1 /* bfd back-end for HP PA-RISC SOM objects.
2 Copyright (C) 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
4 Contributed by the Center for Software Science at the
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
26 #if defined (HOST_HPPAHPUX) || defined (HOST_HPPABSD)
33 #include <sys/types.h>
34 #include <sys/param.h>
37 #include <machine/reg.h>
38 #include <sys/user.h> /* After a.out.h */
42 /* Magic not defined in standard HP-UX header files until 8.0 */
44 #ifndef CPU_PA_RISC1_0
45 #define CPU_PA_RISC1_0 0x20B
46 #endif /* CPU_PA_RISC1_0 */
48 #ifndef CPU_PA_RISC1_1
49 #define CPU_PA_RISC1_1 0x210
50 #endif /* CPU_PA_RISC1_1 */
52 #ifndef _PA_RISC1_0_ID
53 #define _PA_RISC1_0_ID CPU_PA_RISC1_0
54 #endif /* _PA_RISC1_0_ID */
56 #ifndef _PA_RISC1_1_ID
57 #define _PA_RISC1_1_ID CPU_PA_RISC1_1
58 #endif /* _PA_RISC1_1_ID */
60 #ifndef _PA_RISC_MAXID
61 #define _PA_RISC_MAXID 0x2FF
62 #endif /* _PA_RISC_MAXID */
65 #define _PA_RISC_ID(__m_num) \
66 (((__m_num) == _PA_RISC1_0_ID) || \
67 ((__m_num) >= _PA_RISC1_1_ID && (__m_num) <= _PA_RISC_MAXID))
68 #endif /* _PA_RISC_ID */
70 /* Size (in chars) of the temporary buffers used during fixup and string
73 #define SOM_TMP_BUFSIZE 8192
76 /* SOM allows any one of the four previous relocations to be reused
77 with a "R_PREV_FIXUP" relocation entry. Since R_PREV_FIXUP
78 relocations are always a single byte, using a R_PREV_FIXUP instead
79 of some multi-byte relocation makes object files smaller.
81 Note one side effect of using a R_PREV_FIXUP is the relocation that
82 is being repeated moves to the front of the queue. */
89 /* This fully describes the symbol types which may be attached to
90 an EXPORT or IMPORT directive. Only SOM uses this formation
91 (ELF has no need for it). */
99 SYMBOL_TYPE_MILLICODE,
101 SYMBOL_TYPE_PRI_PROG,
102 SYMBOL_TYPE_SEC_PROG,
105 /* Forward declarations */
107 static boolean som_mkobject PARAMS ((bfd *));
108 static bfd_target * som_object_setup PARAMS ((bfd *,
110 struct som_exec_auxhdr *));
111 static asection * make_unique_section PARAMS ((bfd *, CONST char *, int));
112 static boolean setup_sections PARAMS ((bfd *, struct header *));
113 static bfd_target * som_object_p PARAMS ((bfd *));
114 static boolean som_write_object_contents PARAMS ((bfd *));
115 static boolean som_slurp_string_table PARAMS ((bfd *));
116 static unsigned int som_slurp_symbol_table PARAMS ((bfd *));
117 static unsigned int som_get_symtab_upper_bound PARAMS ((bfd *));
118 static unsigned int som_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
119 arelent **, asymbol **));
120 static unsigned int som_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
121 static unsigned int som_get_symtab PARAMS ((bfd *, asymbol **));
122 static asymbol * som_make_empty_symbol PARAMS ((bfd *));
123 static void som_print_symbol PARAMS ((bfd *, PTR,
124 asymbol *, bfd_print_symbol_type));
125 static boolean som_new_section_hook PARAMS ((bfd *, asection *));
126 static boolean som_set_section_contents PARAMS ((bfd *, sec_ptr, PTR,
127 file_ptr, bfd_size_type));
128 static boolean som_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
130 static boolean som_find_nearest_line PARAMS ((bfd *, asection *,
135 static void som_get_symbol_info PARAMS ((bfd *, asymbol *, symbol_info *));
136 static asection * som_section_from_subspace_index PARAMS ((bfd *,
138 static int log2 PARAMS ((unsigned int));
139 static bfd_reloc_status_type hppa_som_reloc PARAMS ((bfd *, arelent *,
142 static void som_initialize_reloc_queue PARAMS ((struct reloc_queue *));
143 static void som_reloc_queue_insert PARAMS ((unsigned char *, unsigned int,
144 struct reloc_queue *));
145 static void som_reloc_queue_fix PARAMS ((struct reloc_queue *, unsigned int));
146 static int som_reloc_queue_find PARAMS ((unsigned char *, unsigned int,
147 struct reloc_queue *));
148 static unsigned char * try_prev_fixup PARAMS ((bfd *, int *, unsigned char *,
150 struct reloc_queue *));
152 static unsigned char * som_reloc_skip PARAMS ((bfd *, unsigned int,
153 unsigned char *, unsigned int *,
154 struct reloc_queue *));
155 static unsigned char * som_reloc_addend PARAMS ((bfd *, int, unsigned char *,
157 struct reloc_queue *));
158 static unsigned char * som_reloc_call PARAMS ((bfd *, unsigned char *,
161 struct reloc_queue *));
162 static unsigned long som_count_spaces PARAMS ((bfd *));
163 static unsigned long som_count_subspaces PARAMS ((bfd *));
164 static int compare_syms PARAMS ((asymbol **, asymbol **));
165 static unsigned long som_compute_checksum PARAMS ((bfd *));
166 static boolean som_prep_headers PARAMS ((bfd *));
167 static int som_sizeof_headers PARAMS ((bfd *, boolean));
168 static boolean som_write_headers PARAMS ((bfd *));
169 static boolean som_build_and_write_symbol_table PARAMS ((bfd *));
170 static void som_prep_for_fixups PARAMS ((bfd *, asymbol **, unsigned long));
171 static boolean som_write_fixups PARAMS ((bfd *, unsigned long, unsigned int *));
172 static boolean som_write_space_strings PARAMS ((bfd *, unsigned long,
174 static boolean som_write_symbol_strings PARAMS ((bfd *, unsigned long,
175 asymbol **, unsigned int,
178 static reloc_howto_type som_hppa_howto_table[] =
180 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
181 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
182 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
183 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
184 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
185 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
186 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
187 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
188 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
189 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
190 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
191 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
192 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
193 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
194 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
195 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
196 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
197 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
198 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
199 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
200 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
201 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
202 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
203 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
204 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
205 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
206 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
207 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
208 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
209 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
210 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
211 {R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
212 {R_ZEROES, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ZEROES"},
213 {R_ZEROES, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ZEROES"},
214 {R_UNINIT, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_UNINIT"},
215 {R_UNINIT, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_UNINIT"},
216 {R_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RELOCATION"},
217 {R_DATA_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DATA_ONE_SYMBOL"},
218 {R_DATA_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DATA_ONE_SYMBOL"},
219 {R_DATA_PLABEL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DATA_PLABEL"},
220 {R_DATA_PLABEL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DATA_PLABEL"},
221 {R_SPACE_REF, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_SPACE_REF"},
222 {R_REPEATED_INIT, 0, 0, 32, false, 0, 0, hppa_som_reloc, "REPEATED_INIT"},
223 {R_REPEATED_INIT, 0, 0, 32, false, 0, 0, hppa_som_reloc, "REPEATED_INIT"},
224 {R_REPEATED_INIT, 0, 0, 32, false, 0, 0, hppa_som_reloc, "REPEATED_INIT"},
225 {R_REPEATED_INIT, 0, 0, 32, false, 0, 0, hppa_som_reloc, "REPEATED_INIT"},
226 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
227 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
228 {R_PCREL_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PCREL_CALL"},
229 {R_PCREL_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PCREL_CALL"},
230 {R_PCREL_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PCREL_CALL"},
231 {R_PCREL_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PCREL_CALL"},
232 {R_PCREL_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PCREL_CALL"},
233 {R_PCREL_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PCREL_CALL"},
234 {R_PCREL_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PCREL_CALL"},
235 {R_PCREL_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PCREL_CALL"},
236 {R_PCREL_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PCREL_CALL"},
237 {R_PCREL_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PCREL_CALL"},
238 {R_PCREL_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PCREL_CALL"},
239 {R_PCREL_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PCREL_CALL"},
240 {R_PCREL_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PCREL_CALL"},
241 {R_PCREL_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PCREL_CALL"},
242 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
243 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
244 {R_ABS_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ABS_CALL"},
245 {R_ABS_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ABS_CALL"},
246 {R_ABS_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ABS_CALL"},
247 {R_ABS_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ABS_CALL"},
248 {R_ABS_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ABS_CALL"},
249 {R_ABS_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ABS_CALL"},
250 {R_ABS_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ABS_CALL"},
251 {R_ABS_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ABS_CALL"},
252 {R_ABS_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ABS_CALL"},
253 {R_ABS_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ABS_CALL"},
254 {R_ABS_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ABS_CALL"},
255 {R_ABS_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ABS_CALL"},
256 {R_ABS_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ABS_CALL"},
257 {R_ABS_CALL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ABS_CALL"},
258 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
259 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
260 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
261 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
262 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
263 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
264 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
265 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
266 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
267 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
268 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
269 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
270 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
271 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
272 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
273 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
274 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
275 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
276 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
277 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
278 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
279 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
280 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
281 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
282 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
283 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
284 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
285 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
286 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
287 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
288 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
289 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
290 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
291 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
292 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
293 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
294 {R_DP_RELATIVE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DP_RELATIVE"},
295 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
296 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
297 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
298 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
299 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
300 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
301 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
302 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
303 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
304 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
305 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
306 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
307 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
308 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
309 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
310 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
311 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
312 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
313 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
314 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
315 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
316 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
317 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
318 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
319 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
320 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
