mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
407 lines
13 KiB
C
407 lines
13 KiB
C
/* BFD back-end for HP/UX core files.
|
||
Copyright 1993, 1994, 1996, 1998, 1999, 2001, 2002
|
||
Free Software Foundation, Inc.
|
||
Written by Stu Grossman, Cygnus Support.
|
||
Converted to back-end form by Ian Lance Taylor, 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. */
|
||
|
||
/* This file can only be compiled on systems which use HP/UX style
|
||
core files. */
|
||
|
||
#include "bfd.h"
|
||
#include "sysdep.h"
|
||
#include "libbfd.h"
|
||
|
||
#if defined (HOST_HPPAHPUX) || defined (HOST_HP300HPUX) || defined (HOST_HPPAMPEIX)
|
||
|
||
/* FIXME: sys/core.h doesn't exist for HPUX version 7. HPUX version
|
||
5, 6, and 7 core files seem to be standard trad-core.c type core
|
||
files; can we just use trad-core.c in addition to this file? */
|
||
|
||
#include <sys/core.h>
|
||
#include <sys/utsname.h>
|
||
|
||
#endif /* HOST_HPPAHPUX */
|
||
|
||
#ifdef HOST_HPPABSD
|
||
|
||
/* Not a very swift place to put it, but that's where the BSD port
|
||
puts them. */
|
||
#include "/hpux/usr/include/sys/core.h"
|
||
|
||
#endif /* HOST_HPPABSD */
|
||
|
||
#include <sys/param.h>
|
||
#ifdef HAVE_DIRENT_H
|
||
# include <dirent.h>
|
||
#else
|
||
# ifdef HAVE_SYS_NDIR_H
|
||
# include <sys/ndir.h>
|
||
# endif
|
||
# ifdef HAVE_SYS_DIR_H
|
||
# include <sys/dir.h>
|
||
# endif
|
||
# ifdef HAVE_NDIR_H
|
||
# include <ndir.h>
|
||
# endif
|
||
#endif
|
||
#include <signal.h>
|
||
#include <machine/reg.h>
|
||
#include <sys/user.h> /* After a.out.h */
|
||
#include <sys/file.h>
|
||
|
||
/* Kludge: There's no explicit mechanism provided by sys/core.h to
|
||
conditionally know whether a proc_info has thread id fields.
|
||
However, CORE_ANON_SHMEM shows up first at 10.30, which is
|
||
happily also when meaningful thread id's show up in proc_info. */
|
||
#if defined(CORE_ANON_SHMEM)
|
||
#define PROC_INFO_HAS_THREAD_ID (1)
|
||
#endif
|
||
|
||
/* This type appears at HP-UX 10.30. Defining it if not defined
|
||
by sys/core.h allows us to build for older HP-UX's, and (since
|
||
it won't be encountered in core-dumps from older HP-UX's) is
|
||
harmless. */
|
||
#if !defined(CORE_ANON_SHMEM)
|
||
#define CORE_ANON_SHMEM 0x00000200 /* anonymous shared memory */
|
||
#endif
|
||
|
||
/* These are stored in the bfd's tdata */
|
||
|
||
/* .lwpid and .user_tid are only valid if PROC_INFO_HAS_THREAD_ID, else they
|
||
are set to 0. Also, until HP-UX implements MxN threads, .user_tid and
|
||
.lwpid are synonymous. */
|
||
struct hpux_core_struct
|
||
{
|
||
int sig;
|
||
int lwpid; /* Kernel thread ID. */
|
||
unsigned long user_tid; /* User thread ID. */
|
||
char cmd[MAXCOMLEN + 1];
|
||
};
|
||
|
||
#define core_hdr(bfd) ((bfd)->tdata.hpux_core_data)
|
||
#define core_signal(bfd) (core_hdr(bfd)->sig)
|
||
#define core_command(bfd) (core_hdr(bfd)->cmd)
|
||
#define core_kernel_thread_id(bfd) (core_hdr(bfd)->lwpid)
|
||
#define core_user_thread_id(bfd) (core_hdr(bfd)->user_tid)
|
||
|
||
static asection *make_bfd_asection
|
||
PARAMS ((bfd *, const char *, flagword, bfd_size_type, bfd_vma,
|
||
unsigned int));
|
||
static const bfd_target *hpux_core_core_file_p
|
||
PARAMS ((bfd *));
|
||
static char *hpux_core_core_file_failing_command
|
||
PARAMS ((bfd *));
|
||
static int hpux_core_core_file_failing_signal
|
||
