]>
Commit | Line | Data |
---|---|---|
9712c6e2 SG |
1 | /* BFD back end for traditional Unix core files (U-area and raw sections) |
2 | Copyright (C) 1988, 1989, 1991 Free Software Foundation, Inc. | |
3 | Written by John Gilmore of Cygnus Support. | |
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., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
ff37ea55 | 20 | |
6a469027 JG |
21 | /* To use this file on a particular host, configure the host with these |
22 | parameters in the config/h-HOST file: | |
23 | ||
637942e4 | 24 | HDEFINES=-DTRAD_CORE |
6a469027 JG |
25 | HDEPFILES=trad-core.o |
26 | ||
27 | */ | |
28 | ||
ff37ea55 | 29 | #include "bfd.h" |
637942e4 | 30 | #include "sysdep.h" |
ff37ea55 | 31 | #include "libbfd.h" |
359f1dee | 32 | #include "libaout.h" /* BFD a.out internal data structures */ |
ff37ea55 | 33 | |
637942e4 | 34 | #include <stdio.h> |
ff37ea55 JG |
35 | #include <sys/types.h> |
36 | #include <sys/param.h> | |
37 | #include <sys/dir.h> | |
38 | #include <signal.h> | |
39 | #include <machine/reg.h> | |
40 | ||
41 | #include <sys/user.h> /* After a.out.h */ | |
42 | #include <sys/file.h> | |
ff37ea55 JG |
43 | |
44 | #include <errno.h> | |
45 | ||
ff37ea55 JG |
46 | /* These are stored in the bfd's tdata */ |
47 | struct core_data { | |
48 | struct user *upage; /* core file header */ | |
49 | asection *data_section; | |
50 | asection *stack_section; | |
51 | asection *reg_section; | |
52 | }; | |
53 | ||
6a469027 JG |
54 | #define core_hdr(bfd) (((struct core_data *) (bfd->tdata))->hdr) |
55 | #define core_upage(bfd) (((struct core_data *) ((bfd)->tdata))->upage) | |
56 | #define core_datasec(bfd) (((struct core_data *) ((bfd)->tdata))->data_section) | |
57 | #define core_stacksec(bfd) (((struct core_data*)((bfd)->tdata))->stack_section) | |
58 | #define core_regsec(bfd) (((struct core_data *) ((bfd)->tdata))->reg_section) | |
59 | ||
637942e4 JG |
60 | /* Handle 4.2-style (and perhaps also sysV-style) core dump file. */ |
61 | ||
7ed4093a | 62 | /* ARGSUSED */ |
ff37ea55 JG |
63 | bfd_target * |
64 | trad_unix_core_file_p (abfd) | |
65 | bfd *abfd; | |
66 | { | |
ff37ea55 | 67 | int val; |
ff37ea55 JG |
68 | struct user u; |
69 | unsigned int reg_offset, fp_reg_offset; | |
637942e4 JG |
70 | /* This struct is just for allocating two things with one zalloc, so |
71 | they will be freed together, without violating alignment constraints. */ | |
72 | struct core_user { | |
73 | struct core_data coredata; | |
74 | struct user u; | |
75 | } *rawptr; | |
ff37ea55 JG |
76 | |
77 | val = bfd_read ((void *)&u, 1, sizeof u, abfd); | |
78 | if (val != sizeof u) | |
79 | return 0; /* Too small to be a core file */ | |
80 | ||
81 | /* Sanity check perhaps??? */ | |
82 | if (u.u_dsize > 0x1000000) /* Remember, it's in pages... */ | |
83 | return 0; | |
84 | if (u.u_ssize > 0x1000000) | |
85 | return 0; | |
86 | /* Check that the size claimed is no greater than the file size. FIXME. */ | |
87 | ||
88 | /* OK, we believe you. You're a core file (sure, sure). */ | |
89 | ||
90 | /* Allocate both the upage and the struct core_data at once, so | |
91 | a single free() will free them both. */ | |
637942e4 | 92 | rawptr = (struct core_user *)bfd_zalloc (abfd, sizeof (struct core_user)); |
ff37ea55 JG |
93 | if (rawptr == NULL) { |
94 | bfd_error = no_memory; | |
95 | return 0; | |
96 | } | |
97 | ||
637942e4 JG |
98 | set_tdata (abfd, &rawptr->coredata); |
99 | core_upage (abfd) = &rawptr->u; | |
ff37ea55 JG |
100 | *core_upage (abfd) = u; /* Save that upage! */ |
101 | ||
637942e4 JG |
102 | /* Create the sections. This is raunchy, but bfd_close wants to free |
103 | them separately. */ | |
ff37ea55 JG |
104 | core_stacksec (abfd) = (asection *) zalloc (sizeof (asection)); |
105 | if (core_stacksec (abfd) == NULL) { | |
106 | loser: | |
107 | bfd_error = no_memory; | |
108 | free ((void *)rawptr); | |
109 | return 0; | |
110 | } | |
111 | core_datasec (abfd) = (asection *) zalloc (sizeof (asection)); | |
112 | if (core_datasec (abfd) == NULL) { | |
113 | loser1: | |
