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252b5132 RH |
1 | /* BFD back end for NetBSD style core files |
2 | Copyright 1988, 89, 91, 92, 93, 96, 1998 Free Software Foundation, Inc. | |
3 | Written by Paul Kranenburg, EUR | |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "bfd.h" | |
22 | #include "sysdep.h" | |
23 | #include "libbfd.h" | |
24 | #include "libaout.h" /* BFD a.out internal data structures */ | |
25 | ||
26 | #include <sys/param.h> | |
27 | #include <sys/dir.h> | |
28 | #include <signal.h> | |
29 | #include <sys/core.h> | |
30 | ||
31 | /* | |
32 | * FIXME: On NetBSD/sparc CORE_FPU_OFFSET should be (sizeof(struct trapframe)) | |
33 | */ | |
34 | ||
35 | struct netbsd_core_struct { | |
36 | struct core core; | |
37 | } *rawptr; | |
38 | ||
39 | /* forward declarations */ | |
40 | ||
41 | static const bfd_target * netbsd_core_file_p PARAMS ((bfd *abfd)); | |
42 | static char * netbsd_core_file_failing_command PARAMS ((bfd *abfd)); | |
43 | static int netbsd_core_file_failing_signal PARAMS ((bfd *abfd)); | |
44 | static boolean netbsd_core_file_matches_executable_p | |
45 | PARAMS ((bfd *core_bfd, bfd *exec_bfd)); | |
46 | static void swap_abort PARAMS ((void)); | |
47 | ||
48 | /* Handle NetBSD-style core dump file. */ | |
49 | ||
50 | /* ARGSUSED */ | |
51 | static const bfd_target * | |
52 | netbsd_core_file_p (abfd) | |
53 | bfd *abfd; | |
54 | ||
55 | { | |
56 | int i, val, offset; | |
57 | asection *asect, *asect2; | |
58 | struct core core; | |
59 | struct coreseg coreseg; | |
60 | ||
61 | val = bfd_read ((void *)&core, 1, sizeof core, abfd); | |
62 | if (val != sizeof core) { | |
63 | /* Too small to be a core file */ | |
64 | bfd_set_error(bfd_error_wrong_format); | |
65 | return 0; | |
66 | } | |
67 | ||
68 | if (CORE_GETMAGIC(core) != COREMAGIC) { | |
69 | bfd_set_error(bfd_error_wrong_format); | |
70 | return 0; | |
71 | } | |
72 | ||
73 | rawptr = (struct netbsd_core_struct *) | |
74 | bfd_zalloc (abfd, sizeof (struct netbsd_core_struct)); | |
75 | if (rawptr == NULL) { | |
76 | bfd_set_error(bfd_error_no_memory); | |
77 | return 0; | |
78 | } | |
79 | ||
80 | rawptr->core = core; | |
81 | abfd->tdata.netbsd_core_data = rawptr; | |
82 | ||
83 | offset = core.c_hdrsize; | |
84 | for (i = 0; i < core.c_nseg; i++) { | |
85 | ||
86 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) | |
87 | goto punt; | |
88 | ||
89 | val = bfd_read ((void *)&coreseg, 1, sizeof coreseg, abfd); | |
90 | if (val != sizeof coreseg) { | |
91 | bfd_set_error(bfd_error_file_truncated); | |
92 | goto punt; | |
93 | } | |
94 | if (CORE_GETMAGIC(coreseg) != CORESEGMAGIC) { | |
95 | bfd_set_error(bfd_error_wrong_format); | |
96 | goto punt; | |
97 | } | |
98 | ||
99 | offset += core.c_seghdrsize; | |
100 | ||
101 | asect = (asection *) bfd_zalloc (abfd, sizeof(asection)); | |
102 | if (asect == NULL) { | |
103 | bfd_set_error(bfd_error_no_memory); | |
104 | goto punt; | |
105 | } | |
106 | ||
107 | asect->_raw_size = coreseg.c_size; | |
108 | asect->vma = coreseg.c_addr; | |
109 | asect->filepos = offset; | |
110 | asect->alignment_power = 2; | |
111 | asect->next = abfd->sections; | |
112 | abfd->sections = asect; | |
113 | abfd->section_count++; | |
114 | offset += coreseg.c_size; | |
115 | ||
116 | switch (CORE_GETFLAG(coreseg)) { | |
117 | case CORE_CPU: | |
118 | asect->name = ".reg"; | |
119 | asect->flags = SEC_ALLOC + SEC_HAS_CONTENTS; | |
120 | #ifdef CORE_FPU_OFFSET | |
121 | /* Hackish... */ | |
122 | asect->_raw_size = CORE_FPU_OFFSET; | |
123 | asect2 = (asection *)bfd_zalloc (abfd, | |
124 | sizeof (asection)); | |
125 | if (asect2 == NULL) { | |
126 | bfd_set_error(bfd_error_no_memory); | |
127 | goto punt; | |
128 | } | |
129 | asect2->_raw_size = coreseg.c_size - CORE_FPU_OFFSET; | |
130 | asect2->vma = 0; | |
131 | asect2->filepos = asect->filepos + CORE_FPU_OFFSET; | |
132 | asect2->alignment_power = 2; | |
133 | asect2->next = abfd->sections; | |
134 | asect2->name = ".reg2"; | |
135 | asect2->flags = SEC_ALLOC + SEC_HAS_CONTENTS; | |
136 | abfd->sections = asect2; | |
137 | abfd->section_count++; | |