PARAMS ((bfd *));
|
||
static bfd_boolean hpux_core_core_file_matches_executable_p
|
||
PARAMS ((bfd *, bfd *));
|
||
static void swap_abort
|
||
PARAMS ((void));
|
||
|
||
static asection *
|
||
make_bfd_asection (abfd, name, flags, _raw_size, vma, alignment_power)
|
||
bfd *abfd;
|
||
const char *name;
|
||
flagword flags;
|
||
bfd_size_type _raw_size;
|
||
bfd_vma vma;
|
||
unsigned int alignment_power;
|
||
{
|
||
asection *asect;
|
||
char *newname;
|
||
|
||
newname = bfd_alloc (abfd, (bfd_size_type) strlen (name) + 1);
|
||
if (!newname)
|
||
return NULL;
|
||
|
||
strcpy (newname, name);
|
||
|
||
asect = bfd_make_section_anyway (abfd, newname);
|
||
if (!asect)
|
||
return NULL;
|
||
|
||
asect->flags = flags;
|
||
asect->_raw_size = _raw_size;
|
||
asect->vma = vma;
|
||
asect->filepos = bfd_tell (abfd);
|
||
asect->alignment_power = alignment_power;
|
||
|
||
return asect;
|
||
}
|
||
|
||
/* this function builds a bfd target if the file is a corefile.
|
||
It returns null or 0 if it finds out thaat it is not a core file.
|
||
The way it checks this is by looking for allowed 'type' field values.
|
||
These are declared in sys/core.h
|
||
There are some values which are 'reserved for future use'. In particular
|
||
CORE_NONE is actually defined as 0. This may be a catch-all for cases
|
||
in which the core file is generated by some non-hpux application.
|
||
(I am just guessing here!)
|
||
*/
|
||
static const bfd_target *
|
||
hpux_core_core_file_p (abfd)
|
||
bfd *abfd;
|
||
{
|
||
int good_sections = 0;
|
||
int unknown_sections = 0;
|
||
|
||
core_hdr (abfd) = (struct hpux_core_struct *)
|
||
bfd_zalloc (abfd, (bfd_size_type) sizeof (struct hpux_core_struct));
|
||
if (!core_hdr (abfd))
|
||
return NULL;
|
||
|
||
while (1)
|
||
{
|
||
int val;
|
||
struct corehead core_header;
|
||
|
||
val = bfd_bread ((void *) &core_header,
|
||
(bfd_size_type) sizeof core_header, abfd);
|
||
if (val <= 0)
|
||
break;
|
||
switch (core_header.type)
|
||
{
|
||
case CORE_KERNEL:
|
||
case CORE_FORMAT:
|
||
/* Just skip this. */
|
||
bfd_seek (abfd, (file_ptr) core_header.len, SEEK_CUR);
|
||
good_sections++;
|
||
break;
|
||
case CORE_EXEC:
|
||
{
|
||
struct proc_exec proc_exec;
|
||
if (bfd_bread ((void *) &proc_exec, (bfd_size_type) core_header.len,
|
||
abfd) != core_header.len)
|
||
break;
|
||
strncpy (core_command (abfd), proc_exec.cmd, MAXCOMLEN + 1);
|
||
good_sections++;
|
||
}
|
||
break;
|
||
case CORE_PROC:
|
||
{
|
||
struct proc_info proc_info;
|
||
char secname[100]; /* Of arbitrary size, but plenty large. */
|
||
|
||
/* We need to read this section, 'cause we need to determine
|
||
whether the core-dumped app was threaded before we create
|
||
any .reg sections. */
|
||
if (bfd_bread (&proc_info, (bfd_size_type) core_header.len, abfd)
|
||
!= core_header.len)
|
||
break;
|
||
|
||
/* However, we also want to create those sections with the
|
||
file positioned at the start of the record, it seems. */
|
||
if (bfd_seek (abfd, (file_ptr) -core_header.len, SEEK_CUR) != 0)
|
||
break;
|
||
|
||
#if defined(PROC_INFO_HAS_THREAD_ID)
|
||
core_kernel_thread_id (abfd) = proc_info.lwpid;
|
||
core_user_thread_id (abfd) = proc_info.user_tid;
|
||
#else
|
||
core_kernel_thread_id (abfd) = 0;
|
||
core_user_thread_id (abfd) = 0;
|
||
#endif
|
||
/* If the program was unthreaded, then we'll just create a
|
||
.reg section.
