Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* BFD back end for SCO5 core files (U-area and raw sections) |
3db64b00 | 2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
edeb6e24 | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | Written by Jouke Numan <jnuman@hiscom.nl> |
5 | ||
cd123cb7 NC |
6 | This file is part of BFD, the Binary File Descriptor library. |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | MA 02110-1301, USA. */ | |
252b5132 | 22 | |
252b5132 | 23 | #include "sysdep.h" |
3db64b00 | 24 | #include "bfd.h" |
252b5132 | 25 | #include "libbfd.h" |
b34976b6 | 26 | #include "libaout.h" /* BFD a.out internal data structures */ |
252b5132 RH |
27 | |
28 | #include <stdio.h> | |
29 | #include <sys/types.h> | |
30 | #include <sys/param.h> | |
31 | #include <sys/dir.h> | |
32 | #include <signal.h> | |
33 | ||
b34976b6 | 34 | #include <sys/user.h> /* After a.out.h */ |
9b818146 | 35 | #ifdef SCO5_CORE |
252b5132 RH |
36 | #include <sys/paccess.h> |
37 | #include <sys/region.h> | |
9b818146 | 38 | #endif |
252b5132 RH |
39 | |
40 | struct sco5_core_struct | |
41 | { | |
42 | struct user u; | |
43 | }; | |
44 | ||
45 | /* forward declarations */ | |
46 | ||
b34976b6 AM |
47 | static asection *make_bfd_asection |
48 | PARAMS ((bfd *, const char *, flagword, bfd_size_type, bfd_vma, file_ptr)); | |
252b5132 RH |
49 | static struct user *read_uarea PARAMS ((bfd *, int)); |
50 | const bfd_target *sco5_core_file_p PARAMS ((bfd *abfd)); | |
51 | char *sco5_core_file_failing_command PARAMS ((bfd *abfd)); | |
52 | int sco5_core_file_failing_signal PARAMS ((bfd *abfd)); | |
69d246d9 | 53 | #define sco5_core_file_matches_executable_p generic_core_file_matches_executable_p |
252b5132 RH |
54 | static void swap_abort PARAMS ((void)); |
55 | ||
56 | static asection * | |
eea6121a | 57 | make_bfd_asection (abfd, name, flags, size, vma, filepos) |
252b5132 RH |
58 | bfd *abfd; |
59 | const char *name; | |
60 | flagword flags; | |
eea6121a | 61 | bfd_size_type size; |
252b5132 RH |
62 | bfd_vma vma; |
63 | file_ptr filepos; | |
64 | { | |
65 | asection *asect; | |
66 | ||
117ed4f8 | 67 | asect = bfd_make_section_anyway_with_flags (abfd, name, flags); |
252b5132 RH |
68 | if (!asect) |
69 | return NULL; | |
eea6121a | 70 | asect->size = size; |
252b5132 RH |
71 | asect->vma = vma; |
72 | asect->filepos = filepos; | |
73 | asect->alignment_power = 2; | |
74 | ||
75 | return asect; | |
76 | } | |
77 | ||
252b5132 RH |
78 | static struct user * |
79 | read_uarea(abfd, filepos) | |
80 | bfd *abfd; | |
81 | int filepos; | |
82 | ||
83 | { | |
84 | struct sco5_core_struct *rawptr; | |
dc810e39 | 85 | bfd_size_type amt = sizeof (struct sco5_core_struct); |
252b5132 | 86 | |
dc810e39 | 87 | rawptr = (struct sco5_core_struct *) bfd_zmalloc (amt); |
252b5132 RH |
88 | if (rawptr == NULL) |
89 | return NULL; | |
90 | ||
91 | abfd->tdata.sco5_core_data = rawptr; | |
92 | ||
dc810e39 AM |
93 | if (bfd_seek (abfd, (file_ptr) filepos, SEEK_SET) != 0 |
94 | || bfd_bread ((void *) &rawptr->u, (bfd_size_type) sizeof rawptr->u, | |
95 | abfd) != sizeof rawptr->u) | |
252b5132 RH |
96 | { |