138 | #endif | |
139 | ||
140 | break; | |
141 | case CORE_DATA: | |
142 | asect->name = ".data"; | |
143 | asect->flags = SEC_ALLOC+SEC_LOAD+SEC_HAS_CONTENTS; | |
144 | break; | |
145 | case CORE_STACK: | |
146 | asect->name = ".stack"; | |
147 | asect->flags = SEC_ALLOC+SEC_LOAD+SEC_HAS_CONTENTS; | |
148 | break; | |
149 | } | |
150 | } | |
151 | ||
152 | /* OK, we believe you. You're a core file (sure, sure). */ | |
153 | return abfd->xvec; | |
154 | ||
155 | punt: { | |
156 | asection *anext; | |
157 | for (asect = abfd->sections; asect; asect = anext) { | |
158 | anext = asect->next; | |
159 | free((void *)asect); | |
160 | } | |
161 | } | |
162 | free ((void *)rawptr); | |
163 | abfd->tdata.netbsd_core_data = NULL; | |
164 | abfd->sections = NULL; | |
165 | abfd->section_count = 0; | |
166 | return 0; | |
167 | } | |
168 | ||
169 | static char* | |
170 | netbsd_core_file_failing_command (abfd) | |
171 | bfd *abfd; | |
172 | { | |
173 | /*return core_command (abfd);*/ | |
174 | return abfd->tdata.netbsd_core_data->core.c_name; | |
175 | } | |
176 | ||
177 | /* ARGSUSED */ | |
178 | static int | |
179 | netbsd_core_file_failing_signal (abfd) | |
180 | bfd *abfd; | |
181 | { | |
182 | /*return core_signal (abfd);*/ | |
183 | return abfd->tdata.netbsd_core_data->core.c_signo; | |
184 | } | |
185 | ||
186 | /* ARGSUSED */ | |
187 | static boolean | |
188 | netbsd_core_file_matches_executable_p (core_bfd, exec_bfd) | |
189 | bfd *core_bfd, *exec_bfd; | |
190 | { | |
191 | return true; /* FIXME, We have no way of telling at this point */ | |
192 | } | |
193 | \f | |
194 | /* If somebody calls any byte-swapping routines, shoot them. */ | |
195 | static void | |
196 | swap_abort() | |
197 | { | |
198 | abort(); /* This way doesn't require any declaration for ANSI to fuck up */ | |
199 | } | |
200 | #define NO_GET ((bfd_vma (*) PARAMS (( const bfd_byte *))) swap_abort ) | |
201 | #define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort ) | |
202 | #define NO_SIGNED_GET \ | |
203 | ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort ) | |
204 | ||
205 | const bfd_target netbsd_core_vec = | |
206 | { | |
207 | "netbsd-core", | |
208 | bfd_target_unknown_flavour, | |
209 | BFD_ENDIAN_UNKNOWN, /* target byte order */ | |
210 | BFD_ENDIAN_UNKNOWN, /* target headers byte order */ | |
211 | (HAS_RELOC | EXEC_P | /* object flags */ | |
212 | HAS_LINENO | HAS_DEBUG | | |
213 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), | |
214 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ | |
215 | 0, /* symbol prefix */ | |
216 | ' ', /* ar_pad_char */ | |
217 | 16, /* ar_max_namelen */ | |
218 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */ | |
219 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */ | |
220 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */ | |
221 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */ | |
222 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */ | |
223 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */ | |
224 | ||
225 | { /* bfd_check_format */ | |
226 | _bfd_dummy_target, /* unknown format */ | |
227 | _bfd_dummy_target, /* object file */ | |
228 | _bfd_dummy_target, /* archive */ | |
229 | netbsd_core_file_p /* a core file */ | |
230 | }, | |
231 | { /* bfd_set_format */ | |
232 | bfd_false, bfd_false, | |
233 | bfd_false, bfd_false | |
234 | }, | |
235 | { /* bfd_write_contents */ | |
236 | bfd_false, bfd_false, | |
237 | bfd_false, bfd_false | |
238 | }, | |
239 | ||
240 | BFD_JUMP_TABLE_GENERIC (_bfd_generic), | |
241 | BFD_JUMP_TABLE_COPY (_bfd_generic), | |
242 | BFD_JUMP_TABLE_CORE (netbsd), | |
243 | BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), | |
244 | BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), | |
245 | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), | |
246 | BFD_JUMP_TABLE_WRITE (_bfd_generic), | |
247 | BFD_JUMP_TABLE_LINK (_bfd_nolink), | |
248 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), | |
249 | ||
c3c89269 NC |
250 | NULL, |
251 | ||
252b5132 RH |
252 | (PTR) 0 /* backend_data */ |
253 | }; |