321 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
322 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
323 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
324 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
325 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
326 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
327 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
328 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
329 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
330 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
331 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
332 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
333 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
334 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
335 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
336 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
337 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
338 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
339 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
340 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
341 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
342 {R_CODE_ONE_SYMBOL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_ONE_SYMBOL"},
343 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
344 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
345 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
346 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
347 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
348 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
349 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
350 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
351 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
352 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
353 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
354 {R_MILLI_REL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_MILLI_REL"},
355 {R_MILLI_REL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_MILLI_REL"},
356 {R_CODE_PLABEL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_PLABEL"},
357 {R_CODE_PLABEL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_PLABEL"},
358 {R_BREAKPOINT, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_BREAKPOINT"},
359 {R_ENTRY, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ENTRY"},
360 {R_ENTRY, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ENTRY"},
361 {R_ALT_ENTRY, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_ALT_ENTRY"},
362 {R_EXIT, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_EXIT"},
363 {R_BEGIN_TRY, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_BEGIN_TRY"},
364 {R_END_TRY, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_END_TRY"},
365 {R_END_TRY, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_END_TRY"},
366 {R_BEGIN_BRTAB, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_BEGIN_BRTAB"},
367 {R_END_BRTAB, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_END_BRTAB"},
368 {R_STATEMENT, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_STATEMENT"},
369 {R_STATEMENT, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_STATEMENT"},
370 {R_STATEMENT, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_STATEMENT"},
371 {R_DATA_EXPR, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DATA_EXPR"},
372 {R_CODE_EXPR, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_CODE_EXPR"},
373 {R_FSEL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_FSEL"},
374 {R_LSEL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_LSEL"},
375 {R_RSEL, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RSEL"},
376 {R_N_MODE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_N_MODE"},
377 {R_S_MODE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_S_MODE"},
378 {R_D_MODE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_D_MODE"},
379 {R_R_MODE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_R_MODE"},
380 {R_DATA_OVERRIDE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DATA_OVERRIDE"},
381 {R_DATA_OVERRIDE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DATA_OVERRIDE"},
382 {R_DATA_OVERRIDE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DATA_OVERRIDE"},
383 {R_DATA_OVERRIDE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DATA_OVERRIDE"},
384 {R_DATA_OVERRIDE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DATA_OVERRIDE"},
385 {R_DATA_OVERRIDE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DATA_OVERRIDE"},
386 {R_TRANSLATED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_TRANSLATED"},
387 {R_STATEMENT, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_STATEMENT"},
388 {R_STATEMENT, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_STATEMENT"},
389 {R_STATEMENT, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_STATEMENT"},
390 {R_COMP1, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_COMP1"},
391 {R_COMP2, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_COMP2"},
392 {R_COMP3, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_COMP3"},
393 {R_PREV_FIXUP, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PREV_FIXUP"},
394 {R_PREV_FIXUP, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PREV_FIXUP"},
395 {R_PREV_FIXUP, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PREV_FIXUP"},
396 {R_PREV_FIXUP, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_PREV_FIXUP"},
397 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
398 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
399 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
400 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
401 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
402 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
403 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
404 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
405 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
406 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
407 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
408 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
409 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
410 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
411 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
412 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
413 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
414 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
415 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
416 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
417 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
418 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
419 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
420 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
421 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
422 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
423 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
424 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
425 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
426 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
427 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
428 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
429 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
430 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
431 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
432 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
433 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
434 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
435 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
436 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"},
437 {R_RESERVED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_RESERVED"}};
440 /* Initialize the SOM relocation queue. By definition the queue holds
441 the last four multibyte fixups. */
444 som_initialize_reloc_queue (queue)
445 struct reloc_queue *queue;
447 queue[0].reloc = NULL;
449 queue[1].reloc = NULL;
451 queue[2].reloc = NULL;
453 queue[3].reloc = NULL;
457 /* Insert a new relocation into the relocation queue. */
460 som_reloc_queue_insert (p, size, queue)
463 struct reloc_queue *queue;
465 queue[3].reloc = queue[2].reloc;
466 queue[3].size = queue[2].size;
467 queue[2].reloc = queue[1].reloc;
468 queue[2].size = queue[1].size;
469 queue[1].reloc = queue[0].reloc;
470 queue[1].size = queue[0].size;
472 queue[0].size = size;
475 /* When an entry in the relocation queue is reused, the entry moves
476 to the front of the queue. */
479 som_reloc_queue_fix (queue, index)
480 struct reloc_queue *queue;
488 unsigned char *tmp1 = queue[0].reloc;
489 unsigned int tmp2 = queue[0].size;
490 queue[0].reloc = queue[1].reloc;
491 queue[0].size = queue[1].size;
492 queue[1].reloc = tmp1;
493 queue[1].size = tmp2;
499 unsigned char *tmp1 = queue[0].reloc;
500 unsigned int tmp2 = queue[0].size;
501 queue[0].reloc = queue[2].reloc;
502 queue[0].size = queue[2].size;
503 queue[2].reloc = queue[1].reloc;
504 queue[2].size = queue[1].size;
505 queue[1].reloc = tmp1;
506 queue[1].size = tmp2;
512 unsigned char *tmp1 = queue[0].reloc;
513 unsigned int tmp2 = queue[0].size;
514 queue[0].reloc = queue[3].reloc;
515 queue[0].size = queue[3].size;
516 queue[3].reloc = queue[2].reloc;
517 queue[3].size = queue[2].size;
518 queue[2].reloc = queue[1].reloc;
519 queue[2].size = queue[1].size;
520 queue[1].reloc = tmp1;
521 queue[1].size = tmp2;
527 /* Search for a particular relocation in the relocation queue. */
530 som_reloc_queue_find (p, size, queue)
533 struct reloc_queue *queue;
535 if (!bcmp (p, queue[0].reloc, size)
536 && size == queue[0].size)
538 if (!bcmp (p, queue[1].reloc, size)
539 && size == queue[1].size)
541 if (!bcmp (p, queue[2].reloc, size)
542 && size == queue[2].size)
544 if (!bcmp (p, queue[3].reloc, size)
545 && size == queue[3].size)
550 static unsigned char *
551 try_prev_fixup (abfd, subspace_reloc_sizep, p, size, queue)
553 int *subspace_reloc_sizep;
556 struct reloc_queue *queue;
558 int queue_index = som_reloc_queue_find (p, size, queue);
560 if (queue_index != -1)
562 /* Found this in a previous fixup. Undo the fixup we
563 just built and use R_PREV_FIXUP instead. We saved
564 a total of size - 1 bytes in the fixup stream. */
565 bfd_put_8 (abfd, R_PREV_FIXUP + queue_index, p);
567 *subspace_reloc_sizep += 1;
568 som_reloc_queue_fix (queue, queue_index);
572 som_reloc_queue_insert (p, size, queue);
573 *subspace_reloc_sizep += size;
579 /* Emit the proper R_NO_RELOCATION fixups to map the next SKIP
580 bytes without any relocation. Update the size of the subspace
581 relocation stream via SUBSPACE_RELOC_SIZE_P; also return the
582 current pointer into the relocation stream. */
584 static unsigned char *
585 som_reloc_skip (abfd, skip, p, subspace_reloc_sizep, queue)
589 unsigned int *subspace_reloc_sizep;
590 struct reloc_queue *queue;
592 /* Use a 4 byte R_NO_RELOCATION entry with a maximal value
593 then R_PREV_FIXUPs to get the difference down to a
595 if (skip >= 0x1000000)
598 bfd_put_8 (abfd, R_NO_RELOCATION + 31, p);
599 bfd_put_8 (abfd, 0xff, p + 1);
600 bfd_put_16 (abfd, 0xffff, p + 2);
601 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue);
602 while (skip >= 0x1000000)
605 bfd_put_8 (abfd, R_PREV_FIXUP, p);
607 *subspace_reloc_sizep += 1;
608 /* No need to adjust queue here since we are repeating the
609 most recent fixup. */
613 /* The difference must be less than 0x1000000. Use one
614 more R_NO_RELOCATION entry to get to the right difference. */
615 if ((skip & 3) == 0 && skip <= 0xc0000 && skip > 0)
617 /* Difference can be handled in a simple single-byte
618 R_NO_RELOCATION entry. */
621 bfd_put_8 (abfd, R_NO_RELOCATION + (skip >> 2) - 1, p);
622 *subspace_reloc_sizep += 1;
625 /* Handle it with a two byte R_NO_RELOCATION entry. */
626 else if (skip <= 0x1000)
628 bfd_put_8 (abfd, R_NO_RELOCATION + 24 + (((skip >> 2) - 1) >> 8), p);
629 bfd_put_8 (abfd, (skip >> 2) - 1, p + 1);
630 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue);
632 /* Handle it with a three byte R_NO_RELOCATION entry. */
635 bfd_put_8 (abfd, R_NO_RELOCATION + 28 + (((skip >> 2) - 1) >> 16), p);
636 bfd_put_16 (abfd, (skip >> 2) - 1, p + 1);
637 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue);
640 /* Ugh. Punt and use a 4 byte entry. */
643 bfd_put_8 (abfd, R_NO_RELOCATION + 31, p);
644 bfd_put_8 (abfd, skip >> 16, p + 1);
645 bfd_put_16 (abfd, skip, p + 2);
646 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue);
651 /* Emit the proper R_DATA_OVERRIDE fixups to handle a nonzero addend
652 from a BFD relocation. Update the size of the subspace relocation
653 stream via SUBSPACE_RELOC_SIZE_P; also return the current pointer
654 into the relocation stream. */
656 static unsigned char *
657 som_reloc_addend (abfd, addend, p, subspace_reloc_sizep, queue)
661 unsigned int *subspace_reloc_sizep;
662 struct reloc_queue *queue;
664 if ((unsigned)(addend) + 0x80 < 0x100)
666 bfd_put_8 (abfd, R_DATA_OVERRIDE + 1, p);
667 bfd_put_8 (abfd, addend, p + 1);
668 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue);
670 else if ((unsigned) (addend) + 0x8000 < 0x10000)
672 bfd_put_8 (abfd, R_DATA_OVERRIDE + 2, p);
673 bfd_put_16 (abfd, addend, p + 1);
674 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue);
676 else if ((unsigned) (addend) + 0x800000 < 0x1000000)
678 bfd_put_8 (abfd, R_DATA_OVERRIDE + 3, p);
679 bfd_put_8 (abfd, addend >> 16, p + 1);
680 bfd_put_16 (abfd, addend, p + 2);
681 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue);
685 bfd_put_8 (abfd, R_DATA_OVERRIDE + 4, p);
686 bfd_put_32 (abfd, addend, p + 1);
687 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 5, queue);
692 /* Handle a single function call relocation. */
694 static unsigned char *
695 som_reloc_call (abfd, p, subspace_reloc_sizep, bfd_reloc, sym_num, queue)
698 unsigned int *subspace_reloc_sizep;
701 struct reloc_queue *queue;
703 int arg_bits = HPPA_R_ARG_RELOC (bfd_reloc->addend);
704 int rtn_bits = arg_bits & 0x3;
707 /* You'll never believe all this is necessary to handle relocations
708 for function calls. Having to compute and pack the argument
709 relocation bits is the real nightmare.
