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a85d7ed0 | 1 | /* IBM S/390-specific support for 32-bit ELF |
e92d460e | 2 | Copyright 2000, 2001, 2002 Free Software Foundation, Inc. |
a85d7ed0 NC |
3 | Contributed by Carl B. Pedersen and Martin Schwidefsky. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
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 *)); | |
5a65713f | 48 | static asection *elf_s390_gc_mark_hook |
1e2f5b6e | 49 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
0451c93c | 50 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
b34976b6 | 51 | static bfd_boolean elf_s390_gc_sweep_hook |
5a65713f 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 *)); |
b34976b6 AM |
75 | static bfd_boolean elf_s390_object_p |
76 | PARAMS ((bfd *)); | |
77 | static bfd_boolean elf_s390_grok_prstatus | |
78 | PARAMS ((bfd *, Elf_Internal_Note *)); | |
a85d7ed0 | 79 | |
a85d7ed0 NC |
80 | #include "elf/s390.h" |
81 | ||
82 | /* The relocation "howto" table. */ | |
83 | ||
84 | static reloc_howto_type elf_howto_table[] = | |
85 | { | |
86 | HOWTO (R_390_NONE, /* type */ | |
87 | 0, /* rightshift */ | |
88 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
89 | 0, /* bitsize */ | |
b34976b6 | 90 | FALSE, /* pc_relative */ |
a85d7ed0 NC |
91 | 0, /* bitpos */ |
92 | complain_overflow_dont, /* complain_on_overflow */ | |
93 | bfd_elf_generic_reloc, /* special_function */ | |
94 | "R_390_NONE", /* name */ | |
b34976b6 | 95 | FALSE, /* partial_inplace */ |
a85d7ed0 NC |
96 | 0, /* src_mask */ |
97 | 0, /* dst_mask */ | |
b34976b6 AM |
98 | FALSE), /* pcrel_offset */ |
99 | ||
5236c819 MS |
100 | HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, |
101 | bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE), | |
102 | HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
103 | bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE), | |
104 | HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
105 | bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE), | |
106 | HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
107 | bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE), | |
108 | HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
109 | bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE), | |
110 | HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
111 | bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE), | |
112 | HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
113 | bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE), | |
114 | HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
115 | bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE), | |
116 | HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
117 | bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE), | |
118 | HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
119 | bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE), | |
120 | HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
121 | bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE), | |
122 | HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
123 | bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE), | |
124 | HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
125 | bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE), | |
126 | HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
127 | bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE), | |
128 | HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
129 | bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE), | |
130 | HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
131 | bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE), | |
132 | HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
133 | bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE), | |
134 | HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
135 | bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE), | |
136 | HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
137 | bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE), | |
138 | HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
139 | bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE), | |
140 | HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
141 | bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE), | |
142 | EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */ | |
143 | EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */ | |
144 | EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */ | |
145 | EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */ | |
146 | HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
147 | bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE), | |
148 | HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
149 | bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE), | |
150 | EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */ | |
151 | HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont, | |
152 | bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE), | |
153 | HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
154 | bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE), | |
155 | HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
156 | bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE), | |
157 | EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */ | |
158 | HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
159 | bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE), | |
160 | HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
161 | bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE), | |
162 | HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
163 | bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE), | |
164 | EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */ | |
a85d7ed0 NC |
165 | }; |
166 | ||
167 | /* GNU extension to record C++ vtable hierarchy. */ | |
168 | static reloc_howto_type elf32_s390_vtinherit_howto = | |
b34976b6 | 169 | HOWTO (R_390_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE); |
a85d7ed0 | 170 | static reloc_howto_type elf32_s390_vtentry_howto = |
b34976b6 | 171 | HOWTO (R_390_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE); |
a85d7ed0 NC |
172 | |
173 | static reloc_howto_type * | |
174 | elf_s390_reloc_type_lookup (abfd, code) | |
175 | bfd *abfd ATTRIBUTE_UNUSED; | |
176 | bfd_reloc_code_real_type code; | |
177 | { | |
ec338859 | 178 | switch (code) |
0451c93c MS |
179 | { |
180 | case BFD_RELOC_NONE: | |
181 | return &elf_howto_table[(int) R_390_NONE]; | |
182 | case BFD_RELOC_8: | |
183 | return &elf_howto_table[(int) R_390_8]; | |
184 | case BFD_RELOC_390_12: | |
185 | return &elf_howto_table[(int) R_390_12]; | |
186 | case BFD_RELOC_16: | |
187 | return &elf_howto_table[(int) R_390_16]; | |
188 | case BFD_RELOC_32: | |
189 | return &elf_howto_table[(int) R_390_32]; | |
190 | case BFD_RELOC_CTOR: | |
191 | return &elf_howto_table[(int) R_390_32]; | |
192 | case BFD_RELOC_32_PCREL: | |
193 | return &elf_howto_table[(int) R_390_PC32]; | |
194 | case BFD_RELOC_390_GOT12: | |
195 | return &elf_howto_table[(int) R_390_GOT12]; | |
196 | case BFD_RELOC_32_GOT_PCREL: | |
197 | return &elf_howto_table[(int) R_390_GOT32]; | |
198 | case BFD_RELOC_390_PLT32: | |
199 | return &elf_howto_table[(int) R_390_PLT32]; | |
200 | case BFD_RELOC_390_COPY: | |
201 | return &elf_howto_table[(int) R_390_COPY]; | |
202 | case BFD_RELOC_390_GLOB_DAT: | |
203 | return &elf_howto_table[(int) R_390_GLOB_DAT]; | |
204 | case BFD_RELOC_390_JMP_SLOT: | |
205 | return &elf_howto_table[(int) R_390_JMP_SLOT]; | |
206 | case BFD_RELOC_390_RELATIVE: | |
207 | return &elf_howto_table[(int) R_390_RELATIVE]; | |
208 | case BFD_RELOC_32_GOTOFF: | |
5236c819 | 209 | return &elf_howto_table[(int) R_390_GOTOFF32]; |
0451c93c MS |
210 | case BFD_RELOC_390_GOTPC: |
211 | return &elf_howto_table[(int) R_390_GOTPC]; | |
212 | case BFD_RELOC_390_GOT16: | |
213 | return &elf_howto_table[(int) R_390_GOT16]; | |
214 | case BFD_RELOC_16_PCREL: | |
215 | return &elf_howto_table[(int) R_390_PC16]; | |
216 | case BFD_RELOC_390_PC16DBL: | |
217 | return &elf_howto_table[(int) R_390_PC16DBL]; | |
218 | case BFD_RELOC_390_PLT16DBL: | |
219 | return &elf_howto_table[(int) R_390_PLT16DBL]; | |
befc3abb MS |
220 | case BFD_RELOC_390_PC32DBL: |
221 | return &elf_howto_table[(int) R_390_PC32DBL]; | |
222 | case BFD_RELOC_390_PLT32DBL: | |
223 | return &elf_howto_table[(int) R_390_PLT32DBL]; | |
224 | case BFD_RELOC_390_GOTPCDBL: | |
225 | return &elf_howto_table[(int) R_390_GOTPCDBL]; | |
226 | case BFD_RELOC_390_GOTENT: | |
227 | return &elf_howto_table[(int) R_390_GOTENT]; | |
5236c819 MS |
228 | case BFD_RELOC_16_GOTOFF: |
229 | return &elf_howto_table[(int) R_390_GOTOFF16]; | |
230 | case BFD_RELOC_390_GOTPLT12: | |
231 | return &elf_howto_table[(int) R_390_GOTPLT12]; | |
232 | case BFD_RELOC_390_GOTPLT16: | |
233 | return &elf_howto_table[(int) R_390_GOTPLT16]; | |
234 | case BFD_RELOC_390_GOTPLT32: | |
235 | return &elf_howto_table[(int) R_390_GOTPLT32]; | |
236 | case BFD_RELOC_390_GOTPLTENT: | |
237 | return &elf_howto_table[(int) R_390_GOTPLTENT]; | |
238 | case BFD_RELOC_390_PLTOFF16: | |
239 | return &elf_howto_table[(int) R_390_PLTOFF16]; | |
240 | case BFD_RELOC_390_PLTOFF32: | |
241 | return &elf_howto_table[(int) R_390_PLTOFF32]; | |
0451c93c MS |
242 | case BFD_RELOC_VTABLE_INHERIT: |
243 | return &elf32_s390_vtinherit_howto; | |
244 | case BFD_RELOC_VTABLE_ENTRY: | |
245 | return &elf32_s390_vtentry_howto; | |
246 | default: | |
247 | break; | |
248 | } | |
a85d7ed0 NC |
249 | return 0; |
250 | } | |
251 | ||
252 | /* We need to use ELF32_R_TYPE so we have our own copy of this function, | |
253 | and elf32-s390.c has its own copy. */ | |
254 | ||
255 | static void | |
256 | elf_s390_info_to_howto (abfd, cache_ptr, dst) | |
257 | bfd *abfd ATTRIBUTE_UNUSED; | |
258 | arelent *cache_ptr; | |
259 | Elf_Internal_Rela *dst; | |
260 | { | |
261 | switch (ELF32_R_TYPE(dst->r_info)) | |
262 | { | |
263 | case R_390_GNU_VTINHERIT: | |
264 | cache_ptr->howto = &elf32_s390_vtinherit_howto; | |
265 | break; | |
266 | ||
267 | case R_390_GNU_VTENTRY: | |
268 | cache_ptr->howto = &elf32_s390_vtentry_howto; | |
269 | break; | |
270 | ||
271 | default: | |
272 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_390_max); | |
273 | cache_ptr->howto = &elf_howto_table[ELF32_R_TYPE(dst->r_info)]; | |
dc810e39 | 274 | } |
a85d7ed0 NC |
275 | } |
276 | ||
b34976b6 | 277 | static bfd_boolean |
a85d7ed0 NC |
278 | elf_s390_is_local_label_name (abfd, name) |
279 | bfd *abfd; | |
280 | const char *name; | |
281 | { | |
282 | if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L')) | |
b34976b6 | 283 | return TRUE; |
a85d7ed0 NC |
284 | |
285 | return _bfd_elf_is_local_label_name (abfd, name); | |
286 | } | |
287 | ||
288 | /* Functions for the 390 ELF linker. */ | |
289 | ||
290 | /* The name of the dynamic interpreter. This is put in the .interp | |
291 | section. */ | |
292 | ||
293 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
294 | ||
a85d7ed0 NC |
295 | /* The size in bytes of the first entry in the procedure linkage table. */ |
296 | #define PLT_FIRST_ENTRY_SIZE 32 | |
297 | /* The size in bytes of an entry in the procedure linkage table. */ | |
dc810e39 | 298 | #define PLT_ENTRY_SIZE 32 |
a85d7ed0 NC |
299 | |
300 | #define GOT_ENTRY_SIZE 4 | |
301 | ||
302 | /* The first three entries in a procedure linkage table are reserved, | |
303 | and the initial contents are unimportant (we zero them out). | |
304 | Subsequent entries look like this. See the SVR4 ABI 386 | |
305 | supplement to see how this works. */ | |
306 | ||
307 | /* For the s390, simple addr offset can only be 0 - 4096. | |
308 | To use the full 2 GB address space, several instructions | |
309 | are needed to load an address in a register and execute | |
310 | a branch( or just saving the address) | |
311 | ||
dc810e39 | 312 | Furthermore, only r 0 and 1 are free to use!!! */ |
a85d7ed0 NC |
313 | |
314 | /* The first 3 words in the GOT are then reserved. | |
315 | Word 0 is the address of the dynamic table. | |
316 | Word 1 is a pointer to a structure describing the object | |
317 | Word 2 is used to point to the loader entry address. | |
318 | ||
319 | The code for position independand PLT entries looks like this: | |
320 | ||
321 | r12 holds addr of the current GOT at entry to the PLT | |
322 | ||
323 | The GOT holds the address in the PLT to be executed. | |
324 | The loader then gets: | |
325 | 24(15) = Pointer to the structure describing the object. | |
dc810e39 | 326 | 28(15) = Offset in symbol table |
a85d7ed0 NC |
327 | |
328 | The loader must then find the module where the function is | |
329 | and insert the address in the GOT. | |
330 | ||
331 | Note: 390 can only address +- 64 K relative. | |
332 | We check if offset > 65536, then make a relative branch -64xxx | |
333 | back to a previous defined branch | |
334 | ||
335 | PLT1: BASR 1,0 # 2 bytes | |
336 | L 1,22(1) # 4 bytes Load offset in GOT in r 1 | |
337 | L 1,(1,12) # 4 bytes Load address from GOT in r1 | |
338 | BCR 15,1 # 2 bytes Jump to address | |
339 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
340 | L 1,14(1) # 4 bytes Load offset in symol table in r1 | |
