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a85d7ed0 | 1 | /* IBM S/390-specific support for 64-bit ELF |
ae9a127f | 2 | Copyright 2000, 2001, 2002, 2003 Free Software Foundation, Inc. |
a85d7ed0 NC |
3 | Contributed Martin Schwidefsky (schwidefsky@de.ibm.com). |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
21 | ||
22 | #include "bfd.h" | |
23 | #include "sysdep.h" | |
24 | #include "bfdlink.h" | |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
27 | ||
28 | static reloc_howto_type *elf_s390_reloc_type_lookup | |
29 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
30 | static void elf_s390_info_to_howto | |
31 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); | |
b34976b6 | 32 | static bfd_boolean elf_s390_is_local_label_name |
0451c93c MS |
33 | PARAMS ((bfd *, const char *)); |
34 | static struct bfd_hash_entry *link_hash_newfunc | |
a85d7ed0 NC |
35 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
36 | static struct bfd_link_hash_table *elf_s390_link_hash_table_create | |
37 | PARAMS ((bfd *)); | |
b34976b6 | 38 | static bfd_boolean create_got_section |
0451c93c | 39 | PARAMS((bfd *, struct bfd_link_info *)); |
b34976b6 | 40 | static bfd_boolean elf_s390_create_dynamic_sections |
0451c93c MS |
41 | PARAMS((bfd *, struct bfd_link_info *)); |
42 | static void elf_s390_copy_indirect_symbol | |
b48fa14c AM |
43 | PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *, |
44 | struct elf_link_hash_entry *)); | |
b34976b6 | 45 | static bfd_boolean elf_s390_check_relocs |
a85d7ed0 NC |
46 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
47 | const Elf_Internal_Rela *)); | |
99c79b2e | 48 | static asection *elf_s390_gc_mark_hook |
1e2f5b6e | 49 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
99c79b2e | 50 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
b34976b6 | 51 | static bfd_boolean elf_s390_gc_sweep_hook |
99c79b2e AJ |
52 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
53 | const Elf_Internal_Rela *)); | |
5236c819 MS |
54 | struct elf_s390_link_hash_entry; |
55 | static void elf_s390_adjust_gotplt | |
56 | PARAMS ((struct elf_s390_link_hash_entry *)); | |
b34976b6 | 57 | static bfd_boolean elf_s390_adjust_dynamic_symbol |
a85d7ed0 | 58 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
b34976b6 | 59 | static bfd_boolean allocate_dynrelocs |
0451c93c | 60 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
b34976b6 | 61 | static bfd_boolean readonly_dynrelocs |
0451c93c | 62 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
b34976b6 | 63 | static bfd_boolean elf_s390_size_dynamic_sections |
a85d7ed0 | 64 | PARAMS ((bfd *, struct bfd_link_info *)); |
b34976b6 | 65 | static bfd_boolean elf_s390_relocate_section |
a85d7ed0 NC |
66 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
67 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
b34976b6 | 68 | static bfd_boolean elf_s390_finish_dynamic_symbol |
a85d7ed0 NC |
69 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
70 | Elf_Internal_Sym *)); | |
0451c93c MS |
71 | static enum elf_reloc_type_class elf_s390_reloc_type_class |
72 | PARAMS ((const Elf_Internal_Rela *)); | |
b34976b6 | 73 | static bfd_boolean elf_s390_finish_dynamic_sections |
a85d7ed0 | 74 | PARAMS ((bfd *, struct bfd_link_info *)); |
69fc87f1 MS |
75 | static bfd_boolean elf_s390_mkobject |
76 | PARAMS ((bfd *)); | |
5236c819 MS |
77 | static bfd_boolean elf_s390_object_p |
78 | PARAMS ((bfd *)); | |
69fc87f1 MS |
79 | static int elf_s390_tls_transition |
80 | PARAMS ((struct bfd_link_info *, int, int)); | |
81 | static bfd_reloc_status_type s390_tls_reloc | |
82 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
83 | static bfd_vma dtpoff_base | |
84 | PARAMS ((struct bfd_link_info *)); | |
85 | static bfd_vma tpoff | |
86 | PARAMS ((struct bfd_link_info *, bfd_vma)); | |
87 | static void invalid_tls_insn | |
88 | PARAMS ((bfd *, asection *, Elf_Internal_Rela *)); | |
a85d7ed0 | 89 | |
a85d7ed0 NC |
90 | #include "elf/s390.h" |
91 | ||
92 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value | |
93 | from smaller values. Start with zero, widen, *then* decrement. */ | |
94 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
95 | ||
96 | /* The relocation "howto" table. */ | |
97 | static reloc_howto_type elf_howto_table[] = | |
98 | { | |
99 | HOWTO (R_390_NONE, /* type */ | |
100 | 0, /* rightshift */ | |
101 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
102 | 0, /* bitsize */ | |
b34976b6 | 103 | FALSE, /* pc_relative */ |
a85d7ed0 NC |
104 | 0, /* bitpos */ |
105 | complain_overflow_dont, /* complain_on_overflow */ | |
106 | bfd_elf_generic_reloc, /* special_function */ | |
107 | "R_390_NONE", /* name */ | |
b34976b6 | 108 | FALSE, /* partial_inplace */ |
a85d7ed0 NC |
109 | 0, /* src_mask */ |
110 | 0, /* dst_mask */ | |
b34976b6 AM |
111 | FALSE), /* pcrel_offset */ |
112 | ||
5236c819 MS |
113 | HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, |
114 | bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE), | |
115 | HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
116 | bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE), | |
117 | HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
118 | bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE), | |
119 | HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
120 | bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE), | |
121 | HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
122 | bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE), | |
123 | HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
124 | bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE), | |
125 | HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
126 | bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE), | |
127 | HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
128 | bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE), | |
129 | HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
130 | bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE), | |
131 | HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
132 | bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE), | |
133 | HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
134 | bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE), | |
135 | HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, | |
136 | bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE), | |
137 | HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
138 | bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE), | |
139 | HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, | |
140 | bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE), | |
141 | HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
142 | bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE), | |
143 | HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
144 | bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE), | |
145 | HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
146 | bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE), | |
147 | HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
148 | bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE), | |
149 | HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
150 | bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE), | |
151 | HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
152 | bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE), | |
153 | HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
154 | bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE), | |
155 | HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
156 | bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE), | |
157 | HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, | |
158 | bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE), | |
159 | HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
160 | bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE), | |
161 | HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, | |
162 | bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE), | |
163 | HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
164 | bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE), | |
165 | HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
166 | bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE), | |
167 | HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
168 | bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE), | |
169 | HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
170 | bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE), | |
171 | HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
172 | bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE), | |
173 | HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
174 | bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE), | |
175 | HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
176 | bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE), | |
177 | HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
178 | bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE), | |
179 | HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
180 | bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE), | |
181 | HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
182 | bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE), | |
183 | HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
184 | bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE), | |
69fc87f1 MS |
185 | HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont, |
186 | s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE), | |
187 | HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
188 | s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE), | |
189 | HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
190 | s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE), | |
191 | EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */ | |
192 | HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
193 | bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE), | |
194 | HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
195 | bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE), | |
196 | EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */ | |
197 | HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
198 | bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE), | |
199 | EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */ | |
200 | HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
201 | bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE), | |
202 | EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */ | |
203 | HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
204 | bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE), | |
205 | HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
206 | bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE), | |
207 | EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */ | |
208 | HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
209 | bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE), | |
210 | EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */ | |
211 | HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
212 | bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE), | |
213 | HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
214 | bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE), | |
215 | HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
216 | bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE), | |
217 | HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, | |
218 | bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE), | |
a85d7ed0 NC |
219 | }; |
220 | ||
221 | /* GNU extension to record C++ vtable hierarchy. */ | |
222 | static reloc_howto_type elf64_s390_vtinherit_howto = | |
b34976b6 | 223 | HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE); |
a85d7ed0 | 224 | static reloc_howto_type elf64_s390_vtentry_howto = |
b34976b6 | 225 | HOWTO (R_390_GNU_VTENTRY, 0,4,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE); |
a85d7ed0 NC |
226 | |
227 | static reloc_howto_type * | |
228 | elf_s390_reloc_type_lookup (abfd, code) | |
229 | bfd *abfd ATTRIBUTE_UNUSED; | |
230 | bfd_reloc_code_real_type code; | |
231 | { | |
0451c93c MS |
232 | switch (code) |
233 | { | |
234 | case BFD_RELOC_NONE: | |
235 | return &elf_howto_table[(int) R_390_NONE]; | |
236 | case BFD_RELOC_8: | |
237 | return &elf_howto_table[(int) R_390_8]; | |
238 | case BFD_RELOC_390_12: | |
239 | return &elf_howto_table[(int) R_390_12]; | |
240 | case BFD_RELOC_16: | |
241 | return &elf_howto_table[(int) R_390_16]; | |
242 | case BFD_RELOC_32: | |
243 | return &elf_howto_table[(int) R_390_32]; | |
244 | case BFD_RELOC_CTOR: | |
245 | return &elf_howto_table[(int) R_390_32]; | |
246 | case BFD_RELOC_32_PCREL: | |
247 | return &elf_howto_table[(int) R_390_PC32]; | |
248 | case BFD_RELOC_390_GOT12: | |
249 | return &elf_howto_table[(int) R_390_GOT12]; | |
250 | case BFD_RELOC_32_GOT_PCREL: | |
251 | return &elf_howto_table[(int) R_390_GOT32]; | |
252 | case BFD_RELOC_390_PLT32: | |
253 | return &elf_howto_table[(int) R_390_PLT32]; | |
254 | case BFD_RELOC_390_COPY: | |
255 | return &elf_howto_table[(int) R_390_COPY]; | |
256 | case BFD_RELOC_390_GLOB_DAT: | |
257 | return &elf_howto_table[(int) R_390_GLOB_DAT]; | |
258 | case BFD_RELOC_390_JMP_SLOT: | |
259 | return &elf_howto_table[(int) R_390_JMP_SLOT]; | |
260 | case BFD_RELOC_390_RELATIVE: | |
261 | return &elf_howto_table[(int) R_390_RELATIVE]; | |
262 | case BFD_RELOC_32_GOTOFF: | |
5236c819 | 263 | return &elf_howto_table[(int) R_390_GOTOFF32]; |
0451c93c MS |
264 | case BFD_RELOC_390_GOTPC: |
265 | return &elf_howto_table[(int) R_390_GOTPC]; | |
266 | case BFD_RELOC_390_GOT16: | |
267 | return &elf_howto_table[(int) R_390_GOT16]; | |
268 | case BFD_RELOC_16_PCREL: | |
269 | return &elf_howto_table[(int) R_390_PC16]; | |
270 | case BFD_RELOC_390_PC16DBL: | |
271 | return &elf_howto_table[(int) R_390_PC16DBL]; | |
272 | case BFD_RELOC_390_PLT16DBL: | |
273 | return &elf_howto_table[(int) R_390_PLT16DBL]; | |
0451c93c MS |
274 | case BFD_RELOC_390_PC32DBL: |
275 | return &elf_howto_table[(int) R_390_PC32DBL]; | |
276 | case BFD_RELOC_390_PLT32DBL: | |
277 | return &elf_howto_table[(int) R_390_PLT32DBL]; | |
278 | case BFD_RELOC_390_GOTPCDBL: | |
279 | return &elf_howto_table[(int) R_390_GOTPCDBL]; | |
280 | case BFD_RELOC_64: | |
281 | return &elf_howto_table[(int) R_390_64]; | |
282 | case BFD_RELOC_64_PCREL: | |
283 | return &elf_howto_table[(int) R_390_PC64]; | |
284 | case BFD_RELOC_390_GOT64: | |
285 | return &elf_howto_table[(int) R_390_GOT64]; | |
286 | case BFD_RELOC_390_PLT64: | |
287 | return &elf_howto_table[(int) R_390_PLT64]; | |
288 | case BFD_RELOC_390_GOTENT: | |
289 | return &elf_howto_table[(int) R_390_GOTENT]; | |
5236c819 MS |
290 | case BFD_RELOC_16_GOTOFF: |
291 | return &elf_howto_table[(int) R_390_GOTOFF16]; | |
292 | case BFD_RELOC_390_GOTOFF64: | |
293 | return &elf_howto_table[(int) R_390_GOTOFF64]; | |
294 | case BFD_RELOC_390_GOTPLT12: | |
295 | return &elf_howto_table[(int) R_390_GOTPLT12]; | |
296 | case BFD_RELOC_390_GOTPLT16: | |
297 | return &elf_howto_table[(int) R_390_GOTPLT16]; | |
298 | case BFD_RELOC_390_GOTPLT32: | |
299 | return &elf_howto_table[(int) R_390_GOTPLT32]; | |
300 | case BFD_RELOC_390_GOTPLT64: | |
301 | return &elf_howto_table[(int) R_390_GOTPLT64]; | |
302 | case BFD_RELOC_390_GOTPLTENT: | |
303 | return &elf_howto_table[(int) R_390_GOTPLTENT]; | |
304 | case BFD_RELOC_390_PLTOFF16: | |
305 | return &elf_howto_table[(int) R_390_PLTOFF16]; | |
306 | case BFD_RELOC_390_PLTOFF32: | |
307 | return &elf_howto_table[(int) R_390_PLTOFF32]; | |
308 | case BFD_RELOC_390_PLTOFF64: | |
309 | return &elf_howto_table[(int) R_390_PLTOFF64]; | |
69fc87f1 MS |
310 | case BFD_RELOC_390_TLS_LOAD: |
311 | return &elf_howto_table[(int) R_390_TLS_LOAD]; | |
312 | case BFD_RELOC_390_TLS_GDCALL: | |
313 | return &elf_howto_table[(int) R_390_TLS_GDCALL]; | |
314 | case BFD_RELOC_390_TLS_LDCALL: | |
315 | return &elf_howto_table[(int) R_390_TLS_LDCALL]; | |
316 | case BFD_RELOC_390_TLS_GD64: | |
317 | return &elf_howto_table[(int) R_390_TLS_GD64]; | |
318 | case BFD_RELOC_390_TLS_GOTIE12: | |
319 | return &elf_howto_table[(int) R_390_TLS_GOTIE12]; | |
320 | case BFD_RELOC_390_TLS_GOTIE64: | |
321 | return &elf_howto_table[(int) R_390_TLS_GOTIE64]; | |
322 | case BFD_RELOC_390_TLS_LDM64: | |
323 | return &elf_howto_table[(int) R_390_TLS_LDM64]; | |
324 | case BFD_RELOC_390_TLS_IE64: | |
325 | return &elf_howto_table[(int) R_390_TLS_IE64]; | |
326 | case BFD_RELOC_390_TLS_IEENT: | |
327 | return &elf_howto_table[(int) R_390_TLS_IEENT]; | |
328 | case BFD_RELOC_390_TLS_LE64: | |
329 | return &elf_howto_table[(int) R_390_TLS_LE64]; | |
330 | case BFD_RELOC_390_TLS_LDO64: | |
331 | return &elf_howto_table[(int) R_390_TLS_LDO64]; | |
