Initial revision

1 files changed, 303 insertions, 0 deletions

diff --git a/bfd/hppabsd-core.c b/bfd/hppabsd-core.c
new file mode 100644
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+++ b/bfd/hppabsd-core.c
@@ -0,0 +1,303 @@
+/* BFD back-end for HPPA BSD core files.
+   Copyright 1993, 94, 95, 97, 1998 Free Software Foundation, Inc.
+
+   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.
+
+   Written by the Center for Software Science at the University of Utah
+   and by Cygnus Support. 
+
+   The core file structure for the Utah 4.3BSD and OSF1 ports on the
+   PA is a mix between traditional cores and hpux cores -- just
+   different enough that supporting this format would tend to add
+   gross hacks to trad-core.c or hpux-core.c.  So instead we keep any
+   gross hacks isolated to this file.  */
+   
+
+/* This file can only be compiled on systems which use HPPA-BSD style
+   core files.
+
+   I would not expect this to be of use to any other host/target, but
+   you never know.  */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+
+#if defined (HOST_HPPABSD)
+
+#include "machine/vmparam.h"
+
+#include <sys/param.h>
+#include <sys/dir.h>
+#include <signal.h>
+#include <machine/reg.h>
+#include <sys/user.h>		/* After a.out.h  */
+#include <sys/file.h>
+
+static asection *make_bfd_asection PARAMS ((bfd *, CONST char *,
+					    flagword, bfd_size_type,
+					    file_ptr, unsigned int));
+static asymbol *hppabsd_core_make_empty_symbol PARAMS ((bfd *));
+static const bfd_target *hppabsd_core_core_file_p PARAMS ((bfd *));
+static char *hppabsd_core_core_file_failing_command PARAMS ((bfd *));
+static int hppabsd_core_core_file_failing_signal PARAMS ((bfd *));
+static boolean hppabsd_core_core_file_matches_executable_p
+  PARAMS ((bfd *, bfd *));
+static void swap_abort PARAMS ((void));
+
+/* These are stored in the bfd's tdata.  */
+
+struct hppabsd_core_struct
+  {
+    int sig;
+    char cmd[MAXCOMLEN + 1];
+    asection *data_section;
+    asection *stack_section;
+    asection *reg_section;
+  };
+
+#define core_hdr(bfd) ((bfd)->tdata.hppabsd_core_data)
+#define core_signal(bfd) (core_hdr(bfd)->sig)
+#define core_command(bfd) (core_hdr(bfd)->cmd)
+#define core_datasec(bfd) (core_hdr(bfd)->data_section)
+#define core_stacksec(bfd) (core_hdr(bfd)->stack_section)
+#define core_regsec(bfd) (core_hdr(bfd)->reg_section)
+
+static asection *
+make_bfd_asection (abfd, name, flags, _raw_size, offset, alignment_power)
+     bfd *abfd;
+     CONST char *name;
+     flagword flags;
+     bfd_size_type _raw_size;
+     file_ptr offset;
+     unsigned int alignment_power;
+{
+  asection *asect;
+
+  asect = bfd_make_section (abfd, name);
+  if (!asect)
+    return NULL;
+
+  asect->flags = flags;
+  asect->_raw_size = _raw_size;
+  asect->filepos = offset;
+  asect->alignment_power = alignment_power;
+
+  return asect;
+}
+
+static asymbol *
+hppabsd_core_make_empty_symbol (abfd)
+     bfd *abfd;
+{
+  asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
+  if (new)
+    new->the_bfd = abfd;
+  return new;
+}
+
+static const bfd_target *
+hppabsd_core_core_file_p (abfd)
+     bfd *abfd;
+{
+  int val;
+  struct user u;
+  struct hppabsd_core_struct *coredata;
+  int clicksz;
+
+  /* Try to read in the u-area.  We will need information from this
+     to know how to grok the rest of the core structures.  */
+  val = bfd_read ((void *) &u, 1, sizeof u, abfd);
+  if (val != sizeof u)
+    {
+      if (bfd_get_error () != bfd_error_system_call)
+	bfd_set_error (bfd_error_wrong_format);
+      return NULL;
+    }
+
+  /* Get the page size out of the u structure.  This will be different
+     for PA 1.0 machines and PA 1.1 machines.   Yuk!  */
+  clicksz = u.u_pcb.pcb_pgsz;
+
+  /* clicksz must be a power of two >= 2k.  */
+  if (clicksz < 0x800
+      || clicksz != (clicksz & -clicksz))
+    {
+      bfd_set_error (bfd_error_wrong_format);