711 If you're interested in how this works, just forget it. You really
712 do not want to know about this braindamage. */
714 /* First see if this can be done with a "simple" relocation. Simple
715 relocations have a symbol number < 0x100 and have simple encodings
716 of argument relocations. */
730 case 1 << 8 | 1 << 6:
731 case 1 << 8 | 1 << 6 | 1:
734 case 1 << 8 | 1 << 6 | 1 << 4:
735 case 1 << 8 | 1 << 6 | 1 << 4 | 1:
738 case 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2:
739 case 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2 | 1:
743 /* Not one of the easy encodings. This will have to be
744 handled by the more complex code below. */
750 /* Account for the return value too. */
754 /* Emit a 2 byte relocation. Then see if it can be handled
755 with a relocation which is already in the relocation queue. */
756 bfd_put_8 (abfd, bfd_reloc->howto->type + type, p);
757 bfd_put_8 (abfd, sym_num, p + 1);
758 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue);
763 /* If this could not be handled with a simple relocation, then do a hard
764 one. Hard relocations occur if the symbol number was too high or if
765 the encoding of argument relocation bits is too complex. */
768 /* Don't ask about these magic sequences. I took them straight
769 from gas-1.36 which took them from the a.out man page. */
771 if ((arg_bits >> 6 & 0xf) == 0xe)
774 type += (3 * (arg_bits >> 8 & 3) + (arg_bits >> 6 & 3)) * 40;
775 if ((arg_bits >> 2 & 0xf) == 0xe)
778 type += (3 * (arg_bits >> 4 & 3) + (arg_bits >> 2 & 3)) * 4;
780 /* Output the first two bytes of the relocation. These describe
781 the length of the relocation and encoding style. */
782 bfd_put_8 (abfd, bfd_reloc->howto->type + 10
783 + 2 * (sym_num >= 0x100) + (type >= 0x100),
785 bfd_put_8 (abfd, type, p + 1);
787 /* Now output the symbol index and see if this bizarre relocation
788 just happened to be in the relocation queue. */
791 bfd_put_8 (abfd, sym_num, p + 2);
792 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue);
796 bfd_put_8 (abfd, sym_num >> 16, p + 2);
797 bfd_put_16 (abfd, sym_num, p + 3);
798 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 5, queue);
805 /* Return the logarithm of X, base 2, considering X unsigned.
806 Abort if X is not a power of two -- this should never happen (FIXME:
807 It will happen on corrupt executables. GDB should give an error, not
808 a coredump, in that case). */
816 /* Test for 0 or a power of 2. */
817 if (x == 0 || x != (x & -x))
820 while ((x >>= 1) != 0)
825 static bfd_reloc_status_type
826 hppa_som_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd)
828 arelent *reloc_entry;
831 asection *input_section;
836 reloc_entry->address += input_section->output_offset;
842 /* Given a generic HPPA relocation type, the instruction format,
843 and a field selector, return an appropriate SOM reloation.
845 FIXME. Need to handle %RR, %LR and the like as field selectors.
846 These will need to generate multiple SOM relocations. */
849 hppa_som_gen_reloc_type (abfd, base_type, format, field)
855 int *final_type, **final_types;
857 final_types = (int **) bfd_alloc_by_size_t (abfd, sizeof (int *) * 2);
858 final_type = (int *) bfd_alloc_by_size_t (abfd, sizeof (int));
861 final_types[0] = final_type;
862 final_types[1] = NULL;
864 /* Default to the basic relocation passed in. */
865 *final_type = base_type;
870 /* PLABELs get their own relocation type. */
875 /* A PLABEL relocation that has a size of 32 bits must
876 be a R_DATA_PLABEL. All others are R_CODE_PLABELs. */
878 *final_type = R_DATA_PLABEL;
880 *final_type = R_CODE_PLABEL;
882 /* A relocatoin in the data space is always a full 32bits. */
883 else if (format == 32)
884 *final_type = R_DATA_ONE_SYMBOL;
889 /* More PLABEL special cases. */
893 *final_type = R_DATA_PLABEL;
897 case R_HPPA_ABS_CALL:
898 case R_HPPA_PCREL_CALL:
900 case R_HPPA_COMPLEX_PCREL_CALL:
901 case R_HPPA_COMPLEX_ABS_CALL:
902 /* Right now we can default all these. */
908 /* Return the address of the correct entry in the PA SOM relocation
911 static reloc_howto_type *
912 som_bfd_reloc_type_lookup (arch, code)
913 bfd_arch_info_type *arch;
914 bfd_reloc_code_real_type code;
916 if ((int) code < (int) R_NO_RELOCATION + 255)
918 BFD_ASSERT ((int) som_hppa_howto_table[(int) code].type == (int) code);
919 return &som_hppa_howto_table[(int) code];
922 return (reloc_howto_type *) 0;
925 /* Perform some initialization for an object. Save results of this
926 initialization in the BFD. */
929 som_object_setup (abfd, file_hdrp, aux_hdrp)
931 struct header *file_hdrp;
932 struct som_exec_auxhdr *aux_hdrp;
934 asection *text, *data, *bss;
936 /* som_mkobject will set bfd_error if som_mkobject fails. */
937 if (som_mkobject (abfd) != true)
940 /* Make the standard .text, .data, and .bss sections so that tools
941 which assume those names work (size for example). They will have
942 no contents, but the sizes and such will reflect those of the
943 $CODE$, $DATA$, and $BSS$ subspaces respectively.
945 FIXME: Should check return status from bfd_make_section calls below. */
947 text = bfd_make_section (abfd, ".text");
948 data = bfd_make_section (abfd, ".data");
949 bss = bfd_make_section (abfd, ".bss");
951 text->_raw_size = aux_hdrp->exec_tsize;
952 data->_raw_size = aux_hdrp->exec_dsize;
953 bss->_raw_size = aux_hdrp->exec_bsize;
955 text->flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_CODE);
956 data->flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS);
957 bss->flags = (SEC_ALLOC | SEC_IS_COMMON);
959 /* The virtual memory addresses of the sections */
960 text->vma = aux_hdrp->exec_tmem;
961 data->vma = aux_hdrp->exec_dmem;
962 bss->vma = aux_hdrp->exec_bfill;
964 /* The file offsets of the sections */
965 text->filepos = aux_hdrp->exec_tfile;
966 data->filepos = aux_hdrp->exec_dfile;
968 /* The file offsets of the relocation info */
969 text->rel_filepos = 0;
970 data->rel_filepos = 0;
972 /* Set BFD flags based on what information is available in the SOM. */
973 abfd->flags = NO_FLAGS;
974 if (! file_hdrp->entry_offset)
975 abfd->flags |= HAS_RELOC;
977 abfd->flags |= EXEC_P;
978 if (file_hdrp->symbol_total)
979 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
981 bfd_get_start_address (abfd) = aux_hdrp->exec_entry;
982 bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 0);
983 bfd_get_symcount (abfd) = file_hdrp->symbol_total;
985 /* Initialize the saved symbol table and string table to NULL.
986 Save important offsets and sizes from the SOM header into
988 obj_som_stringtab (abfd) = (char *) NULL;
989 obj_som_symtab (abfd) = (som_symbol_type *) NULL;
990 obj_som_stringtab_size (abfd) = file_hdrp->symbol_strings_size;
991 obj_som_sym_filepos (abfd) = file_hdrp->symbol_location;
992 obj_som_str_filepos (abfd) = file_hdrp->symbol_strings_location;
993 obj_som_reloc_filepos (abfd) = file_hdrp->fixup_request_location;
998 /* Create a new BFD section for NAME. If NAME already exists, then create a
999 new unique name, with NAME as the prefix. This exists because SOM .o files
1000 may have more than one $CODE$ subspace. */
1003 make_unique_section (abfd, name, num)
1012 sect = bfd_make_section (abfd, name);
1015 sprintf (altname, "%s-%d", name, num++);
1016 sect = bfd_make_section (abfd, altname);
1019 newname = bfd_alloc (abfd, strlen (sect->name) + 1);
1020 strcpy (newname, sect->name);
1022 sect->name = newname;
1026 /* Convert all of the space and subspace info into BFD sections. Each space
1027 contains a number of subspaces, which in turn describe the mapping between
1028 regions of the exec file, and the address space that the program runs in.
1029 BFD sections which correspond to spaces will overlap the sections for the
1030 associated subspaces. */
1033 setup_sections (abfd, file_hdr)
1035 struct header *file_hdr;
1037 char *space_strings;
1039 unsigned int total_subspaces = 0;
1041 /* First, read in space names */
1043 space_strings = alloca (file_hdr->space_strings_size);
1047 if (bfd_seek (abfd, file_hdr->space_strings_location, SEEK_SET) < 0)
1049 if (bfd_read (space_strings, 1, file_hdr->space_strings_size, abfd)
1050 != file_hdr->space_strings_size)
1053 /* Loop over all of the space dictionaries, building up sections */
1054 for (space_index = 0; space_index < file_hdr->space_total; space_index++)
1056 struct space_dictionary_record space;
1057 struct subspace_dictionary_record subspace, save_subspace;
1059 asection *space_asect;
1061 /* Read the space dictionary element */
1062 if (bfd_seek (abfd, file_hdr->space_location
1063 + space_index * sizeof space, SEEK_SET) < 0)
1065 if (bfd_read (&space, 1, sizeof space, abfd) != sizeof space)
1068 /* Setup the space name string */
1069 space.name.n_name = space.name.n_strx + space_strings;
1071 /* Make a section out of it */
1072 space_asect = make_unique_section (abfd, space.name.n_name, space_index);
1076 /* Now, read in the first subspace for this space */
1077 if (bfd_seek (abfd, file_hdr->subspace_location
1078 + space.subspace_index * sizeof subspace,
1081 if (bfd_read (&subspace, 1, sizeof subspace, abfd) != sizeof subspace)
1083 /* Seek back to the start of the subspaces for loop below */
1084 if (bfd_seek (abfd, file_hdr->subspace_location
1085 + space.subspace_index * sizeof subspace,
1089 /* Setup the start address and file loc from the first subspace record */
1090 space_asect->vma = subspace.subspace_start;
1091 space_asect->filepos = subspace.file_loc_init_value;
1092 space_asect->alignment_power = log2 (subspace.alignment);
1094 /* Initialize save_subspace so we can reliably determine if this
1095 loop placed any useful values into it. */
1096 bzero (&save_subspace, sizeof (struct subspace_dictionary_record));
1098 /* Loop over the rest of the subspaces, building up more sections */
1099 for (subspace_index = 0; subspace_index < space.subspace_quantity;
1102 asection *subspace_asect;
1104 /* Read in the next subspace */
1105 if (bfd_read (&subspace, 1, sizeof subspace, abfd)
1109 /* Setup the subspace name string */
1110 subspace.name.n_name = subspace.name.n_strx + space_strings;
1112 /* Make a section out of this subspace */
1113 subspace_asect = make_unique_section (abfd, subspace.name.n_name,
1114 space.subspace_index + subspace_index);
1116 if (!subspace_asect)
1119 /* Keep an easy mapping between subspaces and sections. */
1120 som_section_data (subspace_asect)->subspace_index
1121 = total_subspaces++;
1123 /* Set SEC_READONLY and SEC_CODE/SEC_DATA as specified
1124 by the access_control_bits in the subspace header. */
1125 switch (subspace.access_control_bits >> 4)
1127 /* Readonly data. */
1129 subspace_asect->flags |= SEC_DATA | SEC_READONLY;
1134 subspace_asect->flags |= SEC_DATA;
1137 /* Readonly code and the gateways.