341 | BRC 15,-x # 4 bytes Jump to start of PLT | |
342 | .word 0 # 2 bytes filler | |
343 | .long ? # 4 bytes offset in GOT | |
344 | .long ? # 4 bytes offset into symbol table | |
345 | ||
346 | This was the general case. There are two additional, optimizes PLT | |
347 | definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768. | |
348 | First the one for GOT offsets < 4096: | |
349 | ||
350 | PLT1: L 1,<offset>(12) # 4 bytes Load address from GOT in R1 | |
351 | BCR 15,1 # 2 bytes Jump to address | |
352 | .word 0,0,0 # 6 bytes filler | |
353 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
354 | L 1,14(1) # 4 bytes Load offset in symbol table in r1 | |
355 | BRC 15,-x # 4 bytes Jump to start of PLT | |
356 | .word 0,0,0 # 6 bytes filler | |
357 | .long ? # 4 bytes offset into symbol table | |
358 | ||
359 | Second the one for GOT offsets < 32768: | |
360 | ||
361 | PLT1: LHI 1,<offset> # 4 bytes Load offset in GOT to r1 | |
362 | L 1,(1,12) # 4 bytes Load address from GOT to r1 | |
363 | BCR 15,1 # 2 bytes Jump to address | |
364 | .word 0 # 2 bytes filler | |
365 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
366 | L 1,14(1) # 4 bytes Load offset in symbol table in r1 | |
367 | BRC 15,-x # 4 bytes Jump to start of PLT | |
368 | .word 0,0,0 # 6 bytes filler | |
369 | .long ? # 4 bytes offset into symbol table | |
370 | ||
371 | Total = 32 bytes per PLT entry | |
372 | ||
373 | The code for static build PLT entries looks like this: | |
374 | ||
375 | PLT1: BASR 1,0 # 2 bytes | |
376 | L 1,22(1) # 4 bytes Load address of GOT entry | |
377 | L 1,0(0,1) # 4 bytes Load address from GOT in r1 | |
378 | BCR 15,1 # 2 bytes Jump to address | |
379 | RET1: BASR 1,0 # 2 bytes Return from GOT 1st time | |
380 | L 1,14(1) # 4 bytes Load offset in symbol table in r1 | |
381 | BRC 15,-x # 4 bytes Jump to start of PLT | |
382 | .word 0 # 2 bytes filler | |
383 | .long ? # 4 bytes address of GOT entry | |
384 | .long ? # 4 bytes offset into symbol table */ | |
385 | ||
386 | #define PLT_PIC_ENTRY_WORD0 0x0d105810 | |
387 | #define PLT_PIC_ENTRY_WORD1 0x10165811 | |
388 | #define PLT_PIC_ENTRY_WORD2 0xc00007f1 | |
389 | #define PLT_PIC_ENTRY_WORD3 0x0d105810 | |
390 | #define PLT_PIC_ENTRY_WORD4 0x100ea7f4 | |
391 | ||
392 | #define PLT_PIC12_ENTRY_WORD0 0x5810c000 | |
393 | #define PLT_PIC12_ENTRY_WORD1 0x07f10000 | |
394 | #define PLT_PIC12_ENTRY_WORD2 0x00000000 | |
395 | #define PLT_PIC12_ENTRY_WORD3 0x0d105810 | |
396 | #define PLT_PIC12_ENTRY_WORD4 0x100ea7f4 | |
397 | ||
398 | #define PLT_PIC16_ENTRY_WORD0 0xa7180000 | |
399 | #define PLT_PIC16_ENTRY_WORD1 0x5811c000 | |
400 | #define PLT_PIC16_ENTRY_WORD2 0x07f10000 | |
401 | #define PLT_PIC16_ENTRY_WORD3 0x0d105810 | |
402 | #define PLT_PIC16_ENTRY_WORD4 0x100ea7f4 | |
403 | ||
404 | #define PLT_ENTRY_WORD0 0x0d105810 | |
405 | #define PLT_ENTRY_WORD1 0x10165810 | |
406 | #define PLT_ENTRY_WORD2 0x100007f1 | |
407 | #define PLT_ENTRY_WORD3 0x0d105810 | |
408 | #define PLT_ENTRY_WORD4 0x100ea7f4 | |
409 | ||
410 | /* The first PLT entry pushes the offset into the symbol table | |
411 | from R1 onto the stack at 8(15) and the loader object info | |
412 | at 12(15), loads the loader address in R1 and jumps to it. */ | |
413 | ||
414 | /* The first entry in the PLT for PIC code: | |
415 | ||
416 | PLT0: | |
417 | ST 1,28(15) # R1 has offset into symbol table | |
418 | L 1,4(12) # Get loader ino(object struct address) | |
dc810e39 | 419 | ST 1,24(15) # Store address |
a85d7ed0 NC |
420 | L 1,8(12) # Entry address of loader in R1 |
421 | BR 1 # Jump to loader | |
422 | ||
423 | The first entry in the PLT for static code: | |
424 | ||
425 | PLT0: | |
426 | ST 1,28(15) # R1 has offset into symbol table | |
427 | BASR 1,0 | |
428 | L 1,18(0,1) # Get address of GOT | |
429 | MVC 24(4,15),4(1) # Move loader ino to stack | |
430 | L 1,8(1) # Get address of loader | |
431 | BR 1 # Jump to loader | |
432 | .word 0 # filler | |
433 | .long got # address of GOT */ | |
434 | ||
435 | #define PLT_PIC_FIRST_ENTRY_WORD0 0x5010f01c | |
436 | #define PLT_PIC_FIRST_ENTRY_WORD1 0x5810c004 | |
437 | #define PLT_PIC_FIRST_ENTRY_WORD2 0x5010f018 | |
438 | #define PLT_PIC_FIRST_ENTRY_WORD3 0x5810c008 | |
439 | #define PLT_PIC_FIRST_ENTRY_WORD4 0x07f10000 | |
440 | ||
441 | #define PLT_FIRST_ENTRY_WORD0 0x5010f01c | |
442 | #define PLT_FIRST_ENTRY_WORD1 0x0d105810 | |
443 | #define PLT_FIRST_ENTRY_WORD2 0x1012D203 | |
444 | #define PLT_FIRST_ENTRY_WORD3 0xf0181004 | |
445 | #define PLT_FIRST_ENTRY_WORD4 0x58101008 | |
446 | #define PLT_FIRST_ENTRY_WORD5 0x07f10000 | |
447 | ||
448 | /* The s390 linker needs to keep track of the number of relocs that it | |
0451c93c MS |
449 | decides to copy as dynamic relocs in check_relocs for each symbol. |
450 | This is so that it can later discard them if they are found to be | |
451 | unnecessary. We store the information in a field extending the | |
452 | regular ELF linker hash table. */ | |
a85d7ed0 | 453 | |
0451c93c | 454 | struct elf_s390_dyn_relocs |
a85d7ed0 | 455 | { |
0451c93c MS |
456 | struct elf_s390_dyn_relocs *next; |
457 | ||
458 | /* The input section of the reloc. */ | |
459 | asection *sec; | |
460 | ||
461 | /* Total number of relocs copied for the input section. */ | |
a85d7ed0 | 462 | bfd_size_type count; |
0451c93c MS |
463 | |
464 | /* Number of pc-relative relocs copied for the input section. */ | |
465 | bfd_size_type pc_count; | |
a85d7ed0 NC |
466 | }; |
467 | ||
468 | /* s390 ELF linker hash entry. */ | |
469 | ||
470 | struct elf_s390_link_hash_entry | |
471 | { | |
0451c93c | 472 | struct elf_link_hash_entry elf; |
a85d7ed0 | 473 | |
0451c93c MS |
474 | /* Track dynamic relocs copied for this symbol. */ |
475 | struct elf_s390_dyn_relocs *dyn_relocs; | |
5236c819 MS |
476 | |
477 | /* Number of GOTPLT references for a function. */ | |
478 | bfd_signed_vma gotplt_refcount; | |
a85d7ed0 NC |
479 | }; |
480 | ||
481 | /* s390 ELF linker hash table. */ | |
482 | ||
483 | struct elf_s390_link_hash_table | |
484 | { | |
0451c93c | 485 | struct elf_link_hash_table elf; |
a85d7ed0 | 486 | |
0451c93c MS |
487 | /* Short-cuts to get to dynamic linker sections. */ |
488 | asection *sgot; | |
489 | asection *sgotplt; | |
490 | asection *srelgot; | |
491 | asection *splt; | |
492 | asection *srelplt; | |
493 | asection *sdynbss; | |
494 | asection *srelbss; | |
ec338859 AM |
495 | |
496 | /* Small local sym to section mapping cache. */ | |
497 | struct sym_sec_cache sym_sec; | |
0451c93c | 498 | }; |
a85d7ed0 NC |
499 | |
500 | /* Get the s390 ELF linker hash table from a link_info structure. */ | |
501 | ||
502 | #define elf_s390_hash_table(p) \ | |
503 | ((struct elf_s390_link_hash_table *) ((p)->hash)) | |
504 | ||
505 | /* Create an entry in an s390 ELF linker hash table. */ | |
506 | ||
507 | static struct bfd_hash_entry * | |
0451c93c | 508 | link_hash_newfunc (entry, table, string) |
a85d7ed0 NC |
509 | struct bfd_hash_entry *entry; |
510 | struct bfd_hash_table *table; | |
511 | const char *string; | |
512 | { | |
a85d7ed0 NC |
513 | /* Allocate the structure if it has not already been allocated by a |
514 | subclass. */ | |
0451c93c MS |
515 | if (entry == NULL) |
516 | { | |
517 | entry = bfd_hash_allocate (table, | |
518 | sizeof (struct elf_s390_link_hash_entry)); | |
519 | if (entry == NULL) | |
520 | return entry; | |
521 | } | |
ec338859 | 522 | |
a85d7ed0 | 523 | /* Call the allocation method of the superclass. */ |
0451c93c MS |
524 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
525 | if (entry != NULL) | |
a85d7ed0 | 526 | { |
0451c93c | 527 | struct elf_s390_link_hash_entry *eh; |
ec338859 | 528 | |
0451c93c MS |
529 | eh = (struct elf_s390_link_hash_entry *) entry; |
530 | eh->dyn_relocs = NULL; | |
5236c819 | 531 | eh->gotplt_refcount = 0; |
a85d7ed0 NC |
532 | } |
533 | ||
0451c93c | 534 | return entry; |
a85d7ed0 NC |
535 | } |
536 | ||
537 | /* Create an s390 ELF linker hash table. */ | |
538 | ||
539 | static struct bfd_link_hash_table * | |
540 | elf_s390_link_hash_table_create (abfd) | |
541 | bfd *abfd; | |
542 | { | |
543 | struct elf_s390_link_hash_table *ret; | |
dc810e39 | 544 | bfd_size_type amt = sizeof (struct elf_s390_link_hash_table); |
a85d7ed0 | 545 | |
e2d34d7d | 546 | ret = (struct elf_s390_link_hash_table *) bfd_malloc (amt); |
0451c93c | 547 | if (ret == NULL) |
a85d7ed0 NC |
548 | return NULL; |
549 | ||
0451c93c | 550 | if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc)) |
a85d7ed0 | 551 | { |
e2d34d7d | 552 | free (ret); |
a85d7ed0 NC |
553 | return NULL; |
554 | } | |
555 | ||
0451c93c MS |
556 | ret->sgot = NULL; |
557 | ret->sgotplt = NULL; | |
558 | ret->srelgot = NULL; | |
559 | ret->splt = NULL; | |
560 | ret->srelplt = NULL; | |
561 | ret->sdynbss = NULL; | |
562 | ret->srelbss = NULL; | |
ec338859 | 563 | ret->sym_sec.abfd = NULL; |
0451c93c MS |
564 | |
565 | return &ret->elf.root; | |
566 | } | |
567 | ||
568 | /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up | |
569 | shortcuts to them in our hash table. */ | |
570 | ||
b34976b6 | 571 | static bfd_boolean |
0451c93c MS |
572 | create_got_section (dynobj, info) |
573 | bfd *dynobj; | |
574 | struct bfd_link_info *info; | |
575 | { | |
576 | struct elf_s390_link_hash_table *htab; | |
577 | ||
578 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 579 | return FALSE; |
0451c93c MS |
580 | |
581 | htab = elf_s390_hash_table (info); | |
582 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); | |
583 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
584 | if (!htab->sgot || !htab->sgotplt) | |
585 | abort (); | |
586 | ||
587 | htab->srelgot = bfd_make_section (dynobj, ".rela.got"); | |
588 | if (htab->srelgot == NULL | |
589 | || ! bfd_set_section_flags (dynobj, htab->srelgot, | |
590 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
591 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
592 | | SEC_READONLY)) | |
593 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) | |
b34976b6 AM |
594 | return FALSE; |
595 | return TRUE; | |
0451c93c MS |
596 | } |
597 | ||
598 | /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and | |
599 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our | |
600 | hash table. */ | |
601 | ||
b34976b6 | 602 | static bfd_boolean |
0451c93c MS |
603 | elf_s390_create_dynamic_sections (dynobj, info) |
604 | bfd *dynobj; | |
605 | struct bfd_link_info *info; | |
606 | { | |
607 | struct elf_s390_link_hash_table *htab; | |
608 | ||
609 | htab = elf_s390_hash_table (info); | |
610 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
b34976b6 | 611 | return FALSE; |
0451c93c MS |
612 | |
613 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
b34976b6 | 614 | return FALSE; |
0451c93c MS |
615 | |
616 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
617 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
618 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
619 | if (!info->shared) | |
620 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
621 | ||
622 | if (!htab->splt || !htab->srelplt || !htab->sdynbss | |
623 | || (!info->shared && !htab->srelbss)) | |
624 | abort (); | |
625 | ||
b34976b6 | 626 | return TRUE; |
a85d7ed0 NC |
627 | } |
628 | ||
0451c93c MS |
629 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
630 | ||
631 | static void | |
b48fa14c AM |
632 | elf_s390_copy_indirect_symbol (bed, dir, ind) |
633 | struct elf_backend_data *bed; | |
0451c93c MS |
634 | struct elf_link_hash_entry *dir, *ind; |
635 | { | |
636 | struct elf_s390_link_hash_entry *edir, *eind; | |
637 | ||
638 | edir = (struct elf_s390_link_hash_entry *) dir; | |
639 | eind = (struct elf_s390_link_hash_entry *) ind; | |
640 | ||
641 | if (eind->dyn_relocs != NULL) | |
642 | { | |
643 | if (edir->dyn_relocs != NULL) | |
644 | { | |
645 | struct elf_s390_dyn_relocs **pp; | |
646 | struct elf_s390_dyn_relocs *p; | |
647 | ||
648 | if (ind->root.type == bfd_link_hash_indirect) | |
649 | abort (); | |
650 | ||
651 | /* Add reloc counts against the weak sym to the strong sym | |
652 | list. Merge any entries against the same section. */ | |
653 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
654 | { | |
655 | struct elf_s390_dyn_relocs *q; | |
656 | ||
657 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
658 | if (q->sec == p->sec) | |
659 | { | |
660 | q->pc_count += p->pc_count; | |
661 | q->count += p->count; | |
662 | *pp = p->next; | |
663 | break; | |
664 | } | |
665 | if (q == NULL) | |
666 | pp = &p->next; | |
667 | } | |
668 | *pp = edir->dyn_relocs; | |
669 | } | |
670 | ||
671 | edir->dyn_relocs = eind->dyn_relocs; | |
672 | eind->dyn_relocs = NULL; | |
673 | } | |
674 | ||
b48fa14c | 675 | _bfd_elf_link_hash_copy_indirect (bed, dir, ind); |
0451c93c | 676 | } |
a85d7ed0 NC |
677 | |
678 | /* Look through the relocs for a section during the first phase, and | |
679 | allocate space in the global offset table or procedure linkage | |
680 | table. */ | |
681 | ||
b34976b6 | 682 | static bfd_boolean |
a85d7ed0 NC |
683 | elf_s390_check_relocs (abfd, info, sec, relocs) |
684 | bfd *abfd; | |
685 | struct bfd_link_info *info; | |
686 | asection *sec; | |
687 | const Elf_Internal_Rela *relocs; | |
688 | { | |
0451c93c | 689 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
690 | Elf_Internal_Shdr *symtab_hdr; |
691 | struct elf_link_hash_entry **sym_hashes; | |
