PLTOFF16: | |
1593 | case R_390_PLTOFF32: | |
1594 | if (h != NULL) | |
1595 | { | |
1596 | if (h->plt.refcount > 0) | |
1597 | h->plt.refcount -= 1; | |
1598 | } | |
1599 | break; | |
1600 | ||
1601 | case R_390_GOTPLT12: | |
1602 | case R_390_GOTPLT16: | |
bd1ea41b | 1603 | case R_390_GOTPLT20: |
69fc87f1 MS |
1604 | case R_390_GOTPLT32: |
1605 | case R_390_GOTPLTENT: | |
1606 | if (h != NULL) | |
1607 | { | |
1608 | if (h->plt.refcount > 0) | |
1609 | { | |
1610 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--; | |
1611 | h->plt.refcount -= 1; | |
1612 | } | |
1613 | } | |
1614 | else if (local_got_refcounts != NULL) | |
1615 | { | |
1616 | if (local_got_refcounts[r_symndx] > 0) | |
1617 | local_got_refcounts[r_symndx] -= 1; | |
1618 | } | |
1619 | break; | |
1620 | ||
5236c819 MS |
1621 | default: |
1622 | break; | |
1623 | } | |
1624 | } | |
a85d7ed0 | 1625 | |
b34976b6 | 1626 | return TRUE; |
a85d7ed0 NC |
1627 | } |
1628 | ||
5236c819 MS |
1629 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
1630 | entry but we found we will not create any. Called when we find we will | |
1631 | not have any PLT for this symbol, by for example | |
1632 | elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
1633 | or elf_s390_size_dynamic_sections if no dynamic sections will be | |
1634 | created (we're only linking static objects). */ | |
1635 | ||
1636 | static void | |
2c3fc389 | 1637 | elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h) |
5236c819 MS |
1638 | { |
1639 | if (h->elf.root.type == bfd_link_hash_warning) | |
1640 | h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link; | |
1641 | ||
1642 | if (h->gotplt_refcount <= 0) | |
1643 | return; | |
1644 | ||
1645 | /* We simply add the number of gotplt references to the number | |
1646 | * of got references for this symbol. */ | |
1647 | h->elf.got.refcount += h->gotplt_refcount; | |
1648 | h->gotplt_refcount = -1; | |
1649 | } | |
1650 | ||
a85d7ed0 NC |
1651 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1652 | regular object. The current definition is in some section of the | |
1653 | dynamic object, but we're not including those sections. We have to | |
1654 | change the definition to something the rest of the link can | |
1655 | understand. */ | |
1656 | ||
b34976b6 | 1657 | static bfd_boolean |
2c3fc389 NC |
1658 | elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info, |
1659 | struct elf_link_hash_entry *h) | |
a85d7ed0 | 1660 | { |
0451c93c | 1661 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 | 1662 | asection *s; |
a85d7ed0 | 1663 | |
470b557a AK |
1664 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1665 | if (s390_is_ifunc_symbol_p (h)) | |
d8ee9e44 AK |
1666 | { |
1667 | /* All local STT_GNU_IFUNC references must be treated as local | |
1668 | calls via local PLT. */ | |
1669 | if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h)) | |
1670 | { | |
1671 | bfd_size_type pc_count = 0, count = 0; | |
1672 | struct elf_dyn_relocs **pp; | |
1673 | struct elf_s390_link_hash_entry *eh; | |
1674 | struct elf_dyn_relocs *p; | |
1675 | ||
1676 | eh = (struct elf_s390_link_hash_entry *) h; | |
1677 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1678 | { | |
1679 | pc_count += p->pc_count; | |
1680 | p->count -= p->pc_count; | |
1681 | p->pc_count = 0; | |
1682 | count += p->count; | |
1683 | if (p->count == 0) | |
1684 | *pp = p->next; | |
1685 | else | |
1686 | pp = &p->next; | |
1687 | } | |
1688 | ||
1689 | if (pc_count || count) | |
1690 | { | |
1691 | h->needs_plt = 1; | |
1692 | h->non_got_ref = 1; | |
1693 | if (h->plt.refcount <= 0) | |
1694 | h->plt.refcount = 1; | |
1695 | else | |
1696 | h->plt.refcount += 1; | |
1697 | } | |
1698 | } | |
1699 | ||
1700 | if (h->plt.refcount <= 0) | |
1701 | { | |
1702 | h->plt.offset = (bfd_vma) -1; | |
1703 | h->needs_plt = 0; | |
1704 | } | |
1705 | return TRUE; | |
1706 | } | |
470b557a | 1707 | |
a85d7ed0 NC |
1708 | /* If this is a function, put it in the procedure linkage table. We |
1709 | will fill in the contents of the procedure linkage table later | |
cedb70c5 | 1710 | (although we could actually do it here). */ |
a85d7ed0 | 1711 | if (h->type == STT_FUNC |
f5385ebf | 1712 | || h->needs_plt) |
a85d7ed0 | 1713 | { |
0451c93c | 1714 | if (h->plt.refcount <= 0 |
8c21ca21 AK |
1715 | || SYMBOL_CALLS_LOCAL (info, h) |
1716 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1717 | && h->root.type != bfd_link_hash_undefweak)) | |
a85d7ed0 NC |
1718 | { |
1719 | /* This case can occur if we saw a PLT32 reloc in an input | |
26e41594 AM |
1720 | file, but the symbol was never referred to by a dynamic |
1721 | object, or if all references were garbage collected. In | |
a85d7ed0 NC |
1722 | such a case, we don't actually need to build a procedure |
1723 | linkage table, and we can just do a PC32 reloc instead. */ | |
1724 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1725 | h->needs_plt = 0; |
5236c819 | 1726 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
a85d7ed0 NC |
1727 | } |
1728 | ||
b34976b6 | 1729 | return TRUE; |
a85d7ed0 | 1730 | } |
bbd7ec4a | 1731 | else |
0451c93c MS |
1732 | /* It's possible that we incorrectly decided a .plt reloc was |
1733 | needed for an R_390_PC32 reloc to a non-function sym in | |
1734 | check_relocs. We can't decide accurately between function and | |
1735 | non-function syms in check-relocs; Objects loaded later in | |
1736 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1737 | h->plt.offset = (bfd_vma) -1; |
a85d7ed0 NC |
1738 | |
1739 | /* If this is a weak symbol, and there is a real definition, the | |
1740 | processor independent code will have arranged for us to see the | |
1741 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1742 | if (h->u.weakdef != NULL) |
a85d7ed0 | 1743 | { |
f6e332e6 AM |
1744 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1745 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1746 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1747 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
64285810 | 1748 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
f6e332e6 | 1749 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 1750 | return TRUE; |
a85d7ed0 NC |
1751 | } |
1752 | ||
1753 | /* This is a reference to a symbol defined by a dynamic object which | |
1754 | is not a function. */ | |
1755 | ||
1756 | /* If we are creating a shared library, we must presume that the | |
1757 | only references to the symbol are via the global offset table. | |
1758 | For such cases we need not do anything here; the relocations will | |
1759 | be handled correctly by relocate_section. */ | |
0e1862bb | 1760 | if (bfd_link_pic (info)) |
b34976b6 | 1761 | return TRUE; |
a85d7ed0 NC |
1762 | |
1763 | /* If there are no references to this symbol that do not use the | |
1764 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 1765 | if (!h->non_got_ref) |
b34976b6 | 1766 | return TRUE; |
a85d7ed0 | 1767 | |
0451c93c MS |
1768 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1769 | if (info->nocopyreloc) | |
1770 | { | |
f5385ebf | 1771 | h->non_got_ref = 0; |
b34976b6 | 1772 | return TRUE; |
0451c93c MS |
1773 | } |
1774 | ||
64285810 | 1775 | if (ELIMINATE_COPY_RELOCS) |
0451c93c | 1776 | { |
64285810 | 1777 | struct elf_s390_link_hash_entry * eh; |
00d8c7a9 | 1778 | struct elf_dyn_relocs *p; |
0451c93c | 1779 | |
64285810 MS |
1780 | eh = (struct elf_s390_link_hash_entry *) h; |
1781 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1782 | { | |
1783 | s = p->sec->output_section; | |
1784 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1785 | break; | |
1786 | } | |
1787 | ||
1788 | /* If we didn't find any dynamic relocs in read-only sections, then | |
1789 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1790 | if (p == NULL) | |
1791 | { | |
f5385ebf | 1792 | h->non_got_ref = 0; |
64285810 MS |
1793 | return TRUE; |
1794 | } | |
0451c93c MS |
1795 | } |
1796 | ||
a85d7ed0 NC |
1797 | /* We must allocate the symbol in our .dynbss section, which will |
1798 | become part of the .bss section of the executable. There will be | |
1799 | an entry for this symbol in the .dynsym section. The dynamic | |
1800 | object will contain position independent code, so all references | |
1801 | from the dynamic object to this symbol will go through the global | |
1802 | offset table. The dynamic linker will use the .dynsym entry to | |
1803 | determine the address it must put in the global offset table, so | |
1804 | both the dynamic object and the regular object will refer to the | |
1805 | same memory location for the variable. */ | |
1806 | ||
0451c93c | 1807 | htab = elf_s390_hash_table (info); |
a85d7ed0 | 1808 | |
0451c93c MS |
1809 | /* We must generate a R_390_COPY reloc to tell the dynamic linker to |
1810 | copy the initial value out of the dynamic object and into the | |
1811 | runtime process image. */ | |
1d7e9d18 | 1812 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
a85d7ed0 | 1813 | { |
eea6121a | 1814 | htab->srelbss->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1815 | h->needs_copy = 1; |
a85d7ed0 NC |
1816 | } |
1817 | ||
0451c93c | 1818 | s = htab->sdynbss; |
a85d7ed0 | 1819 | |
6cabe1ea | 1820 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a85d7ed0 NC |
1821 | } |
1822 | ||
0451c93c MS |
1823 | /* Allocate space in .plt, .got and associated reloc sections for |
1824 | dynamic relocs. */ | |
1825 | ||
b34976b6 | 1826 | static bfd_boolean |
2c3fc389 | 1827 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
0451c93c MS |
1828 | { |
1829 | struct bfd_link_info *info; | |
1830 | struct elf_s390_link_hash_table *htab; | |
470b557a | 1831 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h; |
00d8c7a9 | 1832 | struct elf_dyn_relocs *p; |
0451c93c | 1833 | |
e92d460e | 1834 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1835 | return TRUE; |
0451c93c MS |
1836 | |
1837 | info = (struct bfd_link_info *) inf; | |
1838 | htab = elf_s390_hash_table (info); | |
1839 | ||
470b557a AK |
1840 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
1841 | here if it is defined and referenced in a non-shared object. */ | |
1842 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
61643fba | 1843 | return s390_elf_allocate_ifunc_dyn_relocs (info, h); |
470b557a AK |
1844 | else if (htab->elf.dynamic_sections_created |
1845 | && h->plt.refcount > 0) | |
0451c93c MS |
1846 | { |
1847 | /* Make sure this symbol is output as a dynamic symbol. | |
1848 | Undefined weak syms won't yet be marked as dynamic. */ | |
1849 | if (h->dynindx == -1 | |
f5385ebf | 1850 | && !h->forced_local) |
0451c93c | 1851 | { |
c152c796 | 1852 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1853 | return FALSE; |
0451c93c MS |
1854 | } |
1855 | ||
0e1862bb | 1856 | if (bfd_link_pic (info) |
4ec72bde | 1857 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
0451c93c | 1858 | { |
f41345a7 | 1859 | asection *s = htab->elf.splt; |
0451c93c MS |
1860 | |
1861 | /* If this is the first .plt entry, make room for the special | |
1862 | first entry. */ | |
eea6121a AM |
1863 | if (s->size == 0) |
1864 | s->size += PLT_FIRST_ENTRY_SIZE; | |
0451c93c | 1865 | |
eea6121a | 1866 | h->plt.offset = s->size; |
0451c93c MS |
1867 | |
1868 | /* If this symbol is not defined in a regular file, and we are | |
1869 | not generating a shared library, then set the symbol to this | |
1870 | location in the .plt. This is required to make function | |
1871 | pointers compare as equal between the normal executable and | |
1872 | the shared library. */ | |
0e1862bb | 1873 | if (! bfd_link_pic (info) |
f5385ebf | 1874 | && !h->def_regular) |
0451c93c MS |
1875 | { |
1876 | h->root.u.def.section = s; | |
1877 | h->root.u.def.value = h->plt.offset; | |
1878 | } | |
ec338859 | 1879 | |
0451c93c | 1880 | /* Make room for this entry. */ |
eea6121a | 1881 | s->size += PLT_ENTRY_SIZE; |
ec338859 | 1882 | |
0451c93c MS |
1883 | /* We also need to make an entry in the .got.plt section, which |
1884 | will be placed in the .got section by the linker script. */ | |
f41345a7 | 1885 | htab->elf.sgotplt->size += GOT_ENTRY_SIZE; |
0451c93c MS |
1886 | |
1887 | /* We also need to make an entry in the .rela.plt section. */ | |
f41345a7 | 1888 | htab->elf.srelplt->size += sizeof (Elf32_External_Rela); |
0451c93c MS |
1889 | } |
1890 | else | |
1891 | { | |
1892 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1893 | h->needs_plt = 0; |
5236c819 | 1894 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c | 1895 | } |
ec338859 | 1896 | } |
0451c93c MS |
1897 | else |
1898 | { | |
1899 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1900 | h->needs_plt = 0; |
5236c819 | 1901 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
ec338859 AM |
1902 | } |
1903 | ||
69fc87f1 MS |
1904 | /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to |
1905 | the binary, we can optimize a bit. IE32 and GOTIE32 get converted | |
1906 | to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT | |
