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4c85cbfa | 1 | /* BFD back-end for HP PA-RISC ELF files. |
f4bd7a8f | 2 | Copyright (C) 1990, 91, 92, 93, 94 Free Software Foundation, Inc. |
4c85cbfa KR |
3 | |
4 | Written by | |
e8f2240a | 5 | |
4c85cbfa KR |
6 | Center for Software Science |
7 | Department of Computer Science | |
8 | University of Utah | |
9 | ||
10 | This file is part of BFD, the Binary File Descriptor library. | |
11 | ||
12 | This program is free software; you can redistribute it and/or modify | |
13 | it under the terms of the GNU General Public License as published by | |
14 | the Free Software Foundation; either version 2 of the License, or | |
15 | (at your option) any later version. | |
16 | ||
17 | This program is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
23 | along with this program; if not, write to the Free Software | |
24 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
25 | ||
26 | #include "bfd.h" | |
27 | #include "sysdep.h" | |
24f13b03 | 28 | #include "bfdlink.h" |
4c85cbfa KR |
29 | #include "libbfd.h" |
30 | #include "obstack.h" | |
31 | #include "libelf.h" | |
32 | ||
4c85cbfa | 33 | |
24f13b03 ILT |
34 | /* HPPA symbol table extension entry types */ |
35 | enum elf32_hppa_symextn_types | |
36 | { | |
37 | PARISC_SXT_NULL, | |
38 | PARISC_SXT_SYMNDX, | |
39 | PARISC_SXT_ARG_RELOC, | |
40 | }; | |
4c85cbfa | 41 | |
24f13b03 | 42 | /* These macros compose and decompose the value of a symextn entry: |
4c85cbfa | 43 | |
24f13b03 ILT |
44 | entry_type = ELF32_PARISC_SX_TYPE(word); |
45 | entry_value = ELF32_PARISC_SX_VAL(word); | |
46 | word = ELF32_PARISC_SX_WORD(type,val); */ | |
47 | ||
48 | #define ELF32_PARISC_SX_TYPE(p) ((p) >> 24) | |
49 | #define ELF32_PARISC_SX_VAL(p) ((p) & 0xFFFFFF) | |
50 | #define ELF32_PARISC_SX_WORD(type,val) (((type) << 24) + (val & 0xFFFFFF)) | |
51 | ||
52 | /* The following was added facilitate implementation of the .hppa_symextn | |
53 | section. This section is built after the symbol table is built in the | |
54 | elf_write_object_contents routine (called from bfd_close). It is built | |
55 | so late because it requires information that is not known until | |
56 | the symbol and string table sections have been allocated, and | |
57 | the symbol table has been built. */ | |
58 | ||
59 | #define SYMEXTN_SECTION_NAME ".PARISC.symext" | |
60 | ||
61 | /* FIXME. Are these external? (For example used by GAS?). If so the | |
62 | names need to change to avoid namespace pollution, if not they should | |
63 | be moved into elf32-hppa.c. */ | |
64 | typedef unsigned long symext_entryS; | |
65 | struct symext_chain | |
66 | { | |
67 | symext_entryS entry; | |
68 | struct symext_chain *next; | |
69 | }; | |
70 | ||
71 | typedef struct symext_chain symext_chainS; | |
72 | ||
73 | /* We use three different hash tables to hold information for | |
74 | linking PA ELF objects. | |
75 | ||
76 | The first is the elf32_hppa_link_hash_table which is derived | |
77 | from the standard ELF linker hash table. We use this as a place to | |
78 | attach other hash tables and static information. | |
79 | ||
80 | The second is the stub hash table which is derived from the | |
81 | base BFD hash table. The stub hash table holds the information | |
82 | necessary to build the linker stubs during a link. | |
83 | ||
84 | The last hash table keeps track of argument location information needed | |
85 | to build hash tables. Each function with nonzero argument location | |
86 | bits will have an entry in this table. */ | |
87 | ||
88 | /* Hash table for linker stubs. */ | |
89 | ||
90 | struct elf32_hppa_stub_hash_entry | |
91 | { | |
92 | /* Base hash table entry structure, we can get the name of the stub | |
93 | (and thus know exactly what actions it performs) from the base | |
94 | hash table entry. */ | |
95 | struct bfd_hash_entry root; | |
96 | ||
97 | /* Offset of the beginning of this stub. */ | |
98 | bfd_vma offset; | |
99 | ||
100 | /* Given the symbol's value and its section we can determine its final | |
101 | value when building the stubs (so the stub knows where to jump. */ | |
102 | symvalue target_value; | |
103 | asection *target_section; | |
104 | }; | |
105 | ||
106 | struct elf32_hppa_stub_hash_table | |
107 | { | |
108 | /* The hash table itself. */ | |
109 | struct bfd_hash_table root; | |
110 | ||
111 | /* The stub BFD. */ | |
112 | bfd *stub_bfd; | |
113 | ||
114 | /* Where to place the next stub. */ | |
115 | bfd_byte *location; | |
116 | ||
117 | /* Current offset in the stub section. */ | |
118 | unsigned int offset; | |
119 | ||
120 | }; | |
121 | ||
122 | /* Hash table for argument location information. */ | |
123 | ||
124 | struct elf32_hppa_args_hash_entry | |
e08b9ad7 | 125 | { |
24f13b03 ILT |
126 | /* Base hash table entry structure. */ |
127 | struct bfd_hash_entry root; | |
128 | ||
129 | /* The argument location bits for this entry. */ | |
130 | int arg_bits; | |
131 | }; | |
e08b9ad7 | 132 | |
24f13b03 ILT |
133 | struct elf32_hppa_args_hash_table |
134 | { | |
135 | /* The hash table itself. */ | |
136 | struct bfd_hash_table root; | |
137 | }; | |
e08b9ad7 | 138 | |
24f13b03 | 139 | struct elf32_hppa_link_hash_entry |
e08b9ad7 | 140 | { |
24f13b03 ILT |
141 | struct elf_link_hash_entry root; |
142 | }; | |
143 | ||
144 | struct elf32_hppa_link_hash_table | |
e08b9ad7 | 145 | { |
24f13b03 ILT |
146 | /* The main hash table. */ |
147 | struct elf_link_hash_table root; | |
148 | ||
149 | /* The stub hash table. */ | |
150 | struct elf32_hppa_stub_hash_table *stub_hash_table; | |
151 | ||
152 | /* The argument relocation bits hash table. */ | |
153 | struct elf32_hppa_args_hash_table *args_hash_table; | |
154 | ||
155 | /* A count of the number of output symbols. */ | |
156 | unsigned int output_symbol_count; | |
157 | ||
158 | /* Stuff so we can handle DP relative relocations. */ | |
159 | long global_value; | |
160 | int global_sym_defined; | |
161 | }; | |
162 | ||
163 | typedef unsigned int symextn_entry; | |
e08b9ad7 JL |
164 | |
165 | /* FIXME. */ | |
166 | #define ARGUMENTS 0 | |
167 | #define RETURN_VALUE 1 | |
168 | ||
24f13b03 | 169 | /* The various argument relocations that may be performed. */ |
e08b9ad7 JL |
170 | typedef enum |
171 | { | |
172 | /* No relocation. */ | |
24f13b03 ILT |
173 | NO, |
174 | /* Relocate 32 bits from GR to FP register. */ | |
175 | GF, | |
176 | /* Relocate 64 bits from a GR pair to FP pair. */ | |
177 | GD, | |
178 | /* Relocate 32 bits from FP to GR. */ | |
179 | FG, | |
180 | /* Relocate 64 bits from FP pair to GR pair. */ | |
181 | DG, | |
e08b9ad7 JL |
182 | } arg_reloc_type; |
183 | ||
e08b9ad7 JL |
184 | /* What is being relocated (eg which argument or the return value). */ |
185 | typedef enum | |
186 | { | |
24f13b03 | 187 | ARG0, ARG1, ARG2, ARG3, RET, |
e08b9ad7 JL |
188 | } arg_reloc_location; |
189 | ||
e08b9ad7 | 190 | |
24f13b03 | 191 | /* ELF32/HPPA relocation support |
e08b9ad7 | 192 | |
24f13b03 ILT |
193 | This file contains ELF32/HPPA relocation support as specified |
194 | in the Stratus FTX/Golf Object File Format (SED-1762) dated | |
195 | February 1994. */ | |
196 | ||
197 | #include "elf32-hppa.h" | |
198 | #include "hppa_stubs.h" | |
4c85cbfa | 199 | |
4991ebb9 ILT |
200 | static bfd_reloc_status_type hppa_elf_reloc |
201 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
4c85cbfa | 202 | |
24f13b03 | 203 | static unsigned long hppa_elf_relocate_insn |
f5bfdacd JL |
204 | PARAMS ((bfd *, asection *, unsigned long, unsigned long, long, |
205 | long, unsigned long, unsigned long, unsigned long)); | |
206 | ||
f5bfdacd JL |
207 | static bfd_reloc_status_type hppa_elf_reloc |
208 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd*, char **)); | |
209 | ||
210 | static CONST reloc_howto_type * elf_hppa_reloc_type_lookup | |
7ed5e970 | 211 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
f5bfdacd | 212 | |
24f13b03 ILT |
213 | static boolean elf32_hppa_set_section_contents |
214 | PARAMS ((bfd *, sec_ptr, PTR, file_ptr, bfd_size_type)); | |
e08b9ad7 | 215 | |
24f13b03 ILT |
216 | static void elf_info_to_howto |
217 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); | |
e08b9ad7 | 218 | |
24f13b03 ILT |
219 | static boolean elf32_hppa_backend_symbol_table_processing |
220 | PARAMS ((bfd *, elf_symbol_type *, int)); | |
e08b9ad7 | 221 | |
24f13b03 ILT |
222 | static void elf32_hppa_backend_begin_write_processing |
223 | PARAMS ((bfd *, struct bfd_link_info *)); | |
e08b9ad7 | 224 | |
24f13b03 ILT |
225 | static void elf32_hppa_backend_final_write_processing |
226 | PARAMS ((bfd *, boolean)); | |
e08b9ad7 | 227 | |
24f13b03 ILT |
228 | static void add_entry_to_symext_chain |
229 | PARAMS ((bfd *, unsigned int, unsigned int, symext_chainS **, | |
230 | symext_chainS **)); | |
e08b9ad7 | 231 | |
24f13b03 ILT |
232 | static void |
233 | elf_hppa_tc_make_sections PARAMS ((bfd *, symext_chainS *)); | |
e08b9ad7 | 234 | |
24f13b03 | 235 | static boolean hppa_elf_is_local_label PARAMS ((bfd *, asymbol *)); |
e08b9ad7 | 236 | |
24f13b03 ILT |
237 | static boolean elf32_hppa_add_symbol_hook |
238 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, | |
239 | const char **, flagword *, asection **, bfd_vma *)); | |
e08b9ad7 | 240 | |
24f13b03 ILT |
241 | static bfd_reloc_status_type elf32_hppa_bfd_final_link_relocate |
242 | PARAMS ((const reloc_howto_type *, bfd *, bfd *, asection *, | |
243 | bfd_byte *, bfd_vma, bfd_vma, bfd_vma, struct bfd_link_info *, | |
244 | asection *, const char *, int)); | |
e08b9ad7 | 245 | |
24f13b03 ILT |
246 | static struct bfd_link_hash_table *elf32_hppa_link_hash_table_create |
247 | PARAMS ((bfd *)); | |
e08b9ad7 | 248 | |
24f13b03 ILT |
249 | static struct bfd_hash_entry * |
250 | elf32_hppa_stub_hash_newfunc | |
251 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
e08b9ad7 | 252 | |
24f13b03 ILT |
253 | static struct bfd_hash_entry * |
254 | elf32_hppa_args_hash_newfunc | |
255 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
e08b9ad7 | 256 | |
24f13b03 ILT |
257 | static boolean |
258 | elf32_hppa_relocate_section | |
259 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, | |
eb4267a3 | 260 | bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
e08b9ad7 | 261 | |
24f13b03 ILT |
262 | static boolean |
263 | elf32_hppa_stub_hash_table_init | |
264 | PARAMS ((struct elf32_hppa_stub_hash_table *, bfd *, | |
265 | struct bfd_hash_entry *(*) PARAMS ((struct bfd_hash_entry *, | |
266 | struct bfd_hash_table *, | |
267 | const char *)))); | |
e08b9ad7 | 268 | |
24f13b03 ILT |
269 | static boolean |
270 | elf32_hppa_build_one_stub PARAMS ((struct bfd_hash_entry *, PTR)); | |
e08b9ad7 | 271 | |
24f13b03 ILT |
272 | static boolean |
273 | elf32_hppa_read_symext_info | |
274 | PARAMS ((bfd *, Elf_Internal_Shdr *, struct elf32_hppa_args_hash_table *, | |
275 | Elf_Internal_Sym *, boolean, boolean)); | |
e08b9ad7 | 276 | |
24f13b03 ILT |
277 | static unsigned int elf32_hppa_size_of_stub |
278 | PARAMS ((unsigned int, unsigned int, bfd_vma, bfd_vma, const char *)); | |
459ae909 | 279 | |
24f13b03 ILT |
280 | static boolean elf32_hppa_arg_reloc_needed |
281 | PARAMS ((unsigned int, unsigned int, arg_reloc_type [])); | |
459ae909 | 282 | |
24f13b03 ILT |
283 | static void elf32_hppa_name_of_stub |
284 | PARAMS ((unsigned int, unsigned int, bfd_vma, bfd_vma, char *)); | |
459ae909 | 285 | |
24f13b03 | 286 | static boolean elf32_hppa_size_symext PARAMS ((struct bfd_hash_entry *, PTR)); |
459ae909 | 287 | |
24f13b03 ILT |
288 | static boolean elf32_hppa_link_output_symbol_hook |
289 | PARAMS ((bfd *, struct bfd_link_info *, const char *, | |
290 | Elf_Internal_Sym *, asection *)); | |
25057836 | 291 | |
e08b9ad7 JL |
292 | /* ELF/PA relocation howto entries. */ |
293 | ||
d9ad93bc | 294 | static reloc_howto_type elf_hppa_howto_table[ELF_HOWTO_TABLE_SIZE] = |
4c85cbfa | 295 | { |
459ae909 JL |
296 | {R_PARISC_NONE, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_NONE"}, |
297 | {R_PARISC_DIR32, 0, 0, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DIR32"}, | |
298 | {R_PARISC_DIR21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DIR21L"}, | |
299 | {R_PARISC_DIR17R, 0, 0, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DIR17R"}, | |
300 | {R_PARISC_DIR17F, 0, 0, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DIR17F"}, | |
301 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
302 | {R_PARISC_DIR14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DIR14R"}, | |
303 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
304 | ||
305 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
306 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
307 | {R_PARISC_PCREL21L, 0, 0, 21, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL21L"}, | |
308 | {R_PARISC_PCREL17R, 0, 0, 17, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL17R"}, | |
309 | {R_PARISC_PCREL17F, 0, 0, 17, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL17F"}, | |
310 | {R_PARISC_PCREL17C, 0, 0, 17, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL17C"}, | |
311 | {R_PARISC_PCREL14R, 0, 0, 14, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL14R"}, | |
312 | {R_PARISC_PCREL14F, 0, 0, 14, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL14F"}, | |
313 | ||
314 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
315 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
316 | {R_PARISC_DPREL21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DPREL21L"}, | |
317 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
318 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
319 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
320 | {R_PARISC_DPREL14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DPREL14R"}, | |
321 | {R_PARISC_DPREL14F, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DPREL14F"}, | |
322 | ||
323 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
324 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
325 | {R_PARISC_DLTREL21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTREL21L"}, | |
326 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
327 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
328 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
329 | {R_PARISC_DLTREL14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTREL14R"}, | |
330 | {R_PARISC_DLTREL14F, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTREL14F"}, | |
331 | ||
332 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
333 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
334 | {R_PARISC_DLTIND21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTIND21L"}, | |
335 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