a85d7ed0 NC |
692 | const Elf_Internal_Rela *rel; |
693 | const Elf_Internal_Rela *rel_end; | |
a85d7ed0 | 694 | asection *sreloc; |
5236c819 | 695 | bfd_signed_vma *local_got_refcounts; |
a85d7ed0 NC |
696 | |
697 | if (info->relocateable) | |
b34976b6 | 698 | return TRUE; |
a85d7ed0 | 699 | |
0451c93c | 700 | htab = elf_s390_hash_table (info); |
a85d7ed0 NC |
701 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
702 | sym_hashes = elf_sym_hashes (abfd); | |
5236c819 | 703 | local_got_refcounts = elf_local_got_refcounts (abfd); |
a85d7ed0 | 704 | |
a85d7ed0 NC |
705 | sreloc = NULL; |
706 | ||
707 | rel_end = relocs + sec->reloc_count; | |
708 | for (rel = relocs; rel < rel_end; rel++) | |
709 | { | |
710 | unsigned long r_symndx; | |
711 | struct elf_link_hash_entry *h; | |
712 | ||
713 | r_symndx = ELF32_R_SYM (rel->r_info); | |
714 | ||
0451c93c MS |
715 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
716 | { | |
717 | (*_bfd_error_handler) (_("%s: bad symbol index: %d"), | |
718 | bfd_archive_filename (abfd), | |
719 | r_symndx); | |
b34976b6 | 720 | return FALSE; |
0451c93c MS |
721 | } |
722 | ||
a85d7ed0 NC |
723 | if (r_symndx < symtab_hdr->sh_info) |
724 | h = NULL; | |
725 | else | |
dc810e39 | 726 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
a85d7ed0 | 727 | |
5236c819 MS |
728 | /* Create got section and local_got_refcounts array if they |
729 | are needed. */ | |
a85d7ed0 NC |
730 | switch (ELF32_R_TYPE (rel->r_info)) |
731 | { | |
732 | case R_390_GOT12: | |
5236c819 | 733 | case R_390_GOT16: |
a85d7ed0 | 734 | case R_390_GOT32: |
befc3abb | 735 | case R_390_GOTENT: |
5236c819 MS |
736 | case R_390_GOTPLT12: |
737 | case R_390_GOTPLT16: | |
738 | case R_390_GOTPLT32: | |
739 | case R_390_GOTPLTENT: | |
740 | if (h == NULL | |
741 | && local_got_refcounts == NULL) | |
a85d7ed0 | 742 | { |
5236c819 MS |
743 | bfd_size_type size; |
744 | ||
745 | size = symtab_hdr->sh_info; | |
746 | size *= sizeof (bfd_signed_vma); | |
747 | local_got_refcounts = ((bfd_signed_vma *) | |
748 | bfd_zalloc (abfd, size)); | |
a85d7ed0 | 749 | if (local_got_refcounts == NULL) |
5236c819 MS |
750 | return FALSE; |
751 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
a85d7ed0 | 752 | } |
5236c819 MS |
753 | /* Fall through. */ |
754 | case R_390_GOTOFF16: | |
755 | case R_390_GOTOFF32: | |
0451c93c | 756 | case R_390_GOTPC: |
befc3abb | 757 | case R_390_GOTPCDBL: |
0451c93c MS |
758 | if (htab->sgot == NULL) |
759 | { | |
760 | if (htab->elf.dynobj == NULL) | |
761 | htab->elf.dynobj = abfd; | |
762 | if (!create_got_section (htab->elf.dynobj, info)) | |
b34976b6 | 763 | return FALSE; |
0451c93c | 764 | } |
5236c819 MS |
765 | } |
766 | ||
767 | switch (ELF32_R_TYPE (rel->r_info)) | |
768 | { | |
769 | case R_390_GOT12: | |
770 | case R_390_GOT16: | |
771 | case R_390_GOT32: | |
772 | case R_390_GOTENT: | |
773 | /* This symbol requires a global offset table entry. */ | |
774 | if (h != NULL) | |
775 | h->got.refcount += 1; | |
776 | else | |
777 | local_got_refcounts[r_symndx] += 1; | |
778 | break; | |
779 | ||
780 | case R_390_GOTOFF16: | |
781 | case R_390_GOTOFF32: | |
782 | case R_390_GOTPC: | |
783 | case R_390_GOTPCDBL: | |
784 | /* Got is created, nothing to be done. */ | |
a85d7ed0 NC |
785 | break; |
786 | ||
787 | case R_390_PLT16DBL: | |
befc3abb | 788 | case R_390_PLT32DBL: |
a85d7ed0 | 789 | case R_390_PLT32: |
5236c819 MS |
790 | case R_390_PLTOFF16: |
791 | case R_390_PLTOFF32: | |
a85d7ed0 NC |
792 | /* This symbol requires a procedure linkage table entry. We |
793 | actually build the entry in adjust_dynamic_symbol, | |
794 | because this might be a case of linking PIC code which is | |
795 | never referenced by a dynamic object, in which case we | |
796 | don't need to generate a procedure linkage table entry | |
797 | after all. */ | |
798 | ||
799 | /* If this is a local symbol, we resolve it directly without | |
800 | creating a procedure linkage table entry. */ | |
5236c819 MS |
801 | if (h != NULL) |
802 | { | |
803 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
804 | h->plt.refcount += 1; | |
805 | } | |
806 | break; | |
a85d7ed0 | 807 | |
5236c819 MS |
808 | case R_390_GOTPLT12: |
809 | case R_390_GOTPLT16: | |
810 | case R_390_GOTPLT32: | |
811 | case R_390_GOTPLTENT: | |
812 | /* This symbol requires either a procedure linkage table entry | |
813 | or an entry in the local got. We actually build the entry | |
814 | in adjust_dynamic_symbol because whether this is really a | |
815 | global reference can change and with it the fact if we have | |
816 | to create a plt entry or a local got entry. To be able to | |
817 | make a once global symbol a local one we have to keep track | |
818 | of the number of gotplt references that exist for this | |
819 | symbol. */ | |
820 | if (h != NULL) | |
821 | { | |
822 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++; | |
823 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
824 | h->plt.refcount += 1; | |
825 | } | |
826 | else | |
827 | local_got_refcounts[r_symndx] += 1; | |
a85d7ed0 NC |
828 | break; |
829 | ||
830 | case R_390_8: | |
831 | case R_390_16: | |
832 | case R_390_32: | |
833 | case R_390_PC16: | |
834 | case R_390_PC16DBL: | |
befc3abb | 835 | case R_390_PC32DBL: |
a85d7ed0 | 836 | case R_390_PC32: |
0451c93c MS |
837 | if (h != NULL && !info->shared) |
838 | { | |
839 | /* If this reloc is in a read-only section, we might | |
840 | need a copy reloc. We can't check reliably at this | |
841 | stage whether the section is read-only, as input | |
842 | sections have not yet been mapped to output sections. | |
843 | Tentatively set the flag for now, and correct in | |
844 | adjust_dynamic_symbol. */ | |
845 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
ec338859 | 846 | |
0451c93c MS |
847 | /* We may need a .plt entry if the function this reloc |
848 | refers to is in a shared lib. */ | |
849 | h->plt.refcount += 1; | |
850 | } | |
a85d7ed0 NC |
851 | |
852 | /* If we are creating a shared library, and this is a reloc | |
0451c93c MS |
853 | against a global symbol, or a non PC relative reloc |
854 | against a local symbol, then we need to copy the reloc | |
855 | into the shared library. However, if we are linking with | |
856 | -Bsymbolic, we do not need to copy a reloc against a | |
857 | global symbol which is defined in an object we are | |
858 | including in the link (i.e., DEF_REGULAR is set). At | |
859 | this point we have not seen all the input files, so it is | |
860 | possible that DEF_REGULAR is not set now but will be set | |
861 | later (it is never cleared). In case of a weak definition, | |
862 | DEF_REGULAR may be cleared later by a strong definition in | |
863 | a shared library. We account for that possibility below by | |
864 | storing information in the relocs_copied field of the hash | |
865 | table entry. A similar situation occurs when creating | |
866 | shared libraries and symbol visibility changes render the | |
867 | symbol local. | |
868 | ||
869 | If on the other hand, we are creating an executable, we | |
870 | may need to keep relocations for symbols satisfied by a | |
871 | dynamic library if we manage to avoid copy relocs for the | |
872 | symbol. */ | |
873 | if ((info->shared | |
874 | && (sec->flags & SEC_ALLOC) != 0 | |
ec338859 | 875 | && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16 |
0451c93c | 876 | && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL |
befc3abb | 877 | && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL |
0451c93c MS |
878 | && ELF32_R_TYPE (rel->r_info) != R_390_PC32) |
879 | || (h != NULL | |
880 | && (! info->symbolic | |
881 | || h->root.type == bfd_link_hash_defweak | |
882 | || (h->elf_link_hash_flags | |
883 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
884 | || (!info->shared | |
885 | && (sec->flags & SEC_ALLOC) != 0 | |
886 | && h != NULL | |
887 | && (h->root.type == bfd_link_hash_defweak | |
888 | || (h->elf_link_hash_flags | |
889 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
a85d7ed0 | 890 | { |
ec338859 AM |
891 | struct elf_s390_dyn_relocs *p; |
892 | struct elf_s390_dyn_relocs **head; | |
893 | ||
0451c93c MS |
894 | /* We must copy these reloc types into the output file. |
895 | Create a reloc section in dynobj and make room for | |
896 | this reloc. */ | |
a85d7ed0 NC |
897 | if (sreloc == NULL) |
898 | { | |
899 | const char *name; | |
0451c93c | 900 | bfd *dynobj; |
ec338859 | 901 | |
a85d7ed0 NC |
902 | name = (bfd_elf_string_from_elf_section |
903 | (abfd, | |
904 | elf_elfheader (abfd)->e_shstrndx, | |
905 | elf_section_data (sec)->rel_hdr.sh_name)); | |
906 | if (name == NULL) | |
b34976b6 | 907 | return FALSE; |
a85d7ed0 | 908 | |
0451c93c MS |
909 | if (strncmp (name, ".rela", 5) != 0 |
910 | || strcmp (bfd_get_section_name (abfd, sec), | |
911 | name + 5) != 0) | |
912 | { | |
913 | (*_bfd_error_handler) | |
914 | (_("%s: bad relocation section name `%s\'"), | |
915 | bfd_archive_filename (abfd), name); | |
916 | } | |
917 | ||
918 | if (htab->elf.dynobj == NULL) | |
919 | htab->elf.dynobj = abfd; | |
a85d7ed0 | 920 | |
0451c93c | 921 | dynobj = htab->elf.dynobj; |
a85d7ed0 NC |
922 | sreloc = bfd_get_section_by_name (dynobj, name); |
923 | if (sreloc == NULL) | |
924 | { | |
925 | flagword flags; | |
926 | ||
927 | sreloc = bfd_make_section (dynobj, name); | |
928 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
929 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
930 | if ((sec->flags & SEC_ALLOC) != 0) | |
931 | flags |= SEC_ALLOC | SEC_LOAD; | |
932 | if (sreloc == NULL | |
933 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
934 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
b34976b6 | 935 | return FALSE; |
a85d7ed0 | 936 | } |
0451c93c | 937 | elf_section_data (sec)->sreloc = sreloc; |
a85d7ed0 NC |
938 | } |
939 | ||
0451c93c MS |
940 | /* If this is a global symbol, we count the number of |
941 | relocations we need for this symbol. */ | |
942 | if (h != NULL) | |
a85d7ed0 | 943 | { |
ec338859 | 944 | head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs; |
0451c93c MS |
945 | } |
946 | else | |
947 | { | |
ec338859 AM |
948 | /* Track dynamic relocs needed for local syms too. |
949 | We really need local syms available to do this | |
950 | easily. Oh well. */ | |
951 | ||
952 | asection *s; | |
953 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
954 | sec, r_symndx); | |
955 | if (s == NULL) | |
b34976b6 | 956 | return FALSE; |
ec338859 AM |
957 | |
958 | head = ((struct elf_s390_dyn_relocs **) | |
959 | &elf_section_data (s)->local_dynrel); | |
960 | } | |
961 | ||
962 | p = *head; | |
963 | if (p == NULL || p->sec != sec) | |
964 | { | |
965 | bfd_size_type amt = sizeof *p; | |
966 | p = ((struct elf_s390_dyn_relocs *) | |
967 | bfd_alloc (htab->elf.dynobj, amt)); | |
968 | if (p == NULL) | |
b34976b6 | 969 | return FALSE; |
ec338859 AM |
970 | p->next = *head; |
971 | *head = p; | |
972 | p->sec = sec; | |
973 | p->count = 0; | |
974 | p->pc_count = 0; | |
a85d7ed0 | 975 | } |
ec338859 AM |
976 | |
977 | p->count += 1; | |
978 | if (ELF32_R_TYPE (rel->r_info) == R_390_PC16 | |
979 | || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL | |
befc3abb | 980 | || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL |
ec338859 AM |
981 | || ELF32_R_TYPE (rel->r_info) == R_390_PC32) |
982 | p->pc_count += 1; | |
a85d7ed0 | 983 | } |
a85d7ed0 | 984 | break; |
ec338859 | 985 | |
a85d7ed0 NC |
986 | /* This relocation describes the C++ object vtable hierarchy. |
987 | Reconstruct it for later use during GC. */ | |
988 | case R_390_GNU_VTINHERIT: | |
989 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 990 | return FALSE; |
a85d7ed0 | 991 | break; |
ec338859 | 992 | |
a85d7ed0 NC |
993 | /* This relocation describes which C++ vtable entries are actually |
994 | used. Record for later use during GC. */ | |
995 | case R_390_GNU_VTENTRY: | |
db727808 | 996 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 997 | return FALSE; |
a85d7ed0 | 998 | break; |
ec338859 | 999 | |
a85d7ed0 NC |
1000 | default: |
1001 | break; | |
1002 | } | |
1003 | } | |
1004 | ||
b34976b6 | 1005 | return TRUE; |
a85d7ed0 NC |
1006 | } |
1007 | ||
1008 | /* Return the section that should be marked against GC for a given | |
1009 | relocation. */ | |
1010 | ||
1011 | static asection * | |
1e2f5b6e AM |
1012 | elf_s390_gc_mark_hook (sec, info, rel, h, sym) |
1013 | asection *sec; | |
a85d7ed0 NC |
1014 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
1015 | Elf_Internal_Rela *rel; | |
1016 | struct elf_link_hash_entry *h; | |
1017 | Elf_Internal_Sym *sym; | |
1018 | { | |
1019 | if (h != NULL) | |
1020 | { | |
1021 | switch (ELF32_R_TYPE (rel->r_info)) | |
1022 | { | |
1023 | case R_390_GNU_VTINHERIT: | |
1024 | case R_390_GNU_VTENTRY: | |
1025 | break; | |
1026 | ||
1027 | default: | |
1028 | switch (h->root.type) | |
1029 | { | |
1030 | case bfd_link_hash_defined: | |
1031 | case bfd_link_hash_defweak: | |
1032 | return h->root.u.def.section; | |
1033 | ||
1034 | case bfd_link_hash_common: | |
1035 | return h->root.u.c.p->section; | |
1036 | ||
1037 | default: | |
1038 | break; | |
1039 | } | |
1040 | } | |
1041 | } | |
1042 | else | |
1e2f5b6e | 1043 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
a85d7ed0 NC |