1138 Gateways have other attributes which do not map
1139 into anything BFD knows about. */
1145 subspace_asect->flags |= SEC_CODE | SEC_READONLY;
1148 /* dynamic (writable) code. */
1150 subspace_asect->flags |= SEC_CODE;
1154 if (subspace.dup_common || subspace.is_common)
1155 subspace_asect->flags |= SEC_IS_COMMON;
1157 subspace_asect->flags |= SEC_HAS_CONTENTS;
1158 if (subspace.is_loadable)
1159 subspace_asect->flags |= SEC_ALLOC | SEC_LOAD;
1160 if (subspace.code_only)
1161 subspace_asect->flags |= SEC_CODE;
1163 /* This subspace has relocations.
1164 The fixup_request_quantity is a byte count for the number of
1165 entries in the relocation stream; it is not the actual number
1166 of relocations in the subspace. */
1167 if (subspace.fixup_request_quantity != 0)
1169 subspace_asect->flags |= SEC_RELOC;
1170 subspace_asect->rel_filepos = subspace.fixup_request_index;
1171 som_section_data (subspace_asect)->reloc_size
1172 = subspace.fixup_request_quantity;
1173 /* We can not determine this yet. When we read in the
1174 relocation table the correct value will be filled in. */
1175 subspace_asect->reloc_count = -1;
1178 /* Update save_subspace if appropriate. */
1179 if (subspace.file_loc_init_value > save_subspace.file_loc_init_value)
1180 save_subspace = subspace;
1182 subspace_asect->vma = subspace.subspace_start;
1183 subspace_asect->_cooked_size = subspace.subspace_length;
1184 subspace_asect->_raw_size = subspace.initialization_length;
1185 subspace_asect->alignment_power = log2 (subspace.alignment);
1186 subspace_asect->filepos = subspace.file_loc_init_value;
1189 /* Yow! there is no subspace within the space which actually
1190 has initialized information in it; this should never happen
1191 as far as I know. */
1192 if (!save_subspace.file_loc_init_value)
1195 /* Setup the sizes for the space section based upon the info in the
1196 last subspace of the space. */
1197 space_asect->_cooked_size = save_subspace.subspace_start
1198 - space_asect->vma + save_subspace.subspace_length;
1199 space_asect->_raw_size = save_subspace.file_loc_init_value
1200 - space_asect->filepos + save_subspace.initialization_length;
1205 /* Read in a SOM object and make it into a BFD. */
1211 struct header file_hdr;
1212 struct som_exec_auxhdr aux_hdr;
1214 if (bfd_read ((PTR) & file_hdr, 1, FILE_HDR_SIZE, abfd) != FILE_HDR_SIZE)
1216 bfd_error = system_call_error;
1220 if (!_PA_RISC_ID (file_hdr.system_id))
1222 bfd_error = wrong_format;
1226 switch (file_hdr.a_magic)
1243 bfd_error = wrong_format;
1247 if (file_hdr.version_id != VERSION_ID
1248 && file_hdr.version_id != NEW_VERSION_ID)
1250 bfd_error = wrong_format;
1254 /* If the aux_header_size field in the file header is zero, then this
1255 object is an incomplete executable (a .o file). Do not try to read
1256 a non-existant auxiliary header. */
1257 bzero (&aux_hdr, sizeof (struct som_exec_auxhdr));
1258 if (file_hdr.aux_header_size != 0)
1260 if (bfd_read ((PTR) & aux_hdr, 1, AUX_HDR_SIZE, abfd) != AUX_HDR_SIZE)
1262 bfd_error = wrong_format;
1267 if (!setup_sections (abfd, &file_hdr))
1269 /* setup_sections does not bubble up a bfd error code. */
1270 bfd_error = bad_value;
1274 /* This appears to be a valid SOM object. Do some initialization. */
1275 return som_object_setup (abfd, &file_hdr, &aux_hdr);
1278 /* Create a SOM object. */
1284 /* Allocate memory to hold backend information. */
1285 abfd->tdata.som_data = (struct som_data_struct *)
1286 bfd_zalloc (abfd, sizeof (struct som_data_struct));
1287 if (abfd->tdata.som_data == NULL)
1289 bfd_error = no_memory;
1292 obj_som_file_hdr (abfd) = bfd_zalloc (abfd, sizeof (struct header));
1293 if (obj_som_file_hdr (abfd) == NULL)
1296 bfd_error = no_memory;
1302 /* Initialize some information in the file header. This routine makes
1303 not attempt at doing the right thing for a full executable; it
1304 is only meant to handle relocatable objects. */
1307 som_prep_headers (abfd)
1310 struct header *file_hdr = obj_som_file_hdr (abfd);
1313 /* FIXME. This should really be conditional based on whether or not
1314 PA1.1 instructions/registers have been used. */
1315 file_hdr->system_id = HP9000S800_ID;
1317 /* FIXME. Only correct for building relocatable objects. */
1318 if (abfd->flags & EXEC_P)
1321 file_hdr->a_magic = RELOC_MAGIC;
1323 /* Only new format SOM is supported. */
1324 file_hdr->version_id = NEW_VERSION_ID;
1326 /* These fields are optional, and embedding timestamps is not always
1327 a wise thing to do, it makes comparing objects during a multi-stage
1328 bootstrap difficult. */
1329 file_hdr->file_time.secs = 0;
1330 file_hdr->file_time.nanosecs = 0;
1332 if (abfd->flags & EXEC_P)
1336 file_hdr->entry_space = 0;
1337 file_hdr->entry_subspace = 0;
1338 file_hdr->entry_offset = 0;
1341 /* FIXME. I do not know if we ever need to put anything other
1342 than zero in this field. */
1343 file_hdr->presumed_dp = 0;
1345 /* Now iterate over the sections translating information from
1346 BFD sections to SOM spaces/subspaces. */
1348 for (section = abfd->sections; section != NULL; section = section->next)
1350 /* Ignore anything which has not been marked as a space or
1352 if (som_section_data (section)->is_space == 0
1354 && som_section_data (section)->is_subspace == 0)
1357 if (som_section_data (section)->is_space)
1359 /* Set space attributes. Note most attributes of SOM spaces
1360 are set based on the subspaces it contains. */
1361 som_section_data (section)->space_dict.loader_fix_index = -1;
1362 som_section_data (section)->space_dict.init_pointer_index = -1;
1366 /* Set subspace attributes. Basic stuff is done here, additional
1367 attributes are filled in later as more information becomes
1369 if (section->flags & SEC_IS_COMMON)
1371 som_section_data (section)->subspace_dict.dup_common = 1;
1372 som_section_data (section)->subspace_dict.is_common = 1;
1375 if (section->flags & SEC_ALLOC)
1376 som_section_data (section)->subspace_dict.is_loadable = 1;
1378 if (section->flags & SEC_CODE)
1379 som_section_data (section)->subspace_dict.code_only = 1;
1381 som_section_data (section)->subspace_dict.subspace_start =
1383 som_section_data (section)->subspace_dict.subspace_length =
1384 bfd_section_size (abfd, section);
1385 som_section_data (section)->subspace_dict.initialization_length =
1386 bfd_section_size (abfd, section);
1387 som_section_data (section)->subspace_dict.alignment =
1388 1 << section->alignment_power;
1394 /* Count and return the number of spaces attached to the given BFD. */
1396 static unsigned long
1397 som_count_spaces (abfd)
1403 for (section = abfd->sections; section != NULL; section = section->next)
1404 count += som_section_data (section)->is_space;
1409 /* Count the number of subspaces attached to the given BFD. */
1411 static unsigned long
1412 som_count_subspaces (abfd)
1418 for (section = abfd->sections; section != NULL; section = section->next)
1419 count += som_section_data (section)->is_subspace;
1424 /* Return -1, 0, 1 indicating the relative ordering of sym1 and sym2.
1426 We desire symbols to be ordered starting with the symbol with the
1427 highest relocation count down to the symbol with the lowest relocation
1428 count. Doing so compacts the relocation stream. */
1431 compare_syms (sym1, sym2)
1436 unsigned int count1, count2;
1438 /* Get relocation count for each symbol. Note that the count
1439 is stored in the udata pointer for section symbols! */
1440 if ((*sym1)->flags & BSF_SECTION_SYM)
1441 count1 = (int)(*sym1)->udata;
1443 count1 = (*som_symbol_data ((*sym1)))->reloc_count;
1445 if ((*sym2)->flags & BSF_SECTION_SYM)
1446 count2 = (int)(*sym2)->udata;
1448 count2 = (*som_symbol_data ((*sym2)))->reloc_count;
1450 /* Return the appropriate value. */
1451 if (count1 < count2)
1453 else if (count1 > count2)
1458 /* Perform various work in preparation for emitting the fixup stream. */
1461 som_prep_for_fixups (abfd, syms, num_syms)
1464 unsigned long num_syms;
1469 /* Most SOM relocations involving a symbol have a length which is
1470 dependent on the index of the symbol. So symbols which are
1471 used often in relocations should have a small index. */
1473 /* First initialize the counters for each symbol. */
1474 for (i = 0; i < num_syms; i++)
1476 /* Handle a section symbol; these have no pointers back to the
1477 SOM symbol info. So we just use the pointer field (udata)
1478 to hold the relocation count.