1907 | we can save the dynamic TLS relocation. */ | |
1908 | if (h->got.refcount > 0 | |
0e1862bb | 1909 | && !bfd_link_pic (info) |
69fc87f1 MS |
1910 | && h->dynindx == -1 |
1911 | && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE) | |
0451c93c | 1912 | { |
69fc87f1 MS |
1913 | if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT) |
1914 | /* For the GOTIE access without a literal pool entry the offset has | |
1915 | to be stored somewhere. The immediate value in the instruction | |
1916 | is not bit enough so the value is stored in the got. */ | |
1917 | { | |
f41345a7 AK |
1918 | h->got.offset = htab->elf.sgot->size; |
1919 | htab->elf.sgot->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1920 | } |
1921 | else | |
1922 | h->got.offset = (bfd_vma) -1; | |
1923 | } | |
1924 | else if (h->got.refcount > 0) | |
ceada896 | 1925 | { |
0451c93c | 1926 | asection *s; |
b34976b6 | 1927 | bfd_boolean dyn; |
69fc87f1 | 1928 | int tls_type = elf_s390_hash_entry(h)->tls_type; |
0451c93c MS |
1929 | |
1930 | /* Make sure this symbol is output as a dynamic symbol. | |
1931 | Undefined weak syms won't yet be marked as dynamic. */ | |
1932 | if (h->dynindx == -1 | |
f5385ebf | 1933 | && !h->forced_local) |
0451c93c | 1934 | { |
c152c796 | 1935 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1936 | return FALSE; |
0451c93c MS |
1937 | } |
1938 | ||
f41345a7 | 1939 | s = htab->elf.sgot; |
eea6121a AM |
1940 | h->got.offset = s->size; |
1941 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1942 | /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */ |
1943 | if (tls_type == GOT_TLS_GD) | |
eea6121a | 1944 | s->size += GOT_ENTRY_SIZE; |
0451c93c | 1945 | dyn = htab->elf.dynamic_sections_created; |
69fc87f1 MS |
1946 | /* R_390_TLS_IE32 needs one dynamic relocation, |
1947 | R_390_TLS_GD32 needs one if local symbol and two if global. */ | |
1948 | if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1949 | || tls_type >= GOT_TLS_IE) | |
f41345a7 | 1950 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
69fc87f1 | 1951 | else if (tls_type == GOT_TLS_GD) |
f41345a7 | 1952 | htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela); |
82058a73 MS |
1953 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1954 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 1955 | && (bfd_link_pic (info) |
82058a73 | 1956 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
f41345a7 | 1957 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
0451c93c MS |
1958 | } |
1959 | else | |
1960 | h->got.offset = (bfd_vma) -1; | |
1961 | ||
0451c93c | 1962 | if (eh->dyn_relocs == NULL) |
b34976b6 | 1963 | return TRUE; |
0451c93c MS |
1964 | |
1965 | /* In the shared -Bsymbolic case, discard space allocated for | |
1966 | dynamic pc-relative relocs against symbols which turn out to be | |
1967 | defined in regular objects. For the normal shared case, discard | |
1968 | space for pc-relative relocs that have become local due to symbol | |
1969 | visibility changes. */ | |
1970 | ||
0e1862bb | 1971 | if (bfd_link_pic (info)) |
0451c93c | 1972 | { |
8c21ca21 | 1973 | if (SYMBOL_CALLS_LOCAL (info, h)) |
0451c93c | 1974 | { |
00d8c7a9 | 1975 | struct elf_dyn_relocs **pp; |
0451c93c MS |
1976 | |
1977 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1978 | { | |
1979 | p->count -= p->pc_count; | |
1980 | p->pc_count = 0; | |
1981 | if (p->count == 0) | |
1982 | *pp = p->next; | |
1983 | else | |
1984 | pp = &p->next; | |
1985 | } | |
1986 | } | |
82058a73 MS |
1987 | |
1988 | /* Also discard relocs on undefined weak syms with non-default | |
1989 | visibility. */ | |
22d606e9 | 1990 | if (eh->dyn_relocs != NULL |
82058a73 | 1991 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
1992 | { |
1993 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
1994 | eh->dyn_relocs = NULL; | |
1995 | ||
1996 | /* Make sure undefined weak symbols are output as a dynamic | |
1997 | symbol in PIEs. */ | |
1998 | else if (h->dynindx == -1 | |
1999 | && !h->forced_local) | |
2000 | { | |
2001 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2002 | return FALSE; | |
2003 | } | |
2004 | } | |
0451c93c | 2005 | } |
64285810 | 2006 | else if (ELIMINATE_COPY_RELOCS) |
0451c93c MS |
2007 | { |
2008 | /* For the non-shared case, discard space for relocs against | |
2009 | symbols which turn out to need copy relocs or are not | |
2010 | dynamic. */ | |
2011 | ||
f5385ebf AM |
2012 | if (!h->non_got_ref |
2013 | && ((h->def_dynamic | |
2014 | && !h->def_regular) | |
0451c93c MS |
2015 | || (htab->elf.dynamic_sections_created |
2016 | && (h->root.type == bfd_link_hash_undefweak | |
2017 | || h->root.type == bfd_link_hash_undefined)))) | |
2018 | { | |
2019 | /* Make sure this symbol is output as a dynamic symbol. | |
2020 | Undefined weak syms won't yet be marked as dynamic. */ | |
2021 | if (h->dynindx == -1 | |
f5385ebf | 2022 | && !h->forced_local) |
0451c93c | 2023 | { |
c152c796 | 2024 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2025 | return FALSE; |
0451c93c MS |
2026 | } |
2027 | ||
2028 | /* If that succeeded, we know we'll be keeping all the | |
2029 | relocs. */ | |
2030 | if (h->dynindx != -1) | |
2031 | goto keep; | |
2032 | } | |
2033 | ||
2034 | eh->dyn_relocs = NULL; | |
2035 | ||
ec338859 | 2036 | keep: ; |
0451c93c MS |
2037 | } |
2038 | ||
2039 | /* Finally, allocate space. */ | |
2040 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2041 | { | |
2042 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
ae9a127f | 2043 | |
eea6121a | 2044 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
0451c93c MS |
2045 | } |
2046 | ||
b34976b6 | 2047 | return TRUE; |
0451c93c MS |
2048 | } |
2049 | ||
2050 | /* Find any dynamic relocs that apply to read-only sections. */ | |
2051 | ||
b34976b6 | 2052 | static bfd_boolean |
2c3fc389 | 2053 | readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
0451c93c MS |
2054 | { |
2055 | struct elf_s390_link_hash_entry *eh; | |
00d8c7a9 | 2056 | struct elf_dyn_relocs *p; |
0451c93c MS |
2057 | |
2058 | eh = (struct elf_s390_link_hash_entry *) h; | |
2059 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2060 | { | |
2061 | asection *s = p->sec->output_section; | |
2062 | ||
2063 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2064 | { | |
2065 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
2066 | ||
2067 | info->flags |= DF_TEXTREL; | |
2068 | ||
2069 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 2070 | return FALSE; |
0451c93c MS |
2071 | } |
2072 | } | |
b34976b6 | 2073 | return TRUE; |
0451c93c MS |
2074 | } |
2075 | ||
a85d7ed0 NC |
2076 | /* Set the sizes of the dynamic sections. */ |
2077 | ||
b34976b6 | 2078 | static bfd_boolean |
2c3fc389 NC |
2079 | elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
2080 | struct bfd_link_info *info) | |
a85d7ed0 | 2081 | { |
0451c93c | 2082 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
2083 | bfd *dynobj; |
2084 | asection *s; | |
b34976b6 | 2085 | bfd_boolean relocs; |
0451c93c | 2086 | bfd *ibfd; |
a85d7ed0 | 2087 | |
0451c93c MS |
2088 | htab = elf_s390_hash_table (info); |
2089 | dynobj = htab->elf.dynobj; | |
2090 | if (dynobj == NULL) | |
2091 | abort (); | |
a85d7ed0 | 2092 | |
0451c93c | 2093 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
2094 | { |
2095 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 2096 | if (bfd_link_executable (info) && !info->nointerp) |
a85d7ed0 | 2097 | { |
3d4d4302 | 2098 | s = bfd_get_linker_section (dynobj, ".interp"); |
0451c93c MS |
2099 | if (s == NULL) |
2100 | abort (); | |
eea6121a | 2101 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
a85d7ed0 NC |
2102 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
2103 | } | |
2104 | } | |
a85d7ed0 | 2105 | |
0451c93c MS |
2106 | /* Set up .got offsets for local syms, and space for local dynamic |
2107 | relocs. */ | |
c72f2fb2 | 2108 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a85d7ed0 | 2109 | { |
0451c93c MS |
2110 | bfd_signed_vma *local_got; |
2111 | bfd_signed_vma *end_local_got; | |
69fc87f1 | 2112 | char *local_tls_type; |
0451c93c MS |
2113 | bfd_size_type locsymcount; |
2114 | Elf_Internal_Shdr *symtab_hdr; | |
2115 | asection *srela; | |
470b557a AK |
2116 | struct plt_entry *local_plt; |
2117 | unsigned int i; | |
a85d7ed0 | 2118 | |
0ffa91dd | 2119 | if (! is_s390_elf (ibfd)) |
a85d7ed0 NC |
2120 | continue; |
2121 | ||
0451c93c | 2122 | for (s = ibfd->sections; s != NULL; s = s->next) |
a85d7ed0 | 2123 | { |
00d8c7a9 | 2124 | struct elf_dyn_relocs *p; |
0451c93c | 2125 | |
6edfbbad | 2126 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
a85d7ed0 | 2127 | { |
ec338859 AM |
2128 | if (!bfd_is_abs_section (p->sec) |
2129 | && bfd_is_abs_section (p->sec->output_section)) | |
2130 | { | |
2131 | /* Input section has been discarded, either because | |
2132 | it is a copy of a linkonce section or due to | |
2133 | linker script /DISCARD/, so we'll be discarding | |
2134 | the relocs too. */ | |
2135 | } | |
248866a8 | 2136 | else if (p->count != 0) |
ec338859 AM |
2137 | { |
2138 | srela = elf_section_data (p->sec)->sreloc; | |
eea6121a | 2139 | srela->size += p->count * sizeof (Elf32_External_Rela); |
248866a8 AM |
2140 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
2141 | info->flags |= DF_TEXTREL; | |
ec338859 | 2142 | } |
a85d7ed0 NC |
2143 | } |
2144 | } | |
0451c93c MS |
2145 | |
2146 | local_got = elf_local_got_refcounts (ibfd); | |
2147 | if (!local_got) | |
2148 | continue; | |
2149 | ||
0ffa91dd | 2150 | symtab_hdr = &elf_symtab_hdr (ibfd); |
0451c93c MS |
2151 | locsymcount = symtab_hdr->sh_info; |
2152 | end_local_got = local_got + locsymcount; | |
69fc87f1 | 2153 | local_tls_type = elf_s390_local_got_tls_type (ibfd); |
f41345a7 AK |
2154 | s = htab->elf.sgot; |
2155 | srela = htab->elf.srelgot; | |
69fc87f1 | 2156 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
a85d7ed0 | 2157 | { |
0451c93c | 2158 | if (*local_got > 0) |
a85d7ed0 | 2159 | { |
eea6121a AM |
2160 | *local_got = s->size; |
2161 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 | 2162 | if (*local_tls_type == GOT_TLS_GD) |
eea6121a | 2163 | s->size += GOT_ENTRY_SIZE; |
0e1862bb | 2164 | if (bfd_link_pic (info)) |
eea6121a | 2165 | srela->size += sizeof (Elf32_External_Rela); |
a85d7ed0 NC |
2166 | } |
2167 | else | |
0451c93c MS |
2168 | *local_got = (bfd_vma) -1; |
2169 | } | |
470b557a AK |
2170 | local_plt = elf_s390_local_plt (ibfd); |
2171 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
2172 | { | |
2173 | if (local_plt[i].plt.refcount > 0) | |
2174 | { | |
2175 | local_plt[i].plt.offset = htab->elf.iplt->size; | |
2176 | htab->elf.iplt->size += PLT_ENTRY_SIZE; | |
2177 | htab->elf.igotplt->size += GOT_ENTRY_SIZE; | |
2178 | htab->elf.irelplt->size += RELA_ENTRY_SIZE; | |
2179 | } | |
2180 | else | |
2181 | local_plt[i].plt.offset = (bfd_vma) -1; | |
2182 | } | |
0451c93c MS |
2183 | } |
2184 | ||
69fc87f1 MS |
2185 | if (htab->tls_ldm_got.refcount > 0) |
2186 | { | |
2187 | /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32 | |
2188 | relocs. */ | |
f41345a7 AK |
2189 | htab->tls_ldm_got.offset = htab->elf.sgot->size; |
2190 | htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE; | |
2191 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); | |
69fc87f1 MS |
2192 | } |
2193 | else | |
2194 | htab->tls_ldm_got.offset = -1; | |
2195 | ||
0451c93c MS |
2196 | /* Allocate global sym .plt and .got entries, and space for global |
2197 | sym dynamic relocs. */ | |
2c3fc389 | 2198 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
0451c93c MS |
2199 | |
2200 | /* We now have determined the sizes of the various dynamic sections. | |
2201 | Allocate memory for them. */ | |
b34976b6 | 2202 | relocs = FALSE; |
0451c93c MS |
2203 | for (s = dynobj->sections; s != NULL; s = s->next) |
2204 | { | |
2205 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2206 | continue; | |
2207 | ||
f41345a7 AK |
2208 | if (s == htab->elf.splt |
2209 | || s == htab->elf.sgot | |
2210 | || s == htab->elf.sgotplt | |
470b557a AK |
2211 | || s == htab->sdynbss |
2212 | || s == htab->elf.iplt | |
2213 | || s == htab->elf.igotplt | |
2214 | || s == htab->irelifunc) | |
0451c93c MS |
2215 | { |
2216 | /* Strip this section if we don't need it; see the | |
2217 | comment below. */ | |
a85d7ed0 | 2218 | } |
0112cd26 | 2219 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
0451c93c | 2220 | { |
eea6121a | 2221 | if (s->size != 0) |
b34976b6 | 2222 | relocs = TRUE; |
ec338859 | 2223 | |
0451c93c MS |
2224 | /* We use the reloc_count field as a counter if we need |
2225 | to copy relocs into the output file. */ | |
2226 | s->reloc_count = 0; | |
2227 | } | |
2228 | else | |
a85d7ed0 NC |
2229 | { |
2230 | /* It's not one of our sections, so don't allocate space. */ | |
2231 | continue; | |
2232 | } | |
2233 | ||
eea6121a | 2234 | if (s->size == 0) |
a85d7ed0 | 2235 | { |
0451c93c MS |
2236 | /* If we don't need this section, strip it from the |
2237 | output file. This is to handle .rela.bss and | |