336 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
337 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
338 | {R_PARISC_DLTIND14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTIND14R"}, | |
339 | {R_PARISC_DLTIND14F, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTIND14F"}, | |
340 | ||
341 | {R_PARISC_SETBASE, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_SETBASE"}, | |
342 | {R_PARISC_BASEREL32, 0, 0, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL32"}, | |
343 | {R_PARISC_BASEREL21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL21L"}, | |
344 | {R_PARISC_BASEREL17R, 0, 0, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL17R"}, | |
345 | {R_PARISC_BASEREL17F, 0, 0, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL17F"}, | |
346 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
347 | {R_PARISC_BASEREL14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL14R"}, | |
348 | {R_PARISC_BASEREL14F, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL14F"}, | |
349 | ||
350 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
351 | {R_PARISC_TEXTREL32, 0, 0, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_TEXTREL32"}, | |
352 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
353 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
354 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
355 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
356 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
357 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
358 | ||
359 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
360 | {R_PARISC_DATAREL32, 0, 0, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
361 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
362 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
363 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
364 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
365 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
366 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
367 | ||
368 | ||
369 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
370 | {R_PARISC_PLABEL32, 0, 0, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLABEL32"}, | |
371 | {R_PARISC_PLABEL21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLABEL21L"}, | |
372 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
373 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
374 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
375 | {R_PARISC_PLABEL14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLABEL14R"}, | |
376 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
377 | ||
378 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
379 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
380 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
381 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
382 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
383 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
384 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
385 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
386 | ||
387 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
388 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
389 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
390 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
391 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
392 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
393 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
394 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
395 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
396 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
397 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
398 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
399 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
400 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
401 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
402 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
403 | ||
404 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
405 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
406 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
407 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
408 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
409 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
410 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
411 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
412 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
413 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
414 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
415 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
416 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
417 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
418 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
419 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
420 | ||
421 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
422 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
423 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
424 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
425 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
426 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
427 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
428 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
429 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
430 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
431 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
432 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
433 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
434 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
435 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
436 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
437 | ||
438 | ||
439 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
440 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
441 | {R_PARISC_PLTIND21L, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLTIND21L"}, | |
442 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
443 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
444 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, | |
445 | {R_PARISC_PLTIND14R, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLTIND14R"}, | |
446 | {R_PARISC_PLTIND14F, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLTIND14F"}, | |
447 | ||
448 | ||
449 | {R_PARISC_COPY, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_COPY"}, | |
450 | {R_PARISC_GLOB_DAT, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_GLOB_DAT"}, | |
451 | {R_PARISC_JMP_SLOT, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_JMP_SLOT"}, | |
452 | {R_PARISC_RELATIVE, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_RELATIVE"}, | |
459ae909 JL |
453 | |
454 | {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_dont, NULL, "R_PARISC_UNIMPLEMENTED"}, | |
e8f2240a | 455 | }; |
4c85cbfa | 456 | |
24f13b03 ILT |
457 | /* Where (what register type) is an argument comming from? */ |
458 | typedef enum | |
459 | { | |
460 | AR_NO, | |
461 | AR_GR, | |
462 | AR_FR, | |
463 | AR_FU, | |
464 | AR_FPDBL1, | |
465 | AR_FPDBL2, | |
466 | } arg_location; | |
467 | ||
468 | /* Horizontal represents the callee's argument location information, | |
469 | vertical represents caller's argument location information. Value at a | |
470 | particular X,Y location represents what (if any) argument relocation | |
471 | needs to be performed to make caller and callee agree. */ | |
472 | ||
473 | static CONST arg_reloc_type arg_mismatches[6][6] = | |
474 | { | |
475 | {NO, NO, NO, NO, NO, NO}, | |
476 | {NO, NO, GF, NO, GD, NO}, | |
477 | {NO, FG, NO, NO, NO, NO}, | |
478 | {NO, NO, NO, NO, NO, NO}, | |
479 | {NO, DG, NO, NO, NO, NO}, | |
480 | {NO, DG, NO, NO, NO, NO}, | |
481 | }; | |
482 | ||
483 | /* Likewise, but reversed for the return value. */ | |
484 | static CONST arg_reloc_type ret_mismatches[6][6] = | |
485 | { | |
486 | {NO, NO, NO, NO, NO, NO}, | |
487 | {NO, NO, FG, NO, DG, NO}, | |
488 | {NO, GF, NO, NO, NO, NO}, | |
489 | {NO, NO, NO, NO, NO, NO}, | |
490 | {NO, GD, NO, NO, NO, NO}, | |
491 | {NO, GD, NO, NO, NO, NO}, | |
492 | }; | |
493 | ||
494 | /* Misc static crud for symbol extension records. */ | |
d9ad93bc KR |
495 | static symext_chainS *symext_rootP; |
496 | static symext_chainS *symext_lastP; | |
459ae909 | 497 | static int symext_chain_size; |
24f13b03 ILT |
498 | |
499 | /* FIXME: We should be able to try this static variable! */ | |
f5bfdacd | 500 | static symext_entryS *symextn_contents; |
e08b9ad7 | 501 | |
24f13b03 ILT |
502 | |
503 | /* For linker stub hash tables. */ | |
504 | #define elf32_hppa_stub_hash_lookup(table, string, create, copy) \ | |
505 | ((struct elf32_hppa_stub_hash_entry *) \ | |
506 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) | |
507 | ||
508 | #define elf32_hppa_stub_hash_traverse(table, func, info) \ | |
509 | (bfd_hash_traverse \ | |
510 | (&(table)->root, \ | |
511 | (boolean (*) PARAMS ((struct bfd_hash_entry *, PTR))) (func), \ | |
512 | (info))) | |
513 | ||
514 | /* For linker args hash tables. */ | |
515 | #define elf32_hppa_args_hash_lookup(table, string, create, copy) \ | |
516 | ((struct elf32_hppa_args_hash_entry *) \ | |
517 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) | |
518 | ||
519 | #define elf32_hppa_args_hash_traverse(table, func, info) \ | |
520 | (bfd_hash_traverse \ | |
521 | (&(table)->root, \ | |
522 | (boolean (*) PARAMS ((struct bfd_hash_entry *, PTR))) (func), \ | |
523 | (info))) | |
524 | ||
525 | #define elf32_hppa_args_hash_table_init(table, newfunc) \ | |
526 | (bfd_hash_table_init \ | |
527 | (&(table)->root, \ | |
528 | (struct bfd_hash_entry *(*) PARAMS ((struct bfd_hash_entry *, \ | |
529 | struct bfd_hash_table *, \ | |
530 | const char *))) (newfunc))) | |
531 | ||
532 | /* For HPPA linker hash table. */ | |
533 | ||
534 | #define elf32_hppa_link_hash_lookup(table, string, create, copy, follow)\ | |
535 | ((struct elf32_hppa_link_hash_entry *) \ | |
536 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
537 | (copy), (follow))) | |
538 | ||
539 | #define elf32_hppa_link_hash_traverse(table, func, info) \ | |
540 | (elf_link_hash_traverse \ | |
541 | (&(table)->root, \ | |
542 | (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ | |
543 | (info))) | |
544 | ||
545 | /* Get the PA ELF linker hash table from a link_info structure. */ | |
546 | ||
547 | #define elf32_hppa_hash_table(p) \ | |
548 | ((struct elf32_hppa_link_hash_table *) ((p)->hash)) | |
549 | ||
550 | ||
551 | /* Extract specific argument location bits for WHICH from | |
552 | the full argument location in AR. */ | |
553 | #define EXTRACT_ARBITS(ar, which) ((ar) >> (8 - ((which) * 2))) & 3 | |
554 | ||
555 | /* Assorted hash table functions. */ | |
556 | ||
557 | /* Initialize an entry in the stub hash table. */ | |
558 | ||
559 | static struct bfd_hash_entry * | |
560 | elf32_hppa_stub_hash_newfunc (entry, table, string) | |
561 | struct bfd_hash_entry *entry; | |
562 | struct bfd_hash_table *table; | |
563 | const char *string; | |
564 | { | |
565 | struct elf32_hppa_stub_hash_entry *ret; | |
566 | ||
567 | ret = (struct elf32_hppa_stub_hash_entry *) entry; | |
568 | ||
569 | /* Allocate the structure if it has not already been allocated by a | |
570 | subclass. */ | |
571 | if (ret == NULL) | |
572 | ret = ((struct elf32_hppa_stub_hash_entry *) | |
573 | bfd_hash_allocate (table, | |
574 | sizeof (struct elf32_hppa_stub_hash_entry))); | |
575 | if (ret == NULL) | |
576 | { | |
577 | bfd_set_error (bfd_error_no_memory); | |
578 | return NULL; | |
579 | } | |
580 | ||
581 | /* Call the allocation method of the superclass. */ | |
582 | ret = ((struct elf32_hppa_stub_hash_entry *) | |
583 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
584 | ||
585 | if (ret) | |
586 | { | |
587 | /* Initialize the local fields. */ | |
588 | ret->offset = 0; | |
589 | ret->target_value = 0; | |
590 | ret->target_section = NULL; | |
591 | } | |
592 | ||
593 | return (struct bfd_hash_entry *) ret; | |
594 | } | |
595 | ||
596 | /* Initialize a stub hash table. */ | |
597 | ||
598 | static boolean | |
599 | elf32_hppa_stub_hash_table_init (table, stub_bfd, newfunc) | |
600 | struct elf32_hppa_stub_hash_table *table; | |
601 | bfd *stub_bfd; | |
602 | struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *, | |
603 | struct bfd_hash_table *, | |
604 | const char *)); | |
605 | { | |
606 | table->offset = 0; | |
607 | table->location = 0; | |
608 | table->stub_bfd = stub_bfd; | |
609 | return (bfd_hash_table_init (&table->root, newfunc)); | |
610 | } | |
611 | ||
612 | /* Initialize an entry in the argument location hash table. */ | |
613 | ||
614 | static struct bfd_hash_entry * | |
615 | elf32_hppa_args_hash_newfunc (entry, table, string) | |
616 | struct bfd_hash_entry *entry; | |
617 | struct bfd_hash_table *table; | |
618 | const char *string; | |
619 | { | |
620 | struct elf32_hppa_args_hash_entry *ret; | |
621 | ||
622 | ret = (struct elf32_hppa_args_hash_entry *) entry; | |
623 | ||
624 | /* Allocate the structure if it has not already been allocated by a | |
625 | subclass. */ | |
626 | if (ret == NULL) | |
627 | ret = ((struct elf32_hppa_args_hash_entry *) | |
628 | bfd_hash_allocate (table, | |
629 | sizeof (struct elf32_hppa_args_hash_entry))); | |
630 | if (ret == NULL) | |
631 | { | |
632 | bfd_set_error (bfd_error_no_memory); | |
633 | return NULL; | |
634 | } | |
635 | ||
636 | /* Call the allocation method of the superclass. */ | |
637 | ret = ((struct elf32_hppa_args_hash_entry *) | |
638 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
639 | ||
640 | /* Initialize the local fields. */ | |
641 | if (ret) | |
642 | ret->arg_bits = 0; | |
643 | ||
644 | return (struct bfd_hash_entry *) ret; | |
645 | } | |
646 | ||
647 | /* Create the derived linker hash table. The PA ELF port uses the derived | |
648 | hash table to keep information specific to the PA ELF linker (without | |
649 | using static variables). */ | |
650 | ||
651 | static struct bfd_link_hash_table * | |
652 | elf32_hppa_link_hash_table_create (abfd) | |
653 | bfd *abfd; | |
654 | { | |
655 | struct elf32_hppa_link_hash_table *ret; | |
656 | ||
657 | ret = ((struct elf32_hppa_link_hash_table *) | |
658 | bfd_alloc (abfd, sizeof (struct elf32_hppa_link_hash_table))); | |
659 | if (ret == NULL) | |
660 | { | |
661 | bfd_set_error (bfd_error_no_memory); | |
662 | return NULL; | |
663 | } | |
664 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