332 | case BFD_RELOC_390_TLS_DTPMOD: | |
333 | return &elf_howto_table[(int) R_390_TLS_DTPMOD]; | |
334 | case BFD_RELOC_390_TLS_DTPOFF: | |
335 | return &elf_howto_table[(int) R_390_TLS_DTPOFF]; | |
336 | case BFD_RELOC_390_TLS_TPOFF: | |
337 | return &elf_howto_table[(int) R_390_TLS_TPOFF]; | |
5236c819 MS |
338 | case BFD_RELOC_VTABLE_INHERIT: |
339 | return &elf64_s390_vtinherit_howto; | |
340 | case BFD_RELOC_VTABLE_ENTRY: | |
341 | return &elf64_s390_vtentry_howto; | |
0451c93c MS |
342 | default: |
343 | break; | |
344 | } | |
a85d7ed0 NC |
345 | return 0; |
346 | } | |
347 | ||
348 | /* We need to use ELF64_R_TYPE so we have our own copy of this function, | |
349 | and elf64-s390.c has its own copy. */ | |
350 | ||
351 | static void | |
352 | elf_s390_info_to_howto (abfd, cache_ptr, dst) | |
353 | bfd *abfd ATTRIBUTE_UNUSED; | |
354 | arelent *cache_ptr; | |
355 | Elf_Internal_Rela *dst; | |
356 | { | |
357 | switch (ELF64_R_TYPE(dst->r_info)) | |
358 | { | |
359 | case R_390_GNU_VTINHERIT: | |
360 | cache_ptr->howto = &elf64_s390_vtinherit_howto; | |
361 | break; | |
362 | ||
363 | case R_390_GNU_VTENTRY: | |
364 | cache_ptr->howto = &elf64_s390_vtentry_howto; | |
365 | break; | |
366 | ||
367 | default: | |
368 | BFD_ASSERT (ELF64_R_TYPE(dst->r_info) < (unsigned int) R_390_max); | |
369 | cache_ptr->howto = &elf_howto_table[ELF64_R_TYPE(dst->r_info)]; | |
99c79b2e | 370 | } |
a85d7ed0 NC |
371 | } |
372 | ||
69fc87f1 MS |
373 | /* A relocation function which doesn't do anything. */ |
374 | static bfd_reloc_status_type | |
375 | s390_tls_reloc (abfd, reloc_entry, symbol, data, input_section, | |
26e41594 | 376 | output_bfd, error_message) |
69fc87f1 MS |
377 | bfd *abfd ATTRIBUTE_UNUSED; |
378 | arelent *reloc_entry; | |
379 | asymbol *symbol ATTRIBUTE_UNUSED; | |
380 | PTR data ATTRIBUTE_UNUSED; | |
381 | asection *input_section; | |
382 | bfd *output_bfd; | |
383 | char **error_message ATTRIBUTE_UNUSED; | |
384 | { | |
385 | if (output_bfd) | |
386 | reloc_entry->address += input_section->output_offset; | |
387 | return bfd_reloc_ok; | |
388 | } | |
389 | ||
b34976b6 | 390 | static bfd_boolean |
a85d7ed0 NC |
391 | elf_s390_is_local_label_name (abfd, name) |
392 | bfd *abfd; | |
393 | const char *name; | |
394 | { | |
395 | if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L')) | |
b34976b6 | 396 | return TRUE; |
a85d7ed0 NC |
397 | |
398 | return _bfd_elf_is_local_label_name (abfd, name); | |
399 | } | |
400 | ||
401 | /* Functions for the 390 ELF linker. */ | |
402 | ||
403 | /* The name of the dynamic interpreter. This is put in the .interp | |
404 | section. */ | |
405 | ||
406 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
407 | ||
64285810 MS |
408 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
409 | copying dynamic variables from a shared lib into an app's dynbss | |
410 | section, and instead use a dynamic relocation to point into the | |
411 | shared lib. */ | |
412 | #define ELIMINATE_COPY_RELOCS 1 | |
413 | ||
a85d7ed0 NC |
414 | /* The size in bytes of the first entry in the procedure linkage table. */ |
415 | #define PLT_FIRST_ENTRY_SIZE 32 | |
416 | /* The size in bytes of an entry in the procedure linkage table. */ | |
99c79b2e | 417 | #define PLT_ENTRY_SIZE 32 |
a85d7ed0 NC |
418 | |
419 | #define GOT_ENTRY_SIZE 8 | |
420 | ||
421 | /* The first three entries in a procedure linkage table are reserved, | |
422 | and the initial contents are unimportant (we zero them out). | |
423 | Subsequent entries look like this. See the SVR4 ABI 386 | |
424 | supplement to see how this works. */ | |
425 | ||
426 | /* For the s390, simple addr offset can only be 0 - 4096. | |
427 | To use the full 16777216 TB address space, several instructions | |
428 | are needed to load an address in a register and execute | |
429 | a branch( or just saving the address) | |
430 | ||
99c79b2e | 431 | Furthermore, only r 0 and 1 are free to use!!! */ |
a85d7ed0 NC |
432 | |
433 | /* The first 3 words in the GOT are then reserved. | |
434 | Word 0 is the address of the dynamic table. | |
435 | Word 1 is a pointer to a structure describing the object | |
436 | Word 2 is used to point to the loader entry address. | |
437 | ||
438 | The code for PLT entries looks like this: | |
439 | ||
440 | The GOT holds the address in the PLT to be executed. | |
441 | The loader then gets: | |
442 | 24(15) = Pointer to the structure describing the object. | |
99c79b2e | 443 | 28(15) = Offset in symbol table |
a85d7ed0 NC |
444 | The loader must then find the module where the function is |
445 | and insert the address in the GOT. | |
446 | ||
447 | PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1 | |
448 | LG 1,0(1) # 6 bytes Load address from GOT in r1 | |
449 | BCR 15,1 # 2 bytes Jump to address | |
450 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
451 | LGF 1,12(1) # 6 bytes Load offset in symbl table in r1 | |
452 | BRCL 15,-x # 6 bytes Jump to start of PLT | |
453 | .long ? # 4 bytes offset into symbol table | |
454 | ||
455 | Total = 32 bytes per PLT entry | |
456 | Fixup at offset 2: relative address to GOT entry | |
457 | Fixup at offset 22: relative branch to PLT0 | |
458 | Fixup at offset 28: 32 bit offset into symbol table | |
459 | ||
460 | A 32 bit offset into the symbol table is enough. It allows for symbol | |
461 | tables up to a size of 2 gigabyte. A single dynamic object (the main | |
462 | program, any shared library) is limited to 4GB in size and I want to see | |
463 | the program that manages to have a symbol table of more than 2 GB with a | |
464 | total size of at max 4 GB. */ | |
465 | ||
dc810e39 AM |
466 | #define PLT_ENTRY_WORD0 (bfd_vma) 0xc0100000 |
467 | #define PLT_ENTRY_WORD1 (bfd_vma) 0x0000e310 | |
468 | #define PLT_ENTRY_WORD2 (bfd_vma) 0x10000004 | |
469 | #define PLT_ENTRY_WORD3 (bfd_vma) 0x07f10d10 | |
470 | #define PLT_ENTRY_WORD4 (bfd_vma) 0xe310100c | |
471 | #define PLT_ENTRY_WORD5 (bfd_vma) 0x0014c0f4 | |
472 | #define PLT_ENTRY_WORD6 (bfd_vma) 0x00000000 | |
473 | #define PLT_ENTRY_WORD7 (bfd_vma) 0x00000000 | |
a85d7ed0 NC |
474 | |
475 | /* The first PLT entry pushes the offset into the symbol table | |
476 | from R1 onto the stack at 8(15) and the loader object info | |
477 | at 12(15), loads the loader address in R1 and jumps to it. */ | |
478 | ||
479 | /* The first entry in the PLT: | |
480 | ||
481 | PLT0: | |
482 | STG 1,56(15) # r1 contains the offset into the symbol table | |
483 | LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table | |
484 | MVC 48(8,15),8(1) # move loader ino (object struct address) to stack | |
485 | LG 1,16(1) # get entry address of loader | |
486 | BCR 15,1 # jump to loader | |
487 | ||
488 | Fixup at offset 8: relative address to start of GOT. */ | |
489 | ||
dc810e39 AM |
490 | #define PLT_FIRST_ENTRY_WORD0 (bfd_vma) 0xe310f038 |
491 | #define PLT_FIRST_ENTRY_WORD1 (bfd_vma) 0x0024c010 | |
492 | #define PLT_FIRST_ENTRY_WORD2 (bfd_vma) 0x00000000 | |
493 | #define PLT_FIRST_ENTRY_WORD3 (bfd_vma) 0xd207f030 | |
494 | #define PLT_FIRST_ENTRY_WORD4 (bfd_vma) 0x1008e310 | |
495 | #define PLT_FIRST_ENTRY_WORD5 (bfd_vma) 0x10100004 | |
496 | #define PLT_FIRST_ENTRY_WORD6 (bfd_vma) 0x07f10700 | |
497 | #define PLT_FIRST_ENTRY_WORD7 (bfd_vma) 0x07000700 | |
a85d7ed0 NC |
498 | |
499 | /* The s390 linker needs to keep track of the number of relocs that it | |
0451c93c MS |
500 | decides to copy as dynamic relocs in check_relocs for each symbol. |
501 | This is so that it can later discard them if they are found to be | |
502 | unnecessary. We store the information in a field extending the | |
503 | regular ELF linker hash table. */ | |
a85d7ed0 | 504 | |
0451c93c | 505 | struct elf_s390_dyn_relocs |
a85d7ed0 | 506 | { |
0451c93c MS |
507 | struct elf_s390_dyn_relocs *next; |
508 | ||
509 | /* The input section of the reloc. */ | |
510 | asection *sec; | |
511 | ||
512 | /* Total number of relocs copied for the input section. */ | |
a85d7ed0 | 513 | bfd_size_type count; |
0451c93c MS |
514 | |
515 | /* Number of pc-relative relocs copied for the input section. */ | |
516 | bfd_size_type pc_count; | |
a85d7ed0 NC |
517 | }; |
518 | ||
519 | /* s390 ELF linker hash entry. */ | |
520 | ||
521 | struct elf_s390_link_hash_entry | |
522 | { | |
0451c93c | 523 | struct elf_link_hash_entry elf; |
a85d7ed0 | 524 | |
0451c93c MS |
525 | /* Track dynamic relocs copied for this symbol. */ |
526 | struct elf_s390_dyn_relocs *dyn_relocs; | |
5236c819 MS |
527 | |
528 | /* Number of GOTPLT references for a function. */ | |
529 | bfd_signed_vma gotplt_refcount; | |
69fc87f1 MS |
530 | |
531 | #define GOT_UNKNOWN 0 | |
532 | #define GOT_NORMAL 1 | |
533 | #define GOT_TLS_GD 2 | |
534 | #define GOT_TLS_IE 3 | |
535 | #define GOT_TLS_IE_NLT 3 | |
536 | unsigned char tls_type; | |
a85d7ed0 NC |
537 | }; |
538 | ||
69fc87f1 MS |
539 | #define elf_s390_hash_entry(ent) \ |
540 | ((struct elf_s390_link_hash_entry *)(ent)) | |
541 | ||
542 | struct elf_s390_obj_tdata | |
543 | { | |
544 | struct elf_obj_tdata root; | |
545 | ||
546 | /* tls_type for each local got entry. */ | |
547 | char *local_got_tls_type; | |
548 | }; | |
549 | ||
550 | #define elf_s390_tdata(abfd) \ | |
551 | ((struct elf_s390_obj_tdata *) (abfd)->tdata.any) | |
552 | ||
553 | #define elf_s390_local_got_tls_type(abfd) \ | |
554 | (elf_s390_tdata (abfd)->local_got_tls_type) | |
555 | ||
556 | static bfd_boolean | |
557 | elf_s390_mkobject (abfd) | |
558 | bfd *abfd; | |
559 | { | |
560 | bfd_size_type amt = sizeof (struct elf_s390_obj_tdata); | |
561 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
562 | if (abfd->tdata.any == NULL) | |
563 | return FALSE; | |
564 | return TRUE; | |
565 | } | |
566 | ||
567 | static bfd_boolean | |
568 | elf_s390_object_p (abfd) | |
569 | bfd *abfd; | |
570 | { | |
571 | /* Allocate our special target data. */ | |
572 | struct elf_s390_obj_tdata *new_tdata; | |
573 | bfd_size_type amt = sizeof (struct elf_s390_obj_tdata); | |
574 | new_tdata = bfd_zalloc (abfd, amt); | |
575 | if (new_tdata == NULL) | |
576 | return FALSE; | |
577 | new_tdata->root = *abfd->tdata.elf_obj_data; | |
578 | abfd->tdata.any = new_tdata; | |
579 | /* Set the right machine number for an s390 elf32 file. */ | |
580 | return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64); | |
581 | } | |
582 | ||
a85d7ed0 NC |
583 | /* s390 ELF linker hash table. */ |
584 | ||
585 | struct elf_s390_link_hash_table | |
586 | { | |
0451c93c | 587 | struct elf_link_hash_table elf; |
a85d7ed0 | 588 | |
0451c93c MS |
589 | /* Short-cuts to get to dynamic linker sections. */ |
590 | asection *sgot; | |
591 | asection *sgotplt; | |
592 | asection *srelgot; | |
593 | asection *splt; | |
594 | asection *srelplt; | |
595 | asection *sdynbss; | |
596 | asection *srelbss; | |
ec338859 | 597 | |
69fc87f1 MS |
598 | union { |
599 | bfd_signed_vma refcount; | |
600 | bfd_vma offset; | |
601 | } tls_ldm_got; | |
602 | ||
ec338859 AM |
603 | /* Small local sym to section mapping cache. */ |
604 | struct sym_sec_cache sym_sec; | |
0451c93c | 605 | }; |
a85d7ed0 NC |
606 | |
607 | /* Get the s390 ELF linker hash table from a link_info structure. */ | |
608 | ||
609 | #define elf_s390_hash_table(p) \ | |
610 | ((struct elf_s390_link_hash_table *) ((p)->hash)) | |
611 | ||
612 | /* Create an entry in an s390 ELF linker hash table. */ | |
613 | ||
614 | static struct bfd_hash_entry * | |
0451c93c | 615 | link_hash_newfunc (entry, table, string) |
a85d7ed0 NC |
616 | struct bfd_hash_entry *entry; |
617 | struct bfd_hash_table *table; | |
618 | const char *string; | |
619 | { | |
a85d7ed0 NC |
620 | /* Allocate the structure if it has not already been allocated by a |
621 | subclass. */ | |
0451c93c MS |
622 | if (entry == NULL) |
623 | { | |
624 | entry = bfd_hash_allocate (table, | |
625 | sizeof (struct elf_s390_link_hash_entry)); | |
626 | if (entry == NULL) | |
627 | return entry; | |
628 | } | |
a85d7ed0 NC |
629 | |
630 | /* Call the allocation method of the superclass. */ | |
0451c93c MS |
631 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
632 | if (entry != NULL) | |
a85d7ed0 | 633 | { |
0451c93c MS |
634 | struct elf_s390_link_hash_entry *eh; |
635 | ||
636 | eh = (struct elf_s390_link_hash_entry *) entry; | |
637 | eh->dyn_relocs = NULL; | |
5236c819 | 638 | eh->gotplt_refcount = 0; |
69fc87f1 | 639 | eh->tls_type = GOT_UNKNOWN; |
a85d7ed0 NC |
640 | } |
641 | ||
0451c93c | 642 | return entry; |
a85d7ed0 NC |
643 | } |
644 | ||
645 | /* Create an s390 ELF linker hash table. */ | |
646 | ||
647 | static struct bfd_link_hash_table * | |
648 | elf_s390_link_hash_table_create (abfd) | |
649 | bfd *abfd; | |
650 | { | |
651 | struct elf_s390_link_hash_table *ret; | |
dc810e39 | 652 | bfd_size_type amt = sizeof (struct elf_s390_link_hash_table); |
a85d7ed0 | 653 | |
e2d34d7d | 654 | ret = (struct elf_s390_link_hash_table *) bfd_malloc (amt); |
0451c93c | 655 | if (ret == NULL) |
a85d7ed0 NC |
656 | return NULL; |
657 | ||
0451c93c | 658 | if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc)) |
a85d7ed0 | 659 | { |
e2d34d7d | 660 | free (ret); |
a85d7ed0 NC |
661 | return NULL; |
662 | } | |
663 | ||
0451c93c MS |
664 | ret->sgot = NULL; |
665 | ret->sgotplt = NULL; | |
666 | ret->srelgot = NULL; | |
667 | ret->splt = NULL; | |
668 | ret->srelplt = NULL; | |
669 | ret->sdynbss = NULL; | |
670 | ret->srelbss = NULL; | |
69fc87f1 | 671 | ret->tls_ldm_got.refcount = 0; |
ec338859 | 672 | ret->sym_sec.abfd = NULL; |
0451c93c MS |
673 | |
674 | return &ret->elf.root; | |
675 | } | |
676 | ||
677 | /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up | |
678 | shortcuts to them in our hash table. */ | |
679 | ||
b34976b6 | 680 | static bfd_boolean |
0451c93c MS |
681 | create_got_section (dynobj, info) |
682 | bfd *dynobj; | |
683 | struct bfd_link_info *info; | |
684 | { | |
685 | struct elf_s390_link_hash_table *htab; | |
686 | ||
687 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 688 | return FALSE; |
0451c93c MS |
689 | |
690 | htab = elf_s390_hash_table (info); | |
691 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); | |
692 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
693 | if (!htab->sgot || !htab->sgotplt) | |
694 | abort (); | |
695 | ||
696 | htab->srelgot = bfd_make_section (dynobj, ".rela.got"); | |
697 | if (htab->srelgot == NULL | |
698 | || ! bfd_set_section_flags (dynobj, htab->srelgot, | |
699 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
700 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
701 | | SEC_READONLY)) | |
99881371 | 702 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3)) |
b34976b6 AM |
703 | return FALSE; |
704 | return TRUE; | |
0451c93c MS |
705 | } |
706 | ||
707 | /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and | |
708 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our | |
709 | hash table. */ | |
710 | ||
b34976b6 | 711 | static bfd_boolean |
0451c93c MS |
712 | elf_s390_create_dynamic_sections (dynobj, info) |
713 | bfd *dynobj; | |
714 | struct bfd_link_info *info; | |
715 | { | |
716 | struct elf_s390_link_hash_table *htab; | |
717 | ||
718 | htab = elf_s390_hash_table (info); | |
719 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
b34976b6 | 720 | return FALSE; |
0451c93c MS |
721 | |
722 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
b34976b6 | 723 | return FALSE; |
0451c93c MS |
724 | |
725 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
726 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
727 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
728 | if (!info->shared) | |
729 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
730 | ||
731 | if (!htab->splt || !htab->srelplt || !htab->sdynbss | |
732 | || (!info->shared && !htab->srelbss)) | |
733 | abort (); | |
734 | ||
b34976b6 | 735 | return TRUE; |
a85d7ed0 NC |
736 | } |
737 | ||
0451c93c MS |
738 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
739 | ||
740 | static void | |
b48fa14c AM |
741 | elf_s390_copy_indirect_symbol (bed, dir, ind) |
742 | struct elf_backend_data *bed; | |
0451c93c MS |
743 | struct elf_link_hash_entry *dir, *ind; |
744 | { | |
745 | struct elf_s390_link_hash_entry *edir, *eind; | |
746 | ||
747 | edir = (struct elf_s390_link_hash_entry *) dir; | |
748 | eind = (struct elf_s390_link_hash_entry *) ind; | |
749 | ||
750 | if (eind->dyn_relocs != NULL) | |
751 | { | |
752 | if (edir->dyn_relocs != NULL) | |
753 | { | |
754 | struct elf_s390_dyn_relocs **pp; | |
755 | struct elf_s390_dyn_relocs *p; | |
756 | ||
757 | if (ind->root.type == bfd_link_hash_indirect) | |
758 | abort (); | |
759 | ||
760 | /* Add reloc counts against the weak sym to the strong sym | |
761 | list. Merge any entries against the same section. */ | |
762 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
763 | { | |
764 | struct elf_s390_dyn_relocs *q; | |
765 | ||
766 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
767 | if (q->sec == p->sec) | |
768 | { | |
769 | q->pc_count += p->pc_count; | |
770 | q->count += p->count; | |
771 | *pp = p->next; | |
