Commit | Line | Data |
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a85d7ed0 | 1 | /* IBM S/390-specific support for 32-bit ELF |
7686d77d | 2 | Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, |
1d7e9d18 | 3 | 2011, 2012 Free Software Foundation, Inc. |
a85d7ed0 NC |
4 | Contributed by Carl B. Pedersen and Martin Schwidefsky. |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 10 | the Free Software Foundation; either version 3 of the License, or |
a85d7ed0 NC |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
3e110533 | 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
53e09e0a | 21 | 02110-1301, USA. */ |
a85d7ed0 | 22 | |
a85d7ed0 | 23 | #include "sysdep.h" |
3db64b00 | 24 | #include "bfd.h" |
a85d7ed0 NC |
25 | #include "bfdlink.h" |
26 | #include "libbfd.h" | |
27 | #include "elf-bfd.h" | |
a85d7ed0 NC |
28 | #include "elf/s390.h" |
29 | ||
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 */ | |
43 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
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), | |
a85d7ed0 NC |
164 | }; |
165 | ||
166 | /* GNU extension to record C++ vtable hierarchy. */ | |
167 | static reloc_howto_type elf32_s390_vtinherit_howto = | |
b34976b6 | 168 | HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE); |
a85d7ed0 | 169 | static reloc_howto_type elf32_s390_vtentry_howto = |
b34976b6 | 170 | 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 |
171 | |
172 | static reloc_howto_type * | |
2c3fc389 NC |
173 | elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
174 | bfd_reloc_code_real_type code) | |
a85d7ed0 | 175 | { |
ec338859 | 176 | switch (code) |
0451c93c MS |
177 | { |
178 | case BFD_RELOC_NONE: | |
179 | return &elf_howto_table[(int) R_390_NONE]; | |
180 | case BFD_RELOC_8: | |
181 | return &elf_howto_table[(int) R_390_8]; | |
182 | case BFD_RELOC_390_12: | |
183 | return &elf_howto_table[(int) R_390_12]; | |
184 | case BFD_RELOC_16: | |
185 | return &elf_howto_table[(int) R_390_16]; | |
186 | case BFD_RELOC_32: | |
187 | return &elf_howto_table[(int) R_390_32]; | |
188 | case BFD_RELOC_CTOR: | |
189 | return &elf_howto_table[(int) R_390_32]; | |
190 | case BFD_RELOC_32_PCREL: | |
191 | return &elf_howto_table[(int) R_390_PC32]; | |
192 | case BFD_RELOC_390_GOT12: | |
193 | return &elf_howto_table[(int) R_390_GOT12]; | |
194 | case BFD_RELOC_32_GOT_PCREL: | |
195 | return &elf_howto_table[(int) R_390_GOT32]; | |
196 | case BFD_RELOC_390_PLT32: | |
197 | return &elf_howto_table[(int) R_390_PLT32]; | |
198 | case BFD_RELOC_390_COPY: | |
199 | return &elf_howto_table[(int) R_390_COPY]; | |
200 | case BFD_RELOC_390_GLOB_DAT: | |
201 | return &elf_howto_table[(int) R_390_GLOB_DAT]; | |
202 | case BFD_RELOC_390_JMP_SLOT: | |
203 | return &elf_howto_table[(int) R_390_JMP_SLOT]; | |
204 | case BFD_RELOC_390_RELATIVE: | |
205 | return &elf_howto_table[(int) R_390_RELATIVE]; | |
206 | case BFD_RELOC_32_GOTOFF: | |
5236c819 | 207 | return &elf_howto_table[(int) R_390_GOTOFF32]; |
0451c93c MS |
208 | case BFD_RELOC_390_GOTPC: |
209 | return &elf_howto_table[(int) R_390_GOTPC]; | |
210 | case BFD_RELOC_390_GOT16: | |
211 | return &elf_howto_table[(int) R_390_GOT16]; | |
212 | case BFD_RELOC_16_PCREL: | |
213 | return &elf_howto_table[(int) R_390_PC16]; | |
214 | case BFD_RELOC_390_PC16DBL: | |
215 | return &elf_howto_table[(int) R_390_PC16DBL]; | |
216 | case BFD_RELOC_390_PLT16DBL: | |
217 | return &elf_howto_table[(int) R_390_PLT16DBL]; | |
befc3abb MS |
218 | case BFD_RELOC_390_PC32DBL: |
219 | return &elf_howto_table[(int) R_390_PC32DBL]; | |
220 | case BFD_RELOC_390_PLT32DBL: | |
221 | return &elf_howto_table[(int) R_390_PLT32DBL]; | |
222 | case BFD_RELOC_390_GOTPCDBL: | |
223 | return &elf_howto_table[(int) R_390_GOTPCDBL]; | |
224 | case BFD_RELOC_390_GOTENT: | |
225 | return &elf_howto_table[(int) R_390_GOTENT]; | |
5236c819 MS |
226 | case BFD_RELOC_16_GOTOFF: |
227 | return &elf_howto_table[(int) R_390_GOTOFF16]; | |
228 | case BFD_RELOC_390_GOTPLT12: | |
229 | return &elf_howto_table[(int) R_390_GOTPLT12]; | |
230 | case BFD_RELOC_390_GOTPLT16: | |
231 | return &elf_howto_table[(int) R_390_GOTPLT16]; | |
232 | case BFD_RELOC_390_GOTPLT32: | |
233 | return &elf_howto_table[(int) R_390_GOTPLT32]; | |
234 | case BFD_RELOC_390_GOTPLTENT: | |
235 | return &elf_howto_table[(int) R_390_GOTPLTENT]; | |
236 | case BFD_RELOC_390_PLTOFF16: | |
237 | return &elf_howto_table[(int) R_390_PLTOFF16]; | |
238 | case BFD_RELOC_390_PLTOFF32: | |
239 | return &elf_howto_table[(int) R_390_PLTOFF32]; | |
69fc87f1 MS |
240 | case BFD_RELOC_390_TLS_LOAD: |
241 | return &elf_howto_table[(int) R_390_TLS_LOAD]; | |
242 | case BFD_RELOC_390_TLS_GDCALL: | |
243 | return &elf_howto_table[(int) R_390_TLS_GDCALL]; | |
244 | case BFD_RELOC_390_TLS_LDCALL: | |
245 | return &elf_howto_table[(int) R_390_TLS_LDCALL]; | |
246 | case BFD_RELOC_390_TLS_GD32: | |
247 | return &elf_howto_table[(int) R_390_TLS_GD32]; | |
248 | case BFD_RELOC_390_TLS_GOTIE12: | |
249 | return &elf_howto_table[(int) R_390_TLS_GOTIE12]; | |
250 | case BFD_RELOC_390_TLS_GOTIE32: | |
251 | return &elf_howto_table[(int) R_390_TLS_GOTIE32]; | |
252 | case BFD_RELOC_390_TLS_LDM32: | |
253 | return &elf_howto_table[(int) R_390_TLS_LDM32]; | |
254 | case BFD_RELOC_390_TLS_IE32: | |
255 | return &elf_howto_table[(int) R_390_TLS_IE32]; | |
256 | case BFD_RELOC_390_TLS_IEENT: | |
257 | return &elf_howto_table[(int) R_390_TLS_IEENT]; | |
258 | case BFD_RELOC_390_TLS_LE32: | |
259 | return &elf_howto_table[(int) R_390_TLS_LE32]; | |
260 | case BFD_RELOC_390_TLS_LDO32: | |
261 | return &elf_howto_table[(int) R_390_TLS_LDO32]; | |
262 | case BFD_RELOC_390_TLS_DTPMOD: | |
263 | return &elf_howto_table[(int) R_390_TLS_DTPMOD]; | |
264 | case BFD_RELOC_390_TLS_DTPOFF: | |
265 | return &elf_howto_table[(int) R_390_TLS_DTPOFF]; | |
266 | case BFD_RELOC_390_TLS_TPOFF: | |
267 | return &elf_howto_table[(int) R_390_TLS_TPOFF]; | |
bd1ea41b MS |
268 | case BFD_RELOC_390_20: |
269 | return &elf_howto_table[(int) R_390_20]; | |
270 | case BFD_RELOC_390_GOT20: | |
271 | return &elf_howto_table[(int) R_390_GOT20]; | |
272 | case BFD_RELOC_390_GOTPLT20: | |
273 | return &elf_howto_table[(int) R_390_GOTPLT20]; | |
274 | case BFD_RELOC_390_TLS_GOTIE20: | |
275 | return &elf_howto_table[(int) R_390_TLS_GOTIE20]; | |
470b557a AK |
276 | case BFD_RELOC_390_IRELATIVE: |
277 | return &elf_howto_table[(int) R_390_IRELATIVE]; | |
0451c93c MS |
278 | case BFD_RELOC_VTABLE_INHERIT: |
279 | return &elf32_s390_vtinherit_howto; | |
280 | case BFD_RELOC_VTABLE_ENTRY: | |
281 | return &elf32_s390_vtentry_howto; | |
282 | default: | |
283 | break; | |
284 | } | |
a85d7ed0 NC |
285 | return 0; |
286 | } | |
287 | ||
157090f7 AM |
288 | static reloc_howto_type * |
289 | elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
290 | const char *r_name) | |
291 | { | |
292 | unsigned int i; | |
293 | ||
294 | for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++) | |
295 | if (elf_howto_table[i].name != NULL | |
296 | && strcasecmp (elf_howto_table[i].name, r_name) == 0) | |
297 | return &elf_howto_table[i]; | |
298 | ||
299 | if (strcasecmp (elf32_s390_vtinherit_howto.name, r_name) == 0) | |
300 | return &elf32_s390_vtinherit_howto; | |
301 | if (strcasecmp (elf32_s390_vtentry_howto.name, r_name) == 0) | |
302 | return &elf32_s390_vtentry_howto; | |
303 | ||
304 | return NULL; | |
305 | } | |
306 | ||
a85d7ed0 NC |
307 | /* We need to use ELF32_R_TYPE so we have our own copy of this function, |
308 | and elf32-s390.c has its own copy. */ | |
309 | ||
310 | static void | |
2c3fc389 NC |
311 | elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
312 | arelent *cache_ptr, | |
313 | Elf_Internal_Rela *dst) | |
a85d7ed0 | 314 | { |
d0fb9a8d JJ |
315 | unsigned int r_type = ELF32_R_TYPE(dst->r_info); |
316 | switch (r_type) | |
a85d7ed0 NC |
317 | { |
318 | case R_390_GNU_VTINHERIT: | |
319 | cache_ptr->howto = &elf32_s390_vtinherit_howto; | |
320 | break; | |
321 | ||
322 | case R_390_GNU_VTENTRY: | |
323 | cache_ptr->howto = &elf32_s390_vtentry_howto; | |
324 | break; | |
325 | ||
326 | default: | |
d0fb9a8d JJ |
327 | if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0])) |
328 | { | |
329 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
330 | abfd, (int) r_type); | |
331 | r_type = R_390_NONE; | |
332 | } | |
333 | cache_ptr->howto = &elf_howto_table[r_type]; | |
dc810e39 | 334 | } |
a85d7ed0 NC |
335 | } |
336 | ||
69fc87f1 MS |
337 | /* A relocation function which doesn't do anything. */ |
338 | static bfd_reloc_status_type | |
2c3fc389 NC |
339 | s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
340 | arelent *reloc_entry, | |
341 | asymbol *symbol ATTRIBUTE_UNUSED, | |
342 | void * data ATTRIBUTE_UNUSED, | |
343 | asection *input_section, | |
344 | bfd *output_bfd, | |
345 | char **error_message ATTRIBUTE_UNUSED) | |
69fc87f1 MS |
346 | { |
347 | if (output_bfd) | |
348 | reloc_entry->address += input_section->output_offset; | |
349 | return bfd_reloc_ok; | |
350 | } | |
351 | ||
bd1ea41b MS |
352 | /* Handle the large displacement relocs. */ |
353 | static bfd_reloc_status_type | |
2c3fc389 NC |
354 | s390_elf_ldisp_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
355 | arelent *reloc_entry, | |
356 | asymbol *symbol, | |
357 | void * data ATTRIBUTE_UNUSED, | |
358 | asection *input_section, | |
359 | bfd *output_bfd, | |
360 | char **error_message ATTRIBUTE_UNUSED) | |
bd1ea41b MS |
361 | { |
362 | reloc_howto_type *howto = reloc_entry->howto; | |
363 | bfd_vma relocation; | |
364 | bfd_vma insn; | |
365 | ||
366 | if (output_bfd != (bfd *) NULL | |
367 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
368 | && (! howto->partial_inplace | |
369 | || reloc_entry->addend == 0)) | |
370 | { | |
371 | reloc_entry->address += input_section->output_offset; | |
372 | return bfd_reloc_ok; | |
373 | } | |
374 | ||
375 | if (output_bfd != NULL) | |
376 | return bfd_reloc_continue; | |
377 | ||
07515404 | 378 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
bd1ea41b MS |
379 | return bfd_reloc_outofrange; |
380 | ||
381 | relocation = (symbol->value | |
382 | + symbol->section->output_section->vma | |
383 | + symbol->section->output_offset); | |
384 | relocation += reloc_entry->addend; | |
385 | if (howto->pc_relative) | |
386 | { | |
387 | relocation -= (input_section->output_section->vma | |
388 | + input_section->output_offset); | |
389 | relocation -= reloc_entry->address; | |
390 | } | |
391 | ||
392 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
393 | insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4; | |
394 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); | |
395 | ||
396 | if ((bfd_signed_vma) relocation < - 0x80000 | |
397 | || (bfd_signed_vma) relocation > 0x7ffff) | |
398 | return bfd_reloc_overflow; | |
399 | else | |
400 | return bfd_reloc_ok; | |
401 | } | |
402 | ||
b34976b6 | 403 | static bfd_boolean |
2c3fc389 | 404 | elf_s390_is_local_label_name (bfd *abfd, const char *name) |
a85d7ed0 NC |
405 | { |
406 | if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L')) | |
b34976b6 | 407 | return TRUE; |
a85d7ed0 NC |
408 | |
409 | return _bfd_elf_is_local_label_name (abfd, name); | |
410 | } | |
411 | ||
412 | /* Functions for the 390 ELF linker. */ | |
413 | ||
414 | /* The name of the dynamic interpreter. This is put in the .interp | |
415 | section. */ | |
416 | ||
87049b0d | 417 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" |
a85d7ed0 | 418 | |
64285810 MS |
419 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
420 | copying dynamic variables from a shared lib into an app's dynbss | |
421 | section, and instead use a dynamic relocation to point into the | |
422 | shared lib. */ | |
423 | #define ELIMINATE_COPY_RELOCS 1 | |
424 | ||
a85d7ed0 NC |
425 | /* The size in bytes of the first entry in the procedure linkage table. */ |
426 | #define PLT_FIRST_ENTRY_SIZE 32 | |
427 | /* The size in bytes of an entry in the procedure linkage table. */ | |
dc810e39 | 428 | #define PLT_ENTRY_SIZE 32 |
a85d7ed0 NC |
429 | |
430 | #define GOT_ENTRY_SIZE 4 | |
431 | ||
470b557a AK |
432 | #define RELA_ENTRY_SIZE sizeof (Elf32_External_Rela) |
433 | ||
a85d7ed0 NC |
434 | /* The first three entries in a procedure linkage table are reserved, |
435 | and the initial contents are unimportant (we zero them out). | |
436 | Subsequent entries look like this. See the SVR4 ABI 386 | |
437 | supplement to see how this works. */ | |
438 | ||
439 | /* For the s390, simple addr offset can only be 0 - 4096. | |
440 | To use the full 2 GB address space, several instructions | |
441 | are needed to load an address in a register and execute | |
442 | a branch( or just saving the address) | |
443 | ||
dc810e39 | 444 | Furthermore, only r 0 and 1 are free to use!!! */ |
a85d7ed0 NC |
445 | |
446 | /* The first 3 words in the GOT are then reserved. | |
447 | Word 0 is the address of the dynamic table. | |
448 | Word 1 is a pointer to a structure describing the object | |
449 | Word 2 is used to point to the loader entry address. | |
450 | ||
4cc11e76 | 451 | The code for position independent PLT entries looks like this: |
a85d7ed0 NC |
452 | |
453 | r12 holds addr of the current GOT at entry to the PLT | |
454 | ||
455 | The GOT holds the address in the PLT to be executed. | |
456 | The loader then gets: | |
457 | 24(15) = Pointer to the structure describing the object. | |
a7e28bbe | 458 | 28(15) = Offset into rela.plt |
a85d7ed0 NC |
459 | |
460 | The loader must then find the module where the function is | |
461 | and insert the address in the GOT. | |
462 | ||
463 | Note: 390 can only address +- 64 K relative. | |
464 | We check if offset > 65536, then make a relative branch -64xxx | |
465 | back to a previous defined branch | |
466 | ||
467 | PLT1: BASR 1,0 # 2 bytes | |
468 | L 1,22(1) # 4 bytes Load offset in GOT in r 1 | |
469 | L 1,(1,12) # 4 bytes Load address from GOT in r1 | |
470 | BCR 15,1 # 2 bytes Jump to address | |
471 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
472 | L 1,14(1) # 4 bytes Load offset in symol table in r1 | |
473 | BRC 15,-x # 4 bytes Jump to start of PLT | |
474 | .word 0 # 2 bytes filler | |
475 | .long ? # 4 bytes offset in GOT | |
a7e28bbe | 476 | .long ? # 4 bytes offset into rela.plt |
a85d7ed0 NC |
477 | |
478 | This was the general case. There are two additional, optimizes PLT | |
479 | definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768. | |
480 | First the one for GOT offsets < 4096: | |
481 | ||
482 | PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1 | |
483 | BCR 15,1 # 2 bytes Jump to address | |
484 | .word 0,0,0 # 6 bytes filler | |
485 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
a7e28bbe | 486 | L 1,14(1) # 4 bytes Load offset in rela.plt in r1 |
a85d7ed0 NC |
487 | BRC 15,-x # 4 bytes Jump to start of PLT |
488 | .word 0,0,0 # 6 bytes filler | |
a7e28bbe | 489 | .long ? # 4 bytes offset into rela.plt |
a85d7ed0 NC |
490 | |
491 | Second the one for GOT offsets < 32768: | |
492 | ||
493 | PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1 | |
494 | L 1,(1,12) # 4 bytes Load address from GOT to r1 | |
495 | BCR 15,1 # 2 bytes Jump to address | |
496 | .word 0 # 2 bytes filler | |
497 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
a7e28bbe | 498 | L 1,14(1) # 4 bytes Load offset in rela.plt in r1 |
a85d7ed0 NC |
499 | BRC 15,-x # 4 bytes Jump to start of PLT |
500 | .word 0,0,0 # 6 bytes filler | |
a7e28bbe | 501 | .long ? # 4 bytes offset into rela.plt |
a85d7ed0 NC |
502 | |
503 | Total = 32 bytes per PLT entry | |
504 | ||
505 | The code for static build PLT entries looks like this: | |
506 | ||
507 | PLT1: BASR 1,0 # 2 bytes | |
508 | L 1,22(1) # 4 bytes Load address of GOT entry | |
509 | L 1,0(0,1) # 4 bytes Load address from GOT in r1 | |
510 | BCR 15,1 # 2 bytes Jump to address | |
511 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
512 | L 1,14(1) # 4 bytes Load offset in symbol table in r1 | |
513 | BRC 15,-x # 4 bytes Jump to start of PLT | |
514 | .word 0 # 2 bytes filler | |
515 | .long ? # 4 bytes address of GOT entry | |
a7e28bbe | 516 | .long ? # 4 bytes offset into rela.plt */ |
a85d7ed0 | 517 | |
9aa17453 AK |
518 | static const bfd_byte elf_s390_plt_entry[PLT_ENTRY_SIZE] = |
519 | { | |
520 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
521 | 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */ | |
522 | 0x58, 0x10, 0x10, 0x00, /* l %r1,0(%r1) */ | |
523 | 0x07, 0xf1, /* br %r1 */ | |
524 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
525 | 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */ | |
526 | 0xa7, 0xf4, 0x00, 0x00, /* j first plt */ | |
527 | 0x00, 0x00, /* padding */ | |
528 | 0x00, 0x00, 0x00, 0x00, /* GOT offset */ | |
529 | 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */ | |
530 | }; | |
531 | ||
532 | /* Generic PLT pic entry. */ | |
533 | static const bfd_byte elf_s390_plt_pic_entry[PLT_ENTRY_SIZE] = | |
534 | { | |
535 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
536 | 0x58, 0x10, 0x10, 0x16, /* l %r1,22(%r1) */ | |
537 | 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */ | |
538 | 0x07, 0xf1, /* br %r1 */ | |
539 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
540 | 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */ | |
541 | 0xa7, 0xf4, 0x00, 0x00, /* j first plt */ | |
542 | 0x00, 0x00, /* padding */ | |
543 | 0x00, 0x00, 0x00, 0x00, /* GOT offset */ | |
544 | 0x00, 0x00, 0x00, 0x00 /* rela.plt offset */ | |
545 | }; | |
546 | ||
547 | /* Optimized PLT pic entry for GOT offset < 4k. xx will be replaced | |
548 | when generating the PLT slot with the GOT offset. */ | |
549 | static const bfd_byte elf_s390_plt_pic12_entry[PLT_ENTRY_SIZE] = | |
550 | { | |
551 | 0x58, 0x10, 0xc0, 0x00, /* l %r1,xx(%r12) */ | |
552 | 0x07, 0xf1, /* br %r1 */ | |
553 | 0x00, 0x00, 0x00, 0x00, /* padding */ | |
554 | 0x00, 0x00, | |
555 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
556 | 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */ | |
557 | 0xa7, 0xf4, 0x00, 0x00, /* j first plt */ | |
558 | 0x00, 0x00, 0x00, 0x00, | |
559 | 0x00, 0x00, 0x00, 0x00 | |
560 | }; | |
561 | ||
562 | /* Optimized PLT pic entry for GOT offset < 32k. xx will be replaced | |
563 | when generating the PLT slot with the GOT offset. */ | |
564 | static const bfd_byte elf_s390_plt_pic16_entry[PLT_ENTRY_SIZE] = | |
565 | { | |
566 | 0xa7, 0x18, 0x00, 0x00, /* lhi %r1,xx */ | |
567 | 0x58, 0x11, 0xc0, 0x00, /* l %r1,0(%r1,%r12) */ | |
568 | 0x07, 0xf1, /* br %r1 */ | |
569 | 0x00, 0x00, | |
570 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
571 | 0x58, 0x10, 0x10, 0x0e, /* l %r1,14(%r1) */ | |
572 | 0xa7, 0xf4, 0x00, 0x00, /* j first plt */ | |
573 | 0x00, 0x00, 0x00, 0x00, | |