1044 | |
1045 | return NULL; | |
1046 | } | |
1047 | ||
1048 | /* Update the got entry reference counts for the section being removed. */ | |
1049 | ||
b34976b6 | 1050 | static bfd_boolean |
a85d7ed0 | 1051 | elf_s390_gc_sweep_hook (abfd, info, sec, relocs) |
0451c93c MS |
1052 | bfd *abfd; |
1053 | struct bfd_link_info *info; | |
1054 | asection *sec; | |
1055 | const Elf_Internal_Rela *relocs; | |
a85d7ed0 NC |
1056 | { |
1057 | Elf_Internal_Shdr *symtab_hdr; | |
1058 | struct elf_link_hash_entry **sym_hashes; | |
1059 | bfd_signed_vma *local_got_refcounts; | |
1060 | const Elf_Internal_Rela *rel, *relend; | |
1061 | unsigned long r_symndx; | |
1062 | struct elf_link_hash_entry *h; | |
a85d7ed0 | 1063 | |
ec338859 | 1064 | elf_section_data (sec)->local_dynrel = NULL; |
a85d7ed0 | 1065 | |
0451c93c MS |
1066 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1067 | sym_hashes = elf_sym_hashes (abfd); | |
1068 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
a85d7ed0 NC |
1069 | |
1070 | relend = relocs + sec->reloc_count; | |
1071 | for (rel = relocs; rel < relend; rel++) | |
5236c819 MS |
1072 | { |
1073 | r_symndx = ELF32_R_SYM (rel->r_info); | |
0451c93c | 1074 | |
5236c819 MS |
1075 | if (r_symndx < symtab_hdr->sh_info) |
1076 | h = NULL; | |
1077 | else | |
1078 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1079 | ||
1080 | switch (ELF32_R_TYPE (rel->r_info)) | |
1081 | { | |
1082 | case R_390_GOT12: | |
1083 | case R_390_GOT16: | |
1084 | case R_390_GOT32: | |
1085 | case R_390_GOTOFF16: | |
1086 | case R_390_GOTOFF32: | |
1087 | case R_390_GOTPC: | |
1088 | case R_390_GOTPCDBL: | |
1089 | case R_390_GOTENT: | |
1090 | if (h != NULL) | |
1091 | { | |
1092 | if (h->got.refcount > 0) | |
1093 | h->got.refcount -= 1; | |
1094 | } | |
1095 | else if (local_got_refcounts != NULL) | |
1096 | { | |
1097 | if (local_got_refcounts[r_symndx] > 0) | |
1098 | local_got_refcounts[r_symndx] -= 1; | |
1099 | } | |
1100 | break; | |
1101 | ||
1102 | case R_390_PLT16DBL: | |
1103 | case R_390_PLT32DBL: | |
1104 | case R_390_PLT32: | |
1105 | case R_390_PLTOFF16: | |
1106 | case R_390_PLTOFF32: | |
1107 | if (h != NULL) | |
1108 | { | |
1109 | if (h->plt.refcount > 0) | |
1110 | h->plt.refcount -= 1; | |
1111 | } | |
1112 | break; | |
1113 | ||
1114 | case R_390_GOTPLT12: | |
1115 | case R_390_GOTPLT16: | |
1116 | case R_390_GOTPLT32: | |
1117 | case R_390_GOTPLTENT: | |
1118 | if (h != NULL) | |
1119 | { | |
1120 | if (h->plt.refcount > 0) | |
0451c93c | 1121 | { |
5236c819 MS |
1122 | ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--; |
1123 | h->plt.refcount -= 1; | |
0451c93c | 1124 | } |
5236c819 MS |
1125 | } |
1126 | else if (local_got_refcounts != NULL) | |
1127 | { | |
1128 | if (local_got_refcounts[r_symndx] > 0) | |
1129 | local_got_refcounts[r_symndx] -= 1; | |
1130 | } | |
1131 | break; | |
a85d7ed0 | 1132 | |
5236c819 MS |
1133 | case R_390_8: |
1134 | case R_390_12: | |
1135 | case R_390_16: | |
1136 | case R_390_32: | |
1137 | case R_390_PC16: | |
1138 | case R_390_PC16DBL: | |
1139 | case R_390_PC32DBL: | |
1140 | case R_390_PC32: | |
1141 | if (h != NULL) | |
1142 | { | |
1143 | struct elf_s390_link_hash_entry *eh; | |
1144 | struct elf_s390_dyn_relocs **pp; | |
1145 | struct elf_s390_dyn_relocs *p; | |
1146 | ||
1147 | if (!info->shared && h->plt.refcount > 0) | |
1148 | h->plt.refcount -= 1; | |
1149 | ||
1150 | eh = (struct elf_s390_link_hash_entry *) h; | |
1151 | ||
1152 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
1153 | if (p->sec == sec) | |
1154 | { | |
1155 | if (ELF32_R_TYPE (rel->r_info) == R_390_PC16 | |
1156 | || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL | |
1157 | || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL | |
1158 | || ELF32_R_TYPE (rel->r_info) == R_390_PC32) | |
1159 | p->pc_count -= 1; | |
1160 | p->count -= 1; | |
1161 | if (p->count == 0) | |
1162 | *pp = p->next; | |
1163 | break; | |
1164 | } | |
1165 | } | |
1166 | break; | |
1167 | ||
1168 | default: | |
1169 | break; | |
1170 | } | |
1171 | } | |
a85d7ed0 | 1172 | |
b34976b6 | 1173 | return TRUE; |
a85d7ed0 NC |
1174 | } |
1175 | ||
5236c819 MS |
1176 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
1177 | entry but we found we will not create any. Called when we find we will | |
1178 | not have any PLT for this symbol, by for example | |
1179 | elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
1180 | or elf_s390_size_dynamic_sections if no dynamic sections will be | |
1181 | created (we're only linking static objects). */ | |
1182 | ||
1183 | static void | |
1184 | elf_s390_adjust_gotplt (h) | |
1185 | struct elf_s390_link_hash_entry *h; | |
1186 | { | |
1187 | if (h->elf.root.type == bfd_link_hash_warning) | |
1188 | h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link; | |
1189 | ||
1190 | if (h->gotplt_refcount <= 0) | |
1191 | return; | |
1192 | ||
1193 | /* We simply add the number of gotplt references to the number | |
1194 | * of got references for this symbol. */ | |
1195 | h->elf.got.refcount += h->gotplt_refcount; | |
1196 | h->gotplt_refcount = -1; | |
1197 | } | |
1198 | ||
a85d7ed0 NC |
1199 | /* Adjust a symbol defined by a dynamic object and referenced by a |
1200 | regular object. The current definition is in some section of the | |
1201 | dynamic object, but we're not including those sections. We have to | |
1202 | change the definition to something the rest of the link can | |
1203 | understand. */ | |
1204 | ||
b34976b6 | 1205 | static bfd_boolean |
a85d7ed0 NC |
1206 | elf_s390_adjust_dynamic_symbol (info, h) |
1207 | struct bfd_link_info *info; | |
1208 | struct elf_link_hash_entry *h; | |
1209 | { | |
0451c93c MS |
1210 | struct elf_s390_link_hash_table *htab; |
1211 | struct elf_s390_link_hash_entry * eh; | |
1212 | struct elf_s390_dyn_relocs *p; | |
a85d7ed0 NC |
1213 | asection *s; |
1214 | unsigned int power_of_two; | |
1215 | ||
a85d7ed0 NC |
1216 | /* If this is a function, put it in the procedure linkage table. We |
1217 | will fill in the contents of the procedure linkage table later | |
cedb70c5 | 1218 | (although we could actually do it here). */ |
a85d7ed0 NC |
1219 | if (h->type == STT_FUNC |
1220 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
1221 | { | |
0451c93c MS |
1222 | if (h->plt.refcount <= 0 |
1223 | || (! info->shared | |
1224 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 | |
f9cd9119 MS |
1225 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0 |
1226 | && h->root.type != bfd_link_hash_undefweak | |
1227 | && h->root.type != bfd_link_hash_undefined)) | |
a85d7ed0 NC |
1228 | { |
1229 | /* This case can occur if we saw a PLT32 reloc in an input | |
1230 | file, but the symbol was never referred to by a dynamic | |
1231 | object, or if all references were garbage collected. In | |
1232 | such a case, we don't actually need to build a procedure | |
1233 | linkage table, and we can just do a PC32 reloc instead. */ | |
1234 | h->plt.offset = (bfd_vma) -1; | |
1235 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
5236c819 | 1236 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
a85d7ed0 NC |
1237 | } |
1238 | ||
b34976b6 | 1239 | return TRUE; |
a85d7ed0 | 1240 | } |
bbd7ec4a | 1241 | else |
0451c93c MS |
1242 | /* It's possible that we incorrectly decided a .plt reloc was |
1243 | needed for an R_390_PC32 reloc to a non-function sym in | |
1244 | check_relocs. We can't decide accurately between function and | |
1245 | non-function syms in check-relocs; Objects loaded later in | |
1246 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1247 | h->plt.offset = (bfd_vma) -1; |
a85d7ed0 NC |
1248 | |
1249 | /* If this is a weak symbol, and there is a real definition, the | |
1250 | processor independent code will have arranged for us to see the | |
1251 | real definition first, and we can just use the same value. */ | |
1252 | if (h->weakdef != NULL) | |
1253 | { | |
1254 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
1255 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1256 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1257 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
b34976b6 | 1258 | return TRUE; |
a85d7ed0 NC |
1259 | } |
1260 | ||
1261 | /* This is a reference to a symbol defined by a dynamic object which | |
1262 | is not a function. */ | |
1263 | ||
1264 | /* If we are creating a shared library, we must presume that the | |
1265 | only references to the symbol are via the global offset table. | |
1266 | For such cases we need not do anything here; the relocations will | |
1267 | be handled correctly by relocate_section. */ | |
1268 | if (info->shared) | |
b34976b6 | 1269 | return TRUE; |
a85d7ed0 NC |
1270 | |
1271 | /* If there are no references to this symbol that do not use the | |
1272 | GOT, we don't need to generate a copy reloc. */ | |
1273 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
b34976b6 | 1274 | return TRUE; |
a85d7ed0 | 1275 | |
0451c93c MS |
1276 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1277 | if (info->nocopyreloc) | |
1278 | { | |
1279 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
b34976b6 | 1280 | return TRUE; |
0451c93c MS |
1281 | } |
1282 | ||
1283 | eh = (struct elf_s390_link_hash_entry *) h; | |
1284 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1285 | { | |
1286 | s = p->sec->output_section; | |
1287 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1288 | break; | |
1289 | } | |
1290 | ||
1291 | /* If we didn't find any dynamic relocs in read-only sections, then | |
ec338859 | 1292 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
0451c93c MS |
1293 | if (p == NULL) |
1294 | { | |
1295 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
b34976b6 | 1296 | return TRUE; |
0451c93c MS |
1297 | } |
1298 | ||
a85d7ed0 NC |
1299 | /* We must allocate the symbol in our .dynbss section, which will |
1300 | become part of the .bss section of the executable. There will be | |
1301 | an entry for this symbol in the .dynsym section. The dynamic | |
1302 | object will contain position independent code, so all references | |
1303 | from the dynamic object to this symbol will go through the global | |
1304 | offset table. The dynamic linker will use the .dynsym entry to | |
1305 | determine the address it must put in the global offset table, so | |
1306 | both the dynamic object and the regular object will refer to the | |
1307 | same memory location for the variable. */ | |
1308 | ||
0451c93c | 1309 | htab = elf_s390_hash_table (info); |
a85d7ed0 | 1310 | |
0451c93c MS |
1311 | /* We must generate a R_390_COPY reloc to tell the dynamic linker to |
1312 | copy the initial value out of the dynamic object and into the | |
1313 | runtime process image. */ | |
a85d7ed0 NC |
1314 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
1315 | { | |
0451c93c | 1316 | htab->srelbss->_raw_size += sizeof (Elf32_External_Rela); |
a85d7ed0 NC |
1317 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
1318 | } | |
1319 | ||
1320 | /* We need to figure out the alignment required for this symbol. I | |
1321 | have no idea how ELF linkers handle this. */ | |
1322 | power_of_two = bfd_log2 (h->size); | |
1323 | if (power_of_two > 3) | |
1324 | power_of_two = 3; | |
1325 | ||
1326 | /* Apply the required alignment. */ | |
0451c93c MS |
1327 | s = htab->sdynbss; |
1328 | s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two)); | |
1329 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) | |
a85d7ed0 | 1330 | { |
0451c93c | 1331 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 1332 | return FALSE; |
a85d7ed0 NC |
1333 | } |
1334 | ||
1335 | /* Define the symbol as being at this point in the section. */ | |
1336 | h->root.u.def.section = s; | |
1337 | h->root.u.def.value = s->_raw_size; | |
1338 | ||
1339 | /* Increment the section size to make room for the symbol. */ | |
1340 | s->_raw_size += h->size; | |
1341 | ||
b34976b6 | 1342 | return TRUE; |
a85d7ed0 NC |
1343 | } |
1344 | ||
0451c93c MS |
1345 | /* This is the condition under which elf_s390_finish_dynamic_symbol |
1346 | will be called from elflink.h. If elflink.h doesn't call our | |
1347 | finish_dynamic_symbol routine, we'll need to do something about | |
1348 | initializing any .plt and .got entries in elf_s390_relocate_section. */ | |
1349 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \ | |
1350 | ((DYN) \ | |
1351 | && ((INFO)->shared \ | |
1352 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ | |
1353 | && ((H)->dynindx != -1 \ | |
1354 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) | |
1355 | ||
1356 | /* Allocate space in .plt, .got and associated reloc sections for | |
1357 | dynamic relocs. */ | |
1358 | ||
b34976b6 | 1359 | static bfd_boolean |
0451c93c MS |
1360 | allocate_dynrelocs (h, inf) |
1361 | struct elf_link_hash_entry *h; | |
1362 | PTR inf; | |
1363 | { | |
1364 | struct bfd_link_info *info; | |
1365 | struct elf_s390_link_hash_table *htab; | |
1366 | struct elf_s390_link_hash_entry *eh; | |
1367 | struct elf_s390_dyn_relocs *p; | |
1368 | ||
e92d460e | 1369 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1370 | return TRUE; |
0451c93c | 1371 | |
e92d460e | 1372 | if (h->root.type == bfd_link_hash_warning) |
5236c819 MS |
1373 | /* When warning symbols are created, they **replace** the "real" |