114 | free ((void *)core_stacksec (abfd)); | |
115 | goto loser; | |
116 | } | |
117 | core_regsec (abfd) = (asection *) zalloc (sizeof (asection)); | |
118 | if (core_regsec (abfd) == NULL) { | |
119 | loser2: | |
120 | free ((void *)core_datasec (abfd)); | |
121 | goto loser1; | |
122 | } | |
123 | ||
124 | core_stacksec (abfd)->name = ".stack"; | |
125 | core_datasec (abfd)->name = ".data"; | |
126 | core_regsec (abfd)->name = ".reg"; | |
127 | ||
6a469027 JG |
128 | core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; |
129 | core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; | |
130 | core_regsec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS; | |
ff37ea55 JG |
131 | |
132 | core_datasec (abfd)->size = NBPG * u.u_dsize; | |
133 | core_stacksec (abfd)->size = NBPG * u.u_ssize; | |
134 | core_regsec (abfd)->size = NBPG * UPAGES; /* Larger than sizeof struct u */ | |
135 | ||
136 | /* What a hack... we'd like to steal it from the exec file, | |
137 | since the upage does not seem to provide it. FIXME. */ | |
9712c6e2 SG |
138 | #ifdef HOST_DATA_START_ADDR |
139 | core_datasec (abfd)->vma = HOST_DATA_START_ADDR; | |
140 | #else | |
141 | core_datasec (abfd)->vma = HOST_TEXT_START_ADDR + (NBPG * u.u_tsize); | |
142 | #endif | |
143 | core_stacksec (abfd)->vma = HOST_STACK_END_ADDR - (NBPG * u.u_ssize); | |
637942e4 JG |
144 | /* This is tricky. As the "register section", we give them the entire |
145 | upage and stack. u.u_ar0 points to where "register 0" is stored. | |
146 | There are two tricks with this, though. One is that the rest of the | |
147 | registers might be at positive or negative (or both) displacements | |
148 | from *u_ar0. The other is that u_ar0 is sometimes an absolute address | |
149 | in kernel memory, and on other systems it is an offset from the beginning | |
150 | of the `struct user'. | |
151 | ||
152 | As a practical matter, we don't know where the registers actually are, | |
153 | so we have to pass the whole area to GDB. We encode the value of u_ar0 | |
154 | by setting the .regs section up so that its virtual memory address | |
155 | 0 is at the place pointed to by u_ar0 (by setting the vma of the start | |
156 | of the section to -u_ar0). GDB uses this info to locate the regs, | |
157 | using minor trickery to get around the offset-or-absolute-addr problem. */ | |
158 | core_regsec (abfd)->vma = 0 - (int) u.u_ar0; | |
ff37ea55 JG |
159 | |
160 | core_datasec (abfd)->filepos = NBPG * UPAGES; | |
161 | core_stacksec (abfd)->filepos = (NBPG * UPAGES) + NBPG * u.u_dsize; | |
162 | core_regsec (abfd)->filepos = 0; /* Register segment is the upage */ | |
163 | ||
164 | /* Align to word at least */ | |
165 | core_stacksec (abfd)->alignment_power = 2; | |
166 | core_datasec (abfd)->alignment_power = 2; | |
167 | core_regsec (abfd)->alignment_power = 2; | |
168 | ||
169 | abfd->sections = core_stacksec (abfd); | |
170 | core_stacksec (abfd)->next = core_datasec (abfd); | |
171 | core_datasec (abfd)->next = core_regsec (abfd); | |
172 | abfd->section_count = 3; | |
173 | ||
174 | return abfd->xvec; | |
ff37ea55 JG |
175 | } |
176 | ||
177 | char * | |
178 | trad_unix_core_file_failing_command (abfd) | |
179 | bfd *abfd; | |
180 | { | |
181 | if (*core_upage (abfd)->u_comm) | |
182 | return core_upage (abfd)->u_comm; | |
183 | else | |
184 | return 0; | |
185 | } | |
186 | ||
7ed4093a | 187 | /* ARGSUSED */ |
ff37ea55 | 188 | int |
7ed4093a SC |
189 | trad_unix_core_file_failing_signal (ignore_abfd) |
190 | bfd *ignore_abfd; | |
ff37ea55 JG |
191 | { |
192 | return -1; /* FIXME, where is it? */ | |
193 | } | |
194 | ||
7ed4093a | 195 | /* ARGSUSED */ |
ff37ea55 JG |
196 | boolean |
197 | trad_unix_core_file_matches_executable_p (core_bfd, exec_bfd) | |
198 | bfd *core_bfd, *exec_bfd; | |
199 | { | |
200 | return true; /* FIXME, We have no way of telling at this point */ | |
201 | } | |
6a469027 JG |
202 | \f |
203 | /* No archive file support via this BFD */ | |
204 | #define trad_unix_openr_next_archived_file bfd_generic_openr_next_archived_file | |