665 | _bfd_elf_link_hash_newfunc)) | |
666 | { | |
667 | bfd_release (abfd, ret); | |
668 | return NULL; | |
669 | } | |
670 | ret->stub_hash_table = NULL; | |
671 | ret->args_hash_table = NULL; | |
672 | ret->output_symbol_count = 0; | |
673 | ret->global_value = 0; | |
674 | ret->global_sym_defined = 0; | |
675 | ||
676 | return &ret->root.root; | |
677 | } | |
e8f2240a | 678 | |
f5bfdacd | 679 | /* Relocate the given INSN given the various input parameters. |
e8f2240a | 680 | |
f5bfdacd | 681 | FIXME: endianness and sizeof (long) issues abound here. */ |
4c85cbfa KR |
682 | |
683 | static unsigned long | |
f5bfdacd JL |
684 | hppa_elf_relocate_insn (abfd, input_sect, insn, address, sym_value, |
685 | r_addend, r_format, r_field, pcrel) | |
f4bd7a8f DM |
686 | bfd *abfd; |
687 | asection *input_sect; | |
688 | unsigned long insn; | |
689 | unsigned long address; | |
f4bd7a8f DM |
690 | long sym_value; |
691 | long r_addend; | |
f5bfdacd JL |
692 | unsigned long r_format; |
693 | unsigned long r_field; | |
694 | unsigned long pcrel; | |
4c85cbfa | 695 | { |
e8f2240a KR |
696 | unsigned char opcode = get_opcode (insn); |
697 | long constant_value; | |
e8f2240a KR |
698 | |
699 | switch (opcode) | |
700 | { | |
701 | case LDO: | |
702 | case LDB: | |
703 | case LDH: | |
704 | case LDW: | |
705 | case LDWM: | |
706 | case STB: | |
707 | case STH: | |
708 | case STW: | |
709 | case STWM: | |
f5bfdacd JL |
710 | case COMICLR: |
711 | case SUBI: | |
712 | case ADDIT: | |
713 | case ADDI: | |
714 | case LDIL: | |
715 | case ADDIL: | |
7218bb04 | 716 | constant_value = HPPA_R_CONSTANT (r_addend); |
e8f2240a KR |
717 | |
718 | if (pcrel) | |
719 | sym_value -= address; | |
e8f2240a | 720 | |
e8f2240a | 721 | sym_value = hppa_field_adjust (sym_value, constant_value, r_field); |
f5bfdacd | 722 | return hppa_rebuild_insn (abfd, insn, sym_value, r_format); |
e8f2240a KR |
723 | |
724 | case BL: | |
725 | case BE: | |
726 | case BLE: | |
e8f2240a KR |
727 | /* XXX computing constant_value is not needed??? */ |
728 | constant_value = assemble_17 ((insn & 0x001f0000) >> 16, | |
729 | (insn & 0x00001ffc) >> 2, | |
730 | insn & 1); | |
f5bfdacd | 731 | |
e8f2240a KR |
732 | constant_value = (constant_value << 15) >> 15; |
733 | if (pcrel) | |
734 | { | |
735 | sym_value -= | |
736 | address + input_sect->output_offset | |
737 | + input_sect->output_section->vma; | |
738 | sym_value = hppa_field_adjust (sym_value, -8, r_field); | |
739 | } | |
740 | else | |
741 | sym_value = hppa_field_adjust (sym_value, constant_value, r_field); | |
4c85cbfa | 742 | |
f5bfdacd | 743 | return hppa_rebuild_insn (abfd, insn, sym_value >> 2, r_format); |
4c85cbfa | 744 | |
e8f2240a KR |
745 | default: |
746 | if (opcode == 0) | |
747 | { | |
7218bb04 | 748 | constant_value = HPPA_R_CONSTANT (r_addend); |
e8f2240a | 749 | |
f5bfdacd JL |
750 | if (pcrel) |
751 | sym_value -= address; | |
752 | ||
e8f2240a KR |
753 | return hppa_field_adjust (sym_value, constant_value, r_field); |
754 | } | |
755 | else | |
f5bfdacd | 756 | abort (); |
e8f2240a | 757 | } |
4c85cbfa KR |
758 | } |
759 | ||
24f13b03 | 760 | /* Relocate an HPPA ELF section. */ |
f5bfdacd | 761 | |
24f13b03 ILT |
762 | static boolean |
763 | elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section, | |
eb4267a3 | 764 | contents, relocs, local_syms, local_sections) |
24f13b03 ILT |
765 | bfd *output_bfd; |
766 | struct bfd_link_info *info; | |
767 | bfd *input_bfd; | |
768 | asection *input_section; | |
769 | bfd_byte *contents; | |
770 | Elf_Internal_Rela *relocs; | |
771 | Elf_Internal_Sym *local_syms; | |
772 | asection **local_sections; | |
e8f2240a | 773 | { |
24f13b03 ILT |
774 | Elf_Internal_Shdr *symtab_hdr; |
775 | Elf_Internal_Rela *rel; | |
776 | Elf_Internal_Rela *relend; | |
777 | ||
778 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
779 | ||
780 | rel = relocs; | |
781 | relend = relocs + input_section->reloc_count; | |
782 | for (; rel < relend; rel++) | |
783 | { | |
784 | int r_type; | |
785 | const reloc_howto_type *howto; | |
786 | long r_symndx; | |
787 | struct elf_link_hash_entry *h; | |
788 | Elf_Internal_Sym *sym; | |
789 | asection *sym_sec; | |
790 | bfd_vma relocation; | |
791 | bfd_reloc_status_type r; | |
792 | const char *sym_name; | |
793 | ||
794 | r_type = ELF32_R_TYPE (rel->r_info); | |
795 | if (r_type < 0 || r_type >= (int) R_PARISC_UNIMPLEMENTED) | |
796 | { | |
797 | bfd_set_error (bfd_error_bad_value); | |
798 | return false; | |
799 | } | |
800 | howto = elf_hppa_howto_table + r_type; | |
801 | ||
802 | r_symndx = ELF32_R_SYM (rel->r_info); | |
803 | ||
804 | if (info->relocateable) | |
805 | { | |
806 | /* This is a relocateable link. We don't have to change | |
807 | anything, unless the reloc is against a section symbol, | |
808 | in which case we have to adjust according to where the | |
809 | section symbol winds up in the output section. */ | |
810 | if (r_symndx < symtab_hdr->sh_info) | |
811 | { | |
812 | sym = local_syms + r_symndx; | |
813 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
814 | { | |
815 | sym_sec = local_sections[r_symndx]; | |
816 | rel->r_addend += sym_sec->output_offset; | |
817 | } | |
818 | } | |
819 | ||
820 | continue; | |
821 | } | |
822 | ||
823 | /* This is a final link. */ | |
824 | h = NULL; | |
825 | sym = NULL; | |
826 | sym_sec = NULL; | |
827 | if (r_symndx < symtab_hdr->sh_info) | |
828 | { | |
829 | sym = local_syms + r_symndx; | |
830 | sym_sec = local_sections[r_symndx]; | |
831 | relocation = ((ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
832 | ? 0 : sym->st_value) | |
833 | + sym_sec->output_offset | |
834 | + sym_sec->output_section->vma); | |
835 | } | |
836 | else | |
837 | { | |
838 | long indx; | |
839 | ||
840 | indx = r_symndx - symtab_hdr->sh_info; | |
841 | h = elf_sym_hashes (input_bfd)[indx]; | |
842 | if (h->root.type == bfd_link_hash_defined) | |
843 | { | |
844 | sym_sec = h->root.u.def.section; | |
845 | relocation = (h->root.u.def.value | |
846 | + sym_sec->output_offset | |
847 | + sym_sec->output_section->vma); | |
848 | } | |
849 | else if (h->root.type == bfd_link_hash_weak) | |
850 | relocation = 0; | |
851 | else | |
852 | { | |
853 | if (!((*info->callbacks->undefined_symbol) | |
854 | (info, h->root.root.string, input_bfd, | |
855 | input_section, rel->r_offset))) | |
856 | return false; | |
857 | relocation = 0; | |
858 | } | |
859 | } | |
860 | ||
861 | if (h != NULL) | |
862 | sym_name = h->root.root.string; | |
863 | else | |
864 | { | |
eb4267a3 ILT |
865 | sym_name = elf_string_from_elf_section (input_bfd, |
866 | symtab_hdr->sh_link, | |
867 | sym->st_name); | |
24f13b03 ILT |
868 | if (sym_name == NULL) |
869 | return false; | |
870 | if (*sym_name == '\0') | |
871 | sym_name = bfd_section_name (input_bfd, sym_sec); | |
872 | } | |
873 | ||
874 | /* If args_hash_table is NULL, then we have encountered some | |
875 | kind of link error (ex. undefined symbols). Do not try to | |
876 | apply any relocations, continue the loop so we can notify | |
877 | the user of several errors in a single attempted link. */ | |
878 | if (elf32_hppa_hash_table (info)->args_hash_table == NULL) | |
879 | continue; | |
880 | ||
881 | r = elf32_hppa_bfd_final_link_relocate (howto, input_bfd, output_bfd, | |
882 | input_section, contents, | |
883 | rel->r_offset, relocation, | |
884 | rel->r_addend, info, sym_sec, | |
885 | sym_name, h == NULL); | |
886 | ||
887 | if (r != bfd_reloc_ok) | |
888 | { | |
889 | switch (r) | |
890 | { | |
891 | case bfd_reloc_dangerous: | |
892 | { | |
893 | /* We use this return value to indicate that we performed | |
894 | a "dangerous" relocation. This doesn't mean we did | |
895 | the wrong thing, it just means there may be some cleanup | |
896 | that needs to be done here. | |
897 | ||
898 | In particular we had to swap the last call insn and its | |
899 | delay slot. If the delay slot insn needed a relocation, | |
900 | then we'll need to adjust the next relocation entry's | |
901 | offset to account for the fact that the insn moved. | |
902 | ||
903 | This hair wouldn't be necessary if we inserted stubs | |
904 | between procedures and used a "bl" to get to the stub. */ | |
905 | if (rel != relend) | |
906 | { | |
907 | Elf_Internal_Rela *next_rel = rel + 1; | |
908 | ||
909 | if (rel->r_offset + 4 == next_rel->r_offset) | |
910 | next_rel->r_offset -= 4; | |
911 | } | |
912 | break; | |
913 | } | |
914 | default: | |
915 | case bfd_reloc_outofrange: | |
916 | case bfd_reloc_overflow: | |
917 | { | |
918 | if (!((*info->callbacks->reloc_overflow) | |
919 | (info, sym_name, howto->name, (bfd_vma) 0, | |
920 | input_bfd, input_section, rel->r_offset))) | |
921 | return false; | |
922 | } | |
923 | break; | |
924 | } | |
925 | } | |
926 | } | |
927 | ||
928 | return true; | |
4c85cbfa KR |
929 | } |
930 | ||
f5bfdacd | 931 | /* Return one (or more) BFD relocations which implement the base |
e08b9ad7 | 932 | relocation with modifications based on format and field. */ |
4c85cbfa | 933 | |
e8f2240a KR |
934 | elf32_hppa_reloc_type ** |
935 | hppa_elf_gen_reloc_type (abfd, base_type, format, field) | |
936 | bfd *abfd; | |
937 | elf32_hppa_reloc_type base_type; | |
938 | int format; | |
939 | int field; | |
4c85cbfa | 940 | { |
e8f2240a KR |
941 | elf32_hppa_reloc_type *finaltype; |
942 | elf32_hppa_reloc_type **final_types; | |
e8f2240a | 943 | |
f5bfdacd JL |
944 | /* Allocate slots for the BFD relocation. */ |
945 | final_types = (elf32_hppa_reloc_type **) | |
946 | bfd_alloc_by_size_t (abfd, sizeof (elf32_hppa_reloc_type *) * 2); | |
24f13b03 ILT |
947 | if (final_types == NULL) |
948 | return NULL; | |
e8f2240a | 949 | |
f5bfdacd JL |
950 | /* Allocate space for the relocation itself. */ |
951 | finaltype = (elf32_hppa_reloc_type *) | |
952 | bfd_alloc_by_size_t (abfd, sizeof (elf32_hppa_reloc_type)); | |
24f13b03 ILT |
953 | if (finaltype == NULL) |
954 | return NULL; | |
e8f2240a | 955 | |
f5bfdacd | 956 | /* Some reasonable defaults. */ |
e8f2240a KR |
957 | final_types[0] = finaltype; |
958 | final_types[1] = NULL; | |
959 | ||
960 | #define final_type finaltype[0] | |
961 | ||
962 | final_type = base_type; | |
963 | ||
f5bfdacd JL |
964 | /* Just a tangle of nested switch statements to deal with the braindamage |
965 | that a different field selector means a completely different relocation | |
966 | for PA ELF. */ | |
e8f2240a KR |
967 | switch (base_type) |
968 | { | |
969 | case R_HPPA: | |
24f13b03 | 970 | case R_HPPA_ABS_CALL: |
e8f2240a KR |
971 | switch (format) |
972 | { | |
e8f2240a KR |
973 | case 14: |
974 | switch (field) | |
975 | { | |
976 | case e_rsel: | |
e8f2240a | 977 | case e_rrsel: |
459ae909 | 978 | final_type = R_PARISC_DIR14R; |
e8f2240a | 979 | break; |
459ae909 JL |
980 | case e_rtsel: |
981 | final_type = R_PARISC_DLTREL14R; | |
e8f2240a | 982 | break; |
e8f2240a | 983 | case e_tsel: |
459ae909 | 984 | final_type = R_PARISC_DLTREL14F; |
a36b6f1d | 985 | break; |
459ae909 JL |
986 | case e_rpsel: |
987 | final_type = R_PARISC_PLABEL14R; | |
a36b6f1d | 988 | break; |
e8f2240a | 989 | default: |
24f13b03 | 990 | return NULL; |
e8f2240a KR |
991 | } |
992 | break; | |
f5bfdacd | 993 | |
e8f2240a KR |
994 | case 17: |
995 | switch (field) | |
996 | { | |
997 | case e_fsel: | |
459ae909 | 998 | final_type = R_PARISC_DIR17F; |
e8f2240a KR |
999 | break; |
1000 | case e_rsel: | |
e8f2240a | 1001 | case e_rrsel: |
459ae909 | 1002 | final_type = R_PARISC_DIR17R; |
e8f2240a | 1003 | break; |
e8f2240a | 1004 | default: |
24f13b03 | 1005 | return NULL; |
e8f2240a KR |
1006 | } |
1007 | break; | |
f5bfdacd | 1008 | |
e8f2240a KR |
1009 | case 21: |
1010 | switch (field) | |
1011 | { | |
1012 | case e_lsel: | |
e8f2240a | 1013 | case e_lrsel: |
459ae909 | 1014 | final_type = R_PARISC_DIR21L; |
e8f2240a | 1015 | break; |
a36b6f1d | 1016 | case e_ltsel: |
459ae909 JL |
1017 | final_type = R_PARISC_DLTREL21L; |
1018 | break; | |
1019 | case e_lpsel: | |
1020 | final_type = R_PARISC_PLABEL21L; | |
a36b6f1d | 1021 | break; |
e8f2240a | 1022 | default: |
24f13b03 | 1023 | return NULL; |
e8f2240a KR |
1024 | } |
1025 | break; | |
f5bfdacd | 1026 | |
e8f2240a KR |
1027 | case 32: |
1028 | switch (field) | |
1029 | { | |
1030 | case e_fsel: | |
459ae909 | 1031 | final_type = R_PARISC_DIR32; |
e8f2240a KR |
1032 | break; |
1033 | case e_psel: | |
459ae909 | 1034 | final_type = R_PARISC_PLABEL32; |
a36b6f1d | 1035 | break; |
e8f2240a | 1036 | default: |
24f13b03 | 1037 | return NULL; |
e8f2240a KR |
1038 | } |
1039 | break; | |
f5bfdacd | 1040 | |
e8f2240a | 1041 | default: |
24f13b03 | 1042 | return NULL; |
e8f2240a KR |
1043 | } |
1044 | break; | |
f5bfdacd JL |
1045 | |
1046 | ||
e8f2240a KR |
1047 | case R_HPPA_GOTOFF: |
1048 | switch (format) | |
1049 | { | |
e8f2240a KR |
1050 | case 14: |
1051 | switch (field) | |
1052 | { | |
1053 | case e_rsel: | |
e8f2240a | 1054 | case e_rrsel: |
459ae909 | 1055 | final_type = R_PARISC_DPREL14R; |
e8f2240a KR |
1056 | break; |
1057 | case e_fsel: | |
459ae909 | 1058 | final_type = R_PARISC_DPREL14F; |
e8f2240a | 1059 | break; |
e8f2240a | 1060 | default: |
24f13b03 | 1061 | return NULL; |
e8f2240a KR |
1062 | } |
1063 | break; | |
f5bfdacd | 1064 | |
e8f2240a KR |
1065 | case 21: |
1066 | switch (field) | |
1067 | { | |
e8f2240a | 1068 | case e_lrsel: |
e8f2240a | 1069 | case e_lsel: |
459ae909 | 1070 | final_type = R_PARISC_DPREL21L; |
e8f2240a | 1071 | break; |
e8f2240a | 1072 | default: |
24f13b03 | 1073 | return NULL; |
e8f2240a KR |
1074 | } |
1075 | break; | |
f5bfdacd | 1076 | |
e8f2240a | 1077 | default: |
24f13b03 | 1078 | return NULL; |
e8f2240a KR |
1079 | } |
1080 | break; | |
f5bfdacd JL |
1081 | |
1082 | ||
459ae909 | 1083 | case R_HPPA_PCREL_CALL: |
e8f2240a KR |
1084 | switch (format) |
1085 | { | |
e8f2240a KR |
1086 | case 14: |
1087 | switch (field) | |
1088 | { | |
1089 | case e_rsel: | |
e8f2240a | 1090 | case e_rrsel: |
459ae909 | 1091 | final_type = R_PARISC_PCREL14R; |
e8f2240a KR |
1092 | break; |
1093 | case e_fsel: | |
459ae909 | 1094 | final_type = R_PARISC_PCREL14F; |
e8f2240a | 1095 | break; |
e8f2240a | 1096 | default: |
24f13b03 | 1097 | return NULL; |
e8f2240a KR |
1098 | } |
1099 | break; | |
f5bfdacd | 1100 | |
e8f2240a KR |
1101 | case 17: |
1102 | switch (field) | |
1103 | { | |
1104 | case e_rsel: | |
e8f2240a | 1105 | case e_rrsel: |
459ae909 | 1106 | final_type = R_PARISC_PCREL17R; |
e8f2240a KR |
1107 | break; |
1108 | case e_fsel: | |
459ae909 | 1109 | final_type = R_PARISC_PCREL17F; |
e8f2240a | 1110 | break; |
e8f2240a | 1111 | default: |
24f13b03 | 1112 | return NULL; |
e8f2240a KR |
1113 | } |
1114 | break; | |
f5bfdacd | 1115 | |
e8f2240a KR |
1116 | case 21: |