2238 | .rela.plt. We must create it in | |
2239 | create_dynamic_sections, because it must be created | |
2240 | before the linker maps input sections to output | |
2241 | sections. The linker does that before | |
2242 | adjust_dynamic_symbol is called, and it is that | |
2243 | function which decides whether anything needs to go | |
2244 | into these sections. */ | |
2245 | ||
8423293d | 2246 | s->flags |= SEC_EXCLUDE; |
a85d7ed0 NC |
2247 | continue; |
2248 | } | |
2249 | ||
c456f082 AM |
2250 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2251 | continue; | |
2252 | ||
0451c93c MS |
2253 | /* Allocate memory for the section contents. We use bfd_zalloc |
2254 | here in case unused entries are not reclaimed before the | |
2255 | section's contents are written out. This should not happen, | |
2256 | but this way if it does, we get a R_390_NONE reloc instead | |
2257 | of garbage. */ | |
eea6121a | 2258 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
0451c93c | 2259 | if (s->contents == NULL) |
b34976b6 | 2260 | return FALSE; |
a85d7ed0 | 2261 | } |
ec338859 | 2262 | |
0451c93c | 2263 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
2264 | { |
2265 | /* Add some entries to the .dynamic section. We fill in the | |
2266 | values later, in elf_s390_finish_dynamic_sections, but we | |
2267 | must add the entries now so that we get the correct size for | |
2268 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2269 | dynamic linker and used by the debugger. */ | |
dc810e39 | 2270 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2271 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
ec338859 | 2272 | |
0e1862bb | 2273 | if (bfd_link_executable (info)) |
a85d7ed0 | 2274 | { |
dc810e39 | 2275 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2276 | return FALSE; |
a85d7ed0 | 2277 | } |
ec338859 | 2278 | |
f41345a7 | 2279 | if (htab->elf.splt->size != 0) |
a85d7ed0 | 2280 | { |
dc810e39 AM |
2281 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2282 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2283 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2284 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2285 | return FALSE; |
a85d7ed0 | 2286 | } |
ec338859 | 2287 | |
a85d7ed0 | 2288 | if (relocs) |
26e41594 AM |
2289 | { |
2290 | if (!add_dynamic_entry (DT_RELA, 0) | |
2291 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2292 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 2293 | return FALSE; |
a85d7ed0 | 2294 | |
0451c93c MS |
2295 | /* If any dynamic relocs apply to a read-only section, |
2296 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 2297 | if ((info->flags & DF_TEXTREL) == 0) |
2c3fc389 | 2298 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
ec338859 | 2299 | |
0451c93c MS |
2300 | if ((info->flags & DF_TEXTREL) != 0) |
2301 | { | |
2302 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2303 | return FALSE; |
0451c93c | 2304 | } |
a85d7ed0 NC |
2305 | } |
2306 | } | |
dc810e39 | 2307 | #undef add_dynamic_entry |
ec338859 | 2308 | |
b34976b6 | 2309 | return TRUE; |
a85d7ed0 NC |
2310 | } |
2311 | ||
69fc87f1 MS |
2312 | /* Return the base VMA address which should be subtracted from real addresses |
2313 | when resolving @dtpoff relocation. | |
2314 | This is PT_TLS segment p_vaddr. */ | |
2315 | ||
2316 | static bfd_vma | |
2c3fc389 | 2317 | dtpoff_base (struct bfd_link_info *info) |
69fc87f1 | 2318 | { |
e1918d23 AM |
2319 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2320 | if (elf_hash_table (info)->tls_sec == NULL) | |
69fc87f1 | 2321 | return 0; |
e1918d23 | 2322 | return elf_hash_table (info)->tls_sec->vma; |
69fc87f1 MS |
2323 | } |
2324 | ||
2325 | /* Return the relocation value for @tpoff relocation | |
2326 | if STT_TLS virtual address is ADDRESS. */ | |
2327 | ||
2328 | static bfd_vma | |
2c3fc389 | 2329 | tpoff (struct bfd_link_info *info, bfd_vma address) |
69fc87f1 | 2330 | { |
e1918d23 | 2331 | struct elf_link_hash_table *htab = elf_hash_table (info); |
69fc87f1 | 2332 | |
e1918d23 AM |
2333 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2334 | if (htab->tls_sec == NULL) | |
69fc87f1 | 2335 | return 0; |
e1918d23 | 2336 | return htab->tls_size + htab->tls_sec->vma - address; |
69fc87f1 MS |
2337 | } |
2338 | ||
2339 | /* Complain if TLS instruction relocation is against an invalid | |
2340 | instruction. */ | |
2341 | ||
2342 | static void | |
2c3fc389 NC |
2343 | invalid_tls_insn (bfd *input_bfd, |
2344 | asection *input_section, | |
2345 | Elf_Internal_Rela *rel) | |
69fc87f1 MS |
2346 | { |
2347 | reloc_howto_type *howto; | |
2348 | ||
2349 | howto = elf_howto_table + ELF32_R_TYPE (rel->r_info); | |
4eca0228 | 2350 | _bfd_error_handler |
695344c0 | 2351 | /* xgettext:c-format */ |
d003868e AM |
2352 | (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"), |
2353 | input_bfd, | |
2354 | input_section, | |
69fc87f1 MS |
2355 | (long) rel->r_offset, |
2356 | howto->name); | |
77df2968 | 2357 | bfd_set_error (bfd_error_bad_value); |
69fc87f1 MS |
2358 | } |
2359 | ||
a85d7ed0 NC |
2360 | /* Relocate a 390 ELF section. */ |
2361 | ||
b34976b6 | 2362 | static bfd_boolean |
2c3fc389 NC |
2363 | elf_s390_relocate_section (bfd *output_bfd, |
2364 | struct bfd_link_info *info, | |
2365 | bfd *input_bfd, | |
2366 | asection *input_section, | |
2367 | bfd_byte *contents, | |
2368 | Elf_Internal_Rela *relocs, | |
2369 | Elf_Internal_Sym *local_syms, | |
2370 | asection **local_sections) | |
a85d7ed0 | 2371 | { |
0451c93c | 2372 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
2373 | Elf_Internal_Shdr *symtab_hdr; |
2374 | struct elf_link_hash_entry **sym_hashes; | |
2375 | bfd_vma *local_got_offsets; | |
a85d7ed0 NC |
2376 | Elf_Internal_Rela *rel; |
2377 | Elf_Internal_Rela *relend; | |
2378 | ||
0ffa91dd NC |
2379 | BFD_ASSERT (is_s390_elf (input_bfd)); |
2380 | ||
0451c93c | 2381 | htab = elf_s390_hash_table (info); |
0ffa91dd | 2382 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
a85d7ed0 NC |
2383 | sym_hashes = elf_sym_hashes (input_bfd); |
2384 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2385 | ||
a85d7ed0 NC |
2386 | rel = relocs; |
2387 | relend = relocs + input_section->reloc_count; | |
2388 | for (; rel < relend; rel++) | |
2389 | { | |
5236c819 | 2390 | unsigned int r_type; |
a85d7ed0 NC |
2391 | reloc_howto_type *howto; |
2392 | unsigned long r_symndx; | |
2393 | struct elf_link_hash_entry *h; | |
2394 | Elf_Internal_Sym *sym; | |
2395 | asection *sec; | |
0451c93c | 2396 | bfd_vma off; |
a85d7ed0 | 2397 | bfd_vma relocation; |
b34976b6 | 2398 | bfd_boolean unresolved_reloc; |
a85d7ed0 | 2399 | bfd_reloc_status_type r; |
69fc87f1 | 2400 | int tls_type; |
470b557a | 2401 | asection *base_got = htab->elf.sgot; |
ec338859 | 2402 | |
a85d7ed0 NC |
2403 | r_type = ELF32_R_TYPE (rel->r_info); |
2404 | if (r_type == (int) R_390_GNU_VTINHERIT | |
26e41594 AM |
2405 | || r_type == (int) R_390_GNU_VTENTRY) |
2406 | continue; | |
5236c819 | 2407 | if (r_type >= (int) R_390_max) |
a85d7ed0 NC |
2408 | { |
2409 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2410 | return FALSE; |
a85d7ed0 | 2411 | } |
ec338859 | 2412 | |
b491616a | 2413 | howto = elf_howto_table + r_type; |
a85d7ed0 | 2414 | r_symndx = ELF32_R_SYM (rel->r_info); |
5236c819 | 2415 | |
a85d7ed0 NC |
2416 | h = NULL; |
2417 | sym = NULL; | |
2418 | sec = NULL; | |
b34976b6 | 2419 | unresolved_reloc = FALSE; |
a85d7ed0 NC |
2420 | if (r_symndx < symtab_hdr->sh_info) |
2421 | { | |
2422 | sym = local_syms + r_symndx; | |
2423 | sec = local_sections[r_symndx]; | |
470b557a AK |
2424 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
2425 | { | |
2426 | struct plt_entry *local_plt = elf_s390_local_plt (input_bfd); | |
2427 | if (local_plt == NULL) | |
2428 | return FALSE; | |
2429 | ||
2430 | /* Address of the PLT slot. */ | |
2431 | relocation = (htab->elf.iplt->output_section->vma | |
2432 | + htab->elf.iplt->output_offset | |
2433 | + local_plt[r_symndx].plt.offset); | |
2434 | ||
2435 | switch (r_type) | |
2436 | { | |
31db78f6 AK |
2437 | case R_390_PLTOFF16: |
2438 | case R_390_PLTOFF32: | |
2439 | relocation -= htab->elf.sgot->output_section->vma; | |
2440 | break; | |
470b557a AK |
2441 | case R_390_GOTPLT12: |
2442 | case R_390_GOTPLT16: | |
2443 | case R_390_GOTPLT20: | |
2444 | case R_390_GOTPLT32: | |
2445 | case R_390_GOTPLTENT: | |
2446 | case R_390_GOT12: | |
2447 | case R_390_GOT16: | |
2448 | case R_390_GOT20: | |
2449 | case R_390_GOT32: | |
2450 | case R_390_GOTENT: | |
2451 | { | |
2452 | /* Write the PLT slot address into the GOT slot. */ | |
2453 | bfd_put_32 (output_bfd, relocation, | |
2454 | htab->elf.sgot->contents + | |
2455 | local_got_offsets[r_symndx]); | |
2456 | relocation = (local_got_offsets[r_symndx] + | |
2457 | htab->elf.sgot->output_offset); | |
2458 | ||
2459 | if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT) | |
2460 | relocation += htab->elf.sgot->output_section->vma; | |
2461 | break; | |
2462 | } | |
2463 | default: | |
2464 | break; | |
2465 | } | |
2466 | /* The output section is needed later in | |
2467 | finish_dynamic_section when creating the dynamic | |
2468 | relocation. */ | |
2469 | local_plt[r_symndx].sec = sec; | |
2470 | goto do_relocation; | |
2471 | } | |
2472 | else | |
2473 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
a85d7ed0 NC |
2474 | } |
2475 | else | |
2476 | { | |
560e09e9 | 2477 | bfd_boolean warned ATTRIBUTE_UNUSED; |
62d887d4 | 2478 | bfd_boolean ignored ATTRIBUTE_UNUSED; |
ec338859 | 2479 | |
b2a8e766 AM |
2480 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2481 | r_symndx, symtab_hdr, sym_hashes, | |
2482 | h, sec, relocation, | |
62d887d4 | 2483 | unresolved_reloc, warned, ignored); |
a85d7ed0 | 2484 | } |
ec338859 | 2485 | |
dbaa2011 | 2486 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 2487 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 2488 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 2489 | |
0e1862bb | 2490 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
2491 | continue; |
2492 | ||
a85d7ed0 NC |
2493 | switch (r_type) |
2494 | { | |
5236c819 MS |
2495 | case R_390_GOTPLT12: |
2496 | case R_390_GOTPLT16: | |
bd1ea41b | 2497 | case R_390_GOTPLT20: |
5236c819 MS |
2498 | case R_390_GOTPLT32: |
2499 | case R_390_GOTPLTENT: | |
2500 | /* There are three cases for a GOTPLT relocation. 1) The | |
2501 | relocation is against the jump slot entry of a plt that | |
2502 | will get emitted to the output file. 2) The relocation | |
2503 | is against the jump slot of a plt entry that has been | |
2504 | removed. elf_s390_adjust_gotplt has created a GOT entry | |
2505 | as replacement. 3) The relocation is against a local symbol. | |
2506 | Cases 2) and 3) are the same as the GOT relocation code | |
2507 | so we just have to test for case 1 and fall through for | |
2508 | the other two. */ | |
2509 | if (h != NULL && h->plt.offset != (bfd_vma) -1) | |
2510 | { | |
2511 | bfd_vma plt_index; | |
2512 | ||
470b557a AK |
2513 | if (s390_is_ifunc_symbol_p (h)) |
2514 | { | |
2515 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; | |
2516 | relocation = (plt_index * GOT_ENTRY_SIZE + | |
2517 | htab->elf.igotplt->output_offset); | |
2518 | if (r_type == R_390_GOTPLTENT) | |
2519 | relocation += htab->elf.igotplt->output_section->vma; | |
2520 | } | |
2521 | else | |
2522 | { | |
2523 | /* Calc. index no. | |
2524 | Current offset - size first entry / entry size. */ | |
2525 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / | |
2526 | PLT_ENTRY_SIZE; | |
2527 | ||
2528 | /* Offset in GOT is PLT index plus GOT headers(3) | |
2529 | times 4, addr & GOT addr. */ | |
2530 | relocation = (plt_index + 3) * GOT_ENTRY_SIZE; | |
2531 | if (r_type == R_390_GOTPLTENT) | |
2532 | relocation += htab->elf.sgot->output_section->vma; | |
2533 | } | |
5236c819 MS |
2534 | unresolved_reloc = FALSE; |
2535 | ||
5236c819 MS |
2536 | } |
2537 | /* Fall through. */ | |
2538 | ||
26e41594 AM |
2539 | case R_390_GOT12: |
2540 | case R_390_GOT16: | |
bd1ea41b | 2541 | case R_390_GOT20: |
26e41594 | 2542 | case R_390_GOT32: |
befc3abb | 2543 | case R_390_GOTENT: |
26e41594 AM |
2544 | /* Relocation is to the entry for this symbol in the global |
2545 | offset table. */ | |
470b557a | 2546 | if (base_got == NULL) |
0451c93c | 2547 | abort (); |
ec338859 | 2548 | |
26e41594 AM |
2549 | if (h != NULL) |
2550 | { | |
b34976b6 | 2551 | bfd_boolean dyn; |
ec338859 | 2552 | |
26e41594 | 2553 | off = h->got.offset; |
0451c93c | 2554 | dyn = htab->elf.dynamic_sections_created; |
470b557a AK |
2555 | |
2556 | if (s390_is_ifunc_symbol_p (h)) | |
2557 | { | |
2558 | BFD_ASSERT (h->plt.offset != (bfd_vma) -1); | |
2559 | if (off == (bfd_vma)-1) | |
2560 | { | |
2561 | /* No explicit GOT usage so redirect to the | |
2562 | got.iplt slot. */ | |
2563 | base_got = htab->elf.igotplt; | |
2564 | off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE; | |
2565 | } | |
2566 | else | |
2567 | { | |