97 | bfd_set_error (bfd_error_wrong_format); | |
98 | return NULL; | |
99 | } | |
100 | ||
101 | /* Sanity check perhaps??? */ | |
7b82c249 | 102 | if (rawptr->u.u_dsize > 0x1000000) /* Remember, it's in pages... */ |
252b5132 RH |
103 | { |
104 | bfd_set_error (bfd_error_wrong_format); | |
105 | return NULL; | |
106 | } | |
107 | if (rawptr->u.u_ssize > 0x1000000) | |
108 | { | |
109 | bfd_set_error (bfd_error_wrong_format); | |
110 | return NULL; | |
111 | } | |
112 | return &rawptr->u; | |
113 | } | |
114 | ||
252b5132 RH |
115 | const bfd_target * |
116 | sco5_core_file_p (abfd) | |
117 | bfd *abfd; | |
118 | { | |
119 | int coffset_siz, val, nsecs, cheadoffs; | |
120 | int coresize; | |
121 | struct user *u; | |
122 | struct coreoffsets coffsets; | |
123 | struct coresecthead chead; | |
124 | char *secname; | |
125 | flagword flags; | |
126 | ||
33216455 | 127 | /* Read coreoffsets region at end of core (see core(FP)). */ |
252b5132 RH |
128 | |
129 | { | |
252b5132 | 130 | struct stat statbuf; |
33216455 | 131 | |
b677b8c0 | 132 | if (bfd_stat (abfd, &statbuf) < 0) |
3dff57e8 | 133 | return NULL; |
b677b8c0 | 134 | |
252b5132 RH |
135 | coresize = statbuf.st_size; |
136 | } | |
137 | /* Last long in core is sizeof struct coreoffsets, read it */ | |
dc810e39 AM |
138 | if ((bfd_seek (abfd, (file_ptr) (coresize - sizeof coffset_siz), |
139 | SEEK_SET) != 0) | |
140 | || bfd_bread ((void *) &coffset_siz, (bfd_size_type) sizeof coffset_siz, | |
141 | abfd) != sizeof coffset_siz) | |
252b5132 | 142 | { |
7b82c249 | 143 | bfd_set_error (bfd_error_wrong_format); |
252b5132 RH |
144 | return NULL; |
145 | } | |
146 | ||
147 | /* Use it to seek start of coreoffsets region, read it and determine | |
148 | validity */ | |
dc810e39 AM |
149 | if ((bfd_seek (abfd, (file_ptr) (coresize - coffset_siz), SEEK_SET) != 0) |
150 | || (bfd_bread ((void *) &coffsets, (bfd_size_type) sizeof coffsets, abfd) | |
252b5132 RH |
151 | != sizeof coffsets) |
152 | || ((coffsets.u_info != 1) && (coffsets.u_info != C_VERSION))) | |
153 | { | |
7b82c249 | 154 | bfd_set_error (bfd_error_wrong_format); |
252b5132 RH |
155 | return NULL; |
156 | } | |
157 | ||
7b82c249 KH |
158 | if (coffsets.u_info == 1) |
159 | { | |
252b5132 RH |
160 | /* Old version, no section heads, read info from user struct */ |
161 | ||
9e7b37b3 | 162 | u = read_uarea (abfd, coffsets.u_user); |
252b5132 | 163 | if (! u) |
9e7b37b3 | 164 | goto fail; |
252b5132 | 165 | |
7b82c249 | 166 | if (!make_bfd_asection (abfd, ".reg", SEC_HAS_CONTENTS, |
b34976b6 AM |
167 | (bfd_size_type) coffsets.u_usize, |
168 | 0 - (bfd_vma) u->u_ar0, | |
169 | (file_ptr) coffsets.u_user)) | |
9e7b37b3 | 170 | goto fail; |
7b82c249 KH |
171 | |
172 | if (!make_bfd_asection (abfd, ".data", | |
252b5132 | 173 | SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS, |
b34976b6 | 174 | ((bfd_size_type) u->u_exdata.ux_dsize |
252b5132 | 175 | + u->u_exdata.ux_bsize), |
b34976b6 AM |
176 | (bfd_vma) u->u_exdata.ux_datorg, |
177 | (file_ptr) coffsets.u_data)) | |
9e7b37b3 | 178 | goto fail; |
7b82c249 KH |
179 | |
180 | if (!make_bfd_asection (abfd, ".stack", | |