1374 | entry in the hash table, thus we never get to see the real | |
1375 | symbol in a hash traversal. So look at it now. */ | |
e92d460e AM |
1376 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
1377 | ||
0451c93c MS |
1378 | info = (struct bfd_link_info *) inf; |
1379 | htab = elf_s390_hash_table (info); | |
1380 | ||
1381 | if (htab->elf.dynamic_sections_created | |
1382 | && h->plt.refcount > 0) | |
1383 | { | |
1384 | /* Make sure this symbol is output as a dynamic symbol. | |
1385 | Undefined weak syms won't yet be marked as dynamic. */ | |
1386 | if (h->dynindx == -1 | |
1387 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1388 | { | |
1389 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1390 | return FALSE; |
0451c93c MS |
1391 | } |
1392 | ||
1393 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h)) | |
1394 | { | |
1395 | asection *s = htab->splt; | |
1396 | ||
1397 | /* If this is the first .plt entry, make room for the special | |
1398 | first entry. */ | |
1399 | if (s->_raw_size == 0) | |
1400 | s->_raw_size += PLT_FIRST_ENTRY_SIZE; | |
1401 | ||
1402 | h->plt.offset = s->_raw_size; | |
1403 | ||
1404 | /* If this symbol is not defined in a regular file, and we are | |
1405 | not generating a shared library, then set the symbol to this | |
1406 | location in the .plt. This is required to make function | |
1407 | pointers compare as equal between the normal executable and | |
1408 | the shared library. */ | |
1409 | if (! info->shared | |
1410 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1411 | { | |
1412 | h->root.u.def.section = s; | |
1413 | h->root.u.def.value = h->plt.offset; | |
1414 | } | |
ec338859 | 1415 | |
0451c93c MS |
1416 | /* Make room for this entry. */ |
1417 | s->_raw_size += PLT_ENTRY_SIZE; | |
ec338859 | 1418 | |
0451c93c MS |
1419 | /* We also need to make an entry in the .got.plt section, which |
1420 | will be placed in the .got section by the linker script. */ | |
1421 | htab->sgotplt->_raw_size += GOT_ENTRY_SIZE; | |
1422 | ||
1423 | /* We also need to make an entry in the .rela.plt section. */ | |
1424 | htab->srelplt->_raw_size += sizeof (Elf32_External_Rela); | |
1425 | } | |
1426 | else | |
1427 | { | |
1428 | h->plt.offset = (bfd_vma) -1; | |
1429 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
5236c819 | 1430 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
0451c93c | 1431 | } |
ec338859 | 1432 | } |
0451c93c MS |
1433 | else |
1434 | { | |
1435 | h->plt.offset = (bfd_vma) -1; | |
1436 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
5236c819 | 1437 | elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h); |
ec338859 AM |
1438 | } |
1439 | ||
0451c93c MS |
1440 | if (h->got.refcount > 0) |
1441 | { | |
1442 | asection *s; | |
b34976b6 | 1443 | bfd_boolean dyn; |
0451c93c MS |
1444 | |
1445 | /* Make sure this symbol is output as a dynamic symbol. | |
1446 | Undefined weak syms won't yet be marked as dynamic. */ | |
1447 | if (h->dynindx == -1 | |
1448 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1449 | { | |
1450 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1451 | return FALSE; |
0451c93c MS |
1452 | } |
1453 | ||
1454 | s = htab->sgot; | |
1455 | h->got.offset = s->_raw_size; | |
1456 | s->_raw_size += GOT_ENTRY_SIZE; | |
1457 | dyn = htab->elf.dynamic_sections_created; | |
1458 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)) | |
1459 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
1460 | } | |
1461 | else | |
1462 | h->got.offset = (bfd_vma) -1; | |
1463 | ||
1464 | eh = (struct elf_s390_link_hash_entry *) h; | |
1465 | if (eh->dyn_relocs == NULL) | |
b34976b6 | 1466 | return TRUE; |
0451c93c MS |
1467 | |
1468 | /* In the shared -Bsymbolic case, discard space allocated for | |
1469 | dynamic pc-relative relocs against symbols which turn out to be | |
1470 | defined in regular objects. For the normal shared case, discard | |
1471 | space for pc-relative relocs that have become local due to symbol | |
1472 | visibility changes. */ | |
1473 | ||
1474 | if (info->shared) | |
1475 | { | |
1476 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
1477 | && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 | |
1478 | || info->symbolic)) | |
1479 | { | |
1480 | struct elf_s390_dyn_relocs **pp; | |
1481 | ||
1482 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1483 | { | |
1484 | p->count -= p->pc_count; | |
1485 | p->pc_count = 0; | |
1486 | if (p->count == 0) | |
1487 | *pp = p->next; | |
1488 | else | |
1489 | pp = &p->next; | |
1490 | } | |
1491 | } | |
1492 | } | |
1493 | else | |
1494 | { | |
1495 | /* For the non-shared case, discard space for relocs against | |
1496 | symbols which turn out to need copy relocs or are not | |
1497 | dynamic. */ | |
1498 | ||
1499 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
1500 | && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
1501 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1502 | || (htab->elf.dynamic_sections_created | |
1503 | && (h->root.type == bfd_link_hash_undefweak | |
1504 | || h->root.type == bfd_link_hash_undefined)))) | |
1505 | { | |
1506 | /* Make sure this symbol is output as a dynamic symbol. | |
1507 | Undefined weak syms won't yet be marked as dynamic. */ | |
1508 | if (h->dynindx == -1 | |
1509 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1510 | { | |
1511 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1512 | return FALSE; |
0451c93c MS |
1513 | } |
1514 | ||
1515 | /* If that succeeded, we know we'll be keeping all the | |
1516 | relocs. */ | |
1517 | if (h->dynindx != -1) | |
1518 | goto keep; | |
1519 | } | |
1520 | ||
1521 | eh->dyn_relocs = NULL; | |
1522 | ||
ec338859 | 1523 | keep: ; |
0451c93c MS |
1524 | } |
1525 | ||
1526 | /* Finally, allocate space. */ | |
1527 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1528 | { | |
1529 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
1530 | sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela); | |
1531 | } | |
1532 | ||
b34976b6 | 1533 | return TRUE; |
0451c93c MS |
1534 | } |
1535 | ||
1536 | /* Find any dynamic relocs that apply to read-only sections. */ | |
1537 | ||
b34976b6 | 1538 | static bfd_boolean |
0451c93c MS |
1539 | readonly_dynrelocs (h, inf) |
1540 | struct elf_link_hash_entry *h; | |
1541 | PTR inf; | |
1542 | { | |
1543 | struct elf_s390_link_hash_entry *eh; | |
1544 | struct elf_s390_dyn_relocs *p; | |
1545 | ||
e92d460e AM |
1546 | if (h->root.type == bfd_link_hash_warning) |
1547 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1548 | ||
0451c93c MS |
1549 | eh = (struct elf_s390_link_hash_entry *) h; |
1550 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1551 | { | |
1552 | asection *s = p->sec->output_section; | |
1553 | ||
1554 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1555 | { | |
1556 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
1557 | ||
1558 | info->flags |= DF_TEXTREL; | |
1559 | ||
1560 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 1561 | return FALSE; |
0451c93c MS |
1562 | } |
1563 | } | |
b34976b6 | 1564 | return TRUE; |
0451c93c MS |
1565 | } |
1566 | ||
a85d7ed0 NC |
1567 | /* Set the sizes of the dynamic sections. */ |
1568 | ||
b34976b6 | 1569 | static bfd_boolean |
a85d7ed0 | 1570 | elf_s390_size_dynamic_sections (output_bfd, info) |
29c2fb7c | 1571 | bfd *output_bfd ATTRIBUTE_UNUSED; |
a85d7ed0 NC |
1572 | struct bfd_link_info *info; |
1573 | { | |
0451c93c | 1574 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
1575 | bfd *dynobj; |
1576 | asection *s; | |
b34976b6 | 1577 | bfd_boolean relocs; |
0451c93c | 1578 | bfd *ibfd; |
a85d7ed0 | 1579 | |
0451c93c MS |
1580 | htab = elf_s390_hash_table (info); |
1581 | dynobj = htab->elf.dynobj; | |
1582 | if (dynobj == NULL) | |
1583 | abort (); | |
a85d7ed0 | 1584 | |
0451c93c | 1585 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
1586 | { |
1587 | /* Set the contents of the .interp section to the interpreter. */ | |
1588 | if (! info->shared) | |
1589 | { | |
1590 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
0451c93c MS |
1591 | if (s == NULL) |
1592 | abort (); | |
a85d7ed0 NC |
1593 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
1594 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
1595 | } | |
1596 | } | |
a85d7ed0 | 1597 | |
0451c93c MS |
1598 | /* Set up .got offsets for local syms, and space for local dynamic |
1599 | relocs. */ | |
1600 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
a85d7ed0 | 1601 | { |
0451c93c MS |
1602 | bfd_signed_vma *local_got; |
1603 | bfd_signed_vma *end_local_got; | |
1604 | bfd_size_type locsymcount; | |
1605 | Elf_Internal_Shdr *symtab_hdr; | |
1606 | asection *srela; | |
a85d7ed0 | 1607 | |
0451c93c | 1608 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
a85d7ed0 NC |
1609 | continue; |
1610 | ||
0451c93c | 1611 | for (s = ibfd->sections; s != NULL; s = s->next) |
a85d7ed0 | 1612 | { |
ec338859 | 1613 | struct elf_s390_dyn_relocs *p; |
0451c93c | 1614 | |
ec338859 AM |
1615 | for (p = *((struct elf_s390_dyn_relocs **) |
1616 | &elf_section_data (s)->local_dynrel); | |
1617 | p != NULL; | |
1618 | p = p->next) | |
a85d7ed0 | 1619 | { |
ec338859 AM |
1620 | if (!bfd_is_abs_section (p->sec) |
1621 | && bfd_is_abs_section (p->sec->output_section)) | |
1622 | { | |
1623 | /* Input section has been discarded, either because | |
1624 | it is a copy of a linkonce section or due to | |
1625 | linker script /DISCARD/, so we'll be discarding | |
1626 | the relocs too. */ | |
1627 | } | |
248866a8 | 1628 | else if (p->count != 0) |
ec338859 AM |
1629 | { |
1630 | srela = elf_section_data (p->sec)->sreloc; | |
1631 | srela->_raw_size += p->count * sizeof (Elf32_External_Rela); | |
248866a8 AM |
1632 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
1633 | info->flags |= DF_TEXTREL; | |
ec338859 | 1634 | } |
a85d7ed0 NC |
1635 | } |
1636 | } | |
0451c93c MS |
1637 | |
1638 | local_got = elf_local_got_refcounts (ibfd); | |
1639 | if (!local_got) | |
1640 | continue; | |
1641 | ||
1642 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
1643 | locsymcount = symtab_hdr->sh_info; | |
1644 | end_local_got = local_got + locsymcount; | |
1645 | s = htab->sgot; | |
1646 | srela = htab->srelgot; | |
1647 | for (; local_got < end_local_got; ++local_got) | |
a85d7ed0 | 1648 | { |
0451c93c | 1649 | if (*local_got > 0) |
a85d7ed0 | 1650 | { |
0451c93c MS |
1651 | *local_got = s->_raw_size; |
1652 | s->_raw_size += GOT_ENTRY_SIZE; | |
1653 | if (info->shared) | |
1654 | srela->_raw_size += sizeof (Elf32_External_Rela); | |
a85d7ed0 NC |
1655 | } |
1656 | else | |
0451c93c MS |
1657 | *local_got = (bfd_vma) -1; |
1658 | } | |
1659 | } | |
1660 | ||
1661 | /* Allocate global sym .plt and .got entries, and space for global | |
1662 | sym dynamic relocs. */ | |
1663 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); | |
1664 | ||
1665 | /* We now have determined the sizes of the various dynamic sections. | |
1666 | Allocate memory for them. */ | |
b34976b6 | 1667 | relocs = FALSE; |
0451c93c MS |
1668 | for (s = dynobj->sections; s != NULL; s = s->next) |
1669 | { | |
1670 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1671 | continue; | |
1672 | ||
1673 | if (s == htab->splt | |
1674 | || s == htab->sgot | |
1675 | || s == htab->sgotplt) | |
1676 | { | |
1677 | /* Strip this section if we don't need it; see the | |
1678 | comment below. */ | |
a85d7ed0 | 1679 | } |
0451c93c MS |
1680 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) |
1681 | { | |
1682 | if (s->_raw_size != 0 && s != htab->srelplt) | |
b34976b6 | 1683 | relocs = TRUE; |
ec338859 | 1684 | |
0451c93c MS |
1685 | /* We use the reloc_count field as a counter if we need |
1686 | to copy relocs into the output file. */ | |
1687 | s->reloc_count = 0; | |
1688 | } | |
1689 | else | |
a85d7ed0 NC |
1690 | { |
1691 | /* It's not one of our sections, so don't allocate space. */ | |
1692 | continue; | |
1693 | } | |
1694 | ||
0451c93c | 1695 | if (s->_raw_size == 0) |
a85d7ed0 | 1696 | { |
0451c93c MS |
1697 | /* If we don't need this section, strip it from the |
1698 | output file. This is to handle .rela.bss and | |
1699 | .rela.plt. We must create it in | |
1700 | create_dynamic_sections, because it must be created | |
1701 | before the linker maps input sections to output | |
1702 | sections. The linker does that before | |
1703 | adjust_dynamic_symbol is called, and it is that | |
1704 | function which decides whether anything needs to go | |
1705 | into these sections. */ | |
1706 | ||
a85d7ed0 NC |
1707 | _bfd_strip_section_from_output (info, s); |
1708 | continue; | |
1709 | } | |
1710 | ||
0451c93c MS |
1711 | /* Allocate memory for the section contents. We use bfd_zalloc |
1712 | here in case unused entries are not reclaimed before the | |
1713 | section's contents are written out. This should not happen, | |
1714 | but this way if it does, we get a R_390_NONE reloc instead | |
1715 | of garbage. */ | |
1716 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); | |
1717 | if (s->contents == NULL) | |
b34976b6 | 1718 | return FALSE; |
a85d7ed0 | 1719 | } |
ec338859 | 1720 | |
0451c93c | 1721 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 NC |
1722 | { |
1723 | /* Add some entries to the .dynamic section. We fill in the | |
