1*3d8817e4Smiod /* BFD back end for NetBSD style core files
2*3d8817e4Smiod Copyright 1988, 1989, 1991, 1992, 1993, 1996, 1998, 1999, 2000, 2001,
3*3d8817e4Smiod 2002, 2003, 2004, 2005
4*3d8817e4Smiod Free Software Foundation, Inc.
5*3d8817e4Smiod Written by Paul Kranenburg, EUR
6*3d8817e4Smiod
7*3d8817e4Smiod This file is part of BFD, the Binary File Descriptor library.
8*3d8817e4Smiod
9*3d8817e4Smiod This program is free software; you can redistribute it and/or modify
10*3d8817e4Smiod it under the terms of the GNU General Public License as published by
11*3d8817e4Smiod the Free Software Foundation; either version 2 of the License, or
12*3d8817e4Smiod (at your option) any later version.
13*3d8817e4Smiod
14*3d8817e4Smiod This program is distributed in the hope that it will be useful,
15*3d8817e4Smiod but WITHOUT ANY WARRANTY; without even the implied warranty of
16*3d8817e4Smiod MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17*3d8817e4Smiod GNU General Public License for more details.
18*3d8817e4Smiod
19*3d8817e4Smiod You should have received a copy of the GNU General Public License
20*3d8817e4Smiod along with this program; if not, write to the Free Software
21*3d8817e4Smiod Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
22*3d8817e4Smiod
23*3d8817e4Smiod #include "bfd.h"
24*3d8817e4Smiod #include "sysdep.h"
25*3d8817e4Smiod #include "libbfd.h"
26*3d8817e4Smiod #include "libaout.h" /* BFD a.out internal data structures. */
27*3d8817e4Smiod
28*3d8817e4Smiod #include <sys/param.h>
29*3d8817e4Smiod #include <sys/dir.h>
30*3d8817e4Smiod #include <signal.h>
31*3d8817e4Smiod #include <sys/core.h>
32*3d8817e4Smiod
33*3d8817e4Smiod /* The machine ID for OpenBSD/sparc64 and older versions of
34*3d8817e4Smiod NetBSD/sparc64 overlaps with M_MIPS1. */
35*3d8817e4Smiod #define M_SPARC64_OPENBSD M_MIPS1
36*3d8817e4Smiod
37*3d8817e4Smiod /* Offset of StackGhost cookie within `struct md_coredump' on
38*3d8817e4Smiod OpenBSD/sparc. */
39*3d8817e4Smiod #define SPARC_WCOOKIE_OFFSET 344
40*3d8817e4Smiod
41*3d8817e4Smiod /* Offset of StackGhost cookie within `struct md_coredump' on
42*3d8817e4Smiod OpenBSD/sparc64. */
43*3d8817e4Smiod #define SPARC64_WCOOKIE_OFFSET 832
44*3d8817e4Smiod
45*3d8817e4Smiod #define netbsd_core_file_matches_executable_p generic_core_file_matches_executable_p
46*3d8817e4Smiod
47*3d8817e4Smiod struct netbsd_core_struct
48*3d8817e4Smiod {
49*3d8817e4Smiod struct core core;
50*3d8817e4Smiod } *rawptr;
51*3d8817e4Smiod
52*3d8817e4Smiod /* Handle NetBSD-style core dump file. */
53*3d8817e4Smiod
54*3d8817e4Smiod static const bfd_target *
netbsd_core_file_p(bfd * abfd)55*3d8817e4Smiod netbsd_core_file_p (bfd *abfd)
56*3d8817e4Smiod {
57*3d8817e4Smiod int val;
58*3d8817e4Smiod unsigned i;
59*3d8817e4Smiod file_ptr offset;
60*3d8817e4Smiod asection *asect;
61*3d8817e4Smiod struct core core;
62*3d8817e4Smiod struct coreseg coreseg;
63*3d8817e4Smiod bfd_size_type amt = sizeof core;
64*3d8817e4Smiod
65*3d8817e4Smiod val = bfd_bread (&core, amt, abfd);
66*3d8817e4Smiod if (val != sizeof core)
67*3d8817e4Smiod {
68*3d8817e4Smiod /* Too small to be a core file. */
69*3d8817e4Smiod bfd_set_error (bfd_error_wrong_format);
70*3d8817e4Smiod return 0;
71*3d8817e4Smiod }
72*3d8817e4Smiod
73*3d8817e4Smiod if (CORE_GETMAGIC (core) != COREMAGIC)
74*3d8817e4Smiod {
75*3d8817e4Smiod bfd_set_error (bfd_error_wrong_format);
