Commit | Line | Data |
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252b5132 | 1 | /* BFD back end for SCO5 core files (U-area and raw sections) |
d3aeb6ee | 2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
2c3fc389 | 3 | 2010, 2011, 2012 |
edeb6e24 | 4 | Free Software Foundation, Inc. |
252b5132 RH |
5 | Written by Jouke Numan <jnuman@hiscom.nl> |
6 | ||
cd123cb7 NC |
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 3 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., 51 Franklin Street - Fifth Floor, Boston, | |
22 | MA 02110-1301, USA. */ | |
252b5132 | 23 | |
252b5132 | 24 | #include "sysdep.h" |
3db64b00 | 25 | #include "bfd.h" |
252b5132 | 26 | #include "libbfd.h" |
b34976b6 | 27 | #include "libaout.h" /* BFD a.out internal data structures */ |
252b5132 RH |
28 | |
29 | #include <stdio.h> | |
30 | #include <sys/types.h> | |
31 | #include <sys/param.h> | |
32 | #include <sys/dir.h> | |
33 | #include <signal.h> | |
34 | ||
b34976b6 | 35 | #include <sys/user.h> /* After a.out.h */ |
9b818146 | 36 | #ifdef SCO5_CORE |
252b5132 RH |
37 | #include <sys/paccess.h> |
38 | #include <sys/region.h> | |
9b818146 | 39 | #endif |
252b5132 RH |
40 | |
41 | struct sco5_core_struct | |
42 | { | |
43 | struct user u; | |
44 | }; | |
45 | ||
46 | /* forward declarations */ | |
47 | ||
69d246d9 | 48 | #define sco5_core_file_matches_executable_p generic_core_file_matches_executable_p |
261b8d08 | 49 | #define sco5_core_file_pid _bfd_nocore_core_file_pid |
252b5132 RH |
50 | |
51 | static asection * | |
2c3fc389 NC |
52 | make_bfd_asection (bfd *abfd, |
53 | const char *name, | |
54 | flagword flags, | |
55 | bfd_size_type size, | |
56 | bfd_vma vma, | |
57 | file_ptr filepos) | |
252b5132 RH |
58 | { |
59 | asection *asect; | |
60 | ||
117ed4f8 | 61 | asect = bfd_make_section_anyway_with_flags (abfd, name, flags); |
252b5132 RH |
62 | if (!asect) |
63 | return NULL; | |
eea6121a | 64 | asect->size = size; |
252b5132 RH |
65 | asect->vma = vma; |
66 | asect->filepos = filepos; | |
67 | asect->alignment_power = 2; | |
68 | ||
69 | return asect; | |
70 | } | |
71 | ||
252b5132 | 72 | static struct user * |
2c3fc389 | 73 | read_uarea (bfd *abfd, int filepos) |
252b5132 RH |
74 | { |
75 | struct sco5_core_struct *rawptr; | |
dc810e39 | 76 | bfd_size_type amt = sizeof (struct sco5_core_struct); |
252b5132 | 77 | |
dc810e39 | 78 | rawptr = (struct sco5_core_struct *) bfd_zmalloc (amt); |
252b5132 RH |
79 | if (rawptr == NULL) |
80 | return NULL; | |
81 | ||
82 | abfd->tdata.sco5_core_data = rawptr; | |
83 | ||
dc810e39 AM |
84 | if (bfd_seek (abfd, (file_ptr) filepos, SEEK_SET) != 0 |
85 | || bfd_bread ((void *) &rawptr->u, (bfd_size_type) sizeof rawptr->u, | |
86 | abfd) != sizeof rawptr->u) | |
252b5132 RH |
87 | { |
88 | bfd_set_error (bfd_error_wrong_format); | |
89 | return NULL; | |
90 | } | |
91 | ||
92 | /* Sanity check perhaps??? */ | |
7b82c249 | 93 | if (rawptr->u.u_dsize > 0x1000000) /* Remember, it's in pages... */ |
252b5132 RH |
94 | { |
95 | bfd_set_error (bfd_error_wrong_format); | |
96 | return NULL; | |