1117 | switch (field) | |
1118 | { | |
1119 | case e_lsel: | |
e8f2240a | 1120 | case e_lrsel: |
459ae909 | 1121 | final_type = R_PARISC_PCREL21L; |
e8f2240a | 1122 | break; |
e8f2240a | 1123 | default: |
24f13b03 | 1124 | return NULL; |
e8f2240a KR |
1125 | } |
1126 | break; | |
f5bfdacd | 1127 | |
e8f2240a | 1128 | default: |
24f13b03 | 1129 | return NULL; |
e8f2240a KR |
1130 | } |
1131 | break; | |
f5bfdacd | 1132 | |
e8f2240a | 1133 | default: |
24f13b03 | 1134 | return NULL; |
e8f2240a KR |
1135 | } |
1136 | ||
1137 | return final_types; | |
4c85cbfa KR |
1138 | } |
1139 | ||
e8f2240a KR |
1140 | #undef final_type |
1141 | ||
24f13b03 | 1142 | /* Set the contents of a particular section at a particular location. */ |
4c85cbfa | 1143 | |
24f13b03 ILT |
1144 | static boolean |
1145 | elf32_hppa_set_section_contents (abfd, section, location, offset, count) | |
4861ac76 | 1146 | bfd *abfd; |
24f13b03 ILT |
1147 | sec_ptr section; |
1148 | PTR location; | |
1149 | file_ptr offset; | |
1150 | bfd_size_type count; | |
e8f2240a | 1151 | { |
24f13b03 ILT |
1152 | /* Ignore write requests for the symbol extension section until we've |
1153 | had the chance to rebuild it ourselves. */ | |
1154 | if (!strcmp (section->name, ".PARISC.symextn") && !symext_chain_size) | |
1155 | return true; | |
1156 | else | |
1157 | return bfd_elf32_set_section_contents (abfd, section, location, | |
1158 | offset, count); | |
1159 | } | |
1160 | ||
1161 | /* Translate from an elf into field into a howto relocation pointer. */ | |
1162 | ||
1163 | static void | |
1164 | elf_info_to_howto (abfd, cache_ptr, dst) | |
1165 | bfd *abfd; | |
1166 | arelent *cache_ptr; | |
1167 | Elf32_Internal_Rela *dst; | |
1168 | { | |
1169 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_PARISC_UNIMPLEMENTED); | |
1170 | cache_ptr->howto = &elf_hppa_howto_table[ELF32_R_TYPE (dst->r_info)]; | |
1171 | } | |
1172 | ||
1173 | ||
1174 | /* Actually perform a relocation. NOTE this is (mostly) superceeded | |
1175 | by elf32_hppa_bfd_final_link_relocate which is called by the new | |
1176 | fast linker. */ | |
1177 | ||
1178 | static bfd_reloc_status_type | |
1179 | hppa_elf_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd, | |
1180 | error_message) | |
1181 | bfd *abfd; | |
1182 | arelent *reloc_entry; | |
1183 | asymbol *symbol_in; | |
1184 | PTR data; | |
1185 | asection *input_section; | |
1186 | bfd *output_bfd; | |
1187 | char **error_message; | |
1188 | { | |
1189 | /* It is no longer valid to call hppa_elf_reloc when creating | |
1190 | a final executable. */ | |
e8f2240a KR |
1191 | if (output_bfd) |
1192 | { | |
e8f2240a | 1193 | reloc_entry->address += input_section->output_offset; |
459ae909 JL |
1194 | |
1195 | /* Work around lossage in generic elf code to write relocations. | |
1196 | (maps different section symbols into the same symbol index). */ | |
1197 | if ((symbol_in->flags & BSF_SECTION_SYM) | |
1198 | && symbol_in->section) | |
1199 | reloc_entry->addend += symbol_in->section->output_offset; | |
e8f2240a KR |
1200 | return bfd_reloc_ok; |
1201 | } | |
24f13b03 ILT |
1202 | else |
1203 | { | |
1204 | *error_message = (char *) "Unsupported call to hppa_elf_reloc"; | |
1205 | return bfd_reloc_notsupported; | |
1206 | } | |
1207 | } | |
e8f2240a | 1208 | |
24f13b03 ILT |
1209 | /* Actually perform a relocation as part of a final link. This can get |
1210 | rather hairy when linker stubs are needed. */ | |
e8f2240a | 1211 | |
24f13b03 ILT |
1212 | static bfd_reloc_status_type |
1213 | elf32_hppa_bfd_final_link_relocate (howto, input_bfd, output_bfd, | |
1214 | input_section, contents, offset, value, | |
1215 | addend, info, sym_sec, sym_name, is_local) | |
1216 | const reloc_howto_type *howto; | |
1217 | bfd *input_bfd; | |
1218 | bfd *output_bfd; | |
1219 | asection *input_section; | |
1220 | bfd_byte *contents; | |
1221 | bfd_vma offset; | |
1222 | bfd_vma value; | |
1223 | bfd_vma addend; | |
1224 | struct bfd_link_info *info; | |
1225 | asection *sym_sec; | |
1226 | const char *sym_name; | |
1227 | int is_local; | |
1228 | { | |
1229 | unsigned long insn; | |
1230 | unsigned long r_type = howto->type; | |
1231 | unsigned long r_format = howto->bitsize; | |
1232 | unsigned long r_field = e_fsel; | |
1233 | bfd_byte *hit_data = contents + offset + input_section->vma; | |
1234 | boolean r_pcrel = howto->pc_relative; | |
e8f2240a | 1235 | |
24f13b03 | 1236 | insn = bfd_get_32 (input_bfd, hit_data); |
f5bfdacd | 1237 | |
24f13b03 ILT |
1238 | /* Make sure we have a value for $global$. FIXME isn't this effectively |
1239 | just like the gp pointer on MIPS? Can we use those routines for this | |
1240 | purpose? */ | |
1241 | if (!elf32_hppa_hash_table (info)->global_sym_defined) | |
e8f2240a | 1242 | { |
24f13b03 ILT |
1243 | struct elf_link_hash_entry *h; |
1244 | asection *sec; | |
1245 | ||
1246 | h = elf_link_hash_lookup (elf_hash_table (info), "$global$", false, | |
1247 | false, false); | |
e8f2240a | 1248 | |
24f13b03 ILT |
1249 | /* If there isn't a $global$, then we're in deep trouble. */ |
1250 | if (h == NULL) | |
1251 | return bfd_reloc_notsupported; | |
1252 | ||
1253 | sec = h->root.u.def.section; | |
1254 | elf32_hppa_hash_table (info)->global_value = (h->root.u.def.value | |
1255 | + sec->vma | |
1256 | + sec->output_offset); | |
1257 | elf32_hppa_hash_table (info)->global_sym_defined = 1; | |
1258 | } | |
e8f2240a | 1259 | |
e8f2240a KR |
1260 | switch (r_type) |
1261 | { | |
459ae909 | 1262 | case R_PARISC_NONE: |
e8f2240a | 1263 | break; |
4861ac76 | 1264 | |
459ae909 JL |
1265 | case R_PARISC_DIR32: |
1266 | case R_PARISC_DIR17F: | |
459ae909 | 1267 | case R_PARISC_PCREL17C: |
e8f2240a KR |
1268 | r_field = e_fsel; |
1269 | goto do_basic_type_1; | |
459ae909 JL |
1270 | case R_PARISC_DIR21L: |
1271 | case R_PARISC_PCREL21L: | |
e8f2240a KR |
1272 | r_field = e_lrsel; |
1273 | goto do_basic_type_1; | |
459ae909 JL |
1274 | case R_PARISC_DIR17R: |
1275 | case R_PARISC_PCREL17R: | |
1276 | case R_PARISC_DIR14R: | |
1277 | case R_PARISC_PCREL14R: | |
e8f2240a | 1278 | r_field = e_rrsel; |
459ae909 | 1279 | goto do_basic_type_1; |
e8f2240a | 1280 | |
24f13b03 ILT |
1281 | /* For all the DP relative relocations, we need to examine the symbol's |
1282 | section. If it's a code section, then "data pointer relative" makes | |
1283 | no sense. In that case we don't adjust the "value", and for 21 bit | |
1284 | addil instructions, we change the source addend register from %dp to | |
1285 | %r0. */ | |
459ae909 | 1286 | case R_PARISC_DPREL21L: |
e8f2240a | 1287 | r_field = e_lrsel; |
24f13b03 ILT |
1288 | if (sym_sec->flags & SEC_CODE) |
1289 | insn &= ~0x03e00000; | |
1290 | else | |
1291 | value -= elf32_hppa_hash_table (info)->global_value; | |
459ae909 JL |
1292 | goto do_basic_type_1; |
1293 | case R_PARISC_DPREL14R: | |
e8f2240a | 1294 | r_field = e_rrsel; |
24f13b03 ILT |
1295 | if ((sym_sec->flags & SEC_CODE) == 0) |
1296 | value -= elf32_hppa_hash_table (info)->global_value; | |
459ae909 JL |
1297 | goto do_basic_type_1; |
1298 | case R_PARISC_DPREL14F: | |
e8f2240a | 1299 | r_field = e_fsel; |
24f13b03 ILT |
1300 | if ((sym_sec->flags & SEC_CODE) == 0) |
1301 | value -= elf32_hppa_hash_table (info)->global_value; | |
459ae909 | 1302 | goto do_basic_type_1; |
4861ac76 | 1303 | |
24f13b03 ILT |
1304 | /* These cases are separate as they may involve a lot more work |
1305 | to deal with linker stubs. */ | |
1306 | case R_PARISC_PLABEL32: | |
1307 | case R_PARISC_PLABEL21L: | |
1308 | case R_PARISC_PLABEL14R: | |
1309 | case R_PARISC_PCREL17F: | |
1310 | { | |
1311 | bfd_vma location; | |
1312 | unsigned int len, caller_args, callee_args; | |
1313 | arg_reloc_type arg_reloc_types[5]; | |
1314 | struct elf32_hppa_args_hash_table *args_hash_table; | |
1315 | struct elf32_hppa_args_hash_entry *args_hash; | |
1316 | char *new_name, *stub_name; | |
1317 | ||
1318 | /* Get the field selector right. We'll need it in a minute. */ | |
1319 | if (r_type == R_PARISC_PCREL17F | |
1320 | || r_type == R_PARISC_PLABEL32) | |
1321 | r_field = e_fsel; | |
1322 | else if (r_type == R_PARISC_PLABEL21L) | |
1323 | r_field = e_lrsel; | |
1324 | else if (r_type == R_PARISC_PLABEL14R) | |
1325 | r_field = e_rrsel; | |
1326 | ||
1327 | /* Find out where we are and where we're going. */ | |
1328 | location = (offset + | |
1329 | input_section->output_offset + | |
1330 | input_section->output_section->vma); | |
1331 | ||
1332 | /* Now look for the argument relocation bits associated with the | |
1333 | target. */ | |
1334 | len = strlen (sym_name) + 1; | |
1335 | if (is_local) | |
1336 | len += 9; | |
1337 | new_name = malloc (len); | |
1338 | if (!new_name) | |
1339 | { | |
1340 | bfd_set_error (bfd_error_no_memory); | |
1341 | return bfd_reloc_notsupported; | |
1342 | } | |
1343 | strcpy (new_name, sym_name); | |
e8f2240a | 1344 | |
24f13b03 ILT |
1345 | /* Local symbols have unique IDs. */ |
1346 | if (is_local) | |
1347 | sprintf (new_name + len - 10, "_%08x", (int)sym_sec); | |
e8f2240a | 1348 | |
24f13b03 | 1349 | args_hash_table = elf32_hppa_hash_table (info)->args_hash_table; |
4861ac76 | 1350 | |
24f13b03 ILT |
1351 | args_hash = elf32_hppa_args_hash_lookup (args_hash_table, |
1352 | new_name, false, false); | |
1353 | if (args_hash == NULL) | |
1354 | callee_args = 0; | |
1355 | else | |
1356 | callee_args = args_hash->arg_bits; | |
7218bb04 | 1357 | |
24f13b03 ILT |
1358 | /* If this is a CALL relocation, then get the caller's bits |
1359 | from the addend. Else use the magic 0x155 value for PLABELS. | |
1360 | ||
1361 | Also we don't care about the destination (value) for PLABELS. */ | |
1362 | if (r_type == R_PARISC_PCREL17F) | |
1363 | caller_args = HPPA_R_ARG_RELOC (addend); | |
1364 | else | |
1365 | { | |
1366 | caller_args = 0x155; | |
1367 | location = value; | |
1368 | } | |
1369 | ||
1370 | /* Any kind of linker stub needed? */ | |
1371 | if (((int)(value - location) > 0x3ffff) | |
1372 | || ((int)(value - location) < (int)0xfffc0000) | |
1373 | || elf32_hppa_arg_reloc_needed (caller_args, callee_args, | |
1374 | arg_reloc_types)) | |
1375 | { | |
1376 | struct elf32_hppa_stub_hash_table *stub_hash_table; | |
1377 | struct elf32_hppa_stub_hash_entry *stub_hash; | |
1378 | asection *stub_section; | |
7218bb04 | 1379 | |
24f13b03 | 1380 | /* Build a name for the stub. */ |
f5bfdacd | 1381 | |
24f13b03 ILT |
1382 | len = strlen (new_name); |
1383 | len += 23; | |
1384 | stub_name = malloc (len); | |
1385 | if (!stub_name) | |
1386 | { | |
1387 | bfd_set_error (bfd_error_no_memory); | |
1388 | return bfd_reloc_notsupported; | |
1389 | } | |
1390 | elf32_hppa_name_of_stub (caller_args, callee_args, | |
1391 | location, value, stub_name); | |
1392 | strcat (stub_name, new_name); | |
1393 | free (new_name); | |
1394 | ||
1395 | stub_hash_table = elf32_hppa_hash_table (info)->stub_hash_table; | |
1396 | ||
1397 | stub_hash | |
1398 | = elf32_hppa_stub_hash_lookup (stub_hash_table, stub_name, | |
1399 | false, false); | |
1400 | ||
1401 | /* We're done with that name. */ | |
1402 | free (stub_name); | |
1403 | ||
1404 | /* The stub BFD only has one section. */ | |
1405 | stub_section = stub_hash_table->stub_bfd->sections; | |
1406 | ||
1407 | if (stub_hash != NULL) | |
1408 | { | |
1409 | ||
1410 | if (r_type == R_PARISC_PCREL17F) | |
1411 | { | |
1412 | unsigned long delay_insn; | |
1413 | unsigned int opcode, rtn_reg, ldo_target_reg, ldo_src_reg; | |
1414 | ||
1415 | /* We'll need to peek at the next insn. */ | |
1416 | delay_insn = bfd_get_32 (input_bfd, hit_data + 4); | |
1417 | opcode = get_opcode (delay_insn); | |
1418 | ||
1419 | /* We also need to know the return register for this | |
1420 | call. */ | |
1421 | rtn_reg = (insn & 0x03e00000) >> 21; | |
1422 | ||
1423 | ldo_src_reg = (delay_insn & 0x03e00000) >> 21; | |
1424 | ldo_target_reg = (delay_insn & 0x001f0000) >> 16; | |
1425 | ||
1426 | /* Munge up the value and other parameters for | |
1427 | hppa_elf_relocate_insn. */ | |
1428 | ||
1429 | value = (stub_hash->offset | |
1430 | + stub_section->output_offset | |
1431 | + stub_section->output_section->vma); | |
1432 | ||
1433 | r_format = 17; | |
1434 | r_field = e_fsel; | |
1435 | r_pcrel = 0; | |
1436 | addend = 0; | |
1437 | ||
1438 | /* We need to peek at the delay insn and determine if | |
1439 | we'll need to swap the branch and its delay insn. */ | |
1440 | if ((insn & 2) | |
1441 | || (opcode == LDO | |
1442 | && ldo_target_reg == rtn_reg) | |
1443 | || (delay_insn == 0x08000240)) | |
1444 | { | |
1445 | /* No need to swap the branch and its delay slot, but | |
1446 | we do need to make sure to jump past the return | |
1447 | pointer update in the stub. */ | |
1448 | value += 4; | |
1449 | ||
1450 | /* If the delay insn does a return pointer adjustment, | |
1451 | then we have to make sure it stays valid. */ | |
1452 | if (opcode == LDO | |
1453 | && ldo_target_reg == rtn_reg) | |
1454 | { | |
1455 | delay_insn &= 0xfc00ffff; | |
1456 | delay_insn |= ((31 << 21) | (31 << 16)); | |
1457 | bfd_put_32 (input_bfd, delay_insn, hit_data + 4); | |
1458 | } | |
1459 | /* Use a BLE to reach the stub. */ | |
1460 | insn = BLE_SR4_R0; | |
1461 | } | |
1462 | else | |
1463 | { | |
1464 | /* Wonderful, we have to swap the call insn and its | |
1465 | delay slot. */ | |
1466 | bfd_put_32 (input_bfd, delay_insn, hit_data); | |
1467 | /* Use a BLE,n to reach the stub. */ | |
1468 | insn = (BLE_SR4_R0 | 0x2); | |
1469 | bfd_put_32 (input_bfd, insn, hit_data + 4); | |
1470 | insn = hppa_elf_relocate_insn (input_bfd, | |
1471 | input_section, | |
1472 | insn, offset + 4, | |
1473 | value, addend, | |
1474 | r_format, r_field, | |
1475 | r_pcrel); | |
1476 | /* Update the instruction word. */ | |
1477 | bfd_put_32 (input_bfd, insn, hit_data + 4); | |
1478 | return bfd_reloc_dangerous; | |
1479 | } | |
1480 | } | |
1481 | else | |
1482 | { | |
1483 | /* PLABEL stuff is easy. */ | |
1484 | ||
1485 | value = (stub_hash->offset | |
1486 | + stub_section->output_offset | |
1487 | + stub_section->output_section->vma); | |
1488 | /* We don't need the RP adjustment for PLABELs. */ | |
1489 | value += 4; | |
1490 | if (r_type == R_PARISC_PLABEL32) | |
1491 | r_format = 32; | |
1492 | else if (r_type == R_PARISC_PLABEL21L) | |
1493 | r_format = 21; | |
1494 | else if (r_type == R_PARISC_PLABEL14R) | |
1495 | r_format = 14; | |
1496 | ||
1497 | r_pcrel = 0; | |
1498 | addend = 0; | |
1499 | } | |
7218bb04 | 1500 | } |
4861ac76 | 1501 | else |
24f13b03 ILT |
1502 | return bfd_reloc_notsupported; |
1503 | } | |
1504 | goto do_basic_type_1; | |
1505 | } | |
1506 | ||
1507 | do_basic_type_1: | |
1508 | insn = hppa_elf_relocate_insn (input_bfd, input_section, insn, | |
