1 /* BFD back end for Lynx core files
2 Copyright 1993 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;
88 lynx_core_file_p (abfd
)
99 pagesize
= getpagesize (); /* Serious cross-target issue here... This
100 really needs to come from a system-specific
103 /* Get the pss entry from the core file */
105 if (bfd_seek (abfd
, 0, SEEK_SET
) != 0)
108 val
= bfd_read ((void *)&pss
, 1, sizeof pss
, abfd
);
109 if (val
!= sizeof pss
)
111 /* Too small to be a core file */
112 if (bfd_get_error () != bfd_error_system_call
)
113 bfd_set_error (bfd_error_wrong_format
);
117 core_hdr (abfd
) = (struct lynx_core_struct
*)
118 bfd_zalloc (abfd
, sizeof (struct lynx_core_struct
));
120 if (!core_hdr (abfd
))
123 strncpy (core_command (abfd
), pss
.pname
, PNMLEN
+ 1);
125 /* Compute the size of the thread contexts */
127 tcontext_size
= pss
.threadcnt
* sizeof (core_st_t
);
129 /* Allocate space for the thread contexts */
131 threadp
= (core_st_t
*)bfd_alloc (abfd
, tcontext_size
);
135 /* Save thread contexts */
137 if (bfd_seek (abfd
, pagesize
, SEEK_SET
) != 0)
140 val
= bfd_read ((void *)threadp
, pss
.threadcnt
, sizeof (core_st_t
), abfd
);
142 if (val
!= tcontext_size
)
144 /* Probably too small to be a core file */
145 if (bfd_get_error () != bfd_error_system_call
)
146 bfd_set_error (bfd_error_wrong_format
);
150 core_signal (abfd
) = threadp
->currsig
;
152 newsect
= make_bfd_asection (abfd
, ".stack",
153 SEC_ALLOC
+ SEC_LOAD
+ SEC_HAS_CONTENTS
,
156 pagesize
+ tcontext_size
);
160 newsect
= make_bfd_asection (abfd
, ".data",
161 SEC_ALLOC
+ SEC_LOAD
+ SEC_HAS_CONTENTS
,
162 pss
.data_len
+ pss
.bss_len
,
164 pagesize
+ tcontext_size
+ pss
.ssize
165 #if defined (SPARC) || defined (__SPARC__)
166 /* SPARC Lynx seems to start dumping
167 the .data section at a page
168 boundary. It's OK to check a
169 #define like SPARC here because this
170 file can only be compiled on a Lynx
172 + pss
.data_start
% pagesize
178 /* And, now for the .reg/XXX pseudo sections. Each thread has it's own
179 .reg/XXX section, where XXX is the thread id (without leading zeros). The
180 currently running thread (at the time of the core dump) also has an alias
181 called `.reg' (just to keep GDB happy). Note that we use `.reg/XXX' as
182 opposed to `.regXXX' because GDB expects that .reg2 will be the floating-
185 newsect
= make_bfd_asection (abfd
, ".reg",
193 for (secnum
= 0; secnum
< pss
.threadcnt
; secnum
++)
197 sprintf (secname
, ".reg/%d", BUILDPID (0, threadp
[secnum
].tid
));
198 newsect
= make_bfd_asection (abfd
, secname
,
202 pagesize
+ secnum
* sizeof (core_st_t
));
211 lynx_core_file_failing_command (abfd
)
214 return core_command (abfd
);
219 lynx_core_file_failing_signal (abfd
)
222 return core_signal (abfd
);
227 lynx_core_file_matches_executable_p (core_bfd
, exec_bfd
)
228 bfd
*core_bfd
, *exec_bfd
;
230 return true; /* FIXME, We have no way of telling at this point */
233 #endif /* LYNX_CORE */
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