574 | 0x00, 0x00, 0x00, 0x00, | |
575 | 0x00, 0x00 | |
576 | }; | |
a85d7ed0 | 577 | |
a7e28bbe | 578 | /* The first PLT entry pushes the offset into the rela.plt |
a85d7ed0 NC |
579 | from R1 onto the stack at 8(15) and the loader object info |
580 | at 12(15), loads the loader address in R1 and jumps to it. */ | |
581 | ||
582 | /* The first entry in the PLT for PIC code: | |
583 | ||
584 | PLT0: | |
a7e28bbe | 585 | ST 1,28(15) # R1 has offset into rela.plt |
a85d7ed0 | 586 | L 1,4(12) # Get loader ino(object struct address) |
dc810e39 | 587 | ST 1,24(15) # Store address |
a85d7ed0 NC |
588 | L 1,8(12) # Entry address of loader in R1 |
589 | BR 1 # Jump to loader | |
590 | ||
591 | The first entry in the PLT for static code: | |
592 | ||
593 | PLT0: | |
a7e28bbe | 594 | ST 1,28(15) # R1 has offset into rela.plt |
a85d7ed0 NC |
595 | BASR 1,0 |
596 | L 1,18(0,1) # Get address of GOT | |
597 | MVC 24(4,15),4(1) # Move loader ino to stack | |
598 | L 1,8(1) # Get address of loader | |
599 | BR 1 # Jump to loader | |
600 | .word 0 # filler | |
601 | .long got # address of GOT */ | |
602 | ||
9aa17453 AK |
603 | static const bfd_byte elf_s390_plt_first_entry[PLT_FIRST_ENTRY_SIZE] = |
604 | { | |
605 | 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */ | |
606 | 0x0d, 0x10, /* basr %r1,%r0 */ | |
607 | 0x58, 0x10, 0x10, 0x12, /* l %r1,18(%r1) */ | |
608 | 0xd2, 0x03, 0xf0, 0x18, 0x10, 0x04, /* mvc 24(4,%r15),4(%r1) */ | |
609 | 0x58, 0x10, 0x10, 0x08, /* l %r1,8(%r1) */ | |
610 | 0x07, 0xf1, /* br %r1 */ | |
611 | 0x00, 0x00, 0x00, 0x00, | |
612 | 0x00, 0x00, 0x00, 0x00, | |
613 | 0x00, 0x00 | |
614 | }; | |
615 | ||
616 | static const bfd_byte elf_s390_plt_pic_first_entry[PLT_FIRST_ENTRY_SIZE] = | |
617 | { | |
618 | 0x50, 0x10, 0xf0, 0x1c, /* st %r1,28(%r15) */ | |
619 | 0x58, 0x10, 0xc0, 0x04, /* l %r1,4(%r12) */ | |
620 | 0x50, 0x10, 0xf0, 0x18, /* st %r1,24(%r15) */ | |
621 | 0x58, 0x10, 0xc0, 0x08, /* l %r1,8(%r12) */ | |
622 | 0x07, 0xf1, /* br %r1 */ | |
623 | 0x00, 0x00, 0x00, 0x00, | |
624 | 0x00, 0x00, 0x00, 0x00, | |
625 | 0x00, 0x00, 0x00, 0x00, | |
626 | 0x00, 0x00 | |
627 | }; | |
a85d7ed0 | 628 | |
a85d7ed0 NC |
629 | |
630 | /* s390 ELF linker hash entry. */ | |
631 | ||
632 | struct elf_s390_link_hash_entry | |
633 | { | |
0451c93c | 634 | struct elf_link_hash_entry elf; |
a85d7ed0 | 635 | |
0451c93c | 636 | /* Track dynamic relocs copied for this symbol. */ |
00d8c7a9 | 637 | struct elf_dyn_relocs *dyn_relocs; |
5236c819 MS |
638 | |
639 | /* Number of GOTPLT references for a function. */ | |
640 | bfd_signed_vma gotplt_refcount; | |
69fc87f1 MS |
641 | |
642 | #define GOT_UNKNOWN 0 | |
643 | #define GOT_NORMAL 1 | |
644 | #define GOT_TLS_GD 2 | |
645 | #define GOT_TLS_IE 3 | |
646 | #define GOT_TLS_IE_NLT 4 | |
647 | unsigned char tls_type; | |
470b557a AK |
648 | |
649 | /* For pointer equality reasons we might need to change the symbol | |
650 | type from STT_GNU_IFUNC to STT_FUNC together with its value and | |
651 | section entry. So after alloc_dynrelocs only these values should | |
652 | be used. In order to check whether a symbol is IFUNC use | |
653 | s390_is_ifunc_symbol_p. */ | |
654 | bfd_vma ifunc_resolver_address; | |
655 | asection *ifunc_resolver_section; | |
a85d7ed0 NC |
656 | }; |
657 | ||
69fc87f1 MS |
658 | #define elf_s390_hash_entry(ent) \ |
659 | ((struct elf_s390_link_hash_entry *)(ent)) | |
660 | ||
470b557a AK |
661 | /* This structure represents an entry in the local PLT list needed for |
662 | local IFUNC symbols. */ | |
663 | struct plt_entry | |
664 | { | |
665 | /* The section of the local symbol. | |
666 | Set in relocate_section and used in finish_dynamic_sections. */ | |
667 | asection *sec; | |
668 | ||
669 | union | |
670 | { | |
671 | bfd_signed_vma refcount; | |
672 | bfd_vma offset; | |
673 | } plt; | |
674 | }; | |
675 | ||
0ffa91dd NC |
676 | /* NOTE: Keep this structure in sync with |
677 | the one declared in elf64-s390.c. */ | |
69fc87f1 MS |
678 | struct elf_s390_obj_tdata |
679 | { | |
680 | struct elf_obj_tdata root; | |
681 | ||
470b557a AK |
682 | /* A local PLT is needed for ifunc symbols. */ |
683 | struct plt_entry *local_plt; | |
684 | ||
0ffa91dd | 685 | /* TLS type for each local got entry. */ |
69fc87f1 MS |
686 | char *local_got_tls_type; |
687 | }; | |
688 | ||
689 | #define elf_s390_tdata(abfd) \ | |
690 | ((struct elf_s390_obj_tdata *) (abfd)->tdata.any) | |
691 | ||
470b557a AK |
692 | #define elf_s390_local_plt(abfd) \ |
693 | (elf_s390_tdata (abfd)->local_plt) | |
694 | ||
69fc87f1 MS |
695 | #define elf_s390_local_got_tls_type(abfd) \ |
696 | (elf_s390_tdata (abfd)->local_got_tls_type) | |
697 | ||
0ffa91dd NC |
698 | #define is_s390_elf(bfd) \ |
699 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
700 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 701 | && elf_object_id (bfd) == S390_ELF_DATA) |
0ffa91dd | 702 | |
69fc87f1 | 703 | static bfd_boolean |
62d7a5f6 | 704 | elf_s390_mkobject (bfd *abfd) |
69fc87f1 | 705 | { |
0ffa91dd | 706 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata), |
4dfe6ac6 | 707 | S390_ELF_DATA); |
69fc87f1 MS |
708 | } |
709 | ||
710 | static bfd_boolean | |
2c3fc389 | 711 | elf_s390_object_p (bfd *abfd) |
69fc87f1 | 712 | { |
69fc87f1 MS |
713 | /* Set the right machine number for an s390 elf32 file. */ |
714 | return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31); | |
715 | } | |
716 | ||
a85d7ed0 NC |
717 | /* s390 ELF linker hash table. */ |
718 | ||
719 | struct elf_s390_link_hash_table | |
720 | { | |
0451c93c | 721 | struct elf_link_hash_table elf; |
a85d7ed0 | 722 | |
0451c93c | 723 | /* Short-cuts to get to dynamic linker sections. */ |
0451c93c MS |
724 | asection *sdynbss; |
725 | asection *srelbss; | |
470b557a | 726 | asection *irelifunc; |
ec338859 | 727 | |
2c3fc389 NC |
728 | union |
729 | { | |
69fc87f1 MS |
730 | bfd_signed_vma refcount; |
731 | bfd_vma offset; | |
732 | } tls_ldm_got; | |
733 | ||
87d72d41 AM |
734 | /* Small local sym cache. */ |
735 | struct sym_cache sym_cache; | |
0451c93c | 736 | }; |
a85d7ed0 NC |
737 | |
738 | /* Get the s390 ELF linker hash table from a link_info structure. */ | |
739 | ||
740 | #define elf_s390_hash_table(p) \ | |
4dfe6ac6 NC |
741 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
742 | == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL) | |
a85d7ed0 | 743 | |
470b557a AK |
744 | #undef ELF64 |
745 | #include "elf-s390-common.c" | |
746 | ||
a85d7ed0 NC |
747 | /* Create an entry in an s390 ELF linker hash table. */ |
748 | ||
749 | static struct bfd_hash_entry * | |
2c3fc389 NC |
750 | link_hash_newfunc (struct bfd_hash_entry *entry, |
751 | struct bfd_hash_table *table, | |
752 | const char *string) | |
a85d7ed0 | 753 | { |
a85d7ed0 NC |
754 | /* Allocate the structure if it has not already been allocated by a |
755 | subclass. */ | |
0451c93c MS |
756 | if (entry == NULL) |
757 | { | |
758 | entry = bfd_hash_allocate (table, | |
759 | sizeof (struct elf_s390_link_hash_entry)); | |
760 | if (entry == NULL) | |
761 | return entry; | |
762 | } | |
ec338859 | 763 | |
a85d7ed0 | 764 | /* Call the allocation method of the superclass. */ |
0451c93c MS |
765 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
766 | if (entry != NULL) | |
a85d7ed0 | 767 | { |
0451c93c | 768 | struct elf_s390_link_hash_entry *eh; |
ec338859 | 769 | |
0451c93c MS |
770 | eh = (struct elf_s390_link_hash_entry *) entry; |
771 | eh->dyn_relocs = NULL; | |
5236c819 | 772 | eh->gotplt_refcount = 0; |
69fc87f1 | 773 | eh->tls_type = GOT_UNKNOWN; |
470b557a AK |
774 | eh->ifunc_resolver_address = 0; |
775 | eh->ifunc_resolver_section = NULL; | |
a85d7ed0 NC |
776 | } |
777 | ||
0451c93c | 778 | return entry; |
a85d7ed0 NC |
779 | } |
780 | ||
781 | /* Create an s390 ELF linker hash table. */ | |
782 | ||
783 | static struct bfd_link_hash_table * | |
2c3fc389 | 784 | elf_s390_link_hash_table_create (bfd *abfd) |
a85d7ed0 NC |
785 | { |
786 | struct elf_s390_link_hash_table *ret; | |
dc810e39 | 787 | bfd_size_type amt = sizeof (struct elf_s390_link_hash_table); |
a85d7ed0 | 788 | |
e2d34d7d | 789 | ret = (struct elf_s390_link_hash_table *) bfd_malloc (amt); |
0451c93c | 790 | if (ret == NULL) |
a85d7ed0 NC |
791 | return NULL; |
792 | ||
66eb6687 | 793 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
794 | sizeof (struct elf_s390_link_hash_entry), |
795 | S390_ELF_DATA)) | |
a85d7ed0 | 796 | { |
e2d34d7d | 797 | free (ret); |
a85d7ed0 NC |
798 | return NULL; |
799 | } | |
800 | ||
f41345a7 AK |
801 | ret->elf.sgot = NULL; |
802 | ret->elf.sgotplt = NULL; | |
803 | ret->elf.srelgot = NULL; | |
804 | ret->elf.splt = NULL; | |
805 | ret->elf.srelplt = NULL; | |
0451c93c MS |
806 | ret->sdynbss = NULL; |
807 | ret->srelbss = NULL; | |
69fc87f1 | 808 | ret->tls_ldm_got.refcount = 0; |
87d72d41 | 809 | ret->sym_cache.abfd = NULL; |
0451c93c MS |
810 | |
811 | return &ret->elf.root; | |
812 | } | |
813 | ||
814 | /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up | |
815 | shortcuts to them in our hash table. */ | |
816 | ||
b34976b6 | 817 | static bfd_boolean |
2c3fc389 | 818 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
0451c93c MS |
819 | { |
820 | struct elf_s390_link_hash_table *htab; | |
821 | ||
822 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 823 | return FALSE; |
0451c93c MS |
824 | |
825 | htab = elf_s390_hash_table (info); | |
3d4d4302 AM |
826 | htab->elf.sgot = bfd_get_linker_section (dynobj, ".got"); |
827 | htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt"); | |
828 | htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got"); | |
f41345a7 | 829 | if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot) |
0451c93c MS |
830 | abort (); |
831 | ||
b34976b6 | 832 | return TRUE; |
0451c93c MS |
833 | } |
834 | ||
835 | /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and | |
836 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our | |
837 | hash table. */ | |
838 | ||
b34976b6 | 839 | static bfd_boolean |
2c3fc389 | 840 | elf_s390_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
0451c93c MS |
841 | { |
842 | struct elf_s390_link_hash_table *htab; | |
843 | ||
844 | htab = elf_s390_hash_table (info); | |
f41345a7 | 845 | if (!htab->elf.sgot && !create_got_section (dynobj, info)) |
b34976b6 | 846 | return FALSE; |
0451c93c MS |
847 | |
848 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
b34976b6 | 849 | return FALSE; |
0451c93c | 850 | |
3d4d4302 AM |
851 | htab->elf.splt = bfd_get_linker_section (dynobj, ".plt"); |
852 | htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt"); | |
853 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); | |
0451c93c | 854 | if (!info->shared) |
3d4d4302 | 855 | htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
0451c93c | 856 | |
f41345a7 | 857 | if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss |
0451c93c MS |
858 | || (!info->shared && !htab->srelbss)) |
859 | abort (); | |
860 | ||
b34976b6 | 861 | return TRUE; |
a85d7ed0 NC |
862 | } |
863 | ||
0451c93c MS |
864 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
865 | ||
866 | static void | |
2c3fc389 NC |
867 | elf_s390_copy_indirect_symbol (struct bfd_link_info *info, |
868 | struct elf_link_hash_entry *dir, | |
869 | struct elf_link_hash_entry *ind) | |
0451c93c MS |
870 | { |
871 | struct elf_s390_link_hash_entry *edir, *eind; | |
872 | ||
873 | edir = (struct elf_s390_link_hash_entry *) dir; | |
874 | eind = (struct elf_s390_link_hash_entry *) ind; | |
875 | ||
876 | if (eind->dyn_relocs != NULL) | |
877 | { | |
878 | if (edir->dyn_relocs != NULL) | |
879 | { | |
00d8c7a9 AK |
880 | struct elf_dyn_relocs **pp; |
881 | struct elf_dyn_relocs *p; | |
0451c93c | 882 | |
fcfa13d2 | 883 | /* Add reloc counts against the indirect sym to the direct sym |
0451c93c MS |
884 | list. Merge any entries against the same section. */ |
885 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
886 | { | |
00d8c7a9 | 887 | struct elf_dyn_relocs *q; |
0451c93c MS |
888 | |
889 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
890 | if (q->sec == p->sec) | |
891 | { | |
892 | q->pc_count += p->pc_count; | |
893 | q->count += p->count; | |
894 | *pp = p->next; | |
895 | break; | |
896 | } | |
897 | if (q == NULL) | |
898 | pp = &p->next; | |
899 | } | |
900 | *pp = edir->dyn_relocs; | |
901 | } | |
902 | ||
903 | edir->dyn_relocs = eind->dyn_relocs; | |
904 | eind->dyn_relocs = NULL; | |
905 | } | |
906 | ||
69fc87f1 MS |
907 | if (ind->root.type == bfd_link_hash_indirect |
908 | && dir->got.refcount <= 0) | |
909 | { | |
910 | edir->tls_type = eind->tls_type; | |
911 | eind->tls_type = GOT_UNKNOWN; | |
912 | } | |
913 | ||
64285810 MS |
914 | if (ELIMINATE_COPY_RELOCS |
915 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
916 | && dir->dynamic_adjusted) |
917 | { | |
918 | /* If called to transfer flags for a weakdef during processing | |
919 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
920 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
921 | dir->ref_dynamic |= ind->ref_dynamic; | |
922 | dir->ref_regular |= ind->ref_regular; | |
923 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
924 | dir->needs_plt |= ind->needs_plt; | |
925 | } | |
64285810 | 926 | else |
fcfa13d2 | 927 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
0451c93c | 928 | } |
a85d7ed0 | 929 | |
69fc87f1 | 930 | static int |
2c3fc389 NC |
931 | elf_s390_tls_transition (struct bfd_link_info *info, |
932 | int r_type, | |
933 | int is_local) | |
69fc87f1 MS |
934 | { |
935 | if (info->shared) | |
936 | return r_type; | |
937 | ||
938 | switch (r_type) | |
939 | { | |
940 | case R_390_TLS_GD32: | |
941 | case R_390_TLS_IE32: | |
942 | if (is_local) | |
943 | return R_390_TLS_LE32; | |
944 | return R_390_TLS_IE32; | |
945 | case R_390_TLS_GOTIE32: | |
946 | if (is_local) | |
947 | return R_390_TLS_LE32; | |
948 | return R_390_TLS_GOTIE32; | |
949 | case R_390_TLS_LDM32: | |
950 | return R_390_TLS_LE32; | |
951 | } | |
952 | ||
953 | return r_type; | |
954 | } | |
955 | ||
a85d7ed0 NC |
956 | /* Look through the relocs for a section during the first phase, and |
957 | allocate space in the global offset table or procedure linkage | |
958 | table. */ | |
959 | ||
b34976b6 | 960 | static bfd_boolean |
2c3fc389 NC |
961 | elf_s390_check_relocs (bfd *abfd, |
962 | struct bfd_link_info *info, | |
963 | asection *sec, | |
964 | const Elf_Internal_Rela *relocs) | |
a85d7ed0 | 965 | { |
0451c93c | 966 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
967 | Elf_Internal_Shdr *symtab_hdr; |
968 | struct elf_link_hash_entry **sym_hashes; | |
a85d7ed0 NC |
969 | const Elf_Internal_Rela *rel; |
970 | const Elf_Internal_Rela *rel_end; | |
a85d7ed0 | 971 | asection *sreloc; |
5236c819 | 972 | bfd_signed_vma *local_got_refcounts; |
69fc87f1 | 973 | int tls_type, old_tls_type; |
470b557a | 974 | Elf_Internal_Sym *isym; |
a85d7ed0 | 975 | |
1049f94e | 976 | if (info->relocatable) |
b34976b6 | 977 | return TRUE; |
a85d7ed0 | 978 | |
0ffa91dd NC |
979 | BFD_ASSERT (is_s390_elf (abfd)); |
980 | ||
0451c93c | 981 | htab = elf_s390_hash_table (info); |
0ffa91dd | 982 | symtab_hdr = &elf_symtab_hdr (abfd); |
a85d7ed0 | 983 | sym_hashes = elf_sym_hashes (abfd); |
5236c819 | 984 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 985 | |
a85d7ed0 NC |
986 | sreloc = NULL; |
987 | ||
988 | rel_end = relocs + sec->reloc_count; | |
989 | for (rel = relocs; rel < rel_end; rel++) | |
990 | { | |
69fc87f1 | 991 | unsigned int r_type; |
a85d7ed0 NC |
992 | unsigned long r_symndx; |
993 | struct elf_link_hash_entry *h; | |
994 | ||
995 | r_symndx = ELF32_R_SYM (rel->r_info); | |
996 | ||
0451c93c MS |
997 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
998 | { | |
d003868e AM |
999 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
1000 | abfd, r_symndx); | |
b34976b6 | 1001 | return FALSE; |
0451c93c MS |
1002 | } |
1003 | ||
a85d7ed0 | 1004 | if (r_symndx < symtab_hdr->sh_info) |
470b557a AK |
1005 | { |
1006 | /* A local symbol. */ | |
1007 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1008 | abfd, r_symndx); | |
1009 | if (isym == NULL) | |
1010 | return FALSE; | |
1011 | ||
1012 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
1013 | { | |
1014 | struct plt_entry *plt; | |
1015 | ||
0cb79d69 AK |
1016 | if (htab->elf.dynobj == NULL) |
1017 | htab->elf.dynobj = abfd; | |
1018 | ||
470b557a AK |
1019 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) |
1020 | return FALSE; | |
1021 | ||
1022 | if (local_got_refcounts == NULL) | |
1023 | { | |
1024 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) | |
1025 | return FALSE; | |
1026 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1027 | } | |
1028 | plt = elf_s390_local_plt (abfd); | |
1029 | plt[r_symndx].plt.refcount++; | |
1030 | } | |
1031 | h = NULL; | |
1032 | } | |
a85d7ed0 | 1033 | else |
973a3492 L |
1034 | { |
1035 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1036 | while (h->root.type == bfd_link_hash_indirect | |
1037 | || h->root.type == bfd_link_hash_warning) | |
1038 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1039 | } | |
a85d7ed0 | 1040 | |
5236c819 MS |
1041 | /* Create got section and local_got_refcounts array if they |
1042 | are needed. */ | |
69fc87f1 MS |
1043 | r_type = elf_s390_tls_transition (info, |
1044 | ELF32_R_TYPE (rel->r_info), | |
1045 | h == NULL); | |
1046 | switch (r_type) | |
a85d7ed0 NC |
1047 | { |
1048 | case R_390_GOT12: | |
5236c819 | 1049 | case R_390_GOT16: |
bd1ea41b | 1050 | case R_390_GOT20: |
a85d7ed0 | 1051 | case R_390_GOT32: |
befc3abb | 1052 | case R_390_GOTENT: |
5236c819 MS |
1053 | case R_390_GOTPLT12: |
1054 | case R_390_GOTPLT16: | |
bd1ea41b | 1055 | case R_390_GOTPLT20: |
5236c819 MS |
1056 | case R_390_GOTPLT32: |
1057 | case R_390_GOTPLTENT: | |
69fc87f1 MS |
1058 | case R_390_TLS_GD32: |
1059 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1060 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1061 | case R_390_TLS_GOTIE32: |
1062 | case R_390_TLS_IEENT: | |
1063 | case R_390_TLS_IE32: | |
1064 | case R_390_TLS_LDM32: | |
5236c819 MS |
1065 | if (h == NULL |
1066 | && local_got_refcounts == NULL) | |
a85d7ed0 | 1067 | { |
470b557a | 1068 | if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr)) |
5236c819 | 1069 | return FALSE; |
470b557a | 1070 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 1071 | } |
5236c819 MS |
1072 | /* Fall through. */ |
1073 | case R_390_GOTOFF16: | |
1074 | case R_390_GOTOFF32: | |
0451c93c | 1075 | case R_390_GOTPC: |
befc3abb | 1076 | case R_390_GOTPCDBL: |
f41345a7 | 1077 | if (htab->elf.sgot == NULL) |
0451c93c MS |
1078 | { |
1079 | if (htab->elf.dynobj == NULL) | |
1080 | htab->elf.dynobj = abfd; | |