772 | break; | |
773 | } | |
774 | if (q == NULL) | |
775 | pp = &p->next; | |
776 | } | |
777 | *pp = edir->dyn_relocs; | |
778 | } | |
779 | ||
780 | edir->dyn_relocs = eind->dyn_relocs; | |
781 | eind->dyn_relocs = NULL; | |
782 | } | |
783 | ||
69fc87f1 MS |
784 | if (ind->root.type == bfd_link_hash_indirect |
785 | && dir->got.refcount <= 0) | |
786 | { | |
787 | edir->tls_type = eind->tls_type; | |
788 | eind->tls_type = GOT_UNKNOWN; | |
789 | } | |
790 | ||
64285810 MS |
791 | if (ELIMINATE_COPY_RELOCS |
792 | && ind->root.type != bfd_link_hash_indirect | |
793 | && (dir->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0) | |
794 | /* If called to transfer flags for a weakdef during processing | |
795 | of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF. | |
796 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
797 | dir->elf_link_hash_flags |= | |
798 | (ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC | |
799 | | ELF_LINK_HASH_REF_REGULAR | |
800 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK)); | |
801 | else | |
802 | _bfd_elf_link_hash_copy_indirect (bed, dir, ind); | |
0451c93c | 803 | } |
a85d7ed0 | 804 | |
69fc87f1 MS |
805 | static int |
806 | elf_s390_tls_transition (info, r_type, is_local) | |
807 | struct bfd_link_info *info; | |
808 | int r_type; | |
809 | int is_local; | |
810 | { | |
811 | if (info->shared) | |
812 | return r_type; | |
813 | ||
814 | switch (r_type) | |
815 | { | |
816 | case R_390_TLS_GD64: | |
817 | case R_390_TLS_IE64: | |
818 | if (is_local) | |
819 | return R_390_TLS_LE64; | |
820 | return R_390_TLS_IE64; | |
821 | case R_390_TLS_GOTIE64: | |
822 | if (is_local) | |
823 | return R_390_TLS_LE64; | |
824 | return R_390_TLS_GOTIE64; | |
825 | case R_390_TLS_LDM64: | |
826 | return R_390_TLS_LE64; | |
827 | } | |
828 | ||
829 | return r_type; | |
830 | } | |
831 | ||
a85d7ed0 NC |
832 | /* Look through the relocs for a section during the first phase, and |
833 | allocate space in the global offset table or procedure linkage | |
834 | table. */ | |
835 | ||
b34976b6 | 836 | static bfd_boolean |
a85d7ed0 NC |
837 | elf_s390_check_relocs (abfd, info, sec, relocs) |
838 | bfd *abfd; | |
839 | struct bfd_link_info *info; | |
840 | asection *sec; | |
841 | const Elf_Internal_Rela *relocs; | |
842 | { | |
0451c93c | 843 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
844 | Elf_Internal_Shdr *symtab_hdr; |
845 | struct elf_link_hash_entry **sym_hashes; | |
a85d7ed0 NC |
846 | const Elf_Internal_Rela *rel; |
847 | const Elf_Internal_Rela *rel_end; | |
a85d7ed0 | 848 | asection *sreloc; |
5236c819 | 849 | bfd_signed_vma *local_got_refcounts; |
69fc87f1 | 850 | int tls_type, old_tls_type; |
a85d7ed0 NC |
851 | |
852 | if (info->relocateable) | |
b34976b6 | 853 | return TRUE; |
a85d7ed0 | 854 | |
0451c93c | 855 | htab = elf_s390_hash_table (info); |
a85d7ed0 NC |
856 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
857 | sym_hashes = elf_sym_hashes (abfd); | |
5236c819 | 858 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 859 | |
a85d7ed0 NC |
860 | sreloc = NULL; |
861 | ||
862 | rel_end = relocs + sec->reloc_count; | |
863 | for (rel = relocs; rel < rel_end; rel++) | |
864 | { | |
69fc87f1 | 865 | unsigned int r_type; |
a85d7ed0 NC |
866 | unsigned long r_symndx; |
867 | struct elf_link_hash_entry *h; | |
868 | ||
869 | r_symndx = ELF64_R_SYM (rel->r_info); | |
870 | ||
0451c93c MS |
871 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
872 | { | |
873 | (*_bfd_error_handler) (_("%s: bad symbol index: %d"), | |
874 | bfd_archive_filename (abfd), | |
875 | r_symndx); | |
b34976b6 | 876 | return FALSE; |
0451c93c MS |
877 | } |
878 | ||
a85d7ed0 NC |
879 | if (r_symndx < symtab_hdr->sh_info) |
880 | h = NULL; | |
881 | else | |
99c79b2e | 882 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
a85d7ed0 | 883 | |
5236c819 MS |
884 | /* Create got section and local_got_refcounts array if they |
885 | are needed. */ | |
69fc87f1 MS |
886 | r_type = elf_s390_tls_transition (info, |
887 | ELF64_R_TYPE (rel->r_info), | |
888 | h == NULL); | |
889 | switch (r_type) | |
a85d7ed0 NC |
890 | { |
891 | case R_390_GOT12: | |
947216bf | 892 | case R_390_GOT16: |
a85d7ed0 NC |
893 | case R_390_GOT32: |
894 | case R_390_GOT64: | |
895 | case R_390_GOTENT: | |
5236c819 MS |
896 | case R_390_GOTPLT12: |
897 | case R_390_GOTPLT16: | |
898 | case R_390_GOTPLT32: | |
899 | case R_390_GOTPLT64: | |
900 | case R_390_GOTPLTENT: | |
69fc87f1 MS |
901 | case R_390_TLS_GD64: |
902 | case R_390_TLS_GOTIE12: | |
903 | case R_390_TLS_GOTIE64: | |
904 | case R_390_TLS_IEENT: | |
905 | case R_390_TLS_IE64: | |
906 | case R_390_TLS_LDM64: | |
5236c819 MS |
907 | if (h == NULL |
908 | && local_got_refcounts == NULL) | |
a85d7ed0 | 909 | { |
5236c819 | 910 | bfd_size_type size; |
0451c93c | 911 | |
5236c819 | 912 | size = symtab_hdr->sh_info; |
69fc87f1 | 913 | size *= (sizeof (bfd_signed_vma) + sizeof(char)); |
5236c819 MS |
914 | local_got_refcounts = ((bfd_signed_vma *) |
915 | bfd_zalloc (abfd, size)); | |
a85d7ed0 | 916 | if (local_got_refcounts == NULL) |
5236c819 MS |
917 | return FALSE; |
918 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
69fc87f1 MS |
919 | elf_s390_local_got_tls_type (abfd) |
920 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
a85d7ed0 | 921 | } |
5236c819 MS |
922 | /* Fall through. */ |
923 | case R_390_GOTOFF16: | |
924 | case R_390_GOTOFF32: | |
925 | case R_390_GOTOFF64: | |
0451c93c MS |
926 | case R_390_GOTPC: |
927 | case R_390_GOTPCDBL: | |
928 | if (htab->sgot == NULL) | |
929 | { | |
930 | if (htab->elf.dynobj == NULL) | |
931 | htab->elf.dynobj = abfd; | |
932 | if (!create_got_section (htab->elf.dynobj, info)) | |
b34976b6 | 933 | return FALSE; |
0451c93c | 934 | } |
5236c819 MS |
935 | } |
936 | ||
69fc87f1 | 937 | switch (r_type) |
5236c819 | 938 | { |
5236c819 MS |
939 | case R_390_GOTOFF16: |
940 | case R_390_GOTOFF32: | |
941 | case R_390_GOTOFF64: | |
942 | case R_390_GOTPC: | |
943 | case R_390_GOTPCDBL: | |
944 | /* Got is created, nothing to be done. */ | |
0451c93c | 945 | break; |
ec338859 | 946 | |
947216bf | 947 | case R_390_PLT16DBL: |
a85d7ed0 NC |
948 | case R_390_PLT32: |
949 | case R_390_PLT32DBL: | |
950 | case R_390_PLT64: | |
5236c819 MS |
951 | case R_390_PLTOFF16: |
952 | case R_390_PLTOFF32: | |
953 | case R_390_PLTOFF64: | |
a85d7ed0 | 954 | /* This symbol requires a procedure linkage table entry. We |
947216bf AM |
955 | actually build the entry in adjust_dynamic_symbol, |
956 | because this might be a case of linking PIC code which is | |
957 | never referenced by a dynamic object, in which case we | |
958 | don't need to generate a procedure linkage table entry | |
959 | after all. */ | |
ec338859 | 960 | |
a85d7ed0 | 961 | /* If this is a local symbol, we resolve it directly without |
947216bf | 962 | creating a procedure linkage table entry. */ |
5236c819 MS |
963 | if (h != NULL) |
964 | { | |
965 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
966 | h->plt.refcount += 1; | |
967 | } | |
968 | break; | |
ec338859 | 969 | |
5236c819 MS |
970 | case R_390_GOTPLT12: |
971 | case R_390_GOTPLT16: | |
972 | case R_390_GOTPLT32: | |
973 | case R_390_GOTPLT64: | |
974 | case R_390_GOTPLTENT: | |
975 | /* This symbol requires either a procedure linkage table entry | |
976 | or an entry in the local got. We actually build the entry | |
977 | in adjust_dynamic_symbol because whether this is really a | |
978 | global reference can change and with it the fact if we have | |
979 | to create a plt entry or a local got entry. To be able to | |
980 | make a once global symbol a local one we have to keep track | |
981 | of the number of gotplt references that exist for this | |
982 | symbol. */ | |
983 | if (h != NULL) | |
984 | { | |
985 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++; | |
986 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
987 | h->plt.refcount += 1; | |
988 | } | |
69fc87f1 MS |
989 | else |
990 | local_got_refcounts[r_symndx] += 1; | |
991 | break; | |
992 | ||
993 | case R_390_TLS_LDM64: | |
994 | htab->tls_ldm_got.refcount += 1; | |
995 | break; | |
996 | ||
997 | case R_390_TLS_IE64: | |
998 | case R_390_TLS_GOTIE12: | |
999 | case R_390_TLS_GOTIE64: | |
1000 | case R_390_TLS_IEENT: | |
1001 | if (info->shared) | |
1002 | info->flags |= DF_STATIC_TLS; | |
1003 | /* Fall through */ | |
1004 | ||
1005 | case R_390_GOT12: | |
26e41594 | 1006 | case R_390_GOT16: |
69fc87f1 MS |
1007 | case R_390_GOT32: |
1008 | case R_390_GOT64: | |
1009 | case R_390_GOTENT: | |
1010 | case R_390_TLS_GD64: | |
1011 | /* This symbol requires a global offset table entry. */ | |
1012 | switch (r_type) | |
1013 | { | |
1014 | default: | |
1015 | case R_390_GOT12: | |
1016 | case R_390_GOT16: | |
1017 | case R_390_GOT32: | |
1018 | case R_390_GOTENT: | |
1019 | tls_type = GOT_NORMAL; | |
1020 | break; | |
1021 | case R_390_TLS_GD64: | |
1022 | tls_type = GOT_TLS_GD; | |
1023 | break; | |
1024 | case R_390_TLS_IE64: | |
1025 | case R_390_TLS_GOTIE64: | |
1026 | tls_type = GOT_TLS_IE; | |
1027 | break; | |
1028 | case R_390_TLS_GOTIE12: | |
1029 | case R_390_TLS_IEENT: | |
1030 | tls_type = GOT_TLS_IE_NLT; | |
1031 | break; | |
1032 | } | |
1033 | ||
1034 | if (h != NULL) | |
1035 | { | |
1036 | h->got.refcount += 1; | |
1037 | old_tls_type = elf_s390_hash_entry(h)->tls_type; | |
1038 | } | |
5236c819 MS |
1039 | else |
1040 | { | |
1041 | local_got_refcounts[r_symndx] += 1; | |
69fc87f1 | 1042 | old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx]; |
5236c819 | 1043 | } |
69fc87f1 MS |
1044 | /* If a TLS symbol is accessed using IE at least once, |
1045 | there is no point to use dynamic model for it. */ | |
1046 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN) | |
1047 | { | |
1048 | if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL) | |
1049 | { | |
1050 | (*_bfd_error_handler) | |
1051 | (_("%s: `%s' accessed both as normal and thread local symbol"), | |
1052 | bfd_archive_filename (abfd), h->root.root.string); | |
1053 | return FALSE; | |
1054 | } | |
1055 | if (old_tls_type > tls_type) | |
1056 | tls_type = old_tls_type; | |
1057 | } | |
1058 | ||
1059 | if (old_tls_type != tls_type) | |
1060 | { | |
1061 | if (h != NULL) | |
1062 | elf_s390_hash_entry (h)->tls_type = tls_type; | |
1063 | else | |
1064 | elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1065 | } | |
1066 | ||
1067 | if (r_type != R_390_TLS_IE64) | |
1068 | break; | |
1069 | /* Fall through */ | |
1070 | ||
1071 | case R_390_TLS_LE64: | |
1072 | if (!info->shared) | |
1073 | break; | |
1074 | info->flags |= DF_STATIC_TLS; | |
1075 | /* Fall through */ | |
ec338859 | 1076 | |
947216bf AM |
1077 | case R_390_8: |
1078 | case R_390_16: | |
a85d7ed0 NC |
1079 | case R_390_32: |
1080 | case R_390_64: | |
947216bf AM |
1081 | case R_390_PC16: |
1082 | case R_390_PC16DBL: | |
a85d7ed0 NC |
1083 | case R_390_PC32: |
1084 | case R_390_PC32DBL: | |
1085 | case R_390_PC64: | |
0451c93c MS |
1086 | if (h != NULL && !info->shared) |
1087 | { | |
1088 | /* If this reloc is in a read-only section, we might | |
1089 | need a copy reloc. We can't check reliably at this | |
1090 | stage whether the section is read-only, as input | |
1091 | sections have not yet been mapped to output sections. | |
1092 | Tentatively set the flag for now, and correct in | |
1093 | adjust_dynamic_symbol. */ | |
1094 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
ec338859 | 1095 | |
0451c93c MS |
1096 | /* We may need a .plt entry if the function this reloc |
1097 | refers to is in a shared lib. */ | |
1098 | h->plt.refcount += 1; | |
1099 | } | |
ec338859 | 1100 | |
a85d7ed0 | 1101 | /* If we are creating a shared library, and this is a reloc |
0451c93c MS |
1102 | against a global symbol, or a non PC relative reloc |
1103 | against a local symbol, then we need to copy the reloc | |
1104 | into the shared library. However, if we are linking with | |
1105 | -Bsymbolic, we do not need to copy a reloc against a | |
1106 | global symbol which is defined in an object we are | |
1107 | including in the link (i.e., DEF_REGULAR is set). At | |
1108 | this point we have not seen all the input files, so it is | |
1109 | possible that DEF_REGULAR is not set now but will be set | |
1110 | later (it is never cleared). In case of a weak definition, | |
1111 | DEF_REGULAR may be cleared later by a strong definition in | |
1112 | a shared library. We account for that possibility below by | |
1113 | storing information in the relocs_copied field of the hash | |
1114 | table entry. A similar situation occurs when creating | |
1115 | shared libraries and symbol visibility changes render the | |
1116 | symbol local. | |
1117 | ||
1118 | If on the other hand, we are creating an executable, we | |
1119 | may need to keep relocations for symbols satisfied by a | |
1120 | dynamic library if we manage to avoid copy relocs for the | |
1121 | symbol. */ | |
1122 | if ((info->shared | |
1123 | && (sec->flags & SEC_ALLOC) != 0 | |
1124 | && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16 | |
1125 | && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL | |
1126 | && ELF64_R_TYPE (rel->r_info) != R_390_PC32 | |
1127 | && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL | |
1128 | && ELF64_R_TYPE (rel->r_info) != R_390_PC64) | |
1129 | || (h != NULL | |
1130 | && (! info->symbolic | |
1131 | || h->root.type == bfd_link_hash_defweak | |
1132 | || (h->elf_link_hash_flags | |
1133 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
64285810 MS |
1134 | || (ELIMINATE_COPY_RELOCS |
1135 | && !info->shared | |
0451c93c MS |
1136 | && (sec->flags & SEC_ALLOC) != 0 |
1137 | && h != NULL | |
1138 | && (h->root.type == bfd_link_hash_defweak | |
1139 | || (h->elf_link_hash_flags | |
1140 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
a85d7ed0 | 1141 | { |
ec338859 AM |
1142 | struct elf_s390_dyn_relocs *p; |
1143 | struct elf_s390_dyn_relocs **head; | |
1144 | ||
0451c93c MS |
1145 | /* We must copy these reloc types into the output file. |
1146 | Create a reloc section in dynobj and make room for | |
1147 | this reloc. */ | |
a85d7ed0 NC |
1148 | if (sreloc == NULL) |
1149 | { | |
1150 | const char *name; | |
0451c93c | 1151 | bfd *dynobj; |
ec338859 | 1152 | |
a85d7ed0 NC |
1153 | name = (bfd_elf_string_from_elf_section |
1154 | (abfd, | |
1155 | elf_elfheader (abfd)->e_shstrndx, | |
1156 | elf_section_data (sec)->rel_hdr.sh_name)); | |
1157 | if (name == NULL) | |
b34976b6 | 1158 | return FALSE; |
ec338859 | 1159 | |
0451c93c MS |
1160 | if (strncmp (name, ".rela", 5) != 0 |
1161 | || strcmp (bfd_get_section_name (abfd, sec), | |
1162 | name + 5) != 0) | |
1163 | { | |
1164 | (*_bfd_error_handler) | |
1165 | (_("%s: bad relocation section name `%s\'"), | |
1166 | bfd_archive_filename (abfd), name); | |
1167 | } | |
ec338859 | 1168 | |
0451c93c MS |
1169 | if (htab->elf.dynobj == NULL) |
1170 | htab->elf.dynobj = abfd; | |
a85d7ed0 | 1171 | |
0451c93c | 1172 | dynobj = htab->elf.dynobj; |
a85d7ed0 NC |
1173 | sreloc = bfd_get_section_by_name (dynobj, name); |
1174 | if (sreloc == NULL) | |
1175 | { | |
1176 | flagword flags; | |
ec338859 | 1177 | |
a85d7ed0 NC |
1178 | sreloc = bfd_make_section (dynobj, name); |
1179 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
1180 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1181 | if ((sec->flags & SEC_ALLOC) != 0) | |
1182 | flags |= SEC_ALLOC | SEC_LOAD; | |
1183 | if (sreloc == NULL | |
1184 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
99881371 | 1185 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 1186 | return FALSE; |
a85d7ed0 | 1187 | } |
0451c93c | 1188 | elf_section_data (sec)->sreloc = sreloc; |
a85d7ed0 | 1189 | } |
ec338859 | 1190 | |
0451c93c MS |
1191 | /* If this is a global symbol, we count the number of |
1192 | relocations we need for this symbol. */ | |
1193 | if (h != NULL) | |
a85d7ed0 | 1194 | { |
ec338859 | 1195 | head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs; |
0451c93c MS |
1196 | } |
1197 | else | |
1198 | { | |
ec338859 AM |
1199 | /* Track dynamic relocs needed for local syms too. |
1200 | We really need local syms available to do this | |
1201 | easily. Oh well. */ | |
1202 | ||
1203 | asection *s; | |
1204 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
1205 | sec, r_symndx); | |
1206 | if (s == NULL) | |
b34976b6 | 1207 | return FALSE; |
ec338859 AM |
1208 | |
1209 | head = ((struct elf_s390_dyn_relocs **) | |
1210 | &elf_section_data (s)->local_dynrel); | |
1211 | } | |
1212 | ||
1213 | p = *head; | |
1214 | if (p == NULL || p->sec != sec) | |
1215 | { | |
1216 | bfd_size_type amt = sizeof *p; | |
1217 | p = ((struct elf_s390_dyn_relocs *) | |
1218 | bfd_alloc (htab->elf.dynobj, amt)); | |
1219 | if (p == NULL) | |
b34976b6 | 1220 | return FALSE; |
ec338859 AM |
1221 | p->next = *head; |
1222 | *head = p; | |
1223 | p->sec = sec; | |
1224 | p->count = 0; | |
1225 | p->pc_count = 0; | |
a85d7ed0 | 1226 | } |
ec338859 AM |
1227 | |
1228 | p->count += 1; | |