2568 | /* Explicit GOT slots must contain the address | |
2569 | of the PLT slot. This will be handled in | |
2570 | finish_dynamic_symbol. */ | |
2571 | } | |
2572 | } | |
0e1862bb L |
2573 | else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
2574 | bfd_link_pic (info), | |
2575 | h) | |
2576 | || (bfd_link_pic (info) | |
470b557a AK |
2577 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
2578 | || (ELF_ST_VISIBILITY (h->other) | |
2579 | && h->root.type == bfd_link_hash_undefweak)) | |
2580 | ||
26e41594 AM |
2581 | { |
2582 | /* This is actually a static link, or it is a | |
2583 | -Bsymbolic link and the symbol is defined | |
2584 | locally, or the symbol was forced to be local | |
2585 | because of a version file. We must initialize | |
2586 | this entry in the global offset table. Since the | |
2587 | offset must always be a multiple of 2, we use the | |
2588 | least significant bit to record whether we have | |
2589 | initialized it already. | |
2590 | ||
2591 | When doing a dynamic link, we create a .rel.got | |
2592 | relocation entry to initialize the value. This | |
2593 | is done in the finish_dynamic_symbol routine. */ | |
2594 | if ((off & 1) != 0) | |
2595 | off &= ~1; | |
2596 | else | |
2597 | { | |
a85d7ed0 | 2598 | bfd_put_32 (output_bfd, relocation, |
470b557a | 2599 | base_got->contents + off); |
26e41594 AM |
2600 | h->got.offset |= 1; |
2601 | } | |
a63cc5f7 AK |
2602 | |
2603 | if ((h->def_regular | |
0e1862bb | 2604 | && bfd_link_pic (info) |
a63cc5f7 AK |
2605 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
2606 | /* lrl rx,sym@GOTENT -> larl rx, sym */ | |
2607 | && ((r_type == R_390_GOTENT | |
2608 | && (bfd_get_16 (input_bfd, | |
2609 | contents + rel->r_offset - 2) | |
2610 | & 0xff0f) == 0xc40d) | |
2611 | /* ly rx, sym@GOT(r12) -> larl rx, sym */ | |
2612 | || (r_type == R_390_GOT20 | |
2613 | && (bfd_get_32 (input_bfd, | |
2614 | contents + rel->r_offset - 2) | |
2615 | & 0xff00f000) == 0xe300c000 | |
2616 | && bfd_get_8 (input_bfd, | |
2617 | contents + rel->r_offset + 3) == 0x58))) | |
2618 | { | |
2619 | unsigned short new_insn = | |
2620 | (0xc000 | (bfd_get_8 (input_bfd, | |
2621 | contents + rel->r_offset - 1) & 0xf0)); | |
2622 | bfd_put_16 (output_bfd, new_insn, | |
2623 | contents + rel->r_offset - 2); | |
2624 | r_type = R_390_PC32DBL; | |
2625 | rel->r_addend = 2; | |
2626 | howto = elf_howto_table + r_type; | |
2627 | relocation = h->root.u.def.value | |
2628 | + h->root.u.def.section->output_section->vma | |
2629 | + h->root.u.def.section->output_offset; | |
2630 | goto do_relocation; | |
2631 | } | |
26e41594 | 2632 | } |
0451c93c | 2633 | else |
b34976b6 | 2634 | unresolved_reloc = FALSE; |
26e41594 AM |
2635 | } |
2636 | else | |
2637 | { | |
0451c93c MS |
2638 | if (local_got_offsets == NULL) |
2639 | abort (); | |
a85d7ed0 | 2640 | |
26e41594 | 2641 | off = local_got_offsets[r_symndx]; |
a85d7ed0 | 2642 | |
26e41594 AM |
2643 | /* The offset must always be a multiple of 4. We use |
2644 | the least significant bit to record whether we have | |
2645 | already generated the necessary reloc. */ | |
2646 | if ((off & 1) != 0) | |
2647 | off &= ~1; | |
2648 | else | |
2649 | { | |
2650 | bfd_put_32 (output_bfd, relocation, | |
f41345a7 | 2651 | htab->elf.sgot->contents + off); |
a85d7ed0 | 2652 | |
0e1862bb | 2653 | if (bfd_link_pic (info)) |
26e41594 AM |
2654 | { |
2655 | asection *srelgot; | |
2656 | Elf_Internal_Rela outrel; | |
947216bf | 2657 | bfd_byte *loc; |
a85d7ed0 | 2658 | |
f41345a7 | 2659 | srelgot = htab->elf.srelgot; |
0451c93c MS |
2660 | if (srelgot == NULL) |
2661 | abort (); | |
a85d7ed0 | 2662 | |
f41345a7 AK |
2663 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2664 | + htab->elf.sgot->output_offset | |
26e41594 AM |
2665 | + off); |
2666 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
a85d7ed0 | 2667 | outrel.r_addend = relocation; |
947216bf AM |
2668 | loc = srelgot->contents; |
2669 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
26e41594 AM |
2670 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
2671 | } | |
a85d7ed0 | 2672 | |
26e41594 AM |
2673 | local_got_offsets[r_symndx] |= 1; |
2674 | } | |
2675 | } | |
a85d7ed0 | 2676 | |
0451c93c MS |
2677 | if (off >= (bfd_vma) -2) |
2678 | abort (); | |
a85d7ed0 | 2679 | |
470b557a | 2680 | relocation = base_got->output_offset + off; |
befc3abb | 2681 | |
ae9a127f NC |
2682 | /* For @GOTENT the relocation is against the offset between |
2683 | the instruction and the symbols entry in the GOT and not | |
2684 | between the start of the GOT and the symbols entry. We | |
2685 | add the vma of the GOT to get the correct value. */ | |
5236c819 MS |
2686 | if ( r_type == R_390_GOTENT |
2687 | || r_type == R_390_GOTPLTENT) | |
470b557a | 2688 | relocation += base_got->output_section->vma; |
befc3abb | 2689 | |
26e41594 | 2690 | break; |
dc810e39 | 2691 | |
5236c819 | 2692 | case R_390_GOTOFF16: |
26e41594 AM |
2693 | case R_390_GOTOFF32: |
2694 | /* Relocation is relative to the start of the global offset | |
2695 | table. */ | |
2696 | ||
01a53584 AK |
2697 | if (h != NULL |
2698 | && s390_is_ifunc_symbol_p (h) | |
2699 | && h->def_regular | |
2700 | && !bfd_link_executable (info)) | |
2701 | { | |
2702 | relocation = (htab->elf.iplt->output_section->vma | |
2703 | + htab->elf.iplt->output_offset | |
2704 | + h->plt.offset | |
2705 | - htab->elf.sgot->output_section->vma); | |
2706 | goto do_relocation; | |
2707 | } | |
2708 | ||
26e41594 AM |
2709 | /* Note that sgot->output_offset is not involved in this |
2710 | calculation. We always want the start of .got. If we | |
2711 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
2712 | permitted by the ABI, we might have to change this | |
2713 | calculation. */ | |
f41345a7 | 2714 | relocation -= htab->elf.sgot->output_section->vma; |
26e41594 AM |
2715 | break; |
2716 | ||
2717 | case R_390_GOTPC: | |
befc3abb | 2718 | case R_390_GOTPCDBL: |
26e41594 | 2719 | /* Use global offset table as symbol value. */ |
f41345a7 | 2720 | relocation = htab->elf.sgot->output_section->vma; |
b34976b6 | 2721 | unresolved_reloc = FALSE; |
26e41594 | 2722 | break; |
a85d7ed0 | 2723 | |
fb798c50 | 2724 | case R_390_PLT12DBL: |
26e41594 | 2725 | case R_390_PLT16DBL: |
fb798c50 | 2726 | case R_390_PLT24DBL: |
26e41594 AM |
2727 | case R_390_PLT32DBL: |
2728 | case R_390_PLT32: | |
2729 | /* Relocation is to the entry for this symbol in the | |
2730 | procedure linkage table. */ | |
a85d7ed0 | 2731 | |
26e41594 AM |
2732 | /* Resolve a PLT32 reloc against a local symbol directly, |
2733 | without using the procedure linkage table. */ | |
2734 | if (h == NULL) | |
2735 | break; | |
a85d7ed0 | 2736 | |
26e41594 | 2737 | if (h->plt.offset == (bfd_vma) -1 |
470b557a | 2738 | || (htab->elf.splt == NULL && htab->elf.iplt == NULL)) |
26e41594 AM |
2739 | { |
2740 | /* We didn't make a PLT entry for this symbol. This | |
2741 | happens when statically linking PIC code, or when | |
2742 | using -Bsymbolic. */ | |
2743 | break; | |
2744 | } | |
2745 | ||
470b557a AK |
2746 | if (s390_is_ifunc_symbol_p (h)) |
2747 | relocation = (htab->elf.iplt->output_section->vma | |
2748 | + htab->elf.iplt->output_offset | |
2749 | + h->plt.offset); | |
2750 | else | |
2751 | relocation = (htab->elf.splt->output_section->vma | |
2752 | + htab->elf.splt->output_offset | |
2753 | + h->plt.offset); | |
b34976b6 | 2754 | unresolved_reloc = FALSE; |
26e41594 | 2755 | break; |
a85d7ed0 | 2756 | |
5236c819 MS |
2757 | case R_390_PLTOFF16: |
2758 | case R_390_PLTOFF32: | |
26e41594 AM |
2759 | /* Relocation is to the entry for this symbol in the |
2760 | procedure linkage table relative to the start of the GOT. */ | |
5236c819 MS |
2761 | |
2762 | /* For local symbols or if we didn't make a PLT entry for | |
2763 | this symbol resolve the symbol directly. */ | |
31db78f6 | 2764 | if (h == NULL |
5236c819 | 2765 | || h->plt.offset == (bfd_vma) -1 |
31db78f6 | 2766 | || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h))) |
5236c819 | 2767 | { |
f41345a7 | 2768 | relocation -= htab->elf.sgot->output_section->vma; |
5236c819 MS |
2769 | break; |
2770 | } | |
2771 | ||
470b557a AK |
2772 | if (s390_is_ifunc_symbol_p (h)) |
2773 | relocation = (htab->elf.iplt->output_section->vma | |
2774 | + htab->elf.iplt->output_offset | |
2775 | + h->plt.offset | |
2776 | - htab->elf.sgot->output_section->vma); | |
2777 | else | |
2778 | relocation = (htab->elf.splt->output_section->vma | |
2779 | + htab->elf.splt->output_offset | |
2780 | + h->plt.offset | |
2781 | - htab->elf.sgot->output_section->vma); | |
5236c819 | 2782 | unresolved_reloc = FALSE; |
26e41594 AM |
2783 | break; |
2784 | ||
26e41594 | 2785 | case R_390_PC16: |
fb798c50 | 2786 | case R_390_PC12DBL: |
26e41594 | 2787 | case R_390_PC16DBL: |
fb798c50 | 2788 | case R_390_PC24DBL: |
26e41594 AM |
2789 | case R_390_PC32DBL: |
2790 | case R_390_PC32: | |
99ba5125 AK |
2791 | if (h != NULL |
2792 | && s390_is_ifunc_symbol_p (h) | |
2793 | && h->def_regular | |
2794 | && !bfd_link_executable (info)) | |
2795 | { | |
2796 | /* This will not work our if the function does not | |
2797 | happen to set up the GOT pointer for some other | |
2798 | reason. 31 bit PLT entries require r12 to hold the | |
2799 | GOT pointer. | |
2800 | FIXME: Implement an errorcheck. | |
2801 | NOTE: It will work when brasl is not available | |
2802 | (e.g. with -m31 -march=g5) since a local function | |
2803 | call then does use GOTOFF which implies r12 being set | |
2804 | up. */ | |
2805 | relocation = (htab->elf.iplt->output_section->vma | |
2806 | + htab->elf.iplt->output_offset | |
2807 | + h ->plt.offset); | |
2808 | goto do_relocation; | |
2809 | } | |
1a0670f3 | 2810 | /* Fall through. */ |
99ba5125 AK |
2811 | |
2812 | case R_390_8: | |
2813 | case R_390_16: | |
2814 | case R_390_32: | |
470b557a AK |
2815 | if (h != NULL |
2816 | && s390_is_ifunc_symbol_p (h) | |
2817 | && h->def_regular) | |
2818 | { | |
0e1862bb | 2819 | if (!bfd_link_pic (info) || !h->non_got_ref) |
470b557a AK |
2820 | { |
2821 | /* For a non-shared object STT_GNU_IFUNC symbol must | |
2822 | go through PLT. */ | |
2823 | relocation = (htab->elf.iplt->output_section->vma | |
2824 | + htab->elf.iplt->output_offset | |
2825 | + h ->plt.offset); | |
2826 | goto do_relocation; | |
2827 | } | |
2828 | else | |
2829 | { | |
2830 | /* For shared objects a runtime relocation is needed. */ | |
2831 | ||
2832 | Elf_Internal_Rela outrel; | |
2833 | asection *sreloc; | |
2834 | ||
2835 | /* Need a dynamic relocation to get the real function | |
2836 | address. */ | |
2837 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
2838 | info, | |
2839 | input_section, | |
2840 | rel->r_offset); | |
2841 | if (outrel.r_offset == (bfd_vma) -1 | |
2842 | || outrel.r_offset == (bfd_vma) -2) | |
2843 | abort (); | |
2844 | ||
2845 | outrel.r_offset += (input_section->output_section->vma | |
2846 | + input_section->output_offset); | |
2847 | ||
2848 | if (h->dynindx == -1 | |
2849 | || h->forced_local | |
0e1862bb | 2850 | || bfd_link_executable (info)) |
470b557a AK |
2851 | { |
2852 | /* This symbol is resolved locally. */ | |
2853 | outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE); | |
2854 | outrel.r_addend = (h->root.u.def.value | |
2855 | + h->root.u.def.section->output_section->vma | |
2856 | + h->root.u.def.section->output_offset); | |
2857 | } | |
2858 | else | |
2859 | { | |
2860 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
2861 | outrel.r_addend = 0; | |
2862 | } | |
2863 | ||
2864 | sreloc = htab->elf.irelifunc; | |
2865 | elf_append_rela (output_bfd, sreloc, &outrel); | |
2866 | ||
2867 | /* If this reloc is against an external symbol, we | |
2868 | do not want to fiddle with the addend. Otherwise, | |
2869 | we need to include the symbol value so that it | |
2870 | becomes an addend for the dynamic reloc. For an | |
2871 | internal symbol, we have updated addend. */ | |
2872 | continue; | |
2873 | } | |
2874 | } | |
2875 | ||
b1e24c02 | 2876 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
2877 | break; |
2878 | ||
0e1862bb | 2879 | if ((bfd_link_pic (info) |
82058a73 MS |
2880 | && (h == NULL |
2881 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2882 | || h->root.type != bfd_link_hash_undefweak) | |
0451c93c | 2883 | && ((r_type != R_390_PC16 |
fb798c50 | 2884 | && r_type != R_390_PC12DBL |
0451c93c | 2885 | && r_type != R_390_PC16DBL |
fb798c50 | 2886 | && r_type != R_390_PC24DBL |
befc3abb | 2887 | && r_type != R_390_PC32DBL |
0451c93c | 2888 | && r_type != R_390_PC32) |
8c21ca21 | 2889 | || !SYMBOL_CALLS_LOCAL (info, h))) |
64285810 | 2890 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 2891 | && !bfd_link_pic (info) |
0451c93c MS |
2892 | && h != NULL |
2893 | && h->dynindx != -1 | |
f5385ebf AM |
2894 | && !h->non_got_ref |
2895 | && ((h->def_dynamic | |
2896 | && !h->def_regular) | |
0451c93c MS |
2897 | || h->root.type == bfd_link_hash_undefweak |
2898 | || h->root.type == bfd_link_hash_undefined))) | |
26e41594 AM |
2899 | { |
