1 /* BFD back end for NetBSD style core files
2 Copyright 1988, 1989, 1991, 1992, 1993, 1996, 1998, 1999, 2000, 2001,
3 2002, 2003, 2004
4 Free Software Foundation, Inc.
5 Written by Paul Kranenburg, EUR
6
7 This file is part of BFD, the Binary File Descriptor library.
8
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.
13
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.
18
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22
23 #include "bfd.h"
24 #include "sysdep.h"
25 #include "libbfd.h"
26 #include "libaout.h" /* BFD a.out internal data structures */
27
28 #include <sys/param.h>
29 #include <sys/dir.h>
30 #include <signal.h>
31 #include <sys/core.h>
32
33 /* The machine ID for OpenBSD/sparc64 and older versions of
34 NetBSD/sparc64 overlaps with M_MIPS1. */
35 #define M_SPARC64_OPENBSD M_MIPS1
36
37 /* Offset of StackGhost cookie within `struct md_coredump' on
38 OpenBSD/sparc. */
39 #define SPARC_WCOOKIE_OFFSET 344
40
41 /* Offset of StackGhost cookie within `struct md_coredump' on
42 OpenBSD/sparc64. */
43 #define SPARC64_WCOOKIE_OFFSET 832
44
45 struct netbsd_core_struct {
46 struct core core;
47 } *rawptr;
48
49 /* forward declarations */
50
51 static const bfd_target *netbsd_core_file_p
52 PARAMS ((bfd *abfd));
53 static char *netbsd_core_file_failing_command
54 PARAMS ((bfd *abfd));
55 static int netbsd_core_file_failing_signal
56 PARAMS ((bfd *abfd));
57 static bfd_boolean netbsd_core_file_matches_executable_p
58 PARAMS ((bfd *core_bfd, bfd *exec_bfd));
59 static void swap_abort
60 PARAMS ((void));
61
62 /* Handle NetBSD-style core dump file. */
63
64 static const bfd_target *
netbsd_core_file_p(abfd)65 netbsd_core_file_p (abfd)
66 bfd *abfd;
67
68 {
69 int i, val;
70 file_ptr offset;
71 asection *asect;
72 struct core core;
73 struct coreseg coreseg;
74 bfd_size_type amt = sizeof core;
75
76 val = bfd_bread ((void *) &core, amt, abfd);
77 if (val != sizeof core)
78 {
79 /* Too small to be a core file */
80 bfd_set_error (bfd_error_wrong_format);
81 return 0;
82 }
83
84 if (CORE_GETMAGIC (core) != COREMAGIC)
85 {
86 bfd_set_error (bfd_error_wrong_format);
87 return 0;
88 }
89
90 amt = sizeof (struct netbsd_core_struct);
91 rawptr = (struct netbsd_core_struct *) bfd_zalloc (abfd, amt);
92 if (rawptr == NULL)
93 return 0;
94
95 rawptr->core = core;
96 abfd->tdata.netbsd_core_data = rawptr;
97
98 offset = core.c_hdrsize;
99 for (i = 0; i < core.c_nseg; i++)
100 {
101 const char *sname;
102 flagword flags;
103
104 if (bfd_seek (abfd, offset, SEEK_SET) != 0)
105 goto punt;
106
107 val = bfd_bread ((void *) &coreseg, (bfd_size_type) sizeof coreseg, abfd);
108 if (val != sizeof coreseg)
109 {
110 bfd_set_error (bfd_error_file_truncated);
111 goto punt;
112 }
113 if (CORE_GETMAGIC (coreseg) != CORESEGMAGIC)
114 {
115 bfd_set_error (bfd_error_wrong_format);
116 goto punt;
117 }
118
119 offset += core.c_seghdrsize;
120
121 switch (CORE_GETFLAG (coreseg))
122 {
123 case CORE_CPU:
124 sname = ".reg";
125 flags = SEC_ALLOC + SEC_HAS_CONTENTS;
126 break;
127 case CORE_DATA:
128 sname = ".data";
129 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
130 break;
131 case CORE_STACK:
132 sname = ".stack";
133 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
134 break;
135 default:
136 sname = ".unknown";
137 flags = SEC_ALLOC + SEC_HAS_CONTENTS;
138 break;
139 }
140 asect = bfd_make_section_anyway (abfd, sname);
141 if (asect == NULL)
142 goto punt;
143
144 asect->flags = flags;
145 asect->_raw_size = coreseg.c_size;
146 asect->vma = coreseg.c_addr;
147 asect->filepos = offset;
148 asect->alignment_power = 2;
149
150 if (CORE_GETFLAG (coreseg) == CORE_CPU)
151 {
152 bfd_size_type wcookie_offset;
153
154 switch (CORE_GETMID (core))
155 {
156 case M_SPARC_NETBSD:
157 wcookie_offset = SPARC_WCOOKIE_OFFSET;
158 break;
159 case M_SPARC64_OPENBSD:
160 wcookie_offset = SPARC64_WCOOKIE_OFFSET;
161 break;
162 default:
163 wcookie_offset = 0;
164 break;
165 }
166
167 if (wcookie_offset > 0 && coreseg.c_size > wcookie_offset)
168 {
169 /* Truncate the .reg section. */
170 asect->_raw_size = wcookie_offset;
171
172 /* And create the .wcookie section. */
173 asect = bfd_make_section_anyway (abfd, ".wcookie");
174 if (asect == NULL)
175 goto punt;
176
177 asect->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
178 asect->_raw_size = coreseg.c_size - wcookie_offset;
179 asect->vma = 0;
180 asect->filepos = offset + wcookie_offset;