1480 FIXME. While we're here set the name of any section symbol
1481 to something which will not screw GDB. How do other formats
1482 deal with this?!? */
1483 if (som_symbol_data (syms[i]) == NULL)
1485 syms[i]->flags |= BSF_SECTION_SYM;
1486 syms[i]->name = "L$0\002";
1487 syms[i]->udata = (PTR) 0;
1490 (*som_symbol_data (syms[i]))->reloc_count = 0;
1493 /* Now that the counters are initialized, make a weighted count
1494 of how often a given symbol is used in a relocation. */
1495 for (section = abfd->sections; section != NULL; section = section->next)
1499 /* Does this section have any relocations? */
1500 if (section->reloc_count <= 0)
1503 /* Walk through each relocation for this section. */
1504 for (i = 1; i < section->reloc_count; i++)
1506 arelent *reloc = section->orelocation[i];
1509 /* If no symbol, then there is no counter to increase. */
1510 if (reloc->sym_ptr_ptr == NULL)
1513 /* Scaling to encourage symbols involved in R_DP_RELATIVE
1514 and R_CODE_ONE_SYMBOL relocations to come first. These
1515 two relocations have single byte versions if the symbol
1516 index is very small. */
1517 if (reloc->howto->type == R_DP_RELATIVE
1518 || reloc->howto->type == R_CODE_ONE_SYMBOL)
1523 /* Handle section symbols by ramming the count in the udata
1524 field. It will not be used and the count is very important
1525 for these symbols. */
1526 if ((*reloc->sym_ptr_ptr)->flags & BSF_SECTION_SYM)
1528 (*reloc->sym_ptr_ptr)->udata =
1529 (PTR) ((int) (*reloc->sym_ptr_ptr)->udata + scale);
1533 /* A normal symbol. Increment the count. */
1534 (*som_symbol_data ((*reloc->sym_ptr_ptr)))->reloc_count += scale;
1538 /* Now sort the symbols. */
1539 qsort (syms, num_syms, sizeof (asymbol *), compare_syms);
1541 /* Compute the symbol indexes, they will be needed by the relocation
1543 for (i = 0; i < num_syms; i++)
1545 /* A section symbol. Again, there is no pointer to backend symbol
1546 information, so we reuse (abuse) the udata field again. */
1547 if (syms[i]->flags & BSF_SECTION_SYM)
1548 syms[i]->udata = (PTR) i;
1550 (*som_symbol_data (syms[i]))->index = i;
1555 som_write_fixups (abfd, current_offset, total_reloc_sizep)
1557 unsigned long current_offset;
1558 unsigned int *total_reloc_sizep;
1561 unsigned char *tmp_space, *p;
1562 unsigned int total_reloc_size = 0;
1563 unsigned int subspace_reloc_size = 0;
1564 unsigned int num_spaces = obj_som_file_hdr (abfd)->space_total;
1565 asection *section = abfd->sections;
1567 /* Get a chunk of memory that we can use as buffer space, then throw
1569 tmp_space = alloca (SOM_TMP_BUFSIZE);
1570 bzero (tmp_space, SOM_TMP_BUFSIZE);
1573 /* All the fixups for a particular subspace are emitted in a single
1574 stream. All the subspaces for a particular space are emitted
1577 So, to get all the locations correct one must iterate through all the
1578 spaces, for each space iterate through its subspaces and output a
1580 for (i = 0; i < num_spaces; i++)
1582 asection *subsection;
1585 while (som_section_data (section)->is_space == 0)
1586 section = section->next;
1588 /* Now iterate through each of its subspaces. */
1589 for (subsection = abfd->sections;
1591 subsection = subsection->next)
1595 /* Find a subspace of this space. */
1596 if (som_section_data (subsection)->is_subspace == 0
1597 || som_section_data (subsection)->containing_space != section)
1600 /* If this subspace had no relocations, then we're finished
1602 if (subsection->reloc_count <= 0)
1604 som_section_data (subsection)->subspace_dict.fixup_request_index
1609 /* This subspace has some relocations. Put the relocation stream
1610 index into the subspace record. */
1611 som_section_data (subsection)->subspace_dict.fixup_request_index
1614 /* To make life easier start over with a clean slate for
1615 each subspace. Seek to the start of the relocation stream
1616 for this subspace in preparation for writing out its fixup
1618 if (bfd_seek (abfd, current_offset + total_reloc_size, SEEK_SET) != 0)
1620 bfd_error = system_call_error;
1624 /* Buffer space has already been allocated. Just perform some
1625 initialization here. */
1627 subspace_reloc_size = 0;
1629 som_initialize_reloc_queue (reloc_queue);
1631 /* Translate each BFD relocation into one or more SOM
1633 for (j = 0; j < subsection->reloc_count; j++)
1635 arelent *bfd_reloc = subsection->orelocation[j];
1639 /* Get the symbol number. Remember it's stored in a
1640 special place for section symbols. */
1641 if ((*bfd_reloc->sym_ptr_ptr)->flags & BSF_SECTION_SYM)
1642 sym_num = (int) (*bfd_reloc->sym_ptr_ptr)->udata;
1644 sym_num = (*som_symbol_data ((*bfd_reloc->sym_ptr_ptr)))->index;
1646 /* If there is not enough room for the next couple relocations,
1647 then dump the current buffer contents now. Also reinitialize
1648 the relocation queue.
1650 FIXME. We assume here that no BFD relocation will expand
1651 to more than 100 bytes of SOM relocations. This should (?!?)
1653 if (p - tmp_space + 100 > SOM_TMP_BUFSIZE)
1655 if (bfd_write ((PTR) tmp_space, p - tmp_space, 1, abfd)
1658 bfd_error = system_call_error;
1662 som_initialize_reloc_queue (reloc_queue);
1665 /* Emit R_NO_RELOCATION fixups to map any bytes which were
1667 skip = bfd_reloc->address - reloc_offset;
1668 p = som_reloc_skip (abfd, skip, p,
1669 &subspace_reloc_size, reloc_queue);
1671 /* Update reloc_offset for the next iteration.
1673 Note R_ENTRY and R_EXIT relocations are just markers,
1674 they do not consume input bytes. */
1675 if (bfd_reloc->howto->type != R_ENTRY
1676 && bfd_reloc->howto->type != R_EXIT)
1677 reloc_offset = bfd_reloc->address + 4;
1679 reloc_offset = bfd_reloc->address;
1682 /* Now the actual relocation we care about. */
1683 switch (bfd_reloc->howto->type)
1687 p = som_reloc_call (abfd, p, &subspace_reloc_size,
1688 bfd_reloc, sym_num, reloc_queue);
1691 case R_CODE_ONE_SYMBOL:
1693 /* Account for any addend. */
1694 if (bfd_reloc->addend)
1695 p = som_reloc_addend (abfd, bfd_reloc->addend, p,
1696 &subspace_reloc_size, reloc_queue);
1700 bfd_put_8 (abfd, bfd_reloc->howto->type + sym_num, p);
1701 subspace_reloc_size += 1;
1704 else if (sym_num < 0x100)
1706 bfd_put_8 (abfd, bfd_reloc->howto->type + 32, p);
1707 bfd_put_8 (abfd, sym_num, p + 1);
1708 p = try_prev_fixup (abfd, &subspace_reloc_size, p,
1711 else if (sym_num < 0x10000000)
1713 bfd_put_8 (abfd, bfd_reloc->howto->type + 33, p);
1714 bfd_put_8 (abfd, sym_num >> 16, p + 1);
1715 bfd_put_16 (abfd, sym_num, p + 2);
1716 p = try_prev_fixup (abfd, &subspace_reloc_size,
1723 case R_DATA_ONE_SYMBOL:
1726 /* Account for any addend. */
1727 if (bfd_reloc->addend)
1728 p = som_reloc_addend (abfd, bfd_reloc->addend, p,
1729 &subspace_reloc_size, reloc_queue);
1731 if (sym_num < 0x100)
1733 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
1734 bfd_put_8 (abfd, sym_num, p + 1);
1735 p = try_prev_fixup (abfd, &subspace_reloc_size, p,
1738 else if (sym_num < 0x10000000)
1740 bfd_put_8 (abfd, bfd_reloc->howto->type + 1, p);
1741 bfd_put_8 (abfd, sym_num >> 16, p + 1);
1742 bfd_put_16 (abfd, sym_num, p + 2);
1743 p = try_prev_fixup (abfd, &subspace_reloc_size,
1753 = (int *) (*som_symbol_data ((*bfd_reloc->sym_ptr_ptr)))->unwind;
1754 bfd_put_8 (abfd, R_ENTRY, p);
1755 bfd_put_32 (abfd, descp[0], p + 1);
1756 bfd_put_32 (abfd, descp[1], p + 5);
1757 p = try_prev_fixup (abfd, &subspace_reloc_size,
1763 bfd_put_8 (abfd, R_EXIT, p);
1764 subspace_reloc_size += 1;
1768 /* Put a "R_RESERVED" relocation in the stream if
1769 we hit something we do not understand. The linker
1770 will complain loudly if this ever happens. */
1772 bfd_put_8 (abfd, 0xff, p);
1773 subspace_reloc_size += 1;
1778 /* Last BFD relocation for a subspace has been processed.