1509 | offset, value, addend, r_format, | |
1510 | r_field, r_pcrel); | |
d9ad93bc | 1511 | break; |
24f13b03 | 1512 | |
f5bfdacd | 1513 | /* Something we don't know how to handle. */ |
e8f2240a | 1514 | default: |
f5bfdacd | 1515 | return bfd_reloc_notsupported; |
e8f2240a KR |
1516 | } |
1517 | ||
4861ac76 | 1518 | /* Update the instruction word. */ |
24f13b03 | 1519 | bfd_put_32 (input_bfd, insn, hit_data); |
e8f2240a | 1520 | return (bfd_reloc_ok); |
e8f2240a KR |
1521 | } |
1522 | ||
f5bfdacd JL |
1523 | /* Return the address of the howto table entry to perform the CODE |
1524 | relocation for an ARCH machine. */ | |
1525 | ||
1526 | static CONST reloc_howto_type * | |
7ed5e970 ILT |
1527 | elf_hppa_reloc_type_lookup (abfd, code) |
1528 | bfd *abfd; | |
e8f2240a KR |
1529 | bfd_reloc_code_real_type code; |
1530 | { | |
459ae909 | 1531 | if ((int) code < (int) R_PARISC_UNIMPLEMENTED) |
e8f2240a KR |
1532 | { |
1533 | BFD_ASSERT ((int) elf_hppa_howto_table[(int) code].type == (int) code); | |
1534 | return &elf_hppa_howto_table[(int) code]; | |
1535 | } | |
f5bfdacd | 1536 | return NULL; |
e8f2240a KR |
1537 | } |
1538 | ||
25057836 JL |
1539 | /* Return true if SYM represents a local label symbol. */ |
1540 | ||
1541 | static boolean | |
1542 | hppa_elf_is_local_label (abfd, sym) | |
1543 | bfd *abfd; | |
1544 | asymbol *sym; | |
1545 | { | |
1546 | return (sym->name[0] == 'L' && sym->name[1] == '$'); | |
1547 | } | |
e8f2240a | 1548 | |
459ae909 JL |
1549 | /* Do any backend specific processing when beginning to write an object |
1550 | file. For PA ELF we need to determine the size of the symbol extension | |
1551 | section *before* any other output processing happens. */ | |
1552 | ||
1553 | static void | |
24f13b03 | 1554 | elf32_hppa_backend_begin_write_processing (abfd, info) |
459ae909 | 1555 | bfd *abfd; |
24f13b03 | 1556 | struct bfd_link_info *info; |
459ae909 | 1557 | { |
24f13b03 | 1558 | unsigned int i; |
459ae909 JL |
1559 | asection *symextn_sec; |
1560 | ||
24f13b03 ILT |
1561 | /* Size up the symbol extension section. */ |
1562 | if ((abfd->outsymbols == NULL | |
1563 | && info == NULL) | |
1564 | || symext_chain_size != 0) | |
459ae909 JL |
1565 | return; |
1566 | ||
24f13b03 | 1567 | if (info == NULL) |
459ae909 | 1568 | { |
24f13b03 ILT |
1569 | /* We were not called from the BFD ELF linker code, so we need |
1570 | to examine the output BFD's outsymbols. | |
459ae909 | 1571 | |
24f13b03 ILT |
1572 | Note we can not build the symbol extensions now as the symbol |
1573 | map hasn't been set up. */ | |
1574 | for (i = 0; i < abfd->symcount; i++) | |
1575 | { | |
1576 | elf_symbol_type *symbol = (elf_symbol_type *)abfd->outsymbols[i]; | |
459ae909 | 1577 | |
24f13b03 ILT |
1578 | /* Only functions ever need an entry in the symbol extension |
1579 | section. */ | |
1580 | if (!(symbol->symbol.flags & BSF_FUNCTION)) | |
1581 | continue; | |
1582 | ||
1583 | /* And only if they specify the locations of their arguments. */ | |
1584 | if (symbol->tc_data.hppa_arg_reloc == 0) | |
1585 | continue; | |
1586 | ||
1587 | /* Yup. This function symbol needs an entry. */ | |
1588 | symext_chain_size += 2 * sizeof (symext_entryS); | |
1589 | } | |
1590 | } | |
1591 | else if (info->relocateable == true) | |
1592 | { | |
1593 | struct elf32_hppa_args_hash_table *table; | |
1594 | table = elf32_hppa_hash_table (info)->args_hash_table; | |
459ae909 | 1595 | |
24f13b03 ILT |
1596 | /* Determine the size of the symbol extension section. */ |
1597 | elf32_hppa_args_hash_traverse (table, | |
1598 | elf32_hppa_size_symext, | |
1599 | &symext_chain_size); | |
459ae909 JL |
1600 | } |
1601 | ||
1602 | /* Now create the section and set its size. We'll fill in the | |
1603 | contents later. */ | |
1604 | symextn_sec = bfd_get_section_by_name (abfd, SYMEXTN_SECTION_NAME); | |
1605 | if (symextn_sec == NULL) | |
24f13b03 ILT |
1606 | symextn_sec = bfd_make_section (abfd, SYMEXTN_SECTION_NAME); |
1607 | ||
1608 | bfd_set_section_flags (abfd, symextn_sec, | |
1609 | SEC_LOAD | SEC_HAS_CONTENTS | SEC_DATA); | |
1610 | symextn_sec->output_section = symextn_sec; | |
1611 | symextn_sec->output_offset = 0; | |
1612 | bfd_set_section_alignment (abfd, symextn_sec, 2); | |
1613 | bfd_set_section_size (abfd, symextn_sec, symext_chain_size); | |
1614 | } | |
1615 | ||
1616 | /* Called for each entry in the args location hash table. For each | |
1617 | entry we bump the size pointer by 2 records (16 bytes). */ | |
1618 | ||
1619 | static boolean | |
1620 | elf32_hppa_size_symext (gen_entry, in_args) | |
1621 | struct bfd_hash_entry *gen_entry; | |
1622 | PTR in_args; | |
1623 | { | |
1624 | unsigned int *sizep = (unsigned int *)in_args; | |
1625 | ||
1626 | *sizep += 2 * sizeof (symext_entryS); | |
1627 | return true; | |
1628 | } | |
1629 | ||
1630 | /* Backend routine called by the linker for each output symbol. | |
1631 | ||
1632 | For PA ELF we use this opportunity to add an appropriate entry | |
1633 | to the symbol extension chain for function symbols. */ | |
1634 | ||
1635 | static boolean | |
1636 | elf32_hppa_link_output_symbol_hook (abfd, info, name, sym, section) | |
1637 | bfd *abfd; | |
1638 | struct bfd_link_info *info; | |
1639 | const char *name; | |
1640 | Elf_Internal_Sym *sym; | |
1641 | asection *section; | |
1642 | { | |
1643 | char *new_name; | |
1644 | unsigned int len, index; | |
1645 | struct elf32_hppa_args_hash_table *args_hash_table; | |
1646 | struct elf32_hppa_args_hash_entry *args_hash; | |
1647 | ||
1648 | /* If the args hash table is NULL, then we've encountered an error | |
1649 | of some sorts (for example, an undefined symbol). In that case | |
1650 | we've got nothing else to do. | |
1651 | ||
1652 | NOTE: elf_link_output_symbol will abort if we return false here! */ | |
1653 | if (elf32_hppa_hash_table (info)->args_hash_table == NULL) | |
1654 | return true; | |
1655 | ||
1656 | index = elf32_hppa_hash_table (info)->output_symbol_count++; | |
1657 | ||
1658 | /* We need to look up this symbol in the args hash table to see if | |
1659 | it has argument relocation bits. */ | |
1660 | if (ELF_ST_TYPE (sym->st_info) != STT_FUNC) | |
1661 | return true; | |
1662 | ||
1663 | /* We know it's a function symbol of some kind. */ | |
1664 | len = strlen (name) + 1; | |
1665 | if (ELF_ST_BIND (sym->st_info) == STB_LOCAL) | |
1666 | len += 9; | |
1667 | ||
1668 | new_name = malloc (len); | |
1669 | if (new_name == NULL) | |
459ae909 | 1670 | { |
24f13b03 ILT |
1671 | bfd_set_error (bfd_error_no_memory); |
1672 | return false; | |
459ae909 JL |
1673 | } |
1674 | ||
24f13b03 ILT |
1675 | strcpy (new_name, name); |
1676 | if (ELF_ST_BIND (sym->st_info) == STB_LOCAL) | |
1677 | sprintf (new_name + len - 10, "_%08x", (int)section); | |
1678 | ||
1679 | /* Now that we have the unique name, we can look it up in the | |
1680 | args hash table. */ | |
1681 | args_hash_table = elf32_hppa_hash_table (info)->args_hash_table; | |
1682 | args_hash = elf32_hppa_args_hash_lookup (args_hash_table, new_name, | |
1683 | false, false); | |
1684 | free (new_name); | |
1685 | if (args_hash == NULL) | |
1686 | return true; | |
1687 | ||
1688 | /* We know this symbol has arg reloc bits. */ | |
1689 | add_entry_to_symext_chain (abfd, args_hash->arg_bits, | |
1690 | index, &symext_rootP, &symext_lastP); | |
1691 | return true; | |
459ae909 JL |
1692 | } |
1693 | ||
1694 | /* Perform any processing needed late in the object file writing process. | |
1695 | For PA ELF we build and set the contents of the symbol extension | |
1696 | section. */ | |
1697 | ||
1698 | static void | |
24f13b03 | 1699 | elf32_hppa_backend_final_write_processing (abfd, linker) |
459ae909 | 1700 | bfd *abfd; |
24f13b03 | 1701 | boolean linker; |
459ae909 JL |
1702 | { |
1703 | asection *symextn_sec; | |
24f13b03 | 1704 | unsigned int i, *symtab_map = (unsigned int *) elf_sym_extra (abfd); |
459ae909 JL |
1705 | |
1706 | /* Now build the symbol extension section. */ | |
1707 | if (symext_chain_size == 0) | |
24f13b03 | 1708 | return; |
459ae909 | 1709 | |
24f13b03 | 1710 | if (! linker) |
459ae909 | 1711 | { |
24f13b03 ILT |
1712 | /* We were not called from the backend linker, so we still need |
1713 | to build the symbol extension chain. | |
459ae909 | 1714 | |
24f13b03 ILT |
1715 | Look at each symbol, adding the appropriate information to the |
1716 | symbol extension section list as necessary. */ | |
1717 | for (i = 0; i < abfd->symcount; i++) | |
1718 | { | |
1719 | elf_symbol_type *symbol = (elf_symbol_type *) abfd->outsymbols[i]; | |
459ae909 | 1720 | |
24f13b03 ILT |
1721 | /* Only functions ever need an entry in the symbol extension |
1722 | section. */ | |
1723 | if (!(symbol->symbol.flags & BSF_FUNCTION)) | |
1724 | continue; | |
1725 | ||
1726 | /* And only if they specify the locations of their arguments. */ | |
1727 | if (symbol->tc_data.hppa_arg_reloc == 0) | |
1728 | continue; | |
459ae909 | 1729 | |
24f13b03 ILT |
1730 | /* Add this symbol's information to the chain. */ |
1731 | add_entry_to_symext_chain (abfd, symbol->tc_data.hppa_arg_reloc, | |
1732 | symtab_map[i], &symext_rootP, | |
1733 | &symext_lastP); | |
1734 | } | |
459ae909 JL |
1735 | } |
1736 | ||
24f13b03 | 1737 | /* Now fill in the contents of the symbol extension section. */ |
459ae909 JL |
1738 | elf_hppa_tc_make_sections (abfd, symext_rootP); |
1739 | ||
1740 | /* And attach that as the section's contents. */ | |
1741 | symextn_sec = bfd_get_section_by_name (abfd, SYMEXTN_SECTION_NAME); | |
1742 | if (symextn_sec == (asection *) 0) | |
1743 | abort(); | |
1744 | ||
1745 | symextn_sec->contents = (void *)symextn_contents; | |
24f13b03 ILT |
1746 | |
1747 | bfd_set_section_contents (abfd, symextn_sec, symextn_sec->contents, | |
459ae909 JL |
1748 | symextn_sec->output_offset, symextn_sec->_raw_size); |
1749 | } | |
1750 | ||
f5bfdacd JL |
1751 | /* Update the symbol extention chain to include the symbol pointed to |
1752 | by SYMBOLP if SYMBOLP is a function symbol. Used internally and by GAS. */ | |
e8f2240a | 1753 | |
459ae909 | 1754 | static void |
24f13b03 | 1755 | add_entry_to_symext_chain (abfd, arg_reloc, sym_idx, symext_root, symext_last) |
f4bd7a8f | 1756 | bfd *abfd; |
24f13b03 ILT |
1757 | unsigned int arg_reloc; |
1758 | unsigned int sym_idx; | |
f5bfdacd JL |
1759 | symext_chainS **symext_root; |
1760 | symext_chainS **symext_last; | |
e8f2240a KR |
1761 | { |
1762 | symext_chainS *symextP; | |
3a70b01d | 1763 | |
f5bfdacd | 1764 | /* Allocate memory and initialize this entry. */ |
e8f2240a | 1765 | symextP = (symext_chainS *) bfd_alloc (abfd, sizeof (symext_chainS) * 2); |
9783e04a DM |
1766 | if (!symextP) |
1767 | { | |
f5bfdacd | 1768 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
1769 | abort(); /* FIXME */ |
1770 | } | |
e8f2240a | 1771 | |
459ae909 | 1772 | symextP[0].entry = ELF32_PARISC_SX_WORD (PARISC_SXT_SYMNDX, sym_idx); |
e8f2240a KR |
1773 | symextP[0].next = &symextP[1]; |
1774 | ||
459ae909 | 1775 | symextP[1].entry = ELF32_PARISC_SX_WORD (PARISC_SXT_ARG_RELOC, arg_reloc); |
e8f2240a KR |
1776 | symextP[1].next = NULL; |
1777 | ||
f5bfdacd JL |
1778 | /* Now update the chain itself so it can be walked later to build |
1779 | the symbol extension section. */ | |
1780 | if (*symext_root == NULL) | |
e8f2240a | 1781 | { |
f5bfdacd JL |
1782 | *symext_root = &symextP[0]; |
1783 | *symext_last = &symextP[1]; | |
e8f2240a KR |
1784 | } |
1785 | else | |
1786 | { | |
f5bfdacd JL |
1787 | (*symext_last)->next = &symextP[0]; |
1788 | *symext_last = &symextP[1]; | |
e8f2240a KR |
1789 | } |
1790 | } | |
1791 | ||
24f13b03 | 1792 | /* Build the symbol extension section. */ |
e8f2240a | 1793 | |
459ae909 | 1794 | static void |
f5bfdacd | 1795 | elf_hppa_tc_make_sections (abfd, symext_root) |
f4bd7a8f | 1796 | bfd *abfd; |
f5bfdacd | 1797 | symext_chainS *symext_root; |
e8f2240a KR |
1798 | { |
1799 | symext_chainS *symextP; | |
24f13b03 | 1800 | unsigned int i; |
e8f2240a KR |
1801 | asection *symextn_sec; |
1802 | ||
e8f2240a | 1803 | symextn_sec = bfd_get_section_by_name (abfd, SYMEXTN_SECTION_NAME); |
f5bfdacd JL |
1804 | |
1805 | /* Grab some memory for the contents of the symbol extension section | |
1806 | itself. */ | |
459ae909 JL |
1807 | symextn_contents = (symext_entryS *) bfd_zalloc (abfd, |
1808 | symextn_sec->_raw_size); | |
9783e04a DM |
1809 | if (!symextn_contents) |
1810 | { | |
f5bfdacd | 1811 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
1812 | abort(); /* FIXME */ |
1813 | } | |
e8f2240a | 1814 | |
459ae909 | 1815 | /* Fill in the contents of the symbol extension chain. */ |
f5bfdacd | 1816 | for (i = 0, symextP = symext_root; symextP; symextP = symextP->next, ++i) |
e8f2240a | 1817 | symextn_contents[i] = symextP->entry; |
e8f2240a KR |
1818 | |
1819 | return; | |
1820 | } | |
1821 | ||
24f13b03 ILT |
1822 | /* Do some PA ELF specific work after reading in the symbol table. |
1823 | In particular attach the argument relocation from the | |
1824 | symbol extension section to the appropriate symbols. */ | |
e8f2240a | 1825 | |
24f13b03 ILT |
1826 | static boolean |
1827 | elf32_hppa_backend_symbol_table_processing (abfd, esyms,symcnt) | |
e8f2240a | 1828 | bfd *abfd; |
24f13b03 ILT |
1829 | elf_symbol_type *esyms; |
1830 | int symcnt; | |
e8f2240a | 1831 | { |
24f13b03 ILT |
1832 | Elf32_Internal_Shdr *symextn_hdr = |
1833 | bfd_elf_find_section (abfd, SYMEXTN_SECTION_NAME); | |
1834 | unsigned int i, current_sym_idx = 0; | |
1835 | ||
1836 | /* If no symbol extension existed, then all symbol extension information | |
1837 | is assumed to be zero. */ | |
1838 | if (symextn_hdr == NULL) | |
e8f2240a | 1839 | { |
24f13b03 ILT |
1840 | for (i = 0; i < symcnt; i++) |
1841 | esyms[i].tc_data.hppa_arg_reloc = 0; | |
1842 | return (true); | |
1843 | } | |
e8f2240a | 1844 | |
24f13b03 ILT |
1845 | /* FIXME: Why not use bfd_get_section_contents here? Also should give |
1846 | memory back when we're done. */ | |
1847 | /* Allocate a buffer of the appropriate size for the symextn section. */ | |
1848 | symextn_hdr->contents = bfd_zalloc(abfd,symextn_hdr->sh_size); | |
1849 | if (!symextn_hdr->contents) | |
1850 | { | |
1851 | bfd_set_error (bfd_error_no_memory); | |
1852 | return false; | |
e8f2240a | 1853 | } |
24f13b03 | 1854 | symextn_hdr->size = symextn_hdr->sh_size; |
e8f2240a | 1855 | |
24f13b03 ILT |
1856 | /* Read in the symextn section. */ |
1857 | if (bfd_seek (abfd, symextn_hdr->sh_offset, SEEK_SET) == -1) | |
1858 | return false; | |
1859 | if (bfd_read ((PTR) symextn_hdr->contents, 1, symextn_hdr->size, abfd) | |
1860 | != symextn_hdr->size) | |
1861 | return false; | |
e8f2240a | 1862 | |
24f13b03 ILT |