2900 | Elf_Internal_Rela outrel; | |
2901 | bfd_boolean skip, relocate; | |
0451c93c | 2902 | asection *sreloc; |
947216bf | 2903 | bfd_byte *loc; |
ec338859 | 2904 | |
0451c93c MS |
2905 | /* When generating a shared object, these relocations |
2906 | are copied into the output file to be resolved at run | |
2907 | time. */ | |
ec338859 | 2908 | |
26e41594 AM |
2909 | skip = FALSE; |
2910 | relocate = FALSE; | |
ec338859 | 2911 | |
c629eae0 JJ |
2912 | outrel.r_offset = |
2913 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2914 | rel->r_offset); | |
2915 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2916 | skip = TRUE; |
0bb2d96a | 2917 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2918 | skip = TRUE, relocate = TRUE; |
26e41594 AM |
2919 | outrel.r_offset += (input_section->output_section->vma |
2920 | + input_section->output_offset); | |
ec338859 | 2921 | |
26e41594 | 2922 | if (skip) |
0bb2d96a | 2923 | memset (&outrel, 0, sizeof outrel); |
26e41594 | 2924 | else if (h != NULL |
0451c93c MS |
2925 | && h->dynindx != -1 |
2926 | && (r_type == R_390_PC16 | |
fb798c50 | 2927 | || r_type == R_390_PC12DBL |
0451c93c | 2928 | || r_type == R_390_PC16DBL |
fb798c50 | 2929 | || r_type == R_390_PC24DBL |
befc3abb | 2930 | || r_type == R_390_PC32DBL |
0451c93c | 2931 | || r_type == R_390_PC32 |
0e1862bb | 2932 | || !bfd_link_pic (info) |
8c21ca21 | 2933 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 2934 | || !h->def_regular)) |
26e41594 AM |
2935 | { |
2936 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
27018c3f | 2937 | outrel.r_addend = rel->r_addend; |
26e41594 AM |
2938 | } |
2939 | else | |
2940 | { | |
0451c93c | 2941 | /* This symbol is local, or marked to become local. */ |
90ced0dd | 2942 | outrel.r_addend = relocation + rel->r_addend; |
b5727d75 MS |
2943 | if (r_type == R_390_32) |
2944 | { | |
2945 | relocate = TRUE; | |
2946 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
b5727d75 MS |
2947 | } |
2948 | else | |
2949 | { | |
2950 | long sindx; | |
2951 | ||
90ced0dd | 2952 | if (bfd_is_abs_section (sec)) |
b5727d75 MS |
2953 | sindx = 0; |
2954 | else if (sec == NULL || sec->owner == NULL) | |
2955 | { | |
2956 | bfd_set_error(bfd_error_bad_value); | |
2957 | return FALSE; | |
2958 | } | |
2959 | else | |
2960 | { | |
2961 | asection *osec; | |
2962 | ||
2963 | osec = sec->output_section; | |
2964 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
2965 | if (sindx == 0) |
2966 | { | |
2967 | osec = htab->elf.text_index_section; | |
2968 | sindx = elf_section_data (osec)->dynindx; | |
2969 | } | |
2970 | BFD_ASSERT (sindx != 0); | |
90ced0dd MS |
2971 | |
2972 | /* We are turning this relocation into one | |
2973 | against a section symbol, so subtract out | |
2974 | the output section's address but not the | |
2975 | offset of the input section in the output | |
2976 | section. */ | |
90ced0dd | 2977 | outrel.r_addend -= osec->vma; |
b5727d75 MS |
2978 | } |
2979 | outrel.r_info = ELF32_R_INFO (sindx, r_type); | |
b5727d75 | 2980 | } |
26e41594 | 2981 | } |
ec338859 | 2982 | |
0451c93c MS |
2983 | sreloc = elf_section_data (input_section)->sreloc; |
2984 | if (sreloc == NULL) | |
2985 | abort (); | |
ec338859 | 2986 | |
947216bf AM |
2987 | loc = sreloc->contents; |
2988 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 2989 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
ec338859 | 2990 | |
26e41594 AM |
2991 | /* If this reloc is against an external symbol, we do |
2992 | not want to fiddle with the addend. Otherwise, we | |
2993 | need to include the symbol value so that it becomes | |
2994 | an addend for the dynamic reloc. */ | |
2995 | if (! relocate) | |
2996 | continue; | |
2997 | } | |
0451c93c | 2998 | break; |
ec338859 | 2999 | |
69fc87f1 MS |
3000 | /* Relocations for tls literal pool entries. */ |
3001 | case R_390_TLS_IE32: | |
0e1862bb | 3002 | if (bfd_link_pic (info)) |
69fc87f1 MS |
3003 | { |
3004 | Elf_Internal_Rela outrel; | |
3005 | asection *sreloc; | |
3006 | bfd_byte *loc; | |
3007 | ||
3008 | outrel.r_offset = rel->r_offset | |
3009 | + input_section->output_section->vma | |
3010 | + input_section->output_offset; | |
3011 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
3012 | sreloc = elf_section_data (input_section)->sreloc; | |
3013 | if (sreloc == NULL) | |
3014 | abort (); | |
3015 | loc = sreloc->contents; | |
3016 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
3017 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
3018 | } | |
ae9a127f | 3019 | /* Fall through. */ |
69fc87f1 MS |
3020 | |
3021 | case R_390_TLS_GD32: | |
3022 | case R_390_TLS_GOTIE32: | |
3023 | r_type = elf_s390_tls_transition (info, r_type, h == NULL); | |
3024 | tls_type = GOT_UNKNOWN; | |
3025 | if (h == NULL && local_got_offsets) | |
3026 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
3027 | else if (h != NULL) | |
3028 | { | |
3029 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
0e1862bb L |
3030 | if (!bfd_link_pic (info) |
3031 | && h->dynindx == -1 | |
3032 | && tls_type >= GOT_TLS_IE) | |
69fc87f1 MS |
3033 | r_type = R_390_TLS_LE32; |
3034 | } | |
3035 | if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE) | |
3036 | r_type = R_390_TLS_IE32; | |
3037 | ||
3038 | if (r_type == R_390_TLS_LE32) | |
3039 | { | |
3040 | /* This relocation gets optimized away by the local exec | |
3041 | access optimization. */ | |
3042 | BFD_ASSERT (! unresolved_reloc); | |
3043 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
3044 | contents + rel->r_offset); | |
3045 | continue; | |
3046 | } | |
3047 | ||
f41345a7 | 3048 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
3049 | abort (); |
3050 | ||
3051 | if (h != NULL) | |
3052 | off = h->got.offset; | |
3053 | else | |
3054 | { | |
3055 | if (local_got_offsets == NULL) | |
3056 | abort (); | |
3057 | ||
3058 | off = local_got_offsets[r_symndx]; | |
3059 | } | |
3060 | ||
3061 | emit_tls_relocs: | |
3062 | ||
3063 | if ((off & 1) != 0) | |
3064 | off &= ~1; | |
26e41594 | 3065 | else |
69fc87f1 MS |
3066 | { |
3067 | Elf_Internal_Rela outrel; | |
3068 | bfd_byte *loc; | |
3069 | int dr_type, indx; | |
3070 | ||
f41345a7 | 3071 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
3072 | abort (); |
3073 | ||
f41345a7 AK |
3074 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3075 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
3076 | |
3077 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
3078 | if (r_type == R_390_TLS_GD32) | |
3079 | dr_type = R_390_TLS_DTPMOD; | |
3080 | else | |
3081 | dr_type = R_390_TLS_TPOFF; | |
3082 | if (dr_type == R_390_TLS_TPOFF && indx == 0) | |
3083 | outrel.r_addend = relocation - dtpoff_base (info); | |
3084 | else | |
3085 | outrel.r_addend = 0; | |
3086 | outrel.r_info = ELF32_R_INFO (indx, dr_type); | |
f41345a7 AK |
3087 | loc = htab->elf.srelgot->contents; |
3088 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
3089 | * sizeof (Elf32_External_Rela); |
3090 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
3091 | ||
3092 | if (r_type == R_390_TLS_GD32) | |
3093 | { | |
3094 | if (indx == 0) | |
3095 | { | |
26e41594 | 3096 | BFD_ASSERT (! unresolved_reloc); |
69fc87f1 MS |
3097 | bfd_put_32 (output_bfd, |
3098 | relocation - dtpoff_base (info), | |
f41345a7 | 3099 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
3100 | } |
3101 | else | |
3102 | { | |
3103 | outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF); | |
3104 | outrel.r_offset += GOT_ENTRY_SIZE; | |
3105 | outrel.r_addend = 0; | |
f41345a7 | 3106 | htab->elf.srelgot->reloc_count++; |
69fc87f1 MS |
3107 | loc += sizeof (Elf32_External_Rela); |
3108 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
3109 | } | |
3110 | } | |
3111 | ||
3112 | if (h != NULL) | |
3113 | h->got.offset |= 1; | |
3114 | else | |
3115 | local_got_offsets[r_symndx] |= 1; | |
3116 | } | |
3117 | ||
3118 | if (off >= (bfd_vma) -2) | |
3119 | abort (); | |
3120 | if (r_type == ELF32_R_TYPE (rel->r_info)) | |
3121 | { | |
f41345a7 | 3122 | relocation = htab->elf.sgot->output_offset + off; |
69fc87f1 | 3123 | if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT) |
f41345a7 | 3124 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
3125 | unresolved_reloc = FALSE; |
3126 | } | |
3127 | else | |
3128 | { | |
f41345a7 | 3129 | bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off, |
69fc87f1 MS |
3130 | contents + rel->r_offset); |
3131 | continue; | |
3132 | } | |
3133 | break; | |
3134 | ||
3135 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 3136 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
3137 | case R_390_TLS_IEENT: |
3138 | if (h == NULL) | |
3139 | { | |
3140 | if (local_got_offsets == NULL) | |
3141 | abort(); | |
3142 | off = local_got_offsets[r_symndx]; | |
0e1862bb | 3143 | if (bfd_link_pic (info)) |
69fc87f1 MS |
3144 | goto emit_tls_relocs; |
3145 | } | |
3146 | else | |
3147 | { | |
3148 | off = h->got.offset; | |
3149 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
0e1862bb L |
3150 | if (bfd_link_pic (info) |
3151 | || h->dynindx != -1 | |
3152 | || tls_type < GOT_TLS_IE) | |
69fc87f1 MS |
3153 | goto emit_tls_relocs; |
3154 | } | |
3155 | ||
f41345a7 | 3156 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
3157 | abort (); |
3158 | ||
3159 | BFD_ASSERT (! unresolved_reloc); | |
3160 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
f41345a7 AK |
3161 | htab->elf.sgot->contents + off); |
3162 | relocation = htab->elf.sgot->output_offset + off; | |
69fc87f1 | 3163 | if (r_type == R_390_TLS_IEENT) |
f41345a7 | 3164 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
3165 | unresolved_reloc = FALSE; |
3166 | break; | |
3167 | ||
3168 | case R_390_TLS_LDM32: | |
0e1862bb | 3169 | if (! bfd_link_pic (info)) |
69fc87f1 MS |
3170 | /* The literal pool entry this relocation refers to gets ignored |
3171 | by the optimized code of the local exec model. Do nothing | |
3172 | and the value will turn out zero. */ | |
3173 | continue; | |
3174 | ||
f41345a7 | 3175 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
3176 | abort (); |
3177 | ||
3178 | off = htab->tls_ldm_got.offset; | |
3179 | if (off & 1) | |
3180 | off &= ~1; | |
3181 | else | |
3182 | { | |
3183 | Elf_Internal_Rela outrel; | |
3184 | bfd_byte *loc; | |
3185 | ||
f41345a7 | 3186 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
3187 | abort (); |
3188 | ||
f41345a7 AK |
3189 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3190 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
3191 | |
3192 | bfd_put_32 (output_bfd, 0, | |
f41345a7 | 3193 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
3194 | outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD); |
3195 | outrel.r_addend = 0; | |
f41345a7 AK |
3196 | loc = htab->elf.srelgot->contents; |
3197 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
3198 | * sizeof (Elf32_External_Rela); |
3199 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
3200 | htab->tls_ldm_got.offset |= 1; | |
3201 | } | |
f41345a7 | 3202 | relocation = htab->elf.sgot->output_offset + off; |
26e41594 | 3203 | unresolved_reloc = FALSE; |
69fc87f1 MS |
3204 | break; |
3205 | ||
3206 | case R_390_TLS_LE32: | |
3cbc1e5e | 3207 | if (bfd_link_dll (info)) |
69fc87f1 MS |
3208 | { |
3209 | /* Linking a shared library with non-fpic code requires | |
3210 | a R_390_TLS_TPOFF relocation. */ | |
3211 | Elf_Internal_Rela outrel; | |
3212 | asection *sreloc; | |
3213 | bfd_byte *loc; | |
3214 | int indx; | |
3215 | ||
3216 | outrel.r_offset = rel->r_offset | |
3217 | + input_section->output_section->vma | |
3218 | + input_section->output_offset; | |
3219 | if (h != NULL && h->dynindx != -1) | |
3220 | indx = h->dynindx; | |
3221 | else | |
3222 | indx = 0; | |
3223 | outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF); | |
3224 | if (indx == 0) | |
3225 | outrel.r_addend = relocation - dtpoff_base (info); | |
3226 | else | |
3227 | outrel.r_addend = 0; | |
3228 | sreloc = elf_section_data (input_section)->sreloc; | |
3229 | if (sreloc == NULL) | |
3230 | abort (); | |
3231 | loc = sreloc->contents; | |
3232 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
3233 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
3234 | } | |
3235 | else | |
3236 | { | |
3237 | BFD_ASSERT (! unresolved_reloc); | |
3238 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
3239 | contents + rel->r_offset); | |
3240 | } | |
3241 | continue; | |
3242 | ||
3243 | case R_390_TLS_LDO32: | |
0e1862bb | 3244 | if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING)) |
69fc87f1 MS |
3245 | relocation -= dtpoff_base (info); |
3246 | else | |
3247 | /* When converting LDO to LE, we must negate. */ | |
3248 | relocation = -tpoff (info, relocation); | |
3249 | break; | |
3250 | ||
3251 | /* Relocations for tls instructions. */ | |
3252 | case R_390_TLS_LOAD: | |
3253 | case R_390_TLS_GDCALL: | |
3254 | case R_390_TLS_LDCALL: | |
3255 | tls_type = GOT_UNKNOWN; | |
3256 | if (h == NULL && local_got_offsets) | |
3257 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
