1 /* BFD back end for Lynx core files
2 Copyright 1993, 1994, 1995, 2001, 2002 Free Software Foundation, Inc.
3 Written by Stu Grossman of Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
28 #include <sys/kernel.h>
29 /* sys/kernel.h should define this, but doesn't always, sigh. */
34 #include <sys/signal.h>
36 #include <sys/resource.h>
37 #include <sys/itimer.h>
41 /* These are stored in the bfd's tdata */
43 struct lynx_core_struct
49 #define core_hdr(bfd) ((bfd)->tdata.lynx_core_data)
50 #define core_signal(bfd) (core_hdr(bfd)->sig)
51 #define core_command(bfd) (core_hdr(bfd)->cmd)
53 /* Handle Lynx core dump file. */
56 make_bfd_asection (abfd, name, flags, _raw_size, vma, filepos)
60 bfd_size_type _raw_size;
67 newname = bfd_alloc (abfd, (bfd_size_type) strlen (name) + 1);
71 strcpy (newname, name);
73 asect = bfd_make_section (abfd, newname);
78 asect->_raw_size = _raw_size;
80 asect->filepos = filepos;
81 asect->alignment_power = 2;
87 lynx_core_file_p (abfd)
92 bfd_size_type tcontext_size;
98 pagesize = getpagesize (); /* Serious cross-target issue here... This
99 really needs to come from a system-specific
102 /* Get the pss entry from the core file */
104 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
108 if (bfd_bread ((void *) &pss, amt, abfd) != amt)
110 /* Too small to be a core file */
111 if (bfd_get_error () != bfd_error_system_call)
112 bfd_set_error (bfd_error_wrong_format);
116 amt = sizeof (struct lynx_core_struct);
117 core_hdr (abfd) = (struct lynx_core_struct *) bfd_zalloc (abfd, amt);
119 if (!core_hdr (abfd))
122 strncpy (core_command (abfd), pss.pname, PNMLEN + 1);
124 /* Compute the size of the thread contexts */
126 tcontext_size = pss.threadcnt * sizeof (core_st_t);
128 /* Allocate space for the thread contexts */
130 threadp = (core_st_t *) bfd_alloc (abfd, tcontext_size);
134 /* Save thread contexts */
136 if (bfd_seek (abfd, (file_ptr) pagesize, SEEK_SET) != 0)
139 if (bfd_bread ((void *) threadp, tcontext_size, abfd) != tcontext_size)
141 /* Probably too small to be a core file */
142 if (bfd_get_error () != bfd_error_system_call)
143 bfd_set_error (bfd_error_wrong_format);
147 core_signal (abfd) = threadp->currsig;
149 newsect = make_bfd_asection (abfd, ".stack",
150 SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
153 pagesize + tcontext_size);
157 newsect = make_bfd_asection (abfd, ".data",
158 SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
159 pss.data_len + pss.bss_len,
161 pagesize + tcontext_size + pss.ssize
162 #if defined (SPARC) || defined (__SPARC__)
163 /* SPARC Lynx seems to start dumping
164 the .data section at a page
165 boundary. It's OK to check a
166 #define like SPARC here because this
167 file can only be compiled on a Lynx
169 + pss.data_start % pagesize
175 /* And, now for the .reg/XXX pseudo sections. Each thread has it's own
176 .reg/XXX section, where XXX is the thread id (without leading zeros). The
177 currently running thread (at the time of the core dump) also has an alias
178 called `.reg' (just to keep GDB happy). Note that we use `.reg/XXX' as
179 opposed to `.regXXX' because GDB expects that .reg2 will be the floating-
182 newsect = make_bfd_asection (abfd, ".reg",
190 for (secnum = 0; secnum < pss.threadcnt; secnum++)
194 sprintf (secname, ".reg/%d", BUILDPID (0, threadp[secnum].tid));
195 newsect = make_bfd_asection (abfd, secname,
199 pagesize + secnum * sizeof (core_st_t));
207 bfd_release (abfd, core_hdr (abfd));
208 core_hdr (abfd) = NULL;
209 bfd_section_list_clear (abfd);
214 lynx_core_file_failing_command (abfd)
217 return core_command (abfd);
221 lynx_core_file_failing_signal (abfd)
224 return core_signal (abfd);
228 lynx_core_file_matches_executable_p (core_bfd, exec_bfd)
229 bfd *core_bfd, *exec_bfd;
231 return true; /* FIXME, We have no way of telling at this point */
234 #endif /* LYNX_CORE */