1081 | if (!create_got_section (htab->elf.dynobj, info)) | |
b34976b6 | 1082 | return FALSE; |
0451c93c | 1083 | } |
5236c819 MS |
1084 | } |
1085 | ||
470b557a AK |
1086 | if (h != NULL) |
1087 | { | |
1088 | if (htab->elf.dynobj == NULL) | |
1089 | htab->elf.dynobj = abfd; | |
1090 | if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
1091 | return FALSE; | |
1092 | ||
1093 | /* Make sure an IFUNC symbol defined in a non-shared object | |
1094 | always gets a PLT slot. */ | |
1095 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
1096 | { | |
1097 | /* The symbol is called by the dynamic loader in order | |
1098 | to resolve the relocation. So it is in fact also | |
1099 | referenced. */ | |
1100 | h->ref_regular = 1; | |
1101 | h->needs_plt = 1; | |
1102 | } | |
1103 | } | |
69fc87f1 | 1104 | switch (r_type) |
5236c819 | 1105 | { |
5236c819 MS |
1106 | case R_390_GOTOFF16: |
1107 | case R_390_GOTOFF32: | |
1108 | case R_390_GOTPC: | |
1109 | case R_390_GOTPCDBL: | |
470b557a AK |
1110 | /* These relocs do not need a GOT slot. They just load the |
1111 | GOT pointer itself or address something else relative to | |
1112 | the GOT. Since the GOT pointer has been set up above we | |
1113 | are done. */ | |
a85d7ed0 NC |
1114 | break; |
1115 | ||
26e41594 AM |
1116 | case R_390_PLT16DBL: |
1117 | case R_390_PLT32DBL: | |
a85d7ed0 | 1118 | case R_390_PLT32: |
5236c819 MS |
1119 | case R_390_PLTOFF16: |
1120 | case R_390_PLTOFF32: | |
a85d7ed0 | 1121 | /* This symbol requires a procedure linkage table entry. We |
26e41594 AM |
1122 | actually build the entry in adjust_dynamic_symbol, |
1123 | because this might be a case of linking PIC code which is | |
1124 | never referenced by a dynamic object, in which case we | |
1125 | don't need to generate a procedure linkage table entry | |
1126 | after all. */ | |
a85d7ed0 NC |
1127 | |
1128 | /* If this is a local symbol, we resolve it directly without | |
26e41594 | 1129 | creating a procedure linkage table entry. */ |
5236c819 MS |
1130 | if (h != NULL) |
1131 | { | |
f5385ebf | 1132 | h->needs_plt = 1; |
5236c819 MS |
1133 | h->plt.refcount += 1; |
1134 | } | |
1135 | break; | |
a85d7ed0 | 1136 | |
5236c819 MS |
1137 | case R_390_GOTPLT12: |
1138 | case R_390_GOTPLT16: | |
bd1ea41b | 1139 | case R_390_GOTPLT20: |
5236c819 MS |
1140 | case R_390_GOTPLT32: |
1141 | case R_390_GOTPLTENT: | |
1142 | /* This symbol requires either a procedure linkage table entry | |
1143 | or an entry in the local got. We actually build the entry | |
1144 | in adjust_dynamic_symbol because whether this is really a | |
1145 | global reference can change and with it the fact if we have | |
1146 | to create a plt entry or a local got entry. To be able to | |
1147 | make a once global symbol a local one we have to keep track | |
1148 | of the number of gotplt references that exist for this | |
1149 | symbol. */ | |
1150 | if (h != NULL) | |
1151 | { | |
1152 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++; | |
f5385ebf | 1153 | h->needs_plt = 1; |
5236c819 MS |
1154 | h->plt.refcount += 1; |
1155 | } | |
1156 | else | |
1157 | local_got_refcounts[r_symndx] += 1; | |
a85d7ed0 NC |
1158 | break; |
1159 | ||
69fc87f1 MS |
1160 | case R_390_TLS_LDM32: |
1161 | htab->tls_ldm_got.refcount += 1; | |
1162 | break; | |
1163 | ||
1164 | case R_390_TLS_IE32: | |
1165 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1166 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1167 | case R_390_TLS_GOTIE32: |
1168 | case R_390_TLS_IEENT: | |
1169 | if (info->shared) | |
1170 | info->flags |= DF_STATIC_TLS; | |
ae9a127f | 1171 | /* Fall through. */ |
69fc87f1 MS |
1172 | |
1173 | case R_390_GOT12: | |
26e41594 | 1174 | case R_390_GOT16: |
bd1ea41b | 1175 | case R_390_GOT20: |
69fc87f1 MS |
1176 | case R_390_GOT32: |
1177 | case R_390_GOTENT: | |
1178 | case R_390_TLS_GD32: | |
1179 | /* This symbol requires a global offset table entry. */ | |
1180 | switch (r_type) | |
1181 | { | |
1182 | default: | |
1183 | case R_390_GOT12: | |
1184 | case R_390_GOT16: | |
bd1ea41b | 1185 | case R_390_GOT20: |
69fc87f1 MS |
1186 | case R_390_GOT32: |
1187 | case R_390_GOTENT: | |
1188 | tls_type = GOT_NORMAL; | |
1189 | break; | |
1190 | case R_390_TLS_GD32: | |
1191 | tls_type = GOT_TLS_GD; | |
1192 | break; | |
1193 | case R_390_TLS_IE32: | |
1194 | case R_390_TLS_GOTIE32: | |
1195 | tls_type = GOT_TLS_IE; | |
1196 | break; | |
1197 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1198 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1199 | case R_390_TLS_IEENT: |
1200 | tls_type = GOT_TLS_IE_NLT; | |
1201 | break; | |
1202 | } | |
1203 | ||
1204 | if (h != NULL) | |
1205 | { | |
1206 | h->got.refcount += 1; | |
1207 | old_tls_type = elf_s390_hash_entry(h)->tls_type; | |
1208 | } | |
1209 | else | |
1210 | { | |
1211 | local_got_refcounts[r_symndx] += 1; | |
1212 | old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx]; | |
1213 | } | |
1214 | /* If a TLS symbol is accessed using IE at least once, | |
1215 | there is no point to use dynamic model for it. */ | |
1216 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN) | |
1217 | { | |
1218 | if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL) | |
1219 | { | |
1220 | (*_bfd_error_handler) | |
d003868e AM |
1221 | (_("%B: `%s' accessed both as normal and thread local symbol"), |
1222 | abfd, h->root.root.string); | |
69fc87f1 MS |
1223 | return FALSE; |
1224 | } | |
1225 | if (old_tls_type > tls_type) | |
1226 | tls_type = old_tls_type; | |
1227 | } | |
1228 | ||
1229 | if (old_tls_type != tls_type) | |
1230 | { | |
1231 | if (h != NULL) | |
1232 | elf_s390_hash_entry (h)->tls_type = tls_type; | |
1233 | else | |
1234 | elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1235 | } | |
1236 | ||
1237 | if (r_type != R_390_TLS_IE32) | |
1238 | break; | |
ae9a127f | 1239 | /* Fall through. */ |
69fc87f1 MS |
1240 | |
1241 | case R_390_TLS_LE32: | |
1242 | if (!info->shared) | |
1243 | break; | |
1244 | info->flags |= DF_STATIC_TLS; | |
ae9a127f | 1245 | /* Fall through. */ |
69fc87f1 | 1246 | |
26e41594 AM |
1247 | case R_390_8: |
1248 | case R_390_16: | |
a85d7ed0 | 1249 | case R_390_32: |
26e41594 AM |
1250 | case R_390_PC16: |
1251 | case R_390_PC16DBL: | |
befc3abb | 1252 | case R_390_PC32DBL: |
a85d7ed0 | 1253 | case R_390_PC32: |
470b557a | 1254 | if (h != NULL) |
0451c93c MS |
1255 | { |
1256 | /* If this reloc is in a read-only section, we might | |
1257 | need a copy reloc. We can't check reliably at this | |
1258 | stage whether the section is read-only, as input | |
1259 | sections have not yet been mapped to output sections. | |
1260 | Tentatively set the flag for now, and correct in | |
1261 | adjust_dynamic_symbol. */ | |
f5385ebf | 1262 | h->non_got_ref = 1; |
ec338859 | 1263 | |
470b557a AK |
1264 | if (!info->shared) |
1265 | { | |
1266 | /* We may need a .plt entry if the function this reloc | |
1267 | refers to is in a shared lib. */ | |
1268 | h->plt.refcount += 1; | |
1269 | } | |
0451c93c | 1270 | } |
a85d7ed0 NC |
1271 | |
1272 | /* If we are creating a shared library, and this is a reloc | |
0451c93c MS |
1273 | against a global symbol, or a non PC relative reloc |
1274 | against a local symbol, then we need to copy the reloc | |
1275 | into the shared library. However, if we are linking with | |
1276 | -Bsymbolic, we do not need to copy a reloc against a | |
1277 | global symbol which is defined in an object we are | |
1278 | including in the link (i.e., DEF_REGULAR is set). At | |
1279 | this point we have not seen all the input files, so it is | |
1280 | possible that DEF_REGULAR is not set now but will be set | |
1281 | later (it is never cleared). In case of a weak definition, | |
1282 | DEF_REGULAR may be cleared later by a strong definition in | |
1283 | a shared library. We account for that possibility below by | |
1284 | storing information in the relocs_copied field of the hash | |
1285 | table entry. A similar situation occurs when creating | |
1286 | shared libraries and symbol visibility changes render the | |
1287 | symbol local. | |
1288 | ||
1289 | If on the other hand, we are creating an executable, we | |
1290 | may need to keep relocations for symbols satisfied by a | |
1291 | dynamic library if we manage to avoid copy relocs for the | |
1292 | symbol. */ | |
1293 | if ((info->shared | |
1294 | && (sec->flags & SEC_ALLOC) != 0 | |
ec338859 | 1295 | && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16 |
0451c93c | 1296 | && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL |
befc3abb | 1297 | && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL |
0451c93c MS |
1298 | && ELF32_R_TYPE (rel->r_info) != R_390_PC32) |
1299 | || (h != NULL | |
8c21ca21 | 1300 | && (! SYMBOLIC_BIND (info, h) |
0451c93c | 1301 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1302 | || !h->def_regular)))) |
64285810 MS |
1303 | || (ELIMINATE_COPY_RELOCS |
1304 | && !info->shared | |
0451c93c MS |
1305 | && (sec->flags & SEC_ALLOC) != 0 |
1306 | && h != NULL | |
1307 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 1308 | || !h->def_regular))) |
a85d7ed0 | 1309 | { |
00d8c7a9 AK |
1310 | struct elf_dyn_relocs *p; |
1311 | struct elf_dyn_relocs **head; | |
ec338859 | 1312 | |
0451c93c MS |
1313 | /* We must copy these reloc types into the output file. |
1314 | Create a reloc section in dynobj and make room for | |
1315 | this reloc. */ | |
a85d7ed0 NC |
1316 | if (sreloc == NULL) |
1317 | { | |
0451c93c MS |
1318 | if (htab->elf.dynobj == NULL) |
1319 | htab->elf.dynobj = abfd; | |
a85d7ed0 | 1320 | |
83bac4b0 NC |
1321 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1322 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE); | |
1323 | ||
a85d7ed0 | 1324 | if (sreloc == NULL) |
83bac4b0 | 1325 | return FALSE; |
a85d7ed0 NC |
1326 | } |
1327 | ||
0451c93c MS |
1328 | /* If this is a global symbol, we count the number of |
1329 | relocations we need for this symbol. */ | |
1330 | if (h != NULL) | |
a85d7ed0 | 1331 | { |
ec338859 | 1332 | head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs; |
0451c93c MS |
1333 | } |
1334 | else | |
1335 | { | |
ec338859 AM |
1336 | /* Track dynamic relocs needed for local syms too. |
1337 | We really need local syms available to do this | |
1338 | easily. Oh well. */ | |
ec338859 | 1339 | asection *s; |
6edfbbad | 1340 | void *vpp; |
ae9a127f | 1341 | |
87d72d41 AM |
1342 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1343 | abfd, r_symndx); | |
1344 | if (isym == NULL) | |
b34976b6 | 1345 | return FALSE; |
ec338859 | 1346 | |
87d72d41 AM |
1347 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
1348 | if (s == NULL) | |
1349 | s = sec; | |
1350 | ||
6edfbbad | 1351 | vpp = &elf_section_data (s)->local_dynrel; |
00d8c7a9 | 1352 | head = (struct elf_dyn_relocs **) vpp; |
ec338859 AM |
1353 | } |
1354 | ||
1355 | p = *head; | |
1356 | if (p == NULL || p->sec != sec) | |
1357 | { | |
1358 | bfd_size_type amt = sizeof *p; | |
ae9a127f | 1359 | |
00d8c7a9 | 1360 | p = ((struct elf_dyn_relocs *) |
ec338859 AM |
1361 | bfd_alloc (htab->elf.dynobj, amt)); |
1362 | if (p == NULL) | |
b34976b6 | 1363 | return FALSE; |
ec338859 AM |
1364 | p->next = *head; |
1365 | *head = p; | |
1366 | p->sec = sec; | |
1367 | p->count = 0; | |
1368 | p->pc_count = 0; | |
a85d7ed0 | 1369 | } |
ec338859 AM |
1370 | |
1371 | p->count += 1; | |
1372 | if (ELF32_R_TYPE (rel->r_info) == R_390_PC16 | |
1373 | || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL | |
befc3abb | 1374 | || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL |
ec338859 AM |
1375 | || ELF32_R_TYPE (rel->r_info) == R_390_PC32) |
1376 | p->pc_count += 1; | |
a85d7ed0 | 1377 | } |
a85d7ed0 | 1378 | break; |
ec338859 | 1379 | |
a85d7ed0 NC |
1380 | /* This relocation describes the C++ object vtable hierarchy. |
1381 | Reconstruct it for later use during GC. */ | |
26e41594 | 1382 | case R_390_GNU_VTINHERIT: |
c152c796 | 1383 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
26e41594 AM |
1384 | return FALSE; |
1385 | break; | |
ec338859 | 1386 | |
a85d7ed0 NC |
1387 | /* This relocation describes which C++ vtable entries are actually |
1388 | used. Record for later use during GC. */ | |
26e41594 | 1389 | case R_390_GNU_VTENTRY: |
d17e0c6e JB |
1390 | BFD_ASSERT (h != NULL); |
1391 | if (h != NULL | |
1392 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
26e41594 AM |
1393 | return FALSE; |
1394 | break; | |
ec338859 | 1395 | |
a85d7ed0 NC |
1396 | default: |
1397 | break; | |
1398 | } | |
1399 | } | |
1400 | ||
b34976b6 | 1401 | return TRUE; |
a85d7ed0 NC |
1402 | } |
1403 | ||
1404 | /* Return the section that should be marked against GC for a given | |
1405 | relocation. */ | |
1406 | ||
1407 | static asection * | |
07adf181 AM |
1408 | elf_s390_gc_mark_hook (asection *sec, |
1409 | struct bfd_link_info *info, | |
1410 | Elf_Internal_Rela *rel, | |
1411 | struct elf_link_hash_entry *h, | |
1412 | Elf_Internal_Sym *sym) | |
a85d7ed0 NC |
1413 | { |
1414 | if (h != NULL) | |
07adf181 AM |
1415 | switch (ELF32_R_TYPE (rel->r_info)) |
1416 | { | |
1417 | case R_390_GNU_VTINHERIT: | |
1418 | case R_390_GNU_VTENTRY: | |
1419 | return NULL; | |
1420 | } | |
1421 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
a85d7ed0 | 1422 | |
a85d7ed0 NC |
1423 | } |
1424 | ||
1425 | /* Update the got entry reference counts for the section being removed. */ | |
1426 | ||
b34976b6 | 1427 | static bfd_boolean |
07adf181 AM |
1428 | elf_s390_gc_sweep_hook (bfd *abfd, |
1429 | struct bfd_link_info *info, | |
1430 | asection *sec, | |
1431 | const Elf_Internal_Rela *relocs) | |
a85d7ed0 | 1432 | { |
470b557a | 1433 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
1434 | Elf_Internal_Shdr *symtab_hdr; |
1435 | struct elf_link_hash_entry **sym_hashes; | |
1436 | bfd_signed_vma *local_got_refcounts; | |
1437 | const Elf_Internal_Rela *rel, *relend; | |
a85d7ed0 | 1438 | |
7dda2462 TG |
1439 | if (info->relocatable) |
1440 | return TRUE; | |
1441 | ||
470b557a AK |
1442 | htab = elf_s390_hash_table (info); |
1443 | if (htab == NULL) | |
1444 | return FALSE; | |
1445 | ||
ec338859 | 1446 | elf_section_data (sec)->local_dynrel = NULL; |
a85d7ed0 | 1447 | |
0ffa91dd | 1448 | symtab_hdr = &elf_symtab_hdr (abfd); |
0451c93c MS |
1449 | sym_hashes = elf_sym_hashes (abfd); |
1450 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
a85d7ed0 NC |
1451 | |
1452 | relend = relocs + sec->reloc_count; | |
1453 | for (rel = relocs; rel < relend; rel++) | |
5236c819 | 1454 | { |
26e41594 AM |
1455 | unsigned long r_symndx; |
1456 | unsigned int r_type; | |
1457 | struct elf_link_hash_entry *h = NULL; | |
1458 | ||
5236c819 | 1459 | r_symndx = ELF32_R_SYM (rel->r_info); |
26e41594 AM |
1460 | if (r_symndx >= symtab_hdr->sh_info) |
1461 | { | |
1462 | struct elf_s390_link_hash_entry *eh; | |
00d8c7a9 AK |
1463 | struct elf_dyn_relocs **pp; |
1464 | struct elf_dyn_relocs *p; | |
0451c93c | 1465 | |
26e41594 | 1466 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3eb128b2 AM |
1467 | while (h->root.type == bfd_link_hash_indirect |
1468 | || h->root.type == bfd_link_hash_warning) | |
1469 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
26e41594 | 1470 | eh = (struct elf_s390_link_hash_entry *) h; |
5236c819 | 1471 | |
26e41594 AM |
1472 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
1473 | if (p->sec == sec) | |
1474 | { | |
1475 | /* Everything must go for SEC. */ | |
1476 | *pp = p->next; | |
1477 | break; | |
1478 | } | |
1479 | } | |
470b557a AK |
1480 | else |
1481 | { | |
1482 | Elf_Internal_Sym *isym; | |
1483 | ||
1484 | /* A local symbol. */ | |
1485 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1486 | abfd, r_symndx); | |
1487 | if (isym == NULL) | |
1488 | return FALSE; | |
1489 | ||
1490 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
1491 | { | |
1492 | struct plt_entry *plt = elf_s390_local_plt (abfd); | |
1493 | if (plt[r_symndx].plt.refcount > 0) | |
1494 | plt[r_symndx].plt.refcount--; | |
1495 | } | |
1496 | } | |
26e41594 AM |
1497 | |
1498 | r_type = ELF32_R_TYPE (rel->r_info); | |
1499 | r_type = elf_s390_tls_transition (info, r_type, h != NULL); | |
69fc87f1 | 1500 | switch (r_type) |
5236c819 | 1501 | { |
69fc87f1 MS |
1502 | case R_390_TLS_LDM32: |
1503 | if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0) | |
1504 | elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1; | |
1505 | break; | |
1506 | ||
1507 | case R_390_TLS_GD32: | |
1508 | case R_390_TLS_IE32: | |
1509 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 1510 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
1511 | case R_390_TLS_GOTIE32: |
1512 | case R_390_TLS_IEENT: | |
5236c819 MS |
1513 | case R_390_GOT12: |
1514 | case R_390_GOT16: | |
bd1ea41b | 1515 | case R_390_GOT20: |
5236c819 MS |
1516 | case R_390_GOT32: |
1517 | case R_390_GOTOFF16: | |
1518 | case R_390_GOTOFF32: | |
1519 | case R_390_GOTPC: | |
1520 | case R_390_GOTPCDBL: | |
1521 | case R_390_GOTENT: | |
1522 | if (h != NULL) | |
1523 | { | |
1524 | if (h->got.refcount > 0) | |
1525 | h->got.refcount -= 1; | |
1526 | } | |
1527 | else if (local_got_refcounts != NULL) | |
1528 | { | |
1529 | if (local_got_refcounts[r_symndx] > 0) | |
1530 | local_got_refcounts[r_symndx] -= 1; | |
1531 | } | |
26e41594 | 1532 | break; |
a85d7ed0 | 1533 | |
5236c819 MS |
1534 | case R_390_8: |
1535 | case R_390_12: | |
1536 | case R_390_16: | |
bd1ea41b | 1537 | case R_390_20: |
5236c819 MS |
1538 | case R_390_32: |
1539 | case R_390_PC16: | |
1540 | case R_390_PC16DBL: | |
1541 | case R_390_PC32DBL: | |
1542 | case R_390_PC32: | |
26e41594 AM |
1543 | if (info->shared) |
1544 | break; | |
1545 | /* Fall through. */ | |
1546 | ||
69fc87f1 MS |
1547 | case R_390_PLT16DBL: |
1548 | case R_390_PLT32DBL: | |
1549 | case R_390_PLT32: | |
1550 | case R_390_PLTOFF16: | |
1551 | case R_390_PLTOFF32: | |
1552 | if (h != NULL) | |
1553 | { | |
1554 | if (h->plt.refcount > 0) | |
1555 | h->plt.refcount -= 1; | |
1556 | } | |
1557 | break; | |
1558 | ||
1559 | case R_390_GOTPLT12: | |
1560 | case R_390_GOTPLT16: | |
bd1ea41b | 1561 | case R_390_GOTPLT20: |
69fc87f1 MS |
1562 | case R_390_GOTPLT32: |
1563 | case R_390_GOTPLTENT: | |
1564 | if (h != NULL) | |
1565 | { | |
1566 | if (h->plt.refcount > 0) | |
1567 | { | |
1568 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--; | |
1569 | h->plt.refcount -= 1; | |
1570 | } | |
1571 | } | |
1572 | else if (local_got_refcounts != NULL) | |
1573 | { | |
1574 | if (local_got_refcounts[r_symndx] > 0) | |
1575 | local_got_refcounts[r_symndx] -= 1; | |
1576 | } | |
1577 | break; | |
1578 | ||
5236c819 MS |
1579 | default: |
1580 | break; | |
1581 | } | |
1582 | } | |
a85d7ed0 | 1583 | |
b34976b6 | 1584 | return TRUE; |
a85d7ed0 NC |
1585 | } |
1586 | ||
5236c819 MS |