1863 | /* Parse entries in the symbol extension section, updating the symtab |
1864 | entries as we go */ | |
1865 | for (i = 0; i < symextn_hdr->size / sizeof(symext_entryS); i++) | |
1866 | { | |
1867 | symext_entryS *seP = ((symext_entryS *)symextn_hdr->contents) + i; | |
1868 | unsigned int se_value = ELF32_PARISC_SX_VAL (*seP); | |
1869 | unsigned int se_type = ELF32_PARISC_SX_TYPE (*seP); | |
e8f2240a | 1870 | |
24f13b03 ILT |
1871 | switch (se_type) |
1872 | { | |
1873 | case PARISC_SXT_NULL: | |
1874 | break; | |
e8f2240a | 1875 | |
24f13b03 ILT |
1876 | case PARISC_SXT_SYMNDX: |
1877 | if (se_value >= symcnt) | |
1878 | { | |
1879 | bfd_set_error (bfd_error_bad_value); | |
1880 | return (false); | |
1881 | } | |
1882 | current_sym_idx = se_value - 1; | |
1883 | break; | |
1884 | ||
1885 | case PARISC_SXT_ARG_RELOC: | |
1886 | esyms[current_sym_idx].tc_data.hppa_arg_reloc = se_value; | |
1887 | break; | |
1888 | ||
1889 | default: | |
1890 | bfd_set_error (bfd_error_bad_value); | |
1891 | return (false); | |
1892 | } | |
e8f2240a | 1893 | } |
24f13b03 | 1894 | return (true); |
e8f2240a KR |
1895 | } |
1896 | ||
24f13b03 ILT |
1897 | /* Read and attach the symbol extension information for the symbols |
1898 | in INPUT_BFD to the argument location hash table. Handle locals | |
1899 | if DO_LOCALS is true; likewise for globals when DO_GLOBALS is true. */ | |
1900 | ||
1901 | static boolean | |
1902 | elf32_hppa_read_symext_info (input_bfd, symtab_hdr, args_hash_table, | |
1903 | local_syms, do_locals, do_globals) | |
1904 | bfd *input_bfd; | |
1905 | Elf_Internal_Shdr *symtab_hdr; | |
1906 | struct elf32_hppa_args_hash_table *args_hash_table; | |
1907 | Elf_Internal_Sym *local_syms; | |
1908 | boolean do_locals; | |
1909 | boolean do_globals; | |
e8f2240a | 1910 | { |
24f13b03 ILT |
1911 | asection *symextn_sec; |
1912 | symextn_entry *contents; | |
1913 | unsigned int i, n_entries, current_index = 0; | |
e8f2240a | 1914 | |
24f13b03 ILT |
1915 | /* Get the symbol extension section for this BFD. If no section exists |
1916 | then there's nothing to do. Likewise if the section exists, but | |
1917 | has no contents. */ | |
1918 | symextn_sec = bfd_get_section_by_name (input_bfd, SYMEXTN_SECTION_NAME); | |
1919 | if (symextn_sec == NULL) | |
1920 | return true; | |
e8f2240a | 1921 | |
24f13b03 ILT |
1922 | /* Done separately so we can turn off SEC_HAS_CONTENTS (see below). */ |
1923 | if (symextn_sec->_raw_size == 0) | |
3a70b01d | 1924 | { |
24f13b03 ILT |
1925 | symextn_sec->flags &= ~SEC_HAS_CONTENTS; |
1926 | return true; | |
3a70b01d | 1927 | } |
24f13b03 ILT |
1928 | |
1929 | contents = (symextn_entry *) malloc (symextn_sec->_raw_size); | |
1930 | if (contents == NULL) | |
3a70b01d | 1931 | { |
f5bfdacd | 1932 | bfd_set_error (bfd_error_no_memory); |
24f13b03 | 1933 | return false; |
3a70b01d | 1934 | } |
e8f2240a | 1935 | |
24f13b03 ILT |
1936 | /* How gross. We turn off SEC_HAS_CONTENTS for the input symbol extension |
1937 | sections to keep the generic ELF/BFD code from trying to do anything | |
1938 | with them. We have to undo that hack temporarily so that we can read | |
1939 | in the contents with the generic code. */ | |
1940 | symextn_sec->flags |= SEC_HAS_CONTENTS; | |
1941 | if (bfd_get_section_contents (input_bfd, symextn_sec, contents, | |
1942 | 0, symextn_sec->_raw_size) == false) | |
3a70b01d | 1943 | { |
24f13b03 ILT |
1944 | symextn_sec->flags &= ~SEC_HAS_CONTENTS; |
1945 | free (contents); | |
1946 | return false; | |
3a70b01d KR |
1947 | } |
1948 | ||
24f13b03 ILT |
1949 | /* Gross. Turn off SEC_HAS_CONTENTS for the input symbol extension |
1950 | sections (see above). */ | |
1951 | symextn_sec->flags &= ~SEC_HAS_CONTENTS; | |
e8f2240a | 1952 | |
24f13b03 ILT |
1953 | n_entries = symextn_sec->_raw_size / sizeof (symextn_entry); |
1954 | for (i = 0; i < n_entries; i++) | |
e8f2240a | 1955 | { |
24f13b03 ILT |
1956 | symextn_entry entry = contents[i]; |
1957 | unsigned int value = ELF32_PARISC_SX_VAL (entry); | |
1958 | unsigned int type = ELF32_PARISC_SX_TYPE (entry); | |
1959 | struct elf32_hppa_args_hash_entry *args_hash; | |
e8f2240a | 1960 | |
24f13b03 | 1961 | switch (type) |
e8f2240a | 1962 | { |
24f13b03 ILT |
1963 | case PARISC_SXT_NULL: |
1964 | break; | |
e8f2240a | 1965 | |
24f13b03 ILT |
1966 | case PARISC_SXT_SYMNDX: |
1967 | if (value >= symtab_hdr->sh_size / sizeof (Elf32_External_Sym)) | |
80425e6c | 1968 | { |
24f13b03 ILT |
1969 | bfd_set_error (bfd_error_bad_value); |
1970 | free (contents); | |
1971 | return false; | |
80425e6c | 1972 | } |
24f13b03 ILT |
1973 | current_index = value; |
1974 | break; | |
e8f2240a | 1975 | |
24f13b03 ILT |
1976 | case PARISC_SXT_ARG_RELOC: |
1977 | if (current_index < symtab_hdr->sh_info | |
1978 | && do_locals) | |
326e32d7 | 1979 | { |
24f13b03 ILT |
1980 | Elf_Internal_Shdr *hdr; |
1981 | char *new_name; | |
1982 | const char *sym_name; | |
1983 | asection *sym_sec; | |
1984 | unsigned int len; | |
1985 | ||
1986 | hdr = elf_elfsections (input_bfd)[local_syms[current_index].st_shndx]; | |
1987 | sym_sec = hdr->bfd_section; | |
1988 | sym_name = elf_string_from_elf_section (input_bfd, | |
1989 | symtab_hdr->sh_link, | |
1990 | local_syms[current_index].st_name); | |
1991 | len = strlen (sym_name) + 10; | |
1992 | new_name = malloc (len); | |
1993 | if (new_name == NULL) | |
1994 | { | |
1995 | bfd_set_error (bfd_error_no_memory); | |
1996 | free (contents); | |
1997 | return false; | |
1998 | } | |
1999 | strcpy (new_name, sym_name); | |
2000 | sprintf (new_name + len - 10, "_%08x", (int)sym_sec); | |
2001 | ||
2002 | /* This is a global symbol with argument location info. | |
2003 | We need to enter it into the hash table. */ | |
2004 | args_hash = elf32_hppa_args_hash_lookup (args_hash_table, | |
2005 | new_name, true, | |
2006 | true); | |
2007 | free (new_name); | |
2008 | if (args_hash == NULL) | |
2009 | { | |
2010 | free (contents); | |
2011 | return false; | |
2012 | } | |
2013 | args_hash->arg_bits = value; | |
2014 | break; | |
326e32d7 | 2015 | } |
24f13b03 ILT |
2016 | else if (current_index >= symtab_hdr->sh_info |
2017 | && do_globals) | |
e8f2240a | 2018 | { |
24f13b03 ILT |
2019 | struct elf_link_hash_entry *h; |
2020 | ||
2021 | current_index -= symtab_hdr->sh_info; | |
2022 | h = elf_sym_hashes(input_bfd)[current_index]; | |
2023 | /* This is a global symbol with argument location | |
2024 | information. We need to enter it into the hash table. */ | |
2025 | args_hash = elf32_hppa_args_hash_lookup (args_hash_table, | |
2026 | h->root.root.string, | |
2027 | true, true); | |
2028 | if (args_hash == NULL) | |
e8f2240a | 2029 | { |
24f13b03 ILT |
2030 | bfd_set_error (bfd_error_bad_value); |
2031 | free (contents); | |
2032 | return false; | |
e8f2240a | 2033 | } |
24f13b03 ILT |
2034 | args_hash->arg_bits = value; |
2035 | break; | |
e8f2240a | 2036 | } |
24f13b03 ILT |
2037 | else |
2038 | break; | |
e8f2240a | 2039 | |
24f13b03 ILT |
2040 | default: |
2041 | bfd_set_error (bfd_error_bad_value); | |
2042 | free (contents); | |
2043 | return false; | |
e8f2240a KR |
2044 | } |
2045 | } | |
24f13b03 ILT |
2046 | free (contents); |
2047 | return true; | |
e8f2240a KR |
2048 | } |
2049 | ||
24f13b03 ILT |
2050 | /* Undo the generic ELF code's subtraction of section->vma from the |
2051 | value of each external symbol. */ | |
d9ad93bc | 2052 | |
24f13b03 ILT |
2053 | static boolean |
2054 | elf32_hppa_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
2055 | bfd *abfd; | |
2056 | struct bfd_link_info *info; | |
2057 | const Elf_Internal_Sym *sym; | |
2058 | const char **namep; | |
2059 | flagword *flagsp; | |
2060 | asection **secp; | |
2061 | bfd_vma *valp; | |
d9ad93bc | 2062 | { |
24f13b03 ILT |
2063 | *valp += (*secp)->vma; |
2064 | return true; | |
e8f2240a KR |
2065 | } |
2066 | ||
24f13b03 ILT |
2067 | /* Determine the name of the stub needed to perform a call assuming the |
2068 | argument relocation bits for caller and callee are in CALLER and CALLEE | |
2069 | for a call from LOCATION to DESTINATION. Copy the name into STUB_NAME. */ | |
e08b9ad7 | 2070 | |
24f13b03 ILT |
2071 | static void |
2072 | elf32_hppa_name_of_stub (caller, callee, location, destination, stub_name) | |
2073 | unsigned int caller, callee; | |
2074 | bfd_vma location, destination; | |
2075 | char *stub_name; | |
e8f2240a | 2076 | { |
24f13b03 | 2077 | arg_reloc_type arg_reloc_types[5]; |
e08b9ad7 | 2078 | |
24f13b03 | 2079 | if (elf32_hppa_arg_reloc_needed (caller, callee, arg_reloc_types)) |
e8f2240a | 2080 | { |
24f13b03 ILT |
2081 | arg_reloc_location i; |
2082 | /* Fill in the basic template. */ | |
2083 | strcpy (stub_name, "__XX_XX_XX_XX_XX_stub_"); | |
e8f2240a | 2084 | |
24f13b03 ILT |
2085 | /* Now fix the specifics. */ |
2086 | for (i = ARG0; i <= RET; i++) | |
2087 | switch (arg_reloc_types[i]) | |
2088 | { | |
2089 | case NO: | |
2090 | stub_name[3 * i + 2] = 'N'; | |
2091 | stub_name[3 * i + 3] = 'O'; | |
2092 | break; | |
2093 | case GF: | |
2094 | stub_name[3 * i + 2] = 'G'; | |
2095 | stub_name[3 * i + 3] = 'F'; | |
2096 | break; | |
2097 | case FG: | |
2098 | stub_name[3 * i + 2] = 'F'; | |
2099 | stub_name[3 * i + 3] = 'G'; | |
2100 | break; | |
2101 | case GD: | |
2102 | stub_name[3 * i + 2] = 'G'; | |
2103 | stub_name[3 * i + 3] = 'D'; | |
2104 | break; | |
2105 | case DG: | |
2106 | stub_name[3 * i + 2] = 'D'; | |
2107 | stub_name[3 * i + 3] = 'G'; | |
2108 | break; | |
2109 | } | |
e08b9ad7 | 2110 | } |
e08b9ad7 | 2111 | else |
24f13b03 ILT |
2112 | strcpy (stub_name, "_____long_branch_stub_"); |
2113 | } | |
e08b9ad7 | 2114 | |
24f13b03 ILT |
2115 | /* Determine if an argument relocation stub is needed to perform a |
2116 | call assuming the argument relocation bits for caller and callee | |
2117 | are in CALLER and CALLEE. Place the type of relocations (if any) | |
2118 | into stub_types_p. */ | |
e8f2240a | 2119 | |
24f13b03 ILT |
2120 | static boolean |
2121 | elf32_hppa_arg_reloc_needed (caller, callee, stub_types) | |
2122 | unsigned int caller, callee; | |
2123 | arg_reloc_type stub_types[5]; | |
2124 | { | |
2125 | /* Special case for no relocations. */ | |
2126 | if (caller == 0 || callee == 0) | |
2127 | return 0; | |
3a70b01d KR |
2128 | else |
2129 | { | |
24f13b03 ILT |
2130 | arg_location caller_loc[5]; |
2131 | arg_location callee_loc[5]; | |
2132 | ||
2133 | /* Extract the location information for the argument and return | |
2134 | value on both the caller and callee sides. */ | |
2135 | caller_loc[ARG0] = EXTRACT_ARBITS (caller, ARG0); | |
2136 | callee_loc[ARG0] = EXTRACT_ARBITS (callee, ARG0); | |
2137 | caller_loc[ARG1] = EXTRACT_ARBITS (caller, ARG1); | |
2138 | callee_loc[ARG1] = EXTRACT_ARBITS (callee, ARG1); | |
2139 | caller_loc[ARG2] = EXTRACT_ARBITS (caller, ARG2); | |
2140 | callee_loc[ARG2] = EXTRACT_ARBITS (callee, ARG2); | |
2141 | caller_loc[ARG3] = EXTRACT_ARBITS (caller, ARG3); | |
2142 | callee_loc[ARG3] = EXTRACT_ARBITS (callee, ARG3); | |
2143 | caller_loc[RET] = EXTRACT_ARBITS (caller, RET); | |
2144 | callee_loc[RET] = EXTRACT_ARBITS (callee, RET); | |
2145 | ||
2146 | /* Check some special combinations. This is necessary to | |
2147 | deal with double precision FP arguments. */ | |
2148 | if (caller_loc[ARG0] == AR_FU || caller_loc[ARG1] == AR_FU) | |
9783e04a | 2149 | { |
24f13b03 ILT |
2150 | caller_loc[ARG0] = AR_FPDBL1; |
2151 | caller_loc[ARG1] = AR_NO; | |
9783e04a | 2152 | } |
24f13b03 | 2153 | if (caller_loc[ARG2] == AR_FU || caller_loc[ARG3] == AR_FU) |
9783e04a | 2154 | { |
24f13b03 ILT |
2155 | caller_loc[ARG2] = AR_FPDBL2; |
2156 | caller_loc[ARG3] = AR_NO; | |
9783e04a | 2157 | } |
24f13b03 | 2158 | if (callee_loc[ARG0] == AR_FU || callee_loc[ARG1] == AR_FU) |
6e58a4e5 | 2159 | { |
24f13b03 ILT |
2160 | callee_loc[ARG0] = AR_FPDBL1; |
2161 | callee_loc[ARG1] = AR_NO; | |
6e58a4e5 | 2162 | } |
24f13b03 | 2163 | if (callee_loc[ARG2] == AR_FU || callee_loc[ARG3] == AR_FU) |
3a70b01d | 2164 | { |
24f13b03 ILT |
2165 | callee_loc[ARG2] = AR_FPDBL2; |
2166 | callee_loc[ARG3] = AR_NO; | |
2167 | } | |
e8f2240a | 2168 | |
24f13b03 ILT |
2169 | /* Now look up any relocation needed for each argument and the |
2170 | return value. */ | |
2171 | stub_types[ARG0] = arg_mismatches[caller_loc[ARG0]][callee_loc[ARG0]]; | |
2172 | stub_types[ARG1] = arg_mismatches[caller_loc[ARG1]][callee_loc[ARG1]]; | |
2173 | stub_types[ARG2] = arg_mismatches[caller_loc[ARG2]][callee_loc[ARG2]]; | |
2174 | stub_types[ARG3] = arg_mismatches[caller_loc[ARG3]][callee_loc[ARG3]]; | |
2175 | stub_types[RET] = ret_mismatches[caller_loc[RET]][callee_loc[RET]]; | |
2176 | ||
2177 | return (stub_types[ARG0] != NO | |
2178 | || stub_types[ARG1] != NO | |
2179 | || stub_types[ARG2] != NO | |
2180 | || stub_types[ARG3] != NO | |
2181 | || stub_types[RET] != NO); | |
2182 | } | |
2183 | } | |
4861ac76 | 2184 | |
24f13b03 ILT |
2185 | /* Compute the size of the stub needed to call from LOCATION to DESTINATION |
2186 | (a function named SYM_NAME), with argument relocation bits CALLER and | |
2187 | CALLEE. Return zero if no stub is needed to perform such a call. */ | |
e08b9ad7 | 2188 | |
24f13b03 ILT |
2189 | static unsigned int |
2190 | elf32_hppa_size_of_stub (callee, caller, location, destination, sym_name) | |
2191 | unsigned int callee, caller; | |
2192 | bfd_vma location, destination; | |
2193 | const char *sym_name; | |
2194 | { | |
2195 | arg_reloc_type arg_reloc_types[5]; | |
2196 | ||
2197 | /* Determine if a long branch or argument relocation stub is needed. | |
2198 | If an argument relocation stub is needed, the relocation will be | |
2199 | stored into arg_reloc_types. */ | |
2200 | if (!(((int)(location - destination) > 0x3ffff) | |
2201 | || ((int)(location - destination) < (int)0xfffc0000) | |
2202 | || elf32_hppa_arg_reloc_needed (caller, callee, arg_reloc_types))) | |
2203 | return 0; | |
e08b9ad7 | 2204 | |
24f13b03 ILT |
2205 | /* Some kind of stub is needed. Determine how big it needs to be. |
2206 | First check for argument relocation stubs as they also handle | |
2207 | long calls. Then check for long calls to millicode and finally | |
2208 | the normal long calls. */ | |
2209 | if (arg_reloc_types[ARG0] != NO | |
2210 | || arg_reloc_types[ARG1] != NO | |
2211 | || arg_reloc_types[ARG2] != NO | |
2212 | || arg_reloc_types[ARG3] != NO | |
2213 | || arg_reloc_types[RET] != NO) | |
2214 | { | |
2215 | /* Some kind of argument relocation stub is needed. */ | |
2216 | unsigned int len = 16; | |
2217 | arg_reloc_location i; | |
2218 | ||
2219 | /* Each GR or FG relocation takes 2 insns, each GD or DG | |
2220 | relocation takes 3 insns. Plus 4 more insns for the | |
2221 | RP adjustment, ldil & (be | ble) and copy. */ | |
2222 | for (i = ARG0; i <= RET; i++) | |