1229 | if (ELF64_R_TYPE (rel->r_info) == R_390_PC16 | |
1230 | || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL | |
1231 | || ELF64_R_TYPE (rel->r_info) == R_390_PC32 | |
1232 | || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL | |
1233 | || ELF64_R_TYPE (rel->r_info) == R_390_PC64) | |
1234 | p->pc_count += 1; | |
a85d7ed0 | 1235 | } |
a85d7ed0 | 1236 | break; |
ec338859 | 1237 | |
a85d7ed0 NC |
1238 | /* This relocation describes the C++ object vtable hierarchy. |
1239 | Reconstruct it for later use during GC. */ | |
947216bf AM |
1240 | case R_390_GNU_VTINHERIT: |
1241 | if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 1242 | return FALSE; |
947216bf | 1243 | break; |
ec338859 | 1244 | |
a85d7ed0 NC |
1245 | /* This relocation describes which C++ vtable entries are actually |
1246 | used. Record for later use during GC. */ | |
947216bf AM |
1247 | case R_390_GNU_VTENTRY: |
1248 | if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 1249 | return FALSE; |
947216bf | 1250 | break; |
ec338859 | 1251 | |
a85d7ed0 NC |
1252 | default: |
1253 | break; | |
1254 | } | |
1255 | } | |
1256 | ||
b34976b6 | 1257 | return TRUE; |
a85d7ed0 NC |
1258 | } |
1259 | ||
1260 | /* Return the section that should be marked against GC for a given | |
1261 | relocation. */ | |
1262 | ||
1263 | static asection * | |
1e2f5b6e AM |
1264 | elf_s390_gc_mark_hook (sec, info, rel, h, sym) |
1265 | asection *sec; | |
a85d7ed0 NC |
1266 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
1267 | Elf_Internal_Rela *rel; | |
1268 | struct elf_link_hash_entry *h; | |
1269 | Elf_Internal_Sym *sym; | |
1270 | { | |
1271 | if (h != NULL) | |
1272 | { | |
1273 | switch (ELF64_R_TYPE (rel->r_info)) | |
1274 | { | |
1275 | case R_390_GNU_VTINHERIT: | |
1276 | case R_390_GNU_VTENTRY: | |
1277 | break; | |
1278 | ||
1279 | default: | |
1280 | switch (h->root.type) | |
1281 | { | |
1282 | case bfd_link_hash_defined: | |
1283 | case bfd_link_hash_defweak: | |
1284 | return h->root.u.def.section; | |
1285 | ||
1286 | case bfd_link_hash_common: | |
1287 | return h->root.u.c.p->section; | |
1288 | ||
1289 | default: | |
1290 | break; | |
1291 | } | |
1292 | } | |
1293 | } | |
1294 | else | |
1e2f5b6e | 1295 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
a85d7ed0 NC |
1296 | |
1297 | return NULL; | |
1298 | } | |
1299 | ||
1300 | /* Update the got entry reference counts for the section being removed. */ | |
1301 | ||
b34976b6 | 1302 | static bfd_boolean |
a85d7ed0 | 1303 | elf_s390_gc_sweep_hook (abfd, info, sec, relocs) |
0451c93c MS |
1304 | bfd *abfd; |
1305 | struct bfd_link_info *info; | |
1306 | asection *sec; | |
1307 | const Elf_Internal_Rela *relocs; | |
a85d7ed0 NC |
1308 | { |
1309 | Elf_Internal_Shdr *symtab_hdr; | |
1310 | struct elf_link_hash_entry **sym_hashes; | |
1311 | bfd_signed_vma *local_got_refcounts; | |
1312 | const Elf_Internal_Rela *rel, *relend; | |
a85d7ed0 | 1313 | |
ec338859 | 1314 | elf_section_data (sec)->local_dynrel = NULL; |
a85d7ed0 | 1315 | |
0451c93c MS |
1316 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1317 | sym_hashes = elf_sym_hashes (abfd); | |
1318 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
a85d7ed0 NC |
1319 | |
1320 | relend = relocs + sec->reloc_count; | |
1321 | for (rel = relocs; rel < relend; rel++) | |
5236c819 | 1322 | { |
26e41594 AM |
1323 | unsigned long r_symndx; |
1324 | unsigned int r_type; | |
1325 | struct elf_link_hash_entry *h = NULL; | |
1326 | ||
5236c819 | 1327 | r_symndx = ELF64_R_SYM (rel->r_info); |
26e41594 AM |
1328 | if (r_symndx >= symtab_hdr->sh_info) |
1329 | { | |
1330 | struct elf_s390_link_hash_entry *eh; | |
1331 | struct elf_s390_dyn_relocs **pp; | |
1332 | struct elf_s390_dyn_relocs *p; | |
5236c819 | 1333 | |
26e41594 AM |
1334 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1335 | eh = (struct elf_s390_link_hash_entry *) h; | |
5236c819 | 1336 | |
26e41594 AM |
1337 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
1338 | if (p->sec == sec) | |
1339 | { | |
1340 | /* Everything must go for SEC. */ | |
1341 | *pp = p->next; | |
1342 | break; | |
1343 | } | |
1344 | } | |
1345 | ||
1346 | r_type = ELF64_R_TYPE (rel->r_info); | |
1347 | r_type = elf_s390_tls_transition (info, r_type, h != NULL); | |
69fc87f1 | 1348 | switch (r_type) |
5236c819 | 1349 | { |
69fc87f1 MS |
1350 | case R_390_TLS_LDM64: |
1351 | if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0) | |
1352 | elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1; | |
1353 | break; | |
1354 | ||
1355 | case R_390_TLS_GD64: | |
1356 | case R_390_TLS_IE64: | |
1357 | case R_390_TLS_GOTIE12: | |
1358 | case R_390_TLS_GOTIE64: | |
1359 | case R_390_TLS_IEENT: | |
5236c819 MS |
1360 | case R_390_GOT12: |
1361 | case R_390_GOT16: | |
1362 | case R_390_GOT32: | |
1363 | case R_390_GOT64: | |
1364 | case R_390_GOTOFF16: | |
1365 | case R_390_GOTOFF32: | |
1366 | case R_390_GOTOFF64: | |
1367 | case R_390_GOTPC: | |
1368 | case R_390_GOTPCDBL: | |
1369 | case R_390_GOTENT: | |
1370 | if (h != NULL) | |
1371 | { | |
1372 | if (h->got.refcount > 0) | |
1373 | h->got.refcount -= 1; | |
1374 | } | |
1375 | else if (local_got_refcounts != NULL) | |
1376 | { | |
1377 | if (local_got_refcounts[r_symndx] > 0) | |
1378 | local_got_refcounts[r_symndx] -= 1; | |
1379 | } | |
26e41594 | 1380 | break; |
a85d7ed0 | 1381 | |
5236c819 MS |
1382 | case R_390_8: |
1383 | case R_390_12: | |
1384 | case R_390_16: | |
1385 | case R_390_32: | |
1386 | case R_390_64: | |
1387 | case R_390_PC16: | |
1388 | case R_390_PC16DBL: | |
1389 | case R_390_PC32: | |
1390 | case R_390_PC32DBL: | |
1391 | case R_390_PC64: | |
26e41594 AM |
1392 | if (info->shared) |
1393 | break; | |
1394 | /* Fall through */ | |
a85d7ed0 | 1395 | |
69fc87f1 MS |
1396 | case R_390_PLT16DBL: |
1397 | case R_390_PLT32: | |
1398 | case R_390_PLT32DBL: | |
1399 | case R_390_PLT64: | |
1400 | case R_390_PLTOFF16: | |
1401 | case R_390_PLTOFF32: | |
1402 | case R_390_PLTOFF64: | |
1403 | if (h != NULL) | |
1404 | { | |
1405 | if (h->plt.refcount > 0) | |
1406 | h->plt.refcount -= 1; | |
1407 | } | |
1408 | break; | |
1409 | ||
1410 | case R_390_GOTPLT12: | |
1411 | case R_390_GOTPLT16: | |
1412 | case R_390_GOTPLT32: | |
1413 | case R_390_GOTPLT64: | |
1414 | case R_390_GOTPLTENT: | |
1415 | if (h != NULL) | |
1416 | { | |
1417 | if (h->plt.refcount > 0) | |
1418 | { | |
1419 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--; | |
1420 | h->plt.refcount -= 1; | |
1421 | } | |
1422 | } | |
1423 | else if (local_got_refcounts != NULL) | |
1424 | { | |
1425 | if (local_got_refcounts[r_symndx] > 0) | |
1426 | local_got_refcounts[r_symndx] -= 1; | |
1427 | } | |
1428 | break; | |
1429 | ||
5236c819 MS |
1430 | default: |
1431 | break; | |
1432 | } | |
1433 | } | |
a85d7ed0 | 1434 | |
b34976b6 | 1435 | return TRUE; |
a85d7ed0 NC |
1436 | } |
1437 | ||
5236c819 MS |
1438 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
1439 | entry but we found we will not create any. Called when we find we will | |
1440 | not have any PLT for this symbol, by for example | |
1441 | elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
1442 | or elf_s390_size_dynamic_sections if no dynamic sections will be | |
1443 | created (we're only linking static objects). */ | |
1444 | ||
1445 | static void | |
1446 | elf_s390_adjust_gotplt (h) | |
1447 | struct elf_s390_link_hash_entry *h; | |
1448 | { | |
1449 | if (h->elf.root.type == bfd_link_hash_warning) | |
1450 | h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link; | |
1451 | ||
1452 | if (h->gotplt_refcount <= 0) | |
1453 | return; | |
1454 | ||
1455 | /* We simply add the number of gotplt references to the number | |
1456 | * of got references for this symbol. */ | |
1457 | h->elf.got.refcount += h->gotplt_refcount; | |
1458 | h->gotplt_refcount = -1; | |
1459 | } | |
1460 | ||
a85d7ed0 NC |
1461 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1462 | regular object. The current definition is in some section of the | |
1463 | dynamic object, but we're not including those sections. We have to | |
1464 | change the definition to something the rest of the link can | |
1465 | understand. */ | |
1466 | ||
b34976b6 | 1467 | static bfd_boolean |
a85d7ed0 NC |
1468 | elf_s390_adjust_dynamic_symbol (info, h) |
1469 | struct bfd_link_info *info; | |
1470 | struct elf_link_hash_entry *h; | |
1471 | { | |
0451c93c | 1472 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
1473 | asection *s; |
1474 | unsigned int power_of_two; | |
1475 | ||
a85d7ed0 NC |
1476 | /* If this is a function, put it in the procedure linkage table. We |
1477 | will fill in the contents of the procedure linkage table later | |
cedb70c5 | 1478 | (although we could actually do it here). */ |
a85d7ed0 NC |
1479 | if (h->type == STT_FUNC |
1480 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
1481 | { | |
0451c93c MS |
1482 | if (h->plt.refcount <= 0 |
1483 | || (! info->shared | |
1484 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 | |
f9cd9119 MS |
1485 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0 |
1486 | && h->root.type != bfd_link_hash_undefweak | |
1487 | && h->root.type != bfd_link_hash_undefined)) | |
a85d7ed0 NC |
1488 | { |
1489 | /* This case can occur if we saw a PLT32 reloc in an input | |
947216bf AM |
1490 | file, but the symbol was never referred to by a dynamic |
1491 | object, or if all references were garbage collected. In | |
0451c93c MS |
1492 | such a case, we don't actually need to build a procedure |
1493 | linkage table, and we can just do a PC32 reloc instead. */ | |
a85d7ed0 NC |
1494 | h->plt.offset = (bfd_vma) -1; |
1495 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
5236c819 | 1496 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
a85d7ed0 NC |
1497 | } |
1498 | ||
b34976b6 | 1499 | return TRUE; |
a85d7ed0 | 1500 | } |
bbd7ec4a | 1501 | else |
0451c93c MS |
1502 | /* It's possible that we incorrectly decided a .plt reloc was |
1503 | needed for an R_390_PC32 reloc to a non-function sym in | |
1504 | check_relocs. We can't decide accurately between function and | |
1505 | non-function syms in check-relocs; Objects loaded later in | |
1506 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1507 | h->plt.offset = (bfd_vma) -1; |
a85d7ed0 NC |
1508 | |
1509 | /* If this is a weak symbol, and there is a real definition, the | |
1510 | processor independent code will have arranged for us to see the | |
1511 | real definition first, and we can just use the same value. */ | |
1512 | if (h->weakdef != NULL) | |
1513 | { | |
1514 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
1515 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1516 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1517 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
64285810 MS |
1518 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
1519 | h->elf_link_hash_flags | |
1520 | = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF) | |
1521 | | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF)); | |
b34976b6 | 1522 | return TRUE; |
a85d7ed0 NC |
1523 | } |
1524 | ||
1525 | /* This is a reference to a symbol defined by a dynamic object which | |
1526 | is not a function. */ | |
1527 | ||
1528 | /* If we are creating a shared library, we must presume that the | |
1529 | only references to the symbol are via the global offset table. | |
1530 | For such cases we need not do anything here; the relocations will | |
1531 | be handled correctly by relocate_section. */ | |
1532 | if (info->shared) | |
b34976b6 | 1533 | return TRUE; |
a85d7ed0 NC |
1534 | |
1535 | /* If there are no references to this symbol that do not use the | |
1536 | GOT, we don't need to generate a copy reloc. */ | |
1537 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
b34976b6 | 1538 | return TRUE; |
a85d7ed0 | 1539 | |
0451c93c MS |
1540 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1541 | if (info->nocopyreloc) | |
1542 | { | |
1543 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
b34976b6 | 1544 | return TRUE; |
0451c93c MS |
1545 | } |
1546 | ||
64285810 | 1547 | if (ELIMINATE_COPY_RELOCS) |
0451c93c | 1548 | { |
64285810 MS |
1549 | struct elf_s390_link_hash_entry * eh; |
1550 | struct elf_s390_dyn_relocs *p; | |
0451c93c | 1551 | |
64285810 MS |
1552 | eh = (struct elf_s390_link_hash_entry *) h; |
1553 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1554 | { | |
1555 | s = p->sec->output_section; | |
1556 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1557 | break; | |
1558 | } | |
1559 | ||
1560 | /* If we didn't find any dynamic relocs in read-only sections, then | |
1561 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1562 | if (p == NULL) | |
1563 | { | |
1564 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
1565 | return TRUE; | |
1566 | } | |
0451c93c MS |
1567 | } |
1568 | ||
a85d7ed0 NC |
1569 | /* We must allocate the symbol in our .dynbss section, which will |
1570 | become part of the .bss section of the executable. There will be | |
1571 | an entry for this symbol in the .dynsym section. The dynamic | |
1572 | object will contain position independent code, so all references | |
1573 | from the dynamic object to this symbol will go through the global | |
1574 | offset table. The dynamic linker will use the .dynsym entry to | |
1575 | determine the address it must put in the global offset table, so | |
1576 | both the dynamic object and the regular object will refer to the | |
1577 | same memory location for the variable. */ | |
1578 | ||
0451c93c | 1579 | htab = elf_s390_hash_table (info); |
a85d7ed0 | 1580 | |
0451c93c MS |
1581 | /* We must generate a R_390_COPY reloc to tell the dynamic linker to |
1582 | copy the initial value out of the dynamic object and into the | |
1583 | runtime process image. */ | |
a85d7ed0 NC |
1584 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
1585 | { | |
0451c93c | 1586 | htab->srelbss->_raw_size += sizeof (Elf64_External_Rela); |
a85d7ed0 NC |
1587 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
1588 | } | |
1589 | ||
1590 | /* We need to figure out the alignment required for this symbol. I | |
1591 | have no idea how ELF linkers handle this. */ | |
1592 | power_of_two = bfd_log2 (h->size); | |
1593 | if (power_of_two > 3) | |
1594 | power_of_two = 3; | |
1595 | ||
1596 | /* Apply the required alignment. */ | |
0451c93c MS |
1597 | s = htab->sdynbss; |
1598 | s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two)); | |
1599 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) | |
a85d7ed0 | 1600 | { |
0451c93c | 1601 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 1602 | return FALSE; |
a85d7ed0 NC |
1603 | } |
1604 | ||
1605 | /* Define the symbol as being at this point in the section. */ | |
1606 | h->root.u.def.section = s; | |
1607 | h->root.u.def.value = s->_raw_size; | |
1608 | ||
1609 | /* Increment the section size to make room for the symbol. */ | |
1610 | s->_raw_size += h->size; | |
1611 | ||
b34976b6 | 1612 | return TRUE; |
a85d7ed0 NC |
1613 | } |
1614 | ||
0451c93c MS |
1615 | /* This is the condition under which elf_s390_finish_dynamic_symbol |
1616 | will be called from elflink.h. If elflink.h doesn't call our | |
1617 | finish_dynamic_symbol routine, we'll need to do something about | |
1618 | initializing any .plt and .got entries in elf_s390_relocate_section. */ | |
1619 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \ | |
1620 | ((DYN) \ | |
1621 | && ((INFO)->shared \ | |
1622 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ | |
1623 | && ((H)->dynindx != -1 \ | |
1624 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) | |
1625 | ||
1626 | /* Allocate space in .plt, .got and associated reloc sections for | |
1627 | dynamic relocs. */ | |
1628 | ||
b34976b6 | 1629 | static bfd_boolean |
0451c93c MS |
1630 | allocate_dynrelocs (h, inf) |
1631 | struct elf_link_hash_entry *h; | |
1632 | PTR inf; | |
1633 | { | |
1634 | struct bfd_link_info *info; | |
1635 | struct elf_s390_link_hash_table *htab; | |
1636 | struct elf_s390_link_hash_entry *eh; | |
1637 | struct elf_s390_dyn_relocs *p; | |
1638 | ||
e92d460e | 1639 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1640 | return TRUE; |
0451c93c | 1641 | |
e92d460e | 1642 | if (h->root.type == bfd_link_hash_warning) |
5236c819 MS |
1643 | /* When warning symbols are created, they **replace** the "real" |
1644 | entry in the hash table, thus we never get to see the real | |
1645 | symbol in a hash traversal. So look at it now. */ | |
e92d460e AM |
1646 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
1647 | ||
0451c93c MS |
1648 | info = (struct bfd_link_info *) inf; |
1649 | htab = elf_s390_hash_table (info); | |
1650 | ||
1651 | if (htab->elf.dynamic_sections_created | |
82058a73 MS |
1652 | && h->plt.refcount > 0 |
1653 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
1654 | || h->root.type != bfd_link_hash_undefweak)) | |
0451c93c MS |
1655 | { |
1656 | /* Make sure this symbol is output as a dynamic symbol. | |