1779 Map the rest of the subspace with R_NO_RELOCATION fixups. */
1780 p = som_reloc_skip (abfd, bfd_section_size (abfd, subsection)
1782 p, &subspace_reloc_size, reloc_queue);
1784 /* Scribble out the relocations. */
1785 if (bfd_write ((PTR) tmp_space, p - tmp_space, 1, abfd)
1788 bfd_error = system_call_error;
1793 total_reloc_size += subspace_reloc_size;
1794 som_section_data (subsection)->subspace_dict.fixup_request_quantity
1795 = subspace_reloc_size;
1797 section = section->next;
1799 *total_reloc_sizep = total_reloc_size;
1803 /* Write out the space/subspace string table. */
1806 som_write_space_strings (abfd, current_offset, string_sizep)
1808 unsigned long current_offset;
1809 unsigned int *string_sizep;
1811 unsigned char *tmp_space, *p;
1812 unsigned int strings_size = 0;
1815 /* Get a chunk of memory that we can use as buffer space, then throw
1817 tmp_space = alloca (SOM_TMP_BUFSIZE);
1818 bzero (tmp_space, SOM_TMP_BUFSIZE);
1821 /* Seek to the start of the space strings in preparation for writing
1823 if (bfd_seek (abfd, current_offset, SEEK_SET) != 0)
1825 bfd_error = system_call_error;
1829 /* Walk through all the spaces and subspaces (order is not important)
1830 building up and writing string table entries for their names. */
1831 for (section = abfd->sections; section != NULL; section = section->next)
1835 /* Only work with space/subspaces; avoid any other sections
1836 which might have been made (.text for example). */
1837 if (som_section_data (section)->is_space == 0
1838 && som_section_data (section)->is_subspace == 0)
1841 /* Get the length of the space/subspace name. */
1842 length = strlen (section->name);
1844 /* If there is not enough room for the next entry, then dump the
1845 current buffer contents now. Each entry will take 4 bytes to
1846 hold the string length + the string itself + null terminator. */
1847 if (p - tmp_space + 5 + length > SOM_TMP_BUFSIZE)
1849 if (bfd_write ((PTR) tmp_space, p - tmp_space, 1, abfd)
1852 bfd_error = system_call_error;
1855 /* Reset to beginning of the buffer space. */
1859 /* First element in a string table entry is the length of the
1860 string. Alignment issues are already handled. */
1861 bfd_put_32 (abfd, length, p);
1865 /* Record the index in the space/subspace records. */
1866 if (som_section_data (section)->is_space)
1867 som_section_data (section)->space_dict.name.n_strx = strings_size;
1869 som_section_data (section)->subspace_dict.name.n_strx = strings_size;
1871 /* Next comes the string itself + a null terminator. */
1872 strcpy (p, section->name);
1874 strings_size += length + 1;
1876 /* Always align up to the next word boundary. */
1877 while (strings_size % 4)
1879 bfd_put_8 (abfd, 0, p);
1885 /* Done with the space/subspace strings. Write out any information
1886 contained in a partial block. */
1887 if (bfd_write ((PTR) tmp_space, p - tmp_space, 1, abfd) != p - tmp_space)
1889 bfd_error = system_call_error;
1892 *string_sizep = strings_size;
1896 /* Write out the symbol string table. */
1899 som_write_symbol_strings (abfd, current_offset, syms, num_syms, string_sizep)
1901 unsigned long current_offset;
1903 unsigned int num_syms;
1904 unsigned int *string_sizep;
1907 unsigned char *tmp_space, *p;
1908 unsigned int strings_size = 0;
1910 /* Get a chunk of memory that we can use as buffer space, then throw
1912 tmp_space = alloca (SOM_TMP_BUFSIZE);
1913 bzero (tmp_space, SOM_TMP_BUFSIZE);
1916 /* Seek to the start of the space strings in preparation for writing
1918 if (bfd_seek (abfd, current_offset, SEEK_SET) != 0)
1920 bfd_error = system_call_error;
1924 for (i = 0; i < num_syms; i++)
1926 int length = strlen (syms[i]->name);
1928 /* If there is not enough room for the next entry, then dump the
1929 current buffer contents now. */
1930 if (p - tmp_space + 5 + length > SOM_TMP_BUFSIZE)
1932 if (bfd_write ((PTR) tmp_space, p - tmp_space, 1, abfd)
1935 bfd_error = system_call_error;
1938 /* Reset to beginning of the buffer space. */
1942 /* First element in a string table entry is the length of the
1943 string. This must always be 4 byte aligned. This is also
1944 an appropriate time to fill in the string index field in the
1945 symbol table entry. */
1946 bfd_put_32 (abfd, length, p);
1950 /* Next comes the string itself + a null terminator. */
1951 strcpy (p, syms[i]->name);
1954 syms[i]->name = (char *)strings_size;
1956 strings_size += length + 1;
1958 /* Always align up to the next word boundary. */
1959 while (strings_size % 4)
1961 bfd_put_8 (abfd, 0, p);
1967 /* Scribble out any partial block. */
1968 if (bfd_write ((PTR) tmp_space, p - tmp_space, 1, abfd) != p - tmp_space)
1970 bfd_error = system_call_error;
1974 *string_sizep = strings_size;
1978 /* Finally, scribble out the various headers to the disk. */
1981 som_write_headers (abfd)
1984 int num_spaces = som_count_spaces (abfd);
1986 int subspace_index = 0;
1990 /* Subspaces are written first so that we can set up information
1991 about them in their containing spaces as the subspace is written. */
1993 /* Seek to the start of the subspace dictionary records. */
1994 location = obj_som_file_hdr (abfd)->subspace_location;
1995 bfd_seek (abfd, location, SEEK_SET);
1996 section = abfd->sections;
1997 /* Now for each loadable space write out records for its subspaces. */
1998 for (i = 0; i < num_spaces; i++)
2000 asection *subsection;
2003 while (som_section_data (section)->is_space == 0)
2004 section = section->next;
2006 /* Now look for all its subspaces. */
2007 for (subsection = abfd->sections;
2009 subsection = subsection->next)
2012 /* Skip any section which does not correspond to a space
2013 or subspace. Or does not have SEC_ALLOC set (and therefore
2014 has no real bits on the disk). */
2015 if (som_section_data (subsection)->is_subspace == 0
2016 || som_section_data (subsection)->containing_space != section
2017 || (subsection->flags & SEC_ALLOC) == 0)
2020 /* If this is the first subspace for this space, then save
2021 the index of the subspace in its containing space. Also
2022 set "is_loadable" in the containing space. */
2024 if (som_section_data (section)->space_dict.subspace_quantity == 0)
2026 som_section_data (section)->space_dict.is_loadable = 1;
2027 som_section_data (section)->space_dict.subspace_index
2031 /* Increment the number of subspaces seen and the number of
2032 subspaces contained within the current space. */
2034 som_section_data (section)->space_dict.subspace_quantity++;
2036 /* Mark the index of the current space within the subspace's
2037 dictionary record. */
2038 som_section_data (subsection)->subspace_dict.space_index = i;
2040 /* Dump the current subspace header. */
2041 if (bfd_write ((PTR) &som_section_data (subsection)->subspace_dict,
2042 sizeof (struct subspace_dictionary_record), 1, abfd)
2043 != sizeof (struct subspace_dictionary_record))
2045 bfd_error = system_call_error;
2049 /* Goto the next section. */
2050 section = section->next;
2053 /* Now repeat the process for unloadable subspaces. */
2054 section = abfd->sections;
2055 /* Now for each space write out records for its subspaces. */
2056 for (i = 0; i < num_spaces; i++)
2058 asection *subsection;
2061 while (som_section_data (section)->is_space == 0)
2062 section = section->next;
2064 /* Now look for all its subspaces. */
2065 for (subsection = abfd->sections;
2067 subsection = subsection->next)
2070 /* Skip any section which does not correspond to a space or
2071 subspace, or which SEC_ALLOC set (and therefore handled
2072 in the loadable spaces/subspaces code above. */
2074 if (som_section_data (subsection)->is_subspace == 0
2075 || som_section_data (subsection)->containing_space != section
2076 || (subsection->flags & SEC_ALLOC) != 0)
2079 /* If this is the first subspace for this space, then save
2080 the index of the subspace in its containing space. Clear
2083 if (som_section_data (section)->space_dict.subspace_quantity == 0)
2085 som_section_data (section)->space_dict.is_loadable = 0;
2086 som_section_data (section)->space_dict.subspace_index
2090 /* Increment the number of subspaces seen and the number of
2091 subspaces contained within the current space. */
2092 som_section_data (section)->space_dict.subspace_quantity++;
2095 /* Mark the index of the current space within the subspace's
2096 dictionary record. */
2097 som_section_data (subsection)->subspace_dict.space_index = i;
2099 /* Dump this subspace header. */
2100 if (bfd_write ((PTR) &som_section_data (subsection)->subspace_dict,
2101 sizeof (struct subspace_dictionary_record), 1, abfd)
2102 != sizeof (struct subspace_dictionary_record))
2104 bfd_error = system_call_error;
2108 /* Goto the next section. */
2109 section = section->next;
2112 /* All the subspace dictiondary records are written, and all the
2113 fields are set up in the space dictionary records.
2115 Seek to the right location and start writing the space
2116 dictionary records. */
2117 location = obj_som_file_hdr (abfd)->space_location;
2118 bfd_seek (abfd, location, SEEK_SET);
2120 section = abfd->sections;
2121 for (i = 0; i < num_spaces; i++)
2125 while (som_section_data (section)->is_space == 0)
2126 section = section->next;
2128 /* Dump its header */
2129 if (bfd_write ((PTR) &som_section_data (section)->space_dict,
2130 sizeof (struct space_dictionary_record), 1, abfd)
2131 != sizeof (struct space_dictionary_record))
2133 bfd_error = system_call_error;
2137 /* Goto the next section. */
2138 section = section->next;
2141 /* Only thing left to do is write out the file header. It is always
2142 at location zero. Seek there and write it. */
2143 bfd_seek (abfd, (file_ptr) 0, SEEK_SET);
2144 if (bfd_write ((PTR) obj_som_file_hdr (abfd),
2145 sizeof (struct header), 1, abfd)
2146 != sizeof (struct header))
2148 bfd_error = system_call_error;
2154 /* Compute and return the checksum for a SOM file header. */
2156 static unsigned long
2157 som_compute_checksum (abfd)
2160 unsigned long checksum, count, i;
2161 unsigned long *buffer = (unsigned long *) obj_som_file_hdr (abfd);
2164 count = sizeof (struct header) / sizeof (unsigned long);
2165 for (i = 0; i < count; i++)
2166 checksum ^= *(buffer + i);
2171 /* Build and write, in one big chunk, the entire symbol table for
2175 som_build_and_write_symbol_table (abfd)
2178 unsigned int num_syms = bfd_get_symcount (abfd);
2179 file_ptr symtab_location = obj_som_file_hdr (abfd)->symbol_location;
2180 asymbol **bfd_syms = bfd_get_outsymbols (abfd);
2181 struct symbol_dictionary_record *som_symtab;
2184 /* Compute total symbol table size and allocate a chunk of memory
2185 to hold the symbol table as we build it. */
2186 symtab_size = num_syms * sizeof (struct symbol_dictionary_record);
2187 som_symtab = (struct symbol_dictionary_record *) alloca (symtab_size);
2188 bzero (som_symtab, symtab_size);
2190 /* Walk over each symbol. */
2191 for (i = 0; i < num_syms; i++)
2193 /* This is really an index into the symbol strings table.
