1 /* BFD backend for core files which use the ptrace_user structure
2 Copyright 1993 Free Software Foundation, Inc.
3 The structure of this file is based on trad-core.c written by John Gilmore
5 Modified to work with the ptrace_user structure by Kevin A. Buettner.
6 (Longterm it may be better to merge this file with trad-core.c)
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 To use this file on a particular host, configure the host with these
25 parameters in the config/h-HOST file:
27 HDEFINES=-DPTRACE_CORE
28 HDEPFILES=ptrace-core.o
39 #include <sys/types.h>
40 #include <sys/param.h>
45 #include <sys/ptrace.h>
48 struct trad_core_struct
50 asection *data_section;
51 asection *stack_section;
52 asection *reg_section;
56 #define core_upage(bfd) (&((bfd)->tdata.trad_core_data->u))
57 #define core_datasec(bfd) ((bfd)->tdata.trad_core_data->data_section)
58 #define core_stacksec(bfd) ((bfd)->tdata.trad_core_data->stack_section)
59 #define core_regsec(bfd) ((bfd)->tdata.trad_core_data->reg_section)
61 /* forward declarations */
63 bfd_target * ptrace_unix_core_file_p PARAMS ((bfd *abfd));
64 char * ptrace_unix_core_file_failing_command PARAMS ((bfd *abfd));
65 int ptrace_unix_core_file_failing_signal PARAMS ((bfd *abfd));
66 boolean ptrace_unix_core_file_matches_executable_p
67 PARAMS ((bfd *core_bfd, bfd *exec_bfd));
71 ptrace_unix_core_file_p (abfd)
78 val = bfd_read ((void *)&u, 1, sizeof u, abfd);
79 if (val != sizeof u || u.pt_magic != _BCS_PTRACE_MAGIC
80 || u.pt_rev != _BCS_PTRACE_REV)
82 /* Too small to be a core file */
83 bfd_set_error (bfd_error_wrong_format);
87 /* OK, we believe you. You're a core file (sure, sure). */
89 /* Allocate both the upage and the struct core_data at once, so
90 a single free() will free them both. */
91 rawptr = (struct trad_core_struct *)
92 bfd_zalloc (abfd, sizeof (struct trad_core_struct));
95 bfd_set_error (bfd_error_no_memory);
99 abfd->tdata.trad_core_data = rawptr;
101 rawptr->u = u; /*Copy the uarea into the tdata part of the bfd */
103 /* Create the sections. This is raunchy, but bfd_close wants to free
106 core_stacksec(abfd) = (asection *) bfd_zmalloc (sizeof (asection));
107 if (core_stacksec (abfd) == NULL) {
109 bfd_set_error (bfd_error_no_memory);
110 free ((void *)rawptr);
113 core_datasec (abfd) = (asection *) zalloc (sizeof (asection));
114 if (core_datasec (abfd) == NULL) {
116 free ((void *)core_stacksec (abfd));
119 core_regsec (abfd) = (asection *) zalloc (sizeof (asection));
120 if (core_regsec (abfd) == NULL) {
121 free ((void *)core_datasec (abfd));
125 core_stacksec (abfd)->name = ".stack";
126 core_datasec (abfd)->name = ".data";
127 core_regsec (abfd)->name = ".reg";
129 /* FIXME: Need to worry about shared memory, library data, and library
130 text. I don't think that any of these things are supported on the
131 system on which I am developing this for though. */
134 core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
135 core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
136 core_regsec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
138 core_datasec (abfd)->_raw_size = u.pt_dsize;
139 core_stacksec (abfd)->_raw_size = u.pt_ssize;
140 core_regsec (abfd)->_raw_size = sizeof(u);
142 core_datasec (abfd)->vma = u.pt_o_data_start;
143 core_stacksec (abfd)->vma = USRSTACK - u.pt_ssize;
144 core_regsec (abfd)->vma = 0 - sizeof(u); /* see trad-core.c */
146 core_datasec (abfd)->filepos = (int) u.pt_dataptr;
147 core_stacksec (abfd)->filepos = (int) (u.pt_dataptr + u.pt_dsize);
148 core_regsec (abfd)->filepos = 0; /* Register segment is ptrace_user */
150 /* Align to word at least */
151 core_stacksec (abfd)->alignment_power = 2;
152 core_datasec (abfd)->alignment_power = 2;
153 core_regsec (abfd)->alignment_power = 2;
155 abfd->sections = core_stacksec (abfd);
156 core_stacksec (abfd)->next = core_datasec (abfd);
157 core_datasec (abfd)->next = core_regsec (abfd);
158 abfd->section_count = 3;
164 ptrace_unix_core_file_failing_command (abfd)
167 char *com = abfd->tdata.trad_core_data->u.pt_comm;
176 ptrace_unix_core_file_failing_signal (abfd)
179 return abfd->tdata.trad_core_data->u.pt_sigframe.sig_num;
184 ptrace_unix_core_file_matches_executable_p (core_bfd, exec_bfd)
185 bfd *core_bfd, *exec_bfd;
187 /* FIXME: Use pt_timdat field of the ptrace_user structure to match
188 the date of the executable */
192 /* No archive file support via this BFD */
193 #define ptrace_unix_openr_next_archived_file bfd_generic_openr_next_archived_file
194 #define ptrace_unix_generic_stat_arch_elt bfd_generic_stat_arch_elt
195 #define ptrace_unix_slurp_armap bfd_false
196 #define ptrace_unix_slurp_extended_name_table bfd_true
197 #define ptrace_unix_write_armap (boolean (*) PARAMS \
198 ((bfd *arch, unsigned int elength, struct orl *map, \
199 unsigned int orl_count, int stridx))) bfd_false