|
||
|
||
If the program was threaded, then we'll create .reg/XXXXX
|
||
section for each thread, where XXXXX is a printable
|
||
representation of the kernel thread id. We'll also
|
||
create a .reg section for the thread that was running
|
||
and signalled at the time of the core-dump (i.e., this
|
||
is effectively an alias, needed to keep GDB happy.)
|
||
|
||
Note that we use `.reg/XXXXX' as opposed to '.regXXXXX'
|
||
because GDB expects that .reg2 will be the floating-
|
||
point registers. */
|
||
if (core_kernel_thread_id (abfd) == 0)
|
||
{
|
||
if (!make_bfd_asection (abfd, ".reg",
|
||
SEC_HAS_CONTENTS,
|
||
core_header.len,
|
||
(int) &proc_info - (int) & proc_info.hw_regs,
|
||
2))
|
||
goto fail;
|
||
}
|
||
else
|
||
{
|
||
/* There are threads. Is this the one that caused the
|
||
core-dump? We'll claim it was the running thread. */
|
||
if (proc_info.sig != -1)
|
||
{
|
||
if (!make_bfd_asection (abfd, ".reg",
|
||
SEC_HAS_CONTENTS,
|
||
core_header.len,
|
||
(int) &proc_info - (int) & proc_info.hw_regs,
|
||
2))
|
||
goto fail;
|
||
}
|
||
/* We always make one of these sections, for every thread. */
|
||
sprintf (secname, ".reg/%d", core_kernel_thread_id (abfd));
|
||
if (!make_bfd_asection (abfd, secname,
|
||
SEC_HAS_CONTENTS,
|
||
core_header.len,
|
||
(int) &proc_info - (int) & proc_info.hw_regs,
|
||
2))
|
||
goto fail;
|
||
}
|
||
core_signal (abfd) = proc_info.sig;
|
||
if (bfd_seek (abfd, (file_ptr) core_header.len, SEEK_CUR) != 0)
|
||
break;
|
||
good_sections++;
|
||
}
|
||
break;
|
||
|
||
case CORE_DATA:
|
||
case CORE_STACK:
|
||
case CORE_TEXT:
|
||
case CORE_MMF:
|
||
case CORE_SHM:
|
||
case CORE_ANON_SHMEM:
|
||
if (!make_bfd_asection (abfd, ".data",
|
||
SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
|
||
core_header.len, core_header.addr, 2))
|
||
goto fail;
|
||
|
||
bfd_seek (abfd, (file_ptr) core_header.len, SEEK_CUR);
|
||
good_sections++;
|
||
break;
|
||
|
||
case CORE_NONE:
|
||
/* Let's not punt if we encounter a section of unknown
|
||
type. Rather, let's make a note of it. If we later
|
||
see that there were also "good" sections, then we'll
|
||
declare that this a core file, but we'll also warn that
|
||
it may be incompatible with this gdb.