1587 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
1588 | entry but we found we will not create any. Called when we find we will | |
1589 | not have any PLT for this symbol, by for example | |
1590 | elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
1591 | or elf_s390_size_dynamic_sections if no dynamic sections will be | |
1592 | created (we're only linking static objects). */ | |
1593 | ||
1594 | static void | |
2c3fc389 | 1595 | elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h) |
5236c819 MS |
1596 | { |
1597 | if (h->elf.root.type == bfd_link_hash_warning) | |
1598 | h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link; | |
1599 | ||
1600 | if (h->gotplt_refcount <= 0) | |
1601 | return; | |
1602 | ||
1603 | /* We simply add the number of gotplt references to the number | |
1604 | * of got references for this symbol. */ | |
1605 | h->elf.got.refcount += h->gotplt_refcount; | |
1606 | h->gotplt_refcount = -1; | |
1607 | } | |
1608 | ||
a85d7ed0 NC |
1609 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1610 | regular object. The current definition is in some section of the | |
1611 | dynamic object, but we're not including those sections. We have to | |
1612 | change the definition to something the rest of the link can | |
1613 | understand. */ | |
1614 | ||
b34976b6 | 1615 | static bfd_boolean |
2c3fc389 NC |
1616 | elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info, |
1617 | struct elf_link_hash_entry *h) | |
a85d7ed0 | 1618 | { |
0451c93c | 1619 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 | 1620 | asection *s; |
a85d7ed0 | 1621 | |
470b557a AK |
1622 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1623 | if (s390_is_ifunc_symbol_p (h)) | |
1624 | return TRUE; | |
1625 | ||
a85d7ed0 NC |
1626 | /* If this is a function, put it in the procedure linkage table. We |
1627 | will fill in the contents of the procedure linkage table later | |
cedb70c5 | 1628 | (although we could actually do it here). */ |
a85d7ed0 | 1629 | if (h->type == STT_FUNC |
f5385ebf | 1630 | || h->needs_plt) |
a85d7ed0 | 1631 | { |
0451c93c | 1632 | if (h->plt.refcount <= 0 |
8c21ca21 AK |
1633 | || SYMBOL_CALLS_LOCAL (info, h) |
1634 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1635 | && h->root.type != bfd_link_hash_undefweak)) | |
a85d7ed0 NC |
1636 | { |
1637 | /* This case can occur if we saw a PLT32 reloc in an input | |
26e41594 AM |
1638 | file, but the symbol was never referred to by a dynamic |
1639 | object, or if all references were garbage collected. In | |
a85d7ed0 NC |
1640 | such a case, we don't actually need to build a procedure |
1641 | linkage table, and we can just do a PC32 reloc instead. */ | |
1642 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1643 | h->needs_plt = 0; |
5236c819 | 1644 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
a85d7ed0 NC |
1645 | } |
1646 | ||
b34976b6 | 1647 | return TRUE; |
a85d7ed0 | 1648 | } |
bbd7ec4a | 1649 | else |
0451c93c MS |
1650 | /* It's possible that we incorrectly decided a .plt reloc was |
1651 | needed for an R_390_PC32 reloc to a non-function sym in | |
1652 | check_relocs. We can't decide accurately between function and | |
1653 | non-function syms in check-relocs; Objects loaded later in | |
1654 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1655 | h->plt.offset = (bfd_vma) -1; |
a85d7ed0 NC |
1656 | |
1657 | /* If this is a weak symbol, and there is a real definition, the | |
1658 | processor independent code will have arranged for us to see the | |
1659 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1660 | if (h->u.weakdef != NULL) |
a85d7ed0 | 1661 | { |
f6e332e6 AM |
1662 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1663 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1664 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1665 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
64285810 | 1666 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
f6e332e6 | 1667 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 1668 | return TRUE; |
a85d7ed0 NC |
1669 | } |
1670 | ||
1671 | /* This is a reference to a symbol defined by a dynamic object which | |
1672 | is not a function. */ | |
1673 | ||
1674 | /* If we are creating a shared library, we must presume that the | |
1675 | only references to the symbol are via the global offset table. | |
1676 | For such cases we need not do anything here; the relocations will | |
1677 | be handled correctly by relocate_section. */ | |
1678 | if (info->shared) | |
b34976b6 | 1679 | return TRUE; |
a85d7ed0 NC |
1680 | |
1681 | /* If there are no references to this symbol that do not use the | |
1682 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 1683 | if (!h->non_got_ref) |
b34976b6 | 1684 | return TRUE; |
a85d7ed0 | 1685 | |
0451c93c MS |
1686 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1687 | if (info->nocopyreloc) | |
1688 | { | |
f5385ebf | 1689 | h->non_got_ref = 0; |
b34976b6 | 1690 | return TRUE; |
0451c93c MS |
1691 | } |
1692 | ||
64285810 | 1693 | if (ELIMINATE_COPY_RELOCS) |
0451c93c | 1694 | { |
64285810 | 1695 | struct elf_s390_link_hash_entry * eh; |
00d8c7a9 | 1696 | struct elf_dyn_relocs *p; |
0451c93c | 1697 | |
64285810 MS |
1698 | eh = (struct elf_s390_link_hash_entry *) h; |
1699 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1700 | { | |
1701 | s = p->sec->output_section; | |
1702 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1703 | break; | |
1704 | } | |
1705 | ||
1706 | /* If we didn't find any dynamic relocs in read-only sections, then | |
1707 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1708 | if (p == NULL) | |
1709 | { | |
f5385ebf | 1710 | h->non_got_ref = 0; |
64285810 MS |
1711 | return TRUE; |
1712 | } | |
0451c93c MS |
1713 | } |
1714 | ||
a85d7ed0 NC |
1715 | /* We must allocate the symbol in our .dynbss section, which will |
1716 | become part of the .bss section of the executable. There will be | |
1717 | an entry for this symbol in the .dynsym section. The dynamic | |
1718 | object will contain position independent code, so all references | |
1719 | from the dynamic object to this symbol will go through the global | |
1720 | offset table. The dynamic linker will use the .dynsym entry to | |
1721 | determine the address it must put in the global offset table, so | |
1722 | both the dynamic object and the regular object will refer to the | |
1723 | same memory location for the variable. */ | |
1724 | ||
0451c93c | 1725 | htab = elf_s390_hash_table (info); |
a85d7ed0 | 1726 | |
0451c93c MS |
1727 | /* We must generate a R_390_COPY reloc to tell the dynamic linker to |
1728 | copy the initial value out of the dynamic object and into the | |
1729 | runtime process image. */ | |
1d7e9d18 | 1730 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
a85d7ed0 | 1731 | { |
eea6121a | 1732 | htab->srelbss->size += sizeof (Elf32_External_Rela); |
f5385ebf | 1733 | h->needs_copy = 1; |
a85d7ed0 NC |
1734 | } |
1735 | ||
0451c93c | 1736 | s = htab->sdynbss; |
a85d7ed0 | 1737 | |
027297b7 | 1738 | return _bfd_elf_adjust_dynamic_copy (h, s); |
a85d7ed0 NC |
1739 | } |
1740 | ||
0451c93c MS |
1741 | /* Allocate space in .plt, .got and associated reloc sections for |
1742 | dynamic relocs. */ | |
1743 | ||
b34976b6 | 1744 | static bfd_boolean |
2c3fc389 | 1745 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
0451c93c MS |
1746 | { |
1747 | struct bfd_link_info *info; | |
1748 | struct elf_s390_link_hash_table *htab; | |
470b557a | 1749 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h; |
00d8c7a9 | 1750 | struct elf_dyn_relocs *p; |
0451c93c | 1751 | |
e92d460e | 1752 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1753 | return TRUE; |
0451c93c MS |
1754 | |
1755 | info = (struct bfd_link_info *) inf; | |
1756 | htab = elf_s390_hash_table (info); | |
1757 | ||
470b557a AK |
1758 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
1759 | here if it is defined and referenced in a non-shared object. */ | |
1760 | if (s390_is_ifunc_symbol_p (h) && h->def_regular) | |
1761 | return s390_elf_allocate_ifunc_dyn_relocs (info, h, | |
1762 | &eh->dyn_relocs); | |
1763 | else if (htab->elf.dynamic_sections_created | |
1764 | && h->plt.refcount > 0) | |
0451c93c MS |
1765 | { |
1766 | /* Make sure this symbol is output as a dynamic symbol. | |
1767 | Undefined weak syms won't yet be marked as dynamic. */ | |
1768 | if (h->dynindx == -1 | |
f5385ebf | 1769 | && !h->forced_local) |
0451c93c | 1770 | { |
c152c796 | 1771 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1772 | return FALSE; |
0451c93c MS |
1773 | } |
1774 | ||
82058a73 | 1775 | if (info->shared |
4ec72bde | 1776 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
0451c93c | 1777 | { |
f41345a7 | 1778 | asection *s = htab->elf.splt; |
0451c93c MS |
1779 | |
1780 | /* If this is the first .plt entry, make room for the special | |
1781 | first entry. */ | |
eea6121a AM |
1782 | if (s->size == 0) |
1783 | s->size += PLT_FIRST_ENTRY_SIZE; | |
0451c93c | 1784 | |
eea6121a | 1785 | h->plt.offset = s->size; |
0451c93c MS |
1786 | |
1787 | /* If this symbol is not defined in a regular file, and we are | |
1788 | not generating a shared library, then set the symbol to this | |
1789 | location in the .plt. This is required to make function | |
1790 | pointers compare as equal between the normal executable and | |
1791 | the shared library. */ | |
1792 | if (! info->shared | |
f5385ebf | 1793 | && !h->def_regular) |
0451c93c MS |
1794 | { |
1795 | h->root.u.def.section = s; | |
1796 | h->root.u.def.value = h->plt.offset; | |
1797 | } | |
ec338859 | 1798 | |
0451c93c | 1799 | /* Make room for this entry. */ |
eea6121a | 1800 | s->size += PLT_ENTRY_SIZE; |
ec338859 | 1801 | |
0451c93c MS |
1802 | /* We also need to make an entry in the .got.plt section, which |
1803 | will be placed in the .got section by the linker script. */ | |
f41345a7 | 1804 | htab->elf.sgotplt->size += GOT_ENTRY_SIZE; |
0451c93c MS |
1805 | |
1806 | /* We also need to make an entry in the .rela.plt section. */ | |
f41345a7 | 1807 | htab->elf.srelplt->size += sizeof (Elf32_External_Rela); |
0451c93c MS |
1808 | } |
1809 | else | |
1810 | { | |
1811 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1812 | h->needs_plt = 0; |
5236c819 | 1813 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c | 1814 | } |
ec338859 | 1815 | } |
0451c93c MS |
1816 | else |
1817 | { | |
1818 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 1819 | h->needs_plt = 0; |
5236c819 | 1820 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
ec338859 AM |
1821 | } |
1822 | ||
69fc87f1 MS |
1823 | /* If R_390_TLS_{IE32,GOTIE32,GOTIE12,IEENT} symbol is now local to |
1824 | the binary, we can optimize a bit. IE32 and GOTIE32 get converted | |
1825 | to R_390_TLS_LE32 requiring no TLS entry. For GOTIE12 and IEENT | |
1826 | we can save the dynamic TLS relocation. */ | |
1827 | if (h->got.refcount > 0 | |
1828 | && !info->shared | |
1829 | && h->dynindx == -1 | |
1830 | && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE) | |
0451c93c | 1831 | { |
69fc87f1 MS |
1832 | if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT) |
1833 | /* For the GOTIE access without a literal pool entry the offset has | |
1834 | to be stored somewhere. The immediate value in the instruction | |
1835 | is not bit enough so the value is stored in the got. */ | |
1836 | { | |
f41345a7 AK |
1837 | h->got.offset = htab->elf.sgot->size; |
1838 | htab->elf.sgot->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1839 | } |
1840 | else | |
1841 | h->got.offset = (bfd_vma) -1; | |
1842 | } | |
1843 | else if (h->got.refcount > 0) | |
1844 | { | |
0451c93c | 1845 | asection *s; |
b34976b6 | 1846 | bfd_boolean dyn; |
69fc87f1 | 1847 | int tls_type = elf_s390_hash_entry(h)->tls_type; |
0451c93c MS |
1848 | |
1849 | /* Make sure this symbol is output as a dynamic symbol. | |
1850 | Undefined weak syms won't yet be marked as dynamic. */ | |
1851 | if (h->dynindx == -1 | |
f5385ebf | 1852 | && !h->forced_local) |
0451c93c | 1853 | { |
c152c796 | 1854 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1855 | return FALSE; |
0451c93c MS |
1856 | } |
1857 | ||
f41345a7 | 1858 | s = htab->elf.sgot; |
eea6121a AM |
1859 | h->got.offset = s->size; |
1860 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1861 | /* R_390_TLS_GD32 needs 2 consecutive GOT slots. */ |
1862 | if (tls_type == GOT_TLS_GD) | |
eea6121a | 1863 | s->size += GOT_ENTRY_SIZE; |
0451c93c | 1864 | dyn = htab->elf.dynamic_sections_created; |
69fc87f1 MS |
1865 | /* R_390_TLS_IE32 needs one dynamic relocation, |
1866 | R_390_TLS_GD32 needs one if local symbol and two if global. */ | |
1867 | if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1868 | || tls_type >= GOT_TLS_IE) | |
f41345a7 | 1869 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
69fc87f1 | 1870 | else if (tls_type == GOT_TLS_GD) |
f41345a7 | 1871 | htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela); |
82058a73 MS |
1872 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1873 | || h->root.type != bfd_link_hash_undefweak) | |
1874 | && (info->shared | |
1875 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
f41345a7 | 1876 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
0451c93c MS |
1877 | } |
1878 | else | |
1879 | h->got.offset = (bfd_vma) -1; | |
1880 | ||
0451c93c | 1881 | if (eh->dyn_relocs == NULL) |
b34976b6 | 1882 | return TRUE; |
0451c93c MS |
1883 | |
1884 | /* In the shared -Bsymbolic case, discard space allocated for | |
1885 | dynamic pc-relative relocs against symbols which turn out to be | |
1886 | defined in regular objects. For the normal shared case, discard | |
1887 | space for pc-relative relocs that have become local due to symbol | |
1888 | visibility changes. */ | |
1889 | ||
1890 | if (info->shared) | |
1891 | { | |
8c21ca21 | 1892 | if (SYMBOL_CALLS_LOCAL (info, h)) |
0451c93c | 1893 | { |
00d8c7a9 | 1894 | struct elf_dyn_relocs **pp; |
0451c93c MS |
1895 | |
1896 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1897 | { | |
1898 | p->count -= p->pc_count; | |
1899 | p->pc_count = 0; | |
1900 | if (p->count == 0) | |
1901 | *pp = p->next; | |
1902 | else | |
1903 | pp = &p->next; | |
1904 | } | |
1905 | } | |
82058a73 MS |
1906 | |
1907 | /* Also discard relocs on undefined weak syms with non-default | |
1908 | visibility. */ | |
22d606e9 | 1909 | if (eh->dyn_relocs != NULL |
82058a73 | 1910 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
1911 | { |
1912 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
1913 | eh->dyn_relocs = NULL; | |
1914 | ||
1915 | /* Make sure undefined weak symbols are output as a dynamic | |
1916 | symbol in PIEs. */ | |
1917 | else if (h->dynindx == -1 | |
1918 | && !h->forced_local) | |
1919 | { | |
1920 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1921 | return FALSE; | |
1922 | } | |
1923 | } | |
0451c93c | 1924 | } |
64285810 | 1925 | else if (ELIMINATE_COPY_RELOCS) |
0451c93c MS |
1926 | { |
1927 | /* For the non-shared case, discard space for relocs against | |
1928 | symbols which turn out to need copy relocs or are not | |
1929 | dynamic. */ | |
1930 | ||
f5385ebf AM |
1931 | if (!h->non_got_ref |
1932 | && ((h->def_dynamic | |
1933 | && !h->def_regular) | |
0451c93c MS |
1934 | || (htab->elf.dynamic_sections_created |
1935 | && (h->root.type == bfd_link_hash_undefweak | |
1936 | || h->root.type == bfd_link_hash_undefined)))) | |
1937 | { | |
1938 | /* Make sure this symbol is output as a dynamic symbol. | |
1939 | Undefined weak syms won't yet be marked as dynamic. */ | |
1940 | if (h->dynindx == -1 | |
f5385ebf | 1941 | && !h->forced_local) |
0451c93c | 1942 | { |
c152c796 | 1943 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1944 | return FALSE; |
0451c93c MS |
1945 | } |
1946 | ||
1947 | /* If that succeeded, we know we'll be keeping all the | |
1948 | relocs. */ | |
1949 | if (h->dynindx != -1) | |
1950 | goto keep; | |
1951 | } | |
1952 | ||
1953 | eh->dyn_relocs = NULL; | |
1954 | ||
ec338859 | 1955 | keep: ; |
0451c93c MS |
1956 | } |
1957 | ||
1958 | /* Finally, allocate space. */ | |
1959 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1960 | { | |
1961 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
ae9a127f | 1962 | |
eea6121a | 1963 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
0451c93c MS |
1964 | } |
1965 | ||
b34976b6 | 1966 | return TRUE; |
0451c93c MS |
1967 | } |
1968 | ||
1969 | /* Find any dynamic relocs that apply to read-only sections. */ | |
1970 | ||
b34976b6 | 1971 | static bfd_boolean |
2c3fc389 | 1972 | readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
0451c93c MS |
1973 | { |
1974 | struct elf_s390_link_hash_entry *eh; | |
00d8c7a9 | 1975 | struct elf_dyn_relocs *p; |
0451c93c MS |
1976 | |
1977 | eh = (struct elf_s390_link_hash_entry *) h; | |
1978 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1979 | { | |
1980 | asection *s = p->sec->output_section; | |
1981 | ||
1982 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1983 | { | |
1984 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
1985 | ||
1986 | info->flags |= DF_TEXTREL; | |
1987 | ||
1988 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 1989 | return FALSE; |
0451c93c MS |
1990 | } |
1991 | } | |
b34976b6 | 1992 | return TRUE; |
0451c93c MS |
1993 | } |
1994 | ||
a85d7ed0 NC |
1995 | /* Set the sizes of the dynamic sections. */ |
1996 | ||
b34976b6 | 1997 | static bfd_boolean |
2c3fc389 NC |
1998 | elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
1999 | struct bfd_link_info *info) | |
a85d7ed0 | 2000 | { |
0451c93c | 2001 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
2002 | bfd *dynobj; |
2003 | asection *s; | |
b34976b6 | 2004 | bfd_boolean relocs; |
0451c93c | 2005 | bfd *ibfd; |
a85d7ed0 | 2006 | |
0451c93c MS |
2007 | htab = elf_s390_hash_table (info); |
2008 | dynobj = htab->elf.dynobj; | |
2009 | if (dynobj == NULL) | |
2010 | abort (); | |
a85d7ed0 | 2011 | |
0451c93c | 2012 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
2013 | { |
2014 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 2015 | if (info->executable) |
a85d7ed0 | 2016 | { |
3d4d4302 | 2017 | s = bfd_get_linker_section (dynobj, ".interp"); |
0451c93c MS |
2018 | if (s == NULL) |
2019 | abort (); | |
eea6121a | 2020 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
a85d7ed0 NC |
2021 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
2022 | } | |
2023 | } | |
a85d7ed0 | 2024 | |
0451c93c MS |
2025 | /* Set up .got offsets for local syms, and space for local dynamic |
2026 | relocs. */ | |
2027 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
a85d7ed0 | 2028 | { |
0451c93c MS |
2029 | bfd_signed_vma *local_got; |
2030 | bfd_signed_vma *end_local_got; | |