3258 | else if (h != NULL) | |
3259 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
3260 | ||
3261 | if (tls_type == GOT_TLS_GD) | |
3262 | continue; | |
3263 | ||
3264 | if (r_type == R_390_TLS_LOAD) | |
3265 | { | |
0e1862bb | 3266 | if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) |
69fc87f1 MS |
3267 | { |
3268 | /* IE->LE transition. Four valid cases: | |
3269 | l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 | |
3270 | l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 | |
3271 | l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 | |
3272 | l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
3273 | unsigned int insn, ry; | |
3274 | ||
3275 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3276 | ry = 0; | |
3277 | if ((insn & 0xff00f000) == 0x58000000) | |
3278 | /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */ | |
3279 | ry = (insn & 0x000f0000); | |
3280 | else if ((insn & 0xff0f0000) == 0x58000000) | |
3281 | /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
3282 | ry = (insn & 0x0000f000) << 4; | |
3283 | else if ((insn & 0xff00f000) == 0x5800c000) | |
3284 | /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */ | |
3285 | ry = (insn & 0x000f0000); | |
3286 | else if ((insn & 0xff0f0000) == 0x580c0000) | |
3287 | /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
3288 | ry = (insn & 0x0000f000) << 4; | |
3289 | else | |
3290 | invalid_tls_insn (input_bfd, input_section, rel); | |
3291 | insn = 0x18000700 | (insn & 0x00f00000) | ry; | |
3292 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
3293 | } | |
3294 | } | |
3295 | else if (r_type == R_390_TLS_GDCALL) | |
3296 | { | |
3297 | unsigned int insn; | |
3298 | ||
3299 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
77df2968 | 3300 | if ((insn & 0xff000fff) != 0x4d000000 && |
d0ddfe27 AK |
3301 | (insn & 0xffff0000) != 0xc0e50000 && |
3302 | (insn & 0xff000000) != 0x0d000000) | |
69fc87f1 | 3303 | invalid_tls_insn (input_bfd, input_section, rel); |
0e1862bb | 3304 | if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) |
77df2968 | 3305 | { |
d0ddfe27 AK |
3306 | if ((insn & 0xff000000) == 0x0d000000) |
3307 | { | |
3308 | /* GD->LE transition. | |
3309 | basr rx, ry -> nopr r7 */ | |
3310 | insn = 0x07070000 | (insn & 0xffff); | |
3311 | } | |
3312 | else if ((insn & 0xff000000) == 0x4d000000) | |
77df2968 MS |
3313 | { |
3314 | /* GD->LE transition. | |
3315 | bas %r14,0(%rx,%r13) -> bc 0,0 */ | |
3316 | insn = 0x47000000; | |
3317 | } | |
3318 | else | |
3319 | { | |
3320 | /* GD->LE transition. | |
d0ddfe27 | 3321 | brasl %r14,_tls_get_offset@plt -> brcl 0,. */ |
77df2968 MS |
3322 | insn = 0xc0040000; |
3323 | bfd_put_16 (output_bfd, 0x0000, | |
3324 | contents + rel->r_offset + 4); | |
3325 | } | |
3326 | } | |
69fc87f1 | 3327 | else |
77df2968 | 3328 | { |
d0ddfe27 AK |
3329 | /* If basr is used in the pic case to invoke |
3330 | _tls_get_offset, something went wrong before. */ | |
3331 | if ((insn & 0xff000000) == 0x0d000000) | |
3332 | invalid_tls_insn (input_bfd, input_section, rel); | |
3333 | ||
77df2968 MS |
3334 | if ((insn & 0xff000000) == 0x4d000000) |
3335 | { | |
3336 | /* GD->IE transition. | |
3337 | bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */ | |
3338 | insn = 0x5822c000; | |
3339 | } | |
3340 | else | |
3341 | { | |
3342 | /* GD->IE transition. | |
3343 | brasl %r14,__tls_get_addr@plt -> | |
3344 | l %r2,0(%r2,%r12) ; bcr 0,0 */ | |
3345 | insn = 0x5822c000; | |
3346 | bfd_put_16 (output_bfd, 0x0700, | |
3347 | contents + rel->r_offset + 4); | |
3348 | } | |
3349 | } | |
69fc87f1 MS |
3350 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
3351 | } | |
3352 | else if (r_type == R_390_TLS_LDCALL) | |
3353 | { | |
0e1862bb | 3354 | if (!bfd_link_pic (info)) |
69fc87f1 MS |
3355 | { |
3356 | unsigned int insn; | |
3357 | ||
3358 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
77df2968 | 3359 | if ((insn & 0xff000fff) != 0x4d000000 && |
d0ddfe27 AK |
3360 | (insn & 0xffff0000) != 0xc0e50000 && |
3361 | (insn & 0xff000000) != 0x0d000000) | |
69fc87f1 | 3362 | invalid_tls_insn (input_bfd, input_section, rel); |
d0ddfe27 AK |
3363 | |
3364 | if ((insn & 0xff000000) == 0x0d000000) | |
3365 | { | |
3366 | /* LD->LE transition. | |
3367 | basr rx, ry -> nopr r7 */ | |
3368 | insn = 0x07070000 | (insn & 0xffff); | |
3369 | } | |
3370 | else if ((insn & 0xff000000) == 0x4d000000) | |
77df2968 MS |
3371 | { |
3372 | /* LD->LE transition. | |
3373 | bas %r14,0(%rx,%r13) -> bc 0,0 */ | |
3374 | insn = 0x47000000; | |
3375 | } | |
3376 | else | |
3377 | { | |
3378 | /* LD->LE transition. | |
d0ddfe27 | 3379 | brasl %r14,__tls_get_offset@plt -> brcl 0,. */ |
77df2968 MS |
3380 | insn = 0xc0040000; |
3381 | bfd_put_16 (output_bfd, 0x0000, | |
3382 | contents + rel->r_offset + 4); | |
3383 | } | |
69fc87f1 MS |
3384 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
3385 | } | |
3386 | } | |
3387 | continue; | |
3388 | ||
0451c93c MS |
3389 | default: |
3390 | break; | |
3391 | } | |
ec338859 | 3392 | |
239e1f3a AM |
3393 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3394 | because such sections are not SEC_ALLOC and thus ld.so will | |
3395 | not process them. */ | |
0451c93c | 3396 | if (unresolved_reloc |
239e1f3a | 3397 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
3398 | && h->def_dynamic) |
3399 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
3400 | rel->r_offset) != (bfd_vma) -1) | |
4eca0228 | 3401 | _bfd_error_handler |
695344c0 | 3402 | /* xgettext:c-format */ |
843fe662 | 3403 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
3404 | input_bfd, |
3405 | input_section, | |
0451c93c | 3406 | (long) rel->r_offset, |
843fe662 | 3407 | howto->name, |
0451c93c | 3408 | h->root.root.string); |
ec338859 | 3409 | |
470b557a AK |
3410 | do_relocation: |
3411 | ||
fb798c50 AK |
3412 | /* When applying a 24 bit reloc we need to start one byte |
3413 | earlier. Otherwise the 32 bit get/put bfd operations might | |
3414 | access a byte after the actual section. */ | |
3415 | if (r_type == R_390_PC24DBL | |
3416 | || r_type == R_390_PLT24DBL) | |
3417 | rel->r_offset--; | |
3418 | ||
bd1ea41b MS |
3419 | if (r_type == R_390_20 |
3420 | || r_type == R_390_GOT20 | |
3421 | || r_type == R_390_GOTPLT20 | |
3422 | || r_type == R_390_TLS_GOTIE20) | |
3423 | { | |
3424 | relocation += rel->r_addend; | |
3425 | relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12; | |
3426 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3427 | contents, rel->r_offset, | |
3428 | relocation, 0); | |
3429 | } | |
3430 | else | |
3431 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3432 | contents, rel->r_offset, | |
3433 | relocation, rel->r_addend); | |
ec338859 | 3434 | |
a85d7ed0 NC |
3435 | if (r != bfd_reloc_ok) |
3436 | { | |
0451c93c | 3437 | const char *name; |
ec338859 | 3438 | |
0451c93c MS |
3439 | if (h != NULL) |
3440 | name = h->root.root.string; | |
3441 | else | |
a85d7ed0 | 3442 | { |
0451c93c MS |
3443 | name = bfd_elf_string_from_elf_section (input_bfd, |
3444 | symtab_hdr->sh_link, | |
3445 | sym->st_name); | |
3446 | if (name == NULL) | |
b34976b6 | 3447 | return FALSE; |
0451c93c MS |
3448 | if (*name == '\0') |
3449 | name = bfd_section_name (input_bfd, sec); | |
3450 | } | |
ec338859 | 3451 | |
0451c93c | 3452 | if (r == bfd_reloc_overflow) |
1a72702b AM |
3453 | (*info->callbacks->reloc_overflow) |
3454 | (info, (h ? &h->root : NULL), name, howto->name, | |
3455 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
0451c93c MS |
3456 | else |
3457 | { | |
4eca0228 | 3458 | _bfd_error_handler |
695344c0 | 3459 | /* xgettext:c-format */ |
d003868e AM |
3460 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
3461 | input_bfd, input_section, | |
0451c93c | 3462 | (long) rel->r_offset, name, (int) r); |
b34976b6 | 3463 | return FALSE; |
a85d7ed0 NC |
3464 | } |
3465 | } | |
3466 | } | |
ec338859 | 3467 | |
b34976b6 | 3468 | return TRUE; |
a85d7ed0 NC |
3469 | } |
3470 | ||
470b557a AK |
3471 | /* Generate the PLT slots together with the dynamic relocations needed |
3472 | for IFUNC symbols. */ | |
3473 | ||
3474 | static void | |
3475 | elf_s390_finish_ifunc_symbol (bfd *output_bfd, | |
3476 | struct bfd_link_info *info, | |
3477 | struct elf_link_hash_entry *h, | |
3478 | struct elf_s390_link_hash_table *htab, | |
3479 | bfd_vma iplt_offset, | |
3480 | bfd_vma resolver_address) | |
3481 | { | |
3482 | bfd_vma iplt_index; | |
3483 | bfd_vma got_offset; | |
3484 | bfd_vma igotiplt_offset; | |
3485 | Elf_Internal_Rela rela; | |
3486 | bfd_byte *loc; | |
3487 | asection *plt, *gotplt, *relplt; | |
3488 | bfd_vma relative_offset; | |
3489 | ||
3490 | if (htab->elf.iplt == NULL | |
3491 | || htab->elf.igotplt == NULL | |
3492 | || htab->elf.irelplt == NULL) | |
3493 | abort (); | |
3494 | ||
3495 | gotplt = htab->elf.igotplt; | |
3496 | relplt = htab->elf.irelplt; | |
3497 | ||
3498 | /* Index of the PLT slot within iplt section. */ | |
3499 | iplt_index = iplt_offset / PLT_ENTRY_SIZE; | |
3500 | plt = htab->elf.iplt; | |
3501 | /* Offset into the igot.plt section. */ | |
3502 | igotiplt_offset = iplt_index * GOT_ENTRY_SIZE; | |
3503 | /* Offset into the got section. */ | |
3504 | got_offset = igotiplt_offset + gotplt->output_offset; | |
3505 | ||
3506 | /* S390 uses halfwords for relative branch calc! */ | |
3507 | relative_offset = - (plt->output_offset + | |
3508 | (PLT_ENTRY_SIZE * iplt_index) + 18) / 2; | |
ceada896 AA |
3509 | /* If offset is > 32768, branch to a previous branch |
3510 | 390 can only handle +-64 K jumps. */ | |
470b557a AK |
3511 | if ( -32768 > (int) relative_offset ) |
3512 | relative_offset | |
3513 | = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2); | |
3514 | ||
3515 | /* Fill in the entry in the procedure linkage table. */ | |
0e1862bb | 3516 | if (!bfd_link_pic (info)) |
470b557a AK |
3517 | { |
3518 | memcpy (plt->contents + iplt_offset, elf_s390_plt_entry, | |
3519 | PLT_ENTRY_SIZE); | |
3520 | ||
3521 | /* Adjust jump to the first plt entry. */ | |
3522 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3523 | plt->contents + iplt_offset + 20); | |
3524 | ||
3525 | /* Push the GOT offset field. */ | |
3526 | bfd_put_32 (output_bfd, | |
3527 | (gotplt->output_section->vma | |
3528 | + got_offset), | |
3529 | plt->contents + iplt_offset + 24); | |
3530 | } | |
3531 | else if (got_offset < 4096) | |
3532 | { | |
3533 | /* The GOT offset is small enough to be used directly as | |
3534 | displacement. */ | |
3535 | memcpy (plt->contents + iplt_offset, | |
3536 | elf_s390_plt_pic12_entry, | |
3537 | PLT_ENTRY_SIZE); | |
3538 | ||
3539 | /* Put in the GOT offset as displacement value. The 0xc000 | |
3540 | value comes from the first word of the plt entry. Look | |
3541 | at the elf_s390_plt_pic16_entry content. */ | |
3542 | bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset, | |
3543 | plt->contents + iplt_offset + 2); | |
3544 | ||
3545 | /* Adjust the jump to the first plt entry. */ | |
3546 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3547 | plt->contents + iplt_offset + 20); | |
3548 | } | |
3549 | else if (got_offset < 32768) | |
3550 | { | |
3551 | /* The GOT offset is too big for a displacement but small | |
3552 | enough to be a signed 16 bit immediate value as it can be | |
3553 | used in an lhi instruction. */ | |
3554 | memcpy (plt->contents + iplt_offset, | |
3555 | elf_s390_plt_pic16_entry, | |
3556 | PLT_ENTRY_SIZE); | |
3557 | ||
3558 | /* Put in the GOT offset for the lhi instruction. */ | |
3559 | bfd_put_16 (output_bfd, (bfd_vma)got_offset, | |
3560 | plt->contents + iplt_offset + 2); | |
3561 | ||
3562 | /* Adjust the jump to the first plt entry. */ | |
3563 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3564 | plt->contents + iplt_offset + 20); | |
3565 | } | |
3566 | else | |
3567 | { | |
3568 | memcpy (plt->contents + iplt_offset, | |
3569 | elf_s390_plt_pic_entry, | |
3570 | PLT_ENTRY_SIZE); | |
3571 | ||
3572 | /* Adjust the jump to the first plt entry. */ | |
3573 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3574 | plt->contents + iplt_offset + 20); | |
3575 | ||
3576 | /* Push the GOT offset field. */ | |
3577 | bfd_put_32 (output_bfd, got_offset, | |
3578 | plt->contents + iplt_offset + 24); | |
3579 | } | |
3580 | /* Insert offset into reloc. table here. */ | |
3581 | bfd_put_32 (output_bfd, relplt->output_offset + | |
3582 | iplt_index * RELA_ENTRY_SIZE, | |
3583 | plt->contents + iplt_offset + 28); | |
3584 | ||
3585 | /* Fill in the entry in the global offset table. | |
3586 | Points to instruction after GOT offset. */ | |
3587 | bfd_put_32 (output_bfd, | |
3588 | (plt->output_section->vma | |
3589 | + plt->output_offset | |
3590 | + iplt_offset | |
3591 | + 12), | |
3592 | gotplt->contents + igotiplt_offset); | |
3593 | ||
3594 | /* Fill in the entry in the .rela.plt section. */ | |
3595 | rela.r_offset = gotplt->output_section->vma + got_offset; | |
3596 | ||
3597 | if (!h | |
3598 | || h->dynindx == -1 | |