181 asect->alignment_power = 2;
182 }
183 }
184
185 offset += coreseg.c_size;
186 }
187
188 /* Set architecture from machine ID. */
189 switch (CORE_GETMID (core))
190 {
191 case M_X86_64_NETBSD:
192 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
193 break;
194
195 case M_386_NETBSD:
196 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386);
197 break;
198
199 case M_68K_NETBSD:
200 case M_68K4K_NETBSD:
201 bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0);
202 break;
203
204 case M_88K_OPENBSD:
205 bfd_default_set_arch_mach (abfd, bfd_arch_m88k, 0);
206 break;
207
208 case M_HPPA_OPENBSD:
209 bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 0);
210 break;
211
212 case M_POWERPC_NETBSD:
213 bfd_default_set_arch_mach (abfd, bfd_arch_powerpc, bfd_mach_ppc);
214 break;
215
216 case M_SPARC_NETBSD:
217 bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
218 break;
219
220 case M_SPARC64_NETBSD:
221 case M_SPARC64_OPENBSD:
222 bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc_v9);
223 break;
224
225 case M_VAX_NETBSD:
226 case M_VAX4K_NETBSD:
227 bfd_default_set_arch_mach (abfd, bfd_arch_vax, 0);
228 break;
229 }
230
231 /* OK, we believe you. You're a core file (sure, sure). */
232 return abfd->xvec;
233
234 punt:
235 bfd_release (abfd, abfd->tdata.any);
236 abfd->tdata.any = NULL;
237 bfd_section_list_clear (abfd);
238 return 0;
239 }
240
241 static char*
netbsd_core_file_failing_command(abfd)242 netbsd_core_file_failing_command (abfd)
243 bfd *abfd;
244 {
245 /*return core_command (abfd);*/
246 return abfd->tdata.netbsd_core_data->core.c_name;
247 }
248
249 static int
netbsd_core_file_failing_signal(abfd)250 netbsd_core_file_failing_signal (abfd)
251 bfd *abfd;
252 {
253 /*return core_signal (abfd);*/
254 return abfd->tdata.netbsd_core_data->core.c_signo;
255 }
256
257 static bfd_boolean
netbsd_core_file_matches_executable_p(core_bfd,exec_bfd)258 netbsd_core_file_matches_executable_p (core_bfd, exec_bfd)
259 bfd *core_bfd ATTRIBUTE_UNUSED;
260 bfd *exec_bfd ATTRIBUTE_UNUSED;
261 {
262 return TRUE; /* FIXME, We have no way of telling at this point */
263 }
264
265 /* If somebody calls any byte-swapping routines, shoot them. */
266 static void
swap_abort()267 swap_abort ()
268 {
269 abort (); /* This way doesn't require any declaration for ANSI to fuck up */
270 }
271
272 #define NO_GET ((bfd_vma (*) (const void *)) swap_abort)
273 #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort)
274 #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort)
275 #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort)
276 #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort)
277 #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort)
278
279 const bfd_target netbsd_core_vec =
280 {
281 "netbsd-core",
282 bfd_target_unknown_flavour,
283 BFD_ENDIAN_UNKNOWN, /* target byte order */
284 BFD_ENDIAN_UNKNOWN, /* target headers byte order */
285 (HAS_RELOC | EXEC_P | /* object flags */
286 HAS_LINENO | HAS_DEBUG |
287 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
288 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
289 0, /* symbol prefix */
290 ' ', /* ar_pad_char */
291 16, /* ar_max_namelen */
292 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data. */
293 NO_GET, NO_GETS, NO_PUT, /* 32 bit data. */
294 NO_GET, NO_GETS, NO_PUT, /* 16 bit data. */
295 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs. */
296 NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs. */
297 NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs. */
298
299 { /* bfd_check_format */
300 _bfd_dummy_target, /* unknown format */
301 _bfd_dummy_target, /* object file */
302 _bfd_dummy_target, /* archive */
303 netbsd_core_file_p /* a core file */
304 },
305 { /* bfd_set_format */
306 bfd_false, bfd_false,
307 bfd_false, bfd_false
308 },
309 { /* bfd_write_contents */
310 bfd_false, bfd_false,
311 bfd_false, bfd_false
312 },
313
314 BFD_JUMP_TABLE_GENERIC (_bfd_generic),
315 BFD_JUMP_TABLE_COPY (_bfd_generic),
316 BFD_JUMP_TABLE_CORE (netbsd),
317 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
318 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
319 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
320 BFD_JUMP_TABLE_WRITE (_bfd_generic),
321 BFD_JUMP_TABLE_LINK (_bfd_nolink),
322 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
323
324 NULL,
325
326 (PTR) 0 /* backend_data */
327 };
328