2223 | switch (arg_reloc_types[i]) | |
2224 | { | |
2225 | case GF: | |
2226 | case FG: | |
2227 | len += 8; | |
2228 | break; | |
e08b9ad7 | 2229 | |
24f13b03 ILT |
2230 | case GD: |
2231 | case DG: | |
2232 | len += 12; | |
2233 | break; | |
e08b9ad7 | 2234 | |
24f13b03 ILT |
2235 | default: |
2236 | break; | |
2237 | } | |
2238 | ||
2239 | /* Extra instructions are needed if we're relocating a return value. */ | |
2240 | if (arg_reloc_types[RET] != NO) | |
2241 | len += 12; | |
2242 | ||
2243 | return len; | |
2244 | } | |
2245 | else if (!strncmp ("$$", sym_name, 2) | |
2246 | && strcmp ("$$dyncall", sym_name)) | |
2247 | return 12; | |
2248 | else | |
2249 | return 16; | |
2250 | } | |
e08b9ad7 | 2251 | |
24f13b03 ILT |
2252 | /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY. |
2253 | IN_ARGS contains the stub BFD and link info pointers. */ | |
2254 | ||
2255 | static boolean | |
2256 | elf32_hppa_build_one_stub (gen_entry, in_args) | |
2257 | struct bfd_hash_entry *gen_entry; | |
2258 | PTR in_args; | |
2259 | { | |
2260 | void **args = (void **)in_args; | |
2261 | bfd *stub_bfd = (bfd *)args[0]; | |
2262 | struct bfd_link_info *info = (struct bfd_link_info *)args[1]; | |
2263 | struct elf32_hppa_stub_hash_entry *entry; | |
2264 | struct elf32_hppa_stub_hash_table *stub_hash_table; | |
2265 | bfd_byte *loc; | |
2266 | symvalue sym_value; | |
2267 | const char *sym_name; | |
2268 | ||
2269 | /* Initialize pointers to the stub hash table, the particular entry we | |
2270 | are building a stub for, and where (in memory) we should place the stub | |
2271 | instructions. */ | |
2272 | entry = (struct elf32_hppa_stub_hash_entry *)gen_entry; | |
2273 | stub_hash_table = elf32_hppa_hash_table(info)->stub_hash_table; | |
2274 | loc = stub_hash_table->location; | |
2275 | ||
2276 | /* Make a note of the offset within the stubs for this entry. */ | |
2277 | entry->offset = stub_hash_table->offset; | |
2278 | ||
2279 | /* The symbol's name starts at offset 22. */ | |
2280 | sym_name = entry->root.string + 22; | |
2281 | ||
2282 | sym_value = (entry->target_value | |
2283 | + entry->target_section->output_offset | |
2284 | + entry->target_section->output_section->vma); | |
2285 | ||
2286 | if (strncmp ("_____long_branch_stub_", entry->root.string, 22)) | |
2287 | { | |
2288 | /* This must be an argument or return value relocation stub. */ | |
2289 | unsigned long insn; | |
2290 | arg_reloc_location i; | |
2291 | bfd_byte *begin_loc = loc; | |
2292 | ||
2293 | /* First the return pointer adjustment. Depending on exact calling | |
2294 | sequence this instruction may be skipped. */ | |
2295 | bfd_put_32 (stub_bfd, LDO_M4_R31_R31, loc); | |
2296 | loc += 4; | |
2297 | ||
2298 | /* If we are relocating a return value, then we're going to have | |
2299 | to return into the stub. So we have to save off the user's | |
2300 | return pointer into the stack at RP'. */ | |
2301 | if (strncmp (entry->root.string + 14, "NO", 2)) | |
2302 | { | |
2303 | bfd_put_32 (stub_bfd, STW_R31_M8R30, loc); | |
2304 | loc += 4; | |
e08b9ad7 JL |
2305 | } |
2306 | ||
24f13b03 ILT |
2307 | /* Iterate over the argument relocations, emitting instructions |
2308 | to move them around as necessary. */ | |
2309 | for (i = ARG0; i <= ARG3; i++) | |
4861ac76 | 2310 | { |
24f13b03 | 2311 | if (!strncmp (entry->root.string + 3 * i + 2, "GF", 2)) |
e08b9ad7 | 2312 | { |
24f13b03 ILT |
2313 | bfd_put_32 (stub_bfd, STW_ARG_M16R30 | ((26 - i) << 16), loc); |
2314 | bfd_put_32 (stub_bfd, FLDW_M16R30_FARG | (4 + i), loc + 4); | |
2315 | loc += 8; | |
e08b9ad7 | 2316 | } |
24f13b03 | 2317 | else if (!strncmp (entry->root.string + 3 * i + 2, "FG", 2)) |
e08b9ad7 | 2318 | { |
24f13b03 ILT |
2319 | bfd_put_32 (stub_bfd, FSTW_FARG_M16R30 | (4 + i), loc); |
2320 | bfd_put_32 (stub_bfd, LDW_M16R30_ARG | ((26 - i) << 16), loc + 4); | |
2321 | loc += 8; | |
e08b9ad7 | 2322 | } |
24f13b03 | 2323 | else if (!strncmp (entry->root.string + 3 * i + 2, "GD", 2)) |
e8f2240a | 2324 | { |
24f13b03 ILT |
2325 | bfd_put_32 (stub_bfd, STW_ARG_M12R30 | ((26 - i) << 16), loc); |
2326 | bfd_put_32 (stub_bfd, STW_ARG_M16R30 | ((25 - i) << 16), loc + 4); | |
2327 | bfd_put_32 (stub_bfd, FLDD_M16R30_FARG | (5 + i), loc + 8); | |
2328 | loc += 12; | |
e08b9ad7 | 2329 | } |
24f13b03 | 2330 | else if (!strncmp (entry->root.string + 3 * i + 2, "DG", 2)) |
e08b9ad7 | 2331 | { |
24f13b03 ILT |
2332 | bfd_put_32 (stub_bfd, FSTD_FARG_M16R30 | (5 + i), loc); |
2333 | bfd_put_32 (stub_bfd, LDW_M12R30_ARG | ((26 - i) << 16), loc + 4); | |
2334 | bfd_put_32 (stub_bfd, LDW_M16R30_ARG | ((25 - i) << 16), loc + 8); | |
2335 | loc += 12; | |
e8f2240a | 2336 | } |
e8f2240a | 2337 | } |
e8f2240a | 2338 | |
24f13b03 ILT |
2339 | /* Load the high bits of the target address into %r1. */ |
2340 | insn = hppa_rebuild_insn (stub_bfd, LDIL_R1, | |
2341 | hppa_field_adjust (sym_value, 0, e_lrsel), 21); | |
2342 | bfd_put_32 (stub_bfd, insn, loc); | |
2343 | loc += 4; | |
e8f2240a | 2344 | |
24f13b03 ILT |
2345 | /* If we are relocating a return value, then we're going to have |
2346 | to return into the stub, then perform the return value relocation. */ | |
2347 | if (strncmp (entry->root.string + 14, "NO", 2)) | |
e8f2240a | 2348 | { |
24f13b03 ILT |
2349 | /* To return to the stub we "ble" to the target and copy the return |
2350 | pointer from %r31 into %r2. */ | |
2351 | insn = hppa_rebuild_insn (stub_bfd, | |
2352 | BLE_SR4_R1, | |
2353 | hppa_field_adjust (sym_value, 0, | |
2354 | e_rrsel) >> 2, | |
2355 | 17); | |
2356 | bfd_put_32 (stub_bfd, insn, loc); | |
2357 | bfd_put_32 (stub_bfd, COPY_R31_R2, loc + 4); | |
2358 | ||
2359 | /* Reload the return pointer for our caller from the stack. */ | |
2360 | bfd_put_32 (stub_bfd, LDW_M8R30_R31, loc + 8); | |
2361 | loc += 12; | |
2362 | ||
2363 | /* Perform the return value relocation. */ | |
2364 | if (!strncmp (entry->root.string + 14, "GF", 2)) | |
e8f2240a | 2365 | { |
24f13b03 ILT |
2366 | bfd_put_32 (stub_bfd, STW_ARG_M16R30 | (28 << 16), loc); |
2367 | bfd_put_32 (stub_bfd, FLDW_M16R30_FARG | 4, loc + 4); | |
2368 | loc += 8; | |
e8f2240a | 2369 | } |
24f13b03 | 2370 | else if (!strncmp (entry->root.string + 14, "FG", 2)) |
e8f2240a | 2371 | { |
24f13b03 ILT |
2372 | bfd_put_32 (stub_bfd, FSTW_FARG_M16R30 | 4, loc); |
2373 | bfd_put_32 (stub_bfd, LDW_M16R30_ARG | (28 << 16), loc + 4); | |
2374 | loc += 8; | |
e8f2240a | 2375 | } |
24f13b03 | 2376 | else if (!strncmp (entry->root.string + 2, "GD", 2)) |
e8f2240a | 2377 | { |
24f13b03 ILT |
2378 | bfd_put_32 (stub_bfd, STW_ARG_M12R30 | (28 << 16), loc); |
2379 | bfd_put_32 (stub_bfd, STW_ARG_M16R30 | (29 << 16), loc + 4); | |
2380 | bfd_put_32 (stub_bfd, FLDD_M16R30_FARG | 4, loc + 8); | |
2381 | loc += 12; | |
e8f2240a | 2382 | } |
24f13b03 | 2383 | else if (!strncmp (entry->root.string + 2, "DG", 2)) |
e8f2240a | 2384 | { |
24f13b03 ILT |
2385 | bfd_put_32 (stub_bfd, FSTD_FARG_M16R30 | 4, loc); |
2386 | bfd_put_32 (stub_bfd, LDW_M12R30_ARG | (28 << 16), loc + 4); | |
2387 | bfd_put_32 (stub_bfd, LDW_M16R30_ARG | (29 << 16), loc + 8); | |
2388 | loc += 12; | |
e8f2240a | 2389 | } |
24f13b03 ILT |
2390 | /* Branch back to the user's code now. */ |
2391 | bfd_put_32 (stub_bfd, BV_N_0_R31, loc); | |
2392 | loc += 4; | |
2393 | } | |
2394 | else | |
2395 | { | |
2396 | /* No return value relocation, so we can simply "be" to the | |
2397 | target and copy out return pointer into %r2. */ | |
2398 | insn = hppa_rebuild_insn (stub_bfd, BE_SR4_R1, | |
2399 | hppa_field_adjust (sym_value, 0, | |
2400 | e_rrsel) >> 2, 17); | |
2401 | bfd_put_32 (stub_bfd, insn, loc); | |
2402 | bfd_put_32 (stub_bfd, COPY_R31_R2, loc + 4); | |
2403 | loc += 8; | |
2404 | } | |
e8f2240a | 2405 | |
24f13b03 ILT |
2406 | /* Update the location and offsets. */ |
2407 | stub_hash_table->location += (loc - begin_loc); | |
2408 | stub_hash_table->offset += (loc - begin_loc); | |
2409 | } | |
2410 | else | |
2411 | { | |
2412 | /* Create one of two variant long branch stubs. One for $$dyncall and | |
2413 | normal calls, the other for calls to millicode. */ | |
2414 | unsigned long insn; | |
2415 | int millicode_call = 0; | |
2416 | ||
2417 | if (!strncmp ("$$", sym_name, 2) && strcmp ("$$dyncall", sym_name)) | |
2418 | millicode_call = 1; | |
2419 | ||
2420 | /* First the return pointer adjustment. Depending on exact calling | |
2421 | sequence this instruction may be skipped. */ | |
2422 | bfd_put_32 (stub_bfd, LDO_M4_R31_R31, loc); | |
2423 | ||
2424 | /* The next two instructions are the long branch itself. A long branch | |
2425 | is formed with "ldil" loading the upper bits of the target address | |
2426 | into a register, then branching with "be" which adds in the lower bits. | |
2427 | Long branches to millicode nullify the delay slot of the "be". */ | |
2428 | insn = hppa_rebuild_insn (stub_bfd, LDIL_R1, | |
2429 | hppa_field_adjust (sym_value, 0, e_lrsel), 21); | |
2430 | bfd_put_32 (stub_bfd, insn, loc + 4); | |
2431 | insn = hppa_rebuild_insn (stub_bfd, BE_SR4_R1 | (millicode_call ? 2 : 0), | |
2432 | hppa_field_adjust (sym_value, 0, e_rrsel) >> 2, | |
2433 | 17); | |
2434 | bfd_put_32 (stub_bfd, insn, loc + 8); | |
2435 | ||
2436 | if (!millicode_call) | |
2437 | { | |
2438 | /* The sequence to call this stub places the return pointer into %r31, | |
2439 | the final target expects the return pointer in %r2, so copy the | |
2440 | return pointer into the proper register. */ | |
2441 | bfd_put_32 (stub_bfd, COPY_R31_R2, loc + 12); | |
2442 | ||
2443 | /* Update the location and offsets. */ | |
2444 | stub_hash_table->location += 16; | |
2445 | stub_hash_table->offset += 16; | |
e8f2240a | 2446 | } |
24f13b03 ILT |
2447 | else |
2448 | { | |
2449 | /* Update the location and offsets. */ | |
2450 | stub_hash_table->location += 12; | |
2451 | stub_hash_table->offset += 12; | |
2452 | } | |
2453 | ||
e8f2240a | 2454 | } |
24f13b03 | 2455 | return true; |
e8f2240a KR |
2456 | } |
2457 | ||
24f13b03 | 2458 | /* External entry points for sizing and building linker stubs. */ |
d9ad93bc | 2459 | |
24f13b03 ILT |
2460 | /* Build all the stubs associated with the current output file. The |
2461 | stubs are kept in a hash table attached to the main linker hash | |
2462 | table. This is called via hppaelf_finish in the linker. */ | |
e08b9ad7 | 2463 | |
24f13b03 ILT |
2464 | boolean |
2465 | elf32_hppa_build_stubs (stub_bfd, info) | |
2466 | bfd *stub_bfd; | |
2467 | struct bfd_link_info *info; | |
d9ad93bc | 2468 | { |
24f13b03 ILT |
2469 | /* The stub BFD only has one section. */ |
2470 | asection *stub_sec = stub_bfd->sections; | |
2471 | struct elf32_hppa_stub_hash_table *table; | |
2472 | unsigned int size; | |
2473 | void *args[2]; | |
2474 | ||
2475 | /* So we can pass both the BFD for the stubs and the link info | |
2476 | structure to the routine which actually builds stubs. */ | |
2477 | args[0] = stub_bfd; | |
2478 | args[1] = info; | |
2479 | ||
2480 | /* Allocate memory to hold the linker stubs. */ | |
2481 | size = bfd_section_size (stub_bfd, stub_sec); | |
2482 | stub_sec->contents = (unsigned char *) bfd_zalloc (stub_bfd, size); | |
2483 | if (stub_sec->contents == NULL) | |
2484 | { | |
2485 | bfd_set_error (bfd_error_no_memory); | |
2486 | return false; | |
2487 | } | |
2488 | table = elf32_hppa_hash_table(info)->stub_hash_table; | |
2489 | table->location = stub_sec->contents; | |
d9ad93bc | 2490 | |
24f13b03 ILT |
2491 | /* Build the stubs as directed by the stub hash table. */ |
2492 | elf32_hppa_stub_hash_traverse (table, elf32_hppa_build_one_stub, args); | |
d9ad93bc | 2493 | |
24f13b03 | 2494 | return true; |
d9ad93bc KR |
2495 | } |
2496 | ||
24f13b03 | 2497 | /* Determine and set the size of the stub section for a final link. |
e08b9ad7 | 2498 | |
24f13b03 ILT |
2499 | The basic idea here is to examine all the relocations looking for |
2500 | PC-relative calls to a target that is unreachable with a "bl" | |
2501 | instruction or calls where the caller and callee disagree on the | |
2502 | location of their arguments or return value. */ | |
e8f2240a | 2503 | |
24f13b03 ILT |
2504 | boolean |
2505 | elf32_hppa_size_stubs (stub_bfd, output_bfd, link_info) | |
d9ad93bc | 2506 | bfd *stub_bfd; |
e8f2240a | 2507 | bfd *output_bfd; |
4991ebb9 | 2508 | struct bfd_link_info *link_info; |
e8f2240a | 2509 | { |
24f13b03 ILT |
2510 | bfd *input_bfd; |
2511 | asection *section, *stub_sec; | |
2512 | Elf_Internal_Shdr *symtab_hdr; | |
2513 | Elf_Internal_Sym *local_syms, *isym; | |
2514 | Elf32_External_Sym *ext_syms, *esym; | |
2515 | struct elf32_hppa_stub_hash_table *stub_hash_table = 0; | |
2516 | struct elf32_hppa_args_hash_table *args_hash_table = 0; | |
2517 | ||
2518 | /* Create and initialize the stub hash table. */ | |
2519 | stub_hash_table = ((struct elf32_hppa_stub_hash_table *) | |
2520 | malloc (sizeof (struct elf32_hppa_stub_hash_table))); | |
2521 | if (!stub_hash_table) | |
e8f2240a | 2522 | { |
24f13b03 ILT |
2523 | bfd_set_error (bfd_error_no_memory); |
2524 | goto error_return; | |
2525 | } | |
e08b9ad7 | 2526 | |
24f13b03 ILT |
2527 | if (!elf32_hppa_stub_hash_table_init (stub_hash_table, stub_bfd, |
2528 | elf32_hppa_stub_hash_newfunc)) | |
2529 | goto error_return; | |
4c85cbfa | 2530 | |
24f13b03 ILT |
2531 | /* Likewise for the argument location hash table. */ |
2532 | args_hash_table = ((struct elf32_hppa_args_hash_table *) | |
2533 | malloc (sizeof (struct elf32_hppa_args_hash_table))); | |
2534 | if (!args_hash_table) | |
2535 | { | |
2536 | bfd_set_error (bfd_error_no_memory); | |
2537 | goto error_return; | |
e8f2240a | 2538 | } |
e08b9ad7 | 2539 | |
24f13b03 ILT |
2540 | if (!elf32_hppa_args_hash_table_init (args_hash_table, |
2541 | elf32_hppa_args_hash_newfunc)) | |
2542 | goto error_return; | |
4c85cbfa | 2543 | |
24f13b03 ILT |
2544 | /* Attach the hash tables to the main hash table. */ |
2545 | elf32_hppa_hash_table(link_info)->stub_hash_table = stub_hash_table; | |
2546 | elf32_hppa_hash_table(link_info)->args_hash_table = args_hash_table; | |
d9ad93bc | 2547 | |
24f13b03 ILT |
2548 | /* Walk over all the input BFDs adding entries to the args hash table |
2549 | for all the external functions. */ | |
2550 | for (input_bfd = link_info->input_bfds; | |
2551 | input_bfd != NULL; | |
2552 | input_bfd = input_bfd->link_next) | |
d9ad93bc | 2553 | { |
24f13b03 ILT |
2554 | /* We'll need the symbol table in a second. */ |
2555 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2556 | if (symtab_hdr->sh_info == 0) | |
2557 | continue; | |
d9ad93bc | 2558 | |
24f13b03 ILT |
2559 | if (elf32_hppa_read_symext_info (input_bfd, symtab_hdr, args_hash_table, |
2560 | NULL, false, true) == false) | |