76*3d8817e4Smiod return 0;
77*3d8817e4Smiod }
78*3d8817e4Smiod
79*3d8817e4Smiod amt = sizeof (struct netbsd_core_struct);
80*3d8817e4Smiod rawptr = (struct netbsd_core_struct *) bfd_zalloc (abfd, amt);
81*3d8817e4Smiod if (rawptr == NULL)
82*3d8817e4Smiod return 0;
83*3d8817e4Smiod
84*3d8817e4Smiod rawptr->core = core;
85*3d8817e4Smiod abfd->tdata.netbsd_core_data = rawptr;
86*3d8817e4Smiod
87*3d8817e4Smiod offset = core.c_hdrsize;
88*3d8817e4Smiod for (i = 0; i < core.c_nseg; i++)
89*3d8817e4Smiod {
90*3d8817e4Smiod const char *sname;
91*3d8817e4Smiod flagword flags;
92*3d8817e4Smiod
93*3d8817e4Smiod if (bfd_seek (abfd, offset, SEEK_SET) != 0)
94*3d8817e4Smiod goto punt;
95*3d8817e4Smiod
96*3d8817e4Smiod val = bfd_bread (&coreseg, sizeof coreseg, abfd);
97*3d8817e4Smiod if (val != sizeof coreseg)
98*3d8817e4Smiod {
99*3d8817e4Smiod bfd_set_error (bfd_error_file_truncated);
100*3d8817e4Smiod goto punt;
101*3d8817e4Smiod }
102*3d8817e4Smiod if (CORE_GETMAGIC (coreseg) != CORESEGMAGIC)
103*3d8817e4Smiod {
104*3d8817e4Smiod bfd_set_error (bfd_error_wrong_format);
105*3d8817e4Smiod goto punt;
106*3d8817e4Smiod }
107*3d8817e4Smiod
108*3d8817e4Smiod offset += core.c_seghdrsize;
109*3d8817e4Smiod
110*3d8817e4Smiod switch (CORE_GETFLAG (coreseg))
111*3d8817e4Smiod {
112*3d8817e4Smiod case CORE_CPU:
113*3d8817e4Smiod sname = ".reg";
114*3d8817e4Smiod flags = SEC_ALLOC + SEC_HAS_CONTENTS;
115*3d8817e4Smiod break;
116*3d8817e4Smiod case CORE_DATA:
117*3d8817e4Smiod sname = ".data";
118*3d8817e4Smiod flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
119*3d8817e4Smiod break;
120*3d8817e4Smiod case CORE_STACK:
121*3d8817e4Smiod sname = ".stack";
122*3d8817e4Smiod flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
123*3d8817e4Smiod break;
124*3d8817e4Smiod default:
125*3d8817e4Smiod sname = ".unknown";
126*3d8817e4Smiod flags = SEC_ALLOC + SEC_HAS_CONTENTS;
127*3d8817e4Smiod break;
128*3d8817e4Smiod }
129*3d8817e4Smiod asect = bfd_make_section_anyway (abfd, sname);
130*3d8817e4Smiod if (asect == NULL)
131*3d8817e4Smiod goto punt;
132*3d8817e4Smiod
133*3d8817e4Smiod asect->flags = flags;
134*3d8817e4Smiod asect->size = coreseg.c_size;
135*3d8817e4Smiod asect->vma = coreseg.c_addr;
136*3d8817e4Smiod asect->filepos = offset;
137*3d8817e4Smiod asect->alignment_power = 2;
138*3d8817e4Smiod
139*3d8817e4Smiod if (CORE_GETFLAG (coreseg) == CORE_CPU)
140*3d8817e4Smiod {
141*3d8817e4Smiod bfd_size_type wcookie_offset;
142*3d8817e4Smiod
143*3d8817e4Smiod switch (CORE_GETMID (core))
144*3d8817e4Smiod {
145*3d8817e4Smiod case M_SPARC_NETBSD:
146*3d8817e4Smiod wcookie_offset = SPARC_WCOOKIE_OFFSET;
147*3d8817e4Smiod break;
148*3d8817e4Smiod case M_SPARC64_OPENBSD:
149*3d8817e4Smiod wcookie_offset = SPARC64_WCOOKIE_OFFSET;
150*3d8817e4Smiod break;
151*3d8817e4Smiod default:
152*3d8817e4Smiod wcookie_offset = 0;
153*3d8817e4Smiod break;
154*3d8817e4Smiod }
155*3d8817e4Smiod
156*3d8817e4Smiod if (wcookie_offset > 0 && coreseg.c_size > wcookie_offset)
157*3d8817e4Smiod {
158*3d8817e4Smiod /* Truncate the .reg section. */
159*3d8817e4Smiod asect->size = wcookie_offset;
160*3d8817e4Smiod
161*3d8817e4Smiod /* And create the .wcookie section. */
162*3d8817e4Smiod asect = bfd_make_section_anyway (abfd, ".wcookie");
163*3d8817e4Smiod if (asect == NULL)
164*3d8817e4Smiod goto punt;
165*3d8817e4Smiod
