/* BFD back end for Lynx core files
- Copyright 1993 Free Software Foundation, Inc.
+ Copyright (C) 1993-2020 Free Software Foundation, Inc.
Written by Stu Grossman of Cygnus Support.
-This file is part of BFD, the Binary File Descriptor library.
+ This file is part of BFD, the Binary File Descriptor library.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "libbfd.h"
-#ifdef HOST_LYNX /* Core files only work locally for now */
+#ifdef LYNX_CORE
+
+#include <sys/conf.h>
+#include <sys/kernel.h>
+/* sys/kernel.h should define this, but doesn't always, sigh. */
+#ifndef __LYNXOS
+#define __LYNXOS
+#endif
+#include <sys/mem.h>
+#include <sys/signal.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/itimer.h>
+#include <sys/file.h>
+#include <sys/proc.h>
/* These are stored in the bfd's tdata */
-struct lynx_core_struct
+struct lynx_core_struct
{
int sig;
char cmd[PNMLEN + 1];
#define core_signal(bfd) (core_hdr(bfd)->sig)
#define core_command(bfd) (core_hdr(bfd)->cmd)
+#define lynx_core_file_matches_executable_p generic_core_file_matches_executable_p
+#define lynx_core_file_pid _bfd_nocore_core_file_pid
+
/* Handle Lynx core dump file. */
static asection *
-make_bfd_asection (abfd, name, flags, _raw_size, vma, filepos)
- bfd *abfd;
- CONST char *name;
- flagword flags;
- bfd_size_type _raw_size;
- bfd_vma vma;
- file_ptr filepos;
+make_bfd_asection (bfd *abfd,
+ const char *name,
+ flagword flags,
+ bfd_size_type size,
+ bfd_vma vma,
+ file_ptr filepos)
{
asection *asect;
char *newname;
- newname = bfd_alloc (abfd, strlen (name) + 1);
+ newname = bfd_alloc (abfd, (bfd_size_type) strlen (name) + 1);
if (!newname)
return NULL;
strcpy (newname, name);
- asect = bfd_make_section (abfd, newname);
+ asect = bfd_make_section_with_flags (abfd, newname, flags);
if (!asect)
return NULL;
- asect->flags = flags;
- asect->_raw_size = _raw_size;
+ asect->size = size;
asect->vma = vma;
asect->filepos = filepos;
asect->alignment_power = 2;
return asect;
}
-/* ARGSUSED */
-bfd_target *
-lynx_core_file_p (abfd)
- bfd *abfd;
+bfd_cleanup
+lynx_core_file_p (bfd *abfd)
{
- int val;
int secnum;
struct pssentry pss;
- size_t tcontext_size;
+ bfd_size_type tcontext_size;
core_st_t *threadp;
int pagesize;
asection *newsect;
+ size_t amt;
pagesize = getpagesize (); /* Serious cross-target issue here... This
really needs to come from a system-specific
/* Get the pss entry from the core file */
- bfd_seek (abfd, 0, SEEK_SET);
+ if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
+ return NULL;
- val = bfd_read ((void *)&pss, 1, sizeof pss, abfd);
- if (val != sizeof pss)
+ amt = sizeof pss;
+ if (bfd_bread ((void *) &pss, amt, abfd) != amt)
{
/* Too small to be a core file */
- bfd_error = wrong_format;
+ if (bfd_get_error () != bfd_error_system_call)
+ bfd_set_error (bfd_error_wrong_format);
return NULL;
- }
+ }
- core_hdr (abfd) = (struct lynx_core_struct *)
- bfd_zalloc (abfd, sizeof (struct lynx_core_struct));
+ amt = sizeof (struct lynx_core_struct);
+ core_hdr (abfd) = (struct lynx_core_struct *) bfd_zalloc (abfd, amt);
if (!core_hdr (abfd))
- {
- bfd_error = no_memory;
- return NULL;
- }
+ return NULL;
strncpy (core_command (abfd), pss.pname, PNMLEN + 1);
