1 /* BFD back end for Lynx core files
2 Copyright 1993, 1994, 1995, 2001, 2002, 2004, 2006
3 Free Software Foundation, Inc.
4 Written by Stu Grossman of Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
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 2 of the License, or
11 (at your option) any later version.
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.
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, MA 02110-1301, USA. */
29 #include <sys/kernel.h>
30 /* sys/kernel.h should define this, but doesn't always, sigh. */
35 #include <sys/signal.h>
37 #include <sys/resource.h>
38 #include <sys/itimer.h>
42 /* These are stored in the bfd's tdata */
44 struct lynx_core_struct
50 #define core_hdr(bfd) ((bfd)->tdata.lynx_core_data)
51 #define core_signal(bfd) (core_hdr(bfd)->sig)
52 #define core_command(bfd) (core_hdr(bfd)->cmd)
54 #define lynx_core_file_matches_executable_p generic_core_file_matches_executable_p
56 /* Handle Lynx core dump file. */
59 make_bfd_asection (abfd, name, flags, size, vma, filepos)
70 newname = bfd_alloc (abfd, (bfd_size_type) strlen (name) + 1);
74 strcpy (newname, name);
76 asect = bfd_make_section_with_flags (abfd, newname, flags);
82 asect->filepos = filepos;
83 asect->alignment_power = 2;
89 lynx_core_file_p (abfd)
94 bfd_size_type tcontext_size;
100 pagesize = getpagesize (); /* Serious cross-target issue here... This
101 really needs to come from a system-specific
104 /* Get the pss entry from the core file */
106 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
110 if (bfd_bread ((void *) &pss, amt, abfd) != amt)
112 /* Too small to be a core file */
113 if (bfd_get_error () != bfd_error_system_call)
114 bfd_set_error (bfd_error_wrong_format);
118 amt = sizeof (struct lynx_core_struct);
119 core_hdr (abfd) = (struct lynx_core_struct *) bfd_zalloc (abfd, amt);
121 if (!core_hdr (abfd))
124 strncpy (core_command (abfd), pss.pname, PNMLEN + 1);
126 /* Compute the size of the thread contexts */
128 tcontext_size = pss.threadcnt * sizeof (core_st_t);
130 /* Allocate space for the thread contexts */
132 threadp = (core_st_t *) bfd_alloc (abfd, tcontext_size);
136 /* Save thread contexts */
138 if (bfd_seek (abfd, (file_ptr) pagesize, SEEK_SET) != 0)
141 if (bfd_bread ((void *) threadp, tcontext_size, abfd) != tcontext_size)
143 /* Probably too small to be a core file */
144 if (bfd_get_error () != bfd_error_system_call)
145 bfd_set_error (bfd_error_wrong_format);
149 core_signal (abfd) = threadp->currsig;
151 newsect = make_bfd_asection (abfd, ".stack",
152 SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
155 pagesize + tcontext_size);
159 newsect = make_bfd_asection (abfd, ".data",
160 SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
161 pss.data_len + pss.bss_len,
163 pagesize + tcontext_size + pss.ssize
164 #if defined (SPARC) || defined (__SPARC__)
165 /* SPARC Lynx seems to start dumping
166 the .data section at a page
167 boundary. It's OK to check a
168 #define like SPARC here because this
169 file can only be compiled on a Lynx
171 + pss.data_start % pagesize
177 /* And, now for the .reg/XXX pseudo sections. Each thread has it's own
178 .reg/XXX section, where XXX is the thread id (without leading zeros). The
179 currently running thread (at the time of the core dump) also has an alias
180 called `.reg' (just to keep GDB happy). Note that we use `.reg/XXX' as
181 opposed to `.regXXX' because GDB expects that .reg2 will be the floating-
184 newsect = make_bfd_asection (abfd, ".reg",
192 for (secnum = 0; secnum < pss.threadcnt; secnum++)
196 sprintf (secname, ".reg/%d", BUILDPID (0, threadp[secnum].tid));
197 newsect = make_bfd_asection (abfd, secname,
201 pagesize + secnum * sizeof (core_st_t));
209 bfd_release (abfd, core_hdr (abfd));
210 core_hdr (abfd) = NULL;
211 bfd_section_list_clear (abfd);
216 lynx_core_file_failing_command (abfd)
219 return core_command (abfd);
223 lynx_core_file_failing_signal (abfd)
226 return core_signal (abfd);
229 #endif /* LYNX_CORE */