181 | SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS, | |
b34976b6 AM |
182 | (bfd_size_type) u->u_ssize * NBPC, |
183 | (bfd_vma) u->u_sub, | |
184 | (file_ptr) coffsets.u_stack)) | |
9e7b37b3 | 185 | goto fail; |
252b5132 RH |
186 | |
187 | return abfd->xvec; /* Done for version 1 */ | |
7b82c249 | 188 | } |
252b5132 RH |
189 | |
190 | /* Immediately before coreoffsets region is a long with offset in core | |
191 | to first coresecthead (CORES_OFFSETS), the long before this is the | |
192 | number of section heads in the list. Read both longs and read the | |
193 | coresecthead and check its validity */ | |
7b82c249 KH |
194 | |
195 | if ((bfd_seek (abfd, | |
dc810e39 | 196 | (file_ptr) (coresize - coffset_siz - 2 * sizeof coffset_siz), |
252b5132 | 197 | SEEK_SET) != 0) |
dc810e39 AM |
198 | || (bfd_bread ((void *) &nsecs, (bfd_size_type) sizeof nsecs, abfd) |
199 | != sizeof nsecs) | |
200 | || (bfd_bread ((void *) &cheadoffs, (bfd_size_type) sizeof cheadoffs, | |
201 | abfd) != sizeof cheadoffs) | |
202 | || (bfd_seek (abfd, (file_ptr) cheadoffs, SEEK_SET) != 0) | |
203 | || (bfd_bread ((void *) &chead, (bfd_size_type) sizeof chead, abfd) | |
204 | != sizeof chead) | |
252b5132 RH |
205 | || (chead.cs_stype != CORES_OFFSETS) |
206 | || (chead.cs_x.csx_magic != COREMAGIC_NUMBER)) | |
207 | { | |
208 | bfd_set_error (bfd_error_wrong_format); | |
9e7b37b3 | 209 | goto fail; |
252b5132 RH |
210 | } |
211 | ||
212 | /* OK, we believe you. You're a core file (sure, sure). */ | |
213 | ||
214 | /* Now loop over all regions and map them */ | |
215 | nsecs--; /* We've seen CORES_OFFSETS already */ | |
7b82c249 | 216 | for (; nsecs; nsecs--) |
252b5132 | 217 | { |
dc810e39 AM |
218 | if ((bfd_seek (abfd, (file_ptr) chead.cs_hseek, SEEK_SET) != 0) |
219 | || (bfd_bread ((void *) &chead, (bfd_size_type) sizeof chead, abfd) | |
220 | != sizeof chead)) | |
b34976b6 AM |
221 | { |
222 | bfd_set_error (bfd_error_wrong_format); | |
9e7b37b3 | 223 | goto fail; |
b34976b6 | 224 | } |
252b5132 | 225 | |
7b82c249 | 226 | switch (chead.cs_stype) |
252b5132 RH |
227 | { |
228 | case CORES_MAGIC: /* Core header, check magic */ | |
229 | if (chead.cs_x.csx_magic != COREMAGIC_NUMBER) | |
230 | { | |
231 | bfd_set_error (bfd_error_wrong_format); | |
9e7b37b3 | 232 | goto fail; |
252b5132 RH |
233 | } |
234 | secname = NULL; | |
235 | nsecs++; /* MAGIC not in section cnt!*/ | |
236 | break; | |
237 | case CORES_UAREA: /* U-area, read in tdata */ | |
9e7b37b3 | 238 | u = read_uarea (abfd, chead.cs_sseek); |
252b5132 | 239 | if (! u) |
9e7b37b3 | 240 | goto fail; |
252b5132 | 241 | |
b34976b6 | 242 | /* This is tricky. As the "register section", we give them |
252b5132 RH |
243 | the entire upage and stack. u.u_ar0 points to where |
244 | "register 0" is stored. There are two tricks with this, | |
245 | though. One is that the rest of the registers might be | |
246 | at positive or negative (or both) displacements from | |
247 | *u_ar0. The other is that u_ar0 is sometimes an absolute | |
248 | address in kernel memory, and on other systems it is an | |
249 | offset from the beginning of the `struct user'. | |
7b82c249 | 250 | |
252b5132 RH |