69fc87f1 | 2031 | char *local_tls_type; |
0451c93c MS |
2032 | bfd_size_type locsymcount; |
2033 | Elf_Internal_Shdr *symtab_hdr; | |
2034 | asection *srela; | |
470b557a AK |
2035 | struct plt_entry *local_plt; |
2036 | unsigned int i; | |
a85d7ed0 | 2037 | |
0ffa91dd | 2038 | if (! is_s390_elf (ibfd)) |
a85d7ed0 NC |
2039 | continue; |
2040 | ||
0451c93c | 2041 | for (s = ibfd->sections; s != NULL; s = s->next) |
a85d7ed0 | 2042 | { |
00d8c7a9 | 2043 | struct elf_dyn_relocs *p; |
0451c93c | 2044 | |
6edfbbad | 2045 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
a85d7ed0 | 2046 | { |
ec338859 AM |
2047 | if (!bfd_is_abs_section (p->sec) |
2048 | && bfd_is_abs_section (p->sec->output_section)) | |
2049 | { | |
2050 | /* Input section has been discarded, either because | |
2051 | it is a copy of a linkonce section or due to | |
2052 | linker script /DISCARD/, so we'll be discarding | |
2053 | the relocs too. */ | |
2054 | } | |
248866a8 | 2055 | else if (p->count != 0) |
ec338859 AM |
2056 | { |
2057 | srela = elf_section_data (p->sec)->sreloc; | |
eea6121a | 2058 | srela->size += p->count * sizeof (Elf32_External_Rela); |
248866a8 AM |
2059 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
2060 | info->flags |= DF_TEXTREL; | |
ec338859 | 2061 | } |
a85d7ed0 NC |
2062 | } |
2063 | } | |
0451c93c MS |
2064 | |
2065 | local_got = elf_local_got_refcounts (ibfd); | |
2066 | if (!local_got) | |
2067 | continue; | |
2068 | ||
0ffa91dd | 2069 | symtab_hdr = &elf_symtab_hdr (ibfd); |
0451c93c MS |
2070 | locsymcount = symtab_hdr->sh_info; |
2071 | end_local_got = local_got + locsymcount; | |
69fc87f1 | 2072 | local_tls_type = elf_s390_local_got_tls_type (ibfd); |
f41345a7 AK |
2073 | s = htab->elf.sgot; |
2074 | srela = htab->elf.srelgot; | |
69fc87f1 | 2075 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
a85d7ed0 | 2076 | { |
0451c93c | 2077 | if (*local_got > 0) |
a85d7ed0 | 2078 | { |
eea6121a AM |
2079 | *local_got = s->size; |
2080 | s->size += GOT_ENTRY_SIZE; | |
69fc87f1 | 2081 | if (*local_tls_type == GOT_TLS_GD) |
eea6121a | 2082 | s->size += GOT_ENTRY_SIZE; |
0451c93c | 2083 | if (info->shared) |
eea6121a | 2084 | srela->size += sizeof (Elf32_External_Rela); |
a85d7ed0 NC |
2085 | } |
2086 | else | |
0451c93c MS |
2087 | *local_got = (bfd_vma) -1; |
2088 | } | |
470b557a AK |
2089 | local_plt = elf_s390_local_plt (ibfd); |
2090 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
2091 | { | |
2092 | if (local_plt[i].plt.refcount > 0) | |
2093 | { | |
2094 | local_plt[i].plt.offset = htab->elf.iplt->size; | |
2095 | htab->elf.iplt->size += PLT_ENTRY_SIZE; | |
2096 | htab->elf.igotplt->size += GOT_ENTRY_SIZE; | |
2097 | htab->elf.irelplt->size += RELA_ENTRY_SIZE; | |
2098 | } | |
2099 | else | |
2100 | local_plt[i].plt.offset = (bfd_vma) -1; | |
2101 | } | |
0451c93c MS |
2102 | } |
2103 | ||
69fc87f1 MS |
2104 | if (htab->tls_ldm_got.refcount > 0) |
2105 | { | |
2106 | /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM32 | |
2107 | relocs. */ | |
f41345a7 AK |
2108 | htab->tls_ldm_got.offset = htab->elf.sgot->size; |
2109 | htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE; | |
2110 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); | |
69fc87f1 MS |
2111 | } |
2112 | else | |
2113 | htab->tls_ldm_got.offset = -1; | |
2114 | ||
0451c93c MS |
2115 | /* Allocate global sym .plt and .got entries, and space for global |
2116 | sym dynamic relocs. */ | |
2c3fc389 | 2117 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
0451c93c MS |
2118 | |
2119 | /* We now have determined the sizes of the various dynamic sections. | |
2120 | Allocate memory for them. */ | |
b34976b6 | 2121 | relocs = FALSE; |
0451c93c MS |
2122 | for (s = dynobj->sections; s != NULL; s = s->next) |
2123 | { | |
2124 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2125 | continue; | |
2126 | ||
f41345a7 AK |
2127 | if (s == htab->elf.splt |
2128 | || s == htab->elf.sgot | |
2129 | || s == htab->elf.sgotplt | |
470b557a AK |
2130 | || s == htab->sdynbss |
2131 | || s == htab->elf.iplt | |
2132 | || s == htab->elf.igotplt | |
2133 | || s == htab->irelifunc) | |
0451c93c MS |
2134 | { |
2135 | /* Strip this section if we don't need it; see the | |
2136 | comment below. */ | |
a85d7ed0 | 2137 | } |
0112cd26 | 2138 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
0451c93c | 2139 | { |
eea6121a | 2140 | if (s->size != 0) |
b34976b6 | 2141 | relocs = TRUE; |
ec338859 | 2142 | |
0451c93c MS |
2143 | /* We use the reloc_count field as a counter if we need |
2144 | to copy relocs into the output file. */ | |
2145 | s->reloc_count = 0; | |
2146 | } | |
2147 | else | |
a85d7ed0 NC |
2148 | { |
2149 | /* It's not one of our sections, so don't allocate space. */ | |
2150 | continue; | |
2151 | } | |
2152 | ||
eea6121a | 2153 | if (s->size == 0) |
a85d7ed0 | 2154 | { |
0451c93c MS |
2155 | /* If we don't need this section, strip it from the |
2156 | output file. This is to handle .rela.bss and | |
2157 | .rela.plt. We must create it in | |
2158 | create_dynamic_sections, because it must be created | |
2159 | before the linker maps input sections to output | |
2160 | sections. The linker does that before | |
2161 | adjust_dynamic_symbol is called, and it is that | |
2162 | function which decides whether anything needs to go | |
2163 | into these sections. */ | |
2164 | ||
8423293d | 2165 | s->flags |= SEC_EXCLUDE; |
a85d7ed0 NC |
2166 | continue; |
2167 | } | |
2168 | ||
c456f082 AM |
2169 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2170 | continue; | |
2171 | ||
0451c93c MS |
2172 | /* Allocate memory for the section contents. We use bfd_zalloc |
2173 | here in case unused entries are not reclaimed before the | |
2174 | section's contents are written out. This should not happen, | |
2175 | but this way if it does, we get a R_390_NONE reloc instead | |
2176 | of garbage. */ | |
eea6121a | 2177 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
0451c93c | 2178 | if (s->contents == NULL) |
b34976b6 | 2179 | return FALSE; |
a85d7ed0 | 2180 | } |
ec338859 | 2181 | |
0451c93c | 2182 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
2183 | { |
2184 | /* Add some entries to the .dynamic section. We fill in the | |
2185 | values later, in elf_s390_finish_dynamic_sections, but we | |
2186 | must add the entries now so that we get the correct size for | |
2187 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2188 | dynamic linker and used by the debugger. */ | |
dc810e39 | 2189 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2190 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
ec338859 | 2191 | |
36af4a4e | 2192 | if (info->executable) |
a85d7ed0 | 2193 | { |
dc810e39 | 2194 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2195 | return FALSE; |
a85d7ed0 | 2196 | } |
ec338859 | 2197 | |
f41345a7 | 2198 | if (htab->elf.splt->size != 0) |
a85d7ed0 | 2199 | { |
dc810e39 AM |
2200 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2201 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2202 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2203 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2204 | return FALSE; |
a85d7ed0 | 2205 | } |
ec338859 | 2206 | |
a85d7ed0 | 2207 | if (relocs) |
26e41594 AM |
2208 | { |
2209 | if (!add_dynamic_entry (DT_RELA, 0) | |
2210 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2211 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 2212 | return FALSE; |
a85d7ed0 | 2213 | |
0451c93c MS |
2214 | /* If any dynamic relocs apply to a read-only section, |
2215 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 2216 | if ((info->flags & DF_TEXTREL) == 0) |
2c3fc389 | 2217 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
ec338859 | 2218 | |
0451c93c MS |
2219 | if ((info->flags & DF_TEXTREL) != 0) |
2220 | { | |
2221 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2222 | return FALSE; |
0451c93c | 2223 | } |
a85d7ed0 NC |
2224 | } |
2225 | } | |
dc810e39 | 2226 | #undef add_dynamic_entry |
ec338859 | 2227 | |
b34976b6 | 2228 | return TRUE; |
a85d7ed0 NC |
2229 | } |
2230 | ||
69fc87f1 MS |
2231 | /* Return the base VMA address which should be subtracted from real addresses |
2232 | when resolving @dtpoff relocation. | |
2233 | This is PT_TLS segment p_vaddr. */ | |
2234 | ||
2235 | static bfd_vma | |
2c3fc389 | 2236 | dtpoff_base (struct bfd_link_info *info) |
69fc87f1 | 2237 | { |
e1918d23 AM |
2238 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2239 | if (elf_hash_table (info)->tls_sec == NULL) | |
69fc87f1 | 2240 | return 0; |
e1918d23 | 2241 | return elf_hash_table (info)->tls_sec->vma; |
69fc87f1 MS |
2242 | } |
2243 | ||
2244 | /* Return the relocation value for @tpoff relocation | |
2245 | if STT_TLS virtual address is ADDRESS. */ | |
2246 | ||
2247 | static bfd_vma | |
2c3fc389 | 2248 | tpoff (struct bfd_link_info *info, bfd_vma address) |
69fc87f1 | 2249 | { |
e1918d23 | 2250 | struct elf_link_hash_table *htab = elf_hash_table (info); |
69fc87f1 | 2251 | |
e1918d23 AM |
2252 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2253 | if (htab->tls_sec == NULL) | |
69fc87f1 | 2254 | return 0; |
e1918d23 | 2255 | return htab->tls_size + htab->tls_sec->vma - address; |
69fc87f1 MS |
2256 | } |
2257 | ||
2258 | /* Complain if TLS instruction relocation is against an invalid | |
2259 | instruction. */ | |
2260 | ||
2261 | static void | |
2c3fc389 NC |
2262 | invalid_tls_insn (bfd *input_bfd, |
2263 | asection *input_section, | |
2264 | Elf_Internal_Rela *rel) | |
69fc87f1 MS |
2265 | { |
2266 | reloc_howto_type *howto; | |
2267 | ||
2268 | howto = elf_howto_table + ELF32_R_TYPE (rel->r_info); | |
2269 | (*_bfd_error_handler) | |
d003868e AM |
2270 | (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"), |
2271 | input_bfd, | |
2272 | input_section, | |
69fc87f1 MS |
2273 | (long) rel->r_offset, |
2274 | howto->name); | |
77df2968 | 2275 | bfd_set_error (bfd_error_bad_value); |
69fc87f1 MS |
2276 | } |
2277 | ||
a85d7ed0 NC |
2278 | /* Relocate a 390 ELF section. */ |
2279 | ||
b34976b6 | 2280 | static bfd_boolean |
2c3fc389 NC |
2281 | elf_s390_relocate_section (bfd *output_bfd, |
2282 | struct bfd_link_info *info, | |
2283 | bfd *input_bfd, | |
2284 | asection *input_section, | |
2285 | bfd_byte *contents, | |
2286 | Elf_Internal_Rela *relocs, | |
2287 | Elf_Internal_Sym *local_syms, | |
2288 | asection **local_sections) | |
a85d7ed0 | 2289 | { |
0451c93c | 2290 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
2291 | Elf_Internal_Shdr *symtab_hdr; |
2292 | struct elf_link_hash_entry **sym_hashes; | |
2293 | bfd_vma *local_got_offsets; | |
a85d7ed0 NC |
2294 | Elf_Internal_Rela *rel; |
2295 | Elf_Internal_Rela *relend; | |
2296 | ||
0ffa91dd NC |
2297 | BFD_ASSERT (is_s390_elf (input_bfd)); |
2298 | ||
0451c93c | 2299 | htab = elf_s390_hash_table (info); |
0ffa91dd | 2300 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
a85d7ed0 NC |
2301 | sym_hashes = elf_sym_hashes (input_bfd); |
2302 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2303 | ||
a85d7ed0 NC |
2304 | rel = relocs; |
2305 | relend = relocs + input_section->reloc_count; | |
2306 | for (; rel < relend; rel++) | |
2307 | { | |
5236c819 | 2308 | unsigned int r_type; |
a85d7ed0 NC |
2309 | reloc_howto_type *howto; |
2310 | unsigned long r_symndx; | |
2311 | struct elf_link_hash_entry *h; | |
2312 | Elf_Internal_Sym *sym; | |
2313 | asection *sec; | |
0451c93c | 2314 | bfd_vma off; |
a85d7ed0 | 2315 | bfd_vma relocation; |
b34976b6 | 2316 | bfd_boolean unresolved_reloc; |
a85d7ed0 | 2317 | bfd_reloc_status_type r; |
69fc87f1 | 2318 | int tls_type; |
470b557a | 2319 | asection *base_got = htab->elf.sgot; |
ec338859 | 2320 | |
a85d7ed0 NC |
2321 | r_type = ELF32_R_TYPE (rel->r_info); |
2322 | if (r_type == (int) R_390_GNU_VTINHERIT | |
26e41594 AM |
2323 | || r_type == (int) R_390_GNU_VTENTRY) |
2324 | continue; | |
5236c819 | 2325 | if (r_type >= (int) R_390_max) |
a85d7ed0 NC |
2326 | { |
2327 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2328 | return FALSE; |
a85d7ed0 | 2329 | } |
ec338859 | 2330 | |
b491616a | 2331 | howto = elf_howto_table + r_type; |
a85d7ed0 | 2332 | r_symndx = ELF32_R_SYM (rel->r_info); |
5236c819 | 2333 | |
a85d7ed0 NC |
2334 | h = NULL; |
2335 | sym = NULL; | |
2336 | sec = NULL; | |
b34976b6 | 2337 | unresolved_reloc = FALSE; |
a85d7ed0 NC |
2338 | if (r_symndx < symtab_hdr->sh_info) |
2339 | { | |
2340 | sym = local_syms + r_symndx; | |
2341 | sec = local_sections[r_symndx]; | |
470b557a AK |
2342 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
2343 | { | |
2344 | struct plt_entry *local_plt = elf_s390_local_plt (input_bfd); | |
2345 | if (local_plt == NULL) | |
2346 | return FALSE; | |
2347 | ||
2348 | /* Address of the PLT slot. */ | |
2349 | relocation = (htab->elf.iplt->output_section->vma | |
2350 | + htab->elf.iplt->output_offset | |
2351 | + local_plt[r_symndx].plt.offset); | |
2352 | ||
2353 | switch (r_type) | |
2354 | { | |
31db78f6 AK |
2355 | case R_390_PLTOFF16: |
2356 | case R_390_PLTOFF32: | |
2357 | relocation -= htab->elf.sgot->output_section->vma; | |
2358 | break; | |
470b557a AK |
2359 | case R_390_GOTPLT12: |
2360 | case R_390_GOTPLT16: | |
2361 | case R_390_GOTPLT20: | |
2362 | case R_390_GOTPLT32: | |
2363 | case R_390_GOTPLTENT: | |
2364 | case R_390_GOT12: | |
2365 | case R_390_GOT16: | |
2366 | case R_390_GOT20: | |
2367 | case R_390_GOT32: | |
2368 | case R_390_GOTENT: | |
2369 | { | |
2370 | /* Write the PLT slot address into the GOT slot. */ | |
2371 | bfd_put_32 (output_bfd, relocation, | |
2372 | htab->elf.sgot->contents + | |
2373 | local_got_offsets[r_symndx]); | |
2374 | relocation = (local_got_offsets[r_symndx] + | |
2375 | htab->elf.sgot->output_offset); | |
2376 | ||
2377 | if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT) | |
2378 | relocation += htab->elf.sgot->output_section->vma; | |
2379 | break; | |
2380 | } | |
2381 | default: | |
2382 | break; | |
2383 | } | |
2384 | /* The output section is needed later in | |
2385 | finish_dynamic_section when creating the dynamic | |
2386 | relocation. */ | |
2387 | local_plt[r_symndx].sec = sec; | |
2388 | goto do_relocation; | |
2389 | } | |
2390 | else | |
2391 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
a85d7ed0 NC |
2392 | } |
2393 | else | |
2394 | { | |
560e09e9 | 2395 | bfd_boolean warned ATTRIBUTE_UNUSED; |
ec338859 | 2396 | |
b2a8e766 AM |
2397 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2398 | r_symndx, symtab_hdr, sym_hashes, | |
2399 | h, sec, relocation, | |
2400 | unresolved_reloc, warned); | |
a85d7ed0 | 2401 | } |
ec338859 | 2402 | |
dbaa2011 | 2403 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 2404 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 2405 | rel, 1, relend, howto, 0, contents); |
ab96bf03 AM |
2406 | |
2407 | if (info->relocatable) | |
2408 | continue; | |
2409 | ||
a85d7ed0 NC |
2410 | switch (r_type) |
2411 | { | |
5236c819 MS |
2412 | case R_390_GOTPLT12: |
2413 | case R_390_GOTPLT16: | |
bd1ea41b | 2414 | case R_390_GOTPLT20: |
5236c819 MS |
2415 | case R_390_GOTPLT32: |
2416 | case R_390_GOTPLTENT: | |
2417 | /* There are three cases for a GOTPLT relocation. 1) The | |
2418 | relocation is against the jump slot entry of a plt that | |
2419 | will get emitted to the output file. 2) The relocation | |
2420 | is against the jump slot of a plt entry that has been | |
2421 | removed. elf_s390_adjust_gotplt has created a GOT entry | |
2422 | as replacement. 3) The relocation is against a local symbol. | |
2423 | Cases 2) and 3) are the same as the GOT relocation code | |
2424 | so we just have to test for case 1 and fall through for | |
2425 | the other two. */ | |
2426 | if (h != NULL && h->plt.offset != (bfd_vma) -1) | |
2427 | { | |
2428 | bfd_vma plt_index; | |
2429 | ||
470b557a AK |
2430 | if (s390_is_ifunc_symbol_p (h)) |
2431 | { | |
2432 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; | |
2433 | relocation = (plt_index * GOT_ENTRY_SIZE + | |
2434 | htab->elf.igotplt->output_offset); | |
2435 | if (r_type == R_390_GOTPLTENT) | |
2436 | relocation += htab->elf.igotplt->output_section->vma; | |
2437 | } | |
2438 | else | |
2439 | { | |
2440 | /* Calc. index no. | |
2441 | Current offset - size first entry / entry size. */ | |
2442 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / | |
2443 | PLT_ENTRY_SIZE; | |
2444 | ||
2445 | /* Offset in GOT is PLT index plus GOT headers(3) | |
2446 | times 4, addr & GOT addr. */ | |
2447 | relocation = (plt_index + 3) * GOT_ENTRY_SIZE; | |
2448 | if (r_type == R_390_GOTPLTENT) | |
2449 | relocation += htab->elf.sgot->output_section->vma; | |
2450 | } | |
5236c819 MS |
2451 | unresolved_reloc = FALSE; |
2452 | ||
5236c819 MS |
2453 | } |
2454 | /* Fall through. */ | |
2455 | ||
26e41594 AM |
2456 | case R_390_GOT12: |
2457 | case R_390_GOT16: | |
bd1ea41b | 2458 | case R_390_GOT20: |
26e41594 | 2459 | case R_390_GOT32: |
befc3abb | 2460 | case R_390_GOTENT: |
26e41594 AM |
2461 | /* Relocation is to the entry for this symbol in the global |
2462 | offset table. */ | |
470b557a | 2463 | if (base_got == NULL) |
0451c93c | 2464 | abort (); |
ec338859 | 2465 | |
26e41594 AM |
2466 | if (h != NULL) |
2467 | { | |
b34976b6 | 2468 | bfd_boolean dyn; |
ec338859 | 2469 | |
26e41594 | 2470 | off = h->got.offset; |
0451c93c | 2471 | dyn = htab->elf.dynamic_sections_created; |
470b557a AK |
2472 | |
2473 | if (s390_is_ifunc_symbol_p (h)) | |
2474 | { | |
2475 | BFD_ASSERT (h->plt.offset != (bfd_vma) -1); | |
2476 | if (off == (bfd_vma)-1) | |
2477 | { | |
2478 | /* No explicit GOT usage so redirect to the | |
2479 | got.iplt slot. */ | |
2480 | base_got = htab->elf.igotplt; | |
2481 | off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE; | |
2482 | } | |
2483 | else | |
2484 | { | |
2485 | /* Explicit GOT slots must contain the address | |
2486 | of the PLT slot. This will be handled in | |
2487 | finish_dynamic_symbol. */ | |
2488 | } | |
2489 | } | |
2490 | else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
2491 | || (info->shared | |
2492 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
2493 | || (ELF_ST_VISIBILITY (h->other) | |
2494 | && h->root.type == bfd_link_hash_undefweak)) | |
2495 | ||
26e41594 AM |
2496 | { |
2497 | /* This is actually a static link, or it is a | |
2498 | -Bsymbolic link and the symbol is defined | |
2499 | locally, or the symbol was forced to be local | |
2500 | because of a version file. We must initialize | |
2501 | this entry in the global offset table. Since the | |
2502 | offset must always be a multiple of 2, we use the | |
2503 | least significant bit to record whether we have | |
2504 | initialized it already. | |
2505 | ||
2506 | When doing a dynamic link, we create a .rel.got | |