0e1862bb | 3599 | || ((bfd_link_executable (info) |
470b557a AK |
3600 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
3601 | && h->def_regular)) | |
3602 | { | |
3603 | /* The symbol can be locally resolved. */ | |
3604 | rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE); | |
3605 | rela.r_addend = resolver_address; | |
3606 | } | |
3607 | else | |
3608 | { | |
3609 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3610 | rela.r_addend = 0; | |
3611 | } | |
3612 | ||
3613 | loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE; | |
3614 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
3615 | } | |
3616 | ||
a85d7ed0 NC |
3617 | /* Finish up dynamic symbol handling. We set the contents of various |
3618 | dynamic sections here. */ | |
3619 | ||
b34976b6 | 3620 | static bfd_boolean |
2c3fc389 NC |
3621 | elf_s390_finish_dynamic_symbol (bfd *output_bfd, |
3622 | struct bfd_link_info *info, | |
3623 | struct elf_link_hash_entry *h, | |
3624 | Elf_Internal_Sym *sym) | |
a85d7ed0 | 3625 | { |
0451c93c | 3626 | struct elf_s390_link_hash_table *htab; |
470b557a | 3627 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h; |
ec338859 | 3628 | |
0451c93c | 3629 | htab = elf_s390_hash_table (info); |
ec338859 | 3630 | |
a85d7ed0 NC |
3631 | if (h->plt.offset != (bfd_vma) -1) |
3632 | { | |
0451c93c MS |
3633 | bfd_vma plt_index; |
3634 | bfd_vma got_offset; | |
a85d7ed0 | 3635 | Elf_Internal_Rela rela; |
947216bf | 3636 | bfd_byte *loc; |
a85d7ed0 | 3637 | bfd_vma relative_offset; |
ec338859 | 3638 | |
a85d7ed0 | 3639 | /* This symbol has an entry in the procedure linkage table. Set |
26e41594 | 3640 | it up. */ |
0a511368 | 3641 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) |
0451c93c | 3642 | { |
0a511368 AK |
3643 | elf_s390_finish_ifunc_symbol (output_bfd, info, h, |
3644 | htab, h->plt.offset, | |
3645 | eh->ifunc_resolver_address + | |
3646 | eh->ifunc_resolver_section->output_offset + | |
3647 | eh->ifunc_resolver_section->output_section->vma); | |
3648 | /* Do not return yet. Handling of explicit GOT slots of | |
3649 | IFUNC symbols is below. */ | |
0451c93c | 3650 | } |
a85d7ed0 | 3651 | else |
0451c93c | 3652 | { |
470b557a AK |
3653 | if (h->dynindx == -1 |
3654 | || htab->elf.splt == NULL | |
3655 | || htab->elf.sgotplt == NULL | |
3656 | || htab->elf.srelplt == NULL) | |
3657 | abort (); | |
9aa17453 | 3658 | |
470b557a AK |
3659 | /* Calc. index no. |
3660 | Current offset - size first entry / entry size. */ | |
3661 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
9aa17453 | 3662 | |
470b557a AK |
3663 | /* Offset in GOT is PLT index plus GOT headers(3) times 4, |
3664 | addr & GOT addr. */ | |
3665 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
a85d7ed0 | 3666 | |
470b557a AK |
3667 | /* S390 uses halfwords for relative branch calc! */ |
3668 | relative_offset = - ((PLT_FIRST_ENTRY_SIZE + | |
3669 | (PLT_ENTRY_SIZE * plt_index) + 18) / 2); | |
3670 | /* If offset is > 32768, branch to a previous branch | |
3671 | 390 can only handle +-64 K jumps. */ | |
3672 | if ( -32768 > (int) relative_offset ) | |
3673 | relative_offset | |
3674 | = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2); | |
ec338859 | 3675 | |
470b557a | 3676 | /* Fill in the entry in the procedure linkage table. */ |
0e1862bb | 3677 | if (!bfd_link_pic (info)) |
470b557a AK |
3678 | { |
3679 | memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry, | |
3680 | PLT_ENTRY_SIZE); | |
3681 | ||
3682 | /* Adjust jump to the first plt entry. */ | |
3683 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3684 | htab->elf.splt->contents + h->plt.offset + 20); | |
3685 | ||
3686 | /* Push the GOT offset field. */ | |
3687 | bfd_put_32 (output_bfd, | |
3688 | (htab->elf.sgotplt->output_section->vma | |
3689 | + htab->elf.sgotplt->output_offset | |
3690 | + got_offset), | |
3691 | htab->elf.splt->contents + h->plt.offset + 24); | |
3692 | } | |
3693 | else if (got_offset < 4096) | |
3694 | { | |
3695 | /* The GOT offset is small enough to be used directly as | |
3696 | displacement. */ | |
3697 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3698 | elf_s390_plt_pic12_entry, | |
3699 | PLT_ENTRY_SIZE); | |
3700 | ||
3701 | /* Put in the GOT offset as displacement value. The 0xc000 | |
3702 | value comes from the first word of the plt entry. Look | |
3b67f094 | 3703 | at the elf_s390_plt_pic12_entry content. */ |
470b557a AK |
3704 | bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset, |
3705 | htab->elf.splt->contents + h->plt.offset + 2); | |
3706 | ||
3707 | /* Adjust the jump to the first plt entry. */ | |
3708 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3709 | htab->elf.splt->contents + h->plt.offset + 20); | |
3710 | } | |
3711 | else if (got_offset < 32768) | |
3712 | { | |
3713 | /* The GOT offset is too big for a displacement but small | |
3714 | enough to be a signed 16 bit immediate value as it can be | |
3715 | used in an lhi instruction. */ | |
3716 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3717 | elf_s390_plt_pic16_entry, | |
3718 | PLT_ENTRY_SIZE); | |
3719 | ||
3720 | /* Put in the GOT offset for the lhi instruction. */ | |
3721 | bfd_put_16 (output_bfd, (bfd_vma)got_offset, | |
3722 | htab->elf.splt->contents + h->plt.offset + 2); | |
3723 | ||
3724 | /* Adjust the jump to the first plt entry. */ | |
3725 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3726 | htab->elf.splt->contents + h->plt.offset + 20); | |
3727 | } | |
3728 | else | |
3729 | { | |
3730 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3731 | elf_s390_plt_pic_entry, | |
3732 | PLT_ENTRY_SIZE); | |
3733 | ||
3734 | /* Adjust the jump to the first plt entry. */ | |
3735 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3736 | htab->elf.splt->contents + h->plt.offset + 20); | |
3737 | ||
3738 | /* Push the GOT offset field. */ | |
3739 | bfd_put_32 (output_bfd, got_offset, | |
3740 | htab->elf.splt->contents + h->plt.offset + 24); | |
3741 | } | |
3742 | /* Insert offset into reloc. table here. */ | |
3743 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
3744 | htab->elf.splt->contents + h->plt.offset + 28); | |
3745 | ||
3746 | /* Fill in the entry in the global offset table. | |
3747 | Points to instruction after GOT offset. */ | |
3748 | bfd_put_32 (output_bfd, | |
3749 | (htab->elf.splt->output_section->vma | |
3750 | + htab->elf.splt->output_offset | |
3751 | + h->plt.offset | |
3752 | + 12), | |
3753 | htab->elf.sgotplt->contents + got_offset); | |
3754 | ||
3755 | /* Fill in the entry in the .rela.plt section. */ | |
3756 | rela.r_offset = (htab->elf.sgotplt->output_section->vma | |
3757 | + htab->elf.sgotplt->output_offset | |
3758 | + got_offset); | |
3759 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3760 | rela.r_addend = 0; | |
3761 | loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela); | |
3762 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
3763 | ||
3764 | if (!h->def_regular) | |
3765 | { | |
3766 | /* Mark the symbol as undefined, rather than as defined in | |
3767 | the .plt section. Leave the value alone. This is a clue | |
3768 | for the dynamic linker, to make function pointer | |
3769 | comparisons work between an application and shared | |
3770 | library. */ | |
3771 | sym->st_shndx = SHN_UNDEF; | |
3772 | } | |
a85d7ed0 NC |
3773 | } |
3774 | } | |
ec338859 | 3775 | |
69fc87f1 MS |
3776 | if (h->got.offset != (bfd_vma) -1 |
3777 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD | |
3778 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE | |
3779 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT) | |
a85d7ed0 | 3780 | { |
a85d7ed0 | 3781 | Elf_Internal_Rela rela; |
947216bf | 3782 | bfd_byte *loc; |
a85d7ed0 NC |
3783 | |
3784 | /* This symbol has an entry in the global offset table. Set it | |
26e41594 | 3785 | up. */ |
a85d7ed0 | 3786 | |
f41345a7 | 3787 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
0451c93c | 3788 | abort (); |
a85d7ed0 | 3789 | |
f41345a7 AK |
3790 | rela.r_offset = (htab->elf.sgot->output_section->vma |
3791 | + htab->elf.sgot->output_offset | |
dc810e39 | 3792 | + (h->got.offset &~ (bfd_vma) 1)); |
a85d7ed0 NC |
3793 | |
3794 | /* If this is a static link, or it is a -Bsymbolic link and the | |
3795 | symbol is defined locally or was forced to be local because | |
3796 | of a version file, we just want to emit a RELATIVE reloc. | |
3797 | The entry in the global offset table will already have been | |
3798 | initialized in the relocate_section function. */ | |
470b557a AK |
3799 | if (h->def_regular && s390_is_ifunc_symbol_p (h)) |
3800 | { | |
0e1862bb | 3801 | if (bfd_link_pic (info)) |
470b557a AK |
3802 | { |
3803 | /* An explicit GOT slot usage needs GLOB_DAT. If the | |
3804 | symbol references local the implicit got.iplt slot | |
3805 | will be used and the IRELATIVE reloc has been created | |
3806 | above. */ | |
3807 | goto do_glob_dat; | |
3808 | } | |
3809 | else | |
3810 | { | |
3811 | /* For non-shared objects explicit GOT slots must be | |
3812 | filled with the PLT slot address for pointer | |
3813 | equality reasons. */ | |
3814 | bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma | |
3815 | + htab->elf.iplt->output_offset | |
3816 | + h->plt.offset), | |
3817 | htab->elf.sgot->contents + h->got.offset); | |
3818 | return TRUE; | |
3819 | } | |
3820 | } | |
0e1862bb | 3821 | else if (bfd_link_pic (info) |
ceada896 | 3822 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
0451c93c | 3823 | { |
470b557a AK |
3824 | /* If this is a static link, or it is a -Bsymbolic link and |
3825 | the symbol is defined locally or was forced to be local | |
3826 | because of a version file, we just want to emit a | |
3827 | RELATIVE reloc. The entry in the global offset table | |
3828 | will already have been initialized in the | |
3829 | relocate_section function. */ | |
8c21ca21 AK |
3830 | if (!h->def_regular) |
3831 | return FALSE; | |
0451c93c MS |
3832 | BFD_ASSERT((h->got.offset & 1) != 0); |
3833 | rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
3834 | rela.r_addend = (h->root.u.def.value | |
26e41594 AM |
3835 | + h->root.u.def.section->output_section->vma |
3836 | + h->root.u.def.section->output_offset); | |
3837 | } | |
a85d7ed0 NC |
3838 | else |
3839 | { | |
3840 | BFD_ASSERT((h->got.offset & 1) == 0); | |
470b557a | 3841 | do_glob_dat: |
f41345a7 | 3842 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset); |
a85d7ed0 | 3843 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT); |
26e41594 AM |
3844 | rela.r_addend = 0; |
3845 | } | |
a85d7ed0 | 3846 | |
f41345a7 AK |
3847 | loc = htab->elf.srelgot->contents; |
3848 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 3849 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3850 | } |
3851 | ||
f5385ebf | 3852 | if (h->needs_copy) |
a85d7ed0 | 3853 | { |
a85d7ed0 | 3854 | Elf_Internal_Rela rela; |
947216bf | 3855 | bfd_byte *loc; |
a85d7ed0 NC |
3856 | |
3857 | /* This symbols needs a copy reloc. Set it up. */ | |
3858 | ||
0451c93c MS |
3859 | if (h->dynindx == -1 |
3860 | || (h->root.type != bfd_link_hash_defined | |
3861 | && h->root.type != bfd_link_hash_defweak) | |
3862 | || htab->srelbss == NULL) | |
3863 | abort (); | |
a85d7ed0 NC |
3864 | |
3865 | rela.r_offset = (h->root.u.def.value | |
3866 | + h->root.u.def.section->output_section->vma | |
3867 | + h->root.u.def.section->output_offset); | |
3868 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY); | |
3869 | rela.r_addend = 0; | |
947216bf AM |
3870 | loc = htab->srelbss->contents; |
3871 | loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 3872 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3873 | } |
3874 | ||
3875 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 3876 | if (h == htab->elf.hdynamic |
22edb2f1 RS |
3877 | || h == htab->elf.hgot |
3878 | || h == htab->elf.hplt) | |
a85d7ed0 NC |
3879 | sym->st_shndx = SHN_ABS; |
3880 | ||
b34976b6 | 3881 | return TRUE; |
a85d7ed0 NC |
3882 | } |
3883 | ||
0451c93c MS |
3884 | /* Used to decide how to sort relocs in an optimal manner for the |
3885 | dynamic linker, before writing them out. */ | |
3886 | ||
3887 | static enum elf_reloc_type_class | |
7e612e98 AM |
3888 | elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
3889 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
3890 | const Elf_Internal_Rela *rela) | |
0451c93c | 3891 | { |
0f042c67 AK |
3892 | bfd *abfd = info->output_bfd; |
3893 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3894 | struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info); | |
3895 | unsigned long r_symndx = ELF32_R_SYM (rela->r_info); | |
3896 | Elf_Internal_Sym sym; | |
3897 | ||
3898 | if (htab->elf.dynsym == NULL | |
3899 | || !bed->s->swap_symbol_in (abfd, | |
3900 | (htab->elf.dynsym->contents | |
3901 | + r_symndx * bed->s->sizeof_sym), | |
3902 | 0, &sym)) | |
3903 | abort (); | |
3904 | ||
3905 | /* Check relocation against STT_GNU_IFUNC symbol. */ | |
3906 | if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
