mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-12-06 11:27:05 +00:00
231 lines
5.8 KiB
C
231 lines
5.8 KiB
C
/* BFD back end for Lynx core files
|
|
Copyright 1993, 1994, 1995, 2001 Free Software Foundation, Inc.
|
|
Written by Stu Grossman of Cygnus Support.
|
|
|
|
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 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
|
|
|
#include "bfd.h"
|
|
#include "sysdep.h"
|
|
#include "libbfd.h"
|
|
|
|
#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
|
|
{
|
|
int sig;
|
|
char cmd[PNMLEN + 1];
|
|
};
|
|
|
|
#define core_hdr(bfd) ((bfd)->tdata.lynx_core_data)
|
|
#define core_signal(bfd) (core_hdr(bfd)->sig)
|
|
#define core_command(bfd) (core_hdr(bfd)->cmd)
|
|
|
|
/* 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;
|
|
{
|
|
asection *asect;
|
|
char *newname;
|
|
|
|
newname = bfd_alloc (abfd, strlen (name) + 1);
|
|
if (!newname)
|
|
return NULL;
|
|
|
|
strcpy (newname, name);
|
|
|
|
asect = bfd_make_section (abfd, newname);
|
|
if (!asect)
|
|
return NULL;
|
|
|
|
asect->flags = flags;
|
|
asect->_raw_size = _raw_size;
|
|
asect->vma = vma;
|
|
asect->filepos = filepos;
|
|
asect->alignment_power = 2;
|
|
|
|
return asect;
|
|
}
|
|
|
|
const bfd_target *
|
|
lynx_core_file_p (abfd)
|
|
bfd *abfd;
|
|
{
|
|
int val;
|
|
int secnum;
|
|
struct pssentry pss;
|
|
size_t tcontext_size;
|
|
core_st_t *threadp;
|
|
int pagesize;
|
|
asection *newsect;
|
|
|
|
pagesize = getpagesize (); /* Serious cross-target issue here... This
|
|
really needs to come from a system-specific
|
|
header file. */
|
|
|
|
/* Get the pss entry from the core file */
|
|
|
|
if (bfd_seek (abfd, 0, SEEK_SET) != 0)
|
|
return NULL;
|
|
|
|
val = bfd_read ((void *)&pss, 1, sizeof pss, abfd);
|
|
if (val != sizeof pss)
|
|
{
|
|
/* Too small to be a core file */
|
|
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));
|
|
|
|
if (!core_hdr (abfd))
|
|
return NULL;
|
|
|
|
strncpy (core_command (abfd), pss.pname, PNMLEN + 1);
|
|
|
|
/* Compute the size of the thread contexts */
|
|
|
|
tcontext_size = pss.threadcnt * sizeof (core_st_t);
|
|
|
|
/* Allocate space for the thread contexts */
|
|
|
|
threadp = (core_st_t *)bfd_alloc (abfd, tcontext_size);
|
|
if (!threadp)
|
|
return NULL;
|
|
|
|
/* Save thread contexts */
|
|
|
|
if (bfd_seek (abfd, pagesize, SEEK_SET) != 0)
|
|
return NULL;
|
|
|
|
val = bfd_read ((void *)threadp, pss.threadcnt, sizeof (core_st_t), abfd);
|
|
|
|
if (val != tcontext_size)
|
|
{
|
|
/* Probably too small to be a core file */
|
|
if (bfd_get_error () != bfd_error_system_call)
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
return NULL;
|
|
}
|
|
|
|
core_signal (abfd) = threadp->currsig;
|
|
|
|
newsect = make_bfd_asection (abfd, ".stack",
|
|
SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
|
|
pss.ssize,
|
|
pss.slimit,
|
|
pagesize + tcontext_size);
|
|
if (!newsect)
|
|
return NULL;
|
|
|
|
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
|
|
#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)
|
|
return NULL;
|
|
|
|
/* 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)
|
|
return NULL;
|
|
|
|
for (secnum = 0; secnum < pss.threadcnt; secnum++)
|
|
{
|
|
char secname[100];
|
|
|
|
sprintf (secname, ".reg/%d", BUILDPID (0, threadp[secnum].tid));
|
|
newsect = make_bfd_asection (abfd, secname,
|
|
SEC_HAS_CONTENTS,
|
|
sizeof (core_st_t),
|
|
0,
|
|
pagesize + secnum * sizeof (core_st_t));
|
|
if (!newsect)
|
|
return NULL;
|
|
}
|
|
|
|
return abfd->xvec;
|
|
}
|
|
|
|
char *
|
|
lynx_core_file_failing_command (abfd)
|
|
bfd *abfd;
|
|
{
|
|
return core_command (abfd);
|
|
}
|
|
|
|
int
|
|
lynx_core_file_failing_signal (abfd)
|
|
bfd *abfd;
|
|
{
|
|
return core_signal (abfd);
|
|
}
|
|
|
|
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 /* LYNX_CORE */
|