2507 | relocation entry to initialize the value. This | |
2508 | is done in the finish_dynamic_symbol routine. */ | |
2509 | if ((off & 1) != 0) | |
2510 | off &= ~1; | |
2511 | else | |
2512 | { | |
a85d7ed0 | 2513 | bfd_put_32 (output_bfd, relocation, |
470b557a | 2514 | base_got->contents + off); |
26e41594 AM |
2515 | h->got.offset |= 1; |
2516 | } | |
2517 | } | |
0451c93c | 2518 | else |
b34976b6 | 2519 | unresolved_reloc = FALSE; |
26e41594 AM |
2520 | } |
2521 | else | |
2522 | { | |
0451c93c MS |
2523 | if (local_got_offsets == NULL) |
2524 | abort (); | |
a85d7ed0 | 2525 | |
26e41594 | 2526 | off = local_got_offsets[r_symndx]; |
a85d7ed0 | 2527 | |
26e41594 AM |
2528 | /* The offset must always be a multiple of 4. We use |
2529 | the least significant bit to record whether we have | |
2530 | already generated the necessary reloc. */ | |
2531 | if ((off & 1) != 0) | |
2532 | off &= ~1; | |
2533 | else | |
2534 | { | |
2535 | bfd_put_32 (output_bfd, relocation, | |
f41345a7 | 2536 | htab->elf.sgot->contents + off); |
a85d7ed0 | 2537 | |
26e41594 AM |
2538 | if (info->shared) |
2539 | { | |
2540 | asection *srelgot; | |
2541 | Elf_Internal_Rela outrel; | |
947216bf | 2542 | bfd_byte *loc; |
a85d7ed0 | 2543 | |
f41345a7 | 2544 | srelgot = htab->elf.srelgot; |
0451c93c MS |
2545 | if (srelgot == NULL) |
2546 | abort (); | |
a85d7ed0 | 2547 | |
f41345a7 AK |
2548 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2549 | + htab->elf.sgot->output_offset | |
26e41594 AM |
2550 | + off); |
2551 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
a85d7ed0 | 2552 | outrel.r_addend = relocation; |
947216bf AM |
2553 | loc = srelgot->contents; |
2554 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
26e41594 AM |
2555 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
2556 | } | |
a85d7ed0 | 2557 | |
26e41594 AM |
2558 | local_got_offsets[r_symndx] |= 1; |
2559 | } | |
2560 | } | |
a85d7ed0 | 2561 | |
0451c93c MS |
2562 | if (off >= (bfd_vma) -2) |
2563 | abort (); | |
a85d7ed0 | 2564 | |
470b557a | 2565 | relocation = base_got->output_offset + off; |
befc3abb | 2566 | |
ae9a127f NC |
2567 | /* For @GOTENT the relocation is against the offset between |
2568 | the instruction and the symbols entry in the GOT and not | |
2569 | between the start of the GOT and the symbols entry. We | |
2570 | add the vma of the GOT to get the correct value. */ | |
5236c819 MS |
2571 | if ( r_type == R_390_GOTENT |
2572 | || r_type == R_390_GOTPLTENT) | |
470b557a | 2573 | relocation += base_got->output_section->vma; |
befc3abb | 2574 | |
26e41594 | 2575 | break; |
dc810e39 | 2576 | |
5236c819 | 2577 | case R_390_GOTOFF16: |
26e41594 AM |
2578 | case R_390_GOTOFF32: |
2579 | /* Relocation is relative to the start of the global offset | |
2580 | table. */ | |
2581 | ||
2582 | /* Note that sgot->output_offset is not involved in this | |
2583 | calculation. We always want the start of .got. If we | |
2584 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
2585 | permitted by the ABI, we might have to change this | |
2586 | calculation. */ | |
f41345a7 | 2587 | relocation -= htab->elf.sgot->output_section->vma; |
26e41594 AM |
2588 | break; |
2589 | ||
2590 | case R_390_GOTPC: | |
befc3abb | 2591 | case R_390_GOTPCDBL: |
26e41594 | 2592 | /* Use global offset table as symbol value. */ |
f41345a7 | 2593 | relocation = htab->elf.sgot->output_section->vma; |
b34976b6 | 2594 | unresolved_reloc = FALSE; |
26e41594 | 2595 | break; |
a85d7ed0 | 2596 | |
26e41594 AM |
2597 | case R_390_PLT16DBL: |
2598 | case R_390_PLT32DBL: | |
2599 | case R_390_PLT32: | |
2600 | /* Relocation is to the entry for this symbol in the | |
2601 | procedure linkage table. */ | |
a85d7ed0 | 2602 | |
26e41594 AM |
2603 | /* Resolve a PLT32 reloc against a local symbol directly, |
2604 | without using the procedure linkage table. */ | |
2605 | if (h == NULL) | |
2606 | break; | |
a85d7ed0 | 2607 | |
26e41594 | 2608 | if (h->plt.offset == (bfd_vma) -1 |
470b557a | 2609 | || (htab->elf.splt == NULL && htab->elf.iplt == NULL)) |
26e41594 AM |
2610 | { |
2611 | /* We didn't make a PLT entry for this symbol. This | |
2612 | happens when statically linking PIC code, or when | |
2613 | using -Bsymbolic. */ | |
2614 | break; | |
2615 | } | |
2616 | ||
470b557a AK |
2617 | if (s390_is_ifunc_symbol_p (h)) |
2618 | relocation = (htab->elf.iplt->output_section->vma | |
2619 | + htab->elf.iplt->output_offset | |
2620 | + h->plt.offset); | |
2621 | else | |
2622 | relocation = (htab->elf.splt->output_section->vma | |
2623 | + htab->elf.splt->output_offset | |
2624 | + h->plt.offset); | |
b34976b6 | 2625 | unresolved_reloc = FALSE; |
26e41594 | 2626 | break; |
a85d7ed0 | 2627 | |
5236c819 MS |
2628 | case R_390_PLTOFF16: |
2629 | case R_390_PLTOFF32: | |
26e41594 AM |
2630 | /* Relocation is to the entry for this symbol in the |
2631 | procedure linkage table relative to the start of the GOT. */ | |
5236c819 MS |
2632 | |
2633 | /* For local symbols or if we didn't make a PLT entry for | |
2634 | this symbol resolve the symbol directly. */ | |
31db78f6 | 2635 | if (h == NULL |
5236c819 | 2636 | || h->plt.offset == (bfd_vma) -1 |
31db78f6 | 2637 | || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h))) |
5236c819 | 2638 | { |
f41345a7 | 2639 | relocation -= htab->elf.sgot->output_section->vma; |
5236c819 MS |
2640 | break; |
2641 | } | |
2642 | ||
470b557a AK |
2643 | if (s390_is_ifunc_symbol_p (h)) |
2644 | relocation = (htab->elf.iplt->output_section->vma | |
2645 | + htab->elf.iplt->output_offset | |
2646 | + h->plt.offset | |
2647 | - htab->elf.sgot->output_section->vma); | |
2648 | else | |
2649 | relocation = (htab->elf.splt->output_section->vma | |
2650 | + htab->elf.splt->output_offset | |
2651 | + h->plt.offset | |
2652 | - htab->elf.sgot->output_section->vma); | |
5236c819 | 2653 | unresolved_reloc = FALSE; |
26e41594 AM |
2654 | break; |
2655 | ||
2656 | case R_390_8: | |
2657 | case R_390_16: | |
2658 | case R_390_32: | |
2659 | case R_390_PC16: | |
2660 | case R_390_PC16DBL: | |
2661 | case R_390_PC32DBL: | |
2662 | case R_390_PC32: | |
470b557a AK |
2663 | if (h != NULL |
2664 | && s390_is_ifunc_symbol_p (h) | |
2665 | && h->def_regular) | |
2666 | { | |
2667 | if (!info->shared || !h->non_got_ref) | |
2668 | { | |
2669 | /* For a non-shared object STT_GNU_IFUNC symbol must | |
2670 | go through PLT. */ | |
2671 | relocation = (htab->elf.iplt->output_section->vma | |
2672 | + htab->elf.iplt->output_offset | |
2673 | + h ->plt.offset); | |
2674 | goto do_relocation; | |
2675 | } | |
2676 | else | |
2677 | { | |
2678 | /* For shared objects a runtime relocation is needed. */ | |
2679 | ||
2680 | Elf_Internal_Rela outrel; | |
2681 | asection *sreloc; | |
2682 | ||
2683 | /* Need a dynamic relocation to get the real function | |
2684 | address. */ | |
2685 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
2686 | info, | |
2687 | input_section, | |
2688 | rel->r_offset); | |
2689 | if (outrel.r_offset == (bfd_vma) -1 | |
2690 | || outrel.r_offset == (bfd_vma) -2) | |
2691 | abort (); | |
2692 | ||
2693 | outrel.r_offset += (input_section->output_section->vma | |
2694 | + input_section->output_offset); | |
2695 | ||
2696 | if (h->dynindx == -1 | |
2697 | || h->forced_local | |
2698 | || info->executable) | |
2699 | { | |
2700 | /* This symbol is resolved locally. */ | |
2701 | outrel.r_info = ELF32_R_INFO (0, R_390_IRELATIVE); | |
2702 | outrel.r_addend = (h->root.u.def.value | |
2703 | + h->root.u.def.section->output_section->vma | |
2704 | + h->root.u.def.section->output_offset); | |
2705 | } | |
2706 | else | |
2707 | { | |
2708 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
2709 | outrel.r_addend = 0; | |
2710 | } | |
2711 | ||
2712 | sreloc = htab->elf.irelifunc; | |
2713 | elf_append_rela (output_bfd, sreloc, &outrel); | |
2714 | ||
2715 | /* If this reloc is against an external symbol, we | |
2716 | do not want to fiddle with the addend. Otherwise, | |
2717 | we need to include the symbol value so that it | |
2718 | becomes an addend for the dynamic reloc. For an | |
2719 | internal symbol, we have updated addend. */ | |
2720 | continue; | |
2721 | } | |
2722 | } | |
2723 | ||
b1e24c02 | 2724 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
2725 | break; |
2726 | ||
26e41594 | 2727 | if ((info->shared |
82058a73 MS |
2728 | && (h == NULL |
2729 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2730 | || h->root.type != bfd_link_hash_undefweak) | |
0451c93c MS |
2731 | && ((r_type != R_390_PC16 |
2732 | && r_type != R_390_PC16DBL | |
befc3abb | 2733 | && r_type != R_390_PC32DBL |
0451c93c | 2734 | && r_type != R_390_PC32) |
8c21ca21 | 2735 | || !SYMBOL_CALLS_LOCAL (info, h))) |
64285810 MS |
2736 | || (ELIMINATE_COPY_RELOCS |
2737 | && !info->shared | |
0451c93c MS |
2738 | && h != NULL |
2739 | && h->dynindx != -1 | |
f5385ebf AM |
2740 | && !h->non_got_ref |
2741 | && ((h->def_dynamic | |
2742 | && !h->def_regular) | |
0451c93c MS |
2743 | || h->root.type == bfd_link_hash_undefweak |
2744 | || h->root.type == bfd_link_hash_undefined))) | |
26e41594 AM |
2745 | { |
2746 | Elf_Internal_Rela outrel; | |
2747 | bfd_boolean skip, relocate; | |
0451c93c | 2748 | asection *sreloc; |
947216bf | 2749 | bfd_byte *loc; |
ec338859 | 2750 | |
0451c93c MS |
2751 | /* When generating a shared object, these relocations |
2752 | are copied into the output file to be resolved at run | |
2753 | time. */ | |
ec338859 | 2754 | |
26e41594 AM |
2755 | skip = FALSE; |
2756 | relocate = FALSE; | |
ec338859 | 2757 | |
c629eae0 JJ |
2758 | outrel.r_offset = |
2759 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2760 | rel->r_offset); | |
2761 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2762 | skip = TRUE; |
0bb2d96a | 2763 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2764 | skip = TRUE, relocate = TRUE; |
26e41594 AM |
2765 | outrel.r_offset += (input_section->output_section->vma |
2766 | + input_section->output_offset); | |
ec338859 | 2767 | |
26e41594 | 2768 | if (skip) |
0bb2d96a | 2769 | memset (&outrel, 0, sizeof outrel); |
26e41594 | 2770 | else if (h != NULL |
0451c93c MS |
2771 | && h->dynindx != -1 |
2772 | && (r_type == R_390_PC16 | |
2773 | || r_type == R_390_PC16DBL | |
befc3abb | 2774 | || r_type == R_390_PC32DBL |
0451c93c MS |
2775 | || r_type == R_390_PC32 |
2776 | || !info->shared | |
8c21ca21 | 2777 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 2778 | || !h->def_regular)) |
26e41594 AM |
2779 | { |
2780 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
27018c3f | 2781 | outrel.r_addend = rel->r_addend; |
26e41594 AM |
2782 | } |
2783 | else | |
2784 | { | |
0451c93c | 2785 | /* This symbol is local, or marked to become local. */ |
90ced0dd | 2786 | outrel.r_addend = relocation + rel->r_addend; |
b5727d75 MS |
2787 | if (r_type == R_390_32) |
2788 | { | |
2789 | relocate = TRUE; | |
2790 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
b5727d75 MS |
2791 | } |
2792 | else | |
2793 | { | |
2794 | long sindx; | |
2795 | ||
90ced0dd | 2796 | if (bfd_is_abs_section (sec)) |
b5727d75 MS |
2797 | sindx = 0; |
2798 | else if (sec == NULL || sec->owner == NULL) | |
2799 | { | |
2800 | bfd_set_error(bfd_error_bad_value); | |
2801 | return FALSE; | |
2802 | } | |
2803 | else | |
2804 | { | |
2805 | asection *osec; | |
2806 | ||
2807 | osec = sec->output_section; | |
2808 | sindx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
2809 | if (sindx == 0) |
2810 | { | |
2811 | osec = htab->elf.text_index_section; | |
2812 | sindx = elf_section_data (osec)->dynindx; | |
2813 | } | |
2814 | BFD_ASSERT (sindx != 0); | |
90ced0dd MS |
2815 | |
2816 | /* We are turning this relocation into one | |
2817 | against a section symbol, so subtract out | |
2818 | the output section's address but not the | |
2819 | offset of the input section in the output | |
2820 | section. */ | |
90ced0dd | 2821 | outrel.r_addend -= osec->vma; |
b5727d75 MS |
2822 | } |
2823 | outrel.r_info = ELF32_R_INFO (sindx, r_type); | |
b5727d75 | 2824 | } |
26e41594 | 2825 | } |
ec338859 | 2826 | |
0451c93c MS |
2827 | sreloc = elf_section_data (input_section)->sreloc; |
2828 | if (sreloc == NULL) | |
2829 | abort (); | |
ec338859 | 2830 | |
947216bf AM |
2831 | loc = sreloc->contents; |
2832 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 2833 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
ec338859 | 2834 | |
26e41594 AM |
2835 | /* If this reloc is against an external symbol, we do |
2836 | not want to fiddle with the addend. Otherwise, we | |
2837 | need to include the symbol value so that it becomes | |
2838 | an addend for the dynamic reloc. */ | |
2839 | if (! relocate) | |
2840 | continue; | |
2841 | } | |
0451c93c | 2842 | break; |
ec338859 | 2843 | |
69fc87f1 MS |
2844 | /* Relocations for tls literal pool entries. */ |
2845 | case R_390_TLS_IE32: | |
2846 | if (info->shared) | |
2847 | { | |
2848 | Elf_Internal_Rela outrel; | |
2849 | asection *sreloc; | |
2850 | bfd_byte *loc; | |
2851 | ||
2852 | outrel.r_offset = rel->r_offset | |
2853 | + input_section->output_section->vma | |
2854 | + input_section->output_offset; | |
2855 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
2856 | sreloc = elf_section_data (input_section)->sreloc; | |
2857 | if (sreloc == NULL) | |
2858 | abort (); | |
2859 | loc = sreloc->contents; | |
2860 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
2861 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
2862 | } | |
ae9a127f | 2863 | /* Fall through. */ |
69fc87f1 MS |
2864 | |
2865 | case R_390_TLS_GD32: | |
2866 | case R_390_TLS_GOTIE32: | |
2867 | r_type = elf_s390_tls_transition (info, r_type, h == NULL); | |
2868 | tls_type = GOT_UNKNOWN; | |
2869 | if (h == NULL && local_got_offsets) | |
2870 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
2871 | else if (h != NULL) | |
2872 | { | |
2873 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
2874 | if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE) | |
2875 | r_type = R_390_TLS_LE32; | |
2876 | } | |
2877 | if (r_type == R_390_TLS_GD32 && tls_type >= GOT_TLS_IE) | |
2878 | r_type = R_390_TLS_IE32; | |
2879 | ||
2880 | if (r_type == R_390_TLS_LE32) | |
2881 | { | |
2882 | /* This relocation gets optimized away by the local exec | |
2883 | access optimization. */ | |
2884 | BFD_ASSERT (! unresolved_reloc); | |
2885 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
2886 | contents + rel->r_offset); | |
2887 | continue; | |
2888 | } | |
2889 | ||
f41345a7 | 2890 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2891 | abort (); |
2892 | ||
2893 | if (h != NULL) | |
2894 | off = h->got.offset; | |
2895 | else | |
2896 | { | |
2897 | if (local_got_offsets == NULL) | |
2898 | abort (); | |
2899 | ||
2900 | off = local_got_offsets[r_symndx]; | |
2901 | } | |
2902 | ||
2903 | emit_tls_relocs: | |
2904 | ||
2905 | if ((off & 1) != 0) | |
2906 | off &= ~1; | |
26e41594 | 2907 | else |
69fc87f1 MS |
2908 | { |
2909 | Elf_Internal_Rela outrel; | |
2910 | bfd_byte *loc; | |
2911 | int dr_type, indx; | |
2912 | ||
f41345a7 | 2913 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
2914 | abort (); |
2915 | ||
f41345a7 AK |
2916 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
2917 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
2918 | |
2919 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
2920 | if (r_type == R_390_TLS_GD32) | |
2921 | dr_type = R_390_TLS_DTPMOD; | |
2922 | else | |
2923 | dr_type = R_390_TLS_TPOFF; | |
2924 | if (dr_type == R_390_TLS_TPOFF && indx == 0) | |
2925 | outrel.r_addend = relocation - dtpoff_base (info); | |
2926 | else | |
2927 | outrel.r_addend = 0; | |
2928 | outrel.r_info = ELF32_R_INFO (indx, dr_type); | |
f41345a7 AK |
2929 | loc = htab->elf.srelgot->contents; |
2930 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
2931 | * sizeof (Elf32_External_Rela); |
2932 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
2933 | ||
2934 | if (r_type == R_390_TLS_GD32) | |
2935 | { | |
2936 | if (indx == 0) | |
2937 | { | |
26e41594 | 2938 | BFD_ASSERT (! unresolved_reloc); |
69fc87f1 MS |
2939 | bfd_put_32 (output_bfd, |
2940 | relocation - dtpoff_base (info), | |
f41345a7 | 2941 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
2942 | } |
2943 | else | |
2944 | { | |
2945 | outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_DTPOFF); | |
2946 | outrel.r_offset += GOT_ENTRY_SIZE; | |
2947 | outrel.r_addend = 0; | |
f41345a7 | 2948 | htab->elf.srelgot->reloc_count++; |
69fc87f1 MS |
2949 | loc += sizeof (Elf32_External_Rela); |
2950 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
2951 | } | |
2952 | } | |
2953 | ||
2954 | if (h != NULL) | |
2955 | h->got.offset |= 1; | |
2956 | else | |
2957 | local_got_offsets[r_symndx] |= 1; | |
2958 | } | |
2959 | ||
2960 | if (off >= (bfd_vma) -2) | |
2961 | abort (); | |
2962 | if (r_type == ELF32_R_TYPE (rel->r_info)) | |
2963 | { | |
f41345a7 | 2964 | relocation = htab->elf.sgot->output_offset + off; |
69fc87f1 | 2965 | if (r_type == R_390_TLS_IE32 || r_type == R_390_TLS_IEENT) |
f41345a7 | 2966 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
2967 | unresolved_reloc = FALSE; |
2968 | } | |
2969 | else | |
2970 | { | |
f41345a7 | 2971 | bfd_put_32 (output_bfd, htab->elf.sgot->output_offset + off, |
69fc87f1 MS |
2972 | contents + rel->r_offset); |
2973 | continue; | |
2974 | } | |
2975 | break; | |
2976 | ||
2977 | case R_390_TLS_GOTIE12: | |
bd1ea41b | 2978 | case R_390_TLS_GOTIE20: |
69fc87f1 MS |
2979 | case R_390_TLS_IEENT: |
2980 | if (h == NULL) | |
2981 | { | |
2982 | if (local_got_offsets == NULL) | |
2983 | abort(); | |
2984 | off = local_got_offsets[r_symndx]; | |
2985 | if (info->shared) | |
2986 | goto emit_tls_relocs; | |
2987 | } | |
2988 | else | |
2989 | { | |
2990 | off = h->got.offset; | |
2991 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
2992 | if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE) | |
2993 | goto emit_tls_relocs; | |
2994 | } | |
2995 | ||
f41345a7 | 2996 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
2997 | abort (); |
2998 | ||
2999 | BFD_ASSERT (! unresolved_reloc); | |
3000 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
f41345a7 AK |
3001 | htab->elf.sgot->contents + off); |
3002 | relocation = htab->elf.sgot->output_offset + off; | |
69fc87f1 | 3003 | if (r_type == R_390_TLS_IEENT) |
f41345a7 | 3004 | relocation += htab->elf.sgot->output_section->vma; |
69fc87f1 MS |
3005 | unresolved_reloc = FALSE; |
3006 | break; | |
3007 | ||
3008 | case R_390_TLS_LDM32: | |
3009 | if (! info->shared) | |
3010 | /* The literal pool entry this relocation refers to gets ignored | |
3011 | by the optimized code of the local exec model. Do nothing | |
3012 | and the value will turn out zero. */ | |
3013 | continue; | |
3014 | ||