97 | } | |
98 | if (rawptr->u.u_ssize > 0x1000000) | |
99 | { | |
100 | bfd_set_error (bfd_error_wrong_format); | |
101 | return NULL; | |
102 | } | |
103 | return &rawptr->u; | |
104 | } | |
105 | ||
252b5132 | 106 | const bfd_target * |
2c3fc389 | 107 | sco5_core_file_p (bfd *abfd) |
252b5132 RH |
108 | { |
109 | int coffset_siz, val, nsecs, cheadoffs; | |
110 | int coresize; | |
111 | struct user *u; | |
112 | struct coreoffsets coffsets; | |
113 | struct coresecthead chead; | |
114 | char *secname; | |
115 | flagword flags; | |
116 | ||
33216455 | 117 | /* Read coreoffsets region at end of core (see core(FP)). */ |
252b5132 RH |
118 | |
119 | { | |
252b5132 | 120 | struct stat statbuf; |
33216455 | 121 | |
b677b8c0 | 122 | if (bfd_stat (abfd, &statbuf) < 0) |
3dff57e8 | 123 | return NULL; |
b677b8c0 | 124 | |
252b5132 RH |
125 | coresize = statbuf.st_size; |
126 | } | |
127 | /* Last long in core is sizeof struct coreoffsets, read it */ | |
dc810e39 AM |
128 | if ((bfd_seek (abfd, (file_ptr) (coresize - sizeof coffset_siz), |
129 | SEEK_SET) != 0) | |
130 | || bfd_bread ((void *) &coffset_siz, (bfd_size_type) sizeof coffset_siz, | |
131 | abfd) != sizeof coffset_siz) | |
252b5132 | 132 | { |
7b82c249 | 133 | bfd_set_error (bfd_error_wrong_format); |
252b5132 RH |
134 | return NULL; |
135 | } | |
136 | ||
137 | /* Use it to seek start of coreoffsets region, read it and determine | |
138 | validity */ | |
dc810e39 AM |
139 | if ((bfd_seek (abfd, (file_ptr) (coresize - coffset_siz), SEEK_SET) != 0) |
140 | || (bfd_bread ((void *) &coffsets, (bfd_size_type) sizeof coffsets, abfd) | |
252b5132 RH |
141 | != sizeof coffsets) |
142 | || ((coffsets.u_info != 1) && (coffsets.u_info != C_VERSION))) | |
143 | { | |
7b82c249 | 144 | bfd_set_error (bfd_error_wrong_format); |
252b5132 RH |
145 | return NULL; |
146 | } | |
147 | ||
7b82c249 KH |
148 | if (coffsets.u_info == 1) |
149 | { | |
252b5132 RH |
150 | /* Old version, no section heads, read info from user struct */ |
151 | ||
9e7b37b3 | 152 | u = read_uarea (abfd, coffsets.u_user); |
252b5132 | 153 | if (! u) |
9e7b37b3 | 154 | goto fail; |
252b5132 | 155 | |
7b82c249 | 156 | if (!make_bfd_asection (abfd, ".reg", SEC_HAS_CONTENTS, |
b34976b6 AM |
157 | (bfd_size_type) coffsets.u_usize, |
158 | 0 - (bfd_vma) u->u_ar0, | |
159 | (file_ptr) coffsets.u_user)) | |
9e7b37b3 | 160 | goto fail; |
7b82c249 KH |
161 | |
162 | if (!make_bfd_asection (abfd, ".data", | |
252b5132 | 163 | SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS, |
b34976b6 | 164 | ((bfd_size_type) u->u_exdata.ux_dsize |
252b5132 | 165 | + u->u_exdata.ux_bsize), |
b34976b6 AM |
166 | (bfd_vma) u->u_exdata.ux_datorg, |
167 | (file_ptr) coffsets.u_data)) | |
9e7b37b3 | 168 | goto fail; |
7b82c249 KH |
169 | |
170 | if (!make_bfd_asection (abfd, ".stack", | |
171 | SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS, | |
b34976b6 AM |
172 | (bfd_size_type) u->u_ssize * NBPC, |
173 | (bfd_vma) u->u_sub, | |
174 | (file_ptr) coffsets.u_stack)) | |
9e7b37b3 | 175 | goto fail; |
252b5132 RH |
176 | |