2194 By the time we get here, the index has already been
2195 computed and stored into the name field in the BFD symbol. */
2196 som_symtab[i].name.n_strx = (int) bfd_syms[i]->name;
2198 /* The HP SOM linker requires detailed type information about
2199 all symbols (including undefined symbols!). Unfortunately,
2200 the type specified in an import/export statement does not
2201 always match what the linker wants. Severe braindamage. */
2203 /* Section symbols will not have a SOM symbol type assigned to
2204 them yet. Assign all section symbols type ST_DATA. */
2205 if (bfd_syms[i]->flags & BSF_SECTION_SYM)
2206 som_symtab[i].symbol_type = ST_DATA;
2209 /* Common symbols must have scope SS_UNSAT and type
2210 ST_STORAGE or the linker will choke. */
2211 if (bfd_syms[i]->section == &bfd_com_section)
2213 som_symtab[i].symbol_scope = SS_UNSAT;
2214 som_symtab[i].symbol_type = ST_STORAGE;
2217 /* It is possible to have a symbol without an associated
2218 type. This happens if the user imported the symbol
2219 without a type and the symbol was never defined
2220 locally. If BSF_FUNCTION is set for this symbol, then
2221 assign it type ST_CODE (the HP linker requires undefined
2222 external functions to have type ST_CODE rather than ST_ENTRY. */
2223 else if (((*som_symbol_data (bfd_syms[i]))->som_type
2224 == SYMBOL_TYPE_UNKNOWN)
2225 && (bfd_syms[i]->section == &bfd_und_section)
2226 && (bfd_syms[i]->flags & BSF_FUNCTION))
2227 som_symtab[i].symbol_type = ST_CODE;
2229 /* Handle function symbols which were defined in this file.
2230 They should have type ST_ENTRY. Also retrieve the argument
2231 relocation bits from the SOM backend information. */
2232 else if (((*som_symbol_data (bfd_syms[i]))->som_type
2233 == SYMBOL_TYPE_ENTRY)
2234 || (((*som_symbol_data (bfd_syms[i]))->som_type
2235 == SYMBOL_TYPE_CODE)
2236 && (bfd_syms[i]->flags & BSF_FUNCTION))
2237 || (((*som_symbol_data (bfd_syms[i]))->som_type
2238 == SYMBOL_TYPE_UNKNOWN)
2239 && (bfd_syms[i]->flags & BSF_FUNCTION)))
2241 som_symtab[i].symbol_type = ST_ENTRY;
2242 som_symtab[i].arg_reloc
2243 = (*som_symbol_data (bfd_syms[i]))->tc_data.hppa_arg_reloc;
2246 /* If the type is unknown at this point, it should be
2247 ST_DATA (functions were handled as special cases above). */
2248 else if ((*som_symbol_data (bfd_syms[i]))->som_type
2249 == SYMBOL_TYPE_UNKNOWN)
2250 som_symtab[i].symbol_type = ST_DATA;
2252 /* From now on it's a very simple mapping. */
2253 else if ((*som_symbol_data (bfd_syms[i]))->som_type
2254 == SYMBOL_TYPE_ABSOLUTE)
2255 som_symtab[i].symbol_type = ST_ABSOLUTE;
2256 else if ((*som_symbol_data (bfd_syms[i]))->som_type
2257 == SYMBOL_TYPE_CODE)
2258 som_symtab[i].symbol_type = ST_CODE;
2259 else if ((*som_symbol_data (bfd_syms[i]))->som_type
2260 == SYMBOL_TYPE_DATA)
2261 som_symtab[i].symbol_type = ST_DATA;
2262 else if ((*som_symbol_data (bfd_syms[i]))->som_type
2263 == SYMBOL_TYPE_MILLICODE)
2264 som_symtab[i].symbol_type = ST_MILLICODE;
2265 else if ((*som_symbol_data (bfd_syms[i]))->som_type
2266 == SYMBOL_TYPE_PLABEL)
2267 som_symtab[i].symbol_type = ST_PLABEL;
2268 else if ((*som_symbol_data (bfd_syms[i]))->som_type
2269 == SYMBOL_TYPE_PRI_PROG)
2270 som_symtab[i].symbol_type = ST_PRI_PROG;
2271 else if ((*som_symbol_data (bfd_syms[i]))->som_type
2272 == SYMBOL_TYPE_SEC_PROG)
2273 som_symtab[i].symbol_type = ST_SEC_PROG;
2276 /* Now handle the symbol's scope. Exported data which is not
2277 in the common section has scope SS_UNIVERSAL. Note scope
2278 of common symbols was handled earlier! */
2279 if (bfd_syms[i]->flags & BSF_EXPORT
2280 && bfd_syms[i]->section != &bfd_com_section)
2281 som_symtab[i].symbol_scope = SS_UNIVERSAL;
2282 /* Any undefined symbol at this point has a scope SS_UNSAT. */
2283 else if (bfd_syms[i]->section == &bfd_und_section)
2284 som_symtab[i].symbol_scope = SS_UNSAT;
2285 /* Anything else which is not in the common section has scope
2287 else if (bfd_syms[i]->section != &bfd_com_section)
2288 som_symtab[i].symbol_scope = SS_LOCAL;
2290 /* Now set the symbol_info field. It has no real meaning
2291 for undefined or common symbols, but the HP linker will
2292 choke if it's not set to some "reasonable" value. We
2293 use zero as a reasonable value. */
2294 if (bfd_syms[i]->section == &bfd_com_section
2295 || bfd_syms[i]->section == &bfd_und_section)
2296 som_symtab[i].symbol_info = 0;
2297 /* For all other symbols, the symbol_info field contains the
2298 subspace index of the space this symbol is contained in. */
2300 som_symtab[i].symbol_info
2301 = som_section_data (bfd_syms[i]->section)->subspace_index;
2303 /* Set the symbol's value. */
2304 som_symtab[i].symbol_value
2305 = bfd_syms[i]->value + bfd_syms[i]->section->vma;
2308 /* Egad. Everything is ready, seek to the right location and
2309 scribble out the symbol table. */
2310 if (bfd_seek (abfd, symtab_location, SEEK_SET) != 0)
2312 bfd_error = system_call_error;
2316 if (bfd_write ((PTR) som_symtab, symtab_size, 1, abfd) != symtab_size)
2318 bfd_error = system_call_error;
2324 /* Write an object in SOM format. */
2327 som_write_object_contents (abfd)
2330 if (abfd->output_has_begun == false)
2332 /* Set up fixed parts of the file, space, and subspace headers.
2333 Notify the world that output has begun. */
2334 som_prep_headers (abfd);
2335 abfd->output_has_begun = true;
2337 /* Not in Cygnus sources yet. */
2338 /* Start writing the object file. This include all the string
2339 tables, fixup streams, and other portions of the object file. */
2340 som_begin_writing (abfd);
2344 /* Now that the symbol table information is complete, build and
2345 write the symbol table. */
2346 if (som_build_and_write_symbol_table (abfd) == false)
2349 /* Compute the checksum for the file header just before writing
2350 the header to disk. */
2351 obj_som_file_hdr (abfd)->checksum = som_compute_checksum (abfd);
2352 return (som_write_headers (abfd));
2356 /* Read and save the string table associated with the given BFD. */
2359 som_slurp_string_table (abfd)
2364 /* Use the saved version if its available. */
2365 if (obj_som_stringtab (abfd) != NULL)
2368 /* Allocate and read in the string table. */
2369 stringtab = bfd_zalloc (abfd, obj_som_stringtab_size (abfd));
2370 if (stringtab == NULL)
2372 bfd_error = no_memory;
2376 if (bfd_seek (abfd, obj_som_str_filepos (abfd), SEEK_SET) < 0)
2378 bfd_error = system_call_error;
2382 if (bfd_read (stringtab, obj_som_stringtab_size (abfd), 1, abfd)
2383 != obj_som_stringtab_size (abfd))
2385 bfd_error = system_call_error;
2389 /* Save our results and return success. */
2390 obj_som_stringtab (abfd) = stringtab;
2394 /* Return the amount of data (in bytes) required to hold the symbol
2395 table for this object. */
2398 som_get_symtab_upper_bound (abfd)
2401 if (!som_slurp_symbol_table (abfd))
2404 return (bfd_get_symcount (abfd) + 1) * (sizeof (som_symbol_type *));
2407 /* Convert from a SOM subspace index to a BFD section. */
2410 som_section_from_subspace_index (abfd, index)
2416 for (section = abfd->sections; section != NULL; section = section->next)
2417 if (som_section_data (section)->subspace_index == index)
2420 /* Should never happen. */
2424 /* Read and save the symbol table associated with the given BFD. */
2427 som_slurp_symbol_table (abfd)
2430 int symbol_count = bfd_get_symcount (abfd);
2431 int symsize = sizeof (struct symbol_dictionary_record);
2433 struct symbol_dictionary_record *buf, *bufp, *endbufp;
2434 som_symbol_type *sym, *symbase;
2436 /* Return saved value if it exists. */
2437 if (obj_som_symtab (abfd) != NULL)
2440 /* Sanity checking. Make sure there are some symbols and that
2441 we can read the string table too. */
2442 if (symbol_count == 0)
2444 bfd_error = no_symbols;
2448 if (!som_slurp_string_table (abfd))
2451 stringtab = obj_som_stringtab (abfd);
2453 symbase = (som_symbol_type *)
2454 bfd_zalloc (abfd, symbol_count * sizeof (som_symbol_type));
2455 if (symbase == NULL)
2457 bfd_error = no_memory;
2461 /* Read in the external SOM representation. */
2462 buf = alloca (symbol_count * symsize);
2465 bfd_error = no_memory;
2468 if (bfd_seek (abfd, obj_som_sym_filepos (abfd), SEEK_SET) < 0)
2470 bfd_error = system_call_error;
2473 if (bfd_read (buf, symbol_count * symsize, 1, abfd)
2474 != symbol_count * symsize)
2476 bfd_error = no_symbols;
2480 /* Iterate over all the symbols and internalize them. */
2481 endbufp = buf + symbol_count;
2482 for (bufp = buf, sym = symbase; bufp < endbufp; ++bufp)
2485 /* I don't think we care about these. */
2486 if (bufp->symbol_type == ST_SYM_EXT
2487 || bufp->symbol_type == ST_ARG_EXT)
2490 /* Some reasonable defaults. */
2491 sym->symbol.the_bfd = abfd;
2492 sym->symbol.name = bufp->name.n_strx + stringtab;
2493 sym->symbol.value = bufp->symbol_value;
2494 sym->symbol.section = 0;
2495 sym->symbol.flags = 0;
2497 switch (bufp->symbol_type)
2500 sym->symbol.flags |= BSF_FUNCTION;
2501 sym->symbol.value &= ~0x3;
2509 sym->symbol.value &= ~0x3;
2515 /* Handle scoping and section information. */
2516 switch (bufp->symbol_scope)
2518 /* symbol_info field is undefined for SS_EXTERNAL and SS_UNSAT symbols,
2519 so the section associated with this symbol can't be known. */
2522 sym->symbol.flags |= (BSF_EXPORT | BSF_GLOBAL);
2526 sym->symbol.flags |= (BSF_EXPORT | BSF_GLOBAL);
2528 = som_section_from_subspace_index (abfd, bufp->symbol_info);
2529 sym->symbol.value -= sym->symbol.section->vma;
2533 /* SS_GLOBAL and SS_LOCAL are two names for the same thing.