f41345a7 | 3015 | if (htab->elf.sgot == NULL) |
69fc87f1 MS |
3016 | abort (); |
3017 | ||
3018 | off = htab->tls_ldm_got.offset; | |
3019 | if (off & 1) | |
3020 | off &= ~1; | |
3021 | else | |
3022 | { | |
3023 | Elf_Internal_Rela outrel; | |
3024 | bfd_byte *loc; | |
3025 | ||
f41345a7 | 3026 | if (htab->elf.srelgot == NULL) |
69fc87f1 MS |
3027 | abort (); |
3028 | ||
f41345a7 AK |
3029 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3030 | + htab->elf.sgot->output_offset + off); | |
69fc87f1 MS |
3031 | |
3032 | bfd_put_32 (output_bfd, 0, | |
f41345a7 | 3033 | htab->elf.sgot->contents + off + GOT_ENTRY_SIZE); |
69fc87f1 MS |
3034 | outrel.r_info = ELF32_R_INFO (0, R_390_TLS_DTPMOD); |
3035 | outrel.r_addend = 0; | |
f41345a7 AK |
3036 | loc = htab->elf.srelgot->contents; |
3037 | loc += htab->elf.srelgot->reloc_count++ | |
69fc87f1 MS |
3038 | * sizeof (Elf32_External_Rela); |
3039 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
3040 | htab->tls_ldm_got.offset |= 1; | |
3041 | } | |
f41345a7 | 3042 | relocation = htab->elf.sgot->output_offset + off; |
26e41594 | 3043 | unresolved_reloc = FALSE; |
69fc87f1 MS |
3044 | break; |
3045 | ||
3046 | case R_390_TLS_LE32: | |
3047 | if (info->shared) | |
3048 | { | |
3049 | /* Linking a shared library with non-fpic code requires | |
3050 | a R_390_TLS_TPOFF relocation. */ | |
3051 | Elf_Internal_Rela outrel; | |
3052 | asection *sreloc; | |
3053 | bfd_byte *loc; | |
3054 | int indx; | |
3055 | ||
3056 | outrel.r_offset = rel->r_offset | |
3057 | + input_section->output_section->vma | |
3058 | + input_section->output_offset; | |
3059 | if (h != NULL && h->dynindx != -1) | |
3060 | indx = h->dynindx; | |
3061 | else | |
3062 | indx = 0; | |
3063 | outrel.r_info = ELF32_R_INFO (indx, R_390_TLS_TPOFF); | |
3064 | if (indx == 0) | |
3065 | outrel.r_addend = relocation - dtpoff_base (info); | |
3066 | else | |
3067 | outrel.r_addend = 0; | |
3068 | sreloc = elf_section_data (input_section)->sreloc; | |
3069 | if (sreloc == NULL) | |
3070 | abort (); | |
3071 | loc = sreloc->contents; | |
3072 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
3073 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
3074 | } | |
3075 | else | |
3076 | { | |
3077 | BFD_ASSERT (! unresolved_reloc); | |
3078 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
3079 | contents + rel->r_offset); | |
3080 | } | |
3081 | continue; | |
3082 | ||
3083 | case R_390_TLS_LDO32: | |
de8bee76 | 3084 | if (info->shared || (input_section->flags & SEC_DEBUGGING)) |
69fc87f1 MS |
3085 | relocation -= dtpoff_base (info); |
3086 | else | |
3087 | /* When converting LDO to LE, we must negate. */ | |
3088 | relocation = -tpoff (info, relocation); | |
3089 | break; | |
3090 | ||
3091 | /* Relocations for tls instructions. */ | |
3092 | case R_390_TLS_LOAD: | |
3093 | case R_390_TLS_GDCALL: | |
3094 | case R_390_TLS_LDCALL: | |
3095 | tls_type = GOT_UNKNOWN; | |
3096 | if (h == NULL && local_got_offsets) | |
3097 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
3098 | else if (h != NULL) | |
3099 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
3100 | ||
3101 | if (tls_type == GOT_TLS_GD) | |
3102 | continue; | |
3103 | ||
3104 | if (r_type == R_390_TLS_LOAD) | |
3105 | { | |
3106 | if (!info->shared && (h == NULL || h->dynindx == -1)) | |
3107 | { | |
3108 | /* IE->LE transition. Four valid cases: | |
3109 | l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 | |
3110 | l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 | |
3111 | l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 | |
3112 | l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
3113 | unsigned int insn, ry; | |
3114 | ||
3115 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3116 | ry = 0; | |
3117 | if ((insn & 0xff00f000) == 0x58000000) | |
3118 | /* l %rx,0(%ry,0) -> lr %rx,%ry + bcr 0,0 */ | |
3119 | ry = (insn & 0x000f0000); | |
3120 | else if ((insn & 0xff0f0000) == 0x58000000) | |
3121 | /* l %rx,0(0,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
3122 | ry = (insn & 0x0000f000) << 4; | |
3123 | else if ((insn & 0xff00f000) == 0x5800c000) | |
3124 | /* l %rx,0(%ry,%r12) -> lr %rx,%ry + bcr 0,0 */ | |
3125 | ry = (insn & 0x000f0000); | |
3126 | else if ((insn & 0xff0f0000) == 0x580c0000) | |
3127 | /* l %rx,0(%r12,%ry) -> lr %rx,%ry + bcr 0,0 */ | |
3128 | ry = (insn & 0x0000f000) << 4; | |
3129 | else | |
3130 | invalid_tls_insn (input_bfd, input_section, rel); | |
3131 | insn = 0x18000700 | (insn & 0x00f00000) | ry; | |
3132 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
3133 | } | |
3134 | } | |
3135 | else if (r_type == R_390_TLS_GDCALL) | |
3136 | { | |
3137 | unsigned int insn; | |
3138 | ||
3139 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
77df2968 | 3140 | if ((insn & 0xff000fff) != 0x4d000000 && |
d0ddfe27 AK |
3141 | (insn & 0xffff0000) != 0xc0e50000 && |
3142 | (insn & 0xff000000) != 0x0d000000) | |
69fc87f1 MS |
3143 | invalid_tls_insn (input_bfd, input_section, rel); |
3144 | if (!info->shared && (h == NULL || h->dynindx == -1)) | |
77df2968 | 3145 | { |
d0ddfe27 AK |
3146 | if ((insn & 0xff000000) == 0x0d000000) |
3147 | { | |
3148 | /* GD->LE transition. | |
3149 | basr rx, ry -> nopr r7 */ | |
3150 | insn = 0x07070000 | (insn & 0xffff); | |
3151 | } | |
3152 | else if ((insn & 0xff000000) == 0x4d000000) | |
77df2968 MS |
3153 | { |
3154 | /* GD->LE transition. | |
3155 | bas %r14,0(%rx,%r13) -> bc 0,0 */ | |
3156 | insn = 0x47000000; | |
3157 | } | |
3158 | else | |
3159 | { | |
3160 | /* GD->LE transition. | |
d0ddfe27 | 3161 | brasl %r14,_tls_get_offset@plt -> brcl 0,. */ |
77df2968 MS |
3162 | insn = 0xc0040000; |
3163 | bfd_put_16 (output_bfd, 0x0000, | |
3164 | contents + rel->r_offset + 4); | |
3165 | } | |
3166 | } | |
69fc87f1 | 3167 | else |
77df2968 | 3168 | { |
d0ddfe27 AK |
3169 | /* If basr is used in the pic case to invoke |
3170 | _tls_get_offset, something went wrong before. */ | |
3171 | if ((insn & 0xff000000) == 0x0d000000) | |
3172 | invalid_tls_insn (input_bfd, input_section, rel); | |
3173 | ||
77df2968 MS |
3174 | if ((insn & 0xff000000) == 0x4d000000) |
3175 | { | |
3176 | /* GD->IE transition. | |
3177 | bas %r14,0(%rx,%r13) -> l %r2,0(%r2,%r12) */ | |
3178 | insn = 0x5822c000; | |
3179 | } | |
3180 | else | |
3181 | { | |
3182 | /* GD->IE transition. | |
3183 | brasl %r14,__tls_get_addr@plt -> | |
3184 | l %r2,0(%r2,%r12) ; bcr 0,0 */ | |
3185 | insn = 0x5822c000; | |
3186 | bfd_put_16 (output_bfd, 0x0700, | |
3187 | contents + rel->r_offset + 4); | |
3188 | } | |
3189 | } | |
69fc87f1 MS |
3190 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
3191 | } | |
3192 | else if (r_type == R_390_TLS_LDCALL) | |
3193 | { | |
3194 | if (!info->shared) | |
3195 | { | |
3196 | unsigned int insn; | |
3197 | ||
3198 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
77df2968 | 3199 | if ((insn & 0xff000fff) != 0x4d000000 && |
d0ddfe27 AK |
3200 | (insn & 0xffff0000) != 0xc0e50000 && |
3201 | (insn & 0xff000000) != 0x0d000000) | |
69fc87f1 | 3202 | invalid_tls_insn (input_bfd, input_section, rel); |
d0ddfe27 AK |
3203 | |
3204 | if ((insn & 0xff000000) == 0x0d000000) | |
3205 | { | |
3206 | /* LD->LE transition. | |
3207 | basr rx, ry -> nopr r7 */ | |
3208 | insn = 0x07070000 | (insn & 0xffff); | |
3209 | } | |
3210 | else if ((insn & 0xff000000) == 0x4d000000) | |
77df2968 MS |
3211 | { |
3212 | /* LD->LE transition. | |
3213 | bas %r14,0(%rx,%r13) -> bc 0,0 */ | |
3214 | insn = 0x47000000; | |
3215 | } | |
3216 | else | |
3217 | { | |
3218 | /* LD->LE transition. | |
d0ddfe27 | 3219 | brasl %r14,__tls_get_offset@plt -> brcl 0,. */ |
77df2968 MS |
3220 | insn = 0xc0040000; |
3221 | bfd_put_16 (output_bfd, 0x0000, | |
3222 | contents + rel->r_offset + 4); | |
3223 | } | |
69fc87f1 MS |
3224 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
3225 | } | |
3226 | } | |
3227 | continue; | |
3228 | ||
0451c93c MS |
3229 | default: |
3230 | break; | |
3231 | } | |
ec338859 | 3232 | |
239e1f3a AM |
3233 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3234 | because such sections are not SEC_ALLOC and thus ld.so will | |
3235 | not process them. */ | |
0451c93c | 3236 | if (unresolved_reloc |
239e1f3a | 3237 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
3238 | && h->def_dynamic) |
3239 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
3240 | rel->r_offset) != (bfd_vma) -1) | |
0451c93c | 3241 | (*_bfd_error_handler) |
843fe662 | 3242 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
3243 | input_bfd, |
3244 | input_section, | |
0451c93c | 3245 | (long) rel->r_offset, |
843fe662 | 3246 | howto->name, |
0451c93c | 3247 | h->root.root.string); |
ec338859 | 3248 | |
470b557a AK |
3249 | do_relocation: |
3250 | ||
bd1ea41b MS |
3251 | if (r_type == R_390_20 |
3252 | || r_type == R_390_GOT20 | |
3253 | || r_type == R_390_GOTPLT20 | |
3254 | || r_type == R_390_TLS_GOTIE20) | |
3255 | { | |
3256 | relocation += rel->r_addend; | |
3257 | relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12; | |
3258 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3259 | contents, rel->r_offset, | |
3260 | relocation, 0); | |
3261 | } | |
3262 | else | |
3263 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3264 | contents, rel->r_offset, | |
3265 | relocation, rel->r_addend); | |
ec338859 | 3266 | |
a85d7ed0 NC |
3267 | if (r != bfd_reloc_ok) |
3268 | { | |
0451c93c | 3269 | const char *name; |
ec338859 | 3270 | |
0451c93c MS |
3271 | if (h != NULL) |
3272 | name = h->root.root.string; | |
3273 | else | |
a85d7ed0 | 3274 | { |
0451c93c MS |
3275 | name = bfd_elf_string_from_elf_section (input_bfd, |
3276 | symtab_hdr->sh_link, | |
3277 | sym->st_name); | |
3278 | if (name == NULL) | |
b34976b6 | 3279 | return FALSE; |
0451c93c MS |
3280 | if (*name == '\0') |
3281 | name = bfd_section_name (input_bfd, sec); | |
3282 | } | |
ec338859 | 3283 | |
0451c93c MS |
3284 | if (r == bfd_reloc_overflow) |
3285 | { | |
ec338859 | 3286 | |
0451c93c | 3287 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f L |
3288 | (info, (h ? &h->root : NULL), name, howto->name, |
3289 | (bfd_vma) 0, input_bfd, input_section, | |
3290 | rel->r_offset))) | |
b34976b6 | 3291 | return FALSE; |
0451c93c MS |
3292 | } |
3293 | else | |
3294 | { | |
3295 | (*_bfd_error_handler) | |
d003868e AM |
3296 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
3297 | input_bfd, input_section, | |
0451c93c | 3298 | (long) rel->r_offset, name, (int) r); |
b34976b6 | 3299 | return FALSE; |
a85d7ed0 NC |
3300 | } |
3301 | } | |
3302 | } | |
ec338859 | 3303 | |
b34976b6 | 3304 | return TRUE; |
a85d7ed0 NC |
3305 | } |
3306 | ||
470b557a AK |
3307 | /* Generate the PLT slots together with the dynamic relocations needed |
3308 | for IFUNC symbols. */ | |
3309 | ||
3310 | static void | |
3311 | elf_s390_finish_ifunc_symbol (bfd *output_bfd, | |
3312 | struct bfd_link_info *info, | |
3313 | struct elf_link_hash_entry *h, | |
3314 | struct elf_s390_link_hash_table *htab, | |
3315 | bfd_vma iplt_offset, | |
3316 | bfd_vma resolver_address) | |
3317 | { | |
3318 | bfd_vma iplt_index; | |
3319 | bfd_vma got_offset; | |
3320 | bfd_vma igotiplt_offset; | |
3321 | Elf_Internal_Rela rela; | |
3322 | bfd_byte *loc; | |
3323 | asection *plt, *gotplt, *relplt; | |
3324 | bfd_vma relative_offset; | |
3325 | ||
3326 | if (htab->elf.iplt == NULL | |
3327 | || htab->elf.igotplt == NULL | |
3328 | || htab->elf.irelplt == NULL) | |
3329 | abort (); | |
3330 | ||
3331 | gotplt = htab->elf.igotplt; | |
3332 | relplt = htab->elf.irelplt; | |
3333 | ||
3334 | /* Index of the PLT slot within iplt section. */ | |
3335 | iplt_index = iplt_offset / PLT_ENTRY_SIZE; | |
3336 | plt = htab->elf.iplt; | |
3337 | /* Offset into the igot.plt section. */ | |
3338 | igotiplt_offset = iplt_index * GOT_ENTRY_SIZE; | |
3339 | /* Offset into the got section. */ | |
3340 | got_offset = igotiplt_offset + gotplt->output_offset; | |
3341 | ||
3342 | /* S390 uses halfwords for relative branch calc! */ | |
3343 | relative_offset = - (plt->output_offset + | |
3344 | (PLT_ENTRY_SIZE * iplt_index) + 18) / 2; | |
3345 | /* If offset is > 32768, branch to a previous branch | |
3346 | 390 can only handle +-64 K jumps. */ | |
3347 | if ( -32768 > (int) relative_offset ) | |
3348 | relative_offset | |
3349 | = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2); | |
3350 | ||
3351 | /* Fill in the entry in the procedure linkage table. */ | |
3352 | if (!info->shared) | |
3353 | { | |
3354 | memcpy (plt->contents + iplt_offset, elf_s390_plt_entry, | |
3355 | PLT_ENTRY_SIZE); | |
3356 | ||
3357 | /* Adjust jump to the first plt entry. */ | |
3358 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3359 | plt->contents + iplt_offset + 20); | |
3360 | ||
3361 | /* Push the GOT offset field. */ | |
3362 | bfd_put_32 (output_bfd, | |
3363 | (gotplt->output_section->vma | |
3364 | + got_offset), | |
3365 | plt->contents + iplt_offset + 24); | |
3366 | } | |
3367 | else if (got_offset < 4096) | |
3368 | { | |
3369 | /* The GOT offset is small enough to be used directly as | |
3370 | displacement. */ | |
3371 | memcpy (plt->contents + iplt_offset, | |
3372 | elf_s390_plt_pic12_entry, | |
3373 | PLT_ENTRY_SIZE); | |
3374 | ||
3375 | /* Put in the GOT offset as displacement value. The 0xc000 | |
3376 | value comes from the first word of the plt entry. Look | |
3377 | at the elf_s390_plt_pic16_entry content. */ | |
3378 | bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset, | |
3379 | plt->contents + iplt_offset + 2); | |
3380 | ||
3381 | /* Adjust the jump to the first plt entry. */ | |
3382 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3383 | plt->contents + iplt_offset + 20); | |
3384 | } | |
3385 | else if (got_offset < 32768) | |
3386 | { | |
3387 | /* The GOT offset is too big for a displacement but small | |
3388 | enough to be a signed 16 bit immediate value as it can be | |
3389 | used in an lhi instruction. */ | |
3390 | memcpy (plt->contents + iplt_offset, | |
3391 | elf_s390_plt_pic16_entry, | |
3392 | PLT_ENTRY_SIZE); | |
3393 | ||
3394 | /* Put in the GOT offset for the lhi instruction. */ | |
3395 | bfd_put_16 (output_bfd, (bfd_vma)got_offset, | |
3396 | plt->contents + iplt_offset + 2); | |
3397 | ||
3398 | /* Adjust the jump to the first plt entry. */ | |
3399 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3400 | plt->contents + iplt_offset + 20); | |
3401 | } | |
3402 | else | |
3403 | { | |
3404 | memcpy (plt->contents + iplt_offset, | |
3405 | elf_s390_plt_pic_entry, | |
3406 | PLT_ENTRY_SIZE); | |
3407 | ||
3408 | /* Adjust the jump to the first plt entry. */ | |
3409 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3410 | plt->contents + iplt_offset + 20); | |
3411 | ||
3412 | /* Push the GOT offset field. */ | |
3413 | bfd_put_32 (output_bfd, got_offset, | |
3414 | plt->contents + iplt_offset + 24); | |
3415 | } | |
3416 | /* Insert offset into reloc. table here. */ | |
3417 | bfd_put_32 (output_bfd, relplt->output_offset + | |
3418 | iplt_index * RELA_ENTRY_SIZE, | |
3419 | plt->contents + iplt_offset + 28); | |
3420 | ||
3421 | /* Fill in the entry in the global offset table. | |
3422 | Points to instruction after GOT offset. */ | |
3423 | bfd_put_32 (output_bfd, | |
3424 | (plt->output_section->vma | |
3425 | + plt->output_offset | |
3426 | + iplt_offset | |
3427 | + 12), | |
3428 | gotplt->contents + igotiplt_offset); | |
3429 | ||
3430 | /* Fill in the entry in the .rela.plt section. */ | |
3431 | rela.r_offset = gotplt->output_section->vma + got_offset; | |
3432 | ||
3433 | if (!h | |
3434 | || h->dynindx == -1 | |
3435 | || ((info->executable | |
3436 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
3437 | && h->def_regular)) | |
3438 | { | |
3439 | /* The symbol can be locally resolved. */ | |
3440 | rela.r_info = ELF32_R_INFO (0, R_390_IRELATIVE); | |
3441 | rela.r_addend = resolver_address; | |
3442 | } | |
3443 | else | |
3444 | { | |
3445 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3446 | rela.r_addend = 0; | |
3447 | } | |
3448 | ||
3449 | loc = relplt->contents + iplt_index * RELA_ENTRY_SIZE; | |
3450 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
3451 | } | |
3452 | ||
a85d7ed0 NC |
3453 | /* Finish up dynamic symbol handling. We set the contents of various |
3454 | dynamic sections here. */ | |
3455 | ||
b34976b6 | 3456 | static bfd_boolean |
2c3fc389 NC |
3457 | elf_s390_finish_dynamic_symbol (bfd *output_bfd, |
3458 | struct bfd_link_info *info, | |
3459 | struct elf_link_hash_entry *h, | |
3460 | Elf_Internal_Sym *sym) | |
a85d7ed0 | 3461 | { |
0451c93c | 3462 | struct elf_s390_link_hash_table *htab; |
470b557a | 3463 | struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h; |
ec338859 | 3464 | |
0451c93c | 3465 | htab = elf_s390_hash_table (info); |
ec338859 | 3466 | |
a85d7ed0 NC |
3467 | if (h->plt.offset != (bfd_vma) -1) |
3468 | { | |
0451c93c MS |
3469 | bfd_vma plt_index; |
3470 | bfd_vma got_offset; | |
a85d7ed0 | 3471 | Elf_Internal_Rela rela; |
947216bf | 3472 | bfd_byte *loc; |
a85d7ed0 | 3473 | bfd_vma relative_offset; |
ec338859 | 3474 | |
a85d7ed0 | 3475 | /* This symbol has an entry in the procedure linkage table. Set |
26e41594 | 3476 | it up. */ |
470b557a | 3477 | if (s390_is_ifunc_symbol_p (h)) |
0451c93c | 3478 | { |
470b557a AK |
3479 | /* If we can resolve the IFUNC symbol locally we generate an |
3480 | IRELATIVE reloc. */ | |
3481 | elf_s390_finish_ifunc_symbol (output_bfd, info, h, htab, h->plt.offset, | |
3482 | eh->ifunc_resolver_address + | |
3483 | eh->ifunc_resolver_section->output_offset + | |
3484 | eh->ifunc_resolver_section->output_section->vma); | |
3485 | /* Fallthrough. Handling of explicit GOT slots of IFUNC | |
3486 | symbols is below. */ | |
0451c93c | 3487 | } |
a85d7ed0 | 3488 | else |
0451c93c | 3489 | { |
470b557a AK |
3490 | if (h->dynindx == -1 |
3491 | || htab->elf.splt == NULL | |
3492 | || htab->elf.sgotplt == NULL | |
3493 | || htab->elf.srelplt == NULL) | |
3494 | abort (); | |
9aa17453 | 3495 | |
470b557a AK |
3496 | /* Calc. index no. |
3497 | Current offset - size first entry / entry size. */ | |
3498 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
9aa17453 | 3499 | |
470b557a AK |
3500 | /* Offset in GOT is PLT index plus GOT headers(3) times 4, |
3501 | addr & GOT addr. */ | |
3502 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
a85d7ed0 | 3503 | |
470b557a AK |
3504 | /* S390 uses halfwords for relative branch calc! */ |
3505 | relative_offset = - ((PLT_FIRST_ENTRY_SIZE + | |
3506 | (PLT_ENTRY_SIZE * plt_index) + 18) / 2); | |
3507 | /* If offset is > 32768, branch to a previous branch | |
3508 | 390 can only handle +-64 K jumps. */ | |
3509 | if ( -32768 > (int) relative_offset ) | |
3510 | relative_offset | |
