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252b5132 | 1 | /* BFD back-end for HPPA BSD core files. |
7898deda NC |
2 | Copyright 1993, 1994, 1995, 1998, 1999, 2001 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
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 | Written by the Center for Software Science at the University of Utah | |
3fde5a36 | 22 | and by Cygnus Support. |
252b5132 RH |
23 | |
24 | The core file structure for the Utah 4.3BSD and OSF1 ports on the | |
25 | PA is a mix between traditional cores and hpux cores -- just | |
26 | different enough that supporting this format would tend to add | |
27 | gross hacks to trad-core.c or hpux-core.c. So instead we keep any | |
28 | gross hacks isolated to this file. */ | |
252b5132 RH |
29 | |
30 | /* This file can only be compiled on systems which use HPPA-BSD style | |
31 | core files. | |
32 | ||
33 | I would not expect this to be of use to any other host/target, but | |
34 | you never know. */ | |
35 | ||
36 | #include "bfd.h" | |
37 | #include "sysdep.h" | |
38 | #include "libbfd.h" | |
39 | ||
40 | #if defined (HOST_HPPABSD) | |
41 | ||
42 | #include "machine/vmparam.h" | |
43 | ||
44 | #include <sys/param.h> | |
45 | #include <sys/dir.h> | |
46 | #include <signal.h> | |
47 | #include <machine/reg.h> | |
48 | #include <sys/user.h> /* After a.out.h */ | |
49 | #include <sys/file.h> | |
50 | ||
51 | static asection *make_bfd_asection PARAMS ((bfd *, CONST char *, | |
52 | flagword, bfd_size_type, | |
53 | file_ptr, unsigned int)); | |
54 | static asymbol *hppabsd_core_make_empty_symbol PARAMS ((bfd *)); | |
55 | static const bfd_target *hppabsd_core_core_file_p PARAMS ((bfd *)); | |
56 | static char *hppabsd_core_core_file_failing_command PARAMS ((bfd *)); | |
57 | static int hppabsd_core_core_file_failing_signal PARAMS ((bfd *)); | |
58 | static boolean hppabsd_core_core_file_matches_executable_p | |
59 | PARAMS ((bfd *, bfd *)); | |
60 | static void swap_abort PARAMS ((void)); | |
61 | ||
62 | /* These are stored in the bfd's tdata. */ | |
63 | ||
64 | struct hppabsd_core_struct | |
65 | { | |
66 | int sig; | |
67 | char cmd[MAXCOMLEN + 1]; | |
68 | asection *data_section; | |
69 | asection *stack_section; | |
70 | asection *reg_section; | |
71 | }; | |
72 | ||
73 | #define core_hdr(bfd) ((bfd)->tdata.hppabsd_core_data) | |
74 | #define core_signal(bfd) (core_hdr(bfd)->sig) | |
75 | #define core_command(bfd) (core_hdr(bfd)->cmd) | |
76 | #define core_datasec(bfd) (core_hdr(bfd)->data_section) | |
77 | #define core_stacksec(bfd) (core_hdr(bfd)->stack_section) | |
78 | #define core_regsec(bfd) (core_hdr(bfd)->reg_section) | |
79 | ||
80 | static asection * | |
81 | make_bfd_asection (abfd, name, flags, _raw_size, offset, alignment_power) | |
82 | bfd *abfd; | |
83 | CONST char *name; | |
84 | flagword flags; | |
85 | bfd_size_type _raw_size; | |
86 | file_ptr offset; | |
87 | unsigned int alignment_power; | |
88 | { | |
89 | asection *asect; | |
90 | ||
91 | asect = bfd_make_section (abfd, name); | |
92 | if (!asect) | |
93 | return NULL; | |
94 | ||
95 | asect->flags = flags; | |
96 | asect->_raw_size = _raw_size; | |
97 | asect->filepos = offset; | |
98 | asect->alignment_power = alignment_power; | |
99 | ||
100 | return asect; | |
101 | } | |
102 | ||
103 | static asymbol * | |
104 | hppabsd_core_make_empty_symbol (abfd) | |
105 | bfd *abfd; | |
106 | { | |
107 | asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol)); | |
108 | if (new) | |
109 | new->the_bfd = abfd; | |
110 | return new; | |
111 | } | |
112 | ||
113 | static const bfd_target * | |
114 | hppabsd_core_core_file_p (abfd) | |