177 | return abfd->xvec; /* Done for version 1 */ | |
7b82c249 | 178 | } |
252b5132 RH |
179 | |
180 | /* Immediately before coreoffsets region is a long with offset in core | |
181 | to first coresecthead (CORES_OFFSETS), the long before this is the | |
182 | number of section heads in the list. Read both longs and read the | |
183 | coresecthead and check its validity */ | |
7b82c249 KH |
184 | |
185 | if ((bfd_seek (abfd, | |
dc810e39 | 186 | (file_ptr) (coresize - coffset_siz - 2 * sizeof coffset_siz), |
252b5132 | 187 | SEEK_SET) != 0) |
dc810e39 AM |
188 | || (bfd_bread ((void *) &nsecs, (bfd_size_type) sizeof nsecs, abfd) |
189 | != sizeof nsecs) | |
190 | || (bfd_bread ((void *) &cheadoffs, (bfd_size_type) sizeof cheadoffs, | |
191 | abfd) != sizeof cheadoffs) | |
192 | || (bfd_seek (abfd, (file_ptr) cheadoffs, SEEK_SET) != 0) | |
193 | || (bfd_bread ((void *) &chead, (bfd_size_type) sizeof chead, abfd) | |
194 | != sizeof chead) | |
252b5132 RH |
195 | || (chead.cs_stype != CORES_OFFSETS) |
196 | || (chead.cs_x.csx_magic != COREMAGIC_NUMBER)) | |
197 | { | |
198 | bfd_set_error (bfd_error_wrong_format); | |
9e7b37b3 | 199 | goto fail; |
252b5132 RH |
200 | } |
201 | ||
202 | /* OK, we believe you. You're a core file (sure, sure). */ | |
203 | ||
204 | /* Now loop over all regions and map them */ | |
205 | nsecs--; /* We've seen CORES_OFFSETS already */ | |
7b82c249 | 206 | for (; nsecs; nsecs--) |
252b5132 | 207 | { |
dc810e39 AM |
208 | if ((bfd_seek (abfd, (file_ptr) chead.cs_hseek, SEEK_SET) != 0) |
209 | || (bfd_bread ((void *) &chead, (bfd_size_type) sizeof chead, abfd) | |
210 | != sizeof chead)) | |
b34976b6 AM |
211 | { |
212 | bfd_set_error (bfd_error_wrong_format); | |
9e7b37b3 | 213 | goto fail; |
b34976b6 | 214 | } |
252b5132 | 215 | |
7b82c249 | 216 | switch (chead.cs_stype) |
252b5132 RH |
217 | { |
218 | case CORES_MAGIC: /* Core header, check magic */ | |
219 | if (chead.cs_x.csx_magic != COREMAGIC_NUMBER) | |
220 | { | |
221 | bfd_set_error (bfd_error_wrong_format); | |
9e7b37b3 | 222 | goto fail; |
252b5132 RH |
223 | } |
224 | secname = NULL; | |
225 | nsecs++; /* MAGIC not in section cnt!*/ | |
226 | break; | |
227 | case CORES_UAREA: /* U-area, read in tdata */ | |
9e7b37b3 | 228 | u = read_uarea (abfd, chead.cs_sseek); |
252b5132 | 229 | if (! u) |
9e7b37b3 | 230 | goto fail; |
252b5132 | 231 | |
b34976b6 | 232 | /* This is tricky. As the "register section", we give them |
252b5132 RH |
233 | the entire upage and stack. u.u_ar0 points to where |
234 | "register 0" is stored. There are two tricks with this, | |
235 | though. One is that the rest of the registers might be | |
236 | at positive or negative (or both) displacements from | |
237 | *u_ar0. The other is that u_ar0 is sometimes an absolute | |
238 | address in kernel memory, and on other systems it is an | |
239 | offset from the beginning of the `struct user'. | |
7b82c249 | 240 | |
252b5132 RH |
241 | As a practical matter, we don't know where the registers |
242 | actually are, so we have to pass the whole area to GDB. | |
243 | We encode the value of u_ar0 by setting the .regs section | |