205 | #define trad_unix_generic_stat_arch_elt bfd_generic_stat_arch_elt | |
206 | #define trad_unix_slurp_armap bfd_false | |
207 | #define trad_unix_slurp_extended_name_table bfd_true | |
208 | #define trad_unix_write_armap (PROTO (boolean, (*), \ | |
209 | (bfd *arch, unsigned int elength, struct orl *map, int orl_count, \ | |
210 | int stridx))) bfd_false | |
211 | #define trad_unix_truncate_arname bfd_dont_truncate_arname | |
212 | #define aout_32_openr_next_archived_file bfd_generic_openr_next_archived_file | |
213 | ||
214 | #define trad_unix_close_and_cleanup bfd_generic_close_and_cleanup | |
215 | #define trad_unix_set_section_contents (PROTO(boolean, (*), \ | |
216 | (bfd *abfd, asection *section, PTR data, file_ptr offset, \ | |
217 | bfd_size_type count))) bfd_false | |
218 | #define trad_unix_get_section_contents bfd_generic_get_section_contents | |
219 | #define trad_unix_new_section_hook (PROTO (boolean, (*), \ | |
220 | (bfd *, sec_ptr))) bfd_true | |
221 | #define trad_unix_get_symtab_upper_bound bfd_0u | |
222 | #define trad_unix_get_symtab (PROTO (unsigned int, (*), \ | |
223 | (bfd *, struct symbol_cache_entry **))) bfd_0u | |
224 | #define trad_unix_get_reloc_upper_bound (PROTO (unsigned int, (*), \ | |
225 | (bfd *, sec_ptr))) bfd_0u | |
226 | #define trad_unix_canonicalize_reloc (PROTO (unsigned int, (*), \ | |
227 | (bfd *, sec_ptr, arelent **, struct symbol_cache_entry**))) bfd_0u | |
228 | #define trad_unix_make_empty_symbol (PROTO ( \ | |
229 | struct symbol_cache_entry *, (*), (bfd *))) bfd_false | |
230 | #define trad_unix_print_symbol (PROTO (void, (*), \ | |
231 | (bfd *, PTR, struct symbol_cache_entry *, \ | |
232 | bfd_print_symbol_type))) bfd_false | |
233 | #define trad_unix_get_lineno (PROTO (alent *, (*), \ | |
234 | (bfd *, struct symbol_cache_entry *))) bfd_nullvoidptr | |
235 | #define trad_unix_set_arch_mach (PROTO (boolean, (*), \ | |
236 | (bfd *, enum bfd_architecture, unsigned long))) bfd_false | |
237 | #define trad_unix_find_nearest_line (PROTO (boolean, (*), \ | |
238 | (bfd *abfd, struct sec *section, \ | |
239 | struct symbol_cache_entry **symbols,bfd_vma offset, \ | |
240 | CONST char **file, CONST char **func, unsigned int *line))) bfd_false | |
241 | #define trad_unix_sizeof_headers (PROTO (int, (*), \ | |
242 | (bfd *, boolean))) bfd_0 | |
243 | ||
244 | #define trad_unix_bfd_debug_info_start bfd_void | |
245 | #define trad_unix_bfd_debug_info_end bfd_void | |
246 | #define trad_unix_bfd_debug_info_accumulate (PROTO (void, (*), \ | |
247 | (bfd *, struct sec *))) bfd_void | |
248 | ||
637942e4 JG |
249 | /* If somebody calls any byte-swapping routines, shoot them. */ |
250 | void | |
251 | swap_abort() | |
252 | { | |
253 | abort(); /* This way doesn't require any declaration for ANSI to fuck up */ | |
254 | } | |
255 | #define NO_GET ((PROTO(bfd_vma, (*), ( bfd_byte *))) swap_abort ) | |
256 | #define NO_PUT ((PROTO(void, (*), (bfd_vma, bfd_byte *))) swap_abort ) | |
6a469027 | 257 | |
637942e4 | 258 | bfd_target trad_core_vec = |
6a469027 | 259 | { |
637942e4 | 260 | "trad-core", |
6a469027 JG |
261 | bfd_target_unknown_flavour, |
262 | true, /* target byte order */ | |
263 | true, /* target headers byte order */ | |
264 | (HAS_RELOC | EXEC_P | /* object flags */ | |
265 | HAS_LINENO | HAS_DEBUG | | |
266 | HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), | |
267 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ | |
268 | ' ', /* ar_pad_char */ | |
269 | 16, /* ar_max_namelen */ | |
270 | 3, /* minimum alignment power */ | |
637942e4 JG |
271 | NO_GET, NO_PUT, NO_GET, NO_PUT, NO_GET, NO_PUT, /* data */ |
272 | NO_GET, NO_PUT, NO_GET, NO_PUT, NO_GET, NO_PUT, /* hdrs */ | |
273 | ||
274 | {_bfd_dummy_target, _bfd_dummy_target, | |
275 | _bfd_dummy_target, trad_unix_core_file_p}, | |
276 | {bfd_false, bfd_false, /* bfd_create_object */ | |
277 | bfd_false, bfd_false}, | |
278 | {bfd_false, bfd_false, /* bfd_write_contents */ | |
279 | bfd_false, bfd_false}, | |
6a469027 JG |
280 | |
281 | JUMP_TABLE(trad_unix) | |
282 | }; |