200 #define ptrace_unix_truncate_arname bfd_dont_truncate_arname
201 #define aout_32_openr_next_archived_file bfd_generic_openr_next_archived_file
203 #define ptrace_unix_close_and_cleanup bfd_generic_close_and_cleanup
204 #define ptrace_unix_set_section_contents (boolean (*) PARAMS \
205 ((bfd *abfd, asection *section, PTR data, file_ptr offset, \
206 bfd_size_type count))) bfd_generic_set_section_contents
207 #define ptrace_unix_get_section_contents bfd_generic_get_section_contents
208 #define ptrace_unix_new_section_hook (boolean (*) PARAMS \
209 ((bfd *, sec_ptr))) bfd_true
210 #define ptrace_unix_get_symtab_upper_bound bfd_0l
211 #define ptrace_unix_get_symtab (long (*) PARAMS \
212 ((bfd *, struct symbol_cache_entry **))) bfd_0l
213 #define ptrace_unix_get_reloc_upper_bound (long (*) PARAMS \
214 ((bfd *, sec_ptr))) bfd_0l
215 #define ptrace_unix_canonicalize_reloc (long (*) PARAMS \
216 ((bfd *, sec_ptr, arelent **, struct symbol_cache_entry**))) bfd_0l
217 #define ptrace_unix_make_empty_symbol (struct symbol_cache_entry * \
218 (*) PARAMS ((bfd *))) bfd_false
219 #define ptrace_unix_print_symbol (void (*) PARAMS \
220 ((bfd *, PTR, struct symbol_cache_entry *, \
221 bfd_print_symbol_type))) bfd_false
222 #define ptrace_unix_get_symbol_info (void (*) PARAMS \
223 ((bfd *, struct symbol_cache_entry *, \
224 symbol_info *))) bfd_false
225 #define ptrace_unix_get_lineno (alent * (*) PARAMS \
226 ((bfd *, struct symbol_cache_entry *))) bfd_nullvoidptr
227 #define ptrace_unix_set_arch_mach (boolean (*) PARAMS \
228 ((bfd *, enum bfd_architecture, unsigned long))) bfd_false
229 #define ptrace_unix_find_nearest_line (boolean (*) PARAMS \
230 ((bfd *abfd, struct sec *section, \
231 struct symbol_cache_entry **symbols,bfd_vma offset, \
232 CONST char **file, CONST char **func, unsigned int *line))) bfd_false
233 #define ptrace_unix_sizeof_headers (int (*) PARAMS \
234 ((bfd *, boolean))) bfd_0
236 #define ptrace_unix_bfd_debug_info_start bfd_void
237 #define ptrace_unix_bfd_debug_info_end bfd_void
238 #define ptrace_unix_bfd_debug_info_accumulate (void (*) PARAMS \
239 ((bfd *, struct sec *))) bfd_void
240 #define ptrace_unix_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
241 #define ptrace_unix_bfd_relax_section bfd_generic_relax_section
242 #define ptrace_unix_bfd_reloc_type_lookup \
243 ((CONST struct reloc_howto_struct *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr)
244 #define ptrace_unix_bfd_make_debug_symbol \
245 ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
246 #define ptrace_unix_bfd_link_hash_table_create \
247 ((struct bfd_link_hash_table *(*) PARAMS ((bfd *))) bfd_nullvoidptr)
248 #define ptrace_unix_bfd_link_add_symbols \
249 ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
250 #define ptrace_unix_bfd_final_link \
251 ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
252 #define ptrace_unix_bfd_copy_private_section_data \
253 ((boolean (*) PARAMS ((bfd *, asection *, bfd *, asection *))) bfd_false)
254 #define ptrace_unix_bfd_copy_private_bfd_data \
255 ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_false)
256 #define ptrace_unix_bfd_is_local_label \
257 ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_false)
258 #define ptrace_unix_bfd_free_cached_info bfd_true
260 /* If somebody calls any byte-swapping routines, shoot them. */
264 abort(); /* This way doesn't require any declaration for ANSI to fuck up */
266 #define NO_GET ((bfd_vma (*) PARAMS (( const bfd_byte *))) swap_abort )
267 #define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
268 #define NO_SIGNED_GET \
269 ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort )
271 bfd_target ptrace_core_vec =
274 bfd_target_unknown_flavour,
275 true, /* target byte order */
276 true, /* target headers byte order */
277 (HAS_RELOC | EXEC_P | /* object flags */
278 HAS_LINENO | HAS_DEBUG |
279 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
280 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
281 0, /* symbol prefix */
282 ' ', /* ar_pad_char */
283 16, /* ar_max_namelen */
284 3, /* minimum alignment power */
285 NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */
286 NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */
287 NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */
288 NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */
289 NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */
290 NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */
292 { /* bfd_check_format */
293 _bfd_dummy_target, /* unknown format */
294 _bfd_dummy_target, /* object file */
295 _bfd_dummy_target, /* archive */
296 ptrace_unix_core_file_p /* a core file */
298 { /* bfd_set_format */
299 bfd_false, bfd_false,
302 { /* bfd_write_contents */
303 bfd_false, bfd_false,
307 JUMP_TABLE(ptrace_unix),
308 (PTR) 0 /* backend_data */
311 #endif /* PTRACE_CORE */