tcontext_size = pss.threadcnt * sizeof (core_st_t);
- /* Allocate space for the thread contexts */
-
- threadp = (core_st_t *)bfd_zalloc (abfd, tcontext_size);
- if (!threadp)
- {
- bfd_error = no_memory;
- return NULL;
- }
-
/* Save thread contexts */
+ if (bfd_seek (abfd, pagesize, SEEK_SET) != 0)
+ goto fail;
+ threadp = (core_st_t *) _bfd_alloc_and_read (abfd, tcontext_size,
+ tcontext_size);
+ if (!threadp)
+ goto fail;
- bfd_seek (abfd, pagesize, SEEK_SET);
-
- val = bfd_read ((void *)threadp, pss.threadcnt, sizeof (core_st_t), abfd);
-
- if (val != tcontext_size)
- {
- /* Probably too small to be a core file */
- bfd_error = wrong_format;
- return NULL;
- }
-
core_signal (abfd) = threadp->currsig;
newsect = make_bfd_asection (abfd, ".stack",
pss.slimit,
pagesize + tcontext_size);
if (!newsect)
- {
- bfd_error = no_memory;
- return NULL;
- }
+ goto fail;
newsect = make_bfd_asection (abfd, ".data",
SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
pss.data_len + pss.bss_len,
pss.data_start,
- pagesize + tcontext_size + pss.ssize);
+ pagesize + tcontext_size + pss.ssize
+#if defined (SPARC) || defined (__SPARC__)
+ /* SPARC Lynx seems to start dumping
+ the .data section at a page
+ boundary. It's OK to check a
+ #define like SPARC here because this
+ file can only be compiled on a Lynx
+ host. */
+ + pss.data_start % pagesize
+#endif
+ );
if (!newsect)
- {
- bfd_error = no_memory;
- return NULL;
- }
+ goto fail;
+
+/* And, now for the .reg/XXX pseudo sections. Each thread has it's own
+ .reg/XXX section, where XXX is the thread id (without leading zeros). The
+ currently running thread (at the time of the core dump) also has an alias
+ called `.reg' (just to keep GDB happy). Note that we use `.reg/XXX' as
+ opposed to `.regXXX' because GDB expects that .reg2 will be the floating-
+ point registers. */
+
+ newsect = make_bfd_asection (abfd, ".reg",
+ SEC_HAS_CONTENTS,
+ sizeof (core_st_t),
+ 0,
+ pagesize);
+ if (!newsect)
+ goto fail;
for (secnum = 0; secnum < pss.threadcnt; secnum++)
{
char secname[100];
- sprintf (secname, ".reg%d", threadp[secnum].tid);
+ sprintf (secname, ".reg/%d", BUILDPID (0, threadp[secnum].tid));
newsect = make_bfd_asection (abfd, secname,
- SEC_ALLOC + SEC_HAS_CONTENTS,
+ SEC_HAS_CONTENTS,
sizeof (core_st_t),
0,
pagesize + secnum * sizeof (core_st_t));
if (!newsect)
- {
- bfd_error = no_memory;
- return NULL;
- }
+ goto fail;
}
- return abfd->xvec;
+ return _bfd_no_cleanup;
+
+ fail:
+ bfd_release (abfd, core_hdr (abfd));
+ core_hdr (abfd) = NULL;
+ bfd_section_list_clear (abfd);
+ return NULL;
}
char *
-lynx_core_file_failing_command (abfd)
- bfd *abfd;
+lynx_core_file_failing_command (bfd *abfd)
{
return core_command (abfd);
}
-/* ARGSUSED */
int
-lynx_core_file_failing_signal (abfd)
- bfd *abfd;
+lynx_core_file_failing_signal (bfd *abfd)
{
return core_signal (abfd);
}
-/* ARGSUSED */
-boolean
-lynx_core_file_matches_executable_p (core_bfd, exec_bfd)
- bfd *core_bfd, *exec_bfd;
-{
- return true; /* FIXME, We have no way of telling at this point */
-}
-
-#endif /* HOST_LYNX */
+#endif /* LYNX_CORE */
projects / deliverable / binutils-gdb.git / blobdiff