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