|
||
*/
|
||
unknown_sections++;
|
||
break;
|
||
|
||
default:
|
||
goto fail; /*unrecognized core file type */
|
||
}
|
||
}
|
||
|
||
/* OK, we believe you. You're a core file (sure, sure). */
|
||
|
||
/* Were there sections of unknown type? If so, yet there were
|
||
at least some complete sections of known type, then, issue
|
||
a warning. Possibly the core file was generated on a version
|
||
of HP-UX that is incompatible with that for which this gdb was
|
||
built.
|
||
*/
|
||
if ((unknown_sections > 0) && (good_sections > 0))
|
||
(*_bfd_error_handler)
|
||
("%s appears to be a core file,\nbut contains unknown sections. It may have been created on an incompatible\nversion of HP-UX. As a result, some information may be unavailable.\n",
|
||
abfd->filename);
|
||
|
||
return abfd->xvec;
|
||
|
||
fail:
|
||
bfd_release (abfd, core_hdr (abfd));
|
||
core_hdr (abfd) = NULL;
|
||
bfd_section_list_clear (abfd);
|
||
return NULL;
|
||
}
|
||
|
||
static char *
|
||
hpux_core_core_file_failing_command (abfd)
|
||
bfd *abfd;
|
||
{
|
||
return core_command (abfd);
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static int
|
||
hpux_core_core_file_failing_signal (abfd)
|
||
bfd *abfd;
|
||
{
|
||
return core_signal (abfd);
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static bfd_boolean
|
||
hpux_core_core_file_matches_executable_p (core_bfd, exec_bfd)
|
||
bfd *core_bfd ATTRIBUTE_UNUSED;
|
||
bfd *exec_bfd ATTRIBUTE_UNUSED;
|
||
{
|
||
return TRUE; /* FIXME, We have no way of telling at this point */
|
||
}
|
||
|
||
/* If somebody calls any byte-swapping routines, shoot them. */
|
||
static void
|
||
swap_abort ()
|
||
{
|
||
abort(); /* This way doesn't require any declaration for ANSI to fuck up */
|
||
}
|
||
#define NO_GET ((bfd_vma (*) PARAMS (( const bfd_byte *))) swap_abort )
|
||
#define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
|
||
#define NO_SIGNED_GET \
|
||
((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort )
|
||
|
||
const bfd_target hpux_core_vec =
|
||
{
|
||
"hpux-core",
|
||
bfd_target_unknown_flavour,
|
||
BFD_ENDIAN_BIG, /* target byte order */
|
||
BFD_ENDIAN_BIG, /* target headers byte order */
|
||
(HAS_RELOC | EXEC_P | /* object flags */
|
||
HAS_LINENO | HAS_DEBUG |
|
||
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
|
||
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
|
||
0, /* symbol prefix */
|
||
' ', /* ar_pad_char */
|
||
16, /* ar_max_namelen */
|
||
NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */
|
||
NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */
|
||
NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */
|
||
NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */
|
||
NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */
|
||
NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */
|
||
|
||
{ /* bfd_check_format */
|
||
_bfd_dummy_target, /* unknown format */
|
||
_bfd_dummy_target, /* object file */
|
||
_bfd_dummy_target, /* archive */
|
||
hpux_core_core_file_p /* a core file */
|
||
},
|
||
{ /* bfd_set_format */
|
||
bfd_false, bfd_false,
|
||
bfd_false, bfd_false
|
||
},
|
||
{ /* bfd_write_contents */
|
||
bfd_false, bfd_false,
|
||
bfd_false, bfd_false
|
||
},
|
||
|
||
BFD_JUMP_TABLE_GENERIC (_bfd_generic),
|
||
BFD_JUMP_TABLE_COPY (_bfd_generic),
|
||
BFD_JUMP_TABLE_CORE (hpux_core),
|
||
BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
|
||
BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
|
||
BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
|
||
BFD_JUMP_TABLE_WRITE (_bfd_generic),
|
||
BFD_JUMP_TABLE_LINK (_bfd_nolink),
|
||
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
||
|
||
NULL,
|
||
|
||
(PTR) 0 /* backend_data */
|
||
};
|