251 | As a practical matter, we don't know where the registers |
252 | actually are, so we have to pass the whole area to GDB. | |
253 | We encode the value of u_ar0 by setting the .regs section | |
254 | up so that its virtual memory address 0 is at the place | |
255 | pointed to by u_ar0 (by setting the vma of the start of | |
256 | the section to -u_ar0). GDB uses this info to locate the | |
257 | regs, using minor trickery to get around the | |
7b82c249 | 258 | offset-or-absolute-addr problem. */ |
252b5132 RH |
259 | |
260 | chead.cs_vaddr = 0 - (bfd_vma) u->u_ar0; | |
261 | ||
b34976b6 AM |
262 | secname = ".reg"; |
263 | flags = SEC_HAS_CONTENTS; | |
252b5132 | 264 | |
b34976b6 | 265 | break; |
252b5132 RH |
266 | case CORES_PREGION: /* A program region, map it */ |
267 | switch (chead.cs_x.csx_preg.csxp_rtyp) | |
268 | { | |
269 | case PT_DATA: | |
b34976b6 | 270 | secname = ".data"; /* Data region. */ |
252b5132 RH |
271 | break; |
272 | case PT_STACK: | |
b34976b6 | 273 | secname = ".stack"; /* Stack region. */ |
252b5132 RH |
274 | break; |
275 | case PT_SHMEM: | |
b34976b6 | 276 | secname = ".shmem"; /* Shared memory */ |
252b5132 RH |
277 | break; |
278 | case PT_LIBDAT: | |
b34976b6 | 279 | secname = ".libdat"; /* Shared library data */ |
252b5132 RH |
280 | break; |
281 | case PT_V86: | |
b34976b6 | 282 | secname = ".virt86"; /* Virtual 8086 mode */ |
252b5132 RH |
283 | break; |
284 | case PT_SHFIL: | |
b34976b6 | 285 | secname = ".mmfile"; /* Memory mapped file */ |
252b5132 RH |
286 | break; |
287 | case PT_XDATA0: | |
b34976b6 | 288 | secname = ".Xdat0"; /* XENIX data region, virtual 0 */ |
252b5132 RH |
289 | break; |
290 | default: | |
291 | secname = ""; | |
292 | } | |
293 | flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; | |
294 | break; | |
295 | case CORES_PROC: /* struct proc */ | |
296 | case CORES_ITIMER: /* interval timers */ | |
297 | case CORES_SCOUTSNAME: /* struct scoutsname */ | |
298 | secname = NULL; /* Ignore these */ | |
299 | break; | |
b34976b6 AM |
300 | default: |
301 | (*_bfd_error_handler) ("Unhandled SCO core file section type %d\n", | |
302 | chead.cs_stype); | |
303 | continue; | |
304 | } | |
252b5132 RH |
305 | |
306 | if (secname | |
307 | && !make_bfd_asection (abfd, secname, flags, | |
308 | (bfd_size_type) chead.cs_vsize, | |
309 | (bfd_vma) chead.cs_vaddr, | |
310 | (file_ptr) chead.cs_sseek)) | |
9e7b37b3 | 311 | goto fail; |
252b5132 RH |
312 | |
313 | } | |
314 | ||
315 | return abfd->xvec; | |
316 | ||
9e7b37b3 AM |
317 | fail: |
318 | if (abfd->tdata.any) | |
319 | { | |
320 | bfd_release (abfd, abfd->tdata.any); | |
321 | abfd->tdata.any = NULL; | |
322 | } | |
323 | bfd_section_list_clear (abfd); | |
324 | return NULL; | |
252b5132 RH |
325 | } |
326 | ||
327 | char * | |
328 | sco5_core_file_failing_command (abfd) | |
329 | bfd *abfd; | |
330 | { | |
331 | char *com = abfd->tdata.sco5_core_data->u.u_comm; | |
332 | if (*com) | |
333 | return com; | |
334 | else | |
335 | return NULL; | |
336 | } | |
337 | ||
252b5132 RH |
338 | int |
339 | sco5_core_file_failing_signal (ignore_abfd) | |
340 | bfd *ignore_abfd; | |
341 | { | |