1657 | Undefined weak syms won't yet be marked as dynamic. */ | |
1658 | if (h->dynindx == -1 | |
1659 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1660 | { | |
1661 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1662 | return FALSE; |
0451c93c MS |
1663 | } |
1664 | ||
82058a73 MS |
1665 | if (info->shared |
1666 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h)) | |
0451c93c MS |
1667 | { |
1668 | asection *s = htab->splt; | |
1669 | ||
1670 | /* If this is the first .plt entry, make room for the special | |
1671 | first entry. */ | |
1672 | if (s->_raw_size == 0) | |
1673 | s->_raw_size += PLT_FIRST_ENTRY_SIZE; | |
1674 | ||
1675 | h->plt.offset = s->_raw_size; | |
1676 | ||
1677 | /* If this symbol is not defined in a regular file, and we are | |
1678 | not generating a shared library, then set the symbol to this | |
1679 | location in the .plt. This is required to make function | |
1680 | pointers compare as equal between the normal executable and | |
1681 | the shared library. */ | |
1682 | if (! info->shared | |
1683 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1684 | { | |
1685 | h->root.u.def.section = s; | |
1686 | h->root.u.def.value = h->plt.offset; | |
1687 | } | |
ec338859 | 1688 | |
0451c93c MS |
1689 | /* Make room for this entry. */ |
1690 | s->_raw_size += PLT_ENTRY_SIZE; | |
ec338859 | 1691 | |
0451c93c MS |
1692 | /* We also need to make an entry in the .got.plt section, which |
1693 | will be placed in the .got section by the linker script. */ | |
1694 | htab->sgotplt->_raw_size += GOT_ENTRY_SIZE; | |
1695 | ||
1696 | /* We also need to make an entry in the .rela.plt section. */ | |
1697 | htab->srelplt->_raw_size += sizeof (Elf64_External_Rela); | |
1698 | } | |
1699 | else | |
1700 | { | |
1701 | h->plt.offset = (bfd_vma) -1; | |
1702 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
5236c819 | 1703 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c MS |
1704 | } |
1705 | } | |
1706 | else | |
1707 | { | |
1708 | h->plt.offset = (bfd_vma) -1; | |
1709 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
5236c819 | 1710 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c MS |
1711 | } |
1712 | ||
69fc87f1 MS |
1713 | /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to |
1714 | the binary, we can optimize a bit. IE64 and GOTIE64 get converted | |
1715 | to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT | |
1716 | we can save the dynamic TLS relocation. */ | |
1717 | if (h->got.refcount > 0 | |
1718 | && !info->shared | |
1719 | && h->dynindx == -1 | |
1720 | && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE) | |
1721 | { | |
1722 | if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT) | |
1723 | /* For the GOTIE access without a literal pool entry the offset has | |
1724 | to be stored somewhere. The immediate value in the instruction | |
1725 | is not bit enough so the value is stored in the got. */ | |
1726 | { | |
1727 | h->got.offset = htab->sgot->_raw_size; | |
1728 | htab->sgot->_raw_size += GOT_ENTRY_SIZE; | |
1729 | } | |
1730 | else | |
1731 | h->got.offset = (bfd_vma) -1; | |
1732 | } | |
1733 | else if (h->got.refcount > 0) | |
0451c93c MS |
1734 | { |
1735 | asection *s; | |
b34976b6 | 1736 | bfd_boolean dyn; |
69fc87f1 | 1737 | int tls_type = elf_s390_hash_entry(h)->tls_type; |
0451c93c MS |
1738 | |
1739 | /* Make sure this symbol is output as a dynamic symbol. | |
1740 | Undefined weak syms won't yet be marked as dynamic. */ | |
1741 | if (h->dynindx == -1 | |
1742 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1743 | { | |
1744 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1745 | return FALSE; |
0451c93c MS |
1746 | } |
1747 | ||
1748 | s = htab->sgot; | |
1749 | h->got.offset = s->_raw_size; | |
1750 | s->_raw_size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1751 | /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */ |
1752 | if (tls_type == GOT_TLS_GD) | |
1753 | s->_raw_size += GOT_ENTRY_SIZE; | |
0451c93c | 1754 | dyn = htab->elf.dynamic_sections_created; |
69fc87f1 MS |
1755 | /* R_390_TLS_IE64 needs one dynamic relocation, |
1756 | R_390_TLS_GD64 needs one if local symbol and two if global. */ | |
1757 | if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1758 | || tls_type >= GOT_TLS_IE) | |
1759 | htab->srelgot->_raw_size += sizeof (Elf64_External_Rela); | |
1760 | else if (tls_type == GOT_TLS_GD) | |
1761 | htab->srelgot->_raw_size += 2 * sizeof (Elf64_External_Rela); | |
82058a73 MS |
1762 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1763 | || h->root.type != bfd_link_hash_undefweak) | |
1764 | && (info->shared | |
1765 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
0451c93c MS |
1766 | htab->srelgot->_raw_size += sizeof (Elf64_External_Rela); |
1767 | } | |
1768 | else | |
1769 | h->got.offset = (bfd_vma) -1; | |
1770 | ||
1771 | eh = (struct elf_s390_link_hash_entry *) h; | |
1772 | if (eh->dyn_relocs == NULL) | |
b34976b6 | 1773 | return TRUE; |
0451c93c MS |
1774 | |
1775 | /* In the shared -Bsymbolic case, discard space allocated for | |
1776 | dynamic pc-relative relocs against symbols which turn out to be | |
1777 | defined in regular objects. For the normal shared case, discard | |
1778 | space for pc-relative relocs that have become local due to symbol | |
1779 | visibility changes. */ | |
1780 | ||
1781 | if (info->shared) | |
1782 | { | |
1783 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
1784 | && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 | |
1785 | || info->symbolic)) | |
1786 | { | |
1787 | struct elf_s390_dyn_relocs **pp; | |
1788 | ||
1789 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1790 | { | |
1791 | p->count -= p->pc_count; | |
1792 | p->pc_count = 0; | |
1793 | if (p->count == 0) | |
1794 | *pp = p->next; | |
1795 | else | |
1796 | pp = &p->next; | |
1797 | } | |
1798 | } | |
82058a73 MS |
1799 | |
1800 | /* Also discard relocs on undefined weak syms with non-default | |
1801 | visibility. */ | |
1802 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1803 | && h->root.type == bfd_link_hash_undefweak) | |
1804 | eh->dyn_relocs = NULL; | |
0451c93c | 1805 | } |
64285810 | 1806 | else if (ELIMINATE_COPY_RELOCS) |
0451c93c MS |
1807 | { |
1808 | /* For the non-shared case, discard space for relocs against | |
1809 | symbols which turn out to need copy relocs or are not | |
1810 | dynamic. */ | |
1811 | ||
1812 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
1813 | && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
1814 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1815 | || (htab->elf.dynamic_sections_created | |
1816 | && (h->root.type == bfd_link_hash_undefweak | |
1817 | || h->root.type == bfd_link_hash_undefined)))) | |
1818 | { | |
1819 | /* Make sure this symbol is output as a dynamic symbol. | |
1820 | Undefined weak syms won't yet be marked as dynamic. */ | |
1821 | if (h->dynindx == -1 | |
1822 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1823 | { | |
1824 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1825 | return FALSE; |
0451c93c MS |
1826 | } |
1827 | ||
1828 | /* If that succeeded, we know we'll be keeping all the | |
1829 | relocs. */ | |
1830 | if (h->dynindx != -1) | |
1831 | goto keep; | |
1832 | } | |
1833 | ||
1834 | eh->dyn_relocs = NULL; | |
1835 | ||
ec338859 | 1836 | keep: ; |
0451c93c MS |
1837 | } |
1838 | ||
1839 | /* Finally, allocate space. */ | |
1840 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1841 | { | |
1842 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
1843 | sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela); | |
1844 | } | |
1845 | ||
b34976b6 | 1846 | return TRUE; |
0451c93c MS |
1847 | } |
1848 | ||
1849 | /* Find any dynamic relocs that apply to read-only sections. */ | |
1850 | ||
b34976b6 | 1851 | static bfd_boolean |
0451c93c MS |
1852 | readonly_dynrelocs (h, inf) |
1853 | struct elf_link_hash_entry *h; | |
1854 | PTR inf; | |
1855 | { | |
1856 | struct elf_s390_link_hash_entry *eh; | |
1857 | struct elf_s390_dyn_relocs *p; | |
1858 | ||
e92d460e AM |
1859 | if (h->root.type == bfd_link_hash_warning) |
1860 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1861 | ||
0451c93c MS |
1862 | eh = (struct elf_s390_link_hash_entry *) h; |
1863 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1864 | { | |
1865 | asection *s = p->sec->output_section; | |
1866 | ||
1867 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1868 | { | |
1869 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
1870 | ||
1871 | info->flags |= DF_TEXTREL; | |
1872 | ||
1873 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 1874 | return FALSE; |
0451c93c MS |
1875 | } |
1876 | } | |
b34976b6 | 1877 | return TRUE; |
0451c93c MS |
1878 | } |
1879 | ||
a85d7ed0 NC |
1880 | /* Set the sizes of the dynamic sections. */ |
1881 | ||
b34976b6 | 1882 | static bfd_boolean |
a85d7ed0 | 1883 | elf_s390_size_dynamic_sections (output_bfd, info) |
29c2fb7c | 1884 | bfd *output_bfd ATTRIBUTE_UNUSED; |
a85d7ed0 NC |
1885 | struct bfd_link_info *info; |
1886 | { | |
0451c93c | 1887 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
1888 | bfd *dynobj; |
1889 | asection *s; | |
b34976b6 | 1890 | bfd_boolean relocs; |
0451c93c | 1891 | bfd *ibfd; |
a85d7ed0 | 1892 | |
0451c93c MS |
1893 | htab = elf_s390_hash_table (info); |
1894 | dynobj = htab->elf.dynobj; | |
1895 | if (dynobj == NULL) | |
1896 | abort (); | |
a85d7ed0 | 1897 | |
0451c93c | 1898 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
1899 | { |
1900 | /* Set the contents of the .interp section to the interpreter. */ | |
1901 | if (! info->shared) | |
1902 | { | |
1903 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
0451c93c MS |
1904 | if (s == NULL) |
1905 | abort (); | |
a85d7ed0 NC |
1906 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
1907 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
1908 | } | |
1909 | } | |
a85d7ed0 | 1910 | |
0451c93c MS |
1911 | /* Set up .got offsets for local syms, and space for local dynamic |
1912 | relocs. */ | |
1913 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
a85d7ed0 | 1914 | { |
0451c93c MS |
1915 | bfd_signed_vma *local_got; |
1916 | bfd_signed_vma *end_local_got; | |
69fc87f1 | 1917 | char *local_tls_type; |
0451c93c MS |
1918 | bfd_size_type locsymcount; |
1919 | Elf_Internal_Shdr *symtab_hdr; | |
1920 | asection *srela; | |
a85d7ed0 | 1921 | |
0451c93c | 1922 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
a85d7ed0 NC |
1923 | continue; |
1924 | ||
0451c93c | 1925 | for (s = ibfd->sections; s != NULL; s = s->next) |
a85d7ed0 | 1926 | { |
ec338859 | 1927 | struct elf_s390_dyn_relocs *p; |
0451c93c | 1928 | |
ec338859 AM |
1929 | for (p = *((struct elf_s390_dyn_relocs **) |
1930 | &elf_section_data (s)->local_dynrel); | |
1931 | p != NULL; | |
1932 | p = p->next) | |
a85d7ed0 | 1933 | { |
ec338859 AM |
1934 | if (!bfd_is_abs_section (p->sec) |
1935 | && bfd_is_abs_section (p->sec->output_section)) | |
1936 | { | |
1937 | /* Input section has been discarded, either because | |
1938 | it is a copy of a linkonce section or due to | |
1939 | linker script /DISCARD/, so we'll be discarding | |
1940 | the relocs too. */ | |
1941 | } | |
248866a8 | 1942 | else if (p->count != 0) |
ec338859 AM |
1943 | { |
1944 | srela = elf_section_data (p->sec)->sreloc; | |
1945 | srela->_raw_size += p->count * sizeof (Elf64_External_Rela); | |
248866a8 AM |
1946 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
1947 | info->flags |= DF_TEXTREL; | |
ec338859 | 1948 | } |
a85d7ed0 NC |
1949 | } |
1950 | } | |
0451c93c MS |
1951 | |
1952 | local_got = elf_local_got_refcounts (ibfd); | |
1953 | if (!local_got) | |
1954 | continue; | |
1955 | ||
1956 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
1957 | locsymcount = symtab_hdr->sh_info; | |
1958 | end_local_got = local_got + locsymcount; | |
69fc87f1 | 1959 | local_tls_type = elf_s390_local_got_tls_type (ibfd); |
0451c93c MS |
1960 | s = htab->sgot; |
1961 | srela = htab->srelgot; | |
69fc87f1 | 1962 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
a85d7ed0 | 1963 | { |
0451c93c | 1964 | if (*local_got > 0) |
a85d7ed0 | 1965 | { |
0451c93c MS |
1966 | *local_got = s->_raw_size; |
1967 | s->_raw_size += GOT_ENTRY_SIZE; | |
69fc87f1 MS |
1968 | if (*local_tls_type == GOT_TLS_GD) |
1969 | s->_raw_size += GOT_ENTRY_SIZE; | |
0451c93c MS |
1970 | if (info->shared) |
1971 | srela->_raw_size += sizeof (Elf64_External_Rela); | |
a85d7ed0 NC |
1972 | } |
1973 | else | |
0451c93c | 1974 | *local_got = (bfd_vma) -1; |
a85d7ed0 | 1975 | } |
0451c93c MS |
1976 | } |
1977 | ||
69fc87f1 MS |
1978 | if (htab->tls_ldm_got.refcount > 0) |
1979 | { | |
1980 | /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64 | |
1981 | relocs. */ | |
1982 | htab->tls_ldm_got.offset = htab->sgot->_raw_size; | |
1983 | htab->sgot->_raw_size += 2 * GOT_ENTRY_SIZE; | |
1984 | htab->srelgot->_raw_size += sizeof (Elf64_External_Rela); | |
1985 | } | |
1986 | else | |
1987 | htab->tls_ldm_got.offset = -1; | |
1988 | ||
0451c93c MS |
1989 | /* Allocate global sym .plt and .got entries, and space for global |
1990 | sym dynamic relocs. */ | |
1991 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); | |
1992 | ||
1993 | /* We now have determined the sizes of the various dynamic sections. | |
1994 | Allocate memory for them. */ | |
b34976b6 | 1995 | relocs = FALSE; |
0451c93c MS |
1996 | for (s = dynobj->sections; s != NULL; s = s->next) |
1997 | { | |
1998 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1999 | continue; | |
2000 | ||
2001 | if (s == htab->splt | |
2002 | || s == htab->sgot | |
2003 | || s == htab->sgotplt) | |
2004 | { | |
2005 | /* Strip this section if we don't need it; see the | |
2006 | comment below. */ | |
2007 | } | |
2008 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) | |
2009 | { | |
2010 | if (s->_raw_size != 0 && s != htab->srelplt) | |
b34976b6 | 2011 | relocs = TRUE; |
ec338859 | 2012 | |
0451c93c MS |
2013 | /* We use the reloc_count field as a counter if we need |
2014 | to copy relocs into the output file. */ | |
2015 | s->reloc_count = 0; | |
2016 | } | |
2017 | else | |
a85d7ed0 NC |
2018 | { |
2019 | /* It's not one of our sections, so don't allocate space. */ | |
2020 | continue; | |
2021 | } | |
2022 | ||
0451c93c | 2023 | if (s->_raw_size == 0) |
a85d7ed0 | 2024 | { |
0451c93c MS |
2025 | /* If we don't need this section, strip it from the |
2026 | output file. This is to handle .rela.bss and | |
2027 | .rela.plt. We must create it in | |
2028 | create_dynamic_sections, because it must be created | |
2029 | before the linker maps input sections to output | |
2030 | sections. The linker does that before | |
2031 | adjust_dynamic_symbol is called, and it is that | |
2032 | function which decides whether anything needs to go | |
2033 | into these sections. */ | |
2034 | ||
a85d7ed0 NC |
2035 | _bfd_strip_section_from_output (info, s); |
2036 | continue; | |
2037 | } | |
2038 | ||
0451c93c MS |
2039 | /* Allocate memory for the section contents. We use bfd_zalloc |
2040 | here in case unused entries are not reclaimed before the | |
2041 | section's contents are written out. This should not happen, | |
2042 | but this way if it does, we get a R_390_NONE reloc instead | |
2043 | of garbage. */ | |
2044 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); | |
2045 | if (s->contents == NULL) | |
b34976b6 | 2046 | return FALSE; |
a85d7ed0 NC |
2047 | } |
2048 | ||
0451c93c | 2049 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
2050 | { |
2051 | /* Add some entries to the .dynamic section. We fill in the | |
2052 | values later, in elf_s390_finish_dynamic_sections, but we | |
2053 | must add the entries now so that we get the correct size for | |
2054 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2055 | dynamic linker and used by the debugger. */ | |
dc810e39 AM |
2056 | #define add_dynamic_entry(TAG, VAL) \ |
2057 | bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) | |
2058 | ||
a85d7ed0 NC |
2059 | if (! info->shared) |
2060 | { | |
dc810e39 | 2061 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2062 | return FALSE; |
a85d7ed0 NC |
2063 | } |
2064 | ||
0451c93c | 2065 | if (htab->splt->_raw_size != 0) |
a85d7ed0 | 2066 | { |
dc810e39 AM |
2067 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2068 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2069 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2070 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2071 | return FALSE; |
a85d7ed0 NC |
2072 | } |
2073 | ||
2074 | if (relocs) | |
947216bf AM |
2075 | { |
2076 | if (!add_dynamic_entry (DT_RELA, 0) | |
2077 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2078 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 2079 | return FALSE; |
ec338859 | 2080 | |
0451c93c MS |
2081 | /* If any dynamic relocs apply to a read-only section, |
2082 | then we need a DT_TEXTREL entry. */ | |
248866a8 AM |
2083 | if ((info->flags & DF_TEXTREL) == 0) |