+      return NULL;
+    }
+
+
+  /* Sanity checks.  Make sure the size of the core file matches the
+     the size computed from information within the core itself.  */
+  {
+    FILE *stream = bfd_cache_lookup (abfd);
+    struct stat statbuf;
+    if (stream == NULL || fstat (fileno (stream), &statbuf) < 0)
+      {
+	bfd_set_error (bfd_error_system_call);
+	return NULL;
+      }
+    if (NBPG * (UPAGES + u.u_dsize + u.u_ssize) > statbuf.st_size)
+      {
+	bfd_set_error (bfd_error_file_truncated);
+	return NULL;
+      }
+    if (clicksz * (UPAGES + u.u_dsize + u.u_ssize) < statbuf.st_size)
+      {
+	/* The file is too big.  Maybe it's not a core file
+	   or we otherwise have bad values for u_dsize and u_ssize).  */
+	bfd_set_error (bfd_error_wrong_format);
+	return NULL;
+      }
+  }
+
+  /* OK, we believe you.  You're a core file (sure, sure).  */
+
+  coredata = (struct hppabsd_core_struct *)
+    bfd_zalloc (abfd, sizeof (struct hppabsd_core_struct));
+  if (!coredata)
+    return NULL;
+
+  /* Make the core data and available via the tdata part of the BFD.  */
+  abfd->tdata.hppabsd_core_data = coredata;
+
+  /* Create the sections.  */
+  core_stacksec (abfd) = make_bfd_asection (abfd, ".stack",
+					   SEC_ALLOC + SEC_HAS_CONTENTS,
+					   clicksz * u.u_ssize,
+					   NBPG * (USIZE + KSTAKSIZE) 
+					     + clicksz * u.u_dsize, 2);
+  core_stacksec (abfd)->vma = USRSTACK; 
+
+  core_datasec (abfd) = make_bfd_asection (abfd, ".data",
+					  SEC_ALLOC + SEC_LOAD
+					    + SEC_HAS_CONTENTS,
+					  clicksz * u.u_dsize,
+					  NBPG * (USIZE + KSTAKSIZE), 2);
+  core_datasec (abfd)->vma = UDATASEG;
+
+  core_regsec (abfd) = make_bfd_asection (abfd, ".reg",
+					 SEC_HAS_CONTENTS,
+					 KSTAKSIZE * NBPG,
+					 NBPG * USIZE, 2);
+  core_regsec (abfd)->vma = 0;
+
+  strncpy (core_command (abfd), u.u_comm, MAXCOMLEN + 1);
+  core_signal (abfd) = u.u_code;
+  return abfd->xvec;
+}
+
+static char *
+hppabsd_core_core_file_failing_command (abfd)
+     bfd *abfd;
+{
+  return core_command (abfd);
+}
+
+/* ARGSUSED */
+static int
+hppabsd_core_core_file_failing_signal (abfd)
+     bfd *abfd;
+{
+  return core_signal (abfd);
+}
+
+/* ARGSUSED */
+static boolean
+hppabsd_core_core_file_matches_executable_p (core_bfd, exec_bfd)
+     bfd *core_bfd, *exec_bfd;
+{
+  /* There's no way to know this...  */
+  return true;
+}
+
+
+#define hppabsd_core_get_symtab_upper_bound \
+  _bfd_nosymbols_get_symtab_upper_bound
+#define hppabsd_core_get_symtab _bfd_nosymbols_get_symtab
+#define hppabsd_core_print_symbol _bfd_nosymbols_print_symbol
+#define hppabsd_core_get_symbol_info _bfd_nosymbols_get_symbol_info
+#define hppabsd_core_bfd_is_local_label_name \
+  _bfd_nosymbols_bfd_is_local_label_name
+#define hppabsd_core_get_lineno _bfd_nosymbols_get_lineno
+#define hppabsd_core_find_nearest_line _bfd_nosymbols_find_nearest_line
+#define hppabsd_core_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
+#define hppabsd_core_read_minisymbols _bfd_nosymbols_read_minisymbols
+#define hppabsd_core_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol
+
+/* If somebody calls any byte-swapping routines, shoot them.  */
+static void
+swap_abort ()
+{
+  /* This way doesn't require any declaration for ANSI to fuck up.  */
+  abort ();	
+}
+
+#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 hppabsd_core_vec =
+  {
+    "hppabsd-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 */
+     hppabsd_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 (hppabsd_core),
+       BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
+       BFD_JUMP_TABLE_SYMBOLS (hppabsd_core),
+       BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
+       BFD_JUMP_TABLE_WRITE (_bfd_generic),
+       BFD_JUMP_TABLE_LINK (_bfd_nolink),
+       BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+    (PTR) 0			/* backend_data */
+};
+#endif