7b82c249 KH |
342 | return ((ignore_abfd->tdata.sco5_core_data->u.u_sysabort != 0) |
343 | ? ignore_abfd->tdata.sco5_core_data->u.u_sysabort | |
252b5132 RH |
344 | : -1); |
345 | } | |
346 | ||
252b5132 RH |
347 | /* If somebody calls any byte-swapping routines, shoot them. */ |
348 | static void | |
7b82c249 | 349 | swap_abort () |
252b5132 | 350 | { |
7b82c249 | 351 | abort (); /* This way doesn't require any declaration for ANSI to fuck up */ |
252b5132 | 352 | } |
8ce8c090 | 353 | |
edeb6e24 AM |
354 | #define NO_GET ((bfd_vma (*) (const void *)) swap_abort) |
355 | #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) | |
356 | #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) | |
8ce8c090 AM |
357 | #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort) |
358 | #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort) | |
359 | #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort) | |
252b5132 RH |
360 | |
361 | const bfd_target sco5_core_vec = | |
362 | { | |
363 | "sco5-core", | |
364 | bfd_target_unknown_flavour, | |
b34976b6 AM |
365 | BFD_ENDIAN_LITTLE, /* target byte order */ |
366 | BFD_ENDIAN_LITTLE, /* target headers byte order */ | |
367 | (HAS_RELOC | EXEC_P | /* object flags */ | |
252b5132 RH |
368 | HAS_LINENO | HAS_DEBUG | |
369 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), | |
370 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ | |
b34976b6 AM |
371 | 0, /* symbol prefix */ |
372 | ' ', /* ar_pad_char */ | |
373 | 16, /* ar_max_namelen */ | |
8ce8c090 | 374 | NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data */ |
edeb6e24 AM |
375 | NO_GET, NO_GETS, NO_PUT, /* 32 bit data */ |
376 | NO_GET, NO_GETS, NO_PUT, /* 16 bit data */ | |
8ce8c090 | 377 | NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs */ |
edeb6e24 AM |
378 | NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs */ |
379 | NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs */ | |
b34976b6 AM |
380 | |
381 | { /* bfd_check_format */ | |
8ce8c090 AM |
382 | _bfd_dummy_target, /* unknown format */ |
383 | _bfd_dummy_target, /* object file */ | |
384 | _bfd_dummy_target, /* archive */ | |
385 | sco5_core_file_p /* a core file */ | |
252b5132 | 386 | }, |
b34976b6 | 387 | { /* bfd_set_format */ |
8ce8c090 AM |
388 | bfd_false, bfd_false, |
389 | bfd_false, bfd_false | |
252b5132 | 390 | }, |
b34976b6 | 391 | { /* bfd_write_contents */ |
8ce8c090 AM |
392 | bfd_false, bfd_false, |
393 | bfd_false, bfd_false | |
252b5132 RH |
394 | }, |
395 | ||
3f3c5c34 AM |
396 | BFD_JUMP_TABLE_GENERIC (_bfd_generic), |
397 | BFD_JUMP_TABLE_COPY (_bfd_generic), | |
398 | BFD_JUMP_TABLE_CORE (sco5), | |
399 | BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), | |
400 | BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), | |
401 | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), | |
402 | BFD_JUMP_TABLE_WRITE (_bfd_generic), | |
403 | BFD_JUMP_TABLE_LINK (_bfd_nolink), | |
404 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), | |
252b5132 | 405 | |
c3c89269 | 406 | NULL, |
7b82c249 | 407 | |
b34976b6 | 408 | (PTR) 0 /* backend_data */ |
8ce8c090 | 409 | }; |