3907 | return reloc_class_ifunc; | |
3908 | ||
0451c93c MS |
3909 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
3910 | { | |
3911 | case R_390_RELATIVE: | |
3912 | return reloc_class_relative; | |
3913 | case R_390_JMP_SLOT: | |
3914 | return reloc_class_plt; | |
3915 | case R_390_COPY: | |
3916 | return reloc_class_copy; | |
3917 | default: | |
3918 | return reloc_class_normal; | |
3919 | } | |
3920 | } | |
3921 | ||
a85d7ed0 NC |
3922 | /* Finish up the dynamic sections. */ |
3923 | ||
b34976b6 | 3924 | static bfd_boolean |
2c3fc389 NC |
3925 | elf_s390_finish_dynamic_sections (bfd *output_bfd, |
3926 | struct bfd_link_info *info) | |
a85d7ed0 | 3927 | { |
0451c93c | 3928 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
3929 | bfd *dynobj; |
3930 | asection *sdyn; | |
470b557a AK |
3931 | bfd *ibfd; |
3932 | unsigned int i; | |
a85d7ed0 | 3933 | |
0451c93c MS |
3934 | htab = elf_s390_hash_table (info); |
3935 | dynobj = htab->elf.dynobj; | |
3d4d4302 | 3936 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
a85d7ed0 | 3937 | |
0451c93c | 3938 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 | 3939 | { |
a85d7ed0 NC |
3940 | Elf32_External_Dyn *dyncon, *dynconend; |
3941 | ||
f41345a7 | 3942 | if (sdyn == NULL || htab->elf.sgot == NULL) |
0451c93c | 3943 | abort (); |
a85d7ed0 NC |
3944 | |
3945 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 3946 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
a85d7ed0 NC |
3947 | for (; dyncon < dynconend; dyncon++) |
3948 | { | |
3949 | Elf_Internal_Dyn dyn; | |
a85d7ed0 | 3950 | asection *s; |
ec338859 | 3951 | |
a85d7ed0 | 3952 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
ec338859 | 3953 | |
a85d7ed0 NC |
3954 | switch (dyn.d_tag) |
3955 | { | |
3956 | default: | |
0451c93c | 3957 | continue; |
ec338859 | 3958 | |
a85d7ed0 | 3959 | case DT_PLTGOT: |
4ade44b7 AM |
3960 | s = htab->elf.sgotplt; |
3961 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
0451c93c | 3962 | break; |
ec338859 | 3963 | |
a85d7ed0 | 3964 | case DT_JMPREL: |
4ade44b7 AM |
3965 | s = htab->elf.srelplt; |
3966 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
a85d7ed0 NC |
3967 | break; |
3968 | ||
3969 | case DT_PLTRELSZ: | |
f92339b8 | 3970 | dyn.d_un.d_val = htab->elf.srelplt->size + htab->elf.irelplt->size; |
a85d7ed0 NC |
3971 | break; |
3972 | } | |
0451c93c MS |
3973 | |
3974 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
a85d7ed0 NC |
3975 | } |
3976 | ||
3977 | /* Fill in the special first entry in the procedure linkage table. */ | |
f41345a7 | 3978 | if (htab->elf.splt && htab->elf.splt->size > 0) |
a85d7ed0 | 3979 | { |
f41345a7 | 3980 | memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE); |
0e1862bb | 3981 | if (bfd_link_pic (info)) |
0451c93c | 3982 | { |
f41345a7 | 3983 | memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry, |
9aa17453 AK |
3984 | PLT_FIRST_ENTRY_SIZE); |
3985 | } | |
26e41594 | 3986 | else |
9aa17453 | 3987 | { |
f41345a7 | 3988 | memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry, |
9aa17453 | 3989 | PLT_FIRST_ENTRY_SIZE); |
26e41594 | 3990 | bfd_put_32 (output_bfd, |
f41345a7 AK |
3991 | htab->elf.sgotplt->output_section->vma |
3992 | + htab->elf.sgotplt->output_offset, | |
3993 | htab->elf.splt->contents + 24); | |
ceada896 | 3994 | } |
f41345a7 | 3995 | elf_section_data (htab->elf.splt->output_section) |
0451c93c | 3996 | ->this_hdr.sh_entsize = 4; |
a85d7ed0 NC |
3997 | } |
3998 | ||
3999 | } | |
4000 | ||
f41345a7 | 4001 | if (htab->elf.sgotplt) |
a85d7ed0 | 4002 | { |
0451c93c | 4003 | /* Fill in the first three entries in the global offset table. */ |
f41345a7 | 4004 | if (htab->elf.sgotplt->size > 0) |
0451c93c MS |
4005 | { |
4006 | bfd_put_32 (output_bfd, | |
4007 | (sdyn == NULL ? (bfd_vma) 0 | |
4008 | : sdyn->output_section->vma + sdyn->output_offset), | |
f41345a7 | 4009 | htab->elf.sgotplt->contents); |
0451c93c | 4010 | /* One entry for shared object struct ptr. */ |
f41345a7 | 4011 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4); |
0451c93c | 4012 | /* One entry for _dl_runtime_resolve. */ |
f41345a7 | 4013 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8); |
0451c93c | 4014 | } |
a85d7ed0 | 4015 | |
f41345a7 | 4016 | elf_section_data (htab->elf.sgotplt->output_section) |
0451c93c MS |
4017 | ->this_hdr.sh_entsize = 4; |
4018 | } | |
470b557a | 4019 | /* Finish dynamic symbol for local IFUNC symbols. */ |
c72f2fb2 | 4020 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
470b557a AK |
4021 | { |
4022 | struct plt_entry *local_plt; | |
4023 | Elf_Internal_Sym *isym; | |
4024 | Elf_Internal_Shdr *symtab_hdr; | |
4025 | ||
4026 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
4027 | ||
4028 | local_plt = elf_s390_local_plt (ibfd); | |
4029 | if (local_plt != NULL) | |
4030 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
4031 | { | |
4032 | if (local_plt[i].plt.offset != (bfd_vma) -1) | |
4033 | { | |
4034 | asection *sec = local_plt[i].sec; | |
4035 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i); | |
4036 | if (isym == NULL) | |
4037 | return FALSE; | |
4038 | ||
4039 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
4040 | elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab, | |
4041 | local_plt[i].plt.offset, | |
4042 | isym->st_value | |
4043 | + sec->output_section->vma | |
4044 | + sec->output_offset); | |
4045 | ||
4046 | } | |
4047 | } | |
4048 | } | |
b34976b6 | 4049 | return TRUE; |
a85d7ed0 | 4050 | } |
e3e9290d AA |
4051 | \f |
4052 | /* Support for core dump NOTE sections. */ | |
a85d7ed0 | 4053 | |
b34976b6 | 4054 | static bfd_boolean |
2c3fc389 | 4055 | elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note) |
979f4a38 NC |
4056 | { |
4057 | int offset; | |
eea6121a | 4058 | unsigned int size; |
979f4a38 NC |
4059 | |
4060 | switch (note->descsz) | |
4061 | { | |
ceada896 AA |
4062 | default: |
4063 | return FALSE; | |
979f4a38 | 4064 | |
ceada896 AA |
4065 | case 224: /* S/390 Linux. */ |
4066 | /* pr_cursig */ | |
4067 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
979f4a38 | 4068 | |
ceada896 AA |
4069 | /* pr_pid */ |
4070 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); | |
979f4a38 | 4071 | |
ceada896 AA |
4072 | /* pr_reg */ |
4073 | offset = 72; | |
4074 | size = 144; | |
4075 | break; | |
979f4a38 NC |
4076 | } |
4077 | ||
4078 | /* Make a ".reg/999" section. */ | |
4079 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 4080 | size, note->descpos + offset); |
979f4a38 NC |
4081 | } |
4082 | ||
e3e9290d AA |
4083 | static bfd_boolean |
4084 | elf_s390_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
4085 | { | |
4086 | switch (note->descsz) | |
4087 | { | |
4088 | default: | |
4089 | return FALSE; | |
4090 | ||
4091 | case 124: /* sizeof(struct elf_prpsinfo) on s390 */ | |
4092 | elf_tdata (abfd)->core->pid | |
4093 | = bfd_get_32 (abfd, note->descdata + 12); | |
4094 | elf_tdata (abfd)->core->program | |
4095 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
4096 | elf_tdata (abfd)->core->command | |
4097 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
4098 | break; | |
4099 | } | |
4100 | ||
4101 | /* Note that for some reason, a spurious space is tacked | |
4102 | onto the end of the args in some (at least one anyway) | |
4103 | implementations, so strip it off if it exists. */ | |
4104 | ||
4105 | { | |
4106 | char *command = elf_tdata (abfd)->core->command; | |
4107 | int n = strlen (command); | |
4108 | ||
4109 | if (0 < n && command[n - 1] == ' ') | |
4110 | command[n - 1] = '\0'; | |
4111 | } | |
4112 | ||
4113 | return TRUE; | |
4114 | } | |
4115 | ||
4116 | static char * | |
4117 | elf_s390_write_core_note (bfd *abfd, char *buf, int *bufsiz, | |
4118 | int note_type, ...) | |
4119 | { | |
4120 | va_list ap; | |
4121 | ||
4122 | switch (note_type) | |
4123 | { | |
4124 | default: | |
4125 | return NULL; | |
4126 | ||
4127 | case NT_PRPSINFO: | |
4128 | { | |
4129 | char data[124] = { 0 }; | |
4130 | const char *fname, *psargs; | |
4131 | ||
4132 | va_start (ap, note_type); | |
4133 | fname = va_arg (ap, const char *); | |
4134 | psargs = va_arg (ap, const char *); | |
4135 | va_end (ap); | |
4136 | ||
4137 | strncpy (data + 28, fname, 16); | |
4138 | strncpy (data + 44, psargs, 80); | |
4139 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, | |
4140 | &data, sizeof (data)); | |
4141 | } | |
4142 | ||
4143 | case NT_PRSTATUS: | |
4144 | { | |
4145 | char data[224] = { 0 }; | |
4146 | long pid; | |
4147 | int cursig; | |
4148 | const void *gregs; | |
4149 | ||
4150 | va_start (ap, note_type); | |
4151 | pid = va_arg (ap, long); | |
4152 | cursig = va_arg (ap, int); | |
4153 | gregs = va_arg (ap, const void *); | |
4154 | va_end (ap); | |
4155 | ||
4156 | bfd_put_16 (abfd, cursig, data + 12); | |
4157 | bfd_put_32 (abfd, pid, data + 24); | |
4158 | memcpy (data + 72, gregs, 144); | |
4159 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type, | |
4160 | &data, sizeof (data)); | |
4161 | } | |
4162 | } | |
4163 | /* NOTREACHED */ | |
4164 | } | |
4165 | \f | |
4c45e5c9 JJ |
4166 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
4167 | or (bfd_vma) -1 if it should not be included. */ | |
4168 | ||
4169 | static bfd_vma | |
4170 | elf_s390_plt_sym_val (bfd_vma i, const asection *plt, | |
4171 | const arelent *rel ATTRIBUTE_UNUSED) | |
4172 | { | |
4173 | return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE; | |
4174 | } | |
4175 | ||
643f7afb AK |
4176 | /* Merge backend specific data from an object file to the output |
4177 | object file when linking. */ | |
4178 | ||
55786da2 | 4179 | static bfd_boolean |
50e03d47 | 4180 | elf32_s390_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
55786da2 | 4181 | { |
50e03d47 AM |
4182 | bfd *obfd = info->output_bfd; |
4183 | ||
643f7afb AK |
4184 | if (!is_s390_elf (ibfd) || !is_s390_elf (obfd)) |
4185 | return TRUE; | |
4186 | ||
50e03d47 | 4187 | if (!elf_s390_merge_obj_attributes (ibfd, info)) |
643f7afb AK |
4188 | return FALSE; |
4189 | ||
55786da2 AK |
4190 | elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags; |
4191 | return TRUE; | |
4192 | } | |
4193 | ||
4c45e5c9 | 4194 | |
6d00b590 | 4195 | #define TARGET_BIG_SYM s390_elf32_vec |
a85d7ed0 NC |
4196 | #define TARGET_BIG_NAME "elf32-s390" |
4197 | #define ELF_ARCH bfd_arch_s390 | |
ae95ffa6 | 4198 | #define ELF_TARGET_ID S390_ELF_DATA |
a85d7ed0 NC |
4199 | #define ELF_MACHINE_CODE EM_S390 |
4200 | #define ELF_MACHINE_ALT1 EM_S390_OLD | |
4201 | #define ELF_MAXPAGESIZE 0x1000 | |
4202 | ||
4203 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4204 | #define elf_backend_can_refcount 1 |
a85d7ed0 NC |
4205 | #define elf_backend_want_got_plt 1 |
4206 | #define elf_backend_plt_readonly 1 | |
4207 | #define elf_backend_want_plt_sym 0 | |
4208 | #define elf_backend_got_header_size 12 | |
b491616a | 4209 | #define elf_backend_rela_normal 1 |
a85d7ed0 | 4210 | |
26e41594 | 4211 | #define elf_info_to_howto elf_s390_info_to_howto |
a85d7ed0 | 4212 | |
a85d7ed0 NC |
4213 | #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name |
4214 | #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create | |
4215 | #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup | |
157090f7 | 4216 | #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup |
a85d7ed0 | 4217 | |
55786da2 AK |
4218 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data |
4219 | ||
a85d7ed0 | 4220 | #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol |
26e41594 | 4221 | #define elf_backend_check_relocs elf_s390_check_relocs |
0451c93c MS |
4222 | #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol |
4223 | #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections | |
a85d7ed0 NC |
4224 | #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections |
4225 | #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol | |
26e41594 AM |
4226 | #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook |
4227 | #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook | |
0451c93c | 4228 | #define elf_backend_reloc_type_class elf_s390_reloc_type_class |
26e41594 | 4229 | #define elf_backend_relocate_section elf_s390_relocate_section |
a85d7ed0 | 4230 | #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections |
74541ad4 | 4231 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
979f4a38 | 4232 | #define elf_backend_grok_prstatus elf_s390_grok_prstatus |
e3e9290d AA |
4233 | #define elf_backend_grok_psinfo elf_s390_grok_psinfo |
4234 | #define elf_backend_write_core_note elf_s390_write_core_note | |
4c45e5c9 | 4235 | #define elf_backend_plt_sym_val elf_s390_plt_sym_val |
470b557a | 4236 | #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook |
b9005ba7 | 4237 | #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p |
a85d7ed0 | 4238 | |
69fc87f1 | 4239 | #define bfd_elf32_mkobject elf_s390_mkobject |
26e41594 | 4240 | #define elf_backend_object_p elf_s390_object_p |
a85d7ed0 NC |
4241 | |
4242 | #include "elf32-target.h" |