115 | bfd *abfd; | |
116 | { | |
117 | int val; | |
118 | struct user u; | |
119 | struct hppabsd_core_struct *coredata; | |
120 | int clicksz; | |
121 | ||
122 | /* Try to read in the u-area. We will need information from this | |
123 | to know how to grok the rest of the core structures. */ | |
124 | val = bfd_read ((void *) &u, 1, sizeof u, abfd); | |
125 | if (val != sizeof u) | |
126 | { | |
127 | if (bfd_get_error () != bfd_error_system_call) | |
128 | bfd_set_error (bfd_error_wrong_format); | |
129 | return NULL; | |
130 | } | |
131 | ||
132 | /* Get the page size out of the u structure. This will be different | |
133 | for PA 1.0 machines and PA 1.1 machines. Yuk! */ | |
134 | clicksz = u.u_pcb.pcb_pgsz; | |
135 | ||
136 | /* clicksz must be a power of two >= 2k. */ | |
137 | if (clicksz < 0x800 | |
138 | || clicksz != (clicksz & -clicksz)) | |
139 | { | |
140 | bfd_set_error (bfd_error_wrong_format); | |
141 | return NULL; | |
142 | } | |
143 | ||
252b5132 RH |
144 | /* Sanity checks. Make sure the size of the core file matches the |
145 | the size computed from information within the core itself. */ | |
146 | { | |
147 | FILE *stream = bfd_cache_lookup (abfd); | |
148 | struct stat statbuf; | |
149 | if (stream == NULL || fstat (fileno (stream), &statbuf) < 0) | |
150 | { | |
151 | bfd_set_error (bfd_error_system_call); | |
152 | return NULL; | |
153 | } | |
154 | if (NBPG * (UPAGES + u.u_dsize + u.u_ssize) > statbuf.st_size) | |
155 | { | |
156 | bfd_set_error (bfd_error_file_truncated); | |
157 | return NULL; | |
158 | } | |
159 | if (clicksz * (UPAGES + u.u_dsize + u.u_ssize) < statbuf.st_size) | |
160 | { | |
161 | /* The file is too big. Maybe it's not a core file | |
162 | or we otherwise have bad values for u_dsize and u_ssize). */ | |
163 | bfd_set_error (bfd_error_wrong_format); | |
164 | return NULL; | |
165 | } | |
166 | } | |
167 | ||
168 | /* OK, we believe you. You're a core file (sure, sure). */ | |
169 | ||
170 | coredata = (struct hppabsd_core_struct *) | |
171 | bfd_zalloc (abfd, sizeof (struct hppabsd_core_struct)); | |
172 | if (!coredata) | |
173 | return NULL; | |
174 | ||
175 | /* Make the core data and available via the tdata part of the BFD. */ | |
176 | abfd->tdata.hppabsd_core_data = coredata; | |
177 | ||
178 | /* Create the sections. */ | |
179 | core_stacksec (abfd) = make_bfd_asection (abfd, ".stack", | |
180 | SEC_ALLOC + SEC_HAS_CONTENTS, | |
181 | clicksz * u.u_ssize, | |
3fde5a36 | 182 | NBPG * (USIZE + KSTAKSIZE) |
252b5132 | 183 | + clicksz * u.u_dsize, 2); |
3fde5a36 | 184 | core_stacksec (abfd)->vma = USRSTACK; |
252b5132 RH |
185 | |
186 | core_datasec (abfd) = make_bfd_asection (abfd, ".data", | |
187 | SEC_ALLOC + SEC_LOAD | |
188 | + SEC_HAS_CONTENTS, | |
189 | clicksz * u.u_dsize, | |
190 | NBPG * (USIZE + KSTAKSIZE), 2); | |
191 | core_datasec (abfd)->vma = UDATASEG; | |
192 | ||
193 | core_regsec (abfd) = make_bfd_asection (abfd, ".reg", | |
194 | SEC_HAS_CONTENTS, | |
195 | KSTAKSIZE * NBPG, | |
196 | NBPG * USIZE, 2); | |
197 | core_regsec (abfd)->vma = 0; | |
198 | ||
199 | strncpy (core_command (abfd), u.u_comm, MAXCOMLEN + 1); | |
200 | core_signal (abfd) = u.u_code; | |
201 | return abfd->xvec; | |
202 | } | |
203 | ||
204 | static char * | |
205 | hppabsd_core_core_file_failing_command (abfd) | |
206 | bfd *abfd; | |
207 | { | |
208 | return core_command (abfd); | |
209 | } | |
210 | ||
211 | /* ARGSUSED */ | |
212 | static int | |
213 | hppabsd_core_core_file_failing_signal (abfd) | |
214 | bfd *abfd; | |
215 | { | |
216 | return core_signal (abfd); | |
217 | } | |
218 | ||
219 | /* ARGSUSED */ | |
220 | static boolean | |