1724 | values later, in elf_s390_finish_dynamic_sections, but we | |
1725 | must add the entries now so that we get the correct size for | |
1726 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1727 | dynamic linker and used by the debugger. */ | |
dc810e39 AM |
1728 | #define add_dynamic_entry(TAG, VAL) \ |
1729 | bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) | |
ec338859 | 1730 | |
a85d7ed0 NC |
1731 | if (! info->shared) |
1732 | { | |
dc810e39 | 1733 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 1734 | return FALSE; |
a85d7ed0 | 1735 | } |
ec338859 | 1736 | |
0451c93c | 1737 | if (htab->splt->_raw_size != 0) |
a85d7ed0 | 1738 | { |
dc810e39 AM |
1739 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
1740 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1741 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1742 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1743 | return FALSE; |
a85d7ed0 | 1744 | } |
ec338859 | 1745 | |
a85d7ed0 NC |
1746 | if (relocs) |
1747 | { | |
dc810e39 AM |
1748 | if (!add_dynamic_entry (DT_RELA, 0) |
1749 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1750 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 1751 | return FALSE; |
a85d7ed0 | 1752 | |
0451c93c MS |
1753 | /* If any dynamic relocs apply to a read-only section, |
1754 | then we need a DT_TEXTREL entry. */ | |
248866a8 AM |
1755 | if ((info->flags & DF_TEXTREL) == 0) |
1756 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, | |
1757 | (PTR) info); | |
ec338859 | 1758 | |
0451c93c MS |
1759 | if ((info->flags & DF_TEXTREL) != 0) |
1760 | { | |
1761 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 1762 | return FALSE; |
0451c93c | 1763 | } |
a85d7ed0 NC |
1764 | } |
1765 | } | |
dc810e39 | 1766 | #undef add_dynamic_entry |
ec338859 | 1767 | |
b34976b6 | 1768 | return TRUE; |
a85d7ed0 NC |
1769 | } |
1770 | ||
a85d7ed0 NC |
1771 | /* Relocate a 390 ELF section. */ |
1772 | ||
b34976b6 | 1773 | static bfd_boolean |
a85d7ed0 NC |
1774 | elf_s390_relocate_section (output_bfd, info, input_bfd, input_section, |
1775 | contents, relocs, local_syms, local_sections) | |
1776 | bfd *output_bfd; | |
1777 | struct bfd_link_info *info; | |
1778 | bfd *input_bfd; | |
1779 | asection *input_section; | |
1780 | bfd_byte *contents; | |
1781 | Elf_Internal_Rela *relocs; | |
1782 | Elf_Internal_Sym *local_syms; | |
1783 | asection **local_sections; | |
1784 | { | |
0451c93c | 1785 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
1786 | Elf_Internal_Shdr *symtab_hdr; |
1787 | struct elf_link_hash_entry **sym_hashes; | |
1788 | bfd_vma *local_got_offsets; | |
a85d7ed0 NC |
1789 | Elf_Internal_Rela *rel; |
1790 | Elf_Internal_Rela *relend; | |
1791 | ||
b491616a | 1792 | if (info->relocateable) |
b34976b6 | 1793 | return TRUE; |
b491616a | 1794 | |
0451c93c | 1795 | htab = elf_s390_hash_table (info); |
a85d7ed0 NC |
1796 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
1797 | sym_hashes = elf_sym_hashes (input_bfd); | |
1798 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1799 | ||
a85d7ed0 NC |
1800 | rel = relocs; |
1801 | relend = relocs + input_section->reloc_count; | |
1802 | for (; rel < relend; rel++) | |
1803 | { | |
5236c819 | 1804 | unsigned int r_type; |
a85d7ed0 NC |
1805 | reloc_howto_type *howto; |
1806 | unsigned long r_symndx; | |
1807 | struct elf_link_hash_entry *h; | |
1808 | Elf_Internal_Sym *sym; | |
1809 | asection *sec; | |
0451c93c | 1810 | bfd_vma off; |
a85d7ed0 | 1811 | bfd_vma relocation; |
b34976b6 | 1812 | bfd_boolean unresolved_reloc; |
a85d7ed0 | 1813 | bfd_reloc_status_type r; |
ec338859 | 1814 | |
a85d7ed0 NC |
1815 | r_type = ELF32_R_TYPE (rel->r_info); |
1816 | if (r_type == (int) R_390_GNU_VTINHERIT | |
1817 | || r_type == (int) R_390_GNU_VTENTRY) | |
1818 | continue; | |
5236c819 | 1819 | if (r_type >= (int) R_390_max) |
a85d7ed0 NC |
1820 | { |
1821 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1822 | return FALSE; |
a85d7ed0 | 1823 | } |
ec338859 | 1824 | |
b491616a | 1825 | howto = elf_howto_table + r_type; |
a85d7ed0 | 1826 | r_symndx = ELF32_R_SYM (rel->r_info); |
5236c819 MS |
1827 | |
1828 | /* This is a final link. */ | |
a85d7ed0 NC |
1829 | h = NULL; |
1830 | sym = NULL; | |
1831 | sec = NULL; | |
b34976b6 | 1832 | unresolved_reloc = FALSE; |
a85d7ed0 NC |
1833 | if (r_symndx < symtab_hdr->sh_info) |
1834 | { | |
1835 | sym = local_syms + r_symndx; | |
1836 | sec = local_sections[r_symndx]; | |
f8df10f4 | 1837 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); |
a85d7ed0 NC |
1838 | } |
1839 | else | |
1840 | { | |
1841 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1842 | while (h->root.type == bfd_link_hash_indirect | |
1843 | || h->root.type == bfd_link_hash_warning) | |
1844 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
ec338859 | 1845 | |
a85d7ed0 NC |
1846 | if (h->root.type == bfd_link_hash_defined |
1847 | || h->root.type == bfd_link_hash_defweak) | |
1848 | { | |
1849 | sec = h->root.u.def.section; | |
27018c3f | 1850 | if (sec->output_section == NULL) |
a85d7ed0 | 1851 | { |
0451c93c MS |
1852 | /* Set a flag that will be cleared later if we find a |
1853 | relocation value for this symbol. output_section | |
1854 | is typically NULL for symbols satisfied by a shared | |
1855 | library. */ | |
b34976b6 | 1856 | unresolved_reloc = TRUE; |
a85d7ed0 NC |
1857 | relocation = 0; |
1858 | } | |
1859 | else | |
1860 | relocation = (h->root.u.def.value | |
1861 | + sec->output_section->vma | |
1862 | + sec->output_offset); | |
1863 | } | |
1864 | else if (h->root.type == bfd_link_hash_undefweak) | |
1865 | relocation = 0; | |
671bae9c NC |
1866 | else if (info->shared |
1867 | && (!info->symbolic || info->allow_shlib_undefined) | |
a85d7ed0 NC |
1868 | && !info->no_undefined |
1869 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
1870 | relocation = 0; | |
1871 | else | |
1872 | { | |
1873 | if (! ((*info->callbacks->undefined_symbol) | |
1874 | (info, h->root.root.string, input_bfd, | |
1875 | input_section, rel->r_offset, | |
0451c93c MS |
1876 | (!info->shared || info->no_undefined |
1877 | || ELF_ST_VISIBILITY (h->other))))) | |
b34976b6 | 1878 | return FALSE; |
a85d7ed0 NC |
1879 | relocation = 0; |
1880 | } | |
1881 | } | |
ec338859 | 1882 | |
a85d7ed0 NC |
1883 | switch (r_type) |
1884 | { | |
5236c819 MS |
1885 | case R_390_GOTPLT12: |
1886 | case R_390_GOTPLT16: | |
1887 | case R_390_GOTPLT32: | |
1888 | case R_390_GOTPLTENT: | |
1889 | /* There are three cases for a GOTPLT relocation. 1) The | |
1890 | relocation is against the jump slot entry of a plt that | |
1891 | will get emitted to the output file. 2) The relocation | |
1892 | is against the jump slot of a plt entry that has been | |
1893 | removed. elf_s390_adjust_gotplt has created a GOT entry | |
1894 | as replacement. 3) The relocation is against a local symbol. | |
1895 | Cases 2) and 3) are the same as the GOT relocation code | |
1896 | so we just have to test for case 1 and fall through for | |
1897 | the other two. */ | |
1898 | if (h != NULL && h->plt.offset != (bfd_vma) -1) | |
1899 | { | |
1900 | bfd_vma plt_index; | |
1901 | ||
1902 | /* Calc. index no. | |
1903 | Current offset - size first entry / entry size. */ | |
1904 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / | |
1905 | PLT_ENTRY_SIZE; | |
1906 | ||
1907 | /* Offset in GOT is PLT index plus GOT headers(3) times 4, | |
1908 | addr & GOT addr. */ | |
1909 | relocation = (plt_index + 3) * GOT_ENTRY_SIZE; | |
1910 | unresolved_reloc = FALSE; | |
1911 | ||
1912 | if (r_type == R_390_GOTPLTENT) | |
1913 | relocation += htab->sgot->output_section->vma; | |
1914 | break; | |
1915 | } | |
1916 | /* Fall through. */ | |
1917 | ||
a85d7ed0 NC |
1918 | case R_390_GOT12: |
1919 | case R_390_GOT16: | |
1920 | case R_390_GOT32: | |
befc3abb | 1921 | case R_390_GOTENT: |
a85d7ed0 NC |
1922 | /* Relocation is to the entry for this symbol in the global |
1923 | offset table. */ | |
0451c93c MS |
1924 | if (htab->sgot == NULL) |
1925 | abort (); | |
ec338859 | 1926 | |
a85d7ed0 NC |
1927 | if (h != NULL) |
1928 | { | |
b34976b6 | 1929 | bfd_boolean dyn; |
ec338859 | 1930 | |
a85d7ed0 | 1931 | off = h->got.offset; |
0451c93c MS |
1932 | dyn = htab->elf.dynamic_sections_created; |
1933 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h) | |
a85d7ed0 | 1934 | || (info->shared |
0451c93c MS |
1935 | && (info->symbolic |
1936 | || h->dynindx == -1 | |
1937 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) | |
a85d7ed0 NC |
1938 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) |
1939 | { | |
1940 | /* This is actually a static link, or it is a | |
1941 | -Bsymbolic link and the symbol is defined | |
1942 | locally, or the symbol was forced to be local | |
1943 | because of a version file. We must initialize | |
1944 | this entry in the global offset table. Since the | |
1945 | offset must always be a multiple of 2, we use the | |
1946 | least significant bit to record whether we have | |
1947 | initialized it already. | |
1948 | ||
1949 | When doing a dynamic link, we create a .rel.got | |
1950 | relocation entry to initialize the value. This | |
1951 | is done in the finish_dynamic_symbol routine. */ | |
1952 | if ((off & 1) != 0) | |
1953 | off &= ~1; | |
1954 | else | |
1955 | { | |
1956 | bfd_put_32 (output_bfd, relocation, | |
0451c93c | 1957 | htab->sgot->contents + off); |
a85d7ed0 NC |
1958 | h->got.offset |= 1; |
1959 | } | |
1960 | } | |
0451c93c | 1961 | else |
b34976b6 | 1962 | unresolved_reloc = FALSE; |
a85d7ed0 NC |
1963 | } |
1964 | else | |
1965 | { | |
0451c93c MS |
1966 | if (local_got_offsets == NULL) |
1967 | abort (); | |
a85d7ed0 NC |
1968 | |
1969 | off = local_got_offsets[r_symndx]; | |
1970 | ||
1971 | /* The offset must always be a multiple of 4. We use | |
1972 | the least significant bit to record whether we have | |
1973 | already generated the necessary reloc. */ | |
1974 | if ((off & 1) != 0) | |
1975 | off &= ~1; | |
1976 | else | |
1977 | { | |
0451c93c MS |
1978 | bfd_put_32 (output_bfd, relocation, |
1979 | htab->sgot->contents + off); | |
a85d7ed0 NC |
1980 | |
1981 | if (info->shared) | |
1982 | { | |
1983 | asection *srelgot; | |
1984 | Elf_Internal_Rela outrel; | |
947216bf | 1985 | bfd_byte *loc; |
a85d7ed0 | 1986 | |
0451c93c MS |
1987 | srelgot = htab->srelgot; |
1988 | if (srelgot == NULL) | |
1989 | abort (); | |
a85d7ed0 | 1990 | |
0451c93c MS |
1991 | outrel.r_offset = (htab->sgot->output_section->vma |
1992 | + htab->sgot->output_offset | |
a85d7ed0 NC |
1993 | + off); |
1994 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
1995 | outrel.r_addend = relocation; | |
947216bf AM |
1996 | loc = srelgot->contents; |
1997 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 1998 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
a85d7ed0 NC |
1999 | } |
2000 | ||
2001 | local_got_offsets[r_symndx] |= 1; | |
2002 | } | |
a85d7ed0 NC |
2003 | } |
2004 | ||
0451c93c MS |
2005 | if (off >= (bfd_vma) -2) |
2006 | abort (); | |
a85d7ed0 | 2007 | |
0451c93c | 2008 | relocation = htab->sgot->output_offset + off; |
befc3abb MS |
2009 | |
2010 | /* | |
2011 | * For @GOTENT the relocation is against the offset between | |
2012 | * the instruction and the symbols entry in the GOT and not | |
2013 | * between the start of the GOT and the symbols entry. We | |
2014 | * add the vma of the GOT to get the correct value. | |
2015 | */ | |
5236c819 MS |
2016 | if ( r_type == R_390_GOTENT |
2017 | || r_type == R_390_GOTPLTENT) | |
befc3abb MS |
2018 | relocation += htab->sgot->output_section->vma; |
2019 | ||
a85d7ed0 | 2020 | break; |
dc810e39 | 2021 | |
5236c819 MS |
2022 | case R_390_GOTOFF16: |
2023 | case R_390_GOTOFF32: | |
a85d7ed0 NC |
2024 | /* Relocation is relative to the start of the global offset |
2025 | table. */ | |
2026 | ||
a85d7ed0 NC |
2027 | /* Note that sgot->output_offset is not involved in this |
2028 | calculation. We always want the start of .got. If we | |
2029 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
2030 | permitted by the ABI, we might have to change this | |
2031 | calculation. */ | |
0451c93c | 2032 | relocation -= htab->sgot->output_section->vma; |
a85d7ed0 NC |
2033 | break; |
2034 | ||
2035 | case R_390_GOTPC: | |
befc3abb | 2036 | case R_390_GOTPCDBL: |
a85d7ed0 | 2037 | /* Use global offset table as symbol value. */ |
0451c93c | 2038 | relocation = htab->sgot->output_section->vma; |
b34976b6 | 2039 | unresolved_reloc = FALSE; |
a85d7ed0 NC |
2040 | break; |
2041 | ||
2042 | case R_390_PLT16DBL: | |
befc3abb | 2043 | case R_390_PLT32DBL: |
a85d7ed0 NC |
2044 | case R_390_PLT32: |
2045 | /* Relocation is to the entry for this symbol in the | |
2046 | procedure linkage table. */ | |
2047 | ||
2048 | /* Resolve a PLT32 reloc against a local symbol directly, | |
2049 | without using the procedure linkage table. */ | |
2050 | if (h == NULL) | |
2051 | break; | |
2052 | ||
0451c93c MS |
2053 | if (h->plt.offset == (bfd_vma) -1 |
2054 | || htab->splt == NULL) | |
a85d7ed0 NC |
2055 | { |
2056 | /* We didn't make a PLT entry for this symbol. This | |
2057 | happens when statically linking PIC code, or when | |
2058 | using -Bsymbolic. */ | |
2059 | break; | |
2060 | } | |
2061 | ||
0451c93c MS |
2062 | relocation = (htab->splt->output_section->vma |
2063 | + htab->splt->output_offset | |
