1 /* BFD back end for Lynx core files
2 Copyright 1993, 1994, 1995, 2001 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, 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)
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, 0, SEEK_SET) != 0)
107 val = bfd_read ((void *)&pss, 1, sizeof pss, abfd);
108 if (val != sizeof pss)
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 core_hdr (abfd) = (struct lynx_core_struct *)
117 bfd_zalloc (abfd, sizeof (struct lynx_core_struct));
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, pagesize, SEEK_SET) != 0)
139 val = bfd_read ((void *)threadp, pss.threadcnt, sizeof (core_st_t), abfd);
141 if (val != 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));
210 lynx_core_file_failing_command (abfd)
213 return core_command (abfd);
217 lynx_core_file_failing_signal (abfd)
220 return core_signal (abfd);
224 lynx_core_file_matches_executable_p (core_bfd, exec_bfd)
225 bfd *core_bfd, *exec_bfd;
227 return true; /* FIXME, We have no way of telling at this point */
230 #endif /* LYNX_CORE */