221 | hppabsd_core_core_file_matches_executable_p (core_bfd, exec_bfd) | |
222 | bfd *core_bfd, *exec_bfd; | |
223 | { | |
224 | /* There's no way to know this... */ | |
225 | return true; | |
226 | } | |
252b5132 RH |
227 | \f |
228 | #define hppabsd_core_get_symtab_upper_bound \ | |
229 | _bfd_nosymbols_get_symtab_upper_bound | |
230 | #define hppabsd_core_get_symtab _bfd_nosymbols_get_symtab | |
231 | #define hppabsd_core_print_symbol _bfd_nosymbols_print_symbol | |
232 | #define hppabsd_core_get_symbol_info _bfd_nosymbols_get_symbol_info | |
233 | #define hppabsd_core_bfd_is_local_label_name \ | |
234 | _bfd_nosymbols_bfd_is_local_label_name | |
235 | #define hppabsd_core_get_lineno _bfd_nosymbols_get_lineno | |
236 | #define hppabsd_core_find_nearest_line _bfd_nosymbols_find_nearest_line | |
237 | #define hppabsd_core_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol | |
238 | #define hppabsd_core_read_minisymbols _bfd_nosymbols_read_minisymbols | |
239 | #define hppabsd_core_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol | |
240 | ||
241 | /* If somebody calls any byte-swapping routines, shoot them. */ | |
242 | static void | |
243 | swap_abort () | |
244 | { | |
245 | /* This way doesn't require any declaration for ANSI to fuck up. */ | |
3fde5a36 | 246 | abort (); |
252b5132 RH |
247 | } |
248 | ||
249 | #define NO_GET ((bfd_vma (*) PARAMS (( const bfd_byte *))) swap_abort ) | |
250 | #define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort ) | |
251 | #define NO_SIGNED_GET \ | |
252 | ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort ) | |
253 | ||
254 | const bfd_target hppabsd_core_vec = | |
255 | { | |
256 | "hppabsd-core", | |
257 | bfd_target_unknown_flavour, | |
258 | BFD_ENDIAN_BIG, /* target byte order */ | |
259 | BFD_ENDIAN_BIG, /* target headers byte order */ | |
260 | (HAS_RELOC | EXEC_P | /* object flags */ | |
261 | HAS_LINENO | HAS_DEBUG | | |
262 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), | |
263 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ | |
264 | 0, /* symbol prefix */ | |
265 | ' ', /* ar_pad_char */ | |
266 | 16, /* ar_max_namelen */ | |
267 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */ | |
268 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */ | |
269 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */ | |
270 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */ | |
271 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */ | |
272 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */ | |
273 | ||
274 | { /* bfd_check_format */ | |
275 | _bfd_dummy_target, /* unknown format */ | |
276 | _bfd_dummy_target, /* object file */ | |
277 | _bfd_dummy_target, /* archive */ | |
278 | hppabsd_core_core_file_p /* a core file */ | |
279 | }, | |
280 | { /* bfd_set_format */ | |
281 | bfd_false, bfd_false, | |
282 | bfd_false, bfd_false | |
283 | }, | |
284 | { /* bfd_write_contents */ | |
285 | bfd_false, bfd_false, | |
286 | bfd_false, bfd_false | |
287 | }, | |
3fde5a36 | 288 | |
252b5132 RH |
289 | BFD_JUMP_TABLE_GENERIC (_bfd_generic), |
290 | BFD_JUMP_TABLE_COPY (_bfd_generic), | |
291 | BFD_JUMP_TABLE_CORE (hppabsd_core), | |
292 | BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), | |
293 | BFD_JUMP_TABLE_SYMBOLS (hppabsd_core), | |
294 | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), | |
295 | BFD_JUMP_TABLE_WRITE (_bfd_generic), | |
296 | BFD_JUMP_TABLE_LINK (_bfd_nolink), | |
297 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), | |
298 | ||
c3c89269 | 299 | NULL, |
3fde5a36 | 300 | |
252b5132 RH |
301 | (PTR) 0 /* backend_data */ |
302 | }; | |
303 | #endif |