a85d7ed0 | 2064 | + h->plt.offset); |
b34976b6 | 2065 | unresolved_reloc = FALSE; |
a85d7ed0 NC |
2066 | break; |
2067 | ||
5236c819 MS |
2068 | case R_390_PLTOFF16: |
2069 | case R_390_PLTOFF32: | |
2070 | /* Relocation is to the entry for this symbol in the | |
2071 | procedure linkage table relative to the start of the GOT. */ | |
2072 | ||
2073 | /* For local symbols or if we didn't make a PLT entry for | |
2074 | this symbol resolve the symbol directly. */ | |
2075 | if ( h == NULL | |
2076 | || h->plt.offset == (bfd_vma) -1 | |
2077 | || htab->splt == NULL) | |
2078 | { | |
2079 | relocation -= htab->sgot->output_section->vma; | |
2080 | break; | |
2081 | } | |
2082 | ||
2083 | relocation = (htab->splt->output_section->vma | |
2084 | + htab->splt->output_offset | |
2085 | + h->plt.offset | |
2086 | - htab->sgot->output_section->vma); | |
2087 | unresolved_reloc = FALSE; | |
2088 | break; | |
2089 | ||
a85d7ed0 NC |
2090 | case R_390_8: |
2091 | case R_390_16: | |
2092 | case R_390_32: | |
2093 | case R_390_PC16: | |
2094 | case R_390_PC16DBL: | |
befc3abb | 2095 | case R_390_PC32DBL: |
a85d7ed0 | 2096 | case R_390_PC32: |
ec338859 AM |
2097 | /* r_symndx will be zero only for relocs against symbols |
2098 | from removed linkonce sections, or sections discarded by | |
2099 | a linker script. */ | |
2100 | if (r_symndx == 0 | |
2101 | || (input_section->flags & SEC_ALLOC) == 0) | |
2102 | break; | |
2103 | ||
0451c93c | 2104 | if ((info->shared |
0451c93c MS |
2105 | && ((r_type != R_390_PC16 |
2106 | && r_type != R_390_PC16DBL | |
befc3abb | 2107 | && r_type != R_390_PC32DBL |
0451c93c MS |
2108 | && r_type != R_390_PC32) |
2109 | || (h != NULL | |
2110 | && h->dynindx != -1 | |
2111 | && (! info->symbolic | |
2112 | || (h->elf_link_hash_flags | |
2113 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
2114 | || (!info->shared | |
0451c93c MS |
2115 | && h != NULL |
2116 | && h->dynindx != -1 | |
2117 | && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
2118 | && (((h->elf_link_hash_flags | |
2119 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
2120 | && (h->elf_link_hash_flags | |
2121 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
2122 | || h->root.type == bfd_link_hash_undefweak | |
2123 | || h->root.type == bfd_link_hash_undefined))) | |
a85d7ed0 NC |
2124 | { |
2125 | Elf_Internal_Rela outrel; | |
b34976b6 | 2126 | bfd_boolean skip, relocate; |
0451c93c | 2127 | asection *sreloc; |
947216bf | 2128 | bfd_byte *loc; |
ec338859 | 2129 | |
0451c93c MS |
2130 | /* When generating a shared object, these relocations |
2131 | are copied into the output file to be resolved at run | |
2132 | time. */ | |
ec338859 | 2133 | |
b34976b6 AM |
2134 | skip = FALSE; |
2135 | relocate = FALSE; | |
ec338859 | 2136 | |
c629eae0 JJ |
2137 | outrel.r_offset = |
2138 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2139 | rel->r_offset); | |
2140 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2141 | skip = TRUE; |
0bb2d96a | 2142 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2143 | skip = TRUE, relocate = TRUE; |
a85d7ed0 NC |
2144 | outrel.r_offset += (input_section->output_section->vma |
2145 | + input_section->output_offset); | |
ec338859 | 2146 | |
a85d7ed0 | 2147 | if (skip) |
0bb2d96a | 2148 | memset (&outrel, 0, sizeof outrel); |
0451c93c MS |
2149 | else if (h != NULL |
2150 | && h->dynindx != -1 | |
2151 | && (r_type == R_390_PC16 | |
2152 | || r_type == R_390_PC16DBL | |
befc3abb | 2153 | || r_type == R_390_PC32DBL |
0451c93c MS |
2154 | || r_type == R_390_PC32 |
2155 | || !info->shared | |
2156 | || !info->symbolic | |
2157 | || (h->elf_link_hash_flags | |
2158 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
a85d7ed0 | 2159 | { |
a85d7ed0 | 2160 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
27018c3f | 2161 | outrel.r_addend = rel->r_addend; |
a85d7ed0 NC |
2162 | } |
2163 | else | |
2164 | { | |
0451c93c | 2165 | /* This symbol is local, or marked to become local. */ |
b34976b6 | 2166 | relocate = TRUE; |
0451c93c MS |
2167 | outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); |
2168 | outrel.r_addend = relocation + rel->r_addend; | |
a85d7ed0 | 2169 | } |
ec338859 | 2170 | |
0451c93c MS |
2171 | sreloc = elf_section_data (input_section)->sreloc; |
2172 | if (sreloc == NULL) | |
2173 | abort (); | |
ec338859 | 2174 | |
947216bf AM |
2175 | loc = sreloc->contents; |
2176 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 2177 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
ec338859 | 2178 | |
a85d7ed0 NC |
2179 | /* If this reloc is against an external symbol, we do |
2180 | not want to fiddle with the addend. Otherwise, we | |
2181 | need to include the symbol value so that it becomes | |
2182 | an addend for the dynamic reloc. */ | |
2183 | if (! relocate) | |
2184 | continue; | |
2185 | } | |
0451c93c | 2186 | break; |
ec338859 | 2187 | |
0451c93c MS |
2188 | default: |
2189 | break; | |
2190 | } | |
ec338859 | 2191 | |
239e1f3a AM |
2192 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
2193 | because such sections are not SEC_ALLOC and thus ld.so will | |
2194 | not process them. */ | |
0451c93c | 2195 | if (unresolved_reloc |
239e1f3a | 2196 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
0451c93c MS |
2197 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) |
2198 | (*_bfd_error_handler) | |
2199 | (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"), | |
2200 | bfd_archive_filename (input_bfd), | |
2201 | bfd_get_section_name (input_bfd, input_section), | |
2202 | (long) rel->r_offset, | |
2203 | h->root.root.string); | |
ec338859 | 2204 | |
a85d7ed0 | 2205 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
0451c93c MS |
2206 | contents, rel->r_offset, |
2207 | relocation, rel->r_addend); | |
ec338859 | 2208 | |
a85d7ed0 NC |
2209 | if (r != bfd_reloc_ok) |
2210 | { | |
0451c93c | 2211 | const char *name; |
ec338859 | 2212 | |
0451c93c MS |
2213 | if (h != NULL) |
2214 | name = h->root.root.string; | |
2215 | else | |
a85d7ed0 | 2216 | { |
0451c93c MS |
2217 | name = bfd_elf_string_from_elf_section (input_bfd, |
2218 | symtab_hdr->sh_link, | |
2219 | sym->st_name); | |
2220 | if (name == NULL) | |
b34976b6 | 2221 | return FALSE; |
0451c93c MS |
2222 | if (*name == '\0') |
2223 | name = bfd_section_name (input_bfd, sec); | |
2224 | } | |
ec338859 | 2225 | |
0451c93c MS |
2226 | if (r == bfd_reloc_overflow) |
2227 | { | |
ec338859 | 2228 | |
0451c93c MS |
2229 | if (! ((*info->callbacks->reloc_overflow) |
2230 | (info, name, howto->name, (bfd_vma) 0, | |
2231 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 2232 | return FALSE; |
0451c93c MS |
2233 | } |
2234 | else | |
2235 | { | |
2236 | (*_bfd_error_handler) | |
2237 | (_("%s(%s+0x%lx): reloc against `%s': error %d"), | |
2238 | bfd_archive_filename (input_bfd), | |
2239 | bfd_get_section_name (input_bfd, input_section), | |
2240 | (long) rel->r_offset, name, (int) r); | |
b34976b6 | 2241 | return FALSE; |
a85d7ed0 NC |
2242 | } |
2243 | } | |
2244 | } | |
ec338859 | 2245 | |
b34976b6 | 2246 | return TRUE; |
a85d7ed0 NC |
2247 | } |
2248 | ||
2249 | /* Finish up dynamic symbol handling. We set the contents of various | |
2250 | dynamic sections here. */ | |
2251 | ||
b34976b6 | 2252 | static bfd_boolean |
a85d7ed0 NC |
2253 | elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym) |
2254 | bfd *output_bfd; | |
2255 | struct bfd_link_info *info; | |
2256 | struct elf_link_hash_entry *h; | |
2257 | Elf_Internal_Sym *sym; | |
2258 | { | |
0451c93c | 2259 | struct elf_s390_link_hash_table *htab; |
ec338859 | 2260 | |
0451c93c | 2261 | htab = elf_s390_hash_table (info); |
ec338859 | 2262 | |
a85d7ed0 NC |
2263 | if (h->plt.offset != (bfd_vma) -1) |
2264 | { | |
0451c93c MS |
2265 | bfd_vma plt_index; |
2266 | bfd_vma got_offset; | |
a85d7ed0 | 2267 | Elf_Internal_Rela rela; |
947216bf | 2268 | bfd_byte *loc; |
a85d7ed0 | 2269 | bfd_vma relative_offset; |
ec338859 | 2270 | |
a85d7ed0 NC |
2271 | /* This symbol has an entry in the procedure linkage table. Set |
2272 | it up. */ | |
ec338859 | 2273 | |
0451c93c MS |
2274 | if (h->dynindx == -1 |
2275 | || htab->splt == NULL | |
2276 | || htab->sgotplt == NULL | |
2277 | || htab->srelplt == NULL) | |
2278 | abort (); | |
a85d7ed0 | 2279 | |
dc810e39 | 2280 | /* Calc. index no. |
a85d7ed0 NC |
2281 | Current offset - size first entry / entry size. */ |
2282 | plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
2283 | ||
2284 | /* Offset in GOT is PLT index plus GOT headers(3) times 4, | |
2285 | addr & GOT addr. */ | |
2286 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
2287 | ||
2288 | /* S390 uses halfwords for relative branch calc! */ | |
dc810e39 AM |
2289 | relative_offset = - ((PLT_FIRST_ENTRY_SIZE + |
2290 | (PLT_ENTRY_SIZE * plt_index) + 18) / 2); | |
a85d7ed0 NC |
2291 | /* If offset is > 32768, branch to a previous branch |
2292 | 390 can only handle +-64 K jumps. */ | |
dc810e39 AM |
2293 | if ( -32768 > (int) relative_offset ) |
2294 | relative_offset = | |
2295 | -(unsigned) (((65536 / PLT_ENTRY_SIZE - 1) * PLT_ENTRY_SIZE) / 2); | |
a85d7ed0 NC |
2296 | |
2297 | /* Fill in the entry in the procedure linkage table. */ | |
2298 | if (!info->shared) | |
0451c93c MS |
2299 | { |
2300 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD0, | |
2301 | htab->splt->contents + h->plt.offset); | |
2302 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD1, | |
2303 | htab->splt->contents + h->plt.offset + 4); | |
2304 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2, | |
2305 | htab->splt->contents + h->plt.offset + 8); | |
2306 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3, | |
2307 | htab->splt->contents + h->plt.offset + 12); | |
2308 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD4, | |
2309 | htab->splt->contents + h->plt.offset + 16); | |
2310 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
2311 | htab->splt->contents + h->plt.offset + 20); | |
2312 | bfd_put_32 (output_bfd, | |
2313 | (htab->sgotplt->output_section->vma | |
2314 | + htab->sgotplt->output_offset | |
2315 | + got_offset), | |
2316 | htab->splt->contents + h->plt.offset + 24); | |
2317 | } | |
a85d7ed0 | 2318 | else if (got_offset < 4096) |
0451c93c MS |
2319 | { |
2320 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD0 + got_offset, | |
2321 | htab->splt->contents + h->plt.offset); | |
2322 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD1, | |
2323 | htab->splt->contents + h->plt.offset + 4); | |
2324 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD2, | |
2325 | htab->splt->contents + h->plt.offset + 8); | |
2326 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD3, | |
2327 | htab->splt->contents + h->plt.offset + 12); | |
2328 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC12_ENTRY_WORD4, | |
2329 | htab->splt->contents + h->plt.offset + 16); | |
2330 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
2331 | htab->splt->contents + h->plt.offset + 20); | |
2332 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
2333 | htab->splt->contents + h->plt.offset + 24); | |
2334 | } | |
a85d7ed0 | 2335 | else if (got_offset < 32768) |
0451c93c MS |
2336 | { |
2337 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD0 + got_offset, | |
2338 | htab->splt->contents + h->plt.offset); | |
2339 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD1, | |
2340 | htab->splt->contents + h->plt.offset + 4); | |
2341 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD2, | |
2342 | htab->splt->contents + h->plt.offset + 8); | |
2343 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD3, | |
2344 | htab->splt->contents + h->plt.offset + 12); | |
2345 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC16_ENTRY_WORD4, | |
2346 | htab->splt->contents + h->plt.offset + 16); | |
2347 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
2348 | htab->splt->contents + h->plt.offset + 20); | |
2349 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
2350 | htab->splt->contents + h->plt.offset + 24); | |
2351 | } | |
a85d7ed0 | 2352 | else |
0451c93c MS |
2353 | { |
2354 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD0, | |
2355 | htab->splt->contents + h->plt.offset); | |
2356 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD1, | |
2357 | htab->splt->contents + h->plt.offset + 4); | |
2358 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2, | |
2359 | htab->splt->contents + h->plt.offset + 8); | |
2360 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3, | |
2361 | htab->splt->contents + h->plt.offset + 12); | |
2362 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4, | |
2363 | htab->splt->contents + h->plt.offset + 16); | |
2364 | bfd_put_32 (output_bfd, (bfd_vma) 0+(relative_offset << 16), | |
2365 | htab->splt->contents + h->plt.offset + 20); | |
2366 | bfd_put_32 (output_bfd, got_offset, | |
2367 | htab->splt->contents + h->plt.offset + 24); | |
2368 | } | |
a85d7ed0 NC |
2369 | /* Insert offset into reloc. table here. */ |
2370 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
0451c93c | 2371 | htab->splt->contents + h->plt.offset + 28); |
a85d7ed0 NC |
2372 | |
2373 | /* Fill in the entry in the global offset table. | |
2374 | Points to instruction after GOT offset. */ | |
2375 | bfd_put_32 (output_bfd, | |
0451c93c MS |