166*3d8817e4Smiod asect->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
167*3d8817e4Smiod asect->size = coreseg.c_size - wcookie_offset;
168*3d8817e4Smiod asect->vma = 0;
169*3d8817e4Smiod asect->filepos = offset + wcookie_offset;
170*3d8817e4Smiod asect->alignment_power = 2;
171*3d8817e4Smiod }
172*3d8817e4Smiod }
173*3d8817e4Smiod
174*3d8817e4Smiod offset += coreseg.c_size;
175*3d8817e4Smiod }
176*3d8817e4Smiod
177*3d8817e4Smiod /* Set architecture from machine ID. */
178*3d8817e4Smiod switch (CORE_GETMID (core))
179*3d8817e4Smiod {
180*3d8817e4Smiod case M_ALPHA_NETBSD:
181*3d8817e4Smiod bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0);
182*3d8817e4Smiod break;
183*3d8817e4Smiod
184*3d8817e4Smiod case M_ARM6_NETBSD:
185*3d8817e4Smiod bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_3);
186*3d8817e4Smiod break;
187*3d8817e4Smiod
188*3d8817e4Smiod case M_X86_64_NETBSD:
189*3d8817e4Smiod bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
190*3d8817e4Smiod break;
191*3d8817e4Smiod
192*3d8817e4Smiod case M_386_NETBSD:
193*3d8817e4Smiod bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386);
194*3d8817e4Smiod break;
195*3d8817e4Smiod
196*3d8817e4Smiod case M_68K_NETBSD:
197*3d8817e4Smiod case M_68K4K_NETBSD:
198*3d8817e4Smiod bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0);
199*3d8817e4Smiod break;
200*3d8817e4Smiod
201*3d8817e4Smiod case M_88K_OPENBSD:
202*3d8817e4Smiod bfd_default_set_arch_mach (abfd, bfd_arch_m88k, 0);
203*3d8817e4Smiod break;
204*3d8817e4Smiod
205*3d8817e4Smiod case M_HPPA_OPENBSD:
206*3d8817e4Smiod bfd_default_set_arch_mach (abfd, bfd_arch_hppa, bfd_mach_hppa11);
207*3d8817e4Smiod break;
208*3d8817e4Smiod
209*3d8817e4Smiod case M_POWERPC_NETBSD:
210*3d8817e4Smiod bfd_default_set_arch_mach (abfd, bfd_arch_powerpc, bfd_mach_ppc);
211*3d8817e4Smiod break;
212*3d8817e4Smiod
213*3d8817e4Smiod case M_SPARC_NETBSD:
214*3d8817e4Smiod bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
215*3d8817e4Smiod break;
216*3d8817e4Smiod
217*3d8817e4Smiod case M_SPARC64_NETBSD:
218*3d8817e4Smiod case M_SPARC64_OPENBSD:
219*3d8817e4Smiod bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc_v9);
220*3d8817e4Smiod break;
221*3d8817e4Smiod
222*3d8817e4Smiod case M_VAX_NETBSD:
223*3d8817e4Smiod case M_VAX4K_NETBSD:
224*3d8817e4Smiod bfd_default_set_arch_mach (abfd, bfd_arch_vax, 0);
225*3d8817e4Smiod break;
226*3d8817e4Smiod }
227*3d8817e4Smiod
228*3d8817e4Smiod /* OK, we believe you. You're a core file (sure, sure). */
229*3d8817e4Smiod return abfd->xvec;
230*3d8817e4Smiod
231*3d8817e4Smiod punt:
232*3d8817e4Smiod bfd_release (abfd, abfd->tdata.any);
233*3d8817e4Smiod abfd->tdata.any = NULL;
234*3d8817e4Smiod bfd_section_list_clear (abfd);
235*3d8817e4Smiod return 0;
236*3d8817e4Smiod }
237*3d8817e4Smiod
238*3d8817e4Smiod static char*
netbsd_core_file_failing_command(bfd * abfd)239*3d8817e4Smiod netbsd_core_file_failing_command (bfd *abfd)
240*3d8817e4Smiod {
241*3d8817e4Smiod /*return core_command (abfd);*/
242*3d8817e4Smiod return abfd->tdata.netbsd_core_data->core.c_name;
243*3d8817e4Smiod }
244*3d8817e4Smiod
245*3d8817e4Smiod static int
netbsd_core_file_failing_signal(bfd * abfd)246*3d8817e4Smiod netbsd_core_file_failing_signal (bfd *abfd)
247*3d8817e4Smiod {
248*3d8817e4Smiod /*return core_signal (abfd);*/