244 | up so that its virtual memory address 0 is at the place | |
245 | pointed to by u_ar0 (by setting the vma of the start of | |
246 | the section to -u_ar0). GDB uses this info to locate the | |
247 | regs, using minor trickery to get around the | |
7b82c249 | 248 | offset-or-absolute-addr problem. */ |
252b5132 RH |
249 | |
250 | chead.cs_vaddr = 0 - (bfd_vma) u->u_ar0; | |
251 | ||
b34976b6 AM |
252 | secname = ".reg"; |
253 | flags = SEC_HAS_CONTENTS; | |
252b5132 | 254 | |
b34976b6 | 255 | break; |
252b5132 RH |
256 | case CORES_PREGION: /* A program region, map it */ |
257 | switch (chead.cs_x.csx_preg.csxp_rtyp) | |
258 | { | |
259 | case PT_DATA: | |
b34976b6 | 260 | secname = ".data"; /* Data region. */ |
252b5132 RH |
261 | break; |
262 | case PT_STACK: | |
b34976b6 | 263 | secname = ".stack"; /* Stack region. */ |
252b5132 RH |
264 | break; |
265 | case PT_SHMEM: | |
b34976b6 | 266 | secname = ".shmem"; /* Shared memory */ |
252b5132 RH |
267 | break; |
268 | case PT_LIBDAT: | |
b34976b6 | 269 | secname = ".libdat"; /* Shared library data */ |
252b5132 RH |
270 | break; |
271 | case PT_V86: | |
b34976b6 | 272 | secname = ".virt86"; /* Virtual 8086 mode */ |
252b5132 RH |
273 | break; |
274 | case PT_SHFIL: | |
b34976b6 | 275 | secname = ".mmfile"; /* Memory mapped file */ |
252b5132 RH |
276 | break; |
277 | case PT_XDATA0: | |
b34976b6 | 278 | secname = ".Xdat0"; /* XENIX data region, virtual 0 */ |
252b5132 RH |
279 | break; |
280 | default: | |
281 | secname = ""; | |
282 | } | |
283 | flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; | |
284 | break; | |
285 | case CORES_PROC: /* struct proc */ | |
286 | case CORES_ITIMER: /* interval timers */ | |
287 | case CORES_SCOUTSNAME: /* struct scoutsname */ | |
288 | secname = NULL; /* Ignore these */ | |
289 | break; | |
b34976b6 AM |
290 | default: |
291 | (*_bfd_error_handler) ("Unhandled SCO core file section type %d\n", | |
292 | chead.cs_stype); | |
293 | continue; | |
294 | } | |
252b5132 RH |
295 | |
296 | if (secname | |
297 | && !make_bfd_asection (abfd, secname, flags, | |
298 | (bfd_size_type) chead.cs_vsize, | |
299 | (bfd_vma) chead.cs_vaddr, | |
300 | (file_ptr) chead.cs_sseek)) | |
9e7b37b3 | 301 | goto fail; |
252b5132 RH |
302 | |
303 | } | |
304 | ||
305 | return abfd->xvec; | |
306 | ||
9e7b37b3 AM |
307 | fail: |
308 | if (abfd->tdata.any) | |
309 | { | |
310 | bfd_release (abfd, abfd->tdata.any); | |
311 | abfd->tdata.any = NULL; | |
312 | } | |
313 | bfd_section_list_clear (abfd); | |
314 | return NULL; | |
252b5132 RH |
315 | } |
316 | ||
317 | char * | |
2c3fc389 | 318 | sco5_core_file_failing_command (bfd *abfd) |
252b5132 RH |
319 | { |
320 | char *com = abfd->tdata.sco5_core_data->u.u_comm; | |
321 | if (*com) | |
322 | return com; | |
323 | else | |
324 | return NULL; | |
325 | } | |
326 | ||
252b5132 | 327 | int |
2c3fc389 | 328 | sco5_core_file_failing_signal (bfd *ignore_abfd) |
252b5132 | 329 | { |
7b82c249 KH |
330 | return ((ignore_abfd->tdata.sco5_core_data->u.u_sysabort != 0) |