2376 | (htab->splt->output_section->vma |
2377 | + htab->splt->output_offset | |
a85d7ed0 NC |
2378 | + h->plt.offset |
2379 | + 12), | |
0451c93c | 2380 | htab->sgotplt->contents + got_offset); |
a85d7ed0 | 2381 | |
0451c93c MS |
2382 | /* Fill in the entry in the .rela.plt section. */ |
2383 | rela.r_offset = (htab->sgotplt->output_section->vma | |
2384 | + htab->sgotplt->output_offset | |
2385 | + got_offset); | |
2386 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT); | |
2387 | rela.r_addend = 0; | |
947216bf | 2388 | loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rela); |
0451c93c | 2389 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
ec338859 | 2390 | |
a85d7ed0 NC |
2391 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
2392 | { | |
2393 | /* Mark the symbol as undefined, rather than as defined in | |
0451c93c MS |
2394 | the .plt section. Leave the value alone. This is a clue |
2395 | for the dynamic linker, to make function pointer | |
2396 | comparisons work between an application and shared | |
ec338859 | 2397 | library. */ |
a85d7ed0 NC |
2398 | sym->st_shndx = SHN_UNDEF; |
2399 | } | |
2400 | } | |
ec338859 | 2401 | |
a85d7ed0 NC |
2402 | if (h->got.offset != (bfd_vma) -1) |
2403 | { | |
a85d7ed0 | 2404 | Elf_Internal_Rela rela; |
947216bf | 2405 | bfd_byte *loc; |
a85d7ed0 NC |
2406 | |
2407 | /* This symbol has an entry in the global offset table. Set it | |
2408 | up. */ | |
2409 | ||
0451c93c MS |
2410 | if (htab->sgot == NULL || htab->srelgot == NULL) |
2411 | abort (); | |
a85d7ed0 | 2412 | |
0451c93c MS |
2413 | rela.r_offset = (htab->sgot->output_section->vma |
2414 | + htab->sgot->output_offset | |
dc810e39 | 2415 | + (h->got.offset &~ (bfd_vma) 1)); |
a85d7ed0 NC |
2416 | |
2417 | /* If this is a static link, or it is a -Bsymbolic link and the | |
2418 | symbol is defined locally or was forced to be local because | |
2419 | of a version file, we just want to emit a RELATIVE reloc. | |
2420 | The entry in the global offset table will already have been | |
2421 | initialized in the relocate_section function. */ | |
0451c93c MS |
2422 | if (info->shared |
2423 | && (info->symbolic | |
2424 | || h->dynindx == -1 | |
2425 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) | |
2426 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
2427 | { | |
2428 | BFD_ASSERT((h->got.offset & 1) != 0); | |
2429 | rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE); | |
2430 | rela.r_addend = (h->root.u.def.value | |
a85d7ed0 NC |
2431 | + h->root.u.def.section->output_section->vma |
2432 | + h->root.u.def.section->output_offset); | |
2433 | } | |
2434 | else | |
2435 | { | |
2436 | BFD_ASSERT((h->got.offset & 1) == 0); | |
0451c93c | 2437 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgot->contents + h->got.offset); |
a85d7ed0 NC |
2438 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT); |
2439 | rela.r_addend = 0; | |
2440 | } | |
2441 | ||
947216bf AM |
2442 | loc = htab->srelgot->contents; |
2443 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 2444 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
2445 | } |
2446 | ||
2447 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
2448 | { | |
a85d7ed0 | 2449 | Elf_Internal_Rela rela; |
947216bf | 2450 | bfd_byte *loc; |
a85d7ed0 NC |
2451 | |
2452 | /* This symbols needs a copy reloc. Set it up. */ | |
2453 | ||
0451c93c MS |
2454 | if (h->dynindx == -1 |
2455 | || (h->root.type != bfd_link_hash_defined | |
2456 | && h->root.type != bfd_link_hash_defweak) | |
2457 | || htab->srelbss == NULL) | |
2458 | abort (); | |
a85d7ed0 NC |
2459 | |
2460 | rela.r_offset = (h->root.u.def.value | |
2461 | + h->root.u.def.section->output_section->vma | |
2462 | + h->root.u.def.section->output_offset); | |
2463 | rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY); | |
2464 | rela.r_addend = 0; | |
947216bf AM |
2465 | loc = htab->srelbss->contents; |
2466 | loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rela); | |
0451c93c | 2467 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
a85d7ed0 NC |
2468 | } |
2469 | ||
2470 | /* Mark some specially defined symbols as absolute. */ | |
2471 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
2472 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
2473 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
2474 | sym->st_shndx = SHN_ABS; | |
2475 | ||
b34976b6 | 2476 | return TRUE; |
a85d7ed0 NC |
2477 | } |
2478 | ||
0451c93c MS |
2479 | /* Used to decide how to sort relocs in an optimal manner for the |
2480 | dynamic linker, before writing them out. */ | |
2481 | ||
2482 | static enum elf_reloc_type_class | |
2483 | elf_s390_reloc_type_class (rela) | |
2484 | const Elf_Internal_Rela *rela; | |
2485 | { | |
2486 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
2487 | { | |
2488 | case R_390_RELATIVE: | |
2489 | return reloc_class_relative; | |
2490 | case R_390_JMP_SLOT: | |
2491 | return reloc_class_plt; | |
2492 | case R_390_COPY: | |
2493 | return reloc_class_copy; | |
2494 | default: | |
2495 | return reloc_class_normal; | |
2496 | } | |
2497 | } | |
2498 | ||
a85d7ed0 NC |
2499 | /* Finish up the dynamic sections. */ |
2500 | ||
b34976b6 | 2501 | static bfd_boolean |
a85d7ed0 NC |
2502 | elf_s390_finish_dynamic_sections (output_bfd, info) |
2503 | bfd *output_bfd; | |
2504 | struct bfd_link_info *info; | |
2505 | { | |
0451c93c | 2506 | struct elf_s390_link_hash_table *htab; |
a85d7ed0 NC |
2507 | bfd *dynobj; |
2508 | asection *sdyn; | |
a85d7ed0 | 2509 | |
0451c93c MS |
2510 | htab = elf_s390_hash_table (info); |
2511 | dynobj = htab->elf.dynobj; | |
a85d7ed0 NC |
2512 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
2513 | ||
0451c93c | 2514 | if (htab->elf.dynamic_sections_created) |
a85d7ed0 | 2515 | { |
a85d7ed0 NC |
2516 | Elf32_External_Dyn *dyncon, *dynconend; |
2517 | ||
0451c93c MS |
2518 | if (sdyn == NULL || htab->sgot == NULL) |
2519 | abort (); | |
a85d7ed0 NC |
2520 | |
2521 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
2522 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
2523 | for (; dyncon < dynconend; dyncon++) | |
2524 | { | |
2525 | Elf_Internal_Dyn dyn; | |
a85d7ed0 | 2526 | asection *s; |
ec338859 | 2527 | |
a85d7ed0 | 2528 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
ec338859 | 2529 | |
a85d7ed0 NC |
2530 | switch (dyn.d_tag) |
2531 | { | |
2532 | default: | |
0451c93c | 2533 | continue; |
ec338859 | 2534 | |
a85d7ed0 | 2535 | case DT_PLTGOT: |
0451c93c MS |
2536 | dyn.d_un.d_ptr = htab->sgot->output_section->vma; |
2537 | break; | |
ec338859 | 2538 | |
a85d7ed0 | 2539 | case DT_JMPREL: |
0451c93c | 2540 | dyn.d_un.d_ptr = htab->srelplt->output_section->vma; |
a85d7ed0 NC |
2541 | break; |
2542 | ||
2543 | case DT_PLTRELSZ: | |
0451c93c | 2544 | s = htab->srelplt->output_section; |
a85d7ed0 NC |
2545 | if (s->_cooked_size != 0) |
2546 | dyn.d_un.d_val = s->_cooked_size; | |
2547 | else | |
2548 | dyn.d_un.d_val = s->_raw_size; | |
a85d7ed0 NC |
2549 | break; |
2550 | } | |
0451c93c MS |
2551 | |
2552 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
a85d7ed0 NC |
2553 | } |
2554 | ||
2555 | /* Fill in the special first entry in the procedure linkage table. */ | |
0451c93c | 2556 | if (htab->splt && htab->splt->_raw_size > 0) |
a85d7ed0 | 2557 | { |
0451c93c | 2558 | memset (htab->splt->contents, 0, PLT_FIRST_ENTRY_SIZE); |
a85d7ed0 | 2559 | if (info->shared) |
0451c93c | 2560 | { |
dc810e39 | 2561 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD0, |
0451c93c | 2562 | htab->splt->contents ); |
dc810e39 | 2563 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD1, |
0451c93c | 2564 | htab->splt->contents +4 ); |
dc810e39 | 2565 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD2, |
0451c93c | 2566 | htab->splt->contents +8 ); |
dc810e39 | 2567 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD3, |
0451c93c | 2568 | htab->splt->contents +12 ); |
dc810e39 | 2569 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_FIRST_ENTRY_WORD4, |
0451c93c | 2570 | htab->splt->contents +16 ); |
a85d7ed0 NC |
2571 | } |
2572 | else | |
2573 | { | |
0451c93c MS |
2574 | bfd_put_32 (output_bfd, (bfd_vma)PLT_FIRST_ENTRY_WORD0, |
2575 | htab->splt->contents ); | |
dc810e39 | 2576 | bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD1, |
0451c93c | 2577 | htab->splt->contents +4 ); |
dc810e39 | 2578 | bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD2, |
0451c93c | 2579 | htab->splt->contents +8 ); |
dc810e39 | 2580 | bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD3, |
0451c93c | 2581 | htab->splt->contents +12 ); |
dc810e39 | 2582 | bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD4, |
0451c93c | 2583 | htab->splt->contents +16 ); |
dc810e39 | 2584 | bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD5, |
0451c93c | 2585 | htab->splt->contents +20 ); |
a85d7ed0 | 2586 | bfd_put_32 (output_bfd, |
0451c93c MS |
2587 | htab->sgotplt->output_section->vma |
2588 | + htab->sgotplt->output_offset, | |
2589 | htab->splt->contents + 24); | |
a85d7ed0 | 2590 | } |
0451c93c MS |
2591 | elf_section_data (htab->splt->output_section) |
2592 | ->this_hdr.sh_entsize = 4; | |
a85d7ed0 NC |
2593 | } |
2594 | ||
2595 | } | |
2596 | ||
0451c93c | 2597 | if (htab->sgotplt) |
a85d7ed0 | 2598 | { |
0451c93c MS |
2599 | /* Fill in the first three entries in the global offset table. */ |
2600 | if (htab->sgotplt->_raw_size > 0) | |
2601 | { | |
2602 | bfd_put_32 (output_bfd, | |
2603 | (sdyn == NULL ? (bfd_vma) 0 | |
2604 | : sdyn->output_section->vma + sdyn->output_offset), | |
2605 | htab->sgotplt->contents); | |
2606 | /* One entry for shared object struct ptr. */ | |
2607 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4); | |
2608 | /* One entry for _dl_runtime_resolve. */ | |
2609 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8); | |
2610 | } | |
a85d7ed0 | 2611 | |
0451c93c MS |
2612 | elf_section_data (htab->sgotplt->output_section) |
2613 | ->this_hdr.sh_entsize = 4; | |
2614 | } | |
b34976b6 | 2615 | return TRUE; |
a85d7ed0 NC |
2616 | } |
2617 | ||
b34976b6 | 2618 | static bfd_boolean |
a85d7ed0 NC |
2619 | elf_s390_object_p (abfd) |
2620 | bfd *abfd; | |
2621 | { | |
befc3abb | 2622 | return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31); |
a85d7ed0 NC |
2623 | } |
2624 | ||
b34976b6 | 2625 | static bfd_boolean |
979f4a38 NC |
2626 | elf_s390_grok_prstatus (abfd, note) |
2627 | bfd * abfd; | |
2628 | Elf_Internal_Note * note; | |
2629 | { | |
2630 | int offset; | |
2631 | unsigned int raw_size; | |
2632 | ||
2633 | switch (note->descsz) | |
2634 | { | |
2635 | default: | |
b34976b6 | 2636 | return FALSE; |
979f4a38 NC |
2637 | |
2638 | case 224: /* S/390 Linux. */ | |
2639 | /* pr_cursig */ | |
2640 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2641 | ||
2642 | /* pr_pid */ | |
2643 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
2644 | ||
2645 | /* pr_reg */ | |
2646 | offset = 72; | |
2647 | raw_size = 144; | |
2648 | break; | |
2649 | } | |
2650 | ||
2651 | /* Make a ".reg/999" section. */ | |
2652 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
2653 | raw_size, note->descpos + offset); | |
2654 | } | |
2655 | ||
a85d7ed0 NC |
2656 | #define TARGET_BIG_SYM bfd_elf32_s390_vec |
2657 | #define TARGET_BIG_NAME "elf32-s390" | |
2658 | #define ELF_ARCH bfd_arch_s390 | |
2659 | #define ELF_MACHINE_CODE EM_S390 | |
2660 | #define ELF_MACHINE_ALT1 EM_S390_OLD | |
2661 | #define ELF_MAXPAGESIZE 0x1000 | |
2662 | ||
2663 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 2664 | #define elf_backend_can_refcount 1 |
a85d7ed0 NC |
2665 | #define elf_backend_want_got_plt 1 |
2666 | #define elf_backend_plt_readonly 1 | |
2667 | #define elf_backend_want_plt_sym 0 | |
2668 | #define elf_backend_got_header_size 12 | |
2669 | #define elf_backend_plt_header_size PLT_ENTRY_SIZE | |
b491616a | 2670 | #define elf_backend_rela_normal 1 |
a85d7ed0 NC |
2671 | |
2672 | #define elf_info_to_howto elf_s390_info_to_howto | |
2673 | ||
a85d7ed0 NC |
2674 | #define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name |
2675 | #define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create | |
2676 | #define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup | |
2677 | ||
2678 | #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol | |
2679 | #define elf_backend_check_relocs elf_s390_check_relocs | |
0451c93c MS |
2680 | #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol |
2681 | #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections | |
a85d7ed0 NC |
2682 | #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections |
2683 | #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol | |
2684 | #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook | |
2685 | #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook | |
0451c93c | 2686 | #define elf_backend_reloc_type_class elf_s390_reloc_type_class |
a85d7ed0 NC |
2687 | #define elf_backend_relocate_section elf_s390_relocate_section |
2688 | #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections | |
29c2fb7c | 2689 | #define elf_backend_reloc_type_class elf_s390_reloc_type_class |
979f4a38 | 2690 | #define elf_backend_grok_prstatus elf_s390_grok_prstatus |
a85d7ed0 NC |
2691 | |
2692 | #define elf_backend_object_p elf_s390_object_p | |
2693 | ||
2694 | #include "elf32-target.h" |