2534 Sound dumb? It is. */
2538 sym->symbol.flags |= BSF_LOCAL;
2540 = som_section_from_subspace_index (abfd, bufp->symbol_info);
2541 sym->symbol.value -= sym->symbol.section->vma;
2545 /* Mark symbols left around by the debugger. */
2546 if (strlen (sym->symbol.name) >= 3
2547 && sym->symbol.name[0] == 'L'
2548 && (sym->symbol.name[2] == '$' || sym->symbol.name[3] == '$'))
2549 sym->symbol.flags |= BSF_DEBUGGING;
2551 /* Note increment at bottom of loop, since we skip some symbols
2552 we can not include it as part of the for statement. */
2556 /* Save our results and return success. */
2557 obj_som_symtab (abfd) = symbase;
2561 /* Canonicalize a SOM symbol table. Return the number of entries
2562 in the symbol table. */
2565 som_get_symtab (abfd, location)
2570 som_symbol_type *symbase;
2572 if (!som_slurp_symbol_table (abfd))
2575 i = bfd_get_symcount (abfd);
2576 symbase = obj_som_symtab (abfd);
2578 for (; i > 0; i--, location++, symbase++)
2579 *location = &symbase->symbol;
2581 /* Final null pointer. */
2583 return (bfd_get_symcount (abfd));
2586 /* Make a SOM symbol. There is nothing special to do here. */
2589 som_make_empty_symbol (abfd)
2592 som_symbol_type *new =
2593 (som_symbol_type *) bfd_zalloc (abfd, sizeof (som_symbol_type));
2596 bfd_error = no_memory;
2599 new->symbol.the_bfd = abfd;
2601 return &new->symbol;
2604 /* Print symbol information. */
2607 som_print_symbol (ignore_abfd, afile, symbol, how)
2611 bfd_print_symbol_type how;
2613 FILE *file = (FILE *) afile;
2616 case bfd_print_symbol_name:
2617 fprintf (file, "%s", symbol->name);
2619 case bfd_print_symbol_more:
2620 fprintf (file, "som ");
2621 fprintf_vma (file, symbol->value);
2622 fprintf (file, " %lx", (long) symbol->flags);
2624 case bfd_print_symbol_all:
2626 CONST char *section_name;
2627 section_name = symbol->section ? symbol->section->name : "(*none*)";
2628 bfd_print_symbol_vandf ((PTR) file, symbol);
2629 fprintf (file, " %s\t%s", section_name, symbol->name);
2636 som_get_reloc_upper_bound (abfd, asect)
2640 fprintf (stderr, "som_get_reloc_upper_bound unimplemented\n");
2647 som_canonicalize_reloc (abfd, section, relptr, symbols)
2653 fprintf (stderr, "som_canonicalize_reloc unimplemented\n");
2658 extern bfd_target som_vec;
2660 /* A hook to set up object file dependent section information. */
2663 som_new_section_hook (abfd, newsect)
2667 newsect->used_by_bfd = (struct som_section_data_struct *)
2668 bfd_zalloc (abfd, sizeof (struct som_section_data_struct));
2669 newsect->alignment_power = 3;
2671 /* Initialize the subspace_index field to -1 so that it does
2672 not match a subspace with an index of 0. */
2673 som_section_data (newsect)->subspace_index = -1;
2675 /* We allow more than three sections internally */
2679 /* Set backend info for sections which can not be described
2680 in the BFD data structures. */
2683 bfd_som_set_section_attributes (section, defined, private, sort_key, spnum)
2687 unsigned char sort_key;
2690 struct space_dictionary_record *space_dict;
2692 som_section_data (section)->is_space = 1;
2693 space_dict = &som_section_data (section)->space_dict;
2694 space_dict->is_defined = defined;
2695 space_dict->is_private = private;
2696 space_dict->sort_key = sort_key;
2697 space_dict->space_number = spnum;
2700 /* Set backend info for subsections which can not be described
2701 in the BFD data structures. */
2704 bfd_som_set_subsection_attributes (section, container, access,
2707 asection *container;
2709 unsigned char sort_key;
2712 struct subspace_dictionary_record *subspace_dict;
2713 som_section_data (section)->is_subspace = 1;
2714 subspace_dict = &som_section_data (section)->subspace_dict;
2715 subspace_dict->access_control_bits = access;
2716 subspace_dict->sort_key = sort_key;
2717 subspace_dict->quadrant = quadrant;
2718 som_section_data (section)->containing_space = container;
2721 /* Set the full SOM symbol type. SOM needs far more symbol information
2722 than any other object file format I'm aware of. It is mandatory
2723 to be able to know if a symbol is an entry point, millicode, data,
2724 code, absolute, storage request, or procedure label. If you get
2725 the symbol type wrong your program will not link. */
2728 bfd_som_set_symbol_type (symbol, type)
2732 (*som_symbol_data (symbol))->som_type = type;
2735 /* Attach 64bits of unwind information to a symbol (which hopefully
2736 is a function of some kind!). It would be better to keep this
2737 in the R_ENTRY relocation, but there is not enough space. */
2740 bfd_som_attach_unwind_info (symbol, unwind_desc)
2744 (*som_symbol_data (symbol))->unwind = unwind_desc;
2748 som_set_section_contents (abfd, section, location, offset, count)
2753 bfd_size_type count;
2755 if (abfd->output_has_begun == false)
2757 /* Set up fixed parts of the file, space, and subspace headers.
2758 Notify the world that output has begun. */
2759 som_prep_headers (abfd);
2760 abfd->output_has_begun = true;
2762 /* Not in Cygnus sources yet. */
2763 /* Start writing the object file. This include all the string
2764 tables, fixup streams, and other portions of the object file. */
2765 som_begin_writing (abfd);
2769 /* Only write subspaces which have "real" contents (eg. the contents
2770 are not generated at run time by the OS). */
2771 if (som_section_data (section)->is_subspace != 1
2772 || ((section->flags & (SEC_LOAD | SEC_DEBUGGING)) == 0))
2775 /* Seek to the proper offset within the object file and write the
2777 offset += som_section_data (section)->subspace_dict.file_loc_init_value;
2778 if (bfd_seek (abfd, offset, SEEK_SET) == -1)
2780 bfd_error = system_call_error;
2784 if (bfd_write ((PTR) location, 1, count, abfd) != count)
2786 bfd_error = system_call_error;
2793 som_set_arch_mach (abfd, arch, machine)
2795 enum bfd_architecture arch;
2796 unsigned long machine;
2798 /* Allow any architecture to be supported by the SOM backend */
2799 return bfd_default_set_arch_mach (abfd, arch, machine);
2803 som_find_nearest_line (abfd, section, symbols, offset, filename_ptr,
2804 functionname_ptr, line_ptr)
2809 CONST char **filename_ptr;
2810 CONST char **functionname_ptr;
2811 unsigned int *line_ptr;
2813 fprintf (stderr, "som_find_nearest_line unimplemented\n");
2820 som_sizeof_headers (abfd, reloc)
2824 fprintf (stderr, "som_sizeof_headers unimplemented\n");
2830 /* Return information about SOM symbol SYMBOL in RET. */
2833 som_get_symbol_info (ignore_abfd, symbol, ret)
2834 bfd *ignore_abfd; /* Ignored. */
2838 bfd_symbol_info (symbol, ret);
2841 /* End of miscellaneous support functions. */
2843 #define som_bfd_debug_info_start bfd_void
2844 #define som_bfd_debug_info_end bfd_void
2845 #define som_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
2847 #define som_openr_next_archived_file bfd_generic_openr_next_archived_file
2848 #define som_generic_stat_arch_elt bfd_generic_stat_arch_elt
2849 #define som_slurp_armap bfd_false
2850 #define som_slurp_extended_name_table _bfd_slurp_extended_name_table
2851 #define som_truncate_arname (void (*)())bfd_nullvoidptr
2852 #define som_write_armap 0
2854 #define som_get_lineno (struct lineno_cache_entry *(*)())bfd_nullvoidptr
2855 #define som_close_and_cleanup bfd_generic_close_and_cleanup
2856 #define som_get_section_contents bfd_generic_get_section_contents
2858 #define som_bfd_get_relocated_section_contents \
2859 bfd_generic_get_relocated_section_contents
2860 #define som_bfd_relax_section bfd_generic_relax_section
2861 #define som_bfd_seclet_link bfd_generic_seclet_link
2862 #define som_bfd_reloc_type_lookup \
2863 ((CONST struct reloc_howto_struct *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr)
2864 #define som_bfd_make_debug_symbol \
2865 ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
2867 /* Core file support is in the hpux-core backend. */
2868 #define som_core_file_failing_command _bfd_dummy_core_file_failing_command
2869 #define som_core_file_failing_signal _bfd_dummy_core_file_failing_signal
2870 #define som_core_file_matches_executable_p _bfd_dummy_core_file_matches_executable_p
2872 bfd_target som_vec =
2875 bfd_target_som_flavour,
2876 true, /* target byte order */
2877 true, /* target headers byte order */
2878 (HAS_RELOC | EXEC_P | /* object flags */
2879 HAS_LINENO | HAS_DEBUG |
2880 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
2881 (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
2882 | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
2884 /* leading_symbol_char: is the first char of a user symbol
2885 predictable, and if so what is it */
2887 ' ', /* ar_pad_char */
2888 16, /* ar_max_namelen */
2889 3, /* minimum alignment */
2890 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
2891 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
2892 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
2893 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
2894 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
2895 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
2897 som_object_p, /* bfd_check_format */
2898 bfd_generic_archive_p,
2904 _bfd_generic_mkarchive,
2909 som_write_object_contents,
2910 _bfd_write_archive_contents,
2918 #endif /* HOST_HPPAHPUX || HOST_HPPABSD */