249*3d8817e4Smiod return abfd->tdata.netbsd_core_data->core.c_signo;
250*3d8817e4Smiod }
251*3d8817e4Smiod
252*3d8817e4Smiod /* If somebody calls any byte-swapping routines, shoot them. */
253*3d8817e4Smiod
254*3d8817e4Smiod static void
swap_abort(void)255*3d8817e4Smiod swap_abort (void)
256*3d8817e4Smiod {
257*3d8817e4Smiod /* This way doesn't require any declaration for ANSI to fuck up. */
258*3d8817e4Smiod abort ();
259*3d8817e4Smiod }
260*3d8817e4Smiod
261*3d8817e4Smiod #define NO_GET ((bfd_vma (*) (const void *)) swap_abort)
262*3d8817e4Smiod #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort)
263*3d8817e4Smiod #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort)
264*3d8817e4Smiod #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort)
265*3d8817e4Smiod #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort)
266*3d8817e4Smiod #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort)
267*3d8817e4Smiod
268*3d8817e4Smiod const bfd_target netbsd_core_vec =
269*3d8817e4Smiod {
270*3d8817e4Smiod "netbsd-core",
271*3d8817e4Smiod bfd_target_unknown_flavour,
272*3d8817e4Smiod BFD_ENDIAN_UNKNOWN, /* Target byte order. */
273*3d8817e4Smiod BFD_ENDIAN_UNKNOWN, /* Target headers byte order. */
274*3d8817e4Smiod (HAS_RELOC | EXEC_P | /* Object flags. */
275*3d8817e4Smiod HAS_LINENO | HAS_DEBUG |
276*3d8817e4Smiod HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
277*3d8817e4Smiod (SEC_HAS_CONTENTS | /* Section flags. */
278*3d8817e4Smiod SEC_ALLOC | SEC_LOAD | SEC_RELOC),
279*3d8817e4Smiod 0, /* Symbol prefix. */
280*3d8817e4Smiod ' ', /* ar_pad_char. */
281*3d8817e4Smiod 16, /* ar_max_namelen. */
282*3d8817e4Smiod NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data. */
283*3d8817e4Smiod NO_GET, NO_GETS, NO_PUT, /* 32 bit data. */
284*3d8817e4Smiod NO_GET, NO_GETS, NO_PUT, /* 16 bit data. */
285*3d8817e4Smiod NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs. */
286*3d8817e4Smiod NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs. */
287*3d8817e4Smiod NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs. */
288*3d8817e4Smiod
289*3d8817e4Smiod { /* bfd_check_format. */
290*3d8817e4Smiod _bfd_dummy_target, /* Unknown format. */
291*3d8817e4Smiod _bfd_dummy_target, /* Object file. */
292*3d8817e4Smiod _bfd_dummy_target, /* Archive. */
293*3d8817e4Smiod netbsd_core_file_p /* A core file. */
294*3d8817e4Smiod },
295*3d8817e4Smiod { /* bfd_set_format. */
296*3d8817e4Smiod bfd_false, bfd_false,
297*3d8817e4Smiod bfd_false, bfd_false
298*3d8817e4Smiod },
299*3d8817e4Smiod { /* bfd_write_contents. */
300*3d8817e4Smiod bfd_false, bfd_false,
301*3d8817e4Smiod bfd_false, bfd_false
302*3d8817e4Smiod },
303*3d8817e4Smiod
304*3d8817e4Smiod BFD_JUMP_TABLE_GENERIC (_bfd_generic),
305*3d8817e4Smiod BFD_JUMP_TABLE_COPY (_bfd_generic),
306*3d8817e4Smiod BFD_JUMP_TABLE_CORE (netbsd),
307*3d8817e4Smiod BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
308*3d8817e4Smiod BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
309*3d8817e4Smiod BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
310*3d8817e4Smiod BFD_JUMP_TABLE_WRITE (_bfd_generic),
311*3d8817e4Smiod BFD_JUMP_TABLE_LINK (_bfd_nolink),
312*3d8817e4Smiod BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
313*3d8817e4Smiod
314*3d8817e4Smiod NULL,
315*3d8817e4Smiod
316*3d8817e4Smiod (PTR) 0 /* Backend_data. */
317*3d8817e4Smiod };
318