3511 | = -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2); | |
ec338859 | 3512 | |
470b557a AK |
3513 | /* Fill in the entry in the procedure linkage table. */ |
3514 | if (!info->shared) | |
3515 | { | |
3516 | memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390_plt_entry, | |
3517 | PLT_ENTRY_SIZE); | |
3518 | ||
3519 | /* Adjust jump to the first plt entry. */ | |
3520 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3521 | htab->elf.splt->contents + h->plt.offset + 20); | |
3522 | ||
3523 | /* Push the GOT offset field. */ | |
3524 | bfd_put_32 (output_bfd, | |
3525 | (htab->elf.sgotplt->output_section->vma | |
3526 | + htab->elf.sgotplt->output_offset | |
3527 | + got_offset), | |
3528 | htab->elf.splt->contents + h->plt.offset + 24); | |
3529 | } | |
3530 | else if (got_offset < 4096) | |
3531 | { | |
3532 | /* The GOT offset is small enough to be used directly as | |
3533 | displacement. */ | |
3534 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3535 | elf_s390_plt_pic12_entry, | |
3536 | PLT_ENTRY_SIZE); | |
3537 | ||
3538 | /* Put in the GOT offset as displacement value. The 0xc000 | |
3539 | value comes from the first word of the plt entry. Look | |
3540 | at the elf_s390_plt_pic16_entry content. */ | |
3541 | bfd_put_16 (output_bfd, (bfd_vma)0xc000 | got_offset, | |
3542 | htab->elf.splt->contents + h->plt.offset + 2); | |
3543 | ||
3544 | /* Adjust the jump to the first plt entry. */ | |
3545 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3546 | htab->elf.splt->contents + h->plt.offset + 20); | |
3547 | } | |
3548 | else if (got_offset < 32768) | |
3549 | { | |
3550 | /* The GOT offset is too big for a displacement but small | |
3551 | enough to be a signed 16 bit immediate value as it can be | |
3552 | used in an lhi instruction. */ | |
3553 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3554 | elf_s390_plt_pic16_entry, | |
3555 | PLT_ENTRY_SIZE); | |
3556 | ||
3557 | /* Put in the GOT offset for the lhi instruction. */ | |
3558 | bfd_put_16 (output_bfd, (bfd_vma)got_offset, | |
3559 | htab->elf.splt->contents + h->plt.offset + 2); | |
3560 | ||
3561 | /* Adjust the jump to the first plt entry. */ | |
3562 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3563 | htab->elf.splt->contents + h->plt.offset + 20); | |
3564 | } | |
3565 | else | |
3566 | { | |
3567 | memcpy (htab->elf.splt->contents + h->plt.offset, | |
3568 | elf_s390_plt_pic_entry, | |
3569 | PLT_ENTRY_SIZE); | |
3570 | ||
3571 | /* Adjust the jump to the first plt entry. */ | |
3572 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
3573 | htab->elf.splt->contents + h->plt.offset + 20); | |
3574 | ||
3575 | /* Push the GOT offset field. */ | |
3576 | bfd_put_32 (output_bfd, got_offset, | |
3577 | htab->elf.splt->contents + h->plt.offset + 24); | |
3578 | } | |
3579 | /* Insert offset into reloc. table here. */ | |
3580 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
3581 | htab->elf.splt->contents + h->plt.offset + 28); | |
3582 | ||
3583 | /* Fill in the entry in the global offset table. | |
3584 | Points to instruction after GOT offset. */ | |
3585 | bfd_put_32 (output_bfd, | |
3586 | (htab->elf.splt->output_section->vma | |
3587 | + htab->elf.splt->output_offset | |
3588 | + h->plt.offset | |
3589 | + 12), | |
3590 | htab->elf.sgotplt->contents + got_offset); | |
3591 | ||
3592 | /* Fill in the entry in the .rela.plt section. */ | |
3593 | rela.r_offset = (htab->elf.sgotplt->output_section->vma | |
3594 | + htab->elf.sgotplt->output_offset | |
3595 | + got_offset); | |
3596 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3597 | rela.r_addend = 0; | |
3598 | loc = htab->elf.srelplt->contents + plt_index * sizeof (Elf32_External_Rela); | |
3599 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
3600 | ||
3601 | if (!h->def_regular) | |
3602 | { | |
3603 | /* Mark the symbol as undefined, rather than as defined in | |
3604 | the .plt section. Leave the value alone. This is a clue | |
3605 | for the dynamic linker, to make function pointer | |
3606 | comparisons work between an application and shared | |
3607 | library. */ | |
3608 | sym->st_shndx = SHN_UNDEF; | |
3609 | } | |
a85d7ed0 NC |
3610 | } |
3611 | } | |
ec338859 | 3612 | |
69fc87f1 MS |
3613 | if (h->got.offset != (bfd_vma) -1 |
3614 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD | |
3615 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE | |
3616 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT) | |
a85d7ed0 | 3617 | { |
a85d7ed0 | 3618 | Elf_Internal_Rela rela; |
947216bf | 3619 | bfd_byte *loc; |
a85d7ed0 NC |
3620 | |
3621 | /* This symbol has an entry in the global offset table. Set it | |
26e41594 | 3622 | up. */ |
a85d7ed0 | 3623 | |
f41345a7 | 3624 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
0451c93c | 3625 | abort (); |
a85d7ed0 | 3626 | |
f41345a7 AK |
3627 | rela.r_offset = (htab->elf.sgot->output_section->vma |
3628 | + htab->elf.sgot->output_offset | |
dc810e39 | 3629 | + (h->got.offset &~ (bfd_vma) 1)); |
a85d7ed0 NC |
3630 | |
3631 | /* If this is a static link, or it is a -Bsymbolic link and the | |
3632 | symbol is defined locally or was forced to be local because | |
3633 | of a version file, we just want to emit a RELATIVE reloc. | |
3634 | The entry in the global offset table will already have been | |
3635 | initialized in the relocate_section function. */ | |
470b557a AK |
3636 | if (h->def_regular && s390_is_ifunc_symbol_p (h)) |
3637 | { | |
3638 | if (info->shared) | |
3639 | { | |
3640 | /* An explicit GOT slot usage needs GLOB_DAT. If the | |
3641 | symbol references local the implicit got.iplt slot | |
3642 | will be used and the IRELATIVE reloc has been created | |
3643 | above. */ | |
3644 | goto do_glob_dat; | |
3645 | } | |
3646 | else | |
3647 | { | |
3648 | /* For non-shared objects explicit GOT slots must be | |
3649 | filled with the PLT slot address for pointer | |
3650 | equality reasons. */ | |
3651 | bfd_put_32 (output_bfd, (htab->elf.iplt->output_section->vma | |
3652 | + htab->elf.iplt->output_offset | |
3653 | + h->plt.offset), | |
3654 | htab->elf.sgot->contents + h->got.offset); | |
3655 | return TRUE; | |
3656 | } | |
3657 | } | |
3658 | else if (info->shared | |
8c21ca21 | 3659 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
0451c93c | 3660 | { |
470b557a AK |
3661 | /* If this is a static link, or it is a -Bsymbolic link and |
3662 | the symbol is defined locally or was forced to be local | |
3663 | because of a version file, we just want to emit a | |
3664 | RELATIVE reloc. The entry in the global offset table | |
3665 | will already have been initialized in the | |
3666 | relocate_section function. */ | |
8c21ca21 AK |
3667 | if (!h->def_regular) |
3668 | return FALSE; | |
0451c93c MS |
3669 | BFD_ASSERT((h->got.offset & 1) != 0); |
3670 | rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
3671 | rela.r_addend = (h->root.u.def.value | |
26e41594 AM |
3672 | + h->root.u.def.section->output_section->vma |
3673 | + h->root.u.def.section->output_offset); | |
3674 | } | |
a85d7ed0 NC |
3675 | else |
3676 | { | |
3677 | BFD_ASSERT((h->got.offset & 1) == 0); | |
470b557a | 3678 | do_glob_dat: |
f41345a7 | 3679 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset); |
a85d7ed0 | 3680 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT); |
26e41594 AM |
3681 | rela.r_addend = 0; |
3682 | } | |
a85d7ed0 | 3683 | |
f41345a7 AK |
3684 | loc = htab->elf.srelgot->contents; |
3685 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 3686 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3687 | } |
3688 | ||
f5385ebf | 3689 | if (h->needs_copy) |
a85d7ed0 | 3690 | { |
a85d7ed0 | 3691 | Elf_Internal_Rela rela; |
947216bf | 3692 | bfd_byte *loc; |
a85d7ed0 NC |
3693 | |
3694 | /* This symbols needs a copy reloc. Set it up. */ | |
3695 | ||
0451c93c MS |
3696 | if (h->dynindx == -1 |
3697 | || (h->root.type != bfd_link_hash_defined | |
3698 | && h->root.type != bfd_link_hash_defweak) | |
3699 | || htab->srelbss == NULL) | |
3700 | abort (); | |
a85d7ed0 NC |
3701 | |
3702 | rela.r_offset = (h->root.u.def.value | |
3703 | + h->root.u.def.section->output_section->vma | |
3704 | + h->root.u.def.section->output_offset); | |
3705 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY); | |
3706 | rela.r_addend = 0; | |
947216bf AM |
3707 | loc = htab->srelbss->contents; |
3708 | loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 3709 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3710 | } |
3711 | ||
3712 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 3713 | if (h == htab->elf.hdynamic |
22edb2f1 RS |
3714 | || h == htab->elf.hgot |
3715 | || h == htab->elf.hplt) | |
a85d7ed0 NC |
3716 | sym->st_shndx = SHN_ABS; |
3717 | ||
b34976b6 | 3718 | return TRUE; |
a85d7ed0 NC |
3719 | } |
3720 | ||
0451c93c MS |
3721 | /* Used to decide how to sort relocs in an optimal manner for the |
3722 | dynamic linker, before writing them out. */ | |
3723 | ||
3724 | static enum elf_reloc_type_class | |
2c3fc389 | 3725 | elf_s390_reloc_type_class (const Elf_Internal_Rela *rela) |
0451c93c MS |
3726 | { |
3727 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
3728 | { | |
3729 | case R_390_RELATIVE: | |
3730 | return reloc_class_relative; | |
3731 | case R_390_JMP_SLOT: | |
3732 | return reloc_class_plt; | |
3733 | case R_390_COPY: | |
3734 | return reloc_class_copy; | |
3735 | default: | |
3736 | return reloc_class_normal; | |
3737 | } | |
3738 | } | |
3739 | ||
a85d7ed0 NC |
3740 | /* Finish up the dynamic sections. */ |
3741 | ||
b34976b6 | 3742 | static bfd_boolean |
2c3fc389 NC |
3743 | elf_s390_finish_dynamic_sections (bfd *output_bfd, |
3744 | struct bfd_link_info *info) | |
a85d7ed0 | 3745 | { |
0451c93c | 3746 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
3747 | bfd *dynobj; |
3748 | asection *sdyn; | |
470b557a AK |
3749 | bfd *ibfd; |
3750 | unsigned int i; | |
a85d7ed0 | 3751 | |
0451c93c MS |
3752 | htab = elf_s390_hash_table (info); |
3753 | dynobj = htab->elf.dynobj; | |
3d4d4302 | 3754 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
a85d7ed0 | 3755 | |
0451c93c | 3756 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 | 3757 | { |
a85d7ed0 NC |
3758 | Elf32_External_Dyn *dyncon, *dynconend; |
3759 | ||
f41345a7 | 3760 | if (sdyn == NULL || htab->elf.sgot == NULL) |
0451c93c | 3761 | abort (); |
a85d7ed0 NC |
3762 | |
3763 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 3764 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
a85d7ed0 NC |
3765 | for (; dyncon < dynconend; dyncon++) |
3766 | { | |
3767 | Elf_Internal_Dyn dyn; | |
a85d7ed0 | 3768 | asection *s; |
ec338859 | 3769 | |
a85d7ed0 | 3770 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
ec338859 | 3771 | |
a85d7ed0 NC |
3772 | switch (dyn.d_tag) |
3773 | { | |
3774 | default: | |
0451c93c | 3775 | continue; |
ec338859 | 3776 | |
a85d7ed0 | 3777 | case DT_PLTGOT: |
f41345a7 | 3778 | dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma; |
0451c93c | 3779 | break; |
ec338859 | 3780 | |
a85d7ed0 | 3781 | case DT_JMPREL: |
f41345a7 | 3782 | dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma; |
a85d7ed0 NC |
3783 | break; |
3784 | ||
3785 | case DT_PLTRELSZ: | |
f41345a7 | 3786 | s = htab->elf.srelplt->output_section; |
eea6121a | 3787 | dyn.d_un.d_val = s->size; |
a85d7ed0 NC |
3788 | break; |
3789 | } | |
0451c93c MS |
3790 | |
3791 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
a85d7ed0 NC |
3792 | } |
3793 | ||
3794 | /* Fill in the special first entry in the procedure linkage table. */ | |
f41345a7 | 3795 | if (htab->elf.splt && htab->elf.splt->size > 0) |
a85d7ed0 | 3796 | { |
f41345a7 | 3797 | memset (htab->elf.splt->contents, 0, PLT_FIRST_ENTRY_SIZE); |
26e41594 | 3798 | if (info->shared) |
0451c93c | 3799 | { |
f41345a7 | 3800 | memcpy (htab->elf.splt->contents, elf_s390_plt_pic_first_entry, |
9aa17453 AK |
3801 | PLT_FIRST_ENTRY_SIZE); |
3802 | } | |
26e41594 | 3803 | else |
9aa17453 | 3804 | { |
f41345a7 | 3805 | memcpy (htab->elf.splt->contents, elf_s390_plt_first_entry, |
9aa17453 | 3806 | PLT_FIRST_ENTRY_SIZE); |
26e41594 | 3807 | bfd_put_32 (output_bfd, |
f41345a7 AK |
3808 | htab->elf.sgotplt->output_section->vma |
3809 | + htab->elf.sgotplt->output_offset, | |
3810 | htab->elf.splt->contents + 24); | |
26e41594 | 3811 | } |
f41345a7 | 3812 | elf_section_data (htab->elf.splt->output_section) |
0451c93c | 3813 | ->this_hdr.sh_entsize = 4; |
a85d7ed0 NC |
3814 | } |
3815 | ||
3816 | } | |
3817 | ||
f41345a7 | 3818 | if (htab->elf.sgotplt) |
a85d7ed0 | 3819 | { |
0451c93c | 3820 | /* Fill in the first three entries in the global offset table. */ |
f41345a7 | 3821 | if (htab->elf.sgotplt->size > 0) |
0451c93c MS |
3822 | { |
3823 | bfd_put_32 (output_bfd, | |
3824 | (sdyn == NULL ? (bfd_vma) 0 | |
3825 | : sdyn->output_section->vma + sdyn->output_offset), | |
f41345a7 | 3826 | htab->elf.sgotplt->contents); |
0451c93c | 3827 | /* One entry for shared object struct ptr. */ |
f41345a7 | 3828 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 4); |
0451c93c | 3829 | /* One entry for _dl_runtime_resolve. */ |
f41345a7 | 3830 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8); |
0451c93c | 3831 | } |
a85d7ed0 | 3832 | |
f41345a7 | 3833 | elf_section_data (htab->elf.sgotplt->output_section) |
0451c93c MS |
3834 | ->this_hdr.sh_entsize = 4; |
3835 | } | |
470b557a AK |
3836 | /* Finish dynamic symbol for local IFUNC symbols. */ |
3837 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
3838 | { | |
3839 | struct plt_entry *local_plt; | |
3840 | Elf_Internal_Sym *isym; | |
3841 | Elf_Internal_Shdr *symtab_hdr; | |
3842 | ||
3843 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
3844 | ||
3845 | local_plt = elf_s390_local_plt (ibfd); | |
3846 | if (local_plt != NULL) | |
3847 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
3848 | { | |
3849 | if (local_plt[i].plt.offset != (bfd_vma) -1) | |
3850 | { | |
3851 | asection *sec = local_plt[i].sec; | |
3852 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i); | |
3853 | if (isym == NULL) | |
3854 | return FALSE; | |
3855 | ||
3856 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
3857 | elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab, | |
3858 | local_plt[i].plt.offset, | |
3859 | isym->st_value | |
3860 | + sec->output_section->vma | |
3861 | + sec->output_offset); | |
3862 | ||
3863 | } | |
3864 | } | |
3865 | } | |
b34976b6 | 3866 | return TRUE; |
a85d7ed0 NC |
3867 | } |
3868 | ||
b34976b6 | 3869 | static bfd_boolean |
2c3fc389 | 3870 | elf_s390_grok_prstatus (bfd * abfd, Elf_Internal_Note * note) |
979f4a38 NC |
3871 | { |
3872 | int offset; | |
eea6121a | 3873 | unsigned int size; |
979f4a38 NC |
3874 | |
3875 | switch (note->descsz) | |
3876 | { | |
3877 | default: | |
b34976b6 | 3878 | return FALSE; |
979f4a38 NC |
3879 | |
3880 | case 224: /* S/390 Linux. */ | |
3881 | /* pr_cursig */ | |
3882 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
3883 | ||
3884 | /* pr_pid */ | |
261b8d08 | 3885 | elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24); |
979f4a38 NC |
3886 | |
3887 | /* pr_reg */ | |
3888 | offset = 72; | |
eea6121a | 3889 | size = 144; |
979f4a38 NC |
3890 | break; |
3891 | } | |
3892 | ||
3893 | /* Make a ".reg/999" section. */ | |
3894 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 3895 | size, note->descpos + offset); |
979f4a38 NC |
3896 | } |
3897 | ||
4c45e5c9 JJ |
3898 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
3899 | or (bfd_vma) -1 if it should not be included. */ | |
3900 | ||
3901 | static bfd_vma | |
3902 | elf_s390_plt_sym_val (bfd_vma i, const asection *plt, | |
3903 | const arelent *rel ATTRIBUTE_UNUSED) | |
3904 | { | |
3905 | return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE; | |
3906 | } | |
3907 | ||
55786da2 AK |
3908 | static bfd_boolean |
3909 | elf32_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
3910 | { | |
3911 | elf_elfheader (obfd)->e_flags |= elf_elfheader (ibfd)->e_flags; | |
3912 | return TRUE; | |
3913 | } | |
3914 | ||
4c45e5c9 | 3915 | |
a85d7ed0 NC |
3916 | #define TARGET_BIG_SYM bfd_elf32_s390_vec |
3917 | #define TARGET_BIG_NAME "elf32-s390" | |
3918 | #define ELF_ARCH bfd_arch_s390 | |
ae95ffa6 | 3919 | #define ELF_TARGET_ID S390_ELF_DATA |
a85d7ed0 NC |
3920 | #define ELF_MACHINE_CODE EM_S390 |
3921 | #define ELF_MACHINE_ALT1 EM_S390_OLD | |
3922 | #define ELF_MAXPAGESIZE 0x1000 | |
3923 | ||
3924 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 3925 | #define elf_backend_can_refcount 1 |
a85d7ed0 NC |
3926 | #define elf_backend_want_got_plt 1 |
3927 | #define elf_backend_plt_readonly 1 | |
3928 | #define elf_backend_want_plt_sym 0 | |
3929 | #define elf_backend_got_header_size 12 | |
b491616a | 3930 | #define elf_backend_rela_normal 1 |
a85d7ed0 | 3931 | |
26e41594 | 3932 | #define elf_info_to_howto elf_s390_info_to_howto |
a85d7ed0 | 3933 | |
a85d7ed0 NC |
3934 | #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name |
3935 | #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create | |
3936 | #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup | |
157090f7 | 3937 | #define bfd_elf32_bfd_reloc_name_lookup elf_s390_reloc_name_lookup |
a85d7ed0 | 3938 | |
55786da2 AK |
3939 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_s390_merge_private_bfd_data |
3940 | ||
a85d7ed0 | 3941 | #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol |
26e41594 | 3942 | #define elf_backend_check_relocs elf_s390_check_relocs |
0451c93c MS |
3943 | #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol |
3944 | #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections | |
a85d7ed0 NC |
3945 | #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections |
3946 | #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol | |
26e41594 AM |
3947 | #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook |
3948 | #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook | |
0451c93c | 3949 | #define elf_backend_reloc_type_class elf_s390_reloc_type_class |
26e41594 | 3950 | #define elf_backend_relocate_section elf_s390_relocate_section |
a85d7ed0 | 3951 | #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections |
74541ad4 | 3952 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
29c2fb7c | 3953 | #define elf_backend_reloc_type_class elf_s390_reloc_type_class |
979f4a38 | 3954 | #define elf_backend_grok_prstatus elf_s390_grok_prstatus |
4c45e5c9 | 3955 | #define elf_backend_plt_sym_val elf_s390_plt_sym_val |
470b557a | 3956 | #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook |
a85d7ed0 | 3957 | |
69fc87f1 | 3958 | #define bfd_elf32_mkobject elf_s390_mkobject |
26e41594 | 3959 | #define elf_backend_object_p elf_s390_object_p |
a85d7ed0 NC |
3960 | |
3961 | #include "elf32-target.h" |