2084 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, | |
2085 | (PTR) info); | |
ec338859 | 2086 | |
0451c93c MS |
2087 | if ((info->flags & DF_TEXTREL) != 0) |
2088 | { | |
2089 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2090 | return FALSE; |
0451c93c | 2091 | } |
a85d7ed0 NC |
2092 | } |
2093 | } | |
dc810e39 | 2094 | #undef add_dynamic_entry |
a85d7ed0 | 2095 | |
b34976b6 | 2096 | return TRUE; |
a85d7ed0 NC |
2097 | } |
2098 | ||
69fc87f1 MS |
2099 | /* Return the base VMA address which should be subtracted from real addresses |
2100 | when resolving @dtpoff relocation. | |
2101 | This is PT_TLS segment p_vaddr. */ | |
2102 | ||
2103 | static bfd_vma | |
2104 | dtpoff_base (info) | |
2105 | struct bfd_link_info *info; | |
2106 | { | |
2107 | /* If tls_segment is NULL, we should have signalled an error already. */ | |
2108 | if (elf_hash_table (info)->tls_segment == NULL) | |
2109 | return 0; | |
2110 | return elf_hash_table (info)->tls_segment->start; | |
2111 | } | |
2112 | ||
2113 | /* Return the relocation value for @tpoff relocation | |
2114 | if STT_TLS virtual address is ADDRESS. */ | |
2115 | ||
2116 | static bfd_vma | |
2117 | tpoff (info, address) | |
2118 | struct bfd_link_info *info; | |
2119 | bfd_vma address; | |
2120 | { | |
2121 | struct elf_link_tls_segment *tls_segment | |
2122 | = elf_hash_table (info)->tls_segment; | |
2123 | ||
2124 | /* If tls_segment is NULL, we should have signalled an error already. */ | |
2125 | if (tls_segment == NULL) | |
2126 | return 0; | |
2127 | return (align_power (tls_segment->size, tls_segment->align) | |
2128 | + tls_segment->start - address); | |
2129 | } | |
2130 | ||
2131 | /* Complain if TLS instruction relocation is against an invalid | |
2132 | instruction. */ | |
2133 | ||
2134 | static void | |
2135 | invalid_tls_insn (input_bfd, input_section, rel) | |
2136 | bfd *input_bfd; | |
2137 | asection *input_section; | |
2138 | Elf_Internal_Rela *rel; | |
2139 | { | |
2140 | reloc_howto_type *howto; | |
2141 | ||
2142 | howto = elf_howto_table + ELF64_R_TYPE (rel->r_info); | |
2143 | (*_bfd_error_handler) | |
2144 | (_("%s(%s+0x%lx): invalid instruction for TLS relocation %s"), | |
2145 | bfd_archive_filename (input_bfd), | |
2146 | bfd_get_section_name (input_bfd, input_section), | |
2147 | (long) rel->r_offset, | |
2148 | howto->name); | |
2149 | } | |
2150 | ||
a85d7ed0 NC |
2151 | /* Relocate a 390 ELF section. */ |
2152 | ||
b34976b6 | 2153 | static bfd_boolean |
a85d7ed0 NC |
2154 | elf_s390_relocate_section (output_bfd, info, input_bfd, input_section, |
2155 | contents, relocs, local_syms, local_sections) | |
2156 | bfd *output_bfd; | |
2157 | struct bfd_link_info *info; | |
2158 | bfd *input_bfd; | |
2159 | asection *input_section; | |
2160 | bfd_byte *contents; | |
2161 | Elf_Internal_Rela *relocs; | |
2162 | Elf_Internal_Sym *local_syms; | |
2163 | asection **local_sections; | |
2164 | { | |
0451c93c | 2165 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
2166 | Elf_Internal_Shdr *symtab_hdr; |
2167 | struct elf_link_hash_entry **sym_hashes; | |
2168 | bfd_vma *local_got_offsets; | |
a85d7ed0 NC |
2169 | Elf_Internal_Rela *rel; |
2170 | Elf_Internal_Rela *relend; | |
2171 | ||
b491616a | 2172 | if (info->relocateable) |
b34976b6 | 2173 | return TRUE; |
b491616a | 2174 | |
0451c93c | 2175 | htab = elf_s390_hash_table (info); |
a85d7ed0 NC |
2176 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
2177 | sym_hashes = elf_sym_hashes (input_bfd); | |
2178 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2179 | ||
a85d7ed0 NC |
2180 | rel = relocs; |
2181 | relend = relocs + input_section->reloc_count; | |
2182 | for (; rel < relend; rel++) | |
2183 | { | |
5236c819 | 2184 | unsigned int r_type; |
a85d7ed0 NC |
2185 | reloc_howto_type *howto; |
2186 | unsigned long r_symndx; | |
2187 | struct elf_link_hash_entry *h; | |
2188 | Elf_Internal_Sym *sym; | |
2189 | asection *sec; | |
0451c93c | 2190 | bfd_vma off; |
a85d7ed0 | 2191 | bfd_vma relocation; |
b34976b6 | 2192 | bfd_boolean unresolved_reloc; |
a85d7ed0 | 2193 | bfd_reloc_status_type r; |
69fc87f1 | 2194 | int tls_type; |
a85d7ed0 NC |
2195 | |
2196 | r_type = ELF64_R_TYPE (rel->r_info); | |
0451c93c | 2197 | if (r_type == (int) R_390_GNU_VTINHERIT |
947216bf AM |
2198 | || r_type == (int) R_390_GNU_VTENTRY) |
2199 | continue; | |
5236c819 | 2200 | if (r_type >= (int) R_390_max) |
a85d7ed0 NC |
2201 | { |
2202 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2203 | return FALSE; |
a85d7ed0 | 2204 | } |
a85d7ed0 | 2205 | |
b491616a | 2206 | howto = elf_howto_table + r_type; |
a85d7ed0 | 2207 | r_symndx = ELF64_R_SYM (rel->r_info); |
5236c819 MS |
2208 | |
2209 | /* This is a final link. */ | |
a85d7ed0 NC |
2210 | h = NULL; |
2211 | sym = NULL; | |
2212 | sec = NULL; | |
b34976b6 | 2213 | unresolved_reloc = FALSE; |
a85d7ed0 NC |
2214 | if (r_symndx < symtab_hdr->sh_info) |
2215 | { | |
2216 | sym = local_syms + r_symndx; | |
2217 | sec = local_sections[r_symndx]; | |
f8df10f4 | 2218 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); |
a85d7ed0 NC |
2219 | } |
2220 | else | |
2221 | { | |
2222 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2223 | while (h->root.type == bfd_link_hash_indirect | |
2224 | || h->root.type == bfd_link_hash_warning) | |
2225 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
0451c93c | 2226 | |
a85d7ed0 NC |
2227 | if (h->root.type == bfd_link_hash_defined |
2228 | || h->root.type == bfd_link_hash_defweak) | |
2229 | { | |
2230 | sec = h->root.u.def.section; | |
27018c3f | 2231 | if (sec->output_section == NULL) |
a85d7ed0 | 2232 | { |
0451c93c MS |
2233 | /* Set a flag that will be cleared later if we find a |
2234 | relocation value for this symbol. output_section | |
2235 | is typically NULL for symbols satisfied by a shared | |
2236 | library. */ | |
b34976b6 | 2237 | unresolved_reloc = TRUE; |
a85d7ed0 NC |
2238 | relocation = 0; |
2239 | } | |
2240 | else | |
2241 | relocation = (h->root.u.def.value | |
2242 | + sec->output_section->vma | |
2243 | + sec->output_offset); | |
2244 | } | |
2245 | else if (h->root.type == bfd_link_hash_undefweak) | |
2246 | relocation = 0; | |
671bae9c | 2247 | else if (info->shared |
a85d7ed0 NC |
2248 | && !info->no_undefined |
2249 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
2250 | relocation = 0; | |
2251 | else | |
2252 | { | |
2253 | if (! ((*info->callbacks->undefined_symbol) | |
2254 | (info, h->root.root.string, input_bfd, | |
947216bf | 2255 | input_section, rel->r_offset, |
0451c93c MS |
2256 | (!info->shared || info->no_undefined |
2257 | || ELF_ST_VISIBILITY (h->other))))) | |
b34976b6 | 2258 | return FALSE; |
a85d7ed0 NC |
2259 | relocation = 0; |
2260 | } | |
2261 | } | |
2262 | ||
2263 | switch (r_type) | |
2264 | { | |
5236c819 MS |
2265 | case R_390_GOTPLT12: |
2266 | case R_390_GOTPLT16: | |
2267 | case R_390_GOTPLT32: | |
2268 | case R_390_GOTPLT64: | |
2269 | case R_390_GOTPLTENT: | |
2270 | /* There are three cases for a GOTPLT relocation. 1) The | |
2271 | relocation is against the jump slot entry of a plt that | |
2272 | will get emitted to the output file. 2) The relocation | |
2273 | is against the jump slot of a plt entry that has been | |
2274 | removed. elf_s390_adjust_gotplt has created a GOT entry | |
2275 | as replacement. 3) The relocation is against a local symbol. | |
2276 | Cases 2) and 3) are the same as the GOT relocation code | |
2277 | so we just have to test for case 1 and fall through for | |
2278 | the other two. */ | |
2279 | if (h != NULL && h->plt.offset != (bfd_vma) -1) | |
2280 | { | |
2281 | bfd_vma plt_index; | |
2282 | ||
2283 | /* Calc. index no. | |
2284 | Current offset - size first entry / entry size. */ | |
2285 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / | |
2286 | PLT_ENTRY_SIZE; | |
26e41594 | 2287 | |
5236c819 MS |
2288 | /* Offset in GOT is PLT index plus GOT headers(3) times 4, |
2289 | addr & GOT addr. */ | |
2290 | relocation = (plt_index + 3) * GOT_ENTRY_SIZE; | |
2291 | unresolved_reloc = FALSE; | |
2292 | ||
2293 | if (r_type == R_390_GOTPLTENT) | |
26e41594 | 2294 | relocation += htab->sgot->output_section->vma; |
5236c819 MS |
2295 | break; |
2296 | } | |
2297 | /* Fall through. */ | |
2298 | ||
947216bf AM |
2299 | case R_390_GOT12: |
2300 | case R_390_GOT16: | |
2301 | case R_390_GOT32: | |
2302 | case R_390_GOT64: | |
2303 | case R_390_GOTENT: | |
2304 | /* Relocation is to the entry for this symbol in the global | |
2305 | offset table. */ | |
0451c93c MS |
2306 | if (htab->sgot == NULL) |
2307 | abort (); | |
a85d7ed0 | 2308 | |
947216bf AM |
2309 | if (h != NULL) |
2310 | { | |
b34976b6 | 2311 | bfd_boolean dyn; |
a85d7ed0 | 2312 | |
947216bf | 2313 | off = h->got.offset; |
0451c93c | 2314 | dyn = htab->elf.dynamic_sections_created; |
947216bf AM |
2315 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h) |
2316 | || (info->shared | |
2317 | && (info->symbolic | |
0451c93c MS |
2318 | || h->dynindx == -1 |
2319 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) | |
82058a73 MS |
2320 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) |
2321 | || (ELF_ST_VISIBILITY (h->other) | |
2322 | && h->root.type == bfd_link_hash_undefweak)) | |
947216bf AM |
2323 | { |
2324 | /* This is actually a static link, or it is a | |
2325 | -Bsymbolic link and the symbol is defined | |
2326 | locally, or the symbol was forced to be local | |
2327 | because of a version file. We must initialize | |
2328 | this entry in the global offset table. Since the | |
2329 | offset must always be a multiple of 2, we use the | |
2330 | least significant bit to record whether we have | |
2331 | initialized it already. | |
2332 | ||
2333 | When doing a dynamic link, we create a .rel.got | |
2334 | relocation entry to initialize the value. This | |
2335 | is done in the finish_dynamic_symbol routine. */ | |
2336 | if ((off & 1) != 0) | |
2337 | off &= ~1; | |
2338 | else | |
2339 | { | |
a85d7ed0 | 2340 | bfd_put_64 (output_bfd, relocation, |
0451c93c | 2341 | htab->sgot->contents + off); |
947216bf AM |
2342 | h->got.offset |= 1; |
2343 | } | |
2344 | } | |
0451c93c | 2345 | else |
b34976b6 | 2346 | unresolved_reloc = FALSE; |
947216bf AM |
2347 | } |
2348 | else | |
2349 | { | |
0451c93c MS |
2350 | if (local_got_offsets == NULL) |
2351 | abort (); | |
a85d7ed0 | 2352 | |
947216bf | 2353 | off = local_got_offsets[r_symndx]; |
a85d7ed0 | 2354 | |
947216bf AM |
2355 | /* The offset must always be a multiple of 8. We use |
2356 | the least significant bit to record whether we have | |
2357 | already generated the necessary reloc. */ | |
2358 | if ((off & 1) != 0) | |
2359 | off &= ~1; | |
2360 | else | |
2361 | { | |
2362 | bfd_put_64 (output_bfd, relocation, | |
0451c93c | 2363 | htab->sgot->contents + off); |
a85d7ed0 | 2364 | |
947216bf AM |
2365 | if (info->shared) |
2366 | { | |
2367 | asection *s; | |
2368 | Elf_Internal_Rela outrel; | |
2369 | bfd_byte *loc; | |
a85d7ed0 | 2370 | |
947216bf AM |
2371 | s = htab->srelgot; |
2372 | if (s == NULL) | |
0451c93c | 2373 | abort (); |
a85d7ed0 | 2374 | |
947216bf AM |
2375 | outrel.r_offset = (htab->sgot->output_section->vma |
2376 | + htab->sgot->output_offset | |
2377 | + off); | |
2378 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); | |
a85d7ed0 | 2379 | outrel.r_addend = relocation; |
947216bf AM |
2380 | loc = s->contents; |
2381 | loc += s->reloc_count++ * sizeof (Elf64_External_Rela); | |
2382 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2383 | } | |
a85d7ed0 | 2384 | |
947216bf AM |
2385 | local_got_offsets[r_symndx] |= 1; |
2386 | } | |
2387 | } | |
a85d7ed0 | 2388 | |
0451c93c MS |
2389 | if (off >= (bfd_vma) -2) |
2390 | abort (); | |
2391 | ||
2392 | relocation = htab->sgot->output_offset + off; | |
2393 | ||
ae9a127f NC |
2394 | /* For @GOTENT the relocation is against the offset between |
2395 | the instruction and the symbols entry in the GOT and not | |
2396 | between the start of the GOT and the symbols entry. We | |
2397 | add the vma of the GOT to get the correct value. */ | |
5236c819 MS |
2398 | if ( r_type == R_390_GOTENT |
2399 | || r_type == R_390_GOTPLTENT) | |
0451c93c | 2400 | relocation += htab->sgot->output_section->vma; |
a85d7ed0 | 2401 | |
947216bf | 2402 | break; |
99c79b2e | 2403 | |
5236c819 MS |
2404 | case R_390_GOTOFF16: |
2405 | case R_390_GOTOFF32: | |
2406 | case R_390_GOTOFF64: | |
947216bf AM |
2407 | /* Relocation is relative to the start of the global offset |
2408 | table. */ | |
a85d7ed0 | 2409 | |
947216bf AM |
2410 | /* Note that sgot->output_offset is not involved in this |
2411 | calculation. We always want the start of .got. If we | |
2412 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
2413 | permitted by the ABI, we might have to change this | |
2414 | calculation. */ | |
2415 | relocation -= htab->sgot->output_section->vma; | |
947216bf | 2416 | break; |
a85d7ed0 | 2417 | |
947216bf | 2418 | case R_390_GOTPC: |
a85d7ed0 | 2419 | case R_390_GOTPCDBL: |
947216bf AM |
2420 | /* Use global offset table as symbol value. */ |
2421 | relocation = htab->sgot->output_section->vma; | |
b34976b6 | 2422 | unresolved_reloc = FALSE; |
947216bf | 2423 | break; |
a85d7ed0 | 2424 | |
947216bf AM |
2425 | case R_390_PLT16DBL: |
2426 | case R_390_PLT32: | |
2427 | case R_390_PLT32DBL: | |
2428 | case R_390_PLT64: | |
2429 | /* Relocation is to the entry for this symbol in the | |
2430 | procedure linkage table. */ | |
a85d7ed0 | 2431 | |
947216bf AM |
2432 | /* Resolve a PLT32 reloc against a local symbol directly, |
2433 | without using the procedure linkage table. */ | |
2434 | if (h == NULL) | |
2435 | break; | |
a85d7ed0 | 2436 | |
947216bf | 2437 | if (h->plt.offset == (bfd_vma) -1 |
0451c93c | 2438 | || htab->splt == NULL) |
947216bf AM |
2439 | { |
2440 | /* We didn't make a PLT entry for this symbol. This | |
2441 | happens when statically linking PIC code, or when | |
2442 | using -Bsymbolic. */ | |
2443 | break; | |
2444 | } | |
2445 | ||
2446 | relocation = (htab->splt->output_section->vma | |
2447 | + htab->splt->output_offset | |
2448 | + h->plt.offset); | |
b34976b6 | 2449 | unresolved_reloc = FALSE; |
26e41594 | 2450 | break; |
5236c819 MS |
2451 | |
2452 | case R_390_PLTOFF16: | |
2453 | case R_390_PLTOFF32: | |
2454 | case R_390_PLTOFF64: | |
26e41594 AM |
2455 | /* Relocation is to the entry for this symbol in the |
2456 | procedure linkage table relative to the start of the GOT. */ | |
5236c819 MS |
2457 | |
2458 | /* For local symbols or if we didn't make a PLT entry for | |
2459 | this symbol resolve the symbol directly. */ | |
26e41594 | 2460 | if ( h == NULL |
5236c819 MS |
2461 | || h->plt.offset == (bfd_vma) -1 |
2462 | || htab->splt == NULL) | |
2463 | { | |
2464 | relocation -= htab->sgot->output_section->vma; | |
2465 | break; | |
2466 | } | |
2467 | ||
26e41594 AM |
2468 | relocation = (htab->splt->output_section->vma |
2469 | + htab->splt->output_offset | |
2470 | + h->plt.offset | |
5236c819 MS |
2471 | - htab->sgot->output_section->vma); |
2472 | unresolved_reloc = FALSE; | |
947216bf AM |
2473 | break; |
2474 | ||
2475 | case R_390_8: | |
2476 | case R_390_16: | |
2477 | case R_390_32: | |
2478 | case R_390_64: | |
2479 | case R_390_PC16: | |
2480 | case R_390_PC16DBL: | |
2481 | case R_390_PC32: | |
a85d7ed0 | 2482 | case R_390_PC32DBL: |
947216bf | 2483 | case R_390_PC64: |
ec338859 AM |
2484 | /* r_symndx will be zero only for relocs against symbols |
2485 | from removed linkonce sections, or sections discarded by | |
2486 | a linker script. */ | |
947216bf AM |
2487 | if (r_symndx == 0 |
2488 | || (input_section->flags & SEC_ALLOC) == 0) | |
ec338859 AM |
2489 | break; |
2490 | ||
947216bf | 2491 | if ((info->shared |
82058a73 MS |
2492 | && (h == NULL |
2493 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2494 | || h->root.type != bfd_link_hash_undefweak) | |
0451c93c MS |
2495 | && ((r_type != R_390_PC16 |
2496 | && r_type != R_390_PC16DBL | |
2497 | && r_type != R_390_PC32 | |
2498 | && r_type != R_390_PC32DBL | |
2499 | && r_type != R_390_PC64) | |
2500 | || (h != NULL | |
2501 | && h->dynindx != -1 | |
2502 | && (! info->symbolic | |
2503 | || (h->elf_link_hash_flags | |
2504 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
64285810 MS |
2505 | || (ELIMINATE_COPY_RELOCS |
2506 | && !info->shared | |
0451c93c MS |
2507 | && h != NULL |
2508 | && h->dynindx != -1 | |
2509 | && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
2510 | && (((h->elf_link_hash_flags | |
2511 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
2512 | && (h->elf_link_hash_flags | |
2513 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
2514 | || h->root.type == bfd_link_hash_undefweak | |
2515 | || h->root.type == bfd_link_hash_undefined))) | |
947216bf AM |
2516 | { |
2517 | Elf_Internal_Rela outrel; | |
b34976b6 | 2518 | bfd_boolean skip, relocate; |
0451c93c | 2519 | asection *sreloc; |
947216bf | 2520 | bfd_byte *loc; |
a85d7ed0 | 2521 | |
947216bf AM |
2522 | /* When generating a shared object, these relocations |