331 | ? ignore_abfd->tdata.sco5_core_data->u.u_sysabort | |
252b5132 RH |
332 | : -1); |
333 | } | |
334 | ||
252b5132 RH |
335 | /* If somebody calls any byte-swapping routines, shoot them. */ |
336 | static void | |
2c3fc389 | 337 | swap_abort (void) |
252b5132 | 338 | { |
7b82c249 | 339 | abort (); /* This way doesn't require any declaration for ANSI to fuck up */ |
252b5132 | 340 | } |
8ce8c090 | 341 | |
edeb6e24 AM |
342 | #define NO_GET ((bfd_vma (*) (const void *)) swap_abort) |
343 | #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) | |
344 | #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) | |
8ce8c090 AM |
345 | #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort) |
346 | #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort) | |
347 | #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort) | |
252b5132 RH |
348 | |
349 | const bfd_target sco5_core_vec = | |
350 | { | |
351 | "sco5-core", | |
352 | bfd_target_unknown_flavour, | |
b34976b6 AM |
353 | BFD_ENDIAN_LITTLE, /* target byte order */ |
354 | BFD_ENDIAN_LITTLE, /* target headers byte order */ | |
355 | (HAS_RELOC | EXEC_P | /* object flags */ | |
252b5132 RH |
356 | HAS_LINENO | HAS_DEBUG | |
357 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), | |
358 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ | |
d3aeb6ee AM |
359 | 0, /* symbol prefix */ |
360 | ' ', /* ar_pad_char */ | |
361 | 16, /* ar_max_namelen */ | |
362 | 0, /* match priority. */ | |
8ce8c090 | 363 | NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data */ |
edeb6e24 AM |
364 | NO_GET, NO_GETS, NO_PUT, /* 32 bit data */ |
365 | NO_GET, NO_GETS, NO_PUT, /* 16 bit data */ | |
8ce8c090 | 366 | NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs */ |
edeb6e24 AM |
367 | NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs */ |
368 | NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs */ | |
b34976b6 AM |
369 | |
370 | { /* bfd_check_format */ | |
8ce8c090 AM |
371 | _bfd_dummy_target, /* unknown format */ |
372 | _bfd_dummy_target, /* object file */ | |
373 | _bfd_dummy_target, /* archive */ | |
374 | sco5_core_file_p /* a core file */ | |
252b5132 | 375 | }, |
b34976b6 | 376 | { /* bfd_set_format */ |
8ce8c090 AM |
377 | bfd_false, bfd_false, |
378 | bfd_false, bfd_false | |
252b5132 | 379 | }, |
b34976b6 | 380 | { /* bfd_write_contents */ |
8ce8c090 AM |
381 | bfd_false, bfd_false, |
382 | bfd_false, bfd_false | |
252b5132 RH |
383 | }, |
384 | ||
3f3c5c34 AM |
385 | BFD_JUMP_TABLE_GENERIC (_bfd_generic), |
386 | BFD_JUMP_TABLE_COPY (_bfd_generic), | |
387 | BFD_JUMP_TABLE_CORE (sco5), | |
388 | BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), | |
389 | BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), | |
390 | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), | |
391 | BFD_JUMP_TABLE_WRITE (_bfd_generic), | |
392 | BFD_JUMP_TABLE_LINK (_bfd_nolink), | |
393 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), | |
252b5132 | 394 | |
c3c89269 | 395 | NULL, |
7b82c249 | 396 | |
2c3fc389 | 397 | NULL /* backend_data */ |
8ce8c090 | 398 | }; |