2561 | goto error_return; | |
d9ad93bc | 2562 | } |
4c85cbfa | 2563 | |
24f13b03 ILT |
2564 | /* Magic as we know the stub bfd only has one section. */ |
2565 | stub_sec = stub_bfd->sections; | |
7218bb04 | 2566 | |
24f13b03 ILT |
2567 | /* Now that we have argument location information for all the global |
2568 | functions we can start looking for stubs. */ | |
2569 | for (input_bfd = link_info->input_bfds; | |
2570 | input_bfd != NULL; | |
2571 | input_bfd = input_bfd->link_next) | |
e8f2240a | 2572 | { |
24f13b03 | 2573 | unsigned int i; |
4c85cbfa | 2574 | |
24f13b03 ILT |
2575 | /* We'll need the symbol table in a second. */ |
2576 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2577 | if (symtab_hdr->sh_info == 0) | |
2578 | continue; | |
d9ad93bc | 2579 | |
24f13b03 ILT |
2580 | /* We need an array of the local symbols attached to the input bfd. |
2581 | Unfortunately, we're going to have to read & swap them in. */ | |
2582 | local_syms | |
2583 | = (Elf_Internal_Sym *)malloc (symtab_hdr->sh_info | |
2584 | * sizeof (Elf_Internal_Sym)); | |
2585 | if (local_syms == NULL) | |
2586 | { | |
2587 | bfd_set_error (bfd_error_no_memory); | |
2588 | goto error_return; | |
2589 | } | |
e08b9ad7 | 2590 | |
24f13b03 ILT |
2591 | ext_syms |
2592 | = (Elf32_External_Sym *)malloc (symtab_hdr->sh_info | |
2593 | * sizeof (Elf32_External_Sym)); | |
2594 | if (ext_syms == NULL) | |
2595 | { | |
2596 | bfd_set_error (bfd_error_no_memory); | |
2597 | free (local_syms); | |
2598 | goto error_return; | |
2599 | } | |
d9ad93bc | 2600 | |
24f13b03 ILT |
2601 | if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 |
2602 | || bfd_read (ext_syms, 1, | |
2603 | (symtab_hdr->sh_info | |
2604 | * sizeof (Elf32_External_Sym)), input_bfd) | |
2605 | != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym))) | |
2606 | { | |
2607 | free (local_syms); | |
2608 | free (ext_syms); | |
2609 | goto error_return; | |
2610 | } | |
d9ad93bc | 2611 | |
24f13b03 ILT |
2612 | /* Swap the local symbols in. */ |
2613 | isym = local_syms; | |
2614 | esym = ext_syms; | |
2615 | for (i = 0; i < symtab_hdr->sh_info; i++, esym++, isym++) | |
2616 | bfd_elf32_swap_symbol_in (input_bfd, esym, isym); | |
d9ad93bc | 2617 | |
24f13b03 ILT |
2618 | /* Now we can free the external symbols. */ |
2619 | free (ext_syms); | |
d9ad93bc | 2620 | |
24f13b03 ILT |
2621 | if (elf32_hppa_read_symext_info (input_bfd, symtab_hdr, args_hash_table, |
2622 | local_syms, true, false) == false) | |
2623 | { | |
2624 | free (local_syms); | |
2625 | goto error_return; | |
2626 | } | |
d9ad93bc | 2627 | |
24f13b03 ILT |
2628 | /* If generating a relocateable output file, then we don't |
2629 | have to examine the relocs. */ | |
2630 | if (link_info->relocateable) | |
d9ad93bc | 2631 | { |
24f13b03 ILT |
2632 | free (local_syms); |
2633 | return true; | |
2634 | } | |
d9ad93bc | 2635 | |
24f13b03 ILT |
2636 | /* Walk over each section attached to the input bfd. */ |
2637 | for (section = input_bfd->sections; | |
2638 | section != NULL; | |
2639 | section = section->next) | |
2640 | { | |
2641 | Elf_Internal_Shdr *input_rel_hdr; | |
2642 | Elf32_External_Rela *external_relocs, *erelaend, *erela; | |
2643 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
2644 | ||
2645 | /* If there aren't any relocs, then there's nothing to do. */ | |
2646 | if ((section->flags & SEC_RELOC) == 0 | |
2647 | || section->reloc_count == 0) | |
2648 | continue; | |
2649 | ||
2650 | /* Allocate space for the external relocations. */ | |
2651 | external_relocs | |
2652 | = (Elf32_External_Rela *) malloc (section->reloc_count * sizeof (Elf32_External_Rela)); | |
2653 | if (external_relocs == NULL) | |
d9ad93bc | 2654 | { |
24f13b03 ILT |
2655 | bfd_set_error (bfd_error_no_memory); |
2656 | free (local_syms); | |
2657 | goto error_return; | |
d9ad93bc | 2658 | } |
d9ad93bc | 2659 | |
24f13b03 ILT |
2660 | /* Likewise for the internal relocations. */ |
2661 | internal_relocs | |
2662 | = (Elf_Internal_Rela *) malloc (section->reloc_count * sizeof (Elf_Internal_Rela)); | |
2663 | if (internal_relocs == NULL) | |
2664 | { | |
2665 | bfd_set_error (bfd_error_no_memory); | |
2666 | free (external_relocs); | |
2667 | free (local_syms); | |
2668 | goto error_return; | |
2669 | } | |
d9ad93bc | 2670 | |
24f13b03 ILT |
2671 | /* Read in the external relocs. */ |
2672 | input_rel_hdr = &elf_section_data (section)->rel_hdr; | |
2673 | if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0 | |
2674 | || bfd_read (external_relocs, 1, input_rel_hdr->sh_size, | |
2675 | input_bfd) != input_rel_hdr->sh_size) | |
2676 | { | |
2677 | free (external_relocs); | |
2678 | free (internal_relocs); | |
2679 | free (local_syms); | |
2680 | goto error_return; | |
2681 | } | |
d9ad93bc | 2682 | |
24f13b03 ILT |
2683 | /* Swap in the relocs. */ |
2684 | erela = external_relocs; | |
2685 | erelaend = erela + section->reloc_count; | |
2686 | irela = internal_relocs; | |
2687 | for (; erela < erelaend; erela++, irela++) | |
2688 | bfd_elf32_swap_reloca_in (input_bfd, erela, irela); | |
d9ad93bc | 2689 | |
24f13b03 ILT |
2690 | /* We're done with the external relocs, free them. */ |
2691 | free (external_relocs); | |
d9ad93bc | 2692 | |
24f13b03 ILT |
2693 | /* Now examine each relocation. */ |
2694 | irela = internal_relocs; | |
2695 | irelaend = irela + section->reloc_count; | |
2696 | for (; irela < irelaend; irela++) | |
d9ad93bc | 2697 | { |
24f13b03 ILT |
2698 | long r_type, callee_args, caller_args, r_index, size_of_stub; |
2699 | struct elf_link_hash_entry *hash; | |
2700 | struct elf32_hppa_stub_hash_entry *stub_hash; | |
2701 | struct elf32_hppa_args_hash_entry *args_hash; | |
2702 | Elf_Internal_Sym *sym; | |
2703 | asection *sym_sec; | |
2704 | const char *sym_name; | |
2705 | symvalue sym_value; | |
2706 | bfd_vma location, destination; | |
2707 | char *new_name = NULL; | |
2708 | ||
2709 | r_type = ELF32_R_TYPE (irela->r_info); | |
2710 | r_index = ELF32_R_SYM (irela->r_info); | |
2711 | ||
2712 | if (r_type < 0 || r_type >= (int) R_PARISC_UNIMPLEMENTED) | |
2713 | { | |
2714 | bfd_set_error (bfd_error_bad_value); | |
2715 | free (internal_relocs); | |
2716 | free (local_syms); | |
2717 | goto error_return; | |
2718 | } | |
2719 | ||
2720 | /* Only look for stubs on call instructions or plabel | |
2721 | references. */ | |
2722 | if (r_type != R_PARISC_PCREL17F | |
2723 | && r_type != R_PARISC_PLABEL32 | |
2724 | && r_type != R_PARISC_PLABEL21L | |
2725 | && r_type != R_PARISC_PLABEL14R) | |
2726 | continue; | |
2727 | ||
2728 | /* Now determine the call target, its name, value, section | |
2729 | and argument relocation bits. */ | |
2730 | hash = NULL; | |
2731 | sym = NULL; | |
2732 | sym_sec = NULL; | |
2733 | if (r_index < symtab_hdr->sh_info) | |
d9ad93bc | 2734 | { |
24f13b03 ILT |
2735 | /* It's a local symbol. */ |
2736 | Elf_Internal_Shdr *hdr; | |
2737 | ||
2738 | sym = local_syms + r_index; | |
2739 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
2740 | sym_sec = hdr->bfd_section; | |
2741 | sym_name = elf_string_from_elf_section (input_bfd, | |
2742 | symtab_hdr->sh_link, | |
2743 | sym->st_name); | |
2744 | sym_value = (ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
2745 | ? 0 : sym->st_value); | |
2746 | destination = (sym_value | |
2747 | + sym_sec->output_offset | |
2748 | + sym_sec->output_section->vma); | |
2749 | ||
2750 | /* Tack on an ID so we can uniquely identify this local | |
2751 | symbol in the stub or arg info hash tables. */ | |
2752 | new_name = malloc (strlen (sym_name) + 10); | |
2753 | if (new_name == 0) | |
d9ad93bc | 2754 | { |
24f13b03 ILT |
2755 | bfd_set_error (bfd_error_bad_value); |
2756 | free (internal_relocs); | |
2757 | free (local_syms); | |
2758 | goto error_return; | |
d9ad93bc | 2759 | } |
24f13b03 ILT |
2760 | sprintf (new_name, "%s_%08x", sym_name, (int)sym_sec); |
2761 | sym_name = new_name; | |
d9ad93bc | 2762 | } |
24f13b03 | 2763 | else |
d9ad93bc | 2764 | { |
24f13b03 ILT |
2765 | /* It's an external symbol. */ |
2766 | long index; | |
2767 | ||
2768 | index = r_index - symtab_hdr->sh_info; | |
2769 | hash = elf_sym_hashes (input_bfd)[index]; | |
2770 | if (hash->root.type == bfd_link_hash_defined) | |
2771 | { | |
2772 | sym_sec = hash->root.u.def.section; | |
2773 | sym_name = hash->root.root.string; | |
2774 | sym_value = hash->root.u.def.value; | |
2775 | destination = (sym_value | |
2776 | + sym_sec->output_offset | |
2777 | + sym_sec->output_section->vma); | |
2778 | } | |
2779 | else | |
2780 | { | |
2781 | bfd_set_error (bfd_error_bad_value); | |
2782 | free (internal_relocs); | |
2783 | free (local_syms); | |
2784 | goto error_return; | |
2785 | } | |
d9ad93bc KR |
2786 | } |
2787 | ||
24f13b03 ILT |
2788 | args_hash = elf32_hppa_args_hash_lookup (args_hash_table, |
2789 | sym_name, false, false); | |
d9ad93bc | 2790 | |
24f13b03 ILT |
2791 | /* Get both caller and callee argument information. */ |
2792 | if (args_hash == NULL) | |
2793 | callee_args = 0; | |
d9ad93bc | 2794 | else |
24f13b03 ILT |
2795 | callee_args = args_hash->arg_bits; |
2796 | ||
2797 | /* For calls get the caller's bits from the addend of | |
2798 | the call relocation. For PLABELS the caller's bits | |
2799 | are assumed to have all args & return values in general | |
2800 | registers (0x155). */ | |
2801 | if (r_type == R_PARISC_PCREL17F) | |
2802 | caller_args = HPPA_R_ARG_RELOC (irela->r_addend); | |
2803 | else | |
2804 | caller_args = 0x155; | |
2805 | ||
2806 | /* Now determine where the call point is. */ | |
2807 | location = (section->output_offset | |
2808 | + section->output_section->vma | |
2809 | + irela->r_offset); | |
2810 | ||
2811 | /* We only care about the destination for PCREL function | |
2812 | calls (eg. we don't care for PLABELS). */ | |
2813 | if (r_type != R_PARISC_PCREL17F) | |
2814 | location = destination; | |
2815 | ||
2816 | /* Determine what (if any) linker stub is needed and its | |
2817 | size (in bytes). */ | |
2818 | size_of_stub = elf32_hppa_size_of_stub (callee_args, | |
2819 | caller_args, | |
2820 | location, | |
2821 | destination, | |
2822 | sym_name); | |
2823 | if (size_of_stub != 0) | |
2824 | { | |
2825 | char *stub_name; | |
2826 | unsigned int len; | |
d9ad93bc | 2827 | |
24f13b03 ILT |
2828 | /* Get the name of this stub. */ |
2829 | len = strlen (sym_name); | |
2830 | len += 23; | |
d9ad93bc | 2831 | |
24f13b03 ILT |
2832 | stub_name = malloc (len); |
2833 | if (!stub_name) | |
2834 | { | |
2835 | bfd_set_error (bfd_error_no_memory); | |
d9ad93bc | 2836 | |
24f13b03 ILT |
2837 | /* Because sym_name was mallocd above for local |
2838 | symbols. */ | |
2839 | if (r_index < symtab_hdr->sh_info) | |
2840 | free (new_name); | |
d9ad93bc | 2841 | |
24f13b03 ILT |
2842 | free (internal_relocs); |
2843 | free (local_syms); | |
2844 | goto error_return; | |
2845 | } | |
2846 | elf32_hppa_name_of_stub (caller_args, callee_args, | |
2847 | location, destination, stub_name); | |
2848 | strcat (stub_name + 22, sym_name); | |
2849 | ||
2850 | /* Because sym_name was malloced above for local symbols. */ | |
2851 | if (r_index < symtab_hdr->sh_info) | |
2852 | free (new_name); | |
2853 | ||
2854 | stub_hash | |
2855 | = elf32_hppa_stub_hash_lookup (stub_hash_table, stub_name, | |
2856 | false, false); | |
2857 | if (stub_hash != NULL) | |
2858 | { | |
2859 | /* The proper stub has already been created, nothing | |
2860 | else to do. */ | |
2861 | free (stub_name); | |
2862 | } | |
2863 | else | |
2864 | { | |
2865 | bfd_set_section_size (stub_bfd, stub_sec, | |
2866 | (bfd_section_size (stub_bfd, | |
2867 | stub_sec) | |
2868 | + size_of_stub)); | |
2869 | ||
2870 | /* Enter this entry into the linker stub hash table. */ | |
2871 | stub_hash | |
2872 | = elf32_hppa_stub_hash_lookup (stub_hash_table, | |
2873 | stub_name, true, true); | |
2874 | if (stub_hash == NULL) | |
2875 | { | |
2876 | bfd_set_error (bfd_error_no_memory); | |
2877 | free (stub_name); | |
2878 | free (internal_relocs); | |
2879 | free (local_syms); | |
2880 | goto error_return; | |
2881 | } | |
d9ad93bc | 2882 | |
24f13b03 ILT |
2883 | /* We'll need these to determine the address that the |
2884 | stub will branch to. */ | |
2885 | stub_hash->target_value = sym_value; | |
2886 | stub_hash->target_section = sym_sec; | |
2887 | } | |
2888 | free (stub_name); | |
2889 | } | |
2890 | } | |
2891 | /* We're done with the internal relocs, free them. */ | |
2892 | free (internal_relocs); | |
2893 | } | |
2894 | /* We're done with the local symbols, free them. */ | |
2895 | free (local_syms); | |
7218bb04 | 2896 | } |
24f13b03 | 2897 | return true; |
7218bb04 | 2898 | |
24f13b03 ILT |
2899 | error_return: |
2900 | /* Return gracefully, avoiding dangling references to the hash tables. */ | |
2901 | if (stub_hash_table) | |
d9ad93bc | 2902 | { |
24f13b03 ILT |
2903 | elf32_hppa_hash_table(link_info)->stub_hash_table = NULL; |
2904 | free (stub_hash_table); | |
d9ad93bc | 2905 | } |
24f13b03 | 2906 | if (args_hash_table) |
7218bb04 | 2907 | { |
24f13b03 ILT |
2908 | elf32_hppa_hash_table(link_info)->args_hash_table = NULL; |
2909 | free (args_hash_table); | |
7218bb04 | 2910 | } |
d9ad93bc | 2911 | return false; |
8ddd7ab3 | 2912 | } |
4c85cbfa | 2913 | |
24f13b03 ILT |
2914 | /* Misc BFD support code. */ |
2915 | #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup | |
25057836 | 2916 | #define bfd_elf32_bfd_is_local_label hppa_elf_is_local_label |
d9ad93bc | 2917 | |
24f13b03 ILT |
2918 | /* Symbol extension stuff. */ |
2919 | #define bfd_elf32_set_section_contents elf32_hppa_set_section_contents | |
2920 | #define elf_backend_symbol_table_processing \ | |
2921 | elf32_hppa_backend_symbol_table_processing | |
459ae909 JL |
2922 | #define elf_backend_begin_write_processing \ |
2923 | elf32_hppa_backend_begin_write_processing | |
2924 | #define elf_backend_final_write_processing \ | |
2925 | elf32_hppa_backend_final_write_processing | |
e08b9ad7 | 2926 | |
24f13b03 ILT |
2927 | /* Stuff for the BFD linker. */ |
2928 | #define elf_backend_relocate_section elf32_hppa_relocate_section | |
2929 | #define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook | |
2930 | #define elf_backend_link_output_symbol_hook \ | |
2931 | elf32_hppa_link_output_symbol_hook | |
2932 | #define bfd_elf32_bfd_link_hash_table_create \ | |
2933 | elf32_hppa_link_hash_table_create | |
2934 | ||
e8f2240a | 2935 | #define TARGET_BIG_SYM bfd_elf32_hppa_vec |
8ddd7ab3 KR |
2936 | #define TARGET_BIG_NAME "elf32-hppa" |
2937 | #define ELF_ARCH bfd_arch_hppa | |
459ae909 | 2938 | #define ELF_MACHINE_CODE EM_PARISC |
3a70b01d | 2939 | #define ELF_MAXPAGESIZE 0x1000 |
8ddd7ab3 KR |
2940 | |
2941 | #include "elf32-target.h" |