2523 | are copied into the output file to be resolved at run | |
2524 | time. */ | |
b34976b6 AM |
2525 | skip = FALSE; |
2526 | relocate = FALSE; | |
a85d7ed0 | 2527 | |
c629eae0 JJ |
2528 | outrel.r_offset = |
2529 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2530 | rel->r_offset); | |
2531 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2532 | skip = TRUE; |
0bb2d96a | 2533 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2534 | skip = TRUE, relocate = TRUE; |
a85d7ed0 | 2535 | |
947216bf AM |
2536 | outrel.r_offset += (input_section->output_section->vma |
2537 | + input_section->output_offset); | |
a85d7ed0 | 2538 | |
947216bf | 2539 | if (skip) |
0bb2d96a | 2540 | memset (&outrel, 0, sizeof outrel); |
947216bf | 2541 | else if (h != NULL |
0451c93c MS |
2542 | && h->dynindx != -1 |
2543 | && (r_type == R_390_PC16 | |
2544 | || r_type == R_390_PC16DBL | |
2545 | || r_type == R_390_PC32 | |
2546 | || r_type == R_390_PC32DBL | |
2547 | || r_type == R_390_PC64 | |
2548 | || !info->shared | |
2549 | || !info->symbolic | |
2550 | || (h->elf_link_hash_flags | |
2551 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
947216bf AM |
2552 | { |
2553 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); | |
27018c3f | 2554 | outrel.r_addend = rel->r_addend; |
947216bf AM |
2555 | } |
2556 | else | |
2557 | { | |
0451c93c | 2558 | /* This symbol is local, or marked to become local. */ |
b34976b6 | 2559 | relocate = TRUE; |
0451c93c MS |
2560 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); |
2561 | outrel.r_addend = relocation + rel->r_addend; | |
2562 | } | |
a85d7ed0 | 2563 | |
0451c93c MS |
2564 | sreloc = elf_section_data (input_section)->sreloc; |
2565 | if (sreloc == NULL) | |
2566 | abort (); | |
2567 | ||
947216bf AM |
2568 | loc = sreloc->contents; |
2569 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
2570 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
a85d7ed0 | 2571 | |
947216bf AM |
2572 | /* If this reloc is against an external symbol, we do |
2573 | not want to fiddle with the addend. Otherwise, we | |
2574 | need to include the symbol value so that it becomes | |
2575 | an addend for the dynamic reloc. */ | |
2576 | if (! relocate) | |
2577 | continue; | |
2578 | } | |
a85d7ed0 | 2579 | |
947216bf | 2580 | break; |
a85d7ed0 | 2581 | |
69fc87f1 MS |
2582 | /* Relocations for tls literal pool entries. */ |
2583 | case R_390_TLS_IE64: | |
2584 | if (info->shared) | |
2585 | { | |
2586 | Elf_Internal_Rela outrel; | |
2587 | asection *sreloc; | |
2588 | bfd_byte *loc; | |
2589 | ||
2590 | outrel.r_offset = rel->r_offset | |
2591 | + input_section->output_section->vma | |
2592 | + input_section->output_offset; | |
2593 | outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); | |
2594 | sreloc = elf_section_data (input_section)->sreloc; | |
2595 | if (sreloc == NULL) | |
2596 | abort (); | |
2597 | loc = sreloc->contents; | |
2598 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
2599 | bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc); | |
2600 | } | |
ae9a127f | 2601 | /* Fall through. */ |
69fc87f1 MS |
2602 | |
2603 | case R_390_TLS_GD64: | |
2604 | case R_390_TLS_GOTIE64: | |
2605 | r_type = elf_s390_tls_transition (info, r_type, h == NULL); | |
2606 | tls_type = GOT_UNKNOWN; | |
2607 | if (h == NULL && local_got_offsets) | |
2608 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
2609 | else if (h != NULL) | |
2610 | { | |
2611 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
2612 | if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE) | |
2613 | r_type = R_390_TLS_LE64; | |
2614 | } | |
2615 | if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE) | |
2616 | r_type = R_390_TLS_IE64; | |
2617 | ||
2618 | if (r_type == R_390_TLS_LE64) | |
2619 | { | |
2620 | /* This relocation gets optimized away by the local exec | |
2621 | access optimization. */ | |
2622 | BFD_ASSERT (! unresolved_reloc); | |
2623 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
2624 | contents + rel->r_offset); | |
2625 | continue; | |
2626 | } | |
2627 | ||
2628 | if (htab->sgot == NULL) | |
2629 | abort (); | |
2630 | ||
2631 | if (h != NULL) | |
2632 | off = h->got.offset; | |
2633 | else | |
2634 | { | |
2635 | if (local_got_offsets == NULL) | |
2636 | abort (); | |
2637 | ||
2638 | off = local_got_offsets[r_symndx]; | |
2639 | } | |
2640 | ||
2641 | emit_tls_relocs: | |
2642 | ||
2643 | if ((off & 1) != 0) | |
2644 | off &= ~1; | |
26e41594 | 2645 | else |
69fc87f1 MS |
2646 | { |
2647 | Elf_Internal_Rela outrel; | |
2648 | bfd_byte *loc; | |
2649 | int dr_type, indx; | |
2650 | ||
2651 | if (htab->srelgot == NULL) | |
2652 | abort (); | |
2653 | ||
2654 | outrel.r_offset = (htab->sgot->output_section->vma | |
2655 | + htab->sgot->output_offset + off); | |
2656 | ||
2657 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
2658 | if (r_type == R_390_TLS_GD64) | |
2659 | dr_type = R_390_TLS_DTPMOD; | |
2660 | else | |
2661 | dr_type = R_390_TLS_TPOFF; | |
2662 | if (dr_type == R_390_TLS_TPOFF && indx == 0) | |
2663 | outrel.r_addend = relocation - dtpoff_base (info); | |
2664 | else | |
2665 | outrel.r_addend = 0; | |
2666 | outrel.r_info = ELF64_R_INFO (indx, dr_type); | |
2667 | loc = htab->srelgot->contents; | |
2668 | loc += htab->srelgot->reloc_count++ | |
2669 | * sizeof (Elf64_External_Rela); | |
2670 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2671 | ||
2672 | if (r_type == R_390_TLS_GD64) | |
2673 | { | |
2674 | if (indx == 0) | |
2675 | { | |
2676 | BFD_ASSERT (! unresolved_reloc); | |
2677 | bfd_put_64 (output_bfd, | |
2678 | relocation - dtpoff_base (info), | |
2679 | htab->sgot->contents + off + GOT_ENTRY_SIZE); | |
2680 | } | |
2681 | else | |
2682 | { | |
2683 | outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF); | |
2684 | outrel.r_offset += GOT_ENTRY_SIZE; | |
2685 | outrel.r_addend = 0; | |
2686 | htab->srelgot->reloc_count++; | |
2687 | loc += sizeof (Elf64_External_Rela); | |
2688 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2689 | } | |
2690 | } | |
2691 | ||
2692 | if (h != NULL) | |
2693 | h->got.offset |= 1; | |
2694 | else | |
2695 | local_got_offsets[r_symndx] |= 1; | |
2696 | } | |
2697 | ||
2698 | if (off >= (bfd_vma) -2) | |
2699 | abort (); | |
2700 | if (r_type == ELF64_R_TYPE (rel->r_info)) | |
2701 | { | |
2702 | relocation = htab->sgot->output_offset + off; | |
2703 | if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT) | |
2704 | relocation += htab->sgot->output_section->vma; | |
2705 | unresolved_reloc = FALSE; | |
2706 | } | |
2707 | else | |
2708 | { | |
2709 | bfd_put_64 (output_bfd, htab->sgot->output_offset + off, | |
2710 | contents + rel->r_offset); | |
2711 | continue; | |
2712 | } | |
2713 | break; | |
2714 | ||
2715 | case R_390_TLS_GOTIE12: | |
2716 | case R_390_TLS_IEENT: | |
2717 | if (h == NULL) | |
2718 | { | |
2719 | if (local_got_offsets == NULL) | |
2720 | abort(); | |
2721 | off = local_got_offsets[r_symndx]; | |
2722 | if (info->shared) | |
2723 | goto emit_tls_relocs; | |
2724 | } | |
2725 | else | |
2726 | { | |
2727 | off = h->got.offset; | |
2728 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
2729 | if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE) | |
2730 | goto emit_tls_relocs; | |
2731 | } | |
2732 | ||
2733 | if (htab->sgot == NULL) | |
2734 | abort (); | |
2735 | ||
2736 | BFD_ASSERT (! unresolved_reloc); | |
2737 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
2738 | htab->sgot->contents + off); | |
2739 | relocation = htab->sgot->output_offset + off; | |
2740 | if (r_type == R_390_TLS_IEENT) | |
2741 | relocation += htab->sgot->output_section->vma; | |
2742 | unresolved_reloc = FALSE; | |
2743 | break; | |
2744 | ||
2745 | case R_390_TLS_LDM64: | |
2746 | if (! info->shared) | |
2747 | /* The literal pool entry this relocation refers to gets ignored | |
2748 | by the optimized code of the local exec model. Do nothing | |
2749 | and the value will turn out zero. */ | |
2750 | continue; | |
2751 | ||
2752 | if (htab->sgot == NULL) | |
2753 | abort (); | |
2754 | ||
2755 | off = htab->tls_ldm_got.offset; | |
2756 | if (off & 1) | |
2757 | off &= ~1; | |
2758 | else | |
2759 | { | |
2760 | Elf_Internal_Rela outrel; | |
2761 | bfd_byte *loc; | |
2762 | ||
2763 | if (htab->srelgot == NULL) | |
2764 | abort (); | |
2765 | ||
2766 | outrel.r_offset = (htab->sgot->output_section->vma | |
2767 | + htab->sgot->output_offset + off); | |
2768 | ||
2769 | bfd_put_64 (output_bfd, 0, | |
2770 | htab->sgot->contents + off + GOT_ENTRY_SIZE); | |
2771 | outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD); | |
2772 | outrel.r_addend = 0; | |
2773 | loc = htab->srelgot->contents; | |
2774 | loc += htab->srelgot->reloc_count++ | |
2775 | * sizeof (Elf64_External_Rela); | |
2776 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2777 | htab->tls_ldm_got.offset |= 1; | |
2778 | } | |
2779 | relocation = htab->sgot->output_offset + off; | |
26e41594 | 2780 | unresolved_reloc = FALSE; |
69fc87f1 MS |
2781 | break; |
2782 | ||
2783 | case R_390_TLS_LE64: | |
2784 | if (info->shared) | |
2785 | { | |
2786 | /* Linking a shared library with non-fpic code requires | |
2787 | a R_390_TLS_TPOFF relocation. */ | |
2788 | Elf_Internal_Rela outrel; | |
2789 | asection *sreloc; | |
2790 | bfd_byte *loc; | |
2791 | int indx; | |
2792 | ||
2793 | outrel.r_offset = rel->r_offset | |
2794 | + input_section->output_section->vma | |
2795 | + input_section->output_offset; | |
2796 | if (h != NULL && h->dynindx != -1) | |
2797 | indx = h->dynindx; | |
2798 | else | |
2799 | indx = 0; | |
2800 | outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF); | |
2801 | if (indx == 0) | |
2802 | outrel.r_addend = relocation - dtpoff_base (info); | |
2803 | else | |
2804 | outrel.r_addend = 0; | |
2805 | sreloc = elf_section_data (input_section)->sreloc; | |
2806 | if (sreloc == NULL) | |
2807 | abort (); | |
2808 | loc = sreloc->contents; | |
2809 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
2810 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
2811 | } | |
2812 | else | |
2813 | { | |
2814 | BFD_ASSERT (! unresolved_reloc); | |
2815 | bfd_put_64 (output_bfd, -tpoff (info, relocation), | |
2816 | contents + rel->r_offset); | |
2817 | } | |
2818 | continue; | |
2819 | ||
2820 | case R_390_TLS_LDO64: | |
2821 | if (info->shared || (input_section->flags & SEC_CODE) == 0) | |
2822 | relocation -= dtpoff_base (info); | |
2823 | else | |
2824 | /* When converting LDO to LE, we must negate. */ | |
2825 | relocation = -tpoff (info, relocation); | |
2826 | break; | |
2827 | ||
2828 | /* Relocations for tls instructions. */ | |
2829 | case R_390_TLS_LOAD: | |
2830 | case R_390_TLS_GDCALL: | |
2831 | case R_390_TLS_LDCALL: | |
2832 | tls_type = GOT_UNKNOWN; | |
2833 | if (h == NULL && local_got_offsets) | |
2834 | tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx]; | |
2835 | else if (h != NULL) | |
2836 | tls_type = elf_s390_hash_entry(h)->tls_type; | |
2837 | ||
2838 | if (tls_type == GOT_TLS_GD) | |
2839 | continue; | |
2840 | ||
2841 | if (r_type == R_390_TLS_LOAD) | |
2842 | { | |
2843 | if (!info->shared && (h == NULL || h->dynindx == -1)) | |
2844 | { | |
2845 | /* IE->LE transition. Four valid cases: | |
2846 | lg %rx,(0,%ry) -> sllg %rx,%ry,0 | |
2847 | lg %rx,(%ry,0) -> sllg %rx,%ry,0 | |
2848 | lg %rx,(%ry,%r12) -> sllg %rx,%ry,0 | |
2849 | lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */ | |
2850 | unsigned int insn0, insn1, ry; | |
2851 | ||
2852 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
2853 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
2854 | if (insn1 != 0x0004) | |
2855 | invalid_tls_insn (input_bfd, input_section, rel); | |
2856 | ry = 0; | |
2857 | if ((insn0 & 0xff00f000) == 0xe3000000) | |
2858 | /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */ | |
2859 | ry = (insn0 & 0x000f0000); | |
2860 | else if ((insn0 & 0xff0f0000) == 0xe3000000) | |
2861 | /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */ | |
2862 | ry = (insn0 & 0x0000f000) << 4; | |
2863 | else if ((insn0 & 0xff00f000) == 0xe300c000) | |
2864 | /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */ | |
2865 | ry = (insn0 & 0x000f0000); | |
2866 | else if ((insn0 & 0xff0f0000) == 0xe30c0000) | |
2867 | /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */ | |
2868 | ry = (insn0 & 0x0000f000) << 4; | |
2869 | else | |
2870 | invalid_tls_insn (input_bfd, input_section, rel); | |
2871 | insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry; | |
2872 | insn1 = 0x000d; | |
2873 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
2874 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
2875 | } | |
2876 | } | |
2877 | else if (r_type == R_390_TLS_GDCALL) | |
2878 | { | |
2879 | unsigned int insn0, insn1; | |
2880 | ||
2881 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
2882 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
2883 | if ((insn0 & 0xffff0000) != 0xc0e50000) | |
2884 | invalid_tls_insn (input_bfd, input_section, rel); | |
2885 | if (!info->shared && (h == NULL || h->dynindx == -1)) | |
2886 | { | |
2887 | /* GD->LE transition. | |
2888 | brasl %r14,__tls_get_addr@plt -> brcl 0,. */ | |
2889 | insn0 = 0xc0040000; | |
2890 | insn1 = 0x0000; | |
2891 | } | |
2892 | else | |
2893 | { | |
2894 | /* GD->IE transition. | |
2895 | brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */ | |
2896 | insn0 = 0xe322c000; | |
2897 | insn1 = 0x0004; | |
2898 | } | |
2899 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
2900 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
2901 | } | |
2902 | else if (r_type == R_390_TLS_LDCALL) | |
2903 | { | |
2904 | if (!info->shared) | |
2905 | { | |
2906 | unsigned int insn0, insn1; | |
2907 | ||
2908 | insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
2909 | insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4); | |
2910 | if ((insn0 & 0xffff0000) != 0xc0e50000) | |
2911 | invalid_tls_insn (input_bfd, input_section, rel); | |
2912 | /* LD->LE transition. | |
2913 | brasl %r14,__tls_get_addr@plt -> brcl 0,. */ | |
2914 | insn0 = 0xc0040000; | |
2915 | insn1 = 0x0000; | |
2916 | bfd_put_32 (output_bfd, insn0, contents + rel->r_offset); | |
2917 | bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4); | |
2918 | } | |
2919 | } | |
2920 | continue; | |
2921 | ||
947216bf AM |
2922 | default: |
2923 | break; | |
2924 | } | |
a85d7ed0 | 2925 | |
239e1f3a AM |
2926 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
2927 | because such sections are not SEC_ALLOC and thus ld.so will | |
2928 | not process them. */ | |
0451c93c | 2929 | if (unresolved_reloc |
239e1f3a | 2930 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
0451c93c MS |
2931 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) |
2932 | (*_bfd_error_handler) | |
2933 | (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"), | |
2934 | bfd_archive_filename (input_bfd), | |
2935 | bfd_get_section_name (input_bfd, input_section), | |
2936 | (long) rel->r_offset, | |
2937 | h->root.root.string); | |
2938 | ||
a85d7ed0 NC |
2939 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
2940 | contents, rel->r_offset, | |
2941 | relocation, rel->r_addend); | |
2942 | ||
2943 | if (r != bfd_reloc_ok) | |
2944 | { | |
0451c93c | 2945 | const char *name; |
ec338859 | 2946 | |
0451c93c MS |
2947 | if (h != NULL) |
2948 | name = h->root.root.string; | |
2949 | else | |
a85d7ed0 | 2950 | { |
0451c93c MS |
2951 | name = bfd_elf_string_from_elf_section (input_bfd, |
2952 | symtab_hdr->sh_link, | |
2953 | sym->st_name); | |
2954 | if (name == NULL) | |
b34976b6 | 2955 | return FALSE; |
0451c93c MS |
2956 | if (*name == '\0') |
2957 | name = bfd_section_name (input_bfd, sec); | |
2958 | } | |
ec338859 | 2959 | |
0451c93c MS |
2960 | if (r == bfd_reloc_overflow) |
2961 | { | |
ec338859 | 2962 | |
0451c93c MS |
2963 | if (! ((*info->callbacks->reloc_overflow) |
2964 | (info, name, howto->name, (bfd_vma) 0, | |
2965 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 2966 | return FALSE; |
0451c93c MS |
2967 | } |
2968 | else | |
2969 | { | |
2970 | (*_bfd_error_handler) | |
2971 | (_("%s(%s+0x%lx): reloc against `%s': error %d"), | |
2972 | bfd_archive_filename (input_bfd), | |
2973 | bfd_get_section_name (input_bfd, input_section), | |
2974 | (long) rel->r_offset, name, (int) r); | |
b34976b6 | 2975 | return FALSE; |
a85d7ed0 NC |
2976 | } |
2977 | } | |
2978 | } | |
2979 | ||
b34976b6 | 2980 | return TRUE; |
a85d7ed0 NC |
2981 | } |
2982 | ||
2983 | /* Finish up dynamic symbol handling. We set the contents of various | |
2984 | dynamic sections here. */ | |
2985 | ||
b34976b6 | 2986 | static bfd_boolean |
a85d7ed0 NC |
2987 | elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym) |
2988 | bfd *output_bfd; | |
2989 | struct bfd_link_info *info; | |
2990 | struct elf_link_hash_entry *h; | |
2991 | Elf_Internal_Sym *sym; | |
2992 | { | |
0451c93c | 2993 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 | 2994 | |
0451c93c | 2995 | htab = elf_s390_hash_table (info); |
a85d7ed0 NC |
2996 | |
2997 | if (h->plt.offset != (bfd_vma) -1) | |
2998 | { | |
a85d7ed0 | 2999 | bfd_vma plt_index; |
0451c93c MS |
3000 | bfd_vma got_offset; |
3001 | Elf_Internal_Rela rela; | |
947216bf | 3002 | bfd_byte *loc; |
a85d7ed0 NC |
3003 | |
3004 | /* This symbol has an entry in the procedure linkage table. Set | |
947216bf | 3005 | it up. */ |
a85d7ed0 | 3006 | |
0451c93c MS |
3007 | if (h->dynindx == -1 |
3008 | || htab->splt == NULL | |
3009 | || htab->sgotplt == NULL | |
3010 | || htab->srelplt == NULL) | |
3011 | abort (); | |
a85d7ed0 | 3012 | |
99c79b2e | 3013 | /* Calc. index no. |
947216bf | 3014 | Current offset - size first entry / entry size. */ |
a85d7ed0 NC |
3015 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE; |
3016 | ||
3017 | /* Offset in GOT is PLT index plus GOT headers(3) times 8, | |
947216bf | 3018 | addr & GOT addr. */ |
a85d7ed0 NC |
3019 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; |
3020 | ||
3021 | /* Fill in the blueprint of a PLT. */ | |
0451c93c MS |
3022 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD0, |
3023 | htab->splt->contents + h->plt.offset); | |
3024 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD1, | |
3025 | htab->splt->contents + h->plt.offset + 4); | |
3026 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2, | |
3027 | htab->splt->contents + h->plt.offset + 8); | |
3028 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3, | |
3029 | htab->splt->contents + h->plt.offset + 12); | |
3030 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD4, | |
3031 | htab->splt->contents + h->plt.offset + 16); | |
3032 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD5, | |
3033 | htab->splt->contents + h->plt.offset + 20); | |
3034 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD6, | |
3035 | htab->splt->contents + h->plt.offset + 24); | |
3036 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD7, | |
3037 | htab->splt->contents + h->plt.offset + 28); | |
a85d7ed0 NC |
3038 | /* Fixup the relative address to the GOT entry */ |
3039 | bfd_put_32 (output_bfd, | |
0451c93c MS |
3040 | (htab->sgotplt->output_section->vma + |
3041 | htab->sgotplt->output_offset + got_offset | |
3042 | - (htab->splt->output_section->vma + h->plt.offset))/2, | |
3043 | htab->splt->contents + h->plt.offset + 2); | |
a85d7ed0 NC |
3044 | /* Fixup the relative branch to PLT 0 */ |
3045 | bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE + | |
3046 | (PLT_ENTRY_SIZE * plt_index) + 22)/2, | |
0451c93c | 3047 | htab->splt->contents + h->plt.offset + 24); |
a85d7ed0 NC |
3048 | /* Fixup offset into symbol table */ |
3049 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela), | |
0451c93c | 3050 | htab->splt->contents + h->plt.offset + 28); |
a85d7ed0 NC |
3051 | |
3052 | /* Fill in the entry in the global offset table. | |
947216bf | 3053 | Points to instruction after GOT offset. */ |
a85d7ed0 | 3054 | bfd_put_64 (output_bfd, |
0451c93c MS |
3055 | (htab->splt->output_section->vma |
3056 | + htab->splt->output_offset | |
a85d7ed0 NC |
3057 | + h->plt.offset |
3058 | + 14), | |
0451c93c | 3059 | htab->sgotplt->contents + got_offset); |
a85d7ed0 | 3060 | |
0451c93c MS |
3061 | /* Fill in the entry in the .rela.plt section. */ |
3062 | rela.r_offset = (htab->sgotplt->output_section->vma | |
3063 | + htab->sgotplt->output_offset | |
3064 | + got_offset); | |
3065 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
3066 | rela.r_addend = 0; | |
947216bf | 3067 | loc = htab->srelplt->contents + plt_index * sizeof (Elf64_External_Rela); |
0451c93c | 3068 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3069 | |
3070 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
3071 | { | |
3072 | /* Mark the symbol as undefined, rather than as defined in | |
0451c93c MS |
3073 | the .plt section. Leave the value alone. This is a clue |
3074 | for the dynamic linker, to make function pointer | |
3075 | comparisons work between an application and shared | |
3076 | library. */ | |
a85d7ed0 NC |
3077 | sym->st_shndx = SHN_UNDEF; |
3078 | } | |
3079 | } | |
3080 | ||
69fc87f1 MS |
3081 | if (h->got.offset != (bfd_vma) -1 |
3082 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD | |
3083 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE | |
3084 | && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT) | |
a85d7ed0 | 3085 | { |
a85d7ed0 | 3086 | Elf_Internal_Rela rela; |
947216bf | 3087 | bfd_byte *loc; |
a85d7ed0 NC |
3088 | |
3089 | /* This symbol has an entry in the global offset table. Set it | |
947216bf | 3090 | up. */ |
0451c93c MS |
3091 | if (htab->sgot == NULL || htab->srelgot == NULL) |
3092 | abort (); | |
a85d7ed0 | 3093 | |
0451c93c MS |
3094 | rela.r_offset = (htab->sgot->output_section->vma |
3095 | + htab->sgot->output_offset | |
dc810e39 | 3096 | + (h->got.offset &~ (bfd_vma) 1)); |
a85d7ed0 NC |
3097 | |
3098 | /* If this is a static link, or it is a -Bsymbolic link and the | |
3099 | symbol is defined locally or was forced to be local because | |
3100 | of a version file, we just want to emit a RELATIVE reloc. | |
3101 | The entry in the global offset table will already have been | |
3102 | initialized in the relocate_section function. */ | |
0451c93c MS |
3103 | if (info->shared |
3104 | && (info->symbolic | |
3105 | || h->dynindx == -1 | |
3106 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) | |
3107 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
947216bf | 3108 | { |
0451c93c | 3109 | BFD_ASSERT((h->got.offset & 1) != 0); |
947216bf AM |
3110 | rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE); |
3111 | rela.r_addend = (h->root.u.def.value | |
3112 | + h->root.u.def.section->output_section->vma | |
3113 | + h->root.u.def.section->output_offset); | |
3114 | } | |
a85d7ed0 NC |
3115 | else |
3116 | { | |
3117 | BFD_ASSERT((h->got.offset & 1) == 0); | |
0451c93c | 3118 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgot->contents + h->got.offset); |
a85d7ed0 | 3119 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT); |
947216bf AM |
3120 | rela.r_addend = 0; |
3121 | } | |
a85d7ed0 | 3122 | |
947216bf AM |
3123 | loc = htab->srelgot->contents; |
3124 | loc += htab->srelgot->reloc_count++ * sizeof (Elf64_External_Rela); | |
0451c93c | 3125 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3126 | } |
3127 | ||
3128 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
3129 | { | |
a85d7ed0 | 3130 | Elf_Internal_Rela rela; |
947216bf | 3131 | bfd_byte *loc; |
a85d7ed0 NC |
3132 | |
3133 | /* This symbols needs a copy reloc. Set it up. */ | |
3134 | ||
0451c93c MS |
3135 | if (h->dynindx == -1 |
3136 | || (h->root.type != bfd_link_hash_defined | |
3137 | && h->root.type != bfd_link_hash_defweak) | |
3138 | || htab->srelbss == NULL) | |
3139 | abort (); | |
a85d7ed0 NC |
3140 | |
3141 | rela.r_offset = (h->root.u.def.value | |
3142 | + h->root.u.def.section->output_section->vma | |
3143 | + h->root.u.def.section->output_offset); | |
3144 | rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY); | |
3145 | rela.r_addend = 0; | |
947216bf AM |
3146 | loc = htab->srelbss->contents; |
3147 | loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
0451c93c | 3148 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
3149 | } |
3150 | ||
3151 | /* Mark some specially defined symbols as absolute. */ | |
3152 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
3153 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
3154 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
3155 | sym->st_shndx = SHN_ABS; | |
3156 | ||
b34976b6 | 3157 | return TRUE; |
a85d7ed0 NC |
3158 | } |
3159 | ||
0451c93c MS |
3160 | /* Used to decide how to sort relocs in an optimal manner for the |
3161 | dynamic linker, before writing them out. */ | |
3162 | ||
3163 | static enum elf_reloc_type_class | |
3164 | elf_s390_reloc_type_class (rela) | |
3165 | const Elf_Internal_Rela *rela; | |
3166 | { | |
3167 | switch ((int) ELF64_R_TYPE (rela->r_info)) | |
3168 | { | |
3169 | case R_390_RELATIVE: | |
3170 | return reloc_class_relative; | |
3171 | case R_390_JMP_SLOT: | |
3172 | return reloc_class_plt; | |
3173 | case R_390_COPY: | |
3174 | return reloc_class_copy; | |
3175 | default: | |
3176 | return reloc_class_normal; | |
3177 | } | |
3178 | } | |
3179 | ||
a85d7ed0 NC |
3180 | /* Finish up the dynamic sections. */ |
3181 | ||
b34976b6 | 3182 | static bfd_boolean |
a85d7ed0 NC |
3183 | elf_s390_finish_dynamic_sections (output_bfd, info) |
3184 | bfd *output_bfd; | |
3185 | struct bfd_link_info *info; | |
3186 | { | |
0451c93c | 3187 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
3188 | bfd *dynobj; |
3189 | asection *sdyn; | |
a85d7ed0 | 3190 | |
0451c93c MS |
3191 | htab = elf_s390_hash_table (info); |
3192 | dynobj = htab->elf.dynobj; | |
a85d7ed0 NC |
3193 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
3194 | ||
0451c93c | 3195 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 | 3196 | { |
a85d7ed0 NC |
3197 | Elf64_External_Dyn *dyncon, *dynconend; |
3198 | ||
0451c93c MS |
3199 | if (sdyn == NULL || htab->sgot == NULL) |
3200 | abort (); | |
a85d7ed0 NC |
3201 | |
3202 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
3203 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
3204 | for (; dyncon < dynconend; dyncon++) | |
3205 | { | |
3206 | Elf_Internal_Dyn dyn; | |
a85d7ed0 | 3207 | asection *s; |
ec338859 | 3208 | |
a85d7ed0 | 3209 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); |
ec338859 | 3210 | |
a85d7ed0 NC |
3211 | switch (dyn.d_tag) |
3212 | { | |
3213 | default: | |
0451c93c | 3214 | continue; |
ec338859 | 3215 | |
a85d7ed0 | 3216 | case DT_PLTGOT: |
0451c93c MS |
3217 | dyn.d_un.d_ptr = htab->sgot->output_section->vma; |
3218 | break; | |
ec338859 | 3219 | |
a85d7ed0 | 3220 | case DT_JMPREL: |
0451c93c | 3221 | dyn.d_un.d_ptr = htab->srelplt->output_section->vma; |
a85d7ed0 | 3222 | break; |
ec338859 | 3223 | |
a85d7ed0 | 3224 | case DT_PLTRELSZ: |
0451c93c | 3225 | s = htab->srelplt->output_section; |
a85d7ed0 NC |
3226 | if (s->_cooked_size != 0) |
3227 | dyn.d_un.d_val = s->_cooked_size; | |
3228 | else | |
3229 | dyn.d_un.d_val = s->_raw_size; | |
a85d7ed0 | 3230 | break; |
ec338859 | 3231 | |
a85d7ed0 NC |
3232 | case DT_RELASZ: |
3233 | /* The procedure linkage table relocs (DT_JMPREL) should | |
3234 | not be included in the overall relocs (DT_RELA). | |
3235 | Therefore, we override the DT_RELASZ entry here to | |
3236 | make it not include the JMPREL relocs. Since the | |
3237 | linker script arranges for .rela.plt to follow all | |
3238 | other relocation sections, we don't have to worry | |
3239 | about changing the DT_RELA entry. */ | |
0451c93c MS |
3240 | s = htab->srelplt->output_section; |
3241 | if (s->_cooked_size != 0) | |
3242 | dyn.d_un.d_val -= s->_cooked_size; | |
3243 | else | |
3244 | dyn.d_un.d_val -= s->_raw_size; | |
a85d7ed0 NC |
3245 | break; |
3246 | } | |
0451c93c MS |
3247 | |
3248 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
a85d7ed0 NC |
3249 | } |
3250 | ||
3251 | /* Fill in the special first entry in the procedure linkage table. */ | |
0451c93c | 3252 | if (htab->splt && htab->splt->_raw_size > 0) |
a85d7ed0 NC |
3253 | { |
3254 | /* fill in blueprint for plt 0 entry */ | |
0451c93c MS |
3255 | bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD0, |
3256 | htab->splt->contents ); | |
3257 | bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD1, | |
3258 | htab->splt->contents +4 ); | |
3259 | bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD3, | |
3260 | htab->splt->contents +12 ); | |
3261 | bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD4, | |
3262 | htab->splt->contents +16 ); | |
3263 | bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD5, | |
3264 | htab->splt->contents +20 ); | |
3265 | bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD6, | |
3266 | htab->splt->contents + 24); | |
3267 | bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD7, | |
3268 | htab->splt->contents + 28 ); | |
a85d7ed0 NC |
3269 | /* Fixup relative address to start of GOT */ |
3270 | bfd_put_32 (output_bfd, | |
0451c93c MS |
3271 | (htab->sgotplt->output_section->vma + |
3272 | htab->sgotplt->output_offset | |
3273 | - htab->splt->output_section->vma - 6)/2, | |
3274 | htab->splt->contents + 8); | |
a85d7ed0 | 3275 | } |
0451c93c MS |
3276 | elf_section_data (htab->splt->output_section) |
3277 | ->this_hdr.sh_entsize = PLT_ENTRY_SIZE; | |
a85d7ed0 NC |
3278 | } |
3279 | ||
0451c93c | 3280 | if (htab->sgotplt) |
a85d7ed0 | 3281 | { |
0451c93c MS |
3282 | /* Fill in the first three entries in the global offset table. */ |
3283 | if (htab->sgotplt->_raw_size > 0) | |
3284 | { | |
3285 | bfd_put_64 (output_bfd, | |
3286 | (sdyn == NULL ? (bfd_vma) 0 | |
3287 | : sdyn->output_section->vma + sdyn->output_offset), | |
3288 | htab->sgotplt->contents); | |
3289 | /* One entry for shared object struct ptr. */ | |
3290 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8); | |
3291 | /* One entry for _dl_runtime_resolve. */ | |
3292 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 12); | |
3293 | } | |
a85d7ed0 | 3294 | |
0451c93c MS |
3295 | elf_section_data (htab->sgot->output_section) |
3296 | ->this_hdr.sh_entsize = 8; | |
3297 | } | |
b34976b6 | 3298 | return TRUE; |
a85d7ed0 NC |
3299 | } |
3300 | ||
ae9a127f NC |
3301 | /* Why was the hash table entry size definition changed from |
3302 | ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and | |
3303 | this is the only reason for the s390_elf64_size_info structure. */ | |
a85d7ed0 NC |
3304 | |
3305 | const struct elf_size_info s390_elf64_size_info = | |
3306 | { | |
3307 | sizeof (Elf64_External_Ehdr), | |
3308 | sizeof (Elf64_External_Phdr), | |
3309 | sizeof (Elf64_External_Shdr), | |
3310 | sizeof (Elf64_External_Rel), | |
3311 | sizeof (Elf64_External_Rela), | |
3312 | sizeof (Elf64_External_Sym), | |
3313 | sizeof (Elf64_External_Dyn), | |
3314 | sizeof (Elf_External_Note), | |
ae9a127f NC |
3315 | 8, /* hash-table entry size. */ |
3316 | 1, /* internal relocations per external relocations. */ | |
3317 | 64, /* arch_size. */ | |
45d6a902 | 3318 | 3, /* log_file_align. */ |
a85d7ed0 NC |
3319 | ELFCLASS64, EV_CURRENT, |
3320 | bfd_elf64_write_out_phdrs, | |
3321 | bfd_elf64_write_shdrs_and_ehdr, | |
3322 | bfd_elf64_write_relocs, | |
73ff0d56 | 3323 | bfd_elf64_swap_symbol_in, |
a85d7ed0 NC |
3324 | bfd_elf64_swap_symbol_out, |
3325 | bfd_elf64_slurp_reloc_table, | |
3326 | bfd_elf64_slurp_symbol_table, | |
3327 | bfd_elf64_swap_dyn_in, | |
3328 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
3329 | bfd_elf64_swap_reloc_in, |
3330 | bfd_elf64_swap_reloc_out, | |
3331 | bfd_elf64_swap_reloca_in, | |
3332 | bfd_elf64_swap_reloca_out | |
a85d7ed0 NC |
3333 | }; |
3334 | ||
3335 | #define TARGET_BIG_SYM bfd_elf64_s390_vec | |
3336 | #define TARGET_BIG_NAME "elf64-s390" | |
3337 | #define ELF_ARCH bfd_arch_s390 | |
3338 | #define ELF_MACHINE_CODE EM_S390 | |
3339 | #define ELF_MACHINE_ALT1 EM_S390_OLD | |
3340 | #define ELF_MAXPAGESIZE 0x1000 | |
3341 | ||
3342 | #define elf_backend_size_info s390_elf64_size_info | |
3343 | ||
3344 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 3345 | #define elf_backend_can_refcount 1 |
a85d7ed0 NC |
3346 | #define elf_backend_want_got_plt 1 |
3347 | #define elf_backend_plt_readonly 1 | |
3348 | #define elf_backend_want_plt_sym 0 | |
3349 | #define elf_backend_got_header_size 24 | |
3350 | #define elf_backend_plt_header_size PLT_ENTRY_SIZE | |
b491616a | 3351 | #define elf_backend_rela_normal 1 |
a85d7ed0 NC |
3352 | |
3353 | #define elf_info_to_howto elf_s390_info_to_howto | |
3354 | ||
a85d7ed0 NC |
3355 | #define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name |
3356 | #define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create | |
3357 | #define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup | |
3358 | ||
3359 | #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol | |
3360 | #define elf_backend_check_relocs elf_s390_check_relocs | |
0451c93c MS |
3361 | #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol |
3362 | #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections | |
a85d7ed0 NC |
3363 | #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections |
3364 | #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol | |
3365 | #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook | |
3366 | #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook | |
0451c93c | 3367 | #define elf_backend_reloc_type_class elf_s390_reloc_type_class |
a85d7ed0 NC |
3368 | #define elf_backend_relocate_section elf_s390_relocate_section |
3369 | #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections | |
29c2fb7c | 3370 | #define elf_backend_reloc_type_class elf_s390_reloc_type_class |
a85d7ed0 | 3371 | |
69fc87f1 MS |
3372 | #define bfd_elf64_mkobject elf_s390_mkobject |
3373 | #define elf_backend_object_p elf_s390_object_p | |
a85d7ed0 NC |
3